DE3713475A1 - Process for producing a vehicle sun visor - Google Patents
Process for producing a vehicle sun visorInfo
- Publication number
- DE3713475A1 DE3713475A1 DE19873713475 DE3713475A DE3713475A1 DE 3713475 A1 DE3713475 A1 DE 3713475A1 DE 19873713475 DE19873713475 DE 19873713475 DE 3713475 A DE3713475 A DE 3713475A DE 3713475 A1 DE3713475 A1 DE 3713475A1
- Authority
- DE
- Germany
- Prior art keywords
- core
- fabric
- welded
- sun visor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/22—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using layers or sheathings having a shape adapted to the shape of the article
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/433—Casing-in, i.e. enclosing an element between two sheets by an outlined seam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/729—Textile or other fibrous material made from plastics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/0014—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping tubes or blown tubular films
- B29C67/0018—Turning tubes inside out
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J3/00—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles
- B60J3/02—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles adjustable in position
- B60J3/0204—Sun visors
- B60J3/0278—Sun visors structure of the body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2313/00—Use of textile products or fabrics as reinforcement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3005—Body finishings
- B29L2031/3035—Sun visors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3055—Cars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/719—Curtains; Blinds; Shades
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung einer Fahrzeug-Sonnenblende aus einem Kern und einem Bezug aus tex tilem Stoff, aus dem zunächst eine Tasche gefertigt wird, die gewendet und nach dem Einsetzen des Kerns geschlossen wird.The invention relates to a method for producing a Vehicle sun visor made of a core and a cover made of tex tilem fabric, from which a bag is first made, the is turned and closed after inserting the core.
Sonnenblenden für Pkw werden üblicherweise derart hergestellt, daß ein der Sonnenblende die Kontur gebender Kern mit Kunst stoffolien umgeben wird, die an der umlaufenden Randkante des Körpers verschweißt werden. Der Kern besteht im allgemeinen aus einem formsteifen Gerüst aus Draht oder Kunststoff, wel ches mit dem Lager und Gegenlager der Sonnenblende verbunden ist, sowie aus Kunststoffschaum.Sun visors for cars are usually manufactured in such a way that a contour of the sun visor with art is surrounded by plastic films, which on the peripheral edge of the Body are welded. The core is generally from a rigid frame made of wire or plastic, wel ches connected to the bearing and counter bearing of the sun visor is, as well as from plastic foam.
Für Pkw mit hochwertiger Ausstattung werden aber auch Sonnen-. blenden verlangt, deren Bezüge aus textilen Stoffen, z.B. Ge weben oder Vliesstoffen bestehen, vor allem dann, wenn der Fahrzeughimmel ebenfalls aus solchen Materialien angefertigt ist.For cars with high-quality equipment but also sun. dazzle, whose covers are made of textile materials, e.g. Ge weaving or nonwovens, especially if the Vehicle headlining also made from such materials is.
Gemäß DE-OS 31 05 851 können derartige Sonnenblenden unter Verwendung dehnfähiger textiler Stoffe aus zwei den Kern bil denden Halbschalen hergestellt werden. Der textile Stoff wird an den umlaufenden Randkanten der Halbschalen umgebogen und mit diesen verklebt. Die beiden Halbschalen werden anschließend durch Verschweißen, Verkleben, Clipsen oder dergleichen zusam mengefügt. Nachteilig sind dabei jedoch die aufwendigen Verfah rensschritte, die zu kaum vertretbaren Kosten führen.According to DE-OS 31 05 851 such sun visors can under Use of stretchable textile materials from two to the core bil end half shells. The textile fabric will bent at the peripheral edges of the half shells and glued to these. The two half shells are then by welding, gluing, clips or the like together quantity added. However, the complex procedure is disadvantageous steps that lead to barely justifiable costs.
In der europäischen Patentschrift 58 742 sind Varianten des zu letzt erwähnten Verfahrens beschrieben. Ihnen allen ist gemein sam, daß der Sonnenblendenkern einen Klemmbereich aufweist, durch den der textile Stoff festgelegt und gehalten wird. Bei ungeteilter Ausführung des Kerns wird, wie bereits in der DE- PS 9 49 143 beschrieben, zunächst eine Tasche links genäht, in die nach dem Wenden der Kern eingesetzt wird. Die Randbereiche an der offenen Seite des Bezugs werden in einen Schlitz an der oberen Längskante des Kerns eingeklemmt.In the European patent 58 742 variants of the are last-mentioned method described. They are common to all sam that the sun visor core has a clamping area, by which the textile material is fixed and held. At undivided execution of the core is, as already in the DE PS 9 49 143 described, first a pocket sewn on the left, in which is inserted after turning the core. The marginal areas on the open side of the cover are in a slot on the pinched upper longitudinal edge of the core.
Abgesehen davon, daß das Nähen und das Einklemmen des Stoffes im Klemmschlitz eines ungeteilten Kerns ebenfalls sehr aufwen dige Verfahrensschritte sind, hat sich gezeigt, daß bei Wärme einwirkung die Klemmung und damit auch die Spannung des Stoffes nachläßt. Die Folge hiervon sind Falten, die den optischen Ein druck und den Wert der Blende beeinträchtigen.Apart from that the sewing and pinching the fabric also very much in the clamping slot of an undivided core The process steps are, it has been shown that with heat influence the clamping and thus the tension of the fabric subsides. The result of this are wrinkles that the optical one pressure and affect the value of the aperture.
In der DE-OS 31 28 853 wird ein Herstellungsverfahren für stoffbezogene Sonnenblenden beschrieben, das insbesondere für unelastische Stoffe geeignet ist. Dabei findet eine periphere Rahmenleiste Anwendung, durch die das Bild einer einheitli chen Oberfläche verlorengeht, das bei Sonnenblenden mit Kunst stoffolienbezug so geschätzt wird.In DE-OS 31 28 853 a manufacturing process for described fabric-related sun visors, especially for inelastic fabrics is suitable. This takes place a peripheral Frame bar application through which the image of a uniform surface is lost, that of sun visors with art fabric cover is so estimated.
Schließlich ist es bei einer auf dem Markt erhältlichen Sonnen blende auch schon bekannt, aus einem textilen Stoff eine Tasche zu nähen und deren Öffnung nach dem Einsetzen des Kerns dadurch zu verschließen, daß die Stoffränder mittels einer zwischen sie eingeführten Schweißhilfsfolie durch Hochfrequenzschweißen mit einander verbunden werden. Da eine derartige Schweißnaht ver hältnismäßig breit sein muß, um zuverlässig zu halten, und in voller Breite von der Sonnenblende absteht, stört sie den op tischen Eindruck, und zwar auch dann noch, wenn sich nur an der Oberkante der Sonnenblende eine derartige nach außen ab stehende Schweißnaht befindet.After all, it is with a sun available on the market already known, a bag made of a textile to sew and opening them after inserting the core to seal that the fabric edges by means of a between them introduced welding auxiliary foil by high frequency welding with to be connected. Since such a weld seam ver must be relatively wide to hold reliably, and in protrudes full width from the sun visor, it disturbs the op a technical impression, even if it only turns on the upper edge of the sun visor from the outside standing weld.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der eingangs genannten Art zu schaffen, welches sich fertigungs technisch schneller, einfacher und kostengünstiger als die bisher zu diesem Zweck eingesetzten Verfahren ausführen läßt und zu einer Sonnenblende mit einer unauffälligen, aber gleich wohl strapazierfähigen Nahtstelle im Bezug führt.The invention has for its object a method of to create the type mentioned, which is manufacturing technically faster, easier and cheaper than that previously used for this purpose and to a sun visor with an inconspicuous but the same hard-wearing seam in the cover.
Vorstehende Aufgabe wird erfindungsgemäß dadurch gelöst, daß wenigstens zwei Zuschnitte eines mit Ultraschall schweißfähi gen textilen Stoffs mit ihren Außenseiten aneinanderliegend zur Tasche verschweißt werden, und nach dem Wenden und Ein setzen des Kerns deren Öffnung durch Ultraschallschweißen geschlossen wird.The above object is achieved in that at least two blanks of an ultrasonic weldable gene textile fabric with their outer sides adjacent to be welded to the bag, and after turning and on setting the core to open it by ultrasonic welding is closed.
