CN215291947U

CN215291947U - Door lock

Info

Publication number: CN215291947U
Application number: CN202120845501.5U
Authority: CN
Inventors: 袁振知
Original assignee: Ningbo Ideal Hardware Industry & Trade Co ltd
Current assignee: Ningbo Ideal Hardware Industry & Trade Co ltd
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2021-12-24
Anticipated expiration: 2031-04-23

Abstract

The utility model discloses a door lock, including lock body and spring bolt, spring bolt sliding connection is in the lock body, still be provided with the spring in the lock body, work as the spring bolt to when sliding in the lock body, the spring with the spring bolt contacts, still includes a sleeve pipe and a stand, sleeve pipe one end is connected the spring bolt by to the inside one side of lock body, stand one end is fixed in the lock body, the other end of stand stretches into in the sleeve pipe, the stand with minimum clearance between the cover inside wall is between 0.05mm to 0.5 mm. When the spring bolt is kick-backed, the stand is followed the intraductal roll-off, during the roll-off, the air enters into the cover pipe in from the clearance between stand and the sleeve pipe, because the interval between stand and the sleeve pipe is less, so the air velocity of entering can not be too fast, leads to the intraductal negative pressure that forms of cover, can slow down the resilience speed of spring bolt greatly like this, the speed is too fast when avoiding spring bolt and lock body collision and produces great noise.

Description

Door lock

Technical Field

The utility model relates to a door lock.

Background

The door lock is provided with a lock tongue, the lock tongue is inserted into the lock catch to realize locking, and the lock tongue is provided with a spring for resetting the lock tongue.

The door lock with the structure has the problem that when the lock tongue is reset by the spring, larger noise can be generated. The reason for this is that the latch bolt collides with the housing of the door lock at high speed by the spring to generate a loud sound, and thus there is a need for improvement.

Disclosure of Invention

To the not enough of existence among the prior art, the utility model provides a door lock can reduce the noise when spring resets greatly.

In order to solve the above problem, the utility model discloses a technical scheme be: the utility model provides a door lock, includes lock body and spring bolt, spring bolt sliding connection is in the lock body, still be provided with the spring in the lock body, work as the spring bolt to when sliding in the lock body, the spring with the spring bolt contacts, still includes a sleeve pipe and a stand, sleeve pipe one end is connected the spring bolt lean on to the inside one side of lock body, stand one end is fixed in the lock body, the other end of stand stretches into in the sleeve pipe, the stand with minimum clearance between the intraductal wall of sleeve pipe is between 0.05mm to 0.5 mm. When the spring bolt is kick-backed, the stand is followed the intraductal roll-off, during the roll-off, the air enters into the cover pipe in from the clearance between stand and the sleeve pipe, because the interval between stand and the sleeve pipe is less, so the air velocity of entering can not be too fast, leads to the intraductal negative pressure that forms of cover, can slow down the resilience speed of spring bolt greatly like this, the speed is too fast when avoiding spring bolt and lock body collision and produces great noise.

In the above technical solution, preferably, the upright column includes a front section and a middle section, a minimum gap between the front end and the inner wall of the casing is between 0.05mm and 0.5mm, and a gap between the middle section and the inner wall of the casing is greater than a gap between the front end and the inner wall of the casing.

In the above technical scheme, preferably, the tail of the upright post is provided with a screw hole, and a screw passes through the outer wall of the lock body and then is connected in the screw hole.

The utility model discloses following beneficial effect has: when the spring bolt is kick-backed, the stand is followed the intraductal roll-off, during the roll-off, the air enters into the cover pipe in from the clearance between stand and the sleeve pipe, because the interval between stand and the sleeve pipe is less, so the air velocity of entering can not be too fast, leads to the intraductal negative pressure that forms of cover, can slow down the resilience speed of spring bolt greatly like this, the speed is too fast when avoiding spring bolt and lock body collision and produces great noise.

Drawings

Fig. 1 is a schematic perspective view of the sliding door of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the present invention.

Fig. 3 is a cross-sectional view taken along a-a of fig. 2.

Detailed Description

The invention will be described in further detail with reference to the following detailed description and accompanying drawings:

referring to fig. 1-3, a door lock includes a lock body 1 and a bolt 2, the bolt 2 is slidably connected in the lock body 1, a spring 3 is further disposed in the lock body 1, and when the bolt 2 slides into the lock body 1, the spring 3 contacts with the bolt 2.

Still include a sleeve pipe 4 and a stand 5, sleeve pipe 4 one end is connected the spring bolt 2 is by to the inside one side of lock body 1, the afterbody of stand 5 is provided with screw 51, and screw 6 passes and connects after the outer wall of lock body 1 in screw 51. The other end of the upright post 5 extends into the sleeve 4, and the minimum clearance between the upright post and the inner wall of the sleeve is 0.05mm to 0.5 mm.

The upright post 5 comprises a front section 52 and a middle section 53, the minimum clearance between the front end 52 and the inner wall of the casing 4 is between 0.05mm and 0.5mm, and the clearance between the middle section 53 and the inner wall of the casing 4 is larger than the clearance between the front end and the inner wall of the casing.

When the spring bolt is kick-backed, the stand is followed the intraductal roll-off, during the roll-off, the air enters into the cover pipe in from the clearance between stand and the sleeve pipe, because the interval between stand and the sleeve pipe is less, so the air velocity of entering can not be too fast, leads to the intraductal negative pressure that forms of cover, can slow down the resilience speed of spring bolt greatly like this, the speed is too fast when avoiding spring bolt and lock body collision and produces great noise.

Claims

1. The utility model provides a door lock, includes lock body and spring bolt, spring bolt sliding connection is in the lock body, still be provided with the spring in the lock body, work as the spring bolt to when sliding in the lock body, the spring with the spring bolt contacts its characterized in that: still include a sleeve pipe and a stand, sleeve pipe one end is connected the spring bolt lean on to the inside one side of lock body, stand one end is fixed in the lock body, the other end of stand stretches into in the sleeve pipe, the stand with minimum clearance between the intraductal wall of cover is between 0.05mm to 0.5 mm.

2. A door lock according to claim 1, wherein: the stand includes anterior segment and middle section, the anterior segment with minimum clearance between the intraductal wall of sleeve is between 0.05mm to 0.5mm, the middle section with clearance between the intraductal wall of sleeve is greater than the anterior segment with clearance between the intraductal wall of sleeve.

3. A door lock according to claim 2, wherein: the tail of the upright post is provided with a screw hole, and a screw passes through the outer wall of the lock body and then is connected in the screw hole.