WO2008107433A1

WO2008107433A1 - Headlight

Info

Publication number: WO2008107433A1
Application number: PCT/EP2008/052593
Authority: WO
Inventors: Peter Helbig
Original assignee: Osram Gesellschaft mit beschränkter Haftung
Priority date: 2007-03-08
Filing date: 2008-03-04
Publication date: 2008-09-12
Also published as: DE102007011432A1

Abstract

The invention relates to a headlight, especially for a vehicle, comprising at least one reflector (2) provided with at least one recess (4) for a light source (10) comprising contact strips (6, 8). The electrical contacting of the light source (10) is carried out by means of at least one contact carrier (12). According to the invention, the contact carrier can be directly fixed to the reflector.

Description

200701 981

description

headlights

Technical area

The invention relates to a headlamp, in particular for a vehicle, having at least one reflector which has at least one receptacle for a light source provided with contact lugs, wherein the electrical contact of the light source is effected by means of at least one contact carrier.

State of the art

Such, designed as a vehicle headlamp headlights is known for example from the post-published DE 10 2005 045 765 of the applicant. These conventional headlamps have at least one reflector with receptacles for a respective lamp, for example a Hl, H3, H4 or H7 lamp, which is arranged such that the lamp vessel protrudes into the reflector and the lamp cap with the electrical contact lugs of the lamp outside the reflector is located and is accessible for connecting the supply voltage. The lamps can be fixed by means of a bayonet connection in the receptacle of the reflector, wherein the electrical contacting takes place by means of a contact carrier, which has receptacle contacts arranged in receptacles. When the lamp is screwed into the reflector, the contact lugs of the lamps are each contacted with the socket contacts of the contact carriers (one-touch system). In this solution, the contact carriers are mounted on a common carrier part. For this purpose, the reflector is provided with cylindrical projections which engage with corresponding recesses of the carrier are partly engageable. By means of the projections, the spatial position and orientation of the carrier part and the contact carrier arranged thereon is fixed. The projections are arranged such that the carrier part can only be fixed in the desired position and orientation on the rear side of the reflector. This ensures that the contact lugs of the lamp can interact with the corresponding socket contacts of the respective contact carrier.

A disadvantage of such headlamps is that in addition to the contact carriers support parts are required to position the contact carrier on the reflector, so that such headlights are device-technically complex and therefore expensive to manufacture.

Presentation of the invention

The invention has for its object to provide a headlamp, in which an improved Kontak- tion is possible with minimal device complexity.

This object is achieved by a headlamp, in particular for a vehicle, having at least one reflector which has at least one receptacle for a light source provided with contact lugs, wherein the electrical contacting of the light source is effected by means of at least one contact carrier, wherein the contact carrier is located directly on the Reflector can be fixed. Particularly advantageous embodiments of the invention are described in the dependent claims.

In the solution according to the invention, the contact carrier can be fixed directly to the reflector, so that compared to the prior art according to DE 10 2005 045 765 no Carrier parts in addition to the contact carriers are required to fix the contact carrier to the reflector.

The contact carrier can be designed as a low-cost standard part and placed on an arbitrarily designed reflector.

According to a particularly preferred embodiment of the invention, the reflector has at least one projection which can be brought into engagement with a corresponding recess of the contact carrier for mounting the contact carrier on the reflector. The receptacle of the contact carrier may be formed such that the contact carrier sits with play on the projections. As a result, distortions of the electrical contacts of the lamp with the Auflagereferenzen in the headlight and thus a misalignment are prevented.

The at least one projection extends in a preferred embodiment of the headlight substantially parallel to a reflector longitudinal axis. The axial course of the projections makes it possible to work without sideshifters on the pressing tool for the reflector, so that the service life of the pressing tool is considerably extended and no reworking (deburring, etc.) of the projections is required.

It has proved to be particularly advantageous in terms of production technology if the projection is of cylindrical design at least in sections.

The contact carrier is held at a manufacturing technology simple embodiment of the invention by means of at least one securing element, in particular a securing ring on the projection. This solution has the advantage over screwed solutions that no threads need to be cut in the reflector so that dust does not form. Dust on the surfaces of recycled A-Lectors is very critical. By attaching the contact carrier on the projections and applying the retaining ring a simple, inexpensive installation is guaranteed.

In a particularly preferred embodiment, at least one projection is provided with a non-circular section, in particular a square section, which forms an anti-rotation device together with the corresponding recess of the contact carrier.

Preferably, the at least one projection has a stop surface for limiting the installation depth of the contact carrier.

The light source used is preferably a lamp, in particular a halogen incandescent lamp, which can be fixed to the reflector by means of a bayonet closure. The invention can be used, for example, advantageously in single or double helical halogen lamps which are used in motor vehicle headlights.

According to a particularly preferred embodiment of the invention, the contact lugs are pivoted into the contact carrier, so that the contact lugs of the lamp when inserting the lamp in the reflector are contacted directly with the socket contacts of the contact carrier. Preferably, the Einschwenkebenen the contact lugs are arranged substantially perpendicular to the reflector longitudinal axis parallel to a reference plane of the reflector.

The contact carrier is provided with chamfers, so that this produces no abutting edges, which complicate the insertion of the tabs of the lamp in the socket contacts of the contact carrier. Brief description of the drawings

The invention will be explained in more detail below with reference to a preferred embodiment. Show it:

FIG. 1 shows an exploded view of a headlight according to the invention;

Figure 2 is a detail view of the headlight of Figure 1 and

Figure 3 shows the headlight of Figure 1 in the assembled state.

Preferred embodiment of the invention

The invention will be explained below with reference to a vehicle headlamp. However, the headlight according to the invention is by no means limited to such headlight types.

FIG. 1 shows an exploded view of a headlamp 1 according to the invention designed as a vehicle headlamp. It has a reflector 2 which has a receptacle 4 for a light source 10 provided with contact lugs 6, 8. The light source 10 is a lamp, in particular a single-filament halogen incandescent lamp, which is fixed to the reflector 2 by means of a bayonet closure. The electrical contacting of the lamp 10 takes place by means of a contact carrier 12, which has arranged in recesses 14, 16 socket contacts (not shown). The electrical connection cables, not shown, of the socket contacts are guided through correspondingly placed openings 18, 20 in the contact carrier 12. The contact lugs 6, 8 are pivoted during the screwing of the lamp 10 in the Baj onettverschluss in the contact carrier 12, so that the tabs 6, 8 of the lamp 10 are contacted directly with the socket contacts of the contact carrier 12. The Einschwenkebenen the contact lugs 6, 8 are arranged substantially perpendicular to a reflector longitudinal axis 22 parallel to a reference plane 24 of the reflector 2. According to the invention, the contact carrier 12 can be fixed directly on the reflector 2, so that no carrier parts are required in addition to the contact carriers 12 in order to fix the contact carrier 12 to the reflector 2. This will be explained in more detail below with reference to Figure 2, which shows an individual view of the headlamp 1 of Figure 1.

As can be seen in particular Figure 2, the reflector 2 has two pin-shaped projections 26, 28 which are for mounting the contact carrier 12 on the reflector 2 in engagement with corresponding recesses 30, 32 of the contact carrier 12 can be brought. The pin-shaped projections 26, 28 extend approximately parallel to the reflector longitudinal axis 22. As manufacturing technology, it has proven to be particularly advantageous if one of the projections 26 is cylindrical and has a radially recessed contact surface 34 for limiting the installation depth of the contact carrier 12. The contact carrier 12 has a fastening section 36 which is adapted to the cross-section of the contact surface 34 and can be fixed to the cylindrical projection 26 by means of a securing element, for example a securing ring 38. The second projection 28 is provided with a non-circular section designed as a square section 40 and has a radially recessed contact surface 42 for limiting the installation depth of the contact carrier 12.

As can be seen from FIG. 3, which shows the headlight 1 from FIG. 1 in the mounted state, the recess 32 of the contact carrier 12 is for the square section 40 approximately U-shaped with two parallel legs 52, 54 is formed. The square section 40 of the projection 28 is received in a form-fitting manner in the U-shaped recess 32. The recesses 30, 32 of the contact carrier 12 and / or the position of the securing ring 38 may be formed or arranged such that the contact carrier 12 with play on the projections 26, 28 sits. As a result, distortions of the electrical contacts of the lamp 10 held by means of bayonet closure with the bearing references in the headlight 1 and thus a misalignment are prevented.

The Baj onettverschluss consists according to Figure 2 essentially of a mounting opening 44, the edge of which is provided with three mutually offset by approximately 120 ° each other recesses 46 for receiving three locking tabs of the lamp 10 (see Figure 1), not shown. The recesses 46 are limited by locking portions 48. For mounting the lamp 10 in the headlight 1, this is inserted into the mounting opening 44, so that the locking tabs of the lamp 10 engage in the recesses 46 of the reflector 2. By means of a quarter turn around the lamp longitudinal axis, the lamp 10 is fixed in the mounting hole 44 by the locking tabs slide on ramps not shown on the locking portions 48. The ramps complicate a rotational movement of the lamp 10 in the direction of rotation and prevent an automatic unlocking of the bayonet lock. The arrangement of the locking tabs of the lamp 10 and the locking portions 48 of the reflector 2 ensure that the contact lugs 6, 8 (see Figure 1) of the lamp 10 are pivoted when screwing the lamp 10 in the contact carrier 12. The recesses 14, 16 of the contact carrier 12 are provided with chamfers 50, so that it does not produce abutting edges, the insertion of the Kon- tact flags 6, 8 in the socket contacts of the contact carrier 12 complicate.

Disclosed is a headlight 1, in particular for a vehicle, with at least one reflector 2, which has at least one receptacle 4 for a contact lugs 6, 8 provided light source 10, wherein the electrical contacting of the light source 10 by means of at least one contact carrier 12 takes place. According to the invention, the contact carrier 12 can be fixed directly to the reflector 2.

Reference sign list

1 headlight

2 reflector

4 recording

6 contact lugs

8 contact flag

10 light source

12 contact carriers

14 recess

16 recess

18 breakthrough

20 breakthrough

22 reflector longitudinal axis

24 reference level

26 advantage

28 lead

30 recess

32 recess

34 contact area

36 attachment section

38 securing element

40 square section

42 contact surface

44 mounting opening

46 recess

48 locking section

50 insertion bevel

52 thighs

54 thighs

Claims

claims

1. Headlamp, in particular for a vehicle, having at least one reflector (2), the at least one receptacle (4) for a contact lugs (6, 8) provided with light source (10), wherein the electrical contact of the light source (10 ) by means of at least one contact carrier (12), characterized in that the contact carrier (12) directly to the reflector (2) can be fixed.

2. Headlight according to claim 1, wherein the reflector (2) has at least one projection (26, 28) for mounting the contact carrier (12) on the reflector (2) in engagement with a corresponding recess (30, 32) of the contact carrier ( 12) can be brought.

3. Headlight according to claim 2, wherein the at least one projection (26, 28) extends substantially parallel to a reflector longitudinal axis (22).

4. Headlight according to claim 2 or 3, wherein the at least one projection (26) is at least partially formed cylindrically shaped.

5. Headlight according to one of claims 2 to 4, wherein the at least one projection (28) has a non-circular section, in particular a square section (40).

6. Headlight according to one of claims 2 to 5, wherein the at least one projection (26, 28) has a contact surface (34, 42) for limiting the installation depth of the contact carrier (12).

7. Headlight according to one of claims 2 to 6, wherein the contact carrier (12) by means of at least one See- ing element (38), in particular a retaining ring, is held on the projection (26).

8. Headlight according to one of the preceding claims, wherein the light source (10) by means of a bayonet lock on the reflector (2) can be fixed.

9. Headlight according to one of the preceding claims, wherein the contact lugs (6, 8) in the contact carrier (12) can be pivoted.

10. Headlight according to one of the preceding claims, wherein the contact carrier (12) has at least one insertion bevel (50).

11. Headlight according to one of the preceding claims, wherein the light source (10) is a lamp, in particular a halogen incandescent lamp.