Lock body silent structure

Abstract

The invention discloses a lock body silent structure, comprising a lock body, a tilted bolt, a square bolt assembly and an anti-insertion bolt, wherein the side wall of the lock body is formed with a tilted bolt outlet, a square bolt outlet and an anti-insertion bolt outlet for the tilted bolt, the square bolt outlet and the anti-insertion bolt outlet, and the tilted bolt can be slidably installed in the lock body along the axial direction of the tilted bolt outlet, and the square bolt assembly and the anti-insertion bolt can be slidably installed in the lock body respectively. The lock body is also fixed with a tilted bolt silent elastic pad, a square bolt silent elastic pad and an anti-insertion bolt silent elastic pad. The tilted bolt, the square bolt assembly and the anti-insertion bolt are respectively formed with a stop part extending along the radial direction thereof, and the stop part on the tilted bolt, the stop part on the square bolt assembly and the stop part on the anti-insertion bolt are respectively stopped on the surfaces of the tilted bolt silent elastic pad, the square bolt silent elastic pad and the anti-insertion bolt silent elastic pad towards one side of the tilted bolt outlet, the square bolt outlet and the anti-insertion bolt outlet.

Description

Technical Field

[0001] The present invention relates to a door lock, in particular to a lock body silent structure. Background Art

[0002] At present, when the door lock is opened, the stoppers on the oblique tongue, square tongue and anti-insertion tongue of the door lock will be blocked on the side wall of the door lock to prevent them from falling out. However, since the stoppers on the oblique tongue, square tongue and anti-insertion tongue and the side wall of the door lock are made of metal, noise will be generated due to collision. Currently, plastic sleeves are provided in the oblique tongue outlet and square tongue outlet of the door lock to mute the noise. However, this method has a poor mute effect and will change the lock body structure. Once the plastic sleeve falls off, it will cause the lock body to malfunction. Summary of the Invention

[0003] In order to overcome the above-mentioned defects, the present invention provides a lock body silent structure, which can achieve a silent locking effect of the lock body without affecting the internal structure of the lock body.

[0004] The lock body is provided with a locking mechanism, wherein the locking mechanism comprises a locking mechanism, a locking mechanism for locking the lock body, a locking mechanism for locking the lock body, a locking mechanism for locking the lock body, and a locking mechanism for locking the lock body.

[0005] As a further improvement of the present invention, the structure in which the inclined tongue can be slidably installed in the lock body along the axial direction of the inclined tongue outlet is as follows: a inclined tongue bracket is fixedly installed on the inner wall of the lock body, and an inclined tongue feeder is provided in the inclined tongue bracket which can slide a set distance along the axial direction of the inclined tongue outlet, and the inclined tongue can be rotatably installed in the door opening direction on the inclined tongue feeder.

[0006] As a further improvement of the present invention, at least one oblique tongue silent elastic pad is fixedly installed on the side wall of the oblique tongue bracket, and a first gasket is formed at one end of the oblique tongue silent elastic pad. The first gasket extends into the inner side of the oblique tongue bracket and presses against the side wall of the door lock where the oblique tongue outlet is provided. The stopper on the oblique tongue presses against the surface of the first gasket in the locked state.

[0007] As a further improvement of the present invention, a second gasket and a third gasket are further provided on the oblique tongue silent elastic pad, the second gasket and the second gasket are arranged in parallel and spaced apart, and the stop portion on the oblique tongue is clamped between the second gasket and the third gasket along two opposite sides perpendicular to its sliding direction, and the second gasket and the third gasket can be out of contact with the oblique tongue and the oblique tongue upper stop portion thereon in the unlocked state.

[0008] As a further improvement of the present invention, the structure in which the oblique tongue silent elastic pad is fixedly installed on the side wall of the oblique tongue bracket is as follows: at least two through-holes or protrusions are provided on the side wall of the oblique tongue bracket, and at least two protrusions or through-holes are correspondingly provided on the oblique tongue silent elastic pad, and the protrusions are inserted into the through-holes one by one.

