WO2007051510A1 - Dispositif conçu pour un systeme de direction d'un vehicule automobile - Google Patents

Dispositif conçu pour un systeme de direction d'un vehicule automobile Download PDF

Info

Publication number
WO2007051510A1
WO2007051510A1 PCT/EP2006/009208 EP2006009208W WO2007051510A1 WO 2007051510 A1 WO2007051510 A1 WO 2007051510A1 EP 2006009208 W EP2006009208 W EP 2006009208W WO 2007051510 A1 WO2007051510 A1 WO 2007051510A1
Authority
WO
WIPO (PCT)
Prior art keywords
steering wheel
steering
elastically deformable
deformable element
steering shaft
Prior art date
Application number
PCT/EP2006/009208
Other languages
German (de)
English (en)
Inventor
Christian Ruetz
Roman Schoepe
Original Assignee
Valeo Schalter Und Sensoren 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 Valeo Schalter Und Sensoren Gmbh filed Critical Valeo Schalter Und Sensoren Gmbh
Publication of WO2007051510A1 publication Critical patent/WO2007051510A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/04—Hand wheels
    • B62D1/10—Hubs; Connecting hubs to steering columns, e.g. adjustable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D15/00—Steering not otherwise provided for
    • B62D15/02—Steering position indicators ; Steering position determination; Steering aids
    • B62D15/021—Determination of steering angle
    • B62D15/0215—Determination of steering angle by measuring on the steering column
    • B62D15/022—Determination of steering angle by measuring on the steering column on or near the connection between the steering wheel and steering column
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
    • B62D6/08—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to driver input torque
    • B62D6/10—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to driver input torque characterised by means for sensing or determining torque
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/22—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
    • G01L5/221—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers to steering wheels, e.g. for power assisted steering

Definitions

  • the invention relates to a device for a steering system of a motor vehicle, with two components, which are connected to each other via an elastically deformable element rotationally movable.
  • Such a device is known from DE 102 56 322 Al. It comprises a steering shaft with two shaft sections, which are connected to each other via a Torsionsstabfeder. Upon application of a torque, the torsion bar spring is twisted so that the two shaft sections are rotated relative to each other. This relative movement can be detected by a torque sensor, wherein the size of the angle of rotation is a measure of the voltage applied to the steering shaft torque.
  • the present invention has the object to provide a device for a steering system of a motor vehicle, with which the final assembly can be facilitated to reduce the mechanical or electrical interfaces to a motor vehicle.
  • This object is achieved in that a component of the aforementioned device by the Steering shaft is formed and that the other component is formed by a steering wheel or by a steering wheel receiver.
  • the device according to the invention has the advantage that the deformation of the elastically deformable element in a region close to the steering wheel can be detected.
  • This area has a large number of mechanical and electrical interfaces which result from the fact that a multiplicity of components such as airbags, operating buttons and operating levers are usually provided here.
  • An assembly of steering shaft, elastically deformable element and steering wheel can then be connected in the final assembly of the motor vehicle in a simple manner via corresponding electrical or mechanical interfaces with the motor vehicle.
  • the device according to the invention has in addition to the simplified mounting option further advantages.
  • a torque sensor when a torque sensor is arranged, the torque applied to a steering wheel can be detected in a region near the steering wheel. This means that this detection is not affected by the torsion of the relatively long steering shaft sections.
  • the steering shaft can build relatively slim in a steering wheel remote area and does not require additional installation space for parts of a torque sensor.
  • the device according to the invention also makes it possible to combine a torque sensor and a rotation angle sensor into a compact unit, as described in a simultaneously filed German patent application "Device for assembly in a steering system of a motor vehicle" (file number: DE 10 2005 053 180.6) of the same Applicant , The disclosure of this application is hereby incorporated by reference.
  • the term "steering wheel mount” used in this application is understood to mean the element which is suitable for determining the position of the steering wheel.
  • the Steering wheel can also be described with the term “steering wheel hub”.
  • the steering wheel receptacle is usually integrally formed with the steering wheel (eg., The steering wheel receptacle is formed by a casting, which is then foamed).
  • the steering wheel receptacle can also be provided separately.
  • the steering wheel receptacle may also have an area extending in the direction of the steering shaft. It is crucial that the steering shaft in the region of the elastically deformable element does not have to be broken down into different shaft sections.
  • the elastically deformable element is rod-shaped and twisted when a torque is applied. With such a rod-shaped element sufficiently large angles of rotation can be detected. At the same time, a mechanically stable connection between the steering shaft and the steering wheel or the steering wheel receptacle can be created.
  • the elastically deformable element is connected to each of the components via a positive connection in the direction of rotation. This ensures that the relative movement between the steering shaft and the steering wheel or steering wheel seat is based solely on a deformation of the elastically deformable element and is not superimposed by additional relative movements.
  • the positive connection may have interlocking external gears and internal gears. Such a connection has the advantage that in a reliable manner high torques are transmitted, at the same time an axial displacement is ensured, which brings advantages in terms of the mounting options discussed below.
  • the positive connection can also have pinning, whereby the elastically deformable element in the longitudinal direction of one of the components, for example on the steering shaft, can be secured.
  • the elastically deformable element is supported by an additional pivot bearing.
  • a buckling of an elongated elastically deformable element can be avoided.
  • the steering wheel can be stored precisely and largely insensitive to vibrations. This improves the haptic feedback that a driver of a motor vehicle receives when guiding the steering wheel.
  • the pivot bearing is designed as a ball bearing, needle roller bearings or roller bearings, the elastically deformable element and thus also the steering wheel can be guided with particular precision.
  • the required steering forces remain at least largely unaffected due to the ease of movement of said bearing.
  • the supporting action of the rotary bearing is particularly good when it is arranged adjacent to the connection of the elastically deformable element with one of the components.
  • the elastically deformable element can be supported in areas that are particularly stressed during the introduction or redirection of steering forces.
  • a particularly advantageous embodiment of the invention provides that the elastically deformable element has at least one flexurally elastic portion.
  • a flexurally elastic section is understood here to mean that it does not have to be continuously elastic, ie has to be flexible over its entire length. Rather, the section can also be rigid overall, but articulated flexurally.
  • the flexurally elastic portion on a Be arranged body wherein the flexurally elastic portion is connected to one of the components steering shaft or steering wheel or steering wheel receptacle and the main body with the other of the components steering shaft or steering wheel or steering wheel receptacle.
  • the flexurally elastic portion can be bent relative to the base body so that the body is not or at least insignificantly twisted.
  • the rotational mobility between the steering shaft and steering wheel or steering wheel receptacle is also based on a combination of torsion of the body and bending of the flexurally elastic portion.
  • the flexurally elastic portion is received in a groove formed in the component.
  • a particularly advantageous embodiment of the invention provides that the flexurally elastic portion has at least one, in particular end-mounted material extension region.
  • This material extension region can be initiated in a reliable manner from the steering wheel or from the steering wheel receiver in the elastically deformable element forces or initiated by the elastically deformable element in the steering shaft. It is particularly advantageous if the size of the groove of the component connected to the elastically deformable element is matched to the play-free reception of the flexurally elastic portion, in particular of the material expansion area. This ensures that the flexurally elastic portion deforms in a defined manner. At the same time, a limitation of the maximum deformation path can be created, so that the elastically deformable element is protected against overloading.
  • the steering wheel or the steering wheel receptacle is secured in a direction perpendicular to the plane of rotation of the steering wheel on the elastically deformable element or on the steering shaft.
  • no further support is required for the axial securing of the steering wheel or the steering wheel receiver.
  • the device has stops which prevent deformation beyond a maximum allowable deformation of the elastically deformable element.
  • These stops can be formed on the steering shaft and / or on the steering wheel or steering wheel receiver and cause the forces are not passed through the elastically deformable element, but additionally directly from one component to the other component from a maximum relative rotation. In this way it can be avoided that the elastically deformable element is overstressed and as a result, for example, plastically deformed.
  • the stops correspond with relative angles of rotation of +/- 5 ° to 10 °, preferably 7 °.
  • this ensures that the angular range required for accurate and high-resolution detection of the steering forces is available.
  • the elastically deformable element is not permanently, so plastically deformed.
  • the device comprises parts of a torque sensor and / or a rotation angle sensor, wherein at least one sensor part is non-rotatably connected to the steering shaft or the steering wheel receptacle or the steering wheel, a particularly compact, easily pre-assembled assembly group can be created.
  • the integration of sensor parts in close proximity to the steering wheel it is possible to form the steering shaft compared to conventional torque sensors simpler and more space-saving.
  • the rotation angle sensor and / or the torque sensor may be based on a capacitive, inductive, magnetic or optical principle. For all of the above sensors, the above-mentioned mounting and space advantages arise.
  • the device may also have a housing for receiving manual switches, in particular wiper switches and / or turn signal switches, the housing being designed to be arranged between the steering shaft on the one hand and the steering wheel or steering wheel mount on the other hand. This allows a further, space-saving integration of components.
  • the housing is designed to receive and / or arrange a control circuit board and / or a coil spring and / or a housing cover. In this way, a highly complex assembly can be created whose function can already be checked separately, that is, before installation in a motor vehicle, as far as possible.
  • the invention further relates to methods for mounting a device for a steering system of a motor vehicle.
  • FIG. 1 shows a perspective view of a device according to the invention according to a first embodiment
  • Figure 2 is a perspective view of a device according to the invention according to a second embodiment.
  • Figure 3 is a perspective view of a device according to the invention according to a third embodiment.
  • a device for a steering system of a motor vehicle is designated overall by the reference numeral 2. This has a steering shaft 4 only shown in sections, a steering wheel receiver 6, an elastically deformable element 8 and a total of 10 designated torque sensor.
  • the steering wheel receptacle 6 is part of a steering wheel, not shown.
  • the steering shaft 4 has a longitudinal bore 12 which extends in the longitudinal direction of the steering shaft and in which an end-side section 14 of the elastically deformable element 8 is received without play.
  • a bore 16 is formed, which with a transverse bore 18, which in the Steering shaft 4 is provided, is aligned.
  • a pin 20 is received, which connects the elastically deformable element 8 against rotation with the steering shaft 4.
  • a radially weakened region 22 connects in the direction of the steering wheel receiver 6. This can be tampered by the fact that its diameter is reduced compared to the diameter of the end portion 14. In order to avoid undesirable notch effects, the region 22 seen in the longitudinal direction of the element 8 is relatively long.
  • the region 22 adjoins an annular shoulder 26, which serves as a stop for an inner shell 28 of a rotary bearing 30, designated overall by 30 and designed as a ball bearing.
  • the rotary bearing 30 also has an outer shell 32 which is secured in the axial direction on a formed in the steering shaft 4 paragraph 34.
  • the element 8 can be performed knickêt and accurate in the steering shaft 4.
  • the element 8 has a cylindrical portion 36 which rests without play on the inner shell 28 of the pivot bearing 30.
  • the cylindrical section 36 is adjoined by a section protruding beyond the pivot bearing 30 with external teeth 38. Concentric with the external teeth 38, a central internal thread 40 is provided.
  • the torque sensor 10 comprises a multi-pole magnet ring 42, a stator 44 and a stationary sensor 46.
  • the steering wheel receiver 6 is substantially rotationally symmetrical and has a hollow cylindrical extension 48 extending in the direction of the steering shaft 4.
  • a centrally arranged internal toothing 50 is provided, which is connected to a cylindrical Opening 52 is adjacent.
  • an annular stop surface 54 is provided for a fastening element 56.
  • This has an external thread 58, which is designed to engage in the internal thread 40 of the element 8.
  • the device shown in Figure 1 is mounted as follows. First, a generally designated 60 assembly is provided, which includes the steering shaft 4 and the element 8. The assembly 60 further includes the pin 20 and the pivot bearing 30. Subsequently, the magnetic ring 42 of the torque sensor 10 is pushed onto a receptacle 62 formed at the free end of the steering shaft 4. Subsequently, the stator 44 of the torque sensor 10 is pushed onto a trained on the steering wheel 6 shoulder 64. Then, the steering wheel receiver 6 is pushed together with the stator 44 on the assembly 60, so that the internal teeth 50 with the external teeth 38 is engaged.
  • the fastening element 56 is inserted through the opening 52 of the steering wheel receiver 6, so that the external thread 58 of the fastening element 56 engages with the internal thread 40 of the element 8.
  • the steering wheel receiver 6 is secured to the element 8 in a direction perpendicular to the plane of rotation of the steering wheel, not shown.
  • the device 2 shown in Figure 1 has not visible stops in the selected perspective, with which the allowed by torsion of the element 8 relative movement between the steering wheel 6 and steering shaft 4 is limited to an angular range of +/- 7 °.
  • a steering shaft 4 is also connected to a steering wheel receptacle 6 via an elastically deformable element designated overall by 8.
  • the elastically deformable element 8 has a central base 66, on which an outer toothing 38 is formed.
  • the external teeth 38 engage in a corresponding, formed in the steering shaft 4 internal teeth, so that the base body 66 is rotatably mounted in the steering shaft 4.
  • An annular body 68 connects to the main body 66 in the direction of the steering wheel receiver 6. From this extend in the radial direction outward three flexurally elastic portions 70, 72 and 74. These are mutually angularly offset by 120 °.
  • the flexurally elastic portions 70 to 74 each have, adjacent to the ring body 68, a material weakening region 76, a subsequent section 78 and a material extension region 80.
  • the flexurally elastic portions 70 to 74 are respectively received in radially extending grooves 82 provided in the steering wheel receiver 6.
  • the width of the grooves 82 corresponds to the width of the
  • annular spacer 84 Adjacent to the annular body 68 of the element 8 and to the steering wheel receiver 6, an annular spacer 84 is provided which serves to abut the head 86 of the fastening element 56.
  • This fastening element has a shaft 88, which passes through the ring body 68 and the base body 66 of the element 8.
  • the shaft 88 has an external thread 58 on the end, which engages in an internal thread 40 formed in the steering shaft 4. In this way, the steering wheel receptacle 6 is secured in the axial direction on the steering shaft 4.
  • FIG. 3 shows a further device 300 according to the invention in a pre-assembly position. It comprises an assembly 60, consisting of a steering shaft 4 and an elastically deformable element 8 connected thereto. Also shown is a magnet ring 42 and a housing 88.
  • the housing 88 is designed to accommodate manual switches, namely a turn signal switch 90 and a wiper switch 92 , It has a hollow cylindrical opening 94, which is designed to receive the end of the steering shaft 4.
  • a control board 96 may further be arranged. This has the switches 90 and 92 associated with electronic components.
  • the sensor 46 (see FIG. 1), which cooperates with the magnetic ring 42 and a stator 44 shown on the right in FIG.
  • the housing 88 can be closed by means of a housing cover 98. At this a coil spring 100 is arranged. With the aid of the clock spring 100, electrical signals can be transmitted from the rotating steering wheel (not illustrated) to a stationary electrical connection region 102.
  • the device 300 further includes a right hand illustrated steering wheel receptacle 6 and a fastener 56th
  • the magnetic ring 42 can be pushed onto the end of the steering shaft 4 of the assembly 60. Further, the stator 44 may be connected to the steering wheel receiver 66. After use of the control board 96 in the housing 88, this can be closed by means of the housing cover 98.
  • the pre-assembly groups thus formed can be joined together in the axial direction, wherein the end of the steering shaft 4, the hollow cylindrical opening 94 of the housing 88 passes through.
  • the abovementioned parts are secured in the axial direction in that the fastening element 56, which is supported at one end on the steering wheel receptacle, is connected at the other end to the elastically deformable element 8 in the manner described with reference to FIG.
  • the device 300 is very compact and can be mounted very easily, since all components and groups of components can be joined together in the axial direction.
  • the device 300 described with reference to FIG. 3 may include an additional rotation angle sensor (not illustrated).
  • a rotation angle sensor is described, for example, in EP 1 324 003 A2 or in EP 1 445 172 A1.
  • the evaluation unit assigned to such a rotation angle sensor can also be arranged on the control board 96.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Power Steering Mechanism (AREA)

