JP2001262828A - Female thread pipe-type separator unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a separator unit which can effectively separate a sheathing board for recycling, and facilitates after-working, by improving a separator unit for use in holding a form when a reinforced concrete structure is constructed. SOLUTION: The female thread pipe-type separator unit has a separator 1a having female thread pipe portions 14a at both ends thereof, and a form tie 7a having a male thread portion for penetrating through a through hole in the sheathing board from the outside to be screwed into the female thread pipe portion 14a. When the sheathing board is pinched, a waterproof hat, a P cone, a washer, etc., are interposed between the sheathing board and the female thread portion 14a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a separator unit used for holding a formwork when constructing a reinforced concrete structure.

[0002]

2. Description of the Related Art FIG. 1 is an exploded perspective view showing a conventional separator unit. Reference numeral 1 denotes a separator, which is formed by inserting male threads 2 and 2 cut at both ends of a round bar into a central hole 4 of a tapered wooden cone or plastic cone (hereinafter, referred to as “P cone”) 3, and further a weir plate 5. , And screwed into a female screw hole 9 at the center of the flange 8 of the opposite side of the form tie 7.

FIG. 2 is a cross-sectional view showing a state in which one side of the weir plate 5 is sandwiched between the foam tie 7 and the separator 1 in this manner. Similarly, using the left male thread portion 2, the left weir plate is sandwiched and fixed.

FIG. 3 is a perspective view showing a use state of the foam tie 7.
Hit 0, 10 and hit the side edges 11, 11 from above,
The form tie 7 is made to penetrate the rib seat 12 placed thereon and tightened with the nut 13 to complete the formwork.

[0005]

The weir plate 5 is disassembled with as little damage as possible and reused. In particular, recently, illegal dumping of building waste has become a problem, and the government has also encouraged reuse.

However, in the structure in which the male screw portions 2 at both ends of the separator 1 embedded in the concrete wall penetrate the weir plate 5, the male screw unit 2 remains in the through hole 6 of the weir plate 5, When the weir plate 5 is peeled off from the concrete wall, the vicinity of the male screw portion 2 is easily damaged, which hinders reuse.

Further, after the weir plate 5 is removed, it is necessary to break the male screw portion 2 from the root and remove the P-cone 3, and then fill the mortar to close the holes. Thus, post-processing is also troublesome.

[0008] The technical problem of the present invention is to focus on such a problem and to realize a separator unit which can be effectively peeled off and reused so as not to damage a weird plate, and which can be easily post-processed.

[0009]

The technical problem of the present invention is solved by the following means. Claim 1 is a female threaded pipe type separator unit comprising: a separator having a female threaded pipe portion at both ends; and a foam tie having an external threaded portion that penetrates a through hole of a weir from the outside and is screwed into the female threaded pipe portion. It is.

[0010] As described above, the female threaded tube portion is provided at both ends of the separator, and the male threaded portion of the foam tie penetrates the crest plate from the outside and is screwed into the female threaded tube portion. Since there is a part, after the foam tie has been removed, nothing remains on the baffle, so that the baffle can be easily removed from the concrete wall and the baffle is not damaged.

Since nothing remains on the separator side after peeling off the weir plate, there is no need to break off the male screw portion of the separator protruding from the concrete wall as in the prior art, and no post-treatment is required.

In order to sandwich the crest plate, a waterproof hat, a P-cone, a washer, or the like can be sandwiched between the crest plate and the female thread tube portion.

According to a second aspect of the present invention, there is provided a female threaded pipe type separator unit having a cylindrical waterproof hat with a flange attached to the outer ends of the female threaded pipe sections at both ends of the separator according to the first aspect.

As described above, since the flange portion of the cylindrical waterproof hat is embedded in the concrete wall, the collar portion is prevented from coming off. In addition, the flange can be used to hold the heat insulating material therebetween. further,
It is enough to insert a waterproof plug into this waterproof hat,
No special post-treatment is required.

According to a third aspect of the present invention, a step for a stopper is provided in which the outer end of the female thread tube abuts the inside of a cylindrical P-cone attached to the outer end of the female thread tube at both ends of the separator according to the first aspect. It is a female threaded tube type separator unit in which a portion is formed.

As described above, since the step portion for the stopper against which the outer end of the female thread portion abuts is formed inside the P-cone of the present invention, the P-cone can be used in the same manner as in the prior art. it can. Therefore, it is possible to cope with a site where the same construction method is desired.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment will be described as to how the separator unit according to the present invention is actually embodied. FIG. 4 is an embodiment of a separator unit of the P-cone mounting type according to the present invention, and is a sectional view in a used state.

Reference numeral 1a denotes a female threaded pipe separator according to the present invention, in which female threads 14 are formed at both ends of a metal pipe, and a portion where the female threads 14 are formed at both ends is called a female threaded pipe 14a.

The foam tie 7a used for the female threaded pipe separator 1a is the same as the conventional foam tie 7 in that it has a male thread portion for screwing a nut 13 for tightening the rib seat 12 of FIG. However, it does not have the female screw hole 9 in the conventional foam tie 7 but has a male screw portion 15 instead.

In use, the male screw portion 15 is screwed into the female screw holes 14 at both ends of the female pipe type separator 1a.

Reference numeral 16 denotes a P-cone according to the present invention, whose outer shape is almost the same as that of the conventional tapered P-cone 3.
As shown in the enlarged view of FIG. 1, a female threaded cylinder 17 made of metal is embedded in the large diameter side. The female screw cylinder 17 has a female screw part 18 and a collar 19 at the inner end.

In use, the P-cone 16 is put on the female threaded pipe portions 14a at both ends of the female threaded pipe type separator 1a. That is, when the female threaded pipe portions 14a at both ends of the female threaded pipe type separator 1a are inserted into the holes 20 having no female thread on the small-diameter portion side of the P-cone 16, the distal end of the female threaded pipe portion 14a hits the collar 19 and is supported. .

With the P-cone 16 of the present invention covered in this manner, as shown in FIG. 4, the weir plate 5 is sandwiched, and the male screw portion 15 of the foam tie 7a is inserted into the through hole 6 of the weir plate 5. Then, the P cone 16 is penetrated and screwed into the female thread portion 14 at the tip of the female threaded tube type separator 1a, so that the crest plate 5 can be held therebetween.

After concrete is poured between the dams 5 and 5 on both sides and cured, the foam tie 7a is loosened, separated from the threaded portions 14 on both sides of the threaded pipe separator 1a, and removed. 5, can be easily separated from the concrete wall. In this way, the dams 5, 5 can be removed without any resistance, so that the dams 5, 5 are not damaged.

After removing the dams 5, 5, the P-cone 16
When the male thread of the P-cone remover is screwed into the female thread 18 and pulled, the P-cone 16 can be easily removed. The hole after removing the P cone 16 is completed by filling and closing the mortar.

In FIG. 4, the entirety of the female threaded pipe separator 1a is a tubular body. As shown in FIG. 9, the male threaded portions at both ends of the separator 1 are formed by forming external threads at both ends of a conventional iron bar. 2 can be screwed into the female thread tube 1b for use.

FIGS. 4 and 5 show an example in which a P-cone is used as in the prior art, but FIGS. 6 and thereafter show embodiments using a waterproof hat. FIG. 6 is a sectional view of the used state, and FIG.
The difference is that a waterproof hat 21 is used instead of the P-cone 16.

As shown in an enlarged view in FIG. 7, the waterproof hat 21 has a collar 22 at the inner end of the cylinder made of synthetic resin (that is, the end on the core side of the concrete wall). A step 19a for a stopper is provided in the middle of the cylinder. A tapered hole 23 is formed on the outer end side from the stopper step 19a, and a hole 20 having a constant inner diameter similar to that of the P-cone 16 in FIG. 5 is formed on the inner end side from the stopper step 19a. Has become.

In use, the waterproof hat 21 is put on the female threaded pipe portions 14a at both ends of the female threaded pipe type separator 1a. That is, when the female threaded pipe portions 14a at both ends of the female threaded pipe type separator 1a are inserted into the holes 20 of the waterproof hat 21, the distal end of the female threaded pipe portion 14a hits the stopper step 19a and is supported.

With the waterproof hat 21 of the present invention covered in this manner, as shown in FIG. 6, the dam 5 is sandwiched, and the male screw portion 15 of the foam tie 7a is inserted into the through hole 6 of the dam 5. Then, the waterproof hat 21 is penetrated and screwed into the female thread portion 14 at the tip of the female thread pipe separator 1a.
The weir plate 5 is held therebetween.

After the concrete is poured between the dams 5 and 5 on both sides and cured, the foam tie 7a is loosened, separated from the threaded portions 14 on both sides of the threaded pipe separator 1a, and removed. 5, can be easily separated from the concrete wall. In this manner, the dams 5, 5 can be removed without any resistance, so that the dams 5, 5 are not damaged.

After removing the dams 5, 5, the waterproof hat 2
1 remains in the concrete wall, so the tapered waterproof plug 2
It is only necessary to apply an adhesive to the outer surface of 4 or the inner surface of the tapered hole 23 and fit the waterproof plug 24 into the tapered hole 23. Therefore, as in the case of the P-cone, troublesome post-processing such as removing the P-cone or closing the hole after the removal with the mortar is not required.

Further, since the collar portion 22 of the waterproof hat 21 is embedded in the concrete wall to prevent it from falling off, there is no possibility that the waterproof hat 21 will be detached from the concrete wall.

When the waterproof hat 21 is used, the collar portion 22 at the inner end can be used more effectively. That is, as shown on the left side of FIG. 8, a waterproof hat 21 a having a flange portion 22 a having a larger diameter than the flange portion 22 is used, and the heat insulating material 25 is interposed between the large-diameter flange portion 22 a and the dam plate 5. In addition, the heat insulating material 25 can also be held.

After the concrete is cast, the heat insulating material 25 is integrated with the concrete wall.
Is removed and the baffle 5 is separated, the heat insulating material 25 remains on the concrete wall side.

The female threaded pipe sections 14a at both ends of the female threaded pipe type separator 1a in the above embodiment are formed by directly forming the female threaded sections 14 at both ends of the pipe itself. On the other hand, as shown in FIG. 9, it is also possible to use the male screw portions 2 at both ends of the conventional iron bar separator 1 to add a separate female screw tube portion 1b.

If the separate female thread portion 1b is made longer than the male thread portions 2 at both ends of the conventional separator 1, the female thread portion 14 remains on the outer end side of the female thread portion 1b. The male screw part 15 of the foam tie 7a is screwed into the part 14.

As shown in FIGS. 4 to 8, the type in which the female threads 14 are formed directly at both ends of the pipe itself is suitable for a relatively short separator. That is, it is suitable for constructing walls, beams, columns, and the like.

In the case of the type in which the internal thread portions 14 are formed directly at both ends of the pipe itself, a long internal thread tube having the internal thread 14 formed on the entire length is used and cut into appropriate lengths on site. Can also be used. Therefore, it is only necessary to cut to a length corresponding to the site, and workability is improved.

On the other hand, as shown in FIG. 9, a female threaded pipe 1 is attached to male threads 2 at both ends of a conventional separator 1 made of an iron bar.
The structure in which b is added is suitable for large-sized columns and footing forms. However, even when constructing walls, beams, columns and the like, it is also possible to use such an additional structure.

The female threaded pipe separator 1a and the female threaded pipe part 14a are preferably made of metal, but can also be made of synthetic resin, particularly reinforced plastic.

[0042]

According to the first aspect of the present invention, the female threaded tube portion is provided at both ends of the separator, and the male threaded portion of the foam tie is screwed into the female threaded tube portion through the crevice from the outside. Since there is a male thread on the tie side, after removing the foam tie, there is nothing left on the weir, so we can easily remove the weir from the concrete wall and there is no damage to the weir .

After the weir is removed, nothing remains on the separator side, so that there is no need to break off the male screw portion of the separator protruding from the concrete wall as in the prior art, and no post-treatment is required.

According to the second aspect, since the flange portion of the cylindrical waterproof hat is structured to be embedded in the concrete wall, the collar portion is prevented from coming off. In addition, the flange can be used to hold the heat insulating material therebetween. Further, since it is sufficient to insert a waterproof plug into the waterproof hat, no special post-treatment is required.

According to a third aspect of the present invention, a stepped portion for a stopper against which the outer end of the female thread portion abuts is formed inside the P-cone of the present invention.
Corn can also be used. Therefore, it is possible to cope with a site where the same construction method is desired.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a conventional separator unit.

FIG. 2 is a side view of a used state of the separator unit.

FIG. 3 is a perspective view showing a use state of a foam tie.

FIG. 4 is an embodiment of a P-cone-mounted separator unit according to the present invention, and is a cross-sectional view in use.

FIG. 5 is an enlarged sectional view of a P-cone according to the present invention.

FIG. 6 is a cross-sectional view of a separator according to an embodiment of the present invention, which is used in a waterproof hat.

FIG. 7 is an enlarged sectional view of a waterproof hat according to the present invention.

FIG. 8 is a cross-sectional view of the use state of the waterproof hat having a large-diameter collar.

FIG. 9 is a cross-sectional view of a usage state of a female threaded pipe type separator in which a female threaded pipe part is added to an iron bar separator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Separator 3 P cone 5 Weir board 7 Form tie 8 Flange part 12 Rib seat 14 Female thread part 14a Female thread pipe part 1a Female thread pipe type separator 1b Female thread part 15 Male thread part 16 P cone according to the present invention 17 Metal female thread cylinder 18 Female thread Part 19 Collar part 19a Step part for stopper 20 Hole part 21 Waterproof hat 22 Collar part 22a Large diameter collar part 23 Taper part 24 Waterproof plug 25 Insulation material

Claims (3)

[Claims] 1. A separator having a female threaded tube portion at both ends, and a form tie having an external threaded portion which penetrates a through hole of a weir from the outside and is screwed into the female threaded tube portion. Female thread type separator unit. 2. The female threaded pipe separator unit according to claim 1, further comprising a flanged cylindrical waterproof hat attached to the outer ends of the female threaded pipe parts at both ends of the separator. . 3. A stepped portion for a stopper against which the outer end of the female thread tube abuts is formed inside a cylindrical P-cone mounted on the outer end of the female thread tube portion at both ends of the separator. The female thread tube type separator unit according to claim 1, wherein: