公开(公告)号：US20170190323A1

公开(公告)日：2017-07-06

申请号：US15315012

申请日：2015-07-14

Applicant: ADVICS CO., LTD.

Inventor： Yuta MIWA ,  Tetsuya HONDA

IPC: B60T7/04 ,  F16F1/02 ,  B60T17/00

CPC classification number: B60T7/04 ,  B60T7/06 ,  B60T11/18 ,  B60T17/00 ,  B60T17/221 ,  F16F1/02 ,  F16F1/12 ,  F16J3/04 ,  F16J3/042 ,  F16J15/52 ,  G05G1/30

Abstract: A brake boosting device wherein a vibration control member is provided to an end part of a return coil spring that is arranged inside a vehicle chamber and that is interposed between a booster body and an input rod. The vibration control member has provided thereto: a seat part that suppresses the vibration of the return coil spring and that is between the end part of the return coil spring and a support part that supports the end part; and a guide part that is provided integrally with the seat part and that fits with the inner periphery of the end part of the return coil spring at a prescribed radial tightening allowance.