EP1477731A2 - Scheinwerfer für Fahrzeuge und Verfahren zum Herstellen einer Blendenwelle - Google Patents
Scheinwerfer für Fahrzeuge und Verfahren zum Herstellen einer Blendenwelle Download PDFInfo
- Publication number
- EP1477731A2 EP1477731A2 EP04006812A EP04006812A EP1477731A2 EP 1477731 A2 EP1477731 A2 EP 1477731A2 EP 04006812 A EP04006812 A EP 04006812A EP 04006812 A EP04006812 A EP 04006812A EP 1477731 A2 EP1477731 A2 EP 1477731A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- tube workpiece
- diaphragm shaft
- hollow body
- contour
- 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.)
- Withdrawn
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
- F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
- F21S41/698—Shaft-shaped screens rotating along its longitudinal axis
Definitions
- the invention relates to a headlight for vehicles with a bowl-shaped reflector with two firing locations and with one between a lens and the reflector arranged diaphragm shaft which is horizontal and Rotation axis running across the optical axis in several Rotational positions is arranged adjustable, the outer surface the diaphragm shaft for each rotary position Focal line, which has a light-dark boundary of a Light figure created.
- the invention further relates to a method for manufacturing an aperture shaft for a vehicle headlight.
- DE 197 39 089 A1 is a headlight for vehicles with a bowl-shaped bowl with two firing locations Known reflector, which has a lens and an aperture assigned.
- the aperture shaft extends across the optical axis of the arranged in the apex region of the reflector Light source.
- the aperture shaft is rotatable around its axis of rotation is supported and points to the formation of light-dark boundaries different light figures a lateral surface on that in different rotational positions accordingly form different focal lines.
- On the opposite Ends of the diaphragm shaft is a drive means or storage means arranged so that the diaphragm shaft positioned in the specified rotational positions and is adjustable in other rotational positions.
- the well-known aperture shaft can be made of magnesium Die casting.
- the object of the present invention is a headlight for vehicles and a manufacturing method to specify an aperture shaft in such a way that on the one hand the Accuracy of the focal lines of the headlamp to be formed is improved and that, on the other hand, the manufacturing costs be reduced.
- the invention is in connection characterized by the preamble of claim 1, that the aperture shaft as an elongated Hollow body is formed, the contour of the hollow body or the focal line by generating an inner one High pressure is produced.
- the method according to the invention is used to achieve the object characterized in that a tube workpiece in one two tool halves of a given contour is inserted that the end faces of the tube workpiece by means of two sealing stamps, of which at least a sealing stamp is provided with holes, sealed that the tool halves are under wrapping the outer surface of the pipe workpiece is closed, that a liquid through the holes in the sealing plunger Active medium pressed into the cavity of the tube workpiece is such that the outer surface of the tube workpiece is shaped according to the contour of the tool shape.
- the aperture shaft is shaped through the formation of a high internal pressure within the formed as a hollow body and sealed aperture shaft. Only a tubular workpiece serves as a semi-finished product, the one specified in two tool halves Existing tool shape is inserted. frontal Sealing punches seal the pipe workpiece so that subsequently by introducing a liquid active medium into the cavity of the tube workpiece, the outer surface of the tube workpiece shaped according to the shape of the tool halves becomes. This can advantageously be a high Shape and dimensional accuracy while maintaining repeatability achieve.
- the aperture shaft can be advantageous various materials, such as steel, aluminum or brass. An otherwise accruing Post-processing of the diaphragm shaft can be omitted. Overall, the manufacturing costs can be significantly reduced reduce.
- the as Hollow body-designed aperture shaft hollow cylindrical and / or hollow prismatic sections, so that at the Ends coupled drive means and / or storage means or can be integrated.
- the tubular aperture shaft serve as a carrier element for the inclusion of various functional parts, such as a circumferential seal for damping, expansion domes, Guide means, centering domes, levers, locks, eccentrics, Cams or the like.
- These functional parts can made of a plastic, glass fiber reinforced or carbon reinforced Plastic formed and with the aperture shaft be firmly connected so that the aperture shaft as a Multi-component component is designed.
- At least one Part of a motor, preferably a rotor, in one end the aperture shaft is integrated, so that the installation space is required of the engine is reduced.
- This allows the Aperture wave targeted changes in the beam path of the Headlights are made so that, for example, an overhead light can be generated.
- a headlight 1 shown in Figure 1 for vehicles is designed as a projection module that a reflector 2, one arranged in the apex region of the reflector 2 not shown light source, a lens 3 and one arranged between the reflector 2 and the lens 3 Has aperture shaft 4.
- the aperture shaft 4 is perpendicular to the optical axis of the Light source stored in a horizontal direction.
- a motor 5 is the drive means at the end of the diaphragm shaft 4 arranged by means of which the aperture shaft 4 in predetermined Rotational positions can be brought.
- a lateral surface 6 the aperture shaft 4 is designed such that in different adjusted around the axis of rotation of the aperture shaft 4 Rotational positions of the focal lines of the optical lighting system are formed by means of which light-dark boundaries differ Light figures are generated.
- the light source for example as a gas discharge lamp can be formed, is at a first location of the Reflector 2 arranged.
- the drive means for adjusting the aperture shaft 4 in the predetermined rotational positions as a rotary actuator 5 educated.
- the rotary actuator 5 extends axially Extension of the aperture shaft 4 on one end the same.
- the rotary actuator 5 has a frame-shaped Carrier 7 on to hold a stator 8 and a rotor 9.
- the rotor 9 is designed as a permanent magnet and is arranged in a rotationally fixed manner on or within the diaphragm shaft 4.
- the carrier 7 of the rotary actuator 5 is integral with one Frame 10 connected, which extends along a front Edge of the housing or the reflector 2 extends.
- the frame 10 has a cover surface 11, the Area of the housing opening below the aperture shaft 4 completely covers.
- the carrier 7 is the two End faces of the rotary actuator 5 covering end faces 12 formed, the two opposite connecting webs 13 are interconnected.
- the diaphragm shaft can be controlled electrically by the stator 8 4 in the specified rotary positions Longitudinal central axis of the same are spent.
- the diaphragm shaft is 4 designed as an elongated hollow body, the at an end facing the motor 5 hollow cylindrical section 14 and in a middle Area or opposite area a hollow prismatic Section 15 or 16 has.
- the hollow prismatic section 15 according to FIG. 4 in the middle Area has such a contour that in the corresponding The given focal lines can be formed for the cut-off line.
- the hollow prismatic section 16 according to FIG. 5 on the other front end of the aperture shaft 4 is in the shape of Storage means not shown for storing the Aperture shaft 4 adjusted.
- the wall thickness of the diaphragm shaft 4 can range from 0.2 mm to 1 mm.
- the aperture shaft 4 can be made from one Made of aluminum or steel or brass material his.
- the aperture shaft 4 is preferably made of an aluminum material the wall thickness 0.5 mm or 0.8 mm or from one Steel material made of wall thickness 0.6 mm.
- the aperture shaft 4 is preferably a rotary one Freeform roller trained.
- the aperture shaft 4 has one Mantle surface on at least two focal lines connecting surface section different from a cylindrical surface is trained. The outer surface runs thus irregular in the surface section.
- the aperture shaft 4 is a semi-finished product Pipe workpiece in a predetermined by two tool halves Contour of existing tool shape inserted.
- the end faces of the pipe workpiece are of which at least one sealing stamp has holes is sealed.
- the outer surface of the pipe workpiece and thus have the pipe workpiece is completely enclosed by the bores of the sealing plunger are a liquid active medium, preferably a water-oil emulsion, pressed in so that an increased pressure occurs within the pipe workpiece.
- This increased pressure within the tube workpiece the pipe workpiece is expanded under plant the lateral surface to the tool halves. It turns out thus a deformation of the pipe workpiece, the Shell surfaces of the pipe workpiece according to the contour of the tool halves are formed.
- the face seals After completion of the forming process are the face seals removed, so that the aperture shaft 4 thus produced for Assembly of the headlight 1 can be provided.
- the aperture shaft are molded onto the front faces Serve part of the drive means or storage means.
- the contour of the tool halves or the wall thickness of the pipe workpiece be designed such that during the forming process Perforations are created in the outer surface of the tube workpiece become. This can change the light distribution, for example, the generation of overhead light become.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
- Figur 1
- eine perspektivische Vorderansicht eines Scheinwerfers nach dem Projektionsprinzip mit einer Blendenwelle, an dessen einen Ende ein Antriebsmittel angeordnet ist,
- Figur 2
- eine Seitenansicht einer Blendenwelle,
- Figur 3
- einen Querschnitt durch die Blendenwelle gemäß Figur 2 entlang der Linie III - III
- Figur 4
- einen Querschnitt durch die Blendenwelle gemäß Figur 2 entlang der Linie IV - IV und
- Figur 5
- einen Querschnitt durch die Blendenwelle gemäß Figur 2 entlang der Linie V - V.
Claims (11)
- Scheinwerfer für Fahrzeuge mit einem zwei Brennorte aufweisenden schalenförmigen Reflektor und mit einer zwischen einer Linse und dem Reflektor angeordneten Blendenwelle, die um eine horizontale und quer zur optischen Achse verlaufende Drehachse in mehrere Drehstellungen verstellbar angeordnet ist, wobei die Mantelfläche der Blendenwelle für jede Drehstellung eine Brennlinie aufweist, welche eine Hell-Dunkel-Grenze einer Lichtfigur erzeugt, dadurch gekennzeichnet, dass die Blendenwelle (4) als ein langgestreckter Hohlkörper ausgebildet ist, wobei die Kontur des Hohlkörpers bzw. der Brennlinie durch Erzeugen eines inneren Hochdrucks hergestellt ist.
- Scheinwerfer nach Anspruch 1, dadurch gekennzeichnet, dass die Mantelfläche der Blendenwelle (4) mindestens in einem zwei Brennlinien verbindenden Flächenabschnitt bezogen auf eine Zylinderfläche abweichend und unregelmäßig verläuft.
- Scheinwerfer nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Hohlkörper hohlzylindrische und/oder hohlprismatische Abschnitte (14, 15, 16) aufweist, derart, dass Antriebsmittel (5) und/oder Lagerungsmittel mit dem Hohlkörper gekoppelt und/oder in dem Hohlkörper zumindest teilweise integriert sind.
- Scheinwerfer nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass in einem Ende der Blendenwelle (4) zumindest teilweise ein Rotor (9) eines als Antriebsmittel dienenden Motors (5) angeordnet ist.
- Scheinwerfer nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Antriebsmittel (5) als ein Schrittmotor ausgebildet ist.
- Scheinwerfer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Manteldicke der Blendenwelle (4) in einem Bereich zwischen 0,2 mm bis 1 mm liegt.
- Scheinwerfer nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Blendenwelle (4) aus Aluminium oder Stahl oder Messing hergestellt ist.
- Scheinwerfer nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Blendenwelle (4) als ein Hybridbauteil mit mindestens einem angespritzten Kunststoffteil ausgebildet ist.
- Verfahren zum Herstellen einer Blendenwelle für einen Fahrzeugscheinwerfer, dadurch gekennzeichnet, dass ein Rohrwerkstück in eine aus zwei Werkzeughälften vorgegebener Kontur bestehende Werkzeugform eingelegt wird, dass die Stirnseiten des Rohrwerkstücks mittels zweier Dichtstempel, von denen mindestens ein Dichtstempel mit Bohrungen versehen ist, abgedichtet werden, dass die Werkzeughälften unter Umschließen der Mantelfläche (6) des Rohrwerkstücks geschlossen werden, dass durch die Bohrungen des Dichtstempels ein flüssiges Wirkmedium in den Hohlraum des Rohrwerkstücks eingepresst wird, derart, dass die Mantelfläche (6) des Rohrwerkstücks entsprechend der Kontur der Werkzeugform umgeformt wird.
- Verfahren nach Anspruch 9, dadurch gekennzeichnet, dass das Rohrwerkstück während des Einpressens des flüssigen Wirkmediums vollständig abgedichtet ist.
- Verfahren nach Anspruch 9 oder 10, dadurch gekennzeichnet, dass die Wanddicke des Rohrwerkstücks und/oder die Kontur der Werkzeughälfte derart ausgebildet ist, dass durch das in den Hohlraum gepresste Wirkmedium Lochungen in der Mantelfläche des Rohrwerkstücks gebildet werden.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10321435 | 2003-05-12 | ||
| DE10321435A DE10321435A1 (de) | 2003-05-12 | 2003-05-12 | Scheinwerfer für Fahrzeuge und Verfahren zum Herstellen einer Blendenwelle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1477731A2 true EP1477731A2 (de) | 2004-11-17 |
| EP1477731A3 EP1477731A3 (de) | 2005-09-14 |
Family
ID=33016369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04006812A Withdrawn EP1477731A3 (de) | 2003-05-12 | 2004-03-22 | Scheinwerfer für Fahrzeuge und Verfahren zum Herstellen einer Blendenwelle |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1477731A3 (de) |
| DE (1) | DE10321435A1 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010031743A1 (de) * | 2008-09-16 | 2010-03-25 | Hella Kgaa Hueck & Co. | Scheinwerfer für fahrzeuge und herstellungsverfahren für blendeneinrichtung |
| JP2012114010A (ja) * | 2010-11-26 | 2012-06-14 | Stanley Electric Co Ltd | 車両用前照灯装置 |
| EP2597356A3 (de) * | 2011-11-28 | 2015-04-29 | Automotive Lighting Reutlingen GmbH | Projektionsmodul mit einer Blende aus Kunststoffmaterial |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009035743A1 (de) | 2009-08-01 | 2011-02-17 | Automotive Lighting Reutlingen Gmbh | Lichtmodul für einen Kraftfahrzeugscheinwerfer |
| DE102010045434B4 (de) | 2010-09-15 | 2018-05-30 | HELLA GmbH & Co. KGaA | Projektionsscheinwerfer für Fahrzeuge |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2777052B2 (ja) * | 1993-10-13 | 1998-07-16 | 株式会社小糸製作所 | 自動車用ヘッドランプ |
| WO1997036193A1 (de) * | 1996-03-26 | 1997-10-02 | Mannesmann Ag | Optoelektronisches abbildungssystem für industrielle anwendungen |
| US5743634A (en) * | 1996-07-31 | 1998-04-28 | Lexalite International Corporation | Perforated reflector for an ornamental luminaire |
| CN1081099C (zh) * | 1997-07-18 | 2002-03-20 | 科西马国际公司 | 具有椭圆形横截面的管状毛坯的液压成形方法及液压成形设备 |
| DE19739089A1 (de) * | 1997-09-06 | 1999-03-11 | Hella Kg Hueck & Co | Scheinwerfer für Fahrzeuge |
| DE19909413A1 (de) * | 1999-03-04 | 2000-09-07 | Hella Kg Hueck & Co | Scheinwerfer für Fahrzeuge |
-
2003
- 2003-05-12 DE DE10321435A patent/DE10321435A1/de not_active Withdrawn
-
2004
- 2004-03-22 EP EP04006812A patent/EP1477731A3/de not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010031743A1 (de) * | 2008-09-16 | 2010-03-25 | Hella Kgaa Hueck & Co. | Scheinwerfer für fahrzeuge und herstellungsverfahren für blendeneinrichtung |
| JP2012114010A (ja) * | 2010-11-26 | 2012-06-14 | Stanley Electric Co Ltd | 車両用前照灯装置 |
| EP2597356A3 (de) * | 2011-11-28 | 2015-04-29 | Automotive Lighting Reutlingen GmbH | Projektionsmodul mit einer Blende aus Kunststoffmaterial |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1477731A3 (de) | 2005-09-14 |
| DE10321435A1 (de) | 2004-12-02 |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
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