| 摘要 |
<p>A fastener (80) for use with a rotary peening flap (10) to secure at least two overlapping strap (16) portions together. The fastener (80) includes a shaft (90) for extending through apertures in the overlapping strap (16) portions, a head adjoining one end of the shaft (90), and an elastic washer (94) at the other end of the shaft (90). The head of the fastener (80) forms an included edge angle of greater than approximately 90° at the intersection of the bottom and side surfaces of the head. The fastener (80) maintains the overlapping portions of the strap (16) under compression to prevent peening debris form becoming lodged between the fastener (80) and the strap (16) and between the overlapping portions of the strap (16) and to prevent slippage between the strap (16) and the fastener (80) and between the strap portions. The elastic washer (94) has sufficient elasticity to maintain compression as the strap (16) portions become substantially thinner over prolonged use. A peening flap (10) incorporating the fastener (80) is also disclosed, as is a hub assembly incorporating the peening flap (10) and fastener (80).</p> |
