DE10325331B4 - headlights - Google Patents

Abstract

headlights for vehicles, in particular motor vehicles, with a light module comprising a Light source and a reflector, wherein the light module with a first frame (6) connected to a first pivot axis (V) by means of first pivoting means (30-38) pivotable in one second frame (4) is mounted, wherein the second frame (4) by means of second pivoting means (20-28) about a second pivot axis (H) pivotally is mounted in a body-mounted frame support (2), wherein the two pivot axes (H, V) in a plane perpendicular to each other are arranged and at least one of the two frames (6) via default means (52) is adjustable about a control axis, wherein the control axis congruent with one of the pivot axes (V), the basic adjustment means (52) for the horizontal adjustment movement comprises a propeller shaft (56), which is rotatably connected to a threaded rod (58), and wherein a rotational thrust movement of the threaded rod (58) in a horizontal Adjustment movement of the first frame (6) can be implemented, characterized the basic setting means (52) comprise a transmission means, and the...

Description

The The invention relates to a headlamp for vehicles, in particular motor vehicles, with a light module with at least one reflector, a light source and an optional imaging optic, wherein at least a portion of the Light module is connected to a first frame. The first frame is pivotable about a first pivot axis by means of first pivoting means stored in a second frame, wherein the second frame means second pivoting means about a second pivot axis pivotable is stored in a body-mounted frame carrier. The pivot axes are perpendicular to each other and arranged in a plane, and at least one of the frames is over Basic adjustment means adjustable about a control axis. The adjusting axle is congruent with the corresponding pivot axis and the default setting for the horizontal adjustment movement includes a cardan shaft that with a Threaded rod is rotatably connected and wherein a rotary thrust movement the threaded rod in a horizontal adjustment movement of the first Framework is convertible.

headlights for use in vehicles have a light source in conventional design, a reflector and a cover with or without scattering optics on. A disadvantage of headlamps of this type is that the reflectors need a relatively large amount of space, to a satisfactory quality or brightness of the dipped beam to reach. From design and fluidic establish However, it is desirable the for Needed headlights Reduce installation space. This can, for example, by using so-called. PES (poly-ellipsoid system) Headlamps can be achieved. PES headlamps have imaging optics on, the emitted from the light source and the reflector projecting reflected light onto the roadway in front of the vehicle. Thanks to the PES system, the space occupied by the headlamp can be reduced across from usual Headlamps are significantly reduced.

It is known, headlights or parts of headlamps, namely in particular the light module of vehicles relative to the vehicle body movably arrange to the headlight or parts of the headlights to be able to pivot. For example. can the headlight or parts of the headlight around one horizontal pivot axis can be pivoted to the beam range to adjust in the vertical direction. In Europe, everyone must be new to traffic coming vehicles since 01.01.1998 a headlight range control or a hand-operated Have headlamp leveling.

It is also known headlamps or parts of headlamps a second, additional pivot axis to arrange pivotable. For example. the second pivot axis can be vertical be arranged to vary the light exit direction of the headlamp to allow in a horizontal direction. With sufficiently large Pivoting angles of, for example, up to +/- 15 °, it is possible a cornering light function to realize. Thus, the light exit direction of a headlamp be adapted to the course of a traversed curve to an optimal Illumination of the road, especially in curves with one small radius of curvature to reach.

It is known to mount headlights or parts of headlights gimbal in order to allow both a headlamp leveling and a cornering light function simultaneously. In particular, it is known to design the cardanic mounting in such a way that at least part of the headlamp is connected to a first frame, which is mounted pivotably in a second frame, which in turn is mounted pivotably in a body-mounted frame support. It has proven to be advantageous that the pivot axes intersect at a point, wherein the axis intersection should be arranged for dynamic reasons in the vicinity of the center of gravity of the headlight parts to be stored. By pivoting headlamp parts about two intersecting axes, it is achieved that the gap dimensions that occur between the moving parts of the headlamp and the body-mounted parts that adjoin the movable headlamp parts are reduced. Such a headlight is, for example. Off DE 101 29 968 A1 known.

To the Compensation of manufacturing tolerances, it is necessary to the headlight or the headlamp parts following the complete assembly of the vehicle into a basic attitude, in particular that of the legislator given setting requirements to do enough. They are therefore basic settings provided with which the headlamp or parts of the headlamp about an adjusting axis is adjustable. The basic adjustment means used for this purpose For example, consist of screws that via transmission elements, for example. In engagement stand with the headlight or parts of the headlight.

In order to allow the prescribed basic adjustment of the headlamps without providing a relatively large, disturbing gap between vehicle-fixed and movable headlamp parts, it is of the generic type DE 102 10 874 known to provide the pivot axis congruent with the corresponding adjusting axis in a headlight. To the adjustment of To ensure headlamps, it is intended to provide bendable threaded spindles, which, however, have disadvantages in terms of installation and costs.

