US 11,866,299 B2
Elevator apparatus
Yosuke Kubo, Tokyo (JP); Tomohisa Hayakawa, Tokyo (JP); and Hidetaka Zama, Tokyo (JP)
Assigned to HITACHI, LTD., Tokyo (JP)
Appl. No. 17/624,619
Filed by Hitachi, Ltd., Tokyo (JP)
PCT Filed Jul. 23, 2019, PCT No. PCT/JP2019/028811
§ 371(c)(1), (2) Date Jan. 4, 2022,
PCT Pub. No. WO2021/014559, PCT Pub. Date Jan. 28, 2021.
Prior Publication US 2022/0259009 A1, Aug. 18, 2022
Int. Cl. B66B 5/22 (2006.01); B66B 5/06 (2006.01)
CPC B66B 5/22 (2013.01) [B66B 5/06 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An elevator apparatus comprising:
a safety gear disposed at a car;
an electric actuator for operating the safety gear; and
a brake state detection switch fixed to the car for detecting a brake state of the safety gear,
wherein the brake state detection switch is operated by a mechanism which operates the safety gear with an operation of the electric actuator,
wherein upon interruption of a power supply of the car, the electric actuator operates the safety gear thereby displacing the mechanism to a first position toward the brake state detection switch, the brake state detection switch remaining off while the moving mechanism is in the first position, and
wherein upon braking of the safety gear thereby displacing the mechanism to a second position in contact with the brake state detection switch, the brake state detection switch is turned on.