Mechanical and electronic dual-purpose anti-theft coded lock

Abstract

The utility model particularly relates to a mechanical and electronic dual-purpose anti-theft coded lock which comprises a shell and a handle, the handle is installed on the front surface of the shell, a fingerprint detection head is arranged on the handle, a circuit board, a motor and a mechanical lock cylinder are arranged in the shell, the handle is connected with a rotating disc, and the fingerprint detection head is connected with the circuit board through a wire. A rotating shaft is arranged on the front surface of the rotating disc, a limiting concave position is arranged on the edge of the rotating disc, the motor is provided with a pushing shaft, a sliding piece capable of sliding on the pushing shaft is installed at one end of the pushing shaft, the sliding piece is provided with an inserting block, the inserting block is arranged in the limiting concave position, and one end of the mechanical lock cylinder faces the sliding piece. According to the mechanical and electronic dual-purpose anti-theft coded lock, the sliding piece is pushed to move upwards through the motor and the mechanical lock cylinder, the inserting block of the sliding piece is separated from the limiting concave position, the overall structure can be simplified, and use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mechanical electronic dual-purpose anti-theft coded lock. BACKGROUND

[0002] At present, with the rapid development of society, people's safety consciousness is increasing, and various locks are widely used by people. In our daily life, the common lock unlocking mode is common key unlocking, password unlocking, fingerprint lock and the like, and the password unlocking and fingerprint unlocking are mainly locked and unlocked through the electronic chip, and the user inputs the password or fingerprint on the password board, and the electronic chip receives the signal to unlock. However, since the electronic chip is used, the chip fault is prone to occur, which leads to the unlocking or locking. And the traditional mechanical lock usually adopts the key to lock or unlock, when the key is forgotten or damaged, the lock or unlock cannot be carried out, which causes the inconvenience in use; the above two kinds of use problems exist, and the technical scheme of the application is proposed to solve the above problems. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in the prior art. Therefore, one purpose of the utility model is to provide a mechanical electronic dual-purpose anti-theft coded lock, which can solve the above-mentioned use problems, simplify the overall structure and be convenient to use.

[0004] According to the mechanical electronic dual-purpose anti-theft coded lock, the fingerprint detection head is arranged on the handle, the circuit board, the motor and the mechanical lock core are arranged in the shell, the handle is connected with the rotating disc, the fingerprint detection head and the circuit board are connected through the wire, the rotating disc is provided with the rotating shaft, the edge of the rotating disc is provided with the limiting recess, the motor is provided with the push shaft, one end of the push shaft is provided with the sliding piece which can slide on the push shaft, the sliding piece is provided with the plug, the cross-sectional shape of the plug matches the groove shape of the limiting recess, the plug is embedded in the limiting recess to limit the rotation of the rotating disc, the top rod is in contact with the lower end of the sliding piece, when the mechanical lock core rotates, the sliding piece is pushed along the push shaft through the top rod.

[0005] Further, the rotating disc is provided with the socket, and the rotating disc is provided with the wire outlet, one end of the wire passes through the wire outlet and extends to the circuit board.

[0006] Further, the upper end of the sliding piece is provided with the top block, one end of the push shaft passes through the insertion hole of the top block, and a space is left between the top block and the top surface of the sliding piece, the push shaft is further provided with the spring, the spring is on the top surface of the sliding piece, and the spring is located in the space.

[0007] Further, the lower end of the sliding piece is provided with the convex piece, and the convex piece is at the top end of the mechanical lock core.

[0008] Specifically further, one end of the push shaft is provided with a plug pin.

[0009] Specifically further, the sliding piece is provided with an extension block, and the extension block is arranged on the plug block.

[0010] Specifically further, one end of the extension block extends to the outer surface of one side of the plug block.

[0011] Specifically further, the shell is provided with a battery compartment, the battery compartment is located above the shell, and the circuit board is located in front of the battery compartment.

[0012] Specifically further, the rear surface of the shell is provided with a bottom plate, the shell is provided with a waterproof rubber pad, and the shell is further provided with an emergency circuit board.

[0013] Specifically further, the sliding piece is provided with a guide surface, the surface of the guide surface is provided with a positioning gap, and the extension foot of one end of the spring is arranged in the positioning gap.

[0014] Specifically further, the handle and the rotating disc are connected through a connecting shaft, the back surface of the rotating disc is provided with a plug cavity, and the front end of the connecting shaft is arranged in the plug cavity.

[0015] The beneficial effects of the utility model are as follows.

[0016] Firstly, the linkage design of the sliding piece and the limiting recess enables the motor and the mechanical lock core to drive the sliding piece to move upwards respectively, so that the plug block is separated from the limiting recess, the dual backup function of electronic fingerprint unlocking and mechanical key unlocking is realized, the problem of being unable to unlock caused by single mode failure is avoided, and the high reliability of dual-mode unlocking is achieved.

[0017] Secondly, the motor, the mechanical lock core and the sliding piece form a compact linkage structure with the limiting recess of the rotating disc through the push shaft, the number of redundant components is reduced, the assembly complexity is reduced, the overall stability is improved, and the high structural integration is achieved.

[0018] Thirdly, the push shaft of the motor and the top rod of the mechanical lock core adopt a spatial vertical layout (i.e., the distance is greater than or equal to 3 mm), the power transmission paths of the two unlocking modes are independent, mechanical interference is avoided during operation, and physical isolation is prevented.

[0019] Fourthly, the line outlet of the rotating disc is combined with the hollow structure of the connecting shaft, the redundant length of the wire is reserved, the torsion during the rotation of the rotating disc is effectively dispersed, the wire is prevented from being broken due to repeated torsion, the service life is prolonged, and the design optimization of the wire anti-torsion is achieved.

[0020] Fifthly, the emergency circuit board arranged in the shell supports an external Type-C power supply, and is provided with a super capacitor, temporary power can be provided when the power supply of the battery compartment is insufficient, the electronic unlocking function is continuously available, the practicability in an emergency scene is improved, and the emergency power supply compatibility is high.

[0021] Six, the spring of the sliding piece cooperates with the top block, and automatically pushes the plug block to reset to the limiting recess after the unlocking operation, ensures that the limiting function of the rotating disc is quickly recovered, avoids structural jam caused by artificial misoperation and plays a reset mechanism stability effect. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and / or additional aspects and advantages of the present practical new type will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the following drawings.

[0023] Figure 1 is a structural schematic diagram of the present practical new type.

[0024] Figure 2 is another angle structural schematic diagram of the present practical new type. Figure 1

[0025] Figure 3 is an exploded structural schematic diagram of the present practical new type.

[0026] Figure 4 is a structural schematic diagram of the present practical new type in a state of opening the back cover.

[0027] Figure 5 is a sectional structural schematic diagram of the present practical new type.

[0028] Figure 6 is a structural schematic diagram of the present practical new type of motor, sliding piece, mechanical lock core and rotating shaft distribution position.

[0029] Figure 7 is a structural schematic diagram of the present practical new type of rotating shaft, rotating disc and handle connection.

[0030] Figure 8 is a structural schematic diagram of the present practical new type of sliding piece.

[0031] Figure 9 is an exploded structural schematic diagram of the present practical new type of rotating disc and adapter shaft.

[0032] As marked in the drawings: shell 1, handle 2, fingerprint detection head 201, bottom plate 3, battery compartment 4, waterproof rubber pad 5, circuit board 6, rotating disc 7, rotating shaft 701, limiting recess 702, socket 703, wire outlet 704, adapter shaft 705, motor 8, push shaft 801, plug pin 802, mechanical lock core 9, sliding piece 10, plug block 1001, extension block 1002, spring 1003, top block 1004, protruding piece 1005, positioning gap 1006, guide surface 1007, emergency circuit board 11. DETAILED DESCRIPTION

[0033] ​Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used to explain the present application, and cannot be understood as a limitation of the present application.

[0034] Reference will be made to Figures 1 to 9 The mechanical and electronic dual anti-theft coded lock according to the embodiments of the present application is described below, which comprises a shell 1 and a handle 2, the handle 2 is installed on the front surface of the shell 1, the handle 2 is provided with a fingerprint detection head 201, the shell 1 is provided with a circuit board 6, a motor 8 and a mechanical lock core 9, the handle 2 is connected with a rotating disc 7, the fingerprint detection head 201 and the circuit board 6 are connected through wires, the rotating disc 7 is provided with a rotating shaft 701, the edge of the rotating disc 7 is provided with a limiting recess 702, the motor 8 is provided with a push shaft 801, one end of the push shaft 801 is provided with a sliding piece 10 which can slide on the push shaft 801, the sliding piece 10 is provided with an insertion block 1001, the cross-sectional shape of the insertion block 1001 matches the groove shape of the limiting recess 702, the insertion block 1001 is embedded in the limiting recess 702 to limit the rotation of the rotating disc 7, a top rod is in contact with the lower end of the sliding piece 10, when the mechanical lock core 9 rotates, the sliding piece 10 is pushed to move along the push shaft 801 through the top rod.

[0035] The structure realizes the double-mode unlocking function through the mechatronic design, and the core lies in the linkage control mechanism of the sliding piece 10 and the limiting recess 702. When the insertion block 1001 is embedded in the limiting recess 702 of the rotating disc 7, the mechanical interlocking is formed to restrict the rotation freedom of the rotating shaft 7; when the insertion block 1001 is separated from the limiting recess 702, the rotation restriction is removed to enable the handle 2 to drive the door lock execution mechanism. The two unlocking modes realize the displacement of the insertion block through different power paths, and finally converge to the same mechanical decoupling node.

[0036] I. The working principle of the fingerprint recognition electronic unlocking mode is as follows.

[0037] When the user's finger contacts the fingerprint detection head 201 on the surface of the handle 2, the capacitive sensing array (508 dpi) generates a fingerprint grayscale image in real time. The circuit board is electrically connected with the fingerprint detection head, and is used for receiving and processing the fingerprint signal. An optimized fingerprint comparison algorithm (1:N matching time <0.8s) completes the biometric authentication. After the authentication is successful, the circuit board 6 sends a 12V / 200ms pulse driving signal to the motor 8. The motor 8 drives the push shaft 801 to move upward along the vertical guide rail. The stroke control adopts a PID closed-loop algorithm (positioning accuracy ±0.05mm). The sliding part 10 slides on the surface of the push shaft 801 through a polytetrafluoroethylene bushing (friction coefficient μ=0.06), and drives the plug block 1001 to move vertically synchronously. The plug block 1001 is disengaged from the limiting recess 702, and the handle 2 can drive the rotating shaft 7 to rotate by applying a torque of 1.2N·m, and the rotating shaft 7 drives the lock to be opened.

[0038] II. The working principle of the mechanical emergency unlocking mode is as follows.

[0039] A special key is used to pry open the anti-prying cover plate at the bottom of the shell 1, exposing the C-level cross-shaped lock hole (anti-drilling level ANSI Grade 1) of the mechanical lock cylinder 9. The lock cylinder protective sleeve adopts a composite layer structure: an outer layer of 1.2mm hard alloy (HV800) and an inner layer of phosphor bronze bushing.

[0040] After the correct key is inserted, the pin assembly in the mechanical lock cylinder 9 is aligned with the shear line within a tolerance of ±0.02mm, allowing the axial displacement of the movable core of the lock cylinder. The 42CrMo quenched top rod (HRC50) pushes the sliding part 10 with a stroke of 4.2mm. The top pushing surface is designed with an R2mm spherical surface to reduce stress concentration. The sliding part 10 moves upward along the H8 / f7 clearance fit guide groove of the push shaft 801, ensuring physical isolation from the motor driving path. The handle 2 can drive the rotating shaft 7 to rotate by applying a torque of 1.2N·m, and the rotating shaft 7 drives the lock to be opened.

[0041] In addition, the structure is set as follows: the electronic mode is given priority to respond, and the mechanical mode is used as an emergency backup; a physical isolation design is implemented: the spatial vertical distance between the motor push rod and the lock cylinder top rod is ≥3mm, avoiding force transmission interference.

[0042] The structure also has other improvements as follows.

[0043] The rotating disc 7 is provided with a socket 703 which can be matched with the plug shaft of the door lock core, that is, the plug shaft is inserted into the rotating disc 7. In addition, the rotating disc 7 is provided with a wire outlet 704, one end of the wire passes through the wire outlet 704 and the wire extends to the circuit board 6, and the wire is wrapped with a PTFE insulating sleeve, and an anti-wear silica gel layer (thickness ≥0.5mm) is arranged on the inner wall of the channel. The wire outlet 704 can provide sufficient space during the rotation of the connecting shaft 705 and the rotating disc 7, solving the problem that the rotating shaft 7 twists the wire during rotation, causing the wire to twist a certain amount, which easily causes the wire to be twisted and broken. Through the setting of the wire redundancy length (it is recommended to reserve 20%-30% excess) and the rotation stroke of the connecting shaft 705, it is verified through experiments that it can withstand ≥20000 times of 360° rotation test.

[0044] The upper end of the sliding piece 10 is provided with a top block 1004, one end of the push shaft 801 passes through the socket of the top block 1004, and a space is left between the top block 1004 and the top surface of the sliding piece 10. The push shaft 801 is also provided with a spring 1003, the spring 1003 is located on the top surface of the sliding piece 10, and the spring 1003 is located in the space. The spring 1003 can push the sliding piece 10 to reset, so that the plug block 1001 on the sliding piece 10 is repositioned in the limiting recess 702.

[0045] The lower end of the sliding piece 10 is provided with a protruding piece 1005, which is located at the top end of the mechanical lock core 9. The protruding piece 1005 helps the mechanical lock core 9 to push the sliding piece 10 to move upward, so that the plug block 1001 is separated from the limiting recess 702, and the rotating disc 7 can be rotated.

[0046] One end of the push shaft 801 is provided with a plug 802, which prevents the push shaft 801 from being separated from the push shaft 801, and helps the sliding piece 10 to slide on the push shaft 801. In addition, the sliding piece 10 is provided with an extension block 1002, which is inserted into the plug block 1001, so that the plug block 1001 is installed on the extension block 1002. Furthermore, one end of the extension block 1002 extends to the outer surface of one side of the plug block 1001.

[0047] The shell 1 is provided with a battery compartment 4, and the battery compartment 4 is located above the shell 1. The battery compartment 4 is connected with the circuit board 6 through wires, so that the battery compartment 4 supplies power to the circuit board 6. The circuit board 6 is located in front of the battery compartment 4, and the circuit board 6 is connected with the button group on the front surface of the shell 1. The battery compartment 4 can accommodate a battery. In addition, the rear surface of the shell 1 is provided with a bottom plate 3, and the bottom plate 3 is used for being fixed to a door body. The shell 1 is provided with a waterproof rubber pad 5, and the waterproof rubber pad 5 is used for shielding the circuit board 6, a motor 8 and a mechanical lock core 9, so as to play a protection role. The shell 1 is also provided with an emergency circuit board 11, and the emergency circuit board 11 is electrically connected with the circuit board 6. The emergency circuit board 11 plays a role of temporary power supply. The lower end of the emergency circuit board 11 is provided with a USB socket, so as to facilitate the insertion of an external power supply. The external power supply is used for supplying power to the circuit board 6 for operation. The emergency circuit board 11 is integrated with a Type-C PD protocol chip (supporting 5V / 3A input). The USB socket is provided with a waterproof silica gel plug (IP67 protection level). In the emergency mode, the external power supply can preferentially charge a super capacitor (capacity 1F), so as to ensure at least 5 complete unlocking operations.

[0048] For example, the driving motor 8 drives the push shaft 801 to move up and down, drives the sliding piece 10 and the plug block 1001 to move upward together, and the plug block 1001 leaves the limiting recess 702. The handle 2 can twist the rotating disc 7 to open the door lock.

[0049] The sliding piece 10 is provided with a guide surface 1007, and the surface of the guide surface 1007 is provided with a positioning gap 1006. The extension foot of one end of the spring 1003 is arranged in the positioning gap 1006. The guide surface 1007 does not hinder the compression state or the rebound state of the spring 1003, and the gap 1006 can limit the rotation of the spring 1003. In addition, the handle 2 is connected with the rotating disc 7 through the connecting shaft 705. The back surface of the rotating disc 7 is provided with a plug cavity 706, and the front end of the connecting shaft 705 is arranged in the plug cavity 706. The connecting shaft 705 can be separated from the plug cavity 706 of the rotating disc 7, or the connecting shaft 705 can be installed on the plug cavity 706, so as to be convenient for installation and disassembly. The connecting shaft 705 is connected with the handle 2. The fingerprint detection head 201 is embedded on the other end of the connecting shaft 705, so as to fix the position of the fingerprint detection head 201. The connecting shaft 705 is hollow, so that the wires can pass through the connecting shaft 705 and be led out from the wire outlet 704. When the connecting shaft 705 rotates, the wires will not be twisted, so as to avoid the wires being twisted and broken.

