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Mechanical tripping cam for circuit breaker

A circuit breaker and tripping technology, which is applied in the direction of circuit breaker contacts, circuit breaker parts, overload protection circuit breakers, etc., can solve the problem of not having enough space to accommodate the operating spring, etc., and achieve the effect of increasing the opening distance

Inactive Publication Date: 2006-01-18
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A typical problem is that there is not enough room for a suitable operating spring to generate enough energy to quickly open the breaker contacts when the operating mechanism is opened

Method used

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  • Mechanical tripping cam for circuit breaker
  • Mechanical tripping cam for circuit breaker
  • Mechanical tripping cam for circuit breaker

Examples

Experimental program
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Embodiment Construction

[0023] In a recommended embodiment of the present invention, a circuit breaker 20 is introduced with reference to FIG. 1 and FIG. 2 . The circuit breaker 20 generally includes an injection molded box having a top cover 22 attached to a middle cover 24 which mates with a bottom plate 26 . An opening 28, generally formed in the central portion of the top cover 22, mates with a corresponding middle cover opening 30, the opening 30 being aligned with the opening 28 when the middle cover 24 and top cover 22 are mated to each other.

[0024] In a 3-pole system (ie corresponding to a three-phase current), three rotating boxes 32 , 34 and 36 are accommodated in base plate 26 . Cassettes 32 , 34 and 36 are collectively manipulated by an interface between operating mechanism 38 via a crosshead pin 40 . An operating mechanism 38 is located atop a box 34 generally located between boxes 32 and 36 . Operation of the operating mechanism 38 is as described in US Patent Application No. 09 / 19...

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PUM

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Abstract

A circuit breaker operating mechanism for separating a pair of electrical contacts within an electrical circuit breaker includes a lower link operatively connected to one of the electrical contacts. An upper link includes first and second legs extending from a central portion. The first leg is pivotally secured to the lower link, and the second leg includes a cam surface formed thereon. A roller is in intimate contact with the cam surface, and the cam surface is configured such that movement of the upper link relative to the roller causes the upper link to pivot about the central portion. Pivoting of the upper link about the central portion moves the lower link causing the second contact to move away from the first contact. A mechanism spring is configured to provide a force for separating the electrical contacts when the operating mechanism is tripped. A toggle handle includes a void disposed therein, and an end of the spring is secured to the operating handle within the void.

Description

[0001] This application is a serial application of U.S. Patent Application No. 09 / 516,475 (British Abstract No. 41PR-7700) filed March 1, 2001, entitled "Circuit Interrupter Operating Mechanism", the full text of which is at It is used as a reference in the present invention. This application also incorporates in beneficial portions US Provisional Patent Application No. 60 / 190,180, filed March 17, 2001, the entirety of which is also incorporated herein by reference. technical field [0002] The present invention relates to a circuit interrupter, in particular to a circuit interrupter operating mechanism. Background technique [0003] Circuit interrupter operating mechanisms are used to manually control the opening and closing of movable contact structures within the circuit interrupter. Furthermore, in response to a break signal, eg from a regulator, the operating mechanisms will rapidly open the movable contact struct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H71/50H01H71/52H01H73/04
CPCH01H71/525H01H1/2041H01H73/045H01H1/2058
Inventor R·N·卡斯顿奎D·S·克里斯藤森
Owner ABB (SCHWEIZ) AG
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