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公开(公告)号:US10300893B2
公开(公告)日:2019-05-28
申请号:US15315012
申请日:2015-07-14
Applicant: ADVICS CO., LTD.
Inventor: Yuta Miwa , Tetsuya Honda
IPC: F16F9/38 , B60T7/04 , F16J3/04 , F16J15/52 , F16F1/12 , B60T17/00 , F16F1/02 , B60T7/06 , B60T11/18 , B60T17/22 , 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.