WO2004076261A1 - Mecanisme de direction pour une servocommande electrique dans des vehicules - Google Patents

Mecanisme de direction pour une servocommande electrique dans des vehicules Download PDF

Info

Publication number
WO2004076261A1
WO2004076261A1 PCT/EP2004/001912 EP2004001912W WO2004076261A1 WO 2004076261 A1 WO2004076261 A1 WO 2004076261A1 EP 2004001912 W EP2004001912 W EP 2004001912W WO 2004076261 A1 WO2004076261 A1 WO 2004076261A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
steering gear
gear according
steering
housing part
Prior art date
Application number
PCT/EP2004/001912
Other languages
German (de)
English (en)
Inventor
Norbert Hettstedt
Original Assignee
Schmitterchassis 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 Schmitterchassis Gmbh filed Critical Schmitterchassis Gmbh
Publication of WO2004076261A1 publication Critical patent/WO2004076261A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D3/00—Steering gears
    • B62D3/02—Steering gears mechanical
    • B62D3/12—Steering gears mechanical of rack-and-pinion type
    • 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
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/20—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application
    • B62D5/22—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application for rack-and-pinion type

Definitions

  • the invention relates to a steering gear for a motor vehicle steering system with electric drive means for increasing the steering force (so-called electric power steering or electric steering).
  • the steering force is transferred via a drive pinion to a rack that is in engagement with it and surrounded by an elongated tubular housing! and is led.
  • the invention has for its object to reduce the manufacturing and / or material costs for the housing surrounding the rack in a steering gear for electric power steering systems in motor vehicles.
  • housing tubes of cylindrical tube quality that are not formed in one piece are used for the transmission housing, but rather tubular housing composed of several parts.
  • the housing parts can be produced from sheet metal, in particular sheet steel, and formed by deep drawing into the shell-shaped and elongated housing parts used according to the invention. Two or more of these shell shells are over their Longitudinal edges assembled so that there is a cavity closed in the longitudinal direction. This can have a rounded or angular shape in cross section.
  • the stacked housing part shells must be firmly connected to one another at their edges.
  • optional inventive designs consist in connecting the longitudinal edges of adjoining shells to one another by longitudinal welding. Fusion welding with a high energy density (for example laser welding) can be considered as a suitable welding method. It is also conceivable to use joining methods with the aid of molten additional metals (solders), such as brazing, to form the longitudinal seams for the purpose of connecting the partial housing shells.
  • the longitudinal edges of adjoining housing part shells can be connected to one another by forming-joining (for example flanging).
  • the tubular, elongated steering gear housing 1 is designed with a cross section with a rectangular basic shape. This is composed of a first housing part shell 2 and a second housing part shell 3, each of which forms one half of the housing 1. They are placed on top of one another via their respective outwardly curved edges 4 and are firmly connected there by means of a longitudinal weld 5 running in the longitudinal direction (perpendicular to the drawing surface in the drawing).
  • the design according to Figure 2 differs from that according to Figure 1 essentially in that the two housing part shells 2, 3 complement each other to form a circular cylindrical shape.
  • the lower is provided with an outwardly angled or cranked edge 6, which partially covers the straight edge 7 of the upper housing part shell 2, which is opposite in the transverse direction, from the outside.
  • the longitudinal weld seam 5 is formed in the longitudinal gap formed between the two edges 6, 7.
  • the housing 1, which is divided in two in the longitudinal direction, is designed with a shape which allows the inclusion of a pinion housing (not shown) for the drive pinion of the rack and pinion steering.
  • both the upper and the lower housing part shell 2, 3 are each provided with an opening 7, which can be produced by punching out and which enables the pinion housing or the drive pinion to be inserted for engagement with the rack guided in the (main) housing 1 ,
  • the pinion axis 8 running transversely to the longitudinal direction is indicated by dashed lines.
  • the two housing part shells 2, 3 can also be connected to one another by flanging, in that, according to the drawing example, the lower shell 3 is in turn provided with outwardly bent edges 4 which extend from the receiving edges 9 of the upper shell 2 that run outward like a goiter are included.
  • the receiving edge 9 is bent such that it forms a receiving pocket in cross section with a U-shaped profile.
  • the edge 4 of the lower shell 3, for example, projecting vertically outwards, is inserted therein and firmly embraced, which results in the flare connection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention concerne un mécanisme de direction pour une direction de véhicule comprenant des moyens d'entraînement électriques, destinés à renforcer la force de braquage, laquelle est transmise par l'intermédiaire d'un pignon d'entraînement sur une crémaillère en contact avec celui-ci, cette dernière étant enveloppée, maintenue, et placée dans un logement (1). Au moins deux enveloppes (2, 3) faisant partie du logement et produites individuellement ou séparément forment ou sont assemblées pour former ledit logement (1), lesquelles sont reliées ensemble dans le sens longitudinal du logement ou du tube.
PCT/EP2004/001912 2003-02-26 2004-02-26 Mecanisme de direction pour une servocommande electrique dans des vehicules WO2004076261A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10308520 2003-02-26
DE10308520.3 2003-02-26

Publications (1)

Publication Number Publication Date
WO2004076261A1 true WO2004076261A1 (fr) 2004-09-10

Family

ID=32920636

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/001912 WO2004076261A1 (fr) 2003-02-26 2004-02-26 Mecanisme de direction pour une servocommande electrique dans des vehicules

Country Status (1)

Country Link
WO (1) WO2004076261A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017008990A1 (fr) * 2015-07-13 2017-01-19 Robert Bosch Automotive Steering Gmbh Mécanisme de direction et procédé de montage d'un tel mécanisme de direction

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1422122A (en) * 1972-07-18 1976-01-21 Cam Gears Ltd Rack and pinion units
US4008627A (en) * 1973-07-18 1977-02-22 Cam Gears Limited Rack and pinion units
GB1564760A (en) * 1972-07-18 1980-04-16 Cam Gears Ltd Rack and pinion units
US5730244A (en) * 1996-01-30 1998-03-24 Trw Inc. Lightweight hydraulic power steering gear
EP1145934A2 (fr) * 2000-04-14 2001-10-17 NSK Ltd., Crémaillère creuse
US20020125672A1 (en) * 2000-08-24 2002-09-12 Hyundai Motor Company Steering gear frame

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1422122A (en) * 1972-07-18 1976-01-21 Cam Gears Ltd Rack and pinion units
GB1564760A (en) * 1972-07-18 1980-04-16 Cam Gears Ltd Rack and pinion units
US4008627A (en) * 1973-07-18 1977-02-22 Cam Gears Limited Rack and pinion units
US5730244A (en) * 1996-01-30 1998-03-24 Trw Inc. Lightweight hydraulic power steering gear
EP1145934A2 (fr) * 2000-04-14 2001-10-17 NSK Ltd., Crémaillère creuse
US20020125672A1 (en) * 2000-08-24 2002-09-12 Hyundai Motor Company Steering gear frame

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ZF-SERVOLECTRIK 2/98 der Firma ZF Friedrichshafen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017008990A1 (fr) * 2015-07-13 2017-01-19 Robert Bosch Automotive Steering Gmbh Mécanisme de direction et procédé de montage d'un tel mécanisme de direction

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