EP3857079A1

EP3857079A1 - Bearing device, adjusting device, adjustable steering column, method for producing an adjusting device

Info

Publication number: EP3857079A1
Application number: EP19778491.1A
Authority: EP
Inventors: Sebastian Huber; Arne Schacht; Jean-Pierre Specht
Original assignee: ThyssenKrupp AG; ThyssenKrupp Presta AG
Current assignee: ThyssenKrupp AG; ThyssenKrupp Presta AG
Priority date: 2018-09-28
Filing date: 2019-09-25
Publication date: 2021-08-04
Also published as: CN112771278B; DE102018124143A1; WO2020064796A8; CN112771278A; WO2020064796A1

Abstract

The aim of the invention is to provide a bearing device (202, 209, 211, 213, 400, 600, 700) for an adjustment drive of a steering column, which bearing device provides an improved support of a drive element of the adjustment drive. This aim is achieved, according to the invention, in that the bearing device (202, 209, 211, 213, 400, 600, 700) comprises a first end (220) and a second end (222) opposite the first end. A bearing opening (208) for rotatable support of the drive element of the adjustment drive, starting from the first end (220), extends into the bearing device in order to form a bearing portion (310). A recess (306) is provided which, starting from the second end (222), extends into the bearing device in order to form a support portion (206, 214), said support portion being connected to the bearing portion (310).

Description

Bearing device, adjusting device, adjustable steering column, method for producing an adjusting device

The present invention relates to a storage device for a

Adjustment drive of a steering column.

Furthermore, the present invention relates to an adjusting device for a steering column for a motor vehicle, comprising a drive element which is mounted rotatably about an axis of rotation in a bearing opening of a bearing device, the bearing device in a bearing seat of a

Gearbox housing is received, wherein the bearing device has a support portion which cooperates with the bearing seat such that the support portion is biased.

Furthermore, the present invention relates to an adjustable steering column for a motor vehicle, comprising one with a chassis

Carrier unit which can be connected to a motor vehicle and an actuating unit held on the latter, which rotatably supports a steering spindle, the position of the actuating unit being adjustable relative to the supporting unit, comprising an adjusting device for converting a drive movement into an adjusting movement which can be transmitted to the adjusting unit, the adjusting device being effective with the Carrier unit and the actuator is connected.

Furthermore, the present invention relates to a method for producing an adjusting device for a steering column for a motor vehicle.

Steering columns of the type mentioned at the outset are known which comprise a support unit which can be connected to the chassis of the motor vehicle, for example in the form of console parts, and an actuating unit which is held on this support unit and is adjustable relative to this support unit. The Actuator unit stores a steering spindle, which is used to initiate a

Steering movement from a steering wheel into a steering system for transmitting the steering movement to a steerable wheel.

It is known to design such an adjusting unit with respect to the support unit so as to be adjustable by means of an adjusting device according to the type mentioned at the beginning, in order to determine the position of one held on the steering spindle

To be able to adapt the steering wheel to the respective seating position of a driver of the motor vehicle. It is known to provide an adjustability of the actuating unit in the axial direction with respect to the steering spindle in order to achieve a longitudinal adjustment of the steering column. Furthermore, it is known to enable the height of the steering wheel to be adjusted by pivoting the actuating unit relative to the carrying unit.

Known adjustment devices of the type mentioned at the outset are typically driven by an electric motor, by means of which a comfortable adjustment of the actuating unit relative to the support unit can be achieved and which also enable repeated storage of positions when several drivers operate the motor vehicle.

In the case of electrically adjustable steering columns for motor vehicles, it is necessary to achieve the rotation of the drive element, for example that of a motor shaft of the electric motor, in a translatory adjustment movement in order to adjust the actuating unit relative to the support unit. In other words, it is necessary to convert a rotary movement into a translatory movement. This is usually done by a threaded spindle drive of an adjusting device of the type mentioned, which one on one Motor shaft of the electric motor arranged gear as well as a spindle nut and a spindle.

In one embodiment, the threaded spindle can be driven by the gear wheel or the motor shaft so as to rotate about its threaded spindle axis, in that the thread play is non-rotatably connected to a second gear wheel which engages with the gear wheel of the motor shaft, and engages in the spindle nut which is attached to the carrying unit or alternatively, is fixedly attached to the actuating unit with respect to a rotation about the threaded spindle axis. In the direction of a threaded spindle axis, the threaded spindle is supported on the supporting unit or the actuating unit, and the spindle nut correspondingly on the adjusting unit or alternatively on the supporting unit, so that a rotary drive of the threaded spindle causes an adjusting movement of the spindle nut, the adjusting movement a

Translational adjustment of the support unit and actuating unit relative to each other in the direction of the threaded spindle axis. This

Execution is therefore also referred to as a rotary spindle drive. The gear wheel of the motor shaft can be used, for example, as a worm

Be configured (worm shaft), which engages in a worm wheel with which the threaded spindle is connected in a rotationally fixed manner.

In an alternative embodiment, the threaded spindle is non-rotatably coupled to the support unit or alternatively to the actuating unit with respect to a rotation about its threaded spindle axis

Spindle nut is rotatable, but is fixed in the direction of the threaded spindle axis accordingly on the adjusting unit or alternatively on the support unit. As in the first embodiment, the threaded spindle is supported on the in the direction of the threaded spindle axis Support unit or on the actuator unit, and the spindle nut

Correspondingly on the adjusting unit or on the support unit, so that the threaded spindle can be displaced translationally in the direction of the threaded spindle axis by the spindle nut being driven in rotation by the gear wheel or the motor shaft about the threaded spindle axis. This version is also known as a submersible spindle drive. The

Spindle nut, which is in engagement with the threaded spindle, can be designed on its outside as a worm wheel, in the

Gearing engages the gear wheel of the motor shaft, which is designed as a worm.

An adjusting device of the type mentioned at the outset is known, for example, from DE 10 2017 206 551 A1, in which a worm, which is fastened on a motor shaft, engages in a worm wheel, that is, it engages

Worm gear is formed so that a submerged spindle drive or a rotary spindle drive is driven by a rotation of the motor shaft or the worm, that is to say the rotary movement of the motor shaft is converted into a linear adjustment movement. An acquaintance

The bearing device then comprises a housing cover in which the motor shaft is mounted. A disadvantage of the prior art manifests itself in the fact that when the direction of rotation of the motor shaft or the worm changes, for

Example, if a desired position of the actuating unit is determined iteratively by a vehicle driver by moving the actuating unit back and forth by driving the known adjusting device and repeating this several times, this results in a deflection of the motor shaft by a predetermined one for driving the adjusting device, because advantageous arrangement of the motor shaft and acoustic noise. In other words, the bearing of the motor shaft is disadvantageous. The object of the present invention is to provide a bearing device of the type mentioned, an adjusting device of the type mentioned, an adjustable steering column of the type mentioned and a method of the type mentioned by which the disadvantages of the prior art are avoided.

