CN102201709B - motor stator - Google Patents
motor stator Download PDFInfo
- Publication number
- CN102201709B CN102201709B CN201110058497.9A CN201110058497A CN102201709B CN 102201709 B CN102201709 B CN 102201709B CN 201110058497 A CN201110058497 A CN 201110058497A CN 102201709 B CN102201709 B CN 102201709B
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- magnet
- wall portion
- motor stator
- plane
- magnetic pole
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Abstract
The present invention relates to a kind of motor stator, comprise shell and the some blocks of magnet being installed in inner surface of outer cover, described magnet forms at least one pair of magnetic pole, each magnetic pole comprises polylith magnet, in described polylith magnet, the outer surface of at least one piece is plane substantially, described shell comprises some wall portion and is connected adjacent wall portion respectively with some connecting portions, and the inner surface of at least one pair of wall portion is plane substantially, for installing the magnet that described outer surface is plane substantially.Motor stator in the present invention, adopt the magnet of polylith reduced size jointly to form a magnetic pole, magnet is simple for production, and stock utilization is high.
Description
Technical field
The present invention relates to a kind of motor stator.
Background technology
No. 10-201206th, Japanese Patent Application Publication discloses a kind of bipolar machine stator.The arc-shaped magnet that described motor stator comprises two block length bar shapeds is installed on the inner surface of two relative arcuate wall of stator casing respectively.
But, this kind of motor stator, the arc-shaped magnet complex manufacturing technology of strip and stock utilization is low.
The present invention aims to provide a kind of motor stator improving the problems referred to above.
Summary of the invention
On the one hand, the invention provides a kind of motor stator, comprise shell and the some blocks of magnet being installed in inner surface of outer cover, described magnet forms at least one pair of magnetic pole, each magnetic pole comprises polylith magnet, and in described polylith magnet, the outer surface of at least one piece is plane substantially, and described shell comprises some wall portion and is connected adjacent wall portion respectively with some connecting portions, the inner surface of at least one pair of wall portion is plane substantially, for installing the magnet that described outer surface is plane substantially.
Preferably, described shell comprises even number wall portion and is connected adjacent wall portion respectively with even number connecting portion, is provided with a center magnet between two blocks of magnet of adjacent same polarity, and the outer surface of described center magnet is plane substantially.
Preferably, described magnet forms a pair magnetic pole, and described shell comprises four wall portion and is connected adjacent wall portion respectively with four connecting portions, and wherein two relative wall portion are parallel to each other, and vertical with other two relative wall portion.
Preferably, two blocks of magnet of described adjacent same polarity and described center magnet are made up of different materials.
Preferably, two blocks of magnet of described adjacent same polarity are made up of Ferrite Material, and described center magnet is made up of rare earth permanent-magnetic material, and the thickness of two blocks of magnet of described adjacent same polarity is greater than the thickness of described center magnet.
Preferably, the inner surface of described shell connecting portion is arc.
Preferably, the inner surface of described wall portion and connecting portion is all plane, and described magnet is tabular magnet.
Preferably, described shell and magnet have uniform thickness, and described magnet is made up of Ferrite Material or is made up of rare earth permanent-magnetic material.
Preferably, described motor stator also comprises positive and negative carbon brush, and be separated by 180 degree of electrical degrees of described positive and negative carbon brush are arranged.
On the other hand, the invention provides a kind of motor stator, described stator comprises shell and is installed in some blocks of magnet of inner surface of outer cover, described magnet forms at least one pair of magnetic pole, each magnetic pole comprises main magnet and auxiliary magnet, the magnetic property of described main magnet is higher than the magnetic property of auxiliary magnet, and the thickness of described main magnet is less than the thickness of auxiliary magnet.
The present invention further improves and is, described magnet forms a pair magnetic pole, described shell is square substantially, comprise four wall portion and be connected adjacent wall portion respectively with four connecting portions, every a junction place is provided with an auxiliary magnet, be provided with a main magnet between two auxiliary magnets of adjacent same polarity, the thickness of described auxiliary magnet is greater than the thickness of main magnet.
The present invention further improves and is, the inner surface of described main magnet is plane or cambered surface.
Illustrated embodiment of the present invention has following beneficial effect: a magnetic pole is formed by the magnet of polylith reduced size, and magnet is simple for production, and stock utilization is high.
In order to further understand feature of the present invention and technology contents, refer to following detailed description for the present invention and accompanying drawing, but institute's accompanying drawing only provides reference and explanation use, is not used for being limited the present invention.
