An electronic lock

Abstract

The present application provides an electronic lock, and relates to the technical field of electronic locks, which comprises a lock body, a flexible lock beam, a lock tongue, a jacking device and a wireless controller. One end of the flexible lock beam is fixed to the lock body, and the other end is provided with a lock head assembly which can be inserted into a lock hole of the lock body. The jacking device comprises a jacking rod and a lever, the lever can drive the jacking rod to extend out of the lock body and be located between the fixed end of the flexible lock beam and the lock hole. The lock tongue is movably arranged in the lock body and can be selectively clamped with the lock head assembly and the jacking rod, thereby realizing double locking. The wireless controller drives the lock tongue to simultaneously separate from the lock head assembly and the jacking rod after receiving a wireless signal, thereby realizing unlocking. The combination of the flexible lock beam, the lock tongue and the jacking device makes the locking process more secure, can adapt to different caliber of canvas bag mouths, and realizes wireless remote control unlocking, thereby solving the problems of traditional operation, such as complicated operation and low efficiency. The present application is especially suitable for the automatic locking and unlocking of flexible packaging such as canvas bags, and effectively improves the logistics efficiency and reliability.

Description

Technical Field

[0001] This invention relates to the field of electronic lock technology, and more specifically, to an electronic lock. Background Technology

[0002] An electronic lock is an electronic product that uses electronic circuits or microprocessor chips to control the opening and closing of mechanical switches, thereby achieving unlocking and locking functions. They come in a wide variety, ranging from low-end products composed of simple logic circuits to high-end products centered around microcontrollers and capable of implementing various unlocking strategies (such as passwords, fingerprints, and RFID) through complex programming. Currently, chip-controlled electronic locks have become the mainstream in the market due to their advantages of controllability, manageability, and high security.

[0003] In the field of cargo transportation, especially for goods loaded in flexible packaging bags such as canvas bags, the following sealing methods are commonly used to prevent unauthorized access or theft during transport: First, the opening of the canvas bag is tightened using its pull straps or tied with a rope. Then, the opening is sealed with a sealing clip and hooks, forming a latch for a padlock. Finally, a padlock or electronic lock is inserted into the latch to lock the bag. Alternatively, the opening of the canvas bag can be wrapped and sealed with a flexible rope with latches at both ends, and then the padlock is threaded through the latches at both ends of the rope to lock the bag. This combination of "binding + padlock" provides a certain degree of physical security.

[0004] However, this type of lock, which requires manual binding before locking, necessitates both manual unlocking and unbinding to open the bag. This cumbersome process is ill-suited to the growing demands for unmanned and automated processing in modern logistics systems. The fact that each locking and unlocking operation requires manual intervention severely limits logistics efficiency and is extremely inconvenient. Summary of the Invention

[0005] The technical problem this invention aims to solve is that the locking and unlocking process of bag sealing relies entirely on manual operation, resulting in cumbersome procedures, low efficiency, and an inability to achieve unmanned and automated logistics. To overcome the shortcomings of the prior art, this invention provides an electronic lock.

[0006] This invention provides an electronic lock, including a lock body, wherein the lock body has a keyhole, and further comprising:

[0007] A flexible lock beam, one end of which is fixed to the lock body, and the other end is equipped with a lock head assembly that can be inserted into the lock hole;

[0008] The clamping device includes a push rod and a pry bar; the push rod is telescopically disposed inside the lock body, and one end of the push rod can extend out of the lock body and be located between the fixed end of the flexible lock beam and the lock hole; one end of the pry bar is drivenly connected to the push rod, and the other end extends out of the lock body to drive the push rod to extend out of the lock body;

[0009] The latch is movably located inside the lock body. Its first end is used to selectively engage or disengage with the lock cylinder assembly, and its second end is used to selectively engage or disengage with the push rod.

[0010] The wireless controller, located inside the lock body and connected to the bolt drive, is used to receive wireless signals and drive the bolt to disengage its first end from the lock head assembly and its second end from the push rod.

[0011] When the second end of the latch disengages from the push rod, the push rod retracts into the lock body to reset.

[0012] Compared with existing technologies, the electronic lock proposed in this application has the following advantages: the combination of a flexible locking beam, a locking tongue, and a tightening device makes the locking process more secure and prevents loosening. It can adapt to the openings of canvas bags of different diameters and avoids the need for manual operation for locking and unlocking caused by entanglement. After remote unlocking by the wireless controller, the electronic lock can automatically fall from the bag opening under the action of gravity, and the canvas bag opening will open naturally. Unlocking does not require manual operation, improving efficiency and reliability, and making operation convenient.

