To provide an accelerator device downsizing a body in a rotating shaft direction, and preventing local wear.
When an accelerator pedal 12 is operated, a gear wheel 20 rotates about a rotating shaft 22 in arrows A, B directions, and a rack 30 reciprocates in a straight-line direction of arrows C, D. The rack 30 slides with a sliding surface 52. Teeth 24 of the gear wheel 20 are involute teeth. Teeth 32 of the rack 30 are tapered teeth having tapered engaging surface with the teeth 24. When an accelerator pedal 12 is depressed against a load FS of a coil spring 40 and the gear wheel 20 rotates in the arrow A direction, friction force μFH acting between the rack 30 and the sliding surface 52 becomes large. When a rotation angle of the accelerator pedal 12 changes and acting force F added from the gear wheel 20 to the rack 30 is increased/decreased, the friction force μFH is increased/decreased at a fixed proportion. A position of a contact point E between the teeth 24 of the gear wheel 20 and the teeth 32 of the rack 30 successively moves from a tooth base to a tooth tip and from the tooth tip and the tooth base according to rotations of the gear wheel 20.
HARIO TETSUO
KOBAYASHI YASUNORI
NAKAMURA HIROSHI
KANO MASAO
South Island Noboru