Electronic padlock structure

Abstract

The utility model discloses an electronic padlock structure which has an emergency unlocking function and can be unlocked in emergency by using a key. The electronic padlock structure comprises a lock body, a motor, a rotating shaft, a cam, a torsional spring, a lock cylinder, a lock beam and a limiting piece, wherein the motor, the rotating shaft, the cam, the torsional spring and the lock cylinder are arranged on the lock body and are coaxially arranged; the rotating shaft is in transmission connection with the motor; the cam is rotationally arranged on the rotating shaft in a sleeving manner; the torsion spring is sleeved on the rotating shaft, and two ends of the torsion spring are respectively connected with the rotating shaft and the cam; a protruding block in transmission connection with the cam is arranged on the end face of the end of the inner side of the lock cylinder. The surface of the cam is provided with a movable groove allowing the protruding block to be inserted therein. The protruding block is movably matched between the two ends of the movable groove along with rotation of the lock cylinder. The lock beam is mounted outside the lock body; the limiting piece is movably arranged in the lock body in a matched mode and is opposite to the cam.

Description

Technical Field

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

[0002] Padlock is a common lock, mainly used to lock doors, windows, drawers, boxes, containers, etc. to protect property safety and privacy.

[0003] Passive padlocks use an NFC unlocking tool (typically a smartphone) to power and send control commands to the padlock, which has a built-in NFC circuit board. This in turn drives the motor inside the padlock to open and close the padlock. However, if the circuit inside the passive padlock fails, the lock will become inoperable, causing inconvenience to the user. Utility Model Content

[0004] The purpose of the utility model is to provide an electronic padlock structure to solve the problems existing in the prior art. The structure has an emergency unlocking function and can be unlocked by using a key.

[0005] In order to achieve the above objectives, the solution of the present invention is:

[0006] An electronic padlock structure includes a lock body, a motor, a rotating shaft, a cam, a torsion spring and a lock core arranged coaxially on the lock body, as well as a lock beam and a limit piece; the rotating shaft is transmission-connected to the motor; the cam is rotatably sleeved on the rotating shaft; the torsion spring is sleeved on the rotating shaft, and its two ends are respectively connected to the rotating shaft and the cam; a protrusion transmission-connected to the cam is provided on the end surface of the inner end of the lock core; a movable groove is provided on the surface of the cam for the protrusion to be inserted; the protrusion is movably fitted between the two ends of the movable groove as the lock core rotates; the lock beam is installed outside the lock body; the limit piece is movably fitted in the lock body and is arranged opposite to the cam.

[0007] The lock body includes a motor base for fixing the motor, a lock body covering the motor base, a lock shell covering the lock body, and a bottom cover covering the bottom of the lock shell; a space is formed between the motor base and the lock body for coaxial installation of the motor, rotating shaft, cam, torsion spring and lock core; the limit member is movably fitted between the motor base and the opposite surfaces of the lock body.

[0008] The circumferential surface of the cam is provided with a stop angle for limiting the limiting member.

[0009] The protrusion is a rectangular parallelepiped rib, and the movable groove includes two symmetrically arranged arc grooves.

[0010] A sealing cover for covering the outer end of the lock core is provided in the lock body; a spring is provided in the lock body, and the spring abuts against the end surface of one end of the lock beam to provide elastic force to pop out the lock beam.

[0011] An easy-tear notch is formed at a position of the lock body opposite to the outer end of the lock core.

[0012] The circumferential surface of one end of the lock beam is provided with a locking groove and an unlocking ring groove for the movable cooperation of the limiting member. The locking groove is connected to the unlocking ring groove, and the depth of the locking groove is greater than the depth of the unlocking ring groove; the limiting member is a steel ball.

[0013] The electronic padlock structure further includes a main board and an NFC board arranged in the lock body; the NFC board and the lock beam are respectively located at two ends of the lock body, and the motor and the NFC board are electrically connected to the main board.

[0014] The lock body is provided with a main board and a first Hall switch electrically connected to the main board; the main board is electrically connected to the motor, and a first magnet is provided in the lock beam; when the lock is in a locked state, the first Hall switch is connected to the first magnet.

