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EP0935727B1 - Projecteur pour vehicules - Google Patents

Projecteur pour vehicules Download PDF

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Publication number
EP0935727B1
EP0935727B1 EP98945302A EP98945302A EP0935727B1 EP 0935727 B1 EP0935727 B1 EP 0935727B1 EP 98945302 A EP98945302 A EP 98945302A EP 98945302 A EP98945302 A EP 98945302A EP 0935727 B1 EP0935727 B1 EP 0935727B1
Authority
EP
European Patent Office
Prior art keywords
screen
reflector
lens
locking
locking elements
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
EP98945302A
Other languages
German (de)
English (en)
Other versions
EP0935727A1 (fr
Inventor
Arnulf WÄSCHER
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
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 Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP0935727A1 publication Critical patent/EP0935727A1/fr
Application granted granted Critical
Publication of EP0935727B1 publication Critical patent/EP0935727B1/fr
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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • 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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/47—Attachment thereof

Definitions

  • the invention relates, as indicated in the preamble of claim 1, to a headlight for vehicles with a reflector a light source arranged in a focal point of the reflector, with a front of the Reflector arranged lens, with a arranged between reflector and lens and panel made of sheet metal, the edge of the panel crossing the cut-off line created a light figure and with a frame supporting the lens and the aperture.
  • a Headlight for vehicles is known from EP 0 200 928 A2.
  • a Light unit of the headlight consists of an ellipsoidal reflector, one arranged inside the reflector and a light source in front of the reflector arranged and attached to the outer peripheral edge of the reflector Frame, which has a lens and one between lens and reflector Aperture is wearing.
  • An incandescent lamp or a gas discharge lamp can be used as the light source serve.
  • the frame is made from a deep-drawn sheet. Leave deep-drawn sheets deform plastically well and therefore have a very low elasticity.
  • the Frame has a support ring manufactured in the deep-drawing process, in which of the lens from the front of the light unit and the lens in the support ring locking ring is used.
  • the support legs are in one piece with the support ring executed, which are fixed to the outer edge of the reflector.
  • the aperture is via an arm-shaped holding element, which is between two supporting legs of the frame is arranged in one piece with the support ring.
  • the aperture is one of a bending area of the arm-shaped holding element to the pivot point Lens pivoted.
  • the panel is plate-shaped and runs in one plane perpendicular to the light exit direction. The one running in the plane
  • the diaphragm edge of the diaphragm lies in a focal point of the lens and generates one Light-dark boundary of a light figure in the lighting system.
  • the one level running aperture has angled towards the lens at its lateral free ends free end sections, which on the adjacent legs by Laser welding can be fixed.
  • the attachment of the panel to the support legs can also be done by soldering, riveting or screwing.
  • the bezel snaps into place with the support legs is not due to insufficient elasticity of the deep-drawing sheet possible.
  • the end sections of the panel to be locked on the support legs be very long. Here, however, the spring force would be very small and therefore there is no secure locking of the panel to the frame.
  • the lighting system is used to generate fog light.
  • Such lighting systems build much smaller than those that generate asymmetrical light Lighting systems and because of their small size they usually have an aperture, whose diaphragm edge is curved.
  • the arched one Diaphragm edge is formed by a diaphragm, which is a cylindrical wall section.
  • the lens and the aperture are from the side of the reflector into the one with the Reflector connected frame used and on the support ring of the frame set.
  • the headlamp is arcuate Cover made of die-cast zinc and has molded rivets through which the panel can be fixed to the frame. The manufacture of such an aperture is costly and their assembly cumbersome and time consuming.
  • the object of the invention is that described in the preamble of claim 1 To design headlights for vehicles in such a way that the cover on the frame, without having to use an additional fastener, automatically on the Frame can be fixed with a large holding force.
  • the aperture with Aperture edge runs in an arc shape and is a resilient arch part that is attached to its free ends through locking elements engaging in locking openings with the frame is connected and holds the locking elements in the locking openings.
  • the aperture is due to its arcuate course, even an expansion spring, which is simple and is easy to insert into the frame.
  • the aperture does not have to, as in the case of the EP 0 200 928 A2 and DE 35 35 249 A1 headlights with their
  • the diaphragm edge can be adjusted in relation to the lens, because after the Aperture with the frame there is a certain distance from the edge of the aperture to the lens.
  • the diaphragm is the spreading spring itself due to its arcuate shape then also one at the free end sections locked to the frame sufficiently large travel when on a sheet with very little Elasticity is established.
  • the bezel is made like that the EP 0 200 928 A2 known headlights for vehicles, in one piece with the Frame is made of deep-drawn sheet metal. Thermoformed sheets are good plastic deformable and thus have a very small elasticity. You can also Panels made of sheet metal with good plastic deformation, be made so thick-walled that the high resulting at the diaphragm edge Heat is dissipated well via the panel and the frame.
  • the arch formed by the panel is designed as long as possible and the with free ends of the bezel locked to the frame are as far as possible spaced apart when the free ends of the arcuate bezel lie adjacent to a surface in which the diaphragm edge runs. This is a very large spring force and a large spring travel of the aperture on their free Given ends.
  • the panel is when it is mounted from the side of the reflector, without dealing with the Hook frame, easily and quickly locked to the frame when the Latching elements of free ends of the arcuate angled towards the reflector Aperture are formed.
  • the arc-shaped cover is caught in the assembly not possible because the locking elements have a bending area directed towards the lens have, which slides along the frame until the locking elements of the panel engage automatically in the locking openings of the frame.
  • the edge of the aperture is very precisely spaced from the lens, if the angled locking elements of the panel with their rounded Bending area resilient on the inner edge of the reflector Locking opening of the frame and with the narrow towards the reflector Side surface on the narrow inner surface of the latch opening directed towards the lens issue.
  • the locking elements When the locking elements snap into the locking openings, they slide Locking elements with their bending area on the inner facing the reflector Edge of the locking openings along until the locking elements with their towards the reflector directed narrow side surface on the narrow towards the lens Hit the inside surface of the locking opening.
  • the aperture is on in the vertical direction the frame locked exactly when the locking elements with a little play between the narrow inner surfaces of the Engage the locking opening. A small game is necessary, otherwise an automatic one Intervention of the locking elements in the locking opening is not possible.
  • the depth of the reflector, the lens, the panel and the frame The light unit is very small when it engages in the locking openings Locking elements between the free ends of the arcuate panel and the one Support frame of the frame that holds the lens.
  • the aperture exert a very large spring force on the frame without the frame on the Latching points undergo plastic deformation.
  • the bezel is easy to assemble when between the arcuate bezel and there is a pivoting point around the frame, around which the panel can be locked is pivoted towards the lens with the frame.
  • the pivot point can be from one existing plug connection between the panel and frame. Farther there is a third in addition to the locking points due to the pivot point Breakpoint between cover and frame.
  • the aperture edge is also towards the lens in an existing between the locking element and the locking openings Clearance spaced very precisely to the lens when the pivot point of one Area of a one-piece connecting the arcuate diaphragm with the support ring Holding element is formed, by which a spring back of the angled Aperture towards the reflector and a resilient contact of the locking elements on one Inner surface of the locking openings.
  • the angled diaphragm springs back is given because after angling the arcuate aperture towards the lens resilient restoring force exists.
  • the headlight for vehicles has a cup-shaped housing (18) and one Transparent translucent front of the pot-shaped housing Cover disc (19).
  • the outer lens (19) dips circumferential edge in a receiving bed (20) of the housing (18) and is in the Recording bed (20) glued to the housing (18).
  • a lighting system for fog light is formed by the light unit shown in FIGS. 1 and 2, which is much smaller than the lighting system for asymmetrical Dimmed headlights.
  • the light unit for fog light has an ellipsoidal one made of sheet metal Reflector (1), in the inner focal point of which a light source (2) is arranged.
  • the Light source (2) is formed by a lamp (21) with its glass bulb ahead through an opening (22) in the apex area of the reflector (1).
  • a deep-drawn sheet manufactured frame (6) with support legs (23) attached.
  • the support legs (23) are in their longitudinal extension stiffening grooves (24) are provided in one piece with a support ring (15) of the frame (6) receiving the lens (3) connected.
  • the lens (3) is in the support ring (15) from the side of the reflector and a snap ring (25) holding the lens (3) in the support ring (15).
  • the lens (3) lies with a peripheral outer flange on the front edge (26) of the support ring (15) and the one lying on the inside of the lens (3)
  • the snap ring (25) is supported on the holding tabs (27) of the support ring which are set inwards (15).
  • the convex front of the lens (3) dips into an opening in a Cover part (28).
  • the panel (4) is integral with the arm-shaped holding element (17) Carrying ring (15) of the frame (6) executed.
  • the holding element (17) is below the optical axis of the light unit between two supporting legs (23) of the frame (6) arranged.
  • In the arm-shaped holding element (17) are two stiffening channels (29) brought in.
  • the aperture (4) is of a cylindrical sheet metal section with very Small elasticity is formed and is a spring due to its large expansion Arc. It is sufficient if the resilient bow unites at its free ends Has travel that corresponds approximately to the wall thickness of the diaphragm (4).
  • the aperture (4) has an aperture edge (5) which extends in a horizontal surface and tapers towards their free ends.
  • the free ends of the panel (4) are for outer edge of the reflector (1) bent out and serve as locking elements (8).
  • the Locking elements (8) adjoin the surface in which the diaphragm edge (5) of the The aperture (4) extends and engages in rectangular locking openings (7) in the support ring (15) a.
  • the locking openings (7) are punched out of the support ring (15) and point one towards the lens (3) and serving as a stop for the locking elements (8) narrow inner surface (13).
  • the horizontally running narrow inner surfaces (14) of the latching opening (7) adjoin the latching element (8) and hold it Locking element (8) in the vertical direction.
  • Locking opening (7) slide the locking elements (8) with the outer surface of their rounded bending area (10) on the inner edge (11) of the latching opening (7), which faces the reflector (1) along until the locking element (8) by the resilient restoring force of the holding element (17), with it towards the reflector towards the narrow side surface (12) on the towards the lens (3) rests narrow inner surface (13) of the latching opening (7).
  • the arm-shaped holding element (17) of the panel (4) has a pivot point (16) for the aperture (4) serving bending area around which the aperture (4) towards the lens is pivoted.

