Passive electronic lock system and unlocking method thereof

Abstract

The invention discloses a passive electronic lock system which comprises a passive lock and a watchband key matched with the passive lock. A first electrode and a second electrode which are coaxial are arranged on the passive lock at an interval, the first electrode is arranged at the central position of the second electrode, and the second electrode is annular and surrounds the first electrode; a driving motor and a spring bolt are further arranged in the passive lock, a lock hole is further formed in the passive lock, the driving motor is electrically connected with the first electrode and the second electrode, and the spring bolt is movably connected with the lock hole; a power supply is arranged in the watchband key, a plurality of electrode probes are arranged on a dial plate of the watchband key, and the electrode probes are electrically connected with the power supply; during unlocking, the watchband key is attached to the passive lock, the electrode probe is electrically connected with the first electrode and the second electrode and used for transmitting electric energy of the power source to the driving motor, and after the driving motor is started, the spring bolt is indirectly driven to be separated from the lock hole, the passive lock is rotated, and unlocking is completed.

Description

Technical Field

[0001] This invention relates to the field of electronic equipment technology, specifically a passive electronic lock system and its unlocking method. Background Technology

[0002] Traditional mechanical locks require a mechanical key to be aligned with the lock's keyhole before the key can be inserted to unlock the lock.

[0003] This operation, which requires strict alignment before unlocking, makes it difficult for users to align the two parts in dimly lit environments. The alignment process is also time-consuming and laborious, severely reducing the convenience of unlocking and failing to meet users' needs for quick unlocking.

[0004] Therefore, designing an electronic lock system and method that can be easily unlocked has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and to provide a passive electronic lock system and its unlocking method.

[0006] The objective of this invention is mainly achieved through the following technical solutions: This invention provides a passive electronic lock system, comprising: Passive locks, and watch strap keys compatible with passive locks; The passive lock has a first electrode and a second electrode arranged on the same axis at intervals. The first electrode is located at the center of the second electrode, and the second electrode is in the shape of a ring, surrounding and enclosing the first electrode. The passive lock is also equipped with a drive motor and a lock tongue. The passive lock is also provided with a lock hole. The drive motor is electrically connected to the first electrode and the second electrode respectively, and the lock tongue is movably connected to the lock hole. The watch strap key contains a power source, and the dial of the watch strap key has several electrode probes that are electrically connected to the power source. When unlocking, the watch strap key is placed against the passive lock, and the electrode probes are electrically connected to the first and second electrodes respectively to transmit electrical energy from the power supply to the drive motor. After the drive motor starts, it indirectly drives the bolt to disengage from the lock hole, and the passive lock is rotated to complete the unlocking.

[0007] Furthermore, the passive lock is also provided with a ring-shaped third electrode, which is coaxially disposed between the first electrode and the second electrode and surrounds the first electrode. The third electrode is electrically connected to the drive motor.

[0008] Furthermore, the passive lock also has a main control panel, on which the bottoms of the first, second, and third electrodes are all located. The first, second, and third electrodes are electrically connected to the drive motor through the main control panel.

[0009] Furthermore, the watch case of the watch key has a main control board that is electrically connected to the power supply. The main control board has a Bluetooth module. The top of the watch face of the watch key has a recessed groove to accommodate the electrode probe. One end of the electrode probe extends into the watch case and is electrically connected to the main control board, while the other end is exposed in the groove.

[0010] Furthermore, the watch face with the key strap is equipped with several buttons, and the watch face is electrically connected to the main control board.

[0011] Furthermore, a sliding cap is slidably connected inside the passive lock, and an eccentric column is provided at the output end of the drive motor. A first groove is provided on the side of the sliding cap near the eccentric column, the eccentric column abuts against the inner wall of the first groove, and the sliding cap is fixedly connected to the lock tongue. A first spring is also provided between the sliding cap and the passive lock. The first spring is located above the lock tongue, and the central axis of the first spring coincides with or is parallel to the central axis of the lock tongue. One end of the first spring abuts against the passive lock, and the other end abuts against the sliding cap.

[0012] Furthermore, a locking pin is provided between the passive lock and the sliding cap. The locking pin is slidably connected to the passive lock. A second spring is provided between the locking pin and the passive lock. The central axis of the second spring is perpendicular to the central axis of the lock tongue. A second groove is provided on the side of the sliding cap near the locking pin. One end of the second spring is connected to the passive lock, and the other end abuts against one end of the locking pin. The other end of the locking pin is movably connected to the second groove.

[0013] Furthermore, a first guide block is provided on the top of the locking pin, and a push button is also provided on the passive lock. A second guide block is provided on the push button, and the first guide block and the second guide block abut against each other.

[0014] A method for unlocking a passive electronic lock system, the method comprising the following steps: The watch strap key is attached to the passive lock so that the electrode probes contact the first electrode and the second electrode respectively; The power supply delivers electrical energy to the drive motor of the passive lock through the electrode probe, the first electrode, and the second electrode; After the drive motor starts, it indirectly causes the bolt to disengage from the lock hole; After the bolt is completely disengaged from the keyhole, turn the passive lock to unlock.

[0015] A method for unlocking a passive electronic lock system, the method further comprising the following steps: Establish a Bluetooth connection between your mobile phone and the Bluetooth module on the main control board inside the watch strap key. The watch strap key is attached to the passive lock so that the electrode probes contact the first electrode, the second electrode and the third electrode respectively; The mobile phone transmits the password to the main control panel of the passive lock via the main control board for password verification; If the verification is successful, the power supply will transmit electrical energy to the main control panel of the passive lock through the main control board, electrode probe, first electrode, second electrode and third electrode, and the main control panel will control the drive motor to start. After the drive motor starts, it indirectly causes the bolt to disengage from the lock hole; After the bolt is completely disengaged from the keyhole, turn the passive lock to unlock.

[0016] A method for unlocking a passive electronic lock system, the method further comprising the following steps: Click the button on the watch face with the key on the strap to enter the password; The watch strap key is attached to the passive lock so that the electrode probes contact the first electrode, the second electrode and the third electrode respectively; The main control board of the watch strap key transmits the password to the main control panel of the passive lock for password verification; If the verification is successful, the power supply will deliver electrical energy to the main control panel of the passive lock through the electrode probe, the first electrode, the second electrode and the third electrode, and the main control panel will control the drive motor to start. After the drive motor starts, it indirectly causes the bolt to disengage from the lock hole; After the bolt is completely disengaged from the keyhole, turn the passive lock to unlock.

[0017] In summary, the present invention has the following advantages compared with the prior art: In this design, by placing the first electrode at the center of the second electrode, with the second electrode arranged in a ring around the first electrode, the electrode probe can maintain stable contact with both the first and second electrodes at any angle within 360° when the passive lock is in contact with the watchband key. Effective conductivity between the first electrode, the second electrode, and the electrode probe is achieved without requiring precise alignment between the watchband key and the passive lock. The first and second electrodes then transmit current to the drive motor, which starts and indirectly disengages the bolt from the keyhole. Rotating the handle then unlocks the lock. This passive lock and watchband key effectively solve the problem of traditional mechanical keys and locks requiring strict alignment for unlocking, which is time-consuming and laborious in low-light conditions. It greatly improves the convenience of unlocking and meets the user's practical need for quick unlocking. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 A schematic diagram of the passive lock provided in this application; Figure 2 A structural diagram of the passive lock provided in this application when the bolt and keyhole are separated; Figure 3 A structural diagram showing the connection between the bolt and the keyhole of the passive lock provided in this application; Figure 4 This is a first exploded view of the main control panel provided in this application; Figure 5 This is a second exploded view of the main control panel provided in this application; Figure 6 A schematic diagram of the watch strap key provided for this application; Figure 7 Exploded view of the watch strap key provided in this application; Figure 8 A cross-sectional view of the watch strap key and the passive lock connected as provided in this application.

