CN200974578Y - Bicycle having gear box - Google Patents
Bicycle having gear box Download PDFInfo
- Publication number
- CN200974578Y CN200974578Y CNU2006201620055U CN200620162005U CN200974578Y CN 200974578 Y CN200974578 Y CN 200974578Y CN U2006201620055 U CNU2006201620055 U CN U2006201620055U CN 200620162005 U CN200620162005 U CN 200620162005U CN 200974578 Y CN200974578 Y CN 200974578Y
- Authority
- CN
- China
- Prior art keywords
- bicycle
- sprocket
- gear box
- speed gear
- change speed
- 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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- General Details Of Gearings (AREA)
Abstract
The utility model discloses a bicycle with a gearbox, including a bicycle frame, a bicycle central shaft, and a back-wheel sprocket; the bicycle frame is provided with the gearbox; the gearbox includes the box body; the bicycle central shaft is arranged in the box body of the gearbox; the two ends of the central shaft respectively extend out of the box body from the through-hole of the central shaft on both sides of the gearbox and then are communicated with the left and right pedals of the bicycle; the bicycle central shaft is fixed with an active sprocket; the driven sprocket and the middle sprocket are arranged between the active sprocket and the back-wheel sprocket of the bicycle; the driven sprocket and the middle sprocket are arranged in the gearbox and are coaxially communicated; the active sprocket and the driven sprocket, and the middle sprocket and the back-wheel sprocket are respectively communicated through the chain. The utility model changes the transmission ratio between the sprockets, and improves the traveling speed of the bicycle; compared with the multi-speed bicycle, the device reduces the number of the sprockets; the friction between the sprocket and the chain is reduced, therefore, the device increases the service life of the bicycle.
Description
Technical field
The utility model relates to a kind of bicycle, particularly changes a kind of bicycle with change speed gear box of road speed by being located at change speed gear box on the cycle frame.
Background technology
China is populous, almost all there is bicycle in each family, the use amount of bicycle occupies first in the world, in one quite long period, be still the main vehicle of people's trip at China's bicycle, a though bicycle great variety of models, but do not have breakthrough improvement, can be divided into not two kinds of speed changes and variable speed bicycle basically, the bicycle major part of speed change is not that a driving wheel drives a flower wheel at present, speed is single and slower, for a change variable speed bicycle has appearred in this shortcoming on the market, and this bicycle mostly is how fast, with several sprocket wheels to the different numbers of teeth, transmission through chain realizes speed change, but because sprocket wheel increases the chain lengthening, this bicycle manufacturing process more complicated, manufacturing cost is higher.
The utility model content
That the purpose of this utility model provides is simple in structure, productive costs is low and can improve a kind of bicycle with change speed gear box of the speed of a motor vehicle.
For achieving the above object, the technical solution adopted in the utility model is: a kind of bicycle with change speed gear box, comprise cycle frame, bicycle middle shaft, rear wheel sprocket, described cycle frame is provided with change speed gear box, described change speed gear box comprises casing, and described bicycle middle shaft is located in the casing of change speed gear box, its two ends respectively from be located at the change speed gear box both sides shaft through-hole stretch out outside the casing, and be connected with two pedal legs about bicycle respectively, it is characterized in that:
Be fixed with drive sprocket on the described bicycle middle shaft, be provided with driven sprocket, intermediate chain wheel between the rear wheel sprocket of described drive sprocket and bicycle, described driven sprocket is positioned at intermediate chain wheel that change speed gear box is coaxial to be connected, and described drive sprocket is connected by chain respectively with rear wheel sprocket with driven sprocket, intermediate chain wheel.
Below be the utility model further improvement in the technical proposal:
The two ends of described bicycle middle shaft are provided with bearing, bearing seat, and described bearing seat is captiveed joint with the casing of change speed gear box.
The both sides correspondence of the casing of described change speed gear box is provided with bayonet socket, is provided with turning cylinder in the described bayonet socket, and described driven sprocket, intermediate chain wheel are located on the turning cylinder, is provided with bearing between described driven sprocket, intermediate chain wheel and the turning cylinder.
