CN221427655U - Circuit breaker assembly - Google Patents

Abstract

Embodiments of the present disclosure provide a circuit breaker assembly. The breaker assembly comprises a handle assembly, a switch-on mechanism and a switch-off mechanism, wherein the handle assembly comprises an upper cover, a rotating handle arranged on the upper cover and an actuating piece arranged in the upper cover, the actuating piece is connected with the rotating handle and can rotate along with the rotating handle to switch between a switch-on position and a switch-off position, and a protruding part is arranged on the outer side of the actuating piece; the circuit breaker body comprises a shell and a moving contact assembly arranged in the shell; and a locking assembly including a moving member provided in the upper cover and a rotating member provided outside the upper cover, the rotating member being connected to the moving contact assembly and capable of rotating following the moving contact assembly, wherein in a case where the actuating member is in the closing position, the rotating member supports the moving member so that the moving member is in a rotating path of the projection, and in a process where the actuating member is switched from the closing position to the opening position, the rotating member rotates following the moving contact assembly so that the moving member moves out of the rotating path in a direction away from the rotating handle.

Description

Circuit breaker assembly

Technical Field

Embodiments of the present disclosure relate generally to the field of electrical equipment technology, and more particularly, to a circuit breaker assembly.

Background

In the working process of the circuit breaker, the condition that the contact is welded due to the fact that short-circuit current passes through the contact can exist, and therefore the movable contact and the fixed contact cannot be normally opened.

However, even if the movable and static contacts cannot be opened, the handle can still move to a position close to the opening position under a large external force, so that an operator can obtain an error indication that the movable and static contacts are separated according to the position of the handle, and the subsequent operation causes potential safety hazards to a human body.

Disclosure of utility model

It is an object of the present disclosure to provide a circuit breaker assembly to at least partially solve the above-mentioned problems.

In a first aspect of the present disclosure, a circuit breaker assembly comprises: the handle assembly comprises an upper cover, a rotating handle arranged on the upper cover and an actuating piece arranged in the upper cover, wherein the actuating piece is connected with the rotating handle and can rotate along with the rotating handle so as to switch between a closing position and a separating position, and a protruding part is arranged on the outer side of the actuating piece; the circuit breaker body comprises a shell and a moving contact assembly arranged in the shell; and a locking assembly including a moving member provided in the upper cover and a rotating member provided outside the upper cover, the rotating member being connected to the moving contact assembly and capable of rotating following the moving contact assembly, wherein in a case where the actuating member is in the closing position, the rotating member supports the moving member so that the moving member is in a rotating path of the protruding portion, and in a process where the actuating member is switched from the closing position to the opening position, the rotating member rotates following the moving contact assembly so that the moving member moves outside the rotating path in a direction away from the rotating handle.

According to an embodiment of the present disclosure, with the actuator in the closing position, the rotating member supports the moving member and brings the moving member into a rotational path of the protruding portion. In the normal brake separating process, the rotating piece rotates along with the moving contact assembly, so that the moving piece moves away from the rotating handle and moves out of the rotating path, the moving piece cannot interfere with the rotation of the actuating piece, and the handle assembly can rotate until the brake separating position, so that the normal brake separating is realized. Under the condition that the movable contact and the fixed contact cannot be opened due to fusion welding, even if the handle assembly is rotated under larger external force, the movable contact and the fixed contact cannot be opened, namely, the movable contact assembly does not move, so that the moving piece cannot move away from the rotary handle. In this case, the moving member is still located in the rotation path of the protruding portion to interfere with the rotation of the actuating member, so that the handle assembly cannot continue to rotate towards the opening position, thereby avoiding erroneous indication and finally avoiding potential safety hazard.

In some embodiments, the actuator further comprises an actuator disc connected to the rotary handle such that the actuator can rotate with the rotary handle, the protrusion being provided on an outer side of the actuator disc.

In some embodiments, the rotating member includes a supporting portion and a mating portion passing through the housing and connected with the moving contact assembly, wherein the supporting portion supports the moving member when the actuating member is in the closing position, and the mating portion follows the moving contact assembly to rotate and the supporting portion moves away from the rotating handle during switching of the actuating member from the closing position to the opening position.

In some embodiments, the rotating member further includes a torsion spring and a main body portion provided with the supporting portion and the mating portion, the upper cover is provided with a fixing column outside, the torsion spring is sleeved on an outer side surface of the fixing column, and the main body portion is provided on the outer side surface of the torsion spring and connected with the upper cover, wherein the torsion spring is twisted and deformed along a circumferential direction of the fixing column in a case that the actuating member is at the closing position.

In some embodiments, the housing is further provided with an arc hole, the mating portion passes through the arc hole and is connected with the moving contact assembly, and the mating portion can rotate in the arc hole.

In some embodiments, the moving contact assembly includes a moving contact and a moving contact feedback connected to the moving contact, the moving contact feedback overlapping a portion of the mating portion passing through the arcuate aperture.

In some embodiments, the moving member includes a moving lever and a restoring member connected to the moving lever, wherein the supporting portion supports the moving lever and causes the restoring member to be compressed with the actuating member in the closing position, and the moving lever is in the rotational path.

In some embodiments, an end of the protrusion facing away from the actuation disc is provided with a first inclined surface, an end of the moving rod adjacent to the rotary handle is provided with a second inclined surface cooperating with the first inclined surface, and the second inclined surface faces the rotary handle.

In some embodiments, a moving groove is provided in the upper cover, and a protruding member is provided in the moving groove, the moving lever includes a first moving portion, a second moving portion spaced apart from the first moving portion, and a third moving portion between the first moving portion and the second moving portion, the first moving portion is located at one side of the protruding member, the second moving portion is located at the opposite side of the protruding member, and the restoring member is disposed between the second moving portion and the protruding member.

In some embodiments, the upper cover wraps around a portion of the housing adjacent the rotating handle, and an outer side surface of the housing covers the moving groove and is spaced apart from a groove bottom of the moving groove to enable the moving bar to move along the moving groove.

It should be understood that what is described in this section is not intended to limit the key features or essential features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.

Drawings

The above and other features, advantages and aspects of embodiments of the present disclosure will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, wherein like or similar reference numerals denote like or similar elements, in which:

fig. 1 illustrates an exploded view of a circuit breaker assembly according to some embodiments of the present disclosure;

FIG. 2 illustrates an exploded view of a handle assembly and a locking assembly according to some embodiments of the present disclosure;

fig. 3 illustrates an exploded view of a circuit breaker body according to some embodiments of the present disclosure;

fig. 4 illustrates a schematic structural view of a circuit breaker assembly according to some embodiments of the present disclosure, wherein the actuator is in a closed position;

Fig. 5 illustrates a schematic structural view of a circuit breaker assembly according to some embodiments of the present disclosure, wherein the actuator is in a tripped position;

Fig. 6 illustrates a schematic structural view of a circuit breaker assembly in which moving and stationary contacts are welded according to some embodiments of the present disclosure;

FIG. 7 illustrates a schematic structural view of a handle assembly according to some embodiments of the present disclosure;

FIG. 8 is a schematic diagram showing the feedback structure of the rotor and the moving contact shown in FIG. 3;

FIG. 9 illustrates a schematic diagram of a structure of a travel bar according to some embodiments of the present disclosure;

FIG. 10 illustrates a schematic structural view of an actuator according to some embodiments of the present disclosure;

Fig. 11 illustrates a schematic structural view of a travel bar and an actuator according to some embodiments of the present disclosure.

Reference numerals illustrate:

100 is a circuit breaker assembly;

1 is a handle assembly, 11 is an upper cover, 111 is a connecting hole, 112 is a moving groove, 113 is a protruding piece, 114 is a fixed column, 12 is a rotary handle, 13 is an actuating piece, 131 is an actuating disc, 132 is a protruding part, 133 is a first inclined surface, and 14 is a mounting piece;

2 is a breaker body, 21 is a shell, 211 is an arc hole, 22 is a moving contact assembly, 221 is a moving contact, 222 is a moving contact feedback, and 23 is a fixed contact;

3, 31, 311, 3111, 3112, 3113, 3114 is a second inclined surface, 312 is a return member, 32 is a rotation member, 321 is a main body portion, 322 is a supporting portion, 323 is a fitting portion, and 324 is a torsion spring.

Detailed Description

Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present disclosure are illustrated in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The term "comprising" and variations thereof as used herein means open ended, i.e., "including but not limited to. The term "or" means "and/or" unless specifically stated otherwise. The term "based on" means "based at least in part on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment. The term "another embodiment" means "at least one additional embodiment". The terms "first," "second," and the like, may refer to different or the same object.

As described hereinabove, in the operation of the circuit breaker, there may be a case where a short-circuit current passes through the contacts to cause the contacts to be welded, in which case the moving and stationary contacts cannot be normally opened. Even if the movable contact and the static contact cannot be opened, the handle can still move to the limit position under larger external force, and in some cases, the limit position can be relatively close to the brake-separating position, so that according to the fact that the handle is positioned at the limit position, an operator can obtain an error indication that the movable contact and the static contact are separated, and the subsequent operation causes potential safety hazards to a human body.

Embodiments of the present disclosure provide a circuit breaker assembly 100 to at least partially solve the above-described technical problems. Hereinafter, the principles of the present disclosure will be described with reference to fig. 1 to 11.

Fig. 1 illustrates an exploded view of a circuit breaker assembly 100 according to some embodiments of the present disclosure. Fig. 2 illustrates an exploded view of the handle assembly 1 and the locking assembly 3 according to some embodiments of the present disclosure. Fig. 3 illustrates an exploded view of the circuit breaker body 2 according to some embodiments of the present disclosure. As shown in fig. 1-3, the circuit breaker assembly 100 described herein generally includes a handle assembly 1, a circuit breaker body 2, and a locking assembly 3. The handle assembly 1 is connected to the circuit breaker body 2, and more specifically, the handle assembly 1 is connected to a moving contact assembly 22 within the circuit breaker body 2. In the case that the moving contact and the fixed contact are not welded, the rotating handle assembly 1 can drive the moving contact 221 to rotate, so that the moving contact and the fixed contact are separated or connected.

With continued reference to fig. 1-2, in some embodiments, the handle assembly 1 includes an upper cover 11, a twist grip 12, an actuator 13, and a mount 14. The outer side of the actuator 13 is provided with a protrusion 132. A rotary handle 12 is provided on the upper cover 11. An actuator 13 is provided within the upper cover 11. The upper cover 11 is further provided with a coupling hole 111, and the actuating member 13 can pass through the coupling hole 111 and be coupled with the rotary handle 12. Obviously, since the actuator 13 is connected to the rotary handle 12, in the case of operating the rotary handle 12, the actuator 13 can be rotated following the rotary handle 12 to switch the actuator 13 between the closing position and the opening position. The position of the actuating member 13 and the rotary handle 12 should be kept identical, in other words, in case the rotary handle 12 is in the closing position, the actuating member 13 is also in the closing position and the handle assembly 1 is in the closing position. While with the rotary handle 12 in the open position, the actuator 13 is also in the open position and the handle assembly 1 is in the open position.

With continued reference to fig. 2, the actuating member 13 is coupled to the rotary handle 12 by a mounting member 14. The mount 14 according to embodiments of the present disclosure may be any type of mount 14 currently known or available in the future, as embodiments of the present disclosure are not limited in this regard. For example, in some embodiments, the mounting member 14 may be a mounting bolt.

In some embodiments, the actuator 13 further comprises an actuator disc 131. The protrusion 132 is provided on the outer side surface of the actuating disc 131. The actuating disc 131 is connected to the rotary handle 12 by means of the mounting member 14 so that the actuating member 13 is connected to the rotary handle 12.

With continued reference to fig. 3, in some embodiments, the circuit breaker body 2 includes a housing 21, a moving contact assembly 22, and a stationary contact 23. The movable contact assembly 22 and the stationary contact 23 are respectively disposed inside the housing 21. The moving contact assembly 22 may include a moving contact 221 and a moving contact feedback 222, and the moving contact 221 and the moving contact feedback 222 are fixedly connected, so that the moving contact 221 and the moving contact feedback 222 can move synchronously. The stationary contact 23 is separated from the moving contact 221 in the case where the handle assembly 1 is in the opening position, and the stationary contact 23 is connected to the moving contact 221 in the case where the handle assembly 1 is in the closing position.

In some embodiments, the rotator 32 is disposed outside the upper cover 11. The rotating member 32 can pass through the housing 21 of the circuit breaker body 2, and one end of the rotating member 32 passing through the housing 21 can be connected to the moving contact assembly 22, so that the rotating member 32 can follow the moving contact assembly 22. The moving member 31 is provided in the upper cover 11, and the moving member 31 is movable in the upper cover 11 in a direction away from the rotary handle 12 or in a direction toward the rotary handle 12.

Fig. 4 illustrates a schematic structural view of a circuit breaker assembly 100 according to some embodiments of the present disclosure, wherein the actuator 13 is in a closed position. Fig. 5 illustrates a schematic structural view of a circuit breaker assembly 100 according to some embodiments of the present disclosure, wherein the actuator 13 is in a breaking position. Fig. 6 illustrates a schematic structural diagram of a circuit breaker assembly 100 in which moving and stationary contacts are welded, according to some embodiments of the present disclosure.

As shown in fig. 2 and 4, with the actuator 13 in the closing position, the rotating member 32 supports the moving member 31 such that the moving member 31 is in the rotating path of the protruding portion 132. As shown in fig. 2 and 5, the rotating member 32 is capable of following the rotation of the movable contact assembly 22 during the switching of the actuating member 13 from the closing position to the opening position, so that the moving member 31 is moved out of the rotation path in a direction away from the rotary handle 12. Obviously, with the actuator 13 in the closed position, a sufficient distance should be maintained between the projection 132 and the moving member 31.

With the above-described configuration, with continued reference to fig. 2 to 4, with the actuator 13 in the closing position, the rotating member 32 supports the moving member 31 and brings the moving member 31 into the rotational path of the projection 132. With continued reference to fig. 2-5, during normal opening, the rotating member 32 rotates counterclockwise following the moving contact assembly 22, the moving member 31 moves away from the rotating handle 12, and the moving member 31 moves downward beyond the rotation path, so that the moving member 31 does not interfere with the rotation of the actuating member 13, and the handle assembly 1 can rotate until the opening position, thereby realizing normal opening. Referring to fig. 2 to 6, in the case that the movable and stationary contacts cannot be opened due to welding, even if the handle assembly 1 is rotated under a large external force, the moving member 31 does not move away from the rotary handle 12 because the movable and stationary contacts cannot be opened, i.e., because the movable contact assembly 22 does not move. In this case, the moving member 31 is still in the rotation path of the protruding portion 132 to interfere with the rotation of the actuating member 13, so that the handle assembly 1 cannot continue to rotate toward the opening position, thereby avoiding erroneous indication and eventually avoiding causing a safety hazard.

Fig. 7 illustrates a schematic structural view of a handle assembly 1 according to some embodiments of the present disclosure. As shown in fig. 7, specifically, a moving groove 112 may be provided in the upper cover 11, and the mover 31 may be movable away from the rotary handle 12 and toward the rotary handle 12 in the moving groove 112. The moving member 31 includes a moving lever 311 and a restoring member 312. The reset member 312 is connected to the moving lever 311.

As shown in fig. 2, 4 and 7, with the actuator 13 in the closing position, the rotating member 32 supports the moving lever 311, and the restoring member 312 is compressed. The moving lever 311 moves up to a certain position, and the moving lever 311 is in the rotational path of the projection 132. As shown in connection with fig. 2, 5 and 7, the rotating member 32 follows the moving contact assembly 22 to rotate counterclockwise during normal opening. Since the moving lever 311 is not supported by the rotating member 32, the returning member 312 gradually returns to its original state, and the moving lever 311 moves away from the rotary handle 12 under the urging force of the returning member 312. With the actuator 13 in a position intermediate the closing position and the opening position, the moving lever 311 moves out of the rotational path of the projection 132, so that the moving lever 311 does not interfere with the rotation of the actuator 13, and the handle assembly 1 can be rotated up to the opening position, thereby achieving normal opening. As shown in fig. 2, 6 and 7, in the case that the moving and static contacts cannot be opened due to fusion welding, even if the handle assembly 1 is rotated under a large external force, the moving and static contacts cannot be opened, that is, the moving contact assembly 22 does not move, so that the reset piece 312 is still in a compressed state, and the moving rod 311 does not move away from the rotating handle 12. In this case, the moving lever 311 is still in the rotational path of the projection 132 to interfere with the rotation of the actuator 13, so that the handle assembly 1 cannot continue to rotate toward the opening position.

