| 摘要 |
A heat sink fastener includes a locating bolt having a compressible barbed tip for securing the heat sink to the circuit board, and a buffer spring mounted on the locating bolt and adapted to force the heat sink downwards into close contact with the CPU at the circuit board, the buffer spring has a top ring defining a top receiving space, a bottom ring defining a bottom receiving space, and a double conical spiral spring body connected between the top ring and the bottom ring and receivable in the top receiving space and the bottom receiving space when compressed.
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