CPU heat sink attachment

Details CPU heat sink attachment CPU heat sink attachment

1999-08-06

2001-07-10

Ramirez, Ramon O. (Department: 3632)

Supports

Brackets

C361S704000

Reexamination Certificate

active

06257533

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to an attachment, and particularly to an attachment for attaching a heat sink to a CPU package.
During operation of a computer, large quantities of heat are generated by electrical elements thereof. Since the processing speed of a CPU is becoming increasingly quick, more heat is generated thereby. Thus, cooling the CPU package is an important consideration facing computer designers.
Taiwan Patent Application No. 86202156 discloses a conventional heat sink attachment. Referring to
FIG. 1
, the conventional attachment
1
comprises a locking plate
4
and spring sections
2
,
3
. A first arm
6
extends downwardly from the spring section
2
, and a first opening
7
is formed in the first arm
6
proximate a free end thereof. A second arm
5
extends from the spring section
3
opposite the first arm
6
, and a second opening
8
is formed proximate a free end of the second arm
5
. Thus, the first and second openings
7
,
8
are engageable with a pair of locking elements of a socket (not shown) for securing a heat sink to a CPU package. However, the attachment is resilient and has no element to disassemble from the CPU package, so the attachment is unable to provide enough force for securing the heat sink to a CPU package and difficult to be unassembled from the heat sink, thus a new design for a heat sink attachment is requisite.
BRIEF SUMMARY OF THE INVENTION
A main object of the present invention is to provide a heat sink attachment for reliably securing a heat sink to a CPU package and facilitating disassembly process.
To fulfill the above mentioned object, an attachment comprises an upper and a lower locking elements. The upper locking element comprises a main plate, a folded section, a locking section and a locking tip. The main plate forms a pair of protrusions on each lateral edge thereof. The folded section extends from an end of the main plate attaching to a bottom surface thereof. The locking section extends downwardly from the folded section, and the locking tip is formed at a free end of the locking section. The lower locking element comprises a spring section, a first and second arms. A pair of first ears is formed at an end of the spring section, and a pair of second ears is formed at middle portion of the spring section. Each ear has a hole. The first arm is formed proximate the first ear of the spring section, and the second arm is formed at an opposite end of the spring section. The first arm has a locking slot corresponding to the locking tip of the upper locking element. The protrusions engage with the holes of the ears, and the locking tip engages with the locking slot of the first arm.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.


REFERENCES:
patent: 5600540 (1997-02-01), Blomquist
patent: 5771960 (1998-06-01), Lin
patent: 5933326 (1999-08-01), Lee et al.
patent: 6025994 (2000-02-01), Chiou
patent: 6061239 (2000-05-01), Blomquist
patent: 6108207 (2000-08-01), Lee
patent: 6111752 (2000-08-01), Huang et al.
patent: 6118661 (2000-09-01), Lo
patent: 6158707 (2000-12-01), Chien

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