JP2006061502A - Bathtub - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To give a feeling of a supine posture without giving an unstable feeling of a lying posture in warm water in a bathtub for domestic or personal use. <P>SOLUTION: A backrest face 21 inclined at 130° to a horizontal plane (a horizontal bottom part 12) is formed at a part of an inner peripheral wall surface 20 of the bathtub 100. The unstable feeling of the lying posture in warm water is thereby suppressed while giving the feeling of the supine posture (a lying feeling) to a bathing person 200. Further, the bathtub 100 itself functions as a lying device in warm water to acquire the lying posture in warm water with the compact bathtub for personal use. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a bathtub, and more particularly, to a bathtub suitable for a sleeping bath posture.

2. Description of the Related Art Conventionally, in order to guide a body immersed in a bathtub to a more resting state, a sleeping water apparatus having a reclining structure is arranged in the bathtub.

This sleeping bath device tilts the backrest backward to obtain a relaxing state with the body in a sleeping position close to the supine position, but when the body is placed in the sleeping position in a hot water bath, The surface area that receives buoyancy increases and the body tends to float, making it difficult to maintain a stable sleeping posture.

And in order to maintain a sleeping bath posture against buoyancy, the limbs are stretched against the inner wall surface of the bathtub, etc., but when the limbs are in tension, the body can be relaxed. There wasn't.

In view of this, there has been proposed a hot water bath device that stabilizes the hot water posture by displacing the armrest, the footrest portion, and the footrest portion in conjunction with the change in the inclination angle of the backrest portion, and by hooking the foot on the footrest portion. (Patent Document 1).
JP-A-6-237873

However, conventionally, as the sleeping bath posture in the bathtub, what is the appropriate inclination angle of the backrest surface, that is, what is the inclination angle, gives a sense of supine position, It has not been clarified at what angle of inclination the sleeping bath posture becomes unstable.

In other words, the above-described conventional sleeping bath apparatus is merely set so that the backrest surface can swing within an appropriate tilt angle range, and allows the user to perform an operation of changing the tilt angle by trial and error. It was a thing.

In addition, although the above-described bed bath apparatus can be installed in a large commercial bath,
It cannot be installed in a compact personal bathtub generally used at home, and it is desired to obtain a sleeping bath posture in such a personal bathtub. In addition, as a personal bathtub, the length in a longitudinal direction is about 2 m at the maximum, for example.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a bathtub that is compact and can give a sense of supine position without giving an unstable feeling of sleeping bath posture. is there.

The bathtub of the present invention is stable while giving a sense of lying in the supine position (feeling of sleeping) by inclining a part of the inner peripheral wall surface at a predetermined inclination angle obtained by the inventors' experiment. A sleeping bath posture can be obtained.

That is, the bathtub according to the present invention is a bathtub provided with at least a bottom wall surface and an inner peripheral wall surface rising from an edge of the bottom wall surface, and a part of the inner peripheral wall surface is formed as a backrest surface,
The backrest surface is formed to be inclined with respect to the bottom wall surface within an angle range of 110 degrees to 150 degrees.

According to the experiment results of the present inventors, in a state where the backrest surface is inclined with respect to the bottom wall surface in an angle range of 110 degrees to 150 degrees, while giving the bather a sense of supine position, Moreover, it is possible to suppress instability in the sleeping bath posture.

In addition, since the inner peripheral wall surface of the bathtub is formed as the backrest surface described above, it is not necessary to provide the bed bath apparatus in the bathtub, the bathtub itself functions as the bed bath apparatus, and the bed bath is provided by a personal compact bathtub. You can get a posture.

The inclination angle of the backrest surface with respect to the bottom wall surface of the bathtub is particularly preferably about 130 degrees. This is because, according to the results of experiments by the present inventors, the sense of supine position and the sense of stability in the sleeping bath posture can be obtained in a most balanced manner at an inclination angle of approximately 130 degrees.

In the bathtub according to the present invention, the seat surface portion connected to the lower end edge of the backrest surface of the bottom wall surface,
It is preferable to be formed so as to be inclined obliquely upward from the lower end edge of the backrest surface.

This is because a V-shaped cross-sectional shape is obtained by the backrest surface and the seating surface portion, and the body's buttocks are easy to fit in the bent portion that is the bottom of the V-shape, so that a stable posture can be easily obtained.

In the bathtub according to the present invention, the inclination angle of the seat portion is 10 degrees to 20 degrees with respect to the horizontal plane.
It is preferable to set the angle range up to degrees.

