CN1324789C - Rotary balance construction of fan motor rotor - Google Patents
Rotary balance construction of fan motor rotor Download PDFInfo
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- CN1324789C CN1324789C CNB2004100424202A CN200410042420A CN1324789C CN 1324789 C CN1324789 C CN 1324789C CN B2004100424202 A CNB2004100424202 A CN B2004100424202A CN 200410042420 A CN200410042420 A CN 200410042420A CN 1324789 C CN1324789 C CN 1324789C
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- magnet
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- fan motor
- sensing part
- motor rotor
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Abstract
The present invention relates to a rotary balance structure of a fan motor rotor, which comprises a stator, the rotor, a balance magnet and a magnetic inducting part. A shaft pipe is penetrated through a central shaft hole of the stator; the balance magnet is formed at the top end of shaft pipe of the stator; a shaft seat is formed on the inner surface of the rotor; the magnetic inducting part is fixed to the shaft seat of the rotor. When the rotor rotates, the balance magnet correspondingly and magnetically attracts the magnetic inducting part so as to guarantee the rotation of the rotor and the starting stability.
Description
Technical field
The present invention is about a kind of rotary balance of fan motor rotor structure, particularly utilizes the corresponding magnetic of a balanceable magnet and a magnet sensing part about a stator and a rotor, to keep the balance structure of rotational stability.
Background technology
The rotary balance structure of existing fan motor rotor, announce the novel patent of No. 383818 " the radiator fan group structure of tool magnetic location " as TaiWan, China, please refer to shown in Figure 1ly, it comprises a stator 10, a central siphon 20, a rotor 30 and a sense magnetic sheet metal 301.This stator 10 utilizes this central siphon 20 to be fixed on the pedestal 100, and this stator 10 is provided with several pole pieces 11.This central siphon 20 holds at least one bearing 21.
This rotor 30 is provided with an axostylus axostyle 31 and an annular magnet 32.This axostylus axostyle 31 is plugged in this bearing 21, and the annular magnet 32 of this rotor 30 is around the pole-face to pole piece 11 that should stator 10.This sense magnetic sheet metal 301 is positioned at the inner surface of this rotor 30, and corresponding to the end face of this pole piece 11.When motor running, this sense magnetic sheet metal 301 is subjected to the excitatory attraction of alternation of this pole piece 11 simultaneously, thereby can assist the rotary balance of keeping this rotor 30, avoids this rotor 30 to break away from this stator 10, relative to the wearing and tearing of rotating that reduce this bearing 21, and then prolongation motor useful life.
Even so, but still there is following problems in above-mentioned rotary balance structure, for example: because this sense magnetic sheet metal 301 directly utilizes this sense magnetic sheet metal 301 of the excitatory attraction of alternation of this pole piece 11, therefore may cause this pole piece 11 to produce leakage field, and reduce the excitatory efficient of this pole piece 11 relatively; This sense magnetic sheet metal 301 is oversize, and it significantly increases the heavy burden of this rotor 30, thereby reduces the rotating speed of this rotor 30 relatively; Before motor starting, this pole piece 11 is failed this sense magnetic sheet metal 301 of magnetic, and therefore in the moment of starter, it is unbalance that these rotor 30 tendencies produce of short duration rotation, and then still can cause the rotation wearing and tearing of this bearing 21 after long-term the use; This pole piece 11 only should be felt magnetic sheet metal 301 at one dimension direction magnetic, and its rotary balance effect still belongs to limited.
Another commonly uses the rotary balance structure of fan motor rotor, announce No. 423760 " Brushless DC motor structure ", No. 422365 " heat spreader structures of tool magnetic location fan group ", No. 428838 novel patents such as " locating structures of motor rotor " as Taiwan, it is the bottom of a sense magnetic sheet metal being located at a stator, and corresponding to the root edge of an annular magnet of a rotor, the rotary balance of promoting rotor thus.But,, thereby still cause the leakage field of this pole piece because sense magnetic sheet metal is closely in abutting connection with the pole piece of this rotor.Moreover, because therefore sense magnetic sheet metal also causes the electronic component of circuit board to be short-circuited in addition closely in abutting connection with the circuit board of this stator easily.In addition, this annular magnet only should be felt the magnetic sheet metal at one dimension direction magnetic, and its rotary balance effect still belongs to limited.
