CN205028874U - Moulded case circuit breaker contact means - Google Patents

Abstract

The utility model discloses a contact device for a molded case circuit breaker, which is characterized in that it comprises a moving contact and a copper clip, the moving contact and the copper clip are hinged together through a first rotating shaft, and the end of the moving contact clips Inside the copper clip, gaskets are provided at both ends of the first rotating shaft, and a torsion spring is arranged between the gasket and the copper clip. One end of the torsion spring is connected to the inside of the gasket, and the other end is connected to the copper clip. A support is provided below the moving contact, and a second rotating shaft is pierced inside the support. A compression spring is connected to one side of the support. Under the action of the compression spring, the support can wrap around The second shaft rotates. Preferably: it also includes a rotating shaft casing sheathed on the outside. The utility model has the beneficial effects of reducing parts, facilitating production and assembly, and improving efficiency.

Description

Contact device for molded case circuit breaker

technical field

The utility model relates to the technical field of low-voltage electrical appliances, in particular to a contact device for a molded case circuit breaker.

Background technique

A circuit breaker is a switching device that can carry and break current under normal circuit conditions, and can also carry and break current under abnormal circuit conditions within a specified time. The contact system is one of the most important components of the circuit breaker. The contact system of the existing circuit breaker has many parts, complex structure and slow production efficiency.

Utility model content

The purpose of the utility model is to provide a contact device of a molded case circuit breaker with a simpler structure in order to make up for the deficiencies of the prior art.

In order to achieve the purpose of this utility model, technical scheme is as follows:

A contact device for a molded case circuit breaker, characterized in that it includes a moving contact and a copper clip, the moving contact and the copper clip are hinged together through a first rotating shaft, and the end of the moving contact is clamped by the copper clip Inside, gaskets are provided at both ends of the first rotating shaft, and a torsion spring is arranged between the gasket and the copper clip. One end of the torsion spring is connected to the inner side of the gasket, and the other end is connected to the copper clip.

A support is provided below the movable contact, and a second rotating shaft is pierced inside the support. A compression spring is connected to one side of the support. Under the action of the compression spring, the support can wrap around The second shaft rotates.

Preferably: it also includes a rotating shaft casing sheathed on the outside.

Preferably: the moving contact is provided with a third rotating shaft, and both ends of the third rotating shaft are connected with the rotating shaft housing.

Preferably: the first rotating shaft, the washer, the torsion spring, the second rotating shaft, the compression spring and the third rotating shaft are all located inside the rotating shaft casing.

The beneficial effect that the utility model has:

Reduce parts, facilitate production and assembly, and improve efficiency.

Description of drawings

Fig. 1 and Fig. 2 are schematic diagrams of the structure of the contact device of the molded case circuit breaker of the present invention.

Fig. 3 is a schematic diagram of the structure of Fig. 2 after the rotating shaft housing is installed.

detailed description

The utility model will be further described below in conjunction with the examples, but the protection scope of the utility model is not only limited to the examples.

As shown in Figure 1, Figure 2 and Figure 3, a molded case circuit breaker contact device includes a moving contact 5 and a copper clip 3, and the moving contact 5 and copper clip 3 are hinged together through a first rotating shaft 2 , the end of the movable contact 5 is clamped inside the copper clip 3 , and the two ends of the first rotating shaft 2 are provided with gaskets 10 , and the gasket 10 is fixedly connected with the first rotating shaft 2 . A torsion spring 7 is arranged between the washer 10 and the copper clip 3 , one end of the torsion spring 7 is connected to the inside of the washer 10 , and the other end is connected to the copper clip 3 . The movable contact 5 can rotate around the first rotating shaft 2 , and the rotating power can be provided by the torsion spring 7 , the active force of the torsion spring 7 makes the first rotating shaft 2 rotate, and then the movable contact 5 rotates around the first rotating shaft 2 .

Below the moving contact 5 is provided a support 8, the support 8 is pierced with a second rotating shaft 1, one side of the support 8 is connected with a compression spring 4, under the action of the compression spring 4, the support 8 can Rotating around the second rotating shaft 1 , the compression spring 4 provides the power required for the rotation of the support member 8 .

The entire contact device also includes a rotating shaft housing 6 sheathed on the outside. The movable contact 5 is provided with a third rotating shaft 9 , and both ends of the third rotating shaft 9 are connected to the rotating shaft housing 6 . The first rotating shaft 2 , the washer 10 , the torsion spring 7 , the second rotating shaft 1 , the compression spring 4 and the third rotating shaft 9 are all located inside the rotating shaft housing.

Finally, it should be noted that: the above embodiments are only used to illustrate the utility model rather than limit the technical solution described in the utility model, therefore, although the description has described the utility model in detail with reference to the above-mentioned various embodiments, but Those of ordinary skill in the art should understand that the utility model can still be modified or equivalently replaced, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model should be covered by the claims of the utility model in range.

Claims (4)

1. A contact device for a molded case circuit breaker, characterized in that it includes a moving contact (5) and a copper clip (3), the moving contact and the copper clip are hinged together through a first rotating shaft (2), and the moving contact The end of the contact is clamped inside the copper clip, the two ends of the first rotating shaft are provided with gaskets (10), and a torsion spring (7) is arranged between the gasket and the copper clip, and one end of the torsion spring is connected to the copper clip. The inside of the gasket is connected, and the other end is connected with the copper clip, A support (8) is provided below the movable contact, and a second rotating shaft (1) is pierced in the support, and a compression spring (4) is connected to one side of the support, and under the action of the compression spring Next, the supporting member can rotate around the second rotating shaft. 2. A contact device for a molded case circuit breaker according to claim 1, characterized in that it further comprises a rotating shaft casing (6) sheathed on the outside. 3. A molded case circuit breaker contact device according to claim 2, characterized in that: said movable contact is provided with a third rotating shaft (9), and the two ends of said third rotating shaft are connected to said rotating shaft Shell connection. 4. A molded case circuit breaker contact device according to claim 3, characterized in that: the first rotating shaft (2), the gasket (10), the torsion spring (7), the second rotating shaft (1), the compression Both the spring (4) and the third rotating shaft (9) are located inside the rotating shaft housing.