| 摘要 |
<p>Drive sprocket for chain saws, comprising an outer ring (11) transmitting force on its outside (13) to a chain and with a large internal gear surface (15) on its inside meshing with a smaller external gear surface (16) on the drive shaft or on an inner ring (17) supported by the drive shaft, and one or more distance elements (19, 20, 24, 27) maintaining the center of the outer ring (11) at a certain distance from the center of the drive shaft, allowing the center of the outer ring to move along a curved path around the drive shaft to compensate for changes in chain length and to automatically ensure a tension force in the chain.</p> |
