CN103661724A - Suitcase type folding bicycle - Google Patents
Suitcase type folding bicycle Download PDFInfo
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- CN103661724A CN103661724A CN201210349875.3A CN201210349875A CN103661724A CN 103661724 A CN103661724 A CN 103661724A CN 201210349875 A CN201210349875 A CN 201210349875A CN 103661724 A CN103661724 A CN 103661724A
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- 238000004904 shortening Methods 0.000 description 1
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Abstract
A suitcase type folding bicycle mainly consists of a front wheel carrier, a frame, a folding handlebar, a saddle, pedals, a rear wheel carrier, wheels and accessories and is characterized in that two longitudinal parallelly-arranged plates are connected with a middle saddle vertical tube through cross rods to form the frame, the front end and the rear end are respectively hinged to a front beam and a rear supporting rod, the front beam is hinged to the front wheel carrier, or a chute is arranged on a frame plate, and a front wheel carrier sliding block is arranged in the chute. The rear supporting rod and the front end of the rear wheel carrier are hinged and form a shape of a Chinese character 'zhi' after being folded, a saddle tube is inserted into the saddle vertical tube, the pedals are hinged under the frame, the folding handlebar is hinged to the position of a steering tube of the front wheel carrier, and all of parts are connected through connecting rods and form the bicycle or a shape of a box through rotation and sliding folding. The suitcase type folding bicycle has the advantages of being quick in folding and small in size, meets the requirements of carrying, transfer and other short-distance riding of people taking subways, buses, steamships, trains, airplanes and the like and has wide market prospect.
Description
Technical field
The present invention relates to a kind of light and handy, convenient, Portable box-type folding bike of being applicable to carrying.
Background technology
The life that the progress and development of science and technology is people is providing the many kinds of vehicle respectively to have feature, such as subway, the public transport meanss such as city motor bus, when peak traffic, bringing into play capacity large, the effect that efficiency is high, but waste seems when passenger flow volume is few, and need wait, especially transfer distance far wastes time and energy, although small passenger car ride comfort, meet people from departure place directly to the demand of destination, but along with increasing considerably of many city automobile recoverable amounts, cause serious congestion in road situation, especially in having the metropolis of millions of automobiles, travel and park and seem more difficult, therefore people more and more need a kind ofly to take various public transport meanss and carry, the vehicle of riding between transfer or other short range, so in the box-shaped two-wheeled folded bicycle (patent No.: 20072031109.6), Foldable becomes the car (patent No.: 200810127016.3) of box-shaped, the portable case type two-wheeled folded bicycle (patent No.: 200820207336.5), the portable case type two-wheeled folded bicycle (patent No.: 200920174175.9), 2009200047731) and the Portable box-type folding bike (patent No.: upper its structure of further simplifying in basis such as 201110045455) the portable case type two-wheeled folded bicycle (patent No.:, form the more Portable box-type folding bike of foldable.
Summary of the invention
The object of the invention be to provide while being launched into car, ride not only comfortable, and stable, reliably, the profile standard after folding, volume is little, and it is achieved in that it is mainly by wheel, rear wheel frame, vehicle frame, vehicle seat, foot-operated, Foldable handlebar, front wheel carrier and annex form, and front wheel carrier is to have axis hole by horizontal beam one end, and the other end turns to standpipe to be connected with front fork, and front fork packs into turn in standpipe and forms, and the vehicle frame that the plate of two parallel longitudinal placements and middle vehicle seat standpipe connect into cross bar, before it, rear end respectively with front-axle beam, back support rod is hinged, front-axle beam and front wheel carrier are hinged, or there is chute on vehicle frame plate, front wheel carrier end slide block is placed in chute, back support rod and rear wheel frame are hinged, after folding, mutual shape is as zigzag, vehicle seat saddle pipe inserts in vehicle seat standpipe, hinged and the locking of Foldable handlebar lower end and front wheel carrier steering tube, foot-operated being positioned under vehicle frame, then connect with connecting rod, slide and rotate these parts, expansion becomes the car of riding for people, and shrinking closes becomes boxed-section shape and can carry, and also can utilize the wheel that exposes casing to push away, draw walking.
Front rod one end is hinged on front wheel carrier, the other end is hinged on vehicle frame front end, middle connecting rod one end is hinged on back support rod, the other end is hinged on front-axle beam front end, and rear linking rod one end is hinged on vehicle frame rear end, and the other end is hinged on rear wheel frame, the angle that the angle of wherein rotating between front wheel carrier and front-axle beam and vehicle frame and front-axle beam rotate is identical, form parallel rod, and have retaining groove on front wheel carrier axle head, stop inordinate rotation between front wheel carrier and front-axle beam.
On the vehicle seat standpipe of vehicle frame, have groove, insert lateral pin on the vehicle seat saddle pipe in standpipe and be arranged in groove, lock handle is V-arrangement shape, be hinged on vehicle frame and with torque spring and hold, on the arm of one end, have as L shaped shape arc and radial groove, on trailing wheel boom, there is pivot pin to be arranged in chute, when vehicle seat moves up and down, vehicle seat saddle pipe lateral pin moves thereupon, promotion lock handle rotates, drive back support rod rotates, with among connecting rod rotate, middle connecting rod drives front-axle beam to rotate, front-axle beam drives front wheel carrier to rotate, rear linking rod drives rear wheel frame to rotate, reach the object of launching and shrinking, when reaching expanded position, at spring, pull lock handle to rotate, deep-slotted chip breaker on it snaps in the pivot pin on trailing wheel boom, the other end gets lodged in the slip that stops lateral pin on vehicle seat saddle pipe in central frame beam vehicle seat standpipe slots, play locking action, otherwise pull lock handle with regard to collapsible car load.
For front wheel carrier slip front end locking, vehicle frame plate chute lower end has in a bit of vertical channel and has lateral pin, on front wheel carrier, also have Baltimore groove, front wheel carrier slide into lower end lateral pin be stuck in front wheel carrier upper groove, stop front wheel carrier to slide.
Can have jam nut in the vehicle seat standpipe upper end of vehicle frame, on vehicle seat saddle pipe, have screw thread, also there is screw thread the vehicle seat standpipe upper end of vehicle frame, when vehicle seat saddle pipe is raised to position, turns the vehicle seat standpipe that nut blocks vehicle seat saddle pipe and vehicle frame.
Rear linking rod and vehicle frame is hinged, on back support rod, the hinged axillare of rear wheel frame, have and rotate the required angle deep-slotted chip breaker of rear wheel frame, deep-slotted chip breaker is connected to radial slot, back support rod has corresponding radial slot, in groove, be installed with lateral pin and hold with spring, when lateral pin slides into coincidence radial slot from deep-slotted chip breaker, then rotate another end slot of rear linking rod and be stuck on lateral pin, stop the rotation between back support rod, rear wheel frame and vehicle frame.
Foldable handlebar is comprised of handgrip, upper support bar, lower support bar three parts, two handgrips of Foldable handlebar are hinged on Foldable handlebar upper support bar axle bed, upper support bar lower end and lower support bar are hinged, the lower support bar other end is hinged on and is fixed on front wheel carrier and turns on standpipe, with connecting rod, respectively handgrip, upper support bar, lower support bar are linked together, form interlock mode.
Ride and be hinged on its foot-driven lever two ends axle bed by the longitudinal hinge of stretcher, when stretcher is holded up, being positioned at foot-driven lever side forms, two foot-operated foot-driven lever front ends are hinged on vehicle frame, pedal connecting rod one end is hinged on the foot-driven lever of stepping on, the other end is hinged on front rod, also can be hinged on back support rod, form interlock mode, also can and pack up with connecting rod and foot-driven lever and rotate interlock two foot-operated expansion.
Adopt foot-operated startup and the brake of controlling car, can be at vehicle frame, on back support rod or rear wheel frame, have battery case hanging hole, battery is arranged in its space cell box, adopt existing hub-type motor, be that electrical motor is arranged in hub positions, also can axis be installed at frame pedal Board position, sprocket wheel is installed on axis, on its axle, there is hold-down arm, folding pedals is housed to be formed foot-operated, intermediate chain wheel is contained on vehicle frame and rear wheel frame jointed shaft, the manpower mode that sprocket wheel is connected with chain by intermediate chain wheel with rear flying wheel, sprocket wheel is connected driving by intermediate chain wheel with chain with the flywheel of trailing wheel, just become folding bicycle.
During use, mention vehicle seat, be subject to connecting rod and Action of Gravity Field to stretch out respectively front and rear wheel, expansion puts in place and locks, open Foldable handlebar, after forming car, for people, ride, handle control line by Foldable handlebar is controlled power part and brake disc moves ahead car or stops, and shrinks equally vehicle seat saddle pipe and Foldable handlebar and car is folded into boxed-section shape and can carries, and also can utilize the handle and the wheel that expose casing to push away, draw walking.
Accompanying drawing explanation
Accompanying drawing 1 is front view of the present invention.
Accompanying drawing 2 is birds-eye view of the present invention.
Accompanying drawing 3, for the present invention is folded into case front view.
Accompanying drawing 4, for the present invention is folded into case birds-eye view.
Accompanying drawing 5 is the present invention's front view that entirely links.
Accompanying drawing 6.For the full interlock of the present invention is folded into case front view
Accompanying drawing 7 is sliding type front view of the present invention.
Accompanying drawing 8 is sliding type birds-eye view of the present invention.
Accompanying drawing 9, for sliding type folding of the present invention is case front view.
Accompanying drawing 10, for sliding type folding of the present invention is case birds-eye view.
Accompanying drawing 11 is sliding type back stay front view of the present invention.
Accompanying drawing 12, for sliding type back stay of the present invention is folded into case front view
The specific embodiment
Below in conjunction with accompanying drawing and example, the present invention is further described.
Fig. 1, in 2, 1. wheel, 2. rear wheel frame, 3. back support rod, 4. vehicle seat, 5. vehicle frame, 6. Foldable handlebar, 7. front wheel carrier, 8. front-axle beam, 9. front rod, 10. foot-operated, connecting rod in 11., 13. lock handles, 14. rear linking rods and annex form, front wheel carrier (7) is to have axis hole by horizontal beam one end, the other end turns to standpipe to be connected with front fork, front fork packs into turn in standpipe and forms, vehicle frame (5) is formed by connecting by transverse pipe by two parallel longitudinal plates and middle vehicle seat standpipe, on plate, have lightening hole, vehicle frame (5) front end and front-axle beam (8) are hinged, front-axle beam (8) rear end and front wheel carrier (7) are hinged, vehicle frame (5) rear end and back support rod (3) are hinged, back support rod (3) rear end and rear wheel frame (2) are hinged, folding rear shape is as zigzag each other, vehicle seat (4) saddle pipe inserts in vehicle frame (5) vehicle seat standpipe, and ride (10), be that stretcher one end is hinged under vehicle frame (5) on axle bed.
Front rod (9) one end is hinged on front wheel carrier (7), the other end is hinged on vehicle frame (5) front end, middle connecting rod (11) one end is hinged on back support rod (3), the other end is hinged on front-axle beam (8) front end, rear linking rod (14) one end is hinged on vehicle frame (5) rear end, the other end is hinged on rear wheel frame (2), the angle of wherein rotating between front wheel carrier (7) and front-axle beam (8) is identical with the angle of front-axle beam (8) rotation with vehicle frame (5), form parallel rod, and on front wheel carrier (7) axle head, have retaining groove, stop inordinate rotation between front wheel carrier (7) and front-axle beam (8).
On the vehicle seat standpipe of vehicle frame (5), have groove, on vehicle seat (4) saddle pipe in insertion standpipe, lateral pin is in groove, lock handle (12) is V-arrangement shape, be hinged on vehicle frame (5) and hold with spring, on the arm of one end, have as L shaped arc and radial groove, on rear wheel frame (2) arm, there is pivot pin to be arranged in chute, when vehicle seat (4) moves up and down, vehicle seat (4) saddle pipe lateral pin moves thereupon, promoting lock handle (12) rotates, drive back support rod (3) to rotate, with among connecting rod (11) rotate, middle connecting rod (11) drives front-axle beam (8) to rotate, front-axle beam (8) drives front wheel carrier (7) to rotate, rear linking rod (14) drives rear wheel frame (2) to rotate, reach the object of launching and shrinking, when reaching expanded position, lock handle (12) is under torque spring effect, deep-slotted chip breaker on it snaps in the pivot pin on rear wheel frame (2) arm, the other end gets lodged in the slip that stops lateral pin on vehicle seat (4) saddle pipe in the middle vehicle seat standpipe slots of vehicle frame (5), play locking action, reversion lock handle (12) is with regard to collapsible car load.
Foldable handlebar (6) is comprised of handgrip, upper support bar, lower support bar three parts, two handgrips of Foldable handlebar are hinged on Foldable handlebar upper support bar axle bed, upper support bar lower end and lower support bar are hinged, the lower support bar other end is hinged on and is fixed on front wheel carrier and turns on standpipe, with connecting rod, respectively handgrip, upper support bar, lower support bar are linked together, form interlock mode.
Can on rear linking rod (14) arm, hang with battery case, Fig. 1,2 is car, and Fig. 3,4 shrinks folding as suitcase.
In Fig. 5, 12. pedal connecting rods, wherein connecting rod (11) one end is hinged on back support rod (3), the other end is hinged on front rod (9), connecting rod (11) length in shortening like this, can there is jam nut in the vehicle seat standpipe upper end of vehicle frame (5), on it, there are two sections of screw threads, screw thread on difference interlock vehicle seat (4) saddle pipe, the vehicle seat standpipe upper end screw thread of vehicle frame (5), when vehicle seat (4) saddle pipe is raised to position, turn the vehicle seat standpipe that nut blocks vehicle seat (4) saddle pipe and vehicle frame (5), for reducing pedal position, foot-operated (10) are that stretcher is hinged on the axle bed of foot-driven lever one end, when stretcher is holded up, being positioned at foot-driven lever side forms, the foot-driven lever front end of two foot-operated (10) is hinged on vehicle frame (5) front end transverse tube both sides, pedal connecting rod (12) one end is hinged on the foot-driven lever of stepping on (10), the other end is hinged on front rod (9), form interlock mode, Fig. 5 is car shape, can guide wheel be housed at vehicle frame (5) front end, being folded into Fig. 6 conveniently pushes away as case, draw.
Fig. 7, in 8, vehicle frame (5) is to be formed by connecting by transverse pipe by the plate of two parallel longitudinals and middle vehicle seat standpipe, its rear end and back support rod (3) are hinged, on vehicle frame (5) plate, there is chute, front wheel carrier (7) slide block is placed in groove, rear wheel frame (2) is hinged with back support rod (3), after folding, mutual shape is as zigzag, Foldable handlebar (6) lower end and front wheel carrier (7) steering tube hinged and locking, foot-operated (10) are positioned under vehicle frame (5), vehicle frame (5) plate upper hopper chute lower end has in a bit of vertical channel and has lateral pin, front wheel carrier also has Baltimore groove on (7), front wheel carrier (7) slide into lower end lateral pin be stuck in front wheel carrier (7) upper groove, stop front wheel carrier (7) to slide, slide and rotate these parts and launch to become the car of riding for people, contraction is closed and is become boxed-section shape, Fig. 7, 8 is car, Fig. 9, 10 is folding rear as case for shrinking.
In Figure 11, rear linking rod (14) is hinged on vehicle frame (5), on back support rod (3), the hinged axillare of rear wheel frame (2), have and rotate the required angle deep-slotted chip breaker of rear wheel frame (2), deep-slotted chip breaker is connected to radial slot, back support rod (3) has corresponding radial slot, in groove, there is lateral pin and hold with spring, when lateral pin slides into coincidence radial slot from deep-slotted chip breaker, rotating rear linking rod (14) other end is stuck on lateral pin again, stop the rotation between back support rod (3), rear wheel frame (2) and vehicle frame (5), Figure 11 is car, and Figure 12 is folding rear as case for shrinking.
During use, mentioning vehicle seat (4) is subject to connecting rod and Action of Gravity Field to stretch out respectively front and rear wheel, expansion puts in place and locks, open Foldable handlebar (6), after forming car, for people, ride, handgrip control line control power part and brake disc by Foldable handlebar (6) move ahead car or stop, otherwise be folded into boxed-section shape, can carry, also can utilize the handle and the wheel that expose casing to push away, draw walking.
The invention provides a kind of suitable walking-replacing tool, simple in structure, lightweight, easy to operate, be applicable to people in city life and take and all kinds ofly carry during as public transport meanss such as subway, bus, train, steamer, aircrafts, change to or other short range.
Claims (8)
1. mainly by wheel (1), rear wheel frame (2), back support rod (3), vehicle seat (4), vehicle frame (5), Foldable handlebar (6), front wheel carrier (7), foot-operated (10) and annex form Portable box-type folding bike, it is characterized in that front wheel carrier (7) is to have axis hole by horizontal beam one end, the other end turns to standpipe to be connected with front fork, front fork packs into turn in standpipe and forms, vehicle frame (5) is to be formed by connecting by transverse pipe by the plate of two parallel longitudinals and middle vehicle seat standpipe, before it, rear end respectively with front-axle beam (8), back support rod (3) is hinged, front-axle beam (8) is hinged with front wheel carrier (7), and there is chute on vehicle frame (5) plate, front wheel carrier (7) slide block is placed in groove, rear wheel frame (2) is hinged with back support rod (3), after folding, mutual shape is as zigzag, Foldable handlebar (6) lower end and front wheel carrier (7) steering tube hinged and locking, foot-operated (10) are positioned under vehicle frame (5), slide and rotate these parts and launch to become the car of riding for people, contraction is closed and is become boxed-section shape.
2. Portable box-type folding bike according to claim 1, it is characterized in that front rod (9) one end is hinged on front wheel carrier (7), the other end is hinged on vehicle frame (5) front end, middle connecting rod (11) one end is hinged on back support rod (3), the other end is hinged on front-axle beam (8) front end, rear linking rod (14) one end is hinged on vehicle frame (5) rear end, the other end is hinged on rear wheel frame (2), the angle of wherein rotating between front wheel carrier (7) and front-axle beam (8) is identical with the angle of front-axle beam (8) rotation with vehicle frame (5), form parallel rod, and have retaining groove on front wheel carrier (7) axle head, stop inordinate rotation between front wheel carrier (7) and front-axle beam (8).
3. Portable box-type folding bike according to claim 1, it is characterized in that having lateral pin to be arranged in the groove that the middle vehicle seat standpipe of vehicle frame (5) leaves on vehicle seat (4) saddle pipe, lock handle (12) is V-arrangement shape, be hinged on vehicle frame (5) and hold with spring, on the arm of one end, have as L shaped shape arc and radial groove, on rear wheel frame (2) arm, there is pivot pin to be arranged in chute, when vehicle seat (4) moves up and down, on vehicle seat (4) saddle pipe, lateral pin moves thereupon, promoting lock handle (12) rotates, drive back support rod (3) to rotate, after putting in place, at torque spring, pull lock handle (12) to rotate, deep-slotted chip breaker on it snaps in the pivot pin on rear wheel frame (2) arm, the other end gets lodged in the slip that stops lateral pin on vehicle seat (4) saddle pipe in the middle vehicle seat standpipe slots of vehicle frame (5), play locking action, reversion lock handle (12) is with regard to collapsible car load.
4. Portable box-type folding bike according to claim 1, there is jam nut the vehicle seat standpipe upper end that it is characterized in that vehicle frame (5), on it, there are two sections of screw threads, mesh respectively screw thread on vehicle seat (4) saddle pipe, the vehicle seat standpipe upper end screw thread of vehicle frame (5), when vehicle seat (4) saddle pipe is raised to position, turn the vehicle seat standpipe that nut blocks vehicle seat (4) saddle pipe and vehicle frame (5).
5. Portable box-type folding bike according to claim 1, it is characterized in that vehicle frame (5) plate chute lower end has in a bit of vertical channel and has lateral pin, front wheel carrier also has Baltimore groove on (7), front wheel carrier (7) slide into lower end lateral pin be stuck in front wheel carrier (7) upper groove, stop front wheel carrier (7) to slide.
6. Portable box-type folding bike according to claim 1, it is characterized in that rear linking rod (14) and vehicle frame (5) are hinged, on back support rod (3), the hinged axillare of rear wheel frame (2), have and rotate the required angle deep-slotted chip breaker of rear wheel frame (2), deep-slotted chip breaker is connected to radial slot, back support rod (3) has corresponding radial slot, in groove, be installed with lateral pin and hold with spring, when lateral pin slides into coincidence radial slot from deep-slotted chip breaker, rotate again another end slot of rear linking rod (14) and be stuck on lateral pin, stop the rotation between back support rod (3), rear wheel frame (2) and vehicle frame (5).
7. Portable box-type folding bike according to claim 1, it is characterized in that Foldable handlebar (6) is comprised of handgrip, handlebar upper support bar, lower support bar three parts, two handgrips are hinged on upper support bar axle bed, upper support bar lower end and lower support bar are hinged, the lower support bar other end is hinged on and is fixed on front wheel carrier (7) and turns on standpipe, with connecting rod, respectively handgrip, handlebar upper support bar, lower support bar are linked together, form interlock mode.
8. Portable box-type folding bike according to claim 1, it is characterized in that riding (10) is hinged on its foot-driven lever two ends axle bed by the longitudinal hinge of stretcher, when stretcher is holded up, being positioned at foot-driven lever side forms, the foot-driven lever front end of two foot-operated (10) is hinged on vehicle frame (5) front end axle, pedal connecting rod (12) one end is hinged on the foot-driven lever of stepping on (10), the other end is hinged on front rod (9), also can be hinged on back support rod (3) upper, form interlock mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210349875.3A CN103661724B (en) | 2012-09-20 | 2012-09-20 | Portable box-type folding bike |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210349875.3A CN103661724B (en) | 2012-09-20 | 2012-09-20 | Portable box-type folding bike |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103661724A true CN103661724A (en) | 2014-03-26 |
| CN103661724B CN103661724B (en) | 2018-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210349875.3A Active CN103661724B (en) | 2012-09-20 | 2012-09-20 | Portable box-type folding bike |
Country Status (1)
| Country | Link |
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| CN (1) | CN103661724B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104149906A (en) * | 2014-08-05 | 2014-11-19 | 黎龙飞 | Bicycle frame capable of being longitudinally and rapidly folded |
| CN105000108A (en) * | 2015-06-30 | 2015-10-28 | 王辉 | Folding backpack scooter provided with backrest |
| CN105438367A (en) * | 2015-12-23 | 2016-03-30 | 温州卓达运动健身器材有限公司 | Foldable vehicle frame |
| CN106314649A (en) * | 2015-06-30 | 2017-01-11 | 胡静宇 | Box type fast folding two-wheel vehicle |
| WO2022242208A1 (en) * | 2021-05-19 | 2022-11-24 | 邱树元 | Folding linkage bicycle frame |
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| CN102372060A (en) * | 2010-08-20 | 2012-03-14 | 马侠安 | Portable box type folding bicycle |
| CN102649455A (en) * | 2011-02-25 | 2012-08-29 | 马侠安 | Suitcase type folding bicycle |
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| US6032971A (en) * | 1998-02-06 | 2000-03-07 | Herder; Jaime | Folding bicycle frame |
| CN200992276Y (en) * | 2006-12-27 | 2007-12-19 | 刘克礼 | Folding bicycle |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104149906A (en) * | 2014-08-05 | 2014-11-19 | 黎龙飞 | Bicycle frame capable of being longitudinally and rapidly folded |
| CN104149906B (en) * | 2014-08-05 | 2017-11-24 | 黎龙飞 | A kind of quick longitudinal folding vehicle frame |
| CN105000108A (en) * | 2015-06-30 | 2015-10-28 | 王辉 | Folding backpack scooter provided with backrest |
| CN106314649A (en) * | 2015-06-30 | 2017-01-11 | 胡静宇 | Box type fast folding two-wheel vehicle |
| CN105000108B (en) * | 2015-06-30 | 2018-01-23 | 王家怡 | A kind of folding back hired car with backrest |
| CN105438367A (en) * | 2015-12-23 | 2016-03-30 | 温州卓达运动健身器材有限公司 | Foldable vehicle frame |
| CN105438367B (en) * | 2015-12-23 | 2018-04-03 | 温州卓达运动健身器材有限公司 | A kind of folding stand |
| WO2022242208A1 (en) * | 2021-05-19 | 2022-11-24 | 邱树元 | Folding linkage bicycle frame |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103661724B (en) | 2018-01-05 |
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