JP2016205017A - Corner material for construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a corner material for construction capable of beautifully finishing a finishing surface of a putty by projection of a corner part, easily winding in a roll shape in a flatly expanded state, hardly causing dislocation between the inside and the outside of a roll, and capable of stably holding a shape of winding in the roll shape.SOLUTION: In a corner material 1 for construction having a hinge part 3 and belt-like plate parts 2 and 2 on its both sides, an angle-shaped projection part 30 projecting from a surface of the hinge part 3, is formed on the surface side of the hinge part 3, and a first recessed part 31 recessed in an angle shape from a reverse surface of the hinge part 3 and having a size capable of storing the projection part 30, is formed on the reverse surface side of the hinge part 3, and a second recessed part 32 is formed by recessing an apex part of the projection part 30, and when bending the plate parts 2 and 2 by the hinge part 3, a bottom part of the second recessed part 32 protrudes, and forms a projection 33 projecting on a surface of the hinge part 3.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a building corner material that has a hinge portion and strip-like flat plate portions provided on both sides of the hinge portion, and is used by bending the flat plate portion at the hinge portion in accordance with a corner portion such as a wall surface. .

For example, when a wall covering material such as wallpaper, fabric, or synthetic resin cloth is attached to the wall of a building, in order to clean the finish, it is necessary to finish the base surface to a flat surface without unevenness. Therefore, for the corners such as the projecting corner and the corner of the wall of the building, a thin synthetic resin flat plate is integrally connected to the left and right sides in the longitudinal direction of the hinge part made of synthetic resin material. Corner materials are used (for example, Patent Documents 1 and 2).
Then, putty is applied to the surface of the wall surface and the corner material for building so as to form a flat surface with no step on the wall surface with the corner material for building, and then a cloth is stuck on the wall surface. Yes.

JP 2011-117209 A Japanese Utility Model Publication No. 62-40030 JP 2010-275683 A

FIG. 3A is a perspective view showing an example in which a building corner material is attached to a corner portion C such as an orthogonal wall surface, and FIG. 3B is a sectional view of FIG.
This building corner material 10 is formed by integrally forming strip-shaped flat plate portions 12 and 12 on both sides of a hinge portion 13. The strip-shaped flat plate portions 12 and 12 are bent at the hinge portion 13 to form a corner portion C such as a wall surface. Install along the wall. Further, the flat plate portions 12 and 12 have a large number of through holes 12a so that the putty applied to the surfaces of the flat plate portions 12 and 12 of the building corner material 10 is favorably held by the building corner material 10 and the wall surface. , 12a are formed.

The putty is applied by placing an appropriate amount of putty on the plate and applying the putty on the wall surface in one direction, and then finishing to a certain thickness. The coating thickness of the putty applied in the building corner material 10 with the plate portions 12 and 12 having a thickness of 0.5 mm is approximately 0.5 mm.
By the way, in this kind of building corner material, what formed the protrusion along the crease | fold part (hinge part) is known (for example, refer patent document 3). By forming such protrusions, the thickness of the putty to be applied can be made constant, or the finish can be made clean by clarifying the ridgeline of the corner portion.

  However, this type of building corner material 10 is often stored in a roll shape with the flat plate portions 12 and 12 on both sides being flattened, and the projections as described above are provided in advance on the hinge portion 13. If it is formed, it becomes difficult to wind the corner material 10 for building in a roll shape, and the flat plate portions 12 and 12 do not adhere to each other inside and outside the roll due to the presence of protrusions, so that it is difficult to hold the rolled shape. There is a problem of becoming stable.

  The present invention has been made to solve such problems, and has a strip-shaped flat plate portion on both sides of a hinge portion. In use, the corner material for construction is used by bending the flat plate portion at the hinge portion. By forming protrusions, the finish surface with putty can be finely finished even if it is not an expert, and it is easy to wind in a roll shape with flat development, and it is difficult to cause deviation between the inside and outside of the roll It aims at providing the corner material for construction which can hold the shape wound in the shape stably.

  In order to solve the above-mentioned problem, the protrusions are not formed in the flat developed state, and the protrusions may be formed when the flat plate portion is bent in accordance with the corner portion during use. As a result of intensive studies by the inventors of the present invention, the building corner material of the present invention has a hinge part and strip-shaped flat plate parts provided on both sides of the hinge part as described in claim 1. In the building corner material, in a state where the hinge portion and the flat plate portion are flat, a chevron-shaped convex portion protruding from the surface of the hinge portion is formed on the surface side of the hinge portion, and the back surface of the hinge portion A first recess having a size that is recessed in a chevron shape from the back surface of the hinge portion and can accommodate the protrusion, and a second recess is formed by recessing the top of the protrusion; It has been conceived that when the flat plate portion is bent at a portion, the bottom portion of the second recess is raised so that a protrusion protruding on the surface of the hinge portion is formed.

