Weld-leg internally-installed surface-mounted elastic key and manufacturing method thereof

Abstract

The invention discloses a weld-leg internally-installed surface-mounted elastic key and a manufacturing method thereof. The key comprises a base and a key soft body. The key soft body comprises a key convex body, an elastic soft main body and a conductive contact. The elastic soft main body is in a conical cylinder shape, the small-opening inner edge of the elastic soft main body is connected with the key convex body, the large opening end of the elastic soft main body is connected with the upper surface of the base, and a through hole corresponding to the large opening end of the elastic soft main body in size is formed in the middle of the base; the conductive contact is arranged on the lower end face of the key convex body; protruding-downwards weld legs are arranged on the bottom end face of the base and are not exposed out of the outer side of the base, and the lower end faces and the periphery faces of the weld legs are the weld faces. A key lead is good in coplanarity, and the requirements of the size, the shape and the number of the different key leads can be met; the weld-leg internally-installed surface-mounted elastic key is applied to surface mounting application, and has the advantages of being low in manufacturing cost and good in practicability; by means of the key, gapless arrangement can be achieved, and particularly, the key has the prominent advantages in high-density product application occasions and high-integration-density product application occasions.

Description

technical field [0001] The invention relates to the structure and manufacturing technology of a polymer elastic body key, in particular to a patch type elastic key with built-in welding feet and a manufacturing method thereof. 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 production process, the existing silicone keys with surface-mounted pins cannot avoid the pin bending process, which not only makes the manufacturing process complicated, but also makes it difficult to control the coplanarity of the pins; on the other hand, in high-density, high-density In the application of integrati...

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 production process, the existing silicone keys with surface mount pins cannot avoid the pin bending process, which not only makes the manufacturing process complicated, but also makes it difficult to control the coplanarity of the pins; on the other hand, in high density, high For integrated 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

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