STEERING COLUMN FOR A MOTOR VEHICLE

Description

State of the art

[0001] The invention relates to a steering column for a motor vehicle, which comprises a steering shaft mounted so as to be rotatable about its longitudinal axis relative to a steering column housing and has a rotation limiter for limiting the rotation of the steering shaft, which has a winding core connected in a rotationally fixed manner to the steering shaft, to which an elongated band element is attached which is connected to the steering column housing and is flexibly deformable transversely to its longitudinal extent, said band element having at least one band section which can be wound on the winding core in a winding direction about the longitudinal axis, wherein the winding direction of the band section is reversible.

[0002] Such steering columns with a rotation limiter are particularly suitable for steer-by-wire steering systems.

[0003] The steering shaft is rotatably mounted in the support unit, which is firmly connected to the vehicle body, or is rotatably supported by the support unit. To steer the vehicle, the driver inputs a steering command by turning the steering wheel attached to the driver-side, rear end of the steering shaft. This command is converted into a steering angle of the vehicle's steerable wheels. While in a conventional steering system the steering shaft is mechanically connected to the wheels via a steering gear, in a steer-by-wire steering system the rotation of the steering shaft is detected by sensors and converted into an electrical control signal to actuate electric steering actuators. Because there is no mechanical coupling to the wheels, the rotation of the steering shaft is not limited by the mechanical end stop of the wheels when the maximum steering angle is reached.In order to avoid excessive steering and to simulate a realistic steering feel, it is known to limit the maximum possible angle of rotation of the steering wheel by means of a rotation limiter, which forms a limiting device for limiting the maximum possible rotation of the steering shaft.

[0004] A steering column with a rotation limiter of the type mentioned above is known, for example, from DE 10 2017 209 664 A1 or DE 100 51 187 A1. This has a flexible, elongated band element which, as a spiral spring, is spirally wound on a winding core which is connected in a rotationally fixed manner to the steering shaft and to which one end, namely the inner end, of the band element is attached. The other, outer end of the band element is firmly connected to the steering column housing, which represents a part of the steering column which is stationary relative to the steering shaft. By actuating the steering wheel, the steering shaft can be rotated in a direction of rotation which corresponds to the winding direction of the spiral spring until the spiral spring comes to a stop, whereby a band section of the band element is tightly wound on the winding core.Because the band element between the winding core and the steering column housing is then tensioned, the maximum steering angle is limited and further rotation in this direction is not possible.

[0005] Because the coil spring has a predetermined winding direction, it can only be used to limit the steering angle in one direction of rotation. However, since it is absolutely necessary to limit the steering angle in both possible directions of rotation, the current state of the art requires two coil springs wound in opposite directions per steering column. This results in correspondingly high manufacturing and assembly effort, requires a relatively large installation space, and is expensive.

[0006] A steering column of the type mentioned above is described in WO 2018 / 139044 A1.

[0007] In view of the problems explained above, it is an object of the present invention to reduce the expenditure for the revolution limiter and to enable a smaller design. Description of the invention

[0008] This object is achieved according to the invention by a steering column having the features of claim 1, claim 2 or claim 3. Advantageous further developments emerge from the subclaims.

[0009] In a steering column for a motor vehicle, which comprises a steering shaft which is mounted so as to be rotatable about its longitudinal axis relative to a steering column housing and which has a rotation limiter for limiting the rotation of the steering shaft, which has a winding core which is connected in a rotationally fixed manner to the steering shaft and to which an elongated band element which is connected to the steering column housing and which is flexibly deformable transversely to its longitudinal extent is attached, which band element has at least one band section which can be wound on the winding core in a winding direction around the longitudinal axis, wherein the winding direction of the band section is reversible, it is provided according to the invention that at least two band sections are provided which can be wound one above the other in at least two turns.

