CN1597437A - Foot controlled speed changing device for bicycle - Google Patents
Foot controlled speed changing device for bicycle Download PDFInfo
- Publication number
- CN1597437A CN1597437A CN 200410041504 CN200410041504A CN1597437A CN 1597437 A CN1597437 A CN 1597437A CN 200410041504 CN200410041504 CN 200410041504 CN 200410041504 A CN200410041504 A CN 200410041504A CN 1597437 A CN1597437 A CN 1597437A
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- Prior art keywords
- gear
- speed change
- sprocket wheel
- wheel axis
- bicycle
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Abstract
A foot-controlled gear of bicycle is coaxially installed on the chain wheel axle. It consists of a quick gear, a slow gear, and a switching sleeve. The quick gear and slow gear is equipped with inner spline. The chain wheel is engaged with the quick gear at end surfaces. A servo-gear is installed below the chain wheel to engaged with the quick gear and the slow gear. An energy-storing spring and a gear-linking bar are used for the mechanism to change speed by pedaling in an opposite direction of rotation. The gear omits a gear cable, works reliably, changes speed easily, and is installed simply.
Description
Technical field
The present invention relates to a kind of derailleur, definite a kind of bicycle foot control transmission system of saying so.
Background technology
Existing derailleur majority changes by the diameter of adjusting drive sprocket (axis) and driven sprocket (rear wheel) with chain gear, reaches the purpose that changes transmission speed ratio.The chain-driving transmission system of current trend has following defective: the speed change speed ratio can not change excessive, though the transmission system that has is ten multi-change speed gears nearly, but must excessively could realize speed change step by step by multi-chain gear wheel from Fast transforms to the most at a slow speed, it is little that speed change is switched speed ratio; Chain, sprocket wheel frequently switch in speed-change process, occur the fault that chain breaks away from sprocket wheel easily; It is M/C that speed change is switched, and needs to install annexes such as speed-change cable, and it is convenient inadequately to manipulate.
Summary of the invention
The present invention is for improving existing derailleur structure, overcome the defective of prior art, a kind of chain transmission mode and sprocket shaft distance that does not change existing bicycle is provided, do not need annexes such as transposition of chain sprocket speed change and installation speed change manipulating pulling cable, the speed change speed ratio is big, speed change is switched fast, simple installation, a kind of bicycle foot control transmission system of processing ease.
Technical solution of the present invention is: described bicycle foot control transmission system comprises it is characterized in that the driving chain sprocket wheel and the sprocket wheel axis of bicycle:
A. described sprocket wheel axis is provided with axial bore and radially connects elongated slot, the sprocket wheel axis is coaxially installed with soon, two groups of gears and speed change sleeve at a slow speed, hurry up, two groups of gears are provided with the internal diameter spline tooth at a slow speed, chain sprocket is connected with the end face of quick gear, described speed change sleeve cylindrical has ratchet against revolving stop motion mechanism, and interior circle has the height ring-type of axial symmetry domatic;
B. the driven gear of coaxial conjuncted structure is equipped with in described sprocket wheel axis below, its flank of tooth and low-gear engagement, and driven gear is provided with coaxial step gear, its flank of tooth and quick gear mesh;
Be provided with energy stroage spring and speed change mobile link in the axial bore of c. described sprocket wheel axis, speed change mobile link one end be equipped with longitudinal key and with the energy stroage spring adjacency, the other end is provided with a connection rod of gear shifting cross bar perpendicular to speed change mobile link axis, and its two ends ride over the interior circular shaft of speed change sleeve on symmetrical height ring-type is domatic.