Abstract

L'invention concerne un dispositif (2) conçu pour un système de direction d'un véhicule automobile, comprenant deux composants qui sont reliés l'un à l'autre par l'intermédiaire d'un élément à déformation élastique (8), de manière à permettre un mouvement rotatif angulaire. Selon l'invention, un composant est constitué de l'arbre de direction, tandis que l'autre composant est constitué d'un volant ou d'un réceptacle de volant (6). Le dispositif selon l'invention comprend également un capteur de couple de rotation (10). La présente invention se rapporte en outre à des procédés de montage dudit dispositif.
PCT/EP2006/009208 2005-11-03 2006-09-22 Dispositif conçu pour un systeme de direction d'un vehicule automobile WO2007051510A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005053181A DE102005053181A1 (de) 2005-11-03 2005-11-03 Vorrichtung für ein Lenksystem eines Kraftfahrzeugs
DE102005053181.4 2005-11-03

Publications (1)

Publication Number Publication Date
WO2007051510A1 true WO2007051510A1 (fr) 2007-05-10

Family

ID=37487472

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/009208 WO2007051510A1 (fr) 2005-11-03 2006-09-22 Dispositif conçu pour un systeme de direction d'un vehicule automobile

Country Status (2)

Country Link
DE (1) DE102005053181A1 (fr)
WO (1) WO2007051510A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009010188A1 (de) * 2009-02-23 2010-08-26 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Kraft-/Drehmomentenaufnehmer zur Lenkungskraftmessung
CN105793139A (zh) * 2014-03-05 2016-07-20 日本精工株式会社 电动式助力转向装置及其组装方法
CN105829190A (zh) * 2014-03-05 2016-08-03 日本精工株式会社 电动式助力转向装置及其组装方法

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Publication number Priority date Publication date Assignee Title
DE102010017850B4 (de) * 2010-04-22 2017-09-14 Leopold Kostal Gmbh & Co. Kg Vorrichtung zur Anordnung an der Lenksäule eines Kraftfahrzeugs
DE102010064145A1 (de) * 2010-08-03 2012-02-09 Continental Teves Ag & Co. Ohg Drehmomentsensoranordnung mit Indexmagnet
FR2966793B1 (fr) * 2010-10-28 2012-10-26 Peugeot Citroen Automobiles Sa Dispositif de retenue, avec debattement, d'un volant de vehicule par rapport a une colonne de direction
DE102013109284B4 (de) * 2013-08-27 2017-04-06 Thyssenkrupp Presta Aktiengesellschaft Lenkwelle für eine Kraftfahrzeuglenkung
DE102013022077A1 (de) 2013-12-23 2015-06-25 Valeo Schalter Und Sensoren Gmbh Gehäuse zur Aufnahme einer Wickelfeder, Wickelfederanordnung, Verfahren zur Herstellung eines solchen Gehäuses, Verfahren zur Herstellung einer solchen Wickelfederanordnung und Kraftfahrzeug mit einer solchen Wickelfederanordnung
DE102015101061A1 (de) 2015-01-26 2016-07-28 Valeo Schalter Und Sensoren Gmbh Gehäuse zur Aufnahme einer Wickelfeder, Wickelfederanordnung, Verfahren zur Herstellung eines solchen Gehäuses, Verfahren zur Herstellung einer solchen Wickelfederanordnung und Kraftfahrzeug mit einer solchen Wickelfederanordnung
DE102016224429A1 (de) 2015-12-22 2017-06-22 Ford Global Technologies, Llc Lenkrad für ein Kraftfahrzeug

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DE10222118A1 (de) * 2001-05-18 2002-11-21 Denso Corp Drehmomentsensor und elektrisches Servolenkungssystem mit Drehmomentsensor
US6517113B1 (en) * 1998-02-04 2003-02-11 S.N.R. Roulements Steering column with torquemeter
US6564653B2 (en) * 2000-10-31 2003-05-20 The Torrington Company Device for measuring torque applied to a turning shaft
US6694828B1 (en) * 1998-02-04 2004-02-24 The Torrington Company Torque sensor for a turning shaft
FR2851979A1 (fr) * 2003-03-06 2004-09-10 Faurecia Ind Colonne de direction a moyens de rattrapage des jeux, et ensemble de direction et vehicule automobile correspondants

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DE4207668A1 (de) * 1992-03-11 1993-09-16 Teves Gmbh Alfred Hydraulische servo-lenkung mit lenkmomentsensor
FR2774470B1 (fr) * 1998-02-04 2000-03-03 Roulements Soc Nouvelle Capteur de couple et colonne de direction pourvue d'un tel capteur
DE19936263B4 (de) * 1999-07-31 2004-06-17 Leopold Kostal Gmbh & Co Kg Einrichtung zum Erfassen von Kenndaten einer Lenkeinrichtung eines Kraftfahrzeuges
DE10144549C1 (de) * 2001-09-10 2003-01-02 Kostal Leopold Gmbh & Co Kg Anordnung bestehend aus einem Lenkrad und einem Torsionsmodul
DE10256322A1 (de) * 2002-11-28 2004-06-09 Valeo Schalter Und Sensoren Gmbh Vorrichtung zum Bestimmen eines auf eine Welle ausgeübten Drehmoments

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US6517113B1 (en) * 1998-02-04 2003-02-11 S.N.R. Roulements Steering column with torquemeter
US6694828B1 (en) * 1998-02-04 2004-02-24 The Torrington Company Torque sensor for a turning shaft
US6564653B2 (en) * 2000-10-31 2003-05-20 The Torrington Company Device for measuring torque applied to a turning shaft
DE10222118A1 (de) * 2001-05-18 2002-11-21 Denso Corp Drehmomentsensor und elektrisches Servolenkungssystem mit Drehmomentsensor
FR2851979A1 (fr) * 2003-03-06 2004-09-10 Faurecia Ind Colonne de direction a moyens de rattrapage des jeux, et ensemble de direction et vehicule automobile correspondants

Cited By (9)

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Publication number Priority date Publication date Assignee Title
DE102009010188A1 (de) * 2009-02-23 2010-08-26 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Kraft-/Drehmomentenaufnehmer zur Lenkungskraftmessung
CN105793139A (zh) * 2014-03-05 2016-07-20 日本精工株式会社 电动式助力转向装置及其组装方法
CN105829190A (zh) * 2014-03-05 2016-08-03 日本精工株式会社 电动式助力转向装置及其组装方法
EP3081459A4 (fr) * 2014-03-05 2017-01-25 NSK Ltd. Dispositif de direction assistée électrique et son procédé d'assemblage
EP3081458A4 (fr) * 2014-03-05 2017-01-25 NSK Ltd. Dispositif de direction assistée électrique et procédé pour son assemblage
JPWO2015133168A1 (ja) * 2014-03-05 2017-04-06 日本精工株式会社 電動式パワーステアリング装置及びその組立方法
JPWO2015133167A1 (ja) * 2014-03-05 2017-04-06 日本精工株式会社 電動式パワーステアリング装置及びその組立方法
US10000227B2 (en) 2014-03-05 2018-06-19 Nsk Ltd. Electric power steering device and method for assembling the same
US10099718B2 (en) 2014-03-05 2018-10-16 Nsk Ltd. Electric power steering device and method for assembling the same

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