Spring arrangement for a motor vehicle

Abstract

Spring arrangement (10, 20, 30, 40) for a motor vehicle, comprising a coil spring (1) extending along an axis of extension (A) and supported at least one spring seat (2.3, 5) via an elastic spring support (3, 13, 23, 33), wherein the spring seat (2.3, 5) has a rigid support structure (2.4, 5.1) arranged radially within the coil spring (1) and the spring support (3, 13, 23, 33) has a side section (3.2, 13.2, 23.2, 33.2) arranged between the support structure (2.4, 5.1) and the coil spring (1) and an end section (3.1, 13.1, 23.1, 33.1) connected thereto and arranged axially in front of the coil spring (1), wherein the coil spring (1) is attached to the side section (3.2, 13.2, 23.2, 33.2) is adjacent and the side section (3.2, 13.2, 23.2, 33.2) is adjacent to the support structure (2.4, 5.1), wherein the side section (3.2, 13.2, 23.2, 33.2) surrounds an opening through which the support structure (2.4, 5.1) projects in an axial direction, wherein the support structure (2.4) is formed on a horizontally extending boom (2.2), and wherein the spring seat (2.3) and the support structure (2.4) are manufactured integrally with the boom (2.2), characterized in that the boom (2.2) is manufactured at least partially integrally with a wheel carrier (2).

Description

[0001] The suspension is an essential element of the wheel suspension in motor vehicles. In a typical design, a wheel carrier, which forms the mounting point for the actual vehicle wheel, is connected to the vehicle chassis via one or more control arms (e.g., lateral and longitudinal control arms). These control arms guide the wheel carrier and allow it to move relative to the vehicle body, i.e., the chassis and body. The actual suspension can be achieved in a variety of ways. In any case, the spring is positioned so that a restoring force is generated when the wheel carrier moves relative to the vehicle body. The vehicle body is part of the sprung mass, while the wheel carrier is part of the unsprung mass. In the prior art, coil springs, usually made of spring steel, are often used.Such a coil spring is typically supported either by the wheel carrier itself or by a control arm, with the vehicle body in turn resting on the coil spring. The spring's path can be more or less vertical, but in some cases, there may also be a significant inclination in the longitudinal or transverse direction of the vehicle.

[0002] It is known in the art to mount the spring in spring plates, which serve to provide a sufficiently large and flat contact surface for the spring. The edge of the spring plate is often flange-shaped and encloses the end of the spring to prevent lateral displacement. Furthermore, the spring is often not directly supported by a metal part (for example, the spring plate), but rather by an intermediate spring pad, typically made of an elastic material such as rubber, which serves to dampen vibrations. Naturally, the spring pad must also absorb the forces acting in the longitudinal direction of the spring. Depending on the design, however, one function of the spring pad is also to absorb forces occurring in the transverse direction.The latter can lead to problems due to the elastic design of the spring support, as the spring support may be too soft to adequately stabilize the position of the spring under lateral forces.

[0003] US Patent 4,690,428 A discloses a bump stop system with a first element connected to the chassis of a vehicle and a second element connected to a suspension component, such as a lower control arm. The first element comprises a base, for example, made of steel, and an elastomeric cover that is pressed against the bump stop by a suspension spring. Similarly, the second element comprises an elastomeric cover that is pressed against a base by the suspension spring. Each base has a projection that is completely covered by the respective cover. The covers have complementary shapes that interlock under heavy suspension compression.

[0004] DE 10 2005 044 222 A1 discloses a wheel suspension for the rear wheels of motor vehicles, with a wheel carrier which is articulated to at least one upper and one lower control arm, wherein the upper control arm is articulated to an upwardly projecting arm of the wheel carrier which passes the adjacent wheel above the wheel.

[0005] US Patent 6,149,171 A discloses an insulator for a suspension system comprising a helical spring. A first surface supports the insulator with respect to a base structure, a second surface interacts with the helical spring, the second surface having at least one notch to prevent vibration propagation, and an orientation element on the second surface determines the orientation of the helical spring with respect to the second surface.

[0006] DE 20 2015 100 435 U1 discloses a spring assembly for a motor vehicle. A spring pad for arrangement between a coil spring of a vehicle wheel suspension and a spring plate supporting the coil spring is described. The spring pad has a structure comprising at least two material layers with different stiffnesses, wherein the first material layer rests against the spring plate and the second material layer rests against the coil spring, and the first material layer has a higher stiffness than the second material layer. The second material layer has a collar-shaped contact section at least partially along its circumference, and the first material layer has a support collar at least in this circumferential section, against which the contact section is supported in the radial direction.

[0007] DE 42 03 658 A1 discloses a coil spring support, particularly on a vehicle strut, in which an axial spring support surface or line extending approximately in a plane is axially supported at an end coil section of a coil spring by a corresponding support surface or line of a spring support element extending in a plane. A centering surface of the spring support element centers the radial inner or outer contour of the end coil section in the radial direction. The inner or outer contour of the end coil section and the interacting centering surface of the spring support element each have a non-circular shape over a larger circumferential area, thereby radially centering the end coil section in a predetermined circumferential angular position and preventing the end coil section from rotating relative to the spring support element.

[0008] The KR 1 01 490 736 B1 is intended to demonstrate a spring base designed to prevent the ingress of foreign objects.

[0009] A wheel suspension for a motor vehicle according to the generic patent DE 198 27 864 C1, in particular a rear wheel suspension, consists of a spring separately surrounded by a damper. The spring and the damper are supported at their lower ends on a rear axle longitudinal tube via a common bracket arranged approximately transversely to the vehicle, and the damper is pivotably held at its upper end on a support device attached to a body frame, with the spring being mounted at its upper end in a support device integrated into the body frame.

[0010] JP 2008 / 24 158 A shows an arrangement with a wishbone and a coil spring supported on it by an elastic spring pad. The spring pad is placed at the lower end of the spring, conforming to its coil shape and extending almost completely around it. A recess with a hole is formed on the upper side of the wishbone. The spring pad has a projection complementary to the hole. During assembly, the pad is first placed onto the spring and then inserted into the recess, with the projection and hole engaging to facilitate positioning.

[0011] DE 10 2011 000 462 A1 discloses a single-shell spring link formed from sheet metal for a spring assembly. Between two end sections for connection to a chassis support and a wheel carrier, a wider section is provided to support a spring. A helix is ​​formed in this wider section to serve as a spring seat. The helix can surround an opening with an inwardly projecting collar that acts as a centering aid for the spring. A groove and an opening can be cut into the base of the spring link shell to secure and align a spring seat insert made of rubber or plastic.

[0012] The JP H10 - 31 5731 A shows a suspension for an axle in which a coil spring is supported by a spring plate attached to the top of the axle. The spring plate engages with a raised section in the inner part of the spring. To reduce noise and facilitate assembly, an end cap is fitted to the end of the spring, acting as a damper and also engaging with a projection in a hole provided in the spring plate.

[0013] DE 10 2013 009 637 A1 discloses a spring support for a motor vehicle for placement between a coil spring and a spring plate. The spring support comprises a base body made of elastic polymer and a sacrificial anode arranged on the spring side, which in turn is supported by an insert made of solid material intended to prevent the sacrificial anode from breaking under mechanical stress. One embodiment shows a spring support with an annular section that is arranged between the spring plate and the coil spring, and an adjoining cylindrical section designed for placement within the spring. On the cylindrical side facing away from the annular section, a pin-like projection is provided for fastening the spring support to the spring plate.

[0014] DE 10 2008 057 325 A1 discloses a variable support for a coil spring, which is supported on one side by a body or axle component and on the other by a spring assembly. At least one end of the spring is supported by a spring support, which has a spring receptacle aligned with a center line and a mounting boss offset eccentrically to it. The spring support can comprise a solid core and an elastomer covering. The mounting boss can, for example, be pin-shaped and serves to connect to the body or similar. The offset is intended to prevent an off-center load application on the spring. In addition to the mounting boss, a locking boss, also pin-shaped, can be provided to prevent rotation.

[0015] KR 2012 0 061 624 A shows a spring support comprising an annular section and an adjoining cylindrical section. The surface of the annular section has a helix designed to accommodate a coil spring. The cylindrical section has a central recess through which, when installed, a shock absorber located inside the coil spring is guided.

[0016] Given the current state of the art, the development of a structurally simple spring arrangement that ensures both good damping of vibrations and stabilization of the spring against lateral forces still offers room for improvement.

[0017] The invention is based on the objective of providing a spring arrangement that enables good vibration damping as well as good stabilization of the spring against lateral forces.

[0018] According to the invention, the problem is solved by a spring arrangement with the features of claim 1.

[0019] A spring arrangement for a motor vehicle is shown, comprising a coil spring extending along an axis of extension and supported on at least one spring seat via an elastic spring support, wherein the spring seat has a rigid support structure arranged radially within the coil spring and the spring support has a side section arranged between the support structure and the coil spring and an end section connected thereto, arranged axially in front of the coil spring, wherein the coil spring rests against the side section and the side section rests against the support structure, wherein the side section surrounds an opening through which the support structure projects in the axial direction, wherein the support structure is formed on a horizontally extending cantilever, and wherein the spring seat and the support structure are manufactured integrally with the cantilever.According to the invention, the boom is manufactured at least partially in one piece with a wheel carrier.

[0020] The dependent claims relate to advantageous embodiments of the invention.

[0021] It should be noted that the features and measures listed individually in the following description can be combined in any technically sensible way and demonstrate further embodiments of the invention. The description further characterizes and specifies the invention, particularly in conjunction with the figures.

[0022] The invention provides a spring assembly for a motor vehicle, comprising a coil spring extending along an axis of extension and supported at least one spring seat by an elastic spring pad. The coil spring can be made of spring steel, but optionally also of another material, such as fiber-reinforced plastic or a composite material. The axis of extension corresponds to the direction of extension of the coil spring and may optionally coincide with an axis of symmetry or the spring centerline of the coil spring. However, the coil spring need not be symmetrical. The axis of extension defines a coordinate system with axial, tangential, and radial directions. The coil spring is primarily supported in the axial direction at the spring seat.Naturally, the spring connects an unsprung mass of the vehicle to a sprung mass and is part of the wheel suspension. The areas on the sprung and unsprung components where the spring is supported are referred to as "spring seats" in this context. This term is not otherwise to be interpreted restrictively with regard to the shape of the seat. Therefore, a spring seat must be provided for each end of the spring.

[0023] The coil spring is supported at least at one spring seat via an elastic spring pad. That is, the coil spring does not (or at least not everywhere) come into direct contact with the spring seat, but rather an elastic spring pad is interposed. The spring pad can, in particular, consist at least predominantly of rubber or an elastomer.

[0024] As mentioned above, the spring seat has a rigid support structure arranged radially inside the coil spring, and the spring base comprises a side section located between the support structure and the coil spring, and an end section connected to this side section and located axially in front of the coil spring. The support structure is located radially inside the coil spring, meaning that along the radial direction it is situated on the inside of the coil spring. One could also say that the support structure projects axially into the interior of the coil spring. The support structure is rigid, meaning that—like most components in the vehicle suspension—it is inelastic compared to the spring base. Furthermore, the support structure is not only rigid in itself but is also rigidly connected to, or even part of, the rest of the spring seat. Between the support structure and the coil spring, i.e.,The side section of the spring support is arranged radially between the two. The term "side section" is not to be interpreted restrictively with regard to its shape and merely describes the fact that this section is arranged laterally to the support structure. In certain embodiments, the side section may be shaped like a shell, for example, a cylindrical shell or a truncated conical shell. The end section, which is arranged axially in front of the coil spring, is directly or indirectly connected to the side section. It is positioned between the spring seat, against which the coil spring is supported, and the coil spring itself. It is, in effect, located at the end face of the coil spring.

[0025] The end section primarily serves to absorb static and dynamic forces acting parallel to the axis of extension (i.e., axially) between the coil spring and the spring seat. The support structure and the intermediate side section, on the other hand, serve to absorb forces acting perpendicular to the axis of extension. Simultaneously, the support structure facilitates spring positioning during assembly and, of course, secures the spring's position once assembled. This may eliminate the need for a conventional spring plate that radially surrounds the spring. The spring seat can also be fully elastic, meaning a stabilizing core is unnecessary, with support provided by the support structure. The support structure can be made of metal, such as steel, but other sufficiently stable materials, such as...Fiber-reinforced plastic is conceivable. The support structure can be solid, but is typically hollow or shell-like, for example, formed as a sheet metal part. The support structure and / or the side section can be rotationally symmetrical with respect to the axis of extension. The same can also apply to the end section.

[0026] In this configuration, the coil spring rests against the side section, and the side section rests against the support structure. This means that the aforementioned parts are dimensioned to engage without play. This ensures that the coil spring is supported by the side section against the support structure at all times. Naturally, the parts do not need to be in full contact with each other. For example, it is sufficient if the coil spring rests against the side section with its bottom coil or a portion thereof. Similarly, gaps can exist between the support structure and the side section without significantly impairing the support function.

[0027] In principle, the side section could be limited to one or more sub-areas around the support structure. This would result in one or more gaps between the coil spring and the support structure, but these would not significantly impair the support effect, depending on their size and distribution. Preferably, however, the side section is arranged tangentially around the support structure. In other words, if one considers a plane perpendicular to the axial direction, the support structure is completely surrounded by the side section in this case. Generally, this design simplifies the manufacture of the spring base and increases its stability, while any weight savings that might result from openings in the side section are usually negligible due to the low density of the spring base.

[0028] According to one embodiment, the spring base includes a closing section that seals the end of the side section. This can simplify the manufacture of the spring base and increase its stability. The closing section connects axially to the side section and extends radially inwards from it, so that the two sections together form a bell-shaped structure that encloses the support structure. This can also provide protection for the support structure, for example, against corrosion or mechanical damage. In particular, the closing section can be dimensioned so that it rests at least partially or even completely against the support structure.

[0029] As mentioned above, the side section encloses an opening through which the support structure may protrude axially. This arrangement allows either savings in spring seat material or, through a particularly long support structure, increased lateral support and / or the spring's resistance to loss.

[0030] Although it is sufficient for the support structure to have more or less closed surfaces in the radial direction to support the side section and the spring, it is preferred that the support structure be closed in the axial direction. That is, there is no continuous opening within the support structure in the axial direction. Thus, a closed surface is formed even in the area that is not related to the actual support function. This design can serve, firstly, to stabilize the support structure overall, and secondly, it can prevent dirt from penetrating its interior.

[0031] A spring seat is typically arranged on a component of a vehicle wheel's suspension. This component can be, for example, a control arm, such as a lateral control arm. However, it can also be a wheel carrier. It is particularly preferred that the spring seat (including the support structure) is rigidly connected to the wheel carrier.

[0032] As described above, a support structure is formed on a horizontally extending arm of the wheel carrier. The term "horizontal" naturally refers to the installed position within the vehicle, where such an arm can extend, in particular, along the transverse axis (Y-axis) of the vehicle towards its center. This arm forms, in a sense, a base or platform from which the support structure projects, for example, along its axis of extension, which is typically more or less parallel to the vertical axis (Z-axis). The support structure is formed integrally with the arm or can be welded to it. Likewise, the arm can be welded to the rest of the wheel carrier. According to the invention, as already mentioned above, the arm is manufactured at least partially integrally with the wheel carrier.

[0033] Another spring seat is normally connected to the vehicle body. Besides a part of the body, it can be connected to a part of the chassis, such as a longitudinal member. In this configuration, a spring seat (including the support structure) can be designed as a sheet metal component and connected to a longitudinal member of the vehicle. For the spring seat, a significantly thinner sheet metal can usually be used than for the longitudinal member itself, making a one-piece manufacturing process unnecessary or impractical. The spring seat is therefore normally manufactured separately and bonded to the longitudinal member, for example, by welding or bonding. It goes without saying that a spring seat manufactured as a sheet metal component can also be connected to other parts of the vehicle body, such as a part of the body or a subframe.

[0034] In many cases, the support structure is essentially rotationally symmetrical, meaning that the side section, and thus the entire spring base, could twist. This is generally undesirable, especially if, for example, the side of the spring base facing the coil spring has a shape that deviates from rotational symmetry, such as being adapted to an end coil of the spring. Therefore, according to one embodiment, the end section and the spring seat have interlocking, axially extending locking structures that prevent tangential displacement of the spring base. These locking structures create at least a partial positive fit, preventing the spring base from shifting tangentially, i.e., from twisting relative to the support structure.The respective locking structures can be designed to be complementary to each other, so that one structure essentially forms the negative of the other. Such locking structures can also be used to predetermine a specific installation position of the spring support during assembly, thus simplifying the process. A locking mechanism to prevent rotation of the spring support further prevents unwanted noise that can occur when there is relative displacement between the spring support and the supporting structure.

[0035] In particular, the locking structures can comprise at least one bore formed in the spring seat and a complementary pin element formed on the end face. The bore and the pin element can, for example, extend parallel to the axis of extension. The pin element can be simply cylindrical, but it can also have a structured surface or (especially in the case of a through bore) an end barb to improve engagement with the bore. Naturally, multiple such bores and pin elements can be provided, arranged at uniform or non-uniform angular intervals around the support structure.

[0036] The Fig. 1 and Fig. Figures 3 each show a sectional view of a spring arrangement not encompassed by the scope of protection of the invention. Further advantageous details and effects of the invention are explained in more detail below with reference to different embodiments illustrated in the figures. The figures show: Fig. 2 a sectional view of a spring arrangement according to an embodiment of the invention; and Fig. 4 a sectional view of a spring arrangement according to a further embodiment.

[0037] In the different figures, identical parts are always provided with the same reference symbols, which is why they are usually only described once.

[0038] Fig. Figure 1 shows a sectional view of a spring assembly 10 of a motor vehicle, which is not covered by the scope of the invention. The viewing direction is along the X-axis (longitudinal axis) of the vehicle, meaning the section plane corresponds to the YZ-plane. Visible is a lower part of a coil spring 1, which connects a wheel carrier 2 to a vehicle body (a car body or a chassis) not shown. It is understood that the wheel carrier 2 is also connected to the vehicle body via links, which are also not shown. The wheel carrier 2 has a base section 2.1, on which the actual wheel bearing is arranged, and a cantilever 2.2 extending from this in the direction of the Y-axis (transverse axis). A pin-like, rigid support structure 2.4 is formed on this cantilever 2.2, which rises in the direction of the Z-axis (vertical axis). The support structure 2.4 forms part of a spring seat 2.3 for the coil spring 1.The Z-axis runs parallel to an extension axis A of the coil spring 1, which in this case corresponds to the spring's centerline. The extension axis A defines a coordinate system with axial, radial, and tangential directions. The spring seat 2.3 and the support structure 2.4 are shown here as integral parts with the boom 2.2; alternatively, they could be manufactured separately and welded, riveted, or otherwise rigidly connected to it. In this case, the support structure 2.4, like the rest of the wheel carrier 2, is made of aluminum, but another material with sufficient stiffness could also be used.

[0039] The support structure 2.4 is essentially rotationally symmetrical about the axis of extension A. An elastic spring pad 3, which is bell-shaped overall, is arranged on the support structure 2.4 and on the adjacent parts of the boom 2.2. The spring pad 3 is made of rubber, but other materials, such as elastomers, could also be used. Along the axial direction in front of the coil spring 1, or between the coil spring 1 and the boom 2.2, an annular end section 3.1 of the spring pad 3 is arranged, which serves to absorb axial forces between the coil spring 1 and the spring seat 2.3 or the wheel carrier 2.

[0040] The end section 3.1 is followed by a side section 3.2, which tangentially surrounds the support structure 2.4. It is located radially between the coil spring 1 and the support structure 2.4, with the side section 3.2 and the support structure 2.4, on the one hand, and the coil spring 1 and the side section 3.2, on the other, in contact without any play. The coil spring 1 is thus supported by the support structure 2.4 via the side section 3.2. The support structure 2.4 and the side section 3.2 therefore serve to absorb forces acting transversely to the axial direction between the coil spring 1 and the wheel carrier 2. While the spring support 3 is elastic and would be too weak on its own to support the coil spring 1, the support structure 2.4 is rigid and sufficiently stable to stabilize the spring support 3 and the coil spring 1. A final section 3 adjoins the side section 3.2.3, which closes off the spring support 3 (with respect to the Z-axis) at the top.

[0041] In this case, both the support structure 2.4 and the spring base 3 are essentially rotationally symmetrical with respect to the axis of extension A, so that the spring base 3 could rotate relative to the support structure 2.4. To prevent this, several pins 3.4 are formed on the end section 3.1, which engage in complementary bores 2.2.1 in the cantilever 2.2. These locking structures 2.2.1, 3.4 ensure a positive fit that prevents rotation.

[0042] Fig. Figure 2 shows an embodiment of a spring arrangement 20 according to the invention, which is predominantly identical to the one shown in Fig. The spring arrangement 10 shown in Figure 1 is described below and will not be explained again. However, the spring support 13 used here, which also comprises an end section 13.1 with pin 13.4 and a side section 13.2, does not have a closing section; instead, the side section 13.2 surrounds an opening through which an upper end 2.4.1 of the support structure 2.4 projects.

[0043] Fig. Figure 3 shows an embodiment of a spring arrangement 30 not covered by the scope of protection of the invention, which, however, can be combined with any of the features described in Figure 3. Fig. 1 and Fig. The two spring arrangements shown, 10 and 20, could be combined. The sectional view in Fig. Figure 3 shows a longitudinal member 4 to which a spring seat 5, designed as a sheet metal part, is attached by means of welds 6. Naturally, the longitudinal member 4 forms part of the sprung mass of the motor vehicle. Here again, a coil spring 1 can be seen, which in this case is similar to the one shown in Fig. 1 and Fig. The coil spring 1 shown in Figure 2 is supported here as well by an intermediate spring support 23 on the longitudinal member 4 or on the spring seat 5. The spring seat 5 again forms a support structure 5.1 projecting in the axial direction. The support structure 5.1 and the spring support 23 are also rotationally symmetrical with respect to an axis of extension A of the coil spring 1 and essentially correspond in form to those shown in Figure 2. Fig. 1 elements shown. Here too, the spring support 23 has an end section 23.1, a side section 23.2, and a end section 23.3. In this case as well, to prevent rotation of the spring support 23 relative to the spring seat 5, pins 23.4 are formed on the end section, which engage in bores 5.2 that extend through the spring seat 5 and the longitudinal member 4. It should be noted that the spring support 23 can be shaped identically to the one shown in Fig. 1 spring pad 3 shown, which significantly simplifies manufacturing.

[0044] Fig. Figure 4 shows an alternative embodiment of a spring arrangement 40, which is essentially the same as in Fig. The version shown in 3 corresponds to this and each of which in turn corresponds to the one in Fig. 1 and Fig. The two shown embodiments can be combined. Here again, a spring support 33 is provided, comprising a front section 33.1 and a side section 33.2. However, as in [previous example], the following is also missing: Fig. 2 a final section, so that the side section 33.2 surrounds an opening through which a lower end 5.1.1 of the support structure 5.1 protrudes. Reference symbol list 1 coil spring 2 bike carriers 2.1 Basic section 2.2 Boom 2.2.1, 5.2 Bore 2.3, 5 Spring seat 2.4, 5.1 Support structure 2.4.1 upper end 3, 13, 23, 33 Spring pad 3.1, 13.1, 23.1, 33.1 Frontal section 3.2, 13.2, 23.2, 33.2 Section 3.3, 23.3 Final section 3.4, 13.4, 23.4, 33.4 cones 4 longitudinal beams 5.1.1 lower end 6 weld seam 10, 20, 30, 40 spring arrangement A Extension axis Y Y-axis Z Z-axis

Claims

[1] Spring arrangement (10, 20, 30, 40) for a motor vehicle, with a spiral spring (1) which extends along an extension axis (A) and is supported on at least one spring seat (2.3, 5) via an elastic spring base (3, 13, 23, 33), wherein the spring seat (2.3, 5) has a rigid support structure (2.4, 5.1) arranged radially inside the spiral spring (1), and the spring base (3, 13, 23, 33) has a side section (3.2, 13.2, 23.2, 33.2) arranged between the support structure (2.4, 5.1) and the spiral spring (1) and a front section (3.1, 13.1, 23.1, 33.1) connected thereto and arranged axially in front of the spiral spring (1), wherein the spiral spring (1) on Side section (3.2, 13.2, 23.2, 33.2) and the side section (3.2, 13.2, 23.2, 33.2) rests on the support structure (2.4, 5.1), wherein the side section (3.2, 13.2, 23.2, 33.2) surrounds an opening through which the support structure (2.4, 5.1) projects in the axial direction, wherein the support structure (2.4) is formed on a horizontally extending boom (2.2), and wherein the spring seat (2.3) and the support structure (2.4) are manufactured in one piece with the boom (2.2). characterized by that the boom (2.2) is at least partially manufactured in one piece with a wheel carrier (2). [2] Spring arrangement according to claim 1, characterized by that the side section (13.2) is arranged tangentially around the support structure (2.4). [3] Spring arrangement according to one of the preceding claims, characterized by that the end section (13.1) and the spring seat (2.3) have interlocking, axially extending locking structures (2.2.1, 13.4) which prevent a tangential displacement of the spring base (13). [4] Spring arrangement according to one of the preceding claims, characterized byLocking structures (2.2.1, 13.4) which have at least one bore (2.2.1) formed in the spring seat (2.3) and a pin element (13.4) complementary thereto and formed on the end section.

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