DE102014101995A1 - Steering column for a motor vehicle and spindle nut - Google Patents

Steering column for a motor vehicle and spindle nut

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Publication number
DE102014101995A1
DE102014101995A1 DE102014101995.4A DE102014101995A DE102014101995A1 DE 102014101995 A1 DE102014101995 A1 DE 102014101995A1 DE 102014101995 A DE102014101995 A DE 102014101995A DE 102014101995 A1 DE102014101995 A1 DE 102014101995A1
Authority
DE
Germany
Prior art keywords
part
toothing
spindle nut
threaded
steering
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
DE102014101995.4A
Other languages
German (de)
Inventor
Robert Galehr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Presta AG
Original Assignee
ThyssenKrupp Presta AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ThyssenKrupp Presta AG filed Critical ThyssenKrupp Presta AG
Priority to DE102014101995.4A priority Critical patent/DE102014101995A1/en
Publication of DE102014101995A1 publication Critical patent/DE102014101995A1/en
Application status is Ceased legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D1/00Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/16Steering columns
    • B62D1/18Steering columns yieldable or adjustable, e.g. tiltable
    • B62D1/181Steering columns yieldable or adjustable, e.g. tiltable with power actuated adjustment, e.g. with position memory
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H25/00Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20Screw mechanisms
    • F16H25/24Elements essential to such mechanisms, e.g. screws, nuts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H55/00Elements with teeth or friction surfaces for conveying motion; Worms; Pulleys; Sheaves
    • F16H55/02Toothed members; Worms
    • F16H55/22Toothed members; Worms for transmissions with crossing shafts, especially worms, worm-gears

Abstract

The present invention relates to a steering column (1) for a motor vehicle, comprising a support unit (10, 104) which can be connected to the chassis of the motor vehicle and an actuating unit (10, 104) which is held on this support unit (10, 104) and can be adjusted relative to the support unit (10, 104). 16), which supports a steering spindle (14) for transmitting a steering torque from a steering wheel to a steerable wheel, wherein the actuating unit (16) relative to the support unit (10, 104) via an adjustment (2, 2 ') is adjustable, which is a Threaded rod (26, 26 ') which is in engagement with a female thread (32) having a spindle nut (3) and further comprising a drive motor (20) which acts on an outer toothing (30) of the spindle nut (3) the spindle nut (3) is formed in at least two parts, wherein a toothing part (300) carries the external toothing (30) of the spindle nut (3) and a threaded part (320) the internal thread (32) of the spindle nut (3), and V toothing part (300) and threaded part (320) are firmly connected.

Description

  • Technical area
  • The present invention relates to a steering column for a motor vehicle, in which an adjusting unit relative to a support unit connectable to the motor vehicle by means of an adjustment is adjustable, and a spindle nut for such a steering column.
  • State of the art
  • Steering columns for motor vehicles are known, which comprise a connectable to the chassis of the motor vehicle support unit, for example in the form of console parts, and a held on this support unit and adjustable relative to this support unit actuating unit. The actuator supports a steering shaft, which serves to initiate a steering movement of a steering wheel in a steering system for transmitting the steering movement to a steerable wheel.
  • It is known to design such an adjusting unit relative to the support unit by means of an adjusting adjustable to adjust the position of a held on the steering shaft steering wheel to the respective seating position of a driver of the motor vehicle. It is known to provide an adjustability of the actuator in the axial direction with respect to the steering shaft in order to achieve a longitudinal adjustment of the steering column. Furthermore, it is known to enable a height adjustment of the steering wheel by pivoting the actuator relative to the support unit.
  • Known adjustment drives include electric motors, by means of which a comfortable adjustment of the setting unit relative to the support unit can be achieved and which also allow the repeated approach pre-stored positions when multiple drivers operate the motor vehicle.
  • In electrically adjustable steering columns for motor vehicles, it is necessary to achieve the rotation of an output shaft of an electric motor in a translational adjustment for adjusting the actuator relative to the support unit. This is usually done by a threaded rod drive, which comprises a arranged on the output of the electric motor worm shaft and a spindle nut which is formed on its outer side as a worm wheel, engages in the toothing of which arranged on the output shaft of the electric motor worm shaft. By rotation of the stationary spindle nut, the threaded rod is moved axially.
  • From the AT 511962 A4 is known a steering column for a motor vehicle, in which both a displacement of the steering shaft and a pivoting of the steering shaft relative to a support unit can be made to achieve a corresponding positioning of the steering wheel held on the steering wheel. Both adjustment movements, so both the displacement and the pivoting, are achieved via a respective spindle drive. The spindle drives each comprise a threaded rod, which is held by a spindle nut on one of the two mutually adjustable units. The spindle nut is mounted stationary and can be rotated via a drive motor with a worm shaft, which acts on an external toothing of the spindle nut to achieve via an internal thread which engages with the threaded rod, according to a translational movement of the threaded rod with respect to the spindle nut in the direction of the threaded spindle axis , By the translational movement of the threaded rod, the adjustment of the actuator is effected.
  • There are high requirements for such an electrical adjustment system in a steering column, in particular with respect to the wear behavior and the acoustic properties. In particular, it should be avoided that vibrations which are registered by the driving operation in the steering system and in particular in the steering column, lead to rattling noises or other acoustic impairments, which could be perceived by vehicle occupants as disturbing.
  • Presentation of the invention
  • Starting from the known prior art, it is an object of the present invention to provide a steering column for a motor vehicle and a spindle nut for such a steering column, which allows a quiet and low-vibration operation.
  • This object is achieved by a steering column with the features of claim 1. Advantageous developments emerge from the subclaims.
  • Accordingly, a steering column for a motor vehicle is proposed which comprises a connectable to the chassis of the motor vehicle support unit and a control unit held thereon, which supports a steering shaft for transmitting a steering torque from a steering wheel to a steerable wheel, wherein the actuating unit relative to the support unit via a Adjusting drive is adjustable, which has a threaded rod which is in engagement with an internally threaded spindle nut, and which further comprises a drive motor has, which acts on an external toothing of the spindle nut. According to the invention the spindle nut is formed at least in two parts, wherein a first part is formed as a toothed part, which has the outer toothing of the spindle nut and a second part is formed as a threaded part having the internal thread of the spindle nut, wherein the toothing part and the threaded part are firmly connected. Advantageously, the toothing part and the threaded part are inseparably connected to each other, which means that they can not be separated without damaging at least one of the two parts. This compound can be formed for example by gluing, pressing or welding.
  • Preferably, the steering spindle can transmit the steering movement of the steering wheel with the interposition of a steering gear and especially with the use of an auxiliary power assistance on the steerable wheel.
  • But it is also possible that the steering movement of the steering shaft is sensed, for example electrically, electronically or magnetically, and the sampled signals are fed into a controller which performs a device pivoting of the steerable wheel to illustrate the steering movement. Such systems are known as steer-by-wire.
  • Characterized in that the spindle nut is formed at least in two parts, wherein a threaded part, the internal thread and a toothed part comprises the external teeth, and the toothing part and the threaded part fixed or even permanently connected to each other, the spindle nut can be flexibly adapted to the respective requirements and corresponding to a quiet and vibration-free operation. Due to the two-part structure of the spindle nut, it can be constructed correspondingly with a higher degree of design freedom, so that the threaded portion having the internal thread can be adapted to the respective requirements in connection with the threaded rod, and the external toothing bearing toothing part to the respective requirements in connection can be adapted with the drive provided via the drive motor. Due to the fixed or even non-detachable connection between the toothing part and the threaded part, a spindle nut designed in this way can nevertheless be installed in conventional steering columns without having to change anything in the original structure of the steering column. In other words, a spindle nut formed in this way can replace a conventional one-piece spindle nut.
  • A particularly preferred adaptation of the threaded part with the internal thread to the requirements with respect to the threaded rod and the toothing part with the external toothing to the corresponding drive of the drive motor can be achieved in that the threaded part and the toothing part comprise mutually different materials and in particular completely consist of mutually different materials , Accordingly, the acoustic behavior, the elastic behavior, the damping behavior and / or the wear behavior can be optimized as required. In this context, it should be noted that the threaded part with the internal thread is a screw thread, preferably a movement thread, preferably a trapezoidal thread, which engages with the threaded rod usually formed of a metallic material. The external toothing of the toothing part, however, is typically designed as a worm wheel which engages with a worm shaft connected to the output shaft of the drive motor. Accordingly, both the toothing part and the threaded part can be optimized with respect to the respective requirements and particularly preferably the choice of material of the threaded part and the toothing part are adapted to the respective choice of material of threaded rod and worm shaft.
  • Preferably, the toothed part comprises non-fiber-reinforced plastics and is particularly preferably entirely of a non-fiber-reinforced plastic such as POM, POM homopolymer DELRIN NC © 100 010 and / or 100 AL © DELRIN NC 010th
  • Preferably, the threaded part comprises a fiber-reinforced plastic and particularly preferably consists entirely of a fiber-reinforced plastic such as POM CF 10, POM with carbon fiber and / or PBT with carbon fiber. Accordingly, the threaded part and the toothing part on different materials (= materials).
  • The materials which are used for the toothing part and / or the threaded part may also particularly preferably comprise a sliding additive in order to allow substantially maintenance-free operation over the entire service life of the spindle nut, which over the lifetime of the spindle nut is substantially constant tribological Features.
  • Through the use of plastics, it is possible to produce both the threaded part and the toothing part with different materials in each case the same tool. In this way it is possible to use different combinations cost for materials for the threaded portion and the toothing part, and then combine them depending on the application in a simple manner.
  • It is also a combination of metallic and non-metallic materials for the toothing part and the threaded part possible, which can be designed according to the desired properties of the spindle nut accordingly. In this case, at least one of the parts can also be formed as an insert-molded part.
  • A preferred solid connection between the toothing part and the threaded part can be achieved by forming a positive connection between the two parts. Particularly preferably, the toothing part has an internal toothing and the threaded part has an external toothing, which can be brought into engagement with one another to form a positive, rotationally fixed connection.
  • The external toothing of the threaded part can also be provided via an elastic material, or be connected via an elastic material with the internal thread-carrying part of the threaded portion to provide correspondingly a further damping between the threaded part and the toothing part.
  • In a preferred development, a decoupling part, preferably made of an elastomer material or of rubber, is arranged between the toothing part and the threaded part. By the decoupling part, a further vibration decoupling between the support unit and the actuator can be achieved so as to further support the formation of a quiet and low-vibration operation.
  • Likewise, the toothing part and the threaded part may preferably have form-locking elements, by means of which a form-fit formed in the direction of the axis of rotation of the spindle nut is also achieved.
  • As an alternative or in addition thereto, the toothing part and the threaded part can also be glued or vulcanized together, for example also using a further intermediate layer such as the above-mentioned decoupling part. However, the solid or even insoluble compound can be formed via a material bond or a frictional connection or another suitable connection method.
  • In a further preferred development, the threaded part has on its outer circumference a groove in which an elastic material is received, on which the toothing part is applied. Accordingly, the toothing part can be elastically damped with respect to the threaded part.
  • The above object is also achieved by a spindle nut having the features of claim 9. Advantageous developments emerge from the subclaims.
  • Accordingly, a spindle nut for an adjustment of a steering column is proposed, which comprises an external toothing for engaging with a drive and an internal thread for engaging with a threaded rod. According to the invention the spindle nut is formed at least in two parts and a toothed part with the external toothing and a threaded part with the internal thread are provided, which are firmly connected to each other. The solid compound may preferably be an insoluble compound.
  • Also via this spindle nut can achieve the advantages described above of a flexible adaptability of the threaded part and the toothing part to the respective requirements and thus achieve a quiet and low-vibration operation.
  • Brief description of the figures
  • Preferred further embodiments and aspects of the present invention are explained in more detail by the following description of the figures. Showing:
  • 1 a schematic perspective view of a steering column with an electrical adjustment;
  • 2 the steering column off 1 in a schematic side view;
  • 3 the steering column off 1 in a further schematic side view;
  • 4 a schematic sectional view through the steering column of 2 off along the AA level 2 ;
  • 5 a drive unit of the steering column according to the preceding figures in an exploded view;
  • 6 a spindle nut in a perspective view in a further embodiment;
  • 7 a perspective schematic representation of in 6 shown spindle nut in an exploded view.
  • Detailed description of preferred embodiments
  • In the following, preferred embodiments will be described with reference to the figures. In this case, identical, similar or equivalent elements in the different figures are denoted by identical reference numerals and a repeated description of these elements will be omitted in the following description in part in order to avoid redundancies.
  • 1 shows a steering column 1 in which a carrying unit connectable to the chassis of a motor vehicle, not shown here 10 has, on which an actuating unit 16 is kept adjustable. The carrying unit 10 includes a console 100 , which on the chassis of the motor vehicle, for example via mounting holes 102 , can be attached.
  • The actuator 16 includes a jacket tube 12 in which a steering shaft 14 is rotatably mounted. At the steering wheel end 141 the steering spindle 14 a steering wheel, not shown here can be attached. The steering spindle 14 This is used by a driver via the steering wheel to the steering shaft 14 introduced steering torque transmitted in a known manner to a steerable wheel, not shown here. The steering spindle 14 can thereby transmit the steering movement of the steering wheel to the steerable wheel with the interposition of a steering gear, optionally with the aid of an auxiliary power assistance.
  • In a variant, the steering movement of the steering shaft 14 also sensory, for example, electrically, electronically or magnetically, be scanned and fed into a controller, which performs with the aid of a steering device pivoting the steerable wheel to represent the steering movement. Such systems are known as steer-by-wire.
  • The jacket tube 12 is in a support tube 104 held displaceably in a longitudinal displacement direction X, wherein the Längsverstellrichtung X in the axial direction of the steering shaft 14 extends. By an adjustment of the jacket tube 12 opposite the support tube 104 can according to a longitudinal adjustment of the steering shaft 14 and thus the steering wheel, not shown, for adjusting the position of the steering wheel to the seating position of a driver of the motor vehicle can be achieved.
  • The support tube 104 is pivotable on the console 100 attached and can around a pivot axis 106 opposite the console 100 be pivoted. An adjustability of the actuator 16 in a height adjustment direction Z, which is oriented substantially perpendicular to the longitudinal displacement direction X, it is made possible that the casing tube 12 via a pivoting mechanism 18 at the console 100 is held. This results in a pivotability of the jacket tube 12 and the steering spindle 14 opposite the carrying unit 10 and especially against the console 100 around the pivot axis 106 such that a height adjustment of not shown here and on the steering shaft 14 arranged steering wheel is achieved in order to achieve in this way an adjustment of the position of the steering wheel to the driver's seating position.
  • In the embodiment, a separate adjustment is for each of the two adjustment directions 2 . 2 ' each with a separate adjusting gear, comprising a threaded rod 26 . 26 ' , as well as a spindle nut 3 ,
  • An adjustment drive 2 is provided, by means of which an adjustment of the actuator 16 opposite the carrying unit 10 can be achieved in the longitudinal adjustment X. The adjustment drive 2 includes a threaded rod 26 , which via an articulation lever 120 with the jacket tube 12 connected is. The articulation lever 120 is in a slot 110 in the support tube 104 so slidably guided that a displacement of the articulation lever 120 opposite the support tube 104 to a displacement of the actuator 16 opposite the carrying unit 10 leads.
  • The threaded rod 26 is at the lever 120 held and extends in the longitudinal adjustment X. The threaded rod 26 is also in a spindle nut 3 held, which is an internal thread 32 having that with the external thread of the threaded rod 26 engaged. The spindle nut 3 is rotatable but stationary with respect to the support tube 104 in a gearbox 34 stored, allowing a rotation of the spindle nut 3 because of thread engagement with the threaded rod 26 to an axial movement of the threaded rod relative to the spindle nut 3 leads. In other words, by a rotation of the spindle nut 3 a relative movement between casing pipe 12 and support tube 104 so instead of that an adjustment of the position of the actuator 16 opposite the carrying unit 10 by the rotation of the spindle nut 3 is effected.
  • The adjustment drive 2 further comprises a drive motor 20 , on its output shaft 24 one in 4 good to recognize worm shaft 22 is arranged. The worm shaft 22 engages in external teeth 30 the spindle nut 3 one, with the external teeth 30 is designed as a worm wheel. The axis of rotation of the worm shaft 22 and the axis of rotation of the spindle nut 3 stand perpendicular to each other, as it is known in a worm gear itself.
  • Accordingly, by a rotation of the output shaft 24 of the drive motor 20 the spindle nut 3 be rotated, creating a longitudinal adjustment in the X direction of the actuator 16 opposite the support tube 104 and thus a displacement of the actuator 16 opposite the carrying unit 10 takes place.
  • Another adjustment drive 2 ' is especially good in 3 to recognize. This further adjustment drive 2 ' west in principle the same structure as the first adjustment 2 on. The further adjustment drive 2 ' drives an adjustment movement of the actuator 16 in height adjustment Z on. About the rotation of a spindle nut 3 will be a threaded rod 26 ' shifted in the axial direction. The threaded rod 26 ' is about a joint 182 with a lever 181 connected. The lever 181 is pivotable in a joint axis 183 on the support tube 104 and in a joint axis 184 at the console 100 , This ensures that over the spindle nut 3 the threaded rod 26 ' a corresponding adjustment to the pivoting mechanism 18 and thus on the actuator 16 and the support tube 104 applies. For a required length compensation, a corresponding compensation function is integrated in one of the joints. In the example, this is by a slot recording of the pivot axis 106 forming bolt in the console.
  • In 5 is the adjustment drive 2 shown again in a schematic, perspective and exploded view. The drive motor 20 with the output shaft 24 on which the worm shaft 22 is formed, can be seen. The worm shaft 22 stands with the external toothing designed as a worm wheel 30 the spindle nut 3 engaged. The spindle nut 3 is in the gearbox 34 stationary and around the axis 260 the threaded rod 26 rotatably held. The spindle nut 3 is in the direction of the axis 260 the threaded rod 26 relative to the support tube 104 not slidably mounted. The gearbox 26 ensures accordingly that by a rotation of the spindle nut 3 with the internal thread 32 the spindle nut 3 engaged threaded rod 26 in the direction of the axis 260 the threaded rod 26 can be moved.
  • In the in the 1 to 5 embodiment shown is the spindle nut 3 formed in two parts and includes a toothing part 300 which the external toothing 30 carries, and a threaded part 320 on which the internal thread 32 wearing. The toothing part 300 and the threaded part 320 are firmly connected.
  • In the embodiment shown, the toothing part 300 and the threaded part 320 glued together to form a permanent unit.
  • Preferred embodiments of the spindle nut 3 include different materials for the gearing part 300 and the threaded part 320 in order to be able to meet the respective technical requirements and to be able to provide an optimal combination of materials for every geometry and every application.
  • Here are the gearing part 300 and the threaded part 320 preferably formed of different plastic materials. It is possible that a large number of different toothing parts 300 made of different materials but with the same mold. Likewise, it is possible that a variety of different threaded parts 320 made of different materials but with the same mold. This makes it possible in a simple manner, spindle nuts for different applications in a cost effective manner 3 form, each having different material properties for the toothing part 300 and the threaded part 320 to have.
  • Preferably, the toothing part 300 have at least one non-fiber reinforced plastic, such as POM (polyoxymethylene), POM homopolymers, DELRIN © 100 NC 010 and / or DELRIN © 100 AL NC 010, respectively, in connection with the worm shaft 22 the lowest possible and low-friction operation of the spindle nut 3 to enable. Preferably, the toothing part 300 completely made of a non-fiber reinforced plastic.
  • Preferably, the threaded part 320 have at least one fiber-reinforced plastic or consist entirely of a fiber-reinforced plastic, for example POM with carbon fiber and / or PBT (polybutylene terephthalate) with carbon fiber.
  • Particularly preferred are the material of the toothing part 300 and / or in the material of the threaded part 320 Slip additives added.
  • By providing slip additives in the material of the threaded part 320 becomes a self-lubrication of the internal thread 32 with the threaded rod 26 thus allowing a particularly low-friction and low-noise operation over the life of the spindle nut 3 and this frictional properties over the life of the spindle nut 3 be kept substantially the same.
  • By providing slip additives in the material of the gearing part 300 can the friction characteristics between worm shaft 22 and external teeth 30 be improved and over the life of the spindle nut 3 be kept substantially the same.
  • Through the use of plastic materials, the toothing part 300 and the threaded part 320 be made with different material combinations on the same tools. Accordingly, a variety of different combinations of teeth and threaded parts with different material combinations are provided, which are then inextricably linked together, for example, glued together, vulcanized or connected via a positive connection.
  • Particularly preferred is between the toothing part 300 and the threaded part 320 a decoupling part not shown in the figures, via which a damping decoupling between toothing part 300 and threaded part 320 can be achieved to the acoustic behavior of the spindle nut 3 continue to improve. The decoupling part preferably has an elastomeric material and can be used as an elastomer layer between the toothing part 300 and the threaded part 320 be educated.
  • In a preferred embodiment, which in the 6 and 7 is shown is the spindle nut 3 also made in two parts, again with an external toothing 30 carrying gearing part 300 and one with an internal thread 32 provided threaded part 320 are provided. The toothing part 300 also has an internal toothing 302 on. How to be particularly good from the exploded representation in 7 gives, is the threaded part 320 at its outer periphery with an external toothing 322 provided, which with the internal toothing 302 of the gearing part 300 can be brought into engagement. In this way, the gearing part 300 and the threaded part 320 be inserted into each other and it is in this way a rotationally fixed connection between the internal teeth 302 of the gearing part 300 and the external teeth 322 of the threaded part 320 provided in a form-fitting manner.
  • As it turned out 7 gives, is the external teeth 322 of the threaded part 320 so formed in two parts, so that around the circumference of the threaded part 320 around two annular external teeth 322 ' and 322 '' are provided, between which a footbridge 324 is arranged.
  • Also the internal toothing 302 of the gearing part 300 is formed in two parts, so that the two parts of the internal toothing 302 complementary to the external teeth 322 ' . 322 '' of the threaded part 320 are formed. Between the two parts of the internal toothing 302 of the gearing part 300 is a groove 304 educated.
  • The jetty 324 of the threaded part can into the groove 304 of the gearing part 300 engage positively, so that by a corresponding engagement of the toothing part 300 opposite the threaded part 320 not just a non-rotatable connection between the toothing part 300 and the threaded part 320 can be achieved positively, but also a solid in the axial direction connection can be achieved. Through the jetty 324 and the groove 304 Therefore, form-fitting elements are provided which the formation of a positive connection in the direction of the axis of rotation of the spindle nut 3 form.
  • In addition to providing a positive connection between the toothing part 300 and the threaded part 320 The two parts can also be glued or vulcanized together, or a combination of bonding or vulcanization and positive locking can be selected.
  • As an alternative, an insert injection molding process for producing the spindle nut 3 be used, wherein a corresponding first of one of the two parts is prepared and then molded with the other part. In this case, at least one of the parts may comprise metallic material.
  • About providing the gearing part 300 and the threaded part 320 can be provided by adapting to the particular circumstances within the device via the provision of different material, a plurality of different spindle nuts, which show a comparison with the known from the prior art spindle nuts vibration behavior.
  • Where applicable, all individual features illustrated in the individual embodiments may be combined and / or interchanged without departing from the scope of the invention.
  • LIST OF REFERENCE NUMBERS
  • 1
    steering column
    10
    support unit
    12
    casing pipe
    14
    steering shaft
    141
    Steering wheel end
    16
    actuator
    18
    pivoting
    181
    lever
    182
    joint
    183
    joint axis
    184
    joint axis
    100
    console
    102
    mounting hole
    104
    support tube
    106
    swivel axis
    110
    slot
    120
    Feedback lever
    2
    adjustment
    2 '
    adjustment
    20
    drive motor
    20 '
    drive motor
    22
    worm shaft
    24
    output shaft
    26
    threaded rod
    26 '
    threaded rod
    260
    Axle of the threaded rod
    3
    spindle nut
    30
    external teeth
    32
    inner thread
    34
    gearbox
    34 '
    gearbox
    300
    toothed piece
    302
    internal gearing
    304
    groove
    320
    threaded part
    322
    external teeth
    324
    web
    X
    Längsverstellrichtung
    Z
    height adjustment
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • AT 511962 A4 [0006]

Claims (10)

  1. Steering column ( 1 ) for a motor vehicle, comprising a carrying unit which can be connected to the chassis of the motor vehicle ( 10 ) and an actuating unit ( 16 ), which a steering spindle ( 14 ) for transmitting a steering torque from a steering wheel to a steerable wheel, wherein the actuating unit ( 16 ) opposite the carrying unit ( 10 ) via an adjusting drive ( 2 . 2 ' ), which is a threaded rod ( 26 . 26 ' ) having an internal thread ( 32 ) having spindle nut ( 3 ), and which further comprises a drive motor ( 20 ), which on an outer toothing ( 30 ) of the spindle nut ( 3 ), characterized in that the spindle nut ( 3 ) is formed at least in two parts, wherein a part as a toothing part ( 300 ) is formed, the external teeth ( 30 ) of the spindle nut ( 3 ) and a second part as a threaded part ( 320 ) is formed, which the internal thread ( 32 ) of the spindle nut ( 3 ), wherein the toothing part ( 300 ) and the threaded part ( 320 ) are firmly connected.
  2. Steering column ( 1 ) according to claim 1, characterized in that the toothing part ( 300 ) and the threaded part ( 320 ) comprise mutually different materials, preferably consist of mutually different materials.
  3. Steering column ( 1 ) according to claim 1 or 2, characterized in that the toothing part ( 300 ) comprises non-fiber reinforced plastics, preferably consists of non-fiber-reinforced plastics.
  4. Steering column ( 1 ) according to one of the preceding claims 1 or 2, characterized in that the threaded part ( 320 ) comprises a fiber-reinforced plastic, preferably consists of a fiber-reinforced plastic.
  5. Steering column ( 1 ) according to one of claims 2 to 4, characterized in that the material of at least one of the two parts comprises a slip additive.
  6. Steering column ( 1 ) according to one of the preceding claims, characterized in that the toothing part ( 300 ) and the threaded part ( 320 ) are positively connected with each other and preferably the toothing part ( 300 ) an internal toothing ( 302 ) and the threaded part ( 320 ) an outer toothing ( 322 ), which are engageable with each other to form a positive, rotationally fixed connection.
  7. Steering column ( 1 ) according to one of the preceding claims, characterized in that between the toothing part ( 300 ) and the threaded part ( 320 ) a decoupling, preferably made of an elastomer or rubber, is arranged.
  8. Steering column ( 1 ) according to one of the preceding claims, characterized in that the toothing part ( 300 ) and the threaded part ( 320 ) Positive locking means ( 304 . 324 ), by means of which a in the direction of the axis of rotation of the spindle nut ( 3 ) trained positive connection is achieved.
  9. Spindle nut ( 3 ) for an adjustment drive ( 2 . 2 ' ) a steering column ( 1 ), comprising an outer toothing ( 30 ) for engaging with a drive motor ( 20 ) and an internal thread ( 32 ) to engage with a threaded rod ( 26 ), characterized in that the spindle nut ( 3 ) is formed at least in two parts and a first part, the toothed part ( 300 ) and an outer toothing ( 30 ) and a second part, which as threaded part ( 320 ) is formed and an internal thread ( 32 ) p, wherein the two parts are firmly connected to each other.
  10. Spindle nut ( 3 ) according to claim 9, characterized in that the toothing part ( 300 ) and the threaded part ( 320 ) comprise mutually different materials, preferably consist of mutually different materials.
DE102014101995.4A 2014-02-18 2014-02-18 Steering column for a motor vehicle and spindle nut Ceased DE102014101995A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102014101995.4A DE102014101995A1 (en) 2014-02-18 2014-02-18 Steering column for a motor vehicle and spindle nut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014101995.4A DE102014101995A1 (en) 2014-02-18 2014-02-18 Steering column for a motor vehicle and spindle nut

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015216326A1 (en) 2015-08-26 2016-06-23 Thyssenkrupp Ag Motor-adjustable steering column for a motor vehicle
WO2017045808A1 (en) * 2015-09-14 2017-03-23 Robert Bosch Gmbh Brake booster for a motor vehicle
DE102015224602A1 (en) 2015-12-08 2017-06-08 Thyssenkrupp Ag Steering column for a steer-by-wire steering device
DE102018212202A1 (en) * 2018-07-23 2020-01-23 Thyssenkrupp Ag Gear wheel for an adjustment drive, adjustment drive for a steering column and steering column for a motor vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19962494A1 (en) * 1998-12-25 2000-07-06 Nsk Ltd Automatic steering column adjusting device has steering shaft position detectors and electrical shaft angle and telescopic length actuators
DE202010000305U1 (en) * 2010-02-16 2010-09-09 C. Rob. Hammerstein Gmbh & Co. Kg Spindle nut of a spindle drive made of filled plastic
DE102010012318A1 (en) * 2010-03-23 2011-08-18 Daimler AG, 70327 Plastic spindle nut for steering column of motor car, has two spindle nut halves swingably coupled in division plane by film hinge or mechanical connection unit i.e. screw or clip connection, to form circumferentially closed spindle nut
AT511962A4 (en) 2012-03-06 2013-04-15 Thyssenkrupp Presta Ag Steering column for a motor vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19962494A1 (en) * 1998-12-25 2000-07-06 Nsk Ltd Automatic steering column adjusting device has steering shaft position detectors and electrical shaft angle and telescopic length actuators
DE202010000305U1 (en) * 2010-02-16 2010-09-09 C. Rob. Hammerstein Gmbh & Co. Kg Spindle nut of a spindle drive made of filled plastic
DE102010012318A1 (en) * 2010-03-23 2011-08-18 Daimler AG, 70327 Plastic spindle nut for steering column of motor car, has two spindle nut halves swingably coupled in division plane by film hinge or mechanical connection unit i.e. screw or clip connection, to form circumferentially closed spindle nut
AT511962A4 (en) 2012-03-06 2013-04-15 Thyssenkrupp Presta Ag Steering column for a motor vehicle

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015216326A1 (en) 2015-08-26 2016-06-23 Thyssenkrupp Ag Motor-adjustable steering column for a motor vehicle
DE102015216326B4 (en) * 2015-08-26 2016-09-08 Thyssenkrupp Ag Motor-adjustable steering column for a motor vehicle
WO2017045808A1 (en) * 2015-09-14 2017-03-23 Robert Bosch Gmbh Brake booster for a motor vehicle
CN108025725A (en) * 2015-09-14 2018-05-11 罗伯特·博世有限公司 Brake booster for motor vehicle
US10543825B2 (en) 2015-09-14 2020-01-28 Robert Bosch Gmbh Brake booster for a motor vehicle
DE102015224602A1 (en) 2015-12-08 2017-06-08 Thyssenkrupp Ag Steering column for a steer-by-wire steering device
DE102018212202A1 (en) * 2018-07-23 2020-01-23 Thyssenkrupp Ag Gear wheel for an adjustment drive, adjustment drive for a steering column and steering column for a motor vehicle

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