CN1010293B - Bicycle with rocker in driving mechanism having function of self-adaptive speed variation - Google Patents
Bicycle with rocker in driving mechanism having function of self-adaptive speed variationInfo
- Publication number
- CN1010293B CN1010293B CN 88102229 CN88102229A CN1010293B CN 1010293 B CN1010293 B CN 1010293B CN 88102229 CN88102229 CN 88102229 CN 88102229 A CN88102229 A CN 88102229A CN 1010293 B CN1010293 B CN 1010293B
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- CN
- China
- Prior art keywords
- chain
- wheel
- bicycle
- speed
- bar
- 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.)
- Expired
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Abstract
The present invention relates to a two-wheel bicycle of which the pedals are vertically pedaled and the driving device is in a rocking rod type. A rotating rod in the driving device has the function of self-adaptive speed variation. When people riding the two-wheel bicycle climb a slope, the self-adaptive deceleration can be realized with the increase of pedaling force. The pedaling force of a pedal crank is transmitted to a left fly wheel and a right fly wheel on a rear axle by the rotating rod and a chain to drive the rear wheel of the bicycle. The bicycle can backward move by that the fly wheels have the function of backward movement. The machine dimension is optically designed by human mechanics experiments, and thus, the rider can feel brisk with labor saving, stable and comfortable.
Description
The present invention relates to the rocking bar propelled bicycles, belong to overall structure and the transmission and the speed-changing mechanism field of bicycle.
Bicycle has finalized the design almost by 1879 since invention in 1818.In the last hundred years, its transmission principle does not change, because traditional chain-driving is fairly simple rationally, therefore continues to use this transmission for a long time.
Early eighties, the U.S. releases a kind of later-model bicycle transmission principle, i.e. rocker-type transmission principle (see figure 1), U.S. Patent number is (4,574,649) (see figure 2).This principle can be eliminated near the poor efficiency stroke of ordinary bicycle crank upper and lower dead center position, makes bicycle that higher exerting oneself be arranged, its effect can be laborsaving half.In addition, owing to adopted the rocker-type transmission, just can realize speed change as long as change the coupled position of chain on rocking bar, simple in structure, speed range is wider.But on gear shift mode, need stop doing business in the speed-change process of existing rocker-type vehicle scrunches, and this is totally unfavorable for carry out speed change in upward journey.Another significant drawbacks of rocking bar transmission is that bicycle can not be retrodicted, and when retrodicting, arbitrary rocking bar is put end position, just can not continue to retrodict, and may cause the inconvenience in the use.
The objective of the invention is to replace traditional transmission shifting mechanism with a kind of new transmission device and speed-changing mechanism.The present invention is on the basis of rocking bar transmission scheme, shortcoming at existing various speed-changing mechanisms, the design of " adaptive rate " has been proposed, make speed-change process have certain adaptive ability, promptly when going up a slope, can realize corresponding reduction of speed with the size of the gradient, and in the process of comformability speed change, needn't end to drive.But the present invention has designed the backward flywheel, and when bicycle was retrodicted, the very heavy automatic disengagement in the flywheel had realized retrodicting freely.
In addition, feel laborsaving two approach that have in the time of making the people by bike.The one, improve the driving efficiency of movable parts, the 2nd, come the total arrangement and the size of mechanism are optimized design with body mechanics's achievement in research, the bicyclist is felt comfortably cool when riding, easily, be easy to have an effect, produce the labour-saving and feel.The present invention has made the computation optimization result of mechanism's overall dimension through body mechanics's experimental investigation.
The present invention is on the basis of last application for a patent for invention numbers 87100698, has done comprehensive improvement.
Fig. 1, Fig. 2 are prior arts.
Fig. 3 is an overall structure of the present invention.
Fig. 4 a is the transmission device block diagram.Fig. 4 b is a telescopic shaft.
Fig. 5 is the optimization size scheme drawing of rocker-type driving device.
