JP2002054274A - Modifying roof drain for waterproof layer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a modifying roof drain for a waterproof layer capable of easily and accurately making a level adjustment corresponding to the raised quantity of a new waterproof layer in a modifying drain body used for the raising execution of the new waterproof layer on an existing waterproof layer on an outdoor floor surface arranged with the roof drain. SOLUTION: This modifying roof drain body 8 is provided with a water guide tube section 9 inserted into the drain pipe section 4 of the existing roof drain 2 and a water guide dish section 11 provided around the inflow side end section 10 of the water guide tube section 9. A level adjusting means 15 holding the modifying drain body 8 at the required height position on the existing waterproof layer is arranged on the lower face of the water guide dish section 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof drain for repairing a waterproof layer, which is used when a new waterproof layer is raised on an existing waterproof layer on an open floor provided with a roof drain.

[0002]

2. Description of the Related Art Waterproof layers, such as a waterproof sheet layer, a waterproof asphalt layer, and a waterproof mortar layer, which are laid on the rooftop of a building or an open floor such as a veranda, are damaged or deteriorated with the lapse of time. If it occurs, there is a method of raising concrete by casting concrete of a required thickness on the waterproof layer and laying a new waterproof layer on the concrete to repair the concrete.
In such a repair work for raising the waterproof layer, a repair roof drain is known which is mounted on an existing roof drain provided on an open floor.

As shown in FIG. 6, a drain body a of a conventional roof drain for refurbishment is constituted by a water guide cylinder part b and a water guide tray part c provided at an inflow side end of the water guide cylinder part b. At the time of construction, the water guide tube portion b is inserted into the drain pipe portion e of the existing roof drain d, and the water guide plate portion c is held at an appropriate height position on the existing waterproof layer f. The drain body a of the roof drain for repair is fixed by filling the mortar g in the lower part of the dish c, and then concrete h of a required thickness is poured around the drain body a.

[0004]

By the way, in the above-mentioned conventional structure, the water guide tray c of the drain body a for repair is held at a predetermined height position corresponding to the amount of the raised concrete h. In this case, since a convenient holding means for interposing a piece of wood or the like between the water guide plate c and the existing waterproof layer f is used, there is a problem that an accurate level adjustment corresponding to the amount of concrete h raised cannot be performed. there were. Also,
When the water pipe section b of the drain body a for repair is inserted into the drain pipe section e of the existing roof drain d, a gap s is usually generated between the drain pipe section e and the water pipe section b. When the mortar g is filled in the lower part of the water guide plate c in this state, the mortar g flows down from the gap s. Therefore,
In order to prevent the mortar g from flowing out, the upper part of the gap s is shielded one by one at the construction site using a gum tape j or the like. However, in such a shielding means, a completely watertight state is provided. There are problems that it is difficult to make the shielded state, and that it is troublesome and troublesome, and that work efficiency is poor.

[0005] It is an object of the present invention to provide a roof drain for repairing a waterproof layer which can solve such a conventional problem.

[0006]

SUMMARY OF THE INVENTION The present invention provides a new waterproofing device on a waterproof layer on an open-air floor provided with a roof drain having a receiving portion and a drain pipe portion connected to the receiving portion. It is used when the layer is raised, and a water guide cylinder portion inserted into the drain pipe portion of the existing roof drain, and a water guide tray portion provided around the inflow side end of the water guide cylinder portion. A roof for repairing a waterproof layer, wherein level adjustment means for holding the repair drain body at a required height position on an existing waterproof layer is provided on a lower surface of a water guide plate portion of the constructed drain body. It is a drain.

In this configuration, when the new waterproof layer is raised and constructed, the level adjustment means for holding the modified drain body at a required height position on the existing waterproof layer makes it easy to accurately adjust the level of the modified drain body. It can be carried out.

In the above structure, the level adjusting means includes a plurality of support members disposed on the lower surface of the water guide plate, and a vertically movable screw rod screwed to each of the support members. Can be proposed as a preferred embodiment. In the level adjusting means configured as described above, the structure is simple, and the level of the repair drain main body can be adjusted by a simple operation of turning each screw rod up and down to advance and retreat, and Fine adjustment is also easy.

