JPH0215102Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is used in concrete buildings when multiple electrical conduits installed horizontally in a slab etc. are curved in parallel and raised vertically. This invention relates to a holder for parallel standing up of electrical conduits.

(Prior Art) Conventionally, a concrete building under construction has electrical conduits installed at various locations, and these conduits can sometimes interfere with equipment construction, interior construction, and the like. For example, as shown in Fig. 13, 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 circumference of the rising part P' must be removed to expose the lower part of the rising part P', and the connection must be made using a coupling, etc. However, it required extra effort 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 and a sleeve for supporting the base of the rising pipe, and a protective tube that can be attached and detached to the upper end of the sleeve, and allows multiple pipes to be connected in parallel. There is no disclosure of how to start up the pipe, and only the vertically rising part of the piping is supported.
Since the curved part of the pipe cannot be supported, if you step on the pipe, the curved part will easily move and be damaged, and the vertically rising part and the curved part of the pipe will easily deform due to the weight of the concrete when concrete is poured. ,
Since the vertical end of the pipe is not protected in any way, there is a risk of concrete getting mixed in. To prevent this concrete from getting mixed in, the vertical end of the pipe should be After concrete is poured, the vertical end of the piping will protrude from the slab surface, which will interfere with construction work other than electrical cable work, such as leveling the concrete surface, and the work will be delayed. The problem was that they did not have good sex.

In addition, in the latter case, a support piece in the form of a leg is bent and erected on the contact fixation piece that is fixed in contact with the temporary fixation 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 allows multiple conduits to be stood up in parallel and fixes the vertically rising part and the curved part of multiple conduits that have curved parts during construction. This can be done reliably, and especially when buried in a slab, by suppressing changes in the shape of vertically rising parts and curved parts, it can be fixed reliably and at the same time facilitate wiring work. It is an object of the present invention to provide a holder for the parallel upright portion of electric conduit conduits that can improve work efficiency without interfering with work other than electric wire work, such as leveling work on the surface of slab concrete after slab concrete is placed. This is the purpose.

(Structure of the invention) In order to solve the above problems, this invention includes a curved elbow with a stand fixed to reinforcing bars in a concrete temporary frame, deck plate or slab, and a blind plug that closes the open end of the elbow. , and a bracket having a plurality of holding holes into which elbows or blind plugs are inserted. 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 plug. The bracket is fixed to the elbow by inserting an elbow or blind plug into one of the plurality of holding holes, and by inserting another elbow without a stand into the other holding hole. Multiple elbows are arranged in parallel. 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 remains attached to the elbow,
During this time, equipment and interior construction will be carried out. 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 6, 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 is formed to have a U-shaped cross section and is open on the 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 cut into the inner circumferential surface or a pilot hole for a tapping screw. The inner periphery of the cylindrical curved part 4 is provided with wave-shaped unevenness 10 on the side with a smaller radius of curvature in order to reduce the resistance during wiring, and the inner peripheral surface is partially recessed on both sides of the unevenness 10. An engagement recess 11 is provided. A protruding ring 12 protruding from the periphery of the opening 6 is formed on the circumferential surface of the cylindrical curved portion 4 on the side having a larger radius of curvature.

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 part 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 that fits into an engagement recess 11 formed on the inner surface of the cylindrical curved portion 4 is provided on the outer surface of the cylindrical curved portion 4 . Further, 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 on the side edge of the elbow support part 22 at a predetermined height 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. 7, a crease line 24' is provided in place of the notch 24 by partially thinning the support part 22, and the crease line 24'
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.

A bracket 29 for installing a plurality of elbows 1 in parallel is a plate-shaped bracket having a plurality of holding holes 30 into which the fitting portions 27 of the blind plugs 25 are inserted.

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 3. Next, the holding hole 30 of the bracket 29 is made to correspond to the fitting part 5 of the elbow 1, and the blind plug 2 is attached.
By screwing the fitting part 27 of No. 5 into the fitting part 5 from the holding hole 30, the fitting part 5 is closed, and the bracket 29 is clamped between the elbow 1 and the blind plug 25.

To install another elbow 1 in parallel with the elbow 1 attached to the stand 19, align the fitting part 5 of the elbow 1 with the holding hole 30 of the bracket 29,
The fitting part 27 of the blind plug 25 is screwed into the fitting part 5, and the bracket 29 is clamped between the elbow 1 and the blind plug 25.

If the thickness of the slab F is relatively thin and the upper part of the stand 19 protrudes from the planned upper surface of the slab with the elbow 1 fixed to the stand 19,
As shown in the figure, the upper part of the stand 19 is cut out 24.
Use it by folding it. The blind plug 25 is positioned so that its upper end is partially exposed from the slab F, and slab concrete A is placed thereon. After the concrete slab A hardens, predetermined equipment work and interior work are carried out, and then the rib 28 of the blind plug 25 is pinched with pliers and the blind plug 25 is rotated to form the elbow 1.
Remove from. 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 31, the first
The stand 34 shown in Figure 0 is used. This stand 34 is attached to the reinforcing bars 35 arranged in the slab F, and is formed in an L-shape.
7 is provided, and a mounting hole 39 is provided in the elbow support portion 38.
is provided. This stand 34 has its fixed portion 36 aligned with the reinforcing bar 35 and is tied down with a bind wire 40 in the notched groove 37.

The elbow 1 in the above embodiment has an elbow main body 2
and a lid body 3; however, it may be constructed 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 to have a male thread, it is not limited to a screw, and may be a fitting.

Furthermore, the elbow support portions 2 of the stands 19, 34
2 and 38 are provided with elongated attachment holes 23 and 39, however, the attachment hole is not limited to the elongated hole shape, and a plurality of attachment holes corresponding to the shape of the engagement protrusion 8 may be provided.

Although the bracket 29 in the above embodiment has a holding hole 30 formed in a plate, it may have the structure shown in FIGS. 11 and 12.

A bracket 41 shown in FIG. 11 is provided with a holding part 43 having a cylindrical holding hole 42 into which the end of the elbow 1 is inserted, and a tip of a rib 44 protruding from the outer periphery of the holding part 43. It has a holding part 46 having a holding hole 45 into which the end of the elbow 1 is inserted. In order to prevent the bracket 41 from falling,
A protrusion 47 is provided on the outer periphery of the elbow 1, and the protrusion 4
An engagement recess 48 into which the holder 7 is fitted is cut out from the lower edge of the holding part 43.

The bracket 49 shown in FIG. 12 is provided with a cylindrical holding part 51 having a holding hole 50 into which the end of the elbow 1 is inserted, and a protruding part 52 is provided on the outer surface of the holding part 51. A fitting groove 53 is provided in the portion 52.
is provided, and a fitting groove 5 is provided on the outer surface opposite to the protrusion 52.
A protrusion 54 having a T-shaped cross section corresponding to No. 3 is provided in a protruding manner. The fitting groove 53 is closed at the lower end to prevent the protrusion 54 fitted into the fitting groove 53 from escaping downward. This bracket 49
are used in parallel. bracket 49
In order to prevent the elbow from falling, a protrusion 55 is provided on the outer periphery of the elbow 1, and an engagement recess 56 into which the protrusion 55 fits is cut out from the lower edge of the holding part 51.

In the embodiment shown in FIGS. 11 and 12, the protrusions 47, 55 and the engaging recesses 48, 56 are not provided, and the ends of the elbow 1 and the holding parts 43, 51 are strongly fitted, or the elbow 1 is The brackets 41, 49 may be prevented from falling by forming the end portions into tapered shapes.

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

(1) Multiple conduits can be stood up in parallel, and the curved part and upright part of the conduit are reliably protected and supported within the elbow, so even if it is poured with slab concrete, it will not work with slab concrete. unaffected by its 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 and bracket. After pouring concrete into the slab, remove the blind plug from the elbow near the slab surface and open the elbow. Since the conduit can be connected to the end of the conduit, there is no risk of slab concrete getting into the end of the conduit piped inside the slab, and the end of the conduit must be pulled upwards to protect the end of the conduit. Since there is no wire conduit and the end of the conduit does not protrude from the surface of the slab, it does not interfere with work other than building electric wire work, such as leveling work on the slab concrete surface, improving work efficiency. can be done.

[Brief explanation of drawings]

Figure 1 is an exploded perspective view of this device, Figure 2 is a rear view of the elbow, 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 5 is a front view of the lid. The figure is a cross-sectional view taken along the line Y-Y in Figure 4, Figure 6 is a perspective view of the stand in use, Figure 7 is an enlarged perspective view of the main parts of the stand, and Figures 8 and 9 are front views of the stand in use. , FIG. 10 is a perspective view of another example of the stand, FIGS. 11 and 12 are perspective views of another example of the bracket, and FIG. 13 is a front view of the conventional example. Explanation of symbols of main parts, 1...Elbow, 4...
Cylindrical curved part, 5... Fitting part, 19, 34... Stand, 25... Blind plug, 26... Closing part, 27...
Inset part, 29, 41, 49...Bracket.

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 31 or reinforcing bar 35 in the slab F,
and a stand 32 whose other end is fixed to the outer surface of the elbow 1, and one or more holding holes 30 which are attached to one end of the elbow 1 having the fitting part 5 and into which the elbow 1 or the blind plug 25 is inserted. Bracket 2 with
9, the stand 32 is fixed to a concrete temporary frame, deck plate 31, or reinforcing bar 35, and the bracket 29 is fitted into the fitting part 5 at the upper end of the stand 32, and the blind plug 25 is fitted to fix the bracket 29. The other holding hole 3 of the bracket 29 is clamped.
0, the elbow 1 to which another elbow 1 and a blind plug 25 can be attached is positioned and fixed so that the upper end of the blind plug 25 protrudes from the upper surface of the slab F, and the opening at the other end opposite to the blind plug 25 of the elbow 1 is opened. After connecting the conduit P in the slab F to the section and placing the slab concrete A, remove the blind plug 25 from the elbow 1, connect the conduit P to the open end of the elbow 1, and start the conduit P. A holder for parallel standing portions of electrical conduits, characterized by comprising: