Mechanical lock
By optimizing the connection structure and material selection between the lock core and the lock body, the stability and anti-theft problems of the mechanical lock are solved, and the high anti-theft, stability and durability of the lock are achieved. It is suitable for anti-theft doors and safes.
Patent Information
- Application Number
- CN202422473141.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-10-14
AI Technical Summary
The existing mechanical locks have poor stability, difficulty in unlocking, troublesome maintenance, insufficient anti-theft performance, and are prone to loosening and damage in harsh environments.
By optimizing the connection structure between the lock core and the lock body, small hexagonal flat and fine tooth nuts, corrugated washer, thin nuts, internal lock washer, etc., the stable connection between the lock core and the lock body is enhanced, and anti-corrosion materials are provided on the surface of the lock body, combining the design of springs and marbles to ensure the anti-destructive ability of the lock core.
It improves the anti-theft performance and stability of the lock, simplifies the installation and maintenance process, enhances the durability and environmental protection of the lock, and is suitable for high safety and high frequency use places.
Smart Images
Figure CN223190218U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of mechanical locks, and in particular relates to a mechanical lock. Background Art
[0002] A mechanical lock is a traditional lock that relies primarily on mechanical principles to achieve locking and unlocking functions. A mechanical lock typically consists of a lock body and at least one movable bolt (or lock pin), interconnected by a complex mechanical structure. When the correct key is inserted into the lock cylinder and turned, the mechanical components within the lock move in a specific sequence, causing the bolt (or lock pin) to retract or eject, thus locking or unlocking the door.
[0003] Through the above analysis, the problems and defects of the existing technology are as follows:
[0004] Existing mechanical locks have poor stability, are laborious to unlock, and are troublesome to maintain. Summary of the Invention
[0005] In view of the problems existing in the prior art, the utility model provides a mechanical lock.
[0006] The utility model is implemented in this way: a mechanical lock includes:
[0007] Mechanical key, lock cover, wave washer, small hexagonal nut with extra flat fine thread, lock body, open retaining ring, limit plate, internal tooth lock washer, thin nut, lock core, internal cross recessed countersunk screw, spring, marble;
[0008] A lock core is provided inside the lock body; a lock cover is provided on the upper part of the lock body; a small hexagonal extra flat fine-thread nut is provided outside the lock body; a corrugated washer is provided between the small hexagonal extra flat fine-thread nut and the lock cover; an open retaining ring is provided below the lock core; a limit plate is provided below the open retaining ring; an internal tooth locking washer is provided below the limit plate; further, the lock cover is fixed by an internal cross slot countersunk screw.
[0009] Furthermore, a spring and a marble are arranged in the lock core wall.
[0010] Furthermore, a thin nut is provided at the lower end of the lock core.
[0011] In combination with the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solutions to be protected by the present utility model are as follows:
[0012] First, the mechanical lock provided by this utility model includes: a mechanical key, a lock cover, a wave washer, a small hexagonal nut with extra flat fine threads, a lock body, a split retaining ring, a stopper, an internally toothed lock washer, a thin nut, a lock core, a countersunk screw with an internal cross recess, a spring, and a ball. Due to its simple structure and high stability, the mechanical lock is not prone to malfunction. Even if a malfunction occurs, repair is relatively simple and convenient.
[0013] Second, the mechanical lock technology solution of this utility model solves the following problems existing in the prior art in industrial applications and achieves significant technological progress:
[0014] 1. Improve the anti-theft performance of the lock
[0015] Existing mechanical locks often cause safety hazards during long-term use due to poor ball design or the lock core being easily damaged by external forces. The utility model greatly enhances the anti-destruction ability of the lock core (10) by rationally designing the position and working principle of the spring (12) and the ball (13), ensuring that only a specific mechanical key (1) can be opened smoothly. The opening retaining ring (6) cooperates with the lock core (10) to make the lock core more stable inside the lock body (2), effectively avoiding the possibility of external force prying and damaging the lock. Therefore, the utility model achieves a significant improvement in anti-theft performance and is particularly suitable for places requiring high security, such as driver controllers in subways and high-speed railways.
