FR2624453A1 - MOTOR VEHICLE PROJECTOR WITH TILT ADJUSTMENT SYSTEM - Google Patents

Abstract

The invention relates to a headlight for motor vehicles, of the type comprising a body mounted on a support, with the interposition of a ball joint and a pair of screw members 20, 22 for adjusting the inclination of the headlight. along a horizontal axis and a vertical axis. According to the invention, said screw members 20, 22 are arranged on a plane substantially parallel to the aforesaid horizontal or vertical axis Y-Y, X-X.

Description

The present invention relates to a projector for vehicle

  automotive vehicles, of the type comprising a body mounted on a

  support with interposition of a ball joint and a

  full of screw members for adjusting the inclination of the projector along a horizontal axis and a vertical axis.

  The vertical and horizontal orientations are ac-

  tuellement carried out by two maneuvering screws arranged diagonally with respect to the projector. The adjustment is carried out manually or with suitable devices from the rear of the projector, in the engine compartment. Such an arrangement of the maneuvering screws sometimes proves to be incompatible with the dimensions existing in the engine compartment. As a result, access to said maneuvering screws often turns out to be unpleasant, in particular for the screw which acts on the lower side of the headlamp and which comes to be very low. It was therefore adopted references

  hoses or gears, but if they facilitate

  attempt the maneuver, they significantly complicate the system

  adjustment and thus increase the cost of the projector.

  The object of the present invention is to provide a pro-

  jector of the type specified in the preamble, which does not have the above drawbacks and which turns out to be of a

simple and economical.

  According to the invention, this object is achieved thanks to the fact that the aforesaid screw members are arranged on a plane substantially parallel to the above horizontal or vertical axis. It is thus possible to position the two adjustment screws on the same side of the projector (for example, the

  upper), in order to allow movements of said projection

  around a vertical or horizontal axis.

  Preferably, the projector according to the invention comprises

  takes a first screw member cooperating with a first rack nut fixed to the support; an auxiliary element supported by the first screw member and connected axially relative to the latter; a second cooperating screw member

  with a second rack nut fixed to the auxiliary element

  re; and a first and a second ball joint interposed between the screw members and the body of the projector. Other advantages and features of the projector

  according to the invention will clearly result from the des-

  detailed description which follows, provided purely by way of example

  ple nonlimiting, with reference to the accompanying drawings, in which: FIG. I is a rear perspective view, partially in section, of a headlight according to the invention, FIG. 2 is a sectional view along line II-II of FIG. l, Fig.3 is a perspective view similar to Fig.1 and illustrating a variant of the projector according to the invention, Fig.4 is a sectional view along the line IV-IV of Fig.3. Referring to the drawings, there is shown by 10, as a whole, a headlight for motor vehicles provided with a body 12 of substantially quadrangular shape, installed on a flat support 14 (for example, the body of the motor vehicle) with interposition from a joint to

  main ball joint 16 and a pair of ball joints

  liaries 18, associated respectively with a first and a

second adjusting screw 20, 22.

  The first adjusting screw 20 has a small part

  lane 20a engaging on a corresponding rack nut

  dant 24 of the support 14 and a part 20b rotatably mounted

  inside a through hole 26 of an auxiliary element

  re support 28. The first adjustment screw 20 also has a hexagonal operating head 30 and a pair of elastic washers 32, capable of axially connecting the

  screw 20 relative to the auxiliary support element 28.

  The second adjustment screw 22 engages by screwing on a corresponding threaded part 28b of the auxiliary element 28 and has, in a similar manner to. the first adjustment screw 20, a hexagonal operating head 34. The second adjustment screw 22 is mounted with play in

  a through hole 36 of the support 14.

  During the angular adjustment of the headlamp beam, the operator intervenes on the hexagon heads.

  nales, 30 and 34, respectively, of the first and of the

  adjusting screw 20, 22. To adjust the inclination of the

  projector in the horizontal plane (the concepts * of horizon-

  tal and vertical referring to the projector mounted on the vehicle

  automobile) the operator intervenes on the first screw

  which, by engaging in the rack nut 24, provo-

  that the rotation of the body 12 of the projector 10 around a

  vertical axis indicated in the drawings by the reference X-X.

  When the inclination of the projector has to be adjusted in a vertical plane, the operator acts on the second screw 28b of the auxiliary element 28, causing the body of the projector 12 to rotate about a horizontal axis indicated on the

drawings by reference Y-Y.

  In Fig. 3 and 4, an analog projector is illustrated.

  gue to that described, which has the distinguishing characteristic

  tive to present a better accessibility for the

  glage. It has been kept for similar organs the

  same reference numbers, increased by 100.

  The projector 110 has an auxiliary element 128 provided with a part 29 in which a threaded hole 128b is formed. It is articulated to the auxiliary element 128, at 50, along a substantially horizontal axis, an element

  lever 52, L-shaped, having a first end

  mite 52a with an oblong hole 53 cooperating with an ex-

  end 122a of the second adjustment screw 122 and a se-

  end cap 52b cooperating with a connecting rod element 54,

  articulated to the body 12 by the auxiliary ball joint 18.

  Adjusting the tilt of the projector 110 by

  rotation around the vertical axis X-X is completely identi-

  than the one described above. Regarding the regulation

  age of the inclination by rotation around the horizontal axis-

  tal Y-Y, the rotation of the second adjustment screw 122 provo-

  that, thanks to the engagement between the end 122a and the oblong hole 53, the rotation of the lever element 52 around the

  pivot 50, which controls the movement of the connecting rod 54

  sant in the hole 36, this movement rotating the body 12 around the above horizontal axis. It is obvious that the operating head 134 of the second adjusting screw 122 is placed in the raised position so as to facilitate

  its actuation. Naturally, it is understood that the ef-

  fets of the present invention extend to models that provide the same utility using the same principles

of the invention.

Claims (4)

  1. Headlamp for motor vehicles, of the type comprising a body mounted on a support, with the interposition of a ball joint and of a pair of screw members for adjusting the inclination of the headlamp along a horizontal axis. zontal and a vertical axis, characterized in that said   screw members (20, 22; 122) are arranged on a sensitive plane   clearly parallel to the above horizontal or vertical axis (Y-Y, X-X).   2. Projector according to claim], characterized   in that it comprises a first screw member (20) cooperated   rant with a first rack nut (24) fixed to the support   (14), an auxiliary element (28, 128) supported by the first   mier screw member (20) and connected axially with respect thereto, a second screw member (22, 122) cooperating with a second rack nut (28b, 128b), fixed to the element   auxiliary (28, 128) and a first and a second rotary joint   tule (18) interposed between the screw members (20, 22, 122)   and the body (12) of the projector (10).   3. Projector according to claim 2, characterized in that the-first and the second screw member (20, 22) are parallel to each other.   4. Projector according to claim 2, characterized   in that the second screw member (122) is arranged sensitive-   orthogonally to the first (20) and in that it comprises   an L-shaped lever element (52) hinged to the   auxiliary ment (128) along a substantially horizontal axis   tal, a first end (52a) of the lever element   (52) cooperating with the second screw member (122), a se-   end cap (52b) cooperating with the body (12) of the   jector (110) with the interposition of a connecting rod (54).