Anti-theft tensioning lock and key
By introducing precision structures such as rotating cylinder, lock core rod, spiral hole, pin shaft, bullet-type limit head and sealing ring into the lock, combined with the precise matching design of the key, the problem of easy cracking of traditional locks is solved, and the anti-theft performance and convenience of use is achieved, and the service life of the lock is extended.
Patent Information
- Application Number
- CN202422474086.3
- 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
Traditional mechanical locks are easily cracked by technical means, and their anti-theft performance is weak, especially when facing professional thieves, their safety is insufficient.
An anti-theft-type tightening lock is designed, which adopts a precision mechanical structure composed of a rotating cylinder, a lock core rod, a spiral hole, a pin shaft, a bullet-type limiting head and a sealing ring. Combined with the precise matching of the rotating part of the key and the bumps of the lock core and the locking mechanism between the slot and the limiting head, the anti-theft-proof performance of the lock is enhanced, and the stability is improved through the threaded locking structure and the sealing ring.
It significantly improves the anti-theft performance of the lock, enhances the convenience of use, extends the product life, and ensures the stability and sealing of the lock.
Smart Images
Figure CN223190219U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tension lock tools, in particular to an anti-theft tension lock and a key. Background Art
[0002] With the increasing development of modern transportation, trains, subways, cars, airplanes, and other modes of transportation have become an integral part of people's daily lives. While these modes of transportation efficiently and conveniently connect cities and regions, they also face severe security challenges. The locking mechanism for carriage and aircraft doors is particularly important, as its safety is directly related to the safety of passengers' lives and property.
[0003] In recent years, traditional mechanical locks, such as key locks, have simple structures and are easily cracked by technical unlocking methods. Especially when facing professional thieves, their anti-theft performance is relatively weak. Utility Model Content
[0004] The technical problem to be solved by the utility model is to overcome the above technical defects and provide an anti-theft tension lock and a key.
[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: an anti-theft tension lock, including a lock shell, a lock core and a lock tongue, the interior of the lock shell is provided with an installation cavity, the lock core is installed in the installation cavity, the lock core includes a rotating cylinder rotatably arranged in the installation cavity of the lock shell, the upper end of the rotating cylinder is provided with a lock core protrusion, a lock core rod is movably installed inside the rotating cylinder, spiral holes are provided on both sides of the rotating cylinder and pin shafts located in the spiral holes are provided on both sides of the lock core rod, the inner end of the lock core rod passes through the rotating cylinder and the lock shell in sequence and the lock tongue is installed on the inner end of the lock core rod.
[0006] Furthermore, a key slot is provided on the upper part of the rotating cylinder and the lock core protrusion is arranged in the key slot, T-shaped mounting holes connected to the key slot are provided on both sides of the upper part of the rotating cylinder, a bullet-shaped limit head is provided in the T-shaped mounting hole, and limiting holes are provided on both sides of the upper end of the lock shell mounting cavity, and a push block is connected to the limiting hole through a spring, one end of the bullet-shaped limit head contacts the push block and the other end of the bullet-shaped limit head passes through the T-shaped mounting hole and extends into the key slot.
[0007] Furthermore, a sealing groove is provided on the outer side surface of the rotating cylinder and a sealing ring is installed in the sealing groove.
[0008] Furthermore, an external thread is provided on the outer surface of the lock housing and a locking nut is threadedly sleeved on the external thread, and a fixing portion is formed between the locking nut and the head of the lock housing.
[0009] A key for an anti-theft tension lock comprises a key rod, the upper end of the key rod is provided with a hand-holding portion, the lower end of the key rod is provided with a rotating portion corresponding to the shape of a key slot, the lower end of the rotating portion is provided with a rotating recess corresponding to the shape of a lock core protrusion, and both sides of the rotating portion are also provided with card slots corresponding to the position of a bullet-shaped limit head, and the bullet-shaped limit head can be pushed into the card slot by a pushing block.
[0010] The advantages of the present invention over the prior art are that the anti-theft tension lock and its key proposed in this application have shown significant technical advantages over the prior art. Its core lies in the combination of a unique anti-theft design and a sophisticated mechanical structure, which not only enhances the overall security of the lock, but also improves the user experience. Through the precise matching of the rotating part and the lock core protrusion, as well as the ingenious locking mechanism of the card slot and the bullet-shaped limit head, the present application effectively prevents illegal copying and opening, and significantly improves the anti-theft performance of the lock. In addition, the threaded locking structure of the lock shell and the application of the sealing ring further enhance the stability and sealing of the lock, and extend the service life. In summary, the present application has performed well in improving the anti-theft effect, enhancing the convenience of use and extending the life of the product, and has more superior comprehensive performance compared to the prior art. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a structural diagram of an anti-theft tension lock and key of the present application.
[0012] Figure 2 This is a schematic diagram of the disassembled structure of an anti-theft tension lock and key of the present application.
[0013] Figure 3 This is a schematic diagram of the internal cross-sectional structure of an anti-theft tension lock and key of the present application.
[0014] As shown in the figure: 1. Lock case, 2. Lock core, 3. Lock tongue, 4. Rotating cylinder, 5. Lock core protrusion, 6. Lock core rod, 7. Spiral hole, 8. Pin shaft, 9. Key slot, 10. T-shaped mounting hole, 11. Bullet-shaped limit head, 12. Limit hole, 13. Spring, 14. Push block, 15. Sealing ring, 16. Lock nut, 17. Key rod, 18. Handle part, 19. Rotating part, 20. Rotating notch, 21. Slot. DETAILED DESCRIPTION
[0015] The present invention will be described in further detail below with reference to the accompanying drawings.
[0016] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings, wherein the same components are represented by the same reference numerals.
[0017] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the accompanying drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.
[0018] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.
[0019] Combined with attachment Figure 1 -Attached Figure 3 , an anti-theft tension lock, comprising a lock shell 1, a lock core 2 and a lock tongue 3. The lock shell 1 is provided with a mounting cavity, and the lock core 2 is installed in the mounting cavity. The lock core 2 includes a rotating cylinder 4 rotatably arranged in the mounting cavity of the lock shell 1, and a lock core protrusion 5 is provided at the upper end of the rotating cylinder 4. A lock core rod 6 is movably installed inside the rotating cylinder 4. Spiral holes 7 are provided on both sides of the rotating cylinder 4 and pins 8 located in the spiral holes 7 are provided on both sides of the lock core rod 6. The inner end of the lock core rod 6 passes through the rotating cylinder 4 and the lock shell 1 in sequence, and the lock tongue 3 is installed at the inner end of the lock core rod 6.
[0020] In one embodiment, a key slot 9 is provided on the top of the rotating cylinder 4, and a lock cylinder protrusion 5 is positioned within the key slot 9. T-shaped mounting holes 10 are provided on both sides of the upper portion of the rotating cylinder 4, communicating with the key slot 9. A bullet-shaped stopper 11 is positioned within each of the T-shaped mounting holes 10. The upper end of the mounting cavity of the lock housing 1 is provided with stopper holes 12 on both sides. A push block 14 is connected to each of the stopper holes 12 via a spring 13. One end of the bullet-shaped stopper 11 contacts the push block 14, while the other end of the bullet-shaped stopper 11 passes through the T-shaped mounting hole 10 and extends into the key slot 9. In this embodiment, the design of the rotating cylinder 4 not only incorporates the basic lock cylinder protrusion 5 for mating with the key's rotation notch 20, but also cleverly incorporates the combination of the bullet-shaped stopper 11 and the T-shaped mounting hole 10. This design significantly enhances the lock's anti-theft performance. When the correct key is inserted, the precise alignment of its retaining groove 21 with the bullet-shaped stopper 11 allows the key to continue rotating after pushing the bullet-shaped stopper 11, thereby actuating the lock cylinder. Any non-matching key, due to the lack of the corresponding slot 21, can only push the bullet-shaped stopper 11 completely into the stopper hole 12, making the lock cylinder unable to rotate, thereby effectively preventing illegal unlocking. In addition, the return action of the spring 13 ensures that the bullet-shaped stopper 11 can quickly return to its original position after the key is removed, ready for the next anti-theft verification.
