EP0845152B1 - Screening device for a motor vehicle headlamp and process for manufacturing the same - Google Patents

Screening device for a motor vehicle headlamp and process for manufacturing the same Download PDF

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Publication number
EP0845152B1
EP0845152B1 EP97925900A EP97925900A EP0845152B1 EP 0845152 B1 EP0845152 B1 EP 0845152B1 EP 97925900 A EP97925900 A EP 97925900A EP 97925900 A EP97925900 A EP 97925900A EP 0845152 B1 EP0845152 B1 EP 0845152B1
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EP
European Patent Office
Prior art keywords
shading
shading device
welding lug
welding
edge
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.)
Expired - Lifetime
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EP97925900A
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German (de)
French (fr)
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EP0845152A1 (en
Inventor
Peter Helbig
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Osram GmbH
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Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/003—Auxiliary devices for installing or removing discharge tubes or lamps
    • H01J9/006—Auxiliary devices for installing or removing discharge tubes or lamps for fluorescent lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/10—Shields, screens, or guides for influencing the discharge

Definitions

  • the invention relates to a shading device for a motor vehicle headlight lamp and a manufacturing method for a such shading device according to the preamble of the claim 1 or claim 3.
  • the shading device in the interior of the lamp bulb one with two filaments, namely the low beam and the High-beam incandescent lamp, equipped motor vehicle headlight lamp.
  • the shading device is usually involved around a dimming cap that partially surrounds the low beam filament, while the high-beam filament is outside the anti-glare cap is arranged.
  • Such a shading device is for example in the German Patent DD 224 445 discloses.
  • This patent describes a two-filament halogen lamp with a trough-like Dimming cap for the low beam filament.
  • the tub-like Anti-dazzle device has a flat, molded onto the edge of the anti-dazzle device Sweat tab used for welding to one end of the Low beam filament is used and also by the gripping tools the pick and place machines are used.
  • the Sweat plume is larger here than it would be required for this purpose so that comparatively high material costs are incurred.
  • Usually are used to manufacture the anti-dazzle caps from sheet metal or a large number of anti-dazzle caps in a sheet metal strip shaped and punched out.
  • the distance between two consecutive ones Anti-glare caps larger than that when punching out largest length dimension of the anti-dazzle device, so that during manufacture the anti-glare caps a relatively high proportion of the sheet metal is not used remains as a waste.
  • the shading device according to the invention Weld flag with a recess, the shape of which is essentially by the shape of one opposite the sweat flag Wall area of the shading device is determined. This Measure allows material savings of up to 15% and therefore lowers the manufacturing cost of the shading device accordingly, without the functionality of the shading device is affected. It also requires that Punching out and shaping the shading device according to the invention no additional work step.
  • the effective area of the shading device for shading curved and particularly advantageously trough-shaped.
  • the shading device can be arranged in such a way that the lamp to be shaded from several sides surrounds.
  • the shading device according to the invention also has advantageously one in comparison to the other wall parts the shading device pulled up, as shading nose designated wall area, which is opposite the welding lug.
  • This raised wall area serves for better shading of the luminous element shaded by the shading device against one arranged outside the shading device second filament.
  • the outline or the edge of the recess advantageously has approximately in the welding vane same shape as the edge line of the shading nose projected onto a plane.
  • the welding vane of the shading device according to the invention is advantageously provided with a cross rib that a humpback with one end of the shadowed filament enables.
  • the recess in the shading device according to the invention extends advantageously from Edge of the sweat plume up to the cross rib. The remaining, bilateral arranged to the recess and protruding beyond the cross rib Remaining webs of the sweat flag are sufficient as an approach for the Gripping tools of the placement and production machines.
