JPS645187Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an elbow, which is a pipe joint used to connect pipes that form a certain angle to each other.

An elbow refers to a pipe joint with an extremely small radius of curvature, and as shown in Figs. Bolt insertion holes 3 are formed at both ends of the flange 2 in the longitudinal direction.

By the way, since the radius of curvature of the elbow A is extremely small as described above, the gap P between the two flanges 2 that face each other is narrow, and if the insertion holes 3 are facing each other, bolts cannot be tightened. For this reason,
As shown in FIG. 3, in the conventional elbow A, the flange 2 is formed so that the line segment a connecting both the insertion holes 3 is perpendicular to the plane formed by the axis b of the circular tubular body 1.

Therefore, as shown in Fig. 4, when connecting the pipe B using this elbow A on the floor or wall, the most protruding part of the flange 2 where the insertion hole 3 is formed will come into contact with the floor or wall. , since the curvature of the abutting surface of the most protruding part is small, there is a problem that the elbow A becomes unstable. Therefore, as shown in the figure,
A hole 4 is formed in the floor and wall, and the hole 4 is filled with putty 5 to stabilize the elbow A, and the amount of filling is adjusted to create a height difference in the elbow A at both ends of the pipe B. This allows water to flow smoothly inside.

However, forming the holes 4 and applying putty or the like is troublesome and has poor workability.

The purpose of this invention is to provide an elbow with good workability.

That is, in the above-mentioned conventional elbow, the flange is formed so that the angle formed by the line segment connecting the two insertion holes and the line segment perpendicular to the plane formed by the axis of the circular tubular body is approximately 45 degrees. .

This invention will be explained in detail below with reference to FIGS. 1 and 2, which show examples thereof.

As shown in both figures, the elbow A of this invention is provided with flanges 2 having spindle-shaped end surfaces at both ends of a bent circular tubular body 1, bolt insertion holes 3 are formed at both longitudinal ends of the flanges 2, and bolt insertion holes 3 are formed at both ends of the flange 2 in the longitudinal direction. 3 and a line segment c perpendicular to the plane formed by the axis b of the cylindrical body 1.
Flange 2 so that the angle formed with
was formed.

In this way, the flange 2 is almost the same as the one in Figure 4.
By tilting the flange 2 by 45 degrees, when connecting the pipe B with this elbow A to the floor or wall as shown in Fig. 2, the relatively flat part q of the flange 2 can be placed on the floor
The elbow A can be stabilized by being able to make contact with the wall. Therefore, the difference in height of the pipe B can be determined by simply interposing the adjusting member 6 between the flat portion q and the floor/wall without forming a hole in the floor/wall.

In addition, since the insertion hole 3 is only inclined by about 45 degrees compared to the conventional one, there is enough space between it and the companion flange 3 to insert and tighten the bolt 7 and nut 8, and to connect the elbow A and the pipe B. There is no problem.

Note that, as in the example, if the side surface q of the flange 3 extending from the plane formed by the line segment a and the axis b to the insertion hole 3 near the insertion hole 3 is a flat surface parallel to the axis b, (the plane), this bolt A is When molding, X-X
A split mold with a line (a plane formed by the axis b) as a boundary can be used, which has the effect of improving the ease of manufacturing the elbow A.

As described above, according to the elbow of this invention, the angle between the line segment connecting the bolt insertion holes at both ends of the flange and the line segment perpendicular to the plane formed by the axis of the circular tubular body is approximately 45 degrees. Since a flange is formed, when pipes are connected using this elbow, the elbow can be stabilized without forming holes in the floor or wall, which has the effect of greatly improving workability.

In addition, because of its short height, it is suitable for piping in cases where the distance between the ceiling and the floor of the upper floor is narrow, such as in recent high-rise buildings.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the elbow of this invention, Fig. 2 is a cross-sectional view of the embodiment of Fig. 1, and Fig. 3 is a perspective view of an embodiment of the elbow of this invention.
The figure is a perspective view of a conventional elbow, and FIG. 4 is a sectional view of FIG. 3 in use. 1... Cylindrical body, 2... Flange, 3... Bolt insertion hole, A... Elbow, B...
…tube.

Claims (1)

[Scope of utility model registration request] In an elbow in which flanges with spindle-shaped end surfaces are provided at both ends of a bent cylindrical body and bolt insertion holes are formed at both longitudinal ends of the flanges, a line segment a connecting both of the through holes and an axis of the bent cylindrical body An elbow characterized in that the flange is formed so that the angle formed with a line segment c perpendicular to a plane including b is approximately 45 degrees.