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IDLER GEAR FOR A GENERATOR

  • US 20100327684A1
  • Filed: 06/30/2009
  • Published: 12/30/2010
  • Est. Priority Date: 06/30/2009
  • Status: Active Grant
First Claim
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1. A gear set for a generator, comprising:

  • a first gear having a first set of involute teeth circumferentially located about a center axis of rotation; and

    a second gear axially spaced from the first gear and coupled with the first gear such that the first gear and the second gear co-rotate, the second gear having a second set of involute teeth circumferentially located about the center axis of rotation, each tooth of the first set of involute teeth and the second set of involute teeth including an involute surface that extends between a tooth tip and a tooth base, each involute surface including at least reference points A-D thereon with reference point A near the base, reference point D near the tip, reference point B between reference points A and D, and reference point C between reference points B and D, the reference points A-D having respective roll angles, ε

    A-D, between a corresponding first line that is perpendicular to the involute surface at the given reference point A-D and a second line that is tangent at a reference point that lies on a terminal end of the involute surface at the tooth base to a reference base circle having a center origin at the center axis, for a diametrically smaller one of the first gear and the second gear the roll angle ε

    A is 1.51°

    -3.51°

    , the roll angle ε

    B is 7.64°

    -9.64°

    , the roll angle ε

    C is 26.03°

    -28.03°

    , and the roll angle ε

    D is 32.16°

    -34.16°

    , and for a diametrically larger one of the first gear and the second gear the roll angle ε

    A is 15.02°

    -17.02°

    , the roll angle ε

    B is 16.7°

    -18.7°

    , the roll angle ε

    C is 21.73°

    -23.73°

    , and the roll angle ε

    D is 23.41°

    -25.41°

    .

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