JP2008138394A - Drainage implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drainage implement of fine appearance for performing smooth drainage. <P>SOLUTION: The drainage implement 1 comprises a drain pipe 2 and a peripheral collar part 3 made of fiber reinforced plastic and fixedly provided at an opening end face 8 of a tip opening 4 of the drain pipe 2. The peripheral collar part 3 near the tip opening 4 of the drain pipe 2 is formed in a curved surface part 5 enlarged in diameter toward the pipe center C from the tip opening 4. The opening end face 8 of the drain pipe 2 is formed in a tapered face reduced in outer diameter toward the tip opening 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a drainage tool for draining rainwater or the like attached to a floor surface of a building or a through hole in a wall.

  Conventionally, the thing related to this kind of drainage tool is described in the following patent document 1, for example. Such a drainage tool described in the literature is shown in FIG. The drainage tool 51 in FIG. 1A is composed of a straight cylindrical drainage pipe 52 having both ends opened and a peripheral flange 53 projecting outward from one end opening 60 of the drainage pipe 52. ing. An opening end surface 58A of the tip opening 60 is a surface orthogonal to the tube core. The peripheral flange 53 is made of fiber reinforced plastic (so-called FRP), and is fixed from the open end surface 58A of the drain pipe 52 to the outer peripheral surface 59 with an adhesive. The peripheral flange 53 has a flat plate portion 56 formed in an annular plate shape, a rising portion 57 fixed to the outer peripheral surface 59 of the drain pipe 52, and an opening extending radially inward from the flat plate portion 56. It is comprised from the end surface coating | coated part 54 adhere | attached on the end surface 58A. In this drainage tool 51, after the drainage pipe 52 is inserted into the through hole of the floor or wall of the building, the peripheral flange 53 is integrated with the floor or wall together with the fiber reinforced plastic material sheet. ing.

JP 2002-38665 A

  By the way, the drainage tool 51 is formed so that the end surface covering portion 54 of the peripheral flange portion 53 is formed as a corner portion substantially perpendicular to the inner peripheral surface of the drainage pipe 52 in a side sectional view. In addition, the inflow of water into the drain pipe 52 was not smooth. Therefore, it is conceivable to form a rounded curved surface by cutting the end surface covering portion 54 of the peripheral flange portion 53 and the vicinity of the tip opening 60 of the drain pipe 52. However, in order to maintain the mechanical strength and adhesive strength of the drainage tool 51 as a whole to a certain level or more, as shown in the cross-sectional shape shown by a two-dot chain line 61 in FIG. A curved surface can only be formed with a radius of curvature of. With such a small radius of curvature, the curved surface does not satisfy the appearance and smooth water inflow. In this case, since the peripheral flange 53 is fixed only by the outer peripheral surface 59 of the drain pipe 52, there also arises a problem that the adhesive strength is lowered.

On the other hand, a drainage tool 51A shown in FIG. In this drainage tool 51A, the opening end surface 58B of the tip opening 60 is formed into a curved surface that increases in diameter as it approaches the opening edge 62, and the end surface covering that extends from the flat plate portion 56 of the peripheral flange 53 is formed on the surface of the opening end surface 58B. The portion 54B is fixed. That is, the drain pipe 52 is sandwiched from both the inner and outer sides by the rising portion 57 of the peripheral flange portion 53 and the end face covering portion 54B, and is fixed with good adhesive strength.
However, even with the drainage tool 51A configured as described above, there remains a problem that the opening end surface 58B and the end surface covering portion 54B can form only a curved surface having a radius of curvature corresponding to the thickness of the drainage pipe 52. In addition, since the thickness of the drain pipe 52 in the vicinity of the opening edge 62 is thin, there is a problem that the strength of the drain pipe 52 itself is low.

  The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a drainage tool that has a good appearance and can perform smooth drainage.

