Guide device

Abstract

In the case of a guide device for guiding a pull-out mechanism, having at least one guide unit (18) which has a basic-structure rail (19) and at least one pull-out rail (20), which is mounted displaceably relative to the basic-structure rail (19) and can be coupled to the pull-out mechanism, wherein the basic-structure rail (19) has a first retaining element (21a), arranged on its front region, and a second retaining element (21b), arranged on its rear region, wherein the retaining elements (21a, 21b) serve for fastening the basic-structure rail (19) on two grid bars (13b, 13c) of a basic-structure-mounted grid structure (13), the grid bars being spaced apart from one another in a height direction (14), the retaining elements (21a, 21b) each have a latching device (22) which, for installation purposes, can be introduced between the two grid bars (13b, 13c) during the course of a latching operation and, in the installed state, engage behind the two grid bars (13b, 13c).

Description

[0001] Guide device

[0002] The invention relates to a guide device for guiding a pull-out, with at least one guide unit which has a carcass rail and at least one pull-out rail which is displaceably mounted relative to the carcass rail and can be coupled to the pull-out, wherein the carcass rail has a first holding element arranged in its front region and a second holding element arranged in its rear region, wherein the holding elements serve to fasten the carcass rail to two grid bars of a carcass-side grid structure which are spaced apart from one another in a vertical direction.

[0003] Guide devices that are attached to the bar arrangements of a piece of furniture or a household appliance, such as an oven, have been known for a long time.

[0004] For example, EP 1 982 122 B1 describes a guide rail which is fastened to horizontally running bars, which are bent at an angle in the end region, of a grid-like side part of an oven. The guide rail is fastened by means of a quick-fastening device which has holding elements, each of which has a clamp-like holding section which partially encompasses the longitudinal extent of the bar. To fasten the guide rail, first the rear holding element is placed on two superimposed cross struts of the grid bar arrangement and then the guide rail is pivoted in, whereby the front holding element also comes into contact with the two cross struts. The front and rear holding elements are designed differently.

[0005] The object of the invention is to create a guide device of the type mentioned at the beginning, with the aid of which a simple, inexpensive and quick fastening of the guide rail to a grid structure of a piece of furniture or a household appliance can be carried out.

[0006] This object is achieved by a guide device having the features of independent claim 1. Further developments of the invention are presented in the subclaims.

[0007] The guide device according to the invention is characterized in that the holding elements each have a locking device which can be inserted between the two grid bars for assembly during a locking process and which engages behind the two grid bars in the assembled state.

[0008] This allows for quick and easy installation of the guide system using the retaining elements. It is not necessary to attach the guide system to the grid structure or grid bar arrangement at one end and then pivot it into place. Instead, the locking function of the retaining elements makes it possible to move the guide rail laterally toward the grid structure and simultaneously attach the two retaining elements to the two grid bars using a fastening movement aligned essentially perpendicular to the longitudinal axis of the grid bars.

[0009] In a further development of the invention, the locking device has two engaging elements that are movable relative to one another for engaging behind an associated grid bar, at least one of which is designed as an elastically deformable locking element.

[0010] Particularly preferably, both engagement elements are designed as elastically deformable locking elements. Alternatively, it would be conceivable for one of the engagement elements to be rigid and the other engagement element to be designed as an elastically deformable locking element.

[0011] Particularly preferably, the at least one locking element, preferably both locking elements, has a hump-shaped curved section which, after passing the associated grid bar, snaps into place behind the grid bar and engages behind it. This prevents the locking element, once engaged, from inadvertently disengaging in the opposite direction of insertion.

[0012] In a further development of the invention, the at least one engaging element is tongue-shaped. The retaining elements are expediently made of metal, in particular steel. The engaging element can therefore be designed as a relatively narrow, tongue-shaped strip of metal. In principle, however, it would also be conceivable to manufacture the retaining elements from plastic.

[0013] In a further development of the invention, the holding elements are each designed as separate components from the associated carcass rail, which are fastened to associated fastening interfaces on the carcass rail by means of fastening means. The holding elements are expediently fastened to the associated fastening interfaces on the carcass rail in a non-detachable manner, i.e. they can only be removed using the application of force. However, it is also conceivable to attach the holding elements detachably to the associated fastening interfaces of the carcass rail by appropriately designing the fastening elements. For example, it is possible to weld the holding elements to the associated fastening interfaces on the carcass rail or to fasten them there permanently by means of a rivet connection. For the detachable variant, snap-in or clip connections are again suitable.

[0014] In a further development of the invention, the holding elements each have a base body from which the engaging elements protrude.

[0015] Particularly preferably, in addition to the locking device, the holding elements each have two holding tongues which are spaced apart from one another in the vertical direction and, in the assembled state, project between the grating bars and which can be bent under plastic deformation for additional fastening of the holding elements to the associated grating bars. This makes it possible to produce a "fixed version" of the guide device from the "detachable version" of the guide device, in which the guide device can be detached from the associated grating bars if necessary. If the holding tongues are therefore plastically deformed, the guide device can no longer be easily detached from the associated grating bars. This requires further plastic deformation of the holding tongues into the starting position.

[0016] In a further development of the invention, the retaining tongues protrude from the base body of the retaining element. Particularly preferably, the retaining elements each have a support element that prevents relative movement of the retaining elements and thus of the carcass rail along the bars.

[0017] In a particularly preferred manner, the support element is designed as an angle piece which, in the assembled state, encompasses at least one angled end region of an associated lattice bar.

[0018] The support element, in particular the angle piece, expediently has a height extension such that support is provided on both grid bars spaced apart from one another in the height direction.

[0019] The invention further relates to a piece of furniture or household appliance with a guide device for guiding a pull-out, which is designed according to one of claims 1 to 12.

[0020] A preferred embodiment of the invention is shown in the drawing and is explained in more detail below. The drawing shows:

[0021] Figure 1 is a perspective view of an oven in which a preferred embodiment of the guide device according to the invention is arranged,

[0022] Figure 2 is a perspective view of a partial section of a preferred embodiment of the guide device according to the invention, showing the front end of the guide device, Figure 3 is a perspective view of the guide device of Figure 2, showing the rear end of the guide device,

[0023] Figure 4 is a perspective view of one of the holding elements used in the guide device according to the invention and

[0024] Figure 5 shows the holding element of Figure 4 in perspective, showing the fixed version after bending the holding tongues.

[0025] Figures 1 to 5 show a preferred embodiment of the guide device 11 according to the invention. The guide device 11 serves to guide a pull-out (not shown) which is movably received in a piece of furniture or a household appliance via the guide device 11. In the example shown, this is a household appliance in the form of an oven 40, which is shown by way of example in Figure 1. It is of course also possible to install the guide device 11 according to the invention in furniture in a pull-out compartment of a furniture body.

[0026] In the example shown, the household appliance, in particular the oven, has mutually facing side walls 41a, 41b, to each of which a grid structure 12 is attached. Thus, a left and a right (not shown) grid structure 12 are provided, which face each other. The grid structure 12 consists of a plurality of grid bars 13.

[0027] The cuboid-shaped oven 40 in the example further has a rear wall 42, opposite which is an oven opening 43 that can be closed by a door or flap (not shown). The oven has a floor 44 and a ceiling wall 45 on the top and bottom. The two side walls 41a, 41b, the rear wall 42, the door or flap, the floor 44, and the ceiling wall 45 define an interior space 46, which could also be referred to as a baking or cooking chamber.

[0028] As shown in particular in Figures 2 and 3, the lattice bars 13 comprise vertical lattice bars 13a, which can also be referred to as vertical bars or vertical struts. In the example shown, the vertical lattice bars 13a therefore run in a height direction 14. As a rule, several, in particular two, vertical lattice bars 13a are provided, arranged one behind the other at a distance in a depth direction 15. Horizontal lattice bars extend between adjacent vertical lattice bars 13a, of which a first horizontal lattice bar 13b and a second horizontal lattice bar 13c form a lattice bar pair. As the combination of Figures 1 and 2 shows in particular, the first and second horizontal lattice bars 13b, 13c are each connected at their ends to the vertical lattice bars 13a, for example by welding them there.

[0029] The lattice bars 13a-c of the lattice structure are generally made of metal, in particular steel material.

[0030] As shown by way of example in Figures 2 and 3, a plurality of pairs of grid bars consisting of first and second horizontal grid bars 13b, 13c are arranged in the vertical direction along the vertical grid bars 13a. The vertical distance between the two horizontal grid bars 13b, 13c of a grid bar pair is smaller than the distance between adjacent grid bar pairs. As further shown in Figures 1 and 2, the horizontal grid bars 13b, 13c each have a base section 16 running in the depth direction 15, to which angled end regions 17a, 17b are connected at one end and the other. The end regions 17a, 17b run essentially perpendicular to the orientation of the base section 16 and are expediently connected to the associated base section 16 via a curved or arcuate section.

[0031] In the example shown, the guide device 11 comprises a plurality of guide units 18, which are assigned in pairs to the left and right side walls 41a, 41b. Furthermore, in the example shown, a plurality of guide unit pairs are arranged one above the other. Of the guide unit pairs, only the left guide units 18 are shown in Figure 1. The left and right guide units are constructed essentially identically to one another, so that the description of one guide unit 18 also applies to the other guide unit.

[0032] The guide units 18 each have a body rail

[0033] 19 and at least one guide rail movably guided on the cabinet rail 19 via guide means, for example guide carriages. It is conceivable that two guide rails are provided, one of which represents a center rail (not shown) and the other a pull-out rail 20. The pull-out rail 20 can be connected to the pull-out by suitable coupling means, for example by means of a snap-in coupling. The combination of cabinet rail 19, center rail and pull-out rail 20 is also referred to as a full extension. However, it is also conceivable that the pull-out rail

[0034] 20 is movably guided directly on the cabinet rail 19 without the interposition of a center rail, which is referred to as partial extension. A key aspect of the invention is the attachment of the cabinet rail 19 to the grid structure 12 of the furniture or household appliance.

[0035] For this purpose, a first holding element 21a is arranged on the body rail 19 in a front area and a second holding element 21b is arranged in the rear area.

[0036] The holding elements 21a, 21b serve to fasten the body rail 19 to the two horizontal bars 13b, 13c of a pair of bars.

[0037] The holding elements 21a, 21b each have a locking device 22 which can be inserted between the two grid bars 13b, 13c for assembly during a locking process and which, in the assembled state, engages behind the two grid bars 13b, 13c.

[0038] As shown in particular in Figures 4 and 5, the holding elements 21a, 21b each have a relatively narrow base body 24 with an upper and a lower edge section 25a, 25b.

[0039] In the following, only a single holding element 21a is described, whereby the description and the function of the described holding element also apply to the other holding element.

[0040] In the example shown, the holding elements 21a, 21b are designed as separate components from the associated carcass rail 19.

[0041] As shown by a combination of Figures 2 and 3, two fastening interfaces 26a, 26b are provided on the carcass rail 19, arranged one behind the other in the longitudinal direction of the carcass rail 19 and in the depth direction 15, of which a first fastening interface 26a is assigned to the front area and a second fastening interface 26b to the rear area of ​​the carcass rail. The holding elements 21a, 21b are fastened to the fastening interfaces 26a, 26b, in particular to a side wall 27 of the carcass rail 19.

[0042] In the example shown, the retaining elements 21a, 21b are made of metal material, in particular steel material. In this case, the two retaining elements 21a, 21b are welded to the side wall 27 of the cabinet rail 19 at the associated fastening interfaces 26a, 26b.

[0043] As already mentioned, the holding element 21a, 21b has a relatively narrow base body 24 with upper and lower edge sections 25a, 25b. The also already mentioned rear engagement elements 23a, 23b of the locking device 22 are arranged on the upper and lower edge sections 25a, 25b of the base body 24 and protrude therefrom, in particular in an oblique orientation.

[0044] In the example shown, the engagement elements 23a, 23b are both designed as elastically deformable locking elements. These locking elements are expediently connected in one piece to the base body 24. For example, the locking elements can be formed simultaneously during the manufacture of the retaining element 21a, 21b by a suitable punching process from a blank of the retaining element 21a, 21b.

[0045] As Figures 4 and 5 show in particular, each locking element has a locking element base section 28 which is in particular connected in one piece to the upper or lower edge section 25a, 25b of the base body. A hump-shaped curved section 29 adjoins the locking element base section 28 in the direction of the free end of the locking element. The humps or curves of the curved section 29 point away from one another in comparison to the upper and lower locking element. A locking recess 30 is formed between the hump-shaped curved section 29 and the locking element base section 28, into which locking recess the associated grid bar 13b, 13c can snap after passing through the hump-shaped curved section 29.

[0046] As shown in particular in Figure 4, the holding element 21a, 21b has, in addition to the locking device 22, two holding tongues 31a, 31b which are spaced apart from one another in the vertical direction and, in the assembled state, project between the grid bars and which can be bent under plastic deformation for the additional fastening of the holding elements 21a, 21b to the associated grid bars 13b, 13c.

[0047] In the example shown, the retaining tongues 31a, 31b are approximately trapezoidal in shape. One of the retaining tongues 31a is assigned to the upper edge section 25a of the base body 24 and projects from there essentially perpendicularly. The other retaining tongue 31b is assigned to the lower edge section 25b and also projects from there essentially perpendicularly. Figure 3 shows a state of the retaining tongues 31a, 31b in which the retaining tongues 31a, 31b are not plastically deformed, which corresponds to a "loose" variant of the retaining elements 21a, 21b. This means that in this state, the carcass rail can be detached again in a relatively simple manner from the associated grid bars 13b, 13c of the grid structure 12.

[0048] Figure 5 shows a variant in which the retaining tongues are plastically deformed, specifically outwards, i.e., the upper retaining tongue 31a is bent upwards and the lower retaining tongue 31b is bent downwards. The plastic deformation or bending of the retaining tongues occurs after the retaining tongues are inserted into the space between the two bars 13b, 13c of a bar pair. The plastic deformation can be achieved relatively easily, for example, by crimping using crimping pliers.

[0049] As shown in particular in Figures 3 and 4, the holding elements each have a support element 32 which prevents a relative movement of the holding elements 21a, 21b and thus of the carcass rail 19 along the bars 13b, 13c.

[0050] In the example shown, the support element 32 is designed as an angle piece which, in the assembled state, encompasses the two end regions 17a, 17b of the horizontal lattice bars 13b, 13c of the lattice bar pair.

[0051] The support element 32 is expediently located at a front end of the base body and has a significantly greater height extension than the base body, whereby the aforementioned support at both end regions 17a, 17b of the associated horizontal lattice bars 13b, 13c is possible.

[0052] To fasten the carcass rail 19 and thus the guide unit 18 to the grid structure 12, the carcass rail 19 is first brought up to a pair of grid bars, the height being determined by selecting a pair of grid bars at the desired height. The side wall 27 of the carcass rail 19 extends essentially perpendicular to the base sections 25a, 25b of the horizontal grid bars 13b, 13c. The holding elements 21a, 21b are initially not in contact with the associated grid bars 13b, 13c. Next, the carcass rail 19 is fastened to the grid structure 12 by means of a fastening device 35 in a width direction of the associated household appliance orOven-oriented fastening movement to the associated horizontal grid bars 13b, 13c, wherein this approach can be carried out simultaneously with both holding elements 21a, 21b, without a specific holding element 21a, 21b first having to come into contact with the grid bars 13b, 13c.

[0053] During this locking process, the two hump-shaped curved sections 29 of the locking elements of the two holding elements 21a, 21b are then introduced into the intermediate space 36 between the two grid bars 13b, 13c lying one above the other in the vertical direction, wherein the locking elements are elastically deformed and pressed towards one another, since the hump-shaped curved sections have a larger dimension in the vertical direction than the intermediate space 36 between the two horizontal grid bars 13b, 13c.

[0054] The two hump-shaped curved sections 29 of a respective holding element 21a, 21b automatically snap back into their starting position after passing the associated horizontal lattice bars, i.e. the base sections 16 of the horizontal lattice bars 13b, 13c, wherein the locking recess 30 located between the hump-shaped curved section 29 and the locking element base section 28 comes into contact with the associated lattice bar 13b, 13c. This means that the resiliently flexible locking elements snap into place on the associated lattice bars 13b, 13c after passing the hump-shaped curved section 29 in the region of the locking recess 30. In this state, the two holding elements 21a, 21b and thus the body rail 19 are secured against unintentional release in a direction opposite to the fastening movement or the locking direction.The body rail can be released from the grid structure 12 by proactively pressing together the two locking elements of the holding element 21a, 21b, whereby the locking elements can snap out of the intermediate space 36 again.

[0055] An essential aspect of the invention is that the locking process can take place simultaneously on both locking elements. Simultaneously with this locking process of the locking elements of the two holding elements 21a, 21b, the support elements 32 bear against one and the other end region 17a, 17b of the horizontal bars 13b, 13c, thereby preventing a relative movement of the carcass rail with respect to the longitudinal axis of the horizontal bars 13b, 13c.

[0056] As is particularly evident from the combination of Figures 2 and 3, the two retaining tongues 31a, 31b penetrate the intermediate space 36 between the two horizontal bars 13b, 13c at the same time as the respective retaining elements 21a, 21b engage.

[0057] The state shown in Figures 2 and 3 corresponds to the state shown in Figure 4, i.e. the "detachable version" in which the retaining tongues 31a, 31b are not plastically deformed. Here, however, the retaining tongues 31a, 31b serve as additional securing or support of the respective retaining elements 21a, 21b and thus of the carcass rail 19 in the vertical direction 14.

[0058] As the combination of Figures 2 and 3 shows, the fixed version shown in Figure 5 can be easily produced from this loose version by bending the retaining tabs 31a, 31b upwards and downwards, whereby they engage behind the two associated grid bars 13b, 13c. In contrast to the two locking tabs, which are elastically deformable, the elastic flexibility of the plastically deformed retaining tabs 31a, 31b does not lead to the disengagement of the retaining elements 21a, 21b. Therefore, this variant is also referred to as the "fixed variant."

Claims

Claims 1. Guide device for guiding a pull-out, with at least one guide unit (18) which has a carcass rail (19) and at least one pull-out rail (20) which is displaceably mounted relative to the carcass rail (19) and can be coupled to the pull-out, wherein the carcass rail (19) has a first holding element (21a) arranged at its front region and a second holding element (21b) arranged at its rear region, wherein the holding elements (21a, 21b) serve to fasten the carcass rail (19) to two grid bars (13b, 13c) of a carcass-side grid structure (13) which are spaced apart from one another in a height direction (14), characterized in that the holding elements (21a, 21b) each have a locking element which can be inserted between the two grid bars (13b, 13c) for assembly during a locking process and which, in the assembled state, engages the two grid bars (13b, 13c) have a locking device (22) engaging behind it.

2. Guide device according to claim 1, characterized in that the locking device (22) has two relatively movable rear engagement elements (23a, 23b) for engaging behind an associated grid bar (13b, 13c), at least one of which is designed as an elastically deformable locking element.

3. Guide device according to claim 2, characterized in that the two engagement elements (23a, 23b) are designed as elastically deformable locking elements are formed.

4. Guide device according to claim 2 or 3, characterized in that the at least one locking element has a hump-shaped curved section (29) which, after passing the associated grating bar (13b, 13c), snaps behind the grating bar (13b, 13c) and engages behind it.

5. Guide device according to one of claims 2 to 4, characterized in that the at least one rear engagement element (23a, 23b) is tongue-shaped.

6. Guide device according to one of the preceding claims, characterized in that the holding elements (21a, 21b) are each designed as separate components from the associated carcass rail (19) which are fastened to associated fastening interfaces (26a, 26b) on the carcass rail (19) by means of fastening means.

7. Guide device according to one of claims 2 to 6, characterized in that the holding elements (21a, 21b) each have a base body (24) from which the engagement elements (23a, 23b) protrude.

8. Guide device according to one of the preceding claims, characterized in that the holding elements (21a, 21b) each have, in addition to the locking device (22), two holding tongues (31a, 31b) which are spaced apart from one another in the vertical direction and, in the assembled state, project between the grid bars (13b, 13c), which can be bent under plastic deformation for the additional fastening of the holding elements (21a, 21b) to the associated grid bars (13b, 13c).

9. Guide device according to claim 7 and 8, characterized in that the retaining tongues (31a, 31b) protrude from the base body (24) of the associated retaining element (21a, 21b).

10. Guide device according to one of the preceding claims, characterized in that the holding elements (21a, 21b) each have a support element (32) preventing a relative movement of the holding elements (21a, 21b) and thus of the carcass rail (19) along the grid bars (13b, 13c).

11. Guide device according to claim 10, characterized in that the support element (32) is designed as an angle piece which, in the assembled state, encompasses at least one angled end region (17a, 17b) of an associated lattice bar (13b, 13c).

12. Guide device according to claim 10 or 11, characterized in that the support element (32), in particular angle piece, has a height extension such that support is provided on both grid bars (13b, 13c) spaced apart from one another in the height direction.

13. Furniture or household appliance, with a guide device (11) for guiding a pull-out, characterized in that the guide device (11) is designed according to one of claims 1 to 12.

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