[0013] In one possible implementation, the latch includes a first pin, a second compression spring, and a locking rod; one end of the first pin is connected to one end of the locking rod via the second compression spring, and the other end of the first pin is selectively engaged or disengaged from the lock head assembly;

[0014] The end of the first tumbler that engages with the lock head assembly has: a first guide surface, which is provided with an opening facing the lock hole, for guiding the inserted lock head to the bottom of the lock hole; and a first engaging surface, which is provided with a bottom facing the lock hole, for engaging with the lock head inserted to the bottom of the lock hole.

[0015] Compared with existing technologies, the split-type latch structure combining the first pin and the second compression spring utilizes the preload of the second compression spring to enable the first pin to automatically compensate and tightly engage with the lock head assembly. This ensures high reliability and anti-loosening capability during locking, while also reducing the rigid impact during latch movement through buffering, thus improving the durability and smoothness of the lock. The end face of the first pin forms a first guide surface and a first engaging surface, allowing the latch to be in a locked state by default. The lock head assembly can be inserted to automatically lock, reducing the need for the wireless controller to send unlock-then-lock commands.

[0016] In one possible implementation, the lock bar is provided with a first rack, the lock body is provided with a motor and a battery, the output end of the motor is fixedly connected to a gear, the gear meshes with the first rack, the motor is electrically connected to a wireless controller, and the power supply end of the wireless controller and the power supply end of the motor are both electrically connected to the battery.

[0017] Compared with existing technologies, the rotational motion of the motor is precisely and efficiently converted into the linear motion of the lock rod by meshing the gear on the output end of the motor with the first rack on the lock rod, thereby driving the bolt to move and realizing the engagement or disengagement of the bolt with the lock head assembly and the top rod. This direct drive method has high transmission efficiency, fast control response and compact and reliable structure. When used in conjunction with a wireless controller, it can realize precise and automated control of the opening and closing of the lock.

[0018] In one possible implementation, the lock body has a plurality of first limiting blocks next to the locking bar to limit the direction of movement and the maximum distance of movement of the locking bar.

[0019] Compared with existing technologies, the first limit block precisely controls the stroke of the locking bar, ensuring that the locking bar can only move in the locking and unlocking directions. This effectively prevents component wear, jamming, or unlocking difficulties caused by excessive engagement, ensuring the stability and reliability of the locking action, and improving the durability and long-term stability of the lock.

[0020] In one possible implementation, the latch further includes a third compression spring and a second pin, one end of the second pin being connected to the other end of the locking rod via the third compression spring; the push rod includes a tightening head and a first tension spring, the tightening head being retractably disposed within the lock body, the top of the tightening head extending out of the lock body, and the bottom of the tightening head being connected to the interior of the lock body via the first tension spring; the side of the tightening head facing the latch is provided with a second rack for selectively engaging or disengaging with the second pin; when the first pin engages with the lock head assembly, the second pin engages with the second rack; when the first pin disengages from the lock head assembly, the second pin disengages from the second rack.

[0021] Compared with existing technologies, the mechanical interlocking of the internal mechanism of the lock body is achieved by the engagement of the second pin and the second rack; the synchronous engagement or disengagement of the first pin and the lock head assembly, and the second pin and the second rack, ensures that the second pin is engaged when the first pin is engaged, thus maintaining the state of the push rod when locking, and that the push rod is reset when unlocking when the first pin is disengaged.

[0022] In one possible implementation, a limiting guide mechanism is provided between the tightening head and the lock body; the limiting guide mechanism includes a travel groove provided on the tightening head and a second limiting block provided in the lock body, the second limiting block being engaged in the travel groove.

[0023] Compared with existing technologies, the combination of the travel groove and the second limit block provides precise guidance and stable limiting for the movement of the clamping head, ensuring the linearity and smoothness of its extension and retraction movements, preventing deflection and jamming, and limiting its safe stroke, effectively avoiding component damage caused by excessive extension or retraction, thereby improving the operational reliability and overall structural strength of the clamping device.

[0024] In one possible implementation, the pry bar includes a pry handle, a fourth compression spring, and a third pin; the lock body is provided with a rotating shaft, the pry handle is rotatably connected to the rotating shaft, one end of the pry handle is connected to the third pin through the fourth compression spring, and the other end of the pry handle extends out of the lock body; the side of the clamping head away from the bolt is provided with a third rack, and the third pin is engaged with the third rack.

[0025] When the pry bar extends from one end of the lock body and moves toward the tightening head, the tightening head extends in a unidirectional step relative to the second and third pins.

[0026] Compared with existing technologies, by combining the lever movement of the pry bar with the third ball and the third rack, the rotational movement of pressing the pry bar is transformed into a stable and gradual lifting of the tightening head, thereby achieving precise and controllable adjustment of the tightening force of the tightening head.

[0027] In one possible implementation, the pry bar further includes a second tension spring, which is located below the pry bar on the side away from the third pin. One end of the second tension spring is fixedly connected to the inside of the lock body, and the other end of the second tension spring is fixedly connected to the side of the pry bar.

[0028] Compared with existing technologies, the added second tension spring provides a reliable automatic reset function for the pry bar, ensuring that the pry bar can quickly return to its original position after each press, which facilitates continuous and efficient lifting operations, thereby significantly improving the convenience of operation and the cyclic operation reliability of the entire tightening device.

[0029] In one possible implementation, the lock head assembly includes: a fastening block fixed to a flexible lock beam; a lock head fixed to the end of the flexible lock beam inserted into the lock hole; and a first compression spring sleeved on the flexible lock beam and located between the fastening block and the lock head, the top end of the first compression spring being fixedly connected to the fastening block; wherein, when the lock head is inserted into the lock hole, the bottom end of the first compression spring is pressed against the lock body.

[0030] Compared with existing technologies, the pre-tension design of the first compression spring continuously applies pressure to the lock head during locking, ensuring a tight and reliable engagement with the bolt and effectively preventing loosening. At the same time, during unlocking, the first compression spring can automatically disengage the lock head from the keyhole, reducing manual operation.

[0031] In one possible implementation, the first compression spring is tapered, and the diameter of the bottom end of the first compression spring is larger than the diameter of the keyhole.

[0032] Compared with existing technologies, the tapered design with a bottom diameter larger than the keyhole diameter allows the bottom of the lock head to press against the lock body after it is inserted into the keyhole. The tapered surface of the first compression spring effectively seals the gap in the keyhole, providing a certain degree of dustproof and waterproof sealing and significantly improving the protection level of the lock. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of an electronic lock in the unlocked state according to the present invention;

[0034] Figure 2 This is a schematic diagram of a flexible lock beam structure of an electronic lock in the locked state according to the present invention;

[0035] Figure 3 This is a schematic diagram of the latch structure of an electronic lock in the locked state according to the present invention;

[0036] Figure 4 This is a schematic diagram of the top rod structure of an electronic lock in the locked state according to the present invention;

[0037] Figure 5 This is a schematic diagram of the pry bar structure of an electronic lock in the locked state according to the present invention;

[0038] Figure 6 This is a schematic diagram of the structure of an electronic lock in the manual tightening state according to the present invention.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1-Flexible lock beam; 11-Fastening block; 12-First compression spring; 13-Lock head; 2-Lock tongue; 21-First pin; 22-Second compression spring; 23-Lock bar; 231-First rack; 24-Third compression spring; 25-Second pin; 3-Motor; 4-Lock body; 41-Lock hole; 42-First limiting block; 43-Tightening hole; 44-Second limiting block; 45-Pry handle movable hole; 46-Rotating shaft; 5-Wireless controller; 6-Push rod; 61-Tightening head; 611-Stroke groove; 612-Second rack; 613-Third rack; 62-First tension spring; 7-Fastener; 8-Pry bar; 81-Pry handle; 82-Second tension spring; 83-Fourth compression spring; 84-Third pin; 9-Battery. Detailed Implementation

[0041] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0042] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0043] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0045] See Figures 1-6 As shown in the figure, this application discloses an electronic lock, including a lock body 4, on which a keyhole 41 is provided; and further including:

[0046] The flexible lock beam 1 has one end fixed to the lock body 4 and the other end provided with a lock head assembly that can be inserted into the lock hole 41;

[0047] The clamping device includes a push rod 6 and a pry bar 8; the push rod 6 is telescopically disposed inside the lock body 4, and one end of it can extend out of the lock body 4 and be located between the fixed end of the flexible lock beam 1 and the lock hole 41; one end of the pry bar 8 is connected to the push rod 6 in a transmission manner, and the other end extends out of the lock body 4, for driving the push rod 6 to extend out of the lock body 4.

[0048] The locking tongue 2 is movably disposed inside the lock body 4. Its first end is used to selectively engage or disengage with the lock head assembly, and its second end is used to selectively engage or disengage with the push rod 6.

[0049] The wireless controller 5 is located inside the lock body 4 and is connected to the bolt 2 in a transmission manner. It is used to receive wireless signals and drive the bolt 2 to disengage its first end from the lock head assembly and its second end from the push rod 6.

[0050] When the second end of the locking tongue 2 disengages from the push rod 6, the push rod 6 retracts into the lock body 4 to reset.

[0051] The combination of the flexible locking beam 1, locking tongue 2, and tightening device makes the locking process more secure, prevents loosening, and can adapt to the openings of canvas bags of different diameters. It avoids the need for manual operation for locking and unlocking caused by the winding mechanism. The wireless controller 5 enables remote unlocking. When unlocking, the flexible locking beam 1 can detach from the lock hole 41, and the electronic lock can automatically fall from the bag opening under the action of gravity, and the canvas bag opening will open naturally. Unlocking does not require manual operation, improving efficiency and reliability, and making operation convenient.

[0052] One end of the flexible lock beam 1 is fixedly connected to one end of the lock body 4 by a fastener 7. The fastener 7 is used to strengthen the connection between the flexible lock beam 1 and the lock body 4.

[0053] In this embodiment, the flexible locking beam 1 can be a steel wire rope or a high-strength polymer rope.

[0054] See Figure 2 As shown, in this embodiment, the lock assembly includes:

[0055] Fastening block 11 is fixed to flexible locking beam 1;

[0056] The lock head 13 is fixed to the end of the flexible lock beam 1 that is inserted into the lock hole 41;

[0057] The first compression spring 12 is sleeved on the flexible locking beam 1 and located between the fastening block 11 and the lock head 13. The top end of the first compression spring 12 is fixedly connected to the fastening block 11.

[0058] When the lock head 13 is inserted into the lock hole 41, the bottom end of the first compression spring 12 abuts against the lock body 4.

[0059] The pre-tightening design of the first compression spring 12 continuously applies pressure to the lock head 13 when locking, ensuring that it is tightly and reliably engaged with the first end of the lock tongue 2, effectively preventing loosening; at the same time, when unlocking, the elastic force of the first compression spring 12 can drive the lock head 13 to automatically disengage from the lock hole 41, reducing manual operation.

[0060] In this embodiment, the first compression spring 12 is conical, and the diameter of the bottom end of the first compression spring 12 is larger than the diameter of the key hole 41. By adopting a conical design with a bottom diameter larger than the diameter of the key hole 41, after the lock head 13 is inserted into the key hole 41, its bottom end forms a pressure contact with the lock body 4. The conical surface characteristics of the first compression spring 12 effectively seal the gap in the key hole 41, playing a certain role in dustproofing and waterproofing, and significantly improving the protection level of the lock.

[0061] See Figure 3 As shown, in this embodiment, the locking tongue 2 includes a first pin 21, a second compression spring 22, and a locking rod 23; one end of the first pin 21 is connected to one end of the locking rod 23 through the second compression spring 22, and the other end of the first pin 21 is selectively engaged or disengaged from the lock head assembly.

[0062] The split-type locking tongue structure, which combines the first pin 21 with the second compression spring 22, utilizes the preload of the second compression spring 22 to enable the first pin 21 to automatically compensate and tightly engage with the lock head assembly. This ensures high reliability and anti-loosening capability when locking, while also reducing the rigid impact of the locking tongue 2 during operation through buffering, thereby improving the durability and smoothness of the lock.

[0063] Among them, the end of the first pin 21 that engages with the lock assembly forms:

[0064] The first guide surface is provided with an opening facing the key hole 41, and is used to guide the inserted lock head 13 to the bottom of the key hole 41;

[0065] The first engaging surface is positioned facing the bottom of the lock hole 41 and is used to engage with the lock head 13 inserted into the bottom of the lock hole 41.

[0066] The end face of the first pin 21 forms a first guide surface and a first engaging surface, which allows the bolt 2 to be in the locked state by default. After the lock head 13 is inserted into the lock hole 41, it will push the first pin 21 to move to the right (towards...). Figure 3 (The location shown in the figure is a reference frame). After the second compression spring 22 is compressed and the lock head 13 is fully inserted into the bottom of the lock hole 41, the first tumbler 21 will extend under the elastic force of the second compression spring 22, and its lower end face will engage with the lock head 13 to achieve locking. After the lock head assembly can be inserted, it will automatically lock, reducing the need for the wireless controller 5 to send unlocking and then locking commands, and reducing manual operation steps.

[0067] In this embodiment, the first guide surface is an inclined surface or a circular arc surface, and the second snap-fit ​​surface is a plane.

[0068] Of course, in actual operation, the latch 2 can be in the unlocked state by default. At this time, there are no requirements for the end of the first pin 21. However, after the lock head 13 is inserted into the bottom of the lock hole 41, the wireless controller 5 needs to send a locking command to lock the device.

[0069] In this design, one end of the first pin 21 is connected to one end of the locking rod 23 via a second compression spring 22. This connection structure is similar to that of a traditional pin tumbler lock. The second compression spring 22 is first fitted onto one end of the locking rod 23, and then the first pin 21 is partially fitted onto one end of the locking rod 23, without completely detaching from the locking rod 23. Finally, one end of the second compression spring 22 is fixedly connected to the locking rod 23, and the other end is fixedly connected to the first pin 21. Under the elastic force of the second compression spring 22, the first pin 21 can extend and retract while fitted onto the locking rod 23.

[0070] In this embodiment, the locking rod 23 is provided with a first rack 231, the lock body 4 is provided with a motor 3, the output end of the motor 3 is provided with a gear, the gear meshes with the first rack 231, and the motor 3 is electrically connected to the wireless controller 5.

[0071] The rotational motion of the motor 3 is precisely and efficiently converted into linear motion of the lock rod 23 by the meshing of the gear on the output end of the motor 3 with the first rack 231 on the lock rod 23, thereby driving the bolt 2 to move and enabling the bolt 2 to engage or disengage from the lock head assembly. This direct drive method has high transmission efficiency, fast control response, and a compact and reliable structure. When used in conjunction with the wireless controller 5, it enables precise and automated control of the lock opening and closing.

[0072] In practical use, to ensure the stable operation of the wireless controller 5 and the motor 3, a battery 9 is also installed inside the lock body 4. The battery 9 is electrically connected to the power supply terminals of the wireless controller 5 and the motor 3, providing stable power to both. The wireless controller 5 integrates a wireless receiving module, a processor, and a motor drive module. After receiving wireless signals through the wireless receiving module, the signals are first processed by the processor, and then the processor controls the motor drive module to drive the motor 3 to run, thereby controlling the latch 2 to engage or disengage from the lock head assembly, thus achieving locking or unlocking.

[0073] To maintain the power of battery 9, lock body 4 is equipped with a Type-C interface. A power control circuit board is located inside lock body 4. The Type-C interface is electrically connected to the power control circuit board, which in turn is electrically connected to battery 9. Battery 9 can be charged by connecting to an external power source via the Type-C interface; it can also be used to monitor the remaining power of battery 9.

[0074] Of course, the battery 9 can also be charged wirelessly. The lock body 4 is equipped with a receiving coil, which is electrically connected to the battery 9 through the power control circuit board.

[0075] The lock body 4 contains multiple first limiting blocks 42 located beside the locking rod 23 to restrict the direction and maximum distance of movement of the locking rod 23. These first limiting blocks 42 precisely control the stroke of the locking rod 23, ensuring that it can only move in the locking and unlocking directions. This effectively prevents wear, jamming, or difficulty in unlocking caused by excessive engagement, ensuring stable and reliable locking action and improving the durability and long-term stability of the lock.

[0076] See Figure 3 As shown, the locking tongue 2 also includes a third compression spring 24 and a second pin 25, one end of which is connected to the other end of the locking rod 23 via the third compression spring 24.

[0077] See Figure 4As shown, the push rod 6 includes a tightening head 61 and a first tension spring 62. The tightening head 61 is telescopically disposed inside the lock body 4. The top of the tightening head 61 can extend out of the lock body 4, and the bottom of the tightening head 61 is connected to the lock body 4 through the first tension spring 62. The side of the tightening head 61 facing the latch 2 is provided with a second rack 612 for selectively engaging or disengaging with the second tumbler 25.

[0078] When the first pin 21 engages with the lock assembly, the second pin 25 engages with the second rack 612; when the first pin 21 disengages from the lock assembly, the second pin 25 disengages from the second rack 612.

[0079] The mechanical interlocking of the internal mechanism of the lock body is achieved by the engagement of the second pin 25 with the second rack 612; the synchronous engagement or disengagement of the first pin 21 with the lock head assembly and the second pin 25 with the second rack 612, such that when the first pin 21 is engaged, the second pin 25 is also engaged, thus maintaining the state of the push rod 6 when locking, and when the first pin 21 is disengaged, the second pin 25 is also disengaged, thus resetting the push rod 6 when unlocking.

