Title:
FASTENING STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2019/150464
Kind Code:
A1
Abstract:
Provided is a fastening structure 105 formed by linking, using a bolt, a pair of fastening members 105A that are joined to each other, wherein the fastening structure 105 is configured as follows: the fastening members 105A are made of iron and steel; the surface hardness at areas aside from a junction surface Sa is 50 HRC or greater on the Rockwell hardness scale; the hardness of the junction surface Sa is 30 HRC to less than 50 HRC on the Rockwell hardness scale; and an arithmetic average roughness Ra of the junction surface Sa is 0.2 µm to 0.5 µm. Due to this configuration, bending fatigue strength is ensured while manufacturing costs are suppressed, and secondary damage from abrasion powder produced by fretting is prevented.
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Inventors:
SUGIMOTO TSUYOSHI (JP)
HAMADA TAKAHIRO (JP)
HAMADA TAKAHIRO (JP)
Application Number:
PCT/JP2018/003091
Publication Date:
August 08, 2019
Filing Date:
January 31, 2018
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
F16C11/04; C23C8/20; F02B75/04; F02B75/32; F16C17/02
Foreign References:
| JP2005147376A | 2005-06-09 | |||
| JP2006063995A | 2006-03-09 | |||
| JP2013096429A | 2013-05-20 | |||
| JPH0642526A | 1994-02-15 | |||
| JP2007197770A | 2007-08-09 | |||
| JPS5989720A | 1984-05-24 | |||
| JP2003328078A | 2003-11-19 |
Other References:
See also references of EP 3748176A4
Attorney, Agent or Firm:
MATOBA, Motonori (JP)
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