CN201255136Y

CN201255136Y - Ogalloy fan

Info

Publication number: CN201255136Y
Application number: CNU200820126525XU
Authority: CN
Inventors: 顾鑫
Original assignee: 顾鑫
Current assignee: Shenzhen Speedy Science & Technology Co., Ltd.
Priority date: 2008-06-27
Filing date: 2008-06-27
Publication date: 2009-06-10
Anticipated expiration: 2018-06-27

Abstract

The utility model relates to an oil-retaining bearing fan, which comprises a motor stator pedestal and a blade rotor shaft telescoped in the intracavity of the pedestal. A motor stator unit is arranged outside the pedestal, which consists of an upper coil former, a lower coil former and a siliconized plate clamped between the upper coil former and the lower coil former. The oil-retaining bearing fan is improved in the following: a convex edge extends from the upper coil former of the motor stator group on the side of the blade rotor shaft; a loop of oil-isolating lug bosses are arranged on the upper surface of the convex edge. A loop of dust-proof lug bosses is arranged on the circumferential bottom surface of the blade rotor shaft. By comparing the utility model with the common oil-retaining bearing fan, corresponding lug bosses used for warding off oil are designed inside and outside the open shaft sleeve of the prior oil-retaining bearing fan, thus effectively isolating lubricating oil inside the shaft sleeve from the environment. In this way, on one hand, the blade rotor shaft running at high speed is prevented from being shaken out; on the other hand, dust in air is prevented from entering so that the lubricating oil is not polluted and the purity of the lubricating oil is not reduced, neither the efficiency is reduced, thus significantly prolonging the effective period of the oil-retaining bearing fan.

Description

The oil-impregnated bearing fan

[technical field]

The utility model relates to a kind of radiation fan, refers in particular to a kind of long lifetime oil-impregnated bearing radiation fan that is used for information communication products such as computer main and needs the electronic product of radiator.

[background technique]

Known radiation fan is nothing but oil-impregnated bearing fan or ball bearing fan, though the ball bearing fan has obtained general approval with, wearing and tearing good performance performance such as little little such as noise, a ball bearing fan need dispose a plurality of high-accuracy balls and can realize permanent stable running, and this type of ball is often expensive, has therefore limited popularizing of ball bearing.Though and oil-impregnated bearing is outstanding not as the ball bearing fan in the numerous characteristics performance, its technology maturation adds with low cost, therefore favored very much in the very not high middle and low-end market of many requirements, and the operating life of a oil-impregnated bearing fan how, except the Rational structure design of depending on its each several part, whether often purity that depend on lubricant oil in rotating shaft and the bearing play and content capacity more, but in the past contain the installation that bearing fan just thinks of being convenient to the flabellum rotating shaft, its stator base Intermediate shaft sleeve upper end is the opening open type, this make when the flabellum rotating shaft during in high speed rotating owing to its centrifugal force with bearing in lubricant oil throw away, in addition because opening is often bigger, lack corresponding dustproof construction all around, dust is easily invaded pollution lubricating oil, cause lubrication effect seriously to descend, and finally make excessive wear between bearing and flabellum rotating shaft and damage that working life is all shorter.

[summary of the invention]

The purpose of this utility model is to have overcome above-mentioned defective, and a kind of oil-impregnated bearing fan that is provided with the oil pocket interrupter in the axle sleeve upper end is provided.

The purpose of this utility model is achieved in that a kind of oil-impregnated bearing fan, it comprises a motor stator pedestal, the pedestal inner chamber is socketed with the flabellum rotating shaft, pedestal is provided with the motor stator group outward, the motor stator group is made up of upper and lower coil carrier and clamping silicon steel sheet therebetween, its improvements are: the last coil carrier of motor stator group is extended with the convex edge in flabellum rotating shaft one side, and the convex edge upper surface is provided with a circle oil removal projection; The bottom surface is provided with the dustproof projection of a circle around the described flabellum rotating shaft root;

The described diameter of going up coil frame end oil removal projection is slightly less than the diameter of the dustproof projection of flabellum end;

The described slightly larger in diameter of coil frame end oil removal projection that goes up is in the diameter of the dustproof projection of flabellum end;

The spacing of described oil removal projection upper surface and flabellum rotating shaft root bottom surface is 0.3-1mm;

The spacing on described dustproof protruding bottom surface and surface, last coil carrier convex edge is 0.3-1mm;

The described spacing that goes up the dustproof projection in coil carrier convex edge and flabellum rotating shaft root bottom surface is 0.3-2mm.

