EP3715530B1 - Cover for a floor opening near a curb stone - Google Patents

Description

The invention relates to a cover for a floor opening in the area of a curb according to the preamble of claim 1.

Covers for floor openings, for example shafts for waste water or as access to underground lines and the like, are known from road construction in numerous designs. They are almost always made up of a covering body and a frame in which the covering body sits. The covering body and the frame are usually made of metal, in particular cast iron or steel. A special embodiment consists in that the cover body, which is generally horizontal, has a lateral extension, which is designed as part of a curb. The cover not only covers a floor opening in the area of the roadway, which is located next to a curb, but also the associated curb, especially the Banquet. Such covers can be advantageously used at the edges of tunnels and galleries. Due to the narrow tunnel tube, the shafts and channels are often partly below the curb and/or banquet. Such covers are also referred to as step covers for thoroughfares.

A corresponding cover for a floor opening in the area of a curb, for example, is out CH 702 821 A1 famous. A covering body can be inserted into a frame and then removably fastened to the frame. An upper side of the covering body consists essentially of a lower traffic area and a pedestal, which forms an elevated arranged pedestal area. The pedestal mimics the geometry of a curb.

In order to secure the covering body in the inserted position in the frame, in particular against unauthorized access and undesired lifting out by suction when it is driven over, two locking devices located opposite one another are provided on the covering body below the traffic area. In practice, these are also referred to as cam locks. Such a cam lock is described in detail, for example, in DE 1 930 395 U described. The cam lock has a screw whose screw head sits in the traffic area and can be turned from above with a key. A locking element is screwed onto the screw shank, which protrudes from the underside of the cover body, and is secured against unscrewing by a securing element at the end of the screw shank. Friction between the screw shank and the locking element allows the latter to pivot against a stop in a pocket in the frame by turning the screw head. If you then turn the screw head further, the locking element pulls in the direction of the screw head and finally clamps the cover body to the frame. It is loosened by turning the screw head in the opposite direction. First of all, the clamping force is reduced and finally the locking element pivots out of the pocket again, so that the covering body can be lifted out of the frame. If the friction of the thread is not sufficient for pivoting out, the screw must be turned so far that the securing element collides with the locking element and a high pivoting force can thereby be exerted on the locking element.

Even when delivered, the insertion of the cover into the frame by turning one screw per locking device is time-consuming and only with one suitable tool feasible. Major disadvantages of the locking device are primarily over the period of use because it is exposed to dirt and corrosion. The locking device must at least be kept clean and lubricated so that its function is permanently guaranteed for the service of the manhole or channel behind the cover. Otherwise the locking device will seize up. Because service intervals for a service coverage are not desirable and are not taken into account in practice, the release of the locking device often turns out to be tedious and is only possible with the use of brute force. Spare parts must always be kept available to cover any damage to the locking device. Any tunnel closures during maintenance work can be significantly extended due to these problems. For safety reasons, at least the adjacent lane of the road cannot be driven on until the covering body is securely seated in the frame again.

Cases are also known from practice in which the locking device was not or only insufficiently actuated when inserting the cover into the frame, which can lead to a dangerous lifting of the cover when driven over.

Also not to be underestimated is the complexity of the locking device with several individual components, the need to use several tools to remove protective caps from the screw heads, to operate the screws and to lift the cover body. Other tools are required for servicing the locking device, such as a grease gun, screwdriver and wrench.

Out of DE 20 2006 013 894 U1 a cover is also known, on the underside of which two U-shaped spring elements are arranged on the flat cover body. Snap-in lugs at their ends snap into snap-in recesses when inserted into a cover frame. This creates a latching connection when inserting, which is formed on opposite short sides of the cover. As a result, the cover body is resiliently mounted in the direction of travel between the two spring-loaded snap-in connections.

The object of the invention is to create a cover for floor openings in the area of a curb, the covering body of which can be inserted into the frame and removed again as quickly as possible without the risk of application errors, with this also being achieved to a particular extent over the entire service life and in the event of service target. The solution should also be cost-effective and reliable to implement. Securing the covering body in the frame should continue to protect against unintentional lifting of the covering body.

Main features of the invention are set out in the characterizing part of claim 1. Configurations are the subject of claims 2 to 15 and the description.

The invention relates to a cover for a floor opening in the area of a curb, in particular a step cover, with a cover body having an upper side and an underside, the upper side having a traffic surface and an elongated platform surface of an elongated platform at the edge, the platform surface being arranged higher than the Traffic area, and with a frame in which the cover can be inserted and from which the cover can be removed. At least one latching connection, preferably exactly two latching connections, is formed between the covering body and the frame when the covering body is (in particular completely) inserted into the frame, with the latching connection being arranged below the traffic surface and having at least one flexible latching element and one latching element receptacle.

One advantage of this configuration is that the cover (which can also be called a cover device) requires very little knowledge about handling. In other words, the latching connection can be described in that at least one latching connection, preferably exactly two latching connections, with a flexible latching element and a latching element receptacle between the cover body and the frame is formed below the traffic surface when the cover body is inserted into the frame.

The way the snap-in connection works leads to a self-locking effect that can hardly be misused. A secure anchoring of the cover body is given immediately after complete insertion of the cover. The cover and its snap-in connection require very little maintenance, as there are no additional components that require special attention. The flexurally elastic latching element does not require any displaceably or rotatably mounted components. As a result, nothing can get stuck due to dirt and corrosion. This enables quick maintenance because opening and closing is very easy. There are also no need for several special tools. A simple lifting or levering tool such as a pickaxe or pickaxe is sufficient to release the latching connection and open the cover body. Also after longer periods of time in which the covering body has not been opened, it can be opened quickly and without damage. Such covers with a pedestal are also referred to as step covers, because this pedestal is used to simulate a curb or curb element/section. For the typical application, the covering body and the frame should each have an at least essentially rectangular or square outline. The preferred embodiment with at least two such snap-in connections has the advantage that, on the one hand, higher forces can be absorbed and, on the other hand, the covering body can be easily clamped against the frame, which prevents noise from rattling and supports any sealing. Limiting the locking connections to two is particularly cost-effective.

In one possible embodiment, it is provided that the flexurally elastic latching element is arranged on the cover body and the latching element receptacle is formed on the frame. This has the advantage that, in the event of damage to the flexurally elastic latching element that cannot be ruled out, a replacement cover body can be used in the short term in case of doubt. In a different possible configuration, the flexurally elastic latching element is arranged on the frame and the latching element receptacle is formed on the cover body. As a result, damage to the flexurally elastic latching element caused by handling the cover body can be avoided.

Optionally, the flexurally elastic latching element can be designed in one piece with the component from the group covering body and frame on which it is arranged. This can be implemented particularly cost-effectively.

In another variant, the flexurally elastic latching element is fixed in a form-fitting and/or material-fitting manner to the component from the group covering body and frame on which it is arranged. As a result, there is more freedom in the choice of material for the covering body and the flexible latching element. In addition, the flexurally elastic latching element can be easily replaced if necessary.

According to a special embodiment, a receiving shoe for the flexible locking element is integrally formed on the component from the group covering body and frame on which the flexible locking element is fixed, and the flexible locking element is fixed in the receiving shoe. This has the advantage that the position of the flexurally elastic locking element is clearly defined during assembly and also a stable connection is achieved. For this purpose, the region of the flexible latching element that sits in the receiving shoe is preferably supported against bending by the receiving shoe.

In another special embodiment, a bearing projection for the flexible latching element is integrally formed on the component from the group covering body and frame on which the flexible latching element is fixed, and the flexible latching element is arranged on the bearing projection. The flexurally elastic latching element is preferably integrally formed on the bearing projection or the latching element is fastened to the bearing projection. This has the advantage that the latching element can be shaped in a stable manner or a separate flexible latching element can be fixed in a stable manner on the bearing projection. The bearing projection preferably has a greater material thickness than the flexurally elastic latching element. Thus, the bearing projection tends to be significantly less deformed than the flexurally elastic latching element.

In a preferred embodiment, the receiving shoe or the alternative bearing projection is arranged on or on the underside of the covering body.

The flexible latching element is preferably made of metal, in particular iron or steel. A metal enables high permanent locking forces.

In a special construction, the flexurally elastic latching element has a free-standing arm, at the free end of which a latching geometry is formed, which engages with the latching element receptacle when the covering body is (completely) inserted into the frame. Relatively large movements can be achieved by an arm through elastic deformation without individual deformation areas being overstressed and thus plastically deformed.

Optionally, the arm has a strip-shaped bending area, at the free end of which the latching geometry is arranged. A strip-shaped bending area has the advantage that bending moments of different magnitudes are present depending on the bending direction, which can be used for different states of the cover body. The cross-sectional dimensions of the arm should be less than its length, preferably by at least a factor of 1.5. Thus, a relatively large display is achieved, whereby large changes in position of the locking geometry only small local deformations over the require strip-shaped bending area. For example, the profile of the strip-shaped bending area can resemble or correspond to a flat bar.

In a particular embodiment, the strip-shaped bending area has a curvature in a relieved state, as it exists when the covering body is removed from the frame, and in a state as it exists, as it exists when the covering body is (completely) inserted into the frame on. Because of this (pre-)curvature, there is hardly any angle of attack in the area of the latching geometry at which an elastic deformation of the strip-shaped bending area cannot occur under load. Unintentional plastic deformations can be avoided in this way. Preferably the curvature is between 70 degrees and 110 degrees. Curvature means the change in direction when going through the curve. Furthermore, it is preferred that the arm is aligned at its fixed end at least substantially transversely to the elongated platform surface. Furthermore, it is preferred if the free end of the arm is aligned at least essentially parallel to the elongated platform surface. This applies at least in each case when the snap-in connection is arranged in the area of a front edge which is arranged opposite the elongated pedestal. In this case, the platform lies in the area of a rear edge lying opposite the front edge.

A special design provides for the locking geometry to be an elevation on the outer radius of the free-standing arm. A relatively wide latching edge can thus be formed.

Optionally, the locking geometry can have a trapezoidal cross-sectional profile. This supports both locking and unlocking.

According to a particular variant, the strip-shaped flexing zone has, in an unloaded state, as it exists when the covering body is removed from the frame, a curvature that is weaker than in a loaded state, as it exists when the covering body is inserted in the frame is. As a result, the flexurally elastic locking element is under tension in the loaded state and counteracts rattling noises, for example.

The curvature preferably lies in a bending plane which is aligned at least essentially parallel to the traffic area. As a result, the latching geometry can jump into the latching element receptacle in this parallel plane and be supported in this direction.

The cover is preferably designed in such a way that an elastic deformation of the strip-shaped bending region when the cover body is inserted into the frame is essentially characterized by a change in curvature. This achieves a defined elastic deformation.

According to a special embodiment, the cover is configured or designed in such a way that an elastic deformation of the strip-shaped bending area when the cover body is removed from the frame is characterized at least essentially by a change in curvature, in particular essentially solely by a change in curvature . This achieves a clear movement and expansions in the component can be easily calculated.

Alternatively, it is also possible for the cover to be configured or designed in such a way that elastic deformation of the strip-shaped bending area when the covering body is removed from the frame is characterized at least essentially by a change in curvature and by torsion of the strip-shaped bending area. In particular, it is possible, on the one hand, to insert the covering body into the frame with the relatively light forces required and, on the other hand, to achieve relatively high pull-out forces for securing the covering body in the frame. Nevertheless, a non-destructive release of the locking connection is possible. The sequence of movements when removing the covering body from the frame can be characterized in particular by the fact that initially relatively high pull-out forces have to be applied in order to twist the strip-shaped bending area while the flexurally elastic locking element is still in engagement with the locking element receptacle. This consequently changes the setting angle of the strip-shaped bending area in the area of the latching element receptacle, which changes the angle between the latching edges and finally favors bending of the strip-shaped bending area. Then, as the deflection increases and the latch pops out of the latch receptacle, the torsion will release and move the latch away from the latch receptacle. At the latest when the flexurally elastic latching element no longer has any contact, the curvature also relaxes.

Furthermore, an embodiment is advantageous in which the latching element receptacle is assigned an insertion ramp, via which the flexible latching element can be used when the Cover body is guided into the frame in the locking element recording. This makes insertion easier.

In a preferred embodiment, the locking connection is designed in such a way that lower external forces are required for inserting the covering body into the frame than for removing it. On the one hand, this enables simple assembly and, on the other hand, high pull-out forces are achieved, which prevent the covering body from being lifted out unintentionally, for example due to airflow or vehicle suction. The design of the corresponding geometries and the bending forces of the locking connection are of the greatest importance. With a corresponding design of the latching connection, the dead weight of the covering body, possibly in conjunction with a relatively small external force, can also suffice for insertion.

The upper side of the covering body is preferably divided at least essentially into the traffic area and the platform area. In addition, there can optionally be a more or less steep side surface between the traffic area and the platform area.

The traffic area is preferably designed to be essentially flat and completely or essentially horizontal and extends over the entire length of the covering body. In addition, it is preferred if the platform surface is designed to be essentially flat and entirely or essentially horizontal and extends over the entire length of the covering body. An essentially horizontal alignment of the traffic area and the platform area is also to be understood as meaning designs that have a gradient for draining off liquid, in particular a gradient in the range of 1.5 to 10.0 degrees. Alignment also refers to the correct installation position of the cover. The upper side can be formed at least partially by an anti-slip profile.

The elongated podium should have the general external shape of a curb. In particular, the covering body should have a curb element forming the elongated landing and a path element forming the traffic surface. The curb element and the path element can be designed in one piece or in one piece. This is particularly stable and easy to use. Alternatively, the curb element can also be connected to the path element in a form-fitting and/or material-fitting manner. As a result, for example, a level adjustment between the traffic area and the platform area is possible. Optionally, a two-piece design of the cover body is also possible.

Furthermore, an elongate cavity can be formed in the pedestal, in which preferably at least one supporting wall, for example a cast-in supporting wall, is arranged. Due to the cavity, the material requirement is low. A high rigidity or strength can be achieved by means of a supporting wall.

The cover body and/or the frame are preferably made of cast metal, in particular cast iron or cast steel. These materials are each dimensionally stable, durable and inexpensive.

