Passive electronic safety lock

Abstract

The utility model discloses a passive electronic safety lock, which is characterized in that at least two annular grooves are arranged on the outer wall of a lock body, and a sealing ring is arranged in each annular groove, so that the sealing performance between a lock shell and the lock body is obviously enhanced, and water is effectively prevented from permeating into the lock body from a small gap between the lock shell and the lock body. Due to the multi-sealing design, a reliable waterproof barrier is provided, and the risk of lock failure caused by water intrusion is reduced. And secondly, at least one part of the lock cover is embedded in the lock body, and the gap between the lock cover and the lock body is filled with the sealant, so that water is further prevented from entering the lock cylinder assembly through the path, the overall waterproof capacity of the lock cylinder assembly is improved, the durability and stability of the safety lock are enhanced, and the service life of the safety lock is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, and more specifically, to a passive electronic security lock. Background Technology

[0002] Security locks can be used in various scenarios such as doors, windows, boxes, filing cabinets, cars, computers, and jewelry boxes to prevent theft or other forms of illegal intrusion.

[0003] Security locks use a matching key to control the opening and closing of the lock body, ensuring that only authorized users can access and use items or equipment. This protection mechanism effectively prevents unauthorized personnel from accessing and using items or equipment, thereby improving their security. There are many types of security locks, including traditional mechanical locks, electronic locks, and magnetic locks. Mechanical locks are the most common type, typically consisting of a lock cylinder, a bolt, and a key. The lock cylinder is the core of the lock body; the key is inserted into the cylinder and rotated, and the movement of the cylinder controls the opening and closing of the bolt. Electronic locks, on the other hand, use electronic signals to control the opening and closing of the lock body and usually require battery power.

[0004] As a convenient technology in modern life, the stability and reliability of electronic components in electronic locks are crucial for long-term use. However, when faced with harsh weather conditions, especially rain and humid environments, the various sensors, chips, and circuit boards inside electronic locks are susceptible to moisture corrosion, which can lead to performance degradation, malfunctions, or even complete failure, thus affecting the normal function of the electronic lock.

[0005] Traditional electronic locks typically achieve waterproofing by applying a waterproof coating to the internal electronic components and circuit boards, forming a protective layer. However, the gap between the outer shell and the lock cylinder can easily become a potential pathway for moisture to seep into the lock. When moisture penetrates through this tiny gap, the waterproof coating may fail under continuous exposure to a humid environment, failing to effectively prevent moisture infiltration. This can easily damage critical components such as various sensors, chips, and circuit boards inside the lock. Furthermore, traditional waterproof coatings can affect the heat dissipation of the devices, thus impacting their performance and lifespan. Utility Model Content

[0006] In order to overcome the shortcomings of the existing technology, this utility model provides a passive electronic safety lock to solve the problem of poor waterproof performance of existing electronic locks.

[0007] The technical solution of this utility model is as follows: A passive electronic safety lock, comprising:

[0008] Lock case;

[0009] A lock cylinder assembly, at least a portion of which is installed within the lock housing;

[0010] The lock cylinder assembly includes a lock body and a lock cover. The outer wall of the lock body is provided with at least two annular grooves, and a sealing ring is provided in each annular groove. The sealing ring is used to seal the gap between the lock shell and the lock body. At least a portion of the lock cover is embedded in the lock body, and there is a gap between the lock cover and the lock body. The gap is filled with sealant.

[0011] Furthermore, the lock cylinder assembly also includes a circuit board disposed within the lock body. A plurality of conductive posts are disposed within the lock cover, with one end of each conductive post protruding from the end face of the lock cover and the other end of each conductive post contacting a conductive contact point on the circuit board.

[0012] Furthermore, the lock body includes a first lock body and a second lock body, the first lock body and the second lock body are fixedly connected, and there is a receiving cavity between the first lock body and the second lock body, and the circuit board is installed in the receiving cavity.

[0013] Furthermore, the second lock body has a through hole on its side wall, and a first spherical body is disposed in the through hole. A drive motor and a cam are disposed inside the second lock body. The drive motor is connected to the circuit board. The drive motor can drive the cam to rotate so that the cam switches between a stop position and a release position. The inner wall of the lock housing has a first arc-shaped groove. When the cam is in the stop position, at least a portion of the first spherical body is restricted in the first arc-shaped groove. When the cam is in the release position, the first spherical body can move out of the first arc-shaped groove along the axial direction of the through hole so that the first spherical body is partially embedded in the recess of the cam.

[0014] Furthermore, the second lock body sidewall is provided with a blind hole formed by a recess inward from the outer wall of the second lock body. A second spherical body and a spring are provided in the blind hole. The inner wall of the lock shell is provided with a second arc-shaped groove. One end of the spring abuts against the bottom wall of the blind hole, and the other end of the spring abuts against the second spherical body. When the blind hole and the second arc-shaped groove are aligned, the spring drives the second spherical body to move along the axial direction of the blind hole, so that at least a portion of the second spherical body is embedded in the second arc-shaped groove.

[0015] Furthermore, it also includes a latch, a nut, and a washer. The outer wall of the second lock body is provided with an annular platform. The latch, the washer, and the nut are sequentially sleeved on the second lock body, with one end of the latch in contact with the annular platform and the other end of the latch in contact with the washer.

[0016] Furthermore, the lock shell is a hollow cavity structure with an opening at one end, one end of the lock body is exposed through the opening, and the end of the lock body near the opening is provided with a groove for matching the first tactile protrusion on the electronic key.

[0017] Furthermore, the lock housing is provided with an annular flange protruding into the opening, and the annular flange is provided with a notch formed by recessing inward from the outer edge of the annular flange. The notch is adapted to the second locking protrusion of the electronic key. When the electronic key is rotated to a predetermined position, the notch is aligned with the second locking protrusion on the electronic key so that the electronic key can be pulled out.

[0018] Furthermore, the lock housing includes a first housing and a second housing, the first housing and the second housing are fixedly connected, and the outer wall of the second housing is provided with external threads.

[0019] Furthermore, a Hall sensor is provided on the circuit board, and a magnetic component is embedded in the second housing. When the lock cylinder assembly is rotated to the locked position, the magnetic component is located above the Hall sensor, and the Hall sensor emits a locking signal.

[0020] The advantages of this utility model based on the above solution are as follows:

[0021] (1) The present invention provides a passive electronic security lock, wherein the lock cylinder assembly includes a circuit board, which is disposed in the lock body. Multiple conductive posts are disposed inside the lock cover, with one end of each conductive post protruding from the end face of the lock cover and the other end contacting a conductive contact point on the circuit board. With this design, when the electronic key is inserted into the security lock, the electronic key provides power to the lock cylinder assembly via the conductive posts in a reverse power supply manner. This eliminates the need for internal batteries and charging management modules, as well as external power supplies and complex electrical wiring, resulting in a compact lock cylinder assembly structure and a small overall size. Furthermore, the electronic key can perform dynamic key verification with the security lock, and unlocking is achieved upon successful verification. The passive electronic security lock provided by this invention requires only one electronic key and can unlock multiple passive electronic security locks through dynamic key verification, reducing the difficulty of managing the electronic key.

[0022] (2) The passive electronic safety lock provided by this utility model has at least two annular grooves on the outer wall of the lock body, and a sealing ring is installed in each annular groove. This design significantly enhances the sealing between the lock shell and the lock body, effectively preventing moisture from penetrating through the tiny gaps between the lock shell and the lock body. Compared with existing electronic locks, this multi-seal design provides a reliable waterproof barrier and reduces the risk of lock failure caused by moisture intrusion. Secondly, at least part of the lock cover is embedded in the lock body, and the gap between the lock cover and the lock body is filled with sealant, further preventing moisture from entering the lock cylinder assembly through this path. This not only improves the overall waterproof capability of the lock cylinder assembly, but also enhances the durability and stability of the safety lock and extends its service life. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a side view of the safety lock in an embodiment of the present utility model;

[0025] Figure 2 This is a front view of the safety lock in an embodiment of this utility model;

[0026] Figure 3 This is a cross-sectional view of the safety lock in an embodiment of this utility model;

[0027] Figure 4 This is one of the exploded structural diagrams of the safety lock in this embodiment of the present utility model;

[0028] Figure 5 This is the second exploded view of the safety lock in this embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the internal structure of the safety lock in an embodiment of the present utility model;

[0030] Figure 7 This is a schematic diagram of the electronic key in an embodiment of the present invention.

