WO2008107435A1

WO2008107435A1 - Headlight

Info

Publication number: WO2008107435A1
Application number: PCT/EP2008/052611
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: DE102007011431A1

Abstract

The invention relates to a headlight (1), especially for a vehicle, comprising at least one reflector (2) provided with at least one receiving element (4) for a light source (10) comprising contact strips (6, 8), the electrical contacting of the light source being carried out by means of at least one contact carrier (12) comprising socket contacts (18) arranged in recesses (14, 16). According to the invention, the contact strips of the light source are received in the recesses of the contact carrier with axial play in relation to the longitudinal axis (20) of the reflector.

Description

Confession

headlights

Technical area

The invention relates to a headlight, insbesonde- re for a vehicle, with at least one reflector which has at least one receptacle for a with contact lugs shipping ^¬ HeNe light source, wherein the electrical contacting of the light source by at least one contact ^¬ carrier is made, the in Having recesses arranged socket contacts.

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 headlamp having at least one reflector having a receptacle for a lamp, for example, an HL, H3, H4 or H7 lamp, which is arranged such that the lamp vessel projects into the reflector and the Lam ^¬ pensockel with the electrical Contact lugs of the lamp is outside the reflector and is accessible for connecting the Ver ^¬ supply voltage. In this solution, the lamps can be fixed by means of a bayonet connection in the receptacle of the reflector, wherein the electrical contacting of the lamps 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 lamp are contacted directly with the socket contacts of the contact carrier (one-touch system). A disadvantage of such headlamps is that during screwing the lamp into the bayonet mount of the reflector to mechanical stresses between the

Contact lugs of the lamp and the socket contacts of the contact carrier can come.

Presentation of the invention

The invention has for its object to provide a headlamp, in which an improved Kontak- tierung with minimal manufacturing complexity is made light.

This object is achieved by a headlight, in particular for a vehicle, with at least one reflectors ^¬ gate, having at least one receptacle for a provided with Kontaktfah ^¬ NEN light source, wherein the electrical contacting of the light source by means of at least one Kon ^¬ balance carrier, which in Having recesses arranged Fas ^¬ sungskontakte. According to the invention the contact ^¬ flags of the light source relative to the reflector axis with axial play in the recesses of the contact carrier are taken up. Particularly advantageous embodiments of the invention are described in the dependent claims.

In the solution according to the invention, the recesses and socket contacts are designed such that the contact ^¬ flags of the lamp are arranged floating in the recesses. As a result, the socket contacts during the screwing of the lamp on the tabs of the lamp from ^¬ judge, so that compared to the prior art according to DE 10 2005 045 765 tension between the lamp and the reflector are prevented.

According to a particularly preferred embodiment of the invention, the contact lugs are in the contact carrier einschwenkbar, 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 Kontaktfah- NEN are arranged substantially perpendicular to the reflector longitudinal axis parallel to a reference plane of the reflector.

The recesses and socket contacts point in an embodiment in the direction of the light source and approximately perpendicular to an opening for laterally inserting the tabs in the contact carrier.

It has proved to be particularly advantageous if the socket contacts are substantially U-shaped. The contact lugs of the lamp are in particular ^{¬ taken up} in the U-shaped socket contacts, so that a two-sided electrical contact with ver ^¬ ringertem contact resistance is achieved. The contacts are preferably provided from a material having spring properties according gu ^¬ th and to achieve the required values for the contact resistance with the corresponding surface.

In one embodiment of the invention, the U-shaped socket contacts are integrally ^¬ arranged in the recesses in such a way that the closed part of the U-shaped contact on the front side of the contact spring of the light bulb is Toggle. With such an arrangement, for example, a gas-tight contact can be achieved.

The socket contacts are verses ^¬ hen so that the holder contacts throughout Toleranzbe ^¬ rich produce with bevels, no hems.

The socket contacts are preferably non-positive and / or positive, for example by means of a latching connection -A- tion, held in the recesses. In particular, the socket contacts can be designed such that they can be inserted into the recesses due to their spring effect, but can no longer be disassembled without tools. The connection cables of the socket contacts are preferably ^¬ guided by appropriately placed openings in the contact carriers.

In terms of manufacturing technology, it is particularly advantageous if the contact carriers are formed integrally with the reflector, for example by injection molding.

In an alternative variant of the headlight, the contact carriers are formed as a separate component and fastened directly or by means of a holding device on the reflector.

The light source is preferably a lamp, in particular a halogen incandescent lamp ^¬ sondere finds use which is fixed by means of ei ^¬ nes bayonet lock on the reflector. The invention can be used, for example, advantageously in single or double helical halogen lamps which are used in motor vehicle headlights.

