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WO2010121610A1 - Joint à rotule, procédé pour effectuer le premier remplissage d'un tel joint à rotule et procédé pour remplacer un lubrifiant usagé dans un joint à rotule - Google Patents

Joint à rotule, procédé pour effectuer le premier remplissage d'un tel joint à rotule et procédé pour remplacer un lubrifiant usagé dans un joint à rotule Download PDF

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Publication number
WO2010121610A1
WO2010121610A1 PCT/DE2010/050021 DE2010050021W WO2010121610A1 WO 2010121610 A1 WO2010121610 A1 WO 2010121610A1 DE 2010050021 W DE2010050021 W DE 2010050021W WO 2010121610 A1 WO2010121610 A1 WO 2010121610A1
Authority
WO
WIPO (PCT)
Prior art keywords
ball joint
ball
lubricant
joint
flow channel
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/DE2010/050021
Other languages
German (de)
English (en)
Inventor
Dirk Sokolihs
Uwe Petersen
Jörg Lüken
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 WO2010121610A1 publication Critical patent/WO2010121610A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • F16C11/0619—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part comprising a blind socket receiving the male part
    • F16C11/0623—Construction or details of the socket member
    • F16C11/0628—Construction or details of the socket member with linings
    • 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
    • F16C11/0666—Sealing means between the socket and the inner member shaft
    • F16C11/0671—Sealing means between the socket and the inner member shaft allowing operative relative movement of joint parts due to flexing of the sealing means
    • 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
    • F16C11/068—Special features relating to lubrication
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/20—Land vehicles

