JPH0283624U

JPH0283624U -

Info

Publication number: JPH0283624U
Application number: JP16091388U
Authority: JP
Priority date: 1988-12-13
Filing date: 1988-12-13
Publication date: 1990-06-28

Description

[Brief explanation of drawings]

図―１は本考案の一実施例に係る地中埋設用高
強度可撓性電線管の断面図、図―２ないし図―５
は同電線管に用いた短尺管の斜視図、正面図、背
面図、一途切開側面図、図―６は図―５の短尺管
を９０°回転させた状態の一部切開側面図、図―
７は連結管体の一部を示す斜視図、図―８は短尺
管の連結の仕方を示す断面図である。１１：短尺管、１２：連結管体、１３：シース
、１４：大径短管部、１５：小径短管部、１６：
段差壁部、１７：内向き突縁、１８：外向き突縁
、１９：ストツパ用突条、２０：ストツパ用凹部
。 Figure 1 is a cross-sectional view of a high-strength flexible electrical conduit for underground burial according to an embodiment of the present invention, and Figures 2 to 5
Figure 6 is a perspective view, front view, back view, and fully cut-away side view of the short tube used in the same electrical conduit, and Figure 6 is a partially cut-away side view of the short tube in Figure 5 rotated 90 degrees.
7 is a perspective view showing a part of the connecting tube body, and FIG. 8 is a sectional view showing how the short tubes are connected. 11: short tube, 12: connecting tube body, 13: sheath, 14: large diameter short tube section, 15: small diameter short tube section, 16:
Step wall portion, 17: Inward projecting edge, 18: Outward projecting edge, 19: Stopper protrusion, 20: Stopper recess.

Claims

[Scope of utility model registration request]

A large-diameter short pipe section and a small-diameter short pipe section are arranged on the same axis via a step wall, and a plurality of inward protrusions are provided at a predetermined interval in the circumferential direction at the outer end of the large-diameter short pipe section. outward protrusions having circumferential lengths shorter than the circumferential distance of the inward protruding edges, and forming an outer edge of the small-diameter short pipe section at intervals longer than the circumferential length of the inward protruding edges in the circumferential direction; a plurality of edges are formed, and one end abuts on a part of the outer periphery of the small diameter short pipe portion, and one end abuts the outward protrusion;
A protrusion for a stopper is formed in the axial direction between the other end and the step wall, and the distance is slightly larger than the wall thickness of the inward protruding edge, and a recess for the stopper is formed in the inward protruding edge. A large number of short tubes made of hard plastic are used, and these short tubes are arranged such that the inward projecting edges and the outward projecting edges of adjacent short tubes engage in the axial direction, and a stopper protrusion and a recess are provided. The short tubes are combined so as to engage in the circumferential direction and connected in the axial direction, and the outer periphery of the thus obtained connecting tube body is covered with a soft plastic sheath to maintain the connected state of the short tubes. High-strength flexible conduit for underground burial.