CN109808419A - Shrinkable wheel - Google Patents

Shrinkable wheel Download PDF

Info

Publication number
CN109808419A
CN109808419A CN201910071888.0A CN201910071888A CN109808419A CN 109808419 A CN109808419 A CN 109808419A CN 201910071888 A CN201910071888 A CN 201910071888A CN 109808419 A CN109808419 A CN 109808419A
Authority
CN
China
Prior art keywords
spoke
wheel
pellet
component
circle
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.)
Granted
Application number
CN201910071888.0A
Other languages
Chinese (zh)
Other versions
CN109808419B (en
Inventor
王兴松
沈冬华
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.)
Southeast University
Original Assignee
Southeast University
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 Southeast University filed Critical Southeast University
Priority to CN201910071888.0A priority Critical patent/CN109808419B/en
Publication of CN109808419A publication Critical patent/CN109808419A/en
Application granted granted Critical
Publication of CN109808419B publication Critical patent/CN109808419B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Tires In General (AREA)

Abstract

The invention discloses a kind of shrinkable wheels, including wheel hub, the first spoke component, the second spoke component, third spoke component, the 4th spoke component and rim assemblies.First spoke component, the second spoke component, third spoke component, the 4th spoke component are sequentially connected the telescopic component of composition, and rim assemblies are fixedly connected with the 4th spoke component end.Wheel is in the deployed state, it between second spoke component and third spoke component, is locked respectively by the first pellet and the second pellet between third spoke component and the 4th spoke component, adjacent rim assemblies join end to end, and locked by locking pin, form complete circular rim.The configuration of the present invention is simple, shrinking percentage is high, and damping property is excellent.

