A key assembly to be installed on a keyboard is provided. The key assembly includes a base plate including a snap-fit hook, a scissor member including a pivot shaft, and a keycap. The keycap is disposed on the scissor member and connected thereto. The scissor member is disposed on the base plate and connected thereto. A bending portion of the snap-fit hook has a chamfer structure to which the pivot shaft is pivotally connected in such a manner that the vertical gap between the snap-fit hook and the pivot shaft is reduced.

A key assembly to be installed on a keyboard is provided. The key assembly includes a base plate including a snap-fit hook, a scissor member including a pivot shaft, and a keycap. The keycap is disposed on the scissor member and connected thereto. The scissor member is disposed on the base plate and connected thereto. A bending portion of the snap-fit hook has a chamfer structure to which the pivot shaft is pivotally connected in such a manner that the vertical gap between the snap-fit hook and the pivot shaft is reduced.

A turn signal switch device has a manipulation lever and a cancel lever that can advance and retract to and from the rotation path of a cancel protrusion, which is shaped like a sector and rotates together with a shaft. A cancel protrusion engaging part that engages a cancel protrusion is formed at the front end of the cancel lever. The cancel protrusion engaging part is disposed at a position offset from the lever body of the cancel lever in the axial direction of the shaft.

A turn signal switch device has a manipulation lever and a cancel lever that can advance and retract to and from the rotation path of a cancel protrusion, which is shaped like a sector and rotates together with a shaft. A cancel protrusion engaging part that engages a cancel protrusion is formed at the front end of the cancel lever. The cancel protrusion engaging part is disposed at a position offset from the lever body of the cancel lever in the axial direction of the shaft.

A switch actuating device (1) for a vehicle door includes an actuating element (10) with an actuating surface (11), a mechanical switch (20) and a mechanism (30). The switch is secured on a first component/component group (31). A lever (32) is mounted for pivot in relation to the first component/component group (31). A first region (32.2) of the lever is connected to a first part of the actuating element (10) via a first articulation (10.1). A second part of the actuating element (10) is mounted on the first component/component group (31) via a second articulation (10.2). The actuating element (10) bends when the actuating surface (11) is subjected to manual pressure causing the distance between the first articulation (10.1) and the second articulation (10.2) to shorten, which causes the lever (32) to pivot toward the switch such that the switch is switched.

A switch mechanism (12) includes a housing (16, 18) with a fenestration (21), a switch element (22) held in the housing, and a membrane switch held in the fenestration. The membrane switch includes a flexible membrane (20) and a rigid rib (26). The rib is constrained to linear movement by guides (37, 38) in the housing so that contact with the membrane causes the membrane to deform and the rib to translate to actuate the switch element.

A switch mechanism (12) includes a housing (16, 18) with a fenestration (21), a switch element (22) held in the housing, and a membrane switch held in the fenestration. The membrane switch includes a flexible membrane (20) and a rigid rib (26). The rib is constrained to linear movement by guides (37, 38) in the housing so that contact with the membrane causes the membrane to deform and the rib to translate to actuate the switch element.

A power-driven working device including: a working tool; a drive unit configured to drive the working tool; a control unit configured to control an output power of the drive unit; and an operating unit including a first switch and a second switch, is provided. The control unit includes a cruise control unit configured to execute cruise control to maintain the output power of the drive unit constant when a cruise switch is activated, and an output power adjustment unit configured to increase the output power of the drive unit and to continue the cruise control when the first switch is activated during the cruise control, and to decrease the output power of the drive unit and to continue the cruise control when the second switch is activated during the cruise control.

A switch circuit includes a first circuit including a first switch and first output terminals, and a second circuit including a second switch and second output terminals. The first circuit and the second circuit are connected in series. The first circuit has a circuit configuration in which a combination of resistors in a signal path between the first output terminals of the first circuit differs depending on the electrical conduction state of the first switch. The second circuit has a circuit configuration in which a combination of resistors in a signal path between the second output terminals of the second circuit differs depending on the electrical conduction state of the second switch.

An operating device is provided for a human-powered vehicle. The operating device basically includes a base, a first electric switch, a second electric switch, a first operating member and a second operating member. The first operating member is movable with respect to the base to activate the first electric switch as the first operating member moves from a non-operated position to an intermediate operating position, and then activate the second electric switch as the first operating member moves from the intermediate operating position to an additional operating position. The second operating member is movable with respect to the base to activate the second electric switch as the second operating member moves from a non-operated position to an intermediate operating position, and then activate the first electric switch as the second operating member moves from the intermediate operating position of the second operating member to an additional operating position.