COMPOSITE CONDUIT FOR CABLE

摘要

PROBLEM TO BE SOLVED: To prevent an inner tube already pulled in from being damaged at the time of pulling in an inner tube later in a composite conduit for cables which is formed so that the cable may be pulled in the inner tube after the inner tube is pulled in a laid outer tube. SOLUTION: An inner tube fixing unit 10 is fitted at the end part of an outer tube 1, and the end part of an inner tube 2 pulled in the outer tube 1 is fixed by the inner tube fixing unit 10. The inner tube fixing unit 10 is constituted of a tubular member 3 mounted on the inner periphery of the end part of the outer tube 1, an end surface plate 6 fitted at the outer end of the tubular member, and an inner tube fixture 9 fitted in a hole 8 form at the end surface plate.