CN2215451Y - Adjustable speed-changing crank for bicycle - Google Patents
Adjustable speed-changing crank for bicycle Download PDFInfo
- Publication number
- CN2215451Y CN2215451Y CN 94222761 CN94222761U CN2215451Y CN 2215451 Y CN2215451 Y CN 2215451Y CN 94222761 CN94222761 CN 94222761 CN 94222761 U CN94222761 U CN 94222761U CN 2215451 Y CN2215451 Y CN 2215451Y
- Authority
- CN
- China
- Prior art keywords
- crank
- slide block
- bicycle
- chute
- adjustable 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
Links
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- Escalators And Moving Walkways (AREA)
Abstract
The utility model relates to an adjustable speed-changing crank for a bicycle. A chute is arranged on the crank, a slide block is sheathed in the chute, and the slide block is connected with a pedal and provided with a fixed pin of the slide block. The slide block can be moved up and down to adjust the length of the crank according to people's requirements to meet different people's riding requirements.
Description
The utility model relates to a kind of bicycle adjustable speed-changing crank.
At present, though the bicycle crank length that people use has difference, be nonadjustable, can not be long, muscular strength is big or small and environment for use according to cyclist's height, leg, adjust crank length at any time.Make some people feel that crank is long, cause muscle over stretch or excess shrinkage, and some people feels that crank is too short, muscular contraction force can not be utilized fully, cause what is called " fatigue, climbing are painstakingly by bike ".
The purpose of this utility model is in order to overcome the deficiency of above-mentioned prior art, and provide a kind of length-adjustable bicycle crank, promptly regulate the length of the crank between foot-operated and the axis,, change the speed of a motor vehicle and the comfortable effect of riding thereby reach to adapt to the people of different heights, leg length, muscular strength.
For achieving the above object, the utility model is taked following technical scheme:
On crank, be provided with chute, be provided with slide block in the chute, foot-operated being fixed on the slide block, slide block can move up and down in the crank chute, choose length after, the spring holder on the slide block can be fixed voluntarily.
The utility model is compared with background technology has following beneficial effect: have the flexibly adjustable comfortable advantage of riding, can adjust crank length at any time according to human needs by bike.When personal short short legs or evenness of road surface need fast running by bike, the crank active distance can be transferred short, the distance that is about between foot-operated and the axis is transferred near, the person's that so both can give full play to the short legs the maximum muscular strength of riding, again because of having dwindled bone activity point of view scope, make the contraction of muscle motion can catch up with the higher speed of stepping on, thereby riding speed is accelerated.When cyclist's height, when leg length maybe need be gone up a slope, crank can be transferred long, the distance that is about between foot-operated and the axis is transferred a little further, so just can bring into play the advantage that lower limb are long, muscular strength is strong, also helps on the road surface of injustice simultaneously or the strong effect of riding of acquisition when climbing.Because the crank adjustable in length so can adapt to different people requirement by bike, makes the people comfortable, laborsaving.
Fig. 1 is a kind of constructional drawing of the present utility model;
Fig. 2 is the lateral plan of Fig. 1.
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, 2, on crank 1, offer trapezoidal chute 2, in bone groove 2, be provided with slide block 3, fixing foot-operatedly 4 on the slide block 3, and spring holder 5 is arranged,, can move up and down slide block 3 according to the requirement of different people to crank length, and fixing with locating dowel pin 5.
Claims (1)
1, a kind of bicycle adjustable speed-changing crank, it is characterized in that: on crank (1), offer chute (2), in the chute (2) cover be placed with can be in chute (2) upper and lower mobile slide block (3), slide block (3) affixed foot-operated (4), on slide block (3), be provided with spring set pin (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94222761 CN2215451Y (en) | 1994-10-11 | 1994-10-11 | Adjustable speed-changing crank for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94222761 CN2215451Y (en) | 1994-10-11 | 1994-10-11 | Adjustable speed-changing crank for bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2215451Y true CN2215451Y (en) | 1995-12-20 |
Family
ID=33836679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94222761 Expired - Fee Related CN2215451Y (en) | 1994-10-11 | 1994-10-11 | Adjustable speed-changing crank for bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2215451Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1086658C (en) * | 1997-05-23 | 2002-06-26 | 张役国 | Self-adapted type bottom bracket bearing stepless gear-change |
| CN107757811A (en) * | 2016-08-15 | 2018-03-06 | 张伟锋 | A kind of crank component of bicycle |
| CN107776821A (en) * | 2016-08-26 | 2018-03-09 | 天津市金汇兴自行车有限公司 | A kind of preparation method of adjustable bicycle pedal |
-
1994
- 1994-10-11 CN CN 94222761 patent/CN2215451Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1086658C (en) * | 1997-05-23 | 2002-06-26 | 张役国 | Self-adapted type bottom bracket bearing stepless gear-change |
| CN107757811A (en) * | 2016-08-15 | 2018-03-06 | 张伟锋 | A kind of crank component of bicycle |
| CN107776821A (en) * | 2016-08-26 | 2018-03-09 | 天津市金汇兴自行车有限公司 | A kind of preparation method of adjustable bicycle pedal |
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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 |