A fingerprint-cleaning anti-theft combination lock structure

Abstract

This utility model discloses an anti-theft combination lock with fingerprint cleaning function, relating to the field of anti-theft lock technology, and solves the security risk of fingerprint residue being easily copied after use in existing fingerprint combination locks. The anti-theft combination lock includes a lock body, fingerprint screen, handle, outer frame, rotating ring, elastic pressure component, cleaning component, moving component, and range extender. The rotating ring is fixed to the handle and rotates synchronously with it. The elastic pressure component is located at the bottom of the outer frame and cooperates with the conch-shaped curved surface of the rotating ring. The cleaning component achieves elastic contact with the fingerprint screen through the moving component. The range extender, driven by the elastic pressure component, drives the cleaning component through the moving component to perform extended-range cleaning of the fingerprint screen. This utility model utilizes the power of the handle rotation to drive the cleaning mechanism to operate automatically, requiring no additional power source. The range extender design increases the cleaning coverage area, and the elastic contact structure ensures cleaning effectiveness, effectively removing fingerprint residue and significantly improving the anti-theft security of the combination lock.

Description

Technical Field

[0001] This utility model relates to the field of anti-theft lock technology, specifically to an anti-theft combination lock structure with fingerprint cleaning function. Background Technology

[0002] With the development of smart homes, fingerprint locks have become widely used in homes, offices, and other places due to their advantages such as eliminating the need for keys and ease of use. Existing fingerprint locks typically consist of a lock body, a fingerprint recognition screen, and a handle. After verifying their identity through the fingerprint recognition screen, users can unlock the door by turning the handle. However, existing fingerprint locks have significant security risks during use: after a user presses their finger on the fingerprint recognition screen, clear fingerprint marks remain on the screen surface. These residual fingerprints can be easily copied by criminals using methods such as adhesive tape or powder extraction, thus creating fake fingerprints to unlock the lock, seriously threatening users' property and personal safety.

[0003] A search revealed that CN212229701U discloses a fingerprint removal device for smart fingerprint locks. The device includes a main body with a mounting frame. A smart fingerprint lock is fitted within the mounting frame. Slots are provided on both sides of the mounting frame, and a fixed outer shell is fitted between these slots. A groove is provided on one side of the fixed outer shell, and a liquid storage box is fitted within this groove. A cleaning brush fixing plate is located inside the fixed outer shell, and a cleaning brush and a sponge are evenly connected to one side of the cleaning brush fixing plate. This fingerprint removal device for smart fingerprint locks can be easily fixed to the smart fingerprint lock, allowing for convenient and quick fingerprint removal after unlocking.

[0004] While the aforementioned fingerprint locks are equipped with manual wiping devices, they rely on user intervention, which can lead to forgetting to wipe the fingerprints, thus failing to fundamentally solve the problem of fingerprint residue. Furthermore, the few automatic cleaning devices available often employ additional motors, increasing the lock's structural complexity and manufacturing costs, and also resulting in high energy consumption and a greater risk of malfunction. Therefore, developing a security lock that requires no additional power and can automatically clean fingerprints during the user's unlocking process is crucial to solving these problems. Utility Model Content

[0005] The purpose of this invention is to overcome the security risks of fingerprint locks having fingerprint residue that is easily copied, as well as the defects of existing cleaning devices that rely on manual operation or additional power, and to provide an anti-theft lock with fingerprint cleaning function.

[0006] The technical solution of this utility model is as follows: A burglarproof combination lock structure with fingerprint cleaning function includes a lock body installed on the door panel, a fingerprint screen and a handle set on the lock body. After fingerprint recognition by the fingerprint screen, the door panel can be opened by rotating the handle. The lock body has an outer frame located outside the fingerprint screen, and also includes: The rotating ring is fixed to the handle and can rotate synchronously with the handle. The elastic pressure element, located at the bottom of the outer frame, can elastically expand and contract in conjunction with the rotation of the swivel ring; The cleaning component is located inside the outer frame; The moving part is hinged to the cleaning part and makes the cleaning part elastically contact the fingerprint screen surface; The range extender, driven by the elastic pressure component, moves the cleaning component to clean fingerprints from the fingerprint screen surface.

[0007] Preferably, the circumferential surface of the ring is provided with a notch, and one side of the notch is provided with a conch-shaped curved surface with a gradually increasing diameter.

[0008] Preferably, the elastic pressure member includes a vertically arranged telescopic rod, the upper end of which passes through the outer frame and is fixed with a fixing block, and a protruding ring is provided on the outer side of the telescopic rod.

[0009] Preferably, the elastic pressure member further includes a spring, one end of which abuts against the convex ring and the other end against the outer frame, and the lower end of the telescopic rod abuts against the conch-shaped surface under the elastic force of the spring.

[0010] Preferably, the cleaning component includes a pressure roller, a rotating seat is fixed at the middle position of the pressure roller, and a cotton strip that contacts the surface of the fingerprint screen is fixed on the pressure roller.

[0011] Preferably, the movable component includes a support, the rotating seat is hinged to the support via a rotating shaft, and a torsion spring is engaged at the hinge point between the rotating shaft and the support. A crossbar is fixed through the support, and sliders are fixed at both ends of the crossbar. Slide grooves are provided on both sides of the outer frame to guide the sliders.

[0012] Preferably, the range extender includes a shaft that is rotatably connected to a fixed block. Limiting grooves for limiting the shaft are provided on both sides of the outer frame. Gears are fixed to both ends of the shaft that extend outward from the limiting grooves. A first rack is engaged on one side of the gear and is fixed to the outer side of the outer frame. A second rack is engaged on the other side of the gear and is fixed to one side of the slider.

[0013] The beneficial effects of this utility model are as follows: 1. This utility model uses the action of the user turning the handle when opening the door as the power source. It can drive the cleaning mechanism to automatically complete the fingerprint cleaning without the need for an additional motor or other power device, avoiding the safety hazards caused by the user forgetting to wipe. It is convenient to use and highly reliable. 2. This utility model uses the gear-rack transmission structure of the range extender to transform the short-stroke movement of the elastic pressing part into the long-stroke movement of the cleaning part, thereby achieving full coverage cleaning of the fingerprint screen surface, effectively removing all residual fingerprints and improving anti-theft security. 3. In this utility model, the cleaning component achieves elastic contact with the fingerprint screen through a torsion spring, which can ensure that the cotton strip is in close contact with the screen to ensure the cleaning effect, and avoid the wear and tear caused by rigid contact to the fingerprint screen, thus extending the service life of the device. 4. The components of this utility model are integrated into the outer frame of the lock body, resulting in a compact structure. It does not require significant modifications to the overall structure of existing fingerprint locks, making it easy to manufacture, with lower manufacturing costs, and easy to promote and apply. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the overall structure of an anti-theft combination lock with fingerprint cleaning function proposed in this utility model; Figure 2 This is a front view schematic diagram of an anti-theft combination lock structure with fingerprint cleaning function proposed in this utility model; Figure 3 This is a schematic diagram of the rotating ring structure proposed in this utility model; Figure 4 This is a schematic diagram of the elastic pressure member structure proposed in this utility model; Figure 5 This is a schematic diagram of the cleaning component structure proposed in this utility model; Figure 6 This is a schematic diagram of the moving part structure proposed in this utility model; Figure 7 This is a schematic diagram of the range extender structure proposed in this utility model; In the diagram: 1. Lock body; 2. Fingerprint screen; 3. Handle; 4. Outer frame; 41. Slide groove; 42. Limiting groove; 5. Rotary ring; 51. Butt joint; 52. Conch-shaped curved surface; 6. Elastic pressure component; 61. Telescopic rod; 62. Fixing block; 63. Convex ring; 64. Spring; 7. Cleaning component; 71. Pressure roller; 72. Rotating seat; 73. Rotating shaft; 74. Torsion spring; 75. Cotton strip; 8. Moving component; 81. Support; 82. Crossbar; 83. Slider; 9. Extender component; 91. Shaft; 92. Gear; 93. First rack; 94. Second rack. Detailed Implementation

[0016] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0017] Please see Figures 1-7 This utility model provides an anti-theft combination lock structure with fingerprint cleaning function, including a lock body 1 installed on the door panel, a fingerprint screen 2 and a handle 3 set on the lock body 1. The fingerprint screen 2 is electrically connected to the lock cylinder control module inside the lock body 1. When the fingerprint is recognized, the lock cylinder is unlocked, and the user can turn the handle 3 to open the door panel. The lock body 1 is provided with an outer frame 4 on the outside of the fingerprint screen 2, and also includes a rotating ring 5, an elastic pressing member 6, a cleaning member 7, a moving member 8, and a range extender 9. The rotating ring 5 is fixed to the handle 3 and can rotate synchronously with the handle 3. The elastic pressing member 6 is located at the bottom of the outer frame 4 and can elastically extend and retract in coordination with the rotation of the rotating ring 5. The cleaning member 7 is located inside the outer frame 4. The moving member 8 is hinged to the cleaning member 7 and makes elastic contact between the cleaning member 7 and the surface of the fingerprint screen 2. The range extender 9, driven by the elastic pressing member 6, drives the cleaning member 7 through the moving member 8 to clean the fingerprints on the surface of the fingerprint screen 2.

[0018] Furthermore, a notch 51 is provided on the circumferential surface of the swivel ring 5, and a conch-shaped curved surface 52 with a gradually increasing diameter is provided on one side of the notch 51. The maximum diameter of the conch-shaped curved surface 52 is 10mm larger than the conventional circumferential diameter of the swivel ring 5, ensuring that the telescopic rod 61 can obtain sufficient upward stroke.

[0019] Furthermore, the elastic pressure member 6 includes a vertically arranged telescopic rod 61, the upper end of which passes through the outer frame 4 and is fixed with a fixing block 62, and the outer side of the telescopic rod 61 is provided with a protruding ring 63.

[0020] Furthermore, the elastic pressure member 6 also includes a spring 64. One end of the spring 64 abuts against the convex ring 63, and the other end abuts against the outer frame 4. The lower end of the telescopic rod 61 abuts against the conch curved surface 52 under the elastic force of the spring 64. The spring 64 is selected with an elastic coefficient of 5N / mm, which can not only ensure stable support for the telescopic rod 61, but also achieve rapid reset.

[0021] Furthermore, the cleaning component 7 includes a pressure roller 71, the axis of which is set horizontally and its length is adapted to the width of the fingerprint screen 2. A rotating seat 72 is fixed in the middle of the pressure roller 71, and a cotton strip 75 that contacts the surface of the fingerprint screen 2 is fixed on the pressure roller 71. The cotton strip 75 is made of microfiber material and has good water absorption and cleaning ability.

[0022] Furthermore, the movable component 8 includes a support 81, and a rotating seat 72 is hinged to the support 81 via a rotating shaft 73. A torsion spring 74 is engaged at the hinge between the rotating shaft 73 and the support 81. The torsion spring 74 always applies torque to the rotating shaft 73, so that the pressure roller 71 drives the cotton strip 75 to fit tightly against the surface of the fingerprint screen 2. A crossbar 82 is fixed through the support 81, and sliders 83 are fixed at both ends of the crossbar 82. Slide grooves 41 are provided on both sides of the outer frame 4 to guide the sliders 83 to slide.

[0023] Furthermore, the range extender 9 includes a shaft 91, which is rotatably connected to the fixing block 62. The outer frame 4 has limiting grooves 42 on both sides to limit the shaft 91. The two ends of the shaft 91 extend outward from the limiting grooves 42 and are fixed with gears 92. One side of the gear 92 is engaged with a first rack 93, which is fixed to the outer side of the outer frame 4. The other side of the gear 92 is engaged with a second rack 94, which is fixed to one side of the slider 83. The first rack 93 and the second rack 94 are arranged in parallel, and the tooth pitch of both matches the tooth pitch of the gear 92.

[0024] The working process of this embodiment is as follows: In the initial state, the lower end of the telescopic rod 61 abuts against the notch 51 of the rotating ring 5, the cleaning part 7 is located at the bottom of the fingerprint screen 2, and the cotton strip 75 is in contact with the lower edge of the fingerprint screen 2. The user presses the fingerprint screen 2 for recognition. After successful recognition, the lock cylinder unlocks. The user rotates the handle 3 clockwise, and the rotating ring 5 rotates clockwise synchronously with the handle 3. The conch surface 52 gradually contacts the lower end of the telescopic rod 61 and pushes the telescopic rod 61 to move upward, and the spring 64 is compressed. The telescopic rod 61 drives the fixing block 62 to move upward, and the fixing block 62 pushes the shaft 91 to slide upward along the limiting groove 42. The gears 92 at both ends of the shaft 91 rotate counterclockwise under the action of the first rack 93. The rotating gears 92 drive the second rack 94 to move upward, thereby driving the slider 83, the crossbar 82 and the support 81 to slide upward along the slide groove 41. During this process, the torsion spring 74 keeps the cotton swab 75 in close contact with the surface of the fingerprint screen 2. The cotton swab 75 slides upward with the support 81, thoroughly wiping away any remaining fingerprints on the surface of the fingerprint screen 2. When the handle 3 is rotated to its maximum angle, the cotton swab 75 moves to the top of the fingerprint screen 2, completing a thorough cleaning.