[0021] In one embodiment, a sealing groove is provided on the outer side of the rotating cylinder 4, and a sealing ring 15 is installed in the sealing groove. The sealing ring 15 fits tightly in the gap between the rotating cylinder 4 and the lock housing 1, effectively blocking the intrusion of external impurities such as dust and moisture, and protecting the delicate mechanical structure inside the lock cylinder from corrosion and wear.
[0022] In one embodiment, the outer surface of the lock housing 1 is provided with an external thread and a locking nut 16 is provided on the threaded sleeve of the external thread, and a fixing portion is formed between the locking nut 16 and the head of the lock housing 1. This embodiment emphasizes the close fit between the external thread on the outer surface of the lock housing 1 and the locking nut 16. This threaded locking structure not only simplifies the installation process of the lock, but also greatly enhances the connection strength between the lock and the installation surface (such as a car or cabin door panel). By rotating the locking nut 16, the installation tightness of the lock can be accurately adjusted to ensure that the lock can remain stable and not loose in various usage environments. In addition, the fixing portion formed between the locking nut 16 and the head of the lock housing 1 also plays an additional anti-pry protection role, further improving the overall safety of the lock.
[0023] A key for an anti-theft tension lock includes a key rod 17. The upper end of the key rod 17 is provided with a grip portion 18. The lower end of the key rod 17 is provided with a rotating portion 19 having a corresponding shape. The lower end of the rotating portion 19 is provided with a rotating recess 20 having a corresponding shape to the lock core protrusion 5. Both sides of the rotating portion 19 are also provided with slots 21 corresponding to the position of the bullet-shaped stopper 11, and the bullet-shaped stopper 11 can be pushed into the slots 21 by a push block 14. The lower end of the key rod 17 is cleverly designed with a rotating portion 19 corresponding to the shape of the lock core. The precise size and shape of the rotating portion 19 ensure that it can be accurately inserted into the key slot 9 of the lock core and tightly fit with the lock core protrusion 5. This high-precision matching mechanism is the key to preventing illegal copying and opening.
[0024] Of particular note is the rotation notch 20 at the lower end of the rotating portion 19, which has been carefully designed and polished to ensure that it is identical in shape to the lock cylinder protrusion 5. This shape matching not only ensures that the key can smoothly rotate the lock cylinder but also greatly increases the difficulty of illegal copying, as any slight dimensional deviation will cause the key to malfunction.
[0025] In addition, slots 21 are provided on both sides of the rotating portion 19, corresponding to the positions of the bullet-shaped stopper 11. These slots 21 are an important component of the key's anti-theft function. When the key is fully inserted into the lock cylinder, the slots 21 will precisely align with the bullet-shaped stopper 11. At this point, if the key is legitimate, the bullet-shaped stopper 11 will return to the T-shaped mounting hole 10 under the elastic force of the spring 13 and tightly lock with the slots 21. This locking mechanism not only prevents the key from being accidentally removed during rotation, but also ensures that only legitimate keys can drive the lock cylinder to rotate.
[0026] Working Principle: The anti-theft tension lock is secured in place (such as a vehicle or aircraft door panel) by interlocking the external threads of the lock housing 1 with the threads of the lock nut 16. The fixed portion formed between the lock nut 16 and the head of the lock housing 1 ensures secure installation.
[0027] In the unlocked state, the lock tongue 3 remains in a vertical state, and the pin 8 on the lock core rod 6 is located at the innermost end of the spiral hole 7 inside the rotating cylinder 4. This state allows the door panel to be in a free opening or closing state.
