Locking devise for optical drop cable

摘要

A locking device for optical drop cable 100 comprising a cable conductor optical fiber 210, tension members 220 sandwiching the cable conductor optical fiber 210, a sheath 230 having a notched portion 250 covering the cable conductor optical fiber 210 and the tension members 220, a rubber sleeve 20 of the shape constituting a part of the conical wherein several through-holes 26 corresponding to an outline of the sheath 230 are formed along a shaft center, and a slit portion 18 and a tapered portion 34 configured to squeeze the rubber sleeve 20 toward the shaft center direction in a state where a optical drop cable 200 is passed through the through-hole 26, is provided to easily realize waterproofing measures for the optical drop cable of a peculiar shape.

主权项

1. A locking device for optical drop cable comprising:
a cable conductor of optical fiber; tension members sandwiching the cable conductor of optical fiber; a sheath having a notched part, and covering the cable conductor of optical fiber and the tension members; a rubber sleeve of a conical trapezoidal shape constituting a part of the conical as a entire outline, and being formed several through-holes corresponding to an outline of the sheath along a shaft center; a member positioning of the rubber sleeve, and having a step portion wherein its inside diameter is smaller than the diameter of the bottom surface of the rubber sleeve in a state where an optical drop cable is passed through the through-hole; and a cap having a tapered portion to grip the rubber sleeve, and being screwed to the member, wherein the cap is screwed to the member in a state where the rubber sleeve is inserted from its bottom to the member, together with sides of the rubber sleeve is squeezed toward the shaft center by the tapered portion, the rubber sleeve is pressed in its shaft direction, as a result, a sealing property between the rubber sleeve and the sheath is ensured by a outer edge of the bottom surface of the rubber sleeve and the step portion.