EP2464544A1 - Dispositif de direction pour un véhicule automobile présentant un volant et une unité de contact électrique - Google Patents

Dispositif de direction pour un véhicule automobile présentant un volant et une unité de contact électrique

Info

Publication number
EP2464544A1
EP2464544A1 EP10754438A EP10754438A EP2464544A1 EP 2464544 A1 EP2464544 A1 EP 2464544A1 EP 10754438 A EP10754438 A EP 10754438A EP 10754438 A EP10754438 A EP 10754438A EP 2464544 A1 EP2464544 A1 EP 2464544A1
Authority
EP
European Patent Office
Prior art keywords
steering
steering wheel
electrical
steering device
contact unit
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.)
Withdrawn
Application number
EP10754438A
Other languages
German (de)
English (en)
Inventor
Delf Neumann
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.)
Takata AG
Original Assignee
Takata 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 Takata AG filed Critical Takata AG
Publication of EP2464544A1 publication Critical patent/EP2464544A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/027—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems between relatively movable parts of the vehicle, e.g. between steering wheel and column

Definitions

  • Steering device for a motor vehicle with a steering wheel and a
  • the invention relates to a steering device for a motor vehicle with a steering wheel and an electrical contact unit according to the preamble of claim 1.
  • the present invention is therefore based on the object to provide a steering device for a motor vehicle, which avoids high heat development in or on the steering wheel. This object is achieved by a steering device with the features of claim 1. Embodiments of the invention are specified in the subclaims.
  • the present invention contemplates providing at least one temperature generating portion of an electronic control unit (ECU) for controlling one or more of the electric and electronic components of a steering wheel out of the steering wheel into an electrical contact unit of the steering apparatus
  • the electrical contact unit has a stator and a rotor, and that the electronic control unit or at least one temperature-generating part thereof is integrated into the rotor of the electrical contact unit
  • at least one temperature-generating electronic component for signal processing and / or signal transmission of the electronic control unit, or the electronic control unit is connected to the rotor, either directly or indirectly via a support purity in total, shifted in the rotor of an electrical contact unit.
  • Another advantage of integrating parts of the electronic control unit into the rotor is that the multiplicity of interconnections between the electronic control unit and complex actuator technology (such as for superposition steering) do not have a flexible one Leaders must be led.
  • the rotor has an annular support on which the electronic control unit or at least one temperature-generating part thereof is arranged.
  • the annular carrier is, for example, disc-shaped. The rotor is rotated during a rotation of the steering wheel.
  • the electrical contact unit has means for heat dissipation.
  • Heat dissipation takes place, for example, through a housing of the electrical contact unit.
  • This serves in addition to the protection and the leadership of a flexible conductor as a heat dissipation and can have cooling fins and / or active cooling elements. It can also be provided in a simple manner large surfaces on the housing of the electrical contact unit or Temperaturableit vom for temperature dissipation.
  • means for temperature absorption and dissipation be provided, for example in the form of cooling fins or cooling slots.
  • the electrical contact unit comprises a cover element through which the steering shaft or a steering shaft stub of the steering shaft or a coupling element coupled to the steering shaft protrudes, wherein the cover element means for dissipating heat which is provided by the electronic control unit or at least one temperature-generating part thereof.
  • the individual elements are arranged in one embodiment and optimized in their function and matched to each other, that upon rotation of the steering wheel and thus rotatably connected rotor there is an additional ventilation of the electrical contact unit and so the heat generation is further reduced.
  • An electrical contact unit is a component that serves to electrically connect one or more electrical or electronic components arranged in a steering wheel with one or more electrical or electronic components not arranged in the steering wheel.
  • a component not arranged in the steering wheel can also be a power source for a component arranged in the steering wheel.
  • An electrical contact unit comprises a flexible conductor, for example in the form of a coil spring, which electrically couples a stator of the contact unit to a rotor of the contact unit, wherein both signals and energy can be transmitted by the electrical coupling. By means of the flexible conductor signals and / or energy can be transmitted during a relative movement between the rotor and stator.
  • the rotor and the flexible conductor are arranged in an embodiment with respect to the axis of rotation of the steering shaft of the steering wheel axially one behind the other.
  • the rotor and the flexible conductor are arranged successively in the radial direction with respect to the axis of rotation of the steering shaft of the steering wheel, the flexible conductor being surrounded radially on the outside by the rotor.
  • a superposition drive is integrated in the steering wheel and the control unit is designed to control at least the superposition drive.
  • Figure 1 is an exploded view of a first embodiment of a
  • Figure 2 is a sectional view of the assembled steering wheel of Figure 1;
  • Figure 3 is an exploded view of a second embodiment of a
  • Control unit is integrated
  • FIGS. 1 and 2 shows a sectional view of the assembled steering wheel of FIG. 3.
  • the control device shown in FIGS. 1 and 2 comprises a steering wheel 1 and an electrical contact unit 2.
  • the steering wheel 1 comprises a steering wheel rim 1 1, a plurality of spokes 12 and a steering wheel hub 13, which serves for connection of the steering wheel 1 with a steering shaft 3 of the vehicle.
  • a superposition drive 4 is integrated in the steering wheel 1, which comprises an actuator in the form of an electric motor 41 and a superposition gear with a drive worm 42 and a worm wheel 43.
  • the drive worm 42 is driven by the electric motor 41.
  • the worm wheel 43 is coupled to the steering shaft 3.
  • the superposition drive 4 is suitable and configured to superimpose a further steering angle on a steering angle input by a driver.
  • a housing and bearing elements and fastening means of the superposition gear 42, 43 and the drive motor 41 are not shown for clarity.
  • the electrical contact unit 2 comprises a stator 21, a flexible conductor 22, a rotor 23 and an upper cover 24.
  • the stator 21 is stationary, that is fixed non-rotatably, for example on a steering column cover or on a steering column assembly arranged immediately behind the steering wheel 1. It is in the illustrated embodiment, but not necessarily, a hollow cylinder and includes a circular in cross section outer wall 21 1 and a steering wheel 1 facing away from the lower lid 212.
  • the cover 212 has a central recess through which a provided with a toothing 41 steering shaft stub 4 of the steering shaft 3 protrudes.
  • a cylindrical cavity is provided, which serves to receive the flexible conductor 22 and the rotor 23 and which can be closed by the upper cover 24 on the steering wheel side facing the electrical contact unit 2.
  • the flexible conductor 22 is formed for example as a winding spring. It is connected at one end or end region by means of one or more contact points, not shown, electrically and signal-conducting with the stator 21. At its other end or end region, it is electrically and signal-conducting connected to the rotor 23 at one or more contact points (also not shown).
  • the flexible conductor 22 makes it possible to transmit energy and / or signals between components electrically coupled to the stator and components electrically coupled to the rotor during a relative movement of the components. In this case, the flexible conductor 22 is also moved due to its flexibility during a relative movement between the stator 21 and rotor 23.
  • the exact design of the flexible conductor 22 is not essential to the present invention.
  • the illustrated flexible conductor 22 is only to be understood as an example.
  • the rotor 23 which, as explained, is electrically and signal-connected to the flexible conductor 22 by means of one or more contact points (not shown), comprises a ring-shaped and disk-shaped carrier 231 in the illustrated embodiment.
  • Electronic components for signal processing and / or signal transmission are arranged on the latter. representing an electronic control unit 232 (ECU).
