CN2244520Y - Speed variator for planetary chain gear of bicycle - Google Patents
Speed variator for planetary chain gear of bicycle Download PDFInfo
- Publication number
- CN2244520Y CN2244520Y CN 95220270 CN95220270U CN2244520Y CN 2244520 Y CN2244520 Y CN 2244520Y CN 95220270 CN95220270 CN 95220270 CN 95220270 U CN95220270 U CN 95220270U CN 2244520 Y CN2244520 Y CN 2244520Y
- Authority
- CN
- China
- Prior art keywords
- sprocket
- wheel
- chainwheel
- teeth
- bigeminy
- 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 - Fee Related
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Abstract
The utility model relates to a speed changer with a planetary chainwheel for a bicycle. The utility model comprises a pedal crank and a centre shaft which is integrally connected with the pedal crank by a pin. The utility model is characterized in that the utility model is provided with a tooth casing of a chainwheel, a dual chainwheel, and a chainwheel bearing of the dual chainwheel, wherein, the tooth casing of the chainwheel is integrated with a crank, and the inner ring of the chainwheel bearing of the dual chainwheel is integrated with a five-way joint. The inner ring of the chainwheel bearing of the dual chainwheel is provided with an eccentric centre shaft hole. An internal chainwheel of the dual chainwheel is a chainwheel with a minor radius; the wheel teeth of the internal chainwheel, which are positioned at the long diameter position of the chainwheel bearing can be just engaged with chain holes on the tooth casing of the chainwheel. An external chainwheel of the dual chainwheel is a chainwheel with a large radius, and is engaged with a driving chain of a flywheel.
Description
The utility model belongs to bicycle speed-varying unit, particularly is located at the planetary gear derailleur at wheel disc place.
Be located at the single structure that adds the big trochal disc radius, increases the number of teeth of the general employing of change-speed box at wheel disc place.Because of being subjected to the restriction of structure space, it is limited to add large speed ratio.And the length of foot-operated crank is constant, pedals cycling start and comes gruelling.
The purpose of this utility model is to propose a kind of bicyclic planet chain wheel speed unit technical scheme of being located at the wheel disc place, in the hope of reaching laborsaving acceleration effect.
Content of the present utility model is a kind of bicyclic planet chain wheel speed unit, comprise foot-operated crank, with the axis of foot-operated crank one pin joint, also has sprocket shaft bearing with the bigeminy sprocket wheel of sprocket shell, bigeminy sprocket wheel, inner ring and the five-way one of bent axle one, the sprocket shaft bearing inner ring of bigeminy sprocket wheel is provided with the accentric central axis hole, and inner ring connects with the five-way one.The inner sprocket of bigeminy sprocket wheel is the minor radius sprocket wheel, it is positioned at the chain hole on the proper engageable sprocket shell of the gear teeth at sprocket shaft bearing major diameter place, the outer sprocket wheel of bigeminy sprocket wheel be the long radius sprocket wheel, with the engagement of flywheel chain drive-belt.The major radius half-turn of bearing inner ring is positioned at axis the place ahead.The major radius of bearing inner ring and horizon angle can be 0 °～+ 40 °.The preferred angle of the major radius of bearing inner ring and horizon angle is+10 °.13 chain links can be set on the sprocket shell, and the minor sprocket of cooresponding bigeminy sprocket wheel is provided with 19 teeth, and hinge wheel is provided with 36 teeth.13 chain links are set on the sprocket shell, and the minor sprocket of cooresponding bigeminy sprocket wheel is provided with 19 teeth, and hinge wheel is provided with 42 teeth.13 chain links are set on the sprocket shell, and the minor sprocket of cooresponding bigeminy sprocket wheel is provided with 19 teeth, and hinge wheel is provided with 48 teeth.The hinge wheel of bigeminy sprocket wheel can be a multiple sprocket, has two diameters and the number of teeth wheel disc inequality of one at least.
Characteristics of the present utility model are to adopt the secondary planetary gear transmission device, have increased the number of teeth of wheel disc work done.The extended moment of foot-operated crank of the eccentric configuration of sprocket shaft bearing inner ring.
Embodiment of the present utility model is as shown in drawings:
The scheme drawing of Fig. 1, the utility model transmission configuration;
Fig. 2, sprocket shell structure figure, wherein 2.1 is that the master looks partial cutaway schematic, the 2.2nd, the side-looking generalized section;
Fig. 3, bigeminy sprocket wheel and sprocket shaft bearing organigram.
Label among the figure is represented:
1, crank, 2, the sprocket shell, 3, the bigeminy sprocket wheel, 4, chain link, 5, the sprocket shaft bearing inner ring, 6, axis, 7, bottom bracket cup, 8, five-way, 9, the inner ring locating bush, 10, interior (little) sprocket wheel, 11, outer (greatly) sprocket wheel.
