Aisin Seiki Kabushiki Kaisha

Advics Co., Ltd.

Minoru Watanabe

Nobuyuki Hirota

Kaoru Tsubouchi

Akihiko Miwa

Yoichi Terasaki

Yoji Inoue

Yu Furuta

Eri Tanimoto

A valve mechanism of this negative pressure type booster device has: a negative pressure valve seat provided on a valve body; an atmospheric valve seat provided on a plunger; and a valve part provided with a negative pressure valve section constituting a negative pressure valve together with the negative pressure valve seat and an atmospheric valve section constituting an atmospheric valve together with the atmospheric valve seat. The valve mechanism is provided with a tilting part which is provided on at least one of the valve body and the valve part and tilts the atmospheric valve section relative to a first plane formed when the negative pressure valve section and the negative pressure valve seat are brought into contact with each other to put the negative pressure valve in a closed state.

Negative pressure-type booster device

A vacuum type brake booster for a vehicle is capable of compensating for inadequacy of the force with which a driver steps on a brake pedal during emergency braking whereby a reaction force corresponding to the output of the booster is applied to the brake pedal. A good brake pedal operation feeling is thereby obtained in both the outward and return strokes of the brake pedal and during when the booster has been switched to normal braking and when it has been switched to emergency braking.

Vacuum type brake booster for vehicle

Growing community of inventors

Nisshin, Japan

Minoru Watanabe