Sprocket wheel axis axial bore of the present invention and radially connect the active tunnel that elongated slot is the speed change mobile link can drive the axial left and right displacement of longitudinal key, inserts two groups of bore spline tooths of fast, slow speed change respectively and is engaged with, and carries out speed change and switches.When variable speed operation, need only the contrary sprocket wheel axis that revolves, the speed change sleeve is revolved stop motion mechanism stop by ratchet is contrary, do to move with speed change mobile link, connection rod of gear shifting cross bar in sprocket wheel axis and the axle endoporus relative to angle of rotation, the two ends of connection rod of gear shifting cross bar are pushed up to domatic high point by the domatic inclined-plane of ring-type thrust, promoting connection rod of gear shifting cross bar and speed change mobile link and longitudinal key moves to left, with quick gear mesh and compressed energy-storage spring, sprocket wheel axis, quick gear and the chain sprocket that links to each other are rotated synchronously; As the contrary sprocket wheel axis that revolves once more, the speed change sleeve once more with sprocket wheel axis and axial bore in the speed change mobile link, the connection rod of gear shifting cross bar is done to move relative to angle of rotation, the connection rod of gear shifting cross bar is pushed up the connection rod of gear shifting cross bar to domatic low spot by the energy stroage spring application force, speed change mobile link and longitudinal key are pushed displacement to the right and low-gear engagement, low-gear, rotation synchronously of sprocket wheel axis and driven gear engagement, the coaxial step gear teeth face of driven gear drives chain sprocket with quick gear mesh, the rotation of chain sprocket and quick gear of institute's bonded assembly and axis is asynchronous in the same way, increase the torsion of chain sprocket by the deceleration of driven gear, reached speed changing effect.Wherein circular shaft is domatic to symmetrical height ring-type in the speed change sleeve, and adjacent angle of rotation is about 45 degree between its high low side.Hurry up, two groups of variable gears and driven gear are with the transmission of constant-mesh mode at a slow speed, the speed-change and gearshift engagement takes the internal diameter spline tooth to insert longitudinal key and sprocket wheel axis ingear type of drive.
Accompanying drawing of the present invention be applied to big wheel bicycle fast to the transmission system structural representation of speed change at a slow speed, after its speed change, axis revolves and turns around, the rotation of drive sprocket is less than a circle.As a further improvement on the present invention, apply the present invention to the speed change of steamboat, extra small wheel bicycle, promptly at a slow speed to quick speed change, only needing outside dimension with the fast gear at a slow speed of technical solution of the present invention to exchange and oppositely install driven gear gets final product, after its speed change, axis revolves and turns around, and the rotation of chain sprocket is greater than a circle.According to above technical scheme, structurally change slightly, can also realize fast, in, slow three fast speed changes.
The invention has the beneficial effects as follows: the 1. contrary speed change of revolving of foot control operation was not only easy but also saved manually operated speed-change cable annex; 2. variable gear external tooth constant-mesh mode transmission, the inner spline gear engaged transmission, reliable operation can not produce speed change and fall chain; 3. the speed change speed ratio is big, can settle at one go to carry out switching to the speed change of dead slow the most at a high speed; 4. simple installation does not change the chain-driving mode and the installation shaft distance of ordinary bicycle, only changes the middle axle construction of ordinary bicycle; 5. to exchange comformability strong for speed change, only needs to adjust the external diameter of two pairs of variable gears, this device both can be applied to big wheel bicycle fast to speed change (upward slope or load-carrying) at a slow speed, can be applied to again small-wheel bicycle at a slow speed to quick speed change etc.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is a scheme of installation of the present invention,
Fig. 2 is an overall structure scheme drawing of the present invention, and the right side is a left view of the present invention among the figure,
Fig. 3 is that speed change of the present invention is switched the axial moving device scheme drawing, and the below is that the interior circular shaft of speed change sleeve is to the domatic planar development scheme drawing of symmetrical height ring-type among the figure.
