EP0412367B1 - Automotive vehicle headlamp - Google Patents
Automotive vehicle headlamp Download PDFInfo
- Publication number
- EP0412367B1 EP0412367B1 EP90114344A EP90114344A EP0412367B1 EP 0412367 B1 EP0412367 B1 EP 0412367B1 EP 90114344 A EP90114344 A EP 90114344A EP 90114344 A EP90114344 A EP 90114344A EP 0412367 B1 EP0412367 B1 EP 0412367B1
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- EP
- European Patent Office
- Prior art keywords
- headlamp according
- screen
- pressure spring
- spring
- section
- 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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- 230000001154 acute effect Effects 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 230000006835 compression Effects 0.000 description 25
- 238000007906 compression Methods 0.000 description 25
- 239000002184 metal Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
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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
- F21S41/686—Blades, i.e. screens moving in a vertical plane
Definitions
- the invention relates to a headlight for vehicles, with the features according to the preamble of claim 1.
- a tension spring inserted between the second screen and a fixed part holds the second screen in an end position.
- an adjustment device is articulated on it, by means of which the second diaphragm must be pressed into its one end position against the force of the tension spring and must be held in this.
- the adjustable diaphragm of the second diaphragm is only positioned exactly when the adjustment of the second diaphragm is carried out completely and precisely.
- the object of the invention is to improve the headlight described in the generic term such that a spring not only fixes the second aperture in its two end positions, but also when the second aperture is not pivoted to exactly one of the two end positions, the second aperture in brings the end position.
- Claims 9 to 12 propose a recess in the fixed screen which has the stops and which has the minimum dimensions and does not cause any friction when the second screen is pivoted. With claims 13 and 14, the smallest possible dimensions of the longitudinal slot introduced in the second panel are achieved without causing friction between it and the compression spring.
- Claims 15 to 17 propose headlights in which either all the cutouts in the diaphragms are separated from one another or are formed in the diaphragms by a common opening. With common openings, the tool life increases due to the larger area to be punched out of the screen.
- a compression spring with the smallest possible dimensions is achieved, which nevertheless rests with a relatively large prestress on the abutments of the diaphragms and a small distance from which has an adjacent aperture.
- this compression spring is securely locked to the panels by simply bending an end section protruding from the panels.
- Such a spring can not, such as. B. a coil spring under load transverse to its longitudinal axis.
- a headlamp is proposed in which the compression spring can be installed easily and quickly, without a great deal of friction when adjusting the second aperture between the compression spring and the apertures.
- the headlight for vehicles shown in Figure 1 consists essentially of an ellipsoidal reflector (1) and a fixed first diaphragm (3) and adjustable second diaphragm (4) arranged between the converging lens (2) and the reflector (1).
- the reflector has an opening (5) at the apex for receiving an incandescent lamp (6).
- the first panel (3) and the frame (8) are made in one piece from sheet metal.
- the diaphragm edge (9) of the first diaphragm (3) is arranged approximately in the focal point of the converging lens (2) and has a profile which is common for a headlamp for right-hand traffic.
- the diaphragm edge (9) has a horizontal first part (10), which forms the section of the light / dark boundary lying on the side of oncoming traffic, and a second part (11) falling off to the horizontal, which forms the other section of the light / dark boundary .
- the second panel (4) which is made of sheet metal, bears against the main surface of the first panel, which faces the lens (2) and runs perpendicular to the optical axis.
- the second diaphragm (4) can be pivoted about an axis (12) running parallel to the optical axis in two end positions, of which the upper active position (see FIG. 3) and the lower one is a rest position (see FIG. 4). In the lower end position, the diaphragm edge (13) of the second diaphragm lies below the first part (11) of the fixed diaphragm edge, while in the upper end position the diaphragm edge (13) of the second diaphragm (4) lies above the second part (11) of the fixed diaphragm edge lies.
- the adjustable diaphragm edge (13) merges into the first part (10) of the fixed diaphragm edge (9) and lies with this first part in a horizontal plane.
- the pivot axis (12) lies at a distance from the adjustable diaphragm edge below the first part (10) of the fixed diaphragm edge (9).
- the second screen (4) has a section (14) which extends beyond the pivot point (12) and serves as a handle for adjusting the second screen (4).
- the second diaphragm (4) is pretensioned in both end positions by a compression spring (15), which is located between a first abutment (16) of the first diaphragm (3) and a second abutment (17) of the second diaphragm (4) is inserted, held.
- the compression spring (15) is made from a spring wire and bent into an annular eyelet.
- the ring lies approximately in a surface running parallel to the diaphragms (3 and 4).
- the annular compression spring has a first end section (18) and a second end section (19).
- the end sections (18, 19) which are at a distance from one another, are bent so far in their direction of pressure that they run at an acute angle to their direction of insertion.
- the end section (18) of the compression spring (15) passes through the recess (20) of the first panel (3) and the recess (21) of the second panel.
- the abutment (16) of the first diaphragm (3) is formed by the side surface of the recess (20).
- the side surface (16) is an annular jacket surface section, the radius of which corresponds approximately to the radius of the spring wire.
- the recess (21) in the second panel (4) is a longitudinal slot, which is slightly wider than the diameter of the spring wire and extends in an arc in its longitudinal extent, the center of which lies on the pivot axis (12).
- the longitudinal slot (21) is so long that when the second diaphragm (4) is pivoted between the first end section (18) of the compression spring (15) and the longitudinal slot (21) there is largely no friction.
- the second end section (19) of the compression spring passes through the cutout (22) of the first cover (3) and the cutout (23) of the second cover (4).
- the recess (23) is a circular opening, the side surface section of which faces the abutment (16) is the abutment (17) for the end section (19).
- the recess (22) in the first panel (3) is formed by a longitudinal slot, the short side surfaces (24) of which serve as a stop for the second end section (19) of the compression spring.
- the longitudinal slot (22) is so wide that it forms an opening in the first panel (3) together with the recess (22).
- FIG 2 the position of the abutment (16, 17) and the stops (24) to each other and to the pivot point (12) is shown.
- the distance (a) between the first abutment (16) and the pivot point (12) is smaller than the distance (b) between the second end section (19) of the compression spring (15) and the pivot point (12).
- the distance (c) between the first abutment (16) and the stops (24) for the second end section (19) of the compression spring (15) is related to the distance (d), which is the difference between the distances (b and a) in a ratio which is 1.5: 1.
- the first abutment (16) lies on a line (25) which passes through the pivot point (12) and in the middle between the two stops (24).
- the end sections (18 and 19) of the compression spring rest only on the outer edges of the abutment surface (16, 17) and the stops (24). Since they also rest in the end positions of the adjustable diaphragm (4) on the outer edges of the longitudinal slots (21 and 22), the adjustable diaphragm (4) is not only fixed in its direction of adjustment by the spring, but also transversely in the area of the wire spring to the direction of adjustment.
- the diaphragm edge (13) of the second diaphragm (4) could produce the light / dark limit in its upper and lower end positions together with the first part (10) of the first diaphragm (3), since the diaphragm edge (13) is precisely positioned in both end positions of the diaphragm (4).
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
Die Erfindung bezieht sich auf einen Scheinwerfer für Fahrzeuge, mit den Merkmalen nach dem Oberbegriff des Anspruchs 1.The invention relates to a headlight for vehicles, with the features according to the preamble of
Bei einem solchen aus der DE-OS 37 19 638 bekannten Scheinwerfer hält eine zwischen der zweiten Blende und einem ortsfesten Teil eingesetzte Zugfeder die zweite Blende in einer Endstellung. Um die zweite Blende in ihre andere Endstellung verstellen zu können, ist an dieser eine Verstellvorrichtung angelenkt, durch welche die zweite Blende entgegen der Kraft der Zugfeder in ihre eine Endstellung gedrückt und in dieser gehalten werden muß. In dieser Endstellung ist die verstellbare Blende der zweiten Blende nur dann genau positioniert, wenn die Verstellung der zweiten Blende vollständig und genau ausgeführt wird.In such a headlight known from DE-OS 37 19 638, a tension spring inserted between the second screen and a fixed part holds the second screen in an end position. In order to be able to adjust the second diaphragm into its other end position, an adjustment device is articulated on it, by means of which the second diaphragm must be pressed into its one end position against the force of the tension spring and must be held in this. In this end position, the adjustable diaphragm of the second diaphragm is only positioned exactly when the adjustment of the second diaphragm is carried out completely and precisely.
