Title:
コイルばね、懸架装置およびコイルばねの製造方法
Document Type and Number:
Japanese Patent JP7358607
Kind Code:
B2
Abstract:
According to an embodiment, a coil spring is formed of a wire which is helically wound, and includes an end turn portion and an effective portion, and a surface of the wire in the end turn portion includes an area which is softer than a surface of the wire in the effective portion.
Inventors:
Hideki Okada
Yuichiro Yamauchi
Rei Tanaka
Ken Suzuki
Kosuke Shibairi
Yuichiro Yamauchi
Rei Tanaka
Ken Suzuki
Kosuke Shibairi
Application Number:
JP2022206892A
Publication Date:
October 10, 2023
Filing Date:
December 23, 2022
Export Citation:
Assignee:
Nippon Jojo Co., Ltd.
International Classes:
F16F1/06; B21F35/00; C21D9/02; F16F1/02; F16F1/12; F16F9/32
Domestic Patent References:
| JP2019124363A | ||||
| JP9264360A | ||||
| JP59047137U | ||||
| JP2015190538A | ||||
| JP2014122652A | ||||
| JP2000283201A | ||||
| JP6587993B2 | ||||
| JP2019007081A | ||||
| JP2010133558A |
Foreign References:
| WO2013099821A1 | ||||
| WO2020026716A1 |
Attorney, Agent or Firm:
Suzue International Patent Office