Electronic lock capable of preventing knocking and unlocking

Abstract

The present invention discloses an electronic lock that prevents knocking and unlocking, comprising a lock catch, a lock housing, and a power device, a rotating member, a connecting rod, a rocker arm, a stopper, a first reset member, and a second reset member disposed within the lock housing; the lock housing is provided with a lock hole; the middle portion of the rotating member is pivotally connected to the lock housing and provided with a protrusion, and the power device is used to drive the rotating member to rotate; the middle portion of the connecting rod is pivotally connected to the lock housing, one end of which movably engages with the protrusion, and the other end of which is provided with a movable groove; one end of the rocker arm is pivotally connected to the movable groove; the middle portion of the stopper is pivotally connected to the lock housing, one end of which is opposite to the other end of the rocker arm, and the other end of the stopper is provided with a lock groove, which movably engages with the lock hole as the stopper rotates; the lock catch movably engages with the lock hole and is inserted into the lock groove; the first reset member is disposed between the connecting rod and the rocker arm to reset the rocker arm toward the stopper; and the second reset member is disposed between the stopper and the lock housing to reset the lock groove toward the lock hole, thereby exposing the lock groove for insertion of the lock catch. The present invention can prevent knocking and unlocking, and has high security.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic locks, in particular to an electronic lock capable of preventing knocking and unlocking. Background Art

[0002] As living standards continue to improve, online shopping is becoming more and more popular, and the demand for temporary lockers such as express lockers is also increasing year by year. Correspondingly, the locks used in these lockers have also had a broader market.

[0003] Existing locker locks all use a combination of two levers, which are directly driven by an electromagnet or a motor to unlock. This method is too simple in structure and is easily unlocked by knocking. That is, after locking the locker, hitting the locker with a hammer will cause the internal components of the lock to vibrate and unlock, resulting in low security of the locker and failure to protect the user's property safety. Summary of the Invention

[0004] The object of the present invention is to provide an electronic lock that is resistant to knocking and unlocking, which can prevent knocking and unlocking and improve the safety performance of the lock.

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

[0006] An electronic lock that is resistant to knocking and unlocking, comprising a lock catch, a lock shell, and a power device, a rotating member, a connecting rod, a rocker arm, a stopper, a reset member 1 and a reset member 2 arranged in the lock shell; the lock shell is provided with a lock hole; the middle portion of the rotating member is rotatably connected to the lock shell, and a protrusion is provided on it; the power device is used to drive the rotating member to rotate; the middle portion of the connecting rod is rotatably connected to the lock shell, one end of which is movably matched with the protrusion, and the other end of which is provided with a movable groove; one end of the rocker arm is rotatably connected to the movable groove; the middle portion of the stopper is rotatably connected to the lock shell, one end of which is arranged opposite to the other end of the rocker arm, and the other end of the stopper is provided with a A lock slot is provided, and the lock slot is engaged with the lock hole as the stop block rotates; the lock buckle is engaged with the lock hole and inserted into the lock slot; the reset member 1 is arranged between the connecting rod and the rocker arm to reset the rocker arm toward the stop block; when the lock buckle is inserted into the lock slot, the stop block is driven to rotate, and one end of the stop block pushes away the other end of the rocker arm, and the reset member 1 repeatedly resets the rocker arm and presses against one end of the stop block, and the stop block can no longer rotate; the reset member 2 is arranged between the stop block and the lock housing to reset the lock slot of the stop block toward the lock hole so as to expose the lock slot for the lock buckle to be inserted.

[0007] The power device is a motor, and a worm is provided on its output shaft; the rotating part is a cam, and teeth and the protrusion are respectively provided at both ends of the cam, and the teeth are engaged with the worm; the lock housing is provided with a first pivot shaft, and a first shaft hole is provided in the middle of the cam, and the first shaft hole is sleeved on the first pivot shaft, and a first bearing is provided between the first shaft hole and the first pivot shaft.

[0008] The top end of the protrusion is configured as an arc surface, and one end of the connecting rod that cooperates with the protrusion is provided with a second bearing, and the second bearing is rotatably connected to the end of the connecting rod.

[0009] The lock housing is provided with a second pivot shaft, the middle part of the connecting rod is provided with a second shaft hole, the second shaft hole is sleeved on the second pivot shaft, and a third bearing is provided between the second shaft hole and the second pivot shaft.

