REDUCTION DIFFERENTIAL GEAR FOR ELECTRIC VEHICLE

WIPO Patent Application WO/2012/014634

A1

In a reduction differential gear for an electric vehicle, which consists of a planetary gear type reduction gear and a differential gear, the invention addresses the problem of, while reducing the device size and weight by employing an oil-bath lubrication as a lubrication means to increase a traveling distance per charge, sufficiently distributing a lubricant to each part of the gear without requiring to add a special component as a scratching-up means. The reduction differential gear for an electric vehicle comprises a combination of an electric motor (11), a planetary gear type reduction gear (12), a differential gear (13), and a lubrication means (14) and employs an oil bath lubrication as the lubrication means (14). In the reduction differential gear for an electric vehicle, the respective carriers (32, 54) of the reduction gear (12) and the differential gear (13) have rotational radii formed to have sizes less than or equal to an oil level and are configured to have scratching-up protrusions (46) on the outer circumferential surfaces thereof.

JP2007515603	Electronic locking differential with bulkhead connector
JP2023148130	VEHICLE DRIVE TRANSMISSION DEVICE
JP4539531	Vehicle drive

FUKAMI RINO (JP)
ABE KATSUFUMI (JP)

PCT/JP2011/065295

February 02, 2012

July 04, 2011

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NTN TOYO BEARING CO LTD (JP)
FUKAMI RINO (JP)
ABE KATSUFUMI (JP)

F16H48/10; F16H1/28

JPH06323404A	1994-11-25
JPH08145151A	1996-06-04
JPH0842656A	1996-02-16
JP2010014240A	2010-01-21
JPH0979353A	1997-03-25
JP2000240771A	2000-09-05
JP2009127842A	2009-06-11

TORII Kazuhisa et al. (JP)
Kazuhisa Torii (JP)

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