Landing-door door lock device

Patent metadata

Field	Value
Publication number	US-10189680-B2
Application number	US-201515529327-A
Country	US
Kind code	B2
Filing date	Nov 13, 2015
Priority date	Nov 27, 2014
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

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.

First claim

The invention claimed is:

1. A landing-door door lock device, comprising a primary lock and a secondary lock, wherein the primary lock comprises 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, and the secondary lock comprises a buckle plate, characterized in that: the locking arm ( 7 ) is rotationally connected onto the bottom plate ( 13 ) through a rotary shaft ( 8 ), a rear end of the locking arm is provided with a first kidney-shaped hole ( 16 ), the counter weight is fixed with the locking arm through the kidney-shaped hole, an arc-shaped hole ( 14 ) is opened on the counter weight, a shaft sleeve ( 15 ) is sheathed on a shaft of the fixed ball, the shaft sleeve penetrates into the arc-shaped hole, a second kidney-shaped hole is opened on the bottom plate, the fixed ball is fixed with the bottom plate through the kidney-shaped hole, a front end of the buckle plate is provided with a first lock hook ( 18 ), the locking arm is correspondingly provided thereon with a lock column ( 20 ), and the first lock hook is buckled on a first lock column.

2. The landing-door door lock device according to claim 1 , characterized by: further comprising an interlock hook, wherein the interlock hook comprises a mounting plate ( 1 ), a front end of the mounting plate is provided with a second lock hook ( 19 ) corresponding to the lock column, and the second lock hook is buckled on the lock column.

3. The landing-door door lock device according to claim 2 , characterized in that: a first contact switch head ( 2 ) is mounted on the mounting plate ( 1 ), the buckle plate ( 4 ) is correspondingly provided thereon with a first contact switch base ( 3 ), and when a landing door is closed in place, the first contact switch head and the first contact switch base are closed with each other.

4. The landing-door door lock device according to claim 1 or 2 or 3 , characterized in that: a second contact switch head ( 6 ) is mounted on a front end of the locking arm ( 7 ), the buckle plate ( 4 ) is correspondingly provided thereon with a second contact switch base ( 5 ), and when the door lock device is closed, the second contact switch head and the second contact switch base are closed with each other.

5. The landing-door door lock device according to claim 1 or 2 or 3 , characterized in that: the locking arm ( 7 ) is provided thereon with two first kidney-shaped holes ( 16 ), the two first kidney-shaped holes are respectively disposed in positions of upper and lower portions of the rear end of the locking arm, an upper portion of the counter weight ( 10 ) is connected onto the kidney-shaped hole located on the upper portion through a bolt, the bolt ( 9 ) is fixed with the locking arm through a snap spring and a slider nut, the moving ball ( 12 ) is correspondingly disposed at the lower portion of the counter weight, the counter weight is connected onto the kidney-shaped hole located on the lower portion through the moving ball, and the moving ball is fixed with the locking arm through a snap spring and a slider nut.

6. The landing-door door lock device according to claim 1 or 2 or 3 , characterized in that: the shaft sleeve ( 15 ) is connected onto the kidney-shaped hole of the bottom plate, the shaft sleeve is fixed with the bottom plate through a snap spring and a slider nut, and the fixed ball is in a threaded connection with the shaft sleeve.

Assignees

• Otis Elevator Co

Inventors

• Yang Yongtao
• Liu Huanfeng
• Chen Chong
• Zhang Hua
• Cai Qingxi
• Wu Junfeng

Classifications

• B66B13/16 Primary

  Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position · CPC title

• B66B13/20 Primary

  Lock mechanisms actuated mechanically by abutments or projections on the cages · CPC title