JP2005296359A - Bath unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive division type unit bath for which a bathtub and a waterproof pan for a place outside the bathtub can be connected to each other while keeping a high water stop property though in a simple structure and carrying-in property to the site is excellent. <P>SOLUTION: The bath unit 1 comprises: the bathtub 11; the waterproof pan 12 for the place outside the bathtub; a pair of connecting members 13A and 13B for watertightly connecting the rim part 10A1 of the bathtub and the bank part 12B1 of the waterproof pan respectively at both end parts of one side face of them; and a freely attachable/detachable planar bathtub apron 14 for watertightly closing an opening part OP formed of the pair of connecting members, the rim part of the bathtub and the bank part of the waterproof pan. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a unit bath (also referred to as a “bathroom unit”) used as a bathroom in general homes, and in particular, a bathtub, a waterproof pan for a washing place, and a bath apron are separately carried to the site, and their components are installed. It relates to a unit bus that can be assembled on site.

The unit bus used at home there are various types, also the type and the bath tank and the washing space are adjacent to install each other's has become mainstream.

In this unit bath, (I): the bathtub and the washroom are molded from the beginning, and then transported to the site as they are integrated. (II): waterproof for the washroom with the bathtub and bath apron. Bread is molded separately, and both are assembled together at the time of construction. Furthermore, (III): Main components such as bathtubs, waterproof pans for washing places, bath apron, and bath apron frames each carried to the site by molding as a separate body, and the like also the split type assembled together on site.

Each type of unit bus has its advantages, but the above-mentioned (III) division type has the advantage of being easy to carry on site, easy on site construction and maintenance, and satisfying the user's sense of quality . The demand for unit buses is still high.

As an example of the above-described split type unit bus (III), the structure of a unit bus described in Patent Document 1 ( the name of the invention of the same document is “ unit bus with a washing place ” ) is known. This unit bath includes a bathtub, a waterproof pan for a washing place, a rectangular frame-like standing connection frame, and a plurality of components obtained by dividing a bathtub shielding plate (opening lid, apron). When this unit bath is assembled, one side of the flange portion of the bathtub and one side of the bank portion of the waterproof pan are connected to each other with screws or bolts using a standing connection frame. Accordingly, the bathtub and the waterproof pan for the washing place are coupled to each other, and the working opening is formed by the standing coupling frame. A bathtub shielding plate is detachably attached to the working opening. Construction work and maintenance work can be efficiently performed through this work opening.
JP 2003-111687 A

However, in the case of the unit bath described in Patent Document 1 described above, in addition to the bathtub and the waterproof pan for the washing place, a connection frame that connects the two in a mutually different state, and a closing that closes the opening formed by the connection frame. Since a large number of components such as a lid and an apron are required, the manufacturing cost is increased accordingly. In addition, since the connecting frame, the lid, and the apron are all large rectangular or rectangular frame shapes, the transportability becomes a problem when transporting to the bathroom part through the narrow corridor of the house under construction. Become.

  Furthermore, as described above, since the opening is formed in a large rectangular shape, the structure for preventing water leakage to the bathtub side is also increased accordingly. More specifically, the rectangular frame-shaped connecting frame and the tub and bank of the waterproof pan for the washing place are assembled in a water-tight manner over a long range of the upper and lower sides of the connecting frame, and further closed on the connecting frame. It is necessary to assemble the lid in a watertight manner along the entire circumference of the rectangular frame portion. That is, even if the distance at which watertightness must be ensured by watertight packing or the like is at a minimum, it is approximately twice the distance of the entire circumference of the connecting frame. For this reason, since the distance of a watertight part is long, the concern with respect to the fall of water stop is large.

In the case of a unit bath represented by Patent Document 1, a support frame capable of height adjustment is directly installed on a building structure (building foundation, floor surface, etc.), and a bathtub is placed on the support frame. It is almost installed. For this reason, when water leaks in the pipe connecting the washing area and the bathtub side, the water leak is directly transmitted to the building structure, which may cause damage such as moisture or damage such as mold. is there. Even if a waterproof pan is placed under the bathtub, water leakage is prohibited in consideration of the difficulty of cleaning.

The present invention was made in view of the situation faced by such a conventional split type unit bath, and can be connected to each other while maintaining a high water-stopping property while having a simple structure for a bathtub and a waterproof pan for a washing place, excellent carrying properties to the site, and, to provide a uni Ttobasu split type which can be more inexpensively manufactured and sold, and an object.

  In order to achieve the above object, the unit bath according to the present invention has, as main aspects thereof, a bathtub having a rim portion formed at the upper edge, and a bank portion disposed adjacent to one side surface of the bathtub. A pair of coupling members of a predetermined length for watertightly coupling the rim portion of the bathtub and the bank portion of the waterproof pan at both ends in the longitudinal direction of the one side surface, A detachable block that watertightly closes a rectangular opening defined by a frame portion including the pair of coupling members, the rim portion of the bathtub, and the bank portion of the waterproof pan on the one side surface of the bathtub. And a plate-like bath apron.

  According to the unit bath of the present invention, the bathtub, the waterproof pan for the washing place, the pair of coupling members, and the bath apron as main components are separately manufactured and shipped. These components are divided and carried into the site as separate bodies and assembled together at the site to provide a unit bath in which a bathtub and a washing place are installed adjacent to each other.

  The combination of the bathtub and the waterproof pan for the washing place is such that the rim portion located on one side of the bathtub and the bank portion located on one side of the waterproof pan are opposed to each other, and one pair is formed at both ends in the longitudinal direction of the facing portion. These are coupled to each other in a watertight manner through the coupling members. This coupling member is a pillar member that is erected on both ends, and vertically couples the rim portion of the bathtub and the bank portion of the waterproof pan for the washing place. For this reason, the coupling member may be small in size.

  By connecting the rim portion of the bathtub and the bank portion of the waterproof pan with the pair of coupling members, an opening is defined by the pair of coupling members, the rim portion of the bathtub, and the bank portion of the waterproof pan. The For this reason, the bathtub and the waterproof pan as separate bodies can be functionally integrated by closing the opening with a bath apron so as to be detachable and watertight.

  As described above, a pair of pillar-shaped coupling members is sufficient for integrating the bathtub and the waterproof pan for the washing place at the site. Moreover, the part which requires a watertight means regarding a connection member is sufficient only in the surrounding part where the upper and lower ends of each connection member and the bath apron abut against the opening.

  Therefore, while having a simpler structure, the bathtub and the waterproof pan for the washing place can be coupled to each other while maintaining high water-stopping property. In addition, the number of main components is reduced, and it is not necessary to carry in a large component in which a bath apron and a waterproof pan for a washing place are integrated in advance as in the prior art, so that the carry-in property is improved. Furthermore, since it is not necessary to use a large coupling member such as a conventional connecting frame, the manufacturing cost can be suppressed. Therefore, it is possible to provide a cheaper division type unit bus with respect to the manufacturing and sales costs required from manufacture to sales.

Hereinafter, with reference to the accompanying drawings, that describes one embodiment of a unit bath according to the present invention.
FIG. 1 shows an overall appearance (appearance after assembly) of the unit bus according to this embodiment, and FIG. 2 shows an appearance of a state where main components of the unit bus are disassembled (before assembly).

  First, an outline centering on the main components of this unit bus will be described.

As shown in FIGS. 1 and 2, the unit bath 1 includes a bathtub 11 and a waterproof pan 12 for washing place installed adjacent to the bathtub 11 (hereinafter referred to as a waterproof pan 12) as a part of its main components. ), A pair of coupling members 13A and 13B for detachably coupling the waterproof pan 12 and the bathtub 11, the coupling members 13A and 13B, a rim portion 11A1 on the waterproof pan side (one side surface) of the bathtub 11, and A bath apron 14 that detachably closes a rectangular opening OP (see FIG. 2) defined by the bank portion 12B1 on the bathtub side (one side surface) of the waterproof pan 12 and retains water-stopping properties. . The bathtub 11, the waterproof pan 12, and the coupling members 13A and 13B are all formed of FRP (fiber reinforced plastic) as an example. The bathtub 11 and the waterproof pan 12 are supported by a support frame SP that can be adjusted in height and placed on a building structure (for example, a concrete floor).

  Here, for convenience of explanation, an orthogonal coordinate system is set in which the longitudinal direction of the bathtub 11 (and the waterproof pan 12 for a washing place) is the Z axis. In this embodiment, in this embodiment, the rim portion 11A1 (or the bank portion 12B1 located on one side of the waterproofing pan 12 for washing place) is the prevention pan 12 (or the bathtub 11). ) Refers to the direction of the plate extending while facing.

  By the bathtub 11, the waterproof pan 12, the coupling members 13A and 13B, and the bath apron 14, the bathtub 11 with the washing place is provided with the bathtub part, the washing part, and the bath apron part separated in advance. It is characterized by a “three-part structure”. That is, these main components (the bathtub 11, the waterproof pan 12, the coupling members 13A and 13B, and the bath apron 14) are each manufactured as a separate body, carried into the site, and assembled integrally at the site.

For this reason, in addition to improving the carrying-in to the site and saving the work, it is possible to secure a large inspection port (that is, the opening OP), so that maintainability is also high. Moreover, since the bathtub 1 and the washing-room floor surface look separate from each other in the appearance of the bathtub after being assembled integrally, it is possible to bring out a high-class feeling of the unit bath 1.

The unit bath 1 includes, as yet another main component, a washing place counter 15 installed almost horizontally at a predetermined height from the floor at one end of the waterproof pan 12 in the Z-axis direction. A decorative plate (cover plate) 16 erected at a position on the near side, and a water supply pipe portion 17 disposed using a space surrounded by the washing counter 15, the decorative plate 16, and the wall surface are provided. Among these, the washing counter 15 and the decorative plate 16 can be easily attached and detached even by a user.

Next, with reference to FIGS. 3 to 16, the structure of the main components of the unit bus 1 will be described in detail along with the operation and effects thereof.

(1. Bathtub)
As shown in FIGS. 3 and 4, the bathtub 11 has a bathtub TB having an elongated internal volume so that the user can stretch and bathe, and a rim portion 11 </ b> A is formed around the bathtub TB. The rim portion 11A is located along the longitudinal direction (Z-axis direction) and adjoins the prevention pan 12, and the edge of the bathtub TB is connected to the first rim portion 11A1. It consists of second to fourth rim portions 11A2 to 11A4.

  Among these, as shown in FIG. 4, the first rim portion 11A1 is integrally formed by bending so that the wall forming the bathtub TB leaves a curved portion having a predetermined width at a predetermined height. The curved portion forms a substantially U-shaped groove 21 that opens downward (Y-axis direction). A partition plate 22 having a predetermined height and extending over the entire length of the groove 21 (Z-axis direction) is suspended from the groove 21 at a position near the center in the width direction (X-axis direction). . Thereby, the groove part 21 is substantially bisected along the longitudinal direction. Of the halved grooves 21A and 21B, the groove 21A on the waterproof pan side is used as a space for detachably mounting the bath apron 14 as will be described later.

  For example, as shown in FIG. 3, a bathtub faucet 25 is erected at a corner portion from the first rim portion 11A1 to the second rim portion 11A2. The bathtub faucet 25 is connected to two pipes (a water supply pipe and a hot water supply pipe) to be described later on the back side of the corner (rim part).

  Although not described in detail in the second to fourth rim parts 11A2 to 11A4, a rising part is formed, and a water stop treatment is secured by fitting a wall of the bathroom into the rising part and water-stopping treatment. Yes.

(2. Waterproof pan)
On the other hand, the waterproof pan 12 is installed at a position lower than the rim portion 11A of the bathtub 11 in the height direction (Y-axis direction). The waterproof pan 12 includes a floor surface portion 12A and a bank portion 12B that integrally forms a rise around the floor surface portion 12A. The floor surface portion 12A includes a floor surface main body 12A1 serving as the center of the washing area, and a substantially rectangular step portion 12A2 defined by a step from the floor surface main body 12A1 at one end in the longitudinal direction (Z-axis direction). The floor main body 12A1 is gently inclined toward one corner near the bathtub, and can conduct water to the drain port 31 formed at the corner. A water supply pipe portion 17 to be described later is installed in the step portion 12A2.

  As shown in FIGS. 2 and 3, the bank portion 12 </ b> B of the waterproof pan 12 is positioned along the longitudinal direction (Z-axis direction) and adjacent to the bathtub 11, and the first bank portion 12 </ b> B <b> 1. It consists of the 2nd-4th bank part 12B2-12B4 which goes around the edge of the waterproofing bread 12 following the bank part 12B1.

  Among these, as can be seen from FIG. 4, the first bank portion 12B1 includes a rail-like floor surface 32A having a narrow width extending in the lateral direction (X-axis direction) from the floor main body 12A1 and the stepped portion 12A2, and the rail-like floor. A rising surface 32B that rises upward from the surface 32A (Y-axis direction) and a rising portion 32C that extends from the rising surface 32B in the lateral direction and rises. That is, the first bank portion 12B1 has a shape that rises in two stages. The first rail-like floor surface 32A is used for detachably mounting the bus apron 14 as will be described later.

  For this reason, on the first rising surface 32B, a plurality of springs 33 are arranged at predetermined intervals along the longitudinal direction (Z-axis direction) at a predetermined height position. Each of the plurality of springs 33 is formed by bending a steel material having a predetermined length and a predetermined width so as to have an inverted V-shaped bent portion that rises from the base portion 33A when viewed from the side surface. Has springiness. Each spring 33 is attached with its inverted V-shaped bent part opened downward. As a result, the plurality of springs 33 cooperate to removably receive a substantially V-shaped concave portion formed on the bottom surface of the bath apron 14 at the bottom of the bent portion and face upward toward the bus apron 14 (Y A pressing force is applied in an oblique direction having components in the axial direction) and in the horizontal direction (in the X-axis direction and in the bathtub direction).

  Of the first bank portion 12B1 described above, the second rising portion 32C has water that has been squeezed out even with various water-stopping packings, so that it can be stored and dried naturally. It serves as a buffer for water.

  Further, although not described in detail in the second to fourth bank portions 12B2 to 12B4 of the waterproof pan 12, each rising portion is formed (see, for example, the second bank portion 12B2 in FIG. 4). Water stoppage is ensured by fitting the wall of the bathroom and water-stopping it. A door for entering and exiting the bathroom is installed at a position over the predetermined range of the third bank portion 12B3.

  The stepped portion 12A2 of the waterproof pan 12 will be described later together with the water supply piping portion 17.

(Coupling member)
Furthermore, FIG. 5 shows an overall perspective view of the first coupling member 13A out of the pair of coupling members 13A and 13B. As shown in FIG. 5, the first coupling member 13 </ b> A has a support body (post part) 39 for supporting a part of the wall of the bathroom, a substantially plate shape, and a predetermined thickness and a predetermined length. A column body (pillar portion) 41 and a rectangular plate-shaped intermediate member 40 that rigidly connects the column body 41 and the column body 39 to each other are provided. The intermediate member 40 is formed such that a part of the lower end side in the attached state is shorter than the column body 39, while the upper end portion is formed at the same height as the column body 39.

  The column body 41 has a substantially plate-like substrate portion 41A and a surface S2 that rises at a right angle (or obtuse angle: see angle θ in FIG. 5) from the middle of one surface S1 (first contact surface) of the substrate portion. The expansion part 41B formed in a convex shape via the (second contact surface), the flange part 41C extending in a projecting manner from the lower end in the attached state of the support body 41, and the attachment of the support body 41 It has integrally with the step part 41D formed to be recessed in the upper end part in the state. The plate surface direction of the flange portion 41C (and the substrate portion 41A) and the expansion direction (convex direction) of the expansion portion 41B are set to be orthogonal to each other.

  The upper end portion of the intermediate member 40 forms a part of the bottom surface of the step portion 41D. As shown in FIG. 6, the wall member WL of the bathroom is positioned at the position of the intermediate member 40 during assembly. For this reason, since the support body 39 is located in the back side of the wall body WL, and is hidden in the back of the wall body WL, it is used for attachment of this wall body WL.

  The support 39 is a substantially rectangular plate-shaped member, and has a widened portion 39A spreading in a triangular shape in the plate surface direction at the lower end portion in the attached state, and protrudes in the plate surface direction at the upper end portion. The protrusions 39B are integrally formed. The lower end surface including the spreading portion 39A of the support 39 is formed so as to be flush with that of the intermediate member, while the protruding portion 39B is formed higher than the column body 41. For this reason, the plate | board surface direction of the support body 39 is orthogonal to that of the flange part 41C (and board | substrate part 41A).

  As shown in FIG. 5, a concave portion 41 </ b> Ca whose surface is partially recessed is formed in a part of the flange portion 41 </ b> C. The first coupling member 13A is coupled to the waterproof pan 12 by fixing the recess 41Ca to the wall surface of the first bank portion 12B1 of the waterproof pan 12 with a screw.

  As shown in FIG. 5, a watertight member LB1 is attached to the bottom surface of the support column 41 of the first coupling member 13A and the bottom surface of the connection member. A watertight member LB2 is attached to the stepped portion 41D of the support column 41 and the protruding portion 39B of the support 39.

  Furthermore, a fitting 42 for attachment to the bathtub 11 is attached to the upper end portion of the first coupling member 13A in the axially attached state.

  Further, a through hole 43 penetrating the front and back is formed at a predetermined height in the portion of the inflating portion 41B. This through-hole 43 is for letting the piping mentioned later pass.

  In contrast, as shown in FIG. 5, the end of the first bank portion 12B1 of the waterproof pan 12 has a cut in accordance with the shape of the L-shaped bottom portion of the support body 41 of the first coupling member 13A. A portion 44 is formed. At this time, when the lower end portion of the first coupling member 13A is inserted into the cut portion 43, as shown in FIG. 6, the surface S3 of the rising portion 32B of the first bank portion 12B1 and the first coupling member Their sizes are set so that the surface S1 (first contact surface) of the support column 41 of the member 13A forms the same surface.

  Further, at the corner between the first rim portion 11A1 and the second rim portion 11A2 of the bathtub 11, the bathtub faucet 25 is bypassed by the mounting bracket 42, and the first coupling member 13A is The upper end portion of the column body 41 is fixed (see FIG. 6). At this time, the surface S4 of the partition plate 22 that defines part of the groove portion 21A on the waterproof pan side formed in the first rim portion 11A1 and the surface S1 of the column body 41 of the first coupling member 13A are the same surface. The size is set to form

  The second coupling member 13B will be described with reference to FIGS. As shown in FIG. 8, the second coupling member 13 </ b> B has a support body (post part) 49 for supporting a part of the wall of the bathroom, a substantially rectangular parallelepiped shape, and has a predetermined thickness and a predetermined length. A support body (pillar portion) 51 and a rectangular plate-shaped intermediate member 50 that rigidly connects the support body 51 and the support body 49 to each other are provided. The intermediate member 50 is formed so that the lower end side and the upper end portion in the attached state have the same height as the column body 49.

  The column body 51 is formed in a convex shape via a base 51A and a surface S6 (second contact surface) that rises at a right angle from the middle of one surface S5 (first contact surface) of the base 51A. An inflatable portion 51B, a flange portion 51C projecting from the lower end portion of the base portion 51A in the attached state of the column body 51, and a step portion 51D formed to be recessed in the upper end portion in the attached state of the column body 51 Have one. The surface S6 may rise from the surface S5 at an obtuse angle. The protruding direction of the flange portion 51C (and the base portion 51A) and the expansion direction (convex direction) of the expansion portion 51B are set to be orthogonal to each other.

  The upper end portion of the intermediate member 50 forms a part of the bottom surface of the step portion 51D. The wall member WL of the bathroom is positioned at the position of the intermediate member 40 during assembly. For this reason, since the support body 49 is located behind the wall body WL and hidden behind the wall body WL, the support body 49 is used for attaching the wall body WL.

  The support body 49 is formed of a substantially rectangular plate-like member, and is integrally formed with a protruding portion 39A protruding in the plate surface direction at the upper end portion in the attached state and protruding higher than the column body 51. Yes. The plate surface direction of the support 39 is orthogonal to that of the flange portion 41C (and the substrate portion 41A).

  As shown in FIG. 8, a concave portion 51Ca having a partially concave surface is formed in a part of the flange portion 51C. The second coupling member 13B is coupled to the waterproof pan 12 by fixing the recess 51Ca to the wall surface of the first bank portion 12B1 of the waterproof pan 12 with a screw.

  As shown in FIG. 8, a watertight member LB3 is attached to the bottom surface of the column body 51 and the bottom surface of the connection member 50 of the second coupling member 13B. A watertight member LB4 is attached to the stepped portion 51D of the support column 51 and the protruding portion 49A of the support 49.

  Furthermore, a fitting 52 for attachment to the bathtub 11 is attached to the upper end portion of the second coupling member 13B in the axial attachment state.

  On the other hand, as shown in FIG. 8, the other end of the first bank portion 12B1 of the waterproof pan 12 is formed with a notch 53 that matches the shape of the bottom of the second coupling member 13B. ing. At this time, when the lower end portion of the second coupling member 13B is inserted into the cut portion 43, as shown in FIG. 9, the surface S3 of the rising portion 32B of the first bank portion 12B1 and the second coupling member The sizes thereof are set so that the surface S5 of the support body 51 of 13B forms the same surface.

  Moreover, the upper end part of the 2nd coupling member 13B is fixedly provided in the corner | angular part between 1st rim | limb part 11A1 and 4th rim | limb part 11A4 of the bathtub 11 via the metal fitting 52 for attachment ( (See FIG. 9). At this time, the surface S4 of the partition plate 22 defining a part of the groove portion 21A on the waterproof pan side formed in the first rim portion 11A1 and the surface S5 of the column body 51 of the second coupling member 13B are the same surface. Their size is set to form.

(Bus Apron)
The bath apron 14 is a substantially rectangular plate body having a predetermined thickness and formed of a material such as FRP having a predetermined thickness. The thickness of the bath apron 14 is substantially matched with the height of the inflating portions 41B and 51B of the first and second coupling members 13A and 13B.

  Further, as shown in FIG. 4, a handle portion 14 </ b> A is formed at a predetermined position on the upper end side of the bath apron 14 along the longitudinal direction (Z-axis direction at the time of attachment). At the same time, a substantially V-shaped groove 14B is formed on the bottom surface of the bath apron 14 so as to match the inverted V-shaped surfaces of the plurality of springs 33 provided on the first bank portion 12B1 of the waterproof pan 12 described above. ing.

  Further, the bath apron 14 is provided with water-tight means that surrounds the periphery of the bath apron 14 approximately in a double manner, as schematically shown in FIGS. 14 (a) and 14 (b). One water-tight means is on the outer surface 14A on the bathtub 11 side in the attached state, and makes a complete round in a rectangular shape along the position in the vicinity of the end of the four round side surfaces orthogonal to the plate thickness direction. It consists of a strip-shaped watertight packing (rubber packing) GP1 attached. The other water-tight means is a strip-like water-tight packing (rubber packing) attached along the three side surfaces of the upper side and the left and right side surfaces in the attached state, among the four side surfaces orthogonal to the thickness direction of the bath apron. ) It consists of GP2. These watertight packings GP1 and GP2 are attached to the bath apron 14 in advance, and when attached to the opening OP of the bath apron 14, are pressed against the bathtub 11 and the waterproof pan 12 with an appropriate pressing force, as will be described later. It is designed to show watertight performance.

Furthermore, a substantially L-shaped bottomed locking groove 14 </ b> C is formed on the surface of the bath apron 14 on the waterproof pan 12 side. An end formed on an end of a decorative plate 16 described later can be fitted into the locking groove 14C. For this reason, when the end of the decorative plate 16 does not fit in the locking groove 14C after the bath apron 14 is mounted when the unit bus 1 is assembled, the mounting of the bus apron 14 to the opening OP is incomplete. It has come to understand that there is. In this case, the mounting operation is performed again so that the bus apron 14 is in a predetermined position.

  A joint material 48 is placed between the bath apron 14 and the rail-like floor surface 32A of the first bank 12B1 of the waterproof pan 12 (see FIG. 16).

(5. Washing area counter, decorative panel, and water supply piping)
As shown in FIG. 3, the water supply pipe portion 17 is provided at a position of a step portion 12 </ b> A <b> 2 that is integrally formed with one end portion of the waterproof pan 12 in the Z-axis direction. That is, the water supply pipe section 17 includes a connection section 61 connected to an external pipe (water supply pipe and hot water supply pipe) standing at a predetermined position of the stepped portion 12A2 forming a part of the floor surface of the prevention pan 12. Two bathroom pipes 62A and 62B (for water supply and hot water supply) connected to the connecting portion 61, a wash water faucet 63 connected to the bathroom pipes 62A and 62B, and bathroom pipes 62A and 62B are branched off, respectively. Branch piping 64A, 64B is provided.

  Among these, the washing faucet 63 is attached to a predetermined height position of the bathroom wall WL. As shown in FIG. 11, two counter holders 65 and 66 for mounting and holding the washing counter 15 are attached to the bathroom wall WL. Both of the counter holders 65 and 66 have a structure in which a strip-shaped metal plate is bent to form a right triangle when viewed from the side. Therefore, a predetermined one side of each counter holding body 65 (66) is attached to the bathroom wall WL, and the other side orthogonal to the one side is used for holding the washing counter 15. The branch pipes 64 </ b> A and 64 </ b> B are sent to the bathtub 11 through a triangular opening formed by one counter holder 65. Therefore, the branch pipes 64A and 64B are locked to the counter holder 65.

  The branch pipes 64 </ b> A and 64 </ b> B pass through the communication hole 43 formed in the first coupling member 13 </ b> A and pass through a position adjacent to the bath apron 14 and reach the bathtub 11 side. The branch pipes 64 </ b> A and 64 </ b> B are routed so as to rise after passing through the first coupling member 11, and are connected to the lower part of the bathtub faucet 25 so that water can be supplied.

  As shown in FIGS. 11 and 12, the branch pipes 64A and 64B extending from the communication hole 43 to the bathtub faucet 25 are entirely covered with a rubber tube 67 as a water receiving material. Since this tube 67 completely covers from the pipe coupling part at the lower end of the bathtub faucet 25 to the communication hole 43 of the first coupling member 13A, even if water leaks to the pipe coupling part, Only the inside of the tube 67 leaks. As schematically shown in FIG. 13, the water droplet is transmitted to the inner surface of the tube 67 and flows out from the communication hole 43 of the first coupling member 13 </ b> A toward the waterproof pan 12. That is, it is constructed so that water droplets due to such water leakage do not flow out to the lower side of the bathtub 11 and are not applied to the building structure.

  On the other hand, the washing place counter 15 has counter holding bodies 65 and 66 so as to cover the water supply pipe section 17, that is, the connection section 61 erected on the stepped section 12 A 2 of the prevention pan 12, the bathroom pipes 62 A and 62 B and the branch pipes 64 A and 64 B. It is detachably disposed on the top. As shown in FIG. 11, one end of the washing counter 15, that is, the end located on the bathtub 11 side, forms a curved portion (inclined surface) 15 A that rises while smoothly curving. The rising height of the curved portion 15 is set to a value capable of smoothly connecting to the edge of the first rim portion 11A1 of the bathtub 11. For this reason, when the bath apron 14 is attached / detached, there is no inconvenience that the washing counter 15 becomes in the way and cannot be attached / detached. In addition, by forming the curved portion 15A, the design is improved as compared with the type that moves from the edge of the bathtub 11 to the washing counter 15 through a step.

  The decorative plate 16 has a curved portion 16A (see FIG. 2) whose end located on the bathtub side is curved toward the front, and the remaining portion is formed in a straight plate shape. A protrusion 16Aa that can be fitted into the locking groove 14C of the bath apron 14 is integrally formed on the curved portion 16A. As shown in FIG. 1, the decorative plate 16 is detachably suspended from the lower surface of the washing counter 15 and is attached so as to cover the water supply pipe 17 in a substantially rectangular parallelepiped shape in cooperation with the washing counter 15. Specifically, the upper end portion of the decorative plate 16 is fitted into a groove portion (not shown) provided at a predetermined position in the Z-axis direction of the washing counter 15 and the lower end portion thereof is positioned at a predetermined facing position of the stepped portion 12A2. It can be fitted to a plurality of installed springs 68 (see FIGS. 3 and 5). For this reason, after attaching the washing place counter 15 and also attaching the bath apron 14 and then attaching the decorative plate 16, the water supply piping portion 17 can be concealed on the back side of the decorative plate 16, and the design is excellent. Become.

(Assembly work)
Here, an operation process by an operator for assembling the above-described unit bus 1 on site will be described. In addition, all the components shall be carried into the field such as a detached house or an apartment house of a general household as a separate body.

  First, the waterproof pan 12 is placed on a support base SP that is installed on the building structure and can be adjusted in height, and the height of the support base SP is adjusted. Next, the bathtub 11 is arranged next to the waterproof pan 12. This bathtub 11 is also arranged on the support frame SP and subjected to height adjustment.

  Next, both end portions on one side of both the bathtub 11 and the waterproof pan 12 are coupled to each other by the first and second coupling members 13A and 13B. Thereby, a frame-like portion having a rectangular large opening OP is formed between the rim portions of both the bathtub 11 and the waterproof pan 12 and the first and second coupling members without using a frame body from the beginning. Is done.

  When this is finished, a wall that defines the bathroom is built around the bathtub 11 and the waterproof pan 12 in a watertight manner. Perform piping. At this time, a rubber tube 67 as a water receiving material is attached to the branch pipes 64A and 64B that are exposed to the bathtub side. This piping work can be performed efficiently because a large opening OP can be used.

  Next, after the washing counter 15 is covered, the bath apron 14 is fitted into the frame-shaped portion described above so as to block the opening OP, with one outer surface 14A of the bath apron 14 facing the bathtub 11. The bath apron 14 and the frame-shaped portion, that is, the bathtub 11 and the waterproof pan 12 are partitioned from the space outside the bathtub 11 by a reliable watertight partition.

Here, with reference to FIG. 15, 16, this frame-shaped part is explained in full detail with the water stop line. When the bathtub 11 and the prevention pan 12 are coupled to each other by the first and second coupling members 13A and 13B when the unit bath 1 is assembled, the rail-shaped surface 32A of the first bank portion 12B1 of the waterproof pan 12 becomes the bathtub 11. The bathtub 11 and the waterproof pan 12 are positioned so as to face the downward groove portion 21A of the first rim portion 11A.

  As a result, as shown as a cross-hatching region in FIG. 15, the surface S4 of the partition plate 22 of the first rim portion 11A1 on the waterproof pan side of the bathtub 11 and the first bank portion 12B1 on the bathtub side of the waterproof pan 12 An opening having a total of four surfaces, a surface S3 of the rising portion 32B and the surfaces S1 and S5 of the support columns 41 and 51 of the first and second coupling members 13A and 13B as pillars located on both sides, are rectangular. The OP is defined, and the surface positions (surface heights) of these four surfaces coincide with each other. That is, by this, the bathtub 11 and the waterproof pan 12 that have been divided are connected to each other while being positioned at predetermined positions, and the rectangular frame-shaped portion is formed by the members (22, 32B, 41, and 51) having four surfaces. And a large rectangular opening OP is formed. This large opening OP is used for work during construction and maintenance.

  Therefore, the bath apron 14 is lifted by grasping the handle portion 14A, and the upper end portion of the bath apron 14 is placed on both sides while facing one outer surface 14A (see FIGS. 14A and 14B) toward the bathtub 11 side. Bring it to the position between the first and second coupling members 13A, 13B on the side and insert it into the groove 21A of the first rim portion 11A1 of the bathtub 11 as it is. Push into the position of the rail-like floor surface 32A of the bank portion 12B1. When the push-in operation is performed, the bus apron is arranged such that the downward V-shaped surface of the spring 33 provided so as to protrude above the rail-shaped floor surface 32A can get over the leading end of the lower end surface of the bus apron 14. Press 14 up slightly. As a result, the downward V-shaped concave portion 14B of the lower end surface of the bath apron 14 and the downward V-shaped surface of each of the plurality of springs 33 are fitted and locked by the spring force of the spring 33 (see FIG. 16). ).

  Since the base portion 33A of each spring 33 is attached to a surface 32B rising vertically from the rail-like floor surface 32A, the base portion 33A faces upward between the base portion 33A and the inverted V-shaped blade portion (upward direction parallel to the base portion). ) And laterally (the spring forces F1 and F2 in the oblique direction in which the components in the direction toward the base are combined. For this reason, the bath apron 14 also faces upward (Y-axis direction) and the bathtub (X-axis direction). (Refer to arrows A1 to A3 in FIG. 16.) In other words, the bath apron 14 fits in the frame-like members (22, 32B, 41 and 51) having the four surfaces described above and is pressed with a constant pressing force. It is done.

  For this reason, between the frame-shaped member (22, 32B, 41 and 51) which presents four surfaces S1, S3, S4 and S5 and the bath apron 14, one watertight packing GP2 is pressed toward the bathtub, and its entire circumference Demonstrate water-stopping (for 1 lap). Furthermore, the part located in the upper end surface of the bath apron 14 among other watertight packing GP1 is pressed upward, and water-stopper is exhibited. In the watertight packing GP1, the portions located on both sides of the remaining bus apron 14 are appropriately designed with the size of the bus apron 14 in the Z-axis direction and the clearance between the first and second coupling members 13A and 13B. By doing so, it is pressed in the direction of both sides by the fitting condition when the bus apron 14 is mounted.

  As a result, as shown by the thick solid lines WS1 and WS2 in FIG. 15, only by attaching the bus apron 14 to the opening OP, the frame-like member (22, 32B, 41 and 51) and the bus apron 14 are substantially omitted. Double water stop lines WS1 and WS2 are formed. LB1 to LB4 in FIG. 15 are mounted in advance on the first and second coupling members 13A and 13B, and when the bathtub 11 and the waterproof pan 12 are coupled to each other, they are interposed between these components. It is a watertight packing which is inserted to form another water stop line.

  Of the water stop lines WS1 and WS2 described above, one water stop line WS1 completely goes around the inside position of the frame-shaped member (22, 32B, 41 and 51), and the other water stop line WS2 is The position outside the water stop line WS1 is made 3/4 rounds (that is, the upper side and the left and right rounds). A reliable water stop performance is exhibited by the substantially double water stop lines WS1 and WS2. In particular, even if the water overflowing from the bathtub 11 tries to enter through the upper part of the bath apron 14 and the left and right edges, the water stop line WS2 of 3/4 lap located outside is present, so that it is reliably blocked by this. . For this reason, this water stop line WS2 cooperates with the other water stop line WS1 located on the inner side to significantly improve the water stop performance, and a reliable water stop is obtained.

  In addition, even if the rising part 32C located in the lower end of the bathtub side surface of the bath apron 14 has a squeezing of moisture from the upper side of the bath apron 14, it can receive this temporarily and can be naturally dried. Thereby, the 3rd water stop means will be installed with respect to the water droplet from the upper part of the bath apron 14 other than the water stop lines WS1 and WS2, and very high water stop is exhibited.

  Finally, the decorative board 16 is fitted into the foot of the washing counter 15. At the time of fitting, if the bath apron 14 is not fitted in a predetermined position, the protrusion 16Aa at the end of the decorative plate 16 cannot be fitted into the locking groove 14C. As a result, the operator can easily recognize that the fitting of the bus apron 14 has not been securely performed at the predetermined position, so that the fitting of the bus apron 14 is performed again. When the bath apron 14 is fitted in a predetermined position, that is, when the water tightness with the frame-like portion of the bath apron 14 is sufficiently secured, the decorative plate 16 can be fitted into the foot of the washing counter 15. . As a result, it is possible to prevent unforeseen construction and prevent a situation where a water leakage accident or the like occurs in advance. In addition, since the load applied to the bath apron 14 can be partially borne on the decorative plate 16 side by the lock mechanism, the load resistance performance of the bus apron 14 can be improved.

(effect)
Since the unit bus 1 according to this embodiment is configured and functions as described above, it can enjoy various advantages.

First, since the bathtub, the bath apron, and the waterproof pan for the washing place have a three-part structure, the main components can be carried separately on the site and assembled. Moreover, like a conventional division system (for example, the unit bath described in Patent Document 1 described above), a coupling frame that couples a bathtub and a waterproof pan for a washing place, a lid that closes an opening formed by the coupling frame, In addition, a large number of large, high-cost components such as a bathtub shielding apron are not required, and it is only necessary to have a pair of coupling members 13A and 13B and a bath apron 14 standing on both right and left ends.

  Although it is a simple configuration using this coupling member and bath apron, the bathtub 11 and the waterproof pan 12 for the washing place can be coupled to each other at predetermined positions at both ends, and this coupling defines a large opening OP. And workability during maintenance can be improved.

  In particular, the bus apron 14 can be removed at any time when inspection or maintenance is required. In this case, after pulling out the joint material 48 placed on the lower part of the bath apron 14, it is only necessary to hang the hand on the bottom surface of the bath apron 14 and lift it up slightly while gently pulling it forward. As a result, the large opening OP appears again, so that necessary work can be performed through the opening OP.

  In addition, since there are fewer large components, it is easy to diversify the product group and improve the design by appropriately changing the surface color and manufacturing method of the bathtub 11, the waterproof pan 12, and the bath apron 14. .

  In addition, a frame-like portion into which the bus apron 14 is fitted can be formed by coupling using the coupling members 13A and 13B, and the bus apron 14 can be easily and detachably attached in a watertight state.

  In this way, a large opening for construction work and maintenance inspection can be taken, reliable water tightness can be secured, and there is a sense of quality due to the partitioning of the waterproof pan and the bath apron.

In addition, since the number of large components as in the conventional division method described above is reduced and the number of components is reduced, the amount of materials used can be reduced, which reduces the manufacturing cost of the components themselves. The sales price of the unit bus 1 can also be lowered.

  In addition, the number of small components increases compared to the conventional division method described above, making it easier to handle in all processes, such as storage, transportation, loading, and assembly, and the work efficiency of the operator can be significantly improved. Become.

Further, even in the unit bath 1 having a three-part structure, the function of a bathtub with a washing place can be realized in the same manner as a conventional non-partition type, so that the merit of being able to carry in the main components separately is particularly great. In particular, since the components can be transported to the position of the bathroom through a narrow passage like a detached house or an apartment house, and the components can be carried in from the bathroom door at the site, the operation cost can be greatly reduced.

  Furthermore, the downsizing also increases the options for the manufacturing method, and enables manufacturing at a lower cost.

  Further, in the present embodiment, when the bath apron 14 is mounted, as can be seen from FIG. 16, a simple structure in which the pressure is applied to the watertight packing by using the pressing force of the spring member 33 and is slightly deformed. Can secure water tightness. This greatly simplifies the structure for ensuring watertightness.

  Furthermore, as shown in FIGS. 14 and 15, in addition to being able to exhibit reliable water tightness performance by the substantially double water stop lines WS1 and WS2, the water apron 14 and GP2 constituting the water stop lines WS1 and WS2 are connected to the bath apron 14. There is an effect by putting it on different surfaces. That is, when both of the watertight packings GP1 and GP2 are arranged only on the outer surface 14A of the bath apron 14 on the bathtub side, the repulsive force when the bath apron 14 is attached increases, and this time, with a larger pressing force. It is necessary to hold down the bus apron 14. When such a situation is reached, it is necessary to increase the size of the spring 33. On the contrary, if the pressing force of the spring 33 is weak, the pressing amount with respect to the watertight packing is insufficient and the watertightness is lowered. On the other hand, as in the present embodiment, the double watertight packings GP1 and GP2 are arranged on two different surfaces of the bath apron 14 (one outer surface 14A and two surfaces consisting of three surfaces, ie, both side surfaces and the upper surface). When dispersed and mounted on the surface portion, it is possible to secure a certain water tightness while suppressing the repulsive force from the water tight packing, the size and pressing performance of the spring 33, the reliable water tight performance, the damage caused by the stress generated by the bath apron, etc. This makes it possible to design in a balanced manner from the viewpoint of avoiding this.

  In addition to the basic operational effects described above, the present embodiment further has various features.

  For example, when a bather sits down in a bathtub and a downward load is applied to the bath apron 14, the spring 33 is deformed so that the bath apron 14 is deformed downward to a certain extent within a range in which the bath apron 14 is kept waterproof. acceptable. Thereby, it can prevent that the bath apron 14, the bathtub 11, and the waterproof pan 12 are couple | bonded as a perfect rigid body, and can support a load by some elastic deformation.

  At this time, the joint material 48 is placed between the bath apron 14 and the rail-like floor surface 32A of the first bank portion 12B1 of the waterproof pan 12 (see FIG. 16). For this reason, when the deformation of the bath apron 14 is increased, the bus apron 14 receives a repulsive force from the joint material 48. For this reason, it is possible to prevent the bus apron 14 from being detached from the spring 33. That is, weakening of the lock function of the spring 33 can be prevented.

  Further, by arranging the joint material 48, it is possible to prevent dust and the like from accumulating in the gap, and the appearance is good.

  Furthermore, the angle formed by the first contact surface S1 and the second contact surface S2 (see FIG. 5) formed on the first and second coupling members 13A and 13B is a right angle or an obtuse angle. In particular, by setting the obtuse angle to a predetermined obtuse angle, when the bath apron 14 is attached to the opening OP, the possibility that the watertight packing GP2 on the side surface is kinked and cut can be extremely reduced. The obtuse angle structure may be implemented only on one of the first and second coupling members 13A and 13B.

  On the other hand, each of the pair of coupling members 13A and 13B is composed of a pillar body (pillar part) 41 (51) having a surface forming a part of the frame part, and the pillar body 41 (51) and a wall of the bathroom. The support body (post part) 39 (49) is provided to support the body WL, and the support body 41 (51) is located farther than the support body 39 (49) with respect to the wall body WL. For this reason, when the wall body WL is built at the position of the intermediate member 40 (50) and caulking between the wall body WL and the pillar body (pillar portion) 41 (51), it is not necessary to wait until the coking is dry. Also, the bus apron 14 can be attached, and the work can be speeded up.

  Further, the column body (pillar portion) 41 (51) is positioned in close contact with both of the bus apron 14 and the wall body WL with the bus apron 14 attached thereto. For this reason, the area which the support | pillar body 41 (51) exposes can be made as small as possible, and it becomes the thing excellent in the designability.

  In addition, the following effects can be obtained by positioning when the coupling members 13A and 13B are mounted and accompanying the positioning.

Each support body 41 (51) of each of the pair of coupling members 13A and 13B has a bottom surface formed in a substantially L shape when viewed from the axial direction. For this reason, only by placing the column body 41 (51) on the flat installation surface of the waterproof pan 12, that is, the surface of the cut portion 44 (53), the coupling member 13A (13B) can be placed vertically without any special construction. Can stand up. Thereby, the bathtub 11 and the waterproof pan 12 can be combined easily and reliably. Further, since the coupling members 13A and 13B are small, the entire unit bus 1 can be reduced in size, weight, and cost. Further, by downsizing the coupling members 13A and 13B, it is possible to increase the area of the opening OP that functions as an inspection port, thereby facilitating inspection work and minimizing the area where the coupling member is exposed as an appearance. It can suppress and can improve design nature.

  Each of the coupling members 13A and 13B includes a support body 41 (51) that presents a part of the frame, a support body 39 (49) that is used to support the bathroom wall WL, and the support body 39 ( 49) and the post body 41 (51) are provided with a substantially rectangular plate-shaped intermediate member 40 (50), so that the support body 39 (49) and the post body 41 (51) can be connected to each other as they are. It is parallel. For this reason, the column body 41 (51) becomes perpendicular to the floor surface only by placing the column body 41 (51) at a predetermined position (the surface of the notch 44 (53)), and the column body 41 (51 ) And the support 39 (49) are positioned in parallel to the wall WL arranged at the position of the intermediate member 40 (50). Thereby, the operation | work required for the coupling | bonding of the bathtub 11 and the waterproof pan 12, and the assembly | attachment of the wall body WL is facilitated.

Moreover, in the unit bath 1 of this embodiment, the piping from the washing-place waterproof pan 12 side to the bathtub 11 side is passed through the communication hole 43 formed in the first coupling member 13A. For this reason, there is an advantage that the connecting member 13A can have a function of holding the pipe, the pipe can be routed efficiently, and the pipe can be placed in the unit bus 1. In particular, by placing this pipe in the unit bath 1, that is, in the bathroom, it is possible to complete the construction and inspection of the pipe in the bathroom. Based on this, work efficiency is greatly improved. Furthermore, even if water leaks from the pipe portion located under the washing place counter 15 due to the arrangement of the pipes, the water is received by the waterproof pan 12 for the washing place. There is nothing.

