| 摘要 |
PROBLEM TO BE SOLVED: To permit free combination by providing two rectangularly flat plates assembled in a L-shape and a flat plate having round pivotally supported to a free end side on one rectangularly flat plate, and fastening the flat plate having roundness by a bolt and the like. SOLUTION: Two rectangularly flat plates 1, 2 are assembled in a L-shape. In this case, in a condition in which an end part of one flat plate 1 and an end part of the other flat plate are combined in a L-shape, A bolt shaped locking tool A is penetrated in holes 1-1, 2-1 drilled on end parts of the flat plates 1, 2, and fixed by means of fastening. A rectangularly flat plate 3 having round is pivotally supported to a free end of the flat plate 1 using the same locking part B. A locking tool C is arranged on a free end part of the other flat plate 2, an annular part arranged on a terminal of a bolt (a) is inserted into an intermediate part 5 of the locking tool C, a free end side of the bolt (a) is locked with a cutout port D formed on the free end side of the flat plate 3 having round, and is fixed by fastening a nut.
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