The reset element 312 according to embodiments of the present disclosure may be any of a variety of types of reset elements 312 currently known or available in the future, as embodiments of the present disclosure are not limited in this regard. For example, in some embodiments, the return member 312 may be a spring.

With continued reference to fig. 7, in some embodiments, the moving bar 311 includes a first moving portion 3111, a second moving portion 3112, and a third moving portion 3113. The first moving part 3111, the second moving part 3112, and the third moving part 3113 are each movable within the movement slot 112. The first moving part 3111 is closer to the rotary handle 12 than the second moving part 3112, and the first moving part 3111 is spaced apart from the second moving part 3112. The third moving part 3113 is provided between the first moving part 3111 and the second moving part 3112. A protruding piece 113 is provided in the moving groove 112, and the protruding piece 113 is located at one end of the moving groove 112 adjacent to the rotary handle 12. The first moving part 3111 is located at one side of the protruding piece 113, the second moving part 3112 is located at the opposite side of the protruding piece 113, and the reset piece 312 is disposed between the second moving part 3112 and the protruding piece 113. Obviously, with the actuator 13 in the closing position, the first moving portion 3111 can extend out of the moving slot 112, so that the first moving portion 3111 can be in the rotational path of the protruding portion 132, it being understood that if the first moving portion 3111 is also located in the moving slot 112, the first moving portion 3111 cannot interfere with the rotation of the protruding portion 132.

As shown in fig. 4 and 7, with the actuator 13 in the closing position, the rotating member 32 supports the moving lever 311, and the return member 312 is compressed. The first moving part 3111 protrudes out of the moving slot 112 and moves to a position above, and the first moving part 3111 is in the rotational path of the protruding part 132. Referring to fig. 5 and 7, during normal opening, the rotating member 32 follows the moving contact assembly 22 to rotate counterclockwise. Since the moving lever 311 is not supported by the rotating member 32, the returning member 312 gradually returns to its original state, and thus the first moving portion 3111 can be moved away from the rotary handle 12 and retracted into the moving slot 112. In a case where the actuator 13 is at a position intermediate to the closing position and the opening position, the first moving portion 3111 moves out of the rotational path of the protruding portion 132, and thus the first moving portion 3111 does not interfere with the rotation of the actuator 13, and the handle assembly 1 can be rotated up to the opening position, thereby achieving normal opening. In connection with fig. 5 and 8, in the case that the movable and stationary contacts cannot be opened due to welding, even if the handle assembly 1 is rotated under a large external force, the first moving part 3111 does not move away from the rotating handle 12 and the first moving part 3111 still protrudes out of the moving groove 112 because the movable and stationary contacts cannot be opened, i.e., because the movable contact assembly 22 does not move, the reset member 312 does not return to the original state. In this case, the first moving portion 3111 is still in the rotational path of the protruding portion 132 to interfere with the rotation of the actuator 13, so that the handle assembly 1 cannot continue to rotate toward the opening position.

Referring back to fig. 1-2, in some embodiments, the upper cover 11 may wrap around a portion of the housing 21 adjacent the rotary handle 12. The outer side of the housing 21 may cover the moving groove 112, and the outer side of the housing 21 is spaced apart from the groove bottom of the moving groove 112 to form a moving chamber, so that the moving rod 311 can move along the moving groove 112 and prevent the moving rod 311 from falling out of the moving groove 112.

With continued reference to fig. 2, in particular, the rotating member 32 is mounted outside the upper cover 11, and the rotating member 32 is also capable of being coupled to the moving contact assembly 22 through the housing 21. The rotating member 32 is mainly used for realizing a transmission function between the moving contact assembly 22 and the moving member 31.

With continued reference to fig. 2-3, in some embodiments, the rotator 32 includes a body portion 321, a support portion 322, a mating portion 323, and a torsion spring 324. The upper cover 11 is provided with the fixed column 114 outward, the torsion spring 324 is sleeved on the outer side surface of the fixed column 114, the main body 321 is arranged on the outer side surface of the torsion spring 324 and connected with the upper cover 11, for example, the main body 321 is pressed on the torsion spring 324, and the main body 321 is mounted on the fixed column 114 together with the torsion spring 324 through a tapping screw. The supporting portion 322 and the engaging portion 323 are provided on the outer side surface of the main body portion 321, and the supporting portion 322 and the engaging portion 323 can move together with the main body portion 321. The mating portion 323 can be connected with the moving contact assembly 22 through the housing 21.

As shown in fig. 4 and 7, with the actuator 13 in the closing position, the supporting portion 322 rotates to a position supporting the moving lever 311, and the return member 312 is compressed, and the torsion spring 324 is also twisted and deformed in the circumferential direction of the fixed column 114. The first moving part 3111 protrudes out of the moving groove 112 and moves to a position above, and the first moving part 3111 is in the rotational path of the protruding part 132. Referring to fig. 5 and 7, during normal opening, the movable contact assembly 22 rotates counterclockwise, the fitting portion 323 follows the movable contact assembly 22 to rotate counterclockwise under the restoring force of the torsion spring 324, and the supporting portion 322 moves away from the rotary handle 12. Since the moving lever 311 is not supported by the support portion 322, the return member 312 gradually returns to its original state, and thus the first moving portion 3111 moves away from the rotary handle 12 and retracts into the moving slot 112. In a case where the actuator 13 is at a position intermediate to the closing position and the opening position, the first moving portion 3111 moves out of the rotational path of the protruding portion 132, and thus the first moving portion 3111 does not interfere with the rotation of the actuator 13, and the handle assembly 1 can be rotated up to the opening position, thereby achieving normal opening. In connection with fig. 5 and 8, in case that the movable and stationary contacts cannot be opened due to welding, even if the handle assembly 1 is rotated under a large external force, since the movable and stationary contacts cannot be opened, that is, since the movable contact assembly 22 does not move, the fitting portion 323 does not move, the supporting portion 322 still supports the first moving portion 3111, so that the first moving portion 3111 does not move away from the rotary handle 12, and the first moving portion 3111 still protrudes out of the moving slot 112. In this case, the first moving portion 3111 is still in the rotational path of the protruding portion 132 to interfere with the rotation of the actuator 13, so that the handle assembly 1 cannot continue to rotate toward the opening position.

With continued reference to fig. 3, in some embodiments, the housing 21 is further provided with an arcuate aperture 211. The fitting portion 323 passes through the arc hole 211 and is connected with the movable contact assembly 22, and the fitting portion 323 can rotate within the arc hole 211. Fig. 8 shows a schematic structural diagram of the rotating member 32 and the moving contact feedback 222 shown in fig. 3. Referring to fig. 3 and 8, the moving contact feedback 222 is overlapped on the portion of the fitting portion 323 passing through the arc-shaped hole 211.

As can be seen, referring to fig. 4 and 8, in the case where the actuator 13 is switched from the opening position to the closing position, the actuator 13 drives the moving contact 221 and the moving contact feedback 222 to rotate clockwise. Since the engaging portion 323 is located at the lower end of the moving contact feedback 222, the moving contact feedback 222 can drive the engaging portion 323 and the supporting portion 322 to rotate, and the engaging portion 323 and the supporting portion 322 rotate along the axial direction of the fixed column 114. During the clockwise rotation, the torsion spring 324 is twisted and deformed in the circumferential direction of the fixed post 114. Referring to fig. 5 and 8, in the case where the actuator 13 is switched from the closing position to the opening position, the actuator 13 drives the moving contact 221 and the moving contact feedback 222 to rotate counterclockwise. In the case that the moving contact feedback 222 rotates counterclockwise, the rotating member 32 also rotates counterclockwise along with the moving contact feedback 222 under the torque of the torsion spring 324, and the fitting portion 323 is tightly fitted with the lower end of the moving contact feedback 222 by the torque of the torsion spring 324. Since the moving member 31 is not supported by the supporting portion 322, the moving member 31 moves downward by the restoring member 312 to avoid the protruding portion 132 from the moving member 31, so that the actuating member 13 can be rotated to a position up to the opening of the movable and stationary contacts.

