WO1990002886A1 - Joints universels de cardan - Google Patents

Joints universels de cardan Download PDF

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Publication number
WO1990002886A1
WO1990002886A1 PCT/GB1989/000999 GB8900999W WO9002886A1 WO 1990002886 A1 WO1990002886 A1 WO 1990002886A1 GB 8900999 W GB8900999 W GB 8900999W WO 9002886 A1 WO9002886 A1 WO 9002886A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing cup
bearing
seal
universal joint
hookes universal
Prior art date
Application number
PCT/GB1989/000999
Other languages
English (en)
Inventor
Leslie George Fisher
Original Assignee
Brd Company Limited
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 Brd Company Limited filed Critical Brd Company Limited
Publication of WO1990002886A1 publication Critical patent/WO1990002886A1/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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7809—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for needle 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
    • F16D3/40—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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C21/00—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement
    • F16C21/005—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement the external zone of a bearing with rolling members, e.g. needles, being cup-shaped, with or without a separate thrust-bearing disc or ring, e.g. for universal joints
    • 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

Definitions

  • This invention relates generally to Hookes universal joints. More particularly, the invention relates to the seals by which lubricant is retained within the bearings of a Hookes universal joint and dirt is excluded therefrom.
  • a Hookes universal joint as is well known, comprises two yokes, connected to one another by a cross member which has a first pair of oppositely extending journals pivotally received in -bearing cups held by spaced limbs of one of the yokes, and a second pair of oppositely extending journals, at right angles to the first pair of journals, pivotally received in bearing cups held by limbs of the other yoke.
  • each journal of the cross member is supported in its bearing cup by way of needle roller bearings.
  • At the open end of each bearing cup there is provided a seal which engages the journal to retain lubricant in the bearing cup and exclude dirt therefrom.
  • seals have usually taken the form of a separate component, held by the bearing cup.
  • seals of the type comprising an elastomeric ring affording a sealing lip, the elastomeric ring possibly being carried by a metal supporting ring, have been pressed into the open ends of the bearing cups, usually after the insertion of the required number of needle rollers into the cup.
  • Such provision of separate seals increases the cost and inconvenience of assembling the bearing. There is a risk of damage to the seals in the handling thereof. It is the object of the present invention to overcome or reduce these disadvantages.
  • a bearing cup for supporting a journal of a Hookes universal joint cross member, the bearing cup having a seal permanently secured thereto at its open end for cooperation with the journal.
  • the seal comprises an elastomeric seal affording a sealing lip, secured to the bearing cup by being moulded in situ thereon.
  • the seal may afford two sealing lips. This provides a more effective sealing action, with one sealing lip acting as a secondary seal and preventing dirt from reaching the other, main, sealing lip.
  • each sealing lip of the seal does not extend radially inwardly of the bearing cup beyond the internal wall surface thereof against which the needle rollers run. This facilitates automated loading of the needle rollers into the bearing cup.
  • the invention also provides a Hookes universal joint which includes bearing cups according to the invention as above set forth.
  • Figure 1 is an elevation of a Hookes universal joint
  • Figure 2 is a view, partly in section, of a unit pack for a Hookes universal joint according to the invention
  • Figures 3 and 4 are enlarged partly sectioned views showing detail of two different embodiments of bearing cup according to the invention.
  • a Hookes universal joint comprising two yokes 5, 6 of which yoke 5 has a flange 7 for torque transmission and yoke 6 is connected to a shaft part 8.
  • the yokes are connected to one another by a cross member part of which is visible in Figure 1 and is indicated at 10.
  • the cross member comprises a body and four journals extending outwardly therefrom, a first pair of oppositely directed journals being received in apertures in spaced limbs of one of the yokes of the joint and the other pair of journals, at right angles to the first pair, being received in apertures in spaced limbs of the other yoke of the joint.
  • the journals of the cross member are received in needle roller bearings in bearing cups which are held in the journals, and in Figure 1 is visible the aperture 9 in one of the limbs of the yoke 5, and a circlip by which the respective bearing cup is held in place in the aperture in the yoke limb.
  • the cross member of the joint, together with the bearing cups and associated components comprises what is usually referred to as a unit pack, which is available separately (i.e. without the yokes which go to make up the complete joint) to be used as a service replacement for those parts of the joint which are likely to wear in use.
  • a unit pack for a Hookes universal joint comprises the cross member 10 having four outwardly extending journals 11, adjacent journals being at right angles to one another. Each journal 11 is supported in its respective bearing cup 12, with needle roller bearings 13 interposed between an internal circumferential surface of the bearing cup and an external circumferential bearing surface of the journal.
  • Lubrication passages 15 extend through the journals of the cross member for introduction of lubricant to the bearings thereof, the lubricant passages being connected to a common entrance passage 16 which is threaded to receive a grease nipple.
  • FIG. 18 which has two generally radially inwardly extending sealing lips 19, 20. These engage spaced parts of a surface 21 at the root of the journal 11.
  • the sealing lip 19 acts as a main seal to retain lubricant in the region of the needle roller bearings 13, while the sealing lip 20 acts as a secondary seal against escape of lubricant and also prevents external dirt from reaching the lip 19.
  • Figure 4 shows a modification of the seal of Figure 3.
  • the open end of the bearing cup is of slightly different configuration but still includes a portion (23) of reduced wall thickness. To this portion is secured, by being moulded in situ thereon, an elastomeric seal 24 which has two radially inwardly extending sealing lips 25, 26.
  • the root portion of the journal has a region 27 which is of slightly different configuration from that of the Figure 3 embodiment, with an external surface engagable by the sealing lips 25, 26.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Sealing Of Bearings (AREA)

Abstract

Un godet de support (12) pour joint universel de Cardan comporte à son extrémité ouverte un joint d'étanchéité (18) fixé de manière permanente au godet de support par le fait qu'il est moulé in situ sur celui-ci, et pouvant être engagé à l'aide du tourillon (11) s'adaptant dans le godet pour retenir du lubrifiant.
PCT/GB1989/000999 1988-09-03 1989-08-29 Joints universels de cardan WO1990002886A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8821868.0 1988-09-03
GB888821868A GB8821868D0 (en) 1988-09-03 1988-09-03 Hookes universal joints

Publications (1)

Publication Number Publication Date
WO1990002886A1 true WO1990002886A1 (fr) 1990-03-22

Family

ID=10643788

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1989/000999 WO1990002886A1 (fr) 1988-09-03 1989-08-29 Joints universels de cardan

Country Status (3)

Country Link
GB (2) GB8821868D0 (fr)
IT (1) IT1233192B (fr)
WO (1) WO1990002886A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992547A (en) * 1958-06-05 1961-07-18 Birfield Eng Ltd Universal joints
US3439965A (en) * 1966-10-05 1969-04-22 Gelenkwellenbau Gmbh Needle-bearing shell,particularly for the star pins of universal joints
FR2106312A5 (fr) * 1970-09-26 1972-04-28 Schaeffler Ohg Industriewerk
US3803873A (en) * 1972-07-21 1974-04-16 Zeller Corp Universal joint repair assembly
FR2568330A1 (fr) * 1984-07-28 1986-01-31 Birfield Trasmissioni Dispositif d'etancheite pour le montage du croisillon d'un joint a croisillon
US4613317A (en) * 1983-11-07 1986-09-23 Nissan Motor Co., Ltd. Cardan universal joints
DE3639315C1 (de) * 1986-11-17 1988-04-14 Gelenkwellenbau Gmbh Vorrichtung zum Abdichten eines Waelzlagers,insbesondere von Lagerbuechsen eines Kreuzgelenkes

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB802491A (en) * 1955-03-11 1958-10-08 Borg Warner Improvements in or relating to joints embodying a trunnion and a bearing cup
CH358994A (de) * 1957-07-06 1961-12-15 Gelenkwellenbau Gmbh Einrichtung zur Abdichtung von Nadellagern, insbesondere für Kreuzgelenke an Kraftfahrzeugen
DE7006011U (de) * 1970-02-19 1970-07-02 Gelenkwellenbau Gmbh Rollenlager, insbesondere fuer die lagerung der sternzapfen von kreuzgelenken.
FR2183397A5 (fr) * 1972-05-05 1973-12-14 Glaenzer Spicer Sa
GB1389649A (en) * 1973-05-02 1975-04-03 Avtomobilny Z Im Leninskogo Ko Universial joint
DE2708137C2 (de) * 1977-02-25 1983-11-17 Löhr & Bromkamp GmbH, 6050 Offenbach Abdichtung für die Lagerkörper des Kreuzes eines Kreuzgelenkes
US4664643A (en) * 1985-11-01 1987-05-12 The Torrington Company Sealing device for a universal joint cross

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992547A (en) * 1958-06-05 1961-07-18 Birfield Eng Ltd Universal joints
US3439965A (en) * 1966-10-05 1969-04-22 Gelenkwellenbau Gmbh Needle-bearing shell,particularly for the star pins of universal joints
FR2106312A5 (fr) * 1970-09-26 1972-04-28 Schaeffler Ohg Industriewerk
US3803873A (en) * 1972-07-21 1974-04-16 Zeller Corp Universal joint repair assembly
US4613317A (en) * 1983-11-07 1986-09-23 Nissan Motor Co., Ltd. Cardan universal joints
FR2568330A1 (fr) * 1984-07-28 1986-01-31 Birfield Trasmissioni Dispositif d'etancheite pour le montage du croisillon d'un joint a croisillon
DE3639315C1 (de) * 1986-11-17 1988-04-14 Gelenkwellenbau Gmbh Vorrichtung zum Abdichten eines Waelzlagers,insbesondere von Lagerbuechsen eines Kreuzgelenkes

Also Published As

Publication number Publication date
GB8821868D0 (en) 1988-10-19
GB8919516D0 (en) 1989-10-11
IT8967736A0 (it) 1989-09-01
IT1233192B (it) 1992-03-16
GB2222446A (en) 1990-03-07

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