[0015] The lock body is provided with a main board and a second Hall switch electrically connected to the main board; the main board is electrically connected to the motor, and a second magnet is provided in the rotating shaft; when the lock is in a locked state, the second Hall switch is connected to the second magnet.

[0016] After adopting the above technical solution, the utility model has the following technical effects:

[0017] By building a lock cylinder into the electronic padlock, under normal circumstances, the user can drive the motor to work wirelessly (such as NFC, Bluetooth, infrared, etc.), and the motor drives the cam to rotate through the torsion spring, which in turn causes the cam to push the limit part to lock or move the limit part to unlock, thereby realizing the function of automatic opening and closing the lock; when there is a circuit failure or other emergency situation, the key matching the lock cylinder can be inserted into the lock cylinder and drive it to rotate, and the lock cylinder drives the cam to rotate to realize the function of manual unlocking; the movable groove and protrusion between the cam and the lock cylinder ensure that the lock cylinder drives the cam when the lock cylinder is rotated, and under normal circumstances, the lock cylinder will not interfere with the rotation of the motor-driven cam, thereby ensuring the normal operation of the lock's opening and closing function. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective view of a specific embodiment of the present utility model;

[0019] Figure 2 This is an exploded view of a specific embodiment of the present utility model;

[0020] Figure 3 This is a cross-sectional view of a locked state of a specific embodiment of the utility model;

[0021] Figure 4 This is a cross-sectional view of an unlocked state of a specific embodiment of the utility model;

[0022] Figure 5 It is a partial structural perspective diagram of a specific embodiment of the utility model;

[0023] Figure 6 A three-dimensional diagram of a lock core according to a specific embodiment of the present utility model;

[0024] Figure 7 A three-dimensional diagram of a cam according to a specific embodiment of the present utility model;

[0025] Figure 8 This is a schematic diagram of emergency unlocking according to a specific embodiment of the present utility model;

[0026] Description of Figure Numbers:

[0027] 1-Lock body; 11-Motor base; 111-Mounting slot; 12-Lock body; 13-Lock housing; 131-Tear-off notch; 14-Bottom cover; 2-Motor; 21-Output shaft; 3-Rotation shaft; 4-Cam; 41-Moveable slot; 411-Arc slot; 42-Block angle; 5-Torsion spring; 6-Lock cylinder; 61-Bump; 7-Lock beam; 71-Locking groove; 72-Unlocking ring groove; 8-Limiting member; 9-Sealing cover; 10-Spring; 20-Mainboard; 30-NFC board; 40-First Hall effect switch; 50-First magnet; 60-Second Hall effect switch; 70-Second magnet;

[0028] a-key. DETAILED DESCRIPTION

[0029] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0030] refer to Figure 1-7 As shown, the utility model discloses an electronic padlock structure, comprising a lock body 1, a motor 2, a rotating shaft 3, a cam 4, a torsion spring 5 and a lock core 6, which are coaxially arranged on the lock body 1, as well as a U-shaped lock beam 7 and a limiter 8;

[0031] The rotating shaft 3 is fixedly connected to the output shaft 21 of the motor 2;

[0032] The cam 4 is rotatably mounted on the rotating shaft 3;

[0033] The torsion spring 5 is sleeved on the rotating shaft 3, and its two ends are respectively connected to the rotating shaft 3 and the cam 4;

[0034] The outer end of the lock core 6 can be inserted with a matching key a, and the end surface of the inner end thereof is provided with a protrusion 61 which is in transmission connection with the cam 4;

[0035] The surface of the cam 4 is provided with a movable groove 41 for the projection 61 to be inserted; the projection 61 is movably fitted between the two ends of the movable groove 41 as the lock cylinder 6 rotates, so that the lock cylinder 6 drives the cam 4 to rotate;

[0036] The lock beam 7 is installed outside the lock body 1;

[0037] The limiting member 8 is movably fitted in the lock body 1 and is arranged opposite to the cam 4 , and is driven and limited by the cam 4 .

[0038] Through the above scheme, the utility model has a built-in lock cylinder 6 in the electronic padlock. Under normal circumstances, the user can drive the motor 2 to work wirelessly (such as NFC, Bluetooth, infrared, etc.), and the motor 2 drives the cam 4 to rotate through the torsion spring 5, so that the cam 4 pushes the limit member 8 to lock or gives way to the limit member 8 to unlock, thereby realizing the function of automatic opening and closing the lock; when there is a circuit failure or other emergency situation, the key a matching the lock cylinder 6 can be inserted into the lock cylinder 6 and drive it to rotate, and the lock cylinder 6 drives the cam 4 to rotate to realize the function of manual unlocking; the movable groove 41 and the protrusion 61 between the cam 4 and the lock cylinder 6 ensure that the lock cylinder 6 drives the cam 4 when the lock cylinder 6 is rotated, and under normal circumstances, the lock cylinder 6 will not interfere with the rotation of the cam 4 driven by the motor 2, thereby ensuring the normal operation of the lock opening and closing function of the lock.

[0039] Specific embodiments of the present invention are shown below.

[0040] The lock body 1 includes a motor base 11 for fixing the motor 2, a lock body 12 covering the motor base 11, a lock shell 13 covering the lock body 12, and a bottom cover 14 covering the bottom of the lock shell 13; a space is formed between the motor base 11 and the lock body 12 for coaxially installing the power supply 2, the rotating shaft 3, the cam 4, the torsion spring 5 and the lock cylinder 6; the limit member 8 is movably fitted between the opposite surfaces of the motor base 11 and the lock body 12.

[0041] The cam 4 is provided with a stopper 42 on its circumference for retaining the stopper 8. During the rotation of the cam 4, when the stopper 42 is aligned with the stopper 8, the stopper 42 can push the stopper 8 toward the lock beam 7 to lock the lock. When the stopper 42 is misaligned with the stopper 8, the lock beam 7 can extend and move on the lock body 1 to unlock the lock, pushing the stopper 8 toward the cam 4.

[0042] The protrusion 61 is a rectangular parallelepiped rib, and the corresponding movable groove 41 includes two symmetrically arranged arc-shaped grooves 411 .

[0043] The lock body 1 is provided with a sealing cover 9 for covering the outer end of the lock core 6 to prevent dust and dirt. In this embodiment, the sealing cover 9 is fitted on the upper surface of the lock body 12.

[0044] The lock body 1 is formed with an easy-tear notch 131 at a position opposite the outer end of the lock cylinder 6. The easy-tear notch 131 is used to indicate the approximate position of the lock cylinder 6 and forms a tearable opening on the surface of the lock body 1. Under normal circumstances, the lock cylinder 6 is not exposed over a large area. Only in an emergency situation, the easy-tear notch 131 is torn open to expose the lock cylinder 6 for insertion of the key a. In this embodiment, the easy-tear notch 131 is formed on the upper surface of the lock housing 13. It is understood that when the sealing cover 9 is used in conjunction with the easy-tear notch 131, the effect is even better. Even if the easy-tear notch 131 is torn open, the sealing cover 9 can still be used to prevent the lock cylinder 6 from being exposed.

[0045] The lock body 1 is provided with a spring 10, which abuts against the end surface of one end of the lock beam 7 to provide elastic force to pop out the lock beam 7. In this embodiment, the motor base 11 is provided with an installation groove 111 for installing the spring 10.

[0046] The locking beam 7 is provided with a locking groove 71 and an unlocking ring groove 72 on one end thereof, which are adapted to engage the stopper 8. The locking groove 71 is connected to the unlocking ring groove 72, and the depth of the locking groove 71 is greater than that of the unlocking ring groove 72. When the stopper 8 is in the locking groove 71, the lock is locked, and the locking beam 7 cannot move axially or rotate circumferentially. When the stopper 8 is in the unlocking ring groove 72, the lock is unlocked, and the locking beam 7 can rotate circumferentially and move axially to allow the stopper 8 to move into the locking groove 71. In this embodiment, the stopper 8 is a steel ball.

[0047] The present invention further includes a main board 20 and an NFC board 30 arranged in the lock body 1; the NFC board 30 and the lock beam 7 are respectively located at both ends of the lock body 1, and the motor 2 and the NFC board 30 are electrically connected to the main board 20.