With regard to the frame, an embodiment is to be preferred according to which it forms a cover receptacle into which the cover body can be inserted in such a way that at least the traffic surface is arranged flush or raised relative to the adjacent area of the frame. This adjoining area can be made very narrow or it itself forms a traffic area on the upper side. For simple assembly, a design is available in which the frame has an upwardly directed leg on a rear longitudinal side, which leg interacts with the pedestal. On the opposite side, the frame can have an upwardly directed limb on a front longitudinal side, which limb interacts with the traffic surface and is shorter than the limb on the rear longitudinal side. This creates the impression, at least visually, of a U-shaped cross section, the U-shape having two legs of different lengths and the longer of the legs interacting with the platform. The frame can also have raised cheeks on its transverse sides, which face the end faces of the pedestal when the covering body is inserted in the frame, and which are higher than legs of the frame which interact with the traffic surface in the adjoining area.

To increase the rigidity, it is optionally possible for the covering body to have at least one stiffening rib on the underside.

Furthermore, an embodiment is advantageous according to which the cover body has at least two runners on the underside, which in particular project downwards beyond the flexible latching element. A defined sliding movement when the covering body is pushed in can be achieved by the runners. For this purpose, the runners are preferably each rounded at at least one of their ends, in particular on the side of the front edge. In addition, the flexurally elastic latching element when removing and inserting the cover body from or into the frame and protected when parking the cover body on a base. The runners should be aligned transversely to the longitudinal direction of the platform. In other words, the runners should in particular run transversely to the front edge and rear edge of the covering body.

A more detailed embodiment consists in that the pedestal is arranged in the area of a rear edge of the cover body and the cover has at least one access opening for receiving a tool in the area of an opposite front edge. This supports an ergonomic lifting of the cover including overcoming the forces of the snap-in connection. For example, the access opening can be a slot-shaped opening in the top of the covering body, which widens below the top so that an angled tool can be inserted into the access opening and is positively fixed in the access opening after a rotation of 90°, for example.

In order to achieve a harmonious and defined movement of the covering body relative to the frame, it can be provided that the pedestal is arranged in the area of a rear edge of the covering body and a pivot bearing is formed between the covering body and the frame in the area of the rear edge of the covering body when the covering body is in is inserted into the frame, about which the covering body is pivoted when being inserted into and removed from the frame.

According to a special embodiment of the cover, the pedestal is again arranged in the area of the rear edge of the cover body and the cover body is in positive engagement with the frame in the area of the rear edge when it is inserted into the frame. As a result, the covering body is secured against lifting in the region of the rear edge. For example, the covering body can have one or more, for example two or three, locking projections on the rear edge. These can be designed, for example, in the form of bolts or ribs. These locking projections should then engage in a form-fitting manner in locking recesses in the frame, in particular in their legs, when the covering body is placed in the frame. Optionally, the bolt recesses can have a closed bottom or be designed, for example, as through-holes in the leg of the frame.

For a sealed embodiment of the cover, an annular seal can be formed between the underside of the cover body and the frame when the cover body is inserted into the frame. For this purpose, the cover on the underside a circumferential Have a groove into which a sealing element is inserted. The cover is thus mounted with little vibration. The cover body preferably sits tightly in the frame when it is inserted into it. The cover body is preferably drawn into the frame by the latching connection in such a way that the sealing element is compressed. In this way, a surface watertight cover can be provided. Alternatively, the covering body can also have one or more water passage openings. It is then designed in the manner of a street gully.

There is also a traffic route construction with a primary traffic area and a peripheral kerbstone, with a cover, as described above and below, being integrated into the primary traffic area and the peripheral kerbstone in such a way that the traffic area of the covering body is at least essentially planar in the primary traffic area is located and the elongated pedestal of the cover is at least substantially integrated flush with the course of the marginal curb when the cover is inserted into the frame. In this way, for example, a cavity can be opened underneath the cover, which is at least partially underneath the pedestal and/or the curb. Opening along with the area of the pedestal enables the provision of a large service access.

Fig. 1

eine perspektivische Ansicht einer Abdeckung von schräg-oben;

Fig. 2

eine perspektivische Ansicht einer Abdeckung von schräg-unten;

Fig. 3

einen Vergrößerungsausschnitt aus der Fig. 2 im Bereich einer Rastverbindung;

Fig. 4

eine perspektivische Ansicht mit einem Querschnitt einer Abdeckung;

Fig. 5

einen Querschnitt durch eine Verkehrswegekonstruktion mit einer Abdeckung, wobei ein Abdeckkörper in einem Rahmen sitzt;

Fig. 6

einen Querschnitt durch die Verkehrswegekonstruktion nach Fig. 5, wobei der Abdeckkörper relativ zum Rahmen leicht nach oben geschwenkt ist; und

Fig. 7

einen Querschnitt durch die Verkehrswegekonstruktion nach Fig. 6, wobei der Abdeckkörper relativ zum Rahmen weiter nach oben geschwenkt und bereits teilweise aus dem Rahmen herausgezogen ist.

Further features, details and advantages of the invention result from the wording of the claims and from the following description of exemplary embodiments with reference to the drawings. Show it:

1

a perspective view of a cover obliquely-above;

2

a perspective view of a cover obliquely from below;

3

an enlargement of the 2 in the area of a snap-in connection;

4

a perspective view with a cross section of a cover;

figure 5

a cross section through a traffic route construction with a cover, wherein a covering body is seated in a frame;

6

a cross-section through the traffic route construction figure 5 , wherein the cover body is pivoted slightly upwards relative to the frame; and

7

a cross-section through the traffic route construction 6 , wherein the covering body is pivoted further upwards relative to the frame and is already partially pulled out of the frame.

1 shows a perspective view of a cover 1 for a floor opening in the area of a curb, diagonally from above. This cover 1 has a cover body 10 and a frame 40 each made of cast metal, particularly cast iron or cast steel. The cover body 10 and the frame 40 each have an at least substantially rectangular or square outline.

The covering body 10 has an upper side 11 and an underside 12, the upper side 11 having a traffic surface 13 and an elongated platform surface 31 of an elongated platform 30 at the edge. The pedestal 30 is located in particular in the area of a rear edge (cf. reference number 18 in 2 ) of the covering body 10, which faces a front edge 19. The elongated podium 30 has the general external shape of a curb. For this purpose, the upper side 11 of the covering body 10 is essentially divided into the traffic area 13 and the platform area 31, with the platform area 31 being arranged higher than the traffic area 13. The traffic area 13 is essentially flat and in the installation position it is completely or at least essentially horizontally and extends over the entire length of the cover body 10. The platform surface 31 is also essentially flat, in the installed position it is aligned completely or at least essentially horizontally and also extends over the entire length of the cover body 10. To bridge the height difference the traffic area 13 and the platform area 31 are connected to one another via a steep flank area 37 . The upper side 11 is partially formed by an anti-slip profiling 25 . This affects both traffic area 13 and platform area 31.

In the present case, the covering body 10 is composed of a curb element 32, which forms the elongated platform 30, and a path element 14, which forms the traffic area 13, the curb element 32 and the path element 14 being formed in one piece or in one piece, in particular being cast in one piece. In the pedestal 30 an elongated cavity 33 is formed, which contains either air or a different filling material. The latter can serve to stiffen and/or increase the weight. Optionally, the curb element 32 could also be connected to the path element 14 in a form-fitting and/or material-fitting manner.

The covering body 10 can be inserted into the frame 40 and removed from it. As shown, the cover body 10 is slightly raised relative to the frame 40 at the leading edge 19 while an opposite trailing edge is still seated within the frame 40 . For this the covering body 10 has an access opening 20 in the region of the front edge 19 for receiving a tool, for example a pickaxe.

As can be seen, the frame 40 forms a cover receptacle 41, into which the cover body 20 can be inserted in such a way that both the traffic surface 13 are flush with the adjacent area of the frame 40 and the platform surface 31 are flush with the adjacent area of the frame 40 (cf. on this too 4 ). For this purpose, the frame 40 has an upwardly directed leg 43 on a rear longitudinal side, which cooperates with the pedestal 30 . On the opposite side, the frame 40 has an upwardly directed leg 42 on a front longitudinal side, which leg cooperates with the traffic surface 13 and is shorter than the leg 43 on the rear longitudinal side. This creates the impression, at least visually, of a U-shaped (or J-shaped) cross section of the frame 40 , the U-shape having two legs 42 , 43 of different lengths and the longer of the legs 43 interacting with the platform 30 . In addition, the frame 40 has raised cheeks 44, 45 on its transverse sides, which face faces 35, 36 of the pedestal 30 are opposite when the covering body 10 is inserted into the frame 40. These cheeks 44, 45 are higher than the legs of the frame 40, which interact with the traffic surface 13 in the adjacent area. The height of the cheeks 44, 45 is flush with the height of the longer leg 43 on the rear longitudinal side.

Two flexible latching elements 51 , 61 are arranged on the covering body 10 below the traffic area 13 in the area of the front edge 19 . This will be discussed in more detail in connection with the further figures.

In addition, the gap between the covering body 10 and the frame 40 shows that the covering body 10 has five stiffening ribs 15 in the form of runners 16, 17 on the underside 12, which protrude downwards from the flexible latching element 51, 61. The runners 16, 17 protect the flexurally elastic latching elements 51, 61 when removing and inserting the cover body 10 from or into the frame 40 and when the cover body 10 is placed on a base. As can be seen, the runners 16, 17 are aligned transversely to the longitudinal direction of the platform 30 and therefore run transversely to the front edge 19 and rear edge 18. The runners 16, 17 are rounded at both of their ends. This can be seen in 1 in particular with regard to the side of the leading edge 19. The rounding in the region of the trailing edge 18 can be seen, for example, in FIG 2 .

