| 摘要 |
<p>A press-nut (1) is adapted to engage with the threads of a bolt by pressing the nut (1) onto the bolt to receive the bolt in an insertion hole thereof. The press-nut comprises a plastic nut body (2), and a plastic tubular cap member (3) adapted to be coupled to the nut body (2) to contain the nut body (2) therein and to provide the press-nut (1) with its external appearance. The cap member (3) has a wide opening at one end so as to receive and contain the nut body (2) and a small hole at the other end, through which the bolt is inserted. The nut body (2) comprises a base portion (6), at least two screw portions (9) forming a nut (2) as a whole and having threaded grooves (10) on the inner walls thereof, and spring portions (7) extending from the base portion (6) and connected to the respective screw portions (9) with each spring portion (7) resiliently biasing the corresponding screw portion (9) so as to be pressed upward from the base portion (6). The outer surface of each screw portion (9) is tapered gradually to reduce the diameter towards the bolt insertion hole on the other end and the inner side of the cap member (3) is also tapered to reduce the inner diameter thereof in accordance with the tapered surface of the screw portions (9). <IMAGE></p> |
