CN113120130B - Shared bicycle device capable of avoiding forgetting to take things to realize automatic reminding - Google Patents
Shared bicycle device capable of avoiding forgetting to take things to realize automatic reminding Download PDFInfo
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- CN113120130B CN113120130B CN202110532739.7A CN202110532739A CN113120130B CN 113120130 B CN113120130 B CN 113120130B CN 202110532739 A CN202110532739 A CN 202110532739A CN 113120130 B CN113120130 B CN 113120130B
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- fixedly connected
- bicycle
- spring
- groove
- movable
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- 239000012530 fluid Substances 0.000 claims description 16
- 230000005389 magnetism Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 238000013016 damping Methods 0.000 claims description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 229910052602 gypsum Inorganic materials 0.000 claims description 3
- 239000010440 gypsum Substances 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- 239000004006 olive oil Substances 0.000 claims description 3
- 235000008390 olive oil Nutrition 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229920001875 Ebonite Polymers 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 32
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J3/00—Acoustic signal devices; Arrangement of such devices on cycles
- B62J3/10—Electrical devices
- B62J3/12—Buzzers; Horns with electrically driven airflow
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J45/00—Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J9/00—Containers specially adapted for cycles, e.g. panniers or saddle bags
- B62J9/20—Containers specially adapted for cycles, e.g. panniers or saddle bags attached to the cycle as accessories
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Burglar Alarm Systems (AREA)
Abstract
The invention relates to the technical field of Internet of things, and discloses a sharing bicycle device capable of avoiding forgetting to take things and realizing automatic reminding. This avoid forgetting to take thing and realize automatic shared bicycle device who reminds, drive the operation of magnetic path through the electro-magnet, the cooperation of rethread sliding contact and commentaries on classics movable contact is used, the electro-magnet circular telegram after the bicycle unblanked, thereby reached and driven telescopic link downstream's effect, sliding contact moves the spout bottommost, after the bicycle closes the outage of lock electro-magnet, sliding contact and commentaries on classics movable contact point contact, thereby reached the effect that another some circuit of loudspeaker circular telegram, effectively realize automatic warning basket has article in, thereby avoid the loss of people's personal article and property.
Description
Technical Field
The invention relates to the technical field of Internet of things, in particular to a sharing bicycle device capable of avoiding forgetting to take things and achieving automatic reminding.
Background
The Internet of things is an important component of a new generation of information technology and also an important development stage of an 'informatization' era, a sharing bicycle drives residents to use public transportation means by providing services at campuses, subway stations, bus stations, public service areas and the like, but articles of the sharing bicycle are often left in a bicycle basket when the sharing bicycle is used, so that the articles are lost.
Sharing bicycle cooperates other public transport means, can not only shorten people's distance time, becomes the mode of going on a journey of an environmental protection moreover, and people can put self article in the basket when using sharing bicycle, but often can forget to take away the article in the basket after the lock car, leads to personal article to lose, causes the loss of self privacy and property.
Therefore, the sharing bicycle device capable of avoiding forgetting to take things and achieving automatic reminding is provided to solve the problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the sharing bicycle device for avoiding forgetting to take articles and realizing automatic reminding, which has the advantages of automatically reminding that articles are in a bicycle basket, effectively ensuring the privacy and property safety of people, and solving the problem that the articles in the bicycle basket are often forgotten after the bicycle is locked, so that the privacy and property loss of people are caused.
(II) technical scheme
In order to realize the purpose of automatically reminding that articles are in the bicycle basket and effectively ensuring the privacy and property safety of people, the invention provides the following technical scheme: the utility model provides an avoid forgetting to take thing and realize automatic shared bicycle device who reminds, includes the bicycle basket, the top swing joint of bicycle basket has flexible tray, and the inside of bicycle basket and the bottom that is close to flexible tray have seted up the activity groove, the bottom fixedly connected with of flexible tray and the inside swing joint's in activity groove moving part, the fluid groove has been seted up to the inside of moving part, the inside swing joint of moving part have with the inside swing joint in fluid groove telescopic link, the inside of bicycle basket and the bottom that is close to the activity groove have seted up the spout.
Preferably, the shape of activity groove is the rectangle, and the activity groove plays the effect that the moving part of being convenient for removed, and the shape of moving part is circular and the material of moving part is stereoplasm high strength material, and the moving part plays transmission and spacing effect, and the shape of spout is oval and the size of spout is less than the size of basket, and the spout plays the effect that the sliding contact of being convenient for removed.
Preferably, the inside of the fluid tank is filled with an electrorheological body, the main components of the electrorheological body are gypsum, lime, carbon powder and olive oil, the electrorheological body plays a role in fixing the telescopic rod, the telescopic rod is in a cross shape, the telescopic rod is made of hard rubber materials, damping holes are formed in two sides of the telescopic rod, and the damping holes play a role in blocking the telescopic rod to move.
Preferably, the top of the moving part is fixedly connected with a first spring fixedly connected with the top of the movable groove, the first spring is an extension spring, the diameter of the first spring is smaller than the width of the moving part, the first spring plays a role in contracting the moving part to the top, and the inside of the basket is fixedly connected with a positive plate close to the left side of the moving part.
Preferably, the inside of bicycle basket and the right side fixedly connected with negative plate that is close to the moving part, the negative plate size is the same with the positive plate size and negative plate and positive plate are symmetrical with the vertical center line of moving part, and the bigger the relative area of negative plate and positive plate is the more circuit voltage that flows through the negative plate, and negative plate and positive plate opposite face play the effect of connecting and breaking circuit.
Preferably, the inside of bicycle basket and the bottom fixedly connected with piezo-resistor that is close to the negative plate, piezo-resistor's the biggest access voltage is less than the maximum circuit voltage through the negative plate, piezo-resistor and the left side fixed connection's at bicycle basket top loudspeaker electric connection, piezo-resistor plays the effect of connecting and breaking circuit, the inside of moving part and the equal fixedly connected with dielectric plate in both sides that is close to the fluid tank, the bottom fixedly connected with magnetic path of telescopic link.
Preferably, the bottom fixedly connected with of telescopic link and the bottom fixed connection's of activity groove spring two, spring two is the width that the diameter at compression spring and spring two tops is less than the telescopic link, and spring two plays the effect of moving the telescopic link to the top, and the bottom of telescopic link is rotated and is connected with the connecting rod with the inside sliding connection of spout, and the bottom roll connection of connecting rod has the sliding contact with the inner wall roll connection of spout, and the right side of sliding contact is connected with the left side contact of rotating contact.
Preferably, the inside of basket and the inboard fixedly connected with electro-magnet that is close to the spout, the magnetism that produces at the electro-magnet top is opposite with the magnetism of magnetic path bottom and the size of electro-magnet is less than the size of spout, electro-magnet and bicycle electric connection, and the electro-magnet plays the driven effect of magnetism, and the right side of spout is rotated and is connected with the rotating contact, rotating contact and loudspeaker electric connection, and the rotating contact plays the effect of intercommunication circuit with the sliding contact.
(III) advantageous effects
Compared with the prior art, the invention provides the sharing bicycle device which avoids forgetting to take things and realizes automatic reminding, and has the following beneficial effects:
1. this avoid forgetting to take thing and realize automatic shared bicycle device who reminds, drive the operation of magnetic path through the electro-magnet, the cooperation of rethread sliding contact and commentaries on classics movable contact is used, the electro-magnet circular telegram after the bicycle unblanked, thereby reached and driven telescopic link downstream's effect, sliding contact moves the spout bottommost, after the bicycle closes the outage of lock electro-magnet, sliding contact and commentaries on classics movable contact point contact, thereby reached the effect that another some circuit of loudspeaker circular telegram, effectively realize automatic warning basket has article in, thereby avoid the loss of people's personal article and property.
2. This avoid forgetting to take thing to realize automatic shared bicycle device who reminds drives the moving part operation through flexible tray, and rethread negative plate uses with piezo-resistor's cooperation, when article are at the basket top to drive flexible tray downstream, effectively realize the relative area between positive plate and the negative plate and reduce, thereby realize the purpose of piezo-resistor route, thereby realize the effect of loudspeaker part circuit route.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is a schematic view of a pressing structure of the retractable tray of the present invention;
FIG. 4 is an enlarged view of a portion B of FIG. 3 according to the present invention.
In the figure: 1. a bicycle basket; 2. a telescopic tray; 3. a movable groove; 4. a movable member; 5. a first spring; 6. a positive plate; 7. a negative plate; 8. a voltage dependent resistor; 9. a fluid tank; 10. a dielectric plate; 11. a telescopic rod; 12. a magnetic block; 13. a second spring; 14. a chute; 15. a connecting rod; 16. a sliding contact; 17. an electromagnet; 18. the contacts are rotated.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Please refer to fig. 1-4, a shared bicycle device for avoiding forgetting to take things to realize automatic reminding comprises a bicycle basket 1, the top of the bicycle basket 1 is movably connected with a telescopic tray 2, a movable groove 3 is formed in the bicycle basket 1 and close to the bottom of the telescopic tray 2, the movable groove 3 is rectangular, the movable groove 3 plays a role in facilitating the movement of a movable part 4, the movable part 4 is circular and made of a hard high-strength material, the movable part 4 plays a role in transmission and limiting, the bottom of the telescopic tray 2 is fixedly connected with the movable part 4 which is movably connected with the inside of the movable groove 3, the top of the movable part 4 is fixedly connected with a spring I5 which is fixedly connected with the top of the movable groove 3, the spring I5 is an extension spring, the diameter of the spring I5 is smaller than the width of the movable part 4, and the spring I5 plays a role in contracting the movable part 4 to the top.
Inside of bicycle basket 1 and the left side fixedly connected with positive plate 6 that is close to moving part 4, inside of bicycle basket 1 and the right side fixedly connected with negative plate 7 that is close to moving part 4, the size of negative plate 7 is the same with the size of positive plate 6 and negative plate 7 and positive plate 6 are symmetrical with the perpendicular center line of moving part 4, the circuit voltage that negative plate 7 flows through negative plate 7 is bigger the more the relative area of negative plate 7 and positive plate 6 is, negative plate 7 and 6 opposite face of positive plate play the effect of connecting and breaking the circuit, the inside of bicycle basket 1 and the bottom fixedly connected with piezo-resistor 8 that is close to negative plate 7, piezo-resistor 8's maximum path voltage is less than the maximum circuit voltage through piezo-resistor 7, piezo-resistor 8 and the left side fixedly connected's at bicycle basket 1 top loudspeaker electric connection, piezo-resistor 8 plays the effect of connecting and breaking the circuit, fluid tank 9 has been seted up to moving part 4's inside, the inside packing of fluid tank 9 has the electric current variant, the main component of current variant is the gypsum, lime, current variant and olive oil, the current variant plays the effect of fixed telescopic link 11, the inside of moving part 4 and the equal fixedly connected with damping material that damping material 11 was seted up to telescopic link 11, and the inside flexible damping material 11 both sides of telescopic link was the telescopic rod 11 was the equal.
The bottom of telescopic link 11 is fixedly connected with magnet 12, the bottom of telescopic link 11 is fixedly connected with spring two 13 fixedly connected with the bottom of movable groove 3, spring two 13 is compression spring and the diameter at the top of spring two 13 is less than the width of telescopic link 11, spring two 13 plays the effect of moving telescopic link 11 to the top, inside of basket 1 and the bottom that is close to movable groove 3 have seted up spout 14, the shape of spout 14 is oval and the size of spout 14 is less than the size of basket 1, spout 14 plays the effect of being convenient for sliding contact 16 to remove, the bottom of telescopic link 11 is rotated and is connected with connecting rod 15 with the inside sliding connection of spout 14, the bottom of connecting rod 15 is rolled and is connected with sliding contact 16 with the inner wall rolling of spout 14, the right side of sliding contact 16 is connected with the left side contact of rotating contact 18, the inside of basket 1 and the inboard fixedly connected with electromagnet 17 that is close to spout 14, the magnetism that produces at the top of electromagnet 17 is opposite to the magnetism at the bottom of magnet 12 and the size of electromagnet 17 is less than the size of spout 14, electromagnet 17 is connected with the circuit electrical connection of the contact 18, electromagnet 17 plays the right side rotating transmission effect of rotating contact, the rotating contact 18 is connected with the contact of loudspeaker.
The working principle is as follows: when the bicycle is in operation, when no article is arranged at the top of the bicycle basket 1, the relative area between the positive plate 6 and the negative plate 7 is the largest, and the maximum access voltage of the piezoresistor 8 is smaller than the maximum circuit voltage passing through the negative plate 7, at the moment, the piezoresistor 8 is not electrified, when the article is arranged at the top of the bicycle basket 1, the telescopic tray 2 is driven to move downwards under the action of the gravity of the article, the movable part 4 drives the dielectric plate 10 to move downwards, the effect of reducing the relative area between the positive plate 6 and the negative plate 7 is effectively realized, at the moment, the maximum circuit voltage of the piezoresistor 8 is larger than the circuit voltage passing through the negative plate 7, the effect of the access of the piezoresistor 8 is realized, and the purpose of the circuit access of a horn part is effectively realized;
when the shared bicycle is unlocked, the electromagnet 17 electrically connected with the power supply of the trolley is electrified and magnetized, the magnetism generated at the top of the electromagnet 17 is opposite to the magnetism at the bottom of the magnetic block 12, the effect of adsorbing the magnetic block 12 is achieved by utilizing the principle that the opposite magnetism is attracted, the purpose of driving the telescopic rod 11 to move downwards is effectively achieved, the telescopic rod 11 is enabled to move to the bottommost part of the fluid groove 9, the effect that the sliding contact 16 moves to the bottommost part of the sliding groove 14 is achieved, after the shared bicycle is locked, the electromagnet 17 is powered off and magnetized, under the action of the spring II 13, the telescopic rod 11 is driven to move upwards, under the blocking effect of viscous liquid, the telescopic rod 11 gradually moves towards the top of the fluid groove 9, the time that the telescopic rod 11 moves to the top of the fluid groove 9 is four seconds, the sliding contact 16 slides on the right side of the sliding groove 14 at the moment, people leave articles in the trolley 1, the moving part of the moving part 4 moves upwards, the resistor 8 is powered off, the horn does not sound, when people take away the articles at the top of the trolley 1, the basket 16 is forgotten to be in contact with the trolley, the basket 18, the trolley, the effect of powering on the electricity of the trolley is achieved, and the effect of reminding people is achieved, thereby, the property is automatically, and the property is achieved, and the property is automatically.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides an avoid forgetting to take thing to realize automatic shared bicycle device who reminds, includes bicycle basket (1), its characterized in that: the top of the bicycle basket (1) is movably connected with a telescopic tray (2), a movable groove (3) is formed in the bicycle basket (1) and close to the bottom of the telescopic tray (2), a movable part (4) movably connected with the inner part of the movable groove (3) is fixedly connected to the bottom of the telescopic tray (2), a fluid groove (9) is formed in the movable part (4), a telescopic rod (11) is movably connected with the inner part of the fluid groove (9) in the inner part of the movable part (4), and a sliding groove (14) is formed in the bicycle basket (1) and close to the bottom of the movable groove (3);
the top of the movable piece (4) is fixedly connected with a first spring (5) fixedly connected with the top of the movable groove (3), the first spring (5) is an extension spring, the diameter of the first spring (5) is smaller than the width of the movable piece (4), and the left side, close to the movable piece (4), of the interior of the bicycle basket (1) is fixedly connected with a positive plate (6);
a negative plate (7) is fixedly connected to the right side, close to the moving part (4), inside the bicycle basket (1), the size of the negative plate (7) is the same as that of the positive plate (6), the negative plate (7) and the positive plate (6) are symmetrical with a vertical central line of the moving part (4), and the larger the relative area of the negative plate (7) and the positive plate (6), the larger the circuit voltage flowing through the negative plate (7);
the inner part of the bicycle basket (1) and the bottom close to the negative plate (7) are fixedly connected with a piezoresistor (8), the maximum path voltage of the piezoresistor (8) is smaller than the maximum circuit voltage of the negative plate (7), the piezoresistor (8) is electrically connected with a horn fixedly connected with the left side of the top of the bicycle basket (1), two sides of the inner part of the moving part (4) and the two sides close to the fluid groove (9) are fixedly connected with a dielectric plate (10), and the bottom of the telescopic rod (11) is fixedly connected with a magnetic block (12);
the bottom of the telescopic rod (11) is fixedly connected with a second spring (13) fixedly connected with the bottom of the movable groove (3), the second spring (13) is a compression spring, the diameter of the top of the second spring (13) is smaller than the width of the telescopic rod (11), the bottom of the telescopic rod (11) is rotatably connected with a connecting rod (15) in sliding connection with the inside of the sliding groove (14), the bottom of the connecting rod (15) is in rolling connection with a sliding contact (16) in rolling connection with the inner wall of the sliding groove (14), and the right side of the sliding contact (16) is in contact connection with the left side of the rotating contact (18);
the inside of basket (1) just is close to inboard fixedly connected with electro-magnet (17) of spout (14), and the magnetism that produces at electro-magnet (17) top is opposite with the magnetism of magnetic path (12) bottom and the size of electro-magnet (17) is less than the size of spout (14), electro-magnet (17) and bicycle electric connection, and the right side of spout (14) is rotated and is connected with rotating contact (18), rotating contact (18) and loudspeaker electric connection.
2. The sharing bicycle device for avoiding forgetting to take things to realize automatic reminding according to claim 1, characterized in that: the movable groove (3) is rectangular, the movable piece (4) is circular, the material of the movable piece (4) is hard high-strength material, the sliding groove (14) is oval, and the size of the sliding groove (14) is smaller than that of the bicycle basket (1).
3. The sharing bicycle device for avoiding forgetting to take things to realize automatic reminding according to claim 1, characterized in that: the fluid tank (9) is filled with an electrorheological fluid, the main components of the electrorheological fluid are gypsum, lime, carbon powder and olive oil, the telescopic rod (11) is in a cross shape, the telescopic rod (11) is made of hard rubber materials, and damping holes are formed in two sides of the telescopic rod (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110532739.7A CN113120130B (en) | 2021-05-17 | 2021-05-17 | Shared bicycle device capable of avoiding forgetting to take things to realize automatic reminding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110532739.7A CN113120130B (en) | 2021-05-17 | 2021-05-17 | Shared bicycle device capable of avoiding forgetting to take things to realize automatic reminding |
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| Publication Number | Publication Date |
|---|---|
| CN113120130A CN113120130A (en) | 2021-07-16 |
| CN113120130B true CN113120130B (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110532739.7A Expired - Fee Related CN113120130B (en) | 2021-05-17 | 2021-05-17 | Shared bicycle device capable of avoiding forgetting to take things to realize automatic reminding |
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| CN (1) | CN113120130B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112519931A (en) * | 2020-11-23 | 2021-03-19 | 陈宗智 | Novel bicycle basket for sharing bicycle |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5484090A (en) * | 1992-06-16 | 1996-01-16 | Lyshkov; Leslie | Framed pannier and mounting arrangement for rear carrier bicycle racks |
| CN206485453U (en) * | 2016-12-26 | 2017-09-12 | 天津同力车业有限公司 | A kind of special bicycle basket of the new electric car based on multiple safety protection device |
| CN109484533A (en) * | 2017-09-09 | 2019-03-19 | 三合顺（天津）电子科技有限公司 | A kind of intelligent bicycle |
| CN107902015A (en) * | 2017-11-13 | 2018-04-13 | 吴伟峰 | A kind of shared bicycle and its shared bicycle are prevented forgetting the method for taking thing |
| CN107902016A (en) * | 2017-12-13 | 2018-04-13 | 四川中庸药业有限公司 | A kind of bicycle use object storage mechanism |
| CN207790957U (en) * | 2018-01-16 | 2018-08-31 | 盐城工业职业技术学院 | A kind of anti-bicycle basket for forgetting to take article |
| CN108116559B (en) * | 2018-02-05 | 2023-06-20 | 安徽工业大学 | Bicycle and article omission preventing device and method thereof |
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2021
- 2021-05-17 CN CN202110532739.7A patent/CN113120130B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112519931A (en) * | 2020-11-23 | 2021-03-19 | 陈宗智 | Novel bicycle basket for sharing bicycle |
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