| 摘要 |
A heat sink assembly includes a heat spreader ( 10 ), a plurality of fins ( 12 ) extending from the spreader, fasteners ( 20 ) and securement sleeves ( 30 ) fixed to the fasteners. The fastener includes a head ( 200 ) and a shaft ( 204 ) having a threaded bottom end ( 208 ). The sleeve comprises a cylindrical wall ( 302 ), an upper open end ( 304 ) and a lower open end ( 306 ). The sleeve further has an annular pedestal ( 308 ) perpendicularly connected with the wall and extending in the lower open end. The head is received in the wall and contacts the pedestal. The shaft extends through the spreader. A compressed spring ( 22 ) is providing between the head and the spreader for urging the spreader downwardly to engage with a heat generating electronic device.
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