JPH0314920U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

図−１は請求項１の考案の一実施例に係る電線
管の半分切開側面図、図−２および図−３は請求
項２の考案の一実施例を示す半分切開側面図およ
び要部拡大断面図、図−４および図−５は請求項
３の考案の一実施例を示す半分切開側面図および
要部拡大断面図、図−６および図−７は請求項４
の考案の一実施例を示す半分切開側面図および要
部拡大断面図である。 １……最内層、２……最外層、３……潤滑剤、
４……オレフイン系樹脂よりなる中間層、５……
発泡合成樹脂よりなる中間層。 Fig. 1 is a half-cut side view of a conduit according to an embodiment of the invention of claim 1, and Figs. 2 and 3 are half-cut side views and enlarged main parts of an embodiment of the invention of claim 2. A sectional view, FIGS. 4 and 5 are a half-cut side view and an enlarged sectional view of a main part showing an embodiment of the invention according to claim 3, and FIGS. 6 and 7 are an embodiment of the invention according to claim 4.
FIG. 2 is a half-cut side view and an enlarged sectional view of the main part, showing an embodiment of the invention. 1...Innermost layer, 2...Outermost layer, 3...Lubricant,
4... Intermediate layer made of olefin resin, 5...
Intermediate layer made of foamed synthetic resin.

Claims (1)

【実用新案登録請求の範囲】 １ 波付けされた管壁が２層以上の合成樹脂で構
成され、最内層が耐熱性硬質ＰＶＣ（ポリ塩化ビ
ニル）からなり、最外層が耐衝撃性ＰＶＣからな
つていて、各層が非接着状態で接触していること
を特徴とする合成樹脂多層波付き電線管。 ２ 波付けされた管壁が２層以上の合成樹脂で構
成され、最内層が耐熱性硬質ＰＶＣからなり、最
外層が耐衝撃性ＰＶＣからなつていて、各層間に
潤滑剤が介在していることを特徴とする合成樹脂
多層波付き電線管。 ３ 波付けされた管壁が３層以上の合成樹脂で構
成され、最内層が耐熱性硬質ＰＶＣからなり、最
外層が耐衝撃性ＰＶＣからなつていて、少なくと
も一部の中間層がオレフイン系樹脂からなつてい
ることを特徴とする合成樹脂多層波付き電線管。 ４ 波付けされた管壁が３層以上の合成樹脂で構
成され、最内層が耐熱性硬質ＰＶＣからなり、最
外層が耐衝撃性ＰＶＣからなつていて、少なくと
も一部の中間層が発泡合成樹脂からなつているこ
とを特徴とする合成樹脂多層波付き電線管。[Claims for Utility Model Registration] 1. The corrugated pipe wall is composed of two or more layers of synthetic resin, the innermost layer is made of heat-resistant rigid PVC (polyvinyl chloride), and the outermost layer is made of impact-resistant PVC. A synthetic resin multilayer corrugated electrical conduit characterized by the fact that each layer is in contact with each other in a non-adhesive state. 2. The corrugated pipe wall is composed of two or more layers of synthetic resin, the innermost layer is made of heat-resistant hard PVC, the outermost layer is made of impact-resistant PVC, and a lubricant is interposed between each layer. A synthetic resin multilayer corrugated electrical conduit characterized by: 3 The corrugated pipe wall is composed of three or more layers of synthetic resin, the innermost layer is made of heat-resistant hard PVC, the outermost layer is made of impact-resistant PVC, and at least a part of the intermediate layer is made of olefin resin. A synthetic resin multilayer corrugated conduit characterized by being made of . 4 The corrugated pipe wall is composed of three or more layers of synthetic resin, the innermost layer is made of heat-resistant hard PVC, the outermost layer is made of impact-resistant PVC, and at least a part of the intermediate layer is made of foamed synthetic resin. A synthetic resin multilayer corrugated conduit characterized by being made of .