A key structure includes a keycap, a membrane circuit board, and a rubber dome between the keycap and the membrane circuit board. The rubber dome includes a ring-shaped structure, a lower foundation structure, a contacting post, a first inclined wall and a second inclined wall. The ring-shaped structure includes a first top surface. The first top surface is upwardly pushed against the keycap. The lower foundation structure includes a first bottom surface. The first bottom surface is pushed downwardly pushed against the membrane circuit board. The contacting post is connected with the ring-shaped structure. The first inclined wall is connected with the ring-shaped structure and the lower foundation structure. The second inclined wall is connected with the ring-shaped structure and the contacting post. There is a first included angle θ1 between the second inclined wall and the first bottom surface. Preferably, 30°≤θ1≤85°.

A keyboard structure including a base, a frame and several keys is provided. The frame is disposed on the base. The keys are disposed on the base and are separated from each other by the frame. From top to bottom, each key sequentially includes a cap, a limiting structure, an elastic member and a diaphragm switch element. The elastic member is disposed on the diaphragm switch element, the cap is disposed on the elastic member, and the limiting structure is engaged with the cap, such that the cap can move relative to the diaphragm switch element in a vertical direction. The surrounding surface of the cap has a flange, which contacts the bottom of the frame in the vertical direction. Thus, dusts or moisture can hardly infiltrate the keyboard structure and the waterproof and dustproof functions of the keyboard structure can be improved.

According to the present invention there is provided a button assembly, comprising, a platform having at least two electrodes; a dome member which comprises electrically conductive material, wherein the dome member is electrically connected to at least one of said at least two electrodes, and the dome is arranged so that at least a portion of the dome member overlays at least one other of the at least two electrodes, so that when the dome member is selectively collapsed inwardly by the application of force, the dome member will electrically contact said at least one other of the at least two electrodes, so that in its collapse state the dome member electrically connects the at least one of said at least two electrodes with the at least one other of the at least two electrodes; an interface member which comprises, (a) a compression member which is attached to the dome member at a position which overlays said at least one other of the at least two electrodes; (b) a restrictor member which is configured such that it projects towards the platform and the distance between the platform and the restrictor member is less than the distance between said at least one other of the at least two electrodes and portion of the dome which overlays at least one other of the at least two electrodes, and (c) at least one elastic member which connects the restrictor member and the compression member.

A control device includes a button assembly having one or more buttons and a button carrier that includes a plurality of resilient, independently deflectable spring arms. The control device may be configured as a wall-mounted keypad to control a load control device, or as a thermostat to control a temperature regulation appliance. The button carrier may be configured to prevent interference between the buttons during operation of the control device. The button assembly may be captured between a faceplate of the control device and a housing that is attached to a rear side of the faceplate. The control device may include one or more button retainers that are attached to the buttons and that are configured to align respective outer surfaces of the buttons relative to each other, and relative to the faceplate of the control device, when the buttons are in respective rest positions.

A switch device includes an operating knob on which a tilting operation is performed, a detected portion that tilts with the tilting operation of the operating knob, a detection portion that detects movement of the detected portion, and a substrate on which the detection portion is arranged. The detection portion is aligned in an in-plane direction of the substrate and performs a switching operation upon detection of movement of the detected portion in the in-plane direction.

A key structure includes a keycap, a pedestal and an elastic element. The keycap includes a main body and a coupling shaft. The pedestal includes a key slot. The key slot has an upper part and a lower part. The coupling shaft is penetrated through the upper part of the key slot and movable within the key slot upwardly or downwardly. The elastic element is installed in the lower part of the key slot. After an external force applied to the keycap is released, the elastic element is elastically restored, so that the keycap is returned to an original position. At the same time, the buffering elements in the key slot interfere with the coupling shaft. Consequently, an ascending speed of the keycap is reduced, and a click sound generated from the collision between keycap and the pedestal is reduced.

An electronic watch may include a tactile switch and/or one or more sensors for detecting rotational and translational inputs. The watch may include a display configured to produce graphical outputs that may change in response to rotational inputs, translational inputs, and/or touch inputs received at the display. The watch include a crown positioned along an exterior of the watch enclosure and a shaft coupled to the crown and extending into the enclosure. The tactile switch and/or the one or more sensors may be used to detect rotational and/or translational inputs provided at the crown.

A keyboard includes an elastic element disposed above a bottom case, a light emitter, a light receiver, a pressing element, and a keycap. When a force toward the bottom case is applied to a top surface of the elastic element, a relationship between a force to move the top surface and a distance from the top surface to the bottom case is in a negative correlation in a path of the top surface from a first position to a second position, and a relationship between a force to move the top surface and a distance from the top surface to the bottom case is in a positive correlation in a path of the top surface from the second position to a third position. The light emitter, the light receiver, and the pressing element are disposed above the elastic element. The keycap is disposed above the pressing element.

A press-key with a multiple-trigger mechanism includes a base, an alphanumeric key assembly, and at least two elastic members. The alphanumeric key assembly includes a coupling assembly provided on the base. The at least two elastic members are provided on the base and under the alphanumeric key assembly. One of the elastic members has a different height from the remainder of the elastic members. When the alphanumeric key assembly is moved toward the base, the elastic members are separately driven by the alphanumeric key assembly to press and thereby activate a switch such that different electrical signals are generated. The operability and trigger response of the press-key can be flexibly adjusted according to user needs so that the press-key can be operated rapidly and respond in real time.

A keyswitch device includes a cap, a board, a first returning member, and a second returning member. The board is disposed opposite to the cap. The first returning member is disposed between the cap and the board and includes a magnet member and a magnetic member for providing a magnetic force. The second returning member is disposed between the cap and the board for providing an elastic force. When the cap is released at a lowest position, the cap moves upward via the elastic member and then arrives and stays at a highest position via the magnetic force.