DE102013107173A1 - Method for producing a lamella with a decorative element and lamella with decorative element - Google Patents

Abstract

The present invention relates to a method for producing a lamella (10) and a lamella (10) comprising a lamellar body (12) made of plastic, wherein a receiving area (24) is formed on at least one side of the lamella body (12) and the receiving area (24) has at least one opening (20; 21) and a portion which extends along the side and is formed so that with the lamellar body (12) a coated decorative element (14) can be connected, which in the connected state of the lamella (10) forms a unit with the lamellar body (12). At least one connecting part (16; 18) of the decorative element (14) is inserted into the at least one opening (20; 21) and the decorative element (14) is connected to the laminar body (12) such that at least one contact surface (32) of the decorative element (12) 14) on at least one contact surface (30) of the lamellar body (12) and at least one connecting surface (26) of the at least one opening (20; 21) abut against at least one connecting surface (28) of the at least one connecting part (16; the decorative element (14) and the lamellar body (12) are joined together by means of ultrasonic welding.

Description

The present invention relates to a method for producing a lamella, comprising a lamellar body made of plastic and a coated decorative element, which is connected to the lamella. Furthermore, the present invention relates to a blade produced by the method.

From the prior art, for example from the EP 1 655 160 B1 , an air vent with a nozzle housing forming an air outlet opening is known, in which at least one lamella is arranged, which has a first area and a second area adjoining thereto. The lamella is associated with a releasable element, which is kraftformschlüssig connected to the lamella, so that the first region is seen in the attached state of the releasable element in the transverse direction of the lamella at least partially covered, wherein the releasable element is U-shaped with a base web and two U -Children is designed. The connection of the releasable element takes place at EP 1 655 160 B1 via a latching connection with the lamella.

In addition, it is known to attach decorative elements by gluing on a lamella. However, both the locking and the bonding have disadvantages. When bonding only small amounts of an adhesive can be used, since on the one hand, the components involved in the process are relatively thin-walled and on the other hand, in the connected state of the components of the adhesive may not emerge from the joints between the components. Due to the small amount of adhesive, however, the result is often unsatisfactory because the components are not sufficiently firmly bonded together. As a result, all parts must be inspected, yet with a high reject rate. The locking has the disadvantage that also no firm and permanent connection is ensured. Therefore, for example, the interconnected parts can be solved in the finished state of the blade.

Object of the present invention is therefore to provide a method for producing a blade and a blade, wherein a decorative element is permanently and firmly connected to a fin body.

According to the invention the object is achieved by a method having the features specified in claim 1 and by a blade having the features specified in claim 6. Advantageous developments of the invention are specified in the subclaims.

In the method according to the invention for producing a lamella, comprising a lamellar body made of plastic, wherein a receiving area is formed on at least one side of the lamellar body and the receiving area has at least one opening and a section which extends along the side and is designed such that a coated decorative element made of plastic can be connected to the lamellar body, which forms a unit with the lamellar body in the connected state of the lamella, at least one corresponding connecting part of the decorative element is inserted into the at least one opening and the decorative element is connected to the lamellar body such that at least one Contact surface of the decorative element on at least one contact surface of the lamellar body and at least one connecting surface of the at least one opening abut at least one connecting surface of the at least one connecting part, wherein subsequently end the decorative element and the plate body by means of ultrasonic welding are joined at least at the joint surfaces with each other at least at certain points.

In the method according to the invention for producing a lamella, a lamella is provided which provides a firm connection of the lamellar body to the decorative element. A lamella made according to the method fulfills predetermined reference values (for example by means of gluing) compared with a lamella produced according to the prior art, which satisfy a certain degree of safety and strength (for example head impact test).

Compared to a connection by means of gluing, the invention has the advantage that can be dispensed with adhesive and at the same time a higher strength is achieved. By ultrasonic welding, the decorative element with the lamellar body can be selectively connected in the openings and over the connecting parts. As a result, the joints are not visible from the outside and it can no plastics, or emerge from the lamella as in bonding glue components.

A lamella produced by the method therefore also has an attractive external appearance, which does not differ substantially from a lamella made in one piece. However, in the method according to the invention, the advantage over a lamella made in one piece and provided with a layer is that the entire lamina does not have to be subjected to a coating process, whereby large areas are covered and subjected to the coating process. Furthermore, in the method for the decorative element used other types of plastic than for the lamellar body.

In the method, the decorative element with the lamellar body can be additionally connected to each other via the abutting contact surfaces of the lamellar body and the decorative element. As a result, an even firmer connection of the lamellar body is achieved with the decorative element.

The decorative element can be produced in an upstream injection molding process, wherein a chrome coating of the decorative element takes place prior to bonding to the lamellar body. The production of the decorative element and of the lamellar body by means of an injection molding process makes it possible to produce the components quickly and inexpensively (lamellar body, decorative element).

The connecting surfaces and the contact surfaces of the decorative element, which have a plastic surface free of the chromium coating, can be produced by covering the surfaces, by applying a protective layer, which is removed after the chrome coating, or by subsequent, partial removal of the chromium coating become. The fact that only the decorative element is provided with a chrome coating, only small areas of the decorative element must be covered or exempt from the chrome coating, which must then remain free for ultrasonic welding.

The removal of the chromium coating can be done for example by means of laser or mechanical abrasion. For the purposes of the invention, mechanical removal also includes partial breaking of the chromium coating.

In a lamella according to the invention with a lamellar body made of plastic, which has at least one receiving area on at least one side, wherein the receiving area has at least one opening and a portion which extends along one side of the lamellar body and is formed so that with the lamellar body a coated plastic decorative element is connected, which forms a unit with the decorative element, at least one corresponding connecting part of the decorative element is inserted into the at least one opening in the receiving area and the decorative element connected to the lamellar body that at least one contact surface of the decorative element on at least one contact surface the lamellar body and at least one connecting surface of the at least one opening rests against at least one connecting surface of the at least one connecting part and the decorative element with the lamellar body on the one another lying connecting surfaces of the at least one connecting part and the at least one opening and / or on the abutting contact surfaces of the disk body and the decorative element are at least selectively connected to each other by means of ultrasonic welding.

Such a lamella has a significantly higher strength than the lamellae known from the prior art and is also simple and inexpensive to produce. Furthermore, the same advantages which have already been stated with reference to the method for producing a lamella result.

In addition, the decorative element may have a chrome coating, which does not extend to the connecting and contact surfaces of the decorative element. In further embodiments, the decorative element can be almost completely provided with a chrome coating, wherein the surfaces must remain free, i. have a plastic surface, which are welded to corresponding surfaces of the lamellar body by means of ultrasound.

Furthermore, the decorative element of acrylonitrile-butadiene-styrene (ABS) or acrylonitrile-butadiene-styrene / polycarbonate (ABS / PC) and / or the lamellar body made of polyamide (PA) exist. In further embodiments, both the lamellar body and the decorative element can be made of other plastics.

In addition, instead of a chromium coating, another coating can also be applied to at least one part of the decorative element.

Furthermore, the lamella may be the lamella of a Luftausströmers, a ventilation grille or a decorative part in motor vehicles.

The advantages stated with regard to the method for producing such a lamella also apply to the finished lamella. This concerns in particular the design options with regard to the finished lamella and the method for producing the lamella, thereby also resulting in significantly lower costs for a finished lamella.

Further design options and features will become apparent from the following description of the figures of non-limiting embodiments to be understood.

The embodiments shown in the figures are not necessarily to scale and may differ from the illustrated embodiments to be implemented.

In the drawings show:

1 in perspective view a decorative element;

2 an opening in a receiving area;

3 in perspective view a decorative element and a lamellar body;

4 in perspective view, a lamella;

5 a slat in plan view;

6 a schematic representation of a slat in plan view;

7 a section through the slat 6 ; and

8th another cut through the slat 6 ,

1 shows a schematic, perspective view of a decorative element 14 , The decorative element 14 is essentially U-shaped or C-shaped profile. The decorative element 14 consists of a plastic, such as an ABS / PC. Furthermore, the decorative element 14 on its outer surface 34 (in 1 not shown) a chrome coating (also in 1 not shown). At the surface 34 opposite contact surface 32 are three connecting parts 16 and 18 educated.

The decorative element 14 is produced in an injection molding process, wherein the connecting parts 16 and 18 be formed during injection molding with. This is followed by a chrome coating for the surface 34 which in the 1 to 6 not shown. However, the chrome coating is only for the surface 34 so that the connecting parts 16 and 18 as well as the contact area 32 no chrome coating 46 (please refer 7 and 8th ) exhibit.

The connecting parts 16 and 18 have connecting surfaces 28 on. The connecting surfaces 28 are the surfaces which are in the connected state with a lamellar body 12 at corresponding connection surfaces 26 in openings 20 respectively. 21 of the lamellar body 12 issue. The connecting part 16 has a different configuration than the connecting parts 18 , Likewise, the opening points 20 one the connecting part 16 corresponding, from the openings 21 different embodiment.

2 shows an opening 20 in a reception area 24 a lamellar body 12 , The lamellar body 12 is also made of plastic, but in a preferred embodiment of a polycarbonate. The lamellar body 12 is also produced in an injection molding process, with openings 21 and the in 2 shown opening 20 be formed. The opening 20 extends to a certain extent over the length of the connecting part 16 in the lamellar body 12 in and has protrusions 22 on. In the inserted state of the connecting part 16 in the opening 20 there is therefore a free space 44 (please refer 7 ). Likewise, the openings extend 21 according to the length of the connecting parts 18 about a certain amount in the lamellar body 12 into and have a corresponding, the shape of the connecting parts 18 corresponding embodiment. In the inserted state of the connecting parts 18 in the openings 21 therefore also exist free spaces.

The projections 22 as well as the remaining walls of the opening 20 form connecting surfaces 26 , which in the connected state of the lamellar body 12 with the decorative element 14 at the connection surfaces 28 of the connecting part 16 issue. Likewise lie in the connected state of the blade 10 the connecting surfaces of the connecting parts 18 at the corresponding connection surfaces of the openings 21 at.

Furthermore, the lamellar body 12 in the recording area 24 a corresponding configuration, so that the decorative element 14 on the lamellar body 12 abuts and also can be prefixed.

For producing a lamella 10 becomes the decorative element 14 over the connecting parts 16 and 18 far into the openings 20 and 21 of the lamellar body 12 pushed in until the contact surface 32 of the decorative element 14 at the contact surface 30 of the lamellar body 12 is applied.

3 shows a decorative element 14 , which in front of a lamellar body 12 is arranged. Before an ultrasonic welding of the decorative element 14 with the lamellar body 12 is done, the decorative element 14 over the connecting parts 16 and 18 in the openings 20 and 21 of the lamellar body 12 used. The middle connecting part 16 and the middle opening 20 of the lamellar body 12 are designed differently than the connecting parts 18 and the corresponding openings 21 on the outer sides of the lamellar body 12 or the decorative element 14 , Furthermore, the receiving area 24 of the lamellar body 12 between the openings 20 and 21 Afford 42 on. The strips 42 in the recording area 24 are according to the configuration of the contact surface 32 of the decorative element 14 educated. Because the contact surface 32 of the decorative element 14 a has certain structure, the bar indicates 42 a corresponding structure, so that the lamellar body 12 with the decorative element 14 can be connected as in 4 schematically dargstellt. Here lies the contact surface 32 of the decorative element 14 at the contact surface 30 of the lamellar body 12 such that a lamella 10 is formed with a continuous surface. Continuous surface in this context means that no gap or clearance between the lamellar body 12 and the decorative element 14 consists.

The lamellar body 12 also has an incision 36 and a pin 38 on, which at a projection in the immediate vicinity of the incision 36 is arranged. Furthermore, the lamellar body 12 a connecting element 40 on. The slat shown in the figures 10 is the lamella of a Luftausströmers, wherein over the connecting element 40 the lamella mounted in a fan housing and over the pin 38 the slat 10 is coupled via a coupling rod with other fins.

5 shows a finished lamella 10 in plan view, wherein after insertion of the connecting parts 16 and 18 in the openings 20 and 21 an ultrasonic welding takes place. In the ultrasonic welding, a connection of the connecting parts takes place 16 and 18 of the decorative element 14 with the openings 20 . 21 of the lamellar body 12 , wherein the connecting parts 16 and 18 over their connecting surfaces 28 with the openings 20 . 21 over their connecting surfaces 26 be welded.

