JP5977656B2 - Storage material and storage infiltration facility provided with the same - Google Patents

Description

  The present invention relates to a storage material constituting a storage and penetration facility buried in the ground and a storage and penetration facility including the storage material.

  Conventionally, a storage and penetration facility buried in the ground, such as a rainwater storage tank that stores rainwater or a rainwater storage and penetration tank that temporarily stores rainwater and then permeates into the ground, is known. . In general, this type of storage and infiltration facility has a water-permeable or water-permeable sheet placed in a hole formed by digging the ground (hereinafter referred to as a pit), and a plurality of storage materials placed on the sheet, It is configured by covering the storage material with a sheet. After the storage and penetration facility is installed, the storage and penetration facility is buried by placing soil on the sheet and filling the pits.

  Earth pressure is applied to the sheet above the storage material from above. The portion of the sheet above the storage material is supported by the storage material, but the portion located above the gap between the adjacent storage materials is not supported. For this reason, if there is a large gap between adjacent storage materials, a part of the sheet may enter the gap and bend downward greatly, and the sheet may be damaged. Therefore, conventionally, the storage materials are connected with a connecting tool so that a large gap is not left between adjacent storage materials.

  Patent Document 1 discloses an H-type connector as a connector for connecting the storage materials to each other. Each storage material is formed with a connector insertion hole, and the storage materials are connected to each other by fitting one H-shaped connector into the connection tool insertion hole of two adjacent storage materials. Patent Document 2 discloses a horizontal coupler having a shape in which left and right end portions of a long horizontal plate are bent substantially at a right angle downward. A hole is formed in the storage material, and the storage material is connected to each other by fitting a horizontal connector from above into the hole of the adjacent storage material.

  However, if a connecting member separate from the storage material is used for connecting the storage material, the number of parts will be increased. Patent Document 3 discloses a storage material in which connecting portions are integrally formed. According to such a storage material, a separate connector is not necessary. Specifically, the storage material disclosed in Patent Document 3 includes a face plate member having a concave portion and a convex portion corresponding to each other on two opposite sides. By fitting the convex portion of the other face plate member into the concave portion of the adjacent face plate member, the face plate members are connected to each other without a gap.

Japanese Patent No. 4041351 JP 2012-52349 A JP 2005-16084 A

  By the way, depending on the situation of the construction site, the pit where the storage and penetration facility is installed is not necessarily straight, and there are cases where it is desired to arrange a plurality of storage materials in a somewhat curved shape. Further, unevenness (that is, unevenness of the surface) may occur in the pit, and at least a part of the storage material may be desired to be installed in a slightly inclined posture from the vertical direction according to the unevenness.

  If the storage material is connected to the storage material using a separate connector, the storage material may be arranged in a slightly curved shape or a part of the storage by appropriately changing the attachment location of the connector. It is possible to install the material in a slightly inclined posture from the vertical direction. However, according to the structure in which the storage materials are connected to each other using the connecting portion provided in the storage material itself (in other words, the connection portion integrated with the storage material), the connecting portion cannot be changed appropriately. For this reason, it is difficult to finely adjust the storage material arrangement direction and finely adjust the installation posture of the storage material according to unevenness. Therefore, although the number of parts can be reduced, there is a problem that it can be installed only in a place where the storage material can be arranged in a straight line.

  The present invention has been made in view of such a point, and the object of the present invention is to reduce the number of parts of the storage and penetration facility and to store the storage material capable of finely adjusting the arrangement direction and the installation posture, and the storage provided therewith. To provide an infiltration facility.

  A storage material according to the present invention has a first side wall and a second side wall located on the opposite side of the first side wall, and a box body having a water passage hole penetrating inside and outside, and the first side wall. One of the adjacent storage materials, comprising: a first engaging portion formed integrally; and a second engaging portion formed integrally with the second side wall and engageable with the first engaging portion. The first engaging portion and the other second engaging portion are connected to each other so as to be connected to each other. The first engaging portion includes an extending portion that extends outward from the first side wall, and a first stopper portion that is provided at a distal end of the extending portion and has a larger width than the extending portion. The second engagement portion is provided with an engagement hole having a width larger than that of the extending portion and smaller than that of the first stopper portion, and another adjacent storage material provided on the back side of the engagement hole. It has the 2nd stopper part which opposes the 1st stopper part of another storage material through a clearance in the state connected so that it may approach most.

  According to the storage material, the first engagement portion is engaged with the second engagement portion of another storage material adjacent to the first storage portion, and / or the second storage portion is adjacent to the second engagement portion. By engaging with one engaging part, it is connected with another storage material. The first engaging portion is formed integrally with the first side wall, and the second engaging portion is formed integrally with the second side wall. Therefore, a separate connector is not necessary, and the number of parts can be reduced. The first stopper portion of the first engagement portion and the second stopper portion of the second engagement portion face each other via a clearance in a state where adjacent storage materials are connected so as to be closest to each other. Therefore, it is possible to move both storage materials in a direction away from each other by the clearance. Therefore, the relative position between the storage materials can be finely adjusted. Therefore, it is possible to finely adjust the storage material arrangement direction and the installation posture. On the other hand, when the first stopper portion and the second stopper portion come into contact with each other (in other words, when the clearance disappears), further relative movement of both the storage materials is restricted. Therefore, it is possible to prevent a large interval between the two storage materials. From the above, it is possible to provide a storage material that can reduce the number of parts of the storage and penetration facility and can finely adjust the arrangement direction and the installation posture.

  According to a preferred aspect of the present invention, two or more of the first engaging portions and the second engaging portions are provided.

  This can prevent the storage material from being twisted around the extended portion of the first engaging portion. Therefore, the storage materials can be stably connected.

  According to another preferable aspect of the present invention, the side on which the first side wall and the second side wall are provided is a front side and a rear side, respectively, and the first side wall and the second side wall are a left end region and a left center. The first engaging portion and the second engaging portion are located in the left central region and the right central region when the region, the right central region, and the right end region are equally divided into four.

  When the clearances have the same size, the first side wall and the second side are located more on the center side than on the first side wall and the second side. A large amount of relative displacement of the outer portion of the two side walls can be ensured. By positioning the first engagement portion and the second engagement portion in the left center region and the right center region as described above, a large degree of freedom in the position of the storage material can be ensured. Moreover, the storage material can be connected with good balance by disposing the first engagement portion and the second engagement portion on the left and right sides of the center line, respectively.

  According to another preferable aspect of the present invention, the extending portion is composed of a bar-like body extending straight, the first stopper portion is formed in a flat plate shape orthogonal to the rod-like body, and the engagement hole is It consists of a hole formed in the second side wall, and the second stopper portion is formed by an edge of the hole in the second side wall.

  This makes it possible to obtain the first engagement portion and the second engagement portion that connect the storage materials so as not to leave a large gap while securing the degree of freedom of the mutual positions with a simple configuration.

  According to another preferable aspect of the present invention, the first engaging portion and the second engaging portion are provided at the lower portions of the first side wall and the second side wall, respectively. The engagement hole is a hole opened downward.

  Thus, the first engagement portion and the second engagement portion can be engaged by a simple operation of covering the extension hole of the first engagement portion with the engagement hole of the second engagement portion. it can. The storage materials can be connected to each other by a simple operation.

  According to another preferable aspect of the present invention, a clearance is provided between the extending portion of the first engagement portion and the inner surface of the engagement hole of the second engagement portion.

  As a result, the first engaging portion and the second engaging portion can be relatively moved not only in a direction approaching and separating from each other but also in a direction perpendicular to the direction. Adjacent reservoirs can move relative to each other not only in the direction in which the extending portion of the first engaging portion extends, but also in the direction perpendicular to the direction in which the extending portion of the first engaging portion extends. Therefore, it is possible to further ensure the degree of freedom of the storage material installation position and installation posture.

  According to another preferable aspect of the present invention, the box body includes a bottom plate and a side plate erected on the bottom plate, and the first engagement portion and the second engagement portion are It is provided on the bottom plate.

  Accordingly, since the first engaging portion and the second engaging portion are provided on the bottom plate near the bottom surface of the pit, the position and posture of the storage material can be finely adjusted according to the unevenness of the bottom surface of the pit. It becomes easy.

  According to another preferable aspect of the present invention, the box includes, as the side plate, a first side plate that forms part of the first side wall, and a second side plate that forms part of the second side wall. , A third side plate located between the first side plate and the second side plate, a fourth side plate located between the first side plate and the second side plate and located on the opposite side of the third side plate. And. Maintenance holes that open downward toward the bottom plate are formed in the first side plate and the second side plate.

  According to the storage material, maintenance equipment (for example, a self-propelled camera for observing the inside of the storage material, a jet nozzle for cleaning mud accumulated at the bottom, etc.) can be introduced through the maintenance hole. Becomes easy. Since the maintenance holes are formed in the first side plate and the second side plate, the maintenance holes are arranged in the storage material arrangement direction. Therefore, when the storage material is arranged in a curved line, the maintenance holes are also arranged in a curved line. Since the positions of the maintenance holes do not greatly deviate between adjacent storage materials, maintenance can be performed even if the storage material is arranged in a curved line.

  According to another preferable aspect of the present invention, the first engagement portion and the second engagement portion are provided below the maintenance hole.

  Accordingly, even when the relative displacement amount between the adjacent storage materials is large, the positions of the maintenance holes of the storage materials are prevented from greatly deviating. Therefore, even if the storage material arrangement direction is curved, maintenance can be performed satisfactorily.

  According to another preferred aspect of the present invention, the bottom plate is formed with a groove extending from below the maintenance hole of the first side plate to below the maintenance hole of the second side plate. When the bottom plate is viewed along the longitudinal direction of the groove, at least a part of the first engagement portion and the second engagement portion are provided outside the groove.

  The groove can be used, for example, as a passage for guiding maintenance equipment, and can play a role of collecting mud and the like accumulated at the bottom of the storage material. According to the said structure, a 1st engaging part and a 2nd engaging part do not get in the way of a groove | channel easily. Therefore, the groove can be formed satisfactorily.

  The storage and penetration facility according to the present invention is a storage and penetration facility buried in the ground, each made of the storage material, and the first engagement portion is engaged with the second engagement portion of the other storage material, The second engagement portion further includes a plurality of storage materials connected to each other by engaging the first engagement portion of another storage material, and a sheet that covers the periphery of the storage material.

  As a result, it is possible to obtain a storage and infiltration facility capable of curvilinear arrangement and unevenness while reducing the number of parts.

  ADVANTAGE OF THE INVENTION According to this invention, the number of parts of a storage penetration facility can be reduced, and the storage material which can finely adjust an arrangement direction and an installation attitude | position, and a storage penetration facility provided with the same can be provided.

It is a side view of the storage penetration tank concerning an embodiment. It is a front view of the storage penetration tank concerning an embodiment. It is a top view of the storage penetration tank concerning an embodiment. It is a top view of a baseplate. It is a front view of a baseplate. It is a back view of a bottom plate. It is a rear view of a bottom plate. It is a right view of a bottom plate. It is a front perspective view of a bottom plate. It is a rear perspective view of a bottom plate. It is a horizontal sectional view of the 1st engaging part. It is a horizontal sectional view of the 2nd engaging part. It is a figure showing the engagement state of a 1st engagement part and a 2nd engagement part, (a) represents the state where storage materials approached most, (b) represents the state where storage materials separated most. It is a side view which exaggerates and shows the installation posture of the storage material corresponding to non-land. It is a horizontal sectional view of the 1st engaging part and the 2nd engaging part concerning other embodiments.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the storage and penetration facility according to the present embodiment is a rainwater storage and penetration tank (hereinafter simply referred to as a storage and penetration tank) that is buried in the ground and temporarily stores rainwater and then penetrates into the ground. 1. The storage permeation tank 1 includes a plurality of storage materials 10 connected to each other and a water-permeable sheet 2 that covers the plurality of storage materials 10. In the present embodiment, a resin sheet 2 having a thickness of 4 mm or less is used. However, the thickness and material of the sheet 2 are not particularly limited. The storage permeation tank 1 lays a water-permeable sheet 2 on a pit 5 (see FIGS. 2 and 3) formed by digging the ground, and after installing a plurality of storage materials 10 on the sheet 2, the storage materials 10 is configured by covering the sheet 2 on the surface. In this embodiment, the storage material 10 is arrange | positioned at the groove-shaped pit 5, and the storage material 10 is connected to one direction.

  Although the storage material 10 may be arranged linearly, as shown in FIG. 3, the pits 5 according to the present embodiment are formed in a curved shape. In the present embodiment, the storage material 10 is arranged in a curved shape in accordance with the shape of the pit 5. In FIG. 1 and FIG. 3, only three storage materials 10 are illustrated, but actually four or more storage materials 10 are installed. However, the number of installed storage materials 10 is not limited at all.

  As shown in FIG. 1, 3 is attached to the storage material 10 located on one end side. A lid 4 is fitted in the upper opening of the first 3. Although illustration is omitted, the lower opening of 3 is open inside the storage material 10. As shown in FIG. 2, a pipe 6 for introducing rainwater is connected to the side 3. Reference sign GL represents the ground.

  As shown in FIG. 2, the storage material 10 includes a box 11 in which water-permeable holes 12 penetrating inside and outside are formed. The box 11 is formed in a vertically long, substantially rectangular parallelepiped shape. However, the box 11 only needs to have a shape in which a space is formed inside, and the shape of the box 11 is not limited to a vertically long, substantially rectangular parallelepiped shape. The shape of the box 11 may be a horizontally long substantially rectangular parallelepiped shape, a substantially cubic shape, or another shape.

  In the following description, the front side, back side, left side, and right side in FIG. 2 are defined as the front side, rear side, left side, and right side, respectively. The box 11 includes a bottom plate 20, a front plate 13, a rear plate 14 (see FIG. 1), a left plate 15, a right plate 16, and a top plate 17. The front plate 13 and the right plate 16 are formed integrally, and the rear plate 14 and the left plate 15 are formed integrally. The integrated front plate 13 and right plate 16, integrated rear plate 14 and left plate 15, bottom plate 20, and top plate 17 are separate bodies and assembled afterwards. However, the bottom plate 20, the front plate 13, the rear plate 14, the left plate 15, the right plate 16, and the top plate 17 can be appropriately integrated or separated, and their assembly structure is not limited at all. Absent. The box 11 may be a single body, or may be formed by assembling a plurality of members as in this embodiment. The bottom plate 20, the front plate 13, the rear plate 14, the left plate 15, the right plate 16, and the top plate 17 are all made of resin. That is, the storage material 10 is made of resin. However, the material of the storage material 10 is not limited to resin, and part or all of the storage material 10 may be made of a material other than resin.

  The box 11 includes a front wall, a rear wall, a left wall, and a right wall. The front wall of the box 11 is constituted by the front wall of the bottom plate 20, the front wall of the front plate 13, and the front wall of the top plate 17. The rear wall of the box 11 is composed of a rear wall of the bottom plate 20, a rear wall of the rear plate 14, and a rear wall of the top plate 17. The front wall and the rear wall of the box are examples of the “first side wall” and the “second side wall” according to the present invention, respectively.

  FIG. 4 is a plan view of the bottom plate 20. As shown in FIG. 4, the bottom plate 20 is formed in a substantially square shape when viewed from above. However, the shape of the bottom plate 20 as viewed from above is not limited to a substantially square shape, and may be a substantially rectangular shape or another shape. Grooves 21 extending in the front-rear direction are formed at the left and right centers of the bottom plate 20. The groove 21 extends from the front end to the rear end of the bottom plate 20. When the bottom plate 20 is equally divided into left and right, the groove 21 is formed in the central region. FIG. 5 is a front view of the bottom plate 20. As shown in FIG. 5, inclined surfaces 22L and 22R are provided on the left and right sides of the groove 21, respectively. The left inclined surface 22L is inclined obliquely downward to the right, and the right inclined surface 22R is inclined obliquely downward to the left. A left bottom surface 23L is provided to the left of the left inclined surface 22L, and a right bottom surface 23R is provided to the right of the right inclined surface 22R. In the present embodiment, the left bottom surface 23L is an inclined surface inclined obliquely downward to the right, and the right bottom surface 23R is an inclined surface inclined obliquely downward to the left. However, the left bottom surface 23L and the right bottom surface 23R can be horizontal.

  As shown in FIG. 4, insertion grooves 24 </ b> L and 24 </ b> R are formed around the bottom plate 20 except for the groove 21 and the vicinity of the groove 21. The insertion grooves 24L and 24R are each formed in a U-shape in plan view. The left insertion groove 24L is configured such that the lower end of the left half of the front plate 13, the lower end of the left plate 15, and the lower end of the left half of the rear plate 14 are inserted. The right insertion groove 24R is configured such that the lower end of the right half of the front plate 13, the lower end of the right plate 16, and the lower end of the right half of the rear plate 14 are inserted.

  FIG. 6 is a rear view of the bottom plate 20. As shown in FIG. 6, a plurality of ribs 25 are provided on the back side portion of the bottom plate 20. These ribs 25 increase the rigidity of the bottom plate 20.

  The storage material 10 includes a first engagement portion 30 and a second engagement portion 40 as a connecting means with another storage material 10. Next, the 1st engaging part 30 and the 2nd engaging part 40 are demonstrated.

  As shown in FIGS. 4 and 9, the first engagement portion 30 is provided on the front wall 20 f of the bottom plate 20. However, the 1st engaging part 30 should just be formed in the front wall of the box 11, and may be provided in the lower part of the front board 13, for example. The first engagement portion 30 is formed integrally with the bottom plate 20. Here, in the present specification, “being formed integrally” means being formed so as to be handled integrally when the storage materials 10 are connected to each other. In other words, it means that the storage material 10 is formed so as to be handled as if it were an integral object during the connecting operation. The first engaging portion 30 and the bottom plate 20 may be integrally formed, or may be separately formed and then joined by adhesion or the like.

  In the present embodiment, two first engaging portions 30 are provided on the bottom plate 20. However, the number of the first engaging portions 30 is not limited to two. The number of the first engaging portions 30 may be one, or may be three or more. In the present embodiment, one first engaging portion 30 is provided on each of the left and right sides of the center line CL of the bottom plate 20. Further, as shown in FIG. 5, when the front wall 20f of the bottom plate 20 is divided into the left end region A1, the left center region A2, the right center region A3, and the right end region A4 into four equal parts to the left and right, the first engaging portion 30 is provided. Are located in the left central region A2 and the right central region A3.

  FIG. 11 is a horizontal sectional view of the first engagement portion 30. As shown in FIG. 11, the first engagement portion 30 includes an extension portion 31 (see FIG. 8) that extends outward (that is, the front side) from the front wall 20 f of the bottom plate 20, and a first portion provided at the tip of the extension portion 31. And a stopper portion 32. In this embodiment, the extending | stretching part 31 consists of a rod-shaped body extended straight, and two are provided. The extending portion 31 is made of a rod-shaped body having a rectangular cross section, but may of course be a rod-shaped body having a circular cross section. Further, the extending portion 31 is a width of the extending portion 31 (hereinafter, unless otherwise specified, the width of the extending portion 31 means the entire width of the extending portion 31) D1 described later. What is necessary is just to be smaller than the width | variety D2 (refer FIG. 12) of the engagement hole 41 of the joint part 40, and the one part or all part may be bent. The 1st stopper part 32 is formed in the flat form orthogonal to the extending | stretching part 31 of a rod-shaped body. The width D3 of the first stopper portion 32 is larger than the width D1 of the extending portion 31. The first stopper portion 32 has portions 32 a located on the left and right sides of the extending portion 31.

  FIG. 7 is a rear view of the bottom plate 20. As shown in FIGS. 6, 7, and 10, the second engaging portion 40 is provided on the rear wall 20 b of the bottom plate 20. The second engaging portion 40 is formed integrally with the rear wall 20 b of the bottom plate 20. However, the 2nd engaging part 40 should just be formed in the rear wall of the box 11, and may be provided in the lower part of the rear board 14, for example. The second engaging portion 40 is formed at a position opposite to the first engaging portion 30. That is, the second engaging portion 40 is provided at a position corresponding to the first engaging portion 30 so that the adjacent storage materials 10 are connected to each other via the first engaging portion 30 and the second engaging portion 40. It has been. Similar to the first engagement portion 30, two second engagement portions 40 are provided. However, the number of the second engaging portions 40 can be appropriately changed according to the number of the first engaging portions 30. One second engaging portion 40 is provided on each of the left and right sides of the center line CL of the bottom plate 20. As shown in FIG. 7, when the rear wall 20b of the bottom plate 20 is divided into left and right parts A1, left center area A2, right center area A3, and right end area A4, the second engagement portion 40 is left It is located in the central area A2 and the right central area A3.

  FIG. 12 is a horizontal sectional view of the second engaging portion 40. As shown in FIG. 12, the second engagement portion 40 includes an engagement hole 41 formed in the rear wall 20 b of the bottom plate 20, and a second stopper portion 42 formed of an edge portion of the engagement hole 41. . As shown in FIG. 7, the engagement hole 41 is a rectangular hole opened downward. As shown in FIG. 12, the width D <b> 2 of the engagement hole 41 is larger than the width D <b> 1 of the extending portion 31 of the first engagement portion 30 and smaller than the width D <b> 3 of the first stopper portion 32. A thickness L2 of the rear wall 20b is shorter than a length L1 of the extending portion 31 of the first engaging portion 30.

  FIGS. 13A and 13B are views showing a state in which the first engagement portion 30 and the second engagement portion 40 are engaged. FIG. 13A illustrates a state in which the front wall 20f of one bottom plate 20 of the adjacent storage material 10 is in contact with the rear wall 20b of the other bottom plate 20, that is, a state in which the adjacent storage materials 10 are closest to each other. ing. FIG. 13B shows a state in which one first stopper portion 32 of the adjacent storage material 10 is in contact with the other second stopper portion 42, that is, a state in which the adjacent storage materials 10 are most separated from each other. .

