Dust-proof device for temperature controller

Abstract

The invention relates to a dust-proof device for a temperature controller, comprising an outer shell, an electrified connector in the outer shell and a control push rod; the outer shell comprises a lower cover and an upper cover which is adapted to the lower cover; the control push rod is in a cylindrical structure; the upper cover is provided with a hollow conical boss which is used for installing the control push rod and is in a conical shape; a circular retaining piece which is adapted to the upper end surface of the hollow conical boss is arranged on the control push rod; and the upper cover and the lower cover are fastened through a fastening structure. According to the invention, because the hollow conical boss is arranged and the control push rod is designed into the cylindrical structure, the control push rod and the hollow conical boss are connected through a circular contact surface, a gap between the control push rod and the hollow conical boss is reduced, the circular retaining piece prevents small particles (e.g. dust) in the air from easily entering the temperature controller and the connector from being poorly connected, the service life of the temperature controller is prolonged, the communication of the electrified connector is ensured, the repair cost of an enterprise is reduced, and the working efficiency is improved.

Description

technical field [0001] The invention relates to a dustproof device, in particular to a dustproof device for a temperature controller. Background technique [0002] Temperature controller is a widely used control instrument. There are many kinds of instruments used for temperature control. It is generally installed and used in the electronic fields of refrigerators, air conditioners and automobiles. The existing temperature controller is provided with a push rod for controlling the energized contact at one end. The push rod has a square structure, and a square hole suitable for the push rod is processed on the upper cover of the temperature controller to facilitate the installation of the push rod. Since the push rod of this structure needs to be movable, there is a gap between it and the square hole of the upper cover, but through the gap, fine particles (such as dust) in the air can easily enter the inside of the temperature air device, resulting in poor contact of the ener...

AI Technical Summary

Problems solved by technology

Since the push rod of this structure needs to be movable, there is a gap between it and the square hole of the upper cover, but through the gap, fine particles (such as dust) in the air can easily enter the inside of the temperature air device, resulting in poor contact of the energized contact. Affect the use of the temperature controller and shorten its service life

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