A lock cylinder structure and a theftproof lock

Abstract

The utility model provides a kind of multiple anti-theft lock cylinder structure and anti-theft lock, lock cylinder structure includes cylindrical cylinder, its axis has cavity and one side has keyhole, there are several card slots in the same plane along the cavity radial, card slot side has at least two lock cylinder pin holes and pin, it is also provided with sunken groove, stop block and other structures.Anti-theft lock includes above-mentioned lock cylinder, lock body with lock body pin hole and pin, key with edge tooth.Edge tooth can be one row or two rows, it has different radial height and spacing on tooth block, tooth block has tooth, and it cooperates with lock cylinder pin;Lock body pin hole variable-diameter design, with spring and sleeve;Edge tooth has gap, and the stop body structure of card slot corresponds;Card slot plane and keyhole have included angle.The design increases technical unlocking difficulty, improves unlocking accuracy and stability, prevents illegal intrusion, and safeguards property and personal safety.

Description

Technical Field

[0001] This utility model relates to the field of anti-theft lock technology, and in particular to a lock cylinder structure and an anti-theft lock. Background Technology

[0002] In modern society, with the acceleration of urbanization and the improvement of people's living standards, the security of homes and businesses is receiving increasing attention. As an important tool for protecting property and personal safety, the anti-theft performance of locks directly affects the effectiveness of security.

[0003] However, traditional pin tumbler locks, due to their relatively simple structure, are easily cracked by technical lock-picking tools, resulting in poor anti-theft performance. Specifically, a traditional pin tumbler lock typically consists of a lock cylinder, a lock body, and a key. The key's teeth push the pins inside the lock cylinder to move, causing the lock cylinder to rotate and thus unlocking the lock.

[0004] Traditional pin tumbler locks have several obvious drawbacks: First, the pin positions in traditional pin tumbler locks are relatively fixed, making them easy for locksmiths to determine the position and height of the pins using detection tools, thus enabling them to pick the lock technically; second, the pin hole design of traditional pin tumbler locks is simple and lacks effective anti-jamming and anti-rebound mechanisms, making it easy for the pins to be forcibly jammed in the pin holes, causing the lock to fail; third, the key design of traditional pin tumbler locks is simple, usually with only one row of teeth, making them easy to copy or imitate, increasing the risk of theft.

[0005] Furthermore, traditional pin tumbler locks have a single unlocking method and lack multiple verification mechanisms, making them relatively easy to pick using technical means. Therefore, improving the anti-theft performance of locks and preventing technical unlocking has become a pressing technical problem for the lock industry.

[0006] Therefore, we propose a lock cylinder structure and an anti-theft lock. Utility Model Content

[0007] Therefore, it is necessary to address the technical problems of traditional pin tumbler locks, such as their simple structure, susceptibility to technical unlocking tools, and poor anti-theft performance, by providing a lock cylinder structure and anti-theft lock that can significantly improve the anti-theft performance of the lock, effectively prevent technical unlocking, and protect property and personal safety.

[0008] The first aspect of this utility model provides a lock cylinder structure, including: a cylindrical body with an axially arranged cavity at its axis, and a keyhole that mates with the cavity on one end face of the cylindrical body; The cylindrical body has several slots in the same plane along the radial direction of the cavity. At least two lock cylinder pin holes are provided on the side of the slot away from the cavity, and lock cylinder pins are slidably disposed in the lock cylinder pin holes.

[0009] This structure, with its multiple slots on the same plane and at least two lock cylinder pin holes and pins, increases the difficulty of technical unlocking. Traditional pin tumbler locks have relatively fixed pin positions, making them easy to unlock using detection tools to pinpoint their location and height. However, the multi-slot and multi-pin design of this lock cylinder structure makes it difficult for technical locksmiths to accurately judge and operate, thus improving anti-theft performance.

[0010] In other embodiments, the lock cylinder is further provided with at least one recessed groove communicating with the lock cylinder pin holes. The recessed groove design provides an additional movement space for the lock body pins. During technical unlocking, even if the lock body pins are not pushed correctly, they will enter the recessed groove, thereby preventing the lock cylinder from rotating, effectively increasing the difficulty of technical unlocking and improving the anti-theft performance of the lock.

[0011] In other embodiments, a stop is also provided on the cavity, and the stop is aligned with the keyhole on the same axis. The stop limits the movement of the edge teeth, ensuring the depth and position of the key insertion. Because the stop blocks the edge teeth, the axial extension distance of a traditional key cannot be known, thus increasing the difficulty of technical unlocking. Simultaneously, after the edge teeth engage with the slot, the stop disengages from the edge teeth, facilitating the subsequent forward advancement of the key, allowing the edge teeth to push open the lock cylinder pins. This design, unlike traditional pin tumbler locks, further increases the difficulty of technical unlocking.

[0012] A second aspect of this utility model provides an anti-theft lock, which includes the lock cylinder structure described above, and further includes: The lock body, connected to the lock cylinder, has a lock body pin hole with a pin inside, and the lock body pin hole and the lock cylinder pin hole are interconnected and on the same axis; and a key, which is movably inserted into the keyhole and cavity, the key including a key bar and edge teeth disposed on the key bar and on the same plane. This anti-theft lock employs multiple anti-theft functions to prevent others from opening it using technical unlocking (non-key unlocking), thus improving its anti-theft effect. Through the cooperation of the lock cylinder, lock body, and key, and various innovative designs, such as variable diameter lock body pin holes, countersunk grooves, and double rows of edge teeth, security is significantly improved. Traditional pin tumbler locks have a simple structure and are easily cracked by technical unlocking tools, while this anti-theft lock, through the combination of multiple mechanical structures, increases the difficulty of technical unlocking and effectively prevents illegal intrusion.

[0013] In other embodiments, the edge teeth are in one or two rows, and when there are two rows, both rows are on the same plane. Using double-row edge teeth improves anti-theft performance. By setting two rows of edge teeth on the key bar, the number of contact points with the lock cylinder is increased, thereby improving the accuracy and stability of unlocking. At the same time, double-row edge teeth also increase the difficulty of technical unlocking, as the positions and shapes of both rows of edge teeth must be matched simultaneously to unlock the lock. This design significantly improves the anti-theft performance of the lock and effectively prevents illegal intrusion.

[0014] In other embodiments, the edge teeth are provided with multiple tooth blocks of different radial heights and spacings, all located on the same plane. By setting multiple tooth blocks with different radial heights and spacings, each tooth block can engage with a specific position on the lock cylinder, thereby achieving precise unlocking. At the same time, this design also increases the difficulty of technical unlocking, as the position and shape of each tooth block must be accurately matched to unlock the lock. The fact that multiple tooth blocks are on the same plane ensures the stability and reliability of unlocking.

[0015] In other embodiments, the toothed block is provided with at least one tooth, and the radial height of the teeth on the same toothed block is different. The number of lock cylinder pins corresponds to the number of teeth. In the radial direction, the sum of the lengths of the teeth and the lock cylinder pins is equal to the length of the lock cylinder pin hole. By providing at least one tooth on the toothed block, and the different radial heights of the teeth on the same toothed block, each tooth can engage with a specific position on the lock cylinder pin. The correspondence between the number of lock cylinder pins and the number of teeth ensures that each lock cylinder pin can be pushed by a tooth. In the radial direction, the sum of the lengths of the teeth and the lock cylinder pins is equal to the length of the lock cylinder pin hole. This precise design ensures the accuracy and stability of unlocking.

[0016] In other embodiments, the lock body pin hole adopts a variable diameter design, with the inner diameter of the side of the lock body pin hole closer to the lock cylinder pin hole being larger than the inner diameter of the other side. A spring is installed inside the side of the lock body pin hole with a smaller inner diameter, engaging with the lock body pin. A sleeve is inserted into the side of the lock body pin hole furthest from the lock cylinder, and a spring is installed inside the sleeve. The inner diameter of the sleeve is smaller than the outer diameter of the lock body pin. The variable diameter design of the lock body pin hole limits the movement distance of the lock body pin by changing the hole size, thereby preventing the lock body pin from being forcibly jammed inside the lock body pin hole. The spring provides a restoring force, ensuring that the lock body pin automatically resets after the key is removed, maintaining the closed state of the lock. Using a sleeve insertion method to achieve the variable diameter design of the lock body pin hole simplifies the processing flow, improves production efficiency, and ensures the accuracy and consistency of the lock body pin hole. The spring inside the sleeve engaging with the lock body pin provides a stable restoring force, ensuring the normal operation of the lock. At the same time, the inner diameter of the sleeve is smaller than the outer diameter of the lock body pins, which effectively prevents the lock body pins from falling out and improves the reliability of the lock.

[0017] In other embodiments, a notch designed along the axial direction of the key bar is provided on the side of the edge teeth near the key bar, and multiple notches have different dimensions in the axial and / or radial directions. A stop structure corresponding to the notch is provided on the side of the slot near the cavity, and the stop structure is located along the axial movement path of the lock cylinder tumbler. By providing a notch designed along the axial direction of the key bar on the side of the edge teeth near the key bar, and providing a stop structure corresponding to the notch on the side of the slot near the cavity, technical unlocking tools are effectively prevented from directly contacting the lock cylinder tumbler from inside the cavity. At the same time, the different dimensions of multiple notches in the axial and / or radial directions increase the difficulty of matching. Only by using the key specially designed in this application, i.e., the edge teeth, tooth blocks, and teeth with notches, can the lock cylinder tumbler be disengaged and moved, thereby achieving precise unlocking and further improving anti-theft performance.

[0018] In other embodiments, the plane containing the plurality of slots has an angle greater than 0° with the keyhole. By changing the position and angle of the slots, the lock requires rotation to a certain angle to unlock. This design differs from traditional pin tumbler locks, where the pin positions are relatively fixed and easily determined by locksmiths. The design of this application makes it impossible for locksmiths to accurately determine the pin positions, thus increasing the difficulty of unlocking and significantly improving the lock's anti-theft performance, effectively preventing illegal intrusion. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a partial cross-sectional view of the present invention (when the key is not turned).

[0021] Figure 3 This is a partial cross-sectional view of the present invention (after the key is turned).

[0022] Figure 4 for Figure 3 A magnified view of part A in the middle.

[0023] Figure 5 This is a three-dimensional structural diagram of the key in this utility model.

[0024] Figure 6 This is a schematic diagram of another connection structure between the key, lock cylinder, and lock body in this utility model.

[0025] Figures 7-8 This is a schematic diagram of the working state of the present invention.

[0026] in: 100. Lock cylinder; 101. Keyhole; 102. Cavity; 1021. Stop block; 103. Slot; 1031. Stop body structure; 104. Lock cylinder pin hole; 1041. Countersunk groove; 105. Lock cylinder pin; 200. Lock body; 201. Lock body pin hole; 202. Lock body pin; 203. Spring; 204. Sleeve; 300. Key; 301. Key rod; 302. Side tooth; 303. Tooth block; 304. Tooth; 305. Notch. Detailed Implementation

[0027] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0028] Example 1 This embodiment discloses a lock cylinder 100, which is applied to an anti-theft lock. By adopting multiple anti-theft measures, it increases the difficulty of technical unlocking.

[0029] Specifically, such as Figures 2-4 As shown, the lock cylinder 100 in this embodiment includes a cylindrical body with an axially oriented cavity 102 at its axis. A keyhole 101, which mates with the cavity 102, is located on one end face of the cylindrical body. Several slots 103, aligned with the same plane, are radially arranged along the cavity 102. At least two lock cylinder pin holes 104 are located on the side of each slot 103 away from the cavity 102, and lock cylinder pins 105 are slidably disposed within each pin hole 104. The lock cylinder 100 is the core component of the entire anti-theft lock, and its structure is complex and precise. The keyhole 101 is used to insert the key 300, while the cavity 102 provides space for the key 300 to move. The slots 103 are designed to engage with the edge teeth 302 on the key 300, ensuring that only the correct key 300 can unlock the lock smoothly. The lock cylinder pin holes 104 and pins 105 are designed to prevent the lock cylinder 100 from being turned without the correct key 300 through mechanical blocking. This design not only improves the accuracy of unlocking but also greatly increases the difficulty of technical unlocking.

[0030] In this embodiment, along the rotation direction of the key 300, the lock cylinder 100 is also provided with at least one recessed groove 1041 communicating with the lock cylinder pin hole 104. As mentioned earlier, a conventional pin tumbler lock can prevent the lock body pin 202 from rebounding by rotating the lock cylinder 100, causing the edge of the lock cylinder pin hole 104 to engage. By adopting the recessed groove 1041 design, when technical unlocking is performed, the lock body pin 202, which should have been engaged in the lock cylinder pin hole 104, will enter the recessed groove 1041, which also prevents the lock cylinder 100 from rotating, thus achieving an anti-theft effect. When unlocking, the lock cylinder 100 needs to be flipped so that the lock body pin 202 returns to its original position, and then the key 300 is used to unlock. By providing the recessed groove 1041 communicating with the lock cylinder pin hole 104 on the lock cylinder 100, an additional movement space is provided for the lock body pin 202. During technical unlocking, even if the lock body pin 202 is not properly pushed, it will still enter the recess 1041, thus preventing the lock cylinder 100 from rotating. This design effectively increases the difficulty of technical unlocking and improves the lock's anti-theft performance. Furthermore, when unlocking, simply flip the lock cylinder 100 to return the lock body pin 202 to its original position, and then use the key 300 to unlock; the operation is simple and reliable.

[0031] In this embodiment, a stop 1021 is also provided on the cavity 102 to limit the edge teeth 302. The stop 1021 and the keyhole 101 are on the same axial direction. Since the stop 1021 blocks the edge teeth 302, if a traditional key 300 is used instead of the key 300 in this embodiment, its axial extension distance cannot be known, thus increasing the difficulty of technical unlocking. At the same time, after the edge teeth 302 engage with the slot 103, they disengage from the stop 1021, facilitating subsequent technical advancement so that the edge teeth 302 can push open the lock cylinder pin 105. This is different from traditional pin tumbler locks, which do not have this unlocking method, further increasing the difficulty of technical unlocking. By setting the stop 1021 on the cavity 102 to limit the edge teeth 302, the depth and position of the key 300 insertion are ensured. Because the stop 1021 blocks the edge tooth 302, the axial extension distance of the key 300 cannot be determined if a traditional key 300 is used, thus increasing the difficulty of technical unlocking. Simultaneously, after the edge tooth 302 engages with the slot 103, the stop 1021 disengages from the edge tooth 302, facilitating the subsequent forward advancement of the key 300, allowing the edge tooth 302 to push open the lock cylinder pin 105. This design, unlike traditional pin tumbler locks, further increases the difficulty of technical unlocking.

[0032] Example 2 like Figures 1-5As shown, this embodiment discloses an anti-theft lock, which includes the lock cylinder 100, lock body 200, and key 300 as in Embodiment 1. By employing multiple anti-theft functions, it prevents others from opening the lock using technical unlocking (non-key unlocking) methods, thus improving the anti-theft effect. The design concept of this multi-layered anti-theft lock lies in increasing the difficulty of technical unlocking through the combination of various mechanical structures, thereby effectively preventing illegal intrusion. Traditional pin tumbler locks are easily cracked by technical unlocking tools due to their simple structure. However, the multi-layered anti-theft lock of this embodiment significantly improves security by introducing several innovative designs, such as the variable diameter lock body pin tumbler hole 201, the countersunk groove 1041, and the double-row edge teeth 302.

[0033] Specifically, a detailed explanation will be provided with reference to the accompanying diagram.

[0034] like Figures 1-4 As shown, in this embodiment, the lock body 200 is connected to the lock cylinder 100. The lock body 200 is provided with a lock body pin hole 201, and a lock body pin 202 is provided in the lock body pin hole 201. The lock body pin hole 201 and the lock cylinder pin hole 104 are interconnected and on the same axis. The lock body pin hole 201 adopts a variable diameter design, and the inner diameter of the side of the lock body pin hole 201 closer to the lock cylinder pin hole 104 is larger than the inner diameter of the other side. A spring 203 that docks with the lock body pin 202 is provided inside the side of the lock body pin hole 201 with a smaller inner diameter. The interconnection design between the lock body pin hole 201 and the lock cylinder pin hole 104 ensures the mechanical linkage between the lock cylinder 100 and the lock body 200. The variable-diameter design of the lock body pin hole 201 is an innovation. By changing the size of the hole, it limits the movement distance of the lock body pin 202, thus preventing the lock body pin 202 from being forcibly jammed in the lock body pin hole 201. The spring 203 is designed to provide a restoring force, ensuring that the lock body pin 202 automatically resets after the key 300 is removed, maintaining the lock in a closed state. This design not only improves the security of the lock but also extends its service life.

[0035] In this embodiment, a sleeve 204 is inserted into the side of the lock body pin hole 201 away from the lock cylinder 100. A spring 203 is installed inside the sleeve 204, and the inner diameter of the sleeve 204 is smaller than the outer diameter of the lock body pin 202, creating a variable inner diameter effect for the lock body pin hole 201. This method improves processing efficiency. Using the sleeve 204 insertion method to achieve the variable diameter design of the lock body pin hole 201 not only simplifies the processing flow and improves production efficiency but also ensures the accuracy and consistency of the lock body pin hole 201. The spring 203 inside the sleeve 204 engages with the lock body pin 202, providing a stable rebound force and ensuring the normal operation of the lock. Simultaneously, the inner diameter of the sleeve 204 being smaller than the outer diameter of the lock body pin 202 effectively prevents the lock body pin 202 from falling out, improving the reliability of the lock.

[0036] In other embodiments, the lock body pin holes 201 can also be directly machined using a variable diameter machining process. Besides using a sleeve 204 for insertion, the lock body pin holes 201 can also be directly manufactured using variable diameter machining technology. Although this method is more difficult to manufacture, it allows for one-time forming, reduces assembly steps, and improves the overall strength of the lock. Variable diameter machining technology requires high-precision machine tools and skilled operation, but once mastered, it can produce high-quality, high-performance anti-theft locks.

[0037] By employing an inner diameter variation method, the movement distance of the lock body pin 202 is limited, avoiding the situation in traditional pin tumbler locks where the pin 202 is forcibly confined to the deepest part of the pin hole 201, preventing it from jamming and springing back. Furthermore, rotating the lock cylinder 100 causes the edge of the lock cylinder pin hole 104 to engage the pin 202, again preventing its rebound. By changing the diameter of the pin hole 201, the movement range of the pin 202 is limited, thus preventing it from jamming or springing back. This design effectively solves common problems in traditional pin tumbler locks, such as the pin 202 jamming and springing back, improving the lock's stability and reliability. Simultaneously, engaging the pin 202 with the edge of the lock cylinder pin hole 104 further enhances the lock's anti-theft performance.

[0038] like Figures 2-5 As shown, in this embodiment, the key 300 is movably inserted into the keyhole 101 and the cavity 102. The key 300 includes a key bar 301 and edge teeth 302 disposed on the key bar 301 and in the same plane. In this embodiment, the key 300 comprises two parts: the key bar 301 and the edge teeth 302. The key bar 301 is used to insert into the keyhole 101 and the cavity 102, providing stable support; the edge teeth 302 are used to cooperate with the slots 103 and the lock cylinder pins 105 on the lock cylinder 100 to achieve the unlocking function. The edge teeth 302 are in the same plane, facilitating insertion into the keyhole 101.

[0039] In this embodiment, the edge teeth 302 are arranged in one or two rows. When there are two rows of edge teeth 302, the two rows are on the same plane, that is, symmetrically arranged along the center of the key bar 301. Using double rows of edge teeth 302 improves the anti-theft effect. By setting two rows of edge teeth 302 on the key bar 301, the number of contact points with the lock cylinder 100 is increased, thereby improving the accuracy and stability of unlocking. At the same time, the double rows of edge teeth 302 also increase the difficulty of technical unlocking, because the positions and shapes of the two rows of edge teeth 302 must be matched simultaneously to unlock. This design significantly improves the anti-theft performance of the lock and effectively prevents illegal intrusion.

[0040] In this embodiment, the edge teeth 302 are provided with multiple tooth blocks 303 of different radial heights and spacings. These multiple tooth blocks 303 are located on the same plane, improving the anti-theft effect. By setting multiple tooth blocks 303 of different radial heights and spacings, each tooth block 303 can engage with a specific position on the lock cylinder 100, thereby achieving precise unlocking. At the same time, this design also increases the difficulty of technical unlocking, as the position and shape of each tooth block 303 must be accurately matched to unlock. The multiple tooth blocks 303 being on the same plane ensures the stability and reliability of unlocking.

[0041] In this embodiment, the tooth block 303 is provided with at least one tooth 304, and the radial height of the teeth 304 on the same tooth block 303 is different. The number of lock cylinder pins 105 corresponds to the number of teeth 304. In the radial direction, the sum of the lengths of the teeth 304 and the lock cylinder pins 105 is equal to the length of the lock cylinder pin hole 104. By providing at least one tooth 304 on the tooth block 303, and the different radial heights of the teeth 304 on the same tooth block 303, each tooth 304 can engage with a specific position on the lock cylinder pin 105. The correspondence between the number of lock cylinder pins 105 and the number of teeth 304 ensures that each lock cylinder pin 105 can be pushed by the tooth 304. In the radial direction, the sum of the lengths of the teeth 304 and the lock cylinder pins 105 is equal to the length of the lock cylinder pin hole 104. This precise design ensures the accuracy and stability of unlocking.

[0042] The design of the teeth 303 and 304 ensures that the teeth 304 correspond to the positions of the lock cylinder pins 105. The varying spacing and radial height between the multiple teeth 303, as well as the different spacing and radial height of the teeth 304, enhances the anti-theft effect. Precise control of the position, spacing, and radial height of the teeth 303 and 304 ensures that only the correct key 300 can successfully unlock the lock. This design not only improves the accuracy of unlocking but also significantly increases the difficulty of technical unlocking. Because the positions and shapes of multiple teeth 303 and 304 must be matched simultaneously to unlock the lock, it is very difficult to crack even using technical unlocking tools.

[0043] like Figure 6As shown, in another embodiment, the side tooth 302 has a notch 305 designed along the axial direction of the key bar 301 on the side near the key bar 301, and the multiple notches 305 have different dimensions in the axial and / or radial directions. A stop structure 1031 corresponding to the notch 305 is provided on the side of the slot 103 near the cavity 102, and the stop structure 1031 is located in the axial movement path of the lock cylinder pin 105. By using notches 305 with different axial and radial widths to correspond with the stop structure 1031, the difficulty of technical unlocking is increased. At the same time, the stop structure 1031 can block the lock cylinder pin 105, so that the lock cylinder pin 105 cannot be directly contacted from inside the cavity 102. Only by using the key 300 specially made in this application, that is, the side tooth 302, tooth block 303 and tooth 304 with notch 305, can the lock cylinder pin 105 be disengaged and pushed to move. By creating a notch 305 along the axial direction of the key bar 301 on the side of the edge tooth 302 near the key bar 301, and providing a stop structure 1031 corresponding to the notch 305 on the side of the slot 103 near the cavity 102, technical unlocking tools are effectively prevented from directly contacting the lock cylinder pin 105 from inside the cavity 102. Meanwhile, the multiple notches 305 have different dimensions in the axial and / or radial directions, increasing the difficulty of matching. Only by using the specially designed key 300 of this application, i.e., the edge tooth 302, tooth block 303, and tooth 304 with the notch 305, can the lock cylinder pin 105 be disengaged and moved, thus achieving precise unlocking.

