Driving device for a bicycle

Details Driving device for a bicycle Driving device for a bicycle

1996-07-24

1998-07-21

Wright, Dirk

Planetary gear transmission systems or components

Electric or magnetic drive or control

B62M 2302, B60K 700

Patent

active

057827168

ABSTRACT:
A motor-driven hub for a bicycle includes a hub shaft, a hub body rotatably mounted about the hub shaft, a drive member coaxially mounted with the hub shaft, a motor coupled to the drive member for rotating the drive member, and a one-way clutch disposed in a transmission path between the drive member and the hub body for transmitting rotation of the drive member to the hub body only in one direction. A gear reduction mechanism in the form of a planetary gear unit may be mounted in the transmission path between the drive member and the hub body so that the hub body rotates slower than the drive member. The motor may be mounted outside the hub or inside the hub. When mounted inside the hub, the motor may be mounted coaxially about the hub shaft so that the center of gravity of the motor lies within the hub along the axis of the hub.

REFERENCES:
patent: 4346777 (1982-08-01), Restelli
patent: 4406340 (1983-09-01), Gennaux
patent: 4930590 (1990-06-01), Love et al.
patent: 5246082 (1993-09-01), Alber
patent: 5272938 (1993-12-01), Hsu et al.
patent: 5450915 (1995-09-01), Li
patent: 5524726 (1996-06-01), Wright, Jr.
patent: 5581136 (1996-12-01), Li
patent: 5600191 (1997-02-01), Yang
patent: 5633544 (1997-05-01), Toida et al.
"Patent Abstracts of Japan," vol. 95, No. 9, Oct. 31, 1995; English abstract of JP 7-154941, published Jun. 16, 1995.
European search report for EP 96305416.8, dated Aug. 13, 1997.

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