  In order to achieve the above object, a drainage tool according to the present invention comprises a drainage pipe and a peripheral portion made of fiber reinforced plastic fixed to the tip opening of the drainage pipe. The neighboring peripheral flange portion is formed in a curved surface or an inclined surface that increases in diameter as it moves away from the tip opening in the cylinder center direction.

  Further, the drainage tool according to the present invention comprises a drainage pipe and a peripheral flange made of fiber reinforced plastic fixed to the opening end face of the tip opening in the drainage pipe, and the opening end face of the drainage pipe is the tip. It is formed in the taper surface where an outer diameter becomes small as it approaches an opening.

  The method for manufacturing a drainage tool according to the present invention includes a drainage tool including a drainage pipe and a peripheral portion made of fiber reinforced plastic fixed to the tip opening of the drainage pipe. A method of manufacturing using a mold having a drain pipe support portion to be mounted and a peripheral flange portion molding portion for molding the peripheral flange portion, and the opening end face is tapered so that the outer diameter decreases as it approaches the tip opening. The formed drainage pipe is fitted to the outer peripheral surface of the drainage pipe support portion of the mold, the primer is applied to the opening end face of the fitted drainage pipe, the opening end face of the drainage pipe after applying the primer, and the mold In this case, a fiber reinforced plastic molding material is laid in the peripheral collar part molding part to form the peripheral collar part.

  According to the present invention, the peripheral flange in the vicinity of the tip opening of the drainage pipe is formed on a curved surface or an inclined surface that increases in diameter as it moves away from the tip opening in the cylinder center direction. The inflow can be smoothed to increase the amount of drainage.

  In addition, according to another drainage tool of the present invention, the opening end surface of the drainage pipe is formed into a tapered surface whose outer diameter decreases as it approaches the tip opening, so that the peripheral flange portion is in close contact with the opening end face of the drainage pipe. Can be fixed. Therefore, no gap is generated between the opening end surface of the drain pipe and the peripheral flange portion. As a result, the drainage pipe and the peripheral flange can be fixed with high adhesive force, and a drainage tool having high strength and durability is provided.

  And according to the manufacturing method of the drainage tool which concerns on this invention, the said another drainage tool can be obtained easily by the simple process using an exclusive metal mold | die.

The best mode for carrying out the present invention will be described with reference to the drawings. The embodiment described below is merely an example embodying the present invention, and does not limit the technical scope of the present invention. Here, FIG. 1A is an external view of a drainage tool according to this embodiment of the present invention, FIG. 1B is a front view of the drainage tool of this embodiment, and FIG. 2 shows the drainage tool of this embodiment. FIG.
In each drawing, a drainage tool 1 according to this embodiment includes a drain pipe 2 having a tip opening at both ends and formed in a cylindrical shape, and a pipe diameter direction (tube core and pipe core) from one tip opening 4 of the drain pipe 2. (Orthogonal direction) It is composed of a peripheral flange portion 3 projecting outward, and a primer 14 for adhering the drain pipe 2 and the peripheral flange portion 3.

  The drain pipe 2 may be made of any material as long as it can be used for construction, but here, it is made of, for example, polyvinyl chloride. This drain pipe 2 is composed of a large diameter portion near the tip opening 4 on one end side and a small diameter portion near the tip opening on the other end side. The inner peripheral surface 22 of the large-diameter portion is formed with an inner diameter larger than the inner peripheral surface of the small-diameter portion, and the boundary between these two portions is a step portion 7 that is locked to a mold described later. An outer surface between the opening edge 6 of the tip opening 4 and the outer peripheral surface 9 of the large diameter portion is an opening end surface 8. The opening end face 8 is formed as a tapered surface whose outer diameter decreases as it approaches the tip opening 4, and this tapered surface is a straight inclined surface as seen in a side section.

