Title:
DIFFERENTIAL GEAR DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/187227
Kind Code:
A1
Abstract:
[Problem] The purpose of the present invention is to provide a differential gear device in which a ring gear is fixedly fastened to a differential case by means of a plurality of bolts, and loosening of the bolts can be efficiently prevented. [Solution] The present invention is provided with an external tooth-type ring gear and a differential case that integrally rotates with the ring gear, wherein: an attachment part that is integrally formed in a flange shape is formed along the circumferential direction of a rotary shaft of the ring gear in the differential case; the ring gear is fixedly fastened to the attachment part by means of a plurality of bolts; the plurality of bolts are arranged so as to be aligned in the circumferential direction of the rotary shaft; and each of the bolts is arranged so that the arrangement density of the bolts is low at a portion in which the change in the stiffness of the differential case is small, and high at a portion in which the change in the stiffness is large.
Inventors:
ITO KOUHEI (JP)
Application Number:
PCT/JP2018/035300
Publication Date:
October 03, 2019
Filing Date:
September 25, 2018
Export Citation:
Assignee:
AISIN AW CO (JP)
International Classes:
F16H48/40
Foreign References:
| JP2012067822A | 2012-04-05 | |||
| JP2010265924A | 2010-11-25 | |||
| US6976929B1 | 2005-12-20 |
Attorney, Agent or Firm:
SUDO Yutaka et al. (JP)
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