Door lock special for sliding door

Abstract

The invention discloses a door lock special for a sliding door. A lock cylinder cam (3), a lock cylinder control rod (L), a bolt clamping plate lifting sheet (4), a return spring (5), a bolt clamping plate (8), a driving rod (Q), a bolt, a bolt pressing sheet (11) and a pressing sheet spring (12) are arranged in a lock body plate (2) to form a lock body; the lock body is arranged in a frame (E) of the sliding door; two sides of the sliding door are respectively provided with a door handle (18); a bolt hook at the front end of the bolt (10) hooks a lock nose (16) on a door frame (P) so as to lock the sliding door; a door open button (N) on the door handle (18) is pressed to make the driving rode (Q) jack up the bolt clamping plate lifting sheet (4), the bolt clamping plate (8) is lifted, and the bolt pressing sheet (11) jacks the bolt (10) to loosen the lock nose (16), so the sliding door can be opened; and when the sliding door is locked, a key (Y) rotates a keyhole sleeve (S) to lockthe door and drives the lock cylinder control rod (L) to make the lock cylinder cam (3) press on the top surface of the bolt clamping plate lifting sheet (4), the driving rod (Q) cannot jack the boltclamping plate lifting sheet (4), and the bolt (10) and the lock nose (16) are kept in the hooking state, so the sliding door is locked. The door lock has the advantages of convenient use, safety andreliability.

Description

technical field [0001] The invention relates to a door lock, in particular to a door lock for a sliding door. Background technique [0002] Along with the wide application of sliding doors in office, business, exhibition and other buildings, the structure of sliding door locks is also constantly improving. The push-pull door lock commonly used at present comprises lock cylinder, deadbolt buckle and lock body, and inclined-plane deadbolt is installed on the door frame end face, cooperates with deadbolt buckle. When the deadbolt buckle is in contact with the inclined surface of the deadbolt, the deadbolt will automatically move downwards, and when it breaks away from the contact surface, the deadbolt will automatically return to its original shape and the door will be locked. The sliding door of this structure door lock is installed, and key must be used when opening the door, and the lock cylinder cooperates with the lock cylinder rotary knob to realize unblanking. It is v...

AI Technical Summary

Problems solved by technology

It is very troublesome and inconvenient to open the door with the key frequently

At the same time, due to the limitation of the profile and structural shape of the sliding door, the lock cylinder configuration of the sliding door lock is small, the strength is low, the torque is small, and the force of frequent unlocking is large, which is very easy to cause damage or failure of the lock during use.

Moreover, the sliding door can be lifted up slightly, and the door lock can be opened without a key, which is very unsafe

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