EP0359059B1 - Scheinwerfer - Google Patents

Scheinwerfer Download PDF

Info

Publication number
EP0359059B1
EP0359059B1 EP89116162A EP89116162A EP0359059B1 EP 0359059 B1 EP0359059 B1 EP 0359059B1 EP 89116162 A EP89116162 A EP 89116162A EP 89116162 A EP89116162 A EP 89116162A EP 0359059 B1 EP0359059 B1 EP 0359059B1
Authority
EP
European Patent Office
Prior art keywords
shaped
retaining spring
reflector
headlamp according
opening
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
EP89116162A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0359059A3 (en
EP0359059A2 (de
Inventor
Reinhold Brummel
Klaus Mohsakowski
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 EP0359059A2 publication Critical patent/EP0359059A2/de
Publication of EP0359059A3 publication Critical patent/EP0359059A3/de
Application granted granted Critical
Publication of EP0359059B1 publication Critical patent/EP0359059B1/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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/196—Wire spring attachments

Definitions

  • the invention relates to a headlamp, with a reflector and the opening in the reflector for receiving an incandescent lamp, which has a plate-shaped base which rests on the opening edge of the reflector and is pressed against the opening edge by a retaining spring, which is W-shaped and the free legs of which are connected to the opening edge of the reflector, one leg forming a hinge and the other leg engaging with the reflector, and the central region of the W-shape spans the center contact of the incandescent lamp without contact.
  • an incandescent lamp can be installed canted with its base and can also be clamped in this position with the retaining spring. This is due to the length of the spring, its bending shape and its relatively low rigidity.
  • the object of the invention is therefore a fastening described in the preamble of claim 1 the bulb in the opening of the reflector of a headlamp in such a way that it is impossible to incorrectly insert the bulb by tilting or twisting. It should also be irrelevant for the tight fit of the retaining spring, whether pressure is exerted axially on the retaining spring from behind or laterally. In addition, the release or engagement of the retaining spring should be possible in a user-friendly, uncomplicated manner.
  • this object is achieved in that a tongue is cut freely from the two legs of the U-shaped central part of the retaining spring, which rest with their free ends under tension on the plate-shaped base of the incandescent lamp, wherein between the arcuate transitions from the U -shaped middle part to the free legs and the plate-shaped base of the incandescent lamp remains a small gap in the installed state. If, for example, the axial pressure from behind increases on the retaining spring, the retaining spring can yield to the extent that the gap has reduced to zero and that the arched transitions on the base of the incandescent lamp create an incomparably stronger counterforce due to the great rigidity of the Retaining spring is effective.
  • this condition prevents the cut tongues from bending over. Even when the arcuate transitions are in contact with the plate-shaped base, the retaining spring remains locked in the hooking area due to the pretension. The great rigidity of the retaining spring also prevents the retaining spring from being able to be closed or locked when the lamp base is tilted, since the elasticity over the length of the spring is insufficient for this.
  • the locking elements determining the exact installation position are tongue-shaped, their free ends serving as pivoting and locking elements for the retaining spring and the locking element having a hook-shaped cutout in the lateral opening edge and the pivoting element being T-shaped.
  • These locking elements determine by their length in conjunction with the dimensions of the cut tongues the bias that acts on the plate-shaped base of the incandescent lamp, on the other hand, they allow the uncomplicated quick handling of the spring when closing or opening, but also contribute to the fact that it does not it is possible to clamp a tilted lamp base, and it is also very economical to manufacture these elements as stamped molded parts.
  • the one free leg of the retaining spring is cut out and rolled in a U-shape and the free legs of the U-shape are rolled in so far that a gap remains that is slightly narrower than the thickness of the T-shaped Free cut.
  • the other free leg of the retaining spring has an opening for latching with the hook-shaped cut-out in the opening edge of the reflector, the edge of the latching opening cooperating with the locking element being raised opposite to the closing direction of the retaining spring.
  • the web connecting the two legs of the central U-shaped part is of flat design and has an extension which is parallel to the pivot axis and is designed as a flat plug. This allows the ground plug to be inserted cost-effectively into the design of the retaining spring and, in the event of tensile or compressive loads, ensures that the retaining spring cannot unintentionally release from the catch.
  • the headlight consists essentially of the reflector (1) and the lens, but not shown, glued to it, an opening (2) in the apex of the reflector (1), into which the light bulb (9) is inserted.
  • a plate-shaped base (4) of the light bulb (9) lies against the opening edge (3) of the reflector (1) and is spanned by the W-shaped retaining spring (5).
  • Two free legs (6, 7) of the retaining spring (5), one leg being hinge-like (6) and the other leg forming a snap-in connection (7) with the reflector (1), are also included connected to the opening edge (3).
  • the central area (8) of the W-shaped retaining spring (5) spans the center contact (21) of the incandescent lamp (9) without contact.
  • a tongue (10) is cut free from two legs of a U-shaped central part (8) of the retaining spring (5), the tongues (10) of which rest with their free ends (11) under prestress on the plate-shaped base (4) of the light bulb (9).
  • a small gap (13) remains between two arcuate transitions (12) from the U-shaped central part (8) to the free legs (6, 7) and the plate-shaped base (4) of the incandescent lamp (9).
  • Two locking elements which determine the exact installation position, are tongue-shaped and serve the free legs (6, 7) of the retaining spring (5) for fastening, a hook-shaped free cut (14) of the reflector (1) and a T-shaped pivot element (15) are arranged in the lateral opening edge (3).
  • the free leg (6) of the retaining spring (5) is suspended in the T-shaped pivot element (15).
  • the free leg (6) is cut freely in a U-shape and rolled up from the ends to such an extent that a gap (16) remains which is slightly narrower than the thickness of the pivot element (15). This prevents the retaining spring (5) from unintentionally detaching in the unlocked state.
  • the free leg (7) of the retaining spring (5) is fastened in the hook-shaped free cut (14), in which it has a latching opening (17) for the hook-shaped free cut (14), the edge (18) of the latching opening (18) cooperating with the locking element ( 17) is raised against the closing direction of the retaining spring (5).
  • a web (19) connecting the two legs of the central U-shaped part (8) has a flat surface and has an extension (20) running parallel to the swivel axis and designed as a flat plug.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
EP89116162A 1988-09-15 1989-09-01 Scheinwerfer Expired - Lifetime EP0359059B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3831371A DE3831371A1 (de) 1988-09-15 1988-09-15 Scheinwerfer
DE3831371 1988-09-15

Publications (3)

Publication Number Publication Date
EP0359059A2 EP0359059A2 (de) 1990-03-21
EP0359059A3 EP0359059A3 (en) 1990-08-16
EP0359059B1 true EP0359059B1 (de) 1993-12-08

Family

ID=6363003

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89116162A Expired - Lifetime EP0359059B1 (de) 1988-09-15 1989-09-01 Scheinwerfer

Country Status (4)

Country Link
EP (1) EP0359059B1 (enrdf_load_stackoverflow)
DD (1) DD284740A5 (enrdf_load_stackoverflow)
DE (1) DE3831371A1 (enrdf_load_stackoverflow)
ES (1) ES2047075T3 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4334722A1 (de) * 1993-10-12 1995-04-13 Bosch Gmbh Robert Elektrische Kontaktierung einer Lichtquelle
DE9417304U1 (de) * 1994-10-28 1994-12-22 Hella Kg Hueck & Co, 59557 Lippstadt Fahrzeugleuchte

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2117755A (en) * 1936-03-02 1938-05-17 Kingston Products Corp Electric lightting device
FR1391962A (fr) * 1964-01-30 1965-03-12 Machal Projecteurs Dispositif de fixation amovible d'une lampe dans un projecteur
FR2555824B1 (fr) * 1983-11-30 1986-05-23 Cibie Projecteurs Dispositif de montage et de fixation d'une lampe, notamment pour projecteur d'automobile
DE3606538C1 (en) * 1986-02-28 1987-04-16 Hella Kg Hueck & Co Mounting an incandescent lamp in the opening of a reflector of a vehicle headlight

Also Published As

Publication number Publication date
EP0359059A3 (en) 1990-08-16
DE3831371C2 (enrdf_load_stackoverflow) 1990-09-27
ES2047075T3 (es) 1994-02-16
DD284740A5 (de) 1990-11-21
EP0359059A2 (de) 1990-03-21
DE3831371A1 (de) 1990-03-22

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