Title:
DIFFERENTIAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/192048
Kind Code:
A1
Abstract:
Provided is a differential device for enabling a differential motion between a pair of axles, the differential device comprising: a differential gear group including a side gear capable of rotation in both a first direction and a second direction, which are opposite to each other, about a shaft, and a pinion gear in meshing engagement with the side gear so as to allow for said differential motion; a casing supporting the differential group and having a frictional surface facing the differential gear group; an output member in engagement with the side gear so as to drivingly couple the side gear and each of the axles and having a clutch surface; a casing supporting the differential group and having a frictional surface which faces the clutch surface and cooperates with the same to form a friction clutch that limits said differential motion; and a cam having a first cam surface for converting torque in said first direction to a first thrust force in the direction of the shaft and a second cam surface for converting torque in said second direction to a second thrust force in the direction of the shaft and configured so as to activate the friction clutch by the first thrust force or the second thrust force pushing the clutch surface against the frictional surface. The first cam surface and the second cam surface are each dimensioned such that the first thrust force and the second thrust force both exceed a reaction force from the meshing engagement of the side gear with the pinion gear.
Inventors:
HIROTA ISAO (JP)
KAWAI YOUSUKE (JP)
KAWAI YOUSUKE (JP)
Application Number:
PCT/JP2020/013051
Publication Date:
September 30, 2021
Filing Date:
March 24, 2020
Export Citation:
Assignee:
GKN AUTOMOTIVE LTD (GB)
GKN DRIVELINE JAPAN LTD (JP)
GKN DRIVELINE JAPAN LTD (JP)
International Classes:
F16H48/20; F16H48/08
Foreign References:
| JP2019124264A | 2019-07-25 | |||
| JP2006052860A | 2006-02-23 | |||
| JP2001289307A | 2001-10-19 |
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
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