Title:
DOOR LOCK WITH LEVER HANDLE HAVING BUFFER FUNCTION
Document Type and Number:
WIPO Patent Application WO/2019/052116
Kind Code:
A1
Abstract:
Provided is a door lock with a lever handle having a buffer function, the door lock comprising a lock body (1) and a lever handle (2) mounted on the lock body (1) in a hinged manner, wherein a square rod hole (3) is provided in the lever handle (2), the square rod hole (3) is sleeved on a surface of a lock cylinder driving rod, and a user rotates the lever handle (2), and same drives the movement of a lock cylinder by means of a square rod, so as to realize unlocking and locking; a follower (4) is provided in the lock body (1), the follower (4) is sleeved on a surface of the square rod hole (3), and the follower (4) is rotated with the rotation of the lever handle (2); and a driving piece (5) is also mounted in the lock body (1) in a hinged manner, a middle portion of the driving piece (5) is hinged to the lock body (1), one end of the driving piece is hinged to the follower (4) by means of a connecting plate (6), the other end of the driving piece is hinged to a piston rod (71) of a buffer cylinder (7), a tail end of the buffer cylinder (7) is hinged to the lock body (1), and when the lever handle (2) is rotated, the buffer cylinder (7) produces damping to reduce the rebound speed of the lever handle (2).
Inventors:
GUAN ZHENLING (CN)
LI SHANXIONG (CN)
QI ZHI (CN)
LI SHANXIONG (CN)
QI ZHI (CN)
Application Number:
PCT/CN2018/075268
Publication Date:
March 21, 2019
Filing Date:
February 05, 2018
Export Citation:
Assignee:
GUANGDONG JUSEN HARDWARE PREC MFG CO LTD (CN)
International Classes:
E05B3/00; E05B1/00; E05B17/00
Domestic Patent References:
| WO2010126263A2 | 2010-11-04 | |||
| WO2016155414A1 | 2016-10-06 |
Foreign References:
| CN205012758U | 2016-02-03 | |||
| CN204139742U | 2015-02-04 | |||
| CN204386265U | 2015-06-10 | |||
| DE4233037A1 | 1994-04-14 |
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