Described drive sprocket has axle sleeve, and described axle sleeve is provided with some screws that are used for fixing drive sprocket.
The top of the casing of described change speed gear box is provided with dust boot, has prevented from that rainwater or dust from entering to make each sprocket wheel corrosion in the change speed gear box.
The number of teeth of described drive sprocket and intermediate chain wheel is respectively 36 teeth, and the number of teeth of described driven sprocket is 18 teeth, has changed the transmitting ratio between the individual sprocket wheel, has improved road speed.
Beneficial effect:
The utility model adopts above technical scheme, making drive sprocket drive driven sprocket rotates, driven sprocket and intermediate chain wheel coaxial rotation, intermediate chain wheel drives rear wheel sprocket and drives the bicycle rear rotation, make bicycle walking, because the number of teeth difference of each sprocket wheel, improved the transmitting ratio between each sprocket wheel, increased the rotating speed that bicycle rear rotates, improved the road speed of bicycle, compared, reduced the quantity of sprocket wheel with multi-speed bicycle, friction between sprocket wheel and the chain has also reduced, and has therefore increased the service life of bicycle.
The utility model is described in further detail below in conjunction with drawings and Examples.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model embodiment;
Accompanying drawing 2 is the utility model embodiment gearbox designs scheme drawing;
Accompanying drawing 3 is the birds-eye view of the utility model embodiment change speed gear box;
Accompanying drawing 4 is the schematic diagram of the utility model embodiment change speed gear box transmission.
The specific embodiment
Embodiment, as shown in Figure 1, a kind of bicycle with change speed gear box, comprise cycle frame, bicycle middle shaft 2, rear wheel sprocket 12, described cycle frame is provided with change speed gear box 1, and described change speed gear box 1 comprises casing 4, and described bicycle middle shaft 2 is located in the casing 4 of change speed gear box 1, its two ends respectively from be located at change speed gear box 1 both sides shaft through-hole stretch out outside the casing, and be connected with two pedal legs about bicycle respectively.
As Fig. 2, shown in Figure 3, be fixed with drive sprocket 3 on the described bicycle middle shaft 2, be provided with driven sprocket 5 between the rear wheel sprocket 12 of described drive sprocket 3 and bicycle, intermediate chain wheel 6, described driven sprocket 5 is positioned at 1 coaxial connection of change speed gear box with intermediate chain wheel 6, described drive sprocket 3 and driven sprocket 5, intermediate chain wheel 6 is connected by chain respectively with rear wheel sprocket 12, described drive sprocket 1 is respectively 36 teeth with the number of teeth of intermediate chain wheel 2, the number of teeth of described driven sprocket 3 is 18 teeth, changed the transmitting ratio between the individual sprocket wheel, improved road speed, the two ends of described bicycle middle shaft 6 are provided with bearing 7, bearing seat 13, described bearing seat 13 is captiveed joint with the casing 4 of change speed gear box 1, the both sides correspondence of the casing 4 of described change speed gear box 1 is provided with bayonet socket 10, be provided with turning cylinder 9 in the described bayonet socket 10, described driven sprocket 5, intermediate chain wheel 6 is located on the turning cylinder 9, described driven sprocket 5, be provided with bearing between intermediate chain wheel 6 and the turning cylinder 9, described drive sprocket 3 has axle sleeve, described axle sleeve is provided with 4 screws 11 that are used for fixing drive sprocket 3, the top of the casing 4 of described change speed gear box 1 is provided with dust boot 8, has prevented from that rainwater or dust from entering to make each sprocket wheel corrosion in the change speed gear box 1.
As shown in Figure 4, drive sprocket 3 drives driven sprocket 5 and rotates, driven sprocket 5 and intermediate chain wheel 6 coaxial rotation, intermediate chain wheel 6 drives rear wheel sprocket 12 and drives the bicycle rear rotation, make bicycle walking, because the number of teeth difference of each sprocket wheel, improved the transmitting ratio between each sprocket wheel, increased the rotating speed that bicycle rear rotates, improved the road speed of bicycle, compared, reduced the quantity of sprocket wheel with multi-speed bicycle, friction between sprocket wheel and the chain has also reduced, and has therefore increased the service life of bicycle.
Claims (6)
1, a kind of bicycle with change speed gear box, comprise cycle frame, bicycle middle shaft (2), rear wheel sprocket (12), described cycle frame is provided with change speed gear box (1), described change speed gear box (1) comprises casing (4), described bicycle middle shaft (2) is located in the casing (4) of change speed gear box (1), its two ends respectively from be located at change speed gear box (1) both sides shaft through-hole stretch out outside the casing, and be connected with two pedal legs about bicycle respectively, it is characterized in that:
Be fixed with drive sprocket (3) on the described bicycle middle shaft (2), be provided with driven sprocket (5), intermediate chain wheel (6) between the rear wheel sprocket (12) of described drive sprocket (3) and bicycle, described driven sprocket (5) is positioned at coaxial connection of change speed gear box (1) with intermediate chain wheel (6), and described drive sprocket (3) is connected by chain respectively with rear wheel sprocket (12) with driven sprocket (5), intermediate chain wheel (6).
2, a kind of bicycle with change speed gear box according to claim 1 is characterized in that: the two ends of described bicycle middle shaft (6) are provided with bearing (7), bearing seat (13), and described bearing seat (13) is captiveed joint with the casing (4) of change speed gear box (1).
3, a kind of bicycle according to claim 2 with change speed gear box, it is characterized in that: the both sides correspondence of the casing (4) of described change speed gear box (1) is provided with bayonet socket (10), be provided with turning cylinder (9) in the described bayonet socket (10), described driven sprocket (5), intermediate chain wheel (6) are located on the turning cylinder (9), are provided with bearing between described driven sprocket (5), intermediate chain wheel (6) and the turning cylinder (9).
4, a kind of bicycle according to claim 3 with change speed gear box, it is characterized in that: described drive sprocket (3) has axle sleeve, and described axle sleeve is provided with some screws (11) that are used for fixing drive sprocket (3).
5, a kind of bicycle with change speed gear box according to claim 4 is characterized in that: the top of the casing (4) of described change speed gear box (1) is provided with dust boot (8).
6, according to claim 1,2,3,4 one of them described a kind of bicycle with change speed gear box, it is characterized in that: described drive sprocket (1) is respectively 36 teeth with the number of teeth of intermediate chain wheel (2), and the number of teeth of described driven sprocket (3) is 18 teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201620055U CN200974578Y (en) | 2006-11-27 | 2006-11-27 | Bicycle having gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201620055U CN200974578Y (en) | 2006-11-27 | 2006-11-27 | Bicycle having gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200974578Y true CN200974578Y (en) | 2007-11-14 |
Family
ID=38900871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201620055U Expired - Fee Related CN200974578Y (en) | 2006-11-27 | 2006-11-27 | Bicycle having gear box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200974578Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417008A (en) * | 2010-09-27 | 2012-04-18 | 龚宝康 | Bicycle with sprocket type booster |
| CN113092433A (en) * | 2021-04-09 | 2021-07-09 | 广州新成生物科技有限公司 | Fluorescent detection device with oscillation |
-
2006
- 2006-11-27 CN CNU2006201620055U patent/CN200974578Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417008A (en) * | 2010-09-27 | 2012-04-18 | 龚宝康 | Bicycle with sprocket type booster |
| CN102417008B (en) * | 2010-09-27 | 2016-01-20 | 龚宝康 | Bicycle with sprocket type booster |
| CN113092433A (en) * | 2021-04-09 | 2021-07-09 | 广州新成生物科技有限公司 | Fluorescent detection device with oscillation |
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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: 20071114 Termination date: 20111127 |