| 摘要 |
PROBLEM TO BE SOLVED: To provide a frame 11 capable of preventing deviation of a nut 15 stored in a storage groove 22 and facilitating the manufacture of a mold. SOLUTION: A width W5 of a contact fact 27 from a support face 25 is formed to be at least a width c which is substantially half of an outside dimension a of the nut 15 to bring it into contact with a region which is at least substantially half in the direction of outer shape of the nut 15 and press it by the contact face 27. Since an interval W4 between the contact face 27 and a rotation prevention face 26 is smaller than the thickness b of the nut 15, the nut 15 stored in the storage groove 22 is stopped within the region which enables locking regulation in the storage groove 22 by the contact face 27. Consequently, when a bolt is connected with the nut 15 stored in the storage groove 22 from an opening part 21 side, it is possible to prevent deviation due to falling down of the nut 15 and moving to a turn allowance groove 29 side. Furthermore, a turn allowance groove 29 is formed into grooves by a plurality of planes to eliminate a curved face and facilitate the manufacture of the mold.
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