Switch lock

Abstract

The utility model discloses a switch lock, and relates to the technical field of locks. Comprising a plastic lock cylinder and a clamping base, the plastic lock cylinder is detachably installed on a bottom shell, the clamping base is integrally formed on a face shell matched with the bottom shell, a lock cylinder assembly is arranged at one end of the plastic lock cylinder, and a hook and a reset elastic piece located on one side of the hook are arranged on the lock cylinder assembly. A metal lock cylinder is replaced by a plastic lock cylinder, direct insertion type clamping connection of a buckle, a clamping hole and a lock cylinder assembly is combined, bolt fixing and a multi-stage transmission structure are omitted, the number of parts is greatly reduced, the material cost is reduced, the machining process is simplified through the plastic integrated forming technology, a guide inclined face at the top of a clamping base is linked with a reset elastic piece, and the machining efficiency is improved. The hook automatically avoids, rebounds and locks when the face shell is closed, manual intervention is reduced, the stroke limiting groove and the stroke limiting rod are matched to precisely limit the rotation angle of the lock cylinder, the reset elastic piece is prevented from being excessively bent and broken, the structure is simple and compact, economic benefits are met, and the application prospect is wide.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to a switch lock. Background Technology

[0002] Locks are devices that serve a sealing function, including locks, keys, and their accessories. They are generally defined as "sealing devices that can only be opened with a key." Besides keys, locks can also be opened using light, electricity, magnetism, sound, and fingerprint signals. Locks are not only protective devices but also serve management and decorative purposes.

[0003] Mechanical locks on the market have complex structures, often relying on metal lock cylinders and multi-stage transmission structures, resulting in redundant parts and high processing costs. They are not suitable for simple locking scenarios with low security requirements, such as drawers and cabinets in homes, and their performance is unsatisfactory. Summary of the Invention

[0004] This invention provides a switch lock to solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a switch lock, including a plastic lock cylinder and a card holder, wherein the plastic lock cylinder is detachably installed on the bottom shell, the card holder is integrally formed on the front shell that matches the bottom shell, one end of the plastic lock cylinder is provided with a lock cylinder assembly, and the lock cylinder assembly is provided with a hook and a reset spring located on one side of the hook.

[0006] Furthermore, a limiting plate is provided on one side of the bottom shell, which abuts against one end of the reset spring.

[0007] Furthermore, the lock cylinder assembly is provided with several locking holes, and one end of the plastic lock cylinder is provided with several latches.

[0008] Furthermore, the plastic lock cylinder and the lock cylinder assembly are located on both sides of the bottom shell, and one end of the plastic lock cylinder passes through the bottom shell and is engaged with the lock cylinder assembly by a buckle and a locking hole.

[0009] Furthermore, the lock cylinder assembly is also provided with a travel limit groove.

[0010] Furthermore, the bottom shell has a lock hole inside that fits into the plastic lock cylinder, and the lock hole has a travel limiting groove.

[0011] Furthermore, the surface of the plastic lock cylinder is provided with a travel limiting rod extending into the travel limiting groove on one side.

[0012] Furthermore, a travel limiting rod 2 is provided on one side of the bottom shell, with one end extending into the travel limiting groove 1.

[0013] Furthermore, the top of the card holder is provided with a guide slope that matches the bottom end of the hook.

[0014] Furthermore, a key is installed inside the plastic lock cylinder.

[0015] Compared with the prior art, the present invention provides a switch lock with the following advantages:

[0016] This switch lock replaces the metal lock cylinder with a plastic lock cylinder, combining a snap-fit ​​mechanism with a locking cylinder assembly. This eliminates bolt fixing and multi-stage transmission structures, significantly reducing the number of parts and material costs. Furthermore, the one-piece plastic molding process simplifies manufacturing. The guide slope on the top of the locking seat works in conjunction with the reset spring, allowing the hook to automatically spring back and lock when the housing is closed, reducing manual intervention. The travel limit groove and travel limit rod precisely limit the lock cylinder's rotation angle, preventing excessive bending and breakage of the reset spring. The structure is simple, compact, and economical, with broad application prospects. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a side view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the limiting plate structure of this utility model;

[0020] Figure 4 This is an exploded view of the plastic lock core structure of this utility model.

[0021] In the diagram: 1. Plastic lock cylinder; 11. Lock cylinder assembly; 12. Hook; 13. Reset spring; 14. Lock hole; 15. Snap-on; 16. Travel limit rod one; 17. Travel limit groove one; 18. Key; 2. Lock seat; 3. Bottom shell; 31. Lock hole; 32. Limiting plate; 33. Travel limit groove two; 34. Travel limit rod two; 4. Front shell. Detailed Implementation

[0022] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4This utility model discloses a switch lock, including a plastic lock cylinder 1 and a card seat 2. The plastic lock cylinder 1 is detachably installed on the bottom shell 3. The card seat 2 is integrally formed on the front shell 4 that matches the bottom shell 3. One end of the plastic lock cylinder 1 is provided with a lock cylinder assembly 11. The lock cylinder assembly 11 is provided with a hook 12 and a reset spring 13 located on one side of the hook 12.

[0024] Replacing the metal lock cylinder with a plastic lock cylinder 1, and combining the snap-fit ​​15, snap-fit ​​hole 14, and lock cylinder assembly 11 with a direct-insertion snap-fit, eliminates bolt fixing and multi-stage transmission structure, greatly reducing the number of parts and material costs. The plastic lock cylinder 1 adopts a one-piece plastic molding process, simplifying the processing flow. The top guide slope of the card seat 2 is linked with the reset spring 13, so that the hook 12 automatically avoids and rebounds to lock when the face shell 4 is closed, reducing manual intervention. The stroke limit groove and stroke limit rod work together to precisely limit the rotation angle of the lock cylinder, avoiding excessive bending and breakage of the reset spring 13. The structure is simple and compact, economical, and has broad application prospects.

[0025] Specifically, a limiting plate 32 is provided on one side of the bottom shell 3, which abuts against one end of the reset spring 13; a number of locking holes 14 are provided on the lock cylinder assembly 11; and a number of latches 15 are provided at one end of the plastic lock cylinder 1.

[0026] In this embodiment, the reset spring 13 is arc-shaped and the thickness of the end of the reset spring 13 away from the lock cylinder assembly 11 decreases. This design makes the end of the reset spring 13 easier to bend. When the key 18 turns the plastic lock cylinder 1, the plastic lock cylinder 1 drives the lock cylinder assembly 11 to rotate through the buckle 15 and the locking hole 14. The lock cylinder assembly 11 drives the hook 12 to rotate and disengage from the locking seat 2 to unlock. After the plastic lock cylinder 1 is installed with the bottom shell 3, one end of the plastic lock cylinder 1 is parallel to one side of the front shell 4, which is aesthetically pleasing. The plastic lock cylinder 1 also has an unlocking direction mark on one end, making it more convenient to use.

[0027] Specifically, the plastic lock cylinder 1 and the lock cylinder assembly 11 are located on both sides of the bottom shell 3. One end of the plastic lock cylinder 1 passes through the bottom shell 3 and is then engaged with the lock cylinder assembly 11 by a buckle 15 and a locking hole 14.

[0028] In this embodiment, when installing the plastic lock cylinder 1, the plastic lock cylinder 1 and the lock cylinder assembly 11 are placed on both sides of the bottom shell 3 and opposite to the lock hole 31. The plastic lock cylinder 1 is driven to pass one end of the buckle 15 through the lock hole 31 and engage with the locking hole 14 inside the lock cylinder assembly 11. After the plastic lock cylinder 1 and the lock cylinder assembly 11 are connected, the connection between the plastic lock cylinder 1, the lock cylinder assembly 11 and the bottom shell 3 is completed simultaneously, so that the plastic lock cylinder 1 will not shake back and forth.

[0029] Specifically, the lock cylinder assembly 11 is also provided with a travel limiting groove 17, and a travel limiting rod 34 extending into the travel limiting groove 17 is provided on one side of the bottom shell 3. The bottom shell 3 is provided with a lock hole 31 that fits into the plastic lock cylinder 1. The lock hole 31 is provided with a travel limiting groove 33, and the surface of the plastic lock cylinder 1 is provided with a travel limiting rod 16 extending into the travel limiting groove 33.

[0030] In this implementation scheme, the cooperation of travel limit groove 17, travel limit groove 33, travel limit rod 34, and travel limit rod 16 restricts the rotation angle of the plastic lock cylinder 1, preventing the plastic lock cylinder 1 from rotating excessively and preventing the reset spring 13 from bending excessively and breaking, thus ensuring the service life of the reset spring 13.

[0031] Specifically, the top of the card holder 2 is provided with a guide slope that matches the bottom of the hook 12, and the inside of the plastic lock cylinder 1 is provided with a key 18.

[0032] In this embodiment, the guide slope is designed so that when the front shell 4 and the bottom shell 3 are closed, the front shell 4 drives the guide slope on the card holder 2 to automatically abut against the hook 12, so that the hook 12 automatically flips and locks, making the operation simpler.

[0033] In use, the face shell 4 and the bottom shell 3 are connected by a hinged flip-to-close or sliding-to-close mechanism. The plastic lock cylinder 1 can be rotated by inserting the key 18, which is compatible with the plastic lock cylinder 1. The plastic lock cylinder 1 drives the lock cylinder assembly 11 to rotate. When the lock cylinder assembly 11 rotates, it causes the reset spring 13 to contact the limiting plate 32 and bend. Simultaneously, the lock cylinder assembly 11 drives the hook 12 to rotate and disengage from the card seat 2, thus unlocking the lock. The face shell 4 can then be flipped or pulled out. After releasing the key 18, the hook 12 resets due to the return spring 13. When the face shell 4 is closed, the card seat 2 on the face shell 4 contacts one end of the hook 12 via a guide slope, causing the hook 12 to automatically rotate and avoid contact with the lock cylinder assembly 11 and the plastic lock cylinder 1. When the lock cylinder assembly 11 avoids contact, it compresses the reset spring 13, and when the reset spring 13 returns to its original position, it causes the hook 12 to automatically engage with the inside of the card seat 2, thus locking the lock.

[0034] In summary, this switch lock replaces the metal lock cylinder with a plastic lock cylinder 1. Combined with the direct-insertion connection of the buckle 15, the locking hole 14, and the lock cylinder assembly 11, it eliminates bolt fixing and multi-stage transmission structures, significantly reducing the number of parts and material costs. Furthermore, the one-piece plastic molding process simplifies the manufacturing process. The top guide slope of the locking seat 2 is linked with the reset spring 13, enabling the hook 12 to automatically avoid and spring back to lock when the faceplate 4 is closed, reducing manual intervention. The travel limit groove and travel limit rod work together to precisely limit the rotation angle of the lock cylinder, preventing excessive bending and breakage of the reset spring 13. The structure is simple and compact, economical, and has broad application prospects.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A switch lock characterised by: The device includes a plastic lock cylinder (1) and a card holder (2). The plastic lock cylinder (1) is detachably installed on the bottom shell (3). The card holder (2) is integrally formed on the face shell (4) that matches the bottom shell (3). One end of the plastic lock cylinder (1) is provided with a lock cylinder assembly (11). The lock cylinder assembly (11) is provided with a hook (12) and a reset spring (13) located on one side of the hook (12).

2. A switch lock according to claim 1, wherein: A limiting plate (32) is provided on one side of the bottom shell (3) to abut against one end of the reset spring (13).

3. A switch lock according to claim 1, wherein: The lock cylinder assembly (11) is provided with a number of locking holes (14), and one end of the plastic lock cylinder (1) is provided with a number of buckles (15).

4. The switch lock of claim 1, wherein: The plastic lock cylinder (1) and the lock cylinder assembly (11) are located on both sides of the bottom shell (3). One end of the plastic lock cylinder (1) passes through the bottom shell (3) and is then engaged with the lock cylinder assembly (11) by a buckle (15) and a card hole (14).

5. The switch lock of claim 1, wherein: The lock cylinder assembly (11) is also provided with a travel limit groove (17).

6. A switch lock according to claim 1 wherein: The bottom shell (3) has a lock hole (31) inside that is fitted with the plastic lock cylinder (1), and the lock hole (31) has a travel limit groove (33) inside.

7. The switch lock of claim 1, wherein: The surface of the plastic lock cylinder (1) is provided with a travel limiting rod (16) extending into the travel limiting groove (33) on one side.

8. The switch lock of claim 1, wherein: One side of the bottom shell (3) is provided with a travel limiting rod (34) that extends into the travel limiting groove (17).

9. The switch lock of claim 1, wherein: The top of the card holder (2) is provided with a guide slope that matches the bottom of the hook (12).

10. The switch lock of claim 1, wherein: The plastic lock cylinder (1) has a key (18) inside.

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