KR20130059247A - Block - Google Patents

Abstract

The block has a convex portion formed on the front side and a concave portion formed on the rear side in a shape corresponding to the convex portion. In the longitudinal cross-sectional shape in the case where the bottom surface of the block is cut in a vertical plane along the front and rear directions, the upper surface of the convex portion and the upper surface of the concave portion extending from the distal end of the convex portion toward the base end in the upper surface of the convex portion. In the concave portion, the upper portion of the concave portion extending from the inner end toward the opening is formed in a deflection shape in the front-back direction. In the longitudinal cross-sectional shape, the lower contour of the convex portion extending from the tip of the convex portion toward the proximal end on the upper surface of the convex portion, and the lower contour of the concave portion extending from the inner end of the concave portion toward the opening in the lower surface of the concave portion are forward in the front-rear direction. It is formed in a shape that is not lifted.

Description

Block {BLOCK}

TECHNICAL FIELD This invention relates to the block for marking attached to a sidewalk or a public space, for example.

Conventionally, as this kind of block, the block described in Unexamined-Japanese-Patent No. 2004-263370 is known, for example. In this block, the front side of the block main body which forms a flat plate is formed with the convex opening extended over the full length of the front side in the longitudinal direction. On the rear side opposite to the front side, a concave tube is formed to fit with the convex jaw formed in another adjacent block at the time of block placement. These convex and recessed grooves are formed so that the cross-sectional shape of the part which fits mutually may form the arc shape of substantially the same size.

In such a conventional block, as shown in Fig. 12, a plurality of blocks 51, 52, and 53 (shown three in the same figure) on a sand cushion layer 42 made of sand sand sprayed on a roadbed 41. ) Are sequentially placed in a series state in which convex jaws 61 and concave jaws 62 of adjacent blocks are fitted. At the time of laying, on the sand cushion layer 42, blocks 51, which are laid on the sand cushion layer 42, in the serial direction toward the most end block 52 in the serial direction, sandwich the bottom surface 71. By advancing in surface contact on the surface of the layer 42, the convex jaw 61 of the subsequent block 51 fits into the concave jaw 62 of the last block 52.

However, in the case of the block of the publication, when the subsequent block 51 at the time of laying advances toward the end block 52, the bottom surface 71 of the block 51 is the surface of the sand cushion layer 42. Since the image slides, the sand on the surface of the sand cushion layer 42 is dragged. For this reason, there exists a problem that the uniform surface state of the sand cushion layer 42 will be made in a mess.

Further, even after laying, when the convex jaw 61 and the concave jaw 62 are fitted to each other and an irregular load is applied to the seams between the adjacent blocks 51, 52, 53 from each other, the curved surface having a circular cross section, The protrusions 61 and the recesses 62 slide to move relative to the curved direction. Therefore, the position of the other block is shifted with respect to one block, and there exists a problem that the flatness of a seam cannot be maintained.

An object of the present invention is to provide a paving block that can enjoy excellent workability during laying on a sand cushion layer with an even surface, and that can maintain good planarity of seams between adjacent blocks even after laying. To provide.

An embodiment of the present invention provides a block having a convex portion formed on the front side and a rear side opposite to the front side and having a concave portion corresponding to the convex portion. In the cross-sectional shape when the block is cut in a plane perpendicular to the protruding direction of the convex portion and the depth direction of the concave portion with the bottom surface of the block facing down, the convex portion is formed on the upper surface of the convex portion. A convex upper contour extending from the distal end of the convex portion toward the base end of the convex portion, and a lower convex contour extending from the distal end of the convex portion toward the base of the convex portion at the lower surface of the convex portion. And a recess, wherein the recess corresponds to an upper end of the recess extending from the inner end of the recess toward the opening of the recess and an inner end of the recess on the lower surface of the recess. It has a recess lower contour extending toward the opening of the recess. The upper portion of the convex portion and the upper portion of the concave portion are formed in a shape that sags toward the leading end of the convex portion and the inner end of the concave portion in the protruding direction of the convex portion and the depth direction of the concave portion. The lower portion of the convex portion and the concave portion are formed in the shape of the convex portion in the protruding direction and in the depth direction of the concave portion so as not to lag toward the tip of the convex portion and the bottom of the concave portion.

