EP0429922B1 - Scheinwerfer nach dem Projektionsprinzip - Google Patents

Scheinwerfer nach dem Projektionsprinzip Download PDF

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Publication number
EP0429922B1
EP0429922B1 EP90121477A EP90121477A EP0429922B1 EP 0429922 B1 EP0429922 B1 EP 0429922B1 EP 90121477 A EP90121477 A EP 90121477A EP 90121477 A EP90121477 A EP 90121477A EP 0429922 B1 EP0429922 B1 EP 0429922B1
Authority
EP
European Patent Office
Prior art keywords
diaphragm
operating lever
headlamp according
arm
reflector
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
EP90121477A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0429922A1 (de
Inventor
Werner Jablotschkin
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 EP0429922A1 publication Critical patent/EP0429922A1/de
Application granted granted Critical
Publication of EP0429922B1 publication Critical patent/EP0429922B1/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
    • F21S41/686—Blades, i.e. screens moving in a vertical plane
    • 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
    • F21S41/62—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution for adaptation between right-hand and left-hand traffic

Definitions

  • the adjustable diaphragm lies flat against a fixed diaphragm and can be adjusted into the two end positions about a pivot axis running parallel to the optical axis of the headlight. In both end positions, the diaphragm edge of the adjustable diaphragm, together with the diaphragm edge of the fixed diaphragm, creates the light-dark boundary of the light beam emerging from the headlight.
  • the adjustable cover is held in an end position by a tension spring.
  • an electrical or hydraulic adjusting device is articulated on it, by means of which the adjustable diaphragm is pressed into its other end position against the force of the tension spring and must be held in this.
  • the adjustable diaphragm In this end position, the adjustable diaphragm is only positioned precisely when the diaphragm is completely and precisely adjusted.
  • the adjustment of the aperture by an electrical adjustment device is very complex.
  • a headlight in which the diaphragm is adjustable by a two-armed actuating lever.
  • the lever is pivotally mounted on the headlamp housing and has a slot at the free end of one arm, in which a pin rigidly connected to the panel engages, while the free end of the other arm has a slot in which a rigidly with an electrical adjustment device connected pin engages.
  • the diaphragm lies in one end position outside the light beam emerging from the reflector, while in the other end position the diaphragm edge of the diaphragm generates the light-dark boundary of the light beam emerging from the headlight. The latter end position is only accurate if the adjustment of the diaphragm is carried out completely and precisely.
  • the pins of the adjustable diaphragm and the electrical adjustment device must engage with play in the slots of the actuating lever so that they can be moved in the slots.
  • this does not keep the adjustable diaphragm free of vibrations.
  • the assembly of the actuating lever and the electrical adjusting device is very cumbersome and time-consuming, since the actuating lever must be pivotally attached to the headlight housing and in the headlight housing with both its one free end with the adjustable panel and with its other free end with the electrical adjusting device pair is.
  • the diaphragm is held free of vibration by the spring in both end positions. Furthermore, it is certain that the adjustable diaphragm always takes exactly the same position in its two end positions. In addition, in order to be able to operate the actuating lever, in addition to the opening in the rear of the headlight housing which serves to replace the bulbs, no further opening has to be made in the headlight housing.
  • Claim 15 claims a very stable actuating lever, in which, according to claim 16, the end section serving as a handle can be held securely by hand.
  • the area between the arm and the bearing journal can be designed to be resilient transversely to the direction of adjustment that both a rigid arm and a rigid bearing journal bear against the contact surfaces of the reflector edge under prestress.
  • an actuating lever is proposed, which is very easy to assemble.
  • Claims 19 to 21 propose a headlight in which a simple compression spring holds the adjustable diaphragm very precisely in its end positions.
  • the compression spring When the adjustable diaphragm is pivoted, the compression spring is continuously compressed up to a certain pressure point. When the pressure point is reached, the end sections of the compression spring are at the shortest distance from one another. After the pressure point has been exceeded, the distance between the end sections of the compression spring increases until the adjustable diaphragm lies against the fixed stop. After the pressure point of the compression spring has been exceeded, the compression spring swings it into its own due to the force acting on the adjustable diaphragm End position. As a result, there can be a lot of play between the two-armed actuating lever and the adjustable cover.
  • the headlight housing (1) In the headlight housing (1), the front opening of which is closed by the lens (2) and the rear opening of which is closed by the cap (3), there is one made of an ellipsoidal reflector (4), a lens (5) and one between the lens ( 5) and the reflector (4) arranged fixed first panel (6) and adjustable second panel (7) existing unit.
  • the reflector (4) has the opening (8) at the apex for receiving the incandescent lamp (9).
  • the frame (11) carrying the lens (5) is attached to the outer reflector edge (10).
  • the first panel (6) and the frame (11) are made in one piece from sheet metal.
  • the diaphragm edge (12) of the first diaphragm (6) is arranged approximately in the focal point of the lens (5) and has a profile which is common for a headlight for right-hand traffic.
  • the diaphragm edge (12) has a horizontal one first part, which forms the section of the cut-off line lying on the side of the oncoming traffic, and a second part descending to the horizontal, which forms the other section of the cut-off line.
  • the sheet metal second diaphragm (7) bears on the main surface of the first diaphragm (6) facing the lens (5) and perpendicular to the optical axis.
  • the second diaphragm (7) can be pivoted about an axis (14) running parallel to the optical axis into two end positions, the upper one being an active position and the lower one being a rest position (see FIG. 4).
  • the diaphragm edge (13) of the second diaphragm (7) lies below the diaphragm edge (12) of the fixed diaphragm
  • the diaphragm edge (13) of the second diaphragm (7) lies above the part of the diaphragm edge that falls horizontally (12) of the second diaphragm (6) and, seen in the light exit direction, merges into the horizontally running part of the stationary diaphragm edge (12).
  • the pivot axis (14) runs below the fixed diaphragm edge (12).
  • the second diaphragm (7) has a downwardly cut free tongue (15) which engages with play in the slot (16) of an actuating lever (17) pivotably mounted on the lower reflector edge (10).
  • the two-armed actuating lever (17) can be pivoted about the axis (18), its arm (19) forming the slot (16) through a fork-shaped free end, while the free end (21) of its arm (20) forms the base of the incandescent lamp (9) is adjacent and serves as a handle for the operating lever (17). Between the handle and the swivel bearing, the lever bears against the back of the reflector (4).
  • the actuating lever (17) made of plastic tapers starting from the pivot bearing towards the handle and has stiffening ribs (22) extending in its longitudinal extent, of which the stiffening rib is interrupted in the area of the handle.
  • the reflector edge (10) of the reflector (4) made of plastic consists of a radially outwardly directed flange and a wall (23) molded onto the circumferential edge of the flange and pointing towards the rear of the headlight.
  • the narrow side surface of the wall (23) forms a bearing shell (24) which is open towards the rear of the headlight.
  • the bearing pin (25) pointing towards the reflector (4) engages in the bearing shell (24), on the side of which facing away from the bearing shell (24) a stiffening rib (37) is formed.
  • the bearing journal (25) has on its free end section the thickening (26) with which it engages behind the wall (23) in a self-locking manner.
  • the wall (27) On the outward-facing flange of the reflector edge (10), the wall (27) is formed on the side directed in the light exit direction, the narrow side surface of which runs in an arc, the center of which lies on the pivot axis (18). On the narrow side surface of the wall (27) rests an arm (28) molded onto the actuating lever (20), which engages behind the wall (27) with its thickening (29).
  • the actuating lever (17) After installing the actuating lever (17), after the tongue (15) of the adjustable diaphragm (7) engages in the slot (16), the actuating lever (17) has to be moved to the rear of the headlight until the thickening (29) of the resilient arm engages behind the wall (27).
  • the second diaphragm (7) is held by the compression spring (32) either in the upper or in the lower end position.
  • One free end section of the compression spring is fastened to the fixed pin (33) and with the other end to the pin (34) of the adjustable diaphragm (7).
  • the pin (34) projects through a longitudinal slot (35) in the stationary diaphragm (6).
  • the longitudinal slot describes an arc, the center of which lies on the pivot axis (14) of the adjustable diaphragm (7).
  • the narrow side surfaces of the longitudinal slot (35) serve as stops (36) for the pin (34) of the adjustable diaphragm (7).
  • the pin (33) of the fixed diaphragm (6) lies on a line, which goes through the pivot axis (14) and passes centrally between the two stops (36).

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)
  • Projection Apparatus (AREA)
EP90121477A 1989-12-01 1990-11-09 Scheinwerfer nach dem Projektionsprinzip Expired - Lifetime EP0429922B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3939710A DE3939710C1 (enrdf_load_stackoverflow) 1989-12-01 1989-12-01
DE3939710 1989-12-01

Publications (2)

Publication Number Publication Date
EP0429922A1 EP0429922A1 (de) 1991-06-05
EP0429922B1 true EP0429922B1 (de) 1994-01-19

Family

ID=6394563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90121477A Expired - Lifetime EP0429922B1 (de) 1989-12-01 1990-11-09 Scheinwerfer nach dem Projektionsprinzip

Country Status (3)

Country Link
EP (1) EP0429922B1 (enrdf_load_stackoverflow)
DE (1) DE3939710C1 (enrdf_load_stackoverflow)
ES (1) ES2047804T3 (enrdf_load_stackoverflow)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05347101A (ja) * 1992-06-12 1993-12-27 Stanley Electric Co Ltd プロジェクタ型灯具
DE4233032A1 (de) * 1992-10-01 1994-04-07 Hella Kg Hueck & Co Scheinwerfer für Fahrzeuge
DE4243174C2 (de) * 1992-12-19 2002-06-27 Bosch Gmbh Robert Kraftfahrzeugscheinwerfer mit einer verstellbaren Blendenanordnung
DE4407108C2 (de) * 1993-06-30 2003-03-13 Bosch Gmbh Robert Fahrzeugscheinwerfer mit einer verstellbaren Blendenanordnung
FR2721685B1 (fr) * 1994-06-23 1996-09-13 Valeo Vision Projecteur automobile, en particulier à réflecteur elliptique, produisant un faisceau susceptible de deux coupures sélectivement commutables.
FR2727496A1 (fr) * 1994-11-30 1996-05-31 Valeo Vision Projecteur automobile, en particulier a reflecteur elliptique, produisant un faisceau susceptible de deux coupures selectivement commutables
DE59712677D1 (de) 1997-08-08 2006-07-27 Hella Kgaa Hueck & Co Scheinwerfereinheit mit Blendenanordnung und Schaltvorrichtung für die Blendenanordnung
DE10022235B4 (de) * 2000-05-08 2006-07-13 Hella Kgaa Hueck & Co. Schaltvorrichtung für eine Blendenanordnung
FR2809803B1 (fr) * 2000-05-31 2002-09-06 Valeo Vision Projecteur de vehicule automobile a ecran mobile
FR2809801B1 (fr) * 2000-05-31 2002-09-06 Valeo Vision Projecteur pour vehicule automobile a ecran d'occultation associe a un ressort de rappel
DE102005012303B4 (de) * 2005-03-17 2015-11-26 Automotive Lighting Reutlingen Gmbh Scheinwerfer
DE102009041265A1 (de) * 2009-09-11 2011-03-24 Huang, Hsian-Yi Steuervorrichtung für Fern- und Abblendlicht eines Scheinwerfers

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1660699A (en) * 1926-02-23 1928-02-28 American Woodlite Corp Headlight control
NL7103591A (enrdf_load_stackoverflow) * 1970-03-20 1971-09-22
GB1504513A (en) * 1974-03-05 1978-03-22 Lucas Electrical Ltd Vehicle lamp unit
DE3719638A1 (de) * 1987-06-12 1988-12-29 Bosch Gmbh Robert Abblendlichtscheinwerfer
DE3806658A1 (de) * 1988-03-02 1989-09-14 Huppertz & Schneider Gmbh & Co Scheinwerfer, insbesondere zum einsatz bei fahrzeugen unter tage

Also Published As

Publication number Publication date
DE3939710C1 (enrdf_load_stackoverflow) 1991-05-29
ES2047804T3 (es) 1994-03-01
EP0429922A1 (de) 1991-06-05

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