Patent ID: 8579066

Claim:
A vehicle seat belt device comprising: a webbing configured to retain a vehicle occupant seated on a seat of a vehicle; a belt reel around which the webbing is wound; a motor that delivers a rotational driving force to the belt reel; a clutch that maintains a connection state between the motor and the belt reel in a case where rotation torque in a webbing winding direction of the motor, which is equal to or larger than a set value, is received; a detection unit configured to detect a movement state of the vehicle; a brake control unit configured to control a vehicle behavior by compressing or decompressing liquid placed inside a wheel cylinder of a brake device that brakes vehicle wheels of the vehicle; and a motor control unit configured to control an amount of conduction in the motor when the brake control unit outputs an operation signal representing that control of the vehicle behavior is in middle of process or when the movement state of the vehicle is detected by the detection unit to be in a movement state set in advance, wherein the motor control unit includes: a waiting current control unit configured to conduct a current that maintains the clutch to be in the connection state in the motor when the brake control unit outputs the operation signal; and a variable current control unit configured to adjust the amount of conduction in the motor based on the movement state of the vehicle that is detected by the detection unit wherein the variable current control unit proceeds from current control performed by the waiting current control unit to current control performed by the variable current control unit when a change in the movement state of the vehicle is detected by the detection unit during the current control performed by the waiting current control unit, and wherein the brake control unit outputs an operation signal that differs in accordance with an operating state.