EP1505352B1 - Household appliance door with removable plate - Google Patents

Abstract

The door has clamping parts (18.1, 18.2) for releasably fixing the panels (4, 6, 8, 10), movable between locked an unlocked positions. In the unlocked position, the panels are fitted with play between an elastic part fitted to one holding part (12) and the other holding part (16.1, 16.2). In the locked position, they are pressed up to the elastic part.

Description

The invention relates to a door for a household appliance referred to in the preamble of claim 1 Art.

Such a door is for example from the EP-A-1 076 210 known. The known door for a household appliance designed as a oven has a door frame and a disc releasably secured to the door frame by means of a clamping device, wherein the door frame an upper, a lower and two lateral holding parts and the clamping means arranged on the upper holding part elastic part and a in the assembled state of the door arranged on the lower holding part clamping part. In the assembled state of the door, the disc is pressed by means of the restoring force of the elastic member against the clamping part of the clamping device and fixed in this manner. In order to disengage the disc from the door frame, the user must press the disc as far as in the direction of the arranged on the upper holding part elastic member until the clamping part facing portion of the disc is no longer in engagement with the clamping part, so that the disc to the The elastic part facing region can be rotated. A disadvantage of the known door is that in releasing or inserting the disk by the user a relatively high force must be exerted on the disk, which then has to be maintained in the subsequent rotation of the disk.

From the DE 102 19 349 A1 is a door for a cooking appliance with a door frame formed from profile rails and one known by means of a releasably secured to the door frame disc, which is supported on a holding device. The disk can be locked by means of a clamping device designed as a locking device, wherein the locking device has a locking element designed as a clamping member which positively fixes the disk in a locking position of the locking device formed as a first position and releases the disk in a release position of the locking device designed as a second position.

The invention thus provides the problem of providing a door for a household appliance, in which the force required for the release or insertion of the disc is reduced in the door frame.

According to the invention, this problem is solved by a door for a household appliance having the features of patent claim 1. Advantageous embodiments and further developments of the invention will become apparent from the following subclaims.

The achievable with the present invention consist in addition to a reduction in the force required in the release or insertion of the disc or in the door frame, in particular, that while the user exerted on the disc force does not have to be maintained for a longer period. In this way, the risk of injury is reduced in the release or insertion of the disc from or in the door frame and the ease of use further improved, since the user does not press directly against the disc, which is usually made of glass. On the other hand, the user does not have to press the disc, which can have a considerable weight, simultaneously up against the elastic part and against its weight.

An advantageous development of the teaching according to the invention provides that the clamping part in the region in which it engages in the locking position in the gap has a recess and the disc in the locking position of the clamping part in the clamping part facing portion partially enclosed by the walls of the recess is. As a result, the disc is fixed in position in the locking position of the clamping part both parallel and perpendicular to the see-through surface.

A particularly advantageous embodiment provides that the clamping part is designed as a slide, which is movable in its transfer from the unlocking position into the locking position substantially longitudinally of the other holding part facing end face of the disc. In this way, the clamping part or the clamping device is structurally particularly simple realized.

An advantageous development of the aforementioned embodiment provides that the clamping part engages in the locking position in a direction extending along the direction of movement of the clamping part further recess of the other holding part. As a result, the relative position of the clamping part relative to the other holding part in the unlocking position of the clamping part is secured in a structurally particularly simple manner.

A particularly advantageous development of the aforementioned embodiment provides that the area of the clamping part engaging in the further recess of the other holding part is formed like a ramp, wherein the clamping part forms a clamping connection in the locking position with the opposite walls of the further depression. As a result, the securing of the position of the clamping member relative to the other holding part in the unlocking position of the clamping member is further improved.

Another advantageous development of the teaching according to the invention provides that the clamping part is designed as an eccentric, which in the unlocking position essentially in a in the assembled state of the door of the disc facing recess of the other holding part is added. In this way, a structurally particularly simple and visually pleasing storage of the clamping part is made possible on the other holding part.

An advantageous development of the aforementioned embodiment provides that the eccentric in the assembled state of the door has a substantially perpendicular to the transparent surface of the disc arranged and mounted on the other holding part rotation axis. As a result, a structurally particularly simple realization of the eccentric is made possible.

A particularly advantageous development of the teaching according to the invention provides that the clamping part is fastened by means of a latching connection to the other holding part. In this way, the mounting of the eccentric to the other holding part is easy to install and thus realized cost.

In principle, the clamping part according to type, size and material can be selected within wide suitable limits. Conveniently, when assembled door of the other holding part facing end face of the disc facing portion of the clamping member is formed like a ramp or curved.

Furthermore, an advantageous development of the teaching according to the invention provides that the other holding part consists of a left and a right Eckformteil on which in the assembled state of the door in each case a left or a right clamping part are arranged. As a result, the force to be expended by the user in releasing or inserting the disc in the door frame is distributed to both hands of the user instead of one hand, so that the user comfort is further improved.

Figur 1

eine perspektivische Ansicht eines ersten Ausführungsbeispiels einer erfindungsgemäßen Tür für Haushaltsgeräte,

Figur 2

eine perspektivische Ansicht eines oberen Halteteils des ersten Ausführungsbeispiels aus Fig. 1,

Figur 3

eine Explosionsdarstellung eines linken unteren Eckformteils mit einem linken Klemmteil des ersten Ausführungsbeispiels aus Fig. 1 in perspektivischer Darstellung,

Figur 4

eine perspektivische Detailansicht des ersten Ausführungsbeispiels aus Fig. 1 im Bereich des linken unteren Eckformteils, mit dem linken Klemmteil in Entriegelungslage,

Figur 5

eine perspektivische Detailansicht ähnlich Fig. 4, mit dem linken Klemmteil in Verriegelungslage,

Figur 6

eine Schnittdarstellung des ersten Ausführungsbeispiels aus Fig. 1 im Bereich des als linkes Eckformteil ausgebildeten zweiteiligen unteren Halteteils entlang einer Ebene parallel zu der Hauptausdehnungsrichtung zweier seitlicher Halteteile,

Figur 7

eine Explosionsdarstellung eines linken unteren Eckformteils mit einem linken Klemmteil eines zweiten Ausführungsbeispiels in perspektivischer Darstellung,

Figur 8

eine perspektivische Detailansicht des zweiten Ausführungsbeispiels aus Fig. 7 im Bereich des linken unteren Eckformteils, mit dem linken Klemmteil in Entriegelungslage und

Figur 9

eine perspektivische Detailansicht ähnlich Fig. 8, mit dem linken Klemmteil in Verriegelungslage.

An embodiment of the invention is shown purely schematically in the drawings and will be described in more detail below. It shows

FIG. 1

a perspective view of a first embodiment of a door according to the invention for household appliances,

FIG. 2

a perspective view of an upper holding part of the first embodiment Fig. 1 .

FIG. 3

an exploded view of a left lower Eckformteils with a left clamping member of the first embodiment Fig. 1 in perspective,

FIG. 4

a detailed perspective view of the first embodiment Fig. 1 in the area of the left lower corner molding, with the left clamping part in unlocking position,

FIG. 5

a perspective detail view similar Fig. 4 , with the left clamping part in locking position,

FIG. 6

a sectional view of the first embodiment Fig. 1 in the region of the two-part lower holding part designed as a left corner molding, along a plane parallel to the main expansion direction of two lateral holding parts,

FIG. 7

an exploded view of a left lower Eckformteils with a left clamping member of a second embodiment in perspective view,

FIG. 8

a perspective detailed view of the second embodiment Fig. 7 in the area of the left lower corner molding, with the left clamping part in the unlocking position and

FIG. 9

a perspective detail view similar Fig. 8 , with the left clamping part in locking position.

In Fig. 1 a first embodiment of a door 2 according to the invention for a household appliance is shown. In the household appliance, of which only the door 2 is shown, it is an oven. Fig. 1 The door 2 is a four-pane door, with an inner pane 4, an inner middle pane 6, an outer middle pane 8 and an outer pane 10. The panes 4, 6, 8 and 10 are in the in Fig. 1 illustrated assembled state of the door 2 to the door frame of the door 2 releasably secured. The door frame of the door 2 has a holding part 12 designed as an upper holding part, which consists of a left and a right upper corner mold part 12.1 and 12.2 and an upper holding bar 12.3. The upper retaining strip 12.3 is positively connected to the upper Eckformteilen 12.1 and 12.2. Alternatively, it is also possible to form the upper holding part 12 in one piece. One left and one right lateral holding part, of which in Fig. 1 only the right lateral holding part 14.2 is shown, forming the lateral frame parts of the door frame. The two lateral holding parts 14.2 are formed as retaining strips. The door frame of the present embodiment has a two-part designed as a lower holding part other holding part, which is formed from a left and a right lower corner mold part 16.1 and 16.2. The two lower corner moldings 16.1 and 16.2 are releasably connected to the respective corresponding lateral holding part 14.2 via screw. The upper retaining strip 12.3 and the two lateral holding parts 14.2 are fastened in the assembled state of the door 2 by gluing to the outer pane 10.

In this embodiment, a clamping member for the simultaneous detachable attachment of the discs 4, 6 and 8 in two parts, namely formed as a left and a right clamping member 18.1 and 18.2. In Fig. 1 are the left and the right clamping member 18.1 and 18.2 in their respective Unlocking position shown. For releasable attachment of the discs 4, 6 and 8, the clamping parts 18.1 and 18.2 of the user first on the lower edges of the discs 4, 6 and 8 postpone then along the lower end faces of the discs 4, 6 and 8 to the left or to right in the direction of the corresponding lower corner molding 16.1, 16.2 from the unlocking position to transfer to the locking position. In the locking position, the left-hand clamping part 18.1 or right-hand clamping part 18.2 engages in a further depression 16.1a formed on the lower left corner mold part 16.1 or in a further depression 16.2a formed on the lower right corner mold part 16.2. Details of this will be explained below with reference to the further FIG.

Fig. 2 shows the left upper corner mold part 12.1 and partially the upper retaining bar 12.3 of the upper holding part 12. The left upper corner mold part 12.1 has on the inside of three recesses 12.1a. The three vertically separated recesses 12.1a are penetrated by a transverse thereto arranged further recess. In this further recess an elastic member 20 made for example of silicone is inserted. In the assembled state of the door 2, the in Fig. 2 not shown discs 4, 6 and 8 with their upper edges in the corresponding recess 12.1a a. The discs 4, 6 and 8 press with their upper edges against the elastic member 20, so that the elastic member 20 is deformed due to its elasticity and on the discs 4, 6 and 8 exerts a restoring force. In the present embodiment, the elasticity of the elastic member 20 is further increased by transverse to the insertion direction of the discs 4, 6 and 8 extending holes 20.1. The discs 4, 6 and 8 are separated from each other by remaining between the recesses 12 webs 12.1 b. Further, the inner pane 4 and the outer middle plate 8 is defined by a respective edge web 12.1c in relation to the sheet plane vertical direction in their position. The discs are also set in the direction of the elastic member 20 in their position. Since the recesses 12.1a in the left Eckformteil 12.1 are also bounded to the left by walls, the discs 4, 6 and 8 are also fixed to the left side, relative to the leaf level, in their position. The same applies to the in Fig. 2 not shown right upper Eckformteil 12.2 or the upper right corner of the door. 2

In Fig. 3 the left lower corner molding 16.1 and the left clamping member 18.1 are shown in an exploded view. The left-hand clamping part 18.1 has a holding section 18.1a, a connecting web 18.1b and a handle 18.1c. To improve the user comfort is marked on the handle 18.1c, the direction of movement of the left clamping member 18.1 by a trained as a double arrow projection. The left clamping part 18.1 engages in the transfer of the in Fig. 3 shown unlocking position in the locking position, not shown, as already explained, with the connecting web 18.1 b in the further recess 16.1 a of the lower left Eckformteils 16.1 a. The handle 18.1 c is like a gag designed to further improve the handling by the user. How out Fig. 3 clearly shows, the left clamping member 18.1 can be inserted with the connecting web 18.1 b only up to a formed on the left lower corner mold part 16.1 stop 16.1b in the further recess 16.1a. At the holding portion 18.1 a of the left clamping part 18.1 are in the assembled state of the door 2 the discs 4, 6, 8 and 10 facing projections 18.1 d, 18.1e and 18.1f arranged. The projection 18.1d projects beyond the two other projections 18.1e and 18.1f and is inserted during the transfer of the left clamping part 18.1 from the unlocking position into the locking position between the two center disks 6 and 8. The projection 18.1e is inserted during the transfer into the locking position between the inner disk 4 and the inner middle disk 6 and the projection 18.1f engages over the lower edge of the inner disk 4. The areas of the holding portion 18.1 facing the lower end surfaces of the disks 4, 6 and 8 a of the left clamping part 18.1 are formed like a ramp. The material thickness of the holding portion 18.1 a increases in the faces of the discs 4, 6 and 8 facing areas relative to the leaf level from back to front. In this way, the transfer of the left clamping member 18.1 is connected in its locking position with less effort, since the discs 4, 6 and 8 in the transfer process slide up the trained on the left clamping member 18.1 ramps until the left clamping member 18.1 is in the locked position. In the locking position, the left clamping part 18.1 by the weight of the discs 4, 6 and 8 and by the restoring force of in Fig. 3 not shown elastic member 20 secured. In addition to this, it would also be conceivable that in the locking position of the left clamping part 18.1 in the further recess 16.1a of the left lower corner mold part 16.1 engaging connecting web 18.1 b in the direction of the opposite walls of the further recess 16.1 a, similar to the holding section 18.1 a, wedge or ramp-like form. The same applies to the in Fig. 3 not shown right lower corner molding 16.2 and the right clamping part 18.2 and the lower right corner of the door. 2

Fig. 4 shows the door 2 in a detail view in the region of the lower left corner of the door 2. The left clamping part 18.1 is similar to in Fig. 3 shown in the unlocked position.

Fig. 5 shows the door 2 in a similar view as in Fig. 4 , In contrast to the representation in Fig. 4 the left clamping part 18.1 is shown in the locking position. It can clearly be seen how the projections 18.1d and 18.1e of the left clamping part 18.1 are inserted between the lower edges of the discs 4, 6 and 8 or how the projection 18.1f engages over the inner disc 4. Analogous to the upper left Eckformteil 12.1 and the upper holding part 12, the discs 4, 6 and 8 are fixed in the assembled state of the door 2, ie in their locking position located left and right clamping parts 18.1 and 18.2 in their position. The position fixing perpendicular to the transparent surfaces of the discs 4, 6, 8 and 10th takes place on the one hand by the formed on the left and right clamping part 18.1, 18.2 projections, of which in Fig. 5 only the projections on the left clamping part 18.1, namely 18.1d, 18.1e and 18.1f are shown. On the other hand, the positional fixing of the discs 4, 6 and 8 by the restoring force of the elastic member 20, not shown, which presses the discs 4, 6 and 8 against the left and right clamping part 18.1 and 18.2. The lateral fixing of the discs 4, 6 and 8 takes place in an analogous manner as in the already explained left and right upper Eckformteilen 12.1 and 12.2.

In Fig. 6 the door 2 is shown in its assembled state in a parallel to the lateral support members 14.1 and 14.2 extending sectional view, the section through the left lower and upper corner molding 16.1 and 12.1 runs. The sectional view clearly shows how the disks 4, 6 and 8 are clamped between the elastic part 20 deformed by the transfer of the left and right clamping parts 18.1, 18.2 in their locking position and the clamping parts 18.1 and 18.2. The inner pane 4 is in the assembled state of the door 2 at the side edges of the lateral holding parts 14.1 and 14.2, of which in Fig. 6 only the left lateral holding part 14.1 is shown on. In the in Fig. 6 shown gap between the left side holding part 14.1 and the inner pane 4 is an in Fig. 6 not shown seal that completely fills the space shown. The same applies to the in Fig. 6 not shown right lateral holding part 14.2. If the left and right clamping part 18.1 and 18.2 again in the in Fig. 6 Not shown unlocking transferred, the discs 4, 6 and 8 are pressed due to the restoring force of the elastic member 20 in the direction of the left and right lower Eckformteils 16.1 and 16.2. In the unlocking the game between the individual discs 4, 6 and 8 and the clamping device, so the left and right upper corner moldings 12.1 and 12.2 and the upper retaining bar 12.3 and the left and right lower Eckformteilen 16.1, 16.2 such that the Disks 4, 6 and 8 can be removed one after the other from the door frame or the door 2.

In Fig. 7 a left lower corner molding 16.1 and a left clamping part 18.1 of a second embodiment of the door 2 according to the invention is shown. The second embodiment will be described with reference to FIG Fig. 7 to 9 explained only with reference to the differences from the first embodiment.

In the door 2 of the second embodiment is a three-disc door, with only a single center disc 6. The left clamping member 18.1 of this embodiment is formed in contrast to the left clamping member 18.1 of the first embodiment as an eccentric. The left clamping part 18.1 is rotatable about an axis of rotation 18.1g at a likewise modified left lower corner molding 16.1 stored, which made Fig. 8 clearly shows. For this purpose, the left-hand clamping part 18.1 is rotatably supported by means of a suitable latching connection known to the person skilled in the art at the left-hand lower corner molding part 16.1. The left clamping part 18.1 forms with the left lower corner molding 16.1 a structural unit. For this purpose, the left-hand clamping part 18.1 is mounted on the lower left corner mold part 16.1 by means of the rotation axis 18.1g and a receptacle 16.1c of the left lower corner mold part 16.1 complementary to the projections 18.1e and 18.1f arranged on the left clamping part 18.1 is formed, that the projections 18.1 e and 18.1f are substantially received in the unlocking position of the left-hand clamping part 18.1 in the receptacle 16.1c. Instead of inserting the left clamping part 18.1 along the end faces of the lower edges of the discs 4, 6 and 8 in the left lower corner mold part 16.1 in the transfer of the unlocking in the locking position, the left clamping member 18.1 of the second embodiment by 180 ° about the axis of rotation 18.1 g turned. For this purpose, a recess is provided on the upper end face 18.1h of the axis of rotation 18.1g of the left-hand clamping part 18.1, so that the user can turn the left-hand clamping part 18.1 without much effort, for example by means of a screwdriver. The same applies to the in the Fig. 7 not shown right lower corner molding 16.2 and the right clamping part 18.2. The advantage of this embodiment is, in particular, that the clamping parts 18.1 and 18.2 are held in their unlocking position on the door frame of the door 2. In addition, the left and the right clamping member 18.1 and 18.2 can be made identical, if instead of a ramp-like design of the holding portion 18.1a a curved shape is selected, in which the material thickness of the holding portion 18.1a during rotation into the locking position regardless of the direction of rotation increases.

As already explained, shows Fig. 8 the assembly consisting of left clamping part 18.1 and left lower corner molding 16.1 in its assembled state. The left clamping part 18.1 is in the unlocking position. Furthermore, the left lateral holding part 14.1 can be seen, on the outer disk 10 facing away from the outer surface, as already explained in the first embodiment, in the assembled state of the door 2, the inner pane 4 rests.

In Fig. 9 the left clamping part 18.1 is shown in the locking position. How out Fig. 9 easily seen, pushes the projection 18.1e in the transfer to the locking position between the in Fig. 9 not shown discs 4 and 6, while the projection 18.1 f engages over the lower edge of the inner pane 4.

The invention is not limited to the illustrated embodiments. For example, the number of slices can be selected within suitable limits. Furthermore, individual panes, for example the inner pane 4, may be coated with an infrared ray-reflecting layer on their inner sides facing the cooking space in order to achieve the best possible outer pane 10 during operation of the oven. Thus, the coated inner pane 4 is not installed by the user in a wrong and thus undesirable position, it can be provided that one of the inner pane 4 facing formed as a projection installation aid is arranged on one or more holding parts 12, 14 and / or 16. The inner pane 4 has a recess formed in a complementary manner to the projection or a recess.

In addition to the above-mentioned mounting options, other suitable and known to those skilled mounting options, detachable and insoluble, conceivable. Furthermore, the invention is not limited to baking ovens designed household appliances. In principle, all household appliances having a door 2 would be conceivable, it not being important whether the panes are transparent or not. The material for the door frame can also be selected within wide suitable limits. For example, aluminum is an advantageous material due to its low weight.

Claims (10)

1. Door (2) for a household appliance, in particular an oven or a cooker, with a door frame and a panel (4, 6, 8, 10) which is detachably fastened on the door frame by means of a clamping device, wherein the door frame has a pair of opposing holding elements (12, 16.1, 16.2) and the clamping device has an elastic element (20) arranged on the one holding element (12) and a clamping element (18.1, 18.2) arranged on the other holding element (16.1, 16.2) in the assembled state of the door (2),
   characterised in that
   the clamping element (18.1, 18.2) can be moved from an unlocking position to a locking position for detachable fastening of the panel (4, 6, 8, 10), wherein the panel (4, 6, 8, 10) is arranged in the unlocking position of the clamping element (18.1, 18.2) with play between the elastic element (20) arranged on the one holding element (12) and the other holding element (16.1, 16.2) and the clamping element (18.1, 18.2), in the locking position, engages in the gap between the other holding element (16.1, 16.2) and a front surface of the panel (4, 6, 8, 10) and as a result the panel (4, 6, 8, 10) presses against the elastic element (20).
2. Door (2) according to Claim 1,
   characterised in that
   the clamping element (18.1, 18.2) has a recess in the region (18.1a) in which it engages in the gap in the locking position and the panel (4, 6, 8, 10) in the locking position of the clamping element (18.1, 18.2) in its region facing the clamping element (18.1, 18.2) is partially surrounded by the walls (18.1d, 18.1e, 18.1f) of the recess.
3. Door (2) according to Claim 1 to 2,
   characterised in that
   the clamping element (18.1, 18.2) is embodied as a slide which is movable substantially longitudinally to the front surface, which faces the other holding element (16.1, 16.2), of the panel (4, 6, 8, 10) during its movement from the unlocking position to the locking position.
4. Door (2) according to Claim 3,
   characterised in that
   the clamping element (18.1, 18.2), in the locking position, engages in a further recess (16.1a, 16.2a) of the other holding element (16.1, 16.2) running longitudinally to the direction of movement of the clamping element (18.1, 18.2).
5. Door (2) according to Claim 4,
   characterised in that
   the region (18.1b) of the clamping element (18.1, 18.2) engaging in the further recess (16.1a, 16.2a) of the other holding element (16.1, 16.2) in the case of the assembled door (2) is embodied in a ramp-like manner, wherein the clamping element (18.1, 18,2), in its locking position, forms a clamping connection with the opposing walls of the further recess (16.a, 16.2a).
6. Door (2) according to Claim 1 or 2,
   characterised in that
   the clamping element (18.1, 18.2) is embodied as an eccentric which, in the unlocking position, is received substantially in a recess (16.1c) of the other holding element (16.1, 16.2) facing the panel (4, 6, 10) in the assembled state of the door (2).
7. Door (2) according to Claim 6,
   characterised in that
   the eccentric (18.1, 18.2) in the assembled state of the door (2) has a rotational axis (18.1g) arranged substantially perpendicular to the transparent surface of the panel (4, 6, 10) and mounted on the other holding element (16.1, 16.2).
8. Door (2) according to at least one of Claims 1 to 7,
   characterised in that
   the clamping element (18.1, 18.2) is fastened on the other holding element (16.1, 16.2) by means of a latching connection.
9. Door (2) according to at least one of Claims 1 to 8,
   characterised in that
   in the case of the assembled door (2)the region of the clamping element (18.1a) facing the front surface of the panel (4, 6, 8) which faces the other holding element (16.1, 16.2) is embodied in a ramp-like or cambered manner.
10. Door (2) according to at least one of Claims 1 to 9,
    characterised in that
    the other holding element comprises a left and a right angular element (16.1, 16.2) on which in the assembled state of the door a left and a right clamping element (18.1, 18.2) are respectively arranged.

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