[0009] As a further improvement of the present invention, an opening structure is provided on the side wall of the oblique tongue bracket for inserting the first gasket at one end of the oblique tongue silent elastic pad. A protrusion is also provided on the side wall of the oblique tongue bracket opposite to the opening structure. The first gasket is provided with a slot whose opening direction is perpendicular to the axial direction of the protrusion, and the protrusion can be tightly clamped in the slot.

[0010] As a further improvement of the present invention, a latch tongue resetting elastic member is further provided, the two ends of which are respectively connected to the latch tongue feeder and the latch tongue bracket. The latch tongue resetting elastic member provides an elastic retaining force to the latch tongue feeder toward the latch tongue outlet. An arc-shaped opening groove is formed at one end of the latch tongue feeder toward the latch tongue outlet. The latch tongue is provided with a rotating shaft extending perpendicular to its sliding direction, and the rotating shaft can be rotatably inserted into the arc-shaped opening groove.

[0011] As a further improvement of the present invention, the square tongue assembly includes a square tongue and a square tongue bracket, at least one square tongue is fixed at one end of the square tongue bracket, the square tongue silent elastic pad is tightly attached to the side wall of the door lock where the square tongue outlet is provided, the square tongue silent elastic pad is provided with a socket for the square tongue to pass through, and the end face of one end of the square tongue bracket is stopped on the surface of the square tongue silent elastic pad.

[0012] As a further improvement of the present invention, the square tongue silent elastic pad is provided with a countersunk groove structure on the side facing the square tongue outlet of the lock body, and at least one bayonet is provided on the bottom surface of the countersunk groove. One end of the anti-insertion tongue silent elastic pad is provided with a step structure, and the step structure can be just accommodated in the countersunk groove, and at least one buckle is provided on the step structure, and the buckle is connected with the bayonet in a one-to-one correspondence. The other end of the anti-insertion tongue silent elastic pad extends out of the countersunk groove and is close to the surface of the lock body on the side where the anti-insertion tongue outlet is provided, and the other end of the anti-insertion tongue silent elastic pad is directly opposite to the stopper on the anti-insertion tongue.

[0013] As a further improvement of the present invention, the oblique tongue silent elastic pad, the square tongue silent elastic pad and the anti-insertion tongue silent elastic pad are all rubber pads.

[0014] The beneficial effects of the present invention are as follows: the present invention prevents the oblique tongue, square tongue assembly and anti-insertion tongue from colliding with the side wall of the door lock when locking by arranging rubber oblique tongue silent elastic pads, square tongue silent elastic pads and anti-insertion tongue silent elastic pads in the lock body, thereby achieving a silent locking effect of the door lock, and the special structure of the oblique tongue silent elastic pad does not affect the flipping of the oblique tongue while achieving the silent locking of the oblique tongue. The oblique tongue silent elastic pad, square tongue silent elastic pad and anti-insertion tongue silent elastic pad of the present invention have simple structures, are easy to install, and occupy little space. They do not affect the normal use of the lock after installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of the lock body of the present invention;

[0016] Figure 2 This is an exploded view of the oblique tongue silent structure of the present invention;

[0017] Figure 3 This is an exploded view of the square tongue silent structure of the present invention;

[0018] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0019] Figure 5 This is an exploded view of the tongue-proof silent structure of the present invention. DETAILED DESCRIPTION

[0020] Embodiment: A lock body silent structure includes a lock body 1, a latch bolt 2, a square bolt assembly 3 and an anti-insertion bolt 4. The side wall of the lock body 1 is formed with a latch bolt outlet 5, a square bolt outlet 6 and an anti-insertion bolt outlet 7 for the latch bolt 2, the square bolt 24 on the square bolt assembly 3 and the anti-insertion bolt 4 to extend out. The latch bolt 2 is slidably installed in the lock body 1 along the axial direction of the latch bolt outlet 5. The square bolt assembly 3 and the anti-insertion bolt 4 are slidably installed in the lock body 1 along the axial direction of the square bolt outlet 6 and the anti-insertion bolt outlet 7. A slant tongue silent elastic pad 8, a square tongue silent elastic pad 9 and an anti-insertion tongue silent elastic pad 10 are also fixed, and the slant tongue 2, the square tongue assembly 3 and the anti-insertion tongue 4 are respectively formed with stoppers extending along their radial directions, and the stoppers on the slant tongue 2, the square tongue assembly 3 and the anti-insertion tongue 4 are respectively stopped on the surfaces of the slant tongue silent elastic pad 8, the square tongue silent elastic pad 9 and the anti-insertion tongue silent elastic pad 10 toward the slant tongue outlet 5, the square tongue outlet 6 and the anti-insertion tongue outlet 7. When the lock body 1 is locked, the oblique tongue 2, square tongue 24 and anti-insertion tongue 4 extend out of the lock body 1 through the oblique tongue outlet 5, square tongue outlet 6 and anti-insertion tongue outlet 7 respectively to lock. When the oblique tongue 2, square tongue 24 and anti-insertion tongue 4 slide to the locked state, the stop parts thereon are in surface contact with the oblique tongue silent elastic pad 8, square tongue silent elastic pad 9 and anti-insertion tongue silent elastic pad 10 to avoid hard contact with the side wall of the door lock body 1, thereby achieving the effect of buffering and silencing. The oblique tongue silent elastic pad 8, square tongue silent elastic pad 9 and anti-insertion tongue silent elastic pad 10 can be directly installed on the existing lock for use without affecting the structure of the lock body 1. The oblique tongue silent elastic pad 8, square tongue silent elastic pad 9 and anti-insertion tongue silent elastic pad 10 falling off from the lock body 1 will not affect the normal use of the lock. They have good versatility, do not affect the use of the lock, have a simple structure, are easy to install and use, and the lock body 1 has a good silent effect.

[0021] The structure of the latch bolt 2 being slidably mounted in the lock body 1 along the axial direction of the latch bolt outlet 5 is as follows: a latch bolt bracket 11 is fixedly mounted on the inner side wall of the lock body 1, a latch bolt feeder 12 is provided in the latch bolt bracket 11 and is slidable along the axial direction of the latch bolt outlet 5 by a set distance, and the latch bolt 2 is rotatably mounted on the latch bolt feeder 12 in the door opening direction. After the lock body 1 is unlocked, when the user pushes the door, the side wall of the latch bolt 2 is pressed by the side wall of the door frame slot and flipped. When the latch bolt 2 flips to a certain angle, it contacts the side wall of the door frame slot through the inclined surface. The continued pressure on the latch bolt feeder 12 drives the latch bolt feeder 12 to move into the lock body 1 and out of the door frame slot, automatically unlocking the latch bolt 2. This structure allows the door to be opened without pressing the handle, avoiding the need to press the handle again to open the door after opening the door, making it more convenient to use.

[0022] At least one latch bolt silent pad 8 is fixedly mounted on the side wall of the latch bolt bracket 11. A first gasket 13 is formed on one end of the latch bolt silent pad 8. The first gasket 13 extends into the interior of the latch bolt bracket 11 and abuts against the side wall of the door lock where the latch bolt outlet 5 is located. When the latch bolt 2 is locked, a stopper on the latch bolt 2 abuts against the surface of the first gasket 13. Ideally, two symmetrical latch bolt silent pads 8 are positioned on opposite sides of the latch bolt bracket 11. When the latch bolt 2 slides through the latch bolt outlet 5 and extends outside the lock body 1, the latch bolt silent pads 8 contact the stopper on both sides of the latch bolt 2 to silence the movement.

