| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a superior cable waterproof construction which ensures a sufficient waterproofing property, even to a cable having a complicated cross section shape, and makes it possible to exchange packings easily. SOLUTION: A cable waterproof construction is provided with a cylindrical cable case fitted to an apparatus box 1, a cap 4 fitted to the external end part of the cable case 3, and two layers of an internal packing and an external packing interposed and held between the cable case 3 and the cap 4. On the internal peripheral surface of the internal packing 5 which is an opening of the packing portion, an adhesive layer 11 made of material having an adhesive property is formed. An internal cylinder 12 for housing the two layers of packings 5, 6 in is formed, and housed inside the cable case 3. The internal cylinder 12 is cylindrical in shape coaxial with the cable case 3, and is insertable into the cable case 3 from outside the apparatus box 1. The contact surface 18 of the internal packing 5 with the external packing 6 is a rugged surface of screw construction, whose axial cross section is of wavy shape.</p> |
