JP5696977B2 - Washing floor surface material - Google Patents

Description

  The present invention relates to a surface material for a washing place floor that is laminated on a washing place floor pan incorporated in a bathroom unit.

  Conventionally, as a washroom floor incorporated in a bathroom unit, one having a waterproof pan made of FRP (Fiber Reinforced Plastic) on its base material is often used. As such a washing floor, in particular, there is no surface material (see, for example, Patent Document 1), and there is also a surface provided with a surface material in order to improve appearance design or impart waterproofness ( For example, see Patent Documents 2 and 3).

  The surface material disclosed in Patent Document 2 is obtained by coating a flat surface material only on the floor surface portion of the washing floor, and the surface material is not laminated on the drainage pit portion. If it is such a planar surface material, laminate molding can be employed in which a multilayer thin film material including a printed decorative layer is laminated and adhered. Since this laminate molding can efficiently produce a long sheet-like decorative sheet continuously, it is a technique capable of realizing various designs with high economic efficiency. However, the laminate molding is difficult to give a complicated three-dimensional shape such as a drain pit due to its manufacturing method. For this reason, when the waterproof pan is formed of a material that is not excellent in design and waterproof properties (for example, a foam material), the drain pit portion of the waterproof pan cannot be covered with a surface material formed by laminate molding.

  Moreover, the surface material currently disclosed by patent document 3 coat | covers a surface material on both a floor surface part and a drainage pit part, and integrally forms the floor surface part and the drainage pit part by press molding. The surface material formed by such press molding is difficult to impart various designs as compared with laminate molding.

  As described above, the method of attaching the laminated surface material is one of the methods for realizing a product with high design properties at a low cost, but it is also difficult to form a three-dimensional shape. . Under these circumstances, if a three-dimensional surface material having a high design is formed, for example, a floor member is formed of a laminated sheet-like member, and a drainage pit member separately formed by injection molding or the like It can be considered that the floor members are joined and integrated later.

JP 7-189310 A JP 2010-59652 A JP 2010-229791 A

  When the floor surface member and the drainage pit member are separately formed and integrated with a double-sided tape or an adhesive, the joint portion becomes weaker than the conventional integrally formed product. And since it is a surface material used for a washroom floor, a joining part is requested | required of high joining strength and watertightness. In order to solve this problem, the present inventors have made various studies while paying attention to the structure for joining the floor surface portion and the drainage pit member. As a result, the floor surface member and the drainage pit member are joined and integrated by heat fusion. This has led to the finding that it is preferable to satisfy high bonding strength and water tightness.

  However, when heat is generated at the joint between the floor member and the drain pit member and the respective members are melted and bonded, it is difficult to control the degree of melting of each member. It may melt excessively. In particular, the surface of the floor member is provided with a predetermined concavo-convex pattern for the purpose of improving water drainage performance as a washroom floor, and if this concavo-convex pattern is deformed or disappears due to excessive heat during heat fusion, the washroom There arises a problem that water drainage performance as a floor is impaired.

  Therefore, in the surface material in which the floor member and the drain pit member are joined and integrated by heat fusion, the present invention prevents the uneven pattern of the floor member from being deformed / disappeared by heat during heat fusion, An object of the present invention is to provide a surface material for a washroom floor that can maintain high water drainage performance.

  The present invention is based on such knowledge, and is a surface material for a washing floor that is laminated on a washing floor floor pan incorporated in a bathroom unit, and has an uneven shape formed on the upper surface to constitute a floor surface portion of the washing floor. It is composed of a floor surface member and a drain pit member that constitutes a drain pit portion of the washroom floor, and the upper end of the drain pit member is joined and integrated by heat fusion to the rear surface of the end of the floor surface member. The joint portion of the drainage pit member with the floor member is provided with only a part of a preferentially melted portion that is preferentially melted by heat fusion.

  In the surface material for a washing floor according to the present invention, since the surface material is provided on the waterproof pan, a waterproof pan (for example, a floor pan made of a foam material) made of a material having a low appearance design or waterproof property is employed. It becomes possible. According to this, the choice of the material and manufacturing method of a waterproof pan spreads, and the freedom degree of base-material design can be improved.

  Further, in the surface material for a washing floor according to the present invention, since the floor surface portion and the drainage pit portion constituting the surface material are separately molded, the manufacturing method or product for integrally molding the floor surface portion and the drainage pit portion is used. In comparison, the design that can be imparted to the floor surface portion is increased, and an economically optimal decoration method can be combined, so that the degree of freedom and economics of design can be improved.

  Furthermore, in the surface material for a washing floor according to the present invention, the upper end of the drainage pit member is joined to the rear surface of the end portion of the floor member, so that the cover member (trap cover) is placed in the bathroom in the state where the cover member is placed. The drainage pit part is not visible to the user who is. For this reason, also in this respect, the design of the drain pit portion and its peripheral portion is improved. Moreover, when it joins as mentioned above, since the joint of a floor surface member and a drainage pit member is not exposed to the upper surface of a washroom floor, the drainage property which flows the said floor upper surface can be improved.

  Furthermore, in the surface material for a wash floor according to the present invention, the floor member and the drainage pit member are joined by heat fusion, so that both water tightness and high joining strength can be achieved.

  In addition, in the surface material for a washing place floor according to the present invention, a preferential dissolution portion that is preferentially melted by heat fusion is provided in only a part of the joint portion of the drainage pit member with the floor surface member. For example, if the entire joint of the drainage pit member and the floor member is to be melted evenly, it is necessary to generate a lot of heat at the joint, and a lot of heat is applied to the floor member as well, resulting in damage. . According to the present invention, since the preferential melting portion provided only in a part of the joint portion of the drainage pit member is preferentially melted, it is possible to perform the fusion with the minimum necessary heat generation, and by the heat at the time of the thermal fusion It is possible to prevent the uneven pattern of the floor member from being deformed / disappeared, and to hardly affect the drainage (formation of drainage grooves and satin). Further, at the time of fusing, since the drain pit member (specifically, the preferential melting portion) is relatively more melted than the floor member, a solid fusing is possible.

  Moreover, in the surface material for washroom floor concerning this invention, it is preferable that the said preferential dissolution part is provided in the intermediate position of the both ends of the said junction part. According to this preferred embodiment, when the preferentially melted portion is melted by heat fusion, the melted resin can be prevented from flowing out to the front side (inside the bathroom) of the joint portion between the floor surface member and the drainage pit member. For this reason, the external appearance designability and drainage as a surface material can be improved. Moreover, since the melted resin can be prevented from flowing out to the back side (outside the bathroom) of the joint portion, more solid fusion is possible.

  Moreover, in the surface material for washroom floors concerning this invention, it is preferable that the said priority melt | dissolution part is the protrusion protruded in the back surface side of the said floor surface member with respect to the said whole junction part. The protrusion (particularly its tip) has a small heat capacity and is easily melted. In other words, the projection having a small heat capacity contacts the back surface of the floor member at the time of heat fusion, receives heat, and is preferentially melted before other portions. According to this preferable aspect, it is possible to prevent the concave / convex pattern of the floor member from being deformed / disappeared by heat at the time of heat-sealing with a simple configuration that only devise the shape of the joint portion of the drainage pit member.

  According to the present invention, in the surface material in which the floor member and the drainage pit member are joined and integrated by thermal fusion, the uneven pattern of the floor member is prevented from being deformed / disappeared by heat during thermal fusion, It is possible to provide a surface material for a washroom floor that can maintain high water drainage performance.

It is a perspective view which shows an example of the bathroom unit to which the washing-room floor concerning this invention was applied. It is a perspective view which shows the structural example of a washroom floor. It is a disassembled perspective view which shows the surface material, base material, etc. which comprise a washroom floor. (A) The perspective view which shows the floor surface member and drainage pit member which were shape | molded separately, (B) The perspective view of the surface material comprised by integrating these floor surface members and the drainage pit member. It is a longitudinal cross-sectional view of the drainage port periphery of the washroom floor which shows one Embodiment of this invention. It is a disassembled perspective view which shows the structural example of the member of a drain outlet periphery. It is a disassembled perspective view which shows the structural example of the member of a drain outlet periphery. It is a perspective view which shows the structural example of the surface of a drainage pit member. It is a perspective view which shows the structural example of the member around a drain outlet with a partial cross section. It is a longitudinal cross-sectional view of the drainage port periphery of the washroom floor which shows the 2nd Embodiment of this invention. It is a longitudinal cross-sectional view of the drainage port periphery of the washing-room floor which shows the 3rd Embodiment of this invention. It is a longitudinal cross-sectional view of the drainage port periphery of the washing-room floor which shows the 4th Embodiment of this invention. It is an expanded longitudinal cross-sectional view which shows the cross-sectional structure which shows 1st Embodiment of a drainage pit member. (A) shows the state before fusion, and (b) shows the state after fusion. It is an expanded longitudinal cross-sectional view which shows the cross-sectional structure which shows 2nd Embodiment of a drainage pit member. (A) shows the state before fusion, and (b) shows the state after fusion.

  Hereinafter, the configuration of the present invention will be described in detail based on an example of an embodiment shown in the drawings.

  FIG. 1 shows an example of a washing floor according to the present invention. The washing place floor 1 according to the present invention includes a surface material 2, a base material 5, a drain trap 6, a trap cover (cover member) 7, and the like, and is further provided with a joint protection means 8.

  The washroom floor 1 is incorporated in the bathroom unit 10 and forms a washroom floor adjacent to the bathtub 200 (see FIG. 1 and the like). A drain port 11 is formed at the lowest position on the washing floor 1. The surface of the washing floor 1 (surface material 2) is provided with a drainage gradient so that the drainage port 11 is the lowest, and the water on the surface material 2 flows along the drainage gradient and the drainage pit 11 (the drainage pit) Water is collected in the member 4).

  The surface material 2 is a member that covers the entire surface of the substrate 5 and imparts waterproofness. The surface material 2 of the present embodiment includes a floor surface member 3 constituting the floor surface portion 1a of the washing floor 1 and a drainage pit member 4 constituting the drainage pit portion (indicated by symbol T in FIG. 5) of the washing floor 1. (See FIGS. 4 and 5). It is also preferable to employ a surface material 2 that improves the design of the washing floor 1 such as a pattern.

  In the present embodiment, the floor surface member 3 and the drainage pit member 4 are integrated by joining the upper end of the drainage pit member 4 to the rear surface of the end of the floor surface member 3 (see FIGS. 4 to 6). In this embodiment, the floor member 3 and the drain pit member 4 are joined by heat fusion so as to achieve both water tightness and high joining strength (see FIG. 5).

  Further, as shown in FIG. 13, a preferential dissolution portion 41 that is preferentially melted by heat fusion is provided in a part of the joint portion of the drainage pit member 4 with the floor member 3. In this way, since the preferential dissolution portion 41 provided only in a part of the joint portion of the drainage pit member 4 is preferentially melted, the uneven pattern of the floor member 3 is deformed / disappeared by the heat at the time of heat fusion. Can be prevented, and it is difficult to influence drainage (formation of drainage grooves and satin). Further, at the time of fusion, the drain pit member 4 (specifically, the preferential dissolution part 41) is relatively more melted than the floor member 3, so that solid fusion is possible.

  Moreover, the preferential dissolution part 41 is provided in the intermediate position of the both ends of a junction part. For this reason, when the preferential melt | dissolution part 41 melt | dissolves by heat sealing | fusion, it can prevent that the melted resin flows out to the front side (bathroom inside) of the junction part of the floor surface member 3 and the drainage pit member 4. FIG. Thereby, the external appearance designability and drainage as the surface material 2 can be improved. Moreover, since the melted resin can be prevented from flowing out to the back side (outside the bathroom) of the joint portion, more solid fusion is possible.

  If it demonstrates in detail, the priority melt | dissolution part 41 is the protrusion 41 which protruded in the back surface side of the floor member 3 with respect to the said whole junction part. The protrusion 31 (particularly its tip) has a small heat capacity and is easily melted. That is, the projection 31 having a small heat capacity contacts the back surface of the floor member 3 during heat fusion, receives heat, and melts preferentially before other portions. According to this preferable aspect, it is possible to prevent the concave / convex pattern of the floor member 3 from being deformed / disappeared by heat at the time of heat-sealing with a simple configuration that only devise the shape of the joint portion of the drain pit member 4.

  Further, at the joint portion of the drainage pit member 4, outflow suppression portions 42 and 43 are provided on the drainage pit portion side (inside the bathroom) of the preferential dissolution portion 41.

  The outflow restraint portion 42 is a concave pocket 42 that is recessed downward with respect to the entire joint portion, and the concave pocket 42 has a function of accumulating liquefied resin by melting the preferentially dissolving portion 41 by heat fusion. With this concave pocket 42, it is possible to prevent the excess resin that has been liquefied by melting the preferentially dissolving portion 41 by heat fusion from flowing into the bathroom, and it is difficult to affect the appearance and drainage.

  Moreover, the outflow suppression part 43 is the protrusion 43 which protruded in the back surface side of the floor surface member 3 with respect to the said whole junction part, and a protrusion is the flow of the resin which the priority melt | dissolution part 41 melt | dissolved by heat fusion and liquefied Has the function of blocking the By this protrusion 41, it is possible to prevent the excess resin liquefied by the preferential dissolution part 41 from being melted by heat fusion from flowing into the bathroom, and it is difficult to affect the appearance and drainage.

  In FIG. 13, both the protrusion 41 and the concave pocket 42 are provided as the outflow prevention portion. However, as shown in FIG. 14, excess resin liquefied only by the protrusion 41 flows out into the bathroom. Although not shown, it is also possible to prevent the surplus resin liquefied only by the concave pocket 42 from flowing out into the bathroom. In addition, even if heat is generated in the protrusion 41 and finally melts, it melts after the preferential dissolution part 41, so that the preferential dissolution part 41 melts and liquefies the liquefied resin flow Will be demonstrated. Further, since the protrusion 41 has a smaller volume than the preferentially dissolving portion 41, it is possible to suppress the occurrence of burrs that deteriorate the appearance even if the protrusion 41 melts.

  Further, in the present embodiment, the upper end of the drainage pit member 4 is joined to the rear surface of the end portion inside the floor surface member 3 (close to the drainage port 11) (see FIGS. 5 and 6). In such a case, when the trap cover 7 is placed on the drain trap 6, the drain pit T cannot be seen by the user in the bathroom, so the design of the drain pit T and its surroundings can be improved. Can be planned. In addition, in such a case, since the joint between the floor member 3 and the drain pit member 4 is not exposed on the upper surface of the washing floor 1, it is possible to improve drainage flowing on the upper surface of the floor.

  The base material 5 is a member that is disposed below the floor surface member 3 and supports a load applied on the floor surface portion 1a of the washing floor 1 and is not particularly illustrated, but includes a bathroom wall panel, a ceiling panel, a bath chair, and a wash surface. It has sufficient strength so that it will not bend or break even when subjected to static loads such as containers or dynamic loads of users. Specifically, the base material 5 includes a washing floor floor pan made of a foam material, a plate-like gantry arranged at the lower part of the washing yard floor pan, a frame-like gantry arranged at the lower part of the plate-like gantry. Moreover, you may interpose the cushioning material 400 between the base material 5 and the surface material 2 (refer FIG. 7). The plate-like gantry of the base material 5 exemplified in the present embodiment is provided with a work port 51 and a drainage opening 52, and for example, the four corners are supported by the base material support legs 53 (see FIG. 3).

  In addition, the washing floor pan is preferably waterproof so that hot water does not leak out of the bathroom, but in the case of this embodiment configured to cover the entire surface of the washing floor floor pan with the surface material 2, 5 does not have to be sufficiently waterproof. Therefore, as a material of the washing floor floor pan, in addition to a thermosetting resin such as FRP which is generally used, a material obtained by reinforcing a thermoplastic resin such as polypropylene or polyethylene, and further, for example, a foam material It is possible to use a substrate with low waterproofness.

  The drain trap 6 is attached to a drain port 11 formed at the bottom of the drain pit member 4 (see FIG. 3 and the like). A bathtub drain port 62 is connected to the drain trap 6 via a bathtub drain pipe 61 (see FIG. 3). The drain trap 6 is connected to a drain pipe 12 for allowing the drainage to flow to the sewage side (see FIGS. 5 and 6).

  The trap cover 7 is a cover that covers the upper portion of the drain pit member 4 (see FIGS. 2 and 3). The trap cover 7 is placed on the drain pit member 4 in a detachable state. The shape of the trap cover 7 is not particularly limited, but in this embodiment, the trap cover 7 having a wall portion 71 whose four sides are bent downward is used (see FIG. 5 and the like).

  Moreover, on the building floor 100, the mount frame 300 which supports the bathtub 200 grade | etc., Is installed (refer FIG. 1). The gantry 300 is configured by combining, for example, columnar metal materials (steel materials) vertically and horizontally, and has sufficient strength and durability to support a bathtub load in a state where bath water is accumulated and a bather is present. Have.

  Here, in the present embodiment, the drain trap 6 is fixed to the drain port 11 via a fastening flange 13 (see FIGS. 7 and 9). Further, in this embodiment, the wash floor floor pan is not interposed between the fastening flange 13 and the drain trap 6 in the vertical direction, and the flange fastening, which is one of the parts that require high water-stopping properties. Many members are prevented from being stacked on the portion (the portion to be tightened by the tightening flange 13), and the water stoppage of the tightening portion is improved (see FIG. 9).

  The joint protection means 8 prevents the force applied from the trap cover 7 to the drain pit member 4 from being transmitted to the joint between the floor member 3 and the drain pit member 4 (indicated by symbol C in FIG. 5 and the like). is there. Although the specific example of such a junction part protection means 8 is not specifically limited, In this embodiment, the junction part protection means 8 of the structure which has the receiving part 81, the earthing | grounding part 82, and the transmission part 83 is employ | adopted. (Refer to FIG. 5 etc.).

  The receiving portion 81 is disposed directly below the drain pit member 4 and is formed as a portion that receives the drain pit member 4. For example, in the present embodiment, a part around the drain outlet 11 of the washing floor floor pan is protruded inwardly like a basket, and the protruding part is made to function as a catching part 81 (see FIG. 5). A load P acts on the receiving portion 81 via the wall portion 71. In addition, the load P here includes not only the load due to the weight of the trap cover 7 but also the load acting when the weight of the user or water is added.

  The ground contact portion 82 is provided at a position separated from the space directly below the drain pit member 4 and is formed as a portion to be grounded on the building floor 100. For example, in the present embodiment, a member such as a so-called support bar arranged between the washing floor floor pan and the building floor 100 functions as the grounding portion 82 (see FIG. 5). Further, in the general washing place floor 1, it is considered that the drain trap 6 and the drain pipe 12 connected to the drain trap 6 are arranged in the space directly below the drain pit member 4 (FIGS. 3 and 5). In this embodiment, by providing the grounding portion 82 at a position separated from the space directly below the drainage pit member 4, the grounding portion 82 is prevented from interfering with the drainage pipe 12 and the like, thereby improving workability. ing.

  The transmission part 83 is formed as a part that transmits the force received by the receiving part 81 to the grounding part 82 without interfering with the drain trap 6 and the drain pipe 12. For example, in the present embodiment, the peripheral portion of the drainage port 11 in the base material 5 is caused to function as a portion that transmits the force received by the receiving portion 81 to the grounding portion 82 (see FIG. 5 and the like).

  The number and arrangement of the above-mentioned grounding portions 82 are not particularly limited as long as they can release the load P to the building floor 100 and prevent the joint C from being peeled off or damaged. For example, as shown in FIG. Further, when the opening 52 of the plate mount, the outer frame of the drainage pit member 4, the drainage port 11 and the trap cover 7 are formed in a rectangular shape, it is preferable to arrange these grounding portions 82 at least at the four corners. By doing so, the load P can be transmitted more evenly and escaped to the building floor 100. In addition, in FIG. 5 etc., the cut surface of a cross section is not specifically defined. If the drain port 11 and the like are rectangular and the cut port is along a diagonal line, the diagonal grounding portion 82 (only) is illustrated in FIG. 5 and the like.

  As described so far, according to the washing floor 1 of the present embodiment, since the surface material 2 is provided on the washing floor floor pan, a material having a low appearance design and waterproofness (for example, a foam floor pan) is used. It is possible to adopt. That is, since it becomes possible to construct the wash floor 1 with waterproofing without using a material such as a conventional FRP waterproof pan, the wash floor 1 can be formed by other manufacturing methods, etc. The choice of materials and manufacturing methods for the washing floor floor bread is expanded, and the degree of freedom in base material design is increased.

  In this embodiment, since the floor member 3 and the drain pit member 4 constituting the surface material 2 of the washing floor 1 are separately formed (see FIG. 4 and the like), the floor 1a and the drain pit T Compared with the manufacturing method or product which integrally molds from the beginning, the degree of freedom in designing the floor member 3 (and the floor portion 1a constituted thereby) is also increased. Therefore, the degree of freedom in design of the surface material 2 can be improved.

  Furthermore, in the present embodiment, when the separately molded floor member 3 and the drain pit member 4 are joined, the joint protecting means 8 is provided, so that the force applied to the drain pit member 4 (on the trap cover 7) It is possible to prevent the user's load applied to the joint C from being transmitted to the joint C between the floor member 3 and the drainage pit member 4, so that an unreasonable load is not applied to the joint C. For this reason, also in the surface material 2 (surface material 2 which was not integrally molded from the beginning) which joined and integrated the floor surface member 3 and the drain pit member 4, the junction part C peels off or is damaged. It is possible to suppress the possibility of leaking water and to eliminate the possibility of leaking as much as possible.

  The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited thereto, and various modifications can be made without departing from the scope of the present invention. For example, in the present embodiment, one form of the joint protection means 8 that suppresses the force applied from the trap cover 7 to the drain pit member 4 from being transmitted to the joint C between the floor member 3 and the drain pit member 4 is shown. However (see FIG. 5), this configuration is only a preferred example.

  Hereinafter, another example of the joint protection means 8 will be shown as a second embodiment of the present invention (see FIG. 10). In this embodiment, the receiving part 81 and the transmission part 83 of the joint part protection means 8 are formed on a frame-like frame. In such a case, a part of the frame-like gantry that is indispensable in the washing floor 1 according to the present invention (for example, a step formed integrally near the opening 52) is used as a member that exhibits a receiving function and a transmission function. Since it can utilize effectively, it leads to simplification of the whole structure of the washing-room floor 1. Furthermore, in this embodiment, the support leg (base material support leg 53) which supports a frame-shaped mount is used as the grounding part 82 (refer FIG. 10).

  Then, the other example of the junction part protection means 8 is shown as a 3rd Embodiment of this invention (refer FIG. 11). In the present embodiment, a receiving portion 81 is provided at a position directly below a placement portion (indicated by reference numeral 41 in FIG. 11) on which the trap cover (cover member) 7 of the drain pit member 4 is placed. As shown in FIG. 11, the receiving portion 81 in this case may be a part of the drain trap 6. Here, if the receiving portion 81 is not located directly below the placement portion 41, the load position and the support position are offset (a state shifted in the horizontal direction). 4 itself must have a considerable degree of rigidity (stiff enough to receive a load while suppressing deformation), and the degree of design freedom must be reduced. On the other hand, according to the present embodiment, such a situation can be avoided, and even when the rigidity of the drain pit member 4 itself is not high, it is possible to suppress the load on the joint C as much as possible.

  Further, as described above, when the catching portion 81 and the transmission portion 83 are formed in the drain trap 6, the trap support leg that is suspended from the bottom of the drain trap 6 and is grounded on the building floor 100 is connected to the ground portion. 82 (see FIG. 11). In this way, the ground contact portion 82 disposed at the lower portion of the drainage pit member 4 transmits the load P applied to the drainage pit member 4 from the trap cover 7 to the building floor 100. In the present invention, the drain trap 6 is indispensable, and if the joint protection means 8 is constructed using the essential configuration, the overall configuration of the washing floor 1 can be simplified. Further, by using such a joint protection means 8, a force applied to the drain pit member 4 is released so as not to be transmitted to the joint C while using the bathroom outside space (dead space) below the drain pit member 4. It becomes possible.

  Subsequently, still another example of the joint protecting means 8 will be shown as a fourth embodiment of the present invention. In the embodiment described above, the load P received from the trap cover 7 is received and transmitted to only one of the base material 5 and the drain trap 6. However, in this embodiment, the load P received by the drain trap 6 is the base material. 5 is transmitted to the grounding part 82 via FIG. In such a configuration, it is preferable that a part of the drain trap 6 and the base material 5 are directly or indirectly bonded. In this embodiment, the drain trap 6 is formed with a flange-like flange portion 63 extending in the horizontal direction, and the flange portion 63 is fastened to the back surface of the substrate 5 by fastening means 64 such as a screw ( (See FIG. 12). According to this, the junction protection means 8 is formed without forming a step or the like in the portion near the opening 52 of the base material 5 and without providing a trap support leg (grounding portion) at the bottom of the drain trap 6. Can be built.

1: Washing floor 1a: Floor surface part 2: Surface material 3: Floor surface member 4: Drainage pit member 5: Base material 6: Drainage trap 7: Trap cover (cover member)
8: Joint part protection means 10: Bathroom unit 11: Drain port 12: Drain pipe 13: Fastening flange 41: Preferential dissolution part 42: Concave pocket 43: Protrusion 81: Receiving part 82: Grounding part 83: Transmission part 100: Architecture Floor C: Joint
T: Drainage pit

Claims (3)

A floor material for a washing floor laminated on a washing floor floor pan incorporated in a bathroom unit,
An uneven shape is formed on the upper surface, and it is composed of a floor surface member constituting the floor surface portion of the washroom floor and a drainage pit member constituting the drainage pit portion of the washroom floor,
The upper end of the drainage pit member is joined and integrated with the back of the end of the floor member by heat fusion,
A surface material for a washroom floor, wherein a preferential dissolution portion that is preferentially melted by heat fusion is provided in a part of a joint portion of the drainage pit member with the floor surface member.   The surface material for a washroom floor according to claim 1, wherein the preferential dissolution portion is provided at an intermediate position between both end portions of the joint portion.   The surface material for a washroom floor according to claim 1 or 2, wherein the preferential dissolution part is a protrusion protruding toward the back side of the floor member with respect to the entire joint part.

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