A limit switch operating head includes a shaft rotatable in clockwise and counter-clockwise directions, a cam member supported on the shaft and that is rotatable in the clockwise and counter-clockwise directions responsive to rotation of the shaft, and a follower actuated by the cam member responsive to rotation thereof, with the follower including a pivot pin, a lever portion pivotable about the pivot pin, and a rolling pin mounted to the lever portion and in contact with the cam member. An actuator member contacts the lever portion and translates linearly in a first direction or second direction responsive to pivoting thereof. The rolling pin moves along a profile of the cam member upon rotation of the cam member so as to cause the lever portion to pivot, with the actuator member linearly translating in the first direction or the second direction responsive to the pivoting of the lever portion.

A limit switch includes: a switch main body; and an operation unit connected to the switch main body. The operation unit includes: a housing; a shaft member, a biasing member; and a plunger. The shaft member includes a shaft body supported by the housing in a manner rotatable from a return position to an operation position around a rotation axis, and a cam. The plunger includes: a plunger body; and at least one contact portion. The at least one contact portion includes a recess positioned on a facing surface facing the at least one protrusion and recessed in a direction moving closer to the switch main body. The recess includes: a first end; a second end; and an inclined surface. The inclined surface is inclined in a direction moving closer to the switch main body as the inclined surface extends from the second end to the first end.

A rotational over travel protection device for preventing over rotation of at least one of a cable, or a component operable with the rotational over travel protection device is provided. The device includes a housing, a rotatable shaft connected to the housing that can rotate relative to the house, and a triggering device supported in the housing and rotatable with the rotatable shaft. The device also includes a first and second rotational limit switch disposed in the housing. The switches are operable to be activated by the triggering device to arrest rotation of the rotatable shaft upon relative rotation of the rotatable shaft and the housing either a first or second rotation direction, respectively, at least 180 degrees from a zero position.

A limit switch device is placed at an intended stop position, without the need to move the actuator additionally from the position at which the on/off state is switched. A first movable portion (211) causes a first contact to slide on a second contact in a switch mechanism (103) included in a microswitch by applying a force (F′) via an actuator (102a) and a plunger (102b).

A rotational over travel protection device for preventing over rotation of at least one of a cable, or a component operable with the rotational over travel protection device is provided. The device includes a housing, a rotatable shaft connected to the housing that can rotate relative to the house, and a triggering device supported in the housing and rotatable with the rotatable shaft. The device also includes a first and second rotational limit switch disposed in the housing. The switches are operable to be activated by the triggering device to arrest rotation of the rotatable shaft upon relative rotation of the rotatable shaft and the housing either a first or second rotation direction, respectively, at least 180 degrees from a zero position.

A paddle switch system comprises a housing, a paddle having a pivot member pivotally disposed in the housing for operating an electrical switch within the housing in response to a force on the paddle, a cover coupled to the housing wherein the housing and the cover partially enclose the paddle, and a vibration reduction mechanism disposed in the housing proximate the pivot member of the paddle. The electrical switch comprises a dome switch and the paddle is disposed in the housing to partially preload the dome switch.

A limit switch may be provided with a switch body having a contact mechanism inside, and an operation unit connected to the switch body. The operation unit comprises an elastic part that energizes the operation lever from the first motion position towards the return position via the pivoting shaft and the first cam, and energizes the operation lever from the second motion position toward the return position via the pivoting shaft and the second cam, a first cam's pivoting restriction part that restricts the pivoting of the first cam in a first direction in which the operation lever moves from the return position to the second motion position, and a second cam's pivoting restriction part that restricts the pivoting to the second cam in a second direction in which die operation lever moves from the return position to the first motion position.

A limit switch is provided with a switch body having a contract mechanism inside, and an operation unit connected to the switch body. The operation unit may include a pivoting shaft support that permits pivoting of the pivoting shaft with respect to the housing body in a state of an external force along the extending direction of the pivoting shaft being not applied to the operation lever, and contacts the peripheral wall to support the pivoting shaft in a state of an external force along the extending direction of the pivoting shaft being applied to the operation lever.

A limit switch is provided with a switch body having a contact mechanism inside, and an operation unit detachably connected to the switch body. The operation unit may include a pivoting shaft and a bearing. One of the pivoting shaft and the bearing includes a protrusion that extends in a radial direction with respect to the pivoting shaft. The other of the pivoting shaft and the hearing includes a pivoting restriction part that is disposed around the pivoting shaft so as to be able to contact the protrusion, and restricts pivoting of the protrusion around the pivoting shaft.

A limit switch is provided with a switch body having a contact mechanism inside, and an operation unit detachably connected to the switch body. The operation unit may include a pivoting shaft and a bearing. One of the pivoting shaft and the bearing includes a protrusion that extends in a radial direction with respect to the pivoting shaft. The other of the pivoting shaft and the hearing includes a pivoting restriction part that is disposed around the pivoting shaft so as to be able to contact the protrusion, and restricts pivoting of the protrusion around the pivoting shaft.