WO2008077021A1 - Particularité de rétention de couvercle de graisse formé - Google Patents

Particularité de rétention de couvercle de graisse formé Download PDF

Info

Publication number
WO2008077021A1
WO2008077021A1 PCT/US2007/087898 US2007087898W WO2008077021A1 WO 2008077021 A1 WO2008077021 A1 WO 2008077021A1 US 2007087898 W US2007087898 W US 2007087898W WO 2008077021 A1 WO2008077021 A1 WO 2008077021A1
Authority
WO
WIPO (PCT)
Prior art keywords
grease cover
groove
constant velocity
velocity joint
grease
Prior art date
Application number
PCT/US2007/087898
Other languages
English (en)
Inventor
Michael Madden
Brian Michael Valovick
Jake Lawson
Original Assignee
Gkn Driveline North America, Inc.
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
Priority claimed from US11/957,600 external-priority patent/US7905785B2/en
Application filed by Gkn Driveline North America, Inc. filed Critical Gkn Driveline North America, Inc.
Priority to DE112007003077.1T priority Critical patent/DE112007003077B4/de
Priority to US12/519,929 priority patent/US8267798B2/en
Priority to JP2009543135A priority patent/JP5320299B2/ja
Priority to KR1020097015020A priority patent/KR101463383B1/ko
Priority to CN2007800469489A priority patent/CN101563549B/zh
Publication of WO2008077021A1 publication Critical patent/WO2008077021A1/fr

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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/84—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor
    • F16D3/843—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/84—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor

Definitions

  • the present invention generally relates to constant velocity joints and specifically to grease covers therefore.
  • Constant velocity joints are common components in vehicles. Constant velocity joints are often employed where transmission of a constant velocity rotary motion is desired or required. CV joints are typically greased or otherwise lubricated for the life of the component. The joints are sealed to retain the grease or lubricant inside the joint while keeping contaminants and foreign matter, such as water and dirt, out of the joint. Moreover, a sealing boot, which may be made of rubber, thermoplastic, silicone material, or the like, usually encloses annular portions at an axial end of the CV joints with a shaft interposed therethrough. The opposing axial end may also be enclosed with a grease cover to seal the CV joint from the contaminants.
  • a sealing boot which may be made of rubber, thermoplastic, silicone material, or the like, usually encloses annular portions at an axial end of the CV joints with a shaft interposed therethrough. The opposing axial end may also be enclosed with a grease cover to seal the CV joint from the contaminants.
  • CV joints may create excess internal pressures in the inner chamber of the joint.
  • FIG. 1 illustrates a CV joint 20 having a central axis A-A.
  • CV joint 20 includes driven end 22 and a driving end 24.
  • CV joint 20 further includes a joint assembly 26 coupled to a shaft 28 with a boot cover assembly 30 connected therebetween.
  • CV joint 20 further includes a grease cover 32 that seals the driving end 24.
  • Boot cover assembly 30 includes a metal cover 34 and a flexible boot 36. A portion of metal cover 34 is crimped onto boot 36 for attachment thereto.
  • Boot cover assembly 30 and grease cover 32 protect the moving parts of CV joint 20 during operation by retaining the grease or lubricant inside the joint while keeping contaminants and foreign matter, such as water and dirt, out of the joint assembly 26.
  • the grease cover 32 may include a vent valve aperture to accommodate a vent valve (not shown).
  • the joint assembly 26 includes a cage 40, a first rotational member or outer race 42, a second rotational member or inner race 44, and a plurality of balls (not shown).
  • the cage 40 retains the balls between the first rotational member 42 and the second rotational member 44 in a generally equally spaced circumferential orientation.
  • the shaft 28 is splined to second rotational member 44 to transmit torque.
  • Joint chamber 48 contains grease or other lubricant (not shown) for lubrication between cage 40, first rotational member 42, second rotational member 44, and the balls.
  • the grease cover 32 has a generally circular body 50 defined, at least in part, by a peripheral edge 52 and a generally annular sealing surface 58, as best seen in FIGS. IA and 2.
  • the first rotational member 42 has a grease cover end 60 having a generally cylindrical inner surface 62 and a generally annular mating surface 64.
  • a gasket 70 is interposed between the sealing surface 58 of the grease cover 32 and the mating surface 64 of the first rotational member 42.
  • the grease cover 32 is therefore required to seal the joint chamber 48 at varying operational temperatures and pressures.
  • the grease cover 32 is press fit into the first rotational member 42 by providing an interference fit between the inner surface 62 and the peripheral edge 52.
  • the force required to press fit the grease cover 32 into the inner surface 62 defines the compressive force on the gasket 70.
  • the expansion force generated by the gasket 70 acts against the retention of the grease cover 32 with the first rotational member 42.
  • An embodiment of a connection system for a grease cover of a constant velocity joint includes a groove portion formed in a generally annular portion of the constant velocity joint.
  • the generally annular portion is defined, at least in part, by an inner surface.
  • the system also includes a grease cover selectively positioned at least partially within the groove portion.
  • the grease cover includes an outer edge portion.
  • a constant velocity joint includes a rotational member having a generally cylindrical surface.
  • the generally cylindrical surface is defined, at least in part, by a groove portion.
  • the constant velocity joint further includes a grease cover selectively positioned adjacent the rotational member. An edge portion of the grease cover is positioned within the groove to at least partially retain the grease cover in a desired position.
  • An embodiment of a method includes of assembling a constant velocity joint includes forming a groove in a generally cylindrical inner surface, and positioning a portion of a cover member within the groove. The inner surface defines a portion of the constant velocity joint.
  • FIG. 1 is a sectional view of a constant velocity joint illustrating a grease cover.
  • FIG. IA is an enlarged view of area IA of FIG. 1.
  • FIG. 2 is a perspective view the grease cover of FIG. 1.
  • FIG. 3 is a sectional view of a constant velocity joint according to an embodiment.
