Active roll stabilizer

Abstract

Active roll stabilizer (4) with an actuator (5) and with a transmission device (6) for transmitting forces and / or torques generated by the actuator (5) to a wheel suspension, characterized in that the transmission device (6) has a first part (7) and a second part (8) and wherein the first part (7) relative to the second part (8) can be torsionally rotated both counterclockwise and clockwise against a restoring force starting from a neutral position, and wherein the transmission device (6) has a spring element (16) and the restoring force is effected by the same spring element (16) both in a counterclockwise and in a clockwise rotation.

Description

[0001] The invention relates to an active roll stabilizer with an actuator and with a transmission device for transmitting forces and / or torques generated by the actuator to a wheel suspension.

[0002] A swivel motor for a split vehicle stabilizer is known from DE 10 2005 031 036 A1. The split vehicle stabilizer has a built-in swivel motor for roll control, which consists of at least an adjustment drive with an electric motor, a swivel motor gearbox, and a housing. The swivel motor is arranged between the two halves of a stabilizer and is designed to rotate these stabilizer halves relative to each other as required, based on a suitable control signal.

[0003] Such roll stabilization is particularly advantageous when driving in fast and / or tight curves. However, in driving situations where only minimal body roll occurs, especially when driving straight ahead, the roll stabilization system should be switched to torque-free mode to ensure maximum driving comfort.

[0004] From DE 10 2008 048 950 A1, a pressure-medium-actuated swivel motor for a vehicle is known, which is arranged in a split stabilizer and with which the two stabilizer halves can be swivelled relative to each other to compensate for vehicle movements. The swivel motor has a piston that is axially displaceable in a housing and working chambers arranged on both sides of the piston. By pressurizing the working chambers in conjunction with one or more coupling elements, a torque can be generated between the stabilizer halves. There is a connection between the working chambers, which can be closed or opened by means of a valve depending on the vehicle's driving condition.

[0005] From DE 10 2009 013 053 A1, a stabilizer for the chassis of a motor vehicle is known, comprising at least two stabilizer elements which can be rotated for roll control by means of at least one electric motor actuator and which are each connected to the chassis via at least one connecting rod. The stabilizer can be decoupled by means of at least one hydraulic release device.

[0006] From EP 2 011 674 A1, a stabilizer arrangement is known, comprising a two-part stabilizer whose stabilizer sections perform a rotational relative movement to each other and exert a restoring force under opposing torsional loads. The restoring force is adjustable by means of an actuator in conjunction with a gearbox, wherein the stabilizer arrangement has at least one further spring, independent of any torsional spring action of the stabilizer sections, which effects a torsional spring action. The at least one further spring is part of a torsional damper, which has a primary part and a secondary part that can rotate relative to each other, wherein the at least one spring can be tensioned between the primary part and the secondary part. The spring is designed as a star-shaped elastomer body with individual spring segments. Different spring segments are assigned to the different directions of rotation.This means that when the primary part is rotated counterclockwise relative to the secondary part, different spring segments are loaded than when it is rotated clockwise.

[0007] A similar device is known from DE 10 2009 006 385 A1. Specifically, this document discloses a rotary actuator for an active roll stabilizer, the drive of which can be connected to one stabilizer half and the stator to the other stabilizer half of a split stabilizer. A torsional element is effectively arranged between the drive and one stabilizer half, the torsional stiffness of which is lower than that of the stabilizer. A connecting part and a drive part are provided with interlocking webs arranged circumferentially around a rotational axis, which can be designed, in particular, as claws or lamellae.

[0008] The elastomer spring elements are arranged between these interlocking webs.

[0009] DE 10 2008 046 588 A1 discloses an active stabilizer for a motor vehicle. The stabilizer couples two wheels of a chassis and consists of a first stabilizer part assigned to one wheel and a second stabilizer part assigned to the other wheel, as well as an actuator between the stabilizer parts. Each stabilizer part extends from a connection assigned to the actuator to a connection assigned to the wheel. At least one stabilizer part is connected to the actuator via at least one further spring element.

[0010] EP 1 785 294 A1 discloses a stabilizer arrangement with a two-part stabilizer, the stabilizer sections of which perform a rotational relative movement to each other and exert a restoring force under opposing torsional loads. The stabilizer arrangement includes an actuator, and a further spring is arranged in the actuator housing, which produces a further torsional spring effect independent of the torsional spring effect of the stabilizer sections.

[0011] The object of the present invention is to provide a roll stabilizer that requires fewer spring elements.

[0012] The problem is solved by a roll stabilizer of the type mentioned above, characterized in that the transmission device has a first part and a second part, wherein the first part relative to the second part, starting from a neutral position against a restoring force, can be torsioned both counterclockwise and clockwise, and wherein the transmission device has a spring element and the restoring force is caused by the same spring element in both counterclockwise and clockwise rotation.

[0013] The roll stabilizer according to the invention has the particular advantage that it can be constructed in a simpler and therefore more robust and reliable manner than roll stabilizers known from the prior art.

[0014] In accordance with the invention, the first part of the transmission device is rotatable relative to the second part of the transmission device about an imaginary axis of rotation, which is arranged parallel, in particular coaxially, to the direction of the torque vector of a torque to be transmitted via the torque transmission device.

[0015] In an advantageous embodiment of the roll stabilizer, a neutral position of the first part relative to the second part is defined. This neutral position can advantageously be defined by the spring element exerting a torque that forces the first part into the neutral position relative to the second part. In the neutral position, the counterclockwise and clockwise forces exerted by the spring element either cancel each other out or are zero.

[0016] It can also be provided that the neutral position is achieved by a neutral position range in which the first part can be torsionally rotated relative to the second part by a limited angular amount without the spring element exerting a restoring force. As will be explained in more detail below, this can be achieved, for example, by installing the spring element with some play.

[0017] In a particularly advantageous embodiment, the portion of the spring element that is tensioned during counterclockwise rotation from the neutral position is also tensioned during clockwise rotation from the neutral position. Specifically, this portion of the spring element can be tensioned in compression regardless of the direction of rotation. Alternatively, this spring element can be tensioned in tension regardless of the direction of rotation. In another device, the spring element is tensioned during counterclockwise torsion and during clockwise torsion, or vice versa.

[0018] In a particularly advantageous embodiment, at least one further spring element is provided with which a further restoring force can be effected.

[0019] With regard to the additional spring element, it can also be advantageously provided that the further restoring force is caused by the same additional spring element in both a left-hand and a right-hand rotation.

[0020] The second spring element can also be designed to be compressed, regardless of the direction of rotation. It is also possible for the second spring element to be tensioned relative to the second element, regardless of the direction of rotation of the first element. Of course, it is also possible for the spring element to be tensioned either under tension or compression, depending on the direction of rotation.

[0021] In another embodiment according to the invention, the spring element and / or the further spring element are shear-tensioned. Such a device can advantageously comprise an elastomer spring element.

[0022] In a particularly advantageous embodiment of the roll stabilizer according to the invention, which especially enables the formation of a progressive spring characteristic for the transmission component, it is provided that, during a relative rotation of the first and second parts starting from the neutral position, the spring element initially exerts the restoring force, while the second spring element initially exerts no restoring force. Rather, in this embodiment, the further restoring force is only exerted by the second spring element when a rotational position of the first part relative to the second part, other than the neutral position, is reached. As will be shown in more detail below, this can be achieved, for example, by installing the first spring element – ​​with respect to its direction of action – without play or with preload, while the second spring element – ​​with respect to its direction of action – is installed with some play.It is also possible that the spring element is installed with play in relation to its direction of action, while the other spring element is installed with greater play in relation to its direction of action.

[0023] The invention has the particular advantage that, in particular, metal springs, helical compression springs, helical extension springs and / or disc springs can be used, which by their very nature are not subject to the aging processes exhibited by elastomer springs and are naturally less prone to wear. Nevertheless, the use of elastomer springs is certainly possible.

[0024] In an advantageous embodiment, the spring element and / or the additional spring element are designed as compression springs. Advantageously, the spring element and / or the additional spring element can also be designed as a disc spring. Such an embodiment is particularly robust and durable.

[0025] It is also possible that the spring element and / or the additional spring element are composed of several components and include a compression spring and / or a disc spring. Alternatively, it is also possible that the spring element and / or the additional spring element are designed as a tension spring or include a tension spring.

[0026] In a particularly advantageous embodiment, the spring element and / or the additional spring element are designed as a torsion spring, e.g., as a torsion bar. It is also possible that the spring element consists of several components and includes a torsion spring, in particular a torsion bar.

[0027] In particular, to achieve a progressive spring characteristic, it can be advantageously provided that the spring element and / or the further spring element has several individual springs mechanically connected in series. This can be implemented, for example, by mechanically connecting a softer and a stiffer spring in series, so that at small torsion angles both springs are effective, while at larger torsion angles the softer spring is fully compressed and therefore only the stiffer spring is effective with respect to the spring element.

[0028] Alternatively or additionally, the spring element and / or the further spring element may also have several individual springs connected mechanically in parallel. With such a design, the functionality of the transmission device is still guaranteed even if one of the springs breaks.

[0029] With regard to particularly high functional reliability, it may alternatively or additionally be provided that the spring element and / or the further spring element has at least one multi-wire spring.

[0030] In particular, to achieve a progressive spring characteristic, at least one stop can advantageously be provided that limits the range of torsional flexibility of the first part relative to the second part. In such a design, the spring characteristic in the angular range in which the first part is torsionally flexible relative to the second part is characterized by the spring element and / or the additional spring element, while outside this range the spring element is mechanically short-circuited by the stop, so that outside the rotational angular range in which the first part is torsionally flexible relative to the second part, the spring characteristic of the transmission device is characterized by the material properties of the first part and the second part and, if applicable, other components of the transmission device.

[0031] In a particularly advantageous embodiment, the roll stabilizer has a stop arrangement, in particular with several stops, which, depending on the relative position of the first and second part, mechanically short-circuits the spring element and / or the further spring element and / or parts of the spring element and / or parts of the further spring element.

[0032] Alternatively, it can also be provided that two stops, depending on the rotational position of the first part relative to the second part, increasingly or less closely align themselves with each other, depending on the direction of rotation.

[0033] In the aforementioned embodiments, it can be provided in particular that the spring characteristic curve can be determined - preferably progressively - by ensuring that only a part of the spring element and / or the further spring element, which depends on the rotational position of the first part relative to the second part, can have an effect, while another part is mechanically short-circuited by one or more stops.

[0034] Such a design can be achieved, for example, by using a torsion bar as the spring element, connecting the first and second parts. This torsion bar must have at least one stop bar extending substantially along its length and originating from the first part. As the first part rotates relative to the second part, this stop bar increasingly engages with a helical stop bar that is fixed against rotation to the second part. Alternatively, the stop bar itself can be helical and engage with a further stop bar. This further stop bar can be straight. However, it can also be helical with a different pitch than the stop bar of the torsion bar. It is also possible for the further stop bar to have a different direction of helical winding than the stop bar of the torsion bar.

[0035] In another advantageous embodiment, the first part has a first recess facing the second part, while the second part has a second recess facing the first part. The first and second recesses can advantageously form a receiving space for the spring element, wherein preferably a first part of the spring element is arranged in the first recess and a second part of the spring element is arranged in the second recess. For example, the spring element inserted into the receiving space can advantageously be designed as a helical compression spring.

[0036] In an advantageous embodiment, the first and second recesses are opposite each other, and in particular, congruent, in the neutral position. In this neutral position, the effective receiving space for the spring element is maximally large. If the first part is twisted relative to the second part, the recesses shift relative to each other, thereby reducing the effective receiving space and compressing a spring element arranged in the recesses. This occurs because the effective receiving space for the spring element is defined by the overlap area of ​​the recesses. Compression of the spring element occurs regardless of the direction of rotation, because the receiving space available for the spring element is always reduced in both counterclockwise and clockwise rotations.

[0037] The same can be implemented analogously with regard to the further spring element and its further receiving space, which may consist of, for example, a further first recess and a further second recess, or even further additional spring elements, each of which may also have its own receiving space.

[0038] Advantageously, the first recess can be formed, for example, in a first flange-like disk of the first part. Furthermore, the second recess can advantageously be formed in a second flange-like disk of the second part. Preferably, the flange-like disks are arranged in planes parallel to each other and rotatable relative to each other about a common axis of rotation.

[0039] In a particularly stable and wear-resistant embodiment, the first part additionally has a third flange-like disc with a third recess, wherein the second flange-like disc is arranged between the first and the third flange-like disc, and wherein a third spring element part is arranged in the third recess.

[0040] Analogous to the described recesses, a further first recess, a further second recess, and optionally a further third recess for a further spring element can advantageously be provided. It can advantageously be provided that a first spring element part of the further spring element is arranged in the further first recess and a second spring element part of the further spring element is arranged in the further second recess. Additionally, if present, a third spring element part of the further spring element can be arranged in a further third recess.

[0041] In a particularly advantageous embodiment that dampens torsional movement of the first part relative to the second part, the first and second parts are pressed against each other, preferably by spring action. In particular, an additional friction disc can be arranged between the first and second parts, which can be replaced if necessary when worn. For example, a disc spring or several disc springs can be advantageously used for this purpose. In an advantageous embodiment, a disc spring presses a flange-like disc of the first part against a second flange-like disc of the second part, arranged coaxially to the first flange-like disc.

[0042] To influence the spring characteristic, it can advantageously be provided that the spring element and the further spring element differ in at least one property, in particular in length and / or with respect to spring stiffness. Alternatively or additionally, it can also be provided that the recesses in which the spring element is arranged, particularly in the direction of action of the spring element, have a different size than – with respect to the direction of action of the further spring element – ​​the recesses in which the further spring element is arranged.

[0043] In this way, as already described, it can be achieved that a different spring characteristic is at work in a first rotational position range than in a second rotational position range that differs from the first. Furthermore, it can be advantageously provided that outside the rotational position ranges, e.g., defined by stops, the spring element and the subsequent spring element are mechanically short-circuited, so that the spring properties of the material of the other components of the transmission device essentially characterize the spring characteristic curve.

[0044] In an advantageous embodiment of the roll stabilizer according to the invention, the first recess and / or the second recess and / or the third recess are arranged at a distance from a common axis of rotation of the first and second parts. The same is advantageously possible with regard to further recesses for the additional spring element and / or even further additional recesses for further additional spring elements.

[0045] In an advantageous embodiment, the spring element and / or the further spring element are arranged with external guidance. In particular, it can be provided that a receiving space – for example, by recesses in the first and second parts – is formed for the spring element, wherein at least a portion of the surfaces or edges bounding the receiving space inwards serve as a guide for the spring element. The same can, of course, be provided analogously for a further spring element and further spring elements.

[0046] Alternatively or additionally, the spring element and / or the further spring element can also be internally guided. In particular, it can be provided that the spring element has a passage in which a guide pin is arranged and / or that the further spring element has a further passage in which another guide pin is arranged.

[0047] In an advantageous design, the spring element is installed with or without play, with respect to its direction of action. Additionally, the spring element can be pre-tensioned. Depending on the degree of pre-tension, the torque level at which the spring characteristic begins can be adjusted.

[0048] In a particularly advantageous embodiment, the first part and the second part are mounted in a way that is rigid relative to each other. This can be achieved, for example, by the first part having a cylindrical recess, particularly in a tube, in which a shaft of the second part is rotatably mounted. Alternatively or additionally, a support, particularly a tubular one, can be provided to absorb and / or dissipate bending forces.

[0049] As already explained, it can be advantageous for the spring element and / or the other spring element to be components of a progressive spring system and / or for the first part and the second part to be progressively torsionally coupled. A progressive design has the distinct advantage that, for example, when driving straight ahead, enough spring action can be provided to ensure a high level of straight-line comfort, and that when cornering – i.e., when large forces and torques occur with regard to roll stabilization – the progressive spring characteristic makes it possible to transmit the forces and / or torques necessary for roll stabilization safely and quickly.

[0050] In an advantageous embodiment, the first part and / or the second part is designed as a spring tube and / or as a torsion spring, exhibiting a different spring characteristic than the spring-elastic coupling of the first and second parts. In particular, the first and / or the second part can be made of fiber-reinforced plastic and / or carbon fiber-reinforced plastic. This embodiment has the particular advantage of being both exceptionally strong and exceptionally lightweight.

[0051] The actuator can be, in particular, an electrically driven actuator. Furthermore, it can be advantageously provided that a gearbox, in particular a tension wave gearbox, is connected downstream of the actuator and / or that the actuator includes a gearbox, in particular a tension wave gearbox.

[0052] It may also be provided that the transmission device is designed and arranged to transmit forces and / or torques from one stabilizer half, for example designed as a torsion bar spring, to another stabilizer half, possibly also designed as a torsion bar spring.

[0053] It should be clarified that, for the purposes of the present invention, a transmission device is to be considered progressive if the restoring force or restoring torque increases disproportionately to the applied torque or force. This applies regardless of whether the spring characteristic of the transmission device is continuous or discontinuous.

[0054] Further objectives, advantages, features, and applications of the present invention will become apparent from the following description of an exemplary embodiment with reference to the drawing. All features described and / or illustrated, individually or in any meaningful combination, constitute the subject matter of the present invention, even independently of their compilation in the claims or their cross-references.

[0055] They show: Fig. 1 an active roll stabilizer according to the invention, Fig. 2 an exploded view of part of a transmission device, Fig. 3 an assembly diagram of a part of a transmission device, Fig. 4 a detailed representation of part of a transmission device, Fig. 5 a further detailed representation of part of a transmission device, Fig. 6 a sectional view of part of a transmission device, Fig. 7 a section view of a photograph of a spring component in a neutral position and Fig. 8 a section view of the mounting for the spring component in a torsional position different from the neutral position.

[0056] Fig. Figure 1 shows a chassis component 1 with wheels 2 and shock absorbers 3. The chassis component 1 has a roll stabilizer 4 with an actuator 5, to which a transmission device 6 is connected on each side for transmitting the torques generated by the actuator 5. The transmission devices 6 are each designed as progressive spring devices. The spring characteristic of the transmission devices 6 is shown in the diagram in which the torque N is plotted as a function of the rotation angle φ. Each of the transmission devices 6 has a first part 7 and a second part 8, wherein the first part 7 can be rotated both counterclockwise and clockwise relative to a second part 8 from a neutral position against a restoring force.

[0057] The actuator 5 is controlled by a control device 11.

[0058] Each of the first parts 7 has a first flange-like disk 9. Furthermore, each of the second parts 8 has a second flange-like disk 10. The first flange-like disk 9 and the second flange-like disk 10 of a transmission device 6 are arranged parallel and coaxial to each other and rotatably relative to each other.

[0059] The flange-like discs 9, 10 have - which is not visible in this figure, but is shown in detail in the following figures - first and second recesses 13, 14 which form a receiving space for a spring element 16 which causes a restoring force both when the first part 7 is rotated to the left and when the second part 8 is rotated to the right

[0060] Fig. Figure 2 shows a detailed exploded view of the transmission device (6). Specifically, the first flange-like disk 9 and the second flange-like disk 10 are shown. Furthermore, the transmission device (6) has a third flange-like disk 12, which is arranged in a rotationally fixed position relative to the first flange-like disk 9 in the assembled position. The second flange-like disk 10 is located between the first flange-like disk 9 and the third flange-like disk 12.

[0061] The first flange-like disc 9 has a first recess 13. In its neutral position, the first recess 13 is opposite a second recess 14 of the second flange-like disc 10. The third flange-like disc 12 has a third recess 15, which in its neutral position is aligned with the first recess 13 and the second recess 14. The first recess 13, the second recess 14, and the third recess 15 form a receiving space for a spring element 16, which is designed as a compression spring 17. In the assembled position, a first spring element part of the spring element 17 is located in the recess 13, a second spring element part of the spring element 17 is located in the second recess 14, and a third spring element part of the spring element 17 is located in the third recess 15.

[0062] For example, when a torque is exerted by the actuator 5, the second flange-like disc 10 twists relative to the first flange-like disc 9 and the third flange-like disc 12, thereby reducing the effective receiving space for the spring element 16, which results in compression of the compression spring 17. This is particularly noticeable in the Fig. Figures 7 (neutral position) and 8 (rotational position) are particularly clearly illustrated.

[0063] The first flange-like disc 9 has further first recesses 18. The second flange-like disc 10 has further second recesses 19. The third flange-like disc 12 has further third recesses 20. The further first recesses 18, the further second recesses 19, and the further third recesses 20 each form further receiving spaces for further spring elements 21. These further receiving spaces are also effectively reduced when the first part 7 is torsioned relative to the second part 8, resulting in compression of the further spring elements 21.

[0064] In particular, it may be provided that the additional receiving spaces are larger with respect to the direction of action of the additional spring elements 21 than the receiving space for the spring element 16, which has the effect - provided that the spring elements 16 and the additional spring elements 21 are of the same size - that at a small angle of rotation only the spring element 16 is effective, while at larger angles of rotation the additional spring elements 21 also act.

[0065] It can also be provided that the other spring elements 21 are of different lengths, which can also be used to create a progressive spring characteristic.

[0066] Fig. 3 shows the in Fig. 2 components already shown in assembled position.

[0067] Fig. Figure 4 includes a representation without the spring elements 16, 21 and without the third flange-like disc 12.

[0068] Fig. Figure 5 shows a representation without the third flange-like disc 12, but with the spring elements 16, 21.

[0069] Fig. Figure 6 shows a schematic cross-sectional view of the first flange-like disk 9, the second flange-like disk 10, and the third flange-like disk 12, whose recesses 13, 14, and 15 form a receiving space for a spring element 16 designed as a helical compression spring. It can be seen that the second flange-like disk 10 is rotationally fixed to a first shaft 22, while the first flange-like disk 9 and the third flange-like disk 12 are rotationally fixed to a tubular extension 23 of the first part 7 of the transmission device 6.

[0070] The shaft 22 is rotatably mounted in the tubular extension 23 by means of two ball bearings 24. This advantageously achieves a rigid mounting of the first part 7 relative to the second part 8. Instead of ball bearings 24, plain bearings or roller bearings could also be used. Reference symbol list 1 chassis component 2 wheels 3 shock absorbers 4 Roll stabilizer 5 Actuator 6 Transmission device 7 Part One 8 Part Two 9 first flange-like disc 10 second flange-like disc 11 Control device 12 third flange-like disc 13 first exception 14 second exception 15 third exception 16 spring element 17 Compression spring 18 first exception 19 second exceptions 20 third exceptions 21 additional spring elements 22nd wave 23 Tubular extension 24 ball bearings

Claims

[1] Active roll stabilizer (4) with an actuator (5) and with a transmission device (6) for transmitting forces and / or torques generated by the actuator (5) to a wheel suspension, characterized by , that the transmission device (6) has a first part (7) and a second part (8) and wherein the first part (7) can be torsionally rotated both counterclockwise and clockwise relative to the second part (8) starting from a neutral position against a restoring force, and wherein the transmission device (6) has a spring element (16) and the restoring force is effected by the same spring element (16) both in a counterclockwise rotation and in a clockwise rotation. [2] Roll stabilizer (4) according to claim 1, characterized by , that the neutral position of the first part (7) relative to the second part (8) is defined by the fact that a. the spring element (16) causes a torque that pushes the first part (7) into the neutral position relative to the second part (8) and / or that b. the spring element (16) is unloaded. [3] Roll stabilizer (4) according to claim 1 or 2, characterized by , that exactly the part of the spring element (16) which is tensioned when rotating counterclockwise from the neutral position is also tensioned when rotating clockwise from the neutral position. [4] Roll stabilizer (4) according to one of claims 1 to 3, characterized by , that a. exactly the part of the spring element (16) which is subjected to compression when rotating counterclockwise from the neutral position, is also subjected to compression when rotating clockwise from the neutral position, or that b. exactly the part of the spring element (16) which is tensioned when turning counterclockwise from the neutral position, is also tensioned when turning clockwise from the neutral position, or that c. exactly the part of the spring element (16) which, starting from the neutral position, is subjected to compression during a leftward rotation, is subjected to tension during a rightward rotation starting from the neutral position, or that d. exactly the part of the spring element (16) which, starting from the neutral position, is tensioned when turning counterclockwise, and is compressioned when turning clockwise from the neutral position. [5] Roll stabilizer (4) according to any one of claims 1 to 4, characterized by , that at least one further spring element (21) is provided with which a further restoring force can be effected. [6] Roll stabilizer (4) according to claim 5, characterized by, that the further restoring force is caused by the same further spring element (21) both in a left-hand rotation and in a right-hand rotation. [7] Roll stabilizer (4) according to claim 5 or 6, characterized by , that in the case of a relative rotation of the first (7) and second part (8) starting from the neutral position, the spring element (16) initially causes the restoring force and the further spring element (21) only causes the further restoring force when a relative position different from the neutral position is reached. [8] Roll stabilizer (4) according to any one of claims 1 to 7, characterized by , that a. the spring element (16) and / or the further spring element (21) is designed as a compression spring (17) or has a compression spring (17) or b. the spring element (16) and / or the further spring element (21) is designed as a tension spring or has a tension spring and / or that c. the spring element (16) and / or the further spring element (21) comprises several individual springs mechanically connected in series and / or d. the spring element (16) and / or the further spring element (21) has several mechanically parallel connected individual springs and / or that the spring element (16) and / or the further spring element (21) comprises at least one multi-wire spring, and / or that e. the spring element (16) and / or the further spring element (21) is designed as a torsion spring or as a torsion bar or has a torsion spring or a torsion bar. [9] Roll stabilizer (4) according to any one of claims 1 to 8, characterized by , that at least one stop is provided which limits the range of rotation of the first part (7) relative to the second part (8). [10] Roll stabilizer (4) according to any one of claims 1 to 9, characterized by , that a. a stop arrangement with one or more stops is provided, which, depending on the relative position of the first (7) and second part (8), mechanically short-circuits the spring element (16) and / or the further spring element (21) and / or parts of the spring element (16) and / or parts of the further spring element (21), or that b. depending on the rotational position of the first part (7) relative to the second part (8) - depending on the direction of rotation - the two stops increasingly or less closely align themselves with each other. [11] Roll stabilizer (4) according to any one of claims 1 to 10, characterized by , that a. the spring element (16) is a torsion bar connecting the first part (7) and the second part (8) and that the torsion bar has at least one stop bar extending substantially along its longitudinal extent and originating from the first part (7), which, as the first part (7) is rotated relative to the second part (8), increasingly conforms to a further helical stop bar arranged in a rotationally fixed manner to the second part (8) and / or that b. the spring element (16) is a torsion bar connecting the first part (7) and the second part (8) and that the torsion bar has at least one substantially helical stop bar extending from the first part (7), which, as the first part (7) is rotated relative to the second part (8), increasingly conforms to a further stop bar arranged in a rotationally fixed manner to the second part (8). [12] Roll stabilizer (4) according to any one of claims 1 to 11, characterized by , that a. the first part (7) has a first recess (13) directed towards the second part (8) and that the second part (8) has a second recess (14) directed towards the first part (7) and that a first spring element part of the spring element (16) is arranged in the first recess (13) and a second spring element part of the spring element (16) is arranged in the second recess (14) and / or that b. the first part (7) has a further first recess (18) directed towards the second part (8) and that the second part (8) has a further second recess (19) directed towards the first part (7) and that a first spring element part of the further spring element (21) is arranged in the further first recess (18) and a second spring element part of the further spring element (21) is arranged in the further second recess (19) and / or that c. the first part (7) has a first recess (13) directed towards the second part (8) and that the second part (8) has a second recess (14) directed towards the first part (7), wherein the first recess (13) and the second recess (14) form at least part of a receiving space for the spring element (16) and / or that d. the first part (7) has a further first recess (18) directed towards the second part (8) and the second part (8) has a further second recess (19) directed towards the first part (7), wherein the further first recess (18) and the further second recess (19) form at least part of a further receiving space for the further spring element (21). [13] Roll stabilizer (4) according to claim 12, characterized by , that a. the first recess (13) and / or the further first recess (18) is formed in a first flange-like disk (9) of the first part (7) and / or that b. the second recess (14) and / or the further second recess (19) is formed in a second, flange-like disk (10) of the second part (8). [14] Roll stabilizer (4) according to claim 13, characterized by , that the first part (7) has a third flange-like disk (12) with a third recess (15) and / or a further third recess (20), wherein the second flange-like disk (10) is arranged between the first (9) and the third flange-like disk (12) and wherein a third spring element part of the spring element (16) is arranged in the third recess (15) and / or wherein a third spring element part of the further spring element (21) is arranged in the further third recess (20). [15] Roll stabilizer (4) according to any one of claims 1 to 14, characterized by , that a. the spring element (16) and / or the further spring element (21) is guided externally and / or that b. a receiving space for the spring element (16) is formed, wherein at least a part of the surfaces or edges bounding the receiving space inwards serve as a guide for the spring element (16) and / or that c. a further receiving space for the further spring element (21) is formed, wherein at least a part of the surfaces or edges that bound the further receiving space inwards serve as a guide for the further spring element (21). [16] Roll stabilizer (4) according to any one of claims 1 to 14, characterized by , that a. the spring element (16) and / or the further spring element (21) is guided internally and / or that b. the spring element (16) has a passage in which a guide pin is arranged and / or that the further spring element (21) has a further passage in which a further guide pin is arranged. [17] Roll stabilizer (4) according to any one of claims 12 to 16, characterized by , that a. the first recess (13) and the second recess (14) are opposite each other or congruent in the neutral position, and that the first recess (13) and the second recess (14) are pivoted relative to each other in a rotational position of the first part (7) and the second part (8) that deviates from the neutral position and / or that b. the further first recess (18) and the further second recess (19) are opposite each other or congruent in the neutral position, and that the further first recess (18) and the further second recess (19) are pivoted relative to each other in a rotational position of the first part (7) and the second part (8) that deviates from the neutral position. [18] Roll stabilizer (4) according to any one of claims 12 to 17, characterized by , that a. the first recess (13) and / or the second recess (14) and / or the third recess (15) are spaced apart from a common axis of rotation of the first (7) and second part (8) and / or that b. the further first recess (18) and / or the further second recess (19) and / or the further third recess (20) are spaced apart from a common axis of rotation of the first (7) and second part (8). [19] Roll stabilizer (4) according to any one of claims 1 to 18, characterized by , that a. the first part (7) and the second part (8) are pressed against each other by friction and / or that an additional friction disc is arranged between the first part (7) and the second part (8) or b. the first part (7) and the second part (8) are pressed against each other by spring friction and / or that an additional friction disc is arranged between the first part (7) and the second part (8). [20] Roll stabilizer (4) according to any one of claims 5 to 19, characterized by , that a. the spring element (16) and the further spring element (21) differ in at least one property or b. the spring element (16) and the other spring element (21) differ in length and / or in terms of spring stiffness. [21] Roll stabilizer (4) according to any one of claims 12 to 20, characterized by , that a. the recesses (13, 14, 15) in which the spring element (16) is arranged have a different size than the recesses (18, 19, 20) in which the further spring element (21) is arranged or b. the recesses (13, 14, 15) in which the spring element (16) is arranged in a tangential direction have a different size than the recesses (18, 19, 20) in which the further spring element (21) is arranged. [22] Roll stabilizer (4) according to any one of claims 1 to 21 except claim 2b, characterized by , that a. the spring element (16) is arranged in the neutral position or in the neutral position in a tangential direction, without play and / or preloaded and / or that b. the spring element (16) is arranged in the neutral position or in the neutral position in the tangential direction, without play and / or preloaded, while the further spring element (21) is arranged in a neutral position or in the tangential direction, with play. [23] Roll stabilizer (4) according to any one of claims 1 to 22, characterized by , that the first part (7) and the second part (8) are mounted in a way that is rigid relative to each other and / or that the first part (7) has a cylindrical recess or a cylindrical recess in a tube in which a shaft of the second part (8) is rotatably mounted. [24] Roll stabilizer (4) according to any one of claims 1 to 23, characterized by, that the spring element (16) and / or the further spring element (21) are components of a progressive spring device and / or that the first part (7) and the second part (8) are progressively torsionally elastically coupled. [25] Roll stabilizer (4) according to any one of claims 1 to 24, characterized byan additional, other transmission device (6) for transmitting forces and / or torques generated by the actuator (5) to another wheel suspension, wherein the other transmission device (6) has a different first part (7) and a different second part (8) and wherein the other first part (7) is torsionally rotatable both counterclockwise and clockwise relative to the other second part (8) starting from a neutral position against a restoring force, and wherein the other transmission device (6) has a different spring element (16) and the restoring force is effected by the same other spring element (16) both counterclockwise and clockwise. [26] Vehicle with a roll stabilizer (4) according to any one of claims 1 to 25.

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