Self-locking emergency function lock body

Abstract

The utility model relates to the technical field of safety and locks, provides a self-locking type emergency function lock body, and aims to solve the problem that an existing double-insertion type emergency function lock is easy to be illegally opened when being externally damaged and improve the safety of the lock. The lock body comprises a lock shell, a bolt, a rotating table, a lock cylinder and other assemblies. The lock shell is designed to be of an n-shaped structure, a lock cylinder is arranged in the middle, and locking cylinders are arranged on the two sides. In the damage state, the damage face of the lock shell is broken, the bolt is disengaged, then the internal structure is triggered to be automatically locked, and the lock is prevented from being easily opened. In addition, the lock body adopts an MIN integral forming design, so that replacement and maintenance of parts are facilitated, the maintenance cost is reduced, and the overall safety and reliability of the lock are improved. The lock body is suitable for various occasions such as household anti-theft doors, fireproof doors and fire fighting access doors, and the safety performance of the occasions is effectively enhanced.

Description

Technical Field

[0001] The utility model relates to the technical fields of safety and locks, and particularly relates to a self-locking emergency function lock body. Background Art

[0002] In the existing technical field of safety locks, double-insert emergency function locks are widely used, which allow users to insert keys from both ends for operation.

[0003] In the existing design, the double-insert emergency function lock has an obvious security vulnerability: when the outside of the lock body is damaged, since there may be a key inserted inside, the destroyer can easily open the lock by rotating the internal key, which seriously threatens personal safety and property safety. Summary of the Utility Model

[0004] To solve the problems in the background art, overcome the deficiencies of the prior art, and improve the security of the lock, the utility model proposes a design of a self-locking emergency function lock body. This lock body design aims to solve the problem that the existing locks are easily opened when damaged. Through an innovative structural design, the lock body can automatically lock when damaged, thus effectively preventing the lock from being illegally opened. This design not only improves the security performance of the lock, but also simplifies the process of replacing and maintaining components and reduces the maintenance cost by adopting the MIN one-piece forming design. In addition, this lock body design is applicable to various occasions, including household anti-theft doors, fire doors, fire escape doors, etc., and can significantly enhance the security performance of these occasions.

[0005] The utility model provides a self-locking emergency function lock body, which includes: a lock shell, and both sides of the lock shell are provided with bolts, a rotating table B, and a rotating table A;

[0006] The lock shell is an n-shaped structure, and it is provided with locking cylinders on the left and right sides, and a lock core is installed between the locking cylinders;

[0007] The rotating table B is provided with a sliding track, a through hole A, and a convex platform A. A short column A that is in clearance fit with the through hole A is arranged in the through hole A, and the bolt is provided with a convex platform B that is in contact connection with the short column A;

[0008] The lock shell is provided with a through hole B in the vertical direction. A limiting column B that is in interference fit with the through hole B is arranged in the through hole B. A third spring and a long column are installed below the limiting column B. The third spring provides a downward pressure on the long column, so that the long column abuts against the short column A.

[0009] In a preferred solution, the rotating table A is provided with a sliding table connected to the sliding track.

[0010] In a preferred embodiment, the rotating table A is provided with a stepped hole A and a stepped hole B. A long stepped shaft is installed in the stepped hole B, and a first spring is sleeved on the middle thin shaft part of the long stepped shaft. A large through hole is provided in the center of the lock core, and a stepped hole C and a stepped hole D are respectively provided on both sides of the large through hole. The long stepped shaft and the first spring pass through the large through hole, and both ends of the long stepped shaft are respectively installed in the stepped hole B of the rotating table A on both sides. Limit posts A, a second spring, and a short stepped shaft are installed in both the stepped hole C and the stepped hole D. The second spring provides pressure to the short stepped shaft, so that the stepped part of the short stepped shaft abuts against the inside of the stepped hole C and the stepped hole D. The short stepped shaft can be connected to or separated from the stepped hole A.

[0011] In a preferred embodiment, the bolt includes a notch fixed to the boss A.

[0012] In a preferred embodiment, the lock case is provided with a through hole C in the horizontal direction. A limit post C, a fourth spring, and a short post B are arranged in the through hole C. The limit post C is in interference fit with the through hole C. The rear end of the fourth spring is fixedly connected to the limit post C, and the front end provides forward pressure to the short post B, so that the short post B abuts against the long post.

[0013] The beneficial effects achieved by the present utility model are as follows:

[0014] First, the design of the rotating table A and the rotating table B, as well as the cooperation between the lock core and the bolt, provide a reliable locking and unlocking mechanism, enhancing the overall performance of the lock body.

[0015] Second, through the design, when the lock body is damaged externally, the lock body can automatically enter the locked state to prevent the lock from being opened, thereby improving the security of the lock.

[0016] Third, adopting the MIN integrated molding design, each component of the lock body is easy to replace and maintain, reducing the maintenance cost and improving the service life and reliability of the lock.

[0017] Fourth, this design is applicable to various occasions, such as household anti-theft doors, fire doors, fire escape doors, etc., enhancing the safety performance of these occasions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is an exploded view of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 3 is a schematic diagram of the lock core structure;

[0021] Figure 4 is a sectional view of the connection structure of the lock core and the rotating table A and the rotating table B;

[0022] Figure 5 Yes Figure 1 Schematic cross-sectional view of the through hole C in the horizontal direction;

[0023] Figure 6 Yes Figure 5 Enlarged view of the structure at E in

[0024] Reference numerals in the figure:

[0025] 1. Rotary table A; 1-1. Sliding table; 1-2. Step hole A; 1-3. Step hole B; 1-4. Short step shaft; 1-5. Long step shaft; 1-6. First spring; 1-7. Second spring; 1-8. Limit post A; 2. Rotary table B; 2-1. Sliding track; 2-2. Through hole A; 2-3. Boss A; 3. Lock housing; 3-1. Through hole B; 4. Bolt; 4-1. Notch; 4-2. Boss B; 5. Short post A; 5-1. Long post; 5-2. Third spring; 5-3. Limit post B; 6. Lock core; 6-1. Large through hole; 6-2. Step hole C; 6-3. Step hole D; 7. Limit post C; 8. Through hole C; 10. Short post B; 11. Fourth spring. Detailed implementation mode

[0026] Next, the technical solutions in the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the present utility model. In addition, the forms of the respective structures described in the following embodiments are merely examples, and the present utility model is not limited to the respective structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0027] Refer to Figures 1 - 6 , a self-locking emergency function lock body provided by the present utility model includes: a lock housing 3, and bolts 4, a rotary table B 2 and a rotary table A 1 are installed on both sides of the lock housing 3; the lock housing 3 is an n-shaped structure, and it is provided with locking cylinders on the left and right sides, and a lock core 6 is installed between the locking cylinders.

[0028] The rotary table B 2 is provided with a sliding track 2-1, a through hole A 2-2 and a boss A 2-3. A short post A 5 that is in clearance fit with the through hole A 2-2 is arranged in the through hole A 2-2, and the bolt 4 is provided with a boss B 4-2 that is in contact connection with the short post A 5;

[0029] The lock housing 3 is provided with a through hole B 3-1 in the vertical direction. A limit post B 5-3 that is in interference fit with the through hole B 3-1 is arranged in the through hole B 3-1. A third spring 5-2 and a long post 5-1 are installed below the limit post B 5-3. The third spring 5-2 provides a downward pressure on the long post 5-1, so that the long post 5-1 abuts against the short post A 5.

[0030] The rotating table A1 is provided with a sliding table 1-1 connected to the sliding track 2-1. The rotating table A1 is provided with a stepped hole A1-2 and a stepped hole B1-3. A long stepped shaft 1-5 is installed in the stepped hole B1-3. A first spring 1-6 is sleeved and installed on the middle thin shaft part of the long stepped shaft 1-5. A large through hole 6-1 is provided in the central part of the lock core 6. A stepped hole C6-2 and a stepped hole D6-3 are respectively provided on both sides of the large through hole 6-1. The long stepped shaft 1-5 and the first spring 1-6 pass through the large through hole 6-1. The two ends of the long stepped shaft 1-5 are respectively installed in the stepped holes B1-3 of the rotating table A1 on both sides. Limit posts A1-8, a second spring 1-7 and a short stepped shaft 1-4 are installed in both the stepped hole C6-2 and the stepped hole D6-3. The second spring 1-7 provides pressure to the short stepped shaft 1-4, so that the stepped part of the short stepped shaft 1-4 abuts against the inside of the stepped holes C6-2 and D6-3. The short stepped shaft 1-4 can be connected or separated from the stepped hole A1-2.

[0031] The bolt 4 includes a notch 4-1 fixed to the boss A2-3. The lock case 3 is provided with a through hole C8 in the horizontal direction. A limit post C7, a fourth spring 11 and a short post B10 are arranged in the through hole C8. The limit post C7 is in interference fit with the through hole C8. The rear end of the fourth spring 11 is fixedly connected to the limit post C7, and the front end provides a forward pressure to the short post B10, so that the short post B10 abuts against the long post 5-1.

[0032] Under normal conditions: The notch 4-1 on the bolt 4 is connected to the boss A2-3 of the rotating table B2. The sliding track 2-1 of the rotating table B2 is connected to the sliding table 1-1 of the rotating table A1. A first spring 1-6 is sleeved and installed on the middle thin shaft part of the long stepped shaft 1-5 of the rotating table A1. The long stepped shaft 1-5 and the first spring 1-6 pass through the large through hole 6-1. The two ends of the long stepped shaft 1-5 are respectively installed in the stepped holes B1-3 of the rotating table A1 on both sides, realizing the common rotation of the bolt 4, the rotating table B2 and the rotating table A1 on both sides, and the lock core 6 remains stationary.

[0033] There is a short post A5 with the same thickness as the rotating table B2 in the through hole A2-2 of the rotating table B2. The short post A5 abuts against the boss B4-2 of the bolt 4.

[0034] Under the operating state: When the key is inserted into the bolt 4, it pushes the rotating table A1 and the rotating table B2 forward. When the end faces of the rotating table A1 and the lock core 6 coincide, the key cannot be pushed forward. The stepped hole A1-2 of the rotating table A1 enters the short stepped shaft 1-4 of the lock core 6. At this time, when the key is rotated, the lock core 6, the rotating table A1, the rotating table B2 and the bolt 4 rotate together to achieve the purpose of unlocking.

[0035] In the damaged state: The lock housing 3 breaks at the damaged surface, the bolt 4 will be disengaged, and after the bolt 4 is disengaged, the short column A5 falls off. At this time, the third spring 5-2 expands and contracts, and under the action of the third spring 5-2, the long column 5-1 enters the through hole A2-2, and the rotating table B2 is fixed and cannot rotate, and the lock body is locked. After the long column 5-1 falls, the short column B10 moves forward under the action of the fourth spring 11 to prevent the long column 5-1 from being opened upward.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-locking emergency function lock body, characterized in that, It includes: A lock housing (3), on both sides of which are installed bolts (4), a rotating table B (2) and a rotating table A (1); The lock housing (3) is of an n-shaped structure, which is provided with locking cylinders on its left and right sides, and a lock core (6) is installed between the locking cylinders; The rotating table B (2) is provided with a sliding track (2-1), a through hole A (2-2) and a boss A (2-3). A short column A (5) that is in clearance fit with the through hole A (2-2) is arranged in the through hole A (2-2), and the bolt (4) is provided with a boss B (4-2) that is in contact connection with the short column A (5); The lock housing (3) is provided with a through hole B (3-1) in the vertical direction. A limit post B (5-3) that is in interference fit with the through hole B (3-1) is arranged in the through hole B (3-1). A third spring (5-2) and a long column (5-1) are installed below the limit post B (5-3). The third spring (5-2) provides a downward pressure on the long column (5-1) to make the long column (5-1) abut against the short column A (5).

2. The self-locking emergency function lock body according to claim 1, characterized in that: The rotating table A (1) is provided with a sliding table (1-1) connected to the sliding track (2-1).

3. The self-locking emergency function lock body according to claim 1, characterized in that: The rotating table A (1) is provided with a stepped hole A (1-2) and a stepped hole B (1-3). A long stepped shaft (1-5) is installed in the stepped hole B (1-3). A first spring (1-6) is sleeved and installed on the middle thin shaft part of the long stepped shaft (1-5); A large through hole (6-1) is provided in the central part of the lock core (6), and a stepped hole C (6-2) and a stepped hole D (6-3) are respectively provided on both sides of the large through hole (6-1); The long stepped shaft (1-5) and the first spring (1-6) pass through the large through hole (6-1). The two ends of the long stepped shaft (1-5) are respectively installed in the stepped holes B (1-3) of the rotating table A (1) on both sides. Limit posts A (1-8), a second spring (1-7) and a short stepped shaft (1-4) are installed in both the stepped hole C (6-2) and the stepped hole D (6-3). The second spring (1-7) provides a pressure on the short stepped shaft (1-4) to make the stepped part of the short stepped shaft (1-4) abut against the inside of the stepped hole C (6-2) and the stepped hole D (6-3); The short stepped shaft (1-4) can be connected or separated from the stepped hole A (1-2).

4. The self-locking emergency function lock body according to claim 1, wherein: The bolt (4) includes a notch (4-1) fixed to the boss A (2-3).

5. The self-locking emergency function lock body according to claim 1, characterized in that: The lock housing (3) is provided with a through hole C (8) in the horizontal direction. A limit post C (7), a fourth spring (11) and a short column B (10) are arranged in the through hole C (8). The limit post C (7) is in interference fit with the through hole C (8). The rear end of the fourth spring (11) is fixedly connected to the limit post C (7), and the front end provides a forward pressure on the short column B (10) to make the short column B (10) abut against the long column (5-1).

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