Guiding device and furniture or kitchen appliance with two opposite guiding devices

Abstract

The invention relates to a guide device (2, 3, 43, 45) for movably guiding a sliding element (6) and for arranging on a side wall (9, 10) inside a piece of furniture or kitchen appliance, the guide device (2, 3, 43, 45) comprising a fixed guide rail associated with the side wall and a telescopic guide rail which can be coupled to the sliding element and which can be moved relative to the fixed guide rail, rollers (23, 24, 34, 35) being arranged between the fixed guide rail and the telescopic guide rail, the guide rails are movably guided relative to each other. Furthermore, the fixed rail and the telescopic rail each have a base (15, 18, 27, 36) on which side portions (16, 17, 19, 20, 30, 31, 33, 41) are joined at opposite ends of the base on the same side, which side portions project laterally when viewed in a cross-section perpendicular to the longitudinal extension of the rail and extend away from the base.

Description

BACKGROUND

[0001] Devices for movably guiding movable furniture parts, in particular for kitchen appliances such as ovens or microwave ovens, are known in various forms.

[0002] German utility model DE 20 2022 100 393 U1 discloses a microwave cooking appliance having a guide rail extension device with a first guide rail (or inner guide rail) and a second guide rail (or outer guide rail) made of electrically conductive material, which is movable relative to the first guide rail (or inner guide rail) along a longitudinal axis. The purpose is to shield the interior of the guide rail extension device from microwave radiation, in particular from the direction of the microwave source. SUMMARY

[0003] It is an object of the present application to provide an alternative guide device for movably guiding a sliding element, in particular for use in a microwave oven or microwave oven.

[0004] This object is achieved by the features of the independent claims.

[0005] Advantageous and expedient embodiments, variants and further improvements of the application are described in the dependent claims.

[0006] The application is based on a guide device for movably guiding a sliding element and for arrangement on a side wall inside a piece of furniture or a kitchen appliance, such as a microwave cooking appliance or a microwave oven, in particular a pyrolytic microwave oven, or for example a conventional oven, wherein the guide device comprises a stationary guide rail belonging to the side wall and a telescopic guide rail movable relative to the stationary guide rail, which can be coupled with the sliding element, wherein between the stationary guide rail and the telescopic guide rail rollers are provided for movably guiding the guide rails relative to one another.

[0007] The core of the invention now consists in that the stationary rail and the telescopic rail each have a base, on which, on the same side, at opposite ends of the base, side portions are adjoined, which laterally protrude in a cross section perpendicular to the longitudinal extension of the rail and extend away from the base, thereby forming the stationary rail and the telescopic rail, wherein, on the inside of the side portions of the rails, rollers roll along the longitudinal extension of the side portions for the movable guidance, wherein the rails are nested into one another with the rollers located therebetween, such that the side portions of one rail overlap the side portions of the other rail transversely to the longitudinal extension of the rails, and wherein each rail has an outer side portion and an inner side portion. By this nesting of the stationary rail and the telescopic rail, for example, the interior of the guiding device, for example the guide rollers or other telescopic mechanisms, can be shielded from microwave radiation from external microwave sources. Furthermore, advantageously by this nesting, a particularly compact construction is provided in the cross section of the rails, which still allows a comparatively large and reliable roller between the mutually nested rails, viewed along the height extension in the installed position.

[0008] The rails preferably each have a C-shaped cross section. However, other shapes are also conceivable, in particular, for example, a U-shape, so that, for example, according to the invention, the stationary rail and the telescopic rail are correspondingly nested into one another U-shapedly.

[0009] Furthermore, the extension of the rails from one side portion to the opposite side portion is preferably designed identically, for example, also the extension perpendicular thereto from the base to the respective longitudinal end edge of the side portions, which preferably extend identically for the rails next to the base. The base is designed, for example, flat. Advantageously, in the intended installation position of the guiding device, the respective base is oriented vertically. For example, the bases of the rails are opposite one another in the installed state and both are oriented vertically, in particular, are placed parallel, in particular, in the installation position, the bases are oriented completely vertically.

[0010] In a particularly advantageous design of the invention, on the base of the rails, two rollers are each provided by means of a roller axle.

[0011] The roller axle is preferably provided with a sliding coating and / or a sliding lacquer coating.

[0012] The roller axle is preferably extended perpendicular to the respective, in particular, flat base. For example, the roller axle is fixed firmly on the base, for example, by means of press-in, riveting or welding.

[0013] In another advantageous design of the invention, the roller axles of the rollers are staggered on the rails, viewed in the longitudinal direction of the rails.

[0014] Therefore, the roller axes of the rollers on the guide rail have different vertical distances from the longitudinal axis of the guide rail. Or in other words, viewed longitudinally, these roller axes and thus these rollers are preferably not in a straight line, but are offset in height. This allows rollers, for example, with a diameter smaller than the maximum vertical distance between the sides, to still abut against the inner surface of the sides; specifically, one roller abuts against one side of a guide rail, and another roller abuts against the opposite part of the same guide rail.

[0015] In this way, the guide rail with rollers that roll inside and are mounted on another guide rail is guided particularly closely to the other guide rail on the side by the rollers.

[0016] This guide rail, which is particularly, for example, closely guided, also has corresponding rollers that abut against the side of another guide rail in the same way and roll at different vertical distances from the longitudinal axis of the guide rail by means of particularly similar positioning of these rollers.

[0017] Furthermore, preferably, the material of the roller includes, for example, sintered bronze and / or graphite.

[0018] This material selection enables the rollers to become self-lubricating, resulting in smooth and quiet rolling.

[0019] In another preferred embodiment of the invention, when viewed in the longitudinal direction of the guide rail, the roller axis of the fixed guide rail roller is perpendicularly offset from the roller axis of the telescopic guide rail.

[0020] For example, perpendicular to the longitudinal direction of the guide rail, the roller shaft of the fixed guide rail roller is offset upwards at the base; while the roller shaft of the telescopic guide rail roller is offset downwards perpendicular to the longitudinal direction.

[0021] Furthermore, preferably, a roller of a guide rail protrudes beyond the outer contour of the guide rail defined by the side through a notch in the side.

[0022] This measure enables the rollers to be fixed on a guide rail, and the rollers of that guide rail can reach the side of another guide rail, which overlaps on the outside of the side of the guide rail on which the rollers are fixed.

[0023] When viewed from the installation position, preferably, a notch is provided on the upper inner side of one guide rail, and a second notch is provided on the lower inner side of the other guide rail, which has a protruding roller of the other guide rail.

[0024] This allows the guide rails, which engage with each other according to the invention, to be guided as prescribed through their fully extended positions with overlapping sides (with rollers rolling thereon), until, in the fully extended position of the telescopic guide rail relative to the fixed guide rail, the rollers of one guide rail are maximally close to the rollers of the other guide rail. The rollers of one guide rail are preferably guided tightly within the side of the other guide rail with a pre-existing pre-stress for rolling, and conversely, this is preferably applied to the other guide rail.

[0025] Furthermore, it is advantageous that the rollers of the guide rail are arranged in the end area of ​​the corresponding guide rail.

[0026] Preferably, the rollers of one guide rail (e.g., a fixed guide rail) and the rollers of the telescopic guide rail are both arranged in the end region of the guide rail. In this way, the maximum extension of the telescopic guide rail can be achieved.

[0027] For example, this state can be achieved when the roller of one guide rail is close to the roller of another guide rail, with all rollers arranged in the end area.

[0028] Furthermore, it is advantageous that the rollers of one guide rail are eccentrically arranged relative to the longitudinal central axis of the guide rail. This eccentricity is specifically matched according to the diameter of the rollers, so that each roller can roll on the side of the other guide rail; more precisely, one roller rolls on one side and the other roller rolls on the other side.

[0029] Furthermore, preferably, the side is designed as a groove. The grooved side extending longitudinally along the guide rail can, for example, reliably guide the rollers and, in particular, prevent lateral misalignment, especially misalignment perpendicular to the longitudinal direction of the guide rail and / or perpendicular to the height direction of the guide rail.

[0030] The above applies if the cross-sectional shape of the roller, when viewed from the inner surface of the groove, corresponds at least partially (preferably completely) to the shape of the groove in the contact area, guiding the roller to roll on the inner surface.

[0031] Furthermore, preferably, the roller shaft is fixed in the base of the guide rail, for example by pressing, welding or riveting.

[0032] Another important aspect of the invention is that, according to one of the above embodiments, the furniture or kitchen appliance is equipped with two opposing guiding devices.

[0033] In particular, the guiding device according to the invention is applied in microwave cooking appliances, such as microwave ovens. For example, a food tray can be placed inside a microwave oven using the guiding device according to the invention, which can extend like a drawer, for example, when the microwave oven is opened. Attached Figure Description

[0034] The following description, with the aid of the accompanying drawings, will provide a more detailed account of several embodiments of the present invention, as well as introduce other advantages and details.

[0035] Figure 1 A microwave oven is shown in a schematic perspective view, which has a guide device according to the invention for guiding the movement of a food tray;

[0036] Figure 2 A front view of the basic arrangement of the guide rails for the guiding device;

[0037] Figure 3 A three-dimensional view of a guide rail with guide rollers arranged on it;

[0038] Figure 4 for Figure 3 The guide rail shown is a cross-sectional view on the plane passing through the roller shaft of the first guide roller;

[0039] Figure 5 An end view of a guide device with fixed and telescopic guide rails;

[0040] Figure 6 According to Figure 5 A three-dimensional view of the guiding device;

[0041] Figure 7 This shows the fully extended state of the guide device;

[0042] Figure 8 Showing according to Figure 7 The guide device is in a fully retracted state. Detailed Implementation

[0043] Figure 1 A microwave oven 1 in an extended position according to the invention is shown, having opposing guide devices 2 and 3 according to the invention. A food tray 6 is movably mounted on telescopic guide rails 4 and 5. The telescopic guide rails are movable on fixed guide rails 7 and 8. The fixed guide rails 7 and 8 are located, for example, on the side walls 9 and 10 inside the microwave oven 11, or on retaining grids on the side walls, arranged, for example, fixedly or height-adjustably.

[0044] Figure 2 The previous view shows the structure of the guiding device with respect to the arrangement of guide rails 12 and 13. For example, guide rail 12 is a fixed guide rail, and guide rail 13 is a telescopic guide rail. Guide rail 13 has, for example, a fixing element 14 for a food tray.

[0045] If guide rail 12 is a fixed guide rail, its base 15 is mounted, for example, on the side wall of a microwave oven. Side portions 16 and 17 extend from the base 15 toward the other guide rail 13, which serves as a telescopic guide rail. Guide rail 13 also has a base 18, and side portions 19 and 20 extend from the base 18 toward the guide rail 12. Guide rails 12 and 13 are nested together such that the lowermost side portion 16 of guide rail 12 overlaps with the lower side of the side portion 20 of guide rail 13, while the uppermost side portion 19 of guide rail 13 overlaps with the upper side of the side portion 17 of guide rail 12.

[0046] This arrangement provides space for the guide rollers, and the nested arrangement effectively prevents externally incident microwaves from penetrating the nested structure.

[0047] This arrangement, for example, shields the guide rollers within the "nested" space 21 from microwave interference, so that undesirable parasitic effects are not caused there.

[0048] Figure 3 and Figure 4 A guide rail 22 is shown, on which guide rollers 23 and 24 are arranged. These guide rollers are rotatably mounted, for example, on roller shafts 25 and 26. Roller shafts 25 and 26 are fixedly mounted in a base 27, for example, as shown. Figure 4 As shown in the cross-sectional view, they are pressed into the base. The guide rollers 23 and 24 roll easily and quietly on the roller shafts 25 and 26, for example with the aid of a lubricating medium.

[0049] like Figure 3 and Figure 4 As shown, the guide rail 22 has a groove 28. This is because, in particular, the guide roller (e.g., guide roller 24) protrudes beyond the outer edge 29 of the side portion 30 of the guide rail 22 adjacent to the base 27.

[0050] In this way, the guide roller 24 can reach the side 31 of another guide rail 32 (which is, for example, a telescopic guide rail) that overlaps with the side 30, and roll inside the side 31 (see...). Figure 6 ).

[0051] Viewed along the height of the guide rail 22, the roller shaft 26 of the roller 23 is arranged lower than the roller shaft 25 of the guide roller 24, so that the guide roller 23 does not roll on the side 31 like the guide roller 24, but rolls on the opposite side 33 of the guide rail 32.

[0052] The roller shafts 25 and 26 are preferably arranged staggered on the base 27 with their longitudinal extensions perpendicular to the guide rail 22, so that the guide rollers 23 and 24 preferably roll closely inside the corresponding sides 30 and 33 within the net width of the guide rail 32, thereby achieving good guidance of the guide rail 32 relative to the guide rail 22.

[0053] Figure 6 For example, a stereoscopic front view is shown, while Figure 5 It shows Figure 6 Rear view of the guide rail arrangement.

[0054] exist Figure 5 As shown in the figure, according to Figure 6 The guide rail 22, which provides guidance to the guide rail 32 in the front region via guide rollers 23 and 24, is now itself guided by guide rollers 34 and 35, which are arranged on the base 36 via roller shafts 37 and 38.

[0055] Guide roller 34 rolls on the inner surface 39 of the side portion 30 of guide rail 22, while guide roller 35 rolls on the inner surface 40 of the side portion 41 of guide rail 22 via roller shaft 38. Figure 5 Only the portion of guide roller 35 that does not overlap with guide roller 34 is visible, and similarly, only the portion of roller shaft 38 that does not overlap with roller shaft 37 is visible. Roller shaft 38 is mounted on the base 36 of guide rail 32, for example, by being fixedly mounted, for example, by pressing it into the base 36.

[0056] Therefore Figure 6 The guide rail arrangement in the middle specifies the guidance of guide rail 22 relative to guide rail 32 in the opposite end region.

[0057] In order for the guide rollers 35 to reach the side 41 of the guide rail 22, the guide rail 32 is provided with a groove 42 in the mounting area of ​​the guide rollers 34 and 35, corresponding to the groove 28 in the opposite end area of ​​the guide rail 22.

[0058] Figure 7 The guide device 45 is shown in an extended, or more precisely, fully extended state. Figure 8 It shows that it is in a contracted state, or more precisely, a fully contracted state.

[0059] As described above, guide rail 32 can be considered, for example, as a telescopic guide rail with fixing element 14 and additional fixing element or stop element 44 for food tray; while guide rail 22 represents a fixed guide rail, which is designed, for example, to be fixed to the inner wall of the microwave oven cavity, or to a retaining grille on the side wall by fasteners.

[0060] according to Figure 7 and Figure 8 The guide rails are shown transparently, so guide rollers 23, 24 or 34, 35 can be seen.

[0061] exist Figure 7 In the middle, the guide roller is fully retracted in its maximum extended state. In contrast, according to Figure 8The guide rails 32 and 22 are nested together, thus creating a state in which the food tray is pushed into the microwave oven, for example.

[0062] List of reference numerals

[0063] 1 microwave oven

[0064] 2. Guiding device

[0065] 3. Guiding device

[0066] 4 Telescopic guide rails

[0067] 5 Telescopic guide rails

[0068] 6 food trays

[0069] 7 Fixed guide rails

[0070] 8 fixed guide rails

[0071] 9 sidewalls

[0072] 10 sidewalls

[0073] 11. Inner cavity

[0074] 12 guide rails

[0075] 13 guide rails

[0076] 14 Fixing Components

[0077] 15 base

[0078] 16 sides

[0079] 17 Side

[0080] 18 bases

[0081] 19 Side

[0082] 20 Side

[0083] 21 chambers

[0084] 22 guide rails

[0085] 23 guide rollers

[0086] 24 guide rollers

[0087] 25 roller shaft

[0088] 26 roller shaft

[0089] 27 base

[0090] 28 grooves

[0091] 29 outer edge

[0092] 30 side

[0093] 31 Side

[0094] 32 guide rails

[0095] 33 Side

[0096] 34 guide rollers

[0097] 35 guide rollers

[0098] 36 bases

[0099] 37 roller shaft

[0100] 38 roller shaft

[0101] 39 inner side

[0102] 40 inner side

[0103] 41 Side

[0104] 42 grooves

[0105] 43 Guiding Device

[0106] 44 stops

[0107] 45. Guiding device.

Claims

1. A guiding device (2, 3, 43, 45) for movably guiding a sliding element (6), and for being arranged on a side wall (9, 10) inside furniture or kitchen appliances, wherein, The guiding device (2, 3, 43, 45) includes a fixed guide rail that can be assigned to the sidewall and a telescopic guide rail that can be moved relative to the fixed guide rail and coupled to the sliding element. Rollers (23, 24, 34, 35) are provided between the fixed guide rail and the telescopic guide rail for guiding the guide rails to be movable relative to each other. The fixed guide rail and the telescopic guide rail are characterized in that both have a base (15, 18, 27, 36), and on the same side of the base (15, 18, 27, 36) are connected to side portions (16, 17, 19, 20, 30, 31, 33, 41) at opposite ends of the base. The side portions protrude laterally in cross-section perpendicular to the longitudinal extension of the guide rail and extend away from the base (15, 18, 27, 36), thereby forming the fixed guide rail and the telescopic guide rail. Inside the sides of 6, 17, 19, 20, 30, 31, 33, 41, the rollers (23, 24, 34, 35) roll along the longitudinal extension of the sides (16, 17, 19, 20, 30, 31, 33, 41) for movable guidance, wherein the guide rails and the rollers therebetween are nested such that the side of one guide rail (19, 20, 31, 33) overlaps with the side of another guide rail (16, 17, 30, 41) transversely to the longitudinal extension of the guide rail, and wherein each guide rail has an outer side and an inner side.

2. The guiding device according to claim 1, characterized in that, On the base (27, 36) of the guide rail, two rollers (23, 24, 34, 35) are respectively provided via roller shafts (25, 26, 37, 38).

3. The guiding device according to any one of the preceding claims, characterized in that, Viewed along the longitudinal direction of the guide rail, the roller shafts (25, 26, 37, 38) of the rollers (23, 24, 34, 35) are offset on the guide rail.

4. The guiding device according to any one of the preceding claims, characterized in that, Viewed in the longitudinal direction of the guide rail, the roller shafts (25, 26) of the rollers of the fixed guide rail are offset from the roller shafts (37, 38) of the rollers (34, 35) of the telescopic guide rail.

5. The guiding device according to any one of the preceding claims, characterized in that, The rollers of the guide rail protrude beyond the outer contour of the guide rail defined by the side through a notch in the side.

6. The guiding device according to any one of the preceding claims, characterized in that, The rollers (23, 24, 34, 35) of the guide rail are arranged in the end area of ​​the guide rail.

7. The guiding device according to any one of the preceding claims, characterized in that, The rollers (23, 24, 34, 35) of the guide rail are arranged eccentrically relative to the longitudinal central axis of the guide rail.

8. The guiding device according to any one of the preceding claims, characterized in that, The sides (16, 17, 19, 20, 30, 31, 33, 41) are designed in a groove shape.

9. The guiding device according to any one of the preceding claims, characterized in that, The roller shafts (25, 26, 37, 38) are fixed in the base (27, 36) of the guide rail.

10. A piece of furniture or kitchen appliance having two opposing guides according to any one of the preceding claims.

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