According to the results of experiments by the present inventors, when the backrest surface is inclined with respect to the bottom wall surface within an angle range of 110 to 150 degrees, the inclination angle of the seating surface portion is within an angle range of 10 degrees or more. ,
Although it was possible to improve the stability of the sleeping bath posture, when the inclination angle exceeds 20 degrees, the angle of the body accommodating space between the backrest surface and the seating surface portion starts to narrow, and a tight feeling begins to occur. .

For this reason, it is preferable that the inclination angle of the seat surface portion is in an angle range of 10 degrees to 20 degrees in order to obtain a feeling of improving the stability of the sleeping bath posture without giving a feeling of cramping.

Moreover, in the bathtub which concerns on this invention, it is preferable that the front-end | tip of the seat surface part on the opposite side to the lower end edge of a backrest surface falls toward a bottom wall surface, and the level | step difference is formed.

According to the experiment results of the present inventors, it has been found that the sensation of the supine position can be obtained even in the lower limb posture in which the leg is bent at the knee joint, and according to the bathtub of the present invention, the thigh Is placed on the seating surface, the leg is bent at the knee joint, and the lower leg is in the lower limb position, hanging from the tip of the seating surface toward the bottom wall surface. The length in the longitudinal direction of the bathtub can be shortened, and the bathtub can be made more compact than when taking the lower limb posture with the entire part extended along the seating surface.

According to the bathtub according to the present invention, the backrest surface is inclined with respect to the bottom wall surface within an angle range of 110 to 150 degrees, so that the bather is given a feeling of supine position (feeling of sleeping). While
Moreover, it is possible to suppress instability in the sleeping bath posture.

In addition, since the inner peripheral wall surface of the bathtub is formed as the backrest surface described above, it is not necessary to provide the bed bath apparatus in the bathtub, the bathtub itself functions as the bed bath apparatus, and the bed bath is provided by a personal compact bathtub. You can get a posture.

Hereinafter, the best embodiment about the bathtub concerning the present invention is described with reference to drawings. 1 and 2 are views showing an embodiment of a bathtub according to the present invention, in which FIG. 1 (a) is a plan view, and FIG. 1 (b) represents a cross section taken along line AA in FIG. A cross-sectional view, FIG.
Sectional drawing showing the cross section along the BB line in (a), FIG.2 (b) is C in FIG.1 (a).
It is sectional drawing showing the cross section along line -C.

The illustrated bathtub 100 is, for example, a material made of synthetic resin or metal, which can be mass-produced by using a mold or the like, and is a compact bathtub mainly used for general household use.

The bathtub 100 includes a bottom wall surface 10 and an inner peripheral wall surface 2 that rises from the peripheral edge of the bottom wall surface 10.
0 and an outer edge portion 30 that spreads outward in the horizontal direction from the upper edge portion of the inner peripheral wall surface. As a specific size, in the plan view shown in FIG. Direction) is 1645m
m, the short side direction is 818 mm, and in the cross-sectional view shown in FIG.
It is.

A portion of the inner peripheral wall surface 20 substantially along one short side direction is formed as a backrest surface 21 on which the back of the bather 200 is placed, and the backrest surface 21 is substantially horizontal in the bottom wall surface 10. It is inclined with respect to the horizontal bottom 12 at an angle α. In the present embodiment, the inclination angle α is, for example, 130 degrees, but may be other inclination angles as long as the angle range is from 110 degrees to 150 degrees.

Further, the seat surface portion 11 connected to the lower end edge of the backrest surface 21 of the bottom wall surface 10 is formed to be inclined obliquely upward from the lower end edge of the backrest surface 21.

The inclination angle β of the seat surface portion 11 is, for example, 15 degrees with respect to the horizontal plane in the present embodiment, but may be another inclination angle. The angle range is preferably 10 to 20 degrees.

In addition, the connection part 11a which continues to the lower end edge of the backrest surface 21 of this seat surface part 11 is set to a position higher than the substantially horizontal horizontal bottom part 12 in the bottom wall surface 10, for example, its height is 86 m.
m. The length along the long side direction of the seat surface portion 11 is, for example, the bather 2 in the seat surface portion 11.
Since it is formed to be about 350 mm suitable for placing the thigh from the buttocks of 00, the front end portion 11b of the seat surface portion 11 (the front end portion on the side opposite to the connecting portion 11a on the lower end edge side of the backrest surface 21) ) And the horizontal bottom 12 are steps of about 180 mm in the height direction.

