Guide device and furniture or kitchen appliance comprising two opposing guide devices

Abstract

The invention relates to a guide device (2, 3, 43, 45) for movably guiding a drawer element (6) and for arranging on a lateral wall (9, 10) in the interior of a piece of furniture or a kitchen appliance. The guide device (2, 3, 43, 45) comprises a fixed rail which can be paired with the lateral wall and a pull-out rail which can be coupled to the drawer element and which can be moved relative to the fixed rail, wherein rollers (23, 24, 34, 35) for movably guiding the rails relative to each other are provided between the fixed rail and the pull-out rail. The fixed rail and the pull-out rail additionally have a base section (15, 18, 27, 36) which adjoins lateral sections (16, 17, 19, 20, 30, 31, 33, 41) that protrude laterally from the base section (15, 18, 27, 36) towards the same side at opposite respective ends of the base section when viewed in cross-section perpendicularly to the longitudinal extension of the rails.

Description

[0001] International patent application Applicant: Grass GmbH Our reference: G 9680-PC -1– "Guide device and piece of furniture or kitchen appliance with two opposing guide devices" State of the art Devices for moving a movable piece of furniture, in particular for kitchen appliances such as ovens or a microwave oven, are already known in a variety of forms. From the German utility model 202022 100 393 U1, a microwave cooking appliance is known which has a rail extension device with a first or inner rail and a second or outer rail which is displaceable along a longitudinal axis relative to the first or inner rail and which is made of an electrically conductive material. The aim is to shield the interior of the rail extension device from microwave radiation, in particular from the direction of a microwave source.Objects and advantages of the invention The object of the invention is to provide an alternative guide device for the displaceable guidance of a sliding element, which is used in particular in a microwave cooking appliance or microwave oven. This object is achieved by the features of the independent claims. International patent application Applicant: Grass GmbH Our reference: G 9680-PC -2– Advantageous and expedient embodiments, variants, and further developments of the invention are set forth in the dependent claims.The invention is based on a guide device for the displaceable guidance of a sliding element and for arrangement on a side wall in the interior of a piece of furniture or a kitchen appliance, for example a microwave cooking appliance or microwave oven, in particular a pyrolysis-capable microwave oven or for example a conventional oven, wherein the guide device comprises a fixed rail which can be assigned to the side wall and a pull-out rail which can be coupled to the sliding element and which is displaceable relative to the fixed rail, wherein rollers are provided between the fixed rail and the pull-out rail for displaceable guidance of the rails relative to one another.The essence of the invention is that both the fixed rail and the pull-out rail have a base section, to which side sections are connected on the same side, at opposite ends of the base section in a cross-section perpendicular to a longitudinal extent of the rails, which side sections extend away from the base section and thus form the fixed rail and the pull-out rail, wherein on an inner side of the side sections of the rails the rollers roll along a longitudinal extent of the side sections to form a displaceable guide, wherein the rails are nested with rollers in between in such a way that a side section of one rail overlaps a side section of the other rail transversely to a longitudinal extent of the rails and wherein each rail has an outer and an inner side section. Through this type of nesting of e.g.Fixed rail and pull-out rail International patent application Applicant: Grass GmbH Our reference: G 9680-PC -3– the interior of the guide device, for example guide rollers or another included pull-out mechanism, can be shielded from microwave radiation from an external microwave source. In addition, the type of nesting in the cross-section of the rails, viewed in the installed position in a vertical extension, advantageously creates a particularly compact structure which nevertheless allows comparatively large, reliable rollers to be installed between the nested rails. The rails preferably each have a C-profile when viewed in cross-section. However, another shape is also conceivable, in particular for example a U-profile, so that for example the fixed rail and pull-out rail are nested as a U-profile according to the invention.In addition, the rails are preferably designed identically in their extension from one side section to the opposite side section, as well as, for example, with regard to an extension perpendicular thereto from the base section to the respective longitudinal end edge of the side sections, which preferably extend identically laterally along the base section for one rail. The base section is, for example, flat. Advantageously, in an intended installation position of the guide device, the respective base section is aligned vertically. For example, the base sections of the rails lie opposite one another in the assembled state and are, for example, both aligned vertically, in particular parallel, and in particular the base sections are exactly perpendicular in the installed position. In a particularly advantageous embodiment of the invention, two rollers are arranged on the base section of the rails, each via a roller axis.International patent application Applicant: Grass GmbH Our reference: G 9680-PC -4– The roller axes are preferably provided with a sliding coating and / or with a sliding varnish coating. The roller axes preferably extend perpendicular to the respective base section, which is in particular flat. The roller axes are, for example, firmly fixed to the base section, for example pressed in, riveted or welded in. In a further advantageous embodiment of the invention, the roller axes of the rollers on a rail are offset when viewed in the longitudinal direction of the rail. The roller axes of the rollers on a rail accordingly have different vertical distances to a longitudinal axis of the rail. Or to put it another way, when viewed in the longitudinal direction, the roller axes and thus the rollers are preferably not in a line, but offset in height.This makes it possible for the rollers, which for example have a smaller diameter than the furthest vertical distance between the side sections, to still rest on the inside of the side sections, with one roller on one side section of a rail and the other roller on the opposite section of the same rail. In this way, the rail with the rollers running on the inside, which are mounted on the other rail, is guided in particular tautly to the other rail on the side sections via the rollers. International patent application Applicant: Grass GmbH Our reference: G 9680-PC -5– This rail, which is guided in particular tautly, for example, also has corresponding rollers which rest and roll on the side sections of the other rail in the same way, due to a particularly comparable positioning of the rollers with different vertical distances to the longitudinal axis of the rail.It is further preferred that the material of the rollers comprises, for example, sintered bronze and / or graphite. This choice of material enables self-lubrication of the rollers and thus smooth, low-noise rolling. In a further preferred embodiment of the invention, the roller axes of the rollers of the fixed rail are offset perpendicularly to the roller axes of the rollers of the pull-out rail, viewed in the longitudinal direction of the rail. Perpendicular to the longitudinal direction of the rails, for example, the roller axes of the rollers of the fixed rail are offset towards an upper section at the base section, wherein the roller axes of the pull-out rail are offset towards a lower section at the base section perpendicular to the longitudinal direction. It is also preferred if the rollers of a rail project beyond the outer contour of the rail, which is defined by the side section, via a cutout in a side section.This measure makes it possible for a roller of the rail to which the roller is attached to reach a side section of the other rail, which overlaps on the outside a side section of the rail to which the roller is attached, in order to roll thereon. Viewed in the installed position, a cutout is preferably provided in an inner upper side section of a rail, with a second cutout with the projecting rollers of the other rail being configured on the inner lower side section of the other rail.In this way, the rails, which are nested according to the invention and have overlapping side sections with the rollers rolling thereon, can be guided in a defined manner over all extension positions until, in a fully extended position of the extension rail in relation to the fixed rail, the rollers of one rail move as close as possible to the rollers of the other rail. The rollers of one rail are preferably guided taut in the side sections of the other rail, in particular with existing pre-tension for rolling, and vice versa, this preferably applies to the other rail. Furthermore, it is advantageous if the rollers of one rail are arranged in the end region of the respective rail. Preferably, the rollers of one rail, for example the fixed rail, and the rollers of the extension rail are each arranged in the end region of the rails. In this way, maximum extension of the extension rail can be achieved. This state is, for example,achieved when the rollers of one rail move towards the rollers of the other rail, which are all arranged in the end region. International patent application Applicant: Grass GmbH Our reference: G 9680-PC -7– It is also advantageous if the rollers of one rail are arranged off-center with respect to a longitudinal center axis of the rail. The eccentricity is particularly adapted, depending on the diameter of the rollers, to ensure that one roller can roll on a side section of the other rail, specifically in such a way that one roller rolls on one side section and the other roller rolls on the other side section. It is also preferred if the side sections are channel-shaped.A channel-shaped side section extending in the longitudinal direction of the rail enables, for example, secure guidance of the rollers, in particular with respect to lateral offset, in particular perpendicular to the longitudinal extent of the rails and / or perpendicular to the vertical extent of the rails. This applies in particular when the rollers have an outer shape which, viewed in cross-section, corresponds to the channel shape on their inner surface, on which the guide roller rolls, at least in sections, preferably completely in a contact area. Furthermore, the roller axes are preferably anchored in the base section of the rails, for example pressed or welded, or riveted. In a further essential aspect of the invention, a piece of furniture or kitchen appliance is equipped with two opposing guide devices according to one of the above embodiments.International patent application Applicant: Grass GmbH Reference: G 9680-PC -8– In particular, a guide device according to the invention is used in a microwave cooking appliance, for example, a microwave oven. For example, a food carrier can be stored inside the microwave oven using the guide devices according to the invention, which can be pulled out like a drawer when the microwave oven is opened, for example. Drawings: Several exemplary embodiments of the invention are explained in more detail below with reference to the drawings, indicating further advantages and details.They show: Figure 1 in a schematic, perspective view of a microwave oven with guide devices according to the invention for the guided movement of a food carrier, Figure 2 in a front view of the basic arrangement of rails of a guide device, Figure 3 in a three-dimensional representation of a rail with guide rollers arranged on it, Figure 4 the rail according to Figure 3 in a plane cut through the roller axis of the first guide roller, Figure 5 an end view of a guide device with a fixed and a pull-out rail, International patent application Applicant: Grass GmbH Our reference: G 9680-PC -9– Figure 6 the guide device according to Figure 5 in a perspective view, Figure 7 a guide device in a fully extended state, Figure 8 the guide device according to Figure 7 in a fully pushed-together state.Description of the exemplary embodiments Figure 1 shows a microwave oven 1 with opposing guide devices 2, 3 according to the invention in an extended state. A food carrier 6 is slidably arranged on the pull-out rails 4, 5. The pull-out rails are slidable on fixed rails 7, 8. The fixed rails 7, 8 are present, for example, on side walls 9, 10 or on a holding grid on the side wall of an interior 11 of the microwave oven 1, for example fixed or height-adjustable. The structure of a guide device with regard to the arrangement of rails 12, 13 is shown in a front view in Figure 2. For example, the rail 12 is a fixed rail and the rail 13 is a pull-out rail. The rail 13 has, for example, an anchoring element 14 for a food carrier.If the rail 12 is a fixed rail, its base section 15 is, for example, attached to the side wall of an International patent application Applicant: Grass GmbH Our reference: G 9680-PC -. 10 –Microwave oven mounted. From the base section 15, side sections 16, 17 protrude on one side towards the other rail 13, which then forms a pull-out rail. The rail 13 also has a base section 18, from which side sections 19, 20 protrude on one side towards the rail 12. The rails 12, 13 are nested in one another in such a way that the lowest side section 16 of the rail 12 overlaps the side section 20 of the rail 13 on the underside, with its uppermost side section 19 overlapping the side section 17 of the rail 12 on the top. In this way, a space is created in which guide rollers can be accommodated, and which, at the same time, due to the type of nested arrangement, prevents microwaves radiating in from the outside from penetrating the nesting. This arrangement thus makes it possible, for example, toGuide rollers in a "nested" space 21 shielded from microwaves in order to avoid unwanted parasitic effects. Figures 3 and 4 show a rail 22 with guide rollers 23, 24 arranged thereon. The guide rollers are rotatably mounted, for example, on roller axles 25, 26. The roller axles 25, 26 are firmly mounted in a base section 27, for example, pressed in as indicated in the sectional view in Figure 4. The guide rollers 23, 24 advantageously roll easily and silently on the roller axles 25, 26, for example with the aid of a lubricating medium. The rail 22 has a notch 28, as can be seen in Figures 3 and 4. This is because in particular a guide roller, for example the guide roller 24, projects beyond an outer edge 29 of a side section 30 of the rail 22, which adjoins the base section 27. International patent application Applicant: Grass GmbH Our reference: G 9680-PC -. 11–This allows the guide roller 24 to reach a side section 31 of another rail 32, which rail is, for example, a pull-out rail, which side section 30 overlaps the side section 30, and to roll on an inner side of this side section 31 (see Figure 6). The roller axis 26 for the roller 23, however, is arranged lower than the roller axis 25 for the guide roller 24, viewed over a height of the rail 22, so that the guide roller 23 does not roll on the side section 31 like the guide roller 24, but rather on the opposite side section 33 of the rail 32. The roller axes 25, 26 are preferably arranged offset perpendicular to a longitudinal extent of the rail 22 on the base section 27, so that the guide rollers 23, 24 preferably roll tautly within a clear width of the rail 32 on the respective side sections 30, 33 on the inside, thus achieving well-defined guidance of the rail 32 in relation to the rail 22.Figure 6, for example, shows a perspective front view, whereby Figure 5 shows a rear view of the rail arrangement from Figure 6. In Figure 5 it can be seen that the rail 22, which according to Figure 6 provides guidance for the rail 32 in the front area via the guide rollers 23, 24, is now in turn guided via guide rollers 34, 35 which are arranged on a base section 36 via roller axles 37, 38. The guide roller 34 rolls on an inner side 39 of the side section 30 of the rail 22, whereby the guide roller International patent application Applicant: Grass GmbH Our reference: G 9680-PC -. 12 –35, of which only the portion not overlapped by the guide roller 34 is visible in Figure 5, rolls over the roller axes 38, of which likewise only the portion not overlapped by the roller axes 37 is visible, on an inner side 40 of a side section 41 of the rail 22. The roller axes 38 are mounted on the base section 36 of the rail 32; for example, the roller axes 38 are fixedly mounted, for example, pressed into the base section 36. This defines the guidance of the rail 22 with respect to the rail 32 in the opposite end region of the rail arrangement in Figure 6. To enable the guide roller 35 to reach the side section 41 of the rail 22, the rail 32 is provided with a notch 42 in a mounting area of ​​the guide rollers 34, 35, as in the opposite end region of the rail 22, corresponding to the notch 28.Figures 7 and 8 show a guide device 45 in an extended, namely fully extended, state in Figure 7 and in a pushed-together, namely fully pushed-together state in Figure 8. As explained above, the rail 32 can be considered, for example, as a pull-out rail, with an anchoring element 14 and a further anchoring element or stop element 44 for a food support, whereas the rail 22 represents the fixed rail, which is designed, for example, for permanent mounting on a side wall of the interior of a microwave oven or with fastening means on a holding grid on a side wall. International patent application Applicant: Grass GmbH Our reference: G 9680-PC -. 13 –The rails shown in Figures 7 and 8 are transparent to reveal the guide rollers 23, 24, and 34, 35, respectively. In Figure 7, the guide rollers are fully retracted, at their maximum extension. In contrast, in Figure 8, the rails 32, 22 are retracted, thus representing the position of a food carrier inserted into a microwave oven, for example.

[0002] International patent application Applicant: Grass GmbH Our reference: G 9680-PC - 14 – 1 Microwave oven 36 Base section 2 Guide device 37 Roller axis 3 Guide device 38 Roller axis 4 Pull-out rail 39 Inside 5 Pull-out rail 40 Inside 6 Food support 41 Side section 7 Fixed rail 42 Notch 8 Fixed rail 43 Guide device 9 Side wall 44 Stop 10 Side wall 45 Guide device 11 Interior 12 Rail 13 Rail 14 Anchoring element 15 Base section 16 Side section 17 Side section 18 Base section 19 Side section 20 Side section 21 Space 22 Rail 23 Guide roller 24 Guide roller 25 Roller axis 26 Roller axis 27 Base section 28 Notch 29 Outer edge 30 Side section 31 Side section 32 Rail 33 Side section 34 Guide roller 35 Guide roller

Claims

International patent application Applicant: Grass GmbH Our reference: G 9680-PC -1– Claims 1. Guide device (2, 3, 43, 45) for the displaceable guidance of a sliding element (6) and for arrangement on a side wall (9, 10) in the interior of a piece of furniture or a kitchen appliance, wherein the guide device (2, 3, 43, 45) comprises a fixed rail which can be assigned to the side wall and a pull-out rail which can be coupled to the sliding element and which is displaceable relative to the fixed rail, wherein between the fixed rail and the pull-out rail rollers (23, 24, 34, 35) are provided for a displaceable guidance of the rails relative to one another, characterized in that both the fixed rail and the pull-out rail have a base section (15, 18, 27, 36) to which on the same side, at opposite ends of the base section, in a cross section perpendicular to a longitudinal extent of the rails, laterally projecting from the Basic section (15, 18, 27,36) extending side sections (16, 17, 19, 20, 30, 31, 33, 41) and thus form the fixed rail and the pull-out rail, wherein on an inner side of the side sections (16, 17, 19, 20, 30, 31, 33, 41) of the rails, the rollers (23, 24, 34, 35) roll along a longitudinal extent of the side sections (16, 17, 19, 20, 30, 31, 33, 41) for displaceable guidance, wherein the rails are nested with rollers in between in such a way that a side section (19, 20, 31, 33) of one rail connects a side section (16, 17, 30, 41) of the other rail transversely to a longitudinal extent of the Rails overlap, and each rail has an outer and an inner side section.

2. Guide device according to claim 1, characterized in that two rollers (23, 24, 34, 35) are arranged on the base section (27, 36) of the rails, each via a roller axis (25, 26, 37, 38). International patent application Applicant: Grass GmbH Our reference: G 9680-PC -2– 3. Guide device according to one of the preceding claims, characterized in that the roller axes (25, 26, 37, 38) of the rollers (23, 24, 34, 35) on a rail are offset, viewed in the longitudinal direction of the rail.

4. Guide device according to one of the preceding claims, characterized in that the roller axes (25, 26) of the rollers of the fixed rail are offset from the roller axes (37, 38) of the rollers (34, 35) of the pull-out rail, viewed in the longitudinal direction of the rail.

5. Guide device according to one of the preceding claims, characterized in that the rollers of a rail project beyond the outer contour of the rail, which is defined by the side section, via a cutout in a side section. 6.Guide device according to one of the preceding claims, characterized in that the rollers (23, 24, 34, 35) of a rail are arranged in the end region of the rail.

7. Guide device according to one of the preceding claims, characterized in that the rollers (23, 24, 34, 35) of a rail are arranged off-center with respect to a longitudinal center axis of the rail.

8. Guide device according to one of the preceding claims, characterized in that the side sections (16, 17, 19, 20, 30, 31, 33, 41) are groove-shaped. International patent application Applicant: Grass GmbH Our reference: G 9680-PC -3– 9. A guide device according to one of the preceding claims, characterized in that the roller axes (25, 26, 37, 38) are anchored in the base section (27, 36) of the rails.

10. A piece of furniture or kitchen appliance with two opposing guide devices according to one of the preceding claims.

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