EP0805236A1 - Paving block with local rain water removal - Google Patents

Abstract

The paving stone on its underside has at least one channel-shaped recess extending between the two spacers from one side face to the opposite side face. The spacers (4,5) are formed mirror image symmetrically in relation to a side face parallel centre plane by two oppositely disposed side faces. The front abutting faces of the spacers of two opposite side faces are displaced in the side face parallel direction in relation to the front abutting faces of the spacer of the other two opposite side faces.

Description

The present invention relates to a paving stone for insertion into a paving stone association with lateral spacers with abutting surfaces for form-fitting attachment to the abutting surfaces of the lateral spacers of a neighboring stone, each side surface of the paving stone having two spacers, each of which has two abutting surfaces offset in a direction perpendicular to the side surface , and wherein the front abutment surface of a spacer can be attached to the rear abutment surface of the spacer of a neighboring stone by interlocking the spacers.

A paving stone of the type described above is known from DE 44 05 616 A1. In this known stone, the individual side surfaces have spacers which have stair-shaped or stepped abutment surfaces for form-fitting attachment to a complementary abutment surface of a spacer of a neighboring stone. The abutment surface of each spacer consequently has a spatial structure which is used for interlocking with the complementary abutment surface of a spacer of a neighboring stone, the abutment surfaces being graded on a paving stone in the same direction. Paving stones designed in this way are firmly anchored in a paving stone structure due to the interlocking interlocking of the spacers, also with regard to lateral displacements. The stability and thus the The resilience of a paving stone assembly composed of such stones is hereby significantly increased. In addition, with such a stone shape, the advantages of using spacers are preserved, ie the sinking of water through the existing joints is guaranteed at all times with uniform joint widths. The joint between the paving stones can continue to be made decorative in almost any way according to the intended use.

The invention has for its object to provide a paving stone of the type described that enables a particularly rapid localized rainwater drainage while achieving a firm association.

This object is achieved according to the invention with a paving stone of the type described in the introduction in that it has at least one channel-shaped depression extending from one side surface to the opposite side surface between the two spacers on its underside and in that the spacers each have two opposite side surfaces with respect to one side surface parallel central plane are mirror-symmetrical, the front abutment surfaces of the spacers from two opposite side surfaces in the side surface parallel direction offset to the front abutment surfaces of the spacers of the other two opposite side surfaces are arranged such that a positive attachment of the front abutment surfaces to the rear abutment surfaces of the spacers of a neighboring stone by interlocking them is only possible after rotating a stone by 90 ° relative to the other stone.

The paving stone designed according to the invention is characterized on the one hand in that it is on its underside has at least one recess which extends from one side surface to the opposite side surface between the two spacers. This at least one depression creates a connection between two opposite joints on the underside of the paving stone, so that the rainwater penetrating into the fingers can spread over the at least one depression under the stone. Thus, the area available for percolation is increased by the at least one recess provided on the underside of the stone. Since the recess is connected to both opposite joints, it is accessible to the rainwater even if one of the two fingers is blocked and should prevent the rainwater from seeping away.

A crucial feature of the invention is that when several recesses are arranged, they always run in the same direction. In other words, an arrangement of depressions which are arranged at an angle of 90 ° to one another is excluded according to the invention. If several recesses are provided between the spacers, they run parallel to one another from the same side surface to the same side surface.

Another feature of the invention is that the spacers of two opposite side faces are designed with mirror symmetry with respect to a central plane parallel to the side faces. In addition, the front abutment surfaces of the spacers are arranged offset from the two opposite side surfaces in the direction parallel to the side surfaces to the front abutment surfaces of the spacers of the other two opposite side surfaces. As a result, a positive attachment of the front abutting surfaces to the rear abutment surfaces of the spacers of a neighboring stone with interlocking of the same only possible after rotating one stone by 90 ° relative to the other stone. This measure ensures that the depressions provided on the undersides of the paving stones change their direction from stone to stone, that is to say are arranged offset from one another by 90 °. In the installed bandage, there are never depressions running through several stones in the same direction. This offset of the depressions from stone to stone prevents the rainwater seeping through the joints from forming a preferred direction of flow below the stones and thus possibly washing the stones. Rather, it is achieved that the water seeps into the ground in a locally restricted manner in the area of the joints surrounding a stone or the at least one recess provided on the underside of the stone. This ensures uniform rainwater drainage across the entire paving stone structure. On the other hand, the at least one depression on the underside increases the available infiltration area.

Due to the special design and arrangement of the spacers, the paving stones according to the invention can only be laid in an association if adjacent stones are arranged offset from one another by 90 °. Only then do the two abutting surfaces of each spacer form-fit against the complementary abutting surfaces of the spacer of the adjacent stone. Due to the step-like offset of the abutting surfaces, real all-round gearing is achieved, ie it is impossible to move two adjacent stones. A particularly firm and stable bond is achieved in spite of maintaining relatively wide joints for rainwater drainage. These joints can be decoratively designed in any way should, however, allow the water to seep away in any case. For example, the joints can be filled with grit (grain size 1-3 mm) or sand (grain size 0-2 mm). An at least partial backfilling with mother earth is used when lawn is to grow in the joint area. Particularly good drainage is achieved if at least part of the joint area is filled with coarse chippings (grain size 2-5 mm) and then filled with fine chippings (grain size 1-3 mm).

In a development of the paving stone according to the invention, the step-like offset abutting surfaces of a spacer are connected to one another via an inclined surface. This makes it easier to join the stones together. Furthermore, the stones do not have to be made as precisely as in the case of a step-like transition from the front to the rear abutment surface, since the inclined surface serves as a sliding surface along which the stones can be pushed against one another.

Further preferred embodiments of the invention are characterized in that the spacers pass over an inclined surface into the central side surface area and that the spacers pass over an inclined surface into the outer side surface regions. This also avoids sharp corners and edges.

A particularly preferred embodiment of the invention is characterized in that the paving stone is chamfered between its top surface and its side surfaces. It preferably has an all-round chamfer. The chamfer preferably runs continuously from the top surface of the stone to the top of the spacers, so that a uniform bevel is formed. At In this preferred embodiment, a chamfer is also present in the areas in which there are no spacers. This ensures a uniform overall picture of the stone and encourages the drainage of rainwater into the joints. However, the invention does not exclude that such a chamfer is only present in partial areas, for example only in the area of the spacers.

With regard to the arrangement of the at least one groove-shaped recess on the underside of the paving stone, two groove-shaped recesses running parallel to one another are preferably provided. These depressions run from one side surface of the stone to the opposite side surface thereof and are arranged between the spacers of the opposite side surfaces. As already mentioned at the beginning, recesses of this type are always provided only in one direction in the paving stone according to the invention, in order to prevent recesses of the same direction from extending over a number of adjacent stones and thus specifying preferred flow directions for the leachate. The height of the depressions is relatively small compared to the total thickness of the stone. In cross section, the recess is preferably semicircular.

After the laying of a bandage made of the paving stones designed according to the invention, the spacers of adjacent stones which form-fittingly abut one another each delimit a central joint area which is almost closed off by the spacers. Furthermore, an outer, approximately cruciform joint area is delimited between four neighboring stones. Both joint areas are used to drain rainwater into the floor. There are two opposite delimited middle joint areas above the at least one recess mentioned at the bottom of the stone in connection with each other and thus increase the seepage area.

In a special embodiment of the invention, the side surface of the paving stone jumps further back in the middle side surface area between the spacers than in the outer side surface areas next to the spacers. As a result, the above-mentioned central joint area is enlarged, which leads to a further improvement in rainwater drainage.

The invention is explained in detail below using two exemplary embodiments in conjunction with the drawings.

Figur 1

eine Draufsicht auf eine erste Ausführungsform eines Pflastersteines;

Figur 2

einen Vertikalschnitt durch den Pflasterstein der Figur 1 entlang der dort eingezeichneten strichpunktierten Linie;

Figur 3

einen aus dem Pflasterstein der Figuren 1 und 2 zusammengefügten Pflastersteinverband in der Draufsicht;

Figur 4

eine Draufsicht auf eine weitere Ausführungsform eines Pflastersteines;

Figur 5

einen Vertikalschnitt durch den Pflasterstein der Figur 4 entlang der in Figur 4 eingezeichneten strichpunktierten Linie; und

Figur 6

eine Draufsicht auf einen aus dem Pflasterstein der Figuren 4 und 5 zusammegefügten Verband.

Show it:

Figure 1

a plan view of a first embodiment of a paving stone;

Figure 2

a vertical section through the paving stone of Figure 1 along the dash-dotted line drawn there;

Figure 3

a from the paving stone of Figures 1 and 2 assembled paving stone in plan view;

Figure 4

a plan view of a further embodiment of a paving stone;

Figure 5

a vertical section through the paving stone of Figure 4 along the dash-dotted line shown in Figure 4; and

Figure 6

a plan view of an assembled from the paving stone of Figures 4 and 5 association.

The paving stone shown in Figures 1 and 2 is approximately cuboid and has four approximately rectangular side surfaces 2, 3, two of which are each formed parallel to each other, a bottom surface 11 and a top surface 1, which also extend parallel to each other. The two opposite side surfaces 2 are arranged at right angles to the other two opposite side surfaces 3.

There are two spacers 4 and 5 on each side surface, which are sections of the paving stone projecting from the respective side surfaces. The spacers of two opposite side surfaces are mirror images of each other, otherwise identical. In contrast, the spacers of two adjacent side surfaces are complementary to one another, as will be described in detail below.

The spacers 4, 5 have a front abutment surface 7, a central inclined surface 9, and a rear abutment surface 8. The abutment surfaces 7, 8 run parallel to the plane of the associated side surface and can be positively attached to corresponding abutment surfaces of adjacent stones. Here, a front abutment surface 7 of one stone comes into contact with a rear abutment surface 8 of the adjacent stone and a rear abutment surface 8 of the one stone comes into contact with a front abutment surface 7 of the adjacent stone. The inclined surfaces 9 also come into contact with one another.

It can be seen that the spacers of the opposite side surfaces 3 according to Figure 1 are designed so that their front, ie laterally protruding abutment surfaces 7 are arranged on the outside in relation to the associated side surface 3 in a direction parallel to the side surfaces, while the rear, ie recessed, abutment surfaces 8 are each located on the inside. In the case of the spacers 5 on the opposite side surfaces 2, this arrangement is reversed, that is to say the front abutment surfaces are on the inside, while the rear abutment surfaces are on the outside. Since the spacers 4 are arranged and designed to be complementary to the spacers 5, this means that a side surface 2 of a stone can be attached to a side surface 3 of another stone, ie the stone to be added must be rotated through 90 ° relative to the first stone to be able to be added.

Figure 1 also shows that the paving stone between its top surface 1 and its side surfaces 2, 3 has an all-round chamfer 6, which also extends over the top of the spacers. The chamfer angle is the same everywhere.

It can also be seen from FIGS. 1 and 2 that the paving stone has on its underside 11 two channel-shaped depressions 10 which extend from one side surface 3 to the opposite side surfaces 3 and thus connect the corresponding central joint areas 12 between the associated spacers 4.

FIG. 3 shows a top view of a bandage assembled from the paving stone of FIGS. 1 and 2. It can be seen that the stones with their spacers 4, 5 are joined to one another in a form-fitting manner. The step-shaped spacers result in all-round toothing, ie two stones cannot be moved against each other. It can be clearly seen that there are two adjacent stones are rotated by 90 ° to each other. As a result, the depressions 10 of two adjacent stones form an angle of 90 ° with one another. This prevents the formation of depressions which run continuously over several stones and which encourage the water to flow.

Figures 4 and 5 show a second embodiment of a paving stone. In these figures, identical parts of the stone which correspond to those of the stone of FIGS. 1 and 2 are provided with the same reference symbols. A detailed description of these parts is therefore no longer given.

The paving stone of Figures 4 and 5 has a corresponding structure with spacers and depressions as the paving stone of Figures 1 and 2. In this embodiment, the spacers 4, 5 are not as far as in the embodiment of Figures 1 and 2, so that overall there are narrower joints. Furthermore, the middle joint area 12 is wider than the outer joint area 13, which is due to the fact that the stone between the spacers of one side surface has a smaller width than next to the spacers in the outer regions of the side surface. Here too, however, an all-round chamfer 6 is provided, which extends between the top surface 1 and the side surfaces 2, 3 of the stone, including the top of the spacers.

While in the paving stone of FIGS. 1 and 2, the rear and front abutment surfaces 7, 8 of the spacers pass into the side surface via a surface running perpendicular to the associated side surface, that is to say in a step-like manner, this transition takes place in the spacers 4, 5 of the embodiment of FIGS. 4 and 5 over inclined surfaces 14 or 13. In addition, the spacers pass over the lateral outer inclined surface 13 directly over a rounded corner region 15 into the rear abutment surface 8 of the adjacent spacer. You therefore no longer jump back to the level of side surface 3.

The usual concrete qualities are used as material for the paving stones.

Claims (8)

Paving stone for insertion into a paving stone association with lateral spacers with abutting surfaces for form-fitting attachment to the abutting surfaces of the lateral spacers of a neighboring stone, each side surface of the paving stone having two spacers, each of which has two abutting surfaces offset in a direction perpendicular to the side surface, and the front one The abutment surface of a spacer can be attached to the rear abutment surface of the spacer of a neighboring stone by interlocking the spacers, characterized in that the paving stone on its underside (11) has at least one from one side surface (3) to the opposite side surface (3) between the two Spacers (4) extending groove-shaped recess (10) and that the spacers (4, 5) from two opposite side surfaces (2, 3) in relation to a side surface parallel central plane spewed are of a symmetrical design, the front abutment surfaces (7) of the spacers (4, 5) being offset from two opposite side surfaces (2 and 3) in the direction parallel to the side surfaces in such a way to the front abutment surfaces (7) of the spacers (5, 4) of the other two Opposite side surfaces (3 and 2) are arranged so that a positive attachment of the front abutting surfaces (7) to the rear abutting surfaces (8) of the spacers of a neighboring stone by interlocking them is only possible after rotating one stone by 90 ° relative to the other stone. Paving stone according to claim 1, characterized in that the step-like offset abutting surfaces (7, 8) of a spacer (4, 5) are connected to one another via an inclined surface (9). Paving stone according to claim 1 or 2, characterized in that it is chamfered between its top surface (1) and its side surfaces (2, 3). Paving stone according to claim 3, characterized in that it has an all-round chamfer (6). Paving stone according to one of the preceding claims, characterized in that it has on its underside (11) two channel-shaped depressions (10) running parallel to one another. Paving stone according to one of the preceding claims, characterized in that the spacers (4, 5) pass over an inclined surface (14) into the central side surface area (16). Paving stone according to one of the preceding claims, characterized in that the spacers (4, 5) pass over an inclined surface (13) into the outer side surface areas (15). Paving stone according to one of the preceding claims, characterized in that the side surface (2, 3) in the central side surface area (16) between the spacers (4, 5) springs back further than in the outer side surface areas (15) next to the spacers (4, 5)

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