DE7134620U - Independent suspension of the wheels of motor vehicles, especially passenger cars - Google Patents

Description

BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT, MÜNCHEN 13 }}

Sept 9, 1971

Independent suspension of the wheels of motor vehicles, especially passenger cars

The invention relates to an independent suspension of the wheels of motor vehicles, in particular passenger cars, bai the one Radführungsgiied from a wishbone and a torsion bar stabilizer that is connected to the wishbone and serves as a trailing arm or trailing arm consists, which is elastically mounted on the vehicle body or the like and the wishbones of the two sides Wheel linkages connects.

It is known in double wishbone or strut axles, the lower wheel guide member from a wishbone and a to form associated tensile or compression struts serving as longitudinal or trailing arms. This in the longitudinal direction of the vehicle or at an angle to the vehicle longitudinal direction extending tension strut can be through the mostly existing Torsion bar stabilizer can be replaced and is then part of the wheel guide. This type of wheel linkage is extreme Space-saving and cheap, because an additional component, namely the one otherwise required, is used for the longitudinal guidance of the wheel No tension or compression strut.

The stabilizer extends in the transverse direction of the vehicle and is mounted on the wishbones and on the vehicle body or the like. The bearings of the stabilizer on the vehicle body are usually as ring rubber elements, their axes of rotation are transverse to the direction of travel, formed. This gives the most favorable arrangement for the rotation of the stabilizer during compression and rebound of the wheels.

Sept 9, 1971

The disadvantage of this known wheel articulation, however, is to see that the stabilizer .in the rubber mounts not precisely sewn on the side of the vehicle body can be and thus carries out its own transverse movements under the influence of longitudinal and / or lateral forces. Because the stabilizer but is involved in the wheel guidance, these transverse movements lead to an influence on the wheel guidance geometry, what happens, for example, in the case of an axle suspension of steered wheels due to deflections on the wheels and thus makes undesirable steering movements of the vehicle that are detrimental to the driving characteristics noticeable.

The invention is based on the object, in an axle arrangement, in which the torsion bar stabilizer also serves as a wheel guide member, the articulation of the torsion bar stabilizer to accomplish; which have no disruptive influences on the Exercises wheel guide geometry.

To solve this problem it is proposed according to the invention that, seen in plan view, the axis of the torsion bar stabilizer in the area of its bearings on the vehicle body or the like. Each at an angle to the transverse direction of the vehicle runs, wherein the intersection of the axes of the torsion bar stabilizer from the axis of rotation of the torsion bar stabilizer is on the same side as the pivot points of the rotary scab stabilizer on the wishbones.

An advantageous embodiment of the invention can be seen in the fact that the axis of the torsion bar stabilizer in the area its bearing points on the chassis or the like. Approximately perpendicular to the straight connecting line through these bearing points with the pivot point of the torsion bar stabilizer on the respective wishbone.

713482014.1.74

"^ Sept. 9, 1971

The advantages of mounting the torsion bar stabilizer according to the invention on the vehicle body or dßl. can be seen in the fact that under the influence of longitudinal and lateral forces the torsion bar stabilizer seen in plan view a Pivoting movement around the intersection of the connecting straight lines through the bearing points of the torsion bar stabilizer on the vehicle body with the pivot point of the torsion bar stabilizer on the respective wishbone. This leaves the location of the Wishbone and thus the entire steering geometry unaffected and there are no uie driving characteristics impairing Movements on the wheels. The stabilizer itself still rotates when it compresses and rebounds an axis transverse to the direction of travel. The gimbals that occur on the inclined rubber mounts Movements are relatively small and therefore do not affect the effectiveness of the torsion bar stabilizer.

Details of the invention are explained in the following description of the drawings.

In the drawing, the invention is based on an exemplary embodiment shown, namely show the

Fig. 1-3 each a plan view of an independent wheel suspension of the steered wheels partially in a schematic representation, where in the

1 and 2 each show an already known arrangement of the Torsion bar stabilizer is shown, while the

Fig. 3 shows an arrangement of the torsion bar stabilizer according to the invention.

Sept 9, 1971

In Figs. 1 to 3, the wheels 1 via a suspension arm 2, 2 ¹ and one associated with the suspension arms 2, 2 ^1-roll bar 3, 3 ¹ of the vehicle body 4. 4 ¹ via elastic bearing 5. 5 ^{1 is} attached. pivotally mounted on the vehicle body 4, 4 *. The wishbones 2, 2 ' engage in the lower area of the wheel carrier 6, 6 *. In the case of a double wishbone axle, a wishbone engaging in the upper region of the wheel carrier can serve as a further wheel guide member, not shown in the drawing. In the case of a strut axle, a strut connected to the wheel carrier (not shown) serves as a further wheel guide member.

