JPH10183625A - Synthetic resin foam block and connecting member therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting member that is less corrosive while requiring less cost for its material, and to provide a synthetic resin foam block that is connectable with the connecting member. SOLUTION: A synthetic resin foam block is for use wherein a layer is formed with a plurality of such blocks arranged lengthwise and breadthwise and the layers each so formed are layered in a plurality of layers. Channels 3, 4 for inserting connecting members for connecting the adjoining synthetic resin foam blocks 2 together therein are formed at sides of each of the synthetic resin foam blocks 2. The connecting members are fitted into the channels 3, 4 of the two synthetic resin foam blocks 2 adjoining each other in the lengthwise and the breadthwise directions and/or in the vertical direction, and these two synthetic reasin foam blocks 2 are connected together.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin foam block used for embankment and the like, and to a connecting member for connecting the synthetic resin foam block.

[0002]

2. Description of the Related Art An embankment method using a synthetic resin foam block made of expanded polystyrene (EPS) or the like is used for embankment on soft ground or sloping ground, embankment for construction of gardens and the like, embedding and burying of underground structures. It is widely used for returning. When such a synthetic resin foam block is laid out vertically and horizontally and stacked in a plurality of layers up and down, the synthetic resin foam blocks adjacent in the vertical and horizontal directions are connected to each other, and the adjacent upper and lower layers are interposed. In order to prevent lateral displacement, it is necessary to connect synthetic resin foam blocks that are vertically adjacent to each other.

Conventionally, various connecting fittings have been used for connecting adjacent synthetic resin foam blocks. For example,
JP-A-62-41822 discloses a mounting plate having upwardly projecting teeth and downwardly projecting teeth,
The above-mentioned teeth are pierced into the upper and lower two layers of synthetic resin foam blocks at the joining portions of the vertically and horizontally adjacent synthetic resin foam blocks to connect the vertically and horizontally and vertically adjacent synthetic resin foam blocks to each other. .

Japanese Unexamined Patent Publication (Kokai) No. 3-250118 discloses a connection fitting in which needles are provided on the upper and lower sides of a disk, and a folded claw is formed at the tip of the needle. The upper and lower two layers of synthetic resin foam blocks are connected to each other by piercing the body into the upper and lower two layers of synthetic resin foam blocks.

Further, as a connecting method using no connecting metal fittings, as shown in FIG. 16, the same synthetic resin foam block (not shown) adjacent to the side of the synthetic resin foam block 1 in the lateral direction is provided. Are formed on the upper surface of the synthetic resin foam block 1, and the convex portion 1 b and the concave portion 1 c for locking with the synthetic resin foam block adjacent to the upper side are formed on the upper surface of the synthetic resin foam block 1. One in which a concave portion 1d and a convex portion 1e for locking with an adjacent synthetic resin foam block are formed has been proposed (see JP-A-6-322744). The convex portion 1f of one synthetic resin foam block adjacent in the lateral direction and the convex portion 1g of another synthetic resin foam block are engaged with the concave portion 1a.

[0006]

However, when the above-described connecting fitting is used, the connecting fitting may be gradually corroded by groundwater or the like, and the connecting strength may be reduced during long-term use. At the same time, since metal is used, there is a problem that the material cost is high.

As shown in FIG. 16, the concave and convex portions provided in the synthetic resin foam block 1 connect the synthetic resin foam block adjacent to the lateral direction and the two upper and lower synthetic resin foam blocks. In this case, the connection work becomes complicated, and the convex portions 1b and 1e and the concave portions 1c and 1c
In order to form d, there has been a problem that the shape of a mold for molding the synthetic resin foam block 1 becomes complicated.

[0008]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems and has a low risk of corrosion and a relatively inexpensive connecting member, and a synthetic resin foam which can be connected using the connecting member. The purpose is to provide blocks. Therefore, the synthetic resin foam block according to claim 1 connects adjacent synthetic resin foam blocks in a synthetic resin foam block used by stacking a plurality of layers formed by laying a plurality of blocks vertically and horizontally. a groove for inserting the coupling member, is characterized in that the form form the side surface of the synthetic resin foam block.

