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Directly-pushing residual current action tripping mechanism

A technology of residual current and tripping mechanism, applied in the direction of protection switch operation/release mechanism, etc., can solve the problems of high manufacturing cost, high requirements on dimensional accuracy of parts, complex structure, etc., and achieve improved electromechanical life, sensitive and reliable tripping. , the effect of reducing friction

Inactive Publication Date: 2008-08-27
ZHEJIANG CHINT ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The general structure of the tripping mechanism of this structure is relatively complex, and the dimensional accuracy of the parts is required to be high, so the manufacturing cost of the product is also high.

Method used

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  • Directly-pushing residual current action tripping mechanism
  • Directly-pushing residual current action tripping mechanism
  • Directly-pushing residual current action tripping mechanism

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0013] refer to figure 1 , 2 , a direct push type residual current action release mechanism, including a coil assembly generating driving force, a push rod 3 and a push rod, the push rod 6 is pivotally connected to the housing 9 and has a downward fan-shaped arm 14 and a second upward arm 11. One side of the fan-shaped arm 14 is provided with a boss 15 opposite to the ejector rod, and the back of the other side is provided with a connecting rod 13 linked with the circuit breaker operating mechanism. The housing 9 is provided with a connecting rod accommodating slot 10, the connecting rod accommodating slot 10 is a section of arc-shaped slot with the rotating shaft 5 of the push rod as the center, and the connecting rod 13 and the accommodating The through groove 10 adopts a clearance fit, so that the connecting rod can move to a limited extent in the groove, and the length of the through groove is just in time for a working stroke of the connecting rod. A return spring 4 is...

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PUM

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Abstract

The tripping mechanism includes a coil kit, a post rod and a push rod. The said push rod coupled on body case possesses first arm cooperated with the post rod. A connecting rod interlocked with operating mechanism of breaker is set up at first arm. There is also a reset spring on the push rod. When residual current produces in circuit, electromagnetic field generated in coil kit drives movement of the post rod, and drives the push rod rotation around axis. The connecting rod drives operating mechanism for tripping action. There is no mechanism of amplification in the invention. Thus, there is no additional abrasion so as to raise electromechanical lifetime and lower cost. Comparing with tripping mechanism in straight pushing mode, rotation structure is adopted in the push rod. Thus, friction force is reduced greatly so that tripping operation is more sensitive and reliable.

Description

technical field [0001] The invention relates to a residual current action tripping mechanism of a low-voltage small plastic shell type residual current action circuit breaker, specifically a direct push type residual current action tripping mechanism, whose function is to The fulcrum of the operating mechanism of the circuit breaker in the closed state collapses to disconnect the circuit breaker, which plays the role of circuit breaker protection. Background technique [0002] Generally, the tripping mechanism of a circuit breaker with residual current protection includes a driving device and a needle bar. The drive device includes an electromagnetic release that generates drive force and a mechanism that transmits and amplifies the drive force. When the residual current exceeds the specified value, the electromagnetic tripper operates, and the driving force generated by the ejector rod is transmitted to the needle bar through the driving force amplification mechanism, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H71/12H01H71/24
Inventor 王仁远许春方高善春
Owner ZHEJIANG CHINT ELECTRIC CO LTD