  The peripheral flange portion 3 is made of fiber reinforced plastic in which glass fibers are dispersed in a polyester resin, and is fixed to the outer peripheral surface 9 connected to the open end surface 8 from the drain pipe 2 via a primer 14. ing. The peripheral flange portion 3 includes a flat plate portion 16 formed in an annular plate shape, a rising portion 17 fixed to the outer peripheral surface 9 of the drain pipe 2, and a curved surface portion interposed between the flat plate portion 16 and the rising portion 17. 5. The inner surface of the curved surface portion 5 is connected to the opening edge 6 of the distal end opening 4 of the drain pipe 2 and is formed into a curved surface that increases in diameter as it moves away from the distal end opening 4 along the cylinder center direction (the direction of the dashed line C, hereinafter the same). Has been. The inner surface of the curved surface portion 5 has a curved surface shape that bulges toward the tube center side.

A procedure for manufacturing the drainage tool 1 configured as described above using a mold will be described with reference to FIG. In this embodiment, a drain pipe 2A in which the opening end surface 8A of the tip opening 4 is formed on a surface orthogonal to the tube core is used (FIG. 3A).
By cutting off the outer corner 20 at the boundary between the opening end surface 8A and the outer peripheral surface 9A of the drain pipe 2A, the drain pipe 2 having the opening end surface 8 and the outer peripheral surface 9 from which the outer periphery of the tip is deleted is manufactured (same as above). (B). The opening end surface 8 is formed into a tapered surface whose outer diameter decreases as it approaches the tip opening 4.

  The mold 10 used for manufacturing the drainage tool 1 includes a cylindrical drainage pipe support portion 11 that is fitted to the inner peripheral surface 22 of the drainage pipe 2 and supports the drainage pipe 2, and a flat plate portion of the peripheral flange portion 3. The peripheral flange part molding part 12 for molding 16 and the curved surface molding part 15 for molding the curved surface part 5 are configured. The upper end surface of the drain pipe support portion 11 is a support end surface 13 on which the step portion 7 of the drain pipe 2 is placed to support the drain pipe 2. The upper surface of the peripheral flange molding part 12 is formed as an inclined surface that descends radially outward from the axis of the drainage pipe support part 11. The inclined surface of the peripheral flange molding part 12 is inclined by an angle θ from the horizontal direction. This angle θ is selected in advance according to the type of material sheet so that the lower surface of the flat plate portion 16 of the peripheral flange portion 3 becomes a horizontal surface when the laid polyester resin is cured and contracted. The curved surface molding portion 15 is formed in a curved surface that increases in diameter with increasing distance from the support end surface 13 along the axial direction of the drainage pipe support portion 11 and is recessed toward the axial center side.

The arrangement relationship between the mold 10 and the drain pipe 2 is such that when the drain pipe 2 is mounted and supported on the drain pipe support portion 11 of the mold 10, the opening edge 6 of the drain pipe 2 is around the mold 10. It is set so as to be separated from the heel part molding part 12 by a predetermined interval. In this embodiment, when the stepped portion 7 of the drainage pipe 2 is supported by the support end surface 13 of the mold 10, the opening edge 6 of the drainage pipe 2 is separated from the peripheral flange part molding part 12 of the mold 10 by a dimension R. It seems to be.
By configuring in such an arrangement relationship, the curved surface molding portion 15 can be provided between the drain pipe support portion 11 and the peripheral flange portion molding portion 12 of the mold 10, and the opening edge 6 and the peripheral flange portion molding portion can be provided. The radius of curvature of the curved surface molding portion 15 can be determined according to the separation dimension R with respect to 12. That is, if the mold 10 is manufactured so as to have a large separation dimension R between the opening edge 6 and the peripheral flange portion molding portion 12, a curved surface molding portion 15 connected to the curved surface portion 5 having a large curvature radius can be obtained.

  Then, the inner peripheral surface 22 of the drain pipe 2 is fitted on the outer peripheral surface of the drain pipe support portion 11 of the mold 10. Then, the step portion 7 of the drain pipe 2 is engaged with the support end surface 13 of the drain pipe support portion 11, and the drain pipe 2 is positioned and supported by the mold 10. Next, the primer 14 is applied by brushing or the like over the opening end surface 8 of the drainage pipe 2 fitted and the outer peripheral surface 9 connected to the opening end surface 8 ((c) in the figure). A fiber reinforced plastic material is laid on the opening end surface 8 and the outer peripheral surface 9 after the primer application and on the peripheral flange molding portion 12 of the mold 10. That is, a glass fiber sheet is spread from the outer peripheral surface 9 of the drain pipe 2 to the opening end surface 8, and further from the curved surface molding portion 15 to the peripheral flange portion molding portion 12 of the mold 10, and a sufficient amount of polyester is placed on the spread glass fiber sheet. Apply the resin solution evenly. Although the said glass fiber sheet may be a general purpose thing, in order to ensure the moldability and intensity | strength more than fixed, you may lay and pile up two or more sheets. The upper surface of the coating layer composed of the glass fiber sheet and the polyester resin solution thus laid is pressed with an air bleeding roller, and is present between the glass fiber sheets or between the glass fiber sheet and the drain pipe 2 or the mold 10. Extract the air to be used. When heat drying with a dryer or air drying with natural ventilation is performed in this state, the polyester resin is cured and the peripheral flange portion 3 is obtained ((d) in the figure). The drainage pipe 2 and the peripheral flange portion 3 manufactured in this manner are extracted from the drainage pipe support portion 11 of the mold 10 and naturally dried, so that the lower surface of the peripheral flange portion 3 becomes horizontal. A tool 1 is obtained.

  The drainage tool 1 obtained in this manner relatively easily is used, for example, on a floor surface 30 of a veranda of a house as shown in FIG. That is, the drainage pipe 2 of the drainage tool 1 is inserted into a vertical through hole (not shown) drilled in the floor surface 30 and used. Alternatively, the drain pipe 2 is inserted into a lateral through hole (not shown) drilled in the wall 31 of the veranda and used.

According to the drainage tool 1 described above, since the curved surface portion 5 is formed on the peripheral flange portion 3, it looks good and does not impair the aesthetics of the outdoor clothing that uses it. Moreover, the inflow of waste water becomes easy and the inflow amount increases. Furthermore, since the curved surface portion is not formed by cutting, the thickness of the drain pipe and the peripheral flange portion is not reduced, so that the drainage tool 1 having high strength can be obtained.
Moreover, since the opening end surface 8 of the drain pipe 2 is formed in a tapered surface whose outer diameter decreases as it approaches the tip opening 4, the glass fiber sheet as a material is spread in a state of being in close contact with the opening end surface 8. Part 3 can be formed. Therefore, a gap (see reference numeral 18 in FIG. 5) does not occur between the opening edge 6 of the tip opening 4 and the material sheet of the peripheral flange 3. Thereby, the drainage pipe 2 and the surrounding flange part 3 can be fixed with high adhesive force, and the drainage tool 1 having high strength and durability can be provided.
Incidentally, when the gap is generated, it goes without saying that the adhesive force between the drain pipe 2 and the peripheral flange portion 3 is lowered, and the polyester resin solution or the primer 14 in the material sheet oozes out into the gap, It may enter between the inner peripheral surface 22 of the drain pipe 2 and the drain pipe support portion 11 of the mold 10. When the polyester resin solution or the like thus enters, it becomes difficult to release the drainage tool 1 after the polyester resin is cured from the mold 10, or the inner peripheral surface 22 of the drainage tool 1 is stained with the cured polyester resin or the like. The appearance may be significantly impaired.

  In addition, in said embodiment, although the drainage tool 1 which has the surrounding collar part 3 of the surface orthogonal to the pipe core of the drainage pipe 2 was shown, this invention is not limited to it. As shown in FIG. 4, for example, a peripheral flange portion 3 </ b> B of a surface orthogonal to the core of the drainage pipe 2 and a peripheral flange portion 3 </ b> C of a plane parallel to the core of the drainage pipe 2 are formed at the tip opening of the drainage pipe 2. The drainage tool 1B which is fixed is also included in the present invention. Such a drainage tool 1B is used with the drainage pipe 2 being inserted into a lateral through-hole 32 formed in the wall 31 of the veranda.

