Brake device of vehicle seat

A brake device of a vehicle seat comprising:

• a brake mechanism section including a drive-side gear provided at one end of an output shaft, the brake mechanism section configured to cause the output shaft to be in a braking state so that the output shaft does not rotate against a reverse input that is input from a drive-side gear side;
• and
• a drive mechanism section configured to, when operating and rotating an operating member in either one of forward or reverse rotational direction from a neutral position, release the braking state of the output shaft and allow rotation of the output shaft in the one of forward or reverse rotational direction,
• wherein the brake mechanism section and the drive mechanism section are provided in a seat adjuster of the vehicle seat, and are coaxially aligned with each other,
• wherein the brake mechanism section further includes a brake housing having, on an inner peripheral surface thereof, a cylindrical tubular frictional surface,
• wherein the drive mechanism section includes a drive wheel disposed inside the brake housing and structured to release the braking state of the output shaft and further drive and rotate the output shaft integrally with the operating member, and
• wherein the drive wheel has, on an outer periphery thereof, frictional resistance portions that come into press-contact with the cylindrical tubular frictional surface of the brake housing by elastic force of the frictional resistance portions at at least three positions in a circumferential direction of the drive wheel.