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Bimetal protection device and circuit breaker

A protection device, bimetal technology, applied in circuit breaker parts, circuit breaker contacts, protection switch operation/release mechanism, etc. Longevity, the effect of guaranteeing the feel

Pending Publication Date: 2020-07-24
ZHEJIANG TENGEN ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the bimetal sheet of the double gold protection device in the prior art is inconvenient to adjust, thereby providing a double gold protection device and a circuit breaker with the double gold protection device

Method used

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  • Bimetal protection device and circuit breaker
  • Bimetal protection device and circuit breaker
  • Bimetal protection device and circuit breaker

Examples

Experimental program
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Effect test

Embodiment 1

[0045] This embodiment provides a specific implementation of a double gold protection device. The double gold protection device drives its operating mechanism to trip when the electric switch device is in an abnormal state. Specifically, when the current in the electric switch device is overloaded, it is set at The double gold protection device in the electric switchgear is affected by the current, and can drive the operating mechanism in the electric switchgear to perform power-off operation. In practical applications, such as circuit breakers and other switching devices for power protection.

[0046] Such as figure 1 , figure 2As shown, the bimetal protective device provided in this embodiment includes: a bimetal 1 , a support spring 2 and a static contact 3 respectively connected to the bimetal 1 . The bimetal 1 is suitable for being arranged in the housing 14 of the electric switchgear. One end of the bimetal 1 is a connection end, and the other end is a free end 4. Whe...

Embodiment 2

[0057] This embodiment provides a specific implementation of a circuit breaker, such as Figure 4 , Figure 5 As shown, it includes: the double gold protection device described in Embodiment 1, the double gold protection device is arranged in the housing 14 of the circuit breaker, and the housing 14 also has a moving contact 15, the moving contact 15 Set opposite to the static contact 3 of the double gold protection device.

[0058] There is an operating mechanism inside the housing 14 of the circuit breaker, the operating mechanism has a latch 16 , and the operating mechanism performs contact and separation of the moving contact 15 and the static contact 3 through the rotation of the latch 16 .

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Abstract

The invention provides a bimetallic protection device and a circuit breaker, and belongs to the technical field of circuit breakers. The bimetallic protection device comprises a bimetallic strip and asupporting elastic piece, wherein the bimetallic strip is suitable for being arranged in a housing of an electric switching device, one end of the bimetallic strip is a connecting end, the other endof the bimetallic strip is a free end, and the connecting end is suitable for being connected with a static contact of the electric switching device; and the supporting elastic piece is a bent structure and is provided with a supporting arm used for being connected into the shell and an adjusting arm used for being connected with the connecting end of the bimetallic strip, and a distance between the adjusting arm and the supporting arm is suitable for being adjusted through an adjusting screw. According to the bimetal protection device, the connecting end of the bimetallic strip is connected with the housing through the supporting elastic sheet, and when an angle position of the bimetallic strip is adjusted, a bending angle of the supporting elastic sheet is adjusted so that an angle position of the bimetallic strip can be adjusted more conveniently by improving elasticity of the supporting elastic sheet on the premise of ensuring conductivity of the bimetallic strip.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a double gold protection device and a circuit breaker. Background technique [0002] A circuit breaker is a switching device that can carry and break current under abnormal circuit conditions within a specified time. Inside the circuit breaker, there are moving contacts and static contacts that can perform on-off operations. The contacts are driven by the operating mechanism. [0003] In the circuit breaker, the double gold protection device is used for overload protection. The double gold protection device has a bimetal sheet that can be deformed by heat. The metal sheet is heated and deformed toward the operating mechanism, thereby driving the operating mechanism to disconnect the moving contact from the static contact. The bimetal is installed in the housing of the circuit breaker, and its position and angle need to be adjusted so that when overload occurs, the bime...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/16H01H73/04
CPCH01H71/16H01H73/04
Inventor 史克少张彦阳宿彦荣王斌任昌宾
Owner ZHEJIANG TENGEN ELECTRIC
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