Definitions

  • the invention relates to a ball joint, a method for Castbe committee such a ball joint and a method for replacing spent lubricant in a ball joint.
  • a ball joint consists essentially of a housing in which the ball joint of a ball pin equipped with the ball joint is rotatably and pivotally mounted. Between the housing and a pin-shaped portion of the ball pin a sealing bellows is arranged, which is filled to reduce friction and thus to reduce wear with a lubricant.
  • Ball joints for use in motor vehicles are exposed not only to mechanical but also to thermal and chemical influences. Under these circumstances, they must work reliably. Therefore, the lubrication of relatively movable components has a special meaning.
  • one problem is that the lubricant present in the sealing bellows is not always distributed in a desirable manner between the joint ball and the bearing areas receiving it. There can be different causes for this.
  • DE-OS 1625616 describes a solution in which not only the sealing bellows is filled with a lubricant.
  • On the side opposite the sealing bellows side of the ball joint is in the housing another lubricant reservoir whose volume is much smaller than that of the sealing bellows.
  • a flow channel in the form of a through hole for transporting the lubricant is introduced within the ball joint.
  • This flow channel has a check valve which permits the transport of the lubricant in only one direction, namely from the sealing bellows to the second lubricant reservoir. Since the ball joint of this ball joint is mounted in an elastic bearing shell, a kind of pumping action is achieved by the movements, which should transport the grease in an improved manner.
  • the invention has for its object to provide a ball joint which is filled with a lubricant and which has a longer life compared to known solutions. Furthermore, at least one method suitable for this purpose must be specified.
  • the sealing bellows has at least one outlet opening at at least one of its edge regions, which is sealed by a closure element until a maximum permissible internal pressure of the lubricant present in the sealing bellows is reached.
  • the closure element can be attached to the sealing bellows, there is an essential advantage, which also leads to a simplified embodiment, that the sealing element sealing off the outlet opening on account of its inherent elasticity is embodied integrally with the sealing bellows. In this way, the closure element in the production of the sealing bellows can be formed directly on this or worked out of it.
  • the at least one flow channel present on the ball stud can be shaped in a simple manner as a bore through the ball joint of the ball stud or as a groove-shaped introduced into the surface of the joint ball Be executed recess.
  • the at least one flow channel forms a connection between the interior of the sealing bellows and a lubricant reservoir formed by a flattening of the ball stud on its side opposite the journal-shaped portion of the ball joint.
  • a plurality of lubricant reservoirs are provided within the ball joint, which are connected via one or more suitable flow channels with each other, so that the lubricant transport is ensured.
  • Ball joints for motor vehicles have different bearings depending on the intended purpose of the ball joint. So it is on the one hand possible to insert the ball joint directly into a corresponding bearing surface of the housing. On the other hand, the joint ball can also be accommodated indirectly in the housing, so that between bearing ball and housing a bearing shell is used, which may for example consist of plastic or metal-plastic composite materials.
  • a bearing shell which may for example consist of plastic or metal-plastic composite materials.
  • the ball joint is inserted into this bearing shell, which in turn has at least one flow channel.
  • the at least one flow channel penetrate the bearing shell or be arranged, for example, on the housing side of the bearing shell.
  • the arrangement of the flow channels can be carried out in the bearing shell so that lubricant in the area of the bearing surfaces, ie between the bearing shell and the surface of the joint ball is also released during use of the ball joint in the motor vehicle.
  • the flow channels are not only the filling of the ball joint with Lubricant or the replacement of the lubricant, but rather it is also possible to use the flow channels for lubrication of the relatively movable joint components.
  • This additional function of the flow channels can be further improved if the bearing areas of the ball joint moreover have separate recesses for operational lubricant supply of the relatively movable components.
  • the one-way valve should according to another proposal on the outside of the ball joint have a connection contour for a grease gun, which thus provide the required pressure in a simple manner and also can be used to fill the ball joint.
  • An inventive method formotbe cauliflower a ball joint is characterized in that first on the one-way valve of the assembled ball joint, a lubricant press is set and then lubricant is introduced under pressure through the one-way valve in the interior of the ball joint, until by opening the closure element from the outlet opening of the sealing bellows Lubricant escapes.
  • another inventive method for replacing used lubricant in a ball joint is characterized in that first on the cleaned one-way valve of the ball joint, a lubricant press is set and then fresh lubricant is introduced under pressure through the one-way valve into the interior of the ball joint until by opening the Closing element from the outlet opening of the sealing bellows consumed lubricant emerges.
  • the filling of the ball joint with fresh lubricant is preferably continued until fresh lubricant emerges from the outlet opening of the sealing bellows.
  • FIG. 2 shows a section through a second embodiment of a ball joint according to the invention
  • FIG. 3 shows a section through a first ball joint in FIG
  • Figure 4 a sectional view of a second ball joint in
  • Figure 5 a sectional view of another ball joint in
  • FIG. 6 an edge region of a sealing bellows in section
  • FIGS. 7-10 various embodiments of a ball stud for a ball joint according to the invention.
  • FIG. 1 for a ball joint has a housing 1, in which a joint ball 2 of a ball stud 3 is rotatably and pivotally mounted.
  • the ball stud 3 protrudes with a pin-shaped portion 4 on one side out of the housing.
  • On this side on the one hand on the pin-shaped portion 4 of the ball stud 3 and on the other hand on the outside of the housing 1 per an edge region 8 and 9 of a sealing bellows 5, which serves by the sealing engagement of its edge regions 8, 9 of the sealing of the ball joint.
  • the housing 1 is closed by a closure lid 18 which is fixed in a conventional manner by a deformed portion of the housing 1 and the housing 1 seals.
  • the ball joint 2 of the ball stud 3 is mounted in this embodiment of a ball joint in two different storage areas 16 and 17.
  • the storage area 17 forms part of the inside of the housing 1, which in this section a spherical Has contour.
  • the bearing area 16 is part of a bearing shell 13 made of plastic or rubber or of the corresponding bearing body 13 within the housing 1. In the exemplary embodiment, it is a ball joint filled with lubricant.
  • the sealing bellows 5 forms a first lubricant reservoir and the portion between the joint ball 2 and closure cap 18 a second lubricant reservoir 12.
  • a flow channel system is formed, the origin of which forms a one-way valve 7, the on the outside of the housing 1 has a contour which allows to set, for example, a grease gun.
  • a grease press over the lubricant, an overpressure within the ball joint can be generated, which causes the lubricant in motion and transported in this way through the ball joint.
  • the one-way valve 7 is inserted laterally in the wall of the housing 1 in the ball joint in Figure 1.
  • a flow channel 6 is present, which passes through the joint ball 2 as a through hole obliquely.
  • the bearing shell 13 has a flow channel 14.
  • the sealing bellows 5 ultimately has on its underside, that is to say on the side resting against the journal-shaped section 4, via an outlet opening 10 in its edge region 9, wherein the outlet opening 10 is sealed by a closure element 11 as long as a limiting pressure is not exceeded.
  • the closure element 11 opens and lubricant can escape from the interior of the ball joint via the outlet opening 10.
  • a flow channel system was created in the ball joint, which can serve not only for the initial filling of a fully assembled ball joint, but also for the exchange of consumed Schmerffens.
  • the possibility of replacing a contaminated lubricant the life of a ball joint can be increased.
  • the sectional view of a ball joint in the region of its bearing shell according to FIG. 3 illustrates another example of a ball joint according to the invention.
  • the peculiarity here is that the bearing shell 13 next to the flow channel 14 also on the side of its storage area 16 has a flow channel 15. This can take over in addition to the transport of the lubricant in accordance with the invention also the function of an operational lubrication of the bearing pairing between ball joint 2 and bearing shell 13.
  • FIG. 4 A sectional view of a further ball joint in the region of its bearing shell is shown in FIG. 4.
  • an insert 19 is arranged between the bearing shell 13 and the closure lid 18 or the inner side of the housing, which in the example is designed as an L-shaped ring in cross section.
  • the insert has distributed over its circumference a plurality of beads 20, which increase its elasticity. In this way, a bias voltage can be brought into storage.
  • the further example of a ball joint shown in FIG. 5 has a bearing shell 13 which is equipped with a plurality of beads 20. Between the bearing shell 13 and the closure cover 18 or the inner side of the housing a rubber ring 21 is used in this variant, which can be carried out loosely or as attached to the bearing shell 13 rubber ring sin.
  • the lower edge region 9 of the sealing bellows 5 is shown. This has an outlet opening 10, which is covered by a closure element 11 and thus closed until a limit pressure within the ball joint is exceeded. Above the limit pressure, the closure element 11 releases the outlet opening, so that damage to the sealing bellows 5 or other components can be avoided.
  • the closure element 11 is formed in the manufacture of the sealing bellows 5 at this and thus designed in one piece with the sealing bellows 5. It also has an intrinsic elasticity that allows automatic closure when the pressure falls below the limit.
  • FIGS. 7 to 10 illustrate various possibilities of designing the ball stud 3 for a ball and socket joint according to the invention.
  • the ball studs 3 shown as individual parts have a peg-shaped section 4, which in each case has the same design. Different, however, is the arrangement and the geometry of the Flow channel 6.
  • Ball pin longitudinal axis executed in a plane encircling groove.
  • the groove-shaped design of the flow channel 6 extends with the ball pivot longitudinal axis around the ball joint 2 around.
  • the course of the flow channel 6 is carried out from the end of the peg-shaped section 4 to the pole face of the joint ball 2.
  • the ball stud 3 of Figure 9 corresponds to the embodiments, as they were also used in ball joints of Figures 1 to 3.
  • the flow channel 6 passes through the joint ball 2.
  • the flow channel 6 is arranged around the joint ball 2 in an imaginary plane, which is aligned parallel or at an angle to a plane running along the ball pin longitudinal axis.
  • the flow channel 6 may not only be groove-shaped in such an embodiment. Rather, it is also possible to execute him as worked out from the joint ball 2 surface element. This surface element can, in analogy to the representation in FIG. 10, orbit the circumference of the joint ball 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

