Patent ID: 9505587
Filing Date: 2016-11-29
CPC Classification: B66B

Claim Text:
1. An elevator apparatus comprising: a car; a suspending means that suspends the car; a driving apparatus that raises and lowers the car by means of the suspending means; a braking apparatus that brakes the car; and an abnormal acceleration detecting mechanism that operates the braking apparatus to stop the car if acceleration that exceeds a preset set value arises in the car, wherein the braking apparatus is a safety device that is installed on the car, wherein an actuating lever that vales the safety device is disposed on the safety device, the actuating lever including a weight mounted onto a tip end of the actuating lever, wherein the abnormal acceleration detecting mechanism includes a mass that operates in connection with movement of the car, and operates the safety device using a force that is generated by the mass if the acceleration that exceeds the set value arises in the car, wherein the mass includes a rope that is arranged in a loop inside a hoistway, and a sheave around which the rope is wound, wherein the abnormal acceleration detecting mechanism further includes a spring that applies torque to the actuating lever in a direction that is opposite to the direction that operates the safe device, and wherein the safety device is activated when the car falls due to breakage of the suspending means, and an inertial force of the mass exceeds a force that is required to activate the safety device.