JPH11247333A - Resin block assembly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resin block assembly so as not to lower mechanical strength for load acting in one direction to the minimum than that of load acting in the other direction. SOLUTION: Each resin block 10, 20 comprises a hollow and substantially rectangular parallelopiped extrusion molding, and has enclosed bag-like inside spaces 10a, 10b partitioned by a pair of opposite display walls 10b, 20b and two pairs of respectively connection walls 10c, 20c connected to adjacent resin blocks and opposite each other. A first adjacent resin block 10 and second resin blocks 20 are connected by an irregular fitting part formed on each connection wall 10c, 20c. Each resin block 10, 20 has two pairs of opposite walls against load from either direction in three pairs of mutually opposite face directions and displays constant mechanical strength.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a resin block assembly. The resin block assembly of the present invention, for example,
It can be suitably used for walls and floors of fences and houses.

[0002]

2. Description of the Related Art Conventionally, as a resin block assembly which can be used for a wall or the like, a resin block assembly disclosed in Japanese Patent Application Laid-Open No. 8-158507 is known. As shown in FIGS. 13 to 15, the resin block assembly has a plurality of resin blocks 80 stacked in a stacking direction H (the vertical direction in FIG. 15 and the direction of the arrow H in FIGS. 13 and 15; the same applies hereinafter). The resin block group formed in the longitudinal direction (the horizontal direction in FIG.
3 and L direction of FIG. The same applies hereinafter).

[0003] Each resin block 80 is made of a thermoplastic resin, and is divided into three sections by an outer wall and two partition walls.
It has two internal spaces 80a, 80b, 80c. Each of the internal spaces 80a, 80b, 80c extends continuously in the longitudinal direction L, and both ends in the longitudinal direction L are open to the outside. That is, each resin block 80 does not have a side wall that forms a facing surface facing the longitudinal direction L.

[0004] Each resin block 80 is provided with a fitting projection 8.
It has fitting recesses 82, 82 at its lower end, which have fittings 81 at its upper end and which can be fitted to the fitting convex portion 81, and has a pair of through holes 83, 83 penetrating in the stacking direction H. ing. In each resin block group, the resin blocks 80, 80 stacked vertically are connected to each other by the concave and convex fitting of the fitting projection 81 and the fitting recess 82. In addition, a plurality of reinforcing bars 84 implanted at regular intervals in the longitudinal direction L are inserted into the respective through holes 83. Preferably, mortar is buried in the gap between each through hole 83 and each reinforcing bar 84 in order to increase the mechanical strength of the resin block group.

[0005]

However, each of the resin blocks 80 constituting the above-mentioned conventional resin block assembly is required.
However, due to its structure, there is a problem that mechanical strength against a load acting in the laminating direction H is weaker than that against a load acting in the longitudinal direction L. That is, in the resin block 80, as described above, each internal space 80a,
80b and 80c penetrate in the longitudinal direction L and are open at both ends to the outside, and are not provided with side walls that form opposing surfaces facing in the longitudinal direction L. Since such a side wall can withstand a load acting in the laminating direction H, the conventional resin block 80 has no mechanical side against the load acting in the laminating direction H due to the absence of the side wall. Strength decreases.

Although not disclosed in Japanese Patent Application Laid-Open No. 8-158507, the resin block 80 has the same cross-sectional shape perpendicular to the longitudinal direction L in the longitudinal direction L (FIG. 14). ), And is considered to be an extruded product extruded with the longitudinal direction L as the extrusion direction. In such extrusion molding, it is not possible to provide a side wall that forms a facing surface that faces the longitudinal direction L, which is the extrusion direction.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and is directed to a three-sided opposing surface of a substantially rectangular parallelepiped resin block. It is a technical problem to be solved to provide a resin block assembly whose strength is not extremely reduced than that of a load acting in another direction.

[0008]

According to a first aspect of the present invention, there is provided a resin block assembly formed by assembling a plurality of resin blocks each formed of a hollow and substantially rectangular parallelepiped injection molded product. Each of the resin blocks is connected to a pair of display walls facing each other, and an adjacent resin block,
Each of the resin blocks has a sealed bag-shaped internal space defined by two pairs of opposing connection walls, and the resin blocks are connected to each other by concave and convex fitting portions formed on the connection walls. It is characterized by the following.

In this resin block assembly, since each resin block has a sealed bag-shaped internal space defined by a pair of display walls and two pairs of connection walls, a substantially rectangular parallelepiped resin block is formed. It has two pairs of opposing walls that can oppose loads from any direction in three opposing opposing surface directions. For this reason, it exerts a constant mechanical strength against a load acting in any of the above-mentioned facing surface directions, and a mechanical strength against a load acting in one direction acts in the other direction. There is no drastic drop below that for the applied load.

[0010] Further, since the connection between the resin blocks is performed by the concave-convex fitting, the assembling becomes easy. (2) The resin block assembly according to the second aspect is the first aspect.
In the resin block assembly described above, each of the resin blocks is a combination product made hollow by combining a plurality of injection molded products.

In this resin block assembly, since each resin block is made hollow by combining components formed by injection molding, when forming a resin block having an internal space in the form of a closed bag, the shape of the resin block is reduced. The degree of freedom increases. (3) The resin block assembly according to the third aspect is the first aspect.
In the resin block assembly described above, each of the resin blocks is a single piece made hollow by blow injection molding.

In this resin block assembly, since the resin block is a single piece made hollow by blow injection molding, it is possible to omit the steps of assembling each component and to simplify the resin block manufacturing process. Can be planned. (4) The resin block assembly according to a fourth aspect of the present invention is the resin block assembly according to the first, second or third aspect, wherein each of the resin blocks has a ventilation hole that communicates the internal space with the outside. It is characterized by having.

In a resin block having a closed bag-shaped internal space, air in the internal space expands and expands due to a temperature change.
Due to the contraction, stress acts on the outer wall (the pair of display walls and the two pairs of connection walls that divide the internal space) constituting the resin block. For this reason, the resin block may be deformed. In this regard, in this resin block assembly,
Since each resin block has a ventilation hole communicating the internal space with the outside, air moves between the internal space and the outside. For this reason, the influence of the expansion and contraction due to the temperature change can be eliminated, and the deformation and the like of the resin block due to the expansion and contraction of the air in the internal space can be prevented. (5) The resin block assembly according to the fifth aspect is the resin block assembly according to the first, second, third or fourth aspect,
Each of the resin blocks is characterized in that at least one of a reinforcing agent for improving rigidity and a flame retardant for improving flame retardancy is added to the resin material.

In this resin block assembly, since a reinforcing agent and a flame retardant are added to each resin block, the rigidity can be improved and the flame retardancy can be achieved.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION A resin block according to the present invention comprises a hollow, substantially rectangular parallelepiped injection molded product. The resin block may be a combined product formed by combining a plurality of injection molded products, or may be a single product formed by injection blow molding. The type of resin used for the resin block is not particularly limited, and may be transparent, translucent, or opaque. In addition, a reinforcing agent such as glass fiber may be added to the resin material of the resin block to improve rigidity, or a flame retardant such as aluminum hydroxide may be added to improve flame retardancy.

This resin block has a sealed bag-shaped internal space which is connected to a pair of display walls facing each other and an adjacent resin block and is partitioned by two pairs of connection walls each facing each other. I have. The pair of display walls and the two pairs of connection walls are orthogonal to each other. In a preferred aspect, the resin block according to the present invention has a ventilation hole that communicates the internal space with the outside. The shape of this vent,
The size, number, etc. are not particularly limited as long as they cause the movement of air between the internal space and the outside, and are appropriately set within a range capable of maintaining the required rigidity as a wall constituting the resin block. You. However, it is preferable that the ventilation holes are provided on the connection wall with the adjacent resin block in consideration of designability and the like.

In a preferred embodiment, the resin block includes a resin base forming a pair of display walls and two pairs of connection walls, and a portion corresponding to the pair of display walls on an outer surface of the resin base. And a resin film bonded to the outer surface of the resin. The type of the resin of the resin film is not particularly limited, but may include, for example, heat-sealing property with a resin base and characteristics (mechanical strength, impact resistance, heat resistance, chemical resistance, and the like) required as a product. In consideration of the above, it can be appropriately selected from acrylic resins, silicone resins, hydrocarbon resins such as polystyrene, polycarbonate (PC), polymethyl methacrylate (PMMA), acrylonitrile-styrene resin (AS), polystyrene and the like.

Further, on the outer surface of the resin film, if necessary, a desired functional film such as a scratch-resistant film or an anti-fogging film can be formed. That is, when it is desired to enhance the scratch resistance of the resin film, a hard coating agent such as an epoxy resin, an acrylic resin, or a silicon resin is coated on the outer surface of the resin film, and then cured by heat or ultraviolet rays. The hard coat film formed by this may be formed. When it is desired to increase the anti-fogging property, a water-soluble resin-based coating agent may be coated and then cured by heat or ultraviolet rays to form an anti-fogging film.

Further, it is possible to apply a printing ink to the surface of the resin film to be bonded to the resin substrate, if necessary. That is, an arbitrary pattern can be added by applying printing ink for the purpose of enhancing the decorativeness of the design surface. In addition, as the printing ink, a polyester-based or acrylic-based resin or the like can be used.

The resin block having such a structure is obtained by, for example, injecting a molten resin of a resin base while inserting a resin film into a mold, and injection-molding a portion of the resin base corresponding to an opposing outer wall serving as a display portion. Thereby, an injection molded product in which the resin film and the resin base are joined by heat fusion is formed, and this injection molded product can be combined with another injection molded product to complete a resin block.

Then, the resin blocks having the above-described structures are connected to each other by asperity fitting and assembled to form a resin block assembly. The concave / convex fitting portion that enables the concave / convex fitting is formed on a connection wall between adjacent resin blocks.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the resin block and the resin block assembly of the present invention will be specifically described below with reference to the drawings. (Embodiment 1) The resin block assembly of the present embodiment shown in FIGS. 1 to 8 is assembled so that a first resin block 10 and a second resin block 20 are adjacent to each other.

Each of the first resin block 10 and the second resin block 20 is a substantially rectangular parallelepiped injection-molded article having a hollow display wall (upper and lower surfaces in FIG. 1) having a square shape.
It has closed-bag-shaped internal spaces 10a and 20a defined by a pair of display walls 10b and 20b facing each other and two pairs of connection walls 10c and 20c facing each other.

Here, as shown in FIG. 3, the first resin block 10 includes a pair of display walls 10b, 10b and two pairs of connection walls 10c, 10c (FIG. 3 shows two pairs of connection walls. (Only the pair of connection walls 10c, 10c are drawn.) And the outer surface of the resin substrate 11, which corresponds to the pair of display walls 10b, 10b. It is composed of a pair of resin films 12 and 12 joined respectively. The two pairs of connecting walls 10c and 10c have a central convex portion 13 and the central convex portion 1 respectively.
3 and an annular recessed portion 14 formed around the periphery. In addition, the first resin block 10 is divided into two at the joint S (see FIG. 3) at the connection wall 10c, and is a combined product obtained by combining two injection molded products.

The resin substrate 11 is made of a colored polycarbonate (PC) resin or a polycarbonate resin to which additives such as glass fiber as a reinforcing agent and aluminum hydroxide as a flame retardant are added. It is thick. The resin substrate 11 is made of glass of polycarbonate resin. Each of the resin films 12 is a transparent resin film body 12a and a functional film formed on the outer surface of the resin film body 12a as shown in FIG. Hard coat film 12b and resin film body 12
and a printing ink film 12c formed on the bonding surface with the resin substrate 11 on the surface a.

The resin film body 12a is made of a transparent polycarbonate (PC) resin and has a thickness of 150
５００500 μm. The hard coat film 12b is formed by coating the outer surface of the resin film main body 12a with a hard coating agent and then heat-curing in order to improve the scratch resistance of the resin film main body 12a. Become. The printing ink film 12c is provided to add a predetermined pattern to the display unit, is made of a polyester resin, and is formed by applying and drying a solution of the resin by an ordinary method.

As shown in FIG. 6 and FIG. 7, the connection space 10c of the first resin block 10 and the portion of the joint S are connected to the internal space 10a and the outside, so that the space between the two is formed. A plurality of ventilation holes 15 that allow air movement are provided. The first resin block 10 having the above-described configuration was manufactured by joining two injection-molded products obtained by injection-molding the resin base 11 while inserting the resin film 12 with an adhesive.

On the other hand, as shown in FIG. 4, the second resin block 20 includes a pair of display walls 20b, 20b and two pairs of connecting walls 20c, 20c (FIG. (Only the pair of connecting walls 20c, 20c are shown.)
And a pair of resin films 2 joined to the outer surfaces of the resin substrate 21 at portions corresponding to the pair of display walls 20b, 20b, respectively.
2 and 22. Also, two pairs of connecting walls 2
0c and 20c include a central concave portion 23 that can be fitted to the central convex portion 13 of the first resin block 10;
, And an annular convex portion 24 that can be fitted into the annular concave portion 14 of the first resin block 10 is provided on each of the first resin block 10 and the first resin block 10. In addition, the second resin block 20 is divided into three at the connection wall 20c by two joints S (see FIG. 4), and is a combined product obtained by combining and joining three injection molded products.

The above resin substrate 21 and resin film 22
Has the same configuration as the resin base 11 and the resin film 12 of the first resin block, respectively, and the second resin block 20 is also manufactured by a method similar to the method of manufacturing the first resin block 10. Similarly to the first resin block 10, the connecting space between the connecting wall of the second resin block 20 and the joint portion S communicates the internal space 20a with the outside to enable air movement between them. Ventilation holes are provided.

The central convex portion 13 and the central concave portion 2
3 form a fitting concave-convex portion that fits with each other, and the annular concave portion 14 and the annular convex portion 24 form a fitting concave-convex portion that fits with each other. Then, the first resin block 10 and the second resin block 20 are connected and assembled by concavo-convex fitting so as to be adjacent to each other, whereby a resin block assembly can be obtained. That is, the central convex portion 13 of the first resin block 10 and the central concave portion 23 of the second resin block 20 are fitted, and the annular concave portion 14 of the first resin block 10 and the annular convex portion 24 of the second resin block are connected. By fitting, the first resin block 10 and the second resin block 20 are connected and assembled alternately in the vertical and horizontal directions in FIG.

Here, in the present embodiment, a predetermined gap C is formed between the first resin block 10 and the second resin block 20 in such an assembled state.
reference). By interposing the adhesive 30 in the gap C, the first resin block 10 and the second resin block 20 are securely fixed and the sealing property between them is ensured, thereby completing the resin block assembly. I do.

In addition, a mounting portion having a fitting portion which can be fitted to the annular concave portion 14 of the first resin block 10 or the annular convex portion 24 of the second resin block 20 is provided around the resin block assembly as necessary. A frame (shown by a two-dot chain line in FIG. 1) W is attached via an adhesive. Further, in the resin block assembly described above, in the first resin block 10 and the second resin block 20 adjacent to each other, the internal space 10a and the internal space 20a are respectively interposed via the ventilation hole 15 and the gap between the concave and convex fitting portions. Are in communication. In FIG. 1, the upper and lower end surfaces of the central convex portion 13 of the first resin block 10 and the second
The upper and lower end surfaces of the central concave portion 23 of the resin block 20 are drawn so as to be in close contact with each other, but actually have a gap that allows air to move. Therefore, in the above resin block assembly, the interior space 10a of each first resin block 10 and the interior space 20a of each second resin block 20 communicate with each other, and
Oa and 20a are also communicated with the outside around the resin block assembly so that air can move.

The first resin block 10 having the above configuration,
The second resin block 20 includes three pairs of opposing walls (a pair of display walls 10b, 20b and two pairs of connection walls 10c, 2c).
0c), a closed bag-shaped inner space 10a, 2
0a, the resin blocks 10, 20
Have three pairs of opposing walls that can oppose loads from any direction. For this reason, it exerts a certain mechanical strength for loads acting in any direction, and the mechanical strength for loads acting in one direction is more extreme than that for loads acting in the other direction. It does not decrease.

Each first resin block 10 and each second resin block 10
Since the resin block 20 is a combination product obtained by combining components formed by injection molding, the resin block 20 has a high degree of freedom in shape, and it is possible to easily form an arbitrary-shaped uneven fitting portion on the connection walls 10c and 20c. is there. Furthermore, each internal space 1
0a and 20a have air movement between the outside and the outside through the vent hole 15. For this reason, the influence of expansion and contraction due to temperature change can be eliminated, and it becomes possible to prevent deformation and the like of the resin blocks 10 and 20 due to expansion and contraction of air in the internal spaces 10a and 20a.

Here, in this embodiment, the adhesive 3
When a material having elasticity, for example, polyurethane (additional type, kinematic viscoelasticity at room temperature: 3 to 5 MPa) is used as 0, the following operation and effects are also exerted. That is, due to the presence of the predetermined gap C provided between the first resin block 10 and the second resin block 20 (including between the concave and convex fitting portions), the first resin block 10 and the second resin block 20 themselves become environmentally harmful. Allow to expand due to change. And
Since the adhesive 30 having a predetermined elasticity is interposed in the gap C, the expansion of the first resin block 10 and the second resin block 20 themselves is absorbed by the elastic deformation of the adhesive 30. Therefore, even if the first resin block 10 and the second resin block 20 themselves expand significantly due to a change in the environment, the first resin block 10
Since the deformation of the second resin block 20 is absorbed by the elastic deformation of the adhesive 30, the first resin block 10 and the second resin block 20 can be effectively prevented from being distorted. Also, when the first resin block 10 and the second resin block 20 shrink, they are also absorbed by the elastic deformation of the adhesive 30. Therefore, when the first resin block 10 and the second resin block 20 themselves shrink significantly. Even if it does, the adhesive 30 will not be broken or peeled off, and it is possible to reliably ensure the reliability and the sealing property between the first resin block 10 and the second resin block 20 for fixing.

(Embodiment 2) In the resin block assembly of this embodiment shown in FIGS. 9 to 11, the shape of each resin block is improved by devising the shape of the concave and convex fitting portion for connecting the resin blocks. The other configuration is the same as that of the first embodiment. That is, the resin block 40 according to the present embodiment
Is a substantially rectangular parallelepiped injection-molded product having a hollow design wall (upper and lower surfaces in FIG. 9) having a square shape, similar to the resin block of Example 1, and a pair of opposing display walls 40b. It has an internal space 40a in the form of a sealed bag that is partitioned by two pairs of connection walls 40c opposed to each other.

As shown in FIG. 11, the resin block 40 has a pair of display walls 40b and two pairs of connection walls 40c (FIG. 11 shows a pair of connection walls 40b of the two pairs of connection walls).
Only c and 40c are drawn. ), And a pair of resin films 42, 42 joined to the outer surfaces of the resin base 41 at portions corresponding to the pair of display walls 40b, 40b, respectively. ing.

In the resin block 40, a fitting projection 43 is provided on one of a pair of opposed connection walls 40c, 40c, and the resin block 40 is provided with a fitting projection 43 on one of the opposed connection walls 40c, 40c. On the other hand, a fitting recess 44 that can be fitted to the fitting projection 43 is provided. Further, a similar fitting convex portion 43 and a similar fitting concave portion 43 are provided on another pair of connecting walls facing each other.

The resin block 40 is connected to the connection wall 4.
At 0c, the part is divided into two parts at the joint S (see FIG. 11), and the two parts are combined and joined by combining two injection molded parts. The resin block 40 having such a configuration,
In the direction in which the resin blocks 40 are arranged, the fitting protrusions 43 of each resin block 40 are arranged so as to face the same direction,
Then, between the adjacent resin blocks 40, the fitting protrusion 43 of one resin block 40 and the fitting recess 44 of the other resin block 40 are connected by uneven fitting. Then, as in the first embodiment, the resin block assembly can be completed by interposing the adhesive 30 in a predetermined gap C formed between adjacent resin blocks.

In the resin block assembly of this embodiment, since each resin block 40 has the same shape, it is possible to facilitate the assembly work and reduce the cost. (Embodiment 3) The resin block 50 according to the embodiment is shown in FIG.
As shown in FIG. 7, the single block has the same shape as the resin block 40 according to the second embodiment and is formed by blow injection molding.

That is, the resin block 50 is a blow-injection molded article having a substantially rectangular parallelepiped shape in which the display walls (both upper and lower surfaces in FIG. 12) are hollow and have a design surface, and a pair of display walls 50b opposed to each other. Has an internal space 50a in the form of a sealed bag defined by two pairs of connection walls 50c opposed to each other. Note that the resin block 50 is made of only a resin base, and no resin film is bonded to the display wall 50b.

As in the case of the resin block 40 of the second embodiment, a fitting projection 53 and a fitting recess 54 are provided on two pairs of connection walls 50c opposed to each other. The resin block 50 having such a configuration can be used as a resin block assembly in the same manner as in the second embodiment. In this embodiment, since each resin block 50 is a single product formed by blow injection molding, it is possible to omit steps such as combining each component, and to simplify the manufacturing process of the resin block 50. .

[0043]

As described in detail above, in the resin block assembly of the present invention, three pairs of opposing surfaces are opposed to each other.
Exhibits constant mechanical strength for loads acting in any direction, and the mechanical strength for loads acting in one direction is extremely lower than that for loads acting in the other direction. There is no such thing.

When each resin block is provided with a vent hole for communicating the internal space with the outside, it is possible to prevent deformation of the resin block due to expansion and contraction of air in the internal space. Become.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a resin block assembly according to a first embodiment, which is a cross-sectional view taken along line AA of FIG. 2;

FIG. 2 is a plan view of the resin block assembly according to the first embodiment.

FIG. 3 is a cross-sectional view of a first resin block according to the first embodiment.

FIG. 4 is a cross-sectional view of a second resin block according to the first embodiment.

FIG. 5 is a partially enlarged cross-sectional view showing a configuration of a resin film according to Example 1.

FIG. 6 is a partially enlarged cross-sectional view illustrating a vent according to the first embodiment.

FIG. 7 is a partial side view illustrating a ventilation hole according to the first embodiment.

FIG. 8 is a partially enlarged cross-sectional view showing a boundary between a first resin block and a second resin block according to the first embodiment.

9 is a cross-sectional view of the resin block assembly according to the second embodiment, which is a cross-sectional view taken along line BB of FIG.

FIG. 10 is a plan view of a resin block assembly according to a second embodiment.

FIG. 11 is a sectional view of a resin block according to the second embodiment.

FIG. 12 is a sectional view of a resin block according to the third embodiment.

FIG. 13 is a perspective view of a conventional resin block.

FIG. 14 is a sectional view of a conventional resin block.

FIG. 15 is a front view of a conventional resin block assembly.

[Explanation of symbols]

10 First resin block 20 Second resin block 40, 50 Resin block 10a, 20a, 40a, 50a Internal space 10b, 20b, 40b, 50b Display wall 10c, 20c, 40c, 50c Connection wall 13, 14, 23, 24, 43, 44, 53, 54: concave and convex fitting portion (13: central convex portion, 14: annular concave portion, 23: central concave portion, 24: annular convex portion, 43, 53: fitting convex portion, 44 ,
54 ... fitting recess)

Claims (5)

[Claims] 1. A resin block assembly formed by assembling a plurality of resin blocks made of a hollow and substantially rectangular parallelepiped injection-molded product, wherein each of the resin blocks includes a pair of opposing display walls and an adjacent resin. Each of the resin blocks is connected to a block and has a closed bag-shaped internal space defined by two pairs of connection walls facing each other. Each of the resin blocks is formed by an uneven fitting portion formed on each of the connection walls. A resin block assembly which is connected. 2. The resin block assembly according to claim 1, wherein each of said resin blocks is a combined product made hollow by combining a plurality of injection molded products. 3. The resin block assembly according to claim 1, wherein each of said resin blocks is a single piece made hollow by blow injection molding. 4. The resin block assembly according to claim 1, wherein each of the resin blocks has a vent hole that communicates the internal space with the outside. 5. The resin block according to claim 1, wherein at least one of a reinforcing agent for improving rigidity and a flame retardant for improving flame retardancy is added to the resin material. 5. The resin block assembly according to 3 or 4.