CN202530854U

CN202530854U - Silent door lock

Info

Publication number: CN202530854U
Application number: CN2012202087985U
Authority: CN
Inventors: 陈力
Original assignee: Guangdong Mingmen Locks Industry Co Ltd
Current assignee: Guangdong Mingmen Locks Industry Co Ltd
Priority date: 2011-12-08
Filing date: 2012-05-10
Publication date: 2012-11-14
Anticipated expiration: 2022-05-10
Also published as: CN102661083A; CN202530853U; CN202530855U; CN102644412A; CN102644412B; CN102661083B

Abstract

The utility model discloses a silent door lock, which includes a lock box, wherein a transmission mechanism and a lock tongue capable of performing axial retractable movement are arranged in the lock box; the transmission mechanism includes a sliding block; a lock tongue neck is arranged at the rear part of the lock tongue; one end of the sliding block is matched with the lock tongue neck in a sleeving manner; and a gasket is arranged at the sleeving part. According to the utility model, the lock tongue and the sliding block are sleeved and fixed, and the gasket is used for buffering, so that relative motion and collision between the lock tongue and the sliding block can be avoided, and noise is avoided; and the silence effect of the door lock can be remarkably improved after noise at the lock tongue and the sliding block is eliminated.

Description

A kind of silent door lock

Technical field

The utility model belongs to household five metals technical field, particularly relates to door lock, especially the less silent door lock of noise.

Background technology

Door lock is for keeping the space privacy to be installed in a kind of hardware on the door, and its basic structure comprises a dead bolt that can carry out stretching motion under external force, matches with button box on being contained in doorframe, can prevent to be opened by fortuitous event such as wind.

In some special occasions, like ward etc., very high to the requirement that environment is quiet, the sound that the switch door is produced is enough to become noise source; For the noise of door and doorframe collision generation, people have found out many solutions, as adopting damp hinge, reach and at door and doorframe junction adhesive tape etc. are set.After this problem solved, the sound that sends of door lock just seemed considerably loud at closing time, makes us irritated.

Summary of the invention

The purpose of the utility model is to solve the noise problem that door lock sends in switching process, provides a kind of sound lighter silent door lock.

The applicant is through careful discovering, the noise that door lock sends is mainly from following action: the collision of button box panel on dead bolt and the doorframe; Dead bolt is compressed motion, with the collision of other transmission mechanisms in the lock box; Dead bolt is released after getting into button box, to the bump of button box; When artificially driving dead bolt, the frictional impact between transmission mechanism.Wherein maximum with the sound that thirdly sends especially, in order to reduce the noise that door lock sends, just need in lock, each link of transmission mechanism motion collision improve.

Based on above analysis, the technical scheme that the utility model proposes is such: a kind of silent door lock, comprise lock box, and be provided with transmission mechanism and the dead bolt that can do the axial stretching motion in the lock box, it is characterized in that: described transmission mechanism comprises a slide block; The dead bolt rear portion has the dead bolt neck, an end of slide block and dead bolt neck fit, and the suit place has a packing ring.

As further technical scheme, described transmission mechanism also comprises a shifting block, and shifting block is installed in the lock box, can be under external force as pivoted; The other end of slide block is provided with a through hole, and the moving tooth of shifting block snaps in this through hole, and engaging place has a cushion block; Be fixed with the divider wall of a band U-shaped breach in the lock box, dead bolt and dead bolt neck main body are in the divider wall front side, and slider body is in the divider wall rear side, and the U-shaped breach of divider wall is passed at both fit positions; The dead bolt neck is with latch bolt spring outward, and an end props up dead bolt, and the other end props up the divider wall antetheca; The a pair of first slide block rubber cushion is arranged in the lock box, be divided into the upper and lower of slide block.

Serve as axial with the direction that connects lock box and button box in the utility model, before the direction of stretching out lock box with dead bolt is, with it be in the other direction after.

