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
  • B60J5/04—Doors arranged at the vehicle sides
  • B60J5/0412—Lower door structure
  • B60J5/0416—Assembly panels to be installed in doors as a module with components, e.g. lock or window lifter, attached thereto
• • 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
  • B60J5/04—Doors arranged at the vehicle sides
  • B60J5/0401—Upper door structure
  • B60J5/0408—Upper door structure fastening window frame or parts of window frame to lower door structure
• • 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
  • B60J5/04—Doors arranged at the vehicle sides
  • B60J5/042—Reinforcement elements
  • B60J5/0422—Elongated type elements, e.g. beams, cables, belts or wires
  • B60J5/0423—Elongated type elements, e.g. beams, cables, belts or wires characterised by position in the lower door structure
  • B60J5/0426—Elongated type elements, e.g. beams, cables, belts or wires characterised by position in the lower door structure the elements being arranged at the beltline
• • 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
  • B60J5/04—Doors arranged at the vehicle sides
  • B60J5/042—Reinforcement elements
  • B60J5/0422—Elongated type elements, e.g. beams, cables, belts or wires
  • B60J5/0423—Elongated type elements, e.g. beams, cables, belts or wires characterised by position in the lower door structure
  • B60J5/0431—Elongated type elements, e.g. beams, cables, belts or wires characterised by position in the lower door structure the elements being arranged at the hinge area

Definitions

• the invention relates to a vehicle door comprising an acoustic chamber that contributes to the rigidity of the door and integrates support functions for different equipment of the door.
• acoustic chamber In order to improve the quality of the sound reproduction of a loudspeaker, particularly in the low frequencies, it is known to fix the loudspeaker on an acoustic chamber.
• One of the roles of this type of acoustic chamber is to prevent acoustic waves emitted from the rear of the speaker from interfering with the acoustic waves produced by the front of said speaker.
• the acoustic chamber must preferably have a large volume.
• the speakers are usually placed on the doors. The establishment of such a large volume acoustic chamber in a vehicle door is difficult to achieve due to lack of space available in the door or because it generates increases in the external volume of the door on the passenger side of the vehicle.
• patent US7237825 proposes an acoustic chamber on which is fixed a loudspeaker and which is constituted by the volume of a lateral shock absorber disposed in the door trim at the hips of the passenger, and by a volume extending between the loudspeaker and the side impact absorber.
• This design makes it possible to avoid creating a specific volume for the acoustic chamber by integrating said volume of the acoustic chamber into the volume of the lateral shock absorber. The impact on the interior volume of the acoustic chamber is minimized.
• the disadvantage of such a design is that the volume of the acoustic chamber is limited by the volume of the side impact absorber.
• the volume of the duct connecting the loudspeaker to the side impact absorber can increase the volume of the door on the passenger side of the vehicle and add mass. Then the solution can not be applied to a door that does not have a shock absorber.
• the object of the invention is to create a large volume acoustic chamber that does not increase the volume of the door in the passenger compartment of the vehicle with respect to a door not including such an acoustic chamber, even in the absence of a side impact absorber, and which does not complicate the design and manufacture of the door.
• a vehicle door having at least one inner panel and one outer panel, said inner and outer panels defining, between them, a box in the part of the door located under a window portion of the door, and an acoustic chamber, characterized in that the acoustic chamber is constituted by at least one hollow rigid piece defining a volume, said rigid piece forming said acoustic chamber extending between the lateral edges of the inner panel, in the upper part of the box along the window portion, and creating a rigid reinforcement structure between the side edges of the inner panel.
• the acoustic chamber may comprise at least one loudspeaker opening capable of receiving a loudspeaker and allowing the sound emitted by the rear face of said loudspeaker to be diffused in said acoustic chamber, whereas the sound emitted by the face before the speaker is broadcast outside the acoustic chamber.
• the acoustic chamber may be shaped so as to be able to receive a loudspeaker in its interior volume, and have an opening adapted to allow the acoustic waves emitted inside the acoustic chamber to come out in the manner of a audible loudspeaker.
