Heatsink assembly
A heatsink assembly includes a heatsink which has a base board and fins extending from a top thereof. The heatsink is directly put on the chip set. A positioning device includes a rectangular frame which is mounted to the heatsink and includes two first extensions and two second extensions extending from two pairs of opposite sides thereof. Each first extension has a hook extending from an inside thereof so as to hook the circuit board and the second extensions each have a first inclined surface engaged with the inclined surface defined in a periphery of the chip. Two flexible rods extend from the two opposite sides of the rectangular frame and each flexible rod has a pressing portion which presses on the top of the base board of the heatsink.
1. A heatsink assembly, comprising:
a heatsink having a board and multiple fins extending from a top of the board;
a chip set including a chip connected to a top of a circuit board, the heatsink mounted on the chip set;
a positioning device including a rectangular frame which has first two opposite sides, second two opposite sides and a through hole defined in a center thereof, each of the first two opposite sides having a first extension extending downward and each first extension having a hook extending from an inside thereof, each of the second two opposite sides having a second extension extending downward and two flexible rods extending inward and each flexible rod having a pressing portion extending perpendicularly downward from a distal end thereof, the rectangular frame mounted to the heatsink and the two respective hooks hooking an underside of the circuit board and the second extensions being in contact with the circuit board.
2. The heatsink assembly as claimed in claim 1 , wherein each of the second extensions includes a first inclined surface defined in an underside thereof and the chip includes a second inclined surface defined in a periphery thereof, the first inclined surfaces are engaged with the second inclined surface.
3. The heatsink assembly as claimed in claim 1 , wherein each of the second extensions includes multiple rods.
4. The heatsink assembly as claimed in claim 3 , wherein each of the multiple rods has a rectangular cross section, each of the multiple rods includes a first inclined surface defined in an underside thereof and the chip includes a second inclined surface defined in a periphery thereof, the first inclined surfaces are engaged with the second inclined surface.
5. The heatsink assembly as claimed in claim 3 , wherein each of the multiple rods has a circular cross section.