WO2019101431A1 - Procédé de fabrication d'un mécanisme de direction - Google Patents

Procédé de fabrication d'un mécanisme de direction Download PDF

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Publication number
WO2019101431A1
WO2019101431A1 PCT/EP2018/077910 EP2018077910W WO2019101431A1 WO 2019101431 A1 WO2019101431 A1 WO 2019101431A1 EP 2018077910 W EP2018077910 W EP 2018077910W WO 2019101431 A1 WO2019101431 A1 WO 2019101431A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
sleeve
ring
connecting element
pinion
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
PCT/EP2018/077910
Other languages
German (de)
English (en)
Inventor
Jens-Uwe Hafermalz
Ekkehard Kneer
Dennis Fuechsel
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2019101431A1 publication Critical patent/WO2019101431A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0409—Electric motor acting on the steering column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/042—Housings for rolling element bearings for rotary movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/22—Toothed members; Worms for transmissions with crossing shafts, especially worms, worm-gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/40—Shaping by deformation without removing material
    • F16C2220/42—Shaping by deformation without removing material by working of thin-walled material such as sheet or tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/40—Shaping by deformation without removing material
    • F16C2220/48—Shaping by deformation without removing material by extrusion, e.g. of metallic profiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/60—Shaping by removing material, e.g. machining
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/30—Material joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/30—Material joints
    • F16C2226/36—Material joints by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller bearings self-adjusting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/20—Land vehicles
    • F16C2326/24—Steering systems, e.g. steering rods or columns
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/61—Toothed gear systems, e.g. support of pinion shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/067—Fixing them in a housing

