JPH068403U - Natural stone paving stones - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention provides a natural stone pavement that can be easily laid on a road surface and at a low cost. [Structure] A plurality of grooves extending toward the other side are formed on each of at least two sides on the back surface of a paving stone having a quadrilateral cross section, and an L-shaped spacer is provided in the groove, and one side of the spacer is provided. A natural stone paving stone characterized in that the part is fitted so as to protrude from the groove, and the other side is attached to the paving stone so as to be in close contact with the side wall of the paving stone. [Effect] The base layer is formed by the dry method, and the simple construction in which the joint interval can be easily set only by arranging paving stones is possible.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a paving stone made of natural stone to be laid for paving a roadway, a sidewalk or other space.

[0002]

[Prior art]

 Conventionally, various methods have been used to pave roads and the like using natural stone. For example, as shown in FIGS. 7 (a) and 7 (b), cubic crushed stones a may be arranged in a fan shape, or as shown in FIGS. 8 (a) and 8 (b), irregular polygonal stone blocks b may be patched. Is well known. These are constructed by forming a crushed stone roadbed 1 on the roadbed as shown in Fig. 9, striking a concrete layer 2 on top of it, laying a leveling mortar 3 and laying paving stones 4 and finally making 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.

Recently, many proposals have been made to improve the efficiency of laying paving stone blocks. For example, in Japanese Utility Model Laid-Open No. 50-89123, two or more mountain-shaped irregularities are formed on both long side surfaces of a block to facilitate fitting with adjacent blocks for better workability. Moreover, in Japanese Utility Model Laid-Open No. 1-124804, an opening communicating with the internal cavity is provided on one side surface of the paving stone, and a protrusion fitting to the opening is provided on the other side surface of the paving stone to connect the paving stones to each other. A facilitating structure is disclosed. 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 device]

 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, the construction is required to be simple. 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 thereof is to provide a natural stone pavement that can be easily laid on a road surface and that is low in cost.

[0005]

[Means for Solving the Problems]

 To achieve the above object, the present invention forms a plurality of grooves extending toward the other side on at least two sides of a paving stone having a quadrilateral shape, and forms an L-shaped spacer in the groove. The natural stone pavement is characterized in that one side of the spacer is fitted therein so that a part of the spacer protrudes from the groove, and the other side is attached to the cobblestone so as to be in close contact with the side wall of the cobblestone.

The present invention will be described in detail below with reference to the embodiments shown in the drawings. FIG. 1 is a perspective view of a rectangular parallelepiped paving stone 6 in which the six sides of the present invention have a rectangular shape, and its back surface 7 is shown as an upper side. 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 a corrosion resistance, for example, a synthetic resin such as vinyl, and has a square (a) or circular (b) cross section (but not limited to this). It is preferable that the thickness (or diameter) of the groove 8 is 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 into the groove 8 on the back surface of the paving stone, and the groove 8 is fitted with a part of the inner side of the piece 9 a of the L-shaped spacer 9. In this case, a part of the outer side 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, the L-shaped spacer 9 is pressed into the groove 8 to be pressed and fixed to the rigid. Therefore, it does not fall off from the paving stones, but 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 stones, 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. The length of the spacer is not particularly limited, but 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. To do.

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, when the paving stone 6 is laid as shown in FIG. 5 and FIG. In order that the other side 9b of the spacer 9 maintains the same spacing s between the adjacent paving stones 6, they may be simply arranged, and the rear surface 7 of the paving stone has one side of the L-shaped spacer 9 protruding 9a '. Therefore, the underlayer 10 is bitten and fixed, and does not move even if a load is applied.

As shown in FIG. 9, the laying foundation is such that concrete is cast on the roadbed, on which sand mixed with cement is evenly leveled, or an underlayer 10 sprinkled with a small amount of water is applied. It can be constructed by the dry method. The paving stones 6 are sequentially placed in parallel on the base layer 10 with the spacers 9 providing the joint spacing s 1, and the paving stones 6 are respectively compressed to give a predetermined level. After that, the space s is filled with sand or sand mixed with cement for joint filling, and further water is appropriately sprinkled to solidify the joint.

[0011]

[Effect of device]

 As described above, since the present invention forms natural stone into a rectangular paving stone that is easy to process and attaches spacers to at least two side surfaces and a bottom surface of the paving stone, the present invention is carried out for conventional joint finding. There is no need for tensioning with a thread, and by simply arranging the paving stones in order to keep the joint spacing of the paving stones laid by the spacer constant, it is possible to achieve a paving stone arrangement with a predetermined joint spacing. In addition, since the natural pavement itself has a considerable weight, once it is laid it will not sink or collapse.However, even if there is an abnormal load, one side of the spacer protrudes from the back of the pavement. , It does not move by acting as a wedge by digging into the underlayer, which 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, 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 pebbles having a quadrilateral shape, 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.