EP3205943B1 - Household cooking appliance - Google Patents

Description

The present invention relates to a domestic cooking appliance.

A domestic cooking appliance, for example an oven, can have a receiving area, in particular an oven muffle, and a door which is set up to close the receiving area at the front. A lighting device for illuminating the inside of the receiving area can be provided in or on the door. In order to enable easy dismantling of the door, it is necessary that an easily separable electrical interface is formed between the door and the receiving area. In particular, a wireless electrical interface is to be provided between the door and the receiving area.

The DE 10 2007 057 767 A1 describes a domestic cooking appliance with a receiving area and a door which has a light source. A first electrical contact is arranged on the door and a second electrical contact is arranged on the device side on the receiving area, which can be electrically coupled to the first electrical contact for supplying energy to the light source, depending on an operating position of the door.

The US 2009/0039068 A1 shows a household appliance with a receiving area and a door hinged pivotably on the receiving area. The household appliance comprises an electrical circuit with a first electrical contact point provided on the receiving area and a second electrical contact point provided on the door which, when the door is closed, makes contact with the first electrical contact point to close the electrical circuit. The second electrical contact point has a contact element which is resiliently mounted in the door.

Against this background, it is an object of the present invention to provide an improved domestic cooking appliance.

Accordingly, a domestic cooking appliance, in particular an oven, is proposed. The household cooking appliance comprises a receiving area which has a loading opening, a pivotably hinged door on the receiving area to close the loading opening, a lighting device provided in or on the door for illuminating the inside of the receiving area, a first electrical contact point provided on the door, a second contact point provided on the door, a first contact device for electrically contacting the first contact point and a second contact device for electrically contacting the second contact point, wherein in a closed position of the door, in which the contact devices contact the respective contact points, a circuit comprising the lighting device is closed, wherein in an open position of the door, in which the contact devices the respective Do not contact contact points, the circuit comprising the lighting device is open, and each contact device has a housing connected to the receiving region and a K received in the housing having ontaktstift with a linearly displaceable contact portion along a longitudinal direction of the housing for contacting the respective contact point. Each contact device is attached to a hinge provided on the side of the receiving section.

The domestic cooking appliance is preferably an oven. The domestic cooking appliance can also be a microwave appliance or an oven with a microwave function. The receiving area can be an oven muffle or a muffle of the domestic cooking appliance. The housing of each contact device preferably has a cylindrical receiving section in which the contact pin is received. The receiving section of the housing is preferably designed to be rotationally symmetrical to a central axis. The longitudinal direction of the housing is arranged parallel to this central axis. The contact pin preferably comprises a housing which is fixedly fixed to the housing of the respective contact device and the contact section which can be displaced relative to this housing. A spring force is applied to the contact section. Furthermore, the contact pin also comprises a cable receiving section to which an electrical cable of the circuit is connected. The contact section preferably has a hemispherical or dome-shaped geometry on the front side. In particular, when the door is closed, the contact section rests against an inner side thereof. Furthermore, in the closed position of the door, the contact section is spring-biased against the inside of the door.

The lighting device preferably comprises a light-emitting diode (LED). The lighting device can be operated with a direct voltage. The first electric marriage The contact point and the first contact device can form a positive pole, and the second electrical contact point and the second contact device can form a negative pole or vice versa of the circuit. The circuit includes a power source, for example a direct voltage power source, the lighting device, cabling and the contact points and the contact devices assigned to the contact points. The LED is mounted on a printed circuit board, the LED preferably being received in a spacer. The light yield can be increased with the aid of the spacer, since the spacer prevents light from being radiated from the side. For this purpose, the spacer can additionally be provided with a reflective surface. The spacer is preferably arranged in a funnel shape around the diode.

The spacer can also be used to define a distance between the LED and a light-conducting glass rod. The lighting device preferably comprises a first light-guiding glass rod and a second light-guiding glass rod, which are arranged on both sides of a viewing window of the door. The light-guiding glass rods run in a vertical direction. With the help of the light-conducting glass rods, the light emitted by the LED is guided to the viewing window and from there into the interior of the receiving area. Complicated kinematics can be dispensed with because the contact section is only displaced linearly when the door is opened and closed. As a result, the contact devices are particularly durable.

According to one embodiment, the first contact point and the second contact point are arranged directly adjacent to one another.

For example, the first contact point and the second contact point are both arranged on a first side edge or both on a second side edge of the door. Complicated cabling and cable routing can thereby be dispensed with. Alternatively, the first and the second contact point can be provided at a distance from each other on two side edges of the door.

According to a further embodiment, the first contact device and the second contact device are arranged directly adjacent to one another.

For example, the first contact device and the second contact device are both arranged on the first side edge or both on the second side edge of the door. Complicated cabling and cable routing can thereby be dispensed with. Alternatively, the first and the second contact device can be provided at a distance from one another on two side edges of the door.

According to a further embodiment, the domestic cooking appliance further comprises at least one door contact switch which can be activated at a first opening angle of the door in order to apply an electrical voltage to the contact devices, the contact devices contacting the contact points at a second opening angle of the door that differs from the first opening angle and wherein the first included angle is smaller than the second included angle.

What is achieved hereby is that the contact devices and the contact points are only subjected to a voltage when the contact sections of the contact pins are in touching contact with the respective contact points. This can prevent the occurrence of an arc, since the contact sections are not yet subjected to voltage when they are shortly before contact with the contact points. This prevents excessive wear on the contact points and / or the contact sections.

According to a further embodiment, the contact points are received in receiving sections provided on the inside of the door.

The contact points can be clipped, pressed and / or glued into the receiving sections. The contact points are soldered to cables or connected to cables with the help of plugs.

According to a further embodiment, the domestic cooking appliance further comprises a contact point carrier which is fastened on the inside of the door and which has the receiving sections and which is made of a plastic material.

Because the contact point carrier is made from a plastic material, additional electrical insulation of the contact points can be dispensed with.

According to a further embodiment, the contact pin is spring-loaded.

For this purpose, as already explained above, a spring is provided in the housing of the contact pin. The spring is preferably a compression spring. This ensures that the contact sections of the contact pins are spring-biased against the door in the closed position of the door. This ensures reliable contact between the contact pins and the contact points when the door is closed.

Each contact device is fastened to a hinge provided on the side of the receiving section.

Each hinge preferably has a hinge element which is attached to the side of the receiving area. Such a hinge element is assigned to each contact device. The hinges are designed so that the door can be easily separated from the receiving area without additional tools.

According to a further embodiment, the housing has an engagement section which, for fastening the contact devices to the hinges, is designed to engage in a form-fitting manner in the respective hinge or to grip around it.

An opening is preferably provided on the respective hinge, into which the engagement section engages in a form-fitting manner. As a result, the housing of the contact devices can be mounted very easily on the hinges.

According to a further embodiment, the housing can be displaced linearly along the respective hinge in order to adjust its position.

In this way, tolerances can be compensated for, and the opening angle at which the contact devices contact the contact points assigned to them can be set easily and conveniently. To adjust the position of the housing on the respective hinge, an opening, in particular an elongated hole, can be provided on each hinge element, into which the engagement section engages and along which the engagement section can be linearly displaced. The contact devices can each with Screws are fixed to the hinges. For this purpose, fastening points, in particular threaded bores, are provided on the hinges. An elongated hole in which a screw is guided can be provided on the housing of the contact devices. This enables the contact devices to be positioned on the hinges and the opening angle to be set easily and conveniently.

According to a further embodiment, the engagement section has two gripping arms, which are designed to engage in an opening provided on the respective hinge.

The gripping arms are preferably designed as snap hooks. The gripping arms are resiliently deformable and, when the engagement section is pressed into the opening provided on the respective hinge, snap into the latter in order to connect the housing to the respective hinge with a positive fit.

According to a further embodiment, the contact pin and a stop for the contact pin are received in the housing, the housing being closed with the aid of a cap snapped into it.

The stop and the cap are preferably made of a plastic material. The cap preferably comprises snap hooks which are set up to snap into openings provided on the receiving section of the housing. This enables simple assembly of the cap. The stop preferably has a disk-shaped base section and arm section extending out of the disk-shaped base section, between which the housing of the contact pin is arranged. Recesses for cable routing can also be provided on the arm sections. Alternatively, the cap can also be formed in one piece with the receiving section.

According to a further embodiment, the housing has a base plate with a cable guide.

The cable guide is preferably provided on the back of the base plate. As a result, the cable is hidden. The cable guide can be designed to deflect the cable through an angle of 90 °.

According to a further embodiment, the housing is made of a plastic material.

For example, the housing can be made from a polybutylene terephthalate (PBT). The housing can also be made from another alternative plastic material. As a result, the housing can be manufactured inexpensively in large numbers in a plastic injection molding process.

According to a further embodiment, the contact pins are arranged perpendicular to an inside of the door in the closed position of the door.

This always ensures sufficient contact pressure and sufficient contact between the contact pins and the contact points assigned to them.

Further possible implementations of the domestic cooking appliance also include combinations, which are not explicitly mentioned, of features or embodiments described above or below with regard to the exemplary embodiments. The person skilled in the art will also add individual aspects as improvements or additions to the respective basic shape of the domestic cooking appliance.

Fig. 1

zeigt eine schematische perspektivische Ansicht einer Ausführungsform eines Haushaltsgargeräts;

Fig. 2

zeigt eine weitere schematische perspektivische Ansicht des Haushaltsgargeräts gemäß Fig. 1;

Fig. 3

zeigt eine schematische Ansicht einer Ausführungsform einer Tür für das Haushaltsgargerät gemäß Fig. 1;

Fig. 4

zeigt eine schematische Ansicht einer weiteren Ausführungsform einer Tür für das Haushaltsgargerät gemäß Fig. 1;

Fig. 5

zeigt eine schematische Explosionsansicht einer Ausführungsform einer Kontakteinrichtung für das Haushaltsgargerät gemäß Fig. 1;

Fig. 6

zeigt eine schematische perspektivische Ansicht einer Ausführungsform eines Anschlags für die Kontakteinrichtung gemäß Fig. 5;

Fig. 7

zeigt eine schematische perspektivische Ansicht einer Ausführungsform einer Kappe für die Kontakteinrichtung gemäß Fig. 5;

Fig. 8

zeigt eine schematische Seitenansicht des Haushaltsgeräts gemäß Fig. 1;

Fig. 9

zeigt eine weitere schematische Seitenansicht des Haushaltsgeräts gemäß Fig. 1;

Fig. 10

zeigt eine weitere schematische Seitenansicht des Haushaltsgeräts gemäß Fig. 1;

Fig. 11

zeigt eine weitere schematische Seitenansicht des Haushaltsgeräts gemäß Fig. 1;

Fig.

12zeigt eine schematische Seitenansicht einer weiteren Ausführungsform einer Kontakteinrichtung für das Haushaltsgerät gemäß Fig. 1;

Fig. 13

zeigt eine schematische Rückansicht der Kontakteinrichtung gemäß Fig. 12;

Fig. 14

zeigt eine schematische Seitenansicht der Kontakteinrichtung gemäß Fig. 5;

Fig. 15

zeigt eine schematische Rückansicht der Kontakteinrichtung gemäß Fig. 5;

Fig. 16

zeigt eine schematische Seitenansicht einer weiteren Ausführungsform einer Kontakteinrichtung für das Haushaltsgerät gemäß Fig. 1;

Fig. 17

zeigt eine schematische Rückansicht der Kontakteinrichtung gemäß Fig. 16;

Fig. 18

zeigt eine schematische Seitenansicht einer Ausführungsform eines Scharnierelements für das Haushaltsgargerät gemäß Fig. 1;

Fig. 19

zeigt eine schematische perspektivische Explosionsansicht einer weiteren Ausführungsform einer Kontakteinrichtung für das Haushaltsgargerät gemäß Fig. 1;

Fig. 20

zeigt eine weitere Explosionsansicht der Kontakteinrichtung gemäß Fig. 19;

Fig. 21

zeigt eine schematische Ansicht einer Ausführungsform eines Kontaktstifts für die Kontakteinrichtung gemäß Fig. 19;

Fig. 22

zeigt eine schematische perspektivische Ansicht einer Ausführungsform eines Gehäuses für die Kontakteinrichtung gemäß Fig. 19;

Fig. 23

zeigt eine schematische perspektivische Ansicht der Kontakteinrichtung gemäß Fig. 19;

Fig. 24

zeigt eine schematische Seitenansicht einer weiteren Ausführungsform eines Scharnierelements für das Haushaltsgargerät gemäß Fig. 1; und

Fig. 25

zeigt eine schematische perspektivische Ansicht einer Ausführungsform einer Beleuchtungseinrichtung für das Haushaltsgargerät gemäß Fig. 1.

Further advantageous configurations and aspects of the domestic cooking appliance are the subject of the subclaims and the exemplary embodiments of the domestic cooking appliance described below. In the following, the domestic cooking appliance is explained in more detail on the basis of preferred embodiments with reference to the attached figures.

Fig. 1

shows a schematic perspective view of an embodiment of a domestic cooking appliance;

Fig. 2

shows a further schematic perspective view of the domestic cooking appliance according to FIG Fig. 1 ;

Fig. 3

shows a schematic view of an embodiment of a door for the domestic cooking appliance according to FIG Fig. 1 ;

Fig. 4

shows a schematic view of a further embodiment of a door for the domestic cooking appliance according to FIG Fig. 1 ;

Fig. 5

shows a schematic exploded view of an embodiment of a contact device for the domestic cooking appliance according to FIG Fig. 1 ;

Fig. 6

shows a schematic perspective view of an embodiment of a stop for the contact device according to FIG Fig. 5 ;

Fig. 7

shows a schematic perspective view of an embodiment of a cap for the contact device according to FIG Fig. 5 ;

Fig. 8

shows a schematic side view of the household appliance according to FIG Fig. 1 ;

Fig. 9

shows a further schematic side view of the household appliance according to FIG Fig. 1 ;

Fig. 10

shows a further schematic side view of the household appliance according to FIG Fig. 1 ;

Fig. 11

shows a further schematic side view of the household appliance according to FIG Fig. 1 ;

Fig.

12 shows a schematic side view of a further embodiment of a contact device for the household appliance according to FIG Fig. 1 ;

Fig. 13

shows a schematic rear view of the contact device according to FIG Fig. 12 ;

Fig. 14

shows a schematic side view of the contact device according to Fig. 5 ;

Fig. 15

shows a schematic rear view of the contact device according to FIG Fig. 5 ;

Fig. 16

shows a schematic side view of a further embodiment of a contact device for the household appliance according to FIG Fig. 1 ;

Fig. 17

shows a schematic rear view of the contact device according to FIG Fig. 16 ;

Fig. 18

shows a schematic side view of an embodiment of a hinge element for the domestic cooking appliance according to FIG Fig. 1 ;

Fig. 19

shows a schematic perspective exploded view of a further embodiment of a contact device for the domestic cooking appliance according to FIG Fig. 1 ;

Fig. 20

shows a further exploded view of the contact device according to FIG Fig. 19 ;

Fig. 21

shows a schematic view of an embodiment of a contact pin for the contact device according to FIG Fig. 19 ;

Fig. 22

shows a schematic perspective view of an embodiment of a housing for the contact device according to FIG Fig. 19 ;

Fig. 23

shows a schematic perspective view of the contact device according to FIG Fig. 19 ;

Fig. 24

shows a schematic side view of a further embodiment of a hinge element for the domestic cooking appliance according to FIG Fig. 1 ; and

Fig. 25

shows a schematic perspective view of an embodiment of a lighting device for the domestic cooking appliance according to FIG Fig. 1 .

In the figures, elements that are the same or have the same function have been provided with the same reference symbols, unless otherwise stated.

The Fig. 1 shows a schematic perspective view of a domestic cooking appliance 1. The domestic cooking appliance 1 can for example be an oven, a microwave appliance or an oven with a microwave function. The household cooking appliance 1 also has a cooking space 2, which is enclosed by a receiving area 3 of the domestic cooking appliance 1. The receiving area 3 can also be referred to as the muffle or oven muffle of the domestic cooking appliance 1. The receiving area 3 can be closed with the aid of a door 4. The receiving area 3 has, in particular, a cuboid geometry. In the orientation of the Fig. 1 a flange 5 of the receiving area 3 is provided on the front side.

The door 4 is attached pivotably to the receiving area 3 and in particular pivotably to the flange 5. As the Fig. 1 shows, the door 4 can be hinged pivotably on the flange 5 at a lower end. Alternatively, the door 4 can also be hinged on the side. Furthermore, in the orientation of the Fig. 1 Viewed in the vertical direction and thus in the vertical direction of the household cooking appliance 1, a storage space can be provided under the receiving area 3, into which the door 4, which is then a retractable door 4, can be pushed in and stowed away when it is opened. In this case, the door 4 can be inserted into the storage space (not shown).

A handle 7 can be arranged on an upper section 6 of the door 4. In the Fig. 1 the door is shown in a half-open state. The handle 7 can extend over the entire width of the door 4. Alternatively, the handle 7, as in FIG Fig. 1 shown, extend only over part of the width of the door 4. The door 4 has a front or outside 8 and a rear or inside 9. The inside 9 faces the cooking space 2 when the door 4 is closed. Furthermore, the door 4 comprises a viewing window 10 through which the cooking space 2 can be viewed.

In order to illuminate the cooking space 2 when the household appliance 1 is in operation, the latter comprises a lighting device provided in or on the door 4. The lighting device is in the Fig. 1 not shown and will be explained below. The lighting device is set up to illuminate the receiving area 3 on the inside and thus the cooking space 2. In particular, the lighting device only illuminates the cooking space 2 when the door 4 is in a closed position. In an open position or when moving the door 4 from the closed position to the open position, the lighting device is automatically switched off in order to prevent a user from being dazzled by the lighting device when the door 4 is opened.

The receiving area 3 has an inner wall 11 with a base 12, a ceiling 13 arranged opposite the floor 12, a rear wall 14 arranged opposite the closed door 4 and two side walls 15, 16 arranged opposite one another. The inner wall 11 is preferably made from a steel sheet, in particular from a stainless steel sheet.

The Fig. 2 shows a further schematic perspective view of the domestic cooking appliance 1, the door 4 being shown in its open position. On the front of the cooking space 2 is a loading opening 17, which is in the Fig. 1 is only partially visible, shown. Food to be cooked can be introduced into the cooking space 2 through the loading opening 17. The loading opening 17 is delimited circumferentially by the flange 5. The door 4 is hinged on the receiving area 3 in a pivotable manner with the aid of a first hinge 18 and a second hinge 19. The door 4 can be separated from the receiving area 3 without tools. For this purpose, interfaces that can be separated without tools can be provided on the hinges 18, 19. A first contact device 20 is provided adjacent to the first hinge 18 and a second contact device 21 is provided adjacent to the second hinge 19. The contact devices 20, 21 can each be firmly connected to the hinges 18, 19 assigned to them.

As the Fig. 3 shows, a contact point carrier 22 is provided on the inside of the door 4. The contact point carrier 22 is preferably a plastic component. In particular, the contact point carrier 22 can be a plastic injection-molded component. The contact point carrier 22 has a first receiving section 23 and a second receiving section 24. A first electrical contact point 25 is received in the first receiving section 23. A second electrical contact point 26 is received in the second receiving section 24. The contact points 25, 26 are designed, for example, as metal plates. The contact points 25, 26 are part of a circuit (not shown) for supplying the lighting device with electrical current. In particular, the circuit comprising the lighting device is a direct current circuit. One of the contact points 25, 26 is designed as a positive pole and the other of the contact points 25, 26 as a negative pole.

The first contact device 20 is assigned to the first contact point 25 and the second contact device 21 is assigned to the second contact point 26. In the closed position of the Door 4, the contact devices 20, 21 contact the respective contact points 25, 26 assigned to them in order to close the circuit comprising the lighting device, so that the cooking space 2 is illuminated with the aid of the lighting device. In the in the Fig. 2 The open position shown of the door 4, the contact devices 20, 21 do not contact the respective contact points 25, 26, so that the circuit comprising the lighting device is open and the lighting device is switched off. This prevents the user from being dazzled when the door 4 is opened. As the Fig. 3 also shows, the receiving sections 23, 24 are each positioned on a first side edge 27, which is assigned to the first hinge 18, and a second side edge 28, which is assigned to the second hinge 19. The contact points 25, 26 can be clipped and / or glued into the receiving sections 23, 24.

At one in the Fig. 4 The alternative embodiment of the contact point carrier 22 shown, the receiving sections 23, 24 are arranged directly next to one another, so that the contact points 25, 26 are also arranged directly next to one another. Accordingly, in a household cooking appliance 1, which is in the Fig. 4 Has shown embodiment of the contact point carrier 22, the first contact device 20 and the second contact device 21 are arranged directly adjacent to each other. For example, the contact points 25, 26 and the contact devices 20, 21 are then assigned to the first side edge 27 and the first hinge 18, respectively. Because the contact points 25, 26 and the contact devices 20, 21 are positioned directly next to one another, cabling of the same can be carried out much more easily and with less material.

The Fig. 5 FIG. 11 shows a schematic exploded view of an embodiment of a first contact device 20. The second contact device 21 is preferably designed identically to the first contact device 20, which is why only the first contact device 20 is discussed below. The contact device 20 comprises an electrically conductive contact pin 29. The contact pin 29 comprises a cable receiving section 30 into which an electrical cable is soldered. Furthermore, the contact pin 29 comprises a contact section 31 facing away from the cable receiving section 30. The contact pin 29 is spring-loaded. In particular, a spring is provided for this purpose within a housing 32 of the contact pin 29 which separates the contact section 31 from the cable receiving section 30 way spring-loaded. By compressing the spring, the contact section 31 is displaced in the direction of the cable receiving section 30.

The contact device 20 furthermore comprises a housing 33. The housing 33 is preferably a plastic injection-molded component. The housing 33 comprises a base plate 34 and a cylindrical receiving section 35 extending out of the base plate 34 on the upper side. The receiving section 35 is preferably designed to be rotationally symmetrical to a central axis M ₃₅ . A longitudinal direction L _{33 of} the housing 33 is arranged parallel to the central axis M ₃₅ . The contact pin 29 is received in the receiving section 35. The contact section 31 of the contact pin 29 can be linearly displaced along the longitudinal direction L ₃₃ for contacting the contact point 25, 26 assigned to it, the spring being compressed.

In particular, with the help of the spring-loaded contact pin 29 when moving the door 4 from the closed position to the open position, the lighting device is still supplied with power up to a predetermined opening angle of the door 4, since the spring-loaded contact pin 29 against the contact point 25 assigned to it , 26 presses. Furthermore, when the door 4 is moved from the open position to the closed position, the contact pin 29 already contacts the contact point 25, 26 assigned to it before the door 4 is completely closed. A bore or an opening 36 for fastening the housing 33 to the hinge 18, 19 assigned to it is also provided on the base plate 34.

The contact device 20 further comprises a stop 37 for the contact pin 29. The stop 37 comprises, as in FIG Fig. 6 shown, a disk-shaped base plate 38, from which three arm sections 39 to 41 extend at the front. A recess 42, 43 for cable routing can be provided on each of the arm sections 39 and 41. The stop 37 is preferably a plastic injection molded component. The contact pin 29 can be accommodated between the arm sections 39, 41. In this case, a circumferential shoulder or collar can be provided on the housing 32 of the contact pin 29, which is in contact with the arm sections 39 to 41 at the front.

The contact device 20 also comprises a cap 44 that can be snapped into the housing 33 Fig. 5 and 7th snap hooks 45, 46 are provided. The number of snap hooks 45, 46 is arbitrary. The receiving section 35 of the housing 33 has recesses 47, 48 corresponding to the snap hooks 45, 46, into which the snap hooks 45, 46 engage in a form-fitting manner. In order to facilitate the assembly of the cap 44 on the receiving section 35, there is at least one positioning web 49 on the outside of the cap 44 for the correct positioning of the cap 44 relative to the receiving section 35 of the housing 33. For this purpose, the receiving section 35 can have a corresponding groove. In the center of the cap 44 there is provided a guide 50, which breaks through it, for guiding the contact pin 29. As explained above, the cap 44 is snapped or clipped into the housing 33. With the aid of the guide 50, a precise, secure fit of the contact pin 29 in the housing 33 is ensured. In order to facilitate assembly, the at least one positioning web 49 for correctly positioning the cap 44 relative to the receiving section 35 of the housing 33 is located on the outside of the cap 44.

When the door 4 is opened and closed, the contact pin 29 must be prevented from colliding with the door 4. The Fig. 8 shows the door 4 in its closed position and the Fig. 10 shows the door 4 in its open position. The Fig. 9 shows the door 4 in an intermediate position between the open position and the closed position. The Fig. 11 shows the door 4 in several intermediate positions, which are denoted by the reference numerals 4 'and 4 ". In the following, reference is made to FIG Figs. 8-11 simultaneously referred to.

An opening angle α in the intermediate position is, for example, 30 °. The household cooking appliance 1 furthermore comprises a door contact switch 80, which can be activated at a first opening angle α _{1 of} the door 4 ′ in order to apply an electrical voltage to the contact devices 20, 21. The contact devices 20, 21 contact the contact points 25, 26 at a second opening angle α _{2 of} the door 4 ″ that differs from the first opening angle α _1. The first opening angle α _{1 is} smaller than the second opening angle α ₂ Arc between the respective contact device 20, 21 and the contact point 25, 26 associated therewith can be prevented, since the contact devices 20, 21 are only subjected to a voltage when the contact pins 29 are already making contact with the contact points 25, 26. For example, the first opening angle can α _{1 have} a value of 5 ° and the second opening angle α ₂ can be 8 °.

When the door 4 is closed, the circuit for the contact devices 20, 21 is closed by the door contact switch 80. It must be ensured that the contact pins 29 and the contact points 25, 26 are already in contact in order to avoid an arc. If there were an air gap between the contact points 25, 26 and the respective contact pins 29, an arc would form when the circuit was closed, as a result of which the contact points 25, 26 could wear out excessively quickly. Since the door contact switch 80 responds at a first opening angle α ₁ of, for example, 5 °, contact between the contact devices 20, 21 and the contact points 25, 26 should already be established at a second opening angle α ₂ of 8 ° in order to have a sufficient safety factor. The same of course applies equivalently when moving the door 4 from the closed position into the open position.

The spring of the contact pin 29 can, for example, allow a maximum spring travel of approximately 4 mm. The housing 32 of the contact pin 29 can, for example, have an outer diameter of 2.1 mm. For example, when the spring travel is full, the spring has a maximum force of, for example, 1.7 N, with which the contact section 31 is pressed against the contact point 25, 26 assigned to it. In this way, sufficient contact between the contact devices 20, 21 and the contact points 25, 26 is always ensured. A cable can either be soldered to the contact points 25, 26 or connected with a plug. This depends on how the lighting device is later integrated into the door 4 and whether it is necessary to detach the cables again or not.

The Figures 12 and 13 show a development of the contact device 20. A cable 51, which is assigned to the circuit, is fed to the contact pin 29. This variant of the contact device 20 according to FIG Figures 12 and 13 is preferably suitable for household appliances 1 without a door 4 that can be pivoted under the cooking space 2. The contact device 20 is characterized by compact dimensions and low material consumption. In this way, the contact device 20 can be produced particularly inexpensively. The housing 33 has a lateral support surface 54 for guiding the housing 33 on the hinge 18, 19 assigned to it.

During the pre-assembly of the contact device 20, the cable 51 is first soldered to the contact section 31 of the contact pin 29. The contact pin soldered to the cable 51 29 is inserted into the guide 50 of the cap 44. The contact pin 29 is inserted from the front up to a stop provided in the cap 44 into the latter. The stop 37 for the contact pin 29 is pushed onto the cap 44 from behind, the arm sections 39 to 41 engaging the cap 44 and the cable 51 is threaded through the recesses 42, 43 provided in the stop 37. The cable 51 is guided into a cable guide 52 of the housing 33 provided on the base plate 34. However, the cap 44 is not yet clipped to the housing 33. The cable 51 is, as in the Figures 12 and 13 can be seen, led straight out of the housing 33 at the rear.

The Figures 14 and 15 show again the embodiment of the contact device 20 according to Fig. 5 . The contact device 20 according to FIG Figures 14 and 15 differs from the contact device 20 according to FIG Figures 12 and 13 essentially by an alternative embodiment of the housing 33. In particular, the base plate 34 of the housing 33 is equipped with an arcuate cable guide 52 for the cable 51 provided on the underside of the base plate 34. The cable guide 52 is set up to deflect the cable 51 by an angle of 90 °. The base plate 34 conceals the cable 51. Due to the concealed cable guide 52, the cable 51 is not visible even when the door 4 is open, but only emerges from the housing 33 after the flange 5. This results in a particularly high-quality solution visually.

Furthermore, through the concealed routing of the cable 51, an opening in the housing 33 in the vicinity of the drainage channel of the household cooking appliance 1 can be avoided, whereby, for example, the penetration of fat from the drainage channel into the housing 33 is prevented. The pre-assembly of the contact device 20 corresponds to the pre-assembly of the embodiment of the contact device 20 according to FIG Figures 12 and 13 . The cable 51 can furthermore be clamped when exiting the housing 33 in order to better fix the cable 51 in the cable guide 52.

The Figures 16 and 17 show a further embodiment of a contact device 20. In this embodiment of the contact device 20, the housing 33 is widened to the rear in order to enable a screw connection there. For this purpose, an opening 53 is provided in the base plate 34. Furthermore, the housing 33 comprises not only a support surface 54 but a first support surface 54 and a second support surface 55, around a to prevent lateral movement of the housing 33 relative to the respective hinge 18.

The Fig. 18 shows an embodiment of a hinge element 56 of the hinge 18. The hinge element 56 comprises a first fastening point 57 for fastening the contact device 20 according to the two variants of FIG Figs. 12-15 and a second fastening point 58 for fastening the variant of the contact device 20 according to FIGS Figures 16 and 17 . Here, a screw is passed through the respective openings 36, 53 of the base plate 34 of the housing 33 and screwed into the respective fastening point 57, 58.

The Fig. 19 and 20th each show a schematic exploded view of a further embodiment of a contact device 20. In addition to the housing 33, the contact device 20 only comprises the contact pin 29 and a rear cap 59. This allows components to be saved. The previously explained cap 44 as a separate component can be dispensed with and is formed in one piece with the cylindrical receiving section 35 of the housing 33. Support surfaces 54, 55 for positioning the housing 33 on the hinge element 56 are provided on both sides of the housing 33. Furthermore, an opening 60 is provided on the rear of the receiving section 35, into which the cap 59 can be clipped or screwed.

Because the cap 44 is formed in one piece with the receiving section 35, openings in the receiving section 35 for snapping the cap 44 into the receiving section 35 can be dispensed with. This prevents fat or moisture from penetrating into the receiving section 35. The contact pin 29 is pressed into the receiving section 35 from the front.

The Fig. 21 shows an embodiment of a contact pin 29. The contact pin 29 comprises the contact section 31 and the cable receiving section 30. A circumferential shoulder or collar 61 is provided on the housing 32 which, when the contact pin 29 is pushed into the receiving section 35, rests on the front of the latter. Furthermore, the housing 32 comprises a plurality of ribs 62 evenly distributed over a circumference thereof, which when the contact pin 29 is pressed into the receiving section 35 resiliently or plastically deform. As a result, the contact pin 29 is held captive in the receiving section 35.

As the Fig. 22 shows, a support surface 63 is provided on the front side on the receiving section 35 or on the cap 44, on which the collar 61 of the contact pin 29 rests. An engagement section 64 is provided on the underside of the base plate 34, which is designed to fasten the contact device 20 to the respective hinge 18, 19 to engage positively in the respective hinge 18, 19 or the respective hinge element 56 or to grip around it. The engagement section 64 has two resiliently deformable gripping arms 65, 66.

As the Fig. 23 and 24 show, an opening 67 is provided on the hinge element 56 of each hinge 18, 19, into which the engagement section 64 of the housing 33 engages in a form-fitting manner. The contact device 20 is fixed to the hinge 18 with the aid of a screw 68 which engages in a fastening point 69 provided on the hinge element 56, in particular a threaded hole. Preferably on the housing 33, and in particular on the base plate 34, there is an elongated hole 70 ( Fig. 19 , 20th , 22nd ) is provided through which the screw 68 is guided. To adjust the contact device 20, it can be positioned along the hinge element 56 in a longitudinal direction L _{56 of the} same in order to position the contact device 20 relative to the contact point 25, 26 assigned to it and then screw it in the desired position. In this way, the opening angle α _{1 can be} set at which the contact pins 29 contact the respective contact points 25, 26.

The Fig. 25 shows a schematic perspective view of an embodiment of the aforementioned lighting device 71 for the domestic cooking appliance 1. The lighting device 71 comprises a circuit board 72 on which an LED 73 is arranged. Furthermore, the printed circuit board 72 comprises contact elements 74, 75, which are electrically conductively connected to the LED 73 via conductor tracks 76, 77. The contact elements 74, 75 are electrically conductively connected to the contact points 25, 26 via cables 51, 78.

The LED 73 is not seated in the center of the circuit board 72, but on the edge of the latter. The conductor tracks 76, 77 run next to one another on the circuit board 72, and not separately from one another on each side of the LED 73. To the distance of the LED 73 to a light-conducting To define the glass rod, a spacer 79 is provided on the LED 73. The spacer 79 serves, on the one hand, to keep the LED 73 apart from the light-conducting glass rod and, on the other hand, to reduce losses in the light output by preventing light from escaping laterally. With the aid of the spacer 79 it can be achieved that the light is irradiated centrally into the light-guiding glass rod. One of the cables 51, 78 can have the door contact switch 80. The cables 51, 78, the lighting device 71, the door contact switch 80, the contact devices 20, 21 and the contact points 25, 26 form a previously mentioned circuit 81. The circuit board 72 can be screwed to a heat sink with the aid of screws 82, 83.

