WO2017080744A1

WO2017080744A1 - Rigid-axle suspension for a land vehicle

Info

Publication number: WO2017080744A1
Application number: PCT/EP2016/074529
Authority: WO
Inventors: Jens Heimann; Daniel Wolf
Original assignee: Zf Friedrichshafen Ag
Priority date: 2015-11-10
Filing date: 2016-10-13
Publication date: 2017-05-18
Also published as: DE102015222041A1

Abstract

Rigid-axle suspension for a land vehicle, comprising an axle member (5) that extends in a vehicle transverse direction (y), and at least one axle link (6) on which the axle member (5) is mounted in such a way as to be able to pivot about a first pivot axis (28) extending in a vehicle longitudinal direction (x); the axle member (5) is mounted, by means of the axle link (6), on a vehicle frame (1) in such a way as to be able to pivot about a second pivot axis (7) extending in the vehicle transverse direction (y); the axle member (5) is additionally mounted on the vehicle frame (1) by means of one or more leaf springs (18, 23), the leaf plane (34) or each leaf plane (31, 22) of which lies in a plane (29, 30) encompassing the first swivel axis (28).

Description

Rigid suspension for a land vehicle

The invention relates to a rigid suspension for a land vehicle, having an axle body extending in a vehicle transverse direction and at least one axle guide on which the axle body is pivotably mounted about a first pivot axis extending in a vehicle longitudinal direction

Achslenker is pivotally mounted on a vehicle frame about a second pivot axis extending in the vehicle transverse direction.

In stabilizer axles of land vehicles, the longitudinal guidance of the axle body and the stabilizer effect is taken over by a stabilizer arm, which has two flexurally soft legs and a torsion bar spring connecting them to one another. When one side of the axle body deflects and the other side of the axle body rebounds, the torsion spring between the legs is twisted, so that an additional spring rate is applied to the system, which only acts on roll and thus stabilizes the vehicle frame, to which the axle beam e.g. is articulated via a wishbone. The axle body rotates when rolling around the connection point on the wishbone, resulting in a lateral

Movement of the stabilizer arm and thus leads to a bend of the legs.

EP 0 933 241 B1 discloses a stabilizer for a vehicle having a

A frame comprising a torsion bar spring arranged to extend transversely of the longitudinal direction of the vehicle and relative to the frame of the vehicle by means of a first bearing device disposed in a first end region of the torsion bar spring and by means of a second bearing device

is pivotally mounted, which is arranged in a second end portion of the torsion bar spring, and a first leg which is non-pivotally connected by means of a first connection with the torsion bar in the first end region, and a second leg which is not pivotally connected by means of a second connection Torsion spring is connected in the second end region, wherein the legs are arranged so that they extend substantially in the longitudinal direction of the vehicle and pivotally connected to a wheel axle assembly of the

Vehicle are connected, wherein the torsion bar spring has a longitudinal direction, which intersects the legs at an oblique angle at least in the region of the connections, and wherein the legs in a section transverse to

Viewed longitudinal direction of the vehicle, are arranged such that they extend at least in each case in the region of the first and second connections in a direction which extends obliquely to a vertical direction.

A disadvantage of this solution is in particular the weight of the stabilizer arm. Furthermore, the torsion bar extends in the vehicle transverse direction almost over the entire vehicle width, whereby the space available for other modules space is limited. In addition, the manufacture of the arrangement formed from torsion bar and legs is costly.

Based on this, the invention has the object, a

Starrachsaufhängung of the type mentioned in such a way that at least one or more of the aforementioned disadvantages are avoidable.

This object is achieved by a rigid suspension according to claim 1.

Preferred developments of the rigid suspension are given in the subclaims and in the following description.

The rigid suspension for a land vehicle has a in one

Vehicle transverse direction extending axle and one or at least one Achslenker on which the axle body to a in a

Vehicle longitudinally extending first pivot axis is pivotally mounted, which is pivotally mounted by the wishbone about a second transverse axis extending in the vehicle transverse direction on a vehicle frame, wherein the axle body is additionally articulated by one or more, in particular two, leaf springs on the vehicle frame whose leaf level or leaf levels in or each lie in a plane comprising the first pivot axis.

In this rigid suspension, the leaf spring or take over the leaf springs roll stabilization, so that can be dispensed with a torsion bar. As a result, in particular weight and / or space can be saved. Further is the rigid suspension especially cheaper to produce. Preferably, the rigid suspension has no torsion spring and / or the

Starrachsaufhängung is preferably free of a torsion bar.

The vehicle longitudinal direction runs in particular transversely to the vehicle transverse direction. Furthermore, a vehicle vertical direction preferably extends transversely to the vehicle transverse direction and transversely to the vehicle longitudinal direction. The vehicle transverse direction runs

preferably horizontal. Furthermore, the vehicle longitudinal direction is preferably horizontal. The vehicle vertical direction preferably runs vertically.

The first pivot axis and the second pivot axis point in

Vehicle vertical direction in particular a distance from each other. Preferably, the first pivot axis is arranged in the vehicle vertical direction below the second pivot axis.

According to a first advantageous variant, the, in particular the one, leaf spring is arranged centrally between the ends of the axle body in the vehicle transverse direction, wherein its leaf level extends in particular in the vehicle vertical direction. Preferably, the leaf spring extends in or substantially in the vehicle longitudinal direction.

Advantageously, the plane in which the leaf level of the leaf spring is located in

Vehicle longitudinal direction and / or in the vehicle vertical direction. The leaf spring is preferably arranged at a distance from the first pivot axis. In particular, the leaf spring is arranged in the vehicle vertical direction below the first pivot axis. Preferably, the leaf spring is arranged in the vehicle vertical direction below the axle guide.

According to the first variant, preferably only one or a single leaf spring is provided. Since this leaf spring extends in the vehicle transverse direction but not over almost the entire vehicle width, space is saving. Further, the leaf spring can be formed with a lower weight compared to a torsion spring. Preferably, the axle body is additionally articulated or mounted on the vehicle frame by two trailing arms spaced apart in the vehicle transverse direction. Preferably, the trailing arms take over or a longitudinal guide of the axle body. Preferably, the axle body is guided by the trailing arm, in particular in the vehicle longitudinal direction, on the vehicle frame. As a result, in particular the or a longitudinal guide of the axle body can be achieved and / or improved.

Each trailing arm is preferably pivotably articulated or mounted about a vehicle frame-side pivot axis on the vehicle frame, which extends in particular in the vehicle transverse direction. Alternatively, each trailing arm is e.g. articulated by a vehicle frame side ball joint to the vehicle frame or stored. The vehicle frame side pivot axis or each

Vehicle frame-side ball joint is preferably arranged in the vehicle vertical direction below the first pivot axis and / or below the second pivot axis and / or below the axle guide. Preferably, each trailing arm is articulated or mounted pivotably about an axis body-side pivot axis on the axle body, which extends in particular in the vehicle transverse direction. Alternatively, each trailing arm is e.g. articulated by a achskörperseitiges ball joint on the axle body or stored. The achskorperseitige pivot axis or each

Achskorperseitige ball joint is preferably arranged in the vehicle vertical direction below the first pivot axis and / or below the second pivot axis and / or below the axle guide. In particular, the

Vehicle frame-side pivot axis or the vehicle frame side

Ball joints and the achskorperseitige pivot axis or achskorperseitigen ball joints in the vehicle longitudinal direction at a distance from each other. Advantageously, the leaf spring is pivotable about the vehicle frame-side pivot axis

Vehicle frame articulated or stored. Alternatively, the leaf spring is articulated or mounted, for example by a ball joint on the vehicle frame. Furthermore, the leaf spring is preferably pivotably mounted or mounted on the axle body about the axis body-side pivot axis. Alternatively, the leaf spring is articulated or mounted, for example, by a ball joint on the axle body. The leaf spring and the trailing arm preferably have the same length. In particular, the Leaf spring and trailing arm in vehicle vertical direction hinged or stored at the same height on the vehicle frame.

According to a second advantageous variant, the, in particular the two, leaf springs in the vehicle transverse direction at a distance from each other. In particular, the leaf springs each form a trailing arm and / or the leaf springs form in particular trailing arm. Preferably, the leaf springs or trailing arms take over or a longitudinal guide of the axle body. Preferably, the axle body through the leaf springs or trailing arm, in particular in the vehicle longitudinal direction, on

Vehicle frame led. Preferably, the leaf springs each extend in or substantially in the vehicle longitudinal direction. In particular, the planes in which the leaf levels of the leaf springs are located are each inclined in the vehicle longitudinal direction and / or inclined with respect to the vehicle vertical direction. Advantageously, the planes in which the leaf levels of the leaf springs lie intersect at the location of the first pivot axis. In particular, the first pivot axis lies on the or a line of intersection of the planes in which the leaf levels of the leaf springs lie. The leaf springs are preferably arranged in each case at a distance from the first pivot axis. In particular, the leaf springs are arranged in the vehicle vertical direction respectively below the first pivot axis. Preferably, the leaf springs are in

Vehicle vertical direction respectively disposed below the axle guide. Preferably, the leaf springs in the vehicle transverse direction are each opposite to the first

Swivel axis arranged offset. In particular, the first pivot axis is located in a vehicle longitudinal direction and in the vehicle vertical direction extending high-longitudinal plane or plane of symmetry, which lies in the vehicle transverse direction, preferably in the middle, between the leaf springs. Advantageously, the leaf springs are mirror-symmetrical with respect to the plane of symmetry. The leaf springs preferably have the same length. In particular, the leaf springs are hinged or stored in the vehicle vertical direction at the same height on the vehicle frame.

According to the second variant, two leaf springs are preferably provided. Since these leaf springs in particular form the trailing arm of the rigid suspension, the rigid suspension according to the second variant can be formed with a relatively low weight, since neither additional trailing arm nor a torsion bar spring required are. By dispensing with a torsion spring also space can be saved. Also, the rigid axle suspension according to the second

Variant a relatively simple structure, since the leaf springs do not have a

Torsion bar must be connected together. Furthermore, the fact that the leaf springs preferably each form a trailing arm, in particular a longitudinal guide of the axle body achievable and / or improved by means of the leaf springs. Preferably, the leaf springs are free of a connecting them together

Torsion bar. Preferably, the leaf springs are not interconnected by a torsion bar spring.

Preferably, the trailing arms, in particular in the first and / or in the second variant, respectively extend in or substantially in the vehicle longitudinal direction. The trailing arms are preferably at a distance from the first pivot axis

arranged. In particular, the trailing arms are arranged in the vehicle vertical direction respectively below the first pivot axis. Advantageously, the trailing arm are arranged in the vehicle vertical direction respectively below the axle guide. In particular, the trailing arms in the vehicle transverse direction are each opposite the first

Swivel axis arranged offset. Preferably, the first pivot axis lies in or in a vehicle longitudinal direction and in the vehicle vertical direction

extending high-longitudinal plane or plane of symmetry, which lies in the vehicle transverse direction, in particular centrally, between the trailing arms. Advantageous are the

Trailing arm with respect to the plane of symmetry mirror-symmetrical design. The trailing arms preferably have the same length. In particular, the

Trailing arm in the vehicle vertical direction at the same height hinged or stored on the vehicle frame. Preferably, the trailing arms are free of a them

interconnecting torsion bar spring. Advantageously, the trailing arms are not connected to each other by a torsion bar.

The or each leaf spring is preferably hinged or mounted about a third pivot axis on the vehicle frame, which in particular in

Vehicle transverse direction runs. Alternatively, the or each leaf spring is articulated or mounted, for example by a vehicle frame side ball joint to the vehicle frame. The third pivot axis or the or each vehicle frame side Ball joint is preferably arranged in Fahrzeughochhchtung below the first pivot axis and / or below the second pivot axis and / or below the axle guide. In the first variant, the third pivot axis preferably coincides with the vehicle frame-side pivot axis.

Preferably, the or each leaf spring is pivotally mounted or mounted about a fourth pivot axis on the axle body, in particular in

Vehicle transverse direction runs. Alternatively, the or each leaf spring is e.g. articulated by a achskörperseitiges ball joint on the axle body or stored. The fourth pivot axis or the or each axis body-side ball joint is in Fahrzeughöchhchtung preferably below the first pivot axis and / or below the second pivot axis and / or below the axle guide

arranged. In the first variant, the fourth pivot axis preferably coincides with the axis body side pivot axis. In particular, the third pivot axis or the or the vehicle frame-side ball joints and the fourth pivot axis or the one or the achskörperseitigen ball joints in

Vehicle longitudinal direction at a distance from each other.

Advantageously, the or each leaf spring is hinged or supported by one or a first joint on the vehicle frame, which is for example one or a first elastomeric bearing. Preferably, the or each leaf spring is hinged or supported by one or a second joint on the axle body, which is for example a or a second elastomeric bearing. Preferably, the or each leaf spring is hinged or mounted with a first end or storage location on the vehicle frame and articulated or mounted on the axle body with a second end or storage location. Advantageously, the or each leaf spring is hinged or supported at one of its ends or storage locations by the or the respective or a ball joint and hinged or hinged at its other end or storage location by a hinge joint, the hinge axis extends in particular in the vehicle transverse direction.

According to a first alternative, the first or vehicle frame side

For example, joints each formed as a hinge joint, the hinge axis extends in particular in the vehicle transverse direction. Further, the second or achskörperseitigen joints, for example, each formed as a ball joint, which is in particular the respective achskörperseitige ball joint. According to a second Alternative are the second or Achskörperseitige joints, for example, each as

Hinge joint formed, the hinge axis in particular

Vehicle transverse direction runs. Further, the first or vehicle frame side joints are e.g. each formed as a ball joint, which is in particular the respective vehicle frame side ball joint.

According to one embodiment, the or each leaf spring is rigidly mounted or articulated at least on one side with respect to a rotation about an axis of rotation extending in the vehicle vertical direction. In particular, the or each leaf spring is rigidly mounted or articulated on the vehicle frame with respect to rotation about one or a first axis of rotation extending in the vehicle vertical direction. Preferably, the or each leaf spring is in rotation about one or a second in

Vehicle vertical direction extending axis of rotation rigidly mounted on the axle or hinged. In this way, it can be ensured in particular that a lateral movement of the axle body and / or a pivoting movement of the axle body about the first pivot axis also leads to a bending of the leaf springs.

The or each leaf spring is preferably arranged at a distance from the first pivot axis. In particular, the or each leaf spring is arranged in the vehicle vertical direction below the first pivot axis. Preferably, the or each

Leaf spring arranged in the vehicle vertical direction below the axle guide.

In particular, the or each leaf spring is flat. In the first variant, the plane in which the leaf plane of the leaf spring is located, in particular in the vehicle vertical direction. In the second variant, the planes in which lie the sheet planes of the leaf springs, in particular inclined to

Vehicle vertical direction. Advantageously, in the second variant, each leaf spring is arranged offset in the vehicle transverse direction with respect to the first pivot axis.

Preferably, the or each leaf spring made of plastic or fiber reinforced plastic. Preferably, the or each leaf spring made of glass fiber reinforced plastic. As a result, the or each leaf spring can be formed in particular with a low weight. Although the or each leaf spring can also be made of metal, especially made of steel, but the modulus of elasticity of steel is usually too high in order to achieve optimum roll stabilization can.

According to one embodiment, the thickness of the or each leaf spring changes in the vehicle longitudinal direction, in particular continuously. For example, the thickness of the or each leaf spring decreases from the vehicle frame or vehicle frame side or first storage location to the axle body or axle body side or second storage location. Alternatively, the thickness of the or each leaf spring from the axle body or axle-side or second storage location to the vehicle frame or

vehicle frame side or first storage from. In particular, the thickness of the or each leaf spring decreases from the hinge joint to the ball joint.

As a result, a load optimization can be achieved in particular. The thickness of the or each leaf spring is preferably a thickness transverse to the plane of the page.

According to a development of the wishbone is a wishbone. In particular, the wishbone is articulated to two vehicle transverse direction spaced apart frame-side storage locations on the vehicle frame. For example, the wishbone is at its frame-side storage locations each by a

Elastomer bearing hinged to the vehicle frame. Preferably, the wishbone is hinged to a axle body side storage location on the axle body. For example, the wishbone is hinged at its achskörperseitigen storage location by an elastomeric bearing or hinge on the axle, which is in particular a ball joint. The wishbone preferably comprises two link arms, which are preferably connected to each other at or in the region of the axle-side storage location. From the axle-side storage location, the link arms preferably extend to the frame-side storage locations, wherein the distance between the two control arms in the vehicle transverse direction in particular increases with increasing distance to the axle-side storage location, in particular in the vehicle longitudinal direction. Each link arm preferably has one of the frame-side storage locations at its end facing away from the axle-side storage location. The storage locations are preferably on the corners of a triangle, which is in particular an isosceles triangle, the same length legs preferably meet in the axle-side storage. The axle body is preferably by one or more vehicle springs on

Vehicle frame, in particular resilient, supported and / or with this, in particular resilient, connected. The vehicle springs are for example

Air springs. Preferably, the axle body is further connected by one or more dampers with the vehicle frame, which are also referred to as shock absorbers.

In particular, in each case one or at least one vehicle wheel is rotatably mounted at the ends of the axle body in the vehicle transverse direction. The land vehicle is

preferably a commercial vehicle. In particular, the land vehicle is a

Motor vehicle and / or utility vehicle. Preferably, the direction of travel or normal forward direction of travel of the land vehicle in the vehicle longitudinal direction.

The invention further relates to the use of the aforementioned

Starrachsaufhängung for roll stabilization of the vehicle frame, in particular with wavering axle body, wherein the roll stabilization is preferably carried out by the one or more, in particular by the two, leaf springs.

In addition, the invention relates to a land vehicle with a vehicle frame and at least one rigid suspension which has an axle body extending in a vehicle transverse direction and one or at least one wishbone, on which the axle body is pivotally mounted about a first longitudinal axis extending in a vehicle pivot axis through which Achslenker about a vehicle transverse direction extending second pivot axis pivotally on

Vehicle frame is mounted, wherein the axle body is additionally articulated by one or more, in particular two, leaf springs on the vehicle frame, the leaf level or leaf levels lie in or each in a comprehensive the first pivot axis level. This rigid suspension is preferably the aforementioned rigid axle suspension. In particular, the land vehicle and / or the rigid axle suspension of the land vehicle can be further developed according to all embodiments explained in connection with the rigid suspension. The invention will be described below with reference to preferred embodiments with reference to the drawing. In the drawing show:

Fig. 1 is a plan view of a rigid suspension according to a first

embodiment,

2 is a perspective view of the rigid suspension according to the first embodiment,

Fig. 3 is a side view of the rigid suspension according to the first

embodiment,

4 is a view of the rigid suspension device according to the first embodiment from the direction of the arrow A shown in FIG. 1, wherein several components have been omitted,

5 is a perspective view of a leaf spring of the rigid suspension according to the first embodiment,

6 is a plan view of the leaf spring of FIG. 5,

Fig. 7 is a sectional view of the leaf spring along that of FIG. 6 apparent

Section line B-B and

8 is a schematic representation of a rigid suspension according to a

second embodiment.

FIGS. 1 to 4 show different views and partial views of a rigid suspension according to a first embodiment, wherein a vehicle frame 1 has two extending in a vehicle longitudinal direction x

Side members 2 and 3 and at least one in a transverse to

Vehicle longitudinal direction x extending vehicle transverse direction y extending cross member 4, through which the side members 2 and 3 firmly together are connected. Although only one cross member is shown, preferably a plurality of the side members 2 and 3 are fixedly connected to each other and in

Vehicle transverse direction y extending cross member provided.

On the vehicle frame 1 is an axle body 5 by means of a trained as a triangular control arm 6 about a vehicle transverse direction y extending

Swivel axis 7 pivotally mounted, wherein the wishbone 6 has two link arms 8 and 9, which are fixedly connected to one achskörperseitigen storage location 10, to which the wishbone is connected to the axle body by a hinge 1 1, which is here a ball joint. Starting from the axle body-side storage location 10 takes the distance between the two

Handlebar arms 8 and 9 in the vehicle transverse direction y with increasing distance to the axle body side storage location 10, wherein each of the control arms 8, 9 facing away from the achskörperseitigen storage location 10 end to a

Vehicle frame side storage 12 and 13 ends. Here, the link arm 8 ends at the vehicle frame side storage location 12 and is articulated there by an elastomeric bearing 14 to the vehicle frame 1. Further, the link arm 9 ends on

Vehicle frame side storage location 13 and is articulated there by an elastomeric bearing 15 to the vehicle frame 1. The storage locations 12 and 13 point in

Vehicle transverse direction y at a distance from each other and are arranged with respect to a perpendicular to the vehicle longitudinal direction x and perpendicular to the vehicle transverse direction y extending vehicle vertical direction z at the same height.

With the longitudinal beams 2 and 3, two brackets 16 and 17 are fixedly connected, extending from the longitudinal beams 2 and 3 down. In this case, the holder 16 with the longitudinal member 2 and the bracket 17 with the longitudinal member 3 is firmly connected. Below the longitudinal member 2, a leaf spring 18 is pivotally mounted on the holder 16 by means of a hinge joint 19 about a vehicle transverse direction y extending pivot axis 20, wherein the leaf spring 18 extends in or substantially in the vehicle longitudinal direction x and at a distance to

Swivel axis 20 is articulated by means of a ball joint 21 mounted on the axle 5. Further, a leaf spring 23 is pivotally mounted about the pivot axis 20 below the longitudinal member 3 on the bracket 17 by means of a hinge joint 24, wherein the leaf spring 23 extends in or substantially in the vehicle longitudinal direction x and at a distance from the pivot axis 20 by means of a ball joint 25 is pivotally mounted on the axle 5. The leaf springs 18 and 23 are of equal length and form trailing arms, by means of which the axle body 5 pivotally connected to the

Brackets 16 and 17 and thus mounted on the vehicle frame 1. In addition, the axle body 5 by vehicle springs 26 and damper 27 with the

Vehicle frame 1 connected. The so mounted on the vehicle frame 1

Axle body 5 is also a running in the vehicle longitudinal direction x

Swivel axis 28 pivotally extending in particular through the joint center of the joint 1 1. In other words, the axle body 5, in particular by the hinge 1 1, mounted pivotably about the pivot axis 28 on the wishbone 6.

From Fig. 4 is a view of the rigid suspension from the direction of the arrow A shown in FIG. 1 can be seen, with several components of the rigid suspension were omitted. It can be seen that the leaf plane 31 of the leaf spring 18 is located in a longitudinally x extending plane 29, in which the

Swivel axis 28 runs. Furthermore, it can be seen that the leaf plane 22 of the leaf spring 23 lies in a plane 30 extending in the longitudinal direction x, in which the pivot axis 28 also extends. The pivot axis 28 is thus on the line of intersection of the two planes 29 and 30. A pivoting movement of

Achskörpers 5 about the pivot axis 28, the leaf springs 18 and 23 thus loaded perpendicular or approximately perpendicular to their sheet levels, so that the

Spring characteristics of the leaf springs 18 and 23 can be used in a particularly favorable manner for roll stabilization. Further, the thickness of each leaf spring decreases from the pivot axis 20 to the axle body 5 from.

In Fig. 5 is a perspective view of the leaf spring 18 is shown, which is seen in plan view of Fig. 6. Further, Fig. 7 shows a sectional view of the leaf spring 18 along the apparent from Fig. 6 section line BB. Since the leaf spring 18 has a spatial extent perpendicular to its leaf plane, the leaf plane 31 is here represented by a line which extends centrally through the cross section of the leaf spring 18. The leaf spring 23 is with respect to a pivot axis 28 comprehensive and in the vehicle vertical direction z extending plane of symmetry 32 (see FIG. 4) mirror-symmetrical to the leaf spring 18 constructed.

FIG. 8 shows a schematic representation of a rigid suspension according to a second embodiment, identical or similar features to the first embodiment being denoted by the same reference numerals as in the first embodiment. Instead of two leaf springs, the

Starrachsaufhängung according to the second embodiment, only a single leaf spring 33, the leaf level 34 lies on the plane of symmetry 32. The extending in or substantially in the vehicle longitudinal direction x leaf spring 33 is connected to one end, in particular by means of a hinge joint to a in

Vehicle transverse direction y extending pivot axis 36 pivotally mounted on a fixedly connected to the vehicle body 1 bracket 35 and mounted with its other end, in particular by means of a ball joint, ball joint on the axle 5. Furthermore, the axle body 5, in particular via ball joints,

ball-joint connected with trailing arms 37 and 38 which are mounted pivotably about the pivot axis 36 on the vehicle frame 1. In addition, the axle body 5 by schematically illustrated vehicle springs 26 and damper 27 with the

Vehicle frame 1 connected.

REFERENCE CHARACTERS

vehicle frame

longitudinal beams

crossbeam

axle body

wishbone

swivel axis

control arm

storage location

ball joint

storage location

elastomeric bearings

bracket

leaf spring

Hinge joint

swivel axis

ball joint

leaf level

leaf spring

hinge

ball joint

vehicle spring

damper

swivel axis

level

leaf level plane of symmetry

leaf spring

leaf level

bracket

swivel axis

Trailing arm

Vehicle longitudinal direction

Vehicle transverse direction

Vehicle vertical direction

Claims

claims

1 . Rigid suspension for a land vehicle, with one in one

Vehicle transverse direction (y) extending axle body (5) and at least one

Achslenker (6), on which the axle body (5) around a in a

Vehicle longitudinal direction (x) extending first pivot axis (28) is pivotally mounted by the axle guide (6) about a vehicle transverse direction (y) extending second pivot axis (7) pivotally mounted on a vehicle frame (1), characterized in that the axle body (5) is additionally articulated by one or more leaf springs (18, 23, 33) on the vehicle frame (1), the leaf plane (34) or leaf levels (31, 22) in or in each of a plane comprising the first pivot axis (28) (29, 30) lie.

2. rigid axle suspension according to claim 1, characterized in that the

Leaf spring (33) centrally between the ends of the axle body (5) in

Vehicle transverse direction (y) is arranged and their leaf level (34) in one

Vehicle vertical direction (z) runs.

3. Starrachsaufhängung according to claim 2, characterized in that the axle body (5) additionally by two in the vehicle transverse direction (y) spaced from one another and the longitudinal guide of the axle body (5) taking over trailing arm (37, 38) hinged to the vehicle frame (1) is.

4. rigid axle suspension according to claim 3, characterized in that the

Trailing arms (37, 38) are free from a torsion bar spring connecting them together.

5. rigid axle suspension according to claim 1, characterized in that the

Planes (29, 30), in which the leaf levels (31, 22) of the leaf springs (18, 23) lie, each inclined relative to a vehicle vertical direction (z) and the first pivot axis (28) on a line of intersection of these planes (29, 30 ) lies.

6. Starrachsaufhängung according to claim 1 or 5, characterized in that the leaf springs (18, 23) in the vehicle transverse direction (y) at a distance from each other have and form the longitudinal guide of the axle body (5) receiving trailing arm.

7. Starrachsaufhängung according to claim 5 or 6, characterized in that the leaf springs (18, 23) are free from a torsion bar spring connecting them together.

8. rigid axle suspension according to one of claims 5 to 7, characterized

in that the leaf springs (18, 23) have the same length and are articulated in the or a vehicle vertical direction (z) at the same height on the vehicle frame (1).

9. rigid axle suspension according to one of the preceding claims, characterized in that the or each leaf spring (18, 23, 33) at least one side with respect to a rotation about a vehicle in the vertical direction (z) extending

Rotary axis is stored stiff.

10. rigid axle suspension according to one of the preceding claims, characterized in that the or each leaf spring (18, 23, 33) by a hinge joint (19) on the vehicle frame (1) and by a ball joint (21, 25) on the

Achskörper (5) is articulated.

1 1. Star-axle suspension according to one of the preceding claims, characterized in that the or each leaf spring (18, 23, 33) consists of fiber-reinforced plastic.

12. rigid axle suspension according to one of the preceding claims, characterized in that the or each leaf spring (18, 23, 33) in the or a

Vehicle vertical direction (z) below the axle guide (6) is arranged.

13. Starrachsaufhängung according to one of the preceding claims, characterized in that the axle guide (6) is a wishbone, which is connected to two in

Vehicle transverse direction (y) spaced apart frame-side storage locations (12, 13) is articulated on the vehicle frame (1) and on an axle-body-side storage location (10) on the axle body (5).