• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method of manufacturing an improved suspension triangle (1) for a vehicle suspension system. This new method comprises the following steps, taken in combination: on a base of stamped metal sheet, a layer of continuous fiber composite material is glued, so as to obtain a hybrid composite metal shell, in order to reinforce said shell hybrid, overmoulding in the latter an array of ribs (12) based on a composite material.
    公开号:FR3036065A1
    申请号:FR1554283
    申请日:2015-05-12
    公开日:2016-11-18
    发明作者:Frederic Riguel
    申请人:Peugeot Citroen Automobiles SA；
    IPC主号:
    专利说明:

    [0001] METHOD OF MANUFACTURING A SUSPENSION TRIANGLE FOR A VEHICLE, AND SUSPENSION TRIANGLE OBTAINED BY SUCH A METHOD The present invention relates to a method of manufacturing a suspension triangle for a vehicle suspension system. It also relates to an improved suspension triangle for a vehicle suspension system obtained by such a method. Finally, it relates to a vehicle, particularly a motor vehicle, whose suspension system comprises such an improved suspension triangle. The suspension triangles used in the suspension systems of current motor vehicles are, most often, made of steel. They may be, in some applications, made of aluminum. The steel suspension triangles are manufactured, in a manner known per se, by a stamping process of a steel sheet. They can be "mono-shell" or "bi-shells", the latter resulting from an assembly by welding two shells. The aluminum suspension triangles are manufactured, also known per se, by a casting type of forming process or by a forging technique. The disadvantage of steel suspension triangles is to have a relatively high non-suspended mass, which favors neither the comfort of the vehicle nor the reduction of emissions of 002. The aluminum suspension triangles have the same disadvantage, because that they are used on large vehicles, replacing steel triangles. [0006] We have already tried to overcome these difficulties. By way of example, the document US Pat. No. 7,938,417 B2 describes a suspension triangle, made of metal and plastic material, which comprises a main body made of sheet metal comprising at least one through bore. A plastic part is fixed rigidly on the main body. At least one articulated joint, which comprises an envelope or casing, is rigidly connected to the main body. This housing is inserted into the through bore, in the axial direction of the bore. A portion of this housing has a radial shoulder, which is located outside the through bore and which is embedded in the plastic part, so that the housing section, rigidly connected to the housing, is axially supported. on the main body. The object of the present invention is to provide a new method of manufacturing a vehicle suspension triangle, which makes it possible to produce a lighter suspension triangle than the suspension triangles known from the prior art, the realized mass gain being all the more interesting as it is an unsuspended mass gain. Another object of the present invention is to provide an improved suspension triangle, which retains a metal sheet, for example steel, on the lower part, therefore the closest to the road, so that this sheet 10 metal provides protection to composite parts against projections of the road. Finally, it is also an object of the present invention to provide such a suspension triangle, which is simple in design and manufacturing, which is robust, reliable and economical. To achieve these objects, the present invention is directed to a method of manufacturing an improved vehicle suspension triangle, and this method, again, comprises the following steps, taken in combination: [0012] a) on a sheet metal base, a layer of continuous fiber composite material is glued, so as to obtain an assembly called "hybrid composite metal shell" in the rest of the text, and [0013] b) in order to reinforce said hybrid shell composite metal, it molds in the latter a network of ribs based on a composite material. By "composite material" or "composite" is meant, in the present text, in a conventional manner, a heterogeneous material, formed of at least two constituents, which occupy different phases and are arranged according to an organization. geometric which gives it properties superior to those of the constituents taken separately. Also conventionally, a composite consists of a framework called "reinforcement", which consists of fibers, and a binder or matrix, which is most often a resin-type plastic capable of ensuring the cohesion of the structure and the transmission of forces to the reinforcement. According to one embodiment of the present invention, the layer of continuous fiber composite material bonded to the sheet metal base may itself be composed of several layers of unidirectional fibers, the orientation of the fibers. may be different from one tablecloth to another. [0016] Preferably, said layer of continuous fiber composite material, which is bonded to the sheet metal base, is of relatively small thickness, between 1 millimeter and 2 millimeters. The sheet metal base of the hybrid composite metal shell can be made by stamping from a sheet of one of the following metals: steel, aluminum. Preferably, the stamped metal sheet of the hybrid composite metal shell may be of relatively small thickness, between 1 millimeter and 2 millimeters. According to the preferred embodiment of the invention, the composite material, which reinforces by overmolding a network of ribs, the hybrid composite metal shell, is a short-fiber composite material, that is to say with weak fibers in front of the dimensions of the piece. According to an alternative embodiment, there is provided a first suspension triangle and a second suspension triangle, according to the manufacturing method described above in its outline, and is assembled by welding for example, the first triangle of Suspension at the second suspension triangle, so as to obtain a so-called "double shell" suspension triangle. The present invention also relates to an improved suspension triangle, mono shell or bi shell, for vehicle suspension system, which is obtained according to a manufacturing method according to those described above in their outline. The present invention finally relates to a vehicle, in particular a motor vehicle, wherein the suspension system has at least one improved suspension triangle, mono shell or bi shell, in accordance with that mentioned above. Other objects, advantages and features of the invention will become apparent from the following description of an exemplary embodiment, not limiting the object and scope of the present patent application, accompanied by drawings. in which: [0024] FIG. 1 is an overall perspective diagrammatic view of an improved suspension triangle obtained according to the manufacturing method which is the subject of the present invention, and [0025] FIGS. 2 to 4 are diagrammatic perspective views illustrating the different steps of the method according to the present invention making it possible to manufacture a suspension triangle, namely the starting part constituted by a metal sheet base (FIG. ), the layer of composite material (Figure 3) intended to be bonded to said sheet metal base and overmolding reinforcing ribs (Figure 2). Referring to the drawing of Figure 1, there is shown schematically a suspension triangle for vehicle suspension system, general reference 1, which allows, in a conventional manner, the connection between a wheel and the chassis of the vehicle, on the one hand, and between the wheel and the suspension ball, on the other hand. The reference 5 designates the ball-and-socket pallet, screwed on the triangle by the three nuts 5A, and the references 3 and 4 designate the elastic hinges, which are conventionally associated with such a wishbone. The manufacturing process of this suspension triangle applies to a starting piece consisting of a so-called "base" steel plate, reference 10, shown in the drawing of FIG. 4. This base is made by stamping to the shape, profile and dimensions of the wishbone. This base 10, as illustrated in the drawing of FIG. 2, comprises in particular an orifice 4A for positioning and supporting the elastic articulation 4, a cylindrical sleeve 3A for positioning and supporting the elastic articulation 3, and 5B orifices for fixing the ball-and-socket pallet 5. [0028] This base 10 made of sheet steel is of relatively small thickness, between 1 millimeter and 2 millimeters. On this base 10 made of steel sheet, a layer of continuous fiber composite material, of small thickness, is also bonded, preferably with the aid of an adhesion promoter, also between 1 millimeter and 2 mm, general reference 3036065 5 11 (Figure 3), so that one obtains the set designated "hybrid composite steel shell", [0030] In order to strengthen this assembly 10, 11, it is overmolded by injection into the composite steel hybrid shell, a network of ribs, collective references 12 (illustrated in the drawing of FIG. 2), based on a short fiber composite material, the resin of the ribs 12 mingling with the resin of the layer of composite material 11 during injection in press. The layer of continuous fiber composite material 11 may itself be composed of several layers of unidirectional fibers, that is to say of fibers 10 assembled parallel to each other, the orientation of the fibers may be different from one sheet to another. The tablecloths are then linked together. The number of plies and their directions are determining parameters in the production of the layer of composite material 11. The improved suspension triangle thus obtained consists of three stacked parts, of three types of materials arranged in superposed layers: a sheet thickness 10 (FIG. 4), a layer of composite material 11 (FIG. 3) with one or more layers of fibers and a reinforcement of ribs 12 (FIG. 4) made of short-fiber composite material. According to an alternative embodiment of the invention, the thickness of the sheet or base 10 can be made by stamping an aluminum sheet. According to another embodiment of the invention, there is provided an improved suspension triangle type "bi shell" as follows: [0035] a first suspension triangle is produced according to the method described above. and a second wishbone according to the same method, and welding, for example, the first suspension triangle to the second wishbone, so as to obtain, from the two suspension triangles of type mono shell thus manufactured, a triangle of suspension type bi shell. The welding operation of the two mono-shell suspension triangles is possible by the presence of a metal part in each of the two triangles. 3036065 6 Note that the suspension triangle manufacturing process described above in its various versions allows to keep a metal shell in the thin suspension triangle, especially steel, which keeps the assemblies existing suspension, in particular the fitting between the elastic joints 3 and 4 (FIGS. 1 and 4) and the suspension triangle 1, as well as the connection screwed between the ball-and-socket pallet 5 (FIGS. 1 and 4 as well) and the triangle. Thus, the method of the invention results in a new suspension triangle structure without impact on the current assembly means of said triangles. In addition, the fact that the structure of the wishbone according to the invention retains a thickness of ductile metal sheet provides the triangle with the advantage of always maintaining a mechanical connection between the wheel and the vehicle body. especially in case of accidental shock on the wheel. [0040] The improved suspension triangle for a vehicle suspension system, obtained according to the manufacturing method described above, has many other advantages, among which the following advantages: [0041] it makes it possible to manufacture a triangle of suspension lighter than the suspension triangles known from the prior art, - because its structure retains a metal part, located on its lower part close to the road, it offers protection to parts in "composite" against 20 the projections of the road, such as gravel projections for example, - it completely surrounds and completely protects said parts in "composites" when it is made in "bi-shell" version, [0044] - it allows retain metal interfaces, in particular steel, with the joints and the hinge pad described above, thus ensuring perfect interchangeability with a triangle of suspe As well as being compatible with the assembly means already existing in automobile assembly plants, it is of simple design, and it is robust, reliable and economical.
    权利要求:
    Claims (10)
    [0001]
    1. A method of manufacturing an improved suspension triangle for a vehicle suspension system, characterized in that it comprises the following steps, taken in combination: on a base (10) of sheet metal, one sticks a layer of composite material (11) with continuous fibers, so as to obtain a hybrid composite metal shell, in order to reinforce said hybrid composite metal shell, the latter is molded into the latter an array of ribs (12) based on a composite material.
    [0002]
    2. Manufacturing process according to claim 1, characterized in that the layer of continuous fiber composite material (11) can itself be composed of several layers of unidirectional fibers, the orientation of the fibers may be different from one tablecloth to another.
    [0003]
    3. Manufacturing process according to any one of claims 1 and 2, characterized in that the layer of composite material (11) with continuous fibers is of relatively small thickness, between 1 millimeter and 2 millimeters.
    [0004]
    4. Manufacturing process according to any one of claims 1 to 3, characterized in that the base (10) sheet metal of the hybrid composite metal shell is made of sheet metal of one of the following metals: steel, aluminum.
    [0005]
    5. Manufacturing process according to any one of claims 1 to 4, characterized in that the base (10) sheet metal of the hybrid composite metal shell is formed by stamping.
    [0006]
    6. Manufacturing process according to any one of claims 1 to 5, characterized in that the base (10) sheet metal of the hybrid composite metal shell is of relatively small thickness, between 1 millimeter and 2 millimeters.
    [0007]
    7. Manufacturing process according to any one of claims 1 to 6, characterized in that the composite material which reinforces by molding a network of 3036065 8 ribs (12) composite hybrid metal shell is a composite material short fibers .
    [0008]
    8. A method of producing an improved suspension triangle for a vehicle suspension system, characterized by the following steps taken in combination: a first suspension triangle and a second suspension triangle are produced in accordance with any one of the following: 1 to 7, the first suspension triangle is assembled by welding to the second suspension triangle so as to obtain a double-shell suspension triangle.
    [0009]
    An improved suspension triangle for a vehicle suspension system, characterized in that it is obtained according to a manufacturing method according to any one of the preceding claims. 15
    [0010]
    10. Vehicle, in particular a motor vehicle, characterized in that its suspension system has at least one improved suspension triangle according to the preceding claim.
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR3036065B1|2017-06-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    EP0507975A1|1991-04-05|1992-10-14|Nhk Spring Co., Ltd.|Suspension system for a vehicle|
    US20030034625A1|2001-08-16|2003-02-20|Klaus Runte|Wishbone for an automotive suspension|
    CA2416703A1|2003-01-20|2004-07-20|Multimatic Inc.|Structural i-beam automotive suspension arm|
    US20060175786A1|2005-02-02|2006-08-10|Benteler Automobiltechnik Gmbh|Control arm structure for wheel suspensions of motor vehicles, and method of making such a control arm structure|
    DE102009014194A1|2009-03-20|2010-09-23|Daimler Ag|Chassis part, particularly suspension arm for motor vehicle, comprises base body, and multiple bearings for arrangement of chassis part at body of motor vehicle|
    WO2011072889A1|2009-12-18|2011-06-23|Henkel Ag & Co. Kgaa|Composite component|
    WO2011141538A1|2010-05-12|2011-11-17|Sistemi Sospensioni S.P.A.|Composite structural element, particularly for a vehicle suspension, and method for manufacturing the same|
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    KR101393849B1|2012-12-12|2014-05-12|현대자동차주식회사|Law arm for vehicle|CN106696624A|2017-03-27|2017-05-24|安徽天裕汽车零部件制造有限公司|Rear-independent suspension swing arm mounting bracket assembly for automobiles|
    EP3456557A1|2017-09-13|2019-03-20|C.R.F. Società Consortile per Azioni|Oscillating arm of a motor-vehicle suspension|
    WO2020187519A1|2019-03-20|2020-09-24|Audi Ag|Suspension arm for a chassis of a vehicle, in particular a motor vehicle, and vehicle, in particular a motor vehicle|
    法律状态:
    2016-04-21| PLFP| Fee payment|Year of fee payment: 2 |
    2016-11-18| PLSC| Search report ready|Effective date: 20161118 |
    2017-04-21| PLFP| Fee payment|Year of fee payment: 3 |
    2018-06-29| CA| Change of address|Effective date: 20180312 |
    2018-06-29| CD| Change of name or company name|Owner name: PEUGEOT CITROEN AUTOMOBILES SA, FR Effective date: 20180312 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1554283A|FR3036065B1|2015-05-12|2015-05-12|METHOD FOR MANUFACTURING A SUSPENSION TRIANGLE FOR A VEHICLE, AND TRIANGLE FOR SUSPENSION OBTAINED BY SUCH A METHOD|FR1554283A| FR3036065B1|2015-05-12|2015-05-12|METHOD FOR MANUFACTURING A SUSPENSION TRIANGLE FOR A VEHICLE, AND TRIANGLE FOR SUSPENSION OBTAINED BY SUCH A METHOD|
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