Another commonly uses the rotary balance structure of fan motor rotor, announce " the gimbal structure of motor " novel patent No. 501823 as Taiwan, it is the bottom that a sense magnetic becket is arranged on a stator, at least one setting ringwall of this sense magnetic becket tool, this setting ringwall can be selected the end section corresponding to an annular magnet of a rotor, to promote the rotary balance of rotor.But when this erect ringwall corresponding to the outer peripheral face of the end section of this annular magnet, the shell that this settings ringwall limits this rotor relatively can supply to be provided with the area of blade; When this erect ringwall corresponding to the inner peripheral surface of the end section of this annular magnet, this setting ringwall then caused the pole piece generation leakage field of this stator, and increases the air gap of this annular magnet and pole piece and the radial dimension of motor relatively.
Another commonly uses the rotary balance structure of fan motor rotor, announce " locating structure of Spindle Motor prestressed magnet " novel patent No. 562330 as Taiwan, it utilizes a setting element one prestressed magnet suitably to be located on the pole piece of a stator, and the metal-back of corresponding magnetic one rotor of this prestressed magnet, thereby the rotary balance that can promote this rotor.But this prestressed magnet is only applicable to have the rotor of metal-back, for example spindle in optical disc drive motor etc.As for the rotor of the small-sized brushless d.c. motor of penetrating the type made from plastics, the inner surface that this prestressed magnet then can't corresponding this rotor of magnetic.Moreover the magnetic force of the prestressed magnet that size is minimum is limited, and it is difficult to the great metal-back of effective magnetic size.In addition, when this prestressed magnet was located on the pole piece of this stator, this prestressed magnet disturbed the alternation of this pole piece excitatory, and then influences the rotational efficienty of rotor.On the other hand.Only at this metal-back of one dimension direction magnetic, its rotary balance effect still belongs to limited this prestressed magnet.
Another commonly uses the rotary balance structure of fan motor rotor, announce " the spin balancing structure of alternating current motor " novel patent No. 513012 as Taiwan, it is to belong to the inner-rotor type alternating current motor, this motor selects to be located at respectively the bottom of an external stator group and the bottom of an internal rotor with a balancing patch and a permanent magnet rings, and corresponding this balancing patch of magnetic of this permanent magnet rings, thereby promote this rotation of inner rotor balance.But, no matter the bottom of this internal rotor is provided with this permanent magnet rings or balancing patch, because this permanent magnet rings or balancing patch all are positioned at the centre bore of this external stator group, therefore still can disturb the excitatory efficient of alternation of this external stator group, and influence this rotation of inner rotor efficient.Moreover only at the corresponding magnetic that forms of one dimension direction, its rotary balance effect still belongs to limited for this permanent magnet rings or balancing patch.
Based on above-mentioned various technical disadvantages, therefore still be necessary further to improve the rotary balance structure of above-mentioned various fan motor rotors.
In view of this, the present invention improves above-mentioned shortcoming, it is that a axle bed at a rotor is provided with a magnet sensing part, and a central siphon correspondence of a stator is provided with a balanceable magnet, this balanceable magnet is with corresponding this magnet sensing part of magnetic of suitable magnetic force, reduce the spacing of this rotor and stator simultaneously, and it is excitatory to avoid interference the alternation of stator, more can select magnetic one axostylus axostyle in addition.Therefore, the present invention not only can keep rotor spin balancing and startup stability, and also can prevent the dust contact bearing, guarantees rotational efficienty, and then effectively prolongs motor useful life.
Summary of the invention
Main purpose of the present invention is to provide a kind of rotary balance structure of fan motor rotor, wherein a central siphon top is provided with a balanceable magnet, this balanceable magnet is with a magnet sensing part of corresponding magnetic one rotor of suitable magnetic force, the present invention had keep the effect of rotor spin balancing and startup stability.
Secondary objective of the present invention is to provide a kind of rotary balance structure of fan motor rotor, wherein a central siphon top is provided with a balanceable magnet, this balanceable magnet at radially corresponding magnetic one axostylus axostyle, has the present invention to keep the effect of rotor spin balancing and startup stability with suitable magnetic force.
Another purpose of the present invention is to provide a kind of rotary balance structure of fan motor rotor, wherein an axle bed of a rotor is provided with a magnet sensing part, and a balanceable magnet is set up on a central siphon top, this balanceable magnet and magnet sensing part can suitably dwindle spacing, make the present invention have the effect of the dustproof effect of gain bearing.
According to the rotary balance structure of fan motor rotor of the present invention, it comprises a stator, a rotor, a balanceable magnet and a magnet sensing part.The central axis hole of this stator passes a central siphon, to hold a bearing, for passing an axostylus axostyle.This balanceable magnet is formed on the top of the central siphon of this stator.The inner surface central authorities position of this rotor forms an axle bed, and extends to form an axostylus axostyle by this axle bed.This magnet sensing part is fixed on the axle bed of this rotor.When this rotor rotation, corresponding this magnet sensing part of magnetic of this balanceable magnet is with the rotation of guaranteeing this rotor and the stability of startup.
Description of drawings
Fig. 1: the assembled sectional view of commonly using the rotary balance structure of fan motor rotor.
Fig. 2: the exploded perspective of the rotary balance structure of the phoenix fan motor rotor of first embodiment of the invention
Fig. 3: the combination of the rotary balance structure of the fan motor rotor of first embodiment of the invention is analysed and observe
Fig. 4: the partial enlarged drawing of Fig. 3 of the present invention.
Fig. 5: amplify the part of the rotary balance structure of the fan motor rotor of second embodiment of the invention
Fig. 6: amplify the part of the rotary balance structure of the fan motor rotor of third embodiment of the invention
Fig. 7: amplify the part of the rotary balance structure of the fan motor rotor of fourth embodiment of the invention
Fig. 8: amplify the part of the rotary balance structure of the fan motor rotor of fifth embodiment of the invention
10 stators, 100 pedestals, 11 pole pieces
12 coils, 20 central siphons, 21 bearings
30 rotors, 301 sense magnetic sheet metals, 31 axostylus axostyles
311 magnet sensing parts, 32 annular magnets, 33 axle beds
34 shoulders, 40 balanceable magnets, 41 axis holes
42 top flanges, 43 first conical surfaces, 50 magnet sensing parts
51 axis holes, 52 second conical surfaces
Embodiment
The part member of the rotary balance structure of fan motor rotor of the present invention is same as the rotary balance structure of commonly using the fan motor rotor of Fig. 1, thereby both same sections employing same reference numbers signs, and its structure and function are no longer given in detail and being given unnecessary details.
Please refer to Fig. 2 to shown in Figure 4, the rotary balance of the fan motor rotor of first embodiment of the invention structure comprises a stator 10, a central siphon 20, a rotor 30, a balanceable magnet 40 and a magnet sensing part 50.
This stator 10 may be selected to be radial windings type or axial winding-type, and it is provided with at least one pole piece 11 and at least one coil 12.When this coil 12 alternations energising, it is excitatory that this pole piece 11 can be responded to the generation alternation.
This central siphon 20 can be selected to make separately or be directly one-body molded on this pedestal 100, and it passes the central axis hole position (not indicating) of this stator 10, and can hold at least one bearing 21.This rotor 30 is provided with an axostylus axostyle 31, an annular magnet 32 and an axle bed 33.This axle bed 33 is convexly equipped with the lower surface middle position at this rotor 30, and this axle bed 33 can be arranged with formation one shoulder 34.This axostylus axostyle 31 is preferable to be made by permeability magnetic material, and it is extended downwards by this axle bed 33, and passes in this bearing 21.This annular magnet 32 is around to pole-face (indicating) that should pole piece 11, and so the alternation of this pole piece 11 is excitatory can rotate in order to drive this rotor 30.This balanceable magnet 40 is made by magnetic material, and it is enclosed within the inside, top of this central siphon 20 with tight fit or gluing mode, and is provided with an axis hole 41, passes this axostylus axostyle 31 for loose fit.This magnet sensing part 50 is made by permeability magnetic material, and it is provided with an axis hole 51, and axis hole 51 peripheries of this magnet sensing part 50 can utilize tight fit or gluing mode to be fixed on the shoulder 34 of this axle bed 33.
Referring again to shown in Figure 4, after the motor assembling, magnet sensing part 50 of the present invention is positioned at axle bed 33 bottom surfaces of this rotor 30, and this balanceable magnet 40 is positioned at the end face of this central siphon 20.Thus, no matter at motor running, static or when starting, therefore this balanceable magnet 40 at least all can suitably keep the spin balancing and the rotational stability of this rotor 30 by the lower surface of corresponding this magnet sensing part 50 of magnetic of upper surface.Because the present invention can select the suitable specification of this magnet sensing part 50, so this magnet sensing part 50 can avoid excessively increasing the heavy burden of this rotor 30, in order to avoid influence the rotating speed of this rotor 30.Moreover, because this balanceable magnet 40 itself has permanent magnetism, therefore this magnet sensing part 50 of still sustainable magnetic and axostylus axostyle 31 when motor is static, and then also can effectively avoid motor to produce of short duration balance phenomenon, the rotary balance and the startup stability of this rotor 30 that so gains starting moment.In addition, this balanceable magnet 40 is the magnet sensing part 50 on this axle bed 33 of magnetic not only, and the outer peripheral face that the inner peripheral surface of the axis hole 41 of this balanceable magnet 40 also can this axostylus axostyle 31 of corresponding magnetic.In other words, this balanceable magnet 40 can utilize two-dimentional magnetic mode further to strengthen the spin balancing and the startup stability of this rotor 30.On the other hand, since between this magnet sensing part 50 and the balanceable magnet 40 apart from the gap length of the end face that can suitably be adjusted to the inner surface that is significantly less than this rotor 30 and stator 10, therefore magnet sensing part 50 of the present invention and balanceable magnet 40 can be used for also preventing that dust from entering this central siphon 20 and contacting this bearing 21, for effectively avoiding this bearing 21 to produce greasy dirt or stuck.
Please refer to shown in Figure 5ly, it discloses rotary balance structure of the fan motor rotor of second embodiment of the invention.Compared to first embodiment, second embodiment is directly by the direct one-body molded magnet sensing part 311 in the appropriate location of this axostylus axostyle 31.This magnet sensing part 311 amplexiforms equally in the bottom surface of this axle bed 33, so the bottom surface that the end face of this balanceable magnet 40 equally can this magnet sensing part 311 of corresponding magnetic.Simultaneously, the inner peripheral surface of the axis hole 41 of this balanceable magnet 40 also can this axostylus axostyle 31 of corresponding magnetic inner peripheral surface, thereby can utilize two-dimentional magnetic mode suitably to keep the rotation of this rotor 30 and balance and stability when starting, the dustproof effect of promoting this central siphon 20 and bearing 21, and further reduce the number of components, to simplify assembling.
See also shown in Figure 6ly, it discloses rotary balance structure of the fan motor rotor of third embodiment of the invention.Compared to first embodiment, the balanceable magnet 40 of the 3rd embodiment directly is attached on the end face of this central siphon 20.Simultaneously, when this rotor 30 formed the less axle bed 33 of sizes, 50 of this magnet sensing parts can be extended radially outwardly by the shoulder 34 of this axle bed 33, so that the bottom surface of this magnet sensing part 50 is to end face that should balanceable magnet 40.Thus, enlarge the corresponding area of this balanceable magnet 40 and magnet sensing part 50 relatively.This balanceable magnet 40 equally can be at two-dimensional directional difference this magnet sensing part 50 of corresponding magnetic and axostylus axostyle 31, thereby utilize two-dimentional magnetic mode suitably to keep the rotation of this rotor 30 and balance and stability when starting, the dustproof effect of promoting this central siphon 20 and bearing 21, and further reduce the number of components, to simplify assembling.Moreover this magnet sensing part 50 can be selected one-body molded on the appropriate location of this axostylus axostyle 31 equally.
Please refer to shown in Figure 7ly, it discloses rotary balance structure of the fan motor rotor of fourth embodiment of the invention.Compared to first embodiment, the balanceable magnet 40 of the 4th embodiment is extended radially outwardly by the top and forms a top flange 42, for utilizing than the long-pending aperture position that is placed in these central siphon 20 tops of large contact surface.
Simultaneously, this magnet sensing part 50 directly is attached to the bottom of this axle bed 33, and utilizes this axis hole 51 to be enclosed within on this axostylus axostyle 31, and its outer peripheral face can be corresponding to the inner peripheral surface of this balanceable magnet 40.The axial length of the preferable inner peripheral surface less than this balanceable magnet 40 of the axial length of the outer peripheral face of this magnet sensing part 50.Thus, the simultaneously outer peripheral face of the magnet sensing part 50 of this axle bed 33 of corresponding magnetic and the outer peripheral face of axostylus axostyle 31 of the inner peripheral surface of this balanceable magnet 40.As a result, present embodiment equally suitably keeps the rotation of this rotor 30 and balance and stability when starting, promote the dustproof effect of this central siphon 20 and bearing 21, and further reduces the number of components.Moreover this magnet sensing part 50 can be selected one-body molded on the appropriate location of this axostylus axostyle 31 equally.
Please refer to shown in Figure 8ly, it discloses rotary balance structure of the fan motor rotor of fifth embodiment of the invention.Compared to first embodiment, the balanceable magnet 40 of the 5th embodiment by this axis hole 41 upwards radially hole enlargement form one first conical surface 43.Simultaneously, this magnet sensing part 50 directly is attached to the bottom of this axle bed 33, and utilizes this axis hole 51 to be enclosed within on this axostylus axostyle 31, and also forms one second conical surface 52, with corresponding to this first conical surface 43.Thus, second conical surface 52 of the magnet sensing part 50 of first conical surface, 43 these axle beds 33 of corresponding magnetic of this balanceable magnet 40, the outer peripheral face of corresponding this axostylus axostyle 31 of magnetic of the inner peripheral surface of the axis hole 41 of this balanceable magnet 40 simultaneously.As a result, present embodiment utilizes two-dimentional magnetic mode suitably to keep the rotation of this rotor 30 equally and balance and stability when starting, promotes the dustproof effect of this central siphon 20 and bearing 21, and further reduces the number of components.Moreover this magnet sensing part 50 can be selected one-body molded on the appropriate location of this axostylus axostyle 31 equally.
As mentioned above, the rotary balance structure of commonly using the fan motor rotor compared to Fig. 1 causes leakage field easily, and only form shortcomings such as corresponding magnetic in the one dimension direction, the present invention of Fig. 2 is provided with this balanceable magnet 40 by the top at this central siphon 20, with the magnet sensing part 50 and the axostylus axostyle 31 of this axle bed 33 of corresponding magnetic, to form two-dimensional directional magnetic effect, it can keep the balance and the stability of the rotation and the startup of this rotor 30 really, and prevent that dust from contacting this bearing 21, and then prolong motor useful life relatively.Magnetic, and only form shortcomings such as corresponding magnetic in the one dimension direction, the present invention of Fig. 2 is provided with this balanceable magnet 40 by the top at this central siphon 20, magnet sensing part 50 and axostylus axostyle 31 with this axle bed 33 of corresponding magnetic, to form two-dimensional directional magnetic effect, it can keep the balance and the stability of the rotation and the startup of this rotor 30 really, and prevents that dust from contacting this bearing 21, and then prolongs motor useful life relatively.
Claims (15)
1, a kind of rotary balance of fan motor rotor structure is characterized in that comprising:
One central siphon, it is located at the central authorities of a stator, and this central siphon has a top, and can hold a bearing;
One rotor, it is provided with an axle bed and an axostylus axostyle, and this axle bed is positioned at the inner surface central authorities of this rotor, and this axostylus axostyle is extended downwards by this axle bed, and passes in the bearing of this central siphon;
One balanceable magnet, it is located at the top of this central siphon, and has a surface at least; And
One magnet sensing part, it is fixed on the axle bed of this rotor, and has a surface at least;
The surface of surperficial corresponding this magnet sensing part of magnetic of this balanceable magnet wherein is with the rotation of keeping this rotor and the balance of startup.
2, the rotary balance of fan motor rotor as claimed in claim 1 structure, it is characterized in that: this balanceable magnet is provided with an axis hole in addition, passes for this axostylus axostyle.
3, the rotary balance of fan motor rotor as claimed in claim 1 structure, it is characterized in that: this magnet sensing part is provided with an axis hole in addition, so that be fixed on this axle bed.
4, the rotary balance of fan motor rotor as claimed in claim 2 structure, it is characterized in that: the axis hole of this balanceable magnet has an inner peripheral surface, and this axostylus axostyle has an outer peripheral face, the outer peripheral face of corresponding this axostylus axostyle of magnetic of the inner peripheral surface of the axis hole of this balanceable magnet.
5, the rotary balance of fan motor rotor as claimed in claim 1 structure is characterized in that:
This balanceable magnet has an end face, and this magnet sensing part has a bottom surface, the bottom surface of corresponding this magnet sensing part of magnetic of the end face of this balanceable magnet.
6, the rotary balance of fan motor rotor as claimed in claim 5 structure, it is characterized in that: this balanceable magnet is contained in the inside, top of this central siphon.
7, the rotary balance of fan motor rotor as claimed in claim 5 structure, it is characterized in that: this balanceable magnet directly is attached on the end face of this central siphon.
8, the rotary balance of fan motor rotor as claimed in claim 1 structure, it is characterized in that: this balanceable magnet has an inner peripheral surface, and this magnet sensing part has an outer peripheral face, the outer peripheral face of corresponding this magnet sensing part of magnetic of the inner peripheral surface of this balanceable magnet.
9, the rotary balance of fan motor rotor as claimed in claim 8 structure, it is characterized in that: this balanceable magnet is contained in the inside, top of this central siphon.
10, the rotary balance of fan motor rotor as claimed in claim 9 structure, it is characterized in that: this balanceable magnet is extended radially outwardly by the top and forms a top flange, for the aperture position on the firm top that is sleeved on this central siphon.
11, the rotary balance of fan motor rotor as claimed in claim 2 structure is characterized in that: this balanceable magnet by this axis hole upwards radially hole enlargement form one first conical surface, this magnet sensing part forms one second conical surface in addition, with corresponding to this first conical surface.
12, the rotary balance of fan motor rotor as claimed in claim 1 structure is characterized in that: this axle bed is arranged with and forms a shoulder, for fixing this magnet sensing part.
13, the rotary balance of fan motor rotor as claimed in claim 1 structure is characterized in that: the one-body molded nearly apical position at this axostylus axostyle of this magnet sensing part.
14, the rotary balance of fan motor rotor as claimed in claim 5 structure, it is characterized in that: this magnet sensing part can be extended radially outwardly by this axle bed, and the bottom surface of this magnet sensing part is corresponding to the end face of this balanceable magnet.
15, the rotary balance of fan motor rotor as claimed in claim 8 structure, it is characterized in that: this magnet sensing part is directly fixed on the bottom surface of this axle bed, and utilizes this axis hole to be sleeved on this axostylus axostyle, and the outer peripheral face of this magnet sensing part is corresponding to the inner peripheral surface of this balanceable magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100424202A CN1324789C (en) | 2004-05-18 | 2004-05-18 | Rotary balance construction of fan motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100424202A CN1324789C (en) | 2004-05-18 | 2004-05-18 | Rotary balance construction of fan motor rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1700566A CN1700566A (en) | 2005-11-23 |
| CN1324789C true CN1324789C (en) | 2007-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100424202A Expired - Fee Related CN1324789C (en) | 2004-05-18 | 2004-05-18 | Rotary balance construction of fan motor rotor |
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| Country | Link |
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| CN (1) | CN1324789C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201306444A (en) * | 2011-07-27 | 2013-02-01 | Yen Sun Technology Corp | Thin type motor |
| JP6195309B2 (en) * | 2014-08-29 | 2017-09-13 | ミネベアミツミ株式会社 | Brushless motor |
| DE102019110714B3 (en) * | 2019-04-25 | 2020-07-23 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Electric machine rotor and method of manufacturing the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN1271987A (en) * | 1999-04-27 | 2000-11-01 | 建准电机工业股份有限公司 | Balancing locator and its magnetic pole piece for brushless DC electric machine |
-
2004
- 2004-05-18 CN CNB2004100424202A patent/CN1324789C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN1271987A (en) * | 1999-04-27 | 2000-11-01 | 建准电机工业股份有限公司 | Balancing locator and its magnetic pole piece for brushless DC electric machine |
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| CN1700566A (en) | 2005-11-23 |
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Assignee: SUNON ELECTRONICS (KUNSHAN) Co.,Ltd. Assignor: Sunonwealth Electric Machine Industry Co.,Ltd. Contract fulfillment period: 2007.7.1 to 2024.5.17 Contract record no.: 2008990000759 Denomination of invention: Rotary balance construction of fan motor rotor Granted publication date: 20070704 License type: Exclusive license Record date: 20081014 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.7.1 TO 2024.5.17; CHANGE OF CONTRACT Name of requester: KUNSHAN GUANGXING ELECTRONICS CO., LTD. Effective date: 20081014 |
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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. |
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