[0044] In this embodiment, both the tooth 304 and the tooth block 303 are wedge-shaped, meaning that the radial height of the front end of the tooth 304 and the tooth block 303 along the insertion direction is less than the radial height of the rear end. This allows them to embed between the lock cylinder pin 105 and the stop structure 1031, driving the lock cylinder pin 105 to move. The design of the front end of the tooth 304 and the tooth block 303 being less than the radial height of the rear end along the insertion direction allows them to easily embed between the lock cylinder pin 105 and the stop structure 1031, driving the lock cylinder pin 105 to move. This design not only improves the accuracy of unlocking but also enhances the anti-theft performance of the lock. Even using advanced unlocking tools, it is difficult to simulate this wedge shape and position, making successful unlocking impossible.

[0045] In this embodiment, the planes of the plurality of slots 103 have an angle greater than 0° with the keyhole 101. By setting an angle greater than 0°, the lock requires rotation to a certain angle to unlock. Unlike traditional pin tumbler locks, where the approximate position of the pins can be determined, this design makes it impossible for locksmiths to accurately determine the pin positions, thus increasing the difficulty of unlocking. By changing the position and angle of the slots 103, the lock requires rotation to a certain angle to unlock. This design differs from traditional pin tumbler locks because the pin positions in traditional locks are relatively fixed and easily determined by locksmiths. The design of this application makes it impossible for locksmiths to accurately determine the pin positions, thus increasing the difficulty of unlocking. This design significantly improves the anti-theft performance of the lock and effectively prevents illegal intrusion.

[0046] This embodiment discloses a method for unlocking, including the following steps: S1. Insert the key 300 into the cavity 102 of the lock cylinder 100 through the keyhole 101 until the edge teeth 302 abut against the stop block 1021. This step marks the beginning of the unlocking process. By inserting the key 300 into the keyhole 101 and pushing it forward until the edge teeth 302 abut against the stop block 1021, the correct depth and position of the key 300 are ensured. The stop block 1021 is designed to limit the insertion, preventing the key 300 from being inserted too deeply or too shallowly, thus ensuring the smooth progress of subsequent unlocking steps.

[0047] S2. Rotate the key 300 to engage the edge teeth 302 with the slot 103. After the key 300 is inserted, the next step is to rotate the key 300 to engage the edge teeth 302 with the slot 103. This step is crucial to ensure the correct engagement of the edge teeth 302 and the slot 103. By rotating the key 300, the edge teeth 302 will move along the trajectory of the slot 103, preparing for the subsequent unlocking action. The design of the slot 103 serves as a guide, ensuring that the edge teeth 302 can accurately reach the designated position.

[0048] S3. Push the key 300 axially, causing the edge teeth 302 to move axially, driving the lock cylinder pins 105 radially and contacting the lock body pins 202, until the edge teeth 302 are stopped by the slot 103. After the edge teeth 302 contact the slot 103, the next step is to push the key 300 axially. This step is one of the core steps in the unlocking process. By pushing the key 300, the edge teeth 302 will move axially, driving the lock cylinder pins 105 radially. The movement of the lock cylinder pins 105 will contact the lock body pins 202, thereby releasing the obstruction of the lock body pins 202. At the same time, the edge teeth 302 will be stopped by the slot 103, ensuring the accuracy and stability of the unlocking action. This step cleverly utilizes mechanical principles to achieve precise unlocking.

[0049] S4. Rotate the key 300 again to rotate the lock cylinder 100, thus unlocking the door. After the edge teeth 302 are limited by the slot 103, the final step is to rotate the key 300 again to rotate the lock cylinder 100. This step is the final step in the unlocking process. By rotating the key 300, the lock cylinder 100 will rotate accordingly, thereby releasing the lock from its closed state. At this point, the door or lock can be opened, completing the unlocking action. This step is simple and effective, ensuring the convenience and reliability of unlocking.