[0023] The latch bolt silent spring pad 8 is further provided with a second gasket 14 and a third gasket 15. The second gasket 14 and the second gasket 15 are arranged parallel and spaced apart. The stopper portion on the latch bolt 2 is sandwiched between the second gasket 14 and the third gasket 15 on opposite sides perpendicular to its sliding direction. The second gasket 14 and the third gasket 15 can disengage from the latch bolt 2 and its upper stopper portion when unlocked. The second gasket 14 and the third gasket 15 restrain the stopper portion of the latch bolt 2 when the latch bolt 2 is locked and sliding, preventing the latch bolt 2 from colliding with the latch bolt bracket 11 due to the clearance. When unlocked, the second gasket 14 and the third gasket 15 are disengaged and do not affect the flipping of the latch bolt 2.

[0024] The structure of the oblique tongue silent elastic pad 8 fixedly mounted on the side wall of the oblique tongue bracket 11 is as follows: at least two through-holes 16 or bosses 17 are provided on the side wall of the oblique tongue bracket 11, and at least two bosses 17 or through-holes 16 are correspondingly provided on the oblique tongue silent elastic pad 8, and the bosses 17 are inserted into the through-holes 16 in a one-to-one correspondence. The oblique tongue silent elastic pad 8 is mounted on the oblique tongue bracket 11 by the corresponding bosses 17 and the through-holes 16, which facilitates installation.

[0025] The side wall of the latch bracket 11 is also provided with an opening structure 18 for inserting the first gasket 13 at one end of the latch tongue silent elastic pad 8. The side wall of the latch bracket 11 is also provided with a protrusion 19 directly opposite the opening structure 18. The first gasket 13 is provided with a slot 20 whose opening direction is perpendicular to the axial direction of the boss 17. The protrusion 19 can be tightly retained in the slot 20. The protrusion 19 is retained in the slot 20, and the engagement with the through-hole 16 and the boss 17 fixes the latch tongue silent elastic pad 8 in two different directions, providing a stable fixed installation and convenient installation and removal.

[0026] A latch bolt resetting elastic member 21 is further provided, the two ends of which are respectively connected to the latch bolt feeder 12 and the latch bolt bracket 11. The latch bolt resetting elastic member 21 provides an elastic retaining force to the latch bolt feeder 12 toward the latch bolt outlet 5. An arc-shaped opening groove 22 is formed at one end of the latch bolt feeder 12 toward the latch bolt outlet 5. The latch bolt 2 is provided with a rotating shaft 23 extending perpendicular to its sliding direction. The rotating shaft 23 is rotatably inserted into the arc-shaped opening groove 22. After the door lock is opened, the door push latch 2 flips over and at the same time, the latch 2 and the latch sender 12 are pressed by the side wall of the door frame slot, and slide together along the inner wall of the latch bracket 11 toward the inside of the lock body 1, and finally exit the door frame slot to open the door. During the sliding process of the latch sender 12, the latch reset elastic member 21 is compressed. When the door is opened, the latch reset elastic member 21 elastically resets to realize the reset of the latch 2 and the latch sender 12. This structure realizes the automatic reset of the latch 2, ensuring that the latch 2 is automatically in the locked state after the door is closed again.

[0027] The latch assembly 3 includes a latch 24 and a latch bracket 25. At least one latch 24 is fixedly mounted at intervals on one end of the latch bracket 25. A latch silent elastic pad 9 is closely attached to the side wall of the door lock where the latch outlet 6 is located. The latch silent elastic pad 9 is provided with a socket for the latch 24 to pass through. One end of the latch bracket 25 abuts against the surface of the latch silent elastic pad 9. The latch silent elastic pad 9 forms an L-shaped structure, with two side walls of the L-shaped structure closely attached to the inner side wall of the lock body 1. The socket for the latch 24 to pass through is located on one side wall of the L-shaped structure. A connecting hole is provided on the other side of the L-shaped structure. A limiting post is provided on the lock body 1. The latch bracket 25 is provided with an elongated hole for the limiting post to slide through. The connecting hole on the other side wall of the L-shaped structure is precisely mounted on the outside of the limiting post. Both ends of one side wall of the L-shaped structure, along the direction in which the latches 24 are arranged, are fixedly connected to the side wall of the lock body 1 where the latch outlet 6 is located via connectors.