  • ECU electronice control unit
  • the electronic components are arranged exclusively on the side facing away from the steering wheel 1 side of the annular support 231 in the illustrated embodiment.
  • the electronic components can also be arranged on the other side and / or both sides of the carrier 231.
  • the annular support 231 may be provided with integrated electrical lines corresponding to a printed circuit board.
  • the annular support 231 further comprises an electrical connection point 233, for example in the form of an electrical connection
  • the annular support 231, the Electronic control unit 232 and the electrical connection point 233 thereby form a subassembly, which is also referred to as ECU unit.
  • the contact unit 2 serves insofar as the electrical supply of the illustrated motor 41 of the superposition steering.
  • the contact unit 2 can also serve the power supply and / or signaling connection of further, arranged in the steering wheel 1 electrical consumers, such as electrical controls in the steering wheel and of electrical components of an airbag module.
  • the electrical connection point 233 is accordingly designed to provide an electrical connection with such further electrical consumers, including, for example, plug-in receptacles for plugs of further electrical consumers are provided.
  • the control unit 232 is used to electrically control one or more arranged in the steering wheel 1 electrical components, such as the electrical control of the superposition steering and the electrical control of electrical controls of the steering wheel. In principle, the control unit 232 can also assume control tasks with regard to vehicle components which are not arranged in the steering wheel.
  • the control unit 232 may be designed and provided to control a power steering, which is coupled to the steering shaft 3 outside of the steering wheel 1.
  • the upper cover 24 closes the electrical contact unit 2. It has an edge-side opening 241, which is the implementation of the electrical connection point
  • Embodiment with the plug 41 1 of the drive motor 41 is connected.
  • Lid 24 further includes a central opening 242 which is provided with cooling fins 243 in FIG.
  • slats or slots are provided. These run in a variant not parallel to the axis of rotation of the steering shaft 3, but inclined thereto, to provide an improved cooling effect. It should be noted that the diameter of the central opening 242, as can be seen in particular from the sectional view of Figure 2, larger than the diameter of the steering shaft 3 and a coupling with the steering shaft stub 4 part of the worm wheel 43. This allows that by the cooling fins 43 can be effectively dissipated heat.
  • Figures 3 and 4 show an embodiment which differs from the embodiment of Figures 1 and 2, in particular by the arrangement of the flexible conductor 22 and the rotor 23. While in the embodiment of Figures 1 and 2, the rotor 23 and the flexible conductor 22 in the direction of the axis of rotation of the steering shaft 3 are arranged one behind the other, in the embodiment of Figures 3 and 4, the rotor 23 'and the flexible conductor 22 radially with respect to arranged the rotation axis of the steering shaft 3 in succession. The flexible conductor 22 is thereby surrounded radially on the outside by the rotor 23 '.
  • the ECU unit In the first case ( Figures 1 and 2), the ECU unit is thus placed as a ring around the steering shaft 3 and directly on the conduction band of the flexible conductor 22 and, for example, firmly connected thereto. In the second case ( Figures 3 and 4), the ECU unit is placed as a ring radially outward around the conduction band of the flexible conductor 22 and, for example, firmly connected thereto.
  • cooling fins 243 ' are provided at the edge of the lid 24'. In addition, however, such cooling fins may also be formed at the central opening 242.
  • stator 21 is designed as a disc and does not form a housing.
  • the invention is not limited in its execution to the illustrated embodiments.
  • the steering device according to the invention be formed without superposition steering.
  • Their electric motor is merely an example of an integrated into a steering wheel electrical component whose operation is controlled by a control unit.
  • the control unit is integrated in the stator instead of in the rotor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Steering Mechanism (AREA)
  • Steering Controls (AREA)

Abstract

L’invention concerne un dispositif de direction pour un véhicule automobile, qui présente un volant (1) et une unité de contact électrique (2) servant au guidage de lignes pour le raccordement électrique d’au moins un composant électrique ou électronique agencé dans le volant (1) ou sur celui-ci à un composant électrique ou électronique non agencé dans le volant (1) ou sur celui-ci. Au moins un élément, générant une température, d’une unité de commande électronique (232) destinée à commander au moins un élément électrique ou électronique du volant (1) est intégré dans l’unité de contact électrique (2). Selon l’invention, l’unité de contact électrique (2) présente un stator (21) et un rotor (23, 23') et l’unité de commande électronique (232) ou au moins un élément générant une température sont intégrés dans le rotor (23, 23') de l’unité de contact électrique (2).
EP10754438A 2009-08-14 2010-08-12 Dispositif de direction pour un véhicule automobile présentant un volant et une unité de contact électrique Withdrawn EP2464544A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009037672.0A DE102009037672B4 (de) 2009-08-14 2009-08-14 Lenkvorrichtung für ein Kraftfahrzeug mit einem Lenkrad und einer elektronischen Kontakteinheit
PCT/EP2010/061763 WO2011018500A1 (fr) 2009-08-14 2010-08-12 Dispositif de direction pour un véhicule automobile présentant un volant et une unité de contact électrique

Publications (1)

Publication Number Publication Date
EP2464544A1 true EP2464544A1 (fr) 2012-06-20

Family

ID=43332554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10754438A Withdrawn EP2464544A1 (fr) 2009-08-14 2010-08-12 Dispositif de direction pour un véhicule automobile présentant un volant et une unité de contact électrique

Country Status (6)

Country Link
US (1) US20120138404A1 (fr)
EP (1) EP2464544A1 (fr)
JP (1) JP2013501673A (fr)
CN (1) CN102470809A (fr)
DE (1) DE102009037672B4 (fr)
WO (1) WO2011018500A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160016524A1 (en) * 2014-05-23 2016-01-21 Symtec, Inc. System for providing electrical conductor pathway to a vehicle steering wheel
CN112424051B (zh) 2018-05-30 2023-05-02 乔伊森安全系统收购有限责任公司 用于方向盘总成的集成电子控制单元
DE102018125868B4 (de) 2018-10-18 2022-02-03 Danfoss Power Solutions Aps Lenkhandradanordnung
US11254269B2 (en) 2018-12-18 2022-02-22 Symtec, Inc. Clock spring steering wheel power assembly
CN114056417A (zh) * 2021-12-11 2022-02-18 西安合众思壮导航技术有限公司 一种用于方向盘系统的无线通讯方法
CN114735070A (zh) * 2022-05-09 2022-07-12 浙江吉利控股集团有限公司 一种包含新型线束转换装置的方向盘

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JPH01145250A (ja) * 1987-08-28 1989-06-07 Toyoda Gosei Co Ltd ステアリングホイール
GB2295590B (en) * 1994-11-30 1999-01-20 Nsk Ltd Electric power steering apparatus
US5810606A (en) * 1995-06-07 1998-09-22 Methode Electronics, Inc. Articulating connector transmission system for signal data and power
JPH0917542A (ja) * 1995-06-26 1997-01-17 Alps Electric Co Ltd 回転コネクタ
FR2738677B1 (fr) * 1995-09-07 1997-10-24 Valeo Electronique Contacteur tournant a ruban court, notamment pour vehicules automobiles
JPH10241504A (ja) * 1997-02-24 1998-09-11 Yazaki Corp ステアリング用信号伝達装置
DE19910131C2 (de) * 1999-03-01 2002-08-29 Takata Petri Ag Einrichtung zur Übertragung elektrischen Stroms
DE19914176A1 (de) * 1999-03-29 2000-10-05 Eaton Corp Lenkrad, insbesondere für ein Kraftfahrzeug
JP2002272019A (ja) * 2001-03-08 2002-09-20 Sumitomo Wiring Syst Ltd ハンドル部の給電及び送受信装置
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Also Published As

Publication number Publication date
JP2013501673A (ja) 2013-01-17
DE102009037672A1 (de) 2011-02-17
CN102470809A (zh) 2012-05-23
WO2011018500A1 (fr) 2011-02-17
US20120138404A1 (en) 2012-06-07
DE102009037672B4 (de) 2014-01-16

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