Source: https://patents.google.com/patent/WO2017032935A1/en
Timestamp: 2019-03-25 14:50:55
Document Index: 691582525

Matched Legal Cases: ['arts 1', 'arts 1', 'art 1', 'art 1', 'arts 1', 'arts 1', 'arts 7', 'arts 1']

WO2017032935A1 - Reinforcing part with a cellular structure for a motor vehicle - Google Patents
Reinforcing part with a cellular structure for a motor vehicle Download PDF
WO2017032935A1
WO2017032935A1 PCT/FR2016/051947 FR2016051947W WO2017032935A1 WO 2017032935 A1 WO2017032935 A1 WO 2017032935A1 FR 2016051947 W FR2016051947 W FR 2016051947W WO 2017032935 A1 WO2017032935 A1 WO 2017032935A1
PCT/FR2016/051947
Loic Bezeault
Xavier DUHEM
2015-08-27 Priority to FR1557981 priority Critical
2015-08-27 Priority to FR1557981A priority patent/FR3040357A1/en
2016-07-27 Application filed by Renault S.A.S. filed Critical Renault S.A.S.
2017-03-02 Publication of WO2017032935A1 publication Critical patent/WO2017032935A1/en
Reinforcing part with a cellular structure for a motor vehicle. The reinforcing part (1) for a motor vehicle comprises a metal support (2), and a cellular structure (3), especially a honeycomb structure, which is made of a composite material and joined to the metal support.
honeycomb structural reinforcement part for automotive vehicle
The invention relates to the field of automobile, and more particularly to reinforcing parts. The invention concerns more particularly a reinforcement piece for a motor vehicle.
There is a need to reduce the entire body of a motor vehicle for better consumption, or better battery life, said motor vehicle.
More vehicle is lighter, it is possible to reduce the consumption of thermal power unit or increase battery life in a version with an electric powertrain. This approach lightening motor vehicles can reduce engine size, battery size at constant volume of architecture or a reduction of the volume.
The standard body of a vehicle is complicated by the large number of sheet metal parts and contact connections and assembly. Current solutions do not allow to minimize the mass of the vehicle, and remain in the world of metal materials. The assembly of the many metal parts complicates the assembly with: welding, riveting or clinching.
The body of a vehicle is subjected to mechanical and acoustic held such that the overall stiffness, torsional stiffness, a 1 eigenmode (modal frequency).
The same case can be submitted in case of accident in a side impact, rear impact, rollover, and held under the constraints (such as seats and anchorage belts). To meet the constraints of the motor vehicle field, you have a solid case with steeper areas and areas
locally reinforced.
There is therefore a need to form new reinforcing parts serving firstly to reduce the motor vehicle, and secondly to ensure the reinforcement functions and / or components, assembly to the vehicle body automobile.
The purpose of the present invention is to provide a solution which overcomes all or part of the disadvantages listed above. Tends towards this goal including through a reinforcing member for a motor vehicle comprising a metal support and in that it comprises a honeycomb structure, including honeycomb formed by a composite material and joined to the metal support. In particular, the metal support comprises assembly elements of at least one member.
In particular, the connecting elements are configured so as to allow the fitting of a cross member of the dashboard of the motor vehicle and / or a hinge side door of the motor vehicle.
Advantageously, the composite material comprises a resin matrix including thermosetting or thermoplastic, and fibers, in particular glass fibers or carbon fibers.
In one embodiment, the honeycomb structure includes two sets of cells extending from a common basis in opposite directions.
For example, the honeycomb structure is shaped so as to define at least two regions of different stiffness.
According to one implementation, the metal support is shaped so as to marry separate parts of faces of the honeycomb structure.
The invention also relates to a motor vehicle comprising at least one reinforcing part as described. In particular, said at least one reinforcing piece is mounted to said motor vehicle so as to form a pillar reinforcement panel or pillar of the motor vehicle.
In one embodiment, the motor vehicle comprises a front leg, a pillar, a front side door hinged to the front leg, a rear side door hinged to the middle foot and a cross member of the dashboard, said front foot being provided:
- a first patch as described, an upper hinge of the front side door of the motor vehicle being mounted on the bracket of the first patch and the cross member of the dashboard is mounted on the bracket of the first patch,
- a second patch as described, a lower hinge of the front side door of the motor vehicle being mounted on the bracket of the second patch, and the middle leg being provided with:
- a third reinforcing member as described, an upper hinge of the rear side door of the motor vehicle being mounted on the bracket of the third piece of reinforcement, - a fourth reinforcing member as described, a hinge bottom of the rear side door of the motor vehicle being mounted on the bracket of the fourth piece of reinforcement. The invention also relates to a method of assembling a portion of a motor vehicle, characterized in that it comprises the following steps:
- a provision of a reinforcing member as described, - a formation of a structural member of a motor vehicle comprising said reinforcing piece provided, in particular said shaped structural member is a front leg or environment of the motor vehicle.
In particular, the structural element forming step includes providing a body side and the provision of a body side liner, said reinforcing piece provided first being joined to the body side liner and the body side is mounted on the assembly formed by the assembly of the reinforcing member to the body side liner. The invention also relates to a method of making a reinforcing member as described, characterized in that it comprises one of the honeycomb structure forming step in a mold.
In particular, the method comprises a step of placing the metal substrate in the mold prior to forming the honeycomb structure or a bonding step of the metal support on the honeycomb structure after its formation and release from the mold. Brief description of drawings
Other advantages and characteristics will match more clearly from the following description of specific embodiments of the invention given as non-limiting examples and shown in the accompanying drawings, wherein:
- Figures 1 and 2 show a first type of reinforcing member viewed from two different perspectives,
- Figures 3 and 4 show a second type of reinforcing member viewed from two different perspectives,
- Figure 5 illustrates a lateral portion of vehicle body provided with reinforcing parts,
- Figure 6 illustrates the Figure 1 cutting plane passing through the line C1 and parallel to the XY plane section,
- Figure 7 illustrates the Figure 1 cutting plane passing through the line C2 and parallel to the XY plane section,
- Figure 8 illustrates a cutting plane of Figure 3 through the line C3 and cut parallel to the XY plane,
- Figure 9 illustrates a variant of Figure 6 incorporating a sealing rabbet.
DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION In Figures 1-9 there is shown an XYZ orthonormal. This mark corresponds to the repository of the motor vehicle when the latter rests on the ground, and wherein X is oriented rearwardly of the vehicle and substantially parallel to a longitudinal axis of the vehicle, Y is oriented towards a lateral side of the vehicle and substantially parallel to a lateral axis of the vehicle, and Z is oriented upward and substantially parallel to a vertical axis of the vehicle. In this sense, to Figures 1 to 9, the XYZ reference illustrates a preferred arrangement of which is shown when said figures what is shown is mounted to said motor vehicle.
The present invention provides a new type of reinforcing member for a motor vehicle, in particular a reinforcing piece for front leg or foot middle or rear of the motor vehicle. As illustrated in Figures 1 to 4, the one reinforcing member for a motor vehicle comprises a metal substrate 2 and a cell structure 3, including honeycomb formed by a composite material and joined to the metal support 2.
Although the honeycomb structure 3 honeycomb is preferred, the section of the cells 3 of the honeycomb structure in a substantially cross-sectional plane perpendicular to the cell extension direction may be chosen from: a hexagon, pentagon, octagon, etc.
1 this reinforcing member comprises a front assembly configuration to the rest of the vehicle where it behaves as a single piece. In other words, the assembly of the honeycomb structure 3 to the metal support 2 is such that any displacement of the honeycomb structure 3 requires the same movement to the metal support 2.
The honeycomb structure 3 enables a local energy absorption function and present a stiffness suitable for the intended use of the patch 1. The metal support 2 may advantageously comprise connection elements 4a, 4b of at least one member. In fact, it is understood here that the metal support 2, in addition to its contribution to stiffness function in the reinforcing member 1 allows the use of this stiffness for joining / fixing members such as a door or a hinge crosspiece dashboard. In other words, the connecting members 4a, 4b can be configured to allow the fitting of a cross dashboard of the motor vehicle (item 4a) and / or a hinge side door of the motor vehicle (item 4b). Fasteners may be selected from inserts, nuts or bolts may be crimped, welded or glued to a corresponding portion of the metal support 2.
In Figures 1 and 2, the one reinforcing member comprises connecting elements 4a to assemble a cross dashboard of the motor vehicle and of the connecting elements 4b to set an upper hinge side door of the motor vehicle.
Figures 3 and 4, the reinforcing piece comprises only connecting elements 4b for attaching a lower hinge side door so that one reinforcement part is used in addition to that of Figures 1 and 2 for mounting the same front side door of the motor vehicle. Alternatively, this reinforcing member can be used twice for mounting upper and lower hinge of a rear side door of the motor vehicle.
It is then understood that the invention also relates to a motor vehicle comprising at least one reinforcing piece 1 as described herein. In particular, as illustrated in Figure 5, said at least one reinforcing piece 1 a, 1 b, 1c, 1d is mounted to said motor vehicle so as to form a pillar reinforcement front 5 (reinforcing parts 1a , 1 b) or pillar or rear 6 (1 reinforcing parts c, 1 d) of the motor vehicle in the present description, a front leg 5 is a member on which is articulated a front side door of the motor vehicle, and a pillar 6 is a member on which is articulated a rear side door of the motor vehicle.
In the example of Figure 5, the reinforcing parts 1 a, 1 b, 1 c, 1 d are intended to be mounted between a body side 8 and a body side liner 7. The body side liner 7 corresponds to a structural member disposed on the inner side of the motor vehicle, and the side frame 8 corresponds to a body panel made visible from outside the vehicle due to its arrangement at the outer side of the motor vehicle.
Always in the example of Figure 5, the front leg 5 comprises two reinforcing pieces 1 a, 1 b. 1 the reinforcing piece is of the type of Figures 1 and 2, i.e. it comprises the elements 4a, 4b required for assembly of a crosspiece of the dashboard and an upper door hinge front side of the motor vehicle. The reinforcing part 1b is of the type shown in Figures 3 and 4 and comprises the necessary elements for attaching a lower hinge of the front side door of the motor vehicle. Meanwhile, the middle foot 6 also comprises two reinforcing pieces 1 c, 1 d respectively provided with elements for fastening an upper hinge and a lower hinge of a rear side door of the motor vehicle. In other words, the motor vehicle may have front foot 5, a pillar 6, a hinged front side door on the front foot 5 (not shown), a rear side door hinged to the pillar 6 (not shown) and a cross member dashboard (not shown). In this case, said front foot 5 is provided with: a first patch 1 has, as described, an upper hinge of the front side door of the motor vehicle being mounted on the bracket of the first reinforcement part 1a and the cross member of the dashboard is mounted on the metal support 1 of the first reinforcement piece; and a second patch 1 b as described, a lower hinge of the front side door of the motor vehicle being mounted on the bracket of the second patch 1 b. Furthermore, the middle foot 6 is provided with: a third piece of reinforcement 1 c as described, an upper hinge of the rear side door of the motor vehicle being mounted on the bracket of the third reinforcement component 1 c; and a fourth reinforcement component 1 d as described, a lower hinge of the rear side door of the motor vehicle being mounted on the bracket of the fourth piece of reinforcement 1 d. In Figure 5, the body side 8 at the front foot 5 has been removed to visualize the reinforcing parts 1 a and 1 b, while the body side 8 at the middle foot 6 is clearly visible.
The body side 8 may be formed by several distinct elements.
6 illustrates a sectional view according to line C1 when the reinforcing piece 1 of Figure 1 is installed in the motor vehicle, that is to say mounted between the body side 8 and the body side liner 7 . 7 illustrates a sectional view according to line C2 when the reinforcing piece 1 of Figure 1 is installed in the motor vehicle, that is to say mounted between the body side 8 and the body side liner 7.
8 illustrates a sectional view according to line C3 when the reinforcing piece 1 of Figure 3 is installed in the motor vehicle, that is to say mounted between the body side 8 and the body side liner 7 .
In particular, to allow the attachment of a door hinge assembly elements 4b visible in Figures 1, 3, 7 and 8 may comprise two nuts (or bolts) 9a, 9b fixed on a corresponding portion of the metal support 2. the fixing nuts (or bolts) 9a, 9b may be achieved by welding or crimping. Preferably, the connecting element 4b is nut type whose portion including an internal thread extends from an inner face of the metal support 2 towards the interior of the cellular structure 3. Advantageously, to allow the attachment of a cross dashboard, the assembly of elements 4a (visible in figures 1, 2 and 6) comprise drums 10 allowing passage of an elongated element participating in the assembly of the transom panel. In Figures 1 and 2, the drums 10 are three in number, the first and second 10a drums, 10b through a first portion 1 1 of the metal support 2 and the honeycomb 3 and a third shaft 10c through a second portion 12 the metal support 2 forming a lateral flange of the metal support 2, which is not in contact with the honeycomb structure 3. the first and second parts 1 January, 12 of the metal support 2 are preferably included in distinct planes substantially parallel to each but . Preferably, the metal support 2 comprises at least three distinct sides each in contact with a corresponding face of the honeycomb structure 3, and preferably the side wing of the second portion 12 extends from one side of the metal support 2 in contact with the honeycomb structure 3. This allows to ensure adequate retention of the metal support 2 to the honeycomb structure 3.
More generally, the metal support 2 may be shaped to conform separate parts of faces of the cellular structure 3. This allows to have an assembly of geometric respect of the support 2 on the structure 3 via at least two sides of the support, here three bearing faces (the preferred maximum). The metal support 2 thus shaped has a better structural own outfit (cares corners, flanges).
Figures 6 to 8 show sectional views according to the XY plane when the one reinforcing member is installed in the motor vehicle. In these figures, one can see that the honeycomb structure 3 comprises two sets of cells 12a, 12b extending from a common base 13 in opposite directions. Alveolar sets can be of different designs to meet the constraints of different deformation. By the implantation of the reinforcing part substantially in extension of a fender liner with which transit the efforts of a collision of the vehicle against an obstacle, the front part of the reinforcing member is intended to absorb a portion of the the energy of the shock to prevent the latter from passing through the portion of the reinforcement to which is fixed the metallic support forming a mounting interface for a door hinge. According to one implementation, the honeycomb structure 3 may be shaped to define at least two zones Z1, Z2 of different rigidity. These different rigidities may be used to define within the alveolar Structure 3 a preferential deformation zone and a rigid zone having a greater than the preferred deformation zone stiffness. Preferably, the rigid region adjacent the preferred deformation zone along an axis substantially parallel to the extension axis of the cells of the cellular structure 3. In fact, these two areas can be distinguished by the sections of the cells, in the preferred deformation zone, the alveoli have dimensions greater than the dimensions of the sections of the sections of the cells located in the rigid zone.
According to a particular implementation, the preferred deformation zone Z1 is a front region of the reinforcing part and the rigid zone Z2 is a rear region of the reinforcing part. These two areas can in particular extend on either side of the common base 13 mentioned above. The front region of the reinforcing part is the area closest to the front of the vehicle and the rear region of the reinforcing part is the closest to the rear area of ​​the motor vehicle, when the reinforcing piece is assembled the motor vehicle. This is particularly the case in connection with the Figures 1 type reinforcing member 2 and extending in a force transfer path in case of frontal impact of the vehicle against an obstacle. Therefore, the metal support is preferably attached at the rear region of the reinforcing part so that the front region can be deformed in a frontal impact to the vehicle without changing the geometry of the rear part on which is mounted the door.
The composite material made base for the honeycomb structure may be constituted by: - ​​a die or a polyamide type resin
- short fibers fiberglass: this is called loading, the base may be a load of 30% glass fiber in the composite.
In other words, the composite material may comprise a resin matrix (e.g. plastic), including thermosetting or thermoplastic, and fibers, in particular glass fibers or carbon fibers.
The invention also relates to a method for manufacturing a reinforcing member 1 as described. Preferably, such a method comprises a step of forming the honeycomb structure 3 in a mold. Preferably, the method comprises a step of placing the metal support 2 into the mold prior to forming the honeycomb structure 3, or a step of bonding the metal substrate 2 of the honeycomb structure 3 after its formation and release from the mold. It is then understood that the method of manufacture may be used injection techniques. Once the resin injected into the mold with the fibers, it is sufficient to wait for it polymerizes.
The invention also relates to a method of assembling a portion of a motor vehicle. Such an assembly method may comprise a step of providing a reinforcing member 1 as described and a step of forming a structural member of a motor vehicle comprising said reinforcing piece provided, in particular said shaped structural member is a foot before 5 or 6 of the motor vehicle environment. In particular, the step of forming the structural member comprises providing a body side 8 and the provision of a lining 7 of the body side, said one reinforcing member provided first being joined to the liner body side 7 and the side frame 8 is mounted on the assembly formed by the assembly of the patch 1 to the body side liner 7.
Each reinforcing member 1, 1 a, 1 b, 1 c, 1 d assembled to the body (side more lining box body side) may be made by gluing. The principle of bonding between composite and metal parts is known and will not be described here in detail.
Thus, the patch may be adhered to the body side 8 and / or the body side liner 7.
The adhesive used may be different depending on the materials to be assembled, the manufacturing time to be observed and the resulting mechanical stresses. In order to achieve assembly of the amount, it can be used a glue bi- component and polyurethane. Polyurethane adhesives are based on the chemistry of polyisocyanates and polyether / Polyols polyesteriques. They exist in mono or bi-component structure. The monocomponent adhesives react to moisture in the air and can be applied at room temperature or at elevated temperature as for thermoplastic adhesives. Two-component adhesives must be mixed in precise proportions before use. Surface treatments are possible and even necessary in some cases: Primary to deposit operation called "plasma" or "corona". The adhesive can come fix the reinforcing member to the body side 8 and the lining 7 of the body side. In other words, one or more glue fillets can come adhering the reinforcing member to the body side liner and / or the body side.
The body side 8 or the body side liner 7, or both, may be of composite material in order to reduce the weight of the motor vehicle. It is also possible that the side frame 8 is made of metal and the body side liner 7 is made of composite material, or vice versa.
In terms of assembling step of the motor vehicle provided with a reinforcing member 1 as described, it is possible to follow the same line as assembled bin sheet: this is to use a line preassembly and a general assembly line. Line preassembly can form different units of the body by using a process of assembling the various units of the body of the motor vehicle on a moving line. As part of the patch, we are centered on the line of pre-assembly of the assembly formed by the body side 8, the one reinforcing parts 7 and the lining body side, such assembly the The above unit. The initial steps are the following (pre-assembly positions):
- pre-assembly of the liner 7 of the body side and one reinforcing parts, 1b at the front foot 5,
- pre-assembly of the liner 7 of the body side and reinforcing parts 1 c, 1 d of the pillar 6,
- Pre-assembly of the unit with the fund 8. Finally side, we get a unit left or right, complete why one reinforcing parts, 1b, 1c, 1d are sandwiched between the side of body 8 and the corresponding lining 7 corresponding body side.
During the different steps, the areas of bonding are defined, and the bonding kinematics is defined in order to avoid contacts or scraping of the glued areas. The amount of glue is defined in function of the requested mechanical resistance and stiffness desired box.
bonding games (gap between parts) are defined as such:
- 1 mm gap between two parts of the same unit,
- 2 mm gap between two units, the latter game to catch geometric faults units.
Of course, these values ​​are given by way of example and are refined based on geometric returns output manufacturing and assembly.
In order to facilitate the different stages of assembly, it is possible to integrate the functions of pilot or pre-holding fasteners: the crosslinking of the adhesive must be made as quickly as possible and in accordance with the production rate. pre-holding fasteners are adequate to crosslinking in the longer term without distorting the geometry of the assembly.
According to a particular embodiment, the step of forming the structural member mentioned above using glue, there is provided a heating step to accelerate the curing process of the adhesive and to freeze a box geometry. For example, the heating temperature used in the heating step may be 80 ° C for 20 min. Preferably, this heating step is carried out after different sized stiffeners 1 a, 1 b, 1 c, 1 d to a lining 7 of corresponding body side and the body side corresponding 8.
The composite materials used for the lining box 7, the body side 8 or the reinforcing member may be made of a carbon weaving to form high performance materials exceeding the mechanical properties of the best steels with a very high elastic limit their use is therefore possible and advantageous in the context of composite vehicle body. The use of composites is a major element in relief: the reinforcing member described above includes part of metal and reinforces the holding benefits. As mentioned above, the alveolar forms participate in the mechanical strength: energy absorption and high bending strength according to shapes and thicknesses of the cells. Metal supports are in turn useful for interfaces must be fatigue benefits, vibratory and acoustic and ensure interfaces with mounting pieces (transom panel, side door, etc.).
The use of composites leads to more easily obtain complex and larger forms while reducing the number of parts to manufacture and assemble. In addition, it is easy to vary the thicknesses of the same composite part to respond better to benefits.
Depending on the desired benefits, it is possible to adapt the structure of the patch. Thus the material defining the honeycomb structure may have a thickness between 1 and 5mm, 4mm, the metal support may have a thickness enter 0.8mm and 2.5mm and the connecting members 4a, 4b (inserts, casks, nuts or screws) can be crimped, welded or glued to part of the metal substrate 2. the thicknesses of the metal support 2 and / or the material defining the honeycomb structure 3 may vary, they can increase by area and rooms, c ' is to say, be adaptable to demand.
From baseline perimeter wherein the vehicle body reinforcements are made of steel, it is possible to obtain a gain of more than 20% to the mass with the use of cellular reinforcing composite parts. Furthermore, with the present invention, the number of parts compared to a sheet metal vehicle body according to the prior art is reduced by about 15% while incorporating new features.
The use of reinforcing parts as described to reinforce a front foot or the middle allows to respect security constraints in the event of shocks, ensure preservation of the user ergonomics by keeping up profiles before and environment compatible with the usual benefits while gaining relief. The composite materials used as part of the patch, and / or body side and / or the body side liner can achieve this result. An additional advantage in the use of composite materials is that it is possible to obtain new complex shapes hitherto difficult to obtain due to the use of the sheet.
In order to reduce manufacturing costs, the same composite material may be used to form the reinforcing member, the body side and the body side liner. Of course, it is also possible to adapt the composite material depending on the desired benefits of the part (reinforcing part, body side or body side liner).
In a variant shown in Figure 9, it is also possible to integrate a sealing rabbet with the body side liner 7 and the body side 8. The honeycomb structure 3 may comprise extension wall 100a, 100b longitudinal X-direction which can be positioned directly in abutment against the bonding interfaces (rebates) belonging to the body side liner and the body side.
The metal support may be totally or partially covered by a protective resin layer to prevent corrosion problems, especially at the connecting elements which will also preferably covered by said resin.
1. reinforcing piece (1) for a motor vehicle comprising a metal support (2), characterized in that it comprises a honeycomb structure (3), including honeycomb formed by a composite material and joined to the metal support (2 ), the metal support (2) has connecting elements (4a, 4b) of at least one member, the connecting elements (4a, 4b) are configured to allow the fitting of a cross board edge of the motor vehicle and / or a hinge side door of the motor vehicle.
2. reinforcement piece according to claim 1, characterized in that the composite material comprises a resin matrix including thermosetting or thermoplastic, and fibers, especially glass fibers or carbon fibers.
3. reinforcing piece according to claim 1 or 2, characterized in that the honeycomb structure (3) comprises two sets of cavities extending from a common basis in opposite directions.
4. reinforcing piece according to one of claims 1 to 3, characterized in that the honeycomb structure (3) is shaped so as to define at least two regions of different stiffness.
5. reinforcement piece according to any one of the preceding claims, characterized in that the metal support (2) is shaped so as to marry separate parts of faces of the honeycomb structure (3).
6. A motor vehicle, characterized in that it comprises at least one reinforcing piece (1) according to one of claims 1 to 5.
7. Motor vehicle according to the preceding claim, characterized in that said at least one reinforcing piece (1) is mounted to said motor vehicle so as to form a front pillar reinforcement (5) or B-pillar (6) of the motor vehicle .
8. Motor vehicle according to Claim 6 or 7, characterized in that it comprises a front foot (5), a pillar (6), a front side door hinged to the front foot (5), an articulated rear side door on the pillar (6) and a transom panel, said front foot being provided with: a first reinforcement piece (1 a) according to one of claims 1 to 5, an upper hinge of the front side door the motor vehicle being mounted on the bracket of the first patch (1 a) and the cross member of the dashboard is mounted on the metal support of the first patch (1 a), a second patch (1b) according to one of claims 1 to 5, a lower hinge of the front side door of the motor vehicle being mounted on the bracket of the second patch (1 b) and the pillar (6) being provided with - a third reinforcing member (1 c) according one of claims 1 to 5, an upper hinge of the rear side door of the motor vehicle being mounted on the bracket of the third reinforcement part (1 c), - a fourth reinforcing member (1 d) as to one of claims 1 to 5, a lower hinge of the rear side door of the motor vehicle being mounted on the bracket of the fourth reinforcing member (1d).
9. A method of assembling a portion of a motor vehicle, characterized in that it comprises the following steps:
- a supply of a reinforcement part according to one of claims 1 to 5,
- formation of a structural member of a motor vehicle comprising said reinforcing piece provided, said structural member is formed a front foot (5) or areas (6) of the motor vehicle.
10. Method according to the preceding claim, characterized in that the structural element forming step includes providing a body side (8) and providing a body side liner (7), said reinforcing piece (1) provided firstly being joined to the body side liner (7) and the body side (8) is mounted on the assembly formed by the assembly of the reinforcement part (1) the liner (7) body side.
January 1. A method of manufacturing a reinforcing piece (1) according to any one of claims 1 to 5, characterized in that it comprises a step of forming the honeycomb structure (3) in a mold, a step of placing the metal support (2) in the mold prior to forming the honeycomb structure (3) or a step of bonding the metal support (2) on the honeycomb structure (3) after its formation and release from the mold.
PCT/FR2016/051947 2015-08-27 2016-07-27 Reinforcing part with a cellular structure for a motor vehicle WO2017032935A1 (en)
FR1557981 2015-08-27
FR1557981A FR3040357A1 (en) 2015-08-27 2015-08-27 reinforcing piece has alveolar structure for a motor vehicle
EP16757303.9A EP3341267A1 (en) 2015-08-27 2016-07-27 Reinforcing part with a cellular structure for a motor vehicle
WO2017032935A1 true WO2017032935A1 (en) 2017-03-02
ID=54608757
PCT/FR2016/051947 WO2017032935A1 (en) 2015-08-27 2016-07-27 Reinforcing part with a cellular structure for a motor vehicle
EP (1) EP3341267A1 (en)
FR (1) FR3040357A1 (en)
WO (1) WO2017032935A1 (en)
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