JPH11346947A - Chair installed in bathtub - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair installed in a bathtub and having a novel structure, which is capable of selectively stabilizing the bathing posture of a person taking bath with his half body dipped in the water or with his full body dipped therein, in the bathing relating tools. SOLUTION: This chair installed in a bathtub is constructed in such a manner that a back plate part 2 is installed to the inner wall surface of the bathtub, a seat plate is provided in the lower side of the back plate part 2 by being developed roughly in a horizontal state along the bottom surface of the bathtub, a movable plate part 5 is pivotally mounted by being folded in a state roughly parallel to the back plate part 2, projecting piece parts 6 and 6 are provided in the left and right of the play end side of the movable plate 5, the pair of these projecting piece parts 6 and 6 are protruded in side directions to constitute armrest parts when the movable plate part 5 is roughly in parallel with the back plate part 2 to constitute armrest parts, and protruded downward to constitute front leg parts of the movable plate part 5 when the movable plate part 5 constitutes the seat plate in a roughly horizontal state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

SUMMARY OF THE INVENTION The present invention relates to a chair to be mounted in a bathtub of a general household, and a new type of chair which can support a posture of a bather in the bathtub in a seat-like or seat-chair-like manner. An object of the present invention is to provide a bathtub interior wearing chair having a structure.

[0002]

2. Description of the Related Art In recent years, the number of people who practice bathing for the purpose of health management has been increasing. For example, a bath with a bubble or jet flow generator has been adopted, or hot water or a bath with a shower has been used. The use of a sauna in the bathroom is performed. In particular, the sauna effect is extremely effective in enhancing body metabolism by promoting sweating throughout the body, so it is suitable for health care, and many people want to use it. In the bathroom sauna,
The installation of equipment to achieve the sauna function requires considerable expense, and the equipment has not been widely used because it is impossible to install the equipment in a limited space. In the case of a special-purpose machine, a room separate from a bathroom is required, and furthermore, it is more expensive, so that the diffusion rate to general households is extremely low at present.

[0003] As described above, under the current situation where it is difficult to introduce a sauna, which has been evaluated for its effect, into ordinary households, a bathing method comparable to the sauna effect has been proposed. In general, the conventional bathing method of immersing the whole body in a bathtub and bathing for a long time,
From a medical point of view, hot water and water pressure exert a heavy burden on the heart, so it cannot be said that it has a beneficial effect on health management. It has been instructed to bathe in hot water for an appropriate amount of time, so in order to obtain a sauna effect, soak the whole body in hot water and take a bath to encourage the sweating action. The bathing method is not recommended. A method of taking a bath as an exposed state above the hot water surface has been proposed.

[0004] In view of the above circumstances, the present invention has rapidly started the development and research of a chair that can be mounted in a bath tub that exposes the upper body from the surface of the bath so that it can be comfortably bathed, and has repeatedly repeated trial production and experiments. As a result, we have finally arrived here and have achieved a new purpose that is extremely easy to handle, such as being able to achieve its purpose, as well as being able to save space and use it for other purposes. Completed the bathtub interior wearing chair consisting of the structure and succeeded in putting it into practical use,
In the following, the configuration will be described in detail together with an embodiment representing the present invention shown in the drawings.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As will be clearly understood from the embodiment of the present invention shown in the drawings, the bathtub chair of the present invention basically has the following configuration. That is, a back plate with a mounting portion that can be mounted along the inner wall surface of the bathtub is provided.On the lower side of the back plate, a state substantially parallel to the back plate and a substantially horizontal state along the bottom surface of the bathtub are provided. A movable plate portion for a seat plate having a foldable structure that can be deployed between the two positions is pivotally mounted. A pair of armrests projecting sideways when they are substantially parallel to each other, and projecting downward when the movable plate portion for the seat plate is substantially horizontal to form a front leg portion of the movable plate portion for the seat plate. A bathtub interior wearing chair having a configuration in which a protruding rod portion is provided.

More specifically, a back plate is provided along the inner wall surface of the bathtub, and a mounting portion for mounting the upper edge of the bathtub is provided on the upper back surface of the back plate facing the inner wall of the bathtub. On the lower side of the back surface of the part is provided a stabilizing part for abutting on the inner wall surface of the bathtub, while on the lower side of the back plate part, a state substantially parallel to the back plate part,
A movable plate portion for a seat plate having a foldable structure that can be deployed between a substantially horizontal state along the bottom surface of the bathtub is pivotally mounted, and the seat plate is provided on the left and right sides of the free end side of the movable plate portion for the seat plate. In the state where the movable plate part is substantially parallel to the back plate part, it protrudes to the side to form an armrest,
When the movable plate portion for the seat plate is substantially horizontal, the structure is provided as a bathtub interior wearing chair provided with a pair of protruding rod portions which project downward and constitute the front leg portion of the movable plate portion for the seat plate. It can also be shown.

[0007] The back plate portion functions to support the back of the bather and also functions as a forming member for a mounting portion for hanging the chair of the present invention in the bath tub with the upper edge of the bath tub as a support portion. It is a shape that does not cause discomfort even if it touches the back, a flat plate of structure, a curved plate-like body or a lattice, a net-like or other structure,
On the upper surface of the back surface facing the inner wall surface of the bathtub, it is mounted on the upper edge of the bathtub (preferably provided with an engagement arm with an adjusting mechanism capable of coping with a change in the thickness of the upper edge.). The mounting portion thus formed is projected and formed, and below the mounting portion at an appropriate distance, the inclination angle of the back plate portion can be adjusted as necessary, or to eliminate the unevenness, for example, So that a stable part consisting of a suction cup and elastic projections is attached,
These stabilizing parts are in contact with the inner wall surface of the bathtub to stabilize the posture in the bathtub, and the integral inclination angle is adjusted to the bathing posture by manipulating the integrated rod to adjust the protrusion height. It can be very convenient to have a good angle.

The back plate is formed in a flat plate shape or a curved shape that is gently curved along the back. When the back plate portion is formed in a perforated plate shape to improve the flow of hot water from the back surface and to reduce the weight. It is extremely convenient and, as in the embodiment described later, is formed into a lattice-like structure composed of a plurality of vertical frames, and a movable plate portion to be folded on the side of the lattice is formed on the back side. By providing a vertical frame formed in an arrangement capable of being inserted between a plurality of vertical frames of the plate portion, when the movable plate portion is folded with respect to the back plate portion, a substantially back plate portion is formed. It can be made into a single plate that fits in the thickness, and it can be used in the bathing stage, such as a magnet or acupressure tool that is useful for improving health, or a jet jet nozzle or air delivery nozzle. Incorporates various parts and devices that are convenient when used together It can also be assumed.

The mounting portion is formed integrally with the back surface of the back plate itself, and is formed separately from the back plate portion. It is convenient to make it detachable by fitting or sliding, so that the upper and lower mounting positions can be changed and adjusted as appropriate according to the posture, height difference, sitting height, etc. of the bather. In addition to the hook-shaped engagement, it is of course possible to employ a suction cup that is adsorbed to the upper edge of the upper edge of the bathtub.
If necessary, a pillow portion for supporting the bather's head may be attached to the upper end of the back plate portion in an integrated structure or a known detachable structure as appropriate. .

On the other hand, the movable plate portion for the seat plate is attached and supported below the back plate portion and functions so that a bather can sit in a bathtub in an appropriate posture. In addition to the cantilever structure supported by the plate,
It may be provided with a front leg which is supported at the bottom of the bathtub at an appropriate position on the end opposite to the back plate support side,
As in an embodiment described later, when the movable plate portion for the seat plate is folded in a state substantially parallel to the back plate portion, the movable plate portion projects substantially horizontally toward the inside of the bathtub to form an armrest portion, and the movable plate portion for the seat plate is provided. When it is deployed in a substantially horizontal state and functions as a stool, a pair of protruding rods that protrude downward and become the front legs may be formed, and the The movable plate portion for the seat plate, the front leg portion or the protruding rod portion with respect to the movable plate portion for the seat plate are each pivotally connected in a structure that can be folded, and the provisionally attached state is stabilized in a predetermined posture. Between the members, a frictional portion, a meshing portion, or other known temporary attachment structure having an appropriate structure is interposed and formed, or a structure in which a temporary attachment metal for temporary fixing is combined is formed.

The movable plate portion for the seat plate, the protruding rod portion, and the like have not only a foldable structure, but also a telescopic structure that allows the length to be appropriately changed at the stage of performing each function. The height and length can be changed as appropriate according to the body shape and posture of the person. Starting with the movable plate portion for the seat plate, each member constituting the chair of the present invention up to the above is made of plastic material, stainless steel material, wood,
Alternatively, it is made as lightweight and small as possible by using a material composed of an appropriate combination of them, and it is difficult to grow rust and mold even when repeatedly used in water, and it can be easily washed even when it becomes dirty with descaling etc. Each member and combination structure should be formed in a carefully considered shape and structure so as to have a shape, or combination and disassembly structure.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall perspective view of a bathtub chair, FIG. 2 is a perspective view of a bathtub chair in which a movable part is folded, and FIG. The perspective view of the chair The side view of the bathtub chair in use in the half-body sauna state of FIG. 4 and the side view of the bathtub chair in use in the normal state of FIG. 5 are the most representative examples of the present invention. It has a configuration.

As shown in the overall perspective view of FIG. 1, the bathtub chair 1 of this case is provided with a back plate 2, and the back of the back plate 2 is attached to the inner wall surface of the bathtub. A structure is provided. This mounting structure includes upper mounting portions 3 and 3 provided on the rear upper side and right and left sides of the back plate portion 2, respectively.
Lower mounting parts 4, 4 respectively provided on the lower left and right sides of the back side
It has. One end of a movable plate 5 is pivotally attached to the lower end of the back plate 2.

The movable plate portion 5 is foldable in a state substantially parallel to the back plate portion 2 and is expanded to a state substantially perpendicular to the back plate portion 2 to constitute a seat plate. It is made to be able to. In addition, at the left and right portions on the free end side of the movable plate portion 5, there are provided armrests which project horizontally forward of the back plate portion 2 when the movable plate portion 5 is folded in a state substantially parallel to the back plate portion 2. In the state where the movable plate portion 5 constitutes the seat plate in a substantially horizontal state, the projecting pieces 6, 6 projecting downward and constituting the front legs of the seat plate are provided respectively.

The components of the above-described configuration will be described in detail.
The back plate portion 2 is provided with four vertical frame portions 7, 7,..., And the upper ends of the vertical frame portions 7, 7,. Have been. A headrest 9 which is detachably provided by a screw or the like (not shown) is mounted on an upper portion of the connection frame portion 8 formed in an arc shape, and the headrest 9 is inclined at a predetermined angle rearward. The lower end is provided with a flange 10 which is attached and detached by the screw, and the upper end is bent rearward.

A plurality of mounting holes 1 are formed along the vertical direction in the left and right portions of the vertical frame portions 7, 7,.
Are penetrated so as to penetrate from the front to the rear. Engagement hooks 14 constituting the upper mounting portion 3 are provided in the mounting holes 11, 11,. I have. The engaging hooks 14, 14 have mounting portions 12, 12 formed in an inverted L-shape, and one of the two sides bent at right angles is formed on the back surface of the left and right vertical frame portions 7, 7. To each other,
.. Are provided with through holes provided with, for example, female threads, and a plurality of decorative bolts 1 inserted from the surface side of the vertical frame portions 7, 7.
.. Can be coupled to the height position selected by the user.

Further, the other side of the two sides of the mounting portions 12, 12 has a rectangular cylindrical shape, and is substantially vertically erected on the back surface of the vertical frame portions 7, 7. The proximal ends of the engaging hooks 14 are inserted into the other side so as to be able to advance and retreat. The hooks 14, 14 are formed in a plate shape bent at right angles, and the base ends thereof are attached to the mounting portions 12, 1, respectively.
2 and decorative bolts 13 and 1 penetrating vertically
Are fixed in a penetrating state by 3,.

The engaging hooks 14, 14 of the upper mounting portion 3 are attached so as to form downward hooks, and the vertical frame portions 7, 7 are provided.
The upper edge 15 of the bathtub Y is held in a sandwiched shape as shown in FIG. 4 between the two, so that the upper edge 15 of a different type of bathtub Y can be mounted. The engaging hooks 14, 14 can move forward and backward within a predetermined range with respect to the mounting sections 12, 12, for example, the engaging hooks 14, 1.
4, a plurality of through holes (not shown) are formed along the longitudinal direction in plan view, and decorative bolts 13, 13 are inserted into the through holes, and the leading ends of the decorative bolts 13, 13 penetrate from the back side. By screwing nuts (not shown), both are set to a predetermined width and are connected.

In this manner, the engagement hooks 14, 14 are provided in the bathtub Y.
By engaging the outside of the upper edge 15 with the upper edge of the bathtub Y while preventing the upper portion of the backboard 2 from falling into the bathtub and applying the force applied to the backplate 2 by the load of the bather. 15, and not shown, but in some cases, the engaging hooks 14, 14
Can of course be replaced by a suction cup that is adsorbed on the upper end surface of the upper edge 15 of the bathtub Y.

At the lower left and right ends of the back plate 2, for example, suction cups 16 provided at the lower rear ends of the left and right vertical frames 7, 7 are provided.
16 are provided, and these suction cups 16 and 16 buffer and support the load applied when a person leans on the back plate 2, and the lower end of the back plate 2 has elasticity. By contacting the inner wall surface of the bathtub Y via the suction cups 16 having the property, it is possible to prevent the bathtub Y from being damaged,
The lower portion of the back plate portion 2 is fixed to the inner wall surface of the bathtub Y so that the posture of the chair 1 does not move left and right, while the length of the lower mounting portions 4, 4 with the suction cups 16, 16 is changed. By adjusting, the inclination angle of the back plate 2 with respect to the bathtub Y wall can be adjusted.

The base end of the movable plate 5 is pivotally mounted between the lower ends of the vertical frames 7, 7,... Of the back plate 2. The movable plate portion 5 has the same vertical frame portions 17, 17,... Inserted between the vertical frame portions 7, 7,.
The base end side is extended in a state penetrating the back side of the back plate portion 2, and is integrally connected to the back side of the back plate portion 2 by a pivot connection frame 18. The free ends of the vertical frame portions 17, 17,... Are integrally connected by a free end side connection frame 19 in front of the back plate portion 2. In the movable plate portion 5 configured as described above, the pivot 20 penetrating in the vicinity of the pivot-side connection frame 18 also passes through the lower end portions of the vertical frame portions 7, 7,... Both are rotatably connected to each other.

Notches 21 and 21 are formed in the free end side connection frame 19 at portions corresponding to the vertical frame portions 7 and 7 of the back plate portion 2, and when the movable plate portion 5 is folded, the vertical frame portions 7 and 7 are formed. 7, so that the vertical frame portions 7, 7,.
17, can be folded so that they form the same surface. The end of the movable plate portion 5 on the pivot side is joined to the inner wall of the bathtub Y so that the seat plate surface does not fall down when it is deployed at right angles to the back plate portion 2. Supporting pieces 22, 22 for holding are provided on the left and right.

The left and right end surfaces of the free end side connection frame 19 of the movable plate portion 5 are provided with projecting pieces 6 and 6, respectively. The side connection frame 19 is rotatably pivoted by a pivot 20 provided so as to penetrate from one end on the left and right sides to the other end, and can rotate in a range of about 90 degrees as shown in FIGS. 2 and 3. As a result, the protruding pieces 6, 6 can be folded in a state parallel to the back plate 2, as shown in FIG. 3, and the protruding pieces 6, 6 are each rectangular. It is formed in a tubular shape, and elastic members 23, 23 are inserted from the distal end side.

Further, a plurality of adjusting holes 24, 24,... Are formed in the protruding pieces 6, 6 along the longitudinal direction, and these adjusting holes 24, 24,. The side is a normal through-hole, and the back side forms a screw hole provided with a female screw. Elastic bodies 23, 2 inserted into protruding pieces 6, 6
3, an adjusting hole (not shown) is also formed, and the elastic bodies 23, 23 are moved forward and backward to a desired length, and decorative screws 25, 25 are inserted through the holes formed in the protruding pieces 6, 6, and the screws are inserted. By combining them, it can be fixed at the desired length,
It is possible to adjust the length when the protruding pieces 6, 6 are used as armrests, and to adjust the height when using the protruding pieces 6, 6 as front legs.

At the ends of the elastic members 23, 23, for example, rubber members 23a, 23a for preventing slipping are provided.
When it comes into contact with the bottom surface of the, it can serve to protect the tip from being damaged. As described above, the bathtub interior wearing chair 1 of the present invention constituted by this embodiment is the same as the one shown in FIG. 1, FIG. 2 and FIG.
It can be transformed into two forms.

[0026]

[Operation] In the case of using the bathtub interior wearing chair configured as described above, it can be used in the state shown in FIG. 4 or FIG. That is, in the use state shown in FIG.
The user can immerse the lower body in the bathtub and bring the upper body out of the bath surface U. Engagement hooks 14 serving as upper mounting portion 3 adapted to engage with upper edge 15 of bathtub Y
Is attached to an intermediate portion of the back plate portion 2, and the back plate portion 2
The movable plate portion 5 which is fixed to the inner wall of the bathtub Y in a state located slightly above the wall and is developed is maintained in a horizontal state substantially parallel to a position floating from the bottom surface of the bathtub Y by a predetermined height. 6 and 6 are set in a state of standing vertically on the bottom surface of the bathtub Y in a contracted state.

The movable plate portion 5 constituting the seat plate as described above is
The load on the front portion is received by the left and right projecting pieces 6, 6, and the rear load is transmitted to the wall surface of the bathtub Y by the engaging hooks 14, 14 of the upper mounting portion 3 and the suction cups 16, 16 being the lower mounting portion 4. So
It is possible to hold the weight of the user with sufficient rigidity without having the rear legs provided in the ordinary chair. In addition, by eliminating the rear legs and using the wall surface of the bathtub Y, it is possible to save space and allow a seated bather to have a margin in front of the bather. By immersing only the lower body in the bathtub in the above-mentioned state and putting the upper body on the bath, the burden on the heart etc. is reduced even by long bathing, and the sauna effect promotes sweating and promotes metabolism, etc. You will be able to take a good bath in terms of health.

On the other hand, in the use state shown in FIG. 5, the bather is immersed in the bathtub to the position of the shoulder in a normal state, and the body is supported using the armrests, without expecting the use by the above-mentioned sauna effect. In the bathtub Y
The engaging hooks 14, 14, which engage with the upper edge 15, are adjusted and mounted near the upper end of the back plate 2.
Is fixed to the inner wall of the bathtub Y in a state of being located lower than the case of FIG.

The movable plate 5 is folded substantially parallel to the back plate 2, the protruding pieces 6, 6 are erected in a horizontal state, and the elastic members 23, 23 are extended forward. Fixed. In the state where the movable plate portion 5 is folded in this way, the user can use the protruding pieces 6 and 6 as armrests in a state where the movable plate portion 5 is immersed in the shoulder, support the body, and enter the bathtub. In other words, in a normal bathing state, the bather can take a bath in an easy posture in which the body is prevented from shifting by the armrest, and in any use, the headrest 9 holds the bather's head. Bathing in a relaxed and supportive position is guaranteed.

The bathtub chair 1 which assists bathing in the two forms described above can be completely folded as shown in FIG. 3 when not in use, and can be completely folded when not in use. 5 is folded in a state parallel to the back plate portion 2, and the protruding pieces 6, 6 are turned upward to rotate the back plate portion 2.
The bathtub chair 1 can be in a fixed state, and all parts are folded along the inner wall surface of the bathtub Y to make a single-plate compact. It is possible to take a bath in a state almost the same as the bathtub Y not equipped with the chair.

[0031]

[Effects] As described above, the chair for wearing a bathtub interior according to the present invention has, first and foremost, a back plate portion provided along the inner wall of the bathtub.
By providing the movable plate portion in a foldable state with respect to the back plate portion, the movable plate portion can be folded during normal bathing, and when only the lower body is bathed in a bathtub, the movable plate portion is moved forward. It can be deployed to form a seat plate, so you can take a bath in a normal posture according to the wishes of the bather, or take a long bathing with the expectation of the sauna effect, or apply it to the heart like an old man It has to be appreciated that it has an excellent feature that allows the option of bathing in a posture without burden.

Moreover, the bathtub interior wearing chair included in the present invention is provided in a limited space called a bathtub.
Compatible with different types of bathtubs because it has a rational structure that uses the bathtub wall surface as part of the strength member, and has a width adjustment structure on the engaging hook that is attached to the bathtub wall surface Even if it is not necessary to use it to support the posture of the bather,
It can be suspended in a state of being along the bathtub wall as an extremely compact thin plate, and there is no concern that ordinary bathing will be hindered. Even if you take a bath with your back, you will also have the advantage that you can enjoy only the effect of improving the running of water to the back by interposing between the bathtub wall.

