CN109763706B - Lock and sharing bicycle - Google Patents
Lock and sharing bicycle Download PDFInfo
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- CN109763706B CN109763706B CN201711108253.0A CN201711108253A CN109763706B CN 109763706 B CN109763706 B CN 109763706B CN 201711108253 A CN201711108253 A CN 201711108253A CN 109763706 B CN109763706 B CN 109763706B
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Abstract
The invention belongs to the technical field of safety anti-theft devices, and relates to a lock and a shared bicycle, wherein the lock comprises a shell, a lock rod, an unlocking holding mechanism, a lock catch and a driving mechanism, wherein a lock opening for inserting a locked object into the shell is formed on the shell, one end of the lock rod is rotatably connected to the shell and is positioned on one side of the lock opening, and the lock catch is arranged on the shell and is positioned on the other side of the lock opening; when an unlocking signal is received, the driving mechanism drives the lock catch to move to the unlocking position so as to unlock the lock rod, and the lock rod rotates to the unlocking position under the action of gravity. Compared with the prior art, the lock provided by the embodiment of the invention does not need to be provided with a tension spring to return the lock rod, the unlocking and locking are safe and reliable, and the use life of the lock is prolonged.
Description
Technical Field
The invention belongs to the technical field of safety anti-theft devices, and particularly relates to a lock and a shared bicycle.
Background
The existing shared bicycle lock comprises a lock opening, a lock pin, a lock tongue, a tension spring, a motor driving module and a lock tongue driving component, wherein a blocking groove is formed in the lock pin, the lock pin opens or closes the lock opening through self movement, the lock tongue blocks or releases movement of the lock pin through the blocking groove which enters or exits the lock pin, the tension spring is used for endowing the lock pin with force moving towards an unlocking direction, and the spring is used for endowing the lock tongue with force entering the blocking groove of the lock pin. The motor driver receives an instruction signal from the CPU and controls the rotation of the output shaft of the motor. The latch driving mechanism is connected to an output shaft of the motor for converting a rotational driving force of the motor into a driving force for moving the latch out of the catch groove of the lock pin. The bolt driving component adopts a crank component, one end of the crank component is connected with an output shaft of the motor, a convex handle inserted into a driving hole formed on the bolt is formed at the other end of the crank component, and when the output shaft of the motor rotates, the convex handle is driven to rotate along a circular track taking the eccentricity as the radius.
The unlocking process of the shared bicycle lock is as follows:
when the lock tongue is positioned in the blocking groove of the lock pin, the convex handle of the crank member is standby at a non-stop block in the driving hole;
when the lock is to be unlocked, the convex handle of the crank member is blocked by the block when rotating to the position of the block in the driving hole, the convex handle pushes the block to continue rotating, so that the lock tongue is driven to move towards the direction moving out of the blocking groove, and at the moment, the spring which gives the force entering the blocking groove of the lock pin to the lock tongue is compressed; when the convex handle continues to rotate and then passes the blocking of the stop block, the lock pin loses the force moving out of the blocking groove, so that the lock pin moves towards the direction of entering the blocking groove of the lock pin under the force given by the spring until the lock pin abuts against the lock pin, the lock pin is displaced to an unlocking state under the action of the tension spring at the moment, the blocking groove moves to a position which does not correspond to the lock tongue, the lock pin abuts against the non-blocking groove part of the lock pin, and at the moment, the convex handle of the crank member rotates back to the first position for standby.
The locking process of the shared bicycle lock is as follows:
when the lock pin is pulled towards the locking direction and the blocking groove moves to the position corresponding to the lock tongue along with the movement of the lock pin, the lock tongue enters the blocking groove under the thrust of the spring and blocks the movement of the lock pin, so that the locking is completed.
Therefore, when the existing shared bicycle lock is locked, the tension spring is in a stretching state, and when the bicycle lock is unlocked, the lock pin is driven to return through the return of the tension spring, so that the bicycle lock is unlocked. However, after the tension spring is used for many times, the end of the tension spring is easy to deform, and the lock is easy to lose efficacy.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a lock and sharing bicycle to the easy technical problem that warp of extension spring end department of current sharing bicycle lock, easily lead to the lock to become invalid.
In order to solve the above technical problems, in one aspect, an embodiment of the present invention provides a lock, including a housing, a lock rod, an unlocking holding mechanism, a lock catch and a driving mechanism, wherein a lock notch for inserting an object to be locked into the housing is formed on the housing, one end of the lock rod is rotatably connected to the housing and is located on one side of the lock notch, and the lock catch is arranged on the housing and is located on the other side of the lock notch;
the unlocking holding mechanism can be changed from a holding state to an unlocking state, in the holding state, the unlocking holding mechanism holds the lock rod at an unlocking position, and the lock rod opens the lock opening to release the locked object; in the release state, the lock rod can rotate from the unlocking position to the locking position under the action of external force;
when the lock rod rotates from the unlocking position to the locking position, the driving mechanism drives the lock catch to move to the locking position to lock the lock rod, the lock rod closes the lock opening to lock the locked object, and the lock enters a locking state;
when receiving the signal of unblanking under the shutting state, actuating mechanism drives the hasp moves to the unblock position in order to relieve right the locking of locking lever, the locking lever under the action of gravity gyration extremely the position of unblanking.
Optionally, the unlocking holding mechanism comprises a stop lever and a torsion spring, a push button is arranged at one end of the lock lever corresponding to the stop lever, the stop lever is rotatably connected to the lock lever through a stop lever rotating shaft, the torsion spring is sleeved on the stop lever rotating shaft, one end of the torsion spring is fixedly connected to the stop lever, the other end of the torsion spring is fixedly connected to the lock lever, a buckling position is arranged on the shell, and a buckling claw is formed at the inner end of the stop lever;
in the unlocking position, the buckling claw is buckled with the buckling position so as to maintain the unlocking holding mechanism in the holding state;
in the holding state, the catch claw can be separated from the catch position by rotating the stop lever, so that the unlocking holding mechanism is changed from the holding state to the releasing state;
in the release state, the lock rod can be rotated from the unlocking position to the locking position by rotating the push button.
Optionally, a sliding groove is formed in the housing, and the lock catch can slide back and forth between the locking position and the unlocking position along the sliding groove under the driving of the driving mechanism;
in the locking position, the lock catch abuts against the lock rod to lock the lock rod; in the unlocking position, the lock catch is separated from the lock rod to unlock the lock rod.
Optionally, the lock catch comprises an oblique sliding part and a horizontal locking part, the driving mechanism is connected to the upper end of the oblique sliding part, and the horizontal locking part is connected to the lower end of the oblique sliding part;
in the locking position, the horizontal locking part abuts against the lock rod to lock the lock rod, and at the moment, the lock rod is kept horizontal;
when receiving the signal of unblanking under the shutting state, actuating mechanism drives slant portion of sliding slides to the lapse, makes the end of horizontal locking portion is to keeping away from the direction of fore shaft removes horizontal locking portion breaks away from behind the locking lever, the locking lever is turned around extremely under the action of gravity the position of unblanking.
Optionally, the driving mechanism includes a motor, a driving wheel and a transmission rod, the motor is fixed in the housing, the driving wheel is fixedly connected to an output shaft of the motor, an upper end of the transmission rod is hinged to an edge of the driving wheel, and a lower end of the transmission rod is hinged to the lock catch.
Optionally, the housing includes a face shell and a bottom shell that are fastened to each other, an accommodating cavity is formed between the face shell and the bottom shell, the latch and the driving mechanism are accommodated in the accommodating cavity, and the driving mechanism is fixed to the face shell.
Optionally, the positions of the shell on the two sides of the locking notch are respectively formed into a first arm and a second arm, the lower end of the first arm is provided with a first notch, the lower end of the second arm is provided with a second notch, and one end of the locking rod is located in the first notch and is rotatably connected to the face shell through a locking rod rotating shaft;
in the locking position, the other end of the lock rod is inserted into the second notch;
in the unlocked position, the other end of the locking bar falls vertically.
Optionally, the housing further includes an inner chamber disposed in the accommodating cavity, and the inner chamber is provided with a communication component, a main board and a battery.
Optionally, a sensor for detecting the position of the lock rod is arranged in the housing, when the lock rod rotates to the locking position, the sensor sends a detection signal to the driving device, and the driving device drives the lock catch to move to the locking position based on the detection signal.
According to the lock provided by the embodiment of the invention, when the unlocking signal is received in the locking state, the driving mechanism drives the lock catch to move to the unlocking position so as to unlock the lock rod, and the lock rod rotates to the unlocking position under the action of gravity. Compared with the prior art, need not set up the extension spring and carry out the return to the locking lever promptly, unblank and shutting safe and reliable, prolonged the use of lock and acted as a go.
On the other hand, the embodiment of the invention also provides a sharing bicycle which comprises the lock.
Drawings
FIG. 1 is a perspective view of a lock provided in accordance with one embodiment of the present invention;
FIG. 2 is an exploded view of a lock provided in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of a lock according to an embodiment of the present invention in an unlocked state;
FIG. 4 is another perspective view of FIG. 3;
FIG. 5 is a schematic view of a lock provided in accordance with an embodiment of the present invention in a locked state;
FIG. 6 is another perspective view of FIG. 5;
fig. 7 is a view illustrating a locking position of a lock catch according to an embodiment of the present invention.
The reference numerals in the specification are as follows:
1. a housing; 11. locking the opening; 12. a face shell; 13. a bottom case; 14. a first arm; 141. a first notch; 15. a second arm; 151. a second notch; 16. an inner bin; 17. buckling; 18. a chute; 2. a lock lever; 21. a push button; 3. locking; 31. an oblique sliding part; 32. a horizontal locking part; 4. a lock lever rotating shaft; 5. a stop lever; 51. buckling claws; 6. a torsion spring; 7. a stop lever rotating shaft; 8. a motor; 9. a driving wheel; 10. and a transmission rod.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 7, a lock according to an embodiment of the present invention includes a housing 1, a lock lever 2, an unlock holding mechanism, a lock catch 3, and a driving mechanism, wherein a lock notch 11 for inserting an object to be locked (e.g., a front wheel or a rear wheel of a bicycle) into the housing 1 is formed in the housing 1, one end of the lock lever 2 is rotatably connected to the housing 1 and is located at one side of the lock notch 11, and the lock catch 3 is disposed on the housing 1 and is located at the other side of the lock notch 11.
The unlocking holding mechanism can be changed from a holding state to an unlocking state, in the holding state (as shown in fig. 3), the unlocking holding mechanism holds the lock rod 2 at an unlocking position, and the lock rod 2 opens the locking notch 11 to release the object to be locked; in the release state, the lock lever 2 is rotatable by an external force from the unlock position shown in fig. 3 to the lock position shown in fig. 5.
When the lock rod 2 rotates from the unlocking position to the locking position, the driving mechanism drives the lock catch 3 to move to the locking position to lock the lock rod 2, the lock rod 2 closes the lock opening 11 to lock the locked object, and the lock enters the locking state.
When receiving unlocking signal under the locking state (unlocking signal can be sent by outside mobile device), actuating mechanism drives 3 motion of hasp to the unblock position is in order to relieve right locking of locking lever 2, locking lever 2 is turned around under the action of gravity extremely the position of unblanking.
In one embodiment, as shown in fig. 1 and 2, the housing 1 includes a front shell 12 and a bottom shell 13 that are fastened to each other, an accommodating cavity is formed between the front shell 12 and the bottom shell 13, the latch 3 and the driving mechanism are accommodated in the accommodating cavity, and the driving mechanism is fixed on the front shell 12.
As shown in fig. 1, 4 and 6, the housing 1 is located the positions of two sides of the locking opening 11 are respectively formed into a first arm 14 and a second arm 15, the lower end of the first arm 14 is provided with a first notch 141, the lower end of the second arm 15 is provided with a second notch 151, and one end of the locking rod 2 is located in the first notch 141 and is rotatably connected to the face shell 12 through a locking rod rotating shaft 4.
As shown in fig. 1, in the locking position, the other end of the lock lever 2 is inserted into the second notch 151, and the lock lever 2 is kept horizontal. As shown in fig. 6, in the unlock position, the other end of the lock lever 2 is vertically dropped, and the lock lever 2 is kept vertical by the unlock holding mechanism.
As shown in fig. 2, the housing 1 further includes an inner chamber 16 disposed in the accommodating cavity, and the inner chamber 16 is provided with communication components, a motherboard, and a battery, which are not shown in the figure.
In an embodiment, a sensor (not shown in the figure) for detecting the position of the lock rod 2 is disposed in the housing 1, and when the lock rod 2 rotates to the locking position, the sensor sends a detection signal to the driving device, and the driving device drives the lock catch 3 to move to the locking position based on the detection signal.
In an embodiment, as shown in fig. 1 and 2, the unlocking holding mechanism includes a blocking rod 5 and a torsion spring 6, the locking rod 2 is provided with a push button 21 corresponding to one end of the blocking rod 5, the blocking rod 5 is rotatably connected to the locking rod 2 through a blocking rod rotating shaft 7, the torsion spring 6 is sleeved on the blocking rod rotating shaft 7, one end of the torsion spring 6 is fixedly connected to the blocking rod 5, and the other end of the torsion spring 6 is fixedly connected to the locking rod 2.
As shown in fig. 7, the housing 1 (the face shell 12) is provided with a fastening position 17, and the inner end of the catch lever 5 is formed with a fastening claw 51. In the unlocking position, the locking claw 51 is locked to the locking position 17, so that the unlocking holding mechanism is maintained in the holding state.
In the holding state, the latch holding mechanism can be changed from the holding state to the releasing state by rotating the lever 5 (for example, by pinching the end of the lever 5 and rotating the lever 5 counterclockwise by a certain angle) to separate the catch pawl 51 from the catch 17.
In the release state, the lock lever 2 can be rotated from the unlock position to the lock position by rotating the push button 21 (e.g., pressing the push button 21 downward).
As shown in fig. 3 and 5, a sliding slot 18 is disposed on the housing 1, and the lock catch 3 can slide back and forth between the locking position and the unlocking position along the sliding slot 18 under the driving of the driving mechanism.
In the locking position, the lock catch 3 abuts against the lock lever 2 to lock the lock lever 2 (i.e., to restrict the rotation of the lock lever 2); in the unlocking position, the lock catch 3 is separated from the lock lever 2 to unlock the lock lever 2.
In one embodiment, as shown in fig. 3 and 5, the latch 3 includes an oblique sliding portion 31 and a horizontal locking portion 32, the driving mechanism is connected to an upper end of the oblique sliding portion 31, and the horizontal locking portion 32 is integrally formed or fixedly connected to a lower end of the oblique sliding portion 31.
In the lock position, the horizontal lock portion 32 abuts against the lock lever 2 to lock the lock lever 2, and at this time, the lock lever 2 is kept horizontal.
When receiving the signal of unblanking under the shutting state (for example the communication part receives the signal of unblanking that the user sent), actuating mechanism drives slant portion 31 of sliding slides to the downside for horizontal locking portion 32's end is to keeping away from the direction of fore shaft 11 is removed horizontal locking portion 32 breaks away from behind locking lever 2, locking lever 2 is turned round extremely under the action of gravity the unlocking position.
In a preferred embodiment, as shown in fig. 2, 3 and 5, the driving mechanism includes a motor 8, a driving wheel 9 and a transmission rod 10, the motor 8 is fixed in the housing 1 (on the face shell 12), the driving wheel 9 is fixedly connected to an output shaft of the motor 8, an upper end of the transmission rod 10 is hinged to an edge position of the driving wheel 9, and a lower end of the transmission rod 10 is hinged to the latch 3.
The lock of the embodiment of the invention has the following working process:
in the unlocking state shown in fig. 3, the user holds the end of the blocking lever 5, so that the blocking lever 5 is forced to rotate counterclockwise by a certain angle, the blocking lever 5 is separated from the catch 17 on the face shell 12, and the torsion spring 6 is forced to deform. Then, the user applies a vertically downward force to the end of the push button 21, so that the lock lever 2 moves to be horizontal, the lock lever 2 rotates to the locking position, and the sensor is triggered. The sensor sends the detected signal for motor 8, and motor 8 receives the detected signal that is located the sensor and sends, drives drive wheel 9 and rotates half a circle, and transfer line 10 moves to extreme position along with drive wheel 9, drives hasp 3 linear motion upwards to one side in spout 18, hasp 3 with locking lever 2 supports to lean on with lock locking lever 2, and the clockwise rotary motion of restriction locking lever 2 accomplishes the shutting (gets into the shutting state promptly).
In the locking state shown in fig. 5, the processor on the main board communicates with the outside through the communication part to receive an unlocking signal, when the unlocking signal is received, the motor 8 drives the transmission wheel 9 to rotate for half a turn, the transmission rod 10 moves to the initial position along with the transmission wheel 9 to drive the lock catch 3 to move linearly in the chute 18 obliquely and downwards, at this time, the lock rod 2 rotates clockwise under the action of gravity, and when the end of the stop lever 5 contacts the catch 17 on the face shell 12, the lock is completed under the action of the torsion spring 6 to keep the lock rod 2 at the unlocking position.
Compared with the prior art, the lock provided by the embodiment of the invention does not need to be provided with a tension spring to return the lock rod, the unlocking and locking are safe and reliable, and the use life of the lock is prolonged. In addition, the sliding of the lock catch is controlled by the motor, the structure is simple, and the work is stable.
In addition, in other embodiments, the drive mechanism may take other forms, such as a solenoid valve. At the moment, the lock catch is directly driven by the solenoid valve to slide between the locking position and the unlocking position.
In addition, the invention further provides a sharing bicycle which comprises the lock of the embodiment. The lock can be installed under the rear of the shared bicycle seat or under the handlebar to lock the front and rear wheels.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A lock is characterized by comprising a shell, a lock rod, an unlocking holding mechanism, a lock catch and a driving mechanism, wherein a lock opening for inserting an object to be locked into the shell is formed in the shell;
the unlocking holding mechanism can be changed from a holding state to an unlocking state, in the holding state, the unlocking holding mechanism holds the lock rod at an unlocking position, and the lock rod opens the lock opening to release the locked object; in the release state, the lock rod can rotate from the unlocking position to the locking position under the action of external force;
when the lock rod rotates from the unlocking position to the locking position, the driving mechanism drives the lock catch to move to the locking position to lock the lock rod, the lock rod closes the lock opening to lock the locked object, and the lock enters a locking state;
when an unlocking signal is received in the locking state, the driving mechanism drives the lock catch to move to an unlocking position so as to unlock the lock rod, and the lock rod rotates to the unlocking position under the action of gravity;
the unlocking holding mechanism comprises a stop lever and a torsional spring, wherein a push button is arranged at one end of the lock lever, which corresponds to the stop lever, the stop lever is rotatably connected to the lock lever through a stop lever rotating shaft, the torsional spring is sleeved on the stop lever rotating shaft, one end of the torsional spring is fixedly connected to the stop lever, the other end of the torsional spring is fixedly connected to the lock lever, a buckling position is arranged on the shell, and a buckling claw is formed at the inner end of the stop lever;
in the unlocking position, the buckling claw is buckled with the buckling position so as to maintain the unlocking holding mechanism in the holding state;
in the holding state, the catch claw can be separated from the catch position by rotating the stop lever, so that the unlocking holding mechanism is changed from the holding state to the releasing state;
in the release state, the lock rod can be rotated from the unlocking position to the locking position by rotating the push button.
2. The lock of claim 1, wherein the housing is provided with a sliding slot, and the lock catch can slide back and forth between the locking position and the unlocking position along the sliding slot under the driving of the driving mechanism;
in the locking position, the lock catch abuts against the lock rod to lock the lock rod; in the unlocking position, the lock catch is separated from the lock rod to unlock the lock rod.
3. The lock of claim 2, wherein the lock catch comprises an oblique sliding part and a horizontal locking part, the driving mechanism is connected to the upper end of the oblique sliding part, and the horizontal locking part is connected to the lower end of the oblique sliding part;
in the locking position, the horizontal locking part abuts against the lock rod to lock the lock rod, and at the moment, the lock rod is kept horizontal;
when receiving the signal of unblanking under the shutting state, actuating mechanism drives slant portion of sliding slides to the lapse, makes the end of horizontal locking portion is to keeping away from the direction of fore shaft removes horizontal locking portion breaks away from behind the locking lever, the locking lever is turned around extremely under the action of gravity the position of unblanking.
4. The lock of claim 1, wherein the driving mechanism comprises a motor, a transmission wheel and a transmission rod, the motor is fixed in the housing, the transmission wheel is fixedly connected to an output shaft of the motor, an upper end of the transmission rod is hinged to an edge of the transmission wheel, and a lower end of the transmission rod is hinged to the lock catch.
5. The lock of claim 1, wherein the housing comprises a front shell and a bottom shell that are fastened to each other, an accommodating cavity is formed between the front shell and the bottom shell, the lock catch and the driving mechanism are accommodated in the accommodating cavity, and the driving mechanism is fixed on the front shell.
6. The lock of claim 5, wherein the housing is formed as a first arm and a second arm at two sides of the locking opening, the first arm is provided with a first notch at a lower end thereof, the second arm is provided with a second notch at a lower end thereof, and one end of the locking rod is positioned in the first notch and is rotatably connected to the face shell through a locking rod rotating shaft;
in the locking position, the other end of the lock rod is inserted into the second notch;
in the unlocked position, the other end of the locking bar falls vertically.
7. The lock of claim 5, wherein the housing further comprises an inner chamber disposed in the receiving cavity, and the inner chamber is disposed with the communication component, the main board, and the battery.
8. The lock of claim 1, wherein a sensor is disposed in the housing for detecting a position of the lock lever, and when the lock lever rotates to the locking position, the sensor sends a detection signal to the driving device, and the driving device drives the lock catch to move to the locking position based on the detection signal.
9. A shared bicycle, characterized in that it comprises a lock according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711108253.0A CN109763706B (en) | 2017-11-09 | 2017-11-09 | Lock and sharing bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711108253.0A CN109763706B (en) | 2017-11-09 | 2017-11-09 | Lock and sharing bicycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109763706A CN109763706A (en) | 2019-05-17 |
| CN109763706B true CN109763706B (en) | 2020-07-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711108253.0A Active CN109763706B (en) | 2017-11-09 | 2017-11-09 | Lock and sharing bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109763706B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4001069A1 (en) * | 2020-11-18 | 2022-05-25 | Darad Innovation Corporation | Electronic lock |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110528968A (en) * | 2019-09-26 | 2019-12-03 | 北京享易天下科技有限公司 | A kind of lockset and shared device for shared device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074013A (en) * | 1992-01-04 | 1993-07-07 | 唐秉盛 | Bicycle lock |
| JP2003013649A (en) * | 2001-07-03 | 2003-01-15 | Nikkoo:Kk | Ring lock for bicycle |
| CN102226365A (en) * | 2011-05-25 | 2011-10-26 | 无锡万紫科技有限公司 | Small-electric-quantity safety bicycle lock control device |
| CN106968531B (en) * | 2017-04-21 | 2021-07-27 | 北京摩拜科技有限公司 | A switching mechanism and tool to lock and vehicle for tool to lock |
-
2017
- 2017-11-09 CN CN201711108253.0A patent/CN109763706B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4001069A1 (en) * | 2020-11-18 | 2022-05-25 | Darad Innovation Corporation | Electronic lock |
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| Publication number | Publication date |
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| CN109763706A (en) | 2019-05-17 |
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