IN-WHEEL MOTOR DRIVING DEVICE

WIPO Patent Application WO/2015/060135

A1

An in-wheel motor driving device (21) wherein a reduction gear input shaft (25) having eccentric parts (25a, 25b) is rotationally driven by a motor section (A), and the rotation of the reduction gear input shaft (25) is reduced in a reduction section (B) and then transmitted to a reduction gear output shaft (28). The reduction section (B) is equipped with: the reduction gear input shaft (25); curve plates (26a, 26b) that undergo orbital motion centered around the axis of rotation of the reduction gear input shaft (25) in conjunction with the rotation thereof; outer pins (27) that cause these curve plates (26a, 26b) to auto-rotate; and a motion conversion mechanism that inserts inner pins (31) which are held on the reduction gear output shaft (28) into through-holes (30a) in the curve plates (26a, 26b) and engage the curve plates (26a, 26b) via needle roller bearings (31a), thereby converting the auto-rotational movement of the curve plates (26a, 26b) to rotational movement around the axis of rotation of the reduction gear input shaft (25), with this movement being transmitted to the reduction gear output shaft (28). A crowning process is performed on the outer-diameter surface (38b) of an outer ring (38) forming part of the needle roller bearings (31a).

SUZUKI MINORU (JP)
UOZUMI TOMOHISA (JP)

PCT/JP2014/077045

April 30, 2015

October 09, 2014

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NTN TOYO BEARING CO LTD (JP)
SUZUKI MINORU (JP)
UOZUMI TOMOHISA (JP)

F16H1/32; B60K7/00; F16C19/26; F16C33/64

JP2010038357A	2010-02-18
JPH05223142A	1993-08-31
JP2000249200A	2000-09-12
JP2009262616A	2009-11-12
JP2010032038A	2010-02-12

SHIROMURA Kunihiko et al. (JP)
Kunihiko Shiromura (JP)

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