An electronic smart lock

Abstract

This utility model discloses an electronic smart padlock, including a padlock body and a locking bar. A driving device is installed inside the padlock body, connected to a latch assembly that can reciprocate within the padlock body. The latch assembly is movably connected to the locking bar. The padlock body also has a hanging arm that restricts the locking bar to the padlock body. When the driving device drives the latch assembly to disengage from the locking bar, the locking bar detaches from the padlock body and slides upwards until it is fixed to the hanging arm. The reciprocating movement of the latch assembly, driven by the driving device inside the padlock body, forms a movable connection with the locking bar, achieving locking or unlocking. This novel bolt-type electronic smart padlock is formed through the coordinated design of the locking bar, padlock body, and hanging arm. This design eliminates the reliance on a U-shaped lock beam, and the diameter and length of the locking bar can be independently designed according to specific usage scenarios. A higher locking strength can be achieved simply by increasing the diameter of the locking bar 2 or the dimensions of key parts, in conjunction with the latch assembly.

Description

Technical Field

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

[0002] Currently, in the padlock industry, traditional padlocks mostly adopt a U-shaped shank structure. Due to the shape characteristics of the shank, this structure presents a challenge in balancing lock body size and shank strength. Specifically, if high shank strength is desired, the cross-section of the shank needs to be increased, resulting in a very large overall lock body. Conversely, if the overall lock body is made smaller, the diameter of the shank cannot be increased, and its cross-section (the so-called "dangerous section") cannot guarantee sufficient strength. In some critical equipment applications, such as street light distribution cabinets, traffic light control boxes, and warehouse doors, padlocks have a special requirement: a small lock body size to accommodate installation space constraints, while simultaneously possessing a high-strength locking structure to ensure equipment security.

[0003] Therefore, there is an urgent need for a bolt-type electronic smart padlock that can achieve high-strength locking on a small-sized lock body, in order to solve the problem of balancing lock body size and locking strength in existing technologies. Utility Model Content

[0004] The purpose of this invention is to overcome the problem that existing U-shaped padlocks cannot balance the size of the lock body and the strength of the lock beam. It provides an electronic smart padlock that uses a drive device inside the padlock body to move the bolt assembly back and forth, forming a movable connection with the lock bar to achieve locking or unlocking. The hanging arm restricts the lock bar to the padlock body when it is freed from the bolt assembly. It can achieve high-strength locking on a small lock body without relying on a large lock beam, effectively balancing the size of the lock body and the locking strength.

[0005] The objective of this utility model is mainly achieved through the following technical solutions:

[0006] An electronic smart padlock includes a padlock body and a locking bar;

[0007] The padlock body is equipped with a drive device, which is connected to a latch assembly that can reciprocate inside the padlock body. The latch assembly is movably connected to the lock bar.

[0008] The padlock body is also equipped with a hanging arm that restricts the locking bar to the padlock body;

[0009] When the drive unit drives the latch assembly to disengage from the lock bar, the lock bar detaches from the padlock body and slides upwards until it is fixed on the pad arm.

[0010] In this embodiment, a drive device inside the padlock body drives the latch assembly to reciprocate, forming a movable connection with the lock bar to achieve locking or unlocking. The hanging arm restrains the lock bar to the padlock body when it is freed from the latch assembly. This linkage design of the lock bar, padlock body, and hanging arm creates a novel bolt-type electronic smart padlock. The lock bar is one of the key components for achieving the locking function. Unlike traditional U-shaped padlocks, this design eliminates the reliance on a U-shaped lock beam. The lock bar can be flexibly set and is no longer limited by the shape characteristics of the U-shaped lock beam in terms of size and strength. Unlike traditional U-shaped padlocks, it does not rely on the overall strength of the lock beam. High-strength locking can be achieved on a small-sized padlock body simply by increasing the structural fit between the lock bar and the latch assembly. When further increasing the locking strength is required, there is no need to increase the overall size of the padlock; simply increasing the lock bar and the keyhole on the padlock body that connects to the lock bar is sufficient to achieve even stronger locking, effectively balancing the lock body size and locking strength.

