EP1905121B1 - Carrier for holding an antenna amplifier of a vehicle - Google Patents

Description

Technical area

The invention relates to a carrier for receiving an electronic device, according to the features of the preamble of patent claim 1.

State of the art

From the EP 1 080 513 B1 An antenna amplifier for a vehicle for receiving high-frequency signals is known. This antenna amplifier consists of a printed circuit board with electronic components and connectors arranged thereon and the like for realizing the function of the antenna amplifier. The circuit board of the antenna amplifier is mounted on a support (plastic frame,) on the disc of the vehicle. On or in the vehicle window are electrically conductive structures that serve as antennas for receiving the high-frequency signals. These high-frequency signals are provided at the end of the antenna structures at contact surfaces. These contact surfaces correspond to the associated inputs of the antenna amplifier, wherein in the known from the European patent embodiment, which is also implemented in practice, protrude from the bottom of the circuit boards spring arms, which are then contacted with the contact surfaces on the vehicle window, when the circuit board is inserted into the plastic carrier after the plastic carrier has been glued to the vehicle window at its installation position. Thus, a so-called "on-glass antenna amplifier" is available, which meets the requirements of assembly and function in the operation of the vehicle as far as possible.

However, in the practical embodiment, it has been found that there are always problems with the manufacture, storage, installation, transportation and operation of this on-glass antenna amplifier system. Thus, the circuit board of the antenna amplifier must be inserted into a circumferential groove in an edge region of the plastic carrier, which makes problems during assembly. The plastic carrier is merely designed as a frame, so that it does not provide the necessary strength for the circuit board, since this is subjected to high loads during operation of the vehicle due to vibrations, temperature fluctuations and the like. A particularly disadvantageous problem is the fact that the contact elements which connect the signal input of the antenna amplifier with the associated contact surface on the vehicle window, as formed by the underside of the circuit board spring arms are formed. These spring arms have in the practical embodiment executed in a complex geometry to realize the required spring and resulting contact forces. Such spring arms are not only extremely complicated to produce on the one hand, but also have the disadvantage that they are soldered to the underside of the circuit board and with its free end, although angled, but still free. As a result, there is the danger that after the production of the printed circuit board with the spring arms they can be bent during further handling or even break, so that a complex replacement is required because the contact elements are soldered. Since the electronic components are arranged on the upper side of the printed circuit board and the contact elements on the underside of the printed circuit board, a repeated passage of the printed circuit board by a soldering device is required, which makes the production of the antenna amplifier more complex. In the event that the lever-like contact element has only been bent but not broken off, it could be thought to bend it back to its original position. However, this is not always possible in the way that the initial geometry of the contact element was, so that the required spring and the resulting contact forces are not maintained correctly.

The US 6,087,996 discloses a carrier for receiving an antenna amplifier of a vehicle, wherein the antenna amplifier has a printed circuit board and on the support made of an electrically non-conductive material carrier to a vehicle window is fastened. The carrier has a planar design and has at least one recess for receiving a contact element for the purpose of electrical contacting of a contact surface of the printed circuit board with a corresponding contact surface of the vehicle window. Here, the carrier by means of a Velcro system, which has a plurality of arbitrarily cooperating spring means and locking means, fixed in position relative to the circuit board and positioned.

The DE 198 23 202 A1 discloses a support for receiving an electronic device having at least one printed circuit board, wherein the electronic device is mounted on a vehicle window via the carrier made of an electrically non-conductive material. The carrier has a planar design and has latching means and cooperating spring means for fixing the printed circuit board to the carrier and at least one exception for receiving an electrical contact.

Presentation of the invention

The invention is therefore an object of the invention to provide a support for receiving an electronic device, in particular an antenna amplifier of a vehicle, with which the above-described disadvantages are avoided.

This object is solved by the features of patent claim 1.

Proceeding from the fact that the carrier has a planar design and has latching means and cooperating spring means for securing the printed circuit board to the carrier and at least one recess for receiving a contact element for making electrical contact with a contact surface of the printed circuit board with a corresponding contact surface of the vehicle component, in particular a vehicle window, It is inventively provided that the locking means are formed out of the surface of the carrier outstanding locking hooks with thrust bearings and the spring means as outstanding from the surface of the carrier spring tabs, wherein the locking means are spatially separated from the spring means. Due to the planar design of the carrier (carrier plate), the necessary strength and stability of the carrier and the printed circuit board to be accommodated therein are improved, since the carrier can be fastened over a large area to the vehicle component, above all to be glued on. The latching means and the cooperating spring means have the advantage that the circuit board is quickly and easily fixed in a predetermined position with respect to the carrier at this. The locking means cause the printed circuit board is held at a maximum distance to the carrier, while by means of the cooperating spring means, the minimum distance is adjustable. Overall, therefore, causes the interaction of locking means and spring means that the circuit board at a predetermined distance to the surface of the carrier arranged ("floats"), and is freed because of the spring means of vibration during operation of the vehicle. In addition, a clearance compensation is possible on the spring means, which is to compensate for temperature fluctuations or tolerances of advantage.

Another particularly important aspect of the invention is the at least one recess (usually several recesses) for receiving a contact element for the purpose of electrical contacting of a contact surface of the Printed circuit board with a corresponding contact surface on the vehicle component. Thus, a suitably designed contact element can be fixed to the carrier, so that a brazing of a complicated designed contact element on the underside of the circuit board can be omitted. This eliminates the risk that a soldered there contact element may bend or even break. The fixed to the carrier contact elements that can be mounted before mounting the carrier on the vehicle component or subsequently, offer the advantage that they reliably contact the contact surface of the circuit board with the corresponding contact surface on the vehicle component and no longer part of the circuit board, but are the carrier, which greatly simplify the storage, transport and installation of both the carrier and the electronic device with his PCB and make it uncomplicated. Here, above all, an increase in the number of units per unit volume can be achieved, resulting in a lower transport capacity, which is thus also a contribution to environmental protection. In addition to the simpler transport, easier handling and better protection of the contact elements no costly assembly of the circuit board with the spring-like contact elements longer required, especially since a soldering on the underside of the circuit board is eliminated, so that no thermal stress on the contact elements required during soldering is. Further advantages are the fact that all kinds of geometric shapes of contact elements and contact materials can be used. Particular preference is lamellar contact elements having a mounting end for fixing to the carrier and having a free end, so that they can move under load from the direction of the vehicle component or from the direction of the circuit board in its axial direction, thereby damaging the contact element excluded are. Furthermore, a cost savings in the event of replacement should be mentioned as an advantage, since in the event that the circuit board is replaced, new contacts are unnecessary. It is also advantageous that the replacement of the contact elements in the adhered state of the carrier on the vehicle component is possible and the assembly (if necessary, the disassembly) of the contact elements can be automated. By the lamellar contact spring, but Other types of contact elements are conceivable, is given by the great travel reliable contact and by their closed shape (arc shape in the direction of the contact surfaces) insensitivity in handling. Furthermore, a contact spring of this type is cheaper to produce, since no extensive bending operations are required {less bending stations in the tool, the tool is much smaller and cheaper, higher stroke rate is possible, which means lower process costs. Lower material consumption, since there is virtually no waste and a much thinner belt can be used, resulting in further weight and material savings).

The printed circuit board, or optionally also a plurality of printed circuit boards which can be inserted into the carrier, can be covered by an additional housing, for which purpose the carrier is designed to receive a housing for covering the printed circuit board. The advantage here is that in particular the sensitive electronic components are protected on the upper side of the printed circuit board. Such a housing can be detachably or non-detachably connected to the carrier, for example by means of force and / or positive engagement, wherein, for example, a latching connection, an adhesive connection, a clip connection or the like come into consideration.

In a further development of the invention, the carrier and / or the housing for covering the circuit board for shielding the electronic device from irradiation or radiation of interfering radiation are formed. By using appropriate materials (for example for the carrier a plastic, the electrically conductive materials are mixed or having an electrically conductive coating, as well as the housing, which may alternatively consist of a solid metal), is avoided that interference radiation operation interfering with radiation into the electronic device. It is just as possible to prevent the electronic device from emitting interfering radiation, in particular electromagnetic waves from reaching an interior of a vehicle.

To improve the cost situation and to simplify the mounting of the carrier, this consists of a plastic that is processed in a plastic injection molding process. After the carrier has been produced, an adhesive is applied to the underside of the carrier facing the vehicle component, wherein in a particularly preferred embodiment it is a double-sided adhesive film which is provided with a protective layer before assembly of the carrier which is pulled off, so that the carrier can be adhered to the vehicle component. Alternatively, however, other adhesive methods are also conceivable, for example application of an adhesive only to the underside of the carrier and / or only to the vehicle component and subsequent joining of carrier to the vehicle component. It is important here that such adhesives are used that meet the requirements for use in vehicles, in particular light and temperature resistance to provide the necessary contact forces due to the strong vibration during operation of the vehicle.

As already stated, the carrier may be designed to accommodate more than one printed circuit board, so that advantageously results in a modular design, so that one or more electronic devices depending on the equipment variant of the vehicle manufacturer can be installed. For this purpose, the carrier is designed so that it can accommodate electronic devices according to the maximum equipment. If the maximum equipment desired by the buyer of the vehicle, a complete assembly of the carrier with the several required electronic devices, while missing equipment compared to the maximum equipment, the corresponding unnecessary electronic devices are omitted. At this point, then simply no electronic device or circuit board is inserted into the carrier. Due to the design of spring clips directly from the support frame and modules can be used, which are designed completely without or in many areas without contact springs. By molded onto the support frame spring tabs these modules are pressed into the abutment of the support frame and thus can withstand the strong vibration during operation of the vehicle.

Short description of the drawing

Further embodiments of the invention, to which this is not limited, are specified in the subclaims, described below and explained with reference to the figures.

Figur 1

ausschnittsweise einen Träger, der flächig ausgebildet ist, aus Kunststoff besteht und in einem Kunststoffspritzgussverfahren hergestellt wird,

Figur 1a

eine konstruktive Ausgestaltung von Rasthaken mit zugehörigen Gegenlagern,

Figur 2

die Kontaktfeder, die als lamellenartige Kontaktfeder ausgebildet ist,

Figur 3

den Träger, der nach seiner Herstellung in Längsrichtung eine gebogene oder polygonale Form aufweist, einmal mit und einmal ohne Abdeckung,

Figur 4

die Einbaulage des Trägers, wobei hier neben den schon beschriebenen und gezeigten Konstruktionen eine weitere Detailkonstruktion gezeigt ist,

Figur 5

eine Draufsicht auf die Oberfläche des Trägers, von der aus die Leiterplatte montiert wird,

Figur 6

einen Träger mit eingesetzter Leiterplatte, bei dem eine Trägerfolie mit Leiterschichten kontaktiert wird.

Show it:

FIG. 1

a section of a support which is flat, made of plastic and is produced in a plastic injection molding process,

FIG. 1a

a structural design of latching hooks with associated abutments,

FIG. 2

the contact spring, which is designed as a lamellar contact spring,

FIG. 3

the support which, after being manufactured longitudinally, has a curved or polygonal shape, once with and once without cover,

FIG. 4

the mounting position of the carrier, wherein here, in addition to the already described and shown constructions, a further detailed construction is shown,

FIG. 5

a plan view of the surface of the support from which the circuit board is mounted,

FIG. 6

a carrier with inserted circuit board, in which a carrier film is contacted with conductor layers.

Ways to carry out the invention

FIG. 1 shows a detail of a carrier 1, which is flat, made of plastic and is produced in a plastic injection molding process. The production in the plastic injection molding process has the advantage that all elements of the carrier 1 described below can be formed on this, so that after completion of the plastic injection molding process, the finished, mountable carrier 1 is available.

First, the carrier 1 as latching means for fixing a circuit board to the carrier 1 on a plurality of latching hooks 2, which have at its end an abutment 3. At the in FIG. 1 In the embodiment shown, the latching hooks 2 arranged on a longitudinal side of the carrier 1 are made longer with respect to latching hooks 4 with counter bearings 5 which are provided on the opposite longitudinal side of the carrier 1. Thus, a part of the latching hook, namely the latching hooks 2, movable, and another part, namely the latching hooks 4, fixed (rigid) formed. This causes the printed circuit board with its long side obliquely in the direction of the support 1 is first supported on the latching hooks 4 and their abutments 5 and then quasi pressed in the form of a pivoting movement on the thrust bearing 3 of the latching hooks 4 in the direction of the support 1 and on this locks. Thus, the abutment 3, 5, that the circuit board at a maximum distance to the surface of the flat-shaped carrier 1 can be fixed. However, this is not sufficient for defined fixing of the printed circuit board to the carrier 1, so that at least one, in particular a plurality of spring tabs 6, which protrude from the surface of the carrier 1, are provided. This spring tabs 6 cause by applying force to the underside of the circuit board that this is pressed against the abutment 3, 5 and thus the circuit board in a defined position above the surface of the support 1 "floats". If there are tolerances, expansions due to temperature fluctuations or movements of the circuit board relative to the carrier 1 due to vibrations, a compensation of the spring tabs 6 is possible. That is, the spring tabs 6, the circuit board normally against the abutment 3, 5 press, the circuit board but in the above environmental conditions also from the thrust bearings 3, 5 can stand out. The described process of inserting the printed circuit board in the carrier 1 is particularly advantageous, since due to the latching hooks 2, 4 with their abutments 3, 5 is given a simple centering of the circuit board with respect to the carrier 1. A complex insertion of the edge side of the circuit board in a groove is thus eliminated. The latching hooks 2 (or the differently configured latching hooks 4) can also be present on the short end sides of the carrier 1, wherein it should also be mentioned that the carrier 1 is not necessarily elongated, as shown, but also, for example, other rectangular shapes (Such as with only a slightly different length-to-width ratio) or square shape may have. As a rule, the outer contours of the carrier 1 are designed such that they protrude only slightly beyond the outer contour of the printed circuit board to be used (or possibly several printed circuit boards to be used).

Furthermore, the flat-shaped support 1 has at least one recess, in particular a plurality of recesses 7 for receiving a contact spring 8.

FIG. 1a shows a possible structural design of the latching hooks 2, 4 with associated thrust bearings 3, 5.

The FIG. 2 shows the contact spring 8, which is designed as a lamellar contact spring. It is fixedly arranged with a mounting end on the support 1, while in the context of the recess 7, a free end of the contact spring 8 can move in the longitudinal direction of the contact spring 8, so that it is possible to compress the contact spring 8 so far, but to avoid damage , The upward, in the direction of the underside of the circuit board, and the downward, in the direction of the vehicle component directed curvatures of the blades of the contact spring 8 contact corresponding contact surfaces, so that after the carrier 1 has been adhered to the vehicle component, a contact between the contact spring and the contact surface is realized on the vehicle component, while the contact between the contact spring 8 and the Contact surface on the circuit board takes place when the circuit board is fixed to the carrier 1.

The FIG. 3 shows that the carrier after its production in the longitudinal direction has a curved or polygonal shape, whereby the carrier 1 of the contour of the vehicle component is adaptable. If it is a flat vehicle component, it is sufficient if the carrier 1 also designed plan and thus arranged plane-parallel to the vehicle component. However, the vehicle component has no planar design, which is particularly true for vehicle windows, but also for other vehicle components, such. As bumpers or the like, is often the case, it is necessary to adjust the contour of the carrier 1 (and optionally the circuit board) of the contour of the vehicle component. For this purpose, the invention provides that the carrier 1 after its manufacture in the longitudinal direction of a curved (depending on the design of the vehicle component a concave or convex) or may also have a polygonal shape. This is in FIG. 3 (top illustration) recognizable, where the carrier 1 can be prepared by appropriate shaping in the plastic injection molding process so that it has a curved shape. The realization of a bent shape after production has the advantage that the carrier 1 has the necessary rigidity, which is not given for carriers that are straight after their production and when installed on the vehicle component. With regard to the realization of a curved or polygonal shape of a printed circuit board 9 is based on the patent application DE 103 12 158.7 directed. The circuit board 9 is fixed here without housing or encapsulation on the carrier 1. The carrier 1 is glued to the vehicle part ("glue").

Because if a straight-shaped support is bent during installation, it may lead to material weakening (in particular by material compression or expansion), whereby the necessary shape and rigidity is no longer given. It is also particularly advantageous, as in FIG. 3 shown that not only the carrier 1 of the contour of the vehicle component is customizable, but at the same time the circuit board 9 is a curved or polygonal shape has, which is also adapted to the contour of the carrier 1 and thus the contour of the vehicle component.

The lower illustration of the FIG. 3 shows the circuit board 9 with additional cover, in particular a housing or a housing shell or an encapsulation, each made of plastic.

The FIG. 4 shows the mounting position of the carrier 1, in which case a further detail construction is important here in addition to the constructions already described and shown. It is thus provided that the carrier 1 has at least one stop 10, preferably several stops 10, 11. These stops 10, 11 cause the circuit board 9 is held at a minimum distance to the surface of the carrier 1, so that the contact springs can not be plastically deformed. This means that the circuit board 9 is held with or without Gehäusehalbschale (encapsulation) between the thrust bearings 3, 5 and the stops 10, 11, but can move between them against overcoming the force of the spring tabs 6 and the force of the contact spring 8. Besides, this is in this FIG. 4 recognizable as the contacting takes place by means of the contact springs 8 defined in the carrier 1. On a vehicle window (generally a dielectric support) 12 there are one or more contact surfaces 13 located at the end of antenna conductor structures located in or on the vehicle window 12. These contact surfaces 13 come to rest on the particular lamellar contact springs 8, which are arranged in the carrier 1 pre-assembled, and are easily compressed when the carrier 1 is glued to the vehicle window 12. The adhesive bond between the carrier 1 and the vehicle window 12 is in FIG. 4 not shown, it can be assumed that this has been done. On the opposite side of the contact springs 8 contact surfaces 13 are also present, which are located on the underside of the circuit board 9. These contact surfaces 13 also come to bear the particular lamellar contact spring 8, so that thereby an electrical contacting of the antenna conductor structure is given to the antenna amplifier, after the carrier 1 has been glued to the vehicle window 12 and the circuit board 9 has been used according to the invention in the carrier 1.

FIG. 5 shows a plan view of the surface of the carrier 1, from which the circuit board 9 is mounted. Here are the locking hooks 2, 4 recognizable, which ensure the determination of the circuit board 9 on the support 1 in the greatest possible distance, while the spring tabs 6, the printed circuit board 9 against the abutment 3, 5 of the latching hooks 2, 4 presses. Also again various stops 10, 11, 14 can be seen that hold the circuit board 9 in a smallest possible distance to the surface of the carrier 10 after overcoming the spring force of the spring tabs 6. These stops 10, 11, 14 are also produced by plastic injection molding and can be provided at various points on the surface of the carrier 1. In the embodiment according to FIG. 5 the stop 10 is formed as a projection, wherein the projection is directed on the one hand in the direction of the underside of the printed circuit board to be used 9 and on the other hand in the direction of the freely movable end of the contact spring 8. This stop 10 in tab shape thus has two functions simultaneously, namely a stop for the circuit board 9 and a guide and fixing the freely movable end of the contact spring 8. The same applies to the stop 11, which is formed over a large area and at the end of the freely movable end the contact spring 8 is located. Below the stop 11, therefore, the freely movable end of the contact spring 8 can move in a slot, while the upper side of the stop 8 serves to limit the travel for the printed circuit board 9. Furthermore, dome-shaped stops 14 are provided, which protrude from the surface of the carrier 1. These stops 14 have two functions. Once they serve to limit the travel of the circuit board 9, on the other hand, the fixed end of the contact spring 8 is fixed with them, ie via these dome-like stops 14 and the attachment of the contact spring 8 takes place on the carrier 1. In addition to the described and shown embodiments of the stops 10, 11th , 14 are also differently shaped and arranged at other locations of the carrier 1 stops conceivable that only serve to limit the path of the circuit board 9 and otherwise have no other function. Thus, such protruding attacks can also in the field of locking hooks 2, 4, the Spring tabs 6, the edge regions, the center regions or the like are provided on the carrier 1. Important in the dimensioning of the stops 10, 11, 14 and / or other stops is that they have such a geometric shape and a number that the circuit board 9 almost uniformly over its extension plane-parallel to the carrier 1 their smallest possible distance to this can take.

While the circuit board 9 is shown only schematically in the figures, this has in practice electrical and electronic components and connectors and the like in order to realize the function of the electronic device, in particular the antenna amplifier of the vehicle. In this case, the circuit board 9 is provided with a protection for the protection of the electronic device, which is realized for example by encapsulation or insertion of the circuit board in a housing. Such a prepared printed circuit board with housing can then be readily used in the carrier 1 according to the invention with its locking means and with these cooperating spring means, wherein the locking and spring means are adapted to the geometric shape of the housing half shell or the encapsulation of the electronic device. If the printed circuit board is not protected by a housing prior to insertion into the carrier, it can be considered to subsequently enclose the printed circuit board 9 inserted in the carrier 1 with a housing, for which the carrier 1 and / or the printed circuit board 9 corresponding fastening means for the subsequent having to be attached housing. In this case, it can be thought that the housing to be subsequently attached is part of the vehicle component on which the carrier is fixed, or that it is another separate vehicle component.

FIG. 6 shows a structure in which the circuit board 9 in the carrier 1, as already described, is used. The carrier 1 is direct, or as in FIG. 1 shown, indirectly on the vehicle window 12 (or any other electrical vehicle component) arranged, for example via an adhesive layer 15. The contacting of a arranged on the vehicle component conductor structure (antenna structure) with the contact surface 13 is again via the contact spring 8, after the Printed circuit board 9 was inserted into the carrier 1. The conductor structure is embodied here as a carrier foil 16 with electrical conductor layers 17 located thereon, wherein the carrier foil 16 is arranged on or at least partially in the vehicle component. The adhesive layer 15 is partially present between the underside of the carrier 1 and the top of the vehicle component and may, but need not, also be present between the underside of the carrier 1 and the top of the carrier film 16 and between the underside of the carrier film 16 and the top of the vehicle component , The carrier film 16 with its conductor layers 17 can alternatively or additionally also serve the signal transmission and the power supply of the electronic device. The carrier film 16 with the conductor layers 17 may extend beyond the carrier 1 or be completely covered by this.

Finally, it should be pointed out again generally that the described system and the associated mounting method can be used on windows and on any, especially large plastic body parts (for example, roofs and tailgates) of vehicles. Instead of vehicle windows so the application of any components of a vehicle from a dielectric material or non-conductive material (partially or completely) is possible.

LIST OF REFERENCE NUMBERS

1.

carrier

Second

latch hook

Third

thrust bearing

4th

latch hook

5th

thrust bearing

6th

spring shackle

7th

recess

8th.

contact spring

9th

circuit board

10th

attack

11th

attack

12th

vehicle window

13th

contact area

14th

attack

15th

adhesive layer

16th

support film

17th

conductor layer

Claims (9)

1. Support (1) for holding an electronic device, in particular an antenna amplifier of a vehicle, having at least one printed circuit board (9), wherein the electronic device can be attached to a vehicle component, which is composed of dielectric material, in particular a vehicle window pane (12), by means of the support (1) which is composed of an electrically non-conductive material, wherein the support (1) is of flat design and has latching means and also spring means, which interact with said latching means, for securing the printed circuit board (9) to the support (1), and also at least one recess for holding a contact element for the purpose of establishing electrical contact between a contact area (13) of the printed circuit board (9) and a corresponding contact area (13) of the vehicle component, characterized in that the latching means are designed as latching hooks (2, 4), which project out of the surface of the support (1), with mating bearings (3, 5), and the spring means are designed as spring lugs (6) which project out of the surface of the support (1), wherein the latching means are physically separated from the spring means.
2. Support (1) according to Claim 1, characterized in that some of the latching hooks (2) with mating bearings (3) are movable, and some of the latching hooks (4) with mating bearings (5) are of fixed design, or both latching hooks (2, 4) are mobile and equipped with mating bearings.
3. Support (1) according to one of the preceding claims, characterized in that the support (1) has a bent or polygonal shape in the longitudinal direction after it is produced, as a result of which the support (1) can be matched to the contour of the vehicle component.
4. Support (1) according to one of the preceding claims, characterized in that the support (1) has at least one stop (10), preferably a plurality of stops (10, 11, 14), with which the printed circuit board (9) can be secured at a predefinable extremely short distance from the surface of the support (1).
5. Support (1) according to one of the preceding claims, characterized in that the support (1) is designed to hold a housing, housing half shell or encapsulation for covering the printed circuit board (9).
6. Support (1) according to one of the preceding claims, characterized in that the support (1) and/or the housing are/is designed for coupling the printed circuit board (9) in order to shield the electronic device against irradiation by or emission of interference radiation.
7. Support (1) according to one of the preceding claims, characterized in that the support (1) has an adhesive means on the bottom face which faces in the direction of the vehicle component.
8. Support (1) according to one of the preceding claims, characterized in that the support (1) is designed to hold more than one printed circuit board (9).
9. Support (1) according to one of the preceding claims, characterized in that the support (1) can be produced using a plastic injection-moulding process.

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