Title:
DIFFERENTIAL GEAR
Document Type and Number:
WIPO Patent Application WO/2017/146003
Kind Code:
A1
Abstract:
A differential gear according to the present invention is provided with: a first transmission member that has a first axis line as a central axis line; an eccentric rotation member in which a hollow first output boss that can be rotated about the first axis line and an eccentric shaft part that has, as a central axis line, a second axis line that is eccentric from the first axis line are integrally coupled; a second transmission member that is opposed to the first transmission member and that is rotatably supported by the eccentric shaft part; a third transmission member that has a hollow second output boss that can be rotated about the first axis line and that is opposed to the second transmission member; a first transmission mechanism between the first and second transmission members; and a second transmission mechanism between the second and third transmission members. A spiral groove (19) that can draw lubricant oil in a transmission case (1) thereinto is provided on one of fitting surfaces between a hub (HB2) of a differential case (C) and a second drive shaft (S2) that is fittingly supported by the hub. Oil holes (47) that allow the outlet of the spiral groove to communicate with the inner circumferential side of the second transmission mechanism (T2) are provided in the third transmission member (9). Accordingly, the second transmission mechanism is efficiently lubricated while taking advantage of this device.
Inventors:
MATSUOKA SHINYA (JP)
NOGUCHI TAKANORI (JP)
SAKATA SHOHEI (JP)
NOGUCHI TAKANORI (JP)
SAKATA SHOHEI (JP)
Application Number:
PCT/JP2017/006213
Publication Date:
August 31, 2017
Filing Date:
February 20, 2017
Export Citation:
Assignee:
MUSASHI SEIMITSU KOGYO KK (JP)
International Classes:
F16H48/14; F16H57/029; F16H57/04
Domestic Patent References:
| WO2016013315A1 | 2016-01-28 |
Foreign References:
| JPH07502331A | 1995-03-09 |
Attorney, Agent or Firm:
OCHIAI & CO. (JP)
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