公开(公告)号：US20170152907A1

公开(公告)日：2017-06-01

申请号：US15320187

申请日：2015-06-19

Applicant: NHK SPRING CO., LTD.

Inventor： Nobuharu KATO ,  Kengo TSURUGAI ,  Masafumi MORIMOTO

IPC: F16F1/06 ,  F16F1/04 ,  F16F1/12

Abstract: Provided is a coiled spring assembly having a coiled spring and a seat for the coiled spring, in which the coiled spring has an end turn formed up to a first turn with a reduced diameter and a transition portion with a diameter gradually increasing from the end turn to a body portion, the seat has a seat portion, a mounting shaft portion, and an enlarged diameter portion, the mounting shaft portion has an axial length defining a gap or a zero-gap between the enlarged diameter portion and the end turn in a free state in which the end turn is fitted to the mounting shaft portion and the bearing surface of the end turn is in contact with the receiving surface of the seat portion, and the transition portion circumvents the enlarged diameter portion while the bearing surface is in contact with the receiving surface.