EP2790549A1

EP2790549A1 - Fastening element and side-rail arrangement

Info

Publication number: EP2790549A1
Application number: EP12809148.5A
Authority: EP
Inventors: Friedrich Meyer; Edgar Frobieter; Matthias KUNSCH
Original assignee: Paul Hettich GmbH and Co KG
Current assignee: Paul Hettich GmbH and Co KG
Priority date: 2011-12-12
Filing date: 2012-12-06
Publication date: 2014-10-22
Anticipated expiration: 2032-12-06
Also published as: WO2013087503A1; EP2790549B1; TR201911228T4; DE102011056304A1

Abstract

A fastening element (10, 10') for arranging a device, preferably a pull-out guide, in or on a domestic appliance, preferably in an oven, on two bars (6, 7, 7') which are parallel substantially in the X direction and are spaced apart from one another in the Z direction, having a first holder (11), which can be arranged on a first bar (7, 7'), and a second holder (20, 20'), which can be arranged on a second bar (6), wherein the second holder (20, 20') is designed as a fixed bearing for accommodating different thicknesses of second bar (6), and the first holder (11) is configured as a movable bearing for compensating for different designs, spacings and/or thicknesses of the two bars (6, 7, 7').

Description

Fastener and side rails

The present invention relates to a fastening element for arranging a device on two bars and a side rail for a household appliance, in particular for an oven.

EP 1 158 185 discloses a quick-fastening element for fixing a guide rail of a pullout guide to a side rail. The quick-fastening element has an upper holding section, which has a V-shaped receptacle and can be applied around an upper bar. Furthermore, a second locking receptacle is provided, on which a lower rod can be clamped. This quick fastener has generally been proven for its sturdy attachment and ease of installation. However, the fastener can be used only with a specific rod design - thickness and distance of the rods in the Z direction.

DE 10 2009 034 967 discloses the fixing of a pullout guide via a front spring clip and a rear spring clip. The front spring clip has a U-shaped receptacle on which two rods can be fixed in a latching manner. A disadvantage of this fastening system is that two different fastening elements are used per guide rail. In addition, the front spring clip can only be used for a predetermined side rail in which the distance between two bars in the Z direction and the diameter of the bars are known. An insert for different side rails is not provided.

DE 10 2010 021 283 discloses a fastening part for a pullout guide with a first hook part and a second hook part. Both hook parts are each releasably attachable to a guide portion of a respective bar.

In this case, the fastening part is fixed in the Z direction only by a lateral tongue of the first hook part, which engages under a fastening section of the rod. A disadvantage of this invention is that the fastening part can be used only at a predetermined side rails, in which the distance of the rods in the Z direction and the thickness of the rods are known. Otherwise, it can not be fixed or there is a risk that the pullout guide is not guided safely because the hooks have a play in the Y and / or Z direction. Both hook parts are not clamped, the determination is made by a pivoting hook. Also, the attachment is Supply part according to the invention in particular provided only for the rear attachment of the pullout guide. For in particular the front attachment of the guide rail, a fastening part according to the invention is provided with a separate pivotable hook. Again, two different fasteners are used per guide rail.

It is therefore an object of the present invention to provide a fastening element for arranging a device, which in a simple way a fixation on two, substantially parallel in the X direction, rods which form a distance from each other in the Z direction, allows and flexible Can be mounted on different rod designs.

This object is achieved with a fastener with the features of claim 1.

According to the invention, the fastening element comprises a first receptacle, which can be arranged on a first rod and a second receptacle, which can be arranged on a second rod, wherein the second receptacle is designed as a fixed bearing for receiving a second rod in different thicknesses, and the first Recording as a floating bearing to compensate for different designs, distances and / or different thicknesses of the two rods is executed.

