A light guiding device is applied to an indication apparatus with a lighting function. The light guiding device includes a light guiding component and a piercing hole structure. The light guiding component has an incident surface and an emergent surface. The piercing hole structure is disposed between the incident surface and the emergent surface. An inner wall of the piercing hole structure includes at least one arc surface portion and at least one plane surface portion. Alight beam from the incident surface can be turned to a first angle via the arc surface portion, and the light beam can be turned to a second angle via the plane surface portion, so as to evenly project the light beam onto the emergent surface. A dimension of the emergent surface is greater than a dimension of the incident surface, and the first angle is greater than the second angle.

A keyswitch structure includes a keycap having a lower surface and an engaging portion protruding from the lower surface, the keycap moving to a lower position when the keycap is pressed, a linking bar coupled with the engaging portion, a distal end of the engaging portion being lower than the linking bar when the keycap moves to the lower position, a baseplate disposed below the keycap, the baseplate having a recessed space corresponding to the engaging portion, and a buffer film disposed on the baseplate, the buffer film substantially extending over the recessed space and having a deformable portion corresponding to the recessed space, wherein when the keycap moves toward the baseplate to the lower position, the distal end of the engaging portion pushes the deformable portion to make the deformable portion extend into the recessed space.

A key mechanism is disclosed. The key mechanism comprises a keycap, a dome support structure positioned relative to the keycap and defining an opening, an actuation mechanism coupled to the keycap, and a collapsible dome positioned in the opening of the dome support structure. The actuation mechanism is configured to movably support the keycap relative to the dome support structure. The dome comprises an upstop member configured to limit upward travel of the collapsible dome.

A push switch includes a casing, an operation body movable into and out of the casing, and a switch element operable with the movement of the operation body into and out of the casing. The casing includes a first outer peripheral wall, a first inner peripheral wall, a first guide provided to the first outer peripheral wall, and a second guide provided to the first inner peripheral wall. The operation body includes a second outer peripheral wall, a second inner peripheral wall, a first engagement portion provided to the second outer peripheral wall and slidably engaged with the first guide, and a second engagement portion provided to the second inner peripheral wall and slidably engaged with the second guide. A clearance between the second guide and the second engagement portion is smaller than a clearance between the first guide and the first engagement portion.

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.

A switch device includes a base part which includes a switch element, an operating member, a force transmission member which transmits a force between the switch element and the operating member, a light source, and a reflective surface. The operating member includes an operating outer surface, an operating inner surface, and a transmitting member. The transmitting member has a transmitting inner surface. At least a portion of the force transmission member is disposed along a pressing direction between the transmitting inner surface and the switch element. The reflective surface is disposed at a position where it reflects at least a part of the light from the light source to at least a portion of the transmitting inner surface.

A reaction force generating member includes: a first dome that gives a reaction force to an operation member according to the depression of the operation member; and a second dome that includes a hemispherical bowl part disposed inside the first dome, and a projection projecting downward from the center of the bowl part and depressing a switch disposed below the operation member.

A keyboard using temporal evaluation of timestamps. The keyboard changes the functions of keys based the temporal relation of key events on home row. Other embodiments are also described and claimed.

Temperature probe hubs are disclosed. An example temperature probe hub includes a housing, a drain, and a probe jack. The drain extends through the housing. The probe jack is located within the housing in fluid communication with the drain. The drain is configured to remove fluid from the probe jack.

A pressing device includes a base board, an upper board unit that is disposed over the base board, and an intermediate unit that is disposed between the base board and the upper board unit. The upper board unit includes a panel, a circuit board, and a tact switch. The intermediate unit includes a middle portion that corresponds in position to the tact switch, a surrounding frame member, and a plurality of interconnecting board members. When the upper board unit is pressed, at least one of the interconnecting board members is deformed, and the middle portion is driven to convert the tact switch from an initial state to a triggered state.