Landscapes

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

Claims (10)

  1. Projecteur pour véhicules comportant un réflecteur (1), une source lumineuse (2) agencée dans un foyer du réflecteur (1), une lentille (3) agencée devant le réflecteur (1), un obturateur (4) en tôle agencé entre le réflecteur (1) et la lentille (3), dont l'arête d'obturateur (5) engendre la limite de clair-obscur d'un motif lumineux, et un cadre (6) portant la lentille (3) et l'obturateur (4), caractérisé en ce que l'obturateur (4) s'étend en forme d'arc avec son arête d'obturateur (5) et forme une partie d'arc à effet ressort qui est reliée à ses extrémités libres au cadre (6) par des éléments d'enclenchement (8) s'engageant dans des ouvertures d'enclenchement (7) et qui retient les éléments d'enclenchement (8) dans les ouvertures d'enclenchement (7).
  2. Projecteur selon la revendication 1, caractérisé en ce que l'obturateur (4) en forme d'arc se rétrécit vers ses extrémités libres (8).
  3. Projecteur selon l'une ou l'autre des revendications 1 et 2, caractérisé en ce que l'obturateur (4) en forme d'arc présente au moins une rainure de renforcement (8) en renfoncement qui s'étend vers les extrémités libres (8) de l'obturateur (4) en forme d'arc.
  4. Projecteur selon la revendication 1, 2 ou 3, caractérisé en ce que les extrémités libres (8) de l'obturateur (4) en forme d'arc se trouvent au voisinage d'une surface dans laquelle s'étend l'arête d'obturateur (5).
  5. Projecteur selon l'une des revendications 1 à 4, caractérisé en ce que les éléments d'enclenchement (8) sont formés par des extrémités libres, coudées vers le réflecteur (1), de l'obturateur en forme d'arc (5).
  6. Projecteur selon la revendication 5, caractérisé en ce que les éléments d'enclenchement (8) coudés de l'obturateur (4) sont en appui avec leur région de courbure (10) arrondie, de manière élastique sur l'arête intérieure (11), dirigée vers le réflecteur (1), des ouvertures d'enclenchement (7) du cadre (6), et sont en appui avec leur surface latérale (12) étroite dirigée vers le réflecteur (1), sur la surface intérieure (13) étroite, dirigée vers la lentille (3), de l'ouverture d'enclenchement (7).
  7. Projecteur selon l'une des revendications 1 à 6, caractérisé en ce que les éléments d'enclenchement (8) sont adjacents aux surfaces latérales (14) étroites de l'ouverture d'enclenchement (7), qui s'étendent en direction de sortie de la lumière.
  8. Projecteur selon l'une des revendications 1 à 7, caractérisé en ce que les éléments d'enclenchement (8) s'engageant dans les ouvertures d'enclenchement (7) sont prévus entre les extrémités libres (éléments d'enclenchement (8)) de l'obturateur (4) en forme d'arc et une bague porteuse (15) du cadre (6), laquelle reçoit la lentille (3).
  9. Projecteur selon l'une des revendications 1 à 8, caractérisé en ce qu'entre l'obturateur (4) en forme d'arc et le cadre (6) se trouve un point de pivotement autour duquel l'obturateur (4) est pivoté vers la lentille (3) jusqu'à son enclenchement avec le cadre (6).
  10. Projecteur selon la revendication 9, caractérisé en ce que le point de pivotement (16) est formé par une région de courbure d'un élément de retenue (17) reliant d'un seul tenant l'obturateur (4) en forme d'arc avec la bague porteuse (15), et ledit élément de retenue permet un retour élastique de l'obturateur (4) coudé, vers le réflecteur (1), et un appui élastique des éléments d'enclenchement (8) sur une surface intérieure (13) des ouvertures d'enclenchement (7).
EP98945302A 1997-09-05 1998-09-02 Projecteur pour vehicules Expired - Lifetime EP0935727B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19738831A DE19738831A1 (de) 1997-09-05 1997-09-05 Scheinwerfer für Fahrzeuge
DE19738831 1997-09-05
PCT/EP1998/005552 WO1999013264A1 (fr) 1997-09-05 1998-09-02 Projecteur pour vehicules

Publications (2)

Publication Number Publication Date
EP0935727A1 EP0935727A1 (fr) 1999-08-18
EP0935727B1 true EP0935727B1 (fr) 2003-05-14

Family

ID=7841290

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98945302A Expired - Lifetime EP0935727B1 (fr) 1997-09-05 1998-09-02 Projecteur pour vehicules

Country Status (8)

Country Link
US (1) US6099157A (fr)
EP (1) EP0935727B1 (fr)
CN (1) CN1104585C (fr)
AT (1) ATE240486T1 (fr)
BR (1) BR9806162A (fr)
DE (2) DE19738831A1 (fr)
ES (1) ES2196603T3 (fr)
WO (1) WO1999013264A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO980102A1 (it) * 1998-02-10 1999-08-10 Magneti Marelli Spa Proiettore per autoveicoli
JP3995151B2 (ja) * 2002-07-01 2007-10-24 株式会社小糸製作所 自動車用前照灯
CN101629701B (zh) * 2008-07-18 2011-01-19 上海小糸车灯有限公司 一种用于实现特定光形的遮光板
FR2975752B1 (fr) * 2011-05-25 2018-11-16 Aml Systems Barrette de coupure pour faisceau d'une source lumineuse

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1834542A (en) * 1929-04-23 1931-12-01 Karlebo Karl Birger Dimming device for headlights for automobiles and the like
US4636923A (en) * 1984-08-03 1987-01-13 Stanley Electric Co., Ltd. Headlamp for vehicle
DE3535249C2 (de) 1984-10-18 1987-03-12 Hella KG Hueck & Co, 4780 Lippstadt Abgeblendeter Fahrzeugscheinwerfer
DE3516813A1 (de) * 1985-05-10 1986-11-13 Hella KG Hueck & Co, 4780 Lippstadt Abgeblendeter fahrzeugscheinwerfer
DE3529546C1 (de) * 1985-08-17 1987-02-05 Hella Kg Hueck & Co Abgeblendeter Fahrzeugscheinwerfer mit einem ellipsoidfoermigen Reflektor
JPH0320961Y2 (fr) * 1986-12-23 1991-05-08
DE3827594A1 (de) * 1988-08-13 1990-02-15 Hella Kg Hueck & Co Verfahren zur herstellung und nach dem verfahren hergestelltes gestell fuer einen fahrzeugscheinwerfer nach dem projektionsverfahren
DE3827593A1 (de) * 1988-08-13 1990-02-15 Hella Kg Hueck & Co Abgeblendeter fahrzeugscheinwerfer nach dem projektionsprinzip
JP2691945B2 (ja) * 1990-05-18 1997-12-17 株式会社小糸製作所 車輌用前照灯
JPH0821243B2 (ja) * 1990-06-19 1996-03-04 株式会社小糸製作所 投射型自動車用ヘッドランプ
JP2655741B2 (ja) * 1990-06-25 1997-09-24 株式会社小糸製作所 投射型自動車用ヘッドランプ
GB2249825B (en) * 1990-10-15 1994-06-22 Koito Mfg Co Ltd Vehicular headlamp
FR2687760B1 (fr) * 1992-02-24 1999-08-27 Valeo Vision Projecteur a lentille, notamment pour vehicule automobile, comportant des moyens perfectionnes de montage de la lentille.
DE4225303A1 (de) * 1992-07-31 1994-02-03 Bosch Gmbh Robert Scheinwerfer für Kraftfahrzeuge
DE4421354C1 (de) * 1994-06-17 1995-12-07 Bosch Gmbh Robert Halterungs- und Reflektoraufbau für einen verschwenkbaren Reflektor für einen Fahrzeugscheinwerfer
DE4421355C2 (de) * 1994-06-17 1996-06-05 Bosch Gmbh Robert Verstellanordnung für einen Reflektor für einen Fahrzeugscheinwerfer

Also Published As

Publication number Publication date
DE19738831A1 (de) 1999-05-20
CN1104585C (zh) 2003-04-02
WO1999013264A1 (fr) 1999-03-18
ATE240486T1 (de) 2003-05-15
DE59808354D1 (de) 2003-06-18
CN1237238A (zh) 1999-12-01
EP0935727A1 (fr) 1999-08-18
BR9806162A (pt) 1999-10-19
ES2196603T3 (es) 2003-12-16
US6099157A (en) 2000-08-08

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