In-wheel motor drive device

Patent metadata

Field	Value
Publication number	US-10464384-B2
Application number	US-201716090600-A
Country	US
Kind code	B2
Filing date	Mar 9, 2017
Priority date	Apr 6, 2016
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

An in-wheel motor drive device includes a motor unit having a plurality of power line connecting portions ( 91, 91, 91 ), and a plurality of bendable power lines ( 93, 93, 93 ) whose one ends connect with the power line connecting portions and whose other ends extend to a vehicle body outside a casing and supplies electric power to the motor unit from the vehicle body, and which in-wheel motor drive device can be steered about a steering axis (K) intersecting with a spring sheet ( 79 c ) of a shock absorber. Furthermore, viewing from the steering axial direction, the plurality of power line connecting portions is disposed overlapping a spring sheet.

First claim

The invention claimed is:

1. An in-wheel motor drive device comprising:
a wheel hub coupled to a wheel;
a motor unit having a motor rotating shaft adapted to drive the wheel hub, a casing serving as a contour, and a plurality of power line connecting portions provided on the casing; and
a plurality of bendable power lines whose one ends connect to the power line connecting portion and whose other ends extend to a vehicle body outside the casing, to supply electric power from the vehicle body to the motor unit,
wherein the in-wheel motor drive device
is connected to a lower end of a strut extending in a vertical direction,
is steerable about a steering axis extending along the strut, and
wherein the plurality of power line connecting portions is disposed overlapping a spring sheet of a shock absorber provided in the strut when viewed in a steering axial direction.

2. The in-wheel motor drive device according to claim 1 , wherein at least two power line connecting portions are disposed overlapping each other when viewed from the steering axial direction.

3. The in-wheel motor drive device according to claim 1 , wherein
the spring sheet includes an upper spring sheet and a lower spring sheet that are disposed with a space provided therebetween vertically, and
the plurality of power line connecting portions are disposed overlapping the lower spring sheet when viewed in the steering axial direction.

4. The in-wheel motor drive device according to claim 1 , wherein
the plurality of power line connecting portions is disposed shifted in a vehicle front-rear direction from the steering axis, and
one end of the power line extending from the power line connecting portion extends in a direction approaching the steering axis.

5. The in-wheel motor drive device according to claim 1 , wherein the power line connecting portion is configured of a through-hole formed in the casing, and a sleeve surrounding an outer periphery of an end of the power line and adapted to be inserted into and fixed to the through-hole.

Assignees

• Ntn Toyo Bearing Co Ltd

Inventors

• Ishikawa Takanori
• Tamura Shiro

Classifications

• B60K7/00

  Disposition of motor in, or adjacent to, traction wheel · CPC title

• B60Y2410/115

  Electric wiring; Electric connectors · CPC title

• B60G3/28 Primary

  at least one of the arms itself being resilient, e.g. leaf spring {(B60G7/003 takes precedence)} · CPC title

• B60K2007/0092

  the motor axle being coaxial to the wheel axle · CPC title

• B60K7/0007 Primary

  the motor being electric · CPC title