US3710768A - Rotary device for elements subjected to axial movement, particularly for valves in internal combustion engines - Google Patents

Rotary device for elements subjected to axial movement, particularly for valves in internal combustion engines Download PDF

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Publication number
US3710768A
US3710768A US00087300A US3710768DA US3710768A US 3710768 A US3710768 A US 3710768A US 00087300 A US00087300 A US 00087300A US 3710768D A US3710768D A US 3710768DA US 3710768 A US3710768 A US 3710768A
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United States
Prior art keywords
valve
spring
spring means
cap
rotator
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Expired - Lifetime
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US00087300A
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English (en)
Inventor
A May
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Teves Thompson and Co GmbH
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Teves Thompson and Co GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/32—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for rotating lift valves, e.g. to diminish wear

Definitions

  • Valve rotators for spring loaded engine poppet valves or the like operate during decreasing spring loads on the valve closing'cycle to effect valve rotation when the valve head is on or closely adjacent the valve seat.
  • the rotator has a valve spring loaded cover, a valve cap with circumferential inclined grooves each receiving a spring urged rolling member and an axially deflectable energy accumulating spring means between the cap and cover engaged by the rolling members.
  • the spring means is loaded by the cover, and'the rolling members are moved to the shallow ends of the inclined grooves unloading the springs acting thereagainst.
  • the valve spring load on the cover is decreased and the loaded energy accumulating spring means is released, forcing the rolling elements into the deeper ends of the grooves and effecting rotation between the valve cap and cover to rotate the valve.
  • the solution is accomplished by means effecting rotation during the closing period of the valves, by the valve spring load.
  • a spring element which is deformable in its axial direction is flattened by the valve spring force during its lifting period.
  • rolling or sliding elements running in grooves of the retainer cap, are caused to roll into the shallow ends of the grooves by the influence of tangentially arranged springs.
  • the spring element releases, activating a force on the rolling or sliding elements, moving those elements to the deeper ends of the grooves.
  • the inclined races are arranged circumferentially and concentric to an axis so that the movement of the spring element leads to a rotation around the axis.
  • the devices of this invention can be positioned between the valve spring and the engine body to rotate the valve spring which in turn rotates the valve, or can be positioned between the valvespring and the valve stem where it will directly rotate the valve.
  • the valve spring is compressed between a cover of the device and a separate retainer cap locked to the valve stem.
  • the valve spring is compressed between the engine body and the cover of the device which has its retainer cap locked to the valve stem.
  • the spring means of the device is loaded when the valve spring load on the cover of the device increases during the valve opening cycle, thereby relieving load on the rolling or sliding elements so thatthe tangential springs may urge these elements into the shallow ends of the grooves in the retainer cap.
  • valve spring load on the cover of the device is relieved, the spring means of the device exerts an axial load on the rolling I or sliding elements causing them to move into the deeper ends of the grooves, and this movement rotates either the cover or the retainer cap to effect rotation of the valve during the valve closing cycle.
  • FIG. 1 illustrates a preferred embodiment of the valve rotator when subjected to an upward force with FIG. 1a being a fragmentary cross-sectional view of the rotator taken along the indicated line of FIG. lb, which is a fragmentary plan cross-sectional view of the rotator, and FIG. 1c is a fragmentary cross-sectional view taken along the line A-B of FIG. la;
  • FIG. 2 illustrates the device of FIG. 1 when subjected to circumferential rotation from the position of FIG. 1;
  • FIG. 2a being a view similar to FIG. 1a, illustrating the rotated elements of the rotator in angular displaced position from FIG. 1;
  • FIG. 2b is a view similar to'FIG. lb, illustrating the rotational movement
  • FIG. 20 is a view similar to FIG. 1c,-illustrating the movement of the roller element in the inclined groove
  • FIGS. 1 and 2 in views-similar to 2a and 2c;
  • FIG. 4 illustrates yet another embodiment of the rotator of this invention
  • FIGS is a view similar to FIG. 4 and FIG. la, illustrating yet another embodiment of this invention.
  • FIG. 6 is a view similar to FIG. 1a, illustrating a modified form of this invention with a ball race interposed between rolling elements and-the spring element;
  • FIG. 7 is a view similar to FIG. la illustrating yet another modified form of this invention.
  • FIG. 8 is a view similar to FIG. la illustrating a spring-urged modified form of this invention.
  • FIG. 9 is a view similar to FIG. 8, illustrating the use of a raceway in the spring-urged disk.
  • FIG. 1 shows the rotatorwith the valve in fullyopened position withspring element 1 under tension
  • spring element 1 Using sliding elements instead of rolling elements, spring element 1 will just have the same travel as the sliding elements.
  • FIG. 2 shows the position when rotation has ended.
  • I Balls 2 are situated in the maximal attainable depth of grooves 4. They have been rolled from position 1 in FIG. lb to position 2 in FIG. 2b, thereby making rotation covering the angle L, on the rolling radius r oras shown in FIG. 20 a rolling distance r so that spring element 1 theoretically has been rotated for 2; and covered the rolling distance 2r.
  • FIG. 3 shows a version of rotator installed at tip-end of valve.
  • Bore of retainer cap 3 is a taper 24 to fit the retainer locks.
  • Retainer cap 3 rotates against spring element 1 which is in contact with cover 9.
  • Said cover 9 forms the support for valve spring 10 and is fixed against rotation by said valve spring 10.
  • FIG. 4 shows a device similar to FIG. 1 and FIG. 2 wherebya beaded flange 25 of cover 11 around a shoulder 26 of part 13 replaces safety or retainer ring 8.
  • FIG. 5 shows a version which combines elements of FIG. 3 and FIG. 4.
  • the beaded cover 12 acts also as a support for valve spring 10.
  • Base plate 5, FIG. 1 and FIG. 2 is replaced by the flange of part 13 having taper 24 to fit the retainer locks.
  • FIG. 6 shows a ball race 14 between rolling elements 2'and spring element 1, said ball race 14 reducing the contact pressure at spring element 1 as said spring element 1 now supports on a bulge 27 with linear contact.
  • FIG. 7 shows a design especially suitable if a high torque of the rotator is required.
  • Two spring washers 15a and 15b act as one spring element, said spring washers loading the base plate 5 indirect over anti-friction bearing 16.
  • the loads for the spring washers 15a and 15b are applied by one or a plurality of valve springs 10 and 18 and cover 19 acting as a spring sup port.
  • the friction between baseplate 5 and spring element 1 being reduced by the antifriction bearing 16 makes it sometimes necessary'to install an additional brake disk 20 between spring element 1 and retainer cap 3, to prevent uncontrolled rotation of the spring element 1 against retainer cap 3 in the loadingperiod.
  • FIG. 8 shows said spring element 1 consisting of a disk 21 into which a raceway 22 might be machined see FIG. 9 Said disk 21 supported by an antifriction bearing 16 and coil springs 23 orv any other elastical members.
  • the overall height of part 13 is so dimeng [claim as myinvention:
  • a rotator adapted for rotating spring loaded en gine poppet valves during the valve closing cycle which comprises a cap having circumferential grooves with inclined bottoms, rolling elements received in said grooves, springs urging the rolling elements toward the shallow ends of the grooves, a base plateon the cap, a cover adapted to be loaded by the valve spring, a spring means between the base plate of the cap and the cover loaded in the direction of the valve axis during the valve opening cycle, said rolling elements engageable with said spring means and urged by the springs acting thereagainst into the shallow ends of the grooves when the spring means is loaded during the valve opening cycle and said rolling elements being subject to increased load when the load on the spring means is decreased during the valve closing cycle thereby effecting relative rotation between the cap and the cover.
  • the rotator of claim 2 including anti-friction means between the spring means and the base plate.
  • the rotator of claim 1 including a flange on a I sleeveconnected to the retainer cap.
  • the rotator of claim 1 wherein the spring-means is a Belleville washer. i 7. The rotator of claim 1 wherein the spring means is a flat disc having a plurality of coil springs acting.
  • a rotator for rotating a spring loaded engine poppet valve during the valve closing cycle which comprises a first part to be loaded by the valve spring, a second part axially shiftable relative to the firstpart, an energy accumulator spring means urging the first and second parts into axially extended relationship and biased duringthe valve opening cycle, said second part having axially inclined circumferential grooves, rolling elements seated in said grooves, spring means urging I the rolling elements into the shallow ends of the grooves during the valve opening cycle, and said rolling elements being driven cireumferentially by release of energy from the energy accumulator spring means during the valve closing cycle to effect relative rotation of the first and second partsr

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Rolling Contact Bearings (AREA)
  • Springs (AREA)
US00087300A 1969-11-06 1970-11-05 Rotary device for elements subjected to axial movement, particularly for valves in internal combustion engines Expired - Lifetime US3710768A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691955820 DE1955820B1 (de) 1969-11-06 1969-11-06 Vorrichtung zum Drehen eines Tellerventils fuer Brennkraftmaschinen

Publications (1)

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US3710768A true US3710768A (en) 1973-01-16

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US00087300A Expired - Lifetime US3710768A (en) 1969-11-06 1970-11-05 Rotary device for elements subjected to axial movement, particularly for valves in internal combustion engines

Country Status (5)

Country Link
US (1) US3710768A (enrdf_load_stackoverflow)
DE (1) DE1955820B1 (enrdf_load_stackoverflow)
FR (1) FR2065093A5 (enrdf_load_stackoverflow)
GB (1) GB1291502A (enrdf_load_stackoverflow)
SE (1) SE358703B (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3890943A (en) * 1972-12-12 1975-06-24 Teves Thompson Gmbh Valve rotating devices
US4075987A (en) * 1975-04-23 1978-02-28 Trw Inc. Valve rotator
DE2757455A1 (de) * 1976-12-23 1978-06-29 Trw Inc Ventil-dreheinrichtung
DE2758199A1 (de) * 1977-01-24 1978-07-27 Trw Inc Ventil-dreheinrichtung
US4175505A (en) * 1976-11-11 1979-11-27 Honda Giken Kogyo Kabushiki Kaisha Valve rotator assembly
US4227493A (en) * 1979-02-07 1980-10-14 Trw Inc. Valve rotator
US4241706A (en) * 1976-11-11 1980-12-30 Honda Giken Kogyo Kabushiki Kaisha Valve rotator assembly
US6662770B2 (en) * 2000-03-28 2003-12-16 Michael Engesser Valve rotating device
EP1510661A1 (de) * 2003-08-25 2005-03-02 TRW Automotive GmbH Ventildrehvorrichtung
EP1811137A3 (de) * 2006-01-24 2010-03-10 TRW Automotive GmbH Ventildrehvorrichtung
JP2015158140A (ja) * 2014-02-21 2015-09-03 トヨタ自動車株式会社 バルブ回転装置
WO2019091605A1 (de) * 2017-11-13 2019-05-16 Federal-Mogul Valvetrain Gmbh Ventildrehvorrichtung
US11788440B2 (en) * 2020-04-23 2023-10-17 Federal-Mogul Valvetrain Gmbh Cover body for valve rotating device, corresponding valve rotating device and method for producing the cover body

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4538558A (en) * 1980-12-10 1985-09-03 Trw Inc. Valve rotating device
DE3149815A1 (de) * 1981-12-16 1983-07-21 Teves-Thompson Gmbh, 3013 Barsinghausen Vorrichtung zum drehen eines ventils fuer verbrennungskraftmaschinen
DE102018130098A1 (de) * 2018-11-28 2020-05-28 Man Truck & Bus Se Ventildrehvorrichtung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1467674A (en) * 1921-09-21 1923-09-11 Stanley F Mason Rotary valve attachment
US2686508A (en) * 1952-03-04 1954-08-17 Thompson Prod Inc Valve rotating device
GB715889A (en) * 1951-06-21 1954-09-22 Rolls Royce Improvements in or relating to valve rotators
US2775232A (en) * 1953-06-19 1956-12-25 Julius E Witzky Valve rotator
US2827886A (en) * 1956-01-19 1958-03-25 Gen Motors Corp Valve rotator
US2935058A (en) * 1958-01-03 1960-05-03 William D Dooley Valve rotating device
US3421734A (en) * 1965-12-22 1969-01-14 Trw Inc Valve rotating device
DE1293789B (de) * 1967-07-19 1969-04-30 Sulzer Ag Ventilanordnung einer Kolbenbrennkraftmaschine mit einer Drehvorrichtung

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1467674A (en) * 1921-09-21 1923-09-11 Stanley F Mason Rotary valve attachment
GB715889A (en) * 1951-06-21 1954-09-22 Rolls Royce Improvements in or relating to valve rotators
US2686508A (en) * 1952-03-04 1954-08-17 Thompson Prod Inc Valve rotating device
US2775232A (en) * 1953-06-19 1956-12-25 Julius E Witzky Valve rotator
US2827886A (en) * 1956-01-19 1958-03-25 Gen Motors Corp Valve rotator
US2935058A (en) * 1958-01-03 1960-05-03 William D Dooley Valve rotating device
US3421734A (en) * 1965-12-22 1969-01-14 Trw Inc Valve rotating device
DE1293789B (de) * 1967-07-19 1969-04-30 Sulzer Ag Ventilanordnung einer Kolbenbrennkraftmaschine mit einer Drehvorrichtung

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3890943A (en) * 1972-12-12 1975-06-24 Teves Thompson Gmbh Valve rotating devices
US4075987A (en) * 1975-04-23 1978-02-28 Trw Inc. Valve rotator
US4241706A (en) * 1976-11-11 1980-12-30 Honda Giken Kogyo Kabushiki Kaisha Valve rotator assembly
US4175505A (en) * 1976-11-11 1979-11-27 Honda Giken Kogyo Kabushiki Kaisha Valve rotator assembly
US4141325A (en) * 1976-12-23 1979-02-27 Trw Inc. Valve rotator
DE2757455A1 (de) * 1976-12-23 1978-06-29 Trw Inc Ventil-dreheinrichtung
US4154424A (en) * 1977-01-24 1979-05-15 Trw Inc. Valve rotator
DE2758199A1 (de) * 1977-01-24 1978-07-27 Trw Inc Ventil-dreheinrichtung
US4227493A (en) * 1979-02-07 1980-10-14 Trw Inc. Valve rotator
US6662770B2 (en) * 2000-03-28 2003-12-16 Michael Engesser Valve rotating device
EP1510661A1 (de) * 2003-08-25 2005-03-02 TRW Automotive GmbH Ventildrehvorrichtung
EP1705344A1 (de) * 2003-08-25 2006-09-27 TRW Automotive GmbH Ventildrehvorrichtung
EP1811137A3 (de) * 2006-01-24 2010-03-10 TRW Automotive GmbH Ventildrehvorrichtung
JP2015158140A (ja) * 2014-02-21 2015-09-03 トヨタ自動車株式会社 バルブ回転装置
WO2019091605A1 (de) * 2017-11-13 2019-05-16 Federal-Mogul Valvetrain Gmbh Ventildrehvorrichtung
US11306625B2 (en) * 2017-11-13 2022-04-19 Federal-Mogul Valvetrain Gmbh Valve rotating device
US11788440B2 (en) * 2020-04-23 2023-10-17 Federal-Mogul Valvetrain Gmbh Cover body for valve rotating device, corresponding valve rotating device and method for producing the cover body

Also Published As

Publication number Publication date
FR2065093A5 (enrdf_load_stackoverflow) 1971-07-23
SE358703B (enrdf_load_stackoverflow) 1973-08-06
GB1291502A (en) 1972-10-04
DE1955820B1 (de) 1971-08-26

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