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WO1993000523A1 - Embrayage du type a double hyperboloide - Google Patents

Embrayage du type a double hyperboloide Download PDF

Info

Publication number
WO1993000523A1
WO1993000523A1 PCT/US1992/005295 US9205295W WO9300523A1 WO 1993000523 A1 WO1993000523 A1 WO 1993000523A1 US 9205295 W US9205295 W US 9205295W WO 9300523 A1 WO9300523 A1 WO 9300523A1
Authority
WO
WIPO (PCT)
Prior art keywords
outer race
rollers
race member
respect
inner race
Prior art date
Application number
PCT/US1992/005295
Other languages
English (en)
Inventor
Rudolf Richard Castens
Original Assignee
Hybo Science, 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 Hybo Science, Inc. filed Critical Hybo Science, Inc.
Publication of WO1993000523A1 publication Critical patent/WO1993000523A1/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
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
    • F16D41/061—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by movement having an axial component
    • 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
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
    • F16D41/08—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action
    • F16D41/086—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action the intermediate members being of circular cross-section and wedging by rolling

Definitions

  • This invention relates generally to couplings and more particularly to reversible or bidirectional unidirectional clutches of the hyperboloidal type.
  • Couplings comprising unidirectional clutches of the hyperboloidal type are becoming well known, principally as a result of the disclosure in my U.S. Patent Application Serial No. 07/418,795, and related applications.
  • These couplings generally comprise an inner race member defined as a sub- derivative hyperboloidal solid, and outer race member defined as a super derivative hyperboloidal solid, and a plurality of thrust transmitting rollers disposed in an annular volume defined by confronting surfaces of said inner and outer race members.
  • the rollers are all similarly inclined with respect to radial planes and make continuous contact along the curving inner and outer race surfaces due to their inclination angle.
  • the reversible unidirectional clutch is comprised of an inner race member defining an inner race surface having a sloping contour approximating a hyperboloid, a minimum diameter throat section lying on a radial plane which is a plane of symmetry dividing the inner race member into a first stage and a second stage.
  • the ends of the inner race member away from the throat section are referred to as first and second, opposed, larger diameter ends. These ends are preferably provided with integral annular shoulder members adapted to support a plurality of cylindrical thrust transmitting rollers axially thereof.
  • the outer race member is comprised of a super derivative hyperboloidal solid defining an outer race surface disposed concentrically about said inner race surface so as to form a volume therebetween.
  • the outer race surface approximates generally a hyperboloid accepting a distinct discontinuity through its central radial plane of symmetry. This discontinuity is formed by starting with a standard outer race member, removing a portion thereof by making cuts along a radial plane a distance x to one side of the radial plane of symmetry of the outer race and a second cut along a second radial plane a distance x to the other side of said radial plane of symmetry of said outer race member and sandwiching together the respective halves remaining.
  • the outer race member is reciprocally slidable with respect to the inner race member along a direction parallel to the axis of rotation of the clutch.
  • a plurality of thrust transmitting rollers are disposed in the space between the inner and outer race surfaces having a length corresponding generally to the distance between the first and second large diameter ends of the inner race member.
  • these rollers make continuous contact with the inner race surface along a line which winds somewhat helically with respect to the axis of rotation of said rollers.
  • first halves, or a first stage of said rollers only approximately one-half of the outer race surface makes contact with first halves, or a first stage of said rollers at any given time. This permits torque transmitting engagement with respect to attempted relative rotation of the inner and outer race members in one direction yet permit freewheeling in the opposite direction when the outer race is moved into the first position.
  • the other half of the outer race surface makes contact with the second halves, or second stage, of the rollers to obtain unidirectional clutch action in the opposite direction of attempted relative rotation of the inner and outer races.
  • the bidirectional clutch of the instant invention is formed by placing an adjustable biasing member between the two halves of the outer race member after the material referred to
  • both halves of the outer race member may be placed in thrust transmitting contact with the rollers to cause lock-up with the inner race as to both directions of attempted rotation, or alternatively, only one said half of the outer race member may be made to contact the first or second halves of the rollers, or further alternatively both outer race surfaces may be maintained out of contact with the rollers for freewheeling of the outer race with respect to the inner race as to directions of rotation.
  • Figure 1 is a perspective view of a reversible unidirectional clutch of the double-hyperboloidal-type wherein the outer race member is in a first position for thrust transmitting engagement with first halves of the rollers.
  • Figure 2 is a perspective view of a reversible unidirectional clutch of the double-hyperboloidal-type wherein the outer race member is in a second position for thrust transmitting engagement with the rollers in the opposite direction to that of Figure l.
  • Figure 3A is a partial cross-sectional perspective view of an unmodified outer race member prior to being modified for use with the instant invention.
  • Figure 3B is a partial cross-sectional perspective view of a portion of the modified outer race member used with the reversible clutch of Figures 1 through 4.
  • Figure 4 is a cross-sectional elevational view of Figure 1 turned on its side.
  • Figure 5 is a partial cross-sectional elevational view of an embodiment of a bidirectional clutch in accordance with the present invention.
  • Figure 6 is an alternative embodiment of a roller arrangement for use with the present invention.
  • Figures 1 and 2 show a reversible unidirectional clutch or coupling 10 of the hyperboloidal type comprised of an inner race member 12, which is a sub-derivative hyperboloidal solid defining an inner race surface 14.
  • Inner race member 12 has a cross-section of minimum diameter, or throat section, 16 lying on a radial plane S which is a plane of symmetry dividing the inner race member into a first stage I and a second stage II.
  • Inner race member 12 also has first and second larger diameter ends A and B, respectively, which generally define the termini of the operative portion of the clutch.
  • Clutch 10 is also provided with an outer race member
  • Said outer race member 20 concentrically disposed about inner race member 12.
  • Said outer race member 20 defines an outer race surface 22 which forms a confronting surface with inner race surface 14 and defines a generally annular void therebetween.
  • a plurality of thrust-transmitting rollers 30, one of which is shown in Figures 1 and 2 are disposed in said annular volume, all inclined at a similar angle with respect to radial planes. Said rollers contact the inner race surface along a line 32 which winds somewhat helically with respect to roller 30, said line 32 acting as a generator of surface 14 when rotated about the rolling axis R of the clutch.
  • Figure 3A shows a portion of an unmodified outer race member 20 having a height L and opposed first and second end portions A and B corresponding to the first and second large diameter portions A and B of inner race member 12.
  • a modified outer race member 20 having a height L - 2x and defining inner race surfaces 25 and 26 on either side of a margin of discontinuity 24 in outer race surface 22.
  • Outer race surface portions 25 and 26 correspond to first and second stage halves I and II, respectively.
  • Unmodified outer race member 20 is formed by rotating the line of contact 32 between roller 30 and the outer race member 20 through 360° about axis R.
  • an outer race if positioned about inner race member 12 with rollers 30 installed, would lock up in both directions and hence not function as a unidirectional clutch or freewheel.
  • FIG 4 shows the reversible unidirectional clutch in accordance with Figure 2 mountable to a rotatable shaft (not shown) wherein outer race member 20 is shown moved to the second stage engagement position wherein second halves 32 of rollers 30 are disposed in contact with second outer race surface portion 26 for unidirectional clutch action in the second direction of attempted relative rotation of the inner and outer races.
  • clutch 10 is reversible in that said clutch transfers torque between inner and outer races in one direction of rotation of said races when the outer race is moved to the first position, shown in Figure 1, and transfers torque in a second direction of attempted relative rotation of the inner and outer races when the outer race is in the second position, shown in Figures 2 and 4.
  • Figure 5 shows a bidirectional clutch constructed in accordance with the present invention wherein outer race member 40 is divided into a first half 42 and a second half 44 corresponding to the first and second stages, respectively.
  • a biasing means such as coil spring 46 is positioned between outer race halves 42 and 44, preferably recessed within recesses 48, 50.
  • first and second outer race stages 42 and 44 may be adjusted so that the clutch may act as a freewheel when the outer race halves 42 and 44 are brought into contact with one another and centered about plane S.
  • either or both of outer race halves 42 and 44 may be brought into contact with rollers 30 depending upon the position of said outer race halves with respect to the plane of symmetry S.
  • Figure 6 shows an alternative embodiment of a roller arrangement wherein rollers 30 are split into halves and divided by an annular ring 60.
  • thrust rings 62 and 64 are provided for slidable engagement of said rollers with respect to annular shoulders 70 and 72 associated with first and second ends A and B, respectively, of inner race member 12.
  • a plurality of rollers 55 is placed between annular ring 60 and annular shoulder 70.
  • a plurality of rollers 57 are further placed between annular ring 60 and annular shoulder 72.

Landscapes

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

Abstract

Embrayage unidirectionnel réversible du type hyperboloïde ayant une voie de roulement interne (12) dont la surface est voisine d'une hyperboloïde, et une voie de roulement externe (20) consistant en un élément hyperboloïde de superdérivation formant un volume dans lequel sont contenus des rouleaux de transmission de poussée (30). Le sens d'engagement peut être inversé en inversant l'obliquité des rouleaux de transmission de poussée (30) afin de permettre la rotation des voies de roulement interne et externe (12, 20) dans les deux sens ou, sélectivement, dans un sens ou dans l'autre, ou de permettre la rotation en roue libre de chaque voie de roulement dans les deux sens.
PCT/US1992/005295 1991-06-20 1992-06-22 Embrayage du type a double hyperboloide WO1993000523A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US71824091A 1991-06-20 1991-06-20
US718,240 1991-06-20

Publications (1)

Publication Number Publication Date
WO1993000523A1 true WO1993000523A1 (fr) 1993-01-07

Family

ID=24885350

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1992/005295 WO1993000523A1 (fr) 1991-06-20 1992-06-22 Embrayage du type a double hyperboloide

Country Status (1)

Country Link
WO (1) WO1993000523A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5895668A (en) * 1995-04-19 1999-04-20 Willett Versatile Equipment Pty. Ltd. Dough divider
DE10123082C1 (de) * 2001-05-11 2003-01-16 Friedrich-W Von Hackewitz Wälzkörperfreilauf
WO2017080549A1 (fr) * 2015-11-12 2017-05-18 Schaeffler Technologies AG & Co. KG Accouplement à action bidirectionnelle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1670197A (en) * 1924-03-24 1928-05-15 Humfrey Sandberg Co Ltd Free-wheel ratchet device
US1929782A (en) * 1931-12-09 1933-10-10 New Departure Mfg Co Clutch
US1955879A (en) * 1930-10-16 1934-04-24 Packard Motor Car Co Transmission mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1670197A (en) * 1924-03-24 1928-05-15 Humfrey Sandberg Co Ltd Free-wheel ratchet device
US1955879A (en) * 1930-10-16 1934-04-24 Packard Motor Car Co Transmission mechanism
US1929782A (en) * 1931-12-09 1933-10-10 New Departure Mfg Co Clutch

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5895668A (en) * 1995-04-19 1999-04-20 Willett Versatile Equipment Pty. Ltd. Dough divider
DE10123082C1 (de) * 2001-05-11 2003-01-16 Friedrich-W Von Hackewitz Wälzkörperfreilauf
US6640947B2 (en) 2001-05-11 2003-11-04 Von Hackewitz Friedrich-Wilhelm Rolling element clutch
WO2017080549A1 (fr) * 2015-11-12 2017-05-18 Schaeffler Technologies AG & Co. KG Accouplement à action bidirectionnelle

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