公开(公告)号：US11827199B2

公开(公告)日：2023-11-28

申请号：US16759381

申请日：2018-11-06

Applicant: ADVICS CO., LTD.

Inventor： Tatsushi Kobayashi ,  Tomotaka Asano ,  Yasuhito Ishida ,  Ryosuke Endo ,  Takayuki Yamamoto

IPC: B60T8/40 ,  B60T8/171 ,  B60T13/68 ,  B60T17/22 ,  B60T7/04

CPC classification number: B60T8/171 ,  B60T8/409 ,  B60T13/686 ,  B60T17/221 ,  B60T7/042 ,  B60T2270/82 ,  B60T2270/88

Abstract: A vehicle brake device includes a stroke simulator, a stroke sensor, and a brake start determination unit. The stroke simulator includes a cylinder, a piston, an orifice, and a pressure sensor. The cylinder defines a liquid pressure chamber to which a brake liquid is supplied via a fluid path. The piston slides in the cylinder by the brake liquid supplied to the liquid pressure chamber. The orifice is formed in the fluid path. The pressure sensor detects a reaction pressure. The stroke sensor is configured to detect the stroke. The brake start determination unit determines an operation of the brake operation member has been started in a case where the reaction pressure detected by the pressure sensor becomes equal to or greater than a first threshold value and the stroke detected by the stroke sensor becomes equal to or greater than a second threshold value.