An intelligent car tire lock

Abstract

The application relates to the technical field of intelligent vehicle security, in particular to an intelligent automobile tire lock, which comprises left and right clamping arms and a main shell, the inner side of the clamping arm is provided with an arc-shaped rubber pressing block with adjustable curvature, automatic clamping is realized through a bidirectional screw rod and a micro servo motor; a main control circuit board is integrated in the main shell, and the main control circuit board is provided with Bluetooth / Wi-Fi communication, GPS positioning and pressure sensing functions; an adaptive supporting foot assembly is arranged at the bottom, an electronic lock tongue mechanism is arranged at the front side, and a mechanical emergency unlocking interface is arranged at the rear side. The application can realize remote control, intelligent identification, multiple verification and state feedback, and improves the locking stability and adaptability.

Description

Technical Field

[0001] This utility model relates to the field of tire lock technology, and in particular to an intelligent car tire lock. Background Technology

[0002] With the development of car anti-theft and smart lock technologies, tire locking devices have gradually evolved from traditional mechanical structures to intelligent, dual-security solutions. However, existing tire lock devices still suffer from problems such as complex operation, insufficient reliability, or limited functionality in practical applications, making it difficult to simultaneously meet the comprehensive needs of convenience, security, and intelligent control.

[0003] A search revealed a vehicle lock device for electric vehicles, with publication number CN105835833B and publication date of December 7, 2018. This device uses a U-shaped lock body and a locking fork to engage the tire between two locking arms, and a chain connecting to a fixed post to lock the tire. While this structure has some practicality in rental scenarios, it relies entirely on mechanical locking, lacks remote control or intelligent recognition functions, and cannot achieve automated locking / unlocking. Furthermore, the U-shaped structure has poor adaptability to tire sizes, requires manual alignment of the lock eye during installation, making the process cumbersome, and is difficult to stably fix on uneven ground or in complex parking environments, posing a risk of being forcibly damaged or having the vehicle moved by bypassing the lock.

[0004] A search revealed a patent application (CN115789061B) for an anti-theft nut and nut assembly for locking automotive tires, published on April 11, 2023. This design achieves anti-theft by incorporating a liftable mounting bracket within the nut body and using a dedicated nut cap to control disassembly. While this design provides tamper protection at the wheel bolt level, it essentially falls under the category of fastener anti-theft and is not a locking device directly acting on the tire as a whole. When the tire is not removed and the vehicle is towed, the nut cannot prevent movement. Furthermore, unlocking relies entirely on a dedicated tool (nut cap), making emergency handling difficult if lost. It also lacks intelligent functions such as status feedback, remote control, or multi-factor authentication, failing to meet the demands of modern intelligent vehicles for proactive security and user interaction.

[0005] The aforementioned problems indicate that existing tire lock technologies are either limited to purely mechanical structures and lack intelligent linkage capabilities, or they only act on local components and cannot effectively prevent the entire vehicle from moving. Therefore, there is an urgent need for a new type of intelligent automotive tire lock that integrates both electronic and mechanical locking, possesses high adaptability and stable clamping capabilities, and supports intelligent interaction, in order to improve vehicle parking safety and user convenience. Utility Model Content

[0006] The purpose of this utility model is to provide an intelligent car tire lock to solve the problems mentioned in the background art, such as existing tire lock devices relying on purely mechanical structures, lacking remote control and intelligent recognition capabilities, poor adaptability to tire size, cumbersome installation and operation, unstable fixation in complex ground environments, inability to effectively prevent the whole vehicle from being towed, and lack of status feedback and multi-identity authentication mechanisms.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an intelligent car tire lock, comprising a left clamping arm and a right clamping arm, wherein the left clamping arm and the right clamping arm are arranged opposite to each other and form an annular clamping space; the inner end face of the left clamping arm is provided with a first arc-shaped rubber pressure block, and the inner end face of the right clamping arm is provided with a second arc-shaped rubber pressure block; the radii of curvature of the first arc-shaped rubber pressure block and the second arc-shaped rubber pressure block are adjustable; a first sliding guide seat is fixedly connected to the outer end of the left clamping arm, and a second sliding guide seat is fixedly connected to the outer end of the right clamping arm. The moving guide rail seat, the first sliding guide rail seat and the second sliding guide rail seat are respectively slidably fitted on the linear guide rails on both sides inside the main housing. The main housing is provided with a bidirectional lead screw. The two ends of the bidirectional lead screw are respectively provided with threaded sections with opposite directions of rotation. The first sliding guide rail seat and the second sliding guide rail seat are respectively sleeved on the corresponding threaded sections of the bidirectional lead screw through threaded holes. One end of the bidirectional lead screw is connected to the output shaft of a micro servo motor. The micro servo motor is fixedly installed on the inner wall of the main housing. The power supply line of the micro servo motor is electrically connected to the main control circuit board.

[0008] Preferably, the top of the main housing is provided with a protective cover plate, which is fixedly connected to the upper edge of the main housing by four countersunk screws. An antenna window is provided in the center of the protective cover plate, and a Bluetooth / Wi-Fi composite antenna module is embedded in the antenna window. The Bluetooth / Wi-Fi composite antenna module is electrically connected to the main control circuit board. The main control circuit board is fixedly installed on the circuit bracket inside the main housing. The main control circuit board integrates a microcontroller, a wireless communication unit, an accelerometer, a GPS positioning module, and a power management chip.

[0009] Preferably, the bottom of both the left and right clamping arms is connected to an adaptive support foot assembly. The adaptive support foot assembly includes a universal ball joint, a telescopic sleeve, and a tapered foot. The upper end of the universal ball joint is hinged to the mounting hole at the bottom of the clamping arm through a ball socket structure. The lower end of the universal ball joint is fixedly connected to the top end of the telescopic sleeve. The bottom end of the telescopic sleeve is threadedly connected to the tapered foot. A compression spring is provided inside the telescopic sleeve. The upper end of the compression spring abuts against the lower end face of the universal ball joint, and the lower end abuts against the top surface of the inner cavity of the tapered foot. The bottom of the tapered foot is covered with a high-friction coefficient silicone pad.

[0010] Preferably, the front side of the main housing is provided with an electronic locking mechanism, which includes an electromagnetic lock core, a locking rod, and a return spring. The electromagnetic lock core is fixedly installed on the inner side of the front wall of the main housing. One end of the locking rod is fixedly connected to the push rod of the electromagnetic lock core, and the other end passes through the through hole in the front wall of the main housing and extends to the outside. The return spring is sleeved on the outside of the locking rod, with one end abutting against the inner wall of the main housing and the other end abutting against the limiting boss on the locking rod. The exposed end of the locking rod is provided with a sloping guide structure, which is inclined towards the ground.

[0011] Preferably, the rear side of the main housing is provided with a mechanical emergency unlocking interface, which includes a hexagonal drive shaft, a clutch gear set, and a manual turntable. The hexagonal drive shaft passes through the rear wall of the main housing and is connected to the input end of the clutch gear set via a spline. The output end of the clutch gear set is connected to the non-motor end of the bidirectional lead screw via an overrunning clutch. The manual turntable is fixedly installed on the exposed end of the hexagonal drive shaft. The overrunning clutch is in the disengaged state when the micro servo motor is working normally, and automatically engages and transmits torque to the bidirectional lead screw when the manual turntable rotates.

[0012] Preferably, both the first and second arc-shaped rubber blocks are equipped with pressure sensor arrays on their backs. The pressure sensor array consists of nine circular thin-film pressure sensors arranged in a 3×3 matrix. Each pressure sensor is electrically connected to the main control circuit board via a flexible ribbon cable. The main control circuit board determines whether the tire is centered and clamped based on the pressure value distribution of each sensor, and controls the micro servo motor to stop running accordingly.

