CN2210849Y - Hollow crank for bicycle - Google Patents
Hollow crank for bicycle Download PDFInfo
- Publication number
- CN2210849Y CN2210849Y CN 94246724 CN94246724U CN2210849Y CN 2210849 Y CN2210849 Y CN 2210849Y CN 94246724 CN94246724 CN 94246724 CN 94246724 U CN94246724 U CN 94246724U CN 2210849 Y CN2210849 Y CN 2210849Y
- Authority
- CN
- China
- Prior art keywords
- garden
- bicycle
- utility
- hollow
- model
- 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 provides a hollow crank for bicycles, comprising a central disc, a cranked rod and a pedal disc. The utility model is characterized in that the cranked rod which is a hollow body is made by processing a round steel pipe. The central disc and the pedal disc are respectively welded on both ends of the cranked rod. The outer layer of the hollow crank is provided with a plastic decorative protective jacket by injection molding. The utility model has the advantages the utility model can save lots of steel, simplify processing technology, reduce the self weight of bicycles and enables the external appearances of bicycles more beautiful.
Description
The utility model relates to a kind of bicycle use hollow crank.
Its running part system of existing bicycle is reached the purpose of walking by wheel disc and chain gear, the garden Zhou Yundong of wheel disc then is that manpower reaches by crank, the used power of people's pin is stepped in pedal, drive wheel disc by crank and make garden Zhou Yundong, traditional crank can be made through heating, forging processing, machinework and surface treatment by the garden steel material base of real core, therefore cause that processing technology is cumbersome, labour intensity is high, efficient is low and materials are more, increased the weight of the deadweight of bicycle, it is stiff, heavy that its moulding seems.
But the purpose of this utility model is to provide a kind of simplified processing process, enhances productivity, but again saving in material, alleviate the bicycle hollow crank of bicycle weight.
The utility model is realized by following measure:
Bicycle hollow crank has garden, center dish, toggle-action lever and pedal garden dish; toggle-action lever is a hollow; steel pipe repressed processing in employing garden is welded with garden, center dish and pedal garden dish respectively at the two ends of toggle-action lever, hollow crank superficies are injected with the decorative plastic protecting sleeve.
The wall thickness of bicycle hollow toggle-action lever is the 1-2 millimeter.
Description of drawings:
Fig. 1 is the integral structure scheme drawing of bicycle hollow crank;
Fig. 2 is a bicycle hollow crank handle bar A-A cutaway view.
Below in conjunction with accompanying drawing the utility model is further described:
Bicycle hollow crank comprises garden, center dish (1), toggle-action lever (3) and pedal garden dish (4); described toggle-action lever (3) is the hollow body; repressed the processing of employing garden steel pipe; the wall thickness of toggle-action lever is the 1-2 millimeter; be welded with garden, center dish (1) and pedal garden dish (4) respectively at the two ends of toggle-action lever (3), hollow crank superficies are injected with decorative plastic protecting sleeve (2).
The utility model has the advantage of that toggle-action lever adopts the repressed processing of garden steel pipe, its skin The surface also is injected with the decorative plastic protective sleeve, but so both simplified processing process, enhance productivity, save great deal of steel, reduce product cost; Can alleviate again the deadweight of bicycle; The outward appearance that makes simultaneously bicycle is create an aesthetic feeling more, if the present invention is used for the production of whole bicycle cranks, its social benefit and economic benefit are considerable.
Claims (2)
1, a kind of bicycle hollow crank; it comprises garden, center dish (1), toggle-action lever (3) and pedal garden dish (4); it is characterized in that toggle-action lever (3) is the hollow body; employing garden steel pipe processes; be welded with garden, center dish (1) and pedal garden dish (4) respectively at the two ends of toggle-action lever, hollow crank superficies are injected with decorative plastic protecting sleeve (2).
2, bicycle hollow crank according to claim 1, the wall thickness that it is characterized in that hollow crank handle bar (3) is the 1-2 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94246724 CN2210849Y (en) | 1994-11-25 | 1994-11-25 | Hollow crank for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94246724 CN2210849Y (en) | 1994-11-25 | 1994-11-25 | Hollow crank for bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2210849Y true CN2210849Y (en) | 1995-10-25 |
Family
ID=33852140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94246724 Expired - Fee Related CN2210849Y (en) | 1994-11-25 | 1994-11-25 | Hollow crank for bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2210849Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068838C (en) * | 1995-08-04 | 2001-07-25 | 岛野株式会社 | Bicycle crank and its manufacturing method |
| CN100369710C (en) * | 2005-05-17 | 2008-02-20 | 韩德玮 | Method for producing hollow crank |
| US11142280B2 (en) | 2016-03-24 | 2021-10-12 | The Hive Global, Inc. | Bicycle crank with spindle attachment structure |
| US11351815B2 (en) | 2017-08-21 | 2022-06-07 | The Hive Global, Inc. | Bicycle cassette with clamping connection |
| US11485449B2 (en) | 2015-09-01 | 2022-11-01 | The Hive Global, Inc. | Bicycle cassette with locking connection |
| US11932351B2 (en) | 2020-07-17 | 2024-03-19 | The Hive Global, Inc. | Conical bicycle cassette sprocket structure |
-
1994
- 1994-11-25 CN CN 94246724 patent/CN2210849Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068838C (en) * | 1995-08-04 | 2001-07-25 | 岛野株式会社 | Bicycle crank and its manufacturing method |
| CN100369710C (en) * | 2005-05-17 | 2008-02-20 | 韩德玮 | Method for producing hollow crank |
| US11485449B2 (en) | 2015-09-01 | 2022-11-01 | The Hive Global, Inc. | Bicycle cassette with locking connection |
| US11142280B2 (en) | 2016-03-24 | 2021-10-12 | The Hive Global, Inc. | Bicycle crank with spindle attachment structure |
| US11351815B2 (en) | 2017-08-21 | 2022-06-07 | The Hive Global, Inc. | Bicycle cassette with clamping connection |
| US11932351B2 (en) | 2020-07-17 | 2024-03-19 | The Hive Global, Inc. | Conical bicycle cassette sprocket structure |
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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 |