Fixing element for heat dissipation and method of mounting the same

A mounting method applied to a fixing element for a heat dissipation device, the fixing element comprising a screw having a screw head and a plurality of male threads provided on an upper and a lower end, an annular groove formed axially above the male threads for receiving a retaining ring therein, and a spring fitted on the screw between the screw head and the male threads, the spring having a top end and a bottom end, with the bottom end pressed against the retaining ring;

• and a sleeve being a tube-like structure having two open ends and internally defining a receiving space, in which the screw and the spring fitted thereon are received, the sleeve being provided with two limiting units for pressing on the top end of the spring, so that the spring is held in the receiving space in a compressed state, the mounting method comprising the following steps:
• preparing a heat dissipation device, and mounting the fixing elements to four predetermined corners on the heat dissipation device;
• placing the heat dissipation device over a bare die heat source, and screwing the fixing elements preliminarily to the bare die heat source to temporarily hold the heat dissipation device to a top of the bare die heat source;
• and
• elastically releasing all springs elastically compressed in the sleeves on the heat dissipation device synchronously to provide evenly distributed downward forces, which push the heat dissipation device to lightly press on the bare die heat source.