[0013] Preferably, the bottom of the main housing is provided with a removable battery compartment, which is connected to the bottom plate of the main housing via a snap-fit ​​structure. A lithium polymer battery pack is installed in the removable battery compartment, and the lithium polymer battery pack is electrically connected to the main control circuit board via a waterproof connector. The side wall of the main housing is provided with a Type-C charging interface, which is connected to the lithium polymer battery pack via a charging management circuit, which is integrated on the main control circuit board.

[0014] The beneficial effects of this utility model are: automatic clamping is achieved through a bidirectional lead screw and a micro servo motor; the main control circuit board is integrated in the main housing, which has Bluetooth / Wi-Fi communication, GPS positioning and pressure sensing functions; an adaptive support foot assembly is provided at the bottom, an electronic locking tongue mechanism is provided on the front side, and a mechanical emergency unlocking interface is provided on the rear side; this application can realize remote control, intelligent identification, multiple verification and status feedback, and improve locking stability and adaptability. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of an intelligent car tire lock according to the present invention. Figure 2 This is a schematic diagram of the outer structure of the adaptive support foot assembly of this utility model. Figure 3 This is a schematic diagram of the outer structure of the right clamping arm of this utility model. Figure 4 for Figure 1 A magnified diagram of region A.

[0016] The attached diagram is labeled as follows: 1. Left clamping arm; 2. Right clamping arm; 3. First arc-shaped rubber block; 4. Second arc-shaped rubber block; 5. Main housing; 6. First sliding guide rail seat; 7. Second sliding guide rail seat; 8. Bidirectional lead screw; 9. Micro servo motor; 10. Protective cover; 11. Bluetooth / Wi-Fi composite antenna module; 12. Main control circuit board; 13. Adaptive support foot assembly; 131. Universal ball joint; 132. Telescopic sleeve; 133. Conical support foot; 14. Electronic locking tongue mechanism; 15. Mechanical emergency unlocking interface; 16. Pressure sensor array; 17. Removable battery compartment. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] Specific implementation examples are given below.

[0019] This utility model provides a specific embodiment of an intelligent car tire lock, in conjunction with the appendix. Figure 1 To be continued Figure 4 Provide a detailed explanation; such as Figure 1 As shown, the intelligent car tire lock has a symmetrical structure, including a left clamping arm 1 and a right clamping arm 2, which are arranged opposite each other and enclose an annular clamping space for accommodating the tire. A first arc-shaped rubber block 3 is fixedly installed on the inner end face of the left clamping arm 1, and a second arc-shaped rubber block 4 is fixedly installed on the inner end face of the right clamping arm 2. The curvature radii of the first arc-shaped rubber block 3 and the second arc-shaped rubber block 4 can be adjusted by an internal adjustment mechanism to adapt to tire treads of different diameters. The outer end of the left clamping arm 1 is fixedly connected to a first sliding guide rail seat 6 by screws or welding, and the outer end of the right clamping arm 2 is correspondingly fixedly connected to a second sliding guide rail seat 7. The first sliding guide rail seat 6 and the second sliding guide rail seat 7 are slidably fitted on linear guide rails arranged on the left and right sides inside the main housing 5, respectively. The linear guide rails extend along the lateral direction of the main housing 5 to ensure that the left clamping arm 1 and the right clamping arm 2 move synchronously towards or away from each other in the horizontal direction. like Figure 2As shown, a bidirectional lead screw 8 is provided inside the main housing 5. The bidirectional lead screw 8 is arranged along the transverse central axis of the main housing 5, and its two ends are respectively machined with threaded sections with opposite directions of rotation, that is, one end is a left-hand thread and the other end is a right-hand thread. The first sliding guide seat 6 is provided with a threaded hole that matches the left-hand threaded section, and the second sliding guide seat 7 is provided with a threaded hole that matches the right-hand threaded section. When the bidirectional lead screw 8 rotates, the first sliding guide seat 6 and the second sliding guide seat 7 move synchronously in opposite directions, thereby driving the left clamping arm 1 and the right clamping arm 2 to clamp towards each other or to release away from each other. One end of the bidirectional lead screw 8 is connected to the output shaft of the micro servo motor 9 through a coupling or directly. The micro servo motor 9 is fixedly installed on the right end plate of the inner wall of the main housing 5 by bolts. Its power supply line is electrically connected to the main control circuit board 12 through a flexible cable. The main control circuit board 12 is fixedly installed on the circuit bracket inside the main housing 5. The top of the main housing 5 is covered with a protective cover plate 10, which is fixedly connected to the threaded holes along the upper edge of the main housing 5 by four countersunk screws, forming a closed internal cavity. An antenna window is provided in the center of the protective cover plate 10, and a Bluetooth / Wi-Fi composite antenna module 11 is embedded in the antenna window. The Bluetooth / Wi-Fi composite antenna module 11 is electrically connected to the communication interface on the main control circuit board 12 by ribbon cable or soldering. The main control circuit board 12 integrates a microcontroller, a wireless communication unit, an accelerometer, a GPS positioning module, and a power management chip. The modules are connected to each other by printed circuit traces to achieve signal and power connection. The microcontroller, as the core control unit, receives data from various sensors and controls the start, stop, and direction of the micro servo motor 9 according to a preset program. like Figure 1 and Figure 3 As shown, both the left clamping arm 1 and the right clamping arm 2 are equipped with adaptive support foot assemblies 13 at their bottoms. The adaptive support foot assembly 13 includes a universal ball joint 131, a telescopic sleeve 132, and a tapered support foot 133. The upper end of the universal ball joint 131 is hinged to the mounting hole at the bottom of the left clamping arm 1 or the right clamping arm 2 through a ball joint structure, allowing the universal ball joint 131 to swing in any direction. The lower end of the universal ball joint 131 is connected to the top end of the telescopic sleeve 132 by threads or welding. Fixed connection; the telescopic sleeve 132 is a hollow cylindrical structure with an internal thread on its bottom inner wall, which is connected to the external thread at the top of the tapered support 133; the telescopic sleeve 132 is equipped with a compression spring, the upper end of which abuts against the lower end face of the universal ball joint 131, and the lower end abuts against the top surface of the inner cavity of the tapered support 133; the bottom of the tapered support 133 is covered with a high friction coefficient silicone pad, which is fixed to the bottom surface of the tapered support 133 by bonding or molding. like Figure 1 and Figure 2As shown, the front side of the main housing 5 is provided with an electronic locking tongue mechanism 14; the electronic locking tongue mechanism 14 includes an electromagnetic lock core, a locking tongue rod and a return spring; the electromagnetic lock core is fixedly installed on the inner side of the front wall of the main housing 5 by screws, and its push rod extends in the front-back direction; one end of the locking tongue rod is fixed to the push rod of the electromagnetic lock core by a pin or thread, and the other end passes through the through hole opened in the front wall of the main housing 5 and extends to the outside; the return spring is sleeved on the outside of the locking tongue rod, one end of which abuts against the limiting surface of the inner wall of the main housing 5, and the other end abuts against the limiting boss provided on the locking tongue rod; the exposed end of the locking tongue rod is provided with a sloping guide structure, which is inclined towards the ground, so that when the tire lock is placed downwards, the locking tongue rod can be pushed upwards into the main housing 5 by the ground reaction force, and after it is fully in place, it is locked by the electromagnetic lock core being energized; The rear side of the main housing 5 is provided with a mechanical emergency unlocking interface 15; the mechanical emergency unlocking interface 15 includes a hexagonal drive shaft, a clutch gear set and a manual turntable; the hexagonal drive shaft passes through the rear wall of the main housing 5, and its inner end is connected to the input gear of the clutch gear set through a spline; the output gear of the clutch gear set is connected to the non-motor end (i.e., the left end) of the double-acting screw 8 through an overrunning clutch; the manual turntable is fixedly installed on the exposed end of the hexagonal drive shaft, and its outer contour is provided with anti-slip texture; the overrunning clutch is in the disengaged state when the micro servo motor 9 is working normally and does not transmit torque; when the manual turntable is rotated, the overrunning clutch automatically engages, and the torque applied by the manual turntable is reduced by the clutch gear set and transmitted to the double-acting screw 8, thereby driving the left clamping arm 1 and the right clamping arm 2 to release. like Figure 2 As shown, pressure sensor arrays 16 are embedded on the back of both the first arc-shaped rubber block 3 and the second arc-shaped rubber block 4. The pressure sensor array 16 consists of nine circular thin-film pressure sensors arranged in a 3×3 matrix. Each thin-film pressure sensor leads out a signal line through a flexible ribbon cable. All signal lines are combined and connected to the analog input interface on the main control circuit board 12 through a connector. The main control circuit board 12 collects the real-time pressure values ​​of each pressure sensor, calculates the position of the pressure distribution center of gravity, and determines whether the tire is located in the center of the clamping space. If the pressure distribution is asymmetrical, the micro servo motor 9 continues to be driven to fine-tune the clamping position until the pressure distribution meets the preset centering threshold and then the motor stops running. like Figure 1 and Figure 2As shown, the bottom of the main housing 5 is provided with a removable battery compartment 17; the removable battery compartment 17 is connected to the bottom plate of the main housing 5 by a snap-fit ​​structure, which includes elastic hooks on both sides of the removable battery compartment 17 and corresponding slots on the bottom plate of the main housing 5; a lithium polymer battery pack is installed inside the removable battery compartment 17, and the lithium polymer battery pack is electrically connected to the power input terminal on the main control circuit board 12 through a waterproof connector; a Type-C charging interface is provided on the side wall of the main housing 5, and the Type-C charging interface is connected to the charging management circuit integrated on the main control circuit board 12 through internal wires. The charging management circuit performs constant current and constant voltage charging on the lithium polymer battery pack and has overcharge, over-discharge, and short circuit protection functions; In actual use, the user first establishes a wireless communication connection with the main