JP3144457U - Piping connection bracket - Google Patents

Abstract

[PROBLEMS] To efficiently form pipe connection fittings that are integrally formed by pressing a metal plate by securely supporting each pipe even when connecting pipes of different diameters and reducing the development area. Providing a possible pipe fitting structure.
A pipe connection fitting integrally formed for connecting a large-diameter pipe pipe and a small-diameter pipe each having a flange portion, and a pair of side pieces 1 and 1 arranged facing each other, While the U-shaped piece is formed by the connecting piece 2 that connects the end portions of the side pieces, the flange insertion portions 3 into which the connecting flanges that contact the flange portions are inserted into the side pieces 1 and 1, respectively. A large-diameter support portion 4 that forms a convex arcuate portion on the outer side on one side of the flange insertion portion 3, and a convex deformation portion on the inner side of the other side piece of the flange insertion portion 3. By forming the small-diameter support portion 5 as described above, pipes having different diameters can be supported.
[Selection] Figure 1

Description

  The present invention relates to a pipe connection fitting for connecting two pipes having different diameters, and more particularly to a structure of a pipe connection fitting that can be efficiently molded by reducing the development area when integrally formed by pressing. .

Conventionally, for this type of pipe connection fitting 70, for example, as shown in FIG. 9, a square spring portion 71 is used as a head, and a circular opening 73 is drilled in the center on both sides of the spring portion 71. There has been proposed a configuration in which arc-shaped portions 72, 72 are continuously provided and a guide portion 74 is formed by bending the lower end of the arc-shaped portion 72 outward. In this pipe connection fitting 70, two pipes having different diameters are used for connection, so that the diameters of the arc pieces 72a and 72b of the arc-shaped part 72 are different between the left and right sides of the rectangular opening 73. The end portions and the connecting positions of the spring portion 71 and the guide portion 74 connected to the arc-shaped portion 72 are also formed to be different on the left and right sides of the rectangular opening 73 (see Patent Document 1).
JP 2001-99376 A

  When pipes are connected using the pipe connection fitting 70 having the above structure, as shown in FIG. 10, the large diameter pipe 80 having the flange portion 81 and the small diameter pipe 90 having the flange portion 91 are brought into contact with each other. The pipe connection fitting 70 is inserted into the flange contact portion from the guide portion 74, and the contact portion between the flanges is fitted and disposed in the rectangular opening 73, and the large-diameter arc piece 72a of the arc-shaped portion 72 is large. The diameter pipe 80 is supported, and the small diameter arc piece 72b supports the small diameter pipe 90 to maintain the contact state.

  However, in the case of the pipe connection fitting 70 described above, since the diameter of the arc piece of the arc-shaped portion 72 is different between the left and right sides of the rectangular opening 73, the pipe connection fitting 70 is integrally formed by pressing from a metal plate. If it is formed into a three-dimensional shape, it becomes a twisted three-dimensional shape, and there is a problem that the pipes cannot be reliably supported due to the bending of the arc-shaped portion 72 (the large-diameter arc piece 72a and the small-diameter arc piece 72b).

  That is, when the arc-shaped portion 72 (the large-diameter arc piece 72a and the small-diameter arc piece 72b) is formed by press working, the unfolded length of the large-diameter arc piece 72a and the small-diameter arc piece 72b before the press working is the same (see FIG. 11 (a)), since the curvatures of the formed arcs are different, the length L on the side with the larger curvature is shortened when bent simultaneously (FIG. 11 (b)), and the large-diameter arc piece 72a side (L is The whole is pulled to the small side (FIG. 11 (c)), and as a result, the fixed connection fitting is twisted.

  When the diameter difference between the pipes for which the fixed connection fitting 70 is used is small, a large twist does not occur in the arc-shaped portion 72, but when the step is large, the twist becomes remarkable and the product does not function. was there.

  Therefore, in order to be able to reliably support each pipe with respect to the connection between pipes having different diameters in the pipe connection fitting formed integrally by pressing the metal plate, A structure as shown in FIG. The pipe connection fitting 10 has a pair of side pieces 12 arranged to face each other and a connecting piece 11 for connecting end portions of the side pieces, and is bent so as to be orthogonal to the side pieces. Arc-shaped support portions 15 that support the small-diameter pipes are arranged so that the parts face each other, and each flange is inserted with the large-diameter pipe and the small-diameter pipe in contact with each other. The fitting holes 13 are formed in each side piece, the curved portion 17 that contacts the large-diameter pipe is formed in the center portion of the side piece, and the connecting piece 11 is positioned on the arrangement surface of the arc-shaped support portion. The side pieces are formed of rectangular pieces that connect the end portions.

According to the above-described structure, when the pipe connection fitting is attached to the connection portion between the large-diameter pipe and the small-diameter pipe, the side piece 12 and the coupling piece 11 have a spring action and are arranged to face each other. The large-diameter pipe is supported by the curved portion 17 of the side piece 12, and the small-diameter pipe is supported by the side wall 16 of the arc-shaped support portion 15 that is bent and arranged so as to be orthogonal to the side piece 12. There is no twist in the pipe connection fittings, and it is possible to reliably support each pipe (see Patent Document 2).
JP 2004-53000 A

However, the pipe fitting 10 described above has a complicated shape because it supports the large-diameter pipe by the curved portion 17 of the side piece 12 and the small-diameter pipe by the side wall 16 of the arc-shaped support portion 15, and the metal before press working The developed area of the plate is as shown in FIG. In FIG. 13, the inner portion of the portion that becomes the arc-shaped support portion 15 becomes an unnecessary portion that is cut off, so that the entire development area becomes large, and the pipe connection fitting cannot be efficiently molded with a small amount of material, and the cost increases. was there.
In addition, since the connecting piece 11 and the opening protrude beyond the flange diameter after being attached to the pipe joint, there is a problem that the space for attachment becomes large.

  The present invention has been proposed in view of the above circumstances, and in a pipe connection fitting integrally formed by pressing a metal plate, each pipe is reliably supported for connection between pipes having different diameters, and An object of the present invention is to obtain an inexpensive and compact structure of a pipe connection fitting by enabling efficient molding by reducing the development area.

In order to achieve the above object, a device according to claim 1 is a pipe connection fitting integrally formed for connecting a large-diameter pipe pipe and a small-diameter pipe each having a flange portion, and includes the following configuration. It is characterized by that.
A U-shaped piece is formed by a pair of side pieces arranged to face each other and a connecting piece that connects end portions of the side pieces.
Each side piece is provided with a flange insertion portion into which a connecting flange with which the flange portions abut each other is inserted.
A large-diameter support portion that is a convex arcuate portion on the outer side is formed on one side of the flange insertion portion.
A small-diameter support portion serving as a convex deformed portion is formed on the inner side of the other side of the flange insertion portion.

  According to a second aspect of the present invention, in the pipe fitting according to the first aspect, the convex deformation portion of the small-diameter support portion has a straight portion.

  According to a third aspect of the present invention, in the pipe fitting according to the first aspect, the convex deformation portion of the small-diameter support portion has an arcuate shape.

  According to a fourth aspect of the present invention, in the pipe fitting according to the first aspect, the connecting piece is formed to have a convex curve inward.

  According to a fifth aspect of the present invention, in the pipe connection fitting according to the first aspect, an opening is formed in the connecting piece.

  According to a sixth aspect of the present invention, in the pipe fitting according to the first aspect, a bent portion that is bent outward is formed at each side end.

  According to the present invention, in each side piece, the large-diameter support part and the small-diameter support part located on both sides with respect to the flange insertion part support pipes having different diameters, and each side piece has an end connected to the connection piece. By doing so, since the entire pipe connection fitting forms a U-shaped piece, the development area before press working can be reduced, and the pipe connection fitting can be obtained by efficiently molding with a small amount of material.

Moreover, about the convex deformation | transformation part of the small diameter support part of a pipe connection metal fitting, it can comprise the straight part, or it can comprise as a bow shape, and the pressing force to the piping supported can be adjusted.
In addition, the connecting piece of the pipe fitting is formed so as to have a convex curve on the inside, or an opening is formed so that the side piece can be easily opened on both sides with respect to the connecting piece, so that it can be attached to the pipe side. Can be easily.
Moreover, it can be set as the introducing | transducing part at the time of attaching to piping by forming the bending part bent outside on each side one end of a piping connection metal fitting.

  A pipe fitting as an example of an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of a pipe connection fitting, FIG. 2 is a front view of the pipe connection fitting, and FIG. 3 is a plan view of the pipe connection fitting.