[0011] Furthermore, the padlock body is equipped with a waterproof box to house the drive unit, which includes a lithium battery, a PCBA circuit board, a drive motor, and a turntable.

[0012] The lithium battery is embedded in a waterproof box and electrically connected to the PCBA circuit board and the drive motor. The PCBA circuit board is electrically connected to the drive motor, and the drive shaft of the drive motor is fixedly connected to the turntable.

[0013] Furthermore, the interior of the waterproof box has a first guide channel for accommodating the latch assembly;

[0014] The locking tongue assembly includes a first spring, a sliding frame, and a first locking tongue. The first spring, the sliding frame, and the first locking tongue are arranged sequentially from left to right in the first guide channel. The tail end of the first locking tongue is fixedly connected to the right side of the sliding frame. One end of the first spring passes through the sliding frame and is connected to the tail end of the first locking tongue, while the other end presses against the left inner wall of the first guide channel.

[0015] Furthermore, a cylindrical pin is provided at the eccentric part of the turntable, and a circular slot is provided on the bottom edge of the sliding frame for the cylindrical pin to be inserted. The turntable is fixedly connected to the circular slot of the sliding frame through the cylindrical pin.

[0016] Furthermore, the head of the locking bar is partially recessed inward to form an annular groove, and the front end of the first locking tongue is provided with a beveled tongue;

[0017] When locked, the first locking tongue engages with the annular groove.

[0018] Furthermore, a through hole is provided at the top of the hanging arm, extending through the bottom of the hanging arm, and the through hole is slidably connected to the locking rod;

[0019] The hanging arm also has a second guide channel that communicates with the through hole. From left to right, a push rod, a slider, and a second locking tongue are embedded in the second guide channel. The second locking tongue is fixedly connected to the right side of the slider, and the push rod is fixedly connected to the left side of the slider.

[0020] A second spring is also provided on the push rod. One end of the second spring presses against the push rod, and the other end presses against the inner left wall of the second guide channel.

[0021] Furthermore, a third guide channel is provided inside the waterproof box, which is connected to the first guide channel. A third spring and a top holding block are arranged sequentially from bottom to top in the third guide channel. One end of the third spring presses against the bottom of the third guide channel, and the other end is fixedly connected to the top holding block. When locked, the third spring presses against the locking rod through the top holding block.

[0022] Furthermore, the part of the first locking tongue near the oblique tongue protrudes outward to form an annular retaining ring. A fourth spring is also provided between the sliding frame and the annular retaining ring. The fourth spring is sleeved on the first locking tongue and presses the sliding frame and the annular retaining ring respectively.

[0023] Furthermore, a waterproof gasket is provided between the annular retaining ring and the oblique tongue of the first locking tongue, and the waterproof gasket presses against the inner wall of the first guide channel.

[0024] Furthermore, a shock-absorbing pad is installed between the padlock body and the waterproof box.

[0025] The technical advantages of this solution are that the electronic smart padlock achieves high-strength locking on a small-sized lock body through the coordinated operation of the padlock body, locking bar, drive device, bolt assembly, and hanging arm. The drive device drives the bolt assembly to reciprocate within the padlock body, forming a stable movable connection with the locking bar. This replaces the traditional U-shaped locking beam method, ensuring locking strength without relying on a large locking beam, effectively balancing lock body size and locking performance. The hanging arm's restraining effect on the locking bar ensures its stable position in the unlocked state, improving reliability during use. The inclusion of a waterproof box and shock-absorbing pads enhances the lock body's waterproof and shockproof capabilities, ensuring stable operation in outdoor or critical equipment scenarios such as street light distribution cabinets and traffic light control boxes. Attached Figure Description

[0026] 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:

[0027] Figure 1 This is a schematic diagram of the electronic smart padlock of this utility model;

[0028] Figure 2 This is an exploded view of the electronic smart padlock of this utility model;

[0029] Figure 3 This is a schematic diagram of the locking rod of this utility model;

[0030] Figure 4 This is a structural diagram of the electronic smart padlock of this utility model when it is unlocked;

[0031] Figure 5 This is a structural diagram of the locking tongue assembly of this utility model;

[0032] Figure 6 This is a structural diagram of the electronic smart padlock of this utility model when it is locked.

