EP0306687B1 - Headlamp for a motor vehicle - Google Patents

Headlamp for a motor vehicle Download PDF

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Publication number
EP0306687B1
EP0306687B1 EP88112195A EP88112195A EP0306687B1 EP 0306687 B1 EP0306687 B1 EP 0306687B1 EP 88112195 A EP88112195 A EP 88112195A EP 88112195 A EP88112195 A EP 88112195A EP 0306687 B1 EP0306687 B1 EP 0306687B1
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EP
European Patent Office
Prior art keywords
retaining spring
pocket
bulb
headlamp according
legs
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
Application number
EP88112195A
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German (de)
French (fr)
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EP0306687A3 (en
EP0306687A2 (en
Inventor
Hans Georg Dipl.-Ing. Stens
Herbert Dipl.-Ing. Cramer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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Publication date
Application filed by Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP0306687A2 publication Critical patent/EP0306687A2/en
Publication of EP0306687A3 publication Critical patent/EP0306687A3/en
Application granted granted Critical
Publication of EP0306687B1 publication Critical patent/EP0306687B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/196—Wire spring attachments

Definitions

  • the invention relates to a motor vehicle headlight with an annular light bulb holder in the central opening of which a light bulb is inserted from the rear of the headlight, with a U-shaped retaining spring made of spring wire, which with the web connecting the legs of its U-shape between at least one in the direction of insertion of the incandescent lamp open bearing surface and at least one nose of the incandescent lamp holder pointing towards an incandescent lamp base is rotatably mounted about the longitudinal axis of the web between two end positions and in an end position with the free end section of at least one leg engages behind an undercut of the incandescent lamp holder and thereby with both legs presses a base flange of the incandescent lamp against an edge region of the opening of the incandescent lamp holder and bears against a stop of the incandescent lamp holder in the other end position.
  • FIG. 1 and Figure 2 of the drawing Such a known headlight for vehicles is shown in Figure 1 and Figure 2 of the drawing.
  • the incandescent lamp holder attached to the reflector (not shown) is sleeve-shaped and manufactured by injection molding or die casting.
  • the incandescent lamp is inserted from the rear of the headlight into a central opening in the base of the incandescent lamp holder and, with its flange, lies against the floor area surrounding the opening.
  • On the opposite side of the flange facing the direction of insertion of the bulb one leg of the U-shaped retaining spring made of spring wire bears against each other on opposite sides under pretension.
  • One leg of the U-shaped retaining spring is longer and engages with its free end portion behind the edge of an opening of the bulb holder.
  • the web connecting the legs of the retaining spring is arranged in a cross-sectionally U-shaped projection of the incandescent lamp holder, the U-shape of which opens towards the base.
  • the facing inner surfaces of the U-shaped projection each have a step, the abutting surface facing the direction of insertion of the incandescent lamp serves as a bearing surface for the web of the retaining spring connecting the legs.
  • a hook-shaped nose is formed on the U-shaped shoulder in the middle between the two bearing surfaces and forms the counter bearing for the retaining spring. The hook-shaped nose is so long in the light exit direction of the headlight that the retaining spring is held securely in its pivot bearing.
  • the retaining spring When inserting the retaining spring, its legs must be pressed together by hand so far that the web connecting the legs describes such an arc until it reaches under the nose. Such an assembly is very cumbersome and time consuming. Therefore, the retaining spring can only be assembled simply and easily by hand and not in mass production.
  • the U-shaped retaining spring When the U-shaped retaining spring is inserted, its legs are approximately radial to the axis of the incandescent lamp, point outwards and are rotated by an angle of 180 ° with respect to their end position. In this position, the retaining spring is fed to the swivel bearing by hand or automatically until its web rests on the bearing surface. The retaining spring is then pivoted into its end position about the pivot axis.
  • the bulge is introduced centrally into the web of the retaining spring connecting the legs, and the sections of the web adjoining the bulge are in each case in contact with a bearing surface of the incandescent lamp holder.
  • a bulge is introduced into the web of the holding spring adjacent to the legs of the holding spring, and the middle portion of the web lies against a bearing surface of the incandescent lamp holder.
  • the nose has such a size and shape that it projects into the bulge of the web of the retaining spring in any position of the desired pivoting range of the retaining spring and projects beyond it and the bearing surface of the bulb holder for the retaining spring a slit opening across the back of the headlamp is formed.
  • the retaining spring can be pivoted smoothly and smoothly in both embodiments.
  • a further advantage is that of the bulge in the desired pivoting range of the retaining spring Underneath section of the nose is formed by a cylindrical outer surface section running approximately concentrically to the pivot axis of the retaining spring, the radius of which corresponds approximately to the depth of the bulge and the width of the nose approximately corresponds to the width of the bulge.
  • the side surface facing away from the incandescent lamp base is made higher from the side surfaces of the slots, in which the retaining spring is rotatably mounted.
  • the higher side surfaces serve as a stop for the web connecting the two legs.
  • a wall extends radially outward from the top of the nose, the end face of which merges into a run-up slope for the bulge of the retaining spring.
  • the retaining spring has such a position when it is inserted that the wall connected to the nose is arranged in the bulge and thus serves as a guide for the retaining spring.
  • the known incandescent lamp holder (1 ') shown in Figure 1 and Figure 2 is sleeve-shaped and made of die-cast.
  • the bulb (2 ') with its glass bulb is inserted from the rear of the bulb holder into the central opening (3') of the base of the bulb holder until the flange (4 ') surrounding the bulb base on the one surrounding the opening (3') Floor area rests.
  • a U-shaped retaining spring (5 ') made of spring wire rests on opposite sides of the flange (4') under prestress.
  • the web (7 ') connecting the legs (6') of the U-shaped retaining spring is mounted on the incandescent lamp holder (1 ') so as to be pivotable about the pivot axis.
  • the swivel bearing is formed by a hook-shaped nose (8 ') which opens in the light exit direction and by two bearing surfaces (9') which are open in the direction of insertion of the incandescent lamp.
  • the web (7 ') of the U-shaped retaining spring (5') lies on the two bearing surfaces (9 ') with one end section each.
  • the two bearing surfaces (9 ') are each formed by an abutting surface of a step of opposing walls (10') and extend at an acute angle to the main extension of the retaining spring (5 ').
  • the hook-shaped nose (8 ') is so long that the web (7') connecting the legs (6 ') of the U-shaped retaining spring (5') only then between the nose (8 ') and the two bearing surfaces (9 ') can be used if the two legs (6') of the U-shaped retaining spring (5 ') are pressed together and the web (7') bends sufficiently large until it reaches under the nose.
  • One of the two legs (6 ') of the U-shaped retaining spring (5 ') is longer and engages behind the edge of an opening of the incandescent lamp holder (1') with an angled end section (11 ').
  • the U-shaped retaining spring (5) has a bulge in the middle of its web (7) connecting the two legs (6), which bulge opens towards the base of the incandescent lamp (2).
  • the bulge (15, 16) is U-shaped. Adjacent to this U-shaped section (15, 16) of the retaining spring, the web (7) bears against two bearing surfaces (9) which are formed by slots in the incandescent lamp holder (1) which open towards the rear of the headlight. A nose (8) pointing towards the bulb base is arranged between these slots.
  • the nose (8) has a cylindrical lateral surface section (14) which runs concentrically to the swivel axis and partly faces the light exit opening of the headlight.
  • the radius of the cylindrical lateral surface section (14) corresponds approximately to the distance from the pivot axis (12) to the inside of the web (15) of the U-shaped section of the retaining spring (5).
  • the thickness of the nose (8) corresponds approximately to the distance between the two legs (16) of the U-shaped section of the retaining spring (5).
  • a shoulder (17) serving as a stop is molded onto the cylindrical lateral surface section, which is a stop and a latching device for the retaining spring (5).
  • the web (7) connecting the legs (6) of the U-shaped retaining spring (5) is arranged between two walls (19) running transversely to it.
  • the wall (22) connected to the nose (8) has the run-on slope (23) on the side facing away from the incandescent lamp.
  • the web (7) then lies against the bearing surfaces (9) and the nose (8) protrudes into the U-shaped section of the retaining spring (5) (see FIG. 5). Then the holding spring (5) is pivoted in the direction (25) about the pivot axis (12) until the web (15) of the U-shaped section of the holding spring (5) serves as a stop (17) of the nose (8). engages behind. As a result, the retaining spring (5) is held captively in the pivot bearing. After the retaining spring (5) has engaged, the legs of the retaining spring run approximately parallel to the axis of the incandescent lamp. Thus, the retaining spring does not prevent the bulb from being changed. In the fastening position of the retaining spring (5), the end sections (11) of the leg (6) bent into eyelets engage behind the hook-shaped undercuts (26) of the incandescent lamp holder (1).

Description

Die Erfindung bezieht sich auf einen Kraftfahrzeugscheinwerfer mit einem ringförmigen Glühlampenhalter in dessen zentrale öffnung von der Rückseite des Scheinwerfers her eine Glühlampe eingesetzt ist, mit einer aus Federdraht hergestellten U-förmigen Haltefeder, welche mit dem die Schenkel verbindenden Steg ihrer U-Form zwischen mindestens einer in Einsetzrichtung der Glühlampe offenen Lagerfläche und mindestens einer zu einem Glühlampensockel hin weisenden Nase des Glühlampenhalters um die Längsachse des Stegs zwischen zwei Endstellungen verdrehbar gelagert ist und in einer Endstellung mit dem freien Endabschnitt mindestens eines Schenkels eine Hinterschneidung des Glühlampenhalters hintergreift und dabei mit ihren beiden Schenkeln einen Sockelflansch der Glühlampe gegen einen Randbereich der Öffnung des Glühlampenhalters drückt und in der anderen Endstellung an einem Anschlag des Glühlampenhalters anliegt.The invention relates to a motor vehicle headlight with an annular light bulb holder in the central opening of which a light bulb is inserted from the rear of the headlight, with a U-shaped retaining spring made of spring wire, which with the web connecting the legs of its U-shape between at least one in the direction of insertion of the incandescent lamp open bearing surface and at least one nose of the incandescent lamp holder pointing towards an incandescent lamp base is rotatably mounted about the longitudinal axis of the web between two end positions and in an end position with the free end section of at least one leg engages behind an undercut of the incandescent lamp holder and thereby with both legs presses a base flange of the incandescent lamp against an edge region of the opening of the incandescent lamp holder and bears against a stop of the incandescent lamp holder in the other end position.