Accompanying drawing is specified the utility model in conjunction with the embodiments:
The utility model change-speed box only increased sprocket shell 2, bigeminy sprocket wheel 3 and with axis 6 accentric sprocket shaft bearing inner rings 5, sprocket shell 2 connects with crank 1 one, inner ring 5 is a lot of with the mode that five-way 8 one connect, this example is to connect with five-way 8 one by inner ring locating bush 9, can establish top wire hole on 9 walls at cover, will overlap 9 and the connection of five-way 8 one with jackscrew; Also can inner ring 5 be connected with bottom bracket cup 7 outside one, realize inner ring 5 and five-way 8 one, for example can between inner ring 5 outsides and sprocket shell 2, pressure bearing be set, cover 9 and bottom bracket cup 7 flush fits are become one with other method; Can also establish top wire hole in inner ring 5 side direction, itself and bottom bracket cup 7 be combined as a whole with jackscrew.Inner ring 5 accentric major diameters have increased the moment of foot-operated crank 1.The half-turn of inner ring 5 major diameters places the preceding half cycle of bigeminy sprocket wheel 3, i.e. the place ahead of axis, and to place the front upper place to be advisable; Position among Fig. 1 is for the extended moment of crank 1 of inner ring 5 accentric major radius is described in the second half of bigeminy sprocket wheel 3.The horizon angle of the major radius of inner ring 5 and bigeminy sprocket wheel 3 can be 0 °～+ 40 °, with about+10 ° be good, firmly meet body mechanics's requirement during foot-operated crank 1, scrunch laborsaving.The gear teeth of the inner sprocket 10 of bigeminy sprocket wheel 3 and the chain link 4 on the sprocket shell 2 are in the engagement of inner ring 5 eccentric major radius places, and the gear teeth on the outer sprocket wheel 11 and chain engages drag the flywheel that drives trailing wheel.The gear teeth that the number of teeth three's of the perforation number of the chain link 4 that is provided with on the sprocket shell 2, the number of teeth of inner sprocket 10 and outer sprocket wheel 11 ratio has determined foot-operated crank 1 to rotate to drive outer sprocket wheel 11 week and chain engages, the number of promptly exporting.13 chain links for example can be set on the sprocket shell 2, and the inner sprocket 10 of cooresponding bigeminy sprocket wheel 3 is provided with 19 teeth, and outer sprocket wheel 11 is provided with 36 teeth, exportable 49.26 teeth.13 chain links are set on the sprocket shell 2, and the inner sprocket 10 of cooresponding bigeminy sprocket wheel 3 is provided with 19 teeth, and outer sprocket wheel 11 is provided with 42 teeth, exportable 55.3 teeth.13 chain links are set on the sprocket shell 2, and the inner sprocket 10 of cooresponding bigeminy sprocket wheel 3 is provided with 19 teeth, and outer sprocket wheel 11 is provided with 48 teeth, exportable 65.6 teeth.The outer sprocket wheel 11 of bigeminy sprocket wheel 3 can be a multiple sprocket, and promptly one has two diameters and the gear teeth outer sprocket wheel 11 inequality at least, and the similar at present common wheel disc of its shape is the compound wheel disc of change-speed box outward, so that adopt existing outer transmission technology, realizes multi-change speed.Axis 6 passes five-way 8, by bottom bracket cup 7 supports wherein.Foot-operated crank 1 connects by the pin one with axis 6.The design's change-speed box can be contained in the right side of axis 6.
The working process of the utility model change-speed box is foot-operated crank 1 drive sprocket shell 2, inner sprocket 10, outer sprocket wheel 11 and driving chain.
Claims (8)
1, a kind of bicyclic planet chain wheel speed unit, comprise foot-operated crank, with the axis of foot-operated crank one pin joint, it is characterized in that having sprocket shaft bearing with the bigeminy sprocket wheel of sprocket shell, bigeminy sprocket wheel, inner ring and the five-way one of crank one, the sprocket shaft bearing inner ring of bigeminy sprocket wheel is provided with the accentric central axis hole, the inner sprocket of bigeminy sprocket wheel is the minor radius sprocket wheel, it is positioned at the chain hole on the proper engageable sprocket shell of the gear teeth at sprocket shaft bearing major diameter place, the outer sprocket wheel of bigeminy sprocket wheel be the long radius sprocket wheel, with the engagement of flywheel chain drive-belt.
2, change-speed box as claimed in claim 1 is characterized in that the major radius half-turn of bearing inner ring is positioned at axis the place ahead.
3, change-speed box as claimed in claim 2 is characterized in that the major radius of bearing inner ring and horizon angle are 0 °～+ 40 °.
4, change-speed box as claimed in claim 2, it is characterized in that the major radius of bearing inner ring and horizon angle be+10 °
5, as the described change-speed box of claim 1～4, it is characterized in that 13 chain links are set on the sprocket shell, the minor sprocket of cooresponding bigeminy sprocket wheel is provided with 19 teeth, and hinge wheel is provided with 36 teeth.
6, as the described change-speed box of claim 1～4, it is characterized in that 13 chain links are set on the sprocket shell, the minor sprocket of cooresponding bigeminy sprocket wheel is provided with 19 teeth, and hinge wheel is provided with 42 teeth.
7, as the described change-speed box of claim 1～4, it is characterized in that 13 chain links are set on the sprocket shell, the minor sprocket of cooresponding bigeminy sprocket wheel is provided with 19 teeth, and hinge wheel is provided with 48 teeth.
8, as the described change-speed box of claim 1～4, the hinge wheel that it is characterized in that the bigeminy sprocket wheel is a multiple sprocket, has two diameters and the number of teeth wheel disc inequality of one at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95220270 CN2244520Y (en) | 1995-08-30 | 1995-08-30 | Speed variator for planetary chain gear of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95220270 CN2244520Y (en) | 1995-08-30 | 1995-08-30 | Speed variator for planetary chain gear of bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2244520Y true CN2244520Y (en) | 1997-01-08 |
Family
ID=33868219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95220270 Expired - Fee Related CN2244520Y (en) | 1995-08-30 | 1995-08-30 | Speed variator for planetary chain gear of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2244520Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008101382A1 (en) * | 2007-02-16 | 2008-08-28 | Shengwen Guo | A central shaft acceleration gearing |
-
1995
- 1995-08-30 CN CN 95220270 patent/CN2244520Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008101382A1 (en) * | 2007-02-16 | 2008-08-28 | Shengwen Guo | A central shaft acceleration gearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |