Method of combining heat sink and heat conductor and combination assembly of the same

A method of combining a heat sink and a heat conductor comprising steps:

• (a) Preparing a heat sink and a columnar heat conductor, wherein said heat sink has a sleeve at its center and a plurality of cooling fins extending radially outwards from an outer periphery of said sleeve, said sleeve has an increasing inner diameter from its upper section to its lower section, said heat conductor has an increasing outer diameter from its top end to its bottom end, and an upper inner diameter of said sleeve is smaller than a top outer diameter of the heat conductor;
• (b) Inserting said heat conductor into said sleeve from its lower side until said heat conductor enables its lateral sidewall to contact an inner periphery of said sleeve;
• and
• (c) Forcing said heat conductor into said sleeve for a predetermined depth, whereby said sleeve is forced to expand its inner periphery to hold the heat conductor tight by its own resilience.