  • the largest length dimension a shading device by the length of the longest Side of the rectangle with the smallest perimeter that defines the a plane running parallel to the welding vane on a scale of 1: 1 projected edge line of the shading device - including its Sweat flag - completely covered.
  • the shadowing nose of the next shading device is advantageous from that from the sweat vane of the immediately preceding one Shading device shaped stamped sheet material.
  • the shape or the edge of the recess in the welding lug is essentially determined by the outline of the shading nose.
  • the shading device in the preferred embodiment shown in FIGS. 1 to 3 is a molybdenum anti-dazzle device 1 for a motor vehicle headlight lamp, in particular for a two-filament halogen lamp.
  • Such lamps are under the name H4 lamp commercially available.
  • the anti-dazzle device 1 of the preferred embodiment of the invention is designed like a tub. It essentially has one flat bottom provided with two welding beads 2a Anti-dazzle device also has an essentially integrally formed on its edge flat sweat 3 on. The opposite of the sweat 3 Wall area 4a of anti-dazzle device 1 is compared pulled up to the remaining wall areas 4b of the anti-dazzle device 1 and forms the so-called shading nose 4a, which the low beam and high beam filament (not shown) shadows against each other. The area effective for shading the low beam filament is of the bottom 2 and the curved wall areas 4a, 4b Anti-dazzle device 1 is formed.
  • the anti-glare cap 1 is mirror-symmetrical with respect to the center, perpendicular to Bottom 2 and in the longitudinal direction through the anti-dazzle device 1 Mirror level A-A.
  • the edge 2, 4a, 4b effective for shading molded welding lug 3 is equipped with a transverse rib 3a, that for hump welding with one end of the low beam filament serves.
  • the welding lug 3 has a cutout 5 on, which extends from the edge of the welding lug 3 to the transverse rib 3a.
  • the edge of the recess 5 of the welding vane 3 has approximately the same shape or contour as that projected onto a plane Edge line 6 of the shading nose 4a of the anti-dazzle device 1. Zu Both sides of the recess 5 each remain on the cross rib 3a protruding and belonging to the welding flag 3 7a, 7b. These webs 7a, 7b are sufficient as an approach for the gripping tools the assembly and production machines.
  • the maximum depth the recess 5 is 1.7 mm.
  • the maximum height of the shading nose 4a is Measured from floor 2 approx. 4.1 mm.
  • the shading nose looms over it 4a the remaining wall areas 4b in height by approximately 1.4 mm.
  • the anti-dazzle caps 1, 1 ', 1 "according to the invention are in the same orientation from a molybdenum sheet strip 8 in the same Working step shaped and punched out (Fig. 4).
  • Fig. 4 the distance two immediately successive anti-dazzle devices 1, 1 ' or 1 ', 1 "smaller than the largest length dimension of a dimming cap 1, 1 ', 1 ".
  • the welding lug 3, 3' each anti-dazzle device 1, 1 ' has a recess 5, 5' into which the immediately engages the following anti-dazzle cap 1 ', 1 ".
  • the shading nose 4a ', 4a "of the next anti-dazzle device 1', 1" is thereby made that from the welding lug 3, 3 'of the immediately preceding one Anti-dazzle device 1, 1 'formed from stamped sheet metal material. Form the recess 5, 5 'in the welding lug 3, 3' is thus through Edge of the shading nose 4a ', 4a ". All anti-dazzle caps 1, 1 ', 1 "are shaped identically. The edge of the recess 5 in the Welding vane 3 therefore has approximately the same shape as the edge line 6 of the shading nose 4a projected onto a plane Dimming cap 1. The agreement is only approximate because the shading nose 4a at the same time during the stamping process is subjected to a shaping process.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

A screening device, in particular a low beam shield or screen, is disclosed for screening the luminescent body of a motor vehicle headlamp. The screening device (1) consists of a sheet metal part and has a welding lug (3) shaped at the edge of the screening surface (2, 4a, 4b) of the screening device (1). The welding lug (3) has a recess (5) whose shape is substantially determined by the shape of an area (4a) of the wall of the screening device (1) opposite the welding lug (3). These screening devices (1) are shaped and stamped in series out of a metal sheet. The distance between two successive screening devices (1) is smaller than the longest dimension of each screening device (1). This screening device (1) enables about 15 % material savings without impairing its operation.

Description

Die Erfindung betrifft eine Abschattungsvorrichtung für eine Kraftfahrzeugscheinwerferlampe und ein Herstellungsverfahren für eine solche Abschattungsvorrichtung gemäß dem Oberbegriff des Patentanspruches 1 bzw. des Patentanspruches 3. Gewöhnlich befindet sich die Abschattungsvorrichtung im Innenraum des Lampenkolbens einer mit zwei Glühwendeln, nämlich der Abblendlicht- und der Fernlichtglühwendel, ausgestatteten Kraftfahrzeugscheinwerferlampe. Üblicherweise handelt es sich bei der Abschattungsvorrichtung um eine Abblendkappe, die die Abblendlichtglühwendel teilweise umschließt, während die Fernlichtglühwendel außerhalb der Abblendkappe angeordnet ist.The invention relates to a shading device for a motor vehicle headlight lamp and a manufacturing method for a such shading device according to the preamble of the claim 1 or claim 3. Usually located the shading device in the interior of the lamp bulb one with two filaments, namely the low beam and the High-beam incandescent lamp, equipped motor vehicle headlight lamp. The shading device is usually involved around a dimming cap that partially surrounds the low beam filament, while the high-beam filament is outside the anti-glare cap is arranged.

Eine derartige Abschattungsvorrichtung ist beispielsweise in der deutschen Patentschrift DD 224 445 offenbart. Dieses Patent beschreibt eine Zweifaden-Halogenglühlampe mit einer wannenartigen Abblendkappe für die Abblendlichtglühwendel. Die wannenartige Abblendkappe besitzt eine flache, an den Abblendkappenrand angeformte Schweißfahne, die zur Verschweißung mit einem Ende der Abblendlichtglühwendel dient und die außerdem von den Greifwerkzeugen der Bestückungs- und Fertigungsautomaten genutzt wird. Die Schweißfahne ist hier größer als es für diesen Zweck erforderlich wäre, so daß vergleichsweise hohe Materialkosten anfallen. Üblicherweise werden zur Herstellung der Abblendkappen aus einem Blech oder einem Blechstreifen eine Vielzahl von Abblendkappen reihenweise geformt und ausgestanzt. Dabei ist der Abstand zwischen zwei aufeinanderfolgenden Abblendkappen beim Ausstanzen größer als die größte Längenabmessung der Abblendkappe, so daß bei der Herstellung der Abblendkappen ein relativ hoher Anteil des Blechs ungenutzt als Verschnitt zurückbleibt.Such a shading device is for example in the German Patent DD 224 445 discloses. This patent describes a two-filament halogen lamp with a trough-like Dimming cap for the low beam filament. The tub-like Anti-dazzle device has a flat, molded onto the edge of the anti-dazzle device Sweat tab used for welding to one end of the Low beam filament is used and also by the gripping tools the pick and place machines are used. The Sweat plume is larger here than it would be required for this purpose so that comparatively high material costs are incurred. Usually are used to manufacture the anti-dazzle caps from sheet metal or a large number of anti-dazzle caps in a sheet metal strip shaped and punched out. The distance between two consecutive ones Anti-glare caps larger than that when punching out largest length dimension of the anti-dazzle device, so that during manufacture the anti-glare caps a relatively high proportion of the sheet metal is not used remains as a waste.

Es ist die Aufgabe der Erfindung, eine kostengünstige, materialsparende Abschattungsvorrichtung für eine Kraftfahrzeuglampe bereitzustellen und ein Herstellungsverfahren für eine derartige Abschattungsvorrichtung anzugeben.It is the object of the invention to be an inexpensive, material-saving Providing shading device for a motor vehicle lamp and a manufacturing method for such a shading device specify.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale der Patentansprüche 1 bzw. 3 gelöst. Besonders vorteilhafte Ausführungen der Erfindung sind in den Unteransprüchen beschrieben.This object is achieved by the characterizing Features of claims 1 and 3 solved. Particularly advantageous Embodiments of the invention are described in the subclaims.

Bei der erfindungsgemäßen Abschattungsvorrichtung ist die Schweißfahne mit einer Aussparung versehen, deren Gestalt im wesentlichen durch die Form eines der Schweißfahne gegenüberliegenden Wandbereiches der Abschattungsvorrichtung bestimmt ist. Diese Maßnahme erlaubt eine Materialeinsparung von bis zu 15% und senkt daher die Herstellungskosten für die Abschattungsvorrichtung entsprechend, ohne daß dadurch die Funktionstüchtigkeit der Abschattungsvorrichtung beeinträchtigt wird. Außerdem erfordert das Ausstanzen und die Formgebung der erfindungsgemäßen Abschattungsvorrichtung keinen zusätzlichen Arbeitsgang. Vorteilhafterweise ist die für die Abschattung wirksame Fläche der Abschattungsvorrichtung gewölbt und besonders vorteilhaft wannenartig ausgebildet. Dadurch kann die Abschattungsvorrichtung derart angeordnet werden, daß sie den abzuschattenden Leuchtkörper von mehreren Seiten umgibt. Die erfindungsgemäße Abschattungsvorrichtung besitzt außerdem vorteilhafterweise einen im Vergleich zu den übrigen Wandteilen der Abschattungsvorrichtung hochgezogenen, als Abschatternase bezeichneten Wandbereich, der der Schweißfahne gegenüberliegt. Dieser hochgezogene Wandbereich dient zur besseren Abschattung des von der Abschattungsvorrichtung abgeschatteten Leuchtkörpers gegen einen außerhalb der Abschattungsvorrichtung angeordneten zweiten Leuchtkörper. Der Umriß bzw. der Rand der Aussparung in der Schweißfahne besitzt vorteilhafterweise annähernd die gleiche Form wie die auf eine Ebene projizierte Randlinie der Abschatternase. Die Schweißfahne der erfindungsgemäßen Abschattungsvorrichtung ist vorteilhafterweise mit einer Querrippe versehen, die eine Buckelschwetßung mit einem Ende des abgeschatteten Leuchtkörpers ermöglicht. Die Aussparung in der erfindungsgemäßen Abschattungsvorrichtung erstreckt sich dabei vorteilhafterweise vom Rand der Schweißfahne bis zur Querrippe. Die verbleibenden, beidseitig zur Aussparung angeordneten und über die Querrippe hinausragenden Reststege der Schweißfahne genügen als Ansatz für die Greifwerkzeuge der Bestückungs- und Fertigungsautomaten.In the shading device according to the invention Weld flag with a recess, the shape of which is essentially by the shape of one opposite the sweat flag Wall area of the shading device is determined. This Measure allows material savings of up to 15% and therefore lowers the manufacturing cost of the shading device accordingly, without the functionality of the shading device is affected. It also requires that Punching out and shaping the shading device according to the invention no additional work step. Advantageously is the effective area of the shading device for shading curved and particularly advantageously trough-shaped. As a result, the shading device can be arranged in such a way that the lamp to be shaded from several sides surrounds. The shading device according to the invention also has advantageously one in comparison to the other wall parts the shading device pulled up, as shading nose designated wall area, which is opposite the welding lug. This raised wall area serves for better shading of the luminous element shaded by the shading device against one arranged outside the shading device second filament. The outline or the edge of the recess advantageously has approximately in the welding vane same shape as the edge line of the shading nose projected onto a plane. The welding vane of the shading device according to the invention is advantageously provided with a cross rib that a humpback with one end of the shadowed filament enables. The recess in the shading device according to the invention extends advantageously from Edge of the sweat plume up to the cross rib. The remaining, bilateral arranged to the recess and protruding beyond the cross rib Remaining webs of the sweat flag are sufficient as an approach for the Gripping tools of the placement and production machines.

Während des erfindungsgemäßen Fertigungsprozesses werden eine Vielzahl von Abschattungsvorrichtungen reihenweise aus einem Blech geformt und ausgestanzt, wobei der Abstand zweier aufeinanderfolgender Abschattungsvorrichtungen beim Ausstanzen aus dem Blech erfindungsgemäß kleiner als die größte Längenabmessung einer Abschattungsvorrichtung ist. Dabei ist die größte Längenabmessung einer Abschattungsvorrichtung durch die Länge der längsten Seite des Rechtecks mit dem kleinsten Umfang definiert, das die auf eine parallel zur Schweißfahne verlaufende Ebene im Maßstab 1:1 projizierte Randlinie der Abschattungsvorrichtung - inklusive ihrer Schweißfahne - vollständig umhüllt. Beim Ausstanzen der Abschattungsvorrichtungen entsteht in der Schweißfahne jeder Abschattungsvorrichtung eine Aussparung, in die bereits die unmittelbar folgende Abschattungsvorrichtung eingreift. Die Abschatternase der nächstfolgenden Abschattungsvorrichtung wird dabei vorteilhafterweise aus dem aus der Schweißfahne der unmittelbar vorhergehenden Abschattungsvorrichtung ausgestanzten Blechmaterial geformt. Die Form bzw. der Rand der Aussparung in der Schweißfahne ist damit im wesentlichen durch den Umriß der Abschatternase bestimmt.During the manufacturing process according to the invention, a A large number of shading devices in rows from one Sheet formed and punched out, the distance between two successive Shading devices when punching out of the According to the invention, sheet metal is smaller than the largest length dimension of one Shading device is. Here is the largest length dimension a shading device by the length of the longest Side of the rectangle with the smallest perimeter that defines the a plane running parallel to the welding vane on a scale of 1: 1 projected edge line of the shading device - including its Sweat flag - completely covered. When punching out the shading devices arises in the welding vane of each shading device a recess in which the immediately following one already Shading device engages. The shadowing nose of the next shading device is advantageous from that from the sweat vane of the immediately preceding one Shading device shaped stamped sheet material. The shape or the edge of the recess in the welding lug is essentially determined by the outline of the shading nose.

Nachstehend wird die Erfindung anhand eines bevorzugten Ausführungsbeispiels näher erläutert. Es zeigen:

Figur 1
Eine Draufsicht auf das bevorzugte Ausführungsbeispiel der erfindungsgemäßen Abschattungsvorrichtung
Figur 2
Eine geschnittene Seitenansicht der in Figur 1 abgebildeten Abschattungsvorrichtung
Figur 3
Eine Frontansicht der in Figur 1 abgebildeten Abschattungsvorrichtung
Figur 4
Eine Draufsicht (schematisch) auf einen Blechstreifen mit mehreren ausgestanzten Abschattungsvorrichtungen gemäß des bevorzugten Ausführungsbeispiels
The invention is explained in more detail below on the basis of a preferred exemplary embodiment. Show it:
Figure 1
A top view of the preferred embodiment of the shading device according to the invention
Figure 2
A sectional side view of the shading device shown in Figure 1
Figure 3
A front view of the shading device shown in Figure 1
Figure 4
A top view (schematic) of a sheet metal strip with several punched shading devices according to the preferred embodiment

Bei dem in den Figuren 1 bis 3 abgebildeten bevorzugten Ausführungsbeispiel der erfindungsgemäßen Abschattungsvorrichtung handelt es sich um eine aus Molybdän bestehende Abblendkappe 1 für eine Kraftfahrzeugscheinwerferlampe, insbesondere für eine Zweifaden-Halogenglühlampe. Derartige Lampen sind unter der Bezeichnung H4-Lampe im Handel erhältlich. In the preferred embodiment shown in FIGS. 1 to 3 the shading device according to the invention it is a molybdenum anti-dazzle device 1 for a motor vehicle headlight lamp, in particular for a two-filament halogen lamp. Such lamps are under the name H4 lamp commercially available.

Die Abblendkappe 1 des bevorzugten Ausführungsbeispiels der Erfindung ist wannenartig ausgebildet. Sie besitzt einen im wesentlichen flachen, mit zwei Schweißwülsten 2a versehenen Boden 2. Die Abblendkappe weist ferner eine an ihrem Rand angeformte, im wesentlichen flache Schweißfahne 3 auf. Der der Schweißfahne 3 gegenüberliegende Wandbereich 4a der Abblendkappe 1 ist im Vergleich zu den übrigen Wandbereichen 4b der Abblendkappe 1 hochgezogen und formt die sogenannte Abschatternase 4a, die die Abblendlicht- und Fernlichtglühwendel (nicht abgebildet) gegeneinander abschattet. Die für die Abschattung der Abblendlichtglühwendel wirksame Fläche wird von dem Boden 2 und den gewölbten Wandbereichen 4a, 4b der Abblendkappe 1 gebildet. Sieht man von der Schweißfahne 3 und den Schweißwülsten 2a ab, dann erinnert die Form der Abblendkappe 1 an den Rumpf eines Bootes. In diesem Vergleich wäre die Schweißfahne 3 an das Heck des Rumpfes angeformt und die Abschatternase 4a würde den hochgezogenen Bug des Rumpfes bilden. Die Abblendkappe 1 ist spiegelsymmetrisch bezüglich der mittig, senkrecht zum Boden 2 und in Längsrichtung durch die Abblendkappe 1 verlaufenden Spiegelebene A-A.The anti-dazzle device 1 of the preferred embodiment of the invention is designed like a tub. It essentially has one flat bottom provided with two welding beads 2a Anti-dazzle device also has an essentially integrally formed on its edge flat sweat 3 on. The opposite of the sweat 3 Wall area 4a of anti-dazzle device 1 is compared pulled up to the remaining wall areas 4b of the anti-dazzle device 1 and forms the so-called shading nose 4a, which the low beam and high beam filament (not shown) shadows against each other. The area effective for shading the low beam filament is of the bottom 2 and the curved wall areas 4a, 4b Anti-dazzle device 1 is formed. You can see from the sweat 3 and the Weld beads 2a, then the shape of the anti-dazzle device 1 to the hull of a boat. In this comparison, the sweat flag would be 3 molded to the stern of the fuselage and the shading nose 4a would form the raised bow of the fuselage. The anti-glare cap 1 is mirror-symmetrical with respect to the center, perpendicular to Bottom 2 and in the longitudinal direction through the anti-dazzle device 1 Mirror level A-A.

Die an den Rand der für die Abschattung wirksamen Fläche 2, 4a, 4b angeformte Schweißfahne 3 ist mit einer Querrippe 3a ausgestattet, die zur Buckelverschweißung mit einem Ende der Abblendlichtglühwendel dient. Außerdem weist die Schweißfahne 3 eine Aussparung 5 auf, die sich vom Rand der Schweißfahne 3 bis zur Querrippe 3a erstreckt. Der Rand der Aussparung 5 der Schweißfahne 3 besitzt annähernd die gleiche Form bzw. Kontur wie die auf eine Ebene projizierte Randlinie 6 der Abschatternase 4a der Abblendkappe 1. Zu beiden Seiten der Aussparung 5 verbleibt jeweils ein über die Querrippe 3a hinausragender und zur Schweißfahne 3 gehörender Steg 7a, 7b. Diese Stege 7a, 7b genügen als Ansatz für die Greifwerkzeuge der Bestückungs- und Fertigungsautomaten. Die größte Längenabmessung der Abblendkappe 1, in Längsrichtung von der Abschatternase 4a bis zur senkrecht zur Spiegelebene A-A verlaufenden Außenkante der Stege 7a, 7b gemessen, mißt 12,7 mm. Die maximale Tiefe der Aussparung 5 beträgt 1,7 mm. Die Tiefe der wannenartigen Abblendkappe 1 beträgt, ohne Berücksichtigung der Schweißwülste 2a, ungefähr 2,7 mm. Die maximale Höhe der Abschatternase 4a beträgt vom Boden 2 aus gemessen ca. 4,1 mm. Damit überragt die Abschatternase 4a die übrigen Wandbereiche 4b in der Höhe um ca. 1,4 mm.The edge 2, 4a, 4b effective for shading molded welding lug 3 is equipped with a transverse rib 3a, that for hump welding with one end of the low beam filament serves. In addition, the welding lug 3 has a cutout 5 on, which extends from the edge of the welding lug 3 to the transverse rib 3a. The edge of the recess 5 of the welding vane 3 has approximately the same shape or contour as that projected onto a plane Edge line 6 of the shading nose 4a of the anti-dazzle device 1. Zu Both sides of the recess 5 each remain on the cross rib 3a protruding and belonging to the welding flag 3 7a, 7b. These webs 7a, 7b are sufficient as an approach for the gripping tools the assembly and production machines. The largest length dimension the anti-dazzle device 1, in the longitudinal direction of the shading nose 4a to the outer edge running perpendicular to the mirror plane A-A the webs 7a, 7b measured 12.7 mm. The maximum depth the recess 5 is 1.7 mm. The depth of the tub-like anti-dazzle device 1, without considering the welding beads 2a, about 2.7 mm. The maximum height of the shading nose 4a is Measured from floor 2 approx. 4.1 mm. The shading nose looms over it 4a the remaining wall areas 4b in height by approximately 1.4 mm.

Die erfindungsgemäßen Abblendkappen 1, 1', 1" werden reihenweise, in gleicher Orientierung aus einem Molybdänblechstreifen 8 im gleichen Arbeitsgang geformt und ausgestanzt (Fig. 4). Dabei ist der Abstand zweier unmittelbar aufeinanderfolgender Abblendkappen 1, 1' bzw. 1', 1" kleiner als die größte Längenabmessung einer Abblendkappe 1, 1', 1". Beim Ausstanzen entsteht in der Schweißfahne 3, 3' jeder Abblendkappe 1, 1' eine Aussparung 5, 5', in die bereits die unmittelbar folgende Abblendkappe 1', 1" eingreift. Die Abschatternase 4a', 4a" der nächstfolgenden Abblendkappe 1', 1" wird dabei aus dem aus der Schweißfahne 3, 3' der unmittelbar vorhergehenden Abblendkappe 1, 1' ausgestanzten Blechmaterial geformt. Die Form der Aussparung 5, 5' in der Schweißfahne 3, 3' ist damit durch den Rand der Abschatternase 4a', 4a" bestimmt. Alle Abblendkappen 1, 1', 1" sind identisch geformt. Der Rand der Aussparung 5 in der Schweißfahne 3 besitzt daher näherungsweise die gleiche Form wie die auf eine Ebene projizierte Randlinie 6 der Abschatternase 4a der Abblendkappe 1. Die Übereinstimmung gilt nur näherungsweise, weil die Abschatternase 4a während des Stanzprozesses gleichzeitig auch einem Formgebungsprozeß unterworfen wird. The anti-dazzle caps 1, 1 ', 1 "according to the invention are in the same orientation from a molybdenum sheet strip 8 in the same Working step shaped and punched out (Fig. 4). Here is the distance two immediately successive anti-dazzle devices 1, 1 ' or 1 ', 1 "smaller than the largest length dimension of a dimming cap 1, 1 ', 1 ". When punching out, the welding lug 3, 3' each anti-dazzle device 1, 1 'has a recess 5, 5' into which the immediately engages the following anti-dazzle cap 1 ', 1 ". The shading nose 4a ', 4a "of the next anti-dazzle device 1', 1" is thereby made that from the welding lug 3, 3 'of the immediately preceding one Anti-dazzle device 1, 1 'formed from stamped sheet metal material. Form the recess 5, 5 'in the welding lug 3, 3' is thus through Edge of the shading nose 4a ', 4a ". All anti-dazzle caps 1, 1 ', 1 "are shaped identically. The edge of the recess 5 in the Welding vane 3 therefore has approximately the same shape as the edge line 6 of the shading nose 4a projected onto a plane Dimming cap 1. The agreement is only approximate because the shading nose 4a at the same time during the stamping process is subjected to a shaping process.

Die Erfindung beschränkt sich nicht auf das oben näher erläuterte Ausführungsbeispiel.The invention is not limited to that explained in more detail above Embodiment.

Claims (8)

  1. Method for producing a shading device for a motor vehicle headlamp, for shading a filament of the motor vehicle headlamp, the shading device (1) having a welding lug (3, 3') which is integrally formed on the edge of the area (2, 4a, 4b), effective for shading, of the shading device, a multiplicity of shading devices (1, 1', 1") being shaped and blanked from a metal sheet (8) in a row, characterized in that during blanking from the metal sheet (8) the distance between similar regions or parts of two successive shading devices (1, 1', 1") is smaller than the largest linear dimension of a shading device (1, 1', 1").
  2. Method according to Claim 1, characterized in that the wall region (4a', 4a"), opposite the welding lug (3', 3"), of a shading device (1', 1") is shaped from the sheet-metal material blanked from the welding lug (3, 3') of a neighbouring shading device (1, 1').
  3. Shading device for a motor vehicle headlamp, for shading a filament of the motor vehicle headlamp, produced using the method according to Claim 1, the shading device (1) comprising a sheet-metal part and having a welding lug (3) which is integrally formed on the edge of the area (2, 4a, 4b) of the shading device (1) which is effective for shading, and the welding lug (3) has a cutout (5) whose shape is determined by the shape, of a wall region (4a) of the shading device (1) which is opposite the welding lug (3).
  4. Shading device according to Claim 3, characterized in that the area (2, 4a, 4b) of the shading device (1) which is effective for shading is domed.
  5. Shading device according to Claim 4, characterized in that the area (2, 4a, 4b) of the shading device (1) which is effective for shading is of trough-like design.
  6. Shading device according to Claim 5, characterized in that the shading device (1) has a wall region (4a) which is drawn up by comparison with the remaining wall parts (4b) of the shading device (1) and is situated opposite the welding lug (3).
  7. Shading device according to Claim 3, characterized in that the edge of the cutout (5) has essentially the same shape as the edge line (6), projected onto a plane, of a wall region (4a) of the shading device (1) which is opposite the welding lug (3).
  8. Shading device according to Claim 3, characterized in that the welding lug (3) is fitted with a transverse rib (3a) provided for projection welding, and the cutout (5) extends from the edge of the welding lug (3) up to the transverse rib (3a).
EP97925900A 1996-06-20 1997-06-04 Screening device for a motor vehicle headlamp and process for manufacturing the same Expired - Lifetime EP0845152B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19624688A DE19624688A1 (en) 1996-06-20 1996-06-20 Shading device for a motor vehicle headlight lamp and manufacturing method for such a shading device
DE19624688 1996-06-20
PCT/DE1997/001123 WO1997049117A1 (en) 1996-06-20 1997-06-04 Screening device for a motor vehicle headlamp and process for manufacturing the same

Publications (2)

Publication Number Publication Date
EP0845152A1 EP0845152A1 (en) 1998-06-03
EP0845152B1 true EP0845152B1 (en) 2000-10-18

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Application Number Title Priority Date Filing Date
EP97925900A Expired - Lifetime EP0845152B1 (en) 1996-06-20 1997-06-04 Screening device for a motor vehicle headlamp and process for manufacturing the same

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EP (1) EP0845152B1 (en)
JP (1) JPH11511896A (en)
KR (1) KR100292449B1 (en)
CN (1) CN1106672C (en)
AT (1) ATE197103T1 (en)
BR (1) BR9706545A (en)
DE (2) DE19624688A1 (en)
ES (1) ES2152094T3 (en)
HU (1) HU220312B (en)
TW (1) TW458239U (en)
WO (1) WO1997049117A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015207019A1 (en) * 2015-04-17 2016-10-20 Osram Gmbh Motor vehicle headlight lamp

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Publication number Priority date Publication date Assignee Title
US5256493A (en) * 1990-04-26 1993-10-26 Szita Jeno G Sulfonimide catalysts for coatings
DE102006060029A1 (en) * 2006-12-19 2008-06-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Dimming cap with helix
DE102006060772A1 (en) * 2006-12-21 2008-06-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Dimming cap for two-coil halogen lamp of different power for increasing the useful light
CN106090776B (en) * 2016-07-22 2019-06-11 张德祥 A kind of motorcycle front lamp

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Publication number Priority date Publication date Assignee Title
BE406227A (en) * 1933-11-17
NL292761A (en) * 1962-05-16
GB1430070A (en) * 1972-08-11 1976-03-31 Thorn Electrical Ind Ltd Manufacture of electrical devices having sealed envelopes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015207019A1 (en) * 2015-04-17 2016-10-20 Osram Gmbh Motor vehicle headlight lamp

Also Published As

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DE59702494D1 (en) 2000-11-23
WO1997049117A1 (en) 1997-12-24
CN1196825A (en) 1998-10-21
HU220312B (en) 2001-12-28
TW458239U (en) 2001-10-01
HUP9901388A3 (en) 1999-11-29
KR19990037699A (en) 1999-05-25
DE19624688A1 (en) 1998-01-02
ES2152094T3 (en) 2001-01-16
BR9706545A (en) 1999-07-20
EP0845152A1 (en) 1998-06-03
ATE197103T1 (en) 2000-11-15
HUP9901388A2 (en) 1999-08-30
CN1106672C (en) 2003-04-23
KR100292449B1 (en) 2001-08-07
JPH11511896A (en) 1999-10-12

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