CN106160270A - A kind of VCM motor Magnet of improvement - Google Patents
A kind of VCM motor Magnet of improvement Download PDFInfo
- Publication number
- CN106160270A CN106160270A CN201610587826.1A CN201610587826A CN106160270A CN 106160270 A CN106160270 A CN 106160270A CN 201610587826 A CN201610587826 A CN 201610587826A CN 106160270 A CN106160270 A CN 106160270A
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- CN
- China
- Prior art keywords
- vcm motor
- motor magnet
- half portions
- vcm
- magnet
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Classifications
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- 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
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
Patent of the present invention relates to the VCM motor Magnet of a kind of improvement, is applied to a VCM motor, and described VCM motor Magnet is made up of the first half portions and the second half portions；Described the first half portions and the second half portions lay respectively at the field axis both sides of VCM motor Magnet, and the two ends of the coil movement trajectory respectively close to VCM motor；Described the first half portions and the second half portions are asymmetrical in shape；The magnetic line of force distribution that described the first half portions and the second half portions are formed is asymmetric.The VCM motor Magnet of the improvement of present invention offer is provided, can allow and be distributed in the magnetic line of force distribution density of diverse location in coil movement trajectory and direction changes, make coil more uniform in the magnetic field intensity suffered by different travel position further, reduce the thrust differential of different stroke, reach to improve the purpose of stroke linear degree.
Description
Technical field
Patent of the present invention relates to Magnet technical field, is specifically related to the VCM motor Magnet of a kind of improvement.
Background technology
VCM i.e. Voice Coil Motor, is commonly called as voice coil motor or voice coil motor, be utilize Magnet and coil electricity after
The magnetic field interaction produced produces electromagnetic force, thus controls the motion of the carrier being fixed together with coil.At present, mobile phone,
The photographic head of apparatus such as computer is widely used VCM and realizes automatic focusing function, and its principle is that camera lens and coil are fixed on one
On carrier, carrier is driven to regulate the position of camera lens by electromagnetic force, it is achieved the zoom function of camera lens.Technology along with photographic head
The most ripe, while all types of photographic head product whole heights declines, demand stroke increases again, traditional VCM motor Magnet
Cannot intactly contain coil in the range of stroke, and coil is different with the magnetic field intensity suffered by end at stroke top,
Thrust differential is big so that product stroke poor linearity.
In traditional VCM motor, due to Magnet, at coil movement locus line, (i.e. coil moves to end from stroke top
Trajectory) on magnetic line of force distribution density and the change in direction, the electricity that during coil electricity, diverse location is subject in the movement direction
Magnetic force varies in size.And VCM motor coil stroke realizes according to hooke theorem, therefore the stroke of coil is with coil current
Change be non-linear.
Patent of invention content
In order to improve coil concordance of the electromagnetic force that diverse location is subject in its direction of motion, thus improve coil stroke with
The linearity of coil current change, patent of the present invention provides the VCM motor Magnet of a kind of improvement, is applied to a VCM motor, institute
State VCM motor Magnet to be made up of the first half portions and the second half portions；Described the first half portions and the second half portions lay respectively at VCM motor magnetic
The field axis both sides of ferrum, and the two ends of the coil movement trajectory respectively close to VCM motor；Described the first half portions and the second half
Portion is asymmetrical in shape；The magnetic line of force distribution that described the first half portions and the second half portions are formed is asymmetric.
Further, the end face that top end face is VCM motor Magnet in described the first half portions, the top end face in described the second half portions
Bottom surface for VCM motor Magnet；The end face of described VCM motor Magnet is different from the geomery of bottom surface.
Further, top surface area is base area 5%～the 90% of described VCM motor Magnet.
Further, the top margin of described VCM motor Magnet cross section is different from base length.
Further, described VCM motor Magnet cross section is trapezoidal.
Further, described VCM motor Magnet cross section is right-angled trapezium.
Further, described VCM motor Magnet cross section be three interior angles be the pentagon at right angle.
Further, the top margin of described VCM motor Magnet longitudinal section is different from base length.
Further, described VCM motor Magnet longitudinal section is trapezoidal.
Further, described VCM motor Magnet longitudinal section is right-angled trapezium.
Use the VCM motor Magnet of the improvement that patent of the present invention provides, can allow and be distributed in coil movement trajectory not
The magnetic line of force distribution density of co-located and direction change, and make coil in the magnetic field intensity suffered by different travel position further
More uniform, reduce the thrust differential of different stroke, reach to improve the purpose of stroke linear degree.
Accompanying drawing explanation
The VCM motor magnet embodiment schematic diagram of the improvement that Fig. 1 provides for patent of the present invention.
Another angle schematic diagram of the VCM motor magnet embodiment of the improvement that Fig. 2 provides for patent of the present invention.
The VCM motor magnet embodiment cross sectional representation of the improvement that Fig. 3 provides for patent of the present invention.