[0010] Alternatively, in a steering column for a motor vehicle, which comprises a steering shaft which is mounted so as to be rotatable about its longitudinal axis relative to a steering column housing and which has a rotation limiter for limiting the rotation of the steering shaft, which has a winding core which is connected in a rotationally fixed manner to the steering shaft and to which an elongated band element which is connected to the steering column housing and which is flexibly deformable transversely to its longitudinal extent is attached, which band element has at least one band section which can be wound on the winding core in a winding direction around the longitudinal axis, wherein the winding direction of the band section is reversible, it can be provided according to the invention that the winding core and / or the steering column housing have at least one transverse slot through which the band element is passed.

[0011] Alternatively, in a steering column for a motor vehicle, which comprises a steering shaft which is mounted so as to be rotatable about its longitudinal axis relative to a steering column housing and which has a rotation limiter for limiting the rotation of the steering shaft, which has a winding core which is connected in a rotationally fixed manner to the steering shaft and to which an elongated band element which is connected to the steering column housing and which is flexibly deformable transversely to its longitudinal extent is attached, which band element has at least one band section which can be wound on the winding core in a winding direction around the longitudinal axis, wherein the winding direction of the band section is reversible, it can be provided according to the invention that the band element is designed as a closed loop.

[0012] According to the invention, the winding direction can be switched between the two fundamentally possible winding directions. This makes it possible for the same strip section to be wound or wound in the same axial winding area of ​​the winding core either in a clockwise or counterclockwise direction.

[0013] Because, according to the invention, a strip section can be wound alternatively on the winding core in both possible, opposing winding or rotation directions, a rotation angle limitation can be achieved for the first time using a single strip element. This results in the advantage that the manufacturing and assembly effort is lower than in the prior art, which requires two strip elements. Furthermore, less installation space is required, advantageously enabling a compact design of the rotation limiter.

[0014] Preferably, the strip section has a first surface and a second surface configured in the same direction, wherein the first surface can be brought into contact with the winding core in one winding direction and the second surface can be brought into contact with the winding core in the opposite winding direction. In other words, depending on the winding direction, the first surface or the second surface of the strip section rests against the winding core.

[0015] In the neutral position, which corresponds to the center position of the steering between the two end positions of the maximum angle of rotation provided by the rotation limiter—these are the stop positions—the band element in the invention is unwound from the winding core. If the steering wheel is turned from the center position to the right or left, the band element is wound onto the winding core in a clockwise direction or, with the winding direction reversed, counterclockwise direction. In both cases, the rotation limit is reached when the available winding section is wound onto the winding core. A stop situation is then realized in which the band element absorbs the steering torque present between the winding core and the steering column housing.This mode of operation is fundamentally not possible in the state of the art, since the specific winding direction for a band element is fixed by the direction of rotation of the spiral spring and cannot be reversed.

[0016] This allows for a simple and robust design of the revolution limiter, which offers extremely smooth operation. Furthermore, its function is less sensitive to component and dimensional tolerances.

[0017] In the impact situation, the band element is subjected to tensile stress. Preferably, the band element is stiffer in the tensile direction than in at least one bending direction.

[0018] It can preferably be provided that the band section between the winding core and the steering column housing exerts an equal restoring moment in both winding directions, regardless of the winding direction. The band element is continuously bent during winding and, due to the reaction force between the winding core and the steering housing counteracting the bending, exerts a restoring moment on the steering shaft. The magnitude of the restoring moment depends on the flexurally elastic properties of the band element. For the primary function of the rotation limiter, which is to limit the angle of rotation, it is essential that the restoring moment is as identical as possible for both directions of rotation of the steering wheel. To achieve this in the invention, the band section of the band element is preferably designed symmetrically with regard to the bending during winding.This allows the bending section to be bent to the right or left transversely to its longitudinal extension with the same force. Accordingly, winding onto the winding core in the winding direction and in the opposite winding direction requires essentially the same torque, which acts as a restoring torque on the steering shaft. According to the invention, this "equal magnitude" means that the magnitude of the restoring force is consistent within specified tolerance limits for the same winding state and angle of rotation.

[0019] One embodiment of the invention can be realized in that the winding core has an outer shell. This outer shell is preferably cylindrical. It is preferably surrounded by a hollow cylindrical inner shell of the steering column housing at a radial distance. The cylindrical outer shell has a winding section with an axial width that is preferably adapted to the width of the band section. Because only one band element is required in the axial direction according to the invention, the axial dimension of the outer shell can be smaller than in the prior art, in which two spiral band elements are arranged next to one another in the axial direction. This results in the advantage of a more compact design. The outer shell of the winding core is preferably arranged coaxially in a hollow cylindrical interior of the steering housing, which surrounds the winding core continuously over its circumference or at least in segments.The hollow cylindrical interior can be formed in a drum- or tubular section of the steering housing, the inner shell of which has a predetermined radial distance from the outer shell. It can preferably be provided that the steering housing is closed with a cover, preferably sealed airtight and / or liquid-tight using a corresponding sealing element.

[0020] The radial distance between the outer and inner sheaths can preferably be dimensioned such that it is greater than a permissible minimum bending radius of the strip section. This permissible minimum bending radius indicates how much the strip element can be reversibly bent transversely to its longitudinal extent without any, or at least no relevant, plastic deformation of the strip element occurring. This ensures that the strip element can be bent from one direction to the other in the neutral central position between the winding core and the steering column housing for reversing the winding direction according to the invention.

[0021] It can be provided that the outer diameter of the outer sheath is less than or equal to 0.5 times the inner diameter of the inner sheath. This makes it possible to achieve a radial distance between the inner and outer sheath that is greater than or equal to 0.5 times the outer diameter of the outer sheath, which corresponds to the bending radius of the strip section when winding onto the winding core. Due to this ratio between the inner and outer diameters, the strip element is not bent when the winding direction is changed, or at least not significantly more than during winding. The bending stress on the material remains so low that a large number of reversals of the winding direction are possible without material damage, and a high level of durability and reliability is achieved.

[0022] It is possible for the length of the strip section between the winding core and the steering column housing to be smaller than the inner circumference of the inner sleeve, preferably smaller than 0.5 times the sum of the inner and outer circumferences. In the neutral center position, the strip section that can be wound onto the winding core is unwound from the winding core and is located exposed between the inner and outer sleeves. This ratio allows the strip section to conform to the inner sleeve from the inside over its entire free length, so that when the winding direction is reversed while passing through the center position, a relatively small bend occurs, thus protecting the material.

[0023] It is advantageous for the band section between the winding core and the steering column housing to be designed as a tension strand. When the maximum permissible angle of rotation is reached, the band section is wound onto the winding core and stretched between the mutually rotatable circumferential sections of the winding core and the steering column housing. It is advantageous for the band element in the tension strand to be subjected primarily to tensile stress, so that it can safely absorb the steering torque applied to the steering wheel as a tensile force without the need for additional support or securing measures. "Primarily subjected to tensile stress" means that, in the case of an equivalent stress, for example, according to the deformation energy hypothesis, at least 90% is attributable to tensile stress.

[0024] An advantageous embodiment provides at least two belt sections. The belt sections can be distributed around the circumference, preferably evenly distributed. For example, two tension strands according to the previously described embodiment can be connected radially opposite each other to the outer surface of the winding core, and correspondingly to the steering column housing. This advantageously creates a redundant arrangement that provides reliable rotation angle limitation even in the event of a belt section failure.

[0025] An advantageous further development provides that the strip section can be wound at least twice over each other.

[0026] An advantageous development provides that at least two strip sections can be wound one above the other with at least two turns. Preferably, two tension strands engaging the winding core in the same axial winding section can be wound together with the same winding direction, depending on the direction of rotation. The two strip sections are wound one above the other in the radial direction, so that the two strip sections are arranged in the form of a two-turn spiral. This is advantageous because two or more strip sections can be accommodated on the winding core without increasing the axial installation space. This allows for a compact, redundant arrangement.

[0027] The winding core and / or the steering column housing can have at least one transverse slot through which the band element is passed. A transverse slot forms a slot that can, for example, run through the winding core transversely to the longitudinal axis. Accordingly, a steering column housing that surrounds the winding core in a drum-like manner can have one transverse slot per band section that runs radially outwards from the inner casing. A band element can be easily hooked into the transverse slot(s) so that it is reliably fastened to the winding core and / or the steering column housing in both winding directions with respect to the circumferential forces that occur during winding. An advantageous further development is that the transverse slot(s) are open at the end, i.e. axially, so that a flat band element can be inserted axially into the transverse slot and fixed in place, its width in the direction of the longitudinal axis.

[0028] It may be advantageous for the band element to be designed as a closed loop. A closed loop comprises an annular endless band, which, due to its closed shape, can be attached to the winding core and the steering column housing with little effort and without additional fastening elements. Hook-shaped hangers or abutments, for example, can be arranged on the winding core and the steering column housing for attachment. A reliable arrangement for attaching the closed loop, which can be implemented with little effort, can be created by passing the band element through a transverse slot extending across the winding core.The band element emerges from the transverse slot via two tension strands radiating outward from the winding core, extending as band sections to the inside of the steering column housing, where they are guided through two outwardly extending transverse slots, also arranged diametrically opposite one another with respect to the longitudinal axis. Between these two transverse slots, the band element is guided around the outside of the steering column housing. In the transverse slots, the band element is fixed circumferentially relative to the outer casing of the core element and also relative to the steering column housing. If the transverse slots are axially open, the closed loop of the band element can simply be inserted axially into the transverse slots for assembly. In this way, a particularly reliable connection can be created without the need for additional fastening devices.An advantage of the inventive reversal of the winding direction is that the band sections emerge from the transverse slots in a radial direction, so that they can be bent in both circumferential directions.

[0029] The belt element can preferably be made of a fiber fabric, for example, a cord. A fiber fabric can be designed to withstand high tensile loads and be particularly flexible through the use of high-strength fibers—for example, metal, aramid, or carbon fibers, or the like. The high flexibility means that—unlike, for example, a coil spring—only relatively low restoring forces occur during bending deformation during winding. This property is also referred to as pliable or dimensionally unstable. As a result, the torque required for winding and reversing the winding direction is correspondingly low, and elastic restoring forces dependent on the angle of rotation, which are irrelevant and undesirable for the function of the revolution limiter, do not occur or are negligibly small. By using high-tensile fibers, a high tensile strength of the belt element can be achieved with small dimensions.The band element can, for example, comprise a flat, belt-shaped, woven band.

[0030] The band element can comprise a plastic and / or a rubber material and / or a glass material and / or a metal material, or combinations thereof. Fiber composite materials can preferably be used.

[0031] The steering column housing can be part of a casing unit or form one that is connected to a support unit mountable on the vehicle. The steering column housing can be fixed or manually or motor-adjustable relative to the support unit. Furthermore, the steering shaft can be fixed relative to the steering column housing or the support unit in the direction of the longitudinal axis, or it can be adjustable, likewise manually or motor-driven. In this way, a fixed steering column or one that is adjustable in height and / or length can be formed, whereby the adjustment can be performed manually or by means of motor-driven adjustment drives. Description of the drawings

[0032] Advantageous embodiments of the invention are explained in more detail below with reference to the drawings. In detail: Figure 1 shows a steering column according to the invention in a schematic perspective view, Figure 2 shows the steering column according to Figure 1in a further perspective view, Figure 3 a schematic axial view of the rotation limiter of the steering column according to Figures 1 and 2 in a first rotation angle position (neutral center position), Figure 4 a schematic axial view of the revolution limiter as in Figure 3 in a second rotation angle position (intermediate position), Figure 5 a schematic axial view of the revolution limiter as in Figure 3 in a third rotation angle position (stop position with respect to rotation to the right = clockwise), Figure 6 a schematic axial view of the rotation limiter as in Figure 3 in a fourth rotation angle position (intermediate position) in the other winding direction compared to that in Figure 4 , Figure 7 a schematic axial view of the revolution limiter as in Figure 3 in a fifth rotation angle position (stop position with respect to rotation to the left = counterclockwise). Embodiments of the invention

[0033] In the various figures, identical parts are always provided with the same reference symbols and are therefore usually named or mentioned only once.