Das neue Verfahren bietet den Vorteil, daß in der Großserie die Fertigungszeit zur Herstellung einer Tasche im Vergleich zum bisher praktizierten Nähvorgang wesentlich verkürzt werden kann. Verglichen mit den bisher gebräuchlichen Schweißverfahren bei der Herstellung von Sonnenblenden hat das neue Verfahren den Vorzug, daß sich im fertigen Zustand die Schweißnaht in der Tasche befindet und somit den äußeren Eindruck nicht stört. Die nach innen gewendete Schweißnaht wirkt von außen gleichmäßiger als eine genähte Naht.The new process has the advantage that in large series the manufacturing time compared to the production of a bag can be significantly shortened compared to the previous sewing process can. Compared to the welding processes used up to now in the manufacture of sun visors the new process the advantage that the weld seam in the finished state the bag and therefore not the external impression disturbs. The weld seam turned inwards works from the outside more even than a sewn seam.
In weiterer bevorzugter Ausgestaltung der Erfindung wird vor dem Verschweißen der Stoffzuschnitte auf einem derselben ein Spiegelrahmen aufgeschweißt. Vorteilhaft ist dabei die Anein anderreihung gleichartiger Verfahrensschritte und die Tatsa che, daß der Spiegelrahmen bei der Schweißung der Tasche im Gegensatz z.B. zu einem Nähvorgang überhaupt nicht stört. In a further preferred embodiment of the invention welding the fabric blanks on one of them Welded mirror frame. Anein is advantageous here sequence of similar procedural steps and the facts che that the mirror frame when welding the bag in Contrast e.g. does not interfere with a sewing process at all.
Die nach innen gekehrte Schweißnaht erstreckt sich vorzugs weise längs der Unterkante und der beiden Seitenkanten der Sonnenblende. Diese Kanten sind am stärksten den Blicken der Fahrzeugsinsassen ausgesetzt. Zweckmäßigerweise sollte sich die genannte Schweißnaht auch noch um die oberen Ecken der Sonnenblende herum bis auf deren Oberkante erstrecken. Um die Schweißnaht unauffällig enden zu lassen, ist in einer prakti schen Ausführungsform der Erfindung vorgesehen, daß sie bis an eine der Öffnungen im Bezug herangeführt ist, durch die sich im fertig montierten Zustand ein tragender Bolzen er streckt. In einer anderen bevorzugten Ausführungsform erstreckt sich die Schweißnaht auch über diejenigen Stellen am Umfang des Kerns, wo im fertig montierten Zustand ein tragender Bol zen sitzt, und es wird an diesen Stellen nachträglich ein Loch in dem Bezug angebracht.The inward weld seam preferably extends along the bottom edge and the two side edges of the Sun visor. These edges are most visible to the eye Vehicle occupants exposed. Appropriately should the weld mentioned also around the upper corners of the Extend the sun visor up to the top edge. To the It is practical to let the weld seam end inconspicuously rule embodiment of the invention provided that they up is brought up to one of the openings in the cover through which a load-bearing bolt when fully assembled stretches. In another preferred embodiment extends the weld seam also extends over those points on the circumference of the core, where, when fully assembled, a supporting bolt zen sits, and there is a hole in these places afterwards attached in the cover.
Der Kern der Sonnenblende kann nur begrenzt weich sein. Eine besonders weich gepolsterte Ausführung einer Sonnenblende kann aber dadurch erhalten werden, daß zwischen dem Kern und dem Bezugsstoff ein schweißbares Polstermaterial, z.B. eine Lage weicher Schaumstoff, eingeschlossen wird. In diesem Fall bietet die Erfindung eine weitere vorteilhafte Ausführungsvariante, indem nämlich beim Schweißvorgang wenigstens einer der Stoff zuschnitte gleichzeitig mit einem außen an ihm anliegenden Polstermaterial verschweißt wird.The core of the sun visor can only be soft to a limited extent. A particularly softly padded version of a sun visor can but are obtained by the fact that between the core and the Cover fabric a weldable cushioning material, e.g. a location soft foam. In this case offers the invention a further advantageous embodiment variant, by at least one of the materials during the welding process cuts at the same time as an outside of it Upholstery material is welded.
Nachdem der Bezugsstoff der Sonnenblende auf dem größten Teil seines Umfangs durch eine kräftige, innenliegende Schweißnaht verbunden ist, kann nach dem Einsetzen des Kerns das Schlies sen der Tasche in herkömmlicher Weise erfolgen. Zur Vermei dung der eingangs erwähnten Mängel wird jedoch auch hierfür eine Verbesserung vorgeschlagen. Sie besteht darin, daß die Öffnung der Tasche durch Ultraschallschweißen ohne Schweiß hilfsfolie verschlossen wird. Dies ergibt eine sehr schmale, dennoch feste Schweißnaht, die zwar nach außen absteht, aber so klein ist, daß sie an dieser Stelle nicht als störend auf fällt. After covering the fabric of the sun visor for the most part of its circumference through a strong, internal weld seam is connected, the closure can be inserted after inserting the core sen the bag done in a conventional manner. To avoid However, the shortcomings mentioned at the beginning will also be corrected for this proposed an improvement. It is that the Opening of the bag by ultrasonic welding without sweat auxiliary film is closed. This results in a very narrow, nevertheless firm weld seam, which protrudes outwards, but is so small that it does not appear to be a nuisance at this point falls.
Alternativ kann der Öffnungsrand des Stoffs in eine Fuge, einen Schlitz oder einen Klemmspalt an der Oberkante der Son nenblende oder eines mit diesem verbundenen Teils eingeführt und mittels einer Sonotrode durch Ultraschall an dem festen Teil bzw. allgemein dem Kern angeschweißt werden.Alternatively, the opening edge of the fabric into a joint, a slot or nip on the top edge of the Son or a part connected to it and by means of a sonotrode by ultrasound on the solid Part or generally the core are welded.
Die Erfindung wird nachstehend anhand der Zeichnung näher er läutert. Es zeigen:The invention is based on the drawing he he purifies. Show it:
Fig. 1 einen Kern einer Fahrzeug-Sonnenblende; FIG. 1 is a core of a vehicle sun visor;
Fig. 2 einen zum Kern nach Fig. 1 passenden Bezug in Form einer vorgefertigten Tasche, in welche der Kern eingesetzt wird; FIG. 2 a cover matching the core according to FIG. 1 in the form of a prefabricated pocket into which the core is inserted;
Fig. 3 einen Querschnitt durch den oberen Randbe reich einer Sonnenblende während des Schlies sens der Öffnung eines taschenförmig vorge fertigten Bezugs. Fig. 3 shows a cross section through the upper Randbe rich a sun visor during the closing sens the opening of a pocket-shaped pre-made cover.
Der in Fig. 1 beispielhaft gezeigte Kern 10 einer Sonnenblende besteht in bekannter Weise aus Schaumkunststoff, in den ein nicht gezeigter Drahtrahmen, ein Lager 12, ein Gegenlager 14 und eine nur in Fig. 3 im Schnitt gezeigte, den oberen Rand 16 des Kerns bildende Leiste 18 eingeschäumt sind. Die Leiste 18 besteht aus Kunststoff, vorzugsweise ABS. Die Leiste kann zu sammen mit dem Lager und Gegenlager eine spritztechnische Ein heit bilden. Sie kann sich bis zum Gegenlager erstrecken oder über dieses hinausgeführt sein.The core 10 of a sun visor shown by way of example in FIG. 1 is made in a known manner from foam plastic, into which a wire frame (not shown), a bearing 12 , a counterbearing 14 and an upper edge 16 of the core, which is only shown in section in FIG. 3, form Bar 18 are foamed. The strip 18 is made of plastic, preferably ABS. The strip can form an injection molding unit together with the bearing and counter bearing. It can extend to the counter bearing or can extend beyond it.
Der Bezug, der im fertig montierten Zustand der Sonnenblende den Kern 10 umhüllt, besteht aus einem textilen Stoff, aus dem zunächst eine Tasche 20 gemäß Fig. 2 hergestellt wird. Sie hat am oberen Rand eine Öffnung 22, welche ausreichend groß bemessen sein muß, um den Kern 10 in die Tasche 20 ein setzen zu können. Am Rand hat diese, wie der Schnitt B-B zu Fig. 2 zeigt, eine bis auf die Öffnung 22 umlaufende, nach innen ragende Schweißnaht 24. Zu ihrer Aufnahme im fertig montierten Zustand kann der Kern 10, wie im Schnitt A-A zu Fig. 1 gezeigt, am unteren Rand und an den Seitenkanten mit einer entsprechend der Schweißnaht 24 bemessenen Nut 26 ge formt sein.The cover which surrounds the core 10 in the fully assembled state of the sun visor consists of a textile material from which a pocket 20 according to FIG. 2 is first produced. It has an opening 22 at the upper edge, which must be dimensioned large enough to be able to insert the core 10 into the pocket 20 . At the edge, as the section BB to FIG. 2 shows, it has an inwardly projecting weld seam 24 that extends up to the opening 22 . To accommodate them in the fully assembled state, the core 10 , as shown in section AA to FIG. 1, can be formed at the lower edge and on the side edges with a groove 26 dimensioned according to the weld seam 24 .
Die Herstellung der Tasche 20 geht so vor sich, daß zunächst zwei Zuschnitte 28, 29 aus mit Ultraschall schweißfähigem textilem Stoff derart übereinander gelegt werden, daß die textilen Stoffe mit derjenigen Seite, welche im fertig mon tierten Zustand die Außenseite der Sonnenblende bildet, gegen einander weisen. Die beiden Stofflagen 28, 29 werden dann zwischen Sonotroden und Amboß gebracht. Die Form der Sonotro den entspricht der Form der Tasche 20. Während des Schweißvor gangs verschweißt das textile Gewebe miteinander. Die Veran kerung ist so gut, daß sich bei einem Wärmetest (120°; 2h) an der fertiggestellten Sonnenblende die Verbindung nicht löst.The manufacture of the pocket 20 is such that first two blanks 28 , 29 made of ultrasonically weldable textile material are placed one on top of the other in such a way that the textile materials with the side that forms the outside of the sun visor against one another in the fully assembled state point. The two layers of fabric 28 , 29 are then placed between the sonotrodes and anvil. The shape of the Sonotro corresponds to the shape of the pocket 20th During the welding process, the textile fabric is welded together. The anchorage is so good that the connection does not come off during a heat test (120 °; 2h) on the finished sun visor.
Nach dem Schweißen besteht die Möglichkeit, den äußeren Stoff rand zu beschneiden. Dann folgt das Umstülpen bzw. Wenden der Tasche derart, daß die beim Schweißen innenliegende Außenseite der Stoffe 28 und 29 nach außen gewendet wird. Es wurde ge funden, daß die Ansicht der Schweißnaht von außen sehr sauber ausfällt, selbst wenn nach dem Wenden die Schweißnaht auf Zug belastet wird.After welding, it is possible to trim the outer fabric edge. Then the bag is turned inside out or turned in such a way that the inside of the fabric 28 and 29 , which is inside during welding, is turned outside. It was found that the view of the weld seam from the outside is very clean, even if the weld seam is subjected to tension after turning.
Nachdem der Kern 10 in die gewendete Tasche 20 gemäß Fig. 2 durch die Öffnung 22 hindurch eingesetzt worden ist, muß noch die Öffnung 22 geschlossen werden. Dies geschieht im Ausfüh rungsbeispiel gemäß Fig. 3 dadurch, daß die die Öffnung 22 bil denden Ränder der Stoffzuschnitte 28, 29 in einen nach oben offenen Längsspalt 38 und eine sich unten anschließende Boh rung 40 in der Leiste 18 maschinell eingeschoben werden. Zur leichten Montage sollte die Spaltweite etwa 1,2 bis 1,5 mal so groß sein wie die doppelte Stofflage. An den oberen, abge schrägten Kanten 42, 43 wird anschließend mittels einer Sono trode 44 der Stoff 28, 29 durch Ultraschallschweißung mit der Kunststoffleiste 18 fest verbunden.After the core 10 has been inserted into the turned pocket 20 according to FIG. 2 through the opening 22 , the opening 22 still has to be closed. This is done in exporting approximately example of FIG. 3 in that the opening 22 bil Denden edges of the fabric panels 28, 29 a at the bottom of subsequent Boh tion be inserted by machine in the bar 18 40 in an upwardly open longitudinal slot 38 and. For easy assembly, the gap width should be about 1.2 to 1.5 times as large as the double layer of fabric. Is at the top which eclip beveled edges 42, 43 and then by means of a Sono trode 44 of the fabric 28, 29 fixedly connected by ultrasonic welding to the plastic strip 18th
Bei weniger elastischen textilen Stoffen kann vorgesehen wer den, daß sich die Kunststoffleiste 18 über das Lager 12 und das Gegenlager 14 erstreckt, damit eine ausreichend große Öff nung 22 erhalten wird, um den Kern 10 in die Tasche 20 ein stecken zu können. In diesem Fall bietet sich die Verwendung einer zweiteiligen statt der einteiligen Leiste 18 an, wobei eine senkrechte mittlere Trennfuge vorhanden ist. Die beiden Teile der Leiste sind z.B. durch Clipse nach Art von Druck knöpfen miteinander zu verbinden. Die Ultraschallverschwei ßung erfolgt hierbei vor dem Zusammenclipsen der beiden Lei stenteile.In the case of less elastic textile materials, it can be provided that the plastic strip 18 extends over the bearing 12 and the counterbearing 14 so that a sufficiently large opening 22 is obtained in order to be able to insert the core 10 into the pocket 20 . In this case, it is advisable to use a two-part strip 18 instead of a one-part strip, a vertical middle parting line being present. The two parts of the bar are to be connected to each other, for example, by clips in the manner of press buttons. The ultrasonic welding takes place here before clipping the two Lei stentteile.
Die direkte Schweißverbindung der Stoffe hat eine so große Festigkeit, daß eine sehr schmale Schweißnaht ausreicht, die mit Bezug auf Fig. 3 nach oben von der Sonnenblende absteht (nicht gezeigt). Es versteht sich, daß bei dieser direkten Ul traschallverschweißung der Stoffe 28, 29 eine oder mehrere Sono troden 44 sowie ein zugehöriger Amboß in einer mit Bezug auf die Stellung der Sonotrode 44 um 90° gedrehten Stellung, d.h. mit horizontaler Bewegungsrichtung in Ansatz zu bringen sind.The direct weld connection of the fabrics has such a high strength that a very narrow weld seam is sufficient which, with reference to FIG. 3, projects upwards from the sun visor (not shown). It is understood that with this direct ultrasonic welding of the substances 28 , 29 one or more sonotrodes 44 and an associated anvil in a position rotated by 90 ° with respect to the position of the sonotrode 44 , ie to be brought into approach with a horizontal direction of movement .
Inzwischen ist durch weitere praktische Versuche erwiesen wor den, daß auch die oben beschriebene Schweißnaht 24 so schmal gehalten werden kann, daß es ihretwegen keiner besonderen Maß nahmen aufseiten des Kerns 10 bedarf. Eine Nut 26 zur Aufnahme der Schweißnaht 24 ist also nicht unbedingt erforderlich.In the meantime it has been proven by further practical tests that the weld 24 described above can also be kept so narrow that it requires no special measures on the part of the core 10 because of it. A groove 26 for receiving the weld seam 24 is therefore not absolutely necessary.
Es versteht sich, daß die Erfindung unabhängig ist von der äußeren Form und dem Aufbau des Kerns 10. Es besteht auch eine große Auswahl an textilen Stoffen 28, 29, die sich in der be schriebenen Weise durch eine verdeckte Schweißnaht miteinander verbinden lassen. In beispielhafter Ausführung können die tex tilen Stoffe 28, 29 z.B. aus einem Polyester- oder Polyamid oder anderem Kunststoffgewebe, ggf. gemischt mit Baumwolle, be stehen. Wegen der Schweißbarkeit mit Ultraschall sollte der Anteil des Kunststoffs am Gewebe allerdings in der Regel nicht weniger als etwa 30% betragen.It is understood that the invention is independent of the external shape and structure of the core 10 . There is also a large selection of textile fabrics 28 , 29 which can be connected to one another in the manner described by a hidden weld seam. In an exemplary embodiment, the textile fabrics 28 , 29, for example made of a polyester or polyamide or other plastic fabric, optionally mixed with cotton, be. Because of the weldability with ultrasound, however, the proportion of plastic in the fabric should generally not be less than about 30%.
Claims (9)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3744832A DE3744832C2 (en) | 1987-04-06 | 1987-04-06 | Easily produced sun visor for cars |
DE19873713475 DE3713475A1 (en) | 1987-04-06 | 1987-04-06 | Process for producing a vehicle sun visor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE19873713475 DE3713475A1 (en) | 1987-04-06 | 1987-04-06 | Process for producing a vehicle sun visor |
Publications (2)
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DE3713475A1 true DE3713475A1 (en) | 1988-10-27 |
DE3713475C2 DE3713475C2 (en) | 1990-07-12 |
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DE19873713475 Granted DE3713475A1 (en) | 1987-04-06 | 1987-04-06 | Process for producing a vehicle sun visor |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0414132A1 (en) * | 1989-08-25 | 1991-02-27 | UNITED TECHNOLOGIES AUTOMOTIVE, Inc. | Vehicle sun visor and method of making |
EP0456573A1 (en) * | 1990-05-11 | 1991-11-13 | Rockwell Automotive Body Systems-France En Abrege:Rockwell Abs-France | Process for making an upholstered sun visor |
FR2665397A1 (en) * | 1990-08-01 | 1992-02-07 | Rockwell Abs France | Method for manufacturing a sun visor covered with fabric |
WO1993014950A1 (en) * | 1992-02-04 | 1993-08-05 | Fico I.T.M., S.A. | Sun visor for motor vehicles |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE949143C (en) * | 1955-04-04 | 1956-09-13 | Happich Gmbh Gebr | Sun visors, in particular for motor vehicles, and methods of manufacturing the same |
DE2851485A1 (en) * | 1977-11-29 | 1979-05-31 | Faure Bertrand Ind | METHOD OF ULTRASONIC WELDING OF A SOFT, THERMOPLASTIC MATERIAL TO A BODY MADE OF STIFF, THERMOPLASTIC MATERIAL |
-
1987
- 1987-04-06 DE DE19873713475 patent/DE3713475A1/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE949143C (en) * | 1955-04-04 | 1956-09-13 | Happich Gmbh Gebr | Sun visors, in particular for motor vehicles, and methods of manufacturing the same |
DE2851485A1 (en) * | 1977-11-29 | 1979-05-31 | Faure Bertrand Ind | METHOD OF ULTRASONIC WELDING OF A SOFT, THERMOPLASTIC MATERIAL TO A BODY MADE OF STIFF, THERMOPLASTIC MATERIAL |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0414132A1 (en) * | 1989-08-25 | 1991-02-27 | UNITED TECHNOLOGIES AUTOMOTIVE, Inc. | Vehicle sun visor and method of making |
EP0456573A1 (en) * | 1990-05-11 | 1991-11-13 | Rockwell Automotive Body Systems-France En Abrege:Rockwell Abs-France | Process for making an upholstered sun visor |
FR2661872A1 (en) * | 1990-05-11 | 1991-11-15 | Rockwell Automotive Body Syst | METHOD OF MANUFACTURING A FABRIC-COVERED SUN VISOR. |
US5148588A (en) * | 1990-05-11 | 1992-09-22 | Rockwell Automotive Body Systems-France | Process for the manufacture of a fabric-covered visor |
FR2665397A1 (en) * | 1990-08-01 | 1992-02-07 | Rockwell Abs France | Method for manufacturing a sun visor covered with fabric |
WO1993014950A1 (en) * | 1992-02-04 | 1993-08-05 | Fico I.T.M., S.A. | Sun visor for motor vehicles |
US5411309A (en) * | 1992-02-04 | 1995-05-02 | Fico I.T.M. S.A. | Automobile sun visor |
Also Published As
Publication number | Publication date |
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DE3713475C2 (en) | 1990-07-12 |
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