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External operation handle

A technology for operating handles and handles, applied in the direction of contact operating parts, electrical components, electric switches, etc., can solve the problems of complex design, high cost, and difficulty in meeting the needs of dustproof and waterproof effects, so as to reduce production costs and ensure reliability sexual effect

Pending Publication Date: 2018-07-10
ZHEJIANG CHINT ELECTRIC CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing emergency release device of the external operating handle is not only complicated in design, has many parts, and high cost, but also the dustproof and waterproof effect is difficult to meet the demand

Method used

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specific Embodiment approach

[0113] The external operating handle device of the present invention includes a casing 120, a handle part 300, a limiting part 310, a base 110, a threaded sleeve 130, a linkage part 410, a locking part 420, an unlocking part 430, and a T-shaped casing sealing ring 124. , locking spring 433, limiting spring 312, linkage sealing ring 417, unlocking sealing ring 437, limiting guide shaft 316a, etc., and the external operating handle device can drive the switching device 3 in two positions: closed (ON) and closed (OFF). Switching is performed in order to realize the operation of the switching device 3 . The linkage part 410 passes through the linkage bottom hole 1211 of the casing 120 and is fixedly connected with the handle part 300 through the combination screw 415. By operating the handle part 300, the linkage part 410 can be driven to rotate around the central axis of the casing 120, that is, the handle cover 320 The curved surface on the outside of the cover wall 321 of the c...

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Abstract

An external operation handle comprises a coupling shaft connected with a switch electric appliance and a linkage member connected to the connecting shaft. The linkage member is arranged in a casing, the top side of the casing is provided with a handle member connected to the linkage member, the bottom side of the linkage member is provided with a linkage shaft groove in sliding fit to the couplingshaft, a linkage keyway in sliding fit to a connecting key on the coupling shaft is arranged in the linkage shaft groove, a movable locking piece and an unlocking piece connected with the locking piece are arranged under the linkage member, the locking piece is provided with a locking shaft hole corresponding to the linkage shaft groove, a locking key hole corresponding to the linkage keyway is arranged in the locking shaft hole, and the unlocking piece can drive the locking piece to move so that the locking key hole is offset from or overlapped with the linkage keyway. The bottom side of thelinkage member is provided with the locking piece in cooperation with the connecting key, so that a locking mechanism can lock or release, in emergency, the coupling shaft via a simple structure, itis not required to prepare other structures on the coupling shaft, the manufacturing cost is reduced, the reliability of the coupling shaft is ensured.

Description

technical field [0001] The invention relates to the field of low-voltage electrical appliances, in particular to an external operating handle. Background technique [0002] At present, external operating handles are widely used for manual operation of switching appliances such as circuit breakers, which can be directly installed on the switching appliances in the switch cabinet, or installed on the cabinet door of the switch cabinet through a connecting shaft. The external operating handle generally passes through a connecting shaft. One end of the shaft can be fixedly connected to the switching device, and the other end is fixedly connected to the handle device, so as to realize the operation of the rotary handle device to switch the switching device from the off position to the closed position. In addition, in some occasions (such as maintenance), the user needs to lock the rotary handle to the off position, and the handle device can be locked to the off device through a p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H3/08H01H9/20
CPCH01H3/08H01H9/20
Inventor 葛江波胡吉庆
Owner ZHEJIANG CHINT ELECTRIC CO LTD
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