DE102009047687A1 - Household appliance device useful for making food, comprises a plastic component, which is formed in an injection molding process and in which a metallic retaining element is introduced by overmolding, and a mounting component - Google Patents

Abstract

The household appliance device comprises a plastic component, which is formed in an injection molding process and in which a metallic retaining element is introduced by overmolding with the plastic material in the plastic component, and a mounting component, which is connected with the plastic component. The connection is formed as pressure joining connection between a metallic region of the mounting component and the retaining element of the plastic component. The plastic component is a frame or a decorative frame (3) for a hob (1). A cover upper part is formed from a metallic material. The household appliance device comprises a plastic component, which is formed in an injection molding process and in which a metallic retaining element is introduced by overmolding with the plastic material in the plastic component, and a mounting component, which is connected with the plastic component. The connection is formed as pressure joining connection between a metallic region of the mounting component and the retaining element of the plastic component. The plastic component is a frame or a decorative frame (3) for a hob (1). A cover upper part is formed from a metallic material on the upper side of the plastic component and is injection molded with the plastic material of the plastic component. The cover upper part is a film made of stainless steel or aluminum. Independent claims are included for (1) a household appliance for making food; and (2) a method for producing a household appliance device.

Description

The invention relates to a domestic appliance device with a plastic component, which is formed in an injection molding and in which at least one metallic holding element is introduced by encapsulation with the plastic material in the plastic component. The home appliance device further comprises a mounting component, which is connected to the plastic component. Furthermore, the invention relates to a domestic appliance with such a domestic appliance device as well as a method for producing a domestic appliance device.

Hobs usually have a decorative frame, which surrounds a storage tray for preparation container, which is formed for example of glass ceramic, circumferentially and carries. This decorative frame is also usually connected to a mounting frame, wherein the entire hob is mounted on the mounting frame to a mounting portion, such as in a recess of a worktop.

Conventional decorative frames are usually made of stainless steel, and therefore very expensive. Moreover, such a configuration only a limited mold formation of the decorative frame possible, especially with regard to very small radii on the edges of the decorative frame, since the flexibility of the relatively thick stainless steel smaller radii does not allow.

From the DE 195 21 690 A1 is a glass ceramic well with a glass ceramic plate known. The glass ceramic plate is wrapped on the circumference of a molded plastic frame. The plastic frame itself is thus attached by specific assembly, namely by injection, to the glass ceramic plate. The upper side of the plastic frame is formed by a protective covering that moves around the glass ceramic plate, which can also be metal, for example. This protective frame may for example be made of stainless steel, where it is merely inserted into a plastic frame and glued there.

In addition, from the DE 102 02 405 B4 a holder for a glass ceramic plate for a hob known. Again, the glass ceramic plate is provided with a holder which is made of an addition-crosslinkable, hot vulcanizable two-component liquid silicone rubber, in this respect also a corresponding compound of the glass ceramic plate is formed. In this holder may be a mounting element which is formed, for example, as a bendable sheet metal tab or as a socket cast. This then serves for connection to a mounting section. The connection in this regard is provided only by plugging with an additional connection element, so that it is complex and complex with a larger assembly cost.

It is an object of the present invention, a home appliance device, as well as a domestic appliance with such a device and also to provide a method for producing a home appliance device, which is on the one hand reduced component and ensures a reliable and low-effort to be created connection between the plastic component and the mounting component ,

This object is achieved by a domestic appliance device having the features of claim 1, a domestic appliance having the features of claim 7, and a method comprising the features of claim 9.

A domestic appliance device according to the invention comprises a plastic component, which is formed in an injection molding process, and in which at least one metallic holding element is introduced by encapsulation with the plastic material in the plastic component. The home appliance device further comprises at least one mounting component, which is connected to the plastic component. The connection between the mounting component and the plastic component is formed between a retaining element of the plastic component and a metallic region of the mounting component. In addition, this compound is quite specifically a Druckfügeverbindung. By such a configuration, a component saving can be achieved because no separate components are required to additionally use the connection between the mounting component and the plastic component. Last but not least, it also reduces manufacturing costs and enables faster production. By also the corresponding components can be saved, especially in Vebindungsbereich, also a weight saving of the home appliance device can be achieved. Especially in view of the fact that anyway a weight-saving design is designed to the effect that a plastic component is used in the device, the weight reduction can be further reduced by this specific connection at the specific location between the mounting member and the plastic component.

Preferably, the plastic component is a frame. In particular, it is provided that the plastic component is a decorative frame for a hob. Just here, therefore, very specific weight-reduced embodiments can be achieved, which in a very special degree with regard to the connection with a mounting frame trained mounting component receives a particularly mechanically stable and durable connection through this Druckfügeverbindung. Also referred to as Toxverbindung Druckfügeverbindung ensures a particularly stable connection between metallic areas of different separate components and is thus formed without any further connection component solely by the appropriate deformation in the pressure joining as a secure connection.

Preferably, a Abdeckoberteil is formed from a metallic material on the upper side of the plastic component. In addition to corresponding designerischen aspects can thus be formed in comparison with conventional decorative frame a corresponding stability with appropriate optics, in comparison to full solid Metallzierrahmen a weight saving is achieved by the plastic component has this plastic support on which the metallic Abdeckoberteil is arranged.

Preferably, the Abdeckoberteil is back-injected with the plastic material of the plastic component. This is thus a particularly reliable and durable connection, so that the back-injected plastic material is used as a carrier for the Abdeckoberteil in a reliable manner.

Preferably, the cover shell is a foil made of stainless steel or aluminum. As a result, a particularly specific deformation and further weight savings can be achieved. By such a thin metallic film very specific bends and radii can be adjusted to a particularly small extent, which can not be achieved with conventional decorative frames that are made of solid stainless steel. As a result, very specific new shapes for the decorative frame can be made possible, whereby different space designs are possible.

Furthermore, the invention relates to a domestic appliance, in particular for preparing food, in particular a hob, which has a domestic appliance device according to the invention or an advantageous embodiment thereof.

Preferably, the decorative frame surrounds a mounting plate, which is formed of glass or glass ceramic and is provided for setting up preparation containers, peripherally and is detachably connected to the mounting plate. This means that the frame is not directly connected to the mounting plate inextricably, for example, it is molded on it, as is the case in the prior art, but that in this regard a non-destructive releasable, for example mechanical connection is provided. As a result, the reversible separability and composability of these components can be ensured for replacement purposes, assembly purposes or maintenance.

Furthermore, the invention relates to a method for producing a domestic appliance device which has a plastic component. The plastic component is formed in an injection molding process and at least one metallic holding element is introduced. This introduction takes place during the injection molding process for producing a plastic component, wherein the retaining element is introduced into a corresponding injection mold and is overmolded with the plastic material. In addition, the plastic component is connected to a mounting component. The connection is formed between a metallic region of the mounting component and the holding element of the plastic part, and it is specifically designed as a pressure-joining connection.

Advantageous embodiments of the home appliance device according to the invention are to be regarded as advantageous embodiments of the method according to the invention.

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, in particular also the features and feature combinations shown in the figure description and / or only in the figures alone, can be used not only in the respectively indicated combination but also in other combinations or alone, without the frame to leave the invention.

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

1 a partial perspective view of an embodiment of a hob according to the invention;

2 a first sectional view of the hob according to 1 ;

3 a second sectional view of the hob according to 1 ; and

4 a plan view of the hob according to 1 ,

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

In 1 is a cooking field in a partial perspective view 1 shown which is a mounting plate 2 as a glass ceramic plate. The mounting plate 2 on which cooking pots, pans and the like can be placed, is circumferentially by a decorative frame 3 edged, which the mounting plate 2 holds and non-destructively releasably connected to this. In addition, the hob includes 1 a mounting frame 4 , which with the decorative frame 3 is connected, with respect to this connection exclusively pressure joints are provided and thus no further screw, rivet or the like are provided. Additional fasteners are thus not provided here.

In 2 is in a first exemplary sectional view of a part of the hob 1 in the area of the decorative frame 3 and the mounting frame 4 shown. As can be seen in the sectional view includes the decorative frame 3 a very thin metallic cover shell 5 which is a thin film. This cover shell 5 For example, a foil may be made of stainless steel and have a thickness between 0.2 mm and 0.3 mm. The cover shell 5 However, it may also be an aluminum foil and have a thickness between 0.3 and 0.5 mm. With regard to the provision, the cover shell 5 preferably be punched out of a metal plate, are formed and then have a desired shape. This is followed by this preformed cover shell 5 then leave in the punching and forming tool, which also serves as an injection mold. In a subsequent method step, the top cover is then back-injected with a plastic material, which then automatically with this plastic material, a support frame 6 is formed, which with the Abdeckoberteil 5 is firmly connected. When making the decorative frame 3 is thus automatically by the back injection of the Abdeckoberteils 5 made a connection with this and due to the shape specification of the injection mold of the support frame 6 automatically formed in its shape. In the embodiment shown, it can be seen that over the entire horizontal width (x-direction) of the support frame 6 on its upper side through the cover shell 5 is covered. When looking at the hob 1 from above is thus with regard to the decorative frame 3 only the metallic cover shell 5 seen. In the carrier frame 6 are recesses 7 and 8th formed, in which in the following seals can be integrated or introduced. This can thus be a sealing connection between the decorative frame 3 and the mounting plate 2 with regard to the recess 8th be achieved. In addition, it is envisaged that in the support frame 6 circumferentially around the mounting plate 2 a plurality of retaining elements 9 is injected, which are hook-shaped in the embodiment and are made of sheet steel. In the formed plastic carrier frame 6 Thus, integral holding elements made of a different material are introduced, it being possible to provide that the holding elements 9 prefabricated and inserted into the injection mold and then with the plastic of the support frame 6 to be overmoulded.

The stove top 1 also includes a mounting frame 4 , which by Druckfügeverbindungen with the decorative frame 3 as already mentioned above, wherein the pressure joints between a metallic portion of the mounting frame 4 and the holding element 9 is trained.

In 3 is another schematic sectional view at another point of the hob 1 shown. It can be seen that in the support frame 6 next to the recesses 7 and 8th , which are formed, for example, for seals, also integrated further functional components, in particular injected are attached. For this purpose, in the embodiment shown, a light guide 10 in the carrier frame 6 injected, which makes light of a light source 11 in the hob 1 is arranged on the top 12 the Abdeckoberteils 5 can be brought and thus be observed by the user. For example, a residual heat indicator can be realized thereby, which can be displayed adjacent close to the respective cooking zone. In this context, for example, an optical display at the location 13 done so that this can be displayed selectively or as a luminous strip.

In particular, it is provided that in the production of the decorative frame 3 after molding the top of the cover 5 in the injection mold, an adhesive can be introduced, which in the subsequent injection of the plastic and due to the then prevailing spray temperature dissolves and the operative connection for bonding the metallic Abdeckoberteils 5 with the injected plastic material for forming the support frame 6 generated.

In 4 is a schematic plan view of the hob 1 shown, with the storage tray 2 is shown transparent, so that the radiators arranged underneath 14 . 15 . 16 and 17 with which cooking zones arranged above it are heated, are visible. The circumference around the mounting plate 2 circumferential cover shell 5 of the decorative frame 3 is shown, in addition adjacent to the respective cooking zones and thus also to the radiators 14 to 17 the places or places 13 . 18 . 19 and 20 , with which the residual heat of the individual cooking zones are visually displayed, are shown.

LIST OF REFERENCE NUMBERS

1

hob

2

mounting plate

3

decorative frame

4

mounting frame

5

Abdeckoberteil

6

support frame

7, 8

recesses

9

retaining elements

10

optical fiber

11

light source

12

top

13, 18, 19, 20

optical displays

14, 15, 16, 17

radiator

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19521690 A1 [0004]
• DE 10202405 B4 [0005]

Claims (9)

Domestic appliance device with a plastic component ( 3 ), which is formed in an injection molding process and in which at least one metallic retaining element ( 9 ) by encapsulation with the plastic material in the plastic component ( 3 ) is introduced, and a mounting component ( 4 ), which with the plastic component ( 3 ), characterized in that the connection between a metallic region of the mounting component ( 4 ) and the retaining element ( 9 ) of the plastic component ( 3 ) and is designed as Druckfügeverbindung. Domestic appliance device according to claim 1, characterized in that the plastic component ( 3 ) is a frame. Domestic appliance device according to claim 2, characterized in that the plastic component is a decorative frame ( 3 ) for a hob ( 1 ). Domestic appliance device according to one of the preceding claims, characterized in that on the upper side of the plastic component ( 3 ) a cover ( 5 ) is formed of a metallic material. Domestic appliance device according to claim 4, characterized in that the Abdeckoberteil ( 5 ) with the plastic material of the plastic component ( 3 ) is injected behind. Domestic appliance device according to claim 4 or 5, characterized in that the Abdeckoberteil ( 5 ) is a foil made of stainless steel or aluminum. Domestic appliance, in particular for preparing food, which has a domestic appliance device according to one of the preceding claims. Domestic appliance according to claim 7, characterized in that the decorative frame ( 3 ) a mounting plate ( 2 ) circumferentially surrounds and releasably connected to the mounting plate ( 2 ) connected is. Method for producing a household appliance device with a plastic component ( 3 ), which is formed in an injection molding process and in which at least one metallic holding element ( 9 ) is introduced and overmolded with the plastic material, and the plastic component ( 3 ) with a mounting component ( 4 ), characterized in that the connection between a metallic region of the mounting component ( 4 ) and the retaining element ( 9 ) of the plastic component ( 4 ) and is formed as Druckfügeverbindung.

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