NFC near field power supply unlocking wire lock
Patent Information
- Application Number
- CN202621306618.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-08-21
- Publication Date
- 2026-09-18
- Estimated Expiration
- 2036-08-21
AI Technical Summary
但是，传统钥匙式线锁在使用中存在不少问题：首先，用户需要随身携带钥匙，户外活动时钥匙容易丢失或遗忘，给使用带来极大不便；其次，线锁的锁芯体积较小，防盗性能有限，容易被技术性开启；再次，部分带有电子解锁功能的线锁需要内置电池为电子模块供电，长期使用需要定期充电或更换电池，维护麻烦，且在电池电量耗尽时会出现无法解锁的情况，影响正常使用
[0016] By adopting the above technical solution, when the plug is inserted into the socket, the guide cone surface at the end of the plug first contacts the inner edge of the retaining ring. As the plug continues to be inserted inward, the cone surface of the guide cone gradually pushes the retaining ring downward, allowing the retaining ring to move downward against the elastic force of the retaining spring, thus making way for the plug. When the plug is inserted to the position where the annular groove is aligned with the retaining ring, the retaining ring springs upward into the annular groove under the action of the retaining spring, completing the automatic locking. The design of the guide cone surface enables the plug to automatically push the retaining ring open and achieve automatic locking when inserted, without the need for additional operation, making it convenient to use and reliable in locking. The cone guide surface makes the insertion process smooth and easy, without any jamming or impact, improving the user experience.
Smart Images
Figure CN224769992U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a wire lock, specifically a wire lock that uses NFC near-field power supply for unlocking. Background Technology
[0002] A wire rope lock, also known as a cable lock, is a type of lock that uses a flexible steel wire rope as its locking component. Due to its flexibility and adaptability, it is widely used for securing bicycles, scooters, suitcases, backpacks, and outdoor equipment. Existing wire rope locks typically consist of a lock body and a steel wire rope. One end of the wire rope is fixed to the lock body, while the other end has a plug that can be inserted into the lock body to lock it. Unlocking is usually done by turning a key into the lock cylinder, which actuates the internal locking mechanism, releasing the plug at the end of the wire rope. However, traditional key-operated wire rope locks have several problems: First, users need to carry the key, which is easily lost or forgotten during outdoor activities, causing significant inconvenience. Second, the lock cylinder is small, offering limited anti-theft performance and making it easy to pick using technical means. Third, some wire rope locks with electronic unlocking functions require an internal battery to power the electronic module, necessitating regular charging or battery replacement, making maintenance cumbersome. Furthermore, when the battery is depleted, the lock may become unusable, affecting normal operation.
[0003] In recent years, lock solutions utilizing NFC (Near Field Communication) technology have emerged to achieve battery-free unlocking. These solutions obtain induced current from an external NFC device via an NFC induction coil to drive the internal actuator, eliminating the need for a built-in battery or traditional keys, significantly improving ease of use. However, the output power of NFC is limited by the power limits of transmitters such as mobile phones, resulting in a very limited driving force provided by the induced current. To ensure anti-theft performance, the locking components (such as the retaining ring and bolt) of wire locks typically require significant locking force and pressing pressure. Relying solely on NFC induction power to directly drive these components often leads to insufficient driving force and unreliable unlocking. Conversely, reducing the locking force to accommodate NFC power sacrifices anti-theft performance. Therefore, how to ensure both locking force and anti-theft performance while achieving reliable NFC battery-free unlocking within the constraints of limited NFC power supply power remains a pressing technical challenge in this field. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a wire lock with NFC near-field power supply unlocking.
[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a lock body and a steel wire rope. One end of the steel wire rope is fixed to the lock body, and the other end is provided with a plug. The lock body has a socket for inserting the plug, and the socket extends laterally. A fixing ring and a fixing spring are provided inside the lock body. The fixing spring is located inside the socket and drives the fixing ring to move vertically. An annular groove adapted to the fixing ring is provided on the outer circumference of the plug. A button is also provided inside the lock body. The button is linked with the fixing ring and drives the fixing ring to move vertically against the elastic force of the fixing spring. The lock body is characterized by further including a blocking component, a driving mechanism, and an NFC sensing component. The NFC sensing component is located inside the lock body and electrically connected to the driving mechanism. The driving mechanism is connected to the blocking component and drives the blocking component to move laterally within the lock body. The vertical movement paths of the blocking component and the fixing ring are opposite.
[0006] By adopting the above technical solution, in the locked state, the fixed spring drives the fixed ring to engage in the annular groove of the plug, preventing the plug from being pulled out of the socket. The blocking member is opposite to the vertical movement path of the fixed ring, blocking the vertical movement path of the fixed ring, preventing the fixed ring from moving down and the button from being pressed, thus the entire chain is in a mechanically locked state. When a device such as a mobile phone with NFC function approaches the lock body, the NFC sensing component senses the near-field communication signal and generates an induced current. The drive mechanism is powered by the induced current and drives the blocking member to move laterally, causing the blocking member to move away from the vertical movement path of the fixed ring. At this time, pressing the button drives the fixed ring to move downward against the elastic force of the fixed spring, and the fixed ring exits from the annular groove, allowing the plug to be pulled out of the socket, thus unlocking. After releasing the button, the fixed spring drives the fixed ring to reset upward and re-engage in the annular groove, restoring the locked state. This unlocking method combines NFC near-field power supply with manual operation. NFC inductive power supply only needs to drive the blocking component to move laterally to unlock. The blocking component has a short stroke and low load, requiring far less driving force than directly driving the fixed ring to unlock. This effectively solves the technical problem of limited output power of NFC near-field power supply, which cannot directly drive high-locking-force wire rope locks. This allows NFC unlocking to be applied to anti-theft locks such as wire rope locks that require high locking force. Manual operation, via a button, drives the fixed ring to complete the vertical unlocking action, bearing the main unlocking force. This fully utilizes the high output power of manual operation, ensuring a reliable and powerful unlocking action. NFC power is only responsible for "unlocking authorization," while manual operation is responsible for "unlocking execution." The two have a clear division of labor and work together cleverly. This retains the convenience of NFC's keyless and battery-free features while ensuring sufficient locking force and anti-theft performance, significantly improving the applicability and reliability of NFC unlocking wire locks. The absence of a traditional keyhole structure effectively prevents technical opening and forced entry, providing excellent anti-theft performance.
[0007] The present invention is further configured such that: the driving mechanism includes a motor and a rotating rod, the motor is electrically connected to the NFC sensing component, the rotating rod is arranged laterally and connected to the output shaft of the motor, a radial protrusion is provided on the rotating rod, a blocking member is slidably sleeved on the rotating rod, and a helical spring is also sleeved on the rotating rod, with the end of the radial protrusion extending into the space between adjacent coils of the helical spring.
[0008] By adopting the above technical solution, the induced current generated by the NFC sensing component drives the motor to rotate. The motor directly drives the rotating rod to rotate around its own axis, and the radial protrusion on the rotating rod rotates together with the rotating rod. Since the end of the radial protrusion extends between adjacent coils of the helical spring, the protrusion moves relative to the helical spring along the helical direction during rotation, causing the compression of the helical spring between the protrusion and the blocking member to change. When the rotating rod rotates in the forward direction, the protrusion spirals forward along the helical direction, the compression of the helical spring between the protrusion and the blocking member increases, the axial thrust of the spring on the blocking member increases, pushing the blocking member to move laterally along the rotating rod and extend into the fixed ring, entering the locked position. When the rotating rod rotates in the reverse direction, the protrusion spirals forward along the helical direction. As the direction of rotation reverses, the spring compression decreases, and the blocking component moves laterally in the opposite direction along the rotating rod under the spring's restoring force, exiting from the fixed ring and entering the unlocked position. The use of a helical spring and a radial protrusion to achieve elastic screw transmission converts the motor's rotational motion into the lateral linear movement of the blocking component. This design is simple, ingenious, and has low manufacturing costs. The motor directly drives the rotating rod, eliminating intermediate transmission links, resulting in high transmission efficiency and a compact structure, suitable for the limited internal space of a wire lock body. The spring transmission provides elastic buffering, absorbing impacts and vibrations and preventing damage to parts from rigid collisions. Simultaneously, the helical spring itself serves both transmission and energy storage functions, eliminating the need for an additional reset elastic component, making the overall structure even more compact.
