FR2852285A1 - Taillight and bumper assembling method for vehicle, involves fixing taillight support on body structure to position taillight based on body structure, and presenting bumper on support in assembly position adjacent to taillight - Google Patents

Abstract

The method involves fixing a taillight (3) on a body structure (2) of a vehicle by utilizing a fixing unit (8). A taillight support (10) is fixed on the body structure of the vehicle by utilizing fixing units (10b, 10b), such that the support positions the taillight with respect to the body structure. A bumper is presented on the taillight support in an assembly position, which is adjacent to the taillight. An independent claim is also included for an assembly set of a bumper.

Description

The invention relates to a method for mounting a bumper and

  at least one lighting device for a motor vehicle in a position adjacent to the bumper.

  When mounting a motor vehicle bumper 5 and in particular a rear bumper in an adjacent position relative to vehicle lighting devices such as rear lights, it is necessary to set up and fix the bumper in such a way as to obtain a correct flush between the bumper and the rear lights and / or a perfectly defined and constant mounting clearance along the adjacent edges of the bumper and rear lights.

  When mounting the motor vehicle, first of all the mounting of the two rear lights on the body of the motor vehicle then the mounting of the bumper.

  The wall or skin of the bumper which covers a rear part of the bodywork of the motor vehicle, in a position adjacent to the rear lights, is a hyperstatic part but of a certain flexibility, the position of which on the motor vehicle is defined at the time mounting the bumper, without possibility of adjustment. In addition, it is not possible to have positioning or fixing means on the vehicle body making it possible to ensure a perfect position of the bumper relative to the rear lights. We must therefore provide a mounting clearance which may be incompatible with the aesthetics of the motor vehicle.

  In addition, the bumper must not be integral with the rear lights, in order to avoid transmitting forces liable to break the rear lights 25 in the event of impacts sustained in the rear part of the motor vehicle. It is therefore not possible to mount a pre-assembled assembly comprising the bumper and the rear lights.

  Finally, it is necessary to provide removable rear lights, for example to replace the bulbs of these rear lights.

  The object of the invention is therefore to propose a method of mounting on the bodywork of a motor vehicle, at least one lighting device and a bumper having at least one edge whose mounting position is adjacent to the lighting device, this method allowing a perfect positioning of the bumper relative to the lighting device while avoiding securing the bumper and the lighting device.

  To this end: - the lighting device and a device support are assembled, - the assembly device fixed to the device support is fixed to the body of the motor vehicle by means of at least a fixing element ensuring a precise positioning of the lighting device on the body, - the device support is fixed to the body by means of fixing means cooperating on the body and the device support allowing adaptation of the position of the device support relative to the body, - the bumper is presented in a mounting position adjacent to the lighting device, and - the bumper is fixed on the lighting device support.

  The method of the invention can be implemented for example according to at least one of the following methods: - assembly of the lighting device and of the device support is carried out by means of integral cooperating clipping means , respectively, of an internal part of the lighting device directed towards the interior of the motor vehicle, and of an upper support surface of the device support, by moving the device d relative to the other. lighting and the device support, in an assembly direction; - Fixing the lighting device on the body of the motor vehicle by means of a barrel integral with the lighting device placed in the axial extension of a threaded barrel projecting from the body of the motor vehicle and engaging a fixing means such as a screw in the barrel of the lighting device and in the barrel projecting from the body 30 of the motor vehicle; - the device support is fixed to the bodywork of the motor vehicle by means of openings passing through wall parts of the device support, by engagement of the openings of the device support on studs projecting from the bodywork of the vehicle automobile and screwing of fixing nuts on the studs, the openings having shapes or dimensions making it possible to adjust the position of the support relative to the body of the motor vehicle, at least in a horizontal transverse direction of the motor vehicle and in a vertical direction; and a gap is formed between a lower edge of the lighting device and an upper bearing surface of the support to ensure the engagement of an upper edge of the bumper in the gap and of an opening 10 passing through the edge of the bumper on a mounting finger projecting from the upper support surface of the support.

  The invention also relates to an assembly for mounting a bumper on the body of a motor vehicle in a position adjacent to at least one lighting device, characterized in that it comprises: - a support lighting device comprising fixing means intended to cooperate with corresponding means of the lighting device to ensure a removable rigid fixing of the lighting device on the lighting device support and engagement means 20 with games mounting on means for fixing the bodywork of the motor vehicle, - at least one means for fixing the lighting device intended to be placed, in a precise assembly position of the lighting device, in correspondence with a means of corresponding fixing provided on the bodywork of the motor vehicle, and - at least one means of fixing the bumper on the lighting device support.

  In order to clearly understand the invention, a description will be given, by way of example, with reference to the attached figures, of a rear part 30 of a motor vehicle comprising a bumper and rear lights and the mounting of the rear lights and bumper by the method of the invention.

  Figure i is a partial view of the rear part of the vehicle, from outside the vehicle.

  Figure 2 is a partial perspective view of the rear part of the motor vehicle, from inside the motor vehicle.

  Figure 3 is a sectional view along 3-3 of Figure 2.

  Figure 4 is a view along 4-4 of Figure 2.

  Figures 5, 6, 7 and 8 show successive steps of mounting a rear light and its support on the motor vehicle.

  Figure 9 is a perspective view of the rear of the motor vehicle showing a mounting phase of the bumper.

  FIGS. 10A, 10B and 10C are detailed views showing means of fixing a rear light during three successive phases of dismantling the rear light.

  In FIG. 1, a rear part of a motor vehicle is seen comprising a bodywork 2 on which are fixed rear lights 3 and a bumper 4 covering a part of the bodywork 2 and comprising an upper edge 4a adjacent to a lower edge 3a of the rear light 3.

  In Figure 2, there is shown a side end of the rear part 1 of the motor vehicle, viewed from inside the vehicle, in the direction from front to rear.

  The lateral end of the rear part 1 of the vehicle comprises in particular a lateral end of the bumper 4 and the rear light 3 disposed above a substantially horizontal rim 4a of the bumper 4 back towards the interior.

  The rear light 3 comprises a plastic body having an external wall 3b of curved shape constituting the visible face of the rear light situated in the extension of the body 2 and of the skin of the bumper 4, as it is visible in particular on the figure 1.

  The rear light housing 3 comprises, on the rear light side directed towards the interior of the motor vehicle, a bulb support 5 and support and fixing elements 6 and 7 intended to cooperate with corresponding fixing elements d a rear light support 10 which can be fixed to the body of the motor vehicle, to secure the rear light 3 and the rear light support 10.

  On the face of the rear light housing 3 directed towards the interior of the vehicle is also provided a fixing barrel 8 making it possible to fix the rear light, for example by means of a screw engaged in the barrel 8 from the outside. rear light and in a threaded opening in the body of the motor vehicle, as will be explained later.

  The rear light support 10 comprises two wall elements situated on the internal side of the light support 10 each traversed by a respective opening l Ob, 1 O'b making it possible to secure the light support 10 on the body of the motor vehicle , for example by means of 10 studs integral with the body of the motor vehicle which can each be engaged in one of the openings 1Ob, 10'b during the mounting and fixing of the light support 10. The openings 1Ob, 10 'b have a dimension or a shape allowing adjustment of the position of the light support 10 with respect to the studs integral with the body, during assembly and of the fixing of the rear light support 10.

  In FIGS. 3 and 4, fastening elements 6 and 7 are shown respectively secured to the rear light housing and the cooperating elements 9 and 11 secured to an upper face 10a of the rear light support facing the lower edge 3a of the rear light 3, in the mounting position shown in FIG. 2.

  The fastening element 6 integral with the rear light housing 3 has the form of a plate having falling edges extending from the internal face of the rear light in a substantially longitudinal direction towards the interior of the motor vehicle. The plate-shaped fastening element 6 has a longitudinal assembly slot 12, in the longitudinal direction of the motor vehicle. The fixing element 9 integral with the upper face 10a of the rear light support consists of a hooking finger 9a and two studs 9b projecting upward relative to the upper face 1ia of the housing 10.

  The hooking finger 9a comprises a tapered upper end part having an inclined engagement surface leading to an engagement rim substantially parallel to the surface of the upper support part 1 Oa of the support 10.

  The fixing element 7 and constituted by a plate having a general longitudinal direction projecting from the internal face of the rear light housing which has on its upper and lower faces rectilinear ribs projecting in longitudinal direction 7'a and 7a . The corresponding fixing device 11 secured to the upper face I0a of the support 10 comprises a fastening finger 11a, of a shape analogous to the finger 9a described above, connected to the end of the upper part 10a of the housing 10 by a connecting part providing a possibility of deformation in bending of the latching finger 1la. The fixing device 11 of the support 10 10 also includes a stud 11 b projecting from the upper part 1 Oa of the support 10.

  The cooperating fixing devices 6, 9 and 7, 11 make it possible to produce a removable rigid fixing by clipping the rear light housing 3 onto the rear light support 10, as will be explained below, in particular with reference to the figure. 5 and FIGS. 10A, 1OB and 1OC showing three successive phases of an operation for dismantling the rear light housing, for example for replacing the bulb.

  In FIG. 5, the rear light 3 and the support 10 are shown in an initial phase during which their rigid assembly is carried out by means of the clipping fastening means shown in FIGS. 3 and 4.

  To carry out the assembly, the support 10 is placed with its upper face 1 Oa below the lower edge 3a of the rear light 3 and the fastening elements are engaged by clipping the upper part 10a of the support 10 25 onto the corresponding elements fixing by clipping the rear light 3 by displacement along the arrow 13. The tapered end part of the hooking finger 9a engages inside the groove 12 in the end part of the groove or external end located closest to the wall 3b of the rear light, the inclined engagement surface of the finger 9a coming into contact with one of the edges of the slot 12 and deforming by bending, the movement of the attachment finger 9a to the interior of the slot 12 continuing until the studs 9b press against the underside of the plate 6 of the rear light 3. The tapered end portion of the latching finger 9a has then reached the level of the upper side of the plate 6 and the finger 9a returns, by elasticity in bending, so as to ensure the attachment by means of the attachment rim at the lower end of the tapered part.

  Simultaneously, the tapered portion of the finger 11a comes into contact with one of the longitudinal edges of the plate 7, via its inclined engagement surface, which produces a progressive deformation by bending of the catching finger. 11, until the moment when the hooking rim of the tapered part of the catching finger 1la reaches the level of the upper surface of the plate 7 which is then in abutment on the stud 11b. The flexible finger 1 returns it by elasticity in bending in a position shown in FIG. 4 ensuring the attachment of the wafer 7 by means of its attachment rim. A rigid attachment of the rear light 3 was thus produced on the rear light support 10.

  In FIG. 6, the assembly constituted by the rear light 3 and its support 15 which have been previously assembled is presented in the fixing position on the bodywork 2 of the motor vehicle which comprises a fixing barrel 14 projecting towards the rear of the motor vehicle, in a determined position which makes it possible to achieve precise positioning of the rear light 3 on the body 2 of the motor vehicle. For this, the barrels 8 and 14 are pla20 cés in the axial extension of one another and a connecting screw is engaged from the outside of the motor vehicle in the barrel 8 and screwed into the threaded barrel 14 integral with the body 2.

  As can be seen in FIG. 7, when the rear light 3 is put in place and fixed to the bodywork 2 of the motor vehicle by means of the barrel 8 and the tapped barrel 14 placed in the axial extension one of the 'other and assembled by screwing, the openings 1Ob and 10'b of the rear light support 10 secured to the rear light 3 engage on two respective threaded studs 15 and 15' projecting from the rear part of the vehicle body 2 motor vehicle below the space reserved for the rear light 3. Due to the fact that a mounting clearance is provided, at least in the horizontal transverse direction of the motor vehicle and in the vertical direction, the engagement of the fixing openings 1 Ob and 1 O'b of the support 10 on the studs 15 and 15 'can be produced without difficulty, although the position of the studs 15 and 15' and their spacing are only guaranteed within certain manufacturing tolerances.

  To introduce a mounting clearance, one can make openings 10b and 10'b in the support 10 having the form of oblong openings or 5 having a diameter substantially greater than the diameter of the studs 15 and 1 5 '.

  The assembly of the support can be ensured by screwing nuts on threaded studs 15 or 15 'or by screwing studs or assembly screws in tapped holes in the positions of studs 15 and 10 15' on the body 2 of the motor vehicle.

  As shown in FIG. 8, when the rear light 3 and the support 10 have been fixed to the body of the motor vehicle, their relative position which has not been modified during assembly is characterized by the presence of a gap 16 of clearly defined width between the lower edge 15 3a of the light 3 and the upper support surface 1 Oa of the support 10.

  We have only described a single operation of assembling a rear light and its support and mounting the assembly produced on the vehicle body, but it is quite obvious that the same operation is carried out on each lateral sides of the motor vehicle for mounting the two two rear lights 3.

  In Figure 9, there is shown an operation subsequent to the mounting of the rear lights during which the bumper 4 is mounted on the motor vehicle, after mounting of the two rear lights.

  In FIG. 9, only the rear light supports 10 are shown, although, during the assembly operation of the bumper 4, the rear lights integral with the supports 10 are in place on the motor vehicle after their assembly has been carried out. as previously described. The removal of the rear lights 3 in the figure shows the upper assembly edge 4a of the bumper 4 which is introduced from the rear of the motor vehicle into the gap 16 between the rear lights 3 and the corresponding supports 10 , by means of assembly parts of the bumper having desired shapes and arrangements.

  The upper rim 4a of the bumper 4 inwards towards the inside comprises, at each of the assembly zones, a through hole 17 intended to come to engage on a fixing finger (for example by clipping) 18 in projection on the upper support face 10a of the support 10 and 5 in a rearward position relative to the light fastening elements 3 on the support 10. The positioning and fixing finger 18 of the bumper 4 is visible in particular in FIGS. 5 and 6 showing the upper surface 10a of the support 10 before and after the assembly of the rear light 3.

  The implementation of the bumper 4 is therefore carried out so that the positioning of the bumper relative to the rear lights 3 and in particular of its upper edge 4a relative to the lower edge 3a of the rear light 3 is obtained from a perfect way. The bumper 4 is assembled in this way using the rear light 3 and its support 10 as a mounting template.

  In addition, the bumper 4 is assembled to the support 10 and is therefore not fixed directly to the light 3. In the event of an impact on the bumper 4, the rear lights 3 are not liable to be damaged, in particular if the width of the gap 16 is sufficient to provide a slight clearance 20 of the upper edge 4a of the bumper 4 relative to the lower edge 3a of the light 3.

  The method according to the invention therefore makes it possible to ensure perfect and easy mounting of the rear lights and of the bumper and to avoid risks of deterioration of the rear lights in the event of impacts on the bumper.

  In addition, as shown in FIGS. 10A, lOB and 1OC, it is possible to easily disassemble the rear light (s) 3 after unscrewing the barrel assembly screw 8 and 14 ensuring the fixing of the light to the bodywork.

  FIG. 10A represents the initial position of the fixing elements 30 ensuring the fixing of a rear light on its support.

  As can be seen in FIG. 1 OB, to carry out the removal of the rear light 3, the rear light is pulled in the longitudinal direction and towards the rear, as represented by the arrow 20, so that the displacement of the plate fixing 6 moves the slot 12 until the point where the hooking end of the finger 9a is at the internal end of the slot 12 and that, simultaneously, the movement of the plate 7 completely releases the hooking part finger 1la reached the end of the plate 7 in the longitudinal direction.

  As shown in FIG. 10C, a slight push is exerted in a transverse direction towards the outside of the motor vehicle, in the direction of the arrow 21 which makes it possible to release the attachment portion of the finger 9a whose width is less than the width of the slot 12, due to the fact that the attachment portion of the finger 9a is no longer maintained by the thrust exerted by the finger 1a which has been released. The rear light 3 can then be lifted, which allows the fastening devices 6, 9 and 7, 11 to be released completely, as shown in FIG. 1 OC. It is then possible to carry out a bulb change operation on the body part situated opposite the rear light 3.

  The replacement of the rear light on the support 10 and on the body of the motor vehicle is carried out by the reverse operations to those which have just been described with reference to FIGS. 10A, 1OB and 10C.

  The device according to the invention therefore enables perfect mounting of the lighting device of a motor vehicle and of a bumper in a position adjacent to these lighting devices. In particular, the device makes it easy and perfect to mount a rear bumper of a motor vehicle, the upper part of which is adjacent to the lower edge of the rear lights of the motor vehicle.

  The invention applies to any type of motor vehicle comprising at least one bumper placed in a position adjacent to at least one lighting or signaling device of the motor vehicle. he

Claims (6)

  1.- Method for mounting, on the bodywork (2) of a motor vehicle, at least one lighting device (3) and a bumper (4) having at least one edge (4a), the mounting position is adjacent to the lighting device (3), characterized by the fact: - that the lighting device (3) and a lighting device support (10) are assembled, - That the lighting device (3) secured to the lighting device support (10) is fixed to the bodywork (2) of the motor vehicle, by means of at least one fixing element (8) ensuring a precise positioning of the lighting device (3) on the bodywork (2) of the motor vehicle, - that the lighting device support (10) is fixed on the bodywork (2), via fastening means (lOb, 10'b, 15, 15 ') cooperating 15 on the body (2) and the lighting device support (10) allowing adaptation of the position of the available support ositif lighting (10) relative to the body (2), - that the bumper (4) is presented in a mounting position adjacent to the lighting device (3), and - that the bumper (4) on the lighting device support (10).   2.- Method according to claim 1, characterized in that the assembly of the lighting device (3) and the device support (10) is carried out by clipping means (6, 9; 7 , 1 1) cooperating solitary, respectively, of an internal part of the lighting device (3) directed towards the interior of the motor vehicle, and of an upper bearing surface (10a) of the device support (10 ), by moving the lighting device (3) and the device support (10) relative to each other, in an assembly direction (13).   3.- mounting method according to any one of claims 1 and 2, characterized in that the lighting device (3) is fixed to the body (2) of the motor vehicle via a barrel (8) integral with the lighting device (3) placed in the axial extension of a barrel (14) threaded projecting from the body (2) of the motor vehicle and engaging a fixing means such as a screw in the barrel (8) of the lighting device (3) and in the barrel (14) projecting from the bodywork (2) of the motor vehicle.   4.- Method according to any one of claims 1 to 3, characterized in that the device support is fixed (10) on the body (2) of the motor vehicle by means of openings (1 Ob, 1 O'b) passing through parts of the wall of the device support (10), by engagement of the openings (1 Ob, 1O'b) of the device support (10) on studs (15, 15 ') projecting from the bodywork (2) of the motor vehicle and screwing of fixing nuts on the studs (15, 15 '), the openings (1Ob, 1O'b) having shapes or dimensions making it possible to adjust the position of the support ( 10) relative to the bodywork (2) of the motor vehicle, at least in a horizontal transverse direction of the motor vehicle and in a vertical direction.   5.- Method according to any one of claims 1 to 4, characterized in that the household a gap (16) between a lower edge (3a) of the lighting device (3) and an upper bearing surface (10a) of the support (10) to ensure the engagement of an upper edge (4a) of the bumper 20 (4) in the gap (16) and of an opening (17) passing through the upper edge (4a ) of the bumper (4) on a fixing finger (18) projecting from the upper support surface of the support (10).   6.- assembly assembly of a bumper (4) on the body (2) of a motor vehicle in a position adjacent to at least one lighting device (3), characterized in that it comprises: - a lighting device support (10) comprising fixing means (9, 11) intended to cooperate with corresponding means (6, 7) of the lighting device (3) to ensure a removable rigid fixing of the lighting device (3) on the lighting device support (10) and means (10b, 10'b) for engagement with mounting clearances on fixing means (15, 15 ') of the bodywork (2) of the motor vehicle, - at least one fixing means (8) of the lighting device (3) intended to be placed, in a precise assembly position of the lighting device (3), in correspondence with a corresponding fixing means (14) provided on the bodywork (2) of the motor vehicle, and - at least one means (17) for fixing the bumper on the lighting device support (10).