CN102644412B

CN102644412B - Silent door lock

Info

Publication number: CN102644412B
Application number: CN201210143801.4A
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: 2014-04-09
Anticipated expiration: 2032-05-10
Also published as: CN102644412A; CN102661083B; CN202530855U; CN102661083A; CN202530854U; CN202530853U

Abstract

The invention discloses a silent door lock, which comprises a lock box, wherein a transmission mechanism and a lock tongue capable of making retractable movement in the axial direction are arranged inside the lock box, the surface of the lock tongue is provided with an axial groove, a silent rubber ring is adhered to the groove, and the thickness of the rubber ring is larger than the depth of the groove, so that the surface of the silent rubber ring is higher than the surface of other parts of the lock tongue. According to the silent door lock, on one hand, by utilizing buffering elements such as a spring, the movement speed of the transmission mechanism can be reduced; and on the other hand, a great amount of nonmetal muffling materials such as the rubber ring and a rubber pad is utilized, so that the friction collision between the metal elements can be maximally avoided, and the noise caused by the door lock can be maximally reduced.

Description

Silent door lock

Technical field

The invention belongs to household five metals technical field, particularly relate to door lock, especially the less silent door lock of noise.

Background technology

Door lock is that its basic structure comprises that can be carried out a dead bolt for stretching motion under external force, matches with the button box being contained on doorframe in order to keep space privacy to be arranged on a kind of hardware on door, can prevent from by fortuitous events such as winds, being opened.

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

Summary of the invention

The object of the invention is to solve the noise problem that door lock sends in switching process, the silent door lock that a kind of sound is lighter is provided.

Applicant finds by careful research, and the noise that door lock sends is mainly from following action: the collision of button box panel on dead bolt and doorframe; Dead bolt is compressed motion, with the collision of other transmission mechanisms in lock box; Dead bolt is released after entering button box, the shock to button box; During artificial driving dead bolt, the frictional impact that transmission mechanism is asked.Wherein especially maximum with the sound thirdly sending.

Based on above analysis, the technical scheme that the present invention proposes is such: silent door lock, comprise lock box, in lock box, be provided with transmission mechanism and can make the dead bolt that axial stretching moves, it is characterized in that: dead bolt surface is with axial groove, groove is fitted with quiet cushion rubber, and the thickness of quiet cushion rubber is greater than the degree of depth of groove, thereby makes its surface higher than the surface of other parts of dead bolt; Described transmission mechanism comprises a slide block and a shifting block, and shifting block is installed in lock box, can as pivot, rotate under external force; Dead bolt rear portion is with dead bolt neck, one end of slide block and dead bolt neck fit, and suit place is with a packing ring, and 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 is with a cushion block; In lock box, be fixed with a divider wall with U-shaped breach, dead bolt and dead bolt neck main body are in divider wall front side, and slider body is in divider wall rear side, and both fit positions are through the U-shaped breach of divider wall; Dead bolt neck overcoat has latch bolt spring, and one end props up dead bolt, and the other end props up divider wall antetheca; In lock box, there is a pair of the first slide block rubber cushion, be divided into the upper and lower of slide block.

Further, slide block both sides are respectively arranged with sliding block spring and shifting block spring, and shifting block spring one end props up divider wall rear wall, and the other end and shifting block are inconsistent; Sliding block spring one end is by the second slide block elastic mounting on slide block, and the other end stretches out outside slide block, and its extension line and divider wall rear wall intersect, and intersection is provided with one the 3rd slide block rubber cushion.

In the present invention, take connect lock box and button box direction for axial, the dead bolt of take stretches out the direction of lock box as front, take its in the other direction as after.

After the present invention installs, under free state, latch bolt spring opens, and dead bolt is stretched out outside lock box.When at closing time, dead bolt is subject to the compressing indentation backward of button box on doorframe, and latch bolt spring is also compressed, and slide block is motion backward simultaneously also; Work as door-closing in-place, dead bolt enters after button box completely, and latch bolt spring discharges, dead bolt is ejected, and slide block also travels forward simultaneously, in motion process its with sliding block spring can encounter the 3rd slide block rubber cushion of divider wall rear wall, thereby play cushioning effect, reduce the movement velocity of slide block and dead bolt; Slide block and dead bolt move forward, and dead bolt can be encountered button box inwall, and because there is outstanding quiet cushion rubber on dead bolt surface, first it will touch button box, further play the effect of buffering and noise reduction.When using handle to open the door, by handle, rotate shifting block, moving tooth pulls slide block and dead bolt to move backward, makes in dead bolt retraction lock box; Shifting block spring is compressed simultaneously, and shifting block is formed to buffering, makes the movement velocity of shifting block and slide block, dead bolt be unlikely to too fast; When decontroling handle, when dead bolt ejects, course of action and noted earlier basically identical.

From above analysis, one aspect of the present invention, by using the bolsters such as spring, has reduced the movement velocity of transmission mechanism; Used in a large number on the other hand the nonmetallic quieter materials such as cushion rubber, rubber cushion, farthest avoided the frictional impact between metalwork, thereby greatly reduced the noise that door lock brings.

Accompanying drawing explanation

Figure l is the assembling schematic diagram of the embodiment of the present invention.

Fig. 2 is the sectional drawing of the embodiment of the present invention.

Fig. 3 is the schematic diagram of embodiment of the present invention lock box part.

Institute drawings attached acceptance of the bid note is as follows: at the bottom of 1 one lock boxes, and 2 one shifting block cushion blocks, the 3 one the first slide block rubber cushions, 4 one three slide block rubber cushions, 5 one shifting blocks, 6 one shifting block spring cushion blocks, 7 one slide blocks, the 8 one the second slide block rubber cushions, 9 one lock box covers, 10 1 sliding block springs, ll mono-latch bolt spring, l2 mono-packing ring, l3 mono-dead bolt, the quiet cushion rubber of l4 mono-, l5 mono-shifting block spring, l6 mono-lock box buckle, 21 1 dead bolt cushion rubbers, 22 1 divider walls.

The specific embodiment

Referring to accompanying drawing.The present embodiment is comprised of lock box and button box two parts, and it is upper that lock box is partly arranged on door, and button box is partly arranged on doorframe.Lock box comprise at the bottom of lock box 1 and lock box cover 9 fasten and form mutually, front end has lock box buckle l6, with screw association, is integrated, and has the divider wall 22 with U-shaped breach at the bottom of lock box.Lock box maincenter fills a shifting block 5, can rotate by 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 l3, fit portion is with packing ring 12, and dead bolt neck is outward also with latch bolt spring ll; Dead bolt front end stretches out outside lock box, and there is an axial groove on surface, and quiet cushion rubber 14 is fastened on this groove, and after engaging, its surface is higher than dead bolt surface.Slide block 7 respectively has first slide block rubber cushion 3, one sides to be provided with shifting block spring l5 up and down, and shifting block spring 15 one end prop up divider wall 22 rear walls, and the other end is inconsistent by shifting block spring cushion block 6 and shifting block 5; In the second slide block rubber cushion 8, the second slide block rubber cushions 8 of opposite side fixed card unification shaped as frame, be fixedly mounted with a sliding block spring l0, the other end of sliding block spring 10 stretches out outside slide block; The relevant position of divider wall 22 rear walls is provided with one the 3rd slide block rubber cushion 4, when sliding block spring l0 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, adjacent metal parts does not all send movement interference, and all the packing ring of right and wrong metal, cushion block etc. come in contact, therefore can effectively reduce noise.

Claims

1. silent door lock, comprise lock box, in lock box, be provided with transmission mechanism and can make the dead bolt that axial stretching moves, it is characterized in that: dead bolt surface is with axial groove, groove is fitted with quiet cushion rubber, the thickness of quiet cushion rubber is greater than the degree of depth of groove, thereby makes its surface higher than the surface of other parts of dead bolt; Described transmission mechanism comprises a slide block and a shifting block, and shifting block is installed in lock box, can as pivot, rotate under external force; Dead bolt rear portion is with dead bolt neck, one end of slide block and dead bolt neck fit, and suit place is with a packing ring, and 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 is with a cushion block; In lock box, be fixed with a divider wall with U-shaped breach, dead bolt and dead bolt neck main body are in divider wall front side, and slider body is in divider wall rear side, and both fit positions are through the U-shaped breach of divider wall; Dead bolt neck overcoat has latch bolt spring, and one end props up dead bolt, and the other end props up divider wall antetheca; In lock box, there is a pair of the first slide block rubber cushion, be divided into the upper and lower of slide block.

2. silent door lock as claimed in claim 1, is characterized in that: slide block both sides are respectively arranged with sliding block spring and shifting block spring, and shifting block spring one end props up divider wall rear wall, and the other end and shifting block are inconsistent; Sliding block spring one end is by the second slide block elastic mounting on slide block, and the other end stretches out outside slide block, and its extension line and divider wall rear wall intersect, and intersection is provided with one the 3rd slide block rubber cushion.