CN2276684Y

CN2276684Y - Brushless direct current fan bearing lubricating device

Info

Publication number: CN2276684Y
Application number: CN 96219374
Authority: CN
Inventors: 谢新茂
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-09-28
Filing date: 1996-09-28
Publication date: 1998-03-18
Anticipated expiration: 2006-09-28

Abstract

The utility model relates to a bearing lubricating device of a brushless direct current fan. The center of a bearing with lubricating oil is provided with a pivoting hole, an axle center is contained in the bearing by the pivoting hole, and a pivoting base of a fan shell is provided with a middle hole by which the bearing can be positioned. The utility model is characterized in that the pivoting hole of the bearing is provided with an oil storage tank, so that the oil storage tank, the bearing and the axle center form a lubricating circulation system. The friction surface of the axle center and the bearing can be reduced, and the service life of the products can be increased. The periphery of the middle hole of the pivoting base is provided with a plurality of flutes. When the lubricating oil is released from the circumference of the upper end under the centrifugal action, an oil keeping zone is formed by the flutes, and therefore, an oil supply system to the self-lubricating bearing is formed to increase the oil storage rate of the bearing.

Description

The brushless DC fan bearing-lubricating device

The utility model relates to a kind of brushless DC fan bearing-lubricating device.

Brushless DC fan is a common cooling heat radiator, it mainly is to be installed in electronics or the electrical machine element, derive so as to the heat temperature that electronics or electrical machine element are produced in the running start, and reach the heat radiation cooling purpose, make electronics or electrical machine element impaired to avoid Yin Gaowen.

And DC fan is that electric energy is converted into magnetic energy, and make the fan start rotation that is installed on the axle center by magnetic energy, and the axle center of high speed rotating generally all uses a bearing to be installed in the pin joint seat of blower-casting, and for reduce and the axle center between frictional resistance, promptly the someone adopts the self-lubricating bearing that includes lubricating oil, wherein, self-lubricating bearing is a columned type body, its centre is provided with a pivoted hole, with the axle center socket of fan base, then be provided with a mesopore in the pin joint seat of blower-casting, this mesopore can be for the installing self-lubricating bearing, when fan energising rotation start, the axle center is to rotate in the pivoted hole of self-lubricating bearing, because self-lubricating bearing itself includes lubricating oil, and utilize the lubricated of lubricating oil, friction between minimizing and axle center, however the lubrication system of this kenel still has following shortcoming on reality is used:

(1) lubricating oil can't be recycling: this fan structure disengages the lubricating oil in the self-lubricating bearing because the axle center rotates at high speed, for lubricated, yet for lubricating oil, only disengages and can't recycling, and the oil conserving rate of lubricating oil is reduced.

(3) useful life is short: the self-lubricating bearing in this fan structure is directly to contact with the axle center friction with pivoted hole, though the lubricated of lubricating oil arranged, because contact area is big, and lubricating oil makes that always in loss the useful life of axle center and self-lubricating bearing is shorter.

And this creator is because the shortcoming of conventional fan lubricating arrangement, in addition active research improvement, and in the hope of dealer or user one can be provided more good quality production, then design the utility model brushless DC fan lubricating arrangement, to reach following purpose.

The purpose of this utility model is to provide a kind of brushless DC fan bearing-lubricating device, can reduce the lubrication oil consumption of self-lubricating bearing, improves oil conserving rate, and reduces the attrition surface between axle center and bearing, and then increases the useful life of axle center and bearing.

The technical solution of the utility model is to provide a kind of brushless DC fan bearing-lubricating device, the wherein inner bearing that contains lubricating oil, its centre forms a pivoted hole, this pivoted hole holds the axle center in bearing, and the pin joint seat of blower-casting is provided with a mesopore for the bearing location, it is characterized in that: this bearing is provided with an oil storage tank in the centre of its pivoted hole, and the mesopore peritreme place of the pin joint seat of this blower-casting is provided with several grooves.

Described brushless DC fan bearing-lubricating device is characterized in that: the set groove of the mesopore peripheral region of this blower-casting is the form of arc.

Described brushless DC fan bearing-lubricating device is characterized in that: oil jacket is protected in installing one on this axle center, is to be connected on the axle center with the borehole jack that its central place is provided with and protect oil jacket, and protects the upper end that oil jacket is positioned at bearing.

Described brushless DC fan bearing-lubricating device is characterized in that: the section of this guarantor's oil jacket forms an arcuate flange.

Through doing one relatively with the lubricating arrangement of conventional fan, improvement design of the present utility model as can be known has following advantage:

(1) has lubricating circulatory system: because the high speed rotating in axle center, make the lubricating oil contained in self-lubricating bearing to around disengage, for lubricated, and the utility model is provided with an oil storage tank in the pivoted hole of self-lubricating bearing, this oil storage tank can be kept somewhere lubricating oil, and the lubricating oil recovery that can supply self-lubricating bearing again, and form a lubricating circulatory system for self-lubricating bearing and axle center.

(2) can improve the oil conserving rate of self-lubricating bearing: because the centrifugal action the during rotation of axle center, lubricating oil in the self-lubricating bearing disengages all around from the upper end, and the utility model is provided with several grooves at the mesopore peripheral region of the pin joint seat of housing, and the setting of this groove can form a Bao You district.And the recycling that makes lubricating oil supply self-lubricating bearing again through groove, self-lubricating bearing is formed an oil supply system, the oil conserving rate of self-lubricating bearing is improved.

(3) can increase useful life: the utility model forms an oil storage tank in the pivoted hole of self-lubricating bearing, because the setting of this oil storage tank can make the attrition surface between axle center and self-lubricating bearing reduce, and can increase the useful life of axle center and self-lubricating bearing.

Further specify specific structural features of the present utility model and purpose below in conjunction with accompanying drawing.

Brief Description Of Drawings:

Fig. 1 is a combination generalized section of the present utility model.

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

Fig. 3 is a user mode schematic diagram of the present utility model.

Fig. 4 is that of the present utility model another implemented view.

About structure of the present utility model, at first please join Fig. 1, shown in 2, the utility model mainly is the improvement design of self-lubricating bearing 10 and blower-casting 20, wherein, the porous products that self-lubricating bearing 10 forms for the copper alloy sintering, and its inside comprises a large amount of lubricating oil, when self-lubricating bearing 10 surfaces are subjected to rubbing, can disengage the inner lubricating oil of being contained as lubricated usefulness, and self-lubricating bearing 10 its centre form a pivoted hole 11, so that with axle center 30 windings that are installed in the flabellum seat 31, and this pivoted hole 11 is provided with an oil storage tank 12 at middle appropriate location, make 10 of axle center 30 and self-lubricating bearings form a Bao You district.

And blower-casting 10, it is to form a mesopore that runs through 22 in the pin joint seat 21 of housing 10, this mesopore 22 can be for installing self-lubricating bearing 10, the bottom of mesopore 22 is provided with a buckling groove 25 simultaneously, for installing one bottom 24, make the bottom of pin joint seat 21 form the state that seals, and described mesopore 22 is provided with the groove 23 of several arcuations at its peritreme place, make 10 of pin joint seat 21 and self-lubricating bearings form several Bao You districts.

As for user mode of the present utility model, please referring to shown in Figure 3, when starting fan, coil electricity produces magnetic effect, make axle center 30 and the 31 rotation starts of flabellum seat, and owing in the pivoted hole 11 of self-lubricating bearing 31, rotating and form friction and produce suction in axle center 30, make self-lubricating bearing 10 disengage lubricating oil, and utilize lubricating oil that the lubricated of axle center 30 and self-lubricating bearing 10 rubbed to reduce, utilize the oil storage tank 12 in the self-lubricating bearing 10 to be provided with simultaneously, the friction area of 10 on axle center 30 and bearing is reduced, and can in self-lubricating bearing 10, cause a storage area, form an optimum lubricating circulatory system for self-lubricating bearing 10 and axle center 30, in addition at mesopore 22 joints of self-lubricating bearing 10 with housing 20 pin joint seats 21, it is because of centrifugal action, make in the self-lubricating bearing 10 lubricating oil to around ooze out, and because mesopore 22 peripheral regions of pin joint seat 21 are provided with several grooves 23, the setting of this groove 23 can be kept somewhere lubricating oil, and, the oil conserving rate of self-lubricating bearing 10 is improved for self-lubricating bearing 10 formation one oil supply system.

Please referring again to shown in Figure 4, the utility model also can 60 places installing one be protected oil jacket 70 in the axle center, to reduce the excessive chance of lubricating oil, wherein, protecting oil jacket 70 is the goods of an elastomeric material, and its centre is provided with a hole 71, and the section of guarantor's oil jacket 70 forms an arcuate flange 72, and protect oil jacket 70 is to be installed on the axle center, and is positioned at the upper end of self-lubricating bearing 40; When starting fan, axle center 60 and flabellum seat rotation start, 60 in self-lubricating bearing 40 and axle center are also sayed with above-mentioned institute, form a lubricating circulatory system in the oil storage tank of self-lubricating bearing 40; And at mesopore 51 joints of self-lubricating bearing 40 with pin joint seat 50, since self-lubricating bearing 40 because of centrifugal action make in the self-lubricating bearing lubricating oil to around overflow, wherein lubricating oil also may be overflowed by the upper end, this moment is owing to protect the obstruct of oil jacket 70, and the arcuate flange 72 of protecting oil jacket is guided, lubricating oil is refluxed again, reducing the excessive chance of lubricating oil, and form a circulation oil supply system in inside.

Claims

1 one kinds of brushless DC fan bearing-lubricating devices, the wherein inner bearing that contains lubricating oil, its centre forms a pivoted hole, and this pivoted hole holds the axle center in bearing, and the pin joint seat of blower-casting is provided with a mesopore for the bearing location, it is characterized in that:

This bearing is provided with an oil storage tank in the centre of its pivoted hole,

The mesopore peritreme place of the pin joint seat of this blower-casting is provided with several grooves.

2 brushless DC fan bearing-lubricating devices according to claim 1 is characterized in that: the set groove of the mesopore peripheral region of this blower-casting is the form of arc.

3 brushless DC fan bearing-lubricating devices according to claim 1 is characterized in that: oil jacket is protected in installing one on this axle center, is to be connected on the axle center with the borehole jack that its central place is provided with and protect oil jacket, and protects the upper end that oil jacket is positioned at bearing.

4 brushless DC fan bearing-lubricating devices according to claim 3, it is characterized in that: the section of this guarantor's oil jacket forms an arcuate flange.