A double-contact passive electronic lock cylinder capable of detecting the state of the lock cylinder

Abstract

This invention relates to the technical field of electronic lock cylinders, and in particular to a dual-contact passive electronic lock cylinder capable of detecting the lock cylinder status, comprising a main board, a lock cylinder shell, and a lock cylinder outer shell; the main board is mounted on the outer wall of the lock cylinder shell, and the lock cylinder shell is inserted into the lock cylinder outer shell; it also includes a solenoid drive assembly, a status monitoring assembly positive electrode pin, and a probe sleeve; the solenoid drive assembly includes a first permanent magnet, a solenoid coil, a steel tube, a spring, and a second permanent magnet; the steel tube is fixedly inserted inside the solenoid coil; the first and second permanent magnets are slidably mounted inside the two ends of the steel tube; the spring is located in the middle of the steel tube, and the two ends of the spring abut against the first and second permanent magnets respectively; the status monitoring assembly includes a Hall effect device mounted on the main board and an induction permanent magnet fixedly mounted outside the lock cylinder outer shell; it solves the technical problems of existing electronic lock cylinders being easily opened by magnetic field interference, having undetectable status, poor waterproof performance, and easily broken wires.

Description

Technical Field

[0001] This invention relates to the technical field of electronic lock cylinders, and in particular to a dual-contact passive electronic lock cylinder capable of detecting the status of the lock cylinder. Background Technology

[0002] The lock cylinder is the core component of a lock, directly determining its anti-theft performance, structural stability, and lifespan. As smart electronic locks gradually replace traditional mechanical locks, traditional pure mechanical lock cylinders can no longer meet the control requirements of intelligent lock bodies. Traditional mechanical lock cylinders rely entirely on mechanical keys to drive the dial to complete the unlocking action. Their structure and function are limited, and they cannot realize intelligent functions such as electronic signal recognition, electronically controlled unlocking, and feedback of unlocking status electrical signals. They are difficult to match the core requirements of modern electronic locks, such as access control, remote control, and status monitoring, and have drawbacks such as poor adaptability and insufficient intelligent expandability.

[0003] Currently, most electronic lock cylinders on the market are composed of mechanical structures and simple electronic control components. They use motors or electromagnets to drive the lock cylinder bolt and dial to rotate, achieving electronic unlocking. Compared to traditional mechanical lock cylinders, they have basic electronic unlocking capabilities. As the core of passive electronic locks, electronic lock cylinders currently have two main technical solutions: motor-driven and solenoid-driven. 1. Motor-driven method: By controlling the motor to rotate the rotor, the locking mechanism can retract, thereby rotating the lock cylinder to unlock. Disadvantages: Complex structure, high production cost, difficulty in waterproofing the motor area, and the motor is easily damaged by water ingress. II. Solenoid Drive Method: Method 1: The lock cylinder is in a free-spinning state when it is not powered on. Two permanent magnets are installed at the two ends of a repulsive solenoid. When the coil is energized, a magnetic field is generated, which pops the magnets out, thus rotating the lock cylinder to unlock it. Disadvantages: The lock cylinder status cannot be detected. Placing a large magnet around the lock cylinder allows unlocking without an electronic key, posing a safety hazard to on-site equipment and reducing the security and reliability of the electronic lock. Method 2: The lock cylinder is in a non-idling state when not powered. One end has a T-shaped magnet (or a round magnet or other irregularly shaped magnet), and the other end has a pin (screw or threaded pin). When the solenoid is powered, it generates a magnetic field that attracts the magnet. The solenoid then retracts the pin, thus rotating the lock cylinder to unlock. Disadvantages: The solenoid is a moving part and cannot be glued; prolonged water ingress can damage the coil. The solenoid wire will frequently rub against the lock cylinder housing, making it prone to breakage. Placing a large magnet at the magnet location creates magnetic repulsion, causing the T-shaped magnet to retract. The T-shaped magnet can then attract the pin, allowing the lock cylinder to be rotated to unlock, posing a safety hazard to on-site equipment and reducing the security and reliability of the electronic lock. Method 3: When the lock cylinder is not powered, it is in a non-idling state. A stainless steel tube (non-magnetic material) is built into the solenoid, and a permanent magnet is fixed inside. The principle of repulsion is used to push away another permanent magnet. When the solenoid is powered, it generates a magnetic field. The pushed-away permanent magnet overcomes the repulsive force of the fixed permanent magnet and is attracted to it, thereby rotating the lock cylinder to unlock it. Disadvantage: Placing a large magnet at the magnet position will cause the magnetic poles to repel each other, which may push the magnet back in, creating a safety hazard for the equipment on site and reducing the security and reliability of the electronic lock. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a dual-contact passive electronic lock cylinder that can detect the status of the lock cylinder, solving the problems of existing electronic lock cylinders being easily opened due to magnetic field interference, having no detectable status, poor waterproof performance, and easily broken wires.

[0005] The present invention provides a dual-contact passive electronic lock cylinder capable of detecting the status of the lock cylinder, comprising a main board, a lock cylinder housing, and a lock cylinder outer shell; The main board is mounted on the outer wall of the lock cylinder housing, which is inserted into the inside of the lock cylinder housing; it also includes a solenoid drive assembly, a status monitoring assembly positive terminal pin, and a probe sleeve. The solenoid drive assembly includes a first permanent magnet, a solenoid coil, a steel tube, a spring, and a second permanent magnet; The steel pipe is fixedly inserted inside the helical coil; The first permanent magnet and the second permanent magnet are respectively slidably installed inside the two ends of the steel pipe; The spring is located in the middle of the steel tube, and the two ends of the spring abut against the first permanent magnet and the second permanent magnet, respectively. The status monitoring components include Hall effect sensors mounted on the main board and permanent magnets fixed to the outside of the lock cylinder housing. Two sets of positive pins are inserted and fixed on the probe sleeve, and the two sets of positive pins are used for power supply and communication, respectively. The probe sleeve is mounted on the motherboard and is used to insulate the positive terminal pin from the lock cylinder shell. The motherboard is equipped with a side-soldering ground probe, which is in contact with the lock cylinder shell and grounded; Hall effect devices are used to detect the position change of the inductive permanent magnet, thereby generating a lock cylinder status signal.

[0006] Preferably, it also includes a lock cylinder cover plate; The lock cylinder cover is installed on the top of the lock cylinder housing; the lock cylinder cover is used to prevent the key from being pulled out after the key is inserted, so as to ensure the continuity of communication.

[0007] Preferably, headless screws are also included; The bottom of the lock cylinder housing is provided with a positioning groove. A headless screw is screwed onto the lock cylinder housing, and the end of the headless screw is inserted into the positioning groove of the lock cylinder housing. The positioning groove of the lock cylinder housing is used to axially limit the lock cylinder housing and prevent the lock cylinder from falling off.

[0008] Preferably, the lock cylinder housing has a positioning groove inside for accommodating the helical coil, and the entire lock cylinder housing is filled with sealant.

[0009] Preferably, the frame of the solenoid coil is made of a non-magnetic material, specifically aluminum alloy, and the copper wire wound on the solenoid coil is enameled wire, and a transparent protective sleeve is provided on the outside.

[0010] Preferably, the lock cylinder shell side plate is provided with multiple positioning holes to adapt to the installation of locks of different specifications, thereby realizing a modular design.

[0011] Preferably, the steel pipe is made of stainless steel, the lock cylinder shell is made of stainless steel, and the first and second permanent magnets are N35 permanent magnets.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. High protection level: The lock cylinder is fully glued, which can ensure that it will not be damaged by water immersion; 2. Status detection: The lock cylinder is equipped with a Hall element, which can be linked with the electronic key to upload the lock cylinder status; 3. Stable communication: The lock cylinder has a limit cover that cannot be pulled out during the unlocking process, ensuring uninterrupted communication. 4. Stable grounding: The main lock cylinder board uses a side-welded grounding probe, which can stabilize the main lock cylinder board and ensure that the grounding will not be disconnected; 5. Coil protection: The lock cylinder shell has a groove to hold the coil wire. After the glue is applied, the coil is fixed in place, which can protect the coil wire from breaking. 6. Anti-magnetic field protection: A spring is installed between the two permanent magnets. When there are strong magnets at one or both ends that repel each other, the interference can be canceled and malicious unlocking can be prevented. 7. Modular design: The shape is consistent with other lock cylinders in our company, and it can be adapted to most lock shells; 8. Low cost: simple structure, simple installation process, and high production efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the isometric structure of the present invention; Figure 2 This is an isometric structural diagram of the connection between the lock cylinder housing and the lock cylinder cover plate, etc. Figure 3 This is an exploded structural diagram of the present invention; Figure 4 This is a side view of the connection between the lock cylinder shell and the coil, etc. Figure 5 This is a schematic diagram of the lock cylinder when it is locked. Figure 6 This is a schematic diagram of the lock cylinder when it is unlocked; Figure 7 This is a top view structural diagram of the present invention; Figure 8 This is a front view structural diagram of the present invention.

[0014] The following are labels in the attached diagram: 1. Positive electrode pin; 2. Probe sleeve; 3. Main board; 4. Lock cylinder shell; 5. First permanent magnet; 6. Coil; 7. Steel pipe; 8. Spring; 9. Lock cylinder outer shell; 10. Lock cylinder cover plate; 11. Induction permanent magnet; 12. Headless screw; 13. Second permanent magnet. Detailed Implementation

[0015] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0016] Example 1 like Figures 1 to 8 As shown, a dual-contact passive electronic lock cylinder capable of detecting the lock cylinder status according to the present invention includes a main board 3, a lock cylinder shell 4, and a lock cylinder outer shell 9; The main board 3 is mounted on the outer wall of the lock cylinder shell 4, and the lock cylinder shell 4 is inserted into the lock cylinder outer shell 9; it also includes a solenoid drive assembly, a status monitoring assembly positive pin 1, and a probe sleeve 2. The solenoid drive assembly includes a first permanent magnet 5, a solenoid coil 6, a steel tube 7, a spring 8, and a second permanent magnet 13; The steel pipe 7 is fixedly inserted inside the helical coil 6; The first permanent magnet 5 and the second permanent magnet 13 are respectively slidably installed inside the two ends of the steel pipe 7; Spring 8 is located in the middle of steel tube 7, and both ends of spring 8 abut against the first permanent magnet 5 and the second permanent magnet 13 respectively. The status monitoring components include Hall effect sensors mounted on the main board 3 and a permanent magnet 11 fixedly mounted on the outside of the lock cylinder housing 9. Two sets of positive pins 1 are inserted and fixed on the probe sleeve 2. The two sets of positive pins 1 are used for power supply and communication, respectively. The probe sleeve 2 is installed on the motherboard 3. The probe sleeve 2 is used to insulate the positive electrode pin 1 from the lock core shell 4. The motherboard 3 is equipped with a side-soldering ground probe, which is grounded in contact with the lock cylinder shell 4; It also includes the lock cylinder cover plate 10; Lock cylinder cover plate 10 is installed on the top of lock cylinder shell 4; In this embodiment, the lock cylinder cover plate 10 is used to restrict the key from being pulled out after the key is inserted, ensuring communication continuity. During operation, the solenoid coil 6 is not energized in the locked state, and the elastic force of the spring 8 pushes the first permanent magnet 5 and the second permanent magnet 13 to both ends, so that the two permanent magnets contact the limiting structure of the lock cylinder shell 4, thus preventing the lock cylinder from rotating. When the authorized electronic key is inserted, it is powered through the positive pin 1, and the main board 3 controls the solenoid coil 6 to generate a magnetic field. This magnetic field generates an attraction force on the first permanent magnet 5 and the second permanent magnet 13 towards the middle of the steel pipe 7. When the attraction force is greater than the elastic force of the spring 8, the two permanent magnets are pulled towards the middle, thereby releasing the limiting force with the lock cylinder shell 4. At this time, turning the key can unlock the lock. In terms of status detection, the Hall element on the main board 3 detects the position change of the sensing permanent magnet 11 outside the lock cylinder shell 9. When the lock cylinder shell 4 rotates or resets relative to the lock cylinder shell 9, the Hall element generates a corresponding level signal change and uploads it to the electronic key through the positive pin 1, thereby generating a lock cylinder status signal. The beneficial effects of this embodiment include: 1. Strong resistance to magnetic field interference: A spring 8 is set between the two permanent magnets. When an external strong magnet attempts to attract or repel a single permanent magnet, the elastic force of the spring 8 provides a counteracting force, effectively preventing illegal unlocking caused by malicious magnet attacks. 2. Real-time status detection: Through the cooperation of Hall effect components and induction permanent magnet 11, the status of the lock cylinder can be detected and uploaded in real time during the unlocking and locking process, realizing intelligent management of the lock; 3. Stable and reliable grounding: The main board 3 uses a side-welded ground probe directly welded to the lock cylinder shell 4, which not only stabilizes the main board but also ensures a low-impedance grounding circuit, avoiding communication failures caused by poor contact. 4. Simple structure and low cost: Compared with the motor drive solution, this embodiment has fewer parts and a simpler assembly process, making it suitable for mass production; As a preferred embodiment, the following improvements are also provided: the sliding friction parts between the inner wall of the steel pipe 7 and the first permanent magnet 5 and the second permanent magnet 13 can be coated with a polytetrafluoroethylene self-lubricating coating or treated with hard chrome plating to reduce wear and ensure smooth operation over a long period of time; after the lead wire of the solenoid coil 6 is welded to the main board 3, it is protected with heat shrink tubing and fixed with glue at the wire root to prevent vibration breakage; elastic conductive glue can be added around the side-welded ground probe to further ensure grounding continuity.

[0017] It should be understood that the control circuit on the motherboard 3, the signal processing circuit of the Hall element, and the communication protocol of the electronic key, which are not described in detail in this embodiment, are all existing technologies well known to those skilled in the art. Their specific implementation methods can be found in relevant technical manuals or commercially available products, and will not be elaborated here.

[0018] Example 2 Based on Embodiment 1, the present invention provides a dual-contact passive electronic lock cylinder capable of detecting the lock cylinder status, which further includes a headless screw 12; The bottom of the lock cylinder housing 4 is provided with a positioning groove, and the headless screw 12 is screwed onto the lock cylinder housing 9, with the end of the headless screw 12 inserted into the positioning groove of the lock cylinder housing 4. The lock cylinder housing 4 has a positioning groove inside for accommodating the helical coil 6, and the entire lock cylinder housing 9 is filled with sealant. The frame of the solenoid coil 6 is made of a non-magnetic material, specifically aluminum alloy. The copper wire wound on the solenoid coil 6 is enameled wire, and a transparent protective sleeve is provided on the outside. The lock cylinder housing has multiple positioning holes on its four side plates; Steel pipe 7 is a stainless steel pipe, lock core shell 4 is made of stainless steel, and the first permanent magnet 5 and the second permanent magnet 13 are N35 permanent magnets. In this embodiment, the positioning groove of the lock cylinder shell 4 is used to axially limit the lock cylinder shell to prevent the lock cylinder from falling off. The frame of the solenoid coil 6 is made of non-magnetic material, specifically aluminum alloy. The copper wire wound on the solenoid coil 6 is enameled wire, and a transparent protective sleeve is provided on the outside. The beneficial effects of this embodiment include: 1. High protection level: The integral potting sealant can ensure that it will not be damaged by water immersion, and is suitable for harsh environments such as outdoor humidity and water immersion. 2. Stable communication: The lock cylinder cover 10 prevents the key from being pulled out during the unlocking process, ensuring uninterrupted communication; 3. Reliable wire protection: The positioning groove of the lock cylinder housing 9 constrains and fixes the coil lead with potting glue, avoiding the coil lead from rubbing against the housing and breaking due to frequent operation; 4. Modular design: The multiple positioning holes on the four side plates of the lock cylinder shell make this lock cylinder consistent in shape with other lock cylinders in the company, and can be adapted to most lock shells; 5. Corrosion resistance and durability: The stainless steel pipe 7 and lock cylinder shell 4, combined with N35 permanent magnets, ensure corrosion resistance and magnetic performance stability during long-term use. As a preferred embodiment, the following improvements are also provided: the potting sealant can be epoxy resin or polyurethane adhesive, the former has high hardness and is suitable for high-strength fixing, while the latter has good elasticity and is more impact-resistant; a nylon washer can be added to the contact surface between the headless screw 12 and the positioning groove of the lock cylinder shell 4 to prevent the screw from loosening due to long-term vibration; a wear-resistant stainless steel sheet can be inlaid at the contact part between the lock cylinder cover plate 10 and the key handle to improve service life.

