CORRUGATED PIPE ASSEMBLY FOR RECEIVING LINES AND METHOD OF MANUFACTURE OF SUCH CORRUGATED PIPE ASSEMBLY Russian patent published in 2018 - IPC H02G3/04 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electrical engineering, in particular to the corrugated pipe for cable harness reception lines. Corrugated pipe (1) comprises inner (3) and outer (2) corrugated pipe made of plastic, with annular corrugations (5, 4) and corresponding longitudinal groove (8, 7), outer corrugated pipe (2) can be placed on inner corrugated pipe (3) in such a way that corrugations (4, 5) of two corrugated pipes (2, 3) are engaged, longitudinal strip (9) on inner corrugated pipe (3) with corrugations (6) of the same shape and distribution as the corrugations on outer corrugated pipe (2) protrudes into longitudinal groove (7) of outer corrugated pipe (2), the outer diameter of the corrugations on the inner corrugated pipe corresponds to the outer diameter of corrugations (4) on outer corrugated pipe (2), end cross sections (13, 13") of all corrugations (4, 5, 6) on both corrugated pipes (2, 3) are closed, two longitudinal sides (11) of longitudinal strip (9) are connected to the remainder of inner corrugated pipe (3) by means of corresponding V-shaped depression (16), when two corrugated tubes (2, 3) are assembled together, each lateral edge (10) of longitudinal groove (7) of outer corrugated pipe (2) projects into V-shaped recess (16) of inner corrugated pipe (3).

EFFECT: invention is intended to enable the use of a corrugated pipe assembly in a very dusty and dirty environment.

13 cl, 14 dwg