DE2144428A1 - TRAINING AND SUSPENSION OF THE STEERED WHEELS OF MOTOR VEHICLES, IN PARTICULAR PASSENGER CARS - Google Patents

Description

21U428

BAVARIAN MOTORS ViERKB AKTIEiTCfESELISUHAEI, MMCHEN 13

3rd September 1971

Training and suspension of the steered wheels of motor vehicles, especially passenger cars

The invention relates to the design and suspension of the steered wheels of motor vehicles, in particular passenger cars, Each wheel consists essentially of an undivided, asymmetrical Laufbett rim and one connected to it Wheel disc, or. Wheel disc or the like consists and with the respective wheel guide members connected to the wheel carrier with the wheel brake in the area of the drop center rim is.

It is well known that the steered wheels of motor vehicles strive for the smallest possible scrub radius to prevent tearing to avoid steering with uneven braking force on the two wheels. Namely, it has a large positive scrub radius the disadvantage that, for example, when the brake pulls on one side, a torque acts on the steering that is controlled by the hand of the Driver must be supported on the steering wheel. This torque is greater, the greater the scrub radius, i.e. the greater is the radius with which the wheel touches you around you in general pivot point closer to the center of the vehicle pivots. This problem occurs particularly in vehicles with anti-lock devices.

To achieve the smallest or even negative scrub radius possible it is known in double wishbone axles, · the guide joint of the lower wishbone approximately at the height of the wheel center Put it as far as possible into the wheel dish. The same applies to the so-called feathered axles, which are also used the guide joint of the handlebar should be arranged as close as possible to the wheel in order to obtain an inclination of the steering axis, which one small scrub radius results.

- 2 '"* ··. · -. ,,., 3098 12/030 U

The structural design or the practical application of such However, wheel suspension is extremely difficult and can only be realized with great effort, which is why in practice usually a relatively large roll radius is taken into account.

In the case of rigid axle constructions, it is Yorteil if the individual masses on the axle are as large as possible from the Have the vehicle center so that the moment of inertia is so large that The stroke and trample natural frequencies of the axis are approximately the same. This requirement is for the driving comfort and driving safety of Meaning.

k Since in modern vehicle construction consistently undivided, asymmetrical Drop-center rims are used and, on the other hand, the largest possible diameter is desired, the wheel brake can be used its largest diameter in relation to the vehicle longitudinal center axis only inside, i.e. * on the one facing the inside of the vehicle Be arranged side of the low bed. However, since the drop center is always offset outwards from the center of the rim, the wheel brake is in the area next to a low bed the rim, relatively far inside the vehicle. Thus, the position of the brake and thus of the wheel carrier determines how far in In the best case, the guide joints of the wheel suspension on the wheel carrier can be moved outwards. However, after these guide joints are the steering axis of the respective wheel - the steering roller

W radius results - determine, the unfavorable position of these guide joints results in an undesirably large positive scrub radius.

The invention is now based on the object of creating a wheel suspension with simple means, in which the smallest or even negative roll radii can be achieved with the resulting known advantages.

To solve this problem, the invention proposes that the low bed on the side facing away from the wheel disc or the like the drop center rim is arranged and the wheel brake with its largest diameter in the area of the drop center rim between Wheel dish and drop center protrude into it.

309812/0304 «3-

It is also proposed according to the invention that the inner diameter of the low bed is dimensioned so that during assembly the wheel can be guided over the wheel brake with a slight lateral displacement or tilting movement.

According to the invention, the valve is on the one facing away from the die bed Side of the drop center rim in a local or circumferential Depression of the drop center rim arranged.

The advantages of the training and suspension according to the invention can be seen in the fact that a steering radius that is as small or even negative as possible is achieved without great kinematic construction effort can be.

Another advantage of the design and suspension according to the invention when used on rigid axles, there is the option of decoupling stroke and trampling vibrations.

Further details of the invention are set out below Description of the drawing explained in more detail.

In the drawing, the invention is based on two exemplary embodiments shown and that shows the

Fig. 1 is a longitudinal view of a wheel suspension means Double wishbones

Fig. 2 is a longitudinal view of a wheel suspension with wishbones and strut

3 shows the brake installation within the drop center rim in different views on an enlarged scale and

4 shows a partial view of the valve installation in the drop center rim.

- 4 -. 309812/0304

2HU28

The wheel 1 consists essentially of an undivided, asymmetrical drop center rim 2 and a wheel disc 3 connected to it . Thus, the wheel brake 5 - which is shown as a disc brake in the exemplary embodiments - can protrude with its largest diameter into the area of the drop center rim 2 between the wheel disc or wheel disk 3 and the drop center 4. As a result, the wheel brake 5 lies outside of the wheel center 6 in relation to the vehicle's longitudinal center axis, and the lower guide ^{joint 8, 8 f of} the respective transverse link 9 '9', which is arranged on the wheel carrier 7 '7', comes as close as possible to the Wheel center 6 to lie. As can be seen from FIG. 1, this results in a scrub radius of size 0. In FIG. 2, the position of the steering axis 10 'results in a negative scrub radius r.

The inner diameter of the deep bed 4 is dimensioned so that the wheel 1 during assembly with a slight lateral displacement or tilting movement over the wheel brake 5 at its largest Can lead diameter. The valve 11 is on the The side of the drop center rim 2 facing away from the drop center 4 is arranged in a local indentation 12 (FIG. 3).

In the embodiment of the invention according to FIG. 4, a W angle valve 11 'is shown, which is arranged in a circumferential indentation 12'. In this exemplary embodiment, the indentation 12 * can be calibrated and used to fit the wheel disk or wheel disk 3.

Patent claims :

- 5 309817 / 03CU

Claims (3)

Γ * September 3, 1971 claims; \ 1] formation and suspension of the steered wheels of motor vehicles -zeugen ^v, in particular passenger cars, each wheel consists essentially of an undivided, single-ended low bed Pelge and a associated with that wheel disc or wheel disk or the like exists. And the particular with the Wheel carrier connected to wheel guide members is arranged with the wheel brake in the area of the drop center rim, characterized in that the bed (4) is arranged on the side of the drop center rim (2) facing away from the wheel disc (3) or the like (5) protrudes with its largest diameter in the area of the drop center pad between the wheel disc and the drop center. 2. Training and suspension according to claim 1, characterized in that that the inner diameter of the deep bed (4) is so dimensioned is that during assembly, the wheel (1) with a slight lateral displacement or tilting movement over the Wheel brake (5) can lead. 3. Training and suspension according to claims 1 and 2, thereby characterized in that the valve (11, 11 ·) on the low bed (4) facing away from the low-bed pelge (2) in a local or circumferential indentation (12, 12 ') of the drop center rim is. 3Ü9812 / O3O /.