CN2111923U - Bicycle's double-speed variator - Google Patents
Bicycle's double-speed variator Download PDFInfo
- Publication number
- CN2111923U CN2111923U CN 91218773 CN91218773U CN2111923U CN 2111923 U CN2111923 U CN 2111923U CN 91218773 CN91218773 CN 91218773 CN 91218773 U CN91218773 U CN 91218773U CN 2111923 U CN2111923 U CN 2111923U
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- flywheel
- wheel
- bicycle
- double
- speed
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Abstract
The utility model relates to a speed variator for a bicycle. Two sets of transmission systems with different transmission ratios are composed of the original single-stage free wheel, a controllable free wheel, double chains and a big and a small chain wheels, and respectively perform actions through the regulation control of a double-gear speed varying handle, a controlling wire and a controlling box installed beside the free wheel so that the utility model adapts to different requirements for slope climbing, country crossing or loading, etc. when a bicycle runs, therefore the utility model achieves the goals of speed variation and labor saving. The speed variator has the advantages of simple structure, convenient and reliable speed variation, large utilization rate to parts of the existing bicycle, easy refitting to shaped bicycles and strong practicability.
Description
The utility model belongs to a kind of derailleur, and it mainly is the improvement to the transmission system of coventional type and heavy type.
The transmission system of variable speed bicycle commonly used is divided into two types of internal speed-changing and outer speed changes at present, and wherein speed change is main in addition.Since its complex structure, the cost height, and also load-bearing capacity is limited, be difficult to especially use on the heavy type car in coventional type, also there is certain deficiency in its gearshift performance (as reliability, speed change time, feel etc.), thereby limited by practical, only is applied on the sports bicycle at present.
It is a kind of simple and reliable for structure that the utility model purpose is to provide, solid durable, and gear shift is convenient, and cost is low, has stronger climbing, the transmission system of cross country power, makes it to be used for general energy type and heavy type car.
The purpose of this utility model can reach by following structure:
Minor sprocket in parallel installs a controlled flywheel additional on the car rear axle on head sprocket, installs a chain additional between hinge wheel and the controlled flywheel and is connected, promptly adopt double-strandedly take turns, double-stranded bar and the different driving system of twin-stage flywheel composition transmitting ratio.At the other control capsule that is equipped with of round trip flight wheel, one gear change hand lever box is arranged on the handlebar, come adjusting control by control line between the two, spring in the control capsule is shunk or loosen, then control depressing or discharging of jack in the controlled flywheel, thereby make controlled Case of fly-wheel and core wheel produce clutch, reach the purpose that double speed exchanges.
The purpose of this utility model can also adopt following measure to reach:
1. controlled flywheel is installed in the former single freewheel outside, and near its other installation and control box, the jack head of controlled flywheel has a pin to stretch out this flywheel plate washer, inserts in the control capsule.
2. a circular positioning boss is arranged in the control capsule.
3. control line one end connects the second gear control handle, and the other end is connected with an end of spring.
4. minor sprocket is installed in parallel the inboard at hinge wheel.
Accompanying drawing has reflected embodiment of the present utility model, is described as follows:
Fig. 1 is the annexation figure of system.
Fig. 2 is a jack shape scheme drawing in the controlled flywheel of twin-stage flywheel.
Fig. 3 and Fig. 4 are control capsule control principle scheme drawings.
Parts title explanation among the figure:
1.-the twin-stage flywheel, by former single freewheel (inboard), controlled flywheel (outside) is formed;
2.-control capsule; 9.-hinge wheel;
3.-control line; 10.-the jack of outer flywheel;
4.-double-stranded bar; 11.-jack head pin;
5.-gear change hand lever box; 12.-spring;
6.-second gear gear change hand lever; 13.-the ratchet in the Case of fly-wheel;
7.-wheel; 14.-Case of fly-wheel;
8.-minor sprocket; 15.-the positioning boss in the control capsule.
Below in conjunction with accompanying drawing present embodiment is described further:
In conjunction with Fig. 1: the controlled flywheel in hinge wheel (9) and the twin-stage flywheel (1) is formed the bigger driving system of transmitting ratio; Minor sprocket (8) and interior flywheel are formed the less driving system of transmitting ratio.
