EP1201989A2 - Vehicle headlamp - Google Patents

Abstract

The vehicle headlamp has a light source and reflector, a lens and a two-shade arrangement. A pivoting element has a rotation axis essentially parallel to the shade axles and is arranged between the shade axles in the horizontal direction. The pivot element is coupled to the shade axles. Pivoting the pivot element moves one shade axle from a raised/lowered position to a lowered/raised position and the other shade axle in the opposite direction. The vehicle headlamp has a light source (30) and reflector (1), a lens and a shade arrangement with two optically closely spaced vertically adjustable shades (3,4). A rotatably mounted pivoting element (20) has a rotation axis (21) essentially parallel to the shade axles (6) and is arranged between the shade axles in the horizontal direction. The pivot element is coupled to the shade axles. Pivoting the pivot element moves one shade axle from a raised/lowered position to a lowered/raised position and the other shade axle in the opposite direction.

Description

The invention relates to a vehicle headlight with a light source, one of the Light source emitting light reflecting reflector, one in the beam path in front of the Reflector arranged lens and a located between the reflector and the lens Diaphragm arrangement, which consists of at least two optically close to each other lying, height-adjustable between at least two defined positions Diaphragms exist, the diaphragms around on both sides outside a vertical longitudinal median plane of the reflector lying aperture axes are rotatable, and a first aperture one upper diaphragm edge course for generating a first light distribution pattern, as well as a second diaphragm an upper diaphragm edge course for generating a second light distribution pattern has, and in a defined, raised position of the first aperture whose upper diaphragm edge with optically effective areas above the diaphragm edge second aperture and in a raised, defined position of the second aperture upper diaphragm edge with essential areas above the diaphragm edge of the first Aperture lies.

In an unpublished patent application A 502/2000 by the applicant is a headlight with two height-adjustable screens to create different ones Light distribution pattern, in particular a low beam distribution pattern for left or right. Right-hand traffic described. In an advantageous embodiment of the headlight the panels are coupled with an adjustment element so that when this is actuated Adjustment element which a panel from a raised to a lowered position and the other aperture is moved from its lowered to the raised position. To this Way can easily switch between a low beam for left and right-hand traffic become.

It is desirable to have an aperture arrangement that is suitable for both right and Left-hand traffic allows the generation of a corresponding low beam, for example to produce a high beam distribution. However, in the above registration no indications for a corresponding constructive solution are given.

It is an object of the invention in a structurally simple and inexpensive manner Way to create a headlamp that allows both different low beam distributions, for left and right-hand traffic, as well as high beam distribution can.

This object is achieved with a vehicle headlight mentioned at the outset in that that according to the invention a pivot element is provided which is rotatable about an axis of rotation is, the axis of rotation is substantially parallel to the aperture axes and in is arranged in the horizontal direction between the aperture axes, the pivot element the aperture axes is coupled, and the one when pivoting the pivoting element Aperture axis from a raised / lowered to a lowered / raised position and the other aperture axis from a lowered / raised to a raised / lowered Position is movable.

According to the invention, the aperture axes for the adjustable can with a swivel element Apertures between different defined positions, especially one raised and a lowered position. The one in the raised Position aperture is the optically effective and creates a light distribution according to the top edge of the panel, whereas the other panel with the lowered one Aperture is optically ineffective. The diaphragms are now still around their diaphragm axes pivotable so that in each case at least the optically effective aperture from its raised is pivotable into a lowered position, and thus a high beam distribution can be generated.

It is expedient if the swivel element is rotatably mounted on a carrier element. A pre-assembly can be carried out on this, so that a final assembly of the headlamp only the support element is connected to the reflector accordingly must become.

In one embodiment of the invention, in which the aperture axes are separate from the Swivel element are formed, it is necessary that the swivel element to the aperture axes has adapted recesses, by means of which the aperture axes in a Pivoting of the swivel element are carried.

But it can also be advantageous if the aperture axes are firmly connected to the swivel plate are.

Since the swivel element is only a short distance from the carrier element, it is cheap in both cases, if the support element exemptions for the aperture axes has, so that a problem-free movement of the carrier element not impeded Dazzle is possible. It can also be useful if the exemptions are designed in this way or are adapted to the aperture axis diameter that they serve as guides for the Aperture axes serve to stabilize the movement and position of the apertures can.

In a favorable embodiment of the invention, the aperture axes and the Pivot axis essentially parallel to the optical axis of the headlamp.

It is also expedient if the axis of rotation is approximately in the center, in the area of the vertical axis optical axis containing the longitudinal center plane through the pivot element. On this way, the two can be moved as required by a slight pivoting movement Aperture axes can be moved up or down.

The swivel element usually has an essentially flat configuration, and the swivel element is seen in the light exit direction after the support element and arranged in front of the panel arrangement.

To enable the construction of a headlamp with small dimensions, is / are the carrier element and / or the pivoting element at a short distance from the Aperture arrangement arranged.

The invention can be implemented particularly advantageously if the diaphragms by means of a Adjustment device essentially simultaneously from a raised (lowered) Position can be pivoted into a lowered (raised) position. In this way can simply between a position of the optically effective aperture for a low beam distribution and a high beam distribution can be switched.

In an advantageous embodiment, the adjusting device has a movable one Output member, which is movably connected to a rotatably mounted lever, wherein the lever is movably connected to the panels via connecting means. at actuation of the setting device, for example a lifting magnet, the output member, for example an anchor, pulled into the setting device. This movement will via a lever movably connected to the armature, for example in a downward direction directional movement of connecting means that are movably connected to the bezels are implemented, whereby the panels from an optically effective position down, in an optically ineffective position can be moved. The movement takes place against one Restoring force of a spring, for example. Furthermore, it should be noted that of course only one aperture is in an optically effective position, anyway but both stops are moved down.

The connecting means are, for example, wire-shaped, but they can also be rod-shaped.

The connecting means with the screens are expediently each in an outer, connected to the area opposite the aperture axis by one movement with relatively little effort on the part of the adjusting device.

The setting device and / or the lever are expediently located outside of Reflector, lens and aperture arrangement formed optical system arranged because of available space inside this optical system is usually too small to accommodate of these components.

The above advantages prove to be particularly clear if the lever is essentially in one Direction of movement of the panels is pivotable. In particular, it is meant here that Locating the lever connected to the bezels is substantially rectified Movement like the bezels.

In a tried and tested embodiment of the invention, the adjusting device is a lifting magnet trained, as already mentioned above.

Fig. 1 eine perspektivische Ansicht eines erfindungsgemäßen Scheinwerfers von schräg oben,

Fig. 2 eine perspektivische Ansicht eines erfindungsgemäßen Scheinwerfers von schräg unten,

Fig. 3 eine Ansicht der wesentlichen für den Schweinwerfer verwendeten Bauteile,

Fig. 4 eine Ansicht einer Blendenstellung des erfindungsgemäßen Scheinwerfers für Abblendlicht bei Rechtsverkehr von schräg oben,

Fig. 5 eine Vorderansicht der Blendenstellung gemäß Fig. 4,

Fig. 6 eine Ansicht einer Blendenstellung des erfindungsgemäßen Scheinwerfers für Abblendlicht bei Linkverkehr von schräg oben,

Fig. 7 eine Vorderansicht der Blendenstellung gemäß Fig. 6,

Fig. 8 eine Ansicht einer Blendenstellung für Fernlicht bei Rechtsverkehr von schräg oben, und

Fig. 9 eine Vorderansicht der Blendenstellung gemäß Fig. 8.

The invention is illustrated in more detail below with the aid of the drawing. In this show

1 is a perspective view of a headlight according to the invention obliquely from above,

2 is a perspective view of a headlight according to the invention obliquely from below,

3 is a view of the essential components used for the headlights,

4 is a view of a diaphragm position of the headlamp according to the invention for low beam in right-hand traffic from diagonally above,

5 is a front view of the diaphragm position shown in FIG. 4,

6 is a view of a diaphragm position of the headlamp according to the invention for dipped beam for left-hand traffic from diagonally above,

7 is a front view of the diaphragm position shown in FIG. 6,

Fig. 8 is a view of an aperture position for high beam in right-hand traffic from diagonally above, and

9 is a front view of the diaphragm position shown in FIG. 8.

A vehicle headlight according to the invention is shown schematically in the figures. This consists of a reflector 1, of which only a front one in the figures Area is shown, a light source 30, for example a xenon lamp, a diaphragm arrangement 100 and a lens 16.

The task of the headlamp according to the invention now consists in particular of one To create headlights for right and left-hand traffic, which also includes a high beam distribution can be generated. For this purpose, the headlight in the shown Embodiment via a diaphragm arrangement 100, which consists of two in the height direction adjustable panels 3, 4 there. The one aperture 3 has a course of its top edge on which when the aperture 3 is pivoted into the beam path of the Headlamps gives a low beam distribution for right-hand traffic. Accordingly points the other aperture 4 on a course for low beam for left-hand traffic. When swiveling In the case of both diaphragms from the beam path, a high beam distribution finally results.

The two panels 3, 4 are in the advantageous embodiment shown by two in essential horizontal aperture axes 6, 6a pivotable, the two aperture axes essentially parallel to one containing the optical axis X of the headlamp Vertical plane. As a rule, the aperture axis is parallel to the optical axis of the Headlights arranged, however there are deviations of approx. 45 ° up / down and up to 10 ° laterally quite possible, which with the expression "essentially parallel" to To be expressed.

A carrier element 2 is attached to the front edge of the reflector 1, for example by means of rivets, screws, welding, etc. On this immovable support element, which also serves as a light barrier in a lower area of the headlight, and that is preferably designed as a flat sheet metal part, is a swivel element also formed 20 arranged pivotably about a pivot axis 21. This swivel element 20th can be pivoted between two defined positions, whereby in the two positions secure positioning of the swivel element on the carrier element can be locked. Conveniently, the pivot axis 21 of the pivot element 20 runs approximately in the center this, d. H. approximately in the area of the vertical plane running through the optical axis.

The swivel element 20 has two recesses 22, 23 for the two aperture axes 6, 6a. The two recesses are on both sides of the pivot axis 21 in one outer region of the pivot element 20 is arranged. When you press, for example a handle 25, the swivel element 20 from a first to its second position or vice versa, the one by this pivoting movement Axis 6, 6a from a raised to a lowered position and the second axis 6a, 6 is pivoted from a lowered to a raised position. So that a pivoting is possible, the carrier element 2 has exemptions 24, 24a for the carrier element 2 penetrating aperture axes 6, 6a. It can also be provided that these exemptions 24, 24a are designed as guides for the aperture axes, for what purpose these are then essentially adapted to the diameter of the axes.

As a result of the pivoting of the swivel plate and the associated opening or movement of the two aperture axes 6, 6a becomes an aperture, namely that with the Aperture axis in its upper position, brought into an optically effective position and can be used to generate a low beam while the other Aperture with the aperture axis in a lower position in an optically ineffective Location.

The aperture axes can be formed separately from the swivel element, or they are pressed with the swivel element, for example. In both cases, however, it is advisable if there are clearances or guide slots for the aperture axes in the support element are provided so that the various elements are arranged as close as possible to each other is possible.

Furthermore, a lever 9 and one outside of the reflector are shown in FIGS. 1-3 1, aperture arrangement 100 and lens-shaped optical system arranged adjusting device 11, which is preferably designed as a solenoid. In the illustrated exemplary embodiment are both the lever 9 and the adjusting device, which is designed to be remotely operable, in a lower region of the headlight, d. H. arranged substantially below the reflector, at least the lever can also protrude in some areas beyond the diaphragm arrangement in the direction of the lens.

The lever 9 is pivotable about an axis of rotation 10 on the reflector 1 or the carrier element 2 arranged, which is angled to the rear and towards the reflector is trained.

To switch between low beam and high beam, the lever 9 is via connecting means 8, 8a movably connected to the screens 3, 4. Furthermore, it is about an axis of rotation 10 pivotable lever 9 also with an output member 14 of the adjusting device 11 at a corresponding connection point 15 movably connected. For example it is in the case of a solenoid 11 an armature 14 with linkage. The adjustment device, such as the solenoid, is according to the embodiment shown on the Underside of the reflector and is attached directly to it, for example. But it can also be that the fastening of the adjusting device is in turn angled to it and attached to the rear carrier element is attached.

The output link or linkage, which, for example, as a hook-shaped extension the armature 14 of the solenoid 11 is also connected to the lever 9, and when the solenoid is actuated, for example, the armature with the linkage pulled into the magnet and causes the lever to pivot about its axis of rotation 10. Because of this pivoting movement, the front lens facing area of the lever, in which the connection points 90, 91 with the connecting means lying down, moving and pulling over the lanyards that are about are wire or rod-shaped, the two panels from a raised Position in a lowered position so that light is no longer blocked off from the panels becomes. Both screens are moved down substantially simultaneously, whereby here it should be noted that only one aperture in its optically effective, a low beam generating position was arranged, while the other aperture due to the position of the Swivel element was optically ineffective anyway.

According to the drawing, the panels 3, 4 are usually as flat sheet metal elements formed and have connection points in an area facing away from the aperture axis 6, 6a 28, 29 for the connecting means. In a simple embodiment, these are Junctions 28, 29 according to e.g. B. Fig. 2 as small tabs from the aperture plate bent up and have, for example, small openings in which the connecting means are attached.

In the embodiment shown, the axis of rotation 10 of the lever 9 extends approximately horizontally and perpendicular to the optical axis X, and the movable connection between the output member and lever 9 is below the axis of rotation 10. Unlike in the In the drawing, it is also possible that the lever 9 does not have an orientation in Direction of the optical axis X, but, for example, transverse to it, so that its Axis of rotation 10 runs parallel to the optical axis. When connecting the lever with the The different blinds must then be dazzled, depending on the lever respective horizontal position covered path are taken into account so both Apertures must be moved sufficiently out of the beam path.

The diaphragms 3, 4 are advantageously against the restoring force of a spring 7 in the embodiment shown engages the tabs 28, 29 from their raised in moved their lowered position. When the solenoid 11 is switched off due to the disappearance of the force acting on the anchor, which this in the Magnet pulls in, the two panels by means of the return spring 7 back into their upper Position pressed, the respective optically active diaphragm against a stop 26, 27th is pressed, which defines the low beam position of the aperture 3, 4 exactly. in principle can also generate its own for each of the two diaphragms to generate the restoring force Return spring can be used. Basically, however, the implementation can be that the setting device has a different drive, the actuator too again moved out of the adjustment device, so that the screens as a result of this movement of the actuator can be moved into the optically effective position.

FIGS. 4 and 5 show, for example, the diaphragm position for generating a low beam distribution shown for right-hand traffic. The pivot element 20 is against the stop 26 pressed and locked in this position, so that the aperture axis 6 for the aperture 3 for generating a low beam distribution for right-hand traffic in an upper position is arranged while the other aperture axis 6a is in a lower position. The two panels 3, 4 are pressed by the springs 7 against the stops 26, 27, since the Adjustment device is not actuated and the lever 9 is in an upper, approximately horizontal Position is, as can be seen in FIG. 5. As a result of the fact that the Aperture axis 6 is in an upper position, only the aperture 3 is optically effective, although the second diaphragm 6a is also in a fundamentally raised position.

FIGS. 6 and 7 show the fundamentally similar situation for producing a low beam distribution shown with left-hand traffic. Compared to Figures 4 and 5 is here the pivot member 20 is pivoted about its pivot axis 21 so that it against the Stop 27 is pressed and locked in this position. In this way, the Aperture axis 6a for left-hand traffic in an upper position, and when not switched on This means that the aperture 4 for generating a low beam for Left-hand traffic is swung into the beam path as a result of the force of the return spring.

The aperture 3 is also in a raised position as a result of the lowering its axis 6 is optically ineffective.

Finally, in FIGS. 8 and 9, the situation with a high beam distribution, namely shown here in the position of the swivel element 20 for right-hand traffic, to be noted is that the following explanations also apply to the position of the swivel element for Left-hand traffic are valid. The starting point is the position shown in FIGS. 4 and 5 of the bezels. The aperture axis 6 for the aperture 3 for right-hand traffic is located in an upper one Position, so that this aperture is basically the optically effective. When the The setting device, for example the lifting magnet 11, is now actuated by the high beam and the armature with the linkage 14 is in the lifting magnet up to a not shown Stop pulled inside the coil body of the solenoid. As a result this movement of the output member, the lever 9 is pivoted about its axis of rotation 10 and with its front area facing the lens, in which the connecting means 8, 8a are movably attached, moved downward. That way the two Apertures, both the optically effective aperture 3 and the ineffective aperture 4, after swung below and out of the beam path of the headlamp, and in the exterior of the A high beam distribution is generated for the headlights.