The pipe fitting 10 according to the present invention is integrally formed by pressing a metal plate in order to connect the large-diameter pipe 80 and the small-diameter pipe 90 each having a flange portion shown in FIG. 10 of the conventional example. It is what is done.
The pipe connection fitting 10 is coupled with a pair of rectangular side pieces 1 and 1 arranged facing each other and an angle of about 90 degrees with respect to the end portions of the side pieces 1 and 1. A square-shaped connecting piece 2 forms a U-shaped piece.
Each side piece 1 is provided with a rectangular flange insertion portion 3 into which a connecting flange with which the flange portions abut is inserted. The flange insertion portion 3 allows a part of each flange portion (connection flange) to be inserted in a state where the large-diameter pipe and the small-diameter pipe are in contact with each other and connected.

  A large-diameter support portion 4 that forms a convex arc portion on the outer side is formed on one side piece 1 a side with respect to the flange insertion portion 3. The large-diameter support portion 4 is sandwiched between a pair of large-diameter support portions 4 in a circular arc shape from both sides when a pipe connection fitting 10 is attached to a connecting flange between pipes. It is something to support.

  Further, a small-diameter support portion 5 serving as a convex deformation portion is formed on the inner side of the flange insertion portion 3 on the other side piece 1b side. The small-diameter support portion 5 formed of a convex deformed portion has a straight portion 5a, and when the pipe connection fitting 10 is attached to a connecting flange between the pipes, the inside of each straight portion 5a of the pair of large-diameter support portions 5 The part is supported so as to be in contact with the pipe diameter of the small diameter pipe from both sides.

  A guide groove 6 that is convex outward is formed at the end of each side piece 1 opposite to the connecting piece 2 in the extending direction of the flange insertion portion 3, and the pipe connection fitting 10 is connected to the connecting flange between the pipes. When the flange insertion portion 3 is mounted, the connecting flange is guided in the guide groove 6 to facilitate mounting.

  According to the structure of the pipe connection fitting described above, the pipe connection fitting 10 includes a pair of rectangular side pieces 1 and 1 and a square connection piece 2 that connects the end portions of the side pieces 1 and 1. Since the U-shaped piece is formed, the metal plate before press processing is a rectangular shape in which both sides are expanded with respect to the connecting piece 2, and there are few wasted parts (parts to be cut off). By making the development area smaller than in the example, the material can be effectively used, and the protrusion after mounting is suppressed to be smaller than the flange diameter (FIGS. 4B and 4D).

Next, a case where pipes are connected using the pipe fitting 10 having the above structure will be described.
When connecting the large-diameter pipe 80 and the small-diameter pipe 90 to each other, as shown in FIG. 4, the flange portion 81 of the large-diameter pipe 80 and the flange portion 91 of the small-diameter pipe 90 are brought into contact with each other to connect the pipes. The metal fitting 10 is inserted into the contact position of the flange portion from the guide groove 6 side (FIGS. 4A and 4C).
At this time, since the guide groove 6 is provided, it can be easily inserted, and when the abutting portions of the flange portions 81 and 91 are guided to the guide groove 6, the pipe connection fitting 10 can be easily inserted along the connecting flange. And
Further, due to the spring action with the connecting piece 2 as a base, both side pieces 1 are spread so that the abutting portions of the flange portions are fitted and arranged in the flange insertion portion 3, and the large-diameter support portion of the side piece 2 4 (convex arc portion) supports the large-diameter pipe 80, and the linear portion 5a of the small-diameter support section 5 (convex deformable portion) supports the small-diameter pipe 90, so that the contact state is maintained (FIG. 4 ( b) (d)).

FIG. 5 shows another example of the pipe fitting of the present invention, and the same reference numerals are given to the parts having the same configuration as in FIGS.
The pipe connection fitting 10 of FIG. 5 is different from the pipe connection fitting 10 of FIG. 1 in the configuration in which the rectangular opening 7 is formed in the connecting piece 2. Other configurations are the same as those of the pipe fitting 10 shown in FIGS. By forming the opening 7 in the connecting piece 2, the side piece 1 can be easily opened on both sides with respect to the connecting piece 2, and mounting on the piping side can be facilitated.

FIG. 6 shows another example of the pipe fitting of the present invention, and the same reference numerals are given to the parts having the same configuration as in FIGS.
The pipe connection fitting 10 of FIG. 6 is different from the pipe connection fitting 10 of FIG. 1 in the configuration in which the connecting piece 2 is formed to have a convex curve 2a inside. Other configurations are the same as those of the pipe fitting 10 shown in FIGS. By forming the connecting piece 2 in the convex curve 2a, the side piece 1 can be easily opened on both sides with respect to the connecting piece 2 and can be easily attached to the pipe side.

