Unit block member for rainwater storage penetration facility, and rainwater storage penetration facility

Abstract

To provide a unit block member for a rainwater storage penetration facility that can be constructed with a unit block member height equivalent to one level by a new structure.SOLUTION: Unit block members 2 (3, 4) of a rainwater storage penetration facility are integrally provided with a lattice frame portion 21 (31, 41) formed in a lattice shape with one or more grids 21a (31a, 41a), and one or more protrusions 22 (32, 42) that are arranged at positions corresponding to the one or more grids 21a (31a, 41a) of the lattice frame portion 21 (31, 41) and protrude out of a surface of the lattice frame portion 21 (31, 41). The lattice frame portion 21 (31, 41) on the upper stage is configured to be placed on and fitted to the protrusion 22 (32, 42) on the lower state.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a unit block member used in a rainwater storage and infiltration facility. [Background technology]

[0002] Generally, rainwater storage and infiltration facilities are installed underground in public facilities such as roads, parks, and parking lots, and are composed of a large number of unit block members molded from plastic assembled horizontally and vertically. The components are then covered with a permeable and waterproof sheet, and rainwater is stored in the voids inside the facility. Various structures of unit block members have been developed for use in such rainwater storage and infiltration facilities.

[0003] For example, Patent Document 1 discloses a structure in which unit members that constitute a facility are arranged in close contact in the horizontal and vertical directions and connected to each other by joint members. In addition, as disclosed in Patent Document 2, the inventors of the present application have developed a unit block member in the form of a four-legged block having a square plate and four hollow cylindrical legs. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 10-252108 [Patent Document 2] Japanese Patent Publication No. 2022-12077 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the unit block members used in the rainwater storage and infiltration facilities of the prior art mentioned above are connected in an upside-down manner, so that the unit block members are basically two levels high, which makes it difficult to adapt to the conditions of the installation location and the required capacity.

[0006] Therefore, an object of the present invention is to provide a unit block member of a rainwater storage and infiltration facility that can be constructed with a unit block member height equivalent to one stage using a new structure. [Means for solving the problem]

[0007] In order to achieve the above-mentioned objective, the unit block member of the rainwater storage and infiltration facility of the present invention integrally comprises a lattice frame portion formed in a lattice shape having one or more squares, and one or more protrusions that are arranged at positions corresponding to one or more of the squares of the lattice frame portion and protrude outside the surface of the lattice frame portion, and is configured so that the upper lattice frame portion is placed on top of and fitted with the lower protrusion. [Effects of the Invention]

[0008] In this way, the unit block member of the rainwater storage and infiltration facility of the present invention integrally comprises a lattice frame formed in a lattice shape with one or more squares, and one or more protrusions arranged at positions corresponding to one or more squares of the lattice frame member and protruding outside the surface of the lattice frame member, and is configured so that an upper lattice frame member is placed on top of and fitted into a lower protrusion member. With this configuration, the unit block member of the rainwater storage and infiltration facility can be constructed with the height of a unit block member for one stage. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of a rainwater storage and infiltration facility according to an embodiment. [Figure 2] This is an oblique view of the rainwater storage and infiltration facility of the embodiment with the top plate and upper quarter block member removed. [Figure 3] This is an oblique view of the rainwater storage and infiltration facility of the embodiment with the upper half block member further removed. [Figure 4] FIG. 2 is a perspective view of a basic unit block member of the embodiment as seen from above. [Figure 5] FIG. 2 is a perspective view of a basic unit block member of the embodiment as seen from below. [Figure 6] FIG. 2 is a perspective view of the half block member of the embodiment as seen from above. [Figure 7] FIG. 2 is a perspective view of the half block member of the embodiment as viewed from below. [Figure 8] FIG. 2 is a perspective view of the quarter block member of the embodiment as seen from above. [Figure 9] FIG. 2 is a perspective view of the quarter block member of the embodiment as viewed from below. [Figure 10] FIG. 2 is a perspective view of the top plate of the embodiment as seen from above. [Figure 11] FIG. 10 is a plan view illustrating the positional relationship between an upper (basic) unit block member and a lower (basic) unit block member. [Figure 12] FIG. 10 is a perspective view illustrating the positional relationship between an upper (basic) unit block member and a lower (basic) unit block member. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the components described in the following examples are merely examples and are not intended to limit the technical scope of the present invention. [Example]

[0011] (Overall composition) First, the overall configuration of the rainwater storage and infiltration facility 1 will be described. As shown in Figures 1 to 3, the rainwater storage and infiltration facility 1 is configured in the shape of a three-dimensional rectangular parallelepiped overall, and is buried underground in public facilities such as roads, parks, and parking lots. The rainwater storage and infiltration facility 1 is completed by covering the entire facility with a waterproof sheet, a permeable sheet, and a protective sheet, and then backfilling. In addition to these, an inflow manhole and an outflow manhole are installed adjacent to the rainwater storage and infiltration facility 1, and an inspection manhole or the like is installed inside as needed, although this will not be described in the examples.

[0012] The rainwater storage and infiltration facility 1 of this embodiment is composed of a plurality of basic unit block members 2,... which are square in plan view, a plurality of half block members 3,... which are unit block members that are half the size of a square, a plurality of quarter block members 4,... which are unit block members that are a quarter of the size of a square, and a plurality of flat top plate members 5,... which are fitted to the top.

[0013] To explain a specific example of the arrangement, as shown in Figures 1 to 3, the lower tier is composed of four basic (1 / 1 size) unit block members 2, 2, 2, 2 arranged in two rows and two columns in a plane (XY directions) (see also Figure 11). In the upper tier, one basic unit block member 2 is installed at the center of the four basic unit block members 2, 2, 2, 2 in the lower tier. Furthermore, four half block members 3, 3, 3, 3 are installed adjacent to the four sides of the basic unit block member 2 in the upper tier, and four quarter block members 4, 4, 4, 4 are installed at the four corners. The configuration of each unit block member 2, 3, 4 will be explained below.

[0014] (Basic (1 / 1) size unit block material) As shown in Figures 4 and 5, the basic (1 / 1 size) unit block member 2 is made of synthetic resin and includes a lattice frame portion 21 formed in a square lattice shape overall, with nine 3x3 square cells 21a,..., and nine protrusions 22,..., that are arranged at positions corresponding to the 3x3 square cells 21a of the square lattice frame portion 21 and protrude out of the surface of the lattice frame portion 21. Here, "3x3 square cells" means that there are three rows of cells 21a,..., vertically, and three columns of cells 21a,..., horizontally. In other words, if the length of one side of the square cell 21a is L, then the length is 3L vertically and 3L horizontally.

[0015] The lattice frame portion 21 is partitioned into nine squares 21a, ..., arranged in three vertical rows and three horizontal rows. As shown in FIG. 5 , two types of fitting holes 21b, 21c are formed at the intersections of the lattice of the lattice frame portion 21. Specifically, fitting holes 21c are formed at four intersections near the center, into which rounded rectangular convex pieces 26 on the top surfaces 24 of the protrusions 22 at the corners (described later) fit. Meanwhile, fitting holes 21b are formed at eight intersections on the four peripheral sides, into which divided convex pieces 25a constituting groove portions 25 (described later) fit. Furthermore, fitting holes 21d are formed at the corners of the lattice frame portion 21. Divided convex pieces 35b, 45b (described later) fit into fitting holes 21d at these corners.

[0016] Nine trapezoidal (truncated pyramidal) protrusions 22 are integrally formed corresponding to the nine squares 21a of the lattice frame portion 21. Each protrusion 22 is composed of four support legs 23 extending from near the corners (intersections of the lattice) of the squares 21a of the lattice frame portion 21, and a top surface 24 supported by the four support legs 23. The four support legs 23 are tapered, inclining toward each other as they move away from the lattice frame portion 21. In this way, a load is distributed and transmitted from one top surface 24 of an upper row to the four protrusions 22 (top surfaces 24) of a lower row via the four support legs 23.

[0017] The top surfaces 24 of the protrusions 22 form the same plane, and this plane is approximately parallel to the plane of the lattice frame portion 21. Therefore, by placing and fitting the lattice frame portion 21 of the upper unit block member 2 (3, 4) on this plane, the unit block members 2 (3, 4) can be stacked (shifted by half) facing the same direction without being alternately upside down.

[0018] Of the nine top faces 24,..., four of the top faces 24... that correspond to the corners of the lattice frame portion 21 have rounded rectangular protruding pieces 26... formed on them. Meanwhile, of the nine top faces 24,..., four of the top faces 24... that correspond to the sides of the lattice frame portion 21 have grooves 25 formed in a direction perpendicular to the sides. More specifically, the grooves 25 are formed as gaps between two divided protruding pieces 25a,... Furthermore, of the nine top faces 24,..., one top face 24 that corresponds to the center of the lattice frame portion 21 has a circular hole 27 formed in it.

[0019] (Half size unit block material) As shown in Figures 6 and 7, the half block member 3, which serves as a half-size unit block member, is made of synthetic resin and includes a lattice frame portion 31 formed in a rectangular lattice shape with 3x1.5 square cells 31a, and three protrusions 32,..., positioned at positions corresponding to the 3x1.5 square cells 31a of the rectangular lattice frame portion 31 and protruding out of the surface of the lattice frame portion 31. Here, "3x1.5 square cells" means that there are three rows of cells 31a,..., in length, and one column of cells 31a plus half the length of the cells 31a in width. In other words, if the length of one side of the square cell 31a is L, then the length is 3L in length and 1.5L in width.

[0020] The lattice frame portion 31 defines three squares 31a, ..., arranged in three vertical columns and one and a half horizontal columns. As shown in Figure 7, two types of fitting holes 31b, 31c are formed at the intersections of the lattice of the lattice frame portion 31. That is, fitting holes 31c are formed at two intersections near the center, into which rounded rectangular convex pieces 36 (26, 46) on the top surfaces 34 of corner protrusions 32 (22, 42) described below fit. Meanwhile, fitting holes 31b are formed at four intersections on the three peripheral sides, into which divided convex pieces 35a (25a, 45a) constituting groove portions 35 (25, 45) described below fit.

[0021] Three trapezoidal (truncated pyramidal) protrusions 32 are integrally formed corresponding to the three squares 31a of the lattice frame 31. Each protrusion 32 is composed of four support legs 33 extending from near the corners (intersections of the lattice) of the squares 31a of the lattice frame 31, and a top surface 34 supported by the four support legs 33. The four support legs 33 are tapered, inclining toward each other as they move away from the lattice frame 31. In this way, a load is distributed and transmitted from one top surface 34 of the upper row to the four protrusions 32 (22, 42) (top surfaces 34 (24, 44) of the lower row) via the four support legs 33.

[0022] The top surfaces 34 of the three protrusions 32 form the same plane, and this plane is approximately parallel to the plane of the lattice frame portion 31. Therefore, by placing and fitting the lattice frame portion 31 of the upper unit block member 3 (2, 4) on this plane, the unit block members 3 (2, 4) can be stacked (shifted by half) facing the same direction without being alternately upside down.

[0023] Of the three top faces 34,..., rounded rectangular protruding pieces 36,... are formed on two of the top faces 34,... that correspond to both sides of the lattice frame portion 31. Meanwhile, of the three top faces 34,..., a groove 35 is formed in a direction perpendicular to the side on the central top face 34,... that corresponds to a side of the lattice frame portion 31. More specifically, the groove 35 is formed as a gap between two divided protruding pieces 35a,...

[0024] 6, a linear protruding frame portion 38 is integrally molded parallel to the long sides of the lattice frame portion 31, at the same level as the plane formed by the top surfaces 34 of the three protruding portions 32. Divided protruding pieces 35a, 35a are provided on the protruding frame portion 38 facing the rounded rectangular protruding pieces 36, 36 on both sides, and divided protruding pieces 35b, 35b (approximately half the size of divided protruding piece 35a) are provided facing the central groove portion 35.

[0025] (Quarter (1 / 4) size unit block material) As shown in Figures 8 and 9, the quarter block member 4, which serves as a quarter-sized unit block member, is made of synthetic resin and includes a lattice frame portion 41 formed in the shape of a small square lattice with 1.5x1.5 squares 41a, and one protrusion 42 that protrudes out of the surface of the lattice frame portion 41 and is positioned at a position corresponding to the 1.5x1.5 squares 41a of the small square lattice frame portion 41. Here, "1.5x1.5 squares" means that there are one row of squares 41a in the vertical direction plus half the length of the squares 41a, and one column of squares 41a in the horizontal direction plus half the length of the squares 41a. In other words, if the length of one side of the square squares 41a is L, then the length is 1.5L vertically and 1.5L horizontally.

[0026] The lattice frame portion 41 defines a grid of 1.5 rows and 1.5 columns, each consisting of a square 41a, . . . As shown in Fig. 9, two types of fitting holes 41b, 41c are formed at the intersections of the grid of the lattice frame portion 41. That is, at one intersection in the center, a fitting hole 41c is formed, into which a rounded rectangular convex piece 46 (26, 36) on a top surface 44 of a protrusion 42 (22, 32) (described later) fits. Meanwhile, at two intersections on two peripheral sides, fitting holes 41b are formed, into which divided convex pieces 45a (25a, 35a) constituting a groove portion 45 (25, 35) (described later) fit.

[0027] A single trapezoidal (truncated quadrangular pyramidal) protrusion 42 is integrally formed corresponding to each square 41a of the lattice frame 41. The protrusion 42 is composed of four support legs 43 extending from near the corners (intersections of the lattice) of the squares 41a of the lattice frame 41, and a top surface 44 supported by the four support legs 43. The four support legs 43 are tapered, inclining toward each other as they move away from the lattice frame 41. In this way, a load is distributed and transmitted from one top surface 44 of an upper row to the four protrusions 42 (22, 32) (top surfaces 44 (24, 34)) of a lower row via the four support legs 43.

[0028] The top surface 44 at the tip of the protrusion 42 forms a plane that is approximately parallel to the plane of the lattice frame portion 41. Therefore, by placing and fitting the lattice frame portion 41 of the upper unit block member 4 (2, 3) onto this plane, the unit block members 4 (2, 3) can be stacked (shifted by half) facing the same direction without being alternately upside down.

[0029] One top surface 44 is formed with a rounded rectangular protruding piece 46 .

[0030] 8, an L-shaped protruding frame portion 48 is integrally molded parallel to the orthogonal isosceles of the lattice frame portion 41, at the same level as the plane formed by the top surface 44 of one of the protruding portions 42. Divided protruding pieces 45a, 45a are provided on the protruding frame portion 48 opposite the rounded rectangular protruding piece 46, and divided protruding piece 45b (approximately half the size of divided protruding piece 45a) is provided at the corner.

[0031] As shown in FIG. 10 , the top plate member 5 is made of synthetic resin and has a flat main body 50 that is the same size as the lattice frame 21 of the basic unit block member 2. The main body 50 has thirteen rounded rectangular fitting holes 51c at the same positions as the nine protrusions 22 of the basic unit block member 2 and at the same positions as the four intersections near the center of the lattice frame 21. These fitting holes 51c are the same size as the fitting holes 21c of the basic unit block member 2, the fitting holes 31c of the half block member 3, and the fitting holes 41c of the quarter block member 4. Meanwhile, eight fitting holes 51b are formed at eight points dividing the four sides of the main body 50 into three equal parts, into which the divided protrusions 25a (35a, 45a) that form the grooves 25 (35, 45) fit.

[0032] (Positional relationship between upper and lower unit block members) Next, the positional relationship (fitting relationship) between the upper basic unit block member 2 and the lower basic unit block members 2, 2, 2, 2 in the rainwater storage and infiltration facility 1 of this embodiment will be described using Figures 11 and 12. Here, as shown by the chain lines in Figure 11, a case will be described in which four lower unit block members 2, 2, 2, 2 are lined up in a 2x2 matrix, and one upper unit block member 2 is placed on top of and fitted into them.

[0033] The upper unit block members 2 are installed so as to be offset by 1 / 2B (B is the overall width of the unit block members 2) from the arrangement of the lower unit block members 2. That is, as shown in Figures 11 and 12, the upper unit block members 2 are arranged so that the four corners of the lattice frame portion 21 overlap the centers of the circular holes 27 on the top surfaces 24 of the central protrusions 22 of the lower unit block members 2.

[0034] Specifically, the center of the circular hole 27 in the top surface 24 of the central protrusion 22 of the upper unit block member 2 is positioned on one joint point where the corners of the four lower unit block members 2 overlap. In other words, the position is determined by fitting the eight fitting holes 21b,... provided at the center of each side into the grooves 25,... of the lower unit block member 2.

[0035] (effect) Next, the effects of the unit block member 2 (3, 4) of the rainwater storage and infiltration facility of this embodiment will be listed and explained.

[0036] (1) As described above, the unit block members 2 (3, 4) of the rainwater storage and infiltration facility are integrally provided with a lattice frame portion 21 (31, 41) formed in a lattice shape with one or more squares 21a (31a, 41a) and one or more protrusions 22 (32, 42) that are positioned at positions corresponding to one or more squares 21a (31a, 41a) of the lattice frame portion 21 (31, 41) and protrude outward from the surface of the lattice frame portion 21 (31, 41). The upper lattice frame portion 21 (31, 41) is placed on and fitted to the lower protrusion 22 (32, 42). This configuration allows the construction of a rainwater storage and infiltration facility 1 that can be constructed with a single-level unit block member 2 (3, 4) height using a new structure. Furthermore, no special joints are required for assembly.

[0037] (2) Also, the unit block members 2 can be assembled without depending on the orientation of the unit block members 2 because the unit block members 2 are provided with a lattice frame portion 21 formed in a lattice shape with 3 vertical and 3 horizontal squares, and nine protrusions 22, ... that are arranged at positions corresponding to the 3 vertical and 3 horizontal squares 21a of the lattice frame portion 21.

[0038] (3) Furthermore, each of the protrusions 22 is composed of four support legs 23, ... extending from near the corners of each square 21a of the lattice frame portion 21 and a top surface 24 supported by the four support legs 23, ..., so that the load supported by one protrusion 22 on the upper level can be distributed and supported by the four protrusions 22, ... on the lower level.

[0039] (4) Furthermore, of the nine protrusions 22, grooves 25 are formed on the top surfaces 24 of the four central protrusions 22 on the four sides in a direction perpendicular to each side, and the grooves 25 are configured to fit into the lattice frame portions 21 (near the intersections), so that loads can be transmitted from the upper tier to the lower tier via the intersections of the lattice frame portions 21. Furthermore, by fitting into the grooves 25 extending in two directions, the X and Y directions, the unit block members 2 can be positioned without being displaced in the X or Y directions.

[0040] (5) Furthermore, the four support legs 23, ... that make up the protrusion 22 are formed at an angle so that they approach each other as they move away from the lattice frame portion 21, so that a large number of unit block members 2 (3, 4) can be stacked vertically for storage and transportation, resulting in excellent space utilization efficiency.

[0041] (6) Additionally, the half block member 3 has a lattice frame portion 31 formed in a lattice shape with 3×1.5 squares 31a, ···, and three protrusions 32, 32, 32 arranged at positions corresponding to the 3×1.5 squares 31a, ··· of the lattice frame portion 31 and protruding out of the surface of the lattice frame portion 31. This allows unit block members to be placed in peripheral areas where basic unit block members 2 cannot be installed.

[0042] (7) Additionally, the quarter block member 4 has a lattice frame portion 41 formed in a lattice shape with squares 41a of 1.5x1.5, and one protrusion 42 disposed at a position corresponding to the 1.5x1.5 squares 41a of the lattice frame portion 41 and protruding out of the surface of the lattice frame portion 41. This allows unit block members to be placed in corners and other places where basic unit block members 2 cannot be installed.

[0043] (8) Furthermore, the rainwater storage and infiltration facility 1, which is a combination of unit block members 2, ... of any of the rainwater storage and infiltration facilities (1) to (5) described above, is configured so that all corners of the lattice frame member 21 on the upper level are placed and fitted onto the top surface 24 of the central protrusion 22 of the nine protrusions 22 on the lower level. As a result, one unit block member 2 on the upper level is supported by four unit block members 2, 2, 2, 2 on the lower level, which allows the load to be distributed.

[0044] (9) Furthermore, half block members 3 are further arranged on the edges or corners of the outer periphery when viewed in a plan view, so that unit block members can be arranged in peripheral areas where basic unit block members 2 cannot be installed, thereby constructing a rainwater storage and infiltration facility 1.

[0045] (10) Similarly, quarter block members 4 are further arranged on the outer peripheral edges or corners in a plan view, so that unit block members can be arranged in corners and other areas where basic unit block members 2 cannot be installed.

[0046] Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes that do not deviate from the gist of the present invention are included in the present invention. [Explanation of symbols]

[0047] 1: Rainwater storage and infiltration facility 2: (Basic) unit block member 21: Lattice frame part 21a: Grid 21b: Fitting hole 21c: Fitting hole 21d: Fitting hole 22:Protrusion 23: Support leg 24:Top surface 25: Groove 25a: Split convex piece 26:Convex piece 27: Circular hole 3: Half block member (unit block member) 31: Lattice frame part 31a: Grid 31b: Fitting hole 31c: Fitting hole 32:Protrusion 33: Support leg 34:Top surface 35: Groove 35a: Split convex piece 35b: Split convex piece 36:Convex piece 38: Protruding frame 4: Quarter block member (unit block member) 41: Lattice frame part 41a: Grid 41b: Fitting hole 41c: Fitting hole 42:Protrusion 43:Support leg 44:Top surface 45: Groove 45a: Split convex piece 45b: Split convex piece 46:Convex piece 48: Protruding frame 5: Top plate material 50: Main body 51b: Fitting hole 51c: Fitting hole

Claims

1. a lattice frame portion formed in a lattice shape having one or more squares; and one or more protrusions that are disposed at positions corresponding to one or more of the squares of the lattice frame portion and that protrude out of the surface of the lattice frame portion, A unit block member of a rainwater storage and infiltration facility configured so that the upper lattice frame portion is placed on and fitted onto the lower protrusion portion.

2. A lattice frame portion formed in a lattice shape having 3 vertical and 3 horizontal squares; A unit block member of a rainwater storage and infiltration facility as described in claim 1, which is provided with nine protrusions that protrude outside the surface of the lattice frame portion and are arranged at positions corresponding to the 3x3 squares of the lattice frame portion.

3. A unit block member of a rainwater storage and infiltration facility as described in claim 2, wherein each of the protrusions is composed of four support legs extending from near the corners of each square of the lattice frame portion and a top surface supported by the four support legs.

4. A unit block member of a rainwater storage and infiltration facility as described in claim 3, wherein, of the nine protrusions, grooves are formed on the top surfaces of the four protrusions at the center of the four sides in a direction perpendicular to each side, and the lattice frame portion is configured to fit into the grooves.

5. 5. A unit block member of a rainwater storage and infiltration facility according to claim 4, wherein the four support legs constituting the protrusion are formed at an angle so as to approach each other as they move away from the lattice frame portion.

6. a lattice frame portion formed in a lattice shape having a 3×1.5 grid; A unit block member of a rainwater storage and infiltration facility as described in claim 1, which is provided with three protrusions that protrude outside the surface of the lattice frame portion and are arranged at positions corresponding to the 3 x 1.5 squares of the lattice frame portion.

7. a lattice frame portion formed in a lattice shape having squares of 1.5 vertical x 1.5 horizontal; A unit block member of a rainwater storage and infiltration facility as described in claim 1, which is provided with one protrusion that is positioned at a position corresponding to the 1.5cm x 1.5cm square of the lattice frame portion and protrudes outside the surface of the lattice frame portion.

8. A rainwater storage and infiltration facility comprising a combination of a plurality of unit block members of the rainwater storage and infiltration facility according to any one of claims 1 to 5, A rainwater storage and infiltration facility configured so that all corners of the upper lattice frame section are placed and fitted onto the top surface of the central protrusion of the nine protrusions in the lower section.

9. A rainwater storage and infiltration facility as described in claim 8, wherein a unit block member of the rainwater storage and infiltration facility as described in claim 6 is further arranged on the outer peripheral edge or corner portion in a plan view.

10. A rainwater storage and infiltration facility as described in claim 8, wherein unit block members of the rainwater storage and infiltration facility as described in claim 7 are further arranged on the sides or corners of the outer periphery when viewed in a plane.

Images