| 摘要 |
A single-cam compound archery bow that includes a bow handle having projecting limbs, a control wheel rotatably mounted on an end of one of the limbs, and a power cam rotatably mounted on the end of the other limb. The power cam includes a cam base and a draw length adjustment module that is adjustably positioned on or adjustably replaceable on the cam base. A power cable segment is anchored at one end to the one limb and at a second end to the power cam at a position to wrap into and unwrap from a power cable groove on the draw length adjustment module. The sidewalls of the power cable groove are eliminated adjacent to the axis of the power cam to eliminate the undesirable feel of the power cable rubbing against the groove sidewalls at the limit of bow draw. A bowstring cable segment is anchored to the control wheel and to the power cam at positions to wrap into and unwrap from first and second bowstring let-out grooves on the control wheel and the power cam respectively. The bowstring cable segment may be anchored to the draw length adjustment module for adjusting position of this anchor simultaneously with adjustment of bow draw length, and thereby maintaining optimum stored energy in the bow without requiring adjustment at the control wheel. The power cam and control wheel are secured to the limbs by axles that are affixed to the cam and wheel, and rotatably extend through bearings in the limbs. Indicia are provided on the cam base for incremental registry with the periphery of the draw length adjustment module to facilitate adjustment.
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