L'invention concerne un joint à rotule comportant un carter (1) dans lequel la rotule (2) d'un pivot à rotule (3) est montée de manière rotative et pivotante. Un soufflet d'étanchéité (5), placé entre le carter (1) et une partie en forme de tourillon (4) du pivot à rotule (3), est rempli d'un lubrifiant. Le pivot à rotule (3) présente au moins un canal d'écoulement (6) pour le transport du lubrifiant à l'intérieur du joint à rotule. Selon l'invention, le lubrifiant est déplacé par surpression à travers une soupape anti-retour (7) présente sur le joint à rotule. L'invention concerne en outre un procédé pour effectuer le premier remplissage d'un joint à rotule avec un lubrifiant ainsi qu'un procédé pour remplacer le lubrifiant usagé.
PCT/DE2010/050021 2009-04-22 2010-04-16 Joint à rotule, procédé pour effectuer le premier remplissage d'un tel joint à rotule et procédé pour remplacer un lubrifiant usagé dans un joint à rotule Ceased WO2010121610A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009002565.0 2009-04-22
DE102009002565A DE102009002565A1 (de) 2009-04-22 2009-04-22 Kugelgelenk, Verfahren zum Erstbefüllen eines derartigen Kugelgelenkes und Verfahren zum Austausch verbrauchten Schmiermittels in einem Kugelgelenk

Publications (1)

Publication Number Publication Date
WO2010121610A1 true WO2010121610A1 (fr) 2010-10-28

Family

ID=42702918

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2010/050021 Ceased WO2010121610A1 (fr) 2009-04-22 2010-04-16 Joint à rotule, procédé pour effectuer le premier remplissage d'un tel joint à rotule et procédé pour remplacer un lubrifiant usagé dans un joint à rotule

Country Status (2)

Country Link
DE (1) DE102009002565A1 (fr)
WO (1) WO2010121610A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160305057A1 (en) * 2015-04-14 2016-10-20 General Electric Company Ball joint for a washing machine suspension system
US10844900B2 (en) * 2015-10-28 2020-11-24 Zf Friedrichshafen Ag Radial ball joint for a vehicle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014225312A1 (de) 2014-12-09 2016-06-09 Zf Friedrichshafen Ag Kugelgelenk
DE102017216488A1 (de) * 2017-09-18 2019-03-21 Zf Friedrichshafen Ag Radialkugelgelenk für ein Lenkerbauteil eines Kraftfahrzeugs

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3187590A (en) * 1962-08-31 1965-06-08 Watts Electric & Mfg Co Lubricating assembly having a pressure venting seal
DE1266074B (de) * 1962-06-29 1968-04-11 Thompson Ramo Wooldridge Inc Dichtungsbalg fuer Kugelgelenke od. dgl.
DE1625616A1 (de) * 1966-11-21 1970-07-23 Citroen Sa Verfahren und Vorrichtung zum selbsttaetigen Schmieren von Gelenken
US4003666A (en) * 1976-05-21 1977-01-18 Gulf & Western Manufacturing Company Ball joint assembly
US4076344A (en) * 1976-05-07 1978-02-28 Gulf & Western Manufacturing Company Bearing assembly for a ball and socket joint
US4154546A (en) * 1977-06-21 1979-05-15 Automotive Products Limited Pin and socket joint

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733085A (en) 1956-01-31 Latzen
US4087188A (en) 1976-03-03 1978-05-02 Mceowen Victor R Pivot joint housing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1266074B (de) * 1962-06-29 1968-04-11 Thompson Ramo Wooldridge Inc Dichtungsbalg fuer Kugelgelenke od. dgl.
US3187590A (en) * 1962-08-31 1965-06-08 Watts Electric & Mfg Co Lubricating assembly having a pressure venting seal
DE1625616A1 (de) * 1966-11-21 1970-07-23 Citroen Sa Verfahren und Vorrichtung zum selbsttaetigen Schmieren von Gelenken
US4076344A (en) * 1976-05-07 1978-02-28 Gulf & Western Manufacturing Company Bearing assembly for a ball and socket joint
US4003666A (en) * 1976-05-21 1977-01-18 Gulf & Western Manufacturing Company Ball joint assembly
US4154546A (en) * 1977-06-21 1979-05-15 Automotive Products Limited Pin and socket joint

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160305057A1 (en) * 2015-04-14 2016-10-20 General Electric Company Ball joint for a washing machine suspension system
US9994989B2 (en) * 2015-04-14 2018-06-12 Haier Us Appliance Solutions Inc. Ball joint for a washing machine suspension system
US10844900B2 (en) * 2015-10-28 2020-11-24 Zf Friedrichshafen Ag Radial ball joint for a vehicle

Also Published As

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