Crank component of bicycle

Crank component of bicycle

  • CN 102,381,425 B
  • Filed: 06/30/2011
  • Issued: 02/03/2016
  • Est. Priority Date: 08/30/2010
  • Status: Active Grant
First Claim
Patent Images

1. a crank component of bicycle, comprising:

  • Crank arm, it comprises leading flank and trailing flank, described crank arm has crank shaft installation portion, described crank shaft installation portion has the crank shaft limited by shaft coupling structure and receives opening, described shaft coupling structure has the second axial end edge of the first axial end edge of the described leading flank of contiguous described crank arm and the described trailing flank of contiguous described crank armDescribed shaft coupling structure at least comprisesMultiple total length spline, its axial direction receiving opening along described crank shaft extends to described second axial end edge completely from described first axial end edge;

    At least one short spline, it axially extends, and there is the truncated ends of a location of contiguous described first axial end edge and described second axial end edge, so that at least one short spline described does not extend to one of described first axial end edge and described second axial end edge completely from another of described first axial end edge and described second axial end edge.

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