JPH0215101Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a conduit vertical standing holder that is used when vertically standing up conduit conduits installed in slabs, etc. in concrete buildings. be.

(Prior Art) Conventionally, electrical conduits have been placed at various locations in concrete buildings under construction, and these electrical conduits may interfere with equipment construction, interior construction, and the like. For example, as shown in Fig. 10, when a conduit P installed horizontally inside a slab F is bent and raised up inside a vertical wall, the upright part P' is raised from the top surface of the slab F. Because of the protrusion, it gets in the way during various construction work and gets bent, or hits materials etc. and gets bent, and accidents often occur where the slab F breaks and breaks on the top surface.

If the rising part P' of the conduit P breaks near the top surface of the slab F, the rising part P' will break off around the rising part P'.
It was necessary to expose the lower part of P′ and connect it using a coupling or the like, which required extra time and made the electrical work complicated. Further, even if the raised portion P' is not broken, if it becomes dipped, it becomes difficult to insert the electric wire therethrough.

As this kind of conduit support,
There was a piping end fixing device described in Japanese Utility Model Publication No. 102880, and a flexible pipe rising support device described in Japanese Utility Model Application No. 58-89675.

The former consists of a fixture that has a flat part for floor mounting, a sleeve for supporting the base of the rising part of the pipe, and a protective tube that can be attached and detached to the upper end of the sleeve, and only the vertical rising part of the pipe is used. It only supports the curved part of the pipe, and cannot support the curved part of the pipe, so if your foot gets caught on the pipe, the curved part will easily move and be damaged.
In addition, vertically rising parts and curved parts of piping tend to deform due to the concrete's own weight when concrete is placed, and lose directionality.Also, the vertically rising ends of piping are not protected by anything, so concrete In order to prevent this concrete from getting mixed in, it is necessary to pull the vertical end of the pipe upward, and after concrete is poured, the vertical end of the pipe protrudes from the slab surface. This has caused problems with work other than electric wire work, such as leveling work on concrete surfaces, and poor workability.

In addition, in the latter case, a supporting piece in the form of a leg is bent and erected on a contacting and fixing piece that is abutting and fixing on a temporary fixing surface.
The support piece has a breakable support tube fixed in the upright direction into which the flexible tube to be supported in an upright manner is inserted, and has the same drawbacks as the former.

In view of these drawbacks, the present invention is capable of reliably fixing the vertically rising part of a conduit having a curved part and the curved part during construction, and in particular, when buried in a slab, the vertically rising part By suppressing changes in the shape of curved parts, it is possible to securely fix the wires and to facilitate wiring work. It is an object of the present invention to provide a holder for a vertically rising part of a conduit conduit, which does not interfere with construction work and can improve workability.

(Structure of the invention) In order to solve the above problems, this invention uses a curved elbow with a stand fixed to reinforcing bars in a temporary concrete frame, deck plate, or slab, and a blind plug that closes the open end of the elbow. It consists of One end of the elbow is connected to a conduit piped inside the slab, and the other end of the elbow is closed by fitting a blind stopper. When the entire blind plug is positioned so that its upper end protrudes from the upper surface of the slab and slab concrete is poured, the elbow is buried within the slab. The blind plug will remain attached to the elbow, and equipment and interior construction will be carried out during this time. Thereafter, the blind plug is removed from the elbow, and a conduit is connected to the open end of the elbow via a connector, etc., to form the standing part of the conduit.

Hereinafter, embodiments of this invention will be described based on the drawings.

In Figures 1 to 5, an elbow 1 consists of an elbow body 2 and a lid 3.
The cylindrical curved portion 4 has fitting portions 5 on the inner periphery of both ends, and the fitting portions 5 are formed into internal threads. The cylindrical curved portion 4 has a U-shaped cross section and is open on one side. A mounting seat 7 is formed on the outer surface opposite to the opening 6, and an oval engagement protrusion 8 is protruded from the mounting seat 7.
The engagement protrusion 8 is provided with a screw hole 9, and the screw hole 9 is either a screw hole with a female thread carved on the inner circumferential surface or a pilot hole for a tapping screw. The inner circumferential surface of the cylindrical curved portion 4 is provided with wave-shaped irregularities 10 on the side with a smaller radius of curvature to reduce resistance during wire passing.
is provided, and engagement recesses 11 having a partially recessed inner circumferential surface are provided on both sides of the unevenness 10. An opening 6 is provided on the circumferential surface of the cylindrical curved portion 4 on the side with a larger radius of curvature.
A protruding ring 12 is formed that protrudes from the periphery.

On the other hand, the lid body 3 that closes the opening 6 of the elbow body 2 has a curved top plate part 13 similar to the cylindrical curved part 4 of the elbow body 2, and is fitted from the opening 6 to form a cylindrical curved part 13. Guide protrusion 14,1 in contact with the inner surface of part 4
5 protrude from the top plate portion 13 so as to face each other at a predetermined interval. Guide protrusion 1 on the side with a smaller radius of curvature
A protrusion 16 is provided on the outer surface of the cylindrical curved portion 4 to fit into an engagement recess 11 formed on the inner surface of the cylindrical curved portion 4 . Furthermore, a protrusion 17 that fits into the protrusion ring 12 is provided protrudingly on the outer periphery of the top plate portion 13 on the side with a larger radius of curvature. In the figure, 18 is a recess into which the tip of the screwdriver is inserted.

The radius of curvature is reduced by fitting the protrusion 17 protruding from the outer periphery of the lid 3 on the side with the larger radius of curvature into the protruding ring 12 of the elbow body 2, and then strongly pressing the lid 3 against the elbow body 2. The side protrusion 16 is fitted into the engagement recess 11 of the elbow body 2, and the elbow body 2 and the lid body 3 are assembled.

The stand 19 is L-shaped, and has a through hole 21 in a fixing part 20 that is fixed to the concrete temporary frame or deck plate, and uses the through hole 21 to attach nails to the concrete temporary frame or deck plate. It is designed to be fixed or screwed. Elbow support part 22 in stand 19
is provided with an elongated mounting hole 23 in the vertical direction,
The engagement protrusion 8 of the elbow body 2 is fitted into the attachment hole 23. Further, a notch 24 is provided in the side edge of the elbow support part 22 at a predetermined position from the fixing part 20, so that the elbow support part 22 can be bent or cut at the notch position. As shown in FIG. 6, a crease line 24' is provided in place of the notch 24 by partially thinning the support part 22, and the crease line 2
It may be bent or cut at 4'.

The blind stopper 25 has a cylindrical closing part 26 with an open top side at the top, and a fitting part 27 at the bottom, and the fitting part 27 is formed into a male thread. The closing portion 26 is tapered so that the outer diameter of the lower portion thereof becomes smaller, and the inside thereof is partitioned by vertical ribs 28 . The fitting portion 27 is adapted to be screwed into the fitting portion 5 of the elbow main body 2. In the figure, 29 is a mounting screw.

To install a conduit using the holding device of this embodiment, as shown in FIG. The height position corresponds to the conduit P piped in the horizontal direction, and the conduit P and elbow 1 are connected to the connector etc.
Connect via 1. By fitting the blind stopper 25 into the fitting portion 5 of the elbow 1, the open end is closed.

If the thickness of the slab is relatively thin and the upper part of the stand 19 protrudes from the planned upper surface of the slab when the elbow 1 is fixed to the stand 19, the upper part of the stand 19 should be cut out as shown in FIG. 2
Use by folding at 4. The blind plug 25 is positioned so that its upper end is partially exposed from the slab F,
Slab concrete A is poured. After the slab concrete A has hardened, predetermined reinforcing work, plastering work, etc. are performed, and then the rib 28 of the blind plug 25 is pinched with pliers and the blind plug 25 is rotated and removed from the elbow 1. Next, a connector or the like is fitted into the fitting part 5, and a conduit is connected to the connector or the like and then set up.

In addition, if the stand 19 cannot be attached to the concrete temporary frame or the deck plate 30, the 9th
The stand 32 shown in the figure is used. This stand 32 is attached to the reinforcing bars 33 arranged in the slab F, and is formed in an L-shape.
is provided, and an elongated attachment hole 37 is provided in the elbow support portion 36. This stand 32 has its fixed part 34 along the reinforcing bar 33, and has a cutout groove 35.
At this point, it is tied up with a binding wire 38.

In the above embodiment, the elbow 1 is composed of the elbow main body 2 and the lid body 3, but it may be provided by bending a pipe material.

Further, the fitting part 5 of the elbow 1 is formed into a female thread,
Although the fitting portion 27 of the blind stopper 25 is formed into a male thread, it is not limited to a thread.

Elbow support parts 22, 36 of stands 19, 32
Although the mounting holes 23 and 37 are provided in the shape of an elongated hole, the mounting hole is not limited to the shape of an elongated hole, and a plurality of mounting holes corresponding to the shape of the engagement protrusion 8 may be provided.

(Effects of the invention) Since the invention has the above configuration, it has the following advantages.

(1) The curved part and rising part of the conduit are securely protected and supported within the elbow, so even when slab concrete is poured, it is not affected by the slab concrete's own weight or other external forces.
There is no change in shape or loss of direction within the slab.

(2) For installation, simply fix the elbow to a temporary concrete frame, deck plate, or reinforcing steel via a stand. After pouring slab concrete to form the slab, the blind plug of the elbow near the surface of the slab can be installed. Since the conduit can be connected to the open end of the conduit, there is no risk of slab concrete getting mixed into the end of the conduit installed inside the slab. There is no need to pull it up, and the end of the conduit does not protrude from the slab surface, so it does not interfere with work other than building electric cable work, such as leveling work on the slab concrete surface. , workability can be improved.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view of this device, Figure 2 is a rear view of the elbow body, Figure 3 is a sectional view taken along the line X-X in Figure 2, Figure 4 is a front view of the lid, and Figure 4 is a front view of the lid. Figure 5 is a sectional view taken along the Y-Y line in Figure 4, Figure 6 is an enlarged perspective view of the main parts of the stand, Figures 7 and 8 are front views of the stand in use, and Figure 9 is another example of the stand. Perspective view of 1st
Figure 0 is a front view of a conventional example. Explanation of symbols of main parts, 1...Elbow, 4...
Cylindrical curved part, 5... Fitting part, 19, 32... Stand, 25... Blind plug, 26... Closing part, 27...
Inset part.

Claims (1)

[Claims for Utility Model Registration] A fitting portion 5 is provided on the inner periphery of at least one end of the cylindrical curved portion 4.
and a fitting part 5 of the elbow 1 at the lower part.
A blind stopper 25 which has a fitting part 27 that fits into the body and has a closing part 26 having a larger diameter than the fitting part 27 at the upper part.
and one end is fixed to the concrete temporary frame or deck plate 30 or reinforcing bar 33 in the slab F,
and a stand 32 whose other end is fixed to the outer surface of the elbow 1, the stand 32 is fixed to a concrete temporary frame, deck plate 30, or reinforcing bar 33, and the blind plug 25 is fitted into the stand 32 and into the fitting part 5. Position and fix the elbow 1 so that the upper end of the blind plug 25 protrudes from the upper surface of the slab F, and connect the conduit P in the slab F to the opening at the other end of the elbow 1 where the blind plug 25 is not inserted. After pouring slab concrete A to form slab F, the blind plug 25 is removed from the elbow 1, and the conduit P is connected to the open end of the elbow 1 to form a rising part of the conduit P. Features a holder for vertically rising parts of conduit pipes.