Plastic mesh grating

Abstract

The invention relates to a cover (1) for a shaft or drainage body, in particular for a drainage channel. The cover comprises a frame element (3) and a plurality of supporting bars (4) and filling bars (5), wherein the supporting bars and filling bars form a grid pattern and are delimited by the frame element. The filling bars have regions (6), in particular webs, which protrude with respect to the supporting bars and / or the frame element and parts of which are formed on an upper surface (7) of the frame element in the installed position. In the installed position, recesses for receiving the protruding regions of another cover are formed in a lower surface (8) of the frame element.

Description

[0001] Plastic mesh grate

[0002] Description

[0003] The invention relates to a cover for a shaft or drainage body, in particular for a drainage channel, according to the preamble of claim 1. Furthermore, the invention relates to a shaft or drainage body, in particular a drainage channel, according to the preamble of claim 16.

[0004] To drain surfaces such as car parking areas, pedestrian areas, or shopping areas, a shaft or drain body is used. This is installed as a drainage system in the soil to be drained. Surface water flows from above through a fluid-permeable cover of the shaft or drain body into the drainage system.

[0005] To ensure adequate drainage and high stability, conventional covers are designed as a grid- or grate-shaped component that is connected to the shaft or drain body. Such a cover is known, for example, from EP 0 399 955 B1. The cover is provided with inlet slots through which water can flow. Furthermore, the cover is mounted in a support element with two frame parts, with the frame part having an at least approximately elongated recess on the inside. The disadvantage of this cover is that it is difficult to transport and offers insufficient slip resistance when walking on or driving over the cover in the installed state.

[0006] The invention is based on the object of providing a cover for a shaft or drainage body, in particular for a drainage channel, that is easily stackable and secured against mutual slippage, thereby enabling cost-effective transport while utilizing maximum loading space. The invention is further based on the object of providing a shaft or drainage body, in particular a drainage channel.

[0007] According to the invention, this object is achieved with regard to the cover by the subject matter of claim 1. With regard to the shaft or the drainage body, in particular the drainage channel, the above object is achieved by the subject matter of claim 16.

[0008] Specifically, the problem is solved by a cover for a shaft or drainage body, in particular for a drainage channel, which comprises a frame element and a plurality of support bars and filler bars, wherein the support bars and filler bars form a grid pattern and are delimited by the frame element. The filler bars have regions, in particular webs, that protrude from the support bars and / or the frame element. The protruding regions are formed in sections on a surface of the frame element that is upper in the installed position. Recesses are formed in the frame element on a surface of the frame element that is lower in the installed position for receiving the protruding regions of another cover.

[0009] An essential idea of ​​the invention is that by receiving the protruding areas of another cover, in particular a cover lying on the upper surface of the frame element in the installed position, which are formed in sections on an upper surface of the frame element in the installed position, through the recesses, the covers can be positioned relative to one another and thus the covers are secured against mutual slipping and are easily stackable.

[0010] The cover is particularly suitable for accommodating an identical cover.

[0011] In addition, the plurality of support bars and filler bars form a grid pattern, in particular a regular grid pattern. The grid pattern and the protruding areas of the filler bars form a surface structure of the cover, which ensures improved slip resistance. In particular, the surface structure and / or the roughness of the cover can achieve a slip resistance class of R11 or more. The frame element, in particular the rectangular frame element, delimits, preferably delimited around the outside, the plurality of support bars and filler bars. The support bars and the filler bars are connected to the frame element, in particular formed integrally with the frame element. The frame element as well as the support bars and the filler bars preferably have a rectangular cross-section, wherein the height (along the Z axis) is greater than the width (along the Y or X axis).This has the advantage that a high level of stability, in particular a load-bearing capacity class of K3 or more, can be achieved for the cover.

[0012] A supporting bar or filling bar is understood to mean bars, in particular rectangular bars, which extend from a surface of the frame element which runs vertically in the installed position to an opposite surface of the frame element.

[0013] The load-bearing bars and the cross bars are connected at intersection points, in particular, they are formed integrally with each other. Within the scope of the invention, the area of ​​the intersection points is assigned to the cross bars.

[0014] A recess is to be understood in particular as a groove which is formed in the frame element along a direction which runs vertically in the installed position and which is open towards a surface of the frame element which runs vertically in the installed position and the upper surface of the frame element.

[0015] A surface that runs vertically in the installed position is understood to be a surface that extends parallel to the XZ plane or the YZ plane. A surface that runs horizontally in the installed position is understood to be a surface that extends parallel to the XY plane. A direction that runs vertically in the installed position is understood to be a direction that extends parallel to the Z axis. A longitudinal direction is understood to be a direction that runs parallel to the X axis. A transverse direction is understood to be a direction that runs parallel to the Y axis. A long side is understood to be a side that extends parallel to the XZ plane.

[0016] In the context of the invention, "installation position" is understood to mean the state in which the cover is arranged in a shaft or drain body. The shaft or drain body can be made of metal, in particular sheet metal, plastic, concrete, in particular polymer concrete, or screed. Other materials for the shaft or drain body are possible.

[0017] Preferred embodiments of the invention are specified in the subclaims.

[0018] In a preferred embodiment of the cover, the protruding regions are at least substantially, in particular completely, flush with a vertically extending surface of the filler bars. This eliminates any offset at the transition from a vertically extending surface of the filler bars to the protruding regions. This is advantageous because the protruding regions exhibit increased stability, and the cover can be manufactured cost-effectively due to its simple geometry.

[0019] In a further preferred embodiment of the cover, the protruding areas are offset inward relative to the support bars and / or the frame element. The filler bars preferably end flush with the support bars in the area around them. This is advantageous because it minimizes the stress concentration between the support bars and the filler bars at the intersection points, ensuring increased stability of the cover.

[0020] In a further preferred embodiment of the cover, the geometry of the recesses corresponds at least substantially to that of the protruding regions formed on the upper surface of the frame element.

[0021] This makes it possible for a large number of covers to be stacked on top of each other by inserting the protruding areas into the corresponding recesses of another cover due to the uniform recesses and protruding areas.

[0022] In a further preferred embodiment of the cover, locking elements and / or positioning elements are attached to the frame element so as to protrude from the frame element, in particular substantially orthogonally to a vertical surface of the frame element in the installed position, or are formed integrally with the frame element. The locking elements and / or positioning elements are preferably attached to opposite vertical surfaces of the frame element in the installed position so as to protrude outwardly or are formed integrally with the frame element. Preferably, two opposing locking elements are attached to the frame element.

[0023] The locking elements can be designed as snap-in lugs. The locking elements are preferably attached in the longitudinal direction of the cover approximately in the middle of a surface of the frame element that is vertical in the installed position, or are formed integrally with the frame element. This has the advantage that the locking elements ensure reliable securing of the cover in the shaft or drain body and prevent accidental detachment of the cover from the shaft or drain body. Preferably, four opposing positioning elements are attached to the frame element. The positioning elements are preferably attached in the longitudinal direction of the cover to outer regions of a surface of the frame element that is vertical in the installed position, or are formed integrally with the frame element.This has the advantage that the positioning elements prevent the cover from slipping or twisting in the shaft or drain body and make it easier to insert the cover into the shaft or drain body.

[0024] In a further preferred embodiment of the cover, first locking elements can be pressed into recesses in the shaft or drain body in a substantially resilient manner. The locking element is preferably rigid, and the side wall of the shaft or drain body is resilient. The first locking elements can have a lifting groove. This is advantageous because in this way the cover can be inserted into the shaft or drain body without the use of tools. Furthermore, the cover can be removed from the shaft or drain body using a simple tool, in particular a screwdriver, by elastically deforming the first locking elements, in particular the first locking elements with a lifting groove, whereby the cover is released from the shaft or drain body.

[0025] In a further preferred embodiment of the cover, second locking elements are designed to be substantially rigid and can be inserted into recesses in the shaft or drain body. The second locking elements can be designed as pins. This is advantageous because it securely fixes the cover in the shaft or drain body. Furthermore, it prevents the cover from accidentally detaching from the shaft or drain body.

[0026] In a further preferred embodiment of the cover, the positioning elements are plastically deformable in the installed position of the cover and / or can be pressed against the inner surfaces of the shaft or drain body in a substantially resilient manner. The positioning elements can be plastically deformed in the installed position of the cover. In the installed position of the cover, the positioning elements exert a force on the inner surfaces of the shaft or drain body that prevents the cover from slipping or twisting. The positioning elements can be rounded towards the outer edge of the upper surface and the lower surface of the frame element in the installed position. This is advantageous because it allows the cover to be easily positioned in the shaft or drain body.

[0027] In a further preferred embodiment of the cover, the filler bars have alternating protruding areas and areas that are flush or recessed relative to the support bars and / or the frame element along a longitudinal direction of the filler bars. The protruding areas are formed on the filler bars between the support bars and / or the frame element. This is advantageous because it ensures good slip resistance of the cover.

[0028] In a further preferred embodiment of the cover, the protruding regions of adjacent filler bars are offset along a longitudinal direction of the support bars. Thus, a region of the filler bar that protrudes between the support bars and / or the frame element is advantageously followed by a region of the adjacent filler bar that is flush or recessed relative to the support bars and / or the frame element. Preferably, the protruding regions of adjacent filler bars are offset by exactly one protruding region. This is advantageous because it increases the slip resistance of the cover.

[0029] In a further preferred embodiment of the cover, the protruding areas are formed on all areas of the filler bars between the support bars and / or between the support bars and the frame element. Preferably, the protruding areas are interrupted at the intersection points of the support bars with the filler bars. Only areas of the filler bars adjacent to the intersection points of the support bars with the filler bars can have flush or recessed areas relative to the support bars and / or the frame element. This is advantageous because it increases the slip resistance of the cover.

[0030] In a further preferred embodiment of the cover, the filler bars adjacent to the long sides of the frame element in the installed position are shortened compared to the lower surface of the frame element and / or the other filler bars, in particular the support bars, in particular shortened in the vertical direction when the cover is installed. Alternatively, it is possible for several of the filler bars adjacent to the long side of the frame element in the installed position to be shortened compared to the lower surface of the frame element and / or the other filler bars, in particular shortened in the vertical direction when the cover is installed. This is advantageous because it ensures free water run-up and there are no bottlenecks between the filler bars and the shaft or drainage element.

[0031] In a further preferred embodiment of the cover, the filler bars run essentially in the longitudinal direction of the shaft or cover when the cover is installed. The support bars run essentially in the transverse direction of the shaft or cover when the cover is installed. In particular, the filler bars run orthogonally to the support bars. This is advantageous because it allows the cover to be manufactured simply and cost-effectively.

[0032] In a further preferred embodiment of the cover, the edges of the surface of the protruding areas that runs horizontally in the installed position have a radius of 0.1-0.5 mm or are sharp-edged. In particular, the edges of the surface that runs horizontally in the installed position have a radius of 0.2 mm, more preferably at least 0.3 mm and / or at most 1.5 mm, preferably at most 1 mm, and optionally at most 0.7 mm. This is advantageous because it ensures good slip resistance of the cover.

[0033] In a further preferred embodiment of the cover, the surface of the protruding regions has a rough surface. This is advantageous because it provides good slip resistance for the cover. In a further preferred embodiment of the cover, the protruding regions have a height of at least 0.5 mm, more preferably at least 1 mm and / or at most 5 mm, preferably at most 3 mm, optionally at most 2 mm. This is advantageous because it provides good slip resistance for the cover.

