A transparent keycap manufacturing method includes adhering an opaque base to a fixing film, performing a laser engraving process or an etching process on a bottom surface of the opaque base to generate a continuous hollow pattern region and a pattern component surrounded by the continuous hollow pattern region, coating transparent glue on the bottom surface of the opaque base to fill the continuous hollow pattern region with the transparent glue, adhering a transparent base to the bottom surface of the opaque base, and removing the fixing film from the opaque base.

Embodiments describing a method of forming a multi-layered keycap structure are disclosed herein. The method includes forming a first polymer layer on a second polymer layer, wherein the first polymer layer includes a first color and the second polymer layer includes a second color, and coupling the first polymer layer and second polymer layer to a substrate layer such that the first polymer layer is closer to the substrate than the second polymer layer. The method may further include forming a third polymer layer on the second polymer layer; and etching the multi-layered keycap structure to form an opening having a bottom surface that exposes at least one of the first or second color.

The present invention provides a keycap, method for manufacturing a keycap, and keyswitch. The keycap comprises an inner keycap member, an outer keycap member, and a character layer. The inner keycap member comprises an inner body and an inner sidewall. The inner sidewall is disposed on the periphery of the inner body. The outer keycap member is disposed on the inner keycap member. The outer keycap member comprises an outer body and an outer sidewall. The outer sidewall is disposed on the periphery of the outer body. The outer body is corresponding to the inner body. The outer sidewall corresponds to the inner sidewall. The character layer is disposed between the inner keycap member and the outer keycap member. The character layer comprises a character pattern disposed between the outer body and the inner body.

A push switch includes a case, a fixed contact member, a moving contact member, a first protective sheet, and a second protective sheet. The case has a first surface with a recess opened and a second surface opposite from the first surface. The fixed contact member includes a fixed contact in the recess and a terminal on an outer surface of the case. The moving contact member is in the recess and includes a moving contact to contact with the fixed contact through a press operation. The first protective sheet is provided for the first surface to cover the recess. The second protective sheet covers the second surface. The first protective sheet is welded to the first surface with a first welded portion surrounding an entire circumference of the recess. The second protective sheet is welded to the second surface with a second welded portion.

The invention provides an axially actuating tactile electrical switch comprising a casing; a plurality of independent fixed electrical contacts arranged in a base of the casing, and a movable electrical contact comprising a peripheral portion resting on a portion of a fixed peripheral electrical contact and a central portion movable vertically downwards; a single piece actuating body made of elastic material comprising a peripheral portion, an actuating central part comprising a lower portion for actuating the movable electrical contact, and an upper portion for receiving an actuating force, forming a casing comprising an upper cover having a hole whereby a free upper end section of the upper portion extends axially; the cover has an internal retaining surface; and the actuating body has an abutment surface cooperating with the internal retaining surface of the cover to determine an upper rest position of the actuating body with respect to the casing.

The present invention discloses a method to manufacture a keycap for keys of a keyboard, including: providing a top fabric layer and a molding film disposed beneath the top fabric layer; molding the molding film and the top fabric layer to form a film structure having an inner surface; and providing a keycap body having an upper surface, wherein the outline of the upper surface matches with that of the inner surface to form the keycap. In the present invention, the keycap is formed using the film structure and the keycap body by plastic injection or adhesion agent, the keycap is further manufactured as keys, and a symbol is engraved on the upper surface of the film structure by laser. Because the backlit device's light transmits through the keycap, users can recognize the symbols on the keys.

An electronic component includes a housing and a cover. The housing includes a concave portion accommodating therein elements. The cover covers the concave portion. A laser-welded portion including a discontinuous portion is provided along a circumference of the concave portion of the housing and fixes the cover to the housing.

A housing includes a concave portion in which components are to be accommodated. A cover covers the concave portion. A first laser-welded portion is provided along a circumference of the concave portion of the housing and fixes the cover to the housing. The cover includes an opening positioned inside of the first laser-welded portion and corresponding to a part of the circumference of the concave portion of the housing.

The invention provides an axially actuating tactile electrical switch comprising a casing; a plurality of independent fixed electrical contacts arranged in a base of the casing, and a movable electrical contact comprising a peripheral portion resting on a portion of a fixed peripheral electrical contact and a central portion movable vertically downwards; a single piece actuating body made of elastic material comprising a peripheral portion, an actuating central part comprising a lower portion for actuating the movable electrical contact, and an upper portion for receiving an actuating force, forming a casing comprising an upper cover having a hole whereby a free upper end section of the upper portion extends axially; the cover has an internal retaining surface; and the actuating body has an abutment surface cooperating with the internal retaining surface of the cover to determine an upper rest position of the actuating body with respect to the casing.

The switch body includes: a wiring substrate where first to fourth fixed contact members are formed; and a movable contact member including a pressure receiving part opposite from the second fixed contact member, a first outer edge facing the first fixed contact member, and a second outer edge facing the third fixed contact member. The fourth fixed contact member is formed in a region outside a projection region being a projection of the movable contact member on the wiring substrate and is in a position facing the first outer edge when the second outer edge is moved to a region where the second fixed contact member is formed.