Abstract: A heat sink is disclosed to include a plurality of metal plate members arranged in a stack, each metal plate member having a rectangular body, a first sidewall and a second sidewall at two sides of the rectangular body, a T-shaped mounting hole in the rectangular body adjacent to the first sidewall, and a lug downwardly extending from the first sidewall, the lug having a head and a neck connected between the head and the first sidewall. By inserting the lug of one first plate member into the T-shaped mounting hole of one second plate member and then deforming the first sidewall of the second plate member, the plate members are firmly secured together, forming the desired heat sink.

Abstract: A heat sink is disclosed to include a plurality of metal plate members arranged in a stack, each metal plate member having a rectangular body, a first sidewall and a second sidewall at two sides of the rectangular body, a T-shaped mounting hole in the rectangular body adjacent to the first sidewall, and a lug downwardly extending from the first sidewall, the lug having a head and a neck connected between the head and the first sidewall. By inserting the lug of one first plate member into the T-shaped mounting hole of one second plate member and then deforming the first sidewall of the second plate member, the plate members are firmly secured together, forming the desired heat sink.

Abstract: A heat sink is disclosed to include a plurality of plate members arranged in a stack, each plate member having a rectangular body, a mounting hole in the rectangular body near one lateral side, a first sidewall perpendicularly extending from one lateral side of the rectangular body, a second sidewall perpendicularly extending from the other lateral side of the rectangular body, a through hole formed in the first sidewall and connected to the mounting hole, and a hook downwardly extending from the bottom side of the first sidewall. The hook of one plate member is inserted into the mounting hole of another plate member and then deformed to secure the two plate members firmly together.

Abstract: A heat sink includes a plurality of plate members stacked one by one. The plate member has a plurality of mounting holes at the body thereof and a plurality of bottom mounting lugs each having a through hole such that the mounting lug is elastically deformable. The bottom mounting lugs of one metal plate member can be elastically deformed and inserted into the mounting holes of another metal plate member to have the metal plate members be secured together.

Abstract: A heat sink includes a plurality of plate members combined together. Each plate member has a flat rectangular body provided with mounting holes, two sidewalls extending from a first side and a second side of the flat rectangular body, and a plurality of mounting lugs respectively provided at bottom side of the sidewalls in such a manner that the mounting lugs of one plate member are insertable into the mounting holes of another plate member. Each mounting lug is provided with a retaining spring strip for stopping against a bottom side of the flat rectangular body of another plate member upon insertion with the respective mounting lugs of one plate member into the mounting holes of another plate member.

Abstract: A heat sink includes a plurality of metal plate members fastened together in a stack. Each metal plate member includes a main body, a first sidewall extending from a first side of the main body and having a through hole, a second sidewall extending from a second side of the main body, a retaining lug extending from the first sidewall and having a retaining hole, and a protrusion suspended in the through hole such that the retaining lug of one metal plate member is insertable into the through hole of another metal plate member, and the protrusion of one metal plate member is engageable into the retaining hole of the retaining lug of another metal plate member.

Abstract: A heat sink includes a plurality of first fins each having a flat base and two parallel sidewalls perpendicularly extending from two sides of the flat base in same direction and having a first height, and a plurality of second fins each having a flat base arranged in parallel to the flat base of each first fin and two sidewalls perpendicularly extending from two sides of the flat base of the second fin in same direction and having a second height, which is substantially not equal to the first height.

Abstract: A heat sink is formed of a plurality of plate members stacked together. Each plate member includes a body, a first sidewall extending from a lateral side of the body, a second sidewall extending from another lateral side of the body, two retaining members which are provided at the first sidewall and have respectively a recessed portion at an inner side thereof and a hooked portion at an outer side thereof, and two mounting through holes formed in the body for insertion of the retaining members of another plate member such that the plate members can be firmly rapidly assembled together.