Patent ID: 6966419

Claim:
A safety device for a passenger conveyor which stops an operation of the passenger conveyor when passenger's leg or a foreign object is caught in a clearance between a combplate disposed at a landing of the passenger conveyor and a passenger step, comprising: a combplate beam on which the combplate is mounted; a supporting beam juxtaposed to the combplate beam; supporting means for supporting the combplate beam with respect to the supporting beam, such that the combplate beam can displace in a passenger's getting on/off direction, and that the combplate beam can swing in vertical direction; a safety switch for stopping an operation of the passenger conveyor, said switch is provided on one of the combplate beam and the supporting beam; a switch actuating member for actuating the safety switch when the combplate beam is displaced with respect to the supporting beam, said switch actuating member is disposed on the other of the combplate beam and the supporting beam; a first biasing means for biasing the combplate beam with respect to the supporting beam in a direction in which the passenger gets on the step; a second biasing means for biasing the combplate beam downward with respect to the supporting beam; a first adjusting mechanism for adjusting a biasing force applied by the first biasing means; and a second adjusting mechanism for adjusting a biasing force applied by the second biasing means wherein said switch actuating member includes a first actuating portion for actuating the safety switch when the combplate beam is displaced in the passenger's getting on/off direction, and a second actuating portion for actuating the safety switch when the combplate beam is displaced upward.