JP3232317U - Decorative formwork and structures - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative formwork used at the time of placing concrete in a structure, which can effectively prevent the occurrence of chipping of a design surface at the time of demolding and reduce labor and cost. SOLUTION: A decorative mold 1 is formed on a plate-shaped base material 2 made of resin, a design forming portion 5 formed on the front surface of the base material and inverted from the design surface, and projecting on the back surface of the base material. The design forming portion includes a plurality of first design ribs 3A projecting from the front surface of the base material and extending in a predetermined first direction, including an outer reinforcing rib 6 and an inner reinforcing rib 7. It has a plurality of second design ribs 3B that are projected and extend in a second direction that intersects the first direction, and a plurality of recesses 4 that are surrounded by the first design rib and the second design rib. The base of the first design rib and each of the second design ribs with respect to the front surface of the base material is characterized by having a rounded surface R2. [Selection diagram] Fig. 1

Description

The present invention relates to a decorative formwork used for applying a design to the surface of concrete after hardening at the time of placing concrete in a structure, and a structure having a design surface formed by using the decorative formwork. ..

For structures with tiled walls as outer walls, the Building Standards Law requires regular inspections to prevent tiles from peeling off or falling off, increasing running costs for maintenance. ..
Therefore, in recent years, a structure that does not require an outer wall material such as a tile by directly applying a design such as a tile pattern or a brick pattern to the surface of concrete has attracted attention. When performing such construction, a decorative formwork having a pattern corresponding to the inner surface (concrete casting surface) of the formwork is used. As this decorative formwork, the applicant of the present invention in Patent Document 1 is provided with a design forming portion that reverses a tile pattern by projecting design ribs in a grid pattern on the front surface of a plate-shaped base material. Is provided.

Utility Model Registration No. 3220244

In the decorative form of Patent Document 1, when the mold is removed, concrete may adhere to the design forming portion and the design surface may be chipped. This chipping is likely to occur at the base of the design ribs that are the outer edges of the tile pattern and at the intersections of the design ribs that are the corners of the tile pattern. For this reason, it takes time and cost to repair the chipped design surface and remove the concrete adhering to the decorative formwork.

Therefore, an object of the present invention is to provide a decorative formwork and a structure capable of effectively preventing the occurrence of chipping of the design surface at the time of demolding and reducing labor and cost.

In order to achieve the above object, the device according to claim 1 is a decorative formwork used for forming a predetermined design surface on the surface of a structure.
It includes a plate-shaped base material formed of resin and a design forming portion formed on one surface of the base material and inverted from the design surface.
The design forming portion includes a plurality of first design ribs projecting from one surface and extending in a predetermined first direction, and a plurality of ribs projecting from one surface and extending in a second direction intersecting the first direction. It has a second design rib and a plurality of recesses surrounded by the first design rib and the second design rib.
The base of each of the first design ribs and each of the second design ribs with one surface is a first radius surface.
According to the second aspect of the present invention, in the above configuration, each recess has a protruding end from the base end side of the first and second design ribs due to the intersection of the first design rib and the second design rib. Four corners extending to the side to form the second rounded surface are formed, and the rounded dimension on the base end side of the second rounded surface is smaller than the rounded dimension on the protruding end side. ..
The device according to claim 3 is characterized in that, in the above configuration, the radius dimension of the first radius surface is 0.5 mm to 2.0 mm.
The invention according to claim 4 is characterized in that, in the above configuration, the radius dimension on the proximal end side of the second radius plane is 3.0 mm to 5.0 mm.
The device according to claim 5 is characterized in that, in the above configuration, the radius dimension on the protruding end side of the second radius surface is 4.0 mm to 6.0 mm.
The invention according to claim 6 is characterized in that, in the above configuration, the protruding height of each of the first design ribs and each of the second design ribs is 2.0 mm to 4.5 mm.
The invention according to claim 7 is characterized in that, in the above configuration, each of the first design ribs and each second design rib has a substantially trapezoidal cross-sectional shape orthogonal to the extending direction.
The invention according to claim 8 is characterized in that, in the above configuration, a reinforcing rib projecting from the other surface of the base material is included.
In order to achieve the above object, the device according to claim 9 is a structure having a design surface formed by using the decorative form according to any one of claims 1 to 8.
The design surface is characterized by having a plurality of groove portions inverted and formed by each of the first design ribs and each second design rib, and a plurality of convex portions formed by being inverted by each concave portion.
The device according to claim 10 is characterized in that, in the above configuration, each groove portion and each convex portion are painted.
The invention according to claim 11 is characterized in that, in the above configuration, each groove portion and each convex portion are painted in a similar color.

According to the present invention, since the base of each of the first design ribs and each of the second design ribs with one surface of the base material is the first radius surface, the design surface may be chipped during demolding. It can be effectively prevented, and labor and cost can be reduced.
Further, in the structure, a good design surface without chipping can be obtained.
According to the invention according to claim 2, in addition to the above effect, four corners serving as the second rounded surface are formed in each recess, and the rounded dimension on the proximal end side of the second rounded surface is determined. Since it is smaller than the radius dimension on the protruding end side, it is possible to effectively prevent chipping at the corners of the recess.
According to the invention according to claim 3, in addition to the above effect, the radius dimension of the first radius surface is 0.5 mm to 2.0 mm, so that the radius dimension effective for chipping prevention can be selected, and the design. The upper aesthetic is also good.
According to the inventions of claims 4 and 5, in addition to the above effects, the radius dimension on the base end side of the second radius plane is set to 3.0 mm to 5.0 mm, and the radius dimension on the protrusion end side is set to 3.0 mm to 5.0 mm. Since it is set to 4.0 mm to 6.0 mm, it is effective in preventing chipping at the corners of the concave portion, and the aesthetic appearance in the design is also good.
According to the invention according to claim 6, in addition to the above effect, the protrusion height of each of the first design ribs and each of the second design ribs is 2.0 mm to 4.5 mm, so that the ribs are chipped. It is possible to improve the design of the tile pattern while trying to prevent it. It is possible to easily separate the grooved portion and the convex portion on the design surface when painting. Further, even when the groove portion and the convex portion on the design surface are painted with similar colors, they can be recognized as joints by shading.
According to the invention according to claim 7, in addition to the above effects, each of the first design ribs and the second design ribs has a substantially trapezoidal cross-sectional shape orthogonal to the extending direction, and thus is demolded. Can be easily done.
According to the invention according to claim 8, in addition to the above effects, by providing the reinforcing ribs on the other surface of the base material, the required strength can be secured even for the base material formed of resin. ..
According to the invention of claim 10, in addition to the above effect, each groove portion and each convex portion are painted, so that a design surface close to an arbitrary tile pattern can be obtained.
According to the invention according to claim 11, in addition to the above effect, each groove portion and each convex portion are painted with similar colors, so that a design surface close to an actual tile pattern can be obtained.

In the perspective view of the decorative form, (A) shows the state seen from the front and (B) shows the state seen from the back. It is a front view of the decorative formwork. (A) is a partially enlarged view of the front surface of the decorative form, and (B) is a sectional view taken along line AA. It is a rear view of the decorative formwork. It is a central vertical sectional view of a decorative form. It is a perspective view which shows the construction state of the decorative formwork. It is a central vertical sectional view which shows the modification example of a decorative form.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view from the front and the back showing an example of the decorative form.
The decorative mold 1 has a plate-shaped base material 2 having a vertically long rectangular shape when viewed from the front, and is pressed with a material having a predetermined plate thickness by mixing polypropylene which is a thermoplastic resin and glass fiber which is a reinforcing fiber. It is molded.
Further, as shown in FIG. 2, on the front surface of the base material 2 on the concrete placing side, the first design ribs 3A, 3A, which extend in the vertical direction (first direction) at equal intervals in the left-right direction. -And the second design ribs 3B, 3B ... which intersect the first design ribs 3A, 3A ... at right angles and extend in the left-right direction (second direction) at equal intervals in the vertical direction. It is installed. Here, the vertical distance between the second design ribs 3B, 3B in the left-right direction is smaller than the left-right distance between the first design ribs 3A, 3A in the vertical direction.

By the first and second design ribs 3A and 3B intersecting in a grid pattern in this way, a plurality of horizontally long rectangular recesses surrounded by the first and second design ribs 3A and 3B are formed on the front surface of the base material 2. 4, 4 ... are formed.
Therefore, on the front surface of the base material 2, a design forming portion 5 that is inverted from the tile pattern that is the design surface of the concrete is formed.

Here, the protrusion heights of the first and second design ribs 3A and 3B from the base material 2 are 2.0 mm to 4.5 mm, and the cross-sectional shape is as shown in FIG. It has a substantially trapezoidal shape whose width decreases toward the protruding side. However, the first and second design ribs 3A and 3B formed on the outer periphery of the base material 2 are each divided into two in the width direction, and when the decorative formwork 1, 1 is arranged vertically or horizontally, they are adjacent to each other. The first and second design ribs 3A and 3B are formed by the halves.
Further, a rounded surface R1 is formed on the ridgeline of the protruding end of the first and second design ribs 3A and 3B, respectively. Further, rounded surfaces R2 are also formed at the base ends (bases with the base material 2) of the first and second design ribs 3A and 3B, respectively. The rounded dimensions of the rounded surfaces R1 and R2 are set in the range of, for example, 0.5 mm to 2.0 mm.
Further, rounded surfaces R3 are also formed at the intersections of the first design ribs 3A and 3B, which are the corners of the recesses 4. The rounded dimension of the rounded surface R3 is larger in the rounded dimension R3b (4.0 mm to 6.0 mm) on the protruding end side than in the rounded dimension R3a (for example, 3.0 mm to 5.0 mm) on the base end side. It is set to.

On the other hand, as shown in FIG. 4, outer reinforcing ribs 6, 6, ... Are projected on the back surface of the base material 2 over the entire circumference of the outer edge. Further, on the back surface of the base material 2 surrounded by the outer reinforcing ribs 6, 6, ..., The outer reinforcing ribs extend along the vertical direction which is the first direction and the left-right direction which is the second direction orthogonal to the vertical direction. Internal reinforcing ribs 7, 7 ... that connect 6 and 6 are provided so as to project. The outer reinforcing ribs 6 and the inner reinforcing ribs 7 form a lattice-shaped reinforcing portion 8 on the back surface of the base material 2. However, the inner reinforcing ribs 7 and 7 extending in the vertical direction are arranged at the center of the base material 2 in the horizontal direction so that the distance between the left and right sides becomes narrow.
As shown in FIG. 3, in the recess 4 on the front side of the base material 2, at a position overlapping the outer reinforcing rib 6 or the inner reinforcing rib 7, pilot holes 9, 9, 9 for screwing to a crosspiece or the like ... Is formed (omitted in FIGS. 1 and 4).

Further, as shown in FIG. 5, here, the thickness S (here, 4 mm) of the base material 2 in the plate thickness direction is smaller than the thickness S1 (here, 8 mm) of the reinforcing portion 8 in the plate thickness direction. There is.
Further, the thickness S of the base material 2 is larger than the thickness S2 (here, 3.5 mm) in the plate thickness direction of the design forming portion 5.
Further, the thickness S1 of the reinforcing portion 8 is larger than the thickness S2 of the design forming portion 5.
The width W1 (here, 30 mm) of each of the reinforcing ribs 6 and 7 of the reinforcing portion 8 is larger than the width W2 (here, 7 mm) of the design ribs 3A and 3B.

As shown in FIG. 6, the decorative formwork 1 configured as described above is provided with vertical crosspieces 10, 10 ... On the back surface at predetermined intervals in the left-right direction, as it is or in a state of being cut as needed. Then, screw it in at the positions of the pilot holes 9, 9, ..., and combine multiple sheets according to the concrete placement area of the structure. Then, the crosspiece 10 of each decorative form 1 is connected to the pipes 11, 11 ... Arranged in the left-right direction on the back side to be integrated. This is built at the position where the reinforcing bars 12 are arranged so that the front surface (design forming portion 5) faces the side to be the design surface of the concrete. On the other hand, on the opposite side of the reinforcing bar 12, a formwork 13 made of plywood or the like to which the crosspiece 10 and the pipe 11 are assembled is similarly built on the back surface.
Then, the separators 14, 14 ... Are passed between the decorative mold 1 and the mold 13, and the foam ties (registered trademarks) 15 and 15 provided at the ends of the separators 14 are attached to the pipe 11 from the outside. After locking and fixing the decorative formwork 1 and the formwork 13, concrete is poured between the decorative formwork 1 and the formwork 13.

When the decorative formwork 1 and the formwork 13 are demolded after the concrete is hardened, the design forming portion 5 of the decorative formwork 1 is inverted on the surface of the concrete on the decorative formwork 1 side, and a plurality of grooves and a plurality of protrusions are formed. A tile-patterned design surface consisting of parts is formed.
At the time of this demolding, a rounded surface R2 is formed at the bases of the first and second design ribs 3A and 3B of the design forming portion 5, and a rounded surface R3 is formed at the corners of each recess 4. Therefore, the design surface is less likely to be chipped. Therefore, there is no need to repair the chipped design surface or remove the concrete adhering to the decorative formwork.
Further, if the design surface is painted with the same color or a similar color for each groove portion and each convex portion, the appearance of the tile pattern is improved.
The demolded decorative form 1 can be used repeatedly after removing the crosspiece 10 and the pipe 11 or with the crosspiece 10 attached as long as it is not damaged.

As described above, according to the decorative mold 1 of the above-described form, the plate-shaped base material 2 made of resin and the design forming portion formed on the front surface (one surface) of the base material 2 and inverted from the design surface. The design forming portion 5 includes a plurality of first design ribs 3A projecting from the front surface of the base material 2 and extending in a predetermined first direction, and projecting from the front surface and intersecting the first direction. It has a plurality of second design ribs 3B extending in the second direction, and a plurality of recesses 4 surrounded by the first design rib 3A and the second design rib 3B, and each of the first design ribs 3A. The base of each of the second design ribs 3B with the front surface of the base material 2 is a rounded surface R2 (first rounded surface).
With this configuration, it is possible to effectively prevent the occurrence of chipping of the design surface at the time of demolding, and it is possible to reduce labor and cost.

In particular, here, each recess 4 extends from the base end side to the projecting end side of the first and second design ribs 3A and 3B due to the intersection of the first design rib 3A and the second design rib 3B. Four corners serving as the rounded surface R3 (second rounded surface) are formed, and the rounded dimension R3a on the base end side is smaller than the rounded dimension R3b on the protruding end side. Therefore, it is possible to effectively prevent chipping at the corners of the recess 4.
Further, by setting the rounded dimension of the rounded surface R2 to 0.5 mm to 2.0 mm, the rounded dimension effective for preventing chipping can be selected, and the aesthetic appearance in the design is also good.
Further, the radius dimension R3a on the base end side of the radius surface R3 is set to 3.0 mm to 5.0 mm, and the radius dimension R3b on the projecting end side is set to 4.0 mm to 6.0 mm, so that the corner of the recess 4 is formed. It is effective in preventing chipping in the part, and the aesthetic appearance of the design is also good.

Further, since the protrusion height of each of the first design ribs 3A and each of the second design ribs 3B is 2.0 mm to 4.5 mm, the design of the tile pattern should be improved while preventing chipping. Can be done. It is possible to easily separate the grooved portion and the convex portion on the design surface when painting. Further, even when the groove portion and the convex portion on the design surface are painted with similar colors, they can be recognized as joints by shading.
Further, since each of the first design ribs 3A and each second design rib 3B has a substantially trapezoidal cross-sectional shape orthogonal to the extending direction, the mold can be easily removed.

Then, in the concrete (structure) having the design surface formed by using the decorative form 1 of the above-described form, the design surface is inverted and formed by each of the first design ribs 3A and each second design rib 3B. By having the plurality of grooved portions and the plurality of convex portions formed by inversion of each of the concave portions 4, it is possible to obtain a good design surface without chipping of the tile pattern.
In particular, if each groove portion and each convex portion are painted with the same color or a similar color, a design surface close to an actual tile pattern can be obtained. When each groove and each convex part are painted with the same color, usually, the entire surface including each groove and each convex part is primed with the same undercoat paint, and then only each convex part has the same color as the undercoat paint. Topcoat with topcoat paint.

The decorative formwork 1 of the above-described form is made of resin so as to include an outer reinforcing rib 6 and an inner reinforcing rib 7 (reinforcing ribs) projecting from the back surface (the other surface) of the base material 2. Is also trying to ensure the required strength. However, the present invention is not limited to this configuration, and the base material 2A having a flat back surface without the outer reinforcing ribs 6 and the inner reinforcing ribs 7 (reinforcing ribs) may be used as in the decorative formwork 1A shown in FIG. it can. The thickness of the base material 2A is larger than that of the base material 2 of the above-described form, but it may be the same. Since the weight has been reduced to a certain extent by using a resin material, this decorative mold 1A can also be used within a range that does not hinder handling. In particular, the decorative mold 1A can be adopted when the weight can be suppressed within a range that can be handled according to the strength characteristics of the resin material used, the standard dimensions of the mold, and the like.

The number and spacing of the first and second design ribs are not limited to the above-mentioned form, and can be appropriately changed according to the required design surface. The grid pattern is not limited to the top, bottom, left, and right, and may be a diagonal grid pattern. The dimensional setting of each rounded surface is not limited to the above form.
On the other hand, the back surface of the base material can be made flat by omitting the reinforcing portion itself.
Further, the relationship between the thicknesses of the base material, the design forming portion, and the reinforcing portion is not limited to the above-mentioned form, and depending on the design surface of the design forming portion, the thickness in the plate thickness direction of the base material may be changed to the plate thickness direction of the design forming portion. The relationship between the thickness and the width may be changed from the above-mentioned form, such as making the thickness larger than the thickness of the above. As the overall shape of the base material, a horizontally long rectangular shape, a square shape, or the like can also be adopted.
Further, the material of the decorative form is not limited to the above-mentioned form, and any thermoplastic resin or reinforcing fiber can be adopted. A simple resin that does not mix reinforcing fibers can also be applied.

1,1A ... decorative formwork, 2,2A ... base material, 3A ... 1st design rib, 3B ... 2nd design rib, 4 ... recess, 5 ... design forming part, 6 ... External reinforcement ribs, 7 internal reinforcement ribs, 8 reinforcements, 10 crosspieces, 11 pipes, 20 concrete, R1 to R3 round surfaces.

Claims (11)

A decorative formwork used to form a predetermined design surface on the surface of a structure.
A plate-shaped base material made of resin and
A design forming portion formed on one surface of the base material and inverted from the design surface is included.
The design forming portion includes a plurality of first design ribs projecting from the one surface and extending in a predetermined first direction, and a second direction projecting from the one surface and intersecting the first direction. It has a plurality of second design ribs extending to, and a plurality of recesses surrounded by the first design rib and the second design rib.
A decorative formwork characterized in that the base of each of the first design ribs and the one surface of each of the second design ribs is a first round surface. Each of the recesses extends from the base end side of the first and second design ribs to the projecting end side by the intersection of the first design rib and the second design rib, and becomes a second rounded surface. The first aspect of the present invention, wherein the four corner portions are formed, and the radius dimension of the base end side on the second radius surface is smaller than the radius dimension of the protrusion end side. Makeup formwork. The decorative form according to claim 1 or 2, wherein the radius dimension of the first radius surface is 0.5 mm to 2.0 mm. The decorative form according to claim 2, wherein the radius dimension on the base end side of the second radius surface is 3.0 mm to 5.0 mm. The decorative form according to claim 2 or 4, wherein the radius dimension on the protruding end side of the second radius surface is 4.0 mm to 6.0 mm. The decorative mold according to any one of claims 1 to 5, wherein the protruding height of each of the first design ribs and each of the second design ribs is 2.0 mm to 4.5 mm. frame. The decorative form according to any one of claims 1 to 6, wherein each of the first design ribs and each of the second design ribs has a substantially trapezoidal cross-sectional shape orthogonal to the extending direction. .. The decorative form according to any one of claims 1 to 7, further comprising a reinforcing rib projecting from the other surface of the base material. A structure having a design surface formed by using the decorative form according to any one of claims 1 to 8.
The design surface is characterized by having a plurality of groove portions inverted and formed by each of the first design ribs and each of the second design ribs, and a plurality of convex portions formed by being inverted by each of the concave portions. Structure to do. The structure according to claim 9, wherein each of the grooved portion and each of the convex portion is painted. The structure according to claim 10, wherein each of the groove portion and each of the convex portions is painted in a similar color.

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