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Thermal trip actuating mechanism of air circuit breaker

An air circuit breaker and actuating mechanism technology, applied in the protection switch operation/release mechanism and other directions, can solve the problems of complex transmission mechanism, complex transmission mechanism, and high manufacturing cost, and achieve simple displacement transmission trajectory, shortened escape time, and high manufacturing cost. cost reduction effect

Active Publication Date: 2012-12-12
DELIXI ELECTRIC
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  • Abstract
  • Description
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Problems solved by technology

However, the transmission of the transmission mechanism disclosed by it is still relatively complicated. In order to realize tripping, the bimetal strip first touches the buckle after bending and deforming, and then the buckle rotates to transfer the displacement to the lock, and the lock transfers the displacement by rotation. Give a jump button, after the jump button is triggered, the operating mechanism will be tripped
Since the transmission mechanism is still relatively complex, the manufacturing cost is still relatively high, the tripping time is still relatively long, and there is also a large room for improvement in stability.

Method used

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  • Thermal trip actuating mechanism of air circuit breaker
  • Thermal trip actuating mechanism of air circuit breaker
  • Thermal trip actuating mechanism of air circuit breaker

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Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0030] Such as figure 1 Shown is a structural diagram of the thermal trip actuation mechanism of the present invention. The thermal trip actuation mechanism of the air circuit breaker includes four bimetal actuation mechanisms corresponding to the number of four monitored circuits, each of which has a conductive element 1 fixed on the machine The shell 5 also has a bimetallic strip 2, the bimetallic strip 2 has a fixed end 21 fixed on the conductive element, and a trigger end 22 bent and deformed by being heated by the conductive element.

[0031] In this embodiment, the thermal trip actuation mechanism further includes a displacement transmission part 3, which is rotatably arranged on the casing 5 and has a displacement transmission ...

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Abstract

A thermal trip actuating mechanism of an air circuit breaker comprises a plurality of bimetallic strip actuating mechanisms corresponding to monitoring circuits in number, a displacement drive part, a return spring and a micro switch, wherein each bimetallic strip actuating mechanism comprises a conducting element and a bimetallic strip. A drive mechanism only comprising the displacement drive part and the micro switch is greatly simplified, trip time is obviously shortened, manufacturing cost is also lowered, and mechanism stability is also improved.

Description

technical field [0001] The invention relates to a thermal trip actuation mechanism, in particular to a thermal trip actuation mechanism for an air circuit breaker. Background technique [0002] Thermal releases are widely used in various air circuit breakers. For thermal trippers of the current overload protection type, the transmission mechanism is generally more complicated, and often requires two or even three stages of transmission to achieve tripping. For example, Chinese patent document CN101685729A discloses a two-stage transmission mechanism, including an operating mechanism, a bracket for installing the operating mechanism, a lock mounted on the bracket through a lock shaft, and a jumper matched with the lock. It also includes a pinch plate, and the pinch plate is installed on the support through the pinch plate shaft. [0003] Although the Chinese patent document CN101685729A has simplified the existing three-stage transmission mechanism by omitting the independe...

Claims

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Application Information

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IPC IPC(8): H01H71/16
Inventor 殷炳忠陈百胜周艳华
Owner DELIXI ELECTRIC
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