Steering system for a motor vehicle

Abstract

The present invention relates to a steering column (1) for a motor vehicle, comprising at least two structural elements (3, 4) adjustable relative to each other and engaging with a linear adjustment drive (6) adjustable in a motorized manner along an adjustment axis (S), wherein an energy-absorbing device (6) including an energy-absorbing element (61) is arranged between the adjustment drive (5) and at least one of the structural elements (4). To achieve a simpler construction and expanded functionality, the present invention proposes that the energy-absorbing element (61) has an inner portion (62) coaxial with respect to the adjustment axis (S) and sleeve-connected to an outer portion (64) by means of a shaped portion (63) extending at least partially coaxially, the outer portion being arranged coaxially on the outer side.

Description

Technical Field

[0001] The present invention relates to a steering column for a motor vehicle, the steering column comprising at least two structural elements adjustable relative to each other and engaging with a linear adjustment drive, the linear adjustment drive being adjustable in a motorized manner in an adjustment direction along an adjustment axis, wherein an energy absorption device including an energy absorption element is arranged between the adjustment drive and at least one of the structural elements. Background Technology

[0002] A typical adjustable steering column, such as the adjustable steering column described, for example, in DE 10 2019 203 363 A1, has the following components in its spatial position: these components can be adjusted relative to each other to accommodate a manual operation position.

[0003] The steering column typically has a cover unit, also known as a guide box, outer cover tube, or box-type rocker arm, and the steering spindle is rotatably supported within this cover unit about a rotation axis. A manual steering input device, such as a steering wheel or the like, is mounted at the rearward end of the spindle facing the driver's position in the direction of travel. For longitudinal adjustment, an actuation unit supporting the steering spindle is telescopically adjustable within the cover unit along a longitudinal direction defined by the longitudinal axis, such that the cover unit and the actuation unit represent components adjustable relative to each other. Alternatively or additionally, height adjustment can be achieved by holding the cover unit by a carrier unit fixed to the vehicle body so that it can be adjusted in a vertical direction relative to the longitudinal axis. The carrier unit and the cover unit then form components adjustable relative to each other.

[0004] To achieve motorized adjustment of the steering column, it is generally known to introduce a linear motorized adjustment drive, such as an electric spindle drive, between two components that can be adjusted relative to each other. This actuation drive typically has a fixed drive unit and an activation or actuation element that can be adjusted linearly relative to the drive unit in the adjustment direction—in the case of a spindle drive, in the direction of the spindle axis. Because the drive unit is fixed to one component and the actuation element engages with the other, these components can be adjusted relative to each other by moving the adjustment drive together or separately. For example, the actuation unit and the steering wheel can move together in the longitudinal direction into or out of the cover unit, or the cover unit can pivot upwards or downwards relative to the vehicle body.

[0005] To improve passenger safety in the event of a vehicle collision, specifically a collision in which a driver strikes the steering wheel at high speed, it is known to incorporate an energy-absorbing device, also known as a collision device, connecting components of the steering column that can be adjusted relative to each other via an adjustable drive mechanism. This device absorbs the kinetic energy introduced into the energy-absorbing element upon collision, for example, by means of the plastic deformation of a deformable element. This allows for controlled movement of the component impacting the steering wheel.

[0006] As mentioned in DE 10 2019 203 363 A1, it is known to integrate an energy-absorbing device between an adjusting drive and components that can be adjusted relative to each other. Upon impact, these components can thus move relative to each other, for example, in the longitudinal direction, absorbing energy and being braked. A known solution in the prior art proposes that the gear mechanism of the drive unit is separated and the fragments are braked due to the high impact force acting upon the collision. While this arrangement may be compact, it is structurally complex and limited in terms of energy absorption characteristics, for example, in terms of the length of the absorption path. Alternative solutions, such as those disclosed in DE 10 2018 204 735 A1, while effective, are also complex and functionally limited.

[0007] In view of the problems described above, the object of the present invention is to achieve a simpler construction and expanded functionality. Summary of the Invention

[0008] According to the present invention, this objective is achieved by the steering column of the present invention.

[0009] A steering column for a motor vehicle includes at least two structural elements that can be adjusted relative to each other and engage with a linear adjustment drive that can be adjusted in a motorized manner along an adjustment axis in an adjustment direction. An energy-absorbing device including an energy-absorbing element is arranged between the adjustment drive and at least one of the structural elements. According to the invention, the energy-absorbing element has an inner portion that is coaxial with respect to the adjustment axis and is sleeve-connected to an outer portion by means of a shaped portion that extends at least partially coaxially, the outer portion being arranged coaxially on the outer side.

[0010] Unless otherwise stated, the adjustment direction will also be referred to as the axial direction in the following text. The formed part may also be referred to as the deformable part. The adjustment drive is connected to a component by means of an energy-absorbing element, such that in the event of a collision, during the relative movement of the structural component along the adjustment direction, kinetic energy is absorbed into the connection with the adjustment drive.

[0011] The energy absorption element according to the invention has an inner portion and an outer portion arranged coaxially with respect to an adjustment axis in a sleeve-like manner, the inner portion and the outer portion being connected to each other in a sleeve-like manner at the end face by means of a forming portion.

[0012] Due to the relative axial movement of the inner portion with respect to the outer portion, the inner portion can be rolled up in the region of the forming portion. During rolling up, the inner circumferential wall is radially outwardly rotated along its entire circumference in the direction toward the outer portion, wherein the rolled-up portion moves axially backward over the unrolled inner portion and becomes the outer portion around that portion. In other words, the inner portion passes through the forming portion and becomes the outer portion during rolling up through the plastic deformation of the forming portion.

[0013] The formed portion has a curved cross-section with a radius of curvature, the center of which, i.e., the center of curvature, lies on a curved trajectory concentrically arranged relative to the adjustment axis. The curved trajectory preferably extends radially in the circumferential direction between the inner and outer portions. The radius of curvature is preferably smaller than the radial distance between the inner and outer portions relative to the adjustment axis.

[0014] In the event of a collision, the axial impact force acting between the inner and outer portions is greater than the axial stiffness of the formed portion. Therefore, there is relative axial movement between the inner and outer portions. The inner portion is axially introduced into the outer portion along the adjustment direction. In this case, the bending trajectory and the center of curvature of the formed portion also move axially in the opposite manner to the inner and outer portions, that is, along the adjustment direction. The inner portion continuously transforms into the outer portion as it passes through the bending formed portion using plastic deformation, or vice versa, such that in any case, kinetic energy is continuously absorbed due to plastic deformation.

[0015] During the rolling, or inversion, process, three-dimensional plastic deformation occurs. In this three-dimensional plastic deformation device, the inner portion expands radially as it is introduced into the forming region and undergoes continuous annular forming along the aforementioned bending trajectory. This causes the inner circumference of the inner portion to flip outward, invert, or roll up such that, after passing through the forming section, the inner circumference of the inner portion forms the outer circumference of the outer portion. In this case, it is advantageous that a relatively high degree of forming can be achieved in a smaller space, allowing for relatively high energy absorption through a compact structural type.

[0016] Another advantage is that the coaxial arrangement of the internal parts within the external parts creates a telescoping arrangement, which provides relatively high flexural stiffness or anti-warping properties in the lateral direction relative to the adjustment axis. Therefore, this ensures to some extent that the energy-absorbing element will not experience uncontrolled lateral fracture or warping due to the high impact force introduced axially. The sleeve-like coaxial arrangement ensures lateral stability during the forming process, enabling controlled and uniform energy absorption in the event of a collision.

[0017] The forming portion can preferably be constructed continuously on the circumference according to a closed inner portion in the circumferential direction, which extends through the forming portion when rolled up.

[0018] Advantageously, the forming portion is in the form of a partially toroidal surface. The partially toroidal forming portion can, for example, be in the form of a semi-toroidal or quarter-toroidal surface, and in this case can include any form such as a channel, an axially projecting or protruding section, a rolled edge, or a similar form, extending at least partially concentrically with respect to the adjustment axis in the circumferential direction. The forming portion can connect at its radially inner edge to the inner portion at the end face, and at its radially outer edge to the outer portion. One advantage is the continuous, or preferably continuously differentiable, bending path of the cross-section in the forming region, which enables continuous, progressive plastic deformation and uniform energy absorption.

[0019] Preferably, the outer and / or inner and / or shaped portions can be constructed in a rotationally symmetrical manner. Preferably, the outer and / or inner portions can be constructed in a tubular manner. Regarding the adjusting axis, for this purpose, a coaxial outer tube or sleeve or inner tube or inner sleeve can be provided, preferably a hollow cylindrical shape with a circular cross-section. The advantages are consistent high flexural stiffness and anti-warping properties in all radial directions, and relatively low manufacturing and assembly complexity.

[0020] It is advantageous for the energy-absorbing element to be constructed as a single piece. The integral sleeve-like tubular component can be configured as a formed component with a low level of manufacturing complexity, for example, as a preferred cold-formed pressed component that can be formed from the tubular portion, or as a deep-drawn component.

[0021] The energy-absorbing element can be constructed from metallic and / or plastic materials. For example, a suitable product can be made of steel plate or steel pipe, thereby achieving high energy absorption with a small construction type. The energy absorption value can be predetermined and adjusted in a structurally simple manner by the material thickness, wherein a greater wall thickness enables greater energy absorption. Alternatively or additionally, plastic materials can be used, wherein the energy-absorbing element can be manufactured as a single unit, for example, as a component injection molded from thermoplastic material. Since the preferred one-piece metal base component is entirely or partially provided with plastic material, for example by means of coating, covering, or overmolding, optimized plastic deformation behavior can be achieved. Furthermore, friction during deformation can be reduced, thereby achieving uniform energy absorption.

[0022] Preferably, the outer or inner portion is axially connected to a component by means of a support element, and the axial support abuts against the component. The support element may preferably have a support portion that projects laterally relative to the adjustment direction and has a coaxial opening, the outer portion being fixed to the edge of the opening, and in the event of a collision, the inner and outer portions can be axially introduced through the opening. The support element may be configured to simultaneously hold and axially support the adjustment drive. The support element may, for example, take the form of a flange that connects to the outer portion.

[0023] The component may include a cover unit and an actuation unit, wherein the actuation unit may be adjustable in the longitudinal direction along a longitudinal axis, and / or include a support unit and a cover unit, wherein the cover unit may be adjustable relative to the support unit in the longitudinal and / or vertical directions. In the actuation unit, a steering spindle may be rotatably supported about the longitudinal axis, to which a steering wheel or the like may be fitted as a manual steering input device.

[0024] Because the adjusting drive device, including the energy absorption device according to the invention, is positioned between the cover unit and the actuation unit, energy can be absorbed in the longitudinal direction to effectively brake the component impacting the steering wheel in the event of a collision. Due to the invention, a compact structural type can be manufactured, and due to the aforementioned high level of anti-warping and flexural stiffness of the energy absorption element, a high level of operational reliability is ensured even under extreme loads. These advantages can be additionally or alternatively achieved by means of the arrangement between the vertically adjustable cover unit and the load-bearing unit fixed to the body.

[0025] The adjustment drive can be axially supported on either the inner or outer portion. Since the adjustment drive is axially fixed to the inner portion in the adjustment direction and the outer portion is preferably fixed to a component by means of a support element, the energy absorption device according to the invention can be structurally integrated in a simple and reliable manner.

[0026] It can be specified that the adjustment drive device has a motorized drive unit and an actuating element adjustable relative to the adjustment drive unit. The drive unit preferably has an electric motor whose driving torque can be converted into a relative linear displacement of the actuating element in the adjustment direction, preferably by means of a gear mechanism of appropriate construction. The drive unit can be connected to and axially supported by an energy-absorbing element, which is connected to a fixed component, wherein the actuating element is connected to another component adjustable relative to the fixed component, or vice versa.

[0027] Preferably, the adjustment drive can have a spindle drive. In the spindle drive, the spindle nut and the threaded spindle engaged therein can be driven rotatably relative to each other about the spindle axis in a manner known per se, thereby adjusting the spindle nut and the threaded spindle linearly relative to each other in the direction of the spindle axis. The spindle drive can be in the form of a rotary spindle drive or an immersion spindle drive. In a rotary spindle drive, the threaded spindle is rotatably driven in the drive unit and, in this case, axially supported on a component, and the spindle nut is axially supported in a fixed manner relative to this rotation on another adjustable component. In an immersion spindle drive, the spindle nut is rotatably driven in the drive unit and, in this case, axially supported on a component, and the threaded spindle is axially supported in a fixed manner relative to this rotation on another adjustable component. Preferably, the adjustment axis is the same as the spindle axis, such that the energy-absorbing element according to the invention is constructed coaxially relative to the spindle axis. Therefore, symmetrical coaxial force introduction can be achieved with virtually no potentially destructive lateral forces, thereby increasing functionality and operational reliability, particularly compared to asymmetrical arrangements where the adjustment drive is supported on one side of the energy-absorbing element and lateral forces are unavoidable. According to the invention, the construction can be simplified because the high level of flexural stiffness and anti-warping properties of the energy-absorbing element according to the invention results in the elimination of the need for additional guiding mechanisms for lateral stability.

[0028] Advantageously, the spindle drive can be configured to have a drive unit connected to the energy absorption device. The internal portion can be, for example, directly connected to the drive housing of the drive unit or structurally integral. The drive housing—in which the spindle nut or threaded spindle is supported so as to be coaxially driven to rotate—can preferably be tubular and, in its dimensions, can substantially correspond to the preferably tubular internal portion. This allows for structural integration that is simple in construction and enables a compact structural design. Attached Figure Description

[0029] The advantageous embodiments of the present invention will now be described in more detail with reference to the accompanying drawings, in which:

[0030] Figure 1 A schematic perspective view of the steering column according to the invention in normal operating condition is shown.

[0031] Figure 2 The following is shown: Figure 1 The steering column,

[0032] Figure 3 It shows the passage along the adjustment axis according to Figure 1 The cross-section of the steering column,

[0033] Figure 4 It shows crossing according to Figure 2 The steering column, such as Figure 3 The cross section shown,

[0034] Figure 5 It shows Figure 4 Magnified detailed view of the energy absorption device.

[0035] Figure 6 It shows the relationship with Figure 3 A similar magnified cross-section of the energy absorption device in the second embodiment under normal operating conditions. Detailed Implementation

[0036] In the various figures, the same parts are always given the same figure labels, and therefore are usually named or mentioned only once.

[0037] Figure 1 and Figure 2 A schematic perspective view of the steering column 1 according to the invention, as viewed obliquely from the right side relative to the direction of travel of a vehicle (not shown), is shown, wherein a steering wheel (not shown) is held in the operating area. In this example, Figure 1 It shows the normal operating status, and Figure 2 The state after the collision is shown (collision state).

[0038] The steering column 1 includes a support unit 2 having a fastening device 21 in the form of a fastening hole for mounting to a vehicle body (not shown). The support unit 2 holds an actuation unit 3, which is received in a cover unit 4, also referred to as a guide box or box-type rocker arm, within an external cover.

[0039] The actuation unit 3 has an internal cover 31 (cover tube) in which a steering spindle 32 is rotatably supported about a longitudinal axis L, which extends axially in the longitudinal direction, that is, in the direction of the longitudinal axis L. A fastening portion 33 is formed at the rear end on the steering spindle 32, on which a steering wheel (not shown in this example) can be fitted.

[0040] To generate longitudinal adjustment, the actuation unit 3 is received in the cover unit 4 so that it can be telescopically displaced in the direction of the longitudinal axis so that the steering wheel connected to the steering spindle 32 can be positioned forward and backward relative to the carrier unit 2 in the longitudinal direction, as indicated by the double-headed arrow parallel to the longitudinal axis L.

[0041] The cover unit 4 is supported in a pivot bearing 22 on the support unit 2 so that it can pivot about a horizontal pivot axis 20 that is laterally positioned relative to the longitudinal axis L. In the rear region, the cover unit 4 is connected to the support unit 2 by means of an actuating rod 41. The actuating rod 41 is connected by means of the actuation drive device 6 shown in the figure (see figure 6). Figure 2 The rotating motion of the cover unit 4 allows it to pivot relative to the support unit 2 around the pivot axis 20, which is horizontally positioned in the installed state. This allows the steering wheel, which is fitted to the fastening part 33, to be adjusted in the vertical direction H indicated by the double-headed arrow.

[0042] In this first embodiment, the adjustment drive device 5 is in the form of an immersion spindle drive device and has a spindle nut 51 in which a threaded spindle 52 is engaged, the threaded spindle 52 extending along its spindle axis S. The spindle axis S is the same as the adjustment axis indicating the linear adjustment direction in the context of this invention. In the example of the adjustment drive device 5 shown for longitudinal adjustment, the spindle or adjustment axis S is positioned parallel to the longitudinal axis L.

[0043] The threaded spindle 52 is connected to the actuation unit 3 by means of a fastening element 54, that is, fastened in the direction of the spindle axis S or the longitudinal axis L, and is fixed relative to rotation about the spindle axis S. The fastening element 54 is formed on its rear end by means of a transmission element 34.

[0044] The transmission element 34 extends from the actuation unit 3 through the slotted through opening 42 in the cover unit 4. In order to adjust the steering column 1 in the longitudinal direction, the transmission element 34 can move freely in the longitudinal direction within the through opening 42.

[0045] The spindle nut 51 is axially supported in the drive unit 53 in the direction of the spindle axis S, and can be rotatably driven by an electric motor 55 relative to the threaded spindle 52 around the spindle axis S.

[0046] The rotatable spindle nut 51 and the threaded spindle 52, which is fixed relative to it in terms of rotation, create a so-called immersion spindle drive. In this case, depending on the rotation direction of the motor 55, the threaded spindle 52 can be shifted relative to the spindle nut 51 in the direction of the spindle axis S, so that the actuation unit 3 connected to the threaded spindle 52 can be adjusted accordingly relative to the cover unit 4 connected to the spindle nut 51 in the direction of the longitudinal axis L.

[0047] The adjustment drive device 5 is supported on the covering unit 4 by means of the energy absorption device 6 according to the invention. For clarity, in Figure 3 and Figure 4 The diagram shows a longitudinal section along the main axis S. Figure 3 As shown in Figure 1 In the normal operating state, and Figure 4 As shown in Figure 2 The state after a collision. Figure 5 It shows Figure 4 A magnified detailed illustration of the energy absorption device 6 in the diagram.

[0048] The energy absorption device 6 according to the invention has a rotationally symmetrical energy absorption element 61, which is coaxial with respect to the main shaft axis S, and the energy absorption element 61 is constructed in a sleeve-like manner according to the invention, as described below.

[0049] Figure 5 The enlarged view shows that the energy absorption element 61 has a cylindrical inner portion 62, which is arranged coaxially with respect to the main shaft axis S, and the inner portion 62 is incorporated into an outer portion 64 that surrounds the inner portion 63 in a coaxial manner via an end face rolled edge forming portion 63.

[0050] The outer portion 64 has a circumferential flange 65, which is axially supported on a support element 66, and the support element 66 is securely connected to the cover unit 4.

[0051] The hollow cylindrical inner portion 62 is coaxially received and secured within the drive housing 53. In this configuration, the spindle nut 51—which has a worm gear on its outer side that engages, for example, with a screw driven by the motor 55—can preferably be rotatably supported coaxially around the spindle axis S within a bearing arrangement 56 inside the tubular inner portion 62 and is axially supported.

[0052] like Figure 4 As shown, in the event of a collision, a higher axial impact force C is introduced into the actuation unit 3 via the steering spindle 32. This impact force C acts axially relative to the spindle axis S on the inner portion 62 of the energy-absorbing element 61 via the threaded spindle 52, spindle nut 51, and drive housing 53. In this case, the inner portion continuously bends or folds in a radially outward direction through a plastic annular bend along a bending trajectory B extending coaxially around the spindle axis S, wherein the inner portion merges into the outer portion 64, or in other words, the inner portion is formed as a component of the outer portion 64. This kinetic energy-consuming plastic forming operation... Figure 5 The dashed arrow is used to indicate this.

[0053] The free end of the outer portion 64 is secured to the cover unit 4 via the flange 65 by means of the support element 66. As described above, during deformation in the event of a collision, the energy-absorbing element 61 continuously rolls up or inverts, wherein, during rolling up, the substantially semi-annular shaped portion 63 thereby moves forward relative to the cover unit 4 along the direction of the impact force C along the bending trajectory B. Therefore, the kinetic energy introduced via the actuation unit 3 is absorbed, and the actuation unit 3 is braked in a controlled manner relative to the cover unit 4.

[0054] Figure 6 It shows the passage along the main axis S through and Figure 3 Compared to the enlarged cross-section of the energy absorption device in the modified embodiment under normal operating conditions before the collision, in this case, the forming portion 53 was not initially as... Figure 3 Instead of being a semi-toroidal circle as shown, it is approximately a quarter-toroidal circle. The outer portion 64 adjacent to the formed portion 63 initially extends radially between the outer edge of the formed portion 63 and the inner edge of the flange 65 in this unformed state. In the event of a collision, the inner portion 62 is introduced axially through the flange 65 in the direction of the collision force C, as in the first embodiment, wherein the outer portion 64 moves in the opposite axial direction outside the inner portion 62, such that, in principle, a collision occurs. Figure 5The state shown. In this case, the rolled edge of the formed portion 63, which has a cross-section of approximately a quarter circle in normal operation, is initially formed with a cross-section of semi-circular, and subsequently takes the form of an approximately semi-toroidal surface. The energy absorption mechanism described is the same.

[0055] For height adjustment, a second motorized adjustment drive 7 can be provided, which engages between the cover unit 4 and the support unit 2. This adjustment drive 7 can also be in the form of a main shaft drive and can also include an energy absorption device 6, which can be constructed according to the invention or in a different manner.

[0056] List of reference numerals

[0057] 1 Steering column

[0058] 2 bearing units

[0059] 20 pivot axis

[0060] 21 Fastening device

[0061] 22 pivot bearing

[0062] 3 Actuation Units

[0063] 31 Inner Cover (Cover Tube)

[0064] 32 steering spindle

[0065] 33 Fastening parts

[0066] 34 transmission components

[0067] 4 Coverage Units

[0068] 41 Actuating rod

[0069] 42 through openings

[0070] 5 Adjustment drive device

[0071] 51 Spindle Nut

[0072] 52 threaded spindle

[0073] 53 drive units

[0074] 54 Fastening Components

[0075] 55 motor (drive motor)

[0076] 56 bearing arrangement structure

[0077] 6 Energy Absorption Devices

[0078] 61 Energy Absorption Element

[0079] 62 Internal Parts

[0080] 63 forming parts

[0081] 64 External Parts

[0082] 65 flange

[0083] 66 support elements

[0084] 7 Adjustment drive device

[0085] L longitudinal axis

[0086] H vertical direction

[0087] S-axis spindle axis (threaded spindle axis)

[0088] B Curved trajectory

[0089] C Collision Force

Claims

1. A steering column (1) for a motor vehicle, comprising at least two structural elements (3, 4) which can be adjusted relative to one another and are engaged with a linear adjustment drive (5) which can be adjusted in an adjustment direction along an adjustment axis (S) in a motorized manner, the linear adjustment drive (5) having a main shaft nut (51) in which a threaded main shaft (52) is engaged, wherein An energy absorption device (6) including an energy absorption element (61) is arranged between the regulating drive device (5) and at least one of the structural elements (3, 4). Its features are, The energy-absorbing element (61) has an inner portion (62) that is coaxial with respect to the adjustment axis (S) and is sleeve-connected to an outer portion (64) by means of a shaped portion (63) that extends at least partially coaxially, the outer portion (64) being arranged coaxially on the outside; the spindle nut (51) is disposed inside the inner portion (62) of the energy-absorbing element (61).

2. The steering column according to claim 1, characterized in that, The formed portion (63) is in the form of a partial toroidal surface.

3. The steering column according to any one of claims 1-2, characterized in that, The outer portion (64) and / or the inner portion (62) and / or the shaped portion (63) are constructed in a rotationally symmetrical manner.

4. The steering column according to any one of claims 1-2, characterized in that, The outer portion (64) and / or the inner portion (62) are constructed in a tubular manner.

5. The steering column according to any one of claims 1-2, characterized in that, The energy absorption element (61) is constructed as a single piece.

6. The steering column according to any one of claims 1-2, characterized in that, The energy absorption element (61) is constructed of metallic and / or plastic materials.

7. The steering column according to any one of claims 1-2, characterized in that, The outer portion (64) or the inner portion (62) is axially connected to the structural element by means of a support element (66) and is axially supported against the structural element.

8. The steering column according to any one of claims 1-2, characterized in that, The structural element includes a cover unit (4) and an actuation unit (3), the actuation unit (3) being adjustable in the longitudinal direction along the longitudinal axis (L) in the cover unit (4), and / or the structural element includes a support unit (2) and a cover unit (4), the cover unit (4) being adjustable relative to the support unit (2) in the longitudinal direction and / or vertical direction.

9. The steering column according to any one of claims 1-2, characterized in that, The adjustment drive device (5) is axially supported on the inner part (62) or the outer part (64).

10. The steering column according to any one of claims 1-2, characterized in that, The adjustment drive device (5) has a motor drive unit (55, 53) and an adjustment element that can be adjusted relative to the motor drive unit (55, 53).

11. The steering column according to any one of claims 1-2, characterized in that, The adjustment drive device (5) has a main shaft drive device.

12. The steering column according to claim 11, characterized in that, The spindle drive has a drive unit (53) connected to the energy absorption device (6).

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