CN103001338A - Brushless direct-current motor - Google Patents
Brushless direct-current motor Download PDFInfo
- Publication number
- CN103001338A CN103001338A CN2012104200652A CN201210420065A CN103001338A CN 103001338 A CN103001338 A CN 103001338A CN 2012104200652 A CN2012104200652 A CN 2012104200652A CN 201210420065 A CN201210420065 A CN 201210420065A CN 103001338 A CN103001338 A CN 103001338A
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- CN
- China
- Prior art keywords
- stator
- rotor
- magnetic strip
- permanent magnetic
- motor
- 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.)
- Pending
Links
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 230000004907 flux Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention discloses a brushless direct-current motor which comprises a rotor and a stator. An insulating layer covers the periphery of the stator, two layers of permanent magnet strips which are arranged in a crossed manner are radially disposed on the rotor, each inner-layer permanent magnet strip is in the shape of an arc, and centers of the arcs are positioned in gaps among the adjacent outer-layer permanent magnet strips. The brushless direct-current motor has the advantages that the insulating layer covers the periphery of the stator, and a permanent magnet on the rotor is of a double-layer structure, so that leakage flux is reduced, and the efficiency of the motor is improved.
Description
Technical field
The present invention is a kind of brshless DC motor.
Background technology
Brshless DC motor generally is to adopt wound stator and permanent magnet rotor structure at present, although the electric efficiency of permanent magnet rotor is higher, has all the time leakage field, causes the magnetic energy part of electric energy conversion by useless consuming, and causes the wasting of resources.
Summary of the invention
The purpose of this invention is to provide a kind of brshless DC motor, solve the problem of existing fluid pump waste of material.
Purpose of the present invention is come specific implementation by the following technical programs: a kind of brshless DC motor, comprise rotor and stator, and this stator periphery is coated with insulating barrier; Radially be provided with two-layer permanent magnetic strip arranged in a crossed manner on this rotor, the internal layer permanent magnetic strip is made as arc, this arc be centered close to slit between the outer adjacent permanent magnetic strip.
Further, this skin permanent magnetic strip is made as arc, and the center overlaps with rotor.
Further, this skin permanent magnetic strip is interior thickness greater than two ends.
Further, this stator is made as the two-phase winding type.
Brshless DC motor of the present invention is at stator periphery coated insulation layer, and epitrochanterian permanent magnet is made as double-layer structure, reduced the leakage field phenomenon, improved electric efficiency.
Description of drawings
The below is described in further detail the present invention with embodiment with reference to the accompanying drawings.
Fig. 1 is the structure chart of the described brshless DC motor of the embodiment of the invention.
Embodiment
As shown in Figure 1, the described brshless DC motor of the embodiment of the invention comprises rotor 2 and stator 1, and this stator 1 periphery is coated with insulating barrier 3; Radially be provided with two-layer permanent magnetic strip arranged in a crossed manner on this rotor 2, internal layer permanent magnetic strip 22 is made as arc, this arc be centered close to slit between the outer adjacent permanent magnetic strip 21.The magnetic field that stator 1 produces is insulated layer 3 and intercepts, and the slit leakage field between the permanent magnetic strip 21 that rotor 2 skins are adjacent is simultaneously utilized by internal layer permanent magnetic strip 22; Internal layer permanent magnetic strip 22 is made as arc, more is conducive to utilize the slit leakage field.
Selectively, outer permanent magnetic strip 21 is made as arc, its center overlaps with rotor center, can utilize better magnetic force; And the two-end thickness of outer permanent magnetic strip is made as less than interior thickness, reduces the vibration in the rotor operation.
Selectively, stator is made as the two-phase winding type.
Claims (4)
1. a brshless DC motor comprises rotor and stator, it is characterized in that: this stator periphery is coated with insulating barrier; Radially be provided with two-layer permanent magnetic strip arranged in a crossed manner on this rotor, the internal layer permanent magnetic strip is made as arc, this arc be centered close to slit between the outer adjacent permanent magnetic strip.
2. brshless DC motor as claimed in claim 1, it is characterized in that: this skin permanent magnetic strip is made as arc, and the center overlaps with rotor.
3. brshless DC motor as claimed in claim 2 is characterized in that: this skin permanent magnetic strip is interior thickness greater than two ends.
4. fluid pump as claimed in claim 1, it is characterized in that: this stator is made as the two-phase winding type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104200652A CN103001338A (en) | 2012-10-29 | 2012-10-29 | Brushless direct-current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104200652A CN103001338A (en) | 2012-10-29 | 2012-10-29 | Brushless direct-current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103001338A true CN103001338A (en) | 2013-03-27 |
Family
ID=47929598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104200652A Pending CN103001338A (en) | 2012-10-29 | 2012-10-29 | Brushless direct-current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103001338A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000125525A (en) * | 1998-10-15 | 2000-04-28 | Denso Corp | Driver for vehicle |
| JP2006217771A (en) * | 2005-02-07 | 2006-08-17 | Oita Univ | Permanent magnet movable electric machine |
| CN200990525Y (en) * | 2006-11-28 | 2007-12-12 | 许晓华 | Magnetic shoe for low-speed electric machine |
| CN201556991U (en) * | 2009-12-08 | 2010-08-18 | 中山大洋电机股份有限公司 | A plastic motor |
-
2012
- 2012-10-29 CN CN2012104200652A patent/CN103001338A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000125525A (en) * | 1998-10-15 | 2000-04-28 | Denso Corp | Driver for vehicle |
| JP2006217771A (en) * | 2005-02-07 | 2006-08-17 | Oita Univ | Permanent magnet movable electric machine |
| CN200990525Y (en) * | 2006-11-28 | 2007-12-12 | 许晓华 | Magnetic shoe for low-speed electric machine |
| CN201556991U (en) * | 2009-12-08 | 2010-08-18 | 中山大洋电机股份有限公司 | A plastic motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130327 |