FR2611253A1 - PROJECTOR FOR MOTOR VEHICLES COMPRISING MEANS FOR LOCKING THE LAMP HOLDER DEVICE - Google Patents

Abstract

PROJECTOR FOR VEHICLES, IN WHICH A PARABOLIC REFLECTOR 2 HAS A TOP HOLE FOR A LAMP AT ITS TOP AND SUPPORTS BEHIND ITS TOP HOLE 4 A LAMP HOLDER DEVICE. IN THE LAMP HOLDER DEVICE, A GUIDING DEVICE PROVIDED PERPENDICULARLY TO AN OPTICAL AXIS 5 OF THE REFLECTOR 2 AS A SUPPORT FOR AN INTERMEDIATE FLANGE 10 OF THE LAMP AND WITH TWO HALF COVERS 18, 19 SLIDING MOUNTS ON THE GUIDING ELEMENT, BETWEEN A CLOSING POSITION IN WHICH THE TWO HALF COVERS 18, 19 RADIALLY ENGAGE A BASE 9 OF THE LAMP AND AXIALLY THE FLANGE 10 OF THE LAMP TO LOCK THE SAID FLANGE AGAINST THE GUIDING ELEMENT, AND AN OPENING POSITION IN WHICH THE TWO HALF COVERS 18, 19 MUTUALLY DEFINE AN OPENING ALIGNED WITH THE TOP HOLE 4 AND OF A SUFFICIENT WIDTH TO ALLOW THE PASSAGE OF THE FLANGE 10 OF THE LAMP 7.

Description

The present invention relates to a projector

  for vehicles and for motor vehicles in particular.

  Headlamps for vehicles include standard

  Also a parabolic reflector at the top of which there is a through hole coaxial with an optical axis of the

  said reflector and able to allow the mounting of a lamp.

  In known spotlights, the reflector sup-

  door, behind its own top, a device

  lamp normally comprising a toroidal body coaxial with said aperture hole., t and defining a bearing and centering surface for an intermediate flange of the lamp. The lamp holder generally further comprises a

  spring element, which is provided with a fixing element

  tion for its connection to said toroidal body and suscep-

  tible to be mounted on said toroidal body to axially fix said flange on the corresponding bearing and

  thus blocking said lamp on the reflector. The disposi-

  tif lamp holder finally includes a protective cap

  rubber or other elastic material, which is soft

  lé on the toroidal body and envelops the posterior part-

  re of the lamp, which does not allow passage outside

as terminals of said lamp.

  In known projectors of the type described more

  top, the particular structure of the lampholder device

  pe has many disadvantages of an eco-friendly nature

nomic than practical.

  First, the lamp holder is

  consisting of a large number of parts, the realization

  tion and assembly, both between them and at the reflector,

involves a significant cost.

  Second, the posterior hood of the pro-

  tection does not only make the posterior part of the

  relatively bulky projector, but also complicated

  the lamp replacement operations. In addition, as the rear cap is constituted by

  an elastic material, it is normally subject to

  nomenes of aging and can deteriorate to the point that it no longer guarantees the watertightness of the projector

the back.

  The object of the present invention is to provide a

  headlamp for vehicles in which the device

  lamp has a structure that eliminates everything

  at least partially, the disadvantages set out above

sus.

  According to the present invention, a pro-

  nozzle for vehicles, and for motor vehicles in particular, comprising a parabolic reflector, a hole

  at the top produced through said reflector, coaxial-

  ment to an optical axis thereof, a device

  lamp supported by said reflector at the rear of said aperture hole and a lamp detachably coupled to said lamp holder device and mounted through said lamp

  top hole; said lamp comprising a flange and the

  said lamp-holder device comprising a support element

  integral with said reflector and defining a scope

  annular for said flange, and means for blocking

  clamps of said flange on said span, characterized

  in that said blocking means comprise two half

  covers connected to said support element and movable relative to this between a closed position in

  which the two half-covers are arranged in con-

  mutual tact and engage radially on the base of the-

  said lamp and, axially, said flange to block this-

  te last against said scope, and an open position

  in which said two defined half-covers

  feels between them an opening essentially aligned with

  said aperture hole and of a width sufficient to allow

put the passage of said flange.

  The invention will now be described in detail.

  sant reference to the accompanying drawings which illustrate a non-limiting exemplary embodiment, in which: Figure 1 is a rear elevation view of a preferred embodiment of the projector according to the present invention; Figure 2 is a view similar to that of Figure 1, but relating to the projector in another active configuration, Figure 3 is a section taken along line III-III of Figure 2, Figure 4 is a section taken along line IV -IV of Figure 3, and

  Figure 5 is a front elevation view of a

tail of the previous figures.

