| 摘要 |
For the purpose of providing a parallel-link table that is moved up/down without moving the position of a subject in the longitudinal direction, an upper structure 320 is placed over a base plate 310 connected with a platform 300 via parallel links 340 and 341, and a first bracket 350 on the upper structure 320 and a middle point of one parallel link 341 are connected by a first position correcting link 342 of a length half that of the parallel link 341 using pivotal joint portions 366 and 367; and therefore, when the base plate 310 is moved tip/down with respect to the platform 300, the upper structure 320 moves only in the vertical direction without moving in the horizontal direction, and the top plate 330 over the upper structure 320, hence, the subject placed on the top plate 330 can be moved up/down in the vertical direction without moving in the longitudinal direction.
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