Fixing frame for CPU cooling devices

A fixing device for a heat sink, comprising:

• a left-side frame body with a U-shaped structure from a top view, wherein said left-side frame body has a first long side, two first short sides, and first inner peripheries located at the intersections of said first long side and two first short sides, and wherein a first buckling piece is integrally formed under each of the first inner peripheries, and a slot is installed on a distal portion of each of said first short sides with a through hole thereon;
• a right-side frame body with a U-shaped structure from a top view, wherein said right-side frame body has a second long side, two second short sides, and second inner peripheries located at the intersections of said second long side and two second short sides, and wherein a second buckling piece is integrally formed under each of the second inner peripheries, and an extending wedge member is installed on a distal portion of each of said second short sides with a mid-passing hole formed thereon;
• and
• a pair of mounting pieces, wherein each of said mounting pieces passes through said through hole and said mid-passing hole to fix said extending wedge member that inserts into said slot, and wherein said left-side frame body and said right-side frame body define an opening for accommodating a CPU and a heat sink is installed on said first and second inner peripheries for contacting the CPU.