Further, the tip of the seat surface portion 11 is further lowered toward the horizontal bottom portion 12 of the bottom wall surface 10 to form a step.

Further, the side surfaces 22 and 22 of the inner peripheral wall surface 20 substantially along the long side direction are inclined at an angle γ (for example, 18 degrees) so as to be substantially parallel to the seat surface portion 11 from a position close to the backrest surface 21. Inclined and extended armrests 24, 24 on which the bather's arms are placed are formed.

Strictly speaking, the horizontal bottom portion 12 is provided with a slight downward slope that descends from the inner peripheral wall surface 23 facing the backrest surface 21 toward the seat surface portion 11. This downward slope is for draining hot water stored in the bathtub 100, and a drain port (not shown) is formed at the lowest position of the horizontal bottom 12.

  Next, the effect | action of the bathtub 100 which concerns on this embodiment is demonstrated.

In a state where the bather 200 enters the bathtub 100 filled with hot water (FIG. 1B), the buttocks and thighs of the bather 200 are placed on the seat surface portion 11, and the bather's 200 is placed on the backrest surface 21. When the back is drowned, since the backrest surface 21 and the seat surface portion 11 of the bathtub 100 have a substantially V-shaped cross-sectional shape, the bent portion (the backrest surface 21 and the seat surface portion 11 is the bottom of the V-shape). The buttocks of the bather 200 are accommodated by their own weight in the connecting portion), and the sleeping bath posture shown in FIG.

Here, the inventors experimented the relationship between the inclination angle α of the backrest surface 21 and the sense of supine position and the stability of the posture, and obtained the results shown in FIG.

That is, FIG. 3A shows “the ratio of the number of persons who obtained a sense of lying in the supine position (feeling of sleeping)” (□ point) according to “the inclination angle α of the backrest surface 21”, “ It is the experimental result which showed "the ratio of the number of people who felt a sense of stability in the posture (sleeping bath posture) at that time" (circle point).

According to this experimental result, the backrest surface 21 is 110 with respect to the bottom wall surface 10 (horizontal bottom portion 12).
In the state where it is inclined in the angle range from 150 degrees to 150 degrees, the bather 200 is given a sense of supine position while being in a sleeping bath posture regardless of the presence of buoyancy due to hot water stretched on the bathtub 100. It was found that a sense of stability can be obtained.

And the inclination | tilt angle (alpha) of the backrest surface 21 of the bathtub 100 of this embodiment is 110 degrees to 15 degrees.
Since it is 130 degrees that is within the range of 0 degrees, the bather 200 is given a sense of stability in the sleeping bath posture regardless of the presence of buoyancy due to hot water stretched on the bathtub 100 while giving a sense of supine position. be able to. In addition, the inclination angle α = 130 degrees can obtain the sense of the supine position and the sense of stability in the sleeping bath posture with the best balance in view of the experimental results shown in FIG.

Moreover, since the inner peripheral wall surface 20 of the bathtub 100 is formed as the backrest surface 21 described above, it is not necessary to provide a separate hot water bath apparatus in the bathtub, and the bathtub 100 itself functions as a hot water bath apparatus. In addition, a sleeping bath posture can be obtained by the compact bathtub 100 for personal use.

In addition, the above-described sleeping bath posture is substantially V formed by the backrest surface 21 and the seat surface portion 11.
Since the buttocks of the bather 200 are contained in the connecting portion 11a (bent portion) which is the bottom of the character cross-sectional shape, it is easy to obtain a stable posture.

Here, when the inclination | tilt angle (alpha) of the backrest surface 21 is 130 degree | times, these inventors are the seating surface part 11.
The relationship between the inclination angle β and the improvement in posture stability was tested, and the results shown in FIG. 3B were obtained.

That is, FIG. 3 (b) shows “inclination angle β of seat surface portion 11” according to
It is the experimental result which showed "the ratio of the number of people who felt the improvement in the stability of the sleeping bath posture".

According to the result of this experiment, in the state where the seat surface portion 11 is inclined within an angle range of 10 degrees or more, the sleeping bath posture is set regardless of the presence of buoyancy due to hot water stretched on the bathtub 100 with respect to the bather 200. It has been found that a significant improvement in stability can be provided. In addition, seat part 1
When the inclination angle β of 1 exceeds 20 degrees, the angle θ (= α−β) of the body accommodating space formed between the backrest surface 21 and the seating surface portion 11 becomes narrow, so that the posture stability is given. However, cramping begins to increase.

