U.S. patent application number 13/454602 was filed with the patent office on 2013-10-24 for heat-dissipation unit and method of manufacturing same.
The applicant listed for this patent is Sheng-Huang Lin. Invention is credited to Sheng-Huang Lin.
Application Number | 20130277031 13/454602 |
Document ID | / |
Family ID | 49379033 |
Filed Date | 2013-10-24 |
United States Patent
Application |
20130277031 |
Kind Code |
A1 |
Lin; Sheng-Huang |
October 24, 2013 |
HEAT-DISSIPATION UNIT AND METHOD OF MANUFACTURING SAME
Abstract
A heat-dissipation unit includes a base and a plurality of
radiating fins. The base has a plurality of grooves formed thereon,
and each of the grooves has an open top and closed bottom. The
radiating fins respectively have a heat-radiating zone and a bent
zone. When a pressure is applied onto the bent zones, the bent
zones respectively form an assembling section in the grooves to
tightly fit therein. With the above arrangements, the radiating
fins can be firmly locked to the base without the need of welding,
so that the manufacturing cost is reduced and the problem of a
damaged base due to assembling can be avoided. A method of
manufacturing the above-described heat-dissipation unit is also
disclosed.
Inventors: |
Lin; Sheng-Huang; (New
Taipei City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Lin; Sheng-Huang |
New Taipei City |
|
TW |
|
|
Family ID: |
49379033 |
Appl. No.: |
13/454602 |
Filed: |
April 24, 2012 |
Current U.S.
Class: |
165/185 ;
29/890.03 |
Current CPC
Class: |
Y10T 29/4935 20150115;
B23P 2700/10 20130101; H01L 23/3672 20130101; H01L 2924/0002
20130101; B23P 11/00 20130101; H01L 21/4882 20130101; H01L
2924/0002 20130101; H01L 2924/00 20130101; B23P 15/26 20130101 |
Class at
Publication: |
165/185 ;
29/890.03 |
International
Class: |
F28F 7/00 20060101
F28F007/00; B23P 15/26 20060101 B23P015/26 |
Claims
1. A heat-dissipation unit, comprising: a base having a plurality
of grooves formed thereon, and each of the grooves having an open
top and a closed bottom; and a plurality of radiating fins, each of
which including a heat-radiating zone and a bent zone perpendicular
to the heat-radiating zone and forming an assembling section; the
bent zones being correspondingly positioned on the open tops of the
grooves, and the assembling sections being correspondingly tightly
fitted in the grooves.
2. The heat-dissipation unit as claimed in claim 1, wherein each of
the grooves further has a first lateral side and a second lateral
side correspondingly raised from two opposite lateral edges of the
closed bottom.
3. The heat-dissipation unit as claimed in claim 2, wherein each of
the grooves further has at least one inward and downward inclined
zone.
4. The heat-dissipation unit as claimed in claim 3, wherein the
inclined zone is formed on at least one of the first lateral side
and the second lateral side of the groove.
5. A method of manufacturing heat-dissipation unit, comprising the
steps of: providing a base having a plurality of grooves formed
thereon, and each of the grooves having an open top and a closed
bottom; providing a plurality of radiating fins, each of which
having a heat-radiating zone and a bent zone perpendicular to the
heat-radiating zone, and flatly positioning the bent zones on the
open tops of the grooves; and applying a pressure onto the bent
zones, so that the bent zones respectively form an assembling
section in the grooves to tightly fit therein, bringing the
radiating fins to lock to the base.
6. The heat-dissipation unit manufacturing method as claimed in
claim 5, wherein the assembling sections are tightly fitted in the
grooves through mechanical process.
7. The heat-dissipation unit manufacturing method as claimed in
claim 6, wherein the mechanical process is stamping.
8. The heat-dissipation unit manufacturing method as claimed in
claim 5, wherein each of the grooves further has a first lateral
side and a second lateral side, which being correspondingly raised
from two lateral edges of the closed bottom of the groove.
9. The heat-dissipation unit manufacturing method as claimed in
claim 8, wherein each of the grooves further has at least one
inward and downward inclined zone.
10. The heat-dissipation unit manufacturing method as claimed in
claim 9, wherein the inclined zone is formed on at least one of the
first lateral side and the second lateral side of the groove.
11. The heat-dissipation unit manufacturing method as claimed in
claim 10, further comprising a step after the step of forming the
assembling sections to further apply a pressure onto the assembling
sections for the same to fitly bear on the inclined zones, so that
the radiating fins are firmly locked to the base.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to a heat-dissipation unit and
a method of manufacturing same; and more particularly to a
heat-dissipation unit and a method of manufacturing same that
enables more firmly locking of radiating fins to a base at reduced
manufacturing cost without causing the problem of a damaged
base.
BACKGROUND OF THE INVENTION
[0002] An electronic element in an electronic device, such as, for
example, a central processing unit, usually produces a large amount
of heat during operation thereof and accordingly has a raised
temperature. In the case the produced heat is not properly
dissipated, it will cause overheat and unstable operation of the
electronic element to result in stop or even crash of the whole
electronic device. Meanwhile, with the constantly increased
operating speed of various kinds of electronic elements, the heat
produced by them also largely increases. Thus, the heat sink
employed in the electronic device for dissipating the produced heat
becomes more and more important.
[0003] Conventional heat sinks can be classified into two major
types, namely, an integrally formed heat sink and an assembled heat
sink formed from a plurality of stacked radiating fins. The
radiating fins are bent at respective one edge to form connecting
sections, which are welded to a base so that the radiating fins are
connected to the base to form the heat sink. The welding of the
radiating fins to the base results in complicated assembling
procedures and does not meet the current requirement for
environmental protection. Therefore, there were manufacturers who
provide an insertion-type heat sink by inserting the radiating fins
onto the base. The conventional insertion-type heat sink 1 usually
includes a base 10 and a plurality of radiating fins 11. The base
10 is formed on one face with a plurality of grooves 101, into
which the radiating fins 11 are inserted. According to the
currently available technical skills, there are generally two ways
for fixedly connecting the radiating fins 11 to the base 10. As
shown in FIG. 1A, the first way is to directly weld the radiating
fins 11 to the base 10, and in this way the welding will result in
increased manufacturing cost. The second way is shown in FIG. 1B,
in which the connecting sections 111 of the radiating fins 11 are
first loosely fitted in the grooves 101 formed on the base 10, and
then a tool 12 is used to punch against areas on the base between
any two adjacent grooves 101, such that open tops of the grooves
101 are deformed to clamp on the connecting sections 111 of the
radiating fins 11 in a tight-fit manner, as shown in FIG. 1C.
However, while the deformed open tops of the grooves 101 clamp on
the connecting sections 111 of the radiating fins 11 in a tight-fit
manner, all other portions of the connecting sections 111 below the
deformed open tops of the grooves 101 are still inserted in the
grooves 101 in the loose-fit manner. Therefore, the connection of
the radiating fins 11 to the base 10 in the second way tends to
cause thermal resistance and easy separation of the radiating fins
11 from the grooves 101.
[0004] Accordingly, the conventional heat-dissipation units have
the following disadvantages: (1) requiring increased manufacturing
cost; (2) tending to have a deformed base; and (3) having a
relatively unstable structure.
[0005] It is therefore tried by the inventor to develop an improved
heat-dissipation unit and a method of manufacturing same, so as to
overcome the problems in the prior art.
SUMMARY OF THE INVENTION
[0006] A primary object of the present invention is to provide a
heat-dissipation unit that has radiating fins firmly locked to a
base and can be manufactured at reduced cost.
[0007] Another object of the present invention is to provide a
heat-dissipation unit that avoids the problem of a deformed base
thereof.
[0008] A further object of the present invention is to provide a
heat-dissipation unit manufacturing method, which enables a
plurality of radiating fins to firmly lock to a base to form a
heat-dissipation unit at reduced manufacturing cost.
[0009] To achieve the above and other objects, the heat-dissipation
unit provided according to the present invention includes a base
and a plurality of radiating fins. The base has a plurality of
grooves formed thereon, and each of the grooves has an open top and
a closed bottom. The radiating fins respectively have a
heat-radiating zone and a bent zone being pressed to form an
assembling section. The bent zones are perpendicular to the
heat-radiating zones and are positioned on the open tops of the
grooves with the assembling sections correspondingly fitted in the
grooves.
[0010] To achieve the above and other objects, the heat-dissipation
unit manufacturing method according to the present invention
includes the following steps:
providing a base having a plurality of grooves formed on a top
thereof, and each of the grooves having an open top and a closed
bottom; providing a plurality of radiating fins, each of which
having a heat-radiating zone and a bent zone perpendicular to the
heat-radiating zone; and flatly positioning the bent zones on the
open tops of the grooves; and applying a pressure onto the bent
zones, so that the bent zones respectively form an assembling
section in the grooves to tightly fit therein, bringing the
radiating fins to lock to the base.
[0011] With the heat-dissipation unit manufacturing method of the
present invention, the bent zones are pressed to respectively form
an assembling section for correspondingly tightly fitting in the
grooves, allowing the radiating fins to be stably and firmly lock
to the base. In addition, the cost of welding the radiating fins to
the base as required in the conventional heat-dissipation unit is
saved and the problem of a deformed base can be avoided.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] 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
[0013] FIG. 1A is a sectional view showing the forming of a first
conventional heat-dissipation unit;
[0014] FIGS. 1B and 1C are sectional views showing the forming of a
second conventional heat-dissipation unit;
[0015] FIG. 2A is an exploded perspective view of a
heat-dissipation unit according to a first embodiment of the
present invention;
[0016] FIG. 2B is an assembled view of FIG. 2A;
[0017] FIG. 3 is an assembled perspective view of a
heat-dissipation unit according to a second embodiment of the
present invention;
[0018] FIG. 4 is an assembled perspective view of a
heat-dissipation unit according to a third embodiment of the
present invention;
[0019] FIG. 5A is an illustrative view showing the steps included
in a first embodiment of a heat-dissipation unit manufacturing
method according to the present invention;
[0020] FIG. 5B is a flowchart showing the steps included in the
first embodiment of the heat-dissipation unit manufacturing method
according to the present invention; and
[0021] FIG. 6 is a flowchart showing the steps included in a second
embodiment of the heat-dissipation unit manufacturing method
according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0022] The present invention will now be described with some
preferred embodiments thereof and with reference to the
accompanying drawings. For the purpose of easy to understand,
elements that are the same in the preferred embodiments are denoted
by the same reference numerals.
[0023] Please refer to FIGS. 2A and 2B that are exploded and
assembled perspective views, respectively, of a heat-dissipation
unit 2 according to a first embodiment of the present invention. As
shown, the heat-dissipation unit 2 includes a base 20 and a
plurality of radiating fins 21. The base 20 is formed on a top with
a plurality of grooves 201, each of which has an open top 2011, a
closed bottom 2012, a first lateral side 2013, and a second lateral
side 2014. The first and second lateral sides 2013, 2014 are
separately raised from two opposite lateral edges of the closed
bottom 2012.
[0024] Each of the radiating fins 21 includes a heat-radiating zone
211 and a bent zone 212. The bent zone 212 is perpendicular to the
heat-radiating zone 211 and forms an assembling section 2122. To
assemble the radiating fins 21 to the base 20, the bent zones 212
are positioned corresponding to the open tops 2011 of the grooves
201 and the assembling sections 2122 are correspondingly tightly
fitted in the grooves 201.
[0025] As can be seen from FIG. 2B, with the structural design of
the heat-dissipation unit 2 according to the first embodiment of
the present invention, the assembling sections 2122 are tightly
fitted in the grooves 201 for the radiating fins 21 to stably and
firmly position in place on the base 20. Further, the cost of
welding the radiating fins to the base as required in the
conventional heat-dissipation unit can be omitted, and the problem
of a deformed and damaged base can be avoided.
[0026] FIG. 3 is an assembled perspective view of a
heat-dissipation unit 2 according to a second embodiment of the
present invention. Please refer to FIG. 3 along with FIG. 2A. As
shown, the heat-dissipation unit 2 in the second embodiment is
generally structurally similar to the first embodiment, except
that, in the second embodiment, each of the grooves 201 has at
least one inward and downward inclined zone 2015, which can be
formed on the first lateral side 2013 or the second lateral side
2014. In the illustrated second embodiment, the inclined zone 2015
is formed on the first lateral side 2013 without being limited
thereto. That is, the inclined zone 2015 can be otherwise formed on
the second lateral side 2014. The inclined zone 2015 formed on the
first lateral side 2014 is inclined toward the second lateral side
2014, and the assembling section 2122 is bent in a manner for
correspondingly and fitly bearing on the inclined zone 2015 in the
groove 201. With the assembling section 2122 fitly bearing on the
inclined zone 2015, the closed bottom 2012, and the first lateral
side 2013 or the second lateral side 2014, each of the radiating
fins 21 can be similarly firmly assembled to the base 20.
[0027] FIG. 4 is an assembled perspective view of a
heat-dissipation unit 2 according to a third embodiment of the
present invention. As shown, the heat-dissipation unit 2 in the
third embodiment is generally structurally similar to the previous
embodiments, except that, in the third embodiment, each of the
grooves 201 has at least one inward and downward inclined zone 2015
formed on a part of the first lateral side 2013 or the second
lateral side 2014. In the illustrated third embodiment, the
inclined zone 2015 is formed on a part of the first lateral side
2013 without being limited thereto. That is, the inclined zone 2015
may be otherwise formed on a part of the second lateral side 2014.
With the assembling section 2122 fitly bearing on the inclined zone
2015, the closed bottom 2012, and the first lateral side 2013 and
the second lateral side 2014, each of the radiating fins 21 can be
similarly firmly assembled to the base 20.
[0028] FIGS. 5A and 5B are an illustrative view and a flowchart,
respectively, showing the steps S1, S2 and S3 included in a first
embodiment of a heat-dissipation unit manufacturing method
according to the present invention.
[0029] In the step S1, a base having a plurality of grooves formed
thereon is provided; and each of the grooves has an open top and a
closed bottom.
[0030] More specifically, a base 20 having a plurality of grooves
201 formed thereon is provided, and each of the grooves 201 has an
open top 2011 and a closed bottom 2012.
[0031] In the step S2, a plurality of radiating fins are provided,
and each of which includes a heat-radiating zone and a bent zone
perpendicular to the heat-radiating zone; and the bent zones are
flatly positioned on the open tops of the grooves.
[0032] More specifically, a plurality of radiating fins 21 are
provided, and each of which includes a heat-radiating zone 211 and
a bent zone 212 perpendicular to the heat-radiating zone 211; and
the bent zones 212 are flatly positioned on the open tops 2011 of
the grooves 201.
[0033] In the step S3, a pressure is applied onto all the bent
zones, so that the bent zones respectively form an assembling
section in the grooves to tightly fit therein, so that the
radiating fins are locked to the base.
[0034] More specifically, a pressure is applied onto all the bent
zones 212, so that the bent zones 212 respectively form an
assembling section 2122 in the grooves 201 to tightly fit therein,
so that the radiating fins 21 are locked to the base 20.
[0035] The bent zones 212 are pressed to form the assembling
sections 2122 via mechanical process. In the illustrated
embodiment, the mechanical process is stamping without being
limited thereto.
[0036] FIG. 6 is a flowchart showing the steps S1 to S4 included in
a second embodiment of the heat-dissipation unit manufacturing
method according to the present invention.
[0037] In the step S1, a base having a plurality of grooves formed
thereon is provided; and each of the grooves has an open top and a
closed bottom.
[0038] In the step S2, a plurality of radiating fins are provided,
and each of which includes a heat-radiating zone and a bent zone
perpendicular to the heat-radiating zone; and the bent zones are
flatly positioned on the open tops of the grooves.
[0039] In the step S3, a pressure is applied onto all the bent
zones, so that the bent zones respectively form an assembling
section in the grooves to tightly fit therein.
[0040] While the second embodiment of the heat-dissipation unit
manufacturing method includes steps S1 to S3 the same as those in
the first embodiment, the second embodiment further includes a step
S4 after the step S3.
[0041] In the step S4, a pressure is further applied onto the
assembling sections for the same to fitly bear on inclined zones
separately formed in the grooves, so that the radiating fins are
locked to the base.
[0042] More specifically, a pressure is further applied onto the
assembling sections 2122 for the same to fitly bear on inclined
zones 2015 separately formed in the grooves 201, so that the
radiating fins 21 are firmly locked to the base 20.
[0043] With the heat-dissipation unit manufacturing method of the
present invention, the bent zones 212 are pressed by way of
stamping to respectively form an assembling section 2122 for
correspondingly tightly fitting in the grooves 201, allowing the
radiating fins 21 to be stably and firmly locked to the base 20. In
addition, the cost of welding the radiating fins to the base as
required in the conventional heat-dissipation units is saved and
the problem of a deformed or damaged base can be avoided.
[0044] In brief, the present invention is superior to the prior art
due to the following advantages: (1) providing more stable and
firmer structure; (2) requiring only reduced manufacturing cost;
and (3) avoiding the problem of a deformed base.
[0045] The present invention has been described with some preferred
embodiments thereof and it is understood that many changes and
modifications in the described 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.
* * * * *