DE202010014774U1 - Housing or housing part of an electronic device and electronic device - Google Patents

Abstract

Housing or housing part of an electronic device, preferably a mobile radio device, a television set, an EDP device or an entertainment electronics device, comprising a fabric layer (2) comprising at least one metallized fabric, which is directly back-molded with a plastic carrier (7).

Description

The invention relates to a housing or housing part of an electronic device, preferably a mobile device, a television set, a computer device (computer) or a consumer electronics device with a plastic carrier (plastic injection molding).

Housing or housing parts made of plastic for electronic devices are widely known. Usually, it is colored plastic injection molded parts that dress the electronics, often with the exception of a display opening.

A disadvantage of known housings is their lack of robustness. Further, the optical (aesthetic) appearance and its feel is in need of improvement.

The invention is therefore based on the object to provide an improved housing or housing part for an electronic device, which is characterized by an attractive appearance (aesthetics) and feel as well as by a high durability (robustness). Furthermore, the object is to provide an electronic device with such a housing or housing part.

This object is achieved with respect to the housing or the housing part with the features of claim 1 or 2 and with respect to the electronic device having the features of claim 12. Advantageous developments of the inventions are specified in the subclaims. All combinations of at least two features disclosed in the description, claims and / or figures fall within the scope of the invention.

According to a first alternative, the invention is based on the consideration of providing an attractive appearance and an improved feel by virtue of the fact that a metallized fabric layer is connected directly to the plastic carrier of the housing or housing part by insert molding. In other words, according to the invention, a tissue layer comprising at least one metallized tissue is located directly on the outside of the plastic carrier. Expressed in other words, no further layer, such as an adhesive layer or a lamination layer, etc., is expressly provided between the fabric layer and the plastic carrier. The immediate arrangement of the metallic fabric layer on the plastic support not only a particularly aesthetic impression is achieved and improves the feel, but it results in a very robust overall housing or housing part, which absorb shocks much better or can absorb than designed exclusively as plastic injection molded housing or Housing parts, as the metallized fabric distributes the impact force, thus preventing cracking or flaking of plastic parts.

With regard to a second alternative, the invention is based on the consideration of obtaining particularly good aesthetic properties of the housing in that the tissue metallized on one or both sides is not directly back-injected from the plastic carrier, but that between plastic carrier and tissue, preferably as a plastic film trained laminating film is, wherein it is particularly preferred if the one laminating film is the only layer between the one or both sides metallized fabric and the plastic carrier. Preferably, a plastic film with a thickness of less than 100 μm, preferably less than 50 μm, very particularly preferably less than 30 μm, is used as the laminating film. Ideally, the film in the housing part, at least approximately, non-compressible to avoid deformation of the metallic fabric with external application of force when gripping and any resulting damage to the metallization. It is particularly expedient if the thickness extension (thickness of the laminating film is selected from a value range between about 5 μm and about 25 μm.

With regard to the concrete formation of the metallized fabric, there are two different alternatives. Thus, the fabric can be metallized on both sides, for example by vapor deposition, sputtering, etc. or alternatively, which is preferred, only exclusively on the side facing away from the plastic carrier, since this improves the connection of the plastic carrier formed as a plastic injection molded part and the preferably plastic yarn fabric because the plastic carrier enters into an intimate connection with the yarn of the fabric during injection molding.

In particular for applications in which the electronic device provided with the housing or housing part emits and / or receives radio waves, an embodiment is preferred in which the metallization of the fabric at intersections of warp and weft threads on the warp and / or weft threads has interruptions in particular in such a way that the electromagnetic attenuation of the metallized tissue is (clearly) reduced without interruption compared to metallized tissues, in particular in such a way that radio waves can be transmitted and / or received with an antenna arranged within the housing or the housing part, in particular mobile waves, Radio waves of the WLAN and / or Bluetooth standard. In other words, in the invention, a variety of Interruptions, for example in the form of targeted microcracks, provided in the metallization at crossing points of warp and / or weft threads that the electrical resistance is significantly increased compared to a metallized fabric layer without the aforementioned interruptions to the effect of the metallized fabric as shielding Faradaysche Significantly reduce cage, in particular such that the field strength of radio waves penetrating the metallized layer of tissue is weakened by a maximum of 20%, preferably by a maximum of 10%, compared to an identical shaped part with a layer of tissue without metallization.

It is particularly expedient, on the one hand for reasons of cost and, on the other hand, to realize a durable housing or housing part when the fabric of the fabric layer, which is coated on both sides or on one side, is woven from a plastic yarn, wherein the synthetic yarn is monofilament yarn or multifilament yarn can. An embodiment is also feasible in which monofilament yarn is interwoven with multifilament yarn, each made of plastic. Particularly good optical effects can be achieved if the fabric dyed as a substrate for the metallic coating, preferably dyed black, wherein the dyeing is still more preferably not in the state of the finished fabric, but instead dyed, in particular spinneret dyed yarn for producing the fabric for Use comes. Most preferably, the yarn used is black.

It is particularly useful if the fabric of the fabric layer of polyester yarn is woven.

In a development of the invention, it is advantageously provided that the yarn thickness (diameter) of the mono- and / or multifilaments used is selected from a value range between 60 μm and 400 μm, preferably between approximately 60 μm and approximately 260 μm. Very particular preference is given to using fabrics which are woven with yarn of the yarn thickness 60 μm, 140 μm or 260 μm.

For reasons of strength and for visual and haptic reasons, it has proven to be advantageous to form the fabric of the fabric layer in the twill twill, cross twill, panama, rips or canvas.

Advantageously, it is provided in a development of the invention that the proportion of open tissue surfaces on the total tissue surface of the tissue used is between about 10% and about 70%. Most preferably, the proportion is about 75%.

It is particularly expedient to apply the metal material for coating the fabric on the fabric by vapor deposition or sputtering in vacuum. In particular, during manufacture, the not yet finished housing or housing part characterized by the provision of the fabric layer with a metallized fabric by increased flexibility, which allows a molding in almost any three-dimensional shapes. It is particularly expedient if the metallization of the fabric layer forms the outermost layer of the housing or housing part, that is on the metallization no further layer is applied, it being alternatively conceivable to provide a protective lacquer layer.

With regard to the concrete formation of the one-sided or one-sided metallization of the tissue, there are different possibilities. For example, the metallization may comprise gold and / or copper and / or titanium and / or chromium and / or aluminum and / or tin, or at least one metal of the aforementioned group of metals. It is also possible that the metallization is formed from an alloy comprising at least one of the aforementioned metals or comprises such an alloy. For example, the metallization can simultaneously comprise aluminum and copper, which brings interesting, aesthetic properties.

The invention also leads to an electronic device, in particular an electronic device equipped with transmitting and / or receiving antenna for radio waves, for example a mobile radio device, with a housing and / or a housing part designed according to the concept of the invention.

It is particularly useful if a transmitting and / or receiving antenna is disposed within the housing and / or housing part such that radio waves are received through the metallized tissue layer and / or sent.

It is even further preferred if the housing or housing part forms at least 50%, preferably at least 75%, of the device surface, ie that at least 50%, preferably 75%, of the device surface is formed with one of a metallized tissue, which is fixed by injection molding to a plastic carrier is.

Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawings.

These show in:

1 a top view of a designed as a front panel housing part of a trained as a mobile electronic device,

2 a sectional view along the section line AA according to 1 , and

3 a greatly enlarged plan view of a housing part.

In the figures, the same elements and elements with the same function and with the same reference numerals.

In 1 is designed as a front panel housing part 1 an electronic device, shown in the embodiment shown a mobile device. The housing part comprises a fabric layer 2 , which is shown only partially and enlarged for reasons of clarity, wherein the fabric layer 2 a one- or two-sided metallized tissue 3 ie a tissue 3 with a metallization 4 includes. The tissue 3 is in the illustrated embodiment made of polyester yarn, here monofilament yarn black color woven from weft threads 5 and warp threads 6 consists. In the metallization 4 For example, it can be gold, copper, etc. In the embodiment shown forms the metallization 4 the outermost layer of the housing part 1 , which next to the metallized fabric layer 2 a plastic carrier 7 includes, with which the fabric layer 2 without making any intermediate layer, ie is injected directly behind. Preferably, the metallization is located 4 only on the outside, ie on the plastic carrier 7 opposite side, leaving the plastic carrier 7 an intimate connection with the yarn of the fabric 3 can go down.

3 shows in a fragmentary and greatly enlarged view of a housing part 1 from above. It can be seen that the housing part 1 is dominated by a Gewebeoptik and feel, with a two-sided or one-sided metallization 4 (Metallization layer) on top of the fabric layer 2 is shown.

Out 3 further results that the open fabric area, ie the areas between weft and warp threads 5 . 6 of the tissue 3 from the plastic carrier 7 deposited or alternatively filled out. The of weft and cross threads 5 . 6 limited open spaces are denoted by the reference numeral 8th characterized.

With the reference number 9 are crossing points of weft and warp threads 5 . 6 marked, ie the points (areas) where there are weft and warp threads 5 . 6 cross, that is, one another. At these crossing points 9 Both have at least some of the weft threads 5 and some of the warp threads 6 , more precisely their metallization 4 interruptions 10 in the form of microcracks, which increase the electrical resistance of the overall metallization and ensure that the attenuation effect for radio waves is significantly reduced in comparison to a variant without seeing the interruptions that are only partially drawn. The cracks preferably extend transversely to the respective thread longitudinal extent and extend in the circumferential direction.

Not explicitly shown is an alternative embodiment of the invention, in which the housing next to the plastic carrier and the one or both sides coated fabric layer comprises a laminating film, which is preferably the only layer between the fabric layer 2 and the plastic carrier 7 represents. First, the fabric layer is preferred 2 applied to the thin, in particular non-compressible, preferably a thickness extension from a range between 5 microns and 25 microns having laminating, whereupon the composite of laminating film and fabric layer 2 with plastic for the formation of the plastic carrier 7 is injected behind. The laminating film is after Hinterspritzungsvorgang example in the view in 3 in denoted by the reference numeral 8th marked areas visible. The laminating layer prevents flow through the fabric clearance surfaces with liquid plastic material during the injection molding process.

LIST OF REFERENCE NUMBERS

1

housing part

2

tissue layer

3

tissue

4

metallization

5

wefts

6

warp threads

7

Plastic carrier

8th

areas

9

crossing points

10

interruptions

Claims (13)

Housing or housing part of an electronic device, preferably a mobile radio device, a television set, a computer device or a consumer electronic device, comprising a tissue layer comprising at least one metallized tissue ( 2 ) directly connected to a plastic carrier ( 7 ) is injected behind. Housing or housing part of an electronic device, preferably a mobile device, a computer device or a consumer electronic device comprising at least one fabric layer comprising metallized tissue ( 2 ), which is preferably arranged directly on a laminating film directly with a plastic carrier ( 7 ) is injected behind. Housing or housing part according to one of claims 1 or 2, characterized in that the fabric layer ( 2 ) exclusively on its from the plastic carrier ( 7 ) is metallized away from the side. Housing or housing part according to one of claims 1 to 3, characterized in that the metallization ( 4 ) of the tissue ( 3 ) at crossing points ( 9 ) of chain ( 6 ) and weft threads ( 5 ) at the chain ( 6 ) and / or weft threads ( 5 ) Interruptions ( 10 ) having. Housing or housing part according to one of the preceding claims, characterized in that the metallization ( 4 ) a multitude of interruptions ( 10 ) such that the metallized fabric layer ( 2 ) is permeable to radio waves, in particular in a frequency range between 0.5 GHz and 6 GHz. Housing or housing part according to one of the preceding claims, characterized in that the metallization ( 4 ) a multitude of interruptions ( 10 ) such that the metallized fabric layer ( 2 ) penetrating field strength of radio waves, in particular from a frequency range between 0.5 GHz and 6 GHz, at most by 20%, preferably at most 10% is weakened compared to an identical molded part with a fabric layer ( 2 ) without metallization ( 4 ). Housing or housing part according to one of the preceding claims, characterized in that the at least one, preferably only one, tissue ( 3 ) the tissue layer ( 2 ), preferably spinneret-dyed, plastic monofilament yarn and / or plastic multifilament yarn. Housing or housing part according to claim 7, characterized in that the diameter (yarn count) of the mono- and / or multifilaments is selected from a value range between about 60 microns and about 400 microns, preferably between about 60 microns and 260 microns, and / or about 60 microns, or about 140 microns or about 260 microns. Housing or housing part according to one of the preceding claims, characterized in that the metallization ( 4 ) the tissue layer ( 2 ) forms an outermost layer of the molding. Housing or housing part according to one of the preceding claims, characterized in that the tissue ( 3 ) is woven in the weave twill, cross twill, panama, rips or canvas. Housing or housing part according to one of the preceding claims, characterized in that the proportion of the open tissue surface (free surfaces) on the total tissue surface is between about 10% and about 70%, preferably about 25%. Electronic device, in particular mobile radio device, with a housing or housing part ( 1 ) according to any one of the preceding claims. Apparatus according to claim 12, characterized in that the housing or / at least one housing part ( 1 ) forms at least 50%, preferably at least 75% of the device surface.

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