| 摘要 |
PROBLEM TO BE SOLVED: To provide an accelerator pedal device which always performs stable pedal operation without changing hysteresis characteristics in pedaling between an initial use and after an endurance run. SOLUTION: A slide contact part 36 of a friction plate 20 with a rotor 16 has a toric part where the side cross section equipped with a trapezoidal shape having a short side at the rotor side. Thus, the slide contact area of the rotor 16 with the friction plate 20 is gradually increased accompanied by the progress of abrasion of the friction plate 20. Sliding resistance between the rotor 16 and the friction plate 20 is thereby increased by the amount corresponding to a variation of the hysteresis characteristics accompanied by the increase of a set length of the spring 18 after endurance, and as the result, the hysteresis characteristics in pedaling is prevented from being changed between the initial use and after the endurance run. COPYRIGHT: (C)2008,JPO&INPIT
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