[0048] Furthermore, the lock body 1 is provided with a first Hall switch 40 electrically connected to the main board 20, and the lock beam 7 is provided with a first magnet 50. When the lock is in the locked state, the first Hall switch 40 is connected to the first magnet 50. When the two are disconnected, it can be determined that the lock is unlocked, and the main board 20 can issue a "lock is open" working instruction to stop the motor 2.

[0049] At the same time, a second Hall switch 60 electrically connected to the main board 20 is provided in the lock body 1, and a second magnet 70 is provided in the rotating shaft 3; when the lock is in the locked state, the second Hall switch 60 is connected to the second magnet 70, and at this time the main board 20 can issue a "locked successfully" working instruction to stop the motor 2 from working.

[0050] refer to Figure 8 As shown, the emergency unlocking principle of the present utility model is:

[0051] When NFC cannot be used to unlock the lock, an external force can be used to open the easy-tear opening 131 of the lock body 1 to form an opening, and the sealing cover 9 can be taken out, and then the key a can be inserted and taken out to unlock the lock.

[0052] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. An electronic padlock structure, characterized in that: The invention comprises a lock body, a motor, a rotating shaft, a cam, a torsion spring and a lock core, a lock beam and a limiter, which are coaxially arranged on the lock body; The rotating shaft is in transmission connection with the motor; The cam is rotatably sleeved on the rotating shaft; The torsion spring is sleeved on the rotating shaft, and its two ends are respectively connected to the rotating shaft and the cam; A protrusion connected to the cam in transmission is provided on the end surface of the inner end of the lock core; The surface of the cam is provided with a movable groove for the projection to be inserted into; the projection is movably fitted between the two ends of the movable groove as the lock core rotates; The lock beam is installed outside the lock body; The limiting member is movably engaged in the lock body and is arranged opposite to the cam.

2. The electronic padlock structure according to claim 1, wherein: The lock body includes a motor base for fixing the motor, a lock body covering the motor base, a lock shell covering the lock body, and a bottom cover covering the bottom of the lock shell; a space is formed between the motor base and the lock body for coaxial installation of the motor, rotating shaft, cam, torsion spring and lock core; the limit member is movably fitted between the motor base and the opposite surfaces of the lock body.

3. The electronic padlock structure according to claim 1, wherein: The circumferential surface of the cam is provided with a stop angle for limiting the limiting member.

4. The electronic padlock structure according to claim 1, wherein: The protrusion is a rectangular parallelepiped rib, and the movable groove includes two symmetrically arranged arc grooves.

5. The electronic padlock structure according to claim 1, wherein: A sealing cover for covering the outer end of the lock core is provided in the lock body; a spring is provided in the lock body, and the spring abuts against the end surface of one end of the lock beam to provide elastic force to pop out the lock beam.

6. The electronic padlock structure according to claim 1 or 5, characterized in that: An easy-tear notch is formed at a position of the lock body opposite to the outer end of the lock core.

7. The electronic padlock structure according to claim 1, wherein: The circumferential surface of one end of the lock beam is provided with a locking groove and an unlocking ring groove for the movable cooperation of the limiting member. The locking groove is connected to the unlocking ring groove, and the depth of the locking groove is greater than the depth of the unlocking ring groove; the limiting member is a steel ball.

8. The electronic padlock structure according to claim 1, wherein: It also includes a main board and an NFC board arranged in the lock body; the NFC board and the lock beam are respectively located at two ends of the lock body, and the motor and the NFC board are electrically connected to the main board.

9. The electronic padlock structure according to claim 1, wherein: The lock body is provided with a main board and a first Hall switch electrically connected to the main board; the main board is electrically connected to the motor, and a first magnet is provided in the lock beam; when the lock is in a locked state, the first Hall switch is connected to the first magnet.

10. The electronic padlock structure according to claim 1, wherein: The lock body is provided with a main board and a second Hall switch electrically connected to the main board; the main board is electrically connected to the motor, and a second magnet is provided in the rotating shaft; when the lock is in a locked state, the second Hall switch is connected to the second magnet.

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