U.S. patent application number 11/782700 was filed with the patent office on 2008-05-15 for combined assembly of fixing base and heat pipe.
Invention is credited to Chih-Hung Cheng, Ken Hsu.
Application Number | 20080110607 11/782700 |
Document ID | / |
Family ID | 38752180 |
Filed Date | 2008-05-15 |
United States Patent
Application |
20080110607 |
Kind Code |
A1 |
Cheng; Chih-Hung ; et
al. |
May 15, 2008 |
COMBINED ASSEMBLY OF FIXING BASE AND HEAT PIPE
Abstract
A combined assembly of a fixing base and an angled heat pipe
includes a fixing base and heat pipes. The fixing base has a plate
body. The bottom surface of the plate body is formed with opening
trough. An end of the opening trough is provided with a through
hole penetrating through the plate body. The opening trough is
formed with an enlarging portion. The width of the enlarging
portion is larger than that of a mouth of the opening trough. The
heat-releasing end penetrates out of the through hole, and the
heat-absorbing end is accommodated in the opening trough. A portion
of the heat-absorbing end abuts against the inner wall of the
opening trough, while the exposed portion thereof is flush with the
bottom surface of the fixing base.
Inventors: |
Cheng; Chih-Hung; (Wugu
Township, TW) ; Hsu; Ken; (Wugu Township,
TW) |
Correspondence
Address: |
HDSL
4331 STEVENS BATTLE LANE
FAIRFAX
VA
22033
US
|
Family ID: |
38752180 |
Appl. No.: |
11/782700 |
Filed: |
July 25, 2007 |
Current U.S.
Class: |
165/178 |
Current CPC
Class: |
F28D 15/0275
20130101 |
Class at
Publication: |
165/178 |
International
Class: |
F28F 9/013 20060101
F28F009/013 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 9, 2006 |
TW |
095219795 |
Claims
1. A combined assembly of a fixing base and heat pipe, comprising:
a fixing base having a plate body, a bottom surface of the plate
body being formed with an opening trough, the opening trough being
provided with a longitudinal through hole that penetrate through
the plate body, an inner wall of the opening trough being formed
with an enlarging portion, the width of the enlarging portion being
larger than that of a mouth of the opening trough, the mouth of the
opening trough being formed with a loose-proof section; and a heat
pipe having a heat-absorbing end and a heat-releasing end, the
heat-releasing end penetrating out of the through hole of the
fixing base, the heat-absorbing end being accommodated in the
opening trough, a portion of the heat-absorbing end abutting
against and contacting the inner walls of the opening trough, the
enlarging portion and the loose-proof section, and an exposed
portion of the heat-absorbing end being flush with the bottom
surface of the fixing base.
2. The combined assembly of a fixing base and heat pipes according
to claim 1, wherein the fixing base has a rectangular plate body
and two extending blocks protruding upwardly and outwardly from
both ends of the plate body, respectively.
3. The combined assembly of a fixing base and heat pipes according
to claim 1, wherein the enlarging portion is formed by two
correspondingly transverse recessed arcs.
4. The combined assembly of a fixing base and heat pipes according
to claim 1, wherein the enlarging portion is formed by two
correspondingly longitudinal recessed troughs and extends upwardly
to a top of the through hole.
5. The combined assembly of a fixing base and heat pipes according
to claim 1, wherein the heat pipe is formed into a L-shape.
6. The combined assembly of a fixing base and heat pipes according
to claim 1, wherein the heat pipe is formed into a U-shape.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a combined assembly of a
fixing base and heat pipe, and in particular to a combined assembly
for providing heat conduction for electronic elements.
[0003] 2. Description of Prior Art
[0004] With respect to the heat conduction of electronic
heat-generating elements, the industry nowadays utilizes heat pipes
because of their high heat-transferring capacity, light weight,
simple structure and versatility. The heat pipe can transfer a
large amount of heat and thus is very suitable for meeting the
demands for the heat conduction of the electronic products. The
heat pipe is usually combined with a fixing base, thereby
increasing the contact area between the heat pipe and the
electronic heat-generating element efficiently. Therefore, whether
the combination between the fixing base and the heat pipe is good
or bad may affect the heat-transferring performance and the
stability in fixation directly. Thus, it is an important issue in
this art to enhance the firm combination and tight contact between
the fixing base and the heat pipe.
[0005] Conventional combined assembly of the fixing base and the
heat pipe includes a fixing base and a heat pipe. The fixing base
has a plate body. The bottom surface of the plate body is formed
with a rectangular opening trough. The heat pipe has an end to be
heated and a heat-releasing end. The end to be heated is
accommodated in the opening trough, and the heat-releasing end is
formed above the plate body. A portion of the end to be heated
abuts against and contacts the inner wall of the opening trough,
while the other portion thereof is flush with the bottom surface of
the fixing base. With the above arrangement, the combined assembly
of the fixing base and the heat pipe can be formed.
[0006] However, in practical use, the conventional combined
assembly of the fixing base and the heat pipe still has the problem
as follows. Since the left and right inner walls of the opening
trough of the fixing base are vertical, the fixing force between
the fixing base and the heat pipe after compression and combination
is very small. As a result, the heat pipe and the fixing base can
be detached from each other or get loosened due to the collision
occurred during the assembling procedure (or during the process of
combining with heat-dissipating pieces). Therefore, the
heat-transferring performance and the stability in fixation are
poor, and thus needs to be improved.
SUMMARY OF THE INVENTION
[0007] The present invention is to provide a combined assembly of a
fixing base and heat pipe. One end of the heat pipe is accommodated
in an opening trough of the fixing base to abut against the inner
walls of the opening trough, enlarging portions and loose-proof
sections. In this way, the stability in fixation and tight contact
between the fixing base and the heat pipe can be assured so as to
enhance the total heat-transferring performance.
[0008] The present invention is to provide a combined assembly of a
fixing base and heat pipes, which includes a fixing base and at
least one heat pipe. The fixing base has a plate body. The bottom
surface of the plate body is formed with opening troughs. Both
sides of the opening trough are provided with longitudinal through
holes that penetrate through the plate body. The inner wall of the
opening trough is formed with enlarging portions. The width of the
enlarging portion is larger than that of a mouth of the opening
trough. The mouth of the opening trough is provided with
loose-proof sections. The heat pipe has an end to be heated and a
heat-releasing end. The heat-releasing end penetrates to the
outside of the through hole of the fixing base, and the end to be
heated is accommodated in the opening trough. A portion of the end
to be heated abuts against and contacts the inner walls of the
opening trough, the enlarging portions and the loose-proof
sections, and the other portion thereof is flush with the bottom
surface of the fixing base.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] FIG. 1 is a perspective view showing the external appearance
of the fixing base of the present invention;
[0010] FIG. 2 is a cross-sectional view of the fixing base of the
present invention;
[0011] FIG. 3 is an exploded perspective view showing the fixing
base and the heat pipe of the present invention;
[0012] FIG. 4 is an assembled cross-sectional view showing a state
before the fixing base and the heat pipe of the present invention
are not pressed together;
[0013] FIG. 5 is an assembled cross-sectional view showing a state
after the fixing base and the heat pipe of the present invention
have been pressed together;
[0014] FIG. 6 is an assembled cross-sectional view showing that the
present invention is applied to a heat-dissipating device of a
heat-generating element;
[0015] FIG. 7 is a perspective view showing the external appearance
of the fixing base of another embodiment of the present
invention;
[0016] FIG. 8 is an assembled cross-sectional view showing the
fixing base and the heat pipe of the present invention; and
[0017] FIG. 9 is a cross-sectional view taken along the line 9-9 in
FIG. 8.
DETAILED DESCRIPTION OF THE INVENTION
[0018] The detailed description and the technical contents of the
present invention will be made with reference to the accompanying
drawings. However, it should be understood that the drawings are
illustrative only, but not used to limit the present invention.
[0019] FIG. 1 and FIG. 2 are the perspective view and the
cross-sectional view showing the fixing base of the present
invention. The present invention provides a combined assembly of a
fixing base and a heat pipe. The fixing base 10 can be made of
aluminum, copper or non-metallic materials. The fixing base has a
rectangular plate body 11 and two L-shaped extending blocks 12
protruding upwardly and outwardly from both ends of the plate body
11. The bottom surface of the plate body 11 is formed with a
plurality of transverse opening troughs 13 that are parallel to one
another. Both sides of the opening trough 13 are provided with
longitudinal through holes 14 that penetrate through the plate body
11. The inner wall of each opening trough 13 is formed with an
enlarging portion 15. In the present embodiment, the enlarging
portion 15 is two transverse recessed arcs that correspond to each
other. In the horizontal direction, the transverse width of the
enlarging portion 15 is larger than that of the mouth of the
opening trough 13. Further, the month of the opening trough 13 is
formed with two loose-proof sections 16 that correspond to each
other.
[0020] Please refer to FIGS. 3 to 5, in which FIG. 3 is an exploded
perspective view showing the fixing base and the heat pipe of the
present invention, FIG. 4 is an assembled cross-sectional view
showing a state before the fixing base and the heat pipe of the
present invention are not pressed together, and FIG. 5 is an
assembled cross-sectional view showing a state after the fixing
base and the heat pipe of the present invention have been pressed
together. The fixing base 10 of the present invention is connected
and combined with heat pipes 20. Single heat pipe or a plurality of
heat pipes 20 may be provided. The number of the heat pipes depends
on the desired heat-conducting value. In the present embodiment,
there are three heat pipes. The heat pipe 20 may be formed into
L-shaped, U-shaped or other suitable shapes. The heat pipe 20 has a
heat-absorbing end 21 and a heat-releasing end 22. The interior of
the heat pipe is filled with a capillary structure and a working
fluid. Via the heat-transferring mechanism between the vapor phase
and the liquid phase of the working fluid, a rapid
heat-transferring effect can be achieved. The heat-releasing end 22
penetrates through the outside of the through hole 14 of the fixing
base 10, while the heat-absorbing end 21 is accommodated in the
opening trough 13. A portion of the heat-absorbing end 21 abuts
against and contacts the inner walls of the opening trough 13, the
enlarging portion 15 and the loose-proof section 16. The other
portion thereof is flush with the bottom surface of the fixing base
10.
[0021] During the assembling process, the heat-releasing end 22 of
the heat pipe 20 penetrates through the through hole 14 of the
fixing base 10. The lower half portion of the heat-absorbing end 21
is accommodated in the opening trough 13 of the fixing base 10, and
the upper half portion thereof is exposed to the outside of the
opening trough 13. A pressing tool 4 is used to press the upper
half portion of each heat pipe 20. In this way, the external shape
of the heat pipe 20 is compressed to deform, and thus abuts against
and contacts the inner walls of the opening trough 13, the
enlarging portion 15 and the loose-proof section 16 of the fixing
base 10. At the same time, the top surface of the heat pipe 20 is
flush with the bottom surface of the fixing base 10 (as shown in
FIG. 5). Finally, a grinding tool such as emery cloth or emery
wheel is used to grind the fixing base 10 and the heat-absorbing
end 21 of the heat pipe 20. Since the loose-proof section 16 is
formed in the mouth of the opening trough 13, the loose-proof
section 16 can still hold the heat-absorbing end 21 of the heat
pipe 20 tightly even though the fixing base 10 and the heat pipe 20
have been ground. Thus, the loosening or detachment between the
fixing base 10 and the heat pipe 20 can be prevented
efficiently.
[0022] With reference to FIG. 6, it is an assembled cross-sectional
view showing that the present invention is applied to a
heat-dissipating device of a heat-generating element. In the
present invention, the heat-releasing end 22 of the heat pipe 20
can be connected with a plurality of heat-dissipating pieces 5.
Since the connection between the fixing base 10 and the heat pipe
20 is firm, during the process of connecting the heat-dissipating
pieces 5 with the heat pipe 20, the heat pipe 20 cannot be pushed
by an axial force and thus the loosening and detachment between the
heat pipe 02 and the fixing base 10 cannot occur. Further, a
covering frame 6 covers at the outside of the heat-dissipating
pieces 5. One side of the covering frame 6 is connected to a fan 7.
Via the above arrangement, a heat-dissipating device is
obtained.
[0023] Please refer to FIGS. 7 to 9, in which FIG. 7 is a
perspective view showing the external appearance of the fixing base
of another embodiment of the present invention, FIG. 8 is an
assembled cross-sectional view showing the fixing base and the heat
pipe of the present invention, and FIG. 9 is a cross-sectional view
taken along the line 9-9 in FIG. 8. In addition to the aspect shown
in the previous embodiment, the fixing base 10 of the present
invention can be processed to have an enlarging portion 15 on the
inner wall of the opening trough 13. The enlarging portion 15 is
two longitudinal recessed troughs that correspond to each other and
extend upwardly over the top of the through hole 14. The mouth of
the opening trough 13 is formed with two loose-proof sections 16
that correspond to each other. During the process of combining the
heat pipe 20 with the fixing base 10, after the heat-absorbing end
21 of the heat pipe 20 is pressed, the external shape of the
heat-absorbing end 21 of the heat pipe 20 will be pressed to
deform, and thus abuts against and contacts the inner walls of the
opening trough 13, the enlarging portion 15 and the loose-proof
section 16 of the fixing base 10. At the same time, the bottom
surface of the heat-absorbing end 21 of the heat pipe 20 is flush
with the bottom surface of the fixing base 10.
[0024] According to the above, it can be appreciated that the
combined assembly of a fixing base and heat pipes in accordance
with the present invention indeed has industrial applicability,
novelty and inventive steps. Further, the construction of the
present invention has not been seen in the products of the same
kind or in public use. Therefore, the present invention completely
conforms to the requirements for a patent.
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