• 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:
    four-point conductor. the present invention relates to a four-point handlebar for a suspension of a rigid axle, especially of a commercial vehicle. the four-point handlebar features four mounting sockets (3), two mounting sockets (3) can be articulated on the vehicle axle and the mounting sockets can be articulated on the vehicle frame. in this case, the four-point handlebar comprises a one-piece handlebar body (1, 2) which is integrated, formed by the mounting inserts. the handlebar is distinguished by the fact that the handlebar body (1, 2) is formed from a set of composite fibers, in this case, the set of composite fibers comprises at least one set of longitudinal fibers (10, 11). the set of longitudinal fibers (10, 11) closes the mounting socket (3) at least along half of its circumference and moves at the same time at least along parts of the handlebar body (1, two). the invention makes it possible to make four-point handlebars in an optimized way in terms of their load and to reduce their mass while simultaneously having an extended area of use. based on a specifically presentable torsional flexibility, smaller and/or harder rubber bearings can be used for articulating the four-point handlebar, ie the vehicle axle. in addition, corrosion and vibration resistance will be improved, durability will be increased and component integration will be achieved, especially with regard to assembly, that is, fixing the four-point handlebars on the chassis and axle.
    公开号:BR112014001491B1
    申请号:R112014001491-4
    申请日:2012-06-22
    公开日:2021-06-29
    发明作者:Jens Eismann；Matthias Quaing；Eike Helm；Holger Bublies；Matthias Gercke
    申请人:Zf Friedrichshafen Ag；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a four-point suspension arm for a suspension of a rigid tree, especially of a utility vehicle.
    [0002] Four-point suspension arms of the species initially mentioned are known in the state of the art and have been used especially in trucks and other utility vehicles. Four-point suspension arms of this kind combine a number of functions and tasks in one module, for what was previously required a variety of suspension arms, ie modules in the area of driving trees.
    [0003] Therefore, by employing a four-point suspension arm, among others, the need for oscillation stabilizers around the longitudinal axis of the vehicle structure is dispensed with, since the four-point suspension arm, together with the existing longitudinal suspension arms can fulfill both the task of guiding the tree in transverse and longitudinal direction, as well as the task of moment support and stabilization of oscillations around the longitudinal axis. The three-point suspension arms normally required for driving the tree may also be dispensed with.
    [0004] On this basis, they are known from the state of the art - for example from documents DE 195 21 874, DE 102 06 809, for example from document DE 10 2004 014 61 - four suspension arms being known therein. forged points, produced in the form of sheet metal construction, that is, as a casting. In forging processes, however, as a result of production reasons, generally results in a massive rectangular cross section for the four-point suspension arm arms, which results in high weight of this component and high production costs and therefore , also, in higher fuel consumption and lower utility vehicle payload.
    [0005] Constructed, welded and cast four-point suspension arms are also heavy and, in addition, their production is complex. Especially, the bending required in the four-point metal suspension arms for a tree suspension can hardly be realized, which is why these bends need to be carried out largely with rubber bearing elements, to be correspondingly designed in large. volume, with different radial stiffness in their load directions. Due to the large deformations that these rubber bearings present, however, they have a tendency to wear and, therefore, need to be prematurely replaced.
    [0006] With this foundation, it is the task of the present invention to create a four-point suspension arm with which the mentioned limits of the state of the art of this species can be overcome. The four-point suspension arm, compared to the known metallic versions, should allow especially notable weight reductions, and with regard to the formation and integration of the bearing points, that is, the connection points on the tree and chassis, it should result in greater flexibility and allowing, in addition, the use of smaller and/or harder rubber bearings, enabling an improved vibratory effect as a four-point metal suspension arm and offering better corrosion resistance compared to suspension arms. four points, that is, formulate lower requirements for surface protection
    [0007] Figure 1 - a four-point suspension arm according to an embodiment of the present invention, in schematic isometric presentation; Figure 2 - section through the suspension arm body of another embodiment of a four-point suspension arm, according to the present invention, with a spacer of changeable length; Figure 3 - presentation in view corresponding to Figure 1, of a four-point suspension arm according to another embodiment of the present invention with layers, i.e., unidirectional longitudinal fiber windings, arranged in a cross shape; Figure 4 - presentation and view corresponding to figures 1 and 3, of a four-point suspension arm according to another embodiment of the present invention with a suspension arm body open in transverse direction; Figure 5 - presentation and view corresponding to figures 1, 3 and 4, shows a four-point suspension arm according to another embodiment of the present invention with an open suspension arm body in transverse and longitudinal direction; Figure 6 - schematic isometric presentation of the suspension arm body of a four-point suspension arm, according to another embodiment of the invention, in the form of a truss construction with torsional tubes; Figure 7 - presentation and view corresponding to figure 6 of another four-point suspension arm in the form of a hybrid truss construction with steel torsional tubes.
    [0008] Figure 1 shows a four-point suspension arm according to the present invention, in isometric schematic presentation. An area of the body 1 can be recognized which is followed in one piece by four suspension arms 2, each suspension arm 2 converging again in one form in a bearing slot 3.
    [0009] In addition, the box-shaped cross section 4 of the body area 1 of the four-point suspension arm is shown in figure 1 . The four-point suspension arm illustrated in Fig. 1 thus forms a hollow body of large volume with a box-shaped cross section 4, the bearing inserts 3 being integrally embedded in the four-point suspension arm. In this way - as well as by virtue of the production of the illustrated four-point suspension arm of fiber composite material with specifically aligned and arranged fiber layers - requirements such as weight reduction, load-oriented conformation, specific flexibilities with relation can be fulfilled. to flexion, longitudinal force, that is, torsion, as well as the possibility of integration of elastomeric layers, that is, joints. The characteristic arrangement of the longitudinal fibers, i.e. unidirectional reinforcements, which include the bearing inserts 3 at least along their half circumference, as well as in relation to at least parts of the suspension arm body 1, 2, is not specifically indicated in figure 1, for better visualization, which in this case should be seen, however, especially figure 3, and the corresponding description. Longitudinal fibres, that is to say unidirectional reinforcements, depending on their finish, are arranged in addition to the basic laminate of the hollow body or exclusively.
    [00010] Figure 2 shows a section through a four-point suspension arm with body area 1 and walls 6, 7 according to another embodiment of the present invention. In this four-point suspension arm, laterally - in the longitudinal direction of the body area 1 - tubes 5 are crimped as reinforcements. In addition, the four-point suspension arm according to figure 2, however, has a spacer 8 here shaped as a threaded bar, which keeps the two walls 6, 7 of the body area 1 at a constant distance. In this way, on the one hand, a strengthening effect results because the spacer 8 largely suppresses convex movements of the walls 6, 7 especially in the torsional load of the four-point suspension arm, which is carried out to the widest extent.
    [00011] In addition, by changing the effective length 9 of the spacer 8, the characteristic, that is, the rigidity of the four-point suspension arm, can be changed. For example, by increasing the height 9 of the body area 1, the degree of arching of the two walls 6, 7 is changed, in the same way as in the moment of surface inertia of the illustrated cross section of the four-point suspension arm, with corresponding consequences for the degree of flexural rigidity, ie torsion of the body area 1. On the other hand, by increasing the distance 9 between the two walls 6, 7 a prestressing of the walls 6, 7 results in the same way as a prestressing suspension arms 2 with respect to flexion (not shown in figure 2, but see figure 1).
    [00012] This last action also exerts corresponding effects on the overall torsional stiffness of the four-point suspension arm, with a differentiated bending of the walls 6, 7 and, in addition, also the longitudinal flexibility of the four-point suspension arm along the direction of travel in mounted state is influenced. A four-point suspension arm according to figure 2 with changeable spacer can therefore be suitable, in a simple way, with regard to different purposes of use, for example, for use in vehicles or different vehicle classes.
    [00013] Figure 3 shows a four-point suspension arm similar to the unit shown in figure 1, with a body area 1, four suspension arms 2, as well as four bearing sockets 3, with the body area 1 , suspension arms 2 and bearing housings 3 are also formed from a fiber composite material. The figure additionally presents a preferred version for the arrangement of longitudinal fiber sections, i.e., unidirectional prepregs 10, 11.
    [00014] In the embodiment shown, the four-point suspension arm therefore initially consists of a basic body (which may also contain a set of unidirectional fibers already arranged with optimized load, but which are not specifically demonstrated), as well as fiber sections 10, 11 unidirectional, arranged in the basic body in the form of coils or bandages. The windings or fiber sections 10, 11 in this case interconnect, in particular, two diagonally opposite bearing inserts 3, which cover the respective bearing insert 3 (along a section longer than half of its outer circumference respective) and thus forming a positive union. This means, in other words, also that the longitudinal fibers are now positioned in the circumferential direction of the bearing fit and, therefore, are positioned in the circumferential direction of the bearing fit and, therefore, are arranged, with relatively load optimization to force induction, in the suspension arm body 1,2.
    [00015] Due to the orthotropic material properties of the unidirectional fiber sections 10, 11 - which, in other words, have in different directions stiffness (E-module) and different strengths - the four-point suspension arm can thus be conformed, optimized for deformation and load. In this way, both longitudinal and transversal forces, incident on the vehicle axle, being introduced in the chassis, as well as torsions incident on displacement or displacement in curves, through a corresponding deformation of the suspension arm, can be received.
    [00016] In the material of the fiber sections 10, 11 unidirectional, it can be especially carbon fibers, glass fibers or a combination of these fibers, and the fibers are arranged by winding, forming or weaving are arranged correspondingly conforming to the direction of attachment. In addition to being applicable to fiber sections 10, 11, this latter procedure also applies to the body area 1 specifically, as well as to the suspension arms 2 and bearing inserts 3 profiled therein in one piece.
    [00017] Figures 4 and 5 show two other modes of four-point suspension arms according to the invention. In this case, figure 4 shows a four-point suspension arm with a body area 1, suspension arm arms 2 and suspension arm sockets 3, in which the body area 1 is shaped open in the transverse direction of the vehicle, while the body area 1 presents, in the longitudinal direction of the vehicle, closed walls 12. Also in the four-point suspension arm according to Figure 4, the bearing inserts 3 are again integrated in such a way into the suspension arm body, made up of sets of longitudinal fibers, i.e. the arms of the suspension arm 2 shaped integral with the suspension arm body are so integrated that the fiber paths (not shown in figure 4, but see figure 3) enclose the bearing fit at least along half of its outer circumference, making , therefore, a firm anchorage in the four-point suspension arm.
    [00018] Thanks to the open conformation of the area of the body 1, in the transverse direction of the vehicle, the four-point suspension arm, according to figure 4, presents greater flexibility, especially with respect to torsional deformation and, therefore, adapts. if, especially to be mounted on lighter vehicles, with lesser demands regarding the stabilization of oscillations around the longitudinal axis and/or greater demands regarding the maximum axial torsion.
    [00019] In the four-point suspension arm shown in figure 5, the body area 1 is formed open both in the transverse direction of the vehicle and also in the longitudinal direction of the vehicle (at point 12), which results in torsional and flexibility also even greater longitudinal, both in the area of the body 1, as well as in the suspension arms 2.
    [00020] In this way, a four-point suspension arm, for example, according to figure 5, can accept the tasks - hitherto basically performed by the elastomeric bearings to be integrated in the bearing sockets 3 - such as radial elasticity and axial, as well as damping of oscillations partially or eventually completely, so that smaller and lighter elastomeric bearings can be used or the need for elastomeric bearings can even be completely dispensed with. This means, in other words, that the four-point suspension arm can eventually even be joined directly by means of plain bearings with the vehicle chassis and/or with the vehicle axle. In this way, construction space, weight and costs will be saved, while at the same time an even more extensive functional integration is achieved with regard to the four-point suspension arm and the axle system.
    [00021] Figure 6 shows isometrically the suspension arm body of another modality of the four-point suspension arm according to the present invention. To show the structure of the suspension arm body shown in figure 6, the bearing inserts in figure 6 are not shown. arranged in a crisscross shape, forming the arms of the suspension arm 2, as well as two torsional tubes 13. In this case, the torsional tubes 13 protrude, (in the assembled state of the four-point suspension arm), in the longitudinal direction of the the vehicle and always interconnect in pairs the two bearing fittings of the bearing fitting pairs (see also figure 7) arranged, in relation to the vehicle, on the left and right sides.
    [00022] In the four-point suspension arm, according to figure 6, the beams 2 as well as the torsional tubes 13 are also formed in material with fiber post. Based on the truss arrangement of beam 2 and torsional tubes 13, the torsional stiffness, that is, the deformation of the four-point suspension arm in the torsional load, will be transferred in a bending of the beams 2. The torsional stiffness of the Four-point suspension arm can therefore be illustrated, ie applied the bending stiffness of beams 2 as well as the stiffness in the area of the crossing point of beams 2.
    [00023] Longitudinal forces acting on the direction of travel will in turn be received by the torsional tubes 13, resistant to traction and pressure, with which the longitudinal stiffness, that is, the longitudinal flexibility of the four-point suspension arm, of according to figures 6 and 7 is mainly defined by the torsional tubes 13. Lateral forces acting transversely to the direction of displacement, in turn, - through the cross arrangement of the beams 2 and the integration of the four-point suspension arm on the chassis - will be supported in the form of tensile and pressure forces on beam 2.
    [00024] Also the four-point suspension arm according to figure 7, is similar to a truss structure, similar to what occurs with the four-point suspension arm according to figure 6. Different in relation to figure 6, in figure 7 the bearing inserts 3 are also shown. 3 bearing fitting allocated. By the integral shaping of the bearing housing 3 - always on a longitudinal side of the four-point suspension arm referred to the vehicle - the torsional stiffness and/or longitudinal stiffness of the four-point suspension arm can be increased in particular in a special way. along the direction of travel, while the torsional behavior of the four-point suspension arm will continue to be preponderantly determined by the body of the suspension arm 1, which here too is shaped like a composite fiber assembly. Reference Listing 1 Body area 2 Suspension arm arm, flexible bracket 3 Bearing fit 4 Cross shape 5 Reinforcement tube 6 , 7 Wall 8 Standoff 9 Body height 10 , 11 Fiber section, Prepreg, Longitudinal fiber arrangement 12 Wall area 13 Torsional tube
    权利要求:
    Claims (16)
    [0001]
    1. Four-point suspension arm for a rigid tree axle suspension, especially of a commercial motor vehicle, the four-point suspension arm having four bearing inserts (3), of which two bearing inserts (3 ) can be articulated on the vehicle axle and two bearing fittings (3) can be articulated on the vehicle chassis, the four-point suspension arm comprising a twistable (1, 2) suspension arm body, which is basically integrated in the trapezoid formed by the bearing inserts (3), and which is formed from a composite fiber bundle, the composite fiber bundle comprising at least one longitudinal fiber bundle (10, 11), which is allocated to at least one insert of bearing (3), and which surrounds the at least one bearing fitting (3) at least along half of its circumference thereof, and runs along at least components of the suspension arm body (1, 2), characterized by two sets of longitudinal fibers (10, 11), each set of longitudinal fibers (10, 11) being allocated to one of the bearing socket pairs (3) arranged diagonally opposite one another.
    [0002]
    2. Four-point suspension arm according to claim 1, characterized in that the suspension arm body (1,2) forms a closed profile.
    [0003]
    3. Four-point suspension arm according to claim 1 or 2, characterized in that the suspension arm body (1, 2) has at least one thread that shear-resistantly interconnects the walls (6 , 7) opposite the suspension arm body (1,2).
    [0004]
    4. Four-point suspension arm according to any one of claims 1 to 3, characterized in that the suspension arm body (1, 2), at least in areas, is filled with a strong filling body to shear.
    [0005]
    5. Four-point suspension arm according to claim 4, characterized in that the filling body is pulled tight together with the walls (6, 7) of the suspension arm body (1,2) .
    [0006]
    6. Four-point suspension arm according to any one of claims 1 to 5, characterized in that the suspension arm body (1, 2) forms an open profile in the transverse direction of the vehicle and/or in the longitudinal direction , this profile being at least open on one side.
    [0007]
    7. Four-point suspension arm according to any one of claims 1 to 6, characterized in that the suspension arm body (1, 2) has at least one spacer (8), of changeable length, between two opposite walls (6, 7) of the suspension arm body (1,2).
    [0008]
    8. Four-point suspension arm according to any one of claims 1 to 7, characterized in that the suspension arm body (1, 2), in the vehicle's view, has an essentially one-piece or shaped cross (X) with a central body area (1) and four peripheral suspension arm arms (2) that support the bearing inserts (3), with the suspension arm arms (2) being shaped as flexible beams (2) of profiled section, whose transverse shape essentially corresponds to a box profile or an I-support.
    [0009]
    9. Four-point suspension arm according to any one of claims 1 to 8, characterized in that the two bearing inserts (3) of the pairs of bearing inserts, arranged on the left and right, with respect to the vehicle , are rigidly interconnected through a torsional tube (13).
    [0010]
    10. Four-point suspension arm according to claim 9, characterized in that the torsional tube (13) consists of metal, the two bearing fittings (3) being a pair of bearing fittings, interconnected through of the torsional tube (13), are integrally formed with the torsional tube (13).
    [0011]
    11. Four-point suspension arm according to any one of claims 1 to 10, characterized in that in the area of at least one bearing fitting (3) a bearing sleeve or a bearing is applied by lamination. elastomeric bearing, as a finished component.
    [0012]
    12. Four-point suspension arm according to claim 11, characterized in that at least one bearing sleeve is integrally formed with the suspension arm body or with the suspension arm arms (2).
    [0013]
    13. Four-point suspension arm according to any one of claims 1 to 12, characterized in that at least one bearing insert (3) is shaped to receive an inelastic rotational joint for coupling the arm. four-point suspension on the vehicle axle or on the vehicle chassis.
    [0014]
    14. Four-point suspension arm according to any one of claims 1 to 13, characterized in that at least one bearing insert (3) or at least one suspension arm arm (2) is shaped for non-articulated coupling of the four-point suspension arm to the vehicle axle or to the vehicle chassis.
    [0015]
    15. Four-point suspension arm according to claim 14, characterized in that the suspension arm body (1,2) or the suspension arm arms (2) are shaped elastic to flexion in the hair area minus one bearing fitting (3).
    [0016]
    16. Four-point suspension arm according to claim 15, characterized in that the shaped area elastic to flexion, relative to the suspension arm body (1, 2) or the suspension arm arms (2), is shaped as a laminate, this laminate comprising at least one laminate layer of an elastomeric material.
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    同族专利:
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    EP2734390A2|2014-05-28|
    JP2014524867A|2014-09-25|
    DE102011079654A1|2013-01-24|
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    法律状态:
    2018-12-11| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-01-14| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-05-04| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
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    申请号 | 申请日 | 专利标题
    DE102011079654.1|2011-07-22|
    DE102011079654A|DE102011079654A1|2011-07-22|2011-07-22|Four-point link|
    PCT/EP2012/062134|WO2013013912A2|2011-07-22|2012-06-22|Four-point link|
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