Abstract
A cooking appliance includes a housing having a cooking chamber, a door, and a guide apparatus with a locking apparatus, which can lock the coupled state between the door and the guide apparatus. The locking apparatus has a bearing support with a holder, in which in the coupled state a bearing element engages. The locking apparatus has a tubular sleeve with a carrier, which is supported rotatably on the bearing support, so that in the coupled state when the sleeve is in a first rotational position, an unlocking position can be established between the sleeve and the bearing element and in the coupled state when the sleeve is in a second rotational position, a locking position can be established between the sleeve and the bearing element.
Claims
1. A cooking appliance, comprising: a housing; a cooking chamber configured in the housing; a door for closing the cooking chamber; a guide apparatus for guiding the door as the door is moved; and a coupling facility coupling the door to the guide apparatus, said coupling facility comprising a locking apparatus configured to lock a coupled state between the door and the guide apparatus and including a bearing support with a holder, in which in the coupled state a bearing element, which is arranged on the door, engages, said locking apparatus including a door-distal tubular sleeve supported on the bearing support for rotation into a first rotational position in which in the coupled state an unlocking position is established between the sleeve and the bearing element, and into a second rotational position in which in the coupled state a locking position is established between the sleeve and the bearing element, said sleeve including a carrier configured in one of two ways, a first way in which the carrier automatically contacts a contact element of the door when the door is moved, and causes upon further movement of the door to dynamically couple the sleeve to the door and to automatically rotate the sleeve from the unlocking position to the locking position, a second way in which the carrier automatically contacts a contact element of the guide apparatus when the door is moved, and causes upon further movement of the door to automatically rotate the sleeve from the unlocking position to the locking position when the door moves relative to the coupling element of the guide apparatus.
2. The cooking appliance of claim 1, wherein the carrier is arranged in a movement path of the door so that when the door pivots, the carrier is automatically brought into contact with the contact element of the door, and when the door pivots further, the sleeve is dynamically coupled to the door and the sleeve is rotated automatically from the unlocking position to the locking position.
3. The cooking appliance of claim 1, wherein the sleeve includes a circumferential wall having an outer face and running around a rotation axis of the sleeve, said carrier extending radially outward from the circumferential wall.
4. The cooking appliance of claim 3, wherein the carrier is oriented such as to cantilever freely.
5. The cooking appliance of claim 1, wherein the sleeve includes a circumferential wall having an outer face and running around a rotation axis of the sleeve, said carrier extending axially from the circumferential wall.
6. The cooking appliance of claim 5, wherein the carrier is oriented such as to cantilever freely.
7. The cooking appliance of claim 1, wherein the sleeve is supported for rotation about a rotation axis relative to the bearing element and extends parallel or coaxial to a pivot axis, about which the door is rotatable relative to the guide apparatus.
8. The cooking appliance of claim 1, wherein the holder in the bearing support has a radial opening at a radially outer end thereof for insertion of the bearing element into the holder.
9. The cooking appliance of claim 8, wherein the sleeve has a circumferential wall, in which an only partially circumferential cutout is configured and arranged in the locking position in a same location as the opening when viewed in an azimuthal direction about a rotation axis of the sleeve, so that the opening is uncovered in a radial direction.
10. The cooking appliance of claim 8, wherein the sleeve has a circumferential wall, in which an only partially circumferential cutout is configured and arranged in the locking position with an offset from the opening when viewed in an azimuthal direction about a rotation axis of the sleeve, so that the opening is closed by the circumferential wall in a radial direction and the bearing element is locked in the holder to prevent the bearing element moving radially out of the opening.
11. The cooking appliance of claim 1, wherein the bearing element is arranged in a fixed position on the door, so that to couple the door to the guide apparatus insertion of the bearing element is only possible in a first oblique position of the door as a coupling fitting position, with the coupling fitting position being different from a fully opened position of the door and different from a fully closed position of the door, said door being arranged in the coupling fitting position at a distance from the carrier in an azimuthal direction about a rotation axis of the sleeve.
12. The cooking appliance of claim 11, wherein the contact element of the door is arranged in the coupling fitting position at a distance from the carrier in the azimuthal direction about the rotation axis of the sleeve.
13. The cooking appliance of claim 11, wherein a contact position of the door, which contact position is different from the first oblique position and in which the carrier has just been brought into mechanical contact with the contact element, is a position that is different from the fully opened position of the door and different from the fully closed position of the door.
14. The cooking appliance of claim 13, wherein the contact position is a second oblique position, in which the door is opened further in relation to a vertical than in the first oblique position or the door is opened less far in relation to the vertical than in the first oblique position.
15. The cooking appliance of claim 1, further comprising a fixing apparatus configured to fix the sleeve in an azimuthal direction about a rotation axis at least in the locking position.
16. The cooking appliance of claim 1, wherein the housing has a stowage space for receiving the door, when the door is introduced into the housing as the door opens, said guide apparatus being configured to guide the door as the door is moved into the stowage space or as the door is moved out of the stowage space.
17. The cooking appliance of claim 16, wherein the guide apparatus has an engagement region, into which the carrier extends when viewed in a widthwise direction of the cooking appliance, said coupling element of the guide apparatus having a boundary wall configured to form a stop against which the carrier strikes as the door is inserted into the stowage space, so that when the door is pushed further into the stowage space, the sleeve is rotatable automatically into the locking position about a rotation axis of the sleeve.
18. A method for fitting a door of a cooking appliance on a guide apparatus of the cooking appliance, said method comprising: establishing a coupling fitting position of the door in relation to the guide apparatus; rotating a sleeve of a locking apparatus, which is configured to lock a coupled state between the door and the guide apparatus, into a first rotational position for establishing an unlocking position of the locking apparatus; inserting a bearing element on the door into a door-distal holder of the locking apparatus; and moving the door out of a first oblique position, which is held by the door in the coupling fitting position, into a different position, thereby causing the sleeve to rotate automatically from the unlocking position to a locking position and establishing a locked state of the locking apparatus.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0040] Exemplary embodiments of the invention are described in more detail below with reference to schematic drawings, in which:
[0041] FIG. 1 shows a perspective view of an exemplary embodiment of an inventive cooking appliance;
[0042] FIG. 2 shows a schematic perspective view of an exemplary embodiment of the door of the cooking appliance according to FIG. 1;
[0043] FIG. 3 shows a perspective sectional view through a sub-region of the cooking appliance according to FIG. 1 with a door in a coupling fitting position and with a guide apparatus of the cooking appliance;
[0044] FIG. 4 shows a schematic view of sub-components of a guide apparatus for guiding the door;
[0045] FIG. 5 shows a sectional view of sub-components of the door, a guide apparatus and a locking apparatus of the cooking appliance with the door in the coupling fitting position and a sleeve of the locking apparatus in an unlocking position;
[0046] FIG. 6 shows the view according to FIG. 5 with the door in a second oblique position and with a contact element of the door in a contacting position with a carrier of the sleeve;
[0047] FIG. 7 shows a sectional view according to FIG. 5 and FIG. 6, in which the sleeve is arranged in the locking position;
[0048] FIG. 8 shows a view according to FIG. 5, showing an exemplary embodiment of a corresponding sleeve of the locking apparatus that is different from FIG. 5;
[0049] FIG. 9 shows a perspective view of the embodiment in FIG. 5;
[0050] FIG. 10 shows a perspective view of FIG. 9 with the sleeve in the locking position according to FIG. 7;
[0051] FIG. 11 shows a perspective view of a further exemplary embodiment of a cooking appliance with a sleeve that is different from previous views and a similarly different embodiment of a locking apparatus; and
[0052] FIG. 12 shows perspective views of further exemplary embodiments of a sleeve of a locking apparatus.
DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS OF THE PRESENT INVENTION
[0053] Identical elements or those of identical function are shown with identical reference characters in the figures.
[0054] FIG. 1 shows a schematic view of an exemplary embodiment of a cooking appliance 1. The cooking appliance 1 can be for example an oven or a steam cooking appliance or a microwave appliance. The cooking appliance 1 has a housing 2. Arranged in the housing 2 is a muffle 3. Arranged in the housing 2 is a cooking chamber 4. This is delimited in particular by the walls of the muffle 3. The cooking appliance 1 has a front face 5. Configured on the front face 5 is a loading opening 6, through which the cooking chamber 4 can be accessed. The cooking appliance 1 also has a door 7. The door 7 is arranged so that it can close the cooking chamber 4.
[0055] In one exemplary embodiment the door 7 can be a simple folding door. This means that it is arranged pivotably on the housing 2. A relevant pivot axis then runs in a widthwise direction (x-direction) of the cooking appliance 1. The widthwise direction is oriented perpendicular to the plane of the figure.
[0056] In the exemplary embodiment shown in FIG. 1 the door 7 is a pivotable door. This means that it can be pushed into a stowage space 8 of the cooking appliance 1 when the door 7 is opened. The stowage space 8 is a separate space from the cooking chamber 4. It is arranged below the cooking chamber 4 when viewed in the heightwise direction (y-direction) of the cooking appliance 1. It is separated from the cooking chamber 4. The door 4 is shown from the side in FIG. 1. It can have a handle 9. The handle 9 can be fixed or rotatable. The door 7 also has a door leaf 10. The door leaf 10 can comprise a number of separate door panels. A front panel and an inner panel can then be provided. These are oriented parallel to and some distance from one another. The panel arrangement of the door leaf 10 can also comprise at least one intermediate panel. These at least two separate panels are kept apart by door profiles. FIG. 1 only shows one door profile 11 for the sake of simplicity. When viewed in a widthwise direction a door profile 11 is a support structure arranged on the left or right side, being configured as a profiled bar oriented in a heightwise direction. In one exemplary embodiment a guide path 12 can also be configured in such a door profile. This is open to the side and therefore in the widthwise direction. A hinge part 13 of a hinge can engage in the guide path 12, in particular with rollers 14 and 15. The hinge part 13, shown here in an exploded view with the other components, can be pivoted for example about a hinge axis A perpendicular to the plane of the figure. The door leaf 10 or door 7 can be moved relative to the hinge part 13. This means that, when the door 7 is opened for example, the rollers 14 and 15 slide along in the guide path 12 allowing the door 7 to be pivoted about a pivot axis horizontal to the plane of the figure and then also to be inserted into the stowage space 8 in the exemplary embodiment shown.
[0057] The cooking appliance 1 also has a guide apparatus 16. The guide apparatus 16 is configured outside the door. On a folding door the guide apparatus 16 can be arranged in a fixed position for example and have just one corresponding pivot hinge, which can be coupled to a corresponding part of the door 7, without allowing a corresponding pivot movement. In the exemplary embodiment shown in FIG. 1, in which the door 7 is a pivotable door, the guide apparatus 16 also has a guide carriage 17. The guide carriage 17 has opposing guide jaws 18. These are connected by a connecting rod 19 (FIG. 4). The guide jaws 18 can have sliding elements or roller elements. The carriage 17 uses these to engage directly in opposing guide paths 20 (FIG. 1). These are configured on opposing side boundary walls delimiting the stowage space 8. The guide carriage 17 of the guide apparatus 16 can therefore be arranged so that it can be displaced correspondingly. In contrast the hinge part 13 can be arranged in a fixed position so that it can only be pivoted about the pivot axis A. Opposing hinge parts 13 are also configured here, engaging in opposing guide paths 12, which are configured on edge faces of the door leaf 10.
[0058] FIG. 2 shows a schematic perspective view of the door 7. The door 7 has a bearing element 21 in a lower region. The bearing element 21, which is arranged on the door, is positioned in particular in a fixed position on the door leaf 10. In one exemplary embodiment the bearing element 21 is connected to a connecting rod 22 on the door 7. On the side opposite in the widthwise direction (x-direction) the door 7 has a further bearing element 21. The bearing element 21 can be for example a bearing pin projecting outward in a widthwise direction. It can be formed in a cuboid manner for example. The bearing elements 21 are arranged on opposing lower corner regions of the edge faces of the door leaf 10.
[0059] FIG. 1 shows the state, in which the door 7 is decoupled from the guide apparatus 16. In contrast FIG. 3 shows a perspective sectional view of a partial detail of the cooking appliance 1. The coupled state between the door 7 and the guide apparatus 16 is shown here. The sectional plane here is spanned by the heightwise direction and the depthwise direction (z-direction). It also shows an inner panel 23 and a front panel 24 of the door leaf 10 by way of example. A further door profile 25 is also shown as a panel support. Two parallel door profiles 11 and 25 are therefore present.
[0060] FIG. 3 also shows a state, in which the door 7 is coupled to the guide apparatus 16. The cooking appliance 1 has a coupling facility 26 for this purpose.
[0061] As also shown in FIG. 4, a guide jaw 18 has a bearing support 27. This is configured correspondingly for the corresponding opposing carriage jaws 18. The bearing support 27 has a holder 28. This can be a channel or groove. The holder 28 is provided as required in each instance to receive the opposing bearing elements 21. The bearing support 27 with the holder 28 is also part of a locking apparatus 29 of the cooking appliance 1.
[0062] FIG. 5 shows a detail of the cooking appliance 1 in the region of the locking apparatus 29. A view from the outside is shown looked at in the widthwise direction. In this respect it is similar to the view shown in FIG. 1. FIG. 3 in contrast shows a sectional view, in which the view is as it were outward from inside. FIG. 5 is therefore a view from the opposite side to FIG. 3. FIG. 5 also shows a sectional view, which therefore looks inward from outside rather than outward from inside.
[0063] As shown here, the bearing element 21 is already inserted into the holder 28. This state is achieved by arranging the door 7 in a coupling fitting position, The coupling fitting position is a first oblique position. The first oblique position is however different from the fully closed position of the door and also different from the fully opened position of the door. FIG. 5 shows a first oblique position of the door 7. As shown by the arrow P1, in this oblique position, as also shown in FIG. 1, a coupling takes place between the door 7 and the guide apparatus 16. To this end the bearing element 21 is inserted linearly into the holder 28 according to the arrow direction P1.
[0064] In the exemplary embodiment shown the locking apparatus 29 also has a sleeve 30. This can also be referred to as a ring. The sleeve 30 is a separate part. It is arranged rotatably directly on the bearing support 27. It therefore engages peripherally around the bearing support 27. The rotation axis B of the sleeve 30 is oriented perpendicular to the plane of the figure. The rotation axis B is advantageously also arranged coaxially to the pivot axis of the door 7. As also shown in FIG. 5, the sleeve 30 has at least one carrier 31. The carrier 31 is molded on an outer face of a circumferential wall 32 of the sleeve 30. It projects radially outward therefrom. The carrier 31 is configured as a single piece with the sleeve 30. The sleeve 30 can be rotated relative to the bearing support 27. The sleeve 30 is secured axially on the bearing support 27. This means that it is arranged in a secured position on the bearing support 27 in the direction of the rotation axis B. A snap-fit connection or the like can be provided here for example.
[0065] The bearing sleeve 30 can be arranged rotatably on the bearing support 27 in at least two different rotational positions relative thereto. A first rotational position here is defined by an unlocking position of the locking apparatus 29. In the unlocking position the holder 28 is uncovered in a radial direction. To this end an entrance or opening 33 in the holder 28 is radially open. An opening 33 is therefore configured at a radially outer end of the holder 28 and is freely accessible in the unlocking position of the sleeve 30. The unlocking position of the sleeve 30 is established in the unfitted state between the door 7 and the guide apparatus 16. This allows the bearing element 21 to be inserted without obstruction by way of the opening and the corresponding opening 33 into the holder 28 during corresponding coupling.
[0066] As also shown in FIG. 5, in the coupling fitting position the door 7 is also some distance from the carrier 31.
[0067] In order now to secure and lock the coupled state between the bearing element 21 and the holder 28, provision is made for further movement of the door 7.
[0068] To this end, starting from the view in FIG. 5, in a further exemplary embodiment the door 7 is moved into a second oblique position that is different from the first oblique position. In an exemplary embodiment according to FIG. 6 the second oblique position can be such that it is close to the fully opened position. The door 5 is therefore opened or pivoted further from the first oblique position. This causes a contact element 34 of the door 7 to come into contact with the carrier 31, as shown in FIG. 6. FIG. 6 therefore shows the second pivot position of the door 7, representing mechanical contact between the contact element 34 and the carrier 31. As also shown in FIG. 5 and FIG. 6, in one exemplary embodiment the locking apparatus 29 has a fixing apparatus 35. The fixing apparatus 35 can fix or maintain the unlocking position of the sleeve 30 azimuthally about the rotation axis A. In a further exemplary embodiment it is possible additionally or instead for a locking position of the sleeve 30 to be fixed by the fixing apparatus 35. In one exemplary embodiment the fixing apparatus 35 has radially acting snap-fit connections. To this end a snap-fit element, which is configured on the inner face of the sleeve 30, can snap into snap-fit holders, which are configured on the outer face of the bearing support 27.
[0069] From the position of the door 7 in FIG. 6, if the door 7 is pivoted further toward to the full opened position, the directly contacted state between the contact element 34 and the carrier 31 can cause the sleeve 30 to rotate automatically about the rotation axis B. This brings about a relative movement of the sleeve 30 relative to the bearing support 27. This twists the sleeve 30 so that the locking position is established. This means that the circumferential wall 32 of the sleeve 30 is displaced about the rotation axis B such that the holder 28 is closed radially. This results in locking so that the bearing element 21 can no longer be pulled out of the holder 28 by way of the opening 33 in the radial direction. It can therefore be seen in FIG. 7 that a partially circumferential cutout 36 on the circumferential wall 32 is rotated further about the rotation axis B in the circumferential direction so that it is arranged outside the opening width of the holder 28 in an azimuthal direction. As also shown in FIG. 7, the snap-fit element of the fixing apparatus 35 has left the first snap-fit element holder on the outer face of the bearing support 27 and has snapped into the azimuthally further snap-fit holder in the locking position of the sleeve 30 shown in FIG. 7. This means that the locking position is also fixed in an advantageous exemplary embodiment.
[0070] In one exemplary embodiment provision is made for the sleeve to be in such a rotational position in the locking position that the carrier 31 in particular is again some distance from the contact element 34. As in the exemplary embodiment shown the locking position is preferably rotated so far that the rotational position is beyond the position, in which the door 7 reaches the fully opened position, it is also possible to prevent further force action on the sleeve 30 causing damage to it. The locking position is therefore advantageously formed about the rotation axis B in the circumferential direction so that the door 7 has reached the maximum opened position in respect of its pivot position. Further pivoting is no longer provided for or possible, so no further azimuthal pivot force can be exerted on the sleeve 30 and in particular on the carrier 31.
[0071] In one preferred exemplary embodiment provision is made for the locking position of the sleeve 30 to be a rotation angle greater than 1°, in particular between 3° and 7°, in particular 5° further in the direction of the pivot direction of the door 7 than a door 7 that is pivoted to the maximum. Provision can be made for the coupling element 34 to carry the sleeve 31 along up to the fully pivoted position of the door 7 and the subsequent rotational movement of the sleeve to the locking position to be performed independently. For example this residual rotation of the sleeve 30 can be achieved automatically by a correspondingly configured snap-fit connection. This prevents a situation in which the door 7 strikes the sleeve 30 and damages it or pushes it out of the locking position during subsequent opening and closing of the door 7. The same provision can be made in an exemplary embodiment, which is based on FIG. 8 so that the fully closed position of the door 7 is relevant.
[0072] FIG. 8 shows a further exemplary embodiment as an alternative to the preceding drawings. In contrast to FIG. 5 to FIG. 7 provision can be made here for the carrier 31 to be arranged and be radially distanced from the outer face of the circumferential wall 32 so that from the coupling fitting position of the door 7 shown in FIG. 5 the second oblique position is toward the fully closed position of the door 7. In contrast to FIG. 6 and FIG. 7 therefore a movement of the door 7 is required from the coupling fitting position shown in FIG. 5 toward the fully closed position of the door 7, in order to make contact with the relevant carrier 31 and then move toward the closed position when moved further and thus to bring about the automatic establishing of the locking position of the sleeve 30.
[0073] FIG. 9 shows a perspective view of the embodiment in FIG. 5. The cutout 36 in the circumferential wall 32 is clearly shown. Also shown here are the rotation axis B and the pivot axis C of the door 7, which is oriented coaxially thereto here.
[0074] FIG. 10 shows the corresponding perspective view of the components but with the sleeve 30 in the locking position.
[0075] If the locking position is established after fitting, the sleeve 30 remains in the locking position, even if the door 7 is subsequently pivoted to and fro between the fully closed position and the fully opened position. Cancellation of the locking position of the sleeve 30 can be brought about in particular manually by a user. To this end the user can grip the sleeve 30 on the outside and twist it about the rotation axis B so that the unlocking position is established again. The door 7 can then be removed and thus decoupled from the guide apparatus 16 when the door 7 takes up the defined coupling fitting position and thus the first oblique position.
[0076] FIG. 11 shows a perspective partial view of a further exemplary embodiment of the locking apparatus 29. In contrast to the preceding exemplary embodiment the sleeve 30 here does not have at least one radially projecting carrier 31. Instead at least one axial carrier 31 is provided here in the direction of the longitudinal axis of the sleeve 30 and therefore also the rotation axis B. This engages in a coupling element 37. The coupling element 37 here is a holder or a recess in a guide part 38 of the guide apparatus 16 formed in a widthwise direction. This results in a stepped stop, against which the carrier 31 strikes on the movement path in the depthwise direction. In particular the recess delimits a holder in a side wall, which delimits the stowage space 8. In particular the recess is configured in the region of the guide path 20. This exemplary embodiment is preferably provided for a lowerable door 7, as it is necessary in particular here that the door 7 is not only pivoted but in particular that it is also moved linearly into the stowage space 8, as shown by the arrow P2. Also the overlap provided in the widthwise direction of the cooking appliance 1 between the axially oriented carrier 31 and the recess causes the door 7 to be moved further from its specific first oblique position and be lowered into the stowage space 8. In this process the carrier 31 also moves relative to the recess in the depthwise direction (z-direction) of the cooking appliance 1. This continues until it strikes a boundary wall 39, which delimits the recess to the rear in the depthwise direction. After this stop and a further movement of the door 7 in direction P2 the sleeve 30 is rotated about its rotation axis B until the locking position is established again. To this end the opening 33 in the holder 28 of the bearing support 27 is locked or blocked again. The bearing element 21 (not shown here) is then secured or locked so that it cannot slide radially out of the holder 28.
[0077] This position of the sleeve 30 is then also permanently maintained. In particular it is also fixed by the fixing apparatus 35. The locking position can also be cancelled manually here for example by a user, by corresponding twisting about the rotation axis B.
[0078] FIG. 12 shows a perspective view of a further exemplary embodiment of a sleeve 30. The sleeve 30 here is not configured as a single piece from one material. Instead an outer sleeve 30a can be provided. This can be configured as a single piece from one material, for example metal. In the exemplary embodiment shown the sleeve 30 also comprises an inner sleeve 30b. This is made in particular from a different material from the outer sleeve 30a. It can be made of plastic for example. In particular a material is provided here, which has a greater ability to slide than the material of the outer sleeve 30a. For example the material of the inner sleeve 30b can be sprayed onto the inner face of the outer sleeve 30a. The sleeve 30 according to FIG. 12 is shown according to the exemplary embodiment in FIG. 11. The at least one carrier 31 is oriented axially. The embodiment according to FIG. 12 with the inner sleeve 30b and the outer sleeve 30a can however also be configured with the radially projecting carrier 31 in the exemplary embodiment.
