CN104564732B - Thin fan - Google Patents
Thin fan Download PDFInfo
- Publication number
- CN104564732B CN104564732B CN201310502563.6A CN201310502563A CN104564732B CN 104564732 B CN104564732 B CN 104564732B CN 201310502563 A CN201310502563 A CN 201310502563A CN 104564732 B CN104564732 B CN 104564732B
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- CN
- China
- Prior art keywords
- thin fan
- magnetic part
- bearing
- impeller
- rotating shaft
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
- F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
- F04D25/062—Details of the bearings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of thin fan, including impeller and motor.Impeller has wheel hub and blade structure, and blade structure is set around wheel hub.Motor includes stator structure, magnet assembly, bearing arrangement and rotating shaft.Magnet assembly is located at the inner side of wheel hub and ring sets the stator structure, and magnet assembly includes magnet and magnetic conduction shell.Bearing arrangement includes bearing block and single ball bearing, and single ball bearing is arranged at bearing block and forms accommodation space.Rotating shaft is arranged in accommodation space.The thin fan of the present invention reduces the overall component of thin fan by the configuration of single ball bearing so that the overall height reduction of thin fan is to less than 5 millimeters, to reach the purpose of slimming.
Description
Technical field
The present invention is on fan structure, particularly with regard to a kind of thin fan.
Background technology
As various electronic installations are thinned the trend of development, in order to coordinate electronic installation, fan structure also will be towards thin
Typeization develops.
Fig. 1 is please refer to, is the diagrammatic cross-section of known fan structure, it is known that fan structure 1 comprises at least bearing holder (housing, cover)
10th, stator structure 11, the rotor structure 12 containing blade, bearing 13a, 13b, spring 14 and clasp 15.Known fan structure more than 1
It is used in both sides respectively two bearings 13a, 13b of collocation, and configure a clasp 15 with fixed rotor structure 12 of bearing holder (housing, cover) 10.And axle
At least two springs 14 can be configured more than the upper end of bearing sleeve 10, to provide required precompression.It is well known, however, that fan structure 1 is basic
In the case that component can not be reduced, it is difficult to which the height H of known fan structure 1 is reduced to less than 5 millimeters of target by realization.
Therefore, how to provide a kind of component it is less and may achieve slimming purpose thin fan, be that this area needs solution badly
One of certainly the problem of.
The content of the invention
In view of above-mentioned problem, the main object of the present invention is to be to provide a kind of thin air that may achieve slimming purpose
Fan.
For up to above-mentioned purpose, according to the thin fan of the present invention, including impeller and motor.
Impeller has wheel hub and blade structure, and blade structure is set around wheel hub, and wherein wheel hub includes shaft, and rotating shaft
Portion is tube-in-tube structure.
Motor then includes stator structure, magnet assembly, bearing arrangement and rotating shaft, motor driving wheel rotation, magnet assembly
Positioned at the inner side of wheel hub and ring setting minor structure.Magnet assembly includes magnet and magnetic conduction shell.Bearing arrangement include bearing block with
And single ball bearing, single ball bearing is arranged at bearing block and forms an accommodation space, and rotating shaft card sets foregoing accommodating sky
Between.
In a preferred embodiment of the present invention, the side that an at least magnetic part is arranged at bearing block is further included, to attract axle
Bearing structure.
In a preferred embodiment of the present invention, magnetic part attracts an inner ring of the single ball bearing of bearing arrangement.
In a preferred embodiment of the present invention, an at least magnetic part includes the first magnetic part, and correspondence bearing arrangement is set.Its
In, thin fan further includes bottom plate.Motor, impeller are sequentially arranged on bottom plate, and bottom plate correspondence bearing arrangement has an opening, the
One magnetic part is then arranged at opening.
In a preferred embodiment of the present invention, the first magnetic part can be circular ring structure or pied geometry.
In a preferred embodiment of the present invention, thin fan further includes bottom plate, and motor, impeller are sequentially arranged on bottom plate,
And bottom plate has an at least holding part, an at least magnetic part further includes the second magnetic part, and the second magnetic part is arranged at holding part.
In a preferred embodiment of the present invention, holding part correspondence magnet assembly is set.
In a preferred embodiment of the present invention, wherein the height ratio of impeller and thin fan is at least above 0.5.
In a preferred embodiment of the present invention, the whole height of thin fan is not more than 5 millimeters.Wherein, impeller, magnetic group
Part and the gross weight of rotating shaft are not more than 5 grams.
In a preferred embodiment of the present invention, magnetic part is able to attract the rotating shaft.
In a preferred embodiment of the present invention, spindle portion card sets accommodation space.Wherein, the magnetic part for this embodiment of arranging in pairs or groups
Twisted rotary shaft is set.
The thin fan of the present invention reduces the overall component of thin fan by the configuration of single ball bearing so that
The overall height reduction of thin fan is to less than 5 millimeters, to reach the purpose of slimming.
Brief description of the drawings
Fig. 1 is the diagrammatic cross-section of known fan structure.
Fig. 2 is the diagrammatic cross-section of the first embodiment of the thin fan of the present invention.
Fig. 3 is the diagrammatic cross-section of the second embodiment of the thin fan of the present invention.
Description of reference numerals
1：Known fan structure
10：Bearing holder (housing, cover)
11：Stator structure
12：Rotor structure
13a、13b：Bearing
14：Spring
15：Clasp
2、2a：Thin fan
20：Impeller
201：Wheel hub
202：Blade structure
21：Motor
211：Stator structure
212：Bearing arrangement
212a：Bearing block
212b：Single ball bearing
213：Magnet assembly
213a：Magnet
213b：Magnetic conduction shell
214、215：Rotating shaft
22：Magnetic part
221、221a：First magnetic part
222：Second magnetic part
23：Bottom plate
231：Holding part
H、H1、H2：Highly
Embodiment
Hereinafter with reference to correlative type, illustrate a kind of thin fan according to present pre-ferred embodiments, wherein identical member
Part will be illustrated with identical reference marks.
First, Fig. 2 is please refer to, Fig. 2 is the diagrammatic cross-section of the first embodiment of the thin fan of the present invention.
The thin fan 2 of the present invention, including impeller 20 and motor 21.And the thin fan 2 of the present embodiment more may include
An at least magnetic part 22.Wherein, an at least magnetic part 22 of the present embodiment at least includes the first magnetic part 221.
Impeller 20 has wheel hub 201 and blade structure 202.Blade structure 202 is set around wheel hub 201, wherein wheel hub 201
With a perforation, and perforation can be a hollow circular cylinder.Blade structure 202, the wheel hub 201 of this drawing illustration can be integrated into single
Component, but be not limited.
Motor 21 then includes stator structure 211, bearing arrangement 212 and magnet assembly 213 and rotating shaft 214, motor 21
Driving impeller 20 is rotated.Magnet assembly 213 is located at the inner side of wheel hub 201 and ring setting minor structure 211.
Magnet assembly 213 includes magnet 213a and magnetic conduction shell 213b, and magnet 213a adjoining stator structures 211.Bearing
Structure 212 includes bearing block 212a and single ball bearing 212b, and single ball bearing 212b is arranged at bearing block 212a simultaneously
Accommodation space is formed, and rotating shaft 214 is able to card and sets this accommodation space and set with the close-fitting of wheel hub 201.It is single in this embodiment
Ball bearing 212b is able to provide 201 1 support forces of wheel hub.
Accommodation space described herein is made up of bearing block 212a with single ball bearing 212b, and purpose is to make rotating shaft
Portion's rotating shaft 214 is able to be arranged in wherein.
If magnetic part 22 is arranged at bearing block 212a side, bearing arrangement 212 can be attracted, to further provide for precompressed
Power is to bearing arrangement 212.Precompression herein can also be reached by adjusting the magnetic force of magnetic part 22.It can be saved by such a configuration
Slightly the component of known fan structure 1, can such as omit spring 14 so that the integrated member of motor is reduced, slim further to realize
The purpose of change.
By taking Fig. 2 as an example, the first magnetic part 221 is arranged at bearing block 212a side, and the first magnetic part 221 is attracted axle
Bearing structure 212.Specifically, the first magnetic part 221 herein can attract the single ball bearing 212b's of bearing arrangement 212 interior
Ring.Single ball bearing 212b inner ring is needed made by least partially permeability magnetic material, and permeability magnetic material for example can be silicon steel, amorphous
Matter alloy（amorphous alloy）, it is ferromagnetic（ferromagnetic）Or ferrous salt（ferrite）Deng, but be not limited.
The thin fan 2 of the present invention further includes bottom plate 23, and motor 21, impeller 20 are sequentially arranged on bottom plate 23.Bottom plate
23 correspondence bearing arrangements 212 have an opening（Figure is not marked）, to set bearing block 212a and the first magnetic part 221.
