KR102625686B1 - Electric motor - Google Patents

Abstract

The present invention relates to a motor, comprising a stator and a rotor, wherein the stator includes a plurality of split cores; A plurality of coil units; a plurality of insulators that insulate the coil unit; and a wiring PCB having a plurality of notches open to the outside so that both ends of the wires of the plurality of coil parts can be respectively accommodated and joined, and connecting the plurality of coil parts to allow electricity to pass through them. The insulator includes an outer support portion contactable to the outer circumference of the wiring PCB along a radial direction; an inner plate support portion that protrudes along the axial direction and supports the inner plate surface of the wiring PCB; and an outer plate support portion contacting the outer plate surface of the wiring PCB, wherein the outer plate support portion is formed to protrude inward along a radial direction from the outer circumferential support portion. As a result, it is possible to suppress the occurrence of bonding defects due to displacement of the PCB when wiring the stator coil of the split core using the PCB.

Description

Motor{ELECTRIC MOTOR}

The present invention relates to motors.

As is well known, an electric motor or motor is a device that converts electrical energy into mechanical energy.

This motor is mainly composed of a stator and a rotor rotatably disposed with an air gap (AIR GAP) between the stator and the stator.

The rotor includes a rotating shaft and a rotor core that is coupled to the rotating shaft and rotates.

Here, the rotor core is equipped with magnetic force generating means such as an armature winding, a permanent magnet, and a plurality of conductor bars to generate magnetic force, and the magnetic force of the rotor core interacts with the magnetic force generated by the stator, so that the rotor It rotates around the axis of rotation.

The stator is comprised of a stator core and a stator coil wound around the stator core. An insulator for insulation is provided between the stator core and the stator coil.

The stator core is comprised of a yoke, a tooth protruding from the yoke in a radial direction, and a shoe extending to both sides in a circumferential direction at an end of the tooth. The teeth are spaced apart along the circumferential direction of the yoke, and a slot is formed between two consecutive teeth. The teeth and slots are formed alternately with each other along the circumferential direction of the stator core.

Meanwhile, some of the stator cores are composed of a plurality of split cores that are joined to form a ring shape along the circumferential direction.

The plurality of split cores are each provided with an arc-shaped yoke, teeth, and shoe. The plurality of split cores are combined to form an annular shape along the circumferential direction to form a rotor receiving hole in which the rotor can be accommodated.

The stator coil is comprised of a plurality of coil parts each wound around the teeth of the plurality of split cores.

The insulator includes a yoke insulating part that insulates the yoke of the split core, a tooth insulating part that insulates the teeth, and a shoe insulating part that insulates the shoe.

However, in a motor with such a conventional split core, the stator coil is configured to connect (e.g., solder) the ends of the wires of the plurality of coil parts in a preset pattern, so that the stator coil There is a problem that a lot of time and effort is required for the wiring work.

Additionally, in a motor with a conventional split core, there is a problem in that it is not easy for the plurality of split cores arranged to form an air gap with the rotor to be concentric with the rotor.

In addition, since the plurality of split cores are relatively weak compared to the integrated stator core, radial clearance is likely to occur due to magnetic force (attraction force, repulsion force) acting between the split cores and the rotor during operation. Therefore, there is a problem in that the voids become non-uniform.

Additionally, the plurality of split cores have a problem in that the output of the motor may be impaired due to uneven air gaps.

Meanwhile, in consideration of the problem that it takes a lot of time and effort to wire the motor with the plurality of split cores, a printed circuit board (PCB) is placed on one side of the stator along the axial direction, and the PCB and A method of wiring by connecting the wires of the stator coil is used.

However, in a conventional motor that uses such a PCB to wire the stator coil, the PCB is placed on one side (for example, the upper side) of the stator, and the end of the wire of the stator coil is connected to the connection point of the PCB. After contacting the wire, the end of the wire and the connection point are joined (soldered), so there is a problem that a joining defect may occur when the PCB and/or the wire moves relative to each other.

Specifically, if the wire is joined in a state that is slightly moved from the connection point of the PCB, a current conduction failure may occur.

In addition, there is a problem in that when a joining device is placed and heated at a point distant from the connection point of the PCB, unnecessary areas of the PCB may be heated and soot may be generated on the PCB, thereby deteriorating its appearance.

In consideration of this problem, a motor in which a cap with a hook is provided at one end of the stator and the PCB is fixed by the hook is known as US Patent US9270146 B2 (2016.02.23).

However, in the motor equipped with such a conventional hook, the PCB is configured to enable delta (Δ) connection of the stator coil, so it is difficult to use when the stator coil is connected by Y. There is a problem.

In addition, a wire receiving hole is formed through the outer peripheral area of the PCB so that the end of the wire of the coil part of the stator coil can be accommodated, and the start and end ends of the different coil parts are inserted simultaneously, so that the end of the wire of the coil part of the stator coil can be received. There is a problem that insertion work becomes difficult.

In addition, a cut is formed so that the wire receiving hole into which the end of the wire of the coil unit is inserted is open to the outside, and the starting end and the end of the wire are each accommodated through the cut, but the wires are connected to each other through the cut. There is a problem in that it may be separated, and as a result, the electrical connection between the starting end and the ending end may be insufficient.

In addition, the inner plate surface (bottom surface) of the PCB is supported by the shoulder of the hook, both sides of the hook are received in the notch of the PCB and supported in the circumferential direction, and the outer plate surface of the PCB is formed by the inner surface of the hook. Since it is configured to be supported, there is a problem in that it is not easy to combine the hook and the PCB.

In addition, the hooks are spaced relatively far apart along the circumferential direction independently of the connection position of the wire of the coil portion of the stator coil, so the outer peripheral (rim) portion of the PCB corresponding to the hooks is insufficiently supported. There is a problem that the PCB may have a gap.

In particular, when the coil portion of the stator coil is connected at a point corresponding to the hook, axial clearance and/or radial clearance may occur in the outer circumference (rim) of the PCB, resulting in bonding. There is a problem that bonding defects may occur.

US 9270146 B2 (2016.02.23)

Therefore, the purpose of the present invention is to provide a motor that can suppress the occurrence of bonding defects due to displacement of the PCB when wiring the stator coil of the split core using the PCB.

Another object of the present invention is to provide a motor in which the PC ratio can be uniformly distributed and supported corresponding to the coil portion of the stator coil, and the reliability of assembly of the split core can be improved.

Another object of the present invention is to provide a motor in which radial clearance of a plurality of split cores can be suppressed and air gaps can be maintained uniformly.

Another object of the present invention is to provide a motor that allows easy connection of wires by eliminating direct bonding between ends of stator coil wires.

Another object of the present invention is to provide a motor in which the coil parts of the stator coil can be easily connected regardless of the number of coil parts of the stator coil.

In addition, another object of the present invention is to provide a motor that can support the outer circumference, inner surface, and outer surface of the PCB when joining the PCB, thereby suppressing the occurrence of joining defects due to radial clearance and axial clearance of the PCB. Do it as

In addition, another object of the present invention is to provide a motor that can be coupled to the PCB at an accurate position and can suppress the occurrence of bonding defects due to radial clearance, axial clearance, and circumferential clearance of the PCB. .

The motor according to the present invention for solving the problems described above has a technical feature of suppressing distortion or shaking of the wiring PCB when wiring a stator coil using the wiring PCB.

Specifically, the stator includes a plurality of split cores combined in an annular shape to accommodate a rotor, a stator coil having a plurality of coil parts wound on the plurality of split cores, and a plurality of stator coils for insulating the plurality of coil parts. An insulator and a ring-shaped wiring PCB for wiring the plurality of coil units are provided, and the plurality of insulators include a wiring PCB capable of supporting the outer circumference, inner surface (inner plate surface), and outer surface (outer plate surface) of the wiring PCB, respectively. By providing a support portion, distortion or shaking of the wiring PCB can be suppressed when wiring the coil portion of the stator coil.

The wiring PCB support portion includes an outer circumferential support portion contactable with the outer circumference of the wiring PCB along the radial direction, an inner plate support portion that protrudes along the axial direction from the plurality of coil portions to support the inner plate surface of the wiring PCB, and the outer circumferential support portion. It is configured to include an outer plate support portion that extends inward along the radial direction and supports the outer plate surface of the wiring PCB.

As a result, the occurrence of radial clearance and axial clearance of the wiring PCB can be suppressed, respectively, and the occurrence of bonding defects due to the radial clearance and axial clearance of the wiring PCB can be suppressed.

In addition, since the outer circumference of the wiring PCB is contacted and supported by the outer circumferential support portion provided in each of the insulators of the plurality of split cores, the occurrence of radial clearance between the plurality of split cores can be suppressed, thereby facilitating the assembly of the plurality of split cores. Reliability can be improved.

Here, the wiring PCB is provided with a plurality of notches open to the outside so that both ends of the wires of the plurality of coil parts can be accommodated on the outer periphery, respectively.

Both ends of the wires of the plurality of coil units accommodated in the plurality of notches may be joined (soldered) to the notches.

As a result, when wiring the stator coils, direct contact between ends of the wires of the plurality of coil units can be excluded.

In addition, since both ends of the wires of the plurality of coil parts each wound on the plurality of split cores are bonded to each notch of the wiring PCB, the coupling of the plurality of split cores, the plurality of coil parts and the wiring PCB is further improved. It can be done.

In one embodiment of the present invention, the motor includes a stator; and a rotor accommodated inside the stator, wherein the stator includes a plurality of split cores coupled in an annular shape to accommodate the rotor therein; A stator coil having a plurality of coil parts each wound around the plurality of split cores; a plurality of insulators insulating the plurality of split cores and the plurality of coil units; and a plurality of notches coupled to one side of the plurality of insulators along the axial direction and open to the outside so that both ends of the wires of the plurality of coil parts can be accommodated and joined, respectively, and the plurality of coil parts are coupled to one side of the plurality of insulators. An annular wiring PCB connecting the wiring PCB in a conductive manner, wherein the plurality of insulators includes: an outer support portion contactable to the outer circumference of the wiring PCB along a radial direction; an inner plate support portion that protrudes from the plurality of coil portions along the axial direction and supports the inner plate surface of the wiring PCB; and an outer plate support portion that contacts the outer plate surface of the wiring PCB and supports the wiring PCB, wherein the outer plate support portion is formed to protrude inward along a radial direction from the outer peripheral support portion.

As a result, direct contact of the wires of the plurality of coil parts of the stator coil can be eliminated, making wiring of the coil parts easy.

In addition, since the outer circumference, inner surface, and outer surface of the wiring PCB can be supported, occurrence of radial clearance and axial clearance of the wiring PCB can be suppressed, respectively.

In addition, by simultaneously contacting and supporting the outer circumferential supports provided on each of the plurality of split cores on the outer circumference of the wiring PCB, the occurrence of radial clearance between the plurality of split cores can be suppressed.

Additionally, bonding defects due to radial and axial clearance of the wiring PCB can be suppressed.

In addition, the coupling of the plurality of split cores, the plurality of coil parts, and the wiring PCB can be secured, thereby providing reliability of assembly.

In one embodiment of the present invention, the stator may be arranged along the vertical direction, and the wiring PCB may be arranged above the stator.

In one embodiment of the present invention, the outer peripheral support portion and the inner plate support portion may be formed in all of the plurality of insulators, and the outer plate support portion may be formed in some of the plurality of insulators.

As a result, it is possible to prevent the connection PCB from being separated in a direction away from the plurality of insulators and prevent the connection of the connection PCB from becoming difficult due to an increase in the number of the outer plate support portions.