Moreover, when the said flat plate part is bent by the said hinge part, the height of the said protrusion formed is about 0.2 mm-0.4 mm from the said surface.
According to the above configuration, in the state in which the flat plate portion is flatly developed, only a small mountain-shaped convex portion is formed on the surface of the hinge portion, which is an obstacle to winding the building corner material into a roll shape. It will not be. In addition, it is possible to wind the corner material for building neatly and to prevent the roll shape from being collapsed by fitting the minute convex portion of the mountain shape into the first concave portion formed on the back surface of the hinge portion. There are advantages. Further, since no projection is formed in the state of winding in a roll shape, the flat plate portion located inside the roll and the flat plate portion located outside can be brought into close contact with each other, and this was also wound into a roll shape. There is an advantage that the shape is hard to collapse.

  Furthermore, in the present invention, as described in claim 3, the height of the protrusion can be controlled by the thickness between the bottom of the first recess and the bottom of the second recess. That is, the height of the protrusion formed by bending the flat plate portion can be easily adjusted by changing the thickness between the bottom portion of the first recess and the bottom portion of the second recess. Is possible.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic view of a building corner material (hereinafter referred to as a corner material) according to an embodiment of the present invention. FIG. 2A is an overall perspective view of the corner material with a part broken away. Sectional view of corner material, (b) is an enlarged view of part A of (a), (c) is part A showing an overlapping state when the corner material for construction is wound in a roll shape with the flat plate part unfolded (D) is an enlarged sectional view of part A showing a state in which protrusions are formed by bending the flat plate part at the hinge part.

  As shown in FIG. 1, the corner material 1 of the present invention has a hinge part 3 and a belt-like flat plate part 2 provided integrally with the hinge part 3 on both sides of the side surface in the longitudinal direction of the hinge part 3. The illustrated corner material 1 is wound, stored, transported, and the like in a roll shape in a state where the hinge portion 3 and the flat plate portion 2 are flat (the state shown in FIG. 1).

  As shown in FIG. 2, on the surface side of the hinge part 3 (upper side of the paper surface), a mountain-shaped convex part 30 protruding from the surface of the hinge part 3 is formed. Further, a first recess 31 that is recessed in a mountain shape from the back surface of the hinge portion 3 is formed on the back surface side (lower side) of the hinge portion 3. As shown in FIG. 2 (c), the first concave portion 31 is a first concave portion of the hinge portion 3 that is positioned outside the roll (upper side in the drawing) when the corner material 1 is wound into a roll shape. It is preferable that the protrusion 30 of the hinge part 3 located on the inner side (the lower side of the figure) is just fitted in 31.

The convex portion 30 is formed with a second concave portion 32 by recessing the top portion. The depth Y5 of the second recess 32 may be about 1/3 to 2/3 of the height of the protrusion 30. Moreover, it is preferable to form the 1st recessed part 31 and the 2nd recessed part 32 so that the center of each bottom part may follow the bending centerline S (refer FIG.1 and FIG.2 (a)) of the hinge part 3. FIG.
The flat plate portion 2 and the hinge portion 3 may be formed of the same type of material or different materials. At least the hinge part 3 is made of a resin material such as vinyl chloride (PVC) so that when the flat plate parts 2 and 2 are bent as will be described later, the bottom part of the second concave part 32 is raised and the projection 33 is formed. Can be used. Such a resin material may contain a plasticizer.

  With the above configuration, when the flat plate portion 2 is bent at a folding center line S passing through the center of the hinge portion 3 in a direction in which the back surfaces of the two flat plate portions 2 and 2 approach each other, the first concave portion is formed on the back surface side of the hinge portion 3. A compressive force acts toward the center of the bottom of 31, and a tensile force acts in the direction of pulling the second recess 32 toward the left and right flat plates 2, 2 on the surface side of the hinge portion 3. As a result, the bottom of the second concave portion 32 of the hinge portion 3 is lifted and raised beyond the ridge line of the convex portion 30 to form a protrusion 33 protruding from the surface of the hinge portion 3 as shown in FIG. Is done.

The height Y4 ′ of the protrusion 33 protruding from the surface of the hinge part 3 varies depending on the thickness Y4 (see FIG. 2B) between the bottom of the first recess 31 and the bottom of the second recess 32. . That is, if the thickness Y4 is increased, the height Y4 'is increased, and if the thickness Y4 is decreased, the height Y4' is decreased. As a result of experiments conducted by the inventor of the present application by forming the hinge portion 3 from vinyl chloride (PVC), the height Y4 ′ of the protrusion 33 protruding from the surface of the flat plate portion 2 is substantially the same as the thickness Y4. all right.
Thus, by setting the size of the thickness Y4 in advance, the height Y4 ′ of the protrusion 33 can be determined.

Since the thickness of the putty applied using this kind of corner material 1 is about 0.5 mm, the height Y4 ′ of the projection 33 may be in the range of about 0.2 mm to 0.4 mm. The thickness Y4 may be set in the range of 0.2 mm to 0.4 mm.
Examples of the dimensions of each part of the corner material 1 (indicated by reference symbols Y1, Y2, Y3, Y4, Y5, and X1 in FIG. 2B) include the following.
That is, the thickness Y1 of the flat plate portion 2 = 0.5 mm, the height Y2 of the convex portion 30 from the surface of the hinge portion 3 = 0.15 mm, the distance X1 between the ridges of the convex portion 30 = 0.6 mm, the hinge portion 3 Depth Y3 = 0.4 mm to 0.2 mm, wall thickness Y4 = 0.2 mm to 0.4 mm, depth Y5 = 0. It can be set to 05 mm to 0.1 mm.
For example, the hinge 3 is made of vinyl chloride (PVC), the depth Y3 of the first recess 31 = 0.4 mm, the thickness Y4 = 0.2 mm, and the depth Y5 of the second recess 32 = 0.05 mm. As shown in FIG. 2D, when the flat plate portions 2 and 2 are bent at a substantially right angle, the height Y4 ′ of the projection 33 becomes approximately 0.2 mm.
In FIG. 2D, the protrusion 33 is shown in an arc shape in cross section. However, since the diameter of the protrusion 33 is substantially the same as the distance X1, the protrusion 33 is actually quite sharp. Even so, the ridgeline at the corner can be clarified.

Although the preferred embodiments of the present invention have been described, the present invention is not limited to the above description.
For example, in the above description, it has been described that at least the hinge 3 is preferably formed of a resin material such as vinyl chloride. However, the bottom of the second recess 32 is raised by bending the flat plate portions 2 and 2, and the projection 33 is formed. As long as the material has the property of forming, not only the resin material but also other materials such as metal may be used. In addition to the resin material, one or both of the flat plate portions 2 and 2 may be formed of paper, metal, or other material that may be used for this kind of corner material.
Furthermore, the thickness (0.5 mm) of the flat plate portions 2 and 2 and the hinge portion 3 shown in the above embodiment is an example, and the present invention can be applied to corner materials having other thicknesses.

  The present invention can be widely applied to a corner material for construction that is attached to a corner portion of a wall surface of a building.

It is the schematic of the corner material concerning suitable embodiment of this invention, and is the whole perspective view of the corner material which fractured | ruptured partially. (A) is a cross-sectional view of the corner material of FIG. 1, (b) is an enlarged view of part A of (a), and (c) is when the corner material for construction is wound in a roll shape with the flat plate portion developed. The expanded sectional view of the A section which shows the overlapping state of (a), (d) is an expanded sectional view of the A section which shows the state by which a projection is formed by bending a flat plate part with a hinge part. It is a perspective view which shows an example of the well-known corner material which consists of a hinge part and a flat plate part, (b) is sectional drawing of (a) concerning the prior art example of this invention.

DESCRIPTION OF SYMBOLS 1,10: (For construction) Corner material 2, 12: Flat plate part 2a, 12a: Hole 3, 13: Hinge part 30: Convex part 31: First recessed part 32: Second recessed part 33: Protrusion C: Corner part S: Bending center line

In order to solve the above-mentioned problem, the protrusions are not formed in the flat developed state, and the protrusions may be formed when the flat plate portion is bent in accordance with the corner portion during use. As a result of intensive studies by the inventors of the present invention, the building corner material according to the present invention is, as described in claim 1, a hinge portion formed of vinyl chloride and strips provided on both sides of the hinge portion. In the corner material for building having a flat plate portion, a mountain-shaped convex portion protruding from the surface of the hinge portion is formed on the surface side of the hinge portion in a state where the hinge portion and the flat plate portion are flattened. And forming a first recess having a size recessed from the back surface of the hinge portion and having a size capable of accommodating the projection on the back side of the hinge portion, and recessing the top of the projection to form a second recess When the flat plate portion is bent at the hinge portion, the bottom portion of the second recess is raised, and a protrusion protruding on the surface of the hinge portion is formed. I came up with it. The height of the protrusion from the surface of the flat plate portion can be adjusted by the thickness of the hinge portion between the bottom portion of the first recess and the bottom portion of the second recess, It has been found that if the film is made of vinyl chloride, the height becomes the same as the thickness.

Claims (3)

In a building corner material having a hinge part and a strip-shaped flat part provided on both sides of the hinge part,
With the hinge part and the flat plate part being flat,
On the surface side of the hinge part, a chevron-shaped convex part protruding from the surface of the hinge part is formed,
On the back side of the hinge part, a first recess having a size that can be recessed from the back side of the hinge part and accommodate the convex part is formed,
The top of the projection is recessed to form a second recess,
When the flat plate portion is bent at the hinge portion, the bottom portion of the second recess is raised to form a protrusion protruding on the surface of the hinge portion;
Architectural corner material characterized by The building corner material according to claim 1, wherein a height of the protrusion from the surface when the flat plate portion is bent at the hinge portion is 0.2 mm to 0.4 mm. Controlling the height of the protrusion by the thickness between the bottom of the first recess and the bottom of the second recess;
The building corner material according to claim 1 or 2, characterized in that:

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