[0033] Figure 7 This is a structural diagram of the shock-absorbing pad of this utility model;

[0034] Attachment title:

[0035] 1-Padlock body; 2-Lock bar; 3-Hanging arm; 4-Waterproof box; 5-Lithium battery; 6-PCBA circuit board; 7-Drive motor; 8-Turntable; 9-First spring; 10-Sliding frame; 11-First bolt; 12-Annular groove; 13-Push rod; 14-Slider; 15-Second bolt; 16-Second spring; 17-Third spring; 18-Top support block; 19-Annular retaining ring; 20-Fourth spring; 21-Waterproof rubber pad; 22-Shock-absorbing pad. Detailed Implementation

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0044] According to one embodiment of the present invention, such as Figures 1-7 As shown, an electronic smart padlock includes a padlock body 1 and a locking bar 2;

[0045] The padlock body 1 is provided with a drive device, which is connected to a latch assembly that can reciprocate inside the padlock body 1. The latch assembly is movably connected to the lock bar 2.

[0046] The padlock body 1 is also provided with a hanging arm 3 that restricts the locking bar 2 to the padlock body 1;

[0047] When the driving device drives the latch assembly to disengage from the locking bar 2, the locking bar 2 disengages from the padlock body 1 and slides upwards to be fixed on the hanging arm 3.

[0048] In this embodiment, the drive device inside the padlock body 1 drives the bolt assembly to move back and forth, forming a movable connection with the locking bar 2 to achieve locking or unlocking. The hanging arm 3 restrains the locking bar 2 to the padlock body 1 when it is freed from the bolt assembly. The linkage design of the locking bar 2, the padlock body 1, and the hanging arm 3 forms a new type of bolt-type electronic smart padlock. The locking bar 2 of this electronic smart padlock is one of the key components for realizing the locking function. Unlike traditional U-shaped padlocks, this design eliminates the reliance on a U-shaped locking beam. The diameter and length of the locking bar 2 can be designed independently, without being limited by the bending structure of the U-shaped locking beam. Unlike traditional U-shaped padlocks, it does not depend on the overall strength of the locking beam. On a small-sized padlock body 1, a high-strength lock can be formed simply by increasing the size of the locking bar 2 and cooperating with the lock tongue assembly. When a further increase in locking strength is required, there is no need to increase the overall size of the padlock. A higher-strength lock can be formed simply by increasing the size of the locking bar 2 and the size of the keyhole on the padlock body 1 that connects to the locking bar 2, effectively balancing the lock body size and locking strength.

[0049] In one possible implementation, please refer to [the relevant documentation / reference]. Figure 2 and Figure 4 The padlock body 1 is provided with a waterproof box 4 for accommodating the drive device. The drive device includes a lithium battery 5, a PCBA circuit board 6, a drive motor 7, and a turntable 8.

[0050] The lithium battery 5 is embedded in the waterproof box 4 and is electrically connected to the PCBA circuit board 6 and the drive motor 7 respectively. The PCBA circuit board 6 is electrically connected to the drive motor 7, and the drive shaft of the drive motor 7 is fixedly connected to the turntable 8.

[0051] In this embodiment, the waterproof box 4 provides an independent installation space for the drive device, effectively preventing external moisture and dust from entering the drive device. The lithium battery 5 serves as the power source, providing stable power to the entire drive system through electrical connections with the PCBA circuit board 6 and the drive motor 7. The PCBA circuit board 6 precisely controls the start, stop, and rotation direction of the drive motor 7. The drive shaft of the drive motor 7 drives the turntable 8 to rotate synchronously, which in turn drives the latch assembly to slide, thereby locking or unlocking the lock rod 2. This integrated drive device design not only makes the internal structure of the padlock more compact but also ensures the stability and reliability of the drive process, providing core power support for the intelligent locking and unlocking of the lock.

[0052] In one possible implementation, please refer to [the relevant documentation / reference]. Figure 4 and Figure 5 The waterproof box 4 has a first guide channel inside to accommodate the locking tongue assembly;

[0053] The latch assembly includes a first spring 9, a sliding frame 10, and a first latch 11. The first spring 9, the sliding frame 10, and the first latch 11 are arranged sequentially from left to right in the first guide channel. The tail end of the first latch 11 is fixedly connected to the right side of the sliding frame 10. One end of the first spring 9 passes through the sliding frame 10 and is connected to the tail end of the first latch 11, while the other end presses against the left inner wall of the first guide channel.

[0054] In this embodiment, the first guide channel provides precise trajectory constraints for the movement of the latch assembly, ensuring that the sliding frame 10 and the first latch 11 can move smoothly back and forth in a fixed direction. When the turntable 8 on the drive motor 7 drives the sliding frame 10 to move to the left, it simultaneously drives the first latch 11 to move to the left to disengage from the locking rod 2 and unlock, while compressing the first spring 9. When the drive motor 7 stops driving, the first spring 9 releases its elastic potential energy, pushing the first latch 11 and the sliding frame 10 to return to the right. This spring-latch assembly cooperation structure ensures that the first latch 11 can tightly cooperate with the locking rod 2 when locked, and can move flexibly during unlocking, improving the sensitivity and reliability of the latch assembly's movement.

[0055] In one possible implementation, a cylindrical pin is provided at the eccentric position of the turntable 8, and a circular slot for inserting the cylindrical pin is provided on the bottom edge of the sliding frame 10. The turntable 8 is fixedly connected to the circular slot of the sliding frame 10 through the cylindrical pin.

[0056] In this embodiment, when the turntable 8 rotates, the cylindrical pin at its eccentric position will perform circular motion around the drive shaft of the drive motor 7. Since the cylindrical pin is inserted into the circular groove at the bottom edge of the sliding frame 10, the circular motion can be converted into linear motion of the sliding frame 10 along the first guide channel. This transmission structure is simple and efficient, and can stably transmit the rotational power of the drive motor 7 to the sliding frame 10, thereby driving the first locking tongue 11 to move, realizing the locking and unlocking of the lock. The cooperation between the circular groove and the cylindrical pin ensures the stability during the transmission process, reduces wear between components, and extends the service life of the lock.

[0057] In one possible implementation, please refer to [the relevant documentation / reference]. Figure 3 The head of the locking rod 2 is partially recessed to form an annular groove 12, and the front end of the first locking tongue 11 is provided with a slanted tongue.

[0058] When locked, the oblique tongue of the first locking tongue 11 engages with the annular groove 12.

[0059] In this embodiment, the upper half of the annular groove 12 is arc-shaped, and the lower half is a rectangular straight edge. The purpose of this design is that when the locking rod 2 is locked with the first locking tongue 11 or the second locking tongue 15, if brute force is used to pull the locking rod 2 out of the first locking tongue 11 or the second locking tongue 15, the structure of the rectangular straight edge of the lower half can effectively block it, so that the locking rod 2 can be firmly locked with the first locking tongue 11 or the second locking tongue 15 and cannot be pulled out, thus ensuring the stability and security of the lock during use. The arc-shaped upper half is used to guide the locking rod 2 to disengage from the second locking tongue 15 when it is pressed down. The second locking tongue 15 can slide smoothly along the arc surface to disengage, reducing the frictional resistance between the two, so that the locking rod 2 can easily overcome the constraint of the second locking tongue 15, disengage from the restriction of the hanging arm 3, and stably press into the padlock body 1 for locking.

[0060] In one possible implementation, please refer to [the relevant documentation / reference]. Figure 1 and 4 The top of the hanging arm 3 has a through hole that passes through the bottom of the hanging arm 3, and the through hole is slidably connected to the locking rod 2;

[0061] The hanging arm 3 is also provided with a second guide channel that communicates with the through hole. The second guide channel is provided with a push rod 13, a slider 14 and a second locking tongue 15 from left to right. The second locking tongue 15 is fixedly connected to the right side of the slider 14 and the push rod 13 is fixedly connected to the left side of the slider 14.

[0062] The push rod 13 is also provided with a second spring 16. One end of the second spring 16 presses against the push rod 13, and the other end presses against the left inner wall of the second guide channel.

[0063] In this embodiment, the through hole at the top of the hanging arm 3 provides a path for the sliding of the locking rod 2, allowing it to move smoothly up and down. When the locking rod 2 slides upward to the position of the hanging arm 3, it presses the second locking tongue 15, causing the slider 14 and push rod 13 to move to the left and compress the second spring 16. When the locking rod 2 moves to its annular groove 12 and enters the through hole, the second spring 16 returns to its original position, pushing the push rod 13, slider 14, and second locking tongue 15 to the right. The second locking tongue 15 then engages with the annular groove 12 of the locking rod 2, securing the locking rod 2 to the hanging arm 3. This structure achieves stable fixation of the locking rod 2 in the unlocked state, preventing it from shaking freely, and also prepares for the next locking operation.

[0064] In one possible implementation, please refer to [the relevant documentation / reference]. Figure 6 The waterproof box 4 also has a third guide channel that communicates with the first guide channel. The third guide channel is provided with a third spring 17 and a top holding block 18 arranged sequentially from bottom to top. One end of the third spring 17 presses the bottom of the third guide channel, and the other end is fixedly connected to the top holding block 18. When locked, the third spring 17 presses the locking rod 2 through the top holding block 18.

[0065] In this embodiment, during the locking process, when the locking rod 2 is inserted into the padlock body 1, the top holding block 18 will be squeezed downward by the locking rod 2, compressing the third spring 17; the third spring 17 will generate an upward elastic force, which will continuously squeeze the locking rod 2 through the top holding block 18, so that the annular groove 12 of the locking rod 2 is tightly engaged with the first locking tongue 11, preventing the two from becoming loose; when unlocking, the third spring 17 releases elastic potential energy, which will drive the top holding block 18 to push the locking rod 2 upward until it is fixed by the hanging arm 3.

[0066] In one possible implementation, please refer to [the relevant documentation / reference]. Figure 4 and Figure 5 The first locking tongue 11 protrudes outward in a partial manner near the oblique tongue to form an annular retaining ring 19. A fourth spring 20 is also provided between the sliding frame 10 and the annular retaining ring 19. The fourth spring 20 is sleeved on the first locking tongue 11 and presses the sliding frame 10 and the annular retaining ring 19 respectively.

[0067] In this embodiment, the fourth spring 20 is sleeved on the first bolt 11, with its two ends pressing against the sliding frame 10 and the annular retaining ring 19, respectively, providing a stable relative position constraint between the first bolt 11 and the sliding frame 10. When subjected to forced unlocking, even if the lock body is subjected to severe impact or external prying, under the elastic support of the fourth spring 20, the first bolt 11 will not retract into the sliding frame 10 due to external pressure, thereby preventing the first bolt 11 from disengaging from the annular retaining groove 12 of the lock rod 2. This effectively prevents the bolt from being displaced by brute force to unlock, further improving the lock's resistance to violent damage and ensuring the reliability of the locking structure.

[0068] In one possible implementation, please refer to [the relevant documentation / reference]. Figure 4 and Figure 5 A waterproof rubber pad 21 is provided between the annular retaining ring 19 and the oblique tongue of the first locking tongue 11, and the waterproof rubber pad 21 presses against the inner wall of the first guide channel.

[0069] In this embodiment, the waterproof gasket 21 tightly presses against the inner wall of the first guide channel, forming a sealed structure around the first latch 11. This effectively prevents external moisture and dust from entering the waterproof box 4 through the first guide channel, avoiding damage to the electrical components caused by moisture entering the drive mechanism. As the first latch 11 moves back and forth, the waterproof gasket 21 moves synchronously, maintaining a good seal and ensuring that critical components such as the drive mechanism are not affected by the external environment. This waterproof design improves the padlock's applicability in harsh environments such as humid and dusty conditions, extending the lock's service life.

[0070] In one possible implementation, please refer to [the relevant documentation / reference]. Figure 7 A shock-absorbing pad 22 is also provided between the padlock body 1 and the waterproof box 4.

[0071] In this embodiment, shock-absorbing pads 22 are installed around both the padlock body 1 and the waterproof box 4. These pads effectively buffer external impacts such as knocks and vibrations on the padlock body 1. When the padlock is subjected to external force, the shock-absorbing pads 22 deform, absorbing some of the impact force and reducing the force transmitted to the waterproof box 4 and its internal drive mechanism and bolt assembly, thus preventing damage or displacement of these precision components due to severe vibration. This shock-absorbing design improves the padlock's impact resistance, ensures stable operation of the lock in complex environments, and further enhances the lock's reliability.

[0072] 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. An electronic smart padlock, characterized in that, Includes the padlock body and the locking bar; The padlock body is provided with a drive device, which is connected to a latch assembly that can reciprocate inside the padlock body. The latch assembly is movably connected to the lock bar. The padlock body is also provided with a hanging arm to restrict the locking bar on the padlock body; When the drive device drives the latch assembly to disengage from the lock bar, the lock bar disengages from the padlock body and slides upwards until it is fixed on the hanging arm.

2. The electronic smart padlock according to claim 1, characterized in that, The padlock body is provided with a waterproof box for accommodating the drive device, which includes a lithium battery, a PCBA circuit board, a drive motor, and a turntable. The lithium battery is embedded in the waterproof box and electrically connected to the PCBA circuit board and the drive motor respectively. The PCBA circuit board is electrically connected to the drive motor, and the drive shaft of the drive motor is fixedly connected to the turntable.

3. The electronic smart padlock according to claim 2, characterized in that, The waterproof box has a first guide channel inside to accommodate the latch assembly; The latch assembly includes a first spring, a sliding frame, and a first latch. The first spring, the sliding frame, and the first latch are arranged sequentially from left to right in the first guide channel. The tail end of the first latch is fixedly connected to the right side of the sliding frame. One end of the first spring passes through the sliding frame and is connected to the tail end of the first latch, while the other end presses against the left inner wall of the first guide channel.

4. An electronic smart padlock according to claim 3, characterized in that, A cylindrical pin is provided at the eccentric part of the turntable, and a circular slot for inserting the cylindrical pin is provided on the bottom edge of the sliding frame. The turntable is fixedly connected to the circular slot of the sliding frame through the cylindrical pin.

5. An electronic smart padlock according to claim 4, characterized in that, The head of the locking rod is partially recessed to form an annular groove, and the front end of the first locking tongue is provided with a slanted tongue. When locked, the oblique tongue of the first locking tongue engages with the annular groove.

6. An electronic smart padlock according to claim 5, characterized in that, The top of the hanging arm has a through hole that extends through the bottom of the hanging arm, and the through hole is slidably connected to the locking rod; The hanging arm also has a second guide channel that communicates with the through hole. A push rod, a slider, and a second locking tongue are embedded in the second guide channel from left to right. The second locking tongue is fixedly connected to the right side of the slider, and the push rod is fixedly connected to the left side of the slider. The push rod is also equipped with a second spring, one end of which presses against the push rod, and the other end of which presses against the inner left wall of the second guide channel.

7. An electronic smart padlock according to claim 5, characterized in that, The waterproof box also has a third guide channel that communicates with the first guide channel. A third spring and a top holding block are arranged sequentially from bottom to top in the third guide channel. One end of the third spring presses against the bottom of the third guide channel, and the other end is fixedly connected to the top holding block. When locked, the third spring presses against the locking rod through the top holding block.

8. An electronic smart padlock according to claim 5, characterized in that, The portion of the first locking tongue near the oblique tongue protrudes outward to form an annular retaining ring. A fourth spring is also provided between the sliding frame and the annular retaining ring. The fourth spring is sleeved on the first locking tongue and presses the sliding frame and the annular retaining ring respectively.

9. An electronic smart padlock according to claim 8, characterized in that, A waterproof rubber pad is provided between the annular retaining ring and the oblique tongue of the first locking tongue, and the waterproof rubber pad presses against the inner wall of the first guide channel.

10. An electronic smart padlock according to claim 2, characterized in that, A shock-absorbing pad is also provided between the padlock body and the waterproof box.

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