FIG. 7 shows another example of the pipe fitting according to the present invention, and parts having the same configurations as those in FIGS. 1 to 3 are denoted by the same reference numerals.
The pipe connection fitting 10 of FIG. 7 is different from the pipe connection fitting 10 of FIGS. 1 to 3 in the shape of the small diameter support portion 5 that supports the small diameter pipe 90. That is, the small-diameter support portion 5 of the pipe fitting 10 shown in FIGS. 1 to 3 has the straight portion 5a. However, in this example, the entire convex deformation portion of the small-diameter support portion 5 is formed into an arcuate shape 5b. Forming. By setting it as the arcuate shape 5b, the convex height can be set high with respect to the linear part 5a, and it can respond also to the use with a large level | step difference of piping.

FIG. 8 shows another example of the pipe fitting of the present invention, and the same reference numerals are given to the parts having the same configuration as in FIGS.
The pipe connection fitting 10 in FIG. 8 is different from the pipe connection fitting 10 in FIG. 1 to FIG. 3 in the configuration in which a bent portion 8 that is bent outward is formed at the end of each side piece 1. By forming a bent portion 8 that bends outward at the end of each side piece 1 of the pipe connection fitting, it is possible to facilitate the mounting by using this portion as an introduction portion when mounting to a connecting flange between pipes. it can.

  According to the present invention, in the pipe connection fitting, the development area before press working can be reduced, it can be efficiently molded with a small amount of material, and since it is made compact, an energy saving effect can be obtained.

It is an isometric view explanatory drawing of the pipe connection metal fitting of an example of an embodiment of the invention. It is front explanatory drawing of a pipe connection metal fitting. It is plane explanatory drawing of a pipe connection metal fitting. (A)-(d) is for demonstrating the procedure in the case of attaching a pipe | tube coupling metal fitting to the connection part of large diameter piping and small diameter piping, (a) And (b) is a connection side explanatory drawing, c) and (d) are connection plane explanatory views. It is a plane explanatory view of a pipe connection metal fitting showing other examples of an embodiment of the invention. It is front explanatory drawing of the pipe connection metal fitting which shows the other example of embodiment of this invention. It is front explanatory drawing of the pipe connection metal fitting which shows the other example of embodiment of this invention. It is front explanatory drawing of the pipe connection metal fitting which shows the other example of embodiment of this invention. It is perspective explanatory drawing of the conventional piping connection metal fitting. FIG. 10 is an explanatory cross-sectional view of a connection structure showing a connection structure when the pipe connection fitting of FIG. The arc-shaped part for demonstrating the reason why twist arises in the conventional pipe connection metal fitting is shown, (a) is a side explanatory view before press working, (b) is a cross-sectional explanatory view of each arc piece after press working (C) is side explanatory drawing after press work. It is an isometric view explanatory drawing of the piping connection metal fitting which the inventors proposed. FIG. 13 is an explanatory plan view showing a developed state of the pipe connection fitting shown in FIG. 12 before press processing.

Explanation of symbols

1 ... side piece,
2 ... connecting piece,
3 ... flange insertion part,
4 ... Large diameter support part,
5 ... small diameter support part,
6 ... Guide groove,
7 ... opening,
8 ... Folding part,
10 ... Piping fittings,
11 ... connecting piece,
12 ... side piece,
13 ... fitting hole,
15 ... an arcuate support,
16 ... sidewall,
17 ... curved part,
80 ... Large diameter piping,
81 ... flange part,
90 ... Small diameter piping,
91 ... Flange part.

Claims (6)

Pipe connection fittings that are integrally formed to connect large-diameter pipes and small-diameter pipes each having a flange portion,
While forming a U-shaped piece with a pair of side pieces arranged facing each other and a connecting piece connecting the end portions of each side piece,
Provided with each side piece is a flange insertion portion into which a connecting flange with which the flange portions abut each other is inserted,
Forming a large-diameter support portion that is a convex arc portion on the one side one side with respect to the flange insertion portion,
A pipe fitting having a small-diameter support portion which is a convex deformation portion on the inner side on the other side of the flange insertion portion. The pipe fitting according to claim 1, wherein the convex deformation portion of the small-diameter support portion has a straight portion. The pipe connection fitting according to claim 1, wherein the convex deformation portion of the small-diameter support portion has a bow shape. The pipe fitting according to claim 1, wherein the connecting piece is formed to have a convex curve inward. The pipe fitting according to claim 1, wherein an opening is formed in the connecting piece. The pipe connection fitting according to claim 1, wherein a bent portion that bends outward is formed at each side piece end.

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