EP1633581A1 - Bras oscillant watt - Google Patents

Bras oscillant watt

Info

Publication number
EP1633581A1
EP1633581A1 EP04739636A EP04739636A EP1633581A1 EP 1633581 A1 EP1633581 A1 EP 1633581A1 EP 04739636 A EP04739636 A EP 04739636A EP 04739636 A EP04739636 A EP 04739636A EP 1633581 A1 EP1633581 A1 EP 1633581A1
Authority
EP
European Patent Office
Prior art keywords
strut
watt
wattage
strut body
longitudinal axis
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Withdrawn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
EP04739636A
Other languages
German (de)
English (en)
Inventor
Uwe Hardtke
Rene Kratz
Stefan Schwarz
Ulrich Zech
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler 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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1633581A1 publication Critical patent/EP1633581A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G9/00—Resilient suspensions of a rigid axle or axle housing for two or more wheels
    • B60G9/02—Resilient suspensions of a rigid axle or axle housing for two or more wheels the axle or housing being pivotally mounted on the vehicle, e.g. the pivotal axis being parallel to the longitudinal axis of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/30—Rigid axle suspensions
    • B60G2200/34—Stabilising mechanisms, e.g. for lateral stability
    • B60G2200/342—Watt linkage

Definitions

  • the invention relates to a wad strut according to the preamble of claim 1.
  • Watt struts are known as a stabilizing body for the chassis of a vehicle.
  • the wattage strut is part of the wattage linkage, which is mainly used in rigid-axle vehicles to reduce lateral movements of the rigid axle.
  • a lever which is rotatably mounted in the middle is mounted, for example, on the differential and is guided on both sides by an equally long wattage strut attached to the car body. With this articulation, only an exact vertical movement of the lever is possible.
  • the lengths of the two wattage struts can differ from one another.
  • a wattage strut which is formed from an elongated strut body as a profile.
  • the strut body is at least axially sectionally open on one side in cross section and joined in the longitudinal direction from at least two profile parts arranged one behind the other in axial extension.
  • the profile parts are partially overlapping in the longitudinal direction and connected to each other in the overlap area.
  • the object of the invention is to provide a wattage strut which can be produced in high quality with little manufacturing effort.
  • a wattage strut is formed by a strut body produced by hydroforming.
  • wattage struts can be shaped with high precision and are only relatively light. Various joining steps are omitted and there are also no corrosion problems that can arise with welded parts. These advantages apply in particular if additional structures, such as a socket for receiving a rubber bearing, in the internal high-pressure forming are formed with '. In addition, a complex geometry of the wattage strut is possible.
  • a left (a) and a right (b) watt strut are shown.
  • the left wadding strut 1 has an elongated, twisted strut body, on one axial end of which a bearing bush 12 and on the other axial end of which a U-shaped end section 11 is arranged.
  • the strut body extends along a longitudinal axis Ll.
  • the bottom of the U-shaped end section 11 is formed by the wattage strut itself.
  • the two legs of the U-shaped end section 11, which point away from the strut body in the direction of the longitudinal axis L1 each have a bore which is provided for fastening to a connecting device which connects the two Watt struts 10, 20 to one another.
  • the cross section of the strut body is approximately rectangular.
  • a surface 16 of the strut body has a first surface section 13 near the bearing bush 12 and a second surface section 15 near the U-shaped end section 11.
  • the strut body is twisted about 90 ° about the longitudinal axis L 1 along the longitudinal axis L 1, so that the surface 13 on the bearing bush 12 is oriented approximately perpendicular to the corresponding surface 15 on the U-shaped end section 11.
  • the strut body Approximately in the middle, the strut body has a knee 14, so that the strut body is angularly spaced there from the longitudinal axis L1.
  • Ib has a similar design and extends along a longitudinal axis L2 with an elongated, twisted strut body, at one axial end of which a bearing bush 22 and at the other axial end of which a U-shaped end section 21 is arranged.
  • the right wattage strut 20 also has a knee 24, so that the strut body on the knee 24 is angularly spaced from the longitudinal axis L2.
  • a twist of the right wattage strut 20 can be seen on the surface 26, which has a surface section 23 on the bearing bush 22 and a surface section 25 on the U-shaped end section 21, which are at a finite angle to one another.
  • the wattage struts 10, 20 have a relatively low weight since they do not require any internal stabilizing elements and there are no joining flanges and the like.
  • 2 shows an exploded view of the two wattage struts 10, 20 with a connecting device 30 in the installation position.
  • the U-shaped end sections 11, 21 are brought together and fastened in the connecting device 30 with a lower shell 31 and an upper shell 32.
  • the two shells 31, 32 encompass the end sections 11, 21 of the two wattage struts 10, 20.
  • Both end sections 11, 21 are articulated on pins in the connecting device 30.
  • the connecting device 30 is finally fastened approximately centrally in the usual way to an axle or a differential, while the outer bearing bushes 12, 22 are provided in the usual manner for mounting car bodies arranged on both sides of a vehicle.
  • wattage struts 10, 20 according to the invention can also have a different geometry.
  • a hollow starting work piece e.g. a pipe or profile section, expanded in a shaping tool by the action of a liquid pressure acting on the inside of the workpiece and forces applied from the outside to the ends of the workpiece.
  • a liquid pressure acting on the inside of the workpiece and forces applied from the outside to the ends of the workpiece.
  • the wall of the starting workpiece lies against the surrounding mold.
  • a suitable axial force acts on the workpiece at the same time as the internal pressure.
  • a workpiece geometry corresponding to this shape is created.
  • Suitable materials that can be processed using this method are all materials with sufficient shape-changing properties, especially all cold-formable materials that are also used in deep drawing or extrusion.
  • the use of light metals, in particular aluminum or, is particularly favorable Aluminum alloys, as this enables further weight savings.
  • the shape change capacity which is relatively low in comparison to steels, and the much greater roughening due to the larger grain size must be taken into account.
  • the use of heat-hardenable alloys is particularly favorable due to the possibility of changing the strength distribution in the workpiece already in the undeformed starting workpiece by simple heat treatment prior to forming, so that the material flow can be significantly influenced during the forming of the (cooled) workpiece.
  • the lower yield stress of aluminum alloys compared to that of steel also offers the possibility of using small additional forces, e.g. generated by an external flow to optimize the material flow and thus the forming process. In this way, highly complex geometries of the preferred wattage struts 10, 20 can be achieved.
  • hydroforming is able to meet the requirements for lightweight vehicle construction in an advantageous manner. Compared to the conventional production of such workpieces, hydroforming offers a number of advantages. It is possible to generate cross-sectional profiles adapted to the load along straight or curved component axes without strengthening or stiffness-reducing joints, while at the same time saving Workpiece material are generated. Furthermore, the production of parts with a high degree of integration, in which joining operations can be saved, accordingly joining flanges can be omitted and tolerance-compensating measures can be dispensed with. In addition, the process can be combined with other machining processes, such as punching and bending under internal pressure. Furthermore, workpieces can be produced without distortion due to welding influences with high dimensional and shape accuracy.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

L'invention concerne un bras oscillant Watt comprenant un corps entretoise allongé, un coussinet de palier (12, 22) disposé à une extrémité axiale, le corps entretoise étant produit par transformation par haute pression interne.
EP04739636A 2003-06-14 2004-06-05 Bras oscillant watt Withdrawn EP1633581A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10326858A DE10326858A1 (de) 2003-06-14 2003-06-14 Wattstrebe
PCT/EP2004/006093 WO2004110796A1 (fr) 2003-06-14 2004-06-05 Bras oscillant watt

Publications (1)

Publication Number Publication Date
EP1633581A1 true EP1633581A1 (fr) 2006-03-15

Family

ID=33520590

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04739636A Withdrawn EP1633581A1 (fr) 2003-06-14 2004-06-05 Bras oscillant watt

Country Status (6)

Country Link
US (1) US20070040345A1 (fr)
EP (1) EP1633581A1 (fr)
JP (1) JP2006527132A (fr)
CA (1) CA2529223A1 (fr)
DE (1) DE10326858A1 (fr)
WO (1) WO2004110796A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005049050B4 (de) * 2005-10-13 2010-12-23 Saf-Holland Gmbh Verfahren zum Herstellen eines Achsenbauteils
US7959168B2 (en) 2006-04-04 2011-06-14 Magna International Inc. Suspension link with integral pivot assembly
US7850182B2 (en) * 2007-09-14 2010-12-14 Hyundai Mobis Co., Ltd. Method of manufacturing control arm using variable curvature extruding process and double-hollow-typed control arm manufactured thereby
EA024298B1 (ru) * 2008-11-12 2016-09-30 Сумитомо Метал Индастриз, Лтд. Рычаг автомобильной подвески и способ его изготовления
DE102010024634A1 (de) * 2010-06-22 2011-12-22 Benteler Automobiltechnik Gmbh Kraftfahrzeuglenker
DE102012104909A1 (de) * 2012-06-06 2013-12-12 Benteler Automobiltechnik Gmbh Querlenker sowie Verfahren zum Herstellen des Querlenkers
DE102014209080B4 (de) * 2014-05-14 2018-05-30 Saf-Holland Gmbh Lenkereinheit und Verfahren zur Herstellung einer Lenkereinheit
DE102016210072B4 (de) * 2016-06-08 2023-12-07 Ford Global Technologies, Llc Radaufhängungseinheit für ein Kraftfahrzeug
JP7313765B2 (ja) 2019-09-30 2023-07-25 ファナック株式会社 ロボット用アーム製造方法およびロボット用アーム

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Publication number Priority date Publication date Assignee Title
DE4419221C1 (de) * 1994-06-01 1995-07-27 Daimler Benz Ag Aufhängung einer Hinterachse
US5561902A (en) * 1994-09-28 1996-10-08 Cosma International Inc. Method of manufacturing a ladder frame assembly for a motor vehicle
DE29506170U1 (de) * 1995-04-14 1995-08-17 Ges. f. Innenhochdruck-Verfahren mbH & Co KG, 73431 Aalen Querlenkeranordnung
US5649719A (en) * 1996-02-23 1997-07-22 The Boler Company. Linkage suspension system
DE19720133B4 (de) * 1996-05-20 2008-04-30 Volkswagen Ag Kraftfahrzeug-Hinterachse und Verfahren zum Herstellen einer Kraftfahrzeug-Hinterachse
GB9626045D0 (en) * 1996-12-14 1997-01-29 Rover Group A vehicle roll stabilising system
DE29704863U1 (de) * 1997-03-17 1997-05-22 Gesellschaft für Innenhochdruckverfahren mbH & Co. KG, 73441 Bopfingen Achsschwinge
AUPO748897A0 (en) * 1997-06-20 1997-07-17 Kinetic Limited Vehicle suspension system
US6019383A (en) * 1998-01-28 2000-02-01 American Axle & Manufacturing, Inc. Suspension link assembly
DE19843825A1 (de) * 1998-09-24 2000-03-30 Volkswagen Ag Verfahren zur Herstellung eines Lenkerarms für das Fahrwerk eines Kraftfahrzeugs
US6209896B1 (en) * 1999-09-28 2001-04-03 Meritor Heavy Vehicle Systems Limited Vehicle suspension attachment assemblies
DE10014603C2 (de) * 2000-03-27 2002-05-02 Progress Werk Oberkirch Ag Stabilisierungsstrebe für ein Fahrwerk eines Fahrzeugs
DE10014581C2 (de) * 2000-03-27 2002-05-02 Progress Werk Oberkirch Ag Stabilisierungsstrebe für ein Fahrwerk eines Fahrzeugs sowie Verfahren zur Herstellung derselben
CA2533724C (fr) * 2003-07-28 2012-05-29 Magna International Inc. Suspension arriere integree au cadre
JP4087765B2 (ja) * 2003-08-26 2008-05-21 三菱製鋼株式会社 車両用高応力スタビライザー
JP4193819B2 (ja) * 2005-06-27 2008-12-10 トヨタ自動車株式会社 車両用懸架装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004110796A1 *

Also Published As

Publication number Publication date
CA2529223A1 (fr) 2004-12-23
JP2006527132A (ja) 2006-11-30
DE10326858A1 (de) 2005-01-13
US20070040345A1 (en) 2007-02-22
WO2004110796A1 (fr) 2004-12-23

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Owner name: DAIMLERCHRYSLER AG

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