Fig. 6 a is a rocking bar in-to-in transmission system.Fig. 6 b is the sleeve minor axis.
But Fig. 7 a is the backward flywheel.Fig. 7 b is the backward control mechanism.
Below in conjunction with accompanying drawing, introduce in detail particular content of the present invention.
Fig. 3 is the concrete structure of this car. On the axis of vehicle frame (1), left and right crank (2) is installed, the crank front end is pedal, rocking bar (3) fixedly links with crank at a certain angle. Rocking bar is originally as a speed change gear, in speed changing control mechanism and adaptive rate mechanism are arranged, the steel wire rope (4) of drawing by the lower end carries out gear change by the control crank (5) that is installed on the handlebar, and the position of slide block (7) on rocking bar of control chain (6) end is to realize speed change. Be installed in left and right two flywheels (8) and chain engagement on the rear axle, chain pull is passed on the rear wheel, drive bicycle and advance. Chain has left and right two sections, and the middle steel cable (9) that connects, steel wire rope are walked around the reverse wheel (10) that the axis front lower place is installed on the vehicle frame and realized commutation, and namely left and right sides pedal drives mutually this under that.
Figure (4) is the transmission mechanism stereogram, the relation that two cover mechanisms link by chain about can more clearly finding out. In the junction of steel wire rope and chain, an extension sleeve (11) with Telescopic is arranged, stage clip (12) and garden slide block (13) are arranged in this extension sleeve. When the chain pulling force strengthens, can automatically extend, change in order to the difference that adapts to speed change rear chain length, and alleviate the impulsive force that in the chain of pedal Upper-lower Limit position, produces. Below flywheel, about a chain cover (14) is respectively arranged, guarantee chain unlikely coming off when starting.
Figure (5) is the crank of rocker-type driving device, rocking bar and with respect to rear axle O
3Relative position.O
2Transmission center for bent axle.Marked the parameter symbol of respectively optimizing size on the figure.The mechanism size of rocker gear of the present invention through body mechanics test and ergonomics research, draws the reasonable target function, and machine Optimal design and calculation has as calculated drawn the optimization size of mechanism again, mainly comprises:
(1) crank length L
1=280～300 millimeters
(2) rocking bar and crank angle Φ=140 °～150 °
(3) crank center position O
2(axis that is equivalent to the transmission car) and the position O of rear shaft center
3Relative position coordinates be:
x
0=320～380 millimeters
y
0=50～80 millimeters
(4) ram travel position: maximum L
2=210～230 millimeters
Minimum L
2'=120～140 millimeters
Such size when riding, has comparatively ideal outputting power characteristic, and it is laborsaving that the bicyclist is felt relief.
Figure (6) be a rocking bar in-to-in transmission system, comprises variable speed control mechanism and suitable capable certainly control mechanism, and the right is passed on the bar handle that is installed on the handlebar by the steel rope (4) that links with pull bar (15).Slide block (7) is gone up by chain gusset piece (16) and is connected chain, links with flywheel again.Variable speed control mechanism wherein, by pull bar, raising speed tooth plate (17), reduction of speed tooth plate compositions such as (18).Tooth plate is used for controlling the motion of slide block, and the profile of tooth of tooth plate is a serration, and when tooth plate rose, slide block can skid off along the inclined-plane, can not slide to vertical surface, causes the unidirectional slidably trend of (being raising speed or reduction of speed).Groove is arranged on the tooth plate, and the sleeve minor axis (19) on the pull bar is in groove, and pull bar is spurred by steel rope by bar handle, and the sleeve minor axis horizontally slips in groove, makes two tooth plates alternately release or take in simultaneously, in realizing back, and raising speed, locking, four kinds of functions of reduction of speed.Stage clip (20) is installed between pull bar and the spring limiting board (21), guarantees that the backhaul action of pull bar realizes smoothly.Two pilot sleeves (22) are used for the motion of tooth plate is led, and guarantee the successfully upper and lower slip of tooth plate, realize the control to slide block.Adaptive control mechanism wherein, by slide bar (23), stage clip (24) and stop collar compositions such as (25).Slide block set is on slide bar, and two stage clips also are enclosed within on the slide bar, and the centre separates with stop collar, and the effect of stop collar is that slide block can be realized when two tooth plates all descend in automatic the returning.Pilot sleeve (26) is used for to stop collar guiding and spacing, and reed (27) and backing plate (28) are used for pushing down slide block, make the unlikely job-hopping of slide block.The propelling thrust that slide block slides along the chute on the rocking bar is from the pulling force of chain, and the direction of slip is subjected to the control of tooth plate, and slip institute zone of reach is the restriction of the pressure of stage clip again then, and the degree that this pressure confinement slide block glides (sliding) to the right realizes adaptation function.
