CN201240484Y - Speed changer of bicycle - Google Patents
Speed changer of bicycle Download PDFInfo
- Publication number
- CN201240484Y CN201240484Y CNU2008201084470U CN200820108447U CN201240484Y CN 201240484 Y CN201240484 Y CN 201240484Y CN U2008201084470 U CNU2008201084470 U CN U2008201084470U CN 200820108447 U CN200820108447 U CN 200820108447U CN 201240484 Y CN201240484 Y CN 201240484Y
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- China
- Prior art keywords
- big
- gear
- ring gear
- driving gear
- gearbox body
- 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 bicycle transmission device; a gearbox body is arranged on a medial shaft bicycle body; a transmission shaft and a driving gear are arranged in the gearbox body; a small driven gear with smaller diameter and a big driven gear with larger diameter are fixed and mounted on the transmission shaft; a gap is maintained between the small driven gear and the big driven gear; both ends of the transmission shaft are connected with the gearbox body through a bearing base; one end of the transmission shaft is threaded through the gearbox body to be connected with a sprocket; the driving gear is composed of a big driving gear with bigger diameter and a small driving gear with smaller diameter; the big driving gear is fixedly connected with the small driving gear; the driving gear is nested on a pedal spindle with both ends connected with the gearbox body through the bearing base; the driving gear can rotate along with the pedal spindle and move leftwards along the axial direction of the pedal spindle to enable the small driven gear to be meshed with the big driving gear, or move rightwards to enable the big driven gear to be meshed with the small driving gear. The bicycle transmission device can realize the effects of flat land acceleration and energy-saving grade climbing, and have reasonable design, simple structure and low manufacturing cost, safe and convenient application.
Description
Technical field
The utility model relates to a kind of derailleur, relates in particular to a kind of axis place that is installed in, and utilizes gear to realize the derailleur of speed change.
Background technology
The running part of bicycle is made up of parts such as pedal, axis, wheel disc, crank, chain, flywheel, rear axle, trailing wheels usually.Step on pedal by manpower, by crank, Transmissions such as sprocket wheel, chain, flywheel, rear axle drive wheel revolutions, thereby bicycle is constantly advanced.At present the speed change of bicycle adopts usually increases several flywheel sheets, combines with sprocket wheel on the axis, forms various transmission ratio, recently realizes by the transmission that changes sprocket wheel and flywheel.This kind transmission system is presented in the outside more, and the extraneous rainwater of direct contact, earth, greasy dirt etc. must often carry out cleaning maintenance, change speed needs to adjust during use, is not easily, and can only be used for the level land speed-raising, climbing is effort relatively, and structure is relative complex also, the manufacturing cost height.
Summary of the invention
The purpose of this utility model provide a kind of simple in structure, cost of manufacture is low, the airtight derailleur that is installed in the axis place, realizes speed change by big or small gear meshing.
For reaching above-mentioned purpose, the utility model has adopted following technical scheme:
A kind of derailleur, it is to be provided with a gearbox body on the bicycle middle shaft car body, be provided with a transmission shaft and a driving wheel in the gearbox body, be installed with less little ring gear of a diameter and the bigger big ring gear of a diameter on this transmission shaft; leave the gap between little ring gear and the big ring gear; the transmission shaft two ends are connected with gearbox body by bearing seat, and an end passes gearbox body and is connected with sprocket wheel; This driving wheel is made up of the diameter that is fixed together bigger big driving gear and the less small active gear of diameter, be set in two ends by on bearing seat and the pedal spindle that gearbox body is connected, can rotate with pedal spindle, and can make little ring gear and big driving gear engagement, or move right big ring gear and small active gear are meshed along axially moving left of pedal spindle.
Described derailleur, wherein, described pedal spindle is provided with a raised line, and an end of raised line is provided with the block of a height greater than raised line; Be provided with a groove that matches with raised line in the described driving wheel, one side and the block of driving wheel offset, the affixed bearing seat of another side, backguy and spring are installed on the described bearing seat, the other end of described backguy links to each other with bicycle controller by a dead sheave, and the other end of spring is fixed on the bearing seat that connects gearbox body and pedal spindle.
Described derailleur, the diameter of its medium and small ring gear and small active gear is 3cm-5cm, and big ring gear and big driving gear diameter are 15cm-18cm, and the gap between little ring gear and the big ring gear is greater than the thickness of big driving gear.
Owing to adopted technique scheme, made the utility model possess following technique effect:
1, derailleur of the present utility model can adopt the mode of different gears mesh according to actual needs, when needs are climbed, adjusts small active gear and big ring gear engagement, and the speed of a motor vehicle is slack-off, and it is more laborsaving to climb; And the Shi Zeke that advances on the level land improves the speed of a motor vehicle of bicycle with big driving gear and the engagement of little ring gear, be the ordinary bicycle speed of a motor vehicle 2-4 doubly, can realize simultaneously quickening and the labour-saving effect of riding;
2, derailleur of the present utility model, whole device is sealed in the gearbox body, does not contact with the external world, and health need not often be cleaned more;
3, derailleur of the present utility model, the device of having formed a cover driving driving wheel sway with being provided with of raised line, groove, block, backguy and spring, make it make little ring gear and big driving gear engagement, or move right big ring gear and small active gear are meshed along axially moving left of pedal spindle;
4, derailleur of the present utility model only needs simple pulling backguy can realize the conversion of speed, and is safe and convenient to use;
In a word, the utility model can be implemented in simultaneously that the level land is quickened and climbing labour-saving effect, reasonable in design, simple in structure, cost of manufacture is low, safe and convenient to use.
Description of drawings
Fig. 1 is the structural representation of the utility model derailleur;
Among the figure:
The 1-gearbox body, 2-transmission shaft, the little ring gear of 3-, the big ring gear of 4-, 5-sprocket wheel, 6-chain, the big driving gear of 7-, 8-small active gear, 9-pedal spindle, 91-raised line, 92-block, 10-bearing seat, 11-backguy, 12-spring, 13-dead sheave.
The specific embodiment
Describe the utility model in detail below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of derailleur, on the bicycle middle shaft car body, be provided with a gearbox body 1, be provided with a transmission shaft 2 and a driving wheel in the gearbox body 1, be installed with less little ring gear 3 of a diameter and the bigger big ring gear 4 of a diameter on this transmission shaft 2; leave the gap between little ring gear 3 and the big ring gear 4; gap is greater than the thickness of big driving gear; transmission shaft 2 two ends are connected with gearbox body 1 by bearing seat; an end passes gearbox body 1 and is connected with sprocket wheel 5; chain 6 is installed on the sprocket wheel 5, and drive trailing wheel; This driving wheel is made up of the diameter that is fixed together bigger big driving gear 7 and the less small active gear 8 of diameter, be set in two ends by on bearing seat and the pedal spindle 9 that gearbox body 1 is connected, can rotate with pedal spindle 9, and can make little ring gear 3 and big driving gear 7 engagements, or move right and make big ring gear 4 and small active gear 8 engagements along axially moving left of pedal spindle 9.
Further, described derailleur, its pedal spindle 9 is provided with a raised line 91, and an end of raised line 91 is provided with the block 92 of a height greater than raised line 91 height; Be provided with a groove that matches with raised line 91 in the described driving wheel, one side and the block 92 of driving wheel offset, the affixed bearing seat 10 of another side, backguy 11 and spring 12 are installed on the described bearing seat 10, the other end of described backguy 11 links to each other with bicycle controller by a dead sheave 13, and the other end of spring 12 is fixed on the bearing seat that connects gearbox body 1 and pedal spindle 9.Can realize that with this driving wheel can rotate and can be along axial sway of pedal spindle and location with pedal spindle.Certainly the utility model is not limited in this kind structure, anyly can realize that driving wheel rotates with pedal spindle and all is fine along the structure of axial sway of pedal spindle and location.
Described derailleur, the diameter of its medium and small ring gear 3 and small active gear 8 is 3cm-5cm, big ring gear 4 and big driving gear 7 diameters are 15cm-18cm.
When needs are climbed, adjust small active gear 8 and big ring gear 4 engagements, the speed of a motor vehicle is slack-off, and it is more laborsaving to climb; And advance Shi Zeke with big driving gear 7 and little ring gear 3 engagements on the level land, the speed of a motor vehicle that improves bicycle reaches 2-4 times of the ordinary bicycle speed of a motor vehicle.
The above is preferred embodiment of the present utility model only, is not that the utility model is done any pro forma qualification.Any change that is equal to, modification or differentiation etc. that all those skilled in the art utilize the technical solution of the utility model that the foregoing description is made all still belong in the scope of the technical solution of the utility model.
Claims (3)
1, a kind of derailleur is characterized in that:
On the bicycle middle shaft car body, be provided with a gearbox body (1), be provided with a transmission shaft (2) and a driving wheel in the gearbox body (1), be installed with less little ring gear (3) of a diameter and the bigger big ring gear (4) of a diameter on this transmission shaft (2); leave the gap between little ring gear (3) and the big ring gear (4); transmission shaft (2) two ends are connected with gearbox body (1) by bearing seat, and an end passes gearbox body (1) and is connected with sprocket wheel (5);
This driving wheel is made up of the diameter that is fixed together bigger big driving gear (7) and the less small active gear (8) of diameter, be set in two ends by on bearing seat and the pedal spindle (9) that gearbox body (1) is connected, rotate with pedal spindle (9), and make little ring gear (3) and big driving gear (7) engagement, or move right and make big ring gear (4) and small active gear (8) engagement along axially moving left of pedal spindle (9).
2, derailleur according to claim 1 is characterized in that:
Described pedal spindle (9) is provided with a raised line (91), and an end of raised line (91) is provided with the block (92) of a height greater than raised line (91) height;
Be provided with a groove that matches with raised line (91) in the described driving wheel, one side of driving wheel and block (92) offset, the affixed bearing seat of another side (10), backguy (11) and spring (12) are installed on the described bearing seat (10), the other end of described backguy (11) links to each other with bicycle controller by a dead sheave (13), and the other end of spring (12) is fixed on the bearing seat that connects gearbox body (1) and pedal spindle (9).
3, derailleur according to claim 1 and 2 is characterized in that:
The diameter of described little ring gear (3) and described small active gear (8) is 3cm-5cm, described big ring gear (4) and described big driving gear (7) diameter are 15cm-18cm, and the gap between described little ring gear (3) and the big ring gear (4) is greater than the thickness of big driving gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201084470U CN201240484Y (en) | 2008-06-06 | 2008-06-06 | Speed changer of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201084470U CN201240484Y (en) | 2008-06-06 | 2008-06-06 | Speed changer of bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201240484Y true CN201240484Y (en) | 2009-05-20 |
Family
ID=40713774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201084470U Expired - Fee Related CN201240484Y (en) | 2008-06-06 | 2008-06-06 | Speed changer of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201240484Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110228560A (en) * | 2019-07-08 | 2019-09-13 | 王树华 | A kind of bicycle having gear |
-
2008
- 2008-06-06 CN CNU2008201084470U patent/CN201240484Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110228560A (en) * | 2019-07-08 | 2019-09-13 | 王树华 | A kind of bicycle having gear |
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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: 20090520 Termination date: 20110606 |