Screw assembling unit for reliable line-pressing of alternating-current contactor

Abstract

The invention relates to a screw assembling unit for reliable line-pressing of an alternating-current contactor; the screw assembling unit of the alternating-current contactor comprises a stacking clip-type part, a screw and a U-shaped washer plate, an internally-convex hole is arranged at one vertical part of the U-shaped washer plate, and the vertical part is arranged above a stacking screw hole of the clip-type part; a panel with lower tile-shaped plane is arranged at the other vertical part of the U-shaped washer plate, and the other vertical part is arranged in the space surrounded by the clip-type part, and the bottom part of the U-shaped washer plate is arranged at one side of the opening of the clip-type part; the screw is provided with a thin neck and a flat end, and the thin neck of the screw is arranged at the square hole position of the washer plate; three side surfaces of a square hole at the upper part of the washer plate are cold-headered on the screw neck, the screw can rotate in the washer plate and the clip-type part, the washer plate can not be taken off from the screw, the plane of the end of the screw props against to the plane of the lower surface of the washer plate and is connected by the U-shaped side wall and can not fall off and be inclined, so as to lead the crew assembling unit to press line reliably and to work normally.

Description

technical field [0001] The invention belongs to an AC contactor, in particular to a screw assembly for reliable wire crimping of the AC contactor. Background technique [0002] When the screw assembly used in the current known AC contactor is pressing the single-strand copper wire, the tile-shaped washer is squeezed by the screw, causing a large inclination, and the small table at the head of the screw is crushed. When the screw is loosened, The tile washer fell off the screw, so that the screw assembly could not be crimped reliably, and the AC contactor could not work properly. Contents of the invention [0003] In order to solve the technical problems in the known technology, the present invention provides a screw assembly for reliable crimping of an AC contactor which can make the crimping tile-shaped washer not easy to fall off from the screw. [0004] The technical scheme adopted by the present invention for solving the technical problems existing in the known techno...

AI Technical Summary

Problems solved by technology

[0002] When the screw assembly used in the current known AC contactor is pressing the single-strand copper wire, the tile-shaped washer is squeezed by the screw, causing a large inclination, and the small table at the head of the screw is crushed. When the screw is loosened, The tile washer fell off the screw, so that the screw assembly could not be crimped reliably, and the AC contactor could not work properly

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