CN102647068B - Permanent magnet DC motor - Google Patents
Permanent magnet DC motor Download PDFInfo
- Publication number
- CN102647068B CN102647068B CN201110040851.5A CN201110040851A CN102647068B CN 102647068 B CN102647068 B CN 102647068B CN 201110040851 A CN201110040851 A CN 201110040851A CN 102647068 B CN102647068 B CN 102647068B
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- pair
- stator
- shell
- 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.)
- Expired - Fee Related
Links
- 238000004804 winding Methods 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 229910052799 carbon Inorganic materials 0.000 claims description 14
- 230000004323 axial length Effects 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910000529 magnetic ferrite Inorganic materials 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- QEFYFXOXNSNQGX-UHFFFAOYSA-N Neodymium Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims 1
- 229910052779 Neodymium Inorganic materials 0.000 claims 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims 1
- 229910052796 boron Inorganic materials 0.000 claims 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 neodymium-iron-boron Chemical compound 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
The embodiment of the present invention provides a kind of permanent magnet DC motor, including stator and can the rotor that rotates of relative stator in being installed on stator；Wherein, described rotor includes rotating shaft, the rotor core being fixed in rotating shaft and diverter and winding, and described rotor turns core and has some teeth, forms wire casing between adjacent teeth, and described winding is wound on described some teeth and electrically connects with the commutator segment of diverter；Described stator includes shell and the permanent magnet being installed in shell；Described shell has cylindrical shell, and described permanent magnet includes the annular magnet being fixed at the inwall of described housing.The motor of the embodiment of the present invention has the advantages such as vibration is little, noise is low.
Description
Technical field
The present invention relates to a kind of permanent magnet DC motor, be particularly suited for driving window regulator device.
Background technology
Traditional permanent magnet DC motor includes stator and be installed in stator can the rotor that rotates of relative stator；Wherein, turn
Attached bag includes rotating shaft, rotor core, diverter and winding, rotor core and diverter and is each attached in rotating shaft, and rotor core has
Some teeth, form wire casing between adjacent teeth, winding is wound on tooth and electrically connects with the commutator segment of diverter；Stator includes square
Shell and be installed in the permanent magnet of outer casing inner wall.
It is desirable to provide a kind of novel permanent magnet DC motor.
Summary of the invention
The present invention provides a kind of permanent magnet DC motor, including stator and can turning of rotating of relative stator in being installed on stator
Son；Wherein, described rotor includes rotating shaft, the rotor core being fixed in rotating shaft and diverter and winding, and described rotor turns core tool
Having some teeth, form wire casing between adjacent teeth, described winding is wound on described some teeth and is electrically connected with the commutator segment of diverter
Connect；Described stator includes shell and the permanent magnet being installed in shell；Wherein, described shell has a cylindrical shell, described forever
Magnet includes the annular magnet being fixed at the inwall of described housing.
It is also preferred that the left described annular magnet has the magnetic pole of 4 the most circumferentially alternating distributions of N, S, each magnetic pole is substantially in 90
Degree.
It is also preferred that the left described annular magnet is made up of ferrite or Agglutinate neodymium-iron-boron.
It is also preferred that the left described annular magnet has the magnetic pole of 4 the most circumferentially alternating distributions of N, S, described rotor core has
10 wire casings, described diverter has 10 commutator segments.
It is also preferred that the left the ratio of the axial length of rotor core 32 and its length of pole arc is in 1.27～2.31；The footpath of housing 21a
To the ratio of thickness and its external diameter in 0.045～0.062；The ratio of the radial thickness of annular magnet and its external diameter is 0.07～0.11
In；The ratio of the radial thickness of annular magnet and the radial thickness of housing 21a is in 1～2.14；The axial length of housing 21a and its
The ratio of external diameter is in 1.21～1.71.
It is also preferred that the left described stator also includes the two end cap being fixed on shell two ends, wherein an end cap is equiped with at least one pair of
Brush and the commutator segment CONTACT WITH FRICTION of described diverter, described shell and two end cap form a closed structure.
In illustrated embodiment of the present invention, stator uses annular magnet, can improve stator natural frequency, reduces Oscillation Amplitude；
Owing to Magnet is fixed in cylinder shell inwall, compared with square shell, hull shape is more uniform, therefore can reduce motor
Noise；Stator is configured to a closed structure and can prevent interior noise from diffusing out；Additionally, the wire casing of rotor core is relative to turning
When axle is inclined, electromagnetism harmonic wave can be reduced, reduce vibration.To sum up, to have that vibration is little, noise is low etc. excellent for the embodiment of the present invention
Point.
In order to be able to be further understood that inventive feature and technology contents, refer to below in connection with the present invention is detailed
Illustrate and accompanying drawing, but institute's accompanying drawing only provides reference and explanation use, be not used for the present invention is any limitation as.
Accompanying drawing explanation
In accompanying drawing:
Fig. 1 is the axonometric chart of the permanent magnet DC motor of one embodiment of the invention；
Fig. 2 is a kind of plane graph of described motor, and wherein an end cap is removed；
Fig. 3 is another perspective representation of described motor, and its housing and end cap are removed；
Fig. 4 is the axonometric chart of the motor of another embodiment of the present invention；
Fig. 5 illustrates carbon brush and the carbon brush track-type facilities of motor in Fig. 4.
Detailed description of the invention
Below in conjunction with the accompanying drawings, by the detailed description of the invention of the present invention is described in detail, technical scheme will be made
And other beneficial effects are apparent.
Referring to Fig. 1 to Fig. 3, the permanent magnet DC motor 100 of one embodiment of the invention includes stator and is installed in stator
Can be relative to the rotor of stator rotation.
Rotor includes rotating shaft 31, rotor core 32, diverter 33 and winding (not marking in figure).Wherein, rotor core 32
Being each attached in rotating shaft 31 with diverter 33, rotor core 32 has some teeth 34 to be wound around winding, forms line between adjacent teeth
Groove, in winding is contained in wire casing and electrically connects with the commutator segment of diverter 33.In the present embodiment, rotor core 32 has 10 lines
Groove, diverter 32 has 10 commutator segments.
Stator includes iron shell 21, be installed in shell 21 permanent magnet 22 and the end cap being fixed on shell 21 two ends
23 and 24.Bearing 26 it is equiped with respectively for supporting rotating shaft 31 in end cap 23 and 24.In the present embodiment, shell 21 includes that two ends have
The cylindrical shell 21a having opening and the installation portion 21b extended radially outward from housing 21a one end.End cap 24 and housing 21a
One-body molded to reduce the height of motor, and close the housing 21a opening adjacent to end cap 24 one end.Outside end cap 23 is fixedly installed in
Shell 21 also forms tight fit with housing 21a, and diverter 33 is contained in end cap 23.The sidewall of end cap 23 is provided with at least one pair of radially
The through hole extended, at least one pair of brush pipe 25 is installed at least one pair of through hole described, and carbon brush (not shown) is slidably
Be installed in brush pipe 25 for the commutator segment CONTACT WITH FRICTION with diverter 33.Thus, stator can form a closed structure with resistance
Gear interior noise diffuses out.Permanent magnet 22 includes the inwall that is fixed at housing 21a and is oppositely arranged with rotor core
Annular magnet.Described annular magnet forms 4 magnetic poles of the most circumferentially alternating distribution of N, S, and each magnetic pole is substantially in 90 degree.Described
Annular magnet can be to be made into integration, it is possible to is made up of 4 pieces of Magnet splicings.Described annular magnet such as can be solid by binding agent
Inwall due to housing 21a, it is preferred that permanent magnet is made up of Ferrite Material, as an alternative, it is possible to by Agglutinate neodymium-iron-boron
(bonded NdFeB) material is made.