[0025] After the user opens the door and releases the handle 3, the handle 3 rotates counterclockwise to reset under the action of the reset spring inside the lock body 1. The rotating ring 5 resets accordingly, and the conch surface 52 moves away from the telescopic rod 61. The telescopic rod 61 resets downward under the action of the spring force of the spring 64, driving the shaft 91 and gear 92 to rotate in the opposite direction. This causes the slider 83, support 81 and cleaning part 7 to reset to their initial positions, ready for the next use.

[0026] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A burglarproof combination lock structure with fingerprint cleaning function, comprising a lock body (1) installed on a door panel, a fingerprint screen (2) and a handle (3) disposed on the lock body (1), wherein the fingerprint screen (2) can rotate the handle (3) to open the door panel after fingerprint recognition is successful, and the lock body (1) is provided with an outer frame (4) located outside the fingerprint screen (2), characterized in that, Also includes: The rotating ring (5) is fixed on the handle (3) and can rotate synchronously with the handle (3); The elastic pressure member (6) is located at the bottom of the outer frame (4) and can elastically expand and contract in coordination with the rotation of the rotating ring (5); Cleaning component (7) is located inside the outer frame (4); The movable part (8) is hinged to the cleaning part (7) and the cleaning part (7) is in elastic contact with the surface of the fingerprint screen (2); The range extender (9), driven by the elastic pressure member (6), uses the moving member (8) to extend the range of the cleaning member (7) to clean the fingerprints on the surface of the fingerprint screen (2).

2. The anti-theft combination lock structure with fingerprint cleaning function according to claim 1, characterized in that, The circumferential surface of the rotating ring (5) is provided with a notch (51), and one side of the notch (51) is provided with a conch-shaped surface (52) with a gradually increasing diameter.

3. The anti-theft combination lock structure with fingerprint cleaning function according to claim 2, characterized in that, The elastic pressure member (6) includes a vertically arranged telescopic rod (61), the upper end of which passes through the outer frame (4) and is fixed with a fixing block (62), and the outer side of the telescopic rod (61) is provided with a protruding ring (63).

4. The anti-theft combination lock structure with fingerprint cleaning function according to claim 3, characterized in that, The elastic pressure member (6) also includes a spring (64), one end of which abuts against the convex ring (63) and the other end against the outer frame (4). The lower end of the telescopic rod (61) abuts against the conch surface (52) due to the elastic force of the spring (64).

5. The anti-theft combination lock structure with fingerprint cleaning function according to claim 3, characterized in that, The cleaning component (7) includes a pressure roller (71), a rotating seat (72) is fixed at the middle position of the pressure roller (71), and a cotton strip (75) that contacts the surface of the fingerprint screen (2) is fixed on the pressure roller (71).

6. The anti-theft combination lock structure with fingerprint cleaning function according to claim 5, characterized in that, The movable component (8) includes a support (81), the rotating seat (72) is hinged to the support (81) via a rotating shaft (73), and a torsion spring (74) is engaged at the hinge point between the rotating shaft (73) and the support (81). A crossbar (82) is fixed through the support (81), and sliders (83) are fixed at both ends of the crossbar (82). Slide grooves (41) are provided on both sides of the outer frame (4) to guide the sliders (83) to slide.

7. The anti-theft combination lock structure with fingerprint cleaning function according to claim 6, characterized in that, The range extender (9) includes a shaft (91) which is rotatably connected to a fixed block (62). The outer frame (4) has limiting grooves (42) on both sides to limit the shaft (91). The two ends of the shaft (91) extend outward from the limiting grooves (42) and are fixed with gears (92). One side of the gear (92) is engaged with a first rack (93), which is fixed to the outer side of the outer frame (4). The other side of the gear (92) is engaged with a second rack (94), which is fixed to one side of the slider (83).

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