[0028] Insert the anti-theft key of this application into the key slot 9 through its rotating portion 19. The key is uniquely designed, and the rotating recess 20 at its lower end matches the lock cylinder protrusion 5, ensuring that only the correct key can be inserted and operate the lock cylinder 2.
[0029] At the same time, the slots 21 on either side of the key's rotating portion 19 correspond to the positions of the bullet-shaped stopper 11. When the key is fully inserted, the rotating portion 19 pushes the bullet-shaped stopper 11 inward, temporarily releasing it from the locked state of the stopper hole 12. If an unmatched key is used, the bullet-shaped stopper 11 is pushed into the stopper hole 12, preventing the lock cylinder 2 from rotating, thereby achieving the anti-theft function.
[0030] When the key slot 21 is completely aligned with the bullet-shaped limit head 11, the elastic force of the spring 13 resets the bullet-shaped limit head 11 into the T-shaped mounting hole 10. At this time, the slot 21 and the bullet-shaped limit head 11 are locked together, allowing the key to rotate further.
[0031] When the key is turned, it drives the rotating cylinder 4 to rotate synchronously. Because the rotating cylinder 4 has a spiral hole 7 inside, the pin 8 is driven by the spiral hole 7 to move along the hole wall to the other end. During this process, the lock core rod 6 and the lock tongue 3 at its inner end rotate and move outward. Eventually, the lock tongue 3 extends and engages the keyhole in the door panel, locking the door panel.
[0032] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.
Claims
1. An anti-theft tension lock, comprising a lock housing (1), a lock core (2) and a lock tongue (3), characterized in that: The lock housing (1) is provided with an installation cavity inside, and the lock core (2) is installed in the installation cavity. The lock core (2) includes a rotating cylinder (4) rotatably arranged in the installation cavity of the lock housing (1), and a lock core protrusion (5) is provided at the upper end of the rotating cylinder (4). A lock core rod (6) is movably installed inside the rotating cylinder (4), and spiral holes (7) are provided on both sides of the rotating cylinder (4) and pin shafts (8) located in the spiral holes (7) are provided on both sides of the lock core rod (6). The inner end of the lock core rod (6) passes through the rotating cylinder (4) and the lock housing (1) in sequence, and the lock tongue (3) is installed at the inner end of the lock core rod (6).
2. The anti-theft tension lock according to claim 1, characterized in that: A key slot (9) is provided on the upper portion of the rotating cylinder (4) and the lock core protrusion (5) is arranged in the key slot (9); T-shaped mounting holes (10) communicating with the key slot (9) are provided on both sides of the upper portion of the rotating cylinder (4); a bullet-shaped limiting head (11) is provided in the T-shaped mounting hole (10); limiting holes (12) are provided on both sides of the upper end of the mounting cavity of the lock housing (1); a push block (14) is connected in the limiting hole (12) via a spring (13); one end of the bullet-shaped limiting head (11) contacts the push block (14) and the other end of the bullet-shaped limiting head (11) passes through the T-shaped mounting hole (10) and extends into the key slot (9).
3. The anti-theft tension lock according to claim 1, characterized in that: The outer side surface of the rotating cylinder (4) is provided with a sealing groove, and a sealing ring (15) is installed in the sealing groove.
4. The anti-theft tension lock according to claim 1, characterized in that: The outer surface of the lock housing (1) is provided with an external thread, and a locking nut (16) is threadedly sleeved on the external thread, and a fixing portion is formed between the locking nut (16) and the head of the lock housing (1).
5. A key corresponding to the anti-theft tension lock according to any one of claims 1 to 4, characterized in that: The key rod (17) comprises a key rod (17), the upper end of which is provided with a hand-held portion (18), the lower end of which is provided with a rotating portion (19) corresponding to the shape of a key slot (9), the lower end of which is provided with a rotating recess (20) corresponding to the shape of a lock core protrusion (5), and both sides of the rotating portion (19) are provided with slots (21) corresponding to the position of a bullet-shaped limiting head (11), and the bullet-shaped limiting head (11) can be pushed into the slots (21) by a pushing block (14).