Leg joints and piping structure

Abstract

To provide a leg part joint which can provide a sufficient holding power without slipping when a wire is wound, and further which has no risk of damaging an outer sheath or a sound insulation cover.SOLUTION: A leg part joint 80 comprises: an upstream side socket part 81; a downstream side socket part 83; and a bend part 82 connecting the upstream side socket part 81 and the downstream side socket part 83, wherein the leg part joint has a protrusion part protruding radially outward on an outer peripheral surface of the upstream side socket part 81, and the protrusion part is provided in at least one location at a bottom edge on a peripheral surface of the upstream side socket part 81.SELECTED DRAWING: Figure 1

Claims

1. A leg joint located in the space beneath the floor slab of a building and held by a suspension fitting fixed to the floor slab, The aforementioned leg joint is, Upstream receiving section, The downstream receiving section, It comprises a bend portion connecting the upstream receiving portion and the downstream receiving portion, The outer circumferential surface of the upstream receiving portion has a protrusion that extends radially outward, The aforementioned protrusions are located on the circumferential surface of the upstream receiving portion and are provided at two locations spaced apart in the axial direction of the upstream receiving portion. The aforementioned protrusion is located on the outside of the bend of the bend portion. A sound-insulating cover is provided on the bend portion of the leg joint. The sound-insulating cover comprises a sound-absorbing material and a sound-insulating material that surrounds the sound-absorbing material. The sound-insulating cover is wrapped around the leg joint. Leg joint.

2. The leg joint according to claim 1, The horizontal main pipe inserted into the downstream receiving port, Manifold joint and, Equipped with, The aforementioned horizontal main pipe and the aforementioned downstream receiving portion are connected by adhesive. A piping structure in which the aforementioned manifold joint and the upstream receiving portion are connected via a rubber ring.

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