EP1024329A2 - Display module for Household appliance - Google Patents

Abstract

The display module (50) has a display device mounted behind an at least partially transparent front panel so as to be essentially parallel to it. The display module is pressed against the rear of the front panel by an elastic positioning arrangement (80) and is secured in a module housing by at least one attachment arrangement. is also included for a display and control module with a module housing.

Description

The present invention relates to a display module for household appliances, in particular Herd, with an operating device behind an at least partially transparent front plate is arranged substantially parallel to this and includes the display elements.

Such a display module is known for example from DE 39 09 562 C2. In order to use as few model-specific parts as possible, the A stove cover two horizontally extending profit rails attached, in each of which an operating or display module is slidably arranged is. The module can be, for example, a switch, a temperature display or be a timer. There is a circuit board on its back with the control electronics of the module. A cover glass extends in front of the cover, that extends across the entire width of the stove. Usually located another board with the control electronics in a common Housing with the display board, and the two rigidly held boards are with firmly soldered leads connected together. To production-related To compensate for tolerances, such a module carrying an advertisement must a certain distance behind the front panel. This will however, the viewing angle is impaired, and such installation can be troublesome Parallax errors lead and the display can possibly under very unfavorable steep view can no longer be read easily.

It has become increasingly common to have switch covers for Household appliances inclined from the vertical to arrange a desk shape to make them legible to improve. To simplify the assembly of the control and display device for household appliances it is provided according to DE 41 24 922 C2, that the switch panel on the inside of the conductor tracks and the electrical Carries switching devices, wherein the electrical switching devices through automated fine soldering technology are connected to the conductor tracks and to the Contacting conductors leading for example through an insulating plate are.

The invention has for its object a display module for household appliances to create that is suitable for any inclined front panels, as well as good Has reading properties.

This object is according to the invention in a display module with the features of claim 1 or 7 solved. Advantageous further developments of the invention Display module are the subject of the subclaims.

An inventive display module according to the preamble of the claim 1 is characterized in that the display module has a mounting arrangement has, on which at least the display is mounted, and that the Bracket arrangement around a substantially parallel to the front panel horizontal axis is pivotally arranged, and / or that the display module from an elastic positioning means to the back of the Front panel is pressed.

Due to the rotatable mounting around an essentially horizontal longitudinal axis the display module results in an adjustable alignment with respect to the inclination the display from the vertical. This allows manufacturing and Assembly tolerances in the module depth can be almost completely compensated. It can thus be seen in a slightly rearward arrangement of the display or the entire module. Rather, the ad can be direct Sit in the front of the module so that there is an air gap between the display and the control panel is minimized. The viewing angle is optimized and parallax errors are reduced. In this way, the display module according to the invention can be very precisely related be positioned on the windows of the front panel. This is especially true when, alternatively or in addition to the features of claim 1 the features of claim 7 are used.

Due to the pivotability of the display module, it is also possible to have different Provide an angle between the operating level and the display level. While the controls and electronics, for example, in the usual horizontal Arranged and assembled in this way, the display module, i.e. its display, be aligned in the desired angular position, according to the requirements good readability or design.

A frame mounted on a journal is useful as a mounting arrangement provided, the bearing pins preferably being molded onto the frame itself are.

In a preferred embodiment, the frame is a lighting frame trained and carries the display board and the display elements with the Display. The display elements can be LEDs and the display is a liquid crystal display. Of course there are others too Executions possible.

The display module can preferably be pivoted on a display holder stored, the display holder in a module housing towards Front plate arranged biased by a spring and by at least a locking hook that limits movement in the direction mentioned in Module housing is secured. The spring element and at least act a snap hook together. In this way, on the one hand, a The display holder falls out of the module housing after assembly prevented. On the other hand, due to the spring force, the display holder is also firmly seated in Snap engagement with the module housing. A structurally simple flexible bracket of the Display holder or the display module results if he at least one Has spring element, which is supported on a wall of the module housing. If the display module is pressurized from the front, it can result from the elastic bracket through its display holder towards the rear wall give in. In this way, tolerances in the component depth can be compensated. Cheap is an embodiment of the display holder such that the at least one Spring element and the locking hook are integrally formed on the display holder. Is preferred a one-piece design.

A simple sliding arrangement of the display holder results when this extends in the direction of the rear wall of the module housing Housing recess is slidably disposed, the rear Boundary wall of the recess forms an inner stop. This then limits longitudinal movement of the display holder in the module housing. For To facilitate displacement, the display holder can be a sliding guide exhibit.

In an advantageous embodiment of the display module, the Display holder several differently spaced towards the front panel Holes for the trunnions. This way you can start by Choice of the mounting hole, rough positioning of the display module or the frame of which is to be installed relative to the front panel, the remaining tolerance compensation by those acting on the display holder Spring forces together with, for example, the pivoting movement of the Posture arrangement is possible, with which there is a fine adjustment during installation. As mentioned, the air gap between the display and control panel can then be minimized, and together with the pivoting of the display the display module can also have a longitudinal axis on deformed front panels be adjusted.

Fig. 1

eine schematische Seitenansicht eines in einem Modulgehäuse gehaltenen Anzeigemoduls,

Fig. 2

eine vergrößerte perspektivische Teilansicht des Modulgehäuses von vorne, die die Einbauposition des Anzeigehalters des Anzeigemoduls zeigt,

Fig. 3

eine perspektivische Teilvorderansicht des Anzeigenmoduls, auf das ein Anzeigehalter aufgesteckt ist,

Fig. 4

eine vergrößerte Darstellung des Anzeigehalters entsprechend der Ansicht von Fig. 2 und

Fig. 5

eine teilweise Draufsicht des Anzeigemoduls.

The invention is further described below with the aid of an exemplary embodiment and the drawing, the following illustration being merely exemplary and the invention not being restricted to the features specifically described. The drawing shows:

Fig. 1

2 shows a schematic side view of a display module held in a module housing,

Fig. 2

2 shows an enlarged perspective partial view of the module housing from the front, which shows the installation position of the display holder of the display module,

Fig. 3

2 shows a perspective partial front view of the display module on which a display holder is attached,

Fig. 4

an enlarged view of the display holder according to the view of Fig. 2 and

Fig. 5

a partial plan view of the display module.

First, the basic structure of the display module according to the invention is based on of Fig. 1 explained. This figure shows a schematic side view of the Module housing 2, in which the operating and display device, the latter movable, are accommodated. The design of the module housing 2 is only an example without limitation of the claimed technical teaching. To assemble the Module housing are 4 through openings on its upper front flange 6 provided. There are molded threaded sleeves on the back 8 and assembly hook 10 for fastening further, not shown Components. There are also supply connections, not shown, on the rear wall, If necessary, ventilation openings and through openings for electric lines. There are molded on the back wall Sleeve approaches 12, one of which is shown as an example and for holding and as a feedthrough for the axle shafts of actuation axles 14, one of which is also shown, of not shown Controls serve. Adjacent to the back wall is in the Housing cover an elongated recess 13 through which the upper edge region one housed near the rear wall of the module housing 2 supported control board 30 protrudes outwards. Under the control board 30 is schematically the routing of lines 32 through the rear wall to the outside illustrated. A broken away area 16 in the housing wall illustrates that the actuation axis 14, which is shown here as an example, is carried out by the control board 30 and only up to the in Fig. 1 schematically shown knob 40 as an example of an operating unit extends. The control unit 40 or its housing area is fixed to the module housing 2 assigned, which is also related to the positioning relationship the control board 30 results.

In the upper area of the module housing 2 there is a display module 50 which a pivotable about an axis of rotation 52 indicated schematically in FIG. 1 mounted lighting frame 54, a display holder 56 and a display board 58 and display elements, not shown, includes. This is shown schematically in Fig. 1, further shown the flexible electrical leads 60 that connect the display board 58 Connect to the control board 30. At the front in the illuminated frame 54 or directly below it are mounting openings 62 for the display board 58 and the bracket provided. A display 64 sits on the front of the lighting frame 54 (Display), which is a liquid crystal display, for example.

Furthermore, in the view of FIG. 1, areas 18 have been broken away by means of rear wall area of the display module 50 only schematically locking hook or their hook attachments 84 for anchoring the display holder 56 or of the display module 50 can be seen in the module housing 2.

The structure of the display module 50 also results from the view of FIG. 3, the display holder 56 is further illustrated in FIGS. 2 and 4.

In Fig. 3 is one of the illuminating frame forming the axis of rotation of the display module 54 molded bearing pin 52 shown. It is advantageous Bearing pin 52 is provided movably in its longitudinal axis, whereby a Locking of the illumination frame 54 is possible and also tolerances can be compensated. This movable bracket can for example by forming an elastic tab part 66 at a distance from the outer wall of the illumination frame can be provided, as illustrated schematically in FIG. 5 is.

The is already used for pivoting and mounting the display module mentioned display holder 56. This is in Fig. 4 in a perspective view in Individual shown, its mounting position to that of Figures 2 and 3 can be seen. The display holder 56 comprises a base plate 68 which in embodiment shown has two receiving holes 70. The receiving holes 70 are provided for the journal 52, as in FIG. 3 emerges. By choosing the corresponding receiving hole 70, the Position of the illuminated frame 54 more or less to the front plate or - aperture 99 are displaced (Figure 1). The base plate 68 has on its top and Lower edge in the rear area each have a recess 72, each according to the shape of the module housing 2, an anchoring option possibly there provided projections and the like. Points on the inside the base plate 68 has an upper and a lower guide web 74 (FIG. 4) on, which are tapered outwards for assembly purposes, on the outer edges the display holder 56 is guided in the module housing 2. In particular, the Guide web 74 lies with its upper side 76 on the lower edge of a wall area 22 of the module housing 2 with a smaller wall thickness, the one Housing recess 20 limited. The base plate lies with the outside area 68 on the outside of the wall area 22. On the inside of the base plate 68 of the Display holder 56 are locking hooks at the top and bottom in the rear area 78 and spring elements 80 formed. The locking hooks extend from an extension 82 in the horizontal direction to the rear and at the end hook lugs 84 to the outside. With these hook approaches 84 Display holder 56 anchored in module housing 2, expediently by latching engagement, as shown very schematically in Fig. 1. In this way, the Display holder 56 and thus the display module 50 securely in the module housing 2 be attached. The length of the locking hook 78 results in a more flexible Lever arm, the flexibility of which simplifies assembly. From the outside edge of the Latching hook 78 extends the already mentioned spring element 80, which for Achieving increased elasticity is slightly S-shaped and curved on the outside End of the locking hook 78 is bent upwards or downwards. With this End piece 86, the spring element is elastic on a wall part 24 of the Module housing 2 supported, as Fig. 2 illustrates. By the spring force of the spring element 80, the display holder 56 is turned outward to the inside of the front cover 99 (FIG. 1) fixed to the housing, the hook extension 84 forms the opposite acting stop and the display holder in his Secures mounting position in the housing.

The display holder 56 of the exemplary embodiment shown has two latching hooks 78 and two spring elements 80, which are arranged symmetrically. As well the guide rails 74 are arranged symmetrically and the symmetrical The structure of the display holder enables it to be mounted on both sides of the module housing 2. The spring elements 80 act with the locking hooks 78 together, as explained above.

The assembly of the display module according to the invention is very simple. The Attachment of the control module 40 with the control board 30 and the others Connections can be made in the usual way. For the assembly of the The display module 50 is first the display holder 56 in the recess 72 introduced and pressed inward against the force of the spring elements 80 until the Hook attachment of the locking hook 78 snaps into a rear edge area. Then the illuminating frame 54 or its journal 52 becomes corresponding the required depth position inserted into the associated receiving hole 70. This is easy due to the elastic design of the tab part 66. Then the module housing 2 is completely assembled in the household appliance used. Due to the elastic mounting of the display module 50, this can practically pressed against the front plate 99 (Figure 1), being against the Gives force of the spring elements and around the bearing pin 52 to flush system pivoted to the front panel. So that’s it Display 64 exactly in the desired orientation, i.e. in line of sight according to the inclination of the front panel. Parallax errors are minimized and Manufacturing tolerances can be almost completely compensated for. Is too it is also possible to swivel the entire display module to adapt to deformed front panels. As the illustration of FIG. 1 shows, the operating level (cf. operating module 40) and the display level (see. Illumination frame 54) can be provided at different angles.

Claims (11)

Display module (50) for household appliances, in particular stoves, with a display device which is arranged behind an at least partially transparent front plate essentially parallel to the latter, characterized in that the display module (50) is connected to the rear of the front plate by an elastic positioning means (80) (99) is pressed. Display module according to claim 1, characterized in that the display module (50) is secured in at least one fastening means (78) in a module housing (2). Display module according to Claim 1 or 2, characterized in that the display module (50) is mounted on a display holder (56) which is arranged spring-loaded in a module housing (2) in the direction of the front plate (99). Display module according to Claim 3, characterized in that the display holder (56) has at least one spring element (80) which is supported on a wall of the module housing (2). Display module according to claim 3 or 4, characterized in that the at least one spring element (80) and / or the fastening means (78) are integrally formed on the display holder (56). Display module according to one of Claims 3 to 5, characterized in that the display holder (56) has a plurality of receiving holes (70) for bearing journals (52) spaced apart in the direction of the front plate (99). Display module for household appliances, in particular stoves, with a display device which is arranged behind an at least partially transparent front plate essentially parallel to the latter, in particular according to one of claims 1 to 6, characterized in that the display module has a mounting arrangement (54) on which at least the display (64) is mounted, and that the mounting arrangement (54) is arranged to be pivotable about a horizontal axis running essentially parallel to the front plate (99). Display module according to Claim 7, characterized in that a frame (54) is provided as the mounting arrangement and is pivotably mounted by means of bearing pins (52). Display module according to claim 8, characterized in that the bearing pins (52) are integrally formed on the frame (54). Display module according to Claim 8 or 9, characterized in that the frame is designed as a lighting frame (54) and carries at least the display board (58) and the display (64). Display and operating module with a module housing (2), characterized in that an operating module (40) with an operating board (30) is installed in the module housing (2), that a display module (56) according to one of claims 1 to 10 is installed , and that the display board (58) is connected via flexible lines (60) to the control board (30).

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