EP2913592A1 - Household appliance comprising a receiving space for food and a guiding profile with a pull-off resistant form for a guide roller - Google Patents

Abstract

The invention relates to a household appliance (1) with a receiving space (2) for food and with a door (4) for closing the receiving space (2), which in the open state can be lowered into a storage space (6) formed below the receiving space (2) wherein the door (4) is guided by means of a guide device (18) in a recessed movement and an extension movement, and the guide device (18) has at least one guide profile (21) formed on the door (4) into which at least one guide roller (23 , 24) and is guided in movement, wherein the guide profile (21) has an insertion opening (22) through which the guide roller (23, 24) extends into a guide space of the guide profile (21) and a first roller part (FIG. 26) has a greater outer dimension (d2) dimensioned in the depth direction of the door (4) than an inner dimension (t1) of an axial direction dimensioned in the depth direction of the door (4) ng the guide roller (23, 24) at least partially between the first roller member (26) and the insertion opening (22) extending guide profile part (29).

Description

The invention relates to a household appliance having a receiving space for food and having a door for closing the receiving space, which in the open state can be lowered into a storage space formed below the receiving space. The door is guided by means of a guide device in the recessed movement, wherein the guide device has at least one guide profile formed on the door, in which engages at least one guide roller and is guided by movement.

Such embodiments are from the DE 101 03 303 A1 known. The formed on the vertical narrow sides of the door and laterally open tracks are there shaped so that the rollers can be removed to the side.

Furthermore, such a retractable door of a cooking appliance is also made of DE 10 2011 086 273 A1 known.

It is an object of the present invention to provide a household appliance, in which the movement guidance of such a guide roller is improved in a guide profile in the countersinking or extending movement of the door.

This object is achieved by a household appliance according to the features of claim 1.

A household appliance according to the invention comprises a food receiving space and a door for closing the receiving space. The household appliance further comprises a storage space which is formed below the receiving space and which is designed to receive the door in the open state. The door is guided by means of a guide device in the retracting movement, in which the door is transferred from the closed state to the fully opened state, as well as in an extension movement, in which it is moved from the open position to the closed position. The guiding device comprises at least a trained on the door guide profile, in which engages at least one guide roller and is guided by movement. An essential idea of the invention is to be seen in that the guide profile has an insertion opening through which the guide roller extends into a guide space of the guide profile. An extending in the guide space first roller part of the guide roller has a dimensioned in the depth direction of the door larger external dimension, as measured in the depth direction of the door inside dimension of an axially in the guide roller at least partially extending between the first roller member and the insertion guide profile part. By such a configuration, the guide roller in the guide profile in the axial direction of the guide roller is arranged abziehsicher. Pulling out or jumping out of the guide roller laterally outward beyond the insertion opening is thereby prevented. Such a configuration improves the guidance of the rollers in the guide profile and thus also improves the motion guidance of the entire door in the case of such a retractable door.

With regard to the guide roller, in the axial direction and thus in the direction of the roller axis, it has in particular a plurality of roller parts or roller areas, which are thus to be understood as being arranged in a row in the direction of the roller axis. The guide roller is thus formed from a plurality of roller parts which each represent a section as a roller disc segment and thus form a partial area of the entire lateral surface of the guide roller with a respective circumferential surface surrounding the roller axis. The roller parts of a guide roller are integrally formed with each other. The subdivision into roller parts is therefore to be understood in particular only as a geometric delimitation of partial areas of the entire guide roller.

The dimensions of the first roller part and the guide profile part and their local position to one another, in particular in the direction of the roller axis, thus results in a kind of clasping of the first roller part or an overlapping of the first roller part by the guide profile part, so that slippage of the first roller part from the guide profile in the direction the guide roller axis is prevented from the insertion opening.

It is preferably provided that the guide profile part forms at least at the insertion opening, which has a smaller inner dimension than the outer dimension of first roller part of the guide roller. As a result, the movement space for the guide roller, in particular the first roller part in the interior of the guide profile is not undesirably reduced or restricted, so that furthermore a smooth and continuous motion guidance is made possible.

Preferably, it is provided that viewed in a horizontal section of the door, the guide profile part is conically tapered or dovetail-shaped towards the insertion opening. By this very specific geometric configuration, a continuous uniform taper is achieved, so that no undesirable abrupt corners and edges occur as projections on which could jam or spreader the first roller part.

It is preferably provided that the guide profile is formed symmetrically to a profile axis, which extends parallel or coaxial with a rotation axis of the guide roller and thus to the guide roller axis. The above-mentioned advantages in terms of a smooth and continuous as well as anti-spillage motion control as well as a highly reliable pull-off protection for the leadership role are further favored.

It can also be provided that the guide profile is formed asymmetrically to a profile axis which extends parallel or coaxial with a rotation axis of the guide roller. As a result of this embodiment, a one-sided axial pull-off protection or slip-out protection is virtually created, so that the guide profile can be provided with reduced material.

It is preferably provided that the guide roller has a second roller part, which has a smaller outer dimension than the first roller part. Thus, a guide roller is provided which, viewed in the direction of the guide roller axis, has two different roller parts which have different diameters. By this configuration, the Abziehsicherung is further improved because the larger first roller part can be dimensioned correspondingly large, so that the running movement is favored in the guide profile, on the other hand, a movement is prevented by the insertion device in the axial direction of the guide roller. On the other hand, by this second part of the roller guide roller massive and thus also mechanically be formed more stable and is thus viewed in the axial direction of the guide roller made thicker. Mechanical loads can be absorbed by the leadership improved. In particular, it is thus also achieved that the guide roller is dimensioned such that it also extends through the insertion opening and thus extends on both sides of the insertion opening. As a result, further stabilization and motion guidance are promoted by the second roller part in interaction with the clear dimension of the insertion opening.

It is preferably provided that a cone-shaped third roller part is formed between the cylindrical first roller part and the cylindrical second roller part. This embodiment is particularly advantageous in that therefore no abruptly discrete transition is formed as quasi vertical stage between the two first and second roller parts, but in this respect a continuous change in the diameter of the guide roller is achieved by this third roller part. Just this is favored with respect to the rotational movement of the roller and an occurring and optionally mechanical contacting the cross-sectional constriction of the guide profile for generating the Abziehsicherung, then as possible the mutually grinding of discrete corners or edges is prevented, so that the wear of the guide roller and / or Guide profile is substantially reduced.

It is preferably provided that an angle of inclination between a lateral surface of the third roller part is not equal to an angle of inclination of an inner wall which generates the conical shape of the guide profile part in the interior. By means of this inequality, on the other hand, it is prevented that as large a contact as possible of these inclined wall areas occurs, so that a binding of the motion guidance due to high friction is avoided.

It is preferably provided that the guide roller is rotatably mounted on a hinge bracket of a sliding hinge.

It is preferably provided that at least two, in particular arranged on a rigid hinge bracket, guide rollers are guided in a guide profile. The hinge bracket is preferably U-shaped and in particular about a horizontal axis extending in the width direction of the household appliance, also pivotable. As a result of this embodiment, the retracting movement of this retractable door is favored, and the two guide rollers, in particular, can be mounted and moved out of the way so as to be slip-proof or slip-proof in the direction of the roller axis.

It is preferably provided that the guide profile is formed of plastic. As a result, it can be produced easily and inexpensively and with minimal weight even with complex geometry.

It is preferably provided that a guide profile is arranged on the lateral narrow sides of the door and is thus arranged with the door closed on the vertical narrow sides. Preferably, in each case a guide profile is arranged on opposite narrow sides. It is also advantageous that the Maßdimensionierung between the outer dimension of the first roller part of the guide roller and the inner dimension of the guide profile part is formed only over a partial length of an overall length of the guide profile. This partial length is, in particular, at least as long as a maximum movement path of the guide roller in the guide profile is due to the movement path occurring between a completely closed position and a fully open position of the door. As a result of this configuration, it is achieved that a lateral pull-off protection is achieved over the entire maximum movement path of the guide roller relative to the guide profile. On the other hand, it is also possible, however, that a decoupling of the guide roller is made possible by the guide profile part, if by a specific, made by a user handling the guide roller is placed in that length of the entire length of the guide profile in which these dimensional dimensions are no longer available and in which in particular the inner dimension of the guide profile part is greater than the outer dimension of the first roller part, so that then the guide roller can be removed in the axial direction and in the direction of the guide roller axis from the guide profile on the insertion of the guide profile. As a result, the door can also be removed from the household appliance and, in particular, also the guide roller can be removed from the door. This may be particularly advantageous for cleaning purposes or for assembly or maintenance purposes.

The household appliance is in particular a device for preparing food, for example a cooking appliance, in particular an oven.

Further features of the invention will become apparent from the claims, the figures and the description of the figures. The features and feature combinations mentioned above in the description, as well as the features and combinations of features mentioned below in the description of the figures and / or shown alone in the figures, can be used not only in the respectively specified combination but also in other combinations or in isolation, without the frame to leave the invention. Thus, embodiments of the invention are to be regarded as encompassed and disclosed, which are not explicitly shown and explained in the figures, however, emerge and can be produced by separated combinations of features from the embodiments explained.

Fig. 1

eine perspektivische Darstellung eines Ausführungsbeispiels eines erfindungsgemäßen Haushaltsgeräts;

Fig. 2

eine perspektivische Darstellung einer Tür des Haushaltsgeräts gemäß Fig. 1;

Fig. 3

eine schematische Schnittdarstellung durch ein Führungsprofil und eine Führungsrolle der Tür gemäß Fig. 2;

Fig. 4

eine Schnittdarstellung entsprechend Fig. 3 von einem weiteren Ausführungsbeispiel eines Führungsprofils und einer Führungsrolle;

Fig. 5

eine Schnittdarstellung entsprechend Fig. 3 und Fig. 4 mit einem weiteren Ausführungsbeispiel des Führungsprofils und einer Führungsrolle; und

Fig. 6

eine weitere Schnittdarstellung entsprechend Fig. 3 bis Fig. 5 eines weiteren Ausführungsbeispiels einer Führungsrolle und eines Führungsprofils.

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

Fig. 1

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

Fig. 2

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

Fig. 3

a schematic sectional view through a guide profile and a guide roller of the door according to Fig. 2 ;

Fig. 4

a sectional view accordingly Fig. 3 another embodiment of a guide profile and a guide roller;

Fig. 5

a sectional view accordingly Fig. 3 and Fig. 4 with a further embodiment of the guide profile and a guide roller; and

Fig. 6

another sectional view accordingly FIG. 3 to FIG. 5 a further embodiment of a guide roller and a guide profile.

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 for preparing food as a cooking appliance. The oven 1 comprises a cooking chamber 2 which is bounded by walls of a muffle 3. On the front side, the muffle 3 has a charging opening, which can be closed by a door 4. The door 4 is not designed as a hinged door, but as a retractable door. This means that they are in the in Fig. 1 shown fully open position is inserted into a housing 5 in a lower region or shaft, which represents a storage space 6. This storage space 6 is separated from the cooking chamber 2 and formed and arranged below this. The door 4 comprises a handle 7, which is designed as a pivoting handle. This means that he is relative to the door 4, especially one in Fig. 1 not shown outer pane of the door 4 is pivotable. By such a configuration can also in the in Fig. 1 shown completely open position of the door 4 of the handle 7 front side are easily gripped by a user and the door 4 are again pulled out of the storage space 6 and then closed.

Only by way of example is shown in position and number that the oven 1 also cooking zones 8, 9, 10 and 11 has. Also in position and number by way of example only, an operating device 12 of the oven 1 is provided which has a display 13 and controls 14 and 15. The oven 1 is also designed to carry out a pyrolysis operation.

In Fig. 2 the door 4 is shown in a perspective view. There are a front panel 16 and an inner pane 17 can be seen. These two plate-like elements form an outside and an inside end, wherein the inner pane 17 is arranged facing the cooking chamber 2 in the closed state.

The door 4 is movable with a guide device 18 between a sinking movement and an extension movement and thus between a fully opened and a fully closed position.

The guide device 18 comprises on opposite vertical narrow sides 19 and 20 each have a guide profile, wherein in Fig. 20, only the trained on the narrow side 20 guide profile 21 can be seen. The guide profile 21 is formed of plastic. This guide profile 21 is designed to be open to the side and has an insertion opening 22.

Guide rollers 23 and 24 of the guide device 18 are guided in this guide profile 21. The guide rollers 23 and 24 are rotatably mounted on a common hinge bracket 25 of a sliding hinge. The hinge bracket 25 is also rotatably mounted and U-shaped.

In Fig. 3 is an embodiment of a geometry of a guide profile 21 and a guide roller 23 is shown in a horizontal sectional view and thus in a sectional plane corresponding to the xz planes. The guide roller 23 is formed asymmetrically in the direction of its roller axis A, which is the axis of rotation of the guide roller 23. It comprises in this context a first roller part 26, which has a first diameter d1. In addition, the guide roller 23 comprises a second roller part 27, which has an outer diameter d2, which is smaller than the outer diameter d1. In the axial direction between the first roller member 26 and the second roller member 27, a third roller member 28 is formed which is conical in shape and tapers from the first roller member 26 to the second roller member 27. The roller parts 26 to 28 are integrally formed with each other and the roller parts 26 to 28 form virtually sub-areas of a roller 23. The roller parts 26 to 28 thus represent in particular flat cylinder-like sectors or geometric sections or slices of the roller 23, each one to the Axis A encircling circumferential surface.

In addition, the guide profile 21 is designed so that a light inner dimension t1 of the insertion opening 22 is smaller than the outer diameter d1.

On the other hand, in the region in which the first roller part 26 is located in the interior of the guide profile 21, the guide profile 21 is formed with an inner dimension t2 that is greater than the inner dimension t1 and also greater than the outer diameter d1.

It is thus viewed in the direction of the axis A between the first roller member 26 and the insertion opening 22 a locally arranged guide profile part 29 is formed, the inner dimension is thus smaller than the outer dimension d1. As a result, the guide roller 23 in the direction of the axis A can not be pulled out of the guide profile 21 via the insertion opening 22 or slip out. It is thus formed a Abziehsicherung.

As in Fig. 3 it can be seen, the guide roller 23 is formed so that it extends with the second roller member 27 on both sides of the insertion opening 22.

Moreover, in the exemplary schematic illustration in FIG Fig. 3 the guide profile part 29 with respect to its cross-sectional minimization symmetrical to the axis A and symmetrical to an axis extending in the x-axis profile axis, which is parallel to the axis A or coaxial therewith formed.

In Fig. 4 a further embodiment of the guide profile 21 and the guide roller 23 is shown in a corresponding horizontal sectional view. In contrast to the representation according to Fig. 3 Here, with respect to the guide profile axis an asymmetrical profile is formed, which has only at one side of the insertion opening 22 has a corresponding taper, said taper 30 is designed conically to the second roller member 27 and the first roller member 26.

In Fig. 5 is shown in a further embodiment in a horizontal sectional view of a guide profile 21 and a guide roller 23. In this embodiment, in turn, a symmetrical taper of the guide profile 21 is shown, with tapered constrictions 30 and 31 are designed here.

In Fig. 6 a further embodiment of a guide profile 21 and a guide roller 23 is shown, wherein here more detailed geometric dimensioning information is shown. It can be seen that an axially measured thickness b1 of the first roller part 26 is smaller than or equal to a thickness b2 of the third roller part 27 and smaller than a thickness b3 of the second roller part 27. Again, an asymmetrical configuration of the tapered insertion opening 22 is shown here, but here also a symmetrical configuration as in Fig. 5 can be provided.

Moreover, it can be seen that an inclination angle α between the axis A and a sloped mantle wall 28a of the third roller member 28 is not equal to an angle β between the axis A and an inclined wall 30a of the taper 30.

LIST OF REFERENCE NUMBERS

1

oven

2

oven

3

muffle

4

door

5

casing

6

storage space

7

Handle

8th

cooking zone

9

cooking zone

10

cooking zone

11

cooking zone

12

operating device

13

display

14

operating element

15

operating element

16

windscreen

17

inner pane

18

guiding device

19

vertical narrow side

20

vertical narrow side

21

guide profile

22

insertion

23

leadership

24

leadership

25

hinge bracket

26

first roll part

27

second roll part

28

third roll part

28a

shell wall

29

Guide profile part

30

cone-shaped rejuvenation

30a

wall

31

cone-shaped rejuvenation

A

axis

b1

thickness

b2

thickness

d1

outer diameter

d2

outer diameter

t1

Internal dimensions

t2

Internal dimensions

α

angle

β

angle

Claims (13)

Domestic appliance (1) with a receiving space (2) for food and with a door (4) for closing the receiving space (2), which in the open state in a below the receiving space (2) formed storage compartment (6) is retractable, wherein the door (4) is guided by means of a guide device (18) in a sinking movement and an extension movement, and the guide device (18) has at least one guide profile (21) formed on the door (4) into which at least one guide roller (23, 24) engages and guided by movement, characterized in that the guide profile (21) has an insertion opening (22) through which the guide roller (23, 24) extends into a guide space of the guide profile (21) and a first roller part (26) extending in the guide space ) has a greater outer dimension (d2) dimensioned in the depth direction of the door (4) than an inner dimension (t1), dimensioned in the axial direction of the door (4), in the axial direction d he guide roller (23, 24) at least partially between the first roller member (26) and the insertion opening (22) extending guide profile part (29). Domestic appliance (1) according to claim 1, characterized in that the guide profile part (29) at least at the insertion opening (22) is formed, which has a smaller inner dimension (t1), as the outer dimension (d2) of the first roller part (26). Domestic appliance (1) according to claim 1 or 2, characterized in that the guide profile part (29) is conically tapered in a horizontal section of the door (4) to the insertion opening (22). Domestic appliance (1) according to any one of the preceding claims, characterized in that the guide profile (21) is formed symmetrically to a profile axis which extends parallel or coaxial with a rotation axis (A) of the guide roller (23, 24). Domestic appliance (1) according to one of claims 1 to 3, characterized in that the guide profile (21) is formed asymmetrically to a profile axis which extends parallel or coaxial with a rotation axis (A) of the guide roller (23, 24). Domestic appliance (1) according to one of the preceding claims, characterized in that the guide roller (23, 24) has a second roller part (27) which has a smaller outer dimension than the first roller part (26). Domestic appliance (1) according to claim 5, characterized in that the second roller part (27) extends in the axial direction on both sides of the insertion opening (22). Domestic appliance (1) according to claim 6 or 7, characterized in that between the cylindrical first roller member (26) and the cylindrical second roller member (27) is formed a cone-shaped third roller member (28). Domestic appliance (1) according to claim 3 and 8, characterized in that an angle of inclination (α) between a lateral surface (28a) of the third roller part (28) and a roller axis (A) unequal to an inclination angle (β) between a cone shape of the guide profile part ( 29) inside generating inner wall (30 a) and the roller axis (A). Domestic appliance (1) according to one of the preceding claims, characterized in that the guide roller (23, 24) is rotatably arranged on a hinge bracket (25) of a displaceable hinge. Domestic appliance (1) according to one of the preceding claims, characterized in that at least two, in particular arranged on a rigid hinge bracket, guide rollers (23, 24) are guided in a guide profile (21). Domestic appliance (1) according to one of the preceding claims, characterized in that the guide profile (21) is formed from plastic. Domestic appliance (1) according to one of the preceding claims, characterized in that the Maßdimensionierung between the outer dimension (d2) of the first Roller part (26) and the inner dimension (t1) of the guide profile part (29) is formed only over a partial length of an overall length of the guide profile (21) and the partial length is at least as long as a due to the between a fully closed position and a fully open position the door (4) is the maximum movement path of the guide roller (23, 24) in the guide profile (21).

Images