JPS6243066Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rainwater drainage structure for a porch roof unit for a unit house.

In recent years, housing construction has become increasingly unitized, and a method of appropriately selecting various units manufactured in a factory and combining them on-site has become widely adopted. The entrance porch roof is also prepared as a unit in various designs, and the user selects the one of their choice and installs it on the main building on site.
Rainwater on the porch roof can be drained by attaching a separately prepared eaves gutter to the side of the eaves of the porch roof and connecting it with a vertical gutter or chain gutter, or by directing rainwater to the eaves on the upper surface of the porch roof in advance. A method such as recessing a groove, drilling a drainage outlet at an appropriate position on the bottom of the guide groove at the construction site, arranging a drainage pipe directly below this, and then connecting a vertical gutter or chain gutter. will be adopted. The latter method is better in appearance than the former because the eaves gutters are not exposed on the outside, and has been well received by users. However, the appropriate location for installing the drain pipe is at one of the corners of the porch roof. Although it is only one place, whether any of these falls under this category is determined by the conditions of the drainage system caused by the location and direction of the building, so a drainage pipe is installed in advance when the porch roof unit is manufactured at the factory. It is not appropriate to keep the roof unit in place, and it necessitates the cumbersome work of drilling a hole for installing a drainage pipe in the thickness direction of the roof unit during on-site construction.

The present invention was developed in view of the above, and for a porch roof unit in which a rainwater guide groove is recessed in the upper surface of the eaves, a connecting pipe for arranging a drain pipe at the bottom of the guide groove is installed in the above unit. By pre-installing at least two units vertically within the thickness of the unit during factory manufacturing, the troublesome drilling work during on-site construction can be reduced, and rainwater can be smoothly drained from the connected vertical trough or chain trough. To provide a rainwater drainage structure for a porch roof unit, in which a drainpipe whose shape is devised to reduce the amount of rain can be appropriately connected according to the site conditions.

A preferred embodiment of the present invention will be explained with reference to the drawings. Fig. 1 is a perspective view showing an example of an assembled state of a porch roof unit in which a preferred embodiment of the present invention is adopted, and Fig. 2 is a diagram taken along the line shown in Fig. 1. FIG. 3 is a vertical cross-sectional view along the line of FIG. 1, and FIG. 4 is a view corresponding to FIG. 2 of another embodiment. That is, in the rainwater drainage structure of the porch roof unit of the present invention, in the porch roof unit 1 in which the rainwater guide groove 11 is recessed in the upper surface of the eaves, the rainwater drainage structure is located at at least two corners A and B of the unit 1. Drain ports 12, 12 are opened at the bottom of the guide groove 11, and these drain ports 1
Connecting tubes 3, 3 for drainage are vertically built into the thickness of the unit 1, and one of these connecting tubes 3, 3 has the corner portion corresponding to the connecting tube 3, respectively. A drain pipe 2 inserted through an opening 131 opened in the bottom plate 13 of A is connected, and the upper end of the other connecting pipe 3 is covered with a blind lid 121, and the drain pipe 2 has a small diameter at the lower end. a first cylindrical body 21 having a section 211; and a second cylindrical body 22 having an outwardly facing flange 221 at its lower end, enclosing the small diameter part 211, and coaxially connected to the lower part of the first cylindrical body 21. When connected to the connecting tube 3, the outward flange 221 connects to the opening 131 of the lower plate 13.
It is characterized by being in contact with the lower surface of the periphery. In FIG. 1, a porch roof unit 1 is projected almost horizontally from the side wall W of the entrance area by suitable fixing means, and a rainwater guiding groove 11 is recessed in the upper eaves side of the porch roof unit 1. It is set up. Here, the eave means three sides excluding the fixed portion to the side wall W, and therefore, the guide groove 11 is approximately U-shaped in plan view. For such a roof unit 1, the appropriate location for drainage of rainwater on the top surface is A in the diagram.
Limited to either point B, C or D. Point A or B is particularly suitable when using a chain gutter. In the figure, since there is a drainage basin E directly below point A, water is drained through chain gutter F at point A. The point A, B, C, or D is determined by the location of the drainage basin E at the construction site, and the main points of this invention are A, B, C, or D.
Points B, C and D (A and B when chain gutter F is used)
point) as shown in Figure 2 or Figure 4.
Connecting tube 3 for connecting the porch roof unit 1
The purpose of this is to simplify the drainage construction at the construction site by arranging it in advance during manufacturing, and this will be explained in further detail. That is, at a porch roof unit manufacturing factory, the groove bottoms of the rainwater guiding grooves 11 at points A and B are opened to provide drains 12, 12, and the drains 12, 12 are connected as shown in FIG. A pouch for draining water through a chain gutter F as shown in Fig. 1, in which pipes 3 are vertically arranged and a blind cover 121 (see Fig. 3) is attached to at least one of the drain ports 12, 12. A roof unit 1 is prepared, and a drainage pipe 2 as shown in Figs. 2 and 3 is separately prepared, and the construction is carried out at the construction site (at the factory if the location of the drainage system at the site can be accurately determined in advance). An opening 131 is formed in the bottom plate 13 at point A, the drain pipe 2 is inserted through this opening 131, and the outward facing flange 221 of the drain pipe 2 is inserted into the bottom plate 13.
and is fitted and connected to the connecting tube 3 via an adhesive. At this time, it is a matter of course that the upper part of the drain tube 2 is cut off and adjusted according to the thickness and width of the unit 1, and the first cylindrical body 21 and the second cylindrical body 22 that constitute the drain tube 2 are shown in the figure. Although these are shown as integrally coupled, it is also possible to separate them and connect them by fitting, etc. In this case, the width dimension described above can be adjusted at the fitting connection part of both. Of course. Drain pipe 2 arranged in this way
A water collector F ₁ as shown in the figure is installed directly below the water collector F 1 and a chain gutter F is connected thereto, while a blind cover 121 is placed over the upper opening of the connection tube 3 at point B using adhesive or the like (the third (see figure) and rainwater guide groove 11 of unit 1.
A series of drainage systems from the to drainage basin E is completed.
In FIGS. 2 and 4, a dust remover 121' is further installed at the upper opening of the connecting tube 3, but this is not necessarily required. The connecting tube 3 in the figure consists of two members, upper and lower, which are screwed together and fixed to the drain port 12 from above and below via caulking agent, etc., to facilitate the connection at this part and to prevent rainwater. It is preferably used because it has the effect of completely preventing leakage.

In the case of the porch roof unit 1 having the connecting tubes 3, 3 built-in and vertically installed at both points A and B as in the above configuration, drainage construction at the site is performed by installing the bottom plate 13 at point A as described above. Opening 131 (generally, since the bottom plate 13 is made of wood, drilling the opening is easy), connect and attach the drain pipe 2, water collector F _1, etc., and connect it to the upper end opening of the connecting pipe 3 at point B. is blind lid 121
Since this is done by simply covering the rainwater guide groove 11 with a lid, unlike conventional methods, the bottom of the rainwater guide groove 11 is opened in accordance with the drainage system at the site (generally, the roof board including the guide groove 11 is
(Due to the use of PVC-coated steel plates, etc., this drilling is extremely difficult.) This simplifies the construction work by eliminating the need for such troublesome work.

In addition, although the case where a chain gutter is used has been described above, if a vertical gutter is used, in addition to the points A and B mentioned above, points C or D in the diagram are also suitable as the drainage position, so it is necessary to Even if the connection tube 3 as described above
It is obvious that it is desirable to install it vertically in a built-in state. In addition, when it is possible to employ both a chain gutter and a vertical gutter, it is desirable to vertically install the connecting tube 3 at all of points A, B, C, and D. In this case, the blind cover 12
Needless to say, there should be at least three 1's.

Another key point of the present invention lies in the structure of the drain pipe 2, which is composed of a first cylinder body 21 and a second cylinder body 22 that are vertically and coaxially connected. FIG. 4 shows a case where the two cylinder bodies 21 and 22 have the same diameter and a case where they have different diameters, but since there is no difference in their effects, they will be explained at the same time. The lower end of the first cylindrical body 21 is a small diameter part 211, and the lower part of the cylindrical body 21 is shaped like a funnel that gradually contracts downward. It is set in. In the drain pipe 2 having such a configuration, the guide groove 11
The rainwater from the small diameter portion 21 at the lower end of the first cylindrical body 21
Most of the water is collected in a funnel-shaped portion extending to the water collector F1, and most of the water does not scatter on the inner wall of the second cylindrical body 22, but flows directly into the water collector _F1 connected to the lower part and is drained. Even if a part of it scatters, it will fall down the inner wall of the second cylindrical body 22 and the outer flange 2
The water falls into the water collector F ₁ due to the drainage action of the edge portion of 21. Therefore, rainwater does not wet the bottom plate 13 or penetrate into the porch roof unit 1 at all, and this effect is achieved because the small diameter portion 211 is enclosed within the second cylindrical body 22 and the outward facing flange is closed. 2
21 is brought into contact with the lower surface of the periphery of the opening 131 of the lower plate 13. Incidentally, in conventional drainage structures of this type, a straight drainage pipe was installed between the guide groove and the bottom plate, and the water collector was attached directly to the bottom plate, so rainwater was There was a problem that water could get into the back side of the face plate and inside the unit, causing corrosion, but with the present invention, as mentioned above, there is no such concern and extremely smooth drainage is guaranteed.

As described above, the drainage structure of the porch roof unit of the present invention is such that a connecting tube is installed vertically at an appropriate location for drainage that is predicted in advance at the time of manufacturing the unit, and a compact structure with excellent drainage performance is attached to this connecting tube. By arranging the drainage pipe, on-site construction is extremely simplified, and it also guarantees waterproofness and smooth drainage, so it can be said that its utility value is extremely large.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of an assembled state of a porch roof unit in which a preferred embodiment of the present invention is adopted, Fig. 2 is a vertical sectional view taken along the line of Fig.
The figure is a vertical sectional view taken along the line of FIG. 1, and FIG. 4 is a view corresponding to FIG. 2 of another embodiment. Explanation of symbols, 1...Porch roof unit, 11
... Rainwater guide groove, 12 ... Drain port, 13 ... Bottom plate, 131 ... Opening, 2 ... Drain pipe, 21 ...
First cylindrical body, 211... Small diameter portion, 22... Second cylindrical body, 221... Outward flange, 121... Blind lid, 3...
...Connection tube, A, B...corner part.

Claims (1)

[Scope of utility model registration request] In a porch roof unit in which rainwater guide grooves are recessed in the upper surface of the eaves, drainage ports are opened at the bottoms of the guide grooves located at at least two corners of the unit, and each of these drainage ports has a A drain connection pipe is installed vertically within the thickness of the unit, and one of these connection pipes has a drain pipe inserted through an opening in the bottom plate of the corner portion corresponding to the connection pipe. are connected to each other, and the upper end of the other connecting tube is covered with a blind lid, and the drain tube has a first cylindrical body having a small diameter part at the lower end, an outward facing flange at the lower end, and a blind lid covering the upper end of the other connecting pipe. It consists of a second cylindrical body enclosed therein and coaxially connected to the lower part of the first cylindrical body, and the outward flange is in contact with the lower surface of the opening periphery of the lower plate when connected to the connecting cylinder. A rainwater drainage structure for a porch roof unit characterized by: