U.S. patent application number 10/921925 was filed with the patent office on 2006-02-23 for hub structure for a heat-dissipation fan.
This patent application is currently assigned to Datech Technology Co., Ltd.. Invention is credited to Nien-Lun Li, Fu-Yin Wang.
Application Number | 20060039789 10/921925 |
Document ID | / |
Family ID | 35909797 |
Filed Date | 2006-02-23 |
United States Patent
Application |
20060039789 |
Kind Code |
A1 |
Li; Nien-Lun ; et
al. |
February 23, 2006 |
Hub structure for a heat-dissipation fan
Abstract
The present invention is a hub structure for a heat-dissipation
fan, comprising a hub; and a plurality of locking parts. Therein,
the hub includes a containing space. The locking parts are at the
bottom of the containing space. Each locking part comprises a
curved surface, a hook extended to the side wall of the containing
space, and a leaning part at the end. Accordingly, by the locking
parts, a metal sheath for a fan can be locked to a hub and is
firmly fixed in the containing space to prevent from looseness or
departure.
Inventors: |
Li; Nien-Lun; (Hsin-Chuang
City, TW) ; Wang; Fu-Yin; (Hsin-Chuang City,
TW) |
Correspondence
Address: |
TROXELL LAW OFFICE PLLC
SUITE 1404
5205 LEESBURG PIKE
FALLS CHURCH
VA
22041
US
|
Assignee: |
Datech Technology Co., Ltd.
|
Family ID: |
35909797 |
Appl. No.: |
10/921925 |
Filed: |
August 20, 2004 |
Current U.S.
Class: |
416/220R |
Current CPC
Class: |
F05B 2250/71 20130101;
F04D 29/329 20130101 |
Class at
Publication: |
416/220.00R |
International
Class: |
F01D 5/30 20060101
F01D005/30 |
Claims
1. A hub structure for a heat-dissipation fan, comprising: a hub
with a containing space; a plurality of blades deposited on an
outside surface of said hub; and a plurality of locking parts
deposited on an inner surface of said hub, each of which includes a
hook extended out from an end of said locking part.
2. The hub structure according to claim 1, wherein said plurality
of locking parts is deposited on a bottom surface of said
containing space.
3. The hub structure according to claim 1, wherein said plurality
of locking parts is deposited near a side wall of said containing
space.
4. The hub structure according to claim 1, wherein said hook of
each said locking part is extended toward a side wall of said
containing space.
5. The hub structure according to claim 1, wherein said locking
part includes a curved surface.
6. The hub structure according to claim 1, wherein said end of each
said locking part includes a leaning part.
7. The hub structure according to claim 1, wherein a plurality of
ribs is deposited at a bottom of said containing space.
8. The hub structure according to claim 1, wherein each said
locking part is deposited away from a side wall of said containing
space.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to a hub structure; more
particularly, relates to a metal sheath required by a fan being
firmly locked in a containing space of a fan hub to prevent from
looseness or departure.
DESCRIPTION OF THE RELATED ART
[0002] A hub structure according to the prior art (as shown in FIG.
5) comprises a hub 4 having a spindle 41 at the center, a plurality
of blades 42 on the outside surface of the hub 4, and a metal
sheath with a magnetic object around on the inner surface of the
hub. In this way, the above structure can be connected with a fan
to guide the air flow.
[0003] According to the structure of the prior art, the metal
sheath 43 is fixed on the inner surface of the hub 4 by
glue-dispensing or expanding-and-shrinking. Though the metal sheath
43 can be fixed in the hub 4 in this way, after a period of time of
use, the glue may often be spoiled or the blades may be over-heated
for having been run for a long time so that a gap may appear
between the metal sheath 43 and the hub 4 to loosen or depart the
metal sheath 43 and the hub 4, or, even to make the fan
malfunctioned. So, the hub structure according to the prior art can
not fulfill the needs of the user on actual use.
SUMMARY OF THE INVENTION
[0004] Therefore, the main purpose of the present invention is to
provide a plurality of locking parts to lock the metal sheath
required by a fan to make the metal sheath be firmly fixed in a
containing space of the hub while being prevented from looseness or
departure.
[0005] To achieve the above purpose, the present invention is a hub
structure for a heat-dissipation fan, comprising a hub, a plurality
of blades deposited on the outside surface of the hub, and a
plurality of locking parts deposited on the inner surface of the
hub. Therein, the hub includes a containing space; and the locking
parts are deposited on the inner surface of the hub. Each locking
part comprises an arc surface; a hook extended from the top of the
locking part; and a leaning surface at the end of the hook.
Accordingly, a metal sheath required by a fan can be locked by the
locking parts so that the metal sheath can be firmly fixed in the
containing space of the hub while being prevented from looseness or
departure.
BRIEF DESCRIPTIONS OF THE DRAWINGS
[0006] The present invention will be better understood from the
following detailed description of preferred embodiments of the
invention, taken in conjunction with the accompanying drawings, in
which
[0007] FIG. 1 is a perspective view of an embodiment according to
the present invention;
[0008] FIG. 1A is an enlargement view of a locking part according
to an embodiment of the present invention;
[0009] FIG. 2 is a cross-sectional view of an embodiment according
to the present invention;
[0010] FIG. 2A is a cross-sectional enlargement view of a locking
part according to an embodiment of the present invention;
[0011] FIG. 3 is a cross-sectional view showing the status of use
according to an embodiment of the present invention;
[0012] FIG. 4 is a cross-sectional view showing the status of use
after assembling with a metal sheath according to an embodiment of
the present invention;
[0013] FIG. 4A is a cross-sectional enlargement view of a locking
part after assembling with a metal sheath according to an
embodiment of the present invention; and
[0014] FIG. 5 is a cross-sectional view showing the status of use
according to an embodiment of the prior art.
DESCRIPTION OF THE PREFERRED EMBODIMENT
[0015] The following descriptions of the preferred embodiment are
provided to understand the features and the structures of the
present invention.
[0016] Please refer to FIG. 1 through FIG. 2A, which are a
perspective view of an embodiment according to the present
invention; an enlargement view of a locking part according to an
embodiment of the present invention; a cross-sectional view of an
embodiment according to the present invention; and a
cross-sectional enlargement view of a locking part according to an
embodiment of the present invention. As shown in the figures, the
present invention is a hub structure for a heat-dissipation fan,
which comprises a hub 1, a plurality of blades 2 and a plurality of
locking parts 14 to firmly lock a metal sheath 3, required by a
fan, in a hub 1.
[0017] The hub comprises a containing space 11; and a plurality of
ribs (not shown in the figures) deposited on the bottom of the
containing space 11 to strengthen the hub structure.
[0018] The blades 2 are deposited on the outside surface of the hub
1 whose number can be even or odd; and they are arranged with a
same distance in between whose shape can be an airfoil or whose
surface can be a curved surface, a leaning surface or a cambered
surface.
[0019] The locking parts 14 are deposited on the bottom of the
containing space 11 near the side wall of the containing space 11
in a proper distance. Each locking part 14 comprises a cambered
surface; a hook 15 extended from the top toward the side wall of
the containing space 11; and a leaning part 16 at the end of the
hook 15. By the above structure, a hub structure for a
heat-dissipation fan is obtained, where a metal sheath 3 can be
firmly locked in the containing space 11 of the hub 1 by the
locking parts 14 to prevent from looseness or departure.
[0020] Please refer to FIG. 3, FIG. 4 and FIG. 4A, which are a
cross-sectional view showing the status of use; a cross-sectional
view showing the status of use after assembling with a metal
sheath; and a cross-sectional enlargement view of a locking part
after assembling with a metal sheath, according to an embodiment of
the present invention. As shown in the figures, when the present
invention is to be locked with a metal sheath 3 required by a fan
(which metal sheath 3 can include a magnetic object on the inner
surface), the metal sheath 3 is corresponding to the containing
space 11 of the hub 1 and then is pushed in to butt the top surface
of the metal sheath 3 against the leaning parts 16 at the end of
the hooks 15 on the top of the locking parts 14. Then the lock
parts 14 are pushed inwardly by the top surface of the metal sheath
3 along the leaning part 16. In the end, the metal sheath 3 is
pushed down to the very bottom of the containing space 11 so that
the hooks 15 are locked at the inner edge of the metal sheath 3 by
the restoring force from the hooks 15. In this way, the assembling
of the metal sheath 3 is finished; and the locking parts 14 with
leaning surfaces 16 are correspondingly deposited at the inner edge
of the metal sheath 3 to lock the metal sheath 3. By doing so, a
metal sheath 3 required by a fan is firmly locked in a containing
space 11 of a fan hub 1 to prevent from looseness or departure
owing to long time of use or being over-heated.
[0021] The preferred embodiment herein disclosed is not intended to
unnecessarily limit the scope of the invention. Therefore, simple
modifications or variations belonging to the equivalent of the
scope of the claims and the instructions disclosed herein for a
patent are all within the scope of the present invention.
* * * * *