Classifications

• • 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
  • B62D25/20—Floors or bottom sub-units
  • B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
  • B62D25/2036—Floors or bottom sub-units in connection with other superstructure subunits the subunits being side panels, sills or pillars
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D27/00—Connections between superstructure or understructure sub-units
  • B62D27/02—Connections between superstructure or understructure sub-units rigid

Definitions

• TITLE Sub-assembly of bodywork elements of a motor vehicle, comprising two concurrent sheets between which is provided a reserve for receiving a sealing member
• the present invention relates to the field of the assembly between two constituent sheets of bodywork elements of a motor vehicle.
• the invention relates more specifically to the methods of interposing a sealing member between two said sheets which are approached along concurrent planes.
• the automotive field it is common to assemble two sheets constituting body elements of a motor vehicle together.
• the sheets are mechanically assembled to each other via various mechanical fastening means commonly used in the automotive field, such as for example by crimping, by electrical spot welding or by riveting.
• a seal is also provided between the sheets via a sealing member interposed between them in a zone of docking of the sheets against each other.
• the sealing member is for example formed of a bead of deposited or sprayed resin, or for example also of a heat-expandable insert.
• a reserve for receiving the sealing member is then provided between the sheets.
• the configuration and / or orientation of the sheets considered in their docking zone can be a source of difficulty in forming a reserve suitable for receiving the sealing member by providing an effective and lasting seal between the sheets. , and / or to allow a implantation of the sealing member between the sheets easy to achieve by an operator. It emerges from this that research efforts are to be developed according to the specific cases of the sealed junction of the sheets together.
• the subject of the invention is a sub-assembly of bodywork elements of a motor vehicle, as well as a motor vehicle comprising at least one sub-assembly of bodywork according to the invention.
• the invention falls within a specific framework of constraints, according to which two constituent sheets of respective bodywork elements of a motor vehicle are docked one against the other via concurrent docking walls which they respectively comprise. .
• a reserve for receiving a sealing member is provided between the mating walls of the sheets in their mating zone against one another.
• the relative inclination between the respective docking walls of the sheets can make it difficult to form the reserve in a configuration suitable for receiving the sealing member between the sheets.
• a cramped configuration of the reserve makes the implantation of the sealing member difficult or unsuitable.
• a configuration of the reserve leaving a substantial space between the sheets in their docking zone involves the formation of a sealing member of substantial volume which is therefore expensive.
• it is also to take into account their environment which is often encumbered by other bodywork elements of the vehicle and / or which can hinder the efficient and lasting implantation of the component. sealing inside the reserve.
• the configuration of the reserve can be decisive on the choice of the structure and the implantation methods of the sealing member to be used, and therefore on the costs incurred for its implantation inside the reserve. It should be noted in particular that to form the sealing member, the use of a heat-expandable insert is more expensive and restrictive than that of a bead of resin deposited or sprayed.
• the main aim of the invention is to overcome, alone or in combination, the difficulties associated at least with the constraints previously referred to in order to provide an efficient and lasting sealed junction between the sheets in their docking zone.
• an object of the invention is to propose a solution for obtaining at lower costs an efficient and lasting sealed junction between the sheets in their docking zone, in the context of severe economic competition in the automotive field.
• Another object of the invention is to propose the formation of a said reserve, while taking into account the behavior of the sheets in the event of an impact withstood by the vehicle.
• the aims of the present invention are achieved individually or in combination by applying the following provisions.
• a sub-assembly of bodywork elements of a motor vehicle according to the invention comprises two sheets docked one against the other by having respective docking walls which are concurrent with one another.
• a reserve accommodating a sealing member is provided between the docking walls of the sheets in their docking zone against one another.
• said reserve is delimited between the docking wall of a first of the sheets and a partition formed on the docking wall of the other second of the sheets.
• the partition extends at least in part between the respective docking walls of the first sheet and of the second sheet, forming a member for reducing the space formed between them.
• the partition is flush with the docking wall of the first sheet and extends at a distance from the latter by delimiting between them a bottom of the reserve. Then the partition bends by delimiting with the docking wall of the first sheet a flaring of the reserve leaving an outlet for introducing the sealing member into the reserve.
• the docking wall of the first sheet and the partition have profiles of substantially complementary shapes.
• the profile of the partition oriented towards the docking wall of the first sheet has a concave configuration.
• the partition is bent at the outlet of the reserve which houses the sealing member, and extends away from the docking wall of the first sheet, until it has an orientation in accordance with that concurrent with the docking wall of the second sheet relative to the docking wall of the first sheet.
• the sealing member is formed from a bead of resin formed partially inside the reserve near its outlet.
• a bead of resin such as mastic in particular, can be deposited or preferably sprayed to facilitate the implantation of the sealing member inside the reserve, in particular at its outlet.
• the partition is formed of a wall which comprises an indentation formed by stamping of the docking wall of the second sheet.
• said imprint is arranged as a shoe for supporting the second sheet against the first sheet under the effect of a thrust exerted against the second sheet towards the first sheet.
• the docking face of the first sheet is provided with a reinforcing element extending at least partly opposite the shoe.
• a reinforcing element is for example formed of a plate affixed against the docking face of the first sheet.
• Said plate is capable of comprising a member for fixing to the first sheet and / or to at least one other surrounding bodywork element.
• the subject of the invention is also a motor vehicle equipped with at least one sub-assembly of bodywork elements in accordance with the invention.
• the first sheet forms a floor element of the vehicle and the second sheet is formed of a connection between two butted side rails of the vehicle.
• FIG. 1 is a partial illustration in profile and in section of a sub-assembly of bodywork elements of a motor vehicle according to an embodiment according to the invention.
• FIG. 2 is a partial perspective illustration of an example of application of a sub-assembly of bodywork elements according to the invention, comprising a floor element docked against a connection of side members of a vehicle automobile.
• FIG. 3 is a perspective illustration of an enlarged detail of the sub-assembly of bodywork elements shown in the figure.
• a subset of bodywork elements of a motor vehicle comprises two sheets 1, 2 approached against each other via walls converging docking 1a, 2a which they respectively comprise.
• said docking walls 1a, 2a are oriented along respective planes P1, P2 which are concurrent.
• a reserve 3 is made between the docking walls 1 a, 2a of the sheets 1, 2 to house a sealing member 4 between the sheets 1, 2 in their docking zone Z1.
• the sealing member 4 is advantageously formed of a bead of resin, as shown in Figures 1 and 3.
• the reserve 3 is formed between the docking wall 1a of a first sheet 1 and a partition 5 specifically. provided for this purpose on the docking wall 2a of the other second sheet 2.
• the partition 5 is advantageously integrated into the docking wall 2a of the second sheet 2 by being obtained from its material by stamping.
• the partition 5 is thus formed from a wall of the cavity 6 formed by stamping the docking wall 2a of the second sheet 2, said wall of the cavity 6 being oriented towards the first sheet 1.
• the partition 5 s 'extends between the docking walls 1 a, 2a of the sheets 1, 2, forming in their docking zone Z1 a member for reducing the space which it defines between them.
• the sealing member 4 can therefore advantageously be formed from a bead of resin. A high-performance sealed junction between the docking walls 1 a, 2a of the sheets 1, 2 in their docking zone Z1 against one another is thus obtained at lower costs.
• the shaping by stamping of the partition 5 allows to give it a profile whose conformation takes into account on the one hand the conformation of the profile of the docking wall 1a first sheet 1 oriented opposite the partition 5, and d 'on the other hand the possible assembly clearances between the sheets 1, 2 and / or between the sheets 1, 2 and other surrounding body elements.
• the profile of the partition 5 is configured by limiting the volume delimited at the bottom of the reserve 3 and by giving its outlet 7 a conformation suitable for receiving the bead of resin 4. This makes it possible to avoid the introduction of an inopportune excess of resin inside the reserve 3 and to facilitate the implantation of the resin near the outlet 7 of the reserve 3, in particular by spraying the resin in one. quantity and / or a controlled path, in particular via a manipulator.
• the profile of the docking face 1a of the first sheet 1 considered in said docking zone Z1 has a rounding 8 defined by a first radius R1 and the profile of the partition 5 significantly presents several zones d 'inflection In1, In2.
• the partition 5 From the contact area of the sheets 1, 2 against each other, the partition 5 extends progressively, flush with the face of the docking wall 1 a of the first sheet 1 in contact with the wall d 'docking 2a of the second sheet 2. Then the partition extends away from the docking wall 2a of the second sheet 2, leaving at the bottom of the reserve 3 a small gap between the partition 5 and the face of docking 1a of the first sheet 1, such a gap taking into account in particular the assembly clearances.
• the partition 5 has a first inflection In1 following a second radius R2, the value of which is substantially equal to that of the first radius R1, increased by a value taking into account the difference between the partition 5 and the docking wall 1a of the first sheet 1.
• the concave shape of the profile of the docking wall 1a of the first sheet 1 is oriented opposite the convex shape of the partition 5, giving the bottom of the reserve 3 a tapered conformation of low volume.
• the partition 5 has a second inflection In2 following a third radius R3 of a greater value than that of the second radius R2, by leaving between the partition 5 and the docking wall 1a of the first sheet 1 a flare delimiting the outlet 7 of the reserve 3 according to a dimension adapted to the reception of the resin bead 4.
• an acceptable gap between the partition 5 and the docking face 1a of the first sheet 1 at the outlet 7 of the reserve 3 is of the order of 3 mm (three millimeters) plus or minus 15%.
• the partition 5 is extended from the outlet 7 of the reserve 3 until it presents an orientation in accordance with the orientation of the docking wall 2a of the second sheet 2 relative to the docking wall 1a of the first sheet 1.
• the formation of the partition 5 by stamping is preferred because it makes it possible, at lower costs, to take into account the behavior of the sheets 1, 2 in the event of an impact suffered by the vehicle.
• This provides an additional function to the footprint 6 which is configured as a shoe 9 oriented towards the docking wall 1a of the first sheet 1. Such a shoe 9 is able to bear against the docking wall 1a of the first. sheet 1 in the event of an impact on the vehicle.
• a thrust component can be developed against the second plate 2 towards the first plate 1, and cause a deflection and / or a pushback of the second plate 2 towards the first plate 1.
• the support grip of the shoe 9 against the docking wall 1a of the first sheet 1 then participates in the absorption of the energy developed by said thrust component, in the context of securing the vehicle in the event of an accident.
• a sub-assembly of bodywork elements falling within the scope of the invention comprises at least one said first sheet 1 forming a rear floor element 10 of the vehicle, and one said second sheet 2 forming a connection 11 between two side members 12a, 12b of the vehicle abutting one another.
• the side members 12a, 12b and the connection 11 extend essentially along the longitudinal direction L1 of extension of the vehicle and the floor element 10 bears against the connection 11 of side members 12a, 12b along the transverse direction T1 of extension of the vehicle. vehicle.
• the connection 11 of side members 12a, 12b is fixed to the floor 10, such as for example at least via a fixing wing 13 integrated into the connection 11 of side members 12a, 12b.
• the connector 11 of side members 12a, 12b comprises said recess 6 at its docking wall 2a against the docking wall 1a of the floor element 10.
• the wall of the recess 6 oriented in the direction of the docking element.
• floor 10 is part of the partition 5 delimiting the reserve 3 for receiving the sealing member 4 together with the docking face 1a of the floor element 10.
• the docking wall 1a of the floor element 10 is coated with a reinforcing element 14 disposed opposite the shoe 9 formed by the recess 6 which comprises the connector 11 of side members 12a, 12b. .

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Body Structure For Vehicles (AREA)
• Hydraulic Motors (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=67441280

Family Applications (1)

Country Status (4)

Families Citing this family (1)

Family Cites Families (11)

• 2019
  • 2019-02-21 FR FR1901757A patent/FR3093063B1/fr active Active
• 2020
  • 2020-02-17 EP EP20710229.4A patent/EP3927600A1/de active Pending
  • 2020-02-17 WO PCT/FR2020/050281 patent/WO2020169907A1/fr unknown
  • 2020-02-17 CN CN202080015716.2A patent/CN113453976A/zh active Pending

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