CN215527660U - Plug-in circuit breaker - Google Patents

Abstract

The utility model discloses an insertion type circuit breaker, which relates to the technical field of electrical equipment and comprises a circuit breaker body and an accessory spliced with the circuit breaker body, wherein a first lock catch and a first handle are arranged in the accessory, a second lock catch and a second handle are arranged in the circuit breaker body, a handle linkage hole and a lock catch linkage hole used for penetrating through a handle linkage shaft and a lock catch linkage shaft are arranged on the splicing surface of the circuit breaker body and the accessory, the second lock catch is connected with the first lock catch through a lock catch linkage shaft, the second handle is connected with the first handle through the handle linkage shaft, and a release in the accessory controls the first lock catch to release and drives the second lock catch to release according to signals. The plug-in circuit breaker provided by the utility model can expand the protection function of the plug-in circuit breaker.

Description

Plug-in circuit breaker

Technical Field

The utility model relates to the technical field of electrical equipment, in particular to a plug-in circuit breaker.

Background

The circuit breaker is a switching device capable of closing, bearing and breaking current under normal loop conditions, along with rapid development of electric power and communication technology in China, higher and higher requirements are provided for the practicability, safety and reliability of terminal electrical equipment such as the circuit breaker, the traditional circuit breaker can not meet the requirements far away, in continuous research and development, the circuit breaker not only reaches a new level in the aspects of miniaturization, intellectualization, reliability and the like, a plurality of brand new designs are structurally provided, if the circuit breaker can be conveniently plugged and unplugged like a common electric plug, the circuit breaker can be conveniently installed in or withdrawn from a circuit, the circuit breaker can be locked in a stable working state in an installation position, meanwhile, the circuit breaker can adapt to various requirements of intellectualization on power supply quality, automatic control and the like, and the circuit breaker is called as a plug-in circuit breaker.

The existing plug-in circuit breaker only has overload and short circuit protection, but lacks the functions of electric leakage, overvoltage and undervoltage protection, shunt tripping and the like, so that the protection function of the plug-in circuit breaker is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a plug-in circuit breaker, which can expand the protection function of the plug-in circuit breaker.

The embodiment of the utility model is realized by the following steps:

the utility model provides a plug-in circuit breaker, including circuit breaker body and the annex of splicing with the circuit breaker body, be provided with first hasp and first handle in the annex, this internal second hasp and the second handle of being provided with of circuit breaker body, the circuit breaker body splices the face with the annex and is provided with handle linkage hole and the hasp linkage hole that is used for passing handle universal driving shaft and hasp universal driving shaft, the second hasp passes through the hasp linkage shaft with first hasp and is connected, the second handle passes through the handle linkage shaft with first handle and is connected, the tripper in the annex is according to the first hasp dropout of signal control and drive second hasp dropout.

Optionally, as an implementable mode, a clamping hook is arranged on the splicing surface of the accessory, a clamping hook hole groove is correspondingly arranged on the splicing surface of the circuit breaker body, and the clamping hook penetrates through the clamping hook hole groove to enable the accessory to be clamped with the circuit breaker body.

Optionally, as an implementable mode, the hook is an elastic plastic hook, the hook includes a connecting portion perpendicular to the splicing surface and a clamping portion disposed at the other end of the connecting portion and perpendicular to the connecting portion, the clamping portion is clamped with the inner wall of the splicing surface of the circuit breaker body, and the clamping portion is provided with a leading-in angle.

Optionally, as an implementable mode, a cover hole is formed in the side wall of the circuit breaker body corresponding to the extending direction of the clamping portion, and the cover hole is provided with a cover.

Optionally, as an implementable manner, the cover is an elastic cover, and the elastic cover is pressed inwards to contact the clamping part.

Optionally, as an implementable mode, the hooks are distributed on the splicing surface, the splicing surface of the circuit breaker body is correspondingly provided with a plurality of hook hole grooves, and the hooks respectively penetrate through the corresponding hook hole grooves to enable the accessory to be clamped with the circuit breaker body.

Optionally, as an implementable mode, a first rivet hole is provided on the splicing surface of the accessory, a second rivet hole is correspondingly provided on the splicing surface of the circuit breaker body, and the first rivet hole and the second rivet hole are riveted through the same rivet, so that the accessory is assembled with the circuit breaker body.

Optionally, as an implementable mode, a guide boss is further arranged on the accessory splicing surface, a guide groove is correspondingly arranged on the breaker body splicing surface, and the guide boss is inserted into the guide groove to fix the positions of the accessory and the breaker body.

Optionally, as an implementable manner, a terminal is provided on an end surface of the accessory for externally connecting a signal line.

Optionally, the accessory may comprise one of an over-under voltage accessory, a shunt auxiliary contact accessory and a leakage accessory.

The embodiment of the utility model has the beneficial effects that:

the utility model provides an insertion type circuit breaker, which comprises a circuit breaker body and accessories spliced with the circuit breaker body, wherein different accessories can realize different protection functions, a first lock catch and a first handle are arranged in the accessories, a second lock catch and a second handle are arranged in the circuit breaker body, a handle linkage hole and a lock catch linkage hole which are used for penetrating through a handle linkage shaft and a lock catch linkage shaft are arranged on the splicing surface of the circuit breaker body and the accessories, the second lock catch is connected with the first lock catch through the lock catch linkage shaft, the second handle is connected with the first handle through the handle linkage shaft, the accessories and the circuit breaker body can be synchronously operated through connection, and a release in the accessories controls the first lock catch to release and drives the second lock catch to release according to signals, so that the protection function of the accessories is realized. The protection function of the plug-in circuit breaker can be expanded by splicing various accessories with different protection functions on the circuit breaker body.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic diagram of a splicing structure of a circuit breaker body and an accessory according to an embodiment of the utility model;

FIG. 2 is a schematic diagram of the internal structure of an attachment according to an embodiment of the present invention;

FIG. 3 is a schematic view of an accessory in a hook connection according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a circuit breaker body during hook connection according to an embodiment of the present invention;

FIG. 5 is an enlarged view of the hook and the hook hole slot in the embodiment of the present invention;

FIG. 6 is a schematic view of an attachment for a riveted connection according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a circuit breaker body in the riveting connection according to the embodiment of the utility model.

Icon: 110-an accessory; 111-a first latch; 112-a first handle; 113-a hook; 1131-engaging part; 114 — first rivet hole; 117-third rivet hole; 115-a guide boss; 116-a connection terminal; 120-a circuit breaker body; 123-hook hole groove; 124-cover hole; 1241-sealing cover; 125-second rivet hole; 126-a guide groove; 127-fourth rivet hole; 131-a handle linkage shaft; 132-a locking linkage shaft; 133-handle linkage hole; 134-locking interlocking hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "vertical", "horizontal", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally placed when the products of the present invention are used, and are only used for convenience of description and simplification of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and in a manner that would be apparent to those of ordinary skill in the art and in a specific context to which such terms are intended.

The plug-in circuit breaker can be conveniently plugged and unplugged like a common electrical plug, the circuit breaker can be conveniently installed in or withdrawn from a circuit, and the advantage that the plug-in circuit breaker can be locked in a stable working state in an installation position is paid more attention. However, the existing plug-in circuit breaker only has overload and short-circuit protection, but lacks the functions of leakage, overvoltage and undervoltage protection, shunt auxiliary contacts and the like.

The embodiment of the utility model provides an insertion type circuit breaker, as shown in fig. 1 and fig. 2, the insertion type circuit breaker comprises a circuit breaker body 120 and an accessory 110 spliced with the circuit breaker body 120, a first lock catch 111 and a first handle 112 are arranged in the accessory 110, a second lock catch and a second handle are arranged in the circuit breaker body 120, a handle linkage hole 133 and a lock catch linkage hole 134 are arranged on the splicing surface of the circuit breaker body 120 and the accessory 110 and used for penetrating through a handle linkage shaft 131 and a lock catch linkage shaft 132, the second lock catch is connected with the first lock catch 111 through the lock catch linkage shaft 132, the second handle is connected with the first handle 112 through the handle linkage shaft 131, and a release in the accessory 110 controls the first lock catch 111 to release and drives the second lock catch to release according to a signal.

The tripper in the accessory 110 controls the first lock catch 111 to trip according to the signal, the first lock catch 111 is connected with the second lock catch through the lock catch linkage shaft 132, when the first lock catch 111 trips, the second lock catch trips, and in the circuit breaker body 120, the second lock catch trips to drive the circuit breaker body 120 to open, so that the protection function of the accessory 110 is realized. It should be noted that, because the accessory 110 implements each protection function differently, the internal structure of the accessory 110 is configured differently, and a protection function can be implemented for the determined structure of the accessory 110. When a certain protection function is required in a scene of using the circuit breaker, the accessory 110 capable of realizing the protection function can be spliced on the circuit breaker body 120 to expand the protection function of the circuit breaker.