Ein solcher bekannter Scheinwerfer für Fahrzeuge ist in Figur 1 und Figur 2 der Zeichnung dargestellt. Der am Reflektor (nicht dargestellt) befestigte Glühlampenhalter ist hülsenförmig ausgeführt und im Spritzgieß- bzw. Druckgußverfahren hergestellt. Die Glühlampe ist von der Rückseite des Scheinwerfers her in eine zentrale Öffnung des Bodens des Glühlampenhalters eingesetzt und liegt mit ihrem Flansch an dem die Öffnung umgebenden Bodenbereich an. An der entgegen der Einsetzrichtung der Glühlampe weisenden Seite des Flansches liegt auf sich gegenüberliegenden Seiten jeweils ein Schenkel der U-förmig gebogenen und aus Federdraht hergestellten Haltefeder unter Vorspannung an. Ein Schenkel der U-förmigen Haltefeder ist länger ausgeführt und hintergreift mit seinem freien Endabschnitt den Rand einer Öffnung des Glühlampenhalters.Such a known headlight for vehicles is shown in Figure 1 and Figure 2 of the drawing. The incandescent lamp holder attached to the reflector (not shown) is sleeve-shaped and manufactured by injection molding or die casting. The incandescent lamp is inserted from the rear of the headlight into a central opening in the base of the incandescent lamp holder and, with its flange, lies against the floor area surrounding the opening. On the opposite side of the flange facing the direction of insertion of the bulb, one leg of the U-shaped retaining spring made of spring wire bears against each other on opposite sides under pretension. One leg of the U-shaped retaining spring is longer and engages with its free end portion behind the edge of an opening of the bulb holder.

Der die Schenkel verbindende Steg der Haltefeder ist in einem im Querschnitt U-förmigen Ansatz des Glühlampenhalters angeordnet, dessen U-Form sich zum Sockel hin öffnet. Die sich zugewandten Innenflächen des U-förmigen Ansatzes weisen jeweils eine Stufe auf, deren entgegen der Einsetzrichtung der Glühlampe weisende Stoßfläche als Lagerfläche für den die Schenkel verbindenden Steg der Haltefeder dient. Mittig zwischen den beiden Lagerflächen ist an den U-förmigen Ansatz eine hakenförmige Nase angeformt, die das Gegenlager für die Haltefeder bildet. Die hakenförmige Nase ist in Lichtaustrittsrichtung des Scheinwerfers gesehen so lang ausgeführt, daß die Haltefeder in ihrem Schwenklager sicher gehalten ist. Beim Einsetzen der Haltefeder müssen ihre Schenkel von Hand so weit zusammengedrückt werden, daß der die Schenkel verbindende Steg einen solchen Bogen beschreibt, bis er unter die Nase reicht. Eine solche Montage ist sehr umständlich und zeitaufwendig. Deshalb kann die Haltefeder nur einfach und leicht von Hand und nicht in der Massenfertigung montiert werden.The web connecting the legs of the retaining spring is arranged in a cross-sectionally U-shaped projection of the incandescent lamp holder, the U-shape of which opens towards the base. The facing inner surfaces of the U-shaped projection each have a step, the abutting surface facing the direction of insertion of the incandescent lamp serves as a bearing surface for the web of the retaining spring connecting the legs. A hook-shaped nose is formed on the U-shaped shoulder in the middle between the two bearing surfaces and forms the counter bearing for the retaining spring. The hook-shaped nose is so long in the light exit direction of the headlight that the retaining spring is held securely in its pivot bearing. When inserting the retaining spring, its legs must be pressed together by hand so far that the web connecting the legs describes such an arc until it reaches under the nose. Such an assembly is very cumbersome and time consuming. Therefore, the retaining spring can only be assembled simply and easily by hand and not in mass production.

Aufgabe der Erfindung ist es, das Schwenklager des Glühlampenhalters und die Haltefeder des im Gattungsbegriff beschriebenen Scheinwerfers derart zu verbessern, daß die Haltefeder sich sowohl von Hand als auch automatisch einfach und schnell montieren läßt. Dabei soll weiterhin durch die Haltefeder die Glühlampe sicher in dem Glühlampenhalter festsetzbar sein und die Haltefeder und der Glühlampenhalter kostengünstig herstellbar sein. Diese Aufgabe wird nach der Erfindung durch folgende Merkmale gelöst:

  • der die Schenkel verbindendende Steg der Haltefeder weist mindestens eine entgegengesetzt der Schenkel der Haltefeder gerichtete Ausbuchtung auf,
  • die Ausbuchtung ist in Größe und Form derart gestaltet, daß sie beim Einschwenken in ihre Befestigungsposition die Nase untergreift.
The object of the invention is to improve the pivot bearing of the incandescent lamp holder and the retaining spring of the headlamp described in the generic term in such a way that the retaining spring can be easily and quickly installed both by hand and automatically. It should continue to be securely fixable in the bulb holder by the retaining spring and the retaining spring and the bulb holder should be inexpensive to manufacture. This object is achieved according to the invention by the following features:
  • the web of the retaining spring connecting the legs has at least one bulge directed opposite the leg of the retaining spring,
  • the bulge is designed in size and shape in such a way that it swings into its fastening position under the nose.

Beim Einsetzen der U-förmigen Haltefeder stehen ihre Schenkel etwa radial zur Glühlampenachse, weisen nach außen und sind gegenüber ihrer Endlage um einen Winkel von 180° gedreht. In dieser Lage wird die Haltefeder dem Schwenklager von Hand oder automatisch zugeführt, bis ihr Steg an der Lagerfläche anliegt. Danach wird die Haltefeder um die Schwenkachse in ihre Endlage geschwenkt.When the U-shaped retaining spring is inserted, its legs are approximately radial to the axis of the incandescent lamp, point outwards and are rotated by an angle of 180 ° with respect to their end position. In this position, the retaining spring is fed to the swivel bearing by hand or automatically until its web rests on the bearing surface. The retaining spring is then pivoted into its end position about the pivot axis.

Bei einer vorteilhaften Weiterbildung der Erfindung ist die Ausbuchtung mittig in den die Schenkel verbindenden Steg der Haltefeder eingebracht, und die an die Ausbuchtung angrenzenden Abschnitte des Stegs liegen an jeweils einer Lagerfläche des Glühlampenhalters an. Bei einer anderen vorteilhaften Weiterbildung ist angrenzend an die Schenkel der Haltefeder jeweils eine Ausbuchtung in den Steg der Haltefeder eingebracht, und der Steg liegt mit seinem mittleren Abschnitt an einer Lagerfläche des Glühlampenhalters an. Bei den beiden möglichen Ausführungsformen ist es weiterhin vorteilhaft, wenn die Nase eine solche Größe und Form aufweist, daß sie in jeder Stellung des gewünschten Schwenkbereichs der Haltefeder in die Ausbuchtung des Stegs der Haltefeder hineinragt und diese überragt und die Lagerfläche des Glühlampenhalters für die Haltefeder von einem quer zur Rückseite des Scheinwerfers hin sich öffnenden Schlitz gebildet wird. Dadurch kann bei beiden Ausführungsformen die Haltefeder leichtgängig und ruckfrei verschwenkt werden.In an advantageous development of the invention, the bulge is introduced centrally into the web of the retaining spring connecting the legs, and the sections of the web adjoining the bulge are in each case in contact with a bearing surface of the incandescent lamp holder. In another advantageous development, a bulge is introduced into the web of the holding spring adjacent to the legs of the holding spring, and the middle portion of the web lies against a bearing surface of the incandescent lamp holder. In the two possible embodiments, it is also advantageous if the nose has such a size and shape that it projects into the bulge of the web of the retaining spring in any position of the desired pivoting range of the retaining spring and projects beyond it and the bearing surface of the bulb holder for the retaining spring a slit opening across the back of the headlamp is formed. As a result, the retaining spring can be pivoted smoothly and smoothly in both embodiments.

Ein weiterer Vorteil ist es, wenn der von der Ausbuchtung in dem gewünschten Schwenkbereich der Haltefeder untergriffene Abschnitt der Nase von einem etwa konzentrisch zur Schwenkachse der Haltefeder verlaufenden zylinderförmigen Mantelflächenabschnitt gebildet wird, dessen Radius etwa der Tiefe der Ausbuchtung entspricht und die Breite der Nase etwa der Breite der Ausbuchtung entspricht. Dadurch ist die Haltefeder am Schwenklager mit sehr kleinem Spiel verdrehbar gehalten.A further advantage is that of the bulge in the desired pivoting range of the retaining spring Underneath section of the nose is formed by a cylindrical outer surface section running approximately concentrically to the pivot axis of the retaining spring, the radius of which corresponds approximately to the depth of the bulge and the width of the nose approximately corresponds to the width of the bulge. As a result, the retaining spring on the pivot bearing is rotatably held with very little play.

Außerdem ist es vorteilhaft, wenn von den sich zugewandten Seitenflächen der Schlitze, in denen die Haltefeder verdrehbar gelagert ist, die dem Glühlampensockel abgewandte Seitenfläche höher ausgeführt ist. Bei der Montage der Haltefeder dienen die höheren Seitenflächen als Anschlag für den die beiden Schenkel verbindenden Steg.In addition, it is advantageous if the side surface facing away from the incandescent lamp base is made higher from the side surfaces of the slots, in which the retaining spring is rotatably mounted. When mounting the retaining spring, the higher side surfaces serve as a stop for the web connecting the two legs.

Ferner ist es vorteilhaft, wenn von der Oberseite der Nase aus eine Wandung radial nach außen verläuft, deren Stirnfläche in eine Auflaufschräge für die Ausbuchtung der Haltefeder übergeht. Hierbei weist die Haltefeder bei ihrem Einsetzen eine solche Lage auf, daß die mit der Nase verbundene Wandung in der Ausbuchtung angeordnet ist und somit als Führung für die Haltefeder dient.It is also advantageous if a wall extends radially outward from the top of the nose, the end face of which merges into a run-up slope for the bulge of the retaining spring. Here, the retaining spring has such a position when it is inserted that the wall connected to the nose is arranged in the bulge and thus serves as a guide for the retaining spring.

In den Patentansprüchen 10 bis 14 sind weitere zweckmäßige Ausführungsformen gemäß der Erfindung erläutert.Further expedient embodiments according to the invention are explained in patent claims 10 to 14.

In der Zeichnung ist ein bekannter Scheinwerfer für Fahrzeuge, der bei der Bildung des Oberbegriffs herangezogen wurde, und die Erfindung dargestellt.

  • Figur 1 zeigt einen Schnitt nach der Linie A-A durch den Glühlampenhalter des bekannten Scheinwerfers und
  • Figur 2 zeigt eine Draufsicht auf den bekannten Glühlampenhalter, während
  • Figur 3 einen Schnitt nach der Linie B-B durch den Glühlampenhalter nach der Erfindung,
  • Figur 4 eine Draufsicht auf den Glühlampenhalter nach der Erfindung,
  • Figur 5 eine Draufsicht auf den Glühlampenhalter mit einer Haltefeder vor ihrem Einschwenken und
  • Figur 6 einen Schnitt nach der Linie C-C durch das Schwenklager des Glühlampenhalters darstellen.
In the drawing, a known headlight for vehicles, which was used in the formation of the preamble, and the invention is shown.
  • Figure 1 shows a section along the line AA through the bulb holder of the known headlamp and
  • Figure 2 shows a top view of the known incandescent lamp holder, while
  • FIG. 3 shows a section along line BB through the incandescent lamp holder according to the invention,
  • FIG. 4 shows a plan view of the incandescent lamp holder according to the invention,
  • Figure 5 is a plan view of the light bulb holder with a retaining spring before it is pivoted in and
  • Figure 6 shows a section along the line CC through the pivot bearing of the bulb holder.

Der in Figur 1 und Figur 2 dargestellte bekannte Glühlampenhalter (1') ist hülsenförmig und aus Druckguß hergestellt. Die Glühlampe (2') ist mit ihrem Glaskolben voraus von der Rückseite des Glühlampenhalters her in die zentrale Öffnung (3') des Bodens des Glühlampenhalters eingeführt, bis der den Glühlampensockel umgebende Flansch (4') an dem die Öffnung (3') umgebenden Bodenbereich anliegt. Auf sich gegenüberliegenden Seiten des Flansches (4') liegt eine aus Federdraht bestehende U-förmige Haltefeder (5') unter Vorspannung an. Der die Schenkel (6') der U-förmigen Haltefeder verbindende Steg (7') ist um die Schwenkachse verschwenkbar an dem Glühlampenhalter (1') gelagert. Das Schwenklager wird von einer hakenförmigen, in Lichtaustrittsrichtung sich öffnenden Nase (8') und von zwei in Einsetzrichtung der Glühlampe offenen Lagerflächen (9') gebildet. An den beiden Lagerflächen (9') liegt der Steg (7') der U-förmigen Haltefeder (5') jeweils mit einem Endabschnitt an. Die beiden Lagerflächen (9') werden von jeweils einer Stoßfläche einer Stufe von sich gegenüberliegenden Wänden (10') gebildet und verlaufen in einem spitzen Winkel zur Hauptausdehnung der Haltefeder (5'). Die hakenförmige Nase (8') ist so lang ausgeführt, daß der die Schenkel (6') verbindende Steg (7') der U-förmigen Haltefeder (5') nur dann zwischen die Nase (8') und die beiden Lagerflächen (9') einsetzbar ist, wenn die beiden Schenkel (6') der U-förmigen Haltefeder (5') zusammengedrückt werden und dabei der Steg (7') sich ausreichend groß durchbiegt bis er unter die Nase reicht. Einer der beiden Schenkel (6') der U-förmigen Haltefeder (5') ist länger ausgeführt und hintergreift mit einem abgewinkelten Endabschnitt (11') den Rand einer Öffnung des Glühlampenhalters (1').The known incandescent lamp holder (1 ') shown in Figure 1 and Figure 2 is sleeve-shaped and made of die-cast. The bulb (2 ') with its glass bulb is inserted from the rear of the bulb holder into the central opening (3') of the base of the bulb holder until the flange (4 ') surrounding the bulb base on the one surrounding the opening (3') Floor area rests. A U-shaped retaining spring (5 ') made of spring wire rests on opposite sides of the flange (4') under prestress. The web (7 ') connecting the legs (6') of the U-shaped retaining spring is mounted on the incandescent lamp holder (1 ') so as to be pivotable about the pivot axis. The swivel bearing is formed by a hook-shaped nose (8 ') which opens in the light exit direction and by two bearing surfaces (9') which are open in the direction of insertion of the incandescent lamp. The web (7 ') of the U-shaped retaining spring (5') lies on the two bearing surfaces (9 ') with one end section each. The two bearing surfaces (9 ') are each formed by an abutting surface of a step of opposing walls (10') and extend at an acute angle to the main extension of the retaining spring (5 '). The hook-shaped nose (8 ') is so long that the web (7') connecting the legs (6 ') of the U-shaped retaining spring (5') only then between the nose (8 ') and the two bearing surfaces (9 ') can be used if the two legs (6') of the U-shaped retaining spring (5 ') are pressed together and the web (7') bends sufficiently large until it reaches under the nose. One of the two legs (6 ') of the U-shaped retaining spring (5 ') is longer and engages behind the edge of an opening of the incandescent lamp holder (1') with an angled end section (11 ').

Nachfolgend sind die Unterschiede des in den Figuren 3, 4, 5 und 6 dargestellten Glühlampenhalters (1) nach der Erfindung gegenüber dem vorstehend beschriebenen bekannten Glühlampenhalter (1') beschrieben. Die U-förmig gebogene Haltefeder (5) weist an ihrem die beiden Schenkel (6) verbindenden Steg (7) mittig eine Ausbuchtung auf, die sich zum Sockel der Glühlampe (2) hin öffnet. Die Ausbuchtung (15, 16) ist U-förmig gestaltet. Angrenzend an diesen U-förmigen Abschnitt (15, 16) der Haltefeder liegt der Steg (7) an zwei Lagerflächen (9) an, die von zur Rückseite des Scheinwerfers hin sich öffnenden Schlitzen des Glühlampenhalters (1) gebildet werden. Zwischen diesen Schlitzen ist eine zum Glühlampensockel hin weisende Nase (8) angeordnet. Die Nase (8) weist einen zylindrischen Mantelflächenabschnitt (14) auf, der konzentrisch zur Schwenkachse verläuft und zum Teil der Lichtaustrittsöffnung des Scheinwerfers zugewandt ist. Der Radius des zylindrischen Mantelflächenabschnitts (14) entspricht etwa dem Abstand von der Schwenkachse (12) bis zur Innenseite des Stegs (15) des U-förmigen Abschnitts der Haltefeder (5). Die Dicke der Nase (8) entspricht etwa dem Abstand der beiden Schenkel (16) des U-förmigen Abschnitts der Haltefeder (5). An den zylindrischen Mantelflächenabschnitt ist ein als Anschlag dienender Ansatz (17) angeformt, welcher für die Haltefeder (5) ein Anschlag und eine Einrastvorrichtung ist. Die Oberfläche des Ansatzes (17), die der Glühlampe zugewandt ist, geht kontinuierlich in den zylinderförmigen Mantelflächenabschnitt (14) der Nase (8) über. Dadurch ist es möglich, daß beim Montieren der Haltefeder (5) der die Schenkel (16) verbindende Steg (15) des U-förmigen Abschnitts der Haltefeder (5) über den Ansatz (17) hinweggleitet. Der als Anschlag dienende Ansatz (17) und der Ansatz (18) bilden eine Verrastungsmarke für die Haltefeder (5). Der die Schenkel (6) verbindende Steg (7) der U-förmigen Haltefeder (5) ist zwischen zwei quer zu ihm verlaufenden Wänden (19) angeordnet. Die mit der Nase (8) verbundene Wandung (22) weist auf der der Glühlampe abgewandten Seite die Auflaufschräge (23) auf.The differences of the incandescent lamp holder (1) according to the invention shown in FIGS. 3, 4, 5 and 6 compared to the known incandescent lamp holder (1 ') described above are described below. The U-shaped retaining spring (5) has a bulge in the middle of its web (7) connecting the two legs (6), which bulge opens towards the base of the incandescent lamp (2). The bulge (15, 16) is U-shaped. Adjacent to this U-shaped section (15, 16) of the retaining spring, the web (7) bears against two bearing surfaces (9) which are formed by slots in the incandescent lamp holder (1) which open towards the rear of the headlight. A nose (8) pointing towards the bulb base is arranged between these slots. The nose (8) has a cylindrical lateral surface section (14) which runs concentrically to the swivel axis and partly faces the light exit opening of the headlight. The radius of the cylindrical lateral surface section (14) corresponds approximately to the distance from the pivot axis (12) to the inside of the web (15) of the U-shaped section of the retaining spring (5). The thickness of the nose (8) corresponds approximately to the distance between the two legs (16) of the U-shaped section of the retaining spring (5). A shoulder (17) serving as a stop is molded onto the cylindrical lateral surface section, which is a stop and a latching device for the retaining spring (5). The surface of the extension (17), which faces the incandescent lamp, merges continuously into the cylindrical outer surface section (14) of the nose (8). This makes it possible for the web (15) connecting the legs (16) of the U-shaped section of the retaining spring (5) to slide over the shoulder (17) when the retaining spring (5) is being fitted. The approach (17) serving as a stop and the approach (18) form a latching mark for the Retaining spring (5). The web (7) connecting the legs (6) of the U-shaped retaining spring (5) is arranged between two walls (19) running transversely to it. The wall (22) connected to the nose (8) has the run-on slope (23) on the side facing away from the incandescent lamp.

Beim Montieren der U-förmigen Haltefeder (1) wird diese mit ihrem die beiden Schenkel (6) verbindenden Steg (7) voraus und gegenüber ihrer Endlage um 180° gedreht in Richtung (24) dem Schwenklager zugeführt. Dabei trifft der mittlere Steg (15) des U-förmigen Abschnitts der Haltefeder auf die Auflaufschräge (23) der Wandung (22) auf und wird durch diese Wandung geführt, da diese bei entsprechender Lage der Haltefeder (5) in den U-förmigen Abschnitt hineinragt. Die beiden parallel zu den Schenkeln (6) der Haltefeder (5) verlaufenden Wände (19) dienen als Einfädelungshilfe, und die dem Glühlampensockel benachbarten Wände (20) dienen als Anschlag für die an die Schenkel (6) angrenzenden Abschnitte des Stegs der U-förmigen Haltefeder. Danach liegt der Steg (7) an den Lagerflächen (9) an, und die Nase (8) ragt in den U-förmigen Abschnitt der Haltefeder (5) hinein (siehe Figur 5). Daran anschließend wird die Haltefeder (5) in Richtung (25) um die Schwenkachse (12) verschwenkt, bis der Steg (15) des U-förmigen Abschnitts der Haltefeder (5) den als Anschlag dienenden Ansatz (17) der Nase (8) rastend hintergreift. Dadurch ist die Haltefeder (5) verliersicher in dem Schwenklager gehalten. Nach dem Einrasten der Haltefeder (5) in die von den Ansätzen (17 und 18) gebildete Verrastungsmarke verlaufen die Schenkel der Haltefeder etwa parallel zur Glühlampenachse. Somit hindert die Haltefeder beim Glühlampenwechsel nicht. In der Befestigungsposition der Haltefeder (5) hintergreifen die zu Ösen gebogenen Endabschnitte (11) der Schenkei (6) die hakenförmigen Hinterschneidungen (26) des Glühlampenhalters (1).When mounting the U-shaped retaining spring (1), it is fed to the pivot bearing with its web (7) connecting the two legs (6) and rotated by 180 ° in the direction (24) relative to its end position. The middle web (15) of the U-shaped section of the retaining spring strikes the run-up slope (23) of the wall (22) and is guided through this wall, since the retaining spring (5) is in the appropriate position in the U-shaped section protrudes. The two walls (19) running parallel to the legs (6) of the retaining spring (5) serve as a threading aid, and the walls (20) adjacent to the bulb socket serve as a stop for the sections of the web of the U- adjacent to the legs (6). shaped retaining spring. The web (7) then lies against the bearing surfaces (9) and the nose (8) protrudes into the U-shaped section of the retaining spring (5) (see FIG. 5). Then the holding spring (5) is pivoted in the direction (25) about the pivot axis (12) until the web (15) of the U-shaped section of the holding spring (5) serves as a stop (17) of the nose (8). engages behind. As a result, the retaining spring (5) is held captively in the pivot bearing. After the retaining spring (5) has engaged, the legs of the retaining spring run approximately parallel to the axis of the incandescent lamp. Thus, the retaining spring does not prevent the bulb from being changed. In the fastening position of the retaining spring (5), the end sections (11) of the leg (6) bent into eyelets engage behind the hook-shaped undercuts (26) of the incandescent lamp holder (1).

Claims (14)

  1. Motor vehicle headlamp having an annular bulb holder (1), into the central opening (3) of which a bulb (2) is inserted from the rear of the headlamp, having a U-shaped retaining spring (5) made of spring wire, which with the crosspiece (7) connecting the legs (6) is mounted, between at least one bearing surface (9) open in the direction in which the bulb (2) is inserted and at least one lug (8) of the bulb holder (1) directed towards a bulb socket, so as to be able to twist between two extreme positions and in one extreme position engages an undercut of the bulb holder (1) from the rear by the free end portion (11) of at least one leg (6), pressing with both its legs (6) a socket flange (4) of the bulb (2) against a peripheral region of the opening (3) in the bulb holder (1), and in the other extreme position resting against a limit stop (17) of the bulb holder (1),
    characterised by the following features:
    - the crosspiece (7) connecting the legs (6) of the retaining spring (5) incorporates at least one pocket (15, 16) directed in the opposite direction to the legs (6) of the retaining spring,
    - the size and shape of the pocket (15, 16) are such that when it is swivelled into its fastening position it engages the lug (8) from beneath.
  2. Headlamp according to claim 1, characterised in that the pocket (15, 16) is incorporated centrally into the retaining spring's crosspiece (7) connecting the legs (6) and the portions of the crosspiece (7) that are contiguous with the pocket (15, 16) each rest against one bearing surface (9) of the bulb holder (5).
  3. Headlamp according to claim 1, characterised in that contiguous with the legs of the retaining spring, a respective pocket is incorporated into the crosspiece of the retaining spring and the crosspiece rests with its central portion against a bearing surface of the bulb holder.
  4. Headlamp according to any of the preceding claims, characterised in that the size and shape of the lug (8) are such that with the retaining spring (5) in any position in its desired swivel zone it projects into the pocket (15, 16) of the crosspiece (7) of the retaining spring (5) and protrudes past said spring.
  5. Headlamp according to any of claims 1 to 4, characterised in that the bearing surface (9) of the bulb holder (1) for the retaining spring (5) is constituted by a slot opening towards the rear of the headlamp.
  6. Headlamp according to any of claims 1 to 5, characterised in that the portion of the lug (8) held from beneath by the pocket (15, 16) when the retaining spring (5) is in the desired swivel zone is constituted by a cylindrical generated surface portion (14) extending more or less concentrically with the swivel axis (12) of the retaining spring (5), the radius of which surface portion (14) corresponds more or less to the depth of the pocket (15, 16).
  7. Headlamp according to any of claims 1 to 6, characterised in that the width of the lug (8) corresponds to more or less the width of the pocket (15, 16).
  8. Headlamp according to any of claims 1 to 7, characterised in that of the facing lateral surfaces of the slots in which the retaining spring (5) is mounted so as to be able to twist, the lateral surface (20) remote from the bulb socket is higher.
  9. Headlamp according to any of claims 1 to 8, characterised in that extending radially outwards from the top of the lug (8) is a wall (22) whose end face merges into a ramp (23) for the pocket (15, 16) of the retaining spring (5).
  10. Headlamp according to any of claims 1 to 9, characterised in that the crosspiece (7) of the retaining spring (5) connecting the legs (6) is disposed between two walls (19) running at right angles to said crosspiece and which are high enough for their free end portions to serve as a locating guide for the retaining spring (5).
  11. Headlamp according to any of claims 1 to 10, characterised in that moulded onto the cylindrical generated surface portion (14) of the lug (8) is a shoulder (17) acting as a limit stop for the retaining spring (5), the position of which shoulder is such that the retaining spring (5) is able to swivel in an angle of about 90°.
  12. Headlamp according to claim 11, characterised in that the side of the shoulder (17) nearest the bulb merges continuously into the cylindrical generated surface portion (14) of the lug (8).
  13. Headlamp according to claim 12, characterised in that the cylindrical generated surface portion (14) of the lug (8) exhibits a mark showing where the retaining spring (5) catches, said mark being formed by the shoulder (17) acting as a limit stop and by a second shoulder (18) which is lower than the first shoulder (17) and is spaced from the first shoulder (17) by a distance corresponding more or less to the diameter of the retaining spring (5).
  14. Headlamp according to any of claims 1 to 13, characterised in that the pocket (15, 16) of the retaining spring is U-shaped.
EP88112195A 1987-09-08 1988-07-28 Headlamp for a motor vehicle Expired - Lifetime EP0306687B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3729984 1987-09-08
DE3729984A DE3729984C1 (en) 1987-09-08 1987-09-08 Motor vehicle headlights

Publications (3)

Publication Number Publication Date
EP0306687A2 EP0306687A2 (en) 1989-03-15
EP0306687A3 EP0306687A3 (en) 1989-11-23
EP0306687B1 true EP0306687B1 (en) 1993-10-20

Family

ID=6335443

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88112195A Expired - Lifetime EP0306687B1 (en) 1987-09-08 1988-07-28 Headlamp for a motor vehicle

Country Status (4)

Country Link
EP (1) EP0306687B1 (en)
AU (1) AU613389B2 (en)
DE (1) DE3729984C1 (en)
ES (1) ES2045031T3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1241247B (en) * 1990-06-08 1993-12-29 Carello Spa METALLIC REFLECTOR, PARTICULARLY FOR VEHICLE PROJECTORS
FR2760685B1 (en) * 1997-03-11 1999-06-04 Aps Engineering HOLDING SPRING AND COMPRESSION AND ITS APPLICATION IN A COMPACT PRINTING DEVICE
DE19739116A1 (en) * 1997-09-06 1999-03-11 Hella Kg Hueck & Co Lamp holder in opening of reflector of vehicle headlamp and locating element for spring
DE19756456A1 (en) 1997-12-18 1999-06-24 Hella Kg Hueck & Co Socket device for a lamp of a vehicle headlight
EP1219888A1 (en) 2000-12-28 2002-07-03 Automotive Lighting Italia Spa Lamp holding device for a headlight or light of a motor-vehicle
DE102010018118A1 (en) * 2010-04-24 2011-10-27 Hella Kgaa Hueck & Co. Receiving device for light of illumination device, has light socket including spring retainers, spring element received in spring retainers, where light socket includes hold arrangement in which spring element is locked

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2233486A (en) * 1939-12-13 1941-03-04 Michael P Portnow Headlight
DE1025989B (en) * 1956-09-11 1958-03-13 Union Sils Van De Loo & Co Holder for bulb sockets of headlights and lights, especially for motor vehicles
FR1313934A (en) * 1961-11-22 1963-01-04 Dba Sa Quick fixing device of the lamp of an automobile headlight on the collar of its reflector
DE2557233A1 (en) * 1975-12-19 1977-06-30 Bosch Gmbh Robert Motor vehicle headlights unit - has main and additional lamp in reflector with conductive rings
FR2435664A1 (en) * 1978-09-11 1980-04-04 Seima LAMP HOLDER FOR AUTOMOTIVE PROJECTOR
DE8802828U1 (en) * 1988-03-03 1988-04-28 Hella Kg Hueck & Co, 4780 Lippstadt, De
DE3831372C1 (en) * 1988-09-15 1990-03-22 Hella Kg Hueck & Co, 4780 Lippstadt, De

Also Published As

Publication number Publication date
AU2063688A (en) 1989-03-09
AU613389B2 (en) 1991-08-01
EP0306687A3 (en) 1989-11-23
DE3729984C1 (en) 1989-02-09
ES2045031T3 (en) 1994-01-16
EP0306687A2 (en) 1989-03-15

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