WO2013139896A1

WO2013139896A1 - Headlamp for vehicles

Info

Publication number: WO2013139896A1
Application number: PCT/EP2013/055908
Authority: WO
Inventors: Waldemar PETKER
Original assignee: Hella Kgaa Hueck & Co.
Priority date: 2012-03-22
Filing date: 2013-03-21
Publication date: 2013-09-26
Also published as: DE102012102435A1

Abstract

The invention relates to a headlamp for vehicles comprising a light source, a reflector assigned to the light source, a lens mounted in front of the reflector and a wall arranged between the reflector and the lens in order to generate a determined light distribution, a diaphragm edge of the diaphragm representing a light/dark boundary of the light distribution, further comprising a lens holder for receiving the lens and a deflection surface arranged between the lens and the reflector by means of which a partial light beam reflected on a upper half of the reflector can be deflected in order to illuminate a traffic sign arranged at a height, the deflection surface being secured in a lower half of the lens holder on same.

Description

Headlights for vehicles

description

The invention relates to a headlamp for vehicles with a light source, with a reflector associated with the light source, with a lens arranged upstream of the reflector and with an arranged between the reflector and the lens aperture for generating a predetermined light distribution, wherein a blend edge of the aperture a chiaroscuro Limits the light distribution, with a lens holder for holding the lens and with a arranged between the lens and the reflector deflection, by means of which a reflected at an upper half of the reflector partial light beam is deflected to illuminate a high traffic sign.

From DE 10 2006 033 920 A1 a headlight for vehicles is known, which operates on the projection principle. For this purpose, the headlight on a light source, a reflector, an upstream lens and arranged in the focal region of the lens aperture, which is arranged between the lens and the reflector. The diaphragm has a glare edge, by means of which a light-dark boundary of a given light distribution can be imaged. The lens is held in a lens holder, so that high-mounted traffic signs (overhead signs) are illuminated. The diaphragm has, in a region close to the optical axis, a deflecting surface on which a partial light bundle reflected in an upper region of the reflector can be further reflected in the direction of the highly arranged traffic signs. A disadvantage of the known headlamp is that the deflection must consist of several surface sections of different curvature, which must be arranged stationarily in space. As a result, the production cost is relatively high.

Object of the present invention is therefore to develop a constructed according to the projection principle headlights for vehicles such that in a simple way, in addition to a predetermined light distribution, the illumination of highly arranged traffic signs is guaranteed. To achieve this object, the invention in conjunction with the preamble of claim 1, characterized in that the deflection surface is fixed in a lower half of the lens holder to the same.

According to the invention, a deflection surface for deflecting a partial light bundle coming from an upper region of the reflector in the direction of highly arranged traffic signs is arranged in a lower region of a lens holder, preferably in the region of a ring of the lens holder. Advantageously, this can be achieved a simple attachment and low-tolerance connection of the deflection. The partial light beam striking the deflection surface is preferably forwarded in an off-axis region of the lens. The partial light bundle is refracted in a near-edge outer region of the lens in the direction of the high-mounted traffic signs. The deflection surface is arranged at an angle to the optical axis such that the partial light bundle refracted in the outer region of the lens can be used specifically for illuminating the high-ranking traffic signs. The invention thus enables a relatively simple construction of the headlamp, which can be manufactured process reliable.

According to a preferred embodiment of the invention, the deflection surface is formed as an oblique upper side of a projection block, which is attached to the lens holder from a rear side in the light emission direction at the same. Due to the relatively small distance of the deflection surface to the lens holder, this can be done a relatively simple attachment.

According to a development of the invention, the approach block is insoluble, preferably connected by rivets with the lens holder. Advantageously, thereby a low-tolerance attachment of the deflection can be realized.

According to a development of the invention, the approach block on the bottom side a projection which presses in the assembled state on an inner surface of the lens holder. Advantageously, a defined normal force is thereby exerted on the inner surface of the lens holder, which effects a tight fit of the deflection surface. In particular, the support of the attachment block in the lens shark caused by the protrusion can ter tolerance compensation of provided with the deflection approach block are created.

According to a development of the invention, the lens holder and the approach block each have a fastening web, which are each provided with an opening such that the approach block is connected by rivets to the lens holder. Advantageously, the riveting can be used to build on the projection of the approach block a defined contact force in the normal direction to the lens holder.

According to a development of the invention, the deflection surface is flat. As a result, it has a relatively simple design.

According to a preferred variant of the invention, the attachment block is releasably connected to the lens holder by latching. Advantageously, this assembly can be simplified.

According to a preferred embodiment of the invention, the approach block is attached by means of a locking clip on the lens holder. By integrated on the approach block locking clip of the approach block can be mounted low-strain on the lens holder. The attachment can be done manually or by means of an automated tool.

According to a preferred embodiment of the invention, the approach block on a carrying the deflecting support body, which is connected by latching with the locking clip. Advantageously, the support body and the locking clip can be made preferably from a sheet metal blank separated by forming. After connecting the support body with the locking clip, a structural unit is formed, which can be easily and safely mounted on the lens holder by moving in a predetermined mounting direction.

According to a development of the invention, the locking clip has a central portion connected to the support body, on whose opposite sides in each case Protrude locking arms, which engage behind a holding surface of the lens holder in a mounting position.

According to a development of the invention, the central portion of the locking clip on opposite sides clamping webs which cooperate with peripheral edges of the support body such that the locking clip is securely held on the support body. Advantageously, this undesirable springback of the locking clip is prevented when attaching to the support body. In addition, this undesirable hooking of the items is prevented during bulk transport.

According to a development of the invention, the locking clip is connected to a rear side in the mounting direction of the support body with the same, so that a mounting force is introduced via the locking clip in a direction perpendicular to the mounting direction wall of the support body. This advantageously prevents deformation of the wall of the support body during assembly on the lens holder. The resulting assembly forces are directed via the locking clip on the back of the wall of the support body.

According to a development of the invention, the lens holder has at least axially projecting positioning domes, which engage in corresponding holes of the support body and the latching clip. Advantageously, this makes it possible to realize an exact positioning of the attachment block to the lens holder. Here, the positioning is remote from the attachment points, which are defined by the ends of the locking arms.

Embodiments of the invention are explained below with reference to the drawings.

Show it:

1 is a rear perspective view of a lens holder with a rear mounted deflection for deflecting the light in the direction of highly arranged road signs, FIG. 2 shows a schematic partial vertical section through the lens holder provided with a lens in a lower region thereof; FIG.

Fig. 3 is a schematic side view of a headlamp with marked

Light rays, which are reflected by a reflector and the deflecting surface of the headlamp

Fig. 4 is a rear perspective view of a neck block after a second

embodiment,

5 is a bottom view of the approach block according to Figure 4,

6 shows a horizontal section through the attachment block according to FIGS. 4 and 5 in a mounting position thereof on a lens holder,

Fig. 7 is a rear perspective view of the approach block, before being mounted in the mounting direction on the lens holder and

8 shows a perspective rear view of the attachment block in the assembly position on the lens holder.

A headlight for vehicles has a pot-shaped housing, not shown, in which a projection module 1 is arranged. A front opening edge of the housing is covered by a translucent lens.

The projection module 1 is used to generate a low beam and / or high beam distribution. The projection module 1 essentially comprises a light source 2, a reflector 3 assigned to the light source 2, a lens 4 arranged upstream of the reflector 3, and a diaphragm 5 arranged between the same and the reflector 3 for a focal point region of the lens 4. The diaphragm 5 has a glare edge, by means of which a light-dark boundary of the low-beam light distribution can be imaged. The lens 4 has a spherical front side 7 arranged in the light emission direction 6 at the front and a flat back 8. The lens 4 is fixed by means of a snap ring, not shown, to a lens holder 9, wherein a near the rear 8 of the lens 4 near edge thereof is disposed on an annular stop 10 in a front region of the lens holder 9. This ring-shaped stop 10 or the lens receptacle is located in a light emission direction 6 front portion of a ring 11 of the lens holder 9. The ring 11 has an axial length I, which lies in the region of the maximum axial length I of the lens 4.

From a rear edge 12 of the ring 11 protrude in the circumferential direction distributed from a plurality of mounting arms 13, by means of which the lens holder 9 is fixed to the reflector 3 or on a reflector support. The reflector carrier 3 carrying the reflector support is fixed, for example, fixed or pivotally mounted on the housing of the headlamp.

In order additionally to illuminate a highly arranged traffic sign in the traffic area, in a lower region or a lower half of the lens holder 9, a projection block 14 is fastened with an oblique deflection surface 15, wherein the deflection surface 15 forms a reflective upper side of the projection block 14. Preferably, the deflection surface 15 and the approach block 14 are made of a light-reflecting steel material. According to an alternative embodiment, not shown, the oblique deflection surface 15 may also be formed by a Verspiegelungsüberzug the approach block 14.

The deflection surface 15 is arranged at an angle α to an optical axis A of the lens 4 such that a partial light bundle L reflected at an upper side of the reflector 3 is reflected at the deflection surface 15 in the direction of the lens 4 such that the partial light bundle L after refraction on the lens 4 is used to illuminate the raised road sign. The deflection surface 15 forms an upper side of the attachment block 14 which extends in a region between the rear side 8 of the lens 4 and a rear edge plane R _{H of} the lens holder ring 11.

The deflection surface 15 extends in the light emission direction 6 preferably just below the opening angle α to the outside while shortening the distance to an interior surface 23 of the lens holder 9, wherein a front end 16 of the deflection surface 15 is arranged at a distance a from the inner surface 23. Preferably, the deflection surface 15 consists of two planar partial surfaces 15 ', 15 ", which extend on both sides of a vertical plane of the lens holder 9 extending in the plane of the Figure 3. Preferably, the partial surfaces 15', 15" are slightly inclined with respect to the vertical center plane , wherein the partial surfaces 15 ', 15 "in each case run slightly sloping from the vertical center plane, Alternatively, the partial surfaces 15', 15" can also run slightly rising with respect to the vertical center plane. Preferably, the partial surfaces 15 ', 15 "extend symmetrically to the vertical center plane of the light holder.

The extension block 14 is formed symmetrically to a median plane or symmetrically attached to the vertical center plane of the lens holder 9 to the same insoluble. The approach block 14 has for this purpose on both sides of the vertical center plane a fastening web 17 with a perforation 18, wherein the fastening web 17 of the approach block 14 is arranged in alignment with an integrally formed on the rear edge 12 of the lens holder 9 and a perforation 21 having fastening web 20 so that, for example, a rivet 19 can be inserted into the perforations 18, 21 for producing a riveted connection between the lens holder 9 and the projection block 14. Alternatively, the rivet 19 could also be fixed in advance to the projection block 14.

For mounting the shoulder block 14 on the lens holder 9, the approach block 14 is attached to the same from a rear side of the lens holder 9, the holes 18 of the mounting webs 17 of the approach block 14 are aligned with the holes 21 of the mounting webs 20 of the lens holder 9. The final positioning of the deflection surface 15 takes place by folding over the pull-through rivets 19, wherein a projection 22 of the attachment block 14 arranged opposite the deflection surface 15 is pressed by means of a force F onto an inner surface 23 of the lens holder 9. The projection 22 may be formed in the circumferential direction of the lens holder 9 in a straight line or arcuate shape. Alternatively, a plurality of projections 22 spaced apart from each other transversely to the center plane of the approach block 14 or in circumferential direction. direction of the lens holder 9 may be arranged on a lower side 20 of the projection block 14 and preferably in a front region thereof.

According to an alternative embodiment, not shown, the approach block 14 may also be connected by screwing or gluing or by welding to the lens holder 9.

Preferably, the lug block 14 is formed as a flexure consisting of a metal material, preferably a bent steel material. According to an alternative embodiment, not shown, the approach block 14 may be formed as a solid body or as a hollow body.

According to an alternative embodiment, not shown, the lens holder 9 instead of a circular ring 11 also have a polygonal ring.

According to a further embodiment of the invention according to the figures 4 to 8, a lug block 114 is provided, which differs from the lug block 4 according to the first embodiment essentially in that the lug block 114 in a lower edge portion 111 has a locking clip 110, by means of which he is releasably secured to a lens holder 109 by latching.

The attachment block 114 has a carrier body 115, to which the deflection surface 15 adjoins in an upper edge region 112 of the attachment block 114. The deflection surface 15 of the attachment block 114 essentially corresponds to the deflection surface 15 of the attachment block 14.

The same components or component functions of the embodiments are therefore provided with the same reference numerals.

The support body 115 and the latching clip 110 are each made from a blank, preferably from a sheet metal blank, by forming. The support body 115 has in the lower edge region 111 a parallel to a lower peripheral edge 113 of the same extending slot 116 into which a clamping web 117 of the latching Clamp 110 clamped or latching engages. An opposing second clamping web 117 'of the locking clip 110 is firmly connected to the lower peripheral edge 113 of the support body 115, so that the locking clip 110 is securely held on the support body 115. The one clamping web 117 engages on a lower peripheral edge 116 'of the slot 116. As a result, a running in the plane of a rear wall 118 of the support body 115 clamping force is generated, which allows a tight fit of the locking clip 110 on the support body 115. The support body 115 and the preferably integrally connected with the same locking clip 110 are made of a sheet material.

The support body 115 has the rear wall 118 and on both sides on the same subsequent side walls 119, 119 ', wherein at the upper edges of the rear wall 118 and the side walls 119, 119', the deflection surface 15 connects. The deflection surface 15 is preferably integrally connected to the rear wall 118 and is brought by forming at an acute angle to the rear wall 118.

The locking clip 110 has a central portion 120, protrude from the respective latching arms 121 on opposite sides. The clamping webs 117, 117 'protrude from the other two sides of the rectangular or plate-shaped central portion 120.

The latching arms 121 each have latching legs 122, 122 'which extend toward one another at an acute angle, wherein a free end-side latching leg 122' has a barb-shaped end 123 which presses on a holding surface 124 of the lens holder 109 in a mounting position of the projection block 114. The locking leg 122 'has a length such that the barb-shaped end 123, the holding surface 124 surrounds, which extends adjacent to a slot 125 of the lens holder 109. The slot 125 allows the free locking leg 122 'can engage in this and the support surface 124 engages behind.

The latching arms 121 are identical, so that the latching clips 110 has an M-shaped contour in side view. The M-shaped locking clip 110 allows a tension-free attachment of the support body 115 and the approach block 114 on the lens holder 109th

For mounting, the projection block 114 with the latching clip 110 in the mounting direction M in the axial direction is fed to the lens holder 109 from the rear side thereof. The frame-shaped lens holder 109 (support frame) has axially rearwardly projecting positioning domes 126, which pass through corresponding holes 127 of the support body 115 and the latching clip 110 and allow a defined positioning of the attachment block 114 on the lens holder 109. If a front wall of the middle section 120 bears on a contact surface 128 of the lens holder 109, mounting forces F are exerted on the vertex region of the latching limbs 122, 122 'for attachment of the projection block 114 to the lens holder 109, so that the barb-shaped end 123 forms the holding surface 124 of the lens holder 109 engages behind. This latching takes place without the wall 118 of the carrier body 115 being able to deform. The resulting assembly forces are in this case the back first directed to the wall of the central portion 120 and only then on the wall of the support body 115.

The lens holder 109 is preferably made of a plastic material. The approach block 14, 114 is preferably made of a sheet material.

The locking clip 110 is connected in a locking direction in the mounting direction M rear side of the support body 115 with the same on the clamping webs 117, 117 '.

LIST OF REFERENCE NUMBERS

1 projection module

2 light sources

3 reflector

4 lens

5 aperture

6 light emission direction

7 front side

8 back side

9 lens holders

10 annular stop

11 ring

12 back edge

13 mounting arm

14 neck block

15, 15 ', 15 "deflection surface / partial surface

16 end

17 fastening bridge

18 holes

19 rivet

20 fastening bridge

21 perforation

22 lead

23 inside surface

24 bottom

I axial length

α angle

A optical axis

L partial light bundle a distance

RH border plane

F force 109 lens holder

110 locking clip

111 lower edge area

112 upper edge area

113 lower edge

114 attachment block

115 supporting body

116, 116 'slot / peripheral edge

117, 117 'clamping web

118 back wall

119, 119 'lateral wall

120 middle section

121 locking arms

122, 122 'locking legs

123 barb-shaped end

124 holding surfaces

125 slot

126 position domes

127 holes

128 contact surface

M mounting direction

F mounting force

Claims

claims

1. A headlamp for vehicles with a light source, with a reflector associated with the light source, with a reflector disposed the lens and with an arranged between the reflector and the lens aperture for generating a predetermined light distribution, wherein a blend edge of the aperture a light-dark boundary the light distribution maps, with a lens holder for holding the lens and with a deflecting surface arranged between the lens and the reflector, by means of which a reflected at an upper half of the reflector partial light beam is deflected for illumination of a highly arranged road sign, characterized in that the deflection (15) in a lower half of the lens holder (9) is attached to the same.

2. Headlight according to claim 1, characterized in that the deflection surface (15) forms an oblique upper side of a shoulder block (14) which is fixed to the lens holder (9) from a light in the direction of radiation (6) rear side thereof.

3. Headlight according to claim 1 or 2, characterized in that the

Boss block (14) is permanently connected to the lens holder (9).

4. Headlight according to one of claims 1 to 3, characterized in that the approach block (14) has a projection on the bottom side (22) which presses in the assembled state on an inner surface (23) of the lens holder (9).

5. Headlight according to one of claims 1 to 4, characterized in that the lens holder (9) on a reflector (3) facing edge side has a fastening web (20) with a corresponding fastening web (17) of the approach block (14) Rivets is connected.

6. Headlight according to one of claims 1 to 5, characterized in that on both sides of a vertical median plane of the lens holder (9) at least one fastening web (17, 20) of the approach block (14) and the lens holder (9) are arranged.

7. Headlight according to one of claims 1 to 6, characterized in that the deflection surface (15) in a region between a rear side (8) of the lens (4) and a rear edge plane (R _H ) of the lens holder (9) is arranged.

8. Headlight according to one of claims 1 to 7, characterized in that the deflection surface (15) at an angle (a) outwardly to the lens holder (9) from the rear side (12) thereof in the direction of the lens (4).

9. Headlight according to one of claims 1 to 8, characterized in that the deflection surface (15) by a reflective upper side of the approach block (14) is formed.

10. Headlight according to one of claims 1 to 9, characterized in that the deflection surface (15) extends at least partially flat.

11. Headlight according to claim 1 or 2, characterized in that the

Lug block (114) is connected by latching with the lens holder (109).

12. Headlight according to claim 11, characterized in that the approach block (114) has a support body (115), at its upper edge region (112) the deflection surface (15) and at its lower edge region (111) has a latching clip (110) for latching of the projection block (114) are arranged on the lens holder (109).

13. Headlight according to claim 11 or 12, characterized in that the

Supporting body (115) and the locking clip (110) by forming an accessory Section can be produced and that the supporting body (115) is connected by latching with the locking clip (110).

14. Headlight according to one of claims 11 to 13, characterized in that the latching clip (110) by latching to the support body (115) connected to the central portion (120), on whose opposite sides in each case a latching arm (120) protrudes, in a mounting position of the projection block (114) engages behind a holding surface (124) of the lens holder (109).

15. Headlight according to one of claims 11 to 14, characterized in that the latching arms (121) in each case at an acute angle converging latching legs (122, 122 '), wherein an end-side locking leg (122') has a barb-shaped end (123) which presses on the holding surface (124) of the lens holder (109).

16. Headlight according to one of claims 11 to 15, characterized in that the central portion (120) of the latching clip (110) laterally projecting clamping webs (117, 117 '), which in such a distance from each other arranged marginal edges (113, 116') of the supporting body (115) engage behind to secure the locking clip (110) on the supporting body (115).

17. Headlight according to one of claims 11 to 16, characterized in that the latching clip (110) on a in mounting direction (M) rear side of the supporting body (115) is connected to the same.

18. Headlight according to one of claims 11 to 17, characterized in that the latching clip (110) is M-shaped.

19. Headlight according to one of claims 11 to 18, characterized in that the lens holder (109) has at least two axially projecting positioning domes (126) in the mounting position in corresponding holes (127) of the supporting body (115) and the locking clip (110 ). Headlamp according to one of claims 1 to 19, characterized in that the lens holder (109) consists of a plastic material.