  • FIG. 3 A is an enlarged view of area 3 A of FIG. 3.
  • FIG. 4 is a perspective view a grease cover according to an embodiment.
  • FIG. 5 is a partial sectional view of an embodiment of a constant velocity joint with a grease cover insertion tool.
  • FIG. 6 is a perspective view of an embodiment of the insertion tool of FIG. 5.
  • FIGS. 7-10 are sectional views of the portion of the CV joint of FIG. 3, illustrated in various steps of assembly with some section lines omitted for clarity.
  • FIG. 11 is sectional view of an embodiment of a constant velocity joint. Detailed Description
  • constant velocity joints are shown.
  • the illustrated constant velocity joints and joint chambers may be fixed constant velocity joints of the monoblock style that may be used in the propeller shaft (prop shaft) of a vehicle.
  • any type of constant velocity joints and constant velocity joint chambers including without limitation, tripod, fixed tripod, or the like may be used in accordance with the present invention. That is, one of ordinary skill in the art will recognize the advantages realized by the invention in substantially all types of constant velocity joints, and, therefore the invention should not be limited to the illustrated embodiments.
  • FIG. 3 illustrates a CV joint 120 having a driven end 122 and a driving end 124, generally aligned along an axis D-D.
  • CV joint 120 further includes a joint assembly 126 that is coupled to a shaft 128.
  • a boot cover assembly 130 is connected between the joint assembly 126 and the shaft 128.
  • Boot cover assembly 130 includes a metal cover 134 and a flexible boot 136.
  • a cover member, or grease cover, 132 seals the driving end 124 of CV joint 120.
  • Joint assembly 126 includes a cage 140, a first rotational member or outer race 142, a second rotational member or inner race 144, and a plurality of balls (not shown). As illustrated, shaft 128 is splined to second rotational member 144.
  • the joint chamber 148 contains grease or other lubricant (not illustrated).
  • the grease cover 132 has a generally circular body 150 defined, at least in part, by a peripheral edge portion 152 defined, at least in part, by an end surface 154, finger portions, or edge portions, 156, and a generally annular sealing portion 158.
  • the first rotational member 142 has a grease cover end 160 having a generally cylindrical inner surface 162 and a generally annular mating surface 164.
  • the inner surface 162 has an annular groove 166, defined by a groove surface 168, formed therein.
  • a sealing ring, or sealing member, 170 is interposed between the sealing portion 158 of the grease cover 132 and the annular mating surface 164.
  • the sealing member 170 extends generally between the sealing portion 158 and a distal surface 172 of the sealing member 170.
  • the distal surface 172 of the sealing member 170 seals against the mating surface 164 of the first rotational member 142, as discussed in greater detail below.
  • FIG. 3 A illustrates the sealing member 170 in an installed, compressed configuration having a thickness of distance MC measured generally between the sealing portion 158 and the mating surface 164.
  • FIG. 7 illustrates the sealing member 170 in an uninstalled, uncompressed configuration having a thickness of distance MN measured generally between the sealing portion 158 and the distal surface 172.
  • the inner surface 162 and the mating surface 164 form a recess 174 within the first rotational member 142.
  • the inner surface 162, the mating surface 164 and the recess 174 are a portion of the joint chamber 148. Accordingly, the grease cover 132 seals at least a portion of the joint chamber 148.
  • Edge portions 156 of peripheral edge portion 152 include alignment members 180 and retaining members 182 that differ in form and function, as discussed below, although other embodiments may include generally only one type of edge portion 156, or may include greater than two types of edge portions 156. In the embodiment illustrated, alignment members 180 and retaining members 182 extend from the grease cover 132 and are separated by recessed portions 184.
  • the peripheral edge portion 152 may be constructed of a resilient material for axially retaining the grease cover 132 relative to the first rotational member 142 and/or providing a desired value of compression on the sealing member 170.
  • the alignment members 180 define a larger outer diameter than the retaining members 182. That is, the alignment members 180 extend farther from the sealing portion 158 of body 150 than the retaining members 182. At least the retaining members 182 extend into the groove 166, although other embodiments may include alignment members 180 that extend into the groove 166.
  • the sealing portion 158 is defined, at least in part, by a tool mating surface 186 and a sealing surface 188.
  • an insertion tool 190 may be used to install the grease cover 132.
  • the insertion tool 190 is has a generally annular mating portion 192 and an expanding portion 194.
