CN108068970A - Folding crank bicycle - Google Patents
Folding crank bicycle Download PDFInfo
- Publication number
- CN108068970A CN108068970A CN201611006661.0A CN201611006661A CN108068970A CN 108068970 A CN108068970 A CN 108068970A CN 201611006661 A CN201611006661 A CN 201611006661A CN 108068970 A CN108068970 A CN 108068970A
- Authority
- CN
- China
- Prior art keywords
- bicycle
- crank
- folding
- fixed
- big
- 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.)
- Pending
Links
- 240000004808 Saccharomyces cerevisiae Species 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M3/00—Construction of cranks operated by hand or foot
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M3/00—Construction of cranks operated by hand or foot
- B62M3/02—Construction of cranks operated by hand or foot of adjustable length
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Motorcycle And Bicycle Frame (AREA)
Abstract
Folding crank bicycle of the present invention is related to bicycle manufacturing industry, a kind of bicycle for as the vehicles or sports equipment.Existing bicycle crank length is fixed, and generally use gear shift mode reaches labour-saving purpose, changes gearratio, and leg can firmly mitigate, and still, the speed of bicycle also accordingly reduces.Folding crank bicycle solve technical solution be:Using folding two groups of two sections of bicycle cranks, gradually change the straight length of two sections of cranks in bicycle operation, drive bicycle rear shaft rotation.When to pedal, under conditions of two foot pedal radiuses of action are not increased, make distance between the foot pedal of stress and bicycle rear shaft elongated, increase the arm of force, reduce leg and exert oneself;Distance Shortened between the foot pedal and bicycle rear shaft that do not stress reduces leg movements scope.The transmission device of folding crank bicycle can be applied to by the occasion of the connecting rod drive shaft rotation of alternating movement.
Description
Technical field
Folding crank bicycle of the present invention is related to bicycle manufacturing industry, a kind of to use folding two sections of bicycle cranks,
Gradually change the straight length of two sections of cranks, the bicycle of driving bicycle rear shaft rotation in bicycle operation.
Background technology
The crank length of existing bicycle is fixed.The leg of people is exerted oneself during in order to reduce cycling, and generally use reduces
The mode of speed.By change pulley, change the sprocket wheel of crank handle turns and the gearratio of bicycle rear, both legs is made to be applied to crank
Torque change;This mode is although laborsaving, still, reduces the speed of service of bicycle.
If in the case where crank torque is constant, increase crank length, although the leg that can reduce cyclist is used
Power.But the motion amplitude of both legs can be increased, it is unfavorable for both legs to pedal, also, leg exercise limited extent;It is long to increase crank
Degree, is also limited be subject to bicycle pedal and ground minimum range.
The content of the invention
Folding crank bicycle of the present invention with two sections of folding cranks, substitutes existing one section of crank of bicycle.Big crank
1 is connected with bicycle rear shaft, and one end of the other end and small crank 1 is coaxial, and the other end and foot pedal of small crank 1 are coaxial.
Fixed chain wheels 1 are fixed together with vehicle frame, and fixed chain wheels 1 are connected by chain with mobile sprocket wheel 1, and big crank 1 encloses
When being rotated around bicycle rear shaft, under the constraint of chain, mobile sprocket wheel 1 is moved by the center of circle of bicycle rear shaft, with movement
The small crank 1 that sprocket wheel 1 connects remains that a direction is constant, realizes that big crank 1 and 1 straight length of small crank periodically become
Change.
As shown in figure 3, it is equal to 2 length of big crank 2 and small crank when the straight length of big crank 2 and small crank 2 is most long
The sum of degree;The straight length of big crank 1 and small crank 1 is most equal to the difference of 1 straight length of big crank 1 and small crank in short-term.
When sprocket wheel and chain are installed, by two groups of chains and fixed chain wheels and the occluding relation of rotating sprocket, two are adjusted
The initial position of suite handle.On the premise of two foot pedal radiuses of action are not increased, to pedal when, make the foot pedal of stress with from
Distance is elongated between driving hind axle, the arm of force is increased, in the case where torque is constant, it is possible to reduce exert oneself leg;It does not stress
Distance Shortened between foot pedal and bicycle rear shaft reduces the scope of activities of people's leg.
The hind axle of folding crank bicycle is rotated with crank on vehicle frame, is equipped between hind axle and rear wheel axle sleeve
Bicycle drive shaft, to pedal when, hind axle is opposite with trailing wheel motionless, downhill path or without to pedal when, hind axle it is opposite with trailing wheel turn
Dynamic, bicycle is run by inertia or external force.
Description of the drawings
Fig. 1 is the graphics of folding crank bicycle, and each unit number and title are as follows:1- vehicle frames, 2- rear wheels, 3- are big
Crank Isosorbide-5-Nitrae-small crank 1,7- foot pedals.
Fig. 2 is folding crank bicycle drive graphics, and each unit number and title are as follows:3- big cranks Isosorbide-5-Nitrae-small
Crank 1,5- big cranks 2,6- small cranks 2,7- foot pedals, 8- rear wheel axle sleeves, 9- rear vehicle shafts, 10- fixed chain wheels 1,11- are moved
Movable sprocket 1,12- chains, 13- flower-drum.
