CN100459374C - Easily starting motor structure - Google Patents
Easily starting motor structure Download PDFInfo
- Publication number
- CN100459374C CN100459374C CNB2005100679526A CN200510067952A CN100459374C CN 100459374 C CN100459374 C CN 100459374C CN B2005100679526 A CNB2005100679526 A CN B2005100679526A CN 200510067952 A CN200510067952 A CN 200510067952A CN 100459374 C CN100459374 C CN 100459374C
- Authority
- CN
- China
- Prior art keywords
- magnetic
- rotor
- area
- motor configuration
- weak
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The invention comprises: a securing unit, a rotator and a magnet-sensing balance unit. The securing unit has a stator set having at least one winding and two magnetic pole faces respectively forming a strong magnetic area and a week magnetic area. In said rotator a ring magnet is mounted. Said magnet-sensing balance unit is located on said securing unit, and has at least two magnet-sensing surfaces opposite to said week magnetic area and facing said ring magnet of said rotator. When said rotator runs, said ring magnet senses the alternating magnetic field of said magnetic pole face, and produces a magnetic attraction corresponding to said magnet-sensing surface so as to keep the stability and balance of said rotator.
Description
Technical field
The present invention relates to a kind of motor configuration, particularly the weak magnetic area that several sense magnetic surfaces are faced two magnetic pole strengths of stator group at least is set about a fixed part, so that under the excitatory efficient of the alternation of the strong magnetic area that does not influence this stator pack, an amount of corresponding magnetic counterbalance effect is provided, and then keeps the startup of rotor and the motor balanced structure of rotational stability.
Background technology
The spin balancing structure of known motor rotor, announce " the radiator fan group structure of tool magnetic location " No. 383818 as TaiWan, China, No. 421369 " Brushless DC motor balance location and pole piece structure thereof ", No. 423760 " Brushless DC motor structure ", No. 422365 " heat spreader structures of tool magnetic location fan group ", No. 428838 " locating structure of motor rotor ", No. 539355 " motor balancing patch structure ", No. 501823 " the gimbal structure of motor ", No. 562330 " locating structure of Spindle Motor prestressed magnet ", No. 590330 " structure of tool balancing motor rotor ", M243848 number " the spin balancing structure of motor " and M241969 number " fan motor " novel patent, it roughly comprises a fixed part, one rotor, an one magnetic portion and a magnet sensing part.This fixed part is provided with a pedestal, a central siphon, a bearing, stator group and a circuit board.This central siphon is fixed on the pedestal, and this central siphon can be installed with this bearing.This stator pack selects to use the coil and the pole piece [iron core] of axial winding-type or radial windings type.This rotor is provided with an axostylus axostyle and an annular magnet.This axostylus axostyle is plugged in this bearing, and the annular magnet of this rotor is around to the formed magnetic pole strength of pole piece that should stator pack.This magnetic portion is located at the root edge of this rotor, the central siphon top of this stator pack, or this magnetic portion also can be selected from the annular magnet of this rotor itself, even is selected from the alternating magnetic field that pole piece produced of this stator pack.This magnet sensing part is made by iron material, and its structure can be selected from: the structures such as rotor case of the disk of tool two arc edges, the interior iron-clad of this rotor, ring segment, several knee-pieces or Spindle Motor.On relative position, this magnet sensing part selects to be fixedly arranged on this pedestal, on this circuit board, the inner surface of this rotor, the root edge of this rotor, and to being pressed on this magnetic portion.
When having the motor running of above-mentioned any balance structure, the coil electricity of this stator pack causes each pole-face of this pole piece [or polar arm of iron core] to produce alternating magnetic field, thereby promotes this rotor rotation.During this rotor rotation, this magnet sensing part is subjected to the magnetic attraction of this magnetic portion, thereby in order to the auxiliary rotary balance of keeping this rotor, avoids this rotor axial to break away from this stator pack, and it is relative to the wearing and tearing of rotating that reduce this bearing, and then prolongation motor useful life.
Moreover in above-mentioned No. 501823 and No. 539355, each magnetic pole strength of the pole piece of this stator pack further forms a strong magnetic area and a weak magnetic area.Make moment of this motor starting at the coil electricity of this stator pack, the strong magnetic area of this magnetic pole strength produces stronger alternation excitatory magnetic field relatively, and this weak magnetic area produces more weak alternation excitatory magnetic field relatively.Therefore, the strong magnetic area of this magnetic pole strength and weak magnetic area will cause unequal local alternation excitatory magnetic field, thereby be easy to promote this rotor rotation.
Yet, above-mentioned rotary balance structure uses to have when being easy to start the motor of function, in fact still there is following problems, for example: the sheet metal size of this magnet sensing part is usually as far as possible with the annular magnet of very big area corresponding to this rotor, but this measure may cause this magnet sensing part and magnetic portion that excessive balance magnetic active force is provided.Moreover this magnet sensing part is often excessively contained the alternating magnetic field scope of the magnetic pole strength of this stator pack, particularly almost completely contains the strong magnetic area of this magnetic pole strength, so the alternation excitatory magnetic field of normal this magnetic pole strength of negative effect, and then reduces the rotational efficienty of this rotor.On the other hand, in this rotor startup moment, though the magnetic pole strength of this stator pack is provided with this strong magnetic area and weak magnetic area helps being easy to start this rotor rotation, but the local excitatory inequality that this strong magnetic area and weak magnetic area cause causes this rotor starting the problem that moment supervenes vibration easily, shakes also simultaneously, therefore still be unfavorable for effectively reducing the rotation wearing and tearing of this bearing or prolong motor useful life, the result also causes the real balance effect of this rotary balance structure not as expection.Based on the above-mentioned technical disadvantages of keeping rotary balance, still be necessary further to improve the spin balancing structure of said motor rotor really.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of motor configuration is provided, wherein a fixed part is provided with the weak magnetic area of several sense magnetic surfaces in the face of at least two magnetic pole strengths of stator group, so that under the excitatory efficient of the alternation of the strong magnetic area that does not influence this stator pack, an amount of corresponding magnetic counterbalance effect is provided, makes the present invention have to guarantee the effect of rotor rotation efficient and spin balancing.
Another technical problem that the present invention will solve is: a kind of motor configuration is provided, wherein a fixed part is provided with the weak magnetic area of several sense magnetic surfaces in the face of at least two magnetic pole strengths of stator group, thus in motor starting moment, this sense magnetic surface can dwindle the strong magnetic area of this stator pack and the excitatory difference between the weak magnetic area, to avoid producing of short duration unbalance vibration or jitter phenomenon, to make the present invention have keeping the effect of rotor startup stability and exciting balance.
Technical solution of the present invention is: a kind of motor configuration, it comprises: a fixed part, it is provided with stator group, this stator pack has at least one coil and at least one pole piece, this pole piece extends to form at least two magnetic pole strengths, and this magnetic pole strength respectively forms a strong magnetic area and a weak magnetic area, and can the switch on strong magnetic area that makes this magnetic pole strength and weak magnetic area of this coil produces the alternation excitatory magnetic field of varying strength; One rotor, it is provided with an axostylus axostyle and an annular magnet, and this axostylus axostyle is incorporated into this fixed part rotationally, and this annular magnet is located on the inner peripheral surface of this rotor, and to magnetic pole strength that should stator pack; And at least one magnetic-sensing balance portion, it is located on this fixed part, this magnetic-sensing balance portion is provided with at least two sense magnetic surfaces altogether, one side of this sense magnetic surface is to the weak magnetic area of small part in the face of at least two magnetic pole strengths of this stator pack, and the opposite side that should feel magnetic surface is simultaneously also faced at least one surface of the annular magnet of this rotor; Wherein when this rotor rotation, the annular magnet of this rotor is responded to the strong magnetic area of this stator pack and the varying strength alternation excitatory magnetic field of weak magnetic area, and the annular magnet magnetic attraction of this rotor is arranged at the sense magnetic surface of this weak magnetic area, thereby keeps the startup stability and the spin balancing of this rotor.
Characteristics of the present invention and advantage are: motor configuration of the present invention, it comprises a fixed part, a rotor and a magnetic-sensing balance portion.This fixed part is provided with stator group, and this stator pack has at least one coil and at least two magnetic pole strengths, and this magnetic pole strength respectively forms a strong magnetic area and a weak magnetic area.Establish an annular magnet in this rotor.This magnetic-sensing balance portion is located on this fixed part, and is provided with at least two sense magnetic surfaces, and a side of this sense magnetic surface regards to the weak magnetic area of this magnetic pole strength at least, feels the annular magnet of the opposite side of magnetic surface to this rotor simultaneously.When this rotor rotation, the annular magnet of this rotor is responded to the alternating magnetic field of this magnetic pole strength, and this sense magnetic surface of corresponding magnetic, thereby effectively keeps the startup stability and the spin balancing of rotor.
Because the present invention is provided with several sense magnetic surfaces at fixed part, this sense magnetic surface is not only faced the annular magnet of rotor, and further face the weak magnetic area of at least two magnetic pole strengths of stator pack, so can be under the excitatory efficient of the alternation of the strong magnetic area that does not influence this stator pack, an amount of corresponding magnetic counterbalance effect is provided, and avoids motor to produce of short duration unbalance vibration or jitter phenomenon starting moment relatively.Therefore, the present invention can not only keep rotor startup stability and spin balancing, and effectively guarantees rotational efficienty and prolong motor useful life.
Description of drawings
Fig. 1 is the exploded perspective view of the motor configuration of first embodiment of the invention.
Fig. 2 is the assembled sectional view of the motor configuration of first embodiment of the invention.
Fig. 2 a is another assembled sectional view of the motor configuration of first embodiment of the invention.
Fig. 2 b is an assembled sectional view again of the motor configuration of first embodiment of the invention.
Fig. 3 is the exploded perspective view of the motor configuration of second embodiment of the invention.
Fig. 4 is the assembled sectional view of the motor configuration of second embodiment of the invention.
Fig. 5 is the exploded perspective view of the motor configuration of third embodiment of the invention.
Fig. 6 is the assembled sectional view of the motor configuration of third embodiment of the invention.
The drawing reference numeral explanation:
10 fixed parts, 11 pedestals, 12 central siphons
13 bearings, 14 stator pack, 140 magnetic pole strengths
141 pole pieces, 142 coils, 14 ' stator pack
140 ' magnetic pole strength, 141 ' pole piece, 142 ' coil
143 perforation, 15 circuit boards, 151 sensing elements
20 rotors, 21 axostylus axostyles, 22 iron-clads
23 annular magnets, 30 magnetic-sensing balance portions, 31 axis holes
32 sense magnetic surfaces, 32 ' sense magnetic surface, 33 breach
34 extensions, 40 magnetic-sensing balance portions, 41 sense magnetic surfaces
G pole gap S strong magnetic area W weak magnetic area
Embodiment
In order to allow technique scheme of the present invention, feature and advantage understand by clearer and more definite quilt, hereinafter will be especially exemplified by preferred embodiment of the present invention, and conjunction with figs. is described in detail below.
Please refer to shown in Figure 1, the motor configuration of first embodiment of the invention comprises a fixed part 10, a rotor 20 and a magnetic-sensing balance portion 30, it can be applicable to high-tech field of motors such as radiator fan or spindle in optical disc drive motor, particularly has the radiator fan or the spindle in optical disc drive motor that are easy to start structure.
Please refer to shown in Fig. 1 and 2, the fixed part 10 of first embodiment of the invention is provided with a pedestal 11, a central siphon 12, a bearing 13, stator group 14 and a circuit board 15.This pedestal 11 can be incorporated into the housing of a motor.This central siphon 12 can be selected to make separately or be directly one-body molded on this pedestal 11.The inside of this central siphon 12 is in order to being installed with at least one this bearing 13, and external diameter is in order to wear in conjunction with this stator pack 14 and circuit board 15.This bearing 13 is optional from known bearing constructions such as oiliness bearing, ball bearing, liquid bearing or magnetic bearings.This stator pack 14 may be selected to be the stator structure of radial windings type, and it is provided with at least one pole piece 141 and reaches two coil 142 at least.This pole piece 141 axially piles up mutually, this coil 142 radially around circle on this pole piece 141, and this pole piece 141 radially extends to form several magnetic pole strengths 140, then forms a pole gap G respectively between the end of each two adjacent magnetic pole strength 140.Each magnetic pole strength 140 can be divided into a strong magnetic area S and a weak magnetic area w.This strong magnetic area s has relatively large radial thickness, and the radial air gap less at interval with the annular magnet 23 of this rotor 20; This weak magnetic area w then has less relatively radial thickness, and with the big at interval radial air gap of annular magnet 23 of this rotor 20.This circuit board 15 suitably is provided with at least one sensing element 151, and this sensing element 151 is in order to respond to the rotary state of this rotor 20.When the control circuit conducting electric current of this circuit board 15, the control circuit of this circuit board 15 is controlled the sense of current of this coil 142 alternately.And then the strong magnetic area S that makes this magnetic pole strength 140 produces stronger alternation excitatory magnetic field relatively, and this weak magnetic area w then produces more weak alternation excitatory magnetic field relatively simultaneously.
Shown in Fig. 1 and 2, the rotor 20 of first embodiment of the invention comprises an axostylus axostyle 21, an iron-clad 22 and an annular magnet 23.One end of this axostylus axostyle 21 is fixed on the inner surface middle position of this iron-clad 22, and the other end of this axostylus axostyle 21 extends downwards, in the rotating bearing 13 that is inserted in this fixed part 10.This annular magnet 23 is located on the inner peripheral surface of this iron-clad 22.The interior of this annular magnet 23 has several sections different N, S polar region [not illustrating] with mask, and this annular magnet 23 is radially corresponding to the magnetic pole strength 140 of the pole piece 141 of this stator pack 14, and so the unequal alternation that is provided by the strong magnetic area s and the weak magnetic area w of this magnetic pole strength 140 is excitatory promptly can be used for driving this rotor 20 and rotate.
Referring again to Figure 1 and Figure 2, the magnetic-sensing balance portion 30 of first embodiment of the invention is in the form of annular discs, it is made by magnetic conductivity materials such as ferrous metals, the central authorities of this magnetic-sensing balance portion 30 are provided with an axis hole 31, and the outer peripheral edges of this magnetic-sensing balance portion 30 axially make progress [or downwards] extend to form at least two sense magnetic surfaces 32.This magnetic-sensing balance portion 30 utilizes this axis hole 31 to be set in central siphon 12 external diameters of this fixed part 10, and the lower surface or the upper surface of this circuit board 15 can be selected to be attached at by this magnetic-sensing balance portion 30, when assembling, the inner peripheral surface of the another side of magnetic surface 32 to the annular magnet 23 of this rotor 20 should be felt simultaneously in the preferable weak magnetic area w position that regards at least two corresponding magnetic pole strengths 140 of this stator pack 14 of one side of this sense magnetic surface 32.More specifically, shown in Fig. 2,2a and 2b, the span of this sense magnetic surface 32 can select less than, be equal to or greater than the length of this weak magnetic area w, but this sense magnetic surface 32 is the strong magnetic area S that do not regard to this magnetic pole strength 140.When the span of this sense magnetic surface 32 during greater than the length of this weak magnetic area w, this sense magnetic surface 32 extends to the pole gap G scope that is adjacent to this weak magnetic area w in fact.This sense magnetic surface 32 can be selected to contain fully or part contains this pole gap G scope.
Shown in Fig. 1 and 2, after motor was finished assembling, the sense magnetic surface 32 of magnetic-sensing balance of the present invention portion 30 was fixed on this fixed part 10.This sense magnetic surface 32 is faced the weak magnetic area w position of at least two magnetic pole strengths 140 of this stator pack 14, and faces the inner peripheral surface of the annular magnet 23 of this rotor 20.Thus, in motor starting moment, the strong magnetic area s of this magnetic pole strength 140 and weak magnetic area w cause unequal local alternation excitatory magnetic field, thereby help promoting this rotor 20 and rotate.At this moment, though that this sense magnetic surface 32 does not produce alternation is excitatory, can be in the scope of this weak magnetic area w provide magnetic balanced action power jointly with the inner peripheral surface of this annular magnet 23.The magnetic balanced action power of this sense magnetic surface 32 can reduce the excitatory difference of alternation of this weak magnetic area and strong magnetic area s relatively, therefore can avoid motor to produce of short duration unbalance vibration or jitter phenomenon, the startup balance and the startup stability of this rotor 20 that so gains starting moment relatively.
On the other hand, when motor running, this magnetic pole strength 140 mainly is that the strong alternating magnetic field by this strong magnetic area S drives this rotor 20 and rotates, and the more weak alternating magnetic field of this weak magnetic area w is in fact only in order to this rotor 20 of process auxiliary drive.More specifically, the present invention will feel magnetic surface 32 contrapositions and be located in the scope of this weak magnetic area w (and pole gap G).So this sense magnetic surface 32 does not only influence the alternation suction magnetic efficiency of the strong magnetic area s of this stator pack 14, also can further provide an amount of corresponding magnetic counterbalance effect simultaneously, with spin balancing and the rotational stability of suitably keeping this rotor 20.
Please refer to Fig. 3 and shown in Figure 4, it discloses the motor configuration of second embodiment of the invention.With respect to first embodiment, magnetic-sensing balance portion 30 essence of second embodiment form several breach 33 to the strong magnetic area S of magnetic pole strength 140 that should stator pack 14.The weak magnetic area w of the magnetic pole strength 140 that 30 pairs in this magnetic-sensing balance portion should stator pack 14 forms several extensions 34 simultaneously, and directly forms several sense magnetic surfaces 32 ' by the end upper surface of this extension 34.This strong magnetic area S has relatively large radial thickness, this weak magnetic area w has less relatively radial thickness, the annular magnet 23 of this strong magnetic area S and weak magnetic area w and this rotor 20 is the same radial air gap at interval, and this weak magnetic area w further forms a perforation 143, moreover this magnetic-sensing balance portion 30 can select to be attached at the lower surface or the upper surface of this circuit board 15 equally.After finishing assembling, this sense magnetic surface 32 ' preferable basal surface of facing the annular magnet 23 of this rotor 20.Moreover the sense magnetic surface 32 ' of this extension 34 is not less than the length of this weak magnetic area w.When the span of the sense magnetic surface 32 ' of this extension 34 during greater than the length of this weak magnetic area w, this sense magnetic surface 32 ' is to extend to the pole gap G scope that is adjacent to this weak magnetic area w.This sense magnetic surface 32 can be selected to contain fully or part contains this pole gap G scope.Thus, the sense magnetic surface 32 ' of this magnetic-sensing balance portion 30 and the annular magnet 23 of rotor 20 can provide an amount of corresponding magnetic counterbalance effect equally under the excitatory efficient of alternation of the strong magnetic area S that does not influence this magnetic pole strength 140, and avoid motor to produce of short duration unbalance vibration or jitter phenomenon starting moment relatively, and then suitably keep startup balance, startup stability, spin balancing and the rotational stability of this rotor 20.
Please refer to Fig. 5 and shown in Figure 6, it discloses the motor configuration of third embodiment of the invention.Compared to first embodiment, the 3rd embodiment setting at least two magnetic-sensing balance portions 40, this magnetic-sensing balance portion 40 is curved short sheet metals, this magnetic-sensing balance portion 40 respectively forms a sense magnetic surface 41 by upper surface.Simultaneously, the stator group 14 ' that this fixed part 10 is selected else with axial winding-type, it is provided with at least two pole pieces 141 ' and a coil 142 '.This coil 142 ' axially around circle between this two pole piece 141 ', and this pole piece 141 ' radially extends to form several magnetic pole strengths 140 ', this magnetic pole strength 140 ' each tool one strong magnetic area S and weak magnetic area w, and form a pole gap G ' respectively between each two adjacent magnetic pole strength 140 '.This strong magnetic area S is compared to the less at interval radial air gap of the annular magnet 23 of this weak magnetic area w and this rotor 20.After finishing assembling, this magnetic-sensing balance portion 40 is fixedly arranged on the pedestal 11 or circuit board 15 of this fixed part 10, and faces the weak magnetic area w position of this magnetic pole strength 140 ' respectively, and should feel the basal surface of magnetic surface 41 in the face of the annular magnet 23 of this rotor 20.Moreover this magnetic-sensing balance portion 40 is not less than the length of this weak magnetic area w.When the span of this magnetic-sensing balance portion 40 during greater than the length of this weak magnetic area w, this sense magnetic surface 41 extends to the pole gap G scope that is adjacent to this weak magnetic area w.This sense magnetic surface 41 can be selected to contain fully or part contains this pole gap G scope.Thus, the sense magnetic surface 41 of this magnetic-sensing balance portion 40 can provide an amount of corresponding magnetic counterbalance effect equally with the annular magnet 23 of rotor 20 under the excitatory efficient of alternation of the strong magnetic area S that does not influence this magnetic pole strength 140 ', and avoid motor to produce of short duration unbalance vibration or jitter phenomenon starting moment relatively, and then suitably keep startup balance, startup stability, spin balancing and the rotational stability of this rotor 20.
As mentioned above, with respect to the shortcomings such as magnetic pole strength excitatory efficient of various known motor configurations by magnet sensing part and the normal excessive influence stator pack of corresponding magnetic active force that magnetic portion provided, the present invention is by being provided with this sense magnetic surface 32 at this fixed part 10, this sense magnetic surface 32 is in the face of at least two corresponding magnetic pole strength 140 formed weak magnetic area w of this stator pack 14, and face the annular magnet 23 of this rotor 20 simultaneously, it can provide an amount of corresponding magnetic counterbalance effect really under the excitatory efficient of alternation of the strong magnetic area S that does not influence this magnetic pole strength 140, and avoid motor to produce of short duration unbalance vibration or jitter phenomenon starting moment relatively, and then startup stability and spin balancing, and effectively guarantee rotational efficienty and prolong motor useful life suitably to keep this rotor 20.
Though the present invention has utilized aforementioned preferred embodiment to disclose in detail; right its is not in order to limit the present invention; anyly have the knack of this skill person; without departing from the spirit and scope of the present invention; when can doing various changes and modification, so protection scope of the present invention is as the criterion when looking appended the claim person of defining.
Claims (17)
1, a kind of motor configuration is characterized in that, comprises:
One fixed part, it is provided with stator group, this stator pack has at least one coil and at least one pole piece, this pole piece extends to form at least two magnetic pole strengths, and this magnetic pole strength respectively forms a strong magnetic area and a weak magnetic area, and can the switch on strong magnetic area that makes this magnetic pole strength and weak magnetic area of this coil produces the alternation excitatory magnetic field of varying strength;
One rotor, it is provided with an axostylus axostyle and an annular magnet, and this axostylus axostyle is incorporated into this fixed part rotationally, and this annular magnet is located on the inner peripheral surface of this rotor, and to magnetic pole strength that should stator pack; And
At least one magnetic-sensing balance portion, it is located on this fixed part, this magnetic-sensing balance portion is provided with at least two altogether and feels magnetic surfaces, and side of this sense magnetic surface is to the weak magnetic area of small part in the face of at least two magnetic pole strengths of this stator pack, and the opposite side that should feel magnetic surface is simultaneously also faced at least one surface of the annular magnet of this rotor;
Wherein when this rotor rotation, the annular magnet of this rotor is responded to the strong magnetic area of this stator pack and the varying strength alternation excitatory magnetic field of weak magnetic area, and the annular magnet magnetic attraction of this rotor is arranged at the sense magnetic surface of this weak magnetic area, thereby keeps the startup stability and the spin balancing of this rotor.
2, motor configuration as claimed in claim 1 is characterized in that, the length of this sense magnetic surface select less than, be equal to or greater than the length of this weak magnetic area, this sense magnetic surface is the strong magnetic area that does not regard to this magnetic pole strength simultaneously.
3, motor configuration as claimed in claim 2 is characterized in that, when the span of this sense magnetic surface during greater than the length of this weak magnetic area, this sense magnetic surface extends to a pole gap scope that is adjacent to this weak magnetic area.
4, motor configuration as claimed in claim 3 is characterized in that, this sense magnetic surface selects to contain wholly or in part this pole gap scope.
5, motor configuration as claimed in claim 1 is characterized in that, this magnetic-sensing balance portion is in the form of annular discs, and its central authorities are provided with an axis hole, for a central siphon external diameter that is set in this fixed part.
6, motor configuration as claimed in claim 5 is characterized in that, this sense magnetic surface is that the outer peripheral edges by this magnetic-sensing balance portion extend axially and form, and should sense magnetic surface in the face of the inner peripheral surface of the annular magnet of this rotor.
7, motor configuration as claimed in claim 1 is characterized in that, this fixed part is provided with a circuit board in addition, the lower surface in this circuit board amplexiforms in this magnetic-sensing balance portion.
8, motor configuration as claimed in claim 1 is characterized in that, this fixed part is provided with a circuit board in addition, and the upper surface in this circuit board amplexiforms in this magnetic-sensing balance portion.
9, motor configuration as claimed in claim 1 is characterized in that, the radial thickness of the strong magnetic area of this magnetic pole strength is greater than the radial thickness of this weak magnetic area.
10, motor configuration as claimed in claim 1 is characterized in that, the big at interval radial air gap of the radial air gap that the strong magnetic area of this magnetic pole strength and the annular magnet of this rotor are less at interval, the annular magnet of this weak magnetic area and this rotor.
11, motor configuration as claimed in claim 1 is characterized in that, the weak magnetic area of this magnetic pole strength this strong magnetic area relatively further forms a perforation.
12, motor configuration as claimed in claim 5 is characterized in that, this magnetic-sensing balance portion forms several breach to the strong magnetic area of magnetic pole strength that should stator pack, and this magnetic-sensing balance portion forms several extensions to the weak magnetic area of magnetic pole strength that should stator pack simultaneously.
As the motor configuration of claim 12, it is characterized in that 13, this sense magnetic surface is formed on the end upper surface of the extension of this magnetic-sensing balance portion, and should feel the basal surface of magnetic surface in the face of the annular magnet of this rotor.
14, motor configuration as claimed in claim 1 is characterized in that, this magnetic-sensing balance portion is several curved short sheet metals, and this sense magnetic surface is formed directly into the upper surface of this magnetic-sensing balance portion.
As the motor configuration of claim 14, it is characterized in that 15, this magnetic-sensing balance portion is fixedly arranged on the circuit board of this fixed part, and regard to the weak magnetic area position of the magnetic pole strength of this stator pack respectively, and should feel the basal surface of magnetic surface in the face of the annular magnet of this rotor.
As the motor configuration of claim 14, it is characterized in that 16, this magnetic-sensing balance portion is fixedly arranged on the pedestal of this fixed part, and regard to the weak magnetic area position of the magnetic pole strength of this stator pack respectively, and should feel the basal surface of magnetic surface in the face of the annular magnet of this rotor.
17, motor configuration as claimed in claim 1 is characterized in that, this stator pack is selected from the stator structure of radial windings type or axial winding-type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100679526A CN100459374C (en) | 2005-04-28 | 2005-04-28 | Easily starting motor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100679526A CN100459374C (en) | 2005-04-28 | 2005-04-28 | Easily starting motor structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1855672A CN1855672A (en) | 2006-11-01 |
| CN100459374C true CN100459374C (en) | 2009-02-04 |
Family
ID=37195594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100679526A Expired - Fee Related CN100459374C (en) | 2005-04-28 | 2005-04-28 | Easily starting motor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100459374C (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4899075A (en) * | 1986-03-04 | 1990-02-06 | Shinano Kenshi Kabushiki Kaisha | Two-phase DC brushless motor |
| US5962938A (en) * | 1997-10-21 | 1999-10-05 | General Electric Company | Motor with external rotor |
| CN1268800A (en) * | 1999-03-26 | 2000-10-04 | 建准电机工业股份有限公司 | Brushless D. C. electric motor |
| CN2538095Y (en) * | 2002-03-21 | 2003-02-26 | 建准电机工业股份有限公司 | Motor balance sheet structure |
| US6756718B2 (en) * | 2001-06-08 | 2004-06-29 | Bill Lee | Positioning structure for air fan induction element and stator |
-
2005
- 2005-04-28 CN CNB2005100679526A patent/CN100459374C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4899075A (en) * | 1986-03-04 | 1990-02-06 | Shinano Kenshi Kabushiki Kaisha | Two-phase DC brushless motor |
| US5962938A (en) * | 1997-10-21 | 1999-10-05 | General Electric Company | Motor with external rotor |
| CN1268800A (en) * | 1999-03-26 | 2000-10-04 | 建准电机工业股份有限公司 | Brushless D. C. electric motor |
| US6756718B2 (en) * | 2001-06-08 | 2004-06-29 | Bill Lee | Positioning structure for air fan induction element and stator |
| CN2538095Y (en) * | 2002-03-21 | 2003-02-26 | 建准电机工业股份有限公司 | Motor balance sheet structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1855672A (en) | 2006-11-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI338434B (en) | Three phase opposite rotating motor and fan | |
| JP4784726B2 (en) | DC motor | |
| JP4240949B2 (en) | Permanent magnet type rotating electrical machine rotor | |
| JP2006230176A (en) | Structure of motor | |
| JP2001186743A (en) | Single-phase commutatorless motor | |
| JP2000341909A (en) | Single-bearing type permanent-magnet motor and single- bearing type fan motor | |
| KR970060640A (en) | Double stator coreless bi-DC motor | |
| CN100459374C (en) | Easily starting motor structure | |
| CN100399681C (en) | Motor with magnetic-sensing balance sheet | |
| JP4397465B2 (en) | Mounting structure of rotating shaft of rotating electrical machine | |
| JP2009239986A (en) | Coil bobbin and rotating machine using the same | |
| JP2006280022A (en) | Electric air blower using permanent magnet synchronous motor | |
| CN100399680C (en) | Rotor balance structure of motor | |
| CN100446383C (en) | Motor structure | |
| CN100481675C (en) | Motor structure | |
| CN100481676C (en) | Motor structure | |
| CN212518578U (en) | Rotor unit and hybrid excitation motor | |
| KR100312343B1 (en) | Single phase brushless fan motor | |
| JP2006304416A (en) | Skeleton-type bldc motor | |
| CN201499112U (en) | Magnetic suspension motor | |
| JP2006288081A (en) | Axial gap electric motor | |
| JPH09182366A (en) | Oscillation motor | |
| JPH0747976Y2 (en) | High speed reluctance motor rotor | |
| KR20020040038A (en) | Rotor for embedded permanent magnet bldc motor | |
| CN1700566A (en) | Rotary balance construction of fan motor rotor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: The new Taiwan China Ya Lu Kaohsiung City No. 30 Lane 296 Patentee after: Sunonwealth Electric Machine Industry Co.,Ltd. Address before: Kaohsiung City, Taiwan, China Patentee before: Sunonwealth Electric Machine Industry Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090204 |