The VCM motor magnet embodiment Longitudinal cross section schematic of the improvement that Fig. 4 provides for patent of the present invention.
Another embodiment cross sectional representation of the VCM motor Magnet of the improvement that Fig. 5 provides for patent of the present invention.
Fig. 6 is the magnetic line of force distribution schematic diagram of traditional VCM motor Magnet.
Hot-wire coil stroke and the linearity relationship figure of electric current when Fig. 7 is to use traditional VCM motor Magnet.
The magnetic line of force distribution schematic diagram of the VCM motor Magnet of the improvement that Fig. 8 provides for patent of the present invention.
Hot-wire coil stroke and the linearity relationship of electric current during the VCM motor Magnet that Fig. 9 provides for using patent of the present invention
Figure.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, patent of the present invention is described in further detail.
The embodiment of the VCM motor Magnet of improvement as shown in Figure 1, 2, the first half portions 11 and second of VCM motor Magnet 1
Half portion 12 lays respectively at field axis 13 both sides of VCM motor Magnet, and respectively close to the coil movement trajectory 14 of VCM motor
Two ends, i.e. the top of coil stroke and end, the shape in the first half portions 11 and the second half portions 12 is the most right with magnetic line of force distribution
Claiming, the end face that top end face is VCM motor Magnet 1 15 in the first half portions 11, the top end face in the second half portions 12 is VCM motor Magnet 1
Bottom surface 16, end face 15 is different from the geomery of bottom surface 16, and the area of end face 15 is the 80% of bottom surface 16 area.VCM motor magnetic
The cross section of ferrum 1 is right-angled trapezium, as shown in Figure 3；The longitudinal section of VCM motor Magnet 1 is isosceles trapezoid, as shown in Figure 4.
As another preferred embodiment, VCM motor Magnet 1 is strip, and its end face 14 area is bottom surface 15 area
90%, its cross section be three interior angles as shown in Figure 5 be the pentagon at right angle.
Fig. 6 is the magnetic line of force distribution schematic diagram of traditional VCM motor Magnet, when the coil 2 of energising is at VCM motor Magnet 1
In the magnetic field formed when moving, through coil 2 density of line of magnetic force and direction also changing therewith, the thrust that coil 2 is subject to
Change the most therewith.Fig. 7 show and uses hot-wire coil stroke and the linearity relationship of electric current in traditional VCM motor Magnet, its
Actual curve is with ideal curve as shown in the figure.The magnetic line of force distribution of the VCM motor Magnet of the improvement that Fig. 8 provides for patent of the present invention
Schematic diagram, in the stroke of coil 2, the distribution of VCM motor Magnet 1 magnetic line of force is the most uniform.It is special that Fig. 9 show the employing present invention
Hot-wire coil stroke and the linearity relationship of electric current, VCM motor Magnet corresponding positions when stroke is big during the VCM motor Magnet that profit provides
The geomery put reduces, and density of line of magnetic force diminishes, and the magnetic field force making coil be subject to reduces, and reduces pushing away between stroke size
Power difference, vice versa.Fig. 9 comparison diagram 7 can be seen that the linearity of stroke and the electric current using the VCM motor Magnet after improving
More preferably, actual curve when curve compares use tradition VCM motor Magnet after improvement is more nearly ideal curve.Use the present invention
The VCM motor Magnet of the improvement that patent provides, can allow the magnetic line of force being distributed in diverse location in coil movement trajectory be distributed
Density and direction change, and make coil more uniform in the magnetic field intensity suffered by different travel position further, reduce not
With the thrust differential of stroke, reach to improve the purpose of stroke linear degree.
Although the description of patent of the present invention being combined embodiments above carry out, but, it is familiar with the art
Personnel can carry out many replacement, modifications and variations according to above-mentioned content, be apparent from.Therefore, all such
Substitute, improve and change in the spirit and scope being included in appended claims.
Claims (10)
1. the VCM motor Magnet improved, is applied to a VCM motor, it is characterised in that described VCM motor Magnet is by first
Half portion and the second half composition；Described the first half portions and the second half portions lay respectively at the field axis both sides of VCM motor Magnet, and
Two ends respectively close to the coil movement trajectory of VCM motor；Described the first half portions and the second half portions are asymmetrical in shape；Described
The magnetic line of force distribution that the first half portions and the second half portions are formed is asymmetric.
The VCM motor Magnet improved the most according to claim 1, it is characterised in that the top end face in described the first half portions is VCM
The end face of motor magnet, the bottom surface that top end face is VCM motor Magnet in described the second half portions；The end face of described VCM motor Magnet
Different from the geomery of bottom surface.
The VCM motor Magnet of improvement the most according to claim 2, it is characterised in that the end face face of described VCM motor Magnet
Amass 5%～90% for base area.
The VCM motor Magnet improved the most according to claim 2, it is characterised in that the top of described VCM motor Magnet cross section
Limit is different from base length.
The VCM motor Magnet improved the most according to claim 4, it is characterised in that described VCM motor Magnet cross section is
Trapezoidal.
The VCM motor Magnet improved the most according to claim 5, it is characterised in that described VCM motor Magnet cross section is
Right-angled trapezium.
The VCM motor Magnet improved the most according to claim 4, it is characterised in that described VCM motor Magnet cross section is
Three interior angles are the pentagons at right angle.
8. according to the VCM motor Magnet of the arbitrary described improvement of claim 1 to 7, it is characterised in that described VCM motor Magnet is indulged
The top margin in cross section is different from base length.
The VCM motor Magnet improved the most according to claim 8, it is characterised in that described VCM motor Magnet longitudinal section is
Trapezoidal.
The VCM motor Magnet improved the most according to claim 9, it is characterised in that described VCM motor Magnet longitudinal section
For right-angled trapezium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610587826.1A CN106160270A (en) | 2016-07-25 | 2016-07-25 | A kind of VCM motor Magnet of improvement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610587826.1A CN106160270A (en) | 2016-07-25 | 2016-07-25 | A kind of VCM motor Magnet of improvement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106160270A true CN106160270A (en) | 2016-11-23 |
Family
ID=58059486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610587826.1A Pending CN106160270A (en) | 2016-07-25 | 2016-07-25 | A kind of VCM motor Magnet of improvement |
Country Status (1)
| Country | Link |
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| CN (1) | CN106160270A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113059250A (en) * | 2021-06-01 | 2021-07-02 | 广东阿达智能装备有限公司 | Wire bonding machine and bonding head structure thereof |
| US11269243B2 (en) | 2020-04-27 | 2022-03-08 | Coretronic Corporation | Optical module and projection device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185392A (en) * | 2011-04-22 | 2011-09-14 | 西安交通大学 | Magnetism-gathering disc type permanent magnet torque motor with fluid cooling function |
| JP2011188546A (en) * | 2010-03-04 | 2011-09-22 | Yaskawa Electric Corp | Voice coil motor |
| JP2012138141A (en) * | 2010-12-24 | 2012-07-19 | Nichia Chem Ind Ltd | Field unit, permanent magnet constituting the same, and method for manufacturing field unit |
| CN102780294A (en) * | 2012-08-22 | 2012-11-14 | 南车株洲电机有限公司 | Permanent magnet motor |
| CN103718438A (en) * | 2011-04-15 | 2014-04-09 | Pss比利时股份有限公司 | Magnetic motor system |
| CN204068442U (en) * | 2014-07-07 | 2014-12-31 | 宁波合盛磁业有限公司 | A kind of for the sintered NdFeB magnetic shoe in magneto |
| CN105006939A (en) * | 2014-04-16 | 2015-10-28 | 上海微电子装备有限公司 | Voice coil motor |
| CN105305764A (en) * | 2015-11-25 | 2016-02-03 | 歌尔声学股份有限公司 | Linear vibration motor |
| CN205811676U (en) * | 2016-07-25 | 2016-12-14 | 惠州市大亚湾永昶电子工业有限公司 | A kind of VCM motor Magnet of improvement |
-
2016
- 2016-07-25 CN CN201610587826.1A patent/CN106160270A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011188546A (en) * | 2010-03-04 | 2011-09-22 | Yaskawa Electric Corp | Voice coil motor |
| JP2012138141A (en) * | 2010-12-24 | 2012-07-19 | Nichia Chem Ind Ltd | Field unit, permanent magnet constituting the same, and method for manufacturing field unit |
| CN103718438A (en) * | 2011-04-15 | 2014-04-09 | Pss比利时股份有限公司 | Magnetic motor system |
| CN102185392A (en) * | 2011-04-22 | 2011-09-14 | 西安交通大学 | Magnetism-gathering disc type permanent magnet torque motor with fluid cooling function |
| CN102780294A (en) * | 2012-08-22 | 2012-11-14 | 南车株洲电机有限公司 | Permanent magnet motor |
| CN105006939A (en) * | 2014-04-16 | 2015-10-28 | 上海微电子装备有限公司 | Voice coil motor |
| CN204068442U (en) * | 2014-07-07 | 2014-12-31 | 宁波合盛磁业有限公司 | A kind of for the sintered NdFeB magnetic shoe in magneto |
| CN105305764A (en) * | 2015-11-25 | 2016-02-03 | 歌尔声学股份有限公司 | Linear vibration motor |
| CN205811676U (en) * | 2016-07-25 | 2016-12-14 | 惠州市大亚湾永昶电子工业有限公司 | A kind of VCM motor Magnet of improvement |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11269243B2 (en) | 2020-04-27 | 2022-03-08 | Coretronic Corporation | Optical module and projection device |
| CN113059250A (en) * | 2021-06-01 | 2021-07-02 | 广东阿达智能装备有限公司 | Wire bonding machine and bonding head structure thereof |
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Application publication date: 20161123 |