Passive smart padlock

Abstract

The utility model discloses a kind of passive intelligent padlocks, comprising: padlock and the lock cylinder assembly in its shell, lock cylinder assembly is by lock cylinder shell, motor, carousel, reset spring, lock bar and lever, motor is connected with carousel, reset spring is sleeved between the two, carousel has cylindrical recess, lock cylinder inner wall is equipped with detent groove, lock bar and two respectively form sliding limit cooperation and selective clamping structure. Padlock is also provided with lock beam and lock slider, lever is arranged above carousel, and its movement track and lock slider movable path intersect. When unlocking, motor drives carousel to rotate, lock bar will separate from detent groove and slide into cylindrical recess, lever is pushed to lock slider to separate from lock beam by means of lever;After power off, reset spring drives carousel to reset, lock bar resets and re-clamps with detent groove, to realize the function of convenient and reliable unlocking, locking.

Description

Technical Field

[0001] This utility model relates to the field of smart locks, specifically a passive smart padlock. Background Technology

[0002] Traditional padlocks require carrying multiple keys, which is cumbersome and prone to confusion. While electronic padlocks offer convenience, they are expensive, require regular battery replacement or charging, increasing maintenance costs, and cannot be unlocked when the power is depleted. Therefore, there is an urgent need for a padlock that does not require an internal power source, can be unlocked via an external drive, and has a mechanical reset function to solve the above problems. Utility Model Content

[0003] This utility model aims to overcome the shortcomings of existing padlocks in terms of use, function, and security, and provides a passive intelligent padlock, which includes a padlock body and a lock cylinder assembly disposed within the padlock body. The lock cylinder assembly includes a lock cylinder housing, inside which are a motor, a turntable, a return spring, a locking rod, and a lever. The motor is connected to the turntable via a drive shaft, and the return spring is sleeved between the motor and the turntable. The turntable has a cylindrical groove, and the inner wall of the lock cylinder housing has a locking groove. The locking rod and the locking groove form a sliding limit engagement, and the tail of the locking rod forms a selective engagement structure with the cylindrical groove. The padlock body also has a movable lock beam and a lock slider movably connected to the lock beam. The lever is fixedly disposed above the turntable, and the movement trajectory of the lever intersects the movement path of the lock slider.

[0004] When unlocking is required, insert the electronic key into the padlock, then input the command through the button on the electronic key, and the motor will drive the turntable to rotate. At this time, turning the electronic key will cause the lock bar to disengage from the locking slot and slide into the cylindrical groove, thereby releasing the mechanical limit of the lock cylinder. Then, when the electronic key is turned, it will drive the lever to rotate synchronously, and the lever will push the lock slider to disengage from the lock beam, thus completing the unlocking operation.

[0005] When the key is removed and the power is cut off, the reset spring will drive the turntable to rotate and reset, causing the lock bar to return to the initial locking position and re-engage with the locking slot, thus completing the locking action.

[0006] Through this overall design, the passive smart padlock effectively makes up for the shortcomings of existing padlocks in terms of functionality, ease of use, and security, meets diverse usage needs, aligns with the current requirements for padlock product development, and brings users a better and more reliable user experience.

[0007] This application provides a passive smart padlock, including:

[0008] Padlock and lock cylinder assembly housed within the padlock housing;

[0009] The lock cylinder assembly includes a lock cylinder housing, and a motor, a turntable, a return spring, a lock rod, and a lever disposed inside the lock cylinder housing. The drive shaft of the motor is connected to the turntable, the return spring is sleeved between the motor and the turntable, a cylindrical groove is provided on the turntable, a locking groove is provided on the inner wall of the padlock housing, the head of the lock rod forms a sliding limit fit with the locking groove, and the tail of the rod forms a selective engagement structure with the cylindrical groove.

[0010] The padlock also features a lock beam and a lock slider that is movably connected to the lock beam;

[0011] The lever is fixedly mounted above the turntable, and the movement trajectory of the lever intersects with the movement path of the locking slider;

[0012] The motor drives the turntable to rotate, causing the locking rod to disengage from the locking slot and slide into the cylindrical groove to release the mechanical limit. Then, the lever pushes the lock slider to disengage from the lock beam to complete the unlocking. After the power is cut off, the return spring drives the turntable to rotate and reset, causing the locking rod to return to the initial locking position and re-engage with the locking slot to complete the locking.

[0013] Furthermore, a limiting protrusion is provided on the top of the turntable, and a first groove is correspondingly provided on the lock cylinder housing to be movably connected to the limiting protrusion. The limiting protrusion rotates within the first groove. When the motor drives the turntable to rotate until the limiting protrusion is blocked by the side wall of the first groove, the cylindrical groove on the turntable is precisely aligned with the tail of the lock rod.

[0014] Furthermore, the return spring is a compression spring. When the motor is powered on and drives the turntable to rotate, the return spring is compressed and stores energy.

[0015] When the power is off, the reset spring releases its elastic potential energy, causing the turntable to rotate in the opposite direction to reset, so that the tail of the locking rod disengages from the cylindrical groove and slides back into the locking slot, thus locking the device.

[0016] Furthermore, the lock cylinder housing is also provided with a guide groove that is movably connected to the lock rod. A lock rod spring is provided in the guide groove and sleeved on the lock rod. One end of the guide groove is connected to the locking groove and the other end is connected to the cylindrical groove. The rod head of the lock rod is set with a beveled structure, and the groove wall of the locking groove is correspondingly set with a beveled groove wall.

[0017] When the turntable rotates the cylindrical groove to connect with the guide groove and align with the tail of the locking rod, the tail of the locking rod slides into the cylindrical groove along the guide groove under the action of the inclined surface, and squeezes the locking rod spring to release the mechanical limit;

[0018] When the power is cut off and the lock is reset, the head of the locking rod slides back into the locking groove along the guide groove under the thrust of the reset spring and the locking rod spring, and is locked.

[0019] Furthermore, the padlock also includes a lock slider spring disposed within the padlock housing, and a second groove is provided on the lock beam;

[0020] One end of the lock slider spring is connected to the inner wall of the padlock housing, and the other end is connected to the lock slider. The slider is movably connected to the second groove.

[0021] The end trajectory of the lever intersects perpendicularly with the lateral movement path of the locking slider. When the turntable rotates until the cylindrical groove aligns with the locking lever, the lever pushes the locking slider to compress the locking slider spring, causing the locking slider to disengage from the second groove.

[0022] Furthermore, the padlock also includes a lock beam spring and a lock beam limiting pin, and the lock beam also has a third groove;

[0023] The locking beam is connected to the padlock via a locking beam spring, and the locking beam limit pin is located in the third groove.

[0024] When the lock slider disengages from the second groove, the lock beam springs upward under the action of the lock beam spring until the lock beam limit pin abuts against the bottom of the lower groove of the third groove, thus unlocking the lock.

[0025] Furthermore, the lock cylinder assembly also includes a copper pin PCB board, a soldering pin, and a motor PCB board. The motor PCB board is soldered to the motor, and the copper pin PCB board is electrically connected to the motor PCB board through the soldering pin.

[0026] Furthermore, the lock cylinder assembly also includes a copper needle insulating sleeve and three copper needles. The copper needle insulating sleeve is located at the bottom of the lock cylinder housing, and the three copper needles are spaced apart on the copper needle insulating sleeve and electrically connected to the copper needle PCB board.

[0027] Furthermore, the bottom of the lock cylinder housing is also equipped with a key slot that surrounds the copper needle insulation sleeve.

[0028] Furthermore, the padlock also includes a bottom cover and an O-ring. The O-ring is located at the bottom interface between the lock cylinder housing and the padlock housing. The bottom of the padlock housing is provided with a sliding groove, and the bottom cover is slidably connected to the sliding groove.

