Elevator emergency stop device and elevator system

摘要

The present invention provides an emergency stop device and an elevator system for an elevator that can suppress an increase in the size of a brake element, suppress a variation in braking force, increase power utilization efficiency, and suppress a variation in deceleration. The elevator safety device according to the present invention has a first sliding surface (23a), a brake (23) that is pressed against the guide rail (8) to generate a braking force, and a first sliding surface (23a). The movable member (22) having the second sliding surface (22a) in contact with the elastic member (24) and a pressing force for pressing the brake (23) against the guide rail (8) are applied to the first sliding surface (23a). ), And the brake (23) is configured to be movable in the vertical direction relative to the movable member (22) by sliding the first and second sliding surfaces (22a, 23a). As the position of the contact portion (25) of the first and second sliding surfaces (22a, 23a) moves upward, the pressing force (F1) increases and the elastic body (24) reaches its maximum value. It is configured to decrease after reaching.