• 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 train comprises, at each end of an axle crossmember, a longitudinal arm connecting to a chassis of the vehicle, and a stub axle (1) mounted on the arm via two connecting ball joints (4, 5), upper and lower, which define a steering pivot axis. One of the two ball joints (5), upper and lower, is asymmetrical and able to be mounted in two distinct directions so as to define two distinct angularly offset steering pivot pins.
    公开号:FR3015416A1
    申请号:FR1363255
    申请日:2013-12-20
    公开日:2015-06-26
    发明作者:Francois Roulin；Johann Willemenot
    申请人:Renault SAS；
    IPC主号:
    专利说明:

    [0001] Title: suspension train for a motor vehicle, connecting ball for the train and corresponding mounting method The invention relates to the technical field of motor vehicle trains. A front or rear train of a motor vehicle corresponds to a complete system of front or rear suspension of the vehicle. Each train comprises an axle which comprises a cross member extending transversely under the body and two longitudinal arms each carrying a wheel, via a stub axle and a rocket. The knuckle is the mechanical part which, through the rocket, supports the mechanical bearing and the rotating parts of the wheel. It is also this piece that is oriented during an action on the direction, via a steering rod. To allow the rear wheels to steer, each knuckle is mounted on the axle via an upper ball and a lower ball joint, which define a steering pivot axis. An angle, called the hunting angle, is generally given to the steering pivot. By definition, the flush angle is the angle between the pivot axis and the perpendicular to the ground in a vertical plane. This angle plays an important role in the behavior of the vehicle steering. A rear axle is provided with two longitudinal arms extending towards the front of the vehicle. Each of the axle arms is fixed to the chassis of the vehicle by a point of articulation located in the front part of the arm. Depending on the ground clearance of the vehicle, this point of articulation of the chassis axle is positioned more or less high relative to the ground. Take the example of a low sedan equipped with a rear axle on which the stub axles are mounted so as to provide a desired hunting angle. If the rear axle was mounted on a high-floor minivan, the axle pivot points on the chassis should be raised. This would result in a modification of the hunting angle, which is undesirable. The same rear axle can not be used on vehicles with different ground clearance, without expensive modification of the axle. The present invention improves the situation.
    [0002] To this end, the invention relates to a wheel suspension train for a motor vehicle having, at each end of an axle cross member, a longitudinal link arm to a chassis of the vehicle, and a rocket mounted on the arm via two upper and lower connecting links, which define a steering pivot axis, characterized in that one of the two upper and lower ball joints is asymmetrical and able to be mounted in two distinct directions of in order to define two distinct pivot axes of direction, angularly offset. The suspension train of the invention can be mounted on two vehicles having different ground guards, one high and the other low, and provide two identical or close hunting angles through the possibility of creating two pivot axes rotation, angularly offset relative to each other, depending on the mounting direction of the asymmetric ball joint. The angular offset between the two possible rotational pivot axes ultimately makes it possible to completely or partially compensate for the pivoting of the stub axle around the wheel axle induced by the change of ground clearance. With this, the same suspension train can be used for two different types of vehicle, which is economically very interesting for the car manufacturer. In a particular embodiment, the asymmetric ball 20 comprises an inner sleeve having two coaxial tubular portions of different respective lengths located on either side of a portion containing the center of rotation of the ball. Advantageously, the asymmetric ball joint is the lower ball joint. Advantageously, the asymmetrical ball joint is mounted on a U-shaped support yoke integral with the longitudinal arm. In a particular embodiment, the angular offset between the two pivot axes corresponding to the two mounting directions of the asymmetric ball joint is adapted to induce two desired hunting angles, respectively in the case where the train with the asymmetric ball joint mounted in the asymmetric ball joint one of the two directions is mounted on a vehicle having a first ground clearance and in the case where the train with the asymmetric ball joint mounted in the other direction is mounted on another vehicle having a second ground clearance, different from the first. The two hunting angles can be identical, or close. The suspension train according to the invention may be a rear suspension train. The invention also relates to a connecting ball between a stub axle and a longitudinal link axle link to a motor vehicle frame, comprising two parts, inner and outer, movable in rotation relative to each other around a center of rotation, said ball having two possible mounting directions, characterized in that it has an asymmetry adapted to change the position of the center of rotation in the mounting direction. In a particular embodiment, it comprises an inner sleeve comprising two coaxial tubular portions of different respective lengths located on either side of a portion containing the center of rotation of the ball joint. The invention finally relates to a method of mounting a suspension train as defined above on a motor vehicle having a given ground guard, characterized in that one of the two possible mounting directions of the ball joint is selected. asymmetrical according to the ground clearance of the vehicle. The invention will be better understood with the aid of the following description of a particular embodiment of a suspension system of a motor vehicle and of a connecting ball joint according to the invention, with reference to the appended drawings in which FIGS. 1A and 1B show a side view of a wheel and a stub axle of the train, respectively in two mounting directions of the lower ball joint; FIGS. 2A and 2B schematically represent a steering pivot axis of the wheel of FIG. 1 and a segment connecting the wheel center and an axle pivot point on a chassis, respectively for a low sedan and for a high-performance minivan. ; - Figure 3 schematically shows the lower ball of Figures 1A and 1B in both mounting directions; - Figure 4 shows an exploded view of the rocket door and the lower ball of Figures 1A and 1B; - Figure 5 shows a general view of the suspension train, according to a particular embodiment of the invention; - Figure 6 shows a side view of one of the knuckle of the train of Figure 5. In Figure 5, there is shown a general view of a suspension train 100 of a motor vehicle. In the particular example described here, it is a rear train. The invention could also apply to a front suspension train. In known manner, the rear axle 100 comprises an axle cross member 101 and, at each lateral end of the cross member 101, a longitudinal arm 102R (right side), 102L (left side), extending towards the front of the vehicle , of connection to the chassis, or body, of the vehicle. Each arm 102R (right), 102L (left), is further intended to carry a wheel 3, via a knuckle 1 and a rocket 2. For the sake of clarity, the corresponding elements, respectively located right sides and left side of the vehicle, bear the same references. The left rear rocket 1 is shown in exploded view in FIG. 4 and mounted on the arm 102R in FIG. 6. The knuckle 1 (right or left) 20 comprises, in known manner: a central opening 13 of receiving the rocket 2, - an upper arm 10 for receiving an upper ball 4, - a lower arm 11 for receiving a lower ball 5, and - a lateral arm 12 for attaching a steering rod 8. The rocket 2 is force-fitted into the central opening 13, the rocket carrier 1 and the rocket 2 being integral and forming an indémontable assembly. The rocket carrier 1 and the rocket 2 are here two separate mechanical parts, made respectively of cast iron and steel for example. Alternatively, the stub axle and the rocket could be forged in one piece. The rocket 2 is intended to carry the mechanical bearing 6 and the central portion 7 of the wheel 3. The upper arm 10 of the knuckle 1 has a cylindrical opening through 14, forming receiving housing of the upper ball 4. Likewise, the lower arm 11 has a cylindrical through opening 15 forming a housing for receiving the lower ball 5. The axes of symmetry of the cylindrical openings 14 and 15 are parallel to each other and to the wheel plane 3 and extend generally in the direction longitudinal axis of the vehicle in FIG. 6. In the particular embodiment described here, each of the two ball joints, lower and upper 4, is force-fitted into the corresponding receiving housing 15, 14 of the knuckle carrier 1. Each ball joint 4 (5) comprises, in known manner, an inner portion and an outer portion rotatable relative to each other. More specifically, each ball 4 (5) comprises an inner sleeve 40 (50) surrounded by a sleeve 41 (51), or outer ring. Inner sleeve 40 (50) is a cylindrical tube having a bulge of spherical shape (not shown). The two tube portions 42, 43 (52, 53), located on either side of the spherical bulge portion, project at their free ends from the outer ring 41 (51). The spherical bulge is placed in an internal spherical cage, for example metal or plastic, carried by the outer ring 41 (51), and rotatable in this cage. The inner sleeve 40 (50) is rotatable relative to the outer ring 41 (51) about a center of rotation O (O ') corresponding to the center of the spherical bulge, along the three axes x, y , z shown in Figures 4 and 5. Each ball 4 (5) is mounted in a U-shaped clevis 103 (104) integral with the axle arm 102R, via a support axis. The outer ring of the ball 4 (5), here forcibly fitted into the knuckle 2, is integral in displacement of the knuckle 2. The inner sleeve of the ball 4 (5) is integral in displacement 25 of the arm axle 102R. The upper ball 4 is symmetrical, the two tubular portions 42, 43 of inner sleeve being of the same length and equidistant from the center of rotation of the ball. In contrast, the lower ball 5 is asymmetrical: the two bushing portions 52, 53 are of respective different lengths. Thus the center of rotation, denoted O ', of the lower ball 5 is offset relative to the middle of the axial segment connecting the two free ends of the inner sleeve 50.
    [0003] The two ball joints, upper 4 and lower 5, define a pivot axis of the stub axle 1 and the wheel 3 carried by it, commonly called "steering pivot pin", containing the centers of rotation 0 and 0 ' . The steering pivot axis makes a non-zero angle with the perpendicular to the ground on which the vehicle is placed. This angle, called "hunting angle", plays an important role in the direction of the vehicle. The ball joints 4 and 5 can be mounted in two opposite directions, by reversing at 180 ° along their longitudinal axis. The lower ball 5 being asymmetrical, its overturning makes it possible to define two distinct axes of direction pivot, denoted AX1 and AX2, offset. angularly at an angle O. In Figure 1A, the lower ball 5 is mounted in a first direction and defines with the upper ball 4 the pivot axis AX1. In Figure 1 B, the lower ball 5 is mounted in a second direction and defines with the upper ball 4 the pivot axis AX2. Furthermore, in FIG. 1B, the position of the pivot axis AX1 is represented in order to show the offset angle θ between the two axes AX1 and AX2. With reference to FIGS. 1A, 1B and 3, when the lower ball 5 is mounted in a first direction (as shown in FIG. 1A) in a U-shaped support yoke, its center of rotation O 'is positioned at a point A on the segment [CD] which connects the two U-shaped branches of the yoke and is carried by the longitudinal axis of the ball 5. When the ball 5 is mounted in the same support yoke, or in a similar yoke support, in the second opposite to the first one (as shown in FIG. 1B), its center of rotation O 'is positioned at a point B, distinct from the point A, on the segment [CD]. The longitudinal offset between the two points A and B along the segment [CD], that is to say between the two possible positions of the center O 'according to the mounting direction of the ball 5, is in the example of particular embodiment shown in Figure 3 equal to 17mm. Of course, this offset could have a different value, for example between 1 mm and 50 mm. The suspension train 100 equipped with the asymmetric ball 5 can be mounted on two types of vehicle, having different ground guards, one said "high" and the other called "low", while providing two angles of desired hunting, including two identical or similar hunting angles.
    [0004] Take the example of a rear suspension train 100 adapted to be mounted on a low sedan, corresponding to a vehicle V1, and a high MPV, corresponding to a vehicle V2. When the rear suspension train 100 is mounted on the vehicle V1 (low sedan), the axle arms 102R and 102L are connected to the front of the chassis, or body, of the vehicle V1 in two respective points of articulation axle on box, noted PA1, located at a height H1 relative to the ground. FIG. 2A diagrammatically shows the segment connecting the wheel center CR and the axle pivot point PA1. In this case, the lower ball 5 is mounted in a first direction (here that shown in Figure 1A). In this configuration, the two connecting joints 4 and 5 form the AX1 steering pivot pin and it forms a flush angle α relative to the perpendicular to the ground. When the same rear suspension train 100 is mounted on the vehicle V2 (minivan high), the axle arms 102R and 102L are connected to the chassis, or body, of the vehicle V2 at two respective points of articulation axle on body, noted PA2, located at a height H2 relative to the ground. The height H2 is strictly greater than H1. This results in a "pivoting" of the position of the knuckle 1 about the wheel axle 3 relative to the corresponding position 20 of the knuckle 1 on the vehicle V1 (low sedan). FIG. 2B schematically shows the segment [CRPA2] connecting the wheel center CR and the axle pivot point PA2. In this case, the lower ball 5 is mounted in the second direction (as shown in Figure 1B), the opposite of the first direction. In this configuration, the ball joints 4 and 5 form the pivot pin 25 direction AX2 which forms a flush angle, here equal to the angle a1, relative to the perpendicular to the ground. The angular offset between the pivot axis AX2 and the pivot axis AX1 ultimately compensates for the pivoting of the rocket carrier 2 induced by the difference in height between the respective ground guards of the two vehicles V1 (low sedan) and V2 (minivan high). FIG. 2B also shows an axis AX3 corresponding to the position of the steering pivot in the event that the train 100 is mounted on the high-visibility MPV V2, without modifying the mounting direction of the ball 5 (FIG. that is to say with the ball 5 mounted in the first direction as shown in Figure 1A). It is found that the hunting angle would be modified in this case, and in this case negative. Thus, during assembly of the suspension train 100 on a motor vehicle, one of the two possible mounting directions of the asymmetrical ball 5 is selected according to the ground clearance of the vehicle. In the particular embodiment described here, the first mounting direction (Figure 1A) is chosen for a low sedan and the second mounting direction (Figure 1B) is chosen for a high MPV.
    [0005] In the embodiment which has just been described, the asymmetry of the lower ball joint is adapted to allow to obtain the same hunting angles in the case where the rear axle is mounted on a vehicle having a low ground clearance. and in the case where the same rear axle is mounted on a vehicle having a high ground clearance. Alternatively, the asymmetry of the lower ball may be adapted to obtain different hunting angles in both mounting directions. One could consider an asymmetric upper link ball instead of an asymmetric lower ball joint.
    权利要求:
    Claims (10)
    [0001]
    REVENDICATIONS1. Motor vehicle wheel suspension system having, at each end of an axle cross member (101), a longitudinal arm (102R, 102L) for connection to a chassis of the vehicle, and a stub axle (1) mounted on the arm (102R, 102L) via two upper (4) and lower (5) connecting joints, which define a steering pivot axis (AX1), characterized in that one of the two ball joints, lower (5) and upper (4), is asymmetrical and able to be mounted in two distinct directions so as to define two distinct axes of pivot (AX1, AX2) angularly offset (0).
    [0002]
    2. Suspension train according to claim 1, characterized in that the asymmetric ball joint (5) comprises an inner sleeve (51) having two coaxial tubular portions (52, 53) and of different respective lengths, located on either side a portion containing the center of rotation (O ') of the ball (5).
    [0003]
    3. Suspension train according to claim 1, characterized in that the asymmetric ball joint is the lower ball joint (5).
    [0004]
    4. Suspension train according to one of the preceding claims, characterized in that the asymmetrical ball joint (5) is mounted on a U-shaped support yoke (104) integral with the longitudinal arm (102L).
    [0005]
    5. Suspension train according to one of the preceding claims, characterized in that the angular offset (0) between the two pivot axes (AX1, AX2) corresponding to the two mounting directions of the asymmetrical ball joint (5) is adapted to to induce two desired hunting angles, respectively in the case where the train with the asymmetrical ball joint mounted in one of the two directions is mounted on a vehicle having a first ground clearance and in the case where the train with the asymmetrical ball joint mounted in the other direction is mounted on another vehicle having a second ground clearance, different from the first.
    [0006]
    6. Train according to claim 5, characterized in that the two desired hunting angles are identical (a1).
    [0007]
    7. Suspension train according to one of claims 1 to 6, characterized in that it is adapted to be mounted at the rear of a motor vehicle.
    [0008]
    8. Ball joint between a stub axle (1) and an axle longitudinal arm (102L) for connection to a motor vehicle frame, comprising two parts, inner (50) and outer (51), movable in rotation one with respect to the other around a center of rotation (O '), said ball having two possible mounting directions, characterized in that it has an asymmetry adapted to change the position of the center of rotation (O') ) according to the mounting direction.
    [0009]
    9. Ball joint according to claim 8, characterized in that it comprises an inner sleeve (50) having two coaxial tubular portions (52, 53) of different respective lengths located on either side of a portion containing the center of rotation of the patella (O ').
    [0010]
    10. A method of mounting a suspension train according to one of claims 1 to 7 on a motor vehicle having a given ground guard, characterized in that one selects one of two possible mounting directions of the ball joint asymmetrical (5) according to the vehicle's ground clearance.30
    类似技术:
    公开号 | 公开日 | 专利标题
    EP3083294B1|2019-01-02|Suspension assembly for a motor vehicle, connecting ball joint for the assembly and corresponding installation method
    EP1827880B1|2011-02-09|Flexible axle comprising a cross-member with trapezoid cross-section, corresponding cross-member, vehicle and manufacturing method
    EP1578626A1|2005-09-28|Wheel support device with three pivots, suspension device and vehicle comprising said support device
    EP3691959B1|2021-11-03|Couplable automotive road vehicle with compact steering and suspension
    EP1673244A2|2006-06-28|Motor vehicle steering axle
    FR2875469A3|2006-03-24|SEMI-TRAILER OR TRAILER WITH PERFECTED DIRECTION
    FR2864471A1|2005-07-01|Wheel shaft for use in vehicle, has crosspiece connecting two longitudinal arms, where each arm has side rail whose front portion has bent portion extending about specific angle
    EP3119665B1|2019-01-30|Rear structure of a motor vehicle
    EP2004429B1|2011-06-15|Rear axle of a vehicle, in particular a motor vehicle, and vehicle equipped with such a rear axle
    EP3186095B1|2018-10-31|Hub carrier for a vehicle wheel
    EP2475531B1|2014-04-30|Running gear, particularly for a motor vehicle
    FR2753931A1|1998-04-03|Vehicle wheel triangular suspension
    FR2908082A1|2008-05-09|Rear axle for motor vehicle, has crosspiece connecting longitudinal arms and formed of two plates separated on their length, and Panhard stabilizing rod articulated at end on one of arms and at another end on body shell of vehicle
    FR3101280A1|2021-04-02|SUSPENSION ELEMENT comprising an aid for the positioning of FIXING MEANS of a bar when assembling the vehicle
    FR3095613A1|2020-11-06|VEHICLE WHEEL TRIANGLE, WITH ARTICULATION FITTED ON A FIXING ROD VIA A BUSH
    FR3102388A1|2021-04-30|INSTALLATION OF CHASSIS ASSEMBLY TO VEHICLE BOXES, WITH VERTICALLY MOVABLE CLAMPS
    FR2926492A1|2009-07-24|Running gear e.g. front gear, sub assembly for motor vehicle, has device for adjusting height of steering stub axle with respect to suspension system for adjusting ground clearance of vehicle independently of displacement of system
    FR3029161A1|2016-06-03|MOTOR VEHICLE CRADLE COMPRISING SEVERAL LONGITUDINAL POSITIONS OF THE SUSPENSION TRIANGLES
    FR2701236A1|1994-08-12|Trailing arm suspension with filtering-out of longitudinal shocks, particularly for a motor vehicle rear wheel
    FR2791002A1|2000-09-22|Self-steering automobile rear wheel-axle unit utilizes resilient articulations with vertical fixing axes
    FR2894553A1|2007-06-15|Semi-trailer self-steering axle assembly has independently pivoting right and left supports with each wheel's pivot lying in central plane of wheel
    FR3028477A1|2016-05-20|MACPHERSON SUSPENSION SHOCK ABSORBER COMPRISING CLAMPING CAPS MODIFYING PARALLELIZED SPRAY
    FR2832099A1|2003-05-16|Multi-arm rear wheel axle unit comprises, for each wheel, rear and front transverse arms pivoted by elastic connections to chassis and to wheel pivot and omega shaped suspension spring
    FR2832101A1|2003-05-16|Multi-arm rear wheel axle unit comprises, for each wheel, rear and front transverse arms pivoted by elastic connections to chassis and to wheel pivot and suspension leaf spring
    FR2890001A1|2007-03-02|REAR AXLE OF DEFORMABLE TRAVEL MOTOR VEHICLE HAVING AN ADDITIONAL ANTI-ROAD BAR
    同族专利:
    公开号 | 公开日
    WO2015092174A1|2015-06-25|
    CN105899382B|2019-06-21|
    CN105899382A|2016-08-24|
    EP3083294A1|2016-10-26|
    FR3015416B1|2017-03-03|
    EP3083294B1|2019-01-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2452411A1|1979-03-30|1980-10-24|Audi Ag|WHEEL SUSPENSION FOR MOTOR VEHICLES|
    US4529223A|1982-07-15|1985-07-16|Mazda Motor Corporation|Vehicle rear-suspension mechanism|
    US4650208A|1984-12-26|1987-03-17|Ford Motor Company|Indexable caster adjusting plate for motor vehicles|
    EP0473876A1|1990-09-07|1992-03-11|The Budd Company|Stamped steering knuckle for mounting suspension components|
    WO1997031794A1|1996-02-29|1997-09-04|Netherlands Car B.V.|A motor vehicle|
    EP1757468A1|2005-08-25|2007-02-28|Nissan Motor Co., Ltd.|Suspension device|
    US20110127744A1|2009-09-30|2011-06-02|Gm Global Technology Operations, Inc.|Damping bushing for torsion-beam rear axle of a motor vehicle|
    WO2012032259A1|2010-09-09|2012-03-15|Peugeot Citroën Automobiles SA|Motor vehicle rear axle assembly with steered wheels|
    WO2013037652A1|2011-09-15|2013-03-21|Zf Friedrichshafen Ag|Steerable twist-beam rear suspension|
    WO2013072604A1|2011-11-15|2013-05-23|Peugeot Citroen Automobiles Sa|Method for producing trailing arms of a vehicle train suitable for different anti-nose lift angles|
    DE102016201994A1|2016-02-10|2017-08-10|Zf Friedrichshafen Ag|Steerable torsion beam axle|
    DE102016201992A1|2016-02-10|2017-08-10|Zf Friedrichshafen Ag|Steerable torsion beam axle|
    FR3084327B1|2018-07-30|2022-03-04|Renault Sas|AXLE FOR NON-DRIVEN TRAIN OF MOTOR VEHICLE|
    DE102019105497A1|2019-03-05|2020-09-10|Benteler Automobiltechnik Gmbh|Twist beam axle for an electrically powered motor vehicle|
    CN110293810A|2019-06-30|2019-10-01|重庆长安汽车股份有限公司|A kind of torsion beam rear suspension with active steering function|
    法律状态:
    2015-12-21| PLFP| Fee payment|Year of fee payment: 3 |
    2016-12-22| PLFP| Fee payment|Year of fee payment: 4 |
    2017-12-21| PLFP| Fee payment|Year of fee payment: 5 |
    2018-12-19| PLFP| Fee payment|Year of fee payment: 6 |
    2020-10-16| ST| Notification of lapse|Effective date: 20200905 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1363255A|FR3015416B1|2013-12-20|2013-12-20|SUSPENSION TRAIN FOR MOTOR VEHICLE, BALL JOINT FOR THE TRAIN AND METHOD FOR MOUNTING THE SAME|FR1363255A| FR3015416B1|2013-12-20|2013-12-20|SUSPENSION TRAIN FOR MOTOR VEHICLE, BALL JOINT FOR THE TRAIN AND METHOD FOR MOUNTING THE SAME|
    PCT/FR2014/052828| WO2015092174A1|2013-12-20|2014-11-06|Suspension assembly for a motor vehicle, connecting ball joint for the assembly and corresponding installation method|
    CN201480072365.3A| CN105899382B|2013-12-20|2014-11-06|For the suspended rack assembly of motor vehicles, connected ball cephalomere and corresponding installation method for component|
    EP14812582.6A| EP3083294B1|2013-12-20|2014-11-06|Suspension assembly for a motor vehicle, connecting ball joint for the assembly and corresponding installation method|
    [返回顶部]