CN210956582U

CN210956582U - Tripping reset mechanism of circuit breaker

Info

Publication number: CN210956582U
Application number: CN201921760679.9U
Authority: CN
Inventors: 李光耀
Original assignee: Zhejinag Yetegm Electric Power Technology Co ltd
Current assignee: Zhejinag Yetegm Electric Power Technology Co ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-07-07
Anticipated expiration: 2029-10-18

Abstract

The utility model discloses a dropout canceling release mechanical system of circuit breaker, operating handle, release, link gear, arc control device and binding post including casing, setting in the casing, link gear is including fixing rocking arm on operating handle, setting connecting rod, lever subassembly, U type axle and the torque spring on the casing, U type axle one end is fixed on operating handle, the other end and setting on the connecting rod, the linkage is connected between connecting rod and the lever subassembly, torque spring one end is fixed on the rocking arm, the other end with lever subassembly rigid coupling, the relative arc control device one side of casing is provided with the static contact, the bottom of lever subassembly be provided with can with the moving contact of static contact looks butt, it has advantage that the overall arrangement is reasonable, the performance is good and long service life.

Description

Tripping reset mechanism of circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field specifically is a tripping and resetting mechanism of circuit breaker.

Background

When leakage current is generated in a power supply line, potential safety hazards of personnel, equipment and the like can be caused, and at present, a residual current operated circuit breaker is usually adopted to ensure that the circuit breaker can rapidly cut off a power supply in a short time when the leakage current is generated, so that the safety of personnel and electric equipment is protected. The residual current operated circuit breaker is a commonly used circuit breaker, has multiple protection functions such as earth leakage protection and the like, when detecting that leakage current with a certain value is generated in a power supply line controlled by the residual current operated circuit breaker, a control circuit causes a tripper to generate tripping action to drive a lock catch of an operating mechanism to generate unlocking action, the unlocking action causes the operating mechanism to execute tripping action, and after the tripping action is finished, related action pieces such as the tripper, the lock catch and the like automatically reset.

As shown in fig. 6 of the conventional prior art, the device comprises a housing 101, an operating handle 102 arranged in the housing 101, a trip mechanism 103, a linkage mechanism 104, an arc extinguishing device 105 and a wiring terminal 106, wherein a rocker arm 108 of a lever 107 on the linkage mechanism 104 is subjected to snap resetting by adopting the plastic elasticity characteristic of a wave tongue 109, and the part subjected to resetting by using the plastic elasticity of the wave tongue 109 has the problems of difficult processing, limited mechanical performance and the like in the design of an injection mold.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the dropout canceling release mechanical system of the circuit breaker that proposes rational in infrastructure, good performance and long service life.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a dropout canceling release mechanical system of circuit breaker, includes the casing, sets up operating handle, release, link gear, arc control device and binding post in the casing, link gear is including fixing rocking arm, the connecting rod of setting on the operating handle, lever assembly, U type axle and torsion spring on the casing, U type axle one end is fixed on operating handle, and the other end with set up on the connecting rod, the linkage is connected between connecting rod and the lever assembly, torsion spring one end is fixed on the rocking arm, the other end with lever assembly rigid coupling, the casing is provided with the static contact on one side of the arc control device relatively, the bottom of lever assembly is provided with the moving contact that can with static contact looks butt.

Preferably, the lever assembly comprises a lever, a hook, a release member and a hinge shaft arranged between the lever and the hook, the hook and the connecting rod are fastened with each other, and the release member is rotatable and fastened on the lever.

Preferably, the articulated shaft is provided with a boss, the lever is provided with an inclined plane hook, and one end of the torsion spring penetrates through the boss and is fixedly connected with the inclined plane hook.

Preferably, one side of the lever is provided with a butting part, and one side of the release is provided with a push rod which can be used for pushing the butting part.

Preferably, be provided with two gold pieces in the casing, be provided with the V type on the fastener and take off and collude, two gold piece one end is connected with binding post electricity, and the other end takes off with the V type and colludes the butt.

Preferably, the rocker arm is provided with a hook part, and the hook part is provided with a hook for fixing the torsion spring.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the special torsion spring on the lever component is assembled on the designed lever to replace the original plastic wave-shaped tongue to reset, so that the overall tripping performance of the product is better improved, the processing difficulty of the lever component is reduced, and the service life of the product is longer.

2. Each part on the link gear is rationally distributed, and is reliable and stable, makes the closing of circuit breaker more stable, the reliability that the dropout reset is higher through optimizing each part on the lever assembly.

Drawings

Fig. 1 is a schematic diagram of an internal structure of a tripping reset mechanism of a circuit breaker according to the present invention;

fig. 2 is a schematic diagram of an internal structure of a tripping reset mechanism of a circuit breaker according to the present invention;

fig. 3 is a schematic diagram of the internal structure of the tripping reset mechanism of the circuit breaker according to the present invention;

FIG. 4 is a schematic structural view of the lever assembly of the present invention;

FIG. 5 is a schematic structural view of the rocker arm of the present invention;

fig. 6 is a schematic structural diagram of the prior art of the present invention.

