JP2006290208A - Drive device for bicycle - Google Patents

Drive device for bicycle Download PDF

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Publication number
JP2006290208A
JP2006290208A JP2005115121A JP2005115121A JP2006290208A JP 2006290208 A JP2006290208 A JP 2006290208A JP 2005115121 A JP2005115121 A JP 2005115121A JP 2005115121 A JP2005115121 A JP 2005115121A JP 2006290208 A JP2006290208 A JP 2006290208A
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rear wheel
front wheel
rotational force
bicycle
crank pedal
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JP2005115121A
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Japanese (ja)
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Kenji Shirai
健次 白井
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  • Automatic Cycles, And Cycles In General (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To perform traveling by switching to the optimum drive system determined by a rider based on a traveling manner, the road surface condition or the like by adopting a rear wheel drive system, a front wheel drive system and all wheel drive system to one bicycle. <P>SOLUTION: The drive device for the bicycle is made to a constitution in which rotation force of a crank pedal 10 is transmitted from a crank shaft 12 to a front wheel and a rear wheel via a common intermediate shaft. Two clutches 20, 22 of a front wheel side clutch and a rear wheel side clutch are provided on the intermediate shaft 22 and the rear wheel drive system, the front wheel drive system and all wheel drive system are created by combination of engagement and disengagement of the two clutches. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、クランクペダルの回転力を前輪へ伝達する前輪伝達手段と前記クランクペダルの回転力を後輪へ伝達する後輪伝達手段とを持った自転車で、前記前輪伝達手段は前記クランクペダル回転力を前記前輪へ伝達と遮断ができるクラッチを持ち、前記後輪伝達手段は前記クランクペダル回転力を前記後輪へ伝達と遮断ができるクラッチを持っている自転車駆動装置に関する。 The present invention is a bicycle having a front wheel transmission means for transmitting the rotational force of the crank pedal to the front wheel and a rear wheel transmission means for transmitting the rotational force of the crank pedal to the rear wheel, wherein the front wheel transmission means is the crank pedal rotation The present invention relates to a bicycle drive apparatus having a clutch capable of transmitting and interrupting force to the front wheel, and the rear wheel transmitting means having a clutch capable of transmitting and interrupting the crank pedal rotational force to the rear wheel.

従来の自転車はクランクペダルの回転力で後輪を駆動する自転車がほとんどである。クランクペダルの回転力で前輪を駆動する前輪駆動自転車はペダル踏力で生じたクランクペダルの回転力をハンドル側の前輪へ自在軸継手経由で伝達する機構によって提案されている。クランクペダルの回転力で前輪と後輪を共に駆動する全輪駆動自転車も試作公開されている。 Most conventional bicycles drive the rear wheels by the rotational force of the crank pedal. A front-wheel drive bicycle that drives the front wheels by the rotational force of the crank pedal is proposed by a mechanism that transmits the rotational force of the crank pedal generated by the pedal depression force to the front wheel on the handle side via a universal joint. An all-wheel-drive bicycle that drives both the front and rear wheels with the torque of the crank pedal has also been made public.

特開平９−１０４３８５号公報JP-A-9-104385

クランクペダルの回転力で後輪を駆動する後輪駆動自転車、クランクペダルの回転力で前輪を駆動する前輪駆動自転車、およびクランクペダルの回転力で前後輪を共に駆動する全輪駆動自転車はあるが、これら３つの駆動方式を１台の自転車に取り入れて、乗り手がこれら３つの駆動方式を走り方や路面状況等から判断して最適な駆動方式に切替えて走行する自転車の技術は何ら開示・示唆されていない。 There are rear-wheel drive bicycles that drive the rear wheels with the rotational force of the crank pedal, front-wheel drive bicycles that drive the front wheels with the rotational force of the crank pedal, and all-wheel drive bicycles that drive both the front and rear wheels with the rotational force of the crank pedal. , Disclosure and suggestion of bicycle technology that incorporates these three driving methods into one bicycle, and the rider switches between these three driving methods based on the way of driving and road conditions, etc. and switches to the optimal driving method. It has not been.

