Waterproof pan and bathroom unit equipped with the same

Abstract

To provide a waterproof pan for a bathroom unit that can be formed in the same way as a one-piece waterproof pan, but can be easily divided into two parts, and can be easily connected to a bathtub mounting area and a washing area which are divided into two parts, and can easily absorb cutting errors and connect the two parts with good dimensional accuracy.SOLUTION: A waterproof pan of the present invention is a waterproof pan in which a bathtub mounting pan and a washing pan are connected via a bank part. Positioning parts are formed at outer edges of the bathtub mounting pan area and the washing pan area, which are the two ends of a division line dividing the bathtub mounting pan area and the washing pan area, respectively, and the bathtub mounting pan area and the washing pan area are connected by facing the respective positioning parts.SELECTED DRAWING: Figure 10

Description

Technical Field

[0001] The present invention relates to a waterproof pan constituting a floor portion of a bathroom and a bathroom unit including the same.

Background Art

[0002] Generally, a waterproof pan used in a bathroom unit of a hotel, condominium, general house, etc. has a rectangular floor portion partitioned by a dike portion into a bathtub placement area and a washing area, and forms a wall placement portion around it, and is composed of a synthetic resin molded body such as SMC (Sheet Molding Compound) or FRP (Fiber Reinforced Plastic).

[0003] From the viewpoints of waterproofness and moldability, etc., a structure in which the bathtub placement area and the washing area are integrally molded is preferable for the waterproof pan. However, depending on the construction site, etc., there has been a problem that it is difficult to carry in. For example, when remodeling the inside of a bathroom due to the deterioration phenomenon of a building such as a hotel, condominium, or general house, the bathroom unit composed of a conventionally installed waterproof pan, wall panel, ceiling, etc. is disassembled and carried out outdoors, and a new waterproof pan, wall panel, ceiling, etc. are carried in and a new bathroom unit is assembled. At this time, since the entrance inside the bathroom is narrow, it has been difficult to carry in the waterproof pan in which the bathtub placement area and the washing area are integrally molded as it is.

[0004] Therefore, conventionally, there are many examples in which the bathtub placement area and the washing area are molded with separate molds to facilitate carrying into the bathroom. However, in order to newly prepare the bathtub placement area and the washing area, there are problems such as new investment in molds and equipment, and an increase in management costs due to an increase in the variety. Also, even at a site where the integrally molded waterproof pan can be installed as it is, there are problems such as the need for on-site connection work and the need for parts for connection. Therefore, a structure is known in which the integrally molded waterproof pan is cut before being carried in, and after being carried into the bathroom, the two are connected and fixed together again to install the bathroom unit.

[0005] In Patent Document 1, a structure of a waterproof pan is disclosed in which a ridge body having a groove portion formed on the upper surface is integrally formed at the boundary between the bathtub placement area and the washing area, and the pan can be divided into two parts with this groove portion as the boundary.

[0006] In Patent Document 2, a structure of a floor pan is disclosed in which at the edges of a separately formed bathtub pan and a washing area pan, a concave portion and a convex portion are overlapped via a packing and connected in a watertight manner.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0008] However, as described in Patent Document 1, the method of dividing the bathtub placement area and the washing area on-site and carrying them into the bathroom, and then connecting the two after carrying them in, results in a gap corresponding to the blade thickness between the bathtub placement portion and the washing area during cutting. Therefore, even if this is clamped with a joint material and integrated, it is difficult to accurately determine the outer dimensions from the bathtub placement area to the washing area. If these outer dimensions are incorrect, when installing the wall panel, the wall panel may tilt, the gap may become too large, which is a major factor leading to a decrease in waterproof performance.

[0009] In the structure described in Patent Document 2, although there is a misalignment prevention structure for the connecting concave and convex portions, since they are fitted together in a loose state, as in the structure described in Patent Document 1, it is difficult to accurately determine the outer dimensions from the bathtub pan to the washing area pan. In addition, due to the structure of overlapping the concave and convex portions, it is naturally assumed that the bathtub pan and the washing area pan are separate molded products, and there are various problems such as the need for new investment.

[0010] The present invention has been made in view of the above-described conventional problems, and while it can be molded in the same manner as an integrally molded waterproof pan, it can be easily divided into two parts. The connection work between the two divided bathtub placement areas and the wash area is easy, and it is easy to absorb cutting errors. Moreover, the object is to provide a waterproof pan for a bathroom unit that can connect both with dimensional accuracy. Further, the present invention aims to provide a bathroom unit provided with the waterproof pan.

Means for Solving the Problems

[0011] As means for solving the above problems, the present invention has the following configuration. (1) The waterproof pan according to the present invention is a waterproof pan in which a bathtub placement pan and a wash area pan are connected via a dike portion, and positioning portions are formed on the outer peripheral wall portions of the bathtub placement pan and the wash area pan at both ends of a dividing portion that divides the bathtub placement pan and the wash area pan along the dike portion. The bathtub placement pan and the wash area pan face each other with their respective positioning portions. , are connected via a positioning tool installed between the opposed positioning parts, and the positioning part of the bathtub placement pan and the positioning part of the washbasin pan have a support plate part extending outward from the upper end of the outer peripheral wall part, and an outer wall extending upward from the tip of the support plate part. The positioning tool has a substrate part that makes surface contact with the outer surface of the outer wall, a lower lateral protrusion protruding laterally from the lower part of the substrate part, a peripheral wall contact part extending downward from the tip of the lower lateral protrusion, a positioning tool contact part extending in a direction perpendicular to the substrate part, and an upper lateral protrusion protruding laterally from the upper part of the substrate part. With respect to the positioning part of the bathtub placement pan, the substrate part is brought into surface contact with the outer surface of the outer wall of the bathtub placement pan, the lower surface of the upper lateral protrusion is brought into contact with the upper surface of the outer wall of the bathtub placement pan, the peripheral wall contact part is abutted against the outer surface of the outer peripheral wall part of the bathtub placement pan, and a fixing screw passing through the screw hole formed in the upper lateral protrusion is pressed against the upper surface of the support plate part to mount the positioning tool. With respect to the positioning part of the washbasin pan, the substrate part is brought into surface contact with the outer surface of the outer wall of the washbasin pan, the lower surface of the upper lateral protrusion is brought into contact with the upper surface of the outer wall of the washbasin pan, the peripheral wall contact part is abutted against the outer surface of the outer peripheral wall part of the washbasin pan, and a fixing screw passing through the screw hole formed in the upper lateral protrusion is pressed against the upper surface of the support plate part to mount the positioning tool. The bathtub placement pan and the washbasin pan are connected by a screw member passing through the positioning tool contact part formed in the positioning tool mounted on the positioning part of the bathtub placement pan and the positioning tool contact part formed in the positioning tool mounted on the positioning part of the washbasin pan. It is characterized by this. (2) In the waterproof pan according to the present invention, The bathtub placement pan and the washbasin pan are a bathtub placement pan and a washbasin pan that are cut and separated along a dividing line from an integrally molded object. This is preferable. (3) In the waterproof pan according to the present invention, On each of the positioning members attached to the washbasin pan and the positioning members attached to the bathtub placement pan, positioning member contact portions that face each other in the state of attachment of these positioning members to the washbasin pan and the bathtub placement pan are formed. Through holes that face each other in the state of attachment of the positioning portion to the washbasin pan and the bathtub placement pan are formed in these positioning member contact portions. A screw member is inserted through these opposing through holes, and the contact portions are joined together. The screw member joins the positioning member attached to the washbasin pan and the positioning member attached to the bathtub placement pan Is preferable.

[0012] (4) In the waterproof pan according to the present invention, It is preferable that a water stop material is provided between the bathtub placement pan and the washbasin pan, and the water stop material is sandwiched between the bathtub placement pan and the washbasin pan by tightening the screw member. (5) In the waterproof pan according to the present invention, The positioning member attached to the washbasin pan and the positioning member attached to the bathtub placement pan have a bilaterally symmetric shape, and it is preferable that the positioning member attached to the washbasin pan and the positioning member attached to the bathtub placement pan can be attached to either the bathtub placement pan or the washbasin pan located at both ends of the division line.

[0013] (6) In the waterproof pan according to the present invention, Groove-shaped wall placement portions are formed on the outer peripheral portions of the bathtub placement pan and the washbasin pan, and outer walls that also serve as a part of the wall placement portion are formed on the outer peripheral portions of the bathtub placement pan and the washbasin pan corresponding to the positions in contact with the division line. The positioning members are installed so as to be in contact with these outer walls Is preferable. (7) In the waterproof pan according to the present invention, It is preferable that the positioning portion is constituted by a positioning piece extending from a part of the outer wall in a direction intersecting the outer wall.

[0014] (8) The bathroom unit according to the present invention is as described in (1) to (7) It is characterized by including the waterproof pan described in any one of them.

Effects of the Invention

[0015] According to the present invention, in a structure in which a waterproof pan is separated into a bathtub placement pan and a washbasin pan with a ridge portion that separates the bathtub placement pan and the washbasin pan as a boundary line, positioning portions for attaching a positioning tool to an accurate position are arranged on both the bathtub placement pan and the washbasin pan at the outer edge portions of the waterproof pan at both ends of the separation line. Thereby, when the bathtub placement pan and the washbasin pan are joined via the positioning tool, both can be joined at a desired position with high dimensional accuracy and installed.

[0016] Further, according to the present invention, in a structure in which a waterproof pan is cut into a bathtub placement pan and a washbasin pan with a ridge portion that separates the bathtub placement pan and the washbasin pan as a boundary line in an integrally formed waterproof pan, positioning portions for attaching a positioning tool to an accurate position are arranged on both the bathtub placement pan and the washbasin pan at the outer edge portions of the waterproof pan at both ends of the cut line. Thereby, when the bathtub placement pan and the washbasin pan are joined via the positioning tool, both can be joined at a desired position with high dimensional accuracy and installed. Therefore, a bathroom can be constructed in which a waterproof pan that can be reliably joined is installed at a desired position with high dimensional accuracy. Also, when it is not necessary to divide the bathtub placement pan and the washbasin pan, the waterproof pan can be used as an integrally formed product without performing post-processing on the integrally formed bathtub placement pan and washbasin pan. For this reason, it is possible to suppress investment in new molds and equipment dedicated to the divided bathtub placement pan and washbasin pan, and furthermore, it is possible to suppress an increase in management costs accompanying an increase in the variety of waterproof pans.

[0017] By cutting and separating the integrally formed waterproof pan into two, a bathtub placement pan and a washbasin pan, even in a structure where the entrance of the bathroom unit is narrow, the bathtub placement pan and the washbasin pan can be easily carried into the bathroom unit. Also, even in a bathroom unit with a narrow entrance, compared to a waterproof pan with an integral structure, if the divided bathtub placement pan and washbasin pan are used, they can be easily aligned and arranged at the desired positions within the bathroom unit.

[0018] When installing a bathtub placement pan and a washbasin pan in a bathroom, positioning tools are attached to both of them, and the bathtub placement pan and the washbasin pan can be drawn in by tightening with a screw member until a pair of opposing positioning tools come into contact. As a result, when arranging a waterproofing material between the bathtub placement pan and the washbasin pan, the waterproofing material can be crushed horizontally by the bathtub placement pan and the washbasin pan, and the waterproof performance at the joint between the bathtub placement pan and the washbasin pan is improved.

Brief Description of the Drawings

[0019]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Embodiments for Carrying Out the Invention

[0020] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In some of the figures, some of the detailed reference numerals attached to other figures are omitted. Further, in the following embodiments, the directions such as the vertical direction will be described based on the state where the waterproof pan 1 (the divided waterproof pan 1a obtained by dividing this) according to the present embodiment is installed.

[0021] As shown in Fig. 1, in the bathroom unit 6 in which the waterproof pan 1 according to the present embodiment is installed, a plurality of wall panels 602 and a door 601 are erected on the groove-shaped wall placement part 103b formed on the outer edge part (outer peripheral edge part) 103 of the waterproof pan 1, and a ceiling 603 is installed thereon, and a bathtub 604, a bathtub apron 605, a faucet 606, etc. are attached. Further, although not shown in the figure, the waterproof pan 1 has a plurality of support legs with adjustable length at its lower part and is supported by the floor of the building.

[0022] The waterproof pan 1 is rectangular in plan view. As shown in FIGS. 2 and 4(a), the washbasin pan 3 and the bathtub placement pan 2 are partitioned by a dike portion 101, and before the cutting described later, they are integrally formed. As shown in FIG. 1, a bathtub 604 is installed on the bathtub placement pan 2, and a bathtub apron 605 is provided between the dike portion 101 and the bathtub 604 so as to cover the side surface of the bathtub 604 on the washbasin pan 3 side. Note that the lower end portion of the bathtub apron 605 is installed so as to cover the end portion on the washbasin pan 3 side on the upper surface of the dike portion 101, and the connecting member 4 described later is hidden from view by the bathtub apron 605 so as not to be visible from the washbasin pan 3 side.

[0023] As shown in FIG. 2, the washbasin pan 3 has a resin bottom wall 303 that is rectangular in plan view, and a low resin outer peripheral wall portion 103a that is integrally formed with the bottom wall 303 and surrounds three sides thereof. A groove-shaped wall placement portion 103b is formed along the upper end of the outer peripheral wall portion 103a provided at the outer peripheral edge of the three sides of the washbasin pan. The bathtub placement pan 2 is arranged on the remaining one side through the dike portion 101, and the bathtub placement pan 2 and the washbasin pan 3 are separated by the dike portion 101. In the example shown in FIG. 2, the bathtub placement pan 2 is formed on one long side of the bottom wall 303.

[0024] In the configuration shown in FIG. 2, a drain port forming portion 305 is formed at the center of the long side on the bathtub placement pan 2 side in the washbasin pan 3. The bottom wall 303 of the washbasin pan 3 is divided into, for example, three regions having a trapezoidal shape in plan view, and each region is given a downward slope that inclines toward the drain port forming portion 305. In FIG. 2, the boundary lines dividing the three regions are omitted and are drawn in a simple planar shape. The water gradient for guiding water to the drain port in the bottom wall 303 of the washbasin pan 3 is not limited to the structure of dividing into three regions as described above, and any shape of the bottom wall applied to a general washbasin pan may be adopted.

[0025] The bathtub placement pan 2 has a resin bottom wall 203 that is rectangular in plan view as shown in Fig. 2, and has a low resin outer peripheral wall portion 103a integrally formed on the bottom wall 203 and surrounding three sides thereof. A groove-shaped wall placement portion 103b is formed along the top of the outer peripheral wall portion 103a provided at the outer peripheral edges of three sides of the bathtub placement pan 2, and the washbasin pan 3 is integrally formed on the remaining one side via a dike portion 101. The bathtub placement pan 2 and the washbasin pan 3 are integrally molded at the stage of being produced in the factory. Figs. 3(a) and 4(a) show the state where the bathtub placement pan 2 and the washbasin pan 3 remain integrally molded. Figs. 3(b) and 4(b) show the state where the bathtub placement pan 2 and the washbasin pan 3 are cut along the dike portion 101 at their boundary.

[0026] In the example shown in Fig. 2, the washbasin pan 3 is formed on one long side of the bottom wall 203. In Fig. 2, it shows the state of being cut and separated along the dividing line L along the length direction of the dike portion 101 from the state where one long side of the washbasin pan 3 and one long side of the bathtub placement pan 2 are integrally molded via the dike portion 101, and divided into the bathtub placement pan 2 and the washbasin pan 3. The dike portion 101 extends linearly with a predetermined width at the boundary portion between the washbasin pan 3 and the bathtub placement pan 2. In the configuration shown in Fig. 2, a drain opening forming portion 205 is formed at the center of the long side on the washbasin pan 3 side in the bathtub placement pan 2.

[0027] Fig. 3(a) is a side view of the waterproof pan shown in Fig. 2 as seen from the Z direction before cutting, and Fig. 3(b) is a side view of the waterproof pan after cutting as seen from the Z direction shown in Fig. 2. The waterproof pan 1 that was integrally molded before cutting is a divided waterproof pan 1a as shown in Fig. 3(b) after cutting. Figs. 4(a) and (b) show a cross-section along the YY line connecting the center of the drain opening forming portion 305 of the washbasin pan 3 and the center of the drain opening forming portion 205 of the bathtub placement pan 2. Fig. 4(a) shows the waterproof pan 1 before cutting, and Fig. 4(b) shows the divided waterproof pan 1a after cutting.

[0028] The wall placement part 103b formed at the upper periphery of the bathtub placement pan 2 and the wall placement part 103b formed at the upper periphery of the washbasin pan 3 are continuous at both ends in the length direction of the dike part 101 in a state where the bathtub placement pan 2 and the washbasin pan 3 are integrally formed. By making the wall placement part 103b of the bathtub placement pan 2 and the wall placement part 103b of the washbasin pan 3 continuous, the wall placement part 103b is formed so as to surround the entire circumference of the waterproof pan 1 in a rectangular shape.

[0029] As shown in FIGS. 7(a) and 7(b), the wall placement part 103b is formed in a groove shape at the upper end of the outer peripheral wall part 103a of the waterproof pan 1. A support plate part 103d extending horizontally is formed at the upper end of the outer peripheral wall part 103a, and an outer wall 103c and an inner wall 103e are provided on the outer side and the inner side of this support plate part 103d to form the groove-shaped wall placement part 103b. Since the support plate part 103d is formed on the outer peripheral wall part 103a so as to surround the entire circumference of the waterproof pan 1, the wall placement part 103b is formed on the entire circumference of the waterproof pan 1.

[0030] As shown in FIGS. 7(a) and 7(b), the width of the support plate part 103d is formed to be several times the thickness of the outer peripheral wall part 103a, and the thickness of the support plate part 103d is formed to be slightly thinner than the thickness of the outer peripheral wall part 103a. The outer end of the support plate part 103d is arranged so as to protrude slightly outside the outer surface of the outer peripheral wall part 103a, and the inner end of the support plate part 103d is arranged so as to protrude slightly inside the inner surface of the outer peripheral wall part 103a.

[0031] Note that the width and thickness of the support plate part 103d, and the width and height of the outer wall 103c and the inner wall 103e may be appropriately selected in view of the thickness and weight of the wall panel 602, the door 601, etc. installed on the wall placement part 103b, and are not limited to the examples shown in FIG. 7 and described above. As described above, since the waterproof pan 1 is separated into the bathtub placement pan 2 and the washbasin pan 3 by cutting, the wall placement part 103b is formed along two short sides and one long side of the bathtub placement pan 2. Similarly, in the washbasin pan 3, the wall placement part 103b is formed along two short sides and one long side.

[0032] Since the wall placement part 103b is formed around the entire circumference of the waterproof pan 1, as shown in Fig. 1, wall panels 602 are installed around the bathtub placement pan 2 and around the washbasin pan 3, a door 601 is installed on the wall placement part 103b corresponding to the entrance of the bathroom unit 6, and a ceiling 603 is arranged, thus constituting the bathroom unit 6.

[0033] In the bathtub placement pan 2, an inclined wall 206 is formed so as to incline obliquely upward from the peripheral portion of the drain opening forming part 205, and the upper end portion of this inclined wall 206 extends horizontally to constitute the bathtub placement pan side of the dike part 101. As shown in Fig. 2, the inclined wall 206 extends along one long side of the bathtub placement pan 2 from one end side to the other end side of the long side and is continuous with the dike part 101. In the washbasin pan 3, an inclined wall 306 is formed so as to incline obliquely upward from the peripheral portion of the drain opening forming part 305, and the upper end portion of this inclined wall 306 extends horizontally to constitute the washbasin pan side of the dike part 101. As shown in Fig. 2, the inclined wall 306 extends along one long side of the washbasin pan 3 from one end side to the other end side of the long side and is continuous with the dike part 101.

[0034] As shown in the cross-section of Fig. 4(a), the upper end portions of the inclined wall 206 of the bathtub placement pan 2 and the upper end portions of the inclined wall 306 of the washbasin pan 3 are continuously integrated by a plate-like member having a certain width extending horizontally, forming a convex dike part 101. The bathtub placement pan 2 and the washbasin pan 3 are integrally formed by a constituent material such as resin via the dike part 101. The plate thickness of the plate material constituting the bathtub placement pan 2 and the plate thickness of the plate material constituting the washbasin pan 3 are made substantially equal, and the plate thickness of the plate material constituting the dike part 101 is also made approximately the same as the plate thickness of the bathtub placement pan 2 and the washbasin pan 3.

[0035] On the back side of the ridge portion 101 of the waterproof pan 1, there are provided a washbasin pan side ridge body 102a and a bathtub placement pan side ridge body 102b that extend downward in a plate shape over the entire length of the ridge portion 101 and are integrally formed with the ridge portion 101. The thicknesses of these ridge bodies 102a and 102b are equal to the thickness of the plate material constituting the ridge portion 101, and the ridge bodies 102a and 102b protrude downward. In the example shown in Fig. 4(a), the lower end portions of the ridge bodies 102a and 102b are located at about half of the depth of the inclined wall 206 of the bathtub placement pan 2 and about half of the depth of the inclined wall 306 of the washbasin pan 3. In the example shown in Fig. 4(a), the depth of the inclined wall 206 of the bathtub placement pan 2 is formed slightly deeper than the depth of the inclined wall 306 of the washbasin pan 3.

[0036] Furthermore, a plurality of protrusions 104 are integrally formed along the length direction of the ridge portion 101 on the base end side of the washbasin pan side ridge body 102a. As shown in Fig. 4(a), the protrusion 104 has a vertical length of about half of the length (vertical length) of the washbasin pan side ridge body 102a and a lateral width that is several times the thickness of the washbasin pan side ridge body 102a. Also, at positions where the ridge bodies 102a and 102b are extended along the length direction of the ridge portion 101, vertical rib-shaped positioning portions (positioning means) 105a and 105b shown in Figs. 3(a) and (b) are formed on the outer surface of the waterproof pan.

[0037] As shown in Fig. 3(a) or Fig. 4(a), the waterproof pan 1 is formed in a size that can be installed in the bathroom unit 6 in either a state of being integrated without division or a state of a divided waterproof pan 1a cut into the washbasin pan 3 and the bathtub placement pan 2 as will be described in detail later based on Fig. 3(b) or Fig. 4(b).

[0038] Since the washbasin pan side ridge body 102a and the bathtub placement pan side ridge body 102b have the same thickness dimension as the ridge portion 101, when molding the waterproof pan 1, there is no occurrence of sink marks due to resin shrinkage, and the curing time of the material can be shortened.

[0039] It is preferable that the washing area pan side rib 102a and the bathtub placement area pan side rib 102b are provided with a horizontal interval of about 15 to 30 mm at the center in the thickness direction of each.

[0040] The divided waterproof pan 1a shown in FIG. 4(b) is obtained by cutting the bank part 101 of the waterproof pan 1 twice (at two locations), leaving a part of the thickness of the washing area pan side rib 102a on the washing area pan 3 side and a part of the bathtub placement area pan side rib 102b on the bathtub placement area pan 2 side, and is divided into two parts.

[0041] If the cutting width of the washing area pan side rib 102a and the cutting width of the bathtub placement area pan side rib 102b are each made as thin as 1 to 1.5 mm, there is less resistance such as blade clearance and vibration during cutting, accurate cutting is possible, and the workability during cutting is also good. Also, it is possible to smoothly finish the cutting surfaces of the washing area pan side rib 102a and the bathtub placement area pan side rib 102b. By making the cutting surfaces smooth, the water stop surface during joining can be accurately ensured. For cutting, cutting power tools such as a disk grinder, a jigsaw, and a circular saw, and cutting machines such as a panel saw can be used. When cutting using these cutting machines, it is possible to accurately cut while reducing a part of the thickness of the washing area pan side rib 102a and a part of the thickness of the bathtub placement area pan side rib 102b respectively.

[0042] The cutting of the waterproof pan 1 may be carried out at a factory or the like before transportation to the construction site, or may be carried out after transportation to the construction site or the like.

[0043] Also, as shown in FIG. 11, the cutting of the waterproof pan 1 may be configured to cut the bank part 101 of the waterproof pan 1 once along the washing area pan side rib 102a, leaving the washing area pan side rib 102a on the washing area pan 3 side and the bathtub placement area pan side rib 102b on the bathtub placement area pan 2 side, and dividing it into two parts. Since the cutting position in the case of a single cut is the same as one of the positions in the case of a double cut, cutting can be performed without problems.

[0044] According to the divided waterproof pan 1a of the bathroom unit 6 described above, there is no need to invest in new molds and equipment for the manufacture of the divided waterproof pan 1a, and the investment cost can be suppressed. It is possible to provide a divided waterproof pan 1a that can be carried into a narrow passage, which was difficult to achieve with the waterproof pan 1 in which the washbasin pan 3 and the bathtub placement pan 2 were integrally formed. For example, in the case of the bathroom unit 6 shown in FIG. 1, since the width of the portion where the door 601 is attached is small, the entrance of the place where the bathroom unit 6 is installed is a narrow passage. If only the washbasin pan 3 is first carried into the bathroom through this narrow passage and aligned and installed, and then the bathtub placement pan 2 is installed in the bathroom through the narrow passage, it can be easily carried in and installed without any problem through the narrow passage.

[0045] In the case of new construction, if the waterproof pan 1 is installed before installing the partition walls around the bathroom, it is easy to carry in even if the waterproof pan 1 is not divided. However, in the case of bathroom renovation or reform, etc., the partition walls surrounding the bathroom unit 6 are already provided. In this case, it is necessary to carry in the waterproof pan 1 using only the passage that becomes the entrance of the bathroom unit on the premise that the partition wall is partially removed or not removed. However, if the divided waterproof pan 1a is used as described above, the carrying in becomes easy.

[0046] Here, if the waterproof pan 1 is divided by cutting it twice as shown in FIG. 4(b), a part of the dike portion 101 is cut off over a large width, and a gap is formed between the washbasin pan 3 and the bathtub placement pan 2. Therefore, there is a risk that the washbasin pan 3 and the bathtub placement pan 2 cannot be installed in the correct positions. If the washbasin pan 3 and the bathtub placement pan 2 cannot be installed in the correct positions, the wall panel 602 and the door 601 cannot be accurately arranged during assembly, and there is a problem that the bathroom unit 6 is distorted, and it is considered that gaps are generated and the airtightness and watertightness are reduced, which is not preferable.

[0047] Therefore, by connecting the washbasin pan 3 and the bathtub placement pan 2 with a positioning tool 5 described later, the structure can be assembled accurately in the same manner as the waterproof pan 1 before division. Hereinafter, a more detailed structure will be described with reference to the drawings.

[0048] The split waterproof pan 1a according to this embodiment is divided into a washbasin pan 3 and a bathtub placement pan 2 as shown in FIG. 4(b). The washbasin pan 3 is provided with a washbasin side embankment portion 301, a washbasin pan side protrusion 102a, a protrusion 104, and a washbasin side cut surface 302. The bathtub placement pan 2 is provided with a bathtub side embankment portion 201, a bathtub placement pan side protrusion 102b, and a bathtub side cut surface 202. The two cuts mentioned here refer to the first cut, which is the process of cutting the embankment portion 101 to reduce the thickness of the washbasin pan side protrusion 102a until the washbasin side cut surface 302 is formed. Next, the second cut is the process of cutting the embankment portion 101 to reduce the thickness of the bathtub placement pan side protrusion 102b until the bathtub side cut surface 202 is formed. The order of the two cuts may be such that the cut on the bathtub placement pan 2 side is the first cut and the cut on the washbasin pan 3 side is the second cut, and the order of cutting does not matter.

[0049] In this embodiment, when the bathtub side cut surface 202 of the bathtub placement pan 2 is viewed in plan as shown in FIG. 2, the straight line drawn is referred to as the split line L on the bathtub placement pan 2 side. Also, when the washbasin side cut surface 302 of the washbasin pan 3 is viewed in plan as shown in FIG. 2, the straight line drawn is referred to as the split line L on the washbasin pan 3 side. These split lines L are formed so as to divide the embankment portion 101 in the width direction, and the bathtub placement pan 2 and the washbasin pan 3 are divided into two along the split line L in the plan view shown in FIG. 2.

[0050] The washbasin side cut surface 302 and the bathtub side cut surface 202 have inclinations and dimensional errors due to cutting. Therefore, it is not preferable to use them as positioning references for the washbasin pan 3 and the bathtub placement pan 2, and another means is required.

[0051] FIGS. 5(a) to (c) show a first positioning tool 5a according to this embodiment. This first positioning tool 5a integrally has a substrate portion 501, an upper lateral protrusion 502, a lower lateral protrusion 503, a peripheral wall contact portion 504, a positioning portion contact piece 505, a positioning tool contact portion 506, and a rotation suppressing portion 510 formed by pressing a single metal plate such as a plated steel plate or a stainless steel plate. Note that the first positioning tool 5a may be formed of a reinforced resin containing glass for reinforcement.

[0052] The upper lateral protrusion 502 protrudes in the lateral direction of the substrate portion 501 and forms an angle that is approximately perpendicular to the substrate portion 501, but not exactly perpendicular. When the substrate portion 501 is in the vertical direction, it is bent at an angle that protrudes slightly obliquely upward from the substrate portion 501. A tapping screw hole 507 is provided in the upper lateral protrusion 502, and a fixing screw 511 described later is screwed into this tapping screw hole 507.

[0053] The lower lateral protrusion 503 is formed by bending at a right angle with respect to the substrate portion 501 a portion of the metal plate adjacent to the lower end of the substrate portion 501. As a result, the lower lateral protrusion 503 protrudes from the substrate portion 501 in a direction substantially the same as that of the upper lateral protrusion 502 below the upper lateral protrusion 502. The peripheral wall contact portion 504 is formed by bending at a substantially right angle with respect to the lower lateral protrusion 503 a portion of the metal plate adjacent to the tip of the lower lateral protrusion 503 and extends substantially parallel to the substrate portion 501. More specifically, the angle between the lower lateral protrusion 503 and the peripheral wall contact portion 504 is set to an angle slightly larger than 90 degrees corresponding to the inclination of the outer peripheral wall portion 103a of the waterproof pan 1 or the divided waterproof pan 1a. In addition, an auxiliary fixing hole 509 having a size through which a tapping screw passes is provided at the center of the peripheral wall contact portion 504.

[0054] When viewed in FIGS. 5(a) and 5(c), the positioning portion contact piece 505 is formed by bending at a right angle with respect to the peripheral wall contact portion 504 a portion of the metal plate adjacent to the right end of the peripheral wall contact portion 504 toward the substrate portion 501 side. When viewed in FIGS. 5(a) and 5(c), the positioning tool contact portion 506 is formed by bending at a right angle with respect to the substrate portion 501 a portion of the substrate portion 501 made of the metal plate adjacent to the right end. A through hole 508 is provided in the positioning tool contact portion 506. The rotation suppressing portion 510 is formed by raising a part of the substrate portion 501 and protrudes laterally from the substrate portion 501.

[0055] Note that the first positioning tool 5a and the second positioning tool 5b described later are formed symmetrically with respect to the substrate portion 501 as a reference plane. To avoid duplication of description, the corresponding parts use the same reference numerals, and when they are collectively referred to, they may simply be referred to as "positioning tool 5".

[0056] Next, with reference to FIGS. 6, 7, and 8, a method of attaching the positioning tool 5 to the divided waterproof pan 1a will be described.

[0057] First, as shown in FIG. 6, the positioning tool contact portion 506 of the first positioning tool 5a and the positioning tool contact portion 506 of the positioning tool 5b for the bathtub placement portion pan are opposed to each other, and a screw member (draw-in screw) 512 is passed through each through hole 508. Further, a square nut 513 is tightened onto the tip of the screw member 512. In FIG. 6, the screw member 512 is passed from the through hole 508 of the first positioning tool 5a through the through hole 508 of the positioning tool 5b for the bathtub placement portion pan. Therefore, the tip portion of the screw member 512 passes through the through hole 508 of the positioning tool 5b for the bathtub placement portion pan and protrudes to the right side thereof. Accordingly, the square nut 513 is tightened onto this protruding tip portion. The tightening amount is set such that the tip of the screw member 512 slightly protrudes from the square nut 513, and it is in a temporarily fixed state.

[0058] In the present embodiment, in order to suppress an increase in cost due to secondary processing of the positioning tool 5, the square nut 513 is used. Therefore, if possible, a hexagonal nut may be welded to one of the positioning tool contact portion 506 of the first positioning tool 5a and the positioning tool contact portion 506 of the positioning tool 5b for the bathtub placement portion pan, and the screw member 512 may be tightened into the welded hexagonal nut. Alternatively, a tapping process may be performed on one of the positioning tool contact portion 506 of the first positioning tool 5a and the positioning tool contact portion 506 of the positioning tool 5b for the bathtub placement portion pan to form a screw hole, and the screw member 512 may be tightened into this screw hole.

[0059] To attach the positioning tool 5 to the split waterproof pan 1a, as shown in FIGS. 7(a) and 7(b), the operator moves the wall placement portion 103b and the outer wall 103c of the split waterproof pan 1a so as to insert them between the upper lateral protrusion 502 and the lower lateral protrusion 503 of the positioning tool 5, and deeply inserts them until the outer wall 103c contacts the substrate portion 501. After that, a fixing screw 511 is screwed into the tapping screw hole 507 and tightened, so that the outer wall 103c of the wall placement portion 103b is sandwiched between the tip of the fixing screw 511 and the lower lateral protrusion 503, and the outer wall 103c is sandwiched between the fixing screw 511 and the substrate portion 501, thereby attaching the positioning tool 5 to the split waterproof pan 1a. In addition, when the outer wall 103c is damaged during transportation or assembly, tapping screws or the like may be driven into the outer wall 103c through the auxiliary fixing holes 509 to fix the positioning tool 5 to the outer peripheral wall portion 103a.

[0060] FIGS. 8(a) and 8(b) are diagrams schematically showing an example in which the temporarily fixed first positioning tool 5a and the second positioning tool 5b are attached to the washbasin pan 3 and the bathtub placement pan 2. For the washbasin pan 3 and the bathtub placement pan 2, the washbasin side bank portion 301 and the bathtub side bank portion 201 are adjusted in advance so as to have the same height, and arranged so that the outer peripheries of the outer peripheral wall portions 103a are at the same position. Even when the washbasin side cut surface 302 and the bathtub side cut surface 202 are at separated positions, the gap between the positioning tools 5 can be opened by the length of the screw member 512, so that insertion is easily possible. In addition, the attachment positions of the first positioning tool 5a and the second positioning tool 5b are determined by bringing the respective positioning portion contact pieces 505 into contact with the washbasin side positioning portion 105a and the bathtub side positioning portion 105b.

[0061] As described above with reference to FIGS. 7(a) and 7(b), by inserting the wall placement portion 103b and the outer wall 103c between the upper lateral protrusion 502 and the lower lateral protrusion 503 of the first positioning tool 5a, the vertical position of the first positioning tool 5a can be determined. Simultaneously with this operation, as shown in FIGS. 8 and 9, the positioning portion contact piece 505 of the first positioning tool 5a is brought into contact with the washing area side positioning portion 105a, and the installation position of the first positioning tool 5a is temporarily determined by tightening the fixing screw 511. Also, the positioning portion contact piece 505 of the second positioning tool 5b is brought into contact with the positioning portion 105a of the bathtub mounting pan 2, and the installation position of the second positioning tool 5b is temporarily determined by tightening the fixing screw 511.

[0062] FIGS. 8(a) and (b) show the first positioning tool 5a and the second positioning tool 5b provided only on one side of the bathtub mounting pan 2 and the washing area pan 3. The first positioning tool 5a and the second positioning tool 5b are also provided on the other side of the bathtub mounting pan 2 and the washing area pan 3 in the same manner as these figures, and are temporarily fixed by tightening the fixing screw 511. FIGS. 8(a) and (b) show the first positioning tool 5a and the second positioning tool 5b attached to the side of the arrow indicating the Z direction shown in FIG. 2. These installation positions are at one end side in the length direction of the dividing line L. Although not shown, the first positioning tool 5a and the second positioning tool 5b are similarly installed at the joint portion of the bathtub mounting pan 2 and the washing area pan 3 located at the other end side in the length direction of the dividing line L.

[0063] Since the first positioning tool 5a and the second positioning tool 5b have a symmetric shape, on the side not shown, which is opposite to the mounting side of each of the pans 2 and 3 shown in FIGS. 8(a) and (b), the first positioning tool 5a is attached to the bathtub mounting pan 2 side, and the second positioning tool 5b is attached to the washing area pan 3 side. Regarding the first positioning tool 5a and the second positioning tool 5b provided on both end sides of the dividing line L, the operation procedures during the positioning work are the same. Therefore, hereinafter, the explanation will be centered on the first positioning tool 5a and the second positioning tool 5b provided at the position of the arrow indicating the Z direction. Based on FIGS. 8(a), (b) and FIGS. 9(a), (b), the positioning method of the washing area pan 3 and the bathtub mounting pan 2 by the positioning tool 5 will be described.

[0064] With the positioning tool 5 attached to the divided waterproof pan 1a, when the screw member 512 is tightened, the square nut 513 comes into contact with the substrate portion 501, the rotation of the square nut 513 is suppressed, and the first positioning tool 5a is drawn toward the second positioning tool 5b side. Then, as shown in FIGS. 9(a) and 9(b), the positioning tool contact portions 506 of the first positioning tool 5a and the second positioning tool 5b are brought into contact with each other. Here, the weight of the washbasin pan 3 is heavier than that of the normal bathtub placement pan 2, and since the operator performs this operation from the side of the washbasin pan 3, the bathtub placement pan 2 is drawn toward the washbasin pan 3 side. Although not shown, the same operation is performed on the first positioning tool 5a and the second positioning tool 5b attached to the opposite side of the bathtub placement pan 2 and the washbasin pan 3 to draw the bathtub placement pan 2 toward the washbasin pan 3 side. In the example of the figure, the head of the screw member 512 is a cross hole, but since the head may be crushed during tightening and the driver may become unusable, a hexagonal hole, a square hole, or a plus-minus hole shape is preferable.

[0065] The position where the positioning tool contact portions 506 of the positioning tool 5 come into contact with each other is set to the positional relationship in the state before division of the washbasin side positioning portion 105a and the bathtub side positioning portion 105b as shown in FIGS. 3 and 4. By setting it in this way, since the formed positioning portion 105 before separation is used as a dimensional reference, it is possible to accurately assemble the bathtub placement pan 2 and the washbasin pan 3 and install them accurately at the target position.

[0066] The connecting member 4 is arranged in the gap between the washbasin pan 3 and the bathtub placement pan 2 as shown in FIGS. 10(a) and 10(b). Although not shown in the figure, the connecting member 4 is fixed to the bathtub side cut surface 202 using screws. A bathtub side waterproof material 403 is interposed between the bathtub side cut surface 202 and the connecting member 4 to enhance the watertightness. A washbasin side waterproof material 402 is interposed between the washbasin cut surface 302 and the connecting member 4, and by drawing the bathtub placement pan 2 toward the washbasin pan 3 side with the positioning tool 5, the washbasin side waterproof material 402 can be compressed in the thickness direction. That is, the waterproofing materials 402 and 403 can be clamped between the bathtub placement pan 2 and the washbasin pan 3. More specifically, the waterproofing material 402 can be clamped between the bathtub-side cut surface 202 and the washbasin-side cut surface 302. Note that the connecting member 4 may be fixed toward the washbasin-side cut surface 302 to compress the bathtub-side waterproofing material 403.

[0067] The bathtub-side waterproofing material 403 and the washbasin-side waterproofing material 402 may be formed of natural rubber, synthetic rubber, a foaming material of closed-cell type, etc., and may be made compressible. Also, an adhesive may be applied to the back surface of such a base material. Further, it may be in the form of a tape to which a release paper (release film) or the like for protecting the adhesive is attached. These bathtub-side waterproofing material 403 and washbasin-side waterproofing material 402 may be provided over the entire length of the bathtub-side cut surface 202 and the washbasin-side cut surface 302.

[0068] As described above, according to this embodiment, the washbasin pan 3 and the bathtub placement pan 2 of the divided waterproof pan 1a obtained by cutting and separating the waterproof pan 1 can be assembled at accurate positions. Also, this assembly work can be carried out by a simple operation of using the positioning tools 5a and 5b and tightening the screw member 512. Furthermore, when the positioning tool 5 is retracted, the bathtub-side waterproofing material 403 or the washbasin-side waterproofing material 402 can be compressed in the thickness direction, and it is possible to improve the watertightness at the joint portion between the bathtub placement pan 2 and the washbasin pan 3. As shown in FIGS. 10(a) and (b), the contact portions 506 and 506 are butted against each other in a state where the bathtub-side waterproofing material 403 or the washbasin-side waterproofing material 402 is compressed in the thickness direction. In this state, the positioning portion 105b of the bathtub placement pan 2 and the positioning portion 105a of the washbasin pan 3 are at the same interval as before cutting shown in FIG. 3(b), so the washbasin pan 3 and the bathtub placement pan 2 are assembled at accurate positions. Note that each configuration and combination in the above-described embodiment is an example, and additions, omissions, substitutions, and other changes of the configuration are possible without departing from the spirit of the present invention.

Explanation of Reference Numerals

[0069] 1…Waterproof pan, 1a…Divided waterproof pan, L…Division line, 101…Dike part, 102…Ridge body, 102a…Ridge body on the washbasin pan side, 102b…Ridge body on the bathtub placement pan side, 103…Outer edge part (outer peripheral edge part), 103a…Outer peripheral wall part, 103b…Wall placement part, 103c…Outer wall, 103d…Support plate part, 103e…Inner wall, 105…Positioning part, 105a…Positioning part on the washbasin side, 105b…Positioning part on the bathtub side, 2…Bathtub placement pan, 201…Bathtub side dike part, 202…Bathtub side cut surface, 203…Bottom wall, 205…Drainage port forming part, 206…Inclined wall, 3…Washbasin pan, 301…Washbasin side dike part, 302…Washbasin side cut surface, 303…Bottom wall, 305…Drainage port forming part, 306…Inclined wall, 4…Connecting member, 401…Connecting member end part, 402…Waterstop material on the washbasin side, 403…Waterstop material on the bathtub side, 5…Positioning tool, 5a…Second positioning tool, 5b…First positioning tool, 501…Substrate part, 502…Upper lateral protruding part, 503…Lower lateral protruding part, 504…Peripheral wall contact part, 505…Positioning part contact piece, 506…Positioning tool contact part, 507…Tapping screw hole, 508…Through hole, 509…Auxiliary fixing hole, 510…Rotation suppressing part, 511…Fixing screw, 512…Screw member, 513…Square nut, 6…Bathroom unit, 601…Door, 602…Wall panel, 603…Ceiling, 604…Bathtub, 605…Bathtub apron, 606…Faucet.

Claims

1. A waterproof pan in which a bathtub placement pan and a washbasin pan are connected via a dike portion, Positioning portions are respectively formed on the outer peripheral wall portions of the bathtub placement pan and the washbasin pan at both ends of a dividing portion that divides the bathtub placement pan and the washbasin pan along the dike portion. The bathtub placement pan and the washbasin pan are connected via a positioning tool installed between the opposed positioning portions with their respective positioning portions opposed to each other, and the positioning portions of the bathtub placement pan and the washbasin pan have a support plate portion extending outward from the upper end of the outer peripheral wall portion and an outer wall extending upward from the tip of the support plate portion, The positioning tool has a substrate portion that makes surface contact with the outer surface of the outer wall, a lower laterally protruding portion protruding laterally from the lower portion of the substrate portion, a peripheral wall abutting portion extending downward from the tip of the lower laterally protruding portion, a positioning tool abutting portion extending in a direction perpendicular to the substrate portion, and an upper laterally protruding portion protruding laterally from the upper portion of the substrate portion, With respect to the positioning portion of the bathtub placement pan, the substrate portion is brought into surface contact with the outer surface of the outer wall of the bathtub placement pan, the lower surface of the upper laterally protruding portion is brought into contact with the upper surface of the outer wall of the bathtub placement pan, the peripheral wall abutting portion is abutted against the outer surface of the outer peripheral wall portion of the bathtub placement pan, and a fixing screw passing through a screw hole formed in the upper laterally protruding portion is pressed against the upper surface of the support plate portion to mount the positioning tool, With respect to the positioning portion of the washbasin pan, the substrate portion is brought into surface contact with the outer surface of the outer wall of the washbasin pan, the lower surface of the upper laterally protruding portion is brought into contact with the upper surface of the outer wall of the washbasin pan, the peripheral wall abutting portion is abutted against the outer surface of the outer peripheral wall portion of the washbasin pan, and a fixing screw passing through a screw hole formed in the upper laterally protruding portion is pressed against the upper surface of the support plate portion to mount the positioning tool, The waterproof pan is characterized in that a screw member passing through a positioning tool contact portion formed on the positioning tool attached to the positioning portion of the bathtub placement pan and a positioning tool contact portion formed on the positioning tool attached to the positioning portion of the washbasin pan connects the bathtub placement pan and the washbasin pan.

2. The waterproof pan according to claim 1, wherein the bathtub placement pan and the washbasin pan are a bathtub placement pan and a washbasin pan that are separated from an integrally formed object along a dividing line.

3. On each of the positioning tools attached to the washbasin pan and the positioning tools attached to the bathtub placement pan, a positioning tool contact portion that faces in the state of attachment of these positioning tools to the washbasin pan and the bathtub placement pan is formed. In the state of attachment of the positioning portion of the washbasin pan and the bathtub placement pan to these positioning tool contact portions, opposing through holes are formed. A screw member is inserted through these opposing through holes to connect the positioning tool contact portions to each other. The waterproof pan according to claim 1 or claim 2, characterized in that the positioning tool attached to the washbasin pan and the positioning tool attached to the bathtub placement pan are connected by the screw member.

4. The waterproof pan according to any one of claims 1 to 3, characterized in that a water stop material is provided between the bathtub placement pan and the washbasin pan, and the water stop material is sandwiched between the bathtub placement pan and the washbasin pan by tightening the screw member.

5. The waterproof pan according to claim 2, or claim 3 that cites claim 2, or claim 4 that cites claim 2, characterized in that the positioning tools attached to the washbasin pan and the positioning tools attached to the bathtub placement pan are symmetric in shape, and the positioning tools attached to the washbasin pan and the positioning tools attached to the bathtub placement pan can be attached to either the bathtub placement pan or the washbasin pan located at both ends of the dividing line.

6. A groove-shaped wall placement part is formed on the outer peripheral part of the bathtub placement pan and the outer peripheral part of the washbasin pan, and on the outer peripheral part of the bathtub placement pan and the outer peripheral part of the washbasin pan corresponding to the position in contact with the dividing line, outer walls that also serve as a part of the wall placement part are respectively formed, and the positioning tool is installed so as to be in contact with the outer wall. The waterproof pan according to claim 2, or claim 3 that cites claim 2, or claim 4 that cites claim 2, or claim 5 that cites claim 2.

7. The waterproof pan according to claim 6, characterized in that the positioning part is constituted by a positioning piece extending from a part of the outer wall in a direction intersecting the outer wall.

8. A bathroom unit, characterized by comprising the waterproof pan according to any one of claims 1 to 7.

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