Contact switch for elevator safety door

Abstract

The invention relates to the field of machinery, in particular to a contact switch. The contact switch for an elevator safety door comprises a contact switch body, the contact switch body comprises ashell and a push rod arranged on one side of the shell, the shell comprises an upper box cover and a lower box body, and the upper box cover is arranged above the lower box body. Through the design, the contact switch for the elevator safety door is provided, is simple in structure and rapid and convenient to use and can be mounted in an existing narrow mounting space of an elevator door motor, the hidden danger of poor connection is reduced, it is ensured that a safe electrical component of an elevator door system is not influenced by the environment and the load, and thus long-term safe operation of the an elevator is ensured.

Description

technical field [0001] The present invention relates to the mechanical field, in particular, to a contact switch. Background technique [0002] The elevator safety door contact switch controls the closing and opening of the elevator car door and elevator landing door to protect the safety of elevator passengers and the normal operation of the elevator. The existing widely used elevator door contact switch has IP20 protection level. Due to the limitation of the elevator door machine structure and installation space, it is impossible to upgrade and replace it with a safety limit switch with a higher protection level. The IP20 level of protection makes the contact The silver contacts inside the switch are completely exposed, and the suspended dust in the elevator operation or in the air can adhere to the silver contacts, and as the rated voltage and current of the electrical control circuit become smaller and smaller, it is easy to cause the existing elevator door The contacts...

AI Technical Summary

Problems solved by technology

In addition, the elevators and landing doors of high-rise buildings are often installed after the main structure of the building is completed. During the installation of the elevator system, it is inevitable that large dust and impurities will adhere to the contact surface of the elevator safety door, causing failures in the elevator operation and debugging process. , and when the high-rise owner is decorating the unit room, the elevator will fail due to the low protection level of the safety contact switch during the process of transporting decoration waste, and even cause a safety accident, and the reset effect of the existing safety contact switch is not good. good

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