1 is a perspective view showing a block of a first embodiment according to the present invention.
FIG. 2 is a perspective view seen from a direction different from that of FIG. 1 of the block shown in FIG.
3 is a front view illustrating the block illustrated in FIG. 1.
4 is an enlarged partial cross-sectional view showing the main part of the block shown in FIG. 1.
FIG. 5A is a schematic front view showing a state during laying of the block shown in FIG. 1. FIG.
FIG. 5B is a partially enlarged view of FIG. 5A.
FIG. 6 is a schematic front view showing a laying state of the block shown in FIG. 1. FIG.
7 is a schematic front view illustrating a laying state of a block according to the second embodiment.
8 is a schematic front view showing a laying state of a block of the third embodiment.
9 is a schematic front view showing a laying state of a block of the fourth embodiment.
10 is a schematic front view illustrating a laying state of a block according to the fifth embodiment.
FIG. 11A is a front view illustrating the block of the sixth embodiment. FIG.
FIG. 11B is a perspective view of the block of FIG. 11A. FIG.
12 is a schematic front view showing a state when laying a conventional block.

(First embodiment)

EMBODIMENT OF THE INVENTION Hereinafter, the 1st Embodiment which actualized this invention with the paving block attached to the sidewalk or a public space, for example, is demonstrated with reference to FIGS.

As shown in FIG. 1 and FIG. 2, the block 11 of the present embodiment is provided with a block body 12 made of concrete, which is rectangular in shape and flat in plan view. The convex part 17 is formed in the front side surface 13 among the four long side surfaces 13, 14, 15, 16 of the rectangular shape in the block main body 12. As shown in FIG. The rear side surface 15 opposite to the front side surface 13 has a shape corresponding to the convex portion 17, that is, a concave portion that can fit with the convex portion 17 formed on the front side surface 13 of the other block 11. 18 is formed.

In addition, the convex part 17 and the recessed part 18 are more specifically the front side surface 13 so that it may extend along the longitudinal direction of the side surface (front side surface 13 and back side surface 15) in which each is formed. ) And over the entire length of the rear side 15 in the longitudinal direction. 1 to 3, the bottom surface 19 of the block body 12 is formed in a planar shape. In the block body 12, a plurality of grooves 20a extending along the left and right directions are formed on the upper surface 20 serving as the design surface at substantially the same pitch.

As shown in FIG. 3 and FIG. 4, the convex part 17 and the recessed part 18 are the protrusion direction and concave of the convex part 17 in the state which made the bottom surface 19 of the block main body 12 face down. In the cross-sectional shape (hereinafter, referred to as a "vertical cross-sectional shape") in the case of cutting the block 11 in a vertical plane along the front-rear direction which becomes the depth direction of the part 18, several features are shown below. Have

First, the first feature will be described. In the longitudinal cross-sectional shape of the block 11, the convex part 17 moves the base end (rear in FIG. 3) of the convex part 17 from the front end 17a of the convex part 17 to the upper surface of the convex part 17. As shown in FIG. It has a convex upper contour 17b extending toward it. The upper convex part 17b of the said convex part is formed in the shape of a deflection toward the front-end | tip 17a of the convex part 17 in the front-back direction which is the protrusion direction of the convex part 17. As shown in FIG. That is, in the convex part 17, the substantially whole surface shape of the part corresponding to the convex part upper contour part 17b in the longitudinal cross-sectional shape of the block 11 is the front end 17a of the convex part 17. It is formed in the shape of the inclined surface of the deflection gradient (tilt).

 Similarly, in the longitudinal cross-sectional shape of the block 11, the recessed part 18 is the opening of the recessed part 18 in the inner end 18a of the recessed part 18 to the upper surface of the recessed part 18 (in FIG. And a concave upper contour 18b extending toward the rear side, and the concave upper contour 18b has a front-rear direction in the depth direction of the concave portion 18, so that the inner end 18a of the concave portion 18a. It is formed in the shape of an inclination toward (). That is, in the recessed part 18, almost the inner surface shape of the part corresponding to the recessed upper contour part 18b in the longitudinal cross-sectional shape of the block 11 is the inner end 18a of the recessed part 18. FIG. It is formed in the shape of an inclined plane of the forward deflection gradient.

