| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an accelerator device enabling suppression of decline in tread force caused by a secular change.SOLUTION: In an accelerator device, a friction disc body 41 is disposed between a housing and a return rotor. A friction portion 42 protruded from the friction disc body 41 to the return rotor side is brought into sliding contact with a first sliding portion arranged in the return rotor before worn, and along with wear of the friction portion 42, a central position of the surface brought into sliding contact with the return rotor moves to the radial inner direction or the radial outer direction of the return rotor. A second sliding portion having a friction coefficient different from that of the first sliding portion is disposed in the direction in which the central position of the sliding contact surface between the friction portion 42 and the return rotor moves along with the wear of the friction portion 42. Due to this, along with wear of the friction portion 42, torque applied to the friction portion 42 and the return rotor can be adjusted and the friction coefficient between the return rotor and the friction portion 42 can be adjusted.</p> |
