ELECTRICALLY-DRIVEN WHEEL-DRIVING DEVICE

WIPO Patent Application WO/2005/030518

A1

[PROBLEMS] An electrically-driven wheel-driving device where durability of rolling bearings is increased, that is reduced in size and in weight, and that improves traveling performance of a vehicle. [MEANS FOR SOLVING PROBLEMS] An electric wheel-driving device has a bearing device (2) for a wheel, a planetary speed reducer (3), a driving section (6), and a rotation-transmitting device (5) for connecting a rotating shaft (4) and an input shaft (21) installed coaxial with the rotating shaft (4) via serrations (27b). The planetary speed reducer (3) has a sun roller (17), planetary rollers (15) rolling along the inner peripheral surface of an external member (9), and carrier pins (14) for rotatably supporting the planetary rollers (15) at a hub wheel (7). The rotation-transmitting device (5) is constituted of a two-way clutch (25) and an electromagnetic clutch (26) having an electromagnet for causing an electromagnetic force that adheres an armature (35) and a rotor (37) to act. A phase of a retainer (31) relative to an interior member (30) is changed by action of the electromagnetic force, a roller (32) is engaged with the interior member (30) and an outer ring (27), and a rotating shaft (4) and an input shaft (21) are connected and cutoff in both rotating directions.

IWAMOTO KENICHI (JP)
NOZAKI TAKASHI (JP)
NAKAMURA TOKUMASA (JP)
YAMASAKI TATSUYA (JP)

PCT/JP2004/012049

April 07, 2005

August 23, 2004

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NTN TOYO BEARING CO LTD (JP)
IWAMOTO KENICHI (JP)
NOZAKI TAKASHI (JP)
NAKAMURA TOKUMASA (JP)
YAMASAKI TATSUYA (JP)

B60K7/00; B60K17/04; (IPC1-7): B60K7/00

JP2001315534A	2001-11-13
JP2003032806A	2003-01-31
JP3440082B2	2003-08-25

Koshikawa, Takao (111-2 Itayamachi Hamamatsu-sh, Shizuoka 91, JP)

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