6 shows a schematic representation of a blade 10 , where in the openings 20 and 21 used connecting cables 16 and 18 of the decorative element 14 are shown in dashed lines. Further, as well as the contact surfaces 30 and 32 of the lamellar body 12 and the decorative element 14 abut each other.

The 7 and 8th show a section through the slat 10 , in which 7 a section along the line AA and 8th a section along the line BB (from 6 ) shows.

How out 7 it can be seen has the decorative element 14 on its surface 34 a chrome coating 46 on. This extends only along the outer surface 34 so that the connecting parts 16 and 18 (where in 7 only connecting part 16 is shown) of which are free. Similarly, the contact surfaces of the decorative element 14 , which on the lamellar body 12 abut, no chrome coating 46 on. The opening 20 or also the other openings 21 are designed so that in the inserted state of the connecting part 16 or the connecting parts 18 a free space 44 remains free. The open space 44 serves to absorb plasticizing after ultrasonic welding. As a result, no deformations occur in the lamellar body 12 or at the lamella 10 ,

8th shows a further section through the lamella 10 along the BB line of 6 , How out 8th can be seen, the decorative element 14 over the bars 42 of the lamellar body 12 be prefixed. This is the decorative element 14 designed so that the front ends of the decorative element 14 have a smaller distance from each other than the area behind it, which is the chromium coating 46 is facing. Furthermore, the bars 42 of the lamellar body 12 designed so that they are formed correspondingly thicker in their front portion than in the contact area between the decorative element 14 and the lamellar body 12 ,

When placing or attaching the decorative element 14 on the lamellar body 12 Therefore, a locking takes place, which, however, only serves for prefixing. After locking the decorative element 14 over the bars 42 of the lamellar body 12 and the inclusion of the connecting parts 16 and 18 in the openings 20 and 21 is the decorative element 14 sufficiently firm and exact position with the lamellar body 12 connected. However, this connection is not sufficient to operate the slat 10 to ensure a permanent attachment. Therefore, then followed by ultrasonic welding, which is a permanent connection of the decorative element 14 with the lamellar body 12 to form the lamella 10 provides.

The ultrasonic welding can also, ie in addition, in the area of bars 42 of the lamellar body 12 take place, this with the corresponding adjacent surfaces of the contact surface 32 of the decorative element 14 connect. These are the leads 42 designed so that even in the connected state, a free space 48 remains free. This serves to accommodate the liquefying plastic of the decorative element 14 and the lamellar body 12 or the last 42 of the lamellar body 12 ,

The chrome coating 46 can be different on the decorative element 14 be upset. For example, the decorative element 14 completely or almost completely with the chrome coating 46 provided with the chrome coating 46 extends beyond the actual area and then the areas or sections of the decorative element 14 from the chrome coating 46 be freed, which they should not have. This can be done for example by means of lasers. Furthermore, the areas or the adjacent areas on the portion which the chrome coating 46 should have, with a protective varnish or other cover means are provided and then the decorative element 14 with a chrome coating 46 be provided.

The coating of plastic parts, for example with a chrome coating 46 , is well known, so that the method is not described in detail. Advantageously, various plastics for the decorative element 14 and the lamellar body 12 be used. Only the decorative element 14 must be subjected to a coating, due to the smaller size compared to the lamellar body 12 the coating process made much easier and the production of lamellae 10 considerably simplified.

The openings 20 and 21 and the connecting parts 16 and 18 can also be designed so that after insertion of the connecting parts 16 . 18 of the decorative element 14 in the openings 20 . 21 of the lamellar body 12 a latching takes place. As a result, the decorative element 14 and the lamellar body 12 prefixed and must not be held in position during the subsequent Ultraschallverschweißens about separate devices and means to each other.

LIST OF REFERENCE NUMBERS

10

lamella

12

lamellar bodies

14

decorative element

16

connecting part

18

connecting part

20

opening

21

opening

22

head Start

24

reception area

26

interface

28

interface

30

contact area

32

contact area

34

surface

36

incision

38

spigot

40

connecting element

42

strip

44

free space

46

Chromium coating

48

free space

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 1655160 B1 [0002, 0002]

Claims (9)

Method for producing a lamella ( 10 ), comprising a lamellar body made of plastic ( 12 ), wherein at least on one side of the Lamellenköpers ( 12 ) a receiving area ( 24 ) is formed and the receiving area ( 24 ) at least one opening ( 20 ; 21 ) and a portion which extends along the side and is formed so that with the lamellar body ( 12 ) a coated decorative element ( 14 ) can be connected from plastic, which in the connected state of the blade ( 10 ) with the lamellar body ( 12 ) forms a unit, wherein in the at least one opening ( 20 ; 21 ) at least one corresponding connecting part ( 16 ; 18 ) of the decorative element ( 14 ) and the decorative element ( 14 ) so with the lamellar body ( 12 ), at least one contact surface ( 32 ) of the decorative element ( 14 ) on at least one contact surface ( 30 ) of the lamellar body ( 12 ) and at least one interface ( 26 ) of the at least one opening ( 20 ; 21 ) on at least one connecting surface ( 28 ) of the at least one connecting part ( 16 ; 18 ), and then the decorative element ( 14 ) and the lamellar body ( 12 ) by means of ultrasonic welding at least at the connecting surfaces ( 26 ; 28 ) are connected to each other at least selectively. Method according to claim 1, wherein the decorative element ( 14 ) with the lamellar body ( 12 ) additionally over the abutting contact surfaces ( 30 . 32 ) of the lamellar body ( 12 ) and the decorative element ( 14 ). Method according to claim 1 or 2, wherein the decorative element ( 14 ) is produced in an upstream injection molding process, wherein a chromium coating ( 46 ) of the decorative element ( 14 ) before connecting to the lamellar body ( 12 ) he follows. Method according to claim 2 or 3, wherein the bonding surfaces ( 26 . 28 ) and the contact surfaces ( 30 . 32 ) of the decorative element ( 14 ), one of the chrome coating ( 46 ) have free plastic surface, by covering the surfaces, by applying a protective layer, which is removed after the chrome coating, or by subsequent, partial removal of the chromium coating ( 46 ) be generated. Method according to claim 4, wherein the removal of the chromium coating ( 46 ) by means of lasers or mechanical ablation. Slat ( 10 ) with a lamellar body made of plastic ( 12 ), which on at least one side at least one receiving area ( 24 ), wherein the receiving area ( 24 ) at least one opening ( 20 ; 21 ) and a portion extending along one side of the lamellar body ( 12 ) and is formed so that with the lamellar body ( 12 ) a coated decorative element ( 14 ) is made of plastic, which with the decorative element ( 14 ) forms a unit, wherein in the at least one opening ( 20 ; 21 ) in the reception area ( 24 ) at least one corresponding connecting part ( 16 ; 18 ) of the decorative element ( 14 ) and the decorative element ( 14 ) so with the lamellar body ( 12 ), at least one contact surface ( 32 ) of the decorative element ( 14 ) on at least one contact surface ( 30 ) of the lamellar body ( 12 ) and at least one interface ( 26 ) of the at least one opening ( 20 ; 21 ) on at least one connecting surface ( 28 ) of the at least one connecting part ( 16 ; 18 ) and the decorative element ( 14 ) with the lamellar body ( 12 ) over the adjoining connecting surfaces ( 26 . 28 ) of the at least one connecting part ( 16 ; 18 ) and the at least one opening ( 20 ; 21 ) and / or via the abutting contact surfaces ( 30 . 32 ) of the lamellar body ( 12 ) and the decorative element ( 14 ) are at least selectively connected to each other by means of ultrasonic welding. Slat ( 10 ) according to claim 6, wherein the decorative element ( 14 ) a chrome coating ( 46 ), which do not affect the bonding surfaces ( 26 . 28 ) and the contact surfaces ( 30 . 32 ) of the decorative element ( 14 ). Slat ( 10 ) according to claim 6 or 7, wherein the decorative element ( 14 ) of acrylonitrile-butadiene-styrene (ABS) or acrylonitrile-butadiene-styrene / polycarbonate (ABS / PC) and / or the lamellar bodies ( 12 ) consist of polyamide (PA). Slat ( 10 ) according to one of claims 6 to 8, wherein the lamella ( 10 ) a lamella ( 10 ) of a Luftausströmers, a ventilation grille or a decorative part of motor vehicles.

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