CN2294918Y - Four-speed speed variator of bicycle - Google Patents
Four-speed speed variator of bicycle Download PDFInfo
- Publication number
- CN2294918Y CN2294918Y CN 97209585 CN97209585U CN2294918Y CN 2294918 Y CN2294918 Y CN 2294918Y CN 97209585 CN97209585 CN 97209585 CN 97209585 U CN97209585 U CN 97209585U CN 2294918 Y CN2294918 Y CN 2294918Y
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- CN
- China
- Prior art keywords
- speed
- gear
- bicycle
- ratchet
- controll block
- 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 an improvement on the prior art, which is a planetary drive mechanism which is composed of a central wheel, a planetary wheel, a planetary carrier and an internal gear. Detents are used for output at both sides of the mechanism, fully using different positions of two kinds of controlling blocks, and thus the planetary mechanism generates different speed output. The utility model has the advantages of reasonable structure, flexible speed change convenient operation, and easy production.
Description
The utility model relates to derailleur, particularly the bicycle four-speed gear box.
In the prior art bicycle speed-varying unit have a variety of, as the sprocket wheel speed change, gear change, various ways such as planetary gear speed-changing, shown in Figure 1 is exactly wherein a kind of.This speed changer structure complexity, the speed change class is few, and right-hand member controll block is come the shift position by the spring force balance, so Shift Gears Problems is lived.
The purpose of this utility model provides a kind of four kinds of shelves speed that have, and speed change is flexible, the simple relatively bicycle four-speed gear box of structure.
The utility model is to realize like this.It mainly is a planetary mechanism of being made up of center gear, pinion carrier, satellite gear, inner gear.Its axis is a hollow shaft.Adorn a shift fork at the right-hand member of hollow shaft, the left part of this shift fork has chute, the shifting block that can stir the rotation of pinion carrier or inner gear slides in this groove, and the right part of this shift fork can be adorned the standard flywheel with imput power, and it is to realize by moving of a controll block that shifting block slides in groove.One or more ratchets that can drive end cap and shell are installed on the right-hand member cylindrical of large internal gear equably, one or more ratchets that can drive end cap and shell are installed equally equably at the left end of planet.Two center gear kinks are at the left end of hollow shaft, one respectively the controll block of clutch two center gears be contained between two center gears.Satellite gear is contained on the pinion carrier with its axle, and the spindle nose of planet wheel spindle stretches out outside the pinion carrier.When two controll blocks were in diverse location, the utility model had four kinds of speed outputs.
With accompanying drawing the utility model is further specified below.
Figure one is the bicycle speed-varying unit scheme drawing of prior art.Figure two is the utility model assembling scheme drawing, and shown position is I shelves shift position.Figure the three, four, the 5th, II, III, IV shelves shift position scheme drawing.Figure six, seven is for being the scheme drawing of criss cross shifting block 10.When figure eight is II speed shelves, the cutaway view at ratchet 11 places.When figure nine is III, IV speed shelves, the cutaway view at ratchet 11 places.
Find out that from figure two at the right-hand member of hollow shaft 1 shift fork 13 is housed, the shifting block 10 that can slide and drive pinion carrier 2 or inner gear 8 is contained in the symmetrical channels of shift fork 13, the slip of shifting block 10 is to realize by clutch cover 18 and moving of controll block 17.The ratchet 11 that can drive end cap 12 and gearbox case 5 is housed on the right-hand member cylindrical of large internal gear 9, and the control stalk 16 that can operate controll block 21 and controll block 17 is loaded in the hollow shaft 1.The left end of pinion carrier 2 is equipped with the ratchet 4 that can drive end cap 3 and gearbox case 5, center gear 23 and 19 equal kinks are on hollow shaft 1, the controll block 21 and the clutch cover 22 that can play clutch action are housed between center gear 23 and 19, and an end of compensating-gear shaft 25 has a spindle nose that stretches out 9.Shifting block 10 is in-line or is criss-cross or quincunx, and its cooresponding part shift fork 13 also should be left symmetrical channels such as a word, cross, plum blossom.Ratchet 4 or 11 can be one or more symmetric arrangement that are.Controll block 21 is sliding block joints with control stalk 16, and spring 20 is housed thereafter.Controll block 17 is to be threaded with control stalk 16, and spring 14 is housed thereafter.The end of control stalk 16 has been equipped with the nut of baffle effect.
When controll block 21 and clutch cover 22 and controll block 17 and clutch cover 18 during in the position shown in the figure two, change-speed box is I speed shelves.---shifting block 10---spindle nose 9---pinion carrier 2-inner gear 8---ratchet 11---right end cap 12---output that its transmission is: shift fork 13 (power input).At this moment, center gear 23 is fixed by clutch cover 22, and center gear 19 is thrown off.This is a kind of planetary transmission of center gear fixed annulus output, and its speed ratio=1/ (1+Za.Zd/Zc, Zb).Because of denominator greater than one, so transmitting ratio forever less than one, this planetary transmission is a speedup.Pinion carrier 2 is gone back driving click 4 simultaneously, its transmitting ratio=1: 1, and this moment, the right was fast, and the left side is slow, so ratchet 4 only only is to slide on end cap 3.
When controll block 21 and clutch cover 22 and controll block 17 and clutch cover 18 during in the position shown in the figure three, change-speed box is II speed shelves.Its transmission is: shift fork 13 (power input), and---shifting block 10---------inner gear 8 is exported the projection 15 in the inner gear 8, its transmitting ratio=1: 1 by ratchet 11---right end cap 12---.At this moment, center gear 23 is fixed by clutch cover 22, and center gear 19 is thrown off.Inner gear 8---satellite gear 7---pinion carrier 2---ratchet 4---output simultaneously.This is a kind of planetary transmission of center gear fixed carrier output, and its transmitting ratio=1+Za.Zd/Zc.Zb, transmitting ratio are forever greater than one, and this planetary transmission is for slowing down.This moment, the right was fast, and the left side is slow, so ratchet 4 only only is to slide on end cap 3.
When controll block 21 and clutch cover 22 and controll block 17 and clutch cover 18 during in the position shown in the figure four, change-speed box is III speed shelves.Make ratchet 11 inoperative (see figure nine) because shifting block 10 enters into the following of ratchet 11 and jack-up ratchet 11 this moment.---shifting block 10------inner gear 8---satellite gear 7---pinion carrier 2---ratchet 4---output of the projection 15 in the inner gear 8 that its transmission only is: shift fork 13 (power input).At this moment, center gear 23 is fixed by clutch cover 22, and center gear 19 is thrown off.This is a kind of planetary transmission of center gear fixed carrier output, and transmitting ratio=1+Za.Zd/Zc.Zb, transmitting ratio are forever greater than one, and this planetary transmission is for slowing down.
When controll block 21 and clutch cover 22 and controll block 17 and clutch cover 18 during in the position shown in the figure five, change-speed box is IV speed shelves.Make ratchet 11 inoperative (see figure nine) because shifting block 10 enters into the following of ratchet 11 and jack-up ratchet 11 this moment.---shifting block 10------inner gear 8---satellite gear 7---pinion carrier 2---ratchet 4---output of the projection 15 in the inner gear 8 that its transmission only is: shift fork 13 (power input).At this moment, center gear 19 is fixed by clutch cover 22, and center gear 23 is thrown off.This is a kind of planetary transmission of center gear fixed carrier output, and its speed ratio=1+Za/Zb, transmitting ratio are forever greater than one, and this planetary transmission is for slowing down.
In sum, speed ratio of the present utility model is respectively:
I shelves speed ratio=1/ (1+Za.Zd/Zc.Zb) II shelves speed ratio=1: 1
III shelves speed ratio=1+Za.Zd/Zc.Zb IV shelves speed ratio=1+Za/Zb
The utlity model has fourth gear speed, rational in infrastructure, speed change is flexible, and is easy to operate, easy to manufacture, has effect preferably.
Claims (4)
1, a kind of bicycle four-speed gear box, the right-hand member of its hollow shaft 1 is equipped with shift fork 13, the shifting block 10 that can slide and drive pinion carrier 2 or inner gear 8 is contained in the symmetrical channels of shift fork 13, the ratchet 11 that can drive end cap 12 and gearbox case 5 is housed on the right-hand member cylindrical of large internal gear 8, and the control stalk 16 that can operate controll block 21 and controll block 17 is loaded in the hollow shaft 1; The left end that it is characterized in that pinion carrier 2 is equipped with the ratchet 4 that can drive end cap 3 and gearbox case 5, center gear 23 and 19 equal kinks are on hollow shaft 1, the controll block 21 and the clutch cover 22 that can play clutch action are housed between center gear 23 and 19, and an end of compensating-gear shaft 25 has a spindle nose that stretches out 9.
2, bicycle four-speed gear box according to claim 1 is characterized in that shifting block 10 is in-line or is criss-cross or quincunx.
3, bicycle four-speed gear box according to claim 1 is characterized in that ratchet 4 or 11 can be one or more.
4, bicycle four-speed gear box according to claim 1 is characterized in that controll block 21 and control stalk 16 are sliding block joints, and spring 20 is housed thereafter; Controll block 17 is to be threaded with control stalk 16, and spring 14 is housed thereafter; The end of control stalk 16 has been equipped with the nut of baffle effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97209585 CN2294918Y (en) | 1997-04-10 | 1997-04-10 | Four-speed speed variator of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97209585 CN2294918Y (en) | 1997-04-10 | 1997-04-10 | Four-speed speed variator of bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2294918Y true CN2294918Y (en) | 1998-10-21 |
Family
ID=33928735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97209585 Expired - Fee Related CN2294918Y (en) | 1997-04-10 | 1997-04-10 | Four-speed speed variator of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2294918Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388660A (en) * | 2012-05-11 | 2013-11-13 | 张家港市九鼎机械有限公司 | Mechanical speed change system |
-
1997
- 1997-04-10 CN CN 97209585 patent/CN2294918Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388660A (en) * | 2012-05-11 | 2013-11-13 | 张家港市九鼎机械有限公司 | Mechanical speed change system |
| CN103388660B (en) * | 2012-05-11 | 2015-12-16 | 张家港市九鼎机械有限公司 | A kind of mechanical variable speed system |
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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 |