A multi-purpose lock picking tool

Abstract

The application discloses a multipurpose unlocking tool, and relates to the technical field of locks, which comprises a holding plate, a key base plate connected to one end of the holding plate and used for being inserted into a lock hole, at least one lock slot arranged on the key base plate, a magnet mounting slot arranged in the lock slot, a fixed magnet fixedly arranged in the magnet mounting slot, and at least one spoon piece, wherein the spoon piece is a metal piece capable of being adsorbed by the fixed magnet, the spoon piece is detachably mounted in the lock slot and is adsorbed and fixed with the fixed magnet, and the spoon piece is used for constituting unlocking teeth of a key. The application adopts the magnetic adsorption type detachable mounting structure of the fixed magnet matched with the adsorbable spoon piece, replaces the traditional mechanical fixing modes such as clamping or screw fastening, and makes the replacement operation of the spoon piece more convenient and efficient.

Description

Technical Field

[0001] This invention relates to the field of lock technology, specifically to a multi-purpose lock-picking tool. Background Technology

[0002] In daily life, locks are a common security device widely used in various scenarios such as door locks, safes, and padlocks. With the continuous development of lock technology, the internal lock cylinder structure has become increasingly diverse, commonly including pin tumbler lock cylinders, wafer lock cylinders, and round lock cylinders. For different lock cylinder structures, traditional unlocking methods usually involve using a dedicated mechanical key or specialized lock-picking tools. In lock manufacturing, repair, locksmithing, and emergency unlocking scenarios, it is often necessary to deal with multiple different types of lock cylinders, which places high demands on the versatility and flexibility of lock-picking tools.

[0003] In existing technology, to adapt to different types of lock cylinders, there exists an adjustable lock-picking tool with interchangeable key teeth. This type of tool typically includes a base plate that can be inserted into the keyhole. The base plate has several mounting positions, allowing the operator to selectively install different key blades at the corresponding mounting positions according to the internal tooth structure of the target lock cylinder, thereby forming an unlocking tooth profile that matches the target lock cylinder. This tool achieves the goal of adapting a single tool to multiple lock cylinders by changing or adding / removing key blades, thus improving the versatility of lock-picking tools to a certain extent. Some existing tools also have structures such as sliding baffles to cover the key blades when not in use, preventing accidental dislodgement or damage.

[0004] However, the aforementioned adjustable lock-picking tools in the prior art still have shortcomings. First, the key blade is usually fixed using mechanical connection structures such as snap-fit, screw fastening, or elastic clamping. These structures are cumbersome when frequently changing the key blade, and are prone to wear or loosening after long-term use, resulting in an unstable key blade and affecting the reliability of unlocking. Second, for complex locks such as double-sided lock cylinders or round lock cylinders, existing tools often require different base plate structures, making it difficult to achieve compatibility with multiple lock cylinder types on a single tool, and their versatility still needs improvement. In addition, the shielding structure used to protect the key blade in existing tools is usually only designed for one side. During transportation or carrying, if the tool is subjected to vibration, the key blade is still at risk of falling off, affecting the portability and service life of the tool. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a multi-purpose lock picking tool to solve the technical problems of unreliable key fixing method, inconvenient replacement, difficulty in compatibility with multiple types of lock cylinders, and easy detachment of key during transportation in existing adjustable lock picking tools.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-purpose lock-picking tool, comprising: a grip plate; a key base plate connected to one end of the grip plate for insertion into a keyhole; the key base plate having at least one lock groove, the lock groove having a magnet mounting groove, and a fixed magnet fixedly disposed therein; at least one key piece, the key piece being a metal piece capable of being attracted by the fixed magnet, the key piece being detachably installed in the lock groove and attracted and fixed by the fixed magnet, the key piece being used to form the unlocking teeth of a key.

[0007] The invention is further configured to include: a guide plate, fixedly disposed on the top of the grip plate; a guide groove is formed on the guide plate; a push plate, slidably disposed between the grip plate and the guide plate; a push handle, connected to the end of the push plate away from the key base plate and extending out of the guide groove; a baffle is provided at the end of the push plate near the key base plate, the shape of the baffle matching the shape of the lock groove, for covering the lock groove when the push plate slides forward.

[0008] The present invention is further configured such that a connecting rod is connected to the bottom of the end of the push plate away from the key base plate, and a limit groove is provided on the connecting rod.

[0009] The present invention is further configured such that the top and bottom surfaces of the key substrate are provided with the lock groove, the magnet mounting groove and the fixing magnet, and are correspondingly configured with the upper and lower layers of the key pieces.

[0010] The invention is further configured to include two sets of push plate assemblies, each set of push plate assemblies including a push plate and a baffle plate disposed at the end of the push plate. The two sets of push plate assemblies are driven by the same push handle and are used to cover the lock grooves on the top and bottom surfaces of the key base plate, respectively.

[0011] The present invention is further configured such that the key piece is a second key piece, the key substrate is a circular substrate, the bottom of the second key piece is provided with a snap-fit ​​groove, the second key piece is snap-fitted into the magnet mounting groove through the snap-fit ​​groove, and is fixed by the fixing magnet.

[0012] The invention is further configured such that the guide plate has an Ω-shaped guide groove that matches the shape of the second spoon piece, for guiding the push plate to slide.

[0013] The present invention is further configured such that the key plate is a first key plate or a second key plate, and the multiple key plates have different lengths and / or shapes to adapt to the tooth structure of different lock cylinders.

[0014] The present invention is further configured such that the fixed magnet is embedded in the magnet mounting groove, and the attraction force between the key piece and the fixed magnet is greater than the weight of the key piece and less than the external force required to pry up the key piece manually.

[0015] The present invention is further configured such that the grip plate and the key base plate are integrally formed or fixedly connected.

[0016] In summary, the present invention has the following main beneficial effects: This invention employs a magnetic, detachable mounting structure that combines a fixed magnet with an attractable key plate, replacing traditional mechanical fixing methods such as snap-fit ​​or screw fastening. This makes key plate replacement more convenient and efficient, and the magnetic force provides a stable and reliable fixation, effectively preventing the key plate from falling off due to wear or loosening after long-term use, significantly improving the reliability and lifespan of the lock-picking tool. Furthermore, by incorporating a sliding push plate and baffle structure, the lock groove containing the key plate can be effectively shielded during transportation or carrying, further preventing the key from falling off. The tool's portability and security are enhanced by preventing accidental detachment due to vibration. Furthermore, by providing lock grooves and magnet mounting grooves on both the top and bottom surfaces of the key base plate, the invention achieves compatibility with double-sided lock cylinders. By adding a second key piece and a circular key base plate, it further extends compatibility to circular lock cylinders. Thus, based on the same tool structure, it achieves compatibility with various types of lock cylinders, including flat, double-sided, and circular lock cylinders, greatly improving the versatility and applicability of the unlocking tool and meeting the flexible usage needs in various scenarios such as lock production, repair, and emergency unlocking. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an exploded view of the key substrate structure of the present invention; Figure 3 This is a bottom view of the overall structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the present invention; Figure 5 This is an exploded view of the structure of Embodiment 2 of the present invention; Figure 6 This is a bottom view of the structure of Embodiment 2 of the present invention; Figure 7 This is an exploded view of the structure of Embodiment 3 of the present invention; Figure 8 This is a schematic diagram of the structure of a third embodiment of the present invention.

[0018] In the diagram: 1. Grip plate; 2. Key base plate; 3. Lock groove; 4. Fixing magnet; 5. First key piece; 6. Guide plate; 7. Guide groove; 8. Push plate; 9. Push handle; 10. Limiting groove; 11. Connecting rod; 12. Snap-fit ​​groove; 13. Slide groove; 14. Magnet mounting groove; 15. Baffle; 16. Second key piece. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] The embodiments of the present invention will now be described.

[0021] like Figures 1 to 4 As shown, this embodiment provides a multi-purpose lock-picking tool, mainly used for opening everyday locks. This multi-purpose lock-picking tool includes a grip plate 1 and a key base plate 2. The grip plate 1, which is held by the operator, does not enter the keyhole during use. Its shape and size can be designed according to ergonomic requirements to facilitate force application and operation. The key base plate 2 is connected to one end of the grip plate 1 and is used to insert into the keyhole. The shape and thickness of the key base plate 2 are adapted to a conventional key so that it can be smoothly inserted into the keyhole of the target lock cylinder.

[0022] Multiple lock slots 3 are formed on the top surface of the key base plate 2, and the positions of the lock slots 3 correspond to the positions of the tumblers inside the lock cylinder. A magnet mounting slot 14 is further formed inside each lock slot 3, and a fixing magnet 4 is fixedly installed in the magnet mounting slot 14. The fixing magnet 4 can be firmly installed in the magnet mounting slot 14 by means of embedding, bonding or interference fit to ensure that it does not loosen or fall off during long-term use.

