PROBLEM TO BE SOLVED: To provide an actuation device for a control cable for a bicycle gearshift that allows the reliability of the upward shifting to be ensured.SOLUTION: An actuation device 10 comprises: (a) a cable-winding bush 22 angularly mobile about a main axis A of the actuation device; (b) an indexing bush 26 coaxial with the cable-winding bush and associated with it to removably hold the cable-winding bush in predetermined angular positions, angularly spaced apart from each other at predetermined indexing angles α; and (c) a maneuvering mechanism 30 operative on the cable-winding bush to rotate it in a first angular direction R about the main axis A so as to obtain an upward shifting. Between the cable-winding bush and the indexing bush is provided a coupling 40 with a predetermined circumferential clearance 42 corresponding to a predetermined gearshift extra-stroke angle β.SELECTED DRAWING: Figure 8

    【課題】アップシフト動作の信頼性を確実にする自転車ギアシフト装置に用いる制御ケーブル用作動装置の提供。【解決手段】作動装置10は、(a)作動装置の主軸心Aを中心として角度方向に可動するケーブル巻取ブッシュ22と、(b)該巻取ブッシュと同軸で、かつ、該巻取ブッシュを互いに角度方向に所定のインデックス動作角度αで離間した所定の角度方向位置に着脱自在に保持するように該巻取ブッシュと連動するインデックス動作ブッシュ26と、(c)該巻取ブッシュを、主軸心Aを中心として第1の角度方向Rに回転させてアップシフト動作を実現するように該巻取ブッシュに対して作用可能である操作機構30と、を備え、かつ、該巻取ブッシュと該動作ブッシュとの間に、所定のギアシフト動作過剰ストローク角度βに対応する周方向に所定のクリアランス42を有するカップリング40を設ける。【選択図】図8


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    Title :

    ACTUATION DEVICE FOR A CONTROL CABLE FOR A BICYCLE GEARSHIFT


    Additional title:

    自転車のギアシフト装置に用いられる制御ケーブル用の作動装置


    Contributors:

    Publication date :

    2017-01-19


    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



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