Figure (7) but be backward flywheel (8), comprise sprocket wheel and backward control mechanism.Chain wheel set is contained on the rear axle shelves (29), is made up of chain wheel (30), left and right silk shelves (31), packing ring (32).Adjustment sheet (33) is used for regulating the gap of two row's balls, and side joint outer casing seat (34) in the chain wheel drives rear wheel by jack (35) and rotates.The backward control mechanism is made up of very heavy, shifting block (36), fuse (37), snap ring (38) and variable force spring (39).Shifting block is enclosed within on the very heavy axle, can push aside very heavy.The variable force spring housing is on the rear axle shelves, and when rear wheel just changes, and the friction drag between the rear axle shelves is very little.When wheel reversing, friction drag increases doubly a lot, so snap ring is obstructed, stirs shifting block, opens very heavyly, and sprocket wheel and rear wheel are thrown off, and carries out the bicycle unobstructive function of retrodicting.Very heavy spring (40) is used for recovering very heavy position in the process of normally riding.Backward is looked anticlockwise direction for A among the figure.
Bicycle with rocker in driving mechanism having function of self-adaptive speed variation of the present invention after manufacturing experimently into sample car, is done the examination of 20 kilometers comparative and is ridden, and when riding trippingly with mid ranger, common light roadster must catch up with strength just and can catch up with, and as seen this vehicle brisk labour-saving effect of riding is tangible.When going up a slope, as long as in advance handle is placed " reduction of speed " shelves, transmission system can be realized corresponding reduction of speed by gradient size automatically.Behind slope top, handle can be placed on and return middle-gradely automatically, then transmission system can be got back to mid ranger automatically, subsequently handle is put into the locking shelves, can fix on the middling speed position.
Ride interpretation of result according to examination, this kind vehicle the most comfortable labour-saving speed is mid ranger.And when going up a slope, the bicyclist wishes not interrupt to realize adaptive rate most with scrunching.Therefore, the key function of this device is two kinds of functions in self adaptation reduction of speed and automatic the returning.
Claims (2)
1, a kind of bicycle with rocker in driving mechanism having function of self-adaptive speed variation, on the vehicle frame axis of this bicycle, left and right sides crank (2) is installed, rocking bar (3) connects firmly with crank at a certain angle, rocking bar is originally as a transmission system, the steel rope (4) of drawing by the lower end, carry out the speed change manipulation by the bar handle (5) that is installed on the handlebar, position on slide block (7) rocking bar of control chain (6) end is to realize speed change, be installed on the rear axle about two flywheels (8) and chain link, chain gusset piece (16) is arranged between chain and the slide block, a left side, connect steel cable (9) between right two sections chains, steel rope is walked around the axis front lower place, the reverse wheel (10) that is installed on the vehicle frame is realized commutation, combine by each part mentioned above and to be transmission device, it is characterized in that described speed-changing mechanism is an adaptive rate mechanism, wherein variable speed control mechanism comprises pull bar (15), raising speed tooth plate (17), reduction of speed tooth plate (18) is formed, the profile of tooth of tooth plate is a serration, groove is arranged on the tooth plate, sleeve minor axis (19) on the pull bar is embedded in the groove, when spurring about pull bar, the sleeve minor axis horizontally slips in groove, makes two tooth plates alternately release or take in simultaneously, stage clip (20) is installed between pull bar and the spring limiting board (21), guarantee the backhaul action of pull bar, two pilot sleeves (22) are used for the motion guide of tooth plate is guaranteed that tooth plate slides up and down; Adaptive rate mechanism wherein is by slide bar (23), stage clip (24) and stop collar (25) are formed, slide block set is on slide bar, two stage clips also are enclosed within on the slide bar, the centre separates with stop collar, pilot sleeve (26) is used for to stop collar guiding and spacing, and reed (27) and backing plate (28) are used for pushing down slide block; Described flywheel (8) but be the backward flywheel, form by sprocket wheel and backward control mechanism, sprocket wheel wherein is by chain wheel (30), about silk shelves (31), packing ring (32), adjustment sheet (33) and rear axle shelves (29) are formed, chain wheel by ball bearing on the rear axle shelves, side joint outer casing seat (34) in it drives rear wheel by very heavy (35) and rotates; Backward control mechanism wherein is by outer casing seat (34), very heavy (35), shifting block (36), fuse (37), snap ring (38) and variable force spring (39) are formed, when rear wheel reverses, and the friction drag variable force between variable force spring and the rotary-inversion axis shelves, by shifting block, open very heavyly, sprocket wheel and rear wheel are thrown off; In the junction of steel rope (9) and chain one telescopic (11) with Telescopic is arranged, there are stage clip (12) and garden slide block (13) to form in this telescopic shaft, in order to adapt to the variation of speed change rear chain length, below flywheel, one chain cover (14) is arranged, guarantee that chain is unlikely to come off.
2, a kind of bicycle as claimed in claim 1 is characterized in that crank, and rocking bar and the flywheel installation site on vehicle frame and the physical dimension of spare part through body mechanics's test and Optimal design and calculation gained data are:
(1) crank length L
1=280～300 millimeters
(2) angle Φ=140 of rocking bar and crank °～150 °
(3) crank center position O
2To the O of rear shaft center
3Relative position coordinates be X
0=320～380 millimeters, y
0=50～80 millimeters.
(4) ram travel distance: maximum L
2=210～230 millimeters.
Minimum L
2'=120～140 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88102229 CN1010293B (en) | 1988-04-30 | 1988-04-30 | Bicycle with rocker in driving mechanism having function of self-adaptive speed variation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88102229 CN1010293B (en) | 1988-04-30 | 1988-04-30 | Bicycle with rocker in driving mechanism having function of self-adaptive speed variation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1037114A CN1037114A (en) | 1989-11-15 |
| CN1010293B true CN1010293B (en) | 1990-11-07 |
Family
ID=4832066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88102229 Expired CN1010293B (en) | 1988-04-30 | 1988-04-30 | Bicycle with rocker in driving mechanism having function of self-adaptive speed variation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1010293B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2628409Y (en) * | 2003-04-25 | 2004-07-28 | 唐立 | Driving lever fan rotating driving bicycle |
| CN1308788C (en) * | 2004-03-16 | 2007-04-04 | 奇鋐科技股份有限公司 | Externally mounted heat abstractor |
| US8162337B2 (en) * | 2009-05-19 | 2012-04-24 | Pt Motion Works, Inc. | Adjustable crank arms for elliptical bike and method of use |
| CN102069882A (en) * | 2010-12-28 | 2011-05-25 | 上海高智机器人新技术合作公司 | Bicycle wheel driving mechanism capable of being treaded up and down |
| CN110341869A (en) * | 2019-07-29 | 2019-10-18 | 蔡创枝 | Variable-ratio double-driving bicycle |
-
1988
- 1988-04-30 CN CN 88102229 patent/CN1010293B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1037114A (en) | 1989-11-15 |
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