JPH07150680A - Square part structure of plaster board - Google Patents

Abstract

PURPOSE:To provide a square shape formation structure of a plaster board having reinforced adhesion. CONSTITUTION:In terms of a square unit structure of a plaster board which forms a notched groove 11 which is substantially V-shaped in its vertical cross section and bends and forms the plaster board by closing the notched groove 11, the cross section of the groove 11 is symmetrical right and left where a part of a bottom side-sheet 20, which is either a front sheet 30 or a rear sheet 20 of the plastic board, is set to one side of the board. The plaster board is arranged to be narrower at a counter bottom seat side and the deepest part is formed on the surface of a plaster board unit side 10 on the front sheet 30 or the rear sheet 20, which is not the bottom side sheet 20. The sheet ends 21 and 22 on the notched groove 11 side on the bottom side sheet 20 are projected on the side of the groove 11 and are formed by bonding the surfaces on the counter plaster unit 10 on the both sheets ends 21 and 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for forming a corner portion of a gypsum board, and more particularly to a structure in which a notch groove is provided in a gypsum board and the corner portion is formed by bending the notch groove. .

[0002]

2. Description of the Related Art A gypsum board is a board formed by coating a gypsum material prepared by mixing calcined gypsum with sawdust and kneading it with water, coating both sides with cardboard, and drying. It is excellent in fireproofing and soundproofing, has little expansion and contraction due to temperature and humidity, but has the property of being weak against shock and moisture. Conventionally, regarding a structure in which a notch groove is provided on a plaster board and the corner is formed by bending the notch groove as a center, a “partition panel” shown in Japanese Utility Model Publication No. 55-43849 or Japanese Patent Publication No. 1-12902 is disclosed. In the "corner panel" shown, a technique has been disclosed in which a so-called "V cut" is applied to a gypsum board to form a cutout groove, and the cutout groove is bent to form a corner portion. .

[0003]

However, the above-mentioned conventional gypsum board corner forming structure has the following problems. That is, the gypsum material that forms the surface of the notch groove has a weak adhesive force even if the gypsum material is overlaid and adhered with an adhesive. Further, since it is a brittle material, it is difficult to fix it with a fixing means such as a nail. Therefore, there is a problem that the corners of the formed gypsum board are easily broken by an external force.

The problem to be solved by the present invention is to provide a corner part forming structure of gypsum board with enhanced adhesive strength.

[0005]

The present invention is to achieve the above-mentioned object. The corner part forming structure of a gypsum board according to claim 1, wherein the gypsum material is a plate-shaped gypsum part (10).
In the gypsum board formed by pasting the front sheet (30) on the front surface and the back sheet (20) on the back surface, the vertical groove has a V-shaped cutout groove (11), and the cutout is formed. Groove (11)
The corner structure of the gypsum board formed by bending the gypsum board by closing the, the groove (11), the cross-section is symmetrical, the front sheet (30) of the gypsum board or the back sheet ( One of the bottom side sheet (20) which is one of the 20) is set as one side, and narrowed toward the opposite bottom sheet (20) side,
The deepest part (14) is formed so as to reach the surface of the front sheet (30) or the back sheet (20) of the bottom sheet (20) that is not the bottom sheet (20), and the bottom sheet (20) is absent. The sheet end portions (21, 22) on the groove (11) side are projected to the side of the recessed groove (11), and the anti-gypsum portion (10) side surfaces of both the sheet end portions (21, 22) are bonded. It is characterized by being formed by

The corner forming structure of the gypsum board according to claim 2 is technically limited to the corner forming structure of the gypsum board according to claim 1, and the groove (11) is provided in the gypsum part (10). )
It is characterized in that both end faces (for example, 12, 13) forming the are bonded by a thermosetting resin adhesive (40).
The corner part forming structure of the gypsum board according to claim 3 is the structure according to claim 2.
The corner forming structure of the gypsum board described is technically limited, and both end faces forming the absent groove (11) in the gypsum part (10).
It is characterized in that (12, 13) is formed into a curved surface that is convex toward the side of the sheet (20) opposite the bottom surface.

The corner forming structure of the gypsum board according to claim 4 is a technical limitation of the corner forming structure of the gypsum board according to claims 1 to 3, and the corner forming structure of the gutter board (11) is as follows. It is characterized in that the front sheet (30), which is not the bottom sheet (20), or the back sheet (20) is formed with a width at the deepest portion (14) reaching the surface on the gypsum portion (10) side.

The corner part forming structure of the gypsum board according to claim 5 is a technical limitation of the corner part forming structure of the gypsum board according to any one of claims 1 to 3, wherein the gypsum part (10) has a gap. It is characterized in that the angles formed by both end faces (12, 13) forming the groove (11) are right angles. The corner forming structure of the gypsum board according to claim 6 is a technical limitation of the corner forming structure of the gypsum board according to any one of claims 1 to 5, and is a groove provided in the bottom side sheet (20). Seat edge on (11) side (21,22)
It is characterized in that the notches (15, 16) are formed by leaving the plaster in the perpendicular line portion that is draped from the sheet toward the anti-bottom surface side sheet (20).

[0009]

[Operation] The corner forming structure of the gypsum board according to claim 1 is formed as follows. First, the bottom sheet (20) which is a part of either the front sheet (30) or the back sheet (20) of the gypsum board is one side, and the anti-bottom sheet
Narrow toward the (20) side, the deepest part (14) is the bottom side sheet (20)
Not the plaster part (10) of the front sheet (30) or back sheet (20)
The groove (11) on the bottom sheet (20)
The recessed groove (11) is formed so that the sheet end portions (21, 22) on the side project toward the recessed groove (11).

And, the anti-gypsum part of both sheet ends (21, 22)
Bond the surface on the (10) side. The adhesive is an adhesive that strongly adheres the front sheet (30) and the back sheet (20). When the bonding is completed, a corner portion is formed on the plaster board with the deepest portion (14) as a projecting corner. At this time, the bottom sheet (20) becomes the surface of the entering corner. The corner forming structure of the gypsum board according to claim 2 is formed as follows.

That is, both end faces (for example, 12, 13) forming the absent groove (11) in the gypsum part (10) are brought close to each other, and the thermosetting resin adhesive (40) is poured therein, and then both sheets Edge (21,2
The surface on the anti-gypsum part (10) side of 2) is bonded. The adhesive (40) made of a thermosetting resin cures between both end faces (for example, 12, 13) forming the recessed groove (11) in the plaster part (10) and is stronger than the invention according to claim 1. Form the corners of a plasterboard.

The corner part forming structure of the gypsum board according to claim 3 is formed as follows. That is, both end surfaces (for example, 12, 13) forming the recessed groove (11) in the gypsum portion (10) are recessed grooves as curved surfaces that are convex toward the opposite bottom surface side sheet (20).
Form (11). Then, the missing groove (1
When both end faces (12, 13) forming 1) are brought close to each other, both end faces (12, 1)
Since the space for pouring the thermosetting resin adhesive (40) is secured between 3), the corners of the gypsum board where the function of the adhesive (40) is sufficiently exerted are formed.

The corner part forming structure of the gypsum board according to claim 4 is formed as follows. That is, the deepest part (14) reaching the surface on the gypsum part (10) side of the front sheet (30) or the back sheet (20) that is not the bottom sheet (20) in the groove (11) has a width. Thus, the groove (11) is formed. Then both ends
Since a space for pouring the thermosetting resin adhesive (40) is secured between (12, 13), corners of the gypsum board where the function of the adhesive (40) is sufficiently exerted are formed. .

The corner portion forming structure of the gypsum board according to claim 5 is formed as follows. That is, the recessed groove (11) is formed so that the angle formed by both end faces (12, 13) of the recessed groove (11) in the plaster part (10) is a right angle. And both ends
(12, 13) close to each other, anti-gypsum part (10) of both seat edge parts (21, 22)
When the side surfaces are adhered, a right angled corner is formed on the plaster board with the deepest part (14) as a right angled corner.

The corner portion forming structure of the gypsum board according to claim 6 is formed as follows. That is, the bottom sheet
When forming the recessed groove (11) so that the sheet end (21, 22) on the side of the recessed groove (11) in (20) protrudes toward the side of the recessed groove (11), the sheet end ( The notch (15, 22) leaving the plaster on the perpendicular line that went down from the anti-bottom side sheet (20) from the (21, 22)
16) is formed. Then, until the anti-gypsum part (10) side surface of both sheet end parts (21, 22) is adhered, both sheet end parts (21, 2)
2) is protected from external force.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to embodiments and drawings. The drawings used here are FIGS. 1 to 6. FIG. 1 is a sectional view showing the concept of the first embodiment of the present invention. FIG. 2 is a sectional view showing the concept of the second embodiment. FIG. 3 is a sectional view showing the concept of the third embodiment of the present invention. FIG. 4 is a sectional view showing the concept of the fourth embodiment. FIG. 5 is a sectional view showing the concept of the fifth embodiment of the present invention. FIG. 6 is a sectional view showing the concept of the sixth embodiment.

First, a first embodiment will be described with reference to FIG. The corner part forming structure of the gypsum board as the first embodiment is adopted in the gypsum board formed by sticking the front sheet 30 on the surface of the plaster part 10 made of a plate-shaped gypsum material and the back sheet 20 on the back surface. It is an embodiment corresponding to claim 1, claim 2, and claim 3 according to the present invention. The front sheet 30 and the back sheet 20 are made of thick paper.

The back sheet 20 of the gypsum board is used as the bottom sheet 20, and a part of the bottom sheet 20 is defined as one side, and the groove 11 is narrowed toward the front sheet 30 side.
Is formed. The absent groove 11 is narrowed toward the front sheet 30 side by the reference slope 12 and the adhesive slope 13,
The deepest portion 14 is formed as an apex to reach the surface of the front sheet 30 on the gypsum portion 10 side. The angle formed by the reference slope 12 and the adhesive slope 13 is a right angle.

The ends of the bottom sheet 20 on the side of the recessed groove 11 are referred to as a reference slope side end 21 and an adhesive slope side end 22. Such sheet end portions 21 and 22 are formed with the cutout groove 11 so as to project toward the cutout groove 11 side. Then, the adhesion slope 13 is brought closer to the reference slope 12 with the deepest part 14 as the center, and the corners of the gypsum board are formed by bonding the surfaces of the sheet end parts 21 and 22 on the side opposite to the gypsum part 10. The angle of the formed corner is a right angle. The adhesive is an adhesive that strongly adheres the front sheet 30 and the back sheet 20,
That is, an adhesive suitable for adhering paper is used.

Subsequently, a second embodiment will be described with reference to FIG.
This will be described in comparison with the first embodiment. This embodiment differs from the first embodiment in that the deepest portion 14 has a width. In the deepest part 14, the end on the reference slope 12 side is the bent part 31, and the end on the adhesive slope 13 side is the non-bent part 32.

In the second embodiment, when the adhesive slope 13 is brought close to the reference slope 12 around the bent portion 31,
A gap is formed between the slopes 12 and 13. Slope 12,
13 is coated with a primer on both sides, and the thermosetting resin adhesive 40 is poured into the gap between the inclined surfaces 12 and 13,
The surfaces of the sheet end portions 21 and 22 on the anti-gypsum portion 10 side are bonded.

The adhesive 40 made of a thermosetting resin is hardened between the reference slope 12 and the adhesive slope 13, and is a corner where only the surfaces of the sheet end portions 21 and 22 on the anti-gypsum portion 10 side are bonded. It is stronger than the part formation structure. continue,
The third embodiment will be described based on FIG. 3 in comparison with the first embodiment.

The difference between this embodiment and the first embodiment is that
Both end faces 12 and 13 forming a groove 11 in the plaster part 10
Is formed into a curved surface that is convex toward the front sheet 30 side. In the third embodiment, when the adhesive slope 13 is brought close to the reference slope 12 with the deepest portion 14 as the center,
A gap is formed between the slopes 12 and 13. Slope 12,
13 is coated with a primer on both sides, and the thermosetting resin adhesive 40 is poured into the gap between the inclined surfaces 12 and 13,
The surfaces of the sheet end portions 21 and 22 on the anti-gypsum portion 10 side are bonded.

Subsequently, a fourth embodiment will be described with reference to FIG.
This will be described in comparison with the second embodiment. This embodiment is different from the second embodiment in that the angle formed by the reference slope 12 and the adhesive slope 13 is an obtuse angle. In the fourth embodiment, when the adhesive slope 13 is brought close to the reference slope 12 around the bent portion 31, a gap is formed between the slopes 12 and 13. The primer is applied to both sides of the slopes 12 and 13, and the adhesive 40 made of a thermosetting resin is poured into the gap between the slopes 12 and 13, and then the surfaces of the sheet end portions 21 and 22 on the side of the anti-gypsum portion 10 are cleaned. To glue. Then, the corner portion of the formed gypsum board becomes an acute angle.

Subsequently, a fifth embodiment will be described with reference to FIG.
This will be described in comparison with the second embodiment. This embodiment differs from the second embodiment in that the angle formed by the reference slope 12 and the adhesive slope 13 is an acute angle. In the fifth embodiment, when the adhesive slope 13 is brought close to the reference slope 12 around the bent portion 31, a gap is formed between the slopes 12 and 13. The primer is applied to both sides of the slopes 12 and 13, and the adhesive 40 made of a thermosetting resin is poured into the gap between the slopes 12 and 13, and then the surfaces of the sheet end portions 21 and 22 on the side of the anti-gypsum portion 10 are cleaned. To glue. Then, the corner portion of the formed gypsum board becomes an obtuse angle.

Subsequently, a sixth embodiment will be described with reference to FIG.
This will be described in comparison with the second embodiment. The difference between this embodiment and the second embodiment is that the plaster is left on the vertical line portion from the reference slope-side end 21 on the side of the recessed groove 11 in the bottom sheet 20 toward the front sheet 30, and the reference slope side. The notch 15 is formed, and the adhesive bevel side notch 16 is formed by leaving the plaster on the vertical line portion that goes down from the adhesive bevel side end 22 toward the front sheet 30.

The cutout groove 11 having the notches 15 and 16 is formed as follows. That is, after performing the router processing perpendicular to the surface that becomes the reference slope side end portion 21 to form the bent portion 31 that reaches the front sheet 30 at the deepest portion, the router processing that is perpendicular to the surface that becomes the adhesive slope side end portion 22 is performed. The deepest part is displaced from the bent part 31 toward the end 22 of the adhesive slope side.

When the notches 15 and 16 are formed, the sheet end portions 21 and 22 are protected from external force until the surfaces of the sheet end portions 21 and 22 on the anti-gypsum portion 1 side are adhered. . According to the above-mentioned embodiment, there is an effect that it is possible to provide the corner portion forming structure of the gypsum board in which the adhesive force is strengthened.

In the above-described embodiment, it is naturally possible to form the front sheet 30 as the bottom sheet.

[0030]

[Effects of the Invention] According to the corner part forming structure of the gypsum board according to the first to sixth aspects, it is possible to provide the corner part forming structure of the gypsum board in which the adhesive force is strengthened.

[Brief description of drawings]

FIG. 1 is a sectional view showing the concept of a first embodiment.

FIG. 2 is a sectional view showing the concept of the second embodiment.

FIG. 3 is a sectional view showing the concept of the third embodiment.

FIG. 4 is a sectional view showing the concept of the fourth embodiment.

FIG. 5 is a sectional view showing the concept of the fifth embodiment.

FIG. 6 is a sectional view showing the concept of a sixth embodiment.

[Explanation of symbols]

10 Gypsum part 11 Missing groove 12 Standard slope 13 Adhesive slope 14 Deepest part 15 Standard slope side notch 16 Adhesive slope side notch 20 Back sheet 21 Standard slope side end 22 Adhesive slope side end 30 Front sheet 31 Bending part 32 Non-bent part 40 Adhesive

Claims (6)

[Claims] 1. A gypsum board formed by sticking a front sheet on the surface of a plaster part made of a plate-shaped gypsum material and a back sheet on the back surface of the plaster material, and forming a notch groove having a substantially V-shaped vertical cross section. And a corner forming structure of the gypsum board formed by bending the gypsum board by closing the groove, the groove having a symmetrical cross section, and the front or back sheet of the gypsum board. Of one of the bottom side sheet as one side, narrowing toward the anti-bottom side sheet side, the deepest part is formed by reaching the surface of the front sheet or the back sheet that is not the bottom side sheet, the gypsum side. The sheet edge on the side of the recessed groove in the bottom sheet is projected to the side of the recessed groove, and the corners of the gypsum board characterized by being formed by adhering the surfaces on the anti-gypsum side of both sheet ends. Part formation structure. 2. The both end surfaces of the gypsum part which form the recessed groove,
The corner part forming structure of a gypsum board according to claim 1, wherein the structure is adhered by an adhesive made of a thermosetting resin. 3. The both end surfaces of the gypsum part, which form the recessed groove,
The corner part forming structure of the gypsum board according to claim 2, wherein the corner part forming structure is formed so as to have a curved surface which is convex on the side opposite to the bottom surface side. 4. The groove is formed with a width at the deepest part reaching the surface of the front sheet or the back sheet which is not the bottom sheet in the cutout groove side. The corner forming structure of the plaster board described. 5. The structure for forming a corner portion of a gypsum board according to any one of claims 1 to 3, wherein an angle formed by both end surfaces of the gypsum portion, which is a groove, is a right angle. 6. The cut portion is formed by leaving plaster on a vertical line portion of the bottom surface side sheet, which extends from the sheet end portion on the side of the recessed groove toward the anti-bottom surface side sheet. The structure for forming a corner portion of the gypsum board according to item 5.