JP4548032B2 - Floor drainage mounting structure - Google Patents

Description

  The present invention relates to a floor drain outlet mounting structure, and in particular, a drain outlet connected from a drain outlet of a bathtub installed on the waterproof pan to a drain trap provided below the waterproof pan is fixed to the waterproof pan. It relates to the mounting structure.

  In unit baths adopted in ordinary houses, drainage from the bathtub is usually led to a drain trap installed on the back of the waterproof pan via a floor drain provided in the waterproof pan on which the bathtub is placed, After being combined with the wastewater from the washing place, it is discharged to the outside through the drainage main pipe.

  Although there are various types of bathtub drains (see, for example, Patent Document 1), FIG. 8 shows an example of the configuration of a conventional drain. First, a drain plug 141 is provided on the bathtub 123 side. The drain plug 141 is configured by fitting a sealing lid 142 to a drain fitting 141 attached to an opening formed in the lowest part of the bathtub. The sealing lid 142 moves up and down through an operation release by operating an operation button (not shown), whereby the drain plug 141 is opened and closed. Instead of the sealing lid 142, many rubber stoppers connected by a chain or the like are also used.

  On the other hand, a drainage elbow 130 connected to a drainage unit (not shown) is brought into contact with an opening provided in the waterproof pan 120 from below, and from above, a fastening flange 134 is abutted so that the waterproof pan 120 is sandwiched therebetween. Established. The drainage elbow 130 has, at its end, a female screw portion 130b having a female screw threaded on its inner periphery, and a flange surface 130a extending in the horizontal direction from the upper end of this female screw portion 130b. On the other hand, a male screw is threaded on the outer periphery of the male screw part 134 a of the tightening flange 134. The drain elbow 130 is fixed to the waterproof pan 120 by screwing the male screw portion 134a relative to the female screw portion 130b and pressing the opening of the waterproof pan 120 from above and below. At this time, the water tightness is ensured by the U-shaped packing 133 fitted around the opening of the waterproof pan 120.

  The drainage elbow 130 thus installed in the waterproof pan 120 and the drainage plug 140 installed in the bathtub 123 are connected by a drain valve cover 127 placed and engaged on the fastening flange 134, and the bathtub drainage is externally connected. Let it drain into a drain trap without leaking.

(For example, refer to Patent Document 1).
JP 2003-56036 A (FIG. 3)

  By the way, this waterproof pan is usually a sheet-like unsaturated because it is necessary to support the weight of the bather in the washing area and the weight of the hot water stored in the bathtub and the bathtub in addition to the bather in the bathtub mounting section. Strength and hardness above a certain level, such as those formed by compression molding using sheet molding compound (SMC), which is a polyester resin molding material, and those formed using thermosetting plastic (FRP) blended with fiber reinforcement (JIS A 4419).

  Therefore, since the opening for attaching the drainage elbow is also formed in advance specialized for only a specific type of drainage elbow, it is difficult to attach other drainage elbows. For example, since a sufficient height cannot be secured between the waterproof pan and the building floor, it may be desired to employ a drainage elbow that is smaller than the set one. On the contrary, when the height between the waterproof pan and the building floor is large, there is a case where the connection position of the drain elbow may be lowered in order to adjust the drain gradient. However, it is difficult to cope with such a case with the configuration of the conventional drainage port.

  The present invention has been made in consideration of the above-described circumstances, and an object thereof is to provide a floor drain outlet mounting structure capable of mounting various types and sizes of drain elbows to different types of waterproof pans. It is.

In order to solve the above-described problem, the floor drain outlet mounting structure according to the present invention is provided on the lower surface around the opening provided in the lower part of the bathtub of the waterproof pan constituting the floor of the unit bath as described in claim 1. is To設has a smaller diameter opening than the opening of the waterproof pan, a drain elbow to derive the tub drainage into the drain trap, formed of a plate material in which the opening of the opening and substantially the same diameter of the waste water elbow is bored And a lower plate interposed between the drain elbow and the back surface of the waterproof pan, and a plate material having an opening substantially the same diameter as the drain elbow and mounted on the surface of the waterproof pan. an upper plate which is location, in which the top of the upper plate through the upper and lower plates and a clamping flange is clamped against the waste water elbow.

  Preferably, the upper plate is formed by stepping down the perforated opening by a height smaller than the height around the opening of the waterproof pan.

  Alternatively, as defined in claim 3, the lower plate is formed by stepping around the perforated opening, and the upper plate is formed around the perforated opening by the opening of the waterproof pan. It may be formed by stepping down by a height smaller than the sum of the surrounding height and the stepping height of the lower plate.

  According to the floor drain outlet mounting structure according to the present invention, various types and sizes of drain elbows can be mounted on different types of waterproof pans.

  According to the present invention, even if a material that is flexible to some extent is used for the waterproof pan, the floor drain outlet can be firmly fixed at a predetermined position without causing deformation of the waterproof pan.

  An embodiment of a mounting structure for a floor inspection port of a unit bath according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is an exploded perspective view showing an overall outline of a waterproof pan 1 of a unit bath provided with a floor inspection port 26 according to the present invention. FIG. It is sectional drawing seen from A direction. The waterproof pan 1 shown in this embodiment is broadly divided into a washing place side floor 10 and a bathtub side floor 20.

  The washroom side floor 10 is formed of FRP or SMC, and the three outer edges other than the side facing the bathtub side floor 20 are formed at the same level so that a wall panel (not shown) can be placed, and faces the bathtub side floor 20. A downward slope is formed toward the drain recess 14 to which the trap unit 12 provided at the center of the side is attached. A trap cover 13 is placed on the drain recess 14 for blinding. The washing place side floor 10 is fixed on a washing place side gantry 11 having a plurality of legs that are rigidly joined to each other and whose level is adjustable.

  The bathtub-side floor 20 is formed of a heat insulating material obtained by foaming a plastic material such as expanded polypropylene (EPP) or expanded polyethylene (EPE), and prevents the leakage of water, and the heat of the hot water stored in the bathtub is Prevents conduction and radiation from the back of the bathtub. The bathtub-side floor 20 includes a bottom portion that is located on the bottom surface of the bathtub 23 and side portions that are erected up to the height of the upper portion of the bathtub in three directions excluding the side facing the washing floor.

  Two floor inspection ports 26, 26 are provided at both ends of one side of the bathtub side floor 20 facing the washing place side floor 10. One of the floor inspection ports 26 functions as an inspection port for inspecting the situation under the floor, and the other functions as an insertion hole such as a water supply pipe or a hot water supply pipe to the bathtub 23. These are properly used according to the L type and R type of the bathtub 23. In addition, a hole in which the drain valve cover 27 is fitted is provided at the center of the side. The drain valve cover 27 connects the drain port of the bathtub and the bathtub-side drain elbow 30 of the trap unit 12.

  The bathtub 23 is placed on the bottom of the bathtub-side floor 20 as the outer heat insulating layer via the bathtub bottom surface heat insulating material 24 as the inner heat insulating layer, which is molded from a material having heat retaining properties. Here, the bathtub bottom surface heat insulating material 24 is in contact with the entire bottom surface of the bathtub 23, and the bottom of the bathtub side floor 20 is formed in contact with the entire bottom surface of the bathtub bottom surface heat insulating material 24. Therefore, the weight of the bathtub 23, the pooled hot water, and the bather is not supported on the waterproof pan by a plurality of support legs as in the conventional bathtub, but is supported by the surface, so that per unit area The load is not so large, and even EPP or EPE can sufficiently support this weight.

  Thus, since the bathtub side floor 20 supports the load of the bathtub 23 and the like over the entire surface, it is necessary to receive this load on the back surface of the bathtub side floor 20 as wide as possible. Are transmitted to the bathtub-side pedestal 21 through a plurality of bathtub-side receiving frames 22.

  On the side surface of the bathtub 23, a bathtub side heat insulating material 28, which is molded from a material having heat insulation properties, is attached as an inner heat insulating layer to further enhance the heat insulating performance.

  The bath apron 25 that covers the side surface of the washing floor 10 of the bathtub 23 and is detachable is made of polypropylene (PP), polystyrene (PS), ABS resin, or the like, as well as the FRP and SMC. It is formed, and on the back side, the same material as the bathtub side floor 20 or expanded polystyrene (EPS) is lined and insulated. In order to facilitate access to the floor inspection port 26, a small bus apron 25a that can be easily attached and detached is formed separately on the end portion of the bus apron 25 that functions as the inspection port. .

  In this way, the wash floor side floor 10 and the bathtub side floor 20 are formed separately because of different materials, and the wash areas facing each other on the connected wash field side frame 11 and bathtub side frame 21 are connected. The side connection part 10a and the bathtub side connection part 20a are connected and integrated in a watertight manner, so that the waterproof pan 1 with no fear of water leakage is formed.

  3 is an enlarged view of the floor drain port 2 portion in FIG. 2, FIG. 4 is an enlarged view of part B, and FIG. 5 is an exploded perspective view of the floor drain port 2. As shown in FIG. In these drawings, the illustration of the bathtub 23 and the drain valve cover 27 is omitted for easy viewing.

  As shown in the figure, the floor drain port 2 according to the present embodiment includes a drain elbow 30, a lower plate 31, a floor drain port mounting portion 20b, an upper plate 32, a U-shaped packing 33, and a fastening flange 34. Is provided.

  The drainage elbow 30 has an internal thread portion 30b in which one end on the bathtub side floor 20 side is expanded upward and an internal thread is threaded on the outer periphery, and a flange surface 30a extends from the upper end to the outer horizontal direction. The other end of the drain elbow 30 is connected to the trap unit 12. A small groove 30c is formed in the flange surface 30a.

  The lower plate 31 has an approximately square plate center made of stainless steel or the like and an opening having the same size as the opening of the drainage elbow 30 and is in contact with the lower surface of the opening of the floor drainage port mounting portion 20b. Is done.

  The floor drain outlet mounting portion 20b is a recess provided at the lowest position of the bathtub-side floor 20, and an opening of substantially the same size as the opening of the drainage elbow 30 is drilled in the center of the plane, like the lower plate, An opening 20c is formed. When the bathtub-side floor 20 is formed of a heat-insulating material as in the present embodiment, the thickness around the opening 20c is somewhat reduced compared to other places because the drain elbow 30 needs to be accommodated. .

  The upper plate 32 has a substantially square plate made of stainless steel or the like in the middle of the lower plate 31 and has an opening having the same size as the opening of the drainage elbow 30. It is different in that it is stepped downward and the side surface side of the bathtub side floor 20 is slightly bent upward. The upper plate 32 is placed on the upper surface of the opening of the floor drain port mounting portion 20b.

  The U-shaped packing 33 is an annular water stop material having a substantially U-shaped cross section made of an elastomer or the like, and the upper plate 32 and the lower plate 31 are connected around the opening 20c of the floor drain port mounting portion 20b. Even if it is sandwiched and leaks water on the bathtub side floor 20, it is prevented from leaking onto the building floor. The U-shaped packing 33 is provided with a small annular ridge 33 a so as to be fitted into an annular small groove 30 c provided in the flange surface of the drainage elbow 30.

  The tightening flange 34 is formed of a short-end-open cylindrical male screw portion 34 a having a male screw threaded on the outer periphery thereof, and a flange portion 34 b extending substantially horizontally outward from the upper portion of the male screw portion 34 a. In cooperation with the flange surface 30a, the lower plate 31, the upper plate 32 and the U-shaped packing 33 are sandwiched.

  The floor drain port 2 according to the present embodiment is configured as described above, and the assembly thereof will be described below.

  First, the upper plate 33 is placed and bonded on the opening 20c of the floor drain port mounting portion 20b, and the lower plate 31 is abutted and bonded to the lower surface of the floor drain port mounting portion 20b. It is mounted on the periphery of the opening 20c of the floor drain port mounting portion 20b. The U-shaped packing 33 may be bonded.

  At this time, the outer end of the upper plate 33 is inserted under the protrusions 35 protruding from the floor drain port attachment portions 20b. If the load of the drain elbow 30 is applied to the inner end of the upper plate 32, a balance action may occur, and the upper plate 33 may fall off. However, since the outer end is locked by the projection 35, the falling is prevented. The

  As a result, at least the upper plate 33 and the lower plate 31 are integrated with the floor drain outlet mounting portion 20b, and this operation is performed in the factory. It can be performed in the same manner as in the case of attachment.

  From this state at the installation site, the flange surface 30a of the drainage elbow 30 is brought into contact with the lower surface of the floor drainage port mounting portion 20b, while the fastening flange 34 is suspended from the upper surface of the floor drainage port mounting portion 20b. The drainage elbow 30 is suspended from the floor drainage port mounting portion 20b by screwing the female screw portion 30a. At this time, as the male screw of the male screw portion 34a is screwed, the U-shaped packing 33 sandwiched between the flange portion 34b of the tightening flange 34 and the flange surface 30a of the drainage elbow 30 is pressed. Since the opening 20c sandwiched between the upper plate 32 and the lower plate 31 is also pressed, the drainage elbow 30 is securely fixed to the floor drainage port mounting portion 20b.

  In this case, as shown in FIG. 4, if the height h2 of the stepped side portion 32b of the upper plate 32 is set slightly smaller than the height h1 of the opening 20c before being pressed, the opening 20c is Unnecessary deformation can be prevented.

  Further, as shown in FIG. 4, misalignment can be prevented by fitting the convex strips 33 a of the U-shaped packing 33 to positions facing the concave grooves 30 c provided in the upper surface of the flange surface 30 a of the drainage elbow 30. Is done.

  In this manner, the flange portion 34b of the tightening flange 34 and the flange surface 30a of the drainage elbow 30 sandwich the upper plate 32 and the lower plate 31 sandwiched by the U-shaped packing 33 and directly sandwich the floor drain port attachment portion 20b. Therefore, the floor drain outlet can be firmly fixed at a predetermined position without causing deformation of the bathtub-side floor 20.

