EP1139017A1 - Scheinwerfer für Kraftfahrzeug, der mehrere Lichtbündelarten erzeugen kann - Google Patents

Scheinwerfer für Kraftfahrzeug, der mehrere Lichtbündelarten erzeugen kann Download PDF

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Publication number
EP1139017A1
EP1139017A1 EP01400639A EP01400639A EP1139017A1 EP 1139017 A1 EP1139017 A1 EP 1139017A1 EP 01400639 A EP01400639 A EP 01400639A EP 01400639 A EP01400639 A EP 01400639A EP 1139017 A1 EP1139017 A1 EP 1139017A1
Authority
EP
European Patent Office
Prior art keywords
cover
rotation
axis
projector
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.)
Granted
Application number
EP01400639A
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English (en)
French (fr)
Other versions
EP1139017B1 (de
Inventor
Emanuelle c/o Valeo Vision Michel
Jean Louis c/o Valeo Vision Velay
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.)
Valeo Vision SAS
Original Assignee
Valeo Vision SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP1139017A1 publication Critical patent/EP1139017A1/de
Application granted granted Critical
Publication of EP1139017B1 publication Critical patent/EP1139017B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F21S41/689—Flaps, i.e. screens pivoting around one of their edges

Definitions

  • the present invention relates generally to elliptical type projectors for motor vehicles.
  • the invention relates to a headlight for a motor vehicle, comprising a light source, a reflector of the elliptical type, a first focus of which is located near the light source, a converging lens with a focal plane passing through near the second focus of the reflector, a cover being provided between the reflector and the lens converging and having a concealing edge defining a predetermined cutting profile for the light beam emitted by the projector along an optical axis, the cover being movable selectively between two extreme positions under the effect of tilting means, a first position in which the concealment edge of the cover is positioned on the path of the light rays to form a light beam having the predetermined cutting profile, and a second position in which the masking edge of the cover is positioned outside of the path of the light rays to form a second light beam without interruption, the cover being movable about a substantially horizontal axis of rotation and perpendicular to the optical axis of the projector, the tilting means comprising an
  • the electromagnet controls the tilting of the movable cover by through a link interposed between the electromagnet core and a lever arm secured to the movable cover, and a spring biases the lever arm in tension in a position where the movable cover is vertical.
  • the stroke of the electromagnet core is important due to the presence of the lever arm, so that the electromagnet must be specially sized to perform this function, and all the more so since the electromagnet is of the swallower type.
  • the return spring works in extensions of relatively large amplitudes during the tilting of the mobile cover, these repeated extensions being harmful to its lifespan.
  • the movement of the link results from the combination of a translation and a rotation, so that the size of the mechanism for actuating the movable cover is relatively large.
  • the present invention is placed in this context and it aims to provide a projector can selectively emit beams of different profiles determined by the position of a mobile cover, the positions of this mobile cover being precisely defined, the mobile cover being set in motion by a reliable, simple and space-saving device, the movement of this cache taking place as quietly as possible.
  • a first end of the actuating rod is integral the core of an electromagnet movable in translation in a housing comprising a coil, the core being biased by a compression spring bearing against an internal wall of the housing, and a second end of the actuating rod has an oblong slot extending in a direction substantially perpendicular to the direction of actuation of the rod and the axis of rotation of the cover.
  • a headlight for a motor vehicle which comprises a lamp 10 mounted in the bottom of a reflector 20 of the elliptical type, so that the light source 11 of the lamp 10 is located in the immediate vicinity of a first focus of the reflector 20.
  • the lamp 10 may consist of a conventional filament lamp, a halogen lamp or a discharge lamp.
  • the projector also includes a converging lens 70 (not shown in the Figure 1), mounted on an intermediate part 40 of the projector, this intermediate part being integral with the reflector 10.
  • the intermediate piece 40 is such that the focal plane of the lens 70 passes in the immediate vicinity of the second focus of the reflector.
  • the projector finally comprises a movable cover 50 disposed between the reflector 20 and the lens 70, the movable cover 50 being mounted in a support piece 30, itself integral of the reflector 20 and of the intermediate piece 40.
  • the cover 50 located, in its vertical position, in a plane in the immediate vicinity of the focal plane of the lens 70, has an edge 51 capable of defining in the focal plane of the lens 70 a predetermined cutoff profile for the beam emitted by the projector, this cutoff profile being imposed by various legislations.
  • the movable cover 50 is pivotally mounted around a pivot axis Y, generally horizontal and perpendicular to the optical axis X of the projector.
  • the pivoting mounting of the movable cover 50 on the workpiece support 30 of the projector is produced by means of a shaft 54, introduced through the cover 50 in orifices 53 formed on the latter so that the shaft 54 is secured of the cover 50, for example by crimping, the shaft 54 being mounted in two or two bearings hinges 31 and 32 of the support part 30 of the projector so as to be free to rotate in these landings.
  • the movable cover 50 is capable of being moved by tilting means 60, the cover 50 being able to be brought selectively into two positions, a first substantially vertical position in which the edge 51 of the cover 50 is located in the focal plane of the lens 70 on the path of the light rays to form a light beam with a cutoff profile predetermined by the shape of the edge 51, for example a code bundle for right or left traffic, and a second substantially horizontal position in which the edge 51 of the cover is located outside the path of the light rays to form a unbroken light beam, for example a driving beam.
  • the movable cover 50 consists of a blade which has a thickness such that when the cover is positioned substantially horizontally in the road position, it does not or almost does not obscure the light beam emitted by the light source 11 and reflected by the reflector.
  • the means for tilting 60 of the cover 50 around the axis Y includes a means maneuver comprising an actuating rod 61 one end of which is integral with the core 62 of an electromagnet 60, capable of pushing or pulling the rod 61 in a direction substantially parallel to the X axis.
  • the electromagnet 60 comprises a housing 63 in which are located a coil 64 and a core 62 in a conventional manner.
  • the core 62 is movable in translation at inside the housing 63 and it is connected to the end of the actuating rod 61.
  • the housing 63 can be fixed on a base, itself fixed on the support piece 30 or integral with this support piece, the base can also be fixed to the reflector 20.
  • the core 62 is subjected to the action of a return spring 65, which biases the core in a rear rest position.
  • a return spring 65 which biases the core in a rear rest position.
  • the other end of the actuating rod 61 is secured to a tip 66, by example of a generally parallelepiped shape, comprising an oblong lumen 67, extending in a direction substantially perpendicular to the direction of actuation of the rod 61 and to the axis of rotation Y of the cover 50.
  • the light oblong 67 is formed in the actuating rod 61, the latter being for example flattened and pierced with an oblong opening, or by a particular configuration of the rod 61, the latter being for example folded several times on itself in the manner of a paper clip.
  • the oblong light 67 is intended to receive one end of the shaft 54.
  • This end is folded twice in succession at right angles so to form a two-bearing crankshaft, the crankshaft bearing outside the axis of rotation Y of the cover being received in the oblong opening 67 of the endpiece 66 and being susceptible to slide freely in this oblong light.
  • the cover 50 has two lateral tabs 55 which come to bear when the cover 50 returns to its vertical position, against stops 33 formed on lugs of the reflector 20 and passing through openings 34 formed in the nearby support piece 30 edges of the central opening 35 of the support piece 30.
  • the stops 33 thus define precisely with respect to the reflector 20, under the effect of the bias of the return spring 65, the vertical position of the cover 50, so that the edge 51 is located at the focus of the reflector 20 and in the focal plane of the converging lens 70.
  • the intermediate piece 40 also has bearing surfaces 41 on which come in support the side tabs 55 of the cover 50, and which serve as stops limiting the movement of tilting the cover 50 forward.
  • the blade constituting the cover 50 is extended below the axis of rotation Y, and it is integral with a counterweight 52. It can be provided that the counterweight 52 is mounted on the blade or is formed in one piece with this blade.
  • the counterweight 52 has the effect that, in the vertical position of the cover 50, the center of gravity of the blade is located below its axis of rotation Y, and the cover 50 thus tends naturally to be placed in this vertical position.
  • the blade constituting the cover 50 is planar, and the axis of rotation Y of the cover 50 is contained in the plane of the blade, or it is very close to it.
  • the edge 51 passes from an extreme position, for example vertical, to another extreme position, for example horizontal, continuously variable.
  • a "rebound" phenomenon which appears when the edge of the cache cover is located behind the vertical plane passing through the axis of rotation of the cover.
  • the edge of the cover when switching the cache to at the front, the edge of the cover first follows an ascending arc, then a descending arc. This then results in an undesirable movement in the beam emitted by the projector.
  • the illumination limit defined by the edge of the cover in cooperation with the converging lens in cooperation with the converging lens.
  • the particular arrangement according to the present invention of the axis of rotation of the cover 50 avoids such a disadvantage.
  • the present invention is not limited to the embodiment which has been described, but it is on the contrary likely to receive by the skilled person many variants that fall within its scope.
  • the electromagnet is fixed on the intermediate piece and pulls on the cover to tilt it, instead of pushing it as described above.
  • the actuating rod constitutes a rack, meshing with a toothed pinion integral of the cache drive shaft.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP01400639A 2000-03-31 2001-03-12 Scheinwerfer für Kraftfahrzeug, der mehrere Lichtbündelarten erzeugen kann Expired - Lifetime EP1139017B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0004097A FR2807143B1 (fr) 2000-03-31 2000-03-31 Projecteur pour vehicule automobile emettant des faisceaux de profils differents
FR0004097 2000-03-31

Publications (2)

Publication Number Publication Date
EP1139017A1 true EP1139017A1 (de) 2001-10-04
EP1139017B1 EP1139017B1 (de) 2007-01-03

Family

ID=8848702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01400639A Expired - Lifetime EP1139017B1 (de) 2000-03-31 2001-03-12 Scheinwerfer für Kraftfahrzeug, der mehrere Lichtbündelarten erzeugen kann

Country Status (4)

Country Link
EP (1) EP1139017B1 (de)
DE (1) DE60125627T2 (de)
ES (1) ES2279795T3 (de)
FR (1) FR2807143B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2836713A1 (fr) * 2002-03-04 2003-09-05 Koito Mfg Co Ltd Phare de vehicule a obturateur mobile
EP1621810A1 (de) * 2004-07-30 2006-02-01 Valeo Vision Elliptisches optisches Module mit Blende für Kraftfahrzeuge
EP1640658A2 (de) * 2004-09-22 2006-03-29 Automotive Lighting Reutlingen GmbH Scheinwerfer mit mehreren Blenden
CN106989338A (zh) * 2016-01-20 2017-07-28 Aml系统公司 用于机动车辆前照灯的具有可移除截止杠的截止机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806658A1 (de) 1988-03-02 1989-09-14 Huppertz & Schneider Gmbh & Co Scheinwerfer, insbesondere zum einsatz bei fahrzeugen unter tage
JPH0935504A (ja) * 1995-07-17 1997-02-07 Honda Motor Co Ltd 車両用前照灯装置
DE19843287A1 (de) 1997-09-26 1999-04-01 Valeo Vision Scheinwerfer in elliptischer Ausführung mit veränderlichem Lichtbündel, insbesondere für Kraftfahrzeuge
FR2782147A1 (fr) * 1998-08-10 2000-02-11 Valeo Vision Projecteur du type elliptique a cache basculant pour vehicule automobile

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806658A1 (de) 1988-03-02 1989-09-14 Huppertz & Schneider Gmbh & Co Scheinwerfer, insbesondere zum einsatz bei fahrzeugen unter tage
JPH0935504A (ja) * 1995-07-17 1997-02-07 Honda Motor Co Ltd 車両用前照灯装置
DE19843287A1 (de) 1997-09-26 1999-04-01 Valeo Vision Scheinwerfer in elliptischer Ausführung mit veränderlichem Lichtbündel, insbesondere für Kraftfahrzeuge
FR2782147A1 (fr) * 1998-08-10 2000-02-11 Valeo Vision Projecteur du type elliptique a cache basculant pour vehicule automobile

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 06 30 June 1997 (1997-06-30) *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2836713A1 (fr) * 2002-03-04 2003-09-05 Koito Mfg Co Ltd Phare de vehicule a obturateur mobile
DE10309181B4 (de) * 2002-03-04 2009-07-23 Koito Manufacturing Co., Ltd. Fahrzeugscheinwerfer
EP1621810A1 (de) * 2004-07-30 2006-02-01 Valeo Vision Elliptisches optisches Module mit Blende für Kraftfahrzeuge
FR2873788A1 (fr) * 2004-07-30 2006-02-03 Valeo Vision Sa Module optique elliptique a occulteur pour vehicule automobile
US7534019B2 (en) 2004-07-30 2009-05-19 Valeo Vision Elliptical optical module with light shield for a motor vehicle
EP1640658A2 (de) * 2004-09-22 2006-03-29 Automotive Lighting Reutlingen GmbH Scheinwerfer mit mehreren Blenden
EP1640658A3 (de) * 2004-09-22 2007-06-20 Automotive Lighting Reutlingen GmbH Scheinwerfer mit mehreren Blenden
CN106989338A (zh) * 2016-01-20 2017-07-28 Aml系统公司 用于机动车辆前照灯的具有可移除截止杠的截止机构
CN106989338B (zh) * 2016-01-20 2022-01-11 Aml系统公司 用于机动车辆前照灯的具有可移除截止杠的截止机构

Also Published As

Publication number Publication date
EP1139017B1 (de) 2007-01-03
FR2807143B1 (fr) 2002-05-17
DE60125627T2 (de) 2007-10-04
ES2279795T3 (es) 2007-09-01
DE60125627D1 (de) 2007-02-15
FR2807143A1 (fr) 2001-10-05

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