[0080] The structure in which the second pin 25 is connected to the locking rod 23 via the third compression spring 24 is the same as the structure in which the first pin 21 is connected to the locking rod 23 via the second compression spring 22.

[0081] Furthermore, a limiting guide mechanism is provided between the tightening head 61 and the lock body 4; the limiting guide mechanism includes a travel groove 611 provided on the tightening head 61 and a second limiting block 44 provided in the lock body 4, the second limiting block 44 being engaged in the travel groove 611.

[0082] The cooperation between the travel groove 611 and the second limit block 44 provides precise guidance and stable limit for the movement of the clamping head 61, ensuring the linearity and smoothness of its extension and retraction movements, preventing deflection and jamming, and limiting its safe travel, effectively avoiding damage to components caused by excessive extension or retraction, thereby improving the operational reliability and overall structural strength of the clamping device.

[0083] See Figure 4 and Figure 5 As shown, the pry bar 8 includes a pry handle 81, a fourth compression spring 83, and a third ball 84.

[0084] The lock body 4 has a rotating shaft 46 inside, and the pry bar 81 is rotatably connected to the rotating shaft 46. One end of the pry bar 81 is connected to the third pin 84 through the fourth compression spring 83, and the other end of the pry bar 81 extends out of the lock body 4. The lock body 4 has a pry bar movable hole 45 for the other end of the pry bar 81 to extend out. The side of the tightening head 61 away from the lock tongue 2 has a third rack 613, and the third pin 84 is engaged with the third rack 613.

[0085] When the pry handle 81 extends from one end of the lock body 4 and moves towards the extension direction of the tightening head 61, the tightening head 61 extends in a unidirectional step relative to the second pin 25 and the third pin 84. Specifically:

[0086] As the pry bar 81 extends from one end of the lock body 4 towards the extension direction of the tightening head 61, the end of the third pin 84 that is engaged with the third rack 613 moves from the current tooth to the next tooth. Simultaneously, the end of the second pin 25 that is engaged with the second rack 612 moves from the current tooth to the next tooth. Then, the pry bar 81 returns to its original position, achieving a one-step extension of the tightening head 61 in one direction. Simultaneously, the engagement of the second pin 25 and the second rack 612 maintains the current state of the tightening head 61. Continuing this action, the tightening head 61 achieves a one-way, step-by-step extension.

[0087] See Figure 3 , Figure 4 and Figure 5 As shown, the third rack 613 has multiple teeth distributed along the extension direction. The longitudinal section of each tooth is a right-angled triangle, which engages with the third ball 84 through one right-angled side. The hypotenuse of the right-angled triangle faces the extension direction of the clamping head 61 to guide the third ball 84 to the next tooth. At the same time, the end of the third ball 84 connected to the third rack 613 matches with the adjacent tooth of the third rack 613 to achieve engagement.

[0088] The second rack 612 and the third rack 613 are symmetrically arranged with respect to the longitudinal axis of the clamping head 61. Each tooth on the second rack 612 is the same as each tooth on the third rack 613.

[0089] The pry handle 81 is rotatable via the pivot 46. By pressing one end of the pry handle 81 extending from the lock body 4, it rotates around the pivot 46, driving the third pin 84 to move along the third rack 613 and engage with the next tooth. Repeating this pressing action can achieve the step-by-step lifting of the locking head 61. During the lifting process, the second pin 25 is also subjected to force, compressing the third compression spring 24, and finally the second pin 25 will engage with the next tooth of the second rack 612.

[0090] Through the lever movement of the pry bar 81, combined with the third pin 84 and the third rack 613, the rotational motion of pressing the pry bar 81 is converted into a stable, step-by-step linear lifting of the tightening head 61, achieving precise and controllable adjustment of the tightening force of the tightening head 61. The buffering effect of the fourth compression spring 83 ensures the smooth and reliable engagement of the third pin 84 and the third rack 613, avoiding damage to components from rigid impacts, and also makes operation less strenuous, improving the durability of the entire tightening device and the user experience.

[0091] The structure in which the third pin 84 is connected to the pry bar 81 via the fourth compression spring 83 is the same as the structure in which the first pin 21 is connected to the locking bar 23 via the second compression spring 22.

[0092] In this embodiment, the pry bar 8 also includes a second tension spring 82. The second tension spring 82 is located below the pry bar 81 on the side away from the third pin 84. One end of the second tension spring 82 is fixedly connected to the lock body 4, and the other end of the second tension spring 82 is fixedly connected to the side of the pry bar 81.

[0093] The added second tension spring 82 provides a reliable automatic reset function for the pry bar 81, ensuring that the pry bar 81 can quickly return to its original position after each press, which facilitates continuous and efficient lifting operations, thereby significantly improving the convenience of operation and the cyclic operation reliability of the entire tightening device.

[0094] The working principle of the electronic lock in this embodiment is as follows:

[0095] See Figures 2-5 As shown, to lock the electronic lock: First, gather and tie the opening of the canvas bag by hand. Then, pass the flexible lock beam 1 around the tied opening and insert the lock head 13 into the lock hole 41. The lock head 13 will squeeze the first pin 21 to move to the right, and the second compression spring 22 will be compressed. After the lock head 13 is inserted to the bottom of the lock hole 41, the first pin 21 will extend under the elastic force of the second compression spring 22, and its lower end face will engage with the top of the lock head 13 to achieve automatic locking.

[0096] See Figure 6 As shown (in) Figure 6 (The location shown in the diagram is for reference only). For manual locking of the electronic lock: When locked, the second tumbler 25 engages with the second rack 612, fixing the locking head 61 and preventing it from retracting, maintaining its current state. At this time, the pry bar 81 is moved upwards, rotating clockwise along the pivot 46. The third tumbler 84 moves downwards, its end pressed by the locking head 61, causing the fourth compression spring 83 to contract. After the third tumbler 84 disengages from the current tooth of the third rack 613, the fourth compression spring 83 pops out, causing the third tumbler 84 to engage with the next tooth of the third rack 613. Releasing the pry bar 81 resets it under the tension of the second tension spring 82, and the third tumbler 84 lifts the locking head 61 upwards. Repeat this process until fully locked, ensuring the canvas bag opening is completely sealed.

[0097] During the above process, each time the third ball 84 engages with the next tooth of the third rack 613, the second ball 25 also engages with the next tooth of the second rack 612 simultaneously, and the clamping head 61 can extend in a unidirectional step-by-step manner.

[0098] See Figure 1 As shown (in) Figure 1(See the reference frame in the diagram). Electronic lock unlocking: After receiving the unlocking command, the wireless controller 5 controls the motor 3 to operate. The motor 3 drives the latch 2 to move to the right via gears. The first pin 21 moves away from the top of the lock head 13, and the lock head 13 pops out of the keyhole 41 under the elastic force of the first compression spring 12. At the same time, the second pin 25 moves away from the second rack 612, and the locking head 61 resets under the tension of the first tension spring 62 (during the reset process, the third pin 84 automatically moves from the locking position at the lower end of the third rack 613 to the locking position at the upper end of the third rack 613), thus unlocking. Finally, the entire electronic lock falls from the bag opening under gravity. There is no need to unlock it manually. The fallen electronic lock can be retrieved and reused.

[0099] After a certain period of time, the wireless controller 5 will automatically control the motor 3 to rotate in the opposite direction, thereby resetting the latch 2.

[0100] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component 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.

[0101] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0102] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electronic lock comprising a lock body (4) provided with a lock hole (41), characterized in that, Also include: Flexible lock beam (1), one end is fixed on the lock body (4), the other end is provided with a lock head assembly which can be inserted into the lock hole (41); The top device includes a top rod (6) and a crowbar (8); The top rod (6) is telescopically arranged inside the lock body (4), and one end of the top rod (6) can extend out of the lock body (4) and be located between the fixed end of the flexible lock beam (1) and the lock hole (41); One end of the crowbar (8) is in transmission connection with the top rod (6), and the other end of the crowbar (8) extends out of the lock body (4) and is used for driving the top rod (6) to extend out of the lock body (4); The lock tongue (2) is movably arranged inside the lock body (4), and the first end of the lock tongue (2) is used for selectively clamping or disengaging with the lock head assembly, and the second end of the lock tongue (2) is used for selectively clamping or disengaging with the top rod (6); The wireless controller (5) is arranged inside the lock body (4) and is in transmission connection with the lock tongue (2), and is used for receiving a wireless signal and driving the lock tongue (2) to disengage the first end of the lock tongue (2) from the lock head assembly and to disengage the second end of the lock tongue (2) from the top rod (6); When the second end of the lock tongue (2) is disengaged from the top rod (6), the top rod (6) is retracted into the lock body (4) and is reset; The lock tongue (2) includes a first elastic pin (21), a second compression spring (22) and a lock rod (23); One end of the first elastic pin (21) is connected with one end of the lock rod (23) through the second compression spring (22), and the other end of the first elastic pin (21) is selectively clamped or disengaged with the lock head assembly; The lock tongue (2) further includes a third compression spring (24) and a second elastic pin (25), and one end of the second elastic pin (25) is connected with the other end of the lock rod (23) through the third compression spring (24); The top rod (6) includes a top tightening head (61) and a first tensile spring (62), the top tightening head (61) is telescopically arranged in the lock body (4), the top of the top tightening head (61) can extend out of the lock body (4), and the bottom of the top tightening head (61) is connected with the lock body (4) through the first tensile spring (62); The side surface of the top tightening head (61) on the side facing the lock tongue (2) is provided with a second rack (612) for selectively clamping or disengaging with the second elastic pin (25); When the first elastic pin (21) is clamped with the lock head assembly, the second elastic pin (25) is clamped with the second rack (612); When the first elastic pin (21) is disengaged from the lock head assembly, the second elastic pin (25) is disengaged from the second rack (612); The crowbar (8) includes a crowbar handle (81), a fourth compression spring (83) and a third elastic pin (84); The side surface of the top tightening head (61) on the side away from the lock tongue (2) is provided with a third rack (613), and the third elastic pin (84) is clamped with the third rack (613).

2. The electronic lock of claim 1, wherein, The end of the first elastic pin (21) clamped with the lock head assembly is formed with: A first guide surface is arranged towards the opening of the lock hole (41), which is used for guiding the inserted lock head (13) to the bottom of the lock hole (41); A first clamping surface is arranged towards the bottom of the lock hole (41), which is used for clamping with the lock head (13) inserted into the bottom of the lock hole (41).

3. The electronic lock of claim 2, wherein, The lock rod (23) is provided with a first rack (231), the lock body (4) is provided with a motor (3) and a battery (9), the output end of the motor (3) is fixedly connected with a gear, the gear is engaged with the first rack (231), the motor (3) is electrically connected with a wireless controller (5), and the power supply end of the wireless controller (5) and the power supply end of the motor (3) are electrically connected with the battery (9).

4. The electronic lock of claim 2, wherein, A plurality of first limiting blocks (42) for limiting the moving direction and the maximum moving distance of the lock rod (23) are arranged beside the lock rod (23) in the lock body (4).

5. The electronic lock of claim 1, wherein, A limiting guide mechanism is arranged between the lock body (4) and the jacking head (61); the limiting guide mechanism comprises a stroke through slot (611) arranged on the jacking head (61) and a second limiting block (44) arranged in the lock body (4), and the second limiting block (44) is clamped into the stroke through slot (611).

6. The electronic lock of claim 1, wherein, A rotating shaft (46) is arranged in the lock body (4), the crowbar (81) is rotationally connected with the rotating shaft (46), one end of the crowbar (81) is connected with the third spring (84) through the fourth compression spring (83), and the other end of the crowbar (81) extends out of the lock body (4). When the one end of the crowbar (81) extending out of the lock body (4) moves in the direction extending out of the jacking head (61), the jacking head (61) extends out of the second spring (25) and the third spring (84) in a one-way stepping mode.

7. The electronic lock of claim 6, wherein, The crowbar (8) further comprises a second extension spring (82), the second extension spring (82) is arranged below the crowbar (81) on the side away from the third spring (84), one end of the second extension spring (82) is fixedly connected with the lock body (4), and the other end of the second extension spring (82) is fixedly connected with the side surface of the crowbar (81).

8. The electronic lock of claim 1, wherein, The lock head assembly comprises: A fastening block (11) is fixed on the flexible lock beam (1); A lock head (13) is fixed on the end portion of the end of the flexible lock beam (1) inserted into the lock hole (41); A first compression spring (12) is sleeved on the flexible lock beam (1) and located between the fastening block (11) and the lock head (13), and the top end of the first compression spring (12) is fixedly connected with the fastening block (11); When the lock head (13) is inserted into the lock hole (41), the bottom end of the first compression spring (12) is in pressure contact with the lock body (4).

9. The electronic lock of claim 8, wherein, The first compression spring (12) is conical, and the diameter of the bottom end of the first compression spring (12) is greater than the diameter of the lock hole (41).

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