[0028] The square tongue silent elastic pad 9 is provided with a countersunk groove structure 26 on the side facing the square tongue outlet 6 of the lock body 1, and at least one bayonet 27 is provided on the bottom surface of the countersunk groove. One end of the anti-insertion tongue silent elastic pad 10 is provided with a step structure 28, and the step structure 28 can be just accommodated in the countersunk groove, and at least one buckle 29 is provided on the step structure 28. The buckle 29 is buckled and connected with the bayonet 27 in a one-to-one correspondence. The other end of the anti-insertion tongue silent elastic pad 10 extends out of the countersunk groove and is close to the surface of the lock body 1 on the side where the anti-insertion tongue outlet 7 is provided, and the other end of the anti-insertion tongue silent elastic pad 10 is directly opposite to the stopper on the anti-insertion tongue 4. During installation, the step structure 28 at one end of the anti-insertion tongue silent elastic pad 10 is clamped in the space between the side wall of the door lock and the countersunk groove of the square tongue silent elastic pad 9, and is fixed with the bayonet 27 by the buckle 29. This structure realizes that the anti-insertion tongue silent elastic pad 10 is fixed on the lock body 1 while the square tongue silent elastic pad 9 is installed. The structure is simple and easy to install. The anti-insertion tongue silent elastic pad 10 has a compact structure and does not take up extra space.

[0029] The oblique tongue silent elastic pad 8, the square tongue silent elastic pad 9 and the anti-insertion tongue silent elastic pad 10 are all rubber pads. The rubber pads have good elasticity and good silent effect.

Claims

1. A lock body silent structure, comprising a lock body (1), a slanted tongue (2), a square tongue assembly (3) and an anti-insertion tongue (4), wherein a slanted tongue outlet (5), a square tongue outlet (6) and an anti-insertion tongue outlet (7) are formed on the side wall of the lock body for the slanted tongue, the square tongue of the square tongue assembly and the anti-insertion tongue to extend out, the slanted tongue is slidably mounted in the lock body along the axial direction of the slanted tongue outlet, the square tongue assembly and the anti-insertion tongue are slidably mounted in the lock body along the axial direction of the square tongue outlet and the anti-insertion tongue outlet, respectively, and characterized in that: The lock body is also fixed with an inclined tongue silent elastic pad (8), a square tongue silent elastic pad (9) and an anti-insertion tongue silent elastic pad (10); the inclined tongue, the square tongue assembly and the anti-insertion tongue are respectively formed with a stopper extending along their radial direction; the stopper on the inclined tongue, the stopper on the square tongue assembly and the stopper on the anti-insertion tongue are respectively stopped on the surfaces of the inclined tongue silent elastic pad, the square tongue silent elastic pad and the anti-insertion tongue silent elastic pad towards the inclined tongue outlet, the square tongue outlet and the anti-insertion tongue outlet; the structure of the inclined tongue installed in the lock body in a manner that can slide along the axial direction of the inclined tongue outlet is as follows: an inclined tongue bracket (11) is fixedly installed on the inner wall of the lock body, and the inclined tongue bracket is capable of sliding along the axial direction of the inclined tongue outlet. The inclined bolt outlet is provided with an inclined bolt feeder (12) for axially sliding a set distance, and the inclined bolt is installed on the inclined bolt feeder so as to be rotatable in the door opening direction. At least one inclined bolt silent elastic pad is fixedly installed on the side wall of the inclined bolt bracket. A first gasket (13) is formed on one end of the inclined bolt silent elastic pad. The first gasket extends into the inner side of the inclined bolt bracket and abuts against the side wall of the door lock provided with the inclined bolt outlet. The stopper on the inclined bolt abuts against the surface of the first gasket in the locked state. Two inclined bolt silent elastic pads are symmetrically arranged on two opposite sides of the inclined bolt bracket. When the inclined bolt slides through the inclined bolt outlet and extends to the outside of the lock body, the inclined bolt silent elastic pads contact and mute the stopper on the inclined bolt on both sides.

