CN111899385A - Electronic lock shared by bicycle and helmet and method - Google Patents

Electronic lock shared by bicycle and helmet and method Download PDF

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Publication number
CN111899385A
CN111899385A CN202010811569.1A CN202010811569A CN111899385A CN 111899385 A CN111899385 A CN 111899385A CN 202010811569 A CN202010811569 A CN 202010811569A CN 111899385 A CN111899385 A CN 111899385A
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CN
China
Prior art keywords
electronic lock
helmet
joint
arc
rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202010811569.1A
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Chinese (zh)
Inventor
彭红萍
李太珍
麻银玲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaoxing Qiaolu Intelligent Technology Co ltd
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Shaoxing Qiaolu Intelligent Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shaoxing Qiaolu Intelligent Technology Co ltd filed Critical Shaoxing Qiaolu Intelligent Technology Co ltd
Priority to CN202010811569.1A priority Critical patent/CN111899385A/en
Publication of CN111899385A publication Critical patent/CN111899385A/en
Withdrawn legal-status Critical Current

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    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00Individual registration on entry or exit
    • G07C9/00174Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00896Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07FCOIN-FREED OR LIKE APPARATUS
    • G07F17/00Coin-freed apparatus for hiring articles; Coin-freed facilities or services
    • G07F17/0042Coin-freed apparatus for hiring articles; Coin-freed facilities or services for hiring of objects
    • G07F17/0057Coin-freed apparatus for hiring articles; Coin-freed facilities or services for hiring of objects for the hiring or rent of vehicles, e.g. cars, bicycles or wheelchairs
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18Status alarms
    • G08B21/24Reminder alarms, e.g. anti-loss alarms

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Lock And Its Accessories (AREA)

Abstract

The invention provides an electronic lock and a method shared by a sharing bicycle and a helmet. Comprises an electronic lock and a helmet shell. The helmet shell is characterized in that a joint is arranged at the bottom of the helmet shell, and through holes penetrating through the front surface and the back surface of the joint are formed in the joint. The electronic lock is arranged on the rear baffle, and the helmet shell is in linkage connection with the electronic lock through the connector. The electronic lock shared by the shared bicycle and the helmet and the method are characterized in that the helmet shell, the joint and the electronic lock are matched with each other. The bicycle helmet can be bound with the bicycle and the helmet on the premise of sharing one lock head, and meanwhile, if the helmet is not accurately placed, normal locking of the bicycle can be influenced, so that a user is forced to place the bicycle in a standard manner, safety of the helmet and the bicycle is guaranteed, and the possibility of losing the helmet is reduced.

Description

Electronic lock shared by bicycle and helmet and method
Technical Field
The invention relates to the technical field of shared bicycle equipment, in particular to an electronic lock and a method for sharing a bicycle and a helmet.
Background
In order to facilitate the living idea of people going out and reducing emission, more and more shared bicycles, shared electric vehicles and shared automobiles appear in streets and alleys, and great convenience is brought to the life of people. The shared electric vehicle has the advantages of high speed, physical strength saving, low cost and the like, so that the shared electric vehicle is suitable for more extensive groups.
At the present stage, the state has a new rule, namely, in order to guarantee the safety of citizens, the electric vehicle must wear a helmet when going out, the personal electric vehicle can also be provided with a helmet by itself, but a public helmet is required to be provided for the shared electric vehicle, but the shared electric vehicle is separated from the helmet, after the shared electric vehicle returns, some users cannot place the helmet according to requirements, and most importantly, the personnel do not have feedback on the return of the helmet, so the placement position of the helmet is random, and the helmet on the shared electric vehicle is lost to be a normal state.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an electronic lock and a method for sharing a bicycle and a helmet.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: an electronic lock shared by a bicycle and a helmet and a method thereof are arranged on a rear baffle of an electric bicycle. Comprises an electronic lock and a helmet shell. The helmet shell is characterized in that a joint is arranged at the bottom of the helmet shell, and through holes penetrating through the front surface and the back surface of the joint are formed in the joint. The electronic lock is arranged on the rear baffle, and the helmet shell is in linkage connection with the electronic lock through the connector. The electronic lock comprises an electronic lock body, a connecting plate, a supporting rod, a supporting seat, a movable rod, a steel wire, an arc-shaped locking strip, two L-shaped clamping plates and a linkage rod. The electronic lock main part sets up on the backplate, the arc locking strip is connected with the electronic lock main part linkage. The connecting plate is arranged on the side face of the rear baffle, and a groove is formed in the connecting plate. The supporting rod is arranged at the bottom of the connecting plate, and the supporting rod and the supporting seat are transversely arranged on the supporting rod.
One end of the movable rod penetrates through the supporting seat and extends to the bottom of the supporting seat. The two linkage rods are symmetrically hinged to one end of the movable rod, which is positioned at the top of the supporting seat. The middle parts of the two L-shaped splints are hinged with each other. The end of the support rod far away from the support rod is connected with the middle part of the L-shaped clamping plate, and the bottom of the L-shaped clamping plate is hinged with the linkage rod. The top of the L-shaped clamping plate corresponds to the through hole. The spring is sleeved on a part of the main body of the movable rod, which is positioned at the top of the supporting seat. One end of the steel wire is connected with the movable rod, and the other end of the steel wire is connected with the arc-shaped locking bar.
Preferably, the electronic lock further comprises a movable block, a support plate and a telescopic spring. The telescopic spring is arranged at the bottom of the connecting plate, and the movable block is arranged at the bottom of the telescopic spring. The supporting plate is arranged between the two L-shaped clamping plates. The supporting plate is connected with the movable block. And the supporting plate on the telescopic spring corresponds to the top end of the L-shaped clamping plate in the normal state.
Preferably, the electronic lock further comprises a concave chute, a sliding sleeve and a fixing rod. The concave sliding groove is formed in the arc-shaped locking strip, and the fixing rod is arranged on the concave sliding groove in a sliding mode. The fixed rod is connected with the sliding sleeve. One end of the steel wire, which is far away from the movable rod, is connected with the sliding sleeve.
Preferably, the joint and the connecting plate are made of steel which is not easy to deform.
Preferably, the width of the support plate is substantially greater than the thickness of the joint.
Preferably, the top end of the L-shaped clamping plate is provided with a convex block, and the convex block is matched with the through hole in the joint.
A method for using an electronic lock shared by a bicycle and a helmet comprises the following steps:
the method comprises the following steps: when personnel need take off helmet shell from the electronic lock at first, sweep the sign indicating number through the cell-phone and carry out the unblock.
Step two: then the arc-shaped locking strip retracts, at the moment, the fixed rod can move to the position, closest to the head of the arc-shaped locking strip, of the concave sliding groove and move along with the arc-shaped locking strip, and the original tight steel wire is changed into a loose state.
