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
  • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
  • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
  • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
  • B29C45/17—Component parts, details or accessories; Auxiliary operations
  • B29C45/1703—Introducing an auxiliary fluid into the mould
  • B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
  • B62D25/08—Front or rear portions
  • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
  • B29C45/17—Component parts, details or accessories; Auxiliary operations
  • B29C45/1703—Introducing an auxiliary fluid into the mould
  • B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
  • B29C45/1706—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles using particular fluids or fluid generating substances
  • B29C2045/1707—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles using particular fluids or fluid generating substances using a liquid, e.g. water
  • B29C2045/1708—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles using particular fluids or fluid generating substances using a liquid, e.g. water removing the liquid from the hollow

Definitions

• the invention relates to a door structure device for a motor vehicle trunk.
• the invention also relates to a method for producing such a structural device.
• the invention also relates to a trunk door of a motor vehicle comprising such a door structure device.
• the invention relates to a vehicle body and to a motor vehicle comprising such a door structure device.
• plastic trunk doors are generally equipped with steel reinforcements to compensate for the lack of intrinsic stiffness of the plastic material.
• These metal reinforcements generally include several heavy assembled elements which have geometric defects causing deformations on the trunk door during assembly.
• the object of the invention is to provide a trunk structure device for a motor vehicle overcoming the above drawbacks and improving the structural elements known from the prior art.
• the invention makes it possible to produce a structure device or a trunk door which is simple, light, reliable and the manufacture of which requires a reduced number of manufacturing steps.
• the present invention consists of a door structure device for a motor vehicle trunk comprising: a lower part intended to be covered with an exterior body panel and an upper part forming a rear window frame intended for be covered by a rear window frame; and also comprising at least one hollow reinforcing element extending from the lower part to the upper part; the hollow reinforcing element being produced by fluid-assisted injection.
• said device is made in one piece by injection of plastic material.
• the at least one hollow reinforcing element projects relative to the lower part and / or to the upper part.
• the at least one hollow reinforcing element projects from the outside of the lower part and / or from the upper part.
• the hollow reinforcing element has a rectangular section, preferably a square section.
• the at least one hollow reinforcement element forms a peripheral frame at least partially framing the rear window frame and / or in which the at least one hollow reinforcement element forms a peripheral frame at least partially framing the device.
• said device also comprises a continuous fixing track comprising a face of the at least one hollow reinforcing element; said fixing track being arranged on the interior side of the device.
• the invention relates to a method for producing a device according to the first aspect of the invention.
• the method includes a plastic injection step for the production of the lower part and the upper part.
• the method also includes a fluid assisted plastic injection step for the production of the at least one hollow reinforcing element extending from the bottom to the top.
• the fluid used for injecting the at least one hollow reinforcing element is a gas or a liquid, preferably water.
• an additional reinforcement means made of plastic material is attached, in particular attached by overmolding, to the rest of the device.
• the invention relates to a trunk door of a motor vehicle comprising a vehicle trunk door structure device according to the first aspect of the invention and a rear window frame. Said rear window frame overlaps the rear window frame of said device. The superposition of the rear window frame and the device forms a second hollow body extending over at least a portion of the length of the at least one hollow reinforcement element.
• said trunk door comprises a trunk door structure device according to the first aspect of the invention and at least one sealing element fixed to the at least one hollow reinforcing element.
• said trunk door comprises a trunk door structure device according to one of the first aspect of the invention and at least one additional plastic reinforcement means connecting the upper part to the lower part and comprising a hollow tube and overmolded fasteners at the longitudinal ends of the hollow tube.
• the invention relates to a motor vehicle body comprising a trunk door according to the first aspect of the invention.
• Said box comprises a sealing element being in contact with at least one hollow reinforcing element or with at least one fixing track when the boot door is closed.
• the invention relates to a vehicle, in particular a motor vehicle, comprising a door structure device for a vehicle trunk the first aspect of the invention or a motor vehicle body according to the fourth aspect of the invention.
• Figure 1 shows the outer side of an embodiment of a trunk door structure device of a motor vehicle.
• Figure 2 shows the outer side of an embodiment of a trunk door structure device according to Figure 1 on which is mounted a rear window frame.
• FIG. 3 represents the interior side of a trunk door structure device according to FIG. 1.
• Figure 4A shows a sectional view along a plane A of the part of a trunk door according to an embodiment of the invention comprising the device according to Figure 3 and a seal.
• Figure 4B is a diagram of a sectional view along a plane B of the trunk door in an embodiment where the cooperation between the upper part and the scope frame forms a second hollow body.
• FIG. 5 represents an embodiment of an additional reinforcing element which can be mounted on a device according to FIG. 1.
• FIG. 6 is an exploded view of an embodiment of a trunk door of a vehicle according to an embodiment of the invention.
• FIG. 7 represents an embodiment of a vehicle comprising a trunk door.
• lower part the part lying down relative to a vehicle when the trunk door 1 1 is in the closed position.
• upper part means the part located upward relative to a vehicle when the trunk door 1 1 is in the closed position.
• the lower and upper parts are respectively below and above a lower edge of the rear window when the boot door is in the closed position.
• interior side the face of an element intended to be oriented towards the interior of the passenger compartment of a vehicle when the boot door is in the closed position.
• exit side designates the face of an element intended to be oriented towards the exterior of the passenger compartment of a vehicle when the boot door 1 1 is in the closed position.
• the concept of the invention lies in the incorporation of a hollow reinforcing element extending along a vehicle trunk door structure device to increase the rigidity of the structure device.
• the structural device then makes it possible to increase the inertia in the stressed sections.
• An example of a door structure device 1 for a motor vehicle boot is described below with reference to FIG. 1.
• the invention relates in particular to a device 1 intended to be covered to form a boot door 11 for a vehicle , especially for a motor vehicle.
• the device 1 can be a door casing or a trunk door structure element.
• the device 1 can be a boot lining, preferably a tailgate boot door.
• the device 1 comprises a first part constituting a support comprising a lower part 1 b extended upwards by an upper part 1 a.
• the lower part 1b is intended to be covered by a bodywork element.
• the upper part 1 has a rear window frame 4 intended to be covered by a rear window frame 6 of the vehicle trunk door.
• the device 1 further comprises at least one hollow reinforcement element 2.
• the at least one hollow reinforcement element 2 extends from the lower part 1 b to the upper part 1 a.
• the hollow reinforcing element 2 extends over the lower and upper parts.
• the hollow reinforcing element 2 may consist of a longitudinal element disposed continuously or discontinuously on the periphery of the device 1 so as to stiffen the device 1.
• the at least one hollow reinforcing element 2 create a belt on at least a portion of the periphery of the device 1, this belt connecting the lower part 1 b and the upper part 1 a.
• at least one portion is meant here at least 25% or at least 50%.
• the at least one hollow reinforcing element 2 can extend at a distance from the lateral, lower or upper edges of the device 1 which is between 1 cm and 20 cm, preferably between 5 cm and 15 cm.
• the at least one hollow reinforcement element 2 can extend longitudinally over a length of between 50 cm and 350 cm, preferably between 150 cm and 250 cm.
• the hollow reinforcing element 2 here acts as a stiffening beam.
• the use of plastic and the hollow shape of the reinforcing element make it possible to improve shock absorption, in particular impact between the boot door 1 1 comprising the device 1 and the vehicle body during the closing the boot door 1 1.
• the reinforcing element can extend linearly or longitudinally.
• the reinforcing element extends linearly over at least a portion of the contours of the support or over at least a portion of the contours of the assembly formed by the lower part 1 b and the upper part 1 a.
• the at least one hollow reinforcement element 2 can comprise, as illustrated in FIG. 1, at least two hollow reinforcement elements.
• the at least one hollow reinforcing element 2 can thus comprise discontinuities.
• the at least one hollow reinforcing element 2 thus extends continuously or semi-continuously.
• the hollow reinforcing element 2 thus extends so as to form at least partially a stiffening ring.
• the hollow reinforcing element 2 comprises at least a first lower portion disposed along the lower edge of the lower part 1b.
• the hollow reinforcing element 2 comprises at least a second upper portion disposed along the lateral edges of the support from the lower part 1 b to the upper part 1 a.
• the hollow reinforcing element 2 can extend along the upper part 1 a along the edges forming the rear window frame 4.
• the device 1 comprises two hollow reinforcing elements arranged symmetrically on the support.
• the two symmetrical hollow reinforcing elements can join along the lower edge of the lower part 1b and / or can join along the top part 3 of the rear window frame 4.
• top part here is meant the upper edge of the upper part 1a or of the frame of the rear window.
• the hollow reinforcing element 2 has a section of parallelepiped shape and extends longitudinally on 4 faces.
• the hollow reinforcing element 2 has a square shape.
• the reinforcing element can therefore be presented as a hollow surrounded by 4 faces and extending longitudinally.
• the length of the faces 2a, 2b can vary between 0.5 cm and 5 cm, preferably between 2 cm and 4 cm inclusive.
• the cross section of the hollow reinforcing element can be between a circle of A mm in diameter and a circle of B mm in diameter.
• the geometry of the cross section of the reinforcing element can be constant along the reinforcing element. Alternatively, the geometry of the cross section of the reinforcing element can evolve along the reinforcing element.
• one of the faces 2a of the section of the hollow reinforcing element 2 can be intended to receive a sealing element 7.
• the face 2a of the section intended to receive the element sealing 7 is the face 2a oriented towards the inside of the support.
• the other three faces 2b preferably extend projecting from the outside of the support.
• the face 2a of the at least one hollow reinforcing element 2 oriented towards the interior side of the support thus makes it possible to define a fixing track 71 for at least one sealing element 7 in one piece.
• This arrangement also makes it possible to better stabilize the sealing element 7 such as a sealing gasket in order to guarantee the tightness of the trunk door 1 1, whatever the temperature.
• the connection track 71 makes it possible to connect two hollow reinforcement elements 2 so as to form a continuous track around the support.
• the fixing track allows the installation of a sealing element 7 in one piece.
• the hollow reinforcing element 2 is discontinuous and the fixing track 71 is continuous.
• the fixing track 71 can extend along the hollow reinforcing element 2 and between the discontinuities of said hollow reinforcing element 2.
• the fixing track 71 may comprise bands between the discontinuities of the at least one hollow reinforcing element 2. These bands allow the continuity of the fixing track 71 to allow the fitting of a sealing element 7 of a in one piece.
• the sealing element 7 in one piece advantageously allows better performance and a reduction in manufacturing time.
• the fixing track 71 can thus be partially produced by molding during the manufacture of the device 1. Thus, no additional manufacturing step is added.
• the lower part 1b of the support comprises an interior side and an exterior side.
• the outer side is intended to be covered by superposition of an exterior body panel 8.
• the lower part 1b further comprises stiffening elements (5a, 5b, 5c). These stiffening elements are obtained by molding plastic material to produce the support. These stiffening elements allow the attachment of functional members.
• At least one first stiffening element 5a authorizes the fixing of a locking device.
• At least one second stiffening element 5b authorizes the fixing of a lighting device.
• a third stiffening element 5c allows the attachment of a wiper device.
• the upper part 1 a of the support forms a rear window frame 4.
• This upper part 1 a is intended to be covered by superposition of a rear window frame 6.
• the window frame and the exterior body panel 8 are intended to be arranged adjacent to the same side of the device 1, preferably touching each other.
• the hollow reinforcing element 2 is produced by fluid-assisted injection.
• the fluid used to create the hollow reinforcing element 2 can be a gas or a liquid such as water.
• the device 1 comprising the support and the hollow reinforcing element 2 is produced in a single piece.
• the device 1 is produced by injection of plastic material and the hollow of the hollow reinforcing element 2 is produced by injection assisted by fluid.
• the invention thus overcomes the steps of fixing metallic elements to the support to stiffen a trunk door lining 11.
• the method for the manufacture of such a device 1 for the vehicle trunk door structure may include a plastic injection step for producing the support or for producing in a single piece the lower part 1 b and the upper part 1 a.
• the method also includes a fluid-assisted plastic injection step for producing the at least one hollow reinforcing element 2. This step can be part of the previous injection step.
• the invention also relates to a trunk door 11 for a vehicle, in particular for a motor vehicle.
• the trunk door 11 comprises a device 1 for the door structure as described above.
• the trunk door 11 also includes a rear window frame 6 and an exterior body panel 8.
• the bezel frame 6 overlaps the rear window frame 4 of the device 1.
• the bezel frame 6 covers the device 1 on the outside of the device 1.
• the frame 6 and the device 1 form a second hollow body 61.
• the bezel frame 6 is designed to cooperate with the outer side of the upper part so as to create a second hollow body 61 between the bezel frame 6 and the upper part 1a.
• the second hollow body 61 advantageously extends along the hollow body 21 formed by the hollow reinforcing element 2.
• the trunk door 11 thus comprises a double hollow body increasing the rigidity of the trunk door 11.
• the structural device then allows to increase the inertia in the stressed sections compared to a similar steel device without changing these external dimensions.
• the top part 3 of the rear window frame 4 is intended to receive at least one articulation hinge.
• the articulation hinge makes it possible to link the boot door 11 in rotation with the vehicle frame.
• the other side of the top part 3 can be intended to receive an element improving the aerodynamics of the vehicle such as a spoiler 10 or a spoiler.
• the trunk door 1 1 may include an element for improving the aerodynamics of the vehicle such as a spoiler 10 or a spoiler.
• the trunk door 1 1 comprises an exterior body panel 8.
• the exterior body panel 8 is arranged so as to cover the lower part 1 b of the structural device.
• the exterior body panel 8 can be arranged adjacent to the rear window frame 6.
• the exterior body panel 8 can be disposed substantially flush with the rear window frame 6.
• the trunk door 1 1 may comprise a sealing element 7 or a sealing gasket fixed to the hollow reinforcing element 2 or to the fixing track 71 of the device.
• the sealing element 7 consists of a single piece in order to simplify the steps of manufacturing said trunk door 1 1.
• the sealing element 7 is fixed on the inside of said device, preferably on the fixing track 71.
• the trunk door 1 1 comprises at least one additional reinforcement means 9 made of plastic.
• FIG. 5 An example of such an additional plastic reinforcement means 9 is illustrated in FIG. 5.
• This additional plastic reinforcement means 9 comprises a hollow longitudinal tube 9a.
• the hollow longitudinal tube 9a is a fluid-assisted injected part in order to generate directly during injection, a hollow body, while making it possible to obtain a part of sufficient stiffness.
• the additional plastic reinforcement means 9 may also include fixing elements 9b, 9c at the longitudinal ends of the hollow tube 9a. These fastening elements 9b, 9c preferably comprise orifices opening out to cooperate with nuts or screws. In this embodiment, the additional reinforcement means 9 is screwed onto the device 1 according to the invention.
• the fastening elements 9b, 9c are molded onto the hollow longitudinal tube 9a by injection of plastic material.
• the additional plastic reinforcement means 9 can thus consist of several plastic parts of sufficiently high stiffness and without the use of metal parts.
• the additional plastic reinforcement means 9 can be arranged on the inside of the door structure device.
• the additional plastic reinforcement means 9 makes it possible to reinforce the rigidity and the resistance to irreversible deformation of the boot door 11.
• the at least one additional plastic reinforcement means 9 extends from the lower part 1 b of the device 1 to the upper part 1 a of the device 1.
• the at least one additional plastic reinforcement means 9 is fixed to the upper part 1a and / or to the lower part 1b of the device by the fixing elements 9b, 9c present at the longitudinal ends of the hollow tube 9a.
• the additional plastic reinforcement means 9 is preferably overmolded on the upper part 1 a and / or on the lower part 1 b of the device.
• the fastening elements 9b, 9c then preferably comprise through orifices or other conformations allowing their overmolding on the rest of the device 1.
• the advantage of such an additional plastic reinforcement means 9 is to produce a part in a single operation.
• Such additional plastic reinforcement means produced by molding also has fewer geometric defects than a similar piece made of steel.
• the use of plastic makes it possible to refrain from any anti-corrosion treatment of the part compared to a similar steel part.
• the additional reinforcement means 9 and the hollow reinforcement element 2 allow the trunk door 1 1 better geometric stability and better temperature resistance due to the positioning of the additional plastic reinforcement means 9 and the hollow reinforcement element 2 on the device 1.
• the trunk door 1 1 may also include at least one lighting device at least one wiper device or at least one locking device inserted or fixed in the stiffening elements of the lower part 1 b.
• the present invention also consists of a motor vehicle body comprising a trunk door structure device as described above.
• the vehicle body may include a seal arranged so as to abut with the at least one hollow reinforcing element 2 or with the fixing track 71 when the trunk door 1 1 is in the closed position.
• the invention also consists of a vehicle 12 comprising a device 1 for the trunk door structure as described above, comprising a trunk door 1 1 as described above or a vehicle body as described above .
• the vehicle 12 comprises a trunk door 1 1 comprising a device 1 according to the invention, a rear window frame 6 and an exterior body panel 8.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Superstructure Of Vehicle (AREA)
• Seal Device For Vehicle (AREA)
• Injection Moulding Of Plastics Or The Like (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=63145111

Family Applications (1)

Country Status (7)

Families Citing this family (3)

Family Cites Families (24)

• 2018
  • 2018-07-05 FR FR1856195A patent/FR3083484B1/fr active Active
• 2019
  • 2019-06-28 CN CN201980040823.8A patent/CN112351900A/zh active Pending
  • 2019-06-28 EP EP19733799.1A patent/EP3817936A1/fr active Pending
  • 2019-06-28 JP JP2021500036A patent/JP7458364B2/ja active Active
  • 2019-06-28 WO PCT/EP2019/067337 patent/WO2020007727A1/fr active Application Filing
  • 2019-06-28 BR BR112020025703-6A patent/BR112020025703A2/pt unknown
  • 2019-06-28 KR KR1020217003774A patent/KR20210028690A/ko not_active Application Discontinuation

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