Title:
ビード部の曲げ剛性測定方法
Document Type and Number:
Japanese Patent JP6753308
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for measuring the flexural rigidity of a bead part, capable of digitizing the flexural rigidity of the bead part to improve the accuracy of evaluation of rim assemblability.SOLUTION: A method for measuring the flexural rigidity of a bead part comprises: the step K1 of maintaining two positions Px facing each other in a first tire diameter direction on the inner surface Si of an upper bead part Tb by a bead support plate 7 and the step K2 of gradually loading a load W at two positions Py facing each other in a second tire diameter direction on the outer surface So of the upper side bead part Tb by a load action plate 8 to displace the two positions. The flexural rigidity of the bead part is required on the basis of the measurement data of the load W and the amount δ of displacement.SELECTED DRAWING: Figure 3
Inventors:
Kenji Murata
Application Number:
JP2016256343A
Publication Date:
September 09, 2020
Filing Date:
December 28, 2016
Export Citation:
Assignee:
Sumitomo Rubber Industries, Ltd.
International Classes:
G01N3/20; G01M17/02
Domestic Patent References:
| JP2006062554A | ||||
| JP2014122814A | ||||
| JP2008190981A | ||||
| JP2015151111A | ||||
| JP2002350309A |
Foreign References:
| US6601446 |
Attorney, Agent or Firm:
Sumitomo Shintaro
Ura Shigego
Jun Naemura
Yukinobu Ishihara
Ura Shigego
Jun Naemura
Yukinobu Ishihara