Claims (18)

Vehicle headlight with a light source (30), a reflector (1) reflecting light emitted by the light source, a lens (16) arranged in the beam path in front of the reflector (1) and a diaphragm arrangement located between the reflector (1) and the lens (16) (100), which consists of at least two visually close spaced diaphragms (3, 4) which are height-adjustable between at least two defined positions, the diaphragms (3, 4) lying on both sides outside a vertical longitudinal center plane of the reflector (1) Aperture axes (6, 6a) are rotatable, and a first aperture (3) has an upper aperture edge course for generating a first light distribution pattern, and a second aperture (4) has an upper aperture edge course for generating a second light distribution pattern, and in a defined, raised position first diaphragm whose upper diaphragm edge with optically effective areas above the diaphragm edge of the second diaphragm and in a raised, defined position of the second diaphragm whose upper diaphragm edge lies with substantial areas above the diaphragm edge of the first diaphragm,
characterized in that a pivot element (20) rotatably mounted about an axis of rotation (21) is provided, the axis of rotation (21) running essentially parallel to the diaphragm axes (6, 6a) and being arranged in the horizontal direction between the diaphragm axes (6, 6a), the swivel element (20) is coupled to the aperture axes (6, 6a), and when the pivoting element (20) is pivoted, the one aperture axis (6) can be moved from a raised / lowered position to a lowered / raised position and the other aperture axis (6a) can be moved from a lowered / raised position to a raised / lowered position. Vehicle headlight according to claim 1, characterized in that the pivoting element (20) is rotatably mounted on a carrier element (2). Vehicle headlight according to claim 1 or 2, characterized in that the pivoting element (20) has recesses (22, 23) adapted to the aperture axes (6, 6a). Vehicle headlight according to claim 1 or 2, characterized in that the aperture axes (6, 6a) are fixedly connected to the swivel plate (20). Vehicle headlight according to one of claims 2 to 4, characterized in that the carrier element (2) has clearances (24, 24a) for the aperture axes (6, 6a). Vehicle headlight according to one of claims 1 to 5, characterized in that the aperture axes (6, 6a) and the pivot axis (21) run substantially parallel to the optical axis (X) of the headlight. Vehicle headlight according to one of claims 1 to 6, characterized in that the axis of rotation (21) runs approximately centrally through the pivot element (20) in the region of the vertical longitudinal center plane containing the optical axis (X). Vehicle headlight according to one of claims 1 to 7, characterized in that the pivoting element (20) has an essentially flat configuration. Vehicle headlight according to one of claims 2 to 8, characterized in that the pivoting element (20), viewed in the light exit direction, is arranged after the carrier element (2) and in front of the diaphragm arrangement (100). Vehicle headlight according to one of claims 1 to 9, characterized in that the carrier element (2) and / or the pivoting element (20) is / are arranged at an optically short distance from the diaphragm arrangement (100). Vehicle headlight according to one of claims 1 to 10, characterized in that the screens (3, 4) can be pivoted essentially simultaneously from a respectively raised (lowered) position into a lowered (raised) position by means of an adjusting device (11). Vehicle headlight according to claim 11, characterized in that the adjusting device (11) has a movable output member (14) which is movably connected to a rotatably mounted lever (9), and the lever (9) via connecting means (8, 8a) to the Apertures (3, 4) is movably connected. Vehicle headlight according to claim 12, characterized in that the connecting means (8, 8a) are wire-shaped. Vehicle headlight according to claim 12, characterized in that the connecting means (8, 8a) are rod-shaped. Vehicle headlight according to one of claims 12 to 14, characterized in that the connecting means (8, 8a) are each connected to the screens (3, 4) in an outer area opposite the area of the screen axis (6, 6a). Vehicle headlight according to one of claims 11 to 15, characterized in that the adjusting device (11) and / or the lever (9) is arranged outside the optical system formed by the reflector (1), lens (16) and diaphragm arrangement (100). Vehicle headlight according to one of claims 11 to 16, characterized in that the lever (9) is pivotable substantially in one direction of movement of the screens (3, 4). Vehicle headlight according to one of claims 11 to 17, characterized in that the adjusting device (11) is designed as a lifting magnet.

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