Title:
STRAIN ELEMENT, STRAIN ELEMENT MANUFACTURING METHOD, AND PHYSICAL QUANTITY MEASURING SENSOR
Document Type and Number:
WIPO Patent Application WO/2019/239938
Kind Code:
A1
Abstract:
Provided is a strain element (10) comprising a frame part (11) and a central part (12) that are connected by arm parts (20)-(22), wherein masking is applied to portions of the strain element (10) other than the arm parts (20)-(22) where a strain gauge (A1) or the like is to be disposed and peening is performed to form a compressive residual stress layer on peripheral surfaces of the arm parts (20)-(22). When the strain element (10) bears a load caused by an external force, the arm parts (20)-(22) undergo elastic deformation but the compressive residual stress layer formed thereon makes it less likely for a fatigue fracture to occur in the arm parts (20)-(22). If peening is performed by shooting a shot material, then the surface roughness of the arm parts (20)-(22) increases, the adhesion of the strain gauge improves for improved detection accuracy, and stable measurement can be ensured.
Inventors:
NAGASAKA MASAHIKO (JP)
MAKINO HIROYASU (JP)
MAKINO HIROYASU (JP)
Application Number:
PCT/JP2019/021940
Publication Date:
December 19, 2019
Filing Date:
June 03, 2019
Export Citation:
Assignee:
SINTOKOGIO LTD (JP)
International Classes:
G01L1/22; G01L5/16
Foreign References:
| JPH06180257A | 1994-06-28 | |||
| JPS57171470A | 1982-10-22 | |||
| JPH01213532A | 1989-08-28 | |||
| JP2016070673A | 2016-05-09 | |||
| JPS62274230A | 1987-11-28 | |||
| JPH01223321A | 1989-09-06 | |||
| CN102636301A | 2012-08-15 |
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
Download PDF: