Display frame for a motor vehicle display

Abstract

The invention relates to a display frame (40) for a display (50) of a motor vehicle, comprising a holding part (42) to which a cover glass (56) can be directly fastened on the front in a display plane and a technical part (48) on the rear, a decorative part (44) extending on the outside around the holding part (42), and a rear covering part (46), wherein the display frame (40) is formed in one piece with the holding part (42), the decorative part (44), and the covering part (46). The invention further relates to a display (50) for a motor vehicle having such a display frame (40).

Description

[0001] The invention relates to a display frame for a display of a motor vehicle according to the preamble of patent claim I. Furthermore, the invention relates to a display for a motor vehicle with such a display frame.

[0002] A display frame for a motor vehicle display is known from automotive engineering, comprising a holding part to which a cover glass can be directly attached at the front in a display plane and a technical part at the rear, a decorative part running around the outside of the holding part, and a rear trim part. Such a display frame is, for example, part of a display arranged on a center console of a motor vehicle. The technical part can, for example, comprise a display film on which a graphic output of, for example, navigation information is shown under the control of a control unit. In the case of a touchscreen display, the technical part can further comprise an operating device which, for example, comprises a capacitive film. A housing part can be arranged behind the technical part, by means of which the display is connected to the center console of the motor vehicle.

[0003] JP 2012 - 209 701 A relates to a television set, in particular a television set with a screen part and a housing. DE 20 2006 013 891 U1 describes an electronic image display device and a cover device for an electronic image display device. DE 103 37 925 A1 relates to the structural design of a display device.

[0004] The object of the present invention is to provide a display frame and a display for a motor vehicle which can be produced particularly cost-effectively.

[0005] This object is achieved according to the invention by a display frame having the features of patent claim 1 and a display having the features of patent claim 7. Advantageous embodiments and further developments of the invention are specified in the remaining patent claims.

[0006] In order to create a display frame for a motor vehicle display that can be manufactured particularly cost-effectively, the invention provides for the display frame to be formed integrally with the holding part, the trim part, and the covering part. This allows the display frame to be manufactured particularly cost-effectively in a single process step. In particular, the display frame can be manufactured using only a single tool, which also makes it particularly cost-effective to manufacture.

[0007] Directly attachable means, for example, that the technical part and / or the cover glass is held to the holding part by means of a clip or adhesive connection. A one-piece display frame can also be referred to as a one-box design.

[0008] In addition, the one-piece display frame can be particularly thin. Thin refers to the thickness of the display frame perpendicular to a display plane. A particularly thin display frame enables a particularly thin display, which has a particularly high-quality and delicate appearance. If the display frame is formed by the holding part, the decorative part and the covering part as separate parts, these parts must adhere to a certain minimum thickness. Otherwise, the parts cannot be manufactured and / or are particularly difficult to assemble and / or at least particularly expensive to manufacture. In addition, certain tolerances must be provided for each of the parts, which means that the non-one-piece display frame is also particularly thick. With the one-piece display frame, the minimum thickness of the display frame is therefore only limited to the extent that it is limited by a single part of the display frame in the known display frame.

[0009] Typically, the cover part only extends over the area that doesn't overlap with the technical part. This means that the technical part can be covered on its back with another housing part. This housing part can also be attached to the display frame.

[0010] The cover glass is typically only attached to the support part in certain areas. In the area where the technical part, at least with its display film, is located, the display frame has a through-opening. In the area of ​​the through-opening, the cover glass is not attached to the support part, for example, but rests on the display film of the technical part. The attached cover glass can also cause the graphic output displayed on the display film of the technical part to be clearly visible only through the cover glass.

[0011] In a particularly advantageous embodiment of the invention, the display frame is made of a cast material. Such a cast material can be, for example, die-cast aluminum, which is particularly durable. A display frame made of die-cast aluminum can therefore be particularly robust. Furthermore, die-cast aluminum has a particularly high-quality feel. A one-piece display frame, in particular, can be manufactured particularly cost-effectively using a casting process. It is particularly cost-effective if only a single tool is required, since casting tools are particularly cost-intensive tools.

[0012] It is also advantageous if the display frame is made of a fiber-reinforced plastic, particularly at least in some areas. Plastic is particularly inexpensive and lightweight. Accordingly, a display frame can be manufactured particularly cost-effectively using a plastic casting process. The fiber reinforcement makes the display frame particularly dimensionally stable and robust. The fiber reinforcement can be specifically positioned in areas subject to the highest mechanical stress. One such area could be the cover glass attachment area, for example. This allows for the creation of a display frame that is particularly resilient to the load.

[0013] In a further advantageous embodiment of the display frame, the holding part has a flat fastening area in a display plane, to which the cover glass can be fastened. The fastening area is the partial area to which the cover glass is attached. A flat fastening area allows the cover glass to adhere particularly well to the display frame evenly and, in particular, airtight and / or without air inclusions. This is particularly advantageous when only the display frame above the display film ensures a sharp representation of the graphic output of the display.

[0014] Overall, the cover glass is particularly easy to attach to the display frame. Furthermore, no specially designed attachment areas with special geometries, such as an edge or a step, need be provided in or on the cover glass. The cover glass can therefore be flat at least on the side facing the display frame. Such a cover glass is particularly cost-effective to produce. Furthermore, with a non-flat attachment area it is particularly complex and difficult to ensure that the cover glass fits completely evenly against the display frame. If the cover glass fits unevenly, the graphic output on the display can be of reduced quality. This is particularly the case if the cover glass has different distances to the display film over its extent.

[0015] In a further advantageous embodiment of the invention, it is provided that the flat fastening area of ​​the holding part does not exceed a thickness of 4 mm, in particular 3.5 mm, 3 mm, 2.5 mm, 2 mm, 1.5 mm, 1 mm, 0.5 mm. The thickness is related to the display plane. Otherwise, especially with a thicker display frame, so-called sink marks can occur in the area of ​​the flat fastening. Sink marks are unwanted elevations in the fastening area, in particular on the side facing the cover glass. Sink marks can occur in particular in a part manufactured using an injection molding process. Sink marks can lead to an unevenly fitting cover glass and thus to reduced image quality. Sink marks can also occur in particular if other parts of the display frame are integrally connected in the area of ​​the fastening area.For example, T-shaped support edges, which significantly increase the thickness of the display frame relative to the display plane in the mounting area, can cause a sink mark. Such support edges should therefore be avoided in the mounting area.

[0016] It is particularly advantageous if the thickness of the flat fastening area across its extension in the display plane does not change by more than 50%, in particular by no more than 45%, 40%, 35%, 30%, 25%, 20%, 15%, 10%, or 5%. Such a design can also advantageously prevent the formation of sink marks in the fastening area of ​​the display frame.

[0017] To create a display for a motor vehicle that can be manufactured particularly cost-effectively, the invention provides that the display comprises a display frame as described above, with the cover glass being directly attached to the holding part of the display frame on the front side and the technical part being directly attached to the rear side. Advantageous embodiments of the display frame represent advantageous embodiments of the display, and vice versa.

[0018] In a further advantageous embodiment of the display, the cover glass is glued to the front of the holding part, in particular to the flat fastening area of ​​the holding part. The adhesive is preferably transparent. The cover glass can thus be bonded to the holding part. The bonding should, in particular, be airtight, without inclusions of, for example, air and / or liquids. By means of bonding, the cover glass can be attached to the holding part particularly cost-effectively and / or precisely.

[0019] Further advantages, features, and details of the invention will become apparent from the following description of a preferred embodiment and from the drawings. The features and combinations of features mentioned above in the description, as well as the features and combinations of features mentioned below in the description of the figures and / or shown alone in the figures, can be used not only in the respective combinations specified, but also in other combinations or on their own, without departing from the scope of the invention.

[0020] These show in: Fig. 1 shows a schematic perspective view of a display for a motor vehicle according to the prior art; Fig. 2 shows a schematic perspective view of a display frame for a display according to the prior art; Fig. 3 shows a schematic perspective view of a display frame according to the invention for a display of a motor vehicle; Fig. 4 in a schematic exploded view a display with the display frame according to the invention according to Fig. 3; and Fig. 5 shows a partial sectional view of a comparison between the display frame according to the invention according to Fig. 3 and the already known display frame according to Fig. 2.

[0021] Fig. Figure 1 shows a schematic perspective view of a display 10 mounted on a dashboard 12 of a motor vehicle. This is a previously known display 10. The display 10 can, for example, display navigation information on its display surface for the occupants of the motor vehicle. Furthermore, if the display 10 is equipped with a touchscreen, for example, it can also be used as an operating unit, for example for a navigation system of the motor vehicle. A technical part 16 - as shown in Fig. 2 - includes all necessary control and operating devices and a display foil by means of which the graphic representation of the display 10 can be generated behind a cover glass 14 of the display 10. The rear side generally refers to the side facing away from the display surface and facing the dashboard 12. Accordingly, the front side is the side with which the display 10, in the installed position, faces the occupant of the motor vehicle. The front side is therefore also the side on which the cover glass 14 is arranged.

[0022] The already known display 10 comprises a holding part, to which a cover glass 14 is directly attached on the front side in a display plane and the technical part 16 is directly attached on the back. A decorative part 18 runs around the outside of the holding part and a covering part 20 is arranged on the back of the holding part. The holding part, the technical part 16, the decorative part 18 and the covering part 20 are designed as separate parts that are connected to one another to form a display frame 24. The holding part of the already known display frame 24 is in Fig. I and Fig. 2 is completely concealed and thus not visible. A further housing part 22 is also arranged on the rear of the display 10, by means of which the display 10 is held to the dashboard 12 of the motor vehicle.

[0023] The previously known display frame 24 thus comprises the retaining part (not shown), the decorative part 18, and the covering part 20. All of these parts are manufactured as separate parts and connected to one another to assemble the display frame 24. Such a display frame 24 is particularly expensive. Furthermore, tolerances must be provided for the connection of the individual parts, which makes the previously known display frame 24 particularly thick along its display plane. This thickness cannot be reduced arbitrarily, since each of the parts must have a minimum thickness for manufacturing reasons.

[0024] In Fig. Figure 3 shows a schematic perspective view of the display frame 40 according to the invention from a rear view. The display frame 40 according to the invention also comprises a holding part 42, a decorative part 44, and a rear covering part 46. However, these parts are designed as a single piece in the display frame 40 according to the invention. For example, the display frame 40 is manufactured using a die-casting process. A possible material is, for example, die-cast aluminum, which is particularly robust and has a particularly high-quality feel. Alternatively, plastic can be used as the material, whereby the display frame 40 can be particularly cost-effective and lightweight. The plastic can be reinforced with fibers in the area of ​​high mechanical stress, thereby enabling a particularly cost-effective and / or particularly load-adapted design of the display frame 40.In the display frame 40 according to the invention, a technical part 48 identical to the technical part 16 can be directly attached to the back of the holding part 42. Thus, parts of the already known display 10 can be reused without the need for further structural adaptation. A cover glass 56—shown in . Fig. 4 _can be designed in the same way as the cover glass 14 and can be attached directly to the front of the holding part 42 in the display frame 40 according to the invention.

[0025] Fig. Figure 4 shows a schematic exploded view of an alternative embodiment of the display frame 40 according to the invention, from which the display 50 according to the invention is formed. In this alternative embodiment, two of the technical parts 48 are attached directly to the rear of the support part 42 of the display frame 40. This thus represents a display 50 with a dual screen.

[0026] Arranged on the rear side of the technical components 48 and the display frame 40 is a further housing part 52, which is designed as a housing cover. This housing part 52 is also attached to the display frame 40 and protects and / or fixes the technical components 48. Arranged on the rear of the housing part 52 are fastening parts 54, by means of which the display 50 can be fastened to a motor vehicle, for example to the dashboard 12 of a motor vehicle. The housing part 52 can be made of aluminum, plastic, or glass-fiber-reinforced plastic, for example. The same materials can be used for the fastening parts 54. Arranged on the front side of the display frame 40 is the cover glass 56, which can also be directly connected to the holding part 42 on the front side thereof.

[0027] The cover glass 56 has no special edges or shoulders by means of which it is fixed to the holding part 42. The cover glass 56 is fixed in a flat fastening area 58 - shown in the sectional view in Fig. 5 - of the holding part 42 of the display frame 40. Such a fastening can be effected, for example, by means of transparent adhesive. This enables a particularly thin and cost-effective connection of the cover glass 56 to the display frame 40. Such a display frame 40 is also referred to as a bonding frame. The flat fastening area 58 is particularly well shown in the schematic sectional view of the display frame 40 and the already known display frame 24 in Fig. 5, which both in Fig. 5 are superimposed for comparison.

[0028] In Fig. 5 also clearly shows the particular advantages of the display frame 40 according to the invention in its thickness with respect to the display plane compared to the already known display frame 24. The already known display frame 24 has, for example, a thickness of 10 to 15 mm at its outer edge, which is marked by the arrow 60. The display frame 40 according to the invention has, for example, only a thickness of 3 to 4 mm at a similar point on its outer edge, which has been indicated by arrow 62. The particularly great thickness of the already known display frame 24 is due in particular to its double material thickness due to the non-single-piece design. By means of the display frame 40 according to the invention, a significantly thinner display 40 can be created, whereby this has a particularly high-quality appearance. The optical thickness of the already known display 10 as perceived by a passenger of the motor vehicle is in Fig. 1, for example, marked by arrow 64. The thickness of the already known display frame 24 is in Fig. 2 by arrow 66. The thickness of the display frame 40 according to the invention is Fig. 3 marked with arrow 68 The display 40 therefore requires very little installation space in the interior of the vehicle.

[0029] The prerequisite for this is that the flat fastening area 58 is also as flat as possible and, in particular, has no so-called sink marks. Sink marks are unwanted thickenings of the surface, which can occur particularly during a casting production process when the material thickness is subject to significant fluctuations. For this reason, the wall thicknesses of the display frame 40 according to the invention in the fastening area 58 are limited to values ​​between 1.5 and 3 mm.

[0030] This requires a one-piece design of the display frame 40. For example, the separately designed decorative part 18 of the already known display frame 24 would otherwise have to have a maximum wall thickness of less than 1 t5 mm, in particular less than 1 mm. This is not possible for manufacturing reasons, particularly in a casting process, or at least involves particularly high manufacturing costs and particularly complex assembly.

[0031] Because the display frame 40 is constructed in one piece, it can be manufactured using a single tool in a casting process. This keeps manufacturing costs particularly low. Overall, a visually delicate display 50 can be created, which is also particularly cost-effective to manufacture. Using plastic as the material eliminates the need for additional cooling of the display 50, which may otherwise be necessary, particularly with aluminum parts. An aluminum part can become very hot, particularly due to sunlight, and may burn a user's fingers. For a particularly high-quality and robust display 50, the plastic can be glass-fiber reinforced and / or additionally coated.A special embossing of the visible and / or tactile surfaces is also possible. The display 50 has a very slim edge, has a one-piece cover glass 56 and a constant frame thickness of, for example, 2 mm. List of reference symbols 10 combination display 12 Dashboard 14 Cover glass 16 Technical part 18 trim part 20 fairing part 22 Housing part 24 display frames 40 display frames 42 Holding part 44 trim part 46 fairing part 48 Technical section 50 combo display 52 Housing part 54 Fastening part 56 Cover glass 58 Mounting area 60 Arrow 62 Arrow 64 Arrow 66 Arrow 68 Arrow

Claims

[1] Display frame (40) for a display (50) of a motor vehicle, with a holding part (42) to which a cover glass (56) and a technical part (48) can be directly fastened at the front in a display plane, a decorative part (44) extending around the outside of the holding part (42) and a rear covering part (46), characterized by that the display frame (40) is formed in one piece with the holding part (42), the decorative part (44) and the covering part (46). [2] Display frame (40) according to claim 1, characterized by that the display frame (40) is made of a cast material. [3] Display frame (40) according to claim 2, characterized by that the display frame (40) is formed from a plastic, in particular fiber-reinforced at least in partial areas. [4] Display frame (40) according to one of the preceding claims, characterized bythat the holding part (42) has a flat fastening area (58) in a display plane, to which the cover glass (56) can be fastened. [5] Display frame (40) according to claim 4, characterized by that the flat fastening area (58) of the holding part (42) does not exceed a thickness of 4 mm, in particular 3 mm. [6] Display frame (40) according to one of claims 4 or 5, characterized by that the planar fastening area (58) changes in its thickness over its extension in the display plane by no more than 50%, in particular by no more than 30%. [7] Display (50) for a motor vehicle with a display frame (40) according to one of the preceding claims, wherein the cover glass (56) is directly fastened to the front of the holding part (42) of the display frame (40) and the technical part (48) is directly fastened to the rear. [8] Display (50) according to claim 7, characterized bythat the cover glass (56) is glued to the front of the holding part (42), in particular to the flat fastening area (58) of the holding part (42).

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