JP2014009457A - Filling member for underground water tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filling member for an underground water tank, by which a void structure can be easily formed in the underground water tank and which has excellent workability, because connection of connection parts is started with shifted timing between the connection parts.SOLUTION: Filling members 10 are arranged in a horizontal direction and a vertical direction to form a void structure inside an underground water tank. Two or more connection parts comprising connection projections or/and connection recesses for being connected with an adjacent filling member 10 are integrally provided in each of the filling members 10. When connecting one filling member 10 to the other filling member 10, connection of connection parts is started with shifted timing between the connection parts by making the distance between two or more connection parts provided in each of the two filling members 10 different from each other. The void structure inside the underground water tank can be easily formed by making it possible to start connection of the connection parts with shifted timing therebetween.

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 filler constituting the void structure inside the underground water tank, for example, a filler having a square frame and a hollow column and having a T-shaped groove formed on the side surface of the frame is known ( Patent Document 1). The filling body of this Patent Document 1 is configured to be connected to an adjacent filling body in the horizontal direction by inserting H pieces into a T-shaped groove on the side surface of the frame.

  However, as in the above-mentioned Patent Document 1, the type of filler using the H piece when connecting in the horizontal direction requires a large amount of H pieces to form a void structure inside the underground water tank, and costs are increased. At the same time, the implementation was troublesome, and there was also a concern about forgetting to insert the H piece.

  In view of such circumstances, a rectangular frame body and a hollow column portion are provided, and a T-shaped projection and a T-shaped groove for connecting the filling members in the horizontal direction are formed integrally on the side surface of the frame body. A filling body was proposed in which a convex portion for connecting the filling members in the vertical direction was formed at the lower end of the columnar column portion, and a concave portion for inserting the convex portion was formed at the upper end of the hollow column portion ( Patent Document 2).

  The filler is arranged in the horizontal direction by fitting the T-shaped protrusion of one filler and the T-shaped groove of the other filler, and the hollow column portion of the filler By inserting the convex portion into the concave portion of the filling body located below, the filling body is arranged in the vertical direction, and by repeating this, a void structure inside the underground water tank is constructed, and Patent Document 1 Since the fillers can be connected to the left and right without using the H piece as described above, the above problem can be solved temporarily.

Japanese Patent Application No. 10-266313 JP 2002-097707 A

However, the filling body of Patent Document 2 has the following problems.
That is, the packing body (referred to here as packing body A ′) of Patent Document 1, the packing body B ′ adjacent in the horizontal direction, and the packing body C ′ positioned above the packing body B ′ are already connected. In this state, if the filler D ′ is newly connected to the upper side of the filler A ′ and next to the filler C ′, the filler D ′ needs to be connected to the filler A ′ and the filler C ′. There is. At this time, a T-shaped protrusion formed on the side surface of the frame body of the filling body D ′, a T-shaped groove formed on the side surface of the body body of the filling body C ′, and a lower end of the hollow column portion of the filling body D ′ are formed. Since the convex portion thus formed and the concave portion formed at the upper end of the hollow column portion of the filler A ′ start to be connected at the same time, the connected state (the filler D ′ and the filler C ′) in the horizontal direction (the vertical and horizontal directions) and the vertical It was necessary to connect the fillers while confirming the connected state (filler D ′ and filler A ′) in the direction (vertical direction), and it was not possible to say that the workability was good.

  The present invention has been made in view of the above problems, and the problem to be solved is that the connection of each connection portion starts out of alignment, so that a void structure inside the underground water tank can be easily formed. An object of the present invention is to provide a filling member for a groundwater tank having good workability.

In order to achieve the above object, 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 a groundwater tank. When two or more connecting portions including connecting convex portions and / or connecting concave portions for connecting to an adjacent filling member are integrally provided, and one filling member is connected to another adjacent filling member The connection start time of each connection part is shifted and started by making the distance between each connection part of two or more connection parts provided in one filling member and another filling member different. It is characterized by this.
Here, “adjacent” is a concept including an obliquely upward and obliquely downward direction.

  In the filling member for a groundwater tank of the present invention, the filling members are arranged in the horizontal direction with the side surfaces aligned, or the horizontal surfaces are combined, or one of the horizontal surfaces of the filling member and the filling member The front ends of the legs protruding from the other horizontal plane are combined and arranged in the vertical direction, and the filling member includes a connecting portion for connecting in the horizontal direction for connecting to the horizontally adjacent filling member. , At least two or more connecting portions for connecting in the vertical direction for connecting with the filling member superimposed in the vertical direction are integrally provided, and the filling member is connected to the horizontal filling member in the vertical direction. When connecting to the filling member at the same time, the distance between the connecting portions for connecting in the horizontal direction and the distance between connecting portions for connecting in the vertical direction are made different so that the connection start timing of the connecting portions in the horizontal direction and the vertical direction can be reduced. Z It is preferable that the filling member has a leg portion protruding from one horizontal surface of the horizontal plate portion and the horizontal plate portion, and a connecting portion for connecting in the horizontal direction is provided on a side surface of the horizontal plate portion. Are formed on the horizontal surface of the horizontal plate portion and the front end surface of the leg portion, respectively, and when connecting the horizontal surfaces of the filling members together, When the connection is started before the connection in the vertical direction and the tips of the legs of the filling members are connected together, the connection in the horizontal direction is started so that the connection in the horizontal direction starts later than the connection in the vertical direction. It is more preferable to form a connection part and a connection part for vertical connection. In addition, a connecting portion for oblique connection for connecting with the horizontal plate portion of the filling member that is stacked on or under the horizontal plate portion of the filling member adjacent in the horizontal direction is integrated with the side surface of the horizontal plate portion of the filling member. Provided so that the connection start time of the connection part for the diagonal connection is shifted from the connection start time of the connection part for the horizontal connection and the connection start time of the connection part for the vertical connection. It is also preferable to form a connection part for connection.

The ground water tank filling member of the present invention is provided with a connecting portion for connecting in the horizontal direction and a connecting portion for connecting in the vertical direction for connecting the filling members, so when connecting the filling members to each other. A separate member is not required, the workability is improved, and the cost can be reduced.
Also, by making the distance between the connecting parts that connect the adjacent filling members different, the connection start time of each connecting part starts to deviate, and only the connection of the connecting part that has been connected first is started. It is possible to connect the filling members with care. And since the connection part which started this connection first plays the role of a guide and the connection of the following connection parts can also be performed smoothly, the space | gap structure inside a groundwater tank can be formed easily.
Thus, the filling member for underground water tanks of the present invention can achieve the above-described effects by making the distance between at least two of the two or more connecting portions provided in the filling member different. Good filling member.

  In addition, the filling member is disposed in the horizontal direction with the side surfaces aligned, and the horizontal surfaces are aligned with each other, or the ends of the legs protruding from one horizontal surface of the filling member and the other horizontal surface of the filling member The filling members are arranged in the vertical direction. The filling member includes a connecting portion for connecting in the horizontal direction to the horizontal filling member and a filling member superimposed in the vertical direction. When connecting the filling member to the horizontal filling member and the vertical filling member at the same time, at least two or more of the connecting portions for vertical connection for connecting to the horizontal direction are provided integrally. For groundwater tanks in which the connection start time of the horizontal and vertical connection parts is shifted by making the distance between the connection parts for direction connection different from the distance between the connection parts for vertical connection Charge The members are disposed in the horizontal direction with the side surfaces of the filling member aligned, and the horizontal surfaces of the filling member are aligned with each other, or the ends of the legs protruding from one horizontal surface of the filling member and the other horizontal surface of the filling member By arranging them in the vertical direction, the filling members are reliably connected to each other, and a strong void structure can be formed inside the underground water tank. At that time, since the connection start timings of the connection portions in the horizontal direction and the vertical direction are shifted from each other, the connection workability is very good.

  Furthermore, the filling member is provided with a leg portion protruding from one horizontal surface of the horizontal plate portion and the horizontal plate portion, and a connecting portion for horizontal connection is formed on the side surface of the horizontal plate portion, When the horizontal plane of the horizontal plate part and the front end surface of the leg part are formed with connecting parts for vertical connection, respectively, when connecting the horizontal surfaces of the filling members together, the horizontal connection is more than the vertical connection. First, when connecting the tips of the legs of the filling member together, the horizontal connection and the vertical connection are made so that the horizontal connection starts later than the vertical connection. As for the filling member for underground water tanks in which the connecting portions are formed, the connection workability is further improved by starting the connection of the connecting portions in this order.

  In addition, a connecting portion for oblique connection for connecting with the horizontal plate portion of the filling member that is stacked on or under the horizontal plate portion of the filling member adjacent in the horizontal direction is integrated with the side surface of the horizontal plate portion of the filling member. Provided so that the connection start time of the connection part for the diagonal connection is shifted from the connection start time of the connection part for the horizontal connection and the connection start time of the connection part for the vertical connection. The filling member for the underground water tank in which the connecting portion for connection is formed is a connecting portion for oblique connection for connecting with the horizontal plate portion of the filling member stacked on or under the horizontal plate portion of the adjacent filling member in the horizontal direction. By providing, it becomes possible to connect to the filling member in the oblique direction, so that a stronger void structure can be formed.

BRIEF DESCRIPTION OF THE DRAWINGS The filling member for underground water tanks which concerns on one Embodiment of this invention is shown, Comprising: (a) is a perspective view from a plane, (b) is a perspective view of the state which turned (a) upside down. It is explanatory drawing which shows the aspect which match | combines and connects the front-end | tips of the leg part of the filling member. It is explanatory drawing which shows the aspect which match | combined the front-end | tips of the leg part of the filling member, and the connection of the connection part started. It is explanatory drawing which shows the aspect which match | combines and connects the horizontal surfaces of the said filling member. It is explanatory drawing which shows the aspect which the connection of the connection part started by aligning the horizontal surfaces of the filling member. It is a perspective view which shows the filling member for underground water tanks which concerns on other embodiment of this invention. It is a fragmentary perspective view of the filling member. It is explanatory drawing which shows the aspect which match | combines and connects the horizontal surfaces of the said filling member. 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 perspective view which shows the filling member for underground water tanks which concerns on other embodiment of this invention. It is a fragmentary perspective view of the filling member. It is explanatory drawing which shows the aspect which match | combines and connects the horizontal surfaces of the said filling member.

  Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

  A filling member 10 for a groundwater tank according to the present invention shown in FIG. 1 is injection-molded with a thermoplastic resin such as polypropylene, and includes a square horizontal plate portion 1 and a plurality of leg portions 2. . 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.

  As shown in FIGS. 1A and 1B, the horizontal plate portion 1 is formed by forming a lattice portion 1b that intersects vertically and horizontally inside a square quadrilateral frame portion 1a, and an opening of the lattice portion 1b. The water can move up and down through. The four corners and the central opening of the lattice portion 1b are closed, and a leg portion 2 protruding downward is integrally formed in each closed portion 1c.

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

  As shown in FIGS. 2 to 5, the filling member 10 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 1 and is filled upside down. Legs 2 protruding from one horizontal surface (upper surface) of each horizontal plate portion 1 and the other horizontal surface (lower surface) of each horizontal plate portion 1 by alternately stacking members 10 and filling members 10 that are not inverted upside down. By arranging them in the vertical direction (vertical direction) while aligning the front end surfaces, a void structure is formed inside a groundwater tank such as a rainwater storage tank or rainwater infiltration tank. Is connected in the horizontal direction and the vertical direction by the connecting portion 3 for horizontal connection (for vertical and horizontal connection) and the connecting portions 4 and 5 for vertical connection (for vertical connection), which are described later. Can build Than is.

  That is, as shown in FIG. 1, the connecting portion 3 for horizontal connection includes a dovetail-like connecting convex portion 3a and a corresponding dovetail-like connecting concave portion 3b. One connecting recess 3b is formed on each side surface across the corner of the horizontal plate portion 1, and a total of four connecting concave portions 3b are formed on the entire four circumferential side surfaces of the horizontal plate portion 1. As will be described in detail later, as shown in FIG. 2, the connecting projection 3a includes a filling member 10 (herein referred to as a filling member A) disposed upside down, and the filling member A and the horizontal direction. In a state where the vertically inverted filling member 10 (herein referred to as filling member B) and the filling member 10 (herein referred to as filling member C) located above the filling member B are already connected to each other, When the filling member 10 (herein referred to as the filling member D) is newly connected to the upper side of the filling member A and next to the filling member C, the connecting portions 3 and 3 for horizontal connection and the connection for vertical connection are provided. The portions 5 and 5 are formed to have a thickness of about half of the thickness of the horizontal plate portion 1 so as not to start connection at the same time.

  Moreover, the connection part 4 for vertical connection formed in the surface (upper surface) of the horizontal board part 1 consists of the column-shaped connection convex part 4a and the connection recessed part 4b corresponding to this, One in each of the closed portions 1c at the four corners, a total of four.

  Further, the connecting portion 5 for vertical connection formed on the distal end surface of the leg portion 2 is composed of a cylindrical connecting convex portion 5a having a diameter smaller than that of the connecting convex portion 4a and a corresponding connecting concave portion 5b. Each of the leg portions 2 protruding from the four corners of the horizontal plate portion 1 is formed one by one, and each of the central leg portions 2 is formed by two, for a total of six.

  The groundwater tank filling member 10 having the above-described configuration is disposed in the horizontal direction (vertical and horizontal directions) and the vertical direction (vertical direction) to construct a void structure inside the groundwater tank. In doing so, the horizontal dovetail-shaped connecting projection 3a for horizontal connection is simply fitted into the dovetail-shaped connecting recess 3b of the filling member 10 adjacent in the vertical and horizontal directions (horizontal direction). The board parts 1 and 1 can be connected vertically and horizontally. Then, a cylindrical connection convex portion 4a for vertical connection and a columnar connection convex portion 5a at the tip of the leg 2 are connected in a circular hole shape for vertical connection of the filling member 10 arranged in the vertical direction. The horizontal plate portions 1 and 1 of the filling members 10 and 10 and the tips of the leg portions 2 and 2 are connected vertically by simply fitting the recess 4b and the circular hole-shaped connecting recess 5b at the tip of the leg 2 respectively. It can be done.

  And the biggest feature of the filling member 10 for underground water tanks of the present invention is that, as described above, when the filling member 10 is arranged in the horizontal direction and the vertical direction, the horizontal connection and the vertical connection start simultaneously. There are things that I tried not to do.

  As shown in FIG. 2, the filling member A disposed upside down, the filling member B disposed upside down adjacent to the filling member A in the horizontal direction, and the filling member B above. When the filling member C is already connected, the filling member D is newly connected above the filling member A and next to the filling member C (tips of the legs 2 and 2 of the filling members 10 and 10). When connecting them together), the vertical connection (the connection between the filling member A and the filling member D) starts earlier than the horizontal connection (the connection between the filling member C and the filling member D). is there. This is because the distance D1 between the connecting portions 5 (5a) and 5 (5b) for vertical connection of the filling members 10 and 10 and the connecting portions 3 (3a) and 3 (3b for horizontal connection of the filling members 10 and 10). ) By forming the distance D2 to be different, the connection start times of the connecting portions 3 and 3 for horizontal connection and the connecting portions 5 and 5 for vertical connection are shifted. The distance D1 between the connecting parts 5 and 5 for vertical connection is shorter than the distance D2 between the connecting parts 3 and 3 for use (D1 <D2). Therefore, as described above, the distance D2 between the connecting projection 3a for horizontal connection and the connecting recess 3b is obtained by reducing the thickness of the connecting projection 3a for horizontal connection to about half the thickness of the horizontal platen 1. .

Thus, by making the distance D1 between the connecting portions 5 and 5 for vertical connection shorter than the distance D2 between the connecting portions 3 and 3 for horizontal connection, as described above, the filling members A, B, C When the new filling member D is connected to the upper side of the filling member A and next to the filling member C in the state where the two are connected, as shown in FIG. The connection between the concave portion 5b (or the connecting convex portion 5a) and the connecting convex portion 5a (or the connecting concave portion 5b) of the filling member A starts. When the connection of the connecting projection 5a and the connecting recess 5b for vertical connection between the filling member D and the filling member A is started, the connection projection 3a for horizontal connection of the filling member D and the horizontal connection of the filling member C are then performed. The connection recess 3b starts to be connected. Thus, since the connection parts 3 and 3 for horizontal connection and the connection parts 5 and 5 for vertical connection do not start connection simultaneously, after confirming the connection state of the connection parts 5 and 5 for vertical connection first. Then, since the connecting operation of the connecting portions 3 and 3 for horizontal connection can be started, the workability is good, and the connecting convex portion 5a and the connecting concave portion 5b which have started the connection first serve as a guide, and the next connecting convex portion The connection between the portion 3a and the connection recess 3b is performed smoothly.
In addition, it becomes possible to connect more smoothly by making the front-end | tip of the connection convex part 5a for perpendicular | vertical connection into the taper shape and the round shape of a taper.

  Further, as shown in FIG. 4, in the state where the filling member A, the filling member B adjacent to the filling member A in the horizontal direction, and the filling member C located above the filling member B are already connected, When the filling member D is connected to the upper side of the filling member A and next to the filling member C (when the horizontal surfaces of the horizontal plate portions 1 and 1 of the filling members 10 and 10 are connected together), The connection (connection of the filling member A and the filling member D) is started later than the connection in the horizontal direction (connection of the filling member C and the filling member D). Similarly to the above, the distance D3 between the connecting portions 3 (3a), 3 (3b) for the horizontal connection of the filling members 10, 10 and the connecting portion 4 (4a) for the vertical connection of the filling members 10, 10 are also used. , 4 (4b) are formed to have different distances D4, and the connection start times of the connecting portions 3 and 3 for horizontal connection and the connecting portions 4 and 4 for vertical connection are shifted. The distance D3 between the connecting portions 3 and 3 is shorter than the distance D4 between the connecting portions 4 and 4 for vertical connection (D3 <D4).

Thus, by making the distance D3 between the connecting portions 3 and 3 for horizontal connection shorter than the distance D4 between the connecting portions 4 and 4 for vertical connection, as described above, the filling members A, B, C When the new filling member D is connected to the upper side of the filling member A and next to the filling member C in the state where the two are connected, as shown in FIG. The connection recess 3b for horizontal connection between the protrusion 3a and the filling member C starts connection. When the connection between the connecting convex portion 3a for horizontal connection of the filling member D and the connecting concave portion 3b for horizontal connection of the filling member C is started, the connection between the connecting convex portion 4a for vertical connection and the connecting concave portion 4b is then started. To do. Thus, since the connection parts 3 and 3 for horizontal connection and the connection parts 4 and 4 for vertical connection do not start connection simultaneously, after confirming the connection state of the connection parts 3 and 3 for horizontal connection first. Then, since the connecting work of the connecting parts 4 and 4 for vertical connection can be started, the workability is good, and the connecting convex part 3a and the connecting concave part 3b which have started the connection first serve as a guide, and the next connecting convex part The connection between the portion 4a and the connection recess 4b is smoothly performed.
In addition, the tip shape of the connecting convex portion 4a for vertical connection can be connected more smoothly if it has a tapered shape or a rounded shape like the above-described connecting convex portion 5a for vertical connection. Therefore, it is preferable.

  As described above, the filling member 10 for groundwater tank according to the present invention can be arranged in the horizontal direction (vertical and horizontal direction) and the vertical direction (vertical direction) without using a separate connecting tool. To be securely connected. And since the connection of the connection parts 3 and 3 for horizontal connection and the connection parts 4 and 5 for vertical connection starts by shifting | deviating, a strong space | gap structure can be constructed | assembled inside a groundwater tank with sufficient workability.

  FIG. 6 is a perspective view showing a filling member for a groundwater tank according to another embodiment of the present invention, FIG. 7 is a partial perspective view of the filling member, and FIG. 8 shows a mode in which the horizontal surfaces of the filling member are connected together. FIG. 9 is a partial side view showing a connected state of the filling member and the filling member adjacent in the oblique direction.

  Although the filling member 10 for groundwater tanks of embodiment mentioned above connects a vertical-horizontal direction and an up-down direction, a void structure is built in a groundwater tank, The filling member 11 for groundwater tanks of this embodiment is used. Is capable of being connected not only to the vertical and horizontal directions and the vertical direction but also to the adjacent oblique filling members 11 so that a stronger void structure can be built inside the underground water tank.

  That is, as shown in FIG. 6, the ground water tank filling member 11 is connected to the horizontal plate portion 1 of the filling member 11 that is obliquely adjacent to the side surfaces on both sides of each corner of the horizontal plate portion 1. The L-shaped connecting convex portions 6a and the concave portions 7 for avoiding interference with the L-shape when adjacent to each other in the oblique direction are formed one by one, and a total of four are formed on the entire four circumferential side surfaces of the horizontal plate portion 1. The connecting recess 6b for connecting to the horizontal plate portion 1 of the filling member 11 adjacent in the oblique direction is an upper surface (one horizontal plane) of the horizontal plate portion 1, specifically, a four-round frame of the horizontal plate portion 1. A total of four are formed, one on the top surface of the portion 1a immediately before each connecting projection 6a.

  As shown in FIGS. 6 and 7, the connecting projection 6a for oblique connection is formed in an L-shape that protrudes in the horizontal direction from the side surface of the horizontal board portion 1 and bends upward. The tip protrudes above the horizontal plate part 1. And the connection recessed part 6b for diagonal connection is formed in the square hole shape provided with the rectangular opening in which the said bending part 60a fits.

  As shown in FIG. 9, the filling member 11 has an L-shaped connection convex portion 6 a for oblique connection formed on the side surface of the horizontal plate portion 1 of the lower left filling member 11. Formed in the horizontal plate portion 1 of the upper right filling member 11 which is accommodated in the concave portion 7 for avoiding interference formed in the horizontal plate portion 1 of the filling member 11 and turned upside down on the lower right filling member 11. The bent portion 60a of the L-shaped connecting convex portion 6a of the lower left filling member 11 is fitted and engaged with the connecting concave portion 6b for oblique connection from the lower side, and on the side surface of the horizontal plate portion 1 of the upper right filling member 11. The formed L-shaped connecting convex portion 6a for oblique connection is vertically inverted and overlapped on the lower left horizontal plate portion 1 and formed in the horizontal plate portion 1 of the upper left filling member 11 to avoid interference 7. The bent portion 60a of the L-shaped connecting convex portion 6a is connected to the horizontal plate portion of the lower left filling member 11. Just engaged is fitted from above to the connecting recess 6b for formed obliquely connected to the, so that the upper right of the filling member 11 adjacent the bottom left of the filler member 11 and the oblique direction can be reliably connected. Also, the lower right filling member 11 and the upper left filling member 11 can be connected in an oblique direction in the same manner as described above.

The filling member 11 is also configured such that the connection start timings of the horizontal connection, the vertical connection, and the oblique connection start with a shift, similarly to the filling member 10 of the above-described embodiment.
That is, as shown in FIG. 8, in the state where the filling member A, the filling member B and the filling member E adjacent to the left and right of the filling member A, and the filling member C located above the filling member B are already connected. When newly connecting the filling member D to the filling member C and the filling member E above the filling member A (when connecting the horizontal surfaces of the horizontal plate portions 1 and 1 of the filling members 11 and 11 together) The distance D4 between the connecting protrusion 4a for vertical connection and the connecting recess 4b is made longer than the distance D3 between the connecting protrusion 3a for horizontal connection and the connecting recess 3b, and the connecting protrusion 4a for vertical connection is further increased. The distance D5 between the connecting convex part 6a for oblique connection and the connecting concave part 6b is made longer than the distance D4 between the connecting concave part 4b (D3 <D4 <D5).

As described above, by making the distances D3, D4, and D5 between the connecting portions different from each other, first, the connecting projection 3a for horizontally connecting the filling member D and the connecting recess 3b for horizontally connecting the filling member C are used. Concatenation starts. When the connection of the connecting projection 3a for horizontal connection of the filling member D and the connection recess 3b for horizontal connection of the filling member C is started, then the connection projection 4a for vertical connection of the filling member D and the filling member A The connection of the connecting recess 4b for vertical connection is started, and finally, the connection of the bent portion 60a of the connecting protrusion 6a for oblique connection of the filling member D and the connection recess 6b for oblique connection of the filling member E is started.
Since the other structure of this filling member 11 is the same as that of the filling member 10 shown in FIGS. 1-5 mentioned above, the same code | symbol is attached | subjected to the same member and description is abbreviate | omitted.

  The filling member 11 of this embodiment is also configured so that the connection start timings of the respective connecting portions (3, 4, 6) are shifted from each other, so that a strong void structure can be obtained simply by disposing them in the horizontal direction and the vertical direction. The body can be constructed in the groundwater tank with good workability, and the filling members 11 and 11 in the oblique direction are also connected to each other, so that a stronger void structure can be constructed.

  FIG. 10 is a perspective view showing a filling member for a groundwater tank according to still another embodiment of the present invention, FIG. 11 is a partial perspective view of the filling member, and FIG. 12 is a view in which the horizontal surfaces of the filling member are connected together. It is explanatory drawing shown.

  As shown in FIG. 10, the ground water tank filling member 12 is used for horizontal connection instead of the above-described connecting projections 3 a for horizontal connection of the filling member 10 on both side surfaces sandwiching the corner of the horizontal board portion 1. The connecting convex portion 8a for oblique connection is formed. Further, a connecting concave portion 8b for oblique connection is formed on the upper surface of the horizontal platen portion 1 positioned immediately before the connecting convex portion 8a for oblique connection that also serves as horizontal connection.

  As shown in FIG. 11, the connecting projection 8 a for the diagonal connection also serves as the width of the base end portion of the front end portion of the L-shaped connection projection 6 a for the oblique connection of the filling member 11. The connecting recess 8b for oblique connection is formed in a square hole shape having a rectangular opening into which the bent portion 80a is fitted.

  The above-mentioned filling member 12 is also arranged in the horizontal direction (vertical and horizontal directions) and the vertical direction (vertical direction), so that the connecting projections 8a for diagonal connection also serve as horizontal connections of the filling members 12 adjacent in the horizontal direction. The bent portion 80a of the connecting convex portion 8a is fitted into and engaged with the connecting concave portion 8b for oblique connection of the filling member 12 located obliquely below, while fitting into the connecting concave portion 3b for connection, and the horizontal direction. The filling members 12 adjacent in the oblique direction are connected to each other.

Similarly to the filling member 11 of the above-described embodiment, the filling member 12 is also configured such that the connection start timings of the horizontal connection, the vertical connection, and the diagonal connection are shifted.
As shown in FIG. 12, in the state where the filling member A, the filling member B and the filling member E adjacent to the left and right of the filling member A, and the filling member C located above the filling member B are already connected, When the filling member D is connected to the filling member C and the filling member E above the filling member A (when the horizontal surfaces of the horizontal plate portions 1 and 1 of the filling members 12 and 12 are connected together), The distance D4 between the connecting convex part 4a for vertical connection and the connecting concave part 4b is made longer than the distance D6 between the connecting convex part 8a for connecting diagonally and the connecting concave part 3b for horizontal connection, and the vertical connection thereof. The distance D7 between the connecting convex portion 8a for diagonal connection and the opening 8b for diagonal connection is longer than the distance D4 between the connecting convex portion 4a and the connecting concave portion 4b (D6 <D4). <D7).

As described above, by making the distances D6, D4, and D7 between the connecting portions different from each other, first, the connecting projection 8a for the diagonal connection and the horizontal connection of the filling member D and the connection recess 3b of the filling member C are used. Concatenation starts. When the connection between the connecting convex portion 8a of the filling member D and the connecting concave portion 3b of the filling member C is started, the connecting convex portion 4a for the vertical connection of the filling member D and the connecting concave portion 4b for the vertical connection of the filling member A are then performed. Finally, the connection between the bent portion 80a of the connecting projection 8a for the diagonal connection and the connecting recess 8b for the oblique connection of the filling member E is started.
Since the other structure of this filling member 11 is the same as that of the filling member 10 shown in FIGS. 1-5 mentioned above, the same code | symbol is attached | subjected to the same member and description is abbreviate | omitted.

  The filling member 12 of this embodiment can also construct a strong void structure in the groundwater tank with good workability simply by disposing it in the horizontal direction and the vertical direction without using a separate connector. Moreover, since the connection convex part and connection recessed part for diagonal connection become unnecessary, and the number of connection recessed parts formed in the side surface of the horizontal board part 1 can be reduced, the strength reduction of the horizontal board part 1 can be suppressed. As a result, the workability is further improved by the reduction in the number of connecting convex portions and connecting concave portions to be fitted.

  As for the filling member 10,11,12 for groundwater tanks concerning the above embodiment, all are the connection part (for example, connection part 3 and 3 for horizontal connection) and the connection part (for example, connection for vertical connection) of a different direction. Although the connection start time of the parts 4 and 4 or the connection parts 5 and 5) is shifted, the connection start time of the connection part in the same direction may be shifted.

  That is, in the filling member 10 of the above-described embodiment, a total of four connecting projections 3 a for horizontal connection are formed on the side surface of the horizontal plate portion 1, and the thickness thereof is about half of the thickness of the horizontal plate portion 1. However, it is also possible to shift the connection start time in the horizontal direction by further reducing the thickness, or by making it the same as the thickness of the horizontal board portion 1.

  Similarly, the protrusion lengths of the four connection protrusions 4a for vertical connection provided on the horizontal platen 1 are set to different lengths, or four connection protrusions for vertical connection provided on the front end surface of the leg part 2 are used. By making the length of the part 5a different, the connection start time in the vertical direction can be shifted.

  The filling member in which the connection start timing of the connecting portions in the same direction as described above is shifted, for example, in a state where the filling members are arranged in the horizontal direction and the filling members are already connected in a substantially U shape in plan view. When installing a new filling member in the U-shaped gap and constructing a gap structure with a rectangular plan view, the horizontal connection start time is shifted to improve horizontal connection workability. To do.

DESCRIPTION OF SYMBOLS 10, 11, 12 Filling member for groundwater tank 1 Horizontal board part 1a Four-frame part 1b Lattice part 1c Closure part 2 Leg part 3 Connection part (for horizontal connection)
3a connection convex part 3b connection concave part 4 connection part (for vertical connection)
4a Connection convex part 4b Connection concave part 5 Connection part (for vertical connection)
5a Connection convex part 5b Connection concave part 6a Connection convex part (for diagonal connection)
60a Bent part 6b Connection concave part 7 Concave part 8a Connection convex part (for diagonal connection and horizontal connection)
8b Connection concave part D1 Distance between the connection convex part for vertical connection provided at the tip of the leg part and the connection concave part D2 Distance between the connection convex part for horizontal connection provided on the side surface of the horizontal board part and the connection concave part D3 Horizontal The distance between the connecting convex part for horizontal connection provided on the side surface of the board part and the connecting concave part D4 The distance between the connecting convex part for vertical connection provided on the upper face of the horizontal board part and the connecting concave part D5 The side face of the horizontal board part D6 Distance between the connecting convex part for connecting diagonally and the connecting concave part D6 Distance between the connecting convex part for connecting diagonally and also connecting horizontal concave part provided on the side surface of the horizontal plate part D7 Horizontal The distance between the connecting convex part for oblique connection and the connecting concave part for oblique connection provided on the side of the board part

Claims (4)

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 is integrally provided with two or more connecting parts composed of a connecting convex part or / and a connecting concave part for connecting with an adjacent filling member,
When one filling member is connected to another adjacent filling member, the distance between each connecting portion of two or more connecting portions provided in one filling member and another filling member should be different. And the filling member for underground water tanks which made it start so that the connection start time of each connection part shifted | deviated.   The filling members are arranged in the horizontal direction with the side surfaces aligned, and the horizontal surfaces are combined, or the ends of the leg portions protruding from one horizontal surface of the filling member and the other horizontal surface of the filling member are The filling member is arranged in the vertical direction. The filling member is connected to a connecting portion for connecting in the horizontal direction to the filling member adjacent in the horizontal direction and to the filling member overlapped in the vertical direction. When connecting the filling member to the horizontal filling member and the vertical filling member at the same time, at least two or more of the connecting portions for connecting in the vertical direction are integrally provided. The connection start time of the horizontal and vertical connection parts starts to be shifted by making the distance between the connection parts for the vertical and the distance between the connection parts for the vertical connection different. Earth Water tank for filling member.   The filling member is provided with a leg portion protruding from one horizontal surface of the horizontal plate portion and the horizontal plate portion, and a connecting portion for horizontal connection is formed on a side surface of the horizontal plate portion, and the horizontal plate Connecting portions for connecting in the vertical direction are respectively formed on the horizontal surface of the portion and the front end surface of the leg portion, and when connecting the horizontal surfaces of the filling members together, the horizontal connection is ahead of the vertical connection. When connecting the tips of the leg portions of the filling member together, the connecting portion for horizontal connection and the connecting portion for vertical connection are set so that the horizontal connection starts later than the vertical connection. The filling member for groundwater tanks according to claim 1 or 2, wherein a portion is formed.   On the side surface of the horizontal plate portion of the filling member, there is integrally provided a connecting portion for oblique connection for connecting with the horizontal plate portion of the filling member that is superimposed on or below the horizontal plate portion of the filling member adjacent in the horizontal direction. And the connection start time of the connection part for the diagonal connection is shifted from the connection start time of the connection part for the horizontal connection and the connection start time of the connection part for the vertical connection. The ground water tank filling member according to any one of claims 1 to 3, wherein a connecting portion is formed.

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