[0029] In summary, this utility model has the following advantages compared with the prior art:

[0030] (1) The passive intelligent padlock of this utility model gets rid of the dependence on the built-in power supply. Unlike electronic padlocks, it does not have to worry about battery life and the problem of not being able to unlock due to power failure in remote areas or unattended environments. It greatly reduces the cost of use and maintenance workload, making it more worry-free and convenient to use. It can be well applied to various different usage scenarios.

[0031] (2) Through a unique lock cylinder component design, the motor, turntable, return spring, lock rod, and lever work together. During unlocking, the motor drives the turntable to rotate due to the unlocking command sent by the electronic key. Continuing to turn the electronic key allows the lock rod to precisely disengage from the locking slot and slide into the cylindrical groove. After releasing the mechanical limit, the lever pushes the lock slider away from the lock beam. The entire unlocking process is smooth and efficient, achieving convenient unlocking and meeting the user's need for quick unlocking. After a power outage, the return spring reliably drives the turntable to rotate and reset, allowing the lock rod to return to its initial locking position and re-engage with the locking slot. This robust automatic reset locking mechanism effectively avoids safety hazards caused by the inability to automatically reset after an accidental power outage or abnormal operation, ensuring the safety of property. Compared to most existing padlocks, this offers a significant advantage in this regard.

[0032] (3) The copper pin PCB board, welding pin, motor PCB board, copper pin insulation sleeve and three copper pins installed in the lock cylinder assembly form a stable and reasonable circuit connection structure. When driven by the external drive, the power supply can be realized, which not only ensures the power supply when unlocking, but also avoids a series of drawbacks brought by the built-in power supply, so that the padlock can work better with the external drive and improve the overall practicality and functionality.

[0033] (4) The padlock is equipped with components such as the lock slider spring, lock beam spring and lock beam limit pin, which further optimizes the linkage mechanism of unlocking, making the action between each component more closely and smoothly connected. From the movement of the lock slider to the pop-up of the lock beam, each step is precise and orderly, ensuring that the unlocking action is completed in one go, and further enhancing the convenience and reliability of unlocking.

[0034] (5) The bottom cover and O-ring on the padlock enhance the overall sealing of the padlock, effectively preventing external moisture and dust from entering the padlock and reducing the possibility of damage to components due to environmental factors. Compared with electronic padlocks that have high environmental requirements, poor moisture and dust protection and are prone to failure, the passive intelligent padlock of this utility model can better adapt to various complex environments, extend its service life and ensure long-term stable performance. Attached Figure Description

[0035] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0036] Figure 1 This is a first schematic diagram of the passive intelligent padlock provided by this utility model when it is locked.

[0037] Figure 2 A schematic diagram of the passive intelligent padlock provided by this utility model when it is locked;

[0038] Figure 3A schematic diagram of the passive intelligent padlock provided by this utility model when unlocking;

[0039] Figure 4 Exploded view of the lock cylinder assembly provided by this utility model;

[0040] Figure 5 Structural diagram of the copper needle and copper needle insulating sleeve provided by this utility model;

[0041] Figure 6 This is a structural diagram of the cylindrical groove and the limiting protrusion provided by this utility model;

[0042] Figure 7 The structural diagram of the first groove and the guide groove provided by this utility model.

[0043] Attachment title:

[0044] 1-Padlock; 2-Lock slider; 3-Lock slider spring; 4-Lock beam; 5-Second groove; 6-Lock beam spring; 7-Lock beam limit pin; 8-Third groove; 9-Key slot; 10-O-ring; 11-Bottom cover; 1201-Lock cylinder housing; 1202-Motor; 1203-Turntable; 1204-Reset spring; 1205-Lock bar; 1206-Toggle lever; 1207-Cylindrical groove; 1208-Positioning groove; 1209-Limiting protrusion; 1210-First groove; 1211-Guide groove; 1212-Copper pin PCB board; 1213-Welding pin; 1214-Motor PCB board; 1215-Copper pin insulating sleeve; 1216-Copper pin; 1217-Lock bar spring. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0046] In the description of this utility model, 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", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are 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, and therefore should not be construed as a limitation of this utility model.