Therefore, it was found that the inclination angle β of the seating surface portion 11 is preferably in an angle range of 10 degrees to 20 degrees in accordance with the balance between the degree of improvement in posture stability and the degree of increase in tightness.

And since the inclination | tilt angle (beta) of the seat surface part 11 of the bathtub 100 of this embodiment is 15 degree | times which is in the range of 10 degree | times to 20 degree | times, without giving a cramping feeling to the bather 200, it goes to bed. A great sense of stability can be given to the hot water posture.

Further, the thigh of the bather 200 in the above-described sleeping bath posture is placed on the seat surface portion 11, but from the tip of the seat surface portion 11 (the tip portion on the side opposite to the portion that is continuous with the backrest surface 21). Since the tip falls toward the horizontal bottom portion 12 and a step is formed, the knee joint naturally bends due to the weight of the lower leg ahead of the knee joint, and the foot tip is horizontal. The leg part of the bather 200 is bent so as to come into contact with the bottom part 12.

Here, according to the results of experiments conducted by the present inventors, it has been found that even when the leg is in the lower limb posture bent at the knee joint, the sensation of the supine position can be obtained. Even in a hot water position, a supine position can be obtained.

And the length of the longitudinal direction inside the bathtub 100 can be shortened rather than the state which extended the leg part straightly because the leg part of the bather 200 is bent. That is, the wall surface 23 in the foot tip direction of the inner peripheral wall surface 20 can be formed closer to the foot tip.

In addition, it is preferable that the wall surface 23 in the foot-tip direction is closer to the vertical while ensuring a draft that allows the bathtub 100 to be removed from the production mold. This is because the extra space in the direction of the toes is expanded to avoid feeling cramped.

As described above in detail, according to the bathtub 100 according to this embodiment, the backrest surface 21.
Is inclined at 130 degrees with respect to the horizontal plane (horizontal bottom 12), so that it gives the bather 200 a feeling of lying in the supine position (feeling of sleeping) and also suppresses instability in the sleeping bath posture. Furthermore, since the bathtub 100 itself functions as a bed bath device, the bed bath posture can be obtained by the compact bathtub 100 for personal use.

In addition, the bathtub which concerns on this invention is not limited to the bathtub 100 which concerns on embodiment mentioned above, A various form can be taken in the range of the technical idea of this invention.

It is a figure which shows one Embodiment of the bathtub concerning this invention, (a) is a top view, (b) shows sectional drawing showing the cross section along the AA in (a), respectively. (A) is sectional drawing showing the cross section along the BB line in Fig.1 (a), (b) is sectional drawing showing the cross section along the CC line in Fig.1 (a). It is a graph which shows the experimental result about a bathtub, (a) is "the ratio of the number of people who got the feeling of supine position (feeling of sleeping)" in the sample person according to "the inclination angle of the backrest surface", The experimental results showing that “the ratio of the number of people who felt a sense of stability in the posture (sleeping bath posture) at that time”, (b) is the “sleeping angle” in the sample person according to the “inclination angle of the seat surface portion”. The experiment results showing the “percentage of people who felt improvement in the stability of the hot water posture” are shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Bottom wall surface 11 Seat surface part 11a Connecting part 11b Tip part 12 Horizontal bottom part 20 Inner peripheral wall surface 21 Backrest surface 22 Side surface 23 Wall surface 24 of an ankle direction 30 Armrest 30 Outer edge portion 100 Bathtub 200 Bathing person α Back surface inclination angle β Seat surface Inclination angle of part γ Inclination angle of armrest θ Angle of space where body fits

Claims (4)

In a bathtub provided with at least a bottom wall surface and an inner peripheral wall surface rising from the edge of the bottom wall surface,
A part of the inner peripheral wall surface is formed as a backrest surface, and the backrest surface is formed to be inclined with respect to the bottom wall surface in an angle range of 110 degrees to 150 degrees. 2. The bathtub according to claim 1, wherein a seat surface portion connected to a lower end edge of the backrest surface of the bottom wall surface is formed to be inclined obliquely upward from a lower end edge of the backrest surface. The bathtub according to claim 2, wherein an inclination angle of the seating surface portion is an angle range of 10 degrees to 20 degrees with respect to a horizontal plane. 4. The bathtub according to claim 2, wherein a step is formed by dropping toward the bottom wall surface from the tip of the seat surface portion opposite to the lower end edge of the backrest surface. .

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