Vehicle brake device and its reservoir

A vehicular braking apparatus comprising:

• a shut-off valve that shuts off, as needed, a flow of a working liquid from a wheel cylinder to a master cylinder;
• a pressure increase-decrease control valve that increases and decreases a pressure in the wheel cylinder;
• a reservoir that receives and stores in a reservoir chamber the working liquid from the wheel cylinder when the pressure increase-decrease control valve is in a pressure decrease position;
• pressurizing supply means for sucking in and pressurizing the working liquid from the reservoir chamber and supplying the working liquid to the wheel cylinder via the pressure increase-decrease control valve when the pressure increase-decrease control valve is in a pressure increase position;
• and
• a communication control valve that controls communication between the master cylinder and the reservoir chamber, wherein the communication control valve is a normally-closed valve and is opened by a suction pressure of the pressurizing supply means.

A reservoir provided in a vehicular braking apparatus comprising:

• a shut-off valve that shuts off, as needed, a flow of a working liquid from a wheel cylinder to a master cylinder;
• a pressure increase-decrease control valve that increases and decreases a pressure in the wheel cylinder;
• pressurizing supply means for pressurizing the working liquid and supplying the working liquid to the wheel cylinder via the pressure increase-decrease control valve when the pressure increase-decrease control valve is in a pressure increase position, the reservoir receiving and storing in a reservoir chamber the working liquid from the wheel cylinder when the pressure increase-decrease control valve is in a pressure decrease position, the reservoir chamber communicating with a suction side of the pressurizing supply means;
• and
• a communication control valve that controls communication between the master cylinder and the reservoir chamber, the communication control valve being a normally-closed valve and being opened by a suction pressure of the pressurizing supply means.