The plug-in circuit breaker provided by the utility model comprises a circuit breaker body 120 and accessories 110 spliced with the circuit breaker body 120, wherein different accessories 110 can realize different protection functions, the accessories 110 and the circuit breaker body 120 can be operated in a linkage manner due to the connection of the accessories 110 and the circuit breaker body 120, and a release in the accessories 110 controls the first lock catch 111 to release and drives the second lock catch to release according to signals, so that the protection function of the accessories 110 is realized. The protection function of the plug-in circuit breaker can be extended by splicing various accessories 110 having different protection functions to the circuit breaker body 120.

Optionally, as shown in fig. 3 and 4, a clamping hook 113 is disposed on the splicing surface of the accessory 110, a clamping hook hole slot 123 is correspondingly disposed on the splicing surface of the circuit breaker body 120, the clamping hook 113 penetrates through the clamping hook hole slot 123 to clamp the accessory 110 and the circuit breaker body 120, and the clamping hook 113 is an elastic plastic clamping hook 113.

When the circuit breaker body 120 needs to add some additional function, the accessory 110 is spliced with the circuit breaker body 120, the hook 113 is pressed towards the direction inside the accessory 110, and when the hook is aligned with the hook hole groove 123, the pressing is cancelled, then the accessory 110 is moved towards the circuit breaker body 120, so that the circuit breaker body 120 is attached to the accessory 110, the hook 113 enters the hook hole groove 123, at this time, because the hook 113 is the elastic plastic hook 113, the pressing is also cancelled, the hook 113 can be clamped with the side wall of the hook hole groove 123 due to the elastic recovery, so as to complete the clamping connection of the accessory 110 and the circuit breaker body 120. Of course, when the hook 113 passes through the hook hole slot 123, the second latch and the first latch 111 are connected through the latch linkage shaft 132, and the second handle and the first handle 112 are connected through the handle linkage shaft 131, so as to ensure that the circuit breaker body 120 and the accessory 110 can perform linkage action.

It should be noted that the hook 113 and the hook hole groove 123 are mutually matched and used together, and the specific arrangement positions of the hook 113 and the hook hole groove 123 are not limited herein, and the hook 113 may also be arranged on the circuit breaker body 120, and the corresponding hook hole groove 123 is arranged on the accessory 110.

In an implementation manner of the present invention, as shown in fig. 5, the hook 113 includes a connecting portion perpendicular to the splicing surface of the accessory 110 and a clamping portion 1131 disposed at the other end of the connecting portion and perpendicular to the connecting portion, the clamping portion 1131 is clamped with an inner wall of the splicing surface of the breaker body 120, and the clamping portion 1131 is provided with a leading-in angle.

The engaging portion 1131 is used for engaging with an inner wall of a splicing surface of the circuit breaker body 120 to engage and connect the circuit breaker body 120 and the accessory 110, and a guiding angle is provided on the engaging portion 1131, so that the engaging portion 1131 is easier to penetrate into the hook hole groove 123. It should be noted that the engaging portion 1131 is perpendicular to the connecting portion and faces away from the main body of the accessory 110, and those skilled in the art should know that the guiding angle should be opened at the outer side of the top end of the engaging portion 1131, so that the engaging portion 1131 tends to become smaller and larger from the outside to the inside, and the engaging is easier. The edge of the lead-in angle can be arranged as a straight line or an arc. That is, the introduction angle may be a triangular notch angle or a notch angle of an arc surface.

Optionally, as shown in fig. 4 and 5, a cover hole 124 is formed on a side wall of the circuit breaker body 120 corresponding to the extending direction of the engaging portion 1131, and a cover 1241 is covered on the cover hole 124.

The circuit breaker body 120 can be spliced with a plurality of accessories 110 with different functions to realize various protection functions, sometimes the existing accessory 110 needs to be replaced or removed, a cover hole 124 is formed in the side wall of the circuit breaker body 120 corresponding to the extending direction of the clamping portion 1131, when the existing accessory 110 needs to be replaced or removed, a tool passes through the cover hole 124 and presses the clamping portion 1131, so that the clamping hook 113 moves towards the inner direction of the circuit breaker body 120, the clamping portion 1131 is aligned with the clamping hook hole groove 123, then the accessory 110 moves towards the direction far away from the circuit breaker body 120, and the circuit breaker body 120 is separated from the accessory 110.

