JP2016035203A - Filling member for underground water tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filling member for an underground water tank which is excellent in workability in which filling members adjacent in an oblique direction can be connected to each other only when the filling members are arranged in a horizontal direction (longitudinal/lateral direction) and in a vertical direction without using a connector, and the arrangement work in the horizontal direction can be easily performed since the filling members have no longitudinal/lateral directionality.SOLUTION: A filling member for an underground water tank comprises at least a square horizontal board part 1, and a connection protrusion 3a and a connection recess 3b for horizontal connection and a connection protrusion 4a and a connection recess 4b for oblique connection are integrally formed in each of division units where the horizontal board part 1 is divided into four division units with a longitudinal center line C1 and a lateral center line C2, and each division unit is shaped so as to be matched each time it rotates by every 90° with an intersection O between the longitudinal center line and the lateral center line as a center. Since the filling members have no longitudinal/lateral directionality, the arrangement work can be easily performed. The filling members adjacent in the horizontal direction are connected to each other by fitting the connection protrusion 3a to the connection recess 3b, and the filling members adjacent in the oblique direction are connected to each other by engaging the connection protrusion 4a with the connection recess 4b.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a filling member for a groundwater tank, and more particularly to a filling member that is disposed in a horizontal direction and a vertical direction to form a void structure inside a groundwater tank.

  As a filling member for this type of underground water tank, for example, a filling member in which a plurality of support legs are fitted and fixed to a square connecting frame is known (Patent Document 1). These filling members are arranged side by side in the horizontal direction (longitudinal and lateral directions) and stacked in the vertical direction to form a void structure inside the underground water tank. The filling members are connected to each other by inserting an H-shaped connector into a connector insertion hole formed in the connecting frame of the filler member.

JP 2000-192516 A

  However, the filling member disclosed in Patent Document 1 has a problem in that the number of parts is increased and the connecting work is troublesome and time-consuming because the adjacent filling members are connected in the horizontal direction using an H-shaped connector. It was. In addition, it is possible to connect the filling members that are adjacent to each other in the horizontal direction (longitudinal and lateral directions) with the H-shaped connector, and the connection with the filling member that is superimposed on or below the adjacent filling member in the horizontal direction (in other words, Then, there is a problem in that it is difficult to form a strong void structure because it is impossible to connect the filling member adjacent in the oblique direction.

  The present invention has been made in view of the above-mentioned problems, and the problem to be solved is that the filling is performed in the diagonal direction by simply arranging in the horizontal direction (vertical and horizontal directions) and the vertical direction without using a connector. An object of the present invention is to provide a filling member for a groundwater tank with good workability, in which members can be connected to each other, and because there is no vertical or horizontal directionality, horizontal arrangement work can be easily performed.

In order to solve the above problems, a filling member for a groundwater tank according to the present invention is a filling member that is disposed in a horizontal direction and a vertical direction to form a void structure inside the groundwater tank,
The filling member includes at least a horizontal plate portion, and the horizontal plate portions are arranged side by side and arranged in the horizontal direction, and the horizontal surfaces of the horizontal plate portions are combined, or one horizontal plane of the horizontal plate portion is And the tips of the leg portions protruding from the other horizontal surface of the horizontal plate portion are combined and arranged in the vertical direction,
Each of the partition units divided into four by the vertical center line and the horizontal center line of the horizontal plate part is a connecting projection for horizontal connection for connecting to the horizontal plate part of the filling member adjacent in the horizontal direction. And a connecting concave portion for connecting horizontally and a connecting convex portion for connecting obliquely for connecting with a horizontal plate portion of a filling member stacked on or below a horizontal plate portion of a filling member adjacent in the horizontal direction. The connecting concave portions are integrally formed, and each partition unit has a shape that matches each time it is rotated by 90 ° about the intersection of the vertical center line and the horizontal center line. It is what.

