WO2009018262A1 - Universal joint with bearing cup retention mechanism and method - Google Patents

Universal joint with bearing cup retention mechanism and method Download PDF

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Publication number
WO2009018262A1
WO2009018262A1 PCT/US2008/071448 US2008071448W WO2009018262A1 WO 2009018262 A1 WO2009018262 A1 WO 2009018262A1 US 2008071448 W US2008071448 W US 2008071448W WO 2009018262 A1 WO2009018262 A1 WO 2009018262A1
Authority
WO
WIPO (PCT)
Prior art keywords
aperture
universal joint
retaining member
recess
bearing cup
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/US2008/071448
Other languages
French (fr)
Inventor
Joel G. Stambek
Robert J. Middleton
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.)
American Axle and Manufacturing Inc
Original Assignee
American Axle and Manufacturing 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
Application filed by American Axle and Manufacturing Inc filed Critical American Axle and Manufacturing Inc
Priority to DE112008002089T priority Critical patent/DE112008002089T5/en
Priority to BRPI0816473-8A priority patent/BRPI0816473A2/en
Publication of WO2009018262A1 publication Critical patent/WO2009018262A1/en
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
    • 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
    • F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
    • F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
    • F16D3/40—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another with intermediate member provided with two pairs of outwardly-directed trunnions on intersecting axes
    • F16D3/41—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another with intermediate member provided with two pairs of outwardly-directed trunnions on intersecting axes with ball or roller bearings
    • 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
    • F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
    • F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
    • F16D3/382—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another constructional details of other than the intermediate member
    • F16D3/385—Bearing cup; Bearing construction; Bearing seal; Mounting of bearing on the intermediate member
    • 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
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/41—Couplings
    • 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
    • F16D2250/00—Manufacturing; Assembly

Definitions

  • the present disclosure relates to vehicle universal joint assemblies, and more specifically to bearing retention mechanisms for universal joint assemblies.
  • Propshafts are commonly employed for transmitting power from a rotational power source, such as the output shaft of a vehicle transmission, to a rotatably driven mechanism, such as a differential assembly.
  • a rotational power source such as the output shaft of a vehicle transmission
  • propshafts are connected to the rotational power source and rotatably driven mechanism via a constant velocity or universal joint.
  • the universal joint is typically formed from two yokes, a spider that is disposed between the yokes, and bearings that are received on trunnions of the spider.
  • a universal joint may include a spider, a yoke, a bearing cup, and a retaining member.
  • the spider may include a plurality of trunnions and the yoke may include first and second arms.
  • the first arm may include a first aperture therethrough receiving a first trunnion therein.
  • the first arm may additionally include a first anti-rotation feature.
  • the bearing cup may be disposed in the first aperture and may include a second anti-rotation feature.
  • the retaining member may be located in the first aperture and may be engaged with the first and second anti-rotation features to prevent relative rotation between the bearing cup and the yoke.
  • a method of assembling a universal joint assembly may include positioning a spider relative to a yoke, positioning a bearing cup relative to the yoke, and forming a retaining member.
  • Positioning the spider may include locating the spider between first and second arms of the yoke and locating a trunnion of the spider within an aperture extending through the first arm.
  • the bearing cup may be positioned within the aperture and the trunnion may be located therein.
  • the retaining member may be formed in the aperture to engage a first anti-rotation feature on the first arm and a second anti-rotation feature on the bearing cup to prevent relative rotation between the bearing cup and the yoke.
  • Figure 1 is a schematic illustration of a vehicle according to the present disclosure
  • Figure 2 is a fragmentary perspective cut-away view of a rear axle portion of the vehicle of Figure 1 ;
  • Figure 3 is a fragmentary perspective view of a propshaft assembly of the vehicle of Figure 1 ;
  • Figure 4 is a fragmentary exploded perspective view of the propshaft assembly of Figure 3;
  • Figure 5 is a fragmentary sectional view of the proshaft assembly of Figure 3.
  • Figure 6 is a fragmentary perspective view of a propshaft assembly of Figure 3 including a mold housing;
  • Figure 7 is a flow diagram illustrating assembly of a universal joint of the propshaft assembly of Figure 6.
  • a vehicle 10 may include an engine 12, a transmission 14, and a driveline 16.
  • Transmission 14 may be driven by engine 12.
  • Transmission 14 may include an output 18 and a gear reduction unit (not shown) in driving engagement with driveline 16.
  • Driveline 16 may include a propshaft assembly 20, a rear axle assembly 22, and wheels 24.
  • Propshaft assembly 20 may be coupled for rotation with transmission output 18.
  • Drive torque may be transmitted from propshaft assembly 20 to rear axle assembly 22 where it may be selectively transmitted to wheels 24.
  • rear axle assembly 22 may include a differential assembly 26 and left and right axle shaft assemblies 28, 30.
  • Differential assembly 26 may include a housing 32, a differential unit 34 and an input shaft assembly 36.
  • Housing 32 may support differential unit
  • second axis 40 that may be generally perpendicular to first axis 38.
  • Housing 32 may include a wall member 42 that defines a central cavity 44 having a left axle aperture 46, a right axle aperture 48 and an input shaft aperture 68. Housing 32 may include a pair of axle tubes 52 that are fixedly mounted to wall member 42. Differential unit 34 may be disposed within central cavity 44 of housing 32 and may include a gearset 60. Gearset 60 may include a first side gear (not shown), a second side gear 64, and a plurality of pinions 65 engaged with the first side gear and second side gear 64. A flange 66, which may be employed to support a brake assembly (not shown), may be coupled to a distal end of both left and right axle shaft assemblies 28, 30.
  • Input shaft assembly 36 may extend through input shaft aperture 68 and may be supported therein for rotation about second axis 40. Input shaft assembly 36 may be coupled for rotation with propshaft assembly 20 and may transmit drive torque to differential unit 34. More specifically, drive torque received by input shaft assembly 36 may be transmitted to differential unit 34 such that drive torque is distributed to the first side gear and second side gear 64, causing left and right axle shaft assemblies 28, 30 to rotate about first axis 38.
  • Left and right axle shaft assemblies 28, 30 may each include an axle shaft 70 that is supported for rotation in axle tube 52 about first axis 38.
  • Each of axle shafts 70 may include an externally splined portion 72 that may meshingly engage a mating internally splined portion (not shown) that is formed into first and second side gears 64.
  • an end 62 of propshaft assembly 20 is shown and may include a shaft structure 74 and a universal joint 76.
  • An opposite end of propshaft assembly 20 may be generally similar to end 62. Therefore, it is understood that the description of end 62 applies equally to the opposite end of propshaft assembly 20.
  • a yoke assembly 82 may include a yoke 78 and universal joint 76 that includes a spider 80, a plurality of bearing cups 84, a plurality of roller bearings 85, and a plurality of retaining members 86.
  • Yoke 78 may be coupled to end 88 of shaft structure 74 with yoke assembly 82 extending therefrom.
  • Yoke assembly 82 may include a pair of arms 90, 92 that are generally similar to one another. Therefore, arm 90 will be described with the understanding that the description applies equally to arm 92.
  • Arm 90 may include an aperture 94 extending therethrough from a first face 96 to a second face 98 ( Figure 5), first and second recesses 100, 102 forming a first set of anti-rotation features and an annular recess 104 forming an axial retention feature.
  • First and second recesses 100, 102 may be in communication with and may extend radially outwardly from aperture 94 at first face 96.
  • Annular recess 104 may extend into an inner wall of aperture 94 at a location between first and second faces 96, 98 and may be in communication with first and second recesses 100, 102.
  • Spider 80 may include a plurality of cylindrical projections or trunnions 106 housed within bearing cups 84.
  • bearing cups 84 may be located within aperture 94.
  • Bearing cup 84 may include an end cap 108 and an annular bearing wall 1 10 extending from a first side 1 12 thereof, forming a generally U-shaped cross section.
  • First side 1 12 of end cap 108 may generally face arm 92 and annular bearing wall 1 10 may generally extend toward arm 92.
  • a second side 114 of end cap 108 generally opposite to first side 112 may include a series of discrete recesses 1 16 extending axially into second side 1 14 to form a second set of anti-rotation features.
  • Bearing cup 84 may also include a bore 1 18 housing trunnion 106 and containing roller bearings 85 that are disposed about trunnion 106.
  • End cap 108 may be located between first and second faces 96, 98 and may be spaced axially inwardly from first face 96, forming a recess
  • Retaining member 86 may be located within recess 120. Retaining member 86 may axially and rotationally locate bearing cup 84 relative to yoke assembly 82.
  • Retaining member 86 may include a body portion 122 having first and second radially outwardly extending protrusions 124, 126, an annular protrusion 128 extending radially outwardly from an outer perimeter thereof, and a series of discrete axially extending protrusions 130. Retaining member 86 may be seated within recess 120. First and second protrusions 124, 126 may be engaged with first and second recesses 100, 102, respectively, to prevent rotation of retaining member 86 relative to arm 90. Annular protrusion 128 may extend into annular recess 104 to prevent axial displacement of retaining member 86 relative to arm 90.
  • Axially extending protrusions 130 may extend into recesses 1 16 in end cap 108 to prevent relative rotation between bearing cup 84 and retaining member 86. Since retaining member 86 is axially fixed relative to arm 90, bearing cup 84 may also be rotationally fixed relative to arm 90. Bearing cup 84 may be axially retained between retaining member 86 and trunnion 106. More specifically, axially outward travel of bearing cup 84 may be limited by retaining member 86 and axially inward travel of bearing cup 84 may be limited by trunnion 106.
  • Flow diagram 200 illustrates assembly of universal joint 76 and may start at step 202 where spider 80 may be positioned relative to yoke assembly 82. Positioning spider 80 may generally include locating trunnion 106 within aperture 94. Once spider 80 is positioned, bearing cup 84 may be positioned within yoke assembly 82, as indicated at step 204. Positioning bearing cup 84 may generally include inserting bearing cup 84 into aperture 94 such that annular bearing wall 1 10 houses trunnion 106 therein. As indicated at step 206, a third axis 41 of spider 80 may be aligned with second axis 40.
  • Third axis 41 may be defined by a pair of trunnions 106 and may be aligned to be co- planar with second axis 40.
  • retaining member 86 may be formed, as indicated at step 208.
  • Forming retaining member 86 may include positioning a mold housing 132 over first face 96 of arm 90 is in communication with aperture 94.
  • Mold housing 132 may be in communication with a mold material from an injection material source 134 used to form retaining member 86.
  • the mold material may include a variety of plastics, such as a 30 percent long fiber reinforced nylon 6/6.
  • the mold material may be injected into recess 120 and may generally conform to the geometry of recess 120, including first and second recesses 100, 102 and annular recess 104.
  • retaining member 86 may generally be formed as a unitary member.
  • the mold material may further conform to the geometry on second side 1 14 of end cap 108, including recesses 1 16. Forming of retaining member 86 may be completed by curing the mold material within recess 120. Assembly of universal joint 76 may then be complete.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Motor Power Transmission Devices (AREA)

Abstract

A universal joint may include a spider, a yoke, a bearing cup, and a retaining member. The spider may include a plurality of trunnions and the yoke may include first and second arms. The first arm may include a first aperture therethrough receiving a first trunnion therein. The first arm may additionally include a first anti-rotation feature. The bearing cup may be disposed in the first aperture and may include a second anti-rotation feature. The retaining member may be located in the first aperture and may be engaged with the first and second anti-rotation features to prevent relative rotation between the bearing cup and the yoke.

Description

UNIVERSAL JOINT WITH BEARING CUP RETENTION MECHANISM AND METHOD
FIELD [0001] The present disclosure relates to vehicle universal joint assemblies, and more specifically to bearing retention mechanisms for universal joint assemblies.
BACKGROUND [0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
[0003] Propshafts are commonly employed for transmitting power from a rotational power source, such as the output shaft of a vehicle transmission, to a rotatably driven mechanism, such as a differential assembly. Generally, propshafts are connected to the rotational power source and rotatably driven mechanism via a constant velocity or universal joint. The universal joint is typically formed from two yokes, a spider that is disposed between the yokes, and bearings that are received on trunnions of the spider.
SUMMARY
[0004] A universal joint may include a spider, a yoke, a bearing cup, and a retaining member. The spider may include a plurality of trunnions and the yoke may include first and second arms. The first arm may include a first aperture therethrough receiving a first trunnion therein. The first arm may additionally include a first anti-rotation feature. The bearing cup may be disposed in the first aperture and may include a second anti-rotation feature. The retaining member may be located in the first aperture and may be engaged with the first and second anti-rotation features to prevent relative rotation between the bearing cup and the yoke. [0005] A method of assembling a universal joint assembly may include positioning a spider relative to a yoke, positioning a bearing cup relative to the yoke, and forming a retaining member. Positioning the spider may include locating the spider between first and second arms of the yoke and locating a trunnion of the spider within an aperture extending through the first arm. The bearing cup may be positioned within the aperture and the trunnion may be located therein. The retaining member may be formed in the aperture to engage a first anti-rotation feature on the first arm and a second anti-rotation feature on the bearing cup to prevent relative rotation between the bearing cup and the yoke.
[0006] Further areas of applicability will become apparent from the description provided herein. It should be understood that the description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.
DRAWINGS
[0007] The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way.
[0008] Figure 1 is a schematic illustration of a vehicle according to the present disclosure;
[0009] Figure 2 is a fragmentary perspective cut-away view of a rear axle portion of the vehicle of Figure 1 ; [0010] Figure 3 is a fragmentary perspective view of a propshaft assembly of the vehicle of Figure 1 ;
[0011] Figure 4 is a fragmentary exploded perspective view of the propshaft assembly of Figure 3;
[0012] Figure 5 is a fragmentary sectional view of the proshaft assembly of Figure 3;
[0013] Figure 6 is a fragmentary perspective view of a propshaft assembly of Figure 3 including a mold housing; and
[0014] Figure 7 is a flow diagram illustrating assembly of a universal joint of the propshaft assembly of Figure 6. DETAILED DESCRIPTION
[0015] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.
[0016] With reference to Figure 1 , a vehicle 10 may include an engine 12, a transmission 14, and a driveline 16. Transmission 14 may be driven by engine 12. Transmission 14 may include an output 18 and a gear reduction unit (not shown) in driving engagement with driveline 16. [0017] Driveline 16 may include a propshaft assembly 20, a rear axle assembly 22, and wheels 24. Propshaft assembly 20 may be coupled for rotation with transmission output 18. Drive torque may be transmitted from propshaft assembly 20 to rear axle assembly 22 where it may be selectively transmitted to wheels 24. With reference to Figure 2, rear axle assembly 22 may include a differential assembly 26 and left and right axle shaft assemblies 28, 30.
[0018] Differential assembly 26 may include a housing 32, a differential unit 34 and an input shaft assembly 36. Housing 32 may support differential unit
34 for rotation about a first axis 38 and may further support input shaft assembly
36 for rotation about a second axis 40 that may be generally perpendicular to first axis 38.
[0019] Housing 32 may include a wall member 42 that defines a central cavity 44 having a left axle aperture 46, a right axle aperture 48 and an input shaft aperture 68. Housing 32 may include a pair of axle tubes 52 that are fixedly mounted to wall member 42. Differential unit 34 may be disposed within central cavity 44 of housing 32 and may include a gearset 60. Gearset 60 may include a first side gear (not shown), a second side gear 64, and a plurality of pinions 65 engaged with the first side gear and second side gear 64. A flange 66, which may be employed to support a brake assembly (not shown), may be coupled to a distal end of both left and right axle shaft assemblies 28, 30. [0020] Input shaft assembly 36 may extend through input shaft aperture 68 and may be supported therein for rotation about second axis 40. Input shaft assembly 36 may be coupled for rotation with propshaft assembly 20 and may transmit drive torque to differential unit 34. More specifically, drive torque received by input shaft assembly 36 may be transmitted to differential unit 34 such that drive torque is distributed to the first side gear and second side gear 64, causing left and right axle shaft assemblies 28, 30 to rotate about first axis 38.
[0021] Left and right axle shaft assemblies 28, 30 may each include an axle shaft 70 that is supported for rotation in axle tube 52 about first axis 38. Each of axle shafts 70 may include an externally splined portion 72 that may meshingly engage a mating internally splined portion (not shown) that is formed into first and second side gears 64.
[0022] With reference to Figures 3-5, an end 62 of propshaft assembly 20 is shown and may include a shaft structure 74 and a universal joint 76. An opposite end of propshaft assembly 20 may be generally similar to end 62. Therefore, it is understood that the description of end 62 applies equally to the opposite end of propshaft assembly 20. A yoke assembly 82 may include a yoke 78 and universal joint 76 that includes a spider 80, a plurality of bearing cups 84, a plurality of roller bearings 85, and a plurality of retaining members 86.
[0023] Yoke 78 may be coupled to end 88 of shaft structure 74 with yoke assembly 82 extending therefrom. Yoke assembly 82 may include a pair of arms 90, 92 that are generally similar to one another. Therefore, arm 90 will be described with the understanding that the description applies equally to arm 92.
[0024] Arm 90 may include an aperture 94 extending therethrough from a first face 96 to a second face 98 (Figure 5), first and second recesses 100, 102 forming a first set of anti-rotation features and an annular recess 104 forming an axial retention feature. First and second recesses 100, 102 may be in communication with and may extend radially outwardly from aperture 94 at first face 96. Annular recess 104 may extend into an inner wall of aperture 94 at a location between first and second faces 96, 98 and may be in communication with first and second recesses 100, 102. [0025] Spider 80 may include a plurality of cylindrical projections or trunnions 106 housed within bearing cups 84. One of bearing cups 84 may be located within aperture 94. Bearing cup 84 may include an end cap 108 and an annular bearing wall 1 10 extending from a first side 1 12 thereof, forming a generally U-shaped cross section. First side 1 12 of end cap 108 may generally face arm 92 and annular bearing wall 1 10 may generally extend toward arm 92. A second side 114 of end cap 108 generally opposite to first side 112 may include a series of discrete recesses 1 16 extending axially into second side 1 14 to form a second set of anti-rotation features. Bearing cup 84 may also include a bore 1 18 housing trunnion 106 and containing roller bearings 85 that are disposed about trunnion 106.
[0026] End cap 108 may be located between first and second faces 96, 98 and may be spaced axially inwardly from first face 96, forming a recess
120 between second side 1 14 of end cap 108 and first face 96 of arm 90.
Retaining member 86 may be located within recess 120. Retaining member 86 may axially and rotationally locate bearing cup 84 relative to yoke assembly 82.
[0027] Retaining member 86 may include a body portion 122 having first and second radially outwardly extending protrusions 124, 126, an annular protrusion 128 extending radially outwardly from an outer perimeter thereof, and a series of discrete axially extending protrusions 130. Retaining member 86 may be seated within recess 120. First and second protrusions 124, 126 may be engaged with first and second recesses 100, 102, respectively, to prevent rotation of retaining member 86 relative to arm 90. Annular protrusion 128 may extend into annular recess 104 to prevent axial displacement of retaining member 86 relative to arm 90.
[0028] Axially extending protrusions 130 may extend into recesses 1 16 in end cap 108 to prevent relative rotation between bearing cup 84 and retaining member 86. Since retaining member 86 is axially fixed relative to arm 90, bearing cup 84 may also be rotationally fixed relative to arm 90. Bearing cup 84 may be axially retained between retaining member 86 and trunnion 106. More specifically, axially outward travel of bearing cup 84 may be limited by retaining member 86 and axially inward travel of bearing cup 84 may be limited by trunnion 106.
[0029] With reference to Figures 6 and 7, assembly of universal joint 76 will be described. Flow diagram 200 illustrates assembly of universal joint 76 and may start at step 202 where spider 80 may be positioned relative to yoke assembly 82. Positioning spider 80 may generally include locating trunnion 106 within aperture 94. Once spider 80 is positioned, bearing cup 84 may be positioned within yoke assembly 82, as indicated at step 204. Positioning bearing cup 84 may generally include inserting bearing cup 84 into aperture 94 such that annular bearing wall 1 10 houses trunnion 106 therein. As indicated at step 206, a third axis 41 of spider 80 may be aligned with second axis 40. Third axis 41 may be defined by a pair of trunnions 106 and may be aligned to be co- planar with second axis 40. [0030] Once spider 80 and bearing cup 84 are located relative to yoke assembly 82 and second and third axes 40, 41 are aligned, retaining member 86 may be formed, as indicated at step 208. Forming retaining member 86 may include positioning a mold housing 132 over first face 96 of arm 90 is in communication with aperture 94. Mold housing 132 may be in communication with a mold material from an injection material source 134 used to form retaining member 86. The mold material may include a variety of plastics, such as a 30 percent long fiber reinforced nylon 6/6.
[0031] The mold material may be injected into recess 120 and may generally conform to the geometry of recess 120, including first and second recesses 100, 102 and annular recess 104. As such, retaining member 86 may generally be formed as a unitary member. The mold material may further conform to the geometry on second side 1 14 of end cap 108, including recesses 1 16. Forming of retaining member 86 may be completed by curing the mold material within recess 120. Assembly of universal joint 76 may then be complete.
[0032] Those skilled in the art can now appreciate from the foregoing description that the broad teachings of the present disclosure can be implemented in a variety of forms. Therefore, while this disclosure has been described in connection with particular examples thereof, the true scope of the disclosure should not be so limited since other modifications will become apparent to the skilled practitioner upon a study of the drawings, the specification and the following claims.

Claims

CLAIMS What is claimed is:
1. A universal joint, comprising: a spider including a plurality of trunnions; a yoke including first and second arms, said first arm including a first aperture therethrough receiving a first of said trunnions therein, said first arm including a first anti-rotation feature; a bearing cup disposed in said first aperture and including a second anti-rotation feature; and a retaining member located in said first aperture and engaged with said first and second anti-rotation features to prevent relative rotation between said bearing cup and said yoke.
2. The universal joint of claim 1 wherein said bearing cup includes an end cap having an annular bearing wall extending axially from a first side thereof and generally toward said second aperture, a second side of said end cap being opposite said first side and including said second anti-rotation feature.
3. The universal joint of claim 2 wherein said second anti-rotation feature includes a first recess extending axially into said second side of said end cap.
4. The universal joint of claim 3 wherein said second anti-rotation feature includes first and second discrete recesses extending axially into said second side of said end cap.
5. The universal joint of claim 2 wherein said retaining member covers a portion of said second side of said end cap.
6. The universal joint of claim 5 wherein said retaining member is molded into said first aperture and conforms to said second side of said end cap to engage said second anti-rotation feature.
7. The universal joint of claim 2 wherein said first aperture includes an axial extent defined by first and second faces of said first arm, said end cap being located between said first and second faces and said retaining member being located between said second side of said end cap and said first face.
8. The universal joint of claim 7 wherein said first anti-rotation feature includes a recess formed in said first face of said first arm that extends radially outwardly from said first aperture.
9. The universal joint of claim 7 wherein said first aperture includes a recess located in a wall thereof at a location between said second side of said end cap and said first face, said retaining member extending into said recess to retain said retaining member axially within said first aperture.
10. The universal joint of claim 1 wherein said retaining member is a unitarily formed member.
1 1. The universal joint of claim 1 wherein said retaining member is formed from a polymer material.
12. A method, comprising: positioning a spider relative to a yoke to form a universal joint, said positioning including locating the spider between first and second arms of the yoke and locating a trunnion of the spider within an aperture extending through the first arm; positioning a bearing cup within the aperture and on the trunnion located therein; and forming a retaining member in the aperture to engage a first anti- rotation feature on the first arm and a second anti-rotation feature on the bearing cup to prevent relative rotation between the bearing cup and the yoke.
13. The method of claim 12 wherein said forming includes injecting an uncured material into the aperture and curing the injected material.
14. The method of claim 13 wherein the material includes a plastic.
15. The method of claim 13 wherein the first anti-rotation feature includes a first recess extending radially outwardly from the aperture in the first arm and the second anti-rotation feature includes a second recess extending axially into an end of the bearing cup, said injecting including injecting the uncured material into the first and second recesses.
16. The method of claim 12 wherein the bearing cup includes an end cap having an annular bearing wall extending axially from a first side thereof and receiving the trunnion therein, said positioning the bearing cup including locating the end cap within the aperture to define a recess between a first face of the first arm and a second surface of the end cap generally opposite the first surface thereof.
17. The method of claim 16 wherein said forming includes injecting an uncured material into the recess and curing the injected material.
18. The method of claim 16 wherein the recess includes a discrete radially outwardly extending portion forming the first anti-rotation feature.
19. The method of claim 16 wherein the second surface of the bearing cup includes an axially extending recess forming the second anti-rotation feature.
20. The method of claim 16 wherein the recess includes an annular recess located between the first face of the first arm and a second face of the first arm, said forming including providing engagement between the retaining member and the annular recess to axially retain the retaining member relative to the yoke.
PCT/US2008/071448 2007-08-02 2008-07-29 Universal joint with bearing cup retention mechanism and method Ceased WO2009018262A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112008002089T DE112008002089T5 (en) 2007-08-02 2008-07-29 Universal joint with bearing protection mechanism and method
BRPI0816473-8A BRPI0816473A2 (en) 2007-08-02 2008-07-29 Universal joint with bearing cup retention mechanism and method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/888,866 US7887422B2 (en) 2007-08-02 2007-08-02 Universal joint with bearing cup retention mechanism
US11/888,866 2007-08-02

Publications (1)

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WO2009018262A1 true WO2009018262A1 (en) 2009-02-05

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US (1) US7887422B2 (en)
BR (1) BRPI0816473A2 (en)
DE (1) DE112008002089T5 (en)
WO (1) WO2009018262A1 (en)

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US7887422B2 (en) 2011-02-15
US20090036223A1 (en) 2009-02-05
DE112008002089T5 (en) 2010-09-09

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