  • the annular mating portion 192 includes a generally cylindrical outer surface 196, an inner support surface 198, and a grease cover urging surface 200.
  • the annular mating portion 192 is a body of rotation generally about the axis D-D of the partial section, although in other embodiments the insertion tool 190 may be formed of a radially segmented body of rotation.
  • the expanding portion 19 includes a generally annular body 204 defined, at least in part, by a generally cylindrical inner surface 206, an outer surface 208 and a plurality of extensions 210 extending therefrom. Extensions 210 have an expanding surface 214 and a guiding surface 216 (FIG. 6). As illustrated, the mating portion 192 is interposed within the expanding portion 194 and permitted to move rectilinearly relative thereto, generally along the axis D-D. That is, the outer surface 196 of the mating portion 192 is positioned adjacent the inner surface 206 of the expanding portion 194, permitting movement therebetween.
  • the extensions 210 may urge the retaining members 182 into the groove 166 to retain the grease cover 132 axially relative to the remainder of the CV joint 120.
  • the expanding portion 194 has a number of extensions that is equal to the number of retaining portions 182, and each extension 210 will align with one retaining portion 182 of the grease cover 132, as described herein.
  • the insertion tool 190 and the CV joint 120 form a grease cover retention system.
  • the grease cover 132 and insertion tool 190 are positioned coaxially and in axial alignment with the grease cover end 160 of the first rotational member 142 by a user, or operator (not shown). Alternatively, the grease cover 132 may be first aligned with the grease cover end 160 and then the insertion tool 190.
  • the grease cover 132 and the first rotational member 142 are then urged together, as the mating portion 192 of the insertion tool 190 is urged in a first direction F relative to the grease cover end 160, and the peripheral edge portion 152 of the grease cover 132 may contact the inner surface 162.
  • the insertion tool 190 is guided generally along the axis D-D toward the shaft 128.
  • the grease cover 132 is then further urged in the first direction F, as the grease cover urging surface 200 exerts a force on the tool mating surface 186, until the sealing member 170 contacts the mating surface 164.
  • the grease cover 132 is then further urged in the first direction F until the sealing member 170 is compressed and the end surfaces 154 of the retaining members 182 are urged beyond the groove surface 168, as best seen in FIG. 9.
  • the expanding portion 194 of the insertion tool 190 is then moved in the first direction F relative to the CV joint 120, as the mating portion 192 is retained in about a constant position relative to the CV joint 120.
  • the expanding surfaces 214 of the extensions 210 urge the retaining members 182 radially outward as a portion of each retaining member 182 extends into the groove 166.
  • the insertion tool 190 may then be removed from the CV joint 120 as follows.
  • the mating portion 192 is urged in the second direction S as the sealing member 170 resiliently expands between the sealing portion 158 and the mating surface 164.
  • the insertion tool 190 is further urged in the second direction S until at least a portion of the end surface 154 of the retaining members 182 contacts at least a portion of the groove surface 168.
  • the insertion tool 190 is then further urged in a direction S until there is no contact between the insertion tool 190 and the grease cover 132.
  • the material for grease cover 132 is preferably a metallic material, and may be spring metal or a zinc plated low carbon steel.
  • the grease cover 132 may also be a plastic, nylon or any non-metallic material surrounded in a metallic outer periphery 152.
  • the sealing member 170 is integrally molded, or other wise attached, to the sealing portion 158 of the grease cover 132.
  • the sealing member 170 extends generally between the sealing portion 158 and a distal surface 172.
  • the sealing member 170 is illustrated in an alternative embodiment where the sealing ring is not molded to the grease cover 132.
  • the groove 166 is formed as distinct groove portions 266 formed in the inner surface 162.
  • each retaining member 182 may be desirably positioned within a groove portion 266 to axially retain the grease cover 132 relative to the first rotational member 142.
  • the retaining members 182 may extend from the grease cover 132 such that the retaining members biasingly contact the inner surface 162 of the first rotational member 142 as the grease cover 132 is installed within the CV joint 120.
  • the retaining members 182 may then resiliently deflect into groove 166 (or groove portions 266) as the grease cover 132 is moved in the first direction F sufficiently to permit such deflection, thereby permitting the installation of the grease cover 132 without the expanding portion 194 and/or the insertion tool 190.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)
  • Diaphragms And Bellows (AREA)
  • Insertion Pins And Rivets (AREA)

Abstract

L'invention concerne un système de raccordement pour un couvercle de graisse d'un joint homocinétique comprenant une portion de rainure formée dans une portion généralement annulaire du joint homocinétique. La portion généralement annulaire est définie, au moins en partie, par une surface interne. Le système comprend également un couvercle de graisse positionné sélectivement au moins en partie dans la portion de rainure. Le couvercle de graisse comprend une portion de bord externe.
PCT/US2007/087898 2006-12-18 2007-12-18 Particularité de rétention de couvercle de graisse formé WO2008077021A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE112007003077.1T DE112007003077B4 (de) 2006-12-18 2007-12-18 Schmierfettabdeckungsformteil mit Rückhalteeigenschaft
US12/519,929 US8267798B2 (en) 2006-12-18 2007-12-18 Formed grease cover retention feature
JP2009543135A JP5320299B2 (ja) 2006-12-18 2007-12-18 成形グリースカバー保持機構
KR1020097015020A KR101463383B1 (ko) 2006-12-18 2007-12-18 형성된 그리스 커버 유지 형상
CN2007800469489A CN101563549B (zh) 2006-12-18 2007-12-18 成形润滑脂盖保持零件

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US87050006P 2006-12-18 2006-12-18
US87051506P 2006-12-18 2006-12-18
US60/870,515 2006-12-18
US60/870,500 2006-12-18
US11/957,600 US7905785B2 (en) 2006-12-18 2007-12-17 Sealing assembly
US11/957,600 2007-12-17

Publications (1)

Publication Number Publication Date
WO2008077021A1 true WO2008077021A1 (fr) 2008-06-26

Family

ID=39536722

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/087898 WO2008077021A1 (fr) 2006-12-18 2007-12-18 Particularité de rétention de couvercle de graisse formé

Country Status (5)

Country Link
JP (1) JP5320299B2 (fr)
KR (1) KR101463383B1 (fr)
CN (1) CN101563549B (fr)
DE (1) DE112007003077B4 (fr)
WO (1) WO2008077021A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010014285B4 (de) * 2010-04-08 2015-03-19 Ifa-Technologies Gmbh Flanschbares Gleichlaufdrehgelenk
US8414406B2 (en) * 2010-07-19 2013-04-09 Dana Automotive Systems Group, Llc Constant velocity joint assembly and method of securing a shaft to the assembly
JP7307556B2 (ja) * 2019-03-01 2023-07-12 日立Astemo株式会社 プロペラシャフト

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4356930A (en) * 1981-04-20 1982-11-02 William H. Roper Container, engagement ring and cover assembly
US5647801A (en) * 1994-03-25 1997-07-15 Lohr & Bromkamp Gmbh Constant velocity joint
US6699129B2 (en) * 2002-06-10 2004-03-02 Gkn Automotive, Inc. Vent for a constant velocity joint
US6793581B2 (en) * 2000-12-15 2004-09-21 Gkn Driveline North America, Inc. Venting solution for constant velocity joint

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1021690A (en) * 1963-05-14 1966-03-09 Holset Engineering Co Improvements in and relating to universal joints and couplings
GB1276770A (en) * 1970-03-19 1972-06-07 Gkn Transmissions Ltd Improvements in propeller shaft assemblies
JPS59116179U (ja) * 1983-01-24 1984-08-06 エヌオーケー株式会社 オイルシ−ル取付用治具
JPH0579056U (ja) * 1992-03-27 1993-10-26 豊田工機株式会社 等速ジョイントにおけるカバー装置
IT1289778B1 (it) * 1996-12-20 1998-10-16 Skf Ind Spa Dispositivo di bloccaggio e sbloccaggio di un gruppo d'accoppiamento tra organi meccanici utilizzante un elemento elastico bistabile.
JP2001304285A (ja) * 2000-04-20 2001-10-31 Ntn Corp 等速自在継手及びこれを用いた車輪用軸受装置
US7226360B2 (en) * 2001-12-14 2007-06-05 Gkn Driveline North America, Inc. Grease cap for a constant velocity joint

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4356930A (en) * 1981-04-20 1982-11-02 William H. Roper Container, engagement ring and cover assembly
US5647801A (en) * 1994-03-25 1997-07-15 Lohr & Bromkamp Gmbh Constant velocity joint
US6793581B2 (en) * 2000-12-15 2004-09-21 Gkn Driveline North America, Inc. Venting solution for constant velocity joint
US6699129B2 (en) * 2002-06-10 2004-03-02 Gkn Automotive, Inc. Vent for a constant velocity joint

Also Published As

Publication number Publication date
DE112007003077T5 (de) 2009-10-29
CN101563549B (zh) 2012-01-18
KR101463383B1 (ko) 2014-11-19
JP5320299B2 (ja) 2013-10-23
KR20090091238A (ko) 2009-08-26
DE112007003077B4 (de) 2018-11-08
JP2010513824A (ja) 2010-04-30
CN101563549A (zh) 2009-10-21

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