Moving contact structure and circuit breaker

Abstract

The utility model provides a moving contact structure and a circuit breaker, and relates to the technical field of circuit breakers, the moving contact structure comprises a moving contact, a lock catch, a contact torsion spring, a lock catch reset piece and a contact support, the moving contact is provided with a mounting hole, the contact support is provided with a mounting seat, the mounting hole of the moving contact is sleeved on the mounting seat, and the lock catch reset piece is arranged on the mounting seat. And the contact torsion spring is clamped and mounted on the contact support to fix the moving contact. The mounting hole is formed in the moving contact, the mounting seat is arranged on the contact support, and the moving contact and the contact support are assembled together to form a component through the contact spring, so that compared with a traditional hot melting riveting process, the structure is low in cost, convenient and fast to assemble and convenient to realize automatic assembly, the original lever and the contact support are integrated, and the production efficiency is improved. The injection molding process cost and the material management cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a moving contact structure and a circuit breaker. Background Art

[0002] At present, the circuit breaker uses hot-melt riveting technology for the moving contact and the contact support. Figure 5 , there are disadvantages such as high cost and poor stability, and the overall assembly of the moving contact assembly is relatively cumbersome, which is not conducive to automated assembly. In view of the above defects, this application is proposed. Utility Model Content

[0003] The utility model aims to provide a moving contact structure and a circuit breaker, which solves the problems of high cost and poor stability caused by the hot-melt riveting process adopted between the moving contact and the contact support at the current stage.

[0004] In order to solve the above problems, the utility model provides a moving contact structure, including a moving contact, a lock, a contact torsion spring, a lock reset piece and a contact support, the moving contact is provided with a mounting hole, the contact support is provided with a mounting seat, the mounting hole of the moving contact is sleeved on the mounting seat, and the contact torsion spring is clamped and installed on the contact support to fix the moving contact.

[0005] According to an embodiment of the utility model, a lever portion is provided on the contact support.

[0006] According to an embodiment of the utility model, a positioning groove is provided on the moving contact.

[0007] According to an embodiment of the present invention, the mounting hole is a circular hole, and the mounting seat is a cylindrical structure.

[0008] According to an embodiment of the utility model, the mounting hole and the mounting seat are clearance-fitted.

[0009] According to an embodiment of the utility model, a snap-in groove is provided on the contact support.

[0010] According to an embodiment of the utility model, a hook-shaped structure is provided at one end of the contact torsion spring that cooperates with the positioning groove.

[0011] A circuit breaker is provided with the above-mentioned moving contact structure.

[0012] The beneficial effect of the utility model is that by setting a mounting hole on the moving contact, setting a mounting seat on the contact support, and assembling the moving contact and the contact support together into a component through a contact spring, compared with the traditional hot melt riveting process, the structure has low cost, convenient assembly, and is easy to realize automated assembly. At the same time, the original lever and contact support are combined into one, which can reduce the cost of the injection molding process and reduce the material management cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 It is a schematic diagram of the circuit breaker structure;

[0015] Figure 2 This is a schematic diagram of the moving contact structure from the front view;

[0016] Figure 3 This is a schematic diagram of the moving contact structure from the back side;

[0017] Figure 4 This is the explosion diagram of the moving contact structure;

[0018] Figure 5 Schematic diagram of the traditional moving contact structure. DETAILED DESCRIPTION

[0019] The following description is only used to disclose the utility model so that those skilled in the art can implement the utility model. The embodiments described below are only for example, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other solutions that do not deviate from the spirit and scope of the utility model.

[0020] A moving contact structure, such as Figure 2-Figure 4 , including a moving contact 11, a lock 12, a contact torsion spring 13, a lock reset member 14 and a contact support 15. The moving contact 11 is provided with a mounting hole 111, and the contact support 15 is provided with a mounting seat 151. The mounting hole 111 of the moving contact 11 is sleeved on the mounting seat 151, and the contact torsion spring 13 is snap-fitted and installed on the contact support 15 to fix the moving contact 11.

[0021] Specifically, the mounting hole 111 is a round hole, the mounting seat 151 is a cylindrical structure, the mounting hole 111 and the mounting seat 151 are installed with a clearance fit, a positioning groove 112 is provided on the moving contact 11, which is used to position one end of the contact torsion spring 13, and a clamping groove 153 is provided on the contact support 15, which is used to clamp and fix the other end of the contact torsion spring 13. Preferably, a hook-shaped structure 131 is provided at the fitting position between the contact torsion spring 13 and the positioning groove 112, so that the contact torsion spring 13 can achieve a better fixing effect on the moving contact 11.

[0022] The lock catch 12 and the lock catch reset member 14 are plug-connected through the matching portion 122 and the matching portion 2 141. The contact support 15 is provided with a lever portion 152 to replace the contact support 15. Figure 5In the lever of the conventional moving contact structure, the lever part 152 is connected to the handle mechanism 2, and the mounting seat 151 has a through hole for the pin shaft to be inserted. The action of the handle mechanism 2 is transmitted to the lever part 152, so that the contact support 15 is moved.

[0023] By setting a mounting hole on the moving contact, setting a mounting seat on the contact support, and assembling the moving contact and the contact support together into a component through a contact spring, compared with the traditional hot melt riveting process, this structure has low cost, convenient assembly, and is easy to realize automated assembly. At the same time, the original lever and contact support will be combined into one, which can reduce the cost of the injection molding process and reduce material management costs.

[0024] A circuit breaker, such as Figure 1 The circuit breaker is provided with the above-mentioned moving contact structure 1, and the rest of the structure of the circuit breaker is consistent with the traditional circuit breaker, including the handle mechanism 2, the release 4, the wiring assembly 3, the arc extinguishing mechanism and other structures, which will not be repeated here.

[0025] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed and modified in any way.

Claims

1. A moving contact structure, characterized in that: The invention comprises a moving contact (11), a lock (12), a contact torsion spring (13), a lock reset piece (14) and a contact support (15); the moving contact (11) is provided with a mounting hole (111); the contact support (15) is provided with a mounting seat (151); the mounting hole (111) of the moving contact (11) is sleeved on the mounting seat (151); the contact torsion spring (13) is snap-fitted and mounted on the contact support (15) to fix the moving contact (11).

2. A moving contact structure according to claim 1, characterized in that: The contact support (15) is provided with a lever portion (152).

3. A moving contact structure according to claim 1 or 2, characterized in that: The moving contact (11) is provided with a positioning groove (112).

4. A moving contact structure according to claim 3, characterized in that: The mounting hole (111) is a circular hole, and the mounting seat (151) is a cylindrical structure.

5. A moving contact structure according to claim 4, characterized in that: The mounting hole (111) and the mounting seat (151) are clearance-fitted.

6. A moving contact structure according to claim 3, characterized in that: The contact support (15) is provided with a clamping groove (153).

7. A moving contact structure according to any one of claims 4 to 6, characterized in that: A hook-shaped structure (131) is provided at one end of the contact torsion spring (13) that cooperates with the positioning groove (112).

8. A circuit breaker, characterized in that: The circuit breaker is provided with a moving contact structure as claimed in any one of claims 1 to 7.

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