JPH0712501U - 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 natural stone characterized in that a non-slip member having irregularities on its surface is locked and fixed to the back surface of a quadrilateral cobblestone, and one or a plurality of spacers are projected on two adjacent side surfaces. Paving stones. [Effect] The base layer is formed by the dry method, and simple construction that allows easy setting of joint spacing by lining the paving stones is possible. Even if an abnormal load is applied, the anti-slip member bites into the base layer. It plays the role of a wedge and does not move or move, and secures the paving stones sufficiently.

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. 9 (a) and 9 (b), cubic crushed stones a may be arranged in a fan shape, or as shown in FIGS. 10 (a) and 10 (b), irregular polygonal stone blocks b may be patched. The method of laying like In these products, as shown in Fig. 11, crushed stone roadbed 1 is formed on the roadbed, concrete layer 2 is struck on it, and leveling mortar 3 is laid and paving stones 4 are laid, and finally joints 5 are applied. Although it is constructed, it requires a great deal of skill and considerable time to set the level of paving stones, set the level, and form joint intervals, so even a person with considerable experience can lay less area per hour. , Efficient construction is desired.

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 so that it can be easily processed. Moreover, since the weight of each paving stone is large, it is necessary to simplify the construction when laying. Furthermore, it is a current requirement that even a non-expert called mason can easily perform the laying work. The present invention satisfies these needs, and by simply placing them side by side on the road surface, flat and uniform joint intervals are formed, and it is possible to perform simple laying without deviation and at low cost. The purpose is to provide natural cobblestones.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention has a non-slip member having unevenness provided on the back surface of a paving stone having a quadrilateral shape, and one or a plurality of spacers on two side surfaces of the paving stone. It is a natural stone paving stone that is characterized by protruding.

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 of the present invention, with its back surface 6c facing upward. That is, spacers 7 are provided on the side surfaces 6a and 6b of the paving stone 6 which are adjacent to each other, and a non-slip member 8 is provided on the back surface 6c. One or a plurality of spacers 7 are provided on each side surface. In the example shown in the figure, one is installed on one short side surface 6a and two are installed on one long side surface 6b. It does not have to be normally provided on the other side surface. The fixing means may be a method in which a paving stone is provided with a hole for fitting, or a commonly used method such as bonding, and is not particularly limited as long as the spacer 7 maintains the joint space and does not separate during use.

2 to 6 show various examples of the anti-slip member 8 used in the present invention. In each drawing, 9 is an embedding part, 10 is its front surface, 11 is its back surface, and 12 is a locking piece integrally provided on the back surface 11 of the embedding part 9, which imparts flexibility. Thus, it is preferable to provide the split groove 12a at the center thereof. FIG. 2 shows a racetrack type of the embedded portion 9, where (a) shows the upper surface (front surface) 10, (b) shows the front surface, and (c) shows the lower surface (back surface) 11. At 0, pyramid-shaped irregularities 13a are engraved in a grid pattern. 3A and 3B show a disc-shaped embedding portion 9, where FIG. 3A shows an upper surface (front surface) 10 and FIG. 3B shows a front surface. On the surface 10, as in FIG. Is engraved. Similar to FIG. 1, FIG. 4 shows a racetrack-shaped embedded portion 9, in which (a) shows an upper surface (front surface) 10, (b) shows a front surface, and (c) shows a side surface. In this example, the concavo-convex carved on the surface 10 is a protrusion 13c having a mountain-shaped cross section as shown in FIG. 7C, and the protrusion 13a is continuously formed in the longitudinal direction of the member 8 with a plurality of intervals. They are set up close to each other.

FIG. 5 shows a racetrack-type non-slip member 8 of another embodiment, in which a fitting groove 14 is formed in the surface 10 and a protruding rod 15 having elasticity such as rubber or plastic is fitted into the groove 14. A part of it projects from the surface 10. In the drawing, (a) shows a plane, (b) shows a side surface, and the case where one elastic rod 15 is shown is shown, but it is needless to say that a plurality of elastic rods 15 may be installed. FIG. 6 shows a structure in which a plurality of projecting pieces 16 are planted around the surface 10 of the disk-shaped embedding part 9 and in the center part thereof, and the structure is such that the effect of embedding in the ground can be increased. The figure (a) shows a plane (front surface), the figure (b) shows the front, and the figure (c) shows the cc cross section of the figure (a).

As described above, the anti-slip member 8 used in the present invention has various shapes and surface irregularities, but the present invention is not limited to the above examples, and other shapes such as a polygonal shape, a flower shape, and a ring. The shape may be a shape, etc., and it suffices if these shapes are provided with irregularities that help prevent slipping. Since this non-slip member 8 is embedded in sand, it is preferable to mold it with a hard material having corrosion resistance, for example, a hard synthetic resin such as vinyl.

FIG. 7 is a cross-sectional explanatory view showing a state in which the anti-slip member 8 is fixed to the paving stone 6. That is, a hole 6d is provided on the back side 6c of the paving stone 6, and the slip stopper 8 can be fixed by inserting the locking piece 12 into the hole 6d. Since the groove 12a is formed in the locking piece 12, the locking piece 12 has flexibility and can be easily inserted into the hole 6d with a slight pushing force. At this time, by making the diameter of the locking piece 12 slightly larger than the diameter of the hole 6d, that is, by press-fitting the locking piece 12, the close contact with the surface of the hole 6d becomes more tight, and it becomes stronger. It can be fixed easily. In addition, it is also possible to apply an adhesive to the surface of the locking piece 12 or the hole 6d to adhere them.

As described above, according to the present invention, since the spacer 7 is fixed to the natural stone paving stone 6, when the paving stone 6 is laid, the space between the paving stone 6 where the spacer 7 is adjacent (joint joint) is set. ) Keep s equal. Therefore, simply arranging them allows you to lay them out in orderly manner. Further, since the anti-slip member 8 projects from the back surface 7 of the paving stone 6, as shown in FIG. 7, the embedding portion 9 is embedded in the ground paving sand layer (sand cushion) 17 and the uneven portion formed on the front surface is formed. Furthermore, it is possible to cut into the ground laying sand layer 17 to strengthen the fixing at the laying position and prevent the displacement or the movement even when a load is applied.

When laying paving stones, concrete can be cast on the roadbed, sand mixed with cement can be leveled evenly, or a base layer 17 with a small amount of water sprinkled on it can be applied by a dry method. The paving stones 6 are sequentially laid on the base layer 17 in parallel while the joint spacing is provided by the spacer 7, 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 to perform joint filling, and further water is appropriately sprinkled to solidify the joint. It should be noted that the natural stone paving stone of the present invention can have a slip-preventing effect if minute irregularities are formed on a part or all of the surface thereof by using a jet burner or the like.

[0013]

[Effect of device]

 As described above, according to the present invention, the natural stone is formed into a rectangular paving stone that can be easily processed, and the spacers are attached to at least two side surfaces of the paving stone. It is possible to achieve a paving stone arrangement with a predetermined joint spacing by simply lining the paving stones in order to keep the joint spacing of the paving stones laid by the spacers constant without the need for tensioning. In addition, the natural pavement itself has a considerable weight, and once it is laid, it does not normally sink or collapse, but even if abnormal load is applied, the anti-slip member is made to protrude from the back surface of the pavement and the surface Since the unevenness is formed on the underside, it does not bite into the underlying layer and acts as a wedge, causing no displacement or movement, which secures the fixing of the paving stone. Furthermore, the base 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 an example of paving stones used in the present invention with the back surface facing up.

2A and 2B are examples of an anti-slip member used in the present invention, in which FIG. 2A is a top view, FIG. 2B is a front view, and FIG. 2C is a bottom view.

3A and 3B are other examples of the non-slip member used in the present invention, in which FIG. 3A is a top view and FIG. 3B is a front view.

4A and 4B are another example of a non-slip member used in the present invention, in which FIG. 4A is a top view, FIG. 4B is a front view, and FIG. 4C is a side view.

5A and 5B are still another example of the non-slip member used in the present invention, where FIG. 5A is a top view and FIG. 5B is a side view.

6A and 6B are still another example of the non-slip member used in the present invention, in which FIG. 6A is a top view, FIG. 6B is a front view, and FIG.
Shows a sectional view taken along line c-c in FIG.

FIG. 7 is an explanatory cross-sectional view showing a usage state of the antiskid member of the present invention.

FIG. 8 is a company perspective view showing a laying example of the present invention.

9A and 9B are explanatory views showing a conventional paving stone and an arrangement example.

10A and 10B are explanatory views showing another conventional paving stone and an arrangement example.

FIG. 11 is a cross-sectional explanatory view showing an example of laying conventional natural paving stones.

[Explanation of symbols]

 6: Paving stones 6a, 6b: Side surface 6c: Back surface 6d: Hole 7: Spacer 8: Anti-slip member 9: Embedded portion 10: Surface 11: Back surface 12: Locking piece 12a: Split groove 13: Concavity 14: Fitting groove 15 : Protruding bar 16: protruding piece 17: base layer

Claims (1)

[Scope of utility model registration request] 1. A non-slip member having irregularities on its surface is locked and fixed to the back surface of a quadrilateral pavement stone, and one or a plurality of spacers are projected on two side surfaces of the pavement stone. Natural stone paving stones.