Patent ID: 9630808
Date: 2017-04-25
CPC Classifications: B66B,G05B

Claim:
1. A missing footstep detection device for a passenger conveyor installed in a passenger conveyor including a rail formed so as to have a linear portion and a curved portion, installed in a building; footsteps endlessly coupled at a regular interval, guided by the rail and a roller mounted to each of the footsteps to roll in contact with the rail, the detection device comprising: a detection member having a first end side and a second end side, that is pivotally supported about a shaft passing through an intermediate portion between the first end side and the second end side and parallel to a direction of a center shaft of rolling of the roller, and is disposed above the linear portion of the rail so that the first end side can make contact with an outer peripheral surface of the roller rolling on an upper surface of the linear portion of the rail; a biasing mechanism to bias the first end side to rotate toward the linear rail beneath the first end side; and a switch provided to transmit a signal in accordance with the rotation of the detection member due to the biasing.