In the use process of the circuit breaker body 120, dust or small particle impurities are difficult to avoid entering the circuit breaker body 120 from the cover sealing hole 124, the linkage inside the circuit breaker body 120 is influenced, the performance of the circuit breaker is influenced, the cover sealing 1241 is arranged on the cover sealing hole 124 in a covering mode, and the cover sealing 1241 can avoid the problems. When the accessory 110 needs to be replaced or removed, the cover 1241 may be removed first, and then the above steps may be performed to remove the existing accessory 110.

In one embodiment of the present invention, as shown in fig. 5, the cover 1241 is an elastic cover 1241, and the elastic cover 1241 is pressed inward to contact the engaging portion 1131.

If the cover 1241 is to be removed and a tool is used to press the engaging portion 1131 each time the accessory 110 is replaced, the process is complicated and the operation is not easy, the present invention provides another easy-to-operate manner, in which the cover 1241 is configured as an elastic cover 1241, and pressing the cover 1241 can make the elastic cover 1241 protrude inward and contact with the engaging portion 1131 and can press the engaging portion 1131 to move toward the inside of the circuit breaker body 120. The engaging portion 1131 is aligned with the hook hole groove 123, and then the accessory 110 is moved away from the breaker body 120, so that the breaker body 120 is separated from the accessory 110. The elastic cover 1241 not only closes the cover hole 124 but also simplifies the process of removing the attachment 110, making the operation easier and more convenient.

It should be understood by those skilled in the art that the deformation amount of the elastic member is limited, and the elastic cover 1241 of the present embodiment is no exception, so the distance between the engaging portion 1131 and the elastic cover 1241 should be within the deformation amount of the elastic cover 1241. For example, the hooks 113 of the present embodiment are disposed on the periphery of the joint surface of the accessory 110, and the hook hole slots 123 are correspondingly disposed on the periphery of the joint surface of the breaker body 120, so that the distance between the cover hole 124 and the elastic cover 1241 is relatively small.

Optionally, as shown in fig. 2, the hooks 113 are multiple, the hooks 113 are distributed on the splicing surface, the splicing surface of the circuit breaker body 120 is correspondingly provided with multiple hook hole slots 123, and the hooks 113 respectively penetrate through the corresponding hook hole slots 123 to clamp the accessory 110 and the circuit breaker body 120.

In order to ensure that the stability of the splicing of the circuit breaker body 120 and the accessory 110 is higher, the embodiment of the utility model is provided with a plurality of hooks 113, the plurality of hooks 113 are distributed on the splicing surface, and certainly, a plurality of hook hole grooves 123 are arranged on the circuit breaker body 120 corresponding to the hooks 113. The number of hook hole grooves 123 is generally the same as the number of hooks 113.

It should be noted that, the more the hooks 113, the more the number of the pressing engagement portions 1131 needs to be controlled during splicing, which affects the working efficiency of the operator, and optionally, the number of the hooks 113 is set to 3, and the number of the corresponding hook holes 123 is also set to 3, so as to improve the splicing stability of the breaker body 120 and the accessory 110 on the premise of ensuring that the splicing efficiency is not affected as much as possible.

In an implementation manner of the present invention, as shown in fig. 6 and 7, a first rivet hole 114 is disposed on the splicing surface of the accessory 110, a second rivet hole 125 is correspondingly disposed on the splicing surface of the breaker body 120, and the first rivet hole 114 and the second rivet hole 125 are riveted by the same rivet, so that the accessory 110 is spliced with the breaker body 120. At least two pairs of first rivet holes 114 and second rivet holes 125 are provided, and each pair of first rivet holes and second rivet holes is riveted by the same rivet, so that the accessory 110 and the circuit breaker body 120 are assembled and the accessory 110 and the circuit breaker body 120 are fastened.

