JPH04189Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an anchor for fixing a roof drain.

<Prior Art> FIG. 3 shows an example of construction of a conventional roof drain a.

Here, when installing and constructing the roof drain a, first temporarily fix the positioning plate b on the formwork c with nails, etc., and then attach a wall around the positioning plate b to a height corresponding to the thickness of the concrete layer around the roof drain a. A cylindrical spacer d is fitted onto the outside, and a roof drain a is mounted on the cylindrical spacer d. An L-shaped rod-shaped anchor e is attached to the lower surface of the roof drain a, which is embedded in the slab concrete x and holds the drain a.

Next, the connecting plate f is mounted on the roof drain a, and the connecting plate f and the positioning plate b are screwed together via the screw g to hold the roof drain a. Then, slab concrete x is poured around the roof drain a and the cylindrical spacer d, and after solidification, the formwork c, the connecting plate f, the positioning plate b, etc. are removed.
In the solidified state of this slab concrete x,
Since the anchor e is embedded in the concrete x, the drain a can be firmly held.

In such a configuration, the cylindrical spacer d is
This is to cut off the slab concrete x and form an insertion part for connecting the drain pipe y to the pipe line b of the drain a. However, due to shrinkage of the concrete slab x, there is a possibility that the cylindrical spacer d may come off after the formwork c is removed.

Therefore, conventionally, a concave annular protruding edge h is formed around the cylindrical spacer d, and the protruding edge h is engaged with the slab concrete x to prevent it from coming off.

<Problems to be Solved by the Invention> However, with this configuration, the cylindrical spacer d requires metal machining, which increases the number of machining steps and has the drawback of poor productivity. In addition, due to the shrinkage of the concrete slab x, the area of engagement with the concrete x becomes small, and the locking force is not necessarily sufficient, so that separation cannot be completely prevented.

The present invention aims to provide a fixing anchor that can hold a cylindrical spacer without requiring the formation of the protruding edge h in addition to the function of holding the drain a.

<Means for solving the problem> The present invention is a fixing device comprising a mounting piece that is screwed onto the lower surface of the roof drain and a pressure contact piece that comes into elastic contact with a cylindrical spacer that is loosely fitted into the conduit of the roof drain. An anchor for use.

<Function> A plurality of the anchors are fixed to the lower surface of the roof drain. Then, the press-welded piece is embedded in the slab concrete x to hold the roof drain. In addition, since the pressing pieces are held in elastic contact with the circumferential surface of the cylindrical spacer, the cylindrical spacer is prevented from falling before the slab concrete x is solidified.

<Embodiment> Figures 1 and 2 show an embodiment of the present invention, in which 1 is a roof drain, and a flange 3 is provided around the upper end of the outer periphery of a shallow-bottomed main body 2. A conduit 4 is provided downward from the center of the bottom. A stepped portion 5 is provided on the main body 2 around the conduit 4 . Further, a screw 4a is formed on the inner surface of the conduit 4.

Further, connecting ridges 6 are formed at appropriate intervals on the lower surface of the collar 3 on the outer periphery of the stepped portion 5, surrounding the pipe line 4.
A vertical screw hole 7 is formed in the connecting ridge 6 and opens downward.

Reference numeral 10 designates a fixing anchor according to the present invention that is attached to the connecting protuberance 6.

As shown in FIGS. 1 and 2, this fixing anchor 10 has a substantially L-shaped cross section, and includes a rectangular attachment piece 11 that comes into contact with the connecting ridge 6, and a crimp piece 14 that hangs downward from one end of the attachment piece 11. It is constructed by coupling the following.

The attachment piece 11 has rotation restriction pieces 12, 12 curved on both side edges thereof, circumscribing both sides of the connection protuberance 6 and preventing rotation of the fixing anchor 10. Further, in the plane part, a connecting hole 1 is provided through which a screw 19 that is screwed into the screw hole 7 from below can be inserted.
3 is provided.

The crimp piece 14 hangs slightly diagonally outward, and has an abutment edge 15 formed at its lower end that curves inward. Furthermore, reinforcing ribs 16, 16 are formed between the fixing anchor 10 and the crimp piece 14 along the bending direction. In addition, this reinforcing rib 16,1
6 is not necessarily required.

The fixing anchor 10 having the above configuration is attached to each connecting protuberance 6 by screwing the screw 19 into the screw hole 7 through the connecting hole 13, and is rotated by the rotation regulating pieces 12, 12 as described above. The crimping piece 14 is held in an unstoppable position, causing the crimp piece 14 to hang inward.

After this, the cylindrical spacer 20 is fitted onto the conduit 4 of the roof drain 1, and its upper end is connected to the stepped portion 5.
comes into contact with. As a result, the contact edge 15 of the crimp piece 14 contacts the outer peripheral surface of the cylindrical spacer 20,
bend inward. And, due to its resilience,
The contact edge 15 is pressed against the cylindrical spacer 20,
hold this.

This cylindrical spacer 20 is prepared in various heights depending on the construction thickness of the slab concrete x.

The roof drain 1 and the cylindrical spacer 20 described above
The connecting body is positioned on the formwork c (see Fig. 3) at a predetermined position by appropriate means, and the roof drain 1
Then, slab concrete x is poured around the cylindrical spacer 20.

After this slab concrete x solidifies, formwork c
is removed. After the formwork c is removed, the cylindrical spacer 20 is held by the crimp piece 14 of the fixing anchor 10, so it will not fall off.

Furthermore, after the solidification, the screw 4a of the pipe line 4 is
A drain pipe y is threadedly connected to the main body 2, and a cap-shaped water passage lid 25 is mounted and fixed on the main body 2.

In the embodiment described above, the fixing anchor 10 is fixed to the lower surface of the collar 3 with the screw 19, but various fixing means such as rivets can be provided.

<Effects of the invention> As described above, the present invention is a fixing anchor 10 that is fixed to the lower surface of the roof drain 1, and since the anchor 10 is equipped with a crimp piece 14, it has a role of holding the roof drain 1. In addition, the cylindrical spacer 20 that is loosely fitted into the conduit 4 can be held and prevented from falling off.

Therefore, unlike the conventional configuration, the cylindrical spacer 20
The concave annular protruding edge h is not required, and the processing of the cylindrical spacer 20 becomes easy. Further, the holding of the cylindrical spacer 20 has excellent effects such as being more rigid than in the conventional structure.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view of a roof drain 1 to which a fixing anchor 10 according to the present invention is attached, and FIG. 2 is a perspective view of the fixing anchor 10. Further, FIG. 3 is a longitudinal sectional side view of the conventional configuration. DESCRIPTION OF SYMBOLS 1...Roof drain, 2...Main body, 4...Pipe line, 10...Fixing anchor, 11...Mounting piece, 13...Connecting hole, 14...Crimp piece, 20...
Cylindrical spacer.

Claims (1)

[Scope of utility model registration request] An anchor for fixing a roof drain, comprising a mounting piece that is screwed onto the lower surface of the roof drain, and a pressure contact piece that comes into elastic contact with a cylindrical spacer that is loosely fitted into a conduit of the roof drain.