CN104554570A - Folding bicycle - Google Patents
Folding bicycle Download PDFInfo
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- CN104554570A CN104554570A CN201310479213.2A CN201310479213A CN104554570A CN 104554570 A CN104554570 A CN 104554570A CN 201310479213 A CN201310479213 A CN 201310479213A CN 104554570 A CN104554570 A CN 104554570A
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- folded bicycle
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Abstract
The invention provides a folding bicycle, which comprises a front main rod and a rear main rod; two different ends of the rear main rod comprise a first pivoting end and a second pivoting end; the first pivoting end is pivoted to one end of the front main rod; the second pivoting end is pivoted to a rear fork through a pivot piece; the rear fork is rotatably provided with a rear wheel; the pivot piece has an axis; the first pivoting end of the rear main rod defines a center along a height direction; the axis of the pivot piece and the center of the first pivoting end are connected by a first virtual line; the rear wheel has a rear wheel axis; the axis of the pivot piece and the rear wheel axis of the rear wheel are connected by a second virtual line; a first included angle is formed between the first virtual line and the second virtual line, when the folding bicycle is in an unfolded state, the first included angle is between 110-136 degrees; when the folding bicycle is in a closed state, the first included angle is between 77-96 degrees.
Description
Technical field
The present invention relates to a kind of folded bicycle, espespecially a kind of folded bicycle that can convert between deployed condition and folding state.
Background technology
Folding bicycle (folding bicycle) or Foldable electric bicycle (motorizedbicycle/electric bicycle) now, it has portable characteristic, more can, in conjunction with public transportation modes such as railway, highway, boats and ships, aircrafts, carry out travelling frequently, travelling and outdoor activity.Meanwhile, in recent years because global climate warms up transition, environmental consciousness is surging gradually, and earth environmental protection subject under discussion is extremely concerned, and free of contamination folding bicycle and the Electrical Bicycle compared with locomotive environmental protection more economically also have great business opportunity.
Folded bicycle has the function of Regular Bicycle, the metallic materials such as car body materials many uses high-carbon steel, aluminum alloy, chrome-molybdenum steel, and body construction uses the structure of single mobile jib mostly, the upper, lower tube structure of less employing standard bicycle frame.
Conveniently storage is folding and be easy to carry, and the fold mechanism that folded bicycle has should be arranged at the where of car body, the folding mode which kind of should use, folding times should be how many inferior factors, and these factors all need in many ways to design and consider.The more important thing is, folded bicycle not only to consider receive after volume, more necessary take into account whole body construction in launch use after intensity and drive safety, therefore comparatively standard bicycle is high for the difficulty of Design and manufacture.
Folded bicycle also has a feature, is exactly extensively to receive the vehicle wheel footpath of various sizes size.The wheel footpath of less than 16 inches can make the volume of storage become less, and the most small-wheel-diameter occurred at present is 6 inches, is secondly 8 inches and 12 inches and takes turns footpaths.The wheel footpath size of main flow is then 16 inches, 18 inches and 20 inches, and wherein the product style in 20 inches of wheel footpaths is very abundant especially, and the folded bicycle that You Duojia label company produces all belongs to this class.
Because the problem in above-mentioned traditional folded bicycle design cannot solve and overcome by actv., therefore the applicant proposes present patent application, to solve problem point.
Summary of the invention
The present invention tie up to for the technical matters solved and cannot provide less volume in: traditional folded bicycle after folding.
For this reason, a kind of folded bicycle provided by the present invention, it includes mobile jib after a front mobile jib and, one end of this front mobile jib has a head tube, this head tube is pivoted a front fork, one end of this front fork arranges a front-wheel rotationally, and the other end pivot joint one handles vertical tube of this front fork, this handle vertical tube arranges a handles away from one end of this front fork.The different two ends of this rear mobile jib comprise first pivot end and second pivot end, this this front mobile jib of the first pivot end pivot joint is away from one end of this head tube, this second pivot end is with pivot member pivot joint back vent, this pivot member has an axle center, this back vent arranges a trailing wheel rotationally away from one end of this pivot member, this rear mobile jib has a seat pipe between this first pivot end and this second pivot end, this seat pipe connects a seat bar movably, and this bar connects a seat cushion away from one end of this pipe.First pivot end of this rear mobile jib defines a center along a short transverse, first dummy line connects the axle center of this pivot member and the center of this first pivot end, this trailing wheel has a rear axis, second dummy line connects the axle center of this pivot member and the rear axis of this trailing wheel, forms first angle between this first dummy line and this second dummy line.
This back vent can change a wheelbase relative to this rear mobile jib pivot pendulum, this folded bicycle is converted between deployed condition and folding state, this wheelbase is the horizontal throw that a front-wheel axle center of this front-wheel and the rear axis of this trailing wheel extend, when this folded bicycle is positioned at deployed condition, this first angle is between 113 ~ 133 degree; When this folded bicycle is positioned at folding state, this first angle is between 80 ~ 93 degree.
In the first embodiment of the present invention, this folded bicycle is positioned at deployed condition, and this first angle is 132.3 degree; This folded bicycle is positioned at folding state, and this first angle is 92.3 degree.
In the second embodiment of the present invention, this folded bicycle is positioned at deployed condition, and this first angle is 116.8 degree; This folded bicycle is positioned at folding state, and this first angle is 80.8 degree.
In the third embodiment of the present invention, this folded bicycle is positioned at deployed condition, and this first angle is 116 degree; This folded bicycle is positioned at folding state, and this first angle is 85.3 degree.
In the fourth embodiment of the present invention, this folded bicycle is positioned at deployed condition, and this first angle is 113.7 degree; This folded bicycle is positioned at folding state, and this first angle is 92.8 degree.
This bar extends along the 3rd dummy line, when this folded bicycle is positioned at deployed condition, plumb bob vertical is perpendicular to the ground by the rear axis of this trailing wheel, and form second angle between this plumb bob vertical and the 3rd dummy line, this second angle is between 17 ~ 22 degree.
Major technique effect of the present invention is: when this folded bicycle is positioned at folding state, because this handle vertical tube is put along this first overbending direction pivot relative to this front fork, this back vent reduces this wheelbase relative to this rear mobile jib along this second overbending direction pivot pendulum, and this front mobile jib and this rear mobile jib are put along the mutual pivot of the 3rd overbending direction, make this handle between this front-wheel and this trailing wheel, and reduce the volume of this folded bicycle significantly.
Secondary technology effect of the present invention is: when this folded bicycle is in folding state, the front-wheel axle center of horizon by this front-wheel and a rear axis for this trailing wheel being parallel to ground, makes this folded bicycle still can with this front-wheel and this trailing wheel kiss the earth for implementation when folding state.
Other object, advantage and novel characteristics of the present invention will be more obvious from the following detailed description and related drawings.
Accompanying drawing explanation
Fig. 1 is the stereo appearance figure of folded bicycle first embodiment of the present invention, represents that this folded bicycle is positioned at deployed condition;
Fig. 2 is the action schematic diagram of folded bicycle first embodiment of the present invention, represents that the relative front fork of leader's vertical tube of this folded bicycle is put along one first overbending direction pivot, and after a back vent relative, mobile jib is put along one second overbending direction pivot;
Fig. 3 is the stereo appearance figure of folded bicycle first embodiment of the present invention, represents that this folded bicycle is positioned at folding state;
Fig. 4 is the lateral plan of folded bicycle first embodiment of the present invention, represents that this folded bicycle is positioned at folding state;
Fig. 5 is the stereo appearance figure of folded bicycle second embodiment of the present invention, represents that this folded bicycle is positioned at deployed condition;
Fig. 6 is the stereo appearance figure of folded bicycle second embodiment of the present invention, represents that this folded bicycle is positioned at folding state;
Fig. 7 is the stereo appearance figure of folded bicycle of the present invention 3rd embodiment, represents that this folded bicycle is positioned at deployed condition;
Fig. 8 is the stereo appearance figure of folded bicycle of the present invention 3rd embodiment, represents that this folded bicycle is positioned at folding state;
Fig. 9 is the stereo appearance figure of folded bicycle of the present invention 4th embodiment, represents that this folded bicycle is positioned at deployed condition;
Figure 10 is the stereo appearance figure of folded bicycle of the present invention 4th embodiment, represents that this folded bicycle is positioned at folding state.
Description of reference numerals 1 folded bicycle; Mobile jib before 10; 11 head tubes; 12 front forks; 13 front-wheels; 14 handle vertical tubes; 15 handles; Mobile jib after 20; 201 first pivot ends; 202 second pivot ends; 21 pivot member; 22 back vents; 23 trailing wheels; 24 pipes; 25 bars; 26 seat cushions; O axle center; C center; R rear axis; F front-wheel axle center; L1 first dummy line; L2 second dummy line; L3 the 3rd dummy line; Θ 1 first angle; Θ 2 second angle; D1 first overbending direction; D2 second overbending direction; D3 the 3rd overbending direction; W wheelbase; V plumb bob vertical; H horizon; 1a folded bicycle; Mobile jib after 20a; 201a first pivot end; 21a pivot member; 23a trailing wheel; 25a seat bar; 1b folded bicycle; Mobile jib after 20b; 201b first pivot end; 21b pivot member; 23b trailing wheel; 25b seat bar; 1c folded bicycle; Mobile jib after 20c; 201c first pivot end; 21c pivot member; 23c trailing wheel; 25c seat bar.
Detailed description of the invention
Relevant the technology used in the present invention, means and effect thereof, hereby lift four preferred embodiments and coordinate graphic detailed description as after, this is only for instructions, not by the restriction of this kind of structure in patent application.
Please refer to Fig. 1 to Fig. 4, it is stereo appearance figure and the action schematic diagram of folded bicycle 1 first embodiment of the present invention.First embodiment of folded bicycle 1 of the present invention is 12 inch folded bicycles, and it includes mobile jib 20 after a front mobile jib 10 and.
One end of this front mobile jib 10 has a head tube 11, this head tube 11 is pivoted a front fork 12, one end of this front fork 12 arranges a front-wheel 13 rotationally, and the other end pivot joint one handles vertical tube 14 of this front fork 12, this handle vertical tube 14 arranges a handles 15 away from one end of this front fork 12.
The different two ends of this rear mobile jib 20 comprise first pivot end 201 and second pivot end 202, this front mobile jib 10 of the first pivot end 201 pivot joint of this rear mobile jib 20 is away from one end of this head tube 11, second pivot end 202 of this rear mobile jib 20 is with a pivot member 21 pivot joint back vent 22, this pivot member 21 has an axle center O, this back vent 22 can be put relative to this rear mobile jib 20 pivot with this axle center O, this back vent 22 arranges a trailing wheel 23 rotationally away from one end of this pivot member 21, this rear mobile jib 20 has a seat pipe 24 between this first pivot end 201 and this second pivot end 202, this pipe 24 connects a seat bar 25 movably, this bar 25 connects a seat cushion 26 away from one end of this pipe 24.
First pivot end 201 of this rear mobile jib 20 defines a center C along a short transverse, a first dummy line L1 connects the axle center O of this pivot member 21 and center C of this first pivot end 201, this trailing wheel 23 has a rear axis R, a second dummy line L2 connects the axle center O of this pivot member 21 and rear axis R of this trailing wheel 23, forms a first angle Θ 1 between this first dummy line L1 and this second dummy line L2.In the present embodiment, the axle center O of this pivot member 21 is between this pipe 24 and this rear axis R.
This handle vertical tube 14 can relative to this front fork 12 along a first overbending direction D1 pivot pendulum, this back vent 22 can change a wheelbase W relative to this rear mobile jib 20 along a second overbending direction D2 pivot pendulum, this wheelbase W is the horizontal throw that a front-wheel axle center F of this front-wheel 13 and the rear axis R of this trailing wheel 23 extend, this front mobile jib 10 can be put along a 3rd overbending direction D3 pivot with this rear mobile jib 20, and this folded bicycle 1 is converted between deployed condition and folding state.This folded bicycle 1 is less than in the wheelbase W that folding state has the wheelbase W that deployed condition has.
When this folded bicycle 1 is positioned at deployed condition, this first angle Θ 1 is between 110 ~ 136 degree, in the present embodiment, when this folded bicycle 1 is positioned at deployed condition, this first angle Θ 1 is between 129.6 ~ 135.3 degree, and better angle is set to, and this first angle Θ 1 is 132.3 degree.
When this folded bicycle 1 is positioned at folding state, this first angle Θ 1 is between 77 ~ 96 degree, in the present embodiment, when this folded bicycle 1 is positioned at folding state, this first angle Θ 1 is between 89.3 ~ 95.3 degree, and better angle is set to, and this first angle Θ 1 is 92.3 degree.
This bar 25 extends along a 3rd dummy line L3, when this folded bicycle 1 is positioned at deployed condition, plumb bob vertical V is perpendicular to the ground by the rear axis R of this trailing wheel 23, form a second angle Θ 2 between this plumb bob vertical V and the 3rd dummy line L3, this second angle Θ 2 is between 17 ~ 22 degree.In the present embodiment, when this folded bicycle 1 is positioned at deployed condition, this second angle Θ 2 is 20 degree.
When this folded bicycle 1 is positioned at folding state, because this handle vertical tube 14 is put along this first overbending direction D1 pivot relative to this front fork 12, this back vent 22 reduces this wheelbase W relative to this rear mobile jib 20 along this second overbending direction D2 pivot pendulum, and this front mobile jib 10 is put along the mutual pivot of the 3rd overbending direction D3 with this rear mobile jib 20, and make this handle 15 between this front-wheel 13 and this trailing wheel 23, and reduce the volume of this folded bicycle 1 significantly.
Meanwhile, the front-wheel axle center F of horizon H by this front-wheel 13 and a rear axis R for this trailing wheel 23 being parallel to ground, make this folded bicycle 1 when folding state still can with this front-wheel 13 with this trailing wheel 23 kiss the earth for implementation.
Please refer to Fig. 5 and Fig. 6, it is the stereo appearance figure of folded bicycle 1a second embodiment of the present invention, represents that this folded bicycle 1a is positioned at deployed condition and folding state.Second embodiment of folded bicycle 1a of the present invention is 16 inch folded bicycles.Second embodiment of the invention is roughly the same with the structure of the first embodiment, difference is: the first pivot end 201a of this rear mobile jib 20a defines a center C along a short transverse, a first dummy line L1 connects the axle center O of this pivot member 21a and the center C of this first pivot end 201a, this trailing wheel 23a has a rear axis R, a second dummy line L2 connects the axle center O of this pivot member 21a and the rear axis R of this trailing wheel 23a, forms a first angle Θ 1 between this first dummy line L1 and this second dummy line L2.In the present embodiment, when this folded bicycle 1a is positioned at deployed condition, this first angle Θ 1 is between 113.8 ~ 119.8 degree, and better angle is set to, and this first angle Θ 1 is 116.8 degree.When this folded bicycle 1a is positioned at folding state, this first angle Θ 1 is between 77.8 ~ 83.8 degree, and better angle is set to, and this first angle Θ 1 is 80.8 degree.This bar 25a extends along a 3rd dummy line L3, when this folded bicycle 1a is positioned at deployed condition, plumb bob vertical V is perpendicular to the ground by the rear axis R of this trailing wheel 23a, a second angle Θ 2 is formed between this plumb bob vertical V and the 3rd dummy line L3, in the present embodiment, when this folded bicycle 1a is positioned at deployed condition, this second angle Θ 2 is 22 degree.
Please refer to Fig. 7 and Fig. 8, it is the stereo appearance figure of folded bicycle 1b the 3rd embodiment of the present invention, represents that this folded bicycle 1b is positioned at deployed condition and folding state.3rd embodiment of folded bicycle 1b of the present invention is 20 inch folded bicycles.Third embodiment of the invention is roughly the same with the structure of the first embodiment, difference is: the first pivot end 201b of this rear mobile jib 20b defines a center C along a short transverse, a first dummy line L1 connects the axle center O of this pivot member 21b and the center C of this first pivot end 201b, this trailing wheel 23b has a rear axis R, a second dummy line L2 connects the axle center O of this pivot member 21b and the rear axis R of this trailing wheel 23b, forms a first angle Θ 1 between this first dummy line L1 and this second dummy line L2.In the present embodiment, when this folded bicycle 1b is positioned at deployed condition, this first angle Θ 1 is between 113 ~ 119 degree, and better angle is set to, and this first angle Θ 1 is 116 degree.When this folded bicycle 1b is positioned at folding state, this first angle Θ 1 is between 82.3 ~ 88.3 degree, and better angle is set to, and this first angle Θ 1 is 85.3 degree.This bar 25b extends along a 3rd dummy line L3, when this folded bicycle 1b is positioned at deployed condition, plumb bob vertical V is perpendicular to the ground by the rear axis R of this trailing wheel 23b, a second angle Θ 2 is formed between this plumb bob vertical V and the 3rd dummy line L3, in the present embodiment, when this folded bicycle 1b is positioned at deployed condition, this second angle Θ 2 is 18 degree.
Please refer to Fig. 9 and Figure 10, it is the stereo appearance figure of folded bicycle 1c the 4th embodiment of the present invention, represents that this folded bicycle 1c is positioned at deployed condition and folding state.4th embodiment of folded bicycle 1c of the present invention is 22 inch folded bicycles.Fourth embodiment of the invention is roughly the same with the structure of the first embodiment, difference is: the first pivot end 201c of this rear mobile jib 20c defines a center C along a short transverse, a first dummy line L1 connects the axle center O of this pivot member 21c and the center C of this first pivot end 201c, this trailing wheel 23c has a rear axis R, a second dummy line L2 connects the axle center O of this pivot member 21c and the rear axis R of this trailing wheel 23c, forms a first angle Θ 1 between this first dummy line L1 and this second dummy line L2.In the present embodiment, when this folded bicycle 1c is positioned at deployed condition, this first angle Θ 1 is between 110.7 ~ 116.7 degree, and better angle is set to, and this first angle Θ 1 is 113.7 degree.When this folded bicycle 1c is positioned at folding state, this first angle Θ 1 is between 89.8 ~ 95.8 degree, and better angle is set to, and this first angle Θ 1 is 92.8 degree.This bar 25c extends along a 3rd dummy line L3, when this folded bicycle 1c is positioned at deployed condition, plumb bob vertical V is perpendicular to the ground by the rear axis R of this trailing wheel 23c, a second angle Θ 2 is formed between this plumb bob vertical V and the 3rd dummy line L3, in the present embodiment, when this folded bicycle 1c is positioned at deployed condition, this second angle Θ 2 is 17 degree.
In sum, folded bicycle 1 of the present invention, 1a, 1b, 1c have the following advantages:
1. rely on this first, second angle Θ 1, the angle design of Θ 2, make this folded bicycle 1, 1a, 1b, when 1c is positioned at folding state, this handle vertical tube 14 is put along this first overbending direction D1 pivot relative to this front fork 12, this back vent 22 with the axle center O of this pivot member 21 relative to this rear mobile jib 20, 20a, 20b, 20c reduces this wheelbase W along this second overbending direction D2 pivot pendulum, and this front mobile jib 10 and this rear mobile jib 20, 20a, 20b, 20c is along the mutual pivot pendulum of the 3rd overbending direction D3, and make this handle 15 be positioned at this front-wheel 13 and this trailing wheel 23, 23a, 23b, between 23c, and reduce this folded bicycle 1 significantly, 1a, 1b, the volume of 1c.
2. when this folded bicycle 1,1a, 1b, 1c are in folding state, horizon H being parallel to ground by the rear axis R of the front-wheel axle center F of this front-wheel 13 and this trailing wheel 23,23a, 23b, 23c, make this folded bicycle 1,1a, 1b, 1c when folding state still can with this front-wheel 13 with this trailing wheel 23,23a, 23b, 23c kiss the earth for implementation.
More than illustrate just illustrative for the purpose of the present invention; and nonrestrictive, those of ordinary skill in the art understand, when not departing from the spirit and scope that claim limits; many amendments, change or equivalence can be made, but all will fall within protection scope of the present invention.
Claims (9)
1. a folded bicycle, is characterized in that, includes:
A front mobile jib, its one end has a head tube, and this head tube is pivoted a front fork, and one end of this front fork arranges a front-wheel rotationally, the other end pivot joint one handles vertical tube of this front fork, and this handle vertical tube arranges a handles away from one end of this front fork;
Mobile jib after one, its different two ends comprise first pivot end and second pivot end, this this front mobile jib of the first pivot end pivot joint is away from one end of this head tube, this second pivot end is with pivot member pivot joint back vent, this pivot member has an axle center, this back vent arranges a trailing wheel rotationally away from one end of this pivot member, this rear mobile jib has a seat pipe between this first pivot end and this second pivot end, this seat pipe connects a seat bar movably, and this bar connects a seat cushion away from one end of this pipe;
First pivot end of this rear mobile jib defines a center along a short transverse, first dummy line connects the axle center of this pivot member and the center of this first pivot end, this trailing wheel has a rear axis, second dummy line connects the axle center of this pivot member and the rear axis of this trailing wheel, forms first angle between this first dummy line and this second dummy line;
This back vent can change a wheelbase relative to this rear mobile jib pivot pendulum, and this folded bicycle is converted between deployed condition and folding state, and this wheelbase is the horizontal throw that a front-wheel axle center of this front-wheel and the rear axis of this trailing wheel extend;
When this folded bicycle is positioned at deployed condition, this first angle is between 110 ~ 136 degree;
When this folded bicycle is positioned at folding state, this first angle is between 77 ~ 96 degree.
2. folded bicycle as claimed in claim 1, it is characterized in that: this folded bicycle is positioned at deployed condition, this first angle is between 129.6 ~ 135.3 degree.
3. folded bicycle as claimed in claim 1 or 2, it is characterized in that: this folded bicycle is positioned at folding state, this first angle is between 89.3 ~ 95.3 degree.
4. folded bicycle as claimed in claim 1, it is characterized in that: this folded bicycle is positioned at deployed condition, this first angle is between 113.8 ~ 119.8 degree.
5. the folded bicycle as described in claim 1 or 4, is characterized in that: this folded bicycle is positioned at folding state, and this first angle is between 77.8 ~ 83.8 degree.
6. folded bicycle as claimed in claim 1, it is characterized in that: this folded bicycle is positioned at deployed condition, this first angle is between 113 ~ 119 degree.
7. the folded bicycle as described in claim 1 or 6, is characterized in that: this folded bicycle is positioned at folding state, and this first angle is between 82.3 ~ 88.3 degree.
8. folded bicycle as claimed in claim 1, it is characterized in that: this folded bicycle is positioned at deployed condition, this first angle is between 110.7 ~ 116.7 degree.
9. the folded bicycle as described in claim 1 or 8, is characterized in that: this folded bicycle is positioned at folding state, and this first angle is between 89.8 ~ 95.8 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310479213.2A CN104554570B (en) | 2013-10-14 | 2013-10-14 | Folded bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310479213.2A CN104554570B (en) | 2013-10-14 | 2013-10-14 | Folded bicycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104554570A true CN104554570A (en) | 2015-04-29 |
| CN104554570B CN104554570B (en) | 2017-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310479213.2A Expired - Fee Related CN104554570B (en) | 2013-10-14 | 2013-10-14 | Folded bicycle |
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| Country | Link |
|---|---|
| CN (1) | CN104554570B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08332984A (en) * | 1995-06-09 | 1996-12-17 | Kanto Auto Works Ltd | Collapsible bicycle |
| CN201784764U (en) * | 2010-08-27 | 2011-04-06 | 大行科技(深圳)有限公司 | Bicycle folding positioning device |
| WO2013135560A1 (en) * | 2012-03-13 | 2013-09-19 | Markus Hartmann | Folding bicycle |
| CN203473134U (en) * | 2013-10-14 | 2014-03-12 | 王耀钦 | Folding bicycle |
-
2013
- 2013-10-14 CN CN201310479213.2A patent/CN104554570B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08332984A (en) * | 1995-06-09 | 1996-12-17 | Kanto Auto Works Ltd | Collapsible bicycle |
| CN201784764U (en) * | 2010-08-27 | 2011-04-06 | 大行科技(深圳)有限公司 | Bicycle folding positioning device |
| WO2013135560A1 (en) * | 2012-03-13 | 2013-09-19 | Markus Hartmann | Folding bicycle |
| CN203473134U (en) * | 2013-10-14 | 2014-03-12 | 王耀钦 | Folding bicycle |
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| Publication number | Publication date |
|---|---|
| CN104554570B (en) | 2017-07-14 |
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Granted publication date: 20170714 Termination date: 20181014 |