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WO2018192601A1 - Stabilisateur de roulis pour véhicule automobile - Google Patents

Stabilisateur de roulis pour véhicule automobile Download PDF

Info

Publication number
WO2018192601A1
WO2018192601A1 PCT/DE2018/100107 DE2018100107W WO2018192601A1 WO 2018192601 A1 WO2018192601 A1 WO 2018192601A1 DE 2018100107 W DE2018100107 W DE 2018100107W WO 2018192601 A1 WO2018192601 A1 WO 2018192601A1
Authority
WO
WIPO (PCT)
Prior art keywords
distal end
base body
roll stabilizer
torsion bar
collar
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.)
Ceased
Application number
PCT/DE2018/100107
Other languages
German (de)
English (en)
Inventor
Markus Klinger
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and 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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of WO2018192601A1 publication Critical patent/WO2018192601A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
    • B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
    • B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
    • B60G21/055—Stabiliser bars
    • B60G21/0551—Mounting means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/14—Suspension elements of automobile vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/122—Mounting of torsion springs
    • B60G2204/1224—End mounts of stabiliser on wheel suspension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/40—Constructional features of dampers and/or springs
    • B60G2206/42—Springs
    • B60G2206/427—Stabiliser bars or tubes

Definitions

  • Roll stabilizer for a motor vehicle comprising a torsion bar having a first and second distal end, wherein the two distal ends are tubular and are provided to at least partially axially receive a main body of a respective weld bushing.
  • each wheel axle of a motor vehicle on a roll stabilizer, which operates on the torsion bar principle.
  • the roll stabilizer is arranged substantially parallel to the vehicle axle and at both ends via a respective
  • Coupling rod connected to the suspension is provided to stabilize the body structure against unwanted rolling movements about the longitudinal axis of the motor vehicle. Such rolling movements occur, for example, when cornering of the motor vehicle.
  • the rolling motion of the motor vehicle is influenced by the roll stabilizer by the compression movement of the left and right wheel suspension of an axle is coupled together using the roll stabilizer.
  • DE 10 2013 205 903 A1 discloses a roll stabilizer for a vehicle.
  • the roll stabilizer comprises an actuator for generating a torsional moment about a torsion axis, wherein the actuator has a housing arrangement, and wherein the roll stabilizer has at least one stabilizing component, in particular a torsion bar spring.
  • the stabilization components are usually powder-coated.
  • a weld-in bushing with a flange is also known, via which the weld-in bushing can be welded to a carrier element.
  • the weld-in bushing has at least one side facing the carrier element during welding, at least one gas emerging through the gas flowing through the recess.
  • a roll stabilizer for a motor vehicle comprises a torsion bar having a first and a second distal end, the two distal ends being tubular and intended to at least partially axially receive a main body of a respective weld bush, wherein the respective weld bushing further comprises a collar, which comes to rest axially against the respective distal end, wherein the collar is weldable to the respective distal end, wherein the main body of the respective weld bushing circumferentially has a Rändelprofil, wherein the main body is axially pressed into the respective distal end to form a and frictional Rändelpress said to form, and wherein radially formed between the base body and the inner diameter of the respective distal end vent grooves for discharging a gas generated during welding.
  • the term knurl dressing is basically a shaft-hub connection to understand in which the main body of the weld bush, the shaft and the respective distal end of the torsion bar represents the hub.
  • the advantage of a knurling press fit is the ease of manufacture, the lower press-in forces compared to the classic, cylindrical press fit, and the low demands on dimensional tolerances and freedom from backlash.
  • the lower insertion forces allow a higher coverage of the joining partners.
  • the operational stability of the connection can be increased by improved support of the bushing in the pipe and thereby resulting relief of the weld.
  • the knurling profile is to be understood as meaning the toothing produced on the main body of the weld-in bush by means of a knurling process.
  • the knurled profile serves both as a forming tool, as well as a power transmission element.
  • the counter toothing required for the transmission of force is formed in the inner diameter of the respective distal end.
  • the weld bush is frictionally connected by the radial overlap with the torsion bar.
  • the knurling compound is essentially intended to relieve the weld produced in the welding process. In other words, the main body of the weld bushing is within the respective distal end of the Trunnion supported, whereby the forces acting on the weld forces are reduced.
  • the joining forces during the press-fitting process of the welding bushing into the respective distal end are reduced by the geometric design of the knurling profile.
  • this improves the manufacturability of the knurling press dressing, and on the other hand an increase in the overlap between the main body and the respective distal end is possible. Under the overlap is the radial excess of body of the weld bushing and the respective pipe end to understand.
  • a reduced joining force enlargement of the coverage is possible, which in turn has positive effects on the support of the weld and thus on the durability of the compound.
  • vent grooves formed radially between the base body and the inner diameter of the respective distal end ensure adequate ventilation during the welding process.
  • the resulting gases during welding escape to the one in the radial direction to the outside, on the other they escape from the weld root radially into the gap inwards, where they flow into the axial vent grooves and can be discharged in the direction of the tube interior. This ensures compliance with the required weld quality by avoiding pore formation in the weld.
  • the invention includes the technical teaching that the main body is cylindrical, wherein the respective vent grooves are formed in parallel to the main body in distributed on the circumference of the body knurled valleys of the knurled profile.
  • the vent grooves are groove-shaped in the knurled valleys.
  • the outer diameter of the main body is greater than the inner diameter of the respective distal end, wherein at least the inner diameter in the region of the knurl valleys at least partially plastically deformed.
  • the torsion bar made of a first metallic material and the respective welding bush made of a second metallic material, wherein the first metallic material has a lower strength than the second metallic Material.
  • the knurling profile forms a counter-geometry formed essentially complementary to the geometry of the knurl profile in the inner diameter of the respective distal end. In particular, not the entire inner diameter will be plastically deformed to ensure the press fit, since in this case the radial coverage needed for power transmission would be lost.
  • the knurled profile preferably has knurling points, which penetrate into the respective distal end during a press-fitting process of the respective base body in order to form a non-positive connection in the radial direction and a positive connection in the direction of rotation.
  • the material of the respective distal end fills the vent groove partially.
  • the material strengths of the first and second metallic materials can be selected to be similar, so that both the inner diameter of the torsion bar and the knurled profile partially plastically deform during the press-in process and both materials have a material hardening in the contact area.
  • the knurling profile preferably has the form RAA according to DIN 82.
  • RAA knurling profile
  • the knurling tips are spaced apart from one another and being distributed uniformly around the circumference of the basic body.
  • the knurling tips have a height that is substantially the radial difference between the knurling tip and the knurling tip.
  • the knurling valleys have an opening angle, wherein the height of the knurling tip and the opening angle of the knurling valley define the cross-sectional area of the ventilating grooves.
  • a design of the knurled profile with axially parallel grooves is particularly advantageous in the axial pressing of the main body in the respective distal end, since a backlash-free connection with direct power transmission is formed.
  • the collar or flange of the respective welding bushing can be welded to the end face of the respective distal end of the torsion bar by a fusion welding process.
  • a fusion welding process is particularly preferred.
  • the TIG welding process is a relatively fast process and has only little gas and slag formation in the welding process, whereby this process is particularly clean and the torsion bar due to the short heat input. Effect not significantly deformed.
  • the weld can also be produced by a laser welding process, which also has a reduced formation of gas and slag, as well as a reduced heat input.
  • the collar of the respective weld bushing is welded circumferentially at the respective distal end.
  • the torsion bar is coatable after the welding of the respective collar with the respective distal end by means of powder coating.
  • the advantage here is the protection against external influences and chemical stress of the torsion bar interior, in particular corrosion.
  • the coating can additionally improve the sealing effect produced by the welding night.
  • FIG. 1 shows a schematic view of a roll stabilizer according to the invention
  • FIG. 2 shows a schematic partially cutaway perspective view of a first distal end of a torsion bar of the roll stabilizer according to the invention
  • FIG. 3 shows a simplified schematic detail sectional view for illustrating a press-fitting process of a welding bush into the first distal end of the torsion bar;
  • FIG. 4 shows a schematic detail sectional view for illustrating the welding bushing received at the first distal end in the pressed-in state
  • a roll stabilizer 1 for a motor vehicle (not shown here) comprises a torsion bar 2 with first and second distal ends 3a, 3b, wherein the two distal ends 3a, 3b are tubular.
  • the roll stabilizer 1 can also be formed by means of an actuator - not shown here - and two torsion bar halves.
  • the roll stabilizer 1 is arranged transversely to the longitudinal axis of the vehicle and connected at its free ends to wheels or wheel carriers (not illustrated here).
  • FIGS. 2 to 5 each show the left side of the torsion bar 2 with the first distal end 3a.
  • the - not shown - right side of the torsion bar 2 may be formed analogous to the left side, but it can also be provided an alternative embodiment of the second distal end 3b shown in Figure 1.
  • the first distal end 3a of the torsion bar 2 is provided to axially receive a main body 5 of a weld bushing 4, wherein the main body 5 of the shaft of the weld bushing 4, and wherein the weld bushing 4 further comprises a collar 6, the front side of the first distal end 3a comes axially to the plant.
  • the basic body 5, which is illustrated schematically in simplified form, comprises a circumferential knurling profile 7, wherein the base body is pressed into the first distal end 3a in a press-fit direction during the press-fitting operation in order to form a positive and non-positive knurled dressing to build.
  • the knurling profile is designed in the form RAA according to DIN 82 with axially parallel grooves.
  • gases are produced, in particular from anticorrosion coatings or from alloying elements of metallic materials.
  • gases can arise from the welding consumable used and the protective gas, the welding electrode, as well as impurities on the surface of the welding bush or the torsion bar.
  • Vent grooves 8 are formed radially between the main body 5 and the inner diameter of the first distal end 3a for the purpose of discharging a gas produced during welding. Furthermore, the vent grooves 8 are provided to allow escape of air during the press-fitting operation of the weld bushing 4. This additionally leads to a reduction of the required press-in force for the weld bushing 4.
  • the vent grooves 8 are distributed on the circumference of the main body 5. Further, the vent grooves 8 are formed axially parallel to the main body 5. The length of the vent grooves 8 corresponds to the length of the main body 5.
  • Base 5 of the weld bushing 4 to the first distal end 3a of the knurled dressing is relieved of the weld seam 1 1, thereby increasing the fatigue strength of the welded joint.
  • the base body 5 is cylindrical and axially received by the first distal end 3a.
  • the collar 6 is also cylindrical and has a larger outer diameter than the main body 5. Further, the collar 6 is welded by a weld 1 1 with the first distal end 3a. By welding the weld bush 4 over the collar 6, the weld bushing 4 can be welded over a particularly large area and therefore firmly with the torsion bar 2.
  • weld 1 1 is produced, wherein the weld 1 1 is formed circumferentially here and seals a torsion bar interior 14 of the torsion bar 2 against external influences, such as splashing water.
  • the weld seam 1 1 is formed by means of a TIG welding process, wherein the peripheral edges of the collar 6 and of the first distal end 3 a adjacent to the weld seam 1 are chamfered.
  • the weld bushing 4 further has a bore 13 for at least partially receiving at least one - not shown here - fastener, which is connectable to the weld bushing 4, wherein the bore 13 may be formed, for example, as an internally threaded bore det.
  • the base body 5 is shown with the knurled profile 7 in a partial cross-section.
  • the knurled valleys 9 and the knurling tips 10 are formed alternately and uniformly distributed on the circumference of the main body 5.
  • An unequal moderate arrangement of the knurling tips 10 and knurls 9 is also conceivable.
  • the vent groove 8 is groove-shaped and has a substantially triangular cross-sectional area.
  • the outer diameter of the main body 5 is formed larger than the inner diameter of the first distal end 3a.
  • the torsion bar 2 is formed of a first metallic material and the respective weld bush 4 made of a second metallic material.
  • the first metallic material has a lower strength than the second metallic material.
  • the knurling tips 10 penetrate during the pressing process into the material of the torsion bar 2, wherein the inner diameter of the first distal end 3a is at least partially plastically deformed.
  • a frictional connection and in the direction of rotation forms a positive connection between weld bushing 4 and torsion bar 2.
  • the material of the torsion bar 2 fills in the press-fitting the vent groove 8 radially partially.
  • the radial distance between the knurling 9 and the inner diameter of the first distal end 3a is decisive for the venting effect during the press-fitting operation and during the welding operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

L'invention concerne un stabilisateur de roulis (1) pour véhicule automobile, comprenant une barre de torsion (2) présentant une première et une seconde extrémité distale (3a, 3b). Les deux extrémités distales (3a, 3b) sont réalisées sous forme tubulaire et sont conçues pour chacune loger axialement au moins en partie un corps de base (5) d'une douille soudée concernée (4), chaque douille soudée (4) comporte par ailleurs un collet (6) qui vient axialement en appui côté frontal sur l'extrémité distale concernée (3a, 3b), le collet (6) peut être soudé à l'extrémité distale concernée (3a, 3b), le corps de base (5) de chaque douille soudée (4) présente un profil moleté sur toute la circonférence, le corps de base (5) peut être inséré par pression dans l'extrémité distale concernée (3a, 3b) pour réaliser un assemblage par ajustement moleté serré à force, et entre le corps de base (5) et le diamètre intérieur de l'extrémité distale concernée (3a, 3b) sont ménagées des rainures d'aération (8) permettant l'évacuation du gaz produit lors du soudage.
PCT/DE2018/100107 2017-04-20 2018-02-08 Stabilisateur de roulis pour véhicule automobile Ceased WO2018192601A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017108373.1 2017-04-20
DE102017108373.1A DE102017108373A1 (de) 2017-04-20 2017-04-20 Wankstabilisator für ein Kraftfahrzeug

Publications (1)

Publication Number Publication Date
WO2018192601A1 true WO2018192601A1 (fr) 2018-10-25

Family

ID=61249463

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2018/100107 Ceased WO2018192601A1 (fr) 2017-04-20 2018-02-08 Stabilisateur de roulis pour véhicule automobile

Country Status (2)

Country Link
DE (1) DE102017108373A1 (fr)
WO (1) WO2018192601A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7162573B2 (ja) 2019-07-02 2022-10-28 日本発條株式会社 スタビライザ
DE102024203055A1 (de) * 2024-04-03 2025-10-09 Zf Friedrichshafen Ag Aktiv verstellbarer Wankstabilisator

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5785310U (fr) * 1980-11-15 1982-05-26
US4763922A (en) * 1984-07-31 1988-08-16 Nhk Spring Co., Ltd. Axle supporting rod for motor vehicle
EP0486876A2 (fr) * 1990-11-19 1992-05-27 NIPPON PISTON RING CO., Ltd. Elément de machine avec au moins une pièce d'assemblage emmanchée sous pression sur un arbre
DE102013205903A1 (de) 2013-04-04 2014-10-09 Schaeffler Technologies Gmbh & Co. Kg Fahrwerksaktuatorvorrichtung für ein Fahrzeug
DE102014007306A1 (de) * 2014-05-17 2014-12-04 Daimler Ag Verfahren zum Verbinden mindestens zweier Bauteile und Anordnung mindestens zweier mittels des Verfahrens miteinander verbundener Bauteile
DE102015009604A1 (de) 2015-07-24 2016-03-24 Daimler Ag Einschweißbuchse sowie Verfahren zum Verschweißen einer solchen Einschweißbuchse
DE102014219605A1 (de) * 2014-09-26 2016-03-31 Volkswagen Ag Stirnverschraubte Anbindung eines Stabilisators an einer Mehrlenkerachse
KR20160059722A (ko) * 2014-11-19 2016-05-27 현대자동차주식회사 상용차량의 현가장치

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5785310U (fr) * 1980-11-15 1982-05-26
US4763922A (en) * 1984-07-31 1988-08-16 Nhk Spring Co., Ltd. Axle supporting rod for motor vehicle
EP0486876A2 (fr) * 1990-11-19 1992-05-27 NIPPON PISTON RING CO., Ltd. Elément de machine avec au moins une pièce d'assemblage emmanchée sous pression sur un arbre
DE102013205903A1 (de) 2013-04-04 2014-10-09 Schaeffler Technologies Gmbh & Co. Kg Fahrwerksaktuatorvorrichtung für ein Fahrzeug
DE102014007306A1 (de) * 2014-05-17 2014-12-04 Daimler Ag Verfahren zum Verbinden mindestens zweier Bauteile und Anordnung mindestens zweier mittels des Verfahrens miteinander verbundener Bauteile
DE102014219605A1 (de) * 2014-09-26 2016-03-31 Volkswagen Ag Stirnverschraubte Anbindung eines Stabilisators an einer Mehrlenkerachse
KR20160059722A (ko) * 2014-11-19 2016-05-27 현대자동차주식회사 상용차량의 현가장치
DE102015009604A1 (de) 2015-07-24 2016-03-24 Daimler Ag Einschweißbuchse sowie Verfahren zum Verschweißen einer solchen Einschweißbuchse

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DEUTSCHES INSTITUT FÜR NORMUNG: "DIN 82 Rändel", 31 January 1973 (1973-01-31), XP055470670, Retrieved from the Internet <URL:http://www.iso-iran.ir/standards/din/DIN%2082-1973%20,%20R%C3%A4ndel.pdf> [retrieved on 20180425] *

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