  In the above description, the drain pipe 2 having the opening end face 8 having a tapered surface is used. However, as shown in FIG. 5, a drainage tool 1A using the drain pipe 2A is also included in the present invention. 1 A of this drainage tool is manufactured similarly to the drainage tool 1 (refer FIGS. 1-3) using said metal mold | die 10. FIG. In this drainage tool 1A, since the opening end surface 8A of the distal end opening of the drainage pipe 2A is a surface orthogonal to the pipe core, the peripheral flange part 3A of the drainage tool 1A rises from the curved surface part 5A to the outside of the outer peripheral surface 9A. It must bend with a small curvature at the part leading to the part 17A. Therefore, a gap 18 is formed between the opening edge 6 of the tip opening and the material sheet of the peripheral flange portion 3A. However, since the curved surface portion 5A is formed in the peripheral flange portion 3A, the appearance is good and the effect of facilitating the inflow of drainage can be achieved. The gap 18 may be filled with putty material or the like.

The peripheral flange portion 3 in the vicinity of the distal end opening 4 of the drain pipe 2 is not a curved surface portion 5, but is formed on a conical (straight sectional view) inclined surface whose diameter increases as the distance from the distal end in the cylinder center direction increases. May be.
Further, the tapered surface of the opening end face 8 may be formed as a curved surface that is not conical (straight in a side sectional view) but bulges toward the tube core, or a curved surface that is recessed in a direction away from the tube core.
Further, the drain pipe used in the present invention is not limited to the one having the large diameter part and the small diameter part as described above, and a straight pipe drain pipe as shown in the prior art (see FIG. 6) may be used. Is possible.

(A) is an external view of the drainage tool which concerns on this embodiment of this invention, (b) is a front view of the drainage tool of this embodiment. It is a sectional side view which shows the drainage tool of this embodiment. It is explanatory drawing which shows the procedure which manufactures the drainage tool of this embodiment. It is a usage pattern figure of the drainage tool of this embodiment, and the drainage tool which concerns on another embodiment. It is explanatory drawing which shows the aspect which manufactures the drainage tool of another embodiment. (A) is a side sectional view showing a conventional drainage tool, (b) is a side sectional view showing another conventional drainage tool.

Explanation of symbols

1, 1A, 1B Drainage tool 2, 2A Drain pipe 3, 3A, 3B, 3C Circumferential flange 4 Tip opening 5, 5A Curved surface 8 Open end face (tapered surface)
DESCRIPTION OF SYMBOLS 10 Mold 11 Drain pipe support part 12 Circumference part molding part 14 Primer 15 Curved surface molding part C Dash-dot line

Claims (3)

The drain pipe and the peripheral flange portion made of fiber reinforced plastic fixed to the distal end opening of the drain pipe, and the peripheral flange portion in the vicinity of the distal end opening of the drain pipe is separated from the distal end opening in the cylinder center direction. A drainage tool characterized by being formed on a curved or inclined surface that expands in diameter. A drain pipe, and a peripheral portion made of fiber reinforced plastic fixed to the opening end face of the tip opening of the drain pipe, and the opening end face of the drain pipe has a taper whose outer diameter decreases as it approaches the tip opening. A drainage tool characterized by being formed on a surface. A drainage tool comprising a drainage pipe and a peripheral part made of fiber reinforced plastic fixed to the end opening of the drainage pipe is molded into a drainage pipe support part and a circumference part that are fitted with the end opening of the drainage pipe. A method of manufacturing using a mold having a peripheral mold part to be used, wherein a drain pipe with an opening end surface formed in a tapered shape whose outer diameter decreases as it approaches the tip opening is supported by the mold drain pipe. The fiber reinforced plastic molding material is applied to the opening end face of the drainage pipe that has been applied, and the opening end face of the drainage pipe after applying the primer, and the mold part around the mold A method for producing a drainage tool, characterized in that a circumferential collar portion is formed by laying a wire.

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