JP4323727B2 - Overflow prevention device for roof drain - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an overflow prevention device used for restricting the flow rate of a roof drain.
[0002]
[Prior art]
If there is a large amount of rainfall exceeding the allowable flow rate of the sewage mains in the area due to heavy rain or typhoon, limit the amount of rainwater flowing into the roof drain from the surrounding open-air floor, and temporarily There is known a roof drain overflow prevention device used for storing rainwater on a balcony and delaying the outflow to a sewage main.
[0003]
As shown in FIG. 9, the overflow prevention device a includes a cover body d having a required height that surrounds a drain tray c of a roof drain b disposed on an open floor surface f such as a rooftop or a balcony. In the lower part of the cover body d, a water passage e is formed for restricting the amount of rainwater flowing into the drain tray c. Here, the height of the cover body d is set according to the depth of rainwater that can be temporarily stored at the installation location, and the width of the water passage e is predetermined for the rainwater flowing into the drain tray c. It is set to a size that can be limited to the flow rate of.
[0004]
[Problems to be solved by the invention]
By the way, in the conventional overflow prevention apparatus a, since the height dimension of the cover body d and the width dimension of the water flow opening e differ for every construction site, the instruction of each dimension is received at the time of an order, and according to this instruction | indication dimension I had to make it each time. For this reason, there was a problem that productivity was bad and time was required for delivery.
[0005]
It is an object of the present invention to provide a roof drain overflow prevention device capable of solving such a conventional problem.
[0006]
[Means for Solving the Problems]
The present invention comprises a drain pan and a drain pipe section coupled to the drain pan, a drain body disposed on the outdoor floor, and fixed to the upper surface of the drain pan and laid on the outdoor floor. It is used for a roof drain consisting of a waterproof layer presser that holds the edge of the waterproofing layer and a strainer disposed on the waterproofer presser. In the overflow prevention device which is surrounded by the cover body provided and restricts the amount of rainwater flowing into the drain tray by the water passage port,
The cover body is composed of a fixed cover having a water passage in the lower part and a movable cover fitted to the fixed cover so as to be movable up and down, and the movable cover is held at a required height position by a holding means. Makes it possible to adjust the height of the cover body,
Further, the holding means is screwed at its lower end to the waterproof layer presser, and is installed on the outer side of the cover body, and is inserted into a support edge protruding from the movable cover, A roof drain overflow prevention device comprising a nut that is screwed to fix a support edge of a movable cover so that the position of the movable cover can be adjusted .
[0007]
Here, the water passage opening of the cover body is formed to have a necessary and sufficient width that can correspond to the assumed maximum indication size, while the slide lid is formed on both sides of the sliding guide disposed on both sides of the water passage opening. It is possible to propose a configuration in which the slide cover is provided so as to be able to advance and retreat, and the slide lid is fixed to an arbitrary position with a fixing screw. In this way, by adjusting the opening degree of the water passage through the forward / backward operation of the slide lid, a flow rate adjustment function applicable to all construction sites can be provided.
[0008]
Further, the cover body is divided into a fixed cover and a movable cover that is fitted to the fixed cover so as to be movable up and down, and is provided to be extendable and retractable, and the movable cover is held at a required height position by holding means. Thus, the height of the cover body can be adjusted . Thereby, the height of a cover body can be adjusted according to the depth of the rain water which can be stored in an installation place, and the height adjustment function which can be applied to all the construction sites will be comprised. Here, as the holding means for holding the movable cover at a required height position, a screw rod standing on the side of the cover body and inserted through a support edge protruding from the movable cover, and the screw rod And a nut that fixes the support edge of the movable cover so that the position of the movable cover can be adjusted .
[0009]
And, as mentioned above, by providing the overflow prevention device with height adjustment function and flow rate adjustment function, mass production of the same product in advance instead of the conventional production method of producing according to the indicated dimensions after receiving an order. Therefore, productivity is good and delivery time can be greatly shortened.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1 or FIG. 6, the roof drain overflow prevention device according to the present invention comprises a drain pan 3 and a drain pipe 5 coupled to the drain pan 3, and is provided on the outdoor floor surface f. The drain tray 3 of the installed roof drain 1 is surrounded by a cover body 14 provided with a water passage 21 at the lower portion, and the amount of rainwater flowing into the drain tray 3 is limited by the water passage 21. The overflow prevention device 13 is characterized in that the cover body 14 is provided with a slide lid 22 capable of adjusting the opening degree of the water passage 21. The cover body 14 is divided into a fixed cover 15a and a movable cover 15b fitted to the fixed cover 15a so as to be movable up and down, and is provided to be extendable and retractable. The movable cover 15b is provided at an appropriate height position by the holding means. It is characterized in that the height of the cover body 14 can be adjusted by holding.
[0011]
The first embodiment of the present invention will be described below with reference to FIGS. The overflow prevention device 13 in this embodiment is configured to be applicable to the roof drain 1 for vertical drainage. As shown in FIG. 1, the drain main body 2 of the roof drain 1 includes a drain drain 3 that is coupled downwardly so as to surround a circular drain tray 3 and a drain hole 4 that is open at the center of the drain tray 3. The pipe part 5 is provided, and it is embed | buried under the flat outdoor floor surface f, such as a rooftop and a balcony. On the upper surface of the drain tray 3, a waterproof layer presser 6 that sandwiches the edge of a sheet waterproof layer (not shown) laid on the open-air floor surface f is provided with a screw rod 7 a erected on the drain tray 3. The strainer 8 is fixed by a nut 7b screwed on the screw rod 7a, and a strainer 8 having a large number of narrow water passages 9 is disposed on the waterproof layer presser 6. The strainer 8 is attached to the drain body 2 via the waterproof layer presser 6 by fixing the lower flange 10 to the waterproof layer presser 6 with screws 11.
[0012]
A drain pipe 12 is connected to the drain pipe portion 5 of the drain body 2 by fitting the drain pipe portion 5 with an upper end. As a result, rainwater flowing into the drain tray 3 from the surrounding open-air floor surface f through the narrow water passage gap 9 of the strainer 8 can be drained from the drain hole 4 into the vertical pipe 12. ing.
[0013]
On the other hand, the overflow prevention device 13 in this embodiment includes a cylindrical cover body 14 that surrounds the drain tray 3. The cover body 14 is divided into a fixed cover 15a and a movable cover 15b having a slightly smaller diameter than the fixed cover 15a. The cover body 14 is fitted into the fixed cover 15a so as to be movable up and down. 14 is made extendable. The fixed cover 15a is provided with a plurality of support edges 16 protruding outward from the lower end thereof at equal intervals along the circumferential direction. The upper end of the movable cover 15b is connected to the support edges 16 and 16a. A plurality of support edges 17 are formed at positions that coincide vertically. Further, on the side of the cover body 14, a plurality of screw ridges 18 respectively inserted into the pair of upper and lower support edges 16 and 17 are screwed at the lower ends to the waterproof layer presser 6 and are erected. Has been. Then, the fixing cover 15 a is fixed to the waterproof layer presser 6 by the tightening action of the nut 19 screwed to the screw rod 18 at the upper position of the lower support edge 16. Further, the support edge 17 is clamped and fixed so that the position can be adjusted by the tightening action of a pair of nuts 20a and 20b respectively screwed to the screw rod 18 at the upper and lower positions of the upper support edge 17. The screw rod 18 and the nuts 20a and 20b constitute a holding means for holding the movable cover 15b at a required height position, whereby the height of the cover body 14 can be adjusted. Yes. Note that the maximum height of the cover body 14 shown in FIG. 4 is set to be a necessary and sufficient height that can correspond to the maximum indicated dimension assumed in the conventional order manufacturing.
[0014]
A plurality of water passages 21 are opened at equal intervals along the circumferential direction at the lower part of the fixed cover 15a constituting the cover body 14, and each water passage 21 has a slide for adjusting the degree of opening. A lid 22 is provided. Here, the water inlet 21 is set to have a necessary and sufficient width that can correspond to the maximum indicated dimension assumed in the conventional order production. As shown in FIGS. 2 and 3, sliding guides 23, 23 having a crank section are arranged on both the left and right sides of each water passage 21 so as to face each other, and the sliding guides 23, 23 have a rectangular shape. By inserting the left and right side edges of the slide lid 22, the slide lid 22 can be advanced and retracted in the vertical direction. Further, the slide lid 22 includes a fixing screw 24 that is screwed in from the front side, and by pressing the tip of the fixing screw 24 protruding to the back side to the fixing cover 15a, as shown in FIG. It can be fixed at any height.
[0015]
In such a configuration, when the roof drain 1 is constructed, the allowable flow rate of the sewage main in that area is taken into consideration, and the opening of the water passage 21 is opened through the vertical movement of the slide lid 22 and the fixing operation by the fixing screw 24. By adjusting the degree, it is possible to limit the rainwater flowing into the drain tray 3 from the water passage 21 to a predetermined flow rate. Moreover, the height of the cover body 14 can be adjusted according to the depth of the rainwater which can be stored in the installation place by raising / lowering operation of the movable cover 15b, and holding operation by the holding means.
[0016]
FIGS. 6-8 shows a 2nd Example, The overflow prevention apparatus 13 in this Example is comprised so that it can apply to the roof drain 1 for horizontal pulling drainage. Here, as shown in FIG. 6, the drain main body 2 of the roof drain 1 for horizontal drainage has a drain receiving tray 3 having a substantially L-shaped cross section and a drain pipe portion 5 coupled backward from the drain receiving tray 3. The floor part x and the wall part y are embedded, and it is embed | buried under the open-air floor surface f of corner parts, such as a rooftop and a balcony. On the drain pan 3, a waterproof layer presser having a substantially L-shaped cross section sandwiching an edge of a sheet waterproof layer (not shown) laid across the open surface f of the floor x and the rising surface of the wall y 6 is mounted, and the waterproof layer presser 6 is fixed to the drain pan 3 by means of a screw rod 7a erected obliquely on the drain pan 3 and a nut 7b screwed on the screw rod 7a. ing. Further, on the waterproof layer presser 6, a strainer 8 having a large number of narrow water passages 9 and having an inclined front part is disposed, and the strainer 8 has an upper flange. 10 is fixed to the waterproof layer presser 6 with screws 11, and is attached to the drain main body 2 via the waterproof layer presser 6.
[0017]
In addition, a base portion of a soot tube 12 that extends through the wall portion y and extends outward is screwed to the drain pipe portion 5 that is coupled rearward from the drain tray 3. As a result, rainwater flowing into the drain receiving tray 3 from the surrounding open-air floor surface f via the strainer 8 can be poured into the vertical pipe 12 and drained outward.
[0018]
On the other hand, as shown in FIG. 7, the overflow prevention device 13 in the second embodiment includes a cover body 14 having a U-shape in a plan view, and the drain body 3 has a rectangular horizontal shape by the cover body 14. The edge is surrounded. The cover body 14 is divided into a U-shaped fixed cover 15a and a movable cover 15b which is also U-shaped and slightly smaller than the fixed cover 15a, and the movable cover 15b is fitted in the fixed cover 15a so as to be movable up and down. By doing so, the cover body 14 can be expanded and contracted. On both the left and right sides of the cover body 14, as shown in FIG. 8, there are respectively provided screw rods 18 with their lower ends screwed to the waterproof layer presser 6 and are erected, as in the first embodiment. The fixing cover 15a is fixed to the waterproof layer presser 6 by inserting the screw rod 18 into the support edge 16 protruding from the lower end of the fixing cover 15a and tightening it with the nut 19. Further, the screw cover 18 is inserted into the support edge 17 protruding from the upper end of the movable cover 15b and tightened with the nuts 20a and 20b, whereby the movable cover 15b is held at a required height position and the cover body 14 is secured. The height of can be adjusted.
[0019]
Further, at the lower part of the fixed cover 15a constituting the cover body 14, water inlets 21 are opened on the front surface and the left and right side surfaces, and each of the water outlets 21 has the above-described slide lid for adjusting the degree of opening. 22 are provided. Other configurations are the same as those of the first embodiment, and the same parts are denoted by the same reference numerals and redundant description is omitted.
