Key displacement card table, high-current power switch and using method thereof

Abstract

The invention discloses a key displacement card table, a high-current power switch and a method for using the same. The displacement card table includes a semicircular tube or a semi-arc tube, and one end of the card table is provided with switches corresponding to the key open state and the closed state respectively. Two curved grooves with unequal heights. The high-current power switch includes a switch key, a switch body, a moving contact and a static contact in the switch body, a push rod that makes the moving contact contact with the static contact, and a spring that separates the moving contact from the static contact. The main body of the switch includes an upper shell and a lower shell. A vertical pipe upward and connected to the cavity of the lower shell is provided at the center of the upper shell. The inner wall of the vertical pipe is provided with a key displacement card table and a chute for the installation position. The switch key includes a handle at the upper end and a key rod at the lower end, and the two sides of the lower part of the key rod are provided with positioning chucks corresponding to the installation position chute and two arc-shaped grooves. The present invention is simple in structure, and the switch state key can not drop, and the switch key can be installed and removed at will.

Description

technical field [0001] The invention relates to the technical field of power switches, in particular to a key displacement card table, a high-current power switch and a use method thereof. Background technique [0002] According to market demand, the high-current power switch is required to have the following functions. When the key is used in the normal "switch" state, the key cannot fall off. When you want to remove the key, the key can be easily removed without affecting the re-installation and use. . [0003] There are two technical solutions for the key switch in use to meet the above requirements: [0004] 1. A connection belt is added between the switch key and the housing. One end of the connection belt is set on the housing, and the other end is buckled on the handle, so that the handle will not be lost due to being pulled by the connection belt when it is in the "off" state. But the disadvantage is that when the switch is in the "off" state, you don't want the ha...

AI Technical Summary

Problems solved by technology

[0006] 1. When installing the circlip on the upper casing, it is necessary to punch holes in the upper casing first, and debris will easily fall into the main body of the switch when punching holes, resulting in failure of the switch performance;

[0007] 2. When you want to remove the key, you need to borrow a tool to loosen the circlip to remove the key, which is time-consuming and laborious;

[0008] 3. When installing the handle, pull the handle with great force, the circlip is easily bent and deformed and damaged, and it will not be able to play the role of the card master key lever when it is installed again

[0009] The switches and handles produced by domestic switch manufacturers cannot realize the closed state without disassembling the case. The key does not fall off, and the key can be installed and removed arbitrarily.

[0010] Foreign key switches, such as those used by a German factory, have the function of arbitrarily installing and removing the handle, but its principle is that there is a circle of ribs on the inner wall of the shell, and the key can be caught on the key rod after the key is pushed in so that the key Can't come out. When you want to remove the key, first put the key in the "off" state, and pull the key hard to remove the key, but the disadvantage is that after pushing and pulling the key many times, the ribs are easy to be worn, and eventually the ribs are worn out And make the function of locking the key lever invalid

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