EP2096360B1 - Household device door - Google Patents

Description

The invention relates to a household appliance door, in particular cooking appliance door, with a door handle movably mounted on the household appliance door for adaptation to an operating hand movement, and a method for operating the household appliance door. DE 10 2004 006 764 A1 assumes a door with a door flap for closing a door opening, in particular a cooking appliance door opening, with a handle unit movably mounted on the door flap for adaptation to an operating hand movement. In order to provide an easy-to-handle door, which is particularly inexpensive and stable, it is proposed that the handle unit has at least one engagement recess opening toward a visible side.

DE 102 08 496 A1 relates to household appliance doors, which are pivotally mounted about a hinge axis and having a door handle which is pivotable about a parallel to the hinge axis Türgriffachse. The door handle is associated with at least one control gear which pivots the door handle in a first pivoting direction opposite the second pivoting direction in a pivoting movement of the door in a first pivoting direction. In order to achieve a reliable operation of the door handle, the door handle is pivotally mounted in a bearing housing, and the bearing housing extends in the axial direction along the entire door. The font DE 3935803A represents the closest prior art and discloses the features of the preamble.

It is the object of the present invention to provide a way to pivot the appliance door, which is characterized by improved functionality and a high-quality appearance.

This object is achieved by means of a household appliance door according to claim 1. Advantageous embodiments are in particular the dependent claims.

The appliance door, in particular a cooking appliance door, is equipped with a door handle that is movable for adaptation to an operating hand movement, in particular rotatably, mounted on the cooking appliance door. The door handle has a guide portion and a handle plate, the handle plate serving to be gripped by a user for operating (opening and closing) the door. The guide member is movably mounted on the cooking appliance door, while the handle plate on the guide member is selectively movable between a rest position in which the handle plate is not accessible when the household appliance door is closed, and a functional position in which the handle plate is tangible.

Through this change of position of the handle plate can create a high-quality appearance, since in the rest position, the handle part does not have to be tangible and so does not need to stand out of the door or a grip needs to be visible. In addition, the visible grip area is easier to clean. Also reduces the risk of injury to protruding handles.

Preferred is a household appliance door in which the handle plate with respect to the guide member is pivotable about a pivot axis which is parallel to a rotational axis of the guide member.

Preference is further a household appliance door, in which the handle plate in its rest position with the household appliance door closed front on the appliance door. The handle plate may protrude from the front of the door or be offset to the rear, with lateral gaps then z. B. can be covered by the guide part. This results in a high quality optically closed door front.

Then it is particularly preferred if the handle plate in its rest position with the household appliance door closed at the front substantially flush with the appliance door. This results in a visually particularly high-quality even-appearing door front.

Preferably, the door handle has an actuating element, for. B. a spring element, which presses the handle plate in the direction of the functional position. As a result, the unfolded handle part remains safe in its functional position.

It is also preferred if the grip plate is switchable by pressing up to a locking position and following automatic swinging between the rest position and the functional position, z. B. by the force of the actuating element in cooperation with a detent gate. This provides an easy-to-use and reliable panning or folding mechanism.

Preferred for easy and convenient operation is a household appliance door having at least one transmission device which is provided to determine a position of the guide member relative to the appliance door depending on a position of the household appliance door, in particular if the transmission device is provided, the guide member when opening the Household appliance door with an at least substantially constant rotational position in the room to lead.

In a method for operating such a household appliance door, the handle plate is pressed from its rest position to a detent position to open the appliance door, whereupon the handle plate pivots automatically from the guide member into the functional position.

To close the appliance door, the handle plate is pressed in the closed position of the household appliance door from the functional position back to the locking position, after which the handle plate automatically returns to its rest position.

FIG 1

zeigt in Schrägansicht von links vorne eine Gargerätetür im Bereich eines Türgriffs;

FIG 2

zeigt die Türöffnungs-Baugruppe aus FIG 1 als Schrägansicht von rechts vorne in einer Explosionsdarstellung;

FIGn 3A-3C

zeigen als Teilbilder die Gargerätetür aus FIG 1 in verschiedenen Stellungen des Türgriffs;

FIG 4

zeigt in Schrägansicht von vorne rechts den Türgriff in einer Ruhestellung;

FIG 5

zeigt in Schrägansicht von vorne links den Türgriff aus FIG 4 in seiner Funktionsstellung;

FIG 6

zeigt einen Vertikalschnitt durch ein Gargerät im Bereich der Gargerätetür.

In the following figures, the invention will be explained schematically with reference to an embodiment.

FIG. 1

shows an oblique view from the left front cooking appliance door in the region of a door handle;

FIG. 2

shows the door opening assembly FIG. 1 as an oblique view from the right front in an exploded view;

FIGS. 3A-3C

show as part of the cooking appliance door FIG. 1 in different positions of the door handle;

FIG. 4

shows in an oblique view from the front right, the door handle in a rest position;

FIG. 5

shows in an oblique view from the front left of the door handle FIG. 4 in its functional position;

FIG. 6

shows a vertical section through a cooking appliance in the cooking appliance door.

FIG. 1 shows a detail of a pivoting cooking appliance door 1 in the region of a door handle 2, which is connected to a control gear which controls a pivotal movement of the door, z. B. by type DE 10 2004 006 764 A1 , especially Fig. 2 , or the EP 1 481 141 B1 , The door handle 2 is constructed in several parts with a guide part 10 and a handle plate 11 pivotally mounted thereon and hinged to the guide part 10 in a handle cutout 12 of a bearing base 3 serving as the main support about an axis of rotation D. rotatably mounted. The lower part of the bearing 3 also carries rotatably two shafts with axle function 4 of the control gear with a respective terminal fixed thereto roller 5. The other end of the shafts 4 is connected to the guide member 10 of the door handle 2, whereby on the shafts 4 of the door handle 2 on both sides with the respective Rolls 5 is connected. Securing screws 6 provide between the shafts 4 and the rollers 5 for a firm connection.

The shafts 4 are guided in respective plain bearings 7, which are mounted on the bearing base 3. More precisely, each shaft 4 and the associated slide bearing 7 is mounted internally in two bushings of the bearing base 3, namely in a first, the door handle 2 closer passage 32 and a further remote from the second passage 33. The first passage 32 is a through hole through a executed to the rotation axis D perpendicular wall 34 of the bearing base 3 and keeps the shaft 4 thus on all sides. The second passage 33 is designed as a blind hole in lying on the axis of rotation D end block 35 of the bearing base 3 and thus keeps the shaft 4 on all sides and also serves as a lateral stop for the respective shaft 4. By this structure, the waves 4 against bending or Displacement due to a possibly asymmetrical, tensile load secured by ropes 8 stretched over the rollers 5. As a result, a width BT of the door handle 2 can now be designed far smaller than before, here z. B. smaller than one third of the width BG of the cooking chamber door, which still goes beyond the width of the lower storage part.

The bearing base 3 and the elements 2.4-7, 10, 11 supported thereon can be preassembled into a single door opening assembly and then married to the cooking appliance door 1, as in relation to FIG FIG. 2 will be explained in more detail.

The tensioned over the rollers 5 ropes 8 provide as a cable connection to another, not shown here, Part of the control gear ago. A front panel 9 covers the drive system or control gear.

When opening the cooking appliance door 1, the guide member 10 of the door handle 2 is rotated about the shafts 4 with the rollers 5, so that a rotational movement of the door 1 via the ropes 8 is synchronized with the door handle 2. In the embodiment shown here thus remains analogous to DE 10 2004 006 764 A1 or EP 1 481 141 B1 getting the rotational position of the door handle 2 in the room when opening or closing the cooking appliance door 1; Accordingly, the relative rotational position between the door handle 2 and the cooking appliance door 1. When opening the closed cooking appliance door 1 (α = 0 °), in which the door 1 by a door opening angle α of a maximum of about 90 ° (with the door fully open) to a lower, not shown pivot axis is pivoted, the door handle 2 is rotated from its closed position H about the rotation axis D by a maximum of approximately φ = - 90 ° relative to the rest of the cooking appliance door 1 in its open position H '.

This aspect of the door opening system or drive system makes it possible to freely design the door handle 2 in width and enables a simple process-safe drive.

FIG. 2 shows the door opening assembly FIG. 1 in an exploded view.

The bearing base 3 as a main carrier has a handle cut 12. For assembly, the plain bearings 7 are first pressed into the bearing base 3. Thereafter, the shafts 4 are pushed from the handle recess 12 to the outside by the sliding bearing 7 to the outer stop, which is provided by the bearing base 3, wherein they still take the respective role 5 before. The multi-part handle 2 has in detail the guide member 10, the handle plate 11, rollers 13, axles 14, plain bearings 15 and a leg spring 16 and is pre-assembled as a functional unit. The complete Handle unit 2 is then used for mounting in the handle cutout 12. The shafts 4 are subsequently moved back to the center or to the handle 12 until shaft surfaces 17 are seated in grip bearing openings 18. In this position, the rollers 5 are screwed by means of the locking screws 6. Finally, covers 19 are connected to the bearing base 3 by screws 20.

This assembly process can be performed prior to assembly of the cooking appliance door and, in addition to high process reliability, enables comparatively simple and inexpensive assembly.

An advantage of the pivoting handle 2 shown is that it is substantially flush with the front panel 9 in the rest position and thus complicates contamination of the door handle 2 and prevents possible injury to the handle 2. To open the oven door 1, the handle plate 11 can be brought by disengagement in their functional position, as described in more detail below. In the functional position, the entire door handle 2 rotates synchronously when pivoting the cooking door 1, but in opposite directions with the door, as already in FIG. 1 indicated and detailed below.

3A to 3C show the movements of the door handle 2 relative to the cooking appliance door 1 for an opening operation of the cooking appliance door 1. The door 1 is the front side except in the area of the door handle 2 covered by a front panel 36, z. B. made of glass.

3A shows the cooking appliance door 1 in the closed position (α = 0 °), in which the guide member 10 of the handle 2, which is positively connected to the waves, is in its rest position H and with respect to the door 1 is not rotated (φ = 0 ° ). At the same time, the handle plate 11 is in its rest position G, in which it pivoted into the guide member 10 is (see also FIG. 1 ) and substantially flush with the front panel 9 concludes. In front view, the handle plate 11 thus closes flush with the front panel 9. However, the handle plate 11 may protrude slightly forward. In an alternative embodiment, the handle plate 11 z. B. also be aligned with the front of the front panel 9. In the rest position G, the door handle 2 or the handle plate 11 can not be gripped by a user.

3B shows the still closed cooking appliance door 1, in which the guide member 10 is therefore still in its rest position H. The door handle 2 is made of in 3A shown position has been disengaged and is now in its functional position G ', in which the handle plate 11 is swung out by a fixed angle forward from the guide member 10 and unfolded. In the functional position G ', the handle plate 11 can be engaged by a user for opening or closing the cooking appliance door, as indicated by the engagement direction 0.

3C shows a door open by a door opening angle α cooking appliance door 1, wherein the guide member 10 of the handle 2 is rotated relative to the door 1 by φ = -α, and thus to the same extent the handle plate 11. In this figure, the angular position α of the cooking appliance door. 1 not faithfully reproduced, but for a better comparison of the handle movement with 3A and 3B not included. The handle plate 11 is still relative to the guide member 10 in its functional position G ', in which the handle plate 11 is swung forwards by a certain angle from the guide member 10. The rotational position of the door handle 2 in the room remains at a pivoting of the door 1 is substantially the same, as well as between 3B and 3C because the pivoting of the guide member 10 relative to the cooking appliance door 1 is substantially compensated by the pivoting of the cooking appliance door 1. 3C also shows a handle 36 formed by the guide member 10 and the handle plate. FIG. 4 shows the door handle 2 with the handle plate 11 in the rest position G, in which the handle plate 11 is engaged in the guide member 10. To unfold the handle plate 11 this is pressed by a user in the guide member 10 until reaching a detent position G ⁰ (overstroke). After reaching the locking position G ⁰ , the user can let go of the handle plate 11, which then automatically by the leg spring 16 from FIG. 2 driven in the reverse direction in the grip position G 'folds out. The pivot axis S of the handle plate 11 and the axis of rotation D of the guide member are offset parallel to each other. The now well visible handle-bearing opening 18 has a cross-sectional contour corresponding to a rectangle with rounded outward short sides to effectively prevent relative rotation of the guide member 10 against the wave shaft with its inserted shaft (not shown).

FIG. 5 shows the door handle 2 FIG. 4 with the handle plate 11 unfolded in the functional or handle position G '. An outer detent gate 21 ensures the unlocking of the handle plate 11 from the rest position G by means of overstroke in the detent position G ⁰ . The automatic rotational movement and the holding in Pos. G 'takes over here, too, the inner leg spring 16 FIG. 2 ,

The advantage of a retractable, swing-out handle plate, especially on stove doors, is that you need to disengage the handle plate 11 only when needed, namely before opening the door 1, by means of slight pressure in the functional position G '. Flush-fitting handle systems achieve a high level of protection against injuries and soiling and an appealing design.

FIG. 6 shows a vertical section through a cooking appliance in the cooking appliance door 1 at the level of one of the rollers 5 with parts of the control gear.

The rope 8 as part of a cable is attached to a lever 22 of a hinge unit 23. The hinge unit 23 is provided for pivotally connecting the door 1 about a horizontal door axis T to a muffle 24 of the cooking appliance, which encloses a cooking space and whose front edge forms a cooking appliance door opening 25. When mounting the door 1 on the muffle 24, the hinge unit 23 is locked with a leg 26 in a recess of the muffle 24. If the position (door opening angle) α of the door 1 is changed relative to the cooking appliance door opening 25 in an opening operation of the door 1, the lever 22 connected to a weight compensating mechanism of the door 1 via a spring 27 shifts downward in a vertical direction V and pulls the cable pull 8 with itself, and that moves with a change in the opening angle α by 90 °, the lever 22 by about 10 mm downwards, which corresponds to a quarter of the circumference of the guide rollers 5. In this case, the lever 22 is guided laterally and can be deflected vertically or in the direction of the door handle against a force of the spring 27 from its determined by the weight compensation mechanism, the spring 27 and by a voltage of the cable 8 rest position.

At the pulleys 5, the cable 8 is held non-slip with a holding means 28, so that the rollers 5 and the rigidly connected to this guide member 10 at a complete unfolding of the door 1, d. H. when the position α is changed by 90 °, also by 90 °. The change in the position φ of the rollers 5, the waves 4 (as parts of the control gear) and the guide member 10 on the one hand and the change in the position α on the other hand, the same amount and opposite. As a result, the door handle when opening and closing the door 1 is guided by the transmission device with a constant rotational position in space.

In addition to the roller 5, the rope 8 is guided over a deflection roller 29, which it from a vertical in a horizontal direction deflects. The cable 8 always extends between an outer plate 30 and an inner pane 31 of the door 1. The cable 8 engages in the horizontal direction at a first end of a - not shown here - spring, at the second end of a second cable 8 to the one described above Part mirror-symmetric part of the transmission device attacks.

LIST OF REFERENCE NUMBERS

1

cooking appliance

2

door handle

3

Bearing part

4

wave

5

role

6

locking screw

7

bearings

8th

rope

9

front panel

10

guide part

11

grip plate

12

handle cut

13

role

14

axis

15

bearings

16

Leg spring

17

wave surface

18

Grip bearing opening

19

cover

20

screw

21

latching guide

22

lever

23

hinge unit

24

muffle

25

Gargerätetüröffnung

26

leg

27

feather

28

holding means

29

idler pulley

30

outer pane

31

inner pane

32

first implementation

33

second implementation

34

wall

35

end block

36

grip

BG

Width of the cooking appliance door

BT

Width of the door handle

D

axis of rotation

G

rest position

G'

functional position

G ⁰

detent position

H

closed position

H'

open position

0

engaging direction

S

swivel axis

T

door axis

V

Vertical direction

α

Door opening angle

φ

Position angle of the guide part

Claims (10)

1. Domestic appliance door, in particular cooking appliance door (1), with a door handle (2) mounted on the domestic appliance door (1) in a moveable manner to adapt to an operation hand movement, wherein the door handle (2) has a guiding part (10) and a handle plate (11), and the handle plate (11) can be optionally moved on the guiding part (10) between

   - a neutral position (G), in which the handle plate (11) is not able to be grasped when then domestic appliance door (1) is closed, and

   - a function position (G'), in which the handle plate (11) is able to be grasped,

   characterised in that the guiding part (10) is mounted on the domestic appliance door (1) in a moveable manner.
2. Domestic appliance door (1) according to claim 1, characterised in that the handle plate (11) is able to be pivoted relative to the guiding part (10) about a pivot axis (S), which is parallel to an axis of rotation (D) of the guiding part (10).
3. Domestic appliance door (1) according to claim 1 or 2, characterised in that the handle plate (11) in its neutral position (G) terminates on the front side with the domestic appliance door (1) when the domestic appliance door (1) is closed.
4. Domestic appliance door (1) according to claim 3, characterised in that the handle plate (11) in its neutral position (G) terminates on the front side flush with the domestic appliance door (1) when the domestic appliance door (1) is closed.
5. Domestic appliance door (1) according to one of the preceding claims, characterised in that it has an actuating element (16), which presses the handle plate (11) in the direction of the function position (G').
6. Domestic appliance door (1) according to claim 5, characterised in that the handle plate (11) can be switched by being pressed in up to a latch position (G⁰) and subsequently automatically pivoting out between the neutral position (G) and the function position (G').
7. Domestic appliance door (1) according to one of the preceding claims, characterised in that it has at least one gearbox apparatus (4-6, 8, 22, 26-29), which is provided to determine an orientation (ϕ) of the guiding part (10) relative to the domestic appliance door (1) as a function of a position (α) of the domestic appliance door (1).
8. Domestic appliance door (1) according to claim 7, characterised in that the gearbox apparatus (4-6, 8, 22, 26-29) is provided to guide the guiding part (10) with a rotational orientation which is at least substantially constant in the space when the domestic appliance door (1) is opened.
9. Domestic appliance door (1) according to one of the preceding claims, characterised in that the handle plate (11) can be pressed in from its neutral position (G) up to a latching position (G⁰) in order to open the domestic appliance door (1), whereupon the handle plate (11) automatically pivots out from the guiding part (10) into the function position (G').
10. Domestic appliance door (1) according to one of the preceding claims, characterised in that, with the domestic appliance door (1) in the closed position (H), the handle plate (11) can be pressed in from the function position (G') up to the latching position (G⁰) in order to close the domestic appliance door (1), whereupon the handle plate (11) automatically returns to its neutral position (G).

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