GB1004853A - Control means for epicyclic power transmission mechanisms - Google Patents

Control means for epicyclic power transmission mechanisms

Info

Publication number
GB1004853A
GB1004853A GB19261A GB19261A GB1004853A GB 1004853 A GB1004853 A GB 1004853A GB 19261 A GB19261 A GB 19261A GB 19261 A GB19261 A GB 19261A GB 1004853 A GB1004853 A GB 1004853A
Authority
GB
United Kingdom
Prior art keywords
disc
sleeve
gear
sun
extension
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.)
Expired
Application number
GB19261A
Inventor
Eric Albert Whateley
Sydney Henry Ashby
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.)
Auto Transmissions Ltd
Original Assignee
Auto Transmissions Ltd
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 Auto Transmissions Ltd filed Critical Auto Transmissions Ltd
Priority to GB19261A priority Critical patent/GB1004853A/en
Priority to DE19621425732 priority patent/DE1425732A1/en
Publication of GB1004853A publication Critical patent/GB1004853A/en
Expired 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
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0293—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being purely mechanical
    • 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
    • F16H—GEARING
    • F16H2716/00—Control devices for speed-change mechanisms of planetary gearings, with toothed wheels remaining engaged, e.g. also for devices to simplify the control or for synchronising devices combined with control devices
    • F16H2716/02—Control devices for speed-change mechanisms of planetary gearings, with toothed wheels remaining engaged, e.g. also for devices to simplify the control or for synchronising devices combined with control devices the control being mechanical

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Structure Of Transmissions (AREA)

Abstract

1,004,853. Variable-speed gear; clutches. AUTO TRANSMISSION Ltd. Dec. 29, 1961 [Jan. 3, 1961], Nos. 192/61 and 5211/61. Headings F2C and F2D. An overdrive gear for a vehicle transmission comprises an input carrier 3 having planet pinions meshing an output ring gear 8 and a reaction sun gear 6, and the gear teeth may be helically cut. The sun gear can be clutched to the ring gear by coned friction surfaces on discs 10, 12 gripping an extension 23 of the ring gear between them, or the sun can be braked by applying hydraulic pressure to a cylinder 35 to actuate an annular piston 34 non-rotatably mounted in the gearing housing and having a friction surface engageable with an external conical surface 45 of the disc 10. As shown the discs 10, 12 are splined to a sleeve 7 on which the sun 6 is formed, the disc 12 being formed with an integral internally splined sleeve 16, and the disc 10 being formed with a sleeve 19 having tongues 22 projecting through slots 20 in the sleeve 16 into engagement with straight splines 21 on the sleeve 7. The plates 10, 12 are urged together by springs 26 reacting between the disc 10 and a spring carrier 27 fast with the sleeve 16 of disc 12. When hydraulic pressure is applied to cylinder 35, the piston 34 engages the disc 10 and moves it axially to release the extension 23, and at the same time the levers 38 are pivoted about pins 39 and their inner ends move the spring carrier 27 and hence disc 12 rightwards to release the extension 23. The engaging pressure of the clutch varies with the torque transmitted due to the helical teeth of the epicyclic gearing, the sleeve 7 sliding axially and acting through spring sleeves 48 or 18 to increase the engaging pressure of disc 10 or 12 according to the direction of torque transmission. In a modification (Fig. 2, not shown), the sun gear has straight teeth, and the sleeve 7 has helical splines 21 engaging the friction disc 10 only so that the engaging pressure is torque responsive. In another modification the sleeve 7 is unsplined and has a radial peg projecting into a V-shaped slot in the sleeve 19 of disc 10 so that an additional engaging pressure is applied to the disc 10 irrespective of the direction of torque transmission.
GB19261A 1961-01-03 1961-01-03 Control means for epicyclic power transmission mechanisms Expired GB1004853A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB19261A GB1004853A (en) 1961-01-03 1961-01-03 Control means for epicyclic power transmission mechanisms
DE19621425732 DE1425732A1 (en) 1961-01-03 1962-01-03 Switching device for epicyclic planetary change gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19261A GB1004853A (en) 1961-01-03 1961-01-03 Control means for epicyclic power transmission mechanisms

Publications (1)

Publication Number Publication Date
GB1004853A true GB1004853A (en) 1965-09-15

Family

ID=9700032

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19261A Expired GB1004853A (en) 1961-01-03 1961-01-03 Control means for epicyclic power transmission mechanisms

Country Status (1)

Country Link
GB (1) GB1004853A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2413403A1 (en) * 1973-03-21 1975-01-23 Srm Hydromekanik Ab TWO-STAGE PLANETARY GEAR, IN PARTICULAR FOR USE IN CONNECTION WITH A HYDRODYNAMIC TORQUE CONVERTER
JPS5666543A (en) * 1979-11-05 1981-06-05 Toyota Motor Corp Speed change gear for vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2413403A1 (en) * 1973-03-21 1975-01-23 Srm Hydromekanik Ab TWO-STAGE PLANETARY GEAR, IN PARTICULAR FOR USE IN CONNECTION WITH A HYDRODYNAMIC TORQUE CONVERTER
JPS5666543A (en) * 1979-11-05 1981-06-05 Toyota Motor Corp Speed change gear for vehicle

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