CN109989634B

CN109989634B - Lock tongue and lock catch structure for preventing toggle lock tongue from opening door

Info

Publication number: CN109989634B
Application number: CN201910310039.6A
Authority: CN
Inventors: 苏涛; 詹华山; 李兰
Original assignee: Chongqing Industry Polytechnic College
Current assignee: Chongqing Industry Polytechnic College
Priority date: 2019-04-17
Filing date: 2019-04-17
Publication date: 2023-10-13
Anticipated expiration: 2039-04-17
Also published as: CN109989634A

Abstract

A lock tongue and lock catch structure for preventing a lock tongue from being shifted to open a door comprises a lock body 10, a lock cylinder 11, a decorative ring 12, a knob 13, a positioning hole 14, a lock tongue 20, an inclined plane 21, inclined teeth 22, an inclined plane groove 23, a lock catch 30, an inner cavity 31, a through hole 32, a raised head 33, a positioning block 34 and a round hole 35; the lock is characterized in that one side of the lock body 10 is provided with a lock cylinder 11, the lock cylinder 11 is sleeved with a decorative ring 12, and the other side of the lock body 10 is provided with a knob 13; a positioning hole 14 passes through the lock body 10; the side of the lock body 10 is provided with a bolt sliding hole 15; the inclined surface 21 of the lock tongue 20 is provided with inclined teeth 22, and an inclined surface groove 23 is formed in the middle of the inclined surface 21; the spring in the lock body 10 pushes out the front end of the lock tongue 20, so that the inclined plane 21, the inclined teeth 22 and the inclined plane groove 23 arranged on the lock tongue 20 are exposed; the lock catch 30 is provided with an inner cavity 31, a through hole 32, a raised head 33 and a positioning block 34, and a round hole 35 is arranged in the middle of the positioning block 34; after the built-in lock is adopted to refit the lock tongue and the lock catch, the safety coefficient can be greatly increased.

Description

Lock tongue and lock catch structure for preventing toggle lock tongue from opening door

Technical Field

The invention relates to a lockset, in particular to a lock tongue and a lock catch structure for preventing a lock tongue from being shifted to open a door.

Background

The built-in lock is attractive and safe to install, the safety level of the existing built-in lock is continuously improved for increasing the safety performance, and the built-in lock with fingerprint lock and face recognition is available. However, no matter how high the security level of the lock is, in order to facilitate closing the door, the side of the lock tongue opposite to the opening direction of the door is set to be inclined. An illegal unlocking person can often insert an elastic sheet such as an identity card, a bank card and the like from a closed door lock gap, apply pressure to the inclined plane of the lock tongue back and forth, utilize the lock catch to support the elastic sheet to apply inward retraction pressure to the lock tongue, compress the lock tongue to retract until the lock catch is separated from the constraint of the lock catch, and achieve the aim of opening the door. The method can be effective to a plurality of built-in locks, in particular to a double-leaf wooden vertical hinged door in a public area, if a traditional built-in lock tongue structure is adopted, a metal sheet is not arranged at the position where two doors outwards shield the movement of the lock tongue to prevent a film from unlocking, and the doors can be inserted and opened by the film.

The problem that the lock tongue of the built-in lock is easily pulled out by the elastic sheet exists all the time, and a transverse groove is added on the inclined surface of the lock tongue to block the longitudinal sliding between the card and the lock tongue, so that the card and the lock catch are prevented from forming resultant force, and the lock tongue is retracted backwards. However, the design can influence the smoothness of closing the built-in lock, even the friction coefficient between the transverse groove and the door opening is increased, so that the door leaf with the lock tongue is difficult to close, and the built-in lock with the lock tongue manufactured by the design method is difficult to popularize.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a lock tongue and a lock catch structure for preventing the lock tongue from being shifted to open a door.

The technical scheme adopted by the invention is as follows: a lock tongue and lock catch structure for preventing a lock tongue from being shifted to open a door comprises a lock body, a lock cylinder, a decorative ring, a knob, a positioning hole, a lock tongue, an inclined plane, inclined teeth, an inclined plane groove, a lock catch, an inner cavity, a through hole, a raised head, a positioning block and a round hole; the lock is characterized in that one side of the lock body is provided with a lock core, the lock core is sleeved with a decorative ring, and the other side of the lock body is provided with a knob; the positioning hole penetrates through the lock body; the side surface of the lock body is provided with a lock tongue sliding hole; the inclined plane of the lock tongue is provided with inclined teeth, and an inclined plane groove is formed in the middle of the inclined plane; the spring in the lock body pushes out the front end of the lock tongue, so that the inclined plane, the inclined teeth and the inclined plane groove arranged on the lock tongue are exposed; the lock catch is provided with an inner cavity, a through hole, a raised head and a positioning block, and a round hole is formed in the middle of the positioning block. After the lock body and the lock catch are correctly installed, when the lock tongue on the lock body is aligned with the lock catch, the lock tongue can be pushed into the through hole by the spring in the lock body.