[0009] The present invention is further configured such that: a limiting hole is provided on the side wall of the fixed ring along the transverse direction, the end of the blocking member is opposite to the limiting hole, and the end of the blocking member extends into the limiting hole when the blocking member is in the locked position.
[0010] By adopting the above technical solution, the end of the blocking member and the limiting hole form a plug-in fit. When the blocking member moves laterally and extends into the limiting hole, it passes through the side wall of the fixed ring, blocking the vertical movement of the fixed ring and preventing it from moving vertically. When the blocking member exits from the limiting hole, the vertical movement of the fixed ring is no longer restricted and can be unlocked by pushing it with a button to move vertically. The plug-in fit structure between the limiting hole and the blocking member is simple and reliable. The locking of the fixed ring's vertical movement is achieved through the fit between the hole and the rod. The locking method is direct and effective, and the fit accuracy is easy to guarantee. The end of the blocking member extends into the limiting hole to achieve locking. The locking surface is located in the wall thickness direction of the fixed ring, resulting in uniform force distribution, strong load-bearing capacity, and effective resistance to external impacts and prying, providing good anti-theft performance.
[0011] The present invention is further configured such that the lower end of the button abuts against the upper end surface of the fixing ring, and the upper end of the button extends out of the lock body.
[0012] By adopting the above technical solution, when the user presses the button, the button moves vertically downwards. The lower end of the button abuts against the upper end of the fixing ring and pushes the fixing ring downwards together, causing the fixing ring to exit from the annular groove, thus unlocking the device. After the button is released, the fixing spring drives the fixing ring to return to its original position, and the fixing ring pushes the button upwards back to its initial position. The structure in which the lower end of the button directly abuts against the upper end of the fixing ring is simple and direct, with a short force transmission path and a crisp and clean unlocking action. The upper end of the button extends out of the lock body, making it convenient for the user to press and operate. The operation feel is direct and clear, and no additional transmission or linkage structure is required, reducing the number of parts and potential failure points.
[0013] The present invention is further configured such that: the fixing spring is sleeved on the outer periphery of the fixing ring, one end of the fixing spring abuts against the fixing ring, and the other end abuts against the lock body.
[0014] By adopting the above technical solution, the fixing spring is sleeved on the outer circumference of the fixing ring, providing a continuous upward elastic driving force to the fixing ring, so that the fixing ring always maintains the tendency to move towards the annular groove; when the button pushes the fixing ring downward, the fixing spring is compressed and stores elastic potential energy; when the button is released and the blocking part is removed, the fixing spring releases the elastic potential energy, driving the fixing ring to move upward and lock into the annular groove; the arrangement of the fixing spring sleeved on the outer circumference of the fixing ring is compact, the spring and the fixing ring are coaxially set, the spring force is applied evenly, and there will be no off-center load that would cause the fixing ring to jam; at the same time, the spring sleeved on the outside is easy to assemble and replace, which is beneficial to improving production efficiency and maintenance convenience.
[0015] The present invention is further configured such that: the insertion end of the plug is provided with a guide cone surface, the guide cone surface being opposite to the inner edge of the fixing ring.
[0016] By adopting the above technical solution, when the plug is inserted into the socket, the guide cone surface at the end of the plug first contacts the inner edge of the retaining ring. As the plug continues to be inserted inward, the cone surface of the guide cone gradually pushes the retaining ring downward, allowing the retaining ring to move downward against the elastic force of the retaining spring, thus making way for the plug. When the plug is inserted to the position where the annular groove is aligned with the retaining ring, the retaining ring springs upward into the annular groove under the action of the retaining spring, completing the automatic locking. The design of the guide cone surface enables the plug to automatically push the retaining ring open and achieve automatic locking when inserted, without the need for additional operation, making it convenient to use and reliable in locking. The cone guide surface makes the insertion process smooth and easy, without any jamming or impact, improving the user experience. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the lock body according to this utility model; Figure 3 This is a schematic diagram of the drive mechanism of this utility model; Figure 4 This is a schematic diagram of the steel wire rope of this utility model; Figure 5 This is a schematic diagram of the structure of the fixing ring of this utility model.
[0018] In the diagram: 1. Lock body; 2. Steel wire rope; 21. Plug; 211. Annular groove; 212. Guide cone surface; 3. Socket; 4. Fixing ring; 41. Limiting hole; 5. Fixing spring; 6. Button; 7. Blocking component; 8. Drive mechanism; 81. Motor; 82. Rotating rod; 821. Radial protrusion; 83. Helical spring; 9. NFC sensing component. Detailed Implementation
[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0021] like Figure 1-5As shown, this utility model discloses an NFC near-field power supply unlocking wire lock, including a lock body 1 and a steel wire rope 2. One end of the steel wire rope 2 is fixed to the lock body 1, and the other end is provided with a plug 21. The lock body 1 is provided with a socket 3 for inserting the plug 21, and the socket 3 extends laterally. A fixing ring 4 and a fixing spring 5 are provided inside the lock body 1. The fixing spring 5 is provided in the socket 3 and drives the fixing ring 4 to move vertically. An annular groove 211 adapted to the fixing ring 4 is provided on the outer peripheral surface of the plug 21. A button 6 is also provided inside the lock body 1. The button 6 is linked with the fixing ring 4 and drives the fixing ring 4 to move vertically against the elastic force of the fixing spring 5. A blocking member 7, a driving mechanism 8, and an NFC sensing component 9 are also provided inside the lock body 1. The component 9 is installed inside the lock body 1 and electrically connected to the drive mechanism 8. The drive mechanism 8 is connected to the blocking member 7 and drives the blocking member 7 to move laterally inside the lock body 1. The blocking member 7 is opposite to the vertical movement path of the fixed ring 4. In the locked state, the fixing spring 5 drives the fixed ring 4 to engage in the annular groove 211 of the plug 21, and the plug 21 cannot be pulled out of the socket 3. The blocking member 7 is opposite to the vertical movement path of the fixed ring 4, and the blocking member 7 blocks the vertical movement path of the fixed ring 4, so the fixed ring 4 cannot move down, and the button 6 cannot be pressed. The entire chain is in a mechanically locked state. When a device such as a mobile phone with NFC function approaches the lock body 1, the NFC sensing component 9 senses the near-field communication signal and generates an induced current. The drive mechanism 8 is activated by the sensing component 9. After current is supplied, the blocking component 7 moves laterally, causing it to move away from the vertical movement path of the fixed ring 4. At this time, pressing button 6 causes the fixed ring 4 to move downward against the elastic force of the fixed spring 5, disengaging the fixed ring 4 from the annular groove 211. The plug 21 can then be pulled out of the socket 3, achieving unlocking. After releasing button 6, the fixed spring 5 drives the fixed ring 4 to reset upward and re-engage in the annular groove 211, restoring the locked state. This unlocking method, which combines NFC near-field power supply with manual operation, requires only lateral movement of the blocking component 7 to release the lock. The blocking component 7 has a short stroke and small load, requiring a much smaller driving force than directly driving the fixed ring 4 to complete the unlocking, effectively solving the problem of NFC near-field power supply. The technical challenge of limited electrical output power, which prevents direct driving of high-force wire rope locks, allows NFC unlocking to be applied to anti-theft locks such as wire rope locks requiring high locking force. Human power, via button 6, drives the fixed ring 4 to complete the vertical unlocking action, bearing the main unlocking force. This fully utilizes the high power output of human power, ensuring a reliable and powerful unlocking action. NFC electricity is only responsible for "unlocking authorization," while human power is responsible for "unlocking execution." Their clear division of labor and ingenious cooperation retain the convenience of NFC's keyless and battery-free features while ensuring sufficient locking force and anti-theft performance, significantly improving the applicability and reliability of NFC unlocking wire locks. The absence of a traditional keyhole structure effectively prevents technical unlocking and forced entry, providing excellent anti-theft performance.
[0022] The drive mechanism 8 includes a motor 81 and a rotating rod 82. The motor 81 is electrically connected to the NFC sensing component 9. The rotating rod 82 is arranged laterally and connected to the output shaft of the motor 81. A radial protrusion 821 is provided on the rotating rod 82. A blocking member 7 is slidably sleeved on the rotating rod 82. A helical spring 83 is also sleeved on the rotating rod 82. The end of the radial protrusion 821 extends between adjacent coils of the helical spring 83. The induced current generated by the NFC sensing component 9 drives the motor 81 to rotate. The motor 81 directly drives the rotating rod 82 to rotate around its own axis. The radial protrusion 821 on the rotating rod 82 rotates together with the rotating rod 82. Since the end of the radial protrusion 821 extends between adjacent coils of the helical spring 83, the protrusion moves relative to the helical spring 83 along the helical direction during rotation, causing the compression of the helical spring 83 between the protrusion and the blocking member 7 to change. When the rotating rod 82 rotates forward, the protrusion spirals forward along the helical direction, and the compression of the helical spring 83 between the protrusion and the blocking member 7 changes. As the compression increases, the axial thrust of the spring on the blocking member 7 increases, pushing the blocking member 7 to move laterally along the rotating rod 82 and extend into the fixed ring 4, entering the locked position. When the rotating rod 82 rotates in the opposite direction, the protrusion retracts along the spiral direction, the spring compression decreases, and the blocking member 7 moves laterally in the opposite direction along the rotating rod 82 under the action of the spring's restoring force and exits from the fixed ring 4, entering the unlocked position. The elastic screw drive is achieved by the cooperation of the helical spring 83 and the radial protrusion 821, converting the rotational motion of the motor 81 into the lateral linear movement of the blocking member 7. The structure is simple and ingenious, and the processing cost is low. The motor 81 directly drives the rotating rod 82, eliminating the intermediate transmission link, resulting in high transmission efficiency and a compact structure, which is suitable for the limited internal space of the wire lock body 1. The spring drive has an elastic buffering effect, which can absorb impact and vibration and avoid damage to parts from rigid collisions. At the same time, the helical spring 83 itself has both transmission and energy storage functions, eliminating the need for an additional reset elastic element, making the overall structure more compact.
[0023] A limiting hole 41 is opened laterally on the side wall of the fixed ring 4. The end of the blocking member 7 is opposite to the limiting hole 41. When the blocking member 7 is in the locked position, its end extends into the limiting hole 41, and the end of the blocking member 7 and the limiting hole 41 form a plug-in fit. When the blocking member 7 moves laterally and extends into the limiting hole 41, the blocking member 7 passes through the side wall of the fixed ring 4, and the vertical movement of the fixed ring 4 is blocked by the blocking member 7 and cannot move vertically. When the blocking member 7 is removed from the limiting hole 41, the vertical movement of the fixed ring 4 is no longer restricted and can be pushed by the button 6 to move vertically to unlock. The plug-in fit structure of the limiting hole 41 and the blocking member 7 is simple and reliable. The vertical movement of the fixed ring 4 is locked by the fit between the hole and the rod. The locking method is direct and effective, and the fit accuracy is easy to ensure. The end of the blocking member 7 extends into the limiting hole 41 to lock. The locking surface is located in the wall thickness direction of the fixed ring 4, the force is uniform, the load-bearing capacity is strong, and it can effectively resist external impact and prying, and has good anti-theft performance.
[0024] The lower end of button 6 abuts against the upper end of the fixed ring 4, and the upper end of button 6 extends out of the lock body 1. When the user presses button 6, button 6 moves vertically downward, and the lower end of button 6 abuts against the upper end of the fixed ring 4, pushing the fixed ring 4 downward together, causing the fixed ring 4 to exit from the annular groove 211, thus unlocking. After releasing button 6, the fixed spring 5 drives the fixed ring 4 to return to its original position, and the fixed ring 4 pushes button 6 upward back to its initial position. The structure in which the lower end of button 6 directly abuts against the upper end of the fixed ring 4 is simple and direct, with a short force transmission path and a crisp and clean unlocking action. The upper end of button 6 extends out of the lock body 1, making it convenient for the user to press and operate. The operation feel is direct and clear, without the need for additional transmission or linkage structures, reducing the number of parts and potential failure points.
[0025] A fixing spring 5 is sleeved on the outer circumference of the fixing ring 4. One end of the fixing spring 5 abuts against the fixing ring 4, and the other end abuts against the lock body 1. The fixing spring 5 provides a continuous upward elastic driving force to the fixing ring 4, so that the fixing ring 4 always maintains the tendency to move towards the annular groove 211. When the button 6 pushes the fixing ring 4 downward, the fixing spring 5 is compressed and stores elastic potential energy. When the button 6 is released and the blocking part 7 is disengaged, the fixing spring 5 releases the elastic potential energy, drives the fixing ring 4 to move upward and lock into the annular groove 211. The arrangement of the fixing spring 5 on the outer circumference of the fixing ring 4 is compact. The spring and the fixing ring 4 are coaxially arranged, and the spring force is evenly applied, so that the fixing ring 4 will not be stuck due to uneven load. At the same time, the spring is sleeved on the outside, which facilitates assembly and replacement, and is conducive to improving production efficiency and maintenance convenience.
[0026] The insertion end of the plug 21 is provided with a guide cone surface 212, which is opposite to the inner edge of the fixing ring 4. When the plug 21 is inserted into the socket 3, the guide cone surface 212 at the end of the plug 21 first contacts the inner edge of the fixing ring 4. As the plug 21 continues to be inserted inward, the cone surface of the guide cone surface 212 gradually pushes the fixing ring 4 downward, so that the fixing ring 4 overcomes the elastic force of the fixing spring 5 and moves downward to make way for the plug 21. When the plug 21 is inserted to the position where the annular groove 211 is aligned with the fixing ring 4, the fixing ring 4 springs upward into the annular groove 211 under the action of the fixing spring 5, and completes the automatic locking. The setting of the guide cone surface 212 enables the plug 21 to automatically push the fixing ring 4 open and achieve automatic locking when inserted. Locking can be completed without additional operation, which is convenient to use and reliable in locking. The cone surface guide makes the insertion process smooth and easy, without causing jamming or impact, and improves the user experience.
[0027] Working process: In the locked state, the fixing spring 5 pushes the fixing ring 4 upward, and the fixing ring 4 is engaged in the annular groove 211 of the plug 21, preventing the plug 21 from being pulled out of the socket 3; at the same time, the blocking member 7 is in the locked position, and its end extends into the limiting hole 41 of the fixing ring 4. The blocking member 7 blocks the vertical movement path of the fixing ring 4, preventing the fixing ring 4 from moving downward. Even pressing the button 6 cannot push the fixing ring 4 downward. The button 6, the fixing ring 4, and the blocking member 7 form a complete mechanical lock; when a device such as a mobile phone with NFC function approaches the lock body 1, the NFC sensing component 9 senses the near-field communication signal and generates an induced current, driving the motor of the drive mechanism 8. Motor 81 is powered by induced current and starts to rotate. The output shaft of motor 81 drives the rotating rod 82 to rotate through the meshing of the first gear 841 and the second gear 842. The radial protrusion 821 on the rotating rod 82 rotates together with the rotating rod 82. Since the end of the radial protrusion 821 extends into the adjacent coils of the helical spring 83, the protrusion retracts along the helical direction of the helical spring 83 during rotation. The compression of the helical spring 83 between the radial protrusion 821 and the blocking member 7 decreases. Under the action of the spring restoring force, the blocking member 7 moves laterally along the rotating rod 82 and exits from the limiting hole 41, switching to the unlocked position. The vertical movement path of the fixing ring 4 is cleared. Pressing button 6 causes it to move downwards, pushing the retaining ring 4 downwards against the elastic force of the retaining spring 5. The retaining ring 4 then exits from the annular groove 211, releasing the lock on the plug 21, allowing it to be pulled out of the socket 3, thus unlocking the device. After unplugging the plug 21, releasing button 6 releases the elastic potential energy of the retaining spring 5, pushing the retaining ring 4 upwards to reset it. The retaining ring 4 then pushes button 6 upwards back to its initial position. After the phone is removed, the NFC sensing component 9 loses its sensing current, and the motor 81 rotates in the opposite direction, radially... The protrusion 821 is screwed into the helical spring 83, increasing the compression of the helical spring 83, which pushes the blocking member 7 to move laterally and re-enter the limiting hole 41, restoring the locked position; when locking again, the plug 21 is inserted into the socket 3, and the guide cone surface 212 at the end of the plug 21 contacts the inner edge of the fixing ring 4 and pushes the fixing ring 4 downward, so that the fixing ring 4 moves down against the elastic force of the fixing spring 5; when the annular groove 211 is aligned with the fixing ring 4, the fixing spring 5 drives the fixing ring 4 to spring upward into the annular groove 211, completing the automatic locking.
Claims
1. An NFC near-field power supply unlocking wire lock, comprising a lock body (1) and a steel wire rope (2), one end of the steel wire rope (2) being fixed to the lock body (1), and the other end being provided with a plug (21), the lock body (1) being provided with a socket (3) for inserting the plug (21) and the socket (3) extending laterally, the lock body (1) being provided with a fixing ring (4) and a fixing spring (5), the fixing spring (5) being provided in the socket (3) and driving the fixing ring (4) to move vertically, the outer circumferential surface of the plug (21) being provided with an annular groove (211) adapted to the fixing ring (4), and the lock body (1) also being provided with a button (6), the button (6) being linked with the fixing ring (4) and driving the fixing ring (4) to move vertically against the elastic force of the fixing spring (5), characterized in that: The lock body (1) is also provided with a blocking component (7), a driving mechanism (8) and an NFC sensing component (9). The NFC sensing component (9) is located inside the lock body (1) and is electrically connected to the driving mechanism (8). The driving mechanism (8) is connected to the blocking component (7) and drives the blocking component (7) to move laterally inside the lock body (1). The blocking component (7) is opposite to the vertical movement path of the fixed ring (4).
2. The NFC near-field powered unlocking wire lock according to claim 1, characterized in that: The drive mechanism (8) includes a motor (81) and a rotating rod (82). The motor (81) is electrically connected to the NFC sensing component (9). The rotating rod (82) is arranged laterally and connected to the output shaft of the motor (81). A radial protrusion (821) is provided on the rotating rod (82). A blocking member (7) is slidably sleeved on the rotating rod (82). A helical spring (83) is also sleeved on the rotating rod (82). The end of the radial protrusion (821) extends into the space between adjacent turns of the helical spring (83).
3. The NFC near-field powered unlocking wire lock according to claim 1, characterized in that: The fixed ring (4) has a limiting hole (41) on its side wall along the transverse direction. The end of the blocking member (7) is opposite to the limiting hole (41). When the blocking member (7) is in the locked position, its end extends into the limiting hole (41).
4. The NFC near-field powered unlocking wire lock according to claim 1, characterized in that: The lower end of the button (6) abuts against the upper end of the fixing ring (4), and the upper end of the button (6) extends out of the lock body (1).
5. The NFC powered unlockable wire lock of claim 1, wherein: The fixing spring (5) is sleeved on the outer periphery of the fixing ring (4), with one end of the fixing spring (5) abutting against the fixing ring (4) and the other end abutting against the lock body (1).
6. The NFC powered unlockable wire lock of claim 1, wherein: The insertion end of the plug (21) is provided with a guide cone surface (212), which is opposite to the inner edge of the fixing ring (4).