Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
  • B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
  • B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
  • B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
  • B60G21/055—Stabiliser bars
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
  • B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
  • B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
  • B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
  • B60G21/055—Stabiliser bars
  • B60G21/0551—Mounting means therefor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
  • B60G2204/10—Mounting of suspension elements
  • B60G2204/12—Mounting of springs or dampers
  • B60G2204/122—Mounting of torsion springs
  • B60G2204/1224—End mounts of stabiliser on wheel suspension
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
  • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
  • B60G2206/40—Constructional features of dampers and/or springs
  • B60G2206/42—Springs
  • B60G2206/427—Stabiliser bars or tubes

Definitions

• the invention relates to an anti-roll bar for a motor vehicle.
• the invention finds a particularly advantageous application for anti-roll bars whose connection with the wheel supports of a vehicle is carried out without connecting rod.
• the wheels of the same axle of a motor vehicle are generally connected to two separate supports. These supports each carry a wheel at one of their ends and are articulated on the vehicle body, around the same axis transverse to the axis of the vehicle.
• the supports may, for example, be of the type drawn arms with oblique axis or drawn arms with oblique triangles, well known to those skilled in the art.
• Elastic damping means bearing on the supports elastically support the body and an anti-roll bar connected by its ends to the two supports, parallel and close to the hinge axis.
• the anti-roll bar applies a rectifying torque opposing deflections between the vehicle wheel supports.
• FIG. 1 of the state of the art shows the front axle 10 of a known vehicle type
• Ford 106 registered trademark
• the front axle 10 comprises two supports 12, 13 of the front wheels of the vehicle (not shown). Each support 12, 13 is connected with a fixing device 15 for a wheel (not shown) and a damping system 16.
• the anti-roll bar 1 1 comprises a central portion 20 extending along a transverse axis Y substantially transverse to a longitudinal axis of the vehicle and two branches 21, 22 respectively fixed on the supports 12, 13 with bearings 24, 25 equipped with a elastic wedge. Two other bearings 27, 28 connect the central portion 20 of the anti-roll bar 1 1 with the body (not shown) of the vehicle.
• the object of the invention is to reduce the forces of the fixing bearings of the anti-roll bars without connecting rod with the wheel supports of a motor vehicle.
• the invention proposes to integrate a bending system of the anti-roll bar to limit the forces of the fixing bearings.
• the invention therefore relates to an anti-roll bar for a motor vehicle having a central portion and two branches located on either side of the central portion, these two branches being intended to be respectively fixed to a support of a right wheel and a support of a left wheel of the vehicle, the central portion being intended to be fixed with the body of the motor vehicle so that the anti-roll bar applies a rectifying torque opposing deflections between the support of the right wheel and the support of the left wheel of the vehicle.
• the anti-roll bar is characterized in that it further comprises two bending systems, each arranged on a branch, allowing movement of the anti-roll bar along an axis transverse to a longitudinal axis of the vehicle.
• the invention thus makes it possible to absorb the transverse displacements at the level of the fixing bearings of the anti-roll bar with the wheel supports of the vehicle thus making it possible to greatly limit the degradation of the plane of the wheels of the vehicle due to the phenomena of pumping and rolling.
• the branches are intended to be arranged along the longitudinal axis of the vehicle.
• the central portion is intended to be disposed along the axis transverse to the longitudinal axis of the vehicle.
• at least one bending system comprises an elongated cross section along a vertical axis orthonormal with the transverse and longitudinal axes.
• At least one bending system comprises a pivot connection adapted to allow rotation of an end portion of a branch around a vertical axis orthonormal with the transverse and longitudinal axes.
• At least one bending system comprises an elastic connection provided with an elastic shim capable of allowing the rotation of an end portion of a branch about an orthonormal vertical axis with the transverse axes. and longitudinal.
• the elastic shim can deform by compression of material to dampen a small displacement of the end portion of the branch along the longitudinal axis.
• the elastic shim can deform by compression of material to dampen a small displacement of the end portion of the branch along the axis transverse to the longitudinal axis.
• Figure 1 (Already described): a schematic representation of a front axle of a known vehicle comprising a anti-roll bar of the state of the art;
• Figure 2 is a perspective view of an anti-roll bar according to a first embodiment of the invention;
• Figure 3 a perspective view of the bending system of the anti-roll bar of Figure 2;
• Figure 4 a perspective view of a bending system of an anti-roll bar according to a second embodiment;
• Figure 5 is a perspective view of a bending system of an anti-roll bar according to a third embodiment
• Figure 6 a sectional view of the bending system of Figure 5.
• the identical elements, similar or similar, retain the same references from one figure to another.
• Figure 2 shows an anti-roll bar 30 comprising a central portion 20 for carrying fixing bearings between the anti-roll bar 30 and a body of a vehicle.
• the anti-roll bar 30 also comprises branches 21, 22 intended to carry fixing bearings between the anti-roll bar 30 and wheel supports of the vehicle.
• the central portion 20 extends longitudinally along a transverse axis Y corresponding to a transverse axis of the vehicle.
• the branches 21, 22 extend perpendicular to the central portion 20 along a longitudinal axis X of the vehicle.
• the anti-roll bar 30 of Figure 1 is preferably made of a single tubular metal part.
• a bend 34 substantially at 90 degrees connects the first branch 21 and the central portion 20.
• the second branch 22 is connected with the central portion 20 by two bends 35, 36 via an intermediate portion 37.
• the central portion 20 comprises a recess according to the opposite a vertical axis Z by means of two steps 38, 39.
• the anti-roll bar 30 also comprises a bending system
• FIG. 40 shows an enlargement of the branch 22 showing the bending system 40 of the anti-roll bar 30.
• the bending system 40 consists of a material reduction of the anti-roll bar 30 so as to allow a folding an end portion 45 of the anti-roll bar 30 at the bending system 40 along the transverse axis Y.
• the intermediate portion 37 and the end portion 45 of the anti-roll bar 30 comprise a substantially circular section while the folding portion
• transitions 42, 43 having a bias make it possible to pass from a substantially circular section to an oblong section.
• the flexibility of the bending system 40 thus makes it possible to absorb the transverse displacements of the anti-roll bar 30 at the level of the fixing bearing with a wheel support of a vehicle.
• the forces experienced by the fixing bearing in the direction of the transverse axis Y are almost zero and the position of the wheel plane is very slightly shifted during travel.
• the shape of the oblong section makes it possible to obtain flexural strength along the vertical axis Z at least identical to the flexural strength along the vertical axis Z of the substantially circular section of the portion of end 45.
• the anti-roll bar is a metal bar and the folding portion 41 is obtained by forging, but any other embodiment can be envisaged.
• FIG 4 shows a second embodiment in which a bending system 41 of the branch 22 of the anti-roll bar 30 comprises a pivot connection.
• the folding portion 41 of the first embodiment is decomposed into two connecting portions 47, 48 of substantially oblong section.
• the first connecting portion 47 comprises two outer rings 50, 51 coaxial axis R substantially parallel to the vertical axis Z.
• the second connecting portion 48 comprises a ring central 53 between the two outer rings 50, 51 also of axis R.
• the position of the central ring 53 between the two outer rings 50, 51 allows to prohibit the translation movements along the Z axis of the connecting portion 47 with respect to the connecting portion 48.
• the diameter of the central ring 53 and the diameter of the outer rings 50, 51 are substantially identical so that a cylindrical element 54, for example an anchor or a screw, allows the rotation of the end portion 45 about the axis R.
• FIGS 5 and 6 show a third embodiment of the invention for which a bending system 55 of the branch 22 of the anti-roll bar 30 comprises an elastic connection.
• a straight portion 57 of the second branch 22 has a first end connected to the elbow 36 and a second end carrying a hollow cylinder 59 of axis R containing an elastic shim 68.
• One end of the end portion 45 comprises a gripper 60 carrying two flanges 62 located on either side of the ends of the hollow cylinder 59. Bores formed in the flanges 62 allow the passage of a fastening means of the screw type 63 and nut 65.
• the flexion system 40 and articulated allows for absorb transverse displacements of the anti-roll bar 30 at the fixing bearing with a wheel support of a vehicle.
• the forces experienced by the fixing bearing in the direction of the transverse axis Y are zero.
• Such an embodiment allows the anti-roll bar, through the use of the elastic shim 68, to deform in compression so as to dampen small displacements of the end portion 45 along the axis longitudinal X or the transverse axis Y.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Vehicle Body Suspensions (AREA)
• Springs (AREA)
• Body Structure For Vehicles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=47599062

Family Applications (1)

Country Status (4)

Families Citing this family (5)

Family Cites Families (7)

• 2011
  • 2011-12-16 FR FR1161755A patent/FR2984235B1/fr not_active Expired - Fee Related
• 2012
  • 2012-12-12 WO PCT/FR2012/052891 patent/WO2013088062A1/fr unknown
  • 2012-12-12 EP EP12816716.0A patent/EP2790937A1/de not_active Withdrawn
  • 2012-12-12 CN CN201280062339.3A patent/CN104114387B/zh not_active Expired - Fee Related

Non-Patent Citations (2)

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