| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint structure of a segment capable of connecting the segments together with good accuracy by reducing the freedom of a male joint and a female joint to a low level. SOLUTION: The male joint 6 comprises: a plurality of rod bodies 13a, 14a which are protruded outward from a contact end face 1c of one of the segments 4, and arranged side by side in a direction S that slides both the contact end faces 1c, 1d on each other; engaging portions 13b, 14b which are arranged at distal ends of the rod bodies 13a, 14a, respectively; an abutting plate 15 which allows the rod bodies 13a, 14a to insert in the insertion holes formed therein to be connected to the rod bodies 13a, 14a; and elastic bodies 18, 19 which are interposed between the engaging portions 13b, 14b and the abutting plate 15, respectively. The female joint 7 is provided with an engaging plate 25 which extends from one end 25a to the other end 25b thereof, and has a notch 26 into which the rod bodies 13a, 14a can be fitted sideways. COPYRIGHT: (C)2009,JPO&INPIT
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