CN203528732U - Structure for preventing loosening of threaded connection of bottom bracket of bicycle - Google Patents
Structure for preventing loosening of threaded connection of bottom bracket of bicycle Download PDFInfo
- Publication number
- CN203528732U CN203528732U CN201320401702.1U CN201320401702U CN203528732U CN 203528732 U CN203528732 U CN 203528732U CN 201320401702 U CN201320401702 U CN 201320401702U CN 203528732 U CN203528732 U CN 203528732U
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- CN
- China
- Prior art keywords
- bicycle
- crank
- bottom bracket
- bolt
- utility
- 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 discloses a structure for preventing loosening of threaded connection of a bottom bracket of a bicycle. The structure is characterized in that the thread direction of a bolt fastening the bottom bracket and a crank of the bicycle is identical with the moving direction of the crank. The bottom bracket and a left side crank in the riding direction of the bicycle are fastened by a left hand bolt. After being located via a square tapered surface, the bottom bracket and the left side crank of the bicycle are fastened by the left hand bolt. During riding, the left side crank moving anticlockwise enables the fastening bolt to be tighter and tighter in use, so that the problem of potential loosening risk of the structure in the conventional bicycle is effectively solved and the potential safety hazards are eliminated.
Description
Technical field
The utility model relates to bicycle, specifically, is a kind of bicycle middle shaft loosening structure that is threaded that prevents.
Background technology
Existing bicycle, axis and left side crank (direction of riding) are used dextrorotation bolted after adopting cubic conical suface location conventionally.During cycling, the crank conter clockwise motion of (direction of riding left side see) left side, when axis and crank four directions conical suface are positioned with gap or when loosening, just can drive binding bolt conter clockwise to move, thereby cause axis and left side crank to get loose.
Utility model content
Technical problem to be solved in the utility model is, provides a kind of simple in structure, the convenient and practical bicycle middle shaft loosening structure that is threaded that prevents.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of bicycle middle shaft loosening structure that is threaded that prevents is for the hand of spiral of the bolt of fastening bicycle middle shaft and crank, identical with the sense of motion of crank.
The left side crank of described axis and cycling direction adopts left-handed bolted.
The beneficial effects of the utility model are: by adopting cubic conical suface to locate the rear left-handed bolted of using at bicycle middle shaft and left side (direction of riding) crank.While riding, the crank of (direction of riding left side is seen) left side conter clockwise motion can make binding bolt use tighter and tighter, thereby efficiently solves the potential danger that gets loose of structure herein of existing bicycle, has eliminated potential safety hazard.
Accompanying drawing explanation
Fig. 1 is bicycle middle shaft of the present utility model and left side winch connecting structure part sectional view.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
As shown in Figure 1, bicycle middle shaft 1 of the present utility model adopts cubic conical suface 3 location rear fastening with left-handed bolt 4 with left side crank 2 (direction of riding).While riding, the crank 2 of (direction of riding left side is seen) left side conter clockwise motion can make left-handed bolt 4 produce conter clockwise friction force, thereby uses tighter and tighter.
Above-described embodiment is only for illustrating technological thought of the present utility model and feature, its object is to make those skilled in the art can understand content of the present utility model and implement according to this, can not only with the present embodiment, limit the scope of the claims of the present utility model, be equal variation or the modification that spirit that all the utility model disclose is done, still drop in the scope of the claims of the present utility model.
Claims (2)
1. prevent the bicycle middle shaft loosening structure that is threaded, it is characterized in that, for the hand of spiral of the bolt of fastening bicycle middle shaft and crank, identical with the sense of motion of crank.
2. the bicycle middle shaft loosening structure that is threaded that prevents according to claim 1, is characterized in that, described axis (1) adopts left-handed bolt (4) fastening with the left side crank (2) of cycling direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320401702.1U CN203528732U (en) | 2013-07-08 | 2013-07-08 | Structure for preventing loosening of threaded connection of bottom bracket of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320401702.1U CN203528732U (en) | 2013-07-08 | 2013-07-08 | Structure for preventing loosening of threaded connection of bottom bracket of bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203528732U true CN203528732U (en) | 2014-04-09 |
Family
ID=50414976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320401702.1U Expired - Fee Related CN203528732U (en) | 2013-07-08 | 2013-07-08 | Structure for preventing loosening of threaded connection of bottom bracket of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203528732U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103318368A (en) * | 2013-07-08 | 2013-09-25 | 天津富士达自行车有限公司 | Structure for preventing loose threaded connection of bottom bracket in bicycle |
-
2013
- 2013-07-08 CN CN201320401702.1U patent/CN203528732U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103318368A (en) * | 2013-07-08 | 2013-09-25 | 天津富士达自行车有限公司 | Structure for preventing loose threaded connection of bottom bracket in bicycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160918 Address after: 301609 Tianjin Road, Jinghai Economic Development Zone, Tai'an road and Emma road junction Patentee after: TIANJIN FUSHIDA TECHNOLOGY CO., LTD. Address before: 300301 Tianjin city Dongli District Junliangcheng crossing South Patentee before: Tianjin Fujita Bicycle Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181011 Address after: 301600 Tianjin Jinghai District Jinghai Economic Development Zone South District Tai'an road and Emma Road intersection. Patentee after: Tianjin Fujitec Sports Goods Co. Address before: 301609 Tianjin Jinghai Economic Development Zone South District Tai'an road and Emma Road intersection. Patentee before: TIANJIN FUSHIDA TECHNOLOGY CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20200708 |