The task is solved by the characteristics of the independent

Claims 1, 10, 11 and 12. Advantageous further developments result from the respective subclaims.

According to the invention, this object is achieved with respect to the bearing device in that the bearing device has a first end and a second end opposite it, a bearing opening for the rotatable mounting of a drive element of the adjusting drive, which

extending from the first end into the bearing device to form a bearing section, wherein a recess is provided which extends from the second end into the

Bearing device extends into it to form a support section, which is connected to the bearing section. The is preferred

According to the invention, the bearing device is designed as a bearing bush with a preferably round cross section. The is preferably

Cross-section arranged or arranged orthogonal to an axis of rotation of the drive element,

The bearing device according to the invention is particularly advantageous from the point of view that the drive element, for example a

Motor shaft of an electric motor, in particular such a motor shaft with a gear wheel, in particular a worm, against faults, such as on an adjusting device and / or an adjustable steering column, with which the bearing device according to the invention is effective can be or is connected, acting vibrations and / or

Vibrations, and / or such disturbances, which occur when changing the direction of the drive movement, is robustly supported. Because the drive element is thereby preloaded, in particular in the driven state, a deflection of the

Counteracting drive elements provided storage, so that, for example, a predetermined, because optimal engagement of the drive element in a gear element of a spindle drive (rotary spindle drive and / or replacement spindle drive) is maintained in a variety of operating conditions, for example, because a correspondingly large biasing force the said deflection completely or almost completely suppressed. As deflections, which can be counteracted in this way, if the drive element is designed as a shaft, in particular a shaft with a gear wheel, such as a worm, axial and / or radial deflections come into consideration,

preferably axial deflections, ie deflections along the

Longitudinal axis of the shaft, in particular a motor shaft. The biasing force preferably counteracts the axial and / or the radial deflection. In other words, the prestressing force acts in an axial direction and / or in a radial direction with respect to the longitudinal axis of the shaft, that is to say in the direction of the longitudinal axis of the shaft and / or in a direction orthogonal to the longitudinal axis / axis of rotation of the shaft.

The term “driven state” means in particular that the drive element is provided by a drive means, for example one

Electric motor, in particular a servomotor, is driven, that is, in the case of an embodiment as a motor shaft, it carries out a rotary movement about a corresponding shaft axis, that is to say the longitudinal axis of the shaft. In a further advantageous embodiment of the bearing device according to the invention, the bearing section has a bottom section. The base section preferably has a projection, particularly preferably a concentric projection. This is advantageous because the drive element is in contact with the bottom section via the projection in a driven state, after which a correspondingly average friction diameter is reduced, so that the friction between the drive element and the bearing device is reduced. This is particularly advantageous if the bearing device is mounted axially biased against the drive element.

In a further advantageous embodiment of the bearing device according to the invention, the recess is annular.

The recess then preferably surrounds the bearing opening in a ring shape, preferably the recess and the bearing opening are arranged or can be arranged concentrically. The recess is particularly preferably shaped such that the bearing device is in a longitudinal section, for example along an axis of rotation of the

Drive elements that are W-shaped.

In a further advantageous embodiment of the bearing device according to the invention, it has a wall thickness (s), the

Recess has a volume whose value is greater than the cubic wall thickness. The cubic wall thickness is the value of the wall thickness multiplied three times by itself. The wall thickness is preferably a maximum wall thickness or an average wall thickness, and the wall thickness is particularly preferably a minimum wall thickness of the bearing device. In a further advantageous embodiment of the bearing device according to the invention, the support section has at least one projection.

In a further advantageous embodiment of the bearing device according to the invention, the projection of the bearing opening and the

Recess in a projection plane without overlap with each other. In other words: the projected edges of the recess and the bearing opening do not intersect and do not protrude into one another.

In a further advantageous embodiment of the bearing device according to the invention, the bearing section has at least one recess. In a further advantageous embodiment of the bearing device according to the invention, it comprises a plastic.

In a further advantageous embodiment of the bearing device according to the invention, it is a one-piece integral component.

The object is disclosed with respect to the adjustment device mentioned at the outset according to one of the appended claims and / or here

Embodiments is formed. This is advantageous because of a quiet and precise conversion, for example one

Rotary movement of the drive element, in particular in the case of an embodiment as a motor shaft of an electric motor. The drive element is preferably elastically preloaded by the bearing device according to the invention. By doing that

Drive element is mounted elastically biased, for example by a restoring means, in particular a spring element, is advantageously one against a change in shape and / or shape of the

Resilient mounting of the drive element provided so that even in the case of a form and / or

Shape change, the drive element is supported by a bearing force caused by an elastic preload, preferably by a radial and / or axial preload caused by a bearing force. In other words, the drive element is adaptively mounted in a certain range with regard to a change in shape and / or shape of the drive element, so that it is securely mounted for a large number of cases

is guaranteed. In addition, mechanical stresses in the drive element when an increase in spatial

Expansion of the drive element, for example by a

Thermal expansion, reduced or even avoided. With a change in shape and / or shape of the drive element, a change in shape and / or shape due to

Moisture and / or thermal expansion and / or heat shrinkage and / or an elastic / plastic / elastic-plastic deformation and / or abrasion of the drive element is meant.

It is also advantageous if the drive element against a

Deflection of the drive element is resettable and / or counteracted by a restoring means, in particular a spring element, in particular on and / or in a portion of the drive element spaced from the drive means, for example a portion remote from the motor. As deflections, which can be counteracted in this way or which can even be reset, in the case of an embodiment of the drive element as a shaft, in particular a shaft with a gear wheel, such as a worm, axial and / or radial deflections are preferred axial

Deflections, ie deflections along the longitudinal axis of the shaft, in particular a motor shaft. In an advantageous embodiment, the drive movement is designed to be a rotary movement about an imaginary axis of rotation and the bearing device for preloaded mounting of the drive element along the axis of rotation. This is particularly advantageous if the drive element is designed as a shaft, in particular a motor shaft, because then a deviation, in particular a deflection, preferably a translatory deflection, particularly preferably an axial translational deflection, is counteracted by the rotary movement in the axial direction. In particular, the drive element is prestressed by pressure, preferably elastically prestressed. It is even more advantageous if the drive element is preloaded, elastically preloaded or elastically pressure-preloaded by the bearing device according to the invention in such a way that it is pressed (pressed) against the drive means, preferably a servomotor, in the driven state. It is preferably located

Drive element thereafter in an essentially axial pressure state along the axis of rotation. The axis of rotation can also be referred to as the axis of rotation of the drive element.

In a further advantageous embodiment, the bearing section of the bearing device forms a bearing means for the sliding bearing of the

Drive elements, in particular a bearing means designed as a radial bearing for slidingly mounting the drive element. This is advantageous because this measure provides, for example, a rolling element-free radial bearing, in particular a sliding bearing, which can be realized in the case of the drive element being designed as a shaft, a radial deflection by a positive fit with the shaft, preferably a motor shaft of an electric motor , for example, a portion or area of a plain bearing supporting the shaft is as one the shaft there spatially-physically surrounding sleeve and / or socket, so preferably as a hollow cylinder or a bowl with a bottom portion and a blind hole.

In particular, plain bearings experience solid friction,

Fluid friction or a corresponding mixed friction into consideration. As the material (s) for such a slide bearing

Storage device are in particular one or more plastics, but also or alternatively one or more

Ceramics and / or graphite and / or one or more sintered metals. The bearing device is particularly preferably formed from a plastic. In particular, the storage device is an injection molded part.

In an advantageous development, the bearing device can be arranged in a force-fitting manner with respect to the drive element, in particular in a bearing seat of a housing which is at least partially accommodated by the adjusting device, so that the

Drive element additionally and / or in addition due to a

corresponding friction force by the bearing device against a

Deflection from a predetermined position of the drive element is counteracting or at least inhibiting. This is realized primarily by the support section of the bearing device. Thereafter, the bearing device can also be arranged, that is to say, mounted, that is, the bearing seat encompassed by the aforementioned housing, which corresponds to the transmission housing, without further measures for interacting with the drive element. By the

Storage device can be arranged non-positively with respect to the drive element, the drive element is so far also movably mounted, in particular in the case of a configuration of the drive element as Motor shaft. The bearing seat is preferably designed as an opening, particularly preferably as an at least partially circular cylindrical opening or bore.

According to a preferred embodiment, the bearing device is elastically deformable, in particular the support section, so that it can be stored essentially elastically reversibly in the bearing seat mentioned. Thereafter, for example, the bearing device can be preloaded elastically in the radial direction, for example, so that the bearing device in an assembled state by a corresponding force resetting the elastic deformation, for example against a force

Inner wall of a bearing seat provided for assembly is pressed. It is also advantageous that the

Bearing device in the bearing seat in relation to the drive element designed as a motor shaft is self-centering in the radial direction or is designed to be self-centering.

In an alternative embodiment, the storage device is for

Supply of a contact area formed between the bearing device and the drive element is configured with lubricant. According to this, the bearing device preferably has one or more recesses in a section provided for storing the drive element, in particular the bearing section subsequently has the described recess, preferably channel-shaped recesses, in particular one or more grooves or pockets, for storing and / or transporting lubricant on and / or in the contact area, so that the contact area is supplied with lubricant during the execution of the drive movement, which results in low-friction and thus low-maintenance and low-wear operation of the invention

Storage device advantageously results. Then the Bearing section also have so-called lubrication pockets. The lubricant is preferably designed as grease.

In a further advantageous embodiment, the bearing device is mounted such that it can be preloaded against the drive element. This is advantageous because in this way the drive element in the driven state is mounted in a prestressed manner by and / or via the bearing device, so that the drive element is furthermore supported by the bearing device, in particular with low friction, by applying a corresponding pretensioning force. The bearing device is preferably mounted in the axial direction against the drive element designed as a motor shaft, so that it is particularly preferably pressed against an end face of such a shaft on a (remote) section of the motor shaft that is spaced apart from the drive means, in particular a servomotor. The bearing device is preferably mounted such that it can be preloaded elastically, that is to say in the sense of a spring in which the support section is preloaded by joining into the bearing seat.

In a further advantageous embodiment, one is elastic

preloadable clamping means for preloading the bearing device against the drive element. This is advantageous because, on the one hand, a storage suitable for the mounting of the drive element can be provided, and on the other hand, by the clamping means, one for the

Counteract against deflection of the drive element

adapted and thus optimized measure can be provided, namely by an appropriate design of the clamping means.

The tensioning means is preferably in the form of a ring, for example as a prestressing ring or retaining ring, or in the form of a disk, for example as a prestressing disk or holding washer. This is particularly advantageous when the clamping means is to interact with the bearing device. It is also advantageous if the clamping means has at least one

Has bulge. The bulge is particularly effective

advantageously as a spring element by means of which a prestressing force can be exerted on the drive element, for example in the sense of a plate spring. In addition, changes in length of the drive element can be compensated particularly well by means of an elastic deformation of the bulge, in particular in the axial direction if the drive element is designed as a motor shaft. It is particularly advantageous if the bulge contacts or can be arranged contacting the drive element and / or the bearing device with a convex side defined by the shape of the bulge. Alternatively or additionally, the tensioning means can preferably be in the form of a tongue

Projections can be formed or include those that are elastically biased when joining into the bearing seat. In a further advantageous embodiment, the clamping means is designed to be self-locking. This is advantageous because, for example, the clamping means can be arranged in a bearing seat for applying a pretensioning force in a predetermined position without constructive or other measures having to be taken with regard to the bearing seat in order to mount the clamping means there. This is realized, for example, in that the tensioning means transversely to a direction along which the prestressing force is to be applied or can be applied, for example a prestressing force for an axially-elastic pressure state of the drive element in the case of a configuration as a motor shaft,

is non-positively arranged or can be arranged and / or is mechanically anchored or mechanically anchored to the bearing seat due to a surface structure of the clamping means. A mechanical anchoring can be realized in that the clamping device in an assembled state due to a resilient elastic deformation of the clamping means is pressed against a bearing seat, in particular radially, it being particularly advantageous if the clamping means partially penetrates into an inner wall of the bearing seat, for example due to a corresponding choice of material and / or radial prestressing force if the clamping means has a higher hardness (for example according to Vickers) at least in an area provided for assembly in the bearing seat than a corresponding area of the bearing seat. A surface structure of the tensioning means that is particularly well suited for such clawing and / or anchoring is meandering. This embodiment is particularly advantageous from the aspect that the clamping means as a ring or disc

molded and said bearing seat is hollow cylindrical. Alternatively, the clamping means can have radially protruding retaining tongues which are preloaded radially when the clamping means is received in the bearing seat.

In a further advantageous embodiment, the bearing device has a contact section for non-positive contact with a support section provided for mounting the bearing device, at least one projection being provided on an outer circumference of the contact section. This is advantageous because, for example, the bearing device can be arranged in a bearing seat encompassed by a housing, the gear housing, without further measures for interacting with the drive element, that is to say in particular it can be installed.

Furthermore, the bearing device can only be displaced in an axial direction with respect to a deflection of the drive element when a predetermined friction force due to the existing excess is exceeded, in particular if the drive element is a motor shaft an electric motor is configured. The protrusion or the protrusions can in this case in particular by a thread turned in and / or on the outer circumference with one or more thread turns and / or by knurling, in particular in the case of a bearing means designed as a radial bearing, in particular a sliding bearing, a corresponding longitudinal knurling (in the axial direction of the radial bearing) and / or transverse knurling (extending in the circumferential direction of the radial bearing), or be formed by a combination thereof. As an alternative and / or in addition, the projection or the projections can also be shaped like a knob. An advantage of the projections described (thread and / or knurling and / or knob-like) is that the bearing device can be moved, for example, with a constant force, in particular in the axial direction with respect to the

Motor shaft configured drive elements, so that a bearing play can be set via a corresponding force control. Said projections can in particular partially or completely deform elastically, plastically or elastically-plastically in the assembled state of the bearing device. The support section can in particular be designed as a spring bar. A radial biasing force on the drive element can preferably be provided by the projection or the projections. Thanks to the at least one projection, the bearing device is radially preloaded when it is received in the bearing seat, the

Bearing device has an enveloping circle diameter that is larger than the diameter of the bearing seat. Thus, when mounting the bearing device in the bearing seat, the bearing means is preferably preloaded radially, so that the bearing means counteracts a deflection of the drive element in the radial direction. In a further advantageous embodiment of the bearing device according to the invention, the tensioning means exerts a prestressing force on the contact section in a tensioned state. This is advantageous because it reduces a frictional force caused by the prestressing force, in particular in the axial direction, with respect to the drive element, in particular if the drive element is designed as a motor shaft.

In a further advantageous development, it can be provided that the tensioning means cooperates with the support section in such a way that a prestressing force is entered into the bearing device in the radial direction and in the axial direction.

In a further advantageous embodiment, the tensioning means in a tensioned state is a biasing force, preferably a radial and / or axial biasing force, which is exerted on a support section of the bearing device that at least partially accommodates the drive element. This is advantageous because it maximizes the pretensioning force that acts effectively on the drive element.

With regard to the adjustable steering column mentioned at the outset, the object is achieved in that the adjusting device is configured as a component group according to one of the appended claims and / or according to the embodiments disclosed here. This is advantageous because of a

quiet and precise conversion, for example one

Rotary movement of the drive element, in particular in the case of a configuration as a motor shaft of an electric motor, is implemented on the actuating unit, so that the adjusting movement is transmitted to the actuating unit in an improved manner by operating the adjusting device, which increases the overall ease of use of the steering column. With regard to the method mentioned at the outset, the object is achieved in that at least the following steps are carried out: a) providing a drive element which can be driven to carry out the drive movement; b) providing a bearing device for preloaded storage of the drive element according to one of the appended claims and / or embodiments disclosed here; c) providing a gear housing comprising a bearing seat; d) Positioning the drive element relative to the bearing seat and joining the bearing device into the bearing seat, so that the drive element is supported in a preloaded manner by the bearing device. This is advantageous because it results in a

Adjusting device is produced, for example consisting of a motor shaft and a bearing device according to the invention, the drive element, in particular in the case of a configuration as

Motor shaft of an electric motor, against a deflection of the

Drive elements is mounted counteracting, especially in the event that the drive element is in the driven state.

Steps a) and b) can of course be carried out in any order. A force-controlled pretensioning is preferably carried out in step d). In step d), a clamping ring is preferably used for the bearing device to be mounted pretensioned against the drive element by the clamping ring being arranged in the bearing seat in such a way that it exerts an axial pretensioning force on one end of the

Bearing device in the direction of the drive element to exercise.

If the drive element is also preloaded elastically, in

Advantageously, a flexible bearing and / or change in shape of the drive element is produced. Furthermore, this measure provides a bearing which resets a deflection of the drive element.

In step d), the drive element is preferably preloaded along the axis of rotation with respect to the drive movement, which is, for example, a rotational movement about an imaginary axis of rotation, particularly preferably elastically preloaded, more preferably

is prestressed or elastically prestressed. Still

It is more advantageous if the drive element is mounted in a preloaded manner such that it is elastically preloaded or elastically pressure-preloaded in such a way that it is pressed (pressed) against the drive means, preferably a servomotor, in the driven state.

During and / or after step b), the drive element is preferably in an essentially axial pressure state along the axis of rotation. In an advantageous embodiment of the invention

In step b), the bearing device is provided with a bearing device provided for the sliding mounting of the drive element, and the drive element in step d) is provided by the

Storage device stored. After this measure, a

Bearing device in and / or on the drive element, for example if the drive element is a motor shaft of an electric motor

is configured, positioned at an end of the motor shaft spaced from the electric motor, so that the bearing device accommodates a section of the drive element that is to be appropriately supported.

In this case, the bearing device is preferably arranged in a force-fitting manner, so that if a deflection of the

Drive elements is movably supported beyond a predetermined value. In a further advantageous embodiment of the method according to the invention, in step b) the bearing device is provided with an elastically pretensionable tensioning means and in step d) the pretensioning is carried out by tensioning the tensioning means against the bearing device. This is advantageous because an adjusting device is manufactured in such a way that in the bearing seat, which at least partially surrounds the drive element spatially, the bearing device is first positioned on the drive element for storing the drive element and then the clamping means is positioned in the bearing seat, and then, preferably force-controlled, is biased so that the

Bearing device is elastically biased against the drive element.

In a further advantageous embodiment of the method according to the invention, the drive element is driven in step d). This is advantageous because a bearing clearance that is adapted to the driven state of the drive element can advantageously be set. The drive element is preferably driven by an electric motor.