In conjunction with Fig. 2: the jack of controlled flywheel (10) head pin (11) stretches out this flywheel plate washer in the twin-stage flywheel, and inserts in the control capsule (2).
In conjunction with Fig. 3: when gear change hand lever (6) during in handle box (5) the place ahead, the dragline of the uncontrolled line of the spring in the control capsule (12) (3) is loose shape; This moment, controlled flywheel jack top was uncontrolled.When large and small sprocket wheel rotated simultaneously, the ratchet (13) in the controlled Case of fly-wheel (14) withstood the flywheel fuse by jack, drove wheel (7) and rotated.This moment, hinge wheel drove wheel, and bicycle is in high speed gear; Flywheel rotated in minor sprocket then drove, but it rotates the rotation less than wheel, and relative wheel is in " jack " state.
In conjunction with Fig. 4: when gear change hand lever being pushed handle box rear, control line is strained spring, spring borrows the positioning boss (15) in the control capsule to be positioned to circular, the jack head pin (11) of controlled flywheel is limited to rotates the jack that makes in the flywheel in the annulus by down, when big minor sprocket rotates simultaneously, the ratchet top is less than jack in the overcoat of controlled flywheel, and the hinge wheel driving system is inoperative to wheel, forms " idle running "; This moment, minor sprocket drove wheel, and bicycle is in low gear.
The utility model compared with prior art has the following advantages:
1. to different purposes (such as load-carrying) or be in the bicycle that climbing state is travelled, can select flexibly two speed, practical.
2. because speed-change process is the jack of the controlled flywheel of control depresses or loosen, suffered resistance is very little. The relation of gear change hand lever and speed threshold is directly perceived (front-fast; Afterwards-slow). Therefore, simple, reliable, the faster system response of speed-change process.
3. two speed change gear main bodys are to use controlled flywheel, and other parts adopt existing bicycle part ratio very big, and the also available freewheel repacking of this controlled flywheel, therefore, the reliability of not only using is guaranteed, and is easy to produce, cost is very low, is easy to the bicycle repacking to having finalized the design.
4. whole system is simple in structure, dependable performance. Experimental results show that: it is quite light with low or first gear load-carrying climbing to load onto this device. Be applicable to plain edition particularly on the heavy type car, effect is equally also fine on the lightweight car, and is therefore, practical.
Claims (3)
1, a kind of derailleur is made up of flywheel, chain, sprocket wheel, it is characterized in that:
A. on the car rear axle, install a controlled flywheel additional, minor sprocket in parallel on the head sprocket, and install chain connection additional, promptly adopt twin-stage flywheel, double-stranded wheel, double-stranded bar structure;
B. on round trip flight wheel side one control capsule is housed, a spring and a circular positioning boss are arranged in the box, spring one end is connected with the variable speed control handle by control line;
C. the jack head pin of controlled flywheel stretches out this flywheel plate washer, inserts in the control capsule.
2, transmission system as claimed in claim 1 is characterized in that: controlled flywheel is installed in the former single freewheel outside, and control capsule is installed near controlled flywheel.
3, transmission system as claimed in claim 1 or 2 is characterized in that: minor sprocket is installed in parallel the inboard at hinge wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91218773 CN2111923U (en) | 1991-07-20 | 1991-07-20 | Bicycle's double-speed variator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91218773 CN2111923U (en) | 1991-07-20 | 1991-07-20 | Bicycle's double-speed variator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2111923U true CN2111923U (en) | 1992-08-05 |
Family
ID=4926179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91218773 Granted CN2111923U (en) | 1991-07-20 | 1991-07-20 | Bicycle's double-speed variator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2111923U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI549859B (en) * | 2013-02-19 | 2016-09-21 | 速聯有限責任公司 | Electric bicycle transmission |
-
1991
- 1991-07-20 CN CN 91218773 patent/CN2111923U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI549859B (en) * | 2013-02-19 | 2016-09-21 | 速聯有限責任公司 | Electric bicycle transmission |
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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 |