[0031] In the diagram, 1. Lock housing; 11. First housing; 111. Annular flange; 112. Notch; 12. Second housing; 121. First arc groove; 122. Second arc groove; 2. Lock cylinder assembly; 21. Lock body; 211. First lock body; 2111. Annular groove; 2112. Groove; 212. Second lock body; 22. Lock cover; 23. Circuit board; 24. Conductive post; 25. First sphere; 26. Drive motor; 27. Cam; 271. Notch; 272. Protrusion; 28. Second sphere; 29. ​​Spring; 3. Sealing ring; 4. Lock tongue; 5. Nut; 6. Washer; 7. Hall sensor; 8. Magnetic component; 9. Electronic key; 91. Conductive pin; 92. First locking protrusion; 93. Second locking protrusion. Detailed Implementation

[0032] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present invention by way of example, but should not be used to limit the scope of the present invention, that is, the present invention is not limited to the described embodiments.

[0033] To better understand this utility model, the following description, in conjunction with the accompanying drawings and embodiments, will further illustrate the present utility model:

[0034] See Figures 1-4 As shown in the figure, a passive electronic security lock provided by this utility model embodiment includes a lock shell 1 and a lock cylinder assembly 2, with at least a portion of the lock cylinder assembly 2 installed inside the lock shell 1.

[0035] The safety lock provided in this embodiment is applicable to cash boxes, ATMs, VTMs, ring main units, distribution cabinets, switching stations, switch stations, junction boxes, capacitor compensation integrated distribution boxes, terminal boxes, metering boxes, multi-user meter boxes, etc.

[0036] In this embodiment, the lock cylinder assembly 2 is a passive lock, requiring no external power supply or built-in battery, greatly simplifying its structure and making the overall size of the security lock more compact. Secondly, the security lock employs a closed-loop technology, with the electronic key 9 providing power and identification information. Users can manage the lock comprehensively through the electronic key 9 and the intelligent lock control management software. The electronic key 9 provides power and identification information, while the intelligent lock control management software sets unlocking permissions and uploads unlocking records. The intelligent lock control management system enables functions such as permission settings, lock status viewing, unlocking record storage and retrieval, and lock information management.

[0037] Specifically, the security lock provided in this embodiment of the invention primarily relies on the contact power supply and authentication between the electronic key 9 and the security lock. Specifically, when the electronic key 9 is inserted into the security lock, it provides power to the lock via reverse power supply and performs dynamic key verification. Once verification is successful, the lock can be unlocked. Furthermore, in some embodiments, the electronic key 9 also supports remote authorization via wireless technologies such as Bluetooth and NFC. It should be noted that this embodiment does not involve improvements to the data interaction process between the electronic key 9 and the remote terminal, or between the electronic key 9 and the security lock; therefore, this application embodiment will not elaborate on this part.

[0038] See Figure 4 As shown, the lock cylinder assembly 2 provided in this embodiment includes a lock body 21 and a lock cover 22. The outer wall of the lock body 21 is provided with at least two annular grooves 2111, and a sealing ring 3 is provided in each annular groove 2111. The sealing ring 3 is used to seal the gap between the lock shell 1 and the lock body 21. At least a portion of the lock cover 22 is embedded in the lock body 21, and there is a gap between the lock cover 22 and the lock body 21. The gap is filled with sealant.

[0039] Specifically, at least two annular grooves 2111 are provided on the outer wall of the lock body 21, and a sealing ring 3 is installed in each annular groove 2111. This design significantly enhances the sealing between the lock shell 1 and the lock body 21, effectively preventing moisture from penetrating through the tiny gaps between the lock shell 1 and the lock body 21. Compared with existing electronic locks, this multi-seal design provides a reliable waterproof barrier, reducing the risk of lock malfunction due to moisture intrusion. Secondly, at least a portion of the lock cover 22 is embedded in the lock body 21, and the gap between the lock cover 22 and the lock body 21 is filled with sealant, further preventing moisture from entering the lock cylinder assembly 2 through this path. This not only improves the overall waterproof capability of the lock cylinder assembly 2 but also enhances the durability and stability of the security lock, extending its service life.

