Self-locking auxiliary lock

Abstract

The utility model discloses a self-locking auxiliary lock. The self-locking auxiliary lock comprises a lock body, a spring bolt arranged on the lock body and a buffer pad located on the spring bolt. The spring bolt is matched on the lock body in a telescopic mode, and the cushion pad is located on the portion, extending out of the lock body, of the spring bolt. The spring bolt with the buffer pad is matched with the lock body, so that the impact between the auxiliary lock and a door frame can be reduced, the metal collision sound is reduced, the door closing noise is reduced, and the use experience of a user is improved.

Description

Technical Field

[0001] This utility model mainly relates to the field of lock technology, specifically to a self-locking auxiliary lock. Background Technology

[0002] Currently, locks on the market are divided into main locks and auxiliary locks. When installed together, main locks and auxiliary locks can effectively prevent theft and improve security. However, auxiliary locks with lock cylinders, because their bolts are made of metal, tend to produce a metallic clanging sound when they hit the door frame, creating significant noise and affecting the user experience. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art. This utility model provides a self-locking auxiliary lock. By installing a lock tongue with a buffer pad and cooperating with the lock body, the auxiliary lock can reduce the impact with the door frame, reduce the sound of metal collision, thereby reducing the noise of closing the door and improving the user experience.

[0004] This utility model provides a self-locking auxiliary lock, which includes a lock body, a bolt disposed on the lock body, and a buffer pad located on the bolt;

[0005] The latch is retractable and fits onto the lock body, and the buffer pad is located on the portion of the latch that extends out of the lock body.

[0006] The locking tongue includes a hook and a locking pin; the locking pin has a mating groove, and the hook is rotatably connected in the mating groove.

[0007] A spring is provided between the hook and the locking pin.

[0008] The bottom surface of the hook protrudes outward to form several protrusion structures.

[0009] The lock body is equipped with a transmission device, which drives the lock tongue.

[0010] The transmission device includes: a locking tongue push plate and a movable plate;

[0011] The lock body is provided with a mounting shaft, and the lock tongue push plate is provided with a mounting hole. The lock tongue push plate is installed in the lock body based on the cooperation between the mounting hole and the mounting shaft.

[0012] One end of the locking tongue push plate is inserted into the movable plate.

[0013] The transmission device also includes a torsion spring, which is mounted on the lock body. One end of the torsion spring is fixed inside the movable plate, and the other end is fixed inside the lock body.

[0014] This utility model provides a self-locking auxiliary lock. By installing a lock tongue with a buffer pad that works in conjunction with the lock body, the auxiliary lock can reduce the impact with the door frame, reduce the sound of metal collision, thereby reducing the noise of closing the door and improving the user experience. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the self-locking auxiliary lock in this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the self-locking auxiliary lock in this utility model. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] Figure 1 A schematic diagram of the self-locking auxiliary lock in this utility model is shown. Figure 2 A schematic diagram of the internal structure of the self-locking auxiliary lock of this utility model is shown. The self-locking auxiliary lock includes a lock body 1, a plurality of latches 2 disposed on the lock body 1, and a buffer pad located on the latches 2. The latches 2 are telescopically fitted on the lock body 1, and the buffer pad 3 is located on the part of the latches 2 that extends outside the lock body 1. The buffer pad 3 can reduce the contact rigidity between the latches 2 and the door frame, thereby reducing the contact noise between the latches and the door frame when closing the door.

[0020] Furthermore, the buffer pad 3 protrudes from the edge of the latch 2, so that when the door is closed, the door frame can preferentially contact the buffer pad on the latch 2, thereby buffering the contact between the latch and the door frame.

[0021] Furthermore, the buffer pad 3 can be made of plastic or silicone, which has good buffering performance and wear resistance, meeting the noise reduction requirements of the door lock, and also has a good service life.

[0022] The lock body 1 is provided with a transmission device 11, which includes a lock tongue push plate and a movable plate. The tail end of the lock tongue 2 is provided with a mating hole, and the movable plate 112 is provided with a mating shaft. The lock tongue 2 is connected to the movable plate 112 through the mating hole and the mating shaft, which enables the transmission device 11 to push the lock tongue 2 to extend and retract.

[0023] Furthermore, the latch 2 push plate 111 is V-shaped with a mounting hole at the bottom. The lock body 1 is provided with a mounting shaft. The latch 2 push plate 111 is fixedly installed in the lock body 1 through the mounting hole and the mounting shaft. One end of the latch 2 push plate 111 is inserted into the movable plate 112 at a 45-degree angle, and the other end is placed in the lock body 1. The torsion spring 113 is installed on the lock body 1. One end of the torsion spring 113 is fixed in the movable plate 112, and the other end is fixed in the lock body 1. When the latch 2 is retracted and accommodated inside the retracted lock body, the torsion spring 113 can realize the automatic reset of the latch 2, which meets the usage requirements of the auxiliary lock.

[0024] Furthermore, when the main lock drives the auxiliary lock, the latch 2 push plate 111 can move clockwise around the mounting shaft of the lock body 1 based on the drive of the main lock, thereby driving the movable plate 112 to move into the lock body 1, thereby driving the latch 2 to move into the lock body 1. The two ends of the torsion spring 113 move towards each other, thereby putting the torsion spring 113 in a compressed state. At this time, the door lock can be in an unlocked state. When the main lock stops driving the auxiliary lock, that is, when the latch push plate of the auxiliary lock loses external force, the latch 2 push plate 111 can rotate counterclockwise under the action of the torsion spring, thereby driving the movable plate 112 to reset. The latch 2 can reset and extend outside the lock body 1.

[0025] Specifically, the latch 2 includes a hook 22 and a locking pin 21; the locking pin 21 is provided with a mating groove, and the hook 22 is rotatably connected in the mating groove, so that the hook 22 can flip outward of the locking pin 21. When one end of the latch extending outside the lock body 1 is inserted into the groove of the door frame, the hook 22 can flip outward to realize the self-locking operation of the auxiliary lock and improve the reliability of closing the door.

[0026] Furthermore, a spring is provided between the hook 22 and the locking pin 21. Based on the spring, the hook 22 can provide elastic pressure, so that the hook 22 can fit tightly into the groove of the door frame, thereby improving the reliability of closing and locking the door.

[0027] Furthermore, the bottom surface of the hook 22 protrudes outward to form several protrusion structures, which improves the fit between the latch 2 and the door frame, while increasing the complexity of the mating surface between the latch 2 and the door frame groove, thus improving the anti-pry performance after the door is closed and locked.

[0028] This utility model embodiment provides a self-locking auxiliary lock. By installing a lock tongue with a buffer pad that cooperates with the lock body, the auxiliary lock can reduce the impact with the door frame, reduce the sound of metal collision, thereby reducing the noise of closing the door and improving the user experience.

[0029] Furthermore, the self-locking auxiliary lock provided by the embodiments of this utility model has been described in detail above. Specific examples have been used in this document to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A self-locking supplemental lock, characterized in that, The self-locking auxiliary lock comprises a lock body, a lock bolt arranged on the lock body, and a buffer pad arranged on the lock bolt; The lock bolt is telescopically arranged on the lock body, and the buffer pad is arranged on the part of the lock bolt extending out of the lock body; The lock bolt comprises a hook and a lock pin; the lock pin is internally provided with a matching groove, and the hook is rotationally connected in the matching groove.

2. The self-locking secondary lock according to claim 1, characterized in that A spring is arranged between the hook and the lock pin.

3. The self-locking secondary lock of claim 1, wherein, The bottom surface of the hook is outwardly protruded to form a plurality of bump structures.

4. The self-locking secondary lock of claim 1, wherein, The lock body is internally provided with a transmission device, and the transmission device is drivingly connected with the lock bolt.

5. The self-locking secondary lock according to claim 4, characterized in that The transmission device comprises a lock bolt push plate and a movable plate. The lock body is provided with a mounting shaft, the lock bolt push plate is provided with a mounting hole, and the lock bolt push plate is mounted in the lock body in a manner that the mounting hole is connected with the mounting shaft. One end of the lock bolt push plate is inserted into the movable plate.

6. The self-locking secondary lock according to claim 5, characterized in that The transmission device further comprises a torsion spring, the torsion spring is arranged on the lock body, one end of the torsion spring is fixed in the movable plate, and the other end of the torsion spring is fixed in the lock body.

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