Patent ID: 8315773

Claim:
A brake force maintain control device for a vehicle, comprising: a pressure obtaining means for obtaining a master cylinder pressure which is generated in a master cylinder in accordance with a pressing force applied to a brake pedal of the vehicle; a stop determination means for determining whether the vehicle has stopped; a rapid pressing determination means for making a rapidly-pressed determination as to whether the vehicle is in a rapidly-pressed state based on an increase rate of the master cylinder pressure, wherein the rapidly-pressed state is a state in which the brake pedal has been further pressed rapidly; and an allowance determination means for allowing execution of a brake force maintain control when both of first and second conditions are satisfied, the first condition being that the rapid pressing determination means determines that the vehicle is in the rapidly-pressed state after the stop determination means determines that the vehicle has stopped, the second condition being that the master cylinder pressure obtained by the pressure obtaining means is larger than a predetermined value, wherein the brake force maintain control is for maintaining brake fluid pressures generated at wheel cylinders for wheels of the vehicle; wherein; the rapid pressing determination means defines a rapidly-pressed threshold so that the rapidly-pressed threshold becomes smaller as the pressing force applied to the brake pedal becomes larger; and the rapid pressing determination means determines that the vehicle is in the rapidly-pressed state when the increase rate of the master cylinder pressure is larger than the rapidly-pressed threshold.