EP3027466A1 - Device for fastening a lighting and/or signalling module on a structural element - Google Patents

Device for fastening a lighting and/or signalling module on a structural element

Info

Publication number
EP3027466A1
EP3027466A1 EP14744333.7A EP14744333A EP3027466A1 EP 3027466 A1 EP3027466 A1 EP 3027466A1 EP 14744333 A EP14744333 A EP 14744333A EP 3027466 A1 EP3027466 A1 EP 3027466A1
Authority
EP
European Patent Office
Prior art keywords
nut
structural element
lighting
module
screw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14744333.7A
Other languages
German (de)
French (fr)
Inventor
Eric LETOUMELIN
Cyril Dubuc
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Vision SAS
Original Assignee
Valeo Vision SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP3027466A1 publication Critical patent/EP3027466A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
    • B60Q1/068—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle by mechanical means
    • B60Q1/0683—Adjustable by rotation of a screw
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F16B25/0068—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw with multiple-threads, e.g. a double thread screws
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/194—Bayonet attachments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/19—Attachment of light sources or lamp holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2200/00—Special features or arrangements of vehicle headlamps
    • B60Q2200/30—Special arrangements for adjusting headlamps, e.g. means for transmitting the movements for adjusting the lamps
    • B60Q2200/32—Ball-joints

Definitions

  • the present invention relates to a lighting and / or signaling assembly comprising a module attached to a structural element integral with the bodywork of a motor vehicle. It relates more particularly to the fixing device of this lighting module and / or signaling on the structural element.
  • a module conventionally comprises a housing inside which are disposed the light source and the associated reflection means for appropriately orienting the light beam at the output of the module.
  • the module housing has fastening tabs adapted to cooperate with screwing means for freezing the position of the module housing relative to the vehicle body, in particular by means of a structural element which also has holes in the housing. fixation. This is done by assembling the module, or modules if the optical needs require several modules, on the structural element, and the assembly is subsequently fixed on the body of the motor vehicle.
  • the adjustment screws having a very fine pitch are small diameter screws and are therefore fragile. They present the risk of not being able to cash all the efforts that the module may have to undergo during assembly of the lighting assembly and / or signaling, or during the rolling of the vehicle and the resulting vibrations.
  • the automated clamping tools used on the assembly lines are programmed to produce portions of a turn, for example quarter turn.
  • This industrial constraint, necessary for an optimized efficiency of the manufacturing process, is hardly compatible with the high precision required of the positioning of a room relative to the other.
  • the present invention aims at providing a device for fixing a lighting and / or signaling module on a structural element of a motor vehicle which allows a very fine adjustment step, to optimize the position of this module, without however weaken the fixation of said module.
  • the invention proposes a device for fixing a lighting and / or signaling module on a structural element, comprising a set of screws adapted to adjust the orientation of the module relative to the element of structure, for example the distance from the module to the structural element.
  • the screw assembly includes a screw adapted to cooperate with two nuts through two separate threads, a first nut being secured to the structural member and a second nut being secured to the module.
  • the separate threads have specific threads in that they are all oriented in the same direction and in that the threads of a first thread are spaced from a pitch different from that with which are spaced the threads of the second thread.
  • the rotation of the screw then generates, for a turn of the screw, a relative displacement of the module with respect to the structural element which is equal to the difference of the pitch of the threads of the two threads.
  • the difference between the pitch of the threads of the two threads is less than 0.4 mm per revolution.
  • the two nuts are arranged in axial stacking so that the screw carries the two threads.
  • the screw comprises a rod having two parts with different diameters, each of the parts having on its outer surface one of the threads.
  • the two nuts it is possible for the two nuts to be arranged around the screw rod without the two nuts being in contact with each other.
  • first nut being pierced with a through bore, while the second nut has a blind hole, or that the first nut is extended axially to cover the second nut, so that it is this first nut which carries means of locking in rotation of the second nut.
  • the invention also relates, more generally, to a lighting and / or signaling assembly comprising a fixing device as described above, characterized in that the first nut and the structural element carry complementary means for l stopping in translation and the locking in rotation of one with respect to the other, while the second nut and the module carries complementary means for stopping in translation and the locking in rotation of the one relative to the other.
  • the first nut comprises a collar, which projects from the outer surface of the first nut, and two diametrically opposed lugs which are disposed on said outer surface at an axial distance from the collar substantially equal to the thickness of the structural element;
  • a compressible annular seal in particular sealing, is disposed axially between the collar and the lugs, said annular seal being adapted to be pressed against a side wall of the collar;
  • the structural element comprises circular bores adapted to be traversed by the adjustable fastening devices, and around which means forming a guide and locking ramp are provided for the fastening of the first nut relative to the structural element in a bayonet-type fastener;
  • the means forming a guide and locking ramp which protrude from the structural element, comprise two diametrically opposite ramp paths and each having an inclined plane in which a housing is formed to receive a pin, said ramp paths being symmetrically separated by cutouts made in the wall defining the edge of the bore at the entrance of the ramp paths so as to form clearances for the passage of the pins of the nuts;
  • the second nut comprises a spherical head disposed at the closed end of the second nut as well as diametrically opposed lugs which are arranged on the outer surface of the second nut so as to extend axially therealong;
  • the head has a substantially spherical shape that a finger extends axially opposite the second nut;
  • the lugs of the second nut are aligned with the lugs of the first nut when the nuts are arranged on the screw rod;
  • the module comprises fixing plates formed of a vertical plate pierced at its center by a through bore forming a cavity adapted to receive the spherical head of the second nut, and four tabs projecting from the plate, the said four legs being grouped in pairs to form two guideways for the lugs of the second nut, in the axial direction of the latter;
  • the module and the structural element are assembled by three attachment zones, among which a force-fixing zone forming a reference point for adjusting the approach between the module and the structural element by two adjustable fixing devices, one being used for horizontal adjustment when the other is used for vertical adjustment;
  • a fixing plate is associated with the adjustable fastening device for the vertical adjustment so that the path formed between the tabs guiding a pin of the second nut axially and vertically by preventing a horizontal movement perpendicular to the axis of the screw and wherein a mounting plate is associated with the adjustable fastening device for the horizontal adjustment so that the path formed between the tabs guiding a lug of the second nut horizontally preventing vertical movement.
  • the invention also relates to a motor vehicle comprising a lighting and / or signaling assembly in which the structural element is adapted to carry several modules.
  • This assembly is particularly adapted to the implementation on the vehicle of an adaptive beam lighting and control means of the plurality of light sources associated with the lighting modules, since the invention allows a very precise positioning of the modules by relative to the structural element and therefore modules between them, which is a mandatory requirement of a light beam material.
  • FIG. 1 is a block diagram illustrating in section the fixing device according to the invention of a lighting module with respect to a structural element both partially shown;
  • FIGS. 2 and 3 illustrate in perspective, respectively front and rear view, a lighting and / or signaling assembly in which three modules are fixed to a structure assembly by means in particular of fixing devices illustrated in FIG. 1
  • FIG. 4 is a detailed view of one of the modules illustrated in FIGS. 2 and 3;
  • FIG. 5 is a detailed view of one of the fastening devices according to the invention associated with the module illustrated in FIG. 4, more particularly the fastening device allowing the vertical adjustment of the fastening of the module with respect to the assembly. structure;
  • FIG. 6 is a perspective view of the fixing device alone, as illustrated in FIGS. 2 to 5;
  • FIG. 7 is a block diagram illustrating a second embodiment of the fixing device according to the invention, in an orientation similar to that of the block diagram illustrated in FIG. 1.
  • a device according to the invention makes it possible to fix a lighting module 2 on a structural element 4.
  • the fixing device mainly comprises a set of screws consisting of a screw 6 and two nuts 8 and 10, one of which is connected to the lighting module and the other is connected to the structural element.
  • the two nuts are stacked axially, that is to say they are arranged along the axis of the screw.
  • the screw rod 12 has along its axis two distinct parts of different diameters.
  • a proximal portion of the rod 14, disposed in the continuity of the screw head 16, has a larger diameter than a distal portion of the rod 18 at the free end thereof.
  • the proximal portion of the rod has on its outer surface a first external thread whose threads, oriented in a certain direction, have a determined pitch.
  • the distal portion of the rod has on its outer surface a second external thread, the threads have a different pitch from that of the first thread, being oriented in the same direction as the threads of the first thread.
  • a first nut 8 is disposed around the proximal portion of the larger diameter shaft and a second nut 10 is disposed around the distal portion of smaller diameter of the shaft.
  • the first nut has on the inner face of a central bore 20 a thread whose direction and the pitch of the threads are adapted to cooperate with the first thread of the screw.
  • the second nut has on the inner face of a central bore 22 a thread whose direction and the pitch of the threads are adapted to cooperate with the second thread of the screw.
  • each nut 8 has axial stop means and rotational locking means, so as to fix the position of the nuts with respect to the structural element and the module respectively when the screw rotates. , so that a displacement in translation of the screw relative to the nuts is generated, this relative displacement being transmitted to the structural element and to the module due to the axial stopping means.
  • the operating principle of such a fixing device is as follows.
  • the position of the structural element is adjusted relative to the module, by screwing the clamping screw inside the two nuts respectively integral in displacement of the module and the structural element.
  • the screw because it presents according to the invention two threads of slightly different pitch and the same direction, allows to obtain a relative displacement of the structural element relative to that of the module which is smaller, for a turn of the screw, that the value of the pitch of one or the other of the threads.
  • the screw When tightening the screw, it advances relative to the first nut disposed around the proximal portion of the rod and made fixed relative to the structural member by the rotational locking means and axial stops.
  • the screw is advancing therefore with respect to the structural element and thus tends to approach the module, by screwing into the second nut disposed around the distal portion of the rod. This results in the displacement of the second nut and the integral module to the first nut and the structural member.
  • the screw 6 moves relative to the structural element 4 over a distance equal to the value of the pitch P1 of the external thread of the proximal portion of the rod.
  • the second nut 10 is screwed into the second nut 10 over a distance equal to the value of the pitch P2 of the external thread of the distal portion of the stem, so that the second nut and the associated module move closer together. to the structural element.
  • the displacement of the module relative to the structural element is equal to the value of the pitch of the thread of the proximal portion minus the value of the pitch of the thread of the distal portion (P1-P2).
  • this type of attachment is particularly useful in the case where one must place several modules on the same structural element.
  • this type of signaling and / or lighting assembly comprising several modules next to each other, which is particularly applied in motor vehicles
  • the position of each of the modules should be very precise with respect to the structural element, so that the position of the modules relative to each other corresponds to the specifications and that we can for example proceed to lighting adaptive beam.
  • the principle of this type of illumination consists in producing a light beam from a plurality of independent sources, of the light-emitting diode type. Depending on the driving conditions and the identified need to illuminate this or that part of the road, in this or that way, each of the light sources is controlled can be off or on, and in varying degrees of intensity.
  • each of the sources In order to obtain a homogeneous beam and which responds efficiently to the lighting control, each of the sources must illuminate very precisely the area assigned to it, and it is therefore necessary for the initial position of the diodes to be as fair as possible. and that it remains reliable over time.
  • the mounting tolerances are thus extremely low and the use of fasteners according to the invention for assembling the modules makes it possible to ensure very small mounting gaps.
  • Each module is attached to the structural element by means of three fastening means, two of which are adjustable fastening devices according to the invention.
