CN201268380Y - Front drive miniature sprocket drive mechanism of bicycle - Google Patents
Front drive miniature sprocket drive mechanism of bicycle Download PDFInfo
- Publication number
- CN201268380Y CN201268380Y CNU2008201417816U CN200820141781U CN201268380Y CN 201268380 Y CN201268380 Y CN 201268380Y CN U2008201417816 U CNU2008201417816 U CN U2008201417816U CN 200820141781 U CN200820141781 U CN 200820141781U CN 201268380 Y CN201268380 Y CN 201268380Y
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- driving
- bicycle
- chain
- miniature
- wheel
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Abstract
The utility model relates to a bicycle front-driving miniature chain wheel transmission mechanism which comprises a front-driving transmission device fixed on a front fork of a bicycle, wherein the front-driving transmission device comprises a foot pedal part, a front shaft, a hub part supported by a rolling bearing and a chain wheel transmission part formed by fixing a wheel disk and a front shaft and fixing a flywheel and a hub. The bicycle front-driving miniature chain wheel transmission mechanism is characterized in that the front-driving transmission device adopts a miniature chain transmission pair and is arranged on the inner side of the front fork of the bicycle. The utility model has the advantages that a rear driving device of the bicycle is changed into a front driving device by using a mechanics principle, a rider can move a barycenter forwards to reduce the pressure of the hip, so a rider can more save labor. When a rider rides, both feet tread forwards, a body can lean backwards, both hands can not bear the pressure of the body when holding bicycle handles, so the rider can save more labor, power can be better centralized and transmitted in a riding process, the structure of a front driving device adopts a miniature chain wheel to transmit the power, so the utility model has more compact structure and higher transmission efficiency.
Description
Technical field
The utility model belongs to bicycle, relates in particular to the miniature chain wheel driving mechanism of a kind of bicycle before driving.
Background technology
At present, various forms of bicycles being arranged on market, is to adopt the back-wheel drive mode substantially.That is, trailing wheel is the active opinion, and the bicyclist scrunches pedal and rotates by the flywheel on wheel disc, chain and the trailing wheel, drives front-wheel, and bicycle is moved ahead.Rear drive configuration makes bicyclist's center of gravity all drop on buttocks, and the bicyclist is tired easily, the anterior blood of buttocks freely pathology can not occur.Patent once disclosed a kind of three-wheel vehicle of before driving, its structure is the front-wheel drive that is arranged on the front fork, front-wheel drive is captiveed joint with stirrup with support, support one end is connected with front fork and front axle, its other end and stirrup lower end join and with the axle of actuating device, wheel disc, crank, and the pedal assembly affixed, the wheel disc of actuating device is in transmission connection by chain and the flywheel that is fixed on the front axle, and the upper end of described stirrup is connected with the front fork shoulder.Its complex structure, the structure requisite space is bigger, is unfavorable for adjusting revolution ratio, rides effort so pedal.
The utility model content
The purpose of this utility model is to overcome the deficiency of above-mentioned technology, and provide a kind of bicycle before driving miniature chain wheel driving mechanism, adopt the preceding driving device of bicycle, the bicyclist can be moved forward center of gravity, alleviate pressure to buttocks, and the structure of preceding driving device adopts miniature chain wheel driving mechanism, can make structure compact more, and driving efficiency is higher.
The utility model for achieving the above object, by the following technical solutions: the miniature chain wheel driving mechanism of a kind of bicycle before driving, comprise the before driving driving device that is fixed on the bicycle front fork, the before driving driving device comprises that pedal part, front axle and the axle skin portion by the antifriction-bearing box supporting thereof and wheel disc and front axle fix, flywheel and the fixing chain sprocket drive part of axle skin is characterized in that: described before driving driving device adopts miniature chain-driving pair and places the bicycle front fork inboard.
Described before driving driving device adopts eccentricity fine adjustment mechanism, and the fine setting distance is ± 1mm.
Described bicycle front fork pipe is provided with bracket holes, run through eccentric bolt in the bracket holes, eccentric bolt is connected with the chain drum axle sleeve by bearing, fix large and small chain drum on the chain drum axle sleeve, described large and small chain drum links by flywheel, the wheel disc of chain with the chain sprocket drive part respectively, and eccentric bolt is fastened on the front fork tube by nut.
The sprocket wheel of described chain sprocket drive part and the miniature chain-driving pair of chain strip adoption 2.5 pitches.
