JPH07108268B2 - Wooden bathtub - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an improved wooden bathtub.

[Background technology]

Bathtubs are generally made of various materials such as wood, resin (FRP, etc.), metal (enameled, stainless steel, etc.). Among them, the wooden bathtub has been widely used in Japan since ancient times because of its excellent properties such as scent, elasticity, touch, and heat retention. However, the wooden bathtub has drawbacks peculiar to wood such as discoloration, stains, warpage and distortion, cracking, mold and rot, and durability. In particular, changes in Japanese lifestyles in the modern era have also changed the environment in which bathtubs are installed in homes, and ventilation in the bathroom is no longer sufficient, making wooden bathtubs less durable. Furthermore, in the present age where it is difficult to secure high-quality wood resources, wooden bathtubs are rarely used.

However, there are few resin and metal bathtubs that are used as alternatives to wooden bathtubs, as compared to the unique scent, elasticity, touch and heat retention of wood, and there is still a strong demand for wooden bathtubs. There is.

Therefore, as disclosed in Japanese Utility Model Publication No. 40-011911,
A bathtub has been proposed in which a resin-impregnated wooden thin plate is attached to the inner surface of a resin-impregnated wooden bathtub body. By impregnating the resin in this way, it is possible to avoid the various drawbacks of the wooden bath. However, since it has a two-layer structure consisting of a bathtub body and a thin plate, it is necessary to secure a certain thickness of the bathtub body in order to maintain the strength of the bathtub. Moreover, since the outer surface of the bathtub is made up of the bathtub body, it is necessary to use good quality wood considering its appearance. When using such high quality and thick wood, it is difficult to secure materials and the price of the bathtub becomes very expensive.

[Object of the Invention]

It is an object of the present invention to provide an inexpensive wooden bathtub which can eliminate defects such as discoloration, dirt, warpage, distortion, cracking, decay, and mold formation of wooden materials.

[Disclosure of Invention]

In the wooden bathtub of the present invention, at least the peripheral wall portion among the peripheral wall portion, the bottom surface portion, and the stile portion at the upper edge of the peripheral wall portion has a plurality of strip-shaped synthetic resin-impregnated plates juxtaposed on both sides of the base material and bonded. It is characterized by being configured.

As described above, according to the present invention, since the surface of the bathtub is composed of the plate impregnated with the synthetic resin, discoloration, dirt, warpage, distortion, cracking, decay and mold formation which are defects of wood materials such as peeling materials are generated. Can be prevented. Also, it has a three-layer structure in which boards with synthetic resin impregnation are provided on both sides of the base material, and the base material that is not exposed on the surface is made of an inexpensive member, and the adhesion board exposed on the surface is thin. It is sufficient to use, and since the attachment plate has a strip shape and its area is small, it is easy to secure good quality wood resources to be used for attachment plate.

Further, in another wooden bathtub of the present invention, at least the peripheral wall portion among the peripheral wall portion, the bottom surface portion and the stile portion of the peripheral wall portion upper edge,
Both sides of the base material are covered with a waterproof seal layer, and a plurality of strip-shaped synthetic resin-impregnated plates are arranged in parallel on both sides and bonded to each other.

As described above, according to the present invention, since the waterproof seal layers are formed on both surfaces of the base material, a wooden bathtub having excellent waterproofness can be obtained.

Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 and 2. That is, this wooden bath is composed of a peripheral wall portion 1, a bottom surface portion 2 and a stile portion 3 at the upper edge of the peripheral wall portion 1, and all of these constituent members are made of a wooden material impregnated with a synthetic resin.

The stile portion 3 is made of a highly durable wood material such as cypress, straw, firewood, etc. or a laminated wood material (parallel stitches, wood grain openings, etc.) impregnated with a synthetic resin, or a plywood or a lower plywood laminated material ( It is preferable to use an adhesive plate of the above-mentioned tree species adhered to the surface of a base material (preferably an aggregate of softwood) (in this case, only the adhesive plate may be previously impregnated with resin).

Further, as shown in FIG. 2, the peripheral wall portion 1 is formed by sticking a plurality of strip-shaped attaching plates 5 on both surfaces of a base material 4. As the attached plate 5, cypress, straw,
A water-repellent plate or grain having good water resistance such as firewood is used, and a synthetic resin is impregnated before or after attachment to the base material 4. The attached plate 5 to be used can be appropriately selected in terms of design and material cost. Plate 5
The appropriate thickness is 0.5 to 3 mm. As the base material 4, it is possible to use a water resistant plywood of a few plies in which a plurality of veneers are laminated and bonded with their fiber directions alternately orthogonal to each other, and this plywood is impregnated with an antiseptic / antifungal agent at the time of manufacture. Is preferred. Further, the surface of the substrate 4 is provided with a seal layer 6 for preventing water from entering. The seal layer 6 is formed by adhering a thin metal plate or a metal foil of aluminum, copper, stainless steel or the like on a plywood, or by welding a hot-melt type adhesive film, adhering a synthetic resin sheet, applying a paint, or the like. It is formed. Further, the adhesive that bonds the base material 4 and the attaching plate 5 may also serve as the seal layer 6.
In either case, it is preferable to use the seal layer 6 having excellent water resistance and heat resistance.

Further, instead of the water resistant plywood, peeling material, water resistant particle board, water resistant hard board, laminated board and the like may be used as the base material 4. In this case, the species of wood used is preferably coniferous wood. In addition to these wood-based materials, metal plates and plastic plates can also be used. Furthermore, organic foams and inorganic foams (for example, foam concrete) have excellent water resistance and moderate strength. If it has, it can be used as a base material. These surfaces are also treated with an antiseptic / antifungal agent, if necessary. Means such as surface coating and dipping are adopted for this treatment. In the case of synthesis, particle board, hard board, etc., antiseptic / antifungal agent treatment may be performed before or after molding.

A hot-melt type adhesive film or an ordinary wood adhesive can be used to bond the base material 4 and the board 5.
In particular, it is preferable to use a reactive adhesive such as epoxy resin, resorcinol, urethane resin, which has excellent water resistance and heat resistance. It is necessary to select an appropriate adhesive to be used depending on the type of resin impregnated in the attachment plate 5 and the type of resin forming the seal layer 6.

The bottom part 2 of the bathtub is the same as the stile part 3 described above, which is obtained by impregnating a plywood or a laminated wood of a tree species with a synthetic resin, or on the surface of a base material such as a plywood or a low-grade plywood laminated product, Similar to Part 1, antiseptic / antifungal treatment is performed, and after covering with a waterproof seal layer, a method of attaching a synthetic resin impregnated plate to the surface is available. Considering the design and cost, etc. And select it appropriately and process it to the specified size.

Examples of the synthetic resin with which these members are impregnated include commonly used resins such as polyester resins, acrylic resins, and urethane resins, and those having excellent water resistance, heat resistance, and weather resistance are particularly preferable. The amount of synthetic resin impregnated varies depending on the resin used, but it is the wood material 100 that is the impregnated material
It is preferably about 5 to 50 parts by weight with respect to parts by weight,
The surface hardness of the impregnated wood material is preferably 40 or less (Burcol hardness). If the amount of impregnation and the hardness are higher than this, the soft woody taste and texture of the woody material disappears, and the original feeling of wood texture is lost. On the other hand, when the impregnated amount and the hardness are smaller than this, the rot resistance and the water resistance are poor, and the warpage and the like are likely to occur. Further, it is appropriate that the water content of the resin-treated wood material is 70% or less.

The impregnation method of the synthetic resin is carried out by the atmospheric pressure dipping method, the reduced pressure injection method, the pressure injection method, or a combination of these methods, which have been widely used conventionally. After impregnation, the synthetic resin is completely cured by heating and drying.

Next, the procedure for assembling the wooden bathtub will be described with reference to FIGS. As shown in FIG. 3, the stile portion 3 is assembled by assembling four stile processed pieces 3a through which synthetic resin is impregnated.
A mortise 7 is provided on each inclined end face of 3d, and a razor 8 is fitted over each mortise 7, 7 of an adjacent work piece to form a square frame. In addition, dowel joints, full-scale joints, or the like may be used instead of such employment joints. In joining these, it is preferable to use jointly with an adhesive having excellent water resistance such as an epoxy resin adhesive.

As shown in FIG. 4, the peripheral wall portion 1 forms a wall material 9 by arranging a plurality of synthetic resin-impregnated plates 5 in parallel on both sides of a base material 4 on which a seal layer 6 is formed and sequentially adhering the same. Then, as shown in FIG. 5, fingers 10 are provided on both sides of the wall member 9, and the wall members 9, 9 are joined at right angles by finger joints. In this way, the rectangular frame-shaped peripheral wall portion 1 is obtained.
In addition, the stile portion 3 is provided on the upper end surface of the peripheral wall portion 1 over the entire circumference.
A dowel hole 11 for joining is formed.

As shown in FIG. 6, the bottom portion 2 has sealing layers 6'on both sides.
On the upper surface of the base material 4'formed with the above, a plurality of attaching plates 5'impregnated with a synthetic resin are arranged and attached. A dowel hole 12 is formed on the peripheral surface of the bottom surface portion 2 for joining the bottom surface portion 2 to the inner surface of the lower end of the peripheral wall portion 1.

Then, as shown in FIG. 7, the stile portion 3 is joined to the upper edge of the rectangular frame-shaped peripheral wall portion 1 by dowel joining, and further the bottom surface portion 2 is joined to the lower end inner surface of the circumferential wall portion 1 by dowel joining. .

When joining the stile 3, peripheral wall 1 and bottom 2 together, instead of the above-mentioned dowel joints, employable joining, joining with an adhesive, joining bolts and nuts by embedding nuts, etc. However, in order to obtain high bonding strength, it is preferable to use two or more of these bonding methods in combination.

As described above, in this embodiment, since the exposed surface portion of the bathtub is entirely resin-treated, discoloration due to contact with water and easiness of stain are improved, and dimensional change of each portion due to absorption of water is significantly reduced. As a result, the occurrence of warpage and misalignment is suppressed, and there is no risk of water leakage due to cracking, etc. compared to conventional wooden bathtubs.

In addition, plates 5 with synthetic resin impregnation are provided on both sides of the base material 3
The base material 4 which has a layered structure and which is not exposed to the surface may be made of an inexpensive material, and the attaching plate 5 exposed to the surface may be a thin plate, and the attaching plate 5 has a strip shape. However, the area is small, and it is easy to secure high-quality wood resources to be used for the board 5, and the cost can be reduced.

Further, the thin plate 5 having a small area is easily and sufficiently impregnated with the synthetic resin, and the waterproof property of the bathtub is improved.

Further, at least the surface of the peripheral wall 1 of the bathtub is constituted by a plurality of strip-shaped attachment plates 5, and a stripe pattern is formed at the joints between the attachment plates 5, providing a bathtub with a novel design image. it can.

Further, since the waterproof seal layers 6 are formed on both sides of the base material 4, a wood bathtub having a further excellent waterproof property can be obtained.

Also, the appropriate antiseptic and antifungal treatment makes the decay resistance significantly higher than that of the conventional wooden bathtub.

Furthermore, by setting the impregnated amount of the resin in the range of 5 to 50 parts by weight, there is no plastic feeling unlike conventional resin-treated products, the original wood texture of wood materials is retained, and heat retention is also impaired. Absent.

〔The invention's effect〕

According to this invention, since the surface of the bathtub is composed of a plate with a synthetic resin impregnated, it is possible to prevent discoloration, dirt, warpage, distortion, cracking, decay, mold generation and the like which are defects of wood materials such as peeling materials. You can Also, it has a three-layer structure in which synthetic resin-impregnated plates are provided on both sides of the base material, and the base material that is not exposed on the surface is made of an inexpensive member, and the adhesive board exposed on the surface is thin. What is necessary is to use only, and since the attachment plate has a strip shape and the area thereof is small, it is easy to secure good quality wood resources to be used for attachment plate, and the cost can be reduced. Further, the thin plate having a small area allows the synthetic resin to be easily and sufficiently impregnated, thereby improving the waterproof property of the bathtub. Further, at least the surface of the peripheral wall of the bath tub is composed of a plurality of strip-shaped attachment plates, and a striped pattern is formed at the joints between the attachment plates, so that a bathtub with a novel design image can be provided. Furthermore, since the waterproof seal layers are formed on both sides of the base material, there is an effect that a wood bathtub having a further excellent waterproof property can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a partially cutaway perspective view of a peripheral wall portion constituting a wooden bathtub, and FIG. 3 is an explanatory view showing assembly processing of a stile portion, FIG. FIG. 5 is an explanatory view showing the assembling processing of the peripheral wall portion, FIG. 6 is an explanatory view showing the assembling processing of the bottom portion, and FIG. 7 is a perspective view of the assembled wooden bathtub. 1 ... peripheral wall part, 2 ... bottom part, 3 ... stile part, 4 ...
Base material, 5 ...

Front page continued (72) Inventor Koji Okubo 1048, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd. (72) Kenki Nasu, 1048, Kadoma, Kadoma City, Osaka Prefecture (56) Reference, Matsushita Electric Works (56) References JP-A-59-171522 (JP, A) JP-B-40-11911 (JP, Y1)

Claims (2)

[Claims] 1. A peripheral wall portion, a bottom surface portion, and a stile portion at an upper edge of the peripheral wall portion, at least the peripheral wall portion is provided with a plurality of strip-shaped synthetic resin-impregnated plates juxtaposed on both sides of a base material and bonded to each other. A wooden bathtub characterized by being configured as. 2. A peripheral wall portion, a bottom surface portion, and a stile portion at an upper edge of the peripheral wall portion, at least the peripheral wall portion covers both surfaces of a base material with a waterproof seal layer, and further has a plurality of strip-shaped strips on both surfaces. A wooden bathtub, characterized in that boards with synthetic resin impregnation are arranged side by side and bonded together.