Description

Shrinkable wheel
Technical field
The present invention relates to wheels, and in particular to a kind of shrinkable wheel.
Background technique
The wheel for probe vehicles researched and developed both at home and abroad now is all wheel, and the movement of wheel adapts to ground Property it is strong, it is easy to control, but general fixed-size wheel is small to the adaptability of surface relief and barrier, exist for work The probe vehicles of complicated landform, the bigger obstacle detouring of wheel is better, and while emitting, to need wheel to take up space the smaller the better.
Meanwhile the greatest problem that contraction bicycle in the market or wheelchair face is exactly that wheel can not be shunk, and causes to receive It takes up space after contracting still larger.Existing shrinkable wheel shrinking percentage is small, and size is still very big after contraction, and damping property Difference limits its use.
Summary of the invention
Goal of the invention: the object of the present invention is to provide a kind of shrinkable wheels, solve existing shrinkable wheel, and structure is multiple Miscellaneous, shrinking percentage is small, the problem of damping property difference.
Technical solution: shrinkable wheel of the present invention, including wheel hub, several scalable spoke components and several wheel rims Component, is provided with several spoke mounting holes on the wheel hub, and by stomata connection in adjacent spoke mounting hole, the stomata is external Gas source, the scalable spoke component are removably mounted in spoke mounting hole, and the spoke component and rim assemblies are detachable Connection, the rim assemblies include main wheel circle and accessory whorl circle, and accessory whorl circle one end is provided with gutter, and the other end passes through connection Pin is rotatablely connected with main wheel circle one end, and the main wheel circle other end is provided with to be connect with the accessory whorl circle of accessory whorl circle one end adaptation Slot and wheel rim lock pin holes, mounting rim locking pin in the wheel rim pin hole, the wheel rim locking pin and wheel rim pin hole it Between be provided with return springs.
Wherein, the scalable spoke component includes the first spoke component, the second spoke component, third spoke component and the Four spoke components, the spoke of four spoke components sequentially coaxially connect together.
The first spoke component includes the first spoke and the first sealing ring, and the first sealing ring is mounted on the first spoke one End, first spoke one end are threadably mounted in spoke mounting hole by spoke installation, and the other end is provided with the first positive stop lug boss.
The second spoke component includes the second spoke, spacing collar and the second sealing ring, and second spoke one end is provided with The first rib being adapted to the first positive stop lug boss, second spoke one end are equipped with the second sealing ring, and second spoke is another One end is equipped with spacing collar, and second spoke side is provided with the first lock hole.
The third spoke component includes third spoke and the first pellet for being adapted to the first lock hole, the third spoke It is inside screwed the fixed plug of pellet, first pellet is mounted on the pellet mounting hole and the fixed plug of pellet of third spoke It is interior, it is provided with first back-moving spring in the cavity between first pellet and the fixed plug of pellet, third spoke side is set It is equipped with the second lock hole, the third spoke is provided with the second positive stop lug boss and the second rib, second rib and limit sleeve Cylinder adaptation.
The second pellet that the 4th spoke component includes the 4th spoke and is adapted to second lock hole, described second Pellet is mounted in the pellet mounting hole of the 4th spoke, and the second reset bullet is provided between second pellet and pellet mounting hole Spring, the 4th spoke one end are provided with the third rib being adapted to the second positive stop lug boss.
Wheel rim fixation hole main wheel circle one end setting open slot and be adapted to the 4th spoke, and pass through two spiral shells Silk clamps the 4th spoke.
One end of the wheel rim locking pin connects pull ring after stretching out in main wheel circle.
The utility model has the advantages that the spoke of wheel uses multi-joint telescoping linkage in the present invention, Multi-section telescopic rod can provide larger Magnification so that dimensional contraction before and after the expansion of wheel is than big, diameter dimension is small after contraction, wheel thickness direction ruler It is very little not increase;Support force is provided using high pressure gas between the first spoke component and the second spoke component in the present invention, remaining Realize that rigid locking, rigid locking make the coupling stiffness between adjacent spoke component very big by pellet between spoke component, Bearing capacity is big, and pneumatic support has certain elasticity, and different pneumatic thrusts can be obtained by adjusting air pressure size, So that entire wheel carrying range is big, damping performance is good;In the deployed state, adjacent rim assemblies are logical for wheel in the present invention The locking of wheel rim locking pin is crossed, the lateral deflection of wheel rim is limited, so that the lateral stability of entire wheel is high;Wheel rim in the present invention Component is divided into main wheel circle and accessory whorl circle, and main wheel circle and accessory whorl circle are by pin connection, after wheel expansion, on the outside of main wheel circle and accessory whorl circle Circular arc seamless connection is connected at 1/8 circular arc, eight rim assemblies head and the tail, complete circle is formed, so that the traveling of wheel is more flat It is suitable.
Detailed description of the invention
Fig. 1 is that Fig. 1 is wheel main sectional view of the invention;
Fig. 2 is wheel hub cross-sectional view;
Fig. 3 is the first spoke assemble cross-section;
Fig. 4 is the second spoke assemble cross-section;
Fig. 5 is third spoke assemble cross-section;
Fig. 6 is the 4th spoke assemble cross-section;
Fig. 7 is rim assemblies side view;
Fig. 8 is the A-A cross-sectional view in Fig. 7;
Fig. 9 is the B-B cross-sectional view in Fig. 7;
Figure 10 is the structure chart after wheel is shunk;
Figure 11 is the stereoscopic schematic diagram after wheel expansion;
Figure 12 is the stereoscopic schematic diagram after wheel is shunk.
Specific embodiment
The present invention will be described with reference to the accompanying drawing.
As shown in figs. 1-12, a kind of structure of shrinkable wheel includes wheel hub 1, spoke mounting hole 11, stomata 12, the first spoke Bar assembly 2, the first spoke 21, spoke installation screw thread 211, the first positive stop lug boss 212, sealing ring 22, the second spoke component 3, the Two spokes 31, the first lock hole 311, the first rib 312, spacing collar 32, the second sealing ring 33, third spoke component 4, The 42, first pellet 43 of the fixed plug of three spokes 41, the second lock hole 411, the second positive stop lug boss 412, the second rib 413, pellet, lock Determine screw 44, first back-moving spring 45, the 4th spoke component 5, the 4th spoke 51, third rib 511, the second pellet 52, second Reset spring 53, rim assemblies 6, main wheel circle 61, wheel rim fixation hole 611, open slot 612, wheel rim lock pin holes 613, accessory whorl circle Link slot 614, wheel rim locking pin 62, locking pin reset spring 63, pull ring 64, connecting pin 65, accessory whorl circle 66, gutter 661, wheel Enclose fixed screw 67, nut 68.
As shown in Figure 1,2 one end of the first spoke component is inserted in spoke mounting hole 11, and 211 He of screw thread is installed by spoke Spoke mounting hole 11 is fixedly connected, the first spoke component 2, the second spoke component 3, third spoke component 4, the 4th spoke component 5 It sequentially coaxially connects, rim assemblies 6 are fixedly connected by wheel rim fixation hole 611 with 51 end of the 4th spoke, and pass through open slot 612, wheel rim fixed screw 67 and nut 68 are locked.
As shown in Fig. 2, being uniformly distributed eight spoke mounting holes 11 on wheel hub 1, adjacent 11 bottom of spoke mounting hole is logical Air passing hole 12 is interconnected, and the external same air pressure source of stomata 12 can guarantee all first spoke component, 2 inside gas in this way It presses identical.
As shown in figure 3, the first spoke component 2 includes the first spoke 21, sealing ring 22, the first sealing ring 22 is mounted on first In the sealing ring mounting groove of 21 one end of spoke, one end adjacent with sealing ring mounting groove is provided with spoke installation on the first spoke 21 Screw thread 211, the other end of the first spoke 21 are provided with the first positive stop lug boss 212.
As shown in figure 4, the second spoke component 3 includes the second spoke 31, spacing collar 32, the second sealing ring 33, the second spoke 31 side of item is provided with the first lock hole 311, and 31 one end of the second spoke is provided with the first rib 312, the installation of the second sealing ring 33 In the sealing ring mounting groove of 31 one end of the second spoke, spacing collar 32 and the first spoke 21 are coaxial, and are fixedly mounted on second 31 other end of spoke.
As shown in figure 5, third spoke component 4 includes third spoke 41, the 42, first pellet 43 of the fixed plug of pellet, locking spiral shell Silk 44, first back-moving spring 45,41 side of third spoke are provided with the second lock hole 411, and one end of third spoke 41 is provided with Second positive stop lug boss 412, one end of third spoke 41 are provided with the second rib 413, and the fixed plug 42 of pellet is located at third spoke 41 Inside, and be fixedly connected by lock screw 44 with third spoke 41, the side difference of third spoke 41 and the fixed plug 42 of pellet It is provided with pellet mounting hole, the pellet mounting hole of the fixed plug 42 of the pellet mounting hole and pellet of third spoke 41 is coaxial, the first bullet Son 43 is located in sub- mounting hole, and first back-moving spring 45 is in the cavity between the first pellet 43 and lock screw 44, respectively It is affixed with the end of the first pellet 43 and 44 end of lock screw.
As shown in fig. 6, the 4th spoke component 5 include the 4th spoke 51, the second pellet 52, second back-moving spring 53, the 4th 51 one end of spoke is provided with third rib 511, and 51 side of the 4th spoke is provided with pellet mounting hole, and the second pellet 52 and second is multiple Position spring 53 is located in pellet mounting hole, and 53 both ends of second back-moving spring are respectively at 52 end of the second pellet and pellet mounting hole bottom Portion is affixed.Second pellet 52 can be flexible along the axis direction of the second pellet 52 under the effect of second back-moving spring 53.
Wherein, 2 one end of the first spoke component is inserted in spoke mounting hole 11, and installs screw thread 211 and spoke by spoke Mounting hole 11 is fixedly connected, and the first spoke component 2, the second spoke component 3, third spoke component 4, the 4th spoke component 5 are successively Coaxially connected, rim assemblies 6 are fixedly connected by wheel rim fixation hole 611 with 51 end of the 4th spoke, and by open slot 612, Wheel rim fixed screw 67 and nut 68 are locked.
As shown in figure 9, rim assemblies 6 include main wheel circle 61, wheel rim locking pin 62, locking pin reset spring 63, pull ring 64, Connecting pin 65, accessory whorl circle 66, wheel rim fixed screw 67, nut 68, main wheel circle 61 and accessory whorl circle 66 are connected by connecting pin 65, main 61 one end of wheel rim is provided with wheel rim fixation hole 611 and open slot 612,61 end of main wheel circle, perpendicular to 611 axis of wheel rim fixation hole Direction setting is there are two screw hole, and two wheel rim fixed screws 67 are inserted in screw hole, and 67 one end of wheel rim fixed screw passes through spiral shell Line and nut 68 connect.66 one end of accessory whorl circle is provided with gutter 661, and 61 one end of main wheel circle is provided with accessory whorl circle link slot 614, In the deployed state, 66 end of accessory whorl circle is inserted in the accessory whorl circle link slot 614 of adjacent main wheel circle 61 wheel.Main wheel circle 61 1 End is provided with wheel rim lock pin holes 613, and wheel rim locking pin 62 is inserted in wheel rim lock pin holes 613, and locking pin reset spring 63 In cavity between wheel rim locking pin 62 and main wheel circle 61, both ends are locked with the step surface of wheel rim locking pin 62 and wheel rim respectively 613 bottom surface of pin hole is affixed, and the small end of wheel rim locking pin 62 is stretched out from main wheel circle 61, and the small end of wheel rim locking pin 62 is provided with small Hole, pull ring 64 are through in aperture.
Wheel in the deployed state, as shown in Figure 1, be passed through high pressure gas into stomata 12, under high pressure gas effect, the The first rib 312 on two spokes 31 is affixed with the first positive stop lug boss 212 on the first spoke 21.The head of first pellet 43 exists First back-moving spring 45 is stretched out from the first lock hole 311 under acting on, so that the second rib 413 and second on third spoke 41 32 end of spacing collar in spoke component 3 is affixed, and the head of the second pellet 52 is under the effect of second back-moving spring 53 from second It is stretched out in lock hole 411, so that the third rib 511 on the 4th spoke 51 and the second positive stop lug boss 412 on third spoke 41 It is affixed, 66 end of accessory whorl circle is inserted in the accessory whorl circle link slot 614 of adjacent main wheel circle 61, and wheel rim locking pin 62 is multiple in locking pin Position spring 63 is inserted in gutter 661 under acting on, and prevents 66 end of accessory whorl circle from deviating from from accessory whorl circle link slot 614.
When shrinking wheel, high pressure gas is excluded from stomata 12, respectively depresses the first pellet 43 and the second pellet 52, Wheel rim locking pin 62 is pulled by pull ring 64, so that wheel rim locking pin 62 is deviate from from gutter 661, by rim assemblies 6 around wheel Circle 611 axis of fixation hole rotates by a certain angle, so that 66 end of accessory whorl circle is deviate from from accessory whorl circle link slot 614, along first The axis direction of spoke component 2 depresses rim assemblies 6 to center, and all spoke component concentric contractions get up, by accessory whorl circle 66 around Connecting pin 65 rotates by a certain angle, and folds up it, to complete the contraction of wheel, has lesser diameter, vehicle after contraction Wheel thickness does not change.

Claims (8)

1. a kind of shrinkable wheel, which is characterized in that including wheel hub (1), several scalable spoke components and several rim assemblies, It is provided with several spoke mounting holes (11) on the wheel hub (1), is connected in adjacent spoke mounting hole (11) by stomata (12), institute Stomata (12) external gas source is stated, the scalable spoke component is removably mounted in spoke mounting hole (11), the spoke group Part is detachably connected with rim assemblies (6), and the rim assemblies (6) include main wheel circle (61) and accessory whorl circle (66), the accessory whorl Circle (66) one end is provided with gutter (661), and the other end is rotatablely connected by connecting pin (65) and main wheel circle (61) one end, described Main wheel circle (61) other end is provided with the accessory whorl circle link slot (614) and wheel rim locking pin being adapted to described accessory whorl circle (66) one end Hole (613), the interior mounting rim locking pin (62) of wheel rim lock pin holes (613), the wheel rim locking pin (62) and rim lock Return springs (63) are provided between fixed pin hole (613).
2. shrinkable wheel according to claim 1, which is characterized in that the scalable spoke component includes the first spoke Component (2), the second spoke component (3), third spoke component (4) and the 4th spoke component (5), the spokes of four spoke components according to It is secondary coaxially to connect together.
3. shrinkable wheel according to claim 2, which is characterized in that the first spoke component (2) includes the first spoke Item (21) and the first sealing ring (22), the first sealing ring (22) are mounted on the first spoke (21) one end, the first spoke (21) one end It is mounted in spoke mounting hole by spoke installation screw thread (211), the other end is provided with the first positive stop lug boss (212).
4. shrinkable wheel according to claim 3, which is characterized in that the second spoke component (3) includes the second spoke Item (31), spacing collar (32) and the second sealing ring (33), the second spoke (31) one end are provided with and the first positive stop lug boss (212) The first rib (312) of adaptation, described second spoke (31) one end are equipped with the second sealing ring (33), second spoke (31) The other end is equipped with spacing collar (32), and the second spoke (31) side is provided with the first lock hole (311).
5. shrinkable wheel according to claim 4, which is characterized in that the third spoke component (4) includes third spoke Item (41) and the first pellet (43) being adapted to the first lock hole, the third spoke (41) is interior to be fixed with bullet by screw (44) The fixed plug (42) of son, first pellet (43) are mounted on the pellet mounting hole (311) and the fixed plug of pellet of third spoke (41) (42) in, first back-moving spring (45), institute are provided in the cavity between first pellet (43) and the fixed plug (42) of pellet It states third spoke (41) side to be provided with the second lock hole (411), the third spoke (41) is provided with the second positive stop lug boss (412) it is adapted to the second rib (413), second rib (413) with spacing collar (32).
6. shrinkable wheel according to claim 5, which is characterized in that the 4th spoke component (5) includes the 4th spoke Item (51) and the second pellet (52) being adapted to second lock hole (411), second pellet (52) are mounted on the 4th spoke In the pellet mounting hole of item (51), second back-moving spring (53) are provided between second pellet (52) and pellet mounting hole, 4th spoke (51) one end is provided with the third rib (511) being adapted to the second positive stop lug boss (412).
7. shrinkable wheel according to claim 6, which is characterized in that described main wheel circle (61) one end setting open slot and The wheel rim fixation hole (611) being adapted to the 4th spoke (51), and pass through two the 4th spokes (51) of screw-clamped.
8. shrinkable wheel according to claim 1, which is characterized in that one end of the wheel rim locking pin (62) is from main wheel It encloses in (61) after stretching out and connects pull ring (64).
CN201910071888.0A 2019-01-25 2019-01-25 Retractable wheel Active CN109808419B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910071888.0A CN109808419B (en) 2019-01-25 2019-01-25 Retractable wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910071888.0A CN109808419B (en) 2019-01-25 2019-01-25 Retractable wheel

Publications (2)

Publication Number Publication Date
CN109808419A true CN109808419A (en) 2019-05-28
CN109808419B CN109808419B (en) 2021-11-26

Family

ID=66605046

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910071888.0A Active CN109808419B (en) 2019-01-25 2019-01-25 Retractable wheel

Country Status (1)

Country Link
CN (1) CN109808419B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023109602A1 (en) * 2021-12-13 2023-06-22 舒继锋 Automatically foldable wheel and automatically foldable vehicle

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR430215A (en) * 1911-05-10 1911-10-11 Adolphe Besset Elastic wheel for vehicles
FR508468A (en) * 1920-01-16 1920-10-13 Hubert Charles Baquie Pneumatic wheel for motor cars and others
US3802743A (en) * 1972-04-17 1974-04-09 Spector G Variable diameter wheel
CN101537770A (en) * 2009-04-20 2009-09-23 哈尔滨工业大学 Probe vehicle wheel with variable diameter elastically capable of automatic extension
CN101844483A (en) * 2010-05-17 2010-09-29 北京航空航天大学 Variable-diameter wheel leg combined wheel structure
KR20120071187A (en) * 2010-12-22 2012-07-02 삼성테크윈 주식회사 Wheel and vehicle having the same
CN202518029U (en) * 2012-04-10 2012-11-07 宋政亮 Tire with damping device
CN104802589A (en) * 2015-05-15 2015-07-29 黄炳全 Foldable and retractable bicycle wheel
CN206186667U (en) * 2016-11-24 2017-05-24 兰州交通大学 Atmospheric pressure spoke type shock attenuation wheel
CN206265112U (en) * 2016-11-17 2017-06-20 杨世冬 A kind of new obstacle-overpass wheel
CN206579401U (en) * 2017-03-10 2017-10-24 中国石油大学(华东) A kind of Novel off-road vehicle wheel
CN108583150A (en) * 2018-05-15 2018-09-28 李良杰 Deformable wheel

