JPH0111859Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a protective device for protecting drainage fittings for flat roofs, balconies, etc., that is, roof drains during construction.

[Prior Art] Conventional roof drains of this type are generally made of cast iron and have a structure as schematically shown in FIG. 4. That is, 2 in the figure is the main body of this roof drain, which is buried integrally in the roof 1 made of concrete, for example. This roof drain main body 2 has a dish shape, and a drain pipe 3 is connected to the lower part thereof.
The periphery of the roof drain main body 2 is located substantially on the same plane as the upper surface of the roof 1, and a waterproof layer 4 such as asphalt or a waterproof sheet is applied to the upper surfaces of the roof 1 and the roof drain main body 2. Further, a waterproof layer pressing member 4 is stacked on the upper surface of this roof drain main body 2, and this waterproof layer pressing member 4 is attached to a plurality of stud bolts 6 protruding from the above-mentioned main body 2 and nuts 7 screwed onto these. Thus, the waterproof layer 4 is held between the main body 2 and the waterproof layer 4 is tightened to prevent the waterproof layer 4 from shifting. In addition, this roof drain body 2
A strainer 8 is fitted on top of the strainer 8 and is configured to remove dust and the like.

However, such conventional roof drains are entirely made of cast iron, and their thermal expansion is different from that of concrete, and cast iron is highly brittle, so cracks occur due to differences in thermal expansion, leading to water leakage. There was a problem that caused this.

In order to solve these problems, a roof drain manufactured by press-forming a thin stainless steel plate has been developed. This roof drain made of thin stainless steel plate can tolerate a certain degree of deformation and does not crack like conventional cast iron roof drains. However, with such roof drains, the edge of the roof drain body deforms during concrete pouring during construction, creating a level difference between the edge and the top surface of the poured roof, which obstructs drainage. is likely to occur. In addition, a non-slip member made of punched metal or expanded metal is welded to the top surface of the main body of such a stainless steel roof drain, and this is integrated with a waterproof layer such as asphalt to prevent the waterproof layer from slipping. Some devices are designed to prevent this. However, in such a structure, if concrete or the like adheres to the anti-slip member during construction, the holes become clogged and the adhesion with the waterproof layer is impaired. In addition, concrete sometimes adhered to the stud bolts protruding from the roof drain body, and the studs were sometimes damaged.

These problems can be prevented if care is taken during construction, but conventional roof drains are made of cast iron and can withstand rough handling, so if stainless steel roof drains are handled in the same way as before, the above-mentioned problems will occur. This causes such problems.

[Problems to be solved by the invention] The invention provides installation protection for roof drains that can prevent deformation of the main body, clogging of the waterproof layer holding member, damage to stud bolts, etc. even when subjected to relatively rough handling. It provides ingredients.

[Means for Solving the Problems and Their Effects] The present invention includes a protector main body having a diameter approximately equal to the diameter of the roof drain main body, and a lower edge protruding downward from the periphery of the protector main body. The protector body has a protruding portion that fits into the peripheral edge of the roof drain body, and a hollow cylindrical bolt protection portion for accommodating the stud bolt is formed on the upper surface of the protector body.
Therefore, if this installation protection device is installed on top of the main body of the roof drain when concrete is poured,
The peripheral edge of the mounting protector and the peripheral edge of the roof drain body fit into each other and become integrated, reinforcing the edge of the roof drain body, preventing deformation of the edge, and preventing the upper surface of the roof drain body from being deformed. Since concrete does not flow, the anti-slip member of the waterproof layer is prevented from clogging, and the bolt protection section described above prevents stud bolts from being damaged or concrete from adhering to them. be.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

First, with reference to FIG. 3, the structure of a roof drain made of stainless steel plate to which an embodiment of the mounting protector of the present invention is mounted will be explained.

12 in the figure is a roof drain body, which is buried in the concrete roof 11. The roof drain main body 12 has a dish shape, and a drain hole is formed in the center of the roof drain body 12, and a drain pipe is connected to the drain hole. The periphery of this roof drain body 12 matches the upper surface of the roof 11, and a waterproof layer 14 such as asphalt or a waterproof sheet is applied to these upper surfaces. Further, an annular waterproof layer pressing member 15 is stacked on top of the roof drain main body 12, and is tightened by a plurality of stud bolts 16 protruding from the roof drain main body 12 and nuts 17 screwed thereto. sandwiching the waterproof layer 14 between
This prevents the waterproof layer 14 from shifting. A strainer 18 is further stacked on top of the waterproof layer holding member 15 and is attached by a bolt protruding from the waterproof layer holding member 15 and a cap nut 22 screwed onto the bolt. In addition, an anti-slip member 19 is provided on the upper surface of the roof drain main body 12.
is installed. This anti-slip member 19 is made by punching punched metal, expanded metal, etc. into an annular shape and welding this to the upper surface of the roof drain body 12. Therefore, the waterproof layer 14 made of asphalt or the like flows into the holes of the anti-slip member 19 and is completely integrated with the anti-slip member 19, so that the waterproof layer 14 is reliably prevented from shifting. ing. In addition, this anti-slip member 1
Protrusions 20 are integrally formed on the roof drain main body 12 so as to be arranged in the circumferential direction, located slightly inside the inner peripheral edge of the roof drain main body 9, and serve to reinforce the main body and prevent the above-mentioned waterproof layer from flowing. Note that each of the above members is press-molded from a thin plate of stainless steel.

Next, an embodiment of the mounting protector of the present invention will be described with reference to FIGS. 1 and 2. The attachment protector 40 is made of a synthetic resin material and includes a protector main body 41 having a substantially disk shape. Further, on the peripheral edge of this protective equipment main body 41, there is a protrusion 4 extending downward.
2 is provided protrudingly. The lower edge of this protruding portion 42 is closely fitted to the peripheral edge of the roof drain body 12, and the protective equipment body 40 and the roof drain body 12 are integrated, reinforcing the roof drain body 12, and The installed concrete is configured so as not to flow onto the upper surface of the roof drain body 12. The protrusions 42 are formed to have a sufficiently high height to increase the strength and rigidity of the protector main body 40 and to ensure that concrete flows onto the upper surface of the protector main body 40 during concrete pouring. configured to prevent
Further, a lower surface portion 46 having a shape that substantially matches the upper surface of the roof drain main body 12 is formed on the lower surface of the outer periphery of the protector main body 41. Further, a mounting hole 44 is formed in the center of this protector main body 41. Furthermore, a hollow cylindrical bolt protection part 43 is formed on the upper surface of this protector main body 41 in correspondence with the above-mentioned stud bolt 16, and the structure is such that the above-mentioned stud bolt 16 is housed inside these parts. has been done.

Next, the operation of such mounting protector 40 will be explained. First, a temporary fixing bolt 31 is erected from the roof formwork 30, and the roof drain main body 12 is placed on the formwork 30 with this bolt as the center.
It is supported by a cylindrical spacer 21. Then, a strip-shaped temporary fixing jig 32 having a hole formed in the center of the temporary fixing bolt 31 is inserted and tightened with a wing nut 33 to fix the roof drain main body 12 to the formwork 30. Next, this mounting protector 40 is placed over this roof drain 12 and fixed with a wing nut 45. Therefore, the protrusion 4 of this protective equipment main body 41
2 fits into the peripheral edge of the roof drain main body 12, reinforcing it and sealing the peripheral edge. Further, the stud bolt 16 described above is housed and protected within the bolt protection portion 43.

Then, in this state, concrete for the roof 11 is poured. At this time, the mounting protector 40 prevents deformation of the roof drain body 12, prevents concrete from flowing onto its upper surface, and further protects the stud bolts 16.

Note that the present invention is not limited to the above embodiments. For example, the mounting structure of this protective equipment is not limited to the above example, and if the top surface of the roof drain body is smooth and has no anti-slip member, apply pressure-sensitive adhesive to the bottom surface of the roof drain body. Keep it
It may be configured to be attached to the top surface of the roof drain by adhesively attaching it.

[Effects of the invention] As described above, according to the invention, deformation of the roof drain body during construction can be prevented, concrete can be reliably prevented from flowing onto the upper surface of the roof drain, and damage to stud bolts can also be reliably prevented. The effect is great.

[Brief explanation of the drawing]

Figure 1 is a vertical cross-sectional view of the roof drain body with the mounting protector of one embodiment of the present invention attached;
The figure is a perspective view of an installation protective device according to an embodiment of the present invention.
FIG. 3 is a longitudinal sectional view of a roof drain made of a stainless steel plate, and FIG. 4 is a longitudinal sectional view of a conventional roof drain. 12...Roof drain body, 14...Waterproof layer, 15
...Waterproof layer pressing member, 16...Stud bolt, 19
...Anti-slip member, 40...Protective equipment main body, 42...Protrusion section, 43...Bolt accommodating section.

Claims (1)

[Scope of utility model registration request] A device that protects a roof drain when it is installed, which has a dish-shaped roof drain body and a waterproof layer holding member that is attached to this body with bolts and holds a waterproof layer, and has a diameter that corresponds to the diameter of the roof drain body mentioned above. A disc-shaped protective equipment main body, a protrusion portion that protrudes downward from the peripheral edge of the protective equipment main body and whose lower edge abuts the peripheral edge of the roof drain main body, and an upper surface of the protective equipment main body. A roof drain mounting protector comprising: a hollow cylindrical bolt protector which protrudes from the roof drain body and accommodates a stud bolt which protrudes from the upper surface of the roof drain body.