As a general rule it was known to provide flexible shafts for adjusting the zero position, to compensate for the offset. In addition, the bendable Waves are designed to balance the offset, but not due to outside forces that Light module undesirable Adjust as they give way to a force acting on the light module. When using made of plastic sprayed thin extruded profiles about that addition to connection problems to force application.

It It is therefore an object of the invention to provide a headlamp, in which realizes a cornering light function and a headlight range control being, being an independent Basic adjustment of the headlamp is possible at the lowest possible cost and where the headlight is easy to assemble with reliable function is.

These Task is a headlight of the type described above according to the invention thereby solved, the basic setting means comprise a transmission means and the threaded rod cooperates with a threaded cup, wherein the Threaded shell is an integral part of the transmission means, the is coupled with a pivoting drive of the first frame.

Thereby, that the adjusting axis in covering position with one of the pivot axes is brought by the cardanic suspension of the Headlamps or the headlight parts allowed small gap between obtained movable and vehicle-fixed headlamp parts, without that to enable the basic setting of this gap must be increased. The to the movable parts of the headlamp adjacent fixed vehicle headlamp parts, For example, screens, can directly adjacent to be arranged under the specification of a smallest possible gap. By a performed by the headlight parts spherical motion in the Pivoting process remains the one caused by the distance between moving and vehicle-fixed headlamp parts gap formed constant. This is particularly advantageous if for the realization a cornering light function a relatively large tilt angle of +/- 15 ° required is. Due to the inventive design the adjusting means for the adjustment of the zero position of the inner frame can be the basic setting of the headlight the horizontal layers are play-free and precise. The adjusting force can be tension-free and non-positively in contrast to the known transmit bendable waves become. The propeller shaft can be made substantially rigid be.

To a development of the invention are the first and the second Frame each about Swiveling means pivotable about respective pivot axes, wherein the pivoting means cooperate with pivoting drives.

For example, a first frame is provided on which the moving parts of the Headlamps, so for example. A light source, a reflector and / or an imaging optics are attached. This first frame is around a first, vertical pivot axis by means of first pivoting means horizontally swiveling. This can be a cornering light function be realized. This first frame is in a second, the first frame surrounding frame arranged around a second, horizontal pivot axis by means of second pivoting vertically is pivotable, whereby a headlight range control is enabled. This second frame is mounted in a body-mounted frame carrier.

Around to allow a basic setting of the first frame, basic setting means are provided, wherein this invention arranged in such a way are that the adjusting axis pivots about which the frame for the basic adjustment is congruent with the corresponding vertical pivot axis here is to exercise the framework the cornering light function is pivoted.

To an embodiment The invention provides that between the frame support and / or the second frame and the first frame basic setting means act, which the relative position of the first pivoting means to the first frame to adjust. The basic adjustment means are thus arranged such that a pivoting of the first and second frames not, as in usual Systems known by direct action of the basic adjustment means takes place on the frame, but with the interposition of the pivoting means. The default setting means so the position and orientation of the pivoting means, which thereby a certain relative position compared to the take first frame.

Advantageously, the pivoting means each have a Verstellmittelantrieb and a lifting means, which is connected for the headlight range control, so the horizontal pivoting about a hinge with the first frame. In this case, the Verschwenkmittelantrieb example. Pneumatically, hydraulically or electrically actuated and the lifting means may be formed as a piston. Such pivoting means and lifting means have proven to be reliable and are of a variety of industrial Use cases known.

To an embodiment The invention provides that the basic adjustment means is a transmission member which has a frame carrier fixed Axis is pivotable. This first transmission link can be a the swiveling drives for carry the pivoting of the first frame, wherein by pivoting of the transmission link pivoted about a frame-fixed axis of this pivoting means drive is to the relative position between the pivoting means and to set the first frame. For example. the transmission member carries the Verstellmittelantrieb that adjusting means, by means of which a frame for cornering function is horizontally pivotable about a vertical pivot axis.

According to the invention the transmission medium a threaded cup, in which the thread of the threaded rod is guided and wherein the threaded cup is an integral part of the transmission means is.

When first transmission means can be provided, for example, a pivot plate, the is pivotable about the vertical pivot axis and on the Drive motor of the pivot drive of the cornering light function arranged is. In particular, it can be provided that this transmission means is arranged within the second frame and with this and the first frame in a headlight range adjustment, so one vertical pivoting pivoted about the horizontal pivot axis becomes.