Aufgabe der Erfindung ist es, den im Gattungsbegriff beschriebenen Scheinwerfer derart zu verbessern, daß eine Feder nicht nur die zweite Blende in ihren beiden Endstellungen fixiert, sondern auch wenn die zweite Blende nicht bis genau in eine der beiden Endstellungen geschwenkt wird, die zweite Blende in die Endstellung hinbringt. Diese Aufgabe wird nach der Erfindung durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale gelöst.The object of the invention is to improve the headlight described in the generic term such that a spring not only fixes the second aperture in its two end positions, but also when the second aperture is not pivoted to exactly one of the two end positions, the second aperture in brings the end position. This object is achieved according to the invention by the features specified in the characterizing part of
Bei einer solchen Lösung wird beim Verschwenken der zweiten Blende die zwischen den Widerlagern unter Vorspannung eingesetzte Druckfeder bis zu einem Druckpunkt hin laufend zusammengedrückt. Beim Erreichen des Druckpunktes weisen die Endabschnitte der Druckfeder die kürzeste Entfernung zueinander auf. Nach einem Überschreiten des Druckpunktes vergrößert sich der Abstand der Endabschnitte der Druckfeder solange bis der verschwenkbare Endabschnitt an dem Anschlag der ortsfesten Blende anliegt. Nach dem Überschreiten des Druckpunktes der Druckfeder schwenkt der verschwenkbare Endabschnitt der Druckfeder durch seine auf das verstellbare Widerlager wirkende Kraft die zweite Blende in ihre Endstellung. Dadurch kann eine mit der zweiten Blende gekoppelte Verstellvorrichtung ein großes Spiel aufweisen.In such a solution, when the second diaphragm is pivoted, the compression spring inserted between the abutments under prestress is continuously compressed up to a pressure point. When the pressure point is reached, the end sections of the compression spring are at the shortest distance from one another. After the pressure point has been exceeded, the distance between the end sections of the compression spring increases until the pivotable end section bears against the stop of the stationary diaphragm. After exceeding the Pressure point of the compression spring, the pivotable end section of the compression spring pivots the second diaphragm into its end position due to its force acting on the adjustable abutment. As a result, an adjustment device coupled to the second diaphragm can have a large amount of play.
Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen beschrieben. Mit den Ansprüchen 2 bis 4 wird in den Endstellungen der zweiten Blende eine vorteilhafte Lage der Widerlager für die Endabschnitte der Druckfeder und den Anschlägen für die verschwenkbaren Endabschnitte zueinander und zum Schwenkpunkt hin erreicht. Hierbei ist die gegen das verstellbare Widerlager wirkende Kraft der Druckfeder um so größer, je kleiner der Abstand der Endabschnitte der Druckfeder im Druckpunkt ist. Mit dem Anspruch 5 wird eine Lage der Widerlager und der Anschläge aufgezeigt, bei welcher in beiden Endstellungen der zweiten Blende die Kraft der Druckfeder etwa gleich groß ist. Mit Anspruch 6 wird eine kostengünstig herstellbare Druckfeder vorgeschlagen, welche im Zusammenhang mit den Ansprüchen 7 und 8 die Blende in Verstellrichtung spielfrei hält. Mit den Ansprüchen 9 bis 12 wird eine die Anschläge aufweisende Aussparung in der ortsfesten Blende vorgeschlagen, welche die Mindestmaße aufweist und dabei keine Reibung beim Verschwenken der zweiten Blende verursacht. Mit den Ansprüchen 13 und 14 werden möglichst kleine Abmaße des in die zweiten Blende eingebrachten Längsschlitzes erreicht, ohne daß zwischen ihm und der Druckfeder eine Reibung entsteht. Mit den Ansprüchen 15 bis 17 werden Scheinwerfer vorgeschlagen, bei welchen entweder sämtliche Aussparungen in den Blenden voneinander getrennt sind oder in den Blenden von einer gemeinsamen öffnung gebildet werden. Bei gemeinsamen öffnungen erhöht sich wegen der größer auszustanzenden Fläche aus der Blende die Standzeit des Werkzeuges. Mit den Ansprüchen 18 bis 23 wird eine Druckfeder mit möglichst kleinen Baumaßen erreicht, welche dennoch mit einer relativ großen Vorspannung an den Widerlagern der Blenden anliegt und einen kleinen Abstand zu der ihr benachbarten Blende aufweist. Außerdem ist diese Druckfeder durch einfaches Umbiegen eines aus den Blenden herausragenden Endabschnitts sicher an den Blenden arretiert. Eine solche Feder kann sich nicht, wie z. B. eine Spiralfeder, unter Belastung quer zu ihrer Längsachse durchbiegen. Mit Anspruch 24 wird ein Scheinwerfer vorgeschlagen, bei welchem die Druckfeder einfach und schnell montiert werden kann, ohne daß beim Verstellen der zweiten Blende zwischen der Druckfeder und den Blenden eine große Reibung besteht.Advantageous developments of the invention are described in the subclaims. With
Die Erfindung ist in der Zeichnung dargestellt und zwar zeigt
Figur 1 einen mittleren vertikalen Längsschnitt durch einen Scheinwerfer für Fahrzeuge, mit einer zwischen einem Reflektor und einer Sammellinse angeordneten, ortsfesten und verstellbaren Blende,Figur 2 eine Ansicht aus Richtung X auf die ortsfeste und verstellbare Blende, mit deren beiden Endstellungen, wobei die obere Endstellung der verstellbaren Blende gestrichelt ist,Figur 3 eine Ansicht der verstellbaren Blende in der oberen Endstellung,Figur 4 die verstellbare Blende der unteren Endstellung undFigur 5 die Einzelheit Y derFigur 1.
