U.S. patent application number 14/867526 was filed with the patent office on 2017-02-23 for fan assembly.
The applicant listed for this patent is HON HAI PRECISION INDUSTRY CO., LTD.. Invention is credited to MING-CHIH SUN.
Application Number | 20170051758 14/867526 |
Document ID | / |
Family ID | 58158101 |
Filed Date | 2017-02-23 |
United States Patent
Application |
20170051758 |
Kind Code |
A1 |
SUN; MING-CHIH |
February 23, 2017 |
FAN ASSEMBLY
Abstract
A fan assembly includes a fan hub. The fan hub has a body. The
body includes a top surface and a bottom surface opposite to the
top surface. The top surface defines a first recess towards the
bottom surface.
Inventors: |
SUN; MING-CHIH; (New Taipei,
TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
HON HAI PRECISION INDUSTRY CO., LTD. |
New Taipei |
|
TW |
|
|
Family ID: |
58158101 |
Appl. No.: |
14/867526 |
Filed: |
September 28, 2015 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F04D 29/646 20130101;
F04D 25/062 20130101 |
International
Class: |
F04D 29/58 20060101
F04D029/58; F04D 29/28 20060101 F04D029/28; F04D 29/058 20060101
F04D029/058; F04D 29/42 20060101 F04D029/42; F04D 29/053 20060101
F04D029/053; F04D 17/08 20060101 F04D017/08; F04D 25/06 20060101
F04D025/06 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 21, 2015 |
CN |
201510517124.1 |
Claims
1. A fan assembly comprising: a fan hub having a body comprising a
top surface and a bottom surface opposite to the top surface,
wherein the top surface defines a first recess towards the bottom
surface.
2. The fan assembly of claim 1, wherein the bottom surface defines
a second recess towards the top surface, the first recess and the
second recess are spaced apart from each other.
3. The fan assembly of claim 2, further comprising a plurality of
fans, wherein the fans extend outside from the body radically.
4. The fan assembly of claim 3, further comprising a shaft, wherein
the second recess comprises a bottom surface, the bottom surface is
parallel to the bottom surface of the body, the shaft protrudes
from the bottom surface of the second recess towards the bottom
surface of the body.
5. The fan assembly of claim 4, wherein the shaft and the body are
coaxial.
6. The fan assembly of claim 4, further comprising a fan box, a
bearing group, and a stator group, wherein the fan box comprises a
frame and a bearing block, the frame comprises an upper surface and
a lower surface opposite to the upper surface, the upper surface
defines a receiving space towards the lower surface, the bearing
block is located at a center of the receiving space and is adjacent
to the lower surface, the fan box further comprises a shaft tube
protruding from a center of the bearing block towards the upper
surface, the shaft tube runs through the stator group, the stator
group is fixed on the bearing block, the shaft tube defines a
through hole to receive the bearing group, the fan hub is received
in the receiving space and is fixed on the bearing block, the shaft
runs into the bearing group.
7. The fan assembly of claim 6, wherein the bearing group comprises
a magnetic absorption structure, the magnetic absorption structure
comprises a magnet and a magnetic yoke, the magnet is received in
the magnetic yoke, a surface of the magnet adjacent to the upper
surface is exposed from the magnetic yoke and is aligned with the
shaft.
8. The fan assembly of claim 6, wherein the fan box further
comprises a connecting part, the connecting part is received in the
receiving space and is adjacent to the lower surface, the
connecting part is connected between the frame and the bearing
block, the connecting part comprises a plurality of connecting
arms, at least one connecting arms defines a slot to receive
electric wires.
9. The fan assembly of claim 8, wherein the connecting arms are
equally spaced from each other.
10. The fan assembly of claim 1, further comprising a top cover,
fixed on the top surface and sealing the first recess to define an
air insulation layer.
11. The fan assembly of claim 10, wherein the top cover has a disc
shape.
