A doorbell device including upper case, elastic component, and button module is provided. The upper case has an outer surface, first annular-holding surface disposed opposite to the outer surface, first opening and annular trench. The first annular-holding surface surrounds the first opening. The annular trench surrounds the first annular-holding surface. The elastic component has first fastening protrusion and flexible-carrier layer surrounded and connected by the first fastening protrusion. The button module has a second annular-holding surface, first bottom surface, and pressing surface disposed opposite to the first bottom surface. The first fastening protrusion is interference fit with the annular trench. The button module is disposed on the flexible-carrier layer. At least a part of the first bottom surface is facing the flexible-carrier layer. The button module surrounded by the second annular-holding surface corresponds to the first opening, and the second annular-holding surface is facing the first annular-holding surface.

A doorbell device including upper case, elastic component, and button module is provided. The upper case has an outer surface, first annular-holding surface disposed opposite to the outer surface, first opening and annular trench. The first annular-holding surface surrounds the first opening. The annular trench surrounds the first annular-holding surface. The elastic component has first fastening protrusion and flexible-carrier layer surrounded and connected by the first fastening protrusion. The button module has a second annular-holding surface, first bottom surface, and pressing surface disposed opposite to the first bottom surface. The first fastening protrusion is interference fit with the annular trench. The button module is disposed on the flexible-carrier layer. At least a part of the first bottom surface is facing the flexible-carrier layer. The button module surrounded by the second annular-holding surface corresponds to the first opening, and the second annular-holding surface is facing the first annular-holding surface.

Plug connections and in particular plug connections for use in an industrial environment are presented. An attachment housing arrangement has an attachment housing for accommodating a hood of a plug connector with plug contacts and a mechanical locking arrangement for mechanically locking the hood on the attachment housing. Also presented is a method for unlocking a mechanical locking of a hood of a plug connector with plug contacts on an attachment housing of an attachment housing arrangement. The attachment housing arrangement is provided with a fixing arrangement for fixing the mechanical locking arrangement at least in a locking state, and with a control unit for controlling the fixing arrangement, the control unit being configured to control the fixing arrangement so as to release a fixing of the locking arrangement only when the plug contacts are free of current and free of voltage within predefined tolerances.

A key switch includes a base, a key cap, a first support member and a second support member. The key cap is disposed with respect to the base. The first support member and the second support member are disposed between the key cap and the base. The first support member has a first linkage structure. The second support member has a second linkage structure. The first linkage structure and the second linkage structure abut against each other, such that the first support member and the second support member rotate synchronously with respect to a horizontal axis. When one of the first support member and the second support member horizontally moves with respect to the other one of the first support member and the second support member within a predetermined range along the horizontal axis, the first linkage structure and the second linkage structure keep abutting against each other.

A key switch includes a base, a key cap, a first support member and a second support member. The key cap is disposed with respect to the base. The first support member and the second support member are disposed between the key cap and the base. The first support member has a first linkage structure. The second support member has a second linkage structure. The first linkage structure and the second linkage structure abut against each other, such that the first support member and the second support member rotate synchronously with respect to a horizontal axis. When one of the first support member and the second support member horizontally moves with respect to the other one of the first support member and the second support member within a predetermined range along the horizontal axis, the first linkage structure and the second linkage structure keep abutting against each other.

An electrical/mechanical switching having a first terminal and a second terminal. The first terminal is a neutral terminal and has a first terminal power engagement tab and a first terminal engagement tab with a first terminal copper dimple. The second terminal is a neutral terminal and has a second terminal mating engagement tab and a second terminal engagement tab with a second terminal copper dimple. A cam member is provided proximate the first terminal engagement tab and is movable between a first position and a second position to move the first terminal engagement tab into electrical and mechanical engagement with the second terminal engagement tab. An opening projection is provided proximate the first terminal engagement tab and the second terminal engagement tab and is movable between a first position and a second position to separate the first terminal engagement tab and the second terminal engagement tab.

A dual push button switch assembly for a vehicle includes an elastic button being moveable between a first unactuated position and a second actuated position, an actuator that is movable between a first position and a second position, and first and second switches. When the elastic button is in the first unactuated position, a resilient dome biases the actuator into the first position, and when the elastic button is moved towards the second actuated position, a force applied to the elastic button is transmitted to the actuator to move the actuator towards the second position, and wherein as the actuator moves towards the second position, the first and second switches are activated.

A control key assembly including a button cover and a weight member is provided. The button cover has a first top surface, a bottom surface and a first assembling structure, wherein the first assembling structure is located on the bottom surface. The weight member has an arc surface and a second assembling structure, the arc surface and the second assembling structure are located on opposite sides of the weight member, wherein the second assembling structure is assembled with the first assembling structure, and the weight of the weight member is greater than the weight of the button cover.

A tailgate deactivation system. A switch includes two terminals configured to be electrically coupled to a tailgate power circuit that supplies power to at least a portion of a tailgate of a vehicle, and an actuator configured to electrically couple the two terminals in an on state to allow power to flow in the tailgate power circuit, and to electrically decouple the two terminals in an off state to inhibit power from flowing in the tailgate power circuit.

A tailgate deactivation system. A switch includes two terminals configured to be electrically coupled to a tailgate power circuit that supplies power to at least a portion of a tailgate of a vehicle, and an actuator configured to electrically couple the two terminals in an on state to allow power to flow in the tailgate power circuit, and to electrically decouple the two terminals in an off state to inhibit power from flowing in the tailgate power circuit.