CN202454512U

CN202454512U - Contact terminal device of circuit breaker

Info

Publication number: CN202454512U
Application number: CN 201220057083
Authority: CN
Inventors: 杨海军; 曹兵兵; 崔光华; 赵军
Original assignee: FORETECH ELEC APP (JIANGSU) CORP Ltd
Current assignee: FORETECH ELEC APP (JIANGSU) CORP Ltd
Priority date: 2012-02-21
Filing date: 2012-02-21
Publication date: 2012-09-26
Anticipated expiration: 2022-02-21

Abstract

The utility model discloses a contact device of a circuit breaker. The contact device comprises a movable contact device and a fixed contact device, wherein the movable contact device comprises two movable contacts which are coaxially pivoted. The contact device is characterized in that the two movable contacts are fixed through a connecting piece and achieve synchronous circuity. The two movable contacts fixed through the connecting piece act consistently when the circuit breaker breaks, so that one independent movable contact is effectively prevented from being burnt out, the effective current-carrying area of the contact device can not be reduced after the circuit breaker breaks, and accordingly, the breaking performance of the contact device of the circuit breaker, as well as the operating stability and security of the whole circuit breaker, is improved.

Description

The contact of breaker device

Technical field

the utility model relates to a kind of contact of breaker device.

Background technology

conventional contact of breaker device is formed by trigger device 1 and static contact head device 2 two parts.The concrete Fig. 1 that combines; Shown in Figure 2; Specifically then be made up of two moving contact 1a the trigger device in one type of contact of breaker device at present, the bottom of these two moving contact 1a all has axis hole B, and is sheathed on the pivot by this axis hole B is coaxial; Thereby all can rotate around the axis, with this realize and static contact head device 2 between folding.

yet; There is drawback in use in present above-mentioned contact of breaker device: because two moving contact 1a are not fixed together; Can't synchronization action, electrodynamic repulsion force possibly make wherein a slice moving contact 1a elder generation disjunction when the circuit breaker disjunction like this, and the high heat that electric arc produces can only act on another sheet not on the moving contact 1a of disjunction; This sheet moving contact 1a scaling loss is sharply increased; Will make the current-carrying area of whole contact apparatus reduce greatly when reaching certain value, its result who causes not only can't make the contact of breaker device normally break off, even also can damage whole circuit breaker.

Summary of the invention

the utility model purpose is: the deficiency that exists to the existing contact apparatus of mentioning in the background technology and a kind of contact of breaker device that can guarantee two moving contact synchronous movements is provided effectively promotes the break performance of contact of breaker device and the job stability and the fail safe of whole circuit breaker with this.

The technical scheme of the utility model is: a kind of contact of breaker device, comprise trigger device and static contact head device, and said trigger device comprises two moving contacts of coaxial pivot joint; It is characterized in that between said two moving contacts fixing to sway synchronously through connector.

are further preferred; Connector described in the utility model is to be located at the middle connection stator of two moving contacts; Said connection stator is provided with two projections, corresponding respectively supporting in the location hole that has on two moving contacts with fixing two moving contacts.

are further preferred, connect two projection concentrics on the stator described in the utility model and be symmetrical set, and the hole heart of the location hole on two moving contacts overlaps.

Above-mentioned connection stator is adopted in , mainly is to be convenient to assembling.

certain said connector also can adopt threaded connector, such as screw or bolt.

the utility model is fixed together two moving contacts through connector; Guarantee the consistency that two moving contacts move when circuit breaker cut-offs; Can effectively prevent the scaling loss of independent a slice moving contact; The effective-current area of contact apparatus can not reduce to guarantee to cut-off afterwards by circuit breaker, thereby promotes the break performance of contact of breaker device and the job stability and the fail safe of whole circuit breaker.

The utility model has the advantages that:

1. the technical scheme of the utility model are very simple; It is not changing original appearance structure of contact of breaker device; And do not influence on the basis of its operating characteristic; Through setting up connector, solved the problem of two asynchronous activities of moving contact when circuit breaker cut-offs, effectively promoted the job stability and the fail safe of the break performance and the whole circuit breaker of circuit breaker contact apparatus.

are this contact of breaker device that provides of the utility model 2., and it need not to do big improvement on the basis of existing contact apparatus, so easy to implement, low cost of manufacture helps improving the competitiveness of product in market.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is the perspective view of existing contact of breaker device;

Fig. 2 is the structural front view of monolithic moving contact among Fig. 1;

Fig. 3 is the perspective view of the utility model;

Fig. 4 is the structural front view of monolithic moving contact among Fig. 3;

Fig. 5 is the independent perspective view of connection stator among Fig. 3.

wherein: 1, trigger device; 1a, moving contact; A, location hole; 2, static contact head device; 3, connect stator; 3a, projection; B, axis hole.

Embodiment

embodiment: specifically combine Fig. 3, Fig. 4, shown in Figure 5 be a kind of embodiment of this contact of breaker device that provides of the utility model; Form by trigger device 1 and static contact head device 2 two parts with the same its of routine techniques; Wherein trigger device specifically is made up of two moving contact 1a; The bottom of these two moving contact 1a all has axis hole B; And be sheathed on the pivot by this axis hole B is coaxial, thereby all can rotate around the axis, with this realize and static contact head device 2 between folding.

The improvement of the utility model is swaying synchronously with realization through connector is fixing between two moving contact 1a.Connector described in the present embodiment specifically is to be located at the middle connection stator 3 of two moving contact 1a, and said connection stator 3 is provided with two projection 3a, corresponding respectively supporting in the location hole A that has on two moving contact 1a with fixing two moving contact 1a.And connect two projection 3a concentrics on the stator 3 described in the present embodiment and be symmetrical set (specifically seeing Fig. 5), and the hole heart of the location hole A on two moving contact 1a overlaps.

the utility model is fixed together two moving contact 1a through connector; Guarantee the consistency that two moving contact 1a move when circuit breaker cut-offs; Can effectively prevent the scaling loss of independent a slice moving contact 1a; The effective-current area of contact apparatus can not reduce to guarantee to cut-off afterwards by circuit breaker, thereby promotes the break performance of contact of breaker device and the job stability and the fail safe of whole circuit breaker.

the foregoing description certainly only are the technical conceive and the characteristics of explanation the utility model; Its purpose is to let the people who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection range of the utility model with this.All modifications of doing according to the spirit of the utility model main technical schemes all should be encompassed within the protection range of the utility model.

Claims

1. a contact of breaker device comprises trigger device (1) and static contact head device (2), and said trigger device (1) comprises two moving contacts (1a) of coaxial pivot joint; It is characterized in that between said two moving contacts (1a) fixing to sway synchronously through connector.

2. contact of breaker device according to claim 1; It is characterized in that said connector is to be located at the middle connection stator (3) of two moving contacts (1a); Said connection stator (3) is provided with two projections (3a), and correspondence is supported in the location hole (A) that has on two moving contacts (1a) with fixing two moving contacts (1a) respectively.

3. contact of breaker device according to claim 2 is characterized in that two projection (3a) concentrics on the said connection stator (3) and is symmetrical set, and the hole heart of the location hole (A) on two moving contacts (1a) overlaps.

4. contact of breaker device according to claim 1 is characterized in that said connector is screw or bolt.