It is also preferred that the left the ratio of the axial length of rotor core 32 and its length of pole arc is in 1.27～2.31；The footpath of housing 21a
To the ratio of thickness and its external diameter in 0.045～0.062；The ratio of the radial thickness of annular magnet and its external diameter is 0.07～0.11
In；The ratio of the radial thickness of annular magnet and the radial thickness of housing 21a is in 1～2.14；The axial length of housing 21a and its
The ratio of external diameter is in 1.21～1.71.Wherein, the length of pole arc of rotor core 32 refers to the rotor ferrum corresponding to each magnetic pole of the stator
The circumferential arc length of core.
It is also preferred that the left the skew slot factor of the wire casing of rotor core 32 is in 0～1 times of groove width.When skew slot factor is more than 0 times of groove width
Time, the wire casing of rotor core 32 is inclined relative to rotating shaft 31, can reduce electromagnetism harmonic wave, reduces vibration.
Fig. 4 to Fig. 5 illustrates the permanent magnet DC motor 200 of another embodiment of the present invention, compared with motor 100, motor 200
At least one pair of carbon brush track-type facilities 25 ' is fixed at least one pair of through hole that the sidewall of end cap 23 is offered, an elastic machine
Carbon brush 27 is fixed in one end of structure 28, and the other end is fixed on the support column 23a being located at end cap 23；Carbon brush 27 is at elastic mechanism 28
Carbon brush track-type facilities 25 ' it is installed in slidably under resilient support, and in the drawing of pair of guide rails 25 ' a of carbon brush track-type facilities 25 '
Lead down the commutator segment CONTACT WITH FRICTION with diverter 33.
The motor of the embodiment of the present invention is particularly suited for driving window regulator device, is of course not solely limited to this, such as also
Other have in the application of low noise requirement to can be used for handheld blender etc..
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (12)
1. a permanent magnet DC motor, including stator be installed in stator can the rotor that rotates of relative stator；Wherein, described turn
Attached bag includes rotating shaft, the rotor core being fixed in rotating shaft and diverter and winding, and described rotor core has some teeth, adjacent
Forming wire casing between tooth, described winding is wound on described some teeth and electrically connects with the commutator segment of diverter；Described stator bag
Include shell and the permanent magnet being installed in shell；It is characterized in that, described shell has cylindrical shell, described permanent magnet bag
Include the annular magnet of the inwall being fixed at described housing, described stator includes being fixed on described shell and its sidewall be provided with to
Few end cap extending radially through hole for a pair, at least one pair of brush pipe be fixed at respectively described at least one pair of extend radially through in hole, extremely
Few a pair carbon brush is installed at least one pair of brush pipe described slidably, and at least one pair of carbon brush described can radially be slided respectively
It is arranged in the pair of commutator segment CONTACT WITH FRICTION extended radially through in hole with described diverter dynamicly.
Permanent magnet DC motor the most according to claim 1, it is characterised in that described annular magnet has 4 N, S poles along week
To alternatively distributed magnetic pole, each magnetic pole is substantially in 90 degree.
Permanent magnet DC motor the most according to claim 1, it is characterised in that described annular magnet is by ferrite or bonding neodymium
Ferrum boron is made.
Permanent magnet DC motor the most according to claim 1, it is characterised in that described annular magnet has 4 N, S poles along week
To alternatively distributed magnetic pole, described rotor core has 10 wire casings, and described diverter has 10 commutator segments.
Permanent magnet DC motor the most according to claim 1, it is characterised in that the axial length of rotor core is long with its polar arc
The ratio of degree is in 1.27～2.31.
Permanent magnet DC motor the most according to claim 1, it is characterised in that the radial thickness of described housing and its external diameter it
Ratio is in 0.045～0.062.
Permanent magnet DC motor the most according to claim 1, it is characterised in that outside the radial thickness of described annular magnet is with it
The ratio in footpath is in 0.07～0.11.
Permanent magnet DC motor the most according to claim 1, it is characterised in that the radial thickness of described annular magnet and housing
The ratio of radial thickness in 1～2.14.
Permanent magnet DC motor the most according to claim 1, it is characterised in that the axial length of described housing and its external diameter it
Ratio is in 1.21～1.71.