[0020]
By configuring the overflow prevention device 13 in this manner, even in the overflow prevention device 13 of the corner roof drain 1, the vertical movement operation of the slide lid 22 and the fixing operation by the fixing screw 24 are performed. By adjusting the opening degree of the water inlet 21 through the rain water flowing into the drain tray 3 from the water inlet 21 can be limited to a predetermined flow rate. Moreover, the height of the cover body 14 can be adjusted according to the depth of the rainwater which can be stored in the installation place by raising / lowering operation of the movable cover 15b, and holding operation by a holding means.
[0021]
Note that the roof drain 1 described in both the above embodiments is configured for waterproofing the sheet and for waterproofing the asphalt, and includes the waterproof layer presser 6 but is configured for waterproofing the mortar and waterproofing the coating film. The thing does not have the waterproof layer presser 6. In this case, the screw rod 18 is erected by directly screwing the lower end thereof to the drain tray 3. Moreover, since the screw rod 18 will not change the height after adjusting once the height of the cover body 14 at the time of construction, you may cut off an excess part.
[0022]
【The invention's effect】
As described above, since the present invention is provided with the slide lid 22 that can adjust the opening degree of the water flow port 21 in the cover body 14 constituting the overflow prevention device 13, the overflow prevention device 13 is applied to all construction sites. Possible flow adjustment function can be provided.
[0023]
The cover body 14 is divided into a fixed cover 15a and a movable cover 15b fitted to the fixed cover 15a so as to be movable up and down, and is provided so as to be extendable and retractable. Since the height of the cover body 14 can be adjusted by holding in the position, the overflow prevention device 13 can be provided with a height adjustment function that can be applied to all construction sites.
[0024]
Thus, by providing the overflow prevention device 13 with a height adjustment function and a flow rate adjustment function, the same product is mass-produced in advance instead of the conventional production method of producing according to the indicated dimensions after receiving an order. Therefore, it is possible to improve productivity, and to obtain excellent effects such as significantly shortening the delivery time.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view showing a construction state of an overflow prevention device according to a first embodiment.
FIG. 2 is a plan view of the above-described overflow prevention device.
FIG. 3 is a front view of the above-described overflow prevention device.
FIG. 4 is a partial cross-sectional view of a main part showing a state in which a cover body is adjusted to a maximum height.
FIG. 5 is an operation explanatory view showing a state in which the slide lid is fully opened.
FIG. 6 is a longitudinal side view showing a construction state of the overflow prevention device according to the second embodiment.
FIG. 7 is a plan view of the above-described overflow prevention device.
FIG. 8 is a partially cutaway side view of the above-described overflow prevention device.
FIG. 9 is a longitudinal sectional view showing a construction state of a conventional configuration.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Roof drain 3 Drain tray 5 Drain pipe part 13 Overflow prevention apparatus 14 Cover body 15a Fixed cover 15b Movable cover 17 Support edge 18 Screw rod (holding means)
20a, 20b Nuts (holding means)
21 Water outlet 22 Slide lid f Open-air floor

Claims (2)

A drain body having a drain tray and a drain pipe coupled to the drain tray, a drain main body disposed on the outdoor floor, and a sheet waterproofing layer fixed on the upper surface of the drain tray and laid on the outdoor floor Cover body comprising a waterproof layer presser that holds the edge of the waterproof layer and a strainer disposed on the waterproof layer presser, and the drain receiving tray is provided with a water passage at the bottom. In the overflow prevention device that limits the amount of rainwater flowing into the drain pan through the water outlet,
The cover body is composed of a fixed cover having a water passage in the lower part and a movable cover fitted to the fixed cover so as to be movable up and down, and the movable cover is held at a required height position by a holding means. Makes it possible to adjust the height of the cover body,
Further, the holding means is screwed at its lower end to the waterproof layer presser, and is installed on the outer side of the cover body, and is inserted into a support edge protruding from the movable cover, An apparatus for preventing overflow of a roof drain, comprising: a nut that is screwed to fix a support edge of a movable cover so that the position of the movable cover can be adjusted . The overflow prevention device according to claim 1, wherein a slide lid capable of adjusting an opening degree of the water flow port is provided in the water flow port formed in the fixed cover .

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