JPH0432246Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is applicable to outdoor installations, such as parks, playgrounds,
Concerning cocrete benches, tables, fences, slides, stairs, etc. installed on streets.

Conventional technology and its problems Conventionally, outdoor equipment installed in parks, playgrounds, etc., such as wooden benches and tables, are prone to decay, lack durability, and require time and effort to maintain, so concrete benches have been used. , tables, etc., but concrete is cold and easily dirty, and its surface is prone to cracking and weathering. In particular, in hot spring areas, the surface deteriorates significantly due to the acidic atmosphere, and in cold regions, water absorption, freezing and thawing repeatedly causes cracks to form and expand, and the reinforcing bars exposed through these cracks to rust and lead to destruction. There are also many. In addition, the weathering mentioned above may stain clothes or cause injuries to children when they collide with it, so it is not a suitable material for benches and the like. For this reason, for example, attempts have been made to glue and integrate wood onto the surface of concrete outdoor installations, but due to the difference in expansion and contraction rates between concrete and wood, the wood tends to crack and peel, making it difficult to put it into practical use. was difficult.

Means for Solving the Problems In order to solve the above-mentioned problems, the outdoor installation according to the present invention chemically modifies and treats the hydroxyl group of the wood component with a reactant on at least the upper surface of the concrete outdoor installation main body. It is made of chemically treated wood and is integrated with adhesive.

Therefore, according to the present invention, the surface, at least the top surface, of the main body of the concrete outdoor installation is covered with chemically treated wood obtained by chemically modifying and treating the hydroxyl groups of wood components with a reactant. become. The above chemically treated wood maintains the original appearance, porosity, and thermal conductivity of wood, while improving its antiseptic properties, insect repellency, and dimensional stability.It takes advantage of the strengths of both concrete and wood, and is durable. This will improve performance, usability, safety, and aesthetics.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings of FIGS. 1 and 2.

As shown in FIG. 1, the outdoor installation according to the first embodiment has acetylated wood 2, which is chemically treated wood, attached to a bench 1 made of cocrete, which is the main body of the outdoor installation, with an adhesive 3. It is integrated.

That is, the Cocrete bench 1 is made by integrally forming a pair of legs 1b, 1b and a seat part 1a, and acetylated wood 2 is integrally attached to the top and side surfaces of the seat part 1a via an adhesive 3. has been made into

Acetylated wood 2 has a specific gravity of 0.4 to 0.8, maintains almost the same appearance, porosity, and thermal conductivity as untreated wood, has a preservative efficacy value (JISA9302) of 0.95 or higher, and is effective against termites. Value (Japan Wood Preservation Association Standard No. 11 1981)
If you use a material with a thickness of 0.9 or higher and a thickness of 9.0 to 30.0 mm,
It prevents the cold sensation of concrete, providing a buffering effect in the event of a collision, and also prevents frost damage due to its heat insulating effect. This acetylated wood 2 changes from a completely dry state to an absorbed state (saturated moisture content
120%~130%) when the expansion rate is 0.1%~0.5
%, but this value is 1/30 to 1/40 of that of untreated wood, so even if it is attached to concrete, the difference in expansion and contraction rate due to water absorption and moisture absorption is small, so it will not peel off. Therefore, long-term adhesive integration can be expected.

As the adhesive 3, for example, epoxy resin, urethane resin, acrylic resin, etc., which have excellent adhesion to both wood and concrete, are used.

Therefore, according to this embodiment, since the outdoor installation main body 1 is made of concrete, it has excellent load resistance and durability.
is covered with acetylated wood 2, so by using the grain of acetylated wood decoratively,
There is an advantage that a bench with a design suitable for a natural environment such as a park can be obtained.

As shown in FIG. 2, the second embodiment is different from the above-described first embodiment in that the seat 1a and the pair of legs 1b, 1b are integrally formed to constitute the outdoor installation main body 1. On the other hand, the outdoor installation main body 1 is constructed by placing and fixing a concrete seat part 1a treated with imitation wood on a pair of legs 1b, 1b. Acetylated wood 2 is integrally attached to the upper surface of the seat portion 1a via an adhesive 3.

The rest is the same as the previous embodiment, so the explanation will be omitted.

Therefore, according to this embodiment, since the seat portion 1a is treated with imitation wood, it is possible to obtain a bench with a design that has a more natural texture than the first embodiment. be.

Note that the outdoor installation main body is not limited to a bench, but may be a cylindrical chair, a table, a slide, a fence, a staircase, or the like.

Further, the outdoor installation main body is not limited to being made of concrete alone, but may of course be made of plastic or metal in combination.

Effects of the invention As is clear from the above explanation, according to the invention, the outdoor installation body made of concrete covered with chemically treated wood such as acetylated wood receives external loads, so it has excellent durability. At the same time, chemically treated wood maintains the original appearance, porosity, and thermal conductivity of wood, eliminating the cold sensation of concrete and providing a good tactile sensation. It works well and is perfect even for young children.

In addition, the surface of the outdoor installation unit is covered with chemically treated wood, giving it acid resistance and insulation properties, which prevents surface deterioration due to acidic atmospheres and cracks due to freezing in winter, and increases durability. Improve even further.

In addition, chemically treated wood has excellent dimensional stability, so even if chemically treated wood is attached to the surface of a concrete outdoor installation, the difference in expansion and contraction between the two is small, so there is no large internal stress. Hard to occur. Therefore, delamination, cracking, and warping are less likely to occur, and the product can be installed outdoors for a long period of time.

[Brief explanation of the drawing]

1 and 2 show embodiments of the present invention, with FIG. 1 being a sectional view of the first embodiment, and FIG. 2 being a perspective view of the second embodiment. 1... Outdoor installation main body (bench), 2... Chemically treated wood (acetylated wood).

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Chemically treated wood, which is obtained by chemically modifying and treating the hydroxyl groups of wood components with a reactant, is attached and integrated on at least the upper surface of the main body of a concrete outdoor installation. An outdoor installation characterized by: (2) The outdoor installation according to claim 1, wherein the chemically treated wood is macetylated wood.