[0047] 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 utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0048] In this utility model, 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 utility model according to the specific circumstances.

[0049] 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.

[0050] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are 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 this utility model.

[0051] In the following description, suffixes such as "module," "part," "component," or "unit" are used only for the purpose of describing this utility model and have no specific meaning in themselves. Therefore, they can be used in combination.

[0052] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0053] According to one embodiment of the present invention, such as Figures 1 to 7 As shown, a passive smart padlock includes:

[0054] Padlock 1 and a lock cylinder assembly disposed within the housing of padlock 1;

[0055] The lock cylinder assembly includes a lock cylinder housing 1201, and a motor 1202, a turntable 1203, a return spring 1204, a lock rod 1205, and a lever 1206 disposed inside the lock cylinder housing 1201. The drive shaft of the motor 1202 is connected to the turntable 1203. The return spring 1204 is sleeved between the motor 1202 and the turntable 1203. A cylindrical groove 1207 is provided on the turntable 1203. A locking groove 1208 is provided on the inner wall of the padlock housing 1. The rod head of the lock rod 1205 forms a sliding limiting engagement with the locking groove 1208, and its rod tail forms a selective engagement structure with the cylindrical groove 1207.

[0056] The padlock 1 is also provided with a lock beam 4 and a lock slider 2 that is movably connected to the lock beam 4;

[0057] The lever 1206 is fixedly mounted above the turntable 1203, and the movement trajectory of the lever 1206 intersects with the movement path of the locking slider 2;

[0058] The motor 1202 drives the turntable 1203 to rotate, causing the locking rod 1205 to disengage from the locking groove 1208 and slide into the cylindrical groove 1207 to release the mechanical limit. Then, the lever 1206 pushes the lock slider 2 to disengage from the lock beam 4 to complete the unlocking. After the power is cut off, the return spring 1204 drives the turntable 1203 to rotate and reset, so that the locking rod 1205 returns to the initial locking position and re-engages with the locking groove 1208 to lock, thus completing the locking.

[0059] In this embodiment, when unlocking is required, the externally compatible electronic key is first inserted into the lock cylinder housing 1201 of the padlock 1 to power the motor 1202 in conjunction with the lock cylinder assembly. Then, after inputting the unlocking command through the button on the electronic key, the motor 1202 starts to run and drives the connected turntable 1203 to rotate. During the rotation, since the cylindrical groove 1207 on the turntable 1203 has a selective engagement structure with the tail of the locking rod 1205, when the turntable 1203 rotates to its maximum limit, the cylindrical groove 1207 connects with the locking groove 1208 (i.e., the cylindrical groove 1207 is aligned with the tail of the locking rod 1205). At this time, continuing to rotate the electronic key will cause the locking rod 1205 to gradually disengage from the locking groove 1208 and then slide into the cylindrical groove 1207 of the turntable 1203 along the corresponding path, thus releasing the original mechanical limit state. As the electronic key continues to rotate, the lever 1206 inside the lock cylinder housing 1201 also rotates synchronously. Since the movement trajectory of the lever 1206 intersects with the movement path of the lock slider 2, when the lever 1206 rotates to the corresponding position, it pushes the lock slider 2, causing it to overcome the connection restriction between itself and the lock beam 4 until it disengages from the lock beam 4, thus completing the unlocking action. Throughout the process, the components work closely together, achieving a convenient and reliable unlocking operation and meeting the user's need to quickly open the padlock. When the external drive ends, that is, after the power is cut off, the return spring 1204 will rely on its own elastic potential energy to drive the turntable 1203 to rotate in the opposite direction to reset, so that the lock lever 1205 can return to the initial locked position. The outer wall of the cylindrical groove 1207 will abut against the tail of the lock lever 1205, so that the lock lever 1205 re-engages with the locking groove 1208 to ensure that the padlock returns to a safe closed state, avoiding the situation of accidental unlocking and effectively protecting the safety of property.

[0060] In one possible implementation, a limiting protrusion 1209 is provided on the top of the turntable 1203, and a first groove 1210 correspondingly opened on the lock cylinder housing 1201 is movably connected to the limiting protrusion 1209. The limiting protrusion 1209 rotates within the first groove 1210. When the motor 1202 drives the turntable 1203 to rotate until the limiting protrusion 1209 is blocked by the side wall of the first groove 1210, the cylindrical groove 1207 of the turntable 1203 is precisely aligned with the tail of the lock rod 1205.

[0061] In this embodiment, as the motor 1202 drives the turntable 1203 to rotate, the limiting protrusion 1209 on the top of the turntable 1203 rotates within the corresponding first groove 1210 of the lock cylinder housing 1201. The first groove 1210 provides excellent guidance and limiting for the limiting protrusion 1209. As the turntable 1203 continues to rotate, when the limiting protrusion 1209 rotates to a position blocked by the side wall of the first groove 1210, it means that the turntable 1203 has rotated to a precise angle. At this angle, the cylindrical groove 1207 on the turntable 1203 can precisely align with the tail of the lock rod 1205, thus ensuring that the lock rod 1205 can smoothly slide from the original locking groove 1208 into the cylindrical groove 1207. This precise limiting and matching design greatly improves the accuracy and reliability of the unlocking action, avoiding unlocking failure or malfunction due to positional deviations, making the entire unlocking process more stable and smooth.

[0062] In one possible implementation, the reset spring 1204 is a compression spring. When the motor 1202 is energized and drives the turntable 1203 to rotate, the reset spring 1204 is compressed and stores energy.

[0063] When the power is off, the reset spring 1204 releases its elastic potential energy to drive the turntable 1203 to rotate in the opposite direction and reset, causing the tail of the locking rod 1205 to disengage from the cylindrical groove 1207 and slide back into the locking groove 1208, thereby achieving locking.

[0064] In this embodiment, when the motor 1202 is energized and drives the turntable 1203 to rotate, the return spring 1204, which is sleeved between the motor 1202 and the turntable 1203, is gradually compressed under the rotation of the turntable 1203, converting external electrical energy into its own elastic potential energy and storing it. When the external electronic key stops supplying power (i.e., power is cut off), the elastic potential energy stored in the return spring 1204 is immediately released, generating a reverse force to push the turntable 1203 to rotate in the opposite direction and reset. During this process, the tail of the locking rod 1205, which was originally stuck in the cylindrical groove 1207, gradually disengages from the cylindrical groove 1207 under the action of the turntable 1203, and then slides back into the locking slot 1208 along the corresponding path, realizing the locking state of the padlock. By utilizing this elastic potential energy, it is ensured that the padlock can automatically and reliably return to the locked state after power failure, providing a strong guarantee for the security of the padlock.

[0065] In one possible implementation, the lock cylinder housing 1201 is further provided with a guide groove 1211 that is movably connected to the lock rod 1205. A lock rod spring 1217 sleeved on the lock rod 1205 is provided in the guide groove 1211. One end of the guide groove 1211 is connected to the locking groove 1208, and the other end is connected to the cylindrical groove 1207. The rod head of the lock rod 1205 is set as a beveled structure, and the groove wall of the locking groove 1208 is correspondingly set as a beveled groove wall.

[0066] When the turntable 1203 drives the cylindrical groove 1207 to rotate until it communicates with the guide groove 1211 and aligns with the tail of the locking rod 1205, the tail of the locking rod 1205 slides into the cylindrical groove 1207 along the guide groove 1211 under the action of the inclined surface, and squeezes the locking rod spring 1217 to release the mechanical limit.

[0067] When the power is off and the device is reset, the head of the locking rod 1205 slides back to the locking groove 1208 along the guide groove 1211 under the thrust of the reset spring 1204 and the locking rod spring 1217, and is locked.

[0068] In this embodiment, during the unlocking process, when the turntable 1203 rotates the cylindrical groove 1207 to connect with the guide groove 1211 and precisely align with the tail of the locking rod 1205, the locking rod 1205 has a beveled head, and the corresponding groove wall of the locking groove 1208 is also beveled. This beveled fit allows the locking rod 1205 to slide more smoothly into the cylindrical groove 1207 along the guide groove 1211, thus successfully releasing the mechanical limit and ensuring smooth unlocking. When power is cut off and the locking needs to be reset, the push force generated by the release of elastic potential energy by the reset spring 1204, combined with the push force generated by the recovery deformation of the locking rod spring 1217, acts together on the locking rod 1205, allowing the locking rod 1205 head to slide stably back into the locking groove 1208 along the guide groove 1211, achieving precise locking. This dual spring mechanism further optimizes the unlocking and locking actions, improving the reliability and stability of the entire process.

[0069] In one possible implementation, the padlock 1 further includes a lock slider spring 3 disposed within the housing of the padlock 1, and a second groove 5 is provided on the lock beam 4;

[0070] One end of the lock slider spring 3 is connected to the inner wall of the padlock 1 housing, and the other end is connected to the lock slider 2. The slider is movably connected to the second groove 5.

[0071] The end movement trajectory of the lever 1206 intersects perpendicularly with the lateral movement path of the locking slider 2. When the turntable 1203 rotates to the point where the cylindrical groove 1207 is aligned with the locking lever 1205, the lever 1206 pushes the locking slider 2 to compress the locking slider spring 3, causing the locking slider 2 to disengage from the second groove 5.

[0072] In this embodiment, when the unlocking command is input using the electronic key, the motor 1202 drives the turntable 1203 to rotate to its maximum limit (i.e., the cylindrical groove 1207 is aligned with the lock bar 1205). At this time, the electronic key lever 1206 also rotates. Because the movement trajectory of the end of the lever 1206 intersects perpendicularly with the lateral movement path of the lock slider 2, the lever 1206 will contact the lock slider 2 and apply a pushing force, pushing the lock slider 2 to move along the direction of its active connection with the second groove 5. At the same time, it compresses the lock slider spring 3, gradually compressing it. When the pushing force is large enough, the lock slider 2 completely disengages from the second groove 5, creating conditions for subsequent unlocking actions such as the springing of the lock beam 4. The lock slider spring 3 plays a buffering and auxiliary reset role here, ensuring that the movement of the lock slider 2 is more stable, making the entire unlocking linkage smoother and more reliable.

[0073] In one possible implementation, the padlock 1 further includes a lock beam spring 6 and a lock beam limiting pin 7, and the lock beam 4 is also provided with a third groove 8;

[0074] The locking beam 4 is connected to the padlock 1 via the locking beam spring 6, and the locking beam limiting pin 7 is disposed in the third groove 8;

[0075] When the lock slider 2 disengages from the second groove 5, the lock beam 4 springs upward under the action of the lock beam spring 6 until the lock beam limiting pin 7 abuts against the bottom of the lower groove of the third groove 8, thereby unlocking.

[0076] In this embodiment, once the lock slider 2 disengages from the second groove 5, the previously restricted lock beam 4 is no longer constrained. At this time, because the lock beam 4 is connected to the padlock 1 through the lock beam spring 6, the lock beam spring 6 exerts its elasticity, generating an upward elastic force to push the lock beam 4 upward. To prevent the lock beam 4 from continuing to rise, the lock beam limiting pin 7 in the third groove 8 of the lock beam 4 plays a limiting role. When the lock beam limiting pin 7 abuts against the bottom of the lower groove of the third groove 8, the lock beam stops rising. This design ensures the stability and robustness of the entire lock body structure.