• the advantage of such a design is to allow to create a large volume acoustic chamber without impacting the volume of said door in the passenger compartment of the vehicle by inserting at least in the interior volume of the box of said door.
• the realization of a large volume acoustic chamber makes it possible to improve the sound quality of the low frequency sounds.
• Acoustic systems added to generate low frequency sounds, such as subwoofers often placed in the trunk, can be removed without degrading the acoustic quality of the audio system of the vehicle. The cost and the mass of the vehicle are thus reduced.
• the implementation is simplified by a reduction in the number of parts to be mounted on the inner panel.
• this solution allows to install a single piece gathering the function of said longitudinal cross member and the acoustic chamber.
• the rigidity of the door and its behavior during a frontal impact are also improved thanks to a larger section of the acoustic chamber, necessary to offer a large volume.
• the transmission of forces in the event of a frontal impact for example from the front foot of the vehicle towards the middle pillar in the case of a front door, is improved.
• the position of the upper edge of the acoustic chamber along the bottom of the window portion at the top of the door box, allows to create a rigid support for fixing a window liner. This position also allows to benefit from a rigid support for fixing the door trim on the upper part of said door trim.
• the acoustic chamber is preferably positioned on the vehicle interior side with respect to the plane defined by the window of the door when the door is lowered. But in the case of a vehicle whose window does not go down, the acoustic chamber may extend over the entire thickness of the door box, the thickness of the door box being the size of said box along the transverse axis of the vehicle when the door is installed on the vehicle and in the closed position.
• said inner panel may be in the form of a frame traversing the periphery of the door and having no material at its center so as to obtain a lightened inner panel.
• the inner panel can be made of one or more pieces assembled together.
• the acoustic chamber installed between the front portion and the rear portion of the frame-shaped inner panel, at the top of the door box, connects two substantially parallel segments of said inner panel, forming the side edges of the door, and stiffens the door. entire interior panel.
• the acoustic chamber is preferably fixed at least on two of the parts constituting said inner panel, and preferably on all the parts which constitute said inner panel.
• the acoustic chamber strengthens the connection between the various pieces that make up the panel inside.
• the inner panel consists of a door frame defining at least the box with the outer panel and a window frame surrounding the door glass when said window is fully raised
• the ends of the frame of window covering at least partly the upper edges of the door frame the acoustic chamber is preferably fixed at least on the ends of the window frame covering the upper edges of the door frame to strengthen the connection between the window frame and the frame door, as well as reinforce the inner panel at the boundary between the box and the window portion of the door.
• said inner panel may be under the form of an open frame in its U-shaped upper part, that the acoustic chamber will close in its upper part by placing itself between the vertical branches of the U, said branches of U corresponding to the lateral edges of the inner panel, and said chamber acoustic being attached to said vertical branches of the U, preferably at least at the ends of said branches of the U.
• an acoustic chamber comprising at least one loudspeaker opening capable of receiving a loudspeaker and allowing the sound emitted by the rear face of said loudspeaker to be broadcast in a loudspeaker.
• said acoustic chamber while the sound emitted by the front face of the loudspeaker is diffused outside the acoustic chamber, the internal volume of the acoustic chamber is at least equal to 10 liters and / or of internal section of the acoustic chamber; at least equal to 120 cm 2 .
• the inner sections of the acoustic chamber should also preferably have a minimum area to ensure proper diffusion of acoustic waves throughout the interior volume of the acoustic chamber. Calculations show that the inner sections of the acoustic chamber must be at least 120 cm 2 to obtain a good diffusion of acoustic waves in the interior volume of the acoustic chamber. Similarly, for a better sound result, the inner faces of the acoustic chamber will not be parallel to each other in order to inhibit standing waves.
• Said inner faces may also be performed so as not to create flat surfaces, for example having a wavy shape.
• the interior of the acoustic chamber may also be coated in part or in full the coating having acoustic wave absorption properties.
• at least a portion of the outer surface of the vehicle-side acoustic chamber when the door is mounted on the vehicle and in the closed position, forms at least a portion of the vehicle. interior door trim. Part of the surface of said acoustic chamber is visible to the passenger.
• a reduced-size trim panel forms the rest of the door trim. The size of said door trim panel is reduced, reducing its weight and cost.
• the thickness usually taken by the thickness of the interior door trim can be used to increase the volume of the acoustic chamber.
• a plastic coating on the acoustic chamber may be provided to improve the visual and tactile quality of the outer surface of the acoustic chamber visible to a passenger of the vehicle.
• the door opens by rotation and comprises at least two hinge hinges to allow opening by rotation of the door, said hinges being placed one above the other. the other substantially along the vertical axis in the vehicle reference frame, and said hinges being positioned between the bottom and the top of the door box by placing themselves in the reference frame of the vehicle and fixed to the door by means of hinge reinforcements one of the edges of the acoustic chamber extends at least from the highest positioned high hinge to a low hinge positioned under said high hinge, the acoustic chamber being fixed by said edge at least on one of the reinforcements of hinge placed on the inner panel, or said acoustic chamber comprising at least one of said hinge reinforcements on which the hinges are fixed to the door.
• the door hinges are generally attached to the door via hinge reinforcements, the role of which is to provide a sufficiently solid area in the structure of the door so as to ensure a solid attachment of said hinges to the door.
• the hinge reinforcements may be parts independent of one another or be formed in one piece extending from the high hinge to the low hinge.
• the fixing of the acoustic chamber on these reinforcements hinges, or the integration of these reinforcements of hinge to the acoustic chamber reliably transfers the forces from the hinges to the acoustic chamber. In the event of frontal or lateral impact, the holding of the door and the transfer of forces between the door and the structure of the vehicle during the shock will thus be able to pass more efficiently through the acoustic chamber.
• the integration of said reinforcements to the acoustic chamber simplifies the design of the interior door panel.
• the rigidity of the door vis-à-vis the substantially vertical stresses and directed to the ground when the door is mounted on the vehicle, applied to the edge of the door opposite the edge of said door receiving the hinges, is improved.
• the door stop system conventionally installed on vehicle doors can also be attached to the acoustic chamber.
• one of the edges of the acoustic chamber extends to a lower corner of the inner panel so as to allow implantation of the speaker fixed on said acoustic chamber, preferably so that said speaker is in the area facing the volume of the cellar in front of the seat of the passenger seat of the vehicle, in the lower part and front of the door, when the door is installed on the vehicle.
• This design is more particularly adapted to an acoustic chamber having at least one loudspeaker opening adapted to receive a speaker and allowing the sound emitted by the rear face of said speaker to be diffused in said acoustic chamber, while the sound emitted by the front of the loudspeaker is diffused outside the acoustic chamber.
• the loudspeaker is positioned in such a way as to allow quality sound to be diffused into the vehicle, since no element of the vehicle is in front of the loudspeaker to hinder the diffusion of the acoustic waves, such as for example a seat of passenger or a trim element of the passenger compartment.
• at least one of the ends of the acoustic chamber is fixed at least on a lock reinforcement placed on the inner door panel and for fixing the locking mechanism on the door, or integrates said latch reinforcement.
• the acoustic chamber comprises fixing means for door equipment, such as a gusset or a mirror foot, an interior door handle, an interior door unlocking control, a top loudspeaker for producing high-pitched sounds, a side airbag, one or more window guide rails, a window lift motor, an interior door trim.
• the acoustic chamber being a rigid part participating in the structure of the inner door panel, it can directly recover the forces applied to these equipment listed above in a non-limiting manner. This design makes it possible to remove from the interior door panel reinforcements and fixings specific for these equipment, and to lighten said inner panel.
• the fixing means of the mirror gusset placed on the acoustic chamber will be positioned in the area of the fixed window.
• the attachment zone may be a protrusion on the surface of the acoustic chamber so as to create a surface capable of receiving means for fixing the mirror gusset.
• a lateral impact reinforcement in the form of a beam extends substantially from the bottom back corner of the inner door panel to the acoustic chamber in an oblique direction, substantially direction of the front corner of the top of the door box.
• the forces received by the side impact reinforcement in the event of a side impact are thus dispersed towards the structure of the vehicle on one side via the end of the beam in connection with the acoustic chamber, said acoustic chamber transmitting the forces to the vehicle structure such as the front and middle legs of the vehicle, and the other side by the other end of the beam located in the rear corner at the bottom of the door, facing an element of the vehicle structure, such as for example the lower part of the middle pillar.
• the lateral impact reinforcement is in the form of a hollow beam whose interior volume is in communication with the interior volume of the acoustic chamber so as to increase the internal volume of said acoustic chamber, the volume of said lateral impact reinforcement preferably being closed at the end of said lateral impact reinforcement opposite the end connected to the acoustic chamber.
• This design increases the volume of the acoustic chamber, while reducing the number of parts mounted in the vehicle.
• the acoustic chamber and the lateral impact reinforcement can be made in one piece or assembled before being mounted in the door. At the time of assembly, a single operation allows the mounting of the acoustic chamber and lateral reinforcement
• the acoustic chamber is made of plastic or composite material, and comprises metal inserts adapted to allow the attachment of the acoustic chamber to the inner panel and the attachment of the equipment of the door to the acoustic chamber.
• plastic or composite materials has the advantage of making it possible to produce pieces of complex shapes with simple and known production methods, for example by molding or blowing. If the acoustic chamber is fixed on the inner panel before cataphoresis passage, preferably choose a plastic material resistant to the cataphoresis bath.
• the metal inserts make it possible to locally reinforce the acoustic chamber and to create fixing means, in particular for fixing the acoustic chamber by welding on the inner door panel, by crimping directly on said inner panel or by crimping on said inner panel made at the same time as crimping the outer panel on said inner panel.
• the use of plastic or composite materials makes it possible to produce rigid, resistant and lightweight parts.
• the step of fixing said acoustic chamber on said inner panel taking place before or at the same time as the step of fixing the outer panel on the panel inside.
• said step of cataphoresis treatment of the door takes place after the step of fixing the acoustic chamber on the inner panel.
• the means for fixing the acoustic chamber on the panel Inside can be crimped or welded with crimping or welding the edges of the outer panel to the inner panel, or by another crimping or welding tool acting in conjunction with the crimping of the outer panel on the inner panel.
• Other fastening means known to those skilled in the art such as gluing or fixing by screw-nut also allow a fixing of the acoustic chamber on the inner panel at the same time as the fixing of the outer panel on the inner panel .
• This method allows the acoustic chamber to be placed and fixed on the inner panel before the inner and outer door panels are already assembled.
• the mounting of the acoustic chamber is not dependent on access to the volume of the door box between the inner and outer panel when said inner and outer panels are fixed to one another.
• the constraints on the shape and the volume of the acoustic chamber are reduced.
• a complementary step for closing said holes is carried out so that the sound waves diffused in said acoustic chamber do not emerge through said openings.
• the invention also relates to an acoustic chamber intended to be installed on a vehicle door and comprising an opening adapted to receive a loudspeaker, characterized in that said acoustic chamber is rigid and consists of a structural element of the door on which it is intended to be fixed, and in that it comprises fixing means for fixing said acoustic chamber on at least one structural element of said door so as to participate in the rigidity of said door.
• the invention also relates to a vehicle comprising at least one door as described above.
• the term door is to be considered as any opening of the vehicle giving access to the interior volume of the vehicle.
• FIG. 1 is a general schematic view of a conventional vehicle door having a box, a window and a window frame.
• FIG. 2 is a vehicle interior view of a vehicle door equipped only with an inner panel, an outer panel and having an acoustic chamber according to the invention.
• FIG. 3 is a view along a section A-A of the door shown in Figure 1.
• Figure 4 is a view similar to Figure 1, comprising a lateral impact reinforcement according to the invention.
• FIG. 5 is a view of an embodiment of the interior door panel without the acoustic chamber, comprising a door frame and a window frame.
• FIG. 6 is a view of the inner door panel of Figure 5 equipped with the acoustic chamber.
• FIG. 7 is a view of a door comprising an acoustic chamber according to the invention, and a liner not covering said acoustic chamber.
• the vehicle door 1 consists of a box 13 located under a window portion 15.
• FIG. 2 shows a vehicle door 1, comprising an inner panel 11 on which is fixed an acoustic chamber 2.
• the acoustic chamber 2 extends from the front edge to the rear edge of said inner panel 11, the front and rear being defined in relation to the reference system of the vehicle, door 1 mounted and closed on the vehicle.
• the acoustic chamber 2 comprises a loudspeaker opening 21 capable of receiving a loudspeaker 5 so that the sound emitted by the rear face of said loudspeaker 5 is diffused only in the acoustic chamber 2.
• Fastening means of the loudspeaker 5, known to those skilled in the art, are positioned on the surface of the acoustic chamber 2, around the speaker opening 21.
• the upper edge of the acoustic chamber 2 extends substantially along of the upper edge of the box 13 of door 1.
• the interior volume and the section of the acoustic chamber 2 are adapted according to the size of the speaker 5.
• a loudspeaker 5 of more than 160 mm in diameter we will ideally choose an acoustic chamber 2 with an interior volume greater than 10 liters and whose interior sections are at least 120 cm 2 .
• a speaker 5 165 mm in diameter it will design an acoustic chamber with a volume substantially equal to 12 liters and whose inner sections are greater than or equal to 130 cm 2 .
• the interior surfaces of the walls of the acoustic chamber 2 will be chosen non-planar preferences, such as with corrugations or ribs. Said inner surfaces of the walls of the acoustic chamber 2 may also be designed to be non-parallel to each other. Alternatively, the inner surfaces of the acoustic chamber 2 may be coated at least in part by an acoustic wave absorbing material.
• the acoustic chamber 2 consists of a longitudinal hollow structure and is fixed by its front and rear ends to the front and rear edges of the inner panel 11.
• Said acoustic chamber 2 is made of a rigid material such as sheet steel, a filled plastic material or a composite material, such as for example a polyamide 6.6 loaded with chopped glass fibers, in order to obtain a rigid and light acoustic chamber 2.
• the rigidity of the acoustic chamber 2, especially in compression, will be greater as the section of the acoustic chamber 2 in a vertical plane perpendicular to the longitudinal axis of the door will be large.
• the acoustic chamber 2 contributes to the rigidity of the door 1 and provides said door 1 an effective behavior in case of impact.
• the forces of the shock transmitted to the door 1 by the front foot of the vehicle will be transmitted to the foot of the vehicle by the acoustic chamber 2.
• the forces can be distributed on each side of the door 1 on the structural elements of the vehicle such as the front and middle feet by the acoustic chamber 2.
• Ribs inside the acoustic chamber 2 preferably not creating a closed volume within the same volume of said acoustic chamber 2, may be provided to improve the flexural and compressive rigidity of said acoustic chamber 2. These ribs can participate in the inhibition of standing waves in avoiding training flat surface in the acoustic chamber 2.
• the acoustic chamber 2 extends longitudinally over the entire length of the inner panel 11.
• FIG. 3 shows a section along the axis AA indicated in FIG. 1 and schematizes a possible implantation of the acoustic chamber 2 in the door 1.
• FIG. 4 shows a door opening by rotation around high hinges 301 and low 302 disposed one above the other so that the axis of rotation 7 of the door is substantially vertical in the reference system of the vehicle.
• the acoustic chamber 2 is fixed to the inner panel 11 at least via hinge reinforcements 31 and 32 placed at the front of the door 1, and on which the hinges 301 and 302 are fixed.
• Other attachment points 25 between the acoustic chamber 2 and the inner panel 11 are provided on the front and rear edges of the inner panel 11.
• the hinge reinforcements 31 and 32 may be directly attached or integrated into the acoustic chamber. 2, and the inner panel 11 fixed only on the acoustic chamber 2.
• the hinge reinforcements 31 and 32 are shown as two parts independent of one another.
• the hinge reinforcements 31 and 32 may also be formed in one piece extending from the upper hinge 301 to the low hinge 302.
• the rear end of the acoustic chamber 2 is fixed to the door 1 by the intermediate of a latch reinforcement 4, on which is fixed the locking system, arranged on the rear edge of the inner panel 11.
• the latch reinforcement 4 can also be integrated with the acoustic chamber 2.
• the fastening means 25 of the acoustic chamber 2 on the inner panel 11 and / or on the hinge reinforcements 31, 32 and latch 4 are conventional fastening means, known per se.
• the fastening means 25 comprise metal inserts placed in the material of the acoustic chamber.
• the fastening means 25 may be in the form of metal blades protruding from the edges of the acoustic chamber 2 so as to allow the welding or crimping of said blades, or the establishment of fasteners by rivets or screw systems type -nut. Fixings can also be made by gluing.
• said reinforcements 31, 32 and 4 may be in the form of metal inserts placed in or on the walls of the acoustic chamber 2.
• the front edge of the acoustic chamber 2 extends above and below the hinges 301 and 302, down to the bottom edge of the inner panel 11.
• the acoustic chamber 2 comprises supports equipped with fastening means for supporting equipment such as a support for the door pull handle 22, a support for the interior door opening control 23 or a support for the door handle. rear view mirror 24.
• the skilled person will identify of himself other door equipment that can be attached to the acoustic chamber, such as for example and without limitation, a loudspeaker producing acute sounds, commonly called “tweeter , an airbag, commonly known as an airbag, window guide rails, a window lift motor, an interior door trim, a window cleaner.
• the mirror gusset support zone 24 is preferably placed in an area that is not traversed by the pane 14 during its downward movement.
• the rear view mirror gusset being positioned on the outer face of the door 1 and the acoustic chamber 2 on the inner panel 11, the passenger side vehicle with respect to the window 14 when it has gone down, the support member the mirror gusset 24 must pass through the plane defined by the window 14 during its movement.
• the door comprises a fixed window 16 at the front of the window 14, said rearview mirror gusset support zone 24 is placed under the fixed window 26.
• the door 1 comprises a lateral impact reinforcement 6 in the form of a beam extending substantially from the bottom back corner of the inner door panel 11 to the acoustic chamber 2 according to an oblique direction substantially towards the upper front corner of the box 13 of the door 1.
• the lateral shock reinforcement 6 is hollow.
• the internal volume of said lateral reinforcement 6 is in communication with the interior volume of the acoustic chamber 2 by the end by which said lateral shock reinforcement 6 is connected to said acoustic chamber 2, so as to increase the total volume in which the waves acoustic signals emitted by the rear face of the loudspeaker 5 are diffused.
• the internal volume of said lateral impact reinforcement 6 is closed at the end of said lateral impact reinforcement 6 opposite to the end of said lateral impact reinforcement 6 connected to the acoustic chamber 2.
• the lateral impact reinforcement 6 can be realized either in one piece with the acoustic chamber 2, or by an independent piece fixed on the acoustic chamber 2.
• the lateral shock reinforcement 6 may, alternatively, be a solid piece or have an interior volume that does not participate in the an increase in the volume in which the acoustic waves emitted by the rear of the loudspeaker 5 diffuse.
• FIGS. 5 and 6 show an interior door panel 11, composed of at least two rooms, a window frame 111 and a door frame 112.
• the door frame 112 can traverse the periphery of the door, the window frame 111 superimposed on the portion of the door frame 112 placed in the window portion 15 of the door.
• the door frame 112 forms only the portion of the inner panel 11 located in the box while the window frame forms the portion of the inner panel 11 located in the window portion 13.
• the acoustic chamber 2 is positioned between the front and rear edges of the inner panel 11 and creates a structural element rigidifying the inner panel 11, the acoustic chamber 2 separating said inner panel 11 in an upper part and a lower part.
• the front and rear edges of the acoustic chamber 2 at least partially cover the junctions between the window frame 111 and the door frame 112, and the fastenings of the acoustic chamber 2 on the inner panel 11 are arranged on the window frame 111 and the door frame 112 so as to strengthen the connection between said window frames 111 and door frame 112.
• the rear end of the window frame 111 can be superimposed on a portion of the door frame 112 so to form a latch reinforcement 4.
• the rear end of the acoustic chamber 2 can be fixed on the portion of the rear end of the window frame 111 covering a portion of the door frame 112 and forming said latch reinforcement 4. design makes it possible to considerably stiffen the door 1 at the level of the zone situated at the boundary between the window portion 15 and the caisson portion 13, in particular with respect to the aerodynamic stresses or during infotration attempts. raction.
• FIG. 7 shows a door 1, part of the surface of the acoustic chamber 2 of which carries part of the interior lining of the door 1.
• the surface of the acoustic chamber 2 visible to the passenger can be covered with a plastic material or natural, such as leather, to improve the tactile comfort and aesthetics of said visible surface.
• An interior trim panel 17 covers at least the surfaces of the box 13 on the passenger side of the vehicle not including the chamber 2, in particular the surfaces under said acoustic chamber 2.
• the thickness usually taken by the interior door trim is integrated with the acoustic chamber 2 and increases the volume of said acoustic chamber 2.
• a plastic or composite material to produce the acoustic chamber 2 such as for example polyamide 6.6 loaded with cut glass fibers, makes it possible to produce a light but rigid piece with complex shapes while being easy to produce and using known and controlled production techniques.
• the acoustic chamber 2 is produced by molding or blowing plastic material, stamping a composite material. It can also be produced by a projection of glass fibers and a thermoplastic such as polyamide 6.6, on a preforming mold, followed by thermocompression, according to a process called dry preform thermocompression, or by a projection of glasses and a thermoset plastic material on a preform mold followed by a thermocompression called F3P.
• the acoustic chamber 2 can be made in one piece or in several pieces which are then assembled by gluing or any other fastening means known to those skilled in the art.
• the acoustic chamber 2 is fixed on the inner panel 11 of the door 1 to the cladding, before mounting the outer panel 12 of the door 1 on the inner panel 11 of the door 1.
• the outer panel 12 of the door 1 is then attached to the inner panel 11.
• the entire door 1 can then be treated in a cataphoresis bath. Holes are provided in the acoustic chamber 2 in order to allow the evacuation of the liquid from the cataphoresis bath retained in the volume of the said acoustic chamber 2. They are plugged with putty or plugs after the passage in cataphoresis.
• the fixing of the acoustic chamber 2 on the inner panel can also be carried out during the fixing of the outer panel 12 on the inner panel 11, the fixing operation of the outer panel 12 on the inner panel 11 generating the fixing of the acoustic chamber 2 on the inner panel 11.
• the fixing of the acoustic chamber on the door can be achieved by means of metal blade fixed to the acoustic chamber 2 and being inserted at the portions of the outer panel 12 which are intended to be crimped on the inner panel 11, the crimping of said edges causing the crimping of the metal blades coming from the acoustic chamber 2 on the edges of the inner panel 11.
• a lateral shock reinforcement 6 is an independent piece fixed to the acoustic chamber, it will preferably be fixed before the installation of the acoustic chamber 2 on the inner panel 11.

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=50069040

Family Applications (1)

Country Status (4)

Families Citing this family (1)

Family Cites Families (6)

• 2013
  • 2013-09-23 FR FR1359097A patent/FR3010943B1/fr active Active
• 2014
  • 2014-09-15 CN CN201480052493.1A patent/CN105579263B/zh not_active Expired - Fee Related
  • 2014-09-15 EP EP14784294.2A patent/EP3049266A1/de not_active Withdrawn
  • 2014-09-15 WO PCT/FR2014/052294 patent/WO2015040318A1/fr active Application Filing

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