Electronic padlock with compact structure

Abstract

The electronic padlock with the compact structure comprises a lock body and a lock hook, a lateral lock groove is formed in the lock hook, a lock pin is rotationally installed on the lock body and clamped into the lock groove to lock the lock hook, a motor is further installed to drive the lock pin to rotate till the lock pin retreats out of the lock groove to achieve unlocking, the lock body is provided with a control module to be connected with the motor, and the motor and the lock pin are both arranged on the first side of the lock body. The lock groove is formed in the same side of the lock hook, and the control module is arranged on the second side, opposite to the first side, of the motor and laterally arranged side by side with the motor. Due to the fact that the motor is arranged on the first side of the lock body, the lock groove is formed in the same side of the lock hook, the lock pin only needs to be arranged on the first side of the lock body, the lock pin can be conveniently clamped into the lock groove and can be driven by the motor to rotate for unlocking, occupied space is small, and the electronic padlock is compact in structure. The control module and the motor are laterally arranged side by side and do not need to protrude outwards, and attractiveness is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic padlocks, in particular to an electronic padlock with a compact structure. Background Art

[0002] An electronic padlock includes a lock body and a lock hook. The left and right ends of the lock hook are respectively inserted downward into the left and right parts of the lock body, and a lateral lock groove is opened at one end of the lock hook. A sliding groove is provided inside the lock body, and a lock pin is slidably installed in the sliding groove and inserted into the lateral lock groove to lock the lock hook. Once the lock hook is subjected to an upward external force, the force is transmitted to the lock pin, and the lock pin exerts a downward resistance on the lock hook to prevent the lock hook from accidentally disengaging from the lock body under the action of the external force. The lock pin matches the shape of the sliding groove, and a motor is installed inside the lock body to drive the lock pin to slide out of the lateral lock groove along the sliding groove to achieve unlocking. In the locked state, every time the lock hook is subjected to an upward external force, the force is transmitted to the lock pin. Over time, the lock pin is prone to deformation under the action of the external force, and the deformed lock pin may be difficult to slide out of the lock groove along the sliding groove, resulting in the padlock being unable to be normally unlocked.

[0003] Patent document CN212958127U discloses an electronic padlock. The lock pin of this padlock is rotatably installed inside the lock body, and a control module is provided on the lock body. The control module controls the motor to drive the lock pin to rotate out of the lock groove of the lock hook to achieve unlocking. The lock pin of this electronic padlock is rotatably installed instead of slidably installed. There is no need to provide a sliding groove on the lock body that matches the shape of the lock pin, and the lock pin does not need to slide along the sliding groove. Therefore, even if the lock pin is deformed under the action of an external force, it can still rotate out of the lock groove smoothly. Since the motor is provided on the left part of the lock body while the lateral lock groove is opened at the right end of the lock hook, the lock pin needs to be connected to the motor at the left end and extend to the vicinity of the lock groove of the lock hook at the right end, occupying a large space, making it difficult to leave enough space on the right side of the motor to accommodate the control module. The control module has to be provided on the front side of the motor. In order to make the lock body as thin as possible, the control module has to protrude outward, affecting the appearance. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an electronic padlock with a compact structure, in which the lock pin is rotatably installed and occupies less space, and the control module is arranged side by side with the motor laterally and does not need to protrude outward.

[0005] To solve the above technical problem, the compact electronic padlock of the utility model includes a lock body and a lock hook. The lock hook is provided with a lateral lock groove. The lock body rotatably installs a lock pin that is engaged in the lock groove to lock the lock hook. A motor is also installed to drive the lock pin to rotate until it exits the lock groove to achieve unlocking. The lock body is provided with a control module that is connected to the motor in a controlled manner. The motor and the lock pin are both arranged on the first side of the lock body, the lock groove is opened on the same side as the lock hook, and the control module is arranged on the second side of the motor opposite to the first side and is arranged side by side with the motor laterally.

[0006] Furthermore, the control module is a fingerprint recognition control module.

[0007] Furthermore, the locking hook is inserted into the lock body and can be disengaged from the lock body in the unlocked state.

[0008] Furthermore, it includes a detaching spring that drives the locking hook to disengage from the lock body in the unlocked state.

[0009] Furthermore, the locking hook is in an "n" shape, with its two ends being a fixed end that cannot be disengaged from the lock body and a movable end that can be disengaged from the lock body in the unlocked state. The locking groove is opened on the movable end, and the motor is located below the movable end.

[0010] Furthermore, the locking pin is located above the second side of the motor and above the first side of the control module.

[0011] Furthermore, a crank is provided, and the motor drives the crank to rotate, driving the locking pin to rotate out of the locking groove to achieve unlocking.

[0012] Furthermore, it includes a reset spring that drives the locking pin to reset.

[0013] Furthermore, the locking hook is inserted downward into the lock body and can be disengaged upward from the lock body in the unlocked state. The top surface of the locking pin is inclined downward along the direction of reset rotation to form a retreat inclined surface; in the state where the locking hook has been disengaged upward from the lock body and the locking pin has been reset, the locking hook can be inserted downward back into the lock body to push the retreat inclined surface of the locking pin, causing the locking pin to rotate and retreat against the elastic force of the reset spring until the locking pin aligns with the locking groove of the locking hook. In this state, the reset spring drives the locking pin to reset and snap into the locking groove.

[0014] Furthermore, it includes a battery that powers the motor and the control module.

[0015] Since the motor is installed on the first side of the lock body and the locking groove is opened on the same side as the locking hook, the locking pin only needs to be set on the first side of the lock body, which is convenient for snapping into the locking groove and can be driven by the motor to rotate and unlock, occupying less space, and the electronic padlock thus achieves a compact structure. The control module is arranged side by side with the motor laterally and does not need to protrude outward, which will not affect the appearance. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the electronic padlock.

[0017] Figure 2 is a schematic diagram of the electronic padlock after removing the front shell of the lock body.

[0018] Figure 3 is Figure 2 a partial enlarged view of Figure 2 showing the enlarged part A of

[0019] Figure 4 is a schematic diagram of the locking pin and the reset torsion spring.

[0020] Figure 5 is Figure 2 a partially enlarged view of, in which Figure 2 part A of is enlarged. In the figure, the locking pin has come out of the locking groove of the locking hook.

[0021] Figure 6 is a schematic diagram of the electronic padlock after removing the front shell of the lock body. In the figure, the left end of the locking hook has come out of the lock body.

[0022] Figure 7 is Figure 6 a partially enlarged view of, in which Figure 6 part B of is enlarged. In the figure, the left end of the locking hook is pushing down the locking pin.

[0023] Figure 8 is a schematic diagram of the lock body, fingerprint recognition control module and battery. Specific embodiments

[0024] The present invention will be further described in detail below in conjunction with specific embodiments.

[0025] The electronic padlock is shown in Figure 1 , and includes a lock body 1 and an "n"-shaped locking hook 2. The left and right ends 21 and 22 of the locking hook 2 are respectively inserted downward into the lock body 1. See Figure 2 and Figure 3 . A locking pin 3 is rotatably installed on the left side inside the lock body 1. A lateral locking groove 20 facing right is formed at the left end 21 of the locking hook 2. A convex block 30 extends leftward from the locking pin 3 and is engaged in the locking groove 20 to lock the locking hook 2. A detaching spring 9 is installed inside the lock body 1. The lower end of the detaching spring 9 abuts downward against the lock body 1, and the upper end abuts upward against the right end 22 of the locking hook 2, applying an upward elastic force to the locking hook 2. Since the locking pin 3 is engaged in the locking groove 20 to lock the locking hook 2, the locking hook 2 usually does not withdraw upward out of the lock body 1 under the action of the detaching spring 9.

