Hub transmission for a bicycle

Hub transmission for a bicycle

  • CN 101,332,853 A
  • Filed: 12/04/2007
  • Published: 12/31/2008
  • Est. Priority Date: 06/29/2007
  • Status: Active Grant
First Claim
Patent Images

1. hub gear that is used for bicycle comprises:

  • Hub spindle (1);

    The actuator (2) that supports rotationally by hub spindle (1);

    The hub shell (3) that supports rotationally by hub spindle (1);

    Poewr transmission mechanism (4) is arranged between actuator (2) and the hub shell (3), by a plurality of power transfer path turning effort is passed to hub shell (3) from actuator (2);

    WithSpeed-changing mechanism (5) is used for selecting a power transfer path from a plurality of power transfer path;

    Wherein Poewr transmission mechanism (4) comprises a plurality of sun and planet gears (6,7,8,9), it is characterized in that;

    The planetary gear carrier of downstream planetary gear mechanism (31) meshes with the planetary wheel (43) of upstream planetary gear mechanism.

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