In a further advantageous embodiment of the method according to the invention, the (further) prestressing is ended in step d) when an operating variable of a drive means reaches a predetermined value. The predetermined value of the operating variable can be an electrical current and / or an electrical voltage and / or or act as a braking torque of an electric motor, in particular a servomotor. This advantageously adjusts a bearing clearance that is adapted to the driven state of the drive element. With regard to the adjusting device of the type mentioned at the outset, the object is achieved in that the bearing device is designed according to one of the appended claims and / or the embodiments disclosed here. . The adjustment device thus includes one

bearing device according to the invention and a drive element,

in particular a motor shaft of an electric motor. This advantageously provides an adjustment device with an improved

Storage of the drive element provided. The adjusting device according to the invention preferably comprises one or more rolling elements, the rolling element or elements being arranged between the bearing section and the drive element. The rolling elements are thus at least partially arranged within the bearing opening. The rolling elements are preferably accommodated in a cage. The rolling elements are preferably designed as needles or as cylindrical rollers. Alternatively, balls can also be used as rolling elements.

The invention is described in a preferred embodiment

Described by way of example with reference to a drawing, wherein further advantageous details can be found in the figures of the drawing.

Functionally identical parts are provided with the same reference numerals.

The figures in the drawing show in detail:

Figure 1 is a schematic perspective view of a

steering column according to the invention;

Figure 2: the steering column of Figure 1 in a schematic

perspective side view; Figure 3: the steering column of Figure 1 in a further schematic perspective side view;

Figure 4: an adjustment device according to the invention

Steering column according to the invention according to Figures 1 to 3; Figure 5: the adjustment device according to Figure 4 in a partial

Exploded view;

Figure 6: the adjustment device according to Figure 4 in a partial

interrupted view;

7 shows a cross section through the adjusting device according to FIG. 4; Figure 8: a storage device according to the invention in a

perspective representation after a first

Embodiment of the plain bearing;

Figure 9: the bearing device according to Figure 8 in plan view from the front as shown in Figure 8; FIG. 10: a cross section through the bearing device according to FIG. 8;

Figure 11: a cross section through an inventive

Storage device in a second embodiment;

Figure 12: a storage device according to the invention in a

perspective view in a third embodiment; FIG. 13: a cross section through the bearing device according to FIG. 12;

Figure 14: a cross section through an inventive

Adjustment device of the steering column according to the invention Figures 1 to 3 in one of the invention

Bearing device is mounted according to a further embodiment;

Figure 15: a cross section through an inventive

Bearing device according to a fourth embodiment;

Figure 16 shows a cross section through an inventive

Bearing device according to a fifth embodiment;

Figure 17: a cross section through an inventive

Storage device according to a sixth embodiment.

Figure 1 shows a steering column 1 according to the invention in a schematic perspective view from top right obliquely to the rear end, based on the direction of travel of a vehicle, not shown, where a steering wheel, not shown here, is held in the operating area. Figures 2 and 3 show the steering column 1 according to the invention in

different perspective side views.

The steering column 1 according to the invention comprises a support unit 100, which is designed as a console, which has fastening means 102 in the form of fastening bores for attachment to one

shown vehicle body. An actuating unit 16 is held by the support unit 100 and is also in a jacket unit 104

Guide box or box rocker called - is included.

The actuating unit 16 has a casing tube 12 in which a

Steering spindle 14 is rotatably mounted about a longitudinal axis L which extends axially in the longitudinal direction, ie in the direction of the longitudinal axis L. At the rear end, there is a fastening section 141 on the steering spindle 14 formed on which a steering wheel, not shown, can be attached. At the front end, the steering shaft 14 with a fork

Universal joint 35 connected by torque.

The actuating unit 16 is telescopic in order to implement a longitudinal adjustment in the jacket unit 104 in the direction of the longitudinal axis L.

slidably received in order to be able to position the steering wheel connected to the steering spindle 14 in the longitudinal direction back and forth relative to the support unit 100, as with the double arrow Y parallel to

Longitudinal axis L indicated. The jacket unit 104 is mounted in its front end region about a horizontal pivot axis 106 lying transversely to the longitudinal axis L in a pivot bearing 22 on the support unit 100. In the rear area, the jacket unit 104 is connected to the support unit 100 via a rotatable adjusting lever 181. By rotating the

Adjusting lever 181 by means of an illustrated adjusting device 2 ′ according to the invention (see side views of FIGS. 2 and 3)

The jacket unit 104 can be pivoted relative to the support unit 100 about the pivot axis 106 lying horizontally in the installed state, as a result of which a steering wheel attached to the fastening section 141 can be adjusted in the height direction Z, which is indicated by the double arrow Z.

A first adjustment device 2 according to the invention for longitudinal adjustment of the actuating unit 16 relative to the jacket unit 104 in the direction of the

Longitudinal axis L has a spindle drive with a spindle nut 51 with an internal thread, in which a threaded spindle 4 engages along the threaded spindle axis, that is, with its external thread, is screwed into the corresponding internal thread of the spindle nut 51. The threaded spindle axis of the threaded spindle 4 runs essentially parallel to the longitudinal axis L.

The spindle nut 51 is rotatably mounted about the threaded spindle axis in a gear in a gear housing 34 which is fixedly connected to the casing unit 104. In the direction of the threaded spindle axis, which is also referred to in the following as the gear axis, the spindle nut 51 is supported axially via the gear housing 34 on the jacket unit 104, as will be explained in more detail below.

The threaded spindle 4 is connected to a fastening element 54 formed at its rear end via a transmission element 120 with the actuating unit 16, specifically in the direction of FIG

Threaded spindle axis or the longitudinal axis L and fixed with respect to a rotation about the threaded spindle axis. By the rotatably drivable spindle nut 51 and the rotation

fixed threaded spindle 4, a so-called sub-spindle drive is realized.

The transmission element 120 extends from the actuating unit 16 through a slot-shaped passage opening 110 in the casing unit 104. To adjust the steering column 1 according to the invention in the longitudinal direction, the transmission element 120 can be freely moved in the passage opening 110 in the longitudinal direction.

The adjusting device 2 according to the invention has an electric servomotor 20, of which the spindle nut 51 with respect to the

The threaded spindle axis can be driven to rotate relative to the threaded spindle 4 which is fixed in the direction of rotation. This can - depending on

Direction of rotation of the servomotor 20 - the threaded spindle 4 are displaced translationally relative to the spindle nut 51, so that the with the threaded spindle 4 connected adjusting device 16 is adjusted relative to the jacket unit 104 connected to the spindle nut 51 in the direction of the longitudinal axis L.

In Figures 2 and 3 it is particularly easy to see how the second

Adjustment device 2 'according to the invention for adjustment in

Height direction Z is attached to the steering column 1 according to the invention. This adjusting device 2 'according to the invention comprises one

Spindle nut 3 ’, in the internal thread along one

Threaded spindle axis engages a threaded spindle 4 '. The

Adjustment device 2 'according to the invention has a gear in which the threaded spindle 4' in a gear housing 34 ', which is fastened to the casing unit 104, by a corresponding one

Threaded spindle axis, rotatably and axially, in the direction of

Threaded spindle axis, is supported on the jacket unit 104. The threaded spindle 4 ″ can be driven to rotate in both directions of rotation about the threaded spindle axis by an electric servomotor 20 ″.

The spindle nut 3 ’is about a rotation about

The threaded spindle axis is fixedly attached to one end of the two-armed actuating lever 181, which is mounted on the support unit 100 so as to be rotatable about a pivoting mechanism 18 about a hinge axis 183, and the other arm of which is connected to the jacket unit 104 at the other end. The spindle nut 3 'is connected to an actuating lever 181 via a joint 182. The adjusting lever 181 is pivotable in a hinge axis 183 on the jacket unit 104 and in one

Joint axis 184 attached to the support unit 100. This ensures that a corresponding adjustment is applied to the pivoting mechanism 18 and thus to the actuating unit 16 and the casing unit 104 via the threaded spindle 4 '. For a required Length compensation is appropriate in one of the joints

Compensation function integrated. In the example, this is by a

Elongated hole recording of a bolt forming the pivot axis 106 is realized in the pivot bearing 22. By rotating the threaded spindle 4 ″ - depending on the direction of rotation of the servomotor 20 ″ - the spindle nut 3 ’in the direction of

Threaded spindle axis are displaced translationally relative to the threaded spindle 4 ″, so that accordingly the jacket unit 104 connected to the spindle nut 3 ″ via the actuating lever 181 together with the actuating unit 16 accommodated therein relative to the support unit 100 in

Height direction Z can be adjusted up or down, as with the

Double arrow Z indicated, namely the actuator 16 and the

Sheath unit 104 can be pivoted about pivot axis 106 relative to support unit 100. A so-called rotating spindle drive is realized by the rotating spindle 4 ’and the spindle nut 3’, which is fixed with respect to rotation.

The spindles 4 and 4 'each have a mechanical end stop 5 to ensure a predefined adjustment range.

The adjustment devices 2 and 2 'according to the invention essentially differ only in that the transmission housing 34

Spindle nut 51 is rotatably mounted in the axial direction, and in the gear housing 34 ″ the threaded spindle 4 ″ is rotatably mounted in the axial direction about the corresponding threaded spindle axis.

The features of the adjusting device 2, which is designed as a replacement spindle drive according to the invention and a bearing device according to the invention, are explained below with reference to FIGS. 4 to 14, the features relating to the configuration of the rotary spindle drive trained adjusting device 2 'can be transmitted according to the invention in that instead of the spindle nut 51

Threaded spindle 4 is arranged to be driven in rotation.

FIG. 4 shows the adjusting device 2 according to the invention in a state detached from the steering column 1 according to the invention. In FIG. 5, functional parts of a bearing device according to the invention, which are essential to the invention, are shown in an exploded view.

The arrangement and function of those explained in more detail below

Individual parts of the storage device according to the invention can from

Representations in the figures in 6 and 7 can be taken.

The adjusting device 2 according to the invention has a housing 921. The housing has a bearing seat 200, in which a drive wheel designed as a worm 922 is rotatably mounted, which is on a

Drive shaft 923 (cf. in particular the cross-sectional illustration in FIG. 7) is fastened. The screw 922 is preferably by means of a

Cross-dressing attached to the drive shaft 923. This offers the advantage that there are no high press-on forces as with one

Longitudinal bandage are required. The screw 922 is preferably inductively heated prior to a joining operation for joining with the drive shaft 923 and then with little force being exerted on the

Drive shaft 923 pushed on, so that worm 922 shrinks on drive shaft 923 after cooling. Alternatively, the worm 922 can also be attached to the

Drive shaft 923 are attached, whereby heat input into the screw can be avoided, for example, to avoid starting the material. The drive shaft 923 is of that

Actuator 20 can be driven in rotation, the motor shaft of which

Can form drive shaft 923 or at least with torque this is coupled. The servomotor 20 is on the housing 921

flanged and connected to it, the drive shaft 923 at its end remote from the motor in a slide bearing

Bearing device 202 is rotatably mounted in the bearing seat 200, and in its area close to the motor in a motor bearing 925, which is also fixed in the housing 921 together with the servomotor 20. The

Bearing device 202 is pressed elastically against the drive shaft 923 by a clamping ring 201, so that the drive shaft 923 is elastically pressure-preloaded in the axial direction and at the same time is radially slidably supported at its end remote from the motor by the bearing device 202, in particular if the drive shaft 923 is driven by the servomotor 20 . The drive shaft 923 has an axis of rotation, the axial

Direction is synonymous with the direction of the axis of rotation.

Bearing device 202 comprises a first end 220 and a second end 222 opposite this, a bearing opening 208 which rotatably supports the drive shaft 923 of the adjustment drive and which extends from the first end 220 into the bearing device 202 to form a bearing section 310, one of which Recess 306 is provided, which extends from the second end 222 into the bearing device to form a support section 206, 214, which is connected to the bearing section 310.

The bearing device 202 has one at the second end 222

Bottom section 311. Furthermore, the bearing device 202 has an annular recess 306. As can be seen in particular from FIG. 7, the drive shaft 923, the worm 922, the bearing device 202 and the clamping ring 201 are in a bearing seat 200 of the housing 921 in the axial direction

Drive shaft 923 arranged, the drive shaft 923 rotatable about an axis of rotation X is mounted. The bearing device 202 forms a bearing device according to the invention. The bearing device 202, the clamping ring 201 and the drive shaft 293 form a component group. The clamping ring 921 is supported against a wall 203 of the

Bearing seat 200, with respect to the axial direction of the

Drive shaft 923, that is along the longitudinal axis of the drive shaft, is elastically biased in the radial direction such that the

Tension ring 201 partially penetrates into wall 203. Speak the

Tension ring 201 is immovably mounted in the bearing seat 200 with respect to a displacement in the axial direction, in particular against a deflection of the bearing device 202 and thus the motor shaft 923 in the direction of the tension ring 201 up to a predetermined axial force. In order to be able to apply a specific pretensioning force through the tension ring 201 to the bearing device 202 and thus to the drive shaft 923 through the tension ring 201, the tension ring 201 is moved axially toward the drive shaft 923 when the tension ring 201 is mounted in the bearing seat 200 by the tension force increase in the sense of a preloaded spring, or vice versa axially spaced from the drive shaft 923 to reduce the preload force. By the drive shaft 923 in its remote end in the

Bearing device 202 is mounted, the drive shaft 923 in the radial direction by a through the bearing device 203 with the

Drive shaft 923 formed positive locking against a radial deflection of the drive shaft 923. In other words, the bearing device 202 acts as a radial fixing means with respect to the drive shaft 923

Bearing device 202 is mounted in the bearing seat 203 in a radially elastically prestressed manner with respect to the longitudinal axis of the drive shaft 923 by the support section 206, that is to say non-positively, so that due to a corresponding resetting of an elastic deformation in radial direction Direction, i.e. in a direction orthogonal to the axis of rotation of the drive shaft 923, is supported against the wall 203 and is movably supported in the axial direction by an axial force dependent on the elastic stress state, i.e. a force overcoming a corresponding frictional force, for example in the event of thermal expansion of the drive shaft 923 in the axial direction. It can be seen particularly well in FIG. 7 that the bearing device 202 has a bearing section 310 in which a section of the drive shaft 923 is received. Furthermore, it can be seen particularly well from FIG. 7 that the bearing device is W-shaped due to the recess 306. The described mounting of the end of the drive shaft 923 remote from the motor in the clamping ring 201 designed as a clamping disk, which is located in a

preloaded state, bearing device 202 pressed against the drive shaft 923, the drive shaft 923 and the

Bearing device 202 are mounted elastically biased, is produced as follows (see in particular the partial exploded view of Figure 5): the bearing device 202 is inserted in the bearing seat 200 in the radial direction elastically biased in the axial direction until the bearing device 202 for receiving the end remote from the engine

Drive shaft 923 contacts them there, then the clamping ring 201 is inserted in the bearing seat 200 in the radial direction, elastically prestressed in the axial direction, until the clamping ring 201, in particular in FIG. 7, bulges out in the axial direction with respect to the drive shaft 923 (bulge) Bearing device 202 contacted, here contacted the bottom portion 311 of the bearing portion through which the described positive connection with the drive shaft 923 is provided. Depending on the preload force by the clamping ring 201 in the Bearing seat 200 on the bearing device 202 and thus the drive shaft 923 is to be exerted by the clamping ring 201 due to its elastically deformed state, the clamping ring 201 is closer (higher clamping force) or further away (lower clamping force) with respect to the far end of the drive shaft 923 in the bearing seat 200

arranged. In this case, the drive shaft 923 can be driven by the servomotor 20, that is to say execute a rotary movement about its corresponding shaft axis (longitudinal axis). The person skilled in the art is aware of the elastic springback of the tensioning ring 202 when it is relieved, that is to say when the prestressing process described is ended, which can be taken into account in the production of the bearing described.

As can be seen in particular from FIG. 7, the housing 34 of the adjusting device 2 is tubular, hollow-cylindrical, coaxial with the

Threaded spindle 4 formed. In the housing 34 is a

Worm gear 912 designed gear wheel rotatably mounted. The worm wheel 912 is non-rotatably connected to the spindle nut 51 via a cylindrical connecting element 204. Through an engagement of a worm thread of the worm 922 in the worm wheel 912, the latter is rotated by the drive shaft 923 in the event of a corresponding operating state of the servomotor 20

Threaded spindle axis of the spindle 4 driven and the corresponding rotary movement via the connecting element 204 on the

Transfer spindle nut 205. Housing 34 includes one

Connection section 341 for coupling to a steering column 1. The connection section 341 is designed as an outwardly curved projection which is introduced into the housing 34 by means of a reshaping operation. The connection section 341 can be a buffer element made of a plastic or an elastomer, which is designed as a cap such as rubber, this being used for cushioning between the

Adjustment device 2 and the steering column 1 is used.

The servomotor 20 can be connected to the housing 921 by means of a press fit and additionally securing and fastening to a motor shield by means of deformed plastic pins or plastic bolts, which are formed by means of hot caulking, hot caulking,

Ultrasonic forming, laser-assisted forming or the like are generated to additional components, such as screws or rivets in the corresponding assembly of the servomotor 20 on the

Avoid housing 921.

It can also be seen from FIG. 7 that the bearing device 202 has a support section 206, via which the bearing device 202 is mounted in the bearing seat 200 in a radially preloaded manner. The support section 206 is connected to the bearing section 310, the support section 206 being elastically prestressable thanks to the recess 306.

Figures 8 and 9 show the slide bearing

Storage device in perspective view or in plan view. On a surface 207 of the bearing device 202, that is to say the surface which, in the assembled state of the bearing device 202, faces the wall 203 of the bearing seat, the bearing device 202 has pressing ribs 205, that is to say projections, so that the bearing device 202 is supported by an elastic or elastic plastic deformation of the press ribs 205 is introduced into the bearing seat 200 by applying a relatively constant displacement force and is thereby mounted. Is the drive shaft 923 during assembly of the clamping ring 201 in the bearing seat 200 by the

Actuator 20 driven, due to the constant displacement force of the bearing device 202 given by the pressing ribs 205 in relation to the wall 203, a prestressing of the clamping ring 201, that is to say a displacement of the clamping ring 201 against the bearing device 203, so that it is pressed against the drive shaft 203 at the end remote from the motor, at a predetermined clamping force and thus by a

Corresponding, so-called delta force shutdown of the servomotor 20 can be realized. The press ribs 205 are oriented in the assembled state of the bearing device 202 along the longitudinal axis (axis of rotation) of the drive shaft 923, that is to say axially. 7 and 8, it can be seen that the bearing section 310

extending from a first end 220 of the bearing device 202 in the direction of the second end 222.

It can be seen from the sectional view according to FIG. 10 that the

Bearing device 202 has a radially encircling contact section 206 formed as a spring bar, which in turn has surface 207. In other words, the bearing device 202 is pressed against the wall 203 in the assembled state, in particular by a resilient elastic deformation. The contact section 206 can also be referred to as a support section 206.

A bearing opening 208 of the bearing device 203 can also be seen from FIGS. 8 and 9 and in particular the sectional view according to FIG

Drive shaft 923 is pressed to fix it axially, enclosing it spatially and physically at the end remote from the motor in the sense of a sleeve. By the contact area 206 as a cantilever or as a collar

10, the elastic deformation 206 is localized in the described assembled state of the bearing device (see in particular FIG. 7) so that the Bearing opening 208 experiences almost no radial elastic deformation, which has a positive effect on low-friction mounting of the drive shaft 923 in the bearing opening 208. In other words, the bearing opening 208 is mechanically decoupled from the contact section 206 under a load in the radial direction. The bearing opening 208 can be cup-shaped or cup-shaped. The drive shaft 923 preferably has a clearance fit with the bearing opening 208, so that the drive shaft 923 is relative to the bearing opening 208

can rotate easily, but can be supported with sufficient rigidity in the radial direction on the bearing opening 208. It can be seen from FIG. 10 that the bearing device 202 has a wall thickness s in the region of the base section 311, this wall thickness s being the smallest wall thickness of the bearing device 202.

The bearing opening 208 can alternatively also have a through opening.

11 shows a bearing device 209 of a further bearing device according to the invention, which, in contrast to the bearing device 203, has recesses 210 arranged radially in the bearing opening 208 for storing and / or transporting lubricant, so that in FIG

apparent assembled state of the bearing device 202, which can be transferred to the bearing device 209, the drive shaft 923 is supplied with lubricant when it comes into contact with the bearing opening 208 or the bearing section 310. FIGS. 12 and 13 show a bearing device 211 of a further bearing device according to the invention. The storage device 211 is configured analogously to the storage device 203, except that the surface 207 has projections formed by a thread 212.

Corresponding thread turns run in the tangential direction or transversely to the longitudinal axis of the drive shaft 923, in a state of the bearing device 211 which is mounted analogously to FIG. 7

Bearing device 211 can be easily and comfortably inserted into the bearing seat by means of a rotary movement.

FIG. 14 shows a cross section through the adjusting device 2, one bearing device according to the invention according to another

Embodiment can be seen. The storage device according to this

Embodiment has a bearing device 213 as a bearing means. The bearing device 213 is shaped in such a way that the clamping ring 201 contacts a contact section 214 designed as a spring bar. As a result, the bearing device 213 is pressed even more against the wall 203 compared to, for example, the sliding bearing 202, so that the bearing device 213 can only be displaced along the longitudinal axis of the drive shaft 923 from a correspondingly higher axial force. Furthermore, a higher radial preload of the bearing device 213 can be provided in this embodiment.

FIG. 15 shows a cross section through a bearing device 400 of a further bearing device according to the invention. The bearing device 400 is configured analogously to the bearing device 202, except that it has a projection 312 which projects into the bearing opening 208. In an assembled state, the storage device 400 can thereafter

Contact the drive shaft 923 via the projection 312 in the direction of the axis of rotation X.

FIG. 16 shows a cross section through a bearing device 400 of a further bearing device according to the invention. The bearing device 400 is configured analogously to the bearing device 202, except that it has cylindrical rolling elements 500, the rolling elements 500 being arranged in the bearing opening 208, so that the drive shaft 923 is mounted in the bearing section 310 via the rolling elements 500. FIG. 17 shows a cross section through a bearing device 700 of a further bearing device according to the invention. The bearing device 400 is configured analogously to the bearing device 202, except that it has the projection 312 and the rolling elements 500.

Claims

PATENT CLAIMS

1. Storage device (202, 209, 211, 213, 400, 600, 700) for one

Adjustment drive of a steering column, comprising a first end (220) and a second end (222) opposite this, a bearing opening (208) for rotatably mounting a drive element of the adjustment drive, which extends from the first end (220) into the bearing device for formation one

Bearing section (310), wherein a recess (306) is provided, which extends from the second end (222) into the

Bearing device extends into it to form a support section

(206, 214), which is connected to the bearing section (310).

2. Storage device according to claim 1, characterized in that the bearing section (310) has a bottom section (311).

3. Storage device according to one of the preceding claims,

characterized in that the recess (306) is annular.

4. Storage device according to one of the preceding claims,

characterized in that the bearing device has a wall thickness (s), the recess (306) having a volume whose value is greater than the cubic wall thickness.

5. Storage device according to one of the preceding claims,

characterized in that the support section (206) has at least one projection (205, 212).

6. Storage device according to one of the preceding claims,

characterized in that the projection of the bearing opening (208) and the recess (306) in a projection plane

are free from each other.

7. Storage device according to one of the preceding claims,

characterized in that the bearing section (310) has at least one recess (210).

8. Storage device according to one of the preceding claims,

characterized in that the bearing device comprises a plastic.

9. Storage device according to one of the preceding claims,

characterized in that the bearing device is a one-piece integral component.

10. Adjusting device (2, 2 ') for a steering column for a motor vehicle, comprising a drive element (923) which is rotatably mounted about a rotation axis (X) in a bearing opening (208) of a bearing device (202, 209, 211, 213) , wherein the bearing device (202, 209, 211, 213) is received in a bearing seat (200) of a transmission housing (34, 34 '), the bearing device having a support section (206) which interacts with the bearing seat (200) in such a way, that the support section (206) is biased, thereby

g e k e n n z e i c h n e t, that the bearing device (202, 209, 211, 213) is designed according to one of claims 1 to 9.

11. Adjustable steering column (1) for a motor vehicle, comprising a support unit (100) which can be connected to a chassis of a motor vehicle and an actuating unit (16) held thereon which has a

Steering spindle (14) rotatably mounted, the position of the actuating unit (16) relative to the support unit (100) being adjustable, comprising a Adjusting device (2, 2 ') for converting a drive movement into an adjusting movement which can be transmitted to the adjusting unit (16), the adjusting device (2, 2') being effectively connected to the carrying unit (100) and the adjusting unit (16), thereby

characterized in that the adjusting device (2, 2 ') according to

Claim 10 is formed.

12. A method for producing an adjusting device (2, 2 ') for a steering column for a motor vehicle, thereby

characterized in that at least the following steps are carried out: a) providing a drive element (923) which can be driven to carry out the drive movement; b) providing a storage device (202, 209, 211, 213) according to one of claims 1 to 9; c) providing a gear housing (34, 34 ') comprising a bearing seat (200) d) positioning the drive element (923) relative to the

Bearing seat (200) and join the bearing device (201, 202, 209, 211, 213, 400, 600, 700) into the bearing seat (200) so that the drive element (923) is preloaded by the bearing device (201, 202, 209, 211, 213) is stored.

13. The method according to claim 12, characterized in that in step d) the drive element (923) is driven.

14. The method according to any one of claims 12 or 13, characterized

characterized in that step d) is ended when a Operating size of a drive means (20, 20 ') reaches a predetermined value.