JP3133261B2 - How to attach the drain pipe fitting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to relates to a method of mounting the drain pipe connection mouth ring member for connecting the drain pipe to the trough portion disposed on the roof or the like of a building.

[0002]

2. Description of the Related Art As a drain pipe connection fitting for connecting a drain pipe to a gutter fitting arranged on a roof of a building or the like,
Japanese Unexamined Patent Application Publication No. 8-270159 is known. This is because the peripheral edge of the drain port 17 with a sealing material 17 added between the flange 4 of the inner cylinder 5 fitted into the drain hole of the gutter 1 and the flange 6 of the outer cylinder 7 fitted to the inner cylinder 5. And a bolt receiver 1 provided inside the inner cylinder 5.
2, a bolt 8 is passed through, and the bolt 8 is screwed into a nut 15 attached to the inside of the outer cylinder 7 so that the flanges 4 and 6 press the peripheral portion of the drainage port. The fittings are being installed.

[0003]

However, in the above-mentioned fitting for drain pipe connection, since many parts are used, processing and mounting work are troublesome, and an operator may hit the bolt head during the work. There is a danger of stumbling and there is a disadvantage that the cost is high.

[0004] The present invention to solve the drawbacks, the structure is very simple, safe, yet cost as its object to provide a method of mounting the drain pipe connection mouth ring tool can be kept low.

[0005]

In order to solve the above-mentioned problems, a method for mounting a drain pipe connection fitting according to the present invention comprises:
A method of mounting a drain pipe connection fitting in which a bottom part of a gutter part is formed of a metal surface material and a cylindrical fitting for connecting to a drain pipe is provided below a drain port formed in the bottom part. A receiving groove for receiving a metal ring is formed on the upper edge of the large-diameter portion having an outer diameter slightly smaller than the inner diameter of the mouthpiece. A main mold having a fitting projection fitted into the pilot hole, and a receptacle slidably fitted to the outside of the main mold to receive the fitting and the gutter part surface material and to be urged upward. A surface material for the gutter part on the receiving mold with the ring of the main mold by pushing the base fitting downward so as to fit into the large diameter portion of the main mold against the urging force of the receiving mold. Squeeze the periphery of the pilot hole for the drain hole into the inside of the fitting, and further narrow the inside of the opening It characterized in that for press fitting the ring.

The main mold and the receiving mold are arranged upside down, and the fitting is pushed upward instead of being pushed downward, so that the gutter portion surface material on the receiving mold is formed by the ring of the main mold. Alternatively, the peripheral edge of the pilot hole for drainage may be drawn inwardly to the inside of the fitting, and the ring may be press-fitted inside the opening edge formed by further narrowing.

[0007]

FIG. 1 is a sectional view of a fitting for connecting a drain pipe, and FIG. 2 is an exploded perspective view thereof. In the figure, reference numeral 1 denotes a gutter portion of the drain pipe connection fitting. The gutter portion 1 is provided on the roof of a building, and is formed into a gutter shape by bending a surface material a such as a stainless steel plate or an iron plate. A drain port 2 is provided at an end of the gutter section 1.
Is connected to a drain pipe 4 for drainage via a fitting 3.

The mouthpiece 3 is a tubular body made of stainless steel, and is formed in such a size that the opening edge 2a of the gutter portion 1 is fitted inside the fitting and the drain pipe 4 is fitted outside, and the inside of the fitting near the upper end is formed. An annular concave groove 5 is formed in the lower portion, and a drain pipe 4 for drainage is fitted to the outside of the lower portion and connected so as not to be detached by welding or bonding.

Reference numeral 6 denotes a metal ring. The ring 6 is press-fitted into the opening edge 2a of the gutter portion 1 and its diameter is increased at the concave groove 5 provided in the mouthpiece 3. And the base 3 are firmly connected to each other, and a round bar is formed in an annular shape so that a suitable gap 6a can be formed at the abutting portion at both ends.

When the drain pipe 4 is connected, the drain pipe 4 is fitted to the lower part of the fitting 3 and is connected by welding or bonding, so that the connection of the drain pipe 4 to the gutter 1 can be simplified.

In order to prevent water from leaking out of the fitting 3 during flooding, it is preferable to seal between the fitting 3 and the opening edge 2a.

[0012] Next, FIGS. 3-5 is an explanatory view of a method of attaching the drain pipe connection port fitting. The drain pipe connection fitting is attached by a mold, and the mold includes a main die 8, a receiving die 9, a center die 10, and a pressing die 11.

The main die 8 is disposed on a base 13 provided with a central shaft 12 and has a receiving groove for receiving the ring 6 at an upper end edge of a large diameter portion 14 having an outer diameter slightly smaller than the inner diameter of the base 3. 15 is formed in a stepped shape, and furthermore, a fitting convex portion 17 which fits into a drain hole pilot hole 16 of a metal gutter face plate a at an inner upper portion thereof.
Are formed in a step shape. The receiving groove 15 has play so as to allow the ring 6 to have a smaller diameter.

The receiving die 9 is an annular member which is slidably fitted to the outside of the main die 8, and is formed on its upper end surface so as to receive the gutter part surface material a and the mouthpiece 3. Spring holder 1 for mold 8
8 is always urged upward by a spring 19. An engagement groove 20 for accommodating the expanded ring 6 is formed in a stepped shape on the inner peripheral surface of the upper end. The engaging groove 20 is formed so as to face the receiving groove 15 of the main die 8, and the groove bottom surface 20a of the engaging groove 20 is formed obliquely so as to be lower outward.

The center mold 10 has a face material a fitted to the receiving mold 9.
Is an annular member slidably fitted to the fitting projection 17 of the main mold 8 from above, the outer diameter of which is formed to be substantially the same as the inner diameter of the mouthpiece 3.

The pressing die 11 is formed to have a diameter larger than that of the base 3 and has a convex portion 21 fitted in the center of the base 3 at the center thereof.

Next, when manufacturing the outlet fittings for drain pipe connected by the mold, first housing arranged a ring 6 in receiving die 9 engaging groove 20 of the as shown in FIG. 4, face material a thereon Is placed. The ring 6 is a ring-shaped metal rod-shaped material, and is a split ring with an interval between both ends. The outer diameter of the ring 6 is set to be slightly larger than the inner diameter of the fitting 3. The drain hole pilot hole 16 of the face material a is fitted with the fitting projection 17 of the main die 8.
To be fitted. The center mold 10 is fitted to the fitting protrusion 17 from above the face material a, and the fitting 3 is fitted outside the center mold 10. Then, the central convex portion 21 of the pressing die 11
The fitting 3 is moved downward while the fitting 3 is fitted in the fitting 3. Thereby, the face material is pressed onto the receiving mold 9 by the fitting 3. Since the receiving die 9 is supported by the strong spring force of the spring 19, the face material a is strongly sandwiched and fixed between the base 3 and the receiving die 9. By pressing down the fitting 3 with a stronger force, the fitting 3 is
The main die 8 together with the receiving die 9 and the ring 6 against the urging force of
Is pushed so as to fit into the large-diameter portion 14. On the other hand, the receiving groove 15 of the main die 8 does not move. When the base 3 is still moved downward, the face material a also descends. However, since the ring 6 is engaged with the lower surface of the peripheral edge of the drain hole 16 of the face material a, the ring 6 is It will move upward relative to a. For this reason, the periphery of the drain hole pilot hole 16 of the gutter part surface material a fixed on the receiving die 9 is forcibly squeezed and squeezed by the ring 6, and the ring 6 is placed inside the fitting 3. It is pushed in so as to reduce the diameter, and moves from the engaging groove 20 of the receiving die 9 to the receiving groove 15 of the main die 8. Further, the peripheral edge of the pilot hole 16 is narrowed to the inside of the fitting 3 to form a short tubular opening edge 2a, and the ring 6 is pressed into the narrowed opening edge 2a. The ring 6 is forcibly contracted so as to have a smaller diameter, and then expands in a groove 5 formed on the inner peripheral surface of the fitting 3, and is strongly fitted in the groove 5. In this way, the base 3 is firmly connected to the face material a. The drain pipe may be fitted and fixed to the fitting 3.

When the fitting 3 is moved downward,
Since the face material a is strongly sandwiched and fixed between the base 3 and the receiving die 9 supported by a strong spring force, no wrinkles occur when the face material a is squeezed.

[0019] Incidentally, the lower inner circumferential surface of the cap member 3 if by applying the caulk, the between the cap member 3 and the face material a is satisfactorily sealed.

[0020] This connection, not round bar shape as in the above example as a ring 6, as shown in FIG. 6, the outer peripheral edge 6
If a has a sharply hanging shape, the outer peripheral end 6a bites into the face material a, so that a good seal can be obtained without the caulking material.

Further, in order to obtain the above-mentioned drain pipe connection fitting, it is not always necessary to push the fitting 3 downward as described above. The above main die 8 and the receiving die 9 are arranged upside down, and the base 3 is pushed upward, so that the ring 6 of the main die 8 allows the drainage pilot hole of the gutter face material a on the receiving part. The peripheral edge of the drainage hole 16 may be sharpened to the inside of the fitting 3, and the ring 6 may be press-fitted inside the peripheral edge of the raised pilot hole 16 for drainage. At this time, the face material a is pressed downward by the main die 8, so that the pressing die 11 as described above is not necessary.

Furthermore, the center mold 10 is intended to determine the center of the cap member 3, such positioning means is not necessarily limited to those located on the inside of the cap member 3. It may be arranged on the outside, and if the fitting 3 can be pushed in while the center of the fitting 3 is determined by the pressing die 11, there is no need to provide a separate positioning means.

[0023]

According to the invention of claim 1 or the invention of claim 2 according to the present invention, the lower to fit large diameter portion of the main mold against the biasing force of the type receiving a cap member (claim 1 In the case of the invention) or upward (in the case of the invention of claim 2 ), the peripheral edge of the drain hole of the gutter part surface material on the receiving mold is pressed with the main ring so as to squeeze the fitting. Since the ring is pressed into the inside of the opening edge formed by further narrowing down the inside, the fitting is lowered (in the case of the first aspect of the invention) or upward (in the case of the second aspect of the invention) Thus, the drain pipe connection fitting can be obtained easily and at low cost.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view showing a drain pipe connection fitting according to the present invention.

FIG. 2 is an exploded perspective view of a drain pipe connection fitting.

FIG. 3 is an explanatory view of a positional relationship between a mold and a material for manufacturing a drain pipe connection fitting.

FIG. 4 is a longitudinal sectional view showing a state in which a ring, a face material, and a base are set in the mold.

FIG. 5 is an explanatory view of an operation mode of the mold.

FIG. 6 is a cross-sectional view of another ring example.

[Explanation of symbols]

 a Surface material 1 Gutter 2 Drain port 2a Opening edge 3 Metal fitting 4 Drain pipe 6 Ring 8 Main mold 9 Receiving mold 14 Large diameter section 16 Pilot hole 17 Fitting convex section

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hachiro Tsuji 848 Kamitomi, Miyoshi-cho, Iruma-gun, Saitama Prefecture Miyoshi Manufacturing Co., Ltd. (56) References JP-A-8-270159 (JP, A) −41787 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F16L 19/08 E04D 13/04

Claims (2)

(57) [Claims] A bottom portion of the gutter portion is formed of a metal surface material;
Connect the drain pipe below the drain formed at the bottom.
Of the drain pipe connection fitting with the cylindrical fitting
A method of mounting, the method having a large outer diameter slightly smaller than the inner diameter of the fitting.
A receiving groove is formed on the upper edge of the diameter part to receive a metal ring
And a drain hole on the inside of the gutter
A main mold with a mating projection to fit, and sliding outside the main mold
When the fitting and the gutter part face material are received
A receiving die urged upwardly, and a large-diameter portion of the main die, wherein the fitting is pressed against the urging force of the receiving die.
Press down so that it fits into
The bottom edge of the drain hole of the surface material for the gutter on the receiving mold
Squeeze it into the inside of the fitting and squeeze it further
A method for mounting a drain pipe connection fitting, wherein the ring is pressed into the inside of the formed opening edge . 2. The main mold and the receiving mold according to claim 1 are turned upside down.
And instead of pushing the fitting down,
On the receiving mold with the ring of the main mold
The edge of the pilot hole for the drain of the gutter section
Squeezing the inside of the fitting
A method for mounting a drain pipe connection fitting, wherein the ring is pressed into the inside of an edge .