CN114678983A

CN114678983A - Motor and rotor

Info

Publication number: CN114678983A
Application number: CN202011439682.8A
Authority: CN
Inventors: 陈善南
Original assignee: Grenergy Opto Inc
Current assignee: Grenergy Opto Inc
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2022-06-28

Abstract

The invention discloses a motor and a rotor. The rotor comprises a carrying seat, a plurality of iron cores, a plurality of permanent magnetic pieces and two cover plates. The carrier seat is made of non-magnetic material. The carrier seat has two setting surfaces. The plurality of iron cores are arranged on the carrier seat. An accommodating space is formed between any two adjacent iron cores. Two sides of each iron core respectively protrude towards the accommodating space to form a bulge part. Each core has two end faces. Each iron core is integrally formed with a first mating portion on at least one end surface. The permanent magnetic pieces are respectively arranged in the accommodating space, and each permanent magnetic piece can be blocked by a bulge part to limit movement. The two cover plates are respectively arranged on the two setting surfaces. The two cover plates are provided with a plurality of second matching parts. The second matching parts can match with the first matching parts to fix the iron cores. Therefore, the rotor can effectively reduce the manufacturing cost.

Description

Motor and rotor

Technical Field

The present invention relates to a motor and a rotor, and more particularly, to a motor and a rotor capable of reducing manufacturing costs.

Background

The existing rotor comprises a setting seat arranged on a rotating shaft, a plurality of iron cores formed by a plurality of silicon steel sheets and a plurality of limiting rods. Every the iron core can run through there is a fixed orifices, and is a plurality of the gag lever post passes through a plurality ofly respectively the iron core the perforation makes every the both ends of gag lever post can with set up the seat tight fit to it is fixed a plurality of the iron core.

However, when each iron core is manufactured (drilled) with the fixing hole, the silicon steel sheets are easily collapsed and deformed, so that the fixing hole is not a circular hole, and a gap exists when the limiting rod is installed in the fixing hole, and the gap further affects magnetic flux.

Furthermore, if the fixing hole of each iron core is a circular hole, a precisely machined limiting rod must be matched, so as to ensure that no gap exists between the fixing hole and the limiting rod, but the manufacturing cost is further greatly increased. The present inventors have considered that the above-mentioned drawbacks can be improved, and as a result, they have conducted intensive studies and applied scientific principles, and finally have come up with the present invention which is designed reasonably and effectively to improve the above-mentioned drawbacks.

Disclosure of Invention

The present invention provides a motor and a rotor, which are designed to overcome the disadvantages of the prior art.

The embodiment of the invention discloses a motor, which comprises: a rotating shaft having an axial direction and a radial direction; a rotor, fix in the pivot, the rotor contains: the load seat is composed of a non-magnetic conductive material, and two ends of the load seat along the axial direction are respectively provided with a setting surface; the plurality of iron cores are integrally formed and are arranged on the carrier seat in an encircling manner, the plurality of iron cores are arranged at intervals, an accommodating space is formed between any two adjacent iron cores, two sides of each iron core respectively protrude towards the two adjacent accommodating spaces to form a protruding part, each iron core is provided with two end faces along the axial direction, and at least one end face of each iron core is provided with a first matching part; the permanent magnetic pieces are respectively arranged in the accommodating space, and each permanent magnetic piece can be blocked by the two corresponding bulge parts to limit the radial movement of the permanent magnetic piece; the two cover plates are respectively arranged on the two arrangement surfaces and are provided with a plurality of second matching parts which can match with the first matching parts to fix the iron cores; and a stator disposed at the periphery of the rotor.

Preferably, each of the iron cores has one of the first engaging portions on each of the two end surfaces.

Preferably, two of the first engaging portions of each of the cores are convex structures, and the plurality of second engaging portions of the two cover plates are through holes for engaging with any one of the first engaging portions.

Preferably, two of the cover plates are defined as a first cover plate and a second cover plate, the second fitting portions of the first cover plate are through holes, and the second fitting portions of the second cover plate are convex structures protruding toward the cores; in each of the cores, the first engaging portion on one of the end surfaces has a convex structure and is capable of engaging with the plurality of second engaging portions of the first cover plate, and the first engaging portion on the other of the end surfaces has a concave structure and is capable of engaging with the plurality of second engaging portions of the second cover plate.

Preferably, the two first engaging portions of each of the cores are concave structures, and the plurality of second engaging portions of the two cover plates are convex structures that engage with any one of the first engaging portions.

Preferably, two sides of the carrier seat along the axial direction are respectively provided with a plurality of first fixing holes, two of the cover plates are respectively provided with a plurality of second fixing holes corresponding to the plurality of first fixing holes, the rotor further comprises a plurality of fixing members, and each fixing member can pass through the second fixing hole and the first fixing hole to fix the two cover plates on the carrier seat.

The embodiment of the present invention also discloses a rotor, configured to be disposed on a rotating shaft, where the rotating shaft has an axial direction and a radial direction, and the rotor includes: the load seat is composed of a non-magnetic conductive material, and two ends of the load seat along the axial direction are respectively provided with a setting surface; the plurality of iron cores are integrally formed and are arranged on the carrier seat in an encircling manner, the plurality of iron cores are arranged at intervals, an accommodating space is formed between any two adjacent iron cores, two sides of each iron core respectively protrude towards the two adjacent accommodating spaces to form a protruding part, each iron core is provided with two end faces along the axial direction, and at least one end face of each iron core is provided with a first matching part; the permanent magnetic pieces are respectively arranged in the accommodating space, and each permanent magnetic piece can be blocked by the two corresponding bulge parts to limit the radial movement of the permanent magnetic piece; and the two cover plates are respectively arranged on the two arrangement surfaces, the two cover plates are provided with a plurality of second matching parts, and the second matching parts can be matched with the first matching parts to fix the iron cores.

Preferably, each of the iron cores has one of the first engaging portions on both end surfaces thereof; two of every iron core first cooperation portion is convex structure, two a plurality of the second cooperation portion of apron is for cooperating any one the perforation of first cooperation portion.

Preferably, each of the iron cores has one of the first engaging portions on both end surfaces thereof; the two cover plates are defined as a first cover plate and a second cover plate, a plurality of second matching parts of the first cover plate are through holes, and a plurality of second matching parts of the second cover plate are convex structures protruding towards the plurality of iron cores; in each of the cores, the first engaging portion on one of the end surfaces is of a convex structure and is capable of engaging with the plurality of second engaging portions of the first cover plate, and the first engaging portion on the other end surface is of a concave structure and is capable of engaging with the plurality of second engaging portions of the second cover plate.

In summary, the motor and the rotor according to the embodiments of the present invention can secure the plurality of iron cores without generating an unexpected gap and can effectively reduce the manufacturing cost by using the design that "the plurality of iron cores are integrally formed" and "the plurality of second engaging portions of the two cover plates can engage with the plurality of first engaging portions of the plurality of iron cores" to fix the plurality of iron cores.

For a better understanding of the nature and technical content of the present invention, reference should be made to the following detailed description of the invention and the accompanying drawings, which are provided for illustration purposes only and are not intended to limit the scope of the invention in any way.

Drawings

Fig. 1 is a perspective view of a motor according to a first embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view taken along line II-II of FIG. 1.

FIG. 3 is a schematic cross-sectional view of the III-III section line of FIG. 1.

Fig. 4 is an exploded view of the motor according to the first embodiment of the present invention.

Fig. 5 is an exploded view of a rotor according to a first embodiment of the present invention.

Fig. 6 is a perspective view of a core according to a first embodiment of the present invention.

Fig. 7 is an enlarged schematic view of region VII of fig. 3.

Fig. 8 is an enlarged schematic view of a region VIII of fig. 2.

Fig. 9 is a partial sectional view schematically showing a motor according to a second embodiment of the present invention.

Fig. 10 is a partial sectional view schematically showing a motor according to a third embodiment of the present invention.

Fig. 11 is a partial sectional view schematically showing a motor according to a fourth embodiment of the present invention.

Detailed Description

The embodiments of the present invention disclosed herein are described below with reference to specific embodiments, and those skilled in the art will understand the advantages and effects of the present invention from the disclosure of the present specification. The invention is capable of other and different embodiments and its several details are capable of modification and various other changes, which can be made in various details within the specification and without departing from the spirit and scope of the invention. The drawings of the present invention are for illustrative purposes only and are not intended to be drawn to scale. The following embodiments will further explain the related art of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention.

It will be understood that, although the terms "first," "second," "third," etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are used primarily to distinguish one element from another element or from one signal to another signal. In addition, the term "or" as used herein should be taken to include any one or combination of more of the associated listed items as the case may be. Furthermore, the term "electrically coupled", as used herein, refers to one of "indirectly electrically connected" and "directly electrically connected".

[ first embodiment ]

Referring to fig. 1 to 8, the present embodiment provides a motor 100. Referring first to fig. 1 and 4, the motor 100 includes a rotating shaft 1, a rotor 2, and a stator 3. The rotor 2 set up in on the pivot 1, rotor 2 can with pivot 1 synchronous revolution, the stator 3 set up in the periphery of rotor 2, rotor 2 can for stator 3 rotates.

It should be noted that, although the rotating shaft 1, the rotor 2 and the stator 3 are collectively defined as the motor 100 in the present embodiment, the present invention is not limited thereto. For example, the rotor 2 may be used alone (e.g., sold) or with other components. The construction of each component of the motor 100 will be described separately, and the connection relationship between each component of the motor 100 will be described in due course.

As shown in fig. 2, the rotating shaft 1 is a cylindrical structure and made of a non-magnetic material (e.g., aluminum alloy, stainless steel, or reinforced plastic), and the rotating shaft 1 has an axial direction D1 and a radial direction D2 perpendicular to the axial direction D1. In other words, the axial direction D1 is a direction in which the rotating shaft 1 extends along the length, and the radial direction D2 is a direction extending from the center of the rotating shaft 1 to the outside and perpendicular to the axial direction D1.

As shown in fig. 1 and 4, the rotor 2 is sleeved on the rotating shaft 1 in this embodiment, so that the rotor 2 and the rotating shaft 1 can rotate synchronously. The way of sleeving the rotor 2 on the rotating shaft 1 has many practical ways, for example, the rotating shaft 1 and the rotor 2 may be fixed by a limiting block, or fixed by welding or gluing, but the way of sleeving the rotor 2 on the rotating shaft 1 is not essential, and therefore, the detailed description is not repeated here.

Referring to fig. 2 and 4 to 5, the rotor 2 includes a carrier base 21, a plurality of iron cores 22 disposed on the carrier base 21, a plurality of permanent magnets 23 disposed between the iron cores 22, two cover plates 24 disposed on the carrier base 21, and a plurality of fixing members 25 for fixing the two cover plates 24. The details of the rotor 2 and its connections will be described in detail below.

The carrier 21 is a ring structure in this embodiment and is made of a non-magnetic material. The outer edge of the holder 21 has a plurality of long grooves 211 arranged along the axial direction D1, and the long grooves 211 are arranged at intervals. In addition, two ends of the mount 21 along the axial direction D1 respectively have a mounting surface 212, and the two mounting surfaces 212 are respectively annular. In addition, the holder 21 has a plurality of first fixing holes 213 on two sides (i.e., two mounting surfaces 212) along the axial direction D1.

Referring to fig. 5 to 7, a plurality of the iron cores 22 are manufactured by a Powder metallurgy (Powder metallurgy) process in this embodiment, that is, each iron core 22 is a single integral component. In other words, any non-integrally formed core (e.g., a core composed of a plurality of silicon steel sheets) is not the core 22 of the present invention.

The plurality of iron cores 22 are annularly disposed on the carrier 21 and are spaced from each other, and an accommodation space SP is formed between any two adjacent iron cores 22. Each of the cores 22 has an opposite setting end 221 and a limiting end 222, each of the cores 22 has a rib 223 at the setting end 221 for engaging the corresponding elongated slot 211, and when the rib 223 of each of the cores 22 is disposed in the corresponding elongated slot 211 of the carrier seat 21, the cores 22 are disposed in a radial configuration and any two adjacent cores 22 do not contact each other (as shown in fig. 3 and 7).

In addition, the end surface of each of the cores 22 at the position-limiting ends 222 is arc-shaped, so that an imaginary connecting line L of the position-limiting ends 222 is circular (as shown in fig. 7), and the imaginary connecting line L and the rotating shaft 1 have a common center. Each of the iron cores 22 has a protrusion 226 protruding toward two adjacent receiving spaces SP on two sides of the limiting end 222 (i.e. two sides facing two adjacent limiting ends 222), each protrusion 226 is disposed along the imaginary connecting line L in the present embodiment, and any two adjacent protrusions 226 are spaced from each other without contacting each other.

Further, referring to fig. 6 and 8 again, each of the cores 22 has two end surfaces 224 along the axial direction D1, each of the cores 22 has a first matching portion 225 on each of the two end surfaces 224, and the first matching portions 225 are in a circular convex structure integrally formed by the corresponding core 22 in the present embodiment, but the present invention is not limited to the embodiment. For example, the first fitting portions 225 may also be a square convex structure. In addition, in each of the iron cores 22, the distance between the two end surfaces 224 (i.e. the length along the axial direction D1) is substantially the same as the length of the carrier 21 along the axial direction D1 in the present embodiment, but the invention is not limited to the embodiment.

It is worth mentioning that the design that the plurality of iron cores 22 (including the first matching portion 225) are integrally formed by a powder metallurgy process can provide the following advantages for each iron core 22: the first fitting portion 225 of each of the cores 22 is directly and integrally formed, so that each of the first fitting portions 225 has a low error. And when each iron core 22 directly has the first matching portion, the manufacturing steps of "punching holes of the iron core" and "punching holes of the limiting rod through the iron core" required by the conventional rotor can be omitted, and the tolerance caused by punching holes and the selection of the limiting rod subjected to precision machining can be further avoided naturally, so that each iron core 22 not only avoids generating unexpected gaps to ensure magnetic flux, but also can improve the manufacturing efficiency of a plurality of iron cores 22 and reduce the manufacturing cost.

Referring to fig. 2, 5 and 7 again, the permanent magnets 23 are permanent magnets and are respectively disposed in the accommodating spaces SP. Specifically, each permanent magnet piece 23 is a rectangular cylinder in the present embodiment, and the length of each permanent magnet piece 23 along the axial direction D1 is substantially the same as the length of any one of the iron cores 22 along the axial direction D1. That is, only one permanent magnet 23 is disposed in each accommodating space SP, and the permanent magnet 23 is stopped by the protruding portion 226 of two adjacent iron cores 22 to limit the movement in the radial direction D2, but the present invention is not limited to the embodiment. For example, two permanent magnet pieces 23 may be disposed in each accommodating space SP, that is, the sum of the lengths of any two permanent magnet pieces 23 along the axial direction D1 is substantially equal to the length of the accommodating space SP (or any one of the iron cores 22).

Referring to fig. 2 and 5, the two cover plates 24 are respectively a single component made of a non-magnetic material (e.g., aluminum alloy, stainless steel, or reinforced plastic) and are disposed on the two mounting surfaces 212 of the susceptor 21. In the present embodiment, the two cover plates 24 cover the carrier 12, the permanent magnets 23, and the iron cores 22, and the two cover plates 24 can limit the movement of the iron cores 22 and the permanent magnets 23 along the axial direction D1.

Further, as shown in fig. 2 and fig. 8, each of the two cover plates 24 has a plurality of second matching portions 241, and the second matching portions 241 are through holes in the present embodiment, and the second matching portions 241 (through holes) can match with the first matching portions 225 (convex structures) to fix the plurality of cores 22, that is, the two cover plates are fixed in a tight fit manner.

In addition, each of the two cover plates 24 has a plurality of second fixing holes 242 corresponding to the plurality of first fixing holes 213. Each of the fixing members 25 can fix the two cover plates 24 to the carrier 21 through the second fixing holes 242 and the first fixing holes 213.

It should be noted that the two cover plates 24 are respectively a single component, so when the two cover plates 24 are used to make (drill) the second matching portions 241, the situation of collapse deformation is not easy to occur, and the error of each second matching portion 241 is greatly reduced, wherein the collapse deformation is that the hole presents an unexpected shape.

It should be noted that each of the iron cores 22 has two first matching portions 225 in the present embodiment, and the two first matching portions 225 are mutually assembled with the plurality of second matching portions 241 of the two cover plates 24. However, in other embodiments not shown in the present invention, each of the iron cores may also have only one end surface 224 with the first matching portion 225, and the end surface 224 without the first matching portion 225 is fixed to the end cover 24 by welding or adhesive.

[ second embodiment ]

As shown in fig. 9, which is another embodiment of the present invention, the present embodiment is similar to the motor 100 of the above embodiment, and the same points of the two embodiments are not repeated, but the difference of the present embodiment compared to the first embodiment of the motor 100 mainly lies in:

in each of the cores 22 of the present embodiment, two of the end surfaces are further defined as a first end surface 224A and a second end surface 224B, the first end surface 224A has the first engaging portion 225, and the second end surface 224B does not have the first engaging portion 225, that is, at least one of the end surfaces of each of the cores 22 has the first engaging portion 225. Any two of the cores 22 are connected to each other at their second end faces 224B by magnetic conductive paste, thereby forming one of the cores 22 similar to the first embodiment. In other words, two iron cores 22 are disposed on any one of the long slots 211 of the carrier 21, and the two iron cores 22 respectively have the first engaging portion 225 on the sides away from each other, so as to be assembled with the plurality of second engaging portions 241 of the two cover plates 24.

[ third embodiment ]

As shown in fig. 10, which is another embodiment of the present invention, the present embodiment is similar to the motor 100 of the above embodiment, and the same points of the two embodiments are not repeated, but the difference of the present embodiment compared to the first embodiment of the motor 100 mainly lies in:

in the two cover plates 24 of the present embodiment, the two cover plates 24 are respectively defined as a first cover plate 24A and a second cover plate 24B, the second engaging portions 241 of the first cover plate 24A are through holes, and the second engaging portions 241 of the second cover plate 24B are convex structures protruding toward the cores 22.

In each of the iron cores 22 of the present embodiment, the first matching portion 225 on one of the end surfaces 224 is of a convex structure and can be assembled with the plurality of second matching portions 241 of the first cover plate 24A, and the first matching portion 225 on the other end surface 224 is of a concave structure and can be assembled with the plurality of second matching portions 241 of the second cover plate 24B.

In other embodiments, when the end surface 224 on the same side of the plurality of iron cores 22 is viewed, the plurality of first engaging portions 225 may be alternatively disposed in a protruding manner, a recessed manner, a protruding manner, …, a recessed manner, and the like, and the plurality of second engaging portions 241 of the two cover plates 24 are adjusted to be a through hole or a protruding manner according to the structure of the corresponding first engaging portion 225.

[ fourth embodiment ]

As shown in fig. 11, which is another embodiment of the present invention, the present embodiment is similar to the motor 100 of the above embodiment, and the same points of the two embodiments are not repeated, but the difference of the present embodiment compared to the first embodiment of the motor 100 mainly lies in:

the two first engaging portions 225 of each of the cores 22 are concave structures in the present embodiment, the plurality of second engaging portions 241 of the two cover plates 24 are convex structures protruding toward the cores 22 in the present embodiment, and the plurality of second engaging portions 241 and the plurality of first engaging portions 225 can be mutually assembled.

[ technical effects of embodiments of the present invention ]

In summary, the motor 100 and the rotor 2 according to the embodiments of the present invention can fix the plurality of cores 22 by "the plurality of cores 22 are integrally formed" and "the plurality of second engaging portions 241 of the two cover plates 24 can engage with the plurality of first engaging portions 225 of the plurality of cores 22", so that the motor 100 and the rotor 2 according to the present invention can not only ensure that the cores do not generate unexpected gaps, but also effectively reduce the manufacturing cost.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, which is defined by the appended claims.

Claims

1. A motor, characterized in that the motor comprises:

a rotating shaft having an axial direction and a radial direction;

a rotor, fix in the pivot, the rotor contains:

the load seat is composed of a non-magnetic conductive material, and two ends of the load seat along the axial direction are respectively provided with a setting surface;

the plurality of iron cores are integrally formed and are arranged on the carrier seat in a surrounding mode, the plurality of iron cores are arranged at intervals, an accommodating space is formed between any two adjacent iron cores, two sides of each iron core respectively protrude towards the two adjacent accommodating spaces to form a protruding part, each iron core is provided with two end faces along the axial direction, and each iron core is provided with a first matching part on at least one end face;

the permanent magnetic pieces are respectively arranged in the accommodating space, and each permanent magnetic piece can be blocked by the corresponding two bulging parts to limit the permanent magnetic pieces to move in the radial direction; and

the two cover plates are respectively arranged on the two arrangement surfaces and are provided with a plurality of second matching parts which can be matched with the first matching parts to fix the iron cores; and

and the stator is arranged on the periphery of the rotor.

2. The motor of claim 1, wherein each of said iron cores has one of said first engaging portions on both of said end surfaces.

3. The motor according to claim 2, wherein the two first engaging portions of each of the cores are convex-shaped, and the plurality of second engaging portions of the two cover plates are through holes for engaging any one of the first engaging portions.

4. The motor as claimed in claim 2, wherein two of the cover plates are defined as a first cover plate and a second cover plate, the second engaging portions of the first cover plate are through holes, and the second engaging portions of the second cover plate are convex structures raised toward the cores; in each of the cores, the first fitting portion on one of the end surfaces is of a convex structure and is capable of fitting the plurality of second fitting portions of the first cover, and the first fitting portion on the other of the end surfaces is of a concave structure and is capable of fitting the plurality of second fitting portions of the second cover.

5. The motor according to claim 2, wherein the two first engaging portions of each of the cores are of a concave configuration, and the plurality of second engaging portions of the two cover plates are of a convex configuration for engaging any one of the first engaging portions.

6. The motor as claimed in claim 1, wherein the carrier has a plurality of first fixing holes at two sides along the axial direction, the two cover plates have a plurality of second fixing holes corresponding to the first fixing holes, and the rotor further comprises a plurality of fixing members, each of the fixing members is capable of fixing the two cover plates to the carrier through the second fixing hole and the first fixing hole.

7. A rotor for mounting on a rotating shaft, the rotating shaft having an axial direction and a radial direction, the rotor comprising:

the two cover plates are arranged on the two arrangement surfaces respectively and are provided with a plurality of second matching portions which can be matched with the first matching portions in a plurality of fixed iron cores.

8. The rotor according to claim 7, wherein each of the iron cores has one of the first engaging portions on both of the end faces; two of every iron core first cooperation portion is convex structure, two a plurality of the second cooperation portion of apron is for cooperating any one the perforation of first cooperation portion.

9. The rotor according to claim 7, wherein each of the iron cores has one of the first engaging portions on both of the end faces; the two cover plates are defined as a first cover plate and a second cover plate, a plurality of second matching parts of the first cover plate are through holes, and a plurality of second matching parts of the second cover plate are convex structures protruding towards the plurality of iron cores; in each of the cores, the first fitting portion on one of the end surfaces is of a convex structure and is capable of fitting the plurality of second fitting portions of the first cover, and the first fitting portion on the other of the end surfaces is of a concave structure and is capable of fitting the plurality of second fitting portions of the second cover.

10. The rotor as claimed in claim 7, wherein the carrier has a plurality of first fixing holes at two sides along the axial direction, two of the cover plates have a plurality of second fixing holes corresponding to the plurality of first fixing holes, and the rotor further comprises a plurality of fixing members, each of the fixing members is capable of fixing two of the cover plates to the carrier through the second fixing hole and the first fixing hole.