CN2283029Y - Improved central axle for bicycle - Google Patents
Improved central axle for bicycle Download PDFInfo
- Publication number
- CN2283029Y CN2283029Y CN 97205139 CN97205139U CN2283029Y CN 2283029 Y CN2283029 Y CN 2283029Y CN 97205139 CN97205139 CN 97205139 CN 97205139 U CN97205139 U CN 97205139U CN 2283029 Y CN2283029 Y CN 2283029Y
- Authority
- CN
- China
- Prior art keywords
- axle
- diameter
- bicycle
- central axle
- right crank
- 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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Images
Landscapes
- Rolling Contact Bearings (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model belongs to a vehicle for household use, particularly an improved central axle for a bicycle. The utility model is composed of a right crank, a right crank, and a central axle roller. The axle diameters on both ends of the central axle roller are provided with bearings. The exteriors of an elastic collar and a grease seal are provided with an axle sleeve, a chain wheel, the left crank and the right crank. The diameter of the bearings which are installed on the axle diameters of the both ends of the middle axle is equal to or is smaller than the diameter of a root circle d < root > of the chain wheel. The chain wheel is rotated following the central axle roller and the bearings in riding and pedaling. The power arm is extended, the working stroke of the pedaling force is reduced, the riding of the bicycle is comfortable, facile, smooth and safe, the rotational speed is raised, the pressure angle is reduced, and the labor is saved. The utility model is suitable for remaking and reforming various bicycles.
Description
The utility model belongs to the home-use vehicle, particularly a kind of improved bicycle middle shaft.
At present, the bicycle middle shaft of use is by axis rod, axis ball-collecting rack, and axis ball bowl, middle axle bumper are formed, when riding, step the pedal that is installed on the crank, axis is rotated together with sprocket wheel, sprocket wheel drives chain, flywheel, rear axle, and rear wheel is rotated, and drives bicycle running.But axis ball-collecting rack, the ball bowl of this bicycle wear and tear easily, and efficient is low.
Task of the present utility model is to overcome in the above technology not enough, and a kind of improved bicycle middle shaft is provided.
Task of the present utility model is, a kind of improved bicycle middle shaft, form by left and right crank, axis rod, on the diameter of axle of axis rod two ends, bearing is installed, circlip, oil sealing, outside axle sleeve, sprocket wheel, the left and right crank installed substitutes ball-collecting rack, ball bowl, the bearing diameter of installing on the diameter of axle of axis rod two ends≤sprocket tooth root circle d
RootDiameter is ridden when scrunching, and along with axis rod, bearing rotate, has prolonged power arm, reduces scrunching power work done stroke, makes cycling comfortable brisk, steadily safety.
Specify with by way of example below in conjunction with accompanying drawing.
Fig. 1 shows a kind of improved bicycle middle shaft section of structure.
1-left side crank among the figure; The 2-crank pin; The 3-packing ring; The 4-nut; The 5-oil sealing; The 6-circlip; The 7-bearing; 8-axis rod; The 9-axle sleeve; The 10-sprocket wheel; The right crank of 11-.See Fig. 1, a kind of improved bicycle middle shaft, by left and right crank (1), (11), axis rod (8) is formed, and bearing (7) is installed, circlip (6) on the diameter of axle of axis rod (8) two ends, oil sealing (5), the outside axle sleeve (9) of installing, right-hand member is equipped with sprocket wheel (10), and the outer end is by the fixing left crank (1) of crank pin (2), right crank (11).Bearing (7) diameter≤sprocket wheel (10) the tooth root circle d that installs on the diameter of axle of axis rod (8) two ends
RootDiameter.
The bicyclist scrunches the pedal on left and right crank (1), (11), and axis rod (8), bearing (7), sprocket wheel (10) are together rotated, and by chain drive flywheel, rear axle, trailing wheel is rotated, and drives bicycle running.
A kind of improved bicycle middle shaft improves rotating speed, reduces angle of obliquity, and is laborsaving, is applicable to new system, the transformation of the way of various bicycles.
Claims (2)
1, a kind of improved bicycle middle shaft, by left and right crank (1), (11), axis rod (8) is formed, and it is characterized in that on the diameter of axle of axis rod (8) two ends bearing (7) being installed circlip (6), oil sealing (5), the outside axle sleeve (9) of installing.
2, a kind of improved bicycle middle shaft according to claim 1 is characterized in that bearing (7) diameter≤sprocket wheel (10) the tooth root circle d that installs on the diameter of axle of axis rod (8) two ends
RootDiameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97205139 CN2283029Y (en) | 1997-01-23 | 1997-01-23 | Improved central axle for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97205139 CN2283029Y (en) | 1997-01-23 | 1997-01-23 | Improved central axle for bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2283029Y true CN2283029Y (en) | 1998-06-03 |
Family
ID=33925430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97205139 Expired - Fee Related CN2283029Y (en) | 1997-01-23 | 1997-01-23 | Improved central axle for bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2283029Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106394795A (en) * | 2016-11-21 | 2017-02-15 | 浙江闪电车业有限公司 | Front chain wheel structure of bicycle |
-
1997
- 1997-01-23 CN CN 97205139 patent/CN2283029Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106394795A (en) * | 2016-11-21 | 2017-02-15 | 浙江闪电车业有限公司 | Front chain wheel structure of bicycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |