| 摘要 |
<p>PROBLEM TO BE SOLVED: To establish a certain waterproof structure, facilitate cable insertion, and secure the freedom of bending a cable. SOLUTION: A cable 3 threaded through a through hole provided in an outer plate 2 is engaged with the outer plate 2 by a cylindrical cable bushing 1, and the internal wall surface of its trunk part 13 is furnished with a plurality of inner pleats 14 as ring-shaped projections in parallel arrangement to ensure certain waterproofing, and the inner pleats 14 are furnished with forefront pleats 15 equipped wi a height and thickness corresponding to the difference in diameter between cables 3 penetrating and having a plurality of fine ring- shaped projections in the forefront part so as to facilitate insertion of the cable, while the external wall surface of the trunk part 13 is equipped with a plurality of outer ring-shaped grooves 16 in parallel arrangement, and the whole trunk part 13 is formed in pleats so as to secure the freedom of bending the cable.</p> |
