Title:
MOTOR-DRIVEN WHEEL DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2005/080113
Kind Code:
A1
Abstract:
[PROBLEMS] To provide a motor-driven wheel drive device in which the durability of a wheel bearing is increased, the weight and size thereof are reduced, and the disassembly and reassembly thereof is taken into account. [MEANS FOR SOLVING PROBLEMS] This motor-driven wheel drive device comprises a drive part (4) having an electric motor (M) driving a planetary speed reduction gear (2) installed in the wheel bearing (1) and a rotating member (17). The wheel bearing (1) further comprises a hub wheel (6) on which an inside rolling surface (6a) is formed, an inner ring (7) press-fitted to the hub wheel, an outer member (8) in which double rows of outside rolling surfaces (8a) are formed, and rolling elements (9). The planetary speed reduction gear (2) further comprises a sun gear (3) formed in a rotating member (17), a plurality of planetary gears (12) disposed between the outer member (8) and the sun gear (3), and carrier pins (14) pivotally supporting these planetary gears on a connection shaft (13). The drive part (4) further comprises the electric motor (M) releasably disposed on the outer member (8) and the rotating member (17). The connection shaft (13) is connected to the hub wheel (6) through a serration, and the rotation of the electric motor (M) is transmitted to the hub wheel (6) through the rotating member (17) and the planetary speed reduction gear (2).
Inventors:
SAITO TSUYOSHI (JP)
IWAMOTO KENICHI (JP)
IWAMOTO KENICHI (JP)
Application Number:
PCT/JP2005/000454
Publication Date:
September 01, 2005
Filing Date:
January 17, 2005
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
SAITO TSUYOSHI (JP)
IWAMOTO KENICHI (JP)
SAITO TSUYOSHI (JP)
IWAMOTO KENICHI (JP)
International Classes:
B60K7/00; B60K17/04; B60T1/06; F16D63/00; F16D65/02; F16D65/18; F16H37/04; H02K7/116; H02K21/14; H02K7/102; H02K7/14; (IPC1-7): B60K7/00
Foreign References:
| JP2001315534A | 2001-11-13 | |||
| JP2004052787A | 2004-02-19 | |||
| JPH05278476A | 1993-10-26 | |||
| JP2001173762A | 2001-06-26 | |||
| JP2001032914A | 2001-02-06 | |||
| JP2001032888A | 2001-02-06 | |||
| JP2001315534A | 2001-11-13 | |||
| JPH0781436A | 1995-03-28 |
Other References:
See also references of EP 1719656A4
Attorney, Agent or Firm:
Koshikawa, Takao (111-2 Itayamachi Hamamatsu-sh, Shizuoka 91, JP)
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