[0010] The lock housing is provided with a third pivot shaft, and the middle part of the stopper is provided with a third shaft hole, and the third shaft hole is sleeved on the third pivot shaft.

[0011] The movable slot is provided with a fourth pivot shaft, and one end of the rocker arm is sleeved on the fourth pivot shaft.

[0012] The other end of the rocker is provided with a sliding inclined surface.

[0013] A fourth bearing is provided at the end of the stopper opposite to the rocker arm. The fourth bearing is rotatably connected to the end of the stopper and is slidably matched with the sliding inclined surface.

[0014] The electronic lock with anti-knock unlocking function also includes a mounting base arranged in the lock housing, and the mounting base is used to install the motor; a corner of the mounting base opposite to the cam is provided with a boss for the convex block to cooperate with, and the boss is used to limit the convex block.

[0015] The lock housing is provided with a limiting column arranged opposite to the stopper, which is used to limit the maximum angle of the stopper to be reset.

[0016] After adopting the above technical solution, the elastic force of the reset member 1 of the present invention can be designed according to the needs, and the size of the elastic force of the reset member 1 will not affect the driving force of the power device required for unlocking, and when the elastic force of the reset member 1 is designed to be large enough, the problem of the rocker arm tilting and unlocking due to knocking vibration can be completely avoided; the biggest advantage of using the electronic lock of the present invention compared with other express cabinet electronic locks is that it can prevent unlocking by knocking. At the same time, it also has the advantages of other express cabinet electronic locks: simple structure, unlocking when power is turned on, and the door can be closed and locked at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1A three-dimensional diagram of an unlocked state of a specific embodiment of the present invention;

[0018] Figure 2 A three-dimensional diagram of a locked state of a specific embodiment of the present invention;

[0019] Figure 3 An exploded view of a specific embodiment of the present invention;

[0020] Figure 4 A perspective view of a rotating member according to a specific embodiment of the present invention;

[0021] Figure 5 A perspective view of a connecting rod according to a specific embodiment of the present invention;

[0022] Figure 6 A partial structural perspective diagram of the locking process according to a specific embodiment of the present invention;

[0023] Figure 7 This is a structural diagram of a locking completion state in a specific embodiment of the present invention;

[0024] Figure 8 This is a structural diagram of the unlocking process according to a specific embodiment of the present invention;

[0025] Figure 9 This is a partial structural perspective view of a specific embodiment of the present invention in an unlocking completion state;

[0026] Description of Figure Numbers:

[0027] 1--Lock catch; 2--Lock housing; 2A---Lock hole;

[0028] 2B---first pivot axis; 2C---second pivot axis; 2D---third pivot axis;

[0029] 2E---limiting column; 3----power device; 3A---worm;

[0030] 4----rotating part; 4A---tooth; 4B---bump;

[0031] 4C---first axis hole; 4D---arc surface; 5----connecting rod;

[0032] 5A---movable slot; 5B---second axis hole; 5C---fourth pivot axis;

[0033] 6----rocker; 6A---sliding inclined plane; 7----stopper;

[0034] 7A---Lock slot; 7B---Third axis hole; 8----Reset piece 1;

[0035] 9----Reset member 2; 10---First bearing; 11---Second bearing;

[0036] 12---third bearing; 13--fourth bearing; 14---mounting seat;

[0037] 14A--Boss. DETAILED DESCRIPTION

[0038] To further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments. The directional descriptions below, such as "up, down, left, right," "clockwise," and "counterclockwise," are intended to facilitate understanding of the structure and principles of the solution. The directions in the accompanying drawings should be used as a reference. These descriptions do not constitute exclusive directional limitations on the structure and function of the product components. Modifications to the solution of the present invention, such as simple component placement and movement directions, should be understood to fall within the scope of protection of the present invention.

[0039] The present invention is an electronic lock that is anti-knock unlocking, comprising a lock buckle 1, a lock shell 2, and a power device 3, a rotating part 4, a connecting rod 5, a rocker arm 6, a stopper 7, a reset part 1 8 and a reset part 2 9 arranged in the lock shell 2.

[0040] The lock housing 2 is provided with a lock hole 2A;

[0041] The middle portion of the rotating member 4 is rotatably connected to the lock housing 2 and is provided with a protrusion 4B; the power device 3 is used to drive the rotating member 4 to rotate;

[0042] The middle portion of the connecting rod 5 is rotatably connected to the lock housing 2, one end of the connecting rod 5 is movably engaged with the protrusion 4B, and the other end is provided with a movable groove 5A;

[0043] One end of the rocker arm 6 is rotatably connected to the movable slot 5A;

[0044] The middle portion of the stopper 7 is rotatably connected to the lock housing 2, and one end of the stopper 7 is arranged opposite to the other end of the swing rod 6. The other end of the stopper 7 is provided with a lock groove 7A, which is engaged with the lock hole 2A as the stopper 7 rotates.

[0045] The lock buckle 1 is movably fitted in the lock hole 2A and inserted into the lock slot 7A;

[0046] The reset member 8 is provided between the connecting rod 5 and the rocking rod 6 to reset the rocking rod 6 toward the stopper 7. When the lock catch 1 is inserted into the lock slot 7A, the stopper 7 is driven to rotate. One end of the stopper 7 pushes away the other end of the rocking rod 6. The reset member 8 then resets the rocking rod 6 and presses against one end of the stopper 7, preventing the stopper 7 from rotating further.

[0047] The second reset member 9 is provided between the stopper 7 and the lock housing 2 to reset the lock groove 7A of the stopper 7 toward the lock hole 2A so as to expose the lock groove 7A for the lock buckle 1 to be inserted.

[0048] refer to Figures 1 to 9 FIG. 1 shows a specific embodiment of the present invention.

[0049] The power device 3 is a motor, whose output shaft is provided with a worm 3A; the rotating member 4 is a cam, whose ends are respectively provided with teeth 4A and protrusions 4B, with the teeth 4A meshing with the worm 3A; the lock housing 2 is provided with a first pivot shaft 2B, and the middle portion of the cam is provided with a first axial hole 4C, which is sleeved on the first pivot shaft 2B, and a first bearing 10 is provided between the first axial hole 4C and the first pivot shaft 2B to achieve a rotational connection between the cam and the lock housing 2. The first bearing 10 can reduce the frictional resistance between the cam and the first pivot shaft 2B, making the cam rotate more smoothly. The power device 3 uses a motor and has a worm 3A on its output shaft, which can achieve self-locking, can limit the rotation of the cam during the vibration of the lock due to being struck, and further prevent the lock from being unlocked by being struck.

[0050] The top end of the above-mentioned protrusion 4B is set as an arc surface 4D, and a second bearing 11 is set at one end of the connecting rod 5 that cooperates with the protrusion 4B. The second bearing 11 is rotatably connected to the end of the connecting rod 5. The second bearing 11 can reduce the friction resistance between the connecting rod 5 and the rotating part 4 (that is, the protrusion 4B).

[0051] The above-mentioned lock housing 2 is provided with a second pivot shaft 2C, and a second axial hole 5B is provided in the middle of the connecting rod 5. The second axial hole 5B is sleeved on the second pivot shaft 2C, and a third bearing 12 is provided between the second axial hole 5B and the second pivot shaft 2C to realize the rotational connection between the connecting rod 5 and the lock housing 2. The third bearing 12 can reduce the friction resistance between the connecting rod 5 and the second pivot shaft 2C, so that the rotation of the connecting rod 5 is smoother.

[0052] The lock housing 2 is provided with a third pivot shaft 2D, and a third shaft hole 7B is provided in the middle of the stopper 7. The third shaft hole 7B is sleeved on the third pivot shaft 2D to realize the rotation connection between the stopper 7 and the lock housing 2.

[0053] The movable groove 5A is provided with a fourth pivot axis 5C, and one end of the swing rod 6 is sleeved on the fourth pivot axis 5C to achieve rotational cooperation between the swing rod 6 and the connecting rod 5 .

[0054] The other end of the rocker arm 6 is provided with a sliding bevel 6A. Due to varying product sizes, the positioning of the connecting rod 5 and the rocker arm 6 may vary. The force exerted by the stopper 7 on the sliding bevel 6A is always perpendicular to the surface. To ensure the position-limiting function, the angle of the sliding bevel 6A only needs to ensure that the force is directed between the second pivot axis 2C and the fourth pivot axis 5C.

[0055] A fourth bearing 13 is provided at the end of the stopper 7 opposite to the rocker arm 6. The fourth bearing 13 is rotatably connected to the end of the stopper 7. The fourth bearing 13 can reduce the friction resistance between the stopper 7 and the rocker arm 6. The fourth bearing 13 is slidably fitted on the sliding inclined surface 6A. When the connecting rod 5 is rotatable, the fourth bearing 13 pushes the sliding inclined surface 6A upward as the stopper 7 rotates, so that the rocker arm 6 drives the connecting rod 5 to swing and give way, so that the stopper 7 can be rotated to realize the disengagement of the lock buckle 1 from the lock groove 7A.

[0056] The present invention further includes a mounting base 14 disposed within the lock housing 2 for mounting the power unit 3. In this embodiment, a boss 14A is provided at a corner of the mounting base 14 opposite the rotating member 4, which engages with the projection 4B. The projection 14A serves to position the projection 4B, thereby limiting the rotation angle of the rotating member 4.

[0057] The lock housing 2 is provided with a limiting column 2E arranged opposite to the stopper 7, which is used to limit the maximum angle of the stopper 7 to be reset, so as to prevent the stopper 7 from rotating excessively under the action of the reset member 2 9 and leaving the proper working position.

[0058] Of the two side walls of the lock slot 7A, the end close to the lock buckle 1 is shorter so that the stopper 7 can be reset to this end and swing upward as far away from the lock hole 2A as possible, so that the lock slot 7A is exposed and the lock buckle 1 can be inserted.

[0059] According to the direction in the accompanying drawings, the lock hole 2A is arranged on the left side of the lock shell 2, the power device 3 is installed on the right side inside the lock shell 2, the pivot joint of the rotating member 4 (i.e., the first pivot axis 2B) is arranged above the worm 3A, the pivot joint of the connecting rod 5 (i.e., the second pivot axis 2C) is arranged above the power device 3, the rocker arm 6 is arranged at the left end of the connecting rod 5, and the pivot joint of the stop block 7 (i.e., the fourth pivot axis 5C) is arranged above the lock hole 2A and on the left side of the power device 3. This direction design makes use of the space inside the lock shell 2 as much as possible to achieve a reduced product volume design.

[0060] The reset member 1 8 and reset member 2 9 can be elastic mechanisms such as torsion springs, springs, and tension springs.

[0061] refer to Figure 6 and Figure 7 As shown, the locking principle of the present invention is as follows:

[0062] When the lock catch 1 is inserted into the lock hole 2A, the stopper 7 is driven to rotate, and the fourth bearing 13 installed on the stopper 7 pushes the rocker rod 6. When the lock catch 1 is pushed to the bottom, the rocker rod 6 rebounds to the bottom under the action of the reset member 8. At this time, the fourth bearing 13 is blocked on the side of the rocker rod 6, and the lock catch 1 cannot be pulled out, and the locking is completed; when trying to pull out the lock catch 1, the fourth bearing 13 on the stopper 7 will make the rocker rod 6 have a tendency to rotate counterclockwise around its own rotation axis, but due to the limiting effect of the connecting rod 5, the rocker rod 6 has reached the limit position and can no longer rotate counterclockwise around its own rotation axis. At this time, the rocker rod 6 and the connecting rod 5 can be regarded as a whole. In addition, the fourth bearing 13 on the stopper 7 allows the connecting rod 5 to have a tendency to rotate clockwise around its own rotation axis through the rocker rod 6, but the second bearing 11 on the connecting rod 5 has been blocked by the cam's protrusion 4B, and the connecting rod 5 can no longer rotate clockwise. Therefore, the lock catch 1 cannot be pulled out at this time.

[0063] refer to Figure 8 and Figure 9 As shown, the unlocking principle of the present invention is as follows:

[0064] When the cam is in the limit position, the motor will stop rotating, and the stopper 7 will push the rocker arm 6 and the connecting rod 5 to rotate clockwise together under the action of the reset member 2 9. During the rotation process, due to the action of the reset member 1 8, the rocker arm 6 is always in close contact with the connecting rod 5. The rocker arm 6 does not move relative to the connecting rod 5. After the rocker arm 6 and the connecting rod 5 rotate clockwise by a certain angle, the rocker arm 6 no longer has a limiting effect on the stopper 7. At this time, the stopper 7 will continue to rotate clockwise, pushing the lock buckle 1 out to unlock, and the limiting column 2E on the lock shell 2 has a limiting effect on the stopper 7. The above action will be completed during the period of motor stalling. After the motor stalls for a certain period of time, the motor is reversed to drive the cam to rotate clockwise until the cam stops at the limit position. After the motor stalls for a certain period of time, the system stops powering the motor. At this point, the unlocking is completed, and the lock is restored to the state of waiting for the next lock.

[0065] Through the above scheme, the elastic force of the reset member 8 of the present invention can be designed according to the needs, and the size of the elastic force of the reset member 8 will not affect the driving force of the power device 3 required for unlocking, and when the elastic force of the reset member 8 is designed to be large enough, the problem of the rocker arm 6 tilting and unlocking due to knocking vibration can be completely avoided; the biggest advantage of using the electronic lock of the present invention compared with other express cabinet electronic locks is that it can prevent unlocking by knocking. At the same time, it also has the advantages of other express cabinet electronic locks: simple structure, unlocking when power is turned on, and the door can be closed and locked at any time.

[0066] 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 lock that is resistant to knocking, characterized by: It includes a lock buckle, a lock housing, and a power device, a rotating member, a connecting rod, a rocker arm, a stopper, a first reset member, and a second reset member arranged in the lock housing; The lock housing is provided with a lock hole; The middle portion of the rotating member is rotatably connected to the lock housing and is provided with a protrusion; the power device is used to drive the rotating member to rotate; The middle portion of the connecting rod is rotatably connected to the lock housing, one end of the connecting rod is movably engaged with the protrusion, and the other end of the connecting rod is provided with a movable groove; One end of the swing rod is rotatably connected to the movable groove; The middle portion of the stopper is rotatably connected to the lock housing, and one end of the stopper is arranged opposite to the other end of the swing rod. The other end of the stopper is provided with a lock groove, and the lock groove is movably engaged with the lock hole as the stopper rotates; The lock buckle is movably fitted in the lock hole and inserted into the lock slot; The reset member is arranged between the connecting rod and the rocking rod to reset the rocking rod toward the stopper; when the lock buckle is inserted into the lock slot, the stopper is driven to rotate, and one end of the stopper pushes away the other end of the rocking rod. The reset member repeatedly resets the rocking rod and presses against one end of the stopper, so that the stopper cannot rotate any further; The second reset member is arranged between the stopper and the lock housing to reset the lock slot of the stopper toward the lock hole so as to expose the lock slot for the lock buckle to be inserted.

2. The electronic lock with anti-knock unlocking function according to claim 1, characterized in that: The power device is a motor, and a worm is provided on its output shaft; the rotating part is a cam, and teeth and the protrusion are respectively provided at both ends of the cam, and the teeth are engaged with the worm; the lock housing is provided with a first pivot shaft, and a first shaft hole is provided in the middle of the cam, and the first shaft hole is sleeved on the first pivot shaft, and a first bearing is provided between the first shaft hole and the first pivot shaft.

3. The electronic lock with anti-knock unlocking function according to claim 1, characterized in that: The top end of the protrusion is configured as an arc surface, and one end of the connecting rod that cooperates with the protrusion is provided with a second bearing, and the second bearing is rotatably connected to the end of the connecting rod.

4. The electronic lock with anti-knock unlocking function according to claim 1, characterized in that: The lock housing is provided with a second pivot shaft, the middle part of the connecting rod is provided with a second shaft hole, the second shaft hole is sleeved on the second pivot shaft, and a third bearing is provided between the second shaft hole and the second pivot shaft.

5. The electronic lock with anti-knock unlocking function according to claim 1, characterized in that: The lock housing is provided with a third pivot shaft, and the middle part of the stopper is provided with a third shaft hole, and the third shaft hole is sleeved on the third pivot shaft.

6. The electronic lock with anti-knock unlocking function according to claim 1, characterized in that: The movable slot is provided with a fourth pivot shaft, and one end of the rocker arm is sleeved on the fourth pivot shaft.

7. The electronic lock with anti-knock unlocking function according to claim 1, characterized in that: The other end of the rocker is provided with a sliding inclined surface.

8. The electronic lock with anti-knock unlocking function according to claim 7, characterized in that: A fourth bearing is provided at the end of the stopper opposite to the rocker arm. The fourth bearing is rotatably connected to the end of the stopper and is slidably matched with the sliding inclined surface.

9. The electronic lock with anti-knock unlocking function according to claim 2, characterized in that: It also includes a mounting seat arranged in the lock housing, the mounting seat is used to install the motor; a corner of the mounting seat opposite to the cam is provided with a boss for the convex block to cooperate with, and the boss is used to limit the convex block.

10. The electronic lock with anti-knock unlocking function according to claim 1, characterized in that: The lock housing is provided with a limiting column arranged opposite to the stopper, which is used to limit the maximum angle of the stopper to be reset.

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