As shown in FIG. 4, the convex part 17 fits in the recessed part 18, and is laid. The convex part upper contour part 17b part of the convex part 17 and the upper part contour part 18b part of the concave part 18 are in this state so that the inclined surfaces of a deflection gradient may contact surface in the front-back direction. They are each formed in the shape of inclined surfaces inclined at substantially the same angle at the same height.

Next, a second feature will be described. In the longitudinal cross-sectional shape of the block 11, the convex part 17 extends toward the base end of the convex part 17 from the distal end 17a of the convex part 17 toward the lower surface of the convex part 17. It has the contour part 17c. The lower convex part 17c of the convex part is formed in the shape including the linear part SL extended horizontally toward the front-end | tip 17a of the convex part 17 in the front-back direction which is the protrusion direction of the convex part 17. FIG. It is. In the convex part 17, the linear part SL occupies most of the convex part lower contour part 17c in the longitudinal cross-sectional shape of the block 11. As shown in FIG. The surface shape of the portion corresponding to the linear portion SL is a horizontal surface extending in the front-rear direction, that is, the circular curved surface of the front gradient in the convex 61 of the conventional block 51 shown in FIG. Is formed in the shape of a horizontal plane rather than another forward gradient.

Similarly, the recessed part 18 extends toward the opening of the recessed part from the inner end 18a of the recessed part 18 to the lower surface of the recessed part in the longitudinal cross-sectional shape of the block 11. It has recessed lower contour part 18c. The recessed lower contour part 18c is formed in the shape including the linear part SL extended horizontally toward the inner end 18a of the recessed part 18 in the front-back direction which is the depth direction of the recessed part 18, and have. In the recessed part 18, the linear part SL occupies most of the recessed lower contour part 18c in the longitudinal cross-sectional shape of the block 11. As shown in FIG. The inner surface shape of the portion corresponding to the linear portion SL is formed in a horizontal plane extending in the front-rear direction, that is, in a horizontal plane shape instead of the front gradient.

In addition, in the laying state of FIG. 4, the horizontal part of the linear part SL part which forms the horizontal surface shape of the convex part lower contour part 17c of the convex part 17, and the horizontal part of the recessed lower part contour part 18c of the recessed part 18 is shown. The linear part SL which forms a shape is formed so that it may be located in the same line at the position of the same height so that it may become a structure which is surface-contacted in the up-down direction.

In addition, a third feature will be described. The front side face 13 of the block main body 12 has an upper side face portion 13a positioned above the convex portion 17 in the front side face 13 and a lower side positioned below the convex portion 17. It has a side part 13b. The upper side part 13a is formed so that it may become the surface which retreated in the front-back direction which is the protrusion direction of the convex part 17 rather than the lower side part 13b. That is, in the laying state of FIG. 4, the gap 23 defining the joint width is defined between the upper side surface portion 13a of the front side surface 13 and the rear side surface 15 of the other block 11 adjacent in the front-rear direction. It is formed in the position which retracted from the lower side part 13b of the front side surface 13 by the distance which can be formed.

The upper edge part 21 is formed in the position where the front end side of the upper surface 20 of the block 11, and the upper end side of the front side surface 13 meet in a round shape. Moreover, the lower edge part 22 is formed in the position where the front end side of the bottom face 19 of the block 11, and the lower end side of the front side surface 13 meet in a round shape. In addition, the upper side part 13a of the front side surface 13 in this embodiment is the base end side and the front side surface 13 of the convex part upper contour part 17b of the convex part 17 in the upper edge part 21. As shown in FIG. ) Refers to the long side of the rectangular shape that extends to the position where it meets in a round shape (ア-ル 狀). In addition, the upper side part 13b of the front side surface 13 in this embodiment is the base end side and the front side surface 13 of the convex part lower contour part 17c of the convex part 17 in the lower edge part 22. As shown in FIG. ) Refers to the long side of the rectangular shape that extends to the position where it meets in a round shape (ア-ル 狀). And in this embodiment, as shown in FIG. 4, the length of the up-down direction of the upper side part 13a of the front side surface 13 is set smaller than the length of the up-down direction of the lower side part 13b.

Next, the operation of the block 11 configured as described above will be described below, noting the operation in the case of laying the block 11 in particular.

5A, 5B, and 6, the sand cushion layer 25 made of sand is sprayed on the subgrade 24 so as to have a predetermined thickness. A plurality of blocks 11 are sequentially placed on the sand cushion layer 25 in a series state in which convex portions 17 and concave portions 18 of adjacent blocks 11 are fitted. At the time of laying, first, as shown by a solid line in FIG. 5A, a block 11 (hereinafter referred to as an laying block) 11 to be laid from now on is retained. Specifically, the laying block 11 is located at a position above the surface of the sand cushion layer 25 at the rear of the block 11 having finished laying a plurality of blocks 11 in the series direction and above the surface of the sand cushion layer 25. The face 19 is kept in an inclined posture of deflection.

Subsequently, at the position indicated by the solid line in FIG. 5A (hereinafter referred to as the “installation initial position”), as shown by the dashed-dotted line in FIG. 5A, the laying block 11 is accompanied by a rotational displacement in the horizontal posture. In addition, the tip 17a of the convex portion 17 is moved to a position (hereinafter, referred to as a "position during installation") that is inserted from the inclined upper portion into the recessed portion 18 of the end block 11. The bottom surface 19 of the laying block 11 has not yet been in contact with the surface of the sand cushion layer 25 up to this point in time. That is, the laying block 11 is kept in an inclined posture, inclined slightly by a worker at a position slightly above the surface of the sand cushion layer 25 by the operator at a position during laying shown by the dashed-dotted line in FIG. 5A. do.

In addition, the laying block 11 reaches the position during laying by the movement accompanying the rotational displacement from the laying initial position. When inserting the convex portion 17 into the concave portion 18 of the opposite block 11, a precise positioning of the convex portion 17 in the left and right directions (width direction) with respect to the concave portion 18 is requested. It doesn't work. That is, both ends in the longitudinal direction of the concave portion 18 formed on the rear side surface 15 are formed as notches having a concave shape at the edge ends of the left and right side surfaces 14 and 16 of the block body 12. For this reason, the convex part 17 is inserted in the recessed part 18 without rigid alignment in the position in the middle of the laying shown by the dashed-dotted line in FIG. 5A. Thereafter, while the laying block 11 is displaced in the horizontal position, the convex portion 17 is adjusted in the width direction in the concave portion 18.

In addition, as shown in an enlarged view in FIG. 5B, when the laying block 11 moves from the initial laying position to the position during laying along with the rotational displacement, the upper edge portion 21, which is the corner portion of the front upper end thereof, is at the extreme end. It does not abut against the upper part of the back side 15 of the block 11. The laying block 11 moves from the laying initial position shown by the solid line in FIG. 5A to the position in the middle of laying shown by the dashed-dotted line in FIG. 5A. In this process, the laying block 11 is displaced from the inclined posture to the horizontal posture without colliding with the upper edge portion 21 with respect to the rear side 15 of the far side counterpart 11. Move while letting go.

 Here, in the laying block 11 of this embodiment, if the upper side part 13a of the front side surface 13 is not formed in the position which receded from the lower side part 13b, it is convex as shown in FIG. 5B. When the front end 17a of the part 17 is in the inclined posture which is inserted in the inclined upper part in the recessed part 18 of the last block 11, the upper edge 21 of the laying block 11 is carried out. Hits the last block 11. Therefore, there exists a possibility that at least one of the upper edge part 21 of the laying block 11 and the upper end part of the rear side surface 15 in the last block 11 may be damaged.

In contrast, in the case of the present embodiment, as shown in an enlarged manner in FIG. 5B, the upper side surface portion 13a of the front side surface 13 in the laying block 11 is formed at a position retreating from the lower side surface portion 13b. have. For this reason, in the laying block 11, the contact of the upper edge part 21 with respect to the counterpart block 11 is avoided in the movement process from the laying initial position shown to FIG. 5A to the position during laying. Therefore, in the laying block 11, the possibility of the defect by the collision with the other block 11 at the time of laying is reduced.

In addition, the laying block 11 is displaced horizontally from the posture in which the posture is inclined by the operator at the position during the laying in the dashed-dotted line shown in Fig. 5A. And when the attitude | position of the laying block 11 becomes a horizontal position, as shown in FIG. 6, while the bottom surface 19 of the laying block 11 comes into contact with the surface of the sand cushion layer 25 for the first time, The convex part 17 fits into the recessed part 18 of the last block 11. For this reason, the laying block 11 is in the laying completion state. And with this completion of laying, a gap 23 defining the joint width is formed between another block (the last block so far) 11 adjacent to the front side of the same block as this laying block 11. do.