Reference symbols used:

1

Domestic cooking appliance

2

Cooking space

3

Recording area

4th

door

4 '

door

4 "

door

5

flange

6th

section

7th

Handle

8th

Outside

9

inside

10

Viewing window

11

Inner wall

12

ground

13

ceiling

14th

Back wall

15th

Side wall

16

Side wall

17th

Loading opening

18th

hinge

19th

hinge

20th

Contact facility

21st

Contact facility

22nd

Contact point carrier

23

Receiving section

24

Receiving section

25th

Contact point

26th

Contact point

27

Side edge

28

Side edge

29

Contact pin

30th

Cable receiving section

31

Contact section

32

casing

33

casing

34

Base plate

35

Receiving section

36

breakthrough

37

attack

38

Base plate

39

Arm section

40

Arm section

41

Arm section

42

Recess

43

Recess

44

cap

45

Snap hook

46

Snap hook

47

Recess

48

Recess

49

Positioning web

50

guide

51

electric wire

52

Cable routing

53

breakthrough

54

Support surface

55

Support surface

56

Hinge element

57

Attachment point

58

Attachment point

59

cap

60

opening

61

Federation

62

rib

63

Support surface

64

Engaging portion

65

Gripper arm

66

Gripper arm

67

breakthrough

68

screw

69

Attachment point

70

Long hole

71

Lighting device

72

Circuit board

73

LED

74

Contact element

75

Contact element

76

Track

77

Track

78

electric wire

79

Spacers

80

Door contact switch

81

Circuit

82

screw

83

screw

L ₃₃

Longitudinal direction

L ₅₆

Longitudinal direction

M ₃₅

Central axis

α

Opening angle

α ₁

Opening angle

α ₂

Opening angle

Claims (14)

1. Household cooking appliance (1), in particular baking oven, with a receiving region (3) which has a loading opening (17), a door (4) hinged on the receiving region (3) in a pivotable manner for closing off the loading opening (17), an illumination facility (71) provided in or on the door (4) for illuminating the interior of the receiving region (3), a first electrical contact point (25) provided on the door (4), a second electrical contact point (26) provided on the door (4), a first contact facility (20) for electrically contacting the first contact point (25) and a second contact facility (21) for electrically contacting the second contact point (26), wherein in a closed position of the door (4), in which the contact facilities (20,21) contact the respective contact points (25, 26), a current circuit (81) comprising the illumination facility (71) is closed, wherein in an open position of the door (4), in which the contact facilities (20, 21) do not contact the respective contact points (25, 26), the current circuit (81) comprising the illumination facility (71) is opened, characterised in that
   each contact facility (20, 21) has a housing (33) connected to the receiving region (3) and a contact pin (29) received in the housing (33) with a contact section (31) which can be linearly displaced along a longitudinal direction (L₃₃) of the housing (33) for contacting the respective contact point (25, 26), and
   each contact facility (20, 21) is fastened to a hinge (18, 19) provided on the side of the receiving region (3) in each case.
2. Household cooking appliance according to claim 1, characterised in that the first contact point (25) and the second contact point (26) are arranged immediately adjacent to one another.
3. Household cooking appliance according to claim 2, characterised in that the first contact facility (20) and the second contact facility (21) are arranged immediately adjacent to one another.
4. Household cooking appliance according to one of claims 1 - 3, further comprising at least one door contact switch (80), which can be activated at a first opening angle (α₁) of the door (4), in order to apply an electrical voltage to the contact facilities (20, 21), wherein the contact facilities (20, 21) contact the contact points (25, 26) at a second opening angle (α₂) of the door (4) which is different from the first opening angle (α₁) and wherein the first opening angle (α₁) is less than the second opening angle (α₂).
5. Household cooking appliance according to one of claims 1 - 4, characterised in that the contact points (25, 26) are received in receiving sections (23, 24) provided on the interior of the door (4).
6. Household cooking appliance according to claim 5, further comprising a contact point carrier (22) fastened to the interior of the door (4), which has the receiving sections (23, 24) and is manufactured from a plastic material.
7. Household cooking appliance according to one of claims 1 - 6, characterised in that the contact pin (29) is spring-loaded.
8. Household cooking appliance according to one of claims 1 - 7, characterised in that the housing (33) has an engagement section (64) which, in order to fasten the contact facilities (20, 21) to the hinges (18, 19), is configured to engage into the respective hinge (18, 19) with a positive fit or to encompass said hinge (18, 19).
9. Household cooking appliance according to claim 8, characterised in that the housing (33) can be linearly displaced along the respective hinge (18, 19) in order to adjust a position of said housing (33) on the respective hinge (18, 19).
10. Household appliance according to claim 8 or 9, characterised in that the engagement section (64) has two gripping arms (65, 66), which are configured to engage into a perforation (67) provided on the respective hinge (18, 19).
11. Household cooking appliance according to one of claims 1 - 10, characterised in that the contact pin (29) and an end stop (37) for the contact pin (29) are received in the housing (33), wherein the housing (33) is closed off with the aid of a cap (44) snapped into said housing (33).
12. Household cooking appliance according to one of claims 1 - 11, characterised in that the housing (33) has a base plate (34) with a cable guide (52).
13. Household cooking appliance according to one of claims 1 - 12, characterised in that the housing (33) is manufactured from a plastic material.
14. Household cooking appliance according to one of claims 1 - 13, characterised in that the contact pins (29), in the closed position of the door (4), are arranged perpendicularly to an interior (9) of the same.

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