As can be seen from FIG. 2, the torsion bar stabilizer is ^{laterally not properly held in the elastic bearings 5 1} and therefore executes transverse movements under the influence of longitudinal and lateral forces, as can be seen from the position shown in dashed lines. However, since the torsion bar stabilizer is involved in the wheel guidance, these transverse movements simultaneously cause a movement or displacement of the transverse control arms 2 in opposite directions, as can also be seen from the dashed position. This pivoting of the control arms 2 · results from the fact that the arms of the torsion bar stabilizer 3 · ¹ , which are directed in the longitudinal direction of the vehicle, are not parallel to the direction of travel. Since _{r seen} in the plan view, the tie rods 7 ¹ do not run parallel to the transverse core 2 ¹ , which is particularly unavoidable with rack and pinion steering, the wheels 1 ¹ make steering independent of the steering, unwanted and disadvantageous for the driving properties (straight-line stability) .

71141Ii 14.3. %

Sept 9, 1973

Due to the design of the torsion bar stabilizer according to the invention and its inventive storage on the vehicle body According to FIG. 3, these disruptive influences can be kept away from the steering geometry. The torsion bar stabilizer 3 is in cldn corner areas zv / ischen across to the Faiirzeu & - longitudinally extending part and its obliquely to the longitudinal direction of the vehicle parts each with a Bulge 30 provided so that the axes 8 in the area of the bearings 5 run obliquely to the vehicle longitudinal direction., The inclination of the axes 8 is selected according to the invention so that the intersection 12 of the axes 8 from the The axis of rotation 11 of the torsion bar stabilizer is on the same side as the articulation points 10 of the torsion bar stabilizer on the wishbones. 2.

In the embodiment of the invention according to FIG. 3, the Vedauf of the axes 8 is chosen such that they are approximately perpendicular to the connecting straight line 13 through the bearings 5 aiii the Arilenkpunkt 10 of the Drehscab stabilizer 3 on the handlebars 2 run.

Due to the arrangement of the axles 8 and thus the inclined ones, which according to the invention runs obliquely to the longitudinal direction of the vehicle Arrangement of the axes of rotation of the elastic bearings, the torsion bar stabilizer 3 leads to a lateral displacement by longitudinal and / or lateral forces - a simultaneous .Schwenkbewegung around the intersection 9 of the Prebinding straight line 13 from. 5s only results a slight bending of the arms of the torsion bar stabilizer 3, which extend obliquely to the longitudinal direction of the vehicle, while the position of the wishbones / 2 and thus the entire: Steering geometry unaffected by the movements of the torsion bar stabilizer remain.

[ 7134I2GU.3.74

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Sep 9, 1973 Q

The torsion bar stabilizer 3 continues to rotate around the in the transverse direction of the vehicle when the wheels 1 spring in and out arranged, extending through the bearing points 5 axis 11. The in the elastic elements of the bearing points occurring cardanic movements remain relatively small.

claims ;

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Claims (3)

^. , 9ViSays. Ί573Σ. 1. Independent suspension of the wheels of motor vehicles, especially passenger cars, in which a wheel guide member consisting of a wishbone and a control arm that also serves as a trailing arm or trailing arm, with the wishbone related torsion bar stabilizer, which is elastically mounted on the vehicle body or the like is and connects the wishbones of the two-sided wheel linkages, characterized in that in Seen from above, the axis (8) of the torsion bar stabilizer (3) in the area of its bearings (5) on the vehicle body (4) or the like in each case runs obliquely to the transverse direction of the vehicle »where the intersection (12) is the Axes (8) seen from the axis of rotation (11) of the torsion bar stabilizer is on the same side as the Articulation points (10) of the torsion bar stabilizer on the '' Wishbones (2). 2. Arrangement according to claim 1, characterized in that seen in plan view the axis (8) of the torsion bar stabilizer (3) in the area of its bearing points (5) on the vehicle body (4) or the like. Approximately perpendicular to the connecting straight line (13) through the bearing points (5) with the articulation point (10) of the torsion bar stabilizer runs on the respective wishbone (2). 3. Arrangement according to claims 1 and 2, characterized in that the course of the torsion bar stabilizer (3) in the areas between its part extending in the transverse direction of the vehicle and its part inclined to the longitudinal direction of the vehicle ^ extending parts each have a bulge (30) or the like. Has. 7134120 tu. η