That is, even if the joint width defining projection is not formed on the side surface of the block 11, the upper side portion 13a of the front side surface 13 is formed at a position where it is retracted from the lower side portion 13b. The space portion is used as the gap 23 defining the joint width. In addition, in the process of moving from the initial laying position shown in FIG. 5A to the position of the laying completion state shown in FIG. 6 through the position during laying, the laying block 11 floats on the surface of the sand cushion layer 25. It is moved to the up state. Therefore, the surface of the sand cushion layer 25 is not damaged by the contact of the block 11 at the time of laying the block 11.

And after laying as shown in FIG. 6, when a load is applied from the upper part to the joint of adjacent block 11 comrades, the lower part of the convex part in the convex part 17 and the recessed part 18 fitted together. The linear portions SL of the contour portion 17c and the recess lower contour portion 18c reliably absorb the load without relatively moving in the direction intersecting the load direction. Therefore, the planarity of the joints of the blocks 11 is maintained due to when a load is applied to the joints of the adjacent blocks 11.

According to the above embodiment, the following effects can be obtained.

(1) When laying the attachment block 11, the convex part 17 fits into the recessed part 18 of the other block 11 which adjoins. At this time, the laying block 11 is the bottom surface 19 in the state which floated on the surface of the sand cushion layer 25, without sliding sideways on the sand cushion layer 25 used as a laying surface. The movement is accompanied by the rotational displacement from the inclined posture of the forward deflection to the horizontal posture. As a result, even when the block 11 is placed on the sand cushion layer 25 made of sand, the bottom surface 19 is not brought into contact with the surface of the sand cushion layer 25 serving as the laying surface. In the movement form which gradually fits the convex part 17 into the recessed part 18, it becomes possible to move to the installation position adjacent to the other block 11. As shown in FIG. Therefore, when laying, since the surface state of the sand cushion layer 25 in which the surface was leveled is suppressed from being damaged, it is possible to enjoy excellent workability.

(2) In addition, an irregular load may be applied upward from the seams between the convex portions 17 and the concave portions 18 between the adjacent blocks 11 after laying. At this time, the surface where the convex part lower contour part 17c and the concave part lower contour part 18c of the convex part 17 and the recessed part which were mutually contacted contact each other reliably absorbs a load, without relative movement. . Thereby, the convex part 17 does not slide in the direction which causes the position of the block 11 to shift | deviate in the recessed part 18. FIG. Therefore, after laying of the block 11, the planarity of the seam of adjacent blocks 11 comrades can be kept favorable.

(3) In particular, the convex part lower contour part 17c of the convex part 17 and the concave part lower contour part 18c of the concave part 18 are horizontal as a part which the surface contacts in mutually up-down direction in a fitting state. It is a straight line part SL extended in the direction. Therefore, when an irregular load is applied upward from the seams between adjacent blocks 11 after laying, the convex portion 17 of one block 11 is applied to the recessed portion 18 of the other block 11. Is applied. The linear portion SL of the concave portion lower portion 18c which contacts the load with the linear portion SL of the convex portion lower portion 17c forms an interlocking structure extending in a horizontal direction perpendicular to the load direction. Absorb the load. Therefore, the lower convex part 17c of the convex part 17 and the lower part concave part 18c of the concave part 18 which receive a load also move relative to each other along the direction in which the linear part SL is extended. Therefore, after the block 11 is laid, the occurrence of positional shifts in which the planarity of the seams between adjacent blocks 11 may be broken can be suppressed.

(4) The joint width defining protrusion which is easy to be damaged at the time of construction which has been a problem in the past is not formed to protrude from the side of the block 11. Since the gap 23 which defines the joint width between adjacent blocks 11 at the time of laying is formed in the surface which retracted the upper side part 13a of the front side 13 from the lower side part 13b, Can be easily formed. Moreover, it is comprised so that the upper side part 13a of the front side surface 13 in the block 11 in which a posture may rotate rotationally at the time of laying may retreat rather than the lower side part 13b. Therefore, in the case of laying the block 11 to be placed in a moving form with the rotational displacement from the inclined posture to the horizontal posture, there is a fear that the upper edge portions 21 of the adjacent blocks 11 collide with each other and are missing. Can be reduced.

(5) The convex part 17 and the concave part 18 are formed so that it may extend along the longitudinal direction of the front side 13 and the back side 15 of an oblong long rectangle. Therefore, it is possible to absorb the irregular load applied from the joints of the adjacent blocks 11 to each other after installation in a relatively wide hydraulic pressure area, and to realize a stable interlocking structure.

(6) The recessed part 18 fitting with the convex part 17 is formed over the full length of the longitudinal direction of the back side 15 of the block main body 12. As shown in FIG. Therefore, when the convex part 17 of the laying block 11 is fitted to the recessed part 18 of the other block 11 which adjoins at the time of laying, the laying block 11 is the It is possible to insert the tip 17a of the convex portion 17 into the corresponding concave portion 18 without requiring exact alignment in the width direction perpendicular to the protruding direction and the depth direction of the concave portion 18. And it is possible to perform the position adjustment of the width direction also in the middle of the movement with rotational displacement of the laying block 11 in the insertion state. Therefore, the workability at the time of laying the block 11 can be further improved.

(Second Embodiment)

Next, 2nd Embodiment of this invention is described with reference to FIG. In addition, the other embodiment up to 6th embodiment described below including this 2nd Embodiment differs in some structures of the convex part 17 and the recessed part 18 in contrast with 1st Embodiment. And others are the same structure. Therefore, in description of each following embodiment, the component part different from 1st embodiment is mainly demonstrated, the same code | symbol is attached | subjected about another same structure, and the overlapping description is abbreviate | omitted.

Now, as shown in FIG. The block 11 of 2nd Embodiment has the lower convex part contoured part 17c of the convex part 17 formed in the front side surface 13, and the lower part of the concave part of the recessed part 18 formed in the back side 15. Since the outline part 18c is formed in the shape of the inclination surface of the front deflection in the front-back direction, these parts differ from 1st Embodiment formed in the horizontal surface shape along the front-back direction. However, the convex part lower contour part 17c of the convex part 17 and the concave part lower contour part 18c part of the concave part 18 in this 2nd Embodiment are also advanced, unlike the conventional block. In that it is formed in the shape which is not, these parts are the same as 1st Embodiment formed in the horizontal surface shape instead of being equally uplifted.

Therefore, also in this 2nd Embodiment, in particular, the convex part of the convex part 17 can enjoy the same effects as said (1), (2), (4)-(6) in 1st Embodiment. By forming the lower contour part 17c and the recessed lower part contour part 18c part of the recessed part in the shape of an inclination inclination surface, the following peculiar effects can be acquired.

(7) According to the structure of this 2nd Embodiment, when the load is applied from the upper part to the joint part of adjacent blocks 11 in the laying state where the convex part 17 was fitted to the recessed part 18, The convex portion lower concave portion 17c of the concave portion inclined surface shape in the convex portion 17 is recessed with respect to the concave portion concave lower contour portion 18c portion in the concave portion 18 in the concave portion. Taken as though. Therefore, for example, even if the vibration is applied simply by applying the load, the position shift in the direction in which the adjacent blocks 11 are separated can be suppressed by switching the force of the applied load to the holding force. .

(Third Embodiment)

Next, a third embodiment of the present invention will be described with reference to FIG. 8.

As shown in FIG. 8, the block 11 of 3rd Embodiment has the convex part upper contour part 17b of the convex part 17 formed in the front side surface 13, and the recessed part formed in the back side surface 15. As shown in FIG. The concave upper contour portion 18b of (18) is different from the first embodiment in which these portions are formed in a planar shape with an inclined shape in that they are formed in a convex curved shape of forward deflection in the front-rear direction. . However, the convex part upper contour part 17b of the convex part 17 and the concave part upper contour part 18b part of the concave part 18 in this 3rd Embodiment also advance in the front-back direction in a longitudinal cross-sectional shape. It is common in 1st Embodiment in that it is formed in sag shape.

Therefore, also in this 3rd Embodiment, the effect similar to said (1)-(6) in 1st Embodiment can be enjoyed.

(Fourth Embodiment)

Next, 4th Embodiment of this invention is described, referring FIG.

As shown in FIG. 9, the block 11 of 4th Embodiment has the convex part upper contour part 17b of the convex part 17 formed in the front side surface 13, and the recessed part formed in the back side surface 15. As shown in FIG. The concave upper contour portion 18b of 18 is formed in a concave curved shape of anterior deflection in the front-rear direction, and is different from the first embodiment in which these portions are formed in an inclined planar shape. . However, the convex part upper contour part 17b of the convex part 17 in this 3rd embodiment, and the concave part upper contour part 18b part of the concave part 18 also in the front-back direction in a longitudinal cross-sectional shape. It is common in 1st Embodiment in that it is formed in the shape of a leading-back.

For this reason, also in this 3rd Embodiment, while having the same effect as the said (1)-(6) in 1st Embodiment, especially the convex part upper outline part 17b of the convex part 17. By forming the concave upper contour portion 18b of the concave portion 18 into a concave curved surface shape that is sagging, the following peculiar effects can be obtained.

(8) According to the structure of this 4th Embodiment, when the laying block 11 is rotated from the inclined posture to the horizontal posture at the position during the laying midline shown by the dashed-dotted line in FIG. The convex part upper contour part 17b part and the concave part upper part contour part 18b part which form a shape can function as a guide part which guides a counterpart side to a rotation direction.

(Fifth Embodiment)

Next, 5th Embodiment of this invention is described, referring FIG.

As shown in FIG. 10, the block 11 of 5th Embodiment has the convex part 17 and the recessed part 18 in the front side 13 and the back side 15, respectively, two (that is, multiple). It differs from the 1st Embodiment in which these are formed only in the front side 13 and the back side 15 one by one. However, the convex part 17 and the concave part 18 in this 5th Embodiment also have the convex part upper contour part 17b or the concave upper part outline part of the shape which falls in the front-back direction in the longitudinal cross-sectional shape. It is common to 1st Embodiment in the point which has 18b and the convex part lower contour part 17c, the recessed part lower contour part 18c, etc. which are not a front lifting shape.

Therefore, also in this 5th embodiment, although the effect similar to said (1)-(6) in 1st embodiment can be enjoyed, especially the convex part 17 and the recessed part 18 are not one, but two. By forming a plurality (plural), the following specific effects can be obtained.

According to the structure of this 5th Embodiment, among the convex part 17 and the recessed part 18 formed by two (plural), one convex part 17 or the recessed part 18 falls apart. In this case, an appropriate fitting shape can be ensured by the remaining undefected convex portions 17 and the concave portions 18.

(Sixth Embodiment)

Next, a sixth embodiment of the present invention will be described with reference to FIGS. 11A and 11B.

As shown in FIGS. 11A and 11B, the block 11 of the sixth embodiment is formed such that the convex portion 17 extends along the longitudinal direction of the front side surface 13. The convex part 17 differs from 1st Embodiment in which the convex part 17 was formed over the full length of the front side surface 13 in that it is formed shorter than the full length. In addition, like the case of 1st Embodiment, the recessed part 18 is formed so that it may extend over the full length of the back side surface 15 longitudinal direction. Also, since the upper side surface portion 13a and the lower side surface portion 13b lower than the convex portion 17 are formed in the same vertical plane than the convex portion 17 on the front side surface 13, The block 11 of 6th embodiment differs from 1st Embodiment formed in the position which the upper side part 13a retreated from the lower side part 13b. However, the convex portion 17 and the concave portion 18 in the sixth embodiment also have the convex portion upper contour portion 17b and the concave portion upper contour portion 18b having the shape of deflecting forward and backward in the longitudinal cross-sectional shape. ) And a concave lower contour 17c, a concave lower contour 18c, and the like having a shape other than the front edge, are common to the first embodiment.

Therefore, also in this 6th Embodiment, although it can enjoy the same effects as said (1)-(3), (5), (6) except the said (4) in 1st Embodiment, especially convex By forming the portion 17 shorter than the entire length of the front side surface 13, the following unique effects can be obtained.

According to the structure of this 6th embodiment, since the edge part of the longitudinal direction of the convex part 17 is set as the structure which is not exposed on the left and right side surfaces 14 and 16 of the block main body 12, It is possible to reduce the risk that the convex portion 17 may be missing due to collision with another block 11 adjacent to each other in the horizontal direction.

In addition, each said embodiment may be changed as follows.

In each of the above embodiments, the blocks 11 which fit the convex portion 17 and the concave portion 18 so as to be adjacent to each other at the time of laying are arranged in the longitudinal direction (front and rear direction), the width direction (left and right directions) and the thickness direction ( At least one of the sizes in the vertical direction may be different from each other. For example, the length of the other block 11 may be 1/2 with respect to one block 11, and the thickness of the other block 11 may be 3/4.

In each of the above embodiments, the planar shape of the block main body 12 in the block 11 is formed with a convex portion 17 formed at the front side and a concave portion 18 fitted thereto at the rear side. If it is, the shape which includes a curved part in polygonal form, such as a hexagon and an octagon, or at least one part of an outline other than a square may be sufficient.

In each of the above embodiments, the grooves 20a may be formed in the left and right directions and in the front and rear directions on the upper surface 20 of the block main body 12 in the block 11. Alternatively, the upper surface 20 may be a planar shape in which the grooves 20a are not formed.

In each of the above embodiments, a plurality of convex portions 17 may be formed at intervals along the longitudinal direction of the front side surface 13.

In the first to fifth embodiments, the distance at which the upper side portion 13a of the front side surface 13 of the block body 12 retreats from the lower side portion 13b in the block 11 is the joint width. The retraction distance may be changed to correspond to the size of the gap 23 to be prescribed.

In the first to fifth embodiments, the front side surface 13 of the block body 12 in the block 11 is the upper side surface portion 13a and the convex portion 17 that are higher than the convex portion 17. ), The lower side surface portion 13b may be formed in the same vertical plane.

Claims (6)

A block having a convex portion formed on the front side and a rear side opposite to the front side, the block having a shape corresponding to the convex portion,
In the cross-sectional shape at the time of cut | disconnecting the block in the perpendicular | vertical plane along the protruding direction of the said convex part, and the depth direction of the said recessed part in the state which the bottom surface of the said block faced down,
The convex portion
A convex upper contour portion extending from the distal end of the convex portion toward the base end of the convex portion on an upper surface of the convex portion; And
In the lower surface of the said convex part, it has a convex part lower contour extended from the front-end | tip of the said convex part toward the base end of the said convex part,
The concave portion,
An upper surface of the recess, the recess upper contour extending from an inner end of the recess toward the opening of the recess; And
In the lower surface of the said recessed part, it has a recessed lower part contour part extended from the inner end of the said recessed part toward the opening of the said recessed part,
The upper convex portion and the upper concave portion of the convex portion are formed in the shape of a deflection toward the leading end of the convex portion and the inner end of the concave portion in the protruding direction of the convex portion and the depth direction of the concave portion,
The convex lower contour portion and the concave lower contour portion are formed in the shape of the convex portion in the protruding direction and the depth direction of the concave portion in a shape that does not lag toward the leading end of the convex portion and the inner end of the concave portion. Block to be done. The method of claim 1,
The convex lower contour of the convex portion and the concave lower contour of the concave portion are formed in a shape including straight portions positioned on the same line at positions of the same height along the protruding direction of the convex portion and the depth direction of the concave portion. Block characterized in that. The method according to claim 1 or 2,
With the bottom face of the block down, the front side is
An upper side surface portion located above the convex portion; And
It includes a lower side portion located below the convex portion,
The said upper side part is formed in the position which receded from the said lower side part in the protrusion direction of the said convex part. The method of claim 3,
An upper edge portion formed at a position where the front side and the upper surface of the block meet; And
Has a lower edge formed at the position where the front side and the bottom surface of the block,
The upper side portion extends from the upper edge portion to a position where the convex portion upper contour portion and the front side portion of the convex portion meet,
And the lower side portion extends from the lower edge portion to a position where the convex lower contour portion and the front side face of the convex portion meet. The method according to claim 1 or 2,
It includes a block body in the shape of a plate,
The said convex part is formed in the said front side surface in the said block main body so that it may extend along the longitudinal direction of the said front side surface, The said recessed part may extend the longitudinal direction of the said back side surface to the said back side surface in the said block main body. Block is formed so as to extend along. The method of claim 5,
The said recessed part is formed over the full length of the longitudinal direction of the said back side surface, The block characterized by the above-mentioned.

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