Particularly, in the embodiment shown in the drawings, the above-mentioned effects can be exerted uniformly, and furthermore, since the components of each part are extremely assembled and disassembled, manufacturing is possible. It is easy and convenient for packing, storage, transportation, exhibition, etc., and it is possible not only to provide it at low cost, but also to make it easier for buyers to handle. The feature that is obtained.

As described above, the bathtub interior wearing chair included in the present invention can surely achieve the intended purpose, is excellent in manufacturability and handleability, and is inexpensive and convenient. It can be provided as a rich bathing related equipment,
Elderly people and bathing not only enable bathing in a more relaxed atmosphere than before, but also enable bathing that leads to health management and health promotion in addition to rest. It is expected to be widely adopted and widely used not only as an aid for people who have difficulty maintaining posture at the time, but also as a useful tool for healthy people, including households and various facilities. You.

[Brief description of the drawings]

The drawings only show one embodiment of the bathtub interior wearing chair included in the present invention, which has the most typical configuration.

FIG. 1 is a perspective view of a chair for a bathtub included in the present invention.

FIG. 2 is a perspective view showing a state where a movable plate portion is folded.

FIG. 3 is a perspective view showing a state in which a protruding piece is further folded in FIG. 2;

FIG. 4 is a side view showing a state where the movable plate portion is developed and used as a seat plate.

FIG. 5 is a side view showing a state in which the folding protrusion is used as an armrest.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 bathtub chair 2 back plate 11 same mounting hole 3 upper mounting part 14 same engaging hook 4 lower mounting part 16 same sucker 5 seat plate movable plate part 17 same vertical frame part 18 same pivot side connecting frame 19 same Free end side connection frame 6 Protrusion piece 7 Vertical frame section of backboard section 8 Connection frame section of backboard section 9 Headrest 10 Flange section 12 Mounting section 13 Decorative bolt 20 Axis 21 Notch 22 Support frame 23 Telescopic body 24 Adjustment Hole 25 Screw Y Bath tub 15 Upper edge of bath tub U Hot water surface

Claims (5)

[Claims] 1. A back plate with a mounting portion which can be mounted along an inner wall surface of a bathtub, and a lower side of the back plate is substantially parallel to the back plate and along a bottom surface of the bathtub. A movable plate portion for a seat plate having a foldable structure that can be deployed between a substantially horizontal state is pivotally mounted, while the movable plate portion for the seat plate is provided on the left and right sides of the free end side of the movable plate portion for the seat plate. In a state substantially parallel to the back plate, the arm protrudes to the side to form an armrest, and when the movable plate for the seat plate is substantially horizontal, it protrudes downward to form a front leg of the movable plate for the seat plate. A bathtub interior wearing chair characterized by comprising a pair of protruding rod portions as described above. 2. A back plate portion mounted along the inner wall surface of the bathtub, and a mounting portion for mounting an upper edge of the bathtub is provided on an upper rear surface of the back plate portion facing the inner wall of the bathtub. On the lower side of the back surface, a stabilizing portion for abutting the inner wall surface of the bathtub is provided.On the lower side of the back plate portion, between a state substantially parallel to the back plate portion and a substantially horizontal state along the bottom surface of the bathtub. A movable plate portion for a seat plate having an expandable and foldable structure is pivotally mounted, while the movable plate portion for the seat plate is substantially parallel to the back plate portion on the left and right sides of the free end side of the movable plate portion for the seat plate. A pair of protruding rods that protrude sideways to form an armrest, and that project downward when the movable plate for the seat plate is substantially horizontal to form the front leg of the movable plate for the seat plate. A bathtub interior wearing chair characterized by being provided. 3. The mounting portion is formed in a detachable structure capable of changing the combination position in the vertical direction of the back surface of the back plate portion, and the engagement amount of the protrusion is adjustable according to the thickness of the upper edge of the bathtub. The bathtub interior wearing chair according to claim 1, wherein the arm is provided with the arm. 4. A back plate portion and a movable plate portion for a seat plate are both formed in a vertical lattice structure, and one of the lattice bars is fitted or meshed with a corresponding one of the other lattice bars and the notch. The bathtub interior wearing according to any one of claims 1 to 3, wherein, when the movable plate portion for the seat plate is folded, the back plate portion and the movable plate portion for the seat plate have a single plate-like structure. Chair. 5. The bathtub interior wearing chair according to claim 1, wherein the back plate portion is formed by integrally or detachably projecting a pillow piece directed obliquely rearward from an upper end thereof.