Step three: at the moment, under the action of the spring, the movable rod moves upwards, and the two linkage rods are unfolded towards two sides. So that the tops of the two L-shaped clamping plates are separated from each other, and the joint is loosened. The person can directly take up the helmet shell.
Step four: when a person needs to lock the electric vehicle, the connector on the helmet shell is firstly aligned with the slot on the connecting plate and inserted.
Step five: the joint then presses down on the support plate to force the support plate to move downwards, and when the support plate moves to the limit, the position of the helmet shell is kept still.
Step six: and then waiting for the electronic lock to be automatically locked, wherein the fixed rod changes the position along with the arc-shaped locking strip in the moving process of the arc-shaped locking strip. Forcing the wire to straighten and bring the tops of those two L-shaped cleats closer together. Pass through the joint and lock.
Step seven: when the helmet shell is not inserted into the connecting plate or the position of the connecting plate is not completely inserted into the helmet shell, the through hole in the joint does not correspond to the tops of the L-shaped clamping plates or the supporting plate is under the action of the telescopic springs, so that the two sides of the supporting plate support the tops of the two L-shaped clamping plates. The tops of the two L-shaped clamping plates can not be buckled.
Step eight: and further, the arc-shaped locking bar is forced not to move to the designated position, and the electronic lock cannot be normally locked. The electronic lock will thus issue a warning to remind the person to relock.
(III) advantageous effects
The invention provides an electronic lock shared by a bicycle and a helmet and a method. The method has the following beneficial effects:
1. the electronic lock shared by the shared bicycle and the helmet and the method are characterized in that the helmet shell, the joint and the electronic lock are matched with each other. The bicycle helmet can be bound with the bicycle and the helmet on the premise of sharing one lock head, and meanwhile, if the helmet is not accurately placed, normal locking of the bicycle can be influenced, so that a user is forced to place the bicycle in a standard manner, safety of the helmet and the bicycle is guaranteed, and the possibility of losing the helmet is reduced.
Drawings
FIG. 1 is a first perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is an enlarged view taken at A of FIG. 2 according to the present invention;
FIG. 4 is a perspective view of the electronic lock of the present invention;
FIG. 5 is a partial component schematic view of the present invention;
fig. 6 is a diagram of a helmet of the present invention.
In the figure: the helmet comprises an electric vehicle 1, a rear baffle 2, a sliding sleeve 3, an arc-shaped locking bar 4, an electronic lock body 5, an electronic lock 6, a helmet shell 7, a connector 8, a fixing rod 9, a concave sliding groove 10, a slot 11, a supporting plate 12, an L-shaped clamping plate 13, a linkage rod 14, a steel wire 15, a movable rod 16, a spring 17, a supporting seat 18, a supporting rod 19, a connecting plate 20, an expansion spring 21, a movable block 22 and a supporting rod 23.
Detailed Description
The embodiment of the invention provides an electronic lock shared by a bicycle and a helmet and a method, as shown in figures 1-6, and the electronic lock is arranged on a rear baffle 2 of an electric vehicle 1. Comprising an electronic lock 6 and a helmet shell 7. The bottom of helmet shell 7 is provided with joint 8, sets up the through-hole of the positive and negative two sides of through joint 8 on the joint 8. The electronic lock 6 is arranged on the backboard 2, and the helmet shell 7 is in linkage connection with the electronic lock 6 through the joint 8. The electronic lock 6 comprises an electronic lock body 5, a connecting plate 20, a support rod 23, a support rod 19, a support seat 18, a movable rod 16, a steel wire 15, an arc-shaped locking strip 4, two L-shaped clamping plates 13 and a linkage rod 14. The electronic lock main body 5 is arranged on the rear baffle 2, and the arc-shaped locking strip 4 is in linkage connection with the electronic lock main body 5. The connecting plate 20 is arranged on the side surface of the rear baffle plate 2, and the connecting plate 20 is provided with a slot 11. The supporting rod 23 is arranged at the bottom of the connecting plate 20, and the supporting rod 19 and the supporting seat 18 are both transversely arranged on the supporting rod 23.
One end of the movable rod 16 passes through the support seat 18 and extends to the bottom of the support seat 18. The two linkage rods 14 are symmetrically hinged on one end of the movable rod 16 at the top of the supporting seat 18. The middle parts of the two L-shaped clamping plates 13 are hinged with each other. One end of the support rod 19 far away from the support rod 23 is connected with the middle part of the L-shaped clamping plate 13, and the bottom of the L-shaped clamping plate 13 is hinged with the linkage rod 14. The top of the L-shaped clamping plate 13 corresponds to the through hole. The spring 17 is fitted over a portion of the body of the movable lever 16 on top of the support seat 18. One end of the steel wire 15 is connected with the movable rod 16, and the other end is connected with the arc-shaped locking strip 4.
The locking problem of the helmet 7 can be effectively solved through the matching of the two L-shaped clamping plates 13 and the joint 8, and whether the helmet 7 is correctly inserted or not can be judged by utilizing the position relation of the two L-shaped clamping plates 13. The practical performance of the invention is greatly improved.
