External operation handle device for a circuit breaker

Abstract

To incorporate an assisting system of a simple structure into an external operation handle device, and make the handle knob move to the TRIP display position surely during a tripping movement of a circuit breaker. In an external operation handle device which becomes an assembling structure with a rotary type handle knob 4 on a mounting base 3, a turn base 5 coupled with the handle knob via a coupling shaft, and a slide base 6 linked to the turn base by being engaged with a locker handle 1e of the circuit breaker 1, in the inward of a hollow coupling shaft 9 that couples between the mounting base and the handle knob, an assisting mechanism 14 consisting of a cam body 10 fixed to the mounting base, cam follower 11 coupled with the handle knob and confronted with a cam face 10a of the cam body, and a biasing spring 12 that presses the cam follower to the cam face are installed, while during the tripping movement of the circuit breaker, the handle knob is made to acceleratedly move from ON position to the tripping display position by a rotating force acted on the cam follower in which the spring force of the biasing spring is received.

Description

Technical field [0001] The present invention relates to an external operating handle device used in circuit breakers for wiring circuit breakers, earth leakage circuit breakers, and the like. Background technique [0002] As accessory devices for wiring circuit breakers, earth leakage circuit breakers, etc., there are external operating handle devices that open and close circuit breakers installed in switchboards, control panels, etc. from outside the panel. [0003] The external operation handle device is configured to have a rotary handle handle mounted on a mounting seat, and a sliding seat connected to the handle handle via a rotating seat. When the handle device is assembled to the circuit breaker, the circuit breaker The rocker arm handle of the circuit breaker is engaged with the sliding seat, and the rocker arm handle of the circuit breaker is driven to the ON (turned on) and OFF (cut off) positions through the rotating seat and the sliding seat through the rotating opera...

AI Technical Summary

Problems solved by technology

[0013] However, the existing auxiliary mechanism equipped with the external operating handle device, in addition to the number of parts including the left and right pair of levers 8, rollers 8c, and force spring 8d, and the increase in the assembly workload and the increase in product cost, the mounting base 3 In order to ensure the space occupied by these parts, the external operating handle device is enlarged

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