| 摘要 |
A motion detecting limit switch minimized in size and still easy to assemble respective parts and to connect lead wires to contactor terminals is provided. The switch comprises a switch unit including switch over contactors and a head unit including a rotatable actuator arm for converting actuator displacements into switch actuating movements. The switch unit is accommodated in a housing comprising a base body widely opened with side walls of reduced height allowing free access to the contactor terminals of the switch unit secured in the base body, except an end wall of larger height to which the head unit is mounted, and a lid formed with an electrically insulative material in a shape complementary to the reduced height side walls of the base body for fitting over the switch unit. A cylindrically extended mounting part of the head unit including transmitting means of the converted switch actuating movements to the switch unit is axially rotatably fitted in an aperture in the end wall of the base body to have the transmitting means opposed contactor actuating rod of the switch unit. A resilient means holds the mounting part of the head unit in position in the rotatable manner while simultaneously securing the switch unit firmly in position inside the base body.
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