CN215299161U

CN215299161U - Circuit breaker

Info

Publication number: CN215299161U
Application number: CN202120943392.0U
Authority: CN
Inventors: 曹胜鑫; 杨卫; 鄢君哲; 刘伟; 钟显军
Original assignee: Shanghai Liangxin Electrical Co Ltd
Current assignee: Shanghai Liangxin Electrical Co Ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-12-24
Anticipated expiration: 2031-04-30

Abstract

The application discloses circuit breaker relates to the switch electrical technology field. The circuit breaker comprises a shell, a circuit board, a conductive elastic part and a contact, wherein the circuit board, the conductive elastic part and the contact are arranged in the shell, the circuit board is powered on or powered off through the contact or separation of the conductive elastic part and the contact, a toggle switch is further arranged in the shell and is rotatably connected with the shell, and the toggle switch comprises a rotating part and a toggle part which is rotatably connected with the rotating part; when the rotating piece and the poking piece are locked, the rotating piece and the poking piece synchronously rotate so that the poking piece drives the conductive elastic piece to be in contact with the contact; when the rotating piece and the stirring piece are unlocked, the rotating piece and the stirring piece rotate relatively, and the conductive elastic piece is separated from the contact. The leakage protection function can be switched between on and off according to actual application requirements.

Description

Circuit breaker

Technical Field

The application relates to the technical field of switch electricity, in particular to a circuit breaker.

Background

The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. Among them, a Residual Current circuit breaker (Residual Current circuit breaker) is a switch that can automatically operate when a leakage Current in a circuit exceeds a predetermined value. The overload and short-circuit protection circuit is mainly used for protecting the electric shock of a person with fatal danger when the equipment has leakage faults, has the overload and short-circuit protection function, can be used for protecting the overload and short circuit of a circuit or a motor, and can also be used for infrequently switching and starting the circuit under the normal condition.

An inductor is arranged in the residual current circuit breaker, the live wire and the zero wire are wound on the inductor for several turns by adopting a parallel winding method, and a secondary coil is arranged on the inductor. When the live wire and the zero wire of the same phase work normally, the magnetic flux generated by the current is just offset, and no voltage can be induced in the secondary coil. If a certain line has electric leakage or is not connected with the zero line, the currents of the live line and the zero line passing through the inductor are unbalanced, so that voltage is induced in the secondary coil, and the tripping device is operated to trip through the electromagnet.

In some application places where leakage protection is used at ordinary times and leakage protection is not needed temporarily, the traditional leakage circuit breaker has no switching on and off selection of the leakage function, and the function of temporarily closing the leakage protection cannot be realized.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide a circuit breaker, can switch the opening and closing of earth leakage protection function according to the practical application demand.

The embodiment of the application is realized as follows:

the embodiment of the application provides a circuit breaker, which comprises a shell, a circuit board, a conductive elastic part and a contact, wherein the circuit board, the conductive elastic part and the contact are arranged in the shell; when the rotating piece and the poking piece are locked, the rotating piece and the poking piece synchronously rotate so that the poking piece drives the conductive elastic piece to be in contact with the contact; when the rotating piece and the stirring piece are unlocked, the rotating piece and the stirring piece rotate relatively, and the conductive elastic piece is separated from the contact.

Optionally, the toggle switch further comprises a locking member slidably connected to the rotating member, so that the rotating member and the toggle member are locked or unlocked.

Optionally, the rotating part comprises a rotating part rotatably connected with the housing, and a handle connected with the rotating part; the locking piece comprises a sliding cover and a sliding rod connected with the sliding cover; the poking piece is rotatably connected with the rotating part, the sliding cover is slidably connected with the handle, and the sliding rod sequentially penetrates through the handle and the rotating part.

Optionally, the rotating part comprises a hollow upright column rotatably connected with the shell, and a guide part concentrically arranged on an outer ring of the hollow upright column; the poking piece comprises a lantern ring and a boss arranged on the lantern ring, the lantern ring is sleeved on the hollow upright post, a notch capable of being connected with the sliding rod in a clamped mode is formed in the lantern ring, and the boss is used for abutting against the conductive elastic piece.

Optionally, a limit post is disposed in the housing, and when the rotating member and the toggle member are unlocked, the conductive elastic member has an elastic force that enables the boss to abut against the limit post.

Optionally, the handle is a strip, first buckles are arranged on two opposite sides of the handle in the width direction, and second buckles buckled with the first buckles are correspondingly arranged on the inner wall of the sliding cover buckled with the handle.

Optionally, a sliding groove is further formed in the handle, the extending direction of the sliding groove is consistent with the length direction of the handle, a protrusion is further arranged on the inner wall of the sliding groove, and the protrusion is used for being abutted against the sliding rod.

Optionally, the circuit breaker further comprises a first wire and a second wire, the conductive elastic member is connected with a circuit loop of the circuit breaker through the first wire, and the contact is connected with the circuit board through the second wire.

Optionally, be provided with spacing portion in the casing, electrically conductive elastic component is including the first support arm, joint portion and the second support arm that connect gradually, joint portion with spacing portion joint, first support arm with the boss supports and holds, just first support arm with contact or separation, the second support arm with first wire is connected.

Optionally, one end of the first wire is disposed on a sidewall of the housing, and the second support arm abuts against the first wire on the sidewall.

Optionally, the circuit breaker further includes an operating mechanism connected to the toggle switch, so that the operating mechanism performs a switching-off operation or a switching-on operation, wherein when the rotating member is locked with the toggle member, the conductive elastic member is in contact with the contact in a process of performing the switching-on operation by the operating mechanism, and after the switching-off operation performed by the operating mechanism is completed, the conductive elastic member is separated from the contact.

The beneficial effects of the embodiment of the application include:

the circuit breaker that this application embodiment provided when needs use earth leakage protection function, makes toggle switch's rotation piece and dial locking between the piece, when making the circuit breaker combined floodgate through toggle switch, rotates the piece and dials the synchronous rotation of piece to drive the action of electrically conductive elastic component, make electrically conductive elastic component and contact, thereby make earth leakage protection function open. In some power utilization places that do not need earth leakage protection function temporarily, make the rotating member of toggle switch with dial and remove the locking between the piece, when the circuit breaker is closed a floodgate through toggle switch, only rotate the piece and rotate, dial the piece and keep motionless, at this moment, be in the detached state between electrically conductive elastic component and the contact to guarantee earth leakage protection function's closing, realize the continuity of power consumption. By adopting the mode, the opening and closing of the leakage protection function can be switched according to the actual application requirement.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required 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 application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a circuit breaker according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a toggle switch according to an embodiment of the present disclosure;

fig. 3 is a second schematic structural diagram of a toggle switch according to an embodiment of the present disclosure;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

fig. 5 is a schematic structural diagram of a conductive elastic element according to an embodiment of the present application.

Icon: 100-a circuit breaker; 110-a housing; 112-a limiting column; 114-a limiting part; 120-a conductive elastic member; 122-a first support arm; 124-clamping part; 126-a second support arm; 130-a contact; 140-toggle switch; 142-a rotating member; 1422-rotating part; 1422 a-hollow column; 1422b — guide; 1424-handle; 1426-first snap; 1428-chute; 1429-convex; 144-a toggle member; 1442-a collar; 1444-boss; 1446-gap; 146-a lock; 1462-sliding cover; 1464-sliding bar; 1466-second catch; 150-a first conductive line; 160-a second wire; 170-operating mechanism.

Detailed Description

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

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.

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. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The leakage circuit breaker is used for detecting electric leakage and provides the leakage protection function to the system of taking place the electric leakage in distribution system, nevertheless uses leakage protection at some ordinary times, and does not need leakage protection's application place temporarily, and traditional leakage circuit breaker does not have the switching on and off of leakage function and selects, has not realized the function of closing leakage protection temporarily. Therefore, the embodiment of the application provides the following scheme to realize that the residual current circuit breaker can switch the on and off of the leakage protection function according to the actual application requirements.

Referring to fig. 1, the present embodiment provides a circuit breaker 100, including a housing 110, and a circuit board, a conductive elastic element 120 and a contact 130, which are disposed in the housing 110, wherein the circuit board is powered on or powered off by contact or separation between the conductive elastic element 120 and the contact 130, a toggle switch 140 rotatably connected to the housing 110 is further disposed in the housing 110, and the toggle switch 140 includes a rotating element 142 and a toggle element 144 rotatably connected to the rotating element 142; when the rotating member 142 and the toggle member 144 are locked, the rotating member 142 and the toggle member 144 rotate synchronously, so that the toggle member 144 drives the conductive elastic member 120 to contact with the contact 130; when the rotating member 142 and the toggle member 144 are unlocked, the rotating member 142 and the toggle member 144 rotate relatively, and the conductive elastic member 120 is separated from the contact 130.

Specifically, when performing the leakage detection, the circuit board needs to take electricity from the outlet terminal of the circuit breaker 100 or from the inlet terminal of the circuit breaker 100. When the circuit board is powered, the conductive elastic element 120 and the contact 130 are arranged on the power-taking circuit of the circuit board, so that the power-on or power-off of the circuit board can be controlled through the contact or separation of the conductive elastic element 120 and the contact 130. For example, when the earth leakage protection function of the circuit breaker 100 is required to be turned on, the conductive elastic member 120 is brought into contact with the contact 130. When the earth leakage protection function of the circuit breaker 100 is required to be turned off, the conductive elastic member 120 and the contact 130 are separated.

When controlling the contact or separation between the conductive elastic member 120 and the contact 130, it can be controlled by the toggle switch 140. For example, the toggle switch 140 rotatably connected to the housing 110 can control the opening or the closing of the earth leakage protection function when the circuit breaker 100 is controlled to open or close. In practical application, when the earth leakage protection function of the circuit breaker 100 needs to be turned on, the rotating member 142 and the toggle member 144 of the toggle switch 140 are locked, at this time, when the rotating member 142 rotates to close the circuit breaker 100, the toggle member 144 rotates synchronously with the rotating member 142, and when the toggle member 144 rotates, the conductive elastic member 120 deforms under a force and contacts with the contact 130, so as to achieve the power obtaining of the circuit board. Similarly, when the rotating member 142 rotates in the opposite direction to open the circuit breaker 100, the toggle member 144 rotates synchronously with the rotating member 142, and when the toggle member 144 rotates, the biasing force on the conductive elastic member 120 is released, so that the conductive elastic member 120 recovers the elastic deformation, thereby achieving the power loss of the circuit board. With the above-described form, the switching-on and the opening of the earth leakage protection function of the circuit breaker 100 can be simultaneously realized by the toggle switch 140.

When the earth leakage protection function is required to be disconnected, the rotating part 142 and the toggle part 144 of the toggle switch 140 are unlocked, at this time, when the rotating part 142 rotates to close the circuit breaker 100, the toggle part 144 and the rotating part 142 can rotate relatively, the position of the toggle part 144 kept by the elastic force of the conductive elastic part 120 is relatively fixed, no matter when the circuit breaker 100 is opened or closed (the rotating part 142 rotates forwards or backwards), the toggle part 144 is always in the same state, the toggle part 144 does not provide the abutting force which enables the conductive elastic part 120 to deform under the force, and the conductive elastic part 120 and the contact 130 are in the separated state.

In addition, the arrangement form of the contact 130 is not particularly limited in the embodiment of the present application, and for example, the contact 130 may adopt a conductive column, and may also adopt other forms such as an elastic sheet, as long as stability of electrical connection with the conductive elastic member 120 can be achieved.

The circuit breaker 100 provided by the embodiment of the application enables the rotating part 142 and the toggle part 144 of the toggle switch 140 to be locked when the leakage protection function is needed, and enables the circuit breaker 100 to be switched on through the toggle switch 140, the rotating part 142 and the toggle part 144 synchronously rotate to drive the conductive elastic part 120 to move, so that the conductive elastic part 120 is contacted with the contact 130, and the leakage protection function is enabled to be switched on. In some power utilization places where the leakage protection function is temporarily not needed, the rotating part 142 and the toggle part 144 of the toggle switch 140 are unlocked, when the circuit breaker 100 is switched on through the toggle switch 140, only the rotating part 142 rotates, the toggle part 144 remains stationary, and at this time, the conductive elastic part 120 and the contact 130 are in a separated state, so that the leakage protection function is ensured to be switched off, and the continuity of power utilization is realized. By adopting the mode, the opening and closing of the leakage protection function can be switched according to the actual application requirement.

As shown in fig. 1 and 2, the toggle switch 140 further includes a locking member 146 slidably connected to the rotating member 142, and the rotating member 142 includes a rotating portion 1422 rotatably connected to the housing 110, and a handle 1424 connected to the rotating portion 1422; the latch 146 includes a sliding cover 1462, and a slider 1464 connected to the sliding cover 1462; the toggle member 144 is rotatably connected to the rotating portion 1422, the sliding cover 1462 is slidably connected to the handle 1424, and the sliding bar 1464 is sequentially inserted into the handle 1424 and the rotating portion 1422 (as shown in fig. 3 and 4), so as to lock or unlock the rotating member 142 and the toggle member 144.

Specifically, when the toggle switch 140 controls the switching on or switching off of the circuit breaker 100, the handle 1424 may be toggled to rotate the rotating portion 1422, so as to implement the switching on or switching off operation of the circuit breaker 100. When the handle 1424 is pulled, the sliding cover 1462 slidably connected to the handle 1424 is slid to drive the sliding bar 1464 and the sliding cover 1462 to move synchronously. Because the slide bar 1464 is sequentially arranged in the handle 1424 and the rotating part 1422 in a penetrating manner, when the slide bar 1464 slides towards the positions of the toggle piece 144 and the rotating part 1422, the toggle piece 144 and the rotating part 1422 can be respectively clamped with the slide bar 1464, so that the rotating piece 142 and the toggle piece 144 are locked. When the slide bar 1464 slides to a position away from the toggle piece 144 and the rotating part 1422, the toggle piece 144 is normally connected with the rotating part 1422 in a rotating manner, so that the locking between the rotating piece 142 and the toggle piece 144 is released.

As shown in fig. 2 and 4, the rotating part 1422 includes a hollow column 1422a rotatably connected to the housing 110, and a guide part 1422b concentrically disposed on an outer circumference of the hollow column 1422 a; the toggle member 144 includes a collar 1442 and a boss 1444 disposed on the collar 1442, the collar 1442 is sleeved on the hollow column 1422a, a notch 1446 capable of being clamped with the sliding rod 1464 is disposed on the collar 1442, and the boss 1444 is used for abutting against the conductive elastic member 120.

Specifically, a rotating shaft may be disposed in the housing 110, and the hollow upright 1422a may be sleeved on the rotating shaft, so that the rotating portion 1422 is rotatably connected to the housing 110 through the hollow upright 1422 a. Through setting up guide 1422b in the outer lane of hollow column 1422a for when rotating between rotation 1422 and the casing 110, guide 1422b and casing 110 laminating and sliding connection are favorable to guaranteeing the leakproofness of toggle switch 140 department, and are more smooth-going when making toggle switch 140 move. The toggle member 144 is rotatably connected to the hollow column 1422a of the rotating portion 1422 through a collar 1442, and a notch 1446 is provided on a side of the collar 1442 facing the sliding bar 1464, so that when the sliding bar 1464 slides towards the collar 1442, the sliding bar 1464 can be engaged with the collar 1442 through the notch 1446, and since the sliding bar 1464 is affected by the position limitation of the handle 1424, the positions of the sliding bar 1464 and the collar 1442 are relatively fixed, and at this time, the position between the lock member 146 and the toggle switch 140 is also relatively fixed, so that the toggle member 144 is relatively fixed, i.e., in a locked state, through the sliding bar 1464 of the lock member 146 and the rotating member 142. It will be appreciated that when the slide bar 1464 slides in the opposite direction, the slide bar 1464 is no longer engaged with the collar 1442, and the collar 1442 can rotate relative to the hollow upright 1422a, i.e., the locking state is released.

By providing the protruding boss 1444 on the collar 1442, when the toggle member 144 and the rotating member 142 are locked, the collar 1442 rotates synchronously with the hollow column 1422a, and the protruding boss 1444 on the collar 1442 also rotates synchronously to provide a holding force for the conductive elastic member 120, so that the conductive elastic member 120 is forced to deform and contact with the contact 130. The arrangement form of the hollow upright 1422a is not particularly limited in the embodiment of the present application, for example, a slide rail for sliding the slide bar 1464 may be arranged on the hollow upright 1422a, so that the slide bar 1464 is simultaneously located in the slide rail and the notch 1446, thereby implementing stable locking.

As shown in fig. 1 and 2, the housing 110 is provided with a position-limiting post 112, and when the rotating member 142 and the toggle member 144 are unlocked, the conductive elastic member 120 has an elastic force that makes the boss 1444 abut against the position-limiting post 112.

Specifically, when the rotating member 142 and the toggle member 144 are unlocked, the collar 1442 and the hollow column 1422a can rotate relatively, and at this time, the conductive elastic member 120 supports the boss 1444 against the position of the position-limiting column 112 by its own elastic force, so that the position of the toggle member 144 is relatively fixed, and the toggle member 144 and the rotating member 142 are locked or unlocked by the locking member 146.

As shown in fig. 2, the handle 1424 is a strip, and the two opposite sides of the handle 1424 in the width direction are provided with first fasteners 1426, and the inner wall of the sliding cover 1462 fastened to the handle 1424 is correspondingly provided with second fasteners 1466 fastened to the first fasteners 1426.

Specifically, the first buckle 1426 and the second buckle 1466 may also be in a long strip shape, and extend in the length direction of the handle 1424, so as to limit the sliding cover 1462 and play a role in guiding. It should be noted that, in the embodiment of the present application, there is no specific limitation on the arrangement form of the first buckle 1426 and the second buckle 1466, and for example, the cross section of the first buckle 1426 and the cross section of the second buckle 1466 may be a triangle, a semi-ellipse, a semi-circle, or the like, as long as stable clamping can be achieved. When the locking member 146 is installed, the sliding cover 1462 is directly pressed onto the handle 1424, and the sliding cover 1462 is deformed by a force, so that the first buckle 1426 and the second buckle 1466 are buckled with each other.

As shown in fig. 2, the handle 1424 is further provided with a sliding groove 1428, an extending direction of the sliding groove 1428 is the same as the length direction of the handle 1424, an inner wall of the sliding groove 1428 is further provided with a protrusion 1429, and the protrusion 1429 is used for abutting against the sliding bar 1464.

Specifically, the handle 1424 is provided with the sliding groove 1428, and the extending direction of the sliding groove 1428 is the same as the length direction of the handle 1424, so that when the sliding cover 1462 is slid to slide the locking member 146 along the length direction of the handle 1424, the sliding groove 1428 acts as a limit to the sliding rod 1464 of the locking member 146. The inner wall of the sliding groove 1428 is provided with the protrusion 1429, so that when the sliding locking member 146 switches the leakage protection on/off state, the sliding locking member has a certain damping feeling, and the state switching needs to be realized by overcoming the resistance. Adopt above-mentioned form, can avoid because of the influence of external factors such as vibration, lock piece 146 slides by oneself in the time, is favorable to guaranteeing the stability of current state. It can be understood that, in order to ensure the reliability of the sliding bar 1464, the matching portion of the sliding bar 1464 and the sliding slot 1428 may be thickened, so that the sliding bar 1464 slides relative to the sliding slot 1428 to have better structural strength when overcoming the damping force, and avoid being broken due to the stress of the sliding bar 1464.

As shown in fig. 1, the circuit breaker 100 further includes a first wire 150 and a second wire 160, the conductive elastic member 120 is connected to the circuit loop of the circuit breaker 100 through the first wire 150, and the contact 130 is connected to the circuit board through the second wire 160.

Specifically, the conductive elastic member 120 is connected to the circuit loop of the circuit breaker 100 through the first conductive wire 150, and may be connected to a wire inlet end of the circuit breaker 100 or a wire outlet end of the circuit breaker 100 during connection. The contact 130 is connected to the circuit board through the second wire 160, so that the circuit board is normally powered when the conductive elastic member 120 contacts the contact 130, thereby putting the earth leakage protection function into use. When the conductive elastic element 120 is separated from the contact 130, the circuit board is powered off, so that the earth leakage protection function is removed from use. When the circuit is connected, the first wire 150 may be welded to the terminal block and the conductive elastic member 120 in the circuit loop of the circuit breaker 100, or may adopt other connection forms, such as plugging, which is not limited in this embodiment. In addition, the connection form of the second conductive line 160 is the same as or similar to that of the first conductive line 150, and is not described herein again.

It will be appreciated that the circuit breaker 100 has corresponding functional modules connected to the circuit board depending on the use of additional functions. For example, when the leakage protection function is used, the leakage protection circuit has an inductor and a leakage detection unit which are connected with the circuit board, and other additional functional modules connected with the circuit board can be selected according to actual needs.

When the circuit breaker is used, the circuit board is provided with corresponding integrated circuits (such as a signal amplifier, a controller and the like), the inductor collects a leakage current signal and transmits the signal to the circuit board for comparison, and when the collected signal is smaller than a set value, the circuit breaker 100 works normally. When the collected signal is greater than the set value, the electromagnetic release connected with the circuit board acts to disconnect the circuit breaker 100, so as to play a role in leakage protection.

As shown in fig. 1 and 5, a position-limiting portion 114 is disposed in the housing 110, the conductive elastic element 120 includes a first supporting arm 122, a clamping portion 124, and a second supporting arm 126, which are connected in sequence, the clamping portion 124 is clamped with the position-limiting portion 114, the first supporting arm 122 abuts against the boss 1444, the first supporting arm 122 contacts with or separates from the contact 130, and the second supporting arm 126 is connected with the first conductive wire 150.

Specifically, the conductive elastic member 120 is clamped with the limiting portion 114 through the clamping portion 124, so as to limit the conductive elastic member 120 and prevent the conductive elastic member 120 from shaking randomly. When the toggle member 144 is locked with the rotating member 142, the protrusion 1429 of the toggle member 144 can provide a holding force to the first support arm 122, so that the first support arm 122 is elastically deformed to contact the contact 130. And the second supporting arm 126 is connected with the first conducting wire 150 to form a closed loop, so as to open the leakage protection function. When the toggle member 144 is unlocked between the rotating members 142, the toggle member 144 can rotate relative to the rotating members 142, and the first support arm 122 abuts against the protrusion 1429, so that the toggle member 144 is located at a specific position, and the first support arm 122 is separated from the contact 130.

It is understood that the conductive elastic element 120 may be in the form of a conductive elastic sheet as shown in fig. 5, or in the form of a conductive torsion spring, and when the conductive elastic sheet is adopted, the limiting portion 114 may be correspondingly in the form of a clamping groove so as to be clamped and matched with the conductive elastic sheet. When the conductive torsion spring is used, the position-limiting portion 114 can be correspondingly used as a clamping column, so that the conductive torsion spring is matched with the clamping column.

In an alternative embodiment of the present application, one end of the first conductive wire 150 is disposed on a sidewall of the housing 110, and the second supporting arm 126 and the first conductive wire 150 are abutted against the sidewall.

Specifically, the length of the second support arm 126 is smaller than the length of the first support arm 122, so that the moment arm of the first support arm 122 is longer when the rotating member 142 rotates, and the contact between the first support arm 122 and the contact 130 is more labor-saving. When the second supporting arm 126 is shorter, the elastic deformation force required by the second supporting arm 126 is larger, and at this time, one end of the first wire 150 is located on the sidewall of the housing 110 and is disposed corresponding to the second supporting arm 126, and the elastic force of the second supporting arm 126 recovering the elastic deformation presses the first wire 150 against the sidewall, so that the second supporting arm 126 of the conductive elastic member 120 is stably pressed against the first wire 150.

In an alternative embodiment of the present application, the circuit breaker 100 further includes an operating mechanism 170 connected to the toggle switch 140, so that the operating mechanism 170 performs an opening or closing operation, wherein when the rotating member 142 is locked to the toggle member 144, the conductive elastic member 120 contacts the contact 130 during the closing operation performed by the operating mechanism 170, and after the opening operation performed by the operating mechanism 170 is completed, the conductive elastic member 120 is separated from the contact 130.

With the above-mentioned form, during the closing process, the closing of the circuit breaker 100 is performed after the conductive elastic member 120 contacts the contact 130, that is, after the conductive elastic member 120 contacts the contact 130, the leakage circuit device is closed and powered. During the opening process, the opening of the circuit breaker 100 is performed before the conductive elastic member 120 is separated from the contact 130, that is, after the opening of the circuit breaker 100, the conductive elastic member 120 is separated from the contact 130. Therefore, in the process of contacting or separating the conductive elastic element 120 and the contact 130, no arc is generated at the moment of opening or closing, which is beneficial to improving the safety and reliability of the circuit breaker 100 in use.

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

Claims

1. A circuit breaker is characterized by comprising a shell, a circuit board, a conductive elastic part and a contact, wherein the circuit board, the conductive elastic part and the contact are arranged in the shell, the circuit board is powered on or powered off through the contact or separation of the conductive elastic part and the contact, a toggle switch rotationally connected with the shell is further arranged in the shell, and the toggle switch comprises a rotating part and a toggle part rotationally connected with the rotating part; when the rotating piece and the poking piece are locked, the rotating piece and the poking piece synchronously rotate so that the poking piece drives the conductive elastic piece to be in contact with the contact; when the rotating piece and the stirring piece are unlocked, the rotating piece and the stirring piece rotate relatively, and the conductive elastic piece is separated from the contact.

2. The circuit breaker of claim 1, wherein the toggle switch further comprises a locking member slidably coupled to the rotating member to lock or unlock the rotating member from the toggle member.

3. The circuit breaker of claim 2, wherein the rotating member includes a rotating portion rotatably coupled to the housing, and a handle coupled to the rotating portion; the locking piece comprises a sliding cover and a sliding rod connected with the sliding cover; the poking piece is rotatably connected with the rotating part, the sliding cover is slidably connected with the handle, and the sliding rod sequentially penetrates through the handle and the rotating part.

4. The circuit breaker according to claim 3, wherein the rotating portion comprises a hollow post rotatably connected to the housing, and a guide portion provided on an outer periphery of the hollow post; the poking piece comprises a lantern ring and a boss arranged on the lantern ring, the lantern ring is sleeved on the hollow upright post, a notch capable of being connected with the sliding rod in a clamped mode is formed in the lantern ring, and the boss is used for abutting against the conductive elastic piece.

5. The circuit breaker according to claim 4, wherein a position-limiting post is disposed in the housing, and when the rotating member and the toggle member are unlocked, the conductive elastic member has an elastic force that causes the boss to abut against the position-limiting post.

6. The circuit breaker according to any one of claims 3-5, wherein the handle is elongated, and first fasteners are disposed on two opposite sides of the handle in the width direction, and second fasteners fastened with the first fasteners are correspondingly disposed on the inner wall of the sliding cover fastened with the handle.

7. The circuit breaker according to claim 6, wherein the handle is further provided with a sliding groove, the extending direction of the sliding groove is consistent with the length direction of the handle, and the inner wall of the sliding groove is further provided with a protrusion, and the protrusion is used for abutting against the sliding rod.

8. The circuit breaker of claim 4 or 5, further comprising a first conductor and a second conductor, wherein the conductive spring is connected to the circuit loop of the circuit breaker via the first conductor, and wherein the contact is connected to the circuit board via the second conductor.

9. The circuit breaker according to claim 8, wherein a limiting portion is arranged in the housing, the conductive elastic member comprises a first supporting arm, a clamping portion and a second supporting arm which are sequentially connected, the clamping portion is clamped with the limiting portion, the first supporting arm abuts against the boss, the first supporting arm contacts with or separates from the contact, and the second supporting arm is connected with the first wire.

10. The circuit breaker of claim 9, wherein one end of the first conductor is disposed on a sidewall of the housing, and the second support arm abuts against the first conductor on the sidewall.

11. The circuit breaker according to any one of claims 1-5, further comprising an operating mechanism coupled to the toggle switch such that the operating mechanism performs an opening or closing operation.