公开(公告)号：US20170313149A1

公开(公告)日：2017-11-02

申请号：US15528047

申请日：2015-11-10

Applicant: NHK SPRING CO., LTD.

Inventor： Hidenori CHIHARA ,  Hiroto TSUJI ,  Shinichiro KUWATSUKA

IPC: B60G11/04 ,  C21D9/02 ,  F16F1/26 ,  B21D19/12 ,  B21D53/88 ,  F16F3/02

Abstract: A leaf spring device includes a main leaf made of a steel plate including an elastic section configured to generate elastic force when bent; and an eye section formed in an end portion of the elastic section, the elastic section and the eye section being tempered. There is also provided a method for manufacturing the leaf spring device. The eye section is formed by rolling the end of the elastic section into a circular form. The eye section is tempered at a higher temperature than the elastic section.

公开(公告)号：US20190078636A1

公开(公告)日：2019-03-14

申请号：US16085193

申请日：2017-03-06

Applicant: NHK SPRING CO., LTD.

Inventor： Jyunichi YANO ,  Hidenori CHIHARA ,  Yuusuke TANAKA

IPC: F16F1/20 ,  B60G9/04 ,  B60G11/04 ,  F16F1/26

Abstract: This space maintaining member is provided between leaf springs, and has a main portion and seal portions that are provided on the ends of the main portion and that are fitted to adjacent leaf springs so as to seal the same from the external space.

公开(公告)号：US20190078637A1

公开(公告)日：2019-03-14

申请号：US16085268

申请日：2017-03-07

Applicant: NHK SPRING CO., LTD.

Inventor： Hidenori CHIHARA ,  Manabu TSUCHIDA

IPC: F16F1/20 ,  B60G11/04 ,  F16F1/26

Abstract: A gap retaining member is provided between leaf springs and has a surface along a curved outer surface of a center portion of an adjacent leaf spring.