JPH11141756A - Pipe body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect a pipe joint to pipes facing connecting ports of a branch pipe, an erecting pipe, and the like to each correct direction by marking a line mark of an axial direction on a surface of a pipe body, and installing the pipe serving the line as a mark. SOLUTION: In a pipe body 1, a protrusive strap line mark 2 is integratedly arranged with a surface of the pipe body 1 in a pipe axial direction, and is formed simultaneously with a time when the pipe body is manufactured by means of extrusion molding. The line mark 2 is not formed on parts of inserting connecting margins L formed on both ends of the pipe body 1. At the time of using, the pipe body 1 is arranged horizontally, an erecting pipe 5 is vertically arranged on one end part of the pipe body 1 through an elbow 3, and a hanging-down pipe 6 is vertically arranged on the other end part thereof through an elbow 3. When the connecting port 31 of the elbow 3 is joined with the pipe body 1, one of marks 311 marked on an outer peripheral surface of the connecting port 31 is matched with the line mark 2, the elbow 3 is connected to the pipe body 1 while facing the other connecting port 32 of the elbow 3 vertically upward, the erecting pipe 5 is inserted into the connecting port 2, and the connecting port 32 and the erecting pipe 5 are bonded and joined with each other. In the case of the elbow 4, the elbow 4 is connected to the pipe body 1 and the hanging-down pipe 6 by the same way.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe which is convenient for piping work.

[0002]

2. Description of the Related Art In a piping system of a pipe for flowing a fluid,
A branch pipe or a riser pipe is sometimes provided. In such a place, a pipe joint such as a tee or an elbow is connected to a straight pipe to branch or start up.

[0003] For example, as shown in FIG.
When a rising pipe B is provided at one end and a hanging pipe C hanging downward at the other end, the rising pipe B and the hanging pipe C are connected via elbows D and E of a pipe joint. The pipe B and the hanging pipe C need to be correctly piped in a predetermined fixed direction (for example, both pipes are vertical).

In this case, in order to connect the rising pipe B and the hanging pipe C to the straight pipe A via the elbows D and E, one of the connecting parts d1 and e1 of the elbows D and E is connected to the end of the straight pipe A. When fitting and connecting to each other, they are fitted and connected while visually checking that the other connection ports d2 and e2 face vertically upward or downward.

[0005]

Therefore, the elbow D,
When the connecting portions d1 and e1 of E are easily shifted in the circumferential direction, for example, when the connecting portion e1 of the pipe joint E is shifted in the circumferential direction, FIG.
As shown in FIG. 7, the pipe C may not be connected in a predetermined vertical direction and may be inclined.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide a pipe that can easily pipe a riser pipe, a branch pipe, and the like in a predetermined direction.

[0007]

A tubular body according to the present invention is characterized in that the surface thereof is provided with an axial streak indication.

[0008] In the present invention, the streak display is such that the operator can visually recognize the streak, such as a streak made of paint or ink, a protruding streak overlaid on the surface, or a concave streak cut out of the surface. Should be fine. These lines may be dotted lines instead of continuous lines.

In the case where the streak display is an uneven streak,
Convex filaments may hinder the insertion of the pipe into the joint of the pipe joint, and concave filaments may cause water leakage after connection. It is preferable that a linear display is not provided at the end of the tubular body.

[0010] In addition, the number of lines may be one or plural. In the case of a plurality, it is preferable to provide them at predetermined intervals at predetermined angles. For example, 180 for two
Every 4 °, 90 ° for 4 wires, 45 ° for 8 wires
It is preferably provided for each.

[0011]

In the pipe of the present invention, the surface of the pipe is marked with an axial line, so by connecting the pipe with the line as a mark, the connection port of the branch pipe, riser pipe, etc. can be oriented in the correct direction. Therefore, the pipe joint can be connected to the branch pipe, so that the branch pipe, the riser pipe and the like can be correctly piped in a predetermined direction.

[0012]

Next, an embodiment of the present invention will be described. FIGS. 1A and 1B show an embodiment of a tube of the present invention, wherein FIG. 1A is a perspective view of the tube, and FIG. In FIG. 1, 1 is a tube,
2 is a line display, 3 and 4 are fittings, 5 is a riser, 6
Is a hanging tube.

As shown in FIG. 1A, the tube 1 is a hard vinyl chloride tube made by extrusion, for example.
On the surface thereof, a line mark 2 of a convex line in the tube axis direction is provided integrally. The line 2 of the convex line can be provided at the same time when the tube is manufactured by extrusion. In addition, the linear display 2 is not provided in the portion of the insertion connection margin L at both ends of the tubular body 1.

The mode of use of the tube 1 will be described with reference to FIG. In this case, a pipe body 1 is disposed horizontally, and a riser pipe 5 is provided at one end thereof, and a drooping pipe 6 is provided at the other end thereof. .

The tubular body 1 is laid horizontally, and the connection port 31 of the elbow 3 is fitted to one end of the tubular body 1 and adhesively joined. At this time,
One of the indications 311 engraved on the outer peripheral surface of the connection port 31 of the elbow 3 at every 45 ° is aligned with the linear indication 2 of the tubular body 1,
The elbow 3 is set so that the other connection port 32 faces vertically upward.
Are connected, and the riser tube 5 is inserted into the connection port 32 and bonded.

Next, a hanging tube 4 is connected to the other end of the tube 1 via an elbow 4. That is, the connection port 41 of the elbow 4 is provided at the other end of the tube 1 with a display 4 engraved on the outer peripheral surface thereof.
11 is aligned with the line mark 2 of the tube 1 and the other connection port 42 is fitted and connected so that the connection port 42 faces vertically downward, and the drooping pipe 6 is inserted into the connection port 42 and bonded and bonded. .

As described above, the indications 31 of the elbows 3 and 4 are displayed.
The riser tube 5 and the drooping tube 6 connected to the connection ports 32 and 42 of the respective elbows 3 and 4 are correctly piped in a predetermined direction by matching the lines 1 and 411 with the line marking 2 of the tube 1. become.

[0018]

According to the pipe of the present invention, the piping such as a branch pipe or a riser pipe is directed in the correct direction by arranging the pipe with the indication of the axial streak provided on the surface as a mark. Therefore, a branch pipe, a riser pipe, and the like connected to the connection port of the pipe joint are correctly piped in a predetermined direction.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of a tube of the present invention, wherein (a) is a perspective view of the tube, and (b) is an explanatory view showing a piping example of the present invention.

FIGS. 2A and 2B show a conventional piping mode, wherein FIG. 2A is a front view and FIG. 2B is a side view.

[Explanation of symbols]

 1 tube 2 streaks display 3, 4 elbow 5 riser 6 drooping

Claims (1)

[Claims] 1. A tubular body characterized in that its surface is provided with an axial streak indication.