A key module includes a base plate, a circuit layer and a lifting mechanism. The circuit layer is disposed on the base plate. The lifting mechanism is pivotally connected with the base plate relative to the circuit layer, and the lifting mechanism has an abutment element. The abutment element could interfere with the circuit layer to reduce the noise generated by the key module during operation.

A keyswitch structure includes a keycap, a base, and two supports pivotally connected to each other relative to a rotation axis and connected to and between the keycap and the base. One of the supports includes a first shaft recess, a first shaft portion, and a division slot formed therebetween; the other support includes a second shaft recess, a second shaft portion, and a division wall therebetween. The two supports are pivotally connected relative to the rotation axis by the first shaft portion and the second shaft portion rotatably disposed in the first shaft recess and the second shaft recess respectively. Therein, the division wall is inserted into the division slot. The keycap can move up and down relative to the base through the two supports.

An illuminated keyswitch structure with an illuminating module includes a base plate, a drive circuit board under the base plate, a spacer between the drive circuit board and the base plate, and a light-emitting part on the circuit board. The spacer has a through hole communicating with an opening of the base plate in a vertical direction. The light-emitting part is located in the through hole, and falls within a projection of the opening in the vertical direction. The light-emitting part has a top surface that is lower than or equal to a bottom surface of the base plate in the vertical direction. The structure of the illuminated keyswitch structure around the light-emitting part can keep flat by the spacer. The spacer can prevent the light-emitting part from structurally entering the opening, avoiding structural interference between the light-emitting part and other components above the base plate.

A key structure includes a supporting plate, a keycap, a frame and a movable plate. The supporting plate is disposed over the movable plate. The keycap is disposed over the supporting plate. The frame is disposed over the supporting plate and arranged around the keycap. The frame includes a linking element. The linking element is inserted in a groove of the movable plate. While the movable plate is moved, the linking element is moved along the groove in response to the movement of the movable plate and the frame is ascended to a position at the same level with the keycap. Consequently, the top surface of the frame and the top surface of the keycap are collaboratively defined as a flat surface.

The present application provides a slim key structure, including a flexible carrying sheet body, a key cap, a circuit board, a base plate, and a positioning frame cover. The key cap is superimposed over the flexible carrying sheet body, the circuit board is disposed below the flexible carrying sheet body, and the positioning frame cover and the base plate sandwich the key cap, the flexible carrying sheet body, and the circuit board together from the top and the bottom. The key cap includes at least one first hook that protrudes downward, the base plate includes at least one second hook that protrudes upward, and the at least one second hook penetrates through the circuit board to be engaged with the at least one first hook of the key cap. The key cap is evenly carried on the flexible carrying sheet body, and a phenomenon that the key cap wobbles and is unstable would not occur.

What is presented is a key module for a keyboard. The key module includes a first wing element and a second wing element for guiding a movement of the key module upon actuation. Each wing element includes a bar, a first arm and a second arm. The arms extend away from the bar. A mounting portion is formed on the bar. A first bearing portion for bearing the wing element is formed on the first arm. A second bearing portion for bearing the wing element is formed on the second arm. The first wing element and the second wing element are mechanically coupleable to each other. The key module also includes at least one spring element for providing a reset force upon actuation of the key module. The at least one spring element is mountable to the mounting portion of the first wing element and the mounting portion of the second wing element. The key module further includes a support element for supporting the wing elements. A plurality of accommodating portions for accommodating the bearing portions of the wing elements are formed in the support element.

Embodiments described herein provide a low travel switch mechanism. The low travel switch mechanism may include a substrate, a dome coupled to the substrate, a keycap, and an integrated pivot component disposed between the keycap and the dome. The integrated pivot component may include a hinge assembly coupled to a light guide structure. The hinge assembly may secure to the substrate, via one or more hinge interconnects, joints, or interlock features to form a pivot point. When the keycap receives a keystroke, the integrated pivot component may be operative to pivot about the pivot point and contact the dome to cause a switching event or operation.

A key structure includes a bottom plate, a keycap, a lifting mechanism, a thin-film switch layer and a backlight module. The bottom plate has a through hole. The lifting mechanism is pivotally connected to the bottom plate and the keycap. The thin-film switch layer has a reflective structure corresponding to the through hole. The backlight module includes a light source and a reflective layer. The light source is configured to emit light towards the reflective structure. The reflective layer is disposed surrounding the light source to reflect a reflected light from the reflective structure to the thin-film switch layer.

A key structure includes a first movable plate, a second movable plate, a keycap, a first linkage lever and a second linkage lever. The second movable plate is disposed over the first movable plate. The keycap is disposed over the second movable plate. The first linkage lever is connected with the keycap and the first movable plate. The second linkage lever is connected with the keycap and the second movable plate. While the first movable plate is moved in a first direction and the second movable plate is moved in a second direction, the first linkage lever and the second linkage lever are moved in different directions, so that a height of the keycap is reduced.

A three-position vacuum switch for realizing external grounding of a load side by using a bridge switch overcomes the problems in the prior art that load side grounding is realized depending on the opening and closing of a vacuum arc extinguishing chamber, a misoperation easily occurs because an operator cannot see the grounding situation intuitively, and when an operating mechanism machine has a problem, it needs to have a grounding line plugged in externally, which cause inconvenient operations with huge safety risks, a complicated structure and relatively high cost, characterized in that a bridge grounding switch is provided on the other side of the three-position vacuum switch to realize external grounding of the load side via the bridge grounding switch.