The Threaded rod can, for example, over a Clasp or spring clip, in particular made of metal and a other positive fastening means on the transmission medium be held so that the thread of the threaded rod with the threaded cup always engaged. The threaded rod itself can with their two Ends should be stored in the second frame, being at one end of the threaded rod can attack the PTO shaft, which designed as a gimbal shaft can be and, to some extent, a pivoting of the transmission medium allows. The other side of the PTO shaft can with a bevel gear of a transmission, at the two bevel gears unroll to form an angle gear, interact. A drive axle of the transmission can, for example, with a bearing shell on the frame girder be set. The axis of the PTO shaft is not necessarily aligned with the axis of the threaded rod and not with an output shaft of the Angular gear. About that also lie the axis of the threaded rod and the output shaft of the gearbox not necessarily in a line.

A allows such storage a backlash-free motion transmission in a plane. This motion transfer is required to bring the inner frame to its basic setting bring to. Due to the special design of the basic adjustment is achieved that the point of attack for the adjustment of the zero position nearly can be arranged arbitrarily. In addition, the tense Adjustment mechanism not in an adjustment, causing damage can be or unwanted accruals due to external forces and fatigue may occur.

Further advantageous embodiments and details of the invention are in the following description, in which the invention with reference to an embodiment shown in the drawing described in more detail and explained is.

It demonstrate:

1 a perspective view of a portion of a headlight according to the invention;

2 a perspective view of a section 1 according to the in 1 illustrated viewing direction B.

1 shows a perspective view of a headlight according to the invention. It is an outer frame girder 2 provided, the body is fixed and serves to accommodate all parts described below. In the frame carrier 2 is an outer frame 4 (second frame) stored, in which in turn an inner frame 6 (first frame) is stored. The outer frame 4 is about bearing pins 8th and 10 with the frame carrier 2 connected so that the outer frame 4 about a horizontal pivot axis H is pivotable.

The outer frame 4 has tenon guides 12 and 14 on that for the engagement of tenons 16 . 18 are suitable, which are integral with the inner frame 2 are formed. Through the cones 16 . 18 and the pin guides 12 . 14 pivot bearings are formed by which the inner frame 6 about a vertical axis V with respect to the outer frame 4 is pivotable. The inner frame 6 is for fixed recording of parts of the headlight, not shown, such as light source and reflector and / or imaging optics (so-called light module) suitable. These parts are made by moving the inner frame 6 moved.

It is also a headlight range adjustment drive 20 provided, the drive of a reciprocating piston 22 serves. The reciprocating piston 22 ends in a ball head, not shown, in a warehouse bowl in a receptacle 24 is guided. At the reception 24 is a lever 28 attached to the outer frame 4 and the recording 24 connected is. About the headlight range adjustment drive 20 , the reciprocating piston 22 , the recording 24 and the lever 28 can the outer frame 4 about the horizontal pivot axis H relative to the frame carrier 2 be pivoted. By such pivoting a headlamp leveling is realized.

In the 1 The arrangement shown further comprises a cornering light Verstellmittelantrieb 30 on, to drive a reciprocating piston 32 serves. The reciprocating piston 32 is about a ball joint 34 with a transmission rod 36 connected. The transmission rod 36 is about a hinge 38 with the inner frame 6 connected. About the bend light adjustment means drive 30 , the reciprocating piston 32 , the ball joint 34 , and the transmission rod 36 can over the hinge 38 a pivoting of the inner frame 6 about the vertical pivot axis V relative to the outer frame 4 respectively. By such a pivoting a cornering light function can be realized.

With the parts shown so far is an adjustment of the inner frame 6 possible in horizontal and vertical direction. The adjustment in the horizontal direction is effected by pivoting about the vertical pivot axis V of the inner frame 6 in the outer frame 4 ; the pivoting in the vertical direction is done by pivoting the outer frame 4 around the horizontal pivot axis H. Thus, the on the inner frame 6 fixed light-generating elements of the headlamp (light module) are brought into a position, as required for the realization of both functions "cornering" or "headlight range control".

The cornering light adjusting means drive 30 is doing on a trained as a transmission medium swivel plate 52 arranged and can be pivoted in the horizontal direction with this about an adjusting axis, which coincides with the pivot axis V. The swivel plate 52 has a bearing ring 54 on top of the pin guide 14 of the outer frame 4 is pivotally mounted. At a setting of the lighting range is the swivel plate 52 together with the inner frame 6 and the outer frame 4 pivoted about the horizontal axis H.

2 shows sections of the arrangement according to 1 in an in 1 B direction of view. It is only a section of the outer frame 4 as well as the swivel plate 52 shown.

The second adjusting means drive 30 and thus about the elements 32 - 38 also the inner frame 6 can be brought into a basic setting by the swivel plate 52 on which they are arranged to the pin guide 14 is pivoted. This is an angle gear 40 provided that can be driven by a drive, not shown. The angle gear has a drive shaft 42 that with a first bevel gear 44 connected is. With the bevel gear 44 combs a second bevel gear 46 , whereby the deflection takes place by approx. 90 °. The angular gear 40 is in the range of the drive shaft 42 over a bearing shell 48 on the outer frame girder 2 stored and fixed there fixed to the housing. The second bevel gear 46 is with an output shaft in the form of a square pin 50 connected.

A propeller shaft 56 has at its one end a receptacle for the pin 50 on, so that a rotationally positive connection between PTO shaft 56 and angular gear 40 is produced. The other end of the PTO shaft 56 also has a receptacle for a square pin of a threaded rod 58 on, in two bearings, by ribs 60 of the outer frame 4 are formed, held.

The threaded rod 58 is in a bearing cup 62 having a corresponding mating thread on the underside of the pivot plate 52 rotatably mounted. The rotation of the PTO shaft 56 is doing through the threaded rod 58 converted into a horizontal, translational movement (rotational thrust movement). The definition of the threaded rod 58 on the swivel plate 52 via a metal clip 64 that spring against the threaded rod 58 pushes over a positive connection. The metal bracket 64 can be behind projections of the swivel plate 52 be clipped.

By the rotary push movement of the threaded rod 58 performs the swivel plate 52 a rotation about the pivot axis V. By the pivot plate 52 is pivoted about the vertical pivot axis V, the cornering light Verstellmittelantrieb 30 and thus about the elements 32 - 38 also the inner frame 6 brought into a basic setting, that is in a zero position. This is the frame 6 pivoted about the same vertical pivot axis V to which the frame 6 also when operating the cornering light Verstellmittelantriebs 30 is pivoted.

Claims (11)

Headlight for vehicles, in particular motor vehicles, having a light module comprising a light source and a reflector, the light module having a first frame ( 6 ) connected to a first pivot axis (V) by means of first pivoting means ( 30 - 38 ) pivotable in one second frame ( 4 ), the second frame ( 4 ) by means of second pivoting means ( 20 - 28 ) about a second pivot axis (H) pivotable in a body-mounted frame support ( 2 ) is mounted, wherein the two pivot axes (H, V) are arranged in a plane perpendicular to each other and at least one of the two frames ( 6 ) via default means ( 52 ) is adjustable about a control axis, wherein the control axis is congruent with one of the pivot axes (V), wherein the basic adjustment means ( 52 ) for the horizontal adjustment movement a propeller shaft ( 56 ) fitted with a threaded rod ( 58 ) is rotatably connected, and wherein a rotational thrust movement of the threaded rod ( 58 ) in a horizontal adjustment movement of the first frame ( 6 ), characterized in that the basic setting means ( 52 ) comprise a transmission means, and the threaded rod ( 58 ) with a threaded cup ( 62 ) cooperates, wherein the threaded cup ( 62 ) integral part of the transmission means ( 52 ), which is connected to a pivoting drive of the first frame ( 6 ) is coupled. Headlight according to claim 1, characterized in that the transmission means pivotable about the adjusting axis pivot plate ( 52 ). A putter according to claim 1 or 2, characterized in that on the transmission means ( 52 ) the pivoting drive of the first frame ( 6 ). Headlamp according to one of the preceding claims, characterized in that the one side of the propeller shaft ( 56 ) with the threaded rod ( 58 ) and the other side of the PTO shaft ( 56 ) with a bevel gear ( 40 ) connected is. Headlight according to one of the preceding claims, characterized in that the pivoting means drive ( 20 . 30 ) takes place pneumatically or electrically, in particular via stepper motors. Headlamp according to one of the preceding claims, characterized in that the threaded rod ( 58 ) via a spring clip ( 64 ) at the transmission means ( 52 ). Headlamp according to one of the preceding claims 5 and 6, characterized in that the bevel gear ( 40 ) is an angular gear. Headlight according to one of the preceding claims, characterized in that a drive ( 42 ) of the bevel gear ( 40 ) on the frame girder ( 2 ) is stored. Headlamp according to one of the preceding claims, characterized in that the rotational connections of propeller shaft ( 56 ) with the threaded rod ( 58 ) and / or the bevel gear ( 40 ) via a polygonal section, which cooperates with a corresponding recess in the respective other component. Headlight according to one of the preceding claims, characterized in that the propeller shaft ( 56 ) is a propeller shaft. Headlight according to one of the preceding claims, characterized in that the basic adjustment means indirectly, in particular via the pivoting means ( 30 - 38 ) on the first frame ( 6 ) acts.