WO2014048732A1

WO2014048732A1 - Bearing bushing which is designed for mounting a structural part on a component of a domestic appliance, and domestic appliance having such a bearing bushing

Info

Publication number: WO2014048732A1
Application number: PCT/EP2013/068748
Authority: WO
Inventors: Philipp Nather
Original assignee: BSH Bosch und Siemens Hausgeräte GmbH
Priority date: 2012-09-26
Filing date: 2013-09-10
Publication date: 2014-04-03
Also published as: DE102012217358A1; EP2901086A1

Abstract

The invention relates to a bearing bushing (18, 19) which is designed for mounting a structural part (20) on a component (8) of a domestic appliance, and the bearing bushing (18, 19) has a rear connecting region (23) which is intended for introducing into an aperture (14 to 17) in the component (8) of the domestic appliance and on the front of which is formed an abutment flange (21) for striking against an upper side of the component (8) of the domestic appliance, wherein the connecting region (23) has a fitting element (24), by means of which the bearing bushing (18, 19) can be fitted in on a periphery (14a) of the aperture (14 to 17), and can be pivoted about the fitting for final installation in the aperture (14 to 17). The invention also relates to a domestic appliance (1) having a bearing bushing (18, 19).

Description

Bearing bush, which is designed for storing a household appliance component on a household appliance component, and household appliance with such a bushing

The invention relates to a bearing bush, which is designed for storing a household appliance component on a household appliance component. The bushing has a rear connection portion for insertion into a recess in the home appliance component. At this connection area, an abutment flange is formed on the front side as a stop on the upper side of the household appliance component. Furthermore, the invention relates to a household appliance at least with such a bushing.

In known ovens bearing bushes are arranged on an inner side of a muffle, which limits a cooking space, which are adapted to receive supporting frames on which a food support can be applied. In current bushings, the connecting portion is provided only for passage through the recess. To attach this bushing to a muffle wall additional separate components, such as retaining springs and the like are required. As a result, on the one hand increases the number of components and the assembly is considerably expensive.

It is an object of the present invention to provide a bushing, which can be easily and securely attached. In addition, it is an object to provide a household appliance with such a bushing.

These objects are achieved by a bushing and a household appliance according to the independent claims.

A bushing according to the invention is configured for supporting a household appliance component on a household appliance component, and the bushing comprises a rear connecting portion for insertion into a recess in the household appliance component. At the connection area is a front Investment flange adapted to strike on a top of the household appliance component. The connecting region of the bearing bush comprises a suspension element, with which the bearing bush can be suspended at an edge of the recess and is pivotable for final assembly in the recess around the suspension. By such a design of the bearing bush, a very specific mounting scenario can be made possible by which no unwanted mounting forces on the bearing bush, in particular specific areas of the bearing bush, occur.

In conventional known bearing bushes, which have only in view of the arrangement of the bearing bush in the recess on the two opposite vertical side edges of the contact flange rearwardly projecting locking elements which lock laterally behind the recess, it is achieved by this design of the bearing bush according to the invention that not a straight-line movement of the bearing bush is required for locking, but it can first be made a suspension of this bearing bush in the edge of the recess and then carried out by a pivoting movement of the bearing bush in the end position in the recess. This significantly relieves the system. Even with very thin components of the bearing bush can thus be prevented even with repeated repeated insertion and removal of the bearing bush and in particular of the household appliance component in the bearing bush. The permanently very accurate position and safe storage of the household appliance component is achieved.

It is preferably provided that the suspension element is formed in a lower region of the connecting region of the bearing bush on the rear side of the abutment flange. As a result, on the one hand, the weight force can also be utilized during suspension and a particularly smooth pivoting of the upper region of the bearing bush toward the recess can be carried out. The once hooked suspension element can thus also be held there due to the weight of the bearing bush, and an unwanted slipping out or even falling down the hinged bearing bush is prevented.

It is preferably provided that the suspension element is designed oriented horizontally. The above advantages are particularly evident. It is preferably provided that the hooking element is U-shaped or V-shaped in cross-section. On the one hand, this makes hooking in particularly easy and unerring possible, on the other hand also given sufficient freedom of movement.

Preferably, it is provided that the suspension element is formed with a suspension web or a Einhängeumkehr, so that this Einhängesteg or the Einhängeumkehr represents quasi the uppermost point of the suspension element and thus also forms the burr of the suspension element. This suspension web is arranged below a lower edge of an opening formed in the abutment flange for passing and holding the household appliance component, so that when passing the household appliance component through this opening, the hooking element is not disturbing in the way. In addition, this very low-lying positioning of the suspension element on the one hand reaches a very immediately adjacent hanging and attaching the abutment flange of the bearing bush in the lower part of the household appliance component and favors the corresponding pivotal movement to achieve the final position of the bearing bush.

It is preferably provided that a suspension web of the suspension element is formed directly adjacent to the abutment flange. The above advantages are thus further improved. In particular, this can prevent undesired play between the abutment flange and the recess, in particular in this lower region in which the suspension element is arranged. Preferably, the hooking element is rigid and immovable in itself formed on the abutment flange, so that no unwanted movements occur to the abutment flange and the assembly processes of the bearing bush in this respect are not affected. By this mechanically stable part in the form of a suspension element and the mounting scenario of the bushing is robust and there are no undesirable deformations of the bearing bush.

In a further embodiment it can be provided that a suspension element is an elongated rail or runner, the inclined relative to the horizontal downwards the abutment flange is arranged projecting to the rear. Such an embodiment is relatively easy to implement in terms of manufacturing technology. Preferably, the inclination of the rail to the horizontal between 8 ° and 40 °, in particular between 8 ° and 30 ° amount. As a result, the threading for hanging in the opening or recess is quite simple and fast.

It is preferably provided that two parallel and spaced from each other

arranged rails are designed as suspension elements. This improves the mechanical leverage and undesirable tilting around the

Pivot axis can be avoided, especially if the rails have a relatively small width.

It is preferably provided that the latching element opposite and spaced to a latching element is arranged, which extends from the abutment flange to the rear. The latching element is associated with the connection area of the bearing bush. It is thus formed in particular in an upper region of the bearing bush of this latching element, which then allows after attaching the bearing bush by pivoting the bushing to the recess at the opposite end of the Einhängeelement a secure end position of the bearing bush. This is done by the latching element, which is then latched in the end position in the recess, in particular on a rear side of the household appliance component adjacent to the recess or arranged behind the recess.

It is preferably provided that the latching element is formed in an upper region of the connecting region on the rear side of the abutment flange. The latching element is in particular a component which is separate from the suspension element, and the specific spaced positioning means that the assembly operations can be carried out particularly quickly and reliably in order to be able to attach the bearing bush into the end position. In addition, the bearing bush is then held positionally secure.

It is preferably provided that the latching element is tongue-shaped and has an upwardly curved end flap at the free end. This is in terms of the contacting of the household appliance component particularly advantageous, so that not only the bearing bush is held positionally secure in the household appliance component, but beyond even the latching element, the additional function is taken to secure the position of the household appliance component in the installed state.

This is favored by the specific shape of the end flap, since on the one hand a correspondingly mechanically stable resting of the end flap on the household appliance component is achieved and on the other hand when inserting the household appliance component in the bearing bush this Endlasche is not splaying or jamming in the way.

It is preferably provided that the latching element has a tongue projection which is directed down to the hanging element and on which the end flap is formed. This specific shaping of the latching element reaffirms the advantages mentioned above.

It is preferably provided that an upwardly projecting latching element is formed in the latching element. In particular, the latching element is designed so that it is integrated in a tongue projection and rises up to the contact flange out of the tongue projection upwards. The snapping behind the household appliance component in the region of the recess is thereby particularly advantageous and allows a desired in the upper region of the bearing bush position fixation.

Due to the constructive embodiments of the bearing bush, the bearing bush is thus inserted obliquely downwards during assembly and positioned accordingly by the suspension element via a lug-shaped tension protection. On the opposite side, which is still positioned away from the recess quasi weghängend, then the bearing bush is brought to the recess and the household appliance component, until then the locking element of the latching element is locked in its final position. The tensile load on the bearing bush in the direction of a receiving space, which is limited by the household appliance component, acts directly on all holding elements of the bearing bush. By a corresponding positioning of the suspension element and the Verrastelements a particularly emphasized lever ratio is achieved, so that the maximum load acts on the stable suspension element. Only a small part of the tensile force is transmitted to the latching element and in particular to the projecting latching element. In particular, the integrated design of the projecting locking element in the tongue approach is advantageous in terms of manufacturing.

Alternatively, it can also be provided that laterally in the upper region of the bearing bush in each case a latching lug is designed to be integrated as a separate element and in particular is formed projecting from the contact flange to the rear. The design of the locking lugs could also be according to the previously known prior art in which are formed by the abutment flange at the opposite vertical edges rearwardly projecting bracket, in each of which an outwardly oblique locking lug is formed, said locking lugs then laterally and thus not at the top and bottom of the household appliance component latch or snap behind.

In addition, the tensile forces are absorbed within the bearing bush by simple bends. These are obliquely shaped and formed in particular by the tongue-shaped end flap. Despite a very thin material thickness, in particular of the latching element, for example, 0.5 mm, so the force is diverted parallel to the surface of the material to several millimeters. This prevents the lining of the Buchsenlochränder and forms a stable system. Further features and inventions emerge from the claims, the figures and the description of the figures. The features and feature combinations mentioned above in the description as well as the features and feature combinations mentioned below in the description of the figures and / or shown alone in the figures can be used not only in the combination indicated, but also in other combinations or in isolation, without the frame to leave the invention. There are thus also embodiments of the invention as encompassed and disclosed, which are not explicitly shown and explained in the figures, but by separated Feature combinations emerge from the described embodiments and can be generated.

An embodiment of the invention will be explained in more detail with reference to schematic drawings. Show it:

Fig. 1 is a simplified perspective view of an embodiment of a household appliance according to the invention;

Fig. 2 is a perspective view of a partial section of the household appliance according to Fig. 1;

3 shows a perspective first side view of an exemplary embodiment of a bearing bush according to the invention;

4 shows a second perspective view of the bearing bush according to FIG. 3 in an intermediate assembly state;

Fig. 5 is a representation of the rear of the bearing bush of FIG. 4 in the mounted

Final state and with imported household appliance component;

Fig. 6 is a further illustration of the embodiment of FIG. 5 without the

Home appliance component and in a different perspective;

7 shows a perspective side view of a further embodiment of a bearing bush according to the invention; and

Fig. 8 is a representation of the rear of the bearing bush of FIG. 7 in the mounted

Final condition and with imported household appliance component.

In the figures, identical or functionally identical elements are provided with the same reference numerals. In Fig. 1, a trained as a baking oven 1 household appliance for preparing food is shown in a schematic representation. The oven 1 comprises a hob 2 with four cooking zones 3, 4, 5 and 6, which are to be understood in terms of shape and number by way of example only. The hob 2 is also an optional embodiment of the oven. 1 In addition, the oven 1 comprises a cooking chamber 7 which is bounded by a muffle 8. The muffle 8 comprises vertical side walls 9 and 10 and a bottom wall 1 1, a top wall 12 and a rear wall 13. The cooking chamber 7 is closed at the front by a door, not shown, and includes above an operating device, not shown, which may have operating elements and a display unit.

On an inner side of the vertical side walls 9 and 10 recesses 14, 15, 16 and 17 are formed. Both the number and the position of the recesses 14 to 17 is merely exemplary and beyond corresponding openings are formed as recesses in the opposite vertical side wall 10 in a corresponding amount and corresponding number. In the recesses 14 to 17 bearing bushes are introduced, of which only the bearing bushes 18 and 19 are provided with reference numerals. These bushings 18 and 19 are mounted in the vertical direction (y-direction) at the same height level. The bushings 18 and 19 are formed for receiving the support frame, not shown. The support frame or hook-in grid 20 (FIG. 2) designed as a household appliance component may be a food support, as shown in FIG. 2, and / or a rail pull-out system. If a rail extension system is present, the food support can be positioned on it and pulled out of the cooking chamber 7 and inserted. The bushing 18 represents the front bearing bush, wherein the bearing bush 19 is the rear.

In Fig. 3, an embodiment of the bearing bush 18 is shown in a first perspective view. This is explained in the exemplary embodiment representative of the bearing bush 19 below.

The bearing bush 18 comprises a contact flange 21, which has an opening 22. Through this opening 22, a portion of the household appliance component in the form of Einhängegitters 20 are passed. In particular, a free end of a guide rod 20a or 20b (FIG. 2) is inserted therethrough.

The bushing 18 shown in FIG. 3 from the rear comprises the already mentioned connection region 23, which forms at the rear of the abutment flange 21. The connecting region 23 comprises a suspension element 24, which forms in a lower region 21 b of the bearing bush 18 and in particular of the abutment flange 21. The suspension element 24 is formed hook-shaped and has a horizontally extending Einhängeumkehr or a Einhängesteg 25, which forms the upper ridge quasi. This suspension web 25 is formed immediately and directly adjacent to the abutment flange 21, wherein beyond the mounting web 25 on the side opposite the abutment flange 21 a plate 26 extends obliquely downwards. In addition, it can be seen in Fig. 3 that the suspension web 25 level and thus in the vertical direction (y-direction) below a lower edge 22b of the opening 22 is located.

In the vertical direction opposite this suspension element 24, a latching element 27 is formed, which extends from the abutment flange 21 to the rear and the connection region 23 is associated. The suspension element 24 and the latching element 27 are two separate and spaced apart parts. The latching element 27 comprises a tongue projection 28, which is slightly bent or directed downwards in the direction of the hooking element 24. At its free end opposite the abutment flange 21, the latching element 27 has an end flap 29. This comprises a minimum or a contact edge 29a. In addition, a vertically projecting upwardly projecting locking element 30 is integrally formed in the tongue projection 28, which is oriented with its free end in the direction of the abutment flange 21 out. The locking element 30 is viewed in the vertical direction above an upper edge 22 a of the opening 22. As can also be seen in Fig. 3, the latch member 27 is connected in an upper portion 21 a of the abutment flange 21 to this. In addition, the latching element 27 extends significantly farther back than the suspension element 24.

FIG. 4 shows a perspective side view of the bearing bush 18. This is mounted in a Zwischenmontagezustand on the wall 9. For this purpose, the bearing bush 18 is suspended with the suspension element 24 at a lower edge 14a of the recess 14. The upper portion 21 a of the abutment flange 21 is still tilted obliquely outward away from the outside of the wall 9 arranged. The lower portion 21 b of the abutment flange 21 is already directly against the outside of the wall 9. For further assembly, the bearing bush 18 is pivoted in the upper region 21 a to the wall 9, according to the arrow P1, until the locking element 30 is locked and the wall 9 snaps behind.

In Fig. 5 the assembled end state of the bearing bush 18 is shown, wherein here is a view from behind. As can also be seen in this view, the end flap 29 rests with the support point 29a on a flattened portion 31 of the rod 20b.

In Fig. 6 is a perspective view of the mounted end state of the rod 20b in the bearing bush 18 is shown, for better clarity, the wall 9 is not shown here. Forces are shown by the illustrated arrows, in which case a traction lock with small lever and large force is generated by the suspension element 24 and a large lever with a small load force is formed by the locking element 30 in the latching element 27. The tensile force is generated by the arrow P2. The bushing 18 is integrally formed and representative of all other bushings that are designed analogously explained.

In Fig. 7 is a rear view of a further embodiment of a bearing bush 18 is shown in a perspective view. In contrast to the embodiment according to FIGS. 3 to 6, the formation of two suspension elements 24 is provided here, which are formed as rails or skids. The suspension elements 24 extend in the lower portion 21 b of the abutment flange 21 to the rear. The suspension elements 24 are rectilinear and parallel and spaced from each other. Of Furthermore, they are arranged inclined with respect to a horizontal plane (xz-plane) at an angle between 8 ° and 30 ° downwards. At the edges facing each other, the notes are bent upwards. The distance between the rails is dimensioned such that a rod 20b can extend at least in sections lying therebetween.

In Fig. 8 is a rear view of the assembled state of the bearing bush 18 shown in FIG. 7.

LIST OF REFERENCE NUMBERS

1 oven

2 hob

3, 4, 5, 6 cooking zones

7 cooking space

8 muffles

9, 10 side walls 1 1 bottom wall 12 ceiling wall 13 rear wall

14, 15, 16, 17 recesses

14a lower edge

18, 19 Bushings 20 Suspension grille

20a, 20b executive staff

21 abutment flange

21 a upper area

21 b lower area 22 opening

22a upper edge

22b lower edge

23 connection area

24 Hook-in element 25 Hook-in rail 26 Plate

27 latching element 28 tongue projection 29 end flap

29a support 30 latching element 31 area

Claims

claims

A bushing (18, 19) adapted to support a household appliance component (20) on a household appliance component (8), and said bushing (18, 19) having a rear connecting portion (23) for insertion into a recess (14 to 17) in the household appliance component (8), on the front side an abutment flange (21) for abutment on an upper side of the household appliance component (8) is formed, characterized in that the connecting region (23) at least one

Hanging element (24), with which the bearing bush (18, 19) at one edge (14a) of the recess (14 to 17) can be suspended, and for final assembly in the recess (14 to 17) is pivotable about the hook.

2. Bearing bush (18, 19) according to claim 1, characterized in that the

Hanging element (24) in a lower region (21 b) of the connecting region (23) on the rear side of the abutment flange (21) is formed.

3. bushing (18, 19) according to claim 1 or 2, characterized in that the suspension element (24) with a suspension web (25) is oriented horizontally.

4. bushing (18, 19) according to any one of the preceding claims, characterized in that the suspension element (24) with a suspension web (25) below a lower edge (22 b) in the abutment flange (21) formed opening (22) for passing and Holding the household appliance component (20) is arranged.

5. bearing bush (18, 19) according to one of the preceding claims, characterized in that a suspension web (25) of the suspension element (24) is formed directly adjacent to the abutment flange (21).

6. bearing bush (18, 19) according to any one of the preceding claims, characterized in that the suspension element (24) is rigid in itself and is arranged immovably on the abutment flange.

7. bearing bush (18, 19) according to one of the preceding claims, characterized in that the suspension element (24) is U-shaped or V-shaped.

8. bushing (18, 19) according to any one of claims 1 to 6, characterized in that a suspension element (24) is an elongated rail which is inclined relative to the horizontal downwardly disposed on the abutment flange (21) rearwardly projecting.

9. bushing (18, 19) according to claim 8, characterized in that two parallel and spaced apart rails are formed as suspension elements (24).

10. bushing (18, 19) according to any one of the preceding claims, characterized in that the suspension element (24) opposite and spaced therefrom a latching element (27) is arranged, which extends from the abutment flange (21) to the rear.

1 1. Bearing bush (18, 19) according to claim 10, characterized in that the latching element (27) in an upper region of the connecting region (23) at the rear of the abutment flange (21) is formed, and the latching element (27) is tongue-shaped and on Having the free end an upwardly curved end tab (29).

12. bearing bush (18, 19) according to any one of claims 10 or 1 1, characterized

in that the latching element (27) has a tongue projection (28) which is directed downwards towards the suspension element (24) and on which an end flap (29) is arranged.

13. bearing bush (18, 19) according to any one of claims 10 to 12, characterized

characterized in that in the latching element (27) an upwardly projecting

Locking element (30) is formed, in particular a latching element (30) is formed, which is integrated in a tongue projection (28) and rises to the abutment flange (21) out of the tongue projection (28).

14. Household appliance (1) for preparing food, with a muffle (8), which has a side wall (9, 10), in which a recess (14 to 17) is formed, in which a bearing bush (18, 19) after one of the preceding claims is arranged.

15. Household appliance (1) according to claim 14, characterized in that in the bearing bush (18, 19) a suspension grid (20) for a food support and / or a pull-out system is used as a household appliance component and / or the

Household appliance component is a muffle (8) of a baking oven, in particular in the installed final state a curved end flap (29) of a Verrastelements (27) of the bearing bush (18, 19) on an upper side (31) of the household appliance component (20) is seated.