JP5615728B2 - Unit connection joint - Google Patents

Description

  The present invention is a portion where a butting position of another unit that is arranged adjacent to each other in the horizontal direction is placed on the upper side of the place where the units arranged adjacent to each other in the horizontal direction are butted. The present invention relates to a unit connection joint for connecting units.

  There is an underground water storage tank (rainwater storage and penetration facility) for temporarily storing rainwater for the purpose of suppressing the occurrence of flooding and effective use of rainwater. As one of the methods for constructing this type of underground water storage tank In recent years, a technique using a resin-made water storage space forming block has been adopted.

  For example, in a recess formed by digging the ground, a block for forming a water storage space having a horizontal plate portion and a column portion projecting on one side thereof is arranged horizontally and vertically. A block in which the plate part is positioned on the lower end side and the column part protrudes upward, and a block in which the plate part is positioned on the upper end side and the column part protrudes downward is inverted. Then, they are alternately stacked in multiple stages and assembled into a rectangular parallelepiped (including cube) shape to form a skeleton having a water storage space inside. After that, a wall is provided on the outer peripheral portion and a top plate is attached to the upper surface. After covering, the underground water tank is constructed by backfilling the soil from above.

  By the way, in the underground water tank constructed as described above, a horizontal load due to earth pressure acting on the underground water tank from the surrounding soil, and an upper side of the top plate with respect to the underground water tank. It is necessary to support the vertical load of the soil existing in the earth covering part acting on the earth and the one placed on the ground directly above the underground water storage tank by a skeleton formed by assembling the blocks.

  Therefore, it is necessary to prevent positional displacement between the blocks forming the skeleton of the underground water storage tank, and the plate portion of the block disposed adjacent to the horizontal direction in a posture in which the plate portion is located on the upper end side. As shown schematically in FIG. 10, in the place where the plate portions of the horizontally adjacent blocks are arranged to face each other in the posture where the plate portion is positioned on the lower end side by reversing the upper side and the upper side of the abutted portions. , Positional deviation between adjacent blocks in the vertical direction (arrow a direction), horizontal positional deviation perpendicular to the arrangement direction of adjacent blocks (arrow b direction), and direction that separates adjacent blocks (arrows) It is necessary to prevent any misalignment in the c direction).

  Therefore, usually, using a joint member separate from the block, the joint member is disposed so as to straddle the plate portions of the blocks adjacent in the horizontal direction and the vertical direction, and both end portions of the joint member are arranged. The adjacent blocks are connected to each other by being locked or attached to the corresponding blocks.

  The joint for connecting the frames arranged vertically and horizontally in the horizontal direction is integrally provided on the frame itself to be connected, for example, on the four side surfaces of the frame, The locking plate insertion hole provided with a locking plate that protrudes more horizontally and has a locking claw at the tip, and a locking receiving portion for inserting the locking plate and engaging the locking claw, respectively There has been conventionally proposed a type in which the locking plates are inserted into the locking plate insertion holes and the locking claws are locked to the locking receiving portions between adjacent frames. For example, see Patent Document 1).

JP 2009-155872 A

  However, when connecting the plate parts of blocks adjacent to each other in the horizontal direction or the vertical direction using a joint member separate from the block, as in the conventional method of connecting blocks for water storage space formation, Although the displacement of the member in the longitudinal direction can be restrained satisfactorily, the restraining performance may be reduced in the direction orthogonal to the longitudinal direction of the joint member.

  Further, the joint member needs to be manufactured separately from the block to be connected, and management and conveyance may be performed separately from the block.

  Moreover, when assembling the block, it is necessary to connect the newly arranged block to the adjacent existing block every time a new block is arranged at a predetermined assembly position. The labor and time required for this increase.

  In the case of the one disclosed in Patent Document 1, it is possible to integrally provide a locking plate or a locking plate insertion hole as a joint in the frame body, but when connecting the frame bodies, the locking claw is engaged. In order to be locked by the stopper portion, it is necessary to bend the locking plate having the locking claw. Therefore, there is a concern that the locking plate is weak and may be damaged.

  Further, since the above-mentioned locking claw is locked to the locking receiving portion, the relative displacement in the vertical direction of the frame body to be connected is weakly restricted, and is orthogonal to the arrangement direction of the adjacent frame bodies. Restraining in the horizontal direction cannot be performed very firmly.

  Furthermore, in what was shown by patent document 1, since it is necessary to insert a locking plate into the corresponding locking plate insertion hole of an adjacent frame body at the time of connection of frame bodies, a frame body is horizontal direction. In the process of assembling vertically and horizontally, the frame that is arranged adjacent to two orthogonal sides of the frame to be newly assembled has already been assembled at the location where the new frame is already installed. The reality is that connection to the frame is very difficult.

  To avoid this problem during assembly work, connect all the frames arranged in the vertical or horizontal direction in one row, and then connect the frames in the row to the corresponding frames in the adjacent rows at once. However, if the number of arrays in each column is large, the weight or volume is increased, or the work space is limited, the work becomes difficult.

  And what was shown by patent document 1 is not shown at all about the idea of connecting the units laminated in the up-down direction.

  Therefore, the present invention is a portion where a butt portion of another unit arranged adjacent to each other in the horizontal direction is placed on the upper side of a portion where the units arranged adjacent to each other in the horizontal direction are faced to each other. The vertical displacement of the four units, the horizontal displacement perpendicular to the block arrangement direction between the horizontally adjacent blocks, and the horizontally adjacent blocks separated along the block arrangement direction. It is an object of the present invention to provide a unit connection joint that can favorably restrain the positional deviation in the direction to be generated without using another member.

The present invention, in order to solve the above problems, in correspondence to claim 1, the planar shape on the side surface portion of the plurality of sides of the planar shape in units of polygons, from the midpoint of the sides of said each side to one of the equidistant positions in the longitudinal direction of one end and the other end is provided with a locking protrusion protruding from the respective side outwardly, respectively, and to the other, for the locking protrusion provided in a plane shape corresponding to the planar shape of the locking recesses, respectively, further, the above engaging convex portion of the surface, an extension position of the side convexity locking is provided in the unit surface of the inner A pin protruding upward is integrally provided at any one of a pair of line-symmetric positions with the axis of symmetry as an inner diameter, and the pin can be inserted into the other position of the pair of line-symmetric positions. And a pin insertion hole having a depth.

  Further, in the above configuration, a locking convex portion and a locking concave portion are provided adjacent to the side surface portion of the unit.

  Furthermore, in each of the above-described configurations, the plane shape of the unit is an equilateral triangle, an isosceles triangle, a square, a rectangle, a rhombus, an isosceles trapezoid, a saddle shape, a square or a rectangle with one side of the isosceles triangle or one side of the equilateral triangle. The base of an isosceles triangle or the base of an equilateral triangle on the opposite side of a pentagon, regular hexagon, square, or rectangle each of which is a joined pentagon, base of an isosceles triangle or one side of an equilateral triangle with the bottom of an isosceles trapezoid. Hexagonal shape in which the bottom of the isosceles trapezoid is joined to one side of a square or rectangle. Hexagonal shape in which the bottoms of the isosceles trapezoids are joined to each other. The side of the planar shape of a unit that is abutted with an adjacent unit when the planar unit is arranged so as to be spread over the planar area The side surface portion, a structure in which the provided projections and locking recesses for locking.

  Similarly, in each configuration described above, the planar shape of the unit is a regular triangle, square, or regular hexagon, and rotation is performed with the center of the planar shape of the unit as the center of symmetry on the side surface of each side of the planar shape of the unit. It is set as the structure which provided the convex part for a latching and the recessed part for a latching by the symmetrical arrangement | positioning.

According to the unit connection joint of the present invention, the following excellent effects are exhibited.
(1) to the side surface portion of the plurality of sides of the planar shape planar shape in the unit of polygon, either from the midpoint of the sides equidistant a position in the longitudinal direction of one end and the other end of said each side on the other hand, it is provided with a locking protrusion protruding from the respective side outwardly, respectively, and the other one, respectively the locking recess of the planar shape corresponding to the planar shape of the convexity the locking, Further, at one of a pair of line symmetric positions with the surface of the locking convex part and the extended line position of the side where the locking convex part is provided on the inner unit surface as a symmetry axis. In addition, a pin projecting upward is integrally provided, and a pin insertion hole having an inner diameter and a depth into which the pin can be inserted is provided at one of the pair of line symmetrical positions. So, the posture that the top and bottom are reversed above the unit placed horizontally When another unit arranged adjacent to each other in the horizontal direction is placed on top of each other, the engaging convex portion and the engaging concave portion provided in each unit are fitted between the adjacent units in the horizontal direction and provided in each unit. By simply inserting a pin into a pin insertion hole of a unit arranged in an oblique direction, a set of units stacked in a vertical direction and another stacked in a vertical direction adjacent to it are separated. Relative displacement in the vertical direction with the set of units in the horizontal direction, relative displacement in the horizontal direction perpendicular to the unit arrangement direction between the units arranged adjacent in the horizontal direction, and units arranged adjacent in the horizontal direction in the unit arrangement direction Relative displacement in the direction of separating along can be constrained without using a separate member.
(2) Furthermore, it becomes possible to increase the restraining force of the relative displacement in each direction described above.
(3) Moreover, since the binding force of the unit connecting joint according to the present invention can be exerted by assembling only by the vertical movement of each unit, the unit assembly operation can be facilitated. it can.
(4) By adopting a configuration in which the locking convex portion and the locking concave portion are provided adjacent to the side surface portion of the unit, the units arranged in the horizontal direction and the stacking direction can be Even when the relative displacement is constrained, it is possible to provide an advantageous configuration for grouping portions where a load acts on the unit itself into a certain region.
(5) The planar shape of the unit is an equilateral triangle, an isosceles triangle, a square, a rectangle, a rhombus, an isosceles trapezoid, a saddle, a square or a shape in which one side of an isosceles triangle is joined to one side of a square or a rectangle. A pentagon, equilateral triangle base or equilateral triangle base joined to the lower base of the isosceles trapezoid, pentagon, regular hexagon, square or rectangle opposite sides of the isosceles triangle base or equilateral triangle base Hexagon of the shape of a hexagon, a square or a rectangle joined to the bottom of an isosceles trapezoidal shape, a hexagon of a shape where two isosceles trapezoids are joined together at the bottom, or the four corners of a square or a rectangle A notch-shaped octagon is formed, and when the planar unit is arranged so as to be spread over the planar region, the locking projection is formed on the side surface portion of the planar side of the unit that faces the adjacent unit. The above-mentioned plane region is arranged in an upside down orientation on the upper side of the above unit arranged so as to be arranged vertically and horizontally in a horizontal plane and spread over a certain plane region. In the state where the units arranged so as to be spread are placed, all the units arranged in the horizontal direction and the vertical direction can be easily and surely connected to the planar area.
(6) The unit has a plane shape that is a regular triangle, square, or regular hexagon, and a rotationally symmetrical arrangement with the center of the unit's plane shape as the center of symmetry on the side surface of each side of the unit's plane shape. By adopting a configuration in which the locking convex portion and the locking concave portion are provided, the handleability of the unit 1 can be improved.

FIG. 4 is a schematic plan view of a unit including the unit connection joint as an embodiment of the unit connection joint of the present invention. (A) is a figure which expands and shows the A section of FIG. 1, (b) is a BB direction arrow directional view of (a). FIG. 2 shows how to use the unit connection joint of FIG. 1, wherein (a) shows two other units horizontally adjacent to each other on the upper side of two horizontally adjacent units. (B) is a schematic perspective view showing a state in which two other units in a state where the top and bottom are inverted are arranged on top of two units adjacent to each other in the horizontal direction. The other form of implementation of this invention is shown, (A) (B) is a schematic plan view which shows the example which changed arrangement | positioning of the convex part for latching, and the concave part for latching. As still another embodiment of the present invention, another example of a unit provided with the unit connection joint of the present invention is shown. (A) shows a case where the planar shape of the unit is an equilateral triangle. FIG. 4 is a schematic plan view showing cases where the planar shape of the unit is an isosceles triangle. As still another embodiment of the present invention, another example of a unit provided with a unit connection joint according to the present invention is shown. (A) is a case where the planar shape of the unit is a rectangle, (B) The plan view of the unit is an isosceles trapezoid, (c) is a schematic plan view showing the case where the plan view of the unit is a rhombus, and (d) is the plan view showing the case where the plan view of the unit is a bowl. is there. As still another embodiment of the present invention, another example of a unit provided with a unit connection joint according to the present invention is shown. (A) shows a planar shape of a unit, and isosceles triangles on one side of a square. (B) is a schematic plan view showing the unit planar shape, which is a pentagon formed by joining the base of an isosceles triangle and the bottom of an isosceles trapezoid. It is. As still another embodiment of the present invention, another example of a unit provided with a unit connection joint according to the present invention is shown. (A) shows a case where the planar shape of the unit is a regular hexagon. ) Shows the unit's planar shape as a hexagon formed by joining the bases of isosceles triangles to the opposite sides of the square, and (c) shows the unit's planar shape and the bottom of the isosceles trapezoid on one side of the square. (D) is a schematic plan view showing a case where the planar shape of the unit is a hexagon formed by joining the bottoms of two isosceles trapezoids, respectively. . As still another embodiment of the present invention, another example of a unit provided with a unit connecting joint according to the present invention is shown. (A) is a plan view of the unit, in which eight square corners are cut out. (B) is a schematic plan view showing a case where the planar shape of the unit is an octagon with four corners of a rectangle cut out. It is the schematic which shows the kind of position shift requested | required to prevent in the connection part of adjacent blocks in the state which assembled the block for conventional water storage space formation.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  FIGS. 1 to 3 (a) and 3 (b) illustrate an embodiment of a unit connection joint according to the present invention, in which a planar shape is a square as a line-symmetric shape, and they are connected in a horizontal and vertical arrangement. In this way, a case where the present invention is applied to a certain type of unit is shown as follows.

  That is, as shown in FIG. 1, the unit connecting joint of the present invention is formed from the midpoint 2 of the corresponding side of the square in the planar shape of the unit 1 on the four sides of the planar square unit 1. A locking projection 3 that protrudes outward from the side is provided at one of the positions at one end side and the other end side in the longitudinal direction of the side, and the locking projection is provided on the other side. A planar concave recess 4 corresponding to the planar shape of the portion 3 is provided.

  Further, as shown in detail in FIGS. 2 (a) and 2 (b), the square locking convex portion 3 is provided on the surface of the locking convex portion 3 and the surface of the unit 1 inside thereof. A pin 6 projecting a certain dimension upward from the surface is integrally formed at any one of a pair of line-symmetrical positions where the extended line position of a side is a symmetry axis 5 as shown by a one-dot chain line in FIG. The pin insertion hole 7 is provided and has an inner diameter corresponding to the outer diameter of the pin 6 at one of the other positions and has a depth greater than or equal to the vertical dimension of the pin 6 or is vertically penetrated. It is set as the structure which provided.

  More specifically, in the unit 1 shown in FIG. 1, for example, the upper side in the figure will be described. At the position of the distance L1 from the midpoint 2 of the side to one end side in the longitudinal direction of the side (right side in the figure) The locking concave portion 4 is provided at a position of a distance L2 from the middle point 2 of the side to the one end side in the longitudinal direction of the side so that the locking convex portion 3 is provided and adjacent to the locking convex portion 3. It is provided.

  Therefore, the locking concave portion 4 and the locking convex portion 3 are provided adjacent to each other at distances L1 and L2 from the middle point 2 of the side to the other longitudinal side of the side (left side in the figure). is there.

  Further, pins 6 projecting upward in the same arrangement are provided on the upper surfaces of the respective locking projections 3, and the extension lines of the corresponding sides of the square are arranged at the locations where the pins 6 are installed. Pin insertion holes 7 are respectively provided on the surface of the unit 1 at a position that is line-symmetric with respect to the axis of symmetry 5 (see FIG. 2A).

  Regarding the other side of the unit 1, the upper side of the unit in FIG. 1 described above in view of the fact that the planar shape of the unit 1 is a square, that is, a rotationally symmetrical shape in addition to a line-symmetrical shape. The positions of the locking convex part 3, the locking concave part 4, the pin 6 and the pin insertion hole 7 provided on the center 1 are rotated on each side with the center of the square which is the planar shape of the unit 1 as the center of symmetry. The locking projection 3, the locking recess 4, the pins 6, and the pin insertion holes 7 are provided in a rotationally symmetrical arrangement.

  As a result, the unit 1 is configured to include the locking convex portion 3, the locking concave portion 4, the pin 6, and the pin insertion hole 7 in a rotationally symmetrical arrangement on each of the four sides. Therefore, when the units 1 are arranged in the horizontal direction, as shown in FIG. 2 (a), a unit 1 and another unit 1 as shown by a two-dot chain line in FIG. The locking projection 3 and the locking recess 4 can be fitted to each other. Further, when the two units 1 are arranged adjacent to each other as described above, the four sides of each unit 1 are arranged in a rotationally symmetric arrangement with the center of the plane shape square of the unit 1 as the center of symmetry. Since the stop convex portion 3 and the locking concave portion 4 are provided and the pin 6 and the pin insertion hole 7 are provided so as to correspond to the locking convex portion 3, each unit 1 is Both the locking projections 3 and the locking recesses 4 can be fitted to each other on either side of the planar square. Therefore, when the two units 1 are arranged adjacent to each other, each unit 1 can be individually allowed to rotate every 90 degrees in a horizontal plane having the same planar shape, thereby improving the handleability of the unit 1. You can make it.

  A case where the assembly in the horizontal direction and the stacking direction is performed using the unit 1 having the unit connection joint of the present invention having the above-described configuration will be described with reference to FIGS. In FIGS. 3A and 3B, in order to identify the four units 1 shown in the figure, the reference numerals of the units are described as 1a, 1b, 1c, and 1d. In addition, the locking projection 3, the locking recess 4, the pin 6, and the pin insertion hole 7 for each unit 1 a, 1 b, 1 c, 1 d are also given the same alphabet so that they can be identified. It is. For convenience of illustration, only two portions 1c and 1d arranged in an upside down orientation are shown adjacent to the other units 1a, 1b, 1c and 1d in the horizontal and vertical directions. is there.

  That is, as shown in FIG. 3 (a), when the unit 1a and the unit 1b having a posture in which the pin 6 protrudes upward are arranged adjacent to each other in the horizontal direction, the locking convex portion 3a of the unit 1a becomes the unit 1b. At the same time, the locking projection 3b of the unit 1b is fitted into the locking recess 4a of the unit 1a.

  Further, when the unit 1c and the unit 1d which are turned upside down so that the pin 6 faces downward are arranged adjacent to each other in the horizontal direction, the locking projection 3c of the unit 1c becomes the locking recess of the unit 1d. At the same time as being fitted into 4d, the locking projection 3d of the unit 1d is fitted into the locking recess 4c of the unit 1c.

  In the state where the units 1c and 1d are turned upside down as described above, as shown in FIG. 3 (a), the pins 6a and the pin insertion holes 7a provided in the unit 1a are The pin insertion hole 7d and the pin 6d of the unit 1d can be arranged on the top, and the unit 1dc pin insertion is directly above the pin 6b and the pin insertion hole 7b provided in the unit 1b. The holes 7c and the pins 6c can be arranged respectively.

  Therefore, as shown in FIG. 3 (b), when the unit 1c and the unit 1d in the posture in which the top and bottom are inverted are arranged above the adjacent units 1a and 1b, The pin 6a of 1a is inserted into the pin insertion hole 7d of the unit 1d located above, and the pin 6d of the unit 1d is inserted into the pin insertion hole 7a of the unit 1a located below the unit 1d. Is done.

  Further, the pin 6b of the unit 1b is inserted into the pin insertion hole 7c of the unit 1c located above, and the pin 6c of the unit 1c is inserted into the pin insertion of the unit 1b located below the unit 1b. It comes to be inserted into the hole 7b.

  Assuming that the units 1c and 1d arranged in the horizontal direction in a vertically inverted posture are stacked on the units 1a and 1b arranged in the horizontal direction as described above, the units 1a and 1b Since the locking projections 3a, 3b and the locking recesses 4a, 4b are fitted to each other, relative displacement in the horizontal direction perpendicular to the arrangement direction of the units 1a and 1b is prevented. .

  Similarly, with respect to the unit 1c and the unit 1d, since the locking convex portions 3c and 3d and the locking concave portions 4c and 4d are fitted to each other, the unit 1c and the unit 1d are perpendicular to the arrangement direction of the units 1c and 1d. Relative displacement in the horizontal direction is prevented.

  The unit 1c is placed on the upper side of the unit 1a. At this time, the unit 1d is placed on the upper side of the locking projection 3a of the unit 1a. ing. The upper surface of the unit 1a is in contact with the lower side of the locking projection 3d of the unit 1d. Therefore, relative displacement between the unit 1a and the unit 1d is prevented such that the unit 1a relatively moves upward and the unit 1d moves downward.

  On the other hand, the unit 1d is placed on the upper side of the unit 1b. At this time, the unit 1c is placed on the upper side of the locking projection 3b of the unit 1b. ing. The upper surface of the unit 1b is in contact with the lower side of the locking projection 3c of the unit 1c. Therefore, relative displacement between the unit 1b and the unit 1c is prevented such that the unit 1b relatively moves upward and the unit 1c moves downward.

  As a result, the unit 1a and unit 1c stacked in the vertical direction and the unit 1b and unit 1d stacked in the vertical direction are prevented from being relatively displaced in the vertical direction. .

  Further, the pin 6a of the unit 1a is inserted into the pin insertion hole 7d of the unit 1d, and the pin 6d of the unit 1d is inserted into the pin insertion hole 7a of the unit 1d. As for the unit 1a and the unit 1d, the relative displacement in the direction separating in the horizontal direction is restrained by the pins 6a and 6d and the pin insertion holes 7a and 7d.

  On the other hand, the pin 6b of the unit 1b is inserted into the pin insertion hole 7c of the unit 1c, and the pin 6c of the unit 1c is inserted into the pin insertion hole 7b of the unit 1b. About the unit 1b and the unit 1c, the relative displacement of the direction which leaves | separates to a horizontal direction is restrained by the mutual pin 6b, 6c and the pin insertion hole 7b, 7c.

  The unit 1a and the unit 1b are abutted with each other, and the unit 1c and the unit 1d are abutted with each other because the sides are abutted with each other. Relative displacement in the direction of separating the unit 1b is indirectly prevented through the unit 1c and the unit 1d.

  Similarly, relative displacement in the direction in which the unit 1c and the unit 1d, which are adjacently arranged in the horizontal direction, are separated from each other is indirectly prevented through the unit 1a and the unit 1b.

  As described above, according to the unit connection joint of the present invention, the units 1c and 1d that are adjacently arranged in an upside down posture are stacked on the upper side of the units 1a and 1b that are adjacently arranged in the horizontal direction. And fitting of corresponding ones of the locking projections 3a, 3b, 3c, 3d and the locking recesses 4a, 4b, 4c, 4d provided in each of the units 1a, 1b, 1c, 1d, The units 6a, 6b, 6c, and 6d provided in each unit 1a, 1b, 1c, and 1d are stacked in the vertical direction by a simple operation of inserting them into the corresponding pin insertion holes 7a, 7b, 7c, and 7d. Relative displacement in the vertical direction between the set of the unit 1a and the unit 1c and the set of the unit 1b and the unit 1d that are stacked in the vertical direction, the units 1a and 1b that are adjacently arranged in the horizontal direction, and The relative displacement in the horizontal direction perpendicular to the unit arrangement direction between the units 1c and 1d, the units 1a and 1b arranged adjacent to each other in the horizontal direction, and the units 1c and 1d along the unit arrangement direction. Any relative displacement in the direction of separation can be constrained without using a separate member.

  Further, the unit 1a and the unit 1b are engaged with the locking projections 3a and 3b and the locking recesses 4a and 4b provided on the side surfaces, and the unit 1c and the unit 1d are mounted on the side surfaces. The provided locking projections 3c, 3d and the locking recesses 4c, 4d are fitted, and the unit 1a and the unit 1d are connected via the pins 6a, 6d and the pin insertion holes 7a, 7d. The unit 1b and the unit 1c are connected through the pins 6b and 6c and the pin insertion holes 7b and 7c, so that the binding force of the relative displacement in each direction described above is increased. It becomes possible.

  In addition, the engaging projections 3a, 3b, 3c, 3d of the units 1a, 1b, 1c, 1d and the corresponding fittings of the locking recesses 4a, 4b, 4c, 4d, The insertion of the pins 6a, 6b, 6c, 6d into the corresponding pin insertion holes 7a, 7b, 7c, 7d can be performed only by moving the units 1a, 1b, 1c, 1d in the vertical direction. Assembling work of the units 1a, 1b, 1c, 1d can be facilitated.

  Further, as shown in FIG. 1, the unit 1 having the unit connecting joint according to the present invention has a square planar shape, and each of its four sides has a center of the planar square of the unit 1. Since the locking convex portion 3, the locking concave portion 4, the pin 6 and the pin insertion hole 7 are provided in a rotationally symmetric arrangement with respect to the center of symmetry, the unit 1 is spread over a certain plane area. They can be arranged side by side. Therefore, a state in which the unit 1 arranged so as to be laid down in the plane region in an upside down posture is placed on the upper side of the unit 1 arranged so as to be laid out vertically and horizontally in a horizontal plane. Thus, the locking projections 3 and the locking recesses 4 are fitted to each other in the units 1 adjacent to each other in the horizontal direction, and the pins 6 and the pin differences between the units arranged close to each other in the diagonally up and down direction. By connecting the insertion holes 7 to each other, it becomes possible to easily and reliably connect all the units 1 arranged in the horizontal direction and the vertical direction in the plane area.

  Next, FIGS. 4A and 4B show an example in which the arrangement of the locking projection 3 and the locking recess 4 in the unit 1 is changed as another embodiment of the present invention. It is like that.

  That is, in the above embodiment, as shown in FIG. 1, it has been described that two sets of the locking projections 3 and the locking recesses 4 disposed adjacent to each side of the unit 1 are provided. 1 is provided with a locking projection 3 at one of the positions that are equidistant from the middle point 2 of the side to the one end side and the other end side in the longitudinal direction of the side. If it is set as the structure provided with the recessed part 4 for an arrangement | positioning, as shown to FIG. .

