CN110518718A - Magnetic shoe and permanent magnet DC motor for motor - Google Patents
Magnetic shoe and permanent magnet DC motor for motor Download PDFInfo
- Publication number
- CN110518718A CN110518718A CN201910850424.XA CN201910850424A CN110518718A CN 110518718 A CN110518718 A CN 110518718A CN 201910850424 A CN201910850424 A CN 201910850424A CN 110518718 A CN110518718 A CN 110518718A
- Authority
- CN
- China
- Prior art keywords
- magnetic shoe
- motor
- chamfering
- arc surface
- permanent magnet
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
- H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
- H02K23/04—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Abstract
The invention discloses a kind of magnetic shoe and permanent magnet DC motor for motor, which is made of inner arc surface and exterior arc surface, the inner arc surface and the non-concentric setting of exterior arc surface and to meet thick middle, both sides thin, arranged symmetrically.The thickness of the magnetic shoe two edges is the 60 ~ 80% of center thickness.Four angles of the magnetic shoe are the chamfering A of straight line.The angle of the chamfering A is 30 ~ 60 degree.The height H1 of the chamfering A is the 1/5 ~ 1/4 of the magnetic shoe height H.Four angles of the magnetic shoe are the chamfering R of circular arc.A kind of permanent magnet DC motor, including the magnetic shoe for motor.The present invention small, small power consumption, beneficial effect high-efficient, with small vibration with noise.
Description
Technical field
The present invention relates to a kind of magnetic shoes and permanent magnet DC motor for motor.
Background technique
Magnetic shoe is important one of the part of motor, and existing magnetic shoe is as depicted in figs. 1 and 2, for more upright annulus block
1, the magnetic field that magnetic shoe is established in motor is closer to square wave, according to series in Fu, the square wave field of foundation can resolve into it is multistage just
String wave, according to design of electrical motor theory, only single order sine wave is synchronous with motor speed, generates torque, remaining sine wave is referred to as humorous
Wave does not generate torque not only, but generates the main source of motor electromagnetic noise, and therefore, existing motor is big with noise, consumes
Electric more, low efficiency.
Summary of the invention
The present invention is according to the above deficiency, provide a kind of magnetic shoe for motor.
The technical scheme is that
A kind of magnetic shoe for motor, the magnetic shoe are made of inner arc surface and exterior arc surface, and the inner arc surface and exterior arc surface are non-
It is thin, arranged symmetrically to be arranged concentrically and meet thick middle, both sides.
Relatively therefore sine wave is significantly better than the magnetic shoe of the prior art in the magnetic field that magnetic shoe of the present invention is set up.
Preferably, the thickness of the magnetic shoe two edges is the 60 ~ 80% of center thickness.
Further, four angles of the magnetic shoe are the chamfering A of straight line.
Preferably, the angle of the chamfering A is 30 ~ 60 degree.
Preferably, the height H1 of the chamfering A is the 1/5 ~ 1/4 of the magnetic shoe height H.
The processing of the chamfering of process, magnetic field distribution of the invention advanced optimize, and closer to sine wave, have slackened and have removed
Higher hamonic wave amplitude outside fundamental wave, to reduce electromagnetic noise and the vibration of motor.
As another preferred embodiment, four angles of the magnetic shoe are the chamfering R of circular arc.
A kind of permanent magnet DC motor, including the magnetic shoe for motor.
After actual measurement with motor produced by the present invention, 5 ~ 8dB of motor electromagnetic lower noise (A).
The present invention small, small power consumption, beneficial effect high-efficient, with small vibration with noise.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of prior art magnetic shoe.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is structural schematic diagram of the invention.
Fig. 4 is the top view of Fig. 3
Fig. 5 is circular arc chamfering structural schematic diagram of the present invention.
Specific embodiment
Now in conjunction with attached drawing, the present invention is further illustrated:
As shown, embodiment 1:
A kind of magnetic shoe for motor, the magnetic shoe 2 are made of inner arc surface and exterior arc surface, and the inner arc surface and exterior arc surface are non-
It is thin, arranged symmetrically to be arranged concentrically and meet thick middle, both sides.
The thickness of 2 two edges of magnetic shoe is the 60 ~ 80% of center thickness.
Four angles of magnetic shoe 2 are the chamfering A of straight line.
The angle of chamfering A is 30 ~ 60 degree.
The height H1 of chamfering A is the 1/5 ~ 1/4 of 2 height H of magnetic shoe.
Embodiment 2:
A kind of magnetic shoe for motor, the magnetic shoe 3 are made of inner arc surface and exterior arc surface, and the inner arc surface and exterior arc surface are non-
It is thin, arranged symmetrically to be arranged concentrically and meet thick middle, both sides.
The thickness of 3 two edges of magnetic shoe is the 60 ~ 80% of center thickness.
Four angles of magnetic shoe 3 are the chamfering R of circular arc.
Embodiment 3:
A kind of permanent magnet DC motor, including the magnetic shoe 2 described in embodiment 1 for motor.
Embodiment 4:
A kind of permanent magnet DC motor, including the magnetic shoe 3 as described in example 2 for motor.
Claims (7)
1. a kind of magnetic shoe for motor, the magnetic shoe are made of inner arc surface and exterior arc surface, characterized in that the inner arc surface and
The non-concentric setting of exterior arc surface and to meet thick middle, both sides thin, arranged symmetrically.
2. a kind of magnetic shoe for motor as described in claim 1, characterized in that the thickness of the magnetic shoe two edges is center
The 60 ~ 80% of thickness.
3. a kind of magnetic shoe for motor as claimed in claim 1 or 2, characterized in that four angles of the magnetic shoe are straight line
Chamfering A.
4. a kind of magnetic shoe for motor as claimed in claim 3, characterized in that the angle of the chamfering A is 30 ~ 60 degree.
5. a kind of magnetic shoe for motor as claimed in claim 4, characterized in that the height H1 of the chamfering A is the magnetic
The 1/5 ~ 1/4 of watt height H.
6. a kind of magnetic shoe for motor as claimed in claim 1 or 2, characterized in that four angles of the magnetic shoe are circular arc
Chamfering R.
7. a kind of permanent magnet DC motor, characterized in that including the magnetic shoe as claimed in any one of claims 1 to 6 for motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910850424.XA CN110518718A (en) | 2019-09-10 | 2019-09-10 | Magnetic shoe and permanent magnet DC motor for motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910850424.XA CN110518718A (en) | 2019-09-10 | 2019-09-10 | Magnetic shoe and permanent magnet DC motor for motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110518718A true CN110518718A (en) | 2019-11-29 |
Family
ID=68631758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910850424.XA Pending CN110518718A (en) | 2019-09-10 | 2019-09-10 | Magnetic shoe and permanent magnet DC motor for motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110518718A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380202A (en) * | 2020-03-23 | 2020-07-07 | 珠海格力电器股份有限公司 | Equipment noise reduction method and device and air purifier |
-
2019
- 2019-09-10 CN CN201910850424.XA patent/CN110518718A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380202A (en) * | 2020-03-23 | 2020-07-07 | 珠海格力电器股份有限公司 | Equipment noise reduction method and device and air purifier |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |