CN101413510A

CN101413510A - Improved fan bearing set structure

Info

Publication number: CN101413510A
Application number: CNA2007101640931A
Authority: CN
Inventors: 陈乾昌
Original assignee: AIBIFU HEAT TRANSFER Co Ltd
Current assignee: AIBIFU HEAT TRANSFER Co Ltd
Priority date: 2007-10-19
Filing date: 2007-10-19
Publication date: 2009-04-22

Abstract

The invention discloses an improved structure of a fan bearing pack. The fan bearing pack is arranged between a shaft tube of a base of a fan and an impeller and comprises a fixing block and a spindle, wherein the fixing block is provided with a cone-shaped groove in the middle, and the spindle is inserted into the shaft tube. One end of the spindle is fixedly arranged on the impeller and the other end of the spindle is formed into a cone-shaped end which can pivot in the groove of the fixing bloc. The spindle is provided with a ball bearing, a lower gasket, a spring clamped and supported between the ball bearing and the lower gasket. The fan bearing pack has advantages of low manufacture cost, stable rotation, reduction of vibration, noise and shearing force applied on the spindle and improved service life.

Description

Improved fan bearing set structure

Technical field

The present invention relates to a kind of improved fan bearing set structure.

Background technique

The design of the fan known to general mainly includes a pedestal, one impeller and a bearing pack, the projection of pedestal central authorities has a central siphon, its outer ring is provided with a circuit board and a stator, this stator has several magnetic pole strengths and is arranged with coil, its two ends and circuit board are electrically connected, impeller includes a sleeve pipe and several and is located on flabellum on the outside of sleeve face, the sleeve pipe inner side surface is equipped with permanent magnet, and magnetic pole strength corresponding to stator, borrow the circuit board energising, make the coil of stator make this magnetic pole strength produce magnetic, and then utilize the effect that magnetic is inhaled mutually and repelled each other between magnetic pole strength and permanent magnet, and drives impeller is rotated with respect to pedestal, wherein, bearing pack is located at the sleeve pipe centre of the central siphon and the impeller of pedestal, so that can relatively rotate swimmingly between the two.

Referring to shown in Figure 4, it is the fan spindle bearing group 50 of a prior art, it is located between a pedestal 30 and the impeller 40, these pedestal 30 central projections have a central siphon 31, wherein, this bearing pack 50 mainly includes a fixed block 51, one axle 52, two ball bearings 53, one pad 54 and a spring 55, this fixed block 51 is fixedly arranged on the opening of central siphon 31 bottoms, the two ends of this axle 52 are fixedly arranged on fixed block 51 and impeller 40 central authorities respectively, these two ball bearings, 53 spacer rings are located on the axle 52 and are positioned among the central siphon 31, this pad 54 is located on axle 52 1 ends and between a ball bearing 53 and fixed block 51, this spring 55 is located on the other end of axle 52 and only supports between another ball bearing 53 and impeller 40, the inner ring body of ejection ball bearing 53 whereby, avoid its inner steel ball between inner ring body and outer ring body, to beat arbitrarily, and this kind is provided with the bearing pack 50 of two ball bearings 53, though the active force of whole axle 52 is evenly distributed on this two ball bearing 53, to reduce the stressed of inner steel ball, and increase its working life, but also because so, make its fabricating cost height, and two ball bearings 53 also make its axle center not on same straight line because of the error of making easily, cause axle 52 to produce vibration, in addition, though the power of spring 55 ejection ball bearings 53 inner ring bodies and the meeting drawing impeller 40 of the suction between magnetic pole strength and permanent magnet and axle 52 move towards pedestal 30 directions, but the buoyancy that the power of spring 55 ejection impellers 40 and impeller 40 produced when rotating again can drawing impeller 40 and axle 52 towards moving away from pedestal 30 directions, that is the inner ring body of ball bearing 53 is continuous and its outer ring body relatively moves, cause ball to be beated, even make a noise in its inside, cause wearing and tearing and make axle 52 damage because of bearing shearing.

Further referring to shown in Figure 5, because the easy not shortcoming on same straight line in the axle center of aforesaid two ball bearings 53, so just designing another kind, someone replaces wherein another bearing pack 60 of a ball bearing 53 with an axle sleeve 61, expectation is except the problem that can solve noise and vibration, on the other hand, because of the price of axle sleeve 61 cheap than ball bearing 53, and working life is also long than it, hope can solve whereby to be provided with two ball bearings 53 and to cause and cost an arm and a leg, and on same straight line, do not produce vibration because of its axle center, noise and act on the shortcoming of the shearing of axle 52, increase the working life of this bearing pack 60 simultaneously, just with regard in fact, after ball bearing 53 breaks down, though it is bad that axle sleeve 61 does not have, but the ball bearing 53 that also can't change separately wherein uses with continuation, do not increase so not only working life, can cause waste on the contrary, and only depend on the suction between magnetic pole strength and permanent magnet still can't resist the buoyancy that is produced when impeller 40 rotates, so, axle 52, ball in impeller 40 and the ball bearing 53 still can't stable rotation, and axle 52 is located at an end of fixed block 51 and still can damages because of shearing, so the fan spindle bearing group of prior art still has the further part of improving.

Summary of the invention

Technical problem underlying to be solved by this invention is, overcome the above-mentioned defective that prior art exists, and provide a kind of improved fan bearing set structure, not only can reduce fabricating cost, and can reduce the shearing that acts on the axle, increase the working life of this fan, but make the ball stable rotation in the ball bearing, prevent to produce noise and wearing and tearing.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of improved fan bearing set structure, it is to be installed between the pedestal and impeller of a fan, it is characterized in that, it includes a fixed block, an axle, a ball bearing and a spring, wherein: the fixed block lid is established the opening of the central siphon bottom of being fixed in pedestal central authorities, and forms a conical socket in the central indent of its inner side surface; Axle axially is arranged in the central siphon by opening, and the one end is fixedly arranged on impeller central authorities, and the other end is shaped to a tapered end, and the pivotable groove center of being located at fixed block of this tapered end in addition is equipped with in the form of a ring a lower levelling plate near the tapered end place on axle; Ball-bearing ring is established and is fixed on the axle, and is located among the central siphon; Spring shackle is located on the axle and is only supportted between ball bearing and lower levelling plate.

Aforesaid improved fan bearing set structure wherein further includes a positioning ring, and this positioning ring ring is established the internal face that is fixed in central siphon, and is resisted against on ball bearing and the fixed block opposing end faces.

Aforesaid improved fan bearing set structure, an enterprising step of its central shaft is equipped with in the form of a ring a Upper gasket, and this Upper gasket is located between ball bearing and the impeller.

Aforesaid improved fan bearing set structure, the angle of the inclined-plane of the tapered end of its central shaft and axle centreline space is less than the angle of inclined-plane and its centreline space of groove.

Aforesaid improved fan bearing set structure is formed with an annular groove near the tapered end place on its central shaft, and aforementioned lower levelling plate is sheathed to be positioned in this annular groove.

The invention has the advantages that, it only is provided with a ball bearing, it not only can reduce fabricating cost, and can reduce the shearing that acts on the axle, increase the working life of this fan, in addition, design has conical socket and the tapered end that matches between fixed block and axle, borrow the ejection of spring one end and make that tapered end can be stable in the rotation of groove central authorities, effectively reduce vibration, and the buoyancy that produces when borrowing the power of the other end ejection ball bearing inner ring body of spring to cooperate wheel rotation, with the suction between opposing magnetic pole strength and permanent magnet, effectively avoid axle axially to move around, but make the ball stable rotation in the ball bearing, prevent to produce noise and wearing and tearing along it.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is the three-dimensional appearance schematic representation of a fan.

Fig. 2 is the side cutaway view that bearing pack of the present invention is located at fan inside.

Fig. 3 is the perspective exploded view that bearing pack of the present invention is located at fan inside.

Fig. 4 is the side cutaway view of the fan spindle bearing group of a prior art.

Fig. 5 is the side cutaway view of the fan spindle bearing group of another prior art.

The number in the figure explanation:

10 bearing pack, 11 fixed blocks

111 grooves, 12 positioning rings

13 axles, 131 tapered ends

132 Upper gaskets, 133 lower levelling plates

14 ball bearings, 15 springs

20 fans, 21 pedestals

211 central siphons, 22 impellers

30 pedestals, 31 central siphons

40 impellers, 50 bearing pack

51 fixed blocks, 52 axles

53 ball bearings, 54 pads

55 springs, 60 bearing pack

61 axle sleeves

Embodiment

Referring to Figure 1 and Figure 2, the present invention applies on the fan 20, this fan 20 includes a pedestal 21 and an impeller 22, pedestal 21 central projections have a central siphon 211, two ends in central siphon 211 are provided with opening, and wherein, the improved fan spindle bearing group 10 of the present invention is to be installed between the central siphon 211 and impeller 22 of pedestal 21, it includes a fixed block 11, a positioning ring 12, an axle 13, a ball bearing 14 and a spring 15, wherein:

Fixed block 11 is a wear-resistant pad, and its lid is established the opening that is fixed in central siphon 211 bottoms, and forms a conical socket 111 in the central indent of its inner side surface;

Positioning ring 12 rings are established the internal face that is fixed in central siphon 211;

Axle 13 axially is arranged in the central siphon 211 by opening, the one end is fixedly arranged on impeller 22 central authorities, the other end is shaped to a tapered end 131, these tapered end 131 pivotable groove 111 centers of being located at fixed block 11, and the angle of its inclined-plane and axle 13 centreline spaces is less than the angle of inclined-plane and its centreline space of groove 111, connect the friction that the place produces to reduce

axle

13 and 11 large size of fixed block, and avoid 13 of fixed block 11 and axles to produce shearing action, in addition on axle 13 and near an end place of impeller 22, be equipped with in the form of a ring a Upper gasket 132, in being formed with an annular groove near tapered end 131 places, and with in the form of a ring lower levelling plate 133 sheathed being positioned wherein;

Ball bearing 14 ring is established and is fixed on the axle 13, and is located among the central siphon 211 and between Upper gasket 132 and positioning ring 12, further fixes the position of this ball bearing 14 whereby;

Spring 15 is located on the axle 13 and only supports between ball bearing 14 and lower levelling plate 133.

When fan 20 energising and utilize magnetic to inhale mutually and the effect that repels each other and drives impeller 22 when rotating with respect to pedestal 21, this bearing pack 10 borrows spring 15 ejection lower levelling plates 133 and ball bearing 14, one side is rotated groove 111 centers in fixed block 11 that the tapered end 131 of axle 13 can be stable, but the also inner ring body of ejection ball bearing 14 on the other hand, the buoyancy that produces when further cooperating impeller 22 to rotate, with the suction between opposing magnetic pole strength and permanent magnet, avoid its inner steel ball to beat arbitrarily, make these bearing pack 10 concentricitys good, slow-roll stabilization, and can not produce vibration and noise.

Claims

1. improved fan bearing set structure, it is to be installed between the pedestal and impeller of a fan, it is characterized in that, it includes a fixed block, an axle, a ball bearing and a spring, wherein:

The fixed block lid is established the opening of the central siphon bottom of being fixed in pedestal central authorities, and forms a conical socket in the central indent of its inner side surface;

Axle axially is arranged in the central siphon by opening, and the one end is fixedly arranged on impeller central authorities, and the other end is shaped to a tapered end, and the pivotable groove center of being located at fixed block of this tapered end in addition is equipped with in the form of a ring a lower levelling plate near the tapered end place on axle;

Ball-bearing ring is established and is fixed on the axle, and is located among the central siphon;

Spring shackle is located on the axle and is only supportted between ball bearing and lower levelling plate.

2. improved fan bearing set structure according to claim 1 is characterized in that further including a positioning ring, and this positioning ring ring is established the internal face that is fixed in central siphon, and is resisted against on ball bearing and the fixed block opposing end faces.

3. improved fan bearing set structure according to claim 2 is characterized in that further being equipped with on the described axle in the form of a ring a Upper gasket, and this Upper gasket is located between ball bearing and the impeller.

4. according to each described improved fan bearing set structure in the claim 1 to 3, it is characterized in that the angle of the angle of the inclined-plane of tapered end of described axle and axle centreline space less than inclined-plane and its centreline space of groove.

5. improved fan bearing set structure according to claim 4 is characterized in that being formed with an annular groove near the tapered end place on the described axle, and aforementioned lower levelling plate is sheathed to be positioned in this annular groove.