EP1520135B1 - Light-diffusing component comprising an adjustable screen arrangement - Google Patents

Abstract

The invention relates to a light-diffusing component of a combined high-beam and low-beam headlight, particularly for motor vehicles, comprising a reflector, a source of light, a screen, and a drive unit for adjusting the screen. The cross section of the reflector opening through which light penetrates has to be covered at different degrees in order to switch between the low beam and high beam, wherefor a screen is mounted in elastic leaf spring joints behind the reflector via a screen support. The screen is swiveled up or down in front of the light-penetrating opening by means of a drive unit. The inventive light-diffusing component is designed such that the screen system, suspension, and drive unit thereof comprise a small number of simple low-mass parts.

Description

The invention relates to a light distribution assembly with an adjustable diaphragm arrangement for a combined high and low beam headlight, in particular for motor vehicles; with a reflector and a light source, wherein the diaphragm arrangement has a Abblendblende and a drive for adjusting the Abblendblende.

From EP 0 723 108 A1 a vehicle headlamp is known in which a diaphragm system consisting of a fixed and a movable diaphragm is arranged between a reflector and a lens. The fixed relative to the reflector and the lens aperture covers the area of the light exit opening of the reflector, which is not required for the generation of high beam. Over the upper edge of this diaphragm, the movable diaphragm is pushed linearly by means of a drive to produce low beam.

From DE 198 43 287 A1 an adjustable diaphragm arrangement for a vehicle headlight is known in which a diaphragm support and its diaphragm are positioned in front of the light exit opening of the reflector. The panel is operated by a linear rack.

The present invention is based on the problem to develop a light distribution assembly of a combined high and low beam headlamp, in which the aperture system whose suspension and drive consists of a few, simple and low-mass components. The components are intended for high precision, functional reliability and absolute freedom from maintenance easy to assemble and adjust, and with very little movement joints and guides.

This problem is solved with the features of the main claim. For this purpose, the dimming diaphragm positioned in front of the light exit opening of the reflector forms part of a diaphragm carrier guided along the reflector outside. The diaphragm support has as hinges at least two - at least partially made of elastic deformable material - cantilevers. In the rear exterior of the reflector at least one attachment point is available for each cantilever. The diaphragm carrier comprises a traverse which extends below or above the reflector and which is arranged on the diaphragm carrier outside the two cantilever arms. On the side of the reflector - e.g. Top or bottom -, on which the traverse runs, a drive (130) is mounted, whose actuator is coupled to the crossbar.

Such a light distribution assembly is part of a conventional two-throw system. The latter is a lamp that can produce low beam and high beam. Such lamps generally have single-wire lamps, for example gas-discharge lamps, as lamps. Other bulbs are also conceivable. For the necessary asymmetry of the radiated low beam provide for right or left-hand traffic suitable eg stepped or angled Blendenoberkanten. In order to switch between dipped beam and main beam, the light exit cross section of the reflector must be covered to varying degrees. For this purpose, a diaphragm is used, which is mounted on a diaphragm support behind the reflector in spring-elastic Blattfeder- or film joints. With the help of a drive, the aperture in front of the light exit opening on or pivoted. In the upwardly pivoted state, it represents a dimming diaphragm while in the downwardly pivoted position it is a high-beam diaphragm. Since within a regular lamp operating time, the diaphragm has predominantly the function as a dimming diaphragm, the diaphragm is hereinafter hereafter named.

As a drive for the pivoting movement can be used for a linear actuators, such as electrically operated spindle drives or solenoids or comparable linear motors and piezo blocks. Also corresponding part-turn actuators are conceivable. Alternatively, memory metals may also be used in the film hinge areas, for example.

Figur 1:

Explosionszeichnung der Lichtverteilungsbaugruppe;

Figur 2:

Lichtverteilungsbaugruppe im Einbauzustand;

Figur 3:

Figur 2 von vorn unten ohne Linse, eingestellt für Fernlicht im Rechtsverkehr;

Figur 4:

Blendenträger mit Linksverkehrblende;

Figur 5:

Figur 4 ohne Linksverkehrblende;

Figur 6:

Linksverkehrblende

Figur 7:

Figur 4 von vorn mit verdeckter Linksverkehrblende;

Figur 8:

Figur 4 von vorn mit aktivierter Linksverkehrblende;

Figur 9:

Lichtverteilungsbaugruppe ohne Linse in der Seitenansicht, Rechtsverkehr

Figur 10:

wie Figur 9, Ansicht von schräg vorn

Figur 11:

wie Figur 9, jedoch mit aktivierter Linksverkehrblende;

Figur 12:

Ansicht von schräg vorn zu Figur 11;

Figur 13:

wie Figur 9, allerdings ist der Blendenträger in Fernlichtstellung;

Figur 14:

Ansicht von schräg vorn zu Figur 13;

Figur 15:

Ansicht von schräg hinten zu Figur 9;

Figur 16:

Ansicht von schräg hinten zu Figur 13.

Further details of the invention will become apparent from the dependent claims and the following description of a schematically illustrated embodiment.

FIG. 1:

Exploded view of the light distribution assembly;

FIG. 2:

Light distribution module in installed condition;

FIG. 3:

Figure 2 from the bottom front without lens, set for high beam in the right-hand traffic;

FIG. 4:

Mirrors with left-hand traffic aperture;

FIG. 5:

Figure 4 without left traffic aperture;

FIG. 6:

Driving on the left panel

FIG. 7:

Figure 4 from the front with hidden left traffic aperture;

FIG. 8:

Figure 4 from the front with activated left traffic aperture;

FIG. 9:

Light distribution module without lens in side view, right-hand traffic

FIG. 10:

like Figure 9, view from diagonally forward

FIG. 11:

like Figure 9, but with activated left traffic aperture;

FIG. 12:

Oblique view from the front to FIG. 11;

FIG. 13:

like Figure 9, however, the lens carrier is in high beam position;

FIG. 14:

Oblique view from the front to FIG. 13;

FIG. 15:

Oblique view from the rear to FIG. 9;

FIG. 16:

Oblique view from the rear to FIG. 13.

1 shows an exploded view of the light distribution assembly of a motor vehicle headlight in a dimetric representation. You can see u.a. a reflector (10) with inserted light source (2). At a distance of several centimeters in front of the light exit opening (11) of the reflector (10), a lens (1) is arranged. The reflector (10) and the lens (1) are interconnected by a frame, not shown, or a headlight housing. In the areas of the rear outer surface of the reflector (10), a cross member (30) is integrally formed or attached. At this cross member (30) is e.g. by means of the screws (77, 78) screwed to a cover carrier (40). The diaphragm support (40) has directly in front of the light exit opening (11) a Abblendblende (41) on which a retractable left traffic aperture (100) is mounted and guided. Under the reflector (10), a drive (130) is arranged, the actuator (136) adjusts the diaphragm support (40). The actuator (136) is mounted on the diaphragm support (40).

In Figure 2, the light distribution group is shown in the installed state.

The reflector (10) is, for example, an internally mirrored plastic injection-molded part with an optical axis (8). He is eg a parabolic mirror with three flats (12-14). The flats (12-14) are here flat surfaces, which are each arranged at least approximately parallel to the optical axis (8). The middle flattening (12) is at least approximately parallel to the road surface. The lateral flattenings (13, 14) include with the middle (12) in each case, for example, a 135 ° angle.

The reflector (10) has around the light exit opening (11) a circumferential flange-like edge (16), which in the lower (19) and the lateral (17, 18) edge regions at least partially wider than in the other areas, cf.
Figures 2 and 3. At the lateral areas (17, 18) stop arms (21, 22) are integrally formed. These each have a U-shaped cross section, which tapers towards its free end. The flat underside (23) of the single stop arm (21, 22) is at least approximately parallel to the optical axis (8) and the central flattening (12). Below each stop arm (21, 22) is in the lateral edge region (17, 18) has a slot-shaped, downwardly open recess (25, 26), see. Figures 14 and 16. The single recess (25, 26) widened in the lower third of the slot depth.

The cross member (30) has in the region of the rear outer surface of the reflector (10) is substantially in the form of a flat plate whose long edges at least partially aligned transversely to the optical axis (8) and the central flattening (12). It is arranged on the reflector (10), for example, above the optical axis (8) so that its leading edges (35, 36) penetrate the reflector outer surfaces only approximately halfway. The rest of the front edges (35, 36) overhangs. The length of the cross member (30) corresponds for example to 70% of the diameter of the light exit opening (11). The cross member (30) has on its underside two attachment points (31, 32), cf. Figures 9 and 16. At least in the region of these attachment points (31, 32) he has flat surfaces which include, for example, an angle of 7 ° -8 ° with the optical axis (8) in the vertical center plane (9). Here, the cross member (30) is higher in front than behind. In the region of the attachment points (31, 32), the cross member (30) has in each case a threaded bore (33, 34) which are oriented normal to the attachment surfaces of the attachment points (31, 32), cf. Figure 1. In the area of the threaded bore (31, 32) of the cross member (30) is equipped with a wall thickness, for example, about 50% larger than in its other areas. The threads of the holes (33, 34) can also be produced by einzurrehende thread-forming screws (77, 78).

In the middle lower region of the cross member (30) has a recess, not shown, for receiving the light source (2). The center line of the light source (2) lies on the optical axis (8).

At the bottom of the central flattening (12) of the reflector (10) has two guide rails (27, 28) are arranged, see. FIG. 3.

In Figure 4, the screen carrier (40) is shown with mounted left traffic aperture (100). The diaphragm support (40) is, for example, a multiply bent, thin-walled sheet-metal part, which essentially surrounds a fictitious in-body (140). The imaginary in-body (140) has the shape of a prism whose longitudinal edges in at least one operating state of the light distribution group extend at least approximately parallel to the optical axis (8). The in-body (140) has a front end (141), a top (142), a bottom (143), two vertical side surfaces (145, 146) and two inclined side surfaces (147, 148). The bottom (143) is parallel to the top (142). Both include with the end face (141) each a 90 ° angle. Between the oblique side surfaces (147, 148) and the bottom (143) are each 135 ° angle. The Inkörper (140) is mirror-symmetrically divided by a vertical center plane (9), on which, inter alia, the optical axis (8).

In front of the face (141) lies in the upper area, about the upper half, the Abblendblende (41). It covers at least largely the light exit opening (11) below the stop arms (21, 22). The Abblendblende (41) has an approximately centrally stepped upper edge (42), see. Figure 5, whose contour limits a right-hand traffic aperture. Halfway up, the anti-glare screen (41) has a horizontally disposed, outwardly formed bead (43), e.g. extends over 80% of the local aperture width. The lower region (44) of the dimming diaphragm (41), which extends over approximately 16% of the maximum dimming diaphragm height, is angled forwards by approximately 20 degrees. He (44) has e.g. only the length and lateral boundary which is necessary for covering the light exit opening (11) in the vicinity of the flat (12).

Between the upper edge (42) and the bead (32) are located on both sides of the median plane (9) has two hook-shaped spring supports (47, 48), see. FIG. 5. Both spring supports (47, 48) are bent out of the sheet metal of the dimming diaphragm (41) around a vertical bending line. At their free end they each have a downwardly directed stop (49).

The diaphragm carrier (40), cf. 4, goes laterally along the oblique side surfaces (147, 148) of the fictitious Inkörpers (140) in the grid side parts (51, 52) via. The latter form in the embodiment, cf. Figure 5, a flat hexagonal surface with a triangular (56) and a square aperture (57). The apertures (56, 57) are arranged so that two support struts (53, 54) which lead towards each other at an acute angle to one another and a support strut (55) are formed. The support strut (55) connects the front support strut (53) respectively with the lateral edges of the Abblendblende (41).

Towards the top, the grid side parts (51, 52) merge into the planar vertical side parts (61, 62). These lie against the side surfaces (145, 146) of the fictitious Inkörpers (140). The height of, for example, rectangular vertical side portions (61, 62) corresponds to e.g. 7% of the diameter of the light exit opening (11). Their length is e.g. 50% of the total length of the panel carrier (40).

The cantilever arms (65, 66) adjoin the vertical side parts (61, 62) at a 90 ° bend. Both inwardly bent cantilevers (65, 66) lie in the unloaded state flat on the top (142) of the fictitious Inkörpers (140). The cantilevers (65, 66) run towards the vertical center plane (9). They close with the adjacent vertical side surfaces (61, 62) - in the plane of the upper side (142) - each e.g. a 30 ° angle. In the region of their free ends, the cantilevers (65, 66) are aligned parallel to the median plane (9). At the same time they run on both sides of holes (75, 76) pointed. Before each bore (75, 76) is a slot (73, 74). The straight, possibly the guide serving edges (79) of these slots (73, 74) are aligned parallel to the vertical center plane (9).

In each case in the region between the slot (73, 74) and the trailing edge (63) of the vertical side surfaces (61, 62) of a Blend carrier side is the respective bending zone (71, 72) of the corresponding cantilever arm (65, 66). In the bending zone (71, 72), for example, the width of the cantilever arm (65, 66) is approximately 14% of the diameter of the light exit opening (11). For Abblendblende (41) towards the cantilever arms (65, 66) is always narrower on each side only a stop portion (67, 68) remains. The stopper portions (67, 68) are only slightly narrower than the width of the recesses (25, 26), cf. FIG. 14.

In the plan view of the upper side of the diaphragm carrier (40), all corners and cross-sectional transitions of the cantilever arms (65, 66) are rounded at least in the region of the bending zones (71, 72) in order to minimize notch stresses.

On the underside (143) of the fictitious Inkörpers (140) is a the two grid side parts (51, 52) connecting cross member (80). By the latter, the diaphragm support (40) is closed annularly transversely to the optical axis (8). As a result, the diaphragm body (40) is a dimensionally stable component, at least in the region of the dimming diaphragm (41) and the side parts (51, 52, 61, 62). The lattice-like construction of the side parts (51, 52) contributes to this significantly.

The traverse (80) comprises a transverse web (81) and two tie rods (97, 98). Each tie rod (97, 98) includes at least approximately a right angle with the transverse web (81). The tie rods (97, 98) are located near the side edges of the underside (143). The cross bar (81) consists of a left (83) and a right arm (84). Both arms (83, 84) overlap in the middle third of the transverse strut (81). The arms (83, 84) are connected to each other, for example via two welding points. The welding points are each in the area of the arm ends. The end portions of the arms (83, 84) are in the overlapping zone widened towards the dimming diaphragm (41). In the respective widening (85, 86), there is an elongate opening (87, 88) into which two narrow tabs (93, 94, 95, 96) protrude. The material web which delimits the respective opening (87, 88) at the front is referred to as a dome strip (91, 92). The widenings (85, 86), including the dome bars and the tabs (93, 94, 95, 96) of the arms (83, 84) are each bent by about 30 ° so that they enclose a 60 ° angle.

On the Abblendblende (41) a left traffic aperture (100) is placed, see. FIG. 4. According to FIG. 6, it consists of a stamped, multiply bent sheet metal strip which has an aperture plate (101), a stepped upper edge (102), two leaf springs (121, 122) and two actuating lugs (117, 118). The diaphragm plate (101) is bounded at the top by the approximately centrally stepped upper edge (102). The contour of this upper edge (102) allows a characteristic road illumination of a left-traffic aperture (100). At the two-sided ends of the upper edge (102), the diaphragm plate (101) merges into two flat abutment surfaces (115, 116) which are angled forwards by 90 degrees to the front. On the left contact surface (115) is located on the left outside the bent down actuating tab (117). A comparable actuating tab (118) is also arranged on the outside of the other contact surface (116).

From the abutment surfaces (115, 116), two angled leaf springs (121, 122) extend in the direction of the vertical center plane (9). In the unloaded state, the areas of the leaf springs (121, 122) close to the abutment close with the abutment surfaces (115, 116) at an acute angle of, for example, 10 ° -30 °, cf. Figure 8. The leaf springs (121, 122) are designed kinked, the bend line at least approximately parallel to the optical axis (8). The lying after the bending lines end portions (123, 124) of the leaf springs (121, 122) include with the preceding areas each about 150 °. The bending lines of the leaf springs (121, 122) are arranged independently of the position of the left-hand traffic aperture (100) relative to the dimming diaphragm (41) such that the left-hand leaf spring (121) engages with the end region (123) and the right-hand leaf spring (122). with the area lying in front of the corresponding spring support (47, 48) contacted. By the leaf springs (121, 122), the left traffic diaphragm (100) is loaded, inter alia, with a force component which acts to the right - in the direction of deactivation of the left traffic aperture (100).

At the bottom, the diaphragm plate (101) is delimited by a lower edge (103), which is rectilinear in the middle region. Between this lower edge (103) and the upper edge (102) are three slot-like recesses (114). The webs between the recesses (114) hide the resulting in the manufacture of the spring supports (47, 48) openings in the Abblendblende (41).

Between the lateral ends of the left-hand traffic control panel (100) and the lower edge (103), the remaining lower contour has a shape, the stops (105, 106), notches (111, 112), lift-up bevels (107, 108) and other sections (109, 113). According to FIGS. 6 to 8, the left-hand traffic-control panel (100) has a vertical stop (105) at the left end, to which the sloping lifting ramp (107) and a horizontal section (113) adjoin. Between the stop (105) and the lifting bevel (107) is a notch base (109). At the other end of the left traffic aperture (100) there is a stop (106) with adjacent notch (111). On the notch (111) follows to the left a rising Aufhebeschräge (108), which merges at its left end in a notch (112) forming contour. The Notch (112) lies with the notch base (109) at a height, cf. FIG. 6. The latching notch (111) and the horizontal section (113) are cut by the amount less deeply than the notch (112) and the notch base (109) into the diaphragm plate (101) to which the left-hand traffic control panel (100) is higher than the upper edge (42) of the diaphragm carrier (40).

The diaphragm support (40) has between the upper portion of the Abblendblende (41) and the vertical side parts (61, 62) each have a Eckausnehmung (45, 46). The left-hand traffic aperture (100) used there lies on the guide at the cut edges or cut surfaces of the Eckausnehmungen (45, 46). If the left-hand traffic panel (100) is not needed, it lies in a lowered parking position, cf. et al FIG. 7. In this case, the notch base (109) and the center of the notch (112) lie on the respective bottom of the corner cutouts (45, 46).

To move the left traffic aperture (100) from the parking position it is moved over the right operating tab (118) to the left. In this case, the lifting slips (107, 108) slide over the base of the corner recesses (45, 46) until the stop (106) touches the base of the corner recess (46) or the notch (111) engages there. In the left Eckausnehmung (45) of the horizontal portion (113) comes to rest, see. Figures 8 and 12. In the figure 8, the leaf springs (121, 122) are shown in non-hinged position.

In order to move the left-hand traffic control panel (100) back into its recessed parking position, it is pressed against the actuating lug (117) from the left. In this case, the latching notch (111) of the diaphragm plate (101) jumps out of the corner recess (46). At the lifting ramps (107, 108), the diaphragm plate (101) slips behind the dimming diaphragm (41) until the notch base (109) and the Notch (112) reach the respective bottom of the corresponding Eckausnehmung (45, 46). The right stop (105) limits the return stroke.

The thickness of the panel carrier (40) and the left-hand traffic panel (100) is e.g. 0.4 mm. The material used for both parts, for example, X 12 CrNi 177 or a similar - equipped with spring properties - material used. Non-metallic materials are also conceivable. The latter are then shaped into the necessary physical shape in another process.

As a drive for moving the diaphragm support (40) relative to the reflector (10), a solenoid (130) is used. The lifting magnet (130) has a housing (131) which accommodates a winding and supports a lifting armature (136) protruding from the housing (131) and guides linearly. The housing (131) has on both sides each one of the lateral housing wall projecting guide web (133, 134).

In the exemplary embodiment, when the winding is energized, the lifting armature (136) is pushed further out of the housing (131) by a predetermined stroke. The lifting armature (136) has in the region of its free end e.g. a circumferential annular groove (137).

When mounting the light distribution assembly, first the drive (130) with its housing (131) arranged guide webs (133, 134) from the reflector back side between the guide rails (27, 28) of the reflector (10) and the underside of the central portion ( 12) inserted. For example, the lower edge area (19) serves as the front stop. The housing (131) has eg at the rear of its the flattening (12) facing side a latching lug (135), with which it is locked in a corresponding recess in the reflector (10).

In a further step, the left-hand traffic aperture (100) is placed on the dimming diaphragm (41) of the diaphragm carrier (40). The leaf springs (121, 122) of the left traffic aperture (100) are stretched over the stops (49) under the spring supports (47, 48). The left-hand traffic panel (100) is located i.d.R. in the parking position.

The finished panel support (40) is brought from below to the reflector (10) that the Abblendblende (41) in front of the light exit opening (11) comes to rest. Here are the slots (73, 74) of the cantilever arms (65, 66) in front of the threaded holes (33, 34) of the cross member (30). With the screws (77, 78) of the diaphragm support (40) is pre-fixed without clamping force on the reflector (10).

The transverse web (81) of the traverse (80) is pushed with the two dome strips (91, 92) of the spacers (85, 86) over the free end of the lifting armature (136) that the lifting armature (136) on both sides of two lugs (93, 95) and (94, 96) rests and the coupling bars (91, 92) for positive coupling top and bottom into the annular groove (137) resiliently engage, see. FIGS. 15 and 16.

After coupling the drive (130) of the diaphragm support (40) relative to the reflector (10) or the cross member (30) is adjusted with a device not shown here. For this purpose, index pins engage in the bores (75, 76) and move the screen carrier (40) in the context of the game, the screws (77, 78) along the slots (73, 74) have. Once the distance between the light exit opening (11) and the Abblendblende (41) has reached its desired value, the Tighten screws (77, 78). Possibly. is placed between the heads of the screws (77, 78) and the cantilevers (65, 66) a base plate extending from screw (77) to screw (78). In this way, in the tightening of the screws (77, 78), the cantilever arms (65, 66) are not deformed in the screw rotation direction. Alternatively, the cantilevers (65, 66) on stop edges, fixing bolts or the like can be protected against this deformation.

The mounted panel support (40) is guided over its vertical side parts (61, 62) in the edge region of the reflector (10) in the lateral recesses (25, 26), cf. 15 and 16. Due to the oblique position of the cross member (30) on the reflector (10) of the diaphragm support (40) under the bias of acting as a leaf springs cantilevers (65, 66) at the edge region (17, 18) of the reflector ( 10) located stop arms (21, 22). The screen carrier (40) touches the latter via the stop sections (67, 68), cf. FIGS. 9 and 10.

If the left traffic aperture (100) is activated, cf. Figures 11 and 12, the diaphragm support (40) on the stop arms (21, 22) over the stop surfaces (115, 116). Here, the diaphragm support (40) relative to the reflector (10) is further deflected down. The cantilevers (65, 66) are more bent compared to the right-hand drive setting. By the abutment of the abutment surfaces (115, 116) on the stop arms (21, 22), the upper edge (102) comes exactly to the level that occupies the upper edge (42) as part of a right-hand traffic. Thus, the contours of the upper edges (42, 102) in their respective use with respect to the vertical center plane (9) are mirror-symmetrical.

A maximum deformation of the cantilevers (65, 66) results in the high beam setting. Here, the dimming diaphragm (41) is pivoted downward by pivoting the diaphragm carrier (40), cf. FIGS. 13 and 14. The lifting armature (136) pushes the traverse (80) toward it - partially with bending of the tension struts (97, 98) - to the rear. In this case, the diaphragm support (40) pivots about a fictitious, at least approximately horizontally oriented axis, which runs essentially through the centers of the bending zones (71, 72) of the cantilever arms (65, 66). As a result, the Abblendblende (41) moves in front of the light exit opening in a first approximation on a circular path. The pivoting movement is e.g. limited by the stroke of the actuator (136). In addition, at the lower edge (19) of the reflector (10), an elastic stop for the bending region (44) of the Abblendblende (41) may be arranged. This then results in the end of the pivoting vibration and noise damping.

When the drive (130) is switched off, the diaphragm support (40) swings upwards under the spring action of the cantilever arms (65, 66) against the stop arms (21, 22). Since the bias of the cantilevers (65, 66) then still big enough and the game of vertical side parts (61, 62) in the recesses (25, 26) is small enough, there is no overshoot or bouncing of the diaphragm support (40). In addition, the positively coupled return stroke of the lifting armature (136) dampens the upward movement.

LIST OF REFERENCE NUMBERS

1

lens

2

light source

8th

optical axis, main axis

9

vertical midplane

10

reflector

11

Light opening

12

Flattening, middle, horizontal

13, 14

Flattening, lateral

16

edge

17, 18

Edge areas, laterally

19

Edge area, below

21, 22

stop arms

23

bottom

25, 26

recesses

27, 28

guide rails

30

crossbeam

31, 32

attachment points

33, 34

Threaded holes, holes

35, 36

leading edge

40

Screen support

41

light screen

42

the top edge

43

Beading

44

Kink area, lower area

45, 46

corner recesses

47, 48

spring seats

49

attack

51, 52

Side parts, grid side parts

53

Support strut, front

54

Support strut, rear

55

support strut

56

Breakthrough, triangular

57

Breakthrough, quadrangular

61, 62

vertical side panels

63

trailing edge

65, 66

cantilevers

67, 68

stop sections

71, 72

bending zones

73, 74

slots

75, 76

drilling

77, 78

Screws, possibly thread-forming

79

Leading edge (73, 74)

80

traverse

81

crosspiece

83, 84

Arms, left, right

85, 86

extensions

87, 88

breakthroughs

91, 92

coupling strips

93, 94

Tabs to (91)

95, 96

Tabs to (92)

97, 98

tension struts

100

Driving on the left panel

101

restrictor plate

102

Top edge, stepped

103

Lower edge, straight

105, 106

Stops, left, right

107, 108

Lifting ramps, left, right

109

Kerbgrund, left

111

Notch, right

112

Notch, right

113

Section, horizontal, left

114

Recesses, slot-like

115, 116

Investment surfaces, left, right

117, 118

Actuation tabs, left, right

121, 122

leaf springs

123, 124

Blattfederendbereiche

130

Drive, electromagnet, lifting magnet

131

casing

133, 134

guide webs

135

locking lug

136

Actuator, lifting armature

137

ring groove

140

In body, fictional

141

Face, front

142

top

143

bottom

145, 146

Side surfaces, vertical

147, 148

Side surfaces, sloping

Claims (8)

1. Light distribution module with adjustable light diaphragm configuration for a combined dipped beam/main beam headlamp, aimed particularly at motor vehicles, with a reflector (10) and a light source (2), said light diaphragm configuration showing a light screen (41) and a driving device (130) to adjust said light screen (41),
   wherein

   - said light screen (41), which is set in front of the beam hole (11) of said reflector (10), is part of a screen bracket (40) running along the side of said reflector,

   - said screen bracket (40) has at least two cantilever arms (65, 66) made - at least partly - of an elastic and deformable material and serving as joints,

   - there is at least one attachment point (31, 32) for each cantilever arm (65, 66) at the rear of the outside part of said reflector (10),

   - said screen bracket (40) is comprised of a cross-piece (80) running under or over said reflector (10), whereby said cross-piece (80) is attached to said screen bracket (40) in such a way that it is out-of-line with both cantilever arms (65, 66),

   - a driving device (130) is placed on the side of said reflector (10), where said cross-piece (80) is to be found, whereby the actuator (136) of said device (130) is coupled with said cross-piece (80).
2. The light distribution module of claim 1, wherein said screen bracket (40) is a cage-like sheet metal part with a trapezoid cross-section - narrower at the base and broader at the top -, whereby said cross-section is aligned at least almost normal with the optical axis (8) of said reflector (10) and in reverse symmetry to the vertical mid-plane (9).
3. The light distribution module of claim 2, wherein the sections of said sheet metal part of said screen bracket (40) encompass a fictitious inside body (140), whereby said screen bracket (40) is in no-load condition.
4. The light distribution module of claim 1, wherein said screen bracket (40) is set in front of said beam hole (11) of said reflector (10) and constitutes a light screen (41) that is brought into line with said optical axis (8) of said reflector (10) in a manner that is at least almost normal.
5. The light distribution module of claim 2, wherein the side parts (51, 52) flanking the trapezoid cross-section are connected on both sides to said light screen (41), whereby said side parts are in a normal plane in relation to said light screen (41) - at least in places.
6. The light distribution module of claim 5, wherein said cantilever arms (65, 66) are connected to the upper part (61, 62) of said side parts (51, 52) with a 90° bend, whereby both cantilever arms (65, 66) are in a plane that encompasses a 90° angle with the light screen plane (61) as well as with said vertical mid-plane (9) when said arms are in no-load condition.
7. The light distribution module of claim 5, wherein the side parts (51, 52) taper downwards.
8. The light distribution module of claim 1, wherein said cross-piece (80) is comprised of a brace (81) and two diagonal ties (97, 98), whereby said ties are parallel to the plane where the cantilever arms (65, 66) are when said ties are in a no-load condition.

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