A luminous patch type elastic button

Abstract

The invention discloses a luminous patch-type elastic button which comprises a base and a soft button body. The soft button body comprises a button convex body, an elastic soft body and a conductive contact, the elastic soft body is shaped like a tapered cylinder, the inner edge of a small opening of the elastic soft body is connected with the button convex body, the large opening end of the elastic soft body is connected with the upper surface of the base, a through hole corresponding to the size of the large opening end of the elastic soft body is formed in the middle of the base, and the conductive contact is arranged on the lower end face of the button convex body. The luminous patch-type elastic button is characterized in that the conductive contact is shaped like a ring, a packaging body of an LED chip is arranged in the middle of the annular conductive contact, and the conductive contact, the LED chip and the packaging body are connected into a whole. Built-in welding feet protruding downwards are arranged at the bottom of the base and not exposed on the outer side of the base, and the lower end faces and periphery of each built-in welding foot are both welding faces. The button is simple in structure, low in manufacturing cost, long in service life and suitable for a surface mounting technology.

Description

technical field [0001] The invention relates to the application structure design technology of a polymer elastic body key, in particular to a patch type elastic key capable of emitting light. 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 set of SMD silicone keypads is formed by molding. However, on the one hand, in the case of high-density and high-integration applications, since the pins are exposed to the edge of the button during soldering, it is impossible to meet the high-density application requirements without gaps. On the other hand, in many applications of silicone buttons, luminous performance is a common requirement; the existing technology to realize the lumi...

AI Technical Summary

Problems solved by technology

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 many applications of silicone buttons, luminous performance is a common requirement; the existing technology to realize the luminescence of patch-type silicone elastic buttons is to embed light-emitting elements in the silicone body of the silicone button, and then pass through the silicone body through leads, etc. Electrical interconnection is achieved by means of electrical interconnection; this technical solution to realize the silicone keypad with its own light-emitting elements has complex production processes, high manufacturing costs, and short service life.

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