JPH0399020U

JPH0399020U -

Info

Publication number: JPH0399020U
Application number: JP735790U
Authority: JP
Priority date: 1990-01-29
Filing date: 1990-01-29
Publication date: 1991-10-16
Anticipated expiration: 2005-01-29
Also published as: JP2540546Y2

Description

[Brief explanation of the drawing]

図面は本考案の実施例を示すものであつて、第
１図は円筒形にして使用しているときの外側から
みた正面図、第２図は第１図の平面図で一部を省
略する。第３図は第２図のように円筒形にして使
用したときの状態を部分的に拡大したものの平面
図を示し、第４図は収納、運搬時の状態の平面略
図で、第５図は本考案の保安柵を馬蹄形に使用し
た状態の平面図、第６図は第５図に示す端部カバ
ーの断面図を示す。図中、１，２，３，４，………は断面梯形の管
状の細長い柵、ａ，ｂ，ｃ，ｄ，………はその長
い方の辺、ａ′，ｂ′，ｃ′，ｄ′，………はそ
の短い方の辺、Ａは前記の一つ一つの細い柵の外
側周縁全面をつなぐもの、Ｂはこのそれぞれの端
部のフアスナー部分、Ｅは本考案の馬蹄形になつ
た場合の円部分、Ｃ，Ｃ′はその端部の直線状に
なつた部分、Ｄは端部カバーの縦断面図を示す。 The drawings show an embodiment of the present invention, in which Fig. 1 is a front view seen from the outside when it is used in a cylindrical shape, and Fig. 2 is a plan view of Fig. 1, with some parts omitted. . Fig. 3 shows a partially enlarged plan view of the cylindrical state shown in Fig. 2 when used, Fig. 4 is a schematic plan view of the state during storage and transportation, and Fig. 5 FIG. 6 is a plan view of the safety fence of the present invention used in a horseshoe shape, and FIG. 6 is a sectional view of the end cover shown in FIG. 5. In the figure, 1, 2, 3, 4, ...... are elongated tubular fences with a trapezoidal cross section, a, b, c, d, ...... are their longer sides, a', b', c', d', ...... is the shorter side, A is the one that connects the entire outer periphery of each of the narrow fences, B is the fastener part of each end, and E is the horseshoe shape of the present invention. C and C' are the straight end portions of the circular portion, and D is a vertical cross-sectional view of the end cover.

Claims

[Claims for Utility Model Registration] (1) It has a trapezoidal cross-section, and the other two sides connecting the end of the long side and the end of the short side are slanted by 3 degrees,
A large number of hollow tubular fences with long cross-sections are made by cutting the corners of the long side and the other two sides into triangles, and the short sides of these trapezoids are successively joined together to form a circular shape, and the entire outer periphery is covered with tarpaulin or A manhole safety fence that is attached with synthetic rubber and connected at both ends, which can be secured with something like a fastener or left open. (2) The manhole security fence according to claim (1), wherein the manhole security fence is fixed straight by covering the top of the connected security fence with an end cover of an appropriate length and having a vertical U-shaped cross section.