Wherein, can be according to different demands, adjust the first magnetic part 221 is shaped as circular ring structure or pied geometry,
In addition, in other embodiment, the first magnetic part 221 can also be constituted using multiple magnetic parts, such as by two panels semicircle
Structure, but be not limited.
In addition, the bottom plate 23 of the present embodiment more may include an at least holding part 231, and the holding part 231 of the present embodiment can
Any place in the lower section of impeller 20 is arranged at, and ring-type is set centered on wheel hub 201.In addition, the position of holding part 231 is preferably leaned on
Nearly magnet assembly 213 is set（A for example, convex groove, and protuberance is towards magnet assembly）.
In the present embodiment, holding part 231 is also for made by permeability magnetic material, therefore can make the magnet 213a of magnet assembly 213
Attract holding part 231, impeller 20 can be attracted to provide precompression indirectly to bearing arrangement 212.
And, the rotating shaft 214 of the thin fan 2 of the present embodiment, it can wear the perforation of wheel hub 201（Or hollow circular cylinder）.
And when rotating shaft 214 is arranged in into perforation, wheel hub 201 being made to extend slightly in a radial direction, i.e., perforation will be strutted somewhat, therefore rotating shaft
214 abut against to increase the mechanical strength of thin fan 2 with wheel hub 201.
Made by rotating shaft 214 or permeability magnetic material, therefore the first magnetic part 221 is in addition to it can attract bearing arrangement 212,
Also rotating shaft 214 can be attracted.
Continuous to refer to Fig. 2, the height of impeller 20 of the present embodiment is H2 and the height H1 ratios of thin fan 2 are at least above 0.5.
And the whole height of thin fan 2 is not more than 5 millimeters and impeller 20, magnet assembly 213 and the gross weight of rotating shaft 214 are not more than 5
Gram.
Supplementary notes, gross weight is not more than 5 grams herein, will not be with impeller 20, magnet assembly 213 and rotating shaft 214
Limitation, the gross weight of rotatable mechanism is measurement the weight measured should be that bearing arrangement 212 is born and operate herein when
Foundation, therefore will have been adjusted according to different embodiments.
Next referring to Fig. 3, it is the diagrammatic cross-section of the second embodiment of the thin fan of the present invention.
The present embodiment is that an at least magnetic part 22 of the present embodiment further includes the second magnetic with previous embodiment difference
Property part 222, and the second magnetic part 222 are arranged at the holding part 231 of bottom plate 23.
Thin fan 2a as shown in Figure 3, its magnetic part 22 further includes the second magnetic part 222, and the second magnetic part 222
In holding part 231, therefore magnet assembly 213 can be attracted.By such a configuration, it can attract, adsorb impeller 20 and may replace
Know the clasp 15 of motor, and reach the effect similar to clasp.Also it can provide by the indirect offer of such a configuration and indirectly
Precompression is to bearing arrangement 212.
Second magnetic part 222 or multiple magnetic parts are constituted, and such as by two panels semi-circular structure, but are not limited.
The present embodiment and previous embodiment another difference is that, the thin fan 2a of the present embodiment rotating shaft 215 is
Part may be disposed in bottom plate 23 or other mechanisms, and at least partly be arranged in accommodation space.In other words, turn of the present embodiment
At least part of axle 215 protrudes from wheel hub 201.
The effect that at least part of rotating shaft 215 protrudes from wheel hub 201 is thin fan 2a can be avoided to be collided by external force, made
Shell produces deformation and then damages its internals.Specifically, when thin fan 2a is arranged at electronic installation, when electronics dress
Put when being squeezed or hitting, may be such that thin fan 2a upper shells are sunk or are recessed, in no rotating shaft 215 at least
The situation of wheel hub 201 is partially protrude through, upper shell will directly extrude thin fan 2a, but at least partly be protruded in rotating shaft 215
In the case of wheel hub 201, the deformation of the housing of top will be stopped or be slowed down by rotating shaft 215, and can further avoid thin
Type fan 2a damage.
And, for the rotating shaft 215 for arranging in pairs or groups above-mentioned, the first magnetic part 221a of the present embodiment is preferably circular ring structure or extremely
Few two magnet are constituted.And first magnetic part 221a preferably can twisted rotary shaft 215 set.
Element numbers person identical with first embodiment in second embodiment, its structure is also identical with function, is no longer gone to live in the household of one's in-laws on getting married in this
State.
In summary, thin fan of the invention is by the configuration of single ball bearing, and it is overall to reduce thin fan
Component so that the overall height reduction of thin fan is to less than 5 millimeters, to reach the purpose of slimming.
Illustrative is the foregoing is only, rather than is restricted person.Any spirit and scope without departing from the present invention, and to it
In the equivalent modifications of progress or change, the claim for being intended to be limited solely by the present invention.
Claims (14)
1. a kind of thin fan, including：
One impeller, with a wheel hub and a blade structure, the blade structure is set around the wheel hub；And
One motor, including a stator structure, a magnet assembly, a bearing arrangement and a rotating shaft, and the motor drives the impeller to turn
Dynamic, the magnet assembly is located at the inner side of the wheel hub and ring sets the stator structure, and wherein the magnet assembly includes a magnet and one
Magnetic conduction shell, the bearing arrangement includes a bearing block and a single ball bearing, and the single ball bearing is arranged at the bearing block
And an accommodation space is formed, and the rotating shaft card sets the accommodation space；
Further include a bottom plate, the bottom plate have an at least holding part, the holding part close to magnet assembly set, the holding part by
Permeability magnetic material is made.
2. thin fan as claimed in claim 1, further includes an at least magnetic part, be arranged at the side of the bearing block, to inhale
Draw the bearing arrangement.
3. thin fan as claimed in claim 2, the wherein magnetic part attract the single ball bearing of the bearing arrangement
One inner ring.
4. thin fan as claimed in claim 2, an at least magnetic part includes one first magnetic part, to should bearing arrangement
Set.
5. thin fan as claimed in claim 4, the motor, the impeller are sequentially arranged on the bottom plate, and bottom plate correspondence
The bearing arrangement has an opening, and first magnetic part is then arranged at the opening.
6. thin fan as claimed in claim 4, wherein first magnetic part are circular ring structure or pied geometry.
7. the thin fan as described in claim 2 or 4, the motor, the impeller are sequentially arranged on the bottom plate, an at least magnetic
Property part further includes one second magnetic part, and second magnetic part is arranged at the holding part.
8. thin fan as claimed in claim 7, the wherein holding part to should magnet assembly set.
9. the height ratio of thin fan as claimed in claim 1, the wherein impeller and the thin fan is at least above 0.5.
10. the whole height of thin fan as claimed in claim 1, the wherein thin fan is not more than 5 millimeters.
11. thin fan as claimed in claim 1, the gross weight of the wherein impeller, the magnet assembly and the rotating shaft is not more than 5
Gram.
12. thin fan as claimed in claim 2, the wherein magnetic part are able to attract the rotating shaft.
13. thin fan as claimed in claim 2, wherein the spindle portion card set the accommodation space.
14. thin fan as claimed in claim 13, the magnetic part is set around the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310502563.6A CN104564732B (en) | 2013-10-23 | 2013-10-23 | Thin fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310502563.6A CN104564732B (en) | 2013-10-23 | 2013-10-23 | Thin fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104564732A CN104564732A (en) | 2015-04-29 |
| CN104564732B true CN104564732B (en) | 2017-10-03 |
Family
ID=53081584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310502563.6A Active CN104564732B (en) | 2013-10-23 | 2013-10-23 | Thin fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104564732B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425865A (en) * | 2017-02-14 | 2018-08-21 | 台达电子工业股份有限公司 | Thin fan and thin motor |
| US10954946B2 (en) | 2017-02-14 | 2021-03-23 | Delta Electronics, Inc. | Thin fan |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW383818U (en) * | 1999-02-09 | 2000-03-01 | Adda Corp | Structure for radiator fan set with magnetic positioning |
| JP2004040926A (en) * | 2002-07-04 | 2004-02-05 | Minebea Co Ltd | Fan motor |
| CN100461589C (en) * | 2005-07-19 | 2009-02-11 | 台达电子工业股份有限公司 | Mangnetic force positioning motor and its fan |
| CN101060766A (en) * | 2006-04-17 | 2007-10-24 | 建准电机工业股份有限公司 | Thin heat radiation machine |
| CN100574052C (en) * | 2006-08-16 | 2009-12-23 | 台达电子工业股份有限公司 | Fan, motor and magnetic conduction shell thereof |
| CN101363458B (en) * | 2007-08-10 | 2010-10-06 | 富准精密工业(深圳)有限公司 | Radiator fan |
| CN201466808U (en) * | 2009-08-21 | 2010-05-12 | 苏州聚力电机有限公司 | Motor with negative pressure adsorption type bearing |
-
2013
- 2013-10-23 CN CN201310502563.6A patent/CN104564732B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104564732A (en) | 2015-04-29 |
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| PB01 | Publication | ||
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| GR01 | Patent grant |