Telescopic explosion-proof switch handle

Abstract

The invention relates to a telescopic explosion-proof switch handle. The switch handle comprises a handle hub, a handle and a handle bar, wherein a threaded hole connected with the handle is formed in the middle of the handle hub; a plurality of grooves are formed in one side, close to the handle, of the inner wall of the threaded hole; the outer wall of the handle is thread-shaped and is in threaded fit with the threaded hole; a plurality of cavities are annularly distributed in one end part, arranged in the threaded hole, of the handle along a side wall; the bottom ends of the cavities are connected with compression springs; the other ends of the compression springs are connected with tungsten steel bumps; the tungsten steel bumps are matched with the grooves in an insertion manner and are arranged in a direction perpendicular to a long axis of the handle; and the handle is vertically fixed to the end part of one side, far away from the handle hub, of the handle by utilizing a bolt. The telescopic explosion-proof switch handle has the advantages that the telescopic motion is realized through the handle with a knob connected with the handle hub; when the switch handle extends to the outermost side, the compression springs enable the tungsten steel bumps to be bounced in the grooves, the handle is fixed, and at the moment, the handle bar is rotated to operate a switch; and meanwhile, tungsten steel is good in anti-torque effect and long in structure life.

Description

Technical field

[0001] The invention relates to a switch handle, in particular to a telescopic explosion-proof switch handle. Background technique

[0002] Explosion-proof switch is one of the indispensable electrical appliances on explosion-proof electrical appliances. In order to prevent the handle on the explosion-proof switch from hindering the work of the electrical appliance, the handle is generally retracted inside the switch box body. At this time, it causes certain difficulties for the knob handle, and at the same time, it is necessary to rotate the handle. A certain force is extremely inconvenient to operate. Therefore, it is urgent to develop a telescopic explosion-proof switch handle that does not affect the work and can be rotated conveniently. After searching, no technical solution identical or similar to the present invention was found. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a telescopic explosion-...

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