| 摘要 |
A linkage mechanism ( 40, 40 B, 40 C) includes a pair of arms ( 41, 41 ) extending from a rotating member ( 21 ) toward a tilting member ( 24 ), a pair of arms ( 43, 43 ) extending from the tilting member ( 25 ) toward the rotating member ( 21 ), and a link ( 45 ) inserted between the pair of arms ( 41, 41 ) of the rotating member and between the pair of arms ( 43, 43 ) of the tilting member.
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