JP7424716B2 - bathtub - Google Patents

Description

The present invention relates to a bathtub.

Bathtubs with various structures have been proposed to be placed in bathrooms, and for example, Patent Document 1 discloses the following bathtub. This bathtub includes a bathtub body having a bottom wall, a rectangular cylindrical side wall rising from the periphery of the bottom wall, a frame-shaped flange extending outward from the top end of the side wall, and a top plate disposed on the top of the flange. It is equipped with a member.

Utility Model Publication No. 4-46890

By the way, in the bathtub mentioned above, the flange part of the bathtub body and the top plate member are fixed with bolts, but since there is often no space between the bathtub body or flange part and the bathroom wall, it is difficult to hold hands when working. It was difficult to insert and assembly work was not easy. The present invention has been made to solve the above problems, and an object of the present invention is to provide a bathtub in which the bathtub body and the top plate member can be easily assembled.

The present invention relates to a bathtub disposed in a bathroom, which includes a bathtub body having a bottom wall, a sidewall that stands up from the periphery of the sidewall, and a flange that extends outward from the upper edge of the sidewall. , a top plate member formed in a frame shape so as to cover the flange portion, and a connection mechanism that connects the bathtub body and the top plate member, the connection mechanism including the flange portion and the top plate member. at least one protruding member formed on either one of the flange portion and the top plate member, and at least one receiving portion for receiving each of the protruding members, each of the receiving portions A mounting hole is formed in which the protruding member is press-fitted.

In the above bathtub, either the protruding member or the receiving portion can be supported so as to be movable in a substantially horizontal direction.

In the bathtub, each of the protruding members may be formed such that the diameter thereof decreases toward the tip.

In the above bathtub, the tip of each of the protruding members can be formed into a hemispherical shape.

In the above bathtub, the inner wall surface of the attachment hole may be formed with a tapered surface whose diameter decreases in the direction in which the protrusion member enters.

In the above bathtub, the top plate member can be formed to have a larger width than the flange portion.

According to the present invention, the bathtub body and the top plate member can be easily assembled.

1 is a perspective view showing an embodiment of a bathtub according to the present invention. FIG. 2 is a perspective view of a bathtub body in the bathtub of FIG. 1. FIG. 3 is a sectional view taken along line AA in FIG. 2. FIG. FIG. 2 is a perspective view of a top plate member in the bathtub of FIG. 1. FIG. 2 is a sectional view taken along line BB in FIG. 1. FIG. FIG. 2 is a sectional view taken along the line CC in FIG. 1. 2 is a sectional view taken along line DD in FIG. 1. FIG. FIG. 2 is an enlarged view of a connecting portion between a second long side and a short side in the bathtub of FIG. 1; 9 is a sectional view taken along line EE in FIG. 8. FIG. It is a sectional view of a connection structure. It is a sectional view showing assembly of a bathtub main body and a top plate member by a connection structure. FIG. 3 is a cross-sectional view showing a state in which the bathtub body and the top plate member are fixed by the connection structure. It is a sectional view showing other examples of a connection structure. It is a sectional view showing other examples of a connection structure.

EMBODIMENT OF THE INVENTION Hereinafter, one embodiment of the bathtub according to the present invention will be described with reference to the drawings.

<1. Overview of the bathtub>
FIG. 1 is a perspective view of a bathtub according to this embodiment. As shown in FIG. 1, the bathtub according to the present embodiment is placed in a bathroom, and includes a bathtub body 1, a frame-shaped top plate member 2 that covers the top surface of the bathtub body 1, and an apron that covers the sides of the bathtub body 1. A member 3 is provided. However, FIG. 1 shows a diagram with the plate-shaped apron member 3 removed. Although the materials constituting these parts are not particularly limited, for example, the bathtub body 1 can be formed of FRP, an artificial marble molded product, or the like. On the other hand, the top plate member 2 can be made of, for example, a resin material such as a foam material. Moreover, the apron member 3 can be formed from a resin material. These will be explained in detail below.

<1-1. Bathtub body＞
FIG. 2 is a perspective view of the bathtub body, and FIG. 3 is a sectional view taken along line AA in FIG. 2. As shown in FIG. 2, the bathtub body 1 includes a rectangular bottom wall 11 and a rectangular cylindrical side wall 12 rising from the periphery of the bottom wall 11, which creates a space in which hot water is stored. is formed. To explain in more detail, the bottom wall portion 11 is formed in a rectangular shape having a pair of long sides and a pair of short sides, of which one long side and one pair of short sides are approximately the same as the bathroom. It is constructed along the wall surface 5, and the other long side faces the washing area. Correspondingly, the side wall portion 12 includes a pair of long wall portions (first wall portions) 121 and 122 rising from the long sides of the bottom wall portion 11 and a pair of short wall portions (second wall portions) rising from the short sides. It is constructed by combining 123 and 124. Here, of the long walls 121 and 122 of the side wall 12, the one facing the washing area will be referred to as the first long wall 121, and the opposite side will be referred to as the second long wall 122. Therefore, among the side wall parts, both the short wall parts 123 and 124 and the second long wall part 122 are arranged so as to face the wall surface 5 of the washing area.

In the side wall portion 12, a protrusion portion 18 is formed at a connecting portion between the long wall portions 121, 122 and the short wall portions 123, 124, which extends in the vertical direction and projects toward the space side of the bathtub body 1. The protruding portion 18 forms a smooth surface that protrudes in an arc shape between the long wall portions 121, 122 and the short wall portions 123, 124. Further, a flange portion 13 extending horizontally outward is formed on the upper end edge of the side wall portion 12, and an edge portion 14 extending downward is formed on the outer peripheral edge of the flange portion 13. Therefore, the flange portion 13 and the edge portion 14 are formed into a frame shape that is rectangular in plan view so as to correspond to the side wall portion 12 .

As shown in FIG. 2, the connecting portion between the flange portion 13 and the side wall portion 12 is formed in a smooth arc shape. Furthermore, circular attachment holes 15 (see FIG. 10) are formed at a plurality of locations in the flange portion 13, and these attachment holes 15 are used for fixing to the top plate member 2, which will be described later. Three sides of the edge portion 14 face the wall surface 5 of the bathroom together with the side wall portion 12, but a gap is formed between them and the wall surface 5. This point will be discussed later.

<1-2. Top plate components>
Next, the top plate member will be explained with reference to FIGS. 4 to 7. 4 is a perspective view of the top plate member, FIG. 5 is a sectional view taken along line BB in FIG. 1, FIG. 6 is a sectional view taken along line CC in FIG. 1, and FIG. 7 is a sectional view taken along line DD in FIG. .

As shown in FIG. 4, the top plate member 2 is a member disposed on the flange portion 13 of the bathtub body 1, and is formed in the shape of a rectangular frame in plan view. More specifically, by combining a pair of long sides 21, 22 corresponding to the long walls 121, 122 of the bathtub body 1, and a pair of short sides 23, 24 corresponding to the short walls 123, 124, It is configured. The long sides 21 and 22 and the short sides 23 and 24 are each formed into a rectangular parallelepiped shape, and can be formed by extrusion molding, for example. Furthermore, short sides 23 and 24 are fixed at both ends of the long sides 21 and 22 so as to connect the opposing inner wall surfaces. Hereinafter, of the two long sides 21 and 22, the long side facing the washing area will be referred to as the first long side 21, and the opposite side will be referred to as the second long side 22.

<1-2-1. Long side>
Next, the first long side portion 21 will be explained. As shown in FIG. 5, the first long side portion 21 includes an upper surface 211, an inner wall surface 212 facing the inside of the bathtub, an outer wall surface 213 facing the outside of the bathtub, a lower surface 214, and a pair of side wall surfaces 215 at both longitudinal ends. It has a rectangular parallelepiped shape as a whole.

In particular, the first long side part 21 largely protrudes from the flange part 13 toward the washing area side, and the lower surface 214 of the first long side part 21 has a protruding surface 2141 extending horizontally from the outside toward the inside, and a flange A contact surface 2142 that contacts the portion 13 and a lower end surface 2143 that connects to the inner wall surface 212 are formed in this order. The protruding surface 2141 is a surface protruding from the flange portion 13 toward the washing area, and has a groove 216 extending in the longitudinal direction formed therein. A plate-shaped apron member 3 extending downward is fitted into this groove 216. This apron member 3 covers the first long wall portion 121 of the bathtub body 1 so that it cannot be seen from the washing area side.

The contact surface 2142 is a surface continuous with the protruding surface 2141, and includes, from the outside to the inside, a flat surface in contact with the upper surface of the flange portion 13 and a curved surface in contact with the connection portion between the flange portion 13 and the first long wall portion 121. , are formed consecutively in this order. The curved surface is formed into an arc shape that extends downward as it goes inward. Further, the lower end surface 2143 is formed to connect the curved surface of the contact surface 2142 and the inner wall surface 212, and is constituted by a generally flat inclined surface that extends upward as it goes inward.

Next, the second long side portion 22 will be explained. As shown in FIG. 6, the second long side part 22, like the first long side part 21, has an upper surface 221, an inner wall surface 222 facing the inside of the bathtub, an outer wall surface 223 facing the outside of the bathtub, a lower surface 224, and It has a pair of side wall surfaces 225 at both ends in the longitudinal direction, and is formed into a rectangular parallelepiped shape as a whole. The difference from the first long side portion 21 is as follows.

First, the width is narrower than the first long side portion 21, and the amount of outward protrusion is smaller. Furthermore, the configuration of the lower surface 224 is different from that of the first long side portion 21 . That is, on the lower surface 224 of the second long side portion 22, from the outside to the inside, a protruding portion 2241, a contact surface 2242 that contacts the flange portion 13, and a lower end surface 2243 that connects to the inner wall surface 222 are provided in this order. It is formed. The protruding portion 2241 protrudes downward so as to be continuous with the outer wall surface 223, and is adapted to engage with the edge portion 14 described above. The contact surface 2242 is formed such that a flat surface in contact with the upper surface of the flange portion 13 and a curved surface in contact with the connection portion between the flange portion 13 and the second long wall portion 122 are continuous in this order from the outside to the inside. ing. The curved surface is formed into an arc shape that extends downward as it goes inward. Further, the lower end surface 2243 is formed to connect the curved surface of the contact surface 2242 and the inner wall surface 222, and is constituted by a generally flat inclined surface that extends upward as it goes inward.

In this way, the second long side portion 22 protrudes outward from the flange portion 13, but the protruding outer wall surface 223 comes into contact with the bathroom wall surface 5. That is, as described above, although a gap is formed between the edge portion 14 and the wall surface 5 of the bathroom, the second long side portion 22 fills the gap.

<1-2-2. Short side>
Next, the short side portions 23 and 24 will be explained with reference to FIG. 7. As shown in FIG. 7, the two short sides 23 and 24 have the same configuration, so only one will be explained. That is, the short side portion 23 has an upper surface 231, an inner wall surface 232 facing the inside of the bathtub, an outer wall surface 233 facing the outside of the bathtub, a lower surface 234, and a pair of side wall surfaces at both ends in the longitudinal direction, and as a whole. , is formed in the shape of a rectangular parallelepiped. Note that the side wall surfaces are surfaces fixed to the inner wall surfaces 212 and 222 of the long sides 21 and 22.

The thickness of the short side portion 23 is slightly smaller than that of the long side portions 21 and 22, and the upper surface 231 is disposed slightly lower than the upper surfaces 211 and 221 of the long side portions 21 and 22. Further, the inner wall surface 232 of the short side portion 23 is inclined in an arc shape, and is formed to extend inwardly as it goes downward. The lower surface 234 of the short side portion 23 has a contact surface 2342 that contacts the flange portion 13 and a lower end surface 2343 that connects to the inner wall surface 232 in this order. Unlike the second long side portion 22, no protruding portion is provided, but the other specific configurations are substantially the same as the second long side portion 22, so a description thereof will be omitted.

In this way, each of the short sides 23 and 24 protrudes outward from the flange portion 13, but the protruding outer wall surface 233 comes into contact with the bathroom wall surface 5. As described above, a gap is formed between the edge portion 14 and the wall surface 5 of the bathroom, but the gap is filled by the short sides 23 and 24.

<1-2-3. Structure of the connecting part between the long side and short side>
Next, the structure of the connecting portion between the long sides 21, 22 and the short sides 23, 24 will be described with reference to FIGS. 8 and 9. FIG. 8 is an enlarged view of the connecting portion between the second long side and the short side, and FIG. 9 is a sectional view taken along line EE in FIG. As described above, the side wall portion 12 of the bathtub body 1 is provided with a protrusion portion 18 extending in the vertical direction at a connecting portion between the long wall portions 121, 122 and the short wall portions 123, 124. Therefore, a notch portion 28 is formed at the connecting portion between the second long side portion 22 and the short side portion 23 so as not to interfere with the protrusion portion 18 . Although the connection between the second long side part 22 and one of the short sides 23 will be described here, the connection structure between the first long side part 21 and the short sides 23 and 24 is also the same.

Specifically, as shown in FIG. 8, both sides of the lower end surfaces 2243, 2343 of the second long side part 22 and the short side part 23 are cut diagonally, and a shape is formed between these inclined parts 228, 238. The protruding portion 18 is adapted to fit into the recessed portion (notch portion) 28 that is provided. Further, the second long side portion 22 and the short side portion 23 are configured such that points X at the upper ends of the cutout lower end surfaces 2243 and 2343 are in contact with each other. This eliminates interference between the top plate member 2 and the protrusion 18, and makes it appear as if the lower end surfaces 2243, 2343 of the second long side 22 and short side 23 are smoothly connected to each other.

<1-3. Connection structure between bathtub body and top plate member＞
Next, the connection structure (connection mechanism of the present invention) between the bathtub body 1 and the top plate member 2 will be described with reference to FIG. 10. FIG. 10 is a sectional view showing the connection structure of the top plate member of the bathtub body. In addition, such a connection structure may be provided in any position of the flange part 13 of the bathtub main body 1 and the top plate member 2, and the number is not specifically limited. Preferably, they are provided at intervals of 20 to 50 cm from the corners of the flange portion 13 or the top plate portion 2. Below, as an example, a connection structure between the second long side portion 22 of the top plate member 2 and the flange portion 13 will be described.

First, as described above, the flange portion 13 of the bathtub body 1 has mounting holes (receiving portions) 15 formed at a plurality of locations. Correspondingly, as shown in FIG. 10, a plurality of fixing parts 4 are attached to the top plate member 2. Each fixing portion 4 includes a protrusion member 41 that fits into the attachment hole 15 and a support member 42 that supports the protrusion member 41. The protruding member 41 includes a rod-shaped portion 411 having a circular cross section and a head portion 412 formed at the upper end of the rod-shaped portion 411. The rod-shaped portion 411 has a diameter larger than the inner diameter of the attachment hole 15 of the flange portion 13, and is a portion that is press-fitted into the attachment hole 15 as described later. The lower end of the rod-shaped portion 411 is formed in a hemispherical shape, making positioning in the mounting hole 15 easy. Further, the head portion 412 is formed into a disk shape that is wider than the rod-like portion 411 and specifically has a larger diameter. However, the upper surface is formed in an arcuate cross-section with the thickness increasing toward the center. Note that the protruding member 41 can be formed of, for example, an elastically deformable resin material.

On the other hand, the support member 42 includes a plate-shaped base 421 fixed to the recess 131 formed in the lower surface 224 of the second long side 22 and a holding part 422 attached to the base 421. The holding part 422 is formed into a cup shape so as to form a space between it and the base part 421, and an insertion hole 423 passing through the holding part 422 is formed in the bottom surface. The head portion 412 of the protrusion member 41 is accommodated in this space, and the rod-shaped portion 411 is inserted into the insertion hole 423. The height of the space in the vertical direction is approximately the same as the thickness of the head portion 412, and thereby the protruding member 41 is held in the space so as not to move up and down. Further, the diameter of the insertion hole 423 is smaller than that of the head portion 412 but larger than that of the rod-shaped portion 411. Therefore, the protruding member 41 can be prevented from slipping out of the insertion hole 423, and the rod-shaped portion 411 can move in the horizontal direction within the insertion hole 423. Therefore, the protruding member 41 is held by the supporting member 42 so that it cannot move up and down, but can move horizontally by about 1 mm to 1 cm. Although it depends on the manufacturing precision, the rod-shaped portion 411 may move in a specific direction in the horizontal direction, specifically, in the longitudinal (extension) direction or width direction of the long sides 21 and 22 and the short sides 23 and 24. It may be possible to do so. Further, the head portion 412 of the protrusion member 41 has a large thickness at the center, and this portion is mainly in contact with the base portion 421. Therefore, the frictional resistance when the protrusion member 41 moves within the support member 42 is reduced, and the protrusion member 41 can move smoothly.

<2. Assembling the bathtub>
First, the bathtub body 1 is placed in a bathroom. As described above, the second long wall portion 122 and both short wall portions 123 and 124 of the side wall portion 12 are arranged to face the bathroom wall surface 5, and the corresponding edge portion 14 and the bathroom wall surface 5 A gap is formed between them, for example, as shown in FIGS. 6 and 7.

Next, the top plate member 2 is attached. First, the top plate member 2 is placed on the flange portion 13 of the bathtub body 1, and positioned so that the tip of the protrusion member 41 fits into the attachment hole 15. At this time, since the tip of the protrusion member 41 is formed in a hemispherical shape, it can easily fit into the attachment hole 15. At this time, for example, as shown in FIG. 11, even if the tip of the protruding member 41 does not completely fit into the mounting hole 15, since the protruding member 41 is held movable in the horizontal direction, the top plate member 2, the protruding member 41 moves horizontally so that the hemispherical portion at the tip fits into the attachment hole 15. Then, when the top plate member 2 is further pressed downward, the protruding member 41 is press-fitted into the attachment hole 15, and the top plate member 2 is fixed to the bathtub body 1, as shown in FIG.

At this time, as shown in FIGS. 6 and 7, the second long side 22 and both short sides 23 and 24 of the top plate member 2 fill the edge 14 and the bathroom wall 5, and the second long side 22 and the outer wall surfaces 233, 243 of both short sides 23, 24 are arranged so as to be in contact with the wall surface 5 of the bathroom. Finally, by fitting the apron member 3 into the groove 216 of the first long side 21 of the top plate member 2 and covering the first long wall 121 of the bathtub body 1, the bathtub is completed as shown in FIG. The assembly is completed.

<3. Features>
As described above, according to this embodiment, the following effects can be obtained.
(1) Since the protruding member 41 is fitted into the mounting hole 15 by press fitting, it can be fixed to the bathtub body 1 simply by pushing the top plate member 2. It eliminates the need for fixing with bolts, etc., and can improve workability.

(2) Since the protruding member 41 provided on the top plate member 2 is held movably in the horizontal direction, for example, as shown in FIG. Even if the axes of the protruding member 41 are misaligned with the axes of the protruding member 41, the axes of the protruding member 41 and the mounting hole 15 are aligned by moving in the horizontal direction, so that the protruding member 41 can be accurately fitted into the mounting hole 15. Therefore, the top plate member 2 and the bathtub body 1 can be reliably fixed.

(3) Since a gap is formed between the edge portion 14 of the bathtub body 1 and the wall surface 5 of the bathroom, the worker can work while putting his/her hand into this gap. Therefore, workability can be improved. On the other hand, the outer wall surface 223 of the second long side 22 and the outer wall surfaces 233, 243 of the short sides 23, 24 of the top plate member 2 are in contact with the wall surface 5, and it is not possible to insert a finger between them. Therefore, for example, it is almost impossible for a general user to pull up the top plate member 2 straight and remove it. Therefore, it is possible to prevent the top plate member 2 from wobbling.

(4) The flange portion 13 of the bathtub body 1 is covered by the top plate member 2, and in particular, since the inner wall surfaces 212, 222, 232, and 242 of the top plate member 2 protrude inside the bathtub body 1, the flange portion 13 and the top plate member 2 can be hidden, and the appearance can be improved. Further, the lower end surfaces 2143, 2243, 2343, 2443 of the top plate member 2 extend to the inner surface of the side wall portion 12, covering the connecting portion between the flange portion 13 and the side wall portion 12 while diagonally tilting downward. This prevents dirt from accumulating and makes cleaning easier.

(5) The top plate member 2 is formed of a separate member from the bathtub body 1, and is formed by combining a plurality of rectangular parallelepiped long sides 21, 22 and short sides 23, 24. Therefore, a highly designed sheet with wood grain or the like can be attached or wrapped around the surfaces of the long sides 21, 22 and the short sides 23, 24. Therefore, the decorativeness of the top plate member 2 can be greatly improved. For example, the long side parts 21, 22 and the short side parts 23, 24 can be formed by extrusion molding of a resin material such as a foamed material, and a sheet of decorative acrylic or ABS is applied thereto with adhesive, heat treatment, etc. It can be pasted by

(6) Since only the top plate member 2 can be removed, only the top plate member 2 can be replaced in the bathtub. Therefore, there is no need to replace the entire bathtub, which improves workability and reduces replacement costs. For example, in order to remove the bathtub body 1, it is necessary to remove piping for additional heating, etc., but since such work is not necessary, the workability is high.

<4. Modified example>
Although one embodiment of the present invention has been described above, the present invention is not limited to this, and various changes can be made without departing from the spirit thereof. Note that the following modifications can be combined as appropriate.

<4-1>
In the above embodiment, the top plate member 2 is formed into a rectangular frame shape, but is not limited to this, and can be formed into various shapes such as a circular shape in plan view, an elliptical shape, and a polygonal shape. In accordance with this, the bathtub body 1 can also be formed into a circular, elliptical, or polygonal shape in plan view. Furthermore, the edge portion 14 is not necessarily required.

<4-2>
In the embodiment described above, the protruding member 41 is provided on the top plate member 2, and the attachment hole 15 is provided on the flange portion 13, but these may be reversed. For example, as shown in FIG. 13, a receiving part 6 in which a mounting hole 61 is formed is provided on the lower surface of the top plate member 2, and the projecting member 41 can be mounted to the flange part 13 so as to project upward. Similar to the above embodiment, the protruding member 41 can be press-fitted into the mounting hole 61. Further, this protrusion member 41 is held movably in the horizontal direction by a support member 7 provided on the flange portion 13. Even with such a configuration, effects similar to those of the above embodiment can be obtained.

<4-3>
As shown in FIG. 14, the protruding member 41 may be fixed so as not to move horizontally, and the receiving portion in which the attachment hole is formed may be movable horizontally. In the example of FIG. 14, the protruding member 41 of the top plate member 2 has substantially the same configuration as the above embodiment, but the protruding member 41 is fixed so as not to move in the horizontal direction. On the other hand, a through hole 19 is formed in the flange portion 13, and a receiving portion 8 in which a mounting hole 17 is formed is attached to this through hole 19. The receiving part 8 has a cylindrical main body part 81 smaller than the through hole 19, and the upper and lower ends of the main body part 81 in the axial direction engage around the upper and lower edges of the through hole 19. It has a flange portion 82 . Thereby, the receiving part 8 becomes movable in the horizontal direction inside the through hole 19. Even with such a configuration, effects similar to those of the above embodiment can be obtained.

<4-4>
In the above description, either the protrusion member or the attachment hole is movable in the horizontal direction, but both may be movable. Further, it is also possible to prevent either of them from moving.

<4-5>
In the above embodiment, the protruding member is press-fitted by making the outer diameter of the protruding member larger than the inner diameter of the mounting hole, but if it can be fixed by press-fitting, it can also be fixed by other methods. . For example, the cross-sectional shape of the protruding member 41 and the shape of the mounting hole 15 may be slightly changed so that the protruding member 41 can be press-fitted. Further, the cross-sectional shape of the protruding member 41 and the shape of the attachment hole 15 are not limited to a circular shape, but may be various shapes such as a polygonal shape and an ellipse. Therefore, for example, the protruding member 41 may have an irregular shape, such as having at least one rib on its outer circumferential surface, which also allows press-fitting.

<4-6>
The tip of the protruding member 41 is semispherical to facilitate insertion into the attachment hole 15, but any shape other than a hemisphere may be used as long as the diameter decreases toward the tip. Alternatively, a tapered surface may be formed on the periphery of the attachment hole 15.

<4-7>
The top plate member 2 is configured such that the inner wall side protrudes inward beyond the flange portion 13 so that the contact portion between the flange portion 13 and the top plate member 2 is hidden. The shape is not particularly limited and may not have such a configuration. Therefore, depending on the shape of the bathtub body, it is not necessary to provide the above-mentioned cutout portion 28. Further, the top plate member 2 may be formed by integrally molding the long side parts 21, 22 and the short side parts 23, 24 instead of being assembled together.

<4-8>
The edge portion 14 of the bathtub body 1 may be in contact with the wall surface 5 of the bathroom. Alternatively, a gap may be formed between the top plate member 2 and the bathroom wall 5.

1 Bathtub body 11 Bottom wall 12 Side wall 13 Flange 15 Mounting hole 2 Top plate member 41 Projecting member

Claims (4)

a bathtub body having a bottom wall portion, a side wall portion standing up from a peripheral edge of the bottom wall portion, and a flange portion extending outward from an upper end edge of the side wall portion;
a top plate member formed in a frame shape to cover the flange portion;
a connection mechanism that connects the bathtub body and the top plate member;
Equipped with
The connection mechanism is
at least one protruding member formed on either the flange portion or the top plate member;
a support member that supports the protruding member;
at least one receiving portion formed on the other of the flange portion and the top plate member and receiving each of the protruding members;
Equipped with
A mounting hole is formed in each of the receiving portions,
Each of the protruding members includes a rod-shaped part and a head part connected to an end of the rod-shaped part and larger than an outer diameter of the rod-shaped part,
The tip end surface of the head portion is formed in an arcuate cross-section such that the thickness increases toward the center;
The support member includes a base and a holding part having a space between the base and the head part of the protruding member,
The holding portion is formed with an insertion hole that is larger than an outer diameter of the rod-like portion and into which the rod-like portion is inserted, and the rod-like portion that protrudes from the insertion hole is press-fitted into the attachment hole. ,
The protruding member is configured to be movable in a substantially horizontal direction within the insertion hole ,
The bathtub, wherein the head portion is configured to be in contact with the base portion. The bathtub according to claim 1, wherein the rod-shaped portion of each of the protruding members is formed so that the diameter becomes smaller toward the tip. The bathtub according to claim 1 or 2, wherein the tip of the rod-shaped portion of each of the protruding members is formed into a hemispherical shape. 2. The bathtub according to claim 1, wherein an inner wall surface of the attachment hole is formed with a tapered surface whose diameter decreases in the direction in which the rod-shaped portion of the protrusion member enters.