A waterproof patch type elastic button

Abstract

The invention discloses a waterproof patched elastic key, comprising a base and a key soft body, wherein the key soft body comprises a key boss, an elastic soft body and a conductive contact; the elastic soft body is in the shape of a conical cylinder, the inner edge of the small opening of the elastic soft body is connected with the key boss, the big opening end of the elastic soft body is connected with the upper surface of the base, and a through hole corresponding to the big opening end of the elastic soft body in size is formed in the base; the conductive contact is arranged on the lower end face of the key boss; and the elastic key is characterized in that a waterproof soft edge is formed on the outer side of the base, and at least one waterproof cavity is formed in the waterproof soft edge. An internal pin protruding downwards is arranged at the bottom of the base and is not exposed outside the base, the lower end face and the circumference of the internal pin are welding surfaces, and welding gaps are formed on the circumference of the internal pin. The key has good waterproof performance, simple structure and low manufacturing cost.

Description

technical field [0001] The invention relates to an applied structure design technology of a polymer elastic body key, in particular to a waterproof patch type elastic key. Background technique [0002] The conductive adhesive button industry was born in the 1980s and 1990s. Aiming at the problem that the traditional non-standard single silicone keypad is not suitable for the surface mount process, the surface mount type silicone keypad is proposed, that is, a pin bracket is added to the base of the silicone keypad, and a patch type silicone keypad is formed by molding a set; however , on the one hand, in the face of high-density and high-integration applications, since the pins are exposed to the edge of the button when soldering, it is impossible to meet the high-density application requirements without gaps; on the other hand, in waterproof applications, existing stickers The sheet-type silicone button has not yet solved the structural design problem well, and the waterpr...

AI Technical Summary

Problems solved by technology

Aiming at the problem that the traditional non-standard single silicone keypad is not suitable for the surface mount process, the surface mount type silicone keypad is proposed, that is, a pin bracket is added to the base of the silicone keypad, and a patch type silicone keypad is formed by molding a set; however , on the one hand, in the face of high-density and high-integration applications, since the pins are exposed to the edge of the button when soldering, it is impossible to meet the high-density application requirements without gaps; on the other hand, in waterproof applications, existing stickers The sheet-type silicone button has not yet solved the structural design problem well, and the waterproof effect can only be achieved by adding a waterproof cap

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