A door lock

Abstract

The application discloses a door lock, relates to a lock, and improves the structural strength and machining of a split type door lock locking structure, and comprises a lock base and a lock cover hinged at one end of the lock base, one end of the lock cover is hinged with a handle, and the side of the lock cover facing the lock base is further hinged with a lock block; the lock block comprises a lock body, a lock hook located at one end of the lock body and a disengaging hook located at the other end of the lock body; a lock hole for the lock hook to be buckled and locked is formed in the lock base, a linkage groove for the disengaging hook to be inserted is formed in one end of the handle close to the disengaging hook, and the disengaging hook is always located in the linkage groove; when the handle end of the handle is turned upward, the other end of the handle pushes the disengaging hook to turn downward through the linkage groove, and the lock hook is turned toward the direction of being separated from the lock hole. The application improves the structural strength of the lock, reduces the number of parts, and simplifies the machining process.

Description

Technical Field

[0001] This application relates to a lock, and more particularly to a door lock. Background Technology

[0002] Currently, door locks are mainly used on the doors of box trucks, truck bodies, containers, etc. The lock is installed on the door to unlock and lock the door.

[0003] The door lock mainly includes a lock base and a lock cover hinged to the lock base. A lock hook is fixed on the lock cover, and a latch is hinged to the lock base for engaging with the lock hook on the lock cover. In addition, the lock base also has a lock cylinder and a bolt controlled by the lock cylinder, which locks the lock cover in place after it is closed. Refer to Chinese Utility Model Patent CN202223256024.2 for a door lock structure.

[0004] However, the split hook and lock structure commonly used in existing technologies has relatively low structural strength. Furthermore, manufacturing two separate parts, the hook and lock, increases processing steps and costs. Utility Model Content

[0005] In order to improve the structural strength and manufacturing problems of split-type door lock locking structures, this application provides a door lock.

[0006] This application provides a door lock, which adopts the following technical solution:

[0007] A door lock includes a lock base and a lock cover hinged to the lock base at one end. A handle is hinged to one end of the lock cover, and a lock block is also hinged to the side of the lock cover facing the lock base. The lock block includes a lock body, a lock hook at one end of the lock body, and a release hook at the other end of the lock body. The lock base has a lock hole for the lock hook to engage and lock. The handle has a linkage groove near the release hook for the release hook to be inserted, and the release hook is always located in the linkage groove. When the handle's grip end is rotated upwards, the other end of the handle pushes the release hook downwards through the linkage groove, causing the lock hook to rotate in the direction of disengaging from the lock hole. An elastic element is also provided between the lock cover and the lock block, and the elastic element acts on the lock block, causing the lock hook to always rotate in the locking direction.

[0008] By adopting the above technical solution, the lock block integrates the lock hook and release hook structure, which improves the structural strength and reduces the number of parts and processing costs compared with the existing separate hook and lock hook structure. The release hook is driven by rotating the handle to disengage the lock hook from the key hole, realizing convenient unlocking operation. The elastic element ensures that the lock hook always rotates in the locking direction, which enhances the door lock's security and reliability, and can automatically maintain the locked state when the handle is not operated by external force.

[0009] Optionally, the lock body is provided with a hinge hole, and the inner side of the lock cover is provided with a rotating shaft that matches the hinge hole. The lock body is connected to the rotating shaft through the hinge hole to form a rotational connection between the lock block and the lock cover.

[0010] By adopting the above technical solution, this connection method has a simple structure, is easy to install, and can ensure that the lock block can rotate flexibly relative to the lock cover.

[0011] Optionally, the elastic element includes a spring sheet, two force-bearing plates of the spring sheet and a retaining sleeve connecting the two force-bearing plates. The retaining sleeve is fitted onto the rotating shaft. The force-bearing plate of the spring sheet acts on the lock cover, and the other force-bearing plate acts on the end of the lock seat near the lock hook, driving the lock hook to rotate away from the lock cover.

[0012] By adopting the above technical solution, the spring is fitted onto the rotating shaft through the structure of two force-bearing plates and a retainer, which can provide a stable and appropriate elastic force to the lock block, ensuring that the lock hook always rotates in the direction away from the lock cover, thus achieving a reliable locking function.

[0013] Optionally, a lock cylinder is fixed on the lock cover, a lock tongue is connected to the end of the lock cylinder, and a boss extends from one end of the lock hook of the lock seat for the lock tongue to rotate and lock.

[0014] By adopting the above technical solution, the rotation of the bolt is controlled by the lock cylinder, thereby controlling the locking and unlocking of the door lock and increasing the security of the door lock.

[0015] Optionally, the lock body, lock hook, release hook, and boss are integrally formed.

[0016] By adopting the above technical solutions, the number of parts was further reduced, and the processing steps and costs were lowered.

[0017] Optionally, a connecting lug is fixed near the pivot of the lock body. The connecting lug extends away from the hook and has a connecting hole.

[0018] By adopting the above technical solution, one end of the spring connecting the lock seat and the lock cover can be directly connected to the connection hole, which provides convenience for the connection of the spring. On the other hand, the inclined spring tension formed by the spring connecting the lock seat and the lock cover will further drive the rotation toward the locked position.

[0019] Optionally, the middle part of the lock body has a hollow structure, the pivot passes through the hollow part of the lock body, and the spring is located at the hollow position of the lock body.

[0020] By adopting the above technical solution, the lock body adopts a hollow structure in the middle, which reduces the weight of the lock body and is conducive to the lightweight design of the door lock; the pivot passes through the hollow part of the lock body, and the spring is located at the hollow position of the lock body, making full use of the internal space of the lock body, making the layout of the various components of the door lock more compact and reasonable, and improving the space utilization rate.

[0021] In summary, this application has the following beneficial effects:

[0022] The lock adopts an integrated design that combines the locking block with the locking hook and the release hook. The lock body, locking hook, release hook and boss can be formed as one piece. Compared with the existing separate hook and locking hook structure, it improves the structural strength, reduces the number of parts and simplifies the processing steps. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0024] Figure 2 This is an exploded view of an embodiment of this application;

[0025] Figure 3 This is a schematic diagram illustrating the internal components of the lock cover in an embodiment of this application;

[0026] Figure 4 This is a cross-sectional schematic diagram of an embodiment of this application;

[0027] Figure 5 This is a schematic diagram illustrating the connection between the handle and the lock seat in an embodiment of this application;

[0028] Figure 6 This is an exploded schematic diagram illustrating the lock seat in an embodiment of this application.

[0029] Explanation of reference numerals in the attached diagram: 1. Lock base; 2. Lock cover; 3. Handle; 4. Hinge rod; 5. Lock block; 6. Lock body; 7. Lock hook; 8. Unhooking; 9. Hinge hole; 10. Rotating shaft; 11. Lock hole; 12. Linkage groove; 13. Spring piece; 14. Force-bearing piece; 15. Sleeve; 16. Limiting ring; 17. Annular groove; 18. Lock cylinder; 19. Lock tongue; 20. Boss; 21. Connecting ear; 22. Connecting hole. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] This application discloses a door lock. (Refer to...) Figure 1 , 2 The door lock includes a lock base 1 and a lock cover 2. One end of the lock cover 2 is connected to the lock base 1 through a hinge structure, so that the lock cover 2 can rotate relative to the lock base 1, thereby realizing the opening and closing action of the door lock.

[0032] Reference Figure 2 , 3 One end of the lock cover 2 is hinged to a handle 3. The door lock can be unlocked by rotating the handle 3. One end of the handle 3 extends into the lock cover 2 through a hinge rod 4, forming a rotatable connection with the lock cover 2. A lock block 5 is also hinged to the side of the lock cover 2 facing the lock seat 1. The lock block 5 includes a lock body 6, a lock hook 7, and a release hook 8. The lock hook 7 is located at the end of the lock body 6 near the handle 3, and the release hook 8 is located at the other end of the lock body 6.

[0033] Reference Figure 4 , 5 In order to achieve a rotating connection between the lock block 5 and the lock cover 2, a hinge hole 9 is provided on the lock body 6. Correspondingly, a rotating shaft 10 matching the hinge hole 9 is provided on the inner side of the lock cover 2. The lock body 6 is sleeved on the rotating shaft 10 through the hinge hole 9, thereby forming a stable rotating connection structure between the lock block 5 and the lock cover 2, ensuring that the lock block 5 can rotate flexibly.

[0034] Reference Figure 2 , 3 The lock base 1 has a lock hole 11, which engages with the lock hook 7 on the lock block 5. When the lock hook 7 is engaged in the lock hole 11, the door lock is locked. A linkage groove 12 is provided at the end of the handle 3 near the release hook 8. The release hook 8 is always located in the linkage groove 12, forming a linkage relationship between the handle 3 and the lock block 5. When unlocking is required, the grip end of the handle 3 is rotated upwards. At this time, the other end of the handle 3 pushes the release hook 8 downwards through the linkage groove 12, thereby causing the entire lock block 5 to rotate around the pivot 10 connected to the lock cover 2, causing the lock hook 7 to rotate in the direction of disengaging from the lock hole 11, ultimately achieving unlocking.

[0035] Reference Figure 4 , 5 In order to ensure that the door lock remains locked when not in operation, an elastic element is provided between the lock cover 2 and the lock block 5. The elastic element continuously acts on the lock block 5, so that the lock hook 7 always tends to rotate in the locking direction.

[0036] Specifically, the elastic element can be a spring plate 13, which consists of two force-bearing plates 14 and a retaining sleeve 15 connecting the two force-bearing plates 14. The retaining sleeve 15 is fitted onto the rotating shaft 10 connecting the lock block 5 and the lock cover 2. One force-bearing plate 14 acts on the lock cover 2, while the other force-bearing plate 14 acts on the end of the lock block 5 near the lock hook 7. Through the elastic force of the spring plate 13, the lock hook 7 is driven to rotate away from the lock cover 2, that is, always rotate towards the lock hole 11 on the lock seat 1, ensuring that the lock hook 7 can be stably engaged in the lock hole 11. The middle part of the lock body 6 can adopt a hollow structure. The rotating shaft 10 inside the lock cover 2 passes through the hollow part of the lock body 6, and the spring plate 13 is also located at the hollow position of the lock body 6.

[0037] Reference Figure 6 In order to limit the locking block 5, two limiting rings 16 are fitted on the rotating shaft 10. The rotating shaft 10 has an annular groove 17 for the limiting rings 16 to engage. The two limiting rings 16 are respectively engaged in the annular groove 17 of the rotating shaft 10 at both ends of the hollow structure, thus limiting the locking seat 1.

[0038] Reference Figure 3 , 4 To further enhance the security of the door lock, a lock cylinder 18 is fixedly installed on the lock cover 2. A bolt 19 is connected to the end of the lock cylinder 18, and the bolt 19 can rotate under the control of the lock cylinder 18. Correspondingly, a boss 20 extends from one end of the lock seat 1 at the lock hook 7. The boss 20 is used for the bolt 19 to rotate and lock. When the bolt 19 rotates onto the boss 20, it can further lock the position of the lock cover 2, preventing the door lock from being opened at will.

[0039] Reference Figure 6 In order to simplify the structure of the door lock, reduce the number of parts, and lower the processing cost, the lock body 6, lock hook 7, release hook 8 and boss 20 can adopt an integral molding structure and be processed by one-time molding process. This not only improves the connection strength between the components, but also simplifies the production process.

[0040] Reference Figure 5 A connecting lug 21 is fixed near the pivot 10 on the lock body 6. The connecting lug 21 extends away from the release hook 8 and has a connecting hole 22. This connecting hole 22 can be used to connect components such as springs. For example, when a spring is connected between the lock seat 1 and the lock cover 2, one end of the spring can be connected to this connecting hole 22. The tension of the spring not only helps the lock cover 2 to reset, but the resulting tilting tension can also further drive the lock block 5 to rotate toward the locked position, enhancing the reliability of the door lock.

[0041] The implementation principle of a door lock according to an embodiment of this application is as follows:

[0042] When unlocking, first use a key or other tool to control the rotation of the lock cylinder 18, so that the bolt 19 disengages from the boss 20. Then, rotate the handle 3 upwards. Through the linkage between the handle 3 and the lock block 5, the lock hook 7 disengages from the keyhole 11, thus unlocking the lock. The operation is convenient and efficient.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A door lock, comprising a lock base (1) and a lock cover (2) hinged at one end to the lock base (1), characterized in that: One end of the lock cover (2) is hinged to a handle (3), and the lock cover (2) is also hinged to a lock block (5) on the side facing the lock seat (1). The lock block (5) includes a lock body (6), a lock hook (7) at one end of the lock body (6), and a release hook (8) at the other end of the lock body (6). The lock seat (1) is provided with a lock hole (11) for the lock hook (7) to engage and lock. The handle (3) is provided with a linkage groove (12) for the release hook (8) to be inserted at the end near the release hook (8). The release hook (8) is always located in the linkage groove (12). When the grip end of the handle (3) is rotated upward, the other end of the handle (3) pushes the release hook (8) downward through the linkage groove (12), so that the lock hook (7) rotates in the direction of disengaging from the lock hole (11). An elastic element is also provided between the lock cover (2) and the lock block (5). The elastic element acts on the lock block (5) so that the lock hook (7) always rotates in the locking direction.

2. A door lock according to claim 1, characterized in that: The lock body (6) has a hinge hole (9), and the inner side of the lock cover (2) has a rotating shaft (10) that matches the hinge hole (9). The lock body (6) is connected to the rotating shaft (10) through the hinge hole (9) to form a rotating connection between the lock block (5) and the lock cover (2).

3. A door lock according to claim 2, characterized in that: The elastic element includes a spring sheet (13), two force-bearing pieces (14) of the spring sheet (13) and a retainer (15) connecting the two force-bearing pieces (14). The retainer (15) is fitted onto the rotating shaft (10). The force-bearing piece (14) of the spring sheet (13) acts on the lock cover (2), and the other force-bearing piece (14) acts on the end of the lock seat (1) near the lock hook (7), driving the lock hook (7) to rotate away from the lock cover (2).

4. A door lock according to claim 1, characterized in that: A lock cylinder (18) is fixed on the lock cover (2), and a lock tongue (19) is connected to the end of the lock cylinder (18). The lock seat (1) extends from one end of the lock hook (7) with a boss (20) for the lock tongue (19) to rotate and lock.

5. A door lock according to claim 4, characterized in that: The lock body (6), lock hook (7), release hook (8) and boss (20) are integrally formed structures.

6. A door lock according to claim 2, characterized in that: The lock body (6) is also fixed with a connecting ear (21) near the pivot (10). The connecting ear (21) extends away from the hook (8) and has a connecting hole (22).

7. A door lock according to claim 3, characterized in that: The middle part of the lock body (6) is hollow, the pivot (10) passes through the hollow part of the lock body (6), and the spring piece (13) is located at the hollow position of the lock body (6).

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