2 shows a perspective view of the cover 1 obliquely from below, the covering body 10 lying completely in the frame 40 . remarks to 1 , what a 2 reference numbers contained apply accordingly. Opposite of 1 can be recognized in 2 additional two stiffening ribs 15, which run in the longitudinal direction and are surmounted by the runners 16,17.

In addition, one recognizes in 2 that the two flexible locking elements 51, 61 arranged below the traffic surface 13 each belong to a locking connection 50, 60 arranged below the traffic surface 13. In addition to the flexible latching element 51, 61, each of these latching connections 50, 60 includes a latching element receptacle 52, 62, one of the flexible latching elements 51, 61 being in engagement with one of the latching element receptacles 52, 62 when the covering body 10 is fully inserted into the frame 40 is inserted, like it too 2 indicates. When latching into the latching element receptacles 52, 62, the flexible latching elements 51, 61 at least essentially bend in a bending plane E, which is at least essentially parallel to the traffic area 13 (cf. 1 ) is aligned. The orientation of the bending plane E is shown with the normal vector next to the cover 1.

3 shows an enlarged section of the 2 in the area of one of the two snap-in connections 50, which are mirror-inverted.

The latching connection 50 shown has a flexible latching element 51 on the cover body 10 and a latching element receptacle 52 on the frame 40. The flexible latching element 51 is formed in one piece with the covering body 10 and the latching element receptacle 52 is formed by a pocket that is integrally formed on the frame 40. It can be seen that a bearing projection 53 for the flexurally elastic latching element 51 is integrally formed on the covering body 10 and the flexurally elastic latching element 51 is in turn integrally formed on the bearing projection 53 . The bearing projection 53 forms a kind of base and is an elevation on the underside of the covering body 10.

The flexurally elastic locking element 51 has a free-standing arm 54, at the free end 55 of which a locking geometry 56 is formed, which engages with the locking element receptacle 52 when, as in FIG 2 shown the cover 10 is inserted into the frame 40. In particular, the arm 54 has a strip-shaped bending area 57, at the free end of which the latching geometry 56 is arranged. The cross-sectional dimensions of arm 54 are each smaller than its length. The profile of the strip-shaped bending area 57 is similar to that of a flat bar, but it tapers in height and material thickness in the direction of the free end.

The strip-shaped bending area 57 has a relieved state, as it is when the cover body 10 is taken out of the frame 40 (as also in FIG 1 shown), and in a state as it is when the cover body 10 is fully inserted into the frame 40 - as in the 2 and 3 shown - each have a curvature 58 on. The curvature 58 is weaker in the unloaded state than in the loaded state. The curvature ranges between 70 degrees and 110 degrees in both states. In particular, the curvature in the representation is 3 about 90 degrees. Correspondingly, the curvature in the unloaded state is less than 90 degrees, but in particular more than 70 degrees, for example 85 degrees. The angle information relates to the change in direction between the ends of the strip-shaped bending area 57. As a result, the arm 54 is aligned at its fixed end at least essentially transversely to the elongated platform surface 31 or to the front edge 19. At its free end, the arm 54 is aligned at least essentially parallel to the elongated platform surface 31 or to the front edge 19 . As can be seen, the latching geometry 56 is an elevation on the outer radius of the free-standing arm 54, with the latching geometry 56 having a trapezoidal cross-sectional profile.

The curvature 58 of the strip-shaped bending region 57 lies in the bending plane E, which is at least essentially parallel to the traffic area 13 (see 1 ) is aligned. As a result, the locking geometry 56 is pivoted at a distance from the underside 12 of the covering body completely or at least essentially parallel to the traffic surface when the curvature 58 of the strip-shaped bending area 57 changes. Provision is made in particular for an elastic deformation of the strip-shaped bending region 57 to be characterized essentially by a change in the curvature 58 when the covering body 10 is inserted into the frame 40 . Conversely, it is provided that an elastic deformation of the strip-shaped bending region 57 when the covering body 10 is removed from the frame 40 is essentially characterized by a change in the curvature 58 .

In 4 one recognizes now a perspective view with a cross section of the cover according to the Figures 1 to 3 , wherein the cover body 10 is completely accommodated in the frame 40. Comments on reference numbers in the Figures 1 to 3 included apply therefore also for identical reference numerals in 4 are specified. In addition, you can see in 4 that the latching element receptacle 52 is assigned an insertion ramp 59 via which the flexible latching element 51 is guided into the latching element receptacle 52 when the cover body 10 is inserted into the frame 40 .

Furthermore, one recognizes in this section 4 that in the elongated cavity 33 of the pedestal 30 a support wall 34 is formed, in particular as a one-piece cast element of the pedestal 30.

first time in 4 it can also be seen that when the covering body 10 is inserted into the frame 40 , an annular seal 22 is formed between the underside 12 of the covering body 10 and the frame 40 . For this purpose, the covering body 10 has a circumferential groove 23 on the underside 12, into which a sealing element 24 is inserted. As a result, the covering body 10 sits tightly closed in the frame 40. Optionally, however, the covering body 10 could also have water passage openings.

In the area of the rear edge 18 of the covering body 10, a pivot bearing 21 is formed between the covering body 10 and the frame 40 when the covering body 10 is inserted into the frame 40, around which the covering body 10 pivots when it is inserted into and removed from the frame 40 is panned. In particular, when the front edge 19 is raised or lowered, the covering body 10 pivots about this pivot bearing 21 and slides in the direction of the front edge 19 or counter to it.

This pivoting movement is particularly clear from a comparison of the figure 5 and 6 emerge, in each of which a cross-sectional view through a traffic route construction 100 with a cover 1, as in the Figures 1 to 4 is shown. 7 contains a cross-section through the traffic route construction 6 , wherein the covering body 10 is pivoted further upwards relative to the frame 40 and is already partially pulled out of the frame 40 in the direction of the front edge 19 . Regarding the reference numbers given in the figure 5 , 6 and 7 will refer to the remarks on the Figures 1 to 4 referred. The few differences are briefly explained below.

Part of the traffic route construction 100 is a primary traffic surface 103, which can consist of an asphalt or concrete structure, for example, and a peripheral curb 102, which can consist of concrete, for example. The cover 1 is with her Frame 40 is installed in a floor opening 101 in such a way that it is integrated into the primary traffic area 103 and the curb 102 at the edge, in such a way that the traffic area 13 of the covering body 10 lies at least substantially planar in the primary traffic area 103 and the elongate pedestal 30 of the covering body 10 is integrated at least substantially flush into the profile of the edge-side curb 102 if the covering body 10 is as in FIG figure 5 fully inserted into the frame 40 as shown. In this way, a cavity 104 can be opened underneath the cover 1, for example a duct or manhole. Because of the pedestal 30 it is thus possible to provide access to a cavity 104 which is at least partially below the pedestal 30 and/or the curb 102 in an uncomplicated manner.

According to figure 5 sits the cover 10 first in the frame 40, as well as from 4 is shown. The flexurally elastic latching element 51 engages with the latching element receptacle 52 . What is not visible in the sectional view is that the covering body 10 is positively engaged with the frame 40 in the region of the rear edge 18 so that it cannot be lifted at the rear edge 18 .

In 6 the covering body 10 is already slightly lifted out of the frame 40 at the front edge 19 and pivoted relative to the frame 40 . Up to this point, the covering body 10 has hardly shifted in the direction of the front edge 19 . What is also not visible in the sectional view is that the cover body 10 is still positively engaged with the frame 40 in the area of the rear edge 18 in this pivoted position, so that it cannot be lifted at the rear edge 18 .

In the cross section after 7 the cover body 10 is pivoted further upwards relative to the frame 40 than in 6 and already partially pulled out of the frame 40 in the direction of the front edge 19 . The runners 16, 17 (regarding runner 17 cf. Figures 1 to 3 ) is used so that the covering body 10 can be slidably supported on the frame 40 when it is pulled out. The rounding of the runners 16, 17 also contributes in particular to this.

At the rear edge 18, which has now moved away from the leg 43, one can now see a locking projection 26, which can be designed, for example, in the form of a bolt or ribs. This locking projection 26 engages in the pivoted positions 2 , 3 , 4 , 5 and 6 form-fitting in bolt recesses in the frame 40, in particular in the leg 43, a. The bolt recesses can have a closed bottom or can also be designed as through-holes in the leg 43 .

An insertion of the cover 10 in the frame 40 is compared with the image sequence figure 5 , 6 and 7 in reverse order. Starting from the position in 7 the covering body 10 is simply pushed in the direction of its rear edge 18 . The locking projection 26 then slides into the locking recess and according to the rounding of the runners 16, 17, the cover 10 is lowered into the frame 40. According to 6 then the flexurally elastic latching elements 51 come into contact with the or the correlating insertion ramps 59. Due to their own weight or an additional force from above, the flexurally elastic locking elements 51 are deformed and slide over the insertion ramps 59 until the locking geometry 56 finally jumps into the correlating locking element receptacles 62 . Then the position is after figure 5 reached. If the own weight of the covering body 10 is not sufficiently large to bring about the deformation of the flexible latching elements 51, an external force can be applied from above, for example the fitter can step on the covering body 10. <b>Reference List</b> 1 cover 40 frame 41 cover shot 10 cover body 42 leg 11 top 43 leg 12 bottom 44 cheek 13 traffic area 45 cheek 14 path element 15 stiffening rib 50 snap connection 16 skid 51 flexible locking element 17 skid 52 locking element recording 18 trailing edge 53 bearing projection 19 leading edge 54 poor 20 access opening 55 free end (arm) 21 swivel bearing 56 locking geometry 22 ring seal 57 strip-shaped bending area 23 groove 58 curvature 24 sealing element 59 infeed ramp 25 anti-slip profile 60 snap connection 30 pedestal 61 flexible locking element 31 platform area 62 locking element recording 32 curb element 33 cavity 100 traffic route construction 34 retaining wall 101 bottom opening 35 face 102 curb 36 face 103 primary traffic area E bending plane

Claims (15)

1. Cover (1) for a floor opening (101) near a curb stone (102),

   - having a cover body (10) with a top side (11) and a bottom side (12),

   - wherein the top side (11) has a traffic surface (13) and

   - has at the edge an elongated platform surface (31) of an elongated platform (30),

   - wherein the platform surface (31) is arranged higher than the traffic surface (13),

   - and having a frame (40),

   - into which the cover body (10) can be laid and out of which the cover body (10) can be removed,

   characterised in that

   - between the cover body (10) and the frame (40) is formed at least one detent connection (50, 60) when the cover body (10) is laid into the frame (40),

   - wherein the detent connection (50, 60) is arranged below the traffic surface (13)

   - and has at least one flexurally elastic detent element (51, 61)

   - and a detent element receptacle (52, 62).
2. Cover (1) according to claim 1, characterised in that the flexurally elastic detent element (51, 61) is arranged on the cover body (10) and the detent element receptacle (52, 62) is formed on the frame (40), or that the flexurally elastic detent element (51, 61) is arranged on the frame (40) and the detent element receptacle (52, 62) is formed on the cover body (10).
3. Cover (1) according to claim 2, characterised in that the flexurally elastic detent element (51, 61) is formed integrally with the component from the group comprising cover body (10) and frame (40) on which it is arranged.
4. Cover (1) according to claim 2, characterised in that the flexurally elastic detent element (51, 61) is fixed in a form-fitting and/or material-fitting manner on the component from the group comprising cover body (10) and frame (40) on which it is arranged.
5. Cover (1) according to claim 4, characterised in that on the component from the group comprising cover body (10) and frame (40) to which the flexurally elastic detent element (51, 61) is fixed is formed integrally a receiving shoe for the flexurally elastic detent element (51, 61) and the flexurally elastic detent element (51, 61) is fixed in the receiving shoe.
6. Cover (1) according to claim 3 or 4, characterised in that on the component from the group comprising cover body (10) and frame (40) to which the flexurally elastic detent element (51, 61) is fixed is formed integrally a bearing protrusion (53) for the flexurally elastic detent element (51, 61) and the flexurally elastic detent element (51, 61) is arranged on the bearing protrusion (53).
7. Cover (1) according to any of the preceding claims, characterised in that the flexurally elastic detent element (51, 61) has a freestanding arm (54) at the free end (55) of which is formed a detent geometry (56) which is in engagement with the detent element receptacle (52) when the cover body (10) is laid into the frame (40), wherein the arm (54) is aligned at its free end at least substantially parallel to the elongated platform surface (31) and the detent connection (50, 60) is arranged in the region of a front edge (19) which is arranged opposite the elongated platform (30), and the platform (30) is situated in the region of a rear edge (18) situated opposite the front edge (19).
8. Cover (1) according to claim 7, characterised in that the cover body (10) in the region of the rear edge (18) is in form-fitting engagement with the frame (40) when it is laid into the frame (40) and thereby secured in the region of the rear edge (18) against being lifted.
9. Cover (1) according to any of claims 7 or 8, characterised in that in the region of the rear edge (18) of the cover body (10) a pivot bearing (21) is formed between the cover body (10) and the frame (40) when the cover body (10) is laid into the frame (40) in order that the cover body (10) is pivoted when being laid into and when being taken out of the frame (40).
10. Cover (1) according to any of claims 7 to 9, characterised in that the arm (54) has a strip-shaped bending region (57) at the free end of which is arranged the detent geometry (56).
11. Cover (1) according to claim 10, characterised in that the strip-shaped bending region (57) has a curvature (58) respectively in an unloaded state, such as prevails when the cover body (10) is removed from the frame (40), and in a state such as prevails when the cover body (10) is laid into the frame (40).
12. Cover (1) according to claim 11, characterised in that the curvature (58) lies in a bending plane (E) which is aligned at least substantially parallel to the traffic surface (13).
13. Cover (1) according to any of claims 11 or 12, characterised in that an elastic deformation of the strip-shaped bending region (57) when laying the cover body (10) into the frame (40) is characterised substantially by a change in the curvature (58).
14. Cover (1) according to any of the preceding claims, characterised in that in the detent element receptacle (52, 62) is assigned an introduction ramp (59) via which the flexurally elastic detent element (51, 61) is guided into the detent element receptacle (52, 62) when laying the cover body (10) into the frame (40).
15. Cover (1) according to any of the preceding claims, characterised in that in the cover body (10) has on the bottom side (12) at least two skids (16, 17) which protrude downwardly beyond the flexurally elastic detent element (51, 61).

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