An actuator is provided for creating an electrical contact between two tracks of a printed circuit board. The actuator includes a polymer part, forming an arm including one contact end and one end for setting in motion; and a metal part, fixedly attached to the contact end, having a general shape of a cap.

In a first aspect of the present disclosure, a spring plate includes a central portion; an opening that is positioned at a center of the central portion; and a strip extending from a part of an inner edge of the opening that is positioned at the center of the central portion. The strip includes a first width that is positioned adjacent to the part of the inner edge of the opening and a second width that is positioned adjacent to an end of the strip. The first width of the strip is wider than the second width that is positioned adjacent to the end of the strip.

A switch device includes a housing that includes a central fixed contact and a first peripheral fixed contact that are at a central portion of a bottom surface of a recessed portion of the housing, and a second peripheral fixed contact that is at a peripheral portion of the bottom surface of the recessed portion; a first movable contact that is disposed on an upper side of the central portion of the bottom surface of the recessed portion and is in contact with the first peripheral fixed contact; a second movable contact that is disposed on an upper side of the first movable contact and is in contact with the first movable contact and the second peripheral fixed contact; and a first stem that is disposed on an upper side of the second movable contact and is configured to press the first movable contact toward the central fixed contact.

A switch device includes a housing that includes a central fixed contact and a first peripheral fixed contact that are at a central portion of a bottom surface of a recessed portion of the housing, and a second peripheral fixed contact that is at a peripheral portion of the bottom surface of the recessed portion; a first movable contact that is disposed on an upper side of the central portion of the bottom surface of the recessed portion and is in contact with the first peripheral fixed contact; a second movable contact that is disposed on an upper side of the first movable contact and is in contact with the first movable contact and the second peripheral fixed contact; and a first stem that is disposed on an upper side of the second movable contact and is configured to press the first movable contact toward the central fixed contact.

An illuminated film-covered keyboard includes: a backlit keyboard module which includes a plurality of keys that are light-permeable, and at least one backlight source; a frame body disposed on the backlit keyboard module, the frame body including a key area, wherein the top surface of each of the plurality of keys is exposed at the key area; and a cover film disposed at the key area and on top of the top surface of each of the plurality of keys, wherein the cover film includes a light-permeable film, a base color layer, a light-shielding layer that is opaque, and a protection layer disposed on a side of the light-shielding layer opposing the base color layer, and wherein the portions of the light-shielding layer that respectively correspond to each of the plurality of keys are removed so as to form a plurality of light-transparent patterns.

An illuminated film-covered keyboard includes: a backlit keyboard module which includes a plurality of keys that are light-permeable, and at least one backlight source; a frame body disposed on the backlit keyboard module, the frame body including a key area, wherein the top surface of each of the plurality of keys is exposed at the key area; and a cover film disposed at the key area and on top of the top surface of each of the plurality of keys, wherein the cover film includes a light-permeable film, a base color layer, a light-shielding layer that is opaque, and a protection layer disposed on a side of the light-shielding layer opposing the base color layer, and wherein the portions of the light-shielding layer that respectively correspond to each of the plurality of keys are removed so as to form a plurality of light-transparent patterns.

In a first aspect of the present disclosure, a spring plate includes a central portion; a first leg portion projecting outward from an edge of the central portion; and a second leg portion projecting outward from the edge of the central portion. The first leg portion includes a hollow portion that is positioned within an outline of the first leg portion in a top plan view, and the second leg portion includes a hollow portion that is positioned within an outline of the second leg portion in a top plan view.

Embodiments are directed to a dome switch and methods related to the use thereto. In one aspect, an embodiment includes a key cap. The embodiment may further include a domed structure having upper and lower portions. The domed structure may be configured to deform in response to an input force received at the upper portion by the key cap. The embodiment may further include a collar affixed to the lower portion and extending toward the key cap. The collar may resist deformation of the domed surface.

A waterproof apparatus for a terminal side key and a terminal are disclosed. The apparatus includes: a terminal shell (1) with a sidewall hole that is filled with a terminal side key (3), and a terminal side-key circuit board component (2) connected to a terminal mainboard (4), herein, the terminal side-key circuit board component (2) includes: a side-key circuit board (23), an arched metal film (22) fixedly connected to the side-key circuit board, and a circuit board waterproof ring (21) used for wrapping the side-key circuit board (23) and the arched metal film (22) as a whole, herein, the circuit board waterproof ring (21) wrapping the side-key circuit board (23) and the arched metal film (22) as a whole is combined with a sidewall of the terminal shell (1) in an interference-fitted manner.

A waterproof apparatus for a terminal side key and a terminal are disclosed. The apparatus includes: a terminal shell (1) with a sidewall hole that is filled with a terminal side key (3), and a terminal side-key circuit board component (2) connected to a terminal mainboard (4), herein, the terminal side-key circuit board component (2) includes: a side-key circuit board (23), an arched metal film (22) fixedly connected to the side-key circuit board, and a circuit board waterproof ring (21) used for wrapping the side-key circuit board (23) and the arched metal film (22) as a whole, herein, the circuit board waterproof ring (21) wrapping the side-key circuit board (23) and the arched metal film (22) as a whole is combined with a sidewall of the terminal shell (1) in an interference-fitted manner.