control circuit board 12 via a smartphone APP through the Bluetooth / Wi-Fi composite antenna module 11, and sends an "unlock" command after completing identity verification. The main control circuit board 12 then de-energizes the electromagnetic lock core, and the locking tongue retracts into the main housing 5 under the action of the return spring. The user places the tire lock in front of the target tire and pushes it to fit the tire. At this time, the inclined guide structure of the locking tongue contacts the ground and is pushed upward. After the tire is fully in the clamping space, the locking tongue extends under the action of the electromagnetic lock core and inserts into the preset hole in the ground or achieves initial positioning by relying on its own gravity and friction with the ground. Subsequently, the user sends a "clamp" command through the APP, and the main control circuit board 12 activates. The micro servo motor 9 rotates forward, driving the bidirectional lead screw 8 to rotate, causing the first sliding guide rail 6 and the second sliding guide rail 7 to move towards each other, and the left clamping arm 1 and the right clamping arm 2 to move closer to the tire simultaneously. During this process, the pressure sensor array 16 continuously collects contact pressure data and transmits it to the main control circuit board 12. The main control circuit board 12 dynamically adjusts the running time and force of the micro servo motor 9 according to the pressure value at each point to ensure that the tire is clamped evenly and centered. After clamping is completed, the micro servo motor 9 stops running, the system enters a low-power monitoring state, the acceleration sensor detects whether the equipment has shifted in real time, the GPS positioning module uploads location information periodically, and once abnormal movement is detected, an alarm message is immediately sent to the user's mobile phone through the wireless communication unit. In emergency situations such as power outages or communication failures, the user can use the matching hex wrench to insert into the manual turntable of the mechanical emergency unlocking interface 15, rotate the manual turntable clockwise, drive the hexagonal drive shaft to rotate, and after deceleration by the clutch gear set, drive the double-sided lead screw 8 to reverse through the overrunning clutch, causing the left clamping arm 1 and the right clamping arm 2 to move in opposite directions, thereby releasing the tire; during the placement of the equipment, the adaptive support foot assembly 13, the universal ball joint 131 allows the tapered support foot 133 to automatically adjust its angle according to the ground slope, the compression spring in the telescopic sleeve 132 provides cushioning and keeps the tapered support foot 133 in contact with the ground, and the silicone pad increases friction to prevent slippage; the entire device achieves reliable locking and intelligent monitoring of the tire through the coordinated cooperation of the above mechanical and electronic structures; in order to better enable those skilled in the art to fully understand and implement this utility model, the specific implementation principle of this utility model is further supplemented below with a specific application scenario; When deploying this smart car tire lock in urban shared car parking areas, after the user establishes a communication connection with the device through an authorized mobile terminal, the main control circuit board 12 first controls the electromagnetic lock core in the electronic lock tongue mechanism 14 to de-energize, causing the lock tongue rod to retract into the main housing 5 under the action of the return spring; the operator pushes the whole machine along the tire axis, so that the annular clamping space formed by the left clamping arm 1 and the right clamping arm 2 is fitted around the outer periphery of the tire to be locked; during this process, the inclined guide structure at the front end of the lock tongue rod contacts the ground, and slides upward along the through hole on the front wall of the main housing 5 under the reaction force, compressing the return spring and ensuring that the device slides smoothly into place; when the tire is completely in the clamping area, the main control circuit board 12 re-energizes the electromagnetic lock core, pushes the lock tongue rod to extend and insert into the pre-embedded positioning hole in the ground or relies on its own weight and the rough ground to form an anti-slip constraint, thereby completing the initial anchoring; Subsequently, the main control circuit board 12 receives a "clamping" command from a smartphone APP, driving the micro servo motor 9 to rotate forward, which in turn drives the bidirectional lead screw 8 to rotate. Since the bidirectional lead screw 8 has left-hand threaded sections and right-hand threaded sections at its two ends, the first sliding guide rail 6 and the second sliding guide rail 7 move synchronously towards each other, thereby causing the left clamping arm 1 and the right clamping arm 2 to move closer to the center of the tire. At this time, the pressure sensor array 16 embedded on the back of the first arc-shaped rubber block 3 and the second arc-shaped rubber block 4 begins to collect contact surface pressure data in real time. Column 16 consists of nine circular thin-film pressure sensors arranged in a 3×3 matrix. Each sensor independently outputs an analog signal to the multi-channel analog-to-digital converter interface of the main control circuit board 12. The main control circuit board 12 constructs a two-dimensional pressure distribution map based on the pressure values ​​at each point and calculates its center of gravity coordinates. If the center of gravity deviates from the geometric center of the clamping space by more than a preset threshold, the running angle of the micro servo motor 9 is further fine-tuned until the symmetry of the pressure distribution meets the centering judgment condition, thereby ensuring that the tire is clamped evenly and is in a stable force state, avoiding clamping failure or tire damage due to uneven load. Meanwhile, the adaptive support foot assembly 13 installed at the bottom of the left clamping arm 1 and the right clamping arm 2 works synchronously; the universal ball joint 131 allows the conical foot 133 to swing in any direction through the ball socket structure to adapt to uneven or sloping ground; the compression spring inside the telescopic sleeve 132 provides vertical cushioning, so that the conical foot 133 always keeps in contact with the ground, while the high friction coefficient silicone pad covered on its bottom significantly increases static friction, preventing the whole machine from sliding laterally when the vehicle attempts to tow it; this structure, together with the electronic locking tongue mechanism 14, constitutes a three-point ground support system, effectively improving the overall anti-tipping and anti-drag capability of the device; After clamping is completed, the system automatically switches to low-power monitoring mode; the main control circuit board 12 periodically wakes up the accelerometer to detect whether the device is subjected to abnormal vibration or displacement, while the GPS positioning module periodically obtains the geographical location and uploads it to the cloud server through the Bluetooth / Wi-Fi composite antenna module 11; once the accelerometer detects that the continuous acceleration signal exceeds the set threshold, the main control circuit board 12 immediately activates the wireless communication unit to send real-time alarm information to the user terminal and management platform, including the current location, timestamp and event type, to realize active security linkage; In emergency situations such as battery depletion or wireless communication interruption, maintenance personnel can use the matching hex wrench to insert into the manual turntable of the mechanical emergency unlocking interface 15; rotating the manual turntable clockwise drives the hexagonal drive shaft to rotate, which, after being reduced in speed by the clutch gear set, drives the overrunning clutch to engage, transmitting torque to the non-motor end of the bidirectional lead screw 8; at this time, the overrunning clutch overcomes the static resistance of the micro servo motor 9, forcing the bidirectional lead screw 8 to reverse, causing the first sliding guide seat 6 and the second sliding guide seat 7 to move in opposite directions, and the left clamping arm 1 and the right clamping arm 2 to open synchronously, releasing the tire; this mechanical emergency path is completely independent of the electronic control system, ensuring reliable unlocking capability even under extreme conditions; Throughout the entire process, the synchronous transmission mechanism consisting of the bidirectional lead screw 8 and the linear guide rail ensures the consistency of the movement of the left and right clamping arms, avoiding unilateral force application; the closed-loop feedback mechanism of the pressure sensor array 16 and the main control circuit board 12 realizes adaptive clamping control; the adaptive support foot assembly 13 and the electronic locking tongue mechanism 14 work together to provide multi-dimensional ground constraints; and the mechanical emergency unlocking interface 15 ensures the fault tolerance and maintainability of the system; the above components, through structural coupling and logical linkage, jointly solve the technical defects of existing tire locks in terms of intelligence, adaptability, stability and emergency handling.

[0020] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A smart car tire lock, characterized in that, Includes a left clamping arm (1) and a right clamping arm (2). The left clamping arm (1) and the right clamping arm (2) are arranged opposite to each other and form an annular clamping space. The inner end face of the left clamping arm (1) is provided with a first arc-shaped rubber pressure block (3), and the inner end face of the right clamping arm (2) is provided with a second arc-shaped rubber pressure block (4). The curvature radii of the first arc-shaped rubber pressure block (3) and the second arc-shaped rubber pressure block (4) are adjustable. The outer end of the left clamping arm (1) is fixedly connected to a first sliding guide rail seat (6), and the outer end of the right clamping arm (2) is fixedly connected to a second sliding guide rail seat (7). The first sliding guide rail seat (6) and the second sliding guide rail seat (7) are fixedly connected to each other. The second sliding guide seat (7) is slidably fitted on the linear guide rails on both sides inside the main housing (5); the main housing (5) is provided with a bidirectional lead screw (8), and the two ends of the bidirectional lead screw (8) are respectively provided with threaded sections with opposite directions of rotation. The first sliding guide seat (6) and the second sliding guide seat (7) are respectively fitted onto the corresponding threaded sections of the bidirectional lead screw (8) through threaded holes; one end of the bidirectional lead screw (8) is connected to the output shaft of a micro servo motor (9), the micro servo motor (9) is fixedly installed on the inner wall of the main housing (5), and the power supply line of the micro servo motor (9) is electrically connected to the main control circuit board (12).

