JPH0120414Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a roof drain that drains water from the roof, balcony, floor, etc. of a building.

[Prior art] Roof drains, which drain water from roofs, balconies, floors, etc. of buildings, generally have a main body to which a drain pipe is connected to receive water, and a main body that is stacked on top of this main body to hold a waterproof layer under pressure. A frame-shaped waterproof layer presser,
It consists of a strainer installed on top of the waterproof layer to remove dust and the like.

By the way, conventional roof drains are made of cast iron and are heavy and difficult to handle during construction. In addition, this cast iron one has a step formed on the outer peripheral edge of the tip of the joint with the drain pipe formed in the drain hole of the main body, and one end of the cylindrical spacer is fitted into this step. The other end of this spacer is kept in close contact with the formwork, and after concrete is poured, the spacer is removed to form a hole for a drain pipe connected to the main body. but,
In this conventional type, the spacer fits into the stepped part formed on the outer periphery of the tip of the joint, so if even a small amount of concrete leaks from this fitted part during concrete pouring, the concrete will be damaged. It immediately adheres to the threaded portion formed on the inner circumferential surface of this joint. For this reason, in the conventional type, it was sometimes necessary to remove concrete adhering to the threaded portion of the joint when connecting the drain pipe.

[Problems to be solved by the invention] The invention was developed based on the above circumstances, and can prevent concrete from adhering to the threaded part on the inner surface of the joint during concrete pouring, and can also improve the connection of drain pipes. This provides a roof drain that is easy to work with.

[Means for solving the problems and their effects] In the present invention, a separate spacer holding member is attached to the outer circumferential surface of the joint of the main body, and a gap is formed between this spacer holding member and the outer circumferential surface of the joint. A spacer fitting part is formed to fit with the end of a large diameter spacer. Therefore, a spacer with a large diameter can be used regardless of the diameter of this joint, and a gap is formed between this spacer and the joint, making it easy to connect the drain pipe. Even if a small amount of concrete enters between the joint and the holding member, this concrete is prevented from adhering to the threaded portion on the inner surface of the joint.

[Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. This embodiment is a horizontal roof drain, and is composed of a main body 1, a waterproof layer holder 2, and a strainer 3, all of which are press-formed from stainless steel plates.

First, the configuration of the main body 1 described above will be explained. This main body 1 is composed of a horizontal portion 13 arranged along a horizontal portion 8a such as a floor of a building, and a vertical portion 12 arranged along a vertical portion 8b such as a wall of the building. The horizontal portion 13 and the vertical portion 12 are orthogonal to each other, and the main body 1 as a whole has a substantially L-shape. A bent edge 14 is formed at the edge of the horizontal portion by bending the edge upward into an L-shape. This bent edge 14 is connected to the horizontal part 13 and the vertical part 12.
The bent edge 14 extends beyond the corner 15 between the corners 1 and 1.
5 is configured to increase the rigidity. Also,
A rectangular receiving recess 17 is formed in the center of this horizontal portion 13, and a portion between this receiving recess 17 and the periphery is formed as a slope portion 16 that slopes toward this receiving recess 17. . Therefore, the structure is such that rainwater and the like flow down this slope portion 16 and are collected in the receiving recessed portion 17. In addition, the water straight section 12
A rectangular receiving recess 20 is also formed in the center of the receiving recess 20, and a sloped surface 16 that slopes toward the receiving recess 20 is formed around the rectangular receiving recess 20, and a planar flange 18 is further formed on the outside thereof. . A drainage hole 21 is formed approximately at the center of the receiving recess 20 of the vertical portion 12, and a joint 23 is welded to the back side of the drainage hole 21.

A plurality of beads 24 and 25 are formed on the peripheries of the receiving recesses 17 and 20 of the horizontal portion 13 and the vertical portion 12, surrounding them. Among these beads, the bead 25 formed on the corner portion 15 side is thicker than the other beads 24, and these beads 25 are continuous across the corner portion 15. Therefore, the bead 25 increases the rigidity of the corner portion 15 and prevents the main body 1 from deforming. Further, since this bead 25 is thicker than the other beads 24, the rigidity of this corner portion 15 is increased. Also, there is a drainage gap 27 between the ends of these beads 24 and 25.
are formed, and rainwater and the like flow into the receiving recesses 17 and 20 through these drainage gaps 27, thereby preventing water from accumulating in these beads 24 and 25.

In addition, at both corners formed between the receiving recesses 17 and 20 of the horizontal portion 13 and the vertical portion 12,
A platform portion 28 is formed by bulging this portion toward the front side. The top surface of this platform portion 28 is formed into a flat surface, and this top surface is configured to form an angle of 45° with respect to the horizontal portion 13 and the vertical portion 12. Further, the side surfaces of these platform parts 28 are connected to the lower edge of the drainage hole 21 and the horizontal part 13.
The bottom surface of the receiving recess 17 is formed into a smoothly continuous slope shape, and a recess, that is, a corner portion formed by the intersection of three surfaces is not formed in this portion. Nuts 29 are welded to the top surfaces of these base portions 28, respectively, and stud bolts 30 are screwed into each of these nuts 29. These base parts 28 are the receiving recesses 1
Since the bottom surfaces of the corners 7 and 20 are connected diagonally, they act like a thread to further increase the rigidity of this corner portion 15. In addition, the side surfaces of these platform portions 28 are formed in a slope shape that smoothly connects the edge of the drainage hole 21 and the bottom surface of the receiving recess 17.
No corners are formed in this portion, which prevents dirt and the like from accumulating.

Further, the joint 23 welded to the back side of the drain hole 21 is configured as follows. That is,
A rearwardly protruding edge is provided on the back side periphery of the drain hole 21, and a thick cylindrical joint 23 made of stainless steel is fitted onto the outer periphery of this edge. A fitting part 34 whose diameter is enlarged by the thickness of the edge is formed on the inner surface of the front end of the joint 23, and this fitting part fits into the outer peripheral surface of the edge, and the inner periphery of the joint 23. It is configured such that the surface and the inner peripheral surface of the drain hole 21 are flush with each other. This joint 23 and the above-mentioned edge are welded on this inner surface. Further, the inner surface of the rear end side of the joint 23 forms a stepped portion 32 and is enlarged in diameter. A thread is formed in this enlarged diameter portion, and a threaded portion 33 for connecting the drain pipe 5 is formed.

Further, a spacer holding member 35 is attached to the outer periphery of the rear end of this joint. This spacer holding member 35 is press-molded from a stainless steel plate, and has a ring shape, and includes a mounting portion 37 that fits on the outer periphery of the joint 23, and a stepped spacer fitting that fits on the end of the spacer 7. A portion 36 is formed, and a flange portion 38 is further formed on the outside thereof. The end of the spacer 7, which is formed to have a diameter considerably larger than the external shape of the joint 23 of the spacer fitting portion and has a large diameter such that a gap A is formed between the outer peripheral surface of the joint 23 and the outer circumferential surface of the joint 23, is fitted. It is configured to This spacer holding member 35 is attached to the joint 2.
The distal end of the attachment portion 37 is welded to the outer peripheral surface of the joint 23. By providing this spacer holding member 35, a large diameter spacer 7 can be used, so that the work of attaching the drain pipe 5 becomes easy. Also,
This spacer holding member 35 is attached at a position away from the rear end of the joint 23, and since a gap A is formed between the inner surface of the spacer 7 and the outer peripheral surface of the joint 23, this spacer holding member 35 is attached at a position apart from the rear end of the joint 23. Even if concrete enters from between the end of the spacer and the spacer holding member, the entered concrete will not adhere to the threaded portion 33 of the joint 23.

In addition, band-shaped temporary fixing legs 40 and temporary fixing hinge legs 41 are spot-welded to the back surface of the main body 1, and by welding the tips of these to the reinforcing bars 4, the main body 1 is temporarily fixed. It is configured so that it can be done. The temporary hinge leg 41 has a hinge structure in which a pair of hinge halves 42 and 43 are pivotally connected by a hinge shaft 44, and one hinge half 42 is spot welded to the main body 1. Then, rotate this other hinge half 43 and attach the tip to the reinforcing bar 4.
It is configured to be welded in contact with the Therefore, when the tip of the temporary hinge leg 41 is aligned with the reinforcing bar 4, no unreasonable load is applied to the spot weld between the temporary hinge leg 41 and the main body 1. Furthermore, a slit 45 is formed at the tip of the temporary fixing leg 40 and the temporary fixing hinge leg 41,
Both edges of this slit 45 are welded to the reinforcing bar 4. Furthermore, in the temporary hinge leg 43, one hinge half 42 is made of stainless steel, and the other hinge half 43 is made of iron material, so that it can be easily welded to both the main body 1 and the reinforcing bar 4. It is configured so that it can be done.

Further, the structure of the waterproof layer presser 2 will be explained below.

The waterproof layer presser 2 is press-molded from a stainless steel plate, and has an L-shaped frame shape as a whole. The waterproof layer presser 2 is composed of a horizontal portion 50 and a vertical portion 51. A bent edge 52 is formed around the entire periphery of the horizontal portion 50 and the vertical portion 51, which is bent toward the back side, that is, toward the outside. Note that these bent edges are not limited to the above configuration, for example,
As shown in FIG. 3, the bent edge 52' may be formed by curling the edge toward the back side in an approximately semicircular shape.
Furthermore, as shown in FIG. 4, a completely circularly curled bent edge 52'' may be formed.
The horizontal portion 50 and the vertical portion 51 are provided with a first slope portion 53 and a second slope portion 54 that slope inward. In addition, a drainage notch 55 is formed in the front edge and side edge of the horizontal portion 50 to reach the second slope portion 54, and water that has entered between the waterproof layer presser 2 and the waterproof layer 9 is formed. Configured to drain water.

Furthermore, mounting portions 57 are formed at the corner portions 56 between the horizontal portion 50 and the vertical portion 51, respectively. These mounting portions 57 are formed to protrude rearward from this curved corner portion 56, and are formed in the shape of a flat plate forming an angle of approximately 45° with respect to the horizontal portion 50 and vertical portion 51, respectively.
Elongated holes 59 are formed in these attachment parts 57, and when this waterproof layer presser 2 is stacked on the main body 1, the stud bolts 30 of the main body 1 protrude through these elongated holes 59, and these The waterproof layer presser 2 is attached to the main body 1 by screwing a nut 60 into the stud bolt 30 and tightening it. Further, bracket portions 58 are formed at both upper and lower ends of these mounting portions 57, and both ends of these mounting portions 57 are connected to the horizontal portion 5 through these bracket portions 58.
0 and vertical portion 51, respectively.
Further, these bracket portions 58 are provided parallel to the horizontal portion 50 and the vertical portion 51, and therefore these bracket portions 58 form an angle of 45° with respect to the flat mounting portion 57 described above. Therefore, this bracket part not only connects and reinforces both ends of these mounting parts 57 to the horizontal part 50 and the vertical part 51, but also connects and strengthens the mounting parts 57.
7, the bracket portion 58 itself acts as a reinforcing edge at the end of the mounting portion 57, increasing its rigidity. These mounting portions 57 are approximately connected to the horizontal portion 50 and the vertical portion 51.
45°, the sides of these mounting portions 57 are connected to the corner portions 56, and the sides of these mounting portions 57 are connected to the corner portions 56;
Both ends of the horizontal part 50 are connected to each other via the bracket part 58.
and the vertical portion 51, these attachment portions 57 act like threads to prevent the waterproof layer presser 2 from bending at the corner portions 56. 2
Increase the rigidity of.

Further, a mounting portion 61 is formed at the center of the upper inner edge of the vertical portion 51, and a mounting screw hole 62 is formed at the center of this mounting portion 61.

Moreover, the above-mentioned strainer 3 is attached on top of this waterproof layer presser 2. This strainer 3
is composed of a triangular side part 71 and a rectangular front part 72, and these side parts 71 and front part 7
A large number of slits are formed in each of the slits 2 to constitute these. Note that drain cutouts 73 are formed at the lower edges of the side surface portion 71 and the front surface portion 72, respectively, to prevent rainwater from accumulating in these lower edges. In addition, the above-mentioned front part 7
A recess 74 recessed toward the back is formed in the upper central part of 2, and the back wall of the recess 74 is formed substantially vertically and is configured as a mounting wall 75. A mounting hole 76 is formed in the center of the mounting wall 75. Then, this strainer 3 is fitted onto the waterproof layer holder 2, and the screw 77 is passed through the mounting hole 76 and screwed into the mounting screw hole 62 of the waterproof layer holder 2 to make this strainer 3 waterproof. Fix to layer presser 2.

In one embodiment of the present invention constructed as described above, the main body is first placed in a predetermined position, and the joint 23 and the formwork 6 are
A cylindrical spacer 7 is arranged between the main body 1 and fixed by a temporary fixing mechanism (not shown).
The tips of the temporary fixing legs 40 and the temporary fixing hinge legs 41 are welded to the reinforcing bars 4 to fix the main body. Next, concrete is poured, and a waterproof layer 9 such as asphalt, waterproof sheet, waterproof mortar, etc. is formed thereon, and this waterproof layer 9 is placed over the peripheral edge of the main body 1.

Next, attach the waterproof layer presser 2 on top of the main body 1, tighten the nut 60 screwed onto the stud bolt 30, and connect the waterproof layer presser 2 and the main body 1.
The waterproof layer 9 is clamped and fixed between. Then, the above-mentioned strainer 3 is attached on top of this.

Even if a small amount of concrete enters between the spacer 7 and the spacer holding member 35 of the joint 23 during the concrete pouring, a gap A is formed between the spacer 7 and the joint 23. Therefore, this concrete is attached to the threaded part 33 on the inner surface of the joint.
It will not stick to the surface. Moreover, since a large diameter spacer 7 can be used regardless of the diameter of the joint 23, the work of connecting the drain pipe becomes easy.

[Effects of the invention] As mentioned above, the invention prevents concrete from adhering to the threaded part on the inner surface of the joint during concrete pouring, and also allows the use of a large diameter spacer, making it easier to weld drain pipes. This has the effect of making it easier.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of one embodiment of the present invention;
The figure is a longitudinal sectional view, Figures 3 and 4 are sectional views showing different embodiments of the shape of the folded edge of the waterproof layer presser, and Figure 5 is the main body with the spacer and spacer holding member disassembled. FIG. 1... Main body, 2... Waterproof layer presser, 3... Strainer, 14... Bent edge, 15... Corner part,
21...Drain hole, 23...Joint, 24, 25...
Bead, 28... Base part, 30... Stud bolt, 35... Spacer holding member, 40... Temporary fixing leg, 41... Temporary fixing hinge leg, 52... Bending edge, 57... Mounting part, 58 ...bracket section,
60...nut, 74...recess, 77...screw.

Claims (1)

[Scope of utility model registration request] A joint part is provided protruding from the main body, and a threaded part for connection with a drain pipe is formed on the inner peripheral surface of the joint part, and an annular spacer holding member is provided on the outer peripheral surface of the joint part, and this The spacer holding member has a spacer fitting part that fits into the end of the large diameter spacer such that a gap is formed between the spacer holding member and the outer peripheral surface of the joint part to hold the spacer in a predetermined position. A roof drain characterized by: