The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 29, 2019
Filed:
Nov. 13, 2015
Otis Elevator Company, Farmington, CT (US);
Yongtao Yang, Hangzhou, CN;
Huanfeng Liu, Hangzhou, CN;
Chong Chen, Hangzhou, CN;
Hua Zhang, Hangzhou, CN;
QingXi Cai, Hangzhou, CN;
Junfeng Wu, Hangzhou, CN;
OTIS ELEVATOR COMPANY, Farmington, CT (US);
Abstract
The present invention relates to a landing-door door lock device. The following problem is solved: the position of a lock ball of a general landing-door door lock device is not adjustable, and adjustment is complicated when there is a deviation between positions of the lock ball and a door knife. The device includes a primary lock and a secondary lock, the primary lock includes a bottom plate and a locking arm, a counter weight is mounted on the locking arm, a moving ball is fixed onto the counter weight, a fixed ball is mounted on the bottom plate, the secondary lock includes a buckle plate, the locking arm is connected onto the bottom plate through a rotary shaft, an arc-shaped hole is opened on the counter weight, a shaft sleeve is sheathed on a shaft of the fixed ball, the shaft sleeve penetrates into the arc-shaped hole, a front end of the buckle plate is provided with a first lock hook, the locking arm is correspondingly provided thereon with a lock column, and the first lock hook is buckled on the lock column. The present invention has the following advantages: the rotary shaft and the fixed ball are disposed separately, the positions of the fixed ball and the moving ball can be adjusted left and right, when there is a deviation between positions of the lock ball and the door knife of the landing-door door lock device on different floors, it is not necessary to adjust the position of the door lock of the whole floor, so adjustment is simple, and a problem of poor contact occurring in electrical contacts on the door lock is also avoided.