前輪への動力（回転力）伝達手段と後輪への動力（回転力）伝達手段を持った自転車において、図２及び図３に示すように、各々の動力伝達手段はクランクペダル回転力を直接前輪６及び後輪７に伝達しないで、共通の中間軸２２経由で前輪６及び後輪７に回転力を伝達する構成にしている。この中間軸２２に前輪側クラッチ２１と後輪側クラッチ２０の２つのクラッチを設けて、２つのクラッチによる動力（クランクペダル回転力）の伝達と遮断の組み合わせ、つまり、前輪駆動にして走行する場合は前輪側クラッチを伝達にして後輪側クラッチを遮断にする。後輪駆動にして走行する場合は前輪側クラッチを遮断にして後輪側クラッチを伝達にする。全輪駆動にして走行する場合は前輪側クラッチを伝達にして後輪側クラッチを伝達にする。これにより一台の自転車で駆動方式を切替えて後輪駆動走行や前輪駆動走行又は全輪駆動走行ができる。 In a bicycle having power (rotational force) transmission means for the front wheels and power (rotational force) transmission means for the rear wheels, as shown in FIGS. 2 and 3, each power transmission means directly applies the crank pedal rotational force. The rotational force is transmitted to the front wheel 6 and the rear wheel 7 via the common intermediate shaft 22 without being transmitted to the front wheel 6 and the rear wheel 7. When the intermediate shaft 22 is provided with two clutches, ie, a front wheel side clutch 21 and a rear wheel side clutch 20, a combination of transmission and interruption of power (crank pedal rotational force) by the two clutches, that is, driving with front wheel drive Transmits the front wheel side clutch and disconnects the rear wheel side clutch. When traveling with rear wheel drive, the front wheel side clutch is disengaged and the rear wheel side clutch is transmitted. When traveling with all-wheel drive, the front wheel side clutch is transmitted and the rear wheel side clutch is transmitted. As a result, the driving method can be switched by one bicycle, and rear wheel driving traveling, front wheel driving traveling or all wheel driving traveling can be performed.

一台の自転車で前輪駆動走行と後輪駆動走行と全輪駆動走行を択一的に切替えて走行できるので、走行路面の路面状況や路面勾配等に合わせて適した駆動方式で走行できる。 Since one bicycle can selectively switch between front-wheel drive travel, rear-wheel drive travel, and all-wheel drive travel, the vehicle can travel with a driving method suitable for the road surface condition, road surface gradient, and the like.

以下、本発明に係る自転車駆動装置の実施の形態について図１ないし図２によって詳細に説明する。クランクペダル１０を漕げばそのクランクペダルの回転力はクランク軸１２からクランクスプロケット１１とチェーン１３と中間クランク側スプロケット１７を経由して中間軸２２に伝達される。 Hereinafter, an embodiment of a bicycle drive apparatus according to the present invention will be described in detail with reference to FIGS. When the crank pedal 10 is lifted, the rotational force of the crank pedal is transmitted from the crank shaft 12 to the intermediate shaft 22 via the crank sprocket 11, the chain 13, and the intermediate crank side sprocket 17.

中間軸２２はクランクペダル回転力が伝えられるスプロケット１７とクランクペダル回転力を後輪７へ伝達するスプロケット１９とクランクペダル回転力を前輪６へ伝達するスプロケット１８の３つのスプロケットと、クランクペダル回転力を後輪７に伝達と遮断の機能を持った後輪側クラッチ２０とクランクペダル回転力を前輪６に伝達と遮断の機能を持った前輪側クラッチ２１の２つのクラッチを備えている。 The intermediate shaft 22 includes a sprocket 17 to which the crank pedal rotational force is transmitted, a sprocket 19 that transmits the crank pedal rotational force to the rear wheel 7, a sprocket 18 that transmits the crank pedal rotational force to the front wheel 6, and a crank pedal rotational force. There are two clutches, a rear wheel clutch 20 having a function of transmitting and blocking the rear wheel 7 and a front wheel side clutch 21 having a function of transmitting and blocking the crank pedal rotational force to the front wheel 6.

中間軸２２に伝達されたクランクペダル回転力は２つのクラッチ２０，２１の操作によって、後輪駆動にしたり、前輪駆動にしたり、前輪と後輪の両輪を駆動する全輪駆動にすることができる。つまり、前輪駆動にして走行する場合は前輪側クラッチ２１を伝達にして後輪側クラッチ２０を遮断にしてクランクペダル回転力を中間前輪側スプロケット１８に伝達してチェーン経由で前車軸８を駆動する。後輪駆動にして走行する場合は前輪側クラッチ２１を遮断にして後輪側クラッチ２０を伝達にしてクランクペダル回転力を中間後輪側スプロケット１９に伝達してチェーン経由で後車軸９を駆動する。全輪駆動にして走行する場合は前輪側クラッチ２１と後輪側クラッチ２０を共に伝達にしてクランクペダル回転力を中間前輪側スプロケット１８と中間後輪側スプロケット１９に伝達して各々のチェーン経由で前車軸８と後車軸９を駆動する。 The crank pedal rotational force transmitted to the intermediate shaft 22 can be driven to the rear wheels, driven to the front wheels, or driven to all the wheels to drive both the front wheels and the rear wheels by operating the two clutches 20 and 21. . That is, when traveling with front wheel drive, the front wheel side clutch 21 is transmitted and the rear wheel side clutch 20 is disconnected, and the crank pedal rotational force is transmitted to the intermediate front wheel side sprocket 18 to drive the front axle 8 via the chain. . When traveling with rear wheel drive, the front wheel side clutch 21 is disconnected and the rear wheel side clutch 20 is transmitted to transmit the crank pedal torque to the intermediate rear wheel side sprocket 19 to drive the rear axle 9 via the chain. . When traveling with all-wheel drive, both the front wheel side clutch 21 and the rear wheel side clutch 20 are transmitted to transmit the crank pedal rotational force to the intermediate front wheel side sprocket 18 and the intermediate rear wheel side sprocket 19 to pass through each chain. The front axle 8 and the rear axle 9 are driven.

後輪７へのクランクペダル回転力の伝達は中間後輪側スプロケット１９からチェーン１６と後輪スプロケット２３と後車軸９を経由して後輪７へ伝達する。前輪６へのクランクペダル回転力の伝達は中間前輪側スプロケット１８からチェーン１４と自在軸フレーム側スプロケット２６を経由して自在軸２５に伝達する。自在軸２５は自在軸継手２４を備えていてハンドル１を切っても自在軸継手２４の作用でクランクペダル回転力は伝達されるので、クランクペダル回転力は自在軸２５から自在軸前輪側スプロケット２７とチェーン１５と前輪スプロケット２８と前車軸８を経由して前輪６へ伝達する。前輪６と後輪７の両輪へのクランクペダル回転力の伝達は、上記後輪７へのクランクペダル回転力の伝達と上記前輪６へのクランクペダル回転力の伝達の組み合わせとなる。 Transmission of the crank pedal rotational force to the rear wheel 7 is transmitted from the intermediate rear wheel side sprocket 19 to the rear wheel 7 via the chain 16, the rear wheel sprocket 23 and the rear axle 9. Transmission of the crank pedal rotational force to the front wheel 6 is transmitted from the intermediate front wheel side sprocket 18 to the universal shaft 25 via the chain 14 and the universal shaft frame side sprocket 26. The universal shaft 25 includes a universal shaft joint 24. Even if the handle 1 is cut, the crank pedal rotational force is transmitted by the action of the universal shaft joint 24. Therefore, the crank pedal rotational force is transmitted from the universal shaft 25 to the free shaft front wheel side sprocket 27. Then, it is transmitted to the front wheel 6 via the chain 15, the front wheel sprocket 28 and the front axle 8. The transmission of the crank pedal rotational force to both the front wheel 6 and the rear wheel 7 is a combination of the transmission of the crank pedal rotational force to the rear wheel 7 and the transmission of the crank pedal rotational force to the front wheel 6.

上記のクラッチ２０、２１には機械式のかみ合いクラッチや摩擦クラッチがあり、又電気的に動力の伝達と遮断を行う電磁クラッチ等がある。 The clutches 20 and 21 include mechanical meshing clutches and friction clutches, and electromagnetic clutches for electrically transmitting and shutting off power.

