CN1987113A - Super thin fan - Google Patents
Super thin fan Download PDFInfo
- Publication number
- CN1987113A CN1987113A CN 200510134645 CN200510134645A CN1987113A CN 1987113 A CN1987113 A CN 1987113A CN 200510134645 CN200510134645 CN 200510134645 CN 200510134645 A CN200510134645 A CN 200510134645A CN 1987113 A CN1987113 A CN 1987113A
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- super thin
- thin fan
- fan according
- impeller
- pedestal
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Abstract
An ultra-thin fan is composed of a base with an axle hole and at least one coil, a blade wheel consisting of an annular plate and multiple curved blades, an assembly elements with an assembling hole and a radial flange, a magnet sheet with at least one pair of N and S poles on its surface, and an axle.
Description
Technical field
The present invention relates to fan, particularly about directly constituting an impeller, can dwindle the whole axial thickness of fan, assemble simple and reliable, as to increase the impeller startup degree of balance and stability of rotation super thin fan by ring flat-plate and a plurality of bending flabellum.
Background technique
Commonly use fan, as U. S. Patent the 5th, 217, No. 351 " small-sized fans (Small Fan) " patent of invention comprise a housing and an impeller.Have a pedestal in this housing, this pedestal is provided with a central siphon and two coil, is installed with a bearing in this central siphon, and this two coil is flat.This impeller has a rotor shell, a plurality of flabellum, an axostylus axostyle and a ring magnet.This rotor shell is down bowl-type, the equidistant radial a plurality of flabellums that are arranged with of its outer circumferential face.This axostylus axostyle one end is cemented in this rotor shell central interior, and the other end is plugged in the bearing of this central siphon in rotating mode.This ring magnet is flat, is fixedly arranged on the inside of this rotor shell, and is located on around this axostylus axostyle.When this two coil energising produced alternating magnetic field, this ring magnet was responded to this alternating magnetic field, rotates and drive this impeller.
Generally speaking, there is following shortcoming in the above-mentioned small-sized fans of commonly using: the rotor shell and the flabellum of this impeller are made with injection molding method usually, yield and adaptation ejection formation board in order to ensure ejection formation, the size of this rotor shell is occupied certain volume, is difficult to further reduce relatively axial thickness again.Moreover the rotor shell central interior of this impeller must one be convexly equipped with one for the axle bed in conjunction with this axostylus axostyle, but the setting of this axle bed also increases the axial thickness of this rotor shell relatively.As a result, this line shaft of rotor portion of commonly using small-sized fans usually greater than 5mm, must limit further the feasibility to more compactization development to thickness relatively.For these reasons, be necessary really the above-mentioned super thin fan of commonly using is further improved.
In view of this, the present invention is directed to above-mentioned shortcoming, its impeller only is provided with a ring flat-plate and a plurality of bending flabellum, makes it have as thin as a wafer axial thickness; Simultaneously, an assembly element and a slice shape magnet directly are clamped on the ring flat-plate of this impeller.Therefore, the present invention can dwindle the whole axial thickness of fan really relatively, is beneficial to fan design to compactization development.
Summary of the invention
Main purpose of the present invention provides and a kind ofly constitutes an impeller by ring flat-plate and a plurality of bending flabellum, has the super thin fan that dwindles the fan axial thickness.
Secondary objective of the present invention provides a kind of ring flat-plate that utilizes assembly element and sheet shape magnet clamping impeller, has the super thin fan of simplifying the rotor component assembling.
Another object of the present invention provides the axial alternating magnetic field that at least one coil produced that a kind of impeller utilizes sheet shape magnet induction pedestal, and this pedestal is made by magnetic conductive material, has the startup degree of balance of increase impeller and the super thin fan of stability of rotation.
A further object of the present invention provides the axial alternating magnetic field that at least one coil produced that a kind of impeller utilizes sheet shape magnet induction pedestal, and this pedestal correspondence is provided with at least one magnetic conduction balancing patch, has the super thin fan that increases stability of rotation.
Technological scheme of the present invention: a kind of super thin fan, it comprises: a pedestal, it is provided with an axis hole and at least one coil; One axostylus axostyle, it has one first end and one second end; One impeller, it has a ring flat-plate and a plurality of bending flabellum; One assembled components, it has an assembly hole and a radial flange; And a slice shape magnet, it forms two-phase different pole at least on a surface, this at least the two-phase different pole corresponding to this coil; Wherein first end of this axostylus axostyle is inserted in the axis hole of this pedestal, and second end pass the ring flat-plate of this impeller and be incorporated into the assembly hole of this assembled components, and the radial flange that utilizes this assembled components combines the ring flat-plate of this impeller with the clamping of sheet shape magnet, with common composition one super thin fan.
The invention has the advantages that:
1, all be the flat sheet shape owing to form coil, impeller and the sheet shape magnet of rotor component, impeller is bent into the bending flabellum by the plate punching press, and axostylus axostyle is simple and reliable with combining of pedestal and impeller, therefore, can further reduce the axial thickness of thin fan relatively.
2, make by magnetic conductive material owing to pedestal, therefore, when this impeller and the rotation of sheet shape magnet, this sheet shape magnet can corresponding magnetic pedestal itself, the mutual magnetic attraction of longitudinal balance is provided, and then increases the startup degree of balance and the stability of rotation of this impeller relatively, and can prevent the axial disengaging of impeller.
3, because therefore the structure characteristic of pedestal, coil, impeller and sheet shape magnet, can make its assembling oversimplify, increase its reliability.
Description of drawings
Fig. 1, be the three-dimensional exploded view of first embodiment of the invention.
Fig. 2, be the sectional view of first embodiment of the invention.
Fig. 3, be the sectional view of second embodiment of the invention.
Fig. 4, be the 3rd embodiment's three-dimensional exploded view.
Fig. 5, be the sectional view of third embodiment of the invention.
Embodiment
For allowing purpose of the present invention, technical characteristics and advantage thereof, can become apparent, preferred embodiment of the present invention cited below particularly, and conjunction with figs. is described in detail as follows:
Please refer to shown in Fig. 1,2, in the first embodiment of the invention, a kind of super thin fan mainly comprises: a pedestal 1, an axostylus axostyle 2, an assembly element 3, an impeller 4 and a slice shape magnet 5.This pedestal 1 can be considered stator component, and this axostylus axostyle 2, assembly element 3, impeller 4 and sheet shape magnet 5 can be considered rotor component, and according to product demand, and the line shaft of this rotor component is to thickness even can be reduced to below the 3mm.
Please refer to shown in Fig. 1,2, this pedestal 1 is made preferable by magnetic conductive material, for example iron or ferro-alloy.This pedestal 1 is provided with an axis hole 11, at least one coil 12, a driving element 13 and a bearing 14.This axis hole 11 is open shape, and its periphery is convex, and to be stretched into a central siphon 111 preferable.This coil 12 is flat, and ring is located at around this axis hole 11.This coil 12 feeds electric current and can produce alternating magnetic field.This driving element 13 is a single intergrated circuit encapsulated wafer, the change in polarity when rotating in order to respond to this sheet shape magnet 5.According to product demand, this driving element 13 also can be integrated into the drive circuit (not shown) that at least one associated electronic components constitutes in same the intergrated circuit encapsulated wafer, makes it can respond to change in polarity after energising and control these coil 12 energisings to produce alternating magnetic field.This driving element 13 is preferable between the outside of this coil 12 or two adjacent lines circles 12.This bearing 14 is cup-shaped, is placed in this central siphon 111, and seals this axis hole 11.This bearing 14 is with a rotating end that is incorporated into this axostylus axostyle 2, and the inner bottom part of this bearing 14 is in order to support the end of this axostylus axostyle 2.
Shown in Fig. 1,2, this assembly element 3 is made by magnetic conductive material, for example iron or ferro-alloy.This assembly element 3 is provided with an assembly hole 31, an axial ledge 32 and a radial flange 33.This axial ledge 32 is down protruded out vertically by these assembly hole 31 peripheries and forms, and this radial flange 33 is radially extended outward by this assembly hole 31 and forms.The internal face of this axial ledge 32 is consolidated in the other end of this axostylus axostyle 2, and its outer wall is solidly plugged in the center hole 41 of this impeller 4.These radial flange 33 lower surfaces are connected to the upper surface of the ring flat-plate 42 of this impeller 4.
Shown in Fig. 1,2, this impeller 4 can be made by modes such as punching press bending, ejection formation or castings, and being bent into preferablely by a plasticity plate punching press, after the punching press, this impeller 4 forms a center hole 41, a ring flat-plate 42, a plurality of calking 43 and a plurality of bending flabellum 44.This center hole 41 is formed at this ring flat-plate 42 central authorities, and cover is fixed in the outer wall of these assembly element 3 axial ledge 32.Each calking 43 is positioned at the outer periphery of these impeller 4 ring flat-plates 42, and each calking 43 corresponds respectively to corresponding bending flabellum 44, and each bends flabellum 44 by bending forming under corresponding calking 43 1 side direction.Each bends flabellum 44 and tilts to bend formation vertically with axial flow, produces axial flow to drive air-flow.The material of this plasticity plate selects for use the metal of tool high plasticity or plastics preferable, for example copper, aluminium, iron and alloy thereof; Or Polyimide (PI), polyamide (PA), polyester (PE) and composition thereof etc.
Shown in Fig. 1,2, this sheet shape magnet 5 is flat ring-type, is provided with a center hole 51, and these center hole 51 covers are fixed in the outer wall of the axial ledge 32 of this assembly element 3.Moreover in the axial direction, the axial upper and lower surface of this sheet shape magnet 5 has a plurality of phase different poles (N.S).A plurality of phase different poles (N.S) of this upper surface are in order to the radial flange 33 of this assembly element 3 of magnetic, so that utilize magnetic attraction to be clamped on this impeller 4.Simultaneously, this radial flange 33 also can prevent this sheet shape magnet 5 leakage fields.On the other hand, a plurality of phase different poles (N.S) of this lower surface are in order to responding to the alternating magnetic field that this coil 12 is produced, and promote this rotor component (axostylus axostyle 2, assembly element 3, impeller 4 and sheet shape magnet 5) by the magnetic force that constantly produces and rotate.
Referring again to shown in Figure 2, during assembling, at first tentatively in conjunction with this axostylus axostyle 2, assembly element 3, impeller 4 and sheet shape magnet 5, to form this rotor component.At this moment, it is preferable to be incorporated into this axostylus axostyle 2 with drive fit in the axial ledge of this assembly element 3 32, and its outer periphery are inserted in these impeller 4 center holes 41 and sheet shape magnet 5 center holes 51.This coil 12, assembly element 3, impeller 4 and sheet shape magnet 5 all are the flat sheet shape, and the radial flange 33 of this assembly element 3, the ring flat-plate 42 of impeller 4 and the line shaft of sheet shape magnet 5 can be reduced to below the 3mm to thickness.Therefore, under the preceding topic of above-mentioned very narrow thickness, the magnetic force of these sheet shape magnet 5 upper surfaces is enough to penetrate the ring flat-plate 42 of this impeller 4, is adsorbed in the corresponding lower surface of the radial flange 33 of this assembly element 3, and then utilizes the magnetic field adsorption force directly with ring flat-plate 42 clampings of this impeller 4.In case of necessity, only need use an amount of tackiness agent between the radial flange 33 of the upper surface of this sheet shape magnet 5, the ring flat-plate 42 of impeller 4 and assembly element 3, can make between each parts of this rotor component to have enough assembling intensity.At last, with in the rotating bearing 14 that is inserted in this pedestal 1 of an end of this axostylus axostyle 2, promptly be assembled into this super thin fan again.
More in detail, because this coil 12, assembly element 3, impeller 4 and sheet shape magnet 5 all are the flat sheet shape, this impeller 4 utilizes impact style to form number bending flabellum 44 in its outer periphery, and this axostylus axostyle 2 does not need can be assembled in this pedestal 1 and impeller 4 with the combination of complexity, therefore helps further reducing relatively the line shaft of super thin fan to thickness.On the other hand, make by magnetic conductive material because this pedestal 1 is preferable, therefore, when this impeller 4 and sheet shape magnet 5 rotation synchronously, this sheet shape magnet 5 also can corresponding magnetic this pedestal 1 itself, providing longitudinal balance required magnetic force, and then increase the startup balance and the stability of rotation of this impeller 4 relatively, and prevent the axial disengaging of this impeller 4.
Please refer to shown in Figure 3, the structure of second embodiment of the invention and first embodiment are basic identical, difference is: this pedestal 1 is made by the non-magnetic material among second embodiment, and is provided with a circuit board 15, at least one magnetic conduction balancing patch 16 and a sense cell 17.This circuit board 15 and magnetic conduction balancing patch 16 are located between this coil 12 and the pedestal 1.This magnetic conduction balancing patch 16 is annular, rectangle or fan-shaped sheet, and to being provided with by coil 12.This sense cell 17 is located on this circuit board 15, and between the outside or two adjacent lines circles 12 of this coil 12.This circuit board 15 is provided with the drive circuit (not shown) that at least one electronic component constitutes, and for the induced signal that receives and handle this sense cell 17, and then controls this coil 12 generation alternating magnetic fields.When this impeller 4 and sheet shape magnet 5 rotated synchronously, the magnetic conduction balancing patch 16 of this sheet shape magnet 5 on also can this pedestal 1 of corresponding magnetic was to provide longitudinal balance required magnetic force.Moreover this axis hole 11 is the blind hole shape, with a ccontaining bearing 14, therefore can use sleeve shape bearing 14.During assembling, these axostylus axostyle 2 one ends are rotating to be arranged in this bearing 14, and the end of this axostylus axostyle 2 supports in the inner bottom part of this axis hole 11.Therefore, second embodiment has relative minimizing fan axial thickness equally and increases the startup balance of this impeller 4 and advantage such as stability of rotation.
Please refer to shown in Fig. 4,5, the structure of third embodiment of the invention and first embodiment are basic identical, difference is: this pedestal 1 is made by the non-magnetic material among the 3rd embodiment, set up at least one magnetic conduction balancing patch 16 simultaneously, and the driving element 13 of a tool integration function also can be set merely, as: single intergrated circuit encapsulated wafer among first embodiment.Moreover the axis hole 11 of this pedestal 1 omits this bearing 14 is set, and is the cup-shaped of handstand but a bearing 6 these bearings 6 are set in addition, and is solidly plugged in drive fit in the assembly hole 31 of this assembly element 3.So, an end of this axostylus axostyle 2 directly is solidly plugged in the axis hole 11 of this pedestal 1, and the other end of this pavilion 2 is rotating simultaneously is solidly plugged in this bearing 6.In addition, each bends flabellum 44 by bending forming under the side direction of calking 43.This bending flabellum 44 produces Radial Flow with the vertical vertically bending forming of blowing-type to drive air-flow.Therefore, the 3rd embodiment helps reducing relatively the axial thickness of fan equally, and can increase the startup balance and the stability of rotation of this impeller 4 relatively.
