Accelerator device

An accelerator device comprising:

• an accommodation part to be attached to a vehicle;
• a rotation shaft having a first end and a second end that are supported by the accommodation part;
• a pedal part including
• a pedal arm having a first end fixed to the rotation shaft and
• a pedal arranged to a second end of the pedal arm to be pressed by a driver of the vehicle in an open direction;
• a rotation angle detector accommodated in an interior space of the accommodation part and detecting a rotation angle of the rotation shaft with respect to the accommodation part;
• a return mechanism part accommodated in the interior space of the accommodation part and biasing the rotation shaft to be rotated in a close direction opposite from the open direction;
• a seal member arranged in a clearance through which the interior space of the accommodation part communicates with an arm accommodation space accommodating the pedal arm, the seal member restricting a foreign matter from entering the interior space of the accommodation part;
• and
• wherein the arm accommodation space and the accommodation part are partitioned from each other by a first wall and a second wall perpendicular with each other,
• the first wall spreads in a direction perpendicular to the rotation shaft,
• the first wall has a through hole corresponding to the clearance,
• the rotation shaft passes through the through hole, and
• the seal member is arranged between a wall surface of the through hole and an outer wall of the rotation shaft.