| 摘要 |
PROBLEM TO BE SOLVED: To provide a blind nut mountable to mounted members with a wide range of plate thickness without any fault.SOLUTION: A blind nut (20) includes an internal thread part (21) formed with an internal thread (25) inside; a hollow tubular part adjacent to the internal thread part; and a flange (24) with an opening formed at the end on the side opposite to the internal thread part. The internal thread part and the tubular part are inserted into a mounting hole (43) of a mounted member (41), and a part of the tubular part is plastically deformed to enlarge the diameter. The mounted member is held between a deformed diameter enlarged part (23a) and the flange to mount the blind nut to the mounted member. The tubular part includes a first tubular part (22) adjacent to the internal thread part and thinner in wall thickness than the internal thread part, and a second tubular part (23) located between the first tubular part and the flange and thinner in wall thickness than the first tubular part. A part of the second tubular part is plastically deformed to enlarge the diameter, and then the first tubular part is plastically deformed to enlarge the diameter following the deformation of the second tubular part, to mount the blind nut to the mounted member. |