The parts name of mark digital number is among the figure: (1) sprocket wheel axis, (2) left end ball back-up ring, (3) sprocket wheel, (4) sprocket wheel backing plate, (5) left end ball outer ring, the quick gear of (6) left end, (7) ball inner ring, (8) right-hand member low-gear, (9) middle-end ball back-up ring, (10) jam nut, (11) connection rod of gear shifting cross bar, (12) speed change sleeve, (13) right-hand member ball outer ring, (14) fixed support, (15) jam nut, (16) right-hand member ball back-up ring, (17) connection rod of gear shifting cross bar check screw, (18) ratchet stop top board, (19) speed change mobile link, (20) driven gear bearing pin, (21) driven gear, (22) driven gear fixed support, (23) longitudinal key, (24) energy stroage spring, (25) ride crank, (26) circular shaft is domatic to symmetrical height ring-type in the ratchet stop gear ring, (27) speed change sleeve.
The specific embodiment
Referring to accompanying drawing 2, accompanying drawing 3, sprocket wheel axis 1 is the hollow shaft that axial bore is arranged, and the middle part has one radially to be used to the elongate slot that leads to, is provided with longitudinal key 23 in the groove, longitudinal key 23 exposes the outer two ends of groove and is stuck in the internal diameter spline tooth of the quick gear 6 of left end, drives the quick gear 6 of left end and does rotation synchronously; Gear 6 end faces are connected with sprocket wheel 3 fast, gear 6,8 common driven gears 21 with coaxial conjuncted structure mesh, sprocket wheel axis 1 is equipped with ball back-up ring 2,9 and jam nut 10, gear 6,8 is positioned on the sprocket wheel axis 1, the end face of the quick gear 6 of left end has bolted to live sprocket wheel 3 and sprocket wheel backing plate 4, drives sprocket wheel 3 rotations, thereby drives chain, drive wheels rotation, above process are the operative condition of bicycle when normally riding.Need speed change in the cycling process, under normally overweight or the situation that the upward slope physical demands of riding is excessive, by fast to speed change at a slow speed in load.The transmittance process of the rotational force that speed change is later is, the rotary pedals crank 25 by bike, drive 1 rotation of sprocket wheel axis, longitudinal key 23 is stuck in the internal diameter spline tooth of right-hand member low-gear 8, drive right-hand member low-gear 8 and do rotation synchronously, the external diameter of right-hand member low-gear 8 is less than the quick gear 6 of left end, lever principle makes right-hand member low-gear 8 produce bigger rotary torsion, right-hand member low-gear 8 drives driven gear 21 rotations, the driven gear 21 coaxial quick gears 6 of step gear driven left end rotate, the rotative speed of the quick gear 6 of left end slows down, moment of rotation increases, the quick gear of left end 6 drives sprocket wheels 3 and by chain the rotary torsion that increases is delivered to wheel, and by the speed change increase torsion that underspeeds, the physical demands that manpower is ridden reduces.The gear transmission of right-hand member low-gear 8 and driven gear 21, driven gear 21 and the quick gear 6 of left end wherein, adopt the constant mesh gear type of drive, the speed change switching moves axially by longitudinal key 23, rotates synchronously with the internal diameter spline tooth engagement of the quick gear 6 of left end, right-hand member low-gear 8 respectively.
