| 摘要 |
A gear assembly may include first and second gear wheels meshing with each other and having a meshing line. The meshing line is formed as a circular arc that is positioned between first and second curves to determine a meshing range of the meshing line, so as to extend from a point on the first curve positioned radially inside the second curve in a circumferential direction in which the second curve is radially outwardly spaced from the first curve and to reach a point on the second curve. The circular arc is centered on a center point that is offset from a reference straight line passing through a pitch point of first and second pitch circles of the first and second gear wheels and centers of the first and second pitch circles.
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