Anti-collision travel switch

Abstract

The invention discloses an anti-collision travel switch, which comprises a main box body, an over-travel sliding mechanism is arranged in the main box body, a lever transmission seat is fixed on the upper end surface of the main box body, and an anti-collision mechanism is arranged in the lever transmission seat; according to the invention, through the over-travel sliding mechanism, when the movable contact touches the normally open contact, if the lever continues to rotate, the movable contact and the sliding connecting rod automatically slide relative to each other, so that the sliding connecting rod continues to move downwards, and the movable contact is kept at a position in which the movable contact touches the normally open contact, so that mechanical parts in the travel switch are prevented from being damaged due to excessive overtravel of the lever; meanwhile, by means of the anti-collision mechanism, when the lever is impacted quickly, the inclined plane sliding block moves outwards, so that the inclined plane sliding block moves backwards along the inner wall of the toothed inclined plane cavity until the inclined plane sliding block is disengaged from the inner wall of the toothed inclined plane cavity. And the lever fixing shaft and the annular gear idle, so that damage to mechanical parts on the inner wall caused by collision of the travel switch is avoided.

Description

technical field [0001] The invention relates to the technical field related to travel switches, in particular to an anti-collision travel switch. Background technique [0002] The limit switch is an electric switch that uses the collision of the production mechanical moving parts to make the contact move to realize the connection or break of the control circuit and achieve a certain control purpose. The general structure of the current travel switch is relatively simple, which only plays the role of the control circuit. In daily use, the travel switch often needs some moving parts to push the lever on the switch to make it trigger. If the contacts in the switch are not in good contact If the limit switch fails, when the moving part pushes the lever on the switch, the limit switch cannot control the circuit to make a corresponding action, then the moving part may continue to push the lever of the limit switch, causing the lever action to exceed the stroke, resulting in damage...

AI Technical Summary

Problems solved by technology

The general structure of the current travel switch is relatively simple, which only plays the role of the control circuit. In daily use, the travel switch often needs some moving parts to push the lever on the switch to make it trigger. If the contacts in the switch are not in good contact If the limit switch fails, when the moving part pushes the lever on the switch, the limit switch cannot control the circuit to make a corresponding action, then the moving part may continue to push the lever of the limit switch, causing the lever action to exceed the stroke, resulting in damage to the limit switch; At the same time, if the moving parts move faster, the moving parts are prone to impact when they contact the lever on the travel switch, and it is very easy to cause damage to the mechanical parts of the travel switch during the long-term movement.

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