DE102014223635A1 - Stabilizer for an axle of a two-lane motor vehicle and two-lane motor vehicle with such a stabilizer - Google Patents

Abstract

The invention relates to a stabilizer for an axle of a two-lane motor vehicle, wherein the stabilizer is formed in several parts and composed of at least one, in a functional installation state in a two-lane motor vehicle extending substantially in the vehicle transverse direction torsion and two at an angle connected to the torsion leg wherein the torsion portion is designed substantially for a torsional stress and the legs substantially for a bending load. The legs have over almost their entire length a cross section with a short side edge and a long side edge. Furthermore, the invention relates to a two-lane motor vehicle with a stabilizer described above.

Description

The invention relates to a stabilizer for an axle of a two-lane motor vehicle, wherein the stabilizer is formed in several parts and composed of at least one, in a functional installation state in a two-lane motor vehicle extending substantially in the vehicle transverse direction torsion and two at an angle connected to the torsion leg wherein the torsion portion is designed substantially for a torsional stress and the legs substantially for a bending load.

Furthermore, the invention relates to a two-lane motor vehicle with such a stabilizer.

A stabilizer is used very often in axles of two-lane motor vehicles, in particular in front axles, for setting the roll spring rate with the aim of increasing the cornering force potential of the axle. For this purpose, a stabilizer provided for this purpose usually has a middle part formed as a torsion section and two legs, which are usually connected in each case at the ends of the torsion section and extend angled away from the torsion section. The torsion portion is usually designed as a torsion spring and can be mounted rotatably about its longitudinal axis on the vehicle body or on the vehicle body and usually extends in a functional installation state in a two-lane motor vehicle substantially in the vehicle transverse direction. The legs act as levers and are usually supported either directly on rubber bearings rubber bearings, for example on the lower arms, or indirectly via a pendulum support, where it is advantageous in most cases, the pendulum support each at their ends via ball joints , d. H. without rubber mount, to tie.

The stabilizer causes in such a functional installation state, a coupling of the spring movement of the opposite wheels of the axle, d. H. a coupling of the left wheel with the right wheel.

When jouncing a wheel, especially when wechelseitigem input or rebound of the right and left wheels, the stabilizer causes the opposite wheel also rebounds or also lowered during rebound. This counteracts the rolling of the vehicle body or the vehicle body when cornering. The legs of the stabilizer are subjected to bending and the torsion section to torsion. About the stiffness of the stabilizer, in particular on the torsional stiffness of the central part, the coupling of the spring movement of the left wheel can be adjusted with the right wheel of the axle. With the aid of the stabilizer, wheel load differences can thus be reduced and the lateral force guidance potential of an axle can be improved. With simultaneous compression or rebound of both wheels, the stabilizer does not come into action.

Generic stabilizers are basically known from the prior art in numerous embodiments. For example, is from the DE 10 2011 085 029 A1 a stabilizer made of fiber-reinforced plastic known, the cross-sectional geometry, the wall thickness and the fiber flow are adapted inter alia to the expected loads. In addition, it is known, for example from the DE 10 2010 035 524 A1 to form the torsion portion such that a particularly high moment of resistance against torsion is achieved and the legs in such a way that a particularly high moment of resistance to bending is achieved.

From the latter DE 10 2010 035 524 A1 as well as from the DE 20 2010 002 802 U1 is also known to produce the stabilizer composed of several individual parts, in particular if the torsion portion and / or the legs are made of fiber-reinforced plastic, wherein in the already mentioned several times DE 10 2010 035 524 A1 is disclosed to provide a metallic connector for connecting the Torsionsabschnitts with the legs.

The object of the present invention is to provide an improved stabilizer which, on the one hand, has the highest possible degree of material utilization, ie. H. whose geometry is adapted as possible to the expected loads, and on the other hand at the same time easy and can be produced with little effort.

This object is achieved by a stabilizer with the features of claim 1 and by a two-lane motor vehicle with the features of claim 13. Advantageous and preferred embodiments of the invention are the subject of further claims and are explained in more detail below. The wording of the claims is incorporated herein by express reference.

A stabilizer according to the invention is characterized in that the legs have over almost their entire length a cross section with a short side edge and a long side edge.

For this purpose, the leg cross-section may be designed, for example, elliptically or the like, in which case the short side edge of the short axis corresponds to the ellipse and the long side edge of the long axis.

However, particularly preferably, the legs have a substantially rectangular cross-section.

In general, it is advantageous if the legs have the rectangular cross section in each case over almost its entire length. However, this depends on the respective, expected loads, in particular the respective expected bending loads. Of course, the cross section may also be formed rectangular only in a portion of a leg. The rectangular cross section can be constant over almost the entire length of the leg, d. H. immutable over the thigh length, or changeable, d. H. be larger or smaller or the short side edge of the thigh and / or the long side edge of the thigh can be longer and shorter.

Preferably, the length of the long side edge of the cross section of the leg is at least 1.5 times the length of the short side edge of the leg cross section, in particular 2 times, particularly preferably 3 times.

Preferably, the legs are solid. In some cases, however, it may be advantageous if the legs are each formed at least partially, in some cases in particular completely, by a hollow profile. Of course, the legs may also be foamed or have regions of foam, in particular made of metal foam, or have a honeycomb structure or the like.

The torsion section preferably has at least one straight section and / or is essentially straight, wherein the torsion section preferably has at least partially a round, in particular a circular or an annular cross-section.

For a particularly advantageous ratio of stiffness to weight, the stabilizer has fiber-reinforced plastic and / or is produced therefrom, wherein preferably at least the torsion section and / or the legs have fiber-reinforced plastic and / or are produced therefrom. If the stabilizer is at least partially made of fiber-reinforced plastic, the orientation of the fibers in the fiber-reinforced plastic is preferably adapted to the expected loads, d. H. optimized in this regard.

Due to the fact that the stabilizer is composed of several individual parts, a stabilizer according to the invention can be particularly easily adapted to the expected loads. This is particularly advantageous if individual parts are made of fiber-reinforced plastic, since it is possible without much effort to adjust the fiber orientation of the individual parts, in particular in the torsion and / or legs, to the expected loads.

In a preferred embodiment, the stabilizer is designed such that in a functional installation state in a motor vehicle, the rectangular cross-section of the legs is oriented such that the short side edge of the rectangular cross section is substantially in the vehicle vertical direction or slightly inclined thereto and the long side edge of the rectangular Cross section substantially in the vehicle transverse direction or slightly inclined to this. Ie. Preferably, the stabilizer is designed such that in a functional installation state, the short side edge of the rectangular cross section is parallel to an expected bending force, in this case particularly preferably approximately parallel to a wheel load, in particular a vertical wheel load.

By such a design of the stabilizer or such a proposed arrangement of the stabilizer in a functional installation state in a motor vehicle, with a suitable choice of material and dimensioning of the stabilizer, in particular if at least the torsion is made of a fiber-reinforced plastic, in a simple manner, a stabilizer be provided, on the one hand has a high torsional stiffness in Torsionsabschnitt and thus allows a high roll spring rate, and on the other sufficiently flexible, but still has the strength requirements fulfilling leg, so that a required for a comfortable ride, sufficiently soft Radfederung can be realized.

Preferably, the legs are each connected to the torsion section by means of a connecting device, wherein the torsion section and the legs preferably each have a connection region and are connected therein with the connection device, wherein in particular one end region of the torsion section and / or the leg forms the connection region.

The connecting device is particularly preferably at least partially made of metal, in particular completely. Of course, the connecting device may also be made of a different material, for example of a fiber-reinforced Plastic such as SMC (Sheet Molding Compound) or the like, or be made of a combination of several materials, for example made of plastic encapsulated metal.

In a particularly preferred embodiment, the connecting device is designed for a combined torsional and bending stress, wherein the connecting device is preferably designed such that forces acting on the stabilizer are respectively transmitted to the connecting device with a harmonious transition from the torsion section and / or the leg and / / or each harmoniously transferred from the connecting means on the torsion and / or the leg.

By such a connecting device, in particular when the connecting device is designed such that acting on the stabilizer forces are transmitted in each case with a harmonious transition from Torsionsabschnitt and / or leg into the connecting device or vice versa, force peaks can be avoided, resulting in a particularly weight-optimized stabilizer can be prepared.

In a particularly preferred embodiment, the connecting device is a sleeve or a type of sleeve, each having a receiving area for receiving the Torsionsabschnitts and a leg, wherein the Torsionsabschnitt and the legs are preferably inserted in each case with their connection area in the receiving area. Of course, the connection device can also have one or more corresponding pins or the like as "receiving area" and can be inserted into the end area of the torsion section and / or the legs, respectively.

For a possible harmonic power transmission from the legs in the Torsionsabschnitt and vice versa, the connecting means are preferably designed such that the receiving areas for the end portions of the Torsionsabschnitts and the legs is adapted as well as possible to the geometry of the end portions, wherein the receiving areas of the connecting means with the End regions each form the largest possible contact surface, so that the forces to be transmitted are transmitted over the largest possible area and thereby largely distributed, so that in particular local force peaks can be avoided.

Particularly preferably, in particular in addition, the receiving areas of the connecting means for the torsion portion and the legs are connected to each other over the largest possible contact area, so that the forces to be transmitted, d. H. distribute the forces to be transmitted from the legs into the torsion section and vice versa to as large a contact area as possible, so that power peaks can be avoided.

Under a sleeve is understood in this context, a component for connecting two separate components, d. H. a connector, wherein the sleeve does not have to be integral, but also by two or more, interconnected, in particular clamped together or screwed components, for example, by appropriately trained, oppositely arranged plates may be formed.

In a preferred embodiment, the torsion portion and / or one leg in each case is screwed to the connecting device, the connecting device preferably having at least one internal thread and the torsion portion and / or the leg a corresponding bore. Of course, the torsion portion and / or the leg may each have an internal thread and the connection means a bore or all components each have an internal thread or in each case a bore.

In a particularly preferred embodiment, the torsion portion and / or one leg is clamped to the connecting device, wherein the torsion portion and / or the leg is preferably additionally screwed and / or glued to the connecting device. By an addition to the jamming existing screwing and / or bonding of the torsion and / or the legs are held not only by means of frictional engagement of the connecting device, but are also additionally secured form-fit or cohesive. This allows a particularly strong, stable and resilient connection between the torsion and the legs can be achieved.

In a particularly advantageous embodiment, the torsion portion and / or each leg is positively connected to the connecting device, in particular alternatively or additionally, preferably in addition to a screw connection, gluing or jamming. To produce the positive connection, the torsion section in the connection region preferably has a polygonal profile, in particular an external polygonal profile, an open circular profile, a profile having a plurality of circular ring segments or a leaf-shaped profile, and the connecting device is correspondingly corresponding to the connection region of the torsion section educated.

A polygonal profile has proven to be advantageous, since high torsional forces can be transmitted with this without expensive additional measures.

But also a torsion section, which has a plurality of tab-shaped circular ring segments or pins for producing a positive connection in the connection region, in particular for producing a torsion-proof connection with the connection device, has proven to be advantageous.

In an alternative, but also preferred embodiment, the legs each have at least one scrim, preferably made of a fiber-reinforced plastic, wherein the connecting means is formed by at least one scrim, preferably by all the scrim of the leg, and the scrim in each case wound around the connecting portion of the Torsionsabschnitts is and the matrix material of the Geleges is firmly connected to the Torsionsabschnitt, preferably by a material connection.

A scrim is a fabric composed of one or more rovings, wherein a roving is a bundle of parallel, stretched fibers. At the crossings, the rovings are usually fixed. The fixation is carried out either by material adhesion, usually by means of a matrix material, or mechanically, for. B. by positive locking, for example by sewing or embroidery. A distinction is usually made between monoaxial or unidirectional clutches resulting from the fixation of a group of parallel rovings, biaxial clutches in which two sets of parallel rovings are fixed in the direction of two axes and multiaxial clutches in which several pairs of parallel rovings move in different directions Axes are fixed. Multiaxial layers with fibers which are oriented perpendicular to the laminate plane have a particularly advantageous delamination and impact behavior.

The fiber layers in multi-layered fabrics can all have different orientations, also consisting of different fiber densities and different fiber finenesses. In contrast to fabrics, which result from the interweaving of continuous fibers, for example by the weaving of rovings, scrims have as reinforcing structures in fiber-plastic composites usually better mechanical properties, since the fibers are in a stretched form and thus no additional structural strain is present and the Alignment of the fibers can be defined specifically for the particular application. Of course, in a stabilizer according to the invention instead of a Geleges and in addition to an opportunity also be provided a tissue.

Particularly suitable as fibers are glass fibers, aramid fibers or carbon fibers or carbon fibers, in particular HD, HM or UHM carbon fibers (high density, high modulus or ultra high modulus carbon fibers) or a combination thereof. However, in some applications it may also be advantageous to use natural fibers such as flax hemp or sisal fibers, nylon fibers, steel fibers, basalt fibers or boron fibers, or a combination thereof.

In this case, the matrix material of the fabric is preferably a thermoplastic or thermosetting material, for example a polysulfone or an epoxy resin, and in particular adhesively bonded to the torsion portion. Ie. the legs need not be clamped or screwed by means of the connecting device with the Torsionsabschnitt, but the scrim is in each case so wound in the connecting region to the torsion and connected thereto, that the legs are firmly connected to the Torsionsabschnitt. This means that the connections or the connection devices between the torsion section and the legs are already produced during the production of the legs and are respectively formed by the or the scrim of the legs.

In a particularly advantageous embodiment, the stabilizer on a torsion, which is at least partially formed by an open circular profile, d. H. of a hollow profile with an open circular ring cross-section, preferably with an approximately C-shaped cross section, wherein preferably the torsion portion is formed over its entire length by such a profile.

Such a profile is particularly advantageous because it has a particularly advantageous torsional stiffness to weight ratio and with the open circular ring cross sections at the ends of the torsion can be made in a simple manner, a positive, torsion-resistant connection.

To connect the stabilizer to the vehicle body, the stabilizer preferably has a connection device, wherein the connection device is preferably integrated into the connection device. The connection device may comprise a plurality of connection elements, in particular at least one bearing surface and / or a holder, for example in the form of a holding bracket.

Of course, individual connection elements or the entire Connecting device also be integrated into the torsion and / or the legs.

Particularly advantageous is a connection device has been found, which has a built-in connection device bearing surface, via which the stabilizer in the region of Torsionsabschnitts by means of a known from the prior art retaining clip or a clamp rotatably attached to the vehicle body or the vehicle body can be. Of course, the bearing surface may alternatively be applied to the torsion portion or be formed by this.

Preferably, the connection device and / or a corresponding connection element is designed as a plastic injection molded part and in particular injected or sprayed onto at least one component of the stabilizer, preferably on the connection device and / or on the torsion section and / or the legs. Of course, the connection device may also be made of fiber-reinforced plastic or at least partially consist thereof. The connection device or a connection element can also be connected by an additional wrapping with a scrim with the remaining part of the stabilizer and / or be formed by an additional scrim, which is wound accordingly.

Ie. In a preferred embodiment, a stabilizer according to the invention has a metallic connecting device and a connecting device, preferably made of plastic, for example in the form of a bearing surface sprayed onto the torsion section.

In a particularly preferred alternative embodiment, the connection device is integrated into the metallic connection device, in which case, for example, a bearing surface made of plastic, in particular of an elastomer, is sprayed onto the connection device instead of the torsion section.

A two-lane motor vehicle according to the invention is characterized in that it has a stabilizer according to the invention.

These and other features will become apparent from the claims and from the description also from the drawings, wherein the individual features in each case alone or more in the form of sub-combinations in one embodiment of the invention be realized and represent advantageous and inherently protectable versions for which protection is claimed here.

In the following the invention will be further explained with reference to a preferred embodiment, the invention being schematically illustrated in the accompanying drawings. 1 shows a section of a first embodiment of a stabilizer according to the invention, 2 a second embodiment, 3 a third embodiment, 4a a fourth embodiment and 4b in an enlarged view of the end portion of the Toriosnabschnittes of the stabilizer 4a , 5a shows a detail of a fifth embodiment of a stabilizer according to the invention, 5b the stabilizer off 5a in perspective as a whole, 6 shows a section of a sixth embodiment and 7a a section of a seventh embodiment, wherein in this illustration, in addition, a connection device for fixing the Torsionsabschnittes is shown on the vehicle body. 7b shows the presentation 7a without the connection device. Essential to the invention may be all features described in more detail.

The in 1 illustrated section of a stabilizer according to the invention 10 includes a torsion section 11 , which is formed by a hollow profile with a circular ring cross-section, that is, by a tube made of fiber-reinforced plastic, and two legs 12 of which only one is shown here recognizable, and which are also formed of fiber-reinforced plastic, wherein the legs 12 According to the invention, each have a rectangular cross section over almost its entire length. Of course, in particular the Torsionsabschnitt 11 and the thighs 12 be made of a different material or another combination of materials, such as steel or the like. However, fiber reinforced plastic has a particularly good weight-stiffness ratio and is therefore particularly advantageous.

The circular cross-section of the torsion section 11 causes in relation to its weight a high torsional stiffness, so that with such a stabilizer 10 whose torsion section 11 extends in a functional installation state in the vehicle transverse direction, ie in y-direction, high Wankfederraten can be achieved.

The thigh 12 each extend angled from the Torsionsabschnitt 11 away, in this case, approximately at an angle of 45 ° to the vehicle transverse direction to the vehicle interior-outside, based on a functional installation state in a two-lane motor vehicle, wherein the legs 12 extend substantially in the xy plane in this embodiment.

The thigh 12 In this case, in each case over their entire length a rectangular cross section with a long side edge with the length b and a short side edge with the length h, wherein the legs 12 are each formed such or the long side edge and the short side edge are arranged such that the legs 12 sufficiently, especially adequately, flexible with respect to in a functional installation state via the wheels in the legs 12 introduced vertical forces are, which are symbolized by the force F, whereby a particularly high ride comfort, especially a harmonious, comfortable feeling on and rebound behavior can be achieved.

So that the thighs 12 in a functional installation state of a stabilizer according to the invention 10 are sufficiently, particularly adequately, flexible with respect to the forces acting in the vertical direction F, the stabilizer is designed such that the short side edges of the legs 12 Accordingly, in a functional installation state respectively corresponding to substantially parallel to the forces F, ie, substantially in the z-direction and the long side edges at right angles to this, ie preferably in the x-direction, in which case the length b of the long side edge of the Cross-section of the leg is twice the length h of the short side edge of the leg cross-section. Of course, other ratios of the lengths of the side edges b / h than 2 times are conceivable, depending on the desired bending behavior, in particular the desired bending stiffness or required for setting the desired bending behavior area moment of inertia of the leg cross-section.

At the in 1 embodiment shown are the Torsionsabschnitt 11 and the thighs 12 each via a metallic connection device 13 , which is a kind of sleeve, interconnected. These are each the end areas 14 of the torsion section 11 as well as one end area each 15 a thigh 12 in a corresponding, corresponding receiving area of the connecting device 13 plugged in and in this case by means of screws 16 secured or fixed to the connecting devices 13 connected. For this purpose, the connecting devices 13 each corresponding internal thread and the Torsionsabschnitt 11 and the thighs 12 each corresponding holes, leaving the screws 16 each like a safety pin in the end areas 14 and 15 of the torsion section 11 and the thigh 12 can be introduced.

The stabilizer 10 , in particular the connecting device 13 , is especially in the area around the connection device 13 designed around that over the thighs 12 in the stabilizer 10 introduced vertical forces F as harmonious as possible, ie without significant jumps in the force or torque curve, in the connecting device 13 be initiated and from this as harmonious as possible in the Torsionsabschnitt 11 be transferred and vice versa.

2 shows a section of a second embodiment of a stabilizer according to the invention 20 , where the stabilizer 20 only in the connecting devices 23 from the in 1 shown, stabilizer according to the invention 10 different. At the in 2 embodiment shown are the connecting devices 23 Although each also designed as a sleeve and each have a receiving area for an end 14 of the torsion section 11 on, as well as each for the end area 15 a thigh 12 ,

The connecting devices 23 are in this case, however, by two, with each other by means of screws 26 formed strained plates, between which the end portions 14 and 15 each are trapped. About the screws 26 the required clamping force can be applied. In addition, the torsion section 11 and the thighs 12 each still in their end areas 14 respectively. 15 with the connecting devices 23 bonded. The additional bonding not only results in a higher strength and thus a safer connection, but with the correct version also improved corrosion protection. Of course, in place of the screws 26 Other fasteners, such as rivets or the like, are used.

3 shows a section of a third embodiment of a stabilizer according to the invention 30 , wherein in this stabilizer 30 , unlike the two previous stabilizers 10 and 20 from the 1 and 2 , the torsion section 31 is formed by a hollow polygonal profile, more precisely by a hollow hexagonal profile, and not by a hollow profile with a circular ring cross section.

The connecting devices 33 are designed correspondingly corresponding. Opposite in the 1 and 2 shown embodiments, this stabilizer 30 the advantage that in addition between the Torsionsabschnitt 11 or its end regions 34 and the connecting devices 33 a positive connection is made, which is the transmission of greater torsional forces from the legs 12 on the torsion section 11 allows.

In particular, slippage of the Torsionsabschnittes 11 within the connection devices 33 be easily prevented in this way, so that in some cases on a press or shrink connection and / or additional bonding for additional fixation of the end portion 34 with the connecting devices 33 can be waived. Of course, however, a bond can also be provided here, in particular for the production of a tightness or for reasons of corrosion protection.

4a shows a section of a fourth embodiment of a stabilizer according to the invention 40 , where this stabilizer 40 from the in the 1 and 2 shown stabilizers 10 and 20 , thereby distinguishing that the end areas 44 of the torsion section 41 and correspondingly, the connection means 43 are designed differently, which is based on 4b , which has an end area 44 shows in an enlarged view, is easy to see.

This stabilizer 40 points in the end areas 44 of the torsion section 41 three tab-like or leaf-shaped circular ring segments 44a . 44b and 44c on which in the connecting devices 43 are each inserted in corresponding recesses. For a particularly strong connection with the connecting devices 43 are the three tabs 44a . 44b and 44c each with the connecting device 43 additionally glued.

This can also be ensured in a simple manner, the transmission of torque. Ie. in a functional state of installation of the stabilizer 40 can thus via the connecting devices 43 in a simple way from the wheels to the thighs 12 introduced vertical forces F, which is a bend of the legs 12 cause, in the torsion section 11 be transmitted.

The 5a and 5b show a further embodiment of a stabilizer according to the invention 50 , in which 5b the stablizer 50 as a whole in perspective shows and 5a like the previous ones 1 to 4b , only a section, wherein in this embodiment, the stabilizer 50 a torsion section 51 has, which is formed by a hollow profile with an open circular ring cross-section or by a C-shaped profile. This is especially in 5a good to see.

The connecting devices 53 this stabilizer according to the invention 50 are also corresponding to the Torsionsabschnitt 51 formed and each have a receiving area, in each of which the end portions 54 of the torsion section 51 , which are also formed by the C-shaped profile, are inserted. To increase the strength of the connection between the Torsionsabschnitt 51 and the connecting devices 53 is the torsion section 51 in this embodiment, in each case additionally with the connecting device 53 bonded.

The thigh 12 are each additionally by a screw 16 secured, as in the embodiments described above. Of course, the screws can 16 with appropriate design of their end portions 15 as well as corresponding design of the connection device 53 and / or corresponding alternative or additional measures, such as a bond, also eliminated.

Such a stabilizer according to the invention 50 can be made in a particularly simple manner, since no additional processing of the end 54 of the torsion section 51 is required, and is characterized by the C-shaped torsion section 51 , By a particularly low weight with high torsional stiffness in Torsionsabschnitt 51 out.

6 shows a section of a sixth embodiment of a stabilizer according to the invention 60 , In this embodiment, the connection means 63 no separate component in the form of a metallic connection device in the manner of a sleeve, as in the previous embodiments, but in each case by the legs 62 be formed.

The thigh 62 have several clutches 67 made of fiber-reinforced plastic, in which case in each case the outermost layer 67 around the end area 14 of the torsion section 11 is wound around and firmly connected to it and thereby the connecting device 63 forms. Of course, more than one clutch can each 67 , in particular all the eggs 67 be wrapped around the end portion of the torsion portion and form a connection means.

The torsion section and the legs of a stabilizer according to the invention can of course also be connected to one another and / or additional ways and / or additionally fastened, in particular by differently configured connecting devices. For example, the torsion portion and the legs may be glued to the connecting means and / or also with each other and / or be pressed or shrunk into the connecting means.

Of course, all of the stabilizer connection devices described are not limited to use in stabilizers having legs of rectangular cross section, but can in principle be used for any leg cross section, such as round or oval leg cross sections, for a suitably adapted configuration of the leg receiving area like. Ie. It may also be provided a stabilizer with a different leg cross-section than a rectangular, having one of the described connection means.

The same applies to the described embodiments of the Torsionsabschnitts, in particular for the embodiments of the Torsionsabschnittes as polygonal hollow profile and as a hollow profile with an open circular ring cross-section. These can of course also be used in stabilizers with legs which have no rectangular cross-section.

The 7a and 7b each show a section of another embodiment of a stabilizer according to the invention 70 In this embodiment, in the torsion section 71 each in the region of the ends of a connection device in the form of a storage area 74a is integrated. The storage areas 74a are each for storage or connection of the stabilizer 70 , in particular of the torsion section 71 , formed on the vehicle body or the vehicle body. About a headband 78 which is known in principle from the prior art and exemplified in 7a is shown, the stabilizer 71 rotatably mounted on the vehicle body or the vehicle body.

The storage areas 74a are in this case each case by a in the end 74 of the torsion section 71 , directly to the connection areas 74b adjacent spritzes or to the Torsionsabschnitt 71 formed around molded elastomer.

With appropriate thickness of the applied layer in the region of the bearing surface 74a and with appropriate choice of material, in some cases, a commonly used in the art stabilizer bearing, which is usually used in the headband and enclosing the stabilizer omitted.

By integrating the storage areas 74a in the end area 74 , which for the best possible connection with the connecting device 73 at least in the connection area 74b usually has to be reworked, can be integrated into the stabilizer with little additional effort a simple and cost-effective connection devices or attachment elements. Of course, the storage areas 74a but also independent of the end areas 74 be educated.

Furthermore, the bearing surfaces can alternatively also be integrated into the connecting device, i. H. be sprayed on this. Furthermore, of course, also conceivable to integrate the headband in the stabilizer, preferably in which this is also integrated into the connecting device, in particular molded.

All described stabilizers according to the invention 10 . 20 . 30 . 40 . 50 . 60 and 70 are characterized by the fact that they allow flexible adaptations to the desired stiffnesses, in particular an optimum compromise of high roll spring rate, ie high torsional rigidity of the torsion section 11 . 31 . 41 . 51 respectively. 71 , and high comfort, ie sufficiently soft leg 12 respectively. 62 ,

Of course, a variety of modifications, in particular of structural modifications, to the illustrated embodiment possible without departing from the content of the claims.

LIST OF REFERENCE NUMBERS

10, 20, 30, 40, 50, 60, 70

Stabilizer according to the invention

11, 31, 41, 51, 71

torsion

12, 62

leg

13, 23, 33, 43, 53, 63, 73

connecting device

14, 34, 44, 54, 74

End region of the torsion section

44a, 44b, 44c

Tabs in the end area

15

End of the thigh

16, 26

screw

74a

storage area

74b

connecting area

78

headband

b

Length of the long side edge of the thigh

H

Length of the short side edge of the thigh

F

vertical force

x

Vehicle longitudinal direction

y

Vehicle transverse direction

z

Vehicle vertical direction

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102011085029 A1 [0006]
• DE 102010035524 A1 [0006, 0007, 0007]
• DE 202010002802 U1 [0007]

Claims (13)

Stabilizer ( 10 . 20 . 30 . 40 . 50 . 60 . 70 ) for an axle of a two-lane motor vehicle, the stabilizer ( 10 . 20 . 30 . 40 . 50 . 60 . 70 ) is formed of several parts and from at least one, in a functional installation state in a two-lane motor vehicle substantially in the vehicle transverse direction (y) extending torsion and two at an angle with the Torsionsabschnitt ( 11 . 31 . 41 . 51 . 71 ) connected thighs ( 12 . 62 ), wherein the torsion section ( 11 . 31 . 41 . 51 . 71 ) is designed essentially for a torsional stress and the legs ( 12 . 62 ) substantially for a bending load, characterized in that the legs ( 12 . 62 ) over almost their entire length have a cross section with a short side edge (h) and a long side edge (b). Stabilizer ( 10 . 20 . 30 . 40 . 50 . 60 . 70 ) according to claim 1, characterized in that the legs ( 12 . 62 ) have a substantially rectangular cross section with a short side edge (h) and a long side edge (b) over almost its entire length. Stabilizer ( 10 . 20 . 30 . 40 . 50 . 60 . 70 ) according to claim 1 or 2, characterized in that the stabilizer ( 10 . 20 . 30 . 40 . 50 . 60 . 70 ) is designed such that in a functional installation state in a motor vehicle, the rectangular cross-section of the legs ( 12 . 62 ) is oriented such that the short side edge (h) of the rectangular cross section extends substantially in the vehicle vertical direction (z) or slightly inclined thereto, and the long side edge (b) of the rectangular cross section substantially in the vehicle transverse direction (y) or slightly inclined thereto , Stabilizer ( 10 . 20 . 30 . 40 . 50 . 60 . 70 ) according to one of the preceding claims, characterized in that the legs ( 12 . 62 ) each by means of a connecting device ( 13 . 23 . 33 . 43 . 53 . 63 . 73 ) with the torsion section ( 11 . 31 . 41 . 51 . 71 ), wherein the torsion section ( 11 . 31 . 41 . 51 . 71 ) and the thighs ( 12 . 62 ) preferably each have a connection region and in this with the connecting device ( 13 . 23 . 33 . 43 . 53 . 63 . 73 ), wherein in particular in each case an end region ( 14 . 34 . 44 . 54 . 74b ; 15 ) of the torsion section ( 11 . 31 . 41 . 51 . 71 ) and / or the thigh ( 12 . 62 ) forms the connection area. Stabilizer ( 10 . 20 . 30 . 40 . 50 . 60 . 70 ) according to claim 4, characterized in that the connecting device ( 13 . 23 . 33 . 43 . 53 . 63 . 73 ) is designed for a combined torsional and bending stress, wherein the connecting device ( 13 . 23 . 33 . 43 . 53 . 63 . 73 ) is preferably designed such that on the stabilizer ( 10 . 20 . 30 . 40 . 50 . 60 . 70 ) acting forces (F) each with a harmonic transition from the torsion ( 11 . 31 . 41 . 51 . 71 ) and / or from the thigh ( 12 . 62 ) into the connection device ( 13 . 23 . 33 . 43 . 53 . 63 . 73 ) and / or in each case harmonically from the connection device ( 13 . 23 . 33 . 43 . 53 . 63 . 73 ) on the torsion section ( 11 . 31 . 41 . 51 . 71 ) and / or the thigh ( 12 . 62 ) be transmitted. Stabilizer ( 10 . 20 . 30 . 40 . 50 . 70 ) according to claim 4 or 5, characterized in that the connecting device ( 13 . 23 . 33 . 43 . 53 . 73 ) is a sleeve, each having a receiving area for receiving the Torsionsabschnitts ( 11 . 31 . 41 . 51 . 71 ) and a thigh ( 12 ), wherein the torsion section ( 11 . 31 . 41 . 51 . 71 ) and the thigh ( 12 ) preferably each with their connection area ( 14 . 34 . 44 . 54 . 74b ) are plugged into the receiving area. Stabilizer ( 10 . 20 . 30 . 40 . 50 . 70 ) according to one of claims 4 to 6, characterized in that the torsion section ( 11 . 31 . 41 . 51 . 71 ) and / or one leg each ( 12 ) with the connection device ( 13 . 23 . 33 . 43 . 53 . 73 ) is bolted, wherein the connecting device ( 13 . 23 . 33 . 43 . 53 . 73 ) preferably has at least one internal thread and the torsion section ( 11 . 31 . 41 . 51 . 71 ) and / or the thigh ( 12 ) a corresponding hole. Stabilizer ( 10 . 20 . 30 . 40 . 50 . 70 ) according to one of claims 4 to 6, characterized in that torsion section ( 11 . 31 . 41 . 51 . 71 ) and / or one leg each ( 12 ) with the connection device ( 13 . 23 . 33 . 43 . 53 . 73 ) is clamped, wherein the torsion section ( 11 . 31 . 41 . 51 . 71 ) and / or the thigh ( 12 ) preferably additionally with the connecting device ( 13 . 23 . 33 . 43 . 53 . 73 ) is screwed and / or glued. Stabilizer ( 10 . 30 . 40 . 50 . 70 ) according to one of claims 4 to 8, characterized in that the torsion section ( 11 . 31 . 41 . 51 . 71 ) and / or one leg each ( 12 ) with the connection device ( 13 . 33 . 43 . 53 . 73 ) is positively connected, preferably in addition to a screw connection, gluing or jamming, wherein for the production of the positive connection of the torsion ( 11 . 31 . 41 . 51 . 71 ) in the connecting region preferably has a polygonal profile, in particular an external polygonal profile, an open circular profile, a multi-annular segments exhibiting profile or a sheet-shaped profile, and wherein the connecting device ( 13 . 33 . 43 . 53 . 73 ) corresponding to the connection region of the torsion section ( 11 . 31 . 41 . 51 . 71 ) is trained. Stabilizer ( 60 ) according to claim 3, characterized in that the legs ( 62 ) at least one clutch ( 67 ) of a fiber-reinforced plastic, wherein the connecting device by at least one scrim ( 67 ) is formed, preferably by all the scrim of the leg ( 62 ), and the clutch ( 67 ) of the thigh ( 62 ) in each case around the connection region of the torsion section ( 11 ) and the matrix material of the gel ( 67 ) fixed to the torsion section ( 11 ) connected is. Stabilizer ( 50 ) according to one of the preceding claims, characterized in that the torsion section ( 51 ) is at least partially formed by an open circular profile. Stabilizer ( 70 ) according to any one of the preceding claims, characterized in that the stabilizer ( 70 ) a connection device ( 74a . 78 ) for the connection of the stabilizer ( 70 ) on the vehicle body. Two-lane motor vehicle with a stabilizer, characterized in that the stabilizer is designed according to one of claims 1 to 12.

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