[0034] Figures 1 and 2 show in different perspective views a steering column 1 of a steer-by-wire steering system, in Figure 1 from the left rear, and in Figure 2 from the front left, in each case in relation to the direction of travel.

[0035] The steering column 1 comprises an actuating unit 2 having a steering column housing 21, also referred to as a casing unit or outer casing tube. A casing tube 22 is accommodated in the steering column housing 21, in which a steering shaft 23 is rotatably mounted about the longitudinal axis L. At the rear end, facing the driver with respect to the direction of travel, the steering shaft 23 has a connecting section 24 for attaching a steering wheel (not shown here). For the longitudinal adjustment of the steering wheel, the casing tube 22 is telescopically adjustable relative to the steering column housing 21 in the direction of the longitudinal axis L, as indicated by the double arrow parallel to the longitudinal axis L.

[0036] The actuating unit 2 is held by a support unit 3, which has fastening openings 31 for attachment to a motor vehicle body (not shown). In a front region, the steering column housing 21 is pivotably mounted on the support unit 3 about a horizontal pivot axis 32 extending transversely to the longitudinal axis L, thereby enabling height adjustment of the rear, driver-side end of the steering shaft 23 in the height direction H.

[0037] The support unit 3 has two side cheeks 33 spaced rearward from the pivot axis 32, which extend downwards parallel to one another and between which the steering column housing 21 is received.

[0038] A clamping device 4 comprises a clamping bolt 41, which is guided through both side walls 33 through elongated holes 34 running in the vertical direction H. A clamping lever 42 is attached to the clamping bolt 41, with which the clamping bolt 41 can be manually rotated about its axis.

[0039] The clamping device 4 has a clamping gear 43, which converts a rotation of the clamping bolt 41 about its axis into a clamping stroke in the direction of its axis, for example by means of a conventional wedge-disk, cam, or tilting pin gear. The clamping axis 41 is supported externally against the two side cheeks 33 via the clamping gear 43. If the clamping lever 41 is rotated in one direction into the clamping or fixing position by manually actuating the clamping lever 42, the two side cheeks 33 are pressed against each other, and as a result the steering column housing is clamped between the side cheeks 33 and thereby fixed relative to the support unit 3 in the vertical direction H. In the process, the steering column casing 22 is also clamped in the steering column housing 21, so that fixing in the direction of the longitudinal axis L also occurs.

[0040] When the clamping lever 42 is brought into the release position by a reverse rotation, the clamping stroke is canceled, and the clamping of the steering column housing 21 between the side cheeks 33 is released. The clamping bolt 41 can then be moved up or down in the elongated holes 34 in the height direction H together with the steering column housing 21 for height adjustment, and the steering column casing 22 can be telescoped forward into the steering column housing 21 in the direction of the longitudinal axis L for longitudinal adjustment.

[0041] A rotation limiter 5 designed according to the invention is mounted at the front of the steering column 1. This is in Figure 2 shown in a perspective view open at the front to provide a view of the interior. Figures 3, 4 and 5An axial view from the front—in the direction of the longitudinal axis L—is shown in different rotational angle positions of the steering shaft 23. The rotation limiter 5 can be closed with a cover (not shown).

[0042] The rotation limiter 5 has a housing designed as a drum 51, which forms part of the steering column housing 21, with which it is formed integrally or firmly connected. The drum 51 is hollow-cylindrical, with an inner casing 52 arranged coaxially to the longitudinal axis L.

[0043] In the drum 51 there is arranged a winding core 53 which is fixedly connected to the steering shaft 23 and has a cylindrical outer shell 54 which is coaxial with the longitudinal axis L.

[0044] The outer diameter of the outer shell 54 is preferably less than or equal to 0.5 times the inner diameter of the inner shell 52. The inner shell 52 has a radial distance A from the outer shell 54 (see Figure 3), which is preferably equal to or greater than 0.5 times the diameter of the winding core 53, i.e. the outer diameter of the outer jacket 54.

[0045] The winding core 53 has a transverse slot 55 extending diametrically across the longitudinal axis L and axially open toward the front. The transverse slot 55 opens diametrically opposite into the outer casing 54.

