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1. 发明公开

EP4378875A1 FRICTIONLESS SAFETY BRAKE ACTUATOR 审中-公开
公开(公告)号：EP4378875A1
公开(公告)日：2024-06-05
申请号：EP22383178.5
申请日：2022-12-02
申请人： Otis Elevator Company
发明人： Ruben Marante Chasco
IPC分类号： B66B5/18
CPC分类号： B66B5/18
摘要： A frictionless safety brake actuator (100') comprises:
a fixed component (110);
a movable component (120);
wherein one of the fixed component (110) or the movable component (120) comprises a magnetic portion (122a) and the other of the fixed component (110) or the movable component (120) comprises a controllable electromagnet (114);
a connection arrangement (140) configured to connect a linkage to the movable component (120), wherein the linkage is actuatable so as to move a safety brake into frictional engagement with an elevator guide rail; and
at least one biasing member (130) arranged to apply a biasing force (FB) to the movable component (120) to bias the movable component (120) towards a first position in which the linkage is actuated;
wherein the movable component (120) is moveable against the biasing force (FB) to move between the first position and a second position in which the linkage is not actuated;
wherein the fixed component (110) and the movable component (120) together confine a magnetic field between the controllable electromagnet (114) and the magnetic portion (122a) in a magnetic circuit (150);
wherein, dependent upon control of the electromagnet (114), the magnetic circuit (150) selectively produces an attractive magnetic force (FA), larger than the biasing force (FB), which acts upon the magnetic portion (122a) against the biasing force (FB) of the at least one biasing member (130) to move the movable component (120) from the first position to the second position.

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