Under a fixed bearing is understood in this document a bearing point, which has no degrees of freedom in the effective direction of gravity. The fastener thus comes at the periphery of the rod at several points at least tangentially to the plant. The contact points are in the area opposite to the effective direction of gravity. It is therefore not necessary that the rod for forming a fixed bearing in the sense of this document is encompassed by the fastening element over the entire circumference. An enclosure of at least one third of the rod is sufficient to form a corresponding fixed bearing. It may, for example, form a substantially circular segment-shaped section on the fastening element. To secure the rod in the fastening element, an elastically deformable section may be provided in the region of the fastening element facing the effective direction of gravity. After inserting the rod into the fastening element, this section springs back into its gangsposition that the smallest provided for this fastener bar diameter can not pass through the opening.

The term movable bearing describes in this document an arrangement that another tertiary rod is fixed clamping only transversely to the effective direction of gravity. In the direction of gravity, it is possible to vary the position of the other rod in the dimensions of the resilient elements. This results in a radial displacement of the rod relative to the fastening element, but no axial displaceability of the rod relative to the fastening element.

From this inventive combination of a fixed and floating bearing results in a very high flexibility for attachment, for example, fittings on substantially parallel bars. These rods may be geometrically different in diameter, thickness and shape. The fastening element according to the invention also comprises a first receptacle which has at least one clamping section which exerts a main force on the first bar in the Y-direction, which is the case in the Y-direction is designed so that regardless of the thickness and position in the Z direction of the first rod, a minimum clamping force acts in the Y direction on the first rod .. The minimum clamping force is in any case so large that the first recording in the mounted state in the Y direction independently The clamping force acting on the first rod is dependent on the thickness of the first rod in the Y direction on the at least one clamping portion Direction in relation to the main force in Y-direction almost no power Do not look at the first staff. This means that the first rod is not fixed in either the X or Z direction by the first shot. The second receptacle of the fastening element has at least one substantially U-shaped or preferably V-shaped holding section and preferably at least one securing against lifting of the second bar in the second receptacle.

By using at least one fastening element according to the invention, a very flexible attachment of a device, preferably a pullout guide in or on a household appliance can be realized. In this case, the fastening element can be used to compensate for different rod designs, thicknesses and distances in the Z direction to each other. By the at least one clamping portion is ensured that the first rod is always fixed in the assembled state in the Y direction by clamping. The rods may have a round, oval, angular or other cross section or be formed as strips. As a result of the first and second receptacles configured according to the invention, the fastening element can be securely fixed to all bar thicknesses and bar spacings in the Z direction on the market. Known bar thicknesses are approximately between two and ten, in particular between three and six millimeters. The distance in the Z direction of the bars to each other can vary. In general, the distances are approximately between ten and fifty millimeters. In this case, the at least one clamping section of the first receptacle is advantageously designed so that it covers the entire distance in the Z direction. As a result, the fastening element has a large tolerance range with regard to the distance between the two rods. This allows the use of the fastening element according to the invention on different side rails. In the X direction, the direction is horizontal, understood in the longitudinal direction of the rods. Accordingly, the Y direction is the horizontal direction transverse to the longitudinal extent of the bars. The Z direction is the vertical direction. Under substantially parallel in the X direction bars is understood that the rods to each other have a maximum deviation of +/- 10 ° to the parallel or over the length of at least one rod areas with special geometries, such as so-called rod subsidence may possess. According to a further embodiment, the first receptacle has at least two wall sections which are parallel in the Z direction and which delimit the first receptacle in the Y direction. At least one wall section is provided with at least one clamping section. In this case, the at least one clamping section can be formed by at least one spring element, in particular by a resilient web, a leaf spring or the like, which can protrude from a wall section in the Y direction. A combination of different spring elements is possible. Alternatively, several clamping areas or spring elements may be present. Advantageously be formed on the underside of at least one spring element an insertion bevel.

The two wall sections of the first receptacle can be arranged offset in the X direction of the first rod. For a stable fixation of the fastening element, at least two wall sections may be provided on one side of the first rod on the first receptacle, so that twisting of the fastening element about a vertical axis is reliably avoided.

The second receptacle has on the U-shaped or preferably V-shaped holding portion preferably a preferably integrally formed with a leg protruding handle portion for bending the U-shaped or preferably V-shaped holding portion. As a result, the mounting of the fastener is facilitated. In addition, the security against the lifting of the second rod may be formed bendable and have a run-on slope for insertion of the second rod into the second receptacle. Due to the bendable design of the U-shaped or preferably V-shaped holding section and the fuse, second bars with different designs and / or thicknesses can be accommodated. The V-shaped holding section ensures that the second bar, regardless of its geometry, always bears against the holding section at at least two points.

The second receptacle may have a continuous, for example, the entire length of the Befestigungsendesiemetes corresponding handle portion. As a result, a higher rigidity of the holding section is achieved. Alternatively, the second receptacle may also have two or more holding sections with two or more legs and one or more recesses without interconnected grip sections, which are preferably located in the region of the at least one fuse. This embodiment can be used, for example, in bars with a smaller thickness. For partial bar sinkers, where the side rails have areas in which the two Z-spaced bars have non-parallel alignment in the X direction with each other, it is sufficient if one leg of the holding section comprises the second bar to permit loosening To prevent pullout guidance. In this area, the second rod may have stiffeners in the Z direction. These can form an additional fixation of the fastening element on the second rod. The fastening element may have in the region of the second receptacle on at least one outer side a recess for fixing the fastening element to an angled end region of the second rod of the side grid. In this case, the recess can be particularly advantageously present on each of the two outer sides and, for example, have the shape of a circular section.

For a simple production of the fastening element this can be made of a stamped and bent metal sheet, preferably in one piece. In order to increase the stability of the fastening element, the element may have at least one stiffening bead, a profiling or the like, for example in the region of a wall section.

According to the invention, a side rail for household appliances, in particular a baking oven, is provided with at least one pair of bars substantially parallel in the X direction, which form a distance from each other in the Z direction in which at least one fastening element according to the invention is fixed to two bars , Preferably, two identical fastening elements are provided, on which a guide rail of a pullout guide is fixed. Furthermore, in each case two identical fastening elements can be used for fixing the guide rails on both sides of the side rail. As a result, the fastener is very universally applicable and there are no different fasteners required for the various fixing points on the side rails. In the case of each side rail, in the mounted position, the first bar is fixed in the Y direction by clamping, and the second bar is fixed in the X, Y and Z directions.

The invention will be explained in more detail below with reference to an embodiment with reference to the accompanying drawings. Show it:

Figures 1 A and 1 B show two views of a side rail with fastening elements according to the invention in the mounted position; Figure 2 is a perspective view of the side rail of Figure 1 in the rear region;

Figure 3 is a perspective view of the side rail of Figure 1 in the front region; Figures 4A and 4B show two views of the side rail of Figure 1 in the region of a fastener;

Figures 5 and 6 are two views of the side rail of Figure 1 during assembly of a fastener;

Figure 7 is a perspective view of an inventive

Fastener,

Figures 8A to 8F show several views of the fastener of the figure

7; and

FIGS. 9A to 9C show several views of an alternative fastening element according to the invention.

In the illustrated embodiment, the first rod 7 is shown as a lower rod and the second rod 6 as the upper rod 6, wherein the first rod 7 with the lower first receptacle 1 1 and the second rod 6 with the upper second receptacle 20 is engaged , It is also within the scope of the invention that the first rod 7 above and the second rod 6 and the first receptacle 1 1 above and the second receptacle 20 is arranged below. The directional statements relate only to the embodiment explained below and are not intended to be limiting for the invention.

For the explanation below, a horizontal direction perpendicular to the longitudinal direction of the bars 6 and 7 should be the Y direction, the longitudinal direction of the bars 6 and 7 should be the X direction, and the vertical direction Z direction, as shown in FIG. 1A ,

According to the invention, the fastening element 10, 10 'comprises a first receptacle 1 1, which has at least one clamping portion 13 which exerts a main force F on the first rod 7, 7' in the Y direction, which is designed so that regardless of the thickness and Position in the Z direction of the first rod 7, 7 'acts a minimum clamping force F _min in the Y direction on the first rod 7, 7'. The minimum clamping force F _min is in any case so great that the first receptacle 1 1 in the mounted state in the Y direction is securely fixed to the first bar 7, 7 'irrespective of the loading situation of the device. In this case, the effective on the first rod 7, 7 'resulting clamping force F _res In contrast, the at least one clamping section 13 exerts almost no force on the first rod 7 in the Z direction in relation to the main force F in the Y direction, depending on the thickness of the first bar 7, T in the Y direction. 7 'off. This means that the first rod 7, 7 'is fixed by the first receptacle 1 1 neither in the X nor in the Z direction.

A food support 1 is slidably mounted in an oven and is for this purpose on opposite sides with an edge 2 on a pullout guide 3. Each drawer guide 3 comprises a movable running rail 4 and a fixed guide rail 5. The guide rail 5 is fixed on a side rail 9 via fastening elements 10. Each side rail 9 comprises two vertical posts 8 and pairs of rods 6 and 7, wherein each fastening element 10 is fixed to a first rod 7 and a second rod 6.

The guide rail 5 is fixed to the side rail 9 via a front fastening element 10 and a rear fastening element 10. The two fastening elements 10 are of identical design and detachably arranged on the rods 6 and 7.

In Figure 1 B, the rear fastener 10 is disposed in the region of a partial rod lowering 28. The fastening element 10 has, in the region of the second receptacle 20, two holding sections 32 with a central cutout 30. In this example, only one holding section 32 comprises the second bar 6. The other, in this case front, holding section 32 is in the region of partial bar lowering 28 arranged. In this example, the second bar 6 has stiffeners 29 in front of and behind the partial bar lowering 28 in the Z direction.

As shown in Figure 3, the fastener 10 comprises a slot-shaped first receptacle 1 1, through which the first rod 7 is performed. The first receptacle 1 1 is formed by an outer wall portion 12 and two inner wall portions 14. Formed on the outer wall section 12 is a clamping section 13 protruding toward the first bar 7 in the Y direction in the form of a spring bar with an insertion bevel 31, which bears in a clamping manner on the bar 7 in the Y direction. The first rod 7 is not fixed / limited in the Z direction by the first receptacle (1 1). It is also shown in FIG. 3 that the fastening element 10 has, in the region of the second receptacle 20, a recess 26 for positioning the fastening element on the angled end region 27 on the outer side adjacent to the angled end region 27 of the second rod 6.

In Figures 4A and 4B, the fastener 10 is shown in the assembled position. On the fastening element 10, the guide rail 5 can be fixed by mechanical means or by welding or gluing. At the lower first receptacle 1 1 of the fastener 10 of the clamping portion 13 is in the form of a spring bar on one side of the lower bar 7, which is held in a form-fitting manner between the wall portions 14 and the clamping portion 13 on the wall portion 12. Furthermore, the upper second rod 6 is held in an upper second receptacle 20 of the fastening element 10, which has a V-shaped holding portion 32 with a first leg 21 and a second leg 22. The obliquely spreading legs 21 and 22 are in the upper region of the second rod 6 at. At the bottom of the second rod 6, a fuse is formed, which secures the second rod 6 against falling out of the receptacle 20 and prevents lifting of the fastener 10.

In Figure 5, the fastener 10 is shown during assembly. First, the first rod 7 is inserted into the slot-shaped first receptacle 1 1 of the fastener 10. Subsequently, the obliquely oriented fastener 10 is pivoted about the axis of the first rod 7, wherein the second rod 6 between a handle portion 23 which is integral with the

Leg 22 is formed, and a run-on slope 25, which protrudes from the fuse 24, is inserted into the receptacle 20. Subsequently, the second rod 6 is locked in the second receptacle 20, as shown in Figures 6 and 4B. If the second rod 6 is still held with play in the second receptacle 20, the handle portion 23 can be pressed down to press the legs 21 and 22 against the second rod 6. Additionally or alternatively, the run-on slope 25 can be bent on the fuse 24 upwards, so that the web 24 rests against the underside of the rod 6 and the rod 6 is held in a form-fitting manner in the receptacle 20 substantially. Alternatively, the run-on slope 25 on the fuse 24 can be designed to be bent upwards in a constructive manner. It may also be advantageous if the fuse 24 is designed to ascend inclined to the second rod 6. In Figure 6 it can be seen that the fastener 10 can be mounted at a different distance between the two rods 6, 7 and 7 ', because as the double arrow H suggests, the first rod 7, 7' in the Z direction in various positions within the slot-shaped receptacle 1 1 are arranged. As a result, the fastening element 10 can be used flexibly for differently shaped and / or shaped side rails 9.

