Bathroom floor structure and bathroom

Abstract

To provide a bathroom floor structure capable of securing a required drainage slope without deepening a drainage pit structure.SOLUTION: A bathroom floor structure comprises a frame, a drainage pit structure 20, and a floor laying body 30 installed on the frame on at least one side of the drainage pit structure. A bottom portion 21 of the drainage pit structure has drain opening forming portions at two locations spaced apart from a longitudinal center thereof and also spaced apart from both longitudinal ends thereof, and one or a plurality of drain openings 22 are formed in each of the drain opening forming portions. A drainage slope of the bottom portion of the drainage pit structure has a crest portion 24 disposed between the two drain opening forming portions and two trough portions 23 respectively disposed at the two drain opening forming portions. The bottom portion of the drainage pit structure has two first regions 21x between both longitudinal ends and the two trough portions and two second regions 21y between the crest portion and the two trough portions, and the first regions and the second regions respectively have drainage slopes directed toward the drain openings.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a bathroom floor structure and a bathroom equipped with this bathroom floor structure. [Background technology]

[0002] In a typical bathroom in a detached house, the bathtub capacity is about 250L, the number of baths per day is one to several times depending on the number of people living in the house, the bathtub drain time is about 6 minutes, and the drainage flow rate is about 40L per minute. In contrast, large bathrooms for care facilities and the like require specifications such as a bathtub capacity of around 600 liters, around 10 baths per day, a bathtub drain time of around 2 minutes, and a drainage flow rate of around 300 liters per minute.

[0003] The floor structure of a large bathroom disclosed in Patent Document 1 has a drainage pit structure that extends across the width of the bathroom, located in the center of the bathroom's depth, with floor coverings located on both sides of the drainage pit structure. The top surface of the floor covering, i.e., the bathroom floor, has a drainage slope toward the drainage pit structure. The bottom of the drainage pit structure has a drain outlet and two drainage slopes toward the drain outlets. An underfloor drainage structure is connected to the drain outlets. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2020-59994 Summary of the Invention [Problem to be solved by the invention]

[0005] In Patent Document 1, a drain outlet is formed at a position off the longitudinal center of the drain pit structure. This has the advantage that when a bathtub is installed at the longitudinal center of the drain pit structure, the drain outlet is located away from the bathtub, making cleaning and inspection of the drain outlet easier. However, one of the two drainage slopes at the bottom of the drain pit structure must be long. The drainage slope of the drain pit structure is set to, for example, 1 / 50, but the depth of the drainage pit structure must be increased in proportion to the increase in the drainage slope. This increase in the depth of the drain pit structure reduces the drainage slope of the underfloor drainage structure. If the drainage slope is made gentler to avoid this reduction in the drainage slope of the underfloor drainage structure, wastewater from the bathtub will stagnate in the drain pit structure, resulting in a decrease in drainage function. The above-mentioned inconvenience becomes more pronounced when the size of the drainage pit structure is increased as the bathroom becomes larger. [Means for solving the problem]

[0006] In order to solve the above problem, the bathroom floor structure of the present invention comprises a drainage pit structure extending linearly and a floor covering installed on at least one side of the drainage pit structure, The bottom of the drainage pit structure has drainage outlet forming portions at two locations spaced apart from the longitudinal center and from both longitudinal ends, each of which has one or more drainage outlets formed therein, and the drainage gradient of the bottom of the drainage pit structure has a peak portion located between the two drainage outlet forming portions and two valley portions located at each of the two drainage outlet forming portions, and the bottom of the drainage pit structure has two first regions between the longitudinal ends of the drainage pit structure and the two valley portions, and two second regions between the peak portions and the two valley portions, and the first and second regions each have a drainage gradient toward the drainage outlet.

[0007] With this configuration, since the drain outlet is away from the center of the drain pit structure, the drain outlet can be cleaned and inspected even if the bathtub is installed in the center of the drain pit structure. Also, since the drain pit structure has four drainage slopes, even if the drain outlet is away from the center or the size of the drain pit structure increases, the required drainage slopes can be secured without deepening the drain pit structure, and good drainage function can be maintained.

[0008] Preferably, the peak of the drainage slope is located in the center of the drainage pit structure, and the total length of the two second regions is longer than the width of the bathtub to be installed in the bathroom. With this configuration, even if the bathtub is placed in the center of the drainage pit structure, it is possible to reliably prevent the bathtub from being placed directly above the drain outlet, thereby preventing any hindrance to cleaning or inspection of the drain outlet.

[0009] In one embodiment, the drainage pit structure comprises two pit sections, the two pit sections being joined at the crest of the drainage slope. Preferably, the two pit segments of the drainage pit structure have the same shape. This configuration reduces the cost of molding the drainage pit structure.

[0010] The bathroom of the present invention comprises the bathroom floor structure and a bathtub that straddles the drainage pit structure of the bathroom floor structure and is installed on the floor covering on both sides of the drainage pit structure, and is characterized in that the bathtub is installed away from the bathroom wall without covering the top of the drain outlet. [Effects of the Invention]

[0011] According to the present invention, even if the bathtub is installed in the center of the drainage pit structure, cleaning and inspection of the drain outlet is not hindered, and even if the drain outlet is separated from the drainage pitch or even if the size of the drainage pit structure is longer, the necessary drainage gradient can be secured without deepening the drainage pit structure. [Brief explanation of the drawings]

[0012] [Figure 1] A cross-sectional view of a bathroom floor structure related to the first embodiment of the present invention. [Figure 2] This is a plan view showing the frame of the bathroom floor structure. [Figure 3] FIG. 3 is a plan view showing the state in which the drainage pit structure is installed on the stand of FIG. 2. [Figure 4] FIG. 4 is a plan view showing a state in which a floor panel is installed on the stand of FIG. 3. [Figure 5] (A) is a plan view showing the completed bathtub floor structure by installing a surface sheet on the floor panel, and the bathtub placed in the center of the drainage pit structure is shown in imaginary lines. (B) is a cross-sectional view taken along the arrow BB in (A), showing an exaggerated drainage slope at the bottom of the drainage pit structure. [Figure 6] 10 is a front view showing a connecting flange for connecting the pit segments of the drainage pit structure. FIG. [Figure 7] FIG. 10 is a cross-sectional view showing the pit dividers connected via a connecting flange. [Figure 8] (A) is a view equivalent to Fig. 3 of a bathroom floor structure according to a second embodiment of the present invention. (B) is a cross-sectional view taken along the arrow BB in Fig. (A), showing an exaggerated drainage slope at the bottom of the drainage pit structure. [Figure 9] (A) is a view equivalent to Fig. 3 of a bathroom floor structure according to a third embodiment of the present invention. (B) is a cross-sectional view taken along the arrow BB in Fig. (A), showing an exaggerated drainage slope at the bottom of the drainage pit structure. [Figure 10] FIG. 10 is a plan view for schematically explaining a method for forming a drainage pit structure larger in size than that of the first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] A bathroom floor structure constituting a first embodiment of the present invention will be described below with reference to Figures 1 to 7. The bathroom in this embodiment is a relatively large bathroom used, for example, in a nursing home. This bathroom is larger than bathrooms in typical detached houses, with a bathtub capacity of approximately 600 L, bathing times of approximately 10 times per day, a bathtub draining time of approximately 2 minutes, and a drainage flow rate of approximately 300 L per minute.

[0014] As shown in Figure 1, the bathroom floor structure 1 has as its main components a frame 10 supported on a floor slab surface 2 by a number of pillars 3, a drainage pit structure 20 installed on the frame 10, floor covering bodies 30 installed on the frame 10 on both sides of the drainage pit structure 20, and an underfloor drainage structure 40 that drains water from the drainage pit structure 20.

[0015] The drainage pit structure 20 extends linearly in a direction perpendicular to the plane of FIG. 1, defining a linear drainage pit (drainage channel) with an open top. The bottom 21 of the drainage pit structure 20 has two drain outlets 22 formed at two longitudinally spaced locations. The underfloor drainage structure 40 has drain traps 41 connected to each drain outlet 22 and drain pipes 42 connected to the drain traps 41. The drainage pit structure 20 has a capacity capable of temporarily holding a large amount of drainage (e.g., approximately 600 L) from a bathtub. The drain traps 41 and drain pipes 42 connected to the two drain outlets 22, respectively, can rapidly drain water that has accumulated in the drainage pit structure 20 in, for example, approximately two minutes. The support pillar 3 consists of a support body with a threaded head and a plate-shaped, specifically, disk-shaped, support leg attached to the leg side of the support pillar body. The support pillar body is fixed to the base 10 with a nut. The height of the base can be adjusted by adjusting the position of the nut on the support pillar body.

[0016] Below, we will provide a detailed overview of each component. <Overview of the stand> As shown in FIG. 2, the rack 10 is placed throughout the bathroom. In the following description, the bathroom width direction (indicated by the symbol W in the figure) and the bathroom depth direction (indicated by the symbol D in the figure) are defined based on the bathroom entrance 4. The rack 10 is formed, for example, into a rectangular or lattice shape in plan view by connecting horizontally extending metal beams 11-14 with square cross sections. More specifically, the rack 10 includes two long beams 11 located at both ends of the bathroom depth direction and extending along the bathroom width direction, two long beams 12 located at both ends of the bathroom width direction and extending along the bathroom depth direction, two long beams 13 located in the center of the bathroom depth direction and extending along the bathroom width direction, and numerous short beams 14 spanning between the beams 11 and 13. An installation space 15 for the drainage pit structure 20 is formed between the two beams 13 of the rack 10. In FIG. 2, the columns 3 that support the connecting portions between the beams 11 to 14 of the frame 10 and the intermediate portions of the beams 11 to 14 are indicated schematically by black circles.

[0017] <Outline of drainage pit structure> As shown in Figure 3, a drainage pit structure 20 is installed in the installation space 15 of the stand 10. The drainage pit structure 20 is made of a resin molded product and extends linearly across the entire width of the bathroom. The drainage pit structure 20 is formed by connecting two identical pit segments 20A. Each pit segment 20A has two mounting frame portions 25 extending in the width direction of the bathroom and one mounting frame portion 26 extending in the depth direction of the bathroom.

[0018] <Connection of pit division bodies> The drainage pit structure 20 is constructed by connecting the adjacent ends of two pit dividers 20A. More specifically, as shown in FIGS. 6 and 7, connecting flanges 27 are formed on the adjacent ends of the pit dividers 20A, and these connecting flanges 27 are connected by bolts with a watertight material 28 made of EPDM (ethylene propylene diene rubber) or the like sandwiched therebetween. In FIGS. 2 to 5, the connecting portion of the pit dividers 20A is indicated by the reference numeral 29. This connecting portion 29 is located at a position (the same position in the longitudinal direction of the drainage pit structure 20) corresponding to two struts 3 (the struts 3 connecting the centers of the two beams 13 of the frame 10 to the beam 14; see FIG. 2), so that the connecting portion 29 can be firmly supported.

[0019] As shown in Figure 1, the two mounting frame portions 25 of each pit segment 20A are respectively attached to two beams 13 of the frame 10. Steps 25a are formed in the two mounting frame portions 25, and gratings 50 are removably installed on these steps 25a to cover the internal space (drainage pit; drainage groove) of the drainage pit structure 20. The mounting frame portions 26 of the two pit segments 20A are attached to the centers of the two beams 12 of the frame 10.

[0020] <Outline of floor installation body> As shown in Figures 1, 4, and 5(A), two floor laying bodies 30 are installed on the frame 10 on both sides of the drainage pit structure 20 in the bathroom depth direction. Each floor laying body 30 includes a plurality of floor panels 31 (for example, four in Figure 1) arranged in the extension direction of the drainage pit structure 20 (the width direction of the bathroom), and a surface sheet 32 ​​laid across the upper surfaces of these plurality of floor panels 31. The floor panel 31 has a structure in which a foamed resin panel body is sandwiched between steel plates on the top and bottom, but it may also be an FRP plate, waterproof pan, etc.

[0021] The edges of the floor panel 31 are fixed to the beams 11 to 13 of the frame 10. As shown in Figure 1, the edge of the surface sheet 32 ​​on the drainage pit structure 20 side is attached to the upper surface of the frame 25 of the drainage pit structure 20 via a watertight material. The floor surface of the floor covering body 20 (the upper surface of the surface sheet 32) has a drainage gradient toward the drainage pit structure 20 along the depth direction of the bathroom.

[0022] <Location and slope of drainage outlet of drainage pit structure> 5(A) and (B), the bottom 21 of each pit divider 20A has one drain port forming portion, and one drain port 22 is formed in this drain port forming portion. Each drain port 22 (drain port forming portion) is spaced apart from both longitudinal ends of the pit divider 20A. As a result, the drain pit structure 20 has two drain ports 22 (drain port forming portions), and each drain port 22 is spaced apart from the longitudinal center of the drain pit structure 20 (the connecting portion 29 of the pit divider 20A) and from both longitudinal ends of the drainage pit structure 20.

[0023] The bottom 21 of each pit divider 20A has a first region 21x on the outside in the longitudinal direction of the drainage pit structure 20 and a second region 21y on the inside, with the drainage outlet 22 as the boundary. The first region 21x and the second region 21y have a drainage gradient toward the drainage outlet 22. As a result, as shown in FIG. 5(B), the bottom 21 of the drainage pit structure 20 has a valley 23 at the boundary (the drainage outlet forming portion) between the first region 21x and the second region 21y, and a peak 24 at the boundary (the connecting portion 29 of the pit dividers 20A) between the second regions 21y of the two pit dividers 20A (i.e., the center of the drainage pit structure 20).

[0024] As shown by the imaginary lines in Figure 5(A), the bathtub 60 straddles the drainage pit structure 20 and is installed on the floor coverings 30 on both sides of it. Even if the bathtub 60 is installed away from the bathroom wall in the center of the drainage pit structure 20, the two drain outlets 22 are spaced apart from the center of the drainage pit structure 20, so there is no hindrance to inspecting or cleaning the drain outlets 22. In this embodiment, the total length of the two inner second regions 21y is longer than the width of the bathtub 60, so the two drain outlets 22 can be placed sufficiently far away from the bathtub 60. Therefore, the bathtub 60 is not positioned above (covers) the drain outlets 22, which reliably eliminates the possibility of hindrance to inspecting or cleaning the drain outlets 22.

[0025] <Drainage function of the drainage pit structure> Water drained from the bathtub 60 enters the drainage pit structure 20, flows along the drainage gradient of the first area 21x and the second area 21y, reaches the drain outlet 22, and is further drained by the underfloor drainage structure 40. Even if the bathroom is large and the drainage pit structure 20 is long, its bottom 21 has a peak 24 with a drainage slope, and has valleys 23 (drainage outlet forming portions) on both sides of this peak 24, as well as a total of four areas 21x, 21y with a drainage slope, so that the required drainage slope (for example, a drainage slope of 1 / 50 or more) can be secured without making the drainage pit structure 20 deeper, and large amounts of wastewater can be smoothly drained from the drainage outlet 22.

[0026] Next, another embodiment of the present invention will be described. In the following description, components corresponding to those in the preceding embodiment are given the same reference numerals and detailed description thereof will be omitted. Second Embodiment In the second embodiment shown in Figure 8, the bathroom width dimension is larger than in the first embodiment, and accordingly the drain pit structure 20 is formed longer. Two drain outlets 22 are formed in the drain outlet forming portion (valley portion 23) at the boundary between the outer region 21x and the inner region 21y of the pit divider 20A.

[0027] Third Embodiment The drainage pit structure 20 of the third embodiment shown in Figure 9 is even longer than that of the second embodiment. Similar to the second embodiment, the drainage pit structure 20 has a peak 24 of the drainage slope located in the center, two first regions 21x and two second regions 21y, and two drainage outlets 22 formed in each of two valleys 23 of the drainage slope.

[0028] In the third embodiment, the position of the support pillar 3 (not shown in FIG. 9) supporting the frame 10 is shifted in the longitudinal direction with respect to the center position (the position of the peak 24 of the drainage gradient) of the drainage pit structure 20. To accommodate this arrangement, this embodiment uses two pit division bodies 20B, 20C with different lengths and shapes, and the position of their connecting part 29 is aligned with the position of the support pillar 3.

[0029] In this embodiment, the connecting portion 29 is offset longitudinally from the position of the peak 24 of the drainage gradient. For example, the right-side pit divider 20B is longer than the left-side pit divider 20C, and has a right-side first region 21x, a right-side second region 21y, the peak 24 of the drainage gradient, and a portion 21y' of the left-side second region 21y. The left-side pit divider 20C has a left-side first region 21x and a main portion 21y" of the left-side second region 21y.

[0030] In the third embodiment, pit division bodies of different lengths may be used, and the connecting portions of the pit division bodies may be the crests of the drainage slope, and these connecting portions may be located at positions corresponding to the supports. In this case, each pit division body has a first region and a second region.

[0031] <Fourth embodiment> The fourth embodiment shown in Figure 10 shows a method for low-cost hand layup molding of drainage pit structures of different lengths using a common mold. For example, when molding a pit segment 20A, a divided main mold section 101 and an end mold section 102 are molded together. When molding a longer pit segment 20D, a nest 103 is interposed between the mold sections 101 and 102. The nest 103 molds an additional region that is continuous with the first region 21x molded by the main mold section 101 and has the same drainage gradient as the first region 21x.

[0032] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the invention. The drain pit structure may be undivided. A bedding body may be provided on only one side of the drainage pit structure. The peak of the drainage slope of the drainage pit structure may be located at a position offset from the center of the drainage pit structure in the longitudinal direction. The bathroom floor structure of the present invention can be applied not only to large bathrooms such as those in nursing homes, but also to bathrooms in detached houses, apartment buildings, and other buildings. [Industrial Applicability]

[0033] The present invention can be applied to large bathrooms, such as those in nursing homes. [Explanation of symbols]

[0034] 10 Mounting stand 20 Drainage pit structure 20A, 20B, 20C, 20D Pit division body 21 Bottom 21x 1st area 21y 2nd area 22 Drain 23 Valley of drainage slope 24 Drainage slope summit 29 Connecting part 30 Floor covering

Claims

1. A drainage pit structure extending linearly and a floor covering installed on at least one side of the drainage pit structure, The bottom of the drainage pit structure has drainage port forming portions at two locations spaced apart from the center in the longitudinal direction and from both ends in the longitudinal direction, and one or more drainage ports are formed in each of the drainage port forming portions; The drainage slope of the bottom of the drainage pit structure has a peak portion disposed between two drainage outlet forming portions and two valley portions disposed at the two drainage outlet forming portions, respectively; A bathroom floor structure characterized in that the bottom of the drainage pit structure has two first regions between the longitudinal ends of the drainage pit structure and the two valleys, and two second regions between the peak and the two valleys, and the first and second regions each have a drainage slope toward the drain outlet.

2. The bathroom floor structure described in claim 1, characterized in that the peak of the drainage slope is located in the center of the drainage pit structure, and the total length of the two second areas is longer than the width of the bathtub to be installed in the bathroom.

3. The bathroom floor structure described in claim 1, characterized in that the drainage pit structure has two pit divisions, and the two pit divisions are connected at the peak of the drainage slope.

4. The bathroom floor structure according to claim 1, characterized in that the two pit divisions of the drainage pit structure have the same shape.

5. A bathroom floor structure according to claim 1, and a bathtub installed on the floor coverings on both sides of the drainage pit structure and spanning the drainage pit structure of the bathroom floor structure, The bathroom is characterized in that the bathtub is installed away from the bathroom wall without covering the upper part of the drain outlet.

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