[0019] Figure Labels

[0020] 1- Passive lock; 2- Watch strap key; 3- First electrode; 4- Second electrode; 5- Third electrode; 6- Drive motor; 7- Lock tongue; 8- Lock hole; 9- Power supply; 10- Electrode probe; 11- Main control panel; 12- Main control board; 13- Bluetooth module; 14- Circular groove; 15- Protrusion; 16- Button; 17- Sliding cap; 18- Eccentric column; 19- First groove; 20- First spring; 21- Locking pin; 22- Second spring; 23- Second groove; 24- First guide wedge; 25- Press button; 26- Second guide wedge; 27- First magnetic ring; 28- Second magnetic ring; 29- PCB board. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of the present invention.

[0027] In the following description, suffixes such as "module," "part," "component," or "unit" are used only for the purpose of illustrative purposes and have no specific meaning in themselves. Therefore, they can be used interchangeably.

[0028] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0029] According to one embodiment of the present invention, please refer to the following: Figures 1-8 A passive electronic lock system, comprising: Passive lock 1, and watch strap key 2 adapted to passive lock 1; The passive lock 1 is provided with a coaxial first electrode 3 and a second electrode 4 at intervals. The first electrode 3 is located at the center of the second electrode 4, and the second electrode 4 is in the shape of a ring, surrounding and enclosing the first electrode 3. The passive lock 1 is also equipped with a drive motor 6 and a lock tongue 7. The passive lock 1 is also provided with a lock hole 8. The drive motor 6 is electrically connected to the first electrode 3 and the second electrode 4 respectively, and the lock tongue 7 is movably connected to the lock hole 8. The watch strap key 2 is equipped with a power supply 9, and the dial of the watch strap key 2 is equipped with several electrode probes 10, which are electrically connected to the power supply 9. When unlocking, the watch strap key 2 is attached to the passive lock 1, and the electrode probe 10 is electrically connected to the first electrode 3 and the second electrode 4 respectively, so as to transmit the power energy of the power supply 9 to the drive motor 6. After the drive motor 6 starts, it indirectly drives the lock tongue 7 to disengage from the lock hole 8, and rotates the passive lock 1 to complete the unlocking.

[0030] In this embodiment, when the watch strap key 2 has three electrode probes 10, the user places the watch strap key 2 on the passive lock 1, causing the three electrode probes 10 on the watch strap key 2 to contact the first electrode 3 and the second electrode 4 on the passive lock 1, respectively. The first electrode 3, located in the center, contacts the middle probe of the three electrode probes 10, while the ring-shaped second electrode 4 contacts the two outer probes of the three electrode probes 10. With the two electrodes in contact, the electrical energy from the power supply 9 is transmitted to the drive motor 6 through the electrode probes 10, the first electrode 3, and the second electrode 4. After the drive motor 6 starts, it indirectly drives the bolt 7 to move until the bolt 7 disengages from the keyhole 8. At this point, the user can complete the unlocking operation by rotating the passive lock 1. The entire process does not require the user to deliberately align the electrode positions, effectively improving the convenience of unlocking.

[0031] It should be noted that the passive lock 1 in this embodiment is equivalent to a conventional ball handle or grip handle. The method of unlocking by rotating the passive lock 1 is consistent with the principle of the rotation unlocking method of a conventional ball handle or grip handle. The mechanical transmission components involved in this rotation unlocking process are all existing conventional technical components, which will not be described in detail here.

[0032] In one possible implementation, the passive lock 1 is further provided with an annular third electrode 5, which is coaxially disposed between the first electrode 3 and the second electrode 4 and surrounds the first electrode 3. The third electrode 5 is electrically connected to the drive motor 6.

[0033] When this embodiment is implemented, as follows: Figure 6 and Figure 8 As shown, when the watchband key 2 has five electrode probes 10, the user can place the watchband key 2 on the surface of the passive lock 1, so that the five electrode probes 10 on the watchband key 2 contact the first electrode 3, the second electrode 4, and the third electrode 5 on the passive lock 1, respectively. The ring-shaped second electrode 4 will contact the two outermost probes of the five electrode probes 10, the third electrode 5 located between the first electrode 3 and the second electrode 4 will contact the two innermost probes of the five electrode probes 10, and the first electrode 3 located in the center will contact the middle probe of the five electrode probes 10. This design ensures that the first electrode 3, the second electrode 4, and the third electrode 5 can maintain a stable contact with the corresponding electrode probes 10 regardless of the watchband key 2 being at any angle within a 360-degree range. At this time, the electrical energy of the power supply 9 can be transmitted to the drive motor 6 through each electrode. After the drive motor 6 starts, it drives the bolt 7 to disengage from the lock hole 8, and the user can unlock the passive lock 1 by rotating it. This design further adapts to watchband keys 2 with different numbers of electrode probes 10, improving the adaptability of this device.

[0034] In one possible implementation, the first electrode 3 is a cylindrical electrode or a ring electrode.

[0035] In this embodiment, the first electrode 3 is made of copper, a material with excellent conductivity, which enables rapid conduction of electrical energy, reduces energy loss during transmission, and improves transmission efficiency. When the number of electrode probes 10 on the watchband key 2 is odd, the first electrode 3 is a cylindrical electrode, used to form good contact with the central electrode probe 10. When the number of electrode probes 10 is even, the first electrode 3 is a ring electrode, used to contact the two central probes among the even number of electrode probes 10 for electrical energy transmission.

[0036] In one possible implementation, the passive lock 1 is further provided with a main control panel 11, and the bottoms of the first electrode 3, the second electrode 4 and the third electrode 5 are all disposed on the main control panel 11. The first electrode 3, the second electrode 4 and the third electrode 5 are electrically connected to the drive motor 6 through the main control panel 11.

[0037] In this embodiment, as Figure 4 As shown, the main control panel 11 provides a stable mounting carrier for the first electrode 3, the second electrode 4, and the third electrode 5, enabling precise welding of each electrode onto the main control panel 11 and preventing misalignment. Simultaneously, each electrode establishes a stable circuit connection with the drive motor 6 through the main control panel 11, allowing electrical energy to be transmitted to the drive motor 6 via the lines on the main control panel 11, ensuring stable startup of the drive motor 6 and improving the reliability of the unlocking process.

[0038] In this embodiment, as Figure 5 As shown, in order to make the first electrode 3, the second electrode 4 and the third electrode 5 more securely installed on the main control panel 11, a PCB board 29 can be set on the top of the main control panel 11. The PCB board 29 has corresponding openings for the pins of the three electrodes to pass through. The pins of the three electrodes pass through the openings of the PCB board 29 and are then soldered to the main control panel 11. This design makes the installation position of each electrode pin more precise, further restricts the shaking and displacement of each electrode, ensures that the first electrode 3, the second electrode 4 and the third electrode 5 always maintain good coaxiality, and enhances the firmness of the connection between each electrode and the main control panel 11, thus extending the service life of the passive lock 1.

[0039] In one possible implementation, the watch key 2 has a main control board 12 that is electrically connected to the power supply 9 inside its case. The main control board 12 has a Bluetooth module 13. The top of the watch face of the watch key 2 is partially recessed to form a circular groove 14 for accommodating the electrode probe 10. One end of the electrode probe 10 extends into the case and is electrically connected to the main control board 12, while the other end is exposed in the circular groove 14.

[0040] When this embodiment is implemented, as follows: Figure 1As shown, the passive lock 1 has a protrusion 15 at its top center. The top of the protrusion 15 has an annular groove for accommodating the second electrode 3 and the third electrode 4, and a through hole for accommodating the first electrode 2. When the first electrode 2 is fitted into the through hole, and the second electrode 3 and the third electrode 4 are fitted into the annular groove, the top surfaces of the first electrode 2, the second electrode 3, and the third electrode 4 are flush with the top surface of the protrusion 15. The top size and shape of the protrusion 15 on the passive lock 1 are adapted to the circular groove 14. When the user places the watch strap key 2 against the passive lock 1, the protrusion 15 will embed into the circular groove 14. The electrode probe 10 exposed in the circular groove 14 will then make close contact with the first electrode 3, the second electrode 4, and the third electrode 5 on the protrusion 15. This structural design allows the electrode probe 10 to form a comprehensive and tight contact with each electrode, effectively avoiding situations where the drive motor 6 cannot start or the unlocking fails due to insufficient contact gaps or contact area, ensuring a stable and smooth unlocking process.

[0041] In this embodiment, the user can first establish a Bluetooth connection between their mobile phone and the Bluetooth module 13 on the main control board 12 inside the watchband key 2. After successful connection, the user enters a preset unlocking password on their mobile phone, which is transmitted to the main control board 12 of the watchband key 2 via Bluetooth. The user then places the watchband key 2 against the passive lock 1, so that the protrusion 15 is embedded in the circular groove 14, ensuring stable contact between the electrode probe 10 and the first electrode 3, second electrode 4, and third electrode 5 on the protrusion 15. At this time, the main control board 12 transmits the received password to the main control panel 11 of the passive lock 1 through the electrode probe 10 and the first electrode 3, second electrode 4, and third electrode 5, and the main control panel 11 completes the password verification. If the password verification is successful, the power supply 9 inside the watchband key 2 supplies power to the main control panel 11 through the electrode probe 10 and each electrode on the main control board 12. After receiving the power, the main control panel 11 controls the drive motor 6 to start. After the drive motor 6 starts, it indirectly drives the bolt 7 to move away from the lock hole 8. At this time, the user can unlock the passive lock 1 by rotating it. This unlocking method, which combines mobile phone Bluetooth, retains the convenience of not needing to precisely align the electrodes, while increasing the security of unlocking through password verification. At the same time, by leveraging the signal transmission between the main control board 12 and the main control panel 11, it achieves the coordinated cooperation of password verification and power transmission, ensuring a stable and reliable unlocking process.

[0042] In one possible implementation, the dial of the watch strap key 2 is provided with several buttons 16, and the dial is electrically connected to the main control board 12.

[0043] In this embodiment, the watch face can be a touch-screen watch face or a mechanical watch face. When the watch face is a touch-screen watch face, button 16 is a touch button; when the watch face is a mechanical watch face, button 16 is a mechanical button. If button 16 is a touch button, the user can wear the watch strap key 2 while showering, swimming, and diving without having to remove it while wading, saving storage trouble and further reducing the probability of losing the watch strap key 2.

[0044] In this embodiment, the user can input a password by clicking button 16 on the dial. The input password is transmitted to the main control board 12 inside the watch strap key 2 for storage. When the watch strap key 2 is subsequently placed against the passive lock 1 to unlock it, the main control board 12 sends the stored password to the main control panel 11 of the passive lock 1 for verification. Only after the password verification is successful can subsequent power transmission and unlocking actions be completed, effectively improving the security of the passive electronic lock system and preventing unauthorized personnel from unlocking it.

[0045] In one possible implementation, a sliding cap 17 is slidably connected inside the passive lock 1, an eccentric column 18 is provided at the output end of the drive motor 6, a first groove 19 is provided on the side of the sliding cap 17 near the eccentric column 18, the eccentric column 18 abuts against the inner wall of the first groove 19, and the sliding cap 17 is fixedly connected to the lock tongue 7. A first spring 20 is also provided between the sliding cap 17 and the passive lock 1. The first spring 20 is located above the lock tongue 7, and the central axis of the first spring 20 coincides with or is parallel to the central axis of the lock tongue 7. One end of the first spring 20 abuts against the passive lock 1, and the other end abuts against the sliding cap 17.

[0046] When this embodiment is implemented, as follows: Figure 2 As shown, when electrical energy is transmitted to the drive motor 6, the drive motor 6 starts and drives the eccentric column 18 to rotate. During rotation, the eccentric column 18 continuously abuts against the inner wall of the first groove 19. As the eccentric column 18 rotates, it pushes the sliding cap 17 to slide upward along the interior of the passive lock 1. During the sliding process, the sliding cap 17 drives the bolt 7 to move synchronously until the bolt 7 is completely disengaged from the lock hole 8. At the same time, the sliding cap 17 exerts a compressive force on the first spring 20, putting the first spring 20 into a compressed state. This structure, through the cooperation of the eccentric column 18 and the first groove 19, converts the rotational motion of the drive motor 6 into the linear motion of the sliding cap 17, achieving precise displacement of the bolt 7 and ensuring the smooth completion of the unlocking action.

[0047] In one possible implementation, a locking pin 21 is provided between the passive lock 1 and the sliding cap 17. The locking pin 21 is slidably connected to the passive lock 1. A second spring 22 is provided between the locking pin 21 and the passive lock 1. The central axis of the second spring 22 is perpendicular to the central axis of the latch 7. A second groove 23 is provided on the side of the sliding cap 17 near the locking pin 21. One end of the second spring 22 is connected to the passive lock 1, and the other end abuts against one end of the locking pin 21. The other end of the locking pin 21 is movably connected to the second groove 23.

[0048] When this embodiment is implemented, as follows: Figure 2 As shown, when the sliding cap 17 moves the bolt 7 to the preset position, the locking pin 21 slides along the inside of the passive lock 1 under the elastic force of the second spring 22. The end of the locking pin 21 gradually inserts into the second groove 23 on the sliding cap 17, thus restricting the sliding cap 17 from moving further. At this time, the bolt 7 can be stably kept in the state of being disengaged from the lock hole 8, preventing the sliding cap 17 from falling back due to the elastic force of the first spring 20 after the drive motor 6 is de-energized, ensuring that the user has sufficient time to rotate the passive lock 1 to complete the unlocking. This structure further improves the stability and reliability of the unlocking process, preventing unlocking failure caused by the bolt 7 resetting.

[0049] In one possible implementation, a first guide ramp 24 is provided on the top of the latch 21, and a push button 25 is also provided on the passive lock 1. A second guide ramp 26 is provided on the push button 25, and the first guide ramp 24 and the second guide ramp 26 abut against each other.

[0050] When this embodiment is implemented, as follows: Figure 2 and Figure 3 As shown, during the process of inserting the end of the locking pin 21 into the second groove 23 on the sliding cap 17, the first guide block 24 will press the second guide block 26, pushing the second guide block 26 and the pressing button 25 upward. When the user needs to lock, first rotate the passive lock 1 to the initial position so that the bolt 7 corresponds to the position of the lock hole 8. Then press the pressing button 25, which will drive the second guide block 26 to move synchronously. During the movement, the second guide block 26 will abut against the first guide block 24 and generate a squeezing force. Under the action of the squeezing force, the first guide block 24 will drive the locking pin 21 to slide along the inside of the passive lock 1 until the locking pin 21 is completely disengaged from the second groove 23. At this time, the limiting state of the sliding cap 17 is released, and the first spring 20 will push the sliding cap 17 downward under its own elastic force. During the sliding of the sliding cap 17, the bolt 7 will move synchronously until the bolt 7 is fully inserted into the lock hole 8, completing the entire locking operation. This structure enables the quick reset of the locking pin 21 through the cooperation of the guide block, making the locking action more convenient and efficient.

[0051] In one possible implementation, such as Figure 8As shown, a first magnetic ring 27 is provided inside the passive lock 1, and a second magnetic ring 28 is provided inside the watch case of the watch strap key 2.

[0052] In this embodiment, when the watch strap key 2 is placed on the passive lock 1, the first magnetic ring 27 inside the passive lock 1 will generate a magnetic attraction force with the second magnetic ring 28 inside the watch strap key 2. This magnetic attraction force can firmly attract the watch strap key 2 to the passive lock 1, preventing the watch strap key 2 from slipping or shifting during the unlocking process, and ensuring the contact stability between the electrode probe 10 and the first electrode 3, the second electrode 4, and the third electrode 5. This ensures that electrical energy can be continuously and stably transmitted to the drive motor 6, and the drive motor 6 can smoothly complete the driving action, improving the reliability of unlocking.

[0053] Secondly, this application also provides a method for unlocking a passive electronic lock, which includes the following steps: The watch strap key 2 is attached to the passive lock 1 so that the electrode probe 10 contacts the first electrode 3 and the second electrode 4 respectively; Power supply 9 delivers electrical energy to drive motor 6 of passive lock 1 through electrode probe 10, first electrode 3 and second electrode 4; After the drive motor 6 starts, it indirectly drives the bolt 7 to disengage from the lock hole 8; After the bolt 7 is completely disengaged from the keyhole 8, rotate the passive lock 1 to unlock.

[0054] Thirdly, this application also provides a method for unlocking a passive electronic lock, which further includes the following steps: Establish a Bluetooth connection between the mobile phone and the Bluetooth module 13 on the main control board 12 inside the watch strap key 2; The watch strap key 2 is attached to the passive lock 1 so that the electrode probe 10 contacts the first electrode 3, the second electrode 4 and the third electrode 5 respectively; The mobile phone transmits the password to the main control panel 11 of the passive lock 1 via the main control board 12 for password verification. If the verification is successful, the power supply 9 transmits electrical energy to the main control panel 11 of the passive lock 1 through the main control board 12, electrode probe 10, first electrode 3, second electrode 4 and third electrode 5, and the main control panel 11 controls the drive motor 6 to start. After the drive motor 6 starts, it indirectly drives the bolt 7 to disengage from the lock hole 8; After the bolt 7 is completely disengaged from the lock hole 8, rotate the passive lock 1 to unlock.

[0055] Fourthly, this application also provides a method for unlocking a passive electronic lock, which further includes the following steps: Click button 16 on the watch face of the watch strap key 2 to enter the password; The watch strap key 2 is attached to the passive lock 1 so that the electrode probe 10 contacts the first electrode 3, the second electrode 4 and the third electrode 5 respectively; The main control board 12 of the watch strap key 2 transmits the password to the main control panel 11 of the passive lock 1 for password verification; If the verification is successful, the power supply 9 transmits electrical energy to the main control panel 11 of the passive lock 1 through the electrode probe 10, the first electrode 3, the second electrode 4 and the third electrode 5, and the main control panel 11 controls the drive motor 6 to start. After the drive motor 6 starts, it indirectly drives the bolt 7 to disengage from the lock hole 8; After the bolt 7 is completely disengaged from the lock hole 8, rotate the passive lock 1 to unlock.

[0056] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A passive electronic lock system, characterized in that, include: A passive lock and a watch strap key adapted to the passive lock; The passive lock is provided with a first electrode and a second electrode arranged on the same axis at intervals. The first electrode is located at the center of the second electrode, and the second electrode is in the shape of a ring, surrounding and enclosing the first electrode. The passive lock is also equipped with a drive motor and a lock tongue. The passive lock is also provided with a lock hole. The drive motor is electrically connected to the first electrode and the second electrode respectively. The lock tongue is movably connected to the lock hole. The watch strap key has a power source inside, and the dial of the watch strap key has several electrode probes, which are electrically connected to the power source. When unlocking, the watch strap key is placed against the passive lock. The electrode probes are electrically connected to the first electrode and the second electrode respectively to transmit the electrical energy of the power source to the drive motor. After the drive motor starts, it indirectly drives the bolt to disengage from the lock hole, rotates the passive lock, and completes the unlocking.

2. The passive electronic lock system according to claim 1, characterized in that, The passive lock is also provided with a ring-shaped third electrode, which is coaxially disposed between the first electrode and the second electrode and surrounds the first electrode. The third electrode is electrically connected to the drive motor.

3. The passive electronic lock system according to claim 2, characterized in that, The passive lock also includes a main control panel. The bottoms of the first electrode, the second electrode, and the third electrode are all located on the main control panel. The first electrode, the second electrode, and the third electrode are electrically connected to the drive motor through the main control panel.

4. A passive electronic lock system according to claim 3, characterized in that, The watch key has a main control board inside its case that is electrically connected to the power supply. The main control board has a Bluetooth module. The top of the watch key's dial has a recessed area that accommodates the electrode probe. One end of the electrode probe extends into the watch case and is electrically connected to the main control board, while the other end is exposed in the recess.

5. A passive electronic lock system according to claim 4, characterized in that, The watch face with the key strap is equipped with several buttons, and the watch face is electrically connected to the main control board.

6. A passive electronic lock system according to claim 1, characterized in that, The passive lock also has a sliding cap slidably connected inside, the output end of the drive motor is provided with an eccentric column, a first groove is provided on the side of the sliding cap near the eccentric column, the eccentric column abuts against the inner wall of the first groove, and the sliding cap is fixedly connected to the lock tongue. A first spring is also provided between the sliding cap and the passive lock. The first spring is located above the lock tongue, and the central axis of the first spring coincides with or is parallel to the central axis of the lock tongue. One end of the first spring abuts against the passive lock, and the other end abuts against the sliding cap.

7. A passive electronic lock system according to claim 6, characterized in that, A locking pin is also provided between the passive lock and the sliding cap. The locking pin is slidably connected to the passive lock. A second spring is provided between the locking pin and the passive lock. The central axis of the second spring is perpendicular to the central axis of the lock tongue. A second groove is provided on the side of the sliding cap near the locking pin. One end of the second spring is connected to the passive lock, and the other end abuts against one end of the locking pin. The other end of the locking pin is movably connected to the second groove.

8. A passive electronic lock system according to claim 7, characterized in that, The top of the latch is provided with a first guide wedge, and the passive lock is also provided with a push button. The push button is provided with a second guide wedge, and the first guide wedge and the second guide wedge abut against each other.

9. A method for unlocking a passive electronic lock system according to any one of claims 1 to 8, characterized in that, The method includes the following steps: The watch strap key is attached to the passive lock so that the electrode probes contact the first electrode and the second electrode respectively; The power source delivers electrical energy to the drive motor of the passive lock through the electrode probe, the first electrode, and the second electrode. After the drive motor starts, it indirectly causes the lock tongue to disengage from the lock hole; After the bolt is completely disengaged from the keyhole, rotate the passive lock to unlock.

10. The unlocking method of a passive electronic lock system according to claim 4, characterized in that, The method further includes the following steps: Use your mobile phone to establish a Bluetooth connection with the Bluetooth module on the main control board inside the watch strap key; The watch strap key is attached to the passive lock so that the electrode probes contact the first electrode, the second electrode and the third electrode respectively; The mobile phone transmits the password to the main control panel of the passive lock via the main control board for password verification. If the verification is successful, the power supply transmits electrical energy to the main control panel of the passive lock through the main control board, electrode probe, first electrode, second electrode and third electrode, and the main control panel controls the drive motor to start; After the drive motor starts, it indirectly causes the lock tongue to disengage from the lock hole; After the bolt is completely disengaged from the keyhole, rotate the passive lock to unlock.

11. The unlocking method of a passive electronic lock system according to claim 5, characterized in that, The method further includes the following steps: Click the button on the watch face with the key strap to enter the password; The watch strap key is attached to the passive lock so that the electrode probes contact the first electrode, the second electrode and the third electrode respectively; The main control board of the watch strap key transmits the password to the main control panel of the passive lock for password verification; If the verification is successful, the power supply delivers electrical energy to the main control panel of the passive lock through the electrode probe, the first electrode, the second electrode and the third electrode, and the main control panel controls the drive motor to start; After the drive motor starts, it indirectly causes the lock tongue to disengage from the lock hole; After the bolt is completely disengaged from the keyhole, rotate the passive lock to unlock.

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