Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
  • B60J5/00—Doors
  • B60J5/10—Doors arranged at the vehicle rear
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
  • B60J5/00—Doors
  • B60J5/10—Doors arranged at the vehicle rear
  • B60J5/101—Doors arranged at the vehicle rear for non-load transporting vehicles, i.e. family cars including vans
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
  • B60J5/00—Doors
  • B60J5/10—Doors arranged at the vehicle rear
  • B60J5/101—Doors arranged at the vehicle rear for non-load transporting vehicles, i.e. family cars including vans
  • B60J5/107—Doors arranged at the vehicle rear for non-load transporting vehicles, i.e. family cars including vans constructional details, e.g. about door frame, panels, materials used, reinforcements

Definitions

• Motor vehicle tailgate The invention relates to plastic motor vehicle tailgates and more particularly to the side posts of the interior lining forming part of these tailgates.
• a tailgate box comprising an interior structural panel and an exterior trim panel both made of plastics.
• the inner lining has an opening at the top, intended to accommodate a transparent bezel, the side edges of which are formed by the uprights of the lining.
• This type of upright constitutes a profile with an open cross section, of the U-shaped type.
• This type of upright is satisfactory in terms of structure but is not so from an aesthetic point of view, in particular for a passenger inside the vehicle. can see the part of the pillars visible from inside the passenger compartment.
• trim linings on the internal face of the lining, in particular covering the uprights.
• a trim generally in grained plastic, is attached to the side upright, and it is positioned and sized so as to hide the walls, in particular the internal side wall.
• the trim which presents the appearance required for car manufacturers.
• the presence of such a packing also poses certain problems.
• This superposition of panels increases the weight of the whole or even adds additional assembly operations to obtain the final part.
• the angle between the lateral face grained and the base of the upright is approximately equal to at least 12 °: in fact, the sole removal of the lining already provides an improvement in rear vision by removing this superposition, but the conditions of release from the liner and in particular of the grained side face of the upright imposes this minimum angle of 12 ° with a standard grain so as not to damage by tearing the grain produced on the surface of the grained side face.
• the object of the invention is in particular to remedy the above problems by providing a motor vehicle tailgate making it possible to have increased visibility through the rear window while having an optimal aesthetic appearance.
• the invention relates to a motor vehicle tailgate comprising at least one lateral upright on which is attached a rear window, the lateral upright constituting a profile with an open U-shaped cross section, the opening of which faces towards the rear. rear window, the side pillar comprising an internal side wall comprising a first face visible from inside the passenger compartment of the vehicle on which the tailgate is mounted, the first face being at least partially covered with a grain formed by molding with the side upright, the angle formed between the internal side wall and a longitudinal axis of the motor vehicle being less than 10 °, preferably substantially equal to 5 °.
• a tailgate comprising side pillars, the parts of which visible from the interior of the passenger compartment include a graining formed by molding with the side pillars and giving them an optimal aesthetic appearance.
• the narrowness of the angle between the walls of the side pillars visible from inside the passenger compartment and a longitudinal axis of the vehicle also allows less encroachment on the rear window rear view area.
• the absence of trim (compared to part of the prior art) and the narrowness of the angle between the walls of the side pillars visible from inside the passenger compartment and a longitudinal axis of the vehicle make it possible to maximize the rear visibility through the rear window.
• the proposed solution also has no impact on the structural rigidity of the pillar or on the total width of the tailgate.
• the tailgate according to the invention may further include at least one of the following characteristics:
• the depth of the graining on the face of the internal side wall is between 10 pm and 50 pm, preferably between 10 pm and 20 pm,
• the graining on the face of the internal side wall is formed of several zones comprising grains having a different depth, distribution and / or orientation
• - the side upright comprises an outer side wall comprising a face visible from the outside of the vehicle on which the tailgate is mounted and when the tailgate is open, the face of the outer side wall being covered at least partially with a grain coming from molding with the side upright
• - the depth of the embossing on the face of the outer side wall is between 10 pm and 50 pm, preferably between 10 pm and 20 pm
• the graining on the face of the outer side wall is formed of several zones comprising grains having a different depth, distribution and / or orientation.
• the subject of the invention is also a process for manufacturing a tailgate according to the invention, in which the side upright is produced by injection into a mold, the molding surface of the internal side wall of the lateral upright of which is at least partly grained by laser engraving.
• the method according to the invention can also include at least one of the following characteristics:
• the molding surface of the outer side wall of the side upright is at least partly grained by laser engraving
• a graining is carried out on the face of the inner side wall and / or on the face of the outer side wall with a depth of between 10 pm and 50 pm, preferably between 10 pm and 20 pm and
• a graining is carried out on the face of the inner side wall and / or on the face of the outer side wall formed of several zones comprising grains having a different depth, distribution and / or orientation.
• FIG. 1 is a rear view of an exemplary embodiment of a tailgate according to the invention
• Figure 2 is a sectional view along the plane II of the tailgate of Figure 1
• Figure 3 is a side view of the grained side upright
• FIG. 4A is a representation of a mold making it possible to implement the manufacturing process according to the invention
• Figure 4B is an enlargement of part of the mold of Figure 4a.
• FIG. 1 illustrating a tailgate 2 comprising a lower part 4, an upper part 6 and two lateral uprights 8 connecting the lower and upper parts 4 and 6.
• the tailgate 2 is made of plastic, this being known from the person skilled in the art. It consists of an outer panel and a liner visible on the upper left of the tailgate 2 in Figure 1.
• Each of the side uprights 8 is formed by the lining and constitutes a profile with an open U-shaped cross section, the opening of which faces a rear window 10 partly mounted on the side uprights 8.
• the side uprights 8 comprise a base 12 forming the bottom of the U, and located towards the front of the vehicle when the tailgate 2 is in the closed position on the vehicle: the opening of the U of the side uprights 8 is thus directed towards the rear. of the vehicle in this position.
• the base 12 is provided with two side flanks, an inner side wall 14 and an outer side wall 16.
• the inner side wall 14 is the wall closest to the longitudinal axis of the vehicle passing through the center of the latter (or Y0 ).
• the outer side wall 16 is furthest from this axis.
• the side pillars 8 do not include any trim masking the inner side wall 14 which is therefore visible from inside the vehicle cabin.
• the face 18 of the internal side wall 14 (that is to say the part of this wall visible from the interior of the passenger compartment) is covered at least in part with a graining (visible in figure 3).
• the latter provides an optimal aesthetic appearance for an element visible from inside the vehicle.
• the graining came from molding with the side uprights 8.
• the angle a formed by the internal side wall 14 and a longitudinal axis X of the vehicle is less than 10 °, preferably substantially equal to 5 °.
• an angle b formed by this same longitudinal axis X and an internal side wall according to the prior art is approximately equal to 12 °. Reducing this angle allows a range gain of vision of about 4 cm for a window with a width of 100 cm and a height of upright between 100 and 150 mm.
• the depth of the graining may be between 10 pm and 50 pm, preferably between 10 pm and 20 pm.
• a graining of a shallower depth is obtained than in the prior art. This reduction in grain depth allows easier demoulding of the side uprights 8.
• the graining came from molding with the side uprights.
• the mold used comprises, at the level of the molding surface 22 at the level of which the internal side wall 14 is molded and making it possible to obtain the face 18, a negative of the graining (negative made up of reliefs complementary to the reliefs formed on the face 18 of the internal side wall 14).
• the reduction in the grain depth makes it possible to facilitate demolding and thus to reduce the angle formed between the molding surface 24 of the base 12 and the molding surface of the internal side wall 14. The result is therefore obtained. vision gain through the rear window mentioned above.
• the graining present on the inner side wall 14 may be heterogeneous.
• the depth of the grains, the distribution of the latter or their orientation can vary in order to achieve a styling effect as can be seen in FIG. 3.
• the outer side wall 16 comprises a face 26 which can be visible from outside the vehicle when the tailgate 2 mounted on the vehicle is in the open position.
• the face 26 of the outer side wall 16 can therefore include a graining of the type of that described above. All the points developed above to detail the graining of the face 18 of the side wall 14 (depth, homogeneity or heterogeneity, etc.) applies to the graining of the face 26 of the outer side wall 16.
• the graining of the face 26 of the outer side wall 16 may be the same or different from that of the face 18 of the inner side wall 14 .
• the invention also relates to a method of manufacturing a tailgate 2 according to the invention.
• the side upright 8 is produced by injection into a mold, the molding surface 22 of which of the internal side wall 14 of the lateral upright 8 is at least partly grained by laser engraving.
• Laser engraving makes it possible, unlike graining of a mold by chemical attack, to produce graining on the mold that is shallower and therefore very precise, both in terms of grain depth, distribution of the latter, etc.
• side uprights 10 rear window 12: base of the side uprights 14: internal side wall of the side uprights 16: outer side wall of the side uprights

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
• Body Structure For Vehicles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=69903475

Family Applications (1)

Country Status (4)

Family Cites Families (4)

• 2019
  • 2019-12-17 FR FR1914692A patent/FR3104497B1/fr active Active
• 2020
  • 2020-08-11 CN CN202021660469.5U patent/CN213082884U/zh active Active
  • 2020-08-11 CN CN202010802594.3A patent/CN112977022A/zh active Pending
  • 2020-12-14 WO PCT/EP2020/086047 patent/WO2021122485A1/fr unknown
  • 2020-12-14 EP EP20823823.8A patent/EP4077006A1/de active Pending

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