[0016] 2. Improved the stability and durability of the lock
[0017] In the prior art, due to long-term use or external environmental influences, the lock assembly is prone to loosening, resulting in poor rotation of the lock core and shortened lock service life. The utility model ensures a firm connection between the lock body and the lock core through the design of a small hexagonal extra-flat fine-tooth nut (4), a wave washer (3), a thin nut (9), and an internal-tooth locking washer (8), thereby preventing the lock core from loosening and becoming unstable. In addition, the wave washer has a certain degree of elasticity and can resist the influence of environmental vibration, effectively extending the service life of the lock, and is particularly suitable for high-frequency use scenarios.
[0018] 3. Simplified installation and maintenance process
[0019] In the prior art, the installation and maintenance of locks are complicated and often require specialized tools and technicians. The utility model makes the installation of the lock cover (2) more convenient and reliable through the design of the internal cross recessed countersunk screw (11), and can be maintained and disassembled without the need for special tools. This design greatly simplifies the daily maintenance process of the lock, reduces the user's cost, and improves the convenience of operation.
[0020] 4. Enhanced environmental resistance and damage resistance of the lock
[0021] The design of this utility model fully considers the use requirements of the lock in various harsh environments. By providing anti-corrosion treatment materials on the surface of the lock body and using key components such as the limit plate (7) and the lock core (10) made of highly wear-resistant materials, the durability and wear resistance of the entire lock are improved. During long-term use, it is not easy to be damaged due to environmental changes or frequent operation, ensuring the long-term stable operation of the lock in various application scenarios such as industrial and residential.
[0022] By improving anti-theft performance, enhancing stability, simplifying maintenance and enhancing environmental resistance, the utility model has achieved significant technological progress in the field of mechanical locks, solved many technical problems existing in existing locks, and provided users with safer, more durable and convenient lock products. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 This is a diagram of the mechanical lock structure provided by the embodiment of the utility model
[0024] Figure 2 This is a structural diagram of a mechanical key provided by an embodiment of the present utility model.
[0025] Figure 3 This is a dimensional diagram of the mechanical lock provided by an embodiment of the utility model; a is a top view; b is a horizontal side view; c is a vertical side view; d is a stereoscopic view.
[0026] Figure 4 It is a partial cross-sectional view of a mechanical lock provided by an embodiment of the present utility model.
[0027] Figure 5 This is a structural diagram of a lock body provided by an embodiment of the present utility model.
[0028] Figure 6 This is a structural diagram of a lock core provided by an embodiment of the present utility model.
[0029] Figure 7 This is a structural diagram of the lock cover provided by an embodiment of the utility model; A is a top view, and B is a side view.
[0030] Figure 8 This is a structural diagram of the limiting piece provided by an embodiment of the utility model; A is a top view, and B is a side view.
[0031] In the figure: 1. Mechanical key; 2. Lock cover; 3. Corrugated washer; 4. Small hexagonal nut with extra flat fine thread; 5. Lock body; 6. Open retaining ring; 7. Limit plate; 8. Internal tooth locking washer; 9. Thin nut; 10. Lock core; 11. Internal cross recessed countersunk screw; 12. Spring; 13. Marble. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0033] like Figure 1-8 As shown, a mechanical lock provided by an embodiment of the present invention includes:
[0034] Mechanical key 1, lock cover 2, wave washer 3, small hexagonal extra flat fine thread nut 4, lock body 5, open retaining ring 6, limit plate 7, internal tooth locking washer 8, thin nut 9, lock core 10, internal cross recessed countersunk screw 11, spring 12, marble 13.
[0035] A lock core 10 is provided inside the lock body 5; a lock cover 2 is provided on the upper end surface of the lock body 5; a small hexagonal extra flat fine-thread nut 4 is provided on the surface of the lock body 5; a wave washer 3 is provided between the small hexagonal extra flat fine-thread nut 4 and the lock cover; an open retaining ring 6 is provided below the lock core 10; a limit plate 7 is provided below the open retaining ring 6; and an internal tooth locking washer 8 is provided below the limit plate 7;
[0036] The locking cover 2 provided in the embodiment of the present invention is fixed by means of an inner cross recessed countersunk screw 11 .
[0037] A spring 12 and a marble 13 are provided in the wall of the lock body 2 provided in the embodiment of the present invention.
[0038] The operating principle of the mechanical lock provided by this embodiment of the utility model is based on the coordinated operation of various internal components to ensure smooth rotation, locking, and unlocking of the lock cylinder. First, when the mechanical key 1 is inserted into the lock cylinder 10, the spring 12 and marble 13 within the lock cylinder begin to operate. The marble 13 moves according to the specific tooth shape of the key, accurately pushing the marble into the gap between the lock cylinder and the lock body 5, thereby releasing the lock cylinder. At this point, rotation of the key drives the lock cylinder to rotate, thereby achieving the purpose of unlocking or locking.
[0039] The lock core 10 is enclosed above by a lock cover 2, which is connected to the lock body 5 via a small hexagonal, extra-flat, fine-thread nut 4. A wave washer 3 is positioned between the lock cover and the nut to increase the nut's stability and prevent the lock cover from loosening during long-term use. The elasticity of the wave washer 3 absorbs minor displacements of the lock cover during operation, thereby maintaining a tight fit between the lock core and the lock body and ensuring the overall stability of the lock body.
[0040] Below the lock cylinder 10, a retaining ring 6 is installed to limit the vertical movement of the lock cylinder. The retaining ring's primary function is to prevent the lock cylinder from disengaging from the lock body during unlocking or locking, while also providing a suitable limit for internal rotation. Below the retaining ring, a limiting plate 7 further secures the lock cylinder during rotation, ensuring that the lock cylinder does not move excessively during unlocking or locking operations.
[0041] An internally toothed locking washer 8 is located beneath the lock core 10. Secured by a thin nut 9, it prevents loosening and ensures a tight fit between the lock core and the lock body during long-term use. Furthermore, the presence of an internally Phillips countersunk screw 11 further enhances the mechanical lock's structural stability, ensuring the lock body maintains efficient operation in a variety of complex environments. This combined design ensures that the lock not only offers high resistance to prying and loosening in daily use, but also maintains precise functionality and reliability over extended periods of use.
[0042] Technical requirements:
[0043] The components are installed firmly and reliably without any looseness.
[0044] After installation, key 1 can be inserted and rotated flexibly without any sticking or blocking during rotation.
[0045] Apply Loctite 2701 thread tightening glue to the cross recessed countersunk head screw 11 when installing it.
[0046] When installing the lock cylinder 10, apply EM-60L grease to the areas where it rubs against other parts.
[0047] The mechanical lock in this embodiment of the utility model achieves both high-strength security and convenient operation through a clever internal structural design. First, a lock core 10 is disposed within the lock body 5. This lock core 10 engages with the interior of the lock core 3 via a protrusion on the mechanical key 1. Clockwise rotation of the key 1 drives the lock core 10, causing a spring 12 and a ball 13 disposed within the lock core wall to spring to the unlocked position, thereby achieving the unlocking function. Conversely, when the key 1 is removed, the reaction force of the spring 12 pushes the ball 15 back to its initial position, achieving locking.
[0048] In the external structure of the lock core 10, the split retaining ring 6 is clamped in the slot at the lower end of the lock core, ensuring that the lock core 10 is stably fixed in the lock body 5. The small hexagonal nut 4 with extra flat fine pitch is located on the surface of the lock body 5 and is further strengthened by the wave washer 3 structure to tighten and prevent loosening of the small hexagonal nut 4.
[0049] The lock cover 3 is firmly fixed to the lock body 5 by means of an inner cross recessed countersunk screw 11 .
