| 摘要 |
A magnet position adjustment mechanism 50 is provided to change a relative positional relation between opposing permanent magnets by rotating at least one of opposing permanent magnets 31 and 41 of a first and second magnet units 30 and 40 along the facial direction. By adjusting the magnetic poles of the opposing permanent magnets 31, 32 or 41, 42 to be different or the same, the damping ratio changes at the time when a movable permanent magnet 24 and a conductor 25 supported by a first and second arms 22 and 23 pass through. At the time of seating and the start of driving, if, for instance, a predetermined time and a magnetic spring are adjusted in a range so as not to generate a negative spring constant, and a damping ratio of the magnetic damper is set to become small, a feeling of seating with a sense of strong spring is obtained so that a sense of dropping can be suppressed at the time of seating, and a feeling of something foreign can also be suppressed at the time of driving start.
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