[0026] The lock body 1 is shown in Figure 8 , and includes a front shell 11 and a rear shell 12 that are snap-connected together. After removing the front shell 11, see Figure 2 and Figure 3, a motor 4 is installed on the left side inside the lock body 1 below the left end 21 of the lock hook 2. The lock pin 3 is located on the upper right side of the motor 4 and has a linkage rod 39 extending downward. The top of the motor 4 is drivingly connected to a crank 41, and the crank 41 abuts against the linkage rod 39. A battery 7 is installed on the right side inside the lock body 1 at the rear and a fingerprint recognition control module 5 is installed at the front. The battery 7 supplies power to the motor 4 and the fingerprint recognition control module 5. The fingerprint recognition control module 5 is a prior art and has a control PCB board 51 which is control-connected to the motor 4. A fingerprint recognizer 52 is soldered on the control PCB board 51 and exposed forward. Fingerprint information is recorded in the control PCB board 51. When unlocking is required, when a finger presses the fingerprint recognizer 52 and the control PCB board 51 recognizes that the fingerprint information of the finger coincides with the recorded fingerprint information, it controls the motor 4 to drive the crank 41 to rotate, so that the crank 41 drives the lock pin 3 to rotate around the rotation axis 35 of the lock pin 3 through the linkage rod 39 until as Figure 5 shown, the convex block 30 of the lock pin 3 exits outside the lock groove 20 to achieve unlocking. In this state, the lock hook 2 is driven by a decoupling spring 9 to move upward. The left end 21 of the lock hook 2 is used as a movable end and protrudes upward outside the lock body 1. See Figure 6 . The right end 22 of the lock hook 2 is used as a fixed end. Although it can move upward, after moving a certain distance, it is blocked by the rear shell 12 of the lock body 1 and cannot protrude upward outside the lock body 1. The control PCB board 51 controls the motor 4 to drive the crank 41 to rotate in the reverse direction to reset after 1 second. See Figure 4 . An installation groove 36 is formed on the outer peripheral side of the rotation axis 35 of the lock pin 3. A return torsion spring 6 is installed in the installation groove 36. The return torsion spring 6 is sleeved outside the rotation axis 35. One end 62 of it extends outside the installation groove 36 and abuts against the front shell of the lock body 1 (removed in the figure), and the other end 61 abuts against the groove wall of the installation groove 36 of the lock pin 3, applying an elastic force to the lock pin 3 to make it rotate in the reverse direction to reset.

[0027] See Figure 7 . The top surface of the lock pin 3 is inclined downward along the direction of reverse rotation to form a retreat inclined surface 31. An arc-shaped pushing surface 211 is provided at the bottom of the left end 21 of the lock hook 2. In the state where the lock hook 2 has protruded upward outside the lock body 1 and the lock pin 3 has been reset, the lock hook 2 can be inserted downward back into the lock body 1. During this process, the arc-shaped pushing surface 211 of the lock hook 2 pushes the retreat inclined surface 31 of the lock pin 3 to make the lock pin 3 rotate and retreat against the elastic force of the return torsion spring 6 until the lock pin 3 aligns with the lock groove 20 of the lock hook 2. In this state, the return torsion spring 6 drives the lock pin 3 to reset and snap into the lock groove 20. After snapping in, as Figure 3 shown.

[0028] See Figure 2, since the motor 4 is provided on the left side of the lock body 1 and the lock groove 20 is opened on the left side of the lock hook 2, the lock pin 3 only needs to be provided on the left side of the lock body 1, above the fingerprint recognition control module 5, which is convenient for being inserted into the lock groove 20 and can be driven by the motor 4 to rotate and unlock, occupying less space, and the electronic padlock realizes a compact structure in this way. The fingerprint recognition control module 5 is located on the right side of the motor 4, side by side with the motor 4 laterally, without protruding outward, and will not affect the aesthetics. Although the battery 7 is located behind the fingerprint recognition control module 5, the battery 7 is not restricted by the internal hardware of the motor 4 like the motor 4 and can be made flat, such as Figure 8 , so the fingerprint recognition control module 5 still does not need to protrude outward. Since the left end 21 of the lock hook 2 is a movable end and it will not be inserted deep into the lock body 1, this electronic padlock cleverly utilizes the space below the left end 21 of the lock hook 2 of the lock body 1 to accommodate the motor 4. In other embodiments, the motor 4 and the lock pin 3 can be changed to be provided on the right side of the lock body 1. Correspondingly, the lock groove 20 is opened on the right side of the lock hook 2, and the fingerprint recognition control module 5 is provided on the left side of the motor 4.

[0029] See Figure 2 、 Figure 3 , in other embodiments, other control modules can be used to control the motor 4. For example, an existing password control module can be used. When unlocking is required, the correct password is input into the password control module. When the password control module recognizes that the password is correct, it controls the motor 4 to drive the lock pin 3 to rotate and unlock.

[0030] In other embodiments, the lock hook 2 can be changed to other shapes, such as an "m" shape. The left end 21 of the lock hook 2 is changed to not be inserted into the lock body 1, and the convex block 30 of the lock pin 3 is exposed and is inserted into the lock groove 20 at the left end 21 of the lock hook 2.

[0031] In other embodiments, the detaching spring 9 can be cancelled, and after unlocking, it is necessary to manually pull up the lock hook 2 upward so that the left end 21 of the lock hook 2 protrudes out of the lock body 1.

[0032] In other embodiments, the reset torsion spring 6 and the crank 41 can be cancelled, and the drive shaft of the motor 4 is directly driven to connect to the lock pin 3 to drive the lock pin 3 to rotate and unlock, and drive the lock pin 3 to rotate in the reverse direction to reset after 1 second of unlocking.

[0033] In other embodiments, the battery 7 can be cancelled and changed to be powered by an external power source for the motor 4 and the fingerprint recognition control module 5.

[0034] As described above, it is only the implementation manner of the present invention, and the patent protection scope is not limited thereby. Those skilled in the art make non-substantive changes or substitutions based on the present invention, and still fall within the patent protection scope.

Claims

1. A compact electronic padlock, comprising a lock body and a lock hook, wherein the lock hook is provided with a lateral lock slot, a lock pin is installed on the lock body to lock the lock hook when the lock body rotates and is inserted into the lock slot, and a motor is also installed to drive the lock pin to rotate until it exits the lock slot to unlock the lock, and the lock body is provided with a control module to control the motor, characterized in that: The motor and the lock pin are both arranged on a first side of the lock body, the lock slot is opened on the same side of the lock hook, and the control module is arranged on a second side of the motor opposite to the first side and side by side with the motor.

2. The electronic padlock according to claim 1, characterized in that: The control module is a fingerprint recognition control module.

3. The electronic padlock according to claim 1, characterized in that: The lock hook is inserted into the lock body and can be removed from the lock body in an unlocked state.

4. The electronic padlock according to claim 3, characterized in that: It includes a decoupling spring that drives the lock hook to decouple from the lock body in the unlocked state.

5. The electronic padlock according to claim 3, characterized in that: The lock hook is in an "n" shape, with two ends respectively being a fixed end that cannot be removed from the lock body and a movable end that can be removed from the lock body in an unlocked state. The lock slot is opened on the movable end, and the motor is located below the movable end.

6. The electronic padlock according to claim 5, characterized in that: The locking pin is located above the second side of the motor and above the first side of the control module.

7. The electronic padlock according to any one of claims 1 to 6, characterized in that: A crank is provided, and the motor drives the crank to rotate and drives the lock pin to rotate until it exits the lock slot to realize unlocking.

8. The electronic padlock according to claim 1, characterized in that: Includes a return spring that drives the locking pin to return.

9. The electronic padlock according to claim 8, characterized in that: The lock hook is inserted into the lock body with the lock hook facing downward and can be disengaged upward outside the lock body in the unlocked state, and the top surface of the lock pin is inclined downward along the direction of the reset rotation to form a retreat slope; when the lock hook has been disengaged upward outside the lock body and the lock pin has been reset, the lock hook can be reinserted into the lock body downward to push the retreat slope of the lock pin so that the lock pin overcomes the elastic force of the reset spring and rotates and retreats until the lock pin is aligned with the lock slot of the lock hook. In this state, the reset spring drives the lock pin to reset and snap into the lock slot.

10. The electronic padlock according to claim 1, characterized in that: Includes batteries to power the motor and control module.

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