Referring to accompanying drawing 3, shown in the accompanying drawing 3 is the process that speed change is switched longitudinal key 23 longitudinal travels, speed change sleeve 12 is mounted in the part of rotatable sleeve type on the right-hand member ball back-up ring 16, right-hand member ball back-up ring 16 screw threads edge is placed in sprocket wheel axis 1, its cylindrical and right-hand member ball outer ring 13, fixed support 14 connects with ball, speed change sleeve 12 when riding condition rotates and sprocket wheel axis 1 synchronous.If when riding, need speed change, step on foot-operated retrograde rotation axis 1 about 45 degree, be fixed on ratchet stop top board 18 on this device pedestal and withstand ratchet stop gear ring 26 and 1 retrograde rotation of sprocket wheel axis on speed change sleeve 12 outer rings, right-hand member at sprocket wheel axis 1 also is provided with the elongate slot that radially connects, be interspersed with connection rod of gear shifting cross bar 11 in the groove, this connecting rod cross bar is a buttress shaft shape elastic wire spare, its two ends ride on the axial symmetrical height ring-type domatic 27 of circle in the speed change sleeve 12, two recesses of domatic upward axially symmetrical high point and low spot, can keep somewhere connection rod of gear shifting cross bar 11, the interval of adjacent height radially angle of rotation is about 45 degree.Because variable speed operation produces speed change sleeve 12 and sprocket wheel axis 1, about 45 degree in right-hand member ball back-up ring 16 retrograde rotation angles, the slope application force of speed change sleeve 12 height ring-type domatic 27 by interior circle when contrary revolving, the connection rod of gear shifting cross bar 11 that rides on the domatic low spot recess, be pushed into the domatic high some recess of, connection rod of gear shifting cross bar 11 is produced axially to move to left, connection rod of gear shifting cross bar 11 moves axially distance and equals the domatic height axially spaced-apart distance of circle in the speed change sleeve 12, connection rod of gear shifting cross bar 11 also acts on the speed change mobile link 19 that is positioned in sprocket wheel axis 1 endoporus, speed change mobile link 19 ejection longitudinal keys 23, in the endoporus spline tooth of the quick gear 6 of left end is inserted in left dislocation, sprocket wheel axis 1 and the quick gear 6 of left end are rotated synchronously, and longitudinal key 23 compresses energy stroage spring 24 stored energies that place sprocket wheel axis 1 endoporus left end in the time of left dislocation.If when riding, step on foot-operated crank retrograde rotation sprocket wheel axis 1 about 45 degree once more, speed change sleeve 12 repeats above process, but ride over the connection rod of gear shifting cross bar 11 on the high some recess on the height ring-type domatic 27 round in the speed change sleeve 12, discharged on the domatic 27 low spot recess positions of height ring-type that are pushed into interior circle by the spring capacity of energy stroage spring 24, make connection rod of gear shifting cross bar 11 displacement to the right, speed change mobile link 19, longitudinal key 23 is displacement to the right synchronously, insert in the right-hand member low-gear 8 endoporus spline tooths, sprocket wheel axis 1 and right-hand member low-gear 8 are rotated synchronously, and right-hand member low-gear 8 drives to the transmission that the quick gear 6 of left end is realized the speed change rotational force by driven gear 21.If step on foot-operated retrograde rotation sprocket wheel axis 1 about 45 degree once more, the speed speed change is switched the above process that repeats.
Other part and effect at above diagram not specified (NS), left end ball outer ring 5 is to be connected with quick gear 6 balls of left end, left end ball back-up ring 2 screw threads edge is placed in sprocket wheel axis 1, ball connects the quick gear 6 of left end, ball inner ring 7 is fixed in the right-hand member of sprocket wheel axis 1 and the quick gear 6 of left end, the left end ball of right-hand member low-gear 8 connects, middle-end ball back-up ring 9 is that the screw thread edge is placed in sprocket wheel axis 1, ball connects the ball back-up ring of right-hand member low-gear 8, jam nut 10 effects are locking middle-end ball back-up rings 9, right-hand member ball back-up ring 16 screw threads edge is placed in sprocket wheel axis 1, ball connects right-hand member ball outer ring 13, jam nut 15 effects are locking right-hand member ball back-up rings 16, and fixed support 14 is to connect left end ball outer ring 5, right-hand member ball outer ring 13, driven gear fixed support 22, the base adapter plate of ratchet stop top board 18.
Claims (5)
1, the present invention relates to a kind of bicycle foot control transmission system, the chain sprocket (3) and the sprocket wheel axis (1) that comprise bicycle, it is characterized in that: described sprocket wheel axis (1) is provided with axial bore and radially connects elongated slot, be coaxially installed with quick gear (6), low-gear (8) and speed change sleeve (12), gear (6), low-gear (8) are provided with the internal diameter spline tooth fast, chain sprocket (3) is connected with the end face of quick gear (6), described speed change sleeve (12) cylindrical has ratchet against revolving stop motion mechanism, and interior circle has the height ring-type of axial symmetry domatic (27); The driven gear (21) of coaxial conjuncted structure is equipped with in sprocket wheel axis (1) below, its flank of tooth and low-gear (8) engagement, and driven gear (21) is provided with coaxial step gear, its flank of tooth and gear (6) engagement fast; Be provided with energy stroage spring (24) and speed change mobile link (19) in the axial bore of described sprocket wheel axis (1), speed change mobile link (19) one ends be equipped with longitudinal key (23) and with energy stroage spring (24) adjacency, the other end is provided with a connection rod of gear shifting cross bar (11) perpendicular to speed change mobile link (19) axis, and its two ends ride over the interior circular shaft of speed change sleeve (12) on symmetrical height ring-type domatic (27).
2, a kind of bicycle foot control transmission system according to claim 1, it is characterized in that circle is provided with axial two ends symmetry height ring-type domatic (27) in the speed change sleeve (12), the domatic high and low end of this ring-type is a concave structure, and the high low side adjacent radial anglec of rotation is about 45 degree.
3, a kind of bicycle foot control transmission system according to claim 1 and 2 is characterized in that the ratchet on speed change sleeve (12) cylindrical can be a ratchet stop gear ring (26) against revolving stop motion mechanism.
4, a kind of bicycle foot control transmission system according to claim 1 is characterized in that variable gear assembly (6), (8) and driven gear (21) employing constant mesh gear type of drive.
5, a kind of bicycle foot control transmission system according to claim 1 is characterized in that variable gear assembly (6), (8) are to adopt the mode and sprocket wheel axis (1) engagement of longitudinal key (23) being moved the internal diameter spline tooth that inserts variable gear (6), (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410041504 CN1282585C (en) | 2004-07-22 | 2004-07-22 | Foot controlled speed changing device for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410041504 CN1282585C (en) | 2004-07-22 | 2004-07-22 | Foot controlled speed changing device for bicycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1597437A true CN1597437A (en) | 2005-03-23 |
| CN1282585C CN1282585C (en) | 2006-11-01 |
Family
ID=34665105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410041504 Expired - Fee Related CN1282585C (en) | 2004-07-22 | 2004-07-22 | Foot controlled speed changing device for bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1282585C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355623C (en) * | 2005-07-22 | 2007-12-19 | 罗明端 | Foot operated speed changer of bicycle |
| CN103419897A (en) * | 2012-05-21 | 2013-12-04 | 日驰企业股份有限公司 | Reversal-trodden multi-segment gear-shifting inner transmission |
| CN108483202A (en) * | 2018-03-28 | 2018-09-04 | 怡达快速电梯有限公司 | A kind of elevator car bottom folds toeguard and its method for folding |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI579194B (en) * | 2012-05-18 | 2017-04-21 | 日馳企業股份有限公司 | Drive transmission capable of multi-speed gear-shifting by reverse rotation |
| DE202018106135U1 (en) * | 2017-05-30 | 2018-11-08 | Shimano Inc. | Rear bicycle sprocket arrangement and bicycle powertrain |
-
2004
- 2004-07-22 CN CN 200410041504 patent/CN1282585C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355623C (en) * | 2005-07-22 | 2007-12-19 | 罗明端 | Foot operated speed changer of bicycle |
| CN103419897A (en) * | 2012-05-21 | 2013-12-04 | 日驰企业股份有限公司 | Reversal-trodden multi-segment gear-shifting inner transmission |
| CN103419897B (en) * | 2012-05-21 | 2016-02-24 | 日驰企业股份有限公司 | Step on multistage shift internal speed changer |
| CN108483202A (en) * | 2018-03-28 | 2018-09-04 | 怡达快速电梯有限公司 | A kind of elevator car bottom folds toeguard and its method for folding |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1282585C (en) | 2006-11-01 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Luo Mingduan Document name: Notification to Pay the Fees |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061101 Termination date: 20110722 |