- FIG. 1 shows a central vertical longitudinal section through a headlight for vehicles, with a fixed and adjustable diaphragm arranged between a reflector and a converging lens,
- FIG. 2 shows a view from the direction X of the fixed and adjustable diaphragm, with its two end positions, the upper end position of the adjustable diaphragm being dashed,
- FIG. 3 shows a view of the adjustable diaphragm in the upper end position,
- Figure 4 shows the adjustable aperture of the lower end position
- 5 shows the detail Y of Figure 1.
Der in Figur 1 dargestellte Scheinwerfer für Fahrzeuge besteht im wesentlichen aus einem ellipsoidförmigen Reflektor (1) und einer zwischen der Sammellinse (2) und dem Reflektor (1) angeordneten, ortsfesten ersten Blende (3) und verstellbaren zweiten Blende (4). Der Reflektor weist am Scheitel eine öffnung (5) zur Aufnahme einer Glühlampe (6) auf. Am äußeren Reflektorrand (7) ist das die Linse (2) tragende Gestell (8) befestigt. Die erste Blende (3) und das Gestell (8) sind einteilig aus Blech hergestellt.The headlight for vehicles shown in Figure 1 consists essentially of an ellipsoidal reflector (1) and a fixed first diaphragm (3) and adjustable second diaphragm (4) arranged between the converging lens (2) and the reflector (1). The reflector has an opening (5) at the apex for receiving an incandescent lamp (6). At the outer edge of the reflector (7) this is the lens (2) supporting frame (8) attached. The first panel (3) and the frame (8) are made in one piece from sheet metal.
Die Blendenkante (9) der ersten Blende (3) ist etwa im Brennort der Sammellinse (2) angeordnet und weist einen Verlauf auf, welcher für einen Scheinwerfer für Rechtsverkehr üblich ist. Die Blendenkante (9) weist nämlich einen horizontalen ersten Teil (10) auf, welcher den auf der Seite des Gegenverkehrs liegenden Abschnitt der Hell/Dunkelgrenze bildet und einen zur Horizontalen abfallenden zweiten Teil (11), welcher den anderen Abschnitt der Hell/Dunkelgrenze bildet. An der der Linse (2) zugewandten und senkrecht zur optischen Achse verlaufenden Hauptfläche der ersten Blende liegt die aus Blech bestehende zweite Blende (4) an. Die zweite Blende (4) ist um eine parallel zur optischen Achse verlaufende Achse (12) in zwei Endstellungen schwenkbar, von denen die obere Aktivstellung (siehe Figur 3) und die untere eine Ruhestellung (siehe Figur 4) ist. In der unteren Endstellung liegt die Blendenkante (13) der zweiten Blende unterhalb des ersten Teils (11) der ortsfesten Blendenkante, während in der oberen Endstellung die Blendenkante (13) der zweiten Blende (4) oberhalb des zweiten Teils (11) der ortsfesten Blendenkante liegt. In der Aktivstellung geht in Richtung auf die Projektionsebene gesehen die verstellbare Blendenkante (13) in den ersten Teil (10) der ortsfesten Blendenkante (9) über und liegt mit diesem ersten Teil in einer Horizontalebene. Die Schwenkachse (12) liegt in einem Abstand zur verstellbaren Blendenkante unterhalb des ersten Teils (10) der ortsfesten Blendenkante (9). Die zweite Blende (4) weist einen über den Schwenkpunkt (12) sich hinaus erstreckenden Abschnitt (14) auf, welcher als Handhabe zum Verstellen der zweiten Blende (4) dient.The diaphragm edge (9) of the first diaphragm (3) is arranged approximately in the focal point of the converging lens (2) and has a profile which is common for a headlamp for right-hand traffic. The diaphragm edge (9) has a horizontal first part (10), which forms the section of the light / dark boundary lying on the side of oncoming traffic, and a second part (11) falling off to the horizontal, which forms the other section of the light / dark boundary . The second panel (4), which is made of sheet metal, bears against the main surface of the first panel, which faces the lens (2) and runs perpendicular to the optical axis. The second diaphragm (4) can be pivoted about an axis (12) running parallel to the optical axis in two end positions, of which the upper active position (see FIG. 3) and the lower one is a rest position (see FIG. 4). In the lower end position, the diaphragm edge (13) of