The depth dimension of the depression of the inclined surface groove is smaller than the height dimension of the protrusion of the raised head.

The width dimension of the inclined surface groove is larger than the width dimension of the protruding head.

When the lock tongue on the lock body moves towards the lock catch direction with the inclined plane and contacts with the lock catch, the inclined plane and the inclined teeth on the lock tongue can not contact with any position on the lock catch except the inclined plane groove which can contact with the raised head.

After the spring in the lock is pushed into the through hole, the spring cannot be pulled back by pressing the spring from any direction by adopting the elastic steel sheet, so that the spring is separated from the constraint of the through hole; the spring in the lock applies an outward thrust to the lock tongue which is not more than gram, and when the lock tongue receives a thrust in the opposite direction to the spring in the lock, the thrust is more than the outward thrust applied to the lock tongue by the spring, the lock tongue can retract into the lock.

By adopting the technical scheme of the invention, the method has the following beneficial effects:

1. the grooves arranged on the lock tongue can prevent the elastic sheet from applying backward retreating force to the lock tongue from any angle, and the technology can greatly improve the safety of the traditional lockset;

2. the invention has simple processing technique, easy processing and convenient popularization;

3. the invention is suitable for replacement installation on the low-end built-in lock, basically does not increase production cost, and the safety coefficient of the built-in lock optimized by adopting the invention can be greatly increased.

Drawings

FIG. 1 is a perspective view of the present invention (with the lock separated from the shackle);

FIG. 2 is a perspective view of the present invention (with the lock separated from the shackle);

FIG. 3 is a perspective view of the present invention (the state where the bolt on the lock is about to enter the through hole on the shackle);

FIG. 4 is a perspective view of the present invention (after a locking bolt on a lock has entered a through hole in a shackle);

in the figure: 10-lock body, 11-lock cylinder, 12-decorative ring, 13-knob, 14-locating hole, 15-bolt sliding hole, 20-bolt, 21-inclined plane, 22-inclined tooth, 23-inclined plane groove, 30-lock catch, 31-inner cavity, 32-through hole, 33-protruding head, 34-locating block and 35-round hole.

Detailed Description

The invention is further illustrated by the following figures and examples: as shown in fig. 1 to 4, a lock tongue and lock catch structure for preventing a lock tongue from being shifted to open a door comprises a lock body 10, a lock cylinder 11, a decorative ring 12, a knob 13, a positioning hole 14, a lock tongue 20, an inclined surface 21, inclined teeth 22, an inclined surface groove 23, a lock catch 30, an inner cavity 31, a through hole 32, a raised head 33, a positioning block 34 and a round hole 35; the lock is characterized in that one side of the lock body 10 is provided with a lock cylinder 11, the lock cylinder 11 is sleeved with a decorative ring 12, and the other side of the lock body 10 is provided with a knob 13; a positioning hole 14 passes through the lock body 10; the side of the lock body 10 is provided with a bolt sliding hole 15; the inclined surface 21 of the lock tongue 20 is provided with inclined teeth 22, and an inclined surface groove 23 is formed in the middle of the inclined surface 21; the spring in the lock body 10 pushes out the front end of the lock tongue 20, so that the inclined plane 21, the inclined teeth 22 and the inclined plane groove 23 arranged on the lock tongue 20 are exposed; the lock catch 30 is provided with an inner cavity 31, a through hole 32, a raised head 33 and a positioning block 34, and a round hole 35 is arranged in the middle of the positioning block 34. After the lock body 10 is properly mounted with the shackle 30, when the locking tongue 20 on the lock body 10 is aligned with the shackle 30, the locking tongue 20 is pushed into the through hole 32 by the spring in the lock body 10.

The depth dimension of the depression of the bevel groove 23 is smaller than the height dimension of the protrusion of the nose 33.

The width dimension of the bevel groove 23 is larger than the width dimension of the protrusion of the nose 33.

