Abstract: A limit switch wherein a switch mechanism and plunger for operating the mechanism are assembled together to a switch body having pull-out terminals to form an integral switch assembly which is housed in a housing from its open bottom inserting the plunger through a guide cylinder on the top of the housing. The plunger biased normally outward is operably coupled through an actuator to a movable contactor against a contactor turning spring force biasing the actuator normally inward. The switch assembly is fixed to the housing with the plunger retreated inward by a predetermined amount where the contactor is once turned over, the amount thus determining a retreating stroke of the plunger for the mechanism operation through the actuator to turn over the movable contactor.

Abstract: A limit switch wherein a first spring means for actuating a push-button of selfcontained micro-switch and a second spring means only which engages an operating means for absorbing an over-travelling stroke of the operating means which receives an external operating force are both disposed inside a limit switch housing. In normal non-actuating position, respective biasing forces of the both spring means are balanced so that the second spring means restrains the first spring means from engaging the push-button but, upon application of the operating force through the operating means to the second spring means, the restraint of the first spring means is released due to a resilient bowing of the second spring means so as to have the push-button actuated by the biasing force of the first spring means, and the second spring means continues to further bow for absorbing the over-travelling.