Permanent magnet DC motor the most according to claim 1, it is characterised in that the skewed slot system of the wire casing of described rotor core
Number is in 0～1 times of groove width.
11. permanent magnet DC motors according to claim 1, it is characterised in that described stator also includes being fixed on shell two
The two end cap of end, wherein an end cap is equiped with the commutator segment CONTACT WITH FRICTION of at least one pair of brush and described diverter, described shell
And two end cap forms a closed structure.
12. 1 kinds of permanent magnet DC motors, including stator be installed in stator can the rotor that rotates of relative stator；Wherein, described
Rotor includes rotating shaft, the rotor core being fixed in rotating shaft and diverter and winding, and described rotor turns core and has some teeth, phase
Forming wire casing between adjacent tooth, described winding is wound on described some teeth and electrically connects with the commutator segment of diverter；Described stator
Including shell and the permanent magnet that is installed in shell；It is characterized in that, described shell has cylindrical shell, described permanent magnet
Including the annular magnet of the inwall being fixed at described housing, described stator includes being fixed on described shell and its sidewall is provided with
At least one pair of extends radially through the end cap in hole, at least one pair of carbon brush track-type facilities be fixed at described at least one pair of extend radially through hole
In, at least one pair of carbon brush is installed at least one pair of carbon brush track-type facilities described slidably, and is arranged in the pair of footpath respectively
In through hole respectively under the guiding of the pair of guide rails of carbon brush track-type facilities with the commutator segment CONTACT WITH FRICTION of diverter.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110040851.5A CN102647068B (en) | 2011-02-18 | Permanent magnet DC motor | |
| DE201210101139 DE102012101139A1 (en) | 2011-02-18 | 2012-02-14 | Permanent magnet motor |
| US13/399,647 US9124152B2 (en) | 2011-02-18 | 2012-02-17 | Permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110040851.5A CN102647068B (en) | 2011-02-18 | Permanent magnet DC motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102647068A CN102647068A (en) | 2012-08-22 |
| CN102647068B true CN102647068B (en) | 2016-12-14 |
Family
ID=
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101208849A (en) * | 2005-06-21 | 2008-06-25 | 三菱电机株式会社 | Armature of rotary motor, rotary motor and manufacturing method thereof |
| CN201130875Y (en) * | 2007-12-26 | 2008-10-08 | 刘汉忠 | Low-consumption D.C. permanent-magnet motor |
| CN101359863A (en) * | 2007-08-03 | 2009-02-04 | 德昌电机股份有限公司 | Electricity driving motor |
| CN101807840A (en) * | 2009-02-13 | 2010-08-18 | 德昌电机(深圳)有限公司 | Permanent-magnet DC brush motor |
| CN101820204A (en) * | 2009-02-27 | 2010-09-01 | 德昌电机(深圳)有限公司 | Rail carbon brush device of brush motor |
| CN201956861U (en) * | 2011-02-18 | 2011-08-31 | 德昌电机(深圳)有限公司 | Permanent magnet DC (direct current) motor |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101208849A (en) * | 2005-06-21 | 2008-06-25 | 三菱电机株式会社 | Armature of rotary motor, rotary motor and manufacturing method thereof |
| CN101359863A (en) * | 2007-08-03 | 2009-02-04 | 德昌电机股份有限公司 | Electricity driving motor |
| CN201130875Y (en) * | 2007-12-26 | 2008-10-08 | 刘汉忠 | Low-consumption D.C. permanent-magnet motor |
| CN101807840A (en) * | 2009-02-13 | 2010-08-18 | 德昌电机(深圳)有限公司 | Permanent-magnet DC brush motor |
| CN101820204A (en) * | 2009-02-27 | 2010-09-01 | 德昌电机(深圳)有限公司 | Rail carbon brush device of brush motor |
| CN201956861U (en) * | 2011-02-18 | 2011-08-31 | 德昌电机(深圳)有限公司 | Permanent magnet DC (direct current) motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161214 Termination date: 20200218 |