EP2703730A2 - Bearing bush for a domestic appliance with a mushroom-shaped base body with a front cavity that can be accessed and household appliance - Google Patents

Abstract

The bearing bushing (20) has connecting portion for insertion into a recess of the household appliance component (12). The connection region has two bending flaps (45) or bending lug which is bent by an installer or an automated assembly device, after insertion of the bearing bush into the recess for securing the bearing bush against household appliance component. Independent claims are included for the following: (1) mounting assembly of bearing bushing; and (2) method for mounting bearing bushing in wall.

Description

The invention relates to a bearing bush, which is designed for storing a household appliance component on a household appliance component, and the bearing bush has a rear connecting portion for insertion into a hole in the household appliance component, on the front side a contact flange for abutment on an upper side of the household appliance component is formed. The invention also relates to a household appliance with at least one such bushing.

In household appliances, such as an oven, bearing bushes are arranged on an inner side of a muffle, which limits a cooking space, which are designed to accommodate carrying racks on which a food support can be applied. In this context, for example, the muffle may be the household appliance component and the attachment or a household appliance component may be a suspension grid for a food support and / or a pull-out system, for example a telescopic rail.

An oven muffle is for example from the DE 195 00 371 A1 known.

Since the walls of such a muffle should be made as thin as possible, new requirements are made of holes in these walls, which must then take bushings and other components. In particular, with regard to mechanical stability and mounting options new requirements are here to meet.

It is an object of the present invention to provide a bushing, which is improved in terms of mechanically stable attachment of other components and with respect to the permeability of fluids. Furthermore, a corresponding household appliance is created.

This object is achieved by a bushing and a household appliance according to the independent claims.

A bushing according to the invention 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 the connection area, an abutment flange or front flange for abutment on an upper side of the household appliance component is formed on the front side. An essential idea of the invention is to be seen in that the bearing bush has a base body having a front accessible cavity for receiving the household appliance component, wherein the cavity is formed as a blind hole. Such a design of the bushing allows the inclusion of household appliance components, without a fluid, in particular steam, could pass through the bushing. It is thus designed a very vapor-tight design of the bearing bush, so that leakage of fluids is prevented by a limited by the household appliance component space on the bushing. As a result, on the one hand, the operating state in this space can be advantageously set and maintained, and functional impairment or damage to components outside this space and thus on the opposite side of the household appliance component by such fluids can be prevented.

It is preferably provided that the base body is cup-shaped and has the abutment flange or the front flange. Such an integral design prevents component tolerances between these components compared to the separate embodiment. In addition, a mechanically more stable and highly resilient design is realized by this integral one-piece design.

It is preferably provided that a recess for a seal is formed on a rear side of a contact flange of the base body. As a result, the fluid-tightness of the interface between the bearing bush and the household appliance component can be further improved. Due to the recess, the seal can also be attached very fixed position and the structure can be minimized in its dimensions.

It is preferably provided that a holding device for the household appliance component is formed in the cavity. As a result, this is quasi protected and sunk positioned so that damage can be avoided here. In addition, the holding device during assembly of the bearing bush to the household appliance component is not disturbing in the way.

It is preferably provided that the holding device has a gripping element with two spring tabs. In this Umgriffselement the household appliance component can thus be easily mounted and still be held securely. It thus almost snaps into the wraparound element during a specific assembly movement and is then held therein.

It is preferably provided that the gripping element is arranged on a cavity bounding the first side wall. As a result, the insertion of the household appliance component in the Umgriffselement is further simplified and the Umgriffselement is fixed mechanically stable.

Preferably, it is provided that the gripping element holds the household appliance component on opposite sides by these two spring tabs and thus stabilized, so that the positionally stable holder is favored again.

It is preferably provided that the gripping element is arranged on a cavity bounding the first side wall.

In particular, it is provided that the holding device has an at least one side formed securing web, which extends at least partially over the height of a second side wall which defines the cavity, and is designed for axial mounting of the attachment. The securing web is arranged as a separate component for Umgriffselement, in addition to the Umgriffselement in view of the mechanical support of the household appliance component.

It is preferably provided that the securing web of a front opening of the cavity is arranged closer, as the Umgriffselement and on an end facing away from the Umgriffselement is at least partially tapered.

As a result, a particularly simple assembly scenario for the household appliance component can be made possible and yet a reliable coupling and mounting with the securing web and the gripping element can then be achieved. A very targeted and user-friendly assembly is made possible. By the interaction of the securing web and the Umgriffselements a position assurance of the household appliance component is then achieved in all three spatial directions.

Preferably, it is provided that the holding device has a holding lug or a securing clip for holding the household appliance component, wherein this holding lug is arranged on a third side wall delimiting the cavity and extends obliquely into the cavity. This retaining tab is thus almost designed as a locking tab. This oblique orientation is then oriented away from the front opening of the cavity at the connection point on the third side wall to a rear wall which delimits the cavity. As a result, the household appliance component can be easily brought into its final position and this retaining tab then snaps a stop of the household appliance component in the end position, so that an axial pulling out of the household appliance component is prevented by the retaining tab and locked.

Preferably, the household appliance component in the inserted into the cavity tail specific flattening or the like, so that in particular asymmetries are generated about the longitudinal axis of this tail and thereby on the one hand a very specific motion control is specified during assembly and to achieve the end position, a coupling with the Umgriffselement and the securing web and the retaining tab is specified.

It can be provided that the holding device is integrally formed in the base body and thus given a one-piece design. However, it can also be provided that the holding device are formed and provided at least in sub-elements as compared to the base body separate parts, which can then be arranged destructively releasably in the base body.

It can be provided that the holding device is designed as a holding element that is designed as a separate component to the base body and can be inserted into this in a cavity.

It is preferably provided that a detent element for fastening the base body is formed in the recess on an outer side of the connecting region. This allows a non-destructive detachable connection between the bearing bush and the recess or the hole in the household appliance component can be achieved. On the one hand this achieves a mechanically stable seat of the bearing bush in the household appliance component, on the other hand enables a very rapid disassembly.

It is preferably provided that the bearing bush is integrally formed. In this context, an embodiment may be provided in which the bearing bush is produced from a single blank. However, it can also be provided that the bearing bush is formed of several separate parts, which are then connected non-destructively undetachable, which should also be a one-piece design in the context of the invention. Such a non-destructive permanent connection can be achieved for example by welding or pressing.

In such an embodiment, in which two originally separate parts of a bearing bush are non-detachably connected non-destructively, it is advantageous if a first part is a front part and a second part is a cup-shaped rear part. The front part may also be preferably pot-shaped in the context and comprise on the front side of the front flange and the abutment flange. When connecting the front part is then inserted into the rear part and causes a compression or welding of the nested cylindrical sections of the two parts. It is then created a nested pot structure, wherein the cup-shaped piece of the front part has a smaller depth than the cup-shaped rear part, so that between a rear wall of the cup-shaped part of the front part and the cup-shaped rear part, a gap or partial cavity is formed.

It is preferably provided that the rear wall of the cup-shaped front part is formed with a hole which has a varying width. Preferably, this is Hole designed with a slot geometry, which is connected at one end with a circular hole end, so that a keyhole-like surface geometry of the hole is designed.

The bearing bush is thus designed by the blind hole geometry of the cavity as encapsulated, so that a fluid passage is prevented. It is particularly advantageous if an outer geometry of the connection region, which then also belongs to the base body, is angularly formed, at least in certain regions. Preferably, an end of the connecting region which opens onto the abutment flange or the front flange of the bearing bush in its outer geometry is designed to have an e-corner, wherein the number n is between 3 and 8, preferably 6. By such a configuration, a rotationally secure insertion of this bearing bush in a hole, which has a compatible designed boundary edge design done.

It can be provided that the front part and the rear part of the bearing bush are designed as deep-drawn parts, in particular as sheet-metal deep-drawn parts. The rear part may have at its front or upper end pivoting flaps, so that these side flaps can also take over a further support function during assembly of the bearing bush to the household appliance component.

It can also be provided that the adjoining areas of the front part and the rear part have a compatible with each other and fitting precisely fitting angular geometry. As a result, a mechanically stable and torsion-proof coupling between these two parts is achieved, which can then be pressed or welded.

Further features of the invention will become apparent 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 combinations of features mentioned below in the description of the figures and / or shown alone in the figures, can be used not only in the respectively specified combination 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.

Fig. 1

eine perspektivische vereinfachte Darstellung eines Ausführungsbeispiels eines erfindungsgemäßen Haushaltsgeräts;

Fig. 2

eine perspektivische Teildarstellung des Haushaltsgeräts gemäß Fig. 1;

Fig. 3

eine perspektivische Darstellung eines Ausführungsbeispiels einer Haushaltsgerätekomponente mit einer spezifischen Geometrie eines Lochs bzw. einer Aussparung zur Aufnahme eines Anbauteils bzw. Anbauelements ;

Fig. 4

eine weitere perspektivische Darstellung der Ausführung in Fig. 3;

Fig. 5

eine vergrößerte Darstellung eines Teilausschnitts der Ansicht in Fig. 4 mit teilweiser Schnittdarstellung;

Fig. 6

eine perspektivische Darstellung eines Ausführungsbeispiels einer erfindungsgemäßen Lagerbuchse;

Fig. 7

eine perspektivische Darstellung eines separierten Halteelements der Lagerbuchse gemäß Fig. 6;

Fig. 8

eine perspektivische Schnittdarstellung der Lagerbuchse gemäß Fig. 6;

Fig. 9

eine transparente Darstellung eines weiteren Ausführungsbeispiels einer erfindungsgemäßen Lagerbuchse;

Fig. 10

eine perspektivische Darstellung eines weiteren Ausführungsbeispiels eines Halteelements der Lagerbuchse gemäß Fig. 9;

Fig. 11

eine transparente Darstellung eines weiteren Ausführungsbeispiels einer erfindungsgemäßen Lagerbuchse;

Fig. 12

eine perspektivische Darstellung eines Halteelements mit einem Befestigungselement der Lagerbuchse gemäß Fig. 11;

Fig. 13

eine perspektivische Darstellung eines weiteren Ausführungsbeispiels einer erfindungsgemäßen Lagerbuchse mit teilweiser Schnittdarstellung;

Fig. 14

eine weitere perspektivische Darstellung des Ausführungsbeispiels gemäß Fig. 13;

Fig. 15

eine weitere perspektivische Darstellung des Ausführungsbeispiels gemäß Fig. 13;

Fig. 16

eine Schnittdarstellung durch das Ausführungsbeispiel gemäß Fig. 13 bis 15 mit einem ersten Montagezustand eines Einhängegitters;

Fig. 17

eine Schnittdarstellung durch das Ausführungsbeispiel gemäß Fig. 13 bis 15 mit einem zweiten Montagezustand eines Einhängegitters;

Fig. 18

eine perspektivische Darstellung durch das Ausführungsbeispiel gemäß Fig. 17 mit einem zweiten Montagezustand eines Einhängegitters;

Fig. 19

eine weitere Schnittdarstellung durch das Ausführungsbeispiel gemäß Fig. 17 und 18 mit einem zweiten Montagezustand eines Einhängegitters;

Fig. 20

eine Schnittdarstellung durch ein weiteres Ausführungsbeispiel einer Lagerbuchse;

Fig. 21

eine Explosionsdarstellung eines weiteren Ausführungsbeispiels einer erfindungsgemäßen Lagerbuchse;

Fig. 22

eine Schnittdarstellung durch ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Lagerbuchse;

Fig. 23

eine Explosionsdarstellung eines weiteren Ausführungsbeispiels einer erfindungsgemäßen Lagerbuchse; und

Fig. 24

eine teilweise transparente Darstellung des zusammengesetzten Beispiels gemäß Fig. 23.

Embodiments of the invention are explained in more detail below with reference to schematic drawings. Show it:

Fig. 1

a simplified perspective view of an embodiment of a household appliance according to the invention;

Fig. 2

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

Fig. 3

a perspective view of an embodiment of a household appliance component with a specific geometry of a hole or a recess for receiving an attachment or add-on element;

Fig. 4

another perspective view of the embodiment in Fig. 3 ;

Fig. 5

an enlarged view of a partial section of the view in Fig. 4 with partial sectional view;

Fig. 6

a perspective view of an embodiment of a bearing bush according to the invention;

Fig. 7

a perspective view of a separated retaining element of the bearing bush according to Fig. 6 ;

Fig. 8

a perspective sectional view of the bearing bush according to Fig. 6 ;

Fig. 9

a transparent representation of another embodiment of a bearing bush according to the invention;

Fig. 10

a perspective view of another embodiment of a retaining element of the bearing bush according to Fig. 9 ;

Fig. 11

a transparent representation of another embodiment of a bearing bush according to the invention;

Fig. 12

a perspective view of a retaining element with a fastening element of the bearing bush according to Fig. 11 ;

Fig. 13

a perspective view of another embodiment of a bearing bush according to the invention with a partial sectional view;

Fig. 14

a further perspective view of the embodiment according to Fig. 13 ;

Fig. 15

a further perspective view of the embodiment according to Fig. 13 ;

Fig. 16

a sectional view through the embodiment according to Fig. 13 to 15 with a first mounting state of a suspension grid;

Fig. 17

a sectional view through the embodiment according to Fig. 13 to 15 with a second mounting state of a suspension grid;

Fig. 18

a perspective view of the embodiment according to Fig. 17 with a second mounting state of a suspension grid;

Fig. 19

a further sectional view through the embodiment according to FIGS. 17 and 18 with a second mounting state of a suspension grid;

Fig. 20

a sectional view through a further embodiment of a bearing bush;

Fig. 21

an exploded view of another embodiment of a bearing bush according to the invention;

Fig. 22

a sectional view through a further embodiment of a bearing bush according to the invention;

Fig. 23

an exploded view of another embodiment of a bearing bush according to the invention; and

Fig. 24

a partially transparent representation of the composite example according to Fig. 23 ,

In the figures, identical or functionally identical elements are provided with the same reference numerals.

In Fig. 1 is a schematic representation of a designed as a baking oven 1 household appliance for preparing food, which thus represents a cooking appliance shown. The oven 1 comprises a hob 2 with four cooking zones 3, 4, 5 and 6, which are to be understood only in the form and number and position by way of example. The hob 2 is also an optional embodiment of the oven 1. In addition, the oven 1 comprises a cooking chamber 7, which is limited by a muffle 8, which is a superordinate household appliance component. The muffle 8 comprises as domestic appliance components vertical side walls 9 and 10 and a bottom wall 11, a top wall 12 and a rear wall 13. The cooking chamber 7 is closed at the front by a door, not shown, and moreover comprises a control device, not shown, which have control elements and a display unit can.

On an inner side of the vertical side walls 9 and 10 recesses or holes 14, 15, 16 and 17 are formed. Both the number and the position of the holes 14 to 17 is merely exemplary and in addition corresponding openings are formed in the opposite vertical side wall 10 in a corresponding height and corresponding number. In the holes 14 to 17 bearing bushes are introduced as attachments or attachments, of which only the bushings 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 designed as a household appliance component support frame or suspension grid 20 ( Fig. 2 ) can one Food carrier, as in Fig. 2 is shown, and / or a rail extension 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.

Both the bearing bushes 18 and 19 and the Einhängegitter 20 may represent add-on parts, in particular, only the suspension grid 20 is a household appliance component.

The bushing 18 is a front bearing bush wherein the bearing bush 19 is the rear. This is considered with respect to the depth direction and thus the z-direction.

The bushing 18 includes a front flange or abutment flange having a front opening. Through this opening, a portion or an end of the household appliance component can be passed in the form of Einhängegitters 20. In particular, a free end of a guide rod 20a or 20b (FIG. Fig. 2 ) of the hanging grid 20 inserted therethrough.

In Fig. 3 is shown in a perspective view, the side wall 9 with the hole 14 in sections. It is a view on an outside 9a, which faces away from the cooking chamber 7 shown. The side wall 9 comprises a plate-like base body 21 which extends substantially in a plane, wherein the hole 14 extends with its hole plane in this plane of the plate-like base body 21. From this level rises a collar 22, which opens at a boundary edge 23 of the hole 14. The collar 22 is formed completely circumferential and closed.

In Fig. 4 is in a further perspective view of the side wall 9 with a view of an inner side 9b, which faces the cooking chamber 7 shown. It can be seen that the boundary edge 23 is formed with a number n = 6 corners. It thus represents a polygonal passage through which a rod 20a or 20b or a different element which is attached to a vertical support rod 20c (FIG. Fig. 2 ) is arranged, is insertable. This can be done directly, but preferably via a bushing 18, which is then inserted into the hole 14.

In Fig. 5 is a perspective sectional view of a partial section of the illustration in Fig. 4 shown here, wherein the sectional view along the section line VV is shown.

As in the view in Fig. 5 can be seen, the collar 22 in the direction of a hole axis A viewed on several consecutive inner surface portions. In this connection, an inner surface 24 of the collar 22 forms through the inner surface portions 24a, 24b and 24c. As in the sectional view in Fig. 5 can be seen, the inner surface 24 has a in the sectional plane perpendicular to the hole plane specifically designed contour that includes at least one rectilinear first contour portion 25a. This contour section 25a is formed at an end of the collar 22 facing away from the boundary edge 23 and ends at a free edge 26 of the collar 22.

In the direction of the delimiting edge 23, following this first rectilinear contour section 25a, a second contour section 25b follows, which is preferably also rectilinear.

The contour portion 25a is formed in particular parallel to the hole axis A. In contrast, it is preferably provided that the contour section 25b does not run parallel to the hole axis A, but extends slightly outwardly starting from the first contour section 25a.

It is preferably provided that adjoining the second contour section 25b is a third contour section 25c which ends at the boundary edge 23. This third contour section 25c is preferably curved, so that in the overall geometry of the collar 22 a funnel-like shape is formed.

In particular, it is also provided that a height of the contour section 25a is considered in the direction of the longitudinal axis A and thus a height parallel to the longitudinal axis A is smaller than a height of the contour section 25b that is parallel to the longitudinal axis A.

Preferably, an absolute length of the contour portion 25a in relation to the total length of the contour of the collar 22 is greater than 1/10, preferably greater than 1/8 of this total length.

Between the six corners of the boundary edge 23 boundary edge portions are formed which are rectilinear and are the same length or can be formed with different lengths. In the corners rounded transitions 27 are formed.

An angle α between the main body 21 and the collar 22 is adjustable over the steps and the upper radius of a structure provided as a die. In the context, it should be mentioned that the plate-like base body 21 is provided and a collar 22 may be preformed. In particular, it is provided that the collar 22 is produced by an embossing tool in a single processing step, and in particular the design of the inner surface portion 24a is defined with the first straight contour portion 25a defined by material sheared by the embossing tool.

In Fig. 6 is shown in a perspective view of a first embodiment of a bearing bush 18. The bearing bush 18 is in particular part of a device 28, which in addition to the bearing bush 18 in a Fig. 6 not shown side wall as a household appliance component having a hole 14 in which the bearing bush 18 is arranged. In particular, the geometry of the hole is as shown in FIGS Fig. 3 to 5 designed. However, it can also be provided another and in particular corner-free circular configuration of the boundary edge 23 as well.

The bearing bush 18 comprises a mushroom-shaped base body 29, which has a hollow-cylindrical rear part 30, on the front side of which a front flange or abutment flange 31 is arranged. The base body 29 comprises in particular in the rear part 30 a connecting region 32 which extends through the hole 14. In contrast, in the mounted state, the abutment flange 31 rests on the inside 9b.

For this purpose, a rear side 33 (FIG. Fig. 8 ) of the abutment flange 31, which may be preferably formed as a receptacle of a seal, not shown, for example in a recess on the back 33. As a result, a sealing engagement of the bearing bush 18 on the inside 9b can be achieved.

As from the illustration in Fig. 6 can be seen, the abutment flange 31 has a front opening 34 which includes a square boundary edge 35. About this opening 34, the suspension grid 20 is coupled to the bearing bush 18.

It is envisaged that the bearing bush 18 next to the base body 29 has a separate holding element 36 thereto. How to do it in Fig. 6 can be seen, this holding element 36 is sunk in the base body 29. This points to it as shown in Fig. 8 a cavity 37.

In the in 6 and 8 shown end state of the holding member 36 in the cavity 37, this is completely sunk therein and thus does not forward over the opening 34 via.

In Fig. 7 is an embodiment of the holding member 36 is shown in a perspective view. In this embodiment, it is designed as an integrally formed holding frame, which is realized as a sheet metal bent part or stamped part. The holding element 36 in this embodiment comprises a front plate 38, in which a through hole 39 is formed with varying width. In the exemplary embodiment, a slot geometry, to which at one end a circular hole end adjoins, is formed, so that a keyhole-like shape of the lead-through opening or through-hole 39 is formed. An edge geometry 40 of the front panel 38 is also polygonal and adapted in particular to the angular geometry of the boundary edge 35. As a result, a snug fit of the retaining element 36 can be achieved in the cavity 37 and a security against rotation are ensured.

The holding element 36 is preferably arranged non-destructively releasably in the cavity 37. This means that it can be repeatedly assembled and disassembled. In particular, it is provided that a six-cornered boundary edge 35 and a corresponding hexagonal edge geometry 40 are formed.

The holding element 36 comprises, in addition to the front plate 38, a rear wall 41 spaced therefrom and arranged parallel thereto. The latter is connected in one piece with two opposite connecting webs 42 and 43 with the front plate 38. The strip-shaped and step-shaped connecting webs 42 and 43 are also designed to fit accurately to the geometry of the cavity 37 defining walls.

The rear wall 41 comprises an engagement region formed as a laterally open hole 44, into which a fastening element 45 (FIG. Fig. 8 ), which may be formed for example as a screw, can intervene.

In addition, at least one connecting web 42, a retaining tab 46 is integrally formed, with this retaining tab 46 extends from the front panel 38 to the rear and to the axis B of the bearing bush 18 inclined towards. The retaining tab 46 is designed as a strip and bendable so that it engages behind an engaging Einhängegitter 20 in its end position in the bearing bush 18 and pulling along the axis B is prevented.

An embodiment of the retaining element 36, as in Fig. 7 is shown, is thus a torsion-resistant, yet filigree and weight-minimized holding frame, which can mechanically hold a suspension grid 20.

For mounting the holding frame in the form of the holding element 36 in the cavity 37, the fastening element 45 is preferably inserted into the hole 44 before insertion into the cavity 37 and holds itself, since a mounting head 47 (FIG. Fig. 8 ) has a larger diameter than the hole 44.

A module formed by the holding element 36 and the fastening element 45 is then inserted into the cavity 37 and with a mounting tool, the fastening element 45 can be actuated through the through-hole 39. In particular, in a configuration as a screw can by coupling the mounting tool with the Fastening head 47 screwing into an internal thread 48, which is formed on an inner side of the cavity 37 bounding walls done.

As from the illustration in Fig. 8 can be seen, the cavity 37 is formed as a blind hole and thus closed at the rear and the periphery and only accessible through the opening 34. Such a configuration is particularly advantageous in a baking oven 1, which is also designed as a steamer. The generated and prevailing steam in the cooking chamber 7 can then not escape via the bearing bush 18 from the cooking chamber 7 and thus do not reach outside of the cooking chamber 7 arranged components, so that they can not be affected in their function by the steam.

In Fig. 9 is shown in a further perspective view of an embodiment of a bearing bush, which is shown transparent. In this embodiment, it can be seen that an outer geometry of the base body 29 at an end 49 facing the abutment flange 31 has a polygonal geometry or an angular contour which is suitable for use in a hole according to the illustrations in FIG FIG. 3 to FIG. 5 is adjusted. As a result, a rotationally secure arrangement of the bearing bush 18 in the hole 14 can be achieved.

As shown by the transparent representation of the bushing 18 in Fig. 9 can be seen, the holding element 36 is different from the execution in Fig. 6 to 8 designed. The holding element 36 is here designed so that it has from the edge geometry 40 rearwardly projecting and cantilevered headband 50. These brackets 50 are plate-like or strip-shaped and are bent at the front plate 38 facing away from the free ends 51 to the axis B out or bent.

In addition, integrally formed in the holding brackets 50 locking tabs 52, which are designed for example as Fixierkralleen. About these locking tabs 52, the holding member 36 can be locked in the cavity 37 and thus fixed in position in the direction of the axis B.

It can be seen that the latching tabs 52 open at the bent ends 51 and are otherwise exposed. They are diagonally oriented and extend into radial direction at its free front ends on the headband 50 laterally, so that by a corresponding resilient action and the explained locking in the cavity 37 delimiting walls, which may have corresponding locking receptacles, is reached. In Fig. 9 For example, detent recesses 53 are indicated.

In Fig. 10 is in a separate perspective view of the holding member 36, as shown in Fig. 9 is shown.

A further embodiment of a bearing bush 18 with a base body 29 and a separately formed retaining element 36 is in 11 and FIG. 12 shown.

In this embodiment, in contrast to the embodiment in Fig. 6 to Fig. 8 provided that the cavity 37 is not limited to the rear and thus is not designed as a blind hole. A still fluid-tight configuration of the cavity 37 is achieved by the fastening element 45, which is screwed sealingly into an internal thread 48 of the base body 29. In addition, the fixing of the retaining element 36 to the fastening element 45 is achieved by means of a spring 54, which is arranged on the retaining element 36, and ensures that the suspension grid 20 is held. In Fig. 12 in turn, the separated state of the holding member 36 is shown with the fastener 45, whereas in Fig. 11 the assembled final state is shown in the cavity 37 and to a transparent representation of the bearing bush 18, in particular of the base body 29 is shown. By means of the spring 54, in particular, preferably the suspension grid 20, in particular the rod then extending into it held.

Also in this embodiment according to 11 and FIG. 12 For example, the outer geometry 49 can be formed without corners.

In Fig. 13 a further embodiment of a bearing bush 18 is shown. Also in this embodiment, the base body 29 is formed with a cavity 37. In this cavity 37, a holding device 55 is formed, in particular used. The holding device 55 can also be referred to as a holding element 36.

The holding device 55 is integrated here in the cavity 37, wherein the cavity 37 is formed as a blind hole. However, the holding device 55 may also be formed as a separate component and non-destructively releasably inserted into the cavity 37.

The holding device 55 comprises a gripping element 56, which has two spring tabs 57 and 58. These are integrally and integrally formed on a first side wall 59 which defines the cavity 57. The spring tabs 57 and 58 can be bent elastically to the side and receive a guide rod 20a or 20b or other fastening part on the support rod 20c of the hook-in grid 20 encompassing.

In addition, the holding device 55 comprises an at least one side formed securing web 60 which integrally formed on a second side wall 61 which is adjacent to the first side wall 59 and the cavity 37 also limited. In the illustration in Fig. 13 the rear part of the base body 29 is broken or cut so that it can be seen into the cavity 37 and the holding device 55 located therein can be seen. Preferably, the securing web 60 is formed as a plate with a circumferentially completely limited keyhole-shaped hole.

The securing web 60 is designed to be partially tapered at an end 62 remote from the gripping element 56. It is viewed in the direction of the axis B closer to the abutment flange 31 arranged as the Umgriffselement 56th

On the outer geometry 49, which is formed on an abutment 31 of the abutment end of the base body 29, and which is square, in particular designed hexagonal, a latching element 63 is formed in the upper region. This is thus formed on the connecting portion 32 of the bearing bush 18. As a result, the bearing bush 18 can be locked in a hole 14. In addition to an anti-rotation through the angular geometry thereby an axial position assurance is achieved.

In the context, it should also be mentioned in the exemplary embodiments that the axes A and B are parallel, in particular coincident.

In Fig. 13 Moreover, it can be seen that in the angular geometry 49, further radially outwardly adjustable flaps 64 and 65 (FIGS. Fig. 14 ) are formed. These can also contribute to further position fixation and intervene or be anchored at specific locations. In particular, they are attached to this outer geometry 49 via (film) hinges.

In Fig. 13 In addition, it can be seen that a depression 66 is provided on the rear side 33 for the already mentioned seal, wherein this depression is designed to be completely circumferential.

In Fig. 14 is a rear view shown in which the bearing bush 18 is inserted in the hole 14.

In Fig. 15 Then, the end position of the bearing bush 18 is shown in the hole 14, it being noted that the tabs 64 and 65 are set to the outside and thus the position fixing in the direction of the axis A and B is reached.

The bushing 18 may preferably be made as, in particular one-piece, MIM component.

In Fig. 16 is a sectional view of the bearing bush 18 according to Fig. 13 which shows an intermediate mounting state of the suspension grid in the bearing bush 18.

It will be appreciated that, for example, the rod 20b is inserted into the cavity 37. The otherwise in particular corner-free cross section of the rod 20b is partially flattened, so that it can be introduced via a specific position on the opening 34 and can be guided past the securing web 60 at a certain height. If this rod 20b has then reached its end position in the direction of the axis B, then the securing web 60 is located in the region of the flattened portion 67 of the rod 20b. The rod can then be pushed down and reached according to the sectional view in Fig. 17 his final position in which he is then surrounded and held by the Umgriffselement 56. A release can only be achieved by the rod 20 b is lifted vertically upwards and then pulled out after disengagement from the Umgriffselement 56 in the direction of the axis B again can. But this only when the rod 20b is located in the tapered or widening portion 62 of the securing web 60, since only then the rod 20b no longer engages in the flattened region 67 and thus no longer locks it axially.

In Fig. 18 is a perspective view of the mounted final state, as shown in Fig. 17 shown is shown.

In Fig. 19 is a sectional view of the embodiment according to FIGS. 17 and 18 shown from the rear, wherein the sectional plane perpendicular to the axis B extends. In addition, the bushing 18 is shown mounted in the hole 14 final state.

In Fig. 20 is a sectional view of another embodiment of a bearing bush 18 is shown. In contrast to the other embodiments here no Umgriffselement 56 is formed, but on a third side 68 obliquely downwardly and rearwardly oriented securing web 69, which is associated with the holder device 55 is formed.

In addition, in the cavity 37, a partition wall 70 is formed, which has a passage opening 71 through which the Einhängegitter 20 can be passed. This is analogous to the securing web 60 when it is formed as a plate, and has a circumferentially completely limited hole. As shown in the illustration Fig. 20 can be seen, the securing web 69 and the securing tab is flexibly movable and can engage behind the flattened portion 67 in the assembled end state of the rod 20b, so that here also an axial securing is achieved.

As in Fig. 2 is shown, the partition wall 70 is set back to the opening 34 and also spaced from the rear rear wall which bounds the cavity 37 at the back, so that the partition wall 70 divides the cavity 37 into two partial spaces.

In Fig. 21 a further embodiment of a bearing bush 18 is shown, in which case two separate components are initially shown. The bearing bushes are integrally formed, in which embodiments, as previously explained, can be implemented as made of a block or a blank MIM parts.

Under a one-piece design, however, an embodiment according to Fig. 21 understood, in which first a front part 72 and a separate rear part 73 are provided. The two parts 72 and 73 are both pot-shaped in the embodiment and realized as thermoforming components. They are then joined together and then according to the lower image representation according to the front view in Fig. 21 non-detachably connected non-destructively, wherein a pressing or welding can be provided here. In this case, the cup-shaped rear part 73 is pushed over the cup-shaped region of the front part 72 and then generates a corresponding welding or pressing on the overlapping areas in the end position.

As in Fig. 21 it can be seen, corresponding tabs 64 and 65 are integrally formed on the rear part 73 here.

In Fig. 22 is a sectional view through a finished made component shown in the form of the bearing bush. A partition wall 70 is formed here by the bottom or a rear wall of the cup-shaped front part 72.

The statements according to Fig. 21 and Fig. 22 can as well as the following remarks in FIGS. 23 and 24 be realized as so-called Bihlerteil.

For this purpose, the individual parts 72 and 73 are fed to a corresponding production machine and then created a corresponding connection.

In Fig. 23 a separated representation of a further embodiment of a bearing bush 18 is shown. This one is different from the version in Fig. 21 and 22 provided that the cup-shaped parts 72 and 73 have sections with polygonal outer geometry, which are then pushed over one another and non-destructively non-destructively connected to each other, in particular be pressed or welded. Moreover, these regions 72a and 73a are slightly funnel-shaped and thus conically tapered or, in the case of the region 73a, slightly widening.

In addition, a separate element 74 is provided, which integrally the Umgriffselement 56 and the retaining tab 69 has. During assembly, this component 74 is first applied to the region 72a of the front part 72 and then the rear part 73 is pushed. In addition, a sealing ring 75 is shown, which is then still applied.

In Fig. 24 is the assembled state of the bushing 18 according to Fig. 23 shown. The securing ridge 60 can, as shown in FIG Fig. 13 be formed asymmetrically on one side. However, it may also be part of the partition wall 70 with the keyhole-shaped hole 71, so that the illustration in Fig. 13 and Fig. 20 only the sectional view of such a design of a partition wall 70 with a keyhole-shaped hole 71 is such.

As an alternative to the tabs 64 and 65 may also be provided a separately deferred U-shaped retaining spring, which then allows the axial position securing the bearing bush 18 in the hole 14.

The sealing ring 75 may preferably be a silicone gasket.

