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Planetary gear train of automatic transmission for vehicle

  • US 10,641,360 B2
  • Filed: 11/02/2018
  • Issued: 05/05/2020
  • Est. Priority Date: 06/25/2018
  • Status: Expired due to Fees
First Claim
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1. A planetary gear train apparatus of an automatic transmission for a vehicle, the planetary gear train apparatus comprising:

  • an input shaft receiving torque of an engine;

    an output shaft outputting torque;

    a first planetary gear set including a first rotation element, a second rotation element, and a third rotation element;

    a second planetary gear set including a fourth rotation element, a fifth rotation element, and a sixth rotation element;

    a third planetary gear set including a seventh rotation element, an eighth rotation element, and a ninth rotation element;

    a fourth planetary gear set including a tenth rotation element, an eleventh rotation element, and a twelfth rotation element;

    a first shaft fixedly connected to the third rotation element and selectively connectable to the input shaft;

    a second shaft fixedly connected to the fourth rotation element and selectively connectable to the input shaft;

    a third shaft fixedly connected to the twelfth rotation element and the output shaft;

    a fourth shaft fixedly connected to the first rotation element, the sixth rotation element, and the eighth rotation element;

    a fifth shaft fixedly connected to the ninth rotation element and the tenth rotation element;

    a sixth shaft fixedly connected to the second rotation element, the fifth rotation element, and the eleventh rotation element; and

    a seventh shaft fixedly connected to the seventh rotation element.

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