[0050] The opening retaining ring 6 is used to limit the longitudinal displacement of the lock core 10 to prevent the lock core 10 from falling out, and the limiting plate 7 is installed at the bottom of the lock core 10. The limiting plate cooperates with the protruding part of the lock body to limit the rotation of the lock core 10 within the specified range to avoid excessive rotation and damage to the lock body 5.
[0051] Example 1: Anti-theft door lock application
[0052] The embodiments of the present utility model are applied to mechanical locks for security doors. In this security door lock, the lock body 5 is made of steel, and the surface is treated with an anti-corrosion treatment to increase service life and durability. The lock cylinder 10 of this lock ensures high security through the design of the spring 12 and the marble 13. When the mechanical key 1 is inserted and rotated, the marble 13 is pushed, and the spring 12 is compressed, which releases the lock cylinder 10 and allows the user to open the security door smoothly. The elastic design of the corrugated washer 3 prevents the lock cover 2 from loosening, extending the service life of the lock. This design is particularly suitable for residential and commercial spaces, enhancing the security and reliability of security doors.
[0053] Example 2: Safe Mechanical Lock Application
[0054] In this embodiment, the mechanical lock is used for a safe lock. The lock body 5 of the safe is made of thick stainless steel material and is equipped with a multiple security protection design. The marbles 13 and springs 12 of the mechanical lock form a complex locking system, ensuring that only a specific mechanical key 1 can unlock it, thereby increasing the ability to prevent prying and theft. In the safe, due to the low frequency of use, the use of the small hexagonal extra-flat fine-thread nut 4 and the wave washer 3 can maintain the long-term stability of the lock body 5 and avoid loosening problems caused by the environment or vibration. The lock cover 2 is firmly fixed by the internal cross-slot countersunk screw 11 to prevent the lock from being interfered with by the outside. In addition, the design of the opening retaining ring 6 and the limit plate 7 at the bottom of the lock body effectively protects the rotation range of the lock core, avoids damage to the lock core due to misoperation, and makes the device suitable for use in safes and other occasions that require a high degree of protection.
[0055] The above is only a specific implementation method of the present invention, but the scope of protection of the present invention is not limited to this. Any modifications, equivalent substitutions and improvements made by any technician familiar with this technical field within the technical scope disclosed by the present invention and within the spirit and principles of the present invention should be covered by the scope of protection of the present invention.
Claims
1. A mechanical lock comprising a mechanical key (1), a lock body (2), a lock core (3), a lock cover (4), a stopper (5), an internal cross recessed countersunk screw (8), a thin nut (9), a small hexagonal nut with extra flat fine threads (10), an internal tooth locking washer (11), a wave washer (12), an open retaining ring (13), a spring (14), a marble (15) and a cylindrical pin (16), characterized in that: A lock core (3) is provided inside the lock body (2), and the lock core (3) is locked and unlocked by controlling the spring (14) and the marble (15) through the mechanical key (1); a small hexagonal, extra-flat, fine-thread nut (10) is provided outside the lock body (2), and a cylindrical pin (16) is fixed by a thin nut (9).
2. The mechanical lock according to claim 1, wherein: The wave washer (12) is located above the small hexagonal extra flat fine-thread nut (10), and the wave washer (12) generates a pressing force between the lock cover (4) and the small hexagonal extra flat fine-thread nut (10) through its elastic structure.
3. The mechanical lock according to claim 1, wherein: The lock cover (4) is fixed to the lock body (2) via an inner cross recessed countersunk screw (8), and an additional pressing force is provided between the lock cover (4) and the lock body (2) via a corrugated washer (12).
4. The mechanical lock according to claim 1, wherein: An opening retaining ring (13) is provided below the lock core (3), and the opening retaining ring (13) is used to limit the longitudinal displacement of the lock core (3).
5. The mechanical lock according to claim 1, wherein: The limiting piece (5) is arranged below the opening retaining ring (13) and is used to control the rotation range of the lock core (3).
6. The mechanical lock according to claim 1, wherein: The inner tooth locking washer (11) is arranged below the limiting plate (5) and is fixed by a matching thin nut (9).