Step device with plastic nosing

Abstract

The invention relates to a step device (2) comprising a metallic step frame (4) and at least one leading element (12) attached thereto, forming a tread surface (6) of which at least a first part (8), which adjoins a leading edge (10) limiting the tread surface (6) and facing opposite to a direction of entry (AR), is formed by the leading element (12). The leading element (12) is at least partially made of a plastic.

Description

[0001] The invention relates to a step device. The step device has a metallic step frame. Furthermore, the step device has at least one step element attached to the step frame. The step device forms a tread surface. At least a first part of the tread surface is formed by the step element. The first part of the tread surface borders a step edge. The step edge defines the tread surface and faces the opposite direction of travel.

[0002] Such a step device is known. Typically, several such step devices are used to form a staircase. The tread serves as a support for the foot of a user approaching the step device in the direction of travel. The leading edge typically faces the approaching user. The first part of the tread adjacent to the leading edge is subjected to particularly heavy wear by the user.

[0003] In the known step device, the tread element forming the first part of the tread surface, as well as the step frame, is made of metal. A disadvantage of the known step device is the lack of slip resistance of the first part of the tread surface. Furthermore, the tread element is subject to wear, which further reduces the slip resistance during use. To restore the intended slip resistance, the entire step device must usually be replaced. The object of the present invention is to provide a step device that avoids the above disadvantages.

[0004] According to the invention, the step element is at least partially made of a plastic. In particular, the step element is at least predominantly, preferably entirely, made of the plastic. The use of the plastic for the step element has a largely positive effect on its slip resistance. The combination of the step element made of plastic with the metallic step frame ensures the stability of the step device in addition to the advantages to be achieved. Furthermore, the step element made of plastic has the advantage that it can not only be painted with a warning color, but can be dyed through with the warning color, so that the warning color remains unchanged even after wear.

[0005] The step device is, in particular, a step that can be mounted individually for use outdoors or, for example, in industrial applications. The tread surface is, in particular, a flat, particularly level, upper surface of the step device. The extension of the tread surface in the direction of approach is preferably smaller than the extension of the tread surface transverse to the direction of approach, so that the step device can be used to form a conventional staircase with steps that can accommodate several feet next to each other.

[0006] The step frame provides the necessary stability for the step device. The step frame is located below the tread surface. The step frame is preferably made of steel or stainless steel. The step frame preferably comprises at least two lateral stringers for mounting the step device and / or cross members extending transversely to the tread direction, particularly between the stringers. The step frame is particularly formed by welded components.

[0007] The tread is in particular rectangular in shape or has a rectangular edge. The nosing delimits the tread in that the nosing represents part of the edge of the tread. The nosing is in particular straight in shape. At the nosing, the first part of the tread borders in particular on a further surface which extends at an angle to at least the first part of the tread. In a plan view of the assembled step device, the nosing is in particular formed on a side of the tread that faces the next lower step device, so that when ascending the stairs the user has to lift their foot at least partially over the nosing before placing their foot on the tread.

[0008] The tread element forms the tread surface completely or partially. If the tread surface is partially formed by the tread element, the first part of the tread surface is preferably smaller than the remaining part of the tread surface. The remaining part of the tread surface is formed, in particular, by at least one metallic element.

[0009] The tread surface or the aforementioned parts thereof are preferably closed or designed with openings, i.e. interrupted. In the case of a design with openings, the tread surface or the respective part thereof is designed in particular as a grate or grating. In the case of a design with openings, the tread surface is alternatively or additionally formed by a plurality of protruding support elements of the step device, which are located so close to one another that the user can place their foot on a sufficient number of support elements and perceives the support elements as a whole as forming a continuous surface. The support elements enable the user to stand securely on the step device. The tread surface is therefore not necessarily to be understood as a closed surface in the geometric sense, but can equally be composed of a plurality of or similarly aligned and / or spaced-apart surface elements.In this case, the tread surface is to be understood as the enveloping surface touching the support elements or the surface elements.

[0010] Particularly preferably, the first part of the tread surface is designed to be closed by the tread element. This applies in particular at least with the exception of fastening openings in the tread element, which are closed by fastening elements that are passed through the openings to secure the tread element. The remaining part of the tread surface is preferably formed by intersecting, in particular metallic, longitudinal and / or transverse bars.

[0011] Preferably, the starting element is formed at least partially, in particular entirely, from a fiber-reinforced plastic. Particularly preferably, the starting element is formed from a glass-fiber-reinforced plastic. As a result, the starting element contributes significantly to the stability of the step device and has a reduced tendency to wear.

[0012] The tread element preferably has a sand coating. The tread element has the sand coating in particular on the side forming the first part of the tread surface and / or in the area forming the tread edge. The sand coating significantly increases slip resistance. Sand coating means that, during the manufacture of the tread element, grains of sand are applied to a base body to achieve a rougher surface of the tread element, which grains are then fixed to the base body. Corundum or quartz sand is used in particular for this purpose, with the sand grains preferably being fixed using a resin.

[0013] The tread element preferably forms at least partially a front surface of the step device. The front surface is in particular angled or perpendicular to the step direction and / or borders on the step edge. The side of the tread element forming the front surface is in particular (also) sanded. The front surface is in particular flat, preferably horizontal, wherein the geometric plane in which the front surface lies is not intersected by the step device. In the case of a flat design of the tread surface, the geometric plane in which the tread surface lies is preferably not intersected by the step device. By forming the front surface with the tread element, the wear tolerance can be increased in the area of ​​the step device in which, according to experience, the user frequently strikes the step device with their shoes and which is therefore subject to particular stress.

[0014] A width of the first part of the tread surface measured perpendicular to the direction of approach preferably constitutes a predominant portion of the width of the tread surface. The width is measured, in particular, parallel to the planar extent of the tread surface and / or in a horizontal direction. Particularly preferably, the width of the first part of the tread surface constitutes at least 90% of the width of the entire tread surface. Extending the tread element over as large a portion of the total width of the tread surface as possible allows the aforementioned advantages to be extended to the entire step device.

[0015] The tread element preferably has a tread region in cross-section, which extends elongated in cross-section parallel to the tread direction and forms at least the first part of the tread surface. The cross-sectional plane extends parallel to the tread direction and in particular at right angles to the tread surface, preferably vertically. The tread region means that the part of the tread element forming the first part of the tread surface has a flat surface in order to fully provide the advantages of the tread element according to the invention and to provide the step frame with sufficient space to achieve the best possible stability of the step device. In particular, the front surface is not formed by the tread region and is spaced apart from it.Particularly preferably, the tread element has a first elongated tread leg in cross-section, which forms at least the first part of the tread surface and is formed in particular by the tread region. Furthermore, the tread element preferably has a second elongated tread leg in cross-section, which extends at an angle to the first tread leg, in particular at an angle of 90° to the first tread leg. The second tread leg in particular forms at least partially the front surface. Due to the first tread leg and the second tread leg, the tread element is preferably L-shaped in cross-section, with the tread legs particularly preferably being of equal length. Ideally, the tread legs each have a length of approximately 55 mm and a thickness of 4 mm.This design of the starting element allows the advantages of the starting element according to the invention to be realized to a particularly large extent and at the same time the stability of the starting element can be significantly increased.

[0016] The tread element is preferably attached to a receiving element of the step device, in particular the step frame. The receiving element is in particular a cross member. The receiving element is therefore preferably made of metal. The tread element is preferably detachably attached to the receiving element so that, after reaching a critical level of wear, it can be replaced (individually) to restore the intended slip resistance without requiring replacement of the entire step device. The receiving element is preferably positioned such that the first part of the tread surface and a part of the tread surface adjacent to the first part of the tread surface, in particular the remaining part of the tread surface, lie in the same plane.This means that the receiving element is positioned recessed in cross-section relative to the adjacent part of the tread surface in order to achieve an overall flat tread surface, taking into account the thickness of the step element or its stepping area or its first stepping leg. This distinguishes the step device according to the invention from the known step device in that, in the latter, the metallic component forming the step edge was normally welded from above onto the component forming the remaining tread surface, so that the tread surface was stepped in cross-section.

[0017] The flat design of the tread surface ensures minimal wear on the step element and increases the safety of the user of the step device. The step frame, in particular at least one cheek, preferably touches the latter plane next to the step element without intersecting the plane. The same applies to the plane in which the front surface preferably lies. The step frame can therefore be considered to laterally form the tread surface. Regardless of how the step element is attached to the receiving element, a width of the receiving element preferably equals the width of the step element. In particular, both the receiving element and the step element touch a first cheek of the step frame at one end and an opposite, second cheek of the step frame at the other end. The receiving element and / or the step element can be described as elongated overall.

[0018] In cross-section, the receiving element preferably has a first elongated receiving leg and a second elongated receiving leg, wherein the second receiving leg extends elongatedly at an angle to the first receiving leg. The receiving element and / or the step element are / is therefore designed as an angle profile (E). In particular, the first receiving leg extends parallel to the first step leg in cross-section and the second receiving leg parallel to the second step leg, so that the step legs rest at least partially flat against the receiving legs in cross-section. This results in a particularly high level of stability of the step device. The receiving legs each have a cross-section thickness of approximately 5 mm.

[0019] The tread element is preferably fastened to the step frame, in particular to the receiving element, by means of at least one fastening element. The fastening element is particularly preferably a detachable fastening element such as a screw and / or a rivet. In particular, the tread element is fastened by means of at least three, in particular five, fastening elements arranged offset transversely to the tread direction. The at least one fastening element extends through the tread element and / or receiving element. The tread element and the receiving element preferably have aligned bores through which the fastening element is guided. This enables stable fastening and, in particular, easy replacement of the tread element.

[0020] The at least one fastening element preferably extends in a direction perpendicular to at least the first part of the tread surface through the step element and / or the receiving element. In particular, the fastening element extends through the first step leg. A head of the at least one fastening element is thus arranged on the tread surface or co-forms the tread surface. This arrangement of the fastening element ensures that the entire tread surface is as flat as possible, even in the face of a certain amount of wear on the step element. The step device is preferably free of further fastening elements, in particular at least those that extend through the second step leg.

[0021] The step device preferably has a plurality of first and a plurality of second, in particular metallic, grate elements. The first grate elements extend longitudinally in the step direction. The second grate elements extend longitudinally transversely to the step direction. The first grate elements and the second grate elements intersect in a plan view. The intersecting grate elements preferably form the part of the step surface adjacent to the first part of the step surface, in particular the remaining part of the step surface. In particular, this structure is a conventional structure of the step device, apart from the step element according to the invention.

[0022] The invention is further achieved by a stair device. The stair device has a support device, in particular with lateral supports, and a plurality of step devices fastened to the support device, as described above / or below. A first of the step devices is arranged such that its tread surface is at least partially arranged in a base plane. A second of the step devices is arranged such that its tread surface is spaced from the base plane such that the step frame of the second step device is at least partially arranged between the tread surface of the second step device and the base plane. The leading edge of the second step device faces the first step device in a plan view.

[0023] Further details and advantages of the invention can be found in the schematically illustrated embodiments described below. They show: Fig. 1 a perspective view of a step device according to the invention, Fig. 2 a plan view of the step device according to Fig. 1 , Fig. 3 a rear view of the step device according to Fig. 1 , Fig. 4 a side view of the step device according to Fig. 1 , Fig. 5 a cross section of the step device according to Fig. 1 and Fig. 6 a cross-section of a starting element of the step device according to Fig. 1 .

[0024] Parts with the same or similar functions are provided with identical reference numerals where appropriate. Individual technical features of the exemplary embodiment described below can also lead to further developments according to the invention with the further features described, but at least in combination with the features of claim 1.

[0025] The Fig. 1 to 4are different views of a step device 2 according to the invention. The step device 2 has a metallic step frame 4 with two lateral cheeks, one of which is Fig. 4 is shown in detail. The step device 2 forms a tread surface 6. A first part 8 of the tread surface 6 is formed by a step element 12 fastened to the step frame 4. The first part 8 of the tread surface 6 borders on a step edge 10 that delimits the tread surface 6 and faces opposite a step direction AR. At the step edge 10, the first part 8 of the tread surface 6 and a front surface 14 formed by the step element 12 border one another. The step element 12 is made of a sanded, glass fiber reinforced plastic.

[0026] The tread surface 6 is flat. A width B1 of the tread element 12, and thus of the first part 8 of the tread surface 6, measured perpendicular to the tread direction AR and parallel to the tread surface 6, constitutes at least 90% of a width B2 of the tread surface 6, in particular of the entire step device 2. A remaining part 22 of the tread surface 6, adjacent to the first part 8 of the tread surface 6, is formed by grating elements 30, 32 (see in particular Fig. 2 and 3 ). First grate elements 30 extend longitudinally in the starting direction AR. Second grate elements 32 extend longitudinally transversely to the starting direction AR. In the plan view according to Fig. 2 the first grate elements 30 cross the second grate elements 32. The grate elements 30, 32 are serrated on the upper side.

[0027] The starting element 12 has a cross-section according to Fig. 6a first elongated tread leg 16, which forms the first part 8 of the tread surface 6. Furthermore, the tread element 12 has a second elongated tread leg 18, which extends elongately at an angle of 90° to the first tread leg 16 and forms the front surface 14.

[0028] The starting element 12 is fixed by means of five fastening elements 28, which are Fig. 2 to 6 not shown, are releasably attached to a receiving element 20 of the step frame 4. The receiving element 20 is positioned such that the first part 8 of the tread surface 6 and the remaining part 22 of the tread surface 6 lie in the same plane AE (see Fig. 5). This means that the receiving element 20 is positioned slightly recessed in cross-section relative to the plane. The receiving element 20 has, in cross-section, a first receiving leg 24 extending longitudinally parallel to the first step leg 16 and a second receiving leg 26 extending longitudinally parallel to the second step leg 18. The receiving element 20, the grating elements 32, and the cheeks of the step frame 4 are welded together.

Claims

1. Step device (2) comprising a metallic step frame (4) and at least one step element (12) attached thereto and forming a tread surface (6), of which at least a first part (8) bordering a step edge (10) delimiting the tread surface (6) and facing the opposite direction of tread (AR) is formed by the step element (12), characterized in that the starting element (12) is at least partially made of a plastic.

2. Step device according to claim 1, characterized in that the starting element (12) is at least partially made of a fiber-reinforced, in particular glass-fiber-reinforced, plastic.

3. Step device according to one of the preceding claims, characterized in that the starting element (12) has a sand coating.

4. Step device according to one of the preceding claims, characterized in thatthe step element (12) at least partially forms a front surface (14) of the step device (2) which is perpendicular to the step direction (AR) and adjacent to the step edge (10).

5. Step device according to one of the preceding claims, characterized in that a width (B1) of the first part (8) of the tread surface (6) measured at right angles to the starting direction (AR) makes up a predominant part of the width (B2) of the tread surface (6), preferably at least 90% of the width (B2) of the tread surface (6).

6. Step device according to one of the preceding claims, characterized in that the tread element (12) has, in a cross-section, a tread region extending longitudinally parallel to the tread direction (AR), which forms at least the first part (8) of the tread surface (6).

7. Step device according to one of the preceding claims, characterized in thatthe tread element (12) has, in cross-section, a first elongate tread leg (16) which forms at least the first part (8) of the tread surface (6), and a second elongate tread leg (18) which is angled in particular by 90° to the first tread leg (16) and which in particular at least partially forms the front surface (14).

8. Step device according to one of the preceding claims, characterized in that the step frame (4) has a metallic receiving element (20) to which the step element (12) is releasably attached.

9. Step device according to claim 8, characterized in that the receiving element (20) is positioned such that the first part (8) of the tread surface (6) and a part (22) of the tread surface (6) adjacent to the first part (8) of the tread surface (6), in particular the remainder of the tread surface (6), lie in the same plane (AE).

10. Step device according to claim 8 or 9, characterized in that a width (B1) of the receiving element (20) measured at right angles to the starting direction (AR) is equal to a width of the starting element (12).

11. Step device according to one of claims 8 to 10, characterized in that the receiving element (20) has, in cross-section, a first receiving leg (24) extending longitudinally parallel to the first starting leg (16) and a second receiving leg (26) extending longitudinally parallel to the second starting leg (18).

12. Step device according to one of claims 8 to 11, characterized in that the starting element (12) is fastened by means of at least one fastening element (28) extending through the starting element (12) and / or the receiving element (20), in particular a screw and / or a rivet.

13. Step device according to claim 12, characterized in thatthe at least one fastening element (28) extends in a direction (BR) at right angles to at least the first part (8) of the tread surface (6) through the tread element (12) and the receiving element (20).

14. Step device according to one of the preceding claims, characterized by a plurality of first grate elements (30) extending longitudinally in the treading direction (AR) and a plurality of second grate elements (32) extending longitudinally transversely to the treading direction (AR) and crossing the first grate elements (30) in a plan view, wherein the first and second grate elements (30, 32) form a further part (22) of the treading surface (6), in particular the remainder of the treading surface (6).

15. Staircase device with a support device and a plurality of step devices (2) fastened thereto according to one of the preceding claims, wherein a first of the step devices (2) is arranged such that its tread surface (6) is at least partially arranged in a base plane, and a second of the step devices (2) is arranged such that its tread surface (6) is spaced from the base plane such that the step frame (4) of the second step device (2) is at least partially arranged between its tread surface (6) and the base plane, and the leading edge (10) of the second step device (2) faces the first step device (2) in a plan view.

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