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ES482275A1 - Plastics gear wheel for variable speed drive - has metal hub clamped to helically toothed shaft - Google Patents

Plastics gear wheel for variable speed drive - has metal hub clamped to helically toothed shaft

Info

Publication number
ES482275A1
ES482275A1 ES482275A ES482275A ES482275A1 ES 482275 A1 ES482275 A1 ES 482275A1 ES 482275 A ES482275 A ES 482275A ES 482275 A ES482275 A ES 482275A ES 482275 A1 ES482275 A1 ES 482275A1
Authority
ES
Spain
Prior art keywords
gear wheel
variable speed
speed drive
toothed shaft
metal hub
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
ES482275A
Other languages
Spanish (es)
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.)
UNICUM SA
Original Assignee
UNICUM SA
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 UNICUM SA filed Critical UNICUM SA
Publication of ES482275A1 publication Critical patent/ES482275A1/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
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/14—Construction providing resilience or vibration-damping
    • 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
    • F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
    • F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
    • F16H15/04—Gearings providing a continuous range of gear ratios
    • F16H15/06—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
    • F16H15/08—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B is a disc with a flat or approximately flat friction surface
    • F16H15/10—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B is a disc with a flat or approximately flat friction surface in which the axes of the two members cross or intersect
    • F16H15/12—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B is a disc with a flat or approximately flat friction surface in which the axes of the two members cross or intersect in which one or each member is duplicated, e.g. for obtaining better transmission, for lessening the reaction forces on the 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
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/021—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings toothed gearing combined with continuous variable friction gearing

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)
  • Friction Gearing (AREA)

Abstract

The stepless speed variation drive uses bi-conical rollers to transmit the drive between friction discs. It has input gears with teeth made from reinforced platicis. The gears have a steel hub(3', 4') which is clamped to a tapered shaft (5, 6). The hubs are moulded into plastic rings (17) with gear teeth formed around the periphery. The plastics is a polyimide which has a coefficient of expansion approximately equal to that of steel. Plastic gears reduce noise and the shocks due to acceleration when changing speed, and also prevent slip between the rollers and the friction discs.
ES482275A 1978-07-07 1979-07-06 Plastics gear wheel for variable speed drive - has metal hub clamped to helically toothed shaft Expired ES482275A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7820922A FR2430553A1 (en) 1978-07-07 1978-07-07 Plastics gear wheel for variable speed drive - has metal hub clamped to helically toothed shaft

Publications (1)

Publication Number Publication Date
ES482275A1 true ES482275A1 (en) 1980-03-01

Family

ID=9210705

Family Applications (1)

Application Number Title Priority Date Filing Date
ES482275A Expired ES482275A1 (en) 1978-07-07 1979-07-06 Plastics gear wheel for variable speed drive - has metal hub clamped to helically toothed shaft

Country Status (3)

Country Link
AR (1) AR219172A1 (en)
ES (1) ES482275A1 (en)
FR (1) FR2430553A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3503214A1 (en) * 1985-01-31 1986-08-07 INA Wälzlager Schaeffler KG, 8522 Herzogenaurach COMPONENT CONSTRUCTED FROM A POLYMER MATERIAL REINFORCED BY FIBER-SHAPED FILLERS
DE10149759A1 (en) * 2001-10-04 2003-05-08 Joma Polytec Kunststofftechnik Gear wheel and shaft connection involves using plastic gear wheel with injection-molded bearing bush pressed onto shaft
DE102017104159B4 (en) 2017-02-28 2021-01-21 Bayerische Motoren Werke Aktiengesellschaft Gear for a balance shaft and a balance shaft

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1310080A (en) * 1963-03-04
FR720281A (en) * 1930-08-05 1932-02-17 Thomson Houston Comp Francaise Silent Gear Improvements
FR1376401A (en) * 1963-12-05 1964-10-23 Fabrications Unicum Soc D Improvements to the adjustment device of friction speed variators in particular
DE1980468U (en) * 1967-12-16 1968-03-07 Basf Ag WHEEL BODY MADE OF THERMOPLASTIC PLASTIC.

Also Published As

Publication number Publication date
FR2430553A1 (en) 1980-02-01
AR219172A1 (en) 1980-07-31

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19991209