Electrical bicycle hub
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United States of America Patent
Stats
-
Aug 21, 2012
Grant Date -
Dec 18, 2008
app pub date -
Jan 19, 2007
filing date -
Jan 23, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
Electrically motorised bicycle hub with a stationary wheel shaft which rotatingly supports a hub housing, in which is provided a rotor which can rotate around the wheel shaft and which comprises—a first part, parallel to the wheel shaft and carrying a ring of permanent magnets which cooperate with a ring of stator windings, supported by a carrier, and a second part rotatingly supported by the wheel shaft and connected to the first part by means of a transition part, and with furthermore a wheel transmission, driven by this second rotor part and which reduces the rotation speed thereof, the output thereof driving the hub housing, this wheel transmission being accommodated in the space between the stator windings and the wheel shaft. Preferably, the first rotor part is rotatingly supported on one of the hub walls opposite thereto while seals are provided between the cylindrical winding carrier and the parts opposite thereto.
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