[0040] See Figures 4-5 As shown, the lock cylinder assembly 2 also includes a circuit board 23, which is disposed inside the lock body 21. Multiple conductive posts 24 are disposed inside the lock cover 22, with one end of each conductive post 24 protruding from the end face of the lock cover 22 and the other end contacting a conductive contact point on the circuit board 23. Specifically, the multiple conductive posts 24 are configured one-to-one with multiple conductive pins 91 on the electronic key 9. When the electronic key 9 is inserted into the security lock, the multiple conductive pins 91 on the electronic key 9 correspond to and contact the multiple conductive posts 24, thereby enabling the electronic key 9 to provide power to the security lock via reverse power supply.

[0041] In some embodiments, the lock body 21 includes a first lock body 211 and a second lock body 212, which are fixedly connected. A receiving cavity is provided between the first lock body 211 and the second lock body 212, and the circuit board 23 is installed in the receiving cavity. In this embodiment, the first lock body 211 and the second lock body 212 are designed as separate units, and are assembled and connected by fasteners such as bolts and screws. This design facilitates the installation of components such as the circuit board 23 and the lock cover 22 into the inner cavity of the lock body 21.

[0042] See Figure 3 and Figure 6 As shown, the second lock body 212 has a through hole on its side wall, and a first spherical body 25 is disposed in the through hole. The second lock body 212 is equipped with a drive motor 26 and a cam 27. The drive motor 26 is connected to the circuit board 23. The drive motor 26 can drive the cam 27 to rotate so that the cam 27 can switch between a stop position and a release position. The inner wall of the lock housing 1 is provided with a first arc-shaped groove 121. When the cam 27 is in the stop position, at least a part of the first spherical body 25 is restricted in the first arc-shaped groove 121. When the cam 27 is in the release position, the first spherical body 25 can move out of the first arc-shaped groove 121 along the axial direction of the through hole so that the first spherical body 25 is partially embedded in the recess 271 of the cam 27.

[0043] Specifically, when the electronic key 9 is inserted into the security lock, so that the multiple conductive pins 91 on the electronic key 9 contact the multiple conductive posts 24 of the security lock, the electronic key 9 provides power to the security lock through reverse power supply and performs dynamic key verification. After successful verification, the drive motor 26 rotates, driving the cam 27 to rotate from the stop position to the release position. Then, the electronic key 9 is rotated. Since the lock body 21 and the electronic key 9 are engaged, the lock body 21 rotates accordingly. The first spherical body 25 is subjected to external force and moves out of the first arc groove 121 along the axis of the through hole. The first spherical body 25 is partially embedded in the recess 271 of the cam 27. In this embodiment, the design of the first spherical body 25 allows it to move along the axis of the through hole under external force, and the first spherical body 25 itself will also rotate. This design increases the flexibility of the lock cylinder assembly 2, allowing the first spherical body 25 to quickly exit from the first arc groove 121, thereby accelerating the unlocking speed of the lock body 21. Secondly, when the first spherical body 25 exits the first arc groove 121, if it only relies on axial movement, it may generate significant resistance and wear due to direct friction with the inner wall of the first arc groove 121. The first spherical body 25 in this application allows the spherical body to rotate, thereby causing rolling friction between the first spherical body 25 and the inner wall of the first arc groove 121, thus significantly reducing friction and wear.

[0044] Similarly, when the drive motor 26 rotates, causing the cam 27 to rotate from the release position to the stop position, the cam 27 pushes the first spherical body 25 to move along the axis of the through hole towards the first arc groove 121 until the first spherical body 25 is partially embedded in the first arc groove 121. At this time, the protrusion 272 of the cam 27 abuts against the first spherical body 25 to prevent the first spherical body 25 from moving out of the first arc groove 121, thereby completing the locking action.

[0045] See Figure 3 As shown, the side wall of the second lock body 212 is provided with a blind hole formed by the inward indentation from the outer wall of the second lock body 212. A second spherical body 28 and a spring 29 are provided in the blind hole. The inner wall of the lock shell 1 is provided with a second arc-shaped groove 122. One end of the spring 29 abuts against the bottom wall of the blind hole, and the other end of the spring 29 abuts against the second spherical body 28. When the blind hole and the second arc-shaped groove 122 are aligned, the spring 29 drives the second spherical body 28 to move along the axial direction of the blind hole, so that at least a part of the second spherical body 28 is embedded in the second arc-shaped groove 122.

[0046] Specifically, when the lock body 21 rotates in the unlocking direction along with the electronic key 9, the second spherical body 28 moves into the inner cavity of the blind hole along the axis of the blind hole, and the spring 29 is compressed. At this time, the second spherical body 28 completely exits from the second arc-shaped groove 122. When the lock body 21 rotates in the locking direction to the predetermined position along with the electronic key 9, the blind hole and the second arc-shaped groove 122 are aligned. At this time, under the driving action of the spring 29, the second spherical body 28 moves into the second arc-shaped groove 122 along the axis of the blind hole until the second spherical body 28 abuts against the inner wall of the second arc-shaped groove 122. At this time, the spring 29 is still in a compressed state, and the spring 29 always applies a force to the second spherical body 28 to drive the second spherical body 28 to abut against the inner wall of the second arc-shaped groove 122.

[0047] See Figure 3 As shown, the safety lock provided in this embodiment also includes a bolt 4, a nut 5 and a washer 6. The outer wall of the second lock body 212 is provided with an annular platform. The bolt 4, the washer 6 and the nut 5 are sequentially sleeved on the second lock body 212, and one end of the bolt 4 is in contact with the annular platform, and the other end of the bolt 4 is in contact with the washer 6.

[0048] Specifically, the lock housing 1 is a hollow cavity structure with an opening at one end. One end of the lock body 21 is exposed through the opening, and the end of the lock body 21 near the opening is provided with a groove 2112 for matching the first latching protrusion 92 on the electronic key 9. When the drive motor 26 rotates, it drives the cam 27 from the stop position to the release position. Then, when the electronic key 9 is rotated, the lock body 21, which is engaged with the electronic key 9, rotates accordingly, and the bolt 4 also rotates to the unlock position, thereby completing the unlocking action.

[0049] To prevent the electronic key 9 from being left unlocked after being removed, in some embodiments, the lock housing 1 is provided with an annular flange 111 protruding into the opening. The annular flange 111 has a notch 112 formed by indentation from its outer edge inwards. The notch 112 is adapted to the second locking protrusion 93 of the electronic key 9. When the electronic key 9 is rotated to a predetermined position, the notch 112 aligns with the second locking protrusion 93 on the electronic key 9, allowing the electronic key 9 to be removed. With this design, when the electronic key 9 is inserted into the security lock to unlock it, the second locking protrusion 93 and the notch 112 are misaligned, preventing the electronic key 9 from being removed while unlocked. When the electronic key 9 is rotated to the locked position, the second locking protrusion 93 and the notch 112 align, allowing the electronic key 9 to be removed and the security lock to be locked.

[0050] In this embodiment, the lock housing 1 includes a first housing 11 and a second housing 12, which are fixedly connected. The outer wall of the second housing 12 is provided with external threads. This design facilitates the assembly of the safety lock.

[0051] In some embodiments, a Hall sensor 7 is provided on the circuit board 23, and a magnetic element 8 is embedded on the second housing 12. When the lock cylinder assembly 2 is rotated to the locked position, the magnetic element 8 is located above the Hall sensor 7, and the Hall sensor 7 emits a locking signal. The electronic key 9 receives the locking signal and processes it to display on its display screen that the security lock has been locked.

[0052] It should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art, or the orientation or positional relationship that the product is usually placed in during use. It is only for the purpose of facilitating the description of this application and simplifying the description, and is not intended to 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, it should not be construed as a limitation of this application.

[0053] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0054] The present utility model patent has been described above with reference to the accompanying drawings. Obviously, the implementation of the present utility model patent is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present utility model patent, or the direct application of the inventive concept and technical solution of the present utility model patent to other occasions without modification, are all within the protection scope of the present utility model.

Claims

1. A passive electronic safety lock, characterized in that, include: Lock case (1); A lock cylinder assembly (2), at least a portion of which is installed within the lock housing (1); The lock cylinder assembly (2) includes a lock body (21) and a lock cover (22). The outer wall of the lock body (21) is provided with at least two annular grooves (2111), and a sealing ring (3) is provided in each annular groove (2111). The sealing ring (3) is used to seal the gap between the lock shell (1) and the lock body (21). At least a portion of the lock cover (22) is embedded in the lock body (21), and there is a gap between the lock cover (22) and the lock body (21), which is filled with sealant.

2. The passive electronic safety lock as described in claim 1, characterized in that: The lock cylinder assembly (2) also includes a circuit board (23), which is disposed inside the lock body (21). A plurality of conductive posts (24) are disposed inside the lock cover (22). One end of the conductive post (24) protrudes from the end face of the lock cover (22), and the other end of the conductive post (24) contacts the conductive contact point on the circuit board (23).

3. A passive electronic safety lock as described in claim 2, characterized in that: The lock body (21) includes a first lock body (211) and a second lock body (212), the first lock body (211) and the second lock body (212) are fixedly connected, and there is a receiving cavity between the first lock body (211) and the second lock body (212), and the circuit board (23) is installed in the receiving cavity.

4. A passive electronic safety lock as described in claim 3, characterized in that: The second lock body (212) has a through hole on its side wall, and a first spherical body (25) is provided in the through hole. The second lock body (212) has a drive motor (26) and a cam (27) provided inside. The drive motor (26) is connected to the circuit board (23). The drive motor (26) can drive the cam (27) to rotate so that the cam (27) switches between a stop position and a release position. The inner wall of the lock shell (1) has a first arc groove (121). When the cam (27) is in the stop position, at least a part of the first spherical body (25) is restricted in the first arc groove (121). When the cam (27) is in the release position, the first spherical body (25) can move out of the first arc groove (121) along the axial direction of the through hole so that the first spherical body (25) is partially embedded in the notch (271) of the cam (27).

5. A passive electronic safety lock as described in claim 4, characterized in that: The second lock body (212) has a blind hole formed by the inward indentation from the outer wall of the second lock body (212). A second spherical body (28) and a spring (29) are provided in the blind hole. The inner wall of the lock shell (1) is provided with a second arc-shaped groove (122). One end of the spring (29) abuts against the bottom wall of the blind hole, and the other end of the spring (29) abuts against the second spherical body (28). When the blind hole and the second arc-shaped groove (122) are aligned, the spring (29) drives the second spherical body (28) to move along the axial direction of the blind hole, so that at least a part of the second spherical body (28) is embedded in the second arc-shaped groove (122).

6. A passive electronic safety lock as described in claim 5, characterized in that: It also includes a latch (4), a nut (5) and a washer (6). The outer wall of the second lock body (212) is provided with an annular platform. The latch (4), the washer (6) and the nut (5) are sequentially sleeved on the second lock body (212), and one end of the latch (4) is in contact with the annular platform, and the other end of the latch (4) is in contact with the washer (6).

7. A passive electronic safety lock as described in claim 3, characterized in that: The lock shell (1) is a hollow cavity structure with an opening at one end. One end of the lock body (21) is exposed through the opening, and the end of the lock body (21) near the opening is provided with a groove (2112) for matching the first latch protrusion (92) on the electronic key (9).

8. A passive electronic safety lock as described in claim 7, characterized in that: The lock case (1) is provided with an annular flange (111) protruding into the opening. The annular flange (111) is provided with a notch (112) formed by recessing from the outer edge of the annular flange (111) inward. The notch (112) is adapted to the second latching protrusion (93) of the electronic key (9). When the electronic key (9) is rotated to a predetermined position, the notch (112) is aligned with the second latching protrusion (93) on the electronic key (9) so that the electronic key (9) can be pulled out.

9. A passive electronic safety lock as described in claim 3, characterized in that: The lock case (1) includes a first housing (11) and a second housing (12), the first housing (11) and the second housing (12) are fixedly connected, and the outer wall of the second housing (12) is provided with external threads.

10. A passive electronic safety lock as described in claim 9, characterized in that: A Hall sensor (7) is provided on the circuit board (23), and a magnetic component (8) is embedded on the second housing (12). When the lock cylinder assembly (2) is rotated to the locked position, the magnetic component (8) is located above the Hall sensor (7), and the Hall sensor (7) sends a locking signal.

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