Further, the present invention raises a new waterproofing layer on a waterproofing layer on an open-air floor provided with a roof drain having a receiving portion and a drainage pipe connected to the receiving portion. Refurbishment comprising a water pipe section inserted into the drain pipe section of the existing roof drain, and a water pipe section provided around the inflow side end of the water pipe section. A roof drain for repairing a waterproof layer, characterized in that a mortar stopper packing for blocking a gap between the drain pipe portion of an existing roof drain and the water pipe portion of the drain body is attached to the drain main body.

[0010] In this configuration, at the time of construction, the water guide tube portion of the repair drain main body is simply inserted from above into the drain pipe portion of the existing roof drain, and the mortar stopper packing attached to the water guide tube portion is used. The gap generated between the drain pipe section of the existing roof drain and the water guide cylinder section of the repair drain main body can be easily shielded. by this,
Since it is not necessary to perform a troublesome work of shielding the gap using a gum tape or the like at the construction site as in the related art, it is not necessary to prevent the mortar from flowing out due to the work at the site, and the work efficiency can be improved.

In the above construction, the mortar stopper packing is constituted by an elastic cylindrical body fitted to the water guide cylindrical section and a plurality of elastic disks provided on the elastic cylindrical body in a vertical direction. The following can be proposed as a preferred embodiment. In the mortar stopper packing configured as described above, the elastic tube body can be easily mounted simply by externally fitting the elastic tube body to the water guide tube portion of the modified drain main body, and the water guide tube is mounted in a state where the packing is mounted. Each of the elastic discs vertically set in the elastic tubular body is inserted into the drain pipe section of the existing roof drain from above so that the width of the gap formed between the water guide pipe section and the drain pipe section is increased. The gaps are individually elastically deformed according to the conditions, and the gaps are individually and independently shielded, so that a nearly perfect watertight shielding state is obtained, thereby reliably preventing the mortar filled in the lower part of the water guide tray from flowing out. can do.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a roof drain for repairing a waterproof layer according to the present invention will be described below with reference to FIGS. The renovation roof drain 1 in this embodiment is configured to be applicable to the existing roof drain 2 for vertical drainage. As shown in FIG. 2, the existing roof drain 2 includes a circular receiving tray 3 and a drain pipe 4 coupled downward from the receiving tray 3, and is used for a rooftop of a building, a veranda, and the like. It is buried and constructed on the flat floor x to be constituted. A sheet-like existing waterproof layer 6 made of a waterproof sheet layer or a waterproof asphalt layer is laid on the open floor 5 of the floor portion x. 3, a drain hole 7 is opened.

On the other hand, as shown in FIGS. 2 and 3, a repair drain main body 8 constituting the repair roof drain 1 has an outer diameter water guide tube portion 9 which can be inserted into the drain pipe portion 4 of the existing roof drain 2. And a circular water guide plate portion 11 provided around the inflow side end portion 10 at the upper end of the water guide tube portion 9. The water guide tube portion 9 and the water guide plate portion 11 are integrally formed by casting. ing.

On the lower surface of the water guide plate 11, there are three mounting step portions 12 at different positions of approximately 120 ° along the circumferential direction.
Each of the mounting steps 12 is provided with a base of a support member 13 formed in a strip shape and fastened by screws 13 ′. Each support member 13 extends radially from the lower surface of the water guide dish portion 11 to the side, and a screw rod 14 that can be screwed up and down is provided at the tip of the support member 13.
Are screwed respectively. The plurality of support members 1
3 and a level adjusting means 15 for holding the repaired drain main body 8 at a required height position on the existing waterproof layer 6 by means of a vertically movable screw rod 14 screwed to each support member 13. Have been.

As shown in FIG. 2, a mortar stopper packing 16 is mounted on the water guide cylinder part 9 of the modified drain body 8.
As shown in FIG. 1, the water pipe section 9 is connected to the existing roof drain 2.
The gap s generated when the sheet is inserted into the drain pipe section 4 is shielded. In this embodiment, as shown in FIG. 4, a mortar stopper packing 16 includes an elastic cylinder 17 externally fitted to the water guide cylinder 9, and a plurality of elastic circles stepped up and down on the elastic cylinder 17. And a plate 18. Here, the elastic cylinder 17 and the plurality of elastic discs 18 are integrally formed of rubber or a soft synthetic resin having appropriate elasticity. The elastic cylinder 17 is formed to have a slightly smaller diameter than the water guide cylinder 9, and is forcibly fitted to the water guide cylinder 9 in a state where the elastic cylinder 17 is expanded through its elasticity. As a result, the mortar stopper packing 16 is mounted so as not to fall off.

In such a configuration, as shown in FIG.
When the new waterproof layer 19 is raised, the water pipe section 9 of the modified drain body 8 is attached to the existing roof drain 2 with the mortar stopper packing 16 attached to the water pipe section 9.
The mortar stopper packing 16 is interposed in the gap s generated between the drain pipe section 4 and the water guide tube section 9 by inserting the drain pipe section 4 from above into the drain pipe section 4 from above. Each of the elastic disks 18, which are provided vertically in the elastic cylindrical body 17 of the packing 16, is elastically deformed according to the width of the gap s generated between the water guide cylinder 9 and the drain pipe 4. Then, the gaps s are individually and independently shielded, thereby obtaining a substantially complete watertight shielding state. As a result, it is possible to reliably prevent the mortar 20, which will be described later, filled in the lower part of the water guide tray 11 from flowing out.

On the other hand, as described above, the repair drain body 8
Is inserted into the drain pipe 4 of the existing roof drain 2 from above, so that the lower ends of the screw rods 14 that constitute the level adjusting means 15 disposed on the lower surface of the water guide tray 11 have an existing lower end. The repair drain body 8 is held in contact with the waterproof layer 6. Each screw rod 14 is screwed to the support member 13 and can be screwed up and down. Therefore, by screwing each screw rod 14 to advance and retreat in the vertical direction, the repair drain body 8 The level can be adjusted so as to be at a required height position in accordance with the height of the new waterproof layer 19, and the fine adjustment can be easily performed.

Here, by adjusting the level of the repaired drain body 8, the height position of the water guide cylinder portion 9 with respect to the drain pipe portion 4 of the existing roof drain 2 changes.
The mortar stopper gasket 16 mounted on the base plate is provided with the plurality of elastic discs 18 provided in the vertical direction, so that the height position of the water guide cylinder portion 9 changes as described above.
The gap s can be shielded by the plurality of elastic disks 18 at portions corresponding to the gap s between the drain pipe section 4 and the water guide cylinder section 9.

Then, as described above, the level adjusting means 1
In a state where the modified drain body 8 is held at a required height position through the mortar 5, the lower part of the water guide plate 11 is filled with a mortar 20, as shown in FIG. At this time, as described above, the gap s between the water guide tube portion 9 of the modified drain body 8 and the drain pipe portion 4 of the existing roof drain 2 is blocked by the mortar stopper packing 16 so that the filling is performed. The mortar 20 does not flow down from the gap s. Also,
Since the support member 13 of the level adjusting means 15 is disposed in the mortar 20 which is solidified, the support member 13 can function as an anchor for fixing the modified drain body 8.

After that, around the repair drain body 8,
Raising concrete 21 having a predetermined thickness is cast in accordance with the height of the outer peripheral edge of the water guide dish portion 11.
A new waterproof layer 19 is laid on top. In addition, a new drain hole 22 is opened in the new waterproof layer 19 at the center of the water guide plate 11, and a peripheral portion of the new drain hole 22 is formed by a screw rod 23 and a nut 24. Is held by the waterproof layer retainer 25 fixed to the support. Further, the new drain hole 22 is covered by a strainer 27 fixed to the waterproof layer retainer 25 with a screw 26.

In the above embodiment, the level adjusting means 15
The bases of the plurality of support members 13 constituting the
Is fixed to the lower surface by screws 13 ′, but may be fixed by welding instead of the screws 13 ′.

In the above construction example, the new waterproof layer 19
This is a description of a sheet-like waterproof layer made of a waterproof sheet layer or a waterproof asphalt layer. When a new waterproof layer made of a waterproof mortar layer is to be raised and constructed, waterproofing is performed instead of the concrete 21. By casting the mortar, the waterproof mortar becomes a new waterproof layer.

FIG. 5 shows a second embodiment. In this embodiment, the mortar stopper packing 16 mounted on the water pipe 9 of the modified drain body 8 is made of rubber or a soft synthetic resin having appropriate elasticity. Cylindrical body 28 formed into a thick cylindrical shape with
The thickness of the cylindrical body 28 is formed so as to be greater than the assumed gap s between the water guide cylinder 9 and the drain pipe 4. Further, the inner diameter of the cylindrical body 28 is formed to be slightly smaller than the diameter of the water guide cylinder section 9.
The mortar stopper gasket 16 is attached so as not to fall off by forcibly fitting it to the water guide cylinder 9 in a state where the mortar is expanded through its elasticity.

The rest of the configuration is the same as that of the first embodiment, and the same portions are denoted by the same reference numerals and overlapping description will be omitted.

Even with such a configuration, at the time of construction, the water guide cylinder 9 is attached to the water guide cylinder 9 of the renovated drain body 8 and the water guide cylinder 9 is connected to the drain pipe of the existing roof drain 2 with the mortar stopper packing 16 formed of the cylindrical body 28 attached. The mortar stopper packing 16 can be easily interposed in the gap s generated between the drain pipe section 4 and the water guide pipe section 9 by being inserted into the section 4 from above. Here, since the cylindrical body 28 is interposed in the gap s in a compressed state, the gap s is shielded in a substantially perfect watertight state, whereby the mortar 20 filled in the lower portion of the water guide tray 11 is formed. Outflow can be reliably prevented.

The mortar stopper packing 16 is attached to the elastic cylinder 17 with a plurality of elastic discs 1 as in the first embodiment.
If the elastic drains 8 are formed stepwise along the vertical direction, the deformation stress of each elastic disk 18 is small, so that the existing roof drain 2
When the gap s is small, the resistance generated at the time of insertion into the drain pipe portion 4 is reduced, the insertion operation can be performed easily, and even if the outer diameter of each elastic disk 18 is increased, such a characteristic is maintained. , And has an advantage that versatility that can cope with any of the wide cases is obtained.

In the first embodiment and the second embodiment, the renovation roof drain 1 configured so as to be applicable to the existing roof drain 2 for vertical drainage has been described. The present invention can also be applied to a renovation roof drain configured to be applicable to an existing roof drain for horizontal drainage provided at a corner portion of a roof or a veranda where a wall and a wall are perpendicular to each other.

[0028]

According to the present invention, as described above, the water guide tube portion 9 inserted into the drain pipe portion 4 of the existing roof drain 2 and the water guide tube provided around the inflow side end portion 10 of the water guide tube portion 9 are provided. Plate 11
And a level adjusting means 15 for holding the modified drain body 8 at a required height position on the existing waterproof layer 6 on the lower surface of the water guide plate portion 11. Accordingly, when the new waterproof layer 19 is raised, the level adjustment means 15 can easily perform accurate level adjustment of the repair drain body 8.

Further, in the above configuration, the level adjusting means 15 is provided with a plurality of support members 13 disposed on the lower surface of the water guide plate portion 11, and is vertically screwed to each of the support members 13. By configuring with the possible screw rod 14,
The structure is simple and can be manufactured at low cost.
By a simple operation of screwing up and down in the vertical direction,
The level of the repair drain body 8 can be adjusted, and the fine adjustment can be easily performed.

Further, the present invention relates to an existing roof drain 2
Water pipe section 9 inserted through the drain pipe section 4 of the
And a water guide plate 11 provided around the inflow side end 10 of the drain drain unit 4 for shielding the gap s between the drain pipe 4 of the existing roof drain 2 and the water pipe 9. Since the mortar stopper packing 16 is mounted, when the new waterproof layer 19 is raised, the water guide tube portion 9 of the renovated drain body 8 is simply inserted into the drain pipe portion 4 of the existing roof drain 2 from above. The gap s generated between the drain pipe section 4 of the existing roof drain 2 and the water guide pipe section 9 of the modified drain body 8 can be easily shielded by the mortar stopper packing 16 attached to the water pipe section 9. This eliminates the need for the troublesome work of shielding the gap s using a gum tape or the like at the construction site as in the related art, so that it is not necessary to prevent the mortar from flowing out due to on-site work, thereby improving work efficiency. it can.

In the above structure, the mortar stopper packing 16 is attached to the elastic tubular body 17 fitted externally to the water guide tubular section 9.
And a plurality of elastic disks 18 stepped up and down on the elastic cylindrical body 17 so that the elastic cylindrical body 17
Can be easily mounted simply by externally fitting it to the water pipe 9 of the modified drain body 8, and with the packing 16 mounted, the water pipe 9 is placed above the drain pipe 4 of the existing roof drain 2. Through the elastic cylinder 17
The elastic discs 18, which are set up in the vertical direction, are connected to the water guide cylinder 9.
The gap s generated between the drain pipe portion 4 and the gap s is elastically deformed in accordance with the gap width to shield the gap s independently of each other, so that a substantially complete water-tight shielding state is obtained. There is an excellent effect that the outflow of the mortar 20 filled in the lower part of the water guide tray 11 can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a construction state of a repair roof drain according to a first embodiment.

FIG. 2 is a longitudinal sectional view of an existing roof drain in a construction state and a half longitudinal sectional view of a modified drain body before construction.

FIG. 3 is a plan view of a repair drain main body.

FIG. 4 is a longitudinal sectional view of a mortar stopper packing.

FIG. 5 is a longitudinal sectional view showing a construction state of a repair roof drain according to a second embodiment.

FIG. 6 is a longitudinal sectional view showing a conventional configuration.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roof drain for repair 2 Existing roof drain 3 Receiving part 4 Drain pipe part 5 Open-air floor surface 6 Existing waterproof layer 8 Renovation drain main body 9 Water guide cylinder part 10 Inflow side end 11 Water guide dish part 13 Support member 14 Screw rod 15 Level adjustment Means 16 Mortar stopping packing 17 Elastic cylinder 18 Elastic disc 19 New waterproof layer s Gap

Claims (4)

[Claims] 1. A new waterproofing layer is used for raising a new waterproofing layer on a waterproofing layer on an open-air floor provided with a roof drain having a receiving portion and a drainage pipe connected to the receiving portion. A modified drain main body constituted by a water guide tube portion inserted into the drain pipe portion of the existing roof drain, and a water guide plate portion provided around the inflow side end of the water guide tube portion, A roof drain for repairing a waterproof layer, wherein level adjusting means for holding a repair drain body at a required height position on an existing waterproof layer is provided on a lower surface of the water guide plate. 2. The level adjusting means comprises a plurality of support members disposed on the lower surface of the water guide plate, and a vertically movable screw rod screwed to each of the support members. The roof drain for repairing a waterproof layer according to claim 1, wherein: 3. A method for raising a new waterproofing layer on a waterproofing layer on an open-air floor provided with a roof drain having a receiving portion and a drain pipe connected to the receiving portion. A modified drain main body constituted by a water guide tube portion inserted into the drain pipe portion of the existing roof drain, and a water guide plate portion provided around the inflow side end of the water guide tube portion, A roof drain for repairing a waterproof layer, wherein a mortar stopper packing for blocking a gap between an existing roof drain and a drain pipe portion is attached to the water guide cylinder. 4. The mortar stopper packing is constituted by an elastic cylinder fitted externally to the water guide cylinder, and a plurality of elastic discs provided vertically on the elastic cylinder. The roof drain for repairing a waterproof layer according to claim 3.