Optionally, in another embodiment of assembling the accessory 110 and the circuit breaker body 120, a first rivet hole 114 and a third rivet hole 117 are disposed on the assembly surface of the accessory 110, a second rivet hole 125 and a fourth rivet hole 127 are disposed on the assembly surface of the circuit breaker body 120, the first rivet hole 114 and the second rivet hole 125 are correspondingly disposed, and at least two pairs of the first rivet hole 114 and the second rivet hole 125 are disposed, and each pair of the first rivet hole 114 and the second rivet hole 125 is riveted by the same rivet, so as to assemble the circuit breaker body and the accessory. The positional relationship between the third rivet hole 117 and the fourth rivet hole 127 is not specifically limited, and the third rivet hole 117 and the fourth rivet hole 127 may be correspondingly disposed, and are riveted by the same rivet, or the third rivet hole 117 and the fourth rivet hole 127 may be staggered, and are riveted by the respective rivets, so as to fasten the accessory 110 to the circuit breaker body 120.

Optionally, in another embodiment of assembling the accessory 110 and the circuit breaker body 120, a splicing surface of the accessory 110 is provided with a hook 113 and a third rivet hole 117, a splicing surface of the circuit breaker body 120 is provided with a hook hole groove 123 and a fourth rivet hole 127, the hook 113 and the hook hole groove 123 are correspondingly arranged and at least two pairs of hooks are provided, and the hook 113 penetrates through the corresponding hook hole groove 123. So as to assemble the accessory 110 and the breaker body 120. The position relationship between the third rivet hole 117 and the fourth rivet hole 127 is not specifically limited, and the third rivet hole 117 and the fourth rivet hole 127 may be correspondingly disposed, and are riveted by the same rivet, or the third rivet hole 117 and the fourth rivet hole 127 may be staggered, and the fastening of the accessory 110 and the breaker body 120 is realized by riveting the respective rivets.

Rivet riveting is another way for assembling the circuit breaker body 120 and the accessory 110, and the rivet riveting can ensure that the assembling of the circuit breaker body 120 and the accessory 110 is more stable.

Optionally, as shown in fig. 6 and 7, a guide boss 115 is further disposed on the joint surface of the accessory 110, a guide groove 126 is correspondingly disposed on the joint surface of the circuit breaker body 120, and the guide boss 115 is inserted into the guide groove 126 to fix the positions of the accessory 110 and the circuit breaker body 120.

The guide boss 115 is matched with the guide groove 126, the guide boss 115 is inserted into the guide groove 126 during assembly, the relative position of the circuit breaker body 120 and the accessory 110 is fixed, and the rivet is prevented from being distorted during rivet assembly of the circuit breaker body 120 and the accessory 110, so that assembly dislocation is caused, and a guide effect is achieved. At least two pairs of the guide bosses 115 and the guide grooves 126 are required in order to fix the relative positions of the breaker body 120 and the accessories 110. As an example, the embodiment of the present invention provides three pairs of guide bosses 115 and guide grooves 126.

It should be noted that, the relative positions of the circuit breaker body 120 and the accessory 110 are fixed, the guide bosses 115 and the guide grooves 126 are used to be matched with each other, the specific setting positions of the guide bosses 115 and the guide grooves 126 are not limited, the guide bosses 115 can be arranged on the splicing surface of the circuit breaker body 120, the guide grooves 126 can be correspondingly arranged on the splicing surface of the accessory 110, of course, a part of the guide bosses 115 can be arranged on the splicing surface of the circuit breaker body 120, a part of the guide bosses 115 are arranged on the splicing surface of the accessory 110, and the guide grooves 126 are correspondingly arranged.

In one embodiment of the present invention, as shown in fig. 1 and 2, the end surface of the attachment 110 is provided with a terminal 116 for externally connecting a signal line.

It should be noted that the protection function of the accessory 110 is related to the connection terminal 116 of the accessory 110 and the internal structural arrangement of the accessory 110, and that for a structurally determined accessory 110, a certain function is realized when a signal is obtained. That is, the connection terminal 116 is a port that introduces a signal into the accessory 110. For the structural arrangement of the wiring terminal 116, the utility model provides three structures, firstly, the wiring terminal 116 comprises a first wiring hole and an operation hole, an elastic sheet and a wiring board are arranged in the first wiring hole, a clamping hole is formed in one end of the elastic sheet, the other end of the elastic sheet and the wiring board penetrate into the clamping hole from two opposite directions and are mutually abutted, the abutting part is used for clamping a signal wire, and the other end of the elastic sheet can be pressed by penetrating through the operation hole. Secondly, annex 110 terminal surface is the stair structure, and binding post 116 sets up on stair structure's ladder, and binding post 116 is including being located stair structure mutually perpendicular's screw hole and second wiring hole on the surface respectively, and screw hole and second wiring hole intercommunication, signal line are inserted by second wiring hole, and the screw is screwed in the screw hole to fixed signal line. Third, the connection terminal 116 includes a plug board having two elastic arms, the two elastic arms are provided with clamping portions abutting against each other, and the clamping portions are used for inserting signal lines. The structure of the connection terminal 116 is not particularly limited, and may be one of the three structures, or other connection structures.

Optionally, the accessory 110 may include one of an over-under voltage accessory 110, a shunt auxiliary contact accessory 110, and a leakage accessory 110.

When the accessory 110 is the overvoltage and undervoltage accessory 110, the accessory 110 and the circuit breaker body 120 are assembled in the manner described above, a signal is connected to the wiring terminal 116, and when the accessory 110 determines that the overvoltage and undervoltage signal is passed, the first latch 111 is released and drives the second latch to be released through the latch linkage shaft 132, and the second latch is released to enable the circuit breaker body 120 to be switched off, so as to complete the overvoltage and undervoltage protection function.

The shunt auxiliary contact accessory 110 can perform the shunt function and the auxiliary contact function according to the number of the terminals 116 and the internal wiring structure of the accessory 110, can perform the shunt or auxiliary contact function by one accessory 110, and can also combine the shunt auxiliary contact function in one accessory 110.

When the accessory 110 is the leakage accessory 110, the accessory 110 and the circuit breaker body 120 are assembled in the manner described above, when the signal is connected to the wiring terminal 116, and the accessory 110 determines that the signal is a leakage signal, the first latch 111 is tripped and drives the second latch to trip through the latch linkage shaft 132, and the second latch is tripped to enable the circuit breaker body 120 to be switched off, so as to complete the leakage protection function.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a plug-in circuit breaker, its characterized in that, including the circuit breaker body and with the annex of circuit breaker body concatenation, be provided with first hasp and first handle in the annex, this internal second hasp and the second handle of being provided with of circuit breaker body with annex concatenation face is provided with handle linkage hole and hasp linkage hole that is used for passing handle universal driving shaft and hasp universal driving shaft, the second hasp with first hasp passes through hasp linkage shaft and connects, the second handle with first handle passes through handle linkage shaft and connects, the tripper in the annex is according to the first hasp dropout of signal control and drive the second hasp dropout.

2. The plug-in circuit breaker according to claim 1, wherein the splicing surface of the accessory is provided with a hook, the splicing surface of the circuit breaker body is correspondingly provided with a hook hole slot, and the hook passes through the hook hole slot to clamp the accessory with the circuit breaker body.

3. The plug-in circuit breaker according to claim 2, wherein the hook is a plastic hook having elasticity, and the hook comprises a connecting portion perpendicular to the splicing surface and a locking portion disposed at the other end of the connecting portion and perpendicular to the connecting portion, the locking portion is locked with the inner wall of the splicing surface of the circuit breaker body, and the locking portion is provided with a leading-in angle.

4. The plug-in circuit breaker according to claim 3, wherein a cover hole is formed on a side wall of the circuit breaker body corresponding to the extending direction of the engaging portion, and the cover hole is provided with a cover.

5. The plug-in circuit breaker according to claim 4, wherein the cover is an elastic cover, and pressing causes the elastic cover to be inwardly projected to contact the engaging portion.

6. The plug-in circuit breaker according to claim 2, wherein the plurality of hooks are distributed on a splicing surface, the splicing surface of the circuit breaker body is correspondingly provided with a plurality of hook holes, and the plurality of hooks respectively penetrate through the corresponding hook holes to clamp the accessory and the circuit breaker body.

7. The plug-in circuit breaker according to claim 1 or 2, wherein a first rivet hole is provided on the attachment splicing surface, a second rivet hole is correspondingly provided on the breaker body splicing surface, and the first rivet hole and the second rivet hole are riveted by the same rivet, so that the attachment is spliced with the breaker body.

8. The plug-in circuit breaker according to claim 7, wherein the attachment splicing surface is further provided with a guiding boss, the breaker body splicing surface is correspondingly provided with a guiding groove, and the guiding boss is inserted into the guiding groove to fix the positions of the attachment and the breaker body.

9. Plug-in circuit breaker according to claim 1, characterized in that the end face of the accessory is provided with terminals for the external connection of signal lines.

10. The plug-in circuit breaker according to claim 1, characterized in that the accessory can comprise one of an overvoltage-undervoltage accessory, a shunt auxiliary contact accessory and a leakage accessory.

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