Heat dissipation device
AssigneesFu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.
InventorsWei-Cheng Nie, Hong-Cheng Yang
Life of this patent
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Abstract
A heat dissipation device includes a heat sink in which a plurality of mounting holes are defined, and a plurality of fasteners. Each of the fasteners includes a shaft with one end thereof received in a corresponding mounting hole, a sleeve enclosing the shaft and received in the mounting hole, and a fixture engaging the shaft and pressing the heat sink and a bottom end of the sleeve. The sleeve is filled between the end of the shaft and an inner face of the heat sink defining the mounting hole to perform an engagement of the shaft in the mounting hole of the heat sink, thereby fastening the fasteners to the heat sink. The shaft has a screw extending out of the mounting hole for mounting the heat sink on a printed circuit board.
Claims15
A heat dissipation device, comprising:
- a heat sink comprising a conductive plate in which a plurality of mounting holes are defined;
- and
- a plurality of fasteners disposed in the conductive plate, each of the fasteners comprising:
- a shaft with one end thereof received in a corresponding mounting hole of the conductive plate of the heat sink;
- a sleeve enclosing the shaft and received in the corresponding mounting hole;
- and
- a fixture engaging the shaft and pressing the conductive plate;
- wherein the sleeve is filled between the end of the shaft and an inner face of the conductive plate surrounding the mounting hole to perform an engagement of the shaft and the mounting hole of the heat sink, thereby fastening the fasteners to the heat sink.
A heat dissipation device for cooling an electronic device mounted on a printed circuit board, comprising:
- a heat sink comprising a conductive plate thermally contacting the electronic device and defining a plurality of mounting holes in a bottom surface thereof and a plurality of fins in thermal connection with the conductive plate;
- and
- a plurality of fasteners disposed in the conductive plate and extending through the printed circuit board and engaging a back plate below the printed circuit board to mount the heat sink on the electronic device, each of the fasteners comprising:
- a shaft with a first end thereof received in a corresponding mounting hole, and a second end thereof extending through the printed circuit board and engaging with the back plate;
- a sleeve enclosing the first end of the shaft and received in the mounting hole;
- and
- a fixture engaging the second end of the shaft to press the conductive plate and located above the printed circuit board;
- wherein the shaft is movable in the mounting hole to reach a locking position in which the first end of the shaft expands the sleeve to make the sleeve abutting against an inner face of the conductive plate surrounding the mounting hole, whereby the fastener is secured in the mounting hole of the heat sink.
Dependencies are inferred from the claim text.