12. The fan assembly of claim 10, wherein the top cover has a
bullet shape.
Description
FIELD
[0001] The subject matter herein generally relates to a fan
assembly.
BACKGROUND
[0002] In an electronic device, there is a plurality of electronic
components. During operation the electronic components will
generate a lot of heat. In order to dissipate the heat, a cooling
unit, including a fan assembly and cooling fins, is arranged in the
electronic device.
BRIEF DESCRIPTION OF THE DRAWINGS
[0003] Implementations of the present technology will now be
described, by way of example only, with reference to the attached
figures.
[0004] FIG. 1 is an isometric view of an example embodiment of a
fan assembly.
[0005] FIG. 2 is an exploded, isometric view of the fan assembly of
FIG. 1.
[0006] FIG. 3 is similar to FIG. 2, but viewed from another
angle.
[0007] FIG. 4 is an enlarged, isometric view of an area IV of FIG.
3.
[0008] FIG. 5 is a cross sectional view taken along V-V line of
FIG. 1.
DETAILED DESCRIPTION
[0009] It will be appreciated that for simplicity and clarity of
illustration, where appropriate, reference numerals have been
repeated among the different figures to indicate corresponding or
analogous elements. In addition, numerous specific details are set
forth in order to provide a thorough understanding of the
embodiments described herein. However, it will be understood by
those of ordinary skill in the art that the embodiments described
herein can be practiced without these specific details. In other
instances, methods, procedures, and components have not been
described in detail so as not to obscure the related relevant
feature being described. Also, the description is not to be
considered as limiting the scope of the embodiments described
herein. The drawings are not necessarily to scale and the
proportions of certain sections have been exaggerated to better
illustrate details and features of the present disclosure.
[0010] Several definitions that apply throughout this disclosure
will now be presented.
[0011] The term "substantially" is defined to be essentially
conforming to the dimension, shape, or other feature that the term
modifies, such that the component need not be exact. For example,
"substantially cylindrical" means that the object resembles a
cylinder, but can have one or more deviations from a true cylinder.
The term "comprising," when utilized, means "including, but not
necessarily limited to"; it specifically indicates open-ended
inclusion or membership in the so-described combination, group,
series and the like.
[0012] The present disclosure is described in relation to a fan
assembly comprising: a fan hub having a body, wherein the body
comprises a top surface and a bottom surface opposite to the top
surface, the top surface defines a first recess towards the bottom
surface.
[0013] FIG. 1 and FIG. 2 illustrate a fan assembly 100 including a
fan box 10, a bearing group 20, a stator group 30, and a fan hub
40.
[0014] FIG. 2 illustrates that the fan box 10 includes a frame 11,
a bearing block 12, and a connecting section 13.
[0015] The frame 11 includes an upper surface 111 and a lower
surface 112. The upper surface 111 and the lower surface 112 are
opposite to each other. The upper surface 111 defines a receiving
space 113 towards the lower surface 112. The receiving space 113 is
configured to receive the bearing block 12, the connecting section
13, the bearing group 20, the stator group 30, and the fan hub
40.
[0016] The bearing block 12 is located in the receiving space 113
and is adjacent to the lower surface 112. In at least one
embodiment, the bearing block 12 is located in the center of the
receiving space 113. A shaft tube 121 is assembled on the bearing
block 12. The shaft tube 121 protrudes from a center of the bearing
block 12 towards the upper surface 111. The shaft tube 121 defines
a through hole 1211 along the axis. The shaft tube 121 includes an
end section 1212. The end section 1212 is adjacent to the upper
surface 111. In at least one embodiment, the end section 1212 is
substantially ring shaped. An inside diameter of the end section
1212 is smaller than a diameter of the through hole 1211. FIGS. 3
and 4 illustrate that the lower surface 112 defines a depression
122 into the bearing block 12. The depression 122 is in
communication with the through hole 1211. A diameter of the
depression 122 is greater than a diameter of the through hole 1211.
