A button device includes a base extending in a longitudinal direction, a sensor module mounted to the base, a keycap disposed above the sensor module, two scissor switch modules, and a pushbutton module. The sensor module has a first sensing member and two second sensing members disposed at two opposite sides of the first sensing member in the longitudinal direction. The pushbutton module is operable to switch between a released state, where the pushbutton module is not in direct contact with the first sensing member such that each of the scissor switch modules would not be indirect contact with corresponding second sensing member, and a depressed state, where the pushbutton module comes in direct contact with the first sensing member.

An X-ray fluoroscopic imaging apparatus includes a table, an imaging system including an X-ray source and a detector, and an operation panel unit including a plurality of operation input units. The plurality of operation input units include an emergency stop unit and a stop state release unit. The emergency stop unit and the stop state release unit are provided separately from each other at different positions.

A key device includes a substrate, a key cap and a restoring member. The substrate includes a top surface and two pivot seats protruding on the top surface. The pivot seats are spaced from each other. Each pivot seat has an eave portion laterally extending from a top thereof. The eave portion has a bottom edge. The key cap is above the top surface. The key cap includes a side edge and two extending arms extending from the side edge. An end of each extending arm has a pivoting portion. The pivoting portions pivotally abut against the bottom edges of the eave portions respectively without contacting the top surface of the substrate. The restoring member is between the substrate and the key cap and abuts against a bottom of the key cap.

A button structure includes a button and a fixing portion; wherein the fixing portion is configured for fixing the button, the fixing portion includes a first latching portion and a second latching portion, and the first latching portion includes a first latching opening, and the second latching portion includes a second latching opening, and the first latching opening has an opening direction substantially perpendicular to an opening direction of the second latching opening, and the first latching opening and the second latching opening are engaged with the button. An electronic device is also provided. The electronic device includes a housing and the button structure, the button structure is received in the housing.

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.

An operation input device includes an operation input unit that is configured to receive a tracing operation performed in a one-dimensional direction. The operation input unit includes a plurality of mechanical switches that are arranged side by side in an operation direction and each include an operation surface subjected to the tracing operation, the operation surface defining a curved surface along the operation direction.

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 switch device capable of preventing an occurrence of contact noise and wobbling of a stabilizer member to a bearing is provided. The key switch includes the stabilizer member supported between a key top and a base plate. The stabilizer member includes a first shaft portion rotatably supported on the lower surface side of the key top and a second shaft portion, which has a rotation axis parallel to the rotation axis of the first shaft portion and is rotatably supported by a bearing provided on the upper surface side of the base plate. The membrane sheet has at least a lower contact sheet having a cut-out shaped portion in a position corresponding to a position in which the second shaft portion is provided in a plane view and an upper contact sheet placed in an upper layer than the lower contact sheet to cover the cut-out shaped portion.

A pressing switch mechanism includes a housing, a board that is accommodated in the housing, a switch portion that is fixed to the board and generates a click feeling according to pressing a pressed portion in a direction approaching the board, and an operation plate which includes a bowl-shaped recessed surface that is recessed from a surface of the housing, of which an outer peripheral edge is supported by the housing, which is displaceably bent in the direction approaching the board, and in which a bottom wall portion of the recessed surface protruding inward the housing is in contact with the pressed portion.

A keyboard device includes a base plate with a base plate with a connecting bracket, a wing-type connecting element and a keycap. A first connecting shaft of the wing-type connecting element is inserted into the connecting bracket, so that the wing-type connecting element is connected with the base plate. While the keycap is depressed, the first connecting shaft is inserted into a first receiving space of the connecting shaft and used as a swinging fulcrum. Since the vertical movement of the wing-type connecting element is restricted by the first receiving space, the swinging range of the wing-type connecting element is reduced. Consequently, the keyboard device of the present invention is capable of improving the depressing stability of the keycap.