CN2143198Y - Length adjustable bicycle crank - Google Patents
Length adjustable bicycle crank Download PDFInfo
- Publication number
- CN2143198Y CN2143198Y CN 92237627 CN92237627U CN2143198Y CN 2143198 Y CN2143198 Y CN 2143198Y CN 92237627 CN92237627 CN 92237627 CN 92237627 U CN92237627 U CN 92237627U CN 2143198 Y CN2143198 Y CN 2143198Y
- Authority
- CN
- China
- Prior art keywords
- guide groove
- inner sleeve
- screw
- length
- outer sleeve
- 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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- Automatic Cycles, And Cycles In General (AREA)
Abstract
The utility model discloses a pedal crank which can be used on a bicycle or a tricycle. The existing pedal crank provided with the fixed length is changed to the pedal crank composed of an inner sleeve and an outer sleeve, and the length of the pedal crank composed of the inner sleeve and the outer sleeve is adjustable; riders can obtain the optimal length of the pedal cranks. The utility model has the advantages of simple structure and convenient operation; besides, the labor can be saved.
Description
The utility model belongs to bicycle and drives the crank field.
Because each one stature height difference, the optimum length of required pedal crank also has nothing in common with each other in the time of by bike, and existing bicycle does not take into full account performance rider's pedal force, the length of its pedal crank all is changeless, the user can't regulate voluntarily, and everyone can both well be brought into play by pedal force.
The purpose of this utility model provides a kind of simple in structure, can satisfy the length-adjustable bicycle pedal crank of each one needs.
Technical measures of the present utility model are the cranks that the changeless bicycle pedal crank of length changed into adjustable in length, the structure of this crank mainly is made up of outer sleeve and inner sleeve and screw, wherein, one end of outer sleeve is connected with sprocket shaft, the remainder of outer sleeve has guide groove, two screw holes are arranged on the guide groove wall, inner sleeve and guide groove match and are inserted in the guide groove and can stretch, be drilled with several and the cooresponding counterbore of screw hole location on the inner sleeve, two screws are screwed in two screw holes of guide groove wall, the screw front end passes the guide groove wall and is inserted in the corresponding counterbore of inner sleeve, and inner sleeve is not held with pedal shaft and is connected.During use,, the inner sleeve in the guide groove is pulled out or inserted can adjust crank length as long as screw out screw, and then with screw-driving.
Accompanying drawing 1 is an outer sleeve structure scheme drawing of the present utility model;
Accompanying drawing 2 is inner sleeve structural representations of the present utility model.
Be further described as follows in conjunction with the accompanying drawings:
Referring to accompanying drawing 1, outer sleeve is made by carbon steel, one end 1 and bicycle chain wheel shaft bolt together, should be connected with sprocket shaft with bolt more earlier with after the sprocket wheel riveted joint its outer sleeve that is installed in the right side, the center of the body of rod 2 of outer sleeve has convex shape guide groove 3, on the guide groove wall of the other end of the body of rod 2 two threaded screw holes 4 is arranged.Referring to accompanying drawing 2, the body of rod 5 of inner sleeve is the solid body of rod of convex shape, be contained in the convex shape guide groove of outer sleeve and can slide, with the body of rod 5 of guide groove wall screwing hole 4 relative positions on be drilled with several counterbores 6, the pitch-row of counterbore 6 equals 1/2nd or 1/3rd of screw hole 4 pitch-rows and gets final product, inner sleeve does not hold 7 to have a threaded hole to be connected with the bicycle pedal axle, and screw is selected socket head cap screw or flathead screw for use, and its front end is a polished rod in the part that puts in the inner sleeve counterbore.During use, inner sleeve is inserted in the guide groove of outer sleeve, two screws are screwed in two screw holes of outer sleeve, and the screw front end is inserted in the counterbore of inner sleeve can be linked to be inside and outside sleeve a pedal crank, and the rider can adjust to optimum length with crank as required.
The utility model has the advantages that simple in structurely, the pedal crank that Zhi Xu changes Xian You can become the performance that the Hang car of the adjustable Zi of crank length or tricycle make each one pedal force obtain well, makes the cyclist more laborsaving.
Claims (2)
1, a kind of length-adjustable bicycle pedal crank, it is characterized in that forming by outer sleeve and inner sleeve and screw, wherein, one end of outer sleeve is connected with sprocket shaft, the remainder of outer sleeve has guide groove, two screw holes are arranged on the guide groove wall, inner sleeve and guide groove match and are inserted in the guide groove and can stretch, be drilled with several and the corresponding counterbore of screw hole location on the inner sleeve, two screws are screwed in two screw holes on the guide groove wall, the screw front end passes the guide groove wall and is inserted in the corresponding counterbore of inner sleeve, and inner sleeve is terminal to be connected with pedal shaft.
2, length-adjustable bicycle pedal crank as claimed in claim 1, what it is characterized in that guide groove is shaped as the convex shape guide groove, and the screw front end is a polished rod in the part that puts in counterbore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92237627 CN2143198Y (en) | 1992-11-09 | 1992-11-09 | Length adjustable bicycle crank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92237627 CN2143198Y (en) | 1992-11-09 | 1992-11-09 | Length adjustable bicycle crank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2143198Y true CN2143198Y (en) | 1993-10-06 |
Family
ID=33778858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92237627 Expired - Fee Related CN2143198Y (en) | 1992-11-09 | 1992-11-09 | Length adjustable bicycle crank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2143198Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102837793A (en) * | 2012-09-20 | 2012-12-26 | 杨雨瞳 | Variable-torque bicycle with bumpers, signal lamps and awning driven by multiple persons |
| CN103738455A (en) * | 2013-12-28 | 2014-04-23 | 吴新平 | Length adjustable crank |
| CN105003440A (en) * | 2015-08-18 | 2015-10-28 | 武汉凌达压缩机有限公司 | Crankshaft, rotary compressor and temperature conditioning equipment |
| CN107082103A (en) * | 2017-04-10 | 2017-08-22 | 缙云县刀浪车业有限公司 | Chainless bicycle |
| CN108189952A (en) * | 2017-12-01 | 2018-06-22 | 杭州伊风科技有限公司 | It can free assembled crank |
-
1992
- 1992-11-09 CN CN 92237627 patent/CN2143198Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102837793A (en) * | 2012-09-20 | 2012-12-26 | 杨雨瞳 | Variable-torque bicycle with bumpers, signal lamps and awning driven by multiple persons |
| CN103738455A (en) * | 2013-12-28 | 2014-04-23 | 吴新平 | Length adjustable crank |
| CN105003440A (en) * | 2015-08-18 | 2015-10-28 | 武汉凌达压缩机有限公司 | Crankshaft, rotary compressor and temperature conditioning equipment |
| CN107082103A (en) * | 2017-04-10 | 2017-08-22 | 缙云县刀浪车业有限公司 | Chainless bicycle |
| CN108189952A (en) * | 2017-12-01 | 2018-06-22 | 杭州伊风科技有限公司 | It can free assembled crank |
| CN108189952B (en) * | 2017-12-01 | 2019-11-12 | 杭州伊风科技有限公司 | It can free assembled crank |
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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 |