  With reference to the accompanying drawings and, in particular

  culier, in Figure 3, denoted by 1, in its set

  ble, a headlamp for motor vehicles comprising

  a parabolic reflector 2 provided, at its own end

  posterior tee, of a cylindrical collar 3 through the

  which extends a vertex hole 4, coaxial to an optic axis

than 5 of said reflector 2.

  The headlamp 1 further comprises a lamp-holder device generally designated by 6 and supported by the reflector 2 behind the aperture hole 4, and

  a lamp detachably coupled to the device

  te-lamp 6 and mounted through the aperture hole 4. The lam-

  pe 7 includes a light bulb 8 arranged inside

  of the reflector 2 and a rear cap 9 making

  projection at the rear of the lamp holder 6.

  The bulb 8 and the base 9 are separated one from

  the other by a flange 10 axially engaged by the device

  lamp holder 6. In particular, the lamp holder

  lamp 6 comprises a support element constituted by a plate 11, having in plan form essentially

  rectangular and arranged perpendicular to the op axis

  tick at the rear end of the collar 3. The latter extends through a hole in the plate 11 and defines an annular bearing surface 12 of the flange 10. In particular, the

  reach 12 has at least one recess 13 suitable for receiving

  see a projection 14 of the flange 10 to determine my-

  unequivocally the angular mounting position of the lam-

eg 7 on said span 12.

  The plate 11 is supported axially by the collar

  let 3 and, along its long longitudinal axis, by two ribs 15 extending behind the external surface of the reflector 2, ribs to which the plate 11 is connected

  removable by screws 16.

  The lamp holder device 6 finally comprises a device

  positive, designated as a whole by 17, for blocking

  removably from the flange 10 on the bearing 12.

  The locking device 17 comprises two half

  covers 18 and 19, connected to plate 11 and movable by

  relation to this between a closed position (Figu-

  re 1) in which the half-covers 18 and 19 are

  placed in mutual contact and radially engage the base 9 of the lamp 7 and, axially, the flange 10 to block it against the bearing 12, and ureposition opening (Figure 2) in which the two half-covers 18 and 19 mutually define an opening essentially aligned with the hole 4 and of a width sufficient to

  allow the passage of the flange 10.

  In particular, each of the two half-covers

  18 and 19 is slidably mounted along the plate

  that 11 parallel to said major longitudinal axis of this

  this and in a direction indicated by arrow 20, per-

  pendulum to the optical axis 5. For this purpose, each of the

  half-covers 18 and 19 comprises a curved wall 21, la-

  which is essentially in the shape of a spherical half-cap

  risk whose concavity is turned towards the reflector 2 and provided with two opposite lateral edges 22, parallel

  arrows 20 and each having an appendix 23 (Fi-

  gure 4) facing the reflector 2. Each appendage 23

  has a lateral groove 24 which is engaged by each

  one of the lateral edges 25 of the plate 11 and which form a sliding guide for the two half-covers 18 and 19. Each of the appendages 23 extends in front of

  the plate 11 towards the reflector 2 and can engage laterally

  ralement on a corresponding stop element, constituted by an appendage 26 extending behind the external surface of the reflector 2 and integral with it, when the corresponding half-cover 18 or 19 is moved towards

said open position.

  Each half-cover 18 and 19 is provided with an elastic seal 27 applied to a concave surface of the corresponding curved wall 21 and having the function, both of compressing the flange 10 of the lamp 7 in contact with the corresponding bearing 12, that to guarantee the watertight closure at the rear of the reflector 2. For this purpose, each

  seal 27 includes a lip 28 extending in a direction

  tion substantially perpendicular to said joint 27 so

  re to cover an end edge 29 of the half-cover

  correspondent 18 or 19 facing the other half-cou-

  circle. Each edge 29 is substantially rectilinear, except

  tion made of its central part, which defines an evi-

  dement 30 semi-circular with a radius essentially equal to that of the base 9 of the lamp 7. Thus, when the two half-covers 18 and 19 are moved towards one another

  in the closed position, not only the seals 27 come

  gradually come into contact with the periphery of the flange 10 in order to block it inside the bearing surface 12, but also the lips 28 thus come into mutual contact

  with the lateral surface of the base 9, which ensures the closing

  hermetically sealed reflector at the rear.

  The movements of the two half-covers 18 and 19 along the plate 11, from and towards the closed position, are carried out by hand by

  the operator, who acts on two appendages 31

  bordering behind the outer surface of said two de-

mid-covers 18 and 19.

  The half-cover 18 has outside of the side edges 22, respectively, a male element 32 and

  a female element 33, which cooperate by snap

  pectively with a female element 33 and a male element

  32, carried by the half-cover 19 to maintain the

  half-covers 18 and 19 connected together in said po-

closing location.

  From the above description, it follows

  clearly that the locking device 17 is extreme

  mentally functional since the movement of the two half-covers 18 and 19 in the closed position can be carried out by an operator using only one

  one hand, the other hand can be used for intro

  duction of the lamp 7, as shown in Figure 3.

  In addition, the structure of the locking device

  17 has advantageous simplicity features.

  city and building economy. In fact, the use of half-covers 18 and 19 makes it possible to eliminate both the lamp retaining spring and the corresponding fixing devices, as well as the rear protective cap existing in known headlights; it comes out

  further clearly from the foregoing description that

  the two covers 18 and 19 are perfectly identical to each other and can be manufactured using only one

single mold.

  As shown, the bearing surface 12 is formed on the rear end of the collar 3. According to a variant

  not shown, the scope 12 can on the other hand be

  gée on the surface of the plate 11 opposite to that which

  faces the reflector 2. It is thus possible, by replacing

  simply placing the plate 11, to adapt the projector

1 to any type of lamp.

Claims (15)

  1. Headlamp for vehicles and motor vehicles   biles in particular, comprising a parabolic reflector   (2), a top hole (4) made through said reflector   tor, coaxially to an optical axis (5) thereof, a lamp holder device (6) supported by said reflector (2) behind said aperture hole (4) and a lamp (7) detachably coupled to said lamp holder device (6) and mounted through said top hole (4); said lamp (7) comprising a flange (10) and said device   lamp holder (6) comprising a solid support element   re of said reflector (2) and defining an annulai-   re (12) for said flange (10), and locking means (17) which can be released from said flange on said bearing surface (12),   characterized in that said blocking means comprises   there are two half-covers (18, 19) connected to said support element and movable relative to the latter between a   closed position in which said two half   covers are arranged in reciprocal contact and   act radially on a base (9) of said lamp and   axially on said flange (10) to block the latter   against said scope (12), and an open position   in which said two defined half-covers   feels between them an opening essentially aligned with said aperture hole (4) and of a width sufficient to   allow the passage of said flange (10).   2. Projector according to claim 1, character-   laughed in that each of the two half-covers (18, 19)   is slidably coupled to said support member   port, said support member comprising guide means slidably coupled to each of the two half-covers (18, 19) and extending in one direction   sliding essentially orthogonal to said op axis tick (5).   3. Projector according to claim 2, character-   i, laughed in that stop means are provided for stopping each of said two half-cQUvercles (18, 19) in said open position.   4. Projector according to claim 3, character-   in that said stop means are carried by said   reflector (2) and are integral therewith.   5. Projector according to any one of the claims.   cations 2, 3 or 4, characterized in that said support element comprises a plate (11) arranged opposite said   top hole (4) and is connected to said reflector (2), ladi-   the plate (11) having a substantially rectangular shape   and being provided with a central hole opening coaxia-   lement said aperture hole (4), said bearing surface (12) being   coaxial with said central hole, and two opposite edges of the   said plate (11) constituting said guide means.   6. Projector according to claim 5, character-   laughed at in that removable means of assembly are   provided for connecting said plate (11) to said reflector (2).   7. Projector according to any one of the claims.   cations 2 to 6, characterized in that each of the two half   covers (18, 19) comprises a curved wall (21) sensitive   clearly in the form of a spherical half-cap whose conca-   vity is turned towards said reflector (2).   8. Projector according to claim 7, character-   laughed in that each of the curved walls (21) has   two opposite lateral edges (25) parallel to said direction   sliding, a grooved element (24) being carried   by said curved wall (21) along each of its pro-   pres lateral edges (25) and said grooved element (24)   being positively engaged by said guide means.   9. Projector according to any one of the res-   previous dications, characterized in that means   blocking elastics (17) are supported by each of the   said two half-covers (18, 19) to block said   flange (10) on said seat (12) when said half-neck   circle is arranged in the closed position.   10. Projector according to any one of the claims.   cations 7 or 9, characterized in that for each of said two half-covers (18, 19), said elastic locking means (17) comprise an elastic seal (27) applied   that on a concave surface of said curved wall corresponds to laying (21).   11. Projector according to claim 10, character-   laughed in that said seal (27) comprises a lip (28) cooperating with the seal in said closed position   with a corresponding lip (28) of the seal (27) of the be half-cover (18, 19).   12. Projector according to any one of the claims.   previous cations, characterized in that the means of   pledge to click desse3tables are carried by said half   covers (18, 19) to block the latter, one by   relative to the other, in said closed position.   13. Projector according to claim 12, character-   laughed at in that said means of engagement include   at least one female element (33) carried by one of said half   covers (18, 19) and -n corresponding male element (32)   carried by the other half-cover (18, 19) and suitable for engaging   manage by clicking said female element (33).   14. Projector according to claim 13, charac-   terized in that each of said covers (18, 19) carries   a male element (32) and a female element (33).   15. Projector according to claim 14, charac-   terized in that said two half-covers (18, 19) are identical to each other.