Brief description of the drawings

The invention will be explained in more detail with reference to a ^{Favor ¬} th embodiment. Show it:

Figure 1 is a three-dimensional partial view of a headlight according to the invention;

Figure 2 is a plan view of the reflector of Figure 1 in the region of the receptacle;

FIG. 3 shows a side view of the reflector from FIG. 1 in the region of the receptacle; Figure 4 is a detailed view of the headlight of Figure 1 in the region of the contact carrier and

5 shows a plan view of the contact carrier of Figure 4.

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 .

Figure 1 shows a front view of a SEN invention ^shown embodied as a vehicle headlamp 1. This headlamp has a reflector 2, the 4 has a receptacle for a provided with contact lugs 6, 8, light source 10 on ^¬. As the light source 10 is a lamp, in particular a halogen incandescent lamp use, is fixed to the reflector 2 by means of a Bajo ^¬ nice closure. The electrical contacting of the lamp 10 takes place by means of egg ^¬ nes contact carrier 12 which has angeord ^¬ designated socket contacts 18 in recesses 14, 16. According to the invention, the contact lugs 6, 8 of the lamp 10 are received in the recesses 14, 16 of the contact carrier 12 with respect to a reflector longitudinal axis 20 with axial play. As a result, the socket contacts 18 can align during the screwing of the lamp 10 into the receptacle 4 of the reflector 2 on the contact lugs 6, 8 of the lamp 10, so that no tension between the lamp 10 and the reflector 2 occur. The contact lugs 6, 8 are pivoted during the screwing of the lamp 10 in the bayonet lock in the Kon ^¬ clock carrier 12. This will be explained in more detail below with reference to Figure 2, which shows a plan view of the Re ^¬ reflector 2 of Figure 1 in the recording 4. According to Figure 2, the bayonet closure in the Vin ^¬ sentlichen of a mounting opening 22, the edge with three by approximately 120 ° offset from one another arranged recesses 24 for receiving three schematically in the locking position, locking tabs 26 illustrated, 28, 30 of the lamp 10 (see Figure 1) is provided. The recesses 24 are bounded by locking portions 32, 34, 36, each having a ramp 38 for the Verriege ^¬ tion tabs 26, 28, 30 have. At least one locking section 32, 34, 36 is provided with a stop 40 for limiting the screwing movement. The mounting opening 22 with the recesses 24 and the locking portions 32, 34, 36 forms together with the locking tabs 26, 28, 30 of the lamp 10 from the bayonet lock. For mounting the lamp 10 in the headlight 1, this is inserted into the mounting opening 22, so that the locking tabs 26, 28, 30 of the lamp 10 engage in the recesses 24 of the reflector 2. By means of a quarter turn around the lamp longitudinal axis, the lamp 10 is fixed in the mounting opening 22 by the locking ^¬ tabs 26, 28, 30 via the ramp 38 on the Verriege ^¬ ment sections 32, 34, 36 slide until the locking ^{tab ¬} 38 in Appendix reaches the stop 40. The An ^¬ impact 40 prevents further rotational movement in Eindreh- direction. The ramps 38 complicate a rotational movement of the lamp 10 in the unlocking direction and prevent an automatic unlocking of the bayonet lock. The arrangement of the locking tabs 26, 28, 30 of the lamp 10 and the locking portions 32, 34, 36 of the reflector 2 with stop 40 ensure that the contact lugs 6, 8 of the lamp 10 are pivoted when screwing the lamp 10 into the contact carrier 12.

According to FIG. 3, which shows a side view of the reflector 2 from FIG. 1 in the region of the receptacle 4, the inputs are shown in FIG. pivot planes of the schematically indicated contact lugs 6, 8 of the lamp 10 (see FIG. 1) are arranged substantially perpendicular to the reflector longitudinal axis 20 and parallel to a reference plane 42 of the reflector 2. The recesses 14, 16 for the socket contacts 18 must be dimensionally accurate to the reference plane 42 of the reflector 2. The dimensions A and B of the arrangement of the contact support 12 are formed entspre ^¬ accordingly the position of the reference plane 42nd In a 2-turn lamp, not shown, a further recess with socket contact 18 is provided.

As shown in Figure 4 can be seen in particular showing a detail of the reflector 2 in the region of the contact carrier 12, 14, 16 and Fas ^¬ sungskontakte 18, the recesses in the direction of the lamp 10 (see Figure 1) back and approximately perpendicular to an opening 44, 46 for insertion of the contact lugs 6, 8 in the contact carrier 12. The socket contacts 18 are non-positively held in the recesses 14, 16 and formed such that they can be inserted due to their spring action in the recesses 14, 16, but can not be disassembled without tools. The connection cables (not shown) of the socket contacts 18 are preferably guided by appropriately placed openings in the contact carrier 12. Manufacturing technology is particularly advantageous if the contact carrier 12 is formed integrally with the reflector 2, for example in injection molding.

In an alternative variant of the headlamp, the contact carriers 12 are formed as a separate component and can be fastened directly or by means of a holding device on the reflector 2.

According to Figure 5, which shows a plan view of the Kontaktträ ^¬ ger 12 of Figure 4, it has proved to be particularly before ^¬ part way, when the socket contacts 18 in the materiality are formed U-shaped. The contact tabs 6, 8 of the lamp 10 (see Figure 1) are received centrally in a contact region 50 having parallel contact portions 52, 54 of the U-shaped socket contacts 18, so that a two-sided electrical contact with verringer ^¬ tem resistance is achieved. The Fassungskontak ^¬ te 18 are provided with bevels 48 so that they do not produce butt edges in the entire range of tolerance. The contacts 18 are formed from a material with correspondingly good spring properties and provided to achieve the required values for the contact resistances with the ent ^¬ speaking surface. For example, the socket contacts 18 are made of spring-hardened stainless steel with a nickel-plated or noble surface, an at least semi-hard, tinned, nickel-plated, gold-plated or silver-plated CuNi alloy, nickel silver alloy, also with a finished surface or hardened steel, tempered, copper-plated or tinned.

In an embodiment of the invention not shown, the U-shaped socket contacts 18 are arranged in the recesses 14, 16 such that the closed ^¬ part of the U-shaped contact 18 at the end face of the contact lug 6, 8 of the lamp 10 is applied. With a derarti ^¬ gen arrangement, for example, a gas-tight Kontak- orientation can be achieved.

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 with light source 10, wherein the electrical contacting of the light source 10 by means of at least one contact ^¬ carrier 12th takes place, which has arranged in recesses 14, 16 socket contacts 18. According to the invention, the contact lugs 6, 8 of the light source 10 with respect to a Lich longitudinal axis 20 with axial clearance in the recesses 14, 16 of the contact carrier 12 was added.

LIST OF REFERENCE NUMBERS

1 headlight

2 reflector 4 receptacle 6 contact lug

8 contact flag

10 light source

12 contact carriers

14 recess 16 recess

18 socket contact

20 reflector longitudinal axis

22 mounting opening

24 recess 26 locking tab

28 locking tab

30 locking tab

32 locking section

34 locking portion 36 locking portion

38 ramp

40 stop

42 reference level

44 opening 46 opening

48 insertion bevel

50 contact area

52 contact section

54 contact section

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 Kontaktträ ^¬ gers (12) in recesses (14, 16) is arrange ^¬ te holder contacts (18), characterized in that the contact lugs (6, 8) of the light source (10) bezüg- lent a reflector longitudinal axis (20) are received with axial clearance in the recesses (14, 16) of the contact carrier (12).

2. Headlight according to claim 1, wherein the contact lugs (6, 8) in the socket contacts (18) of the contact carrier (12) can be pivoted.

3. Headlight according to claim 2, wherein the Einschwenkebenen the contact lugs (6, 8) are arranged substantially perpendicular to the reflector longitudinal axis (20).

4. Headlamp according to claim 2 or 3, wherein the recesses (14, 16) and socket contacts (18) in the direction of the light source (10) and approximately perpendicular to an opening (44, 46) for inserting the contact lugs (6 , 8) in the contact carrier (12).

5. Headlight according to one of the preceding claims, wherein the socket contacts (18) are formed substantially U-shaped.

6. Headlight according to one of the preceding claims, wherein the socket contacts (18) have at least one A ^¬ guiding slant (48).

7. Headlight according to one of the preceding claims, wherein the socket contacts (18) force and / or form ^¬ conclusively, in particular by means of a latching connection, in the recesses (14, 16) are held.

8. Headlight according to one of the preceding claims, wherein the at least one contact carrier (12) is einstü ^¬ ckig formed with the reflector (2).

9. Headlight according to one of claims 1 to 7, wherein the at least one contact carrier (12) formed as a separate component and directly or by means of a holding device on the reflector (2) can be fastened.

10. Headlight according to one of the preceding claims, wherein the light source (10) by means of a Bajonettver ^¬ circuit to the reflector (2) can be fixed.

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