JP2659680B2 - Wall construction separator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall separator most suitable for use, for example, when building a building wall.

[0002]

2. Description of the Related Art As one of wall construction methods for constructing a wall of a building or the like, a so-called formwork in which rectangular formwork blocks are used and laid vertically and horizontally on a plane. Block construction is generally known.

FIGS. 15 and 16 show an outline of a conventional general construction method of a building wall in this type of formwork block construction. In the figure, reference numeral 1 denotes a basic formwork block (H-shaped block) made of concrete.
A pair of rectangular panel portions 2 and 3 arranged in parallel with each other at a predetermined interval are provided. Is formed.

The height of the rib part 4 is the panel part 2,
3 is set lower than the height h, and is disposed apart from each other on the inner side in the longitudinal direction, whereby the hollow portion through which the vertical streaks 5 pass through the inside and the left and right butted portions is The space through which the horizontal streaks 6 pass is formed in the upper part, respectively.

[0005] The formwork block 1 is laid up and down and left and right while arranging a vertical streak 5 and a horizontal streak 6 therein, and a cast-in-place concrete 7 is poured into the space and the hollow portion. By embedding the horizontal stripes 6 in the concrete 7, the walls of the building are constructed.

As the mold block, in addition to the above-described H-shaped block, a Z-shaped block, an L-shaped block and the like are widely used.

[0007]

However, each of the above-mentioned conventional wall form blocks is an integrally molded product of concrete. Therefore, the size of the block is large for convenience of transportation and handling. Was limited.

For example, in the case of the form block (H-shaped block) shown in FIG. 15, the length 1 is 390 mm.
The height h is 190 mm and the width t is 150, 180, 200
mm was set (normalized).

[0009] In addition, since concrete generally has poor heat insulation performance, in the case of a heat insulating structure in which the entire building is covered with heat insulating material, a heat insulating material is separately prepared and is provided around the wall so as to surround the entire building. Had to be mounted on

In order to solve these drawbacks, it is conceivable that the form block is made of a resin foam. However, when the mold block is made of a resin foam,
Due to the internal pressure of the cast-in-place concrete poured into the interior, not only the upper and lower connecting portions of the form block in particular spread outward, but also the periphery of the form block (resin foam) is covered with a wall plate or the like. In this case, there is a problem that the coating operation is considerably difficult.

SUMMARY OF THE INVENTION In view of the above, the present invention provides a mold block made of a lightweight and highly heat-insulating resin foam when a wall is constructed. It is an object of the present invention to provide a device that prevents the spread of the mold block and also can be used as a fixture when the formwork block is covered with a wall plate or the like.

[0012]

In order to achieve the above object, a wall-building separator according to the present invention comprises a pair of panel portions which are disposed substantially parallel to each other, and are provided on both upper and lower end surfaces thereof.
A wall-building separator disposed straddling between the panel portions of a mold block made of a resin foam provided with convex portions that face each other and engage with each other when connected vertically. Steps located between the protrusions facing each other in the thickness direction when the frame blocks are connected vertically are formed at both ends of the connection plate portion, and at the tip of the step portion, horizontally to the outside of the panel portion. The extending flat portion is characterized in that a vertical plate portion extending in the vertical direction is connected to the tip of the flat portion.

Here, a notch groove for arranging reinforcing bars is provided inside the connecting plate portion, or a bent piece bent substantially vertically is connected to an end of the connecting plate portion, and the inside of the bent piece is connected to the bent piece. A second notch groove extending in a direction perpendicular to the notch groove may be provided.

[0014]

According to the present invention constructed as described above, when the form blocks made of resin foam are piled up and down, they are attached to the upper and lower connecting portions of the form blocks, so that the inside of the form blocks is The internal pressure of the cast-in-place concrete is received by the steps formed at both ends of the connecting plate portion, so that the form block can be prevented from spreading outward. In addition, since the plane formed by the outer surface of the vertical plate portion exposed to the outside of the formwork block is always constant, it can be used as a guide when applying a wall material or used as an attachment for a wall plate or the like. can do.

[0015] Further, by providing a notch groove for inserting a reinforcing bar and inserting the reinforcing bar into this notch groove, the interval between the reinforcing bars can be easily made constant without requiring skill, and thereby, It is possible to construct a wall without unevenness in strength.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 8 show an embodiment in which a wall of a building is constructed using the separator for building a wall according to the present invention. In FIG. 1 to FIG. The separator 10 is formed by bending a slightly long rectangular flat plate.

The separator 10 has a connecting plate portion 11 extending in the horizontal direction, step portions 12 formed on both ends of the connecting plate 11 so as to rise upward, and a horizontal bend from the tip of each step portion 12. The connecting plate 11 is formed with a flat portion 13 that extends upward and a vertical plate portion 14 that rises upward from the tip of each flat portion 13. A cutout groove 15 that extends inward is formed in the connecting plate portion 11.

The separator 10 is mounted on the upper end of a mold block 20 made of a resin foam as shown in FIG. 1, and in this state, as shown in FIG.
When a wall is constructed by placing a cast-in-place concrete 28 in the interior as described below and preventing the outward spread, when applying a wall material such as mortar concrete, It is intended to be used as a fixture for wall boards.

The form block 20 is formed by foaming a synthetic resin, such as foamed polystyrene, foamed polyurethane, foamed polyvinyl chloride, or foamed polyolefin.
It is about 100 times, preferably about 20 to 80 times, and more preferably about 30 to 70 times.

By forming the form block 20 from a resin foam as described above, the weight can be reduced,
The mold block 20 itself can have high heat insulation performance and a sound absorbing effect, and can prevent corrosion and reduce costs.

As shown in detail in FIG. 3, the formwork block 20 has a pair of rectangular panel portions 21 which are substantially parallel to each other and arranged so that the interval is slightly widened upward. , 22 are provided.
Numeral 2 is integrally connected at its opposing surface via a plurality of rib portions 23.

The rib portions 23 are arranged at a predetermined pitch p ₁ , a hollow portion 24 communicating vertically is formed between adjacent rib portions 23, and both outermost ribs are formed. part 23, wherein the end face of the panel portions 21 and 22 are arranged only on the inner pitch p ₁ of the half of the distance a (= p _1/2), thereby against the two mold blocks 20 in the lateral direction When arranged, as shown in FIG. 4, the hollow portions 24 are also provided between the form blocks 20 adjacent to each other.
Is formed.

Further, the height H _{2 of the} rib portion 23 is lower than the height H ₁ of the panel portions 21 and 22 (H ₂ <
H ₁ ) and the panel sections 21 and 22
Are arranged at the center in the height direction, so that a space 25 communicating laterally above and below the rib portion 23 of the form block 20 is formed.

The hollow portion 24 is provided with an EP for signal distribution.
S (Electrical piping and wiring space), DS for air conditioning duct
(Duct space) and PS (piping space) for water supply / drainage pipes, and as shown in FIG. 6 and FIG. .

The space 25 allows the hollow portions 24 to communicate with each other, and allows the horizontal streaks 27 extending in the horizontal direction to pass therethrough. A plurality of grooves 23a may be provided on the upper and lower end surfaces at a predetermined pitch, and the horizontal streaks 27 may be inserted through the grooves 23a.

That is, when building walls are built up by sequentially stacking the form blocks 20 in the vertical and horizontal directions, the vertical stripes 26 for reinforcing the walls are provided in the hollow portions 24 communicating with the vertical direction. , The horizontal streak 27 is located in the concave groove 23a communicating with the left and right direction, and the hollow portion 24 and the space 2
The cast-in-place concrete 28 is cast in the concrete 5, and the vertical bars 26 and the horizontal bars 27 are embedded in the concrete 28.

As described above, since the form block 20 is made of a resin foam, the weight can be reduced. For example, the form block 20 has a length L of about 900 mm. , its height H ₁ of about 28
0 mm, the width T ₁ is about 190mm at its upper end, the width T ₂ of the lower end are respectively set to about 200 mm.

When the form blocks 20 are vertically stacked, as shown in FIG.
On the upper surface of each of the mold blocks 20, two thirds of one of the mold blocks 20 located above is one of the other mold blocks 20.
In this case, a total of three rib portions 23 are provided so that the hollow portion 24 communicates linearly in the vertical direction.

Further, the outer surfaces of the panel portions 21 and 22 are formed as wall material application surfaces 30 and 31. Since both wall material application surfaces 30 and 31 have the same configuration, here, the wall material application surface 30 of one panel portion 21 constituting the outer wall will be described.

That is, the wall material application surface 30 of the one panel portion 21 located on the outdoor side when the wall is constructed is formed by applying an exterior material (wall material) such as cement mortar 32 to the outer wall. A large number of base grooves 33 are formed in parallel over substantially the entire area.

The base groove 33 surrounds the periphery of a tapered surface 34 which gradually inclines downward in thickness in a substantially U-shaped plane opening upward with a peripheral wall surface 35 rising in the thickness direction. It is configured.

The peripheral wall surface 35 is composed of a side surface portion 35a gradually expanding upward on both sides and a bottom surface portion 35b continuously connecting the lower end of the side surface portion 35a to the side surface portion 35a. The valley 33 has an isosceles trapezoidal shape that expands upward, and gradually becomes deeper downward.
The bottom surface portion 35 b of 5 is raised in the thickness direction at the narrowest and deepest position of the base groove 33.

Then, after the form blocks 20 are laid out, the wall material application surface 30 is, for example, cement mortar 3
An outer wall is constructed by applying a wall material such as 2 or the like. At this time, a part of the cement mortar 32 is
3, so that the cement mortar 32 can be applied without separately attaching a foundation for plastering.

The cement mortar 3 formed by the base groove 33
In order to ensure the holding of 2, the peripheral wall surface 35 of the base groove 33 and the plane formed by the wall material application surface 30 cross each other at an acute angle.

That is, as shown in FIGS. 6 and 7, the angle α formed between the bottom surface 35b of the peripheral wall surface 35 and the wall material application surface 30, and the angle α between the side surface portion 35a of the peripheral wall surface 35 and the wall material application surface 30. The angle β is set to about 70 ° (α = β = 70 °), whereby a pocket-shaped groove is formed around the base groove 33.

Accordingly, the cement mortar 32 applied to the wall material application surface 30 of the form block 20 easily flows from above into the pocket-like groove formed around the base groove 33, and furthermore, Escape from here is prevented by the peripheral wall surface 35.

The angles α and β are preferably about 30 ° to 90 °, and particularly preferably about 45 ° to 85 °. Also, an appropriate inner wall treatment is applied to the wall material application surface 31 on the outer surface of the other panel portion 22 located on the indoor side. However, similarly to the above, an interior material such as a cement mortar 36 or a plaster is used. When using materials (coating materials), these coating materials (cement mortar 36)
Is simply applied to the wall material application surface 31 so that the inner wall can be formed while securely holding this.

The mold block 20 can be formed by, for example, in-mold molding, post-processing using a trowel having an outer shape in conformity with the shape of the base groove 33, and further, cutting.

In this embodiment, an example is shown in which the peripheral wall surface 35 and the wall material application surface 30 intersect each other at an acute angle as the base groove 33, as shown in FIG. The bottom surface 35b of the peripheral wall surface 35 has a horizontal surface, and an upward projection 35c is provided at the front end thereof, or the bottom surface portion 35 has a horizontal surface as shown in FIG.
A recess 35d may be provided in the middle of b, and the projection 35c and the recess 35d may prevent the wall material such as the cement mortar 32 from flowing downward.

The shape of the underlying groove 33 is shown in FIG.
As shown in FIG. 3B, the side surface portion 35a has a rectangular shape rising substantially vertically, or as shown in FIG.
a into a triangular shape where the lower ends intersect at the lower end, as shown in FIG. 3C, the bottom surface 35b is formed into an arc shape, and as shown in FIG. It can be formed in an arbitrary shape such as extending linearly over the entire length, and further, though not shown, forming the whole into a semicircle.

Further, in this embodiment, the underlying groove 33
Are arranged in parallel, that is, at equal intervals in the vertical and horizontal directions, but may of course be arranged in a staggered manner or randomly.

The upper and lower end surfaces of the panel portions 21 and 22 are provided with the following structure in order to stack the form blocks 20 while positioning the form blocks 20 with each other by the form blocks 10 themselves. .

[0043] That is, each upper end surface of the panel portions 21 and 22, the first convex portion 40 at a predetermined pitch p ₂ along its longitudinal direction and a second convex portion 41 is in its thickness direction The first convex portions 4 of the panel portions 21 and 22 are staggered over two rows.
Zeros and the second convex portions 41 are formed at positions facing each other.

[0044] all equal the length b of each projection 40 and 41, together are both set to a half of the pitch _{p 2 (b = p 2/} 2), a first protrusion located outside 40 Write a width W ₁ is the second narrower than the width W ₂ of the convex portion 41 of the (W ₁ <W ₂₎ set positioned inside the. Furthermore, this convex part 4
Rising surfaces 40a, 41 of opposing sides of 0, 41
a, and the rising surfaces 40b, 41b on both sides in the length direction are tapered surfaces that gradually expand outward along the height direction, that is, the length b of the projections 40, 41 increases upward. The widths W ₁ and W ₂ are gradually increased upward.

On the other hand, on the lower end surfaces of the panel portions 21 and 22, the first convex portions 42 having the same predetermined pitch p ₂ and the same length b as the upper end surface are provided along the length direction. And the second
Are alternately formed in two rows in the thickness direction.

The first convex portion 42 located on the outer side is formed in the same shape as the second convex portion 41, and the second convex portion 43 located on the inner side is formed in the same shape as the first convex portion 40. The rising portions 42a, 43a on the sides of the projections 42, 43 facing each other and the rising surfaces 42b, 42b on both sides in the longitudinal direction.
43b is a tapered surface that gradually expands outward along the height direction, that is, the lengths of the projections 42 and 43 gradually increase downward, and their widths gradually decrease downward. It is becoming thicker.

The outer first protrusions 40 and 42 and the inner second protrusions 41 and 43 on the upper and lower end surfaces of each of the panel portions 21 and 22 have the same length. b (= p _2/2) only partial is arranged in a state of out of phase.

As a result, as shown in FIGS. 4 and 5,
When the form blocks 20 are stacked in the up-down direction, the first protrusions 40 outside the form blocks 20 located below are the first protrusions 42 outside the form blocks 20 located above.
And the rising surface 40a of the projection 40 of the form block 20 located below faces the rising surface 43a of the second projection 43 of the form block 20 located above.

On the other hand, as shown in FIGS. 5 and 8, the second convex portion 41 inside the form block 20 located below
Second convex portion 4 inside mold block 20 located above
3 and the projections 4 located below this
Forming block 20 in which one rising surface 41a is located above
The first convex portion 42 is configured to face the rising surface 42a of the first convex portion 42.

At this time, as shown in FIG. 5, the form block 20 has a width T _{2 at} its lower end larger than a width T _{1 at its} upper end (T ₂ > T ₁ ), and is overlapped vertically. First convex portion 4 of formwork block 20 located below
0 rising surface 40a and formwork block 20 located above
And the rising surface 43a of the second convex portion 43 corresponds to the rising surface 41a of the second convex portion 41 of the form block 20 located below.
And the rising surface 42a of the second convex portion 42 of the form block 20 located above is configured to engage with each other.

Thus, each of the projections 40, 41, 42, 4
3 is the three rising surfaces 40a, 40b, 40b, 4
1a, 41b, 41b, 42a, 42b, 42b, 43
a, 43b, 43b engage with each other to perform mutual positioning, and furthermore, these rising surfaces 40a, 40b,
By forming the tapered surfaces 41a, 41b, 42a, 42b, 43a and 43b gradually expanding outward,
The connection between the two can be performed by ensuring this engagement.

Then, as described above, the lower 1
One-third of one mold block 20 located on the upper end surface of each of the mold blocks 20 is one-third of another mold block 20.
/ 3, so that each of the convex portions 40, 4
1,42,43 are provided a total of six equivalent of multiples of 3 at a predetermined pitch p _2.

When the mold blocks 20 are stacked up and down in this manner, 1/3 or 2/3 of the formwork blocks 20 project to the side.
A score line 4 is provided at a position where the lengths 1 and 22 are equally divided into three in the length direction.
4 are provided, and cut along the cut lines 44 so that the ends are aligned.

Further, as shown in detail in FIG. 1, a concave portion 35 having a depth corresponding to the thickness of the separator 10 for inserting the separator 10 is formed on each of the upper end surfaces of the panel portions 21 and 22. It is formed along the thickness direction.

The separator 10 includes panel sections 21 and
When the cast-in-place concrete 28 is cast into the inside of the space between the two, the gap is kept constant, and is used as a measure of the applied thickness of the wall material such as the cement mortars 32 and 36. The connecting plate portion 11 of the separator 10
The length of the raised surface 40 of one of the protrusions 40 and 43 that engages with each other in the thickness direction when connected vertically.
The length is set such that the step portion 12 is located between a and 43a.

When the form blocks 20 are piled up and down, the outer peripheral surface of the step 12 of the separator 10 comes into contact with the rising surface 40a of the convex portion 40 of the form block 20 located below. This holding is performed, and when the cast-in-place concrete 28 is poured into the inside, the separator 1
Forming block 2 in which the inner peripheral surface of step portion 12 of “0” is located above
The projection 43 is in contact with the rising surface 43a of the projection 43.

As described above, as described above, when the form blocks 20 are vertically overlapped, a step d (see FIG. 5) occurs at the joint in the up and down direction. When the concrete 28 is cast, the form block 20 is deformed so as to expand outward due to this force. Then, as shown in FIG. 6, in the form block 20 located above, the rising surface 43 a of the second convex portion 43 provided on the lower end surface thereof abuts the step portion 12 of the separator 10, while The rising surface 41a of the second projection 41 of the mold block 20 located at the position and the rising surface 42a of the first projection 42 of the mold block 20 located above press against each other, and by their interaction, The formwork blocks 20 are flush with each other.

Further, when the cast-in-place concrete 28 is poured into the form block 20, due to the internal pressure of the concrete 28, a projecting portion is formed on a part of the form block 20.
Although the flatness here may not be ensured, since the length of the separator 10 is not deformed by this internal pressure,
The plane formed by the vertical plate portions 14 of the separator 10 is always constant, and the cement mortars 32 and 36 can be cast flat using the plane formed by the vertical plate portions 14 as a guide.

In the above embodiment, an example is shown in which the step portion 12 of the separator 10 is located between the one convex portions 40 and 43 which face each other in the thickness direction when they are connected in the vertical direction. However, it is a matter of course that the step portion 12 can be located between the other convex portions 41 and 42.

The distance between the step portion 12 and the vertical plate portion 14 is larger than the thickness of the panel portions 21 and 22 and the cement mortars 32 and 36 are provided on the wall material application surfaces 30 and 31.
When the wall material such as is applied, the surface of the vertical plate portion 14 is set to be exposed to the outside.

Further, the notch groove 15 of the separator 10
Are formed at positions where the vertical stripes 26 are inserted in the vertical direction. By inserting the vertical stripes 26 into the cutout grooves 15, the intervals between the vertical stripes 26 can be easily made constant without skill. It is possible to construct a wall without unevenness in strength.

The vertical plate portion 1 of the separator 10
As described above, the surface 4 is configured so that the surface thereof is exposed to the outside when the wall material such as the cement mortar 32 or 36 is applied, and the exterior plate 50 and the interior plate 51 are formed through the vertical plate portion 14. Can be mounted. That is, for example, a female screw is engraved on the vertical plate portion 14, and the exterior plate 50 or the interior plate 5 is screwed through a screw or the like screwed into the female screw.
1 can be mounted.

The vertical stripes 26 are provided on the separator 10.
Is provided, but when it is located above (or below) the rib portion 23 of the form block 20, there is no need to insert the vertical stripes 26, so FIG. As shown, a separator 10a having no notched groove 15 therein may be used.

Further, as shown in FIG.
A bent piece 16 which is bent perpendicularly to the end face of the bent piece 16 is integrally connected, and a second cutout groove 17 extending in a direction orthogonal to the cutout groove 15 is provided at an upper portion of the bent piece 16 to constitute a separator 10b. By inserting the horizontal streak 27 through the second cutout groove 17, the vertical streak 26 and the horizontal streak 27 can be bound via the separator 10b.

As described above, the vertical streak 26 is formed in the notch groove 15.
By inserting the horizontal streaks 27 into the second notch grooves 17 respectively, the spacing of the bar arrangement can be easily made constant without requiring skill, and a wall without unevenness in strength can be constructed.

According to this embodiment, the form blocks 20 are stacked vertically and horizontally while arranging the vertical streaks 26 and the horizontal streaks 27 therein, and concrete 28 is poured into the hollow portion 24 and the space 25. Thereafter, if necessary, a wall material such as cement mortar 32 or 36 is applied to the wall material application surface 30 on the outdoor side and the wall material application surface 31 on the indoor side.
A wall of a building can be constructed by attaching the exterior plate 50 and the interior plate 51 to the vertical plate portion 14 as a fixture.

Thus, the mold block 2 made of a resin foam is formed in substantially the same manner as a normal mold block.
0 can be constructed quickly and easily using a fairly large formwork block, because it is lightweight and has thermal insulation per se. Further, if necessary, the exposed surface of the wall is easily covered with a wall material such as cement mortar 32, 36 or the like, and then an exterior plate or an interior plate is easily attached to form the block 20 made of resin foam. To protect it.

FIGS. 13 and 14 show an example of the construction of a wall when it is not necessary to arrange a reinforcing bar inside. In this example, a connecting plate portion having a predetermined length is used as a wall construction separator 10c. A flat portion 13 is formed at both ends of a step 11 with a stepped portion 12 therebetween, and a vertical plate portion 14a extending downward is integrally connected to the flat portion 13.

[0069]

Since the present invention has the above configuration,
By using a lightweight and highly heat-insulating resin foam, a form block is used to reduce weight and improve heat insulation performance. In addition, the internal pressure of cast-in-place concrete cast inside this form block Thus, it is possible to effectively prevent the form block from spreading outward, and to construct a wall by using the vertical plate portion of the separator as a measure of the applied thickness of the wall material and a fixture for the wall material.

[Brief description of the drawings]

FIG. 1 is an enlarged perspective view showing an upper portion of a form block when a wall is constructed using a wall construction separator according to the present invention.

FIG. 2 is a perspective view showing a wall construction separator in FIG. 1;

FIG. 3 is a perspective view showing a formwork block;

FIG. 4 is a perspective view showing a state in which the form blocks shown in FIG. 3 are laid up, down, left, and right.

FIG. 5 is an enlarged sectional view of a joining portion in a vertical direction when form blocks are stacked up and down.

FIG. 6 is a longitudinal sectional view showing a state where a wall is constructed (A-
A sectional view along line A).

7 is a sectional view taken along the line BB in FIG. 6;

FIG. 8 is a sectional view taken along the line CC of FIG. 6;

FIG. 9 is a cross-sectional view showing a modification of the cross-sectional shape of the underlying groove.

FIG. 10 is a plan view showing a modification of the planar shape.

FIG. 11 is a perspective view showing a modification of the separator.

FIG. 12 is a perspective view showing another modified example of the separator.

FIG. 13 is a perspective view showing still another example of the separator.

FIG. 14 is a diagram corresponding to FIG. 6, showing a state where a wall is constructed using the separator shown in FIG. 13;

FIG. 15 is a perspective view showing a conventional mold block.

FIG. 16 is a perspective view showing a state where a wall is constructed using the form block shown in FIG. 15;

[Explanation of symbols]

10, 10a, 10b, 10c Separator 11 Connecting plate portion 12 Step portion 13 Flat portion 14 Vertical plate portion 15 Notch groove 16 Bending piece 17 Second notch groove 20 Form block 21, 22, Panel portion 23 Rib portion 30, 31 Wall Material application surface 32, 36 Cement mortar (wall material) 33 Base groove 35 Peripheral wall surface of base groove 40, 41, 42, 43 Convex portions 40a, 40b, 41a, 41b, 42a, 42b, 4
3a, 43b Rising surface

Claims (3)

(57) [Claims] 1. A resin foam comprising a pair of panel portions disposed substantially parallel to each other and having upper and lower end surfaces provided with convex portions which are engaged with each other in the thickness direction when they are connected vertically. A wall construction separator that is disposed straddling between the panel portions of the formwork block, and connects a step portion located between the convex portions facing each other in the thickness direction when the formwork blocks are connected vertically. A flat portion formed at both ends of the plate portion and extending horizontally to the outside of the panel portion at the tip of the step portion, and a vertical plate portion extending vertically at the tip of the flat portion is connected. And wall construction separator. 2. The separator for wall construction according to claim 1, wherein a notch groove for arranging reinforcing bars is provided inside the connecting plate portion. 3. An end portion of the connecting plate portion is connected to a bent piece bent substantially perpendicularly, and a second cutout groove extending in a direction perpendicular to the cutout groove is provided inside the bent piece. The wall construction separator according to claim 1 or 2, wherein