By adapting the conventional socket suspensions geometrically similar or identical suspension grids can be used, which can then be used for steam ovens or non-steam ovens. This material costs can be achieved by the standardization of parts and a simplified mounting of Einhängegestellen and a uniform attachment principle can be achieved.

LIST OF REFERENCE NUMBERS

1

oven

2

hob

3, 4, 5, 6

cooking zones

7

oven

8th

muffle

9

Side wall

9a

outside

9b

inside

10

Side wall

11

bottom wall

12

ceiling wall

13

rear wall

14, 15, 16, 17

holes

18, 19

bushings

20

hook in racks

20a, 20b

guide bars

20c

retaining bar

21

body

22

collar

23

boundary edge

24

palm

24a, 24b, 24c

Inner surface portions

25a, 25b, 25c

contours sections

26

edge

27

transitions

28

contraption

29

base body

30

rump

31

abutment

32

connecting area

33

back

34

opening

35

boundary edge

36

retaining element

37

cavity

38

front panel

39

Through-hole

40

edge geometry

41

rear wall

42

connecting web

43

connecting web

44

hole

45

fastener

46

retaining tab

47

fastening head

48

inner thread

49

The End

50

headband

51

end up

52

locking tabs

53

locking receivers

54

feather

55

holder

56

Umgriffselement

57

spring shackle

58

spring shackle

59

First sidewall

60

securing web

61

Second side wall

62

The End

63

locking element

64

flap

65

flap

66

deepening

67

section

68

page

69

securing web

70

partition wall

71

Through opening

72

part

72a

Area

73

part

73a

Area

74

element

75

sealing ring

α

angle

A

axis

B

axis

Claims (15)

Bearing bush (18, 19), which is designed to support a household appliance component (20) on a household appliance component (9 to 13), and the bearing bush (18, 19) has a rear connecting region (32) for insertion into a hole (14 to 17). in the household appliance component (9 to 13), on the front side a abutment flange (31) for abutment on an upper side (9a, 9b) of the household appliance component (9 to 13) is formed, characterized in that the bearing bush (18, 19) a Base body (29) having a front accessible cavity (37) for receiving the household appliance component (20) which is formed as a blind hole. Bearing bush (18, 19) according to claim 1, characterized in that the base body (29) is pot-shaped and has the abutment flange (31). Bearing bush (18, 19) according to claim 1 or 2, characterized in that on a rear side (33) of the abutment flange (31) of the base body (29) has a recess (66) for receiving a seal is formed. Bearing bush (18, 19) according to one of the preceding claims, characterized in that in the cavity (37) has a holding device (55) for the household appliance component (20) is formed. Bearing bush (18, 19) according to claim 4, characterized in that the holding device (55) has at least one Umgriffselement (56) with two spring tabs (57, 58). Bearing bush (18, 19) according to claim 5, characterized in that the Umgriffselement (56) on a cavity (37) defining the first side wall (59) is arranged. Bearing bush (18, 19) according to one of claims 4 to 6, characterized in that the holding device (55) has at least one securing web (60) which extends extends at least partially over the height of a second side wall (61) and is designed for axial retention of the household appliance component (20). Bearing bush (18, 19) according to claim 5 or 6 and claim 7, characterized in that the securing web (60) of a front opening (34) of the cavity (37) is arranged closer lying than the Umgriffselement (56) and on a Umgriffselement (46) facing away from the end (62) is formed tapered. Bearing bush (18, 19) according to one of claims 4 to 8, characterized in that the holding device (55) has a retaining lug (69) for holding the household appliance component (20), which at one of the cavity (37) bounding the third side wall (68 ) and extends obliquely into the cavity (37). Bearing bush (18, 19) according to one of the preceding claims, characterized in that on an outer side of the connecting region (32) has a latching element 63) for fastening the base body (29) in the hole (14 to 17) is formed. Bearing bush (18, 19) according to one of the preceding claims, characterized in that it is formed in one piece. Bearing bush (18, 19) according to claim 11, characterized in that a front part (72) and a cup-shaped rear part (73) are non-destructively connected non-destructively, in particular pressed or welded. Bearing bush (18, 19) according to any one of the preceding claims, characterized in that in the cavity (37) a partition wall (70) is arranged with a passage hole (71) of varying width. Domestic appliance (1) for preparing food, comprising a muffle (8) having a side wall (9, 10) in which a hole (14 to 17) is formed, in which a bearing bush (18, 19) according to one of preceding claims is arranged. Method for producing a bearing bush (18, 19) which is designed to mount a household appliance component (20) on a household appliance component (9 to 13), and the bearing bush (18, 19) has a rear connecting region (32) for insertion into a hole (14 17 to 17) in the household appliance component (9 to 13), on the front side an abutment flange (31) for abutment on an upper side (9a, 9b) of the household appliance component (9 to 13) is formed, characterized in that the bearing bush (18, 19) is formed with a base body (29) having a front accessible cavity (37) for receiving the household appliance component (20), which is formed as a blind hole.

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