In at least one embodiment, the depression 122 and the through hole
1211 are substantially coaxial. The depression 122 includes a
bottom surface 1221. The bottom surface 1221 and the lower surface
112 are parallel to each other. The bearing block 12 further
includes a plurality of hooks 1222 protruding from the bottom
surface 1221 towards the lower surface 112. The hooks 1222 surround
the through hole 1211 and are equally spaced.
[0017] FIG. 2 illustrates that the connecting part 13 is located in
the receiving space 113 and is adjacent to the lower surface 112.
The connecting part 13 is connected between the bearing block 12
and the frame 11. The connecting part 13 includes a plurality of
connecting arms 131. In at least one embodiment, the connecting
part 13 includes four connecting arms 1311. The connecting arms 131
are equally spaced. At least one of the connecting arms 131 defines
a slot 1311 to receive wires.
[0018] FIGS. 2 and 3 illustrates that the bearing group 20 includes
a buckle ring 21, an oil storage 22, a bearing 23, a wear resistant
plate 24, a magnetic absorption structure 25, a sealing ring 26,
and a bottom cover 27. The buckle ring 21, the oil storage 22, the
bearing 23, the wear resistant plate 24, and the magnetic
adsorption structure 25 are mounted into the through hole 1211 in
that order and contact with each other. The buckle ring 21 contacts
with the end section 1212. In at least one embodiment, a plurality
of pores is defined inside the bearing 23. A shaft hole 231 is
defined along an axis of the bearing 23, and a groove 232 is
defined at the top of the bearing 23. The groove 232 is
substantially ring shaped. The groove 232 and the shaft hole 231
are in communication with each other. A diameter of the groove 232
is greater than a diameter of the shaft hole 231. The oil storage
22 is received in the groove 232. A through hole 221 is defined in
the oil storage 22 corresponding to the shaft hole 231. The oil
storage 22 can be made of porous material, such as polyurethane
foam (commonly known as the sponge) or foam metal. The magnetic
absorption structure 25 includes a magnet 251 and a magnetic yoke
252. The magnet 251 is received in the magnetic yoke 252. A surface
of the magnet 251 adjacent to the bearing 23 is exposed from the
magnetic yoke 252. The bottom cover 27 includes a bottom wall 271
and a side wall 272. The side wall 272 protrudes vertically from a
center of the bottom wall 271. The bottom wall 271 is substantially
a circular shape. The side wall 272 is substantially ring shaped.
An outside diameter of the bottom wall 271 is substantially equal
to a diameter of the depression 122. An outside diameter of the
side wall 272 is substantially equal to a diameter of the through
hole 1211. The bottom wall 271 defines a plurality of clip holes
2711 surrounding the side wall 272. The clip holes 2711 run through
the bottom wall 271. Each clip hole 2711 respectively corresponds
to a hook 1222. The clip holes 2711 and the hooks 1222 fit with
each other to fix the bottom cover 27 in the depression 122. The
sealing ring 26 is arranged on the outside of the side wall
272.
[0019] The stator group 30 is positioned on the bearing block 12.
The stator group 30 defines a through hole 301, configured to allow
the shaft tube 121 to pass through. A diameter of the through hole
301 is substantially equal to an outside diameter of the shaft tube
121. The stator group 30 includes a base 31, a plurality of silicon
steel sheets 32, and a plurality of coils 33. The base 31 contacts
with the bearing block 12. A plurality of control circuits are
arranged on the base 31. The silicon steel sheets 32 protrude from
the base 31, and are substantially equally spaced from each other.
The coils 33 wind around the silicon steel sheets 32.
[0020] The fan hub 40 includes a body 41, a top cover 42, a shaft
43, and a number of fans 44. The body 41 is substantially cylinder,
and includes a top surface 411 and a bottom surface 412. The top
surface 411 defines a first recess 413 towards the bottom surface
412. The bottom surface 412 defines a second recess 414 towards the
top surface 411. The first and second recesses 413, 414 are spaced
apart from each other. In at least one embodiment, a depth of the
first recess 413 is smaller than a depth of the second recess 414.
The first and second recesses 413, 414 are substantially coaxial.
An inside diameter of the second recess 414 is substantially equal
to an outside diameter of the bearing block 12. The second recess
414 includes a bottom surface 4141. The bottom surface 4141 is
substantially parallel to the bottom surface 412. The top cover 42
covers and seals the first recess 413 to define an air insulation
layer 415. The air insulating layer 415 is configured to avoid a
noise caused by a poor flow field around the first recess 413. The
top cover 42 can be made of heat conductive materials, such as
copper or aluminum. The top cover 42 can be bonded to the top
surface 411. In at least one embodiment, the top cover 42 is
substantially a disc shape. A diameter of the top cover 42 is
substantially equal to an outside diameter of the body 41. The
shaft 43 is located in the second recess 414 and protrudes from the
bottom surface 4141 towards the bottom surface 412. In at least one
embodiment, the shaft 43 protrudes along an axis of the body 41. A
diameter of the shaft 43 is substantially equal to a diameter of
the shaft hole 231 and an inside diameter of the end section 1212.
The fans 44 extend outside from the body 41 radically. In at least
one embodiment, the fans 44 are substantially equally spaced from
each other.
[0021] FIG. 5 illustrates that during assembly, the buckle ring 21,
the oil storage 22, the bearing 23, the wear resistant plate 24,
and the magnetic adsorption structure 25 are mounted into the
through hole 1211 in that order from the depression 122. The
sealing ring 26 is arranged on the outside of the side wall 272 of
the bottom cover 27. The bottom cover 27 covers the depression 122
and is fixed in the depression 122 via the cooperation between the
clip holes 2711 and the hooks 1222. The sealing ring 26 is clamped
between the side wall 272 and a wall of the through hole 1211. The
side wall 272, the magnetic adsorption structure 25, the wear
resistant plate 24, the bearing 23, the oil storage 22, the buckle
ring 21, and the end section 1212 contact with each other in that
order, to fix the bearing group 20 in the through hole 1211. The
stator group 30 is mounted on the bearing block 12 from the upper
surface 111. The shaft tube 121 runs through the through hole 301.
The base 31 contacts with the bearing block 12. In at least one
embodiment, the base 31 and the bearing block 12 can be bonded
together. The fan hub 40 is mounted into the receiving space 133
from the upper surface 111. The shaft 43 runs into the bearing
group 20, and runs through the end section 1212, the buckle ring
21, the oil storage 22, the bearing 23, and the wear resistant
plate 24. An end of the shaft 43 is aligned with the magnet
251.
[0022] In other embodiments, the top cover 42 can be a bullet
shaped cover.
[0023] In the present embodiment, the first recess 413 which is
defined from the top surface 411 towards the bottom surface 412,
can increase a heat dissipation area of the fan assembly 100 so as
to provide a quick dissipation of the heat generated on the fan
assembly 100. The air insulating layer 415 in the first recess 413
can separate the heat outside and the elements in the fan assemble
100 so as to avoid a high temperature of the fan assembly 100, and
extend a life of the fan assembly 100.
[0024] The embodiments shown and described above are only examples.
Many details are often found in the art such as the other features
of a fan assembly. Therefore, many such details are neither shown
nor described. Even though numerous characteristics and advantages
of the present technology have been set forth in the foregoing
description, together with details of the structure and function of
the present disclosure, the disclosure is illustrative only, and
changes may be made in the detail, especially in matters of shape,
size, and arrangement of the sections within the principles of the
present disclosure, up to and including the full extent established
by the broad general meaning of the terms used in the claims. It
will therefore be appreciated that the embodiments described above
may be modified within the scope of the claims.
* * * * *