JP2003054477A - Auxiliary crank for bicycle - Google Patents
Auxiliary crank for bicycleInfo
- Publication number
- JP2003054477A JP2003054477A JP2001282357A JP2001282357A JP2003054477A JP 2003054477 A JP2003054477 A JP 2003054477A JP 2001282357 A JP2001282357 A JP 2001282357A JP 2001282357 A JP2001282357 A JP 2001282357A JP 2003054477 A JP2003054477 A JP 2003054477A
- Authority
- JP
- Japan
- Prior art keywords
- crank
- bicycle
- auxiliary crank
- auxiliary
- pedal
- 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.)
- Pending
Links
Landscapes
- Transmission Devices (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、自転車のクランク
とペダルの間にもう一つのクランクを取り付けることに
より、主クランクを回そうとする力を効率よく得ること
ができる。
【０００２】
【従来の技術】従来は、主クランクに直接ペダルが取り
付けられているため、ペダルを踏む方向に規制がなく、
回転方向にペダルを踏み続けるのは難しかった。
【０００３】
【発明が解決しようとする課題】脚力を効率よく回転方
向の力に変えられるクランクが必要であった。
【０００４】
【課題を解決するための手段】主クランクとペダルの間
に副クランクを設け、副クランクが主クランクを引っ張
るようにする。
【０００５】
【発明実施の形態】主クランクに回転可能な副クランク
を副クランク軸を介して取り付け、副クランクにペダル
を取り付ける。
【実施例】図１ 図２のように副クランクを設ける。
【発明の効果】このような副クランクを設けることによ
り、脚力を効率よく回転力に変えることができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bicycle in which another crank is attached between a crank and a pedal of a bicycle, so that a force for turning a main crank can be efficiently obtained. be able to. [0002] Conventionally, since a pedal is directly mounted on a main crank, there is no restriction on the direction in which the pedal is depressed.
It was difficult to keep pressing the pedal in the direction of rotation. [0003] There has been a need for a crank that can efficiently convert leg force into rotational force. [0004] An auxiliary crank is provided between the main crank and the pedal, and the auxiliary crank pulls the main crank. [0005] A rotatable sub-crank is mounted on a main crank via a sub-crank shaft, and a pedal is mounted on the sub-crank. DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 An auxiliary crank is provided as shown in FIG. By providing such a sub-crank, the leg force can be efficiently converted to the rotational force.
【図面の簡単な説明】 【図１】主クランクと副クランクの側面図である。 【図２】主クランクと副クランクの上面図である。[Brief description of the drawings] FIG. 1 is a side view of a main crank and a sub crank. FIG. 2 is a top view of a main crank and a sub crank.
Claims (1)
く副クランクを設けるClaims: 1. An auxiliary crank which rotates in a rotational direction with respect to a main crank of a bicycle is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001282357A JP2003054477A (en) | 2001-08-14 | 2001-08-14 | Auxiliary crank for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001282357A JP2003054477A (en) | 2001-08-14 | 2001-08-14 | Auxiliary crank for bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003054477A true JP2003054477A (en) | 2003-02-26 |
Family
ID=19106019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001282357A Pending JP2003054477A (en) | 2001-08-14 | 2001-08-14 | Auxiliary crank for bicycle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003054477A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4535402B1 (en) * | 2009-03-12 | 2010-09-01 | 井手 遊生 | Bicycle crank mechanism |
| KR102518111B1 (en) * | 2022-03-22 | 2023-04-04 | 서달원 | Crankarm assembly for a bicycle which can provide the length extension effect |
-
2001
- 2001-08-14 JP JP2001282357A patent/JP2003054477A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4535402B1 (en) * | 2009-03-12 | 2010-09-01 | 井手 遊生 | Bicycle crank mechanism |
| JP2010208582A (en) * | 2009-03-12 | 2010-09-24 | Yusei Ide | Crank mechanism of bicycle |
| KR102518111B1 (en) * | 2022-03-22 | 2023-04-04 | 서달원 | Crankarm assembly for a bicycle which can provide the length extension effect |
| WO2023182740A1 (en) * | 2022-03-22 | 2023-09-28 | 서달원 | Bicycle crank arm assembly having length extension effect |
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