Detailed Description

The embodiment of the utility model provides a take electric leakage testing arrangement of instruction function circuit breaker. The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 6, a tripping reset mechanism of a circuit breaker includes a housing 1, an operating handle 2 disposed in the housing 1, a trip unit 3, a linkage mechanism 4, an arc extinguishing device 5, and a connection terminal 6, wherein the linkage mechanism 4 includes a rocker arm 41 fixed on the operating handle 2, a connection rod 42 disposed on the housing 1, a lever assembly 43, a U-shaped shaft 44, and a torsion spring 45, one end of the U-shaped shaft 44 is fixed on the operating handle 2, the other end of the U-shaped shaft is disposed on the connection rod 42, the connection rod 42 is linked with the lever assembly 43, one end of the torsion spring 45 is fixed on the rocker arm 41, the other end is fixedly connected with the lever assembly 43, one side of the housing 1 opposite to the arc extinguishing device 5 is provided with a stationary contact 7, the bottom of the lever assembly 43 is provided with a movable contact 8 capable of abutting against the stationary contact 7, a closing process of, the connecting rod 42 is driven, the hasp on the connecting rod 42 and the lever assembly 43 is used for realizing the closing state of the moving contact 8 and the static contact 7 under the action of the torque spring 45, the special torque spring 45 on the lever assembly 43 is assembled on a designed lever to replace an original plastic wave-shaped tongue for resetting, the overall tripping performance of a product is better improved, the processing difficulty of the lever assembly 43 is reduced, and the service life of the product is longer.

The lever assembly 43 comprises a lever 431, a hook 432, a release member 433 and a hinge shaft 434 arranged between the lever 431 and the hook 432, the hook 432 and the connecting rod 42 are fastened with each other, the release member 433 can rotate and is fastened on the lever 431, when the connecting rod 42 and the lever assembly 43 are fastened by the hook 432, when the release member 433 is fastened in an arc-shaped groove where the lever 431 is located, the moving contact 8 deflects leftwards and is abutted against the static contact 7 to realize switching on, and vice versa, switching off is realized.

The hinge shaft 434 is provided with a boss 435, the lever 431 is provided with an inclined plane hook 436, one end of the torsion spring 45 penetrates through the boss 435 and is fixedly connected with the inclined plane hook 436, the torsion spring 45 is fixed through the boss 435 and the inclined plane hook 436, and the torsion spring and the inclined plane hook are combined to reset and are not easy to fall out, so that the torsion spring is stable and reliable.

One side of the lever 431 is provided with a butting part 4311, one side of the release 3 is provided with a push rod 31 which can be used for butting the butting part 4311, the push rod 31 is stressed under the electromagnetic induction of short-circuit current to push out and butt against the butting part 4311 of the lever 431, and the lever 431 enables the moving contact 8 and the static contact 7 to be separated to realize opening under the counter-acting force of the torsion spring 45.

Be provided with two gold 9 in the casing 1, be provided with the V type on the release 433 and take off and collude 10, 9 one end of two gold is connected with binding post 6 electricity, and the other end takes off with the V type and colludes 10 butt, and when current overload, two gold 9 can be crooked and drive the V type and take off and collude 10 and make release 433 break away from lever 431, under torque spring 45 reaction force for moving contact 8 and the separation of static contact 7 realize separating brake, realize overload protection.

The rocker arm 41 is provided with a hook portion 411 for fixing the torsion spring 45, the rocker arm 41 is provided with a hook portion 411, the hook portion 411 is provided with a hook 412 for fixing the torsion spring 45, and the torsion spring 45 is fixedly connected with the rocker arm 41 through the hook 412.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a dropout canceling release mechanical system of circuit breaker, includes casing, operating handle, release, link gear, arc extinguishing device and binding post of setting in the casing, its characterized in that: the linkage mechanism comprises a rocker arm fixed on the operating handle, a connecting rod arranged on the shell, a lever assembly, a U-shaped shaft and a torsion spring, wherein one end of the U-shaped shaft is fixed on the operating handle, the other end of the U-shaped shaft is arranged on the connecting rod, the connecting rod is in linkage connection with the lever assembly, one end of the torsion spring is fixed on the rocker arm, the other end of the torsion spring is fixedly connected with the lever assembly, a static contact is arranged on one side of the shell, opposite to the arc extinguishing device, and a moving contact capable of being abutted to the static contact is arranged.

2. The trip reset mechanism of a circuit breaker of claim 1, wherein: the lever assembly comprises a lever, a clamping hook, a tripping piece and a hinged shaft arranged between the lever and the clamping hook, the clamping hook and the connecting rod are mutually fastened, and the tripping piece can rotate and is buckled on the lever.

3. The trip reset mechanism of a circuit breaker of claim 2, wherein: the articulated shaft is provided with a boss, the lever is provided with an inclined plane hook, and one end of the torsion spring penetrates through the boss and is fixedly connected with the inclined plane hook.

4. The trip reset mechanism of a circuit breaker according to claim 2 or 3, wherein: one side of the lever is provided with a butting part, and one side of the release is provided with a push rod which can be used for pushing the butting part.

5. The trip reset mechanism of a circuit breaker according to claim 2 or 3, wherein: the novel metal shell is characterized in that double metal pieces are arranged in the shell, a V-shaped trip is arranged on the trip piece, one end of each double metal piece is electrically connected with the wiring terminal, and the other end of each double metal piece is abutted to the V-shaped trip.

6. The trip reset mechanism of a circuit breaker according to claim 1, 2 or 3, wherein: the rocker arm is provided with a hook part, and the hook part is provided with a hook for fixing the torsion spring.