When the lock tongue 20 on the lock body 10 moves towards the lock catch 30 with the inclined surface 21 and contacts, the inclined surface 21 and the inclined teeth 22 on the lock tongue 20 are not contacted with any part on the lock catch 30 except the inclined surface groove 23 which can contact with the convex head 33.

After the lock tongue 20 is pushed into the through hole 32 by the spring in the lock, the spring steel sheet is adopted to press the lock tongue 20 from any direction, the lock tongue 20 cannot be pulled back, and the lock tongue 20 is separated from the constraint of the through hole 32; the spring inside the lock applies an outward thrust to the lock tongue 20 of not more than 150 g, and when the lock tongue 20 receives a thrust in a direction opposite to the spring inside the lock, and the thrust is greater than the spring applying an outward thrust to the lock tongue 20, the lock tongue 40 will retract into the lock.

The grooves arranged on the lock tongue can prevent the elastic sheet from applying backward retreating force to the lock tongue from any angle, and the technology can greatly improve the safety of the traditional lockset; the invention has simple processing technique, easy processing and convenient popularization; the invention is suitable for replacement installation on the low-end built-in lock, basically does not increase production cost, and the safety coefficient of the built-in lock optimized by adopting the invention can be greatly increased.

The above examples of the present invention are illustrative of exemplary embodiments of the present invention and are not intended to be limiting of the embodiments of the present invention. Obvious variations that result from the prompts of the embodiments of the invention are still within the scope of the claims of the invention.

Claims

1. The utility model provides a prevent stirring spring bolt and hasp integrated configuration that spring bolt opened door, includes lock body (10), lock core (11), decorative ring (12), knob (13), locating hole (14), spring bolt (20), inclined plane (21), skewed tooth (22), inclined plane groove (23), hasp (30), inner chamber (31), through-hole (32), protruding head (33), locating piece (34), round hole (35); the lock is characterized in that a lock core (11) is arranged on one surface of the lock body (10), a decorative ring (12) is sleeved on the lock core (11), and a knob (13) is arranged on the other surface of the lock body (10); a positioning hole (14) penetrates through the lock body (10); the side surface of the lock body (10) is provided with a lock tongue sliding hole (15); inclined teeth (22) are arranged on the inclined surface (21) of the lock tongue (20), and an inclined surface groove (23) is formed in the middle of the inclined surface (21); the front end of the lock tongue (20) is pushed out by a spring in the lock body (10), so that an inclined plane (21), inclined teeth (22) and an inclined plane groove (23) arranged on the lock tongue (20) are exposed; the lock catch (30) is provided with an inner cavity (31), a through hole (32), a raised head (33) and a positioning block (34), and a round hole (35) is formed in the middle of the positioning block (34): when a lock tongue (20) on a lock body (10) moves towards a lock catch (30) in a way of an inclined plane (21) and contacts with the lock catch, the inclined plane (21) and an inclined tooth (22) on the lock tongue (20) can not contact with any part on the lock catch (30) except an inclined plane groove (23) which can contact with a raised head (33); the spring in the lock is not more than 150 g of outward thrust to the lock tongue (20), and when the lock tongue (20) receives the thrust of opposite direction with the spring in the lock, and this thrust is greater than the spring and is exerted outward thrust to the lock tongue (20), the lock tongue (20) can be back in the lock.

2. The combination lock tongue and shackle of claim 1, wherein after the lock body (10) and the shackle (30) are properly installed, after the lock tongue (20) on the lock body (10) is aligned with the shackle (30), the lock tongue (20) is pushed into the through hole (32) by the spring in the lock body (10).

3. The combination structure of a bolt and a buckle for preventing a toggle bolt from opening a door according to claim 1, wherein the depth dimension of the depression of the inclined surface groove (23) is smaller than the protruding height dimension of the raised head (33).

4. The combination structure of a bolt and a buckle for preventing a toggle bolt from opening a door according to claim 2, wherein the width dimension of the inclined surface groove (23) is larger than the protruding width dimension of the raised head (33).

5. The combination structure of a bolt and a lock catch for preventing a bolt from being shifted to open a door according to claim 1, wherein after the bolt (20) is pushed into the through hole (32) by a spring in the lock, the bolt (20) is pressed by adopting an elastic steel sheet from any direction, the bolt (20) cannot be pulled back, and the bolt (20) is separated from the constraint of the through hole (32).