A keycap forming method includes the following steps. Firstly, a stabilizer bar is formed through a first male mold and a first female mold according to an injection molding process, and a keycap is formed through a second male mold and a second female mold according to the injection molding process. Then, the stabilizer bar is fixed on the first male mold, and the keycap is fixed on the second female mold. Then, the first male mold and the second female mold are stacked on each other, so that the stabilizer bar and the keycap are combined together. Then, the first male mold and the second female mold are separated from each other, so that the stabilizer bar is detached from the first male mold. By using the keycap forming method, it is not necessary to manually assemble the stabilizer bar with the keycap.

A switch case includes a first metal plate, a dome shape metal plate, and a second metal plate. The first metal plate incudes a first ring in which a plurality of first recesses are arranged along the first ring shape, and a second ring in which a plurality of second recesses are arranged along the second ring shape. The second metal plate incudes a third ring in which a plurality of third recesses are arranged along the third ring shape, and a fourth ring in which a plurality of fourth recesses are arranged along the fourth ring shape. A direction along a line passing through a center of the first ring and a center of the second ring is different from a direction along a line passing through a center of the third ring and a center of the fourth ring.

A switch case includes a metal plate having a first surface and a second surface that is at a side opposite to the first surface, and a resin case embedding a part of the metal plate. The resin case includes a housing portion having an opening disposed on a surface of the resin case. The metal plate includes a terminal portion, a contact portion, and an intermediate portion positioned between the terminal portion and the contact portion. The terminal portion is exposed from the surface of the resin case, and the intermediate portion is embedded in the resin case. The intermediate portion is provided with first and second through-hole each penetrating the first surface and the second surface. A hole diameter of the first through-hole at the second surface is larger than a hole diameter of the first through-hole at the first surface.

A keyboard with I-shaped key caps integrally formed by injection molding includes I-shaped key caps integrally formed, a printed circuit film, and a keyboard base plate for supporting the printed circuit film. A groove is provided on the hard sheet for flow guiding so as to achieve integral injection molding of a soft-rubber convex elastic switch body in the center of the inner side of the hard sheet. Hence, the soft-rubber convex elastic switch body is directly molded in the center of the hard sheet. In this way, during pressing, the soft-rubber convex elastic switch body can directly receive a pressing force transferred from the hard sheet, thereby achieving higher press accuracy. The disclosure solves the technical problem of injection molding/mold stripping of a traditional keyboard structure, so that a key surface, of the entire keyboard has small gaps and is pretty smooth.

A soft-rubber keyboard having hard sheets with convex switches includes: a printed circuit film, a keyboard base plate for supporting the printed circuit film, an integrated soft-rubber keycap and a plurality of hard sheets. The integrated soft-rubber keycap includes a plurality of key units. The key unit is formed by connecting a soft-rubber key surface, a soft-rubber supporting body and a soft-rubber key base. Each key unit corresponds to one hard sheet. A convex switch body is downwardly integrated with the center of the hard sheet. The hard sheet is bonded to via an adhesive or integrally formed by injection molding with the bottom surface of the soft-rubber key surface. The convex switch body in the center of the hard sheet corresponds to a circuit switching point of the printed circuit film. The soft-rubber keyboard has the characteristics of simple processing, low cost, simple assembling and good press stability.

Embodiments are directed to a low profile key for a keyboard having an overmolded support structure. In one aspect, an embodiment includes a key cap having an illuminable symbol. A support structure having a pair of overmolded wings may pivotally couple to the key cap. A switch housing may surround the support structure and connect each of the first and second wings. A tactile dome may be at least partially positioned within the switch housing and configured to bias the key cap upward. A sensing membrane may be positioned along an underside surface of the tactile dome and configured to trigger a switch event in response to a collapsing of the tactile dome caused by a depression of the key cap. A feature plate may be positioned below the sensing membrane. A light guide panel may define at least one light extraction feature that may be configured to propagate light toward the key cap and cause illumination of the illuminable symbol.

Embodiments are directed to a low profile key for a keyboard having an overmolded support structure. In one aspect, an embodiment includes a key cap having an illuminable symbol. A support structure having a pair of overmolded wings may pivotally couple to the key cap. A switch housing may surround the support structure and connect each of the first and second wings. A tactile dome may be at least partially positioned within the switch housing and configured to bias the key cap upward. A sensing membrane may be positioned along an underside surface of the tactile dome and configured to trigger a switch event in response to a collapsing of the tactile dome caused by a depression of the key cap. A feature plate may be positioned below the sensing membrane. A light guide panel may define at least one light extraction feature that may be configured to propagate light toward the key cap and cause illumination of the illuminable symbol.

A seamless button including a guiding element, a movable actuating element and a switch located on a mounting plate. The movable actuating element is made of elastic material with a massive middle shaft spaced from the inner walls of the chamber by an air gap. It has an upper actuating surface and crimp surrounding the actuating surface above the air gap. It also has a profile area at the outer circumference of the movement crimp, where the horizontally outwardly extending portion of the profile area rests on top of the outer wall, the downwardly extending portion of the profile area rests on the outside of the outer profile edge and the protrusion rests on the pedestal covering it at least partially. A seamless multi-button is also disclosed, with a method for manufacturing seamless buttons.

Embodiments are directed to a low profile key for a keyboard having an overmolded support structure. In one aspect, an embodiment includes a key cap having an illuminable symbol. A support structure having a pair of overmolded wings may pivotally couple to the key cap. A switch housing may surround the support structure and connect each of the first and second wings. A tactile dome may be at least partially positioned within the switch housing and configured to bias the key cap upward. A sensing membrane may be positioned along an underside surface of the tactile dome and configured to trigger a switch event in response to a collapsing of the tactile dome caused by a depression of the key cap. A feature plate may be positioned below the sensing membrane. A light guide panel may define at least one light extraction feature that may be configured to propagate light toward the key cap and cause illumination of the illuminable symbol.

A switch case includes a metal plate having a first surface and a second surface that is at a side opposite to the first surface, and a resin case embedding a part of the metal plate. The resin case includes a housing portion having an opening disposed on a surface of the resin case. The metal plate includes a terminal portion, a contact portion, and an intermediate portion positioned between the terminal portion and the contact portion. The terminal portion is exposed from the surface of the resin case, and the intermediate portion is embedded in the resin case. The intermediate portion is provided with first and second through-hole each penetrating the first surface and the second surface. A hole diameter of the first through-hole at the second surface is larger than a hole diameter of the first through-hole at the first surface.