EP0548555B1 - Projecteur pour véhicule - Google Patents

Projecteur pour véhicule Download PDF

Info

Publication number
EP0548555B1
EP0548555B1 EP92119881A EP92119881A EP0548555B1 EP 0548555 B1 EP0548555 B1 EP 0548555B1 EP 92119881 A EP92119881 A EP 92119881A EP 92119881 A EP92119881 A EP 92119881A EP 0548555 B1 EP0548555 B1 EP 0548555B1
Authority
EP
European Patent Office
Prior art keywords
reflector
opening
arm
shape
headlamp according
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
EP92119881A
Other languages
German (de)
English (en)
Other versions
EP0548555A1 (fr
Inventor
Hubert Borgschulte
Franz-Josef Schäfers
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 EP0548555A1 publication Critical patent/EP0548555A1/fr
Application granted granted Critical
Publication of EP0548555B1 publication Critical patent/EP0548555B1/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
    • F21S41/47—Attachment thereof

Definitions

  • Such a headlight for vehicles is known from DE-GM 83 10 535.
  • the shading device arranged between the light source and the lens is cup-shaped.
  • the light source formed by an incandescent lamp partially projects into the cup-shaped shading device.
  • the cup-shaped shading device has an integrally formed arm on opposite outer edge sections, which passes through the opening of the reflector and only with the radially outwardly bent section on the outer edge region the opening of the reflector.
  • the bulb has on its base a fixed, circumferential retaining ring which, when the bulb is inserted from the rear of the headlight, presses into the opening of the reflector with its outer surface against the section of the respective arm passing through the opening of the reflector.
  • the shading device is easy to install, since in a first working step the shading device with the U-shape of its arm is to be placed like a clamp on the opening edge, and in a second working step the retaining ring is to be inserted into the opening from the back of the headlight .
  • the retaining ring When inserting the retaining ring into the opening of the reflector, the retaining ring beaks with the side facing the reflector on the outer leg of the U-shape and then presses the portion of the U-shape connecting the legs towards the opening edge and thus the inner sides of the legs against the respective opening edge of the reflector.
  • the section connecting the legs of the U-shape of the arm radially passes through the recess of the retaining ring or the opening edge with play, at least between the retaining ring and the arm there is no tight interference fit.
  • the retaining ring z. B. is fixed by a permanent connection to the reflector.
  • the section of the U-shape of the arm connecting the legs is made slightly shorter than the distance between the outer and inner opening edge against which the legs of the U-shape rest.
  • the radial force with which the retaining ring presses the legs against the respective opening edge is as small as possible, and deformation of the reflector is thus largely excluded.
  • the inner leg of the U-shape is flat on the inner Border area of the opening of the bowl-shaped reflector abuts. As a result, the shading device is held precisely in relation to the light source.
  • the outer leg has a smaller cross section than the inner leg of the U-shape.
  • the shading device is held on the reflector largely free of vibrations.
  • the opening of the reflector is surrounded by a collar or, in the case of a reflector made of plastic, the wall thickness is made correspondingly thick.
  • a further advantage is if the retaining ring on the side facing the inside of the reflector has a run-up slope for the arm of the diaphragm and the legs of the U-shape are spread apart.
  • Such an inclined slope of the retaining ring or an inclined outer leg serves for the retaining ring as a threading aid when inserting the retaining ring into the opening of the reflector.
  • the recess for the arm which is introduced into the retaining ring, rests on the outer leg of the U-shape of the arm with an inner side facing the headlight, and the inner side of the recess, which is in contact with the free leg, of an intersecting surface that runs transverse to the arm is formed.
  • the inside of the depression facing the reflector serves as a stop for the retaining ring.
  • the depression of the retaining ring is made approximately as wide in the circumferential direction as the section of the U-shape passing through it. As a result, the retaining ring is fixed against possible twisting.
  • the retaining ring is formed by a hollow cylinder, which protrudes outwards with an end section from the opening of the reflector.
  • the end portion protruding from the opening serves as a handle when inserting the retaining ring into the opening of the reflector.
  • the retaining ring is provided with fastening means for a retaining spring with which the incandescent lamp can be fixed in the opening of the reflector.
  • the retaining ring is provided on its end section projecting outward from the opening of the reflector with a radially projecting projection, between the and the outer edge region of the opening of the reflector the holding spring for the light source is pivotable with a section is held.
  • the side of the retaining ring opposite the pivot bearing of the retaining spring has a fastening means on which a free end of the retaining spring can be detachably fixed.
  • the shader carry two arms which run above the horizontal center plane of the headlight.
  • the shading device does not extend below the horizontal central plane of the headlight and is nevertheless intended to be connected to the reflector in a very firm and vibration-free manner.
  • the dish-shaped reflector (1) shown in FIGS. 1 to 3 is made of sheet metal, and the opening (2) made at the apex of the reflector (1) is surrounded by the collar (3) pointing towards the rear of the reflector (1).
  • the opening (2) of the reflector (1) from the back of the reflector is the shape of a hollow cylinder executed and made of sheet metal retaining ring (4) introduced.
  • the outside diameter of the retaining ring (4) corresponds approximately to the inside diameter of the opening (2) of the reflector (1).
  • the retaining ring (4) overlaps with a wall section with the entire collar (3) and projects with the end section (5) towards the rear of the reflector (1) out of the opening (2).
  • the retaining ring After inserting the retaining ring (4) into the opening (2) of the reflector (1), the retaining ring is inseparably connected to the collar (3) of the reflector (1) by the depressions (6) pressed into its inside, since material of the Retaining ring (4) is pressed into the inside of the collar (3) of the reflector (1) by plastic deformation.
  • the incandescent lamp (7) is inserted into the opening (2) of the reflector (1) from the rear of the reflector (1).
  • the base (8) of the incandescent lamp (7) has the flags (9) serving as locking means.
  • the flags (9) are directed radially outwards and engage in the recess (10) of the retaining ring (4) which is open towards the rear of the reflector (1).
  • the recesses (10) are so deep that the flags do not rest on the base of the recess (10), but on the end face (11) of the collar (3) surrounding the opening (2) of the reflector (1).
  • the cutouts in the end face (11) of the collar (3) are made approximately as wide as the flag (9) engaging in them is wide.
  • One of the cutouts (10) has in the facing sides the undercut (12) against which the U-shaped retaining spring (13) rests with the free ends of its legs (14).
  • the retaining ring (4) together with the end face (11) of the collar (3) of the reflector (1) forms a pivot bearing for the legs (14) of the retaining spring ( 13) connecting web (15).
  • the web (15) lies against the end face (11) of the collar (3) and is in this position by the outside of the retaining ring (4) attached projection (16) held captive.
  • the two legs (14) of the U-shaped retaining spring (13) have in the middle approximately a section bent towards the base (8) of the incandescent lamp (7), with which they bear against the base (8) under pre-tension and thus the flags ( 9) of the base (8) against the end face (11) of the collar (3).
  • the shader (17) shields the light rays of the incandescent lamp (7), which run directly from the incandescent lamp to the front and upwards.
  • the shader (17) is made of sheet metal and has the arm (18) passing through the opening (2) of the reflector (1).
  • the free end section of the arm (18) is U-shaped, and its legs (19 and 20) which extend apart from one another surround the edge of the opening (2) of the reflector (1).
  • the section (21) connecting the legs (19 and 20) of the U-shape of the arm (18) lies against the base of the depression (22) made from the outside in the retaining ring (4).
  • the inner leg (20) of the U-shape of the arm (18) lies flat against the bowl-shaped reflection surface (23) of the reflector (1), and the outer leg lies against that formed by the end face (11) of the collar (3) outer edge of the opening (2) of the reflector (1).
  • On the outside of the leg (19) of the arm (18) lies the recess (22) with the inside formed by the cut surface (24).
  • the recess (22) in the retaining ring (5) is approximately as wide as the arm (18).
  • the retaining ring (4) is shown before it is inserted into the opening (2) of the reflector (3).
  • the retaining ring (4) snaps with its ramp (25) onto the outer leg (19) of the U-shape of the arm (18) and presses against it further insertion into the opening (2) the section (21) connecting the legs (19 and 20) towards the collar (3) until it rests against the base of the recess (22).
  • the section (21) is made slightly shorter than the inside of the opening (2) of the reflector (1) is wide, it is always ensured that after inserting the retaining ring (4) into the opening (2) of the reflector (1 ) the inner leg (20) lies flat against the reflection surface (23) of the reflector (1), the outer leg (19) bending outwards.
  • the retaining ring (4) can be inserted into the opening (2) of the reflector (1) until, with the inside (24) of its recess (22) on the outside of the outer leg (19), which is used to fix it in the Recess (26) of the collar (3) is caught, stops.
  • the reflector (1) is made of plastic and so thick that the arm (18) of the shader (17) without a collar surrounding the opening (2) of the reflector (1) (as in of the embodiment according to FIGS. 1 to 3) can be rigidly connected to the reflector (1).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (17)

  1. Projecteur pour des véhicules automobiles, présentant les éléments suivants :
    - une plaque d'éclairage transparente recouvre la surface de sortie de lumière d'un réflecteur (1) en forme de coque,
    - dans le réflecteur (1) en forme de coque est ménagée une ouverture (2) qui sert à la réception d'une source lumineuse (7),
    - entre la source lumineuse (7) et la plaque d'éclairage est agencé un diaphragme (17) qui sert à former un écran pour au moins une partie des rayons lumineux sortant directement de la source lumineuse (7) hors du projecteur,
    - le diaphragme (17) est porté par au moins un bras (18) qui traverse par son extrémité libre l'ouverture (2) du réflecteur (1) et qui saisit par l'arrière la région de bordure extérieure de l'ouverture (2) du réflecteur (1) par un tronçon (19) coudé radialement vers l'extérieur,
    - une bague de retenue (4) qui entoure la source lumineuse (7) presse le bras (18) contre la bordure de l'ouverture (2) du réflecteur (1), caractérisé en ce que :
    - la bague de retenue (4) est un élément séparé bloqué sur le réflecteur (1),
    - le tronçon final libre du bras (18) est réalisé en forme de U et entoure, par les ailes (19 et 20) de la forme en U, la bordure de l'ouverture (2) du réflecteur (1),
    - l'une des deux ailes (19) de la forme en U est captée dans un évidement (26) du réflecteur (1) pour la fixation,
    - dans la face intérieure de l'ouverture (2) du réflecteur (1) ou dans la surface enveloppe de la bague de retenue (4) est ménagée une cavité (22) qui sert à la réception du tronçon (21) reliant les ailes (19 et 20) de la forme en U du bras (18),
    - la bague de retenue (4) s'appuie contre le tronçon (21) reliant les ailes (19 et 20) de la forme en U et presse les ailes (19 et 20) contre la région de bordure respective de l'ouverture (2) du réflecteur (1).
  2. Projecteur selon la revendication 1, caractérisé en ce que le tronçon (21) reliant les ailes (19 et 20) de la forme en U du bras (18) présente une longueur légèrement inférieure à la distance entre la bordure extérieure et la bordure intérieure de l'ouverture (2) du réflecteur (1) contre lequel s'appuient les ailes (19 et 20) de la forme en U.
  3. Projecteur selon l'une ou l'autre des revendications 1 et 2, caractérisé en ce que l'aile extérieure (19) présente une section transversale moins importante que l'aile intérieure (20) de la forme en U du bras (18).
  4. Projecteur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'aile intérieure (20) de la forme en U du bras (18) s'appuie à plat contre la région de bordure intérieure de l'ouverture (2) du réflecteur (1) en forme de coque.
  5. Projecteur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'ouverture (2) du réflecteur (1) est entourée par un col (3).
  6. Projecteur selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la bague de retenue (4) présente sur la face orientée vers l'intérieur du réflecteur une rampe de montée (25) pour le bras (18) du diaphragme (17).
  7. Projecteur selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les ailes (19 et 20) de la forme en U s'étendent en écartement l'une de l'autre.
  8. Projecteur selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la cavité (22) ménagée dans la bague de retenue (4) pour le bras (18) s'appuie par une face intérieure (24) orientée vers le projecteur contre l'aile extérieure (19) de la forme en U du bras (18).
  9. Projecteur selon la revendication 8, caractérisé en ce que la face intérieure (24) de la cavité (22) s'appuyant contre l'aile extérieure (19) est formée par une surface de coupe s'étendant transversalement par rapport au bras (18).
  10. Projecteur selon l'une quelconque des revendications 1 à 9, caractérisé en ce que la cavité (22) de la bague de retenue (4) est approximativement aussi large en direction périphérique que le tronçon (21) qui la traverse de la forme en U du bras (18).
  11. Projecteur selon l'une quelconque des revendications 1 à 10, caractérisé en ce que la bague de retenue (4) est formée par un cylindre creux qui dépasse vers l'extérieur par un tronçon final (5) hors de l'ouverture (2) du réflecteur (1).
  12. Projecteur selon la revendication 11, caractérisé en ce que dans le tronçon final (5) de la bague de retenue (4) dépassant vers l'extérieur hors de l'ouverture (2) du réflecteur (1) sont ménagés des évidements (10) qui ont une profondeur telle que des moyens d'arrêt de la source lumineuse (7) ne s'appuient pas contre le fond de l'évidement (10), mais contre la région de bordure extérieure de l'ouverture (2) du réflecteur (1).
  13. Projecteur selon l'une quelconque des revendications précédentes 1 à 12, caractérisé en ce que la bague de retenue (4) est pourvue de moyens de fixation pour un ressort de retenue (13) au moyen duquel la source lumineuse (7) peut être bloquée dans l'ouverture (2) du réflecteur (1).
  14. Projecteur selon la revendication 13, caractérisé en ce que la bague de retenue est pourvue, sur son tronçon final (5) dépassant vers l'extérieur hors de l'ouverture du réflecteur, d'une saillie (16) dépassant radialement vers l'extérieur, et entre celle-ci et la région de bordure extérieure de l'ouverture (2) du réflecteur (1) est maintenu en basculement le ressort de retenue (13) pour la source lumineuse par un tronçon (15).
  15. Projecteur selon la revendication 14, caractérisé en ce que la face de la bague de retenue (4) opposée à ce palier de basculement présente un moyen de fixation sur lequel une extrémité libre du ressort de retenue (13) peut être bloquée de façon détachable.
  16. Projecteur selon l'une quelconque des revendications 1 à 15, caractérisé en ce que le diaphragme (17) est porté par deux bras (18).
  17. Projecteur selon la revendication 16, caractérisé en ce que les bras s'étendent au-dessus du plan médian horizontal du projecteur.
EP92119881A 1991-12-21 1992-11-23 Projecteur pour véhicule Expired - Lifetime EP0548555B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4142536A DE4142536A1 (de) 1991-12-21 1991-12-21 Scheinwerfer fuer fahrzeuge
DE4142536 1991-12-21

Publications (2)

Publication Number Publication Date
EP0548555A1 EP0548555A1 (fr) 1993-06-30
EP0548555B1 true EP0548555B1 (fr) 1995-03-15

Family

ID=6447856

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92119881A Expired - Lifetime EP0548555B1 (fr) 1991-12-21 1992-11-23 Projecteur pour véhicule

Country Status (3)

Country Link
EP (1) EP0548555B1 (fr)
DE (2) DE4142536A1 (fr)
ES (1) ES2069958T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0900973A2 (fr) 1997-09-06 1999-03-10 Hella KG Hueck & Co. Projecteur pour véhicule

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4334719B4 (de) * 1993-10-12 2004-07-29 Robert Bosch Gmbh Fahrzeugscheinwerfer
US5402325A (en) * 1993-12-28 1995-03-28 General Motors Corporation Vehicle headlamp assembly
FR2749239B1 (fr) * 1996-05-30 1998-08-21 Valeo Vision Projecteur, notamment pour vehicule automobile, presentant une structure mecanique perfectionnee
DE19814788B4 (de) * 1998-04-02 2009-01-29 Automotive Lighting Reutlingen Gmbh Fahrzeugscheinwerfer für Abblendlicht und Fernlicht
FR2783037B1 (fr) * 1998-09-04 2000-12-29 Valeo Vision Procede de montage d'un occulteur dans un projecteur de vehicule automobile, et projecteur equipe des moyens de montage correspondants
FR2807142B1 (fr) 2000-03-29 2002-05-31 Const Electromecaniques Thome Dispositif pour la fixation d'une lampe et d'un occulteur a un reflecteur de projecteur de vehicule automobile

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1180026A (en) * 1966-06-13 1970-02-04 Lucas Industries Ltd Vehicle Lamps.
FR2312727A1 (fr) * 1975-05-27 1976-12-24 Cibie Projecteurs Projecteur pour vehicule automobile
EP0111579A1 (fr) * 1982-12-17 1984-06-27 Ichikoh Industries Limited Projecteur de véhicule
DE8310535U1 (de) * 1983-04-11 1983-09-08 Comind S.p.A., Robassomero, Torino Kraftfahrzeugscheinwerfer mit blendschutzschirm
US4882660A (en) * 1986-11-13 1989-11-21 General Motors Corporation Headlamp assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0900973A2 (fr) 1997-09-06 1999-03-10 Hella KG Hueck & Co. Projecteur pour véhicule

Also Published As

Publication number Publication date
DE4142536A1 (de) 1993-06-24
ES2069958T3 (es) 1995-05-16
DE59201663D1 (de) 1995-04-20
EP0548555A1 (fr) 1993-06-30

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