Fig. 9 illustrates a schematic structural view of a moving bar 311 according to some embodiments of the present disclosure. Fig. 10 illustrates a schematic structural view of an actuator 13 according to some embodiments of the present disclosure. Fig. 11 illustrates a schematic structural view of a moving rod 311 and an actuator 13 according to some embodiments of the present disclosure. As shown in fig. 10, an end of the protrusion 132 facing away from the actuating disc 131 is provided with a first inclined surface 133. As shown in fig. 9, one end of the moving lever 311 adjacent to the rotary handle 12 is provided with a second inclined surface 3114 that mates with the first inclined surface 133; more specifically, the second inclined surface 3114 is located on the first moving portion 3111. As shown in fig. 11, the second inclined surface 3114 may face the rotary handle 12.

With continued reference to fig. 4, 5 and 11, in some embodiments, the width of the second inclined surface 3114 at an end of the first moving portion 3111 adjacent to the rotating member 32 is greater than the width of the second inclined surface 3114 at an end of the first moving portion 3111 facing away from the rotating member 32. So configured, referring to fig. 4, 5 and 11, during the process of switching the actuating member 13 from the opening position to the closing position, the first moving portion 3111 may still extend out of the moving slot 112, and if the moving and stationary contacts are still desired to be closed, the inclined surface features of the first inclined surface 133 and the second inclined surface 3114 may enable the actuating member 13 to press the moving member 31 downward, so that the actuating member 13 can rotate clockwise and the moving and stationary contacts are normally closed. Referring to fig. 9 and 11, in the case where the actuator 13 is switched from the closing position to the opening position, the first moving portion 3111 blocks the rotation of the protruding portion 132 even if the slope feature exists because the width of the second slope 3114 at the end of the first moving portion 3111 facing away from the rotating member 32 is small.

In summary, according to the circuit breaker assembly 100 of the embodiment of the disclosure, in the first aspect, in the case that the moving and static contacts cannot be opened due to fusion welding, even if the handle assembly 1 is rotated under a large external force, the moving member 31 still is located in the rotation path of the protruding portion 132 to interfere with the rotation of the actuating member 13, so that the handle assembly 1 cannot continue to rotate toward the opening position, thereby limiting the rotatable final position of the handle assembly 1, avoiding erroneous indication and finally avoiding causing potential safety hazards. In the second aspect, the locking assembly 3 is connected with the moving contact feedback 222, so that the locking assembly 3 is very sensitive to the movement of the moving contact 221, and the driving size chain of the locking assembly 3 is short, thereby easily controlling the rotatable angle of the rotating handle 12 after welding. In the third aspect, even if the force applied to the rotary handle 12 during welding is large, the strength of the circuit breaker assembly 100 can be secured by only reinforcing the structures of the moving member 31 and the protruding portion 132. Finally, the locking assembly 3 is located substantially outside the breaker body 2, and only the fitting portion 323 is located inside the breaker body 2 through the housing, thereby reducing the influence of the locking assembly 3 on the internal structure of the breaker body 2.

The locking assembly 3 according to the embodiment of the present disclosure may be applied to various circuit breakers to at least partially solve the above-described problems. It should be understood that the locking assembly 3 according to the embodiments of the present disclosure may also be applied to other electrical components, as well, embodiments of the present disclosure are not limited in this regard.