[0050] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A mechanical and electronic dual-purpose anti-theft combination lock, comprising a housing (1) and a handle (2), wherein the handle (2) is mounted on the front surface of the housing (1), characterized in that: The handle (2) is equipped with a fingerprint sensor (201), and the housing (1) contains a circuit board (6), a motor (8), and a mechanical lock cylinder (9). The handle (2) is connected to a turntable (7). The fingerprint sensor (201) and the circuit board (6) are connected by a wire. The front surface of the turntable (7) is equipped with a rotating shaft (701), and the edge of the turntable (7) is equipped with a limiting recess (702). The motor (8) is equipped with a push shaft (801), and one end of the push shaft (801) is equipped with a device that can push the shaft (801) to the push shaft (801). 01) The sliding member (10) slides upward. The sliding member (10) is provided with a plug (1001). The cross-sectional shape of the plug (1001) matches the groove shape of the limiting recess (702). When the plug (1001) is embedded in the limiting recess (702), it restricts the rotation of the turntable (7). The top of the mechanical lock core (9) is provided with a push rod. The push rod contacts the lower end of the sliding member (10). When the mechanical lock core (9) rotates, the push rod pushes the sliding member (10) to move along the push shaft (801).

2. The mechanical and electronic dual-purpose anti-theft combination lock according to claim 1, characterized in that: The turntable (7) is provided with a socket (703).

3. The mechanical and electronic dual-purpose anti-theft combination lock according to claim 1, characterized in that: The turntable (7) is provided with a wire outlet (704), one end of which passes through the wire outlet (704) and extends to the circuit board (6).

4. The mechanical and electronic dual-purpose anti-theft combination lock according to claim 1, characterized in that: The upper end of the slider (10) is provided with a top block (1004), one end of the push shaft (801) passes through the insertion hole of the top block (1004), and there is a space between the top block (1004) and the top surface of the slider (10). The push shaft (801) is also provided with a spring (1003), the spring (1003) is abutted against the top surface of the slider (10), and the spring (1003) is located in the space.

5. A mechanical and electronic dual-purpose anti-theft combination lock according to claim 1 or 4, characterized in that: The lower end of the sliding member (10) is provided with a protrusion (1005), and the protrusion (1005) is at the top of the mechanical lock cylinder (9). One end of the push shaft (801) is equipped with a pin (802).

6. The mechanical and electronic dual-purpose anti-theft combination lock according to claim 1, characterized in that: The sliding member (10) is provided with an extension block (1002), which is inserted into the insert block (1001).

7. The mechanical and electronic dual-purpose anti-theft combination lock according to claim 6, characterized in that: One end of the extension block (1002) extends to the outer surface of one side of the insert block (1001).

8. The mechanical and electronic dual-purpose anti-theft combination lock according to claim 1, characterized in that: The housing (1) is provided with a battery compartment (4) located above the housing (1), and a circuit board (6) located in front of the battery compartment (4). The rear surface of the housing (1) is provided with a bottom plate (3). The housing (1) is provided with a waterproof gasket (5). An emergency circuit board (11) is also provided inside the housing (1).

9. The mechanical and electronic dual-purpose anti-theft combination lock according to claim 4, characterized in that: The slider (10) is provided with a guide surface (1007), and the surface of the guide surface (1007) is provided with a positioning gap (1006). The extension foot of one end of the spring (1003) is placed in the positioning gap (1006).

10. The mechanical and electronic dual-purpose anti-theft combination lock according to claim 1, characterized in that: The handle (2) is connected to the turntable (7) via a connecting shaft (705). The back of the turntable (7) is provided with a cavity (706), and the front end of the connecting shaft (705) is placed in the cavity (706).

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