Anti-copy key and lock
By designing a tooth covering the relationship on the lock key rod, the problem of reproducibility of existing lock keys is solved, effectively preventing the key from being copied, and the risk of theft is reduced.
Patent Information
- Application Number
- CN202421714744.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-07-18
AI Technical Summary
The keys of existing locks are replicable and are easily copied through photography or projection, which increases the risk of theft.
An anti-copy key is designed, and a tooth is provided on the key rod. The first positive projection area of the tooth covers the second positive projection area, and the area of the positive projection area of the first end is greater than the area of the positive projection area of the second end, resulting in the shape of the tooth being blocked under the positive projection and is difficult to replicate.
The tooth shape, position and size of the copy to the correct tooth is effectively avoided, thereby preventing the copying of the key and reducing the chance of theft.
Smart Images
Figure CN223034704U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of locks, and particularly relates to an anti-copying key and a lock. Background Art
[0002] Modern locks have been developed for more than a hundred years, and people have thoroughly studied their structures and mechanisms. Currently, the widely used lock is a mechanical pin tumbler lock, and its key is replicable and not safe to use. When the key is exposed outdoors or during the process of using the key, if the tooth shape of the key unlocking section is noted by others or photographed or projected, it is very convenient to replicate the same key, increasing the probability of theft. Content of the Utility Model
[0003] The purpose of the utility model is to provide an anti-copying key that can prevent replication by means of photographing or projection.
[0004] Achieving the above purpose includes the following technical solutions.
[0005] The utility model provides an anti-copying key in a first aspect. The anti-copying key includes a handle, a key rod, and tooth bodies; the handle is connected to the key rod, and a plurality of the tooth bodies are arranged on the key rod;
[0006] One end of the tooth body away from the key rod is the first end, and one end of the tooth body close to the key rod and opposite to the first end is the second end. The orthographic projection area of the first end of at least one tooth body covers the orthographic projection area of the second end, and the area of the orthographic projection area of the first end of the tooth body is larger than the area of the orthographic projection area of the second end.
[0007] In some embodiments, at least one side surface of the tooth body adjacent to the key rod is an inclined wall, and the distance between the edge of the inclined wall close to the first end of the tooth body and the central axis of the key rod is a first distance, and the distance between the edge of the inclined wall close to the second end of the tooth body and the central axis of the key rod is a second distance, and the first distance is greater than the second distance.
[0008] In some embodiments, the inclination angle of the inclined wall relative to the vertical plane is 10° - 20°.
[0009] In some embodiments, the inclination angle of the inclined wall relative to the vertical plane is 10° - 15°.
[0010] In some embodiments, at least one side surface of at least one tooth body adjacent to the key rod is a straight wall surface, and the straight wall surface is perpendicular to the key rod.
[0011] In some of these embodiments, each of the tooth bodies is arranged in sequence along the axial direction of the key rod and smoothly transitions to form a serpentine groove on the key rod.
[0012] In some of these embodiments, two side-by-side serpentine grooves are provided on the key rod, and the shapes of the two serpentine grooves are different.
[0013] In some of these embodiments, the two serpentine grooves include a first serpentine groove and a second serpentine groove. For the tooth bodies corresponding to the first serpentine groove, each side adjacent to the key rod is a straight wall surface, and for the tooth bodies corresponding to the second serpentine groove, the sides adjacent to the key rod are inclined wall surfaces.
[0014] In some of these embodiments, tooth bodies are provided on both opposite sides of the first serpentine groove; on one side of the second serpentine groove, there is a tooth body, and on the other side is the edge of the key rod.
[0015] In a second aspect of the embodiments of the present invention, a lock is provided. The lock includes a lock body and the anti-copying key as described above. The lock body has a lock core, and the key rod of the anti-copying key can be inserted into the lock core for unlocking operations.
[0016] The technical solution provided by the present invention has the following advantages and effects:
[0017] In this anti-copying key, by providing tooth bodies on the key rod, where one end of the tooth body away from the key rod is the first end and the end of the tooth body close to the key rod is the second end. By setting the orthographic projection area of the first end of at least one tooth body to cover the orthographic projection area of the second end, and the area of the orthographic projection area of the first end of the tooth body being larger than the area of the orthographic projection area of the second end, when using this anti-copying key or when the anti-copying key is exposed outdoors and others try to record or photograph or project the shape of the tooth bodies, due to the shielding of the first end of the tooth body from the second end of the tooth body, it can effectively prevent the correct tooth shape, position, and size of the tooth bodies from being copied, thus effectively preventing the duplication of the same key and achieving a good anti-copying effect and reducing the probability of theft. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a schematic diagram of the overall structure of the lock of the embodiments of the present invention;
[0019] Figure 2 is a schematic diagram of the overall structure of the anti-copying key of the embodiments of the present invention;
[0020] Figure 3 is Figure 2 a schematic diagram of the structure of the key rod of the anti-copying key of
[0021] Figure 4 is Figure 3Schematic diagram of the bottom view structure of the key rod of the anti-copying key.
[0022] Explanation of reference numerals:
[0023] 100, lock;
[0024] 10, anti-copying key;
[0025] 1, handle; 2, key rod; 21, serpentine groove; 211, first serpentine groove; 212, second serpentine groove; 3, tooth body; 31, inclined wall; 32, straight wall; 33, first end; 34, second end;
[0026] 20, lock body. Detailed implementation manners
[0027] For the convenience of understanding the present utility model, the specific embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings of the specification.
[0028] Unless otherwise specified or defined, the "first, second..." used herein is only for differentiating names and does not represent a specific quantity or order.
[0029] Unless otherwise specified or defined, the term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0030] It should be noted that "fixed to" and "connected to" herein can be directly fixed or connected to an element, or indirectly fixed or connected to an element.
[0031] The embodiment of the present utility model provides a latter anti-copying key 10, as Figures 1 to 4 shown. The anti-copying key 10 includes a handle 1, a key rod 2, and a tooth body 3. The handle 1 is connected to the key rod 2, and a plurality of the tooth bodies 3 are provided on the key rod 2. Among them, the handle 1 facilitates the user to hold, the key rod 2 is used to adapt to a matching lock body 20, and the key rod 2 can be inserted into the lock core of the lock body 20 for unlocking operation. The tooth bodies 3 on the key rod 2 are used to cooperate with the blades in the lock core to move the blades to the unlocking position. The number of the tooth bodies 3 can be specifically set according to the number of the blades in the lock core, and no special limitation is made here.
[0032] Wherein, one end of the tooth body 3 away from the key rod 2 is the first end 33, and one end of the tooth body 3 close to the key rod 2 and opposite to the first end 33 is the second end 34. The orthographic projection area of the first end 33 of at least one tooth body 3 covers the orthographic projection area of the second end 34, and the area of the orthographic projection area of the first end 33 of the tooth body 3 is larger than the area of the orthographic projection area of the second end 34. Wherein, the end of the tooth body 3 away from the key rod 2 is the first end 33, that is, the top end of the tooth body 3, which is also the side directly facing the user in the forward direction. The end of the tooth body 3 close to the key rod 2 is the second end 34, that is, the bottom end of the tooth body 3, which is connected to the key rod 2. By setting the orthographic projection area of the first end 33 of at least one tooth body 3 to cover the orthographic projection area of the second end 34, and the area of the orthographic projection area of the first end 33 of the tooth body 3 is larger than the area of the orthographic projection area of the second end 34, that is, the side wall of the tooth body 3 is not a straight surface structure, so that the first end 33 of the tooth body 3 can block the second end 34 in the forward direction, and the specific shape, position and size of the tooth body 3 cannot be clearly known from the surface. Therefore, when using the anti-copying key 10 or when the anti-copying key 10 is exposed outdoors and others use the method of taking notes, taking pictures or projecting to take pictures of the tooth shape of the tooth body 3 of the anti-copying key 10, due to the blocking of the first end 33 of the tooth body 3 on the second end 34 of the tooth body 3, it is difficult to copy the correct tooth shape, position and size of the tooth body 3.
[0033] In summary, the anti-copying key 10 is provided with a tooth body 3 on the key rod 2. One end of the tooth body 3 away from the key rod 2 is the first end 33, and one end of the tooth body 3 close to the key rod 2 is the second end 34. By setting the orthographic projection area of the first end 33 of at least one tooth body 3 to cover the orthographic projection area of the second end 34, and the area of the orthographic projection area of the first end 33 of the tooth body 3 is larger than the area of the orthographic projection area of the second end 34, when using the anti-copying key 10 or when the anti-copying key 10 is exposed outdoors and others use the method of taking notes, taking pictures or projecting to take pictures of the shape of the tooth body 3, due to the blocking of the first end 33 of the tooth body 3 on the second end 34 of the tooth body 3, it can effectively avoid copying the correct tooth shape, position and size of the tooth body 3, thereby effectively avoiding copying the same key, achieving a good anti-copying effect and reducing the theft probability.
[0034] In some embodiments, as Figure 3 and Figure 4 shown, at least one side surface of the tooth body 3 adjacent to the key rod 2 is an inclined wall 31, and the distance between the edge of the inclined wall 31 close to the first end 33 of the tooth body 3 and the central axis of the key rod 2 is the first distance ( Figure 3 X inFigure 3 Y) in it, and the first distance X is greater than the second distance Y. It should be noted that the key rod 2 is in the shape of an approximate rectangular parallelepiped plate, and the central axis is the central axis of the key rod 2 extending along the length direction. Among them, by forming the inclined wall 31 on the side surface of the tooth body 3, the structure can be simple and easy to manufacture, and the first end 33 of the tooth body 3 can completely cover the second end 34 of the tooth body 3, having a good anti-copying effect. Of course, in other embodiments, the shape of the tooth body 3 is not limited to the structure of the inclined wall 31, and it only needs to satisfy that the orthographic projection area of the first end 33 of the tooth body 3 covers the orthographic projection area of the second end 34, and the area of the orthographic projection area of the first end 33 of the tooth body 3 is greater than the area of the orthographic projection area of the second end 34, and no special limitation is made here. In addition, the inclination angles of the respective tooth bodies 3 can be the same or different, preferably different, so as to further increase the difficulty of copying by means of photos or projections. Specifically, in some preferred embodiments, the inclination angle ( Figure 4 θ in it) is 10° to 20°, for example, it can be 10°, 11°, 11°, 12°, 13°, 14°, 15°, 16°, 17°, 18°, 19°, 20°, etc., and no special limitation is made here. Within this range of inclination angles, it is convenient for manufacturing, can smoothly perform the unlocking operation, and has a good anti-copying effect. Preferably, the inclination angle θ of the inclined wall 31 relative to the vertical plane is 10° to 15°.
[0035] In some embodiments, such as Figure 4 shown, at least one side surface of at least one of the tooth bodies 3 adjacent to the key rod 2 is a straight wall surface 32, and the straight wall surface 32 is perpendicular to the key rod 2. Among them, by respectively arranging the plurality of tooth bodies 3 into a matching structure of the straight wall surface 32 and the inclined wall 31, the complexity of the matching lock body 20 can be increased, thereby further reducing the theft probability.
[0036] In some embodiments, such as Figure 2 and Figure 3As shown, each tooth body 3 is sequentially arranged along the axial direction of the key rod 2 and smoothly transitions to form a serpentine groove 21 on the key rod 2. The curvature of the serpentine in the groove enables the anti-copying key 10 to resist the small protrusion of the lock core driving handle when inserted, thereby starting the unlocking mechanism of the lock core. The geometric shape design of the serpentine groove 21 allows only the correct key to completely push all the internal lock plates to open the door lock. If the wrong key is used or the key is incomplete, it cannot be unlocked. Compared with the ordinary lock core, the advantage of the serpentine groove 21 is its higher security. Since the shape of the anti-copying key 10 is manufactured according to the groove design, and the anti-copying key 10 has a plurality of tooth bodies 3 corresponding to the plurality of blades in the lock core, only the correct key can accurately move all the lock plates to open the door lock, avoiding the problem of being easily cracked.
[0037] In some embodiments, Figure 3 As shown, the key rod 2 is provided with two serpentine grooves 21 arranged side by side, and the shapes of the two serpentine grooves 21 are different. Among them, a plurality of teeth 3 can be provided on the sides of the two serpentine grooves 21, which increases the complexity and compactness of the structure, further increases the difficulty of copying the key, and further reduces the probability of theft.
[0038] In some embodiments, Figure 3 As shown, the two serpentine grooves 21 include a first serpentine groove 211 and a second serpentine groove 212. The tooth bodies 3 corresponding to the first serpentine groove 211 and the sides adjacent to the key rod 2 are all straight walls 32, and the tooth bodies 3 corresponding to the second serpentine groove 212 and the sides adjacent to the key rod 2 are all inclined walls 31. On the one hand, the complexity of the structure can be increased, and on the other hand, the structure has regularity, which is convenient for production and manufacturing. Specifically in this embodiment, the tooth bodies 3 are arranged on the opposite sides of the first serpentine groove 211; the tooth bodies 3 are arranged on one side of the second serpentine groove 212, and the other side is the edge of the key rod 2.
[0039] In some embodiments, a blocking portion is provided on a side of the key rod 2 close to the handle 1 , and the blocking portion blocks the key rod 2 from being excessively inserted into the lock core of the lock body 20 , so that the key rod 2 can accurately push the blade of the lock body 20 .
[0040] The present utility model also provides a lock 100, such as Figures 1 to 4As shown, the lock 100 includes a lock body 20 and the anti-copying key 10 as described above. The lock body 20 has a lock core. The key rod 2 of the anti-copying key 10 can be inserted into the lock core to perform an unlocking operation. A blade is provided in the lock core. After the key rod 2 of the anti-copying key 10 is inserted into the lock core, the blade is moved to rotate to perform an unlocking operation. Since the lock body 20 is not a structure to be protected by the present utility model and can be a conventional blade-shaped lock, it will not be described in detail here. The shape of the toggled position of the blade is adapted to the shape of the key rod 2.
[0041] According to the above, the anti-copying key 10 of the lock 100 is provided with a tooth body 3 on the key rod 2, wherein the end of the tooth body 3 away from the key rod 2 is the first end 33, and the end of the tooth body 3 close to the key rod 2 is the second end 34, and the orthographic projection area of at least one of the first ends 33 of the tooth body 3 covers the orthographic projection area of the second end 34, and the orthographic projection area area of the first end 33 of the tooth body 3 is larger than the orthographic projection area area of the second end 34, and the blades in the lock body 20 are also adaptively designed in structure, so that when the anti-copying key 10 is used or when the anti-copying key 10 is exposed outdoors and the shape of the tooth body 3 of the anti-copying key 10 is recorded or photographed or projected by others, due to the shielding of the second end 34 of the tooth body 3 by the first end 33 of the tooth body 3, it can effectively avoid copying to the correct tooth shape, position and size of the tooth body 3, thereby effectively avoiding copying the same key, achieving a good anti-copying effect, and reducing the chance of theft.
[0042] The above embodiments are not exhaustive enumerations based on the present invention, and there may be multiple other implementations not listed. Any replacement and improvement made without violating the concept of the present invention shall fall within the protection scope of the present invention.
Claims
1. Anti-copying key, characterized in that: The anti-copying key comprises a handle, a key rod and a tooth body; the handle is connected to the key rod, and a plurality of the tooth bodies are arranged on the key rod; The end of the tooth body away from the key rod is a first end, and the end of the tooth body close to the key rod and opposite to the first end is a second end. The orthographic projection area of the first end of at least one of the tooth bodies covers the orthographic projection area of the second end, and the orthographic projection area of the first end of the tooth body is larger than the orthographic projection area of the second end.
2. The anti-copying key according to claim 1, characterized in that: At least one side surface of the tooth body adjacent to the key rod is an inclined wall, and the distance between the edge of the inclined wall close to the first end of the tooth body and the central axis of the key rod is a first distance, and the distance between the edge of the inclined wall close to the second end of the tooth body and the central axis of the key rod is a second distance, and the first distance is greater than the second distance.
3. The anti-copying key according to claim 2, characterized in that: The inclination angle of the inclined wall relative to the vertical plane is 10° to 20°.
4. The anti-copying key according to claim 3, characterized in that: The inclination angle of the inclined wall relative to the vertical plane is 10° to 15°.
5. The anti-copying key according to claim 1, characterized in that: At least one side surface of at least one of the tooth bodies adjacent to the key rod is a straight wall, and the straight wall is vertically arranged relative to the key rod.
6. The anti-copying key according to any one of claims 2 to 5, characterized in that: The tooth bodies are arranged in sequence along the axial direction of the key rod and transition smoothly to form a serpentine groove on the key rod.
7. The anti-copying key according to claim 6, characterized in that: The key rod is provided with two serpentine grooves arranged side by side, and the two serpentine grooves have different shapes.
8. The anti-copying key according to claim 7, characterized in that: The two serpentine grooves include a first serpentine groove and a second serpentine groove, wherein the tooth bodies corresponding to the first serpentine groove and the sides adjacent to the key rod are straight walls, and the tooth bodies corresponding to the second serpentine groove and the sides adjacent to the key rod are inclined walls.
9. The anti-copying key according to claim 8, characterized in that: The tooth bodies are arranged on opposite sides of the first serpentine groove; the tooth body is arranged on one side of the second serpentine groove, and the other side is the edge of the key rod.
10. A lock, characterized in that: The lock comprises a lock body and the anti-copying key according to any one of claims 1 to 9, wherein the lock body has a lock core, and a key rod of the anti-copying key can be inserted into the lock core for unlocking operation.