JP5099592B2 - Bathroom wash floor - Google Patents

Description

  The present invention relates to a bathroom floor.

Patent Documents 1 and 2 disclose bathroom washroom floors in which a base material made of FRP (Fiber Reinforced Plastic), a foam layer, and a surface layer made of a soft material are sequentially laminated and integrated.
JP 2002-017598 A JP 2001-245814 A

  In Patent Documents 1 and 2, the surface layer and the base material layer have different linear expansion coefficients. Therefore, when heat is applied to the washing floor, different shearing forces act on the boundary surfaces of the layers, which may cause peeling from the boundary surfaces of the layers. Because of this, each layer had to be bonded with a strong adhesive. In addition, since the base material and the surface layer are not directly laminated, there is a problem that when the user walks on the floor surface of the washing place, a shearing force is generated on the boundary surface of each layer, and peeling is likely to occur. .

  The present invention has been made in view of the above-mentioned problems, and provides a bathroom washroom floor in which the boundary surface of each layer is difficult to peel off without depending only on the adhesive strength of the adhesive.

  According to one aspect of the present invention, a rigid base material for supporting a load, a flexible surface layer laminated on the inner side of the bathroom from the base material, and a lamination between the base material and the surface layer. A wash floor of a bathroom comprising at least three layers integrally formed with an elastically deformable cushion layer, wherein the base material and the surface layer have substantially the same linear expansion coefficient, There is provided a bathroom washroom floor in which the material and the surface layer are bonded around the entire circumference.

  ADVANTAGE OF THE INVENTION According to this invention, the washroom floor of the bathroom in which the interface of each layer is hard to peel without depending only on the adhesive force of an adhesive agent is provided.

  In order to give softness to the washroom floor in the bathroom, it is conceivable to construct the washroom floor with a material having an elastically deformable cushioning property. For example, a foam having a cushioning property is water resistant, chemical resistant, The basic performance required for a washing floor such as impact is not excellent, and it is difficult to provide a washing floor made of only a cushioning material as a product. In addition to foam, there are rubber materials as cushioning materials, but since rubber materials have a rubber odor, such materials are placed in a highly airtight bathroom over a relatively large area such as a washroom floor. It is not preferable to use it.

  Therefore, when the foam is provided as a cushion layer on the washing floor, a surface layer made of a material that satisfies the basic performance of the unit bath such as water resistance is separately required on the surface exposed to the inside of the bathroom. In a structure in which such a surface layer is laminated on the surface side of the cushion layer, the user touches the surface layer, but the surface is used to make the user feel the function (softness) of the cushion layer. The layer is required to be flexible.

  A surface layer or cushion layer that satisfies the above-mentioned characteristics is difficult to secure sufficient strength to support the load, and apart from these layers, a base material with higher strength to support the load than the surface layer or cushion layer Is required. That is, in order to ensure the minimum basic performance required for a washing floor while giving softness to the washing floor, it is necessary to have a structure in which at least a base material, a cushion layer, and a surface layer are combined.

  FIG. 1 is a perspective view schematically showing a laminated structure of a washroom floor according to an embodiment of the present invention.

  The washing floor according to this embodiment includes a base material 1 made of a hard material such as FRP (Fiber Reinforced Plastic) and a soft material that is laminated on the base material 1 and is softer than the base material 1. In the present embodiment, the soft material is composed of the cushion layer 4 and the surface layer 5 laminated on the cushion layer 4 separately from the cushion layer 4, but at least the surface of the member having cushioning properties. You may use the integral structure which provided water resistance to. The soft material (cushion layer 4 and surface layer 5) is laminated on the inner surface of the base material 1 in the bathroom.

  FIG. 2 schematically shows a plan view of the substrate 1.

  The base material 1 is waterproof so that hot water does not leak out of the bathroom, and has sufficient strength not to bend or break even when subjected to static loads such as wall panels, ceiling panels, bath chairs and basins, and dynamic loads of users. For example, it is made of a thermosetting resin such as FRP (Fiber Reinforced Plastic), or a thermoplastic resin such as polypropylene or polyethylene.

  The base material 1 is provided with a concave portion 2 formed in a concave shape in a longitudinal sectional view. In the base material 1, the recess 2 occupies most of the area, and an edge 3 is provided outside the recess 2. The edge 3 is provided over the entire circumference of the recess 2. The upper surface of the edge portion 3 is provided at a position higher than the bottom surface of the recess 2. Moreover, since the edge part 3 has a flat part on the upper surface and adhere | attaches the surface layer 5 on the flat part, the stable and strong adhesion | attachment state is obtained.

