| 摘要 |
To provide a closed cable drag chain, which is capable of preventing the contact wear powder generated in holding and guiding the cable or the like from being scattered by reliably closing the cable or the like, and wherein the assembling, maintenance and repair are easy while having light weight and low noise. In a closed cable drag chain into which a cable or the like is inserted to be held and guided in conditions where a number of intermediate frames 10 are articulately connected to each other, an outer frame 20 including a removable opening/closing frame structure fit-covers a coupling portion of the adjacent intermediate frames 10 to close the coupling gaps S respectively thereby coupling it in a tubular shape, the intermediate frame 10 comprises an intermediate frame body and an opening/closing lid member 12 fitted into the intermediate frame body 11, and the intermediate frame body 11 includes lower open end surfaces 11b, which abut with each other on the chain bend inner peripheral side to hold a required bending position of the chain and upper open end surfaces 11c, which abut with each other on the chain bend outer peripheral side to hold a straight extended position of the chain.
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