Than common oil-impregnated bearing fan, the beneficial effects of the utility model are to have designed the projection that is applied to the lattice retaining mutually inside and outside the axle sleeve for open by design in original oil-impregnated bearing fan, thereby the lubricant oil in the axle sleeve well is isolated from the outside comes, prevent that on the one hand it from taking place in the phenomenon that flabellum rotating shaft high speed rotating is thrown out of, also reduced entering of dust in the air on the other hand, make its interior lubricant oil can not prolong the running timeliness of this type of oil-impregnated bearing fan greatly because of contaminated purity reduces usefulness.

[description of drawings]

Below in conjunction with accompanying drawing in detail concrete structure of the present utility model is described in detail

Fig. 1 is a cross-sectional view 1 of the present utility model.

Fig. 2 is a cross-sectional view 2 of the present utility model.

[embodiment]

Below in conjunction with accompanying drawing the utility model specific embodiment is described in detail.

The utility model relates to a kind of oil-impregnated bearing fan, and referring to Fig. 1, it comprises motor stator pedestal 1, motor stator group 2, flabellum 3, wherein motor stator pedestal 1 center is provided with an axle sleeve 101, axle sleeve 101 inner chambers then with bearing 4 sockets, the rotating shaft 301 at flabellum 3 centers is set in the bearing 4; Axle sleeve 101 outer side surfaces are provided with motor stator group 2, motor stator group 2 is by last coil carrier 201, lower coil frame 203 and clamping silicon steel sheet 202 is therebetween formed, wherein go up coil carrier 201 and be extended with convex edge 204 in flabellum 3 rotating shafts 301 1 sides, convex edge 204 upper surfaces are provided with a circle oil removal projection 205, corresponding, the bottom surface also is provided with the dustproof projection 302 of a circle around flabellum 3 rotating shafts 301 roots, be to guarantee the convenience of effective isolation effect and installation, need remain between 0.3-2mm with dustproof protruding 302 spacing a with an oil removal projection 205.

Be the structural representation under the specific embodiment as Fig. 2, the diameter of one circle oil removal projection 205 of last coil carrier 201 convex edges 204 upper surfaces of the group of motor stator shown in the figure 2 is slightly less than flabellum 3 rotating shafts 301 roots dustproof protruding 302 diameters of a circle of bottom surface all around, and the common oil removal projection 205 and the spacing b of flabellum 3 rotating shafts 301 root bottom surfaces get about 0.3-1mm; Spacing c circle on the bottom surface of the dustproof projection 302 of one of bottom surface circle and 204 surfaces, last coil carrier 201 convex edges is between 0.3-1mm around flabellum 3 rotating shafts 301 roots; The spacing on dustproof protruding 302 tops, bottom surface is at least 0.3mm around last coil carrier 201 convex edges 204 and flabellum 3 rotating shafts 301 roots, is at most 2mm, to guarantee good dust-proof and anti-leakage of oil effect.

It is to be noted; of the present utility modelly be not limited to above-mentioned mode of execution; the diameter of dustproof projection 302 was enclosed in bottom surface one around for example the diameter of the circle of one on coil carrier 201 convex edges 204 oil removal projection 205 can be set to be slightly larger than flabellum 3 rotating shafts 301 roots on the motor stator group 2; any simple modification, equivalent variations and modification that any those skilled in the art do the foregoing description in based on technical solutions of the utility model all belong in the protection domain of the present utility model.

Claims

1, a kind of oil-impregnated bearing fan, it comprises a motor stator pedestal, the pedestal inner chamber is socketed with the flabellum rotating shaft, pedestal is provided with the motor stator group outward, the motor stator group is made up of upper and lower coil carrier and clamping silicon steel sheet therebetween, it is characterized in that: the last coil carrier of motor stator group is extended with the convex edge in flabellum rotating shaft one side, and the convex edge upper surface is provided with a circle oil removal projection; The bottom surface is provided with the dustproof projection of a circle around the described flabellum rotating shaft root.

2, oil-impregnated bearing fan as claimed in claim 1 is characterized in that: the described diameter of going up coil frame end oil removal projection is slightly less than the diameter of the dustproof projection of flabellum end.

3, oil-impregnated bearing fan as claimed in claim 1 is characterized in that: the described slightly larger in diameter of coil frame end oil removal projection that goes up is in the diameter of the dustproof projection of flabellum end.

4, as claim 2 or 3 described oil-impregnated bearing fans, it is characterized in that: the spacing of described oil removal projection upper surface and flabellum rotating shaft root bottom surface is 0.3-1mm.

5, as claim 2 or 3 described oil-impregnated bearing fans, it is characterized in that: the spacing on described dustproof protruding bottom surface and surface, last coil carrier convex edge is 0.3-1mm.

6, as claim 2 or 3 described oil-impregnated bearing fans, it is characterized in that: the described spacing that goes up the dustproof projection in coil carrier convex edge and flabellum rotating shaft root bottom surface is 0.3-2mm.