the second diaphragm lies below the first part (11) of the fixed diaphragm edge, while in the upper end position the diaphragm edge (13) of the second diaphragm (4) lies above the second part (11) of the fixed diaphragm edge lies. In the active position, viewed in the direction of the projection plane, the adjustable diaphragm edge (13) merges into the first part (10) of the fixed diaphragm edge (9) and lies with this first part in a horizontal plane. The pivot axis (12) lies at a distance from the adjustable diaphragm edge below the first part (10) of the fixed diaphragm edge (9). The second screen (4) has a section (14) which extends beyond the pivot point (12) and serves as a handle for adjusting the second screen (4).
Die zweite Blende (4) wird in beiden Endstellungen durch eine Druckfeder (15), welche zwischen einem ersten Widerlager (16) der ersten Blende (3) und einem zweiten Widerlager (17) der zweiten Blende (4) unter Vorspannung eingesetzt ist, gehalten. Die Druckfeder (15) ist aus einem Federdraht hergestellt und zu einer kreisringförmigen öse gebogen. Der Ring liegt etwa in einer parallel zu den Blenden (3 und 4) verlaufenden Fläche. Die kreisringförmige Druckfeder weist einen ersten Endabschnitt (18) und einen zweiten Endabschnitt (19) auf. Die in einem Abstand zueinander aufweisenden Endabschnitte (18, 19) sind soweit in ihre Druckrichtung abgebogen, daß sie in dem spitzen Winkel zu ihrer Einsteckrichtung verlaufen. Der Endabschnitt (18) der Druckfeder (15) geht durch die Aussparung (20) der ersten Blende (3) und die Aussparung (21) der zweiten Blende hindurch. Das Widerlager (16) der ersten Blende (3) wird von der Seitenfläche der Aussparung (20) gebildet. Hierbei ist die Seitenfläche (16) ein kreisringförmiger Mantelflächenabschnitt, dessen Radius, etwa dem Halbmesser des Federdrahtes entspricht. Die Aussparung (21) in der zweiten Blende (4) ist ein Längsschlitz, welcher etwas breiter als der Durchmesser des Federdrahtes ausgeführt ist und in seiner Längsausdehnung in einem Bogen verläuft, dessen Mittelpunkt auf der Schwenkachse (12) liegt. Der Längsschlitz (21) ist so lang ausgeführt, daß beim Verschwenken der zweiten Blende (4) zwischen dem ersten Endabschnitt (18) der Druckfeder (15) und dem Längsschlitz (21) weitestgehend keine Reibung besteht. Der zweite Endabschnitt (19) der Druckfeder geht durch die Aussparung (22) der ersten Blende (3) und der Aussparung (23) der zweiten Blende (4) hindurch. Die Aussparung (23) ist eine kreisförmige öffnung, deren dem Widerlager (16) zugewandte Seitenflächenabschnitt das Widerlager (17) für den Endabschnitt (19) ist. Die Aussparung (22) in der ersten Blende (3) wird von einem Längsschlitz gebildet, dessen kurze Seitenflächen (24) als Anschlag für den zweiten Endabschnitt (19) der Druckfeder dienen. Der Längsschlitz (22) ist so breit ausgeführt, daß er gemeinsam mit der Aussparung (22) eine öffnung in der ersten Blende (3) bildet.The second diaphragm (4) is pretensioned in both end positions by a compression spring (15), which is located between a first abutment (16) of the first diaphragm (3) and a second abutment (17) of the second diaphragm (4) is inserted, held. The compression spring (15) is made from a spring wire and bent into an annular eyelet. The ring lies approximately in a surface running parallel to the diaphragms (3 and 4). The annular compression spring has a first end section (18) and a second end section (19). The end sections (18, 19), which are at a distance from one another, are bent so far in their direction of pressure that they run at an acute angle to their direction of insertion. The end section (18) of the compression spring (15) passes through the recess (20) of the first panel (3) and the recess (21) of the second panel. The abutment (16) of the first diaphragm (3) is formed by the side surface of the recess (20). Here, the side surface (16) is an annular jacket surface section, the radius of which corresponds approximately to the radius of the spring wire. The recess (21) in the second panel (4) is a longitudinal slot, which is slightly wider than the