CN101092993A

CN101092993A - Fan and bearing seat

Info

Publication number: CN101092993A
Application number: CN 200710140983
Authority: CN
Inventors: 陈彦宏; 徐国栋
Original assignee: Delta Optoelectronics Inc
Current assignee: Taida Electronic Industry Co Ltd; Delta Optoelectronics Inc
Priority date: 2007-08-15
Filing date: 2007-08-15
Publication date: 2007-12-26
Anticipated expiration: 2027-08-15
Also published as: CN101092993B

Abstract

This invention discloses a bearing base including a metal base and a bearing jacket, in which an open-end is set at the center of the base, a through hole or an intensifying part is close to it and the bearing jacket is connected with the metal base by a jet molding mode. This invention also discloses a fan including an impeller, a bearing base, a stator structure and a rotor structure, in which the bearing base includes a metal base and a bearing jacket, an open-end is set at the center of the metal base, a through hole or an intensifying part is set beside it, the bearing jacket is connected with the base by a jet molding mode, the stator structure is set at the outer edge of the bearing jacket and the rotor is set corresponding to the stator, the impeller is connected with the rotor structure. Since a bearing jacket molded by jetting plastics is used in this invention, cost is lower than metal components, besides, the jacket is connected with through hole or an intensifying part, strength of the structure is guaranteed.

Description

Fan and bearing support thereof

Technical field

The present invention relates to a kind of fan and bearing support thereof, relate in particular to a kind of bearing support of making by ejection formation and fan with this bearing support.

Background technique

Along with electronic product develops rapidly towards high-performance, high frequency, high-speed and lightening direction, the heating temperature of electronic product is more and more higher, thereby be easy to generate wild effect, influence product reliability and working life, therefore heat radiation has become one of important topic of electronic product, and fan is common heat-dissipating part, therefore reduces the cost of fan and guarantees that its usefulness has become the emphasis direction that further develops.

Existing a kind of fan comprises metallic base, bearing housing, motor and impeller.The material of bearing housing is copper or aluminium, and itself and metallic base link by riveted construction.Motor is sheathed on the bearing housing, and the rotating shaft of motor is arranged in the bearing housing.The outer rim of impeller and motor links, and rotates by means of the driving of motor.

Also known a kind of like this fan, the bearing housing of this fan and metallic base link by close-fitting or some glue.Consider structural strength, the material of the bearing housing of these two kinds of fans is all metal, thereby has increased cost.

Therefore, provide a kind of and can guarantee that structural strength and the bearing support that reduces cost, motor and fan have become one of current important topic.

Summary of the invention

In view of described problem, purpose of the present invention can be guaranteed structural strength and bearing support that reduces cost and fan for providing a kind of.

For realizing described purpose, bearing support provided by the present invention comprises metallic base and bearing housing.The metallic base center has opening, has an at least one through hole or a strengthening section at the adjacent openings place.Bearing housing links by injection molding method and metallic base.

For realizing described purpose, fan provided by the invention comprises impeller, bearing support, stator structure and rotor structure.This bearing support has metallic base and bearing housing, and the center of metallic base has opening, has an at least one through hole or a strengthening section at the adjacent openings place, and bearing housing links by injection molding method and metallic base.Stator structure is set at the outer periphery of bearing housing.The corresponding setting of rotor structure with stator structure.Impeller and rotor structure link.

The present invention is owing to the bearing housing that has used by the plastics ejection formation, so cost is lower than metal construction.In addition, because bearing housing and through hole or strengthening section binding, thereby can guarantee structural strength.

Description of drawings

Fig. 1 is a kind of schematic representation of existing fan;

Fig. 2 is the schematic representation of another kind of existing fan;

Fig. 3 is the fan schematic representation of one embodiment of the present invention;

Fig. 4 A to Fig. 4 D is the schematic representation of the different modification of the metallic base of fan of the preferred embodiments of the present invention and through hole.

