Title:
DIFFERENTIAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/090576
Kind Code:
A1
Abstract:
In this differential device provided with a pair of side gears, a plurality of pinion gears, and a pinion shaft, the pinion shaft (30) is provided with: a plurality of shaft sections (31) that rotatably fit and support the plurality of respective pinion gears (40); and an annular support section (32) that connects the plurality of shaft sections (31) to each other. An annular recessed section (32d) is formed in the inner peripheral surface of the support section (32), the pinion shaft (30) has oil guide sections (30h, 35) that guide the lubricating oil in the recessed section (32d) toward the fitted sections between the shaft section (31) and the pinion gears (40), and an inner end section (20bi) of at least one side gear (20) extends to an inner space of the support section (32) and is positioned within the width of the recessed section (32d) in the axial direction of the rotary shafts (S1, S2). Accordingly, the lubricating oil flowing out from the inner end section of the side gear is efficiently collected inside the recessed section of the inner periphery of the support section in the pinion shaft, and can be sufficiently supplied to rotary sliding sections between the pinion gears and the shaft section.
Inventors:
ODA HIROHISA (JP)
MORI HIROYUKI (JP)
MORI HIROYUKI (JP)
Application Number:
PCT/JP2019/041495
Publication Date:
May 07, 2020
Filing Date:
October 23, 2019
Export Citation:
Assignee:
MUSASHI SEIMITSU KOGYO KK (JP)
International Classes:
F16H48/08; F16H57/04
Foreign References:
| US5989143A | 1999-11-23 | |||
| JPS61142943U | 1986-09-03 |
Attorney, Agent or Firm:
OCHIAI & CO. (JP)
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