diameter of the spring wire and extends in an arc in its longitudinal extent, the center of which lies on the pivot axis (12). The longitudinal slot (21) is so long that when the second diaphragm (4) is pivoted between the first end section (18) of the compression spring (15) and the longitudinal slot (21) there is largely no friction. The second end section (19) of the compression spring passes through the cutout (22) of the first cover (3) and the cutout (23) of the second cover (4). The recess (23) is a circular opening, the side surface section of which faces the abutment (16) is the abutment (17) for the end section (19). The recess (22) in the first panel (3) is formed by a longitudinal slot, the short side surfaces (24) of which serve as a stop for the second end section (19) of the compression spring. The longitudinal slot (22) is so wide that it forms an opening in the first panel (3) together with the recess (22).
In Figur 2 ist die Lage der Widerlager (16, 17) und der Anschläge (24) zueinander und zum Schwenkpunkt (12) hin dargestellt. Hierbei ist der Abstand (a) zwischen dem ersten Widerlager (16) und dem Schwenkpunkt (12) kleiner als der Abstand (b) zwischen dem zweiten Endabschnitt (19) der Druckfeder (15) und dem Schwenkpunkt (12). Der Abstand (c) zwischen dem ersten Widerlager (16) und den Anschlägen (24) für den zweiten Endabschnitt (19) der Druckfeder (15) steht zu dem Abstand (d), welcher die Differenz der Abstände (b und a), ist in einem Verhältnis, welches 1,5:1 ist. Das erste Widerlager (16) liegt auf einer Linie (25), welche durch den Schwenkpunkt (12) und mittig zwischen den beiden Anschlägen (24) hindurchgeht.In Figure 2, the position of the abutment (16, 17) and the stops (24) to each other and to the pivot point (12) is shown. The distance (a) between the first abutment (16) and the pivot point (12) is smaller than the distance (b) between the second end section (19) of the compression spring (15) and the pivot point (12). The distance (c) between the first abutment (16) and the stops (24) for the second end section (19) of the compression spring (15) is related to the distance (d), which is the difference between the distances (b and a) in a ratio which is 1.5: 1. The first abutment (16) lies on a line (25) which passes through the pivot point (12) and in the middle between the two stops (24).
Bei dem in der Zeichnung dargestellten Ausführungsbeispiel des Scheinwerfers liegen die Endabschnitte (18 und 19) der Druckfeder nur an den äußeren Kanten der Widerlagerfläche (16, 17) und der Anschläge (24) an. Da sie außerdem auch in den Endstellungen der verstellbaren Blende (4) an den äußeren Kanten der Längsschlitze (21 und 22) anliegen, ist die verstellbare Blende (4) nicht nur in ihrer Verstellrichtung durch die Feder fixiert, sondern auch im Bereich der Drahtfeder quer zur Verstellrichtung.In the embodiment of the headlamp shown in the drawing, the end sections (18 and 19) of the compression spring rest only on the outer edges of the abutment surface (16, 17) and the stops (24). Since they also rest in the end positions of the adjustable diaphragm (4) on the outer edges of the longitudinal slots (21 and 22), the adjustable diaphragm (4) is not only fixed in its direction of adjustment by the spring, but also transversely in the area of the wire spring to the direction of adjustment.
In der oberen Endstellung der zweiten Blende (4) erzeugt ihre Blendenkante (13) zusammen mit dem ersten Teil (10) der Blende (9) die Hell/Dunkelgrenze des aus dem Scheinwerfer austretenden Lichtbündels, während in der unteren Endstellung der Blende (4) von dem ersten Teil (10) und dem zweiten Teil (11) der ersten Blende (3) die Hell/Dunkelgrenze gebildet wird.In the upper end position of the second diaphragm (4), its diaphragm edge (13) together with the first part (10) of the diaphragm (9) creates the light / dark boundary of the light beam emerging from the headlight, while in the lower end position of the diaphragm (4) the light / dark boundary is formed by the first part (10) and the second part (11) of the first diaphragm (3).
Bei dem erfindungsgemäßen neuen Scheinwerfer könnte die Blendenkante (13) der zweiten Blende (4) sowohl in ihrer oberen und unteren Endstellung zusammen mit dem ersten Teil (10) der ersten Blende (3) die Hell/Dunkelgrenze erzeugen, da die Blendenkante (13) in beiden Endstellungen der Blende (4) genau positioniert ist.In the new headlight according to the invention, the diaphragm edge (13) of the second diaphragm (4) could produce the light / dark limit in its upper and lower end positions together with the first part (10) of the first diaphragm (3), since the diaphragm edge (13) is precisely positioned in both end positions of the diaphragm (4).
Claims (25)
- A headlamp for vehicles, with the following features:- a fixed, first screen (3) is inserted between a light source (6) disposed in the region of the focus of a reflector (1) and a convergent lens (2),- a second, adjustable screen (4) seated flat against the first screen (3) can be adjusted to two end positions about a swivelling axis (12) extending perpendicularly to the direction of adjustment of the second screen (4),- at least in one end position of the second screen (4), its screen edge (13) together with the screen edge of the first screen (3) forms the light/dark boundary of the light beam emerging from the headlamp,- the second screen (4) is held in one end position by a spring (15),characterised in that- the spring (15) is a pressure spring,- the pressure spring (15) presses against an abutment (16 and 17) of the first and of the second screen (3 and 4) in both end positions of the second screen (4),- the abutments (16 and 17) are formed from mutually facing side faces of apertures (20 and 23) provided in the first and second screens (3 and 4),- the pressure spring (15) is seated with its free end sections (18 and 19) against the side faces serving as abutments (16 and 17), and in the two end positions of the second screen (4) is seated with its adjustable end section (19) against a side face of an aperture (22) provided in the first screen (3) and serving as a stop (24), under an initial stress,- the abutment (16) of the first screen is situated on a line (25) passing through the swivel point (12) and passing between the two stops (24) of the first screen (3).
- A headlamp according to claim 1, characterised in that the distance (a) between the swivel point (12) and the fixed abutment (20) is greater than or less than the distance (b) between the swivel point (12) and the adjustable abutment (17).
- A headlamp according to claim 2, characterised in that the ratio of the distance (c) between the fixed abutment (16) and the stop (24) for the swivelling end section (19) of the pressure spring (15) to the distance (d), which is the difference between the distances (a and b), is greater than 1.1:1.
- A headlamp according to claim 3, characterised in that the ratio between the distances (c and d) is about 1.5:1.
- A headlamp according to any one of claims 1 to 4, characterised in that the line (25) passing through the swivel point (12) and the fixed abutment (16) passes centrally between the stops (24) for the adjustable end section (19) of the pressure spring (15).
- A headlamp according to any one of claims 1 to 5, characterised in that the pressure spring (15) is made from spring wire.
- A headlamp according to any one of the preceding claims 1 to 6, characterised in that the side faces of the first and second screens (3 and 4), which serve as abutments (16 and 17), are formed from a circular cylindrical curved surface section.
- A headlamp according to claim 6 and 7, characterised in that the radius of the cylindrical curved surface section (16) approximately corresponds to the radius of the spring wire (15).
- A headlamp according to any one of claims 1 to 8, characterised in that the aperture (22) in the first screen (3) which comprises the stops (24) is a longitudinal slot, the short side faces of which are the stops (24) for the adjustable end section (19) of the pressure spring (15).
- A headlamp according to claim 9, characterised in that the side faces (24) lie approximately on a plane passing through the swivel point (12).
- A headlamp according to claim 9 or 10, characterised in that the adjustable end section (19) of the pressure spring (15) is at a distance from the long side faces of the longitudinal slot (22).
- A headlamp according to any one of claims 9 to 11, characterised in that the long side faces of the longitudinal slot (22) extend in an arc, the centre point of which is the swivel point.
- A headlamp according to any one of claims 1 to 12, characterised in that the end section (18) of the wire spring (15) which is seated against the fixed abutment (16) passes through a longitudinal slot (21) provided in the second screen (4).
- A headlamp according to claim 13, characterised in that the longitudinal span of the longitudinal slot (21) extends in an arc, the centre point of which is the swivel point (12), and the side faces of the longitudinal slot (21) are at a distance from the end section (18) of the pressure spring (15).
- A headlamp according to any one of claims 1 to 14, characterised in that at least one of the circular cylindrical curved surface sections serving as abutments (16; 17) are formed from circular openings provided in the screen (3 or 4).
- A headlamp according to any one of claims 1 to 15, characterised in that apertures (20 and 22) are formed from a common opening in one or both screens (3).
- A headlamp according to claim 16, characterised in that the side face of the aperture (20) serving as an abutment (16) extends into a long side face of the longitudinal slot (22).
- A headlamp according to any one of claim 1 to 17, characterised in that the pressure spring (15) made of spring wire is constructed as an annular loop.
- A headlamp according to claim 18, characterised in that the section of the loop (15) forming the ring is circular in shape.
- A headlamp according to claim 18 or 19, characterised in that the section of the loop (15) forming the ring lies approximately in a plane which extends parallel to the flat screens (3 and 4).
- A headlamp according to any one of claims 1 to 20, characterised in that the free ends of the end sections (18 and 19) which project from the apertures (21 and 23) are bent round.
- A headlamp according to claim 21, characterised in that the free ends of the end sections (18 and 19) extend at an acute angle to their direction of insertion.
- A headlamp according to claim 22, characterised in that the free ends of the end sections (18, 19) are angled in the direction of pressure.
- A headlamp according to any one of claims 1 to 23, characterised in that the end sections (18 and 19) of the pressure spring (15) are seated against all the outer edges or borders of the apertures (20, 21, 22 and 23) provided in the screens (3 and 4).
- A headlamp according to any one of claims 1 to 24, characterised in that the pressure spring (15) extends in an arc between the section forming the loop and its angled end sections (18 and 19).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3926455A DE3926455A1 (en) | 1989-08-10 | 1989-08-10 | HEADLIGHTS FOR VEHICLES |
DE3926455 | 1989-08-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0412367A1 EP0412367A1 (en) | 1991-02-13 |
EP0412367B1 true EP0412367B1 (en) | 1993-12-08 |
Family
ID=6386877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90114344A Expired - Lifetime EP0412367B1 (en) | 1989-08-10 | 1990-07-26 | Automotive vehicle headlamp |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0412367B1 (en) |
DE (2) | DE3926455A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005021707A1 (en) * | 2005-05-11 | 2006-11-16 | Hella Kgaa Hueck & Co. | Headlights for vehicles |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4233032A1 (en) * | 1992-10-01 | 1994-04-07 | Hella Kg Hueck & Co | Headlights for vehicles |
DE4407108C2 (en) * | 1993-06-30 | 2003-03-13 | Bosch Gmbh Robert | Vehicle headlights with an adjustable aperture arrangement |
DE19643945C2 (en) * | 1996-10-31 | 2001-04-05 | Armin Orth | Ellipsoidal headlights for motor vehicles |
ATA128399A (en) * | 1999-07-23 | 2005-09-15 | Zizala Lichtsysteme Gmbh | HEADLIGHTS FOR MOTOR VEHICLES |
WO2016201218A2 (en) | 2015-06-12 | 2016-12-15 | Velocys, Inc. | Synthesis gas conversion process |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3528820C2 (en) * | 1985-08-10 | 1994-02-24 | Bosch Gmbh Robert | Low beam or fog lights for motor vehicles |
DE3719638A1 (en) * | 1987-06-12 | 1988-12-29 | Bosch Gmbh Robert | LOW BEAM HEADLIGHT |
-
1989
- 1989-08-10 DE DE3926455A patent/DE3926455A1/en not_active Withdrawn
-
1990
- 1990-07-26 DE DE90114344T patent/DE59003769D1/en not_active Expired - Fee Related
- 1990-07-26 EP EP90114344A patent/EP0412367B1/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005021707A1 (en) * | 2005-05-11 | 2006-11-16 | Hella Kgaa Hueck & Co. | Headlights for vehicles |
Also Published As
Publication number | Publication date |
---|---|
DE3926455A1 (en) | 1991-02-14 |
DE59003769D1 (en) | 1994-01-20 |
EP0412367A1 (en) | 1991-02-13 |
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