EP0355529B1 - Abgeblendeter Fahrzeugscheinwerfer nach dem Projektionsprinzip - Google Patents

Abgeblendeter Fahrzeugscheinwerfer nach dem Projektionsprinzip Download PDF

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Publication number
EP0355529B1
EP0355529B1 EP89114442A EP89114442A EP0355529B1 EP 0355529 B1 EP0355529 B1 EP 0355529B1 EP 89114442 A EP89114442 A EP 89114442A EP 89114442 A EP89114442 A EP 89114442A EP 0355529 B1 EP0355529 B1 EP 0355529B1
Authority
EP
European Patent Office
Prior art keywords
lens
retaining lugs
retaining
frame
vehicle headlamp
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
EP89114442A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0355529A2 (de
EP0355529A3 (en
Inventor
Reinhold Brummel
Horst Jackenkroll
Dieter Wagener
Franz-Josef Böckeler
Axel Buchhorn
Hubert Marks
Karl Witte
Wolfgang Gossmann
Diethard Schnelle
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 EP0355529A2 publication Critical patent/EP0355529A2/de
Publication of EP0355529A3 publication Critical patent/EP0355529A3/de
Application granted granted Critical
Publication of EP0355529B1 publication Critical patent/EP0355529B1/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
    • F21S41/50—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
    • F21S41/55—Attachment 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—Attachment thereof
    • F21S41/295—Attachment thereof specially adapted to projection lenses
    • 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 vehicle headlight is known from DE-PS 35 16 812.
  • the lens When the lens is inserted into the frame, it is guided from the light exit side through the opening in the frame and rests with its rear side on inwardly bent lugs of the frame.
  • a snap ring is then inserted between the edge region of the opening, which tapers in the direction of light exit, and the peripheral edge of the lens, which securely fixes the lens in the frame.
  • the snap ring not only is the snap ring necessary as an additional component for fixing the lens in the frame, but it is also not always certain that the lens, for. B. because of larger tolerance deviations, especially in the thickness of the lens edge can be set without play in the frame.
  • the lens is simple and easy to assemble, since the lens can be inserted into the frame from the light exit side and can also be attached to the frame from the light exit side.
  • the first retaining tabs are bent radially inward until their free ends abut approximately on the edge of the lens.
  • the lens is not held rattle-free in the frame by the first retaining tabs, since these spring back a small amount after being bent over.
  • the second retaining tab prevents the respective first retaining tab from springing back.
  • the second retaining tab is also bent radially inward until it rests on the outside of the bent-over end section of the first retaining tab and bends it in the insertion direction of the lens with elastic deformation to such an extent that, after the second retaining tab springs back, the free end of the first retaining tab is pretensioned the edge of the lens.
  • a lens is also held in the frame without rattling if the lens edge has a different thickness, since both the first and the second retaining tabs are bent as a function of a predetermined force.
  • the angled end sections of the first retaining tabs are convex so that their corners rest on the free edge of the lens edge.
  • the first retaining spring can spring back by a larger amount after the second retaining tabs have been bent over, without its free end lifting off the lens edge.
  • the second retaining tab is cut free from the central region of the first retaining tab.
  • the two are lateral A second retaining tab is cut free at the edge regions of the first retaining tab.
  • the end face of the first retaining tab extends in an arc that is open toward the lens and whose center lies approximately on the center line of the lens.
  • the contact surface for the first retaining tabs on the lens edge can be relatively small in the radial direction, and nevertheless the tight fit of the lens in the frame is secure.
  • the drawing shows a dimmed vehicle headlight, which essentially consists of an ellipsoidal reflector (1) and an aperture (3) arranged between the convex lens (2) and the reflector (1).
  • the internal reflection surface of the reflector (1) forms a semi-ellipse in its axial longitudinal sections.
  • the filament (4) of the incandescent lamp (5) is arranged in the focal point of the semi-ellipses.
  • the diaphragm edge (6) of the diaphragm (3) which generates the light-dark boundary is arranged in the focal point of the lens (2).
  • the ellipsoidal reflector (1) has an opening (7) on the apex for receiving an annular lamp holder (8).
  • the incandescent lamp (5) is inserted into the lamp holder (8) from the rear of the reflector and is pressed against the outside of the lamp holder (8) by the wire spring (9) with its radially outwardly projecting flange.
  • a cap (10) made of rubber is placed on the lamp holder (8).
  • the diaphragm (3) is made in one piece with a frame (11) made of sheet metal, the arms (12) of which are firmly connected to the edge region of the reflector (1). Between the arms (12) of the frame, the frame has a surface (13) for receiving the lens (2) inserted into the frame from the light exit side. The central region of the surface (13) receiving the lens (2) is pulled through in a first step in the deep-drawing process to form a dome-shaped bulge (3) in the direction of the reflector (1). The diameter of the outer edge of the spherical bulge (3) is slightly smaller than the outer diameter of the lens (2). A cutout, which extends into the side walls of the frame (11), is cut out from the upper and lower edge of the opening (14) receiving the light bulb (5).
  • the contact surface of the lens is simultaneously pulled in the direction of the reflector and is formed by a circular ring surface (15) which is offset in steps towards the reflector (1).
  • the first and second retaining tabs (16 and 17) formed on the outer edge of the surface (13) with their free end sections become Lens center bent towards.
  • the retaining tabs are bent radially inwards to such an extent that the lens (2) can be passed between them.
  • first and four second retaining tabs (16 and 17) are cut out of the outer edge of the surface (13) of the frame that receives the lens (2).
  • the second retaining tab (17) is cut free from the central region of the first retaining tab (16).
  • the cutting edge (22) of the first retaining tab corresponding to the end edge (21) of the second retaining tab (17) is spaced radially outward relative to the lens edge (20).
  • the bending line (18) of the first holding tabs (16) and the bending line (19) of the second holding tabs (17) are at a distance from a tangent of the lens edge (20) projecting outward in a flange-like manner and run parallel to this tangent.
  • the bending line (18) of the first retaining tabs (16) is at a greater distance from the lens edge (20) than the bending line (19) of the second retaining tabs (17).
  • the lens (2) can be inserted into the frame (11) from the light exit side and lies with its rear side on the support surface (15). Then, in a first step, the first retaining tab (16) is bent towards the lens center until its free end lies against the lens edge (20) of the lens.
  • the second retaining tab (17) is bent towards the lens center until it abuts the cut edge (22) of the first retaining tab (16) and bends the first retaining tab in the direction of insertion of the lens (2) until the second spring springs back Retaining flap (21), the first retaining flap (16) still bears on the lens edge (20) with a sufficiently large pretension.
  • the angled free end section is convex toward the outside.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP89114442A 1988-08-13 1989-08-04 Abgeblendeter Fahrzeugscheinwerfer nach dem Projektionsprinzip Expired - Lifetime EP0355529B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3827593 1988-08-13
DE3827593A DE3827593A1 (de) 1988-08-13 1988-08-13 Abgeblendeter fahrzeugscheinwerfer nach dem projektionsprinzip

Publications (3)

Publication Number Publication Date
EP0355529A2 EP0355529A2 (de) 1990-02-28
EP0355529A3 EP0355529A3 (en) 1990-12-12
EP0355529B1 true EP0355529B1 (de) 1993-11-10

Family

ID=6360840

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89114442A Expired - Lifetime EP0355529B1 (de) 1988-08-13 1989-08-04 Abgeblendeter Fahrzeugscheinwerfer nach dem Projektionsprinzip

Country Status (3)

Country Link
EP (1) EP0355529B1 (enrdf_load_stackoverflow)
DD (1) DD284079A5 (enrdf_load_stackoverflow)
DE (1) DE3827593A1 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2753148B1 (fr) * 1996-09-06 1998-12-04 Valeo Vision Projecteur pour vehicule automobile a assemblage simplifie
JPH10199305A (ja) * 1997-01-10 1998-07-31 Koito Mfg Co Ltd 投射型ランプ
DE19738831A1 (de) * 1997-09-05 1999-05-20 Hella Kg Hueck & Co Scheinwerfer für Fahrzeuge
ITTO980102A1 (it) * 1998-02-10 1999-08-10 Magneti Marelli Spa Proiettore per autoveicoli
EP2385298A1 (de) 2010-05-07 2011-11-09 Hella KGaA Hueck & Co. Projektionsmodul für Fahrzeuge

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1256795B (de) * 1964-05-15 1967-12-21 Westfaelische Metall Ind K G H Kontakteinrichtung fuer die elektrische Gluehlampe von Kraftfahrzeugleuchten
DE2846241A1 (de) * 1978-10-24 1980-05-08 Rodenstock Optik G Anordnung zum elastischen festhalten von optischen linsen in ihren fassungen
DE3516812A1 (de) * 1985-05-10 1986-11-13 Hella KG Hueck & Co, 4780 Lippstadt Abgeblendeter fahrzeugscheinwerfer
DE3884631T2 (de) * 1987-01-14 1994-01-27 Ichiko Industries Ltd Vorrichtung zum Einstellen der optischen Achse eines Fahrzeugscheinwerfers.

Also Published As

Publication number Publication date
DD284079A5 (de) 1990-10-31
EP0355529A2 (de) 1990-02-28
EP0355529A3 (en) 1990-12-12
DE3827593C2 (enrdf_load_stackoverflow) 1990-05-17
DE3827593A1 (de) 1990-02-15

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