The electronic lock main body 5 is consistent with a U-shaped electronic lock on a conventional shared bicycle on the market in structure, and the electronic lock only performs certain concave processing on the side surface of the lock strip, so that other parts can be conveniently matched. The internal structure of the electronic lock will not be described in detail.
The electronic lock 6 further includes a movable block 22, a support plate 12, and a telescopic spring 21. The extension spring 21 is disposed at the bottom of the connection plate 20, and the movable block 22 is disposed at the bottom of the extension spring 21. The support plate 12 is disposed between two L-shaped clamping plates 13. The support plate 12 is connected to the movable block 22. The support plate 12 of the extension spring 21 corresponds to the top end of the L-shaped clamp plate 13 in the normal state.
Through the matching of the movable block 22, the support plate 12 and the extension spring 21, when the helmet main body 7 is not inserted, the electronic lock cannot be normally locked, and then an alarm sound can be given out to remind a user to check and reset the position of the helmet main body 7.
The electronic lock 6 further comprises a concave sliding groove 10, a sliding sleeve 3 and a fixing rod 9. The concave sliding groove 10 is arranged on the arc-shaped locking strip 4, and the fixing rod 9 is arranged on the concave sliding groove 10 in a sliding mode. The fixed rod 9 is connected with the sliding sleeve 3. The end of the steel wire 15 far away from the movable rod 16 is connected with the sliding sleeve 3.
Through the matching of the concave sliding groove 10, the sliding sleeve 3 and the fixing rod 9 can be arranged on the part of the main body of the arc-shaped locking strip 4 outside, and then the distribution and the matching of the internal parts of the electronic lock are reduced to cause negative effects.
The joint 8 and the connecting plate 20 are both made of steel which is not easily deformed.
The width of the support plate 12 is much greater than the thickness of the joint 8. Thus, when the support plate 12 is sandwiched by the two L-shaped clamp plates 13, the tension of the wire 15 can be completely different from the tension when the tab 8 is sandwiched. The working stability of the invention is ensured.
The top end of the L-shaped clamping plate 13 is provided with a convex block which is matched with the through hole on the joint 8.
A method for using an electronic lock shared by a bicycle and a helmet comprises the following steps:
the method comprises the following steps: when a person needs to take the helmet shell 7 off the electronic lock 6, unlocking is carried out through code scanning of the mobile phone.
Step two: then the arc-shaped locking strip 4 retracts, at the moment, the fixing rod 9 moves to the position where the concave chute 10 is closest to the head of the arc-shaped locking strip 4 and moves along with the arc-shaped locking strip 4, and the original tight steel wire 15 is changed into a loose state.
Step three: at this point, the movable bar 16 moves upwards under the action of the spring 17, and the two linkage bars 14 are unfolded towards both sides. So that the tops of the two L-shaped clamping plates 13 are separated from each other and the joint 8 is released. The person can directly pick up the helmet shell 7.
Step four: when a person needs to lock the electric vehicle, the joint 8 on the helmet shell 7 is first aligned with the slot 11 on the connecting plate 20 and inserted.
Step five: the joint 8 then presses down on the support plate 12 forcing the support plate 12 to move downwards, keeping the helmet shell 7 stationary when the support plate 12 moves to its limit.
Step six: then, the electronic lock 6 is waited for to be automatically locked, and the fixing rod 9 changes the position along with the arc-shaped locking bar 4 in the process of moving the arc-shaped locking bar 4. Forcing the wire 15 to straighten and bring the tops of those two L-shaped jaws 13 closer together. Passes through the joint 8 and locks.
Step seven: when a person does not insert the helmet shell 7 into the connecting plate 20 or inserts the connecting plate 20 incompletely, the through hole on the joint 8 does not correspond to the top of the L-shaped clamping plate 13 or the supporting plate 12 is under the action of the extension spring 21, so that the two sides of the supporting plate 12 are pressed against the tops of the two L-shaped clamping plates 13. So that the tops of the two L-shaped clamping plates 13 cannot be buckled.
Step eight: thereby forcing the arc-shaped locking bar 4 not to move to the designated position and the electronic lock 6 not to be locked normally. The electronic lock 6 will thus issue a warning to remind the person to relock.
In summary, the electronic lock shared by the bicycle and the helmet and the method are achieved through the mutual cooperation of the helmet shell 7, the joint 8 and the electronic lock 6. The bicycle helmet can be bound with the bicycle and the helmet on the premise of sharing one lock head, and meanwhile, if the helmet is not accurately placed, normal locking of the bicycle can be influenced, so that a user is forced to place the bicycle in a standard manner, safety of the helmet and the bicycle is guaranteed, and the possibility of losing the helmet is reduced.

