CN1987114A - Thin type fan - Google Patents

Thin type fan Download PDF

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Publication number
CN1987114A
CN1987114A CN 200510134646 CN200510134646A CN1987114A CN 1987114 A CN1987114 A CN 1987114A CN 200510134646 CN200510134646 CN 200510134646 CN 200510134646 A CN200510134646 A CN 200510134646A CN 1987114 A CN1987114 A CN 1987114A
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CN
China
Prior art keywords
impeller
thin fan
fan according
shape magnet
pedestal
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Granted
Application number
CN 200510134646
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Chinese (zh)
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CN100427766C (en
Inventor
洪银树
尹佐国
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Sunonwealth Electric Machine Industry Co Ltd
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Sunonwealth Electric Machine Industry Co Ltd
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Priority to CNB200510134646XA priority Critical patent/CN100427766C/en
Publication of CN1987114A publication Critical patent/CN1987114A/en
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Publication of CN100427766C publication Critical patent/CN100427766C/en
Expired - Fee Related legal-status Critical Current
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Abstract

A 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, a magnet sheet with at least one pair of N and S poles on its surface, and an axle.

Description

Thin fan
Technical field
The present invention relates to fan, particularly about directly constituting an impeller by a ring flat-plate and a plurality of bending flabellum, can omit used rotor shell, so dwindle whole axial thickness, assembling simple and reliable, increase the thin fan that this impeller starts degree of balance and stability of rotation.
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, equidistant radial this flabellum that is 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 this rotor shell inside, and ring is located at around this axostylus axostyle.When this two coil energising produced alternating magnetic field, this ring magnet was responded to this alternating magnetic field, thereby drove this impeller rotation.
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 cooperation 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 position of this impeller must one be convexly equipped with an axle bed, in conjunction with this axostylus axostyle, but the also inevitable axial thickness that increases this rotor shell relatively of the setting of this axle bed.As a result, usually greater than 5mm, restriction further is designed to the feasibility of more compactization to this line shaft of rotor portion of commonly using small-sized fans relatively to thickness.For these reasons, be necessary really further to be improved to commonly using thin fan.
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, this impeller and a slice shape magnet are offered an assembly hole respectively to wear in conjunction with an axostylus axostyle.By this, the present invention can dwindle the whole axial thickness of fan relatively, is beneficial to the designs of fan to compactization.
Summary of the invention
Main purpose of the present invention provides and a kind ofly constitutes an impeller by a ring flat-plate and a plurality of bending flabellum, can dwindle the thin fan of fan axial thickness.
Secondary objective of the present invention provides a kind of impeller and sheet shape magnet and offers an assembly hole respectively wearing in conjunction with an axostylus axostyle, and this sheet shape magnet utilizes the magnetic mode to be incorporated into this impeller, can simplify the thin fan of rotor component assembling.
The assembly hole periphery that another object of the present invention provides one of a kind of impeller or sheet shape magnet extends into an axial ledge, cooperatively interacts and wear an axostylus axostyle to be combined as a whole, and can increase the thin fan of rotor component assembling reliability.
A further object of the present invention provides a kind of impeller and utilizes the axial alternating magnetic field that at least one coil produced on the sheet shape magnet induction pedestal, and this pedestal made by magnetic conductive material, can increase the startup degree of balance of impeller and the thin fan of stability of rotation.
Another purpose of the present invention provides a kind of impeller and utilizes the axial alternating magnetic field that at least one coil produced on the sheet shape magnet induction pedestal, and this pedestal correspondence is provided with at least one magnetic conduction balancing patch, can increase the thin fan of stability of rotation.
Technological scheme of the present invention:
A kind of 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, an assembly hole and a plurality of bending flabellum; And a slice shape magnet, it has an assembly hole and two-phase different pole at least, 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 is selected to wear in conjunction with the assembly hole of this impeller and the assembly hole of sheet shape magnet, with common composition one 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 strikes out the bending flabellum by plate, 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 is the three-dimensional exploded view of first embodiment of the invention.
Fig. 2 is the sectional view of first embodiment of the invention.
Fig. 3 is the sectional view of second embodiment of the invention.
Fig. 4 is the sectional view of third embodiment of the invention.
Fig. 5 is the sectional view of fourth embodiment of the invention.
Embodiment
For allowing above-mentioned 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 thin fan mainly comprises: a pedestal 1, an axostylus axostyle 2, an impeller 3 and a slice shape magnet 4.This pedestal 1 can be considered stator component, and this axostylus axostyle 2, impeller 3 and sheet shape magnet 4 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 set as a central siphon 111 preferable.This coil 12 is flat, the ring be located at this axis hole 11 around.This coil 12 feeds electric current and produces alternating magnetic field.This driving element 13 is a single integrated circuit encapsulation chip, the change in polarity when rotating in order to respond to this sheet shape magnet 4.According to product demand, this driving element 13 also can be integrated into the drive circuit (not shown) that is made of at least one associated electronic components in same the integrated circuit encapsulation chip, the alternating magnetic field that can respond to change in polarity and control this coil 12 after its energising.This driving element 13 is preferable between the outside of this coil 12 or each two adjacent lines circle 12.This bearing 14 is cup-shaped, is placed in this central siphon 111, and seals this axis hole 11.This bearing 14 is incorporated into an end of this axostylus axostyle 2 rotationally, 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 impeller 3 is made by modes such as punching press bending, ejection formation or castings, be bent into preferablely by a plasticity plate punching press, after punching press, this impeller 3 forms an assembly hole 31, a ring flat-plate 32, a plurality of calking 33 and a plurality of bending flabellum 34.This assembly hole 31 is formed at this ring flat-plate 32 central authorities, and it is consolidated in the other end of this axostylus axostyle 2.Each calking 33 is positioned at ring flat-plate 32 outer periphery of this impeller 3, and each calking 33 correspondence respectively bends flabellum 34, and this bending flabellum 34 is by bending forming under each calking 33 1 side direction.34 of this bending flabellums form with the axial flow bending of tilting vertically, produce axial flow to drive air-flow; Perhaps can also blowing-type vertically vertically bending form, produce Radial 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; Or Polyimide (PI), polyamide (PA), polyester (PE), and composition thereof etc.
Shown in Fig. 1,2, this sheet shape magnet 4 is flat ring-type, is provided with an assembly hole 41, and this assembly hole 41 is consolidated in the other end of this axostylus axostyle 2.Moreover, in the axial direction, this sheet shape magnet 4 has several phase different poles N.S at lower surface at least, and this several phase different pole N.S is in order to responding to the alternating magnetic field that this coil 12 is produced, and the magnetic force that constantly produces of mat promotes this rotor component (axostylus axostyle 2, impeller 3 and sheet shape magnet 4) and rotates.Particularly, this sheet shape magnet 4 is preferable also to form this several phase different pole N.S at upper surface, and this impeller 3 is by the material of tool magnetic conductivity, and for example iron or ferro-alloy are made, and so this sheet shape magnet 4 can utilize magnetic force to be incorporated into the ring flat-plate 32 of this impeller 3.
Referring again to shown in Figure 2, when assembling, at first tentatively in conjunction with this axostylus axostyle 2, impeller 3 and sheet shape magnet 4, to form this rotor component.At this moment, the assembly hole 41 of the assembly hole 31 of this impeller 3 and sheet shape magnet 4 is incorporated into the other end of this axostylus axostyle 2 with drive fit.These sheet shape magnet 4 preferable ring flat-plates 32 that utilize the magnetic mode to be incorporated into this impeller 3 simultaneously.Among first embodiment, this coil 12, impeller 3 and sheet shape magnet 4 are the flat sheet shape, and the line shaft of the ring flat-plate 32 of this impeller 3 and sheet shape magnet 4 can be reduced to below the 3mm to thickness.In case of necessity, only need use an amount of sticker layer between ring flat-plate 32 lower surfaces of the upper surface of this sheet shape magnet 4 and impeller 3, so can make between each member of this rotor to have enough assembling intensity.At last, the end with this axostylus axostyle 2 is inserted in the bearing 14 of this pedestal 1 in rotating mode again, promptly is assembled into this thin fan.