  In addition, since the portion of the piping located on the bathtub 11 side is covered with the tube 67 as a water receiving material, there was water leakage from the mounting portion of the bathtub faucet 25 and the piping portion connected to the mounting portion. Even in this case, the water can be reliably collected in the washing place waterproof pan 12 through the tube 67. Thereby, the building structure under the bathtub 11 is not damaged by water leakage, and the prevention pan does not need to be placed under the bathtub 11. For such water leakage, the bath apron 14 can be removed and easily inspected from the opening OP.

  On the other hand, since the piping portion of the waterproof pan 12 for the washing place is covered with the washing counter and the decorative plate, the pipe connection portion of the waterproof pan 12 and the communication hole of the first coupling member 13A are almost certainly protected from watering such as a shower. It is possible to prevent deterioration of waterproof performance. In addition, the appearance of the counter portion is improved in design.

  In addition, this invention is not limited to the structure of embodiment mentioned above, Of course, based on a summary to a claim, it can change into a various form further.

1 is an external perspective view of a unit bus according to an embodiment of the present invention. The disassembled perspective view which decomposes | disassembles and shows the main components of a unit bath . The perspective view mainly explaining the outline | summary of the water supply piping part installed in the one end part of the waterproofing pan for washing places of a unit bath . The longitudinal cross-sectional view which mainly shows the cross-section of the bus apron in the attached state. The perspective view which shows the bank part of the 1st coupling member in the removed state, the bathtub, and the prevention pan for washing places. The perspective view which shows the state which mutually connected the bank part of the bathtub and the prevention pan for washing places with the 1st coupling member. The cross-sectional view of the 1st coupling member in the attached state. The perspective view which shows the bank part of the 2nd coupling member in the state removed, the bathtub, and the washing-room prevention bread | pan. The perspective view which shows the state which mutually connected the bank part of the bathtub and the prevention pan for washing places with the 2nd coupling member. The cross-sectional view of the 1st coupling member in the attached state. The perspective view which shows the piping structure of a water supply piping part. The perspective view which shows the attachment state of the tube as a water receiving material arrange | positioned at the bathtub side in a water supply piping part. Explanatory drawing explaining the water conveyance function with respect to the water leak of the tube as a water receiving material. (A) is a perspective view which shows the watertight member with which the bath apron was mounted | worn, and (b) is sectional drawing along the II-II line | wire of the same figure (a). Explanatory drawing of the water stop line produced | generated when a bath apron is mounted | worn with an opening part. The figure explaining the relationship between the pressing force applied to the bath apron by the spring provided in the bank part of the waterproof pan, and water stop performance.

Explanation of symbols

1 unit bath 11 bathtub 11A1 rim portion 12 on one side of bath tub waterproofing pan 12B1 bank portion 13A, 13B on one side of waterproofing pan for washing place first and second coupling member 14 bath apron 14A one of bath apron Outer surface 14C Locking groove 15 Washing area counter 15A Inclined portion 16 Decorative plate 16Aa Locking end portion 22 Partition plate 39 Support body 40 Intermediate member 41 Supporting body 48 Joint material 49 Supporting body 50 Intermediate member 51 Supporting body LB1 to LB4 Watertight packing GP1, GP2 Watertight packing SW1, SW2 Water stop lines S1, S3, S4, S5 Surfaces S1, S5, first contact surfaces S2, S6, second contact surfaces WL, which define an opening, in the bathroom Wall

Claims (11)

A bathtub with a rim formed on the upper edge;
A waterproof pan for a washing place, which is arranged adjacent to one side surface of the bathtub and has a bank portion,
A pair of coupling members having a predetermined length for watertightly coupling the rim portion of the bathtub and the bank portion of the waterproof pan at both ends in the longitudinal direction of the one side surface;
A detachable block that watertightly closes a rectangular opening defined by a frame portion including the pair of coupling members, the rim portion of the bathtub, and the bank portion of the waterproof pan on the one side surface of the bathtub. A unit bus comprising a flat plate-shaped bath apron. The frame portion has a flush frame-like surface comprising four surfaces provided by the pair of coupling members, the rim portion of the bathtub, and the bank portion of the waterproof pan,
The bath apron has a surface of the same height that can contact the frame-shaped surface,
The unit bath according to claim 1, further comprising a watertight member interposed between the frame-like surface of the frame portion and the surface of the bath apron when the bus apron is attached to the frame portion. The unit bath according to claim 2, wherein the watertight member is mounted on the bus apron in advance. 4. The unit bath according to claim 3, wherein the watertight member is a watertight packing that makes a round around a position near an end of the surface of the bath apron of the bath apron in the attached state of the bath apron. . The unit bath according to any one of claims 2 to 4, further comprising pressing means for pressing the watertight member toward the bathtub via the bath apron. The rim part of the bathtub has a groove part opened downward along the longitudinal direction,
The bath apron has a watertight member provided on the upper end surface of the bath apron so as to be continuous along the longitudinal direction thereof,
The upper part of the bath apron is fitted into the groove part from the lower side, and the upper part of the bath apron is attached to the groove part of the bathtub through the watertight member. The unit bus according to claim 5. The pressing means is a spring member that is provided at a rising portion of the bank portion of the waterproof pan for the washing place and that applies a force to the bottom surface of the bath apron in the plate surface direction and the plate pressure direction of the bath apron, respectively. The unit bus according to claim 6. Each of the pair of coupling members has a pillar portion that presents a surface that forms a part of the frame portion, and a post portion that is coupled to the pillar portion and serves to support a bathroom wall,
2. The unit bus according to claim 1, wherein the pillar portion is located farther than the post portion with respect to the wall in the longitudinal direction. 9. The unit bus according to claim 8, wherein the pillar portion is positioned in close contact with both of the bus apron and the wall in a state where the bus apron is attached. Each of the pair of coupling members has a pillar portion that exhibits a surface that forms part of the frame portion, and the pillar portion has a bottom surface that is formed in an approximately L shape when viewed in the axial direction. The unit bus according to claim 1. Each of the pair of coupling members includes a pillar portion that forms a part of the frame portion, a post portion that serves to support a bathroom wall, and a substantially rectangular shape that connects the post portion and the pillar portion. The unit bus according to claim 10, further comprising a plate-like intermediate member.

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