In the filling member for a groundwater tank of the present invention, the connecting protrusion for horizontal connection, the connecting recess for horizontal connection, and the connecting protrusion for oblique connection are formed on the side surface of each partition unit of the horizontal plate part, It is preferable that the connection recessed part for connection is formed in the horizontal surface of each division unit of a horizontal board part.
And the connection convex part for diagonal connection is an L-shaped connection convex part which protrudes in the horizontal direction from the side of each division unit of a horizontal board part, and is bent upwards or below, Comprising: Above this connection convex part, Or it is preferable that the front-end | tip of the bending part bent below has come out upward or downward from each division unit of the horizontal board | plate part.
In addition, the L-shaped connecting convex part for oblique connection forms the width of the tip part protruding in the horizontal direction from the side surface of each partition unit of the horizontal board part, thereby making the horizontal connection wider than the width of the base end part. A connecting concave part for horizontal connection, which is a connecting convex part for diagonal connection, and the width of the back end part is wider than the width of the opening end part corresponding to this connecting convex part. It is also preferable that it is formed on the side surface.
Further, the horizontal plate portion has no leg portion, and the tip of the bent portion of the L-shaped connecting convex portion for oblique connection is located above or from each partition unit of the horizontal plate portion not having the leg portion. It is also preferable that it protrudes downward.

  As in the groundwater tank filling member of the present invention, the connecting projection for horizontal connection and the connecting recess for horizontal connection for connecting to the horizontal plate portion of the adjacent filling member in the horizontal direction, and the adjacent in the horizontal direction. Connecting projections for oblique connection and slant for connecting with horizontal plate parts of the filling member (in other words, horizontal plate parts of the filling member adjacent in the oblique direction) stacked on or below the horizontal plate part of the filling member When the connecting concave portion for connection is formed integrally with each of the partition units that are divided into four by the vertical center line and the horizontal center line of the horizontal plate portion, without using a separate member connecting tool By simply arranging the filling member in the horizontal direction (vertical and lateral directions) and the vertical direction, the connecting convex part for horizontal connection fits into the connecting concave part for horizontal connection, and the connecting convex part for oblique connection is for diagonal connection. Fits in the connecting recess of the adjacent filling in the horizontal and diagonal directions It can be coupled to wood together. In addition, the filling member of the present invention has a horizontal center connecting projection and a recess, and four partition units of an oblique connection connecting protrusion and a connecting recess, each having a vertical center line. Since it has a shape that matches every 90 ° rotation about the intersection with the horizontal center line, there is no vertical and horizontal directionality, and horizontal (vertical and horizontal) layout work can be performed easily. And, since the connecting workability and connecting strength between the filling members adjacent in the oblique direction are improved by fitting the connecting convex part and the connecting concave part for oblique connection, a strong void structure is formed inside the underground water tank. It can be formed efficiently.

  And the connecting convex part for horizontal connection, the connecting concave part for horizontal connection, and the connecting convex part for diagonal connection are formed in the side of each division unit of a horizontal board part, and the connecting concave part for diagonal connection is a horizontal board part. The filling member formed on the horizontal surface of each partition unit is easy to injection-mold the horizontal plate portion, the respective connecting convex portions, and the respective connecting concave portions integrally with synthetic resin, and in particular, the connecting convex portions for oblique connection are horizontal. An L-shaped connecting convex portion that protrudes in the horizontal direction from the side surface of each partition unit of the panel portion and bends upward or downward, and the tip of the bent portion that is bent upward or downward of the connecting convex portion is a horizontal plate What protrudes upward or downward from each partition unit of the connecting portion is a connecting recess formed on the horizontal surface of each partition unit of the horizontal plate portion of the filling member adjacent to the oblique direction at the tip of the bent portion of the connecting protrusion And can be connected more easily and reliably.

In addition, the L-shaped connecting convex part for oblique connection forms the width of the tip part protruding in the horizontal direction from the side surface of each partition unit of the horizontal board part, thereby making the horizontal connection wider than the width of the base end part. A connecting concave part for horizontal connection, which is a connecting convex part for diagonal connection, and the width of the back end part is wider than the width of the opening end part corresponding to this connecting convex part. The filling member formed on the side surface of the horizontal connection member is arranged in the horizontal direction and the vertical direction. The horizontal projection is formed in the side surface of each partition unit of the horizontal plate portion so that the opening end of the horizontal plate is narrow and cannot be pulled out in the horizontal direction. Each section unit of the horizontal plate portion of the filling member where the bent portion of the portion is adjacent in the oblique direction Engages the coupling recess for oblique coupling formed in a horizontal plane, can be coupled to both the filling member that is horizontally adjacent to the filling member and the oblique side-by-side.
Further, the horizontal plate portion has no leg portion, and the tip of the bent portion of the L-shaped connecting convex portion for oblique connection is located above or from each partition unit of the horizontal plate portion not having the leg portion. Since the filling member which has come out below has no vertical directionality, the workability is good.

It is a perspective view of the filling member for underground water tanks concerning one embodiment of the present invention. It is a top view which shows one division unit when the same filling member is divided into four by the vertical centerline and the horizontal centerline. It is a schematic side view which shows an example of the space | gap structure inside a groundwater tank formed by arrange | positioning the said filling member in a horizontal direction and a vertical direction. It is the schematic plan view which showed the connection state of the horizontal direction (vertical / horizontal direction) of the filling member with the outline. It is a partial side view which shows the connection state of the filling member and the filling member which adjoins diagonally. It is a fragmentary perspective view of the filling member. It is a top view which shows one division unit when the filling member for underground water tanks which concerns on other embodiment of this invention is divided into four by the vertical centerline and the horizontal centerline. It is a fragmentary perspective view of the filling member. It is a side view of the filling member for underground water tanks which concerns on other embodiment of this invention. It is a top view of the filling member.

  Hereinafter, based on drawing, embodiment of the filling member for underground water tanks which concerns on this invention is described.

  FIG. 1 is a perspective view of a filling member for an underground water tank according to one embodiment of the present invention, and FIG. 2 shows one partition unit when the filling member is partitioned into four parts by a vertical center line and a horizontal center line. FIG. 3 is a schematic side view showing an example of a void structure inside the underground water tank formed by arranging the filling member in the horizontal direction and the vertical direction, and FIG. 4 is a horizontal view of the filling member ( FIG. 5 is a partial side view showing a connection state between the filling member and a filling member adjacent in an oblique direction, and FIG. 6 is a partial perspective view of the filling member. It is.

  The filling member for the underground water tank is injection-molded with a thermoplastic synthetic resin such as polypropylene, and as shown in FIG. 1, a horizontal board portion 1 having a square shape, specifically a square planar shape, A plurality of legs 2 are provided. In the present embodiment, a total of five leg portions 2 are formed at the four corners and the center of the horizontal plate portion 1, but for example, the central leg portion 2 is omitted to form four pieces, or four sides of the horizontal plate portion 1 are formed. What is necessary is just to form a desired number, such as adding a leg part to each intermediate part, and making it a total of nine.

  This horizontal board part 1 forms the grid | lattice part 1b which cross | intersects a vertical and horizontal direction inside the square quadrilateral frame part 1a, and water can move up and down through opening of this grid | lattice part 1b. As shown in FIG. 1, the four corners and the central opening of the lattice portion 1b are closed, and a hollow leg portion 2 protruding downward is integrally formed in each closed portion 1c. Since the leg 2 has an upper end (base end) opened and a water passage opening (not shown) is formed at the lower end (tip), water can move up and down in the leg 2. ing.

  In addition, the leg part 2 is not formed integrally with the closing part 1c of the horizontal board part 1, but a fitting hole is formed in the closing part 1c, and the leg part 2 manufactured separately is fitted and fixed to the fitting hole of the closing part 1c. Alternatively, a water passage hole (not shown) may be formed in the peripheral wall of the hollow leg 2 so that water can freely enter and exit the inside and outside of the leg 2. Moreover, the horizontal board | plate part 1 may form what formed many water flow holes in the square-shaped flat plate.

  As shown in FIG. 3, the filling member for the underground water tank according to this embodiment is arranged side by side in the horizontal direction (longitudinal and lateral directions) while aligning the side surfaces of the horizontal platen portion 1, and the upside down filling member and the upside down filling member. By alternately stacking filling members that are not allowed to be aligned, one horizontal surface (upper surface) of each horizontal plate portion 1 and the ends of leg portions 2 protruding from the other horizontal surface (lower surface) of each horizontal plate portion 1 are aligned. By arranging in a vertical direction, a void structure is formed inside a groundwater tank such as a rainwater storage tank or rainwater infiltration tank, and each filling member is for horizontal connection (for vertical and horizontal connection) described later. A solid void structure can be constructed because it is connected vertically, horizontally, vertically, and obliquely by a connecting convex portion and a connecting concave portion, a connecting convex portion and a connecting concave portion for vertical connection, and a connecting convex portion and a connecting concave portion for oblique connection. With things That.

  That is, as shown in FIG. 1, this groundwater tank filling member is a ant tenon for connecting the horizontal plate part 1 in the horizontal direction (vertical and horizontal directions) to the side surfaces on both sides across each corner of the horizontal plate part 1. The connecting projections 3a are shaped like a dovetail and the corresponding connecting recesses 3b are formed in a dovetail shape corresponding to the connecting projections 3a. Further, L-shaped connecting projections 4a for connecting to the horizontal platen 1 of the filling member adjacent in the diagonal direction are connected diagonally to the side surfaces on both sides across each corner of the horizontal platen 1. In this case, four concave portions 5 for avoiding interference with the L-shaped connecting convex portion 4a are formed one by one, and a total of four concave portions 5 are formed on the entire four circumferential side surfaces of the horizontal plate portion 1, and the filling members adjacent in the oblique direction are formed. The connecting recess 4b for connecting to the horizontal board part 1 is an upper surface (one horizontal plane) of the horizontal board part 1, specifically, a portion immediately before each connecting convex part 4a in the four-circumferential frame part 1a of the horizontal board part 1. A total of four are formed, one on the top surface. And, on the upper surface of the closed portion 1c at the four corners of the horizontal plate portion 1, a cylindrical connecting convex portion 6a for overlapping the upper surfaces (one horizontal plane) of the horizontal plate portion 1 and connecting them up and down, Corresponding circular hole-shaped connecting recesses 6b are formed one by one, for a total of four. Although not shown in the drawings, a connecting convex portion for connecting up and down and a connecting concave portion corresponding thereto are also formed at the tip of each leg portion 2.

  More specifically, as shown in FIG. 2, the filling member of this embodiment is divided into four units of the horizontal platen 1 divided into a vertical center line C <b> 1 and a horizontal center line C <b> 2. The connecting protrusion 3a for horizontal connection and the connecting recess 3b for horizontal connection, and the connecting protrusion 4a for oblique connection and the recess 5 for avoiding interference between the connecting protrusions 4a sandwich the corners of each partition unit. The connecting recesses 4b for oblique connection, and the connecting protrusions 6a and 6b for upper and lower connections are provided on the horizontal plane (upper surface) of each partition unit. Furthermore, one leg 2 at the corner and 1/4 of the center leg are formed downward from the horizontal plane (lower surface) of each partition unit. Thus, each partition unit of the horizontal plate portion 1 has a shape that matches each time it is rotated by 90 ° about the intersection O between the vertical center line C1 and the horizontal center line C2, When the filling member is inverted and the upper surface of the horizontal platen 1 is aligned, the connecting recess 6b of the other filling member is located at each position where the connecting projection 6a and the connecting recess 6b of one filling member are formed. The connecting convex portions 6a are formed so as to correspond to each other and are fitted to each other. Therefore, this filling member has no vertical and horizontal directions and can be easily arranged in the horizontal direction, so that the workability is good.

  As shown in FIGS. 1, 2, and 6, the connecting protrusion 4 a for oblique connection is formed in an L shape that protrudes in the horizontal direction from the side surface of each partition area of the horizontal platen 1 and bends upward. In addition, the tip of the bent portion 40a bent above the connecting convex portion 4a protrudes upward from each partition unit of the horizontal plate portion 1. And the connection recessed part 4b for diagonal connection is formed in the square hole shape provided with the rectangular opening in which the said bending part 40a fits.

  The L-shaped connecting convex portion 4a in this embodiment is bent upward as described above, that is, bent in the direction opposite to the leg portion 2, and the tip of the bent portion 40a is higher than each partition unit of the horizontal plate portion 1. However, in the case of a filling member composed of a horizontal board portion having no leg portion as will be described later, the bending direction of the L-shaped connecting convex portion 4a is not limited to the upper side (the direction opposite to the leg portion). It is only necessary to bend upward or downward, and the tip of the bent portion 40a only protrudes upward or downward from each partition unit of the horizontal board portion 1.

In this embodiment, the bent portion 40a of the L-shaped connecting convex portion 4a for oblique connection is formed in the shape of a rectangular projecting piece, but isosceles trapezoidal projecting piece whose width becomes narrower toward the tip. You may form in a shape. It is preferable to form the bent portion 40a in the shape of an isosceles trapezoidal protrusion because it is easy to fit into the connecting recess 4b having a square hole shape for oblique connection, and the connection workability is improved.
Further, in this embodiment, the connecting convex part 6a and the connecting concave part 6b for connecting the upper and lower parts are formed in a columnar shape and a circular hole shape. Correspondingly, the shape of the connecting recess 6b may be a polygonal hole having a triangular hole or more.

  As described above with reference to FIG. 3, the filling member for a groundwater tank having the above-described configuration is disposed in the horizontal direction (vertical and horizontal directions) and the vertical direction (vertical direction), and has a gap inside the groundwater tank. When constructing and arranging the structure, as shown in FIG. 4, the dovetail-shaped connecting projections 3 a for horizontally connecting the dovetail grooves of the filling members adjacent to each other in the vertical and horizontal directions (horizontal direction) The horizontal plate portions 1 and 1 of the filling member can be connected vertically and horizontally simply by fitting into the connecting recess 3b. The connecting operation in the vertical and horizontal directions (horizontal direction) can be efficiently performed because the horizontal plate portion 1 of the filling member does not have vertical and horizontal directions as described above. And the cylindrical connection convex part 6a for up-and-down connection and the connection convex part (not shown) of the front-end | tip of the leg part 2 are connected in the circular hole shape for the up-and-down connection of the filling member arrange | positioned in the up-down direction. The horizontal plate portions 1 and 1 of the filling member and the tips of the leg portions 2 and 2 can be connected vertically by simply fitting the recess 6b and the connecting recess (not shown) at the tip of the leg portion 2 respectively. It has become.

  Further, as shown in FIG. 5, the filling member is adjacent to the L-shaped connection convex portion 4 a for oblique connection formed on the side surface of each partition unit of the horizontal plate portion 1 of the filling member P 1 in the horizontal direction. Each section of the horizontal plate portion 1 of the filling member P3 accommodated in the concave portion 5 for avoiding interference formed on the side surface of each partition unit of the horizontal plate portion 1 of the filling member P2 and stacked upside down on the filling member P2. Bending of the L-shaped connecting convex part 4a for oblique connection formed on the side surface of each partition unit of the horizontal plate part 1 of the filling member P1 into the square hole-shaped connecting concave part 4b for oblique connection formed on the horizontal plane of the unit The portion 40a is fitted and engaged from below, and the L-shaped connecting convex portion 4a for oblique connection formed on the side surface of each partition unit of the horizontal plate portion 1 of the filling member P3 is connected to the horizontal plate of the filling member P1. On the side surface of each partition unit of the horizontal plate portion 1 of the filling member P4 which is turned upside down on the portion 1 A rectangular hole for oblique connection formed in the horizontal surface of each partition unit of the horizontal plate part 1 of the filling member P1 with the bent part 40a of the L-shaped connection convex part 4a housed in the formed concave part 5 for avoiding interference The horizontal plate portion 1 of the filling member P1 and the horizontal plate portion 1 of the filling member P3 that is adjacent to each other in the oblique direction can be reliably connected to each other simply by fitting and engaging with the cylindrical connecting recess 4b from above. Further, the filling member P2 and the filling member P4 can be connected in an oblique direction in the same manner as described above.

  As described above, this groundwater tank filling member can be arranged not only in the vertical and horizontal directions and in the vertical direction but also in the diagonal direction only by being arranged in the horizontal direction (vertical and horizontal direction) and vertical direction without using a separate connector. Since it is reliably connected, a strong void structure can be constructed inside the underground water tank with good workability. In addition, since the connecting member of the separate member is not required, the number of parts is reduced, and the workability of the connection is improved in combination with the lack of vertical and horizontal directions in the horizontal plate portion 1 of the filling member.

  FIG. 7 is a plan view showing one partition unit when a ground water tank filling member according to another embodiment of the present invention is partitioned into four parts by a vertical center line C1 and a horizontal center line C2, and FIG. It is a fragmentary perspective view of the filling member.

  This groundwater tank filling member is formed on the side surfaces on both sides of the corner of the square-shaped horizontal platen 1 in place of the connecting projections 4a for diagonal connection instead of the connecting projections 4a for diagonal connection. Instead of the recesses 5 for avoiding interference, a connection recess 7b for horizontal connection is formed one by one, and a total of four are formed on the entire four circumferential side surfaces of the horizontal platen 1, so as to avoid interference with the connection protrusions for horizontal connection. The recess of is omitted. And, on the upper surface of the horizontal platen part 1 (upper surface of the four-circumferential frame part 1a) located immediately before the connecting convex part 7a for oblique connection and also for horizontal connection, one connecting concave part 4b for oblique connection is formed as a whole. A total of four are formed, and on the upper surface of the closed portion 1c at the four corners of the horizontal board portion 1, there are a column-shaped connection convex portion 6a for vertical connection and a circular hole-shaped connection concave portion 6b corresponding thereto. A total of four are formed one by one.

  This filling member is also connected to the connecting projection 7a for horizontal connection and diagonal connection in each partition unit of the horizontal platen 1 divided into four by the vertical center line C1 and the horizontal center line C2. Connecting recesses 7b are formed one on each side on both sides of the corner of each partition unit, and connecting recesses 4b for oblique connection, and connecting projections 6a and connecting recesses for upper and lower connections. 6b is formed on the horizontal plane (upper surface) of each partition unit, and one leg 2 at the corner and 1/4 of the central leg are formed from the horizontal plane (lower surface) of each partition unit. It is formed downward. Thus, each partition unit of the horizontal board portion 1 has a shape that matches each time it is rotated by 90 ° about the intersection point O between the vertical center line C1 and the horizontal center line C2, When the members are reversed and the upper surface of the horizontal platen 1 is aligned, the connecting recess 6b of the other filling member is connected to each of the positions where the connecting projection 6a and the connecting recess 6b of one filling member are formed. The convex portions 6a are formed so as to correspond to each other and are fitted to each other. Therefore, this filling member also has no vertical and horizontal directions and can be easily arranged in the horizontal direction, so that the workability is good.

  As shown in FIG. 8, the connecting projection 7a for the horizontal connection and the diagonal connection is formed in the horizontal direction from the tip of the aforementioned L-shaped connection projection 4a for the oblique connection, that is, the side wall of each partition unit. The protruding tip portion is formed wider than the base end portion to have a dovetail shape, and the connecting recess 7b for the horizontal connection is used for the diagonal connection of the dovetail-shaped horizontal connection. Corresponding to the connecting convex portion 7a, the width of the back end portion is formed wider than the width of the opening end portion to form a dovetail shape.

  Since the other structure of this filling member is the same as that of the filling member shown in FIGS. 1 to 6 described above, the same members in FIG. 7 and FIG. To do.

  As shown in FIG. 3, the filling member having the above configuration is arranged in the horizontal direction (longitudinal and lateral directions) and the vertical direction, and the connecting convex portion 7 a for oblique connection also serving as horizontal connection is adjacent to the horizontal direction. Are fitted into the connecting recesses 7b for horizontal connection, and the bent portions 70a of the connecting projections 7a are fitted into and engaged with the connecting recesses 4b for oblique connection of the filling member stacked thereon. The filling members adjacent to each other in the direction and the oblique direction are connected to each other. And the connection convex part 6a for vertical connection and the connection convex part of the front-end | tip of the leg part 2 are overlapped by the up-down direction, the connection recessed part 6b for the vertical connection of the filling member arrange | positioned, and the connection concave part of the front-end | tip of the leg part 2 The upper and lower filling members are also connected to each other. Therefore, the filling member for the underground water tank is also strong only by being arranged in the horizontal direction (vertical and horizontal directions) and the vertical direction without considering the vertical and horizontal directions of the filling member without using a connecting member as a separate member. A simple void structure can be constructed with good workability inside the underground water tank. In addition, a connection projection dedicated to horizontal connection and a recess for avoiding interference with a connection projection for oblique connection are unnecessary, and the number of recesses formed on the side surface of each partition unit of the horizontal platen 1 can be reduced. The strength drop of the horizontal board portion 1 can be suppressed, and the workability is further improved by the amount that the number of connecting convex portions and concave portions to be fitted is reduced.

  FIG. 9 is a side view of a ground water tank filling member according to still another embodiment of the present invention, and FIG. 10 is a plan view of the filling member.

  This filling member for underground water tanks is formed by forming the horizontal plate portion 1 in a square quadrilateral frame shape and integrally forming the square trapezoidal bowl-shaped leg portion 20 that is inverted on the horizontal plate portion 1. On the side surface of the four-frame frame-shaped horizontal board portion 1, as in the ground water tank filling member shown in FIGS. 1 to 6, the ant tenon-like connection convex portion 3 a for horizontal connection and the ant groove-like connection concave portion are provided. 3b is formed in total, L-shaped connecting convex portions 4a for oblique connection and four concave portions 5 for avoiding interference are formed in total, and on the upper surface of the four corners of the four-frame frame-shaped horizontal plate portion 1, There are four connecting recesses 4b for oblique connection, a total of four, and four columnar connecting protrusions 6a and one circular hole-shaped connecting recess 6b for upper and lower connections. Yes. And the connection convex part and connection recessed part for an up-down connection are formed also in the front end surface of the bowl-shaped leg part 20. As shown in FIG.

This groundwater tank filling member is also rotated every 90 ° around the intersection of the vertical center line and the horizontal center line, with the partition unit divided into four parts by the vertical center line and the horizontal center line. When the upper surface of the horizontal platen 1 is aligned by reversing the filling member, each of the filling members 6a and 6b is formed at the respective positions where the connection protrusions 6a and the connection depressions 6b of the one filling member are formed. Since the connecting concave portion 6b and the connecting convex portion 6a are formed so as to correspond to each other and are fitted to each other, the filling member has no vertical and horizontal directions.
In addition, although not shown in figure, many water flow holes are formed in the side surface and the front end surface of the bowl-shaped leg portion 20 so that water can freely enter and exit inside and outside the bowl-shaped leg portion 20. Yes.

  In the same manner as the above-described underground water tank filling member, such a filling member for the underground water tank is also provided in the horizontal direction (vertical and horizontal directions) and the vertical direction, and the horizontal adjacent filling members are used for horizontal connection. The connecting convex portions 3a and the connecting concave portions 3b are connected by fitting, and the upper and lower filling members are connected to the upper and lower connecting connecting convex portions 6a and the connecting concave portions 6b. Since the connecting protrusions for connecting the upper and lower parts and the connecting recesses are connected to each other, and the filling members adjacent in the oblique direction are connected by the engagement of the connecting protrusions 4a and the connecting recesses 4b for the oblique connection. A solid void structure can be constructed in the groundwater tank with good workability without using a connecting tool for members, and the filling member does not have vertical and horizontal directions, and is easy to install.

  Although the filling member for groundwater tanks concerning the above embodiment is equipped with the leg parts 2 and 20 which all protrude from the lower surface (one horizontal surface) of the horizontal board part 1, only the horizontal board part 1 without a leg part is provided. For example, a filling member consisting only of a square frame type horizontal plate part 1 having a certain height, and this square frame type horizontal plate part 1 includes four vertical center lines and four horizontal center lines. On the side face of each partition unit divided into two, avoid the interference with the above-mentioned ant tenon-like connecting convex part 3a and dovetail-like connecting convex part 3b for oblique connection and the L-shaped connecting convex part 4a for oblique connection. Are formed on the upper and lower surfaces of each partition unit of the horizontal platen 1 and are connected to square connecting concave portions 4b for oblique connection and cylindrical connecting convex portions 6a for vertical connection and circular hole shapes. The connecting recess 6b may be formed.

Since the filling member composed only of the horizontal plate portion 1 without the leg portion has no vertical direction, the bent portion 40a is formed by bending the L-shaped connection convex portion 4a for oblique connection upward or downward. It is sufficient that the top end of the horizontal plate portion 1 protrudes above or below the respective partition units of the horizontal plate portion 1. It is good to form on both lower surfaces.
In addition, it is necessary to form many water flow holes in the square frame type horizontal board portion 1 of the filling member so that water can freely enter and exit. In addition, it is desirable that such a square frame type horizontal platen 1 is divided and formed as appropriate in consideration of formability.

  Since such a filling member is also connected in the vertical, horizontal, vertical, and diagonal directions simply by being arranged in the horizontal direction (vertical and horizontal directions) and the vertical direction, a strong void structure is built in the groundwater tank with good workability. be able to.

DESCRIPTION OF SYMBOLS 1 Horizontal board part 2 Leg part 20 Vertical leg part 3a Connection convex part for horizontal connection 3b Connection concave part for horizontal connection 4a Connection convex part for diagonal connection 4b Connection concave part for diagonal connection 5 Concave part for avoiding interference 6a Vertical connection Connection convex part 6b Connection concave part for vertical connection 7a Connection convex part 7b for horizontal connection and diagonal connection 7b Connection concave part for horizontal connection C1 Vertical center line C2 Horizontal center line O Vertical center line and horizontal center Intersection with line

Claims (5)

A filling member that is arranged in a horizontal direction and a vertical direction to form a void structure inside the underground water tank,
The filling member includes at least a horizontal plate portion, and the horizontal plate portions are arranged side by side and arranged in the horizontal direction, and the horizontal surfaces of the horizontal plate portions are combined, or one horizontal plane of the horizontal plate portion is And the tips of the leg portions protruding from the other horizontal surface of the horizontal plate portion are combined and arranged in the vertical direction,
Each of the partition units divided into four by the vertical center line and the horizontal center line of the horizontal plate part is a connecting projection for horizontal connection for connecting to the horizontal plate part of the filling member adjacent in the horizontal direction. And a connecting concave portion for connecting horizontally and a connecting convex portion for connecting obliquely for connecting with a horizontal plate portion of a filling member stacked on or below a horizontal plate portion of a filling member adjacent in the horizontal direction. The connecting concave portions are integrally formed, and each partition unit has a shape that matches each time it is rotated by 90 ° about the intersection of the vertical center line and the horizontal center line. Filling member for underground water tank.   The connecting projection for horizontal connection, the connecting recess for horizontal connection, and the connecting projection for oblique connection are formed on the side surface of each partition unit of the horizontal plate portion, and the connecting recess for oblique connection is It is formed in the horizontal surface of each division unit of the said horizontal board part, The filling member for underground water tanks of Claim 1 characterized by the above-mentioned.   The connecting projection for oblique connection is an L-shaped connecting projection that protrudes in the horizontal direction from the side surface of each partition unit of the horizontal plate portion and bends upward or downward. The ground water tank filling member according to claim 1 or 2, wherein a tip of a bent portion bent downward protrudes upward or downward from each partition unit of the horizontal plate portion.   The L-shaped connecting convex part for oblique connection forms a horizontal connection by forming the width of the leading end protruding in the horizontal direction from the side surface of each partition unit of the horizontal plate part wider than the width of the base end part. Each of the sections of the horizontal plate portion is a connecting recess for horizontal connection, which is a connecting convex portion for diagonal connection, and the width of the back end portion is wider than the width of the opening end portion corresponding to the connecting convex portion. The filling member for a groundwater tank according to claim 3, wherein the filling member is formed on a side surface of the unit.   The horizontal plate portion does not have a leg portion, and the tip of the bent portion of the L-shaped connecting convex portion for oblique connection is above or from each partition unit of the horizontal plate portion not having the leg portion. The filling member for underground water tank according to claim 3, wherein the filling member protrudes downward.

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