CN102691667A

CN102691667A - Fan structure

Info

Publication number: CN102691667A
Application number: CN2011100741240A
Authority: CN
Inventors: 陈志彰; 吴俊男; 陈建培
Original assignee: Delta Optoelectronics Inc
Current assignee: Delta Optoelectronics Inc
Priority date: 2011-03-25
Filing date: 2011-03-25
Publication date: 2012-09-26
Anticipated expiration: 2031-03-25
Also published as: CN102691667B

Abstract

The invention discloses a fan structure comprising a fan frame, a base, a stator, a rotor, a dustproof cover and an impeller. The base is arranged in the fan frame; an annular wall is arranged at the outer edge of the base; the stator is arranged on the base; the annular wall surrounds the stator; the rotor is arranged correspondingly to the stator and a magnetic force is generated by the rotor and the stator; the dustproof cover is connected with the annular wall; the annular wall and the dustproof wall surround the stator and the rotor; and the impeller is coupled with the rotor.

Description

Fan structure

Technical field

The present invention relates to a kind of fan structure, particularly relate to a kind of fan structure that can effectively stop the dust foreign body intrusion.

Background technique

In general, can have the dust-tight effect in order to make fan, foreign matter entering such as anti-blocking dust are come in the path of portion's complex design within it often, to guarantee the running quality of fan under rugged environment.

See also Fig. 1, among existing fan structure 1, fan frame 10 is to enter to stator 30 places and/or bearing 20 places through each other the mode of inserting being intercepted dust with impeller 60.More specifically; Fan frame 10 is respectively to come inserting is put through a protuberance 12 of fan frame 10 pedestals 11 and the ring portion 62 of impeller 60 extensions with impeller 60; Shown in the regional A of Fig. 1; Enter to a circuit board 31 places and/or bearing 20 places of stator 30 to intercept dust, and then avoid circuit board 31 and/or bearing 20 to be damaged.

Yet fan structure 1 can have some shortcomings.At first, impeller 60 must keep enough gaps with fan frame 10 in the running.Therefore, the fan frame 10 (or ring wall 12) that inserting is put may cause interference phenomenon with impeller 60 (or ring portion 62), and then causes fan structure 1 that the unusual situation of running takes place.Moreover, because this kind is not very complicated to inserting the path that intercepts the dust invasion with fan frame 10 with impeller 60 each other, so a small amount of or more tiny dust still can be invaded circuit board 31 places and/or bearing 20 places to stator 30.Therefore, the dustproof effect that can reach of 1 of fan structure can be very limited.

Summary of the invention

The present invention adopts the characteristic that detailed as follows with in order to solve the above problems basically.That is to say, comprise a fan frame, a pedestal, a stator, a rotor, a dust cover and an impeller according to fan of the present invention.Pedestal is arranged in the fan frame, and the outer rim of pedestal has a ring wall, and stator is arranged on the pedestal; This ring wall is around stator, and rotor is corresponding to the stator setting, and produces magnetic force each other with stator; Dust cover is connected in ring wall, and wherein this ring wall and this dust cover are around this stator and this rotor, and this impeller is coupled in rotor; And this impeller coats stator and rotor, and this impeller drives its rotation by rotor.

Wherein this impeller more comprises a barricade, and barricade is with respect to the dust cover setting, and has the gap between barricade and the dust cover; This impeller comprises a wheel hub and a plurality of flabellum; It is peripheral that these a plurality of flabellums are set around this wheel hub, and this barricade is extended to the direction of this rotor by this wheel hub, and an end of this barricade connects this wheel hub; The other end extends downward this rotor top; And have the gap between this rotor, this dust cover and this barricade are all annular, and the setting that corresponds to each other.

Have a gap between rotor and the impeller, the ring wall of pedestal is arranged at the gap between rotor and impeller.One end of dust cover connects ring wall in the side direction of rotor, and the other end extends to the top of rotor, and dust cover is the member that separates with ring wall, preferablely connects with mutual snapping mode.

A preferable rotating shaft, the iron-clad and of comprising of rotor is arranged at the magnet ring in the iron-clad.Have a central siphon in the stator, rotating shaft is sheathed in the central siphon with the mode of rotating, and stator is arranged between central siphon and the ring wall, has at least one bearing in this central siphon, and in order to accept this rotating shaft, this central siphon is arranged at this pedestal central authorities, is formed in one with this pedestal.In addition, this fan frame, this pedestal and this ring wall are preferably one-body molded.

Simultaneously,, more comprise a binding member, be arranged between this rotating shaft and this iron-clad that in order to combine fixing this rotating shaft and this iron-clad, this iron-clad is preferably around this stator outside according to fan structure of the present invention.

The preferable mode with the plastic cement molding and forming of this binding member takes shape between this rotating shaft and this rotor, and this impeller is connected in this rotor through this binding member.

This binding member has a column, and this impeller has more a joining hole, and this column passes this joining hole and is connected to this impeller, preferable this joining hole that is fused to of this column.

For make above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, hereinafter is special to be lifted preferred embodiment and also cooperates appended accompanying drawing to elaborate.

Description of drawings

Fig. 1 is the generalized section that shows a kind of existing fan structure;

Fig. 2 is the generalized section that shows fan structure of the present invention; And

Fig. 3 is the decomposing schematic representation that shows according to Fig. 2.

The primary component symbol description

1,100～fan structure

10,110～fan frame

11,111～pedestal

12～protuberance

20,120～bearing

30,130～stator

31,131～circuit board

60,180～impeller

62～ring portion

112～ring wall

113～central siphon

140～rotating shaft

151～iron-clad

152～magnet ring

160～binding member

161～column

170～annular dust cover

181～annular barricade

182～joining hole

183～flabellum

184～wheel hub

Embodiment

Now conjunction with figs. is explained preferred embodiment of the present invention.

See also Fig. 2 and Fig. 3, the fan structure 100 of present embodiment mainly includes a fan frame 110, a pedestal 111, a stator 130, a rotor, a dust cover 170 and an impeller 180.Rotor is preferable to comprise that a rotating shaft 140, an iron-clad 151 and are arranged at the magnet ring 152 in the iron-clad 151.Have a central siphon 113 in the stator 130, stator 130 is arranged between central siphon 113 and the ring wall 112, has at least one bearing in this central siphon, and in order to accept this rotating shaft, at this, bearing 120 can be the form of an oil-impregnated bearing or a ball bearing.This central siphon 113 is arranged at this pedestal 111 central authorities, can be separating member or one-body molded with this pedestal 111.In addition, this fan frame 110, this pedestal 111 and this ring wall 112 are preferably one-body molded.

Pedestal 111 is arranged in the fan frame 110, and the outer rim of pedestal 111 has a ring wall 112, and stator 130 is arranged on the pedestal 111; This ring wall 112 is around stator 130, and rotating shaft 140 is to be sheathed in the stator 130 with the mode of rotating, and rotor is provided with corresponding to stator 130; And produce magnetic forces each other with stator 130; Dust cover 170 is connected in ring wall 112, and wherein this ring wall 112 and this dust cover 170 are around this stator 130, this magnet ring 152 and this iron-clad 151, and this impeller 180 is coupled in this rotor; And this impeller 180 coats stator 130 and rotor, and this impeller 180 drives its rotation by rotor.

Wherein this impeller 180 more comprises a barricade 181, and barricade 181 is provided with respect to dust cover 170, and has the gap between barricade 181 and the dust cover 170; This impeller 180 comprises a wheel hub 184 and a plurality of flabellum 183 that is connected in wheel hub 184; These a plurality of flabellums 183 are set around this wheel hub 184 peripheries, and this barricade 181 is extended to the direction of the iron-clad 151 of rotor by this wheel hub 184, and an end of this barricade 181 connects this wheel hub 184; The other end extends downward iron-clad 151 tops of rotor; And 151 of iron-clads have the gap, and this dust cover 170 and this barricade 181 are all annular, and the setting that corresponds to each other.

Have a gap between rotor iron-clad 151 and the impeller 180, the ring wall 112 of pedestal 111 extends upward around this pedestal 111, and is arranged at the gap of 180 in rotor iron-clad 151 and impeller.One end of dust cover 170 connects ring wall 112, and the other end extends to the top of rotor, and dust cover 170 and ring wall 112 are preferable to be connected with the snapping mode.

Iron-clad 151 is to be connected in rotating shaft 140 through binding member 160.In other words, binding member 160 is to take shape between rotating shaft 140 and the iron-clad 151, to combine fixed rotating shaft 140 and iron-clad 151.It should be noted that among present embodiment the mode that binding member 160 can the plastic cement molding and forming takes shape between rotating shaft 140 and the iron-clad 151.

In addition; Impeller 180 also is to be connected in rotor through binding member 160; Binding member 160 has a plurality of columns 161; Impeller 180 has a plurality of joining holes 182 (as shown in Figure 3), and the column 161 of binding member 160 is to pass the joining hole 182 of impeller 180 and be connected to impeller 180 (as shown in Figure 2).Then, column 161 can be fused to joining hole 182, to reach the linking steady character between rotor and the impeller 180.

As stated; Ring wall 112 and dust cover 170 are round bearing 120, stator 130 and rotor; And collocation is toward the barricade 181 that extends below; Make path circuitousization more of entering stator of foreign matter such as dust, thereby can intercept circuit board 131 places and/or bearing 120 places that foreign matter such as extraneous dust gets into stators 130, be damaged to avoid circuit board 131 and/or bearing 120.

In addition, the fan structure 100 that present embodiment disclosed is except can having excellent dustproof effect, and it can also have other advantage.For instance, because the mode that binding member 160 can the plastic cement molding and forming takes shape between rotating shaft 140 and the rotor, so the suitable excellence of the running counterbalance effect of rotating shaft 140 and rotor.In addition, because fan structure 100 is to utilize the binding member 160 of plastic cement molding and forming to combine rotating shaft 140, rotor and impeller 180,, the integral body of fan structure 100 is lowered so manufacturing instinct.In addition, among the fan structure 100 that present embodiment disclosed, the interference phenomenon between fan frame 110 and the impeller 180 can be avoided.In other words, fan structure 100 can keep smooth operation when having excellent dustproof effect.

Though disclosed the present invention in conjunction with above preferred embodiment; Yet it is not in order to limiting the present invention, anyly is familiar with this operator, is not breaking away from the spirit and scope of the present invention; Can do a little change and retouching, thus protection scope of the present invention should with enclose claim was defined is as the criterion.

Claims

1. fan comprises:

The fan frame;

Pedestal is arranged in this fan frame, and the outer rim of this pedestal has a ring wall;

Stator is arranged on this pedestal;

Rotor is provided with corresponding to this stator, and produces magnetic force each other with this stator;

Dust cover is connected in this ring wall, and wherein this ring wall and this dust cover are around this stator and this rotor; And

Impeller is coupled in this rotor.

2. fan structure as claimed in claim 1, wherein this impeller also comprises barricade, this barricade is with respect to this dust cover setting, and has the gap between this barricade and this dust cover.

3. fan structure as claimed in claim 2, wherein this impeller comprises wheel hub and a plurality of flabellum, and it is peripheral that these a plurality of flabellums are set around this wheel hub, and this barricade is extended to the direction of this rotor by this wheel hub.

4. fan structure as claimed in claim 3, wherein an end of this barricade connects this wheel hub, and the other end extends downward this rotor top, and has the gap between this rotor.

5. fan structure as claimed in claim 2, wherein this dust cover and this barricade are the corresponding setting of annular.

6. fan structure as claimed in claim 1 wherein has a gap between this rotor and this impeller, and this ring wall of this pedestal is arranged at this gap between this rotor and this impeller.

7. fan structure as claimed in claim 6, wherein an end of this dust cover connects this ring wall in the side direction of this rotor, and the other end extends to the top of this rotor.

8. fan structure as claimed in claim 7, wherein this dust cover is the member that separates with this ring wall, connects with the snapping mode.

9. fan structure as claimed in claim 1, wherein this rotor comprises rotating shaft, iron-clad and is arranged at the magnet ring in the iron-clad.

10. fan structure as claimed in claim 1 wherein has central siphon in this stator, has at least one bearing in this central siphon, in order to accept this rotating shaft.

11. fan structure as claimed in claim 9, wherein this this central siphon is arranged at this pedestal central authorities, is formed in one with this pedestal.

12. fan structure as claimed in claim 9 also comprises binding member, is to be arranged between this rotating shaft and this iron-clad, in order to combine fixing this rotating shaft and this iron-clad.

13. fan structure as claimed in claim 12, wherein this binding member is that mode with the plastic cement molding and forming takes shape between this rotating shaft and this iron-clad.

14. fan structure as claimed in claim 12, wherein this impeller is to be connected in this rotor through this binding member.

15. fan structure as claimed in claim 14, wherein this binding member has column, and this impeller also has joining hole, and this column is to pass this joining hole, and is connected to this impeller.

16. fan structure as claimed in claim 15, wherein this column is fused to this joining hole.

17. fan structure as claimed in claim 1, wherein this fan frame, this pedestal and this ring wall are formed in one.