To provide a device for actuating a bicycle front derailleur, which accurately shifts a transmission chain between crown gears of the largest and smallest diameters when down shifting from the crown gear of the largest diameter in a crank set.SOLUTION: A device for actuating a front derailleur, comprises an indexer 13 for displacing a transmission chain between a first toothed wheel 201 and a second toothed wheel 202 which is smaller in diameter than the first toothed wheel. The indexer has a first low-side stop position P1 and a second low-side stop position P2 when the transmission chain is engaged with the second toothed wheel, and the second low-side stop position P2 is configured such that the front derailleur is centered on the second toothed wheel. The indexer has a first upper-side stop position P4 corresponding to the engagement of the transmission chain with the first toothed wheel. The device 10 further comprises a control lever 14 which is operable on the indexer to switch the indexer between the first low-side stop position P1, the second low-side stop position P2 and the first upper-side stop position P4. With a single actuation of the control lever, the indexer is switched from the first upper-side stop position P4 to the second low-side stop position P2.SELECTED DRAWING: Figure 9

    【課題】クランクセット内の最大径クラウンギヤからのダウンシフト時に、最大径と最小径のクラウンギヤ間で伝動チェーンの正確な移行を行う自転車フロントディレイラ作動装置の提供。【解決手段】第1歯車201とそれよりも小径の第2歯車202との間で、伝動チェーン変位のために、フロントディレイラ作動装置はインデクサ13を備え、インデクサは伝動チェーンが第2歯車に係合時の第1ロー側停止位置P1及び第2ロー側停止位置P2を有し、P2はフロントディレイラが第2歯車上センタに配置するように構成されている。インデクサは、第1歯車との伝動チェーンの係合に対応する第1のアッパ側停止位置P4を有する。装置10は、さらにインデクサをP1、P2、P4間で切替えるようにインデクサに対して動作可能な制御レバー14を備える。制御レバーの単一作動によりインデクサがP4からP2に切替えられる。【選択図】図9


    Access

    Download


    Export, share and cite



    Title :

    DEVICE FOR ACTUATING FRONT DERAILLEUR OF BICYCLE


    Additional title:

    自転車のフロントディレイラ作動装置


    Contributors:

    Publication date :

    2019-03-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer



    DEVICE FOR ACTUATING FRONT DERAILLEUR OF BICYCLE

    MINTO MARCO / MARANGON CHRISTIAN | European Patent Office | 2018

    Free access

    DEVICE FOR ACTUATING THE FRONT DERAILLEUR OF A BICYCLE

    MINTO MARCO / MARANGON CHRISTIAN | European Patent Office | 2018

    Free access

    DEVICE FOR ACTUATING THE FRONT DERAILLEUR OF A BICYCLE

    MINTO MARCO / MARANGON CHRISTIAN | European Patent Office | 2019

    Free access

    DEVICE FOR ACTUATING A FRONT DERAILLEUR OF A BICYCLE

    MINTO MARCO / MARANGON CHRISTIAN | European Patent Office | 2019

    Free access

    DEVICE FOR ACTUATING A FRONT DERAILLEUR OF A BICYCLE

    MINTO MARCO / MARANGON CHRISTIAN | European Patent Office | 2021

    Free access