JPH0142573Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a roof drain device for draining rainwater etc. flowing on a roof.

[Prior art]

Roof drains for roof drainage are often made of cast iron or vinyl chloride resin. However, in the past, no consideration was given to the combination with the waterproof layer, and roof drains were placed separately from the waterproof layer laid on the roof, and asphalt, mortar, etc. were filled in between to fill the gap and make it waterproof. It was necessary to grant For this reason, a great deal of time and effort was required for waterproofing, and moreover, it was difficult to obtain highly reliable water-stopping properties. Regarding this point, the applicant of the present application has previously developed a waterproof structure to eliminate this drawback. (Akira Jitsuka
(Refer to No. 58-165129) However, roof drains made of a soft vinyl chloride resin are used as waterproof sheets and cannot necessarily be easily and reliably adhesively fixed. For this reason, for example, when installing a roof drain made of hard vinyl chloride resin by adhesively fixing it to a waterproof sheet made of soft vinyl chloride resin, use an adhesive to adhere it and hold it down until the adhesive hardens. It was necessary to fix the adhesive with a presser foot, etc., which took time and effort and made it difficult to check the adhesion.

FIG. 1 shows an example of the above roof drain device. This roof drain is a horizontal type made of hard vinyl chloride resin, and the main body has an L-shaped cross section, with an open flange 1 and a drain pipe 2.
The drain pipe 2 penetrates the handrail wall 3,
The flange 1 is attached and fixed to the inside corner of the lower end of the handrail wall 3. On the upper surface of the flange 1, waterproof sheets 5, 5 made of soft vinyl chloride resin, which are laid on the surfaces of the handrail wall 3 and the flat roof 4, extend and are adhesively fixed to the flange 1 surface. A flange presser 6 having a substantially L-shaped cross section is fixed on this adhesive surface by fastening bolts 7, and the waterproof sheets 5, 5 are clamped and fixed between the flange 1 and the flange 1. That is, in order to firmly fix the roof drain made of hard vinyl chloride resin and the waterproof sheet made of soft vinyl chloride resin, a holding member such as the flange holding member 6 is required.

[Purpose of invention]

This idea was devised in view of the above circumstances, and its purpose was to be able to firmly integrate the waterproof sheet and the roof drain, to ensure that the integration was secured by adhesive at the construction site, and to have extremely high water-stopping properties. We propose a roof drain device with excellent efficiency.

[Structure of the idea]

This roof drain device is a roof drain device in which a flange at the end of a drain pipe is fixed and connected to a roof drain flange portion. The flange at the end of the drain pipe is made of soft vinyl chloride resin.

The following will explain the embodiments shown in the drawings.

FIG. 2 shows a roof drain device of the horizontal type according to this invention, in which the end of a drain pipe 2 is fixed and connected to the flange 1 portion of the roof drain. The flange 1 of this roof drain device has an L-shaped cross section and is made of a laminated material made by laminating soft vinyl chloride resin layers 9, 9 on both surfaces of a steel plate 8 with adhesive. The drain pipe 2 consists of a cylindrical part 2a and a flange part 2b integrally molded using soft vinyl chloride resin, and a liner 2c made of hard vinyl chloride resin inside the cylindrical part 2a.
are arranged and reinforced, and are adhesively fixed and integrated with the flange 1 at the collar portion 2b.

FIG. 3 shows the roof drain installed, with the flange 1 attached and fixed to the inner corner of the lower end of the handrail wall 3. Waterproof sheets 5, 5 made of soft vinyl chloride resin laid on the surfaces of the handrail wall 3 and the flat roof 4 extend to the upper surface of the flange 1, and are adhesively fixed to the soft vinyl chloride resin layer 9 on the upper surface. In the drawing, reference numeral 10 denotes a lid that covers the roof drain opening, and a locking piece 11 made by bending a spring plate into a V shape is attached to the lid. The lid is crimped onto the inner surface using spring elasticity to lock the lid. Further, the flange 1 is fixed to the handrail wall 3 and the flat roof 4 by anchor plugs 12.

[Effect]

This roof drain device has the above structure, and the flange portion of this device has a soft vinyl chloride resin laminated on the surface of a steel plate. Therefore, a waterproof sheet made of soft vinyl chloride resin was bonded with adhesive.
Adhesive fixation can be done extremely easily and reliably in a short time using means such as solvent adhesion or melt adhesion, and it is possible to confirm adhesion on site and perform highly reliable construction. The flange portion has greater rigidity and strength than those made of soft vinyl chloride resin, is less prone to breakage, deterioration, deformation, etc., does not rust, and can be used for a long time. The mounting angle of the flange portion can be easily adjusted, allowing for highly accurate mounting and combination with a waterproof sheet. A laminated material of steel plate and soft vinyl chloride resin can be obtained at low cost and has good workability as a roof drain.

In addition, the collar at the end of the drain pipe that is fixedly connected to the flange is made of soft vinyl chloride resin.
It can be easily and reliably adhesively fixed to the flange surface, and a highly reliable drainage pipe can be constructed with good workability.

[Effect of idea]

This invention is as described above, and this roof drain device exhibits high water-stopping properties and durability, maintains high reliability, and can be installed and constructed with high work efficiency.

This roof drain device can be applied not only to horizontal type roof drains but also to vertical type roof drains.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of a conventional roof drain device, and FIG. 2 is a perspective view of a roof drain according to an embodiment.
FIG. 3 is a longitudinal sectional view of the roof drain device to which the roof drain of FIG. 2 is attached. 1... Flange, 2... Drain pipe, 2a... Cylindrical portion, 2b... Flange, 2c... Liner, 3... Handrail wall, 4... Flat roof, 5... Waterproof sheet, 6...
Flange retainer, 7... Bolt, 8... Steel plate, 9...
... Soft vinyl chloride resin layer, 10 ... Lid, 11
...V-shaped locking piece, 12...Anchor plug.

Claims (1)

[Scope of utility model registration request] A roof drain device in which a flange at the end of a drain pipe is fixedly connected to a flange portion of a roof drain, and the roof drain flange portion is made of a laminated material in which a soft vinyl chloride resin is laminated on the surface of a steel plate, A roof drain device characterized in that the collar at the end of the drain pipe is made of soft vinyl chloride resin.