  The length L1 of the extending portion 31 of the first engaging portion 30 is larger than the thickness L2 of the rear wall 20b. As shown in FIG. 13A, a clearance C <b> 1 is provided between the first stopper portion 32 and the second stopper portion 42 in a state where adjacent storage materials 10 are closest to each other. In the present embodiment, since the length of the extending portion 31 of the first engaging portion 30 is L1 and the thickness of the rear wall 20b of the bottom plate 20 is L2, clearance C1 = L1−L2. Although the magnitude | size of the clearance C1 is not specifically limited, For example, it can be 1 cm-10 cm. The size of the clearance C1 may be 3 cm or more or 5 cm or more, and may be 8 cm or less or 6 cm or less. Since the clearance C1 is provided between the first stopper portion 32 of the first engagement portion 30 and the second stopper portion 42 of the second engagement portion 40, the storage materials 10 are connected to each other. Relative movement is possible back and forth. That is, the storage materials 10 can move relative to each other in a direction toward and away from each other.

  In the present embodiment, the width D2 of the engagement hole 41 of the second engagement portion 40 is larger than the width D1 of the extending portion 31 of the first engagement portion 30. As shown in FIG. 13A, a clearance C <b> 2 is provided between the extending portion 31 and the inner surface of the engagement hole 41. Therefore, the storage materials 10 can move relative to each other in the connected state. That is, the storage materials 10 can move relative to each other in the direction of shifting laterally. The clearance C2 is set smaller than the clearance C1.

  As described above, the width D3 of the first stopper portion 32 is larger than the width D2 of the engagement hole 41. As shown in FIG. 13B, when the storage materials 10 move relative to each other in a direction away from each other by the clearance C1, the first stopper portion 32 and the second stopper portion 42 come into contact with each other. The first stopper portion 32 and the second stopper portion 42 prevent the connection between the storage materials 10 from being released and restrict the storage materials 10 from being separated too much.

  Thus, the 1st engaging part 30 and the 2nd engaging part 40 are engaged so that relative movement is possible in the front-back direction. The first engaging portion 30 and the second engaging portion 40 are engaged so as to be relatively movable in the left-right direction. Moreover, the 1st engaging part 30 and the 2nd engaging part 40 are engaged so that the relative movement within a predetermined range is possible. That is, the first engaging portion 30 and the second engaging portion 40 are engaged so that the relative position can be finely adjusted while restricting the mutual engagement from being released. The above is the configuration of the first engaging portion 30 and the second engaging portion 40.

  As shown in FIG. 2, maintenance holes 18 are formed in the front plate 13. The maintenance hole 18 allows maintenance equipment (for example, a self-propelled camera for observing the inside of the storage material 10, a jet nozzle for cleaning mud collected at the bottom of the storage material 10) from the outside of the storage material 10. It plays a role of being introduced inside and derived from inside to outside. Although not shown, a similar maintenance hole 18 is formed in the rear plate 14. Thus, among the front part, the rear part, the left part, and the right part of the box 11, the maintenance hole 18 is a part (that is, the front part) provided with the first engagement part 30 and the second part. It is formed in the part (namely, rear part) in which the engaging part 40 was provided. The maintenance hole 18 is formed above one end and the other end of the groove 21 of the bottom plate 20. In other words, the groove 21 of the bottom plate 20 extends from below the maintenance hole 18 of the front plate 13 to below the maintenance hole 18 of the rear plate 14. The maintenance hole 18 is formed in the lower part of the center of the front plate 13 and the rear plate 14 so as to be positioned above the groove 21 of the bottom plate 20 when viewed from the front. The maintenance hole 18 is a hole opened downward toward the bottom plate 20. In the present embodiment, the shape of the maintenance hole 18 is a semicircular shape, but the shape is not particularly limited. The width of the maintenance hole 18 is larger than the width of the groove 21.

  The first engagement portion 30 and the second engagement portion 40 are provided below the maintenance hole 18. As shown in FIG. 5 and FIG. 7, when the bottom plate 20 is viewed from the front and rear, in other words, when the bottom plate 20 is viewed along the longitudinal direction of the groove 21, the first engagement portion 30 and the second engagement portion. At least a part of the joining portion 40 is provided outside the groove 21. In the present embodiment, all of the first engaging portion 30 and all of the second engaging portion 40 are provided outside the groove 21 (that is, on the left side or the right side of the groove 21).

  The first engagement part 30 and the second engagement part 40 can be engaged by covering the extension hole 31 of the first engagement part 30 with the engagement hole 41 of the second engagement part 40. . Alternatively, the extension portion 31 of the first engagement portion 30 can be engaged by being inserted into the engagement hole 41 of the second engagement portion 40 from below.

  The storage permeation tank 1 can be constructed as follows, for example. First, the bottom plate 20 is installed on the bottom surface of the pit 5 on which the sheet 2 is laid. At this time, the bottom plate 20 is configured such that the extension hole 31 of the first engagement portion 30 of the bottom plate 20 installed earlier covers the engagement hole 41 of the second engagement portion 40 of the bottom plate 20 installed later. Will be installed sequentially. Thereby, the first engaging portion 30 and the second engaging portion 40 are engaged, and the adjacent bottom plates 20 are connected by the first engaging portion 30 and the second engaging portion 40. Next, the integrated front plate 13 and right plate 16 and the integrated rear plate 14 and left plate 15 are assembled to the connected bottom plates 20. Further, the top plate 17 is assembled to the front plate 13, the right plate 16, the rear plate 14, and the left plate 15. Thereby, the some storage material 10 can be arranged in the pit 5 in the state connected mutually. After the installation of the storage material 10 is completed, the sheet 2 is placed on the storage material 10 and the soil is placed thereon. That is, the pit 5 is backfilled. Thereby, construction of the storage penetration tank 1 is completed.

  As described above, according to the storage material 10 according to the present embodiment, the first engagement portion 30 includes the first engagement portion 30 and the second engagement portion 40 that are formed integrally with the bottom plate 20. And it is connected with the other storage material 10 by the 2nd engaging part 40. FIG. Therefore, when connecting with the other storage material 10, a separate connector is not necessary. According to the storage permeation tank 1 according to the present embodiment, a separate connector is not necessary, and therefore the number of parts can be reduced.

  The first engaging portion 30 and the second engaging portion 40 are not fitted with no gap, but in a state where the adjacent storage materials 10 are connected so as to be closest to each other, the first stopper portion 32 and the second engaging portion 30 are connected. The stopper portion 42 is engaged so as to face the clearance C1. Therefore, it is possible to move both the storage materials 10 in a direction away from each other (in the front-rear direction in the present embodiment) by the clearance C1. The storage materials 10 are connected so that the relative position can be finely adjusted.

  Therefore, according to this embodiment, the freedom degree of the installation position of the storage material 10 is securable. Thereby, fine adjustment in the arrangement direction of the storage material 10 becomes possible, and as shown in FIG. 3, the storage material 10 can be arranged in a curved shape. Depending on the situation of the construction site, the pit 5 may be formed in a curved shape instead of a linear shape. According to the storage material 10 according to the present embodiment, the storage material 10 can also be arranged in such a curved pit 5.

  Moreover, according to this embodiment, since the relative position of the storage materials 10 can be finely adjusted, the degree of freedom of the installation posture of the storage materials 10 can be ensured. Thereby, the storage material 10 can be installed in a posture corresponding to the unevenness of the bottom surface of the pit 5. For example, as shown exaggeratedly in FIG. 14, when a part 9a of the bottom surface 9 of the pit 5 is inclined from the horizontal plane, the storage material 10 is installed in an inclined posture so as to fit the inclined bottom surface 9a. Is possible.

  In addition, according to the present embodiment, the relative position between the storage materials 10 can be finely adjusted. However, when the distance between the bottom plates 20 of the storage material 10 increases, the first stopper portion 32 of the first engagement portion 30. And the second stopper portion 42 of the second engagement portion 40 are in contact with each other, and the distance between the bottom plates 20 is prevented from becoming too large. Therefore, it is possible to prevent a large interval from being left between adjacent storage materials 10. Therefore, although the sheet 2 receives pressure from above, the sheet 2 can be suitably supported. It is possible to prevent the sheet 2 from entering the gap between the storage materials 10 and being damaged.

  Therefore, according to the present embodiment, it is possible to obtain the storage permeation tank 1 capable of curvilinear arrangement and non-landscape correspondence while reducing the number of parts.

  By the way, although the number of the 1st engaging parts 30 and the 2nd engaging parts 40 with which the storage material 10 is provided may be respectively one, in this embodiment, it is two each. If two or more first engaging portions 30 and two second engaging portions 40 are provided, it is possible to reliably prevent the storage material 10 from rotating around the extending portion 31 of the first engaging portion 30. Can do. That is, it is possible to reliably prevent the storage materials 10 from being twisted. Therefore, the storage materials 10 can be stably connected.

  As shown in FIG. 5 and FIG. 7, when the front wall 20f and the rear wall 20b of the bottom plate 20 are divided into the left end area A1, the left center area A2, the right center area A3, and the right end area A4 in the left and right directions, The 1 engaging part 30 and the 2nd engaging part 40 are located in left center area | region A2 and right center area | region A3. Thereby, compared with the case where the 1st engagement part 30 and the 2nd engagement part 40 are located in left end area | region A1 and right end area | region A4, as shown in FIG. T can be increased. When the size of the clearance C1 between the first stopper portion 32 of the first engaging portion 30 and the second stopper portion 42 of the second engaging portion 40 is the same, the first engaging portion 30 and the second engaging portion Relative displacement amount of the left end or the right end of the storage materials 10 in the case where the portion 40 is located in the left center region A2 and the right center region A3 than in the case where the portion 40 is located in the left end region A1 and the right end region A4 (The size of the clearance T) can be increased. Therefore, according to this embodiment, the degree of freedom of the installation position of the storage material 10 can be further ensured.

  The shapes of the first engagement portion 30 and the second engagement portion 40 are not particularly limited, but in the present embodiment, the extending portion 31 of the first engagement portion 30 is formed of a rod-like body that extends straight, and the first stopper portion 32. Is formed in a flat plate shape perpendicular to the rod-shaped body. The engagement hole 41 of the second engagement portion 40 is a hole formed in the rear wall 20b of the bottom plate 20 constituting a part of the rear wall of the box body 11, and the second stopper portion 42 is formed on the rear wall 20b. It is formed by the edge of the hole. According to the present embodiment, the first engaging portion 30 and the second engaging portion 40 that connect the storage materials 10 to each other so as to prevent a large gap while ensuring the degree of freedom of the mutual positions are configured with a simple configuration. Can be obtained.

  The first engaging portion 30 and the second engaging portion 40 are provided on the front wall 20f and the rear wall 20b of the bottom plate 20 constituting the front wall and the bottom portion of the rear wall of the box body 11, respectively. The engaging hole 41 is a hole opened downward. Therefore, the first engaging portion 30 and the second engaging portion 40 are engaged by a simple operation of covering the extending portion 31 of the first engaging portion 30 with the engaging hole 41 of the second engaging portion 40. Can be combined. According to this embodiment, the storage materials 10 can be connected by a simple operation.

  As shown in FIG. 13A, a clearance C <b> 2 is provided between the extending portion 31 of the first engagement portion 30 and the inner surface of the engagement hole 41 of the second engagement portion 40. Therefore, the storage materials 10 are relatively movable not only in the front-rear direction (direction in which the extending portion 31 extends) but also in the left-right direction (direction perpendicular to the direction in which the extending portion 31 extends). Therefore, according to the present embodiment, it is possible to further ensure the degree of freedom of the installation position and installation posture of the storage material 10.

  Of the storage material 10, the bottom plate 20 is a member disposed in the vicinity of the bottom surface 9 of the pit 5. In the present embodiment, the first engagement portion 30 and the second engagement portion 40 are provided on the bottom plate 20. Therefore, it becomes easy to install the storage material 10 in a posture corresponding to the unevenness of the bottom surface 9 of the pit 5.

  As shown in FIG. 2, the front plate 13 constituting a part of the front wall of the box 11 and the rear plate 14 constituting a part of the rear wall of the box 11 are directed downward toward the bottom plate 20. An open maintenance hole 18 is formed. According to the storage material 10, maintenance equipment can be introduced through the maintenance hole 18, so that maintenance becomes easy. Further, since the maintenance holes 18 are arranged in the arrangement direction of the storage material 10 (the front-rear direction in this embodiment), when the arrangement direction of the storage material 10 is curved, the maintenance holes 18 are also arranged in a curve. Will be. Therefore, even when the storage materials 10 are arranged in a curved line, the maintenance hole 18 is not displaced and the maintenance hole 18 is not blocked. Therefore, even when the storage materials 10 are arranged in a curved line, maintenance devices can be sequentially passed through the maintenance holes 18 and maintenance can be performed.

  According to the present embodiment, the first engagement portion 30 and the second engagement portion 40 are provided below the maintenance hole 18. For this reason, even when the relative displacement amount between the adjacent storage materials 10 is large, the positions of the maintenance holes 18 of the storage materials 10 are prevented from being greatly displaced. Therefore, even if the arrangement direction of the storage material 10 is curved, the maintenance can be performed satisfactorily.

  Further, according to the present embodiment, the bottom plate 20 is formed with a groove 21 extending from below the maintenance hole 18 of the front plate 13 to below the maintenance hole 18 of the rear plate 14. The groove 21 can be used as a passage for guiding maintenance equipment, and plays a role of collecting mud and the like accumulated in the left and right bottoms of the storage material 10 in the center. In this embodiment, as shown in FIGS. 5 and 7, when the bottom plate 20 is viewed along the longitudinal direction of the groove 21, at least a part of the first engaging portion 30 and the second engaging portion 40 is a groove. 21 is provided outside. Therefore, the first engaging portion 30 and the second engaging portion 40 are unlikely to obstruct the groove 21. Therefore, the groove 21 can be formed satisfactorily.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and it is needless to say that the present invention can be implemented in various other forms. Next, another embodiment will be described.

  In the said embodiment, the 1st engaging part 30 was comprised by the two extending | stretching parts 31 which consist of a rod-shaped body with a rectangular cross section, and the 1st stopper part 32 of flat form. However, the configuration of the first engagement portion 30 is not particularly limited. For example, as shown in FIG. 15, the first engagement portion 30 is configured by a single round bar-shaped extending portion 31 and a spherical first stopper portion 32 provided at the tip of the extending portion 31. Also good. Even in such a configuration, fine adjustment of the relative position between the storage materials 10 is performed according to the size of the clearance C1 between the first stopper portion 32 and the second stopper portion 42 of the second engaging portion 40. Is possible.

  In the said embodiment, the engagement hole 41 of the 2nd engagement part 40 was a hole opened below. However, the shape of the engagement hole 41 is not particularly limited, and may be a hole whose entire periphery is closed. For example, the extending portion 31 of the first engaging portion 30 and the first stopper portion 32 are separate bodies, and after the extending portion 31 is inserted into the engaging hole 41, the first stopper portion 32 is attached to the distal end of the extending portion 31. You may make it attach.

  In the above-described embodiment, the storage material 10 includes two first engaging portions 30 and two second engaging portions 40. However, the storage material 10 may include three or more first engaging portions 30 and two second engaging portions 40. Further, the storage material 10 may include one first engaging portion 30 and one second engaging portion 40 one by one.

  As shown in FIG. 3, in the said embodiment, the storage material 10 was arranged in 1 row. However, the storage material 10 may be arranged in two or more rows. The first engagement portion 30 and the second engagement portion 40 can be provided not only on the front wall 20f and the rear wall 20b of the bottom plate 20 but also on one or the other of the left wall and the right wall. The first engaging portion 30 and the second engaging portion 40 are provided on one and the other of the front wall and the rear wall of the box body 11, respectively, and the first engagement is provided on one and the other of the left wall and the right wall of the box body 11, respectively. The joint portion 30 and the second engagement portion 40 may be provided.

  The storage and penetration facility according to the embodiment is the rainwater storage and penetration tank 1 that temporarily stores rainwater and then infiltrates it into the ground. However, the storage and penetration facility is not limited to the rainwater storage and penetration tank as long as it has a function of at least temporarily storing water. The storage and penetration facility according to the present invention may be a rainwater storage tank that stores rainwater without providing a penetration function. For example, instead of the water-permeable sheet 2, a rainwater storage tank having the same configuration as that of the above embodiment can be installed by using a water-impervious sheet. Moreover, the water which the storage penetration facility which concerns on this invention accumulates is not limited to rain water.

1 Rainwater storage and penetration tank (storage and penetration facility)
2 Sheet 10 Storage material 11 Box 12 Water-permeable hole 13 Front plate (first side plate)
14 Rear plate (second side plate)
15 Left plate (third side plate)
16 Right plate (4th side plate)
18 Maintenance hole 20 Bottom plate 21 Groove 30 First engagement portion 31 Extension portion 32 First stopper portion 40 Second engagement portion 41 Engagement hole 42 Second stopper portion C1 Clearance

Claims (11)

A box having a first side wall and a second side wall located on the opposite side of the first side wall, and having a water passage hole penetrating inside and outside;
A first engaging portion formed integrally with the first side wall;
A second engagement portion formed integrally with the second side wall and engageable with the first engagement portion,
A storage material connected to each other by engaging one first engagement portion and the other second engagement portion of adjacent storage materials,
The first engaging portion includes an extending portion extending outward from the first side wall, and a first stopper portion provided at a distal end of the extending portion and having a width larger than the extending portion,
The second engagement portion is provided with an engagement hole having a width larger than that of the extending portion and smaller than that of the first stopper portion, and another adjacent storage material provided on the back side of the engagement hole. Having a second stopper portion opposed to the first stopper portion of another storage material via a clearance in a state of being connected so as to be closest,
Between the inner surface of the engagement hole of the second engaging portion and the extending portion of the first engagement portion, it is provided clearance, storage material. The box has a bottom plate and a side plate erected on the bottom plate,
The storage material according to claim 1 , wherein the first engagement portion and the second engagement portion are provided on the bottom plate. The box includes, as the side plate, a first side plate that forms part of the first side wall, a second side plate that forms part of the second side wall, the first side plate, and the second side plate. A third side plate located between the first side plate and the second side plate, and a fourth side plate located on the opposite side of the third side plate,
The storage material according to claim 2 , wherein a maintenance hole that opens downward toward the bottom plate is formed in the first side plate and the second side plate. The bottom plate is formed with a groove extending from below the maintenance hole of the first side plate to below the maintenance hole of the second side plate,
When the bottom plate as viewed along the longitudinal direction of the groove, the first at least part of the engaging portion and the second engagement portion is provided outside the said groove, to claim 3 The storage material described. A box having a first side wall and a second side wall located on the opposite side of the first side wall, and having a water passage hole penetrating inside and outside;
A first engaging portion formed integrally with the first side wall;
A second engagement portion formed integrally with the second side wall and engageable with the first engagement portion,
A storage material connected to each other by engaging one first engagement portion and the other second engagement portion of adjacent storage materials,
The first engaging portion includes an extending portion extending outward from the first side wall, and a first stopper portion provided at a distal end of the extending portion and having a width larger than the extending portion,
The second engagement portion is provided with an engagement hole having a width larger than that of the extending portion and smaller than that of the first stopper portion, and another adjacent storage material provided on the back side of the engagement hole. Having a second stopper portion opposed to the first stopper portion of another storage material via a clearance in a state of being connected so as to be closest,
The box has a bottom plate and a side plate erected on the bottom plate,
The first engagement portion and the second engagement portion are provided on the bottom plate,
The box includes, as the side plate, a first side plate that forms part of the first side wall, a second side plate that forms part of the second side wall, the first side plate, and the second side plate. A third side plate located between the first side plate and the second side plate, and a fourth side plate located on the opposite side of the third side plate,
Maintenance holes opened downward toward the bottom plate are formed in the first side plate and the second side plate,
The bottom plate is formed with a groove extending from below the maintenance hole of the first side plate to below the maintenance hole of the second side plate,
It said bottom plate when viewed along the longitudinal direction of the groove, wherein at least a portion of said first engaging portion and the second engaging portion, wherein is provided outside the groove, the storage material. The storage material according to any one of claims 3 to 5, wherein the first engagement portion and the second engagement portion are provided below the maintenance hole. The storage material according to any one of claims 1 to 6 , comprising two or more each of the first engaging portion and the second engaging portion. The side on which the first side wall and the second side wall are provided is the front side and the rear side, respectively, and the first side wall and the second side wall are left and right in the left end region, left center region, right center region, and right end region The storage material according to claim 7 , wherein the first engaging portion and the second engaging portion are located in a left central region and a right central region when divided into four equal parts. The extending portion is composed of a rod-like body extending straight,
The first stopper portion is formed in a flat plate shape orthogonal to the rod-shaped body,
The engagement hole comprises a hole formed in the second side wall,
The storage material according to any one of claims 1 to 8 , wherein the second stopper portion is formed by an edge portion of the hole of the second side wall. The first engaging portion and the second engaging portion are provided at the lower portions of the first side wall and the second side wall, respectively.
The storage material according to any one of claims 1 to 9 , wherein the engagement hole of the second engagement portion is a hole opened downward. A storage and penetration facility buried underground,
It consists of the storage material as described in any one of Claims 1-10, respectively, a 1st engagement part is engaged with the 2nd engagement part of another storage material, and a 2nd engagement part is further another storage. A plurality of storage materials connected to each other by engaging the first engaging portion of the material;
A storage and penetration facility comprising a sheet covering the periphery of the storage material.

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