Fig. 3 folding crank bicycle drives, the graphics when big crank is parallel with small crank, each unit number with
Title is as follows:3- big cranks Isosorbide-5-Nitrae-small crank 1,5- big cranks 2,6- small cranks 2,7- foot pedals, 8- rear wheel axle sleeves, 9- rear cars
Wheel shaft, 10- fixed chain wheels 1,11- movement sprocket wheels 1,12- chains, 13- flower-drum.
Specific embodiment
Implement folding crank bicycle of the present invention, first have to the spy directly driven according to folding crank bicycle rear wheel
Point manufactures and designs vehicle frame, and at present, the production technology of bicycle is ripe, and the bicycle production line that can produce common vehicle frame can
Produce folding crank cycle frame.
Folding crank bicycle drive makes, with common mechanical processing technique it is achieved that selected axis
It holds as standard component.Other bicycle parts of folding crank bicycle can be with the universal component of ordinary bicycle.It folds bent
Handle bicycle drive cannot only be applied on bicycle, is also applied to and is revolved with the connecting rod drive shaft of alternating movement
On the device turned.
Folding crank bicycle have it is laborsaving in the case where torque is constant, it is simple in structure, it is easy to maintenance the features such as.
Claims (5)
1. a kind of folding crank bicycle, it is characterized in that:The crank of folding crank bicycle rear shaft rotation is driven, it can by two sections
It is formed with the crank of folding, big crank 1 rotates small crank 1, change big crank 1 by fixed chain wheels 1, chain, mobile sprocket wheel 1
With the angle of small crank 1, the straight length generating period variation of two sections of folding cranks.
2. folding crank bicycle big crank 1 according to claim 1, it is characterized in that:Big crank 1 is fixed on folding crank
On bicycle rear wheel axis, rear vehicle shaft rotation is driven.
3. folding crank bicycle fixed chain wheels 1 according to claim 1, it is characterized in that:Fixed chain wheels 1 are fixed on folding
On crank bicycle vehicle frame, do not rotate.
4. folding crank bicycle according to claim 1 moves sprocket wheel 1, technical characteristic is:Mobile sprocket wheel 1 and Chinese yeast
Handle 1 is fixed together, and under the constraint of chain, moves, does not rotate by the center of circle of hind axle.
5. folding crank bicycle rear shaft according to claim 1, it is characterized in that:Hind axle is rotated compared with vehicle frame;
Hind axle and trailing wheel synchronous rotary when to pedal, hind axle are relatively rotated with trailing wheel when not to pedal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201611006661.0A CN108068970A (en) | 2016-11-09 | 2016-11-09 | Folding crank bicycle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201611006661.0A CN108068970A (en) | 2016-11-09 | 2016-11-09 | Folding crank bicycle |
Publications (1)
Publication Number | Publication Date |
---|---|
CN108068970A true CN108068970A (en) | 2018-05-25 |
Family
ID=62162891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201611006661.0A Pending CN108068970A (en) | 2016-11-09 | 2016-11-09 | Folding crank bicycle |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN108068970A (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB494462A (en) * | 1937-12-01 | 1938-10-26 | Arthur Keene | Pedalling mechanism, particularly for a cycle |
GB8334388D0 (en) * | 1983-12-23 | 1984-02-01 | Wu Ching Jong | Bicycle driven mechanism |
EP0450583A1 (en) * | 1990-04-04 | 1991-10-09 | Shigeyuki Maruyama | A bicycle pedal-arm arrangement |
CN2351362Y (en) * | 1998-07-01 | 1999-12-01 | 黄昌友 | Directly driving wheel bicycle |
WO2000009388A1 (en) * | 1998-08-13 | 2000-02-24 | Shen Jiang | A high-speed bicycle |
WO2003104074A1 (en) * | 2002-05-06 | 2003-12-18 | Bojan Boncelj | Fast bicycle with two-fold pedals |
JP2004155401A (en) * | 2002-11-07 | 2004-06-03 | Takao Watanabe | Bending and stretching crank mechanism of bicycle |
CN206520717U (en) * | 2016-11-09 | 2017-09-26 | 刘英凯 | Folding crank bicycle |
-
2016
- 2016-11-09 CN CN201611006661.0A patent/CN108068970A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB494462A (en) * | 1937-12-01 | 1938-10-26 | Arthur Keene | Pedalling mechanism, particularly for a cycle |
GB8334388D0 (en) * | 1983-12-23 | 1984-02-01 | Wu Ching Jong | Bicycle driven mechanism |
EP0450583A1 (en) * | 1990-04-04 | 1991-10-09 | Shigeyuki Maruyama | A bicycle pedal-arm arrangement |
CN2351362Y (en) * | 1998-07-01 | 1999-12-01 | 黄昌友 | Directly driving wheel bicycle |
WO2000009388A1 (en) * | 1998-08-13 | 2000-02-24 | Shen Jiang | A high-speed bicycle |
WO2003104074A1 (en) * | 2002-05-06 | 2003-12-18 | Bojan Boncelj | Fast bicycle with two-fold pedals |
JP2004155401A (en) * | 2002-11-07 | 2004-06-03 | Takao Watanabe | Bending and stretching crank mechanism of bicycle |
CN206520717U (en) * | 2016-11-09 | 2017-09-26 | 刘英凯 | Folding crank bicycle |
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