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR430215A (en) * 1911-05-10 1911-10-11 Adolphe Besset Elastic wheel for vehicles
FR508468A (en) * 1920-01-16 1920-10-13 Hubert Charles Baquie Pneumatic wheel for motor cars and others
US3802743A (en) * 1972-04-17 1974-04-09 Spector G Variable diameter wheel
CN101537770A (en) * 2009-04-20 2009-09-23 哈尔滨工业大学 Probe vehicle wheel with variable diameter elastically capable of automatic extension
CN101844483A (en) * 2010-05-17 2010-09-29 北京航空航天大学 Variable-diameter wheel leg combined wheel structure
KR20120071187A (en) * 2010-12-22 2012-07-02 삼성테크윈 주식회사 Wheel and vehicle having the same
CN202518029U (en) * 2012-04-10 2012-11-07 宋政亮 Tire with damping device
CN104802589A (en) * 2015-05-15 2015-07-29 黄炳全 Foldable and retractable bicycle wheel
CN206265112U (en) * 2016-11-17 2017-06-20 杨世冬 A kind of new obstacle-overpass wheel
CN206186667U (en) * 2016-11-24 2017-05-24 兰州交通大学 Atmospheric pressure spoke type shock attenuation wheel
CN206579401U (en) * 2017-03-10 2017-10-24 中国石油大学(华东) A kind of Novel off-road vehicle wheel
CN108583150A (en) * 2018-05-15 2018-09-28 李良杰 Deformable wheel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023109602A1 (en) * 2021-12-13 2023-06-22 舒继锋 Automatically foldable wheel and automatically foldable vehicle

Also Published As

Publication number Publication date
CN109808419B (en) 2021-11-26

Similar Documents

Publication Publication Date Title
US10071786B2 (en) Two-wheeled vehicle with rear-wheel suspension
US20170341469A1 (en) Non-pneumatic tire
CN109808419A (en) Shrinkable wheel
CN205952045U (en) Steering wheel quick assembly disassembly structure of car
CN108328427A (en) A kind of ARTMechanical gas pressure axis for the retractable volume system in papermaking and printing packaging equipment rises axis
CN104802589A (en) Foldable and retractable bicycle wheel
CN102042197B (en) Rotary bidirectional air charging connector
CN213831870U (en) Steering linkage assembly and commercial vehicle
CN109649076A (en) Variable-diameter wheel
US6644443B1 (en) Transportation device, especially a wheelchair, with a braking system
CN205890435U (en) Vehicle swing arm assembly
CN205136310U (en) Fast -assembled nut
CN211809834U (en) Inner steering pull rod and inner steering pull rod assembly
CN211088618U (en) Outdoor special connector for cable
CN208470071U (en) Intake type elasticity lashing chain
CN217170687U (en) Mine car locking device
CN203974429U (en) The built-in emergency facility of blowing out of a kind of vacuum tire with cylinder
CN203623871U (en) Mother-and-baby tricycle folding and rotating mechanism
CN110356166A (en) A kind of shock-absorbing wheel
CN205587990U (en) Variable wheel hub processing platform
CN205185703U (en) Bicycle rim spoke auto -lock structure
CN104595159B (en) Gas nozzle joint capable of being mounted easily and conveniently
US20210245868A1 (en) Landing gear for an aircraft weighing less than 5.7 tonnes
CN221273371U (en) Telescopic folding universal pushing wheel
CN105235801A (en) Bicycle with folding function

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant