EP2778279B1 - Housing for household devices, for example, a laundry dryer, washing machine, dishwasher or the like - Google Patents

Description

Housing for household appliances such as tumble dryer, washing machine, dishwasher or the like.

The invention relates to a housing for household appliances such as tumble dryer, washing machine, dishwasher or the like, which comprises a floor module and side walls, a front wall and a rear wall, wherein the rear wall (2) for frameless construction of the housing in a self-holding defined pre-assembly position on the floor module can be attached, wherein at the bottom module at least one center pin for centering the rear wall and at least one latching hook for holding the attached rear wall are provided, which cooperate with corresponding punched holes and on the rear wall in the scheduled state.

From the prior art are according to the DE 103 03 131 , of the DE 198 23 424 as well as from the DE 38 13 462 Washing machine housing or housing for household appliances known. In these known from the prior art housings, there are different housing designs for each surface or mounting style, which requires an early variant formation in the housing structure. In these known from the prior art housing designs, there is the disadvantage that the loads acting from the outside on the device are not properly distributed. The externally visible slit images are not formed as narrow and uniform as possible, the proposed housing forms make assembly unfriendly.

By the WO 2012/062896 A1 is a housing of a clothes dryer with the features mentioned above known.

The DE 20 2006 010 028 U1 discloses a household appliance in which a panel is attached. For this purpose, punched holes are provided on the housing into which engage an integrally formed on the diaphragm center pin for centering and a latching hook.

The invention thus raises the problem of forming a housing for household appliances, such as a tumble dryer, a washing machine or a dishwasher, which on the one hand overcomes the disadvantages described, on the other hand, the housing should be made without a separate inner frame and in particular an easy to install Integration of the back wall should be provided.

According to the invention, this problem is solved by the features of patent claim 1 and claim 9. Advantageous embodiments and further developments of the invention will become apparent from the following subclaims.

The advantages achieved by the invention now consist in that a simple assembly / disassembly of the rear wall is ensured, with a defined pre-assembly position of the rear wall is provided by means of a self-hold on the floor module for the fitter. In this case, by the defined positioning of the rear wall in the floor module and thus in the device from the outside loads acting on the rear wall into the device, that is introduced into the floor module, so that the visible from the outside slit images are as narrow and uniform as possible.

To create the housing, the front wall module is mounted to the floor module. After mounting the drum, the rear wall is mounted from the back of the floor module, this will be described in more detail below. The rear panel is hooked slightly obliquely behind the floor module and thereby already rudimentary on the center pin. In this case hook one or more Blechankippungen on the rear wall behind corresponding recesses in ribs or other types of undercuts of the floor module and prevent so that after joining the lower rear wall area this can no longer slide down from the pin. This results in a so-called temporary self-retention. Then the rear wall is tilted on the center pivot sitting in the vertical high. In this case, a latching element of the floor module dives through a hole geometry of the rear wall and locked there. This locking prevented after joining a tilting of the upper rear wall portion to the rear and thus slipping out of the rear wall of the center pin of the floor module. The embossment on the hole geometry in the rear wall for the latching hook is designed so that the latching hook for easy insertion first meets a rounded sheet metal edge. In the case of the embossing / hole geometry, the upper embossing area is clearly curved outwards in order to ensure better splash water safety and a lower risk of injury from protruding edges in this area. After locking the fitter can let go of the back wall, since the self-hold is now given. After joining, the back wall is defined in height above the center post of the floor module. The center pin also defines the pivot point of the rear wall about the X-axis (axis parallel to the drum axis). To easily add the rear wall to the center pin, on the one hand, the center pin provided with clear chamfers, the corresponding opening of the hole geometry of the rear wall is designed as a soft passage with larger circumferential radii. For this purpose, the passage at the end of the hole geometry is widened or the degree of intersection formed internally in the rear wall area is made flattened so that scraping over the plastic journal and tilting during the assembly process is avoided. Vertically and horizontally acting loads on the rear wall are guided via the center pin into the floor module and then carried on to the feet in the floor module. Of the formed as a center pin plastic pin lies on a larger smooth sheet metal surface, so that the surface pressure of the plastic pin on the sheet fails auspicious.

According to the invention, it is proposed for this that the rear wall on the floor module in a self-holding defined pre-assembly position can be attached to the frameless structure of the housing, wherein at least one center pin for centering the rear wall, and at least one latching hook for holding the attached rear wall are provided on the floor module, which cooperate with corresponding punched holes on the rear wall in the attached state. In this case, advantageously, the bottom module in the region of the lower rear edge at least one undercut, engages in the attachment of the rear wall at least one arranged on the lower side edge sheet metal edge. Thus, it is clear that the rear wall in the so-called self-holding pre-assembly is initially attached to the undercut, the sheet edge engages in the undercut and forms a hinge point around which the rear wall is pivoted to the vertical, so that the center pin for centering here in the rear wall penetrates, in which case the latching hook engages through the perforation, so that this then prevents the rear wall from tipping over or tilting back.

According to a particularly advantageous embodiment, an insertion bevel is arranged on the latching hook, which is followed by a vertically arranged latching web region, on which in turn a spring bar is formed. This results in a simple execution of the latching hook automatically through the hole punching. In this case, the hole punching in the rear wall in Hintergreifungsbereich for the latching hook is formed rounded in an advantageous manner. This causes in particular a sliding of the latching hook through the hole punching in the rear wall. According to an expedient embodiment, the hole punching is formed on the rear wall for the latching hook above the Hintergreifungsbereichs arched outward. Thus results above the latching hook a kind of roof curvature, which in particular prevents, for example, splash water can penetrate into the interior of the housing.

In a further development, insertion chamfers for the corresponding hole punching in the rear wall are also provided on the center journal. The hole punching in the rear wall as such is formed for the center pin shaped as a ring for surface contact of the center pin. Thus, the center pin is dimensioned in conjunction with the hole punching so that the forces can be passed over the center center pin centered in the bottom module. In this case, the inner degree and the outer degree of the shaped ring of the hole punching is expanded or it is subsequently removed. This prevents, in particular when attaching the rear wall or when removing the rear wall, that it can lead to tilting in the region of the center pin.

The invention equally relates to a method for mounting a rear wall of a housing for household appliances, such as dryers, washing machines, dishwashers or the like, which includes in its basic design a floor module and side walls, a front wall and a rear wall. The method of assembly is such that the rear wall for frameless construction of the housing for a fixed pre-assembly on the floor module in a first step initially arranged with a arranged at the lower rear edge sheet edge in an inclined position in at least one in the lower rear edge edge of the floor module Undercut is set, then in a second step, the rear wall on the floor module is pivoted in its self-holding defined pre-assembly position in the vertical, and wherein the pivoting provided on the rear wall punch holes on a center pin for centering the rear wall and on a latching hook for holding the attached rear wall are brought into operative connection.

Figur 1

eine teilweise geschnittene Darstellung in der Perspektive des Bodenmoduls von seiner Rückseite her;

Figur 2

eine Seitenansicht des Bodenmoduls mit Rückwand in Ansetzposition;

Figur 3

eine teilweise geschnittene perspektivische Darstellung in Rückansicht der Rückwand mit angesetzter Rückwand am Mittelzapfen sowie am Rasthaken;

Figur 4

eine Detailunteransicht der Blechankippungen an der Rückwand, welche in die Aussparung am Bodenmodul im angesetzten Zustand der Rückwand greifen;

Figur 5

eine Detailansicht in geschnittener Seitenansicht des Rashakens in der Lochstanzung der Rückwand gemäß der Figur 6;

Figur 6

eine geschnittene Seitenansicht der Situation von Mittelzapfen und Rasthaken in Zusammenwirkung mit der Rückwand;

Figur 7

eine weitere Detailansicht in geschnittener Seitenansicht der Blechkantenkippung in Wirkverbindung mit der Aussparung an dem Bodenmodul gemäß der Figur 6;

Figur 8

eine Detailansicht ebenfalls in der geschnittenen Seitenansicht des Mittelzapfens im Zusammenwirken mit der Lochstanzung an der Rückwand; und

Figur 9

eine Detailansicht in geschnittener Seitenansicht der Lochstanzung in der Rückwand für den Mittelzapfen gemäß der Figur 8.

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 partially sectioned view in the perspective of the floor module from its back side;

FIG. 2

a side view of the floor module with rear wall in Ansetzposition;

FIG. 3

a partially sectioned perspective view in rear view of the rear wall with attached rear wall on the center pin and the latching hook;

FIG. 4

a detail bottom view of Blechankippungen on the rear wall, which engage in the recess on the bottom module in the attached state of the rear wall;

FIG. 5

a detailed view in a sectional side view of the Rashakens in the hole punching of the rear wall according to the FIG. 6 ;

FIG. 6

a sectional side view of the situation of center pin and latch hooks in cooperation with the rear wall;

FIG. 7

a further detailed view in a sectional side view of the sheet edge tilting in operative connection with the recess on the floor module according to the FIG. 6 ;

FIG. 8

a detail view also in the sectional side view of the center pin in cooperation with the hole punching on the rear wall; and

FIG. 9

a detailed view in a sectional side view of the hole punching in the rear wall for the center pin according to the FIG. 8 ,

The FIG. 1 shows a bottom module 1 in perspective and here in particular from the back side area, which serves for a not-shown housing of a household appliance, such as a tumble dryer, as a basic design. To the floor module 1 are Side walls and a front wall, also not shown in detail, and a rear wall 2, shown in the FIG. 2 , set. Here is the frameless structure of the housing, the rear wall 2 on the floor module 1 in a self-holding defined pre-assembly position, as shown in the Figures 3 . 6 and 8th is shown, attachable. At the bottom module 1 for this purpose at least one center pin 3 for centering the rear wall 2, and at least one latching hook 4 for holding the attached rear wall 2 is provided. The latching hook 4 and the center pin 3 act together with corresponding punched holes 5 and 6 on the rear wall 2 in the attached state together, as in particular in the Figures 3 and 6 is shown.

As in particular from the Figures 2 . 4 and 6 can be seen, the bottom module 1 at the lower rear edge 7 at least one undercut. This is formed as a recess 80 on a rib 8, in which the attachment of the rear wall 2 engages a arranged on the lower side edge 9 plate edge, as in the FIGS. 6 and 7 is shown. The sheet edge is partially formed as Blechankippung 10, wherein advantageously at least one rib 8 with a recess 80 and correspondingly a Blechankippung 10 are available. In the illustrated embodiment, two ribs 8 and correspondingly two Blechankippungen 10 are used.

The latching hook 4 in its functional position is particularly in the FIGS. 5 and 6 shown in more detail, wherein this has an insertion bevel 11, at which a vertically arranged locking portion 12 connects, on which in turn a spring bar 13 is formed. From the FIGS. 5 and 6 It is clear that when the latching hook 4 engages through the hole punching 5, in particular the latching land area 12, the hole punching 5 engages behind here, as this situation in the FIGS. 5 and 6 is shown. Next is from the FIGS. 5 and 6 to recognize that the hole punching 5 is rounded in the rear wall 2 in Hintergreifungsbereich for the latching hook 4, this is clearer in the FIG. 3 and FIG. 5 to recognize. In this case, the hole punching 5 is curved in the rear wall 2 for the latching hook 4 above the Hintergreifungsbereichs outwardly curved, as shown in the FIGS. 5 and 6 can be seen. The overhang 14 in the rear wall area thus causes a roof above the hole area, so that penetration of the hole punching 5 is prevented for splashing. In addition, the catch area is protected by the overhang 14 in order to reduce the risk of injury to the fitter.

The configuration of the center pin 3 is in the Figures 3 . 6 and 8th explained in more detail, wherein on the center pin 3 also insertion bevels 15 are provided for the hole punching 6 in the rear wall 2. The hole punching 6 for the center pin 3 is in this case formed as a ring 15 for the planar contact of the center pin 3 in the rear wall 2 formed. This situation is particular in the FIG. 8 clearly to see where the center pin 3 in the ring opening of the Ring 16 is applied flat, so that above the center pin 3 forces acting on the rear wall of the housing, are passed here in the bottom module 1. As in particular from the FIG. 9 can be clearly seen, the hole punching 6 of the ring 16 has a widened inner degree 17 and a widened outer degree 18, which cause that when inserting the center pin 3 or when removing the center pin 3 from the hole punching 6 there is no jamming or damage the center pin 3 comes at the hole punching 6.

For the method of assembling the rear wall 2 to the floor module 1, first the rear wall 2, as in the FIG. 2 shown, for frameless construction of the housing for a fixed pre-assembly to the floor module 2 in a first step, first with their arranged at the lower rear edge sheet edge tilting 10 in an inclined position, shown in the FIG. 2 , in at least one arranged in the region of the lower rear edge 7 of the bottom module 1 recess 80 attached to a rib 8. Then, in a second step, the rear wall 2 on the floor module 1 in a self-holding defined pre-assembly position in the vertical, according to the arrow, pivoted, wherein during the pivoting then on the rear wall 2, the proposed hole punching 6 of the center pin 3 for centering the rear wall 2, as well the hole punching 5 of the latching hook 4 for holding the attached rear wall 2 are brought into operative connection, so that the situation arises, as shown in the Figures 3 and 6 is shown.

Claims (8)

1. Housing for domestic appliances, for example a tumble dryer, washing machine, dishwasher or the like, comprising a bottom module (1), side walls, a front wall and a rear wall (2), it being possible for the rear wall (2) to be attached to the bottom module (1) in a self-retaining defined pre-mounted position in order to construct the housing without a frame, at least one central journal (3) being provided on the bottom module (1) for centring the rear wall (2) and at least one catch hook (4) being provided for mounting the attached rear wall (2), said central journal and said catch hook both interacting with corresponding punched holes (5) and (6) in the rear wall (2) when in the attached state, characterised in that
   the bottom module (1) comprises at least one undercut in the region of the lower rear side edge (7), in which undercut at least one plate edge, arranged on the lower side edge (9), engages when the rear wall (2) is attached.
2. Housing according to claim 1,
   characterised in that
   an insertion chamfer (11) is arranged on the catch hook (4) and is adjoined by a vertically arranged locking bar region (12), on which a resilient bar (13) is in turn integrally moulded.
3. Housing according to claim 1,
   characterised in that
   the punched hole (5) in the rear wall (2) is rounded in the rear-engagement region for the catch hook (4).
4. Housing according to claim 3,
   characterised in that
   the punched hole (5) in the rear wall (2) for the catch hook (4) is curved outwards above the rear-engagement region.
5. Housing according to claim 1,
   characterised in that
   insertion chamfers (15) for the punched hole (6) in the rear wall (2) are also provided on the central journal (3).
6. Housing according to claim 1,
   characterised in that
   the punched hole (6) for the central journal (3) is in the shape of a ring (16) in order to be flat against the central journal (3).
7. Housing according to claim 6,
   characterised in that
   the internal pitch (17) and the external pitch (18) of the formed ring (16) of the punched hole (6) are enlarged.
8. Method for mounting a rear wall (2) of a housing for domestic appliances, for example a tumble dryer, washing machine, dishwasher or the like, according to any of claims 1 to 7, which housing comprises a bottom module (1), side walls, a front wall and a rear wall (2),
   characterised in that,
   in a first step, in order to construct the housing without a frame and for a fixed pre-mounting on the bottom module (1), the rear wall (2) is first placed, by a plate edge arranged on the lower side edge (9), in an inclined position into at least one undercut arranged in the region of the lower rear side edge (7) of the bottom module (1), the rear wall (2) then, in a second step, being pivoted to the vertical into a self-retaining defined pre-mounting position on the bottom module (1), and, during pivoting, a punched hole (5) and (6) provided in the rear wall (2) being operatively connected to a central pin (3) for centring the rear wall (2) and to a catch hook (4) for holding the attached rear wall (2).

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