Claims (7)

1. The utility model provides a sharing bicycle and shared electronic lock of helmet, sets up on backplate (2) of electric motor car (1), its characterized in that: comprises an electronic lock (6) and a helmet shell (7), the bottom of the helmet shell (7) is provided with a joint (8), the joint (8) is provided with a through hole penetrating through the front and back surfaces of the joint (8), the electronic lock (6) is arranged on a rear baffle (2), the helmet shell (7) is linked with the electronic lock (6) through the joint (8), the electronic lock (6) comprises an electronic lock main body (5), a connecting plate (20), a support rod (23), a support rod (19), a spring (17), a support seat (18), a movable rod (16), a steel wire (15), an arc-shaped locking strip (4), two L-shaped clamping plates (13) and a linkage rod (14), the electronic lock main body (5) is arranged on the rear baffle (2), the arc-shaped locking strip (4) is linked with the electronic lock main body (5), the connecting plate (20) is arranged on the side surface of the rear baffle (2), the connecting plate (20) is provided with a slot (11), and the support rod (23) is arranged at the bottom of the connecting plate (20);
bracing piece (19) and supporting seat (18) all transversely set up on branch (23), the one end of movable rod (16) is passed supporting seat (18) and is extended to the bottom of supporting seat (18), and two gangbar (14) symmetry articulate and serve in one that movable rod (16) are located supporting seat (18) top, and the middle part of two L type splint (13) is articulated each other, the one end that branch (23) were kept away from in bracing piece (19) links to each other with L type splint (13) middle part, the bottom and the gangbar (14) of L type splint (13) are articulated, the top and the through-hole of L type splint (13) are corresponding, spring (17) cover is located the partial main part at supporting seat (18) top in movable rod (16), the one end and the movable rod (16) of steel wire (15) link to each other, and the other end links to each other with arc locking strip (4).
2. The electronic lock of claim 1, wherein the electronic lock comprises: electronic lock (6) still include movable block (22), backup pad (12) and expanding spring (21), expanding spring (21) set up the bottom at connecting plate (20), movable block (22) set up the bottom at expanding spring (21), backup pad (12) set up between two L type splint (13), backup pad (12) link to each other with movable block (22), backup pad (12) on expanding spring (21) under the normal condition are corresponding with the top of L type splint (13).
3. The electronic lock of claim 1, wherein the electronic lock comprises: the electronic lock (6) further comprises a concave sliding groove (10), a sliding sleeve (3) and a fixing rod (9), wherein the concave sliding groove (10) is formed in the arc-shaped locking strip (4), the fixing rod (9) is arranged on the concave sliding groove (10) in a sliding mode, the fixing rod (9) is connected with the sliding sleeve (3), and one end, away from the movable rod (16), of the steel wire (15) is connected with the sliding sleeve (3).
4. The electronic lock of claim 1, wherein the electronic lock comprises: the joint (8) and the connecting plate (20) are both made of steel which is not easy to deform.
5. The electronic lock of claim 1, wherein the electronic lock comprises: the width of the support plate (12) is much greater than the thickness of the joint (8).
6. The electronic lock of claim 1, wherein the electronic lock comprises: the top of L type splint (13) is equipped with the lug, the lug is with the through-hole looks adaptation on connecting (8).
7. The use method of the electronic lock shared by the bicycle and the helmet as claimed in any one of claims 1 to 6, wherein: it comprises the following steps:
the method comprises the following steps: firstly, when a person needs to take the helmet shell (7) off the electronic lock (6), unlocking is carried out through mobile phone code scanning;
step two: then the arc-shaped locking bar (4) retracts, at the moment, the fixing rod (9) can move to the position, closest to the head of the arc-shaped locking bar (4), of the concave sliding chute (10) and move along with the arc-shaped locking bar (4), and the original tight steel wire (15) is changed into a loose state;
step three: at the moment, under the action of a spring (17), a movable rod (16) moves upwards, and two linkage rods (14) are unfolded towards two sides, so that the tops of two L-shaped clamping plates (13) are separated from each other, the joint (8) is loosened, and a person can directly take up the helmet shell (7);
step four: when a person needs to lock the electric vehicle, firstly, a joint (8) on the helmet shell (7) is aligned with a slot (11) on the connecting plate (20) and inserted;
step five: then the joint (8) presses down the support plate (12) to force the support plate (12) to move downwards, and when the support plate (12) moves to the limit, the position of the helmet shell (7) is kept still;
step six: then waiting for the electronic lock (6) to be automatically locked, wherein the fixed rod (9) changes position along with the arc-shaped locking bar (4) in the moving process of the arc-shaped locking bar (4), so that the steel wire (15) is forced to be straightened, the tops of the two L-shaped clamping plates (13) are close to each other, and the two L-shaped clamping plates are locked through the joint (8);
step seven: when a person does not insert the helmet shell (7) into the connecting plate (20) or inserts the connecting plate (20) incompletely, the through hole on the joint (8) does not correspond to the top of the L-shaped clamping plate (13) or the supporting plate (12) is under the action of the telescopic spring (21), so that the two sides of the supporting plate (12) are propped against the tops of the two L-shaped clamping plates (13), and the tops of the two L-shaped clamping plates (13) cannot be buckled;
step eight: further, the arc-shaped lock bar (4) is forced not to move to the designated position, and the electronic lock (6) cannot be normally locked, so that the electronic lock (6) can give an alarm to remind personnel of locking again.
CN202010811569.1A 2020-08-13 2020-08-13 Electronic lock shared by bicycle and helmet and method Withdrawn CN111899385A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010811569.1A CN111899385A (en) 2020-08-13 2020-08-13 Electronic lock shared by bicycle and helmet and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010811569.1A CN111899385A (en) 2020-08-13 2020-08-13 Electronic lock shared by bicycle and helmet and method

Publications (1)

Publication Number Publication Date
CN111899385A true CN111899385A (en) 2020-11-06

Family

ID=73230272

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010811569.1A Withdrawn CN111899385A (en) 2020-08-13 2020-08-13 Electronic lock shared by bicycle and helmet and method

Country Status (1)

Country Link
CN (1) CN111899385A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113404392A (en) * 2021-05-27 2021-09-17 浙大城市学院 Coded helmet lock and installation method
CN113543106A (en) * 2021-07-24 2021-10-22 湖南喜宝达信息科技有限公司 Electric bicycle and control method and storage medium of intelligent helmet of electric bicycle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113404392A (en) * 2021-05-27 2021-09-17 浙大城市学院 Coded helmet lock and installation method
CN113543106A (en) * 2021-07-24 2021-10-22 湖南喜宝达信息科技有限公司 Electric bicycle and control method and storage medium of intelligent helmet of electric bicycle

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Application publication date: 20201106