  • a first non-adjustable fastening means 24 provides a fixed point which serves from a landmark to adjusting the distance between the module and the structural element.
  • the two adjustable fixing devices 26 and 28 are arranged in line with the fixed point, a first 26 being aligned vertically with respect to this fixed point to adjust the vertical position of the assembly while the other 28 is aligned horizontally with respect to this fixed point to adjust the horizontal position of the set.
  • the two adjustable fastening devices differ for this purpose in that the locking means in rotation of the second nut allow vertical or horizontal sliding.
  • the fixing device mainly comprises a screw 6 and two nuts 8 and 10, of which one is connected to the lighting module 2 and the other is connected to the element 4.
  • the fixing device in which in particular the locking means in rotation of the second nut are adapted to cooperate with elements carried by the lighting module, we can refer to FIGS. 6 and the block diagram of Figure 1.
  • the screw comprises a hexagonal head 16, to facilitate its gripping by the automated clamping means on the assembly line, and a rod 12 which extends axially with two different diameters.
  • the proximal portion of the rod 14 close to the screw head has a larger diameter than the distal portion 18.
  • the proximal portion has on its outer surface an external thread, the threads are oriented in a certain sense by presenting a step P1.
  • the distal portion also has on its external surface an external thread, whose threads are oriented in the same direction as those of the threading of the proximal portion, but having a pitch P2 different pitch P1.
  • the first nut and the second nut are respectively mounted around the thread of the proximal portion and around the thread of the distal portion.
  • the first nut 8 has a cylindrical shape with an axis parallel to the axis of the rod. This first nut is pierced with a central through bore 20, of diameter slightly greater than the diameter of the proximal portion of the rod to be threaded around this rod.
  • the inner face of the bore has a tapped thread whose orientation and the pitch of the threads make it adapted to cooperate with the external thread disposed on the outer surface of the proximal portion of the rod.
  • the first nut further comprises, on its outer surface, means adapted to cooperate with the structural element.
  • a collar 36 extends projecting from the outer surface and two diametrically opposed lugs 38 are disposed on the outer surface at an axial distance from the collar substantially equal to the thickness of the structural element.
  • a compressible annular seal 40 disposed in the axial housing formed between the collar and the lugs, the annular seal being adapted to be pressed against a side wall of the collar to improve the sealing of the assembly.
  • the second nut has a cylindrical shape with an axis parallel to the axis of the rod. Again, the second nut is pierced with a central bore 22 slightly larger than the diameter of the distal portion of the rod, to be threaded around the rod.
  • the inner face of the bore has a tapped thread whose orientation and the pitch of the threads make it adapted to cooperate with the external threading disposed on the outer surface of the distal portion of the rod.
  • the central bore is blind, so that the second nut has an open end 44 to be threaded around the screw shaft, and a closed end 46.
  • the second nut further comprises, on its outer surface, means adapted to cooperate with the lighting module.
  • a head 48 is disposed at the closed end of the second nut and diametrically opposed lugs 50 are arranged on the outer surface so as to extend axially along the second nut.
  • the head has a substantially spherical shape and a finger 52 extends axially said head opposite the second nut.
  • Figures 2 to 5 illustrate, at least in part, one or more lighting modules and a structural member adapted to support these modules.
  • a lighting module 2 comprises a housing 54, closed by a window 56 and inside which is disposed a light-emitting diode, not visible in the figures.
  • cooling means 58 are provided, and different stiffening ribs 60 may be provided on this housing.
  • the module comprises three fixing plates each corresponding to a fixing area of the module.
  • the two fixing plates 62 and 64 associated with the adjustable fastening devices comprise a vertical plate 66 pierced at its center by an opening bore forming a cavity adapted to receive the spherical head of the second nut, and four lugs 68 projecting of the plate. These four legs are grouped in pairs to form two guideways in the axial direction of the second nut.
  • the path formed between the lugs ensures guiding of a lug of the second nut axially and vertically by preventing a horizontal displacement perpendicular to the axis of the screw.
  • the path formed between the lugs ensures the guiding of a lug of the second nut horizontally, preventing a vertical displacement.
  • a quick-fastening washer 70 is pressed against the vertical plate of the fixing plates, opposite the guide tabs to grip, through deformable inner teeth, the finger extending the head of the second nut. When it is mounted in the mounting plate of the module, the finger protrudes beyond the fixing plate and the washer forms stop means in axial position of the second nut.
  • the structural element takes the form of a three-dimensional plate 72 having recesses 74 to allow the passage of cooling means modules.
  • the plate has a front face 78 facing the lighting modules and / or signaling when the assembly is mounted, and an opposite rear face 80.
  • the structural element Around the recesses, the structural element has for each module a fixed stud 81 which extends in axial projection and whose free end carries a spherical head substantially equivalent to the head formed at the end of the second nut of the adjustable fastening device.
  • This fixed stud is adapted to be pressed into the mounting plate of the module corresponding to the fixed fixing area.
  • the plate forming the structural element further comprises, for each module, circular bores 82 adapted to be traversed by the adjustable fastening devices, and around which means forming a guide and locking ramp 84 are provided for the fastening of the first nut. relative to the structural element in a bayonet-type fastener.
  • the diameter of the bores is substantially equal to the external diameters of the nuts, being less than the diameter of the flange extending projecting from the first nut, so as firstly to allow passage to the screw and the second nut, and other part forming a stop at the collar of the first nut to stop axially insertion of the screw.
  • the ramp means extend projecting from the front face 78 and have two diametrically opposed ramp paths 86.
  • Each ramp path has an inclined plane which follows the periphery of the edge delimiting the bore, and a housing 88 is formed at the end of the ramp path to receive a lug.
  • cutouts are made in the wall delimiting the edge of the bore at the entrance of the ramp paths, so as to form clearances 90 for the passage of the lugs of the nuts.
  • the bore, the ramp means and the recesses form an assembly adapted to an insertion of the "push-turn" fastening device specific to a bayonet-type fastener.
  • the nut can only rotate in one direction, towards the entrance of a ramp path, since the rotation in the opposite direction is blocked by the presence of an end wall 92 of the other ramp path, forming a shoulder following the symmetrical cuts of the wall.
  • the fastener is first assembled by mounting the nuts 8 and 10 on the screw 6, matching the right nut to the corresponding part of the rod.
  • the nuts are threaded through the distal portion 18, starting with the first nut 8.
  • Its inner diameter substantially equal to the diameter of the proximal portion 14 allows its displacement along the distal portion of smaller diameter without damaging the threads.
  • the first nut is then screwed onto the external thread of the proximal portion.
  • mount the second nut 10 by screwing it on the external thread of the distal portion, and it is ensured that the lugs 38 and 50 of the two nuts are aligned axially.
  • the fixing device is assembled with the structural element 4 by means of the first nut.
  • the fastener is passed through the bore 82 of the structural member from the rear of the structural member, first passing the second nut.
  • the lugs of the second nut 50 pass through the structural element through the lateral clearances 88 formed on the edge delimiting the bore.
  • the insertion of the fixing device is continued until it is in abutment by contact of the collar 36 and the seal 40 against the rear face 80 of the structural element.
  • the lugs of the first nut 38 are then passed to the other side of the structural element, having also passed through the bore through the same lateral recesses, the lugs of the first nut and those of the second nut being aligned.
  • the first nut is then rotated, so that the lugs of the first nut 38 mount on the ramps 86.
  • the rotation of the first nut substantially a quarter turn, is stopped when the lugs take place in the housing 90 arranged in the ramp path.
  • the lug is no longer pressed against the front face 76 of the structural element which generates the approximation of the collar of the rear face and the compression of the seal between the structural element and the collar.
  • the collar and the lugs of the first nut form axial stop means by axially trapping the structural element, while the housings arranged on the ramp path and the lugs of the first nut form locking means in rotation.
  • locking means make it possible to transform the rotational movement of the screw into a translation movement of the first nut and the axial stop means make it possible to make the first nut and the structural element integral in axial displacement when the first nut moves in translation under the effect of the rotation of the screw.
  • the module and the structural element are connected by force by making the spherical head of the fixed stud 81 cooperate with the corresponding fixing plate.
  • the adjustable fasteners and the module are then connected.
  • the spherical head 48 of the second nut is clipped into the platen of corresponding attachment 62, 64 of the module, by guiding axially this head by the cooperation of the lugs of the second nut with the two facing rails formed between the tabs 68 of the mounting plate of the module.
  • the assembly is secured by means of a quick coupling means 70, of the deformable washer type, attached to the face of the mounting plate of the module from which the finger extends axially extending the spherical head of the second nut.
  • the assembly is then fixed on the body of the vehicle by screwing at the mounting bushings 94 carried by the structural element.
  • the invention achieves the goals it has set for itself, and in particular to propose fastening means for easy mounting of the lighting assembly and / or signaling, and with increased accuracy by adjusting the relative displacement of the module and the structural element, this relative displacement can easily be less than 0.4 mm per turn of the screw.
  • the fixing device according to the invention allows a high precision while favoring the use of an adjustment screw with standard diameters, which makes it possible to ensure stability of the adjustment over time, the screw not being chosen too small and therefore too fragile.
  • the fixing device 101 is generally similar to the device 1 except that the means for locking in rotation of the second nut are carried by the first nut 108, and not by the lighting and / or signaling module 102. This results in a different shape of the first nut and the mounting plate carried by the module.
  • the first nut is extended axially so as to cover the second nut, and it has an internal groove adapted to accommodate the integral lug of the second nut.
  • the mounting of the nuts on the screw is in an extreme position of assembly of the nuts between them.
  • Either the nuts are spaced as far as possible to be threaded together on the screw by the distal portion, and the first nut is first screwed onto the external thread of the proximal portion, or the nuts are grouped together to the maximum; that is to say that the second nut is retracted to the maximum in the first nut, to be threaded together on the screw by the distal portion and first screws the second nut on the distal portion.
  • the mounting plate does not have projecting lugs adapted to axially guide the lugs of the second nut.
  • the assembly of the fixing device is substantially the same, as is the mounting thereof with the module 102 and the structural element 104, and the operation for the fine adjustment of the position of the module relative to the structure element is the same as before.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Connection Of Plates (AREA)

Abstract

The invention relates to a device for fastening a lighting and/or signalling module (2) on a structural element (4), comprising a fastener assembly suitable for adjusting the distance between the module and the structural element. The fastener assembly comprises a screw (6) suitable for cooperating with two nuts by means of two distinct threadings, a first nut (8) being rigidly connected to the structural element and a second nut (10) being rigidly connected to the module. The distinct threadings have specific screw threads in that they are oriented in the same direction, the screw threads of a first threading being separated by a different pitch from that separating the screw threads of the second threading. Rotating the screw generates, for one screw revolution, a relative movement of the module with respect to the structural element that is equal to the difference of the pitches of the screw threads of the two threadings.

Description

DISPOSITIF DE FIXATION D'UN MODULE D'ECLAIRAGE ET/OU DE SIGNALISATION SUR UN ELEMENT DE STRUCTURE  DEVICE FOR FIXING A LIGHTING AND / OR SIGNALING MODULE ON A STRUCTURAL ELEMENT
La présente invention concerne un ensemble d'éclairage et/ou de signalisation comportant un module fixé sur un élément de structure solidaire de la carrosserie d'un véhicule automobile. Elle concerne plus particulièrement le dispositif de fixation de ce module d'éclairage et/ou de signalisation sur l'élément de structure. The present invention relates to a lighting and / or signaling assembly comprising a module attached to a structural element integral with the bodywork of a motor vehicle. It relates more particularly to the fixing device of this lighting module and / or signaling on the structural element.
Un module comporte classiquement un boîtier à l'intérieur duquel sont disposés la source de lumière et les moyens de réflexion associés pour orienter de façon adéquate le rayon de lumière en sortie du module. Le boîtier du module présente des pattes de fixation adaptées à coopérer avec des moyens de vissage pour figer la position du boîtier du module par rapport à la carrosserie du véhicule, par l'intermédiaire notamment d'un élément de structure qui présente également des trous de fixation. On procède ainsi à l'assemblage du module, ou des modules si les besoins optiques nécessitent plusieurs modules, sur l'élément de structure, et on fixe l'ensemble par la suite sur la carrosserie du véhicule automobile.  A module conventionally comprises a housing inside which are disposed the light source and the associated reflection means for appropriately orienting the light beam at the output of the module. The module housing has fastening tabs adapted to cooperate with screwing means for freezing the position of the module housing relative to the vehicle body, in particular by means of a structural element which also has holes in the housing. fixation. This is done by assembling the module, or modules if the optical needs require several modules, on the structural element, and the assembly is subsequently fixed on the body of the motor vehicle.
Les différentes dispositions réglementaires auxquelles doivent se référer les constructeurs automobiles exigent notamment une direction très précise des faisceaux lumineux en sortie du module d'éclairage et/ou de signalisation selon les conditions de circulation et d'éclairage souhaitées. L'utilisation de plus en plus fréquente de diodes électroluminescentes conduit à des architectures multimodulaires nécessitant des systèmes d'alignement précis de chaque module de façon à ce que le faisceau en sortie soit orienté de façon à répondre aux exigences réglementaires.  The various regulatory provisions to which the car manufacturers must refer require in particular a very precise direction of the light beams at the output of the lighting and / or signaling module according to the desired circulation and lighting conditions. The increasing use of light-emitting diodes is leading to multimodal architectures requiring precise alignment systems for each module so that the output beam is oriented to meet regulatory requirements.
Or, les vis de réglage présentant un pas très fin sont des vis de petit diamètre et elles sont donc fragiles. Elles présentent le risque de ne pas pouvoir encaisser la totalité des efforts que le module peut être amené à subir lors du montage de l'ensemble d'éclairage et/ou de signalisation, ou lors du roulage du véhicule et des vibrations qui en résultent.  However, the adjustment screws having a very fine pitch are small diameter screws and are therefore fragile. They present the risk of not being able to cash all the efforts that the module may have to undergo during assembly of the lighting assembly and / or signaling, or during the rolling of the vehicle and the resulting vibrations.
Par ailleurs, quel que soit le diamètre de la vis de réglage utilisée, les outils de serrage automatisés utilisés sur les chaînes de montage sont programmés pour réaliser des portions de tour, et par exemple des quarts de tour. Cette contrainte industrielle, nécessaire à un rendement optimisé du process de fabrication, est difficilement compatible avec la haute précision exigée du positionnement d'une pièce par rapport à l'autre. Moreover, regardless of the diameter of the adjustment screw used, the automated clamping tools used on the assembly lines are programmed to produce portions of a turn, for example quarter turn. This industrial constraint, necessary for an optimized efficiency of the manufacturing process, is hardly compatible with the high precision required of the positioning of a room relative to the other.
La présente invention vise à proposer un dispositif de fixation d'un module d'éclairage et/ou de signalisation sur un élément de structure d'un véhicule automobile qui permette un pas très fin de réglage, pour optimiser la position de ce module, sans toutefois fragiliser la fixation dudit module.  The present invention aims at providing a device for fixing a lighting and / or signaling module on a structural element of a motor vehicle which allows a very fine adjustment step, to optimize the position of this module, without however weaken the fixation of said module.
Dans ce contexte, l'invention propose un dispositif de fixation d'un module d'éclairage et/ou de signalisation sur un élément de structure, comportant un ensemble de visserie adapté à régler l'orientation du module par rapport à l'élément de structure, par exemple la distance du module à l'élément de structure. L'ensemble de visserie comporte une vis adaptée à coopérer avec deux écrous par l'intermédiaire de deux filetages distincts, un premier écrou étant rendu solidaire de l'élément de structure et un second écrou étant rendu solidaire du module. Les filetages distincts présentent des filets spécifiques en ce qu'ils sont tous orientés dans le même sens et en ce que les filets d'un premier filetage sont espacés d'un pas différent de celui avec lequel sont espacés les filets du second filetage. La rotation de la vis génère alors, pour un tour de vis, un déplacement relatif du module par rapport à l'élément de structure qui est égal à la différence des pas des filets des deux filetages.  In this context, the invention proposes a device for fixing a lighting and / or signaling module on a structural element, comprising a set of screws adapted to adjust the orientation of the module relative to the element of structure, for example the distance from the module to the structural element. The screw assembly includes a screw adapted to cooperate with two nuts through two separate threads, a first nut being secured to the structural member and a second nut being secured to the module. The separate threads have specific threads in that they are all oriented in the same direction and in that the threads of a first thread are spaced from a pitch different from that with which are spaced the threads of the second thread. The rotation of the screw then generates, for a turn of the screw, a relative displacement of the module with respect to the structural element which is equal to the difference of the pitch of the threads of the two threads.
Ainsi, on peut réaliser des déplacements en rapprochement ou en éloignement relatif du module par rapport à l'élément de structure qui sont très petits de sorte que pour un quart de tour donné, on obtient des déplacements de réglage aussi précis que ceux que l'on pourrait obtenir avec une vis de très faible diamètre. On comprend bien sur l'intérêt d'obtenir ce réglage précis avec une vis plus résistante qui assure une stabilité accrue dans le temps du réglage initial de la position du module.  Thus, it is possible to make displacements in relative or relative distance from the module relative to the structural element which are very small so that for a given quarter turn, one obtains adjustment movements as precise as those that the one could get with a screw of very small diameter. We understand well the interest of obtaining this precise adjustment with a more resistant screw which ensures an increased stability in the time of the initial setting of the position of the module.
On prévoit avantageusement que la différence entre les pas des filets des deux filetages est inférieure à 0.4 mm par tour.  Advantageously, the difference between the pitch of the threads of the two threads is less than 0.4 mm per revolution.
Selon une caractéristique de l'invention, les deux écrous sont disposés en empilage axial de sorte que la vis porte les deux filetages. La vis comporte une tige présentant deux parties avec des diamètres différents, chacune des parties présentant sur sa surface externe un des filetages.  According to one characteristic of the invention, the two nuts are arranged in axial stacking so that the screw carries the two threads. The screw comprises a rod having two parts with different diameters, each of the parts having on its outer surface one of the threads.
Selon différentes caractéristiques, on peut prévoir que les deux écrous sont agencés autour de la tige de vis sans que les deux écrous soient en contact, le premier écrou étant percé d'un alésage traversant, tandis que le deuxième écrou présente un trou borgne, ou bien que le premier écrou est prolongé axialement pour recouvrir le second écrou, de telle sorte que c'est ce premier écrou qui porte des moyens de blocage en rotation du second écrou. According to different features, it is possible for the two nuts to be arranged around the screw rod without the two nuts being in contact with each other. first nut being pierced with a through bore, while the second nut has a blind hole, or that the first nut is extended axially to cover the second nut, so that it is this first nut which carries means of locking in rotation of the second nut.
L'invention concerne aussi, plus généralement, un ensemble d'éclairage et/ou de signalisation comportant un dispositif de fixation tel que décrit ci-dessus, caractérisé en ce que le premier écrou et l'élément de structure portent des moyens complémentaires pour l'arrêt en translation et le blocage en rotation de l'un par rapport à l'autre, tandis que le deuxième écrou et le module porte des moyens complémentaires pour l'arrêt en translation et le blocage en rotation de l'un par rapport à l'autre. The invention also relates, more generally, to a lighting and / or signaling assembly comprising a fixing device as described above, characterized in that the first nut and the structural element carry complementary means for l stopping in translation and the locking in rotation of one with respect to the other, while the second nut and the module carries complementary means for stopping in translation and the locking in rotation of the one relative to the other.
Selon différentes caractéristiques de l'invention :  According to various features of the invention:
- le premier écrou comporte un collet, qui s'étend en saillie de la surface externe du premier écrou, ainsi que deux ergots diamétralement opposés qui sont disposés sur ladite surface externe à une distance axiale du collet sensiblement égale à l'épaisseur de l'élément de structure ;  - The first nut comprises a collar, which projects from the outer surface of the first nut, and two diametrically opposed lugs which are disposed on said outer surface at an axial distance from the collar substantially equal to the thickness of the structural element;
- un joint annulaire compressible, notamment d'étanchéité, est disposé axialement entre le collet et les ergots, ledit joint annulaire étant adapté à être plaqué contre une paroi latérale du collet ;  - A compressible annular seal, in particular sealing, is disposed axially between the collar and the lugs, said annular seal being adapted to be pressed against a side wall of the collar;
- l'élément de structure comporte des alésages circulaires adaptés à être traversés par les dispositifs de fixation réglables, et autour desquels des moyens formant rampe de guidage et de verrouillage sont prévus pour la solidarisation du premier écrou par rapport à l'élément de structure dans une fixation de type à baïonnette ;  the structural element comprises circular bores adapted to be traversed by the adjustable fastening devices, and around which means forming a guide and locking ramp are provided for the fastening of the first nut relative to the structural element in a bayonet-type fastener;
- les moyens formant rampe de guidage et de verrouillage, qui s'étendent en saillie de l'élément de structure, comportent deux chemins de rampe diamétralement opposés et présentant chacune une forme de plan incliné dans lequel un logement est formé pour recevoir un ergot, lesdits chemins de rampe étant séparés de façon symétrique par des découpes réalisées dans la paroi délimitant le bord de l'alésage à l'entrée des chemins de rampe de manière à former des dégagements pour le passage des ergots des écrous ;  the means forming a guide and locking ramp, which protrude from the structural element, comprise two diametrically opposite ramp paths and each having an inclined plane in which a housing is formed to receive a pin, said ramp paths being symmetrically separated by cutouts made in the wall defining the edge of the bore at the entrance of the ramp paths so as to form clearances for the passage of the pins of the nuts;
- le second écrou comporte une tête sphérique disposée à l'extrémité fermée du second écrou ainsi que des ergots diamétralement opposés qui sont arrangés sur la surface externe du second écrou de manière à s'étendre axialement le long de celui-ci ; the second nut comprises a spherical head disposed at the closed end of the second nut as well as diametrically opposed lugs which are arranged on the outer surface of the second nut so as to extend axially therealong;
- la tête présente une forme sensiblement sphérique qu'un doigt prolonge axialement à l'opposé du second écrou ;  - The head has a substantially spherical shape that a finger extends axially opposite the second nut;
- les ergots du second écrou sont alignés avec les ergots du premier écrou lorsque les écrous sont disposés sur la tige de vis ;  - The lugs of the second nut are aligned with the lugs of the first nut when the nuts are arranged on the screw rod;
- le module comporte des platines de fixation formées d'une plaque verticale percée en son centre par un alésage débouchant formant une cavité adaptée à recevoir la tête sphérique du second écrou, ainsi que de quatre pattes s'étendant en saillie de la plaque, les dites quatre pattes étant regroupées deux à deux pour former deux chemins de guidage pour les ergots du second écrou, dans la direction axiale de ce dernier ;  - The module comprises fixing plates formed of a vertical plate pierced at its center by a through bore forming a cavity adapted to receive the spherical head of the second nut, and four tabs projecting from the plate, the said four legs being grouped in pairs to form two guideways for the lugs of the second nut, in the axial direction of the latter;
- le module et l'élément de structure sont assemblés par trois zones de fixation parmi lesquelles une zone de fixation à force formant un point de repère pour le réglage du rapprochement du module et de l'élément de structure par deux dispositifs de fixation réglable, l'un étant utilisé pour un réglage horizontal quand l'autre est utilisé pour un réglage vertical ;  the module and the structural element are assembled by three attachment zones, among which a force-fixing zone forming a reference point for adjusting the approach between the module and the structural element by two adjustable fixing devices, one being used for horizontal adjustment when the other is used for vertical adjustment;
- une platine de fixation est associée au dispositif de fixation réglable pour le réglage vertical de sorte que le chemin formé entre les pattes assure le guidage d'un ergot du second écrou axialement et verticalement en empêchant un déplacement horizontal perpendiculaire à l'axe de la vis et dans lequel une platine de fixation est associée au dispositif de fixation réglable pour le réglage horizontal de sorte que le chemin formé entre les pattes assure le guidage d'un ergot du second écrou horizontalement en empêchant un déplacement vertical.  - A fixing plate is associated with the adjustable fastening device for the vertical adjustment so that the path formed between the tabs guiding a pin of the second nut axially and vertically by preventing a horizontal movement perpendicular to the axis of the screw and wherein a mounting plate is associated with the adjustable fastening device for the horizontal adjustment so that the path formed between the tabs guiding a lug of the second nut horizontally preventing vertical movement.
L'invention concerne également un véhicule automobile comportant un ensemble d'éclairage et/ou de signalisation dans lequel l'élément de structure est adapté à porter plusieurs modules. Cet ensemble est particulièrement adapté à la mise en place sur le véhicule d'un éclairage à faisceau adaptatif et des moyens de commandes de la pluralité des sources lumineuses associées aux modules d'éclairage, puisque l'invention permet un positionnement très précis des modules par rapport à l'élément de structure et donc des modules entre eux, ce qui est une condition impérative d'un éclairage à faisceau matériel. L'invention et les avantages qui en découlent vont être détaillée dans la description détaillée et non limitative qui va suivre, et qui sera faîte au regard des dessins annexés, parmi lesquels : The invention also relates to a motor vehicle comprising a lighting and / or signaling assembly in which the structural element is adapted to carry several modules. This assembly is particularly adapted to the implementation on the vehicle of an adaptive beam lighting and control means of the plurality of light sources associated with the lighting modules, since the invention allows a very precise positioning of the modules by relative to the structural element and therefore modules between them, which is a mandatory requirement of a light beam material. The invention and the advantages thereof will be detailed in the detailed and nonlimiting description which follows, and which will be made with reference to the appended drawings, among which:
- la figure 1 est un schéma de principe illustrant en coupe le dispositif de fixation selon l'invention d'un module d'éclairage par rapport à un élément de structure représentés tous deux partiellement ;  - Figure 1 is a block diagram illustrating in section the fixing device according to the invention of a lighting module with respect to a structural element both partially shown;
- les figures 2 et 3 illustrent en perspective, vue respectivement de devant et de derrière, un ensemble d'éclairage et/ou de signalisation dans lequel trois modules sont fixés sur un ensemble de structure au moyen notamment de dispositifs de fixation illustrés sur la figure 1  FIGS. 2 and 3 illustrate in perspective, respectively front and rear view, a lighting and / or signaling assembly in which three modules are fixed to a structure assembly by means in particular of fixing devices illustrated in FIG. 1
- la figure 4 est une vue de détail d'un des modules illustrés sur les figures 2 et 3 ;  FIG. 4 is a detailed view of one of the modules illustrated in FIGS. 2 and 3;
- la figure 5 est une vue de détail d'un des dispositifs de fixation selon l'invention associés au module illustré sur la figure 4, plus particulièrement le dispositif de fixation permettant le réglage vertical de la fixation du module par rapport à l'ensemble de structure ;  FIG. 5 is a detailed view of one of the fastening devices according to the invention associated with the module illustrated in FIG. 4, more particularly the fastening device allowing the vertical adjustment of the fastening of the module with respect to the assembly. structure;
- la figure 6 est une vue en perspective du dispositif de fixation seul, tel qu'il est illustré sur les figures 2 à 5 ;  FIG. 6 is a perspective view of the fixing device alone, as illustrated in FIGS. 2 to 5;
- et la figure 7 est un schéma de principe illustrant un deuxième mode de réalisation du dispositif de fixation selon l'invention, selon une orientation semblable à celle du schéma de principe illustré sur la figure 1 .  and FIG. 7 is a block diagram illustrating a second embodiment of the fixing device according to the invention, in an orientation similar to that of the block diagram illustrated in FIG. 1.
Tel qu'illustré sur la figure 1 , un dispositif selon l'invention permet la fixation d'un module d'éclairage 2 sur un élément de structure 4. Le dispositif de fixation comporte principalement un ensemble de visserie formé d'une vis 6 et de deux écrous 8 et 10, parmi lesquels l'un est relié au module d'éclairage et l'autre est relié à l'élément de structure. As illustrated in FIG. 1, a device according to the invention makes it possible to fix a lighting module 2 on a structural element 4. The fixing device mainly comprises a set of screws consisting of a screw 6 and two nuts 8 and 10, one of which is connected to the lighting module and the other is connected to the structural element.
Ici, les deux écrous sont empilés axialement, c'est à dire qu'ils sont disposés le long de l'axe de la vis. A cet effet, la tige de vis 12 présente le long de son axe deux parties distinctes de diamètres différents. Une partie proximale de la tige 14, disposée dans la continuité de la tête de vis 16, présente un plus grand diamètre qu'une partie distale de la tige 18 à l'extrémité libre de celle-ci. La partie proximale de la tige présente sur sa surface externe un premier filetage externe dont les filets, orientés dans un certain sens, présentent un pas déterminé. La partie distale de la tige présente sur sa surface externe un deuxième filetage externe, dont les filets présentent un pas différent de celui du premier filetage, en étant orientés dans le même sens que les filets du premier filetage. Here, the two nuts are stacked axially, that is to say they are arranged along the axis of the screw. For this purpose, the screw rod 12 has along its axis two distinct parts of different diameters. A proximal portion of the rod 14, disposed in the continuity of the screw head 16, has a larger diameter than a distal portion of the rod 18 at the free end thereof. The proximal portion of the rod has on its outer surface a first external thread whose threads, oriented in a certain direction, have a determined pitch. The distal portion of the rod has on its outer surface a second external thread, the threads have a different pitch from that of the first thread, being oriented in the same direction as the threads of the first thread.
Un premier écrou 8 est disposé autour de la partie proximale de la tige de plus grand diamètre et un second écrou 10 est disposé autour de la partie distale de plus petit diamètre de la tige. Le premier écrou présente sur la face interne d'un alésage central 20 un taraudage dont le sens et le pas des filets sont adaptés pour coopérer avec le premier filetage de la vis. De même, le second écrou présente sur la face interne d'un alésage central 22 un taraudage dont le sens et le pas des filets sont adaptés pour coopérer avec le deuxième filetage de la vis.  A first nut 8 is disposed around the proximal portion of the larger diameter shaft and a second nut 10 is disposed around the distal portion of smaller diameter of the shaft. The first nut has on the inner face of a central bore 20 a thread whose direction and the pitch of the threads are adapted to cooperate with the first thread of the screw. Similarly, the second nut has on the inner face of a central bore 22 a thread whose direction and the pitch of the threads are adapted to cooperate with the second thread of the screw.
Le premier écrou 8 est rendu solidaire de l'élément de structure 4 tandis que le second écrou 10 est rendu solidaire du module d'éclairage et/ou de signalisation 2. On décrira ci-après, lors de la description en détail d'un des différents modes de réalisation, la façon dont l'un et l'autre des écrous sont rendus solidaires de l'élément de structure et du module. De manière générale, on dispose au niveau de chacun des écrous des moyens d'arrêts axiaux et des moyens de blocage en rotation, de manière à figer la position des écrous par rapport à respectivement l'élément de structure et le module lorsque la vis tourne, de telle sorte que l'on génère un déplacement en translation de la vis relativement aux écrous, ce déplacement relatif étant transmis à l'élément de structure et au module du fait des moyens d'arrêts axiaux.  The first nut 8 is made integral with the structural element 4 while the second nut 10 is secured to the lighting and / or signaling module 2. Described below, when describing in detail a different embodiments, the way in which both nuts are made integral with the structural element and the module. In general, each nut has axial stop means and rotational locking means, so as to fix the position of the nuts with respect to the structural element and the module respectively when the screw rotates. , so that a displacement in translation of the screw relative to the nuts is generated, this relative displacement being transmitted to the structural element and to the module due to the axial stopping means.
Le principe de fonctionnement d'un tel dispositif de fixation est le suivant. On règle la position de l'élément de structure par rapport au module, en vissant la vis de serrage à l'intérieur des deux écrous respectivement solidaires en déplacement du module et de l'élément de structure. Avantageusement, la vis, du fait qu'elle présente selon l'invention deux filetages de pas légèrement différents et de même sens, permet d'obtenir un déplacement relatif de l'élément de structure par rapport à celui du module qui est plus petit, pour un tour de vis, que la valeur du pas de l'un ou l'autre des filetages.  The operating principle of such a fixing device is as follows. The position of the structural element is adjusted relative to the module, by screwing the clamping screw inside the two nuts respectively integral in displacement of the module and the structural element. Advantageously, the screw, because it presents according to the invention two threads of slightly different pitch and the same direction, allows to obtain a relative displacement of the structural element relative to that of the module which is smaller, for a turn of the screw, that the value of the pitch of one or the other of the threads.
Lorsque l'on serre la vis, celle-ci avance par rapport au premier écrou disposé autour de la partie proximale de la tige et rendu fixe par rapport à l'élément de structure par les moyens de blocage en rotation et d'arrêts axiaux. La vis avance donc par rapport à l'élément de structure et tend ainsi à se rapprocher du module, en se vissant dans le second écrou disposé autour de la partie distale de la tige. Il en résulte le déplacement du second écrou et du module solidaire vers le premier écrou et l'élément de structure. Pour un tour de vis donné, la vis 6 se déplace par rapport à l'élément de structure 4 sur une distance égale à la valeur du pas P1 du filetage externe de la partie proximale de la tige. Et dans le même temps, elle se visse dans le second écrou 10 sur une distance égale à la valeur du pas P2 du filetage externe de la partie distale de tige, de sorte que le second écrou et le module associé se déplacent en rapprochement par rapport à l'élément de structure. Il en résulte que le déplacement du module par rapport à l'élément de structure est égal à la valeur du pas du filetage de la partie proximale moins la valeur du pas du filetage de la partie distale (P1 -P2). When tightening the screw, it advances relative to the first nut disposed around the proximal portion of the rod and made fixed relative to the structural member by the rotational locking means and axial stops. The screw is advancing therefore with respect to the structural element and thus tends to approach the module, by screwing into the second nut disposed around the distal portion of the rod. This results in the displacement of the second nut and the integral module to the first nut and the structural member. For a given screw turn, the screw 6 moves relative to the structural element 4 over a distance equal to the value of the pitch P1 of the external thread of the proximal portion of the rod. And at the same time, it is screwed into the second nut 10 over a distance equal to the value of the pitch P2 of the external thread of the distal portion of the stem, so that the second nut and the associated module move closer together. to the structural element. As a result, the displacement of the module relative to the structural element is equal to the value of the pitch of the thread of the proximal portion minus the value of the pitch of the thread of the distal portion (P1-P2).
Tel qu'illustré sur les figures 2 et 3, ce type de fixation est particulièrement utile dans le cas où l'on doit placer plusieurs modules sur un même élément de structure. Dans ce type d'ensemble de signalisation et/ou d'éclairage comportant plusieurs modules les uns à côté des autres, qui est notamment appliqué dans des véhicules automobiles, il convient que la position de chacun des modules soit très précise par rapport à l'élément de structure, afin que la position des modules les uns par rapport aux autres corresponde au cahier des charges et que l'on puisse par exemple procéder à des éclairages à faisceau adaptatif. Le principe de ce type d'éclairage consiste à produire un faisceau lumineux issu d'une pluralité de sources indépendantes, du type diodes électroluminescentes. Selon les conditions de roulage et le besoin identifié d'éclairer telle ou telle partie de la route, de telle ou telle façon, chacune des sources lumineuses est commandée peut être éteinte ou allumée, et à des degrés d'intensité pouvant être variables. Afin d'obtenir un faisceau homogène et qui réponde de façon efficiente à la commande d'éclairage, chacune des sources doit éclairer très précisément la zone qui lui est impartie, et il convient pour cela que la position initiale des diodes soit la plus juste possible et qu'elle reste fiable dans le temps. Les tolérances de montage sont ainsi extrêmement faibles et l'utilisation de dispositifs de fixation selon l'invention pour l'assemblage des modules permet d'assurer des jeux de montage très faibles.  As illustrated in Figures 2 and 3, this type of attachment is particularly useful in the case where one must place several modules on the same structural element. In this type of signaling and / or lighting assembly comprising several modules next to each other, which is particularly applied in motor vehicles, the position of each of the modules should be very precise with respect to the structural element, so that the position of the modules relative to each other corresponds to the specifications and that we can for example proceed to lighting adaptive beam. The principle of this type of illumination consists in producing a light beam from a plurality of independent sources, of the light-emitting diode type. Depending on the driving conditions and the identified need to illuminate this or that part of the road, in this or that way, each of the light sources is controlled can be off or on, and in varying degrees of intensity. In order to obtain a homogeneous beam and which responds efficiently to the lighting control, each of the sources must illuminate very precisely the area assigned to it, and it is therefore necessary for the initial position of the diodes to be as fair as possible. and that it remains reliable over time. The mounting tolerances are thus extremely low and the use of fasteners according to the invention for assembling the modules makes it possible to ensure very small mounting gaps.
Chaque module est rapporté sur l'élément de structure par l'intermédiaire de trois moyens de fixation, dont deux sont des dispositifs de fixation réglables selon l'invention. Un premier moyen de fixation 24, non réglable, offre un point fixe qui sert de point de repère au réglage de la distance entre le module et l'élément de structure. Les deux dispositifs de fixation réglable 26 et 28 sont disposés au droit du point fixe, un premier 26 étant aligné verticalement par rapport à ce point fixe pour régler la position verticale de l'ensemble tandis que l'autre 28 est aligné horizontalement par rapport à ce point fixe pour régler la position horizontale de l'ensemble. Tel que cela sera décrit ci-après, les deux dispositifs de fixation réglables diffèrent à cet effet en ce que les moyens de blocage en rotation du second écrou permettent un glissement vertical ou horizontal. Each module is attached to the structural element by means of three fastening means, two of which are adjustable fastening devices according to the invention. A first non-adjustable fastening means 24 provides a fixed point which serves from a landmark to adjusting the distance between the module and the structural element. The two adjustable fixing devices 26 and 28 are arranged in line with the fixed point, a first 26 being aligned vertically with respect to this fixed point to adjust the vertical position of the assembly while the other 28 is aligned horizontally with respect to this fixed point to adjust the horizontal position of the set. As will be described hereinafter, the two adjustable fastening devices differ for this purpose in that the locking means in rotation of the second nut allow vertical or horizontal sliding.
On va maintenant décrire le dispositif de fixation selon un premier mode de réalisation. Tel que cela a pu être décrit de façon générale, le dispositif de fixation comporte principalement une vis 6 et deux écrous 8 et 10, parmi lesquels l'un est relié au module d'éclairage 2 et l'autre est relié à l'élément de structure 4. Pour l'illustration de ce premier mode de réalisation, dans lequel notamment les moyens de blocage en rotation du second écrou sont adaptés à coopérer avec des éléments portés par le module d'éclairage, on pourra se référer aux figures 2 à 6 et au schéma de principe de la figure 1 .  The fixing device according to a first embodiment will now be described. As can be generally described, the fixing device mainly comprises a screw 6 and two nuts 8 and 10, of which one is connected to the lighting module 2 and the other is connected to the element 4. For the illustration of this first embodiment, in which in particular the locking means in rotation of the second nut are adapted to cooperate with elements carried by the lighting module, we can refer to FIGS. 6 and the block diagram of Figure 1.
La vis comporte une tête hexagonale 16, pour faciliter sa préhension par les moyens de serrage automatisés sur la chaîne de montage, et une tige 12 qui s'étend axialement en présentant deux diamètres différents. Tel que cela a été décrit précédemment, la partie proximale de la tige 14 proche de la tête de vis présente un plus grand diamètre que la partie distale 18. La partie proximale présente sur sa surface externe un filetage externe, dont les filets sont orientés dans un certain sens en présentant un pas P1 . La partie distale présente également sur sa surface externe un filetage externe, dont les filets sont orientés dans le même sens que ceux du filetage de la partie proximale, mais en présentant un pas P2 différent du pas P1 . The screw comprises a hexagonal head 16, to facilitate its gripping by the automated clamping means on the assembly line, and a rod 12 which extends axially with two different diameters. As previously described, the proximal portion of the rod 14 close to the screw head has a larger diameter than the distal portion 18. The proximal portion has on its outer surface an external thread, the threads are oriented in a certain sense by presenting a step P1. The distal portion also has on its external surface an external thread, whose threads are oriented in the same direction as those of the threading of the proximal portion, but having a pitch P2 different pitch P1.
A titre d'exemple, on pourra prévoir de réaliser un filetage externe de la partie proximale avec un pas de 0.7 mm par tour, et un filetage externe de la partie distale avec un pas de 0.5 mm par tour. Pour un tour donné de vis, tel que cela a été expliqué précédemment, le module se rapproche de l'élément de structure de 0.2mm. Il est particulièrement intéressant que ce déplacement relatif soit inférieur àFor example, it will be possible to provide an external thread of the proximal portion with a pitch of 0.7 mm per revolution, and an external thread of the distal portion with a pitch of 0.5 mm per revolution. For a given turn of the screw, as explained above, the module approaches the 0.2mm structure element. It is particularly interesting that this relative displacement is less than
0.4mm, alors qu'une telle valeur est difficile à obtenir avec une vis de guidage simple sans que celle-ci ne soit trop fragile et ne présente un risque pour une tenue de la fixation dans le temps. Le premier écrou et le second écrou sont montés respectivement autour du filetage de la partie proximale et autour du filetage de la partie distale. 0.4mm, whereas such a value is difficult to obtain with a simple guide screw without it being too fragile and poses a risk for holding the fastener in time. The first nut and the second nut are respectively mounted around the thread of the proximal portion and around the thread of the distal portion.
Le premier écrou 8 présente une forme cylindrique d'axe parallèle à l'axe de la tige. Ce premier écrou est percé d'un alésage central 20 traversant, de diamètre légèrement supérieur au diamètre de la partie proximale de la tige pour pouvoir être enfilé autour de cette tige. La face interne de l'alésage comporte un taraudage dont l'orientation et le pas des filets le rendent adapté à coopérer avec le filetage externe disposé sur la surface externe de la partie proximale de la tige.  The first nut 8 has a cylindrical shape with an axis parallel to the axis of the rod. This first nut is pierced with a central through bore 20, of diameter slightly greater than the diameter of the proximal portion of the rod to be threaded around this rod. The inner face of the bore has a tapped thread whose orientation and the pitch of the threads make it adapted to cooperate with the external thread disposed on the outer surface of the proximal portion of the rod.
Le premier écrou comporte par ailleurs, sur sa surface externe, des moyens adaptés à coopérer avec l'élément de structure. Un collet 36 s'étend en saillie de la surface externe et deux ergots 38 diamétralement opposés sont disposés sur la surface externe à une distance axiale du collet sensiblement égale à l'épaisseur de l'élément de structure. On prévoit en outre un joint annulaire compressible 40, disposé dans le logement axial aménagé entre le collet et les ergots, ce joint annulaire étant adapté à être plaqué contre une paroi latérale du collet pour améliorer l'étanchéité de l'ensemble.  The first nut further comprises, on its outer surface, means adapted to cooperate with the structural element. A collar 36 extends projecting from the outer surface and two diametrically opposed lugs 38 are disposed on the outer surface at an axial distance from the collar substantially equal to the thickness of the structural element. It is further provided a compressible annular seal 40 disposed in the axial housing formed between the collar and the lugs, the annular seal being adapted to be pressed against a side wall of the collar to improve the sealing of the assembly.
Le second écrou présente une forme cylindrique d'axe parallèle à l'axe de la tige. Là aussi, le second écrou est percé d'un alésage central 22 de légèrement supérieur au diamètre de la partie distale de la tige, pour pouvoir être enfilé autour de la tige. La face interne de l'alésage comporte un taraudage dont l'orientation et le pas des filets le rendent adapté à coopérer avec le filetage externe disposé sur la surface externe de la partie distale de la tige. L'alésage central est borgne, de telle sorte que le second écrou présente une extrémité ouverte 44 pour être enfilé autour de la tige de vis, et une extrémité fermée 46.  The second nut has a cylindrical shape with an axis parallel to the axis of the rod. Again, the second nut is pierced with a central bore 22 slightly larger than the diameter of the distal portion of the rod, to be threaded around the rod. The inner face of the bore has a tapped thread whose orientation and the pitch of the threads make it adapted to cooperate with the external threading disposed on the outer surface of the distal portion of the rod. The central bore is blind, so that the second nut has an open end 44 to be threaded around the screw shaft, and a closed end 46.
Le second écrou comporte par ailleurs, sur sa surface externe, des moyens adaptés à coopérer avec le module d'éclairage. Une tête 48 est disposée à l'extrémité fermée du second écrou et des ergots 50 diamétralement opposés sont arrangés sur la surface externe de manière à s'étendre axialement le long du second écrou. La tête présente une forme sensiblement sphérique et un doigt 52 prolonge axialement la dite tête à l'opposé du second écrou.  The second nut further comprises, on its outer surface, means adapted to cooperate with the lighting module. A head 48 is disposed at the closed end of the second nut and diametrically opposed lugs 50 are arranged on the outer surface so as to extend axially along the second nut. The head has a substantially spherical shape and a finger 52 extends axially said head opposite the second nut.
Tel que cela est visible sur les figures, les ergots du second écrou sont alignés axialement sur les ergots du premier écrou, afin de permettre le montage de l'ensemble, tel que cela sera détaillé ci-après. Les figures 2 à 5 illustrent, au moins en partie, un ou plusieurs modules d'éclairage et un élément de structure adapté à supporter ces modules. As shown in the figures, the lugs of the second nut are aligned axially on the lugs of the first nut, to allow assembly of the assembly, as will be detailed below. Figures 2 to 5 illustrate, at least in part, one or more lighting modules and a structural member adapted to support these modules.
Un module d'éclairage 2 comporte un boîtier 54, fermé par une glace 56 et à l'intérieur duquel est disposée une diode électroluminescente, non visible sur les figures. A l'arrière du boîtier, des moyens de refroidissement 58 sont prévus, et différentes nervures de raidissement 60 peuvent être prévues sur ce boîtier. Pour permettre la fixation du module sur l'élément de structure, le module comporte trois platines de fixation correspondantes chacune à une zone de fixation du module. Les deux platines de fixation 62 et 64 associées aux dispositifs de fixation réglables comportent une plaque verticale 66 percée en son centre par un alésage débouchant formant une cavité adaptée à recevoir la tête sphérique du deuxième écrou, ainsi que quatre pattes 68 s'étendant en saillie de la plaque. Ces quatre pattes sont regroupées deux à deux pour former deux chemins de guidage dans la direction axiale du deuxième écrou. Pour la platine de fixation 62 associée à ladite zone de fixation verticale, visible sur les figures 4 et 5, le chemin formé entre les pattes assure le guidage d'un ergot du second écrou axialement et verticalement en empêchant un déplacement horizontal perpendiculaire à l'axe de la vis. Pour la platine de fixation 64 associée à ladite zone de fixation horizontale, visible sur la figure 2, le chemin formé entre les pattes assure le guidage d'un ergot du second écrou horizontalement en empêchant un déplacement vertical.  A lighting module 2 comprises a housing 54, closed by a window 56 and inside which is disposed a light-emitting diode, not visible in the figures. At the rear of the housing, cooling means 58 are provided, and different stiffening ribs 60 may be provided on this housing. To allow the attachment of the module on the structural element, the module comprises three fixing plates each corresponding to a fixing area of the module. The two fixing plates 62 and 64 associated with the adjustable fastening devices comprise a vertical plate 66 pierced at its center by an opening bore forming a cavity adapted to receive the spherical head of the second nut, and four lugs 68 projecting of the plate. These four legs are grouped in pairs to form two guideways in the axial direction of the second nut. For the fixing plate 62 associated with said vertical attachment zone, visible in FIGS. 4 and 5, the path formed between the lugs ensures guiding of a lug of the second nut axially and vertically by preventing a horizontal displacement perpendicular to the axis of the screw. For the fixing plate 64 associated with said horizontal fixing zone, visible in FIG. 2, the path formed between the lugs ensures the guiding of a lug of the second nut horizontally, preventing a vertical displacement.
Une rondelle à fixation rapide 70 est plaquée contre la plaque verticale des platines de fixation, à l'opposé des pattes de guidage pour enserrer, par l'intermédiaire de dents intérieures déformables, le doigt prolongeant la tête du second écrou. Lorsque celui-ci est monté dans la platine de fixation du module, le doigt dépasse au-delà de la platine de fixation et la rondelle forme des moyens d'arrêt en position axiale du second écrou.  A quick-fastening washer 70 is pressed against the vertical plate of the fixing plates, opposite the guide tabs to grip, through deformable inner teeth, the finger extending the head of the second nut. When it is mounted in the mounting plate of the module, the finger protrudes beyond the fixing plate and the washer forms stop means in axial position of the second nut.
L'élément de structure prend la forme d'une plaque tridimensionnelle 72 comportant des évidements 74 pour permettre le passage de moyens de refroidissement des modules. La plaque présente une face avant 78 tournée vers les modules d'éclairage et/ou de signalisation lorsque l'ensemble est monté, et une face arrière opposée 80. Autour des évidements, l'élément de structure présente pour chaque module un plot fixe 81 qui s'étend en saillie axiale et dont l'extrémité libre porte une tête sphérique sensiblement équivalente à la tête formée en bout du second écrou du dispositif de fixation réglable. Ce plot fixe est adapté à être enfoncé dans la platine de fixation du module correspondante à la zone de fixation fixe. The structural element takes the form of a three-dimensional plate 72 having recesses 74 to allow the passage of cooling means modules. The plate has a front face 78 facing the lighting modules and / or signaling when the assembly is mounted, and an opposite rear face 80. Around the recesses, the structural element has for each module a fixed stud 81 which extends in axial projection and whose free end carries a spherical head substantially equivalent to the head formed at the end of the second nut of the adjustable fastening device. This fixed stud is adapted to be pressed into the mounting plate of the module corresponding to the fixed fixing area.
La plaque formant l'élément de structure comporte en outre pour chaque module des alésages circulaires 82 adaptés à être traversés par les dispositifs de fixation réglables, et autour desquels des moyens formant rampe de guidage et de verrouillage 84 sont prévus pour la solidarisation du premier écrou par rapport à l'élément de structure dans une fixation de type à baïonnette. Le diamètre des alésages est sensiblement égal aux diamètres externes des écrous, en étant inférieur au diamètre du collet s'étendant en saillie du premier écrou, de manière à d'une part laisser passage à la vis et au second écrou, et d'autre part former une butée au collet du premier écrou pour arrêter axialement l'insertion de la vis. Les moyens formant rampe s'étendent en saillie de la face avant 78 et ils comportent deux chemins de rampe 86 diamétralement opposés. Chaque chemin de rampe présente un plan incliné qui suit le pourtour du bord délimitant l'alésage, et un logement 88 est formé en bout du chemin de rampe pour recevoir un ergot. De façon symétrique, des découpes sont réalisées dans la paroi délimitant le bord de l'alésage à l'entrée des chemins de rampe, de manière à former des dégagements 90 pour le passage des ergots des écrous. De fait, l'alésage, les moyens formant rampe et les dégagements forment un ensemble adapté à une insertion du dispositif de fixation en " pousser-tourner " spécifique à une fixation de type baïonnette. L'écrou ne peut tourner que dans un sens, vers l'entrée d'un chemin de rampe, puisque la rotation dans le sens inverse est bloquée par la présence d'une paroi d'extrémité 92 de l'autre chemin de rampe, formant un épaulement suite aux découpes symétriques de la paroi.  The plate forming the structural element further comprises, for each module, circular bores 82 adapted to be traversed by the adjustable fastening devices, and around which means forming a guide and locking ramp 84 are provided for the fastening of the first nut. relative to the structural element in a bayonet-type fastener. The diameter of the bores is substantially equal to the external diameters of the nuts, being less than the diameter of the flange extending projecting from the first nut, so as firstly to allow passage to the screw and the second nut, and other part forming a stop at the collar of the first nut to stop axially insertion of the screw. The ramp means extend projecting from the front face 78 and have two diametrically opposed ramp paths 86. Each ramp path has an inclined plane which follows the periphery of the edge delimiting the bore, and a housing 88 is formed at the end of the ramp path to receive a lug. In a symmetrical manner, cutouts are made in the wall delimiting the edge of the bore at the entrance of the ramp paths, so as to form clearances 90 for the passage of the lugs of the nuts. In fact, the bore, the ramp means and the recesses form an assembly adapted to an insertion of the "push-turn" fastening device specific to a bayonet-type fastener. The nut can only rotate in one direction, towards the entrance of a ramp path, since the rotation in the opposite direction is blocked by the presence of an end wall 92 of the other ramp path, forming a shoulder following the symmetrical cuts of the wall.
On va maintenant décrire le montage de l'ensemble formé par l'élément de structure, le module d'éclairage et/ou de signalisation et les dispositifs de fixation.  The assembly of the assembly formed by the structural element, the lighting and / or signaling module and the fixing devices will now be described.
On assemble dans un premier temps le dispositif de fixation en montant les écrous 8 et 10 sur la vis 6, en faisant correspondre le bon écrou à la partie correspondante de la tige. Les écrous sont enfilés par la partie distale 18, en commençant par le premier écrou 8. Son diamètre interne sensiblement égal au diamètre de la partie proximale 14 permet son déplacement le long de la partie distale de moindre diamètre sans abîmer les filets. Le premier écrou est alors vissé sur le filetage externe de la partie proximale. On monte ensuite le second écrou 10 en le vissant sur le filetage externe de la partie distale, et on s'assure que les ergots 38 et 50 des deux écrous soient bien alignés axialement. The fastener is first assembled by mounting the nuts 8 and 10 on the screw 6, matching the right nut to the corresponding part of the rod. The nuts are threaded through the distal portion 18, starting with the first nut 8. Its inner diameter substantially equal to the diameter of the proximal portion 14 allows its displacement along the distal portion of smaller diameter without damaging the threads. The first nut is then screwed onto the external thread of the proximal portion. Then mount the second nut 10 by screwing it on the external thread of the distal portion, and it is ensured that the lugs 38 and 50 of the two nuts are aligned axially.
On assemble dans un deuxième temps le dispositif de fixation avec l'élément de structure 4 par l'intermédiaire du premier écrou. Pour cela, on fait traverser le dispositif de fixation à travers l'alésage 82 de l'élément de structure, depuis l'arrière de l'élément de structure, en faisant passer tout d'abord le deuxième écrou. Les ergots du second écrou 50 passent à travers l'élément de structure grâce aux dégagements 88 latéraux formés sur le bord délimitant l'alésage. On continue l'insertion du dispositif de fixation jusqu'à se trouver en butée par contact du collet 36 et du joint d'étanchéité 40 contre la face arrière 80 de l'élément de structure. Les ergots du premier écrou 38 sont alors passés de l'autre côté de l'élément de structure, en étant eux aussi passés par l'alésage grâce aux mêmes dégagements latéraux, les ergots du premier écrou et ceux du second écrou étant alignés. On fait alors tourner le premier écrou, de telle sorte que les ergots du premier écrou 38 montent sur les rampes 86. La rotation du premier écrou, sensiblement d'un quart de tour, est arrêtée lorsque les ergots prennent place dans le logement 90 aménagé dans le chemin de rampe. Dans ce logement, l'ergot n'est plus plaqué contre la face avant 76 de l'élément de structure ce qui génère le rapprochement du collet de la face arrière et la compression du joint d'étanchéité entre l'élément de structure et le collet. Le collet et les ergots du premier écrou forment des moyens d'arrêts axiaux en emprisonnant axialement l'élément de structure, tandis que les logements disposés sur le chemin de rampe et les ergots du premier écrou forment des moyens de blocage en rotation. Ces moyens de blocage permettent de transformer le mouvement de rotation de la vis en un mouvement de translation du premier écrou et les moyens d'arrêts axiaux permettent de rendre solidaires le premier écrou et l'élément de structure en déplacement axial lorsque le premier écrou se déplace en translation sous l'effet de la rotation de la vis.  In a second step, the fixing device is assembled with the structural element 4 by means of the first nut. For this purpose, the fastener is passed through the bore 82 of the structural member from the rear of the structural member, first passing the second nut. The lugs of the second nut 50 pass through the structural element through the lateral clearances 88 formed on the edge delimiting the bore. The insertion of the fixing device is continued until it is in abutment by contact of the collar 36 and the seal 40 against the rear face 80 of the structural element. The lugs of the first nut 38 are then passed to the other side of the structural element, having also passed through the bore through the same lateral recesses, the lugs of the first nut and those of the second nut being aligned. The first nut is then rotated, so that the lugs of the first nut 38 mount on the ramps 86. The rotation of the first nut, substantially a quarter turn, is stopped when the lugs take place in the housing 90 arranged in the ramp path. In this housing, the lug is no longer pressed against the front face 76 of the structural element which generates the approximation of the collar of the rear face and the compression of the seal between the structural element and the collar. The collar and the lugs of the first nut form axial stop means by axially trapping the structural element, while the housings arranged on the ramp path and the lugs of the first nut form locking means in rotation. These locking means make it possible to transform the rotational movement of the screw into a translation movement of the first nut and the axial stop means make it possible to make the first nut and the structural element integral in axial displacement when the first nut moves in translation under the effect of the rotation of the screw.
Une fois ce premier écrou bloqué en position par rapport à l'élément de structure, on rapporte sur le module 2 l'ensemble formé par l'élément de structure et par le dispositif de fixation, en fixant le second écrou sur ce module.  Once this first nut locked in position relative to the structural element, is reported on the module 2 the assembly formed by the structural member and the fixing device, fixing the second nut on this module.
Au préalable on relie à force le module et l'élément de structure en faisant coopérer la tête sphérique du plot fixe 81 avec la platine de fixation correspondante. On procède ensuite à la liaison des dispositifs de fixation réglables et du module. Pour ce faire, on enclipse la tête sphérique 48 du second écrou dans la platine de fixation 62, 64 correspondante du module, en guidant axialement cette tête par la coopération des ergots du second écrou avec les deux glissières en regard formées entre les pattes 68 de la platine de fixation du module. On solidarise l'ensemble par l'intermédiaire d'un moyen d'attache rapide 70, du type rondelle déformable, rapporté sur la face de la platine de fixation du module de laquelle dépasse le doigt prolongeant axialement la tête sphérique du second écrou. Beforehand, the module and the structural element are connected by force by making the spherical head of the fixed stud 81 cooperate with the corresponding fixing plate. The adjustable fasteners and the module are then connected. To do this, the spherical head 48 of the second nut is clipped into the platen of corresponding attachment 62, 64 of the module, by guiding axially this head by the cooperation of the lugs of the second nut with the two facing rails formed between the tabs 68 of the mounting plate of the module. The assembly is secured by means of a quick coupling means 70, of the deformable washer type, attached to the face of the mounting plate of the module from which the finger extends axially extending the spherical head of the second nut.
On peut alors procéder au réglage de l'avancement du module par rapport à l'élément de structure, en tournant la vis pour créer deux déplacements axiaux des deux écrous par rapport à la vis, ce qui génère un déplacement relatif du module par rapport à l'élément de structure qui est égal à la différence entre les pas des filetages externes distincts portés la vis, tel que cela a été précisé plus haut.  It is then possible to adjust the progress of the module relative to the structural element, by turning the screw to create two axial displacements of the two nuts relative to the screw, which generates a relative movement of the module relative to the structural element which is equal to the difference between the pitches of the separate external threads carried the screw, as has been specified above.
Dans le cas d'une application à un véhicule automobile, on fixe alors l'ensemble sur la carrosserie du véhicule par vissage au niveau de douilles de fixation 94 portés par l'élément de structure.  In the case of an application to a motor vehicle, the assembly is then fixed on the body of the vehicle by screwing at the mounting bushings 94 carried by the structural element.
A la lecture de ce qui précède, on constate aisément que l'invention atteint bien les buts qu'elle s'est fixés, et notamment de proposer des moyens de fixation permettant un montage facile de l'ensemble d'éclairage et/ou de signalisation, et avec une précision accrue par le réglage du déplacement relatif du module et de l'élément de structure, ce déplacement relatif pouvant facilement être inférieur à 0.4 mm par tour de vis.  On reading the foregoing, it is easy to see that the invention achieves the goals it has set for itself, and in particular to propose fastening means for easy mounting of the lighting assembly and / or signaling, and with increased accuracy by adjusting the relative displacement of the module and the structural element, this relative displacement can easily be less than 0.4 mm per turn of the screw.
Par ailleurs le dispositif de fixation selon l'invention permet une grande précision tout en privilégiant l'utilisation d'une vis de réglage aux diamètres standards, ce qui permet d'assurer une stabilité du réglage dans le temps, la vis n'étant pas choisie trop petite et donc trop fragile.  Moreover, the fixing device according to the invention allows a high precision while favoring the use of an adjustment screw with standard diameters, which makes it possible to ensure stability of the adjustment over time, the screw not being chosen too small and therefore too fragile.
On comprend que ces buts sont également atteints dans des variantes de réalisation qui ne sortent pas du contexte de l'invention, et notamment dans le dispositif de fixation selon un deuxième mode de réalisation que l'on va décrire maintenant, en se référant au schéma de principe illustré sur la figure 7. On emploie pour les éléments semblables les mêmes références numériques que pour le dispositif de fixation 1 , auxquelles on a ajouté 100.  It is understood that these objects are also achieved in alternative embodiments that do not go beyond the context of the invention, and in particular in the fixing device according to a second embodiment that will be described now, with reference to the diagram. of principle shown in Figure 7. We use for similar elements the same reference numerals as for the attachment device 1, which was added 100.
Le dispositif de fixation 101 est globalement semblable au dispositif 1 si ce n'est que les moyens de blocage en rotation du second écrou sont portés par le premier écrou 108, et non pas par le module d'éclairage et/ou de signalisation 102. Il en résulte une forme différente du premier écrou et de la platine de fixation portée par le module. Le premier écrou est prolongé axialement de manière à recouvrir le second écrou, et il comporte une rainure interne adaptée à loger l'ergot solidaire du second écrou. Le montage des écrous sur la vis se fait dans une position extrême d'assemblage des écrous entre eux. Soit les écrous sont écartés au maximum pour être enfilés ensemble sur la vis par la partie distale, et l'on visse d'abord le premier écrou sur le filetage externe de la partie proximale, soit les écrous sont regroupés au maximum, c'est à dire que le second écrou est rentré au maximum dans le premier écrou, pour être enfilés ensemble sur la vis par la partie distale et l'on visse d'abord le second écrou sur la partie distale. The fixing device 101 is generally similar to the device 1 except that the means for locking in rotation of the second nut are carried by the first nut 108, and not by the lighting and / or signaling module 102. This results in a different shape of the first nut and the mounting plate carried by the module. The first nut is extended axially so as to cover the second nut, and it has an internal groove adapted to accommodate the integral lug of the second nut. The mounting of the nuts on the screw is in an extreme position of assembly of the nuts between them. Either the nuts are spaced as far as possible to be threaded together on the screw by the distal portion, and the first nut is first screwed onto the external thread of the proximal portion, or the nuts are grouped together to the maximum; that is to say that the second nut is retracted to the maximum in the first nut, to be threaded together on the screw by the distal portion and first screws the second nut on the distal portion.
De fait, la platine de fixation ne présente pas de pattes de fixation en saillie adaptées à guider axialement les ergots du second écrou.  In fact, the mounting plate does not have projecting lugs adapted to axially guide the lugs of the second nut.
Toutefois, l'assemblage du dispositif de fixation est sensiblement le même, ainsi que le montage de celui-ci avec le module 102 et l'élément de structure 104, et le fonctionnement pour le réglage fin de la position du module par rapport à l'élément de structure est le même que précédemment.  However, the assembly of the fixing device is substantially the same, as is the mounting thereof with the module 102 and the structural element 104, and the operation for the fine adjustment of the position of the module relative to the structure element is the same as before.

Claims

REVENDICATIONS
1. Dispositif de fixation d'un module d'éclairage et/ou de signalisation (2) sur un élément de structure (4), comportant un ensemble de visserie adapté à régler l'orientation du module par rapport à l'élément de structure, caractérisé en ce que l'ensemble de visserie comporte une vis (6) adaptée à coopérer avec deux écrous (8,10) par l'intermédiaire de deux filetages distincts, un premier écrou (8) étant rendu solidaire de l'élément de structure (4) et un second écrou étant rendu solidaire du module (2), les filetages distincts présentant des filets spécifiques en ce qu'il sont tous orientés dans le même sens et en ce que les filets d'un premier filetage sont espacés d'un pas différent de celui avec lequel sont espacés les filets du second filetage. 1. Device for fixing a lighting and/or signaling module (2) to a structural element (4), comprising a set of screws adapted to adjust the orientation of the module relative to the structural element , characterized in that the screw assembly comprises a screw (6) adapted to cooperate with two nuts (8,10) via two distinct threads, a first nut (8) being made integral with the element of structure (4) and a second nut being made integral with the module (2), the distinct threads having specific threads in that they are all oriented in the same direction and in that the threads of a first thread are spaced apart a pitch different from that with which the threads of the second thread are spaced.
2. Dispositif de fixation selon la revendication 1 , caractérisé en ce que la différence entre les pas des filets des deux filetages est inférieure à 0.4 mm par tour. 2. Fastening device according to claim 1, characterized in that the difference between the thread pitches of the two threads is less than 0.4 mm per revolution.
3. Dispositif de fixation selon la revendication 1 ou 2, caractérisé en ce que les deux écrous (8, 10) sont disposés en empilage axial de sorte que la vis (6) porte les deux filetages. 3. Fastening device according to claim 1 or 2, characterized in that the two nuts (8, 10) are arranged in axial stacking so that the screw (6) carries the two threads.
4. Dispositif de fixation selon la revendication 3, caractérisé en ce que la vis (6) comporte une tige (12) présentant deux parties (14, 18) avec des diamètres différents, chacune des parties présentant sur sa surface externe un desdits filetages. 4. Fastening device according to claim 3, characterized in that the screw (6) comprises a rod (12) having two parts (14, 18) with different diameters, each of the parts having on its external surface one of said threads.
5. Dispositif de fixation selon la revendication 3 ou 4, caractérisé en ce que les deux écrous sont agencés autour de la tige de vis (12) sans que les deux écrous soient en contact. 5. Fastening device according to claim 3 or 4, characterized in that the two nuts are arranged around the screw rod (12) without the two nuts being in contact.
6. Dispositif de fixation selon l'une des revendications 1 à 5, caractérisé en ce que le premier écrou (8) est percé d'un alésage traversant tandis que le deuxième écrou (10) présente un trou borgne. 6. Fastening device according to one of claims 1 to 5, characterized in that the first nut (8) is pierced with a through bore while the second nut (10) has a blind hole.
7. Dispositif de fixation selon l'une des revendications 1 à 6, caractérisé en ce que le premier écrou (8) comporte un collet (36), qui s'étend en saillie de la surface externe du premier écrou, ainsi qu'au moins un ergot (38), notamment deux ergots diamétralement opposés, qui est disposé sur ladite surface externe à une distance axiale du collet sensiblement égale à l'épaisseur de l'élément de structure (4). 7. Fastening device according to one of claims 1 to 6, characterized in that the first nut (8) comprises a collar (36), which extends projecting from the surface external surface of the first nut, as well as at least one lug (38), in particular two diametrically opposed lugs, which is arranged on said external surface at an axial distance from the collar substantially equal to the thickness of the structural element (4) .
8. Dispositif de fixation selon l'une des revendications 1 à 7, caractérisé en ce que le second écrou (10) comporte une tête sphérique (48) disposée à l'extrémité fermée du second écrou (46) ainsi qu'au moins un ergot (50), notamment deux ergots (50) diamétralement opposés, qui est arrangé sur la surface externe du second écrou de manière à s'étendre axialement le long de celui-ci. 8. Fastening device according to one of claims 1 to 7, characterized in that the second nut (10) comprises a spherical head (48) disposed at the closed end of the second nut (46) as well as at least one lug (50), in particular two diametrically opposed lugs (50), which is arranged on the external surface of the second nut so as to extend axially along it.
9. Dispositif de fixation selon la revendication 8, caractérisé en ce que la tête (48) présente une forme sensiblement sphérique qu'un doigt (52) prolonge axialement à l'opposé du second écrou. 9. Fastening device according to claim 8, characterized in that the head (48) has a substantially spherical shape that a finger (52) extends axially opposite the second nut.
10. Dispositif de fixation selon les revendications 7 et 9, caractérisé en ce que les ergots du second écrou (50) sont alignés avec les ergots du premier écrou (38) lorsque les écrous sont disposés sur la tige de vis (12). 10. Fastening device according to claims 7 and 9, characterized in that the lugs of the second nut (50) are aligned with the lugs of the first nut (38) when the nuts are arranged on the screw rod (12).
11. Dispositif de fixation selon la revendication 3 ou 4, caractérisé en ce que les deux écrous sont agencés autour de la tige de vis et en ce que le premier écrou est prolongé axialement pour recouvrir le second écrou, de telle sorte que le premier écrou porte des moyens de blocage en rotation du second écrou. 11. Fastening device according to claim 3 or 4, characterized in that the two nuts are arranged around the screw rod and in that the first nut is extended axially to cover the second nut, such that the first nut carries means for blocking the rotation of the second nut.
12. Ensemble d'éclairage et/ou de signalisation comportant un module d'éclairage et/ou de signalisation (2), un élément de structure (4) et un dispositif de fixation du module sur l'élément de structure selon l'une des revendications 1 à 1 1 . 12. Lighting and/or signaling assembly comprising a lighting and/or signaling module (2), a structural element (4) and a device for fixing the module to the structural element according to one of claims 1 to 1 1.
13. Ensemble d'éclairage et/ou de signalisation selon la revendication 12, caractérisé en ce que le premier écrou (8) et/ou l'élément de structure (4) portent des moyens complémentaires pour l'arrêt en translation et le blocage en rotation de l'un par rapport à l'autre, tandis que le deuxième écrou (10) et/ou le module (2) porte des moyens complémentaires pour l'arrêt en translation et le blocage en rotation de l'un par rapport à l'autre. 13. Lighting and/or signaling assembly according to claim 12, characterized in that the first nut (8) and/or the structural element (4) carry complementary means for stopping in translation and blocking in rotation of one relative to the other, while the second nut (10) and/or the module (2) carries complementary means for stopping in translation and blocking in rotation of one relative to to the other.
14. Ensemble d'éclairage et/ou de signalisation selon la revendication 13, caractérisé en ce que le premier écrou (8) comporte un collet (36), qui s'étend en saillie de la surface externe du premier écrou, ainsi qu'au moins un ergot (38), notamment deux ergots diamétralement opposés, qui est disposé sur ladite surface externe à une distance axiale du collet sensiblement égale à l'épaisseur de l'élément de structure (4). 14. Lighting and/or signaling assembly according to claim 13, characterized in that the first nut (8) comprises a collar (36), which extends projecting from the external surface of the first nut, as well as at least one lug (38), in particular two diametrically opposed lugs, which is arranged on said external surface at an axial distance from the collar substantially equal to the thickness of the structural element (4 ).
5 15. Ensemble d'éclairage et/ou de signalisation selon la revendication 14, caractérisé en ce qu'un joint annulaire compressible (40) est disposé axialement entre le collet (36) et les ergots (38), ledit joint annulaire étant notamment adapté à être plaqué contre une paroi latérale du collet. 5 15. Lighting and/or signaling assembly according to claim 14, characterized in that a compressible annular seal (40) is arranged axially between the collar (36) and the lugs (38), said annular seal being in particular adapted to be pressed against a side wall of the collar.
16. Ensemble d'éclairage et/ou de signalisation selon l'une des revendications 13 à0 15, caractérisé en ce que l'élément de structure comporte des alésages circulaires (82) adaptés à être traversés par les dispositifs de fixation réglables, et autour desquels des moyens formant rampe de guidage et de verrouillage (84) sont prévus pour la solidarisation du premier écrou par rapport à l'élément de structure, notamment dans une fixation de type à baïonnette. 516. Lighting and/or signaling assembly according to one of claims 13 to 15, characterized in that the structural element comprises circular bores (82) adapted to be crossed by the adjustable fixing devices, and around of which means forming a guide and locking ramp (84) are provided for securing the first nut relative to the structural element, in particular in a bayonet type fixing. 5
17. Ensemble d'éclairage et/ou de signalisation selon la revendication 16, caractérisé en ce que les moyens formant rampe de guidage et de verrouillage (84), qui s'étendent en saillie de l'élément de structure (4), comportent deux chemins de rampe (86) diamétralement opposés et présentant chacune une forme de plan incliné dans lequel un logement (88) est formé pour recevoir un ergot, lesdits o chemins de rampe étant séparés de façon symétrique par des découpes réalisées dans la paroi délimitant le bord de l'alésage à l'entrée des chemins de rampe de manière à former des dégagements (90) pour le passage des ergots des écrous. 17. Lighting and/or signaling assembly according to claim 16, characterized in that the means forming a guide and locking ramp (84), which extend projecting from the structural element (4), comprise two diametrically opposed ramp paths (86) and each having the shape of an inclined plane in which a housing (88) is formed to receive a lug, said o ramp paths being separated symmetrically by cutouts made in the wall delimiting the edge of the bore at the entrance to the ramp paths so as to form clearances (90) for the passage of the lugs of the nuts.
18. Ensemble d'éclairage et/ou de signalisation selon la revendication 13, caractérisé en ce que le second écrou (10) comporte une tête sphérique (48) disposée à 5 l'extrémité fermée du second écrou (46) ainsi qu'au moins un ergot (50), notamment deux ergots (50) diamétralement opposés, qui est arrangé sur la surface externe du second écrou de manière à s'étendre axialement le long de celui-ci. 18. Lighting and/or signaling assembly according to claim 13, characterized in that the second nut (10) comprises a spherical head (48) disposed at the closed end of the second nut (46) as well as at the least one lug (50), in particular two diametrically opposed lugs (50), which is arranged on the external surface of the second nut so as to extend axially along it.
19. Ensemble d'éclairage et/ou de signalisation selon la revendication 18, caractérisé en ce que la tête (48) présente une forme sensiblement sphérique qu'un doigt (52) prolonge axialement à l'opposé du second écrou. 19. Lighting and/or signaling assembly according to claim 18, characterized in that the head (48) has a substantially spherical shape that a finger (52) extends axially opposite the second nut.
20. Ensemble d'éclairage et/ou de signalisation selon les revendications 14 et 18, caractérisé en ce que les ergots du second écrou (50) sont alignés avec les ergots du premier écrou (38) lorsque les écrous sont disposés sur la tige de vis (12). 20. Lighting and/or signaling assembly according to claims 14 and 18, characterized in that the lugs of the second nut (50) are aligned with the lugs of the first nut (38) when the nuts are arranged on the rod. screw (12).
21. Ensemble d'éclairage et/ou de signalisation selon la revendication 18, caractérisé en ce que le module comporte des platines de fixation (62, 64) formées d'une plaque verticale (66) percée en son centre par un alésage débouchant formant une cavité adaptée à recevoir la tête sphérique du second écrou (48), ainsi que de quatre pattes (68) s'étendant en saillie de la plaque, les dites quatre pattes étant regroupées deux à deux pour former deux chemins de guidage pour les ergots du second écrou (50), dans la direction axiale de ce dernier. 21. Lighting and/or signaling assembly according to claim 18, characterized in that the module comprises fixing plates (62, 64) formed of a vertical plate (66) pierced in its center by an through bore forming a cavity adapted to receive the spherical head of the second nut (48), as well as four tabs (68) extending projecting from the plate, said four tabs being grouped two by two to form two guide paths for the lugs of the second nut (50), in the axial direction of the latter.
22. Ensemble d'éclairage et/ou de signalisation selon la revendication 12, dans lequel le module et l'élément de structure sont assemblés par trois zones de fixation parmi lesquelles une zone de fixation à force formant un point de repère pour le réglage du rapprochement du module et de l'élément de structure par deux dispositifs de fixation réglable selon l'une des revendications 1 à 1 1 , l'un étant utilisé pour un réglage horizontal quand l'autre est utilisé pour un réglage vertical. 22. Lighting and/or signaling assembly according to claim 12, in which the module and the structural element are assembled by three fixing zones including a force fixing zone forming a reference point for adjusting the bringing together the module and the structural element by two adjustable fixing devices according to one of claims 1 to 1 1, one being used for horizontal adjustment when the other is used for vertical adjustment.
23. Ensemble d'éclairage et/ou de signalisation selon les revendications 20 et 22, dans lequel une platine de fixation (62) est associée au dispositif de fixation réglable pour le réglage vertical de sorte que le chemin formé entre les pattes (68) assure le guidage d'un ergot du second écrou (50) axialement et verticalement en empêchant un déplacement horizontal perpendiculaire à l'axe de la vis et dans lequel une platine de fixation (64) est associée au dispositif de fixation réglable pour le réglage horizontal de sorte que le chemin formé entre les pattes assure le guidage d'un ergot du second écrou horizontalement en empêchant un déplacement vertical. 23. Lighting and/or signaling assembly according to claims 20 and 22, in which a fixing plate (62) is associated with the adjustable fixing device for vertical adjustment so that the path formed between the tabs (68) ensures the guiding of a lug of the second nut (50) axially and vertically by preventing horizontal movement perpendicular to the axis of the screw and in which a fixing plate (64) is associated with the adjustable fixing device for horizontal adjustment so that the path formed between the legs ensures the guiding of a lug of the second nut horizontally while preventing vertical movement.
24. Ensemble d'éclairage et/ou de signalisation selon l'une des revendications précédentes, caractérisé en ce que l'élément de structure est adapté à porter plusieurs modules. 24. Lighting and/or signaling assembly according to one of the preceding claims, characterized in that the structural element is adapted to carry several modules.
25. Véhicule automobile comportant un ensemble d'éclairage et/ou de signalisation selon la revendication 24, ainsi que des moyens de commande d'un éclairage à faisceau adaptatif. 25. Motor vehicle comprising a lighting and/or signaling assembly according to claim 24, as well as means for controlling adaptive beam lighting.
EP14744333.7A 2013-08-02 2014-07-28 Device for fastening a lighting and/or signalling module on a structural element Withdrawn EP3027466A1 (en)

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FR1357699A FR3010690B1 (en) 2013-08-02 2013-08-02 DEVICE FOR FIXING A LIGHTING AND / OR SIGNALING MODULE ON A STRUCTURAL ELEMENT
PCT/EP2014/066151 WO2015014780A1 (en) 2013-08-02 2014-07-28 Device for fastening a lighting and/or signalling module on a structural element

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FR3010690A1 (en) 2015-03-20
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US20160167564A1 (en) 2016-06-16
CN105531150A (en) 2016-04-27
WO2015014780A1 (en) 2015-02-05

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