[0023] This multi-purpose lock-picking tool also includes at least one key plate. In this embodiment, the key plate is a first key plate 5, which is made of a metal material that can be attracted by a magnet, such as iron, nickel, or their alloy. The first key plate 5 is detachably installed in the lock groove 3. When it is inserted into the lock groove 3, the magnetic force generated by the fixing magnet 4 will attract and fix the first key plate 5, making it firmly attached to the lock groove 3. The first key plate 5 is used to form the unlocking teeth of the key. The operator can selectively install the first key plate 5 in the corresponding position of the lock groove 3 according to the internal tumbler structure of different lock cylinders, and leave it uninstalled in the position where it is not needed, thereby forming an unlocking teeth that matches the target lock cylinder. When it is necessary to replace or adjust the first key plate 5, simply apply a certain external force to pry the first key plate 5 up, which can separate it from the fixing magnet 4, making the operation very convenient. The attraction force between the fixed magnet 4 and the first key piece 5 is greater than the weight of the first key piece 5 itself, so as to ensure that the first key piece 5 will not fall off accidentally under normal use. At the same time, the attraction force is less than the external force required to pry up the first key piece 5, so as to ensure that the operator can disassemble it smoothly.

[0024] To prevent the first keyplate 5 from falling off due to vibration during transportation or carrying, this embodiment also includes an anti-fall-off structure. Specifically, a guide plate 6 is fixedly mounted on the top of the grip plate 1. The guide plate 6 can be fixedly connected to the grip plate 1 by welding, riveting, or integral molding. A guide groove 7 is formed vertically through the end of the guide plate 6 away from the key base plate 2. A sliding groove 13 is formed on the grip plate 1 at the bottom of the guide plate 6, and the sliding groove 13 and the guide plate 6 together form a sliding space. A push plate 8 is slidably mounted in this sliding space, and the push plate 8 can move back and forth along the length direction of the key base plate 2. A push handle 9 is fixedly connected to the top of the end of the push plate 8 away from the key base plate 2. The push handle 9 extends upward from the guide groove 7, and the operator can move the entire push plate 8 towards the key base plate 2 by pushing the push handle 9. A connecting rod 11 is also connected to the bottom of the push plate 8 away from the key base plate 2. A limiting groove 10 is provided on the connecting rod 11. The limiting groove 10 is used to cooperate with other limiting structures inside the tool to limit the sliding stroke of the push plate 8 and prevent it from being pushed out or dislodged.

[0025] A baffle 15 is provided at one end of the push plate 8 near the key base plate 2, and the shape of the baffle 15 matches the shape of the lock groove 3. When the push plate 8 is pushed forward completely by the push handle 9, the baffle 15 moves above the key base plate 2, completely blocking the key base plate 2 and the lock groove 3 thereon. At this time, even if the tool is vibrated, the first key piece 5 in the blocked lock groove 3 cannot come out upward, thus effectively preventing the first key piece 5 from falling off during transportation. Example

[0026] like Figures 5 to 6As shown, this embodiment provides another multi-purpose lock picking tool. Its main difference from Embodiment 1 is that this embodiment is suitable for more complex high-end locks such as safe locks, whose lock cylinders are typically double-sided. Therefore, based on Embodiment 1, this embodiment provides lock grooves 3 on both the top and bottom surfaces of the key base plate 2, and each lock groove 3 is provided with a corresponding magnet mounting groove 14 and a fixing magnet 4. Correspondingly, the key pieces are also configured in two pairs, one on top and one on the bottom. The first key piece 5 can be installed in either the lock groove 3 on the top surface or the lock groove 3 on the bottom surface of the key base plate 2. The operator can flexibly install the first key piece 5 at different positions on the top and bottom surfaces according to the upper and lower layers of the tumbler structure of the double-sided lock cylinder, thereby achieving adaptation to this type of complex lock cylinder.

[0027] Corresponding to the double-layer key plate mounting structure, the anti-detachment structure in this embodiment has also been adjusted accordingly. Specifically, in this embodiment, the bottom of the push plate 8 is no longer connected to the limiting groove 10, but is connected to another push plate 8, that is, two push plates 8 are arranged vertically, and the two push plates 8 are driven synchronously by the same push handle 9. Each push plate 8 has a baffle 15 near the end of the key base plate 2. The baffle 15 of the upper push plate 8 is used to cover the lock groove 3 on the top surface of the key base plate 2, and the baffle 15 of the lower push plate 8 is used to cover the lock groove 3 on the bottom surface of the key base plate 2. By pushing the push handle 9, the upper and lower push plates 8 can be moved forward synchronously, so that the two pairs of baffles 15 simultaneously cover the upper and lower key base plates 2 and lock groove 3, thereby effectively preventing the first key plate 5 of the upper and lower layers from falling off due to vibration during transportation. Example

[0028] like Figures 7 to 8 As shown, this embodiment provides another multi-purpose lock-picking tool. The difference between this embodiment and Embodiments 1 and 2 is that this embodiment is designed for a circular lock cylinder. In this embodiment, the key plate is a second key plate 16, which is Ω-shaped with its bottom sides bent inwards to form a snap-fit ​​structure. Correspondingly, the key base plate 2 is a circular base plate to fit the insertion hole of the circular lock cylinder. The top of the circular key base plate 2 has multiple lock slots 3, each of which also has a magnet mounting slot 14 and a fixing magnet 4. Unlike the previous embodiments, the bottom of the second key plate 16 has a snap-fit ​​groove 12. When the second key plate 16 is installed in the lock slot 3, the snap-fit ​​groove 12 and the edge of the magnet mounting slot 14 form a snap-fit ​​engagement. Simultaneously, the fixing magnet 4 exerts an attractive force on the second key plate 16. Through the dual effects of snap-fit ​​and magnetic attraction, the second key plate 16 is securely installed in the lock slot 3.

[0029] Operators can select and install second key pieces 16 of different lengths on the left and right sides according to the structural requirements of different positions inside the round lock cylinder. By adjusting the length of the second key pieces 16 in different positions, an unlocking tooth shape that matches the round lock cylinder can be formed, thereby achieving compatibility with various round lock cylinders.

[0030] In this embodiment, the anti-detachment structure has also been adapted. The shape of the guide groove 7 on the guide plate 6 matches the shape of the second key piece 16, that is, it is also set as Ω-shaped, so that the push plate 8 can adapt to the shape of the second key piece 16 during the sliding process, ensuring that the baffle 15 can effectively block the lock groove 3 and the second key piece 16.

[0031] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A multi-purpose lock-picking tool, comprising: Grip plate (1); The key base plate (2) is connected to one end of the grip plate (1) and is used to insert into the lock hole; At least one lock groove (3) is provided on the key base plate (2), and a magnet mounting groove (14) is provided in the lock groove (3), and a fixed magnet (4) is fixedly provided in the magnet mounting groove (14). At least one key piece, the key piece being a metal piece that can be attracted by the fixed magnet (4), the key piece being detachably installed in the lock groove (3) and attracted and fixed by the fixed magnet (4), the key piece being used to form the unlocking teeth of the key.

2. The multi-purpose lock-picking tool according to claim 1, characterized in that, Also includes: A guide plate (6) is fixedly disposed on the top of the grip plate (1); The guide plate (6) is provided with a guide groove (7); A groove (13) is provided on the gripping plate (1) at the bottom of the guide plate (6), and the groove (13) and the guide plate (6) together form a sliding space; The push plate (8) is slidably disposed between the gripping plate (1) and the guide plate (6); Push the handle (9), which is connected to the end of the push plate (8) away from the key base plate (2) and extends out of the guide groove (7); A baffle (15) is provided at one end of the push plate (8) near the key base plate (2). The shape of the baffle (15) matches the shape of the lock groove (3) and is used to cover the lock groove (3) when the push plate (8) slides forward.

3. The multi-purpose lock-picking tool according to claim 2, characterized in that, The bottom of the push plate (8) away from the key base plate (2) is connected to a connecting rod (11), and a limit groove (10) is provided on the connecting rod (11).

4. The multi-purpose lock-picking tool according to claim 1, characterized in that, The key base plate (2) is provided with the lock groove (3), the magnet mounting groove (14) and the fixing magnet (4) on both the top and bottom surfaces, and is provided with the upper and lower layers of key pieces respectively.

5. The multi-purpose lock-picking tool according to claim 4, characterized in that, It also includes two sets of push plate assemblies, each set of push plate assemblies includes a push plate (8) and a baffle (15) disposed at the end of the push plate (8). The two sets of push plate assemblies are driven by the same push handle (9) to cover the lock groove (3) on the top and bottom surfaces of the key base plate (2) respectively.

6. The multi-purpose lock-picking tool according to claim 1, characterized in that, The key piece is a second key piece (16), the key base plate (2) is a circular base plate, the bottom of the second key piece (16) is provided with a snap-fit ​​groove (12), the second key piece (16) is snapped into the magnet mounting groove (14) through the snap-fit ​​groove (12), and is attracted and fixed by the fixing magnet (4).

7. The multi-purpose lock-picking tool according to claim 6, characterized in that, The guide plate (6) has an Ω-shaped guide groove (7) that matches the shape of the second spoon piece (16) to guide the push plate (8) to slide.

8. The multi-purpose lock-picking tool according to claim 1, characterized in that, The key is either a first key (5) or a second key (16), and the lengths and / or shapes of the multiple key pieces are different to adapt to the tooth structure of different lock cylinders.

9. The multi-purpose lock-picking tool according to claim 1, characterized in that, The fixed magnet (4) is embedded in the magnet mounting groove (14). The attraction force between the key piece and the fixed magnet (4) is greater than the weight of the key piece and less than the external force required to pry up the key piece.

10. The multi-purpose lock-picking tool according to claim 1, characterized in that, The grip plate (1) and the key base plate (2) are integrally formed or fixedly connected.

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