As mentioned above, though commonly use small-sized fans is provided with flat respectively in this pedestal and rotor shell coil and ring magnet, to dwindle the axial thickness of rotor and stator, but this rotor shell still has excessive shortcomings such as axial thickness because of the restriction that is subjected to processing procedure and assembling, with commonly use small-sized fans and compare, the present invention forms impeller 4 with punching press bending plasticity plate, makes this impeller 4 have a plurality of bending flabellums 44 and axial thickness as thin as a wafer; Simultaneously, utilize the radial flange 33 of this assembly element 3 that this sheet shape magnet 5 is adsorbed on the ring flat-plate 42 of this impeller 4 with magnetic force.Therefore, the present invention can dwindle the fan axial thickness really relatively, is beneficial to fan design to compactization development, and also having simultaneously increases the effect that starts balance and stability of rotation.
Claims (18)
1, a kind of super thin fan, it comprises:
One pedestal, it is provided with an axis hole and at least one coil;
One axostylus axostyle, it has one first end and one second end;
One impeller, it has a ring flat-plate and a plurality of bending flabellum;
One assembled components, it has an assembly hole and a radial flange; And
A slice shape magnet, it forms two-phase different pole at least on a surface, this at least the two-phase different pole corresponding to this coil;
Wherein first end of this axostylus axostyle is inserted in the axis hole of this pedestal, and second end pass the ring flat-plate of this impeller and be incorporated into the assembly hole of this assembled components, and the radial flange that utilizes this assembled components combines the ring flat-plate of this impeller with the clamping of sheet shape magnet, with common composition one super thin fan.
2, super thin fan according to claim 1 is characterized in that: described impeller is formed by the bending of plasticity plate, and the outer periphery of this impeller have a plurality of calkings, and each bends to bend under the side direction of flabellum by corresponding calking and forms.
3, super thin fan according to claim 2 is characterized in that: described bending flabellum forms with the axial flow bending of tilting vertically.
4, according to super thin fan according to claim 2, it is characterized in that: described bending flabellum vertically bends vertically with blowing-type and forms.
5, super thin fan according to claim 1 is characterized in that: described assembly element is made by permeability magnetic material, and this sheet shape magnet is magneted in the radial flange of this assembly element, and this impeller ring flat-plate is clamped between the two.
6, super thin fan according to claim 1 is characterized in that: between the ring flat-plate of described shape magnet, impeller and the radial flange of assembly element in addition with bonding method in conjunction with fixing.
7, super thin fan according to claim 1 is characterized in that: described pedestal is made by magnetic conductive material, and this sheet shape magnet correspondence is magneted in this pedestal.
8, super thin fan according to claim 1 is characterized in that: wherein comprise at least one magnetic conduction balancing patch in addition, it is located between this coil and the pedestal, and this sheet shape magnet correspondence is magneted in this magnetic conduction balancing patch.
9, super thin fan according to claim 1 is characterized in that: described axis hole is open shape or blind hole shape.
10, super thin fan according to claim 1 is characterized in that: described axis hole is by the convex central siphon that is stretched into of periphery, the ccontaining bearing of this central siphon, rotating first end that is incorporated into this axostylus axostyle of this bearing.
11, super thin fan according to claim 10 is characterized in that: described bearing is sleeve shape or cup-shaped.
12, super thin fan according to claim 1 is characterized in that: the sense cell of change in polarity when wherein comprising induction piece shape magnet rotation in addition.
13, super thin fan according to claim 12 is characterized in that: wherein comprise the circuit board of being located on this pedestal in addition, this circuit board has at least one reception sense cell signal and produces the electronic component of alternating current to this coil.
14, super thin fan according to claim 1 is characterized in that: the driving element of change in polarity when wherein comprising this sheet shape magnet of induction in addition and rotating, and the drive circuit that at least one electronic component constitutes integrated wherein.
15, super thin fan according to claim 1, it is characterized in that: described assembly element is provided with one and down protrudes out the axial ledge that forms by the assembly hole periphery, the internal face of this axial ledge is incorporated into this axostylus axostyle second end, and outer wall is incorporated into this impeller and sheet shape magnet.
16, super thin fan according to claim 15 is characterized in that: wherein comprise a bearing in addition, its drive fit is incorporated in the assembly hole of this assembly element, and rotating second end in conjunction with this axostylus axostyle.
17, super thin fan according to claim 16 is characterized in that: described bearing is the cup-shaped of handstand.
18, super thin fan according to claim 1 is characterized in that: the convex central siphon that is stretched into of the periphery of described axis hole, it directly sets firmly first end of this axostylus axostyle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101346455A CN100432447C (en) | 2005-12-20 | 2005-12-20 | Super thin fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101346455A CN100432447C (en) | 2005-12-20 | 2005-12-20 | Super thin fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1987113A true CN1987113A (en) | 2007-06-27 |
| CN100432447C CN100432447C (en) | 2008-11-12 |
Family
ID=38184028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101346455A Expired - Fee Related CN100432447C (en) | 2005-12-20 | 2005-12-20 | Super thin fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100432447C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573698A (en) * | 2012-07-18 | 2014-02-12 | 建准电机工业股份有限公司 | Horizontal convection fan and fan wheel thereof |
| CN104235036A (en) * | 2013-06-19 | 2014-12-24 | 建准电机工业股份有限公司 | Heat radiation fan with balance function |
| CN101900127B (en) * | 2009-05-25 | 2015-04-15 | 建准电机工业股份有限公司 | Cooling fan |
| CN104564809A (en) * | 2015-01-28 | 2015-04-29 | 王春 | Rear fan for motor |
| CN106990653A (en) * | 2016-01-20 | 2017-07-28 | 精工爱普生株式会社 | Optical devices, light supply apparatus and projecting apparatus |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3371016D1 (en) * | 1982-12-10 | 1987-05-21 | Micronel Ag | Ventilator with an electronically commutated d.c. motor |
| DE19501533C3 (en) * | 1995-01-19 | 2000-01-13 | Bsh Bosch Siemens Hausgeraete | Fan wheel and method for manufacturing the same |
| JPH10174406A (en) * | 1996-12-13 | 1998-06-26 | Sanyo Electric Co Ltd | Brushless fan motor |
| CN2365427Y (en) * | 1998-10-29 | 2000-02-23 | 建准电机工业股份有限公司 | Balancing sheet type small radiating fan |
| TW519259U (en) * | 2001-08-31 | 2003-01-21 | Asia Vital Components Co Ltd | Improved structure of DC fan bearing fixation device |
| CN1179135C (en) * | 2001-09-05 | 2004-12-08 | 建准电机工业股份有限公司 | Radiating fans |
| CN200952482Y (en) * | 2006-09-13 | 2007-09-26 | 建凖电机工业股份有限公司 | Ultra-thin fan |
-
2005
- 2005-12-20 CN CNB2005101346455A patent/CN100432447C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900127B (en) * | 2009-05-25 | 2015-04-15 | 建准电机工业股份有限公司 | Cooling fan |
| CN103573698A (en) * | 2012-07-18 | 2014-02-12 | 建准电机工业股份有限公司 | Horizontal convection fan and fan wheel thereof |
| CN104235036A (en) * | 2013-06-19 | 2014-12-24 | 建准电机工业股份有限公司 | Heat radiation fan with balance function |
| CN104564809A (en) * | 2015-01-28 | 2015-04-29 | 王春 | Rear fan for motor |
| CN106990653A (en) * | 2016-01-20 | 2017-07-28 | 精工爱普生株式会社 | Optical devices, light supply apparatus and projecting apparatus |
| CN106990653B (en) * | 2016-01-20 | 2019-03-12 | 精工爱普生株式会社 | Optical devices, light supply apparatus and projector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100432447C (en) | 2008-11-12 |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20081112 Termination date: 20171220 |