CN200958484Y - Magnetic-suction bearing structure improvement of radiating fan - Google Patents

Abstract

The utility model discloses an improved bearing structure for radiator fan which comprises a stator, a rotor and a fan vane arranged in the rotor; wherein the rotor is articulated on the bearing axial pore arranged on an axial pipe at the center of the stator; the bottom wall of the axial pipe is arranged with at least a magnetizer; a magnetic ring is arranged between the magnetizer and the bottom of the bearing; the bottom end of the axle centre is articulated on and set against the top surface of the magnetizer by passing the hole of the magnetic ring; the periphery of the bottom of the bearing forms a concaved ring edge, which is inward contracted for a certain length upward; and a magnetic ring is formed in combination with the assembly modality of the concaved ring edge. On the one hand, above creative and unique design can reduce the height of the bearing and the axial pipe so as to facilitate the lightened design of the radiator fan; on the other hand, on the precondition that the axial pipe remains unchanged, the area of the supporting axle centre of the bearing can be increased, further attaining the practical progress of improving the stability of rotation of the axle centre.

Description

The magnetic-type bearing structure improvement of radiation fan

Technical field

The utility model relates to a kind of radiation fan, is meant the innovation kenel design of magnetic-type bearing portion structure especially.

Background technique

Radiation fan generally comprises a stator and a rotor and is located at this epitrochanterian flabellum, and wherein this rotor is the bearing portion that assembles in stator central authorities central siphon by an axle center pivot group; Because during this rotor rotation, the rotation of flabellum can produce the flow-disturbing effect, and air-flow also can produce the reaction force of axial drawing relatively to this flabellum together with rotor, have axial oscillation, wild effect generation when so causing rotor axis to rotate, and also cause the increase of noise in operating amount; In view of this, reinforcement positioning design when person skilled imports the rotor axis running in the cooling fan structure of subsequent development, wherein, the existing structure kenel more relevant with the utility model as shown in Figure 1, it mainly is to establish a magnet 03 in the central siphon 02 bottom group of stator 01, utilize the end face of this magnet 03 to lean on for rotor 04 axle center 05 bottom pivot, produce axial magnetic suction simultaneously to stablize rotor 04, establish the positioning seat 06 that without exception is ㄩ type section in the central siphon 02 bottom group of stator 01 in addition, be positioned at wherein for 03 group of setting of magnet, ring side 07 top of this positioning seat 06 also can be for the bearing 08 bottom breasting that assembles in the central siphon 02; This kind existing structure finds to exist following problem in actual use experience:

Because the ring side 07 of this positioning seat 06 can occupy 02 1 sections height distance of central siphon, therefore, under the immovable situation of central siphon 02 whole height, certainly will be with reduction bearing 08 height originally, yet, the support that stability when rotate in this rotor 04 axle center 05 has exhausted most factor to be dependent on bearing 08 leans on reaches, in case the axial depth of this bearing 08 reduction, can provide rotor 04 axle center 05 to support the degree of stability that leans on obviously will reduce relatively, and then influence the stationarity that rotor 04 operates, cause the phenomenon of attending to one thing and lose sight of another; And if the lengthening bearing 08 axial specification, with this existing structure kenel, this central siphon 02 height must strengthen simultaneously, like this then the problem that causes integral heat sink fan height volume to increase, this obviously runs in the opposite direction and does not meet preferable industry applications for present radiation fan is tending towards lightening shaping-orientation and demand gradually.

So, at the existing problem of above-mentioned existing structure, how to develop a kind of innovation structure that has more desirable practicability, be to use the ardent hope of Consumer institute, also be target and the direction that person skilled need make great efforts to research and develop breakthrough.

The model utility content

For overcoming above-mentioned defective, the utility model main purpose is to provide a kind of magnetic-type bearing structure improvement of radiation fan, the positioning seat of establishing magnet because of group at the magnetic-type bearing of existing radiation fan causes the axial depth reduction, so that influence rotor running stationarity, but if the lengthening bearing specification then causes integral heat sink fan height volume to increase and is unfavorable for that the problem of lightening design is improved breakthrough.

For achieving the above object, the magnetic-type bearing structure of the utility model radiation fan is improved, and described radiation fan comprises a stator, a rotor and is located at this epitrochanterian flabellum; Wherein this rotor by an axle center pivot group in the bearing axis hole that stator central authorities one central siphon assembles, group is provided with at least one magnet case on the diapire of this central siphon, organize on this magnet case and between the bottom of bearing and be provided with a magnetic rings, the annular distance pivot that magnetic rings is passed in the bottom, axle center is against the magnet case end face; The bottom periphery of this bearing is formed with a recessed ring edge that allows, and this is recessed to allow the ring edge certain-length that contracts in up; Forming magnetic rings is matched with this recessed ring edge that allows and forms assembly kenel in the space.

Above-mentioned innovation unique design, from an angle, can reduce the height of this bearing and central siphon and be more conducive to the lightening design of radiation fan, from another angle, under the constant prerequisite of central siphon height, then can increase the area in this bearings breasting axle center, and then reach the practical improvement that promotes the axle center rotational stabilization.

Description of drawings

Fig. 1 is the assembled sectional view of existing structure.

Fig. 2 is the combination stereogram of the utility model preferred embodiment.

Fig. 3 is the exploded perspective view of the utility model preferred embodiment.

Fig. 4 is the local enlarged diagram of Fig. 3.

Fig. 5 is another kenel schematic representation of wear-resisting position of the present utility model kenel.

