Draining tool

Abstract

To provide a draining tool allowing easy engagement and disengagement of a cover with a draining tool body.SOLUTION: A draining tool has a draining tool body 20 and a cover 30 forming a draining passage 11 between the draining tool body 20 and itself. The draining tool body 20 has a pair of engaging protrusions 24, and the cover 30 has a pair of engaging recesses 35 engageable with the pair of the engaging protrusions 24 by externally fitting.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a drainage device that is installed on a balcony or in a corridor of an apartment building or the like to guide wastewater discharged from an air conditioner or the like into a drain in the balcony or in the corridor. [Background technology]

[0002] Wastewater discharged from air conditioners, water heaters, etc. (hereinafter referred to as "air conditioners, etc.") installed in apartment buildings is discharged outside through hoses connected to the air conditioners, etc. The wastewater is then discharged outside the house through the balcony or hallway of the apartment building, but if the wastewater is discharged directly onto the floor of the balcony or hallway, the balcony or hallway will become wet with the wastewater, causing deterioration of the balcony, etc. Furthermore, there is a possibility that the wastewater will spread onto the balcony, etc. and flow into the balcony, etc. of an adjacent residence. For this reason, there are drainage devices that guide the wastewater from air conditioners, etc. to a drain.

[0003] This drainage tool has a hollow drainage channel inside. Wastewater discharged from the hose of an air conditioner or the like passes through the drainage channel of the drainage tool and is discharged into a drain in a balcony or hallway, so the floor of the balcony or hallway does not get wet with the wastewater.

[0004] There is also a split type of drainage tool, which is composed of a drainage tool body that is placed on the floor surface and a cover, and a drainage flow path is formed between the drainage tool body and the cover. In such a split type drainage tool, engaging parts are provided on both the drainage tool body and the cover, and they are assembled by engaging them (Fig. 4 of Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2007-113355 A Summary of the Invention [Problem to be solved by the invention]

[0006] An object of the present invention is to provide a drainage tool that facilitates the operation of attaching and detaching a cover to and from a drainage tool body. [Means for solving the problem]

[0007] The invention for solving the above problem provides a drainage tool including a drainage tool main body and a cover that forms a drainage flow path between the drainage tool main body and the drainage tool main body, the drainage tool main body having a pair of first engagement parts, and the cover having a pair of second engagement parts that can be engaged with the pair of first engagement parts by external fitting. This makes it easy to engage and detach the cover from the drainage tool main body. The upper surface of the cover is formed in an upwardly convex arc shape. The cover has an upper surface on which protruding ridges are formed at substantially equal intervals in the width direction. Effect of the Invention

[0008] According to the drainage tool of the present invention, the operation of attaching and detaching the cover to and from the drainage tool body can be facilitated. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram of a balcony on which a drainage device according to an embodiment of the present invention is installed. [Diagram 2] FIG. [Diagram 3] FIG. 2 is a widthwise cross-sectional view of the drainage tool body and the cover according to the embodiment in a separated state. [Figure 4] FIG. 4(a) is a plan view of the hose receiver according to this embodiment, FIG. 4(b) is a front view of the same, and FIG. 4(c) is a cross-sectional view of the same. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, one embodiment of a drainage tool 10 embodying the present invention will be described with reference to Figs.

[0011] Figure 1 shows a schematic diagram of the area around balcony B of an apartment building. The apartment building has a wall W that separates the balcony B from the room, with an air conditioner indoor unit (not shown) installed on the indoor side of the wall W, and an air conditioner outdoor unit E installed on the balcony B. A drain hose H is connected to the air conditioner indoor unit and outdoor unit E. A drain groove D is formed in the floor surface F on the outside of the balcony B, running along the length of the balcony B. The balcony B is sloped so that it is slightly lower from the inside to the outside, and due to this slope, wastewater discharged onto the balcony B and rainwater that falls on the balcony B will flow from the inside to the outside of the balcony B and fall into the drain groove D.

[0012] As shown in FIG. 1, a drainage device 10 is disposed on the floor surface F of the balcony B in the depth direction connecting the indoor side to the outdoor side of the balcony B. A drainage flow path 11 is formed within this drainage device 10. A hose receiver 40 is attached to the indoor side end of the drainage device 10, and the lower ends of both drainage hoses H are connected to this hose receiver 40. The outdoor side end of the drainage device 10 opens into the drainage groove D of the balcony B. Therefore, wastewater is introduced into the drainage device 10 via the drainage hose H and the hose receiver 40, and is discharged into the drainage groove D of the balcony B through the drainage flow path 11 within the drainage device 10. (Regarding drainage device 10)

[0013] As shown in the cross-sectional views of Figures 2 and 3, the drainage device 10 has a hollow structure with a drainage flow path 11 formed therein. The cross-sectional shape of the drainage device 10 shown in Figures 2 and 3 is continuously formed in the depth direction, which is a direction perpendicular to this cross-sectional shape. Therefore, unless otherwise specified, the structure of the drainage device 10 in the following description has the cross-sectional shape shown in Figures 2 and 3, and this cross-sectional shape is continuously formed in the depth direction of the drainage device 10 (the direction perpendicular to the cross sections of Figures 2 and 3).

[0014] As shown in Figures 2 and 3, the drainage tool 10 is composed of a drainage tool body 20 that is installed on the floor surface F of the balcony B, and a cover 30 that is combined with the drainage tool body 20. The combination of the drainage tool body 20 and the cover 30 forms a hollow drainage flow path 11 inside the drainage tool 10. Both the drainage tool body 20 and the cover 30 are made of polyvinyl chloride colored gray or brown, etc., and are flexible and elastically deformable. In addition to polyvinyl chloride, thermoplastic elastomers such as polystyrene, polyolefin, polyurethane, and polyester can also be used.

[0015] As shown in FIG. 2, the drainage tool body 20 and the cover 30 are symmetrical with respect to an imaginary line L that passes vertically through the center of the drainage tool 10 in the width direction (left and right direction in FIG. 2). (Regarding the drainage tool body 20)

[0016] As shown in Figures 2 and 3, the drainage tool body 20 is a lower component of the drainage tool 10, and is a component that is installed on the floor surface F of the balcony B. For this reason, the contact surface 21 of the drainage tool body 20 is a flat surface. Also, as shown in Figure 1, the drainage tool body 20 is formed as a solid body having an elongated shape in the depth direction.

[0017] As shown in FIG. 3, the placement parts 22 are formed on both outer sides of the drainage tool body 20 in the width direction. At the outer end of each placement part 22, an end face 23 is formed that rises vertically upward from the ground surface 21. The upper surface of each placement part 22 becomes the placement surface 22a on which the cover 30 is placed when the cover 30 is seated on the drainage tool body 20 from above. Each placement surface 22a is formed in the range from the outer end 22b that contacts the end face 23 in the width direction to the part that contacts the base 24a of the engagement protrusion 24 described later, and the part that contacts the base 24a of the engagement protrusion 24 is called the inner end 22c. The height of each placement surface 22a is different between the outer end 22b and the inner end 22c. Specifically, the height of each end face 23 is the same as the height (e.g., 2.5 mm) of the floor material M that is placed on the balcony B in contact with the drainage tool 10, and the outer end 22b of each placement surface 22a is also the same height. Each mounting surface 22a is an inclined surface whose height gradually decreases from the outer end 22b toward the inner end 22c inward in the width direction, with the inner end 22c having the lowest height (e.g., 2.0 mm). In other words, the vertical thickness of each mounting portion 22 (the height from the ground surface 21 to the mounting surface 22a) is the thickest at the outer end 22b and gradually becomes thinner toward the inner side in the width direction, with the inner end 22c being the thinnest.

[0018] A pair of engaging protrusions 24 is formed on the widthwise inner side of each mounting portion 22 of the drainage tool body 20. This pair of engaging protrusions 24 constitutes a pair of first engaging portions. Specifically, each engaging protrusion 24 is composed of a base portion 24a that rises upward in contact with the inner end 22c of each mounting surface 22a, and a claw portion 24b that is formed at the upper end of this base portion 24a and protrudes outward in the widthwise direction from the base portion 24a. Each claw portion 24b is formed so that its thickness decreases as it goes outward in the widthwise direction.

[0019] A groove 25 that constitutes the drainage flow path 11 is formed on the widthwise inner side of both engaging protrusions 24. The groove 25 is composed of a bottom 25a having a substantially flat bottom surface that is lower than the inner end 22c of the mounting surface 22a of the mounting portion 22, i.e., is formed to be thin, and a pair of side walls 25b formed on both widthwise outer sides of the bottom 25a. Each side wall 25b is also an inner wall surface of the base 24a of each engaging protrusion 24.

[0020] In addition, at the widthwise center of the groove 25 (which is also the widthwise center of the drainage tool body 20), a recess 26 is formed with slopes on both sides and is lower than the bottom 25a, i.e., thinner. This recess 26 serves to position the support part 37, which will be described later, when it is seated in the groove 25. (About Cover 30)

[0021] As shown in Fig. 3, the cover 30 is a solid member having an upwardly convex arch shape as a whole. Also, as shown in Fig. 1, the cover 30 has a shape that is long in the depth direction. The upper surface 31 of the cover 30 has a gentle upwardly convex circular arc shape, and five convex stripes 32 having a rectangular cross section that protrude upward at approximately equal intervals in the width direction are formed. Also, a coating layer 33 having a thickness of, for example, about 0.2 mm is formed on the upper surface 31 of the cover 30, including the convex stripes 32. This coating layer 33 is a layer of transparent vinyl chloride resin mixed with fine particles of colored vinyl chloride resin, such as dark gray.

[0022] The cover 30 has seating portions 34 protruding downward on both sides in the width direction. Each seating portion 34 has a seating surface 34a that faces downward, which is a portion that seats on the mounting surface 22a of each mounting portion 22 of the drainage tool body 20. Each seating surface 34a is an inclined surface like each mounting surface 22a. Specifically, both seating surfaces 34a are not parallel surfaces, but are inclined surfaces that face downward toward the center in the width direction in Figs. 2 and 3. Each seating surface 34a is formed to match the inclination angle of each mounting surface 22a, and when the cover 30 is combined with the drainage tool body 20 as shown in Fig. 2, each seating surface 34a of the cover 30 and each mounting surface 22a of the drainage tool body 20 come into surface contact. In addition, each seating surface 34a has a semicircular hollowed-out portion 34b formed to reduce the weight of the cover 30.

[0023] In the cover 30, an engagement recess 35 is formed on the widthwise inner side and above each seating portion 34. The pair of engagement recesses 35 constitute a pair of second engagement portions. Each engagement recess 35 has a bottom shape recessed outward in the widthwise direction above the inner end of each seating portion 34, and the vertical distance between them becomes shorter toward the bottom 35a. The two claw portions 24b of the drainage tool body 20 can be engaged with the two engagement recesses 35 from the widthwise inner side. In other words, the pair of engagement protrusions 24 formed on the drainage tool body 20 engage with the pair of engagement recesses 35 formed on the cover 30 from the widthwise inner side, thereby assembling the cover 30 to the drainage tool body 20. At the same time, when the claw portions 24b of the drainage tool body 20 are inserted into the engagement recesses 35, the portions located on the widthwise inner side of the two seating portions 34 of the cover 30 enter and engage between the two placement surfaces 22a of the drainage tool body 20 and the claw portions 24b of the engagement protrusions 24 as shown in FIG. 2.

[0024] The lower surface 36 of the cover 30, which continues from the pair of engagement recesses 35 inward in the width direction, is formed with a constant thickness and is approximately parallel to the upper surface 31 of the cover 30. The lower surface 36 of the cover 30 forms a hollow drainage flow path 11 between the groove portion 25 of the drainage tool body 20, and the lower surface 36 of the cover 30 constitutes the ceiling surface of the drainage flow path 11. A support portion 37 having a rectangular cross section and protruding downward from the lower surface 36 is formed in the center of the width direction of the cover 30. When a load acts on the cover 30 from above and the cover 30 deforms downward, the support portion 37 abuts against the recess 26 of the drainage tool body 20, thereby preventing deformation of the cover 30 and preventing blockage of the drainage flow path 11. In the normal assembly state shown in FIG. 2, the lower end of the support portion 37 is not seated on the recess 26 of the drainage tool body 20 and is in a floating state. The width of the support portion 37 is formed shorter than the width of the recess 26. (Regarding the hose holder 40)

[0025] Hose receiver 40 shown in Figures 4(a), 4(b), and 4(c) is used to connect drain hose H and drainage tool 10. Hose receiver 40 consists of receiver body 41 and insertion part 42 protruding from receiver body 41.

[0026] Specifically, the receiving device main body 41 is formed in approximately the same shape as the cross-sectional outer periphery of the drainage device 10 shown in Fig. 2, with the upper surface forming a gently upwardly convex arc shape, the lower surface being flat, and wall surfaces of a constant height on both outer sides in the width direction. In addition, the receiving device main body 41 has two hose connection pipes 43 that open upward and are arranged side by side in the depth direction. The hose connection pipes 43 can be connected by fitting the drainage hose H inside or outside, and each pipe has a different height.

[0027] The insertion part 42 is in the form of a hollow tongue that can be inserted into the drainage flow path 11 of the drainage tool 10 shown in Fig. 2. A connection flow path 44 that penetrates the receiver body 41 and the insertion part 42 is formed inside the two, one end of this connection flow path 44 opens at the tip of the insertion part 42, and the other end communicates with each hose connection pipe 43. A notch 45 is formed on the upper surface of the insertion part 42 to prevent interference with the support part 37 hanging down from the lower surface 36 of the cover 30 when the insertion part 42 is inserted into the drainage flow path 11.

[0028] When the hose receiver 40 is attached to the drainage tool 10 and the drainage hose H is fitted into the hose receiver 40, the drainage water can flow from the drainage hose H into the hose receiver 40 and further into the drainage flow path 11 of the drainage tool 10. (Regarding the manufacture of the drainage device 10)

[0029] The drainage tool 10 can be made by extruding the drainage tool body 20 and the cover 30 separately and then assembling them together. The coating layer 33 formed on the cover 30 can be laminated to the cover 30 by extrusion molding at the same time as the cover 30 is extruded. Since the drainage tool body 20 and the cover 30 are both continuously formed by extrusion molding, there is no particular limit to the length in the depth direction. During the extrusion molding process, the drainage tool body 20 and the cover 30 are cut to a length suitable for transportation, storage, etc., for example, every 10 meters. Then, the drainage tool body 20 and the cover 30 can be individually wound in a spiral shape and packaged, stored, and transported separately. (How to install the drainage device 10 on the balcony B) A method for installing the drainage device 10 of this embodiment on the balcony B of an apartment building will be described.

[0030] The drainage tool body 20 and the cover 30 are each individually (as shown in FIG. 3) wound in a spiral shape to a fixed length and packed, etc. This is unwound at the construction site, and the drainage tool body 20 and the cover 30 are each cut to fit the length of the balcony B. When the hose receiver 40 is used, the length is determined by subtracting the length of the receiver body 41 from the length of the balcony B.

[0031] The installation procedure is as follows: first, the drainage tool body 20 is fixed to the floor surface F of the balcony B using adhesive. Next, the hose receiver 40 is installed. Specifically, the insertion portion 42 is placed over the groove portion 25 of the drainage tool body 20, and the hose receiver 40 is fixed to the floor surface F of the balcony B on the wall W side using adhesive. Then, the cover 30 is attached from above the drainage tool body 20. Next, the flooring material M is cut along the end surface 23 of the drainage tool body 20 and laid on the floor surface F of the balcony B as shown in Figures 1 and 2.

[0032] In addition, the drainage tool body 20 and the cover 30 can be assembled by elastically deforming either or both of the engaging protrusions 24 and the engaging recesses 35. In addition, the drainage tool body 20 and the cover 30 can be arranged offset in the lengthwise direction, and assembled by sliding them in the lengthwise direction with the engaging protrusions 24 of the drainage tool body 20 engaged with the engaging recesses 35 of the cover 30. According to the drainage device 10 of the above embodiment, the following effects can be obtained.

[0033] (1) In the above embodiment, the drainage tool 10 is composed of the drainage tool body 20 and the cover 30, and the drainage flow path 11 is formed between the drainage tool body 20 and the cover 30. The drainage tool body 20 has a pair of engaging protrusions 24, and the cover 30 has a pair of engaging recesses 35 that can engage with the pair of engaging protrusions 24. The drainage tool body 20 also has a mounting surface 22a that contacts the inner end 22c from the outer end 22b on the outside in the width direction, and the height of the mounting surface 22a is lower at the inner end 22c than at the outer end 22b. Therefore, even if the engaging recesses 35 of the cover 30 are engaged with the engaging protrusions 24 of the drainage tool body 20, the cover 30 can be assembled at a lower position by the difference in height between the outer end 22b and the inner end 22c, and the overall height of the drainage tool 10 can be reduced.

[0034] (2) Furthermore, even if it is necessary to form the outer end 22b of the drainage device main body 20 at a constant height, such as by matching the height of each end face 23 of the drainage device main body 20 with the height of the floor material M, the overall height of the drainage device 10 can be reduced.

[0035] (3) The engaging protrusion 24 engages with the engaging recess 35 from the inside in the width direction, and the engaging protrusion 24 is composed of a base 24a extending upward from the drainage tool body 20 and a claw portion 24b extending outward in the width direction from the base 24a. The engaging recess 35 is recessed outward in the width direction in the cover 30, and can engage with the claw portion 24b. The cover 30 that is placed from above is fitted onto the drainage tool body 20 from the outside, so that the work of engaging and removing the cover 30 with respect to the drainage tool body 20 is easy. In addition, since the engaging protrusion 24 and the engaging recess 35 are not exposed to the outside when the cover 30 is placed on the drainage tool body 20, the foot or the like does not directly come into contact with the engaging protrusion 24 and the engaging recess 35, and the engagement is difficult to be released.

[0036] (4) The upper surface of the drainage tool body 20 on the widthwise outer side of the pair of engaging protrusions 24 is the mounting surface 22a on which the cover 30 is placed, and the cover 30 is formed with a seating surface 34a that seats on the mounting surface 22a. The mounting surface 22a and the seating surface 34a are inclined surfaces that become lower in height from the widthwise outer side to the widthwise inner side. Therefore, the mounting surface 22a and the seating surface 34a come into surface contact with each other, and the contact is stable, and the cover can be placed or seated even if the mounting surface 22a and the seating surface 34a are slightly misaligned in the widthwise direction.

[0037] (5) The drainage tool body 20 has a groove 25 that constitutes the drainage flow path 11 between a pair of engaging protrusions 24, and the underside 36 of the cover 30 that constitutes the drainage flow path 11 has a support portion 37 that hangs down toward the groove portion 25. Even if the cover 30 is subjected to a load from above and deforms downward, the support portion 37 abuts against the groove portion 25, more specifically, the recess 26, preventing further downward deformation of the cover 30. This prevents blockage of the drainage flow path 11 due to deformation of the cover 30.

[0038] (6) The support portion 37 is not in contact with the groove portion 25 when no load is applied from above to the cover 30. This allows a wide area to be secured along the bottom surface of the groove portion 25 that constitutes the drainage passage 11, improving the flow of drainage.

[0039] (7) A coating layer 33 is formed on the upper surface of the cover 30. The coating layer 33 is a layer of transparent polyvinyl chloride resin mixed with fine particles of colored polyvinyl chloride resin such as dark gray. This allows the upper surface of the drainage device 10 to have a design that matches the design of the floor material M or the floor surface F of the balcony B.

[0040] (8) The upper surface 31 of the cover 30 is formed with ridges 32, each having a rectangular cross section, which protrude upward and are spaced at approximately equal intervals in the width direction. Therefore, even when a foot is placed on the drainage device 10, the ridges 32 function as an anti-slip surface.

[0041] (9) When a load is applied to the cover 30 from above, the cover 30 elastically deforms downward and the support portion 37 seats in the recess 26 of the groove portion 25. Therefore, when the support portion 37 seats in the groove portion 25, it is positioned and seats in the recess 26, which makes it easier to prevent the support portion 37 from seating at an angle. (10) The upper surface 31 of the cover 30 is formed in a gently curved upward convex shape, which makes it difficult for a person's foot or the like to get caught in the cover 30. The above embodiment may be modified as follows. The number and shape of the protrusions 32 formed on the upper surface 31 of the cover 30 may be changed. For example, the cross section may be triangular or semicircular.

[0042] Although the support portion 37 is not in contact with the groove portion 25 when no load is applied to the cover 30 from above, the support portion 37 may be configured to be in contact with the groove portion 25 in the same state, i.e., to be seated in the recess portion 26. The recess portion 26 is formed for positioning the support portion 37 when it is seated in the groove portion 25, but the recess portion 26 may be omitted.

[0043] If the support portion 37 is not in contact with the groove portion 25 when no load is applied from above to the cover 30, the recess 26 of the groove portion 25 may not be provided and the support portion 37 may be shortened by the amount that would have been required for the recess 26.

[0044] Each of the placement surfaces 22a and the seating surfaces 34a is an inclined surface, but it is not limited to an inclined surface, and various shapes such as a step shape combining a flat surface and a vertical surface, a cross-sectional arc shape, or a combination of multiple shapes can be used. In this case, it is preferable that the placement surface 22a and the seating surface 34a have a shape that makes surface contact with each other.

[0045] Although the drainage tool main body 20 is provided with a pair of engaging protrusions 24 and the cover 30 is provided with a pair of engaging recesses 35, this is not limited to the above. For example, in the above embodiment, the portions of the cover 30 located on the widthwise inner side of the pair of seating portions 34 are inserted and engaged between the pair of mounting surfaces 22a of the drainage tool main body 20 and the claw portions 24b of the engaging protrusions 24. In this configuration, it can also be said that the cover 30 has a pair of engaging protrusions (portions located on the widthwise inner side of the seating portions 34) and the drainage tool main body 20 has a pair of engaging recesses (between the mounting surfaces 22a and the claw portions 24b).

[0046] The materials used for the drainage tool body 20 and the cover 30 can be selected arbitrarily as necessary. The drainage tool body 20 and the cover 30 may be formed using the same material, or may be formed using different materials.

[0047] The coating layer 33 formed on the top surface of the cover 30 may be omitted, or even if the coating layer 33 is used, the shape or color of the particles contained therein may be changed. Furthermore, when forming the coating layer 33, a transparent resin or an opaque resin that does not contain particles may be coated to form a transparent layer or an opaque layer. The drainage device 10 may be used in a corridor, a rooftop, etc., other than the balcony B. Also, the drainage device 10 may be used not only for an air conditioner but also for a water heater or the like.

[0048] Below are the problems that the invention aims to solve, the means for solving the problems, the description of the effects of the invention in the original specification of the original application (paragraphs 0006 to 0012 of the original specification of the original application), and the description of the claims in the original specification of the original application.

[0049]

[0006] However, when the drainage tool is of a split type, it is necessary to provide an engagement portion between the drainage tool body and the cover, which causes a problem that the overall height of the drainage tool becomes high. In view of the above problems, an object of the present invention is to provide a drainage tool whose overall height can be reduced.

[0050] (0007) The invention for solving the above problem is a drainage tool including a drainage tool main body and a cover forming a drainage flow path between the drainage tool main body and the cover, the drainage tool main body having a pair of first engagement parts, the cover having a pair of second engagement parts engageable with the pair of first engagement parts, the drainage tool main body having an upper surface that contacts the bases of the first engagement parts from an outer end of the drainage tool main body in the width direction, and the height of the upper surface at a portion that contacts the bases of the first engagement parts is lower than the outer end of the drainage tool main body in the width direction. This reduces the overall height of the drainage tool when the cover is engaged with the drainage tool main body.

[0051] (0008) The pair of first engaging portions engage with the pair of second engaging portions from the inside in the width direction, and the first engaging portions are engaging protrusions consisting of a base portion extending upward from the drain body and a claw portion extending outward in the width direction from the base portion, and the second engaging portions are engaging recesses recessed outward in the width direction and capable of engaging the claw portions. As a result, the engaging protrusions of the drain body engage with the engaging recesses of the cover 30.

[0052] (0009) A mounting surface on which the cover is placed is formed on the upper surface of the drainage tool body outside the pair of first engagement parts in the width direction, and a seating surface that seats on the mounting surface is formed on the cover, and the mounting surface and the seating surface are inclined surfaces that decrease in height from the outside in the width direction to the inside in the width direction. As a result, the mounting surface and the seating surface, which are inclined surfaces, are in surface contact with each other.

[0053] (0010) The drainage tool body has a groove portion that forms a drainage flow path between the pair of first engagement portions, and the underside of the cover that forms the drainage flow path has a support portion that hangs down toward the groove portion. This prevents the cover from being deformed by the support portion even when a downward load is applied to the cover.

[0054] The support portion is not in contact with the groove when no load is applied to the cover from above, thereby ensuring a wide area along the bottom surface of the groove when no load is applied to the cover from above.

[0012] According to the drainage tool of the present invention, the overall height of the drainage tool can be reduced. (Technical thought 1) A drainage tool comprising a drainage tool body and a cover that forms a drainage flow path between the drainage tool body, The drainage tool body has a pair of first engagement portions, the cover has a pair of second engagement portions engageable with the pair of first engagement portions, The drainage tool body has an upper surface extending from an outer end of the drainage tool body in a width direction to a portion contacting a base portion of the first engagement portion, A drainage tool in which the height of the upper surface is lower at a portion where the upper surface contacts the base of the first engagement portion than at an outer end of the drainage tool body in the width direction. (Technical thought 2) The pair of first engagement portions engage with the pair of second engagement portions from inside in the width direction, The first engagement portion is an engagement protrusion including a base portion extending upward from the drainage tool body and a claw portion extending outward in the width direction from the base portion, The drainage tool according to Technical Idea 1, wherein the second engagement portion is an engagement recess that is recessed outward in the width direction and is capable of engaging with the claw portion. (Technical Thought 3) A mounting surface on which the cover is placed is formed on an upper surface of the drainage tool body that is outward in the width direction from the pair of first engagement portions, the cover is formed with a seating surface that seats on the placement surface, The drainage tool according to Technical Idea 1, wherein the placement surface and the seating surface are inclined surfaces whose height decreases from the outer side in the width direction to the inner side in the width direction. (Technical Thought 4)

[0055] The drainage tool described in technical idea 1, wherein the drainage tool main body has a groove portion between the pair of first engagement portions that constitute the drainage flow path, and the underside of the cover that constitutes the drainage flow path has a support portion that hangs down toward the groove portion. (Technical Thought 5) The drainage tool according to Technical Idea 4, wherein the support portion is not in contact with the groove portion when no load is applied to the cover from above. [Explanation of symbols]

[0056] 10...Drainage equipment 11...Drainage channel 20 Drainage device body 21...ground plane 22...Placement section 22a: Placement surface (upper surface) 22b...outer end (end) 22c: Inner end (part that contacts the base) 23...end face 24...Engagement convex part (first engagement part) 24a...Base 24b...Claw part 25 Groove 30. Cover 31...Top surface 34 Seating section 34a Seating surface 35 Engagement recess (second engagement portion) 36... Bottom (bottom of cover) 37...Support part B...Balcony D...Drain F...Floor surface H···Drain hose M···Flooring

Claims

1. A drainage tool comprising a drainage tool body and a cover that forms a drainage flow path between the drainage tool body, The drainage tool body has a pair of first engagement portions, The cover is a drainage tool having a pair of second engagement portions that can be engaged with the pair of first engagement portions by external fitting.

2. 2. The drainage device according to claim 1, wherein the upper surface of the cover is formed in an upwardly convex arc shape.

3. 3. The drainage tool according to claim 1, wherein the upper surface of the cover is formed with upwardly protruding ridges at approximately equal intervals in the width direction.

Images