[0034] In a further preferred embodiment of the cover, the cover is made essentially, in particular entirely, of plastic, preferably of a thermoplastic, in particular of a plastic-fiber mixture. For example, the fibers can be glass fibers or carbon fibers. This is advantageous because it reduces the weight of the cover, which in turn allows for inexpensive and easier transport.

[0035] According to the independent claim 16, the invention relates to a shaft or drainage body, in particular a drainage channel, with a cover according to the invention.

[0036] With regard to the shaft or drain body, reference is made to the advantages explained in connection with the cover. Furthermore, the shaft or drain body may alternatively or additionally feature individual or a combination of several of the features previously mentioned with regard to the cover.

[0037] The invention will be explained in more detail below with reference to the accompanying drawings. The illustrated embodiments represent examples of how the cover according to the invention and the shaft or drain body according to the invention can be designed.

[0038] Showing:

[0039] Fig. 1 is a first perspective view of an embodiment of a cover according to the invention in the installed position;

[0040] Fig. 2 shows a second perspective view of an embodiment of a cover according to the invention in the installed position; Fig. 3 shows a perspective detailed view of the cover according to a further embodiment of the invention, showing the protruding areas;

[0041] Fig. 4 is a perspective detailed view of the cover according to a further embodiment of the invention, wherein the recesses in the frame element are shown on the lower surface of the frame element in the installed position;

[0042] Fig. 5 is a perspective detailed view of two adjacent covers according to an embodiment of the invention, which can be stacked on top of each other;

[0043] Fig. 6 is a plan view of the cover according to Fig. 1;

[0044] Fig. 7 is a plan view of an embodiment of an inventive

[0045] Cover;

[0046] Fig. 8 is a perspective view of the cover according to a further embodiment of the invention, showing the filler bars adjacent to the long side of the frame element;

[0047] Fig. 9 is a cross-section through the cover in the installed position according to Fig. 8, wherein the cover is inserted in the shaft or drain body;

[0048] Fig. 10 is a perspective view of the cover according to Fig. 1, wherein the cover is inserted into the shaft or drain body.

[0049] Fig. 11 is a further perspective view of the cover Fig. 10; and

[0050] Fig. 12 a side view of the cover according to Fig. 1 in installed position and a cross section through the shaft or drain body.

[0051] In the following, the same reference numerals are used for identical parts and parts with the same function. Figure 1 shows a cover 1 in the installed position. The cover 1 comprises a frame element 3 and a plurality of support bars 4 and filler bars 5. The support bars 4 form a regular grid pattern with the filler bars 5. The support bars 4 and the filler bars 5 are delimited by the frame element 3. The support bars 4 are connected to the inner surface of the frame element 3 which runs in the longitudinal direction in the installed position. The filler bars 5 are connected to the inner surface of the frame element 3 which runs in the transverse direction in the installed position. The support bars 4 and the filler bars 5 are connected to one another at intersection points. Locking elements 10 are attached in a protruding manner to the outer surface of the frame element 5 which runs in the longitudinal direction in the installed position.The locking elements 10 are arranged opposite one another approximately in the middle of the outer surface of the frame element 5, which runs in the longitudinal direction in the installed position. Positioning elements 11 are protrudingly mounted on the outer surface of the frame element 5, which runs in the longitudinal direction in the installed position. The positioning elements 11 are arranged opposite one another in an end section of the outer surface of the frame element 5, which runs in the longitudinal direction in the installed position. The positioning elements 11 are designed as circular segments. The locking elements 10 are designed as detent lugs. One of the locking elements 10 has a lifting groove.

[0052] Figure 2 shows the cover 1 in its installed position. The locking element opposite the locking element 10 with the lifting groove is shown. Also shown are the positioning elements 11 opposite the positioning elements 11. The locking element opposite the locking element 10 with the lifting groove is formed by two protruding pins.

[0053] Figure 3 shows a section of the cover 11 in the installed position. Protruding regions 6 are formed on the filler bars 5. The protruding regions 6 are delimited by the frame element 3 and / or the support bars 4. The protruding regions 6 are offset inwards relative to the support bars 4. The protruding regions 6 terminate at a vertically running surface of the filler bars 5. The protruding regions 6 adjacent to an upper surface 7 of the frame element 3 are formed in sections on an upper surface 7 of the frame element. The protruding regions 6 are formed approximately up to half the longitudinal extent of the upper surface 7. Figure 4 shows a section of the underside of the cover 1. Recesses 9 are formed on the lower surface 8 of the frame element 3.The recesses are formed on the lower surface 8 of the frame element 3, which extends in the transverse direction of the frame element 5. The recesses are open relative to the lower surface 8 and the inner surface of the frame element 3, which extends in the transverse direction in the installed position. The recesses 9 are arranged parallel to the filler bars 5.

[0054] Figure 5 shows two covers 1 arranged one above the other. The protruding areas 6 can be accommodated by the recesses 5 of another cover. The geometry of the recesses 5 corresponds to the geometry of the protruding areas 6 formed in sections on the upper surface 7 of the frame element. In the stacked state, the cover rests on the upper surface 7 of the other cover.

[0055] Figure 6 shows the cover 1 in the installed position. Two positioning elements 11 are arranged on each of two opposite surfaces of the frame element 3 that run longitudinally in the installed position. In addition, a locking element 10 is arranged on each of two opposite surfaces of the frame element 3 that run longitudinally in the installed position. In the longitudinal direction of the filler bars 5, alternating protruding areas 6 and areas that are flush or recessed with respect to the support bars 4 and / or the frame element 3 are formed on the filler bars 5. The protruding areas 6 are formed between the frame element 3 and / or the support bars 4. In the longitudinal direction of the support bars 4, alternating protruding areas 6 and areas that are flush or recessed with respect to the support bars 4 and / or the frame element 3 are formed on the filler bars 5.Along a longitudinal direction of the support bars 4, the protruding regions 6 of adjacent filler bars 5 are offset. The protruding regions 6 of a filler bar 5 are opposite the support bars 4 and / or the frame element 3 by flush or countersunk regions of an adjacent filler bar 5.

[0056] Figure 7 shows the cover 1 in the installed position. Two positioning elements 11 are arranged on two opposite surfaces of the frame element 3 that extend longitudinally in the installed position. Furthermore, a locking element 10 is arranged on two opposite surfaces of the frame element 3 that extend longitudinally in the installed position. The protruding areas 6 are formed on all areas of the filler bars 5 between the support bars 4 and / or between the support bars 4 and the frame element.

[0057] Figure 8 shows the underside of the cover 1. The filler bars 5 adjacent to one long side of the frame element 3 are shortened compared to the lower surface 8 of the frame element 3 and the other filler bars 5.

[0058] Figure 9 shows the cover 1 in its installed position. The cover 1 is inserted into the shaft or drain body 2. The locking elements 10 are resiliently pressed into recesses in the shaft or drain body 2. The filler bars 5 adjacent to one long side of the frame element 3 are shorter than the lower surface 8 of the frame element 3 and the other filler bars 5.

[0059] Figure 10 shows the cover 1 being inserted into the shaft or drain body 2. A rear locking element 10 is inserted into a rear recess of the shaft or drain body 2.

[0060] Figure 11 shows the cover 1 being inserted into the shaft or drain body 2. A front locking element 10 can be inserted elastically into a front recess of the shaft or drain body 2.

[0061] Figure 12 shows the cover 1 in its installed position. The cover 1 is inserted into the shaft or drain body 2.

[0062] At this point, it should be noted that all parts described above, viewed individually and in any combination, particularly the details shown in the drawings, are claimed as essential to the invention. Modifications to these are familiar to those skilled in the art.

[0063] Reference list:

[0064] 1 cover

[0065] 2 shaft or drain body

[0066] 3 Frame element Supporting bars Filler bars Protruding area Upper surface Lower surface Recess Locking elements Positioning elements

Claims

Claims 1. Cover (1) for a shaft or drain body (2), in particular for a drainage channel, comprising: a frame element (3), and a plurality of support bars (4) and filler bars (5), wherein the support bars (4) and filler bars (5) form a grid pattern and are delimited by the frame element (3), characterized in that the filler bars (5) have regions (6), in particular webs, that protrude from the support bars (4) and / or the frame element (3), which are formed in sections on a surface (7) of the frame element (3) that is upper in the installed position, wherein recesses (9) are formed in the frame element (3) on a surface (8) of the frame element (3) that is lower in the installed position to accommodate the protruding regions (6) of another cover (1).

2. Cover (1) according to claim 1, characterized in that the projecting regions (6) terminate at least substantially with a vertically extending surface of the filler bars (5).

3. Cover (1) according to claim 1 or 2, characterized in that the projecting areas (6) are offset inwards relative to the support bars (4) and / or the frame element (3).

4. Cover (1) according to one of the preceding claims, characterized in that the geometry of the recess (9) corresponds at least substantially to that of the protruding regions (6) formed on the upper surface (7) of the frame element (3).

5. Cover (1) according to one of the preceding claims, characterized in that locking elements (10) and / or positioning elements (11) are attached to the frame element (3) in a manner protruding from the frame element (3).

6. Cover (1) according to one of the preceding claims, characterized in that first locking elements (10) can be pressed into recesses of the shaft or drain body (2) in a substantially spring-elastic manner.

7. Cover (1) according to one of the preceding claims, characterized in that second locking elements (10) are designed to be substantially rigid and can be inserted into recesses in the shaft or drain body (2).

8. Cover (1) according to one of the preceding claims, characterized in that the positioning elements (11) are plastically deformable in the installed position of the cover (1) and / or can be pressed essentially resiliently against inner surfaces of the shaft or drain body (2).

9. Cover (1) according to one of the preceding claims, characterized in that along a longitudinal direction of the filling bars (5), the filling bars (5) have alternating projecting areas (6) and flush or recessed areas with respect to the support bars (4) and / or the frame element (3).

10. Cover (1) according to one of the preceding claims, characterized in that the projecting regions (6) of adjacent filling bars (5) are offset along a longitudinal direction of the supporting bars (4).

11. Cover (1) according to one of claims 1-8, characterized in that the protruding areas (6) are formed on all areas of the filling bars (5) between the supporting bars (4) and / or between the supporting bars (4) and the frame element (3).

12. Cover (1) according to one of the preceding claims, characterized in that the filler bars (5) adjacent to the longitudinal side of the frame element (3) in the installed position are shortened compared to the lower surface (8) of the frame element (3) and / or the other filler bars (5).

13. Cover (1) according to one of the preceding claims, characterized in that the filler bars (5) run essentially in the longitudinal direction of the shaft or the cover (1) in the installed position of the cover (1), wherein the support bars (4) run essentially in the transverse direction of the shaft or the cover (1) in the installed position of the cover (1).

14. Cover (1) according to one of the preceding claims, characterized in that the edges of the surface of the protruding areas (6) which runs horizontally in the installed position have a radius of 0.1-0.5 mm or are sharp-edged.

15. Cover (1) according to one of the preceding claims, characterized in that the surface of the protruding areas (6) has a rough surface.

16. Cover (1) according to one of the preceding claims, characterized in that the protruding region (6) has a height of at least 0.2 mm, more preferably at least 1 mm and / or at most 5 mm, preferably at most 3 mm, optionally at most 2 mm.

17. Cover (1) according to one of the preceding claims, characterized in that the cover (1) is made essentially, in particular completely, of plastic, preferably of a thermoplastic plastic, in particular of a plastic-fibre mixture.

18. Shaft or drainage body (2), in particular a drainage channel, with the cover (1) according to one of claims 1-17.

Images