CN87214967U - Variable-speed gear of bicycle - Google Patents
Variable-speed gear of bicycle Download PDFInfo
- Publication number
- CN87214967U CN87214967U CN 87214967 CN87214967U CN87214967U CN 87214967 U CN87214967 U CN 87214967U CN 87214967 CN87214967 CN 87214967 CN 87214967 U CN87214967 U CN 87214967U CN 87214967 U CN87214967 U CN 87214967U
- Authority
- CN
- China
- Prior art keywords
- wheel rim
- ratchet
- cover
- speed change
- bicycle
- 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.)
- Withdrawn
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Abstract
A variable-speed gear of bicycle of the utility model replaces the carrier wheel and the bearing cap of the central axis, and is arranged on the central axis. The utility model has two drive ratios (normal speed and quick speed), the conversion of the two drive ratios is realized only by the reversal rotation of the foot pedal crank to a finite angle (90 DEG or 180 DEG) when riding. The utility model has the advantages of compact structure, high reliability and convenient installation and operation.
Description
The utility model belongs to a kind of transmission system of bicycle.
At present, the domestic and international transmission system of using on the bicycle, common have two kinds of patterns: a kind of is the position of conversion chain, and it is meshed with the sprocket wheel of different-diameter, to reach the purpose that changes speed ratio.Another kind is sun and planet gear to be made variable shaft (popular name accelerate axle) be installed on the rear axle of bicycle, realizes changing speed ratio.
The purpose of this utility model provides a kind of sprocket wheel and bearing carrier ring that replaces the bicycle middle shaft place, directly be contained in the axis place, make bicycle when riding, only need to ride crank counter-rotating certain angle (as 90 ° or 180 °), can realize the transmission system of two kinds of transmission speed ratios (Chang Su, quick) conversion.
The utility model partly is made up of erection seat, appliance cover, chain wheel rim, satellite gear, sun wheel rim, speed change cover etc.It is characterized in that chain wheel rim, satellite gear, sun wheel rim, speed change cover are installed between erection seat and the appliance cover.Erection seat replaces the axle sleeve of bicycle middle shaft, is mounted to vehicle frame to become one, and appliance cover links to each other with foot-operated crank, and rotates synchronously with foot-operated crank.
The chain engages of chain wheel rim and bicycle, the external tooth of the internal tooth of chain wheel rim and sun wheel rim all meshes with satellite gear.Being equipped with braking ratchet and location ratchet on the erection seat stretches being equipped with synchronous ratchet and displacement ratchet on the appliance cover between speed change cover and the sun wheel rim and stretches from opposite side between speed change cover and sun wheel rim.
Two kinds of transmission speed ratio functions of the present utility model are to be in diverse location by speed change cover and above-mentioned each ratchet, thus control sun wheel rim in bicycle is advanced or with foot-operated crank rotation synchronously or motionless finishing.
Speed change is overlapped in a tubular form, and its outside face is evenly equipped with the individual protuberance of even number (4 or 2), and these protuberances form even number grooves, these groove depths are shallow alternate, whenever the speed change cover turns an angle (as 90 ° or 180 °), promptly turn over a groove position, the location swap of depth groove is once.
When running at a constant speed, location ratchet on the shallow slot picking-up device seat that speed change puts, the braking ratchet is separated with the internal tooth of sun wheel rim, when foot-operated crank rotates, appliance cover just drives planet wheel spindle, and ratchet rotates thereupon synchronously, owing on the chain wheel rim cycle chain load is arranged, force chain wheel rim, satellite gear, sun wheel rim can only be along with foot-operated crank, appliance cover rotates together synchronously.At this moment, the speed change cover ratchet that is positioned withstands motionlessly, and the displacement ratchet is clockwise with appliance cover, slides on speed change cover surface.
In running at a constant speed,, after only needing to ride crank backward rotation certain angle (90 ° or 180 °), continue to pedal the clockwise just realization of foot-operated crank again as if being transformed to fast running.During foot-operated crank counter-rotating certain angle, make displacement ratchet on the appliance cover promote the speed change cover and turn an angle thereupon, realize the transposition of shallow slot deep trouth, at this moment, the location ratchet on the erection seat slips into deep trouth, the braking ratchet pushed open by elastic force and with sun wheel rim internal gearing.Because the braking ratchet on the erection seat, the location ratchet pins sun wheel rim and speed change cover respectively, makes it can not be clockwise with foot-operated crank.When foot-operated crank drives appliance cover, when planet wheel spindle is clockwise, just forces satellite gear to roll on sun wheel rim surface,, realize fast running so the sprocket wheel astragal moves the cycle chain accelerated movement.At this moment, the displacement ratchet on the appliance cover when ratchet forward rotates with appliance cover synchronously, slides between sun wheel rim, speed change cover.
In the fast running, if will ride crank backward rotation certain angle again, then device is replied and is normal fast state, realizes conversion again.
Derailleur of the present utility model, advantage is: compact conformation, speed change are steadily reliable, and be easy to install.
Be described further below in conjunction with accompanying drawing
Fig. 1 is the utility model structural representation;
Fig. 2 is the structural representation of the utility model along Figure 1A-A section
Fig. 3 is in running at a constant speed, the detent positions figure on the erection seat;
Fig. 4 is in running at a constant speed, the detent positions figure on the appliance cover;
Fig. 5 is in the fast running, the detent positions figure on the erection seat;
Fig. 6 is in the fast running, the detent positions figure on the appliance cover.
Wherein: the 1-erection seat; The 2-appliance cover; 3-chain wheel rim; The 4-satellite gear; The 5-planet wheel spindle; 6-sun wheel rim; The 7-bicycle middle shaft; 8-bicycle pedals crank; 9-speed change cover; The 10-ball; The synchronous ratchet of 11-; 12-displacement ratchet; 13-brakes ratchet; 14-locatees ratchet.
See figures.1.and.2, in the process of processing unit (plant) seat 1 and appliance cover 2, with slot rolling and planet wheel spindle 5 axis hole on appliance cover 2 drawing of ball 10 on erection seat 1 and appliance cover 2, then by milling, dig, bore the groove that processes installation ratchet 11,12,13,14, and when being installed in above-mentioned ratchet on erection seat 1 and the appliance cover 2, each ratchet is mixed corresponding wire spring; Planet wheel spindle 5 and appliance cover 2 adopt interference fit to install.
With reference to Fig. 2, Fig. 3 and Fig. 4, chain wheel rim 3, satellite gear 4, sun wheel rim 5, speed change cover 9 and ratchet 11,12,13,14 all adopt the steel plate drawing about 3mm, heat-treat then.The protuberance that speed change is overlapped 9 surfaces can design and be processed into even numbers such as 2,4,6, the backward rotation angle of foot-operated crank during their decision speed changes, and correspond to 180 °, 90 °, 60 ° etc. successively.
Seeing figures.1.and.2 at last is installed in the bicycle middle shaft place with above-mentioned parts, and putting chain can use, and three-wheel vehicle equally also can adopt.
Claims (5)
1, a kind of derailleur, partly be made up of erection seat 1, appliance cover 2, chain wheel rim 3, satellite gear 4, sun wheel rim 6, speed change cover 9 etc., it is characterized in that: chain wheel rim 3, satellite gear 4, sun wheel rim 5, speed change cover 9 are installed between erection seat 1 and the appliance cover 2.
2, derailleur according to claim 1 is characterized in that: the external tooth of the internal tooth of chain wheel rim 3 and sun wheel rim 6 all meshes with satellite gear 4.
3, derailleur according to claim 1 and 2 is characterized in that: be equipped with braking ratchet 13 and location ratchet 14 on the erection seat 1; Be equipped with synchronous ratchet 11 and displacement ratchet 12 on the appliance cover 2.
4, derailleur according to claim 1 and 2 is characterized in that: the outside face of speed change cover 9 is evenly equipped with the even number protuberance, forms the even number groove between these protuberances.
5, derailleur according to claim 3 is characterized in that: the outside face of speed change cover 9 is evenly equipped with the even number protuberance, forms the even number groove between these protuberances.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87214967 CN87214967U (en) | 1987-11-01 | 1987-11-01 | Variable-speed gear of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87214967 CN87214967U (en) | 1987-11-01 | 1987-11-01 | Variable-speed gear of bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87214967U true CN87214967U (en) | 1988-09-28 |
Family
ID=4829174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87214967 Withdrawn CN87214967U (en) | 1987-11-01 | 1987-11-01 | Variable-speed gear of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87214967U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102602503A (en) * | 2012-04-21 | 2012-07-25 | 叶雪峰 | Reverse speed change control mechanism |
| CN102642594A (en) * | 2012-04-27 | 2012-08-22 | 朱幕松 | Bicycle chain-guard-type inversed foot-controlled wireless transmission |
| CN108602546A (en) * | 2016-02-05 | 2018-09-28 | 周贤珍 | Bicycle crank speed change gear |
-
1987
- 1987-11-01 CN CN 87214967 patent/CN87214967U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102602503A (en) * | 2012-04-21 | 2012-07-25 | 叶雪峰 | Reverse speed change control mechanism |
| CN102602503B (en) * | 2012-04-21 | 2013-07-17 | 叶雪峰 | Reverse speed change control mechanism |
| CN102642594A (en) * | 2012-04-27 | 2012-08-22 | 朱幕松 | Bicycle chain-guard-type inversed foot-controlled wireless transmission |
| CN108602546A (en) * | 2016-02-05 | 2018-09-28 | 周贤珍 | Bicycle crank speed change gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |