JPH0716165A - Structure for fixing side wall and bottom plate of wooden bathtub - Google Patents

Abstract

PURPOSE:To increase an adhesive area, to facilitate fixing of side walls and a bottom plate and to obviate water leakage by forming grooves at least either the step part of the inner periphery of the side walls and the outer periphery of the bottom plate. CONSTITUTION:The wooden bathtub 10 includes the side walls 12 and the bottom plate 14 which is mounted on the side wall 12. The bottom plate 14 is mounted on the side walls 12 by step parts 16 formed on the inside wall of the side walls 12. Second grooves 52 which correspond to the first grooves 50 disposed in the step parts 6 of the side walls 12 and have a triangular sectional shape are formed on the outer periphery of the bottom plate 14. Gaps 54 are formed in the bottom of the step parts 16, i.e., between the inside wall surfaces of the side walls 12 and the outer peripheral surface of the bottom plate 14 and a synthetic resin 56 is filled therein. The synthetic resin 56 which has excellent adhesiveness, water resistance and heat resistance and has elasticity when cured is more preferable. Consequently, the expansion and contraction of the bottom plate 14 are prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for fixing a side wall and a bottom plate of a wooden bathtub.

[0002]

2. Description of the Related Art Conventionally, there has been known a bathtub of a type in which hot water is stored and people enter therein. Such bathtubs were made of wood. Recently, stainless steel and plastic bathtubs have come into practical use. However, there is still a great demand for wooden bathtubs because of the good smell and texture of wood. On the other hand, wooden bathtubs have drawbacks such as difficulty in mass production.

Therefore, as a wooden bathtub that can be mass-produced,
A wooden bathtub as shown in FIG. 14 has been developed. Figure 15
FIG. 15 is a sectional view taken along line XV-XV in FIG. 14. The wooden bathtub 1 includes a side wall 2 and a bottom plate 3 attached to the side wall 2.
including. The side wall 2 is formed by using a plurality of unit materials 4.
On both end faces of the unit material 4, ridges and grooves extending in the longitudinal direction are alternately formed in the width direction. Then, the plurality of unit members 4, 4, ... Are joined at their end faces.
That is, the end faces of two adjacent unit materials are abutted so that the protrusions on the end face of one unit material and the groove of the other unit member engage with each other, and the adhesive is applied between the end faces. Therefore, the adjacent unit materials are adhered to each other with an adhesive, thereby forming the side wall 2.

At a certain position in the longitudinal direction of the plurality of unit members 4, 4, ... A step portion 5 is formed in the cross section. This step 5 is used to attach the bottom plate 3 to the side wall 2, so that the step 5 is oriented inward of the side wall 2.

The bottom plate 3 is disc-shaped when viewed from above. The bottom plate 3 is fitted into a step portion 5 formed on the inner peripheral surface of the side wall 2. Therefore, the width of the stepped portion 5 of the unit material 4 is formed so as to be substantially equal to the thickness of the bottom plate 3 and slightly larger. A gap 6 is formed between the bottom of the step portion 5, that is, the inner wall surface of the side wall 2 and the outer surface or outer peripheral surface of the bottom plate 3. A hole (not shown) communicating with the gap 6 is formed in the outer periphery of the side wall 2, and a synthetic resin such as a silicon resin having elasticity is injected through the hole to seal the gap 6 and fix the bottom plate 3. To do.

[0006]

However, in the conventional fixing structure of the side wall and the bottom plate of the wooden bathtub, the adhesion area between the side wall and the bottom plate and the synthetic resin is small. Therefore, the side wall and the bottom plate are not easily fixed to each other, and water may leak between the side wall and the bottom plate.

Therefore, an object of the present invention is to fix the side wall and the bottom plate of the wooden bathtub in which the adhesion area between the side wall and the bottom plate and the synthetic resin is large, the side wall and the bottom plate are easily fixed, and water leakage is eliminated. Is to provide the structure.

[0008]

According to the present invention, there is provided a side wall formed by joining adjacent end faces of a plurality of unit members, and a step portion formed on the inner wall at one end of the side wall in the length direction. A structure for fixing a side wall and a bottom plate of a wooden bathtub including a bottom plate whose end edge is fitted in the step part of the side wall and locked to the step part, wherein at least one of the step part on the inner periphery of the side wall and the outer periphery of the bottom plate. A groove is formed in the bottom wall, and the gap between the inner circumference of the side wall and the outer circumference of the bottom plate is filled with a synthetic resin together with the groove. The unit material includes an inside of the unit material formed of water-resistant wood and an outside of the unit material formed of a laminated material impregnated with a dimension stabilizing resin, and an inside of the side wall is formed by the inside of the unit material and the side wall. The exposed surface of is preferably formed by the exterior of the unit material.

[0009]

[Operation] In the gap between the inner circumference of the side wall and the outer circumference of the bottom plate,
Since the synthetic resin is filled together with the groove, the adhesion area between the side wall and the synthetic resin and between the bottom plate and the synthetic resin is large.

[0010]

According to the present invention, since the adhesion area between the side wall and the synthetic resin and the bottom plate and the synthetic resin is large, it is easy to fix the side wall and the bottom plate to each other in a wood bathtub manufactured by attaching the bottom plate to the side wall. Yes, water leakage is eliminated.

The above-mentioned objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of the embodiments with reference to the drawings.

[0012]

1 is a perspective view showing an example of a wooden bathtub as a background of the present invention, and FIG. 2 is a plan view thereof. 3 is a sectional view taken along line III-III in FIG. 1, and FIG. 4 is a sectional view taken along line IV-IV in FIG.

The wood bathtub 10 includes a side wall 12 and a bottom plate 14 attached to the side wall 12. The bottom plate 14 has a step portion 16 formed on the inner wall of the side wall 12 so that the side wall 1
It is attached to 2.

The side wall 12 includes a first unit material 18, a second unit material 20, a third unit material 22 and a fourth unit material 24. The convex portion 26 is formed on the first unit material 18.
Similarly, the convex portion 30 is formed on the second unit material 20. The third unit member 22 has a recess 34 and a finger-shaped portion 36. In addition, the fourth unit material 24,
The finger-shaped portion 38 is formed. The convex portions 26 and 30 are formed in a dovetail shape so as to reach from one end of the unit materials 18 and 20 to the other end. In addition, the concave portion 34,
The third unit material 22 is formed in a dovetail shape so as to reach from one end to the other end. The side wall 12 is made of unit materials 18, 20, 22
And 24 are formed by combining the convex portions 26 and 30, the concave portion 34, and the finger-shaped portions 36 and 38 and adhering them with an adhesive.

As shown in FIG. 3, the first unit material 18 is
A thin plate-shaped first unit member inside 18a formed therein
And a first unit material exterior 18b formed so as to cover the surface of the first unit material interior 18a. The first unit material outer portion 18b includes, for example, the first unit material outer member 42a,
It is formed by combining 42b, 42c, 42d and 42e. Further, the first unit material outer members 42a, 42b,
42c, 42d, and 42e are formed by combining a plurality of basic materials 18c, respectively, as described later.

First unit material outer members 42a and 42e
Are assembled so as to sandwich the first unit material inside 18a. Furthermore, the first unit material outer members 42a and 42
e between the first unit material outer members 42b, 42c and 4
2d is sandwiched in this order. First unit material outer member 42
b, 42c and 42d are located above the first unit material interior 18a, and the thickness of the first unit material interior 18a is the first
Is equal to the total thickness of the unit outer members 42b, 42c and 42d. Further, in this embodiment, the first unit material outer members 42a, 42b, 42c, 42d and 42e are formed to have substantially the same thickness.

First unit material outer member 42a, 42b, 42
The c, 42d, and 42e are formed to have a length that extends from one end to the other end of the first unit material 18 in the longitudinal direction. Further, the first unit material outer members 42a and 42e are formed to have a length that extends from one end of the first unit material 18 in the width direction to the other end.
The first unit material outer members 42b, 42c and 42d have the same length, and the first unit material outer members 42a and 42e.
It is formed to have a shorter length. The lengths of the first unit material outer members 42a and 42e are the same as the length of the first unit member inner portion 18a and the first unit material outer members 42b, 4e.
Equal to the sum of the lengths of 2c and 42d.

As shown in FIG. 4, the second unit material 20 is
A thin plate-shaped second unit member inside 20a formed therein
And a second unit material outside 20b formed so as to cover the surface of the second unit material inside 20a. The second unit material outside 20b includes, for example, the second unit material outer member 44a,
It is formed by combining 44b, 44c, 44d and 44e. In addition, the second unit material outer members 44a, 44b,
Each of 44c, 44d and 44e is formed by combining a plurality of basic materials 20c.

FIG. 5 is a perspective view showing the third unit material 22, and FIG. 6 is a sectional view taken along line VI-VI in FIG.
FIG. 7 is a sectional view taken along line VII-VII in FIG.
The third unit material 22 has a prismatic third unit material inside 22a formed therein, and a third unit material outside 22b formed so as to cover the surface of the third unit material inside 22a.
Including and The third unit material outside 22b is, for example, the third unit material outer member 46a, 46b, 46c, 46d and 4
It is formed by combining 6e. Also, the third unit material outer members 46a, 46b, 46c, 46d and 46e are
Each is formed by combining a plurality of basic materials 22c. Since the concave portion 34 and the finger-shaped portion 36 are formed in the third unit material 22, the concave portion 34 is formed in the third unit material inside 22a, and the third unit material inside 22a and the third unit material 22 are formed. A finger-shaped portion 36 is formed on the outer portion 22b of the material.

FIG. 8 is a perspective view showing the fourth unit material 24, and FIG. 9 is a sectional view taken along line IX-IX in FIG.
FIG. 10 is a sectional view taken along line XX in FIG. The fourth unit material 24 has a prismatic fourth unit material inside 24a formed therein, and a fourth unit material outside 24b formed so as to cover the surface of the fourth unit material inside 24a. Including and The fourth unit material outside 24b is formed by combining, for example, fourth unit material outer members 48a, 48b, 48c, 48d and 48e. Further, the fourth unit material outer member 4
Each of 8a, 48b, 48c, 48d and 48e is formed by combining a plurality of basic materials 24c. Fourth
Since the finger-shaped portion 38 is formed in the unit material 24 of No. 4, the fourth unit material inside 24a and the fourth unit material outside 2
A finger-shaped portion 38 is formed on 4b.

The insides of the unit materials 18a, 20a, 22a and 24a are made of ordinary wood. As the wood forming the unit material interiors 18a, 20a, 22a and 24a, water resistant and low cost wood is used, and for example, cedar is preferable. Unit material outside 18b, 2
Base materials 18c, 2 forming 0b, 22b and 24b
0c, 22c, and 24c are made of lumber such as cypress and palm, and are impregnated with a dimension stabilizing resin by a method described later.

As described above, the unit material exteriors 18b, 20b, 22b and 24b impregnated with the dimension stabilizing resin are
The exposed surface of the sidewall 12, that is, the outside of the sidewall 12,
Formed inside and on top. Further, inside the side wall 12, unit material interiors 18a, 20a, 22a and 24a are formed. Therefore, the unit material outside 18b, 20b,
2b and 24b are formed, and the unit material interiors 18a, 20a, 22a and 24a are formed at locations where hot and cold water does not contact.

Since the step portion 16 is formed on the inner wall of the side wall 12, the step portion 16 is formed on the unit materials 18, 20, 22 and 24. Since this step portion 16 is used to attach the bottom plate 14 to the side wall 12, the side wall 12
Directed inward. In addition, such a step portion 16 is
The unit materials 18, 20, 22 and 24 may be formed in advance as in this embodiment, and a plurality of unit materials 1 may be used.
After forming the side wall 12 by using 8, 20, 22, and 24, it may be continuously formed on the inner wall of the side wall 12.

The bottom plate 14 includes a bottom plate inside 14a formed therein, and bottom plate outsides 14b and 14c formed so as to cover the surface of the bottom plate inside 14a. The bottom plate outsides 14b and 14c are assembled so as to sandwich the bottom plate inside 14a. That is, the bottom plate outside 14b is formed at the bottom of the bottom plate inside 14a, and the bottom plate outside 14c is formed at the top of the bottom plate inside 14a. Bottom plate outside 14b
And 14c and the bottom plate inside 14a are formed in substantially the same shape. Further, the bottom plate outer portions 14b and 14c have substantially the same thickness, and the bottom plate inner portion 14a has the same thickness.
And 14c greater than the thickness.

The inside 14a of the bottom plate is made of ordinary wood. As the wood forming the bottom plate interior 14a, water resistant and low cost wood is used, like wood forming the unit material interiors 18a, 20a, 22a and 24a. For example, cedar is preferable. Bottom plate outside 14b
Similarly to the unit material exteriors 18b, 20b, 22b and 24b, and 14c are made of wood laminated materials such as cypress and palm, and are impregnated with a dimension stabilizing resin by a method described later.

As described above, the bottom plate exteriors 14b and 14c impregnated with the dimension stabilizing resin are formed on the exposed surface of the bottom plate 14, that is, the upper and lower parts of the bottom plate 12. The bottom plate interior 14a is formed inside the bottom plate.

FIG. 11A is a partial sectional view showing the side wall 12, and FIG. 11B is a partial sectional view showing the bottom plate 14. A second groove 52 having a triangular cross section corresponding to the first groove 50 having a triangular cross section provided on the step portion 16 of the side wall 12 is formed on the outer periphery of the bottom plate 14. In this embodiment, the first groove 50 and the second groove 52 are formed so as to have symmetrical shapes. Then, a drainage hole (not shown) for drainage is formed in principle at a suitable position slightly inward from the outer peripheral edge of the bottom plate 14.

Then, the bottom of the step portion 16, that is, the side wall 1
A gap 54 is formed between the inner wall surface of No. 2 and the outer surface or outer peripheral surface of the bottom plate 14. And this gap 54
Then, the synthetic resin 56 is injected and filled. As the synthetic resin 56, a resin having excellent adhesiveness, water resistance, and heat resistance is preferable, and, for example, a silicone resin is used. Further, as the synthetic resin 56, it is preferable that the synthetic resin 56 is a liquid having a viscosity when injected and is elastic when cured. This is because the bottom plate 14 may expand or contract due to the water being absorbed by the bottom plate 14 or the water evaporating, and the expansion and contraction of the bottom plate 14 is not prevented by the synthetic resin 56. Then, when the injected synthetic resin 56 is cured, the side wall 12 and the bottom plate 14 are bonded to each other.

In this embodiment, as shown in FIG. 3 and the like, the case where the synthetic resin 56 is poured into the above-mentioned gap 54 from the bottom side of the side wall 12 is shown. this is,
This is because the bottom plate 14 is covered with the step portion 16 on the side wall 12 from below, and the synthetic resin 56 filled from below does not protrude to the upper part of the bottom plate 14. However, in some cases, it may be considered that the step portion 16 formed on the side wall 12 is turned upside down and the synthetic resin 56 is poured into the gap 54 from above.

When forming the arcuate portion of the side wall 12, as shown in FIG. 12, a hollow cylinder 58, which is an assembly of the fourth unit members 24 having the finger-shaped portions 38, is formed. Then, the hollow cylinder 58 is cut into a quarter to form an arc-shaped portion of the side wall 12.

The unit materials outside 18b, 20b, 22b
And basic materials 18c, 20c, 22c forming 24b
And 24c, the grain direction is horizontal. In addition, the exposed surfaces of the base materials 18c, 20c, 22c and 24c and the bottom plate exteriors 14b and 14c are sharp, and the surfaces where they are bonded to each other are the squares. The swelling rate of wood is higher in wood than in wood. For example, the swelling rate per 1% water content of the cypress is 0.12% for grain and 0.23% for grain. Therefore, the base materials 18c, 20c, 22c and 24c and the bottom plate outside 14b
By making the exposed surfaces of 14c and 14c clear, it is possible to reduce the adverse effects of the expansion and contraction of the dimensions of the wooden bathtub 10.

As described above, the unit material exteriors 18b, 20
base materials 18c, 20 forming b, 22b and 24b
c, 22c and 24c and bottom plate outside 14b and 14c
Is made of a laminated wood material such as cypress or twig, and is impregnated with a dimension stabilizing resin. Next, the unit material outside 18b,
Basic materials 18c, 20 forming 20b, 22b, 24b
c, 22c and 24c and bottom plate outside 14b and 14c
An example of a method of impregnating the and the dimensionally-stabilized resin will be described.

Each of the basic materials 18c, 20c, 2 of the laminated material constituting the unit material exterior parts 18b, 20b, 22b and 24b
2c and 24c and the bottom plate outsides 14b and 14c are put in a pressurizing and depressurizing injection can and depressurized to 30 mmHg or less for 1 hour. Thereafter, the dimensionally stabilized resin to which the catalyst solution has been added is introduced into the can.

A urea-formaldehyde-glyoxal precondensate is used as the dimension stabilizing resin. Its chemical structure is shown in Chemical formula 1.

[0035]

[Chemical 1]

After the dimension stabilizing resin is introduced into the can, 1
The pressure is applied for 10 hours / kg ² and the injection is completed. After that, the temperature inside the can is sequentially raised, and finally to 140 ° C., and the hardening of the dimension stabilizing resin is completed in 2 hours.

According to this embodiment, the side wall 12 and the synthetic resin 56 and the bottom plate 14 and the synthetic resin 56 have a large adhesive area, so that the side wall 12 and the bottom plate 14 can be easily fixed to each other and water leakage can be eliminated. . In addition, the wooden bathtub 10 includes the unit material outsides 18b, 20b, 22b and 24b and the bottom plate outside 1
Dimension-stabilizing resin is impregnated into 4b and 14c, and the unit material interiors 18a, 20a, 22a and 24a and the bottom interior 14a are made of water-resistant wood. The expansion and contraction of is small.
Further, the unit material interiors 18a, 20a, 22a and 24
Since the a and the bottom surface inside 14a are not impregnated with the dimension stabilizing resin and it is not necessary to use the laminated wood, the wooden bath 10 can be manufactured at a relatively low cost.

FIG. 13 shows another embodiment of the present invention,
(A) is a partial sectional view showing the side wall 12, and (B) is a partial sectional view showing the bottom plate 14. In this embodiment, the first groove 50 of the side wall 12 and the second groove 52 of the bottom plate 14 are formed to have a plurality of triangular cross sections.

FIG. 14 shows still another embodiment of the present invention, (A) is a partial sectional view showing the side wall 12, (B).
FIG. 4 is a partial cross-sectional view showing the bottom plate 14. In this example,
The first groove 50 of the side wall 12 and the second groove 52 of the bottom plate 14
Is formed to have, for example, two semicircular cross sections. In the embodiment of FIG. 13 and the embodiment of FIG. 14 as well, the first groove 50 of the side wall 12 and the second groove 52 of the bottom plate 14 are symmetrical in cross-sectional shape.

In the above embodiment, a silicon resin is used as the synthetic resin 38. However, urethane type,
Epoxy or polyester resins may be used.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a sectional view taken along the line III-III in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a perspective view showing a third unit material.

6 is a cross-sectional view taken along line VI-VI in FIG.

7 is a cross-sectional view taken along the line VII-VII in FIG.

FIG. 8 is a perspective view showing a fourth unit material.

9 is a sectional view taken along line IX-IX in FIG.

10 is a cross-sectional view taken along the line XX of FIG.

FIG. 11A is a partial cross-sectional view showing a side wall,
(B) is a partial cross-sectional view showing the bottom plate.

FIG. 12 is a perspective view showing a hollow cylinder which is an assembly of fourth unit materials.

13A and 13B show another embodiment of the present invention, wherein FIG. 13A is a partial sectional view showing a side wall, and FIG. 13B is a partial sectional view showing a bottom plate.

FIG. 14 shows still another embodiment of the present invention, (A)
Is a partial cross-sectional view showing a side wall, and (B) is a partial cross-sectional view showing a bottom plate.

FIG. 15 is a plan view showing an example of a conventional wooden bathtub which is the background of the present invention.

16 is a cross-sectional view taken along line XVI-XVI in FIG.

[Explanation of symbols]

 10 Wooden Bathtub 12 Side Wall 14 Bottom Plate 14a Bottom Plate Inside 14b, 14c Bottom Plate Outside 16 Stepped Part 18 First Unit Material 18a First Unit Material Inside 18b First Unit Material Outside 20 Second Unit Material 20a Second Unit Material Inside 20b Second unit material Outside 22 Third unit material 22a Third unit material Inside 22b Third unit material Outside 24 Fourth unit material 24a Fourth unit material Inside 24b Fourth unit material Outside

Claims (2)

[Claims] 1. A side wall formed by joining adjacent end faces of a plurality of unit members, a step portion formed on an inner wall of the side wall at one end in the length direction, and an edge thereof being a step of the side wall. A structure for fixing a side wall and a bottom plate of a wooden bathtub including a bottom plate that is fitted into a portion and locked to the step portion, wherein a groove is formed in at least one of the step portion on the inner periphery of the side wall and the outer periphery of the bottom plate. The gap between the inner circumference of the side wall and the outer circumference of the bottom plate is
A fixing structure for a side wall and a bottom plate of a wooden bath, which is filled with a synthetic resin together with the groove. 2. The unit material includes an inside of the unit material formed of water-resistant wood and an outside of the unit material formed of a laminated material impregnated with a dimension stabilizing resin, and an inside of the side wall includes the unit unit. Formed by the inside of the material,
2. The fixing structure for a side wall and a bottom plate of a wood tub according to claim 1, wherein the exposed surface of the side wall is formed by the outside of the unit material.