2. The lock body silent structure according to claim 1, characterized in that: The oblique tongue silent elastic pad is further provided with a second gasket (14) and a third gasket (15), the second gasket and the second gasket are arranged in parallel and spaced apart, the stopper on the oblique tongue is clamped between the second gasket and the third gasket along two opposite sides perpendicular to the sliding direction thereof, and the second gasket and the third gasket can be disengaged from the oblique tongue and the oblique tongue upper stopper thereon in an unlocked state.

3. The lock body silent structure according to claim 2, characterized in that: The structure in which the oblique tongue silent elastic pad is fixedly mounted on the side wall of the oblique tongue bracket is as follows: at least two through-holes (16) or convex columns are provided on the side wall of the oblique tongue bracket, and at least two convex columns (17) or through-holes are correspondingly provided on the oblique tongue silent elastic pad, and the convex columns are inserted into the through-holes in a one-to-one correspondence.

4. The lock body silent structure according to claim 3, characterized in that: The side wall of the oblique tongue bracket is also provided with an opening structure (18) for inserting a first gasket at one end of the oblique tongue silent elastic pad, and the side wall of the oblique tongue bracket is also provided with a protrusion (19) facing the opening structure, and the first gasket is provided with a slot (20) with an opening direction perpendicular to the axial direction of the protrusion, and the protrusion can be tightly clamped in the slot.

5. The lock body silent structure according to claim 1, characterized in that: A latch tongue resetting elastic member (21) is also provided, and the two ends of the latch tongue resetting elastic member are respectively connected to the latch tongue feeder and the latch tongue bracket. The latch tongue resetting elastic member provides an elastic retaining force to the latch tongue feeder in the direction of the latch tongue outlet. An arc columnar opening groove (22) is formed at one end of the latch tongue feeder toward the latch tongue outlet. The latch tongue is provided with a rotating shaft (23) extending perpendicular to its sliding direction. The rotating shaft is rotatably inserted into the arc columnar opening groove.

6. The lock body silent structure according to claim 1, characterized in that: The square tongue assembly comprises a square tongue (24) and a square tongue bracket (25), at least one square tongue is fixedly arranged at one end of the square tongue bracket, the square tongue silent elastic pad is closely attached to the side wall of the door lock provided with a square tongue outlet, the square tongue silent elastic pad is provided with a socket for the square tongue to pass through, and the end face of one end of the square tongue bracket is stopped on the surface of the square tongue silent elastic pad.

7. The lock body silent structure according to claim 6, characterized in that: The square tongue silent elastic pad is provided with a countersunk groove structure (26) on the side of the lock body where the square tongue outlet is provided, and at least one bayonet (27) is provided on the bottom surface of the countersunk groove. One end of the anti-insertion tongue silent elastic pad is provided with a step structure (28), and the step structure can be just accommodated in the countersunk groove, and at least one buckle (29) is provided on the step structure. The buckle is buckled and connected with the bayonet in a one-to-one correspondence. The other end of the anti-insertion tongue silent elastic pad extends out of the countersunk groove and is closely attached to the surface of the lock body where the anti-insertion tongue outlet is provided, and the other end of the anti-insertion tongue silent elastic pad is directly opposite to the stopper on the anti-insertion tongue.

8. The lock body silent structure according to claim 1, characterized in that: The oblique tongue silent elastic pad, the square tongue silent elastic pad and the anti-insertion tongue silent elastic pad are all rubber pads.

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