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Operating mechanism of miniature circuit breaker

A technology of small circuit breaker and operating mechanism, applied in the direction of protection switch operation/release mechanism, etc., can solve the problems of large tripping force, increased cost, poor stability, etc., and achieves the effect of less linkage parts, simple structure, and reduced slippage.

Active Publication Date: 2014-11-26
DONGGUAN JIYE ELECTRICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing small circuit breaker operating mechanism has many parts, complex structure and large tripping force, it is easy to slip after frequent operation, and the stability is poor. This kind of operating mechanism not only increases the cost, but also is inconvenient in the production and installation process.

Method used

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  • Operating mechanism of miniature circuit breaker
  • Operating mechanism of miniature circuit breaker
  • Operating mechanism of miniature circuit breaker

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Embodiment Construction

[0048] In order to make the object, technical solution and advantages of the invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0049] see Figure 1 to Figure 6 , an operating mechanism for a small circuit breaker, including a handle 11, a connecting rod 12, a lock 22, a support 23, a drive plate 24, a stopper 21 and a contact arm 25, and also includes a handle shaft 10 and a pivot 20, The handle shaft 10 and the pivot shaft 20 are respectively fixed inside the casing 30 of the miniature circuit breaker;

[0050] The handle 11 is installed on the handle shaft 10, and the drive plate 24 and the support member 23 are successively installed on the pivot shaft 20; the first end of the connecting rod 12 is eccentrically hinged on the handle 11, and the support member 23 is provided There is a connecting rod movement groove 27, and the second end of the connecting rod 12 is limited in t...

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PUM

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Abstract

The invention relates to the technical field of breakers, and particularly relates to an operating mechanism of a miniature circuit breaker. When the miniature circuit breaker is turned on, a second end of a connecting rod moves to the right-most side along a straight groove; a second stopping arm of a stopping piece restricts the second end of the connecting rod from sliding into an arc-shaped groove section; the second end of the connecting rod pushes a supporting piece to move around a pivot, and simultaneously, the supporting piece drives a driver board to move, and a moving contact of a contact arm is contacted with a static contact of the miniature circuit breaker; and when an electromagnetic release device pushes a touch boss, the second end of a lock catch moves rightwards, a limiting column of the stopping piece moves to the lower end of the arc-shaped groove section, the second end of the connecting rod moves into the arc-shaped groove section from the straight groove section, at this time, the pressure of a handle is released, the handle moves leftwards, the second end of the connecting rod moves to the left-most end of the straight groove section from the arc-shaped groove section and drives the supporting piece to move anticlockwise along the pivot, and the moving contact is disconnected from the static contact. The operating mechanism of the miniature circuit breaker is simple in structure, relatively low in cost and better in stability.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to an operating mechanism of a small circuit breaker. Background technique [0002] A miniature circuit breaker, also known as an automatic switch, is an electrical appliance that not only has the function of a manual switch, but also can automatically protect against voltage loss, undervoltage, overload, and short circuit. When a serious overload or short circuit occurs in the circuit, the circuit breaker can automatically cut off the circuit. Its function is equivalent to the combination of a fuse switch and an overheating relay, etc., and generally does not need to replace parts after breaking the fault, so it is obtained a wide range of applications. [0003] Miniature circuit breakers are generally composed of thermal magnetic tripping devices, arc extinguishing systems, wiring systems, operating mechanisms, etc. The performance of the operating mechanism directly aff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H71/10
Inventor 匡红勇苏洪新
Owner DONGGUAN JIYE ELECTRICAL EQUIP CO LTD
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