Bicycle eccentric pulley wheel
OwnerHuang-Kun Mainventor
Life of this patent
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Abstract
A bicycle eccentric pulley wheel having a chainring, a bearing, and at least one side cover. The chainring is rotatably mounted on the bearing, and the side cover is fixed to the bearing. The side cover is a hollow disk and includes an annular flange formed in an axial direction. The inner side of the annular flange includes a raised portion facing towards a center. The raised portion includes an eccentric hole, which is offset from the center defined by the side cover.
Claims9
A bicycle eccentric pulley wheel, characterized in that the bicycle eccentric wheel comprises a chainring, a bearing, and at least one side cover, wherein the chainring is rotatably mounted on the bearing, and the at least one side cover is fixed on the bearing, wherein the at least one side cover is a hollow disk comprising an annular flange extended longitudinally, an inner side of the annular flange comprises a raised portion facing towards a center of the at least one side cover, the raised portion has an eccentric hole, and the eccentric hole offsets from the center of the at least one side cover, wherein
- a distance from the eccentric hole to the center of the at least one side cover is between 0.1 to 0.8 times of a distance from an outer perimeter of the annular flange to the center of the at least one side cover, and
- at least one engaging portion protrudes longitudinally along a part of the at least one side cover, the bicycle eccentric pulley wheel allows a derailleur cage to be assembled with the chainring having a radius greater than a distance from the center to connected ends of the derailleur cage.
Dependencies are inferred from the claim text.