CN202712087U

CN202712087U - Anti-closing device of universal type low-voltage circuit breaker

Info

Publication number: CN202712087U
Application number: CN 201220283815
Authority: CN
Inventors: 刘国军
Original assignee: Hangzhou Zhijiang Switchgear Stock Co Ltd
Current assignee: Hangzhou Zhijiang Switchgear Stock Co Ltd
Priority date: 2012-06-11
Filing date: 2012-06-11
Publication date: 2013-01-30
Anticipated expiration: 2022-06-11

Abstract

The utility model discloses an anti-closing device of a universal type low-voltage circuit breaker, which comprises a pressing rod, a pivot pin seat, a pivot pin and a torsion spring. The anti-closing device is characterized in that the pivot pin seat is arranged on the base of a controller. The pressing rod and the torsion spring are arranged on the pivot pin seat through a pivot pin. The end portion of the pressing rod is provided with a boss. The boss is supported against the pressing rod, so that a tripping push rod can move up and down. In this way, the normal switching-on and switching-off of the circuit breaker can be ensured. When the controller is detached from the device, the boss is detached from the device together with the controller. Under the action of the torsion spring, the pressing rod is pressed downwards so as to drive the tripping push rod to move downwards. In such a situation, even the switching-on button of the low-voltage circuit breaker is pressed down, the circuit breaker cannot be switched on. Thus, the false switching problem of the universal type low-voltage circuit breaker, which may come along during the failure maintenance process, is effectively prevented.

Description

The universal low-voltage circuit breaker is prevented closing device

Technical field

The utility model relates to a kind of device that occurs false switching when preventing the breakdown maintenance of universal low-voltage circuit breaker, belongs to low-voltage electrical apparatus manufacturing technology field.

Background technology

Intelligent controller is the brain of universal low-voltage circuit breaker, is the core that circuit breaker is realized defencive function.It is comprised of pedestal (mechanical operating part) and control box (electronic control part) two parts.When breaking down, control box needs repairing or when changing, circuit breaker can temporarily lose defencive function.For preventing that circuit breaker from breaking down, the false switching phenomenon that may occur when maintenance is provided with a kind of anti-error closing device usually in circuit breaker.The primary structure of this anti-error closing device as shown in Figure 1, it by jump ring 1, dropout push rod 2, pull bar 3, keeper 4,6 and stage clip 5 consisted of, in normal operation, control box upwards withstands pull bar 3, at this moment, dropout push rod 2 can rotate, and circuit breaker is separating brake, combined floodgate normally; When circuit breaker needed repairing or changes, control box also need disassemble, at this moment, because the effect of stage clip 5 pulls down pull bar 3, drive dropout push rod 2 and also pull down, at this moment, even press " closing switch " of circuit breaker, circuit breaker can not close a floodgate (seeing Fig. 2).This breaker misoperation-preventing closing device complex structure, assembly precision requires high, and particularly pull bar 3 is because more elongated, and the centre has and boss, and difficulty of processing is very big.

Summary of the invention

In view of the problem of above-mentioned existence, the purpose of this utility model provide a kind of simple in structure, make the anti-closing device of universal low-voltage circuit breaker easy, easy for installation, dependable performance.

For achieving the above object, the utility model has been taked following technical scheme:

A kind of universal low-voltage circuit breaker described in the utility model is prevented closing device, formed by depression bar, pivot pin seat, pivot pin, torsion spring, it is characterized in that: the pivot pin seat is arranged on the pedestal of controller, depression bar and torsion spring are installed on the pivot pin seat by pivot pin, and the end at depression bar is provided with boss, boss withstands depression bar, make the dropout push rod can be up and down, like this, can guarantee the normal separating brake of circuit breaker, combined floodgate.When controller disassembles, boss disassembles thereupon, depression bar under the effect of torsion spring to pressing down, drive the dropout push rod downward, in this case, even press " switch knob " of circuit breaker, circuit breaker can not close a floodgate, thereby effectively prevents the false switching problem that the universal low-voltage circuit breaker may occur when breakdown maintenance.

Description of drawings

Fig. 1 is the structural representation of the anti-closing device of existing circuit breaker

Fig. 2 is the working state figure of the anti-closing device of existing circuit breaker

Fig. 3 is structural representation of the present utility model

Fig. 4 is the structural representation of the utility model under anti-"on" position

Wherein: 1-jump ring 2-dropout push rod 3-pull bar 4,6-keeper 5-stage clip 7-boss 8-depression bar 9-pivot pin seat 10-pivot pin 11-torsion spring

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail, but be not the restriction to the utility model protection range.

As shown in Figure 3, Figure 4, a kind of universal low-voltage circuit breaker described in the utility model is prevented closing device, be comprised of depression bar 8, pivot pin seat 9, pivot pin 10, torsion spring 11, pivot pin seat 9 is arranged on the pedestal of controller, and depression bar 8 and torsion spring 11 are installed on the pivot pin seat 9 by pivot pin 10, end at depression bar 8, be provided with boss 7, boss 7 withstands depression bar 8, makes the dropout push rod 2 can be up and down, like this, can guarantee the normal separating brake of circuit breaker, combined floodgate.When controller disassembles, boss 7 also disassembles thereupon, at this moment, depression bar 8 under the effect of torsion spring 11 to pressing down, drive dropout push rod 2 downward, in this case, even press " switch knob " of circuit breaker, circuit breaker can not close a floodgate, thereby effectively prevents the false switching problem that the universal low-voltage circuit breaker may occur when breakdown maintenance.

Claims

1. a universal low-voltage circuit breaker is prevented closing device, formed by depression bar, pivot pin seat, pivot pin, torsion spring, it is characterized in that: the pivot pin seat is arranged on the pedestal of controller, depression bar and torsion spring are installed on the pivot pin seat by pivot pin, end at depression bar, be provided with boss, boss withstands depression bar, makes the dropout push rod can be up and down.