In FIG. 6, two identical fastening elements 10 are mounted on two different side rails 9, 9 ', which differ in the position of the rods 7 and 7', in the form that the two bars 6, 7, 7 'of the side rails 9, 9 'have different distances from one another in the Z direction. Both in the side rail 9 and the side rail 9 ', the first receptacle 1 1 is fixed to the first rod 7, 7' in the Y direction by clamping. As a result, the fastening element 10 can be used flexibly for differently shaped and / or shaped side rails 9, 9 '.

In FIGS. 7 and 8A to 8F, a fastening element 10 according to the invention is shown in detail. The fastener 10 is made of a stamped and bent sheet metal, whereby a production of plastic or other materials is possible.

The first receptacle 1 1 for insertion of the first rod 7 is formed open at the bottom and formed by making a recess 15 in which a Z-direction extending wall portion 12 is connected via a step 16 with the rest of the fastener 10. On the wall portion 12, a c-shaped recess 18 is formed, which surrounds the clamping portion 13 in the form of a spring bar. The clamping portion 13 is formed bendable and connected via a bridge portion 19 with the wall portion 12. The clamping portion 13 has a contact strip for engagement with the first rod. 7

On the opposite side of the receptacle 1 1 two spaced-apart wall sections 14 are formed so that pivotal movements of the fastener 10 are avoided about an axis in the Z direction. On the wall section 14, two stiffening beads 33 are formed, which increase the stability of the fastening element 10. Furthermore, a bead 17 is formed in the region of the step 16, which ensures a higher stability of the wall section 12. On the fastening element 10, a second receptacle 20 for inserting the second rod 6 is further formed. The receptacle 20 is formed by two V-shaped holding portions 32 which comprise two legs 21 and 22 and can be applied to an upper side of the rod. Between the two receptacles 20 with the legs 21 and 22, a fuse 24 is formed with a protruding chamfer 25. The receptacle 20 and the fuse 24 are arranged offset in the X direction, similar to the wall section 12 to the wall sections 14. In Figures 9A to 9C, an alternative embodiment of the fastener 10 'according to the invention is shown in detail. In this embodiment, the fastener 10 'has a second receptacle 20' for insertion of the second rod 6, in which a handle portion 23 'is made continuous.

In the illustrated embodiment, the second rod 6 is held substantially positive fit to the second receptacles 20, 20 'of the fastener 10, 10', while the first rod 7, 7 'fixed only by clamping in the Y direction and not fixed in the Z direction is. Of course, it is also possible to fix the first rod 7 to a corresponding second receptacle 20, 20 'and to hold the second rod 6 displaceable in the Z direction on the fastening element 10, 10'.

In addition, in the illustrated embodiment, the wall portions 12 and 14 and the legs 21 and 22 are arranged offset in relation to the fuse 24 in the X direction. Of course, it is also possible to arrange the wall sections 12 and 14 and the legs 21 and 22 and the fuse 24 directly opposite one another, that is to say without an offset in the X direction.

LIST OF REFERENCE NUMBERS

1 food support

2 edge

3 pullout guide

4 track rail

5 guide rail

6 staff

7 staff

T bar

8 posts

9 side rails

9 'side rails

10 fastener

10 'fastener

1 1 recording

12 wall section

13 clamping section

14 wall section

15 recess

16 level

17 beading

18 recess

19 bridge section

20 recording

20 'recording

21 shekels

22 thighs

23 handle section

23 'handle section

24 fuse

25 run-up slope

26 recess

27 Angled end area

28 rod lowering

29 stiffening

30 recess

31 insertion bevel

32 holding section 33 stiffening bead

F main force

r min minimum clamping force

F _res resulting clamping force

H tolerance range

Claims

claims

1 . Fastening element (10, 10 ') for arranging a device, preferably a pullout guide, in or on a domestic appliance, preferably in an oven, on two rods (6, 7, 7') which are essentially parallel in the X direction, which form a distance from one another in the Z direction, with a first receptacle (1 1) which can be arranged on a first rod (7, 7 ') and a second receptacle (20, 20') which is attached to a second rod (6 ), characterized in that the second receptacle (20, 20 ') serves as a fixed bearing for receiving a second rod

(6) is designed in different thicknesses, and that the first receptacle (1 1) as a floating bearing to compensate for different designs, distances and / or different thicknesses of the two rods (6, 7, 7 ') is executed.

2. Fastening element according to claim 1, characterized in that the first receptacle (1 1) has at least one clamping portion (13).

3. Fastening element according to claim 2, characterized in that the at least one clamping portion (13) has a main force (F) in Y-

Direction of the first rod (7, 7 ') exerts.

4. Fastening element according to claim 3, characterized in that by the main force (F) in the Y direction, regardless of the thickness and position in the Z direction of the first rod (7, 7 '), a minimum clamping force (F _min ) on the first rod (7, 7 ') acts.

5. Fastening element according to claim 4, characterized in that the resulting clamping force (F _res ) in the Y direction depends on the thickness and / or position in the Z direction of the first rod (7, 7 ') on the clamping portion (13).

6. Fastening element according to one or more of the preceding claims, characterized in that the at least one clamping section (13) in the Z direction in relation to the main force (F) in the Y direction, almost no force on the first rod (7, 7 ') exercises.

7. Fastening element according to one or more of the preceding claims, characterized in that the first receptacle (1 1) min- at least two, substantially parallel wall sections (12, 14) which delimit the first receptacle in the Y direction.

8. Fastening element according to claim 7, characterized in that on one side of the first rod (7, 7 ') on the first receptacle (1 1) at least two wall sections (14) are provided.

9. Fastening element according to claim 7 or 8, characterized in that on the first receptacle (1 1) at least one wall portion (12) is provided with at least one clamping portion (13).

10. Fastening element according to claim 9, characterized in that the at least one clamping portion (13) by a spring element, in particular by a resilient web, a leaf spring or the like, is formed.

1 1. Fastening element according to one or more of the preceding claims, characterized in that the second receptacle (20, 20 ') has a substantially U-shaped or V-shaped holding portion (32, 32').

12. Fastening element according to one or more of the preceding claims, characterized in that the second receptacle (20) on the U- or V-shaped holding portion (32, 32 ') has a protruding handle portion (23, 23') for bending the U-shaped or V-shaped holding portion (32, 32 ').

13. Fastening element according to one or more of the preceding claims, characterized in that the second receptacle (20, 20 ') has a fuse (24) against the lifting of the second rod (6).

14. Fastening element according to claim 13, characterized in that the fuse (24) is bendable and has a run-on slope (25) for insertion of the second rod (6) in the second receptacle (20, 20 ').

15. Befestigungselennent according to one or more of the preceding claims, characterized in that the fastening element (10, 10 ') is made of a stamped and bent metal sheet.

16. Fastening element according to one or more of the preceding claims, characterized in that the second receptacle (20, 20 ') on at least one outer side a recess (26) for positioning of the fastening element (10, 10') at an angled in the Y direction End region (27) of the second rod (6).

17, side rails (9, 9 '), in particular for an oven with at least two, substantially in the X direction parallel bars (6, 7, 7'), which form a distance from one another in the Z direction, characterized in that at least one fastening element (10, 10 ') according to one or more of the preceding claims on two bars (6, 7, 7') of the side rail is fixed.

18. A side rail according to claim 17, characterized in that two identical fastening elements (10, 10 ') are provided, on which a guide rail (5) of a pullout guide (3) is fixed.

19, side rails according to claim 17 or 18, characterized in that fixed in the mounted position of the first rod (7, 7 ') in the Y direction by clamping and the second rod (6) in the X, Y and Z direction is.