  Further, as shown in FIG. 4B, three or more sets of locking convex portions 3 and locking concave portions 4 may be provided. Further, the locking convex portion 3 and the locking concave portion 4 can be used to restrain any relative displacement in the three directions as described above for the units 1 arranged in the horizontal direction and the stacking direction. Considering from the standpoint that the portion where the load acts on the unit 1 itself is grouped into a certain area, the locking projection 3 and the locking recess 4 are provided adjacent to each side of the unit 1. Although it is desirable, the locking convex part 3 and the locking concave part 4 do not necessarily have to be arranged adjacent to each other as shown in FIG.

  4 (a) and 4 (b), the same components as those shown in FIG.

  In each of the above-described embodiments, the planar shape of the unit 1 to which the unit connection joint of the present invention is applied is shown as a square shape. If the unit 1 is arranged in a line-symmetric shape so that the sides of the planar shape of both units 1 can be arranged in an overlapping manner, the planar shape of the unit 1 can be changed to a correct shape as shown in FIG. A triangle or an isosceles triangle as shown in FIG. Alternatively, a rectangle as shown in FIG. 6 (a), an isosceles trapezoid as shown in FIG. 6 (b), a rhombus as shown in FIG. 6 (c), or a saddle shape as shown in FIG. It may be a quadrilateral with two pairs having the same side length.

  Further, when the planar shape of the unit 1 is a polygon having five or more corners, for example, as shown in FIG. A shape in which the base of an isosceles triangle or one side of an equilateral triangle is joined to one side of the rectangle (see the description of the alternate long and short dash line in unit 1 in the upper left of FIG. The shape is shown in Fig. 7 (b), or the lower base of an isosceles triangle or one side of an equilateral triangle is joined to the bottom of the isosceles trapezoid (Fig. 7 (b) (See the description of the alternate long and short dash line in the unit 1 in the upper left), and in the figure, the shape of the lower base of the isosceles trapezoid is joined to the base of the isosceles triangle).

  Further, the planar shape of the unit 1 is a regular hexagon as shown in FIG. 8 (a), or a square or rectangular opposite side as shown in FIG. Joined shape (see the description of the alternate long and short dash line in unit 1 in the upper left of FIG. 8 (B), the figure shows the shape when the bases of isosceles triangles with different height dimensions are joined to the opposite sides of the rectangle) Hexagon, as shown in Fig. 8 (c), a shape in which the bottom of an isosceles trapezoid is joined to one side of a square or rectangle (see the description of the alternate long and short dash line in unit 1 in the upper left of Fig. 8 (c), rectangular in the figure The hexagonal shape of the case where the lower base of the isosceles trapezoid is joined to one side), and the shape of joining the two isosceles trapezoids at the bottoms as shown in FIG. (See the description of the alternate long and short dash line in unit 1 in the upper left) It may be square.

  Furthermore, the planar shape of the unit 1 is an octagon with four corners cut out as shown in FIG. 9 (a), or an eight with the four corners cut out as shown in FIG. 9 (b). It may be a square.

  The units 1 shown in FIGS. 5 (a) to (b) to FIG. 9 (a) and (b) are arranged so that the units 1 are spread on the plane in the planar shape of the unit 1, as shown in the respective drawings. As shown in FIGS. 2 (a) and 2 (b), each side that will be placed in abutment with another unit 1 that is placed adjacent to each other in the plane at the center of the side in the longitudinal direction of each side. Similar locking projections 3 and locking recesses 4 are provided adjacent to each other. For convenience of illustration, the description of the locking projection 3 and the pins 6 and pin insertion holes 7 provided on the surface of the unit 1 inside thereof is omitted.

  Also by the unit 1 having the unit connection joint of the present invention shown in FIGS. 5 (a) to (b) to FIG. 9 (b) to (b), the unit 1 is vertically and horizontally so as to be spread over a certain plane area. Are arranged side by side, and on the upper side, the unit 1 arranged so as to be laid down in the plane area in an upside down posture is placed, and the locking projections 3 between the units 1 adjacent to each other in the horizontal direction are placed. And the locking recesses 4 are mutually fitted, and the respective units 6 arranged close to each other in the diagonally up and down direction are connected to each other with the pin 6 and the pin insertion hole 7 in the horizontal direction and the plane region. It is possible to easily and reliably connect all the units 1 arranged in the vertical direction.

  Furthermore, when the planar shape of the unit 1 is an equilateral triangle as shown in FIG. 5 (a), a rhombus as shown in FIG. 6 (c), and a regular hexagon as shown in FIG. Since each planar shape is a rotationally symmetric shape, the locking convex portion 3 and the locking concave portion 4 are arranged on each side so as to be rotationally symmetric with the center of the planar shape of the unit 1 as the center of symmetry. It is desirable to provide each pin 6 and pin insertion hole 7 respectively. In this way, when the units 1 are arranged in the horizontal direction, the individual units 1 can be allowed to rotate in a horizontal plane in which the planar shape of the units 1 is the same. The effect of improving the ease of handling can be expected.

  In addition, this invention is not limited only to the said embodiment, You may change suitably the planar shape and size of the convex part 3 for latching. Depending on the planar shape of the locking projection 3, the planar shape of the locking recess 4 may be changed as appropriate.

  When the planar shape of the unit 1 is rectangular, the arrangement of the locking projections 3 and the locking recesses 4 on the long side and the short side may be appropriately changed.

  The positions where the pins 6 and the pin insertion holes 7 are provided in the unit 1 may be reversed. That is, a pin insertion hole 7 is provided at a predetermined position of the locking projection 3, and the symmetrical axis 5 (see FIG. 2 (b)) is extended on the extension line of the corresponding side with respect to the position where the pin insertion hole 7 is provided. The pin 6 may be provided in a projecting manner at a line symmetrical position.

  The unit connection joint of the present invention is preferably provided on all sides of the unit 1 in a side plane that is arranged in association with the other unit 1 in a certain planar shape, but is not necessarily attached to the other unit 1. It does not have to be provided on all sides arranged together. In this case, a side that does not include the unit connection joint of the present invention may be connected using another connection means.

  The unit connection joint of the present invention is a water storage space as long as it is a unit that is used by placing the units 1 arranged in the horizontal direction in an upside down posture on the upper side of the units 1 arranged in the horizontal direction. You may apply to the connection part of arbitrary units other than the block for formation. Furthermore, the unit 1 to which the unit connection joint of the present invention is applied needs to connect four units 1 arranged so that at least one side in the planar shape of the unit 1 is arranged close to each other in the horizontal direction and the vertical direction. Anything is acceptable.

  Furthermore, if the unit connecting joint of the present invention is a unit 1 having at least one side in the planar shape that is arranged close to each other in the horizontal direction and the vertical direction, the adjacent units in the planar shape are connected to each other. You may make it use for the connection of the units 1 in which the peripheral part of planar shape of the unit 1 which is not concerned with the connection of this is formed in the curve.

  Of course, various modifications can be made without departing from the scope of the present invention.

1, 1a, 1b, 1c, 1d, unit 2 middle point 3, 3a, 3b, 3c, 3d locking projection 4, 4a, 4b, 4c, 4d locking recess 5 symmetry axis 6, 6a, 6b, 6c, 6d pin 7, 7a, 7b, 7c, 7d pin insertion hole

Claims (4)

A side surface portion of the plurality of sides of the planar shape planar shape in the unit of polygon, said to one of the equidistant positions in the longitudinal direction of one end and the other end of the middle from the sides of each side, provided locking projections projecting from respective side outwardly, respectively, and the other one, respectively the locking recess of the planar shape corresponding to the planar shape of the engaging convex portion, further, the The surface of the locking projection and the one of a pair of line-symmetrical positions with the extended line position of the side where the locking projection is provided on the inner unit surface as an axis of symmetry upward A projecting pin is provided integrally , and a pin insertion hole having an inner diameter and a depth into which the pin can be inserted is provided at one of the pair of line symmetrical positions. The unit connection joint.   2. The unit connection joint according to claim 1, wherein a locking convex portion and a locking concave portion are provided adjacent to each other on a side surface portion of the unit.   The unit's planar shape is an equilateral triangle, an isosceles triangle, a square, a rectangle, a rhombus, an isosceles trapezoid, a saddle, a pentagon with a shape of a square or a rectangle joined to the base of an isosceles triangle or one side of an equilateral triangle, two A hexagon with a base of an equilateral triangle or a base of an equilateral triangle joined to the lower base of an isosceles trapezoid, a hexagon, a regular hexagon, a square or a rectangle and the opposite sides of the isosceles triangle or one side of the equilateral triangle. Hexagon with a shape that joins the bottom of an isosceles trapezoid to one side of a square or rectangle, Hexagon with a shape that joins two isosceles trapezoids at the bottom, or four corners of a square or rectangle are cut out When the planar unit is arranged so as to be spread over the planar region, the engaging convex part is engaged with the side surface part of the planar side of the unit that abuts with the adjacent unit. Claim 1 or 2 units connection joint according to as provided use recess.   The unit's planar shape is a regular triangle, square, or regular hexagon, and it is used for locking in a rotationally symmetrical arrangement with the center of the unit's planar shape as the center of symmetry on the side of each side of the unit's planar shape. 3. The unit connecting joint according to claim 1, wherein a convex portion and a concave portion for locking are provided.

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