The dead bolt and the slide block of the utility model are fixed through fit, and have packing ring and be used for buffering, can make relative motion collision does not take place between dead bolt and the slide block, thereby can therefore not sound.Based on inventor's research, be one of main source of door lock noise here, the utility model will be here after the noise eliminating, can promote the quiet effect of door lock significantly.

Description of drawings

Fig. 1 is the assembling sketch map of the utility model embodiment.

Fig. 2 is the sectional drawing of the utility model embodiment.

Fig. 3 is the sketch map of the utility model embodiment lock box part.

Institute's drawings attached acceptance of the bid is remembered as follows: at the bottom of the 1-lock box, and 2-shifting block cushion block, the 3-first slide block rubber cushion, 4-the 3rd slide block rubber cushion, 5-shifting block; 6-shifting block spring cushion block, 7-slide block, the 8-second slide block rubber cushion, 9-lock box cover, 10-sliding block spring; The 11-latch bolt spring, 12-packing ring, 13-dead bolt, the quiet cushion rubber of 14-; 15-shifting block spring, 16-lock box buckle, 21-dead bolt cushion rubber, 22-divider wall.

The specific embodiment

Referring to accompanying drawing.Present embodiment is made up of lock box and button box two parts, and lock box partly is installed on the door, and button box partly is installed on the doorframe.Lock box comprises at the bottom of the lock box that 1 fastens mutually with lock box cover 9 and to form, and front end has lock box buckle 16, is integrated with set screws, and the divider wall 22 of band U-shaped breach is arranged at the bottom of the lock box.The lock box maincenter is adorned a shifting block 5, can rotate through the handle (not shown), and the moving tooth of shifting block 5 snaps in the through hole of slide block 7 rear ends, and engaging place has shifting block cushion block 2; The rear end fit of the front end of slide block 7 and dead bolt 13, fit portion has packing ring 12, and the dead bolt neck also has latch bolt spring 11 outward; The dead bolt front end stretches out outside the lock box, and there is an axial groove on the surface, and quiet cushion rubber 14 is fastened on this groove, and its surface, engaging back is higher than the dead bolt surface.Slide block 7 respectively has one first slide block rubber cushion 3, one sides to be provided with shifting block spring 15 up and down, and shifting block spring 15 1 ends prop up divider wall 22 rear walls, and the other end is inconsistent through shifting block spring cushion block 6 and shifting block 5; Install a sliding block spring 10 in the second slide block rubber cushion, 8, the second slide block rubber cushions 8 of opposite side fixed card unification shaped as frame, the other end of sliding block spring 10 stretches out outside the slide block; The relevant position of divider wall 22 rear walls is provided with one the 3rd slide block rubber cushion 4, and is when sliding block spring 10 travels forward, inconsistent with the 3rd slide block rubber cushion 4; The opening part of lock box and lock box buckle 16 is coated with one deck dead bolt cushion rubber 21.

In the present embodiment, the adjacent metal parts all do not send movement interference, and all the packing ring of right and wrong metal, cushion block etc. come in contact, so can effectively reduce noise.

Claims

1. a silent door lock comprises lock box, is provided with transmission mechanism and the dead bolt that can do the axial stretching motion in the lock box, and it is characterized in that: described transmission mechanism comprises a slide block; The dead bolt rear portion has the dead bolt neck, an end of slide block and dead bolt neck fit, and the suit place has a packing ring.

2. a kind of silent door lock as claimed in claim 1 is characterized in that: described transmission mechanism also comprises a shifting block, and shifting block is installed in the lock box, can be under external force as pivoted; The other end of slide block is provided with a through hole, and the moving tooth of shifting block snaps in this through hole, and engaging place has a cushion block; Be fixed with the divider wall of a band U-shaped breach in the lock box, dead bolt and dead bolt neck main body are in the divider wall front side, and slider body is in the divider wall rear side, and the U-shaped breach of divider wall is passed at both fit positions; The dead bolt neck is with latch bolt spring outward, and an end props up dead bolt, and the other end props up the divider wall antetheca; The a pair of first slide block rubber cushion is arranged in the lock box, be divided into the upper and lower of slide block.