Quick lock cylinder replacing device of mechanical lock

Abstract

The utility model discloses a quick lock cylinder replacing device of a mechanical lock, which comprises an outer shell, a lock body and an inner shell, the outer shell and the inner shell are respectively distributed on the two sides of the lock body, the lock body is provided with a mounting hole in a penetrating manner, a lock cylinder is arranged in the mounting hole, one side of the lock body is rotatably provided with an insert, and the insert is provided with a through hole. The lock cylinder is movably inserted into the mounting hole and can move axially along the mounting hole, a clamping groove capable of being matched with the insert in an embedded mode is formed in one side of the lock cylinder in a concave mode, a limiting pin is arranged on the inner side of the inner shell, and the limiting pin abuts against one side of the insert so that the insert can be kept in the connecting state of being embedded into the clamping groove. The lock cylinder is fixedly arranged relative to the lock body. By axially inserting and pulling in the mounting hole of the lock body and matching with the embedding of the insert on the lock body and the clamping groove of the lock cylinder, a user only needs to pick up the insert and push and pull the lock cylinder to complete replacement, and tools are not needed.

Description

Technical Field

[0001] This utility model specifically relates to a quick-change lock cylinder device for mechanical locks. Background Technology

[0002] A mechanical lock is a security device, invented by humans to protect their property; it is a key-operated opening mechanism. Mechanical locks serve multiple purposes, including preventing items from being opened or moved, providing protection, management, and even decoration.

[0003] Existing mechanical locks generally consist of an outer shell, a lock body, and an inner shell. The lock body is unlocked by opening the lock cylinder on the lock body with a key. For example, an electronic door lock disclosed in Chinese Patent Publication No. CN108286369A includes an inner shell located inside the door panel. The inner shell contains a clutch seat and a motor assembly located at the lower end of the clutch seat. The clutch seat contains a clutch core, and the lower end of the clutch seat contains a clutch pin. The clutch core has a clutch groove.

[0004] The lock cylinder is built into the lock body. In actual use, when the lock cylinder needs to be replaced, the entire lock body must be removed from the door. This method makes the installation and replacement of the lock cylinder cumbersome and inconvenient. Utility Model Content

[0005] In view of the defects of the existing technology, the technical problem to be solved by this utility model is to provide a quick lock cylinder replacement device for mechanical locks.

[0006] A quick-change lock cylinder device for a mechanical lock includes an outer shell, a lock body, and an inner shell. The outer shell and the inner shell are respectively distributed on both sides of the lock body. The lock body has a through-hole for mounting, and a lock cylinder is disposed in the mounting hole. A insert is rotatably disposed on one side of the lock body. The lock cylinder is movably inserted into the mounting hole and can be displaced axially along the mounting hole. A groove is recessed on one side of the lock cylinder to engage with the insert. A limiting pin is provided on the inner side of the inner shell. The limiting pin abuts against one side of the insert, so that the insert is kept in the connected state of being embedded in the groove. When the insert is embedded in the groove, the lock cylinder is fixed relative to the lock body.

[0007] In one embodiment, a torsion spring is provided at the rotatable connection between the insert and the lock body, so that the insert and the slot are kept in an engaged state under normal conditions.

[0008] In one embodiment, connecting posts are spaced apart on the inner side of the outer shell, and the ends of the connecting posts are recessed with threaded holes. A connecting screw that can engage with the threaded holes is inserted into one side of the inner shell.

[0009] In one embodiment, the limiting pin is detachably connected to the inner side of the inner shell via a threaded connection.

[0010] In one embodiment, the outer periphery of the limiting pin is a conical surface, which forms an angle of 15°-45° with the axis, and the conical surface presses against the insert.

[0011] In one embodiment, the inner wall of the mounting hole is provided with an axially extending guide groove, and the outer surface of the lock cylinder is provided with a rib that matches the guide groove, so as to achieve anti-rotation positioning when the lock cylinder is inserted.

[0012] In one embodiment, the slot is a stepped multi-level groove structure, the depth of the stepped grooves decreases step by step, the height difference between adjacent steps is 1-3mm, and the insert is provided with multi-level protrusions to form a multi-segment locking structure.

[0013] In summary, the advantages of this utility model over the prior art are:

[0014] The lock cylinder of this utility model is inserted axially into the mounting hole of the lock body. With the engagement of the insert on the lock body and the slot of the lock cylinder, the user only needs to lift the insert and push and pull the lock cylinder to complete the replacement without tools. When the outer shell and the inner shell are connected during installation, the limiting pin of the inner shell can press the insert, so that the insert is kept in the slot and forms a stable lock. Attached Figure Description

[0015] Figure 1 This is an assembly diagram of a quick-change lock cylinder device for a mechanical lock according to one embodiment of the present invention;

[0016] Figure 2 This is one of the exploded views of a quick-change lock cylinder device for a mechanical lock according to one embodiment of the present invention;

[0017] Figure 3 This is the second exploded view of a quick-change lock cylinder device for a mechanical lock according to one embodiment of the present invention. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0019] like Figures 1 to 3The present invention preferably provides a quick-change lock cylinder device for a mechanical lock, comprising an outer shell 1, a lock body 2, and an inner shell 3. The outer shell 1 and the inner shell 3 are respectively distributed on both sides of the lock body 2. The lock body 2 has a through-hole 4, and a lock cylinder 5 is disposed in the through-hole 4. The lock body 2 is characterized in that: a block 6 is rotatably disposed on one side of the lock body 2, and the lock cylinder 5 is movably inserted into the through-hole 4 and can be displaced axially along the through-hole 4. A groove 7 is recessed on one side of the lock cylinder 5 to engage with the block 6. A limiting pin 8 is provided on the inner side of the inner shell 3, and the limiting pin 8 abuts against one side of the block 6 so that the block 6 is kept in the connected state of being embedded in the groove 7. When the block 6 is embedded in the groove 7, the lock cylinder 5 is fixed relative to the lock body 2.

[0020] Specifically, the lock cylinder is inserted axially into the mounting hole of the lock body. With the engagement of the insert on the lock body and the slot of the lock cylinder, the user only needs to lift the insert and push and pull the lock cylinder to complete the replacement without tools. When the outer shell and inner shell are connected during installation, the limiting pin of the inner shell can press the insert, so that the insert is kept in the slot and forms a stable lock.

[0021] Furthermore, a torsion spring is provided at the rotatable connection between the insert 6 and the lock body 2. The torsion spring maintains the insert in the engaged state with the slot under normal conditions. In addition, the torsion spring automatically resets the insert, avoiding loosening caused by human error.

[0022] Furthermore, the inner side of the outer shell 1 is provided with connecting posts 9 at intervals, the end of the connecting post 9 is recessed with a screw hole, and a connecting screw 11 that can be threaded into the screw hole is inserted into one side of the inner shell 3.

[0023] Furthermore, the limiting pin 8 is detachably connected to the inner side of the inner shell 3 via a threaded connection.

[0024] Furthermore, the outer periphery of the limiting pin 8 is a conical surface, which forms an angle of 15°-45° with the axis, and its conical surface presses against the insert 6. The conical surface design of the limiting pin provides self-locking pressure, ensuring that the insert and the slot fit tightly and preventing accidental dislodgement.

[0025] Furthermore, the inner wall of the mounting hole 4 is provided with an axially extending guide groove, and the outer surface of the lock cylinder 5 is provided with a rib that matches the guide groove, so as to achieve anti-rotation positioning when the lock cylinder is inserted.

[0026] Furthermore, the slot 7 has a stepped multi-level groove structure, with the depth of the stepped grooves decreasing progressively and the height difference between adjacent steps being 1-3mm. The insert 6 is correspondingly provided with multiple levels of protrusions, forming a multi-segment locking structure. The multiple protrusions of the insert must then disengage step by step, enhancing its anti-pry performance.

[0027] The operation steps are as follows: Replace the lock cylinder: Loosen the connecting screw 11 to remove the inner shell 3, manually move the insert 6 out of the slot 7, and pull out the old lock cylinder axially; Install the new lock cylinder: Align the rib of the new lock cylinder 5 with the guide groove in the mounting hole 4 and insert it until the insert 6 springs into the slot 7 under the action of the torsion spring; Fix the structure: Reinstall the inner shell 3, and press the insert 6 with the conical surface of the limit pin 8 to form a stable lock.

[0028] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A quick replacement cylinder device of a mechanical lock, comprising a shell (1), a lock body (2) and an inner shell (3), the shell (1) and the inner shell (3) are respectively distributed on both sides of the lock body (2), the lock body (2) is provided with a mounting hole (4) penetratingly, and a cylinder (5) is arranged in the mounting hole (4), characterized in that: The lock body (2) is rotatably provided with an insert block (6), the lock cylinder (5) is movably inserted into the mounting hole (4) and can be axially displaced along the mounting hole (4), a clamping groove (7) capable of being inlaid with the insert block (6) is recessed on one side of the lock cylinder (5), the inner side of the inner shell (3) is provided with a limiting pin (8), the limiting pin (8) abuts against one side of the insert block (6) to cause the insert block (6) to remain in a connected state of being inlaid in the clamping groove (7), when the insert block (6) is inlaid in the clamping groove (7), the lock cylinder (5) is fixedly arranged relative to the lock body (2). ​ 2. A quick change lock cylinder device for a mechanical lock according to claim 1, characterized in that: The rotating connection between the insert block (6) and the lock body (2) is provided with a torsion spring, which keeps the inlaid state of the insert block and the clamping groove in normal state.

3. A quick change lock cylinder device for a mechanical lock according to claim 1, characterized in that: The inner side of the outer shell (1) is provided with a connecting column (9) at intervals, the end of the connecting column (9) is recessed with a screw hole, and the side of the inner shell (3) is inserted with a connecting screw (11) capable of being threadedly matched with the screw hole.

4. A quick change lock cylinder device for a mechanical lock according to claim 1, characterized in that: The limiting pin (8) is detachably connected to the inner side of the inner shell (3) through thread cooperation.

5. A quick change lock cylinder device for a mechanical lock according to claim 1, characterized in that: The outer periphery of the limiting pin (8) is a tapered surface, the tapered surface forms an included angle of 15°-45° with the axis, and the tapered surface abuts against the insert block (6).

6. A quick change lock cylinder device for a mechanical lock according to claim 1, characterized in that: The inner wall of the mounting hole (4) is provided with an axially extending guide groove, and the outer surface of the lock cylinder (5) is provided with a protruding rib matched with the guide groove, so as to realize anti-rotation positioning when the lock cylinder is inserted.

7. A quick change lock cylinder device for a mechanical lock according to claim 1, characterized in that: The clamping groove (7) is a stepped multi-stage groove structure, the depth of the stepped groove gradually decreases, the height difference between adjacent steps is 1-3mm, the insert block (6) is correspondingly provided with multi-stage protrusions to form a multi-section locking structure.

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