More in detail, because this coil 12, impeller 3 and sheet shape magnet 4 all are the flat sheet shape, this impeller 3 utilizes impact style to form this bending flabellum 34 in outer periphery, and this axostylus axostyle 2 does not need to be incorporated into this pedestal 1 and impeller 3 with the combination of complexity, therefore, help further reducing relatively the line shaft of thin fan to thickness.On the other hand, because this pedestal 1 is made by magnetic conductive material, therefore, when this impeller 3 and sheet shape magnet 4 rotation synchronously, this sheet shape magnet 4 also can corresponding magnetic this pedestal 1 itself, so that the mutual magnetic active force of longitudinal balance to be provided, and then the balance that increases this impeller 3 relatively starts and stability of rotation, and prevents the axial disengaging of this impeller 3.
Please refer to shown in Figure 3, the structure of second embodiment of the invention and first embodiment are basic identical, difference is: among second embodiment, pedestal 1 is made by the non-magnetic material, is provided with a circuit board 15, at least one magnetic conduction balancing patch 16 and a sense cell 17 simultaneously.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 the plate of ring flat-plate shape, rectangle sheet or fan-shaped sheet, and with these coil 12 corresponding settings.This sense cell 17 is located on this circuit board 15, and between the outside or each two adjacent lines circle 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 the alternating magnetic field that this coil 12 is produced.When this impeller 3 and sheet shape magnet 4 rotated synchronously, the magnetic conduction balancing patch 16 of this sheet shape magnet 4 on also can this pedestal 1 of corresponding magnetic was to provide the mutual magnetic active force of longitudinal balance.Moreover this axis hole 11 is the blind hole shape, and with a ccontaining bearing 14, this bearing 14 is sleeve shape.When assembling, an end of this axostylus axostyle 2 is 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 balance that has relative minimizing fan axial thickness equally and increase this impeller 3 starts and advantage such as stability of rotation.
Please refer to shown in the 4th figure, the structure of third embodiment of the invention and first embodiment are basic identical, difference is: among the 3rd embodiment, the antelabium of the assembly hole 41 of sheet shape magnet 4 extends upward to an axial ledge 42, to prolong the axial length of this assembly hole 41.In when assembling, the assembly hole 41 in this axial ledge 42 is in order to inserting the other end of solid this axostylus axostyle 2, and the assembly hole 31 of this impeller 3 then cover is fixed in the outer wall of this axial ledge 42.Therefore, the 3rd embodiment also can further increase the assembling reliability except the axial thickness and startup of increase balance and stability of rotation of relative minimizing fan.
Please refer to shown in Figure 5ly, the structure of fourth embodiment of the invention and first embodiment are basic identical, and difference is: among the 4th embodiment, the antelabium of the assembly hole 31 of impeller 3 extends into an axial ledge 35 downwards, to prolong the axial length of this assembly hole 31.During assembling, assembly holes 31 covers in this axial ledge 35 are fixed in the other end of this axostylus axostyle 2, and the assembly hole 41 of this sheet shape magnet 4 then cover is fixed in the outer wall of this axial ledge 35.Therefore, the 4th embodiment also can further increase the assembling reliability except the axial thickness and startup of increase balance and stability of rotation of relative minimizing fan.
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 is still because of being subjected to the restriction of processing procedure and package assembly, and have excessive shortcomings such as axial thickness, the present invention then mat punching press bends a plasticity plate, forms this impeller 3, makes this impeller 3 have a plurality of bending flabellums 34 and axial thickness as thin as a wafer; Simultaneously, utilize assembly hole 31, the 41 direct covers of this impeller 3 and sheet shape magnet 4 to be fixed in this axostylus axostyle 2.Therefore, the present invention can dwindle the fan axial thickness relatively, is beneficial to the design direction development to compactization of fan, also has the effect that increases balance startup and stability of rotation simultaneously.