Accompanying drawing explanation
In accompanying drawing:
Fig. 1 is the cross sectional representation of the motor stator of one embodiment of the invention;
Fig. 2 is the cross sectional representation of the motor stator of another embodiment of the present invention;
Fig. 3 is the cross sectional representation of the motor stator of further embodiment of this invention;
Fig. 4 is the relation schematic diagram of carbon brush on the motor stator of one embodiment of the invention and rotor commutator.
Embodiment
Below in conjunction with accompanying drawing, by the specific embodiment of the present invention describe in detail, will make technical scheme of the present invention and other beneficial effects apparent.
Refer to Fig. 1, the motor stator 10 of one embodiment of the invention, comprise shell 30 and the magnet 50,52 being installed in shell 30 inner surface, described magnet 50,52 radially polarizes, described magnet 50,52 forms a pair magnetic pole jointly, and each magnetic pole comprises at least two blocks of magnet 50,52.
Preferably, described shell 30 is square, comprise four wall portion 32 (four wall portion 32 form four limits of square shell 30 respectively) and be connected adjacent wall portion 32 respectively with four connecting portions 34, wherein two opposing walls 32 are parallel to each other, and vertical with other two opposing walls 32.Every a junction 34 place is provided with one block of magnet 50.A center magnet 52 is also provided with between two blocks of magnet 50 of adjacent same polarity.Preferably, described shell 30 has uniform thickness, the inner surface of wall portion 32 is plane substantially, the inner surface of connecting portion 34 is cambered surface, described two center magnet 52 are installed on the inner surface of two respective wall parts 32, and the thickness (along motor radial dimension) of center magnet 52 is less than the thickness (along motor radial dimension) of the magnet 50 being installed on connecting portion 34 place.Preferably, the magnet 50 being installed on connecting portion 34 place is made up of Ferrite Material, and the center magnet 52 being installed on wall portion 32 place is made up of rare earth permanent-magnetic material, and described center magnet 52 serves as main magnet, and the magnet 50 of center magnet 52 both sides serves as auxiliary magnet.Ferrite Material cost is lower, and the magnetic property of rare earth permanent-magnetic material is comparatively strong, and the thicker thinner rare earth permanent-magnetic material of Ferrite Material collocation has the advantage not only meeting performance requirement but also reduce costs.
Alternatively, the thickness of described shell 30 also can be uneven, and as connecting portion is thicker, wall portion is thinner.
Preferably, the two ends of described center magnet 52 come close to or in contact with two blocks of magnet 50 of same polarity respectively, have good continuity to make magnetic field.
In the present embodiment, thicker magnet 50 is arranged at bight (connecting portion) place of square shell 30, thinner center magnet 52 is arranged at the wall portion place of shell 30, can surround a larger inner space, with accommodating rotor to make described magnet 50,52 as far as possible.
Figure 2 shows that the motor stator of another embodiment of the present invention, described motor stator is substantially identical with the motor stator structure shown in Fig. 1, and difference is: the inner surface of described center magnet 52 is cambered surface.The inner surface being positioned at the magnet 50 at shell 30 bight place is also cambered surface, and the inner surface of described center magnet 52 is concentric with the inner surface of the magnet 50 being positioned at shell 30 bight place.Certainly, the inner surface of described center magnet 52 also can decentraction with the inner surface of the magnet 50 being positioned at shell 30 bight place.
Fig. 3 is the cross sectional representation of the motor stator of further embodiment of this invention.
Refer to Fig. 3, described shell 30 is square substantially, comprises four wall portion 32 and four connecting portions 34, is all linear.Each magnetic pole comprises three blocks of tabular magnet 50 (surfaces externally and internally of magnet is all plane), is installed in a pair adjacent connecting portion 34 respectively and is positioned in the wall portion 32 in the middle of described abutting connection 34.All magnet 50 has uniform thickness, can all be made up of Ferrite Material or rare earth permanent-magnetic material is made.Tabular magnet 50 in the present embodiment, simple for production, stock utilization is high.
Fig. 4 is the relation schematic diagram of carbon brush on the motor stator of the embodiment of the present invention and rotor commutator.
Refer to Fig. 4, described motor stator also comprises two positive and negative carbon brush 70, for with commutator 80 sliding contact on rotor, described two positive and negative carbon brush 70 lay respectively between the south poles of magnets of stator, thus 180 degree of mechanical angles of being separated by are arranged, become 90 degree of mechanical angles to arrange compared to positive and negative carbon brush of the prior art, be not easy between positive and negative carbon brush 70 to produce commutation spark short circuit.
In the present invention, magnetic pole is formed by the magnet of polylith reduced size, and magnet is simple for production, and stock utilization is high, and the center magnet 52 be positioned in wall portion 32 can improve the inhomogeneities in magnetic field.
Understandably, motor stator of the present invention is not limited to bipolar machine stator, also may be used for quadrupole motor or other multipolar dynamos.
Understandably, the motor stator of indication of the present invention can be motor stator, also can be generator unit stator.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a motor stator, comprise square shell and the some blocks of magnet being installed in inner surface of outer cover, described magnet forms at least one pair of magnetic pole, described square shell comprises four wall portion and is connected adjacent wall portion respectively with four connecting portions, wherein the inner surface of two relative wall portion is plane and is parallel to each other, other two relative wall portion are vertical with the described wall portion comprising inner plane, it is characterized in that, each magnetic pole comprises the magnet of polylith identical polar, the magnet of described polylith identical polar comprises the center magnet that an outer surface is plane substantially, described center magnet is arranged in the wall portion that described inner surface is plane, the inner surface of every a junction installs a magnet, the described two blocks of magnet be arranged on connecting portion are made up of Ferrite Material, described center magnet is made up of rare earth permanent-magnetic material, the described thickness being arranged on the magnet be made up of rare earth permanent-magnetic material of square shell wall portion is less than the thickness of the magnet be made up of Ferrite Material being arranged on square shell connecting portion.
2. motor stator according to claim 1, is characterized in that, the inner surface of described square shell connecting portion is cambered surface.
3. motor stator according to claim 2, is characterized in that, the inner surface of described center magnet is cambered surface.
4. motor stator according to claim 1, is characterized in that, the inner surface of described center magnet is plane substantially.
5. motor stator according to claim 1, is characterized in that, the inner surface of described wall portion and connecting portion is all plane, and described magnet is tabular magnet.
6. motor stator according to claim 1, is characterized in that, described motor stator also comprises positive and negative carbon brush, and be separated by 180 degree of electrical degrees of described positive and negative carbon brush are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110058497.9A CN102201709B (en) | 2010-03-22 | 2011-03-11 | motor stator |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010130858 | 2010-03-22 | ||
| CN201010130858.1 | 2010-03-22 | ||
| CN201120052904 | 2011-03-02 | ||
| CN201120052904.0 | 2011-03-02 | ||
| CN201110058497.9A CN102201709B (en) | 2010-03-22 | 2011-03-11 | motor stator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102201709A CN102201709A (en) | 2011-09-28 |
| CN102201709B true CN102201709B (en) | 2016-01-20 |
Family
ID=44662170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110058497.9A Expired - Fee Related CN102201709B (en) | 2010-03-22 | 2011-03-11 | motor stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102201709B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4554474A (en) * | 1983-07-07 | 1985-11-19 | Mitsubishi Denki Kabushiki Kaisha | Stator for a magnet motor |
| US4727273A (en) * | 1986-04-04 | 1988-02-23 | Mitsubishi Denki Kabushiki Kaisha | Permanent magnet type electric motor |
| CN101051766A (en) * | 2006-02-24 | 2007-10-10 | 马渊马达株式会社 | Small-sized motor having polygonal outer shape |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5206556A (en) * | 1989-08-29 | 1993-04-27 | Mabuchi Motor Co., Ltd. | Field magnet for miniature motors |
| WO2008048492A2 (en) * | 2006-10-13 | 2008-04-24 | Black & Decker Inc. | Motor with permanent magnets and method of manufacturing; power tool with same |
-
2011
- 2011-03-11 CN CN201110058497.9A patent/CN102201709B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4554474A (en) * | 1983-07-07 | 1985-11-19 | Mitsubishi Denki Kabushiki Kaisha | Stator for a magnet motor |
| US4727273A (en) * | 1986-04-04 | 1988-02-23 | Mitsubishi Denki Kabushiki Kaisha | Permanent magnet type electric motor |
| CN101051766A (en) * | 2006-02-24 | 2007-10-10 | 马渊马达株式会社 | Small-sized motor having polygonal outer shape |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102201709A (en) | 2011-09-28 |
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| 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 | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170621 Address after: Baoan District Shenzhen City manhole street 518125 Guangdong province Shangliao community Xinsha road Dechang Motor Factory Patentee after: Guangdong Dechang Motor Co.,Ltd. Address before: Two new industrial village in Baoan District Shenzhen City manhole town of Guangdong Province in 518125 Patentee before: Johnson Electric (Shenzhen) Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20200311 |
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| CF01 | Termination of patent right due to non-payment of annual fee |