U.S. patent application number 14/677094 was filed with the patent office on 2015-07-30 for heat sink structure and manufacturing method thereof.
The applicant listed for this patent is Asia Vital Components Co., Ltd.. Invention is credited to Kuo-Sheng Lin, Sheng-Huang Lin.
Application Number | 20150209917 14/677094 |
Document ID | / |
Family ID | 50024326 |
Filed Date | 2015-07-30 |
United States Patent
Application |
20150209917 |
Kind Code |
A1 |
Lin; Sheng-Huang ; et
al. |
July 30, 2015 |
HEAT SINK STRUCTURE AND MANUFACTURING METHOD THEREOF
Abstract
A heat sink structure and a manufacturing method thereof. The
heat sink includes a main body having multiple main body connection
sections and multiple radiating fins each having a connection
section. The main body has a first end and a second end. The first
and second ends define a longitudinal direction. The multiple
radiating fins are placed in a mold. A mechanical processing
measure is used to high-speed impact the main body so as to thrust
the main body into the mold. Accordingly, the connection sections
of the radiating fins placed in the mold are high-speed thrust into
the main body connection sections and moved in the longitudinal
direction to the second end of the main body to tightly integrally
connect with the main body.
Inventors: |
Lin; Sheng-Huang; (New
Taipei City, TW) ; Lin; Kuo-Sheng; (New Taipei City,
TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Asia Vital Components Co., Ltd. |
New Taipei City |
|
TW |
|
|
Family ID: |
50024326 |
Appl. No.: |
14/677094 |
Filed: |
April 2, 2015 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
13610254 |
Sep 11, 2012 |
|
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14677094 |
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Current U.S.
Class: |
29/525 |
Current CPC
Class: |
F21V 29/773 20150115;
B23P 2700/10 20130101; H01L 21/4882 20130101; F28F 1/24 20130101;
B21K 25/00 20130101; B23P 19/027 20130101; B23P 15/26 20130101;
F28F 1/16 20130101; F28D 2021/0029 20130101; F28D 21/00 20130101;
F28F 2275/10 20130101; Y10T 29/49945 20150115; Y10T 29/49378
20150115; H01L 23/3672 20130101 |
International
Class: |
B23P 19/027 20060101
B23P019/027; B23P 15/26 20060101 B23P015/26 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 1, 2012 |
TW |
101127729 |
Claims
1-18. (canceled)
19. A manufacturing method of a heat sink, comprising steps of:
providing a mold, the mold having an inner circumference, an upper
surface and multiple splits, the inner circumference defining an
internal space, the multiple splits being radially formed around
the internal space in communication with the internal space and
downward extending from the upper surface; providing a main body
having a first end and a second end, the first and second ends of
the main body defining a longitudinal direction, multiple main body
connection sections being formed between the first and second ends
and distributed over a circumference of the main body, the first
end of the main body being aimed at the internal space; providing
multiple first radiating fins, the first radiating fins being
received in the splits, at least one first radiating fin being
placed in each split, each first radiating fin having a first
connection section, the first connection sections of the first
radiating fins protruding from the inner circumference of the mold;
and using a mechanical processing measure to high-speed impact the
main body so as to thrust the main body into the internal space and
move the main body relative to the multiple first radiating fins,
whereby the first connection sections of the first radiating fins
are high-speed thrust into the main body connection sections and
moved in the longitudinal direction to the second end to tightly
integrally connect with the main body.
20. The manufacturing method of the heat sink as claimed in claim
19, wherein the main body is temporarily positioned above the mold
and the mechanical processing measure is an air compression
apparatus for creating compressed air to thrust the main body into
the internal space.
21. The manufacturing method of the heat sink as claimed in claim
19, wherein a central body is disposed in the internal space in
alignment with the main body.
22. The manufacturing method of the heat sink as claimed in claim
19, wherein multiple second radiating fins are further provided,
the first and second radiating fins being together received in the
splits, at least one first connection section and at least one
second connection section being placed in each split, each second
radiating fin having a second connection section, the second
connection sections of the second radiating fins protruding from
the inner circumference of the mold to be thrust into the main body
connection sections and connected with the main body.
Description
[0001] This application claims the priority benefit of Taiwan
patent application number 101127729 filed on Aug. 1, 2012.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The present invention relates generally to a heat sink
structure and a manufacturing method thereof, and more particularly
to an annular heat sink structure and a manufacturing method
thereof.
[0004] 2. Description of the Related Art
[0005] The conventional cylindrical heat sink includes a
cylindrical body and multiple radiating fins connected to the
circumference of the cylindrical body. There are several
conventional measures for connecting the radiating fins to the
circumference of the cylindrical body. For example, a prior art
discloses a cylindrical heat sink and a method of tightly planting
radiating fins of the heat sink and an application device thereof.
According to the method, a mold seat drivable by a power source to
create stepped rotational operation is provided. A cylindrical body
is located on the mold seat. The circumference of the cylindrical
body is formed with multiple channels. A radiating fin assembly is
provided. The radiating fin assembly includes multiple radiating
fins arranged on a lateral side of the mold seat. The cylindrical
body intermittently rotates to drive and align the channels with
the radiating fins. A radiating fin insertion device is used to
push the radiating fins and sequentially insert and locate the
radiating fins into the channels of the cylindrical body. After the
radiating fins are fully inserted in the channels of the
cylindrical body, a successive tightening process is performed to
tightly integrally connect the radiating fins to the channels.
Accordingly, the radiating fins are located on the circumference of
the cylindrical body to form a heat sink.
[0006] Another prior art discloses a tightening method for a heat
sink. The heat sink includes a heat conduction base seat and a
radiating fin assembly. One surface of the base seat is formed with
multiple channels and guide grooves positioned between two
channels. The radiating fin assembly includes multiple radiating
fins. A mold having an internal space and a press end section is
provided. A tightening/connection process is performed to press and
insert the heat sink into the internal space of the mold. The press
end section is axially thrust into the guide grooves to compress
and deform the channels. At this time, the radiating fins are
pressed to tightly integrally connect with the deformed channels.
The above method is better than the pressing and riveting method of
the conventional heat sink. The breakage of the puncher or blade
mold can be effectively reduced to promote the ratio of good
products. Also, the precision and quality of the products are
increased. This method is conveniently applicable to various heat
sinks to form different types or shapes of heat sinks.
[0007] In both the above methods, the radiating fin is first
inserted into a channel and then a mold is used to press the guide
grooves on two sides of the channel to deform the channel and press
the radiating fin to tightly integrally connect the radiating fin
with the deformed channel. Such process has some problems as
follows: [0008] 1. The outer surface of the cylindrical body not
only is formed with the channels, but also is formed with the guide
grooves. The channels and the guide grooves are alternately
arranged. That is, the number of the channels per unit surface area
is reduced. As a result, the number of the mounted radiating fins
is reduced. [0009] 2. The manufacturing method includes numerous
steps so that the manufacturing time is quite long.
SUMMARY OF THE INVENTION
[0010] It is therefore a primary object of the present invention to
provide a heat sink structure and a manufacturing method thereof.
The main body and the radiating fins of the heat sink structure are
connected by means of high-speed impact.
[0011] It is a further object of the present invention to provide
the above heat sink structure, in which the main body connection
section of the first connection section is formed with a
raised/recessed non-planar surface to enhance connection
friction.
[0012] It is still a further object of the present invention to
provide the above heat sink structure and the manufacturing method
thereof, in which the number of the radiating fins per unit surface
area is increased.
[0013] It is still a further object of the present invention to
provide the above heat sink structure and the manufacturing method
thereof, in which the heat sink structure has better heat
dissipation efficiency.
[0014] It is still a further object of the present invention to
provide the above heat sink structure, in which at least one
radiating fin is connected to each main body connection
section.
[0015] It is still a further object of the present invention to
provide the above heat sink structure, in which the main body
connection sections are channels radially distributed over the
circumference of the main body. The main body connection sections
are normal to the surface of the main body or inclined to the
surface of the main body.
[0016] It is still a further object of the present invention to
provide the above heat sink structure, in which the radiating fin
is straight without bending or is formed with at least one bending
angle.
[0017] To achieve the above and other objects, the heat sink
structure of the present invention includes: a main body having a
first end and a second end, the first and second ends defining a
longitudinal direction, multiple main body connection sections
being formed between the first and second ends and distributed over
a circumference of the main body; and multiple first radiating fins
connected with the circumference of the main body, each first
radiating fin having a first connection section corresponding to
the main body connection section, a mechanical processing measure
being used to high-speed impact the main body toward the first
radiating fins, whereby the first connection sections of the first
radiating fins are high-speed thrust from the first end of the main
body into the main body connection sections and moved in the
longitudinal direction to the second end to tightly integrally
connect with the main body.
[0018] In the above heat sink structure, the main body connection
section is a connection channel or a rib, while the first
connection section is a first end edge of the first radiating fin
or a connection channel in adaptation to the main body connection
section. The main body connection section is connected with the
first connection section by means of press fit. The first
connection section corresponds to outer surface of the main body
and has a guide section. The guide section is a round angle or a
reverse angle or a right angle. The main body is formed with
multiple thrust sections in communication with the main body
connection sections.
[0019] In the above heat sink structure, one of the main body
connection section and the first connection section is formed with
a raised/recessed non-planar surface, while the other of the main
body connection section and the first connection section is formed
with a planar surface or a raised/recessed non-planar surface.
[0020] In the above heat sink structure, each main body connection
section has an opening and a bottom end. A straight extension line
is defined from the opening to the bottom end. The main body
connection sections are radially distributed over the circumference
of the main body with the straight extension line passing through
the center of the main body.
[0021] In the above heat sink structure, each main body connection
section has an opening and a bottom end. A straight extension line
is defined from the opening to the bottom end. The main body
connection sections are inclined to the surface of the main body
with the straight extension line not passing through the center of
the main body.
[0022] In the above heat sink structure, the first connection
section of the first radiating fin is formed with a first bending
root section.
[0023] In the above heat sink structure, the first radiating fin is
straight without bending or is formed with at least one first
bending angle.
[0024] The above heat sink structure further includes multiple
second radiating fins. Each second radiating fin has a second
connection section immediately adjacent to the first connection
section of the first radiating fin. Along with the first connection
section, the second connection section is high-speed thrust into
the main body connection section from the first end of the main
body to the second end in the longitudinal direction, whereby one
first connection section and one second connection section are
tightly integrally fitted in each main body connection section with
the first radiating fin adjacent to the second radiating fin.
[0025] In the above heat sink structure, the second connection
section is a second end edge of the second radiating fin.
[0026] In the above heat sink structure, the second radiating fin
is straight without bending or is formed with at least one second
bending angle. The angle of the first bending angle is equal to or
unequal to the angle of the second bending angle.
[0027] In the above heat sink structure, the first radiating fin is
made of a first material, while the second radiating fin is made of
a second material. The first material is a metal material and the
second material is also a metal material. The first material is
identical or not identical to the second material. The metal is
selected from a group consisting of gold, silver, copper, aluminum
and an alloy thereof.
[0028] In the above heat sink structure, the first radiating fin
has a first thickness and the second radiating fin has a second
thickness. The first thickness is equal to or unequal to the second
thickness.
[0029] In the above heat sink structure, the first connection
section of the first radiating fin is formed with a first bending
root section and the second connection section of the second
radiating fin is formed with a second bending root section.
[0030] The manufacturing method of the heat sink of the present
invention includes steps of: providing a mold, the mold having an
inner circumference, an upper surface and multiple splits, the
inner circumference defining an internal space, the multiple splits
being radially formed around the internal space in communication
with the internal space and downward extending from the upper
surface; providing a main body having a first end and a second end,
the first and second ends of the main body defining a longitudinal
direction, multiple main body connection sections being formed
between the first and second ends and distributed over a
circumference of the main body, the first end of the main body
being aimed at the internal space; providing multiple radiating
fins, the radiating fins being received in the splits, at least one
radiating fin being placed in each split, each radiating fin having
a connection section, the connection sections of the radiating fins
protruding from the inner circumference of the mold; and using a
mechanical processing measure to high-speed impact the main body so
as to thrust the main body into the internal space and move the
main body relative to the multiple radiating fins, whereby the
connection sections of the radiating fins are high-speed thrust
into the main body connection sections and moved in the
longitudinal direction to the second end to tightly integrally
connect with the main body.
[0031] In the above manufacturing method of the heat sink, the main
body is temporarily positioned above the mold and the mechanical
processing measure is an air compression apparatus for creating
compressed air to thrust the main body into the internal space. A
central body is disposed in the internal space in alignment with
the main body.
BRIEF DESCRIPTION OF THE DRAWINGS
[0032] The structure and the technical means adopted by the present
invention to achieve the above and other objects can be best
understood by referring to the following detailed description of
the preferred embodiments and the accompanying drawings,
wherein:
[0033] FIG. 1 is a perspective exploded view of the present
invention;
[0034] FIG. 2 is a perspective assembled view of the present
invention;
[0035] FIG. 3A is a plane view of the radiating fin of the present
invention;
[0036] FIG. 3B is a plane view of the radiating fin of the present
invention in another aspect;
[0037] FIG. 3C is a plane view of the radiating fin of the present
invention in still another aspect;
[0038] FIG. 4A is a top view of the main body of the present
invention;
[0039] FIG. 4B is a perspective view of the main body of the
present invention;
[0040] FIG. 4C is a top view showing the radiating fins of the
present invention;
[0041] FIG. 5A is a top view of the main body of the present
invention in another aspect;
[0042] FIG. 5B is a perspective view of the main body of the
present invention in the other aspect;
[0043] FIG. 5C is a top view showing the radiating fins of the
present invention in another aspect;
[0044] FIG. 5D is a perspective view of one single radiating fin of
the present invention in the other aspect;
[0045] FIG. 6A is a view showing that the main body connection
section of the main body of the present invention is formed with
raised/recessed non-planar surface;
[0046] FIG. 6B is an enlarged view of circled area of FIG. 6A;
[0047] FIG. 6C is a view showing that the first connection section
of the radiating fin of the present invention is formed with
raised/recessed non-planar surface;
[0048] FIG. 6D is an enlarged view of circled area of FIG. 6C;
[0049] FIG. 7A is a view showing that the first connection section
is connected to the main body connection section in a first
state;
[0050] FIG. 7B is a view showing that the first connection section
is connected to the main body connection section in a second
state;
[0051] FIG. 7C is a view showing that the first connection section
is connected to the main body connection section in the first
state, in which the radiating fin has a bending angle;
[0052] FIG. 7D is a view showing that the first connection section
is connected to the main body connection section in the second
state, in which the radiating fin has a bending angle;
[0053] FIG. 7E is a view showing that the first connection section
is connected to the main body connection section in the first
state, in which the radiating fin has a first bending root
section;
[0054] FIG. 7F is a view showing that the first connection section
is connected to the main body connection section in the second
state, in which the radiating fin has a first bending root
section;
[0055] FIG. 8A is a view showing that two radiating fins are
connected to one connection channel;
[0056] FIG. 8B is a view showing that the two radiating fins have
different thicknesses;
[0057] FIG. 8C is a view showing that the two radiating fins have
different bending angles;
[0058] FIG. 8D is a view showing that the two radiating fins have
equal bending angles;
[0059] FIG. 8E is a view showing that the two radiating fins have
different bending root sections;
[0060] FIG. 9 is a flow chart of the manufacturing method of the
present invention;
[0061] FIG. 10 shows a first step of the manufacturing method of
the present invention;
[0062] FIG. 11A shows a second step of the manufacturing method of
the present invention;
[0063] FIG. 11B shows a third step of the manufacturing method of
the present invention; and
[0064] FIG. 12 is a flow chart of another embodiment of the
manufacturing method of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0065] Please refer to FIGS. 1 and 2. FIG. 1 is a perspective
exploded view of the present invention. FIG. 2 is a perspective
assembled view of the present invention. The heat sink 10 of the
present invention includes a main body 12 and multiple first
radiating fins 13 connected to an outer circumference of the main
body 12. The main body has a first end 121 and a second end
122.
[0066] As shown in FIG. 1, the first and second ends 121, 122 of
the main body 12 define a longitudinal direction a. Referring to
FIG. 4B, multiple main body connection sections 123 are formed on
the surface of the main body and extend from the first end 121 to
the second end 122 in the longitudinal direction a. (The main body
connection sections 123 are distributed over the outer
circumference of the main body equivalently or inequivalently). The
main body 12 is formed with multiple thrust sections 124 near the
first end 121 in communication with the main body connection
sections 123 (as shown in FIG. 4B). The thrust sections 124 make it
easier to fit the first radiating fins 13 into the main body
connection sections 123 from the first end 121 of the main body 12.
The form of the thrust sections 124 is varied with the form of the
main body connection sections 123. This will be detailedly
described hereinafter.
[0067] As shown in FIGS. 1 and 2, the multiple first radiating fins
13 are annularly arranged around the surface of the main body 12.
Each first radiating fin 13 has a first connection section 131
corresponding to the main body connection section 123 of the main
body 12. The first connection section 131 can be thrust into the
main body connection section 123 from the first end 121 to the
second end 122 in the longitudinal direction a so as to integrally
connect the first radiating fin 13 with the main body 12.
[0068] Further referring to FIGS. 3A to 3C, the first connection
section 131 is formed with a right angle 132 or a guide section.
For example, the guide section is, but not limited to, a round
angle 133a or a reverse angle 133b. By means of the guide section,
the first connection section 131 can be easily and smoothly thrust
into the thrust section 124 and the main body connection section
123.
[0069] Please further refer to FIGS. 4A to 4C. Also referring to
FIG. 3A, in a preferred embodiment, the main body connection
section 123 is a connection channel and the thrust section 124 is
also a connection channel. The thrust section 124 has a width
slightly larger than that of the main body connection section 123
(as shown in FIGS. 4A and 4B). The first connection section 131 is
a first end edge of the first radiating fin 13 (as shown in FIGS.
3A and 4C). The first connection section 131 is connected to the
main body connection section 123 (as shown in FIG. 4B) by means of
press fit.
[0070] Please further refer to FIGS. 5A to 5D. In another
embodiment, the main body connection sections 123a are ribs and the
thrust sections 124a are also ribs. The thrust section 124a has a
width slightly smaller than that of the main body connection
section 123a (as shown in FIGS. 5A and 5B). The first connection
section 131a is a connection channel (as shown in FIGS. 5C and 5D).
The first connection section 131A is connected to the main body
connection section 123A (as shown in FIG. 5A) by means of press
fit.
[0071] Please further refer to FIGS. 6A and 6B. In another
embodiment, the main body connection section 123 is formed with a
raised/recessed non-planar surface 1231, while the first connection
section 131 has a planar surface (as shown in FIG. 4C).
Alternatively, as shown in FIGS. 6C and 6D, in another embodiment,
the first connection section 131 is formed with a raised/recessed
non-planar surface 1311 and the main body connection section 123
has a planar surface (as shown in FIG. 4A). This can enhance the
connection friction therebetween to avoid detachment of the first
connection section 131. The configurations of the main body
connection section and the first connection section are not limited
to the above embodiments. In still another embodiment, both the
main body connection section 123 and the first connection section
131 are formed with raised/recessed non-planar surfaces 1231, 1311,
which are mated with each other (as shown in FIGS. 6A to 6D).
[0072] Many embodiments of the main body connection sections 123 of
the main body 12 and the first radiating fins 13 will be described
hereinafter.
[0073] As shown in FIG. 7A, the main body connection sections 123
are connection channels radially distributed over the circumference
of the main body 12. The main body connection sections 123 are
normal to the surface of the main body 12. The first radiating fin
13 is straight from the first connection end 131 to an outer free
end without bending.
[0074] As shown in FIG. 7B, in another embodiment, the main body
connection sections 123 are connection channels radially
distributed over the circumference of the main body 12. The main
body connection sections 123 are inclined to the surface of the
main body 12. The first radiating fin 13 is straight from the first
connection end 131 to an outer free end without bending.
[0075] As shown in FIGS. 7C and 7D, in another embodiment, the
first radiating fin 13a has at least one end first bending angle
1234a. In the case that the heat sink is used in cooperation with a
cooling fan, the fluid passing through the cooling fan is easy to
go into the flow ways between the first radiating fins 13a and then
quickly flow out to carry away the heat.
[0076] As shown in FIGS. 7E and 7F, in another embodiment, the
first connection section 131c of the first radiating fin 13c is
formed with a first bending root section 135c connected in the main
body connection section 123, 123c of the main body 12. Similarly,
in the case that the heat sink is used in cooperation with a
cooling fan, the fluid passing through the cooling fan is easy to
go into the flow ways between the first radiating fins 13c and then
quickly flow out to carry away the heat.
[0077] Please now refer to FIG. 8A. Also referring to FIG. 1, in
another embodiment, the heat sink further includes multiple second
radiating fins 14. Each second radiating fin 14 has a second
connection section 141 immediately adjacent to the first connection
section 131 of the first radiating fin 13. Along with the first
connection section 131, the second connection section 141 is
high-speed thrust into the main body connection section 123 from
the first end 121 of the main body 12 to the second end 122 in the
longitudinal direction a. In this embodiment, the main body
connection section 123 is a connection channel, while the first
connection section 131 is a first end edge of the first radiating
fin 13 and the second connection section 141 is a second end edge
of the second radiating fin 14. That is, at least one first
connection section 131 and one second connection section 141 are
tightly fitted in one connection channel (the main body connection
section 123) with the first radiating fin 13 adjacent to the second
radiating fin 14.
[0078] Moreover, as shown in the drawings, the first radiating fin
13 is straight from the first connection section 131 to an outer
free end without bending. Also, the second radiating fin 14 is
straight from the second connection section 141 to an outer free
end without bending. The first radiating fin 13 has a first
thickness f1 and the second radiating fin 14 has a second thickness
f2. The first thickness f1 is equal to the second thickness f2.
[0079] As shown in FIG. 8B, in another embodiment, the first
thickness f1 of the first radiating fin 13 is unequal to the second
thickness f2 of the second radiating fin 14.
[0080] The first radiating fin 13 is made of a first material,
while the second radiating fin 14 is made of a second material. The
first material is a metal material and the second material is also
a metal material. The first material is identical or not identical
to the second material. The metal is selected from a group
consisting of gold, silver, copper and aluminum.
[0081] As shown in FIGS. 8C and 8D, in another embodiment, the
first radiating fin 13e has a first bending angle 134e, while the
second radiating fin 14e has a second bending angle 144e. The angle
of the first bending angle 134e is unequal to the angle of the
second bending angle 144e (as shown in FIG. 8C) or equal to the
angle of the second bending angle 144e (as shown in FIG. 8D).
[0082] As shown in FIG. 8E, in still another embodiment, the first
radiating fin 13f is formed with a first bending root section 135f
and the second radiating fin 14f is formed with a second bending
root section 145f. The first and second bending root sections 135f,
145f are connected in the main body connection section 123 of the
main body 12. In this embodiment, the main body connection section
123 is a connection channel, while the first connection section
131f is a first end edge of the first radiating fin 13f and the
second connection section 141f is a second end edge of the second
radiating fin 14f.
[0083] In still another embodiment, the first radiating fin 13
and/or the second radiating fin 14 are equivalently or
inequivalently tightly connected to the main body.
[0084] Please further refer to FIGS. 9, 10, 11A and 11B. FIG. 9 is
a flow chart of the manufacturing method of the present invention.
The manufacturing method of the present invention includes steps
of:
[0085] 61. providing a mold 40 as shown in FIG. 10, the mold 40
having an inner circumference 41, an upper surface 42 and multiple
splits 43, the inner circumference 41 defining an internal space 44
in which a central body 45 is disposed, the multiple splits 43
being radially formed around the internal space 44 in communication
with the internal space 44 and downward extending from the upper
surface 42;
[0086] 62. providing the main body 12 as shown in FIG. 10, the
first end 121 of the main body 12 being aimed at the central body
45 disposed in the internal space 44 of the mold 40, the main body
12 being temporarily positioned above the mold 40 with the first
end 121 of the main body 12 aimed at the central body 45;
[0087] 63. providing the multiple first radiating fins 13 as shown
in FIGS. 10 and 11A, the first radiating fins 13 being received in
the splits 43 with the first connection sections 131 protruding
from the inner circumference 41 of the mold 40, each the first
connection section 131 being aligned with one of the main body
connection sections 123 and one of the thrust sections 124; and
[0088] 64. using a mechanical processing measure (air compression
effect) to high-speed impact the main body 12 as shown in FIGS. 10,
11A and 11B to thrust the main body 12 toward the central body 45
into the internal space 44 and move the main body 12 relative to
the multiple first radiating fins 13, at this time, the first
connection sections 131 of the first radiating fins 13 being thrust
from the thrust sections 124 of the first end 121 of the main body
12 into the main body connection sections 123 and moved in the
longitudinal direction a to the second end 122 to tightly
integrally connect with the main body 12.
[0089] In step 64, an air compression apparatus 50 serves as a
power source for creating compressed air. In the instant of
relieving the compressed air, a power is generated to push and
drive the main body 12 to thrust into the internal space 44 at high
speed. In the meantime, the thrust sections 124 and the main body
connection sections 123 are thrust into the first connection
sections 131 from upper side of the mold 40 at high speed.
Accordingly, the main body 12 is integrally connected with the
first radiating fins 13 to form a heat sink 10. The central body 45
serves to ensure that the main body 12 can be downward thrust into
the internal space 44 in correct position along the central body
45. The air compression apparatus 50 is, but not limited to, an air
compressor.
[0090] Referring to FIG. 2, after step 64 is completed, the heat
sink 10 is taken out from the mold 40.
[0091] In the above embodiments, the main body 12 is a hollow body.
Alternatively, in another embodiment, the main body 12 can be a
solid body. In the case that the main body 12 is a solid body, no
central body is disposed in the internal space 44 of the mold
40.
[0092] FIG. 12 is a flow chart of a second embodiment of the
manufacturing method of the present invention. The second
embodiment is substantially identical to the first embodiment and
thus will not be repeatedly described hereinafter. The second
embodiment is different from the first embodiment in that after
step 62, the second embodiment of the manufacturing method of the
present invention includes steps of:
[0093] 73. providing the multiple first radiating fins 13 and
multiple second radiating fins 14, the first and second radiating
fins 13, 14 being received in the splits 43 with the first
connection sections 131 of the first radiating fins 13 and the
second connection sections 141 of the second radiating fins 14
protruding from the inner circumference 41 of the mold 40.
[0094] 74. using an air compression effect to high-speed impact the
main body to thrust the main body 12 toward the central body 45
into the internal space 44 and move the main body 12 relative to
the first and second radiating fins 13, 14, at this time, the first
connection sections 131 of the first radiating fins 13 and the
second connection sections 141 of the second radiating fins 14
being thrust from the thrust sections 124 of the first end 121 of
the main body 12 into the main body connection sections 123 and
moved in the longitudinal direction a to the second end 122 to
tightly integrally connect with the main body 12.
[0095] Referring to FIG. 8A, after step 74 is completed, the heat
sink 10 is taken out from the mold 40.
[0096] The present invention has been described with the above
embodiments thereof and it is understood that many changes and
modifications in the above embodiments can be carried out without
departing from the scope and the spirit of the invention that is
intended to be limited only by the appended claims.
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