2. The intelligent car tire lock according to claim 1, characterized in that: The top of the main housing (5) is provided with a protective cover plate (10), which is fixedly connected to the upper edge of the main housing (5) by four countersunk screws; an antenna window is provided in the center of the protective cover plate (10), and a Bluetooth / Wi-Fi composite antenna module (11) is embedded in the antenna window. The Bluetooth / Wi-Fi composite antenna module (11) is electrically connected to the main control circuit board (12); the main control circuit board (12) is fixedly installed on the circuit bracket inside the main housing (5), and the main control circuit board (12) integrates a microcontroller, a wireless communication unit, an accelerometer, a GPS positioning module and a power management chip.

3. The intelligent car tire lock according to claim 1, characterized in that: The bottom of the left clamping arm (1) and the right clamping arm (2) are both connected to an adaptive support foot assembly (13). The adaptive support foot assembly (13) includes a universal ball joint (131), a telescopic sleeve (132), and a conical foot (133). The upper end of the universal ball joint (131) is hinged to the mounting hole at the bottom of the clamping arm through a ball socket structure. The lower end of the universal ball joint (131) is fixedly connected to the top end of the telescopic sleeve (132). The bottom end of the telescopic sleeve (132) is threadedly connected to the conical foot (133). The telescopic sleeve (132) is provided with a compression spring inside. The upper end of the compression spring abuts against the lower end face of the universal ball joint (131), and the lower end abuts against the top surface of the inner cavity of the conical foot (133). The bottom of the conical foot (133) is covered with a silicone pad.

4. The intelligent car tire lock according to claim 1, characterized in that: The front side of the main housing (5) is provided with an electronic locking tongue mechanism (14). The electronic locking tongue mechanism (14) includes an electromagnetic lock core, a locking tongue rod and a return spring. The electromagnetic lock core is fixedly installed on the inner side of the front wall of the main housing (5). One end of the locking tongue rod is fixedly connected to the push rod of the electromagnetic lock core, and the other end passes through the through hole of the front wall of the main housing (5) and extends to the outside. The return spring is sleeved on the outside of the locking tongue rod, with one end abutting against the inner wall of the main housing (5) and the other end abutting against the limiting boss on the locking tongue rod. The exposed end of the locking tongue rod is provided with a sloping guide structure, which is inclined towards the ground.

5. The intelligent car tire lock according to claim 1, characterized in that: The rear side of the main housing (5) is provided with a mechanical emergency unlocking interface (15). The mechanical emergency unlocking interface (15) includes a hexagonal drive shaft, a clutch gear set and a manual turntable. The hexagonal drive shaft passes through the rear wall of the main housing (5) and is connected to the input end of the clutch gear set via a spline. The output end of the clutch gear set is connected to the non-motor end of the bidirectional lead screw (8) via an overrunning clutch. The manual turntable is fixedly installed on the exposed end of the hexagonal drive shaft. The overrunning clutch is in the disengaged state when the micro servo motor (9) is working normally, and automatically engages and transmits torque to the bidirectional lead screw (8) when the manual turntable rotates.

6. The intelligent car tire lock according to claim 1, characterized in that: The back of the first arc-shaped rubber block (3) and the second arc-shaped rubber block (4) are provided with pressure sensor arrays (16). The pressure sensor array (16) consists of nine circular thin-film pressure sensors arranged in a 3×3 matrix. Each pressure sensor is electrically connected to the main control circuit board (12) through a flexible ribbon cable.

7. The intelligent car tire lock according to claim 1, characterized in that: The bottom of the main housing (5) is provided with a detachable battery compartment (17), which is connected to the bottom plate of the main housing (5) by a snap-fit ​​structure. A lithium polymer battery pack is installed in the detachable battery compartment (17), and the lithium polymer battery pack is electrically connected to the main control circuit board (12) through a waterproof connector.

8. The intelligent car tire lock according to claim 7, characterized in that: The side wall of the main housing (5) is provided with a Type-C charging interface. The Type-C charging interface is connected to the lithium polymer battery pack through a charging management circuit, which is integrated on the main control circuit board (12).

9. A smart car tire lock according to claim 3, characterized in that: The silicone pad is fixed to the bottom surface of the conical support (133) by bonding or molding.

10. A smart car tire lock according to claim 6, characterized in that: The main control circuit board (12) determines whether the tire is centered and clamped according to the pressure value distribution of each sensor in the pressure sensor array (16), and controls the micro servo motor (9) to stop running accordingly.

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