Definitions

  • the invention relates to a method for producing a steering gear for a steering system of a motor vehicle.
  • the known power steering systems are based on a steering gear that translates the drive power of a hydraulic or electric steering motor and transmits, for example, the steering column.
  • Such steering gear can be in the form of a fferablylzgetriebes and in particular as fferradgetriebe or as
  • Worm gear be formed. These then comprise a gear wheel, which may be directly or indirectly connected to the steering column, as well as an intermeshing, driven by a shaft of the steering motor pinion.
  • Pinion shaft and extends at a distance from the toothing engagement of pinion and gear, is stored and is pressed by means of one or more spring elements against the gear.
  • the pivoting of the pinion shaft is thereby regularly in one of the two bearings over which the pinion shaft is mounted end-integrated.
  • This storage is hereinafter referred to as "fixed bearing”.
  • the storage in the region of the other end is then carried out with a defined clearance (cf., for example, DE 10 2005 035 020 A1), hereinafter referred to as "floating bearing", in order to obtain the positions indicated by
  • the fixed bearing may in particular be provided on the drive side, while the floating bearing on the free End of the pinion shaft is arranged.
  • the one or more spring elements for pressing the pinion to the gear can be integrated either in the movable bearing or in the fixed bearing.
  • Such a steering gear in which the spring force is generated for the springing by means of the fixed bearing for example, from DE 10 2009 054 655 A1 known.
  • this steering gear is provided to store a ball bearing, which receives the pinion shaft in the region of the fixed bearing on the outside in a pivot sleeve.
  • Swivel sleeve includes a bearing sleeve which receives the ball bearing largely free of play, and an outer ring which is held largely free of play in a receptacle of a housing of the steering gear, wherein the outer ring and the bearing sleeve are connected via two torsion bars, which upon rotation of the outer ring to the bearing sleeve be twisted.
  • Steering gear is a pinion shaft rotatably mounted in a sleeve which in turn pivotally in the region of a fixed bearing in a housing of the steering gear is stored.
  • a biasing device acts in the region of a movable bearing the sleeve and thereby presses the pinion shaft against a gear of the steering gear.
  • the invention has for its object to improve a steering gear, as it is basically known from DE 10 2009 054 655 A1, in terms of size and thus in terms of the space required for its integration into a motor vehicle space or to reduce and produce such a steering gear advantageous ,
  • a method for producing a steering gear for a steering system of a motor vehicle, which has a housing, a toothed wheel, a pinion meshing with the toothed wheel, in particular a screw pinion, and a (screw) pinion shaft comprising the pinion.
  • the pinion shaft is mounted on one side of the pinion in a fixed bearing, which includes a pivot bearing in which the pinion shaft is received.
  • the rotary bearing comprises at least one inner bearing ring and an outer bearing ring and optionally, in a preferred embodiment as rolling and in particular ball bearings, a plurality of arranged between the bearing rings rolling elements, in particular balls, wherein the pinion shaft is received within the inner bearing ring of the pivot bearing.
  • the pivot bearing and concretely the outer bearing ring of the pivot bearing of the fixed bearing is further added to a bearing sleeve.
  • the bearing comprises a pivot ring having an outer ring and an inner ring, which are pivotally connected to each other via one or more torsion bars, wherein the inner ring connected to the bearing sleeve or integral part of this and the outer ring in the housing of the steering gear (with respect to at least one, preferably with respect to all directions, ie
  • the pinion shaft of a steering gear according to the invention is mounted on the other side of the pinion in a floating bearing comprising a pivot bearing in which the pinion shaft is received, wherein for the pivot bearing and thus also for the end of the pinion shaft received therein a radial mobility within the Housing is granted.
  • the pivot bearing and in particular an outer bearing ring thereof is received in a bearing bush, which is arranged within the housing such that a radial mobility of the pivot bearing within the housing ge may be provided.
  • Such a floating bearing for example, an embodiment according to the
  • the bearing bush of the movable bearing has a rotary bearing receiving inner bushing and a surrounding the inner bush and fixedly arranged in the housing
  • the bearing bush can also be designed such that it is connected to a stop element or itself as a stop sleeve, which is arranged displaceably and simultaneously secured against rotation within a receiving space of the housing, wherein a stop between the
  • Pivoting movement of the pinion shaft is limited, wherein the stop element or the stop sleeve on the one hand and the receiving space on the other hand are formed such that only in such a stop, due to the interaction of then contacting contact surfaces of the stop element or the stop sleeve and the wall of the receiving space, in addition a pivoting movement of the Pinion shaft is blocked about a perpendicular to the pivot axis aligned axis.
  • the pivot bearing of the floating bearing of the steering gear according to the invention comprises at least one inner bearing ring and an outer bearing ring and
  • a rolling and in particular as a ball bearing arranged between the bearing rings rolling elements, in particular balls, wherein the pinion shaft is received within the inner bearing ring and the outer bearing ring is received in particular directly inside the inner bush of the bearing bush of the floating bearing.
  • the bearing sleeve and / or an outer Bearing ring of the pivot bearing of the fixed bearing is connected via an at least partially or partially tubular connecting element with an outer bearing ring of the pivot bearing of the movable bearing or a rotary bearing of the movable bearing receiving bearing bush.
  • the connecting element is designed such that this at least one load, which leads to a tilting of the outer ring of the pivot bearing of the fixed bearing, transmits directly or indirectly to the outer ring of the pivot bearing of the movable bearing.
  • the connecting element and / or the bearing sleeve and / or the bearing bush which are each preferably made of metal optionally made of plastic,
  • machining by machining, in particular from a semi-finished product (for example a rod or a pipe) and / or
  • the connecting element is at least partially tubular.
  • the connecting element is at least partially tubular.
  • Connecting element is tubular over its entire length and surrounds the pinion shaft, wherein a (preferably the only) arranged in the region of the pinion shell opening is provided in the tube shell of the connecting element, which extends over part of the circumference and part of the length of the tubular jacket and which allows engagement of the pinion with the gear.
  • a tubular connecting element is relative, in particular with respect to the
  • Component weight, rigid which allows an advantageous transfer of a swivel load from the bearing sleeve and / or the outer bearing ring of the pivot bearing of the fixed bearing on the floating bearing.
  • a jacket opening in the pipe jacket of the connecting element can preferably be formed by punching and / or laser cutting.
  • shell openings which are optionally formed in the bearing sleeve and / or in the bearing bush.
  • the bearing sleeve forming part of the fixed bearing can in particular comprise a number of shell openings corresponding to the number of torsion webs of the swivel ring, through which a respective torsion web extends.
  • the bearing bush forming part of the floating bearing may in particular at least one axially extending, i.e. form a larger extent in the direction of the longitudinal axis of the bearing bush (or the pinion shaft or the pivot bearing) having in the circumferential direction, shell opening, in a preferred combination with a directly contacting bearing of the outer bearing ring of the pivot bearing of the floating bearing in the bearing bush to an advantageous axial mobility of the Can contribute pivot bearing within the bearing bush.
  • Embodiment of a steering gear to be produced according to the invention can be provided that the connecting element with the bearing sleeve and / or with the bearing bush is formed integrally and of the same material.
  • a multi-piece configuration with a subsequent connection of the individual components may be advantageous, so that it can be provided that the bearing sleeve and / or the bearing bush formed as separated from the connecting element (s) component (s) and then preferably cohesively, in particular by welding (preferably laser welding), is connected to the connecting element / are.
  • welding preferably laser welding
  • the bearing bush is formed as received in a sleeve member.
  • This sleeve component may in particular be the stop element / stop sleeve already described whose stops on a wall of the receiving space limit the pivoting mobility of the pinion shaft guided by the fixed bearing.
  • the sleeve member made of plastic or an elastomer is formed.
  • the sleeve component made of plastic or an elastomer is formed.
  • the steering gear to be produced according to the invention can in particular be part of a steering system, which furthermore has a rotationally driving manner with the pinion shaft of the steering gear
  • Steering gear may include connected steering motor.
  • Steering gear can continue to be rotatably or rotationally drivingly connected to a steering shaft, in particular a steering column, the steering system.
  • Steering system may be designed in particular as a power steering system, in which by means of the steering motor, a supporting torque can be generated so that a driver of a power steering system comprehensive motor vehicle for steering the motor vehicle to be applied to the steering column steering torque reduced (possibly temporarily up to zero ).
  • a supporting torque can be generated so that a driver of a power steering system comprehensive motor vehicle for steering the motor vehicle to be applied to the steering column steering torque reduced (possibly temporarily up to zero ).
  • FIG. 2 shows a longitudinal section through a fixed bearing, a connecting element and a bearing bush of a loose bearing for a steering gear according to the invention to be produced according to a second
  • FIG. 4 the mounting component according to FIG. 3 in a perspective view.
  • FIG. 5 shows a longitudinal section through a fixed bearing, a connecting element, a
  • FIG. 6 shows the component group according to FIG. 5 in a perspective view
  • Fig. 7a to 7d in each case a longitudinal section, the components which differ according to
  • Steps have resulted in the production of the component group according to Figures 5 and 6; 8 shows a longitudinal section through a mounting component in an alternative to that of the component group according to FIGS. 5 to 7
  • Fig. 1 shows the essential components of an inventive
  • Steering gear This comprises a housing 1, within which a gear 2 and a meshing with the gear 2 pinion 3 are rotatably arranged in the form of a fferritzels.
  • the pinion 3 and the pinion 3 comprehensive (screw) pinion shaft 4 are integrally formed in the form of a worm.
  • the gear 2 is fixedly mounted on an output shaft 5 of the steering gear.
  • This output shaft 5 which has a toothing for a secure rotationally fixed connection with the gear 2 in the illustrated embodiment, for example, with a trained at least in one section as a rack handlebar, whereby the rack performs a translational movement in a known manner via Radlenkhebel (not shown) in a pivoting movement of steerable wheels (not shown) of the motor vehicle can be translated.
  • the output shaft 5 may also be a steering column of a power steering system, which is connected to a steering wheel and a steering pinion on the
  • Handlebar acts.
  • the pinion shaft 4 has a drive-side end over which this with the
  • Output shaft of a steering motor (not shown, for example, an electric motor) is connectable.
  • the pinion shaft 4 is mounted in the housing 1 by means of a first bearing.
  • This bearing is designed as a fixed bearing 6, which allows a pivoting of the pinion shaft 4 about a pivot axis 7 (see Fig. 6).
  • This pivot axis 7 extends in FIG. 1 approximately perpendicular to
  • This movable bearing 8 is designed so that it allows the resulting from the pivoting deflection of this end of the pinion shaft 4.
  • Both the fixed bearing 6 and the floating bearing 8 each comprise a pivot bearing in the form of a ball bearing 9.
  • inner bearing rings 10 of these ball bearings 9 the corresponding portions of the pinion shaft 4 are supported, while outer bearing rings 11 of the ball bearing 9 in each bearing device 12, 13 stored are in turn received in the housing 1.
  • the bearing devices 12, 13 are structurally designed so that they allow in the case of the fixed bearing 6, the pivoting of the pinion shaft 4 about the pivot axis 7 and in the case of the movable bearing 8, the deflection of the free end of the pinion shaft 4.
  • the bearing device 12 of the fixed bearing 6 comprises a bearing sleeve 14 with nikringförmigem cross section, the inner side in a first longitudinal section, the associated ball bearing 9 and in a second longitudinal section receives an inner ring 16 of a pivot ring 15.
  • This inner ring 16 of the pivot ring 15 and the outer bearing ring 11 of the ball bearing 9 are axially secured within the bearing sleeve 14 with the interposition of several annular discs 17, wherein the inner ring 16 with interposition of an annular disc 17 on the one hand to the outer bearing ring 11 of the ball bearing 9 and on the other on a first, circumferential shoulder 26, which forms a ring member 33 of the fixed bearing 6 at one axial end of the bearing sleeve 14 is supported.
  • Inner ring 16 of the pivot ring 15 distally located side of the outer bearing ring 11 of the ball bearing 9 with the interposition of an annular disc 17 on a second, circumferential shoulder 27, which forms the bearing sleeve 14 at this axial end, supported.
  • the swivel ring 15 comprises, in addition to the inner ring 16, an outer ring 18.
  • This outer ring 18 is connected to the inner ring 16 via two torsion webs 19 (see FIG.
  • the outer ring 18, the inner ring 16 and the torsion bars 19 are preferably formed integrally from, for example, spring steel.
  • the two torsion bars 19 define the position of the pivot axis 7 about which the outer ring 18 is pivotable relative to the inner ring 16 of the pivot ring 15.
  • the torsion bars 19 of the pivot ring 15 not only allow pivoting of the outer ring 18 to the inner ring 16 and thus the pinion shaft 4 relative to the gear 2 and the housing 1, but at the same time cause the spring force by which the pinion 3 in the toothing of the Gear 2 is pressed in order to achieve the lowest possible backlash and thus the lowest possible noise during operation of the steering gear, especially in a Komlenken.
  • the bearing device 13 of the floating bearing 8 comprises a serving as a stop sleeve 23 sleeve component which is movable within one of the housing.
  • the steering gear further comprises a connecting element 28, which with the
  • the connecting element 28 is generally tubular with annular or part-circular-shaped cross-sections, wherein this has a shell opening 29 which in a central portion of the Connecting element 28 is arranged and which extends over a portion of the circumference thereof.
  • a portion of the gear 2 in the bounded by the connecting element 28 and the pinion shaft 4 receiving inner volume protrude to allow engagement of the teeth of the gear 2 and the pinion 3.
  • the connecting element 28 is further connected to a bearing bush 30 of the fixed bearing 6 in one piece and of the same material.
  • the ball bearing 9 of the floating bearing 8 is axially movable with the associated outer bearing ring 1 1 within this
  • the bearing bush 30 stored.
  • the bearing bush 30 in turn is inside in the
  • connecting element 28 By means of the connecting element 28 on the one hand causes the elastic restoring moments resulting from the torsion of the torsion bars 19 of the swivel ring 15 of the fixed bearing 6 are not transmitted exclusively via the ball bearing 9 of the fixed bearing 6 on the pinion shaft 4, resulting in a relatively high tilt load This ball bearing 9 would be connected. Rather, these are elastic
  • Fixed bearing 6, connecting element 28 and bearing bush 30 of the movable bearing 8 of the steering gear according to FIG. 1, which is hereinafter referred to as a bearing component was formed by machining of a semi-finished, such as a rod or a pipe.
  • the machining involved in particular a rotation of the bearing component and a milling for training u.a. the shell opening 29 of the connecting element 28 and two shell openings 31 of the bearing bush 30 through which the torsion bars 19 of the pivot ring 15 extend in the mounted state of the steering gear.
  • the semifinished product and thus also the bearing sleeve 14, the connecting element 28 and the bearing bush 30, for example may consist of a plastic or a metal, in particular steel.
  • Alignment of the two pinion shaft 4 bearing pivot bearing 9 define each other, can be achieved. After mounting the remaining components of the fixed bearing 6 within the
  • Bearing sleeve whose position can be secured to each other by the ring member 33 is inserted into the corresponding end portion of the bearing sleeve 14 and with this cohesively, for example by welding or soldering, is connected.
  • the stop sleeve 23 of the movable bearing 8 consists of a thermoplastic
  • the stop sleeve 23 can be manufactured separately, for example by means of injection molding, and subsequently placed on the bearing bush 30 and connected thereto. Alternatively, it is possible to spray the stop sleeve 23 onto the bearing bush 30 as part of an injection molding process.
  • FIGS. 2 to 4 show an alternative embodiment of a bearing component and therefore a combination of a bearing sleeve 14 for a fixed bearing 6, a connecting element 28 and a bearing bush 30 for a movable bearing 8 of a
  • the likewise integral bearing component according to FIGS. 2 to 4 differs from that according to FIG. 1 exclusively in the manner of production. Specifically, a production by deep drawing of a metallic blank is provided for this storage component. Subsequently, the jacket opening 29 of the
  • Swing ring 15 extend, introduced by punching or laser cutting.
  • Lagerungsbauteils which is formed by the bearing sleeve 14, inserted into the bearing sleeve 14 until the outer bearing ring 11 of the ball bearing 9 at the (second) Paragraph 27, which is arranged in the transition from the connecting element 28 to the bearing sleeve 14, strikes. Subsequently, the free end portion of the bearing sleeve
  • FIGS. 5 to 7 show a further alternative embodiment of a
  • the mounting member according to FIGS. 5 to 7 is formed in several pieces, i. the bearing sleeve 14, the connecting element 28 and the bearing bush 30 were first prepared as separate components and then connected to form the storage component together, in particular welded.
  • these components may be produced, for example, both by deep drawing and by winding from a respective sheet metal part.
  • the bearing sleeve 14 and the bearing bush 30 were each made by deep drawing and the connecting element 28 by winding.
  • the opening or side cutouts in the sheet metal part, which form the shell opening 29 in the wound state of the sheet metal part or in the connecting element 28, can preferably have been introduced before winding, for example by punching.
  • the component group according to FIGS. 5 and 6 is produced by first producing the bearing sleeve 14, the (second) stop 27, to which the connecting element 28 adjoins, being already formed becomes. Subsequently, the fixed bearing 6 is mounted, including the associated pivot bearing 9, the inner ring 16 of the pivot ring 15 and the two annular discs 17 in the axial direction, ie along the longitudinal axis 32 of the bearing member, inserted through the relative to the paragraph 27 distal end of the bearing sleeve 14 is until the outer bearing ring 11 of the ball bearing 9 abuts the shoulder 27.
  • the axially outer annular disc 17 is materially connected to the bearing sleeve 14, for example by welding or soldering, whereby the components of the fixed bearing 6 are finally positioned firmly to each other.
  • this fixed bearing 6 thus forms the outer ring disk 17 a (first) paragraph 26 of the bearing sleeve 14 from.
  • the previously produced connecting element 28 can be connected by welding, in particular, with the end of the bearing sleeve 14 which forms the shoulder 27 (cf., FIG. 7b).
  • the previously produced bearing bush 30 can then be connected to the still free end of the connecting element 28 (see FIG.
  • it can then be provided to apply the stop sleeve 23 to the bearing bush 30, which in turn can be realized by a subsequent application of a previously separately prepared stop sleeve 23 or by spraying the intended for the formation of the stop sleeve 23 plastic.
  • the bearing bush 30 on the outside forms a securing projection 34 which engages in a correspondingly shaped recess of the stop sleeve 23 and thereby, optionally in addition to a cohesive connection between the bearing bush 30 and the stop sleeve 23, causes a rotation for these components.
  • Figs. 8 to 10 also show a multi-piece mounting member which may have been made as that shown in FIGS. 5 to 7.
  • the storage component according to FIGS. 8 to 10 differs from that according to FIGS. 5 to 7 essentially only with regard to the configuration of the jacket opening 29 of the connecting element 28, which extends in the connecting element 28 according to FIGS. 8 to 10 over its entire length , Access character list Enclosure

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Gear Transmission (AREA)

Abstract

L'invention concerne un mécanisme de direction pour un système de direction d'un véhicule à moteur, ledit mécanisme de direction comprenant : un carter (1), une roue dentée (2), un pignon (3) s'engrenant avec la roue dentée (2) et un arbre de pignon (4) comportant le pignon (3), l'arbre de pignon (4) étant monté dans un palier fixe (6) sur une face du pignon (3), lequel palier fixe comporte une crapaudine dans laquelle est logé l'arbre de pignon (4) et laquelle crapaudine est logée dans une douille-palier (14), et le palier fixe (6) comportant en outre une bague pivotante (15) qui présente une bague extérieure (18) ainsi qu'une bague intérieure (16), lesquelles sont reliées l'une à l'autre de manière pivotante, par l'intermédiaire d'un ou plusieurs éléments de liaison de torsion, la bague intérieure (16) étant reliée, à l'intérieur la douille-palier (14) ou étant intégrée dans ladite douille-palier et la bague extérieure (18) étant montée fixée dans le carter (1), et l'arbre de pignon (4) étant monté sur l'autre face du pignon (3) dans un palier libre (8), lequel comprend une crapaudine dans laquelle est logé l'arbre de pignon (4), une mobilité radiale à l'intérieur du carter (1) étant assurée pour la crapaudine, et la douille-palier (14) et/ou une bague de palier extérieure (11) de la crapaudine du palier fixe (6) étant reliées, par l'intermédiaire d'un élément de liaison (28) au moins en partie tubulaire, à une bague de palier extérieure (11) de la crapaudine du palier libre (8) ou à une douille-palier (30) logeant la crapaudine du palier libre (8). Selon l'invention, l'élément de liaison (28) et/ou la douille-palier (14) et/ou le coussinet (30) sont réalisés à partir d'une tôle, par usinage par enlèvement de copeaux et/ou par emboutissage profond et/ou par enroulement.
PCT/EP2018/077910 2017-11-23 2018-10-12 Procédé de fabrication d'un mécanisme de direction Ceased WO2019101431A1 (fr)

Applications Claiming Priority (2)

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DE102017220917.8A DE102017220917A1 (de) 2017-11-23 2017-11-23 Verfahren zur Herstellung eines Lenkgetriebes
DE102017220917.8 2017-11-23

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WO2019101431A1 true WO2019101431A1 (fr) 2019-05-31

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4343174B1 (fr) * 2022-09-23 2025-10-29 Getriebebau NORD GmbH & Co. KG Engrenage à vis sans fin à répartition de puissance et moteur à engrenages équipé de celui-ci

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005035020A1 (de) 2005-07-27 2007-02-01 Zf Lenksysteme Gmbh Radialbewegliches Loslager für eine Welle eines Lenksystems
DE102008002769A1 (de) 2008-02-12 2009-08-20 Zf Lenksysteme Gmbh Schraubradgetriebe und damit ausgestattete elektrische Hilfskraftlenkung
DE102009054655A1 (de) 2009-12-15 2011-06-16 Zf Lenksysteme Gmbh Lenkgetriebe mit Festlager und Loslager für Schraubritzel
EP2836417B1 (fr) * 2012-04-12 2016-06-29 Robert Bosch Automotive Steering GmbH Mécanisme de direction
EP2836416B1 (fr) * 2012-04-12 2016-08-03 Robert Bosch Automotive Steering GmbH Palier libre pour mécanisme de direction
WO2017153083A1 (fr) * 2016-03-08 2017-09-14 Robert Bosch Automotive Steering Gmbh Mécanisme de direction

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005035020A1 (de) 2005-07-27 2007-02-01 Zf Lenksysteme Gmbh Radialbewegliches Loslager für eine Welle eines Lenksystems
DE102008002769A1 (de) 2008-02-12 2009-08-20 Zf Lenksysteme Gmbh Schraubradgetriebe und damit ausgestattete elektrische Hilfskraftlenkung
DE102009054655A1 (de) 2009-12-15 2011-06-16 Zf Lenksysteme Gmbh Lenkgetriebe mit Festlager und Loslager für Schraubritzel
EP2836417B1 (fr) * 2012-04-12 2016-06-29 Robert Bosch Automotive Steering GmbH Mécanisme de direction
EP2836416B1 (fr) * 2012-04-12 2016-08-03 Robert Bosch Automotive Steering GmbH Palier libre pour mécanisme de direction
WO2017153083A1 (fr) * 2016-03-08 2017-09-14 Robert Bosch Automotive Steering Gmbh Mécanisme de direction

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