A switch device includes a circuit module and a pressing module. The circuit module includes a plurality of pushbuttons and a light-emitting member that emits light having different colors when the pushbuttons are pressed. The pressing module includes an operating unit, a driven member and a pressing member. The driven member is moved alternately to a retracted position and a projecting position as a result of depression of the operating unit. The pressing member is connected to the driven member to press one of the pushbuttons when the driven member is at the projecting position, such that one of the colors of the light corresponding to the one of the pushbuttons is visible through the operating unit.

A switch device includes a circuit module and a pressing module. The circuit module includes a plurality of pushbuttons and a light-emitting member that emits light having different colors when the pushbuttons are pressed. The pressing module includes an operating unit, a driven member and a pressing member. The driven member is moved alternately to a retracted position and a projecting position as a result of depression of the operating unit. The pressing member is connected to the driven member to press one of the pushbuttons when the driven member is at the projecting position, such that one of the colors of the light corresponding to the one of the pushbuttons is visible through the operating unit.

A rotary/push operating device (10) for a man-machine interface, in particular for an operating unit of a vehicle, comprises a manually operable rotary/push element (12) which can be rotated about a rotational axis (15) and which can be pushed down in the direction of the rotational axis (15), and a rolling-body bearing (14) which defines the rotational axis (15) and which comprises a immobile bearing ring (18), a movable bearing ring (20), and a rolling-body cage (22) arranged between said bearing rings. The rotary/push element (12) is coupled to the movable bearing ring (20) in such a manner that the rotary/push element (12) will move together with the movable bearing ring (20) when, during rotation of the rotary/push element (12), the movable bearing ring (20) rotates or is axially moved in the direction of the rotational axis (15). The rolling-body cage (22) comprises a plurality of rolling bodies (24) arranged in at least one radial plane of the rolling-body cage (22). The immobile bearing ring (18) and the movable bearing ring (20) form at least one circular moving channel (27,28) in which the rolling bodies (24), during rotation of the rotary/push element (12) in the circumferential direction of the two bearing rings (18,20), are movable with rolling movements on opposite moving tracks (29,30,31,32) of the two bearing rings (18,20), and, when the rotary/push element (12) is being pushed down in the direction of the rotational axis (15), can move on the moving tracks (29,30,31,32) at a right angle relative to said circumferential direction. For limiting the movement of the rotary/push element (12) in the direction of the rotational axis (15) between a base position and a push-down position, the rotary/push operating device (10) further comprises end abutment elements (45).

A rotary/push operating device (10) for a man-machine interface, in particular for an operating unit of a vehicle, comprises a manually operable rotary/push element (12) which can be rotated about a rotational axis (15) and which can be pushed down in the direction of the rotational axis (15), and a rolling-body bearing (14) which defines the rotational axis (15) and which comprises a immobile bearing ring (18), a movable bearing ring (20), and a rolling-body cage (22) arranged between said bearing rings. The rotary/push element (12) is coupled to the movable bearing ring (20) in such a manner that the rotary/push element (12) will move together with the movable bearing ring (20) when, during rotation of the rotary/push element (12), the movable bearing ring (20) rotates or is axially moved in the direction of the rotational axis (15). The rolling-body cage (22) comprises a plurality of rolling bodies (24) arranged in at least one radial plane of the rolling-body cage (22). The immobile bearing ring (18) and the movable bearing ring (20) form at least one circular moving channel (27,28) in which the rolling bodies (24), during rotation of the rotary/push element (12) in the circumferential direction of the two bearing rings (18,20), are movable with rolling movements on opposite moving tracks (29,30,31,32) of the two bearing rings (18,20), and, when the rotary/push element (12) is being pushed down in the direction of the rotational axis (15), can move on the moving tracks (29,30,31,32) at a right angle relative to said circumferential direction. For limiting the movement of the rotary/push element (12) in the direction of the rotational axis (15) between a base position and a push-down position, the rotary/push operating device (10) further comprises end abutment elements (45).

A power tool includes a housing, an electric motor, a switch, an operating element, a contact rod, a pressing block, and a reset element. The electric motor is disposed in the housing. The switch includes a trigger point for controlling the electric motor to be turned on. The operating element is operated so that the switch is triggered. The contact rod is supported by the housing, where the operating element is capable of pushing the contact rod to move. The pressing block is elastically connected to the contact rod and capable of being driven by the contact rod to push the trigger point. The reset element is connected to the contact rod.