Description of reference numerals

1,1a fan

11,11a, 311,411,511,611 metallic bases

12,12a, 312 bearing housings

13,3 motors

131,331 rotating shafts

14,4 impellers

15 riveted constructions

31 bearing supports

32 stator structures

33 rotor structures

34 magnetic conduction shells

513,613 bottoms

514 sidepieces

615,715 strengthening sections

The B stopper part

H, H1, H2, H3 through hole

The O opening

Embodiment

Fig. 1 shows existing fan 1, and as mentioned above, it comprises metallic base 11, bearing housing 12, motor 13 and impeller 14.The material of bearing housing 12 is copper or aluminium, and itself and metallic base 11 link by riveted construction 15.Motor 13 is sheathed on the bearing housing 12, and the rotating shaft 131 of motor 13 is arranged in the bearing housing 12.Impeller 14 links with motor 13 outer rims, and rotates by means of the driving of motor 13.

Fig. 2 shows another kind of existing fan 1a.The bearing housing 12a of this fan 1a and metallic base 11a link by close-fitting or some glue.Consider structural strength, the material of the bearing housing 12 of fan 1,1a all uses metal.

Hereinafter with reference to bearing support, motor and the fan of other description of drawings one embodiment of the present invention, in the accompanying drawing, identical parts will be represented with identical reference character.

Please refer to Fig. 3, the fan of one embodiment of the present invention comprises impeller 4, bearing support 31, stator structure 32, rotor structure 33 and magnetic conduction shell 34.Bearing support 31 has metallic base 311 and bearing housing 312, and the center of metallic base 311 has opening O, and has at least one through hole H in adjacent openings O place.Bearing housing 312 links by injection molding method and metallic base 311.In this, bearing housing 312 coats periphery and the through hole H of opening O.The material of metallic base 311 can be single metal or alloy.The material of bearing housing 312 can be plastics, for example cooling curing plastic, thermohardening type plastics or light-cured type plastics, but be not limited to these materials.

Stator structure 32 and rotor structure 33 are placed in the magnetic conduction shell 34.Stator structure 32 is arranged on the outer periphery of bearing housing 312, and it can comprise the silicon steel sheet group.In addition, exceed and formulate the axial motion of substructure 32, the outer periphery of bearing housing 312 have at least one stopper part B, and stopper part B contacts with stator structure 32 and fixed stator structure 32.Stopper part B can be one-body molded with bearing housing 312, and be convexly equipped with from bearing housing 312 outer rims; Or form by heat-fused portion bearing housing 312.

Rotor structure 33 and stator structure 32 corresponding settings, rotor structure 33 has the rotating shaft 331 that is arranged in bearing housing 312 and comprises magnet.Impeller 4 links with magnetic conduction shell 34.

Present embodiment to the concrete structure of stator structure 32, rotor structure 33 and impeller 4 without limits.Technological points of the present invention is: bearing housing 312 links by injection molding method and metallic base 311, thereby can reduce cost and can guarantee structural strength.

In the present embodiment, metallic base 311 and through hole H thereof can have multiple modification, are the example explanation with Fig. 4 A to Fig. 4 D below, and certainly, it also can have other more modification.

Shown in Fig. 4 A, the through hole H1 of metallic base 411 is rounded.Shown in Fig. 4 B, the through hole H2 of metallic base 511 is trapezoidal.Certainly, the through hole of present embodiment also can be other shape, such as but not limited to rectangle or polygonal.In addition, metallic base 511 has bottom 513 and sidepiece 514, and through hole H2 513 extends to sidepiece 514 from the bottom.

Please refer to Fig. 4 C, metallic base 611 also has at least one strengthening section 615 except through hole H3.When bearing housing 312 and metallic base 611 ejection formations, also link with strengthening section 615.Strengthening section 615 can comprise protuberance, recess or their composite structure.In this example, strengthening section 615 is convexly equipped with by the periphery of the opening O of metallic base 611, and in addition, strengthening section 615 also can be arranged at the bottom 613 of metallic base 611, and can be protuberance or recess.The present invention to the shape of strengthening section without limits, for example strengthening section 615 can be trapezoidal.In addition, the strengthening section shown in Fig. 4 D 715 is a T shape.Certainly, strengthening section 715 also can be rectangle, circle or polygonal etc.

In sum, fan of the present invention makes bearing housing link by injection molding method and metallic base, and has the through hole or the strengthening section of the opening that is linked to metallic base.Compared with prior art, the present invention is owing to the bearing housing that has used by the plastics ejection formation, so cost is lower than metal construction.In addition, because bearing housing and through hole or strengthening section binding, thereby can guarantee structural strength.

Below only for illustrating, rather than limitation of the present invention.Any equivalent transformation of under the prerequisite that does not exceed design of the present invention and scope the present invention being made or modification all should fall in the claimed scope of appended claim.

Claims

1, a kind of bearing support comprises:

One metallic base, its center has an opening, and has an at least one through hole or a strengthening section in contiguous this opening; And

One bearing housing, it links by injection molding method and affiliated metallic base.

2, bearing support as claimed in claim 1, wherein, described strengthening section comprises a protuberance, a recess or their composite structure.

3, bearing support as claimed in claim 1, wherein, described strengthening section is T-shaped, rectangle, trapezoidal, circle or polygonal, and described through hole is rounded, trapezoidal, rectangle or polygonal.

4, bearing support as claimed in claim 1, wherein, the material of described bearing housing is plastics, cooling curing plastic, thermohardening type plastics or light-cured type plastics.

5, bearing support as claimed in claim 1, wherein, the outer periphery of described bearing housing have at least one stopper part.

6, bearing support as claimed in claim 5, wherein, described stopper part and described bearing housing are one-body molded, perhaps form by the described bearing housing of heat-fused portion.

7, bearing support as claimed in claim 1, wherein, the material of described metallic base is single metal or alloy, this metallic base has a bottom and a sidepiece.

8, bearing support as claimed in claim 7, wherein, described through hole extends to described sidepiece from described bottom.

9, as claim 1 or 7 described bearing supports, wherein, described strengthening section is arranged at the bottom of described metallic base or is arranged at the periphery of described opening, and described bearing housing and described strengthening section link.

10, a kind of fan comprises:

One bearing support, it has a metallic base and a bearing housing, and the center of this metallic base has an opening, and has an at least one through hole or a strengthening section in contiguous this opening, and this bearing housing links by injection molding method and described metallic base;

One stator structure, it is arranged at the outer periphery of described bearing housing;

One rotor structure, its corresponding setting with described stator structure; And

One impeller, itself and described rotor structure link.

11, fan as claimed in claim 10, wherein, described strengthening section comprises a protuberance, a recess or their composite structure.

12, fan as claimed in claim 10, wherein, described strengthening section is T-shaped, rectangle, trapezoidal, circle or polygonal, and described through hole is rounded, trapezoidal, rectangle or polygonal.

13, fan as claimed in claim 10, wherein, the material of described bearing housing is plastics, cooling curing plastic, thermohardening type plastics or light-cured type plastics.

14, fan as claimed in claim 10, wherein, the outer periphery of described bearing housing have at least one stopper part.

15, fan as claimed in claim 14, wherein, described stopper part and described bearing housing are one-body molded, perhaps form by the described bearing housing of heat-fused portion.

16, fan as claimed in claim 10, wherein, the material of described metallic base is single metal or alloy, this metallic base has a bottom and a sidepiece.

17, fan as claimed in claim 16, wherein, described through hole extends to described sidepiece from described bottom.

18, as claim 10 or 16 described fans, wherein, described strengthening section is arranged at the bottom of described metallic base or is arranged at the periphery of described opening, and described bearing housing and the binding of this strengthening section.