前輪駆動方式と後輪駆動方式および全輪駆動方式の３つの駆動方式を切替えるために、２つのクラッチ２０、２１に設けたクラッチ操作手段をクラッチ部からクラッチ操作をリモートコントロールする機能を持ったクラッチ操作ケーブル３０経由でハンドル１に取り付けて操作性を向上させてもよい。 A clutch having a function of remotely controlling the clutch operation means provided in the two clutches 20 and 21 from the clutch portion in order to switch between the three drive systems of the front wheel drive system, the rear wheel drive system and the all wheel drive system. It may be attached to the handle 1 via the operation cable 30 to improve operability.

自転車に備えた走行状態検出手段で走行速度や路面の勾配や路面凹凸レベル等を検出して、これらの検出値を使ってマイコン等で最適駆動方式を演算して、その最適駆動方式になるように２つのクラッチ２０、２１のクラッチ操作手段２９を電気信号で自動的に切替えるようにしてもよい。又、クランクペダルの回転力をモータ回転力で増加した回転力を上記の中間軸に伝達して、そのあと前記したクラッチの操作で後輪駆動や前輪駆動または全輪駆動にしてもよい。つまり３つの駆動方式を持った電動アシスト自転車にすることができる。 By detecting the running speed, road surface gradient, road surface unevenness level, etc. with the driving state detection means provided on the bicycle, the optimum driving method is calculated with a microcomputer etc. using these detected values so that the optimum driving method is obtained. Alternatively, the clutch operating means 29 of the two clutches 20 and 21 may be automatically switched by an electric signal. Further, the rotational force obtained by increasing the rotational force of the crank pedal by the motor rotational force may be transmitted to the intermediate shaft, and then the rear wheel drive, the front wheel drive, or the all-wheel drive may be performed by operating the clutch. That is, it can be an electrically assisted bicycle having three driving methods.

図２駆動装置Ａと図３駆動装置Ｂの違いはクランクペダル回転力の中間軸２２から先の前輪６及び後輪７へのチェーンのかけ方の違いで、駆動装置Ａの場合は自転車の右側に後輪駆動用のチェーンを配置し、左側に前輪駆動用のチェーンを配置して、駆動装置Ｂの場合は自転車の左側に後輪駆動用のチェーンを配置し、右側に前輪駆動用のチェーンを配置している。この組み合わせはこれ以外にもいろいろ考えられるが省略する。 The difference between FIG. 2 drive device A and FIG. 3 drive device B is the difference in how the chain is applied from the intermediate shaft 22 of the crank pedal rotational force to the front wheel 6 and the rear wheel 7 in the case of the drive device A. The rear wheel drive chain is disposed on the left side, the front wheel drive chain is disposed on the left side, and in the case of the driving device B, the rear wheel drive chain is disposed on the left side of the bicycle, and the front wheel drive chain is disposed on the right side. Is arranged. There are many other possible combinations, but they are omitted.

本発明に係る一実施例の自転車の全体側面図Overall side view of a bicycle according to an embodiment of the present invention. 本実施例の駆動装置ＡDriving device A of this embodiment 本実施例の駆動装置ＢDriving device B of this embodiment

符号の説明Explanation of symbols

１．．．ハンドル
２．．．ハンドルステー
３．．．サドル
４．．．フレーム
５．．．ホーク
６．．．前輪
７．．．後輪
８．．．前車軸
９．．．後車軸
１０．．．クランクペダル
１１．．．クランクスプロケット
１２．．．クランク軸
１３．．．クランク側チェーン
１４．．．前輪フレーム側チェーン
１５．．．前輪ホーク側チェーン
１６．．．後輪側チェーン
１７．．．中間クランク側スプロケット
１８．．．中間前輪側スプロケット
１９．．．中間後輪側スプロケット
２０．．．後輪側クラッチ
２１．．．前輪側クラッチ
２２．．．中間軸
２３．．．後輪スプロケット
２４．．．自在軸継手
２５．．．自在軸
２６．．．自在軸フレーム側スプロケット
２７．．．自在軸前輪側スプロケット
２８．．．前輪スプロケット
２９．．．クラッチ操作手段
３０．．．クラッチ操作ケーブル 1. . . Handle 2. . . Handle stay 3. . . Saddle4. . . Frame 5. . . Hawk 6. . . Front wheel7. . . Rear wheel 8. . . Front axle9. . . Rear axle 10. . . Crank pedal 11. . . Crank sprocket 12. . . Crankshaft 13. . . Crank side chain 14. . . Front wheel frame side chain 15. . . Front wheel hawk side chain 16. . . Rear wheel side chain 17. . . Intermediate crank side sprocket 18. . . Intermediate front wheel side sprocket 19. . . Intermediate rear wheel side sprocket 20. . . Rear wheel side clutch 21. . . Front wheel side clutch 22. . . Intermediate shaft 23. . . Rear wheel sprocket 24. . . Universal shaft coupling 25. . . Universal shaft 26. . . Free axis frame side sprocket 27. . . Swivel front wheel side sprocket 28. . . Front wheel sprocket 29. . . Clutch operating means 30. . . Clutch operation cable

Claims (2)

クランクペダルの回転力を前輪へ伝達する前輪伝達手段と前記クランクペダルの回転力を後輪へ伝達する後輪伝達手段とを持った自転車で、前記前輪伝達手段は前記クランクペダル回転力を前記前輪へ伝達と遮断ができるクラッチを持ち、前記後輪伝達手段は前記クランクペダル回転力を前記後輪へ伝達と遮断ができるクラッチを持っていることを特徴とする自転車。 A bicycle having a front wheel transmission means for transmitting the rotational force of the crank pedal to the front wheel and a rear wheel transmission means for transmitting the rotational force of the crank pedal to the rear wheel, wherein the front wheel transmission means transmits the crank pedal rotational force to the front wheel. A bicycle having a clutch capable of transmitting and blocking to the rear wheel, and the rear wheel transmitting means having a clutch capable of transmitting and blocking the crank pedal rotational force to the rear wheel. 前記前輪伝達手段の前記クラッチの伝達と遮断の操作をする操作手段と、前記後輪伝達手段の前記クラッチの伝達と遮断の操作をする操作手段とを、ハンドル部に設けたことを特徴とする請求項１に記載の自転車。 The handle portion is provided with operating means for performing transmission and disconnection of the clutch of the front wheel transmission means, and operating means for performing transmission and disconnection of the clutch of the rear wheel transmission means. The bicycle according to claim 1.
JP2005115121A 2005-04-12 2005-04-12 Drive device for bicycle Pending JP2006290208A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102079361A (en) * 2011-01-14 2011-06-01 隆鑫通用动力股份有限公司 Shift operating device of tricycle or quadruple autocycle
CN102530186A (en) * 2010-12-21 2012-07-04 天心工业股份有限公司 Speed changing handle of bicycle
CN102849172A (en) * 2011-06-30 2013-01-02 久鼎金属实业股份有限公司 Speed change mechanism of electric bicycle
CN102910252A (en) * 2011-08-01 2013-02-06 株式会社岛野 Bicycle component control device
CN103029790A (en) * 2011-10-05 2013-04-10 株式会社岛野 Apparatus for controlling multiple bicycle operating characteristics
TWI558615B (en) * 2011-10-05 2016-11-21 島野股份有限公司 Bicycle derailleur
CN106697153A (en) * 2015-11-15 2017-05-24 刘鹏军 Automatic driving steering device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102530186A (en) * 2010-12-21 2012-07-04 天心工业股份有限公司 Speed changing handle of bicycle
CN102079361A (en) * 2011-01-14 2011-06-01 隆鑫通用动力股份有限公司 Shift operating device of tricycle or quadruple autocycle
CN102849172A (en) * 2011-06-30 2013-01-02 久鼎金属实业股份有限公司 Speed change mechanism of electric bicycle
CN102910252A (en) * 2011-08-01 2013-02-06 株式会社岛野 Bicycle component control device
CN103029790A (en) * 2011-10-05 2013-04-10 株式会社岛野 Apparatus for controlling multiple bicycle operating characteristics
TWI558615B (en) * 2011-10-05 2016-11-21 島野股份有限公司 Bicycle derailleur
CN106697153A (en) * 2015-11-15 2017-05-24 刘鹏军 Automatic driving steering device

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