EP2581666B1 - Door for a domestic appliance, domestic appliance with a door and method for moving a handle of a door of a domestic appliance - Google Patents

Description

The invention relates to a door for a household appliance, with a plate-like base, on which a movable handle is arranged. The door further includes a coupling device which is connected to the handle and through which the handle is pivotable relative to the base depending on the movement of the door. Furthermore, the invention also relates to a household appliance with such a door and a method for moving a handle of a door.

Baking ovens are known from the prior art, which have a door for closing a cooking chamber. Such doors usually have a handle on the front side, which can be gripped by a user in order to pivot the door can. In order to make the accessibility of the door when fully open user-friendly, such handles can be pivoted relative to the plate-like base so that they can be easily grasped even in this open position of the door.

In conventional embodiments, there is a device for this purpose which comprises two tensioning wires. The swivel mechanism of the handle is formed with a double tension wire guide, wherein in the housing of the household appliance retractable folding doors, the connection of this tension wire guide to the door hinge and its translation is realized. In versions in which such a door in the fully open state is also sunk into the housing of the household appliance, the connection of the two tension wires with double tension wire guide also takes place in the bearing shell and a rotatably mounted axle in the lower door area. When opening the door, the pivoting movement of the handle is transmitted to the lower door axis.

The conventional embodiments are relatively complex and designed component intensive. As a result, the assembly and the movement principle to Power transmission relatively complex. This may also make it more prone to malfunction.

The WO 03/072897 A1 discloses a home appliance door and a household appliance.

The GB 2 183 152 A discloses a door handle.

It is an object of the present invention to provide a door for a household appliance, such a household appliance as well as a method for moving a handle of a door of a household appliance, in which or in which ensures a compact yet simple design and functionally reliable movement of the handle is.

This object is achieved by a door, a household appliance and a method according to the independent claims.

A door according to the invention for a household appliance comprises a plate-like base part, on which a handle with a movable handle part is arranged. The door further comprises a coupling device, which is connected to the handle part and by which the handle part is pivotable relative to the base part depending on the movement of the door. The coupling device comprises a purely single-acting cable, the handle part side is coupled to a first end of a return spring, wherein the return spring handle parts is arranged externally with a second end. The second end of the return spring is thus fixedly connected, in particular fixed to the base connected to this, and does not move with the handle part. By such a configuration, a very simple concept for moving the handle relative to the base can be realized. A comprehensive and complex design of a double tension wire guide is no longer required. By the return spring and its specific connection to the two ends, it is also ensured in such a simple design Einläufigen cable that the handle automatically returns to its original position when the door is closed again. The coupling device comprises a single-speed cable, which is firmly connected with a first end to the handle part.

It is envisaged that the cable is connected with its handle remote end with a pivot axis of the door. This is particularly advantageous for doors that are recessed in the open end position in the housing of the household appliance.

It is provided that the return spring is biased at least in an open end position of the door and an associated pivoting position of the handle part. As a result of this configuration, the handle part can then be automatically transferred again from the pivoting position into an undeflected basic position when the door is closed by the return spring.

With regard to the terminology of the single-wire pull cable, this means that only one cable is present, which is not arranged double-barreled or multi-parallel running, but only extends with its ends between the handle and the door axis or the door hinge and thus formed only a tension wire is.

On the handle part is the handle bar and handle bars are arranged.

It is preferably provided that the first end of the return spring with a holding element, which is connected to the cable, also firmly connected. This allows a mechanically stable connection and a very accurate and directly transmitted motion control done without play.

But it can also be provided that the end of the return spring is connected at a location other than the handle part side end of the cable with the handle part.

It is preferably provided that the return spring is biased at least in a closed end position of the door and an associated unverschwenkten basic position of the handle part. This also has the advantage that then this basic position is held virtually fixed and no unwanted wobbling of the grip occurs.

It is preferably provided that the second end of the return spring is connected to a stationary grip element. This allows on the one hand a mechanically stable attachment and beyond a very local attachment of the return spring close to the handle part. As a result, the return spring can also be arranged very compact and compact and space-saving.

The handle is constructed in particular by the grip part and the grip element.

It can alternatively also be provided that the cable is connected with its end facing away from the handle with a coupling element which is contactable with a hinge pin of a hinge part of a door hinge, and thus no permanently fixed connection between the coupling element and the hinge pin is formed. This is advantageous in the household appliance retractable door. It can also be provided that a firm connection between the coupling element and the hinge tappet is formed. This is advantageous in that the door is not retractable into the housing of the household appliance door, but is a hinged door.

Preferably, then, the coupling element may be a tension spring, which is variable depending on the door movement and the associated movement of the hinge plunger in length. It can also be provided that the coupling element is a length-stable slide, which is variable depending on the door movement and the associated movement of the hinge plunger in position. In particular, the handle part of the door is brought into one of the end positions or end positions by a return spring engaging in or directly on the grip part. With the einläufigen cable the door movement is transmitted from a door hinge or a door pivot axis on the handle and in particular the handle part. The einläufige cable is in the upper bearing part of the handle part by a permanently connected to the rope bush, which may be pressed or molded, or a similar connection, plugged or clipped.

In an advantageous embodiment of the household appliance, which may be in particular a cooking appliance, such as an oven, the door is provided for closing a cooking chamber.

It can be provided here that the door is sunk in the open end position in the household appliance. In such embodiments, it is advantageous that the einläufige cable is always tied to the door axis.

In embodiments in which the household appliance has a hinged door and thus a door which can not be lowered into the housing of the domestic appliance, the mechanism for transmitting the hinge position by the hinge plunger can be configured differently, this being dependent on the cable guide.

Thus, it can be provided here that the cable is coupled to a tension spring, which is tensioned by the hinge plunger or on the other hand is connected to a carriage which is moved by the hinge plunger, wherein in the second-mentioned solution then only the return spring as a single spring under control located. Another spring does not include the mechanism for pivoting the handle.

It is preferably provided that a door hinge has a hinge housing and a hinged swivel connected thereto, and the hinge blade can be contacted with the door and the hinge housing is arranged in a household appliance housing. This is advantageous with retractable door. This is also advantageous in that the larger and space-intensive hinge housing is thus not arranged in the door and there wastes no unnecessary space. In addition, other components can be accommodated in the hinge housing. The hinge movement is then preferably transmitted via a hinge ram in the door. This can be the hinge sword or coupled with the hinge sword. The linear movement of the hinge plunger actuates the single-action cable and transmits the movement accordingly to the handle part.

If the door is a hinged door and thus can not be lowered into the domestic appliance, a firm connection between the hinge bar and the door is advantageous.

There may be alternatives with regard to the cable guide. On the one hand, this can be done directly behind a door inner pane of the door. Since a door usually has at least one door inner pane and an outer door pane which are arranged at a distance from one another and parallel to one another, this results in an alternative with regard to the arrangement. Usually then at least one further door intermediate pane is formed, so that the previously mentioned cable guide is arranged at a distance from the door outer pane.

In contrast, however, can be provided in an alternative embodiment that the cable guide runs directly behind the front glass pane and thus the door outer pane and is arranged.

Furthermore, the invention relates to a method for moving a handle part of a handle of a door of a household appliance, wherein depending on the pivoting movement of the door, the handle part is pivoted via a coupling device relative to a base part of the door. The coupling device is formed with a single-speed cable, the handle part side is coupled to a first end of a return spring, wherein the return spring is disposed with a second end handle parts external.

Preferably, the return spring is tensioned during the pivoting of the handle part and in the counter-movement, the handle part is automatically brought by the return spring in the starting position.

By the invention, a very component-reduced, compact design and yet highly functional coupling mechanism can be created.

Further features of the invention will become apparent from the claims, the figures and the description of the figures.

Fig. 1

eine perspektivische Darstellung eines ersten Ausführungsbeispiels eines erfindungsgemäßen Haushaltsgeräts;

Fig. 2

eine perspektivische Darstellung eines zweiten Ausführungsbeispiels eines erfindungsgemäßen Haushaltsgeräts;

Fig. 3

eine schematische Seitenansicht des Griffs mit einem Betätigungsmechanismus in einer geschlossenen Endstellung der Tür des Haushaltsgeräts gemäß Fig. 1;

Fig. 4

eine schematische Seitenansicht der Komponenten gemäß Fig. 3 bei offener Endstellung der Tür des Haushaltsgeräts gemäß Fig. 1;

Fig. 5

eine Seitenansicht des Türgriffs und des Betätigungsmechanismus im geschlossenen Zustand einer Tür des Haushaltsgeräts gemäß Fig. 2;

Fig. 6

eine Seitenansicht der Komponenten gemäß Fig. 5 in der offenen Endstellung der Tür des Haushaltsgeräts gemäß Fig. 2;

Fig. 7

eine Seitenansicht der Komponenten gemäß Fig. 3 in einem zu Fig. 3 unterschiedlichen Montageszenario;

Fig. 8

eine Ansicht der Komponenten in Fig. 4 bei einem im Vergleich zu Fig. 4 unterschiedlichen Montageszenario;

Fig. 9

eine Seitenansicht des Türgriffs mit einer Betätigungsmechanik einer Tür eines Haushaltsgeräts gemäß Fig. 2 in einem zu Fig. 5 unterschiedlichen Montageszenario; und

Fig. 10

eine Darstellung der Komponenten gemäß Fig. 9 in einer offenen Endstellung der Tür des Haushaltsgeräts gemäß Fig. 2 mit einem zu Fig. 6 unterschiedlichen Montageszenario der Komponenten.

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

Fig. 1

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

Fig. 2

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

Fig. 3

a schematic side view of the handle with an actuating mechanism in a closed end position of the door of the household appliance according to Fig. 1 ;

Fig. 4

a schematic side view of the components according to Fig. 3 in the open end position of the door of the household appliance according to Fig. 1 ;

Fig. 5

a side view of the door handle and the actuating mechanism in the closed state of a door of the household appliance according to Fig. 2 ;

Fig. 6

a side view of the components according to Fig. 5 in the open end position of the door of the household appliance according to Fig. 2 ;

Fig. 7

a side view of the components according to Fig. 3 in one too Fig. 3 different mounting scenario;

Fig. 8

a view of the components in Fig. 4 at one compared to Fig. 4 different mounting scenario;

Fig. 9

a side view of the door handle with an actuating mechanism of a door of a household appliance according to Fig. 2 in one too Fig. 5 different mounting scenario; and

Fig. 10

a representation of the components according to Fig. 9 in an open end position of the door of the household appliance according to Fig. 2 with one too Fig. 6 different assembly scenario of the components.

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

In Fig. 1 is shown in a perspective view of a trained as a baking oven 1 home appliance. The oven 1 comprises a cooking chamber 2 which is delimited by a muffle 3. On the front side, a feed opening of the muffle 3 can be closed by a door 4. The door 4 is constructed in the embodiment of a plurality of door panels, for this purpose, an outer door panel and spaced therefrom at least one door intermediate disc, and in turn spaced therefrom, a door inner pane which is closest to the cooking chamber 2 are formed. On an outer side 5 of the door 4, a handle 6 is also arranged, which is movable relative to a plate-like base part 7, which comprises said disks, in particular pivotable. For this purpose, the handle 6 comprises a handle part 6a (FIG. 3a), which has a handle bar 6c and Handle 6b has, and a handle member 6b. The grip part 6a is pivotable relative to the grip element 6b and relative to the base part 7. The grip element 6b is fixedly arranged on the base part 7 and thus can not be pivoted.

The door 4 is hinged by hinges 8 and 9 to a housing 10 of the oven 1 and pivotable about a horizontal axis 11 lying down.

Moreover, cooking zones 12, 13, 14 and 15 as well as an operating device 16 with a display unit 17 and operating elements 18 and 19 are furthermore provided by way of example only and not by way of limitation both in position and in number.

In the embodiment according to Fig. 1 the door 4 is designed as a hinged door, which in the in Fig. 1 shown, fully open state or the open end position is not sunk into the housing 10.

In Fig. 2 a further embodiment of a baking oven 1 is shown in which, in contrast to the representation in Fig. 1 a door 4 shown in the open end position is positioned in the housing 10 in a space 20 recessed.

In the in Fig. 1 and Fig. 2 In each case, the handle 6 or the grip part 6a is in a pivoting position, which means that grip areas, such as a handle bar, are arranged at the front and can be easily gripped by a user.

If a door 4 is transferred from its open end position shown into a closed end position, then the handle part 6a is then automatically returned from its pivoting position into the non-pivoted basic position.

For this purpose, according to a first embodiment in Fig. 3 provided that the grip part 6a is mechanically coupled to a coupling device 21. The coupling device 21 comprises a single-speed cable 22, which is firmly connected to a first end 23 with the handle portion 6a. For this purpose, it is provided that a coupling element 24, such as a bolt or a bush, is fixedly arranged on the handle part 6a. Furthermore a return spring 25 is provided which is fixedly connected to a first end 26 on the handle side, in particular likewise with the coupling element 24. With a second end 27, the return spring 25 is connected outside the handle, in particular connected to the base 7 of the door 4.

In Fig. 3 an embodiment is shown in which the oven 1 in Fig. 2 is realized and the door 4 is shown in the closed end position. A lower end 28 of the cable 22 is connected to the door axis 11. Now, the door 4, starting from the closed end position in the in Fig. 2 transferred shown open end position, the cable 22 is about the door axis 11 according to the arrow in the Fig. 3 moves and then takes the position in Fig. 4 one. Again, the handle remote end 28 of the cable 22 is connected to a fixedly connected to the door axis 11 bush 29.

By the rotational movement of the door axis 11, the handle 6 is pivoted into its pivoting position via the coupling device 21 and in particular the single-wire cable 22, whereby the return spring 25 is stretched and merges into a larger prestressed state.

Is then based on the design and presentation in Fig. 4 the door 4 again transferred to the closed end state or the end position, the handle part 6a is automatically due to the prestressed spring force of the return spring 25 from the in Fig. 4 shown pivoting position in the basic position according to Fig. 3 converted. In the embodiment in FIG. 3 and FIG. 4 It is envisaged that the cable guide of the cable 22 takes place directly behind the door inner pane.

In Fig. 5 an embodiment of the coupling device 21 is shown, as in a hinged door as shown in FIG Fig. 1 of the oven 1 is realized. Here, it is provided that the handle remote end 28 of the cable 22 with a tension spring 30 is coupled depending on movement but has no fixed permanent connection, wherein the tension spring 30 in turn is coupled to a hinge ram 31 of a door hinge 32. The door plunger 31 moves along the arrow P1 linearly depending on the respective direction of movement of the door 4th

Now, starting from the in Fig. 5 shown closed end position of the door 4, this open, so the tension spring 30 is compressed via the hinge ram 31, as then in Fig. 6 is shown. Fig. 6 then in turn, starting from the open end position, the door 4 is closed, so also the handle part 6a is converted back into its unverschwenkte basic position. In this case, the automatic return movement is initiated by the tension spring 30, which is guided and supported by the hinge plunger 31.

With regard to the structure and the design of the coupling device 21 handle side is to the comments too FIG. 3 and FIG. 4 directed. In this regard, there is analogy.

The illustrations in Fig. 5 and Fig. 6 also show versions in which the cable guide takes place directly behind the inner door panel.

In contrast, in the embodiments according to FIGS. 7 to 10 Rope guides shown behind the door outer pane.

It can be seen that with regard to the representations in FIGS. 7 and 8 , the state of the closed end position and the open end position of the door 4 according to the oven 1 in Fig. 2 show only different positions of the coupling elements 24 and the sleeve 29 in contrast to FIG. 3 and FIG. 4 are formed.

In Fig. 9 is another alternative for a coupling device 21 for an oven according to the embodiment in Fig. 1 shown. Here is in contrast to the embodiment in Fig. 5 , in which also the closed end position of the door 4 is shown, no further tension spring 30 is present, but a linearly movable and length-stable carriage 33 via the hinge plunger 31.

In this case, the single-action cable 22 is connected to the carriage 33 via a deflecting element 34 remote from the handle and remote from the handle. This is moved depending on the movement of the hinge plunger 31 upwards or downwards, so that then depending on the movement of the grip part 6a is affected.

Starting from the illustration in Fig. 9 Then, when opening the door 4, the carriage 33 is pulled down by the hinge plunger 31, whereby the grip part 6a is brought from its non-pivoted basic position into the pivoting position.

LIST OF REFERENCE NUMBERS

1

oven

2

oven

3

muffle

4

door

5

outside

6

Handle

6a

handle part

6b

handle element

6c

Grab bars

6d

handle brackets

7

plate-like base

8, 9

hinges

10

casing

11

door axis

12, 13, 14, 15

cooking zones

16

operating device

17

display unit

18, 19

controls

20

room

21

coupling device

22

single-speed cable

23

The End

24

coupling element

25

return spring

26, 27

end up

28

The End

29

Rifle

30

mainspring

31

hinge tappets

32

door hinge

33

carriage

34

deflecting

P1

arrow

Claims (14)

1. Door (4) for a domestic appliance (1) having a plate-like base part (7), on which a handle (6) with a moveable handle part (6a) is arranged, and a coupling device (21), which is connected to the handle part (6a) and by means of which the handle part (6a) can be pivoted relative to the base part (7) as a function of the movement of the door (4), characterised in that the coupling device (21) comprises a single-track cable pull (22) so that only one cable is present, which is not arranged so as to run in parallel in a double- or multiple-track manner, but instead extends with its ends only between the handle (6) and a door axis (11) or a door hinge (8, 9) and thus only one tension wire is embodied, and which cable pull (22) is fixedly connected to the handle part (6a) with a first end (23) and on the handle-part side is coupled to a first end (26) of a retaining spring (25), and is connected to a swivel axis (11) of the door with its end (28) facing away from the handle, wherein the retaining spring (25) is arranged with a second end (27) externally to the handle part, for the purpose of which a coupling element (24) is arranged at a fixed position on the handle part (6a).
2. Door (4) according to claim 1, characterised in that the first end (26) of the retaining spring is fixedly connected to a retaining element (24) which is fixedly connected to the cable pull (22).
3. Door (4) according to claim 1 or 2, characterised in that the retaining spring (25) is pretensioned at least in an open end position of the door (4) and in an associated pivoted position of the moveable handle part (6a).
4. Door (4) according to one of the preceding claims, characterised in that the retaining spring (25) is pretensioned at least in a closed end position of the door (4) and in an associated unpivoted base position of the handle part (6a).
5. Door (4) according to one of the preceding claims, characterised in that the second end (27) of the retaining spring (25) is connected to a stationary handle element (6b).
6. Door (4) according to one of claims 1 to 5, characterised in that the cable pull (22) is connected to a coupling element (30, 33) with its end (28) facing away from the handle, said coupling element (30, 33) being contactable with a hinge tappet (31) of a hinge part of a door hinge (32).
7. Door (4) according to claim 6, characterised in that the coupling element is a tension spring (30), the length of which can be changed as a function of the door movement and the associated movement of the hinge tappet (31).
8. Door (4) according to claim 6, characterised in that the coupling element is a slide (33) with length stability, the position of which can be changed as a function of the door movement and the associated movement of the hinge tappet (31).
9. Domestic appliance (1), in particular cooking appliance, having a door (4) according to one of the preceding claims.
10. Domestic appliance (1) according to claim 9, characterised in that in the opened end position the door (4) is arranged in the domestic appliance (1) countersunk.
11. Domestic appliance (1) according to claim 9, characterised in that in the opened end position the door (4) is arranged in the domestic appliance (1) not countersunk.
12. Domestic appliance (1) according to one of claims 9 to 11, characterised in that a door hinge has a hinge housing and a hinge strut rotatably connected thereto, and the hinge strut can make contact with the door (4) and the hinge housing is arranged in a domestic appliance housing (10).
13. Method for moving a handle (6) of a door (4) of a domestic appliance (1), in which as a function of the pivoting movement of the door (4), a handle part (6a) is pivoted relative to a base part (7) of the door (4) by way of a coupling device (21) characterised in that the coupling device (21) is embodied with a single-track cable pull (22) so that only one cable is present which is arranged so as not to run in parallel in a double- or multiple-track manner, but instead extends with its ends only between the handle (6) and a door axis (11) or a door hinge (8, 9) and thus only one tension wire is embodied, and which cable pull (22) is fixedly connected to the handle part (6a) with a first end (23) and which is coupled on the handle-part side to a first end (26) of a retaining spring (25) and with its end (28) facing away from a handle is connected to a pivot axis (11) of the door, wherein the retaining spring (25) is arranged with a second end (27) external to the handle part, for which purpose a coupling element (24) is arranged at a fixed position on the handle part (6a).
14. Method according to claim 13, characterised in that the retaining spring (25) is tensioned during the pivoting of the handle part (6a) and is automatically brought into the home position by the retaining spring (25) during the counter movement of the handle part (6a).

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