Abstract: The present invention provides a fastening device for attaching a heat sink to an electronic device package. The fastening device is unitarily formed to include a fastener and a C-shaped spring member. The spring member includes a center section and a pair of arcuate arms extending from opposite ends of the center section. The fastener perpendicularly extends from the center section. The spring member has a depressed surface for facilitating manual actuation. Each arm has a C-shaped flange at a distal end thereof.

Abstract: A clip for fastening a heat sink to a CPU mounted on a ZIF connector is made by stamping a metal sheet. The clip has an elongated body portion for pressing the heat sink toward the CPU. A first arm extends downward from a first end of the body portion and defines a hole about its free end for fitting with a first lug of the connector. A second arm extends downward from a second end of the body portion and defines a hole about its free end for fitting with a second lug of the connector. A handle portion is formed by plastic injection molding to be fixed to upper end of the second arm. The handle portion is used for receiving a manipulating force of the clip exerted directly by fingers of an operator. A pair of tabs integrally formed with the second arm is located below the handle portion and projects toward each other. A tool may be used to extend to abut the tabs via the handle portion, whereby the manipulating force of the clip may be exerted to the clip through the tool.

Abstract: A clip assembly comprises a body and a pair of separate fasteners. The body comprises a base for engaging with a heat sink, a pair of arms extending from opposite diagonal corners of the base, and a pair of end portions formed on free ends of the arms. An elliptical clearance hole is defined in each end portion for allowing movement of the fastener therein during engagement with a corresponding engaging hole of a printed circuit board. A pair of arcuate surfaces is formed proximate opposite transverse sides of each clearance hole. Each fastener comprises an intermediate main portion, and a head and an engaging portion formed on opposite ends of the main portion. The head has a transition section for engaging with the arcuate surfaces of the body to ensure vertical linear movement of the fastener during engagement with the corresponding engaging hole.

Abstract: An integrally formed clip comprises first and second engaging legs for engaging with a socket, a folded first squeezing portion for exerting an inward squeezing force, a folded second squeezing portion opposing the first squeezing portion for exerting an inward squeezing force and a downward pressing force, and a curved spring portion. The first squeezing portion includes an outside face upwardly extending from the first engaging leg and an inside face connected with the spring portion. The second squeezing portion connects to an opposite end of the spring portion and is L-shaped, comprising a vertical first folded section accepting an inward squeezing force and a horizontal second folded section for accepting a downward pressing force. The second engaging leg depends downward from the second operation section. Alternatively, the first squeezing portion can be identical to the second squeezing portion.

Abstract: A retention mechanism for securely engaging a heat sink with a CPU module comprises a base plate and a guiding member. The base plate has a H-shaped main body and two pairs of mounting legs upwardly extending from corners thereof for engaging with a CPU module and a heat sink. Each mounting leg forms a resilient tip on a free end thereof and a pair of cutouts proximate the resilient tip. The guiding member forms a shaft and a pair of latching arms outwardly extending from opposite ends of the shaft. A pair of elongate engaging slots is defined in each latching arm corresponding to the mounting legs. A receiving aperture is defined in communication with each engaging slot for insertion of the tip of the corresponding mounting leg therethrough. A pair of engaging tabs is formed on opposite sides of each engaging slot for engaging with the corresponding cutouts of the mounting legs.

Abstract: A heat dissipater for a CPU consists of a hood and a radiator. The hood has two side walls one defining a number of holes and the other forming a number of pegs. The radiator consists of a number of base plates and a number of fin plates each being interposed between two adjacent base plates. Each base plate forms a number of pegs on one side thereof and defines a number of recesses on the other side in alignment with the pegs. The pegs extend through a neighboring fin plate into recesses in a neighboring base plate thereby assembling the fin plates and the base plates together. When the radiator is mounted to the hood, the pegs in one side wall of the hood are fittingly received in the corresponding recesses of the base plate immediately adjacent to the side wall and the holes in the other side wall fittingly receive the corresponding pegs of the base plate immediately adjacent to the other side wall thereby assembling the hood and the radiator together to form the heat dissipater.