The invention relates to a limit switch comprising: a body (1) and a head (2), an actuation member (3), a shaft (30) that can be actuated in rotation about an axis of rotation (Y) by pivoting of the actuation member (3), a plunger (4), a cam mechanism for converting the rotational movement of the shaft (30) into a translational movement of the plunger (4) and vice versa, the cam mechanism comprising: a first cam (7) and a first cam follower (70), arranged to generate between them a first non-zero rotational torque over a first range of rotation of the shaft (30), a second cam (8) and a second cam follower (80), arranged to generate between them a second non-zero rotational torque over a second range of rotation of the shaft.

The invention relates to a limit switch comprising: a body (1) and a head (2), an actuation member (3), a shaft (30) that can be actuated in rotation about an axis of rotation (Y) by pivoting of the actuation member (3), a plunger (4), a cam mechanism for converting the rotational movement of the shaft (30) into a translational movement of the plunger (4) and vice versa, the cam mechanism comprising: a first cam (7) and a first cam follower (70), arranged to generate between them a first non-zero rotational torque over a first range of rotation of the shaft (30), a second cam (8) and a second cam follower (80), arranged to generate between them a second non-zero rotational torque over a second range of rotation of the shaft.

A system and method for detecting end of travel in a rotational joint with greater than 360 of travel are provided. The system includes first and second limit switches coupled to the rotational joint for signaling end of travel of the rotational joint in clockwise and counterclockwise directions; a limit switch cam ring configured to actuate the first limit switch at a first rotational position in the clockwise direction and the second limit switch at a second rotational position in the counterclockwise direction, the cam ring configured to rotate in the direction of joint rotation when the rotational joint is in an ambiguity region of joint travel; first and second cam ring return mechanisms for returning the cam ring to a default position after triggering the first and second limit switches, respectively; and an actuation pin mounted to the rotational joint such that the actuation pin follows joint rotation exactly, the actuation pin configured to actuate the cam ring.

A limit switch includes: a switch main body capable of being switched on and off; and an operation unit connected to the switch main body. The operation unit includes: a housing having a box shape; a shaft portion including a shaft main body and a cam portion, the shaft main body being supported by the housing in a state of being rotatable forward from a return position toward a first operation position around a rotation axis extending in the first direction and being rotatable backward from the return position toward a second operation position opposite to the first operation position with respect to the return position, the cam portion being provided in the shaft main body located inside the housing and being configured to rotate forward and backward together with the shaft main body; a biasing portion configured to return the shaft main body to the return position; and a plunger configured to move in the second direction by rotation of the cam portion to switch on and off of the switch main body, and configured to be able to set an operation mode from either one-side operation or both-side operation.

A limit switch includes: a switch main body capable of being switched on and off; and an operation unit connected to the switch main body. The operation unit includes: a housing having a box shape; a shaft portion including a shaft main body and a cam portion, the shaft main body being supported by the housing in a state of being rotatable forward from a return position toward a first operation position around a rotation axis extending in the first direction and being rotatable backward from the return position toward a second operation position opposite to the first operation position with respect to the return position, the cam portion being provided in the shaft main body located inside the housing and being configured to rotate forward and backward together with the shaft main body; a biasing portion configured to return the shaft main body to the return position; and a plunger configured to move in the second direction by rotation of the cam portion to switch on and off of the switch main body, and configured to be able to set an operation mode from either one-side operation or both-side operation.