[0046] The drum 51 has two transverse slots 56, 57 which are diametrically opposite one another with respect to the longitudinal axis L and which form passages from the inner shell 52 to the outside of the drum 51 and are also axially open at the end.

[0047] A band element 6, which is designed as a closed loop, is mounted between the winding core 53 and the drum 51, as shown in Figure 3is clearly visible. The band element 6 is a highly flexible, flat band with a width adapted to the axial width of the outer sheath 54, which also approximately corresponds to the axial width of the inner sheath 52. The band element 6 can comprise a high-strength fiber fabric or a cord composite and is highly flexible, so that when bent transversely to its longitudinal extent and its width, only a negligible elastic restoring force occurs.

[0048] The band element 6 is guided through the transverse slot 55 of the winding core 53 transversely to the longitudinal axis L, wherein the transverse slot 55 is provided with an insertion bevel to effectively prevent damage to the band element 6. This creates a rotationally fixed connection between the band element 6 and the winding core 53. The band section 61, which emerges radially from the winding core 53 on one side, extends through one transverse slot 56 to the outside of the drum 51, and the band section 62, which emerges radially from the winding core 53 on the other side, extends through the other transverse slot 57 to the outside of the drum 51. The band sections 61 and 62 are connected to one another as a closed loop by a band section 63 which is guided outside the drum 51. The band element 6 is thereby fixed in the circumferential direction with respect to the inner casing 52.

[0049] The function of the rotation limiter 3 is explained using the phase diagrams in Figures 3, 4 and 5, which each show different rotational angle positions of the steering shaft 23 and the winding core 53 connected thereto.

[0050] Figure 3 shows the neutral center position. The two band sections 61, 62 emerge radially from the transverse slot 55 and extend in an arc-shaped manner, free of tensile stress, to the inner casing 52, where they cling to the transverse slots 56, 57, where they extend outward.

[0051] When the steering shaft 23 is rotated clockwise, the winding core 53 rotates in the view of the Figures 2 , 3, 4 and 5 counterclockwise, as indicated by the arrow, into the Figures 6 and 7 clockwise.

[0052] Figure 4shows an intermediate position in which it is clearly visible how the strip sections are wound in the form of a double-start spiral on the outer sheath 53 on the winding core 53.

[0053] The two band sections 61, 62 are wound up further by further rotation until the remaining free areas of the band sections 61, 62 are taut as tension strands between the winding core 53 and the slots 56, 57 of the drum 51, as shown in Figure 5 This represents the one stop position, i.e., the end position of the maximum angle of rotation. A steering torque then applied via the steering wheel to the steering shaft 23 acts as a tensile stress on the band sections 61, 62, thereby preventing further rotation.

[0054] Each strip section 61, 62 has a first surface 601 and a second surface 602 configured in the same direction. In one winding direction, the first surface 601 can be brought into contact with the winding core 53, and the second surface 602 can be brought into contact with the winding core in the opposite winding direction. In other words, depending on the winding direction, the first surface 601 or the second surface 602 of the strip section 61, 62 rests against the winding core 53.

[0055] Starting from the neutral position of Figure 3 the steering shaft 23 can also be rotated in the opposite direction. Then the band sections 61, 62 are wound in a direction opposite to the winding direction of the Figures 4 and 5 wound in the opposite direction on the winding core 53. In this case, Figures 4 and 5 mirror-image arrangements. These are shown in the Figures 6 and 7 shown, where Figure 7 the to Figure 5 opposite end stop.

[0056] Figure 6 shows an intermediate position in which it is clearly visible how the band sections 61, 62 are wound in the form of a double spiral on the outer sheath 53 on the winding core 53, whereby the Figure 6 shows the reverse winding direction than Figure 4 .

[0057] The figures show that thanks to the invention a simpler, more compact structure can be realized. List of reference symbols

[0058] 1Steering column 2Actuator unit 21Steering column housing 22Steering tube 23Steering shaft 24Connecting section 3Support unit 31Mounting openings 32Pivot axis 33Side cheeks 34Elongated hole 4Clamping device 41Clamping bolt 42Clamping lever 43Clamping gear 5Revolution limiter 51Drum 52Inner casing 53Winding core 54Outer casing 55Cross slot 56, 57Cross slots 6Band element 61, 62Band sections 63Band section LLongitudinal axis HHeight direction

Claims

1. Steering column (1) for a motor vehicle, which comprises a steering shaft (23) mounted rotatably relative to a steering column housing (21, 51) about its longitudinal axis (L) and, for limiting the rotation of the steering shaft (23), has a rotation limiter (5) which has a winding core (53) connected to the steering shaft (23) in a rotationally fixed manner, to which is attached an elongate strip element (6) which is connected to the steering column housing (51), can be flexibly deformed transversely to its longitudinal extension and has at least one strip section (61, 62) which can be wound onto the winding core (53) in a winding direction about the longitudinal axis (L), the winding direction of the strip section (61, 62) being reversible, characterized in in that at least two tape sections (61, 62) are provided which can be wound on top of one another in at least two directions.

2. Steering column (1) for a motor vehicle, which comprises a steering shaft (23) mounted rotatably relative to a steering column housing (21, 51) about its longitudinal axis (L) and, for limiting the rotation of the steering shaft (23), has a rotation limiter (5) which has a winding core (53) connected to the steering shaft (23) in a rotationally fixed manner, to which is attached an elongate strip element (6) which is connected to the steering column housing (51), can be flexibly deformed transversely to its longitudinal extension and has at least one strip section (61, 62) which can be wound onto the winding core (53) in a winding direction about the longitudinal axis (L), the winding direction of the strip section (61, 62) being reversible, characterized in in that the winding core (53) and / or the steering column housing (51) have at least one transverse slot (55, 56, 57) through which the tape element (6) is guided.

3. Steering column (1) for a motor vehicle, which comprises a steering shaft (23) mounted rotatably relative to a steering column housing (21, 51) about its longitudinal axis (L) and, for limiting the rotation of the steering shaft (23), has a rotation limiter (5) which has a winding core (53) connected to the steering shaft (23) in a rotationally fixed manner, to which is attached an elongate strip element (6) which is connected to the steering column housing (51), can be flexibly deformed transversely to its longitudinal extension and has at least one strip section (61, 62) which can be wound onto the winding core (53) in a winding direction about the longitudinal axis (L), the winding direction of the strip section (61, 62) being reversible, characterized in in that the tape element (6) is designed as a closed loop.

4. Steering column (1) according to claim 1, characterized in that the strip section (61, 62) between the winding core (52) and the steering column housing (51) exerts an equally large restoring torque in both winding directions, irrespective of the winding direction.

5. Steering column (1) according to one of the preceding claims, characterized in that the winding core (53) has an outer casing (54).

6. Steering column (1) according to claim 5, characterized in that the outer casing (54) is surrounded by a hollow-cylindrical inner casing (52) of the steering column housing (51) with radial spacing (A).

7. Steering column (1) according to one of the preceding claims, characterized in that the belt section (61, 62) between the winding core (53) and the steering column housing (51) is designed as a tension strand.

8. Steering column (1) according to one of claims 2 or 3, characterized in that the strip section (61, 62) can be wound on top of each other in at least two directions.

9. Steering column (1) according to one of claims 2 or 3, characterized in that at least two belt sections (61, 62) are provided.

10. Steering column (1) according to one of the preceding claims 1, 3 or 4 to 9, if dependent from one of the claims 1 or 3, characterized in that the winding core (53) and / or the steering column housing (51) have at least one transverse slot (55, 56, 57) through which the tape element (6) is passed.

11. Steering column (1) according to one of the preceding claims 1, 2 or 4 to 9, if dependent from one of the claims 1 or 2, characterized in that the strap element (6) is designed as a closed loop.

12. Steering column (1) according to one of the preceding claims, characterized in that the strip element (6) is formed from a woven fibre fabric.

13. Steering column according to one of the preceding claims, characterized in that the strip element (6) comprises a plastic material and / or a rubber material and / or a glass material and / or a metal material.