Patent ID: 8381610

Claim:
An accelerator device which outputs a signal based on a rotation angle of a repeatedly-rotatable grip, comprising: a case arranged to surround a base end part of the grip; a grip cylinder member forming a center portion of the grip, the grip cylinder member including a grip cylinder member sector gear; a rotary body which rotates with rotation of the grip, the rotary body including a rotary body sector gear, the grip cylinder member sector gear being configured to transmit rotation of the grip to the rotary body through engagement with the rotary body sector gear, the rotary body being approximately disc-shaped and including a cylindrical shaft portion covered at the center part thereof; a shaft portion to rotatably support the rotary body formed at a side face of the case, the shaft portion being inserted into the cylindrical shaft portion so that the rotary portion is rotatable about the shaft portion; a magnet which rotates with rotation of the rotary body; a rotation angle detector which detects a rotation angle of the grip based on magnetic field variation due to rotation of the magnet; a separation member which separates the rotary body having the magnet and the rotation angle detector as being disposed therebetween, the separation member including bearing means which rotatably holds the rotary body; and an urging member which returns the grip to an original point position by urging the rotary body, the rotary body being pressed toward the separation member side by the urging member; wherein the magnet is disposed to one side face of the rotary body and the urging member is disposed to an other side face of the rotary body.