EP2013496A1 - Articulation a rotule - Google Patents

Articulation a rotule

Info

Publication number
EP2013496A1
EP2013496A1 EP07722276A EP07722276A EP2013496A1 EP 2013496 A1 EP2013496 A1 EP 2013496A1 EP 07722276 A EP07722276 A EP 07722276A EP 07722276 A EP07722276 A EP 07722276A EP 2013496 A1 EP2013496 A1 EP 2013496A1
Authority
EP
European Patent Office
Prior art keywords
ball
bearing
joint
ball joint
housing
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Withdrawn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
EP07722276A
Other languages
German (de)
English (en)
Inventor
Hans-Gerd Brunneke
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.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen 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 ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of EP2013496A1 publication Critical patent/EP2013496A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • F16C11/0604—Construction of the male part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32606—Pivoted
    • Y10T403/32631—Universal ball and socket
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32606—Pivoted
    • Y10T403/32631—Universal ball and socket
    • Y10T403/32672—Swiveled ball parts or seat
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32606—Pivoted
    • Y10T403/32631—Universal ball and socket
    • Y10T403/32681—Composite ball
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32606—Pivoted
    • Y10T403/32631—Universal ball and socket
    • Y10T403/32721—Elastomeric seat
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32606—Pivoted
    • Y10T403/32631—Universal ball and socket
    • Y10T403/32737—Universal ball and socket including liner, shim, or discrete seat

Definitions

  • the invention relates to a ball joint, in particular for the suspension of a motor vehicle, with a ball stud, which is equipped with a pivotable and rotatably mounted in a housing first spherical bearing surface, wherein between the first spherical bearing surface and another, mounted in the housing and with the Spherical connected spheroidal bearing surface a rolling bearing is present.
  • Ball joints such as those used in particular for suspension in motor vehicles, are sometimes exposed to extreme loads that may consist of mechanical stresses or caused by thermal or chemical influences. Their structural design today takes place in such a way that under normal circumstances they do not need to be replaced and not maintained during the life of a motor vehicle.
  • Ball joints are acted upon in motor vehicles with radial and axial forces, which can sometimes take on considerable proportions.
  • the ball stud must allow a rotational movement about its center axis.
  • the torques or friction torques to be recorded in the ball joint also increase. This has a disadvantageous effect, in particular in the steering area, since increased forces have to be applied in order to ensure steerability of the motor vehicle.
  • lead high torque and friction within the ball joint to wear and to the risk that legal requirements regarding the steering return can not be met.
  • a ball stud which is equipped with a pivotable and rotatably mounted in a housing first spherical bearing surface, wherein between the first spherical bearing surface and a further, mounted in the housing and connected to the ball pin spherical bearing surface a rolling bearing is present.
  • rolling bearings single-row deep groove ball bearings are used according to the disclosure of the cited documents.
  • the ball joint in these solutions consists of two separate individual parts, wherein between the joint ball parts, the designated rolling bearing is added. With such a ball joint, a rotational movement of the ball pin can be implemented with very low friction torques due to the low rolling friction of the roller bearings.
  • the ball joints known from the cited documents also have disadvantages.
  • these are in each case metallic, spheroidal bearing surfaces, which are mounted directly in a likewise made of metal housing. Due to the metal / metal contact pairing, vibrations introduced directly from the roadway via the wheel suspension and the ball joint located therein, ie without damping, are transmitted to the components of the motor vehicle receiving the ball joint and are therefore noticeable to the vehicle driver. However, this is a loss of comfort, which is unacceptable.
  • the bearing pairing used it is necessary to regularly maintain the ball joints. In the present case, the maintenance consists in the fact that grease has to be refilled via lubricant inlets present on the ball joint.
  • the ball joint described therein is designed for suspension in motor vehicles. It has a ball stud which is equipped with a pivotable and rotatably mounted in a housing first spheroidal bearing surface, wherein between the first spherical bearing surface and another, mounted in the housing and connected to the ball stud spherical bearing surface, a roller bearing is present.
  • the rolling bearing used in this document is a cylindrical roller bearing. Such cylindrical roller bearings are adapted to receive high radial forces relative to the axis of rotation of the rolling elements. However, cylindrical roller bearings can transmit no or only very small axial forces.
  • the inventor proposes a ball joint with a ball stud provided with a first spheroidal bearing surface pivotally and rotatably supported in a housing, between the first spheroidal bearing surface and another spherical bearing surface mounted in the housing and connected to the ball stud Roller bearing is present to further develop to the effect that the rolling bearing is a radial and axial forces transmitted rolling bearing.
  • Such equipped ball joint is characterized in particular by extremely low rotational or friction moments around the longitudinal axis of the ball stud. At the same time, high axial and radial forces can be transmitted.
  • optionally adjusting games between the joint components can be compensated by the rolling bearing according to the invention, so that there are no effects on the further usability of the ball joint to be feared.
  • the inventive design of a ball joint the possibility was created to completely separate the rotational movement of the ball pin about its axial center axis of the pivotal movement of the ball stud. This results in a total of completely new design ways for the design of such ball joints.
  • There is provided a cost-effective variant of a ball joint which significantly reduces the manufacturing cost and thus the manufacturing costs by their simple structure.
  • the rolling bearing is a double-row angular contact ball bearing, a tapered roller bearing or a Spherical roller bearing forms.
  • These aforementioned rolling bearing types are each suitable for receiving both axial and radial loads in accordance with the invention and transmitting forces directed in this manner.
  • the aforementioned tapered roller bearings are characterized by a very high load capacity and can accommodate combined and complex loads. It may be necessary to absorb axial forces to provide a second, mirror image arranged tapered roller bearing to allow hereby a counter-guide.
  • the proposed spherical roller bearings are suitable for heaviest loads.
  • a spherical roller bearing run two rows of barrel rollers on a hollow-spherical track.
  • the rollers are guided on solid shelves, so that in addition to the radial loads and axial forces can be absorbed.
  • one of these bearings can be selected.
  • Another essential advantage of the invention is also seen by the inventors in that the axis of rotation of the rolling elements of the rolling bearing with the longitudinal axis of the ball pin forms an angle ⁇ . This practically means that the rolling elements have an inclination.
  • the rolling elements it is possible to accommodate both radial and axial loads improved, without causing the positive properties of the ball joint are reduced, which can be seen in particular in the extremely low friction during a rotational movement of the ball stud.
  • the angle ⁇ can be between 0 ° and 90 °.
  • a solution of the invention is that the ball pin has an at least two-part joint ball and the rolling bearing is received within the composite joint ball.
  • the at least two-part design of the joint ball results in design freedom, which allows a high degree of variability of the individual components, depending on the requirements imposed on the joint. The great flexibility goes hand in hand with the possibility of using standardized components.
  • the rolling elements can be arranged loosely in suitable raceway surfaces between the corresponding joint ball parts. This means that no previously completed rolling bearings must be used to implement the solution according to the invention, but it is thus possible to implement by a career within the mutually corresponding joint ball parts and rolling elements inserted therein a very simple assembly of the ball joint according to the invention and beyond the arrangement To provide the rolling elements between the joint ball parts in any way. This can be implemented without difficulty, the above-mentioned inclinations of the rolling elements relative to the longitudinal axis of the ball stud.
  • the provided within the joint ball parts raceway surfaces must only be suitable to receive the rolling elements and to guide accordingly.
  • An embodiment of the invention can be seen in that the rolling bearing forms a turntable within the ball joint.
  • the inventors also propose to mount the ball joint in a total of a bearing cup received in the housing pivotally.
  • a bearing shell has the advantage that it reduces on the one hand introduced via the ball joint vibrations, that is damps, and on the other hand brings a maintenance freedom of the ball joint with it. Accordingly, by using an elastic bearing shell, no subsequent lubrication of the ball joint must take place at prescribed maintenance intervals with grease.
  • Suitable bearing shell materials are known from the prior art. For example, it is particularly advantageous to use materials such as POM, PEEK or similar materials with good tribological properties, which in the present case reduce the tilting moments to a minimum. Some of these maintenance-free materials have self-lubricating properties, with the addition of the aforementioned damping properties.
  • a retaining ring can be used.
  • This retaining ring is also suitable to bias the bearing shell limited elastic. This results in the significant advantage that the bearing shell undergoes an automatic restraint even in the event of wear-related wear during the life of the ball joint, so that the joint components do not loosen within the ball joint.
  • the ball joint according to the invention is thus designed for a very long life at extremely high both radial and axial loads.
  • the retaining ring can be determined by positive or non-positive connection, for example, by the deformation of a portion of the housing edge in the housing and at the same time fixes the bearing shell in the manner described above.
  • Figure 1 a partial cross section through an example of an inventive
  • FIG. 1 shows, by way of example and in partial section, an alternative embodiment of a ball and socket joint according to the invention.
  • This has a ball stud 1 which is mounted pivotably and rotatably in a housing 2.
  • the housing-side end region of the ball stud 1 has a first spheroidal bearing surface 3, which together with a second spheroidal bearing surface 4 connected to the ball stud 1 forms a joint ball designated overall by 9.
  • a rolling bearing 5 is introduced between the joint ball parts 9.1 and 9.2 .
  • This rolling bearing 5 consists of existing in the joint ball parts 9.1 and 9.2 raceways 10, in the loose numerous rolling elements 7 are used.
  • the particular feature according to the invention consists in the fact that the rolling elements 7 have an oblique position to the longitudinal center axis 8 of the ball stud 1.
  • an inclination is understood to mean an inclined mounting position, so that the axis of rotation 6 of the rolling elements 7 with the longitudinal center axis 8 of the ball stud 1 forms an angle ⁇ .
  • the angle ⁇ 45 °.
  • the joint ball 9 is mounted pivotally in total within a bearing shell 11.
  • the rolling bearings 5 For the reduction of the friction moments of the rotational movement of the ball stud 1, the rolling bearings 5, while the pivotal movement of the ball stud 1 within the housing 2 by the bearing shell 11 receives predefined coefficients of friction.
  • the ball joint shown in the embodiment of Figure 1 has a housing 2 open on one side.
  • a retaining ring 12 is provided, the fixation is carried out by an at least partial deformation of a housing portion.
  • the retaining ring 12 serves to fix the bearing shell and, with it, the joint ball 9 of the ball stud 1, which is recessed therein, within the housing 2 in its position.
  • the bearing shell 11 is made of a plastic and has elastic properties. By this inherent elasticity of the bearing shell 11th also an automatic readjustment of the joint components is possible, if in the course of the life of the ball joint between the bearing components a game should stop. Thus, the ball joint is maintenance-free overall for the entire designed life.
  • a sealing bellows 13 This is on the one hand sealingly attached to the ball stud 1. On the other hand, the sealing bellows 13 bears against the housing 2 with its second edge region. To improve the sealing effect 13 clamping rings 14 and 15 are also arranged in the respective edge regions of the sealing bellows. These clamping rings fix the sealing bellows to the mentioned components. To avoid an axial movement of the voltage applied to the ball stud 1 Dichtungsbalin in the direction of the inner joint components a Dichtungsbalghaltering 16 is also provided in the region of the existing on the ball stud neck 17 17. This supports the sealing bellows edge and fixes it on the ball stud 1.
  • FIG. 2 shows a sectional view according to the section line II-II of Figure 1 is shown. From this, the execution of the rolling bearing 5 can be seen.
  • the illustration in FIG. 2 shows a view of the first ball joint part 9.1 in the area of the rolling bearings 5 introduced therein.
  • raceways 10 are provided in the ball joint part 9.1, in which loose rolling elements 7 are inserted in the previous exemplary embodiment.
  • a corresponding mating track is in the not visible in Figure 2 second ball joint part 9.2.
  • the joint ball is mounted overall within the bearing shell 11, which in turn is inserted into the housing 2.
  • the individual components are shown schematically simplified in the illustration of Figure 2, to explain only the principle of the invention.
  • the guided inside the raceways 10 rolling elements 7 form a total of a turntable within the joint ball 9 of the ball stud. 1

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Support Of The Bearing (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne une articulation à rotule, notamment pour la suspension de roue d'un véhicule automobile, comprenant un tourillon sphérique (1) qui est muni d'une première surface de palier sphéroïdale (3) montée de manière rotative et pivotante dans le boîtier (2), un palier à roulement (5) étant disposé entre la première surface de palier sphéroïdale (3) et une autre surface de palier sphéroïdale (4) connectée au tourillon sphérique (1) et montée dans le boîtier (2). L'invention est caractérisée en ce que le palier à roulement (5) est un palier à roulement transmettant les forces radiales et axiales.
EP07722276A 2006-04-28 2007-04-23 Articulation a rotule Withdrawn EP2013496A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006020397A DE102006020397B4 (de) 2006-04-28 2006-04-28 Kugelgelenk
PCT/DE2007/000718 WO2007124721A1 (fr) 2006-04-28 2007-04-23 Articulation a rotule

Publications (1)

Publication Number Publication Date
EP2013496A1 true EP2013496A1 (fr) 2009-01-14

Family

ID=38514232

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07722276A Withdrawn EP2013496A1 (fr) 2006-04-28 2007-04-23 Articulation a rotule

Country Status (6)

Country Link
US (1) US8251605B2 (fr)
EP (1) EP2013496A1 (fr)
JP (1) JP5448807B2 (fr)
CN (1) CN101432533B (fr)
DE (1) DE102006020397B4 (fr)
WO (1) WO2007124721A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8333792B2 (en) * 2008-02-26 2012-12-18 Spartek Medical, Inc. Load-sharing bone anchor having a deflectable post and method for dynamic stabilization of the spine
US8337536B2 (en) * 2008-02-26 2012-12-25 Spartek Medical, Inc. Load-sharing bone anchor having a deflectable post with a compliant ring and method for stabilization of the spine
WO2011049012A1 (fr) * 2009-10-22 2011-04-28 Ｔｈｋリズム株式会社 Joint a rotule
US8617216B2 (en) * 2010-04-05 2013-12-31 David L. Brumfield Fully-adjustable bone fixation device
US9916775B2 (en) * 2013-03-27 2018-03-13 Humanetics Innovative Solutions, Inc. Joint assembly for crash test dummy
KR101547454B1 (ko) 2015-05-12 2015-08-25 마병익 파노라마 기능을 구비한 볼 헤드용 다기능 볼
DE102020209477B3 (de) 2020-07-28 2021-12-09 Zf Friedrichshafen Ag Verschlusselement für ein Kugelgelenk sowie Kugelgelenk für ein Fahrwerk eines Fahrzeugs
CN113969937B (zh) * 2021-11-11 2024-04-09 中国科学院长春光学精密机械与物理研究所 一种密珠关节铰链及具有该密珠关节铰链的并联机构
DE102022106843B4 (de) 2022-03-23 2023-11-09 Karl Storz Se & Co. Kg Begrenzungsvorrichtung und Verfahren zur Begrenzung der Beweglichkeit eines Drehgelenkes

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Also Published As

Publication number Publication date
CN101432533A (zh) 2009-05-13
CN101432533B (zh) 2015-05-13
WO2007124721A1 (fr) 2007-11-08
US20090245928A1 (en) 2009-10-01
DE102006020397A1 (de) 2007-10-31
DE102006020397B4 (de) 2012-10-25
JP2009535568A (ja) 2009-10-01
US8251605B2 (en) 2012-08-28
JP5448807B2 (ja) 2014-03-19

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