JP2018123597A - Buried member for opening, construction method for opening structure using thereof, and opening structure - Google Patents

Abstract

An opening embedding member that can be suitably used for construction of forming windows or the like on an outer wall of a building, a method for constructing an opening structure using the same, and an opening structure are provided. The present invention provides an opening embedding member 4 for forming a rectangular opening 50 using a formwork panel 3 having a base layer 1, wherein at least each side forming the opening 50 , a surface portion 43 extending perpendicularly from the surface portion 42, and embedded portions 431 and 432 formed on the back side of the surface portion 43 and embedded in the concrete 9. It is characterized by having [Selection drawing] Fig. 1

Description

  TECHNICAL FIELD The present invention relates to an opening embedded member that can be suitably used for construction for forming windows and the like on an outer wall of a building, an opening structure construction method using the same, and an opening structure.

Conventionally, in order to improve the heat insulating property of the outer wall of a building, a concrete structure in which a heat insulating layer in which a heat insulating material is arranged is formed on the inner side of the exterior material is widely known. For example, Patent Document 1 and Patent Document 2 propose a method of using a material as a formwork for placing concrete.
However, in the above-mentioned Patent Document 1, it is described in the specification (paragraph 0015, etc.) that an exterior material (a decorative plate for an outer wall) is attached after placing concrete, so that the outer wall is used as it is after placing concrete. It does not have the advantage that it can be used.
Further, Patent Document 2 describes that a heat insulating material (heat insulating board 11) and an exterior base material (exterior base material 12) are stacked and used as a heat insulating panel for a formwork.

JP 2010-150871 A Japanese Patent No. 4931463

However, when forming an opening for the purpose of forming a window or the like on the outer wall, according to the specification as in Patent Document 1, the insulating material is notched (cut out) after concrete placement and hardening, exterior finishing, opening finishing. However, since the heat insulating material was cut from the outside, it was very time-consuming and also time-consuming to finish.
Further, in the specification as in Patent Document 2, the work is more difficult because the exterior base material is provided integrally with the heat insulating material.
Further, since it requires an operation of driving a frame or the like for attaching a window or the like into the concrete after opening the opening, it is very troublesome.

  Therefore, the present invention proposes an opening embedded member, an opening structure construction method using the opening member, and an opening structure that can be suitably used for construction for forming windows or the like on the outer wall of a building. Objective.

The present invention has been proposed in view of the above, and is an opening embedded member for forming a rectangular opening using a formwork panel having an underlayer, and at least each side forming the opening Characterized in that it comprises a side part extending in a direction away from the side part, a surface part extending orthogonally from the side part, and a buried part formed on the back side of the surface part and buried in concrete. The present invention relates to an opening embedded member (hereinafter simply referred to as an embedded member).
Furthermore, the present invention also proposes an embedded member for an opening, characterized in that the embedded member includes a restricting portion extending from the opening in the thickness direction of the wall.

  The present invention also proposes a method for constructing an opening structure, characterized in that prior to the step of placing concrete, the step of disposing the embedded member on each side forming the opening is performed. Is.

  Furthermore, the present invention is an opening structure using a formwork panel having a base layer, wherein the embedded member is disposed on each side forming a rectangular opening and the embedded member for the opening is provided. An opening formwork is attached.

The embedded member according to the present invention can be disposed so that the extending portion extends along each side of the opening. Further, after the disposition, the embedded member can be easily fitted into the extending portion and the surface portion. Formwork can be arranged.
Furthermore, in the case where a restricting portion extending from the opening in the thickness direction of the wall body is provided, the restricting portion and the extending portion can be disposed in a locking manner on each side forming the opening.

  Further, in the construction method of the opening structure of the present invention using the embedded member, prior to the step of placing concrete, the step of disposing the embedded member on each side forming the opening portion, and then the opening portion This is a process for disposing the formwork, and it is possible to easily place concrete.

  Further, in the opening structure of the present invention using the embedded member, as described above, the embedded member is disposed in a locking manner on each side forming the opening, and the opening formwork is attached to the embedded member. Therefore, concrete can be placed easily.

(A) Perspective view showing the embedded member of the first embodiment of the present invention, (b) Perspective view showing a state in which the filler is disposed on the back surface of the surface portion, (c) Front view and side view of the embedded member, (d) ) A cross-sectional view showing an example of an opening mold held by the embedded member, and (e) a side view showing the embedded member of the second embodiment. (A) A perspective view showing a state in which the embedded member of the first embodiment is arranged in the opening, (b) a perspective view showing a state in which a mold for opening is further arranged, (c) forming a form panel It is sectional drawing which shows the decorative surface to perform, and the decorative material which forms it, (d) It is sectional drawing which shows the edge of the base layer (heat insulation layer) and the heat insulating material which forms it. (A) A plan view showing a state in which the embedded member and the opening formwork of the first embodiment are arranged in the opening, (b) a side sectional view showing the upper side and the lower side of the opening, (c) the opening It is sectional drawing which shows the left side and right side of a part, (d) The top view which shows the state which removed the formwork, after placing concrete, (e) The side sectional view which shows the upper side and lower side of the opening part. It is a perspective view which shows the state which removed the formwork after placing concrete.

  The embedding member of the present invention is a member for forming a rectangular opening using a formwork panel having a base layer, and at least a side portion extending in a direction away from each side forming the opening. And a surface portion extending orthogonally from the side portion, and a buried portion formed on the back side of the surface portion and buried in concrete.

As described above, the embedded member has at least a side portion and a surface portion including the embedded portion, and only one type of embedded member is formed on each side forming the opening as shown in the illustrated embodiment described later. It is possible to use two types of embedded members with the two opposing sides being the same. Although not particularly limited, it is more economical to use one or two types of members. Is desirable.
It is particularly desirable to have a restricting portion (arranged at the opening edge) extending in the thickness direction of the wall as in the illustrated embodiment described later.
In addition, the embedded member may be a piece material arranged at least one or more on each side forming the opening or a continuous material continuous in the length direction. Thus, it is preferable from the viewpoint of installation stability and workability to arrange two or more on each side. In addition, when creating as a piece material, it is only necessary to arrange an embedded member at a predetermined position on each side, and when creating as a continuous material, embedded members cut according to the length of each side. What is necessary is just to use for each edge | side, and since the edge of the base layer which forms a formwork panel is protected by a control part, a failure | damage etc. of a base layer do not arise.

As described above, the extending portion refers to a portion extending in a direction away from each side forming the opening, and is disposed along the back surface of the base layer forming the formwork panel.
As long as the extending portion extends in a direction away from the opening, it may be formed in a substantially flat shape as shown in the illustrated embodiment described later, and the shape is not particularly limited. Absent.

The surface portion refers to a portion that extends orthogonally from the side portion, and includes a buried portion embedded in the concrete to be placed on the back side thereof, the buried portion extending in the thickness direction of the placed concrete. Extend.
The surface portion and the embedded portion may be formed in a substantially hat-shaped cross section as shown in the illustrated embodiment described later, or in addition, a protruding piece or the like that appropriately increases the contact area with the concrete is provided and embedded. It is good also as a part. That is, the buried portion refers to a portion buried in the concrete at the time of placing the concrete, and the configuration is not particularly limited in a shape that does not come off after the concrete is hardened.

Further, the restricting portion in the above-described desirable mode refers to a portion extending from the opening portion in the thickness direction of the wall body (disposed at the opening edge) as described above, and at each side of the opening portion, It arrange | positions along the edge of the base layer which forms a panel.
If this restricting portion extends from the opening in the thickness direction of the wall body (arranged at the opening edge), it is formed in a substantially flat shape and bent at the tip as shown in the illustrated embodiment described later. A piece may be provided, and the bent piece may be attached to the edge of the base layer in a locking manner, and the shape is not particularly limited.
For example, as in a second embodiment to be described later, when a substantially orthogonal surface portion is formed at the tip of the restricting portion to form a groove shape, the heat insulating layer having a thickness that fits into the groove shape can be stably installed. However, as in the first embodiment to be described later, if the restricting portion is intentionally formed small and a bent piece is provided at the tip, the bent piece can be driven into a base layer of any thickness and stably attached. .

The embedded member of the present invention having such a configuration has a side portion along the edge of the base layer forming the formwork panel on each side of the opening portion (if a restriction portion is provided, the restriction portion and the side wall are provided). Since the portion is disposed in a locking manner, the opening mold can be easily disposed along the side portion and the surface portion after the portion is disposed.
These side portions and surface portions (and also the restriction portions) refer to portions that are fixed portions such as window frames attached to the openings, and can also be rephrased as portions that are not embedded in concrete. As shown in FIG. 1 (b), a filler or the like may be interposed on the back side of the surface portion to make it easier to fasten screws or the like.

  Further, in the method for constructing the opening structure of the present invention using the embedded member, the embedded member is disposed on each side forming the opening, prior to the step of placing concrete. Since the embedded member acts as a positioning member when the opening mold is subsequently disposed, the opening mold can be easily disposed, and the subsequent concrete placing process is easily performed. be able to.

  In the opening structure of the present invention using the embedded member, the embedded member is disposed in a locking manner on each side forming the rectangular opening, and the opening mold is attached to the embedded member. Therefore, concrete can be placed easily.

In addition, in a desirable mode having the above-described restricting portion, the extending portion extends orthogonally from the restricting portion, so that the restricting portion and the extending portion form a first L-shaped portion, Since the surface portion extends orthogonally from the side portion, the side portion and the surface portion form a second L-shaped portion.
For this reason, the operation of disposing the embedded member on each side forming the opening described above is an operation of bringing the first L-shaped portion into the locking shape along the opening edge so that the operation can be performed very easily. .
Furthermore, the operation of attaching the opening formwork to the embedded member is an operation of placing the opening formwork along the second L-shaped portion in a locking manner, and therefore can be performed very easily. However, this is a case where the opening mold is provided with an orthogonal corner portion that follows the locking shape in the second L-shaped portion, and from this point of view, the opening mold is preferably configured to have an orthogonal corner portion. .

  Moreover, the said opening part formwork is attached to the said burying member, Comprising: It arrange | positions at the edge part of a formwork panel. The opening formwork is not particularly limited in its material, shape, or the like as long as it has a high strength capable of maintaining the shape of the opening while bearing the pressure of the concrete to be placed (placement pressure). For example, wood having a rectangular cross section (substantially square pillar shape) or the like may be used. However, in the illustrated embodiment described later, a continuous material having a U-shaped cross section made of FRP is used. This form for opening can be removed and used repeatedly after placing concrete. In addition, as the form for opening, it is desirable to have a configuration having orthogonal corners for engaging the second L-shaped part in a locking manner as described above. A mode of forming a U-shaped cross section is preferably selected.

  The formwork panel used in the present invention is provided with a base layer as described above, and includes at least one layer having heat insulation performance, fire prevention performance, etc., and only the base material can be obtained if strength as a formwork can be obtained. May be configured, or a configuration in which a decorative material (exterior material), a reinforcing material, or the like is laminated on the outer surface side of the base material may be used. As a base material constituting such a base layer, any material can be applied as long as it does not rupture due to the concrete pouring pressure, and even a single layer having two or more types of heat insulation having different characteristics. A laminated material may be used, or a reinforcing material or the like may be used separately. For example, various synthetic resin foams that require a predetermined thickness may be used, gypsum board, or an inorganic material such as a PC panel or ALC panel, other fireproofing material or fireproofing material, or one surface of the exterior material. The structure may be integrated in advance (one side) or may be prepared separately. Further, as shown in the illustrated embodiment to be described later, a board having a plurality of performances, a board having different performances or the like combined (laminated), or a laminated board having a plurality of performances may be used.

In addition, as a decorative material (exterior material) to be laminated on the outer surface side of the base material (heat insulating material), a face plate portion serving as a decorative surface and a spacing member can be connected to the back surface side of the face plate portion in the concrete placing process It is desirable to have a fixing portion, and other configurations are not particularly limited.
The material and the molding method are not limited, and face materials of various materials can be applied. A metal face material or a hard resin plate may be used, or an extrusion mold material such as aluminum may be used. The thickness is not limited, but generally the thickness is 1.2 to 1.6 mm or more, and the surface is not distorted or deformed even if some stress such as concrete pouring pressure is applied. It is more desirable to have
In the illustrated embodiment to be described later, a decorative material is used in which a fixing portion is provided on one side and two types of decorative materials not provided on the other are alternately connected, but only one type or three or more types may be used.
In particular, in the case of a decorative material made of an extrusion mold material due to various problems, a width of about 200 mm is generally used (practical), and a plurality of sheets are usually used for a base material (heat insulating material) formed to a width close to 1 m. A decorative material will be added. In this way, a single wall material may be attached to an integral base material. However, due to the above-described problem of the molding width, a method of attaching a plurality of wall materials to an integral base material. Is easy to be taken. And there is also an aspect in which a plurality of two types of wall materials are alternately attached to an integral base material as in the illustrated embodiment.

The fixing portion provided on the back surface side of the face plate portion of the decorative material will be briefly described as long as the end portion of a spacing member (bar-shaped member) called a separator can be connected. For example, the spacing member can be a bolt material. In this case, a plate-like material with various square nuts and a plurality of female screw parts arranged as a fixing material, or a piece to be polymerized with a thick wall and tapped (female screw processing) But you can.
In particular, a space portion that is open to the side or the back surface side may be provided on the back surface side of the face plate portion, and a fixing material (various square nuts) having a screw portion may be attached in the space portion to form the fixing portion. When a general-purpose nut is used, the nut head has a square shape, so that it is possible to prevent co-rotation (spinning) when the bolt material is attached. In addition, it is desirable to interpose a cushioning material for preventing contact between the fixing material and the decorative material in the space portion. The buffer material may be the same material as the base material, or may be an elastic material such as rubber.

In the concrete placing process, the interval holding member (bar-shaped member) connected to the fixing portion of the decorative material is, as described above, when the fixing portion has a female screw portion such as a nut, the interval holding member ( What is necessary is just to use the bolt material etc. which are provided with a male screw part as a rod-shaped member.
In this way, when the fixing portion is provided on the back surface side of the decorative material and the interval holding member disposed in the concrete placement space is connected to the fixing portion, noro leaks from the back surface side of the formwork panel. Even if it does so, since leaking out of a slot can be prevented, a troublesome process and finishing work are not required after concrete placement, and it can use as it is as a cosmetic material (exterior material).
However, since the interval holding member used around the opening in the illustrated embodiment described later is not located in the concrete placement space, the above-mentioned problem of no problem does not occur. That is, the above-mentioned problem of noro occurs in a portion except around the opening.

  And when combining the embedded member of the said structure and the formwork panel of the said structure, an embedding member is the periphery of the opening part provided in the mold formed with the said formwork panel, and the control part of the said embedded member And along the installation part (first L-shaped part). That is, the opening refers to a space for forming a window or the like on the outer wall. Since the space (opening) has a rectangular shape in plan view, the formwork panels are respectively arranged in the vertical direction and the horizontal direction of the opening. In this case, the opening is formed. At this time, the first L-shaped portion of the embedded member is disposed in a locking manner at the opening edge of each side of the opening.

  As described above, the opening structure of the present invention uses a formwork panel having an underlayer as a concrete formwork, and an embedded member having at least a restricting part, a side part, and a surface part is formed by the formwork panel. Since the restricting part and the side part (first L-shaped part) are arranged in a locking manner at the opening edge of each side of the opening part provided in the formwork, the formwork panel is The embedded member can be easily and stably disposed on the edge of the heat insulating layer (heat insulating material) to be formed. Then, the opening mold can be easily and stably attached to the side portion and the surface portion (second L-shaped portion) of the embedded member.

  In addition, when the formwork panel is composed of a decorative material and a heat insulating layer, and the decorative material is connected to the spacing member in the concrete placing process, the concrete placing pressure can be borne by the decorative material, Low thermal insulation can be used.

The embedded member 4 of the present invention is a member for forming a rectangular opening 50 using a formwork panel 3 having a heat insulating layer (underlying layer) 1, and at least from each side where the opening 50 is formed. It is the structure provided with the installation part 42 which is located in the orthogonal form and extends in the direction away from the opening part 50, and the surface part 43 which is extended from the installation part 42 in the orthogonal form and is embedded in concrete.
In the first embodiment shown in FIGS. 1 (a) to 1 (c), a restriction portion 41 extending from the opening 50 in the thickness direction of the wall body (arranged at the opening edge) is provided. It is formed in a substantially square shape, slightly smaller than the thickness of the heat insulating layer 1 constituting the formwork panel 3, and a bent piece 411 is provided at the tip thereof, and the left and right side edges of the surface portion 43 are bent substantially vertically. Thus, the embedded portions 431 and 431 are formed, and the lower ends 432 and 432 thereof are bent outward in a substantially vertical shape, and the cross-section combined with the surface portion 43 is formed in a substantially hat shape.

The embedded member 4 shown in the upper part of FIG. 1 (a) shows a state of being arranged on the lower side of the opening 50 as shown in FIG. 2 (a), and the embedded member 4 shown in the lower part of FIG. As shown in FIG. 2A, a state in which the opening 50 is disposed on the upper side is shown. Further, the embedded member 4 shown on the left side of the figure shows a state of being disposed on the left side of the opening 50 as shown in FIG. 2A, and the embedded member 4 shown on the right side of the figure is The state arrange | positioned in the right side of the opening part 50 as shown to Fig.2 (a) is shown.
Further, as shown in FIG. 1B, the embedded member 4 may be attached in a state where the filler 4B is attached to the back surface side of the surface portion 43.

The embedded member 4 ′ of the second embodiment shown in FIG. 1 (e) is bent substantially orthogonally to the tip of the first face plate portion 41 ′ and faces the second face plate portion 42 ′ in a substantially parallel manner. A four-surface portion 44 is formed, and a bent piece 441 is provided at the tip. Further, the surface portion 43 ′ in the second embodiment is configured to have an embedded portion 433 that protrudes in an H shape toward the back surface side of the face plate.
As described above, since the groove portion is formed between the restricting portion 41 ′ and the fourth surface portion 44, the embedded member 4 ′ of the second embodiment can be stably installed as long as the heat insulating layer has a thickness that fits into the groove portion. The

The embedded member 4 having such a configuration is disposed in the opening 50 as shown in FIG. 2A. Specifically, each side forming the opening 50 (upper side, lower side, left side, right side). In contrast, the embedded members 4 were arranged in two places respectively.
In this state, each piece-like embedded member 4 is not stably attached, so the bent piece 411 at the tip of the restricting portion 41 may be driven into the edge of the heat insulating layer 1 and fastened. You may make it temporarily fix using a double-sided adhesive tape.

Moreover, the formwork panel 3 in which the opening 50 is formed is configured to include a heat insulating layer (heat insulating material) 1, and a decorative surface (exterior surface) 2 is stacked on the outer surface side of the heat insulating material 1. It is.
The formwork panel 3 shown in FIGS. 2 (a) and 2 (b) is composed of a heat insulating material 1 which is vertically long and has a substantially rectangular shape in plan view, and a decorative surface (exterior surface) 2 laminated on the surface thereof. In this configuration, two types of decorative materials 2A and 2B are alternately stacked on a single sheet of heat insulating material 1.
Since the opening 50 is provided, the form panels 3 and 3 adjacent to the left and right have exactly the same vertical dimensions as a general outer wall, but the form is disposed above and below the opening 50. Although the panels 3 and 3 have a short vertical dimension, they are all the same in the figure and are not distinguished.

As shown in FIG. 2 (d), the heat insulating material 1 can be polymerized in a phased manner with one of its left and right edges cut out from the front side and the other from the back side. The edge 11 facing the surface is a superposed part, and the edge 12 superposed with the superposed part 11 is a polymerized part. In addition, the upper and lower end edges are cut into a substantially flat shape.
In addition, in the right side of the opening part 50 of this heat insulating material 1, since the opening part 50 which does not have a heat insulating material exists on the left side as shown in FIG. And the spacing member 7 is arranged stably.

As shown in FIG. 2C, the decorative material 2 includes a first decorative material 2 </ b> A having a space portion 24 on the back surface side of the face plate portion 21 to be a finished surface and a second decorative material 2 </ b> B having no space portion 24. The protrusion 211 which protrudes to the surface side in a substantially T shape is provided at the approximate center of the face plate part 21, and the engagement parts 22, 25 and the engagement receiving parts 23, 26 are provided on the opposing edges. Extrusion mold material. A protrusion having the same shape as the protrusion 211 is provided on the surface side of the engaging portions 22 and 25.
Then, the engaging portion 22 of the first decorative material 2A and the engaging receiving portion 26 of the second decorative material 2B are assembled in an engagement shape, and a molding portion including a substantially U-shaped space portion 24 is formed, The engagement receiving portion 23 of the first decorative material 2A and the engagement portion 25 of the second decorative material 2B are assembled in an engaged state. The space portion 24 accommodates a fixing material 7b such as a nut indicated by a dotted line and a buffer material 7c to form a fixing portion.

Further, after the embedded members 4 are disposed at two locations on each side forming the opening 50 as shown in FIG. 2A, the openings are opened as shown in FIGS. 2B and 3A. A working form 6 is disposed. More specifically, on the upper side and the lower side of the opening 50, as shown in FIG. 3B, the frame 6A, 6A is arranged in the horizontal direction (horizontal direction), and on the left side and the right side of the opening 50, FIG. As shown in (c), the mold 6B was arranged in the vertical direction (vertical direction).
As shown in FIG. 1 (d), the opening mold 6 (6A, 6B) has a substantially U-shaped cross-sectional shape including a plane portion 61 and leg pieces 62, 62 that are perpendicular to both ends of the flat portion 61. This is a high strength material made of FRP having a structure in which a thick ridge 621 is provided at the tip of the leg piece 62.
The opening mold 6 has a length substantially the same as each side forming the opening 50, and the molds arranged on the upper and lower sides of the opening 50 are arranged on the left side and the right side 6A. Although the frame is 6B, since the opening 50 has a vertically long rectangular shape, the mold 6B arranged in the vertical direction on the left side and the right side is formed longer than the mold 6A arranged in the horizontal direction on the upper side and the lower side. ing.

The openings 6A and 6B are connected to each other by connecting the side edges of the leg pieces 62 and 62 of the mold 6B to the mold 6A as shown in FIGS. 2 (b) and 3 (a). It attaches so that it may contact | abut the front-end | tip of the leg piece part 62, and also arrange | positions the coating | covering material 63 on the end surface of the mold 6A, and has closed the groove-shaped part.
The leg pieces 62 of the opening molds 6A and 6B are provided with a plurality of through holes 622. These through holes 622 are apparent from FIGS. 3B and 3C. In the concrete placing process, the spacing member 7 can be inserted, and after the concrete 9 is placed, the molds 6A and 6B themselves can be removed and used repeatedly.

  In the embedded member 4, the restricting portion 41 and the extending portion 42 can be disposed in a locking manner on the heat insulating layer 1 forming the form panel 3 on each side of the opening 50. The opening molds 6 </ b> A and 6 </ b> B can be easily arranged along the surface 42 and the surface portion 43. At this time, as shown in FIG. 2 (b), the opening molds 6A and 6B are previously formed with a plurality of through holes 622, and the positions of the through holes 622 are arranged in the arrangement of the embedded member 4. It arrange | positions so that it may not overlap with a position (= The formation position of the through-hole 622 is shifted from the position where the burying member 4 is arrange | positioned).

In FIGS. 3B and 3C, reference numeral 5Y denotes a formwork, 8A denotes a form tie (registered trademark), and 8B denotes a wide end thick material. As described above, the opening formwork 6A, 6B The leading end of the spacing member 7 that passes through the space reaches the space portion (fixing portion) 24 of the mold panel 3, and the fixing portion 24 tightens the fixing material (nut) 7 b to be firmly integrated. it can.
In the concrete placing step, the mold panel 3 is disposed on one side (opening 50 side), the embedded member 4 and the opening molds 6A and 6B are disposed on the other side. Arranges the mold 5Y so as to face each other.
At that time, on the right side of the opening 50 of the heat insulating material 1 forming the form panel 3, there is no heat insulating material on the left side (the opening 50 exists) as shown in FIG. A rectangular filling material 1B is disposed to stably dispose the spacing member 7.
After that, the plurality of spacing members 7 pass through the through holes 622 of the opening molds 6A and 6B as described above, and one side thereof is a space provided in the decorative material 2A forming the mold panel 3 24, and the other side is placed in a state in which the mold tie 8A and the lateral end thick material 8B are attached to the outer side of the mold 5Y while firmly tightening and fixing. Concrete 9 is placed in the space 90.

  After the cast concrete 9 is cured, the foam tie (registered trademark) 8A and the lateral end thick material 8B are removed on the other side, the mold 5Y is removed, and on the one side, the spacing member 7 is pulled out. The opening molds 6A and 6B are removed. About the formwork panel 3 and the burying member 4, the opening part structure shown in FIG. 4 can be constructed using the opening part structure as it is. It should be noted that the removed spacing member 7 and the opening mold 6 (6A, 6B) can be used repeatedly.

  In the construction of the opening structure, the buried member 4 is a member for easily installing the opening molds 6A and 6B before the concrete 9 is placed, and after the concrete 9 is installed, it is for the opening. Since the mold frames 6A and 6B are removed, the embedded member 4 itself can serve as an attachment site for the external member in the opening structure.

Thus, in the opening structure using the embedded member 4, the embedded member 4 is disposed in a locking manner on each side of the opening 50, and the opening molds 6 </ b> A and 6 </ b> B are easily attached to the embedded member 4. Therefore, the concrete 9 can be easily placed. Moreover, since the formwork panel 3 can be used as an exterior material (exterior panel) as it is after the concrete placing process, it can also be an opening structure for placing concrete or an opening structure of an outer wall. .
As an opening structure of the outer wall, an external member such as a sash S may be attached to the formed opening 50.

1 Insulation (base material)
DESCRIPTION OF SYMBOLS 2 Decorative surface 2A, 2B Decorative material 3 Formwork panel 4 (for opening part) Embedded member 41 Restriction part 411 Bending piece 42 Side part 43 Surface part 431, 432 Embedded part 50 Opening part 5Y Formwork 6 (6A, 6B) Opening Part form 622 Through hole 7 Spacing member 7b Fixing material 7c Buffer material 8A Foam tie (registered trademark)
8B Thick End 9 Concrete 90 Placement Space

Claims (4)

An opening embedded member for forming a rectangular opening using a formwork panel having an underlayer,
An extension part extending at least in a direction away from each side forming the opening, a surface part extending orthogonally from the extension part, and an embedding formed on the back surface side of the surface part and embedded in the concrete An opening embedded member characterized by comprising a portion.   The opening embedded member according to claim 1, further comprising a restricting portion extending from the opening in a thickness direction of the wall body. Prior to the process of placing concrete,
Performing the step of disposing the opening embedded member according to claim 1 or 2 on each side forming the opening, and attaching the opening formwork to the opening embedded member. A construction method of the characteristic opening structure.   3. An opening structure using a formwork panel provided with an underlayer, wherein the opening embedded member according to claim 1 is disposed on each side forming a rectangular opening and the opening An opening structure, comprising: an opening formwork attached to a buried member.

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