[0050] By using the specially designed key 300 of this application, the key is pushed into the keyhole 101 a certain distance (stopped by the stop block 1021), then rotated at a specific angle (stopped by the slot 103), and then pushed forward (stopped by the axial side wall of the slot 103). Only then can the side teeth 302 and the locking teeth 304 push open the lock cylinder pin 105. Then, by rotating the key 300, the lock cylinder 100 is rotated as a whole to unlock. This unlocking method is different from the traditional pin tumbler lock, so it has a better anti-theft function.

[0051] The unlocking method of this application, employing a specially designed key 300 and unique unlocking steps, achieves an unlocking method distinct from traditional pin tumbler locks. This unlocking method not only improves the accuracy and stability of unlocking but also significantly increases the difficulty of technical unlocking. Because the shape, position, and unlocking steps of the key 300 must be matched simultaneously for successful unlocking, it is very difficult to crack even using technical unlocking tools. This design significantly improves the anti-theft performance of the lock and effectively prevents illegal intrusion. Furthermore, the unlocking method of this application also has the advantages of simple operation and high reliability, making it suitable for various occasions requiring high security.

[0052] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A lock cylinder structure, characterized in that, include: A cylindrical body with an axially oriented cavity at its center and a keyhole for engaging with the cavity on one end face of the cylindrical body. The cylindrical body has several slots in the same plane along the radial direction of the cavity. At least two lock cylinder pin holes are provided on the side of the slot away from the cavity, and lock cylinder pins are slidably disposed in the lock cylinder pin holes.

2. The lock cylinder structure as described in claim 1, characterized in that: The lock cylinder is also provided with at least one recessed groove that communicates with the lock cylinder pin hole.

3. A lock cylinder structure as described in claim 2, characterized in that: A stop block is also provided on the cavity, and the stop block and the keyhole are on the same axis.

4. A burglarproof lock, comprising a lock cylinder structure as described in any one of claims 1-3, characterized in that: Also includes: A lock body, connected to a lock cylinder, has a lock body pin hole, a lock body pin is disposed within the lock body pin hole, and the lock body pin hole and the lock cylinder pin hole are interconnected and on the same axis. A key, which is movably inserted into the keyhole and cavity, the key including a key bar and edge teeth disposed on the key bar and in the same plane.

5. The anti-theft lock as described in claim 4, characterized in that: The edge teeth are one or two rows, and when there are two rows of edge teeth, the two rows are on the same plane.

6. The anti-theft lock as described in claim 5, characterized in that: The edge teeth are provided with multiple tooth blocks of different radial heights and different spacings, and the multiple tooth blocks are located on the same plane.

7. The anti-theft lock as described in claim 6, characterized in that: The tooth block is provided with at least one tooth, and the radial height of the tooth on the same tooth block is different. The number of lock cylinder pins corresponds to the number of teeth. In the radial direction, the sum of the lengths of the teeth and the lock cylinder pins is equal to the length of the lock cylinder pin hole.

8. The anti-theft lock as described in claim 4, characterized in that: The lock body pin hole adopts a variable diameter design, and the inner diameter of the lock body pin hole on the side closer to the lock cylinder pin hole is larger than the inner diameter on the other side. A spring that mates with the lock body pin is provided inside the side of the lock body pin hole with a smaller inner diameter. A sleeve is inserted into the side of the lock body pin hole away from the lock cylinder. A spring is installed inside the sleeve, and the inner diameter of the sleeve is smaller than the outer diameter of the lock body pin.

9. The anti-theft lock as described in claim 7, characterized in that: The edge tooth has a notch designed along the axial direction of the key bar on the side near the key bar, and the multiple notches have different dimensions in the axial and / or radial directions. A stop structure corresponding to the notch is provided on the side of the slot near the cavity, and the stop structure is located in the axial movement path of the lock cylinder pin hole.

10. The anti-theft lock as described in claim 4, characterized in that: There is an angle greater than 0° between the plane where the multiple card slots are located and the keyhole.

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