That is, the outer plate support portion is formed only in some of the insulators among the plurality of insulators, thereby preventing the wiring PCB from being separated in a direction away from the plurality of insulators and facilitating the coupling of the wiring PCB and the outer plate support portion. It can be done.

In one embodiment of the present invention, the split core is composed of an arc-shaped yoke, a tooth protruding from the yoke in a radial direction, and a shoe extending to both sides along the circumferential direction at the end of the tooth.

The rotor is comprised of a rotor core formed by insulating and laminating a plurality of annular electrical steel plates and a plurality of permanent magnets coupled to the outer surface of the rotor core.

A rotating shaft is coupled to the inside of the rotor core.

The insulator includes a first insulator and a second insulator that are coupled along the axial direction, each having a yoke insulator for insulating the yoke, a tooth insulator for insulating the teeth, and a shoe insulator for insulating the shoe. do.

The first insulator and the second insulator are respectively coupled to the corresponding split cores on both sides of each split core along the circumferential direction of the plurality of split cores.

In one embodiment of the present invention, the outer support portion is formed to contact the outer circumference of the wiring PCB to the yoke insulation portion, and the inner plate surface support portion is formed on the yoke support portion in an axial direction from a coil portion wound around the tooth insulation portion. It is formed to be spaced apart along and in contact with the inner plate surface of the wiring PCB.

As a result, the wiring PCB can be suppressed from moving outward along the radial direction, and the wiring PCB can be suppressed from moving toward the coil unit along the axial direction.

The outer plate surface support portion extends inward along the radial direction from a preset outer circumferential support portion among the plurality of outer peripheral supports spaced apart along the circumferential direction and is formed to contact the outer plate surface of the wiring PCB.

As a result, the wiring PCB can be suppressed from deviating in a direction away from the coil unit along the axial direction.

In one embodiment of the present invention, the outer surface of the outer plate support portion is provided with a guide inclined portion inclined inward with respect to the axial direction.

As a result, the outer circumference of the wiring PCB is guided inward by the guide inclined portion, so that the coupling of the wiring PCB and the outer plate support portion can be facilitated.

In one embodiment of the present invention, the wiring PCB is composed of a ring shape having an outer diameter of a preset size and an inner diameter of a preset size.

The outer diameter of the wiring PCB is smaller than the maximum outer diameter of the plurality of insulators, and the inner diameter of the wiring PCB is larger than the outer diameter of the rotor.

As a result, an increase in the outer diameter of the stator due to the formation of the outer support portion of the wiring PCB can be suppressed.

In addition, the inner space of the wiring PCB is increased, so that interference with other components such as the rotor (rotor core, rotation shaft) installed inside the stator can be suppressed.

In one embodiment of the present invention, the plurality of insulators are provided with guide pins protruding in the axial direction, and the wiring PCB is provided with guide pin holes formed through them to accommodate the guide pins.

As a result, the occurrence of gap in the plate surface direction and/or gap in the circumferential direction of the wiring PCB can be suppressed.

Additionally, the wiring PCB can be assembled at an accurate assembly position and maintained at the exact assembly position.

In one embodiment of the present invention, the guide pins are formed to be respectively disposed inside the outer circumferential support portion along the radial direction.

As a result, it is possible to suppress the occurrence of gap in the plate surface direction and gap in the circumferential direction of the wiring PCB, and also prevent difficulty in assembling the wiring PCB due to an increase in the number of guide pins.

In one embodiment of the present invention, the guide pin is configured to protrude from the inner plate support portion along the axial direction.

As a result, coupling of the outer support portion and the wiring PCB and coupling of the guide pin and guide pin hole can be easily achieved.

In one embodiment of the present invention, the inner plate support portion is formed on the inside of a point spaced apart from the outer plate support portion on both sides along the circumferential direction, and the guide pin is formed between the inner plate support portions.

An empty space is formed between the inner side of the outer plate support portion and the inner plate support portion.

As a result, the area between the wiring PCBs in contact with the inner plate support portion can be elastically deformed along the axial direction, thereby facilitating the coupling of the wiring PCB and the outer plate support portion.

In one embodiment of the present invention, the wiring PCB is formed by forming a ring-shaped substrate and having the plurality of notches on the outer periphery spaced apart from each other in the circumferential direction, and by joining the plurality of notches and the end of the wire to be able to conduct electricity. It is provided with a joint that can be

As a result, the ends of the wires of the plurality of coil parts of the stator coil are not directly contacted, but are connected to the notch of the wiring PCB, so that the stator coil can be connected quickly and easily.

In addition, both ends of the wires of the plurality of coil parts are respectively received and joined to the plurality of notches of the wiring PCB, so that the coupling of the plurality of split cores, the plurality of coil parts and the wiring PCB can be further strengthened. there is.

In one embodiment of the present invention, the wiring PCB is provided with an inclined portion inclined from the inside to the outside with respect to the axial direction so as to be in contact with the guide inclined portion.

As a result, the coupling of the outer plate support portion and the wiring PCB can be performed more easily.

In one embodiment of the present invention, a depression is formed in the wiring PCB inward from the outer periphery of the wiring PCB so that the outer plate surface support part can pass.

As a result, the coupling of the outer plate support portion and the wiring PCB can be made easier.

In one embodiment of the present invention, the recessed portion has a recessed bottom portion that is recessed along a radial direction and both side wall portions formed in the radial direction on both sides of the recessed bottom portion, and the inclined portion is formed in the recessed bottom portion.

As a result, when the outer plate support and the wiring PCB are coupled, the occurrence of elastic displacement of the outer plate support and the wiring PCB can be suppressed, and the occurrence of damage to the outer plate support and the wiring PCB can be suppressed.

In one embodiment of the present invention, the stator coil is composed of three phase coils to which each phase power of three-phase alternating current is connected.

The wiring PCB is provided with a connection pattern for electrically connecting the plurality of coil units so that the three phase coils can be formed respectively.

Thereby, the wiring work of the stator coil can be facilitated.

In one embodiment of the present invention, each of the three phase coils is provided with parallel coils connected in parallel to each other, and the plurality of notches are formed in the first phase so that both ends of the wires of the 12 coil units can be accommodated, respectively. It is composed of notches to the 24th notch.

The stator coil has four coil parts for each phase, and two of the four coil parts are connected to each other in series.

In one embodiment of the present invention, the wiring PCB includes a first layer, a second layer, a third layer, and a fourth layer that are insulated and laminated in layers, and the first layer, the second layer, the third layer, and the fourth layer are The above connection patterns are provided in each of the 4 layers.

As a result, the formation of the connection pattern can be facilitated.

In one embodiment of the present invention, the wiring PCB is provided with a lead wire connection part to which lead wires connecting the three phase coils and the three phase alternating current phase power supply are connected, and the connection pattern is such that the three phase coils It is comprised of a power connection part connecting one end to the lead wire connection part and a neutral wire connection part simultaneously connecting the other ends of the three phase coils.

By this, Y connection of the stator coil can be implemented.

In one embodiment of the present invention, the three phase coils include a u-phase coil, a v-phase coil, and a w-phase coil, and the lead wire connection portion is connected to the first layer, the second layer, the third layer, and the fourth layer. It may be formed in three of the layers, and the neutral wire connection portion may be formed in the remaining layers.

Here, the first layer is disposed on the uppermost layer of the substrate, the second layer is disposed below the first layer, the third layer is disposed below the second layer, and the fourth layer is It may be placed below (lowest) the third layer.

In one embodiment of the present invention, the first layer is provided with a u-phase power connection connecting the u-phase coil and the lead wire connection, and the second layer is provided with a v connecting the v-phase coil and the lead wire connection. A phase power connection is provided, the third layer is provided with a w-phase power connection connecting the w-phase coil and the lead wire connection, and the fourth layer is provided with a neutral line connection.

In one embodiment of the present invention, the substrate is formed in the order of the first layer, the second layer, the third layer, and the fourth layer along the vertical direction, but in another embodiment, the v-phase coil and the lead wire connection part A v-phase power connection connecting the v-phase power connection is formed in the first layer, a w-phase power connection connecting the w-phase coil and the lead wire connection is provided in the second layer, and the u-phase coil is connected to the lead wire connection. The u-phase power connection may be provided in the third layer, and the neutral line connection may be provided in the fourth layer.

As a result, since the line current of the phase coils (u-phase coil, v-phase coil, and w-phase coil) is the same as the phase current, the diameter of each wire can be reduced, and the number of turns of the plurality of coil parts can be increased accordingly. .

In one embodiment of the present invention, the first layer, the second layer, and the third layer are each provided with a series connection part for connecting the plurality of coil units in series.

In one embodiment of the present invention, the outer plate support portion may be implemented in plural pieces spaced apart along the circumferential direction.

Here, the outer plate support portion may be formed in a number smaller than the number of the plurality of coil portions.

More specifically, the outer plate support portion may be formed in two, three, four or six pieces at equal angular intervals along the circumferential direction.

As a result, the connection PCB effectively prevents the connection PCB from being separated from the plurality of insulators, and the number of the outer plate support portions is excessively increased, for example, beyond the number of the plurality of insulators, thereby increasing the connection PCB and the outer plate support portion. Difficult combination of can be prevented.

In one embodiment of the present invention, considering the connectivity of the connection PCB and the plurality of outer plate support portions and the degree of support of the connection PCB when an external force is applied in a direction away from the plurality of coil units, the outer plate support portion and the guide pin It may be desirable for each to consist of three.

As a result, the connection of the wiring PCB can be facilitated, and it can be stably supported after connection.

In one embodiment of the present invention, the motor has a ring shape and further includes a fixing ring coupled to the outer surface of the plurality of split cores in surface contact.

As a result, the bonding force of the plurality of split cores can be improved.

Additionally, clearance between the plurality of split cores can be prevented during operation.

In one embodiment of the present invention, the plurality of insulators are each provided with an expansion space portion extending outward along the radial direction corresponding to the plurality of notches.

As a result, joining the ends of the wires of the plurality of coil parts accommodated in the plurality of notches can be facilitated.

As described above, according to an embodiment of the present invention, the stator includes a plurality of split cores, a plurality of coil parts wound on the plurality of split cores, a plurality of insulators that insulate the plurality of coil parts, and a plurality of coil parts. It is provided with a wiring PCB that connects the wiring PCB to be able to conduct electricity, and a plurality of insulators include an outer circumferential support portion that is in contact with the outer circumference of the wiring PCB, an inner plate support portion that supports the inner plate surface of the wiring PCB, and an outer surface that supports the outer surface of the wiring PCB. By providing a plate support portion, it is possible to suppress the occurrence of bonding defects due to distortion of the wiring PCB when soldering the wiring PCB.

In addition, due to mutual contact and coupling of the wiring PCB with the outer support, the inner plate support, and the outer plate support, the bonding force of the plurality of split cores can be improved and the reliability of assembly can be improved.

In addition, the radial clearance of the plurality of split cores is suppressed, and the air gap with the rotor is made uniform, thereby improving the output of the motor.

In addition, both ends of the plurality of coil parts are respectively bonded to the disconnection PCB to suppress the occurrence of gap, thereby suppressing the occurrence of disconnection and/or damage to the wires of the plurality of coil parts.

In addition, the wires can be connected quickly and easily by joining the ends of the wires to the wiring PCBs instead of connecting the ends of the stator coil wires by directly contacting them.

In addition, both radial clearance and axial clearance of the wiring PCB can be suppressed by the outer peripheral support portion, the inner plate support portion, and the outer plate support portion.

In addition, the plurality of insulators are provided with guide pins that protrude in the axial direction, and guide pin holes are formed through the wiring PCB, so that the wiring PCB can be accurately assembled at the assembly position.

As a result, each end of the wire of the plurality of coil parts can be accurately joined to the corresponding notch. In addition, since the joint is formed at an accurate location, there is no concern that other areas of the wiring PCB will be unnecessarily heated by the soldering device and generate soot.

In addition, the inner plate support portion is formed on the inside of a point spaced apart from the outer plate support portion on both sides in the circumferential direction, and the guide pin is formed between the two inner plate support portions, thereby providing a connection between the outer plate support portion and the wiring PCB. When coupled, the wiring PCB is elastically deformed, allowing quick and easy coupling with the outer plate support portion.

In addition, the outer surface of the outer plate support portion is provided with a guide slope inclined with respect to the axial direction, so that the coupling of the outer plate support portion and the wiring PCB can be facilitated.

In addition, since the wiring PCB is provided with an inclined portion inclined with respect to the axial direction so as to contact the guide inclined portion, the coupling of the wiring PCB and the outer plate support portion can be made easier.

In addition, a depression is formed in the wiring PCB along the radial direction from the outer circumference of the wiring PCB to allow the outer plate support portion to pass, thereby making it easier to combine the wiring PCB.

In addition, the recessed portion has a recessed bottom portion radially recessed from the outer periphery of the wiring PCB and both side wall portions radially disposed on both sides of the recessed bottom portion, and the inclined portion is formed in the recessed bottom portion, thereby connecting the wiring PCB. When the PCB and the outer plate support portion are combined, the pressing force of the wiring PCB can be reduced, making it easier to combine the wiring PCB.

In addition, the wiring PCB is provided with a connection pattern for connecting the plurality of coil parts in a preset pattern, so that wiring of the plurality of coil parts can be facilitated.

In addition, the wiring PCB includes a first layer, a second layer, a third layer, and a fourth layer that are combined in layers, and each layer is provided with the connection pattern, thereby causing overlap or interference between the connection patterns. This can be suppressed.

In addition, the plurality of coil portions are composed of 12 pieces, and the outer plate support portion is composed of 2, 3, 4, or 6 pieces, thereby reducing contact between the outer plate support portion and the wiring PCB, thereby facilitating coupling of the wiring PCB. You can.

In addition, by disposing the outer plate support portions at equal angular intervals, it is possible to effectively prevent the wiring PCB from deviating outward along the axial direction.

Additionally, by providing a fixing ring on the outer surface of the plurality of split cores in surface contact, the occurrence of radial clearance between the plurality of split cores can be suppressed.

Additionally, the plurality of insulators are provided with an expansion space portion that extends outward along the radial direction corresponding to the notch of the wiring PCB, so that soldering the notch can be facilitated.

In addition, the rotor is comprised of a ring-shaped rotor core and a plurality of permanent magnets coupled to the outer surface of the rotor core, so that the plurality of permanent magnets can be arranged close to the stator core, thereby improving the output of the motor. there is.

In addition, the rotor core is formed by insulating and stacking a plurality of annular electrical steel plates, thereby suppressing the occurrence of iron loss.

1 is a plan view of a motor according to an embodiment of the present invention;
Figure 2 is a side view of the motor of Figure 1;
Figure 3 is a perspective view of the wiring PCB of the motor of Figure 1 before combination;
Figure 4 is a diagram for explaining the combination of the wiring PCB of Figure 3;
Figure 5 is an enlarged perspective view of the insulator showing the inner plate support portion, outer peripheral support portion, and outer plate support portion of Figure 3, respectively;
Figure 6 is a perspective view of the split core and fixed ring of Figure 3 before combination;
Figure 7 is a view showing two outer plate support portions and two guide pins of a motor according to another embodiment of the present invention, respectively;
Figure 8 is a view showing four outer plate support portions and four guide pins of a motor according to another embodiment of the present invention;
Figure 9 is a view showing six outer plate support portions and six guide pins of a motor according to another embodiment of the present invention, respectively;
FIG. 10 is a view showing the inner plate support, outer support, outer plate support, and guide pin of FIG. 3;
Figure 11 is a side view of the guide slope of Figure 10;
Figure 12 is an enlarged view of the outer plate surface support of Figure 4;
Figure 13 is a plan view of the stator excluding the wiring PCB of Figure 3;
FIG. 14 is a diagram for explaining the correspondence between the wiring PCB of FIG. 3 and a plurality of coil units;
Figure 15 is a circuit diagram of a stator coil connected by the wiring PCB of Figure 14;
Figure 16 is a plan view of the first layer of the wiring PCB of Figure 14;
Figure 17 is a plan view of the second layer of the wiring PCB of Figure 14;
Figure 18 is a plan view of the third layer of the wiring PCB of Figure 14;
Figure 19 is a plan view of the fourth layer of the wiring PCB of Figure 14;
Figure 20 is a view showing the inner plate support and guide pin of the motor according to another embodiment of the present invention;
Figure 21 is a cross-sectional view of the inner plate support portion, the outer plate support portion, and the wiring PCB of the motor of Figure 20 in a combined state;
Figure 22 is a cross-sectional view of the connection area of the outer support part, the outer plate support part, and the wiring PCB of the motor according to another embodiment of the present invention;
Figure 23 is a bottom view of the recessed and inclined areas of the wiring PCB of Figure 22;
FIG. 24 is a plan view of the recessed and inclined portions of the wiring PCB of FIG. 22.

Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. In this specification, the same or similar reference numbers are assigned to the same or similar components even in different embodiments, and the description is replaced with the first description. As used herein, singular expressions include plural expressions unless the context clearly dictates otherwise. Additionally, in describing the embodiments disclosed in this specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed descriptions will be omitted. In addition, it should be noted that the attached drawings are only for easy understanding of the embodiments disclosed in this specification, and should not be construed as limiting the technical idea disclosed in this specification by the attached drawings.

Figure 1 is a plan view of a motor according to an embodiment of the present invention, Figure 2 is a side view of the motor of Figure 1, Figure 3 is a perspective view of the wiring PCB of the motor of Figure 1 before combination, and Figure 4 is a wiring diagram of Figure 3. This is a diagram to explain the combination of PCB. As shown in FIGS. 1 to 4, a motor according to an embodiment of the present invention includes a stator 200 and a rotor 100.

In this embodiment, the rotor 100 is rotatably accommodated within the stator 200 with a predetermined air gap (G).

The rotor 100 includes, for example, a rotating shaft 110 and a rotor core 120 coupled to the rotating shaft 110.

The rotor core 120 may be implemented in a ring shape, for example.

The rotor core 120 is configured to have an inner diameter and an outer diameter of preset sizes, respectively.

The rotating shaft 110 may be inserted and coupled to the inside of the rotor core 120.

A rotating shaft hole 1202 is formed through the rotor core 120 so that the rotating shaft 110 can be inserted and coupled thereto.

For example, as shown in FIG. 2, the rotation shaft 110 may be configured to extend to both sides of the rotor core 120 along the axial direction.

In this embodiment, based on FIG. 2, the axial direction may be expressed as the longitudinal direction or vertical direction of the rotation axis 110.

The outer peripheral surface of the rotary shaft 110 may be coupled to the inner peripheral surface of the rotor core 120 in surface contact.

As shown in FIG. 3, the rotor core 120 may be constructed by insulating and stacking a plurality of annular electrical steel plates 1201.

As a result, the occurrence of iron loss in the rotor core 120 can be suppressed.

In this embodiment, a plurality of electrical steel plates 1201 of the rotor core 120 may be stacked along the axial direction.

The rotor 100 is comprised of a permanent magnet 130.

The permanent magnet 130 may be provided, for example, on the outer peripheral surface of the rotor core 120.

As a result, the permanent magnet 130 can be placed close to the stator 200 (split core 210, which will be described later), so that the output of the motor can be improved.

The permanent magnets 130 are implemented in plural numbers.

The permanent magnets 130 are implemented as, for example, 10 pieces.

The permanent magnet 130 is configured to have different magnetic poles (N pole, S pole) alternately arranged along the circumferential direction.

The plurality of permanent magnets 130 may each be configured to make surface contact with the outer peripheral surface of the rotor core 120.

The plurality of permanent magnets 130 each have an inner peripheral surface that contacts the outer peripheral surface of the rotor core 120.

The inner peripheral surface of each permanent magnet 130 is configured to have a radius of curvature corresponding to the outer peripheral surface of the rotor core 120.

For example, the permanent magnet 130 may be adhesively coupled to the rotor core 120 using an adhesive.

In this embodiment, the rotor 100 illustrates a case where the permanent magnet 130 is coupled to the outer peripheral surface of the rotor core 120 (surface attached type), but the permanent magnet 130 is connected to the rotor core 120. It may be configured (embedded type) to be inserted and coupled to the inside of (120) along the axial direction.

In this embodiment, the case where the permanent magnets 130 are implemented as 10 is exemplified, but it is not limited thereto. For example, it may have a ring shape and be coupled to the outer surface of the rotor core 120, and may be configured to form different magnetic poles (N pole, S pole) along the circumferential direction.

The stator 200 includes, for example, a stator core 209, a stator coil 230 wound around the stator core 209, and an insulator ( 250).

In this embodiment, the stator core 209 is comprised of a plurality of split cores 210 that are joined in an annular shape.

A fixing ring 205 is provided on the outer surface of the stator core 209.

As a result, the rigidity (coupling force) of the plurality of split cores 210 can be strengthened.

The fixing ring 205 may be formed of, for example, a non-magnetic member.

As a result, leakage of magnetic flux from the plurality of split cores 210 can be suppressed.

The inner peripheral surface of the fixing ring 205 may be configured to be in surface contact with the outer peripheral surface of the plurality of split cores 210.

As shown in FIGS. 1 and 3, in this embodiment, the plurality of split cores 210 may be implemented as 12, for example.

An internal angle between both ends along the circumferential direction of each of the plurality of split cores 210 is configured to form an angle of approximately 30 degrees.

The stator coil 230 includes a plurality of coil parts 240 each wound around the plurality of split cores 210.

For example, the plurality of coil units 240 may each be wound around the plurality of split cores 210 in a centralized winding manner.

Here, in the concentrated winding method, as is well known, one end of a long wire 2401 is fixed to the circumference of the tooth 217, and the other end is continuously connected along the circumferential direction of the tooth 217. It refers to a winding method that involves winding with a preset number of turns.

The plurality of coil parts 240 wound in the centralized winding manner may each extend outward to a preset length so that both ends of the wire 2401 can be spaced apart from the coil part 240 for wiring.

Here, two ends of the wires 2401 of the plurality of coil parts 240 may be provided, for example, on both sides of the teeth 217 along the circumferential direction.

The plurality of coil units 240 may be implemented as 12 pieces.

The stator coil 230 has a total of 24 ends of the wire 2401 because each of the 12 coil parts 240 has two ends before wiring.

The end of each wire 2401 of the plurality of coil units 240 is bonded to the corresponding notch 285 of the wiring PCB 280, which will be described later, and then unnecessary portions can be cut and removed.

In this embodiment, the plurality of split cores 210 and the plurality of coil units 240 are implemented as 12 each, but the present invention is not limited thereto.

The insulator 250 is configured to insulate the plurality of split cores 210 and the plurality of coil units 240. In this embodiment, the number of insulators 250 may be implemented as 12.

For example, the insulator 250 may be configured to be coupled to each other along the axial direction with the plurality of split cores 210 interposed therebetween.

The insulator 250 is composed of a first insulator 250a and a second insulator 250b that are coupled to each other along the axial direction with the plurality of split cores 210 interposed therebetween.

The first insulator 250a and the second insulator 250b are each composed of 12 pieces.

Based on FIG. 2, the first insulator 250a is coupled at one side (upper side) of the split core 210 along the axial direction, and the second insulator 250b is coupled to the other side of the split core 210. On the side (lower side), the plurality of split cores 210 may be combined to be accommodated inside.

Although not specifically shown in the drawing, the lower end of the first insulator 250a (the end on the second insulator 250b side) and the upper end of the second insulator 250b (the end on the first insulator 250a side) may come into contact with each other. For example, the lower end of the first insulator 250a and the upper end of the second insulator 250b are in contact with each other at approximately the midpoint of the split core 210 along the vertical direction of the split core 210. It can be configured.

Meanwhile, on one side (upper side in the drawing) of the stator 200 along the axial direction, there is a wiring PCB 280 that connects the plurality of coil parts 240 of the stator coil 230 to a three-phase AC power source. It is provided.

The wiring PCB 280 is formed, for example, in a ring shape.

The wiring PCB 280 is configured to have an outer diameter 2812 that is larger than the outer diameter of the rotor 100, for example. As a result, interference between the wiring PCB 280 and the rotor 100 can be suppressed when the rotor 100 moves in the axial direction.

The outer diameter 2812 of the wiring PCB 280 is, for example, smaller than the outer diameter of the stator 200. As a result, an increase in the radial size of the stator 200 due to the wiring PCB 280 can be suppressed.

The wiring PCB 280 is provided with a plurality of notches 285 so that each end of the wire 2401 of the plurality of coil parts 240 can be accommodated.

The plurality of notches 285 may be disposed on both sides of the teeth 217 along the circumferential direction when the wiring PCB 280 is coupled.

The wiring PCB 280 is comprised of, for example, a ring-shaped substrate 281 and a plurality of notches 285 recessed along the radial direction from the outer periphery of the substrate 281.

The wiring PCB 280 may be implemented as an annular shape in which the size of the inner diameter 2801 relative to the outer diameter 2812 is relatively large. The inner diameter 2811 may be implemented as 65.9 to 71.9% of the outer diameter 2812.

More specifically, for example, the inner diameter 2811 of the substrate 281 is 77.2 mm, the outer diameter 2812 is 112.0 mm, and the width along the radial direction of the substrate 281 (outer diameter ( The difference between 2812) and the inner diameter 2811 can be implemented as 34.8mm.

The plurality of notches 285 are each formed to open outward along the radial direction.

In this embodiment, the plurality of coil parts 240 is 12, and each coil part 240 is each provided with an end portion of two wires 2401, so that the plurality of notches 285 of the wiring PCB 280 is implemented in 24 pieces.

Each end of the plurality of coil units 240 may be accommodated in each notch 285 of the wiring PCB 280 and then joined by soldering.

The wiring PCB 280 is configured to include a connection pattern 290, which will be described later, that connects (connects) the plurality of coil units 240 in a preset pattern.

As a result, the plurality of coil units 240 are connected to a three-phase power supply and are connected to a plurality of phase coils in which the ends of each phase (u-phase, v-phase, w-phase) are simultaneously connected (neutral point connection). You can.

The plurality of insulators 250 are provided with a wiring PCB support portion 260 that supports the wiring PCB 280.

The wiring PCB support portion 260 is configured to support the wiring PCB 280 in the axial direction and the radial direction, respectively.

As a result, the axial clearance of the wiring PCB 280 supported by the wiring PCB support portion 260 can be suppressed, as well as the radial clearance of the wiring PCB 280 can be suppressed.

According to this configuration, in the process of inserting and joining each end of the plurality of coil portions 240 into the plurality of notches 285 of the wiring PCB 280, the wiring PCB 280 is formed in the axial and radial directions. Since they can be fixed respectively, the occurrence of bonding defects due to axial clearance and radial clearance of the wiring PCB 280 can be suppressed.

The plurality of insulators 250 are provided with an outer support portion 261 that can contact the outer circumference of the wiring PCB 280 along the radial direction.

As a result, movement (gap) of the wiring PCB 280 along the radial direction can be suppressed.

The plurality of insulators 250 includes an inner plate support portion 262 that protrudes from the plurality of coil units 240 along the axial direction and supports the inner plate surface 2801 of the wiring PCB 280.

Here, the inner plate surface 2801 of the wiring PCB 280 refers to the plate surface closest to the stator coil 230 among the two plate surfaces of the wiring PCB 280. The inner plate surface 2801 of the wiring PCB 280 may be referred to as the bottom surface of the wiring PCB 280.

As a result, the wiring PCB 280 is seated and supported on the inner plate support portion 262, so that when an external force is applied, the wiring PCB 280 approaches the plurality of coil units 240 along the axial direction. Movement (displacement) to can be suppressed.

The plurality of insulators 250 are provided with an outer plate support portion 263 that contacts the outer plate surface 2802 of the wiring PCB 280 and supports the wiring PCB 280.

As a result, movement (gap) of the wiring PCB 280 away from the plurality of coil units 240 along the axial direction can be suppressed.

Here, the outer plate surface 2802 of the wiring PCB 280 refers to the surface opposite to the inner plate surface 2801 among the two plate surfaces of the wiring PCB 280. The outer plate surface 2802 of the wiring PCB 280 may be referred to as the upper surface of the wiring PCB 280.

Figure 5 is a perspective view of the insulator showing the inner plate support portion 262, the outer peripheral support portion, and the outer plate support portion of Fig. 3, respectively, and Fig. 6 is a perspective view of the split core and the fixing ring of Fig. 3 before being combined.

As shown in FIG. 5, the plurality of insulators 250 each include a first insulator 250a and a second insulator 250b coupled to each other along the axial direction.

The plurality of split cores 210 are provided with a yoke 215, a tooth 217 protruding in the radial direction from the yoke 215, and a shoe 219 extending in the circumferential direction at an end of the tooth 217. (see Figure 14).

The plurality of split cores 210 are each formed by insulating and stacking a plurality of electrical steel sheets 212.

As a result, the occurrence of iron loss in each of the plurality of split cores 210 can be suppressed.

Slots 218 are formed between two teeth 217 sequentially arranged along the circumferential direction of the stator core 209 (see FIG. 14).

The teeth 217 and slots 218 are alternately arranged along the circumferential direction of the stator core 209.

The plurality of insulators 250 include a yoke insulator 2501 that insulates the yoke 215, a tooth insulator 2502 that insulates the tooth 217, and a shoe insulator that insulates the shoe 219. It is composed of each having (2503).

The tooth insulating portion 2502 is configured to surround and insulate the peripheral surface (top surface, bottom surface, both sides) of the tooth 217.

The yoke insulation portion 2501 is configured to insulate the inner surface of the yoke 215 along the radial direction.

The shoe insulating portion 2503 is configured to surround and insulate the outer surface of the shoe 219 along the radial direction.

The yoke insulating part 2501 has an external guide 25011 that protrudes outward compared to the tooth insulating part 2502 along the axial direction.

The external guide 25011 is provided with an expansion space portion 2504 extending outward on the inner surface along the radial direction.

The expansion space portion 2504 is formed to correspond to the notch 285 of the wiring PCB 280.

The expansion space 2504 may be formed to extend along the axial direction.

The external guide 25011 is provided with two expansion space parts 2504, respectively.

As a result, the corresponding ends of the wires 2401 are each accommodated inside each notch 285, so that interference during joining (soldering) can be suppressed.

As a result, joining the notch 285 and the end of the wire 2401 can be facilitated.

The shoe insulating part 2503 has an inner guide 25031 that protrudes relative to the tooth insulating part 2502 along the axial direction.

The first insulator 250a and the second insulator 250b are configured to include the yoke insulator 2501, tooth insulator 2502, and shoe insulator 2503, respectively.

The first insulator 250a and the second insulator 250b are implemented to overlap each other along the radial direction.

As a result, a creepage distance between the plurality of coil parts 240 wound around the tooth insulating part 2502 and the plurality of split cores 210 can be extended.

As a result, the insulation performance of the plurality of coil units 240 can be improved.

More specifically, the mutual coupling area of the first insulator 250a and the second insulator 250b may be provided with a first overlapping part 2505a and a second overlapping part 2505b that overlap each other along the radial direction. there is.

The first overlapping portion 2505a may be disposed outside the second overlapping portion 2505b along the radial direction.

In this embodiment, the first overlapping part 2505a may be provided in the first insulator 250a, and the second overlapping part 2505b may be provided in the second insulator 250b.

Here, the first overlapping portion 2505a and the second overlapping portion 2505b may be formed on the yoke insulating portion 2501, the tooth insulating portion 2502, and the shoe insulating portion 2503, respectively.

Meanwhile, the inner plate support portion 262 is provided on one side (upper side) of the plurality of insulators 250 along the axial direction.

For example, the inner plate support portion 262 is formed to protrude in the axial direction from the first insulator 250a.

The inner plate support portion 262 is provided in the yoke insulating portion 2501.

More specifically, the inner plate support portion 262 is provided at one end (upper end in the drawing) of the external guide 25011 along the axial direction.

The inner plate support portion 262 is disposed at the center of the end (upper end) of the external guide 25011 along the circumferential direction.

The outer support portion 261 is provided at the outer edge area of the plurality of insulators 250 along the radial direction.

The outer peripheral support portion 261 is configured to protrude from the inner plate support portion 262 in the axial direction.

The outer peripheral support portion 261 is formed to protrude in the axial direction from the outer end of the inner plate support portion 262 along the radial direction.

The outer peripheral support portion 261 is arranged substantially perpendicular to the inner plate support portion 262.

Meanwhile, the outer plate support portion 263 may be formed only on some of the plurality of insulators 250.

As a result, it is possible to prevent the wiring PCB 280 from being separated from the outside and to prevent excessive increase in the contact area between the wiring PCB 280 and the outer plate support portion 263, thereby preventing the wiring PCB 280 from being separated from the outside. ) can be easily combined.

In this embodiment, the outer plate support portion 263 is implemented in three pieces.

Specifically, as shown in (a) of FIG. 5, the outer plate surface support portion 263 is provided on a portion of the outer peripheral support portion 261.

As shown in FIG. 6, the inner plate support portion 262 and the outer circumferential support portion 261 are both formed in the plurality of insulators 250.

The inner plate surface 2801 of the wiring PCB 280 may be in contact with the inner plate support portion 262 at 12 points.

As a result, the occurrence of axial clearance in the wiring PCB 280 can be suppressed.

The outer circumference of the wiring PCB 280 may be in contact with the outer circumferential support portion 261 at 12 points.

As a result, the occurrence of radial clearance in the wiring PCB 280 can be suppressed.

The outer plate support portion 263 is formed, for example, on three insulators 250 among the plurality of insulators 250.

As a result, the occurrence of deviation in the outer direction of the wiring PCB 280 along the axial direction can be suppressed.

The outer plate support portion 263 is arranged at equal angle intervals along the circumferential direction.

As a result, when an external force is applied to the wiring PCB 280, it can be effectively distributed and supported.

The outer plate support portion 263 is formed to protrude inward along the radial direction from an end of the outer circumferential support portion 261.

When combined with the wiring PCB 280, the outer plate support portion 263 is in contact with the outer plate surface 2802 of the wiring PCB 280.

As a result, movement (gap) of the wiring PCB 280 outward along the axial direction can be suppressed.

The plurality of insulators 250 are provided with guide pins 264 protruding in the axial direction.

Correspondingly, the wiring PCB 280 is provided with a guide pin hole 287 through which the guide pin 264 can be inserted.

As a result, the wiring PCB 280 can be assembled at the correct assembly position.

The guide pin 264 is disposed inside the outer support portion 261 along the radial direction.

The guide pin 264 protrudes from the inner plate support portion 262 along the axial direction.

In this embodiment, the guide pins 264 are implemented as three, for example.

For example, the guide pins 264 may be provided on each of the insulators 250 on which the outer plate support portion 263 is provided.

As a result, the wiring PCB 280 can be coupled while checking the guide pin 264 through the guide pin hole 287 of the wiring PCB 280, so that the wiring PCB 280 is connected to the stator 200. Since the connection is made while placed at the correct connection position, the connection of the wiring PCB 280 can be facilitated.

In this embodiment, the guide pin 264 is formed to a length that can be inserted into the guide pin hole 287 less than half the thickness (t) of the wiring PCB 280.

This is to prevent the guide pin 264 from being damaged when the guide pin 264 is inserted with a length greater than half the thickness of the wiring PCB 280 because the diameter of the guide pin 264 is small. .

Figure 7 is a diagram showing two outer plate supports and guide pins of a motor according to another embodiment of the present invention, and Figure 8 is a diagram showing four outer plate supports and guide pins of a motor according to another embodiment of the present invention, respectively. This is a drawing, and Figure 9 is a drawing showing six outer plate support portions and six guide pins of a motor according to another embodiment of the present invention.

As shown in FIG. 7, the wiring PCB support portion 2601 of the motor of this embodiment is comprised of two outer plate support portions 263.

The outer plate support portions 263 may be formed at positions facing each other.

The outer plate support portion 263 may be formed at intervals of 180 degrees along the circumferential direction.

More specifically, among the 12 insulators 250, the inner plate support portion 262 is formed in all 12 insulators 250. The outer support portion 261 has the first length in the ten insulators 250, and the outer support portion 261 has the second length in the two insulators 250 facing each other. ) is formed.

The outer peripheral support portion 261 having the second length is provided with the outer plate support portion 263 that protrudes inward along the radial direction.

A guide inclined portion 2631 is provided on the outer surface of each of the outer plate support portions 263 to guide the wiring PCB 280 inward when in contact with the wiring PCB 280.

Guide pins 264 protruding in the axial direction are formed on the inner plate support portion 262 of the insulator 250 on which the outer plate support portion 263 is formed.

Although not specifically shown in the drawing, the wiring PCB 280 of this embodiment is provided with two guide pin holes 287 to accommodate the guide pin 264.

As shown in FIG. 8, the wiring PCB support portion 2602 of the motor of this embodiment is comprised of four outer plate support portions 263.

The outer plate support portion 263 may be spaced apart at 90-degree intervals along the circumferential direction.

More specifically, among the 12 insulators 250, the inner plate support portion 262 is formed in all 12 insulators 250. The outer circumferential support portion 261 is formed in the eight insulators 250 with the outer circumferential support portion 261 of the first length, and in the four insulators 250 spaced apart from each other at 90 degree intervals, the outer circumferential support portion 261 of the second length is formed ( 261) are formed respectively.

Two outer peripheral supports 261 of the first length are disposed between the second length outer peripheral supports 261 on which the outer plate support portion 263 is formed.

The outer peripheral support portion 261 having the second length is provided with the outer plate support portion 263, respectively.

On the outer surface of the outer plate support portion 263, a guide inclined portion 2631 is formed that is inclined inward to guide the wiring PCB 280.

The insulator 250 on which the outer plate support portion 263 is formed is each provided with a guide pin 264 protruding in the axial direction from the inner plate support portion 262.

The guide pins 264 are implemented in four pieces.

Although not specifically shown in the drawing, four guide pin holes 287 are formed through the wiring PCB 280 of this embodiment to accommodate the four guide pins 264, respectively.

As shown in FIG. 9, the wiring PCB support portion 2603 of the motor of this embodiment is comprised of six outer plate support portions 263.

The outer plate support portion 263 may be spaced apart at 60 degree intervals along the circumferential direction.

More specifically, among the 12 insulators 250, the inner plate support portion 262 is formed in all 12 insulators 250. Among the 12 insulators 250, the outer support portion 261 of the first length is formed in six insulators 250, and the outer support portion 261 of the second length is formed in the six insulators 250. The outer support portions 261 of the first length and the outer support portions 261 of the second length are alternately arranged along the circumferential direction.

The outer peripheral support portion 261 of the second length is provided with an outer plate support portion 263 that protrudes inward along the radial direction.

The outer plate support portion 263 is implemented in six pieces.

A guide inclined portion 2631 is provided on the outer surface of the outer plate support portion 263 to guide the wiring PCB 280 inward.

Although not specifically shown in the drawing, six guide pin holes 287 are formed through the wiring PCB 280 of this embodiment to accommodate each of the six guide pins 264.

FIG. 10 is a view showing the inner plate support, the outer peripheral support, the outer plate support, and the guide pin of FIG. 3, FIG. 11 is a side view of the guide inclined portion of FIG. 10, and FIG. 12 is an enlarged view of the outer plate support of FIG. 4. , FIG. 13 is a plan view of the stator excluding the wiring PCB of FIG. 3.

As shown in FIGS. 10 and 13, the plurality of insulators 250 support an outer support portion 261 contactable with the outer circumference of the wiring PCB 280 and an inner plate surface 2801 of the wiring PCB 280. It is provided with an inner plate support portion 262 and an outer plate support portion 263 that supports the outer plate surface 2802 of the wiring PCB 280.

The inner plate support portion 262 is provided at the center of each of the plurality of insulators 250 along the circumferential direction.

The inner plate support portion 262 protrudes from the ends of the plurality of insulators 250, in fact, from the end surface of the external guide 25011 at a predetermined length.

The wiring PCB 280 is supported by 12 inner plate support portions 262, one for each of the 12 insulators 250.

Since the wiring PCB 280 is supported by the inner plate support portion 262, it does not come into contact with the outer guide 25011, coil portion 240, and inner guide 25031 of the plurality of insulators 250 and moves in an axial direction. are spaced apart from each other.

The inner plate surface 2801 of the wiring PCB 280 is seated on twelve inner plate supports 262 spaced apart at approximately 30 degrees along the circumferential direction.

As a result, the wiring PCB 280 can be stably supported by an external force acting on the wiring PCB 280 toward the plurality of coil units 240 along the axial direction.

An expansion space portion 2504 extending outward is provided on the inner surface of the external guide 25011 of the plurality of insulators 250. The expansion space portion 2504 is formed on both sides of the inner plate support portion 262 along the circumferential direction.

The expansion space portion 2504 is formed to be spaced apart from the inner plate support portion 262 in both directions along the circumferential direction.

The expansion space 2504 is formed to be recessed outward along the radial direction from the inner surface of the external guide 25011.

The outer peripheral support portion 261 is provided in the outer edge area of the inner plate support portion 262 along the radial direction.

The outer peripheral support portion 261 is formed to extend in the axial direction from the inner plate support portion 262.

The outer support portion 261 protrudes from the inner plate support portion 262 along the axial direction to a preset length.

Referring again to FIG. 6, in this embodiment, the outer support portion 261 may be formed to have different lengths along the axial direction.

The outer peripheral support portion 261 has a first length (L1) when the outer plate support portion 263 is not formed, and has a first length (L1) when the outer plate support portion 263 is formed. It may be configured to have a long second length (L2).

For example, the first length L1 may be formed to be about half (1/2) the thickness of the wiring PCB 280.

The second length L2 may be formed to have a length corresponding to the thickness of the wiring PCB 280.

According to this configuration, excessive increase in the amount of material input for forming the outer support portion 261 can be suppressed.

Additionally, the weight of the plurality of insulators 250 can be reduced.

The outer circumferential support portion 261 has a width along the circumferential direction equal to the width of the inner plate support portion 262.

The outer circumferential support portion 261 is implemented so that its inner surface is in surface contact with the wiring PCB 280.

The inner surface of the outer support portion 261 is implemented in an arc shape.

The inner surface of the outer support portion 261 may be implemented with a radius of curvature corresponding to the outer diameter 2812 of the wiring PCB 280.

As a result, the outer circumference of the wiring PCB 280 and the inner surface of the outer support portion 261 can be brought into surface contact.

The inner surface of the outer circumferential support portion 261 may be formed to be disposed on the outside with an assembly tolerance equal to the outer diameter 2812 of the wiring PCB 280.

The outer plate support portion 263 is provided on one side (upper side in the drawing) of the outer circumferential support portion 261 along the axial direction.

The outer plate support portion 263 has a width along the circumferential direction equal to the width of the outer circumferential support portion 261.

As shown in FIG. 11, a guide inclined portion 2631 inclined inward along the radial direction is provided on the outer surface of the outer circumferential support portion 261.

As a result, when the wiring PCB 280 is coupled, the wiring PCB 280 is guided inward by the guide inclined portion 2631, thereby facilitating coupling.

The guide pin 264 is provided inside the outer support portion 261 along the radial direction.

The guide pin 264 is formed to protrude in the axial direction from the end (upper part in the drawing) of the inner plate support portion 262.

The protruding length of the guide pin 264 is formed to be about half (1/2) the thickness of the wiring PCB 280.

Referring to FIG. 11, a coil portion 240 is wound around the tooth insulation portion 2502 between the outer guide 25011 and the inner guide 25031.

The coil part 240 is configured so that its upper end is disposed lower than the upper end of the external guide 25011 and the upper end of the internal guide 25031 along the axial direction.

As a result, the insulation distance between the wiring PCB 280 and the coil unit 240 can be secured.

By this configuration, the plurality of insulators 250 are respectively coupled to the plurality of split cores 210, and the plurality of coil portions 240 are formed around the tooth insulation portion 2502 of the plurality of insulators 250. ) are each wound. At this time, both ends of the wires 2401 of the plurality of coil units 240 may be disposed to be angled toward one side (upper side) along the axial direction.

Here, each end of the wire 2401 of the plurality of coil parts 240 may be accommodated inside the expansion space part 2504.

As shown in FIG. 10, the plurality of split cores 210 on which the plurality of coil parts 240 are each wound are joined in an annular shape to form a rotor receiving space therein.

The fixing ring 205 is coupled to the outer surface of the plurality of split cores 210 coupled in an annular shape.

Meanwhile, when attempting to couple the wiring PCB 280 to the plurality of insulators 250, the inner plate support portion 262, the outer support portion 261, and the outer plate support portion 263 are positioned on one side along the axial direction ( Arrange the plurality of pieces facing toward the top (in the drawing).

Next, the guide pin hole 287 of the wiring PCB 280 adjusts the rotational position of the wiring PCB 280 to correspond to the guide pin 264.

The guide pin 264 is disposed correspondingly to the lower side of the guide pin hole 287 along the axial direction, and the wiring PCB 280 is disposed on the guide inclined portion 2631 of the outer support portion 261.

Next, when the wiring PCB 280 is pressed toward the plurality of coil parts 240 along the axial direction, the guide pin 264 is inserted into the corresponding guide pin hole 287, and the wiring PCB 280 The outer periphery (border) slides relative to the guide inclined portion 2631.

The outer plate support portion 263 is elastically deformed outward along the radial direction by contacting and pressing the outer circumference of the wiring PCB 280, and the inner plate surface 2801 of the wiring PCB 280 is in contact with the inner plate support portion 262. ), the axial movement stops. When the wiring PCB 280 is seated on the inner plate support 262, the outer plate support 263 returns to its initial position, and the inner surface of the outer plate support 263 is the outer plate of the wiring PCB 280. (2802) is contacted.

As a result, the inner plate surface 2801 of the wiring PCB 280 is supported in the axial direction by contacting the 12 inner plate surface supports 262, and the outer circumference of the wiring PCB 280 is supported by the 12 outer peripheral supports 261. Radial movement can be suppressed by this.

As shown in FIG. 13, the wiring PCB 280 can be prevented from axial deviation by having the outer plate surface 2802 axially supported by the three outer plate support portions 263.

Meanwhile, when the coupling of the wiring PCB 280 is completed, as shown in FIG. 12, both ends of the wire 2401 of the corresponding coil portion 240 are inserted into the notch 285 of the wiring PCB 280. , each end of the coil portion 240 and the corresponding notch 285 can be joined by soldering. At this time, the soldering work between the end of the coil unit 240 and the corresponding notch 285 can be facilitated by the expansion space portion 2504 formed to correspond to each notch 285.

FIG. 14 is a diagram for explaining the correspondence between the wiring PCB of FIG. 3 and a plurality of coil units, FIG. 15 is a circuit diagram of a stator coil connected by the wiring PCB of FIG. 14, and FIG. 16 is a diagram of the wiring PCB of FIG. 14. It is a top view of the first layer, FIG. 17 is a top view of the second layer of the wiring PCB of FIG. 14, FIG. 18 is a plan view of the third layer of the wiring PCB of FIG. 14, and FIG. 19 is a fourth layer of the wiring PCB of FIG. 14. This is the floor plan of the layer.

As shown in FIG. 14, the wiring PCB 280 is provided with first notches (n1) to twenty-fourth notches (n24) along the circumferential direction.

The first notches (n1) to the 24th notches (n24) are arranged to correspond to the 12 coil parts 240.

Both ends of the wires 2401 of the 12 coil parts 240 are accommodated in two notches 285, respectively.

Each end of the wire 2401 of the coil portion 240 accommodated in the first notch (n1) to the 24th notch (n24) is integrally joined by soldering to form a joint portion 291.

As a result, the occurrence of clearance due to vibration of the wires 2401 of the plurality of coil units 240 can be suppressed.

According to this configuration, cutting and/or damage caused by vibration of the wires 2401 of the plurality of coil units 240 can be suppressed.

Two notches 285 are disposed in each coil portion 240.

In this embodiment, 12 coil parts 240 are formed around the 12 split cores 210, and the 12 coil parts 240 are connected by the wiring PCB 280 as shown in FIG. 15. , 3 phases can be connected in parallel (Y connection).

The stator coil 230 includes a plurality of phase coils 245 each connected to each of the three phases (u-phase, v-phase, and w-phase).

The plurality of phase coils 245 include a u-phase coil 245u, a v-phase coil 245v, and a w-phase coil 245w.

The u-phase coil 245u, the v-phase coil 245v, and the w-phase coil 245w each have four coil units 240.

The u-phase coil 245u includes a 1st u-phase coil 245u1 and a 2u-phase coil 245u2 connected in parallel with each other.

The 1u phase coil 245u1 and the 2u phase coil 245u2 each include two coil parts 240 connected in series.

The v-phase coil 245v has a 1v-phase coil 245v1 and a 2v-phase coil 245v2 connected in parallel with each other.

The 1v phase coil 245v1 and the 2v phase coil 245v2 each include two coil units 240 connected in series.

The w-phase coil 245w includes a first w-phase coil 245w1 and a second w-phase coil 245w2 connected in parallel with each other.

The first w-phase coil 245w1 and the second w-phase coil 245w2 each include two coil parts 240 connected in series.

More specifically, in this embodiment, each end of the wire 2401 of the 1v phase coil 245v1 is accommodated in the first notch (n1) to the fourth notch (n4), respectively, and the fifth notch (n5) Each end of the wire 2401 of the 1u phase coil 245u1 is accommodated in the to 8th notches n8, respectively.

Each end of the wire 2401 of the 1w phase coil 245w1 is accommodated in the 9th notch (n9) to the 12th notch (n12), and the 2v wire is accommodated in the 13th notch (n13) to the 16th notch (n16). Each end of the wire 2401 of the upper coil 245v2 is respectively accommodated.

Each end of the wire 2401 of the 2u phase coil 245u2 is accommodated in the 17th notch (n17) to the 20th notch (n20), and the 2w notch is in the 21st notch (n21) to the 24th notch (n24). Each end of the wire 2401 of the upper coil 245w2 can be accommodated, respectively.

Meanwhile, the wiring PCB 280 is provided with a connection pattern 290 for connecting the 12 coil units 240 in three phases and two parallel.

The wiring PCB 280 includes a first layer (281L1), a second layer (281L2), a third layer (281L3), and a fourth layer (281L4) arranged in layers (see FIG. 2).

The first layer (281L1), the second layer (281L2), the third layer (281L3), and the fourth layer (281L4) are each provided with the connection pattern 290.

The connection pattern 290 provided in each of the first layer (281L1), the second layer (281L2), the third layer (281L3), and the fourth layer (281L4) is connected to the wire 2401 accommodated in the corresponding notch 285. Each end is electrically (conductively) connected to each other.

The surface of each layer (the first layer 281L1, the second layer 281L2, the third layer 281L3, and the fourth layer 281L4) is formed of, for example, an insulating member.

For example, the connection pattern 290 can conduct electricity to the surface of each layer (the first layer (281L1), the second layer (281L2), the third layer (281L3), and the fourth layer (281L4). It can be formed (printed) into a thin film of an electrical conductor. The connection patterns 290 are each configured to have a straight line shape and a circular or arc shape that are connected to each other so that electricity can be conducted.

The wiring PCB 280 is provided with a lead wire connection part 292 where one end of a three-phase alternating current phase power source (u-phase, v-phase, w-phase) is connected to the other end of a lead wire (not shown).

The lead wire connection part 292 includes a u-phase lead wire connection part 292u, a v-phase lead wire connection part 292v, and a w-phase lead wire connection part 292w.

The connection pattern 290 connects one end of the three phase coils 245 and the lead wire connection portion 292 at the same time as the power connection portion 293 and the other end of the three phase coils 245. It is composed of a neutral wire connection part 294.

The power connection part 293 includes a u-phase power connection part 293u connecting the u-phase coil 245u and the u-phase lead wire connection part 292u, the v-phase coil 245v and the v-phase lead wire connection part 292v. ) and a w-phase power connection unit 293w connecting the w-phase coil 245w and the w-phase lead wire connection unit 292w.

The connection pattern 290 includes a series connection portion 295 that connects the plurality of coil portions 240 in series.

The series connection part 295 includes a u-phase series connection part 295u, a v-phase series connection part 295v, and a w-phase series connection part 295w.

As shown in FIG. 16, the first layer 281L1 is provided with a u-phase lead wire connection portion 292u.

The first layer (281L1) is provided with a u-phase power connector (293u) that connects the u-phase lead wire connector (292u) and the 7th notch (n7) and the 17th notch (n17) in a conductive manner. As a result, the 1u-phase coil 245u1 of the 7th notch (n7) and the 2u-phase coil 245u2 of the 17th notch (n17) are connected in parallel to the u-phase power supply.

The first layer 281L1 is provided with a w-phase serial connection portion 295w that connects the w-phase coil portion 240w of the 22nd notch n22 and the w-phase coil portion 240w of the 24th notch n24 in series. .

As shown in FIG. 17, the second layer 281L2 is provided with a V-phase lead wire connection portion 292v.

The second layer (281L2) is provided with a v-phase lead wire connection portion (292v) and a v-phase power connection portion (293v) that connects the first notch (n1) and the 15th notch (n15) in a conductive manner. As a result, the 1v-phase coil portion 240v1 of the first notch n1 and the 2v-phase coil 245v2 of the 15th notch n15 are connected in parallel to the v-phase power supply.

The second layer (281L2) is provided with a v-phase serial connection portion (295v) that connects the v-phase coil (245v) of the second notch (n2) and the v-phase coil (245v) of the fourth notch (n4) in series. .

The second layer 281L2 is provided with a u-phase serial connection portion 295u that connects the u-phase coil portion 240 of the sixth notch (n6) and the u-phase coil portion 240 of the eighth notch (n8) in series. .

The second layer 281L2 is provided with a w-phase serial connection portion 295w that connects the w-phase coil portion 240w of the 10th notch n10 and the w-phase coil portion 240w of the 12th notch n12 in series. .

As shown in FIG. 18, the third layer 281L3 is provided with a w-phase lead wire connection portion 292w.

The third layer (281L3) is provided with a w-phase power connector (293w) that connects the w-phase lead wire connector (292w) and the 9th notch (n9) and the 23rd notch (n23) in a conductive manner. As a result, the 1st w-phase coil 245w1 of the 9th notch n9 and the 2w-phase coil 245w2 of the 23rd notch n23 are connected in parallel to the w-phase power supply.

The third layer 281L3 is provided with a w-phase serial connection portion 295w that connects the w-phase coil portion 240w of the 10th notch n10 and the w-phase coil portion 240w of the 12th notch n12 in series. .

The third layer 281L3 is provided with a v-phase serial connection portion 295v that connects the v-phase coil 245v of the 14th notch n14 and the v-phase coil 245v of the 16th notch n16 in series. .

The fourth layer 281L4 is provided with a u-phase serial connection part 295u that connects the u-phase coil part 240 of the 18th notch (n18) and the u-phase coil part 240 of the 20th notch (n20) in series. .

As shown in FIG. 19, the u-phase coil portion 240 (1st u-phase coil 245u1, 2u-phase coil 245u2), v-phase coil 245v (1st v-phase coil portion 240v1, 2v A neutral wire connection part 294 is provided for simultaneously connecting each end of the phase coil (245v2) and the w-phase coil part (240w) (1st w-phase coil (245w1), 2nd w-phase coil (245w2)) and making a connection (Y connection). do.

Specifically, the neutral wire connection portion 294 is connected to the end of the 1v phase coil portion 240v1 of the third notch n3, the end of the 1u phase coil 245u1 of the fifth notch n5, and the end of the 11th notch n11. ), the end of the 1v phase coil portion (240v1) of the 13th notch (n13), the end of the 2u phase coil (245u2) of the 19th notch (n19), the 21st notch ( The ends of the 2nd w phase coil (245w2) of n21) are connected (wired) to enable current conduction at the same time.

By this configuration, the 12 coil parts 240 of the stator coil 230 are connected to 4 u-phase coil parts 240, 4 v-phase coils 245v, and 4 w-phase coil parts 240w, Each end of the u-phase coil portion 240, v-phase coil 245v, and w-phase coil portion 240w is Y-connected by a neutral wire connection portion 294.

The four u-phase coil units 240 are connected in parallel to two 1st u-phase coils 245u1 and 2u-phase coils 245u2 by the u-phase power connection unit 293u. The 1st u-phase coil 245u1 and the 2u-phase coil 245u2 each include two coil parts 240 connected in series by the u-phase serial connection part 295u.

The v-phase coil 245v is connected in parallel to two 1v-phase coil parts 240v1 and 2v-phase coil 245v2 by the v-phase power connection part 293v. The 1v phase coil unit 240v1 and the 2v phase coil 245v2 each include two coil units 240 connected in series by the v phase serial connection unit 295v.

The w-phase coil portion (240w) is connected in parallel to two first w-phase coils (245w1) and two second w-phase coils (245w2) by the w-phase power connection portion (293w). The first w-phase coil 245w1 and the second w-phase coil 245w2 each include two coil parts 240 connected in series by the w-phase serial connection part 295w.

FIG. 20 is a diagram showing the inner plate support and guide pin of the motor according to another embodiment of the present invention, and FIG. 21 is a cross-sectional view of the inner plate support, the outer plate support, and the wiring PCB of the motor of FIG. 20 in a combined state. The motor of this embodiment includes a stator 200 and a rotor 100, as described above.

The stator 200 includes a stator core 209 having a plurality of split cores 210, and a stator coil 230 having a plurality of coil parts 240 each wound on the plurality of split cores 210. and a plurality of insulators 250 that insulate the plurality of split cores 210 and the plurality of coil units 240.

The stator 200 is coupled to one side of the plurality of insulators 250 along the axial direction, and both ends of the wires 2401 of the plurality of coil parts 240 are disposed to the outside so that they can be accommodated and joined. It has a plurality of open notches 285 and includes a ring-shaped wiring PCB 280 that connects the plurality of coil parts 240 to enable electricity to pass through them.

The plurality of insulators 250 include an outer support portion 261a that is contactable with the outer circumference of the wiring PCB 280 along the radial direction and protrudes from the plurality of coil portions 240 along the axial direction to form the wiring PCB 280. ), an inner plate support portion 262a supporting the inner plate surface 2801, and an outer plate support portion 263 that contacts the outer plate surface 2802 of the wiring PCB 280 and supports the wiring PCB 280, , the outer plate support portion 263 is formed to protrude inward from the outer circumferential support portion 261 along the radial direction.

As described above, the plurality of split cores 210 include an arc-shaped yoke 215, a tooth 217 protruding from the yoke 215 in the radial direction, and a tooth 217 protruding from the end of the tooth 217 in the circumferential direction. It is provided with shoes 219 protruding on both sides along the .

The plurality of insulators 250 include a yoke insulator 2501 that insulates the inner surface of the yoke 215 along the radial direction, a tooth insulator 2502 that insulates the peripheral surface of the tooth 217, and the shoe. It is provided with a shoe insulation portion 2503 that insulates the outer surface of 219.

The yoke insulation portion 2501 is provided with an external guide 25011 that protrudes to both sides (upper and lower sides) along the axial direction compared to the tooth insulation portion 2502.

The shoe insulating part 2503 has internal guides 25031 that protrude on both sides along the axial direction compared to the tooth insulating part 2502.

In this embodiment, the plurality of split cores 210, the plurality of coil units 240, and the plurality of insulators 250 are each implemented in 12 pieces.

As shown in FIG. 19, in this embodiment, the plurality of insulators 250 are connected to the wiring PCB 280 at one end of the yoke insulating part 2501 (the upper end of the external guide 25011 in the drawing). ) and an outer support portion 261a that protrudes in the axial direction so as to contact the outer circumference. The outer support portion 261a may be provided, for example, at the center of the insulator 250 along the circumferential direction.

On both sides of the outer support portion 261a along the circumferential direction, one end of the yoke insulating portion 2501 (the upper end of the external guide 25011 in the drawing) protrudes along the axial direction to form an inner side of the wiring PCB 280. Two inner plate support portions 262a are provided to support the plate surface 2801, respectively.

As a result, the wiring PCB 280, whose inner plate surface 2801 is supported by the two inner plate support portions 262a, has a central area supported by the two inner plate support portions 262a along the circumferential direction. When pressed toward the coil portion 240 along the axial direction, slight elastic deformation occurs toward the end of the yoke insulating portion 2501 (the upper end of the external guide 25011), as shown by the dotted line in FIG. 20. It can be possible.

Here, the elastic deformation refers to a deformation in which the wiring PCB 280 can be restored to its initial (before pressing) flat state when the pressing force is removed.

The two inner plate support portions 262a are arranged to be spaced apart from each other at a preset distance in clockwise and counterclockwise directions with respect to the outer circumferential support portion 261.

Each of the plurality of insulators 250 is provided with an expansion space portion 2504 that extends outward along the radial direction corresponding to each notch 285 of the wiring PCB 280.

The expansion space 2504 may be formed to extend along the axial direction.

At the end of the outer support portion 261a along the axial direction, an outer plate support portion 263 is provided that contacts the outer plate surface 2802 of the wiring PCB 280 and supports the wiring PCB 280.

The outer plate support portion 263 is formed to protrude inward from the outer circumferential support portion 261a along the radial direction. A guide inclined portion 2631 is provided on the outer surface of the outer plate support portion 263 to guide the wiring PCB 280 inward.

In this embodiment, the outer support portion 261a is formed to have an axial length such that the inner surface of the outer plate support portion 263 can contact the outer plate surface 2802 of the wiring PCB 280.

The outer support portion 261a is configured to have a third length L3 along the axial direction from one end of the yoke insulating portion 2501 (the upper end of the external guide 28011 in the drawing).

In this embodiment, the third length L3 extends from one end of the yoke insulating part 2501 (the upper end of the external guide 25011) to the inner plate support part 262, as shown in FIG. 20. It can be set as the length (H) to the end of , plus the thickness (t) of the wiring PCB 280 (L3=H+t).

In this embodiment, a guide pin 264a is provided inside the outer circumferential support portion 261a on which the outer plate support portion 263 is formed along the radial direction.

A guide pin hole 287 is formed through the wiring PCB 280 to accommodate the guide pin 264a.

According to this configuration, when the wiring PCB 280 is to be combined with the outer support portion 261a, the inner plate support portion 262a, and the outer plate support portion 263, the wiring PCB 280 is connected along the axial direction. It is placed on one side (upper side in the drawing) of the outer plate support portion 263. The rotation position of the guide pin hole 287 of the wiring PCB 280 is adjusted to correspond to the corresponding guide pin (264a), and the wiring is connected so that the corresponding guide pin (264a) can be inserted into the inside of the guide pin hole 287. Pressurize the PCB (280).

At this time, the outer edge (outer periphery) of the wiring PCB 280 is in contact with the guide inclined portion 2631 of the outer plate support portion 263, and is relatively slidably moved along the guide inclined portion 2631. When pressurized by the wiring PCB 280, the outer support portion 261a is elastically deformed outward along the radial direction, and when the wiring PCB 280 passes through the guide inclined portion 2631, it is returned to its initial position by its own elastic force. is returned to

When the wiring PCB 280 is pressed to pass through the outer plate support portion 263, when the inner plate surface 2801 of the wiring PCB 280 is contacted by the two inner plate support portions 262a, the wiring The movement of the PCB 280 is stopped, and the pressure area between the two inner plate support portions 262a along the circumferential direction is elastically deformed in a direction approaching the coil portion 240.

At this time, since the wiring PCB 280 has passed through the guide inclined portion 2631 of the outer plate support portion 263, the outer support portion 261a returns to its initial position by its own elastic force.

Here, the pressing area between the two inner plate supports 262 is elastically deformed toward the coil portion 240, so that the outer plate surface 2802 of the wiring PCB 280 is the inner surface of the outer plate support portion 263. Because it is in a lowered state, the outer plate support portion 263 can be easily and quickly returned to its initial position without coming into contact with the wiring PCB 280 or causing excessive interference.

As a result, the wiring PCB 280 can be quickly and easily coupled to the outer plate support portion 263 and the outer peripheral support portion 261a.

Figure 21 is a cross-sectional view of the connection area of the outer support part, the outer plate support part, and the wiring PCB of the motor according to another embodiment of the present invention, and Figure 22 is a bottom view of the recessed portion and the slope area of the wiring PCB of Figure 21. 23 is a plan view of the recessed and inclined portions of the wiring PCB of FIG. 21.

The motor of this embodiment includes a stator 200 and a rotor 100, as described above.

The stator 200 includes a stator core 209 having a plurality of split cores 210, and a stator coil 230 having a plurality of coil parts 240 each wound on the plurality of split cores 210. and a plurality of insulators 250 that insulate the plurality of split cores 210 and the plurality of coil units 240.

The stator 200 is coupled to one side of the plurality of insulators 250 along the axial direction, and both ends of the wires 2401 of the plurality of coil parts 240 are disposed to the outside so that they can be accommodated and joined. It has a plurality of open notches 285 and includes a ring-shaped wiring PCB 280a that connects the plurality of coil parts 240 to enable electricity to pass through them.

The plurality of insulators 250 include an outer support portion 261 that is contactable with the outer circumference of the wiring PCB 280a along the radial direction and protrudes from the plurality of coil portions 240 along the axial direction to form the wiring PCB 280a. ), an inner plate support portion 262 supporting the inner plate surface 2801, and an outer plate support portion 263 that contacts the outer plate surface 2802 of the wiring PCB 280a and supports the wiring PCB 280a, , the outer plate support portion 263 is formed to protrude inward from the outer circumferential support portion 261 along the radial direction.

As described above, the plurality of split cores 210 include an arc-shaped yoke 215, a tooth 217 protruding from the yoke 215 in the radial direction, and a tooth 217 protruding from the end of the tooth 217 in the circumferential direction. It is provided with shoes 219 protruding on both sides along the .

The plurality of insulators 250 include a yoke insulator 2501 that insulates the inner surface of the yoke 215 along the radial direction, a tooth insulator 2502 that insulates the peripheral surface of the tooth 217, and the shoe. It is provided with a shoe insulation portion 2503 that insulates the outer surface of 219.

The yoke insulation portion 2501 is provided with an external guide 25011 that protrudes to both sides (upper and lower sides) along the axial direction compared to the tooth insulation portion 2502.

The shoe insulating part 2503 has internal guides 25031 that protrude on both sides along the axial direction compared to the tooth insulating part 2502.

In this embodiment, the plurality of split cores 210, the plurality of coil units 240, and the plurality of insulators 250 are each implemented in 12 pieces.

The plurality of insulators 250 include an outer support portion 261 that is contactable with the outer circumference of the wiring PCB 280a along the radial direction and protrudes from the plurality of coil portions 240 along the axial direction to form the wiring PCB 280a. ), an inner plate support portion 262 supporting the inner plate surface 2801, and an outer plate support portion 263 that contacts the outer plate surface 2802 of the wiring PCB 280a and supports the wiring PCB 280a, , the outer plate support portion 263 is formed to protrude inward from the outer circumferential support portion 261 along the radial direction.

The inner plate support portion 262 is formed on all 12 insulators 250.

The outer plate support portion 263 may be formed in some of the 12 insulators 250.

The outer plate support portion 263 may be formed in 2, 3, 4, or 6 of the 12 insulators 250.

The outer peripheral support portion 261 may be formed to protrude from the outer plate support portion 263 along the axial direction.

Guide pins 264 are provided on the radial inner side of the outer circumferential support portion 261 where the outer plate support portion 263 is formed.

Guide pin holes 287 are formed through the wiring PCB 280a to accommodate the guide pins 264, respectively.

A guide inclined portion 2631 is provided on the outer surface of the outer plate support portion 263 to guide the wiring PCB 280a inward.

Meanwhile, as shown in FIG. 21, in this embodiment, the wiring PCB 280a is provided with a recessed portion 297 that is recessed inward from the outer circumference to allow the outer plate support portion 263 to pass.

As a result, when the wiring PCB 280a and the outer plate support portion 263 are coupled, the elastic displacement of the outer support portion 261, which contacts the edge of the wiring PCB 280a and is elastically deformed outward, can be reduced. there is.

That is, the guide inclined portion 2631 of the outer plate support 263 actually contacts a portion whose size is reduced along the radial direction by the depression 297, so that the outer plate support 263 is moved along the radial direction. The amount of outward elastic deformation can be reduced accordingly.

According to this configuration, the pressing force of the wiring PCB 280a for elastic deformation of the outer support portion 261 is reduced, so that the coupling of the wiring PCB 280a and the outer plate support portion 263 can be facilitated.

As shown in FIG. 22, the recessed portion 297 includes a recessed bottom portion 2971 that is recessed along the radial direction and both side wall portions 2972 disposed in the radial direction on both sides of the recessed bottom portion 2971. It is comprised of:

The distance between the two side wall portions 2972 may be slightly larger than the width of the outer plate support portion 263 in the circumferential direction, allowing for an assembly tolerance.

As a result, unnecessary interference between the outer plate support portion 263 and the recessed portion 297 can be suppressed.

Meanwhile, in this embodiment, the wiring PCB 280a is provided with an inclined portion 29711 inclined inward with respect to the axial direction so as to contact the guide inclined portion 2631 of the outer plate support portion 263.

The inclined portion 29711 is formed to be inclined inward toward the coil portion 240 along the axial direction.

The inclined portion 29711 has a first end 29711a disposed close to the coil portion 240 along the axial direction and an end spaced apart from the first end 29711a with respect to the coil portion 240. It has two ends (29711b).

As shown in FIG. 23, the first end 29711a is disposed inside the second end 29711b along the radial direction.

Referring again to FIG. 21, the second end 29711b may be disposed inside the inner end of the outer plate support portion 263 along the radial direction.

Accordingly, when the wiring PCB 280a and the outer plate support portion 263 are combined, the end of the guide inclined portion 2631 of the outer plate support portion 263 connects the wiring PCB 280a to the coil portion 240. In a state where no pressure is applied, the inclined portion 29711 may be contacted.

As a result, the connection of the wiring PCB 280a can be made easier.

The first end 29711a may be disposed outside the inner end of the outer plate support portion 263 along the radial direction.

Accordingly, after coupling the wiring PCB 280a, the inner surface of the outer plate support portion 263 is in contact with the outer plate surface 2802 of the wiring PCB 280a, so that the wiring PCB 280a moves along the axial direction. Deviation in a direction away from the coil unit 240 can be suppressed.

In the above, specific embodiments of the present invention have been shown and described. However, since the present invention can be implemented in various forms without departing from its spirit or essential characteristics, the embodiments described above should not be limited by the specific details for carrying out the invention.

In addition, even if the embodiments are not individually listed in the detailed description described above, they should be interpreted broadly within the scope of the technical idea defined in the attached claims. In addition, all changes and modifications included within the technical scope of the above claims and their equivalents shall be encompassed by the attached claims.

100: rotor
110: rotation axis
120: rotor core
1201: Electrical steel sheet
1202: Rotating shaft hole
200: Stater
205: Fixed ring
209: Stater Core
210: Split core
212: Electrical steel sheet
215: York
217: This
218: slot
219: Shu
230: Stator coil
240: Coil unit
2401: wire
245: Upper coil
250: insulator
250a: first insulator
250b: second insulator
2501: York insulation part
25011: External guide
2502: Teeth insulation part
2503: Shoe insulation part
25031: Internal guide
2504: Expanded space unit
260, 2601, 2602, 2603: PCB Support Branch
261,261a: Outsourcing support department
262,262a: Inner plate support
263: Outer plate support portion
2631: Guide inclined unit
264: Guide pin
280, 280a: Final PCB
2801: medial plate surface
2802: Outer plate surface
281: substrate
2811: inner diameter
2812: Apocrypha
285: notch
290: Connection pattern
292: Lead wire connection
293: Power line connection part
294: Neutral wire connection
295: Series connection part

Claims (19)

stator and rotor;
The stator is,
a plurality of split cores combined in an annular shape to accommodate the rotor therein;
A stator coil having a plurality of coil parts each wound around the plurality of split cores;
a plurality of insulators insulating the plurality of split cores and the plurality of coil units; and
It is coupled to one side of the plurality of insulators along the axial direction, and has a plurality of notches open outward so that both ends of the wires of the plurality of coil parts can be respectively received and joined, and the plurality of coil parts are coupled to one side of the plurality of insulators. It is provided with a circular connection PCB that is connected to enable current conduction,
The plurality of insulators,
an outer support portion contactable with the outer circumference of the wiring PCB along the radial direction;
an inner plate support portion that protrudes from the plurality of coil portions along the axial direction and supports the inner plate surface of the wiring PCB; and
an outer plate support portion that contacts the outer plate surface of the wiring PCB and supports the wiring PCB;
The outer plate support portion is formed to protrude inward from the outer peripheral support portion along a radial direction,
The plurality of insulators are provided with guide pins protruding in the axial direction,
A motor including a guide pin hole formed through the wiring PCB to accommodate the guide pin. delete According to paragraph 1,
The guide pins are formed to be respectively disposed inside the outer circumferential support portion along the radial direction. According to paragraph 3,
The guide pin is a motor that protrudes along the axial direction from the inner plate support portion. According to paragraph 1,
The inner plate support portion is formed on the inside of a point spaced apart from the outer plate support portion on both sides in the circumferential direction, respectively,
The guide pin is a motor formed between the inner plate support portions. According to paragraph 1,
The final PCB ratio is:
A substrate having a ring shape and having a plurality of notches on its outer circumference spaced apart from each other in a circumferential direction; and
A motor comprising: a joint formed by joining the plurality of notches and the ends of the wire to enable electricity to pass through them. stator and rotor;
The stator is,
a plurality of split cores combined in an annular shape to accommodate the rotor therein;
A stator coil having a plurality of coil parts each wound around the plurality of split cores;
a plurality of insulators insulating the plurality of split cores and the plurality of coil units; and
It is coupled to one side of the plurality of insulators along the axial direction, and has a plurality of notches open outward so that both ends of the wires of the plurality of coil parts can be respectively received and joined, and the plurality of coil parts are coupled to one side of the plurality of insulators. It is provided with a circular connection PCB that is connected to enable current conduction,
The plurality of insulators,
an outer support portion contactable with the outer circumference of the wiring PCB along the radial direction;
an inner plate support portion that protrudes from the plurality of coil portions along the axial direction and supports the inner plate surface of the wiring PCB; and
an outer plate support portion that contacts the outer plate surface of the wiring PCB and supports the wiring PCB;
The outer plate support portion is formed to protrude inward from the outer peripheral support portion along a radial direction,
A motor having a guide inclined portion inclined with respect to the axial direction on the outer surface of the outer plate support portion. In clause 7,
A motor wherein the wiring PCB is provided with an inclined portion inclined with respect to the axial direction so as to contact the guide inclined portion. According to clause 8,
A depression is formed in the wiring PCB inward from the outer periphery of the wiring PCB to allow the outer plate support portion to pass,
The recessed portion includes a recessed bottom portion that is recessed along a radial direction and both side wall portions formed in the radial direction on both sides of the recessed bottom portion,
The inclined portion is a motor formed in the recessed bottom portion. According to paragraph 1,
The stator coil has three phase coils to which each phase power of three-phase alternating current is connected,
A motor wherein the wiring PCB is provided with a connection pattern for connecting the plurality of coil units to enable electricity to be formed, respectively, so that the three phase coils can be formed. According to clause 10,
The plurality of coil units consists of 12 coil units,
Each of the three phase coils has parallel coils connected in parallel with each other,
The plurality of notches are motors having first to twenty-fourth notches so that both ends of the wires of the twelve coil parts can be accommodated, respectively. According to clause 11,
The wiring PCB includes a first layer, a second layer, a third layer, and a fourth layer that are insulated and stacked in layers,
A motor in which the first layer, second layer, third layer, and fourth layer are each provided with the connection pattern. stator and rotor;
The stator is,
a plurality of split cores combined in an annular shape to accommodate the rotor therein;
A stator coil having a plurality of coil parts each wound around the plurality of split cores;
a plurality of insulators insulating the plurality of split cores and the plurality of coil units; and
It is coupled to one side of the plurality of insulators along the axial direction, and has a plurality of notches open outward so that both ends of the wires of the plurality of coil parts can be respectively received and joined, and the plurality of coil parts are coupled to one side of the plurality of insulators. It is provided with a circular connection PCB that is connected to enable current conduction,
The plurality of insulators,
an outer support portion contactable with the outer circumference of the wiring PCB along the radial direction;
an inner plate support portion that protrudes from the plurality of coil portions along the axial direction and supports the inner plate surface of the wiring PCB; and
an outer plate support portion that contacts the outer plate surface of the wiring PCB and supports the wiring PCB;
The outer plate support portion is formed to protrude inward from the outer peripheral support portion along a radial direction,
The stator coil has three phase coils to which each phase power of three-phase alternating current is connected,
The wiring PCB is provided with a connection pattern for electrically connecting the plurality of coil units so that each of the three phase coils can be formed,
The plurality of coil units consists of 12 coil units,
Each of the three phase coils has parallel coils connected in parallel with each other,
The plurality of notches have first to twenty-fourth notches so that both ends of the wires of the twelve coil parts can be accommodated, respectively,
The wiring PCB includes a first layer, a second layer, a third layer, and a fourth layer that are insulated and stacked in layers,
The first layer, second layer, third layer, and fourth layer are each provided with the connection pattern,
The wiring PCB is provided with a lead wire connection portion to which lead wires connecting the three phase coils and the three phase alternating current power supply are connected, respectively,
The connection pattern includes a power connection part connecting one end of the three phase coils and the lead wire connection part; and
A motor provided with a neutral wire connection part that simultaneously connects the other ends of the three phase coils. According to clause 13,
The three phase coils include a u-phase coil, a v-phase coil, and a w-phase coil,
The lead wire connection portion is formed to be capable of conducting electricity to the first layer, second layer, and third layer,
The first layer is provided with a u-phase power connection connecting the u-phase coil and the lead wire connection,
The second layer is provided with a v-phase power connection connecting the v-phase coil and the lead wire connection,
The third layer is provided with a w-phase power connection connecting the w-phase coil and the lead wire connection,
A motor in which the neutral wire connection part is provided in the fourth layer. According to clause 14,
A motor in which the first layer, the second layer, and the third layer are each provided with a series connection part for connecting the plurality of coil parts in series. According to paragraph 1,
A motor in which 2, 3, 4, or 6 outer plate support portions are provided at equal angular intervals along the circumferential direction. According to paragraph 1,
A motor having a ring shape and further comprising a fixing ring coupled to an outer surface of the plurality of split cores in surface contact. According to paragraph 1,
A motor wherein the plurality of insulators are provided with an expansion space portion extending outwardly along a radial direction corresponding to the plurality of notches. According to any one of claims 1 and 3 to 18,
The rotor is,
A rotor core formed by insulating and stacking a plurality of annular electrical steel sheets; and
A motor including a plurality of permanent magnets coupled to the outer surface of the rotor core.

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