Here, the grooves of the synthetic resin foam blocks adjacent vertically and horizontally and / or vertically are aligned with each other,
The adjacent synthetic resin foam blocks are connected to each other by fitting the connection members into both grooves of the adjacent synthetic resin foam blocks.

According to a second aspect of the present invention, in the synthetic resin foam block according to the first aspect, the groove is formed on a side surface of the synthetic resin foam block so as to extend from an upper surface to a bottom surface of the synthetic resin foam block. It is characterized by having been formed. Here, the connection member can be inserted into the groove on the side surface of the synthetic resin foam block from either the upper side or the lower side.

According to a third aspect of the present invention, there is provided a connecting member which is fitted in the grooves of two synthetic resin foam blocks adjacent to each other in the vertical or horizontal direction, each having the groove according to the first or second aspect. The synthetic resin foam blocks are connected to each other.

According to a fourth aspect of the present invention, in the configuration of the third aspect, the connecting member has two narrow wedge-shaped portions which fit into the grooves of two adjacent synthetic resin foam blocks, respectively, having a narrow width. It has a shape in which the ends are connected to each other. As described above, if the fitting portion of the connecting member to each synthetic resin foam block is formed in a substantially wedge shape, the connecting member does not come off from each synthetic resin foam block.

According to a fifth aspect of the present invention, there is provided a connecting member according to the third or fourth aspect, wherein the connecting member is formed of a synthetic resin.

According to a sixth aspect of the present invention, in the structure of the third or fourth aspect, the connecting member is formed of the same material as the synthetic resin foam block.

According to a seventh aspect of the present invention, in the configuration of the third aspect, the horizontal cross-sectional area of the connecting member is smaller than the horizontal cross-sectional area of the groove in which the connecting member is fitted. It is characterized by the following. In this case, with the connecting member fitted in the groove of the synthetic resin foam block,
Since a gap is formed between the connecting member and the groove, the gap can be used as a drain for draining rainwater or the like.

The connecting member according to an eighth aspect is characterized in that, in any one of the constitutions of the third to seventh aspects, a through-hole penetrating the connecting member in a vertical direction is formed. In this case, the through hole can be used as a drainage channel for draining rainwater or the like.

According to a ninth aspect of the present invention, the connecting member according to any one of the third to eighth aspects is fitted into the groove of each two adjacent synthetic resin foam blocks in the two vertically adjacent block layers. It is characterized by that. Here, the connecting member connects not only the synthetic resin foam blocks adjacent in the vertical or horizontal direction but also the synthetic resin foam blocks in the upper and lower two block layers.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the synthetic resin foam block 2 of this embodiment is formed in a rectangular parallelepiped shape, has two grooves 3 on each side in the long side direction, and has two grooves 3 on each side in the short side direction. It has one groove 4. Each of the grooves 3 and 4 is formed so as to extend from the top surface to the bottom surface of the synthetic resin foam block 2, and has narrow entrance sections 3 a and 4 a having a rectangular cross section and a width wider than these entrance sections 3 a and 4 a. It consists of fitting portions 3b and 4b having a fan-shaped cross section. Groove 3
Is provided at the center of each region where the long side direction of the synthetic resin foam block 2 is bisected, and the groove 4 is provided at the center in the short side direction.

As the material of the synthetic resin foam block 2, various synthetic resins, for example, expanded polystyrene resin such as expanded polystyrene, expanded polyolefin resin such as expanded polyethylene and expanded polypropylene, expanded polyvinyl chloride, expanded phenol resin, Various kinds of foamed polyamides and foamed polyurethanes can be used, but at present, it is most preferable to use foamed polystyrene from the viewpoints of properties such as lightness, water resistance, durability, and cost.

As the molding method of the synthetic resin foam block 2, various molding methods such as in-mold molding and extrusion molding can be adopted, but usually, in-mold molding is preferably used.
In this case, for example, it can be dealt with only by fixing a metal member corresponding to the shape of the grooves 3 and 4 to the inner surface of the conventional mold.

A preferred example of the dimensions of the synthetic resin foam block 2 is that the dimension A in the long side direction is about 2000 mm, the dimension B in the short side direction is about 1000 mm, and the thickness C is 500 mm.
But not limited to these values,
For example, the dimension in each direction can be arbitrarily changed within a range of about 1/3 to 3 times the above value.

When the synthetic resin foam blocks 2 are stacked and embankment is performed, a connecting member 5 used to connect adjacent synthetic resin foam blocks 2 has a rectangular cross section as shown in FIG. A connecting portion 5a having a narrow width and a connecting portion 5a;
Two horizontal section fan-shaped fitting portions 5b located on both sides of
(Substantially wedge-shaped portion).

The width W of the connecting portion 5a is set to be equal to the width W of the inlet portions 3a and 4a in the grooves 3 and 4 of the synthetic resin foam block 2, and the length 2L of the connecting portion 5a is equal to the width of the inlet portion 3a. , Is set to twice the depth dimension L of 4a. The thickness D of the connection member 5 is
The thickness D is preferably set equal to or less than the thickness C. When the thickness D of the connecting member 5 is smaller than the thickness C of the synthetic resin foam block 2, the grooves 3 and 4 do not necessarily need to penetrate in the thickness direction of the synthetic resin foam block 2. The grooves 3 and 4 may be closed near the top surface or the bottom surface of the foam block 2.

Specifically, the length 2L of the connecting portion 5a is 10
About 0 mm, the total length E of the connecting member 5 is about 300 mm, the thickness of the connecting member 5 is about 500 mm, which is the same as that of the synthetic resin foam block 2, and the side face 5 d of the fitting part 5 b forms with the side face 5 c of the connecting part 5 a Is about 120 °. The connecting member 5 is usually formed of the same material as the synthetic resin foam block 2, that is, various synthetic resin foams such as expanded polystyrene. (Non-foamed). For example, in the case of forming with a synthetic resin foam, various molding methods such as in-mold molding and extrusion molding can be adopted as the method of molding the connecting member 5 as in the case of the synthetic resin foam block 2. preferable.

When embankment is performed by laminating the above-mentioned synthetic resin foam blocks 2 in a plurality of layers, first, as shown in FIG. 3, the first layer is spread over the synthetic resin foam blocks 2 vertically and horizontally.
The adjacent synthetic resin foam blocks 2 are connected by fitting the respective fitting portions 5b of the connecting member 5 into the grooves 3 or 4 of the two synthetic resin foam blocks 2 adjacent in the vertical or horizontal direction. . In this case, the synthetic resin foam blocks 2 adjoining in the horizontal direction have a long side dimension of 1 in the long side direction.
/ 2 are shifted.

Although the second and subsequent layers are not shown, the synthetic resin foam blocks 2 may be spread as in the first layer.
Are arranged so that the long side direction of the first layer is orthogonal to the long side direction of the synthetic resin foam block 2 of the first layer. Hereinafter, similarly, in the odd-numbered layer and the even-numbered layer, the synthetic resin foam blocks 2 are arranged such that the long sides thereof are orthogonal to each other. The odd-numbered layers and the even-numbered layers of the synthetic resin foam blocks 2 may be laminated with their long sides aligned.

FIG. 4 shows a second embodiment of the connecting member. The connecting member 6 has two fitting portions 6b (substantially wedge-shaped portions) each having a trapezoidal horizontal cross section formed on both sides of the connecting portion 6a. In this case, as shown in FIG. 5, in a state where the fitting portion 6b of the connecting member 6 is fitted into the groove 3 (or 4) of the synthetic resin foam block 2, the horizontal sectional area of the fitting portion 6b is
, A gap G is formed between the fitting portion 6b and the groove 3 so as to penetrate the synthetic resin foam block 2 in the thickness direction as shown by hatching. The gap G can be used as a drain for draining rainwater, groundwater, and the like.

FIG. 6 shows a procedure for laminating the synthetic resin foam blocks 2 while connecting them using the connecting members 6. First-layer synthetic resin foam block 2-I and connecting member 6-I
Is indicated by a dotted line, and the synthetic resin foam block 2-
II and the connecting member 6-II are indicated by solid lines. here,
The first layer of the synthetic resin foam block 2-I of the first layer and the second layer of the synthetic resin foam block 2-II are laminated such that the long side direction of the second layer is orthogonal to the long side direction of the second layer. The connecting member 6-I and the connecting member 6-II of the second layer are arranged so as to vertically overlap each other in an intersecting manner.

FIG. 7 shows a connecting member 6 of the first and second layers.
The intersection of I and 6-II is shown in an enlarged manner. Gap GI formed between first-layer connecting member 6-I and groove 3 or 4
And a gap G-II formed between the connecting member 6-II of the second layer and the groove 3 or 4 are shown with different hatchings in different inclination directions. A common gap GG of the first layer and the second layer is formed in a portion (cross-hatched portion) where both gaps GI and G-II overlap.

The third and subsequent odd-numbered synthetic resin foam blocks 2 are laminated in the same manner as the first layer, and the fourth and subsequent even-numbered synthetic resin foam blocks 2 are also stacked. Is the second
Since the layers are laminated in the same manner as the layer, the gap GG is eventually
A drainage channel penetrating all the layers of the synthetic resin foam block 2 laminated in a plurality of layers will be formed. in this case,
The area of the gap GG can be adjusted by changing the angle θ between the connecting portion 6a and the fitting portion 6b.

FIG. 8 shows a modification of the connecting member 6. The connecting member 7 has the same outer shape as the connecting member 6 and includes a connecting portion 7a and two fitting portions 7b. However, unlike the connecting member 6, the connecting member 7 penetrates in the thickness direction except an outer edge portion thereof. A large-area through-hole 7c is provided to form a hollow shape. The connecting member 7 is formed of a non-foamed synthetic resin using waste plastic or the like, instead of a synthetic resin foam, in order to ensure strength. The procedure of laminating the synthetic resin foam block 2 using the connecting member 7 is the same as that of FIG. 6, but since the connecting member 7 has a through hole 7c and is hollow, it penetrates a plurality of layers in the vertical direction. The drainage channel will have a large area. In this case, the connecting member 7 may be made of a material other than a synthetic resin such as a metal.

FIG. 9 shows a third embodiment of the connecting member. The connecting member 8 has a shape in which the connecting member 6 of FIG. 5 is divided into two in the thickness direction, and the upper half and the lower half are joined so as to be orthogonal to each other. 8b includes connecting portions 8c and 8d and two fitting portions 8e and 8f, respectively. The upper half 8a and the lower half 8b are integrally formed by in-mold molding or the like.

When the synthetic resin foam block 2 is laminated in a plurality of layers using the connecting member 8, as shown in FIG. 10, the first and second synthetic resin foam blocks 2 are laminated.
Long sides of I and 2-II are perpendicular to each other, and groove 3 or 4
Are arranged so that they overlap vertically. As shown in the cross-sectional views of the first to third layers in FIG. 11, when the first layer is laid, the lower half portion 8b of the connecting member 8-I is connected to the first layer of the synthetic resin foam block. The synthetic resin foam blocks 2-I adjacent to each other in the vertical or horizontal direction of the first layer are connected to each other by fitting into the upper half of the groove 3 or 4 of the 2-I.

Subsequently, at the time of laying the second layer,
By fitting the lower half of each groove 3 or 4 of the synthetic resin foam block 2-II of the layer to the upper half 8a of the connecting member 8-I, the vertical or horizontal direction of the second layer is formed. Connect the synthetic resin foam blocks 2-II adjacent to each other and
The second layer and the second layer of the synthetic resin foam block 2-I, 2-
II are mutually connected by the connecting member 8-I.

Next, the lower half 8b of the connecting member 8-II is
After fitting into the upper half of the synthetic resin foam block 2-II of the third layer, the groove 3 or 3 of the synthetic resin foam block 2-III of the third layer is inserted into the upper half 8a of the connecting member 8-II. 4 is fitted in the lower half. Hereinafter, by repeating the same operation, the vertical and horizontal directions of each layer of the plurality of synthetic resin foam blocks 2 and the adjacent upper and lower layers can be connected only by the connecting member 8. In this case, a gap similar to the gap GG in FIG. 7 is formed between the connecting member 8 and the groove 3 or 4 in the block layer laminated in a plurality of layers, and this gap is used as a drainage channel for draining rainwater or the like. Is done.

FIG. 12 shows a modification of the connecting member 8. The connecting member 9 is composed of an upper half 9a and a lower half 9b, has the same outer shape as the connecting member 8, but has a vertical through hole 9c formed at the center. When the synthetic resin foam block 2 is laminated in a plurality of layers using this connecting member 9, the through holes 9 c of the connecting member 9 that are vertically stacked communicate with each other, and the through holes 9 c also form drainage channels. The properties are further improved.

FIG. 13 shows another modification of the connecting member 8.
The connecting member 10 has the same outer shape as the connecting member 8, but has a hollow shape in which upper and lower halves 10 a and 10 b are provided with vertical through holes 10 c and 10 d, respectively. In this case, the drainage property is further improved.

The grooves 3 of the synthetic resin foam block 2,
The shape of 4 may be other than that shown in FIG.
For example, as shown in FIG. 14, a synthetic resin foam block 2 is provided with an entrance portion 11 having a rectangular horizontal cross section facing the side surface thereof.
a, 12a and grooves 11 and 12 having fitting portions 11b and 12b having a rectangular horizontal cross section wider than the inlet portions 11a and 12a are provided from the top surface to the bottom surface of the synthetic resin foam block 2, Adjacent synthetic resin foam block 2
The H-shaped connecting member 13 can be fitted between the grooves 11 and 12.

Further, as shown in FIG. 15, the synthetic resin foam block 2 is provided with grooves 14 and 15 having a narrow horizontal cross-section on the side facing the side, and a shape corresponding to these grooves 14 and 15. May be fitted between the grooves 14 and 15 of the adjacent synthetic resin foam block 2. Also in those cases, the horizontal cross-sectional area of the connecting member 13 or 16 is made smaller than the horizontal cross-sectional area of the groove 11, 12, or 14, 15,
A drainage gap may be formed between the connecting member 13 or 16 and the groove 11, 12 or 14, 15.

[0040]

As described above, in the synthetic resin foam block according to the first aspect of the present invention, a synthetic resin foam block used by stacking a plurality of layers formed by laying a plurality of blocks vertically and horizontally and arranging the blocks is adjacent to each other. Since the groove for inserting the connecting member for connecting the synthetic resin foam blocks to be formed is formed on the side surface of the synthetic resin foam block, the groove of the synthetic resin foam block adjacent vertically and horizontally and / or vertically is formed. By aligning each other and fitting the connecting member into both grooves of the adjacent synthetic resin foam blocks, the adjacent synthetic resin foam blocks can be connected to each other.

According to a second aspect of the present invention, there is provided a synthetic resin foam block according to the first aspect, wherein the groove is formed on a side surface of the synthetic resin foam block so as to extend from an upper surface to a bottom surface of the synthetic resin foam block. Because it is formed
The connecting member can be inserted into the groove on the side surface of the synthetic resin foam block from either the upper side or the lower side, so that the connecting operation can be easily performed.

The connecting member according to claim 3 is fitted in the grooves of two synthetic resin foam blocks adjacent to each other in the vertical or horizontal direction, each of which has the groove described in claim 1 or 2. Since the synthetic resin foam blocks are connected to each other, the adjacent synthetic resin foam blocks can be firmly connected to each other.

According to a fourth aspect of the present invention, in the configuration of the third aspect, the connecting member has two narrow wedge-shaped portions which fit into the grooves of two adjacent synthetic resin foam blocks, respectively, having a narrow width. Since the end portions are connected to each other, the connecting member does not separate from each synthetic resin foam block.

According to a fifth aspect of the present invention, in the structure of the third or fourth aspect, since the connecting member is formed of a synthetic resin, the connecting member can be manufactured relatively inexpensively, and can be manufactured for a long time. There is an advantage that corrosion is less likely to occur even by the use of. In particular, when the connecting member is manufactured using waste plastic, the manufacturing cost can be reduced and the use of plastic recycling can be expanded.

According to a sixth aspect of the present invention, in the construction of the third or fourth aspect, the connecting member is formed of the same material as the synthetic resin foam block, that is, a synthetic resin foam. In addition, there is an advantage that the connecting member can be manufactured relatively inexpensively, and there is little possibility of corrosion occurring even when used for a long time.

According to a seventh aspect of the present invention, in the structure of any of the third to sixth aspects, the horizontal cross-sectional area of the connecting member is smaller than the horizontal cross-sectional area of the groove into which the connecting member is fitted. Therefore, a gap is formed between the connecting member and the groove in a state where the connecting member is fitted in the groove of the synthetic resin foam block, and this gap is used as a drainage channel for draining rainwater or the like. By doing so, drainage can be improved.

According to the eighth aspect of the present invention, in the connecting member according to any one of the third to seventh aspects, a through-hole that penetrates the connecting member in a vertical direction is formed. By using as a drainage channel for draining water, the drainage property can be improved.

According to a ninth aspect of the present invention, in the configuration of any of the third to eighth aspects, the connecting member is fitted in the groove of each of two adjacent synthetic resin foam blocks in the two vertically adjacent block layers. Therefore, the two connection members can connect two vertically adjacent or two synthetic resin foam blocks adjacent to each other in the upper and lower block layers, and can be connected to the connection between the upper and lower two block layers. There is no need to use metal fittings or the like.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a synthetic resin foam block according to the present invention.

FIG. 2 is a perspective view showing a first embodiment of the connecting member of the present invention.

FIG. 3 is a plan view showing how the synthetic resin foam blocks are connected using the connection member.

FIG. 4 is a perspective view showing a second embodiment of the connecting member.

FIG. 5 is an essential part plan view showing how the synthetic resin foam block is connected by the connecting member of FIG. 4;

6 is a plan view showing how the synthetic resin foam block is connected by the connecting member of FIG. 4;

FIG. 7 is an explanatory plan view showing, by hatching, a gap between the connecting member of FIG. 4 and a groove when the connecting member is vertically stacked;

FIG. 8 is a perspective view showing a modification of the connecting member of FIG. 4;

FIG. 9 is a perspective view showing a third embodiment of the connecting member.

FIG. 10 is a plan view showing a state where the synthetic resin foam block is connected by the connecting member of FIG. 9;

FIG. 11 is a sectional view taken along the line XX of FIG. 10;

FIG. 12 is a perspective view showing a modification of the connecting member of FIG. 9;

FIG. 13 is a perspective view showing another modification of the connecting member of FIG. 9;

FIG. 14 is a plan view showing a second embodiment of the synthetic resin foam block.

FIG. 15 is a plan view showing a third embodiment of the synthetic resin foam block.

FIG. 16 is a perspective view showing a conventional synthetic resin foam block.

[Explanation of symbols]

 2 Synthetic resin foam block 3, 4, 11, 12, 14, 15 Groove 5, 6, 7, 8, 9, 10 Connecting member

Claims (9)

[Claims] In a synthetic resin foam block used by stacking a plurality of layers formed by laying a plurality of blocks vertically and horizontally, a groove for inserting a connecting member for connecting adjacent synthetic resin foam blocks is formed by the groove. A synthetic resin foam block formed on a side surface of the synthetic resin foam block. 2. The synthetic resin foam block according to claim 1, wherein the groove is formed on a side surface of the synthetic resin foam block so as to extend from a top surface to a bottom surface of the synthetic resin foam block. . 3. The two synthetic resin foam blocks each having the groove according to claim 1 or 2 are fitted in the grooves of two vertically or horizontally adjacent synthetic resin foam blocks, and these two synthetic resin foam blocks are connected to each other. A connecting member to be connected. 4. The connecting member has a shape in which two substantially wedge-shaped portions respectively fitted into the grooves of two adjacent synthetic resin foam blocks are connected by narrow ends. The connecting member according to claim 3, wherein 5. The connecting member according to claim 3, wherein the connecting member is formed of a synthetic resin. 6. The connecting member according to claim 3, wherein the connecting member is formed of the same material as the synthetic resin foam block. 7. The connecting member according to claim 3, wherein a horizontal sectional area of the connecting member is smaller than a horizontal sectional area of the groove into which the connecting member is fitted. 8. The connecting member according to claim 3, wherein a through-hole penetrating the connecting member in a vertical direction is formed. 9. The connecting member according to claim 3, wherein the connecting member is fitted in a groove of each of two adjacent synthetic resin foam blocks in two vertically adjacent block layers.