JPH078561Y2 - Natural stone paving stones - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paving stone made of natural stone that is laid for paving a road, a sidewalk, or other space.

[0002]

2. Description of the Related Art Conventionally, various methods have been used to pave roads and the like using natural stone. For example, in FIG.
As shown in (a) and (b), cubic crushed stones a are arranged in a fan shape, and as shown in FIGS. 8 (a) and 8 (b), irregular polygonal stone blocks b are laid like patching. The method is well known. These are constructed by forming a crushed stone roadbed 1 on a roadbed as shown in FIG. 9, striking a concrete layer 2 on it, laying a leveling mortar 3 and laying a paving stone 4, and finally applying joints 5. However, it takes a lot of time and effort to arrange the cobblestones, set the level, and form the joint space, and it is difficult for even those who have considerable experience to construct efficiently.

Many proposals have recently been made to improve the efficiency of laying paving stone blocks. For example, the actual exploitation 50-
In Japanese Patent No. 89123, two or more chevron-shaped irregularities are formed on both long side surfaces of the block to facilitate fitting with adjacent blocks to improve workability. In addition, the actual Kaihei 1-124804
The publication discloses a structure in which an opening communicating with the internal cavity is provided on one side surface of the paving stone, and a projection which fits into the opening is provided on the other side surface of the paving stone to facilitate connection between the paving stones. There is. However, when these paving stones are made of natural stone, the processing is extremely difficult and the manufacturing cost is extremely high.

[0004]

[Problems to be Solved by the Invention] Natural stone used for paving stones is required to have high hardness. Therefore, it is desirable to make the shape as simple as possible for easy processing. Moreover, since one piece is heavy, simple construction is required. Furthermore, it is a current requirement that even non-experts called masons can easily perform the laying work. The present invention satisfies these needs, and an object of the present invention is to provide a natural stone pavement that can be easily laid on a road surface and that is low in cost.

[0005]

In order to achieve the above object, the present invention forms a plurality of grooves on at least two sides of a paving stone having a quadrilateral shape, each groove extending toward the other side, A natural stone paving stone, characterized in that an L-shaped spacer is fitted in the groove so that one side of the spacer protrudes from the groove and the other side is attached to the paving stone so as to closely contact the side wall of the paving stone. Is.

The present invention will be described below in detail with reference to the embodiments shown in the drawings. FIG. 1 is a perspective view of a rectangular parallelepiped paving stone 6 having a six-sided rectangular shape according to the present invention, with its back surface 7 facing upward. That is, on the back surface 7 of the paving stone 6, at least two adjacent sides 7a and 7b are provided with a groove 8 extending toward the other opposing side. The groove 8 in the figure is formed in a part of the back surface, but it may be a continuous groove penetrating the other side. Further, the number of grooves provided on one side varies depending on the length of the side, but it is preferable that the number is two or more.

2A and 2B show a spacer 9 used in the present invention, which is formed in an L shape (hereinafter referred to as an L shape). The L-shaped spacer is formed of a material having corrosion resistance, for example, a synthetic resin such as vinyl so that the cross section has a square shape (a) or a circular shape (b) (but is not limited to this). And its thickness (or diameter)
Is preferably slightly larger than the width of the groove 8.

FIG. 3 is an enlarged explanatory view showing a state in which the L-shaped spacer 9 is fitted in the groove 8 on the back surface of the paving stone. The inside of a piece 9a of the L-shaped spacer 9 is fitted in the groove 8. Then
A part of the outside is formed as a protruding portion 9a 'protruding from the back surface 7. The other piece 9b of the L-shaped spacer 9 is closely attached to the side surface 6a of the paving stone 6. At this time, since the width (w) of the piece 9a of the L-shaped spacer 9 is slightly larger than the width of the groove 8, it is pressed into the groove 8 to be pressed and fixed to the rigid. Therefore, although it does not fall off from the paving stones, an adhesive may be used to further strengthen the fixation. Further, the L-shaped spacers 9 may be provided on the two adjacent side faces of the paving stone, and the spacers 9 of the adjacent paving stones are set on the other two side faces, so that the attachment thereof may be substantially unnecessary. And this attachment can be easily performed on-site. Although the length of the spacer is not particularly limited, the length (l) of the other side 9b may be equal to or less than the surface level of the side wall of the paving stone, and its width (h) or diameter is appropriately selected according to the joint interval to be set.

As described above, according to the present invention, since the L-shaped spacer 9 is fixed to the natural stone paving stone 6 as shown in FIG. 4, the L-shaped spacer 9 is used for laying the paving stone 6 as shown in FIGS. 5 and 6. In order that the other side 9b of the spacer 9 keeps the distance s between the paving stones 6 adjacent to each other equally, they may be simply arranged,
Also, on the back surface 7 of the paving stone, one side of the L-shaped spacer 9 projects 9
Since it is a ', it is bitten and fixed in the underlayer 10,
It does not move even if a load is applied.

As shown in FIG. 9, the laying foundation is such that concrete is poured on the roadbed, and sand mixed with cement is leveled evenly, or a base layer 10 in which a small amount of water is sprinkled is placed thereon. It can be constructed by the dry method. On this underlayer 10, the spacers 9 are provided with the joint spacing s to sequentially set the paving stones 6.
Are placed in parallel and laid, and each of the paving stones 6 is rolled to obtain a predetermined level. Then, the space s is filled with sand or sand mixed with cement to perform joint filling, and further water is appropriately sprayed to solidify the joint.

[0011]

As described above, according to the present invention, since natural stone is molded into a rectangular paving stone that can be easily processed, and spacers are attached to at least two side surfaces and a bottom surface of the paving stone, the conventional jointing is performed. There is no need to carry out tensioning with a thread, and the spacers can be arranged simply by lining the paving stones in order to keep the joint spacing of the paving stones laid constant. You can Also,
The natural pavement itself has a considerable weight, and once it is laid, it does not sink or collapse, but even if abnormal weight is added, one side of the spacer is projected from the backside of the pavement, so the underlayer It does not move by acting as a wedge by digging into the ground, and secures the fixing of the paving stones. Furthermore, the foundation layer can be dry-processed, and if the natural paving stone of the present invention is used, the laying work can be performed very easily regardless of the skill of the site technology.

[Brief description of drawings]

FIG. 1 is a perspective view showing a back surface of a paving stone used in the present invention.

2A is a perspective view showing an example of an L-shaped spacer used in the present invention, and FIG. 2B is a perspective view showing another example thereof.

FIG. 3 is an enlarged explanatory view of a main part of FIG. 1.

FIG. 4 is a perspective view showing an embodiment of the paving stone of the present invention.

FIG. 5 is an explanatory sectional view showing an example of laying a paving stone of the present invention.

FIG. 6 is an explanatory view showing a laying mode of the paving stone of the present invention.

7A and 7B are explanatory views showing a conventional paving stone and an arrangement example.

8A and 8B are explanatory views showing another conventional paving stone and an arrangement example.

FIG. 9 is an explanatory cross-sectional view showing an example of laying conventional natural paving stones.

[Explanation of symbols]

 6: Paving stone 7: Back surface 7a, 7b: Side 8: Groove 9: L-shaped spacer 9a: One side 9a ': Projection 9b: Other side 10: Underlayer

Claims (1)

[Scope of utility model registration request] 1. A plurality of grooves extending toward the other side are formed on each of at least two sides of the back surface of a quadrilateral pavement, and an L-shaped spacer is provided in the groove, and one side of the spacer is formed. A natural stone pavement that is fitted so that part of it protrudes from the groove and that is attached to the pavement so that the other side is in close contact with the pavement sidewall.