  The cushion layer 4 is entirely accommodated in the concave portion 2 of the base material 1 and bonded and fixed to the bottom surface of the concave portion 2 with an adhesive such as a double-sided tape. The cushion layer 4 is elastically deformable and is made of a foamed material such as urethane. The cushion layer 4 may be an elastically deformable rubber material, but a foam without a rubber odor is preferable for use as a bathroom floor in a bathroom with high airtightness.

  The surface layer 5 covers the entire surface of the cushion layer 4 so as to cover the recess 2 of the base material 1. The planar size of the surface layer 5 is larger than the planar size of the cushion layer 4, and the edge 5 a that protrudes from the cushion layer 4 in the surface layer 5 is laminated on the edge 3 of the substrate 1. Further, the planar size of the surface layer 5 is smaller than the planar size of the substrate 1. The surface of the surface layer 5 is exposed in the bathroom and becomes a surface that is touched by the user or exposed to hot water. The surface layer 5 has water resistance, chemical resistance, impact resistance, and the like, and has flexibility that can follow elastic deformation of the lower cushion layer 4. As the surface layer 5, for example, FRP that is thinner and softer than the FRP used for the substrate 1 can be used.

  When the user applies a load on the surface layer 5 (at the time of loading), the cushion layer 4 contracts in the vertical direction, and the surface layer 5 bonded and fixed to the cushion layer 4 with an adhesive also deforms the cushion layer 4. Bends downward to follow. On the other hand, when the user leaves the state of applying a load on the surface layer 5 (no load), the cushion layer 4 extends in the vertical direction, and the surface is bonded and fixed to the cushion layer 4 with an adhesive. The layer 5 also bends upward and returns to the original so as to follow the deformation of the cushion layer 4.

  Further, as shown in FIG. 3, grooves 5 b are formed on the surface of the surface layer 5. The groove 5b functions as a drainage flow path for hot water flowing on the surface of the surface layer 5 toward a drain outlet (not shown). Moreover, by forming the grooves 5b on the surface of the surface layer 5, the surface of the surface layer 5 is uneven, and the washing floor surface is less likely to slip.

  Since the washing floor according to the present embodiment includes the cushion layer 4, a soft touch that does not hurt even if the user kneels can be obtained. In addition, the floor fits in with your feet, making it difficult to slip even with wet feet. Furthermore, for example, even if the basin is dropped on the floor, no sound is heard.

  If the surface layer 5 and the base material 1 have different linear expansion coefficients, different shearing forces may act on the interface between the layers when heat is applied, which may cause peeling. In particular, the washroom floor may be placed in an environment of about 65 ° C. during truck transportation, or may be hot water of about 40 ° C. in actual use. As described above, the washing floor is placed in an environment with a large temperature change, and therefore there is a possibility that linear expansion and contraction may occur, and countermeasures are necessary.

  When the surface layer 5 and the base material 1 are formed of a material having an approximate linear expansion coefficient, the shearing force applied to the cushion layer 4 sandwiched and bonded between them is the upper and lower surfaces of the cushion layer 4. Therefore, it is possible to reduce the possibility of peeling at the boundary surfaces of the layers, which are generated when the cushion layer 4 expands and contracts in the horizontal direction.

  Here, a measure for preventing peeling due to linear expansion by keeping the adhesive strength of each layer strong is also conceivable, but according to this embodiment, peeling can be prevented without depending only on the adhesive strength. . Specifically, in this embodiment, the surface layer 5 and the base material 1 each employ a material having an approximate linear expansion coefficient, thereby reducing anxiety factors such as peeling due to the difference in linear expansion of each layer. In particular, by making the surface layer 5 an FRP that is thinner and softer than an FRP that is widely used as a washing floor material, it is possible to use the same FRP as that of the surface layer 5 in the conventional manner. Therefore, it is preferable. In addition, since soft FRP becomes a hydrophilic material, it is advantageous also for drainage on the floor surface of the washing place.

A gap is formed between the side end of the cushion layer 4 and the side wall surface of the recess 2 in a state where the cushion layer 4 is housed in the recess 2 of the substrate 1, and the gap is flexible as shown in FIG. A flexible adhesive 15 is filled.
In this way, a gap is formed between the side end portion of the cushion layer 4 and the side wall surface of the recess 2, so that when the user rests on the washing floor and the cushion layer is crushed, Since it can extend in the lateral direction, the softness can be sufficiently felt.
An annular groove 16 is formed on the upper surface of the edge 3 of the substrate 1, and a groove 18 is also formed outside the groove 16. The outer groove 18 is wider than the inner groove 16. An adhesive 17 is filled in the inner groove 16, and a double-sided tape 19 is attached to the outer groove 18. In the surface layer 5, the edge portion 5 a protruding from the cushion layer 4 is adhesively fixed to the edge portion 3 of the substrate 1 through the adhesive 17 and the double-sided tape 19. As described above, since the adhesive portion by the double-sided tape is provided on the outer peripheral side of the adhesives 15 and 17, there is no possibility that the adhesive overflows when the surface layer 5 is attached to the substrate 1.

  In addition, when obtaining the laminated structure of the base material 1, the cushion layer 4, and the surface layer 5, they may be welded and fixed to each other by hot molding integrally (insert molding), or molding of the base material 1 After processing, the cushion layer 4 is attached to the bottom surface of the recess 2 using an adhesive such as a double-sided tape, and the surface layer 5 is attached to the surface of the cushion layer 4 using an adhesive such as a double-sided tape. May be attached.

  A side wall portion 11 that functions as a water return wall that rises upward is provided at the outermost edge portion of the base material 1, and a wall mounting for placing the bathroom wall panel 101 is provided immediately inside the side wall portion 11. A part 8 is provided. The wall placing portion 8 is provided on the base material 1 on the outer side than the soft material (the cushion layer 4 and the surface layer 5), and the wall panel 101 is placed thereon. The wall panel 101 is not placed on the soft material (the cushion layer 4 and the surface layer 5).

  In this case, since the load of the wall panel 101 or the ceiling panel on the wall panel 101 is not applied to the soft material, the soft material can be prevented from being sag. If the soft material sags, the softness of the washing floor is lost, and of course, a recess is formed on the surface of the soft material, and hot water accumulates there, which is one of the basic performances required for the washing floor. Drainage may be impaired. However, in this embodiment, since the load of the wall panel 101 or the ceiling panel is not applied to the soft material, the soft material is restrained from sag and the softness and drainage of the washing floor are not impaired.

  Further, since the wall panel 101 is not placed on the soft material, it is not necessary to dismantle the bathroom unit during the maintenance (replacement) of the soft material. Further, the wall panel 101 is not inclined due to the elastic deformation of the soft material, and the support of the wall panel 101 and the ceiling panel thereon is not unstable.

  Or at least one part inside the bathroom in the wall panel 101 may be mounted on the edge part 5a of the surface layer 5 laminated | stacked on the edge part 3 of the base material 1 (it overlaps). Good. In this case, the boundary between the surface layer 5 and the base material 1 is not exposed in the bathroom, and the wall panel 101 can be connected to the boundary between the surface layer 5 and the base material 1 without performing a water stop treatment with silicon or the like. Water can be stopped by sandwiching the joint member between the surface layer 5 and the product value can be increased without impairing the appearance.

  The cushioning layer 4 bears most of the cushioning properties of the washroom floor, and the surface layer 5 bears water resistance, softness against skin contact, design, etc., and therefore does not sink as much as the cushion layer 4 even when a load is applied. Therefore, even when the wall panel 101 and the surface layer 5 are overlapped, the edge 5 a of the surface layer 5 on which the wall panel 101 is placed is not on the edge 3 of the substrate 1 without the cushion layer 4 interposed therebetween. Since the load of the wall panel 101 is not applied to the cushion layer 4, the wall panel 101 is tilted by the elastic deformation (sinking) of the cushion layer 4, or the restoring force of the cushion layer 4 is applied to the wall panel 101. Does not work. Thereby, the wall panel 101 and the ceiling panel on it can be stably supported on the base material 1, and an undesired gap is generated in the joint portion between the wall panels 101 or between the wall panel 101 and another member. Prevents damage to the waterproofing of the bathroom.

  The cushion layer 4 is elastically deformed, and the flexible surface layer 5 bends accordingly, so that the user feels the softness of the washing floor, but the washing floor of the unit bath is It takes weight (especially when concentrated in a bath chair, etc.), and the wall panel is loaded and used for a long time. ) Is a concern. When the cushion layer 4 sags, as described above, the softness of the washing floor is lost, and as a result, a recess is formed on the surface of the surface layer 5 and hot water is accumulated, so that the basic is required for the washing floor. The drainage which is one of the performances may be impaired.

  When the cushion layer 4 is elastically deformed and crushed, the cushion layer 4 tries to return to its original state by its own restoring force. In addition to this restoring force, according to the present embodiment, the surface layer 5 is contracted. The force of pulling up can also promote the restoration of the cushion layer 4 to the natural state.

  Since the surface layer 5 is a layer constituting the outermost surface of the washroom floor, the edge 3 of the base material 1 is covered with the cushion layer 4 in a state where a certain amount of tension is applied so as not to cause wrinkles or sagging. Adhered and fixed to. Therefore, when a load is applied to the surface layer 5 from above and the surface layer 5 bends downward, a force for returning to the original state (a state in which there is no load from above) is applied. In the surface layer 5, the back surface of the portion covering the cushion layer 4 is bonded to the cushion layer 4, and the cushion layer 4 and the bottom surface of the recess 2 of the substrate 1 are also bonded, so that the surface layer 5 is in its original state. When returning, the cushion layer 4 also follows the surface layer 5 and is pulled up.

  That is, when the cushion layer 4 is crushed due to elastic deformation, not only the restoring force of the cushion layer 4 itself but also the action of the cushion layer 4 following the restoration of the surface layer 5 contributes to the restoration of the cushion layer 4. Thereby, the cushion layer 4 becomes easy to return to a natural state, and it becomes difficult to sag.

  Since the edge portion 5a of the surface layer 5 is bonded and fixed to the edge portion 3 of the base material 1 so as to cover the cushion layer 4, the thickness of the cushion layer 4 in the no-load state is equal to that of the concave portion 2 of the base material 1. When the depth is larger than the depth, the cushion layer 4 receives a force pressed downward from the surface layer 5, and the cushioning property is reduced and the cushion layer 4 is easily sag. Moreover, if the thickness of the cushion layer 4 in the unloaded state is smaller than the depth of the concave portion 2 of the substrate 1, a gap may be formed between the surface layer 5 and the cushion layer 4 and the cushioning property may be impaired. Therefore, it is desirable that the thickness of the cushion layer 4 in a no-load state (natural state) in which no load acts on the cushion layer 4 is substantially the same as the depth of the concave portion 2 of the substrate 1.

  There are two types of foams: a closed cell structure in which individual bubbles are sealed and exist independently, and an open cell structure in which the bubbles are connected to other bubbles and the outside of the foam to be continuous with each other. As the foam used as the cushion layer 4 of the washing floor according to the form, a foam having an open cell structure is desirable from the viewpoint of suppressing the sag of the cushion layer 4.

  FIG. 5 shows another specific example of the base material edge portion that functions as a side wall of the concave portion in which the cushion layer 4 is accommodated and to which the edge portion 5a of the surface layer 5 is bonded and fixed.

  In this specific example, a hard edge member 35 is provided on a flat upper surface portion (bottom surface portion) 31a of the bread-shaped substrate 31 separately from the upper surface portion 31a. The edge member 35 is made of a material harder than the surface layer 5 and the cushion layer 4 (for example, hard FRP), a recess 32 is formed inside thereof, and the edge 5a of the surface layer 5 is bonded and fixed to the upper surface. The cushion layer 4 is accommodated in the recess 32.

  On the bottom surface portion 35 of the base material 31, the wall panel 101 is placed outside the portion where the edge member 35 is provided. Therefore, also in this specific example, the load of the wall panel 101 and the ceiling panel thereon is not applied to the soft material (the surface layer 5 and the cushion layer 4). Thereby, the sag of a soft material can be suppressed and the softness and drainage of a washing floor are not impaired.

The perspective view which shows typically the laminated structure of the washroom floor of the bathroom which concerns on embodiment of this invention. The top view of the base material in the washing-room floor which concerns on the embodiment. The enlarged view of the surface of the surface layer in the washing-room floor which concerns on the embodiment. The expanded sectional view of the part by which the wall panel in the washing-room floor which concerns on the same embodiment is mounted. The schematic diagram which shows the cross-section of the washing-room floor which concerns on other embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Base material, 2 ... Recessed part, 3 ... Edge part, 4 ... Cushion layer, 5 ... Surface layer, 8 ... Wall mounting part, 101 ... Wall panel

Claims (5)

A hard substrate to support the load,
A flexible surface layer laminated inside the bathroom from the substrate;
A bathroom washroom floor comprising at least three or more layers integrally formed with the elastically deformable cushion layer laminated between the base material and the surface layer,
The linear expansion coefficient of the base material and the surface layer is substantially the same,
The bathroom washroom floor, wherein the base material and the surface layer are bonded all around the periphery. The base material has a concave portion formed in a concave shape in a longitudinal sectional view, and an edge provided over the entire circumference of the concave portion and provided at a position higher than the bottom surface of the concave portion,
The cushion layer is accommodated in the recess of the base material,
The surface layer is laminated on the cushion layer so as to cover the concave portion, and is laminated on the edge without interposing the cushion layer,
The bathroom washroom floor according to claim 1, wherein the surface layer and the base material are fixed on the edge.   The bathroom washroom floor according to claim 2, wherein the thickness of the cushion layer in an unloaded state is substantially the same as the depth of the recess.   The area of the recess is formed larger than the cross-sectional area of the cushion layer, so that the cushion layer is accommodated in the recess of the base material, and the side edge of the cushion layer and the side wall surface of the recess The bathroom washroom floor according to claim 2 or 3, wherein a gap is formed between the two.   The bathroom washroom floor according to claim 4, wherein a gap between a side end portion of the cushion layer and a side wall surface of the concave portion is filled with an adhesive.

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