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公开(公告)号：US11866299B2
公开(公告)日：2024-01-09
申请号：US17624619
申请日：2019-07-23
Applicant: Hitachi, Ltd.
Inventor： Yosuke Kubo , Tomohisa Hayakawa , Hidetaka Zama
Abstract: An elevator apparatus provided with a safety gear is disclosed which is adapted to prevent the turn-on of a brake state detection switch during power outage even while being operated by an electric actuator. This elevator apparatus includes: a safety gear 5 disposed at a car 1; and an electric actuator 3 for operating the safety gear. The elevator apparatus further includes a brake state detection switch 6 for detecting a brake state of the safety gear. The brake state detection switch is operated by a mechanism 8 which operates the safety gear with an operation of the electric actuator. The brake state detection switch is in an off state for a displacement of the mechanism during interruption of power supply. The brake state detection switch is turned on for the displacement of the mechanism during the brake of the safety gear.
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公开(公告)号：US12122641B2
公开(公告)日：2024-10-22
申请号：US18010507
申请日：2020-06-29
Applicant: Hitachi, Ltd.
Inventor： Yosuke Kubo , Tomohisa Hayakawa , Hidetaka Zama
IPC: B66B5/16
CPC classification number: B66B5/16
Abstract: An elevator device adapted to improve the operational reliability of an electric actuator in an installation environment is disclosed. The electric actuator actuates a safety gear. The elevator device includes: a car (1); a safety gear (2) mounted to the car; and an electric actuator (10) mounted to the car and operative to actuate the safety gear. The electric actuator includes: a housing (30); a mechanism part located in the housing; and an operation lever (11) connected to the mechanism part and extended from the inside of the housing to the outside of the housing through an opening of the housing. The housing includes a cover member (32) for covering the opening. The operation lever is inserted through the cover member.
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