SAFETY DOOR SWITCH APPARATUS

摘要

An apparatus generates a machine operation enable signal as a function of a closed position of a movable safety access door of a safety guard for a work cell. A pivotal plate carries a handle and a switch receiver. A stationary non-contact proximity switch is mounted to be activated by the switch receiver when the door is closed and the pivotal plate is in a latched position. A ring receives a tongue projecting from the pivotal plate when the plate and handle are in the latched position. A pivotal hasp is movable around the ring into interference with the path of movement of the pivotal plate to block the plate from the fully latched position. A movable detent enables the plate and handle to be moved to the fully latched position only by moving the detent from exterior side of the plate.

主权项

1. The safety switch apparatus for generating an enable signal as a function of a position of a movable safety access door of a safety barrier for a work cell having a stationary frame disposed in proximity to the safety access door when the door is in a closed position, comprising:
a first mounting bracket mounted on a safety access door; a plate pivotally mounted on the first mounting bracket on the safety access door; a handle fixedly mounted on the plate; a second mounting bracket mounted on a stationary frame; a proximity switch mounted on the plate; and a switch receiver carried on the second mounting plate and adapted to be disposed in proximity with the proximity switch when the safety access door is in the closed position to activate the switch receiver.