The beneficial effects of the utility model: it is to utilize mechanics principle, and the rear drive equipment of bicycle is become front driving device, and the bicyclist can be moved forward center of gravity, alleviates the pressure to buttocks.The bicyclist rides more laborsaving.People's both feet when riding scrunch forward, and health can be to layback, and both hands are held the pressure that handlebar can not be subjected to health, can better concentrate the transmission of power when riding, the structure of preceding driving device adopts miniature chain wheel driving mechanism, can make structure compact more, and driving efficiency is higher.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A view of Fig. 1.
Among the figure: 1, front fork, 2, pedal, 3, front axle, 4, antifriction-bearing box, 5, the axle skin, 6,7 large and small chain drums, 8, eccentric bolt, 9, the chain drum axle sleeve, 10, bracket holes, 11, flywheel, 12, wheel disc, 13, chain, 14, nut.
The specific embodiment
Describe the specific embodiment of the present utility model in detail below in conjunction with accompanying drawing and preferred embodiment.
As shown in the figure, the miniature chain wheel driving mechanism of a kind of bicycle before driving, comprise the before driving driving device that is fixed on the bicycle front fork 1, the before driving driving device comprises pedal 2 parts, front axle 3 and fixes with front axle by axle skin 5 parts and the wheel disc 12 of antifriction-bearing box 4 supportings, flywheel 11 adopts miniature chain-driving pair and places the bicycle front fork inboard with the fixing chain sprocket drive part of axle skin, described before driving driving device.Described before driving driving device adopts eccentricity fine adjustment mechanism, and the fine setting distance is ± 1mm.Described bicycle front fork pipe is provided with bracket holes 10, run through eccentric bolt 8 in the bracket holes, eccentric bolt is connected with chain drum axle sleeve 9 by bearing 4, fix large and small chain drum 6,7 on the chain drum axle sleeve, described large and small chain drum links by flywheel, the wheel disc of chain 13 with the chain sprocket drive part respectively, and eccentric bolt is fastened on the front fork tube by nut 14.The sprocket wheel of described chain sprocket drive part and the miniature chain-driving pair of chain strip adoption 2.5 pitches.Antifriction-bearing box adopts 1000903 bearings.Principle of work: the bicyclist drives wheel disc after scrunching pedal, and sprocket wheel drives little chain drum by chain, and coaxial big chain plate is moved in the chainlet dribbling, big chain plate by chain drive flywheel and axle skin, front-wheel rotates, and drives trailing wheel, and bicycle is moved ahead.
The above only is preferred embodiment of the present utility model, is not structure of the present utility model is done any pro forma restriction.Every foundation technical spirit of the present utility model all still belongs in the scope of the technical solution of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (4)
1, the miniature chain wheel driving mechanism of a kind of bicycle before driving, comprise the before driving driving device that is fixed on the bicycle front fork, the before driving driving device comprises that pedal part, front axle and the axle skin portion by the antifriction-bearing box supporting thereof and wheel disc and front axle fix, flywheel and the fixing chain sprocket drive part of axle skin is characterized in that: described before driving driving device adopts miniature chain-driving pair and places the bicycle front fork inboard.
2, the miniature chain wheel driving mechanism of bicycle before driving according to claim 1 is characterized in that: described before driving driving device adopts eccentricity fine adjustment mechanism, and the fine setting distance is ± 1mm.
3, the miniature chain wheel driving mechanism of bicycle before driving according to claim 1 and 2, it is characterized in that: described bicycle front fork pipe is provided with bracket holes, run through eccentric bolt in the bracket holes, eccentric bolt is connected with the chain drum axle sleeve by bearing, fix large and small chain drum on the chain drum axle sleeve, described large and small chain drum links by flywheel, the wheel disc of chain with the chain sprocket drive part respectively, and eccentric bolt is fastened on the front fork tube by nut.
4, the miniature chain wheel driving mechanism of bicycle before driving according to claim 1 is characterized in that: the sprocket wheel of described chain sprocket drive part and the miniature chain-driving pair of chain strip adoption 2.5 pitches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201417816U CN201268380Y (en) | 2008-08-29 | 2008-08-29 | Front drive miniature sprocket drive mechanism of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201417816U CN201268380Y (en) | 2008-08-29 | 2008-08-29 | Front drive miniature sprocket drive mechanism of bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201268380Y true CN201268380Y (en) | 2009-07-08 |
Family
ID=40840971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201417816U Expired - Fee Related CN201268380Y (en) | 2008-08-29 | 2008-08-29 | Front drive miniature sprocket drive mechanism of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201268380Y (en) |
-
2008
- 2008-08-29 CN CNU2008201417816U patent/CN201268380Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090708 Termination date: 20120829 |