WO2008095812A1 - Unité d'entraînement comprenant un engrenage planétaire sphérique pour diriger les roues d'un véhicule - Google Patents

Unité d'entraînement comprenant un engrenage planétaire sphérique pour diriger les roues d'un véhicule Download PDF

Info

Publication number
WO2008095812A1
WO2008095812A1 PCT/EP2008/050972 EP2008050972W WO2008095812A1 WO 2008095812 A1 WO2008095812 A1 WO 2008095812A1 EP 2008050972 W EP2008050972 W EP 2008050972W WO 2008095812 A1 WO2008095812 A1 WO 2008095812A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
flange
drive unit
bearing
drive
Prior art date
Application number
PCT/EP2008/050972
Other languages
German (de)
English (en)
Inventor
Hans-Thomas Schmidt
Original Assignee
Brose Fahrzeugteile Gmbh & Co. Kg
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 Brose Fahrzeugteile Gmbh & Co. Kg filed Critical Brose Fahrzeugteile Gmbh & Co. Kg
Publication of WO2008095812A1 publication Critical patent/WO2008095812A1/fr

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
    • B62D5/0421—Electric motor acting on or near steering gear
    • B62D5/0424—Electric motor acting on or near steering gear the axes of motor and final driven element of steering gear, e.g. rack, being parallel
    • B62D5/0427—Electric motor acting on or near steering gear the axes of motor and final driven element of steering gear, e.g. rack, being parallel the axes being coaxial
    • 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
    • B62D5/0442—Conversion of rotational into longitudinal movement
    • B62D5/0445—Screw drives
    • B62D5/0448—Ball nuts

Definitions

  • the invention relates to a drive unit with an axial gear for steering the wheels of a vehicle, which has a handlebar, a recirculating to the handlebar ball screw drive, which has a recirculating ball nut, and a stator and a rotor having
  • Electric motor which is arranged in the coaxial direction of the handlebar next to the ball screw drive has.
  • Such a drive unit is known from DE 37 35 517 C2. This known unit is for steering the two
  • the electric motor has a parallel to the tie rod and extending to the tie rod to the longitudinal displacement via an axial transmission engaging output shaft.
  • This output shaft is a hollow shaft enclosing the tie rod.
  • the axial gear has a spindle nut to be driven by the hollow shaft and secured in a housing against an axial displacement. This is coupled to a spindle portion of the tie rod.
  • On the spindle nut acts at least one biased, elastically resilient member.
  • Each end of the spindle nut is supported on a housing via a ball bearing and an elastically flexible member with a force component directed towards the middle region of the spindle nut.
  • the spindle nut is coupled via balls to the spindle portion of the tie rod.
  • a reduction gear is provided between the spindle nut and the rotor of the electric motor.
  • the spindle nut is screwed directly onto the spindle portion of the tie rod and further connected via a keyway with the rotor of the motor.
  • the advantages of the invention are, in particular, that the firm coupling of the recirculating ball drive with the rotor, which is necessary during operation, is ensured by the fixed connection of the recirculating ball nut with a flange of the rotor. Furthermore, due to the fixed connection of the recirculating ball nut with the flange of the rotor, a common bearing can be used for the ball screw drive and the rotor, so that no separate bearing is required for the recirculating ball drive. This increases the compactness of the drive unit and reduces the number of components of the drive unit. This saving of components also leads to cost advantages compared to known drive units.
  • a drive unit with the features of claims 2 and 3 has the advantage that in the final assembly of the drive unit in the factory no disassembly of the rotor is necessary.
  • the individual assemblies of the drive unit ie the housing, the electric motor and the ball screw drive with the handlebar and the ball nut from various manufacturers are supplied. These modules must be assembled in the final assembly plant to form a complete drive unit.
  • disassembly of the rotor is necessary in known drive units to provide a connection to the ball screw drive.
  • a deduction of the rotor is necessary. This is time consuming and expensive. Furthermore, there are significant risks when disassembling the rotor.
  • the electric motor can be completely inserted into the housing of the drive unit.
  • the electric motor or its rotor In the inserted state of the electric motor or its rotor is connected by two bearings with the housing.
  • One of these bearings is positioned between the flange of the rotor and a side wall of the housing.
  • the recirculating ball drive with the handlebar and the recirculating ball nut is inserted into the housing and the recirculating ball drive is fastened to the flange of the rotor using screws, which are preferably guided through a radially protruding flange of the recirculating ball nut.
  • the positioned between the flange of the rotor and a side wall of the housing bearing, which is preferably a four-point bearing, because of the fixed connection of the ball screw drive with the flange of the rotor also serves as a support for the ball screw drive relative to the housing. Another bearing for the recirculating ball drive is therefore not necessary.
  • FIG. 4 shows a longitudinal sectional view of a drive unit according to the invention.
  • the illustrated drive unit has a guided by a housing and on both sides out again led out of the housing handlebar 1. This is provided for steering the wheels of a vehicle, wherein at the two ends of the steering rod each steering lever of a wheel are coupled.
  • the steering rod has in a known manner to a spindle portion in which it cooperates via balls with a ball nut 2.
  • the ball nut 2 has in its axially central region on a radially outwardly projecting flange 2a.
  • the drive unit shown in the figure has an electric motor to which a stator 3 provided with a stator winding 3a and a rotor provided with a rotor body 4 and with permanent magnets 4b belong.
  • the radial outer side of the stator 3 is fixed to the inner wall of the housing 6.
  • the winding ends of the stator windings 3a are combined in a stator contact unit 3b and are connected via this stator contact unit in connection with an electronic control unit, not shown in the figure.
  • the rotor which is positioned in the axial direction next to the recirculating ball drive with the recirculating ball nut 2, has a flange 4a in its end facing the recirculating ball nut 2 on the rotor body 4.
  • This flange 4 a of the rotor body 4 is fixedly connected to the flange 2 a of the ball nut 2, wherein this fixed connection was brought about by means of screws 5.
  • the flange 4a is in its radially inner region with a
  • Stage 4c provided. Due to this step 4c, there is a free space 10 between the recirculating ball nut 2, the flange 2a of the recirculating ball nut 2 and the flange 4a of the rotor body 4. This is used in the operation of the drive unit for ball recirculation.
  • the flange 2a of the recirculating ball nut 2 axially directed openings 2b, which also provide free space for the ball return.
  • the flange 4a of the rotor body 4 is provided on its radical outer side with a step 4d, in which a
  • Fixed bearing 7 is added. In this fixed bearing is a common to the rotor and the ball screw four-point bearing, which supports said assemblies on the inner wall of the housing 6.
  • the reference numeral 8 denotes a groove nut, the reference numeral 12 a clamping ring and the reference numeral 13 a rotational position sensor, which has, for example, a magnetic wheel, a resolver rotor or a gear.
  • the housing 6 of the drive unit is closed in the figure on the right side by a housing cover 6a.
  • the bearing 9 When assembling the drive unit shown in the figure, the bearing 9 is first inserted into the housing 6.
  • this bearing 9 which is for example a ball bearing, it is a floating bearing. This has play to the rotor body 4 and therefore is able to compensate for temperature differences based material expansion of components of the drive unit.
  • the bearing 9 is biased axially by means of a spring washer 14
  • the stator assembly is inserted into the housing 6.
  • the clamping ring 12 shown in the figure serves to fix the stator assembly at the desired position in the housing 6, which is pushed onto the stator inserted in the housing in the axial direction x becomes.
  • the rotor assembly is inserted, to which the rotor body 4, the flange 4a, the magnets 4b, the spring washer 14, the groove nut 11 and the four-point bearing 7 belong.
  • the inserted rotor assembly is axially fixed in the housing 6 by the nut 8. After this fixation of the rotor assembly in the housing, the electric motor is operable and can be tested.
  • the four-point bearing 7 is pressed onto the flange 4a.
  • Another embodiment is to form the outside of the flange 4 a such that the flange 4 a simultaneously serves as an inner ring of the four-point bearing 7.
  • the handlebar 1 with the attached ball screw drive which belongs to the ball nut 2, inserted into the housing 6.
  • This insertion takes place in such a way that the flange 2a of the ball nut 2 rests directly on the flange 4a of the rotor body 4.
  • the recirculating ball drive is fastened to the flange of the rotor by means of the screws 5.
  • the housing cover 6a is placed and fixedly connected to the housing 6, for example by screwing.
  • the electric motor is supported by the bearings 9 and 7 relative to the housing 6 after its insertion into the housing 6.
  • a subsequent insertion of the ball screw drive together with the handlebar 1 into the housing 6 and the required attachment of the ball screw drive on the rotor of the electric motor mit- Tels of the screws 5 can be done without disassembly of the electric motor.
  • the bearing 7 serves as a common bearing for the rotor of the electric motor and the recirculating ball drive.
  • a separate, additional bearing for the recirculating ball drive is not necessary. This has the advantage of saving an additional bearing for the recirculating ball drive, as is required in known drive units.
  • the screwing of the recirculating ball drive with the rotor of the electric motor has the advantage of a fixed connection between said assemblies, which also withstands the stresses occurring during operation.
  • a drive unit is provided with an axial gear for steering the wheels of a vehicle, which is compact, requires fewer components than known drive units and in which the ball screw drive is positioned in the same axial region of the handlebar, in which also the common Bearer 7 is located.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Steering Mechanism (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

L'invention concerne une unité d'entraînement qui présente une barre de direction, un engrenage planétaire sphérique présentant un écrou planétaire sphérique et étant en liaison fonctionnelle avec la barre de direction, et un moteur électrique présentant un stator et un rotor et étant monté dans une direction coaxiale de la barre de direction à côté de l'engrenage planétaire sphérique. Le rotor présente sur son côté tourné vers l'engrenage planétaire sphérique une bride (4a), à laquelle l'écrou planétaire sphérique (2) de l'engrenage planétaire sphérique est relié de manière fixe au moyen de vis (5).
PCT/EP2008/050972 2007-02-08 2008-01-28 Unité d'entraînement comprenant un engrenage planétaire sphérique pour diriger les roues d'un véhicule WO2008095812A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710006364 DE102007006364B4 (de) 2007-02-08 2007-02-08 Antriebseinheit mit einem Axialgetriebe zum Lenken der Räder eines Fahrzeugs
DE102007006364.6 2007-02-08

Publications (1)

Publication Number Publication Date
WO2008095812A1 true WO2008095812A1 (fr) 2008-08-14

Family

ID=39205289

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/050972 WO2008095812A1 (fr) 2007-02-08 2008-01-28 Unité d'entraînement comprenant un engrenage planétaire sphérique pour diriger les roues d'un véhicule

Country Status (2)

Country Link
DE (1) DE102007006364B4 (fr)
WO (1) WO2008095812A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2587093A1 (fr) * 2011-10-28 2013-05-01 Sanyo Denki Co., Ltd. Actionneur linéaire
DE102022120307A1 (de) 2022-08-11 2024-02-22 Schaeffler Technologies AG & Co. KG Fahrwerksaktuator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009024830B4 (de) * 2009-06-13 2022-10-06 Volkswagen Ag Elektromechanische Lenkung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4425101A1 (de) * 1993-07-29 1995-02-02 Honda Motor Co Ltd Elektrisch unterstütztes Lenk-Servosystem
WO2001040046A1 (fr) * 1999-12-01 2001-06-07 Krupp Presta Ag Dispositif d'assistance de direction electrique tubulaire a rendement eleve
EP1357012A1 (fr) * 2002-04-24 2003-10-29 Toyoda Koki Kabushiki Kaisha Mécanisme de vis à billes et direction assistée avec un tel mécanisme

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5083626A (en) 1986-10-20 1992-01-28 Honda Giken Kogyo Kabushiki Kaishi Rear wheel steering device for vehicle with four steerable wheels
KR0138046B1 (ko) * 1993-03-08 1998-06-01 가와모토 노부히코 전동 파워 스티어링 장치
US6851508B2 (en) * 2000-07-21 2005-02-08 Nsk Ltd. Motor-operated power steering device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4425101A1 (de) * 1993-07-29 1995-02-02 Honda Motor Co Ltd Elektrisch unterstütztes Lenk-Servosystem
WO2001040046A1 (fr) * 1999-12-01 2001-06-07 Krupp Presta Ag Dispositif d'assistance de direction electrique tubulaire a rendement eleve
EP1357012A1 (fr) * 2002-04-24 2003-10-29 Toyoda Koki Kabushiki Kaisha Mécanisme de vis à billes et direction assistée avec un tel mécanisme

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2587093A1 (fr) * 2011-10-28 2013-05-01 Sanyo Denki Co., Ltd. Actionneur linéaire
US9035512B2 (en) 2011-10-28 2015-05-19 Sanyo Denki Co., Ltd. Linear actuator
DE102022120307A1 (de) 2022-08-11 2024-02-22 Schaeffler Technologies AG & Co. KG Fahrwerksaktuator

Also Published As

Publication number Publication date
DE102007006364A1 (de) 2008-08-21
DE102007006364B4 (de) 2010-02-04

Similar Documents

Publication Publication Date Title
DE102009010085B3 (de) Linear-Aktuator
WO2015044034A2 (fr) Machine électrique et unité de raccordement pour machine électrique
DE4407729A1 (de) Elektrisch betriebene Servolenkungseinrichtung
WO2017202565A1 (fr) Direction comprenant un dispositif de réglage et utilisation de la direction avec un dispositif de réglage
EP2960530A1 (fr) Procédé de montage pour une machine électrique dotée d'au moins deux segments de machine
DE102020203483A1 (de) Rotor eines Elektromotors
DE102007006364B4 (de) Antriebseinheit mit einem Axialgetriebe zum Lenken der Räder eines Fahrzeugs
DE102010049999A1 (de) Elektrische Lenkunterstützungsvorrichtung zur Anordnung an einer Lenksäule eines Kraftfahrzeugs
DE102013107378A1 (de) Antriebsvorrichtung
WO2007036315A1 (fr) Unite de commande comportant des moteurs electriques commutes
EP1168591B1 (fr) Moteur à couple limité, notamment moteur d'essuie-glace
EP0734607A1 (fr) Machine electrique, notamment alternateur a courant triphase
DE102008041335A1 (de) Lenkgetriebe und damit ausgestattete Servolenkung
EP3306057B1 (fr) Actionneur pour actionner des volets pour un moteur à combustion interne
EP0542171A1 (fr) Unité motorisée pour engins de traction ferroviaires
WO2023104249A1 (fr) Système d'entraînement électrique comprenant deux machines d'entraînement et une liaison par vis de stator côté boîtier
WO2019197252A1 (fr) Procédé de montage d'un module hybride du groupe motopropulseur d'un véhicule automobile
DE4322981C2 (de) Stellantrieb für die Luftklappe einer Heizungs- oder Klimaanlage für Kraftfahrzeuge
DE29603748U1 (de) Kraftfahrzeug-Antrieb mit einem Elektromotor
DE102018115908A1 (de) Lenkradeinheit zur Erfassung einer Lenkbewegung eines Lenkrades für ein elektromechanisches Lenksystem
DE102020128933A1 (de) Verfahren zur Montage einer Antriebseinheit
DE10159704A1 (de) Fahrzeuglenkung und Betätigungsmotor einer elektromechanischen Fahrzeuglenkung
DE102009024830B4 (de) Elektromechanische Lenkung
DE202005020628U1 (de) Antriebseinheit mit verschachtelten Elektromotoren
DE102009027155A1 (de) Antriebsvorrichtung für eine Scheibenwischanlage

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08708290

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08708290

Country of ref document: EP

Kind code of ref document: A1