The foregoing description of the embodiments of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvement in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. A circuit breaker assembly (100), characterized in that the circuit breaker assembly (100) comprises:

The handle assembly (1) comprises an upper cover (11), a rotary handle (12) arranged on the upper cover (11) and an actuating piece (13) arranged in the upper cover (11), wherein the actuating piece (13) is connected with the rotary handle (12) and can rotate along with the rotary handle (12) to switch between a closing position and a separating position, and a protruding part (132) is arranged on the outer side of the actuating piece (13);

A circuit breaker body (2) comprising a housing (21) and a moving contact assembly (22) disposed within the housing (21); and

The locking assembly (3) comprises a moving part (31) arranged in the upper cover (11) and a rotating part (32) arranged outside the upper cover (11), wherein the rotating part (32) is connected to the moving contact assembly (22) and can rotate along with the moving contact assembly (22), the rotating part (32) supports the moving part (31) to enable the moving part (31) to be positioned in a rotating path of the protruding part (132) when the actuating part (13) is positioned at the closing position, and the rotating part (32) follows the moving contact assembly (22) to enable the moving part (31) to move out of the rotating path along a direction deviating from the rotating handle (12) in the process of switching the actuating part (13) from the closing position to the opening position.

2. The circuit breaker assembly (100) of claim 1 wherein said actuator (13) further comprises an actuator disc (131), said actuator disc (131) being coupled to said rotary handle (12) such that said actuator (13) is rotatable following said rotary handle (12), said protrusion (132) being disposed on an outer side of said actuator disc (131).

3. The circuit breaker assembly (100) of claim 2 wherein the rotary member (32) includes a support portion (322) and a mating portion (323) passing through the housing (21) and connected to the moving contact assembly (22), wherein with the actuating member (13) in the closed position, the support portion (322) supports the moving member (31), and during switching of the actuating member (13) from the closed position to the open position, the mating portion (323) follows the moving contact assembly (22) and the support portion (322) moves away from the rotary handle (12).

4. The circuit breaker assembly (100) of claim 3, wherein the rotating member (32) further comprises a torsion spring (324) and a main body portion (321) provided with the supporting portion (322) and the mating portion (323), the upper cover (11) is provided with a fixing post (114) outside, the torsion spring (324) is sleeved on an outer side surface of the fixing post (114), and the main body portion (321) is provided on an outer side surface of the torsion spring (324) and is connected with the upper cover (11), wherein the torsion spring (324) is twisted and deformed along a circumferential direction of the fixing post (114) when the actuating member (13) is in the closing position.

5. The circuit breaker assembly (100) of claim 3 wherein said housing (21) further defines an arcuate aperture (211), said mating portion (323) passing through said arcuate aperture (211) and being connected to said moving contact assembly (22), and wherein said mating portion (323) is rotatable within said arcuate aperture (211).

6. The circuit breaker assembly (100) of claim 5 wherein said moving contact assembly (22) includes a moving contact (221) and a moving contact feedback (222) connected to said moving contact (221), said moving contact feedback (222) overlapping a portion of said mating portion (323) passing through said arcuate aperture (211).

7. A circuit breaker assembly (100) according to claim 3, wherein the moving member (31) comprises a moving lever (311) and a return member (312) connected to the moving lever (311), wherein with the actuating member (13) in the closing position, the support (322) supports the moving lever (311) and causes the return member (312) to be compressed, and the moving lever (311) is in the rotational path.

8. The circuit breaker assembly (100) of claim 7 wherein an end of said projection (132) facing away from said actuating disc (131) is provided with a first inclined surface (133), an end of said moving rod (311) adjacent said rotary handle (12) is provided with a second inclined surface (3114) cooperating with said first inclined surface (133), and said second inclined surface (3114) is directed towards said rotary handle (12).

9. The circuit breaker assembly (100) of claim 7, wherein a moving slot (112) is provided in the upper cover (11), and a protruding member (113) is provided in the moving slot (112), the moving lever (311) includes a first moving portion (3111), a second moving portion (3112) spaced apart from the first moving portion (3111), and a third moving portion (3113) between the first moving portion (3111) and the second moving portion (3112), the first moving portion (3111) being located on one side of the protruding member (113), the second moving portion (3112) being located on the opposite side of the protruding member (113), and the reset member (312) being provided between the second moving portion (3112) and the protruding member (113).

10. The circuit breaker assembly (100) of claim 9 wherein said upper cover (11) wraps around a portion of said housing (21) adjacent said rotary handle (12) and an outer side of said housing (21) covers said moving slot (112) and is spaced from a bottom of said moving slot (112) to enable said moving rod (311) to move along said moving slot (112).