  Next, a modified example of the floor drain outlet mounting structure according to the present embodiment will be described with reference to FIG. In this modification, the bathtub side floor 20A is formed of a material such as FRP or SMC, and the upper opening of the drainage elbow 30A is slightly smaller than that of the drainage elbow 30 described above.

  Accordingly, the openings formed in the lower plate 31A and the upper plate 32A are also reduced. The diameters of the U-shaped packing 33A and the fastening flange 34A are also slightly smaller. As a result, a gap is generated between the end of the opening 20Ac of the bathtub side floor 20A and the fastening flange 34A, and an annular filler 36 formed of an elastomer or the like is fitted into the gap.

  In this way, it is possible to easily install drainage elbows of different types and sizes by simply replacing the lower plate and the upper plate having different opening sizes. That is, the lower plate and the upper plate have a function as a size adjuster of the drainage elbow to be installed.

  Next, another modification of the floor drain outlet mounting structure according to this embodiment will be described with reference to FIG. In this modification, the bathtub side floor 20A is formed of a material such as FRP or SMC, but the drainage elbow 30, the U-shaped packing 33, and the fastening flange 34 are the same as those shown in the embodiment.

  However, unlike the lower plate 31 shown in the embodiment as a flat plate, the lower plate 31B is formed by stepping downward around the opening by pressing or the like. Further, the height of the stepped side portion 32Bb of the upper plate 32B is formed larger than that of the upper plate 32 shown in the embodiment. Therefore, the top portion of the tightening flange 34 is positioned lower by the height of the stepped side portion 32Bb of the upper plate 32A, and the position of the drainage elbow is also lowered.

  In this way, it is possible to easily change the mounting height of the drainage elbow only by exchanging the upper plate and the lower plate with different heights on the stepped side portions. That is, the lower plate and the upper plate also have a function as a height adjuster of the drainage elbow to be installed.

  The embodiments described above are for illustrative purposes and do not limit the scope of the invention. Accordingly, those skilled in the art can employ embodiments in which each or all of these elements are replaced by equivalents thereof, and these embodiments are also included in the scope of the present invention.

The disassembled perspective view which shows the whole outline | summary of a waterproof pan provided with the attachment structure of the floor drain outlet which concerns on this invention. The longitudinal cross-sectional view of the waterproof pan which concerns on this embodiment. The figure which expanded the floor drain outlet part in FIG. The B section enlarged view in FIG. The exploded perspective view around the floor drain outlet concerning this embodiment. The figure which shows the 1st modification of the attachment structure of the floor drain outlet which concerns on this embodiment. The figure which shows the 2nd modification of the attachment structure of the floor drain outlet which concerns on this embodiment. The figure which shows the attachment structure of the conventional bathtub drainage member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Waterproofing pan 2 Floor drain outlet 10 Washing area side floor 10a Washing area side connection part 11 Washing area side mount 12 Trap unit 13 Trap cover 14 Drain recessed part 20, 20A Bath side floor 20a Bath side connection part 20b, 20Ab Floor drain opening attachment part 20c Opening Portion 21 Bathtub side frame 22 Bathtub side floor receiving frame 23 Bathtub 24 Bath bottom heat insulating material 25 Bath apron 25a Small bath apron 26 Inspection port 27 Drain valve cover 28 Bath side heat insulating material 30, 30A Drain elbow 30a Flange surface 30b Female thread portion 30c Concave Groove 31, 31A, 31B Lower plate 32, 32A, 32B Upper plate 32b, 32Bb Stepped side part 33, 33A U-shaped packing 33a Projection 34, 34A Tightening flange 34a Male thread part 34b Flange part 35 Projection 36 Filler

Claims (3)

A drainage elbow installed on the lower surface around the opening provided in the lower part of the bathtub of the waterproof pan constituting the floor of the unit bath, having an opening having a smaller diameter than the opening of the waterproof pan , and leading out the bathtub drainage to the drain trap ,
A lower plate that is formed of a plate material having an opening having substantially the same diameter as the opening of the drainage elbow, and is interposed between the drainage elbow and the waterproof pan back surface;
An upper plate that is formed of a plate material having an opening having substantially the same diameter as the opening of the drainage elbow, and is placed on the surface of the waterproof pan;
A tightening flange which is clamped against the waste water elbow over the upper plate through the upper and lower plates,
A floor drain outlet mounting structure characterized by comprising: The floor drain outlet mounting structure according to claim 1, wherein the upper plate is formed by stepping down the perforated opening by a height smaller than a height around the opening of the waterproof pan. . The lower plate is formed by stepping down the perforated opening, and the upper plate has a height around the opening of the waterproof pan and a stepped height of the lower plate around the perforated opening. The floor drain outlet mounting structure according to claim 1, wherein the floor drain outlet is formed by being stepped down by a height smaller than the sum of the two.

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