CN101000060A

CN101000060A - Fan motor

Info

Publication number: CN101000060A
Application number: CN 200610003628
Authority: CN
Inventors: 吴子豪
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-09
Filing date: 2006-01-09
Publication date: 2007-07-18

Abstract

The fan motor includes one casing, one stator inside the casing and one rotor assembled to match the stator. The casing includes a housing, and one bearing inside the housing with shaft hole in its one end. The stator is muff coupled to the bearing, and the rotor includes one axle inside the shaft hole. The axle is shorter than the axial length of the rotor, so that the rotor has lower gravity center near the axle. The axle has small contact area to the bearing, resulting in stable rotation speed and low noise. The fan motor of the present invention has easy manufacture and low cost.

Description

Fan motor

[technical field]

The present invention relates to a kind of fan motor, and particularly relate to a kind of rotating speed and steadily, do not have oil leakage phenomenon, and fan motor easy to manufacture.

[background technique]

As shown in Figure 1, 2, 3, a kind of in the past fan motor comprises housing 11, a stator 12 and a rotor 13 that runs through at a center.

This housing 11 comprises that a basal wall 111, is arranged in room that framework that the mounting hole 112, of this basal wall 111 extends along this axis Z from these basal wall 111 peripheries 113, defined by this basal wall 111 and framework 113 114, is located at this mounting hole 112 along this axis Z envelope from these room 114 outsides oil seal cover 115 along an axis Z, and a label 116 that is covered on these oil seal cover 115 outsides.

This oil seal cover 115 is to spill with the lubricant oil of avoiding wherein adding in order to close this mounting hole 112, and this label 116 can assist these oil seal cover 115 outsides of further sealing to increase the effect of sealing.

This stator 12 comprises that one is incorporated into central siphon 121, in this mounting hole 112 and is sheathed on bearing 122, a plurality of winding 123 that is arranged at these central siphon 121 outer circumferential faces in this central siphon 121, and a circuit board 124 that is electrically connected on described winding 123.

It is to run through up and down along this axis Z that this bearing 122 has an axis hole 125.

This rotor 13 comprises a flap 131 towards this basal wall 111, one from this flap 131 peripheries extension and around described winding 123 deckle board 132 on every side, one from this flap 131 extends and be extended through this axis hole 125 along this axis Z axle center 133, a plurality ofly lay respectively at this bearing about in the of 122 both sides and be sheathed on the washer 134 in this axle center 133, two lay respectively at this bearing, and about in the of 122 both sides and be sheathed on the scraper ring 135 in this axle center 133, one is arranged in the clasp 136 of this bottom, axle center, a plurality of inner peripheral surfaces that are arranged at this deckle board 132 and corresponding to the magnetic patch 137 of described winding 123, and a plurality of flabellums 138 that are arranged at the outer circumferential face of this deckle board 132.

This clasp 136 is the C shape rings with an opening, this clasp 136 is to be arranged in the retaining ring groove 139 of these axle center 133 side faces, whereby can be so that this axle center 133 can be limited in this axis hole 125 when rotated, and do not have situations that these rotor 13 whole groups detach this bearing 122 and produce.

Described scraper ring 135 and washer 134 are the both sides that are positioned at this axis hole 125, in this axis hole 125 interpolation lubricant oil are arranged during manufacturing, and the purposes of scraper ring 135 and washer 134 is as preventing that lubricant oil from spilling and designing.

More than, be the main structure of fan motor in the past, though use for many years, but owing to still have shortcoming on the structure, so use, manufacture view also has many shortcomings to produce, so that necessity of improvement is arranged, better quality bills of materials and using effect just can be provided, such as:

1. because said structure must use this oil seal cover 115, described washer 134, reach a plurality of members such as described scraper ring 135, and the size of these members is all quite small, be difficult for importing automated process, make complexity and cost of material increase so can cause, and wearing and tearing easily, cause the stuck quality defects that does not change of fan.

2. this axis hole 125 places that must stretch through, this axle center 133, so length can will be grown than this deckle board 132, and also just be subjected to the gravity effect of this deckle board 132 and flabellum 138 easily because of the center of gravity height in the running, make the rotation center of gravity be not easy to concentrate on this 133 places, axle center, so, have the more not steadily situation of beat generation, again because this axle center 133 is that the large size that is circumferential surface contacts with bearing 122, so the beat phenomenon is arranged when not only rotating, also can cause more frictions, cause situations such as noise, wearing and tearing, high temperature, rotating speed reduction also therefore to increase because of beat.

3. under the long-term operation, because this axle center 133 can produce high temperature with the friction of bearing 122, so that just have during rising-heat contracting-cold the slit to produce repeatedly easily at material, especially be easy to generate most the slit with these oil seal cover 115 places, even post this label 116 sealings, long-term operation also can cause the phenomenon of leakage of oil because of the slit.

4. the length in this axle center 133 is longer, and torsion is less, has large size to contact with this bearing 122 again, so can't add the higher lubricant oil of density (for example butter), can only adopt mobile higher oil plant, and when the slit produced, mobile higher oil plant also caused more serious oil leakage phenomenon.

5. in addition when the slit produces, these axis hole 125 places just have convection current to produce, so airborne dust can invade this bearing 122 places, what cause turning round more has some setbacks, and not only reduces the life-span of using, and also increase noise, rotating speed descends and fault.

6. because this clasp 136 is C shape structures (as shown in Figure 3); and on-fixed is in the end of this bearing 122; and just be arranged in the retaining ring groove 139 in this axle center 133; so easy and this axle center 133 is synchronous rotation; so also cause more frictions and noise; because the opening of this clasp 136 causes distortion easily when assembling and rotation, so regular meeting causes coming off under the long-term operation, and then the influence running causes fault again.

7. when this bearing 122 is packed these central siphon 121 location into, can't fixed support because the bottom is a hollow out, do not have the fool proof function in the assembling, do regularly measurement so must rely on the precise measure instrument when making, to guarantee that this bearing 122 is parallel with axis Z and can not be offset, thus, in case when finding that positioning states is incorrect, just must process again by a large amount of by the gross defective productss, even scrap, so will cause the heavy losses in material, man-hour, also may emit the doubt and the risk of defective products outflow shipment.

8. if use the ball bearing (Ball Bearing) of import though value of the product is preferable, but must rely on external import totally, just Receiving dates does not have risk, quality is also difficult to be required and controls, and price exceeds tens times of general sleeve bearings (Sleeve Bearing), so product has no competitive ability.

[summary of the invention]

Therefore, purpose of the present invention is to be to provide a kind of rotating speed steadily, not have oil leakage phenomenon, and fan motor easy to manufacture.

So fan motor of the present invention comprises a housing, a stator, a rotor, and a clasp, it is characterized in that:

This housing comprises the room that framework that a basal wall, extends along an axis from this basal wall periphery, is defined by this basal wall and framework, and one be arranged in this room and be arranged at bearing on this basal wall along this axis, this bearing has an end face in contrast to this basal wall, and is arranged with axis hole in this end face along this axis, and one is formed at innermost bottom surface in this axis hole;

This stator comprises that one is socketed on this bearing outer central siphon, a plurality of winding that is arranged at this central siphon outer circumferential face, an and circuit board that is electrically connected on described winding, the integral body that this stator combines with bearing can form one at a distance of the bottom surface apical margin farthest of this bearing, and first length that extends to this apical margin from this bottom surface;

This rotor comprises a flap towards the end face of this bearing, one from this flap periphery extension and around described winding deckle board on every side, one extends and end is the axle center that is resisted against the bottom surface of this bearing along this axis from this flap, a plurality of inner peripheral surfaces that are arranged at this deckle board and corresponding to the magnetic patch of described winding, and a plurality of flabellums that are arranged at the outer circumferential face of this deckle board, this flap has an inner side surface towards the basal wall of this housing, and one extend to second length of this deckle board end from this inner side surface, this axle center has an axle center length that extends to this inner side surface from the bottom surface of this bearing, and one be formed at its side face and adjacent to the retaining ring groove of the endface position of this bearing, this axle center length is greater than this first length and less than this second length; And

This clasp is to be linked to the end face of this bearing and to extend in the retaining ring groove in this axle center.

Again, fan motor of the present invention can also omit retaining ring groove and this snap ring structure in above-mentioned this axle center, replaces towards the drop guard piece that this axis extends and be arranged at this framework end with one, can reach equally to prevent that this rotor from detaching the function of this stator outside.

Another fan motor of the present invention comprises a housing, a stator, and a rotor, it is characterized in that:

This housing comprises the room that drop guard piece that framework, that a basal wall, extends along an axis from this basal wall periphery is arranged at this framework end and extends towards this axis, is defined by this basal wall and framework, and one be arranged in this room and be arranged at bearing on this basal wall along this axis, this bearing has an end face in contrast to this basal wall, and is arranged with axis hole in this end face along this axis, and one is formed at innermost bottom surface in this axis hole;

This stator comprises that one is socketed on this bearing outer central siphon, a plurality of winding that is arranged at this central siphon outer circumferential face, an and circuit board that is electrically connected on described winding, the integral body that this stator combines with bearing can form one at a distance of the bottom surface apical margin farthest of this bearing, and first length that extends to this apical margin from this bottom surface; And

This rotor comprises a flap towards the end face of this bearing, one from this flap periphery extension and around described winding deckle board on every side, one extends and end is the axle center that is resisted against the bottom surface of this bearing along this axis from this flap, a plurality of inner peripheral surfaces that are arranged at this deckle board and corresponding to the magnetic patch of described winding, and a plurality of flabellums that are arranged at the outer circumferential face of this deckle board, this flap has an inner side surface towards the basal wall of this housing, and one extend to second length of this deckle board end from this inner side surface, this axle center has an axle center length that extends to this inner side surface from the bottom surface of this bearing, and this axle center length is greater than this first length and less than this second length.

Whereby, personnel are as long as directly assemble above-mentioned member, just can precisely finish this fan motor rapidly, and this bearing is to be loaded on the bearing post of level altitude, has the fool proof function in the assembling, so accurate positioning when installing, can rely on any measuring device measures, not only needn't spend and measure man-hour, the bad problem of quality that the generation locating bias is understood by institute on the structure in the past can not take place simultaneously yet, and because this basal wall and bearing are to form enclosed construction, not having the slit produces, so not having the phenomenon of leakage of oil takes place, and the length in this axle center also is to be positioned at this deckle board, and have only the bottom surface with this bearing to join, so this rotor its center of gravity in the running is low and can more concentrate on the center, and rubbing surface with minimum area, and then it is steady to make that fan motor of the present invention can reach rotating speed, do not have oil leakage phenomenon, and stay in grade effect easy to manufacture, and owing to saved burdensome unnecessary washer more in the past, parts such as scraper ring, so very easily import full-automatic production, promote the product competition advantage greatly.

[description of drawings]

Fig. 1 is a sectional view, and a fan motor in the past is described;

Fig. 2 is an exploded view, and the composition structure of above-mentioned this fan motor is described;

Fig. 3 is a schematic representation, and a snap ring structure of above-mentioned this fan motor is described;

Fig. 4 is a sectional view, and first preferred embodiment of fan motor of the present invention is described;

Fig. 5 is an exploded view, and the composition structure of above-mentioned this first preferred embodiment is described;

Fig. 6 is a schematic representation, and the structure of a clasp is described in above-mentioned this first preferred embodiment;

Fig. 7 is a schematic representation, and the another kind of structure of this clasp is described in above-mentioned this first preferred embodiment;

Fig. 8 is a schematic representation, and the another kind of structure of this clasp is described in above-mentioned this first preferred embodiment;

Fig. 9 is a sectional view, and second preferred embodiment of fan motor of the present invention is described;

Figure 10 is an exploded view, and the composition structure of above-mentioned this second preferred embodiment is described;

Figure 11 is a sectional view, and the 3rd preferred embodiment of fan motor of the present invention is described.

[embodiment]

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

Before the present invention is described in detail, be noted that in the following description content that similar elements is to represent with identical numbering.

Shown in Fig. 4,5, first preferred embodiment of fan motor of the present invention comprises a housing 20, a stator 30, a rotor 40, a clasp 50, and a collar 60.

This housing 20 is structures that the center sealing does not run through, and comprise the room 23 that framework that a basal wall 21, extends along an axis Z from these basal wall 21 peripheries 22, is defined by this basal wall 21 and framework 22, and one is arranged in this room 23 and is arranged at bearing 24 on this basal wall 21 along this axis Z.

This basal wall 21 has a bearing post 211 that is arranged in this room 23 and extends along this axis Z, and one around this axis Z and the bulge loop 212 that extends towards this room 23 of this basal wall 21 certainly.

This bearing 24 has an end face 241 in contrast to this basal wall 21, and is arranged with axis hole 242 in this end face 241 along this axis Z, and one be formed at innermost bottom surface 243 in this axis hole 242, and this bottom surface 243 is recessed and is centered close to the arc surface of this axis Z.

This stator 30 comprises that one is socketed on this bearing 24 outer central siphon 31, a plurality of winding 32 that is arranged at these central siphon 31 outer circumferential faces, and a circuit board 33 that is electrically connected on described winding 32.

This central siphon 31 is to be arranged between this bearing post 211 and the bulge loop 212, and the length in this first preferred embodiment is the end face 241 above this bearing 24, after both combine when this stator 30 and bearing 24, integral body can form bottom surface 243 apical margin 311 farthest at a distance of this bearing 24, and first a length D1 who extends to this apical margin 311 from this bottom surface 243, wherein because this central siphon 31 is to exceed this end face 241, so this apical margin 311 is the last edge of this central siphon 31 just, if and these central siphon 31 last edge that produce are also low than this end face 241, then this end face 241 just can form the highest apical margin 311.

This rotor 40 comprises that a flap 41 towards the end face 241 of this bearing 24, extends and deckle board 42 around the described winding 32, extends and end is the axle center 43 that is resisted against the bottom surface 243 of this bearing 24, a plurality of inner peripheral surface that is arranged at this deckle board 42 and corresponding to the magnetic patch 44 of described winding 32 along this axis Z from this flap 41 from these flap 41 peripheries, reaches a plurality of flabellums 45 that are arranged at the outer circumferential face of this deckle board 42.

This flap 41 has an inner side surface 411 towards the basal wall 21 of this housing 20, and one extends to the second length D2 of these deckle board 42 ends from this inner side surface 411.

This axle center 43 is to be the single-point butt with the bottom surface 243 of this bearing 24, and has an axle center length D3 who extends to this inner side surface 411 from this bottom surface 243, and one be formed at its side face and adjacent to the retaining ring groove 431 of end face 241 positions of this bearing 24, this axle center length D3 is greater than this first length D1 and less than this second length D2.

Cooperate Fig. 6,7, shown in 8, this clasp 50 is to be linked to the end face 241 of this bearing 24 and to extend in the retaining ring groove 431 in this axle center 43, upwards break away to limit this axle center 43, avoid this rotor 40 to produce in the situation that breaks away from this stator 30 down that runs up, this clasp 50 is annulars of sealing, and has a center hole 51, and a plurality of otch 52 that stretch out and this clasp 50 is not blocked by this center hole 51, this clasp 50 can form Fig. 6,7, arbitrary structure shown in 8, because the design of otch 52 is arranged, so this axle center 43 can wear this center hole 51 by weight application, and then reach the structure that this clasp 50 snaps in this retaining ring groove 431.

This collar 60 is one to be stacked at this clasp 50 tops, and around the side face in this axle center 43, this collar 60 is to have closely with this bearing 24 in order to this clasp 50 of packing to link.

Whereby, personnel are as long as assemble this stator 30, this clasp 50, this collar 60 in regular turn, weight application is forced into this rotor 40 again, just can finish this fan motor rapidly, and because member reduced many more in the past, more pass through careful thinking in the design, therefore can reach the effect of following quality-improving, such as:

1. reduce quite a lot of member, so manufacture cost reduces, fabrication steps is simplified, and causes the factor of fault also to reduce, so production capacity and yield all significantly promote, also improves quality and life length.

2. this axle center 43 is single-point with the bottom surface 243 of bearing 24 and contacts, and both contact frictions can be quite little, so can reach the effect of high rotating speed low noise.

3. the axle center length D3 in this axle center 43 is less than this second length D2, just this axle center 43 is to be positioned at these deckle board 42 inside (forming the minor axis core structure), so the center of gravity of these rotor 40 integral body is low and can be towards this axle center 43 concentrate, under high speed rotating, still can stablize rotation and reach, the also beat excellent achievement of rocking not, in addition, the arc surface design of these bearing 24 bottom surfaces 243 also can be guided this axle center 43 and be rotated, make it be difficult for to strengthen this rotor 40 integrally rotated stablizing effects towards the side skew.

4. because this axle center 43 is little with the area of contact of the bottom surface 243 of bearing 24, and these axle center 43 length are short, center of gravity is low and can more concentrate on this 43 places, axle center, so the torsion of this rotor 40 is higher, be fit to add the lubricant oil (for example butter) of high density, density because of oil plant is very high again, and has the characteristic that is difficult to flow, so just can reach oil tight effect.

5. the basal wall 21 of this housing 20, this bearing post 211, this bearing 24 all are to form enclosed construction, without any slit and opening, so can't leaking outside, lubricant oil oozes out, and when this rotor 40 rotates, these bearing 24 inside can't form cross-ventilation, so dust just can not invaded, and reaches the using effect that can increase working life, keep long-time good operation.

6. this clasp 50 is closed rings, so even this axle center 43 has beat to produce and this clasp 50 that rubs, also be not easy the situation generation that distortion comes off and rotates synchronously, and can keep long using effect.

This collar 60 can be urgent this clasp 50 link with this bearing 24, so can avoid these clasp 50 skews and with axle center 43 frictions, reach the reduce friction effect of noise, frictional heat of this clasp 50 of location.

8. when making, center hole 51 places that this axle center 43 needs only in alignment with this clasp 50, see through again that weight application is urgent goes in this clasp 50, just can finish installment work with this housing 20, this stator 30, so have importing automation easy to manufacture, the succinct rapid and laborsaving using effect that saves time and can improve yield.

9. these bearing 24 devices are on the bearing post 211 of level altitude, has the fool proof function in the assembling, so accurate positioning can rely on or use any measuring device additionally to go the action of measuring at any time, not only save and measure man-hour, also can not take place that similar structure in the past can produce locating bias simultaneously and the bad problem of quality that forms.

10. this sleeve bearing 24 of the present invention seals, these axle center 43 short structural quality can match in excellence or beauty ball bearing (Ball Bearing), and with low cost, orders easily and manufacturing, so product has competitive ability.

So as shown in the above description, the present invention's fan motor more in the past can promote quite high using effect, and can take into account the progress of making simultaneously, make the richer inter-industry competition advantage that exceeds product of the same trade or business of the present invention with quality.

Shown in Fig. 9,10, below will illustrate further second preferred embodiment of the present invention, this second preferred embodiment and above-mentioned this first preferred embodiment are roughly the same, equally can reach above-mentioned many effects, it is one-body molded with bearing post 211 that its difference is in this bearing 24, and this fan motor also comprises an axle center location piece 70.

This axle center location piece 70 is the bottom surfaces 243 that are arranged at this bearing 24 along this axis Z direction, present equally and cooperate this bottom surface 243 recessed and be centered close to the arc surface of this axis Z, and can reach the function in this axle center 43 of guiding, and can also improve the wear-resisting effect of this bottom surface 243, and when reality is made, what deserves to be mentioned is this bearing 24, this bearing post 211 can be when one penetrates with the plastic-steel material of high abrasion, so also can improve wear-resisting effect, and dispense the installation and the cost of material of these axle center location piece 70 elements.

Cooperate shown in Figure 11, below will illustrate further the 3rd preferred embodiment of the present invention, the 3rd preferred embodiment and above-mentioned this second preferred embodiment are roughly the same, its difference is in this housing 20 and comprises that also one is arranged at the drop guard piece 25 that these framework 22 ends extend towards this axis Z, this drop guard piece 25 is polygonal lamellar bodies, available screw lock, point glue, mode and 22 bindings of this framework such as high frequency fusion and grab, can both reach the purpose that prevents that this rotor 40 from coming off, and can avoid the use of this clasp 50 and the collar 60, reach the effect that reduces member cost and processing procedure more.

So, will be not difficult to find that fan motor of the present invention is really in system via above-mentioned explanation Make process, the stability that turns round, reduce noise and prevent leakage of oil and reduce that dust adheres to etc. each The aspect all has significant progress, so its value of the product can more exceed other products, city The field competitiveness also can significantly promote, fully satisfies having the advantage made from using character concurrently, Satisfy application target of the present invention and function.

Claims

1. a fan motor comprises a housing, a stator, a rotor, and a clasp, it is characterized in that:

2. fan motor as claimed in claim 1 is characterized in that: the basal wall of this housing has a bearing post that is arranged in this room and extends along this axis, and this bearing and bearing post are one-body molded.

3. fan motor as claimed in claim 2 is characterized in that: the basal wall of this housing also has one around this axis and the bulge loop that extends towards this room of this basal wall certainly, and the central siphon of this stator is to be arranged between this bearing post and the bulge loop.

4. fan motor as claimed in claim 1 is characterized in that: also comprise an axle center location piece, this axle center location piece is the bottom surface that is arranged at this bearing along this axial direction, and this axle center end is that the single-point contact is resisted against this axle center location piece.

5. fan motor as claimed in claim 1, it is characterized in that: the length of the central siphon of this stator is the end face above this bearing, forming the bottom surface apical margin farthest at a distance of this bearing, this fan motor also comprises a collar that is stacked at this clasp, and this collar is around this axle center side face.

6. fan motor as claimed in claim 1 is characterized in that: this clasp is the annular of sealing.

7. a fan motor comprises a housing, a stator, and a rotor, it is characterized in that:

This stator comprises that one is socketed on this bearing outer central siphon, a plurality of winding that is arranged at this central siphon outer circumferential face, an and circuit board that is electrically connected on described winding, the integral body that this stator combines with bearing can form one at a distance of the bottom surface apical margin farthest of this bearing, and first length that extends to this apical margin from this bottom surface; And this rotor comprises a flap towards the end face of this bearing, one from this flap periphery extension and around described winding deckle board on every side, one extends and end is the axle center that is resisted against the bottom surface of this bearing along this axis from this flap, a plurality of inner peripheral surfaces that are arranged at this deckle board and corresponding to the magnetic patch of described winding, and a plurality of flabellums that are arranged at the outer circumferential face of this deckle board, this flap has an inner side surface towards the basal wall of this housing, and one extend to second length of this deckle board end from this inner side surface, this axle center has an axle center length that extends to this inner side surface from the bottom surface of this bearing, and this axle center length is greater than this first length and less than this second length.

8. fan motor as claimed in claim 7 is characterized in that: the basal wall of this housing has a bearing post that is arranged in this room and extends along this axis, and this bearing and bearing post are one-body molded.

9. fan motor as claimed in claim 8 is characterized in that: this housing also comprises one around this axis and the bulge loop that extends towards this room of this basal wall certainly, and the central siphon of this stator is to be arranged between this bearing post and the bulge loop.

10. fan motor as claimed in claim 7 is characterized in that: also comprise an axle center location piece, this axle center location piece is the bottom surface that is arranged at this bearing along this axial direction, and this axle center end is that the single-point contact is resisted against this axle center location piece.

11. fan motor as claimed in claim 7, it is characterized in that: its length of the central siphon of this stator is the end face above this bearing, to form bottom surface apical margin farthest at a distance of this bearing, this fan motor also comprises a collar, and this collar is to be arranged at the end face of this bearing and around this axle center side face.