[0077] In one possible implementation, the lock cylinder assembly further includes a copper pin PCB board 1212, a solder pin 1213, and a motor PCB board 1214. The motor PCB board 1214 is soldered to the motor 1202, and the copper pin PCB board 1212 is electrically connected to the motor PCB board 1214 through the solder pin 1213.

[0078] In one possible implementation, the lock cylinder assembly further includes a copper needle insulating sleeve 1215 and three copper needles 1216. The copper needle insulating sleeve 1215 is disposed at the bottom of the lock cylinder housing 1201, and the three copper needles 1216 are spaced apart on the copper needle insulating sleeve 1215 and electrically connected to the copper needle PCB board 1212.

[0079] In this embodiment, when the padlock needs to be unlocked externally, the external driving device (such as a special electronic key) contacts the copper pin 1216 at the bottom of the lock cylinder housing 1201. The copper pin 1216, through its electrical connection with the copper pin PCB board 1212, transmits external electrical energy via the solder pin 1213 to the motor PCB board 1214, thereby providing power to the motor 1202 and enabling it to operate normally and initiate subsequent unlocking actions. The copper pin insulating sleeve 1215 provides excellent insulation protection, preventing electrical faults such as short circuits between copper pins 1216 or between copper pins 1216 and other components. This ensures the safety and stability of the entire circuit connection, guaranteeing accurate and reliable power transmission to the motor 1202 and providing strong power support for the normal unlocking function of the padlock.

[0080] In one possible implementation, the bottom of the lock cylinder housing 1201 is also provided with a key slot 9 that surrounds the copper needle insulating sleeve 1215.

[0081] In this embodiment, the presence of the key slot 9 provides a precise docking position for external driving devices (such as electronic keys). During the unlocking operation, the electronic key can be accurately inserted into the key slot 9 and make good contact with the copper needle 1216 inside the copper needle insulating sleeve 1215, ensuring that electrical energy can be smoothly transmitted from the electronic key to the copper needle 1216, thereby realizing the conduction of the entire unlocking circuit.

[0082] In one possible implementation, the padlock 1 further includes a bottom cover 11 and an O-ring 10. The O-ring 10 is disposed at the bottom interface between the lock cylinder housing 1201 and the padlock 1 housing. The bottom of the padlock 1 housing is provided with a sliding groove, and the bottom cover 11 is slidably connected to the sliding groove.

[0083] In this embodiment, the O-ring 10 is located at the bottom interface between the lock cylinder housing 1201 and the padlock 1 housing. Due to its soft and elastic material properties, it fits tightly around the interface, effectively filling any gaps. Regardless of whether the padlock is in a humid outdoor environment or a dusty indoor corner, the O-ring 10 prevents moisture, dust, and other impurities from entering the padlock, providing a good seal, protecting the internal components from corrosion, and extending the padlock's lifespan. Similarly, the bottom cover 11 and the bottom groove of the padlock 1 housing are slidably connected. This prevents impurities such as sand, dust, and moisture from entering the padlock housing; furthermore, when the electronic key needs to be inserted, simply slide open the bottom cover 11, making operation very convenient and simple.

[0084] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A passive intelligent padlock, characterized in that, Includes a padlock and a lock cylinder assembly disposed within the padlock housing; The lock cylinder assembly includes a lock cylinder housing, and a motor, a turntable, a return spring, a lock rod, and a lever disposed inside the lock cylinder housing. The drive shaft of the motor is connected to the turntable, the return spring is sleeved between the motor and the turntable, the turntable has a cylindrical groove, the inner wall of the padlock housing has a locking groove, the head of the lock rod forms a sliding limiting fit with the locking groove, and the tail of the rod forms a selective engagement structure with the cylindrical groove. The padlock is also provided with a lock beam and a lock slider that is movably connected to the lock beam; The lever is fixedly mounted above the turntable, and the movement trajectory of the lever intersects with the movement path of the locking slider; The motor drives the turntable to rotate, causing the locking rod to disengage from the locking slot and slide into the cylindrical groove to release the mechanical limit. Then, the lever pushes the lock slider to disengage from the lock beam to complete the unlocking. After the power is cut off, the return spring drives the turntable to rotate and reset, causing the locking rod to return to the initial locking position and re-engage with the locking slot to complete the locking.

2. The passive intelligent padlock according to claim 1, characterized in that, The top of the turntable is provided with a limiting protrusion, and the lock cylinder housing is provided with a first groove that is movably connected to the limiting protrusion. The limiting protrusion rotates within the first groove. When the motor drives the turntable to rotate until the limiting protrusion is blocked by the side wall of the first groove, the cylindrical groove of the turntable is precisely aligned with the tail of the lock rod.

3. A passive intelligent padlock according to claim 2, characterized in that, The reset spring is a compression spring. When the motor is powered on and drives the turntable to rotate, the reset spring is compressed and stores energy. When the power is off, the reset spring releases its elastic potential energy to drive the turntable to rotate in the opposite direction and reset, causing the tail of the locking rod to disengage from the cylindrical groove and slide back into the locking slot, thus achieving locking.

4. A passive intelligent padlock according to claim 3, characterized in that, The lock cylinder housing is also provided with a guide groove that is movably connected to the lock rod. A lock rod spring is provided in the guide groove and sleeved on the lock rod. One end of the guide groove is connected to the locking groove and the other end is connected to the cylindrical groove. The rod head of the lock rod is set with a beveled structure and the groove wall of the locking groove is correspondingly set with a beveled groove wall. When the turntable rotates the cylindrical groove to communicate with the guide groove and align with the tail of the locking rod, the tail of the locking rod slides into the cylindrical groove along the guide groove under the action of the inclined surface, and squeezes the locking rod spring to release the mechanical limit; When the power is cut off and the lock is reset, the head of the locking rod slides back into the locking groove along the guide groove under the thrust of the reset spring and the locking rod spring, and is locked.

5. A passive intelligent padlock according to claim 4, characterized in that, The padlock also includes a lock slider spring disposed within the padlock housing, and a second groove is provided on the lock beam; One end of the lock slider spring is connected to the inner wall of the padlock housing, and the other end is connected to the lock slider. The slider is movably connected to the second groove. The end movement trajectory of the lever intersects perpendicularly with the lateral movement path of the locking slider. When the turntable rotates to align the cylindrical groove with the locking lever, the lever pushes the locking slider to compress the locking slider spring, causing the locking slider to disengage from the second groove.

6. A passive intelligent padlock according to claim 5, characterized in that, The padlock also includes a lock beam spring and a lock beam limiting pin, and the lock beam is also provided with a third groove; The locking beam is connected to the padlock via a locking beam spring, and the locking beam limiting pin is located in the third groove; When the lock slider disengages from the second groove, the lock beam springs upward under the action of the lock beam spring until the lock beam limiting pin abuts against the bottom of the lower groove of the third groove, thereby unlocking.

7. A passive intelligent padlock according to claim 1, characterized in that, The lock cylinder assembly also includes a copper pin PCB board, a welding pin, and a motor PCB board. The motor PCB board is welded to the motor, and the copper pin PCB board is electrically connected to the motor PCB board through the welding pin.

8. A passive intelligent padlock according to claim 7, characterized in that, The lock cylinder assembly also includes a copper needle insulating sleeve and three copper needles. The copper needle insulating sleeve is disposed at the bottom of the lock cylinder housing, and the three copper needles are spaced apart on the copper needle insulating sleeve and electrically connected to the copper needle PCB board.

9. A passive intelligent padlock according to claim 8, characterized in that, The bottom of the lock cylinder housing is also provided with a key slot that surrounds the insulating sleeve of the copper needle.

10. A passive intelligent padlock according to claim 1, characterized in that, The padlock also includes a bottom cover and an O-ring. The O-ring is located at the bottom interface between the lock cylinder housing and the padlock housing. The bottom of the padlock housing is provided with a sliding groove, and the bottom cover is slidably connected to the sliding groove.

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