Claims (16)

1, a kind of 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, an assembly hole and a plurality of bending flabellum; And
A slice shape magnet, it has an assembly hole and two-phase different pole at least, 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 is selected to wear in conjunction with the assembly hole of this impeller and the assembly hole of sheet shape magnet, with common composition one thin fan.
2, thin fan according to claim 1 is characterized in that: described impeller is made by the tool magnetic conductive material, and this sheet shape magnet is incorporated into the ring flat-plate of this impeller with magnetic force.
3, thin fan according to claim 1 is characterized in that: described impeller is formed by the bending of plasticity plate, and the ring flat-plate outer periphery of this impeller are provided with a plurality of calkings, and each bends flabellum and forms by bending under this calking one side direction.
4, thin fan according to claim 3 is characterized in that: described bending flabellum forms with the axial flow bending of tilting vertically.
5, thin fan according to claim 3 is characterized in that: described bending flabellum vertically bends vertically with blowing-type and forms.
6, thin fan according to claim 1 is characterized in that: the antelabium of described shape magnet assembly hole extends upward to an axial ledge, and the assembly hole of this impeller is sheathed on the outer wall of this axial ledge.
7, thin fan according to claim 1 is characterized in that: the antelabium of described impeller assembly hole extends into an axial ledge downwards, and the assembly hole of this sheet shape magnet is sheathed on the outer wall of this axial ledge.
8, thin fan according to claim 1 is characterized in that: combine with bonding method in addition between the lower surface of the upper surface of described shape magnet and the ring flat-plate of impeller and fix.
9, thin fan according to claim 1 is characterized in that: described pedestal is made by magnetic conductive material, corresponding this pedestal of magnetic of this sheet shape magnet.
10, thin fan according to claim 1 is characterized in that: be provided with at least one magnetic conduction balancing patch between described coil and pedestal, corresponding this magnetic conduction balancing patch of magnetic of this sheet shape magnet.
11, thin fan according to claim 1 is characterized in that: the axis hole of described pedestal is open shape or blind hole shape.
12, thin fan according to claim 1 is characterized in that: described axis hole is by the convex central siphon that is set as of periphery, and a bearing is solidly plugged in this central siphon, and axostylus axostyle first end is rotating is incorporated in this bearing for this.
13, thin fan according to claim 12 is characterized in that: described bearing is sleeve shape or cup-shaped.
14, thin fan according to claim 1 is characterized in that: the sense cell of change in polarity when wherein comprising this sheet shape magnet rotation of an induction in addition.
15, thin fan according to claim 14 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 signal that this sense cell produces, and produces the electronic component of alternating current to this coil.
16, thin fan according to claim 1 is characterized in that: the driving element of change in polarity when wherein comprising this sheet shape magnet rotation of an induction in addition, and the drive circuit that will be made of an electronic component is at least integrated wherein.
CNB200510134646XA 2005-12-20 2005-12-20 Thin type fan Expired - Fee Related CN100427766C (en)

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Application Number Priority Date Filing Date Title
CNB200510134646XA CN100427766C (en) 2005-12-20 2005-12-20 Thin type fan

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Application Number Priority Date Filing Date Title
CNB200510134646XA CN100427766C (en) 2005-12-20 2005-12-20 Thin type fan

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CN1987114A true CN1987114A (en) 2007-06-27
CN100427766C CN100427766C (en) 2008-10-22

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Cited By (6)

* Cited by examiner, † Cited by third party
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
CN103912508A (en) * 2013-01-04 2014-07-09 建准电机工业股份有限公司 Miniature cooling fan and coil substrate thereof
CN104033419A (en) * 2013-03-05 2014-09-10 建准电机工业股份有限公司 Fan wheel manufacturing method
CN101900127B (en) * 2009-05-25 2015-04-15 建准电机工业股份有限公司 Cooling fan
CN107659004A (en) * 2016-07-25 2018-02-02 台达电子工业股份有限公司 Mini-fan
CN111238031A (en) * 2020-02-17 2020-06-05 兰云 Oil drum heater

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Publication number Priority date Publication date Assignee Title
DE3933868B4 (en) * 1989-10-11 2004-07-01 Robert Bosch Gmbh Blower with an electronically commutated drive 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
CN2366596Y (en) * 1999-03-08 2000-03-01 建准电机工业股份有限公司 Shaft structure of heat radiation fan
CN2451779Y (en) * 2000-11-28 2001-10-03 建准电机工业股份有限公司 Rotor assembling apparatus for brushless DC motor
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
CN200952483Y (en) * 2006-09-13 2007-09-26 建凖电机工业股份有限公司 Thin fan

Cited By (8)

* Cited by examiner, † Cited by third party
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
CN103912508A (en) * 2013-01-04 2014-07-09 建准电机工业股份有限公司 Miniature cooling fan and coil substrate thereof
CN103912508B (en) * 2013-01-04 2018-07-03 建准电机工业股份有限公司 Centrifugal Minitype radiating fan
CN104033419A (en) * 2013-03-05 2014-09-10 建准电机工业股份有限公司 Fan wheel manufacturing method
CN104033419B (en) * 2013-03-05 2016-08-10 建准电机工业股份有限公司 Impeller manufacture method
CN107659004A (en) * 2016-07-25 2018-02-02 台达电子工业股份有限公司 Mini-fan
CN111238031A (en) * 2020-02-17 2020-06-05 兰云 Oil drum heater

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