Embodiment

See also Fig. 2, Fig. 3, shown in Figure 4, the preferred embodiment of the magnetic-type bearing structure improvement of the utility model radiation fan, these embodiments only for the usefulness of explanation, are not subjected to the restriction of this structure in patent application; Described radiation fan A comprises a stator 10, a rotor 20 and is located at flabellum 30 on this rotor 20; Wherein, this rotor 20 be by an axle center 21 pivot groups in bearing 40 axis holes 41 that stator 10 central central siphons 11 assemble, group is provided with at least one magnet case 50 on the diapire 110 of this central siphon 11, organize again on this magnet case 50 and between the bottom of bearing 40 and be provided with a magnetic rings 60, be against on the end face of magnet case 50 so that annular distance 601 pivots of this magnetic rings 60 are passed in 21 bottoms 210, axle center; Improvement of the present utility model is: bottom 42 peripheries of this bearing 40 are formed with a recessed ring edge 43 that allows, and this is recessed to allow the ring edge 43 predetermined length that contracts in up, constitute this magnetic rings 60 and just can be matched with this recessed ring edge 43 that allows and form assembly kenel in the space; Design with this, can be absorbed on the one hand in the annular distance 601 of magnetic rings 60 and can reduce the height of this bearing 40 and central siphon 11 because of the bottom 42 of bearing 40, on the other hand, if under the constant prerequisite of bearing 40 former height, then can utilize the bottom 42 of this bearing 40 to be absorbed in the structure kenel in magnetic rings 60 annular distances 601 and to increase length, the area that this bearing 40 supports breasting axle center 21.

Wherein, can have additional a wearing layer 70 between these magnet case 50 end faces and 21 bottoms, axle center; Wherein this wearing layer 70 can be a pad kenel of making respectively (as adopting ceramic plate) as shown in Figure 3, Figure 4; Perhaps wearing layer 70B as shown in Figure 5, its spraying of serving as reasons, electricity, means one such as electroforming is incorporated into the lamellar structure kenel on these magnet case 50 end faces.

Above-mentioned structure, composition design, the combination of relevant its main member of the utility model radiation fan A, see also shown in Figure 3, organize this magnet case 50, wearing layer 70, magnetic rings 60 on the diapire 110 of going into central siphon 11 in regular turn earlier, then group is gone into bearing 40 again, the recessed ring edge 43 that allows of these bearing 40 bottoms 42 is protruded in the annular distance 601 of magnetic rings 60, then can carry out the combination action of rotor 20 axle center 21 and bearing 40 axis holes 41, this axle center 21 and the axis hole 41 of bearing 40 are reached and can be utilized after the combination predetermined locating piece 80 (buckleing as ring-like seat, C type) in addition spacing.

The utility model beneficial effect is as follows:

1, the utility model mainly is to utilize these bearing 40 bottoms 42 peripheries form a recessed innovation structure of ring edge 43 that allows to design, to be absorbed in because of the bottom 42 of bearing 40 in the annular distance 601 of magnetic rings 60 and make these bearing 40 top height descend (the corresponding recessed degree of depth that allows in the annular distance 601 that ring edge 43 stretches into magnetic rings 60), so the central siphon 11 of stator 10 highly also can decrease, and then reach the advantage that makes radiation fan integral body more lightening, to adapt to the Design trend of present light and handyization of product.

2, from another point of view, if make bearing 40 height of the present utility model highly identical with the bearing 08 of existing structure shown in Figure 1, so, the utility model bearing 40 can be protruded into the kenel of predetermined length in the annular distance 601 of magnetic rings 60 down by its bottom 42, can under the prerequisite that does not increase central siphon 11 total lengths, increase length and area that this bearing 40 supports breasting axle center 21, can make the rotation status in axle center 21 more steady with this, and then reach the practical improvement that promotes axle center 21 rotational stabilizations.

The foregoing description is described to be in order to specify the utility model, though describe by specific term in the literary composition, can not limit claim of the present utility model with this; The personage who is familiar with this technical field can change and revise it after understand spirit of the present utility model and principle and reach equivalent purpose, and these changes and modification all should be covered by the claim scope and define in the category.

Claims (4)

1, a kind of magnetic-type bearing structure improvement of radiation fan, described radiation fan comprises a stator, a rotor and is located at this epitrochanterian flabellum; Wherein this rotor by an axle center pivot group in the bearing axis hole that stator central authorities one central siphon assembles, group is provided with at least one magnet case on the diapire of this central siphon, organize on this magnet case and between the bottom of bearing and be provided with a magnetic rings, the annular distance pivot that magnetic rings is passed in the bottom, axle center is against the magnet case end face; It is characterized in that: the bottom periphery of this bearing is formed with a recessed ring edge that allows, and this is recessed to allow the ring edge certain-length that contracts in up; Forming magnetic rings is matched with this recessed ring edge that allows and forms assembly kenel in the space.

2, according to the magnetic-type bearing structure improvement of the described radiation fan of claim 1, it is characterized in that: have additional a wearing layer between this magnet case end face and the bottom, axle center.

3, according to the magnetic-type bearing structure improvement of the described radiation fan of claim 2, it is characterized in that: this wearing layer is a pad of making respectively.

4, according to the magnetic-type bearing structure improvement of the described radiation fan of claim 2, it is characterized in that: the serve as reasons spraying, electric, electroforming means one of this wearing layer is incorporated into the stratiform structure kenel on the magnet case end face.

Images