[0019] Assembly relationships and working principles: Drive and anti-interference mechanism: The solenoid coil 6 is placed in the positioning groove of the lock cylinder shell 4, the steel tube 7 passes through the central hole of the solenoid coil 6 and is fixed, and two permanent magnets 5 are respectively placed in the grooves at both ends of the steel tube 7, and the two are resisted by a compressed spring 8. The lock cylinder shell 4 is made of non-magnetic stainless steel. See locked state Figure 4 , Figure 5 When the solenoid coil 6 is not energized, the elastic force of the spring 8 pushes the two permanent magnets 5 apart to both ends, so that the permanent magnets 5 come into contact with the limiting structure of the lock cylinder shell 4, and the lock cylinder cannot rotate. See unlock status Figure 6 After the authorized electronic key is inserted, it is powered through the positive pin 1. The main board 3 controls the solenoid coil 6 to be energized, generating a magnetic field. This magnetic field generates an attractive force on the two permanent magnets 5 towards the middle of the steel pipe 7. When the attractive force is greater than the elastic force of the spring 8, the two permanent magnets 5 are pulled towards the middle, releasing the restriction on the lock cylinder shell 4. At this time, turning the key will unlock the lock. Anti-interference: If an external strong magnet attempts to attract one end of the permanent magnet 5 and keep it in the attracted state, the elastic force of the spring 8 will resist the magnetic force; if it attempts to repel one end and make it retract, since the two magnets are linked and there is a spring in the middle, the single repulsive force is difficult to overcome the overall structure, thus preventing malicious unlocking. Status detection mechanism: Hall effect devices are integrated on the main board 3, and a permanent magnet 11 is fixed on the corresponding position on the outside of the lock cylinder shell 9. When the lock cylinder shell 4 rotates to unlock or resets to lock relative to the lock cylinder shell 9, the relative position of the Hall effect devices on the main board 3 and the permanent magnet 11 changes, generating a corresponding change in the level signal. The main board 3 records the signal and can upload it to the electronic key through the positive pin 1 communication pin to inform the background whether the lock cylinder is currently in the "unlocked" or "locked" state. Electrical and grounding optimization: Two positive pins 1 are insulated from the lock cylinder shell 4 through the probe sleeve 2 and connected to the main board 3. The lead wire of the solenoid coil 6 is soldered to the main board 3. The side of the main board 3 is provided with a side-soldering ground probe, which is directly soldered to the lock cylinder shell 4. This not only achieves a stable installation of the main board, but also provides a stable, low-impedance grounding loop, avoiding communication failures caused by poor contact. Protection and Assembly: After the lock cylinder is assembled, all internal gaps are filled with electronic sealant. After the sealant is applied, the solenoid coil 6 is completely fixed, and its wires will not break due to vibration or rotational friction. At the same time, the overall waterproof performance is excellent. The bottom of the lock cylinder shell 4 is limited to the lock cylinder shell 9 by the headless screw 12 to prevent the lock cylinder from moving axially or falling off. The lock cylinder cover plate 10 locks the key handle after the key is inserted into place, ensuring that the key will not be accidentally pulled out during the entire unlocking process, thereby ensuring continuous and stable communication.

[0020] Brief description of installation and operation methods: Installation: Mount the main board 3 onto the lock cylinder shell 4 using the side-welded ground probe; insert the positive electrode pin 1 into the probe sleeve 2 and connect it to the main board 3; place the solenoid coil 6 in the positioning groove, hammer it into the steel pipe 7 for fixation, and solder the coil lead to the main board 3; install the permanent magnet 5, spring 8, and the other end of the permanent magnet 5 into the steel pipe 7 in sequence; install the assembled components into the lock cylinder shell 9 and limit them with headless screws 12; fix the sensing permanent magnet 11 to the hole corresponding to the Hall element in the shell with metal glue; cover the lock cylinder cover plate 10; finally, perform overall potting and curing.

[0021] Unlocking: Insert the authorized electronic key. The key communicates with the lock cylinder and is powered. After successful recognition, it prompts you to turn the key. The solenoid coil 6 is energized, and the two permanent magnets 5 are attracted. Turn the key to complete the mechanical unlocking. After waiting 2-3 seconds for the status data to be uploaded, remove the key.

[0022] Locking: Turn the key back to the initial position, de-energize the solenoid coil 6, and spring 8 will push the permanent magnet 5 away to restore the limit position; after the locking state is uploaded, remove the key.

[0023] Strong resistance to magnetic field interference: A spring is set between the two permanent magnets. When an external strong magnet attempts to attract or repel a single permanent magnet, the spring force provides a counteracting force, effectively preventing illegal unlocking caused by malicious magnet attacks and greatly improving security. Real-time status detection: Through the cooperation of Hall element and inductive permanent magnet, the status of the lock cylinder can be detected in real time during the unlocking and locking process and uploaded to the electronic key or management backend, realizing intelligent management of locks; High protection level IP68: The entire system adopts a potting and sealing process, and the solenoid coil and internal electronic components are completely cured, which solves the problem that traditional solenoid moving parts cannot be waterproofed, and can adapt to harsh environments such as outdoor humidity and water immersion. Stable communication and power supply: The dual positive pin power supply and communication design improves unlocking response efficiency and data transmission stability. The side-welded ground probe ensures grounding continuity and strengthens the structural stability of the motherboard. Reliable wire protection: The lock cylinder housing and positioning groove constrain the coil lead and are fixed with potting glue, avoiding the problem of the coil lead breaking due to friction between the coil and the housing caused by frequent operation; Simple structure and low cost: Compared with motor drive solutions, the present invention has fewer structural parts, simpler assembly process, suitable for mass production, and modular design can be adapted to various existing lock shells.

[0024] Although embodiments of the present invention have been shown and described, it should be understood that the scope of protection of the present invention is not limited to the specific embodiments disclosed. Variations, modifications, substitutions, and modifications can be made without departing from the principles of the present invention. For example, the driving method of the solenoid 6 can be a micro motor combined with a cam mechanism instead of an electromagnetic attraction method to achieve the same locking pin driving function. The material of the lock cylinder shell 4 can be copper alloy or high-strength engineering plastic instead of stainless steel to meet different cost or weight requirements. The status detection component can be a micro switch or a photoelectric sensor instead of a combination of Hall effect devices and induction permanent magnets to achieve non-contact detection of the lock cylinder position. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dual-contact passive electronic lock cylinder capable of detecting the status of the lock cylinder, comprising a main board (3), a lock cylinder shell (4) and a lock cylinder outer shell (9); The main board (3) is mounted on the outer wall of the lock cylinder shell (4), and the lock cylinder shell (4) is inserted into the lock cylinder outer shell (9); characterized in that, It also includes a solenoid drive assembly, a positive terminal plug (1) for a condition monitoring assembly, and a probe sleeve (2). The solenoid drive assembly includes a first permanent magnet (5), a solenoid coil (6), a steel tube (7), a spring (8), and a second permanent magnet (13); The steel pipe (7) is fixedly inserted inside the coil (6); The first permanent magnet (5) and the second permanent magnet (13) are slidably installed inside the two ends of the steel pipe (7); The spring (8) is located in the middle of the steel tube (7), and the two ends of the spring (8) abut against the first permanent magnet (5) and the second permanent magnet (13) respectively. The status monitoring component includes a Hall element mounted on the main board (3) and a permanent magnet (11) fixedly mounted on the outside of the lock cylinder housing (9). Two sets of positive pins (1) are inserted and fixed on the probe sleeve (2). The two sets of positive pins (1) are used for power supply and communication, respectively. The probe sleeve (2) is installed on the main board (3). The probe sleeve (2) is used to insulate the positive electrode pin (1) from the lock core shell (4). The main board (3) is equipped with a side-welded ground probe, which is grounded in contact with the lock cylinder shell (4).

2. A dual-contact passive electronic lock cylinder capable of detecting the state of the lock cylinder as described in claim 1, characterized in that, It also includes a lock cylinder cover plate (10); The lock cylinder cover (10) is installed on the top of the lock cylinder shell (4).

3. A dual-contact passive electronic lock cylinder capable of detecting the lock cylinder status as described in claim 1, characterized in that, It also includes headless screws (12); The bottom of the lock cylinder shell (4) is provided with a positioning groove, and the headless screw (12) is screwed onto the lock cylinder shell (9), with the end of the headless screw (12) inserted into the positioning groove of the lock cylinder shell (4).

4. A dual-contact passive electronic lock cylinder capable of detecting the lock cylinder status as described in claim 1, characterized in that, The lock cylinder shell (4) has a positioning groove inside for accommodating the helical coil (6), and the entire lock cylinder shell (9) is filled with sealant.

5. A dual-contact passive electronic lock cylinder capable of detecting the lock cylinder status as described in claim 1, characterized in that, The frame of the solenoid (6) is made of a non-magnetic material, specifically aluminum alloy. The copper wire wound on the solenoid (6) is enameled wire, and a transparent protective sleeve is provided on the outside.

6. A dual-contact passive electronic lock cylinder capable of detecting the lock cylinder status as described in claim 1, characterized in that, The lock cylinder shell (4) side plate is provided with multiple positioning holes.

7. A dual-contact passive electronic lock cylinder capable of detecting the state of the lock cylinder as described in claim 1, characterized in that, The steel pipe (7) is a stainless steel pipe, the lock core shell (4) is made of stainless steel, and the first permanent magnet (5) and the second permanent magnet (13) are N35 permanent magnets.

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