CN103840634A - Moving magnet type linear oscillation motor without inner stator - Google Patents
Moving magnet type linear oscillation motor without inner stator Download PDFInfo
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- CN103840634A CN103840634A CN201410090305.6A CN201410090305A CN103840634A CN 103840634 A CN103840634 A CN 103840634A CN 201410090305 A CN201410090305 A CN 201410090305A CN 103840634 A CN103840634 A CN 103840634A
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Abstract
The invention discloses a moving magnet type linear oscillation motor without an inner stator. The moving magnet type linear oscillation motor without the inner stator comprises stator cores and a permanent magnet arranged inside the machine shell, wherein the stator cores are C type cores, the upper tooth part and the lower tooth part of each C type stator core form an N pole and an S pole respectively after an armature winding is arranged, the permanent magnet is arranged between the two stator cores, tooth parts of the two stator cores right face each other, the N pole and the S pole of the two stator cores are opposite, the two poles of the permanent magnet right face the upper tooth parts of the two stator cores and the lower tooth parts of the two stator cores respectively.
Description
Technical field
The invention belongs to linear electric motors field, is a kind of linear vibration motor with permanent magnet specifically.
Background technology
Conventional art adopts the transmission mechanisms such as crank and leading screw to convert rotatablely moving of electric rotating machine to straight reciprocating motion, has the problems such as the low and Mechanical Reliability of complex structure, efficiency is poor.Adopt linear vibration motor to realize straight reciprocating motion and can save transmission mechanism, reduce frictional dissipation, improve system effectiveness and reliability.
Linear vibration motor comprises moving-magnetic linear vibration motor, moving-coil type linear vibration motor and moving-iron linear oscillation motor.Wherein, moving-magnetic linear vibration motor is a kind of linear vibration motor as mover by permanent magnetic material, the alternating magnetic field interaction that the stationary magnetic field that permanent magnetic material produces and magnet exciting coil produce promotes permanent magnetic material and does reciprocal alternating movement, than adopting magnet exciting coil as the moving-coil type linear vibration motor of mover and adopting the moving-iron linear oscillation motor of iron core as mover, its mover quality is less, thrust is larger, and efficiency is higher.Along with the development of novel permanent magnetic material, the advantage of moving-magnetic linear vibration motor is further obvious.
The people such as Beale and Redlich of the U.S. in 1992 has developed the moving-magnetic linear vibration motor of Redlich type structure, 2003, LG company improves on the basis of this structure, has realized first the commercialization of moving-magnetic linear vibration motor driving Linearkompressor.This columnar structured moving magnetic linear vibration motor is, on the circumference of magnet exciting coil, permeability magnetic material is installed, and forms the magnetic structure of the cylindrical air gap concentric with magnet exciting coil, and the cylindrical permanent-magnet body of radial magnetizing moves reciprocatingly in air gap.
Application number is that 200880001914 patent discloses a kind of line motor for linear compressor, comprise internal stator, outer stator, the mover of multiple permanent magnet compositions, described internal stator makes its insulated from each other formation by circumferencial direction stacked core piece, outer stator is by along the circumferential direction arranging iron core piece and forming around described iron core piece coiling coil with predetermined space, described permanent magnet is arranged between described internal stator and described outer stator with predetermined gap and interacts and along straight reciprocating motion, its structure and core lamination stack are more complicated, difficult in maintenance.
Traditional moving-magnetic linear vibration motor, needs internal stator to form closed magnetic circuit, and internal stator is radiation profiles on circumference, thus have that internal stator closed assembly difficulty is large, processing difficulties and the shortcoming such as processing cost is higher, machine volume is large.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of moving-magnetic type simple in structure without internal stator linear vibration motor.
In order to solve the problems of the technologies described above, the invention provides a kind of moving-magnetic type without internal stator linear vibration motor, comprise the stator core and the permanent magnet that are arranged in casing; Described stator core is C shaped iron core; The upper tooth portion of the stator core of described C type and lower toothed portion do not form the N utmost point and the S utmost point after armature winding is set; Described two tooth portions are just to arranging permanent magnet between, the N utmost point stator core extremely contrary with S; The two poles of the earth of described the permanent magnet just upper tooth portion to two stator cores and lower tooth portion of two stator cores respectively.
As the improvement without internal stator linear vibration motor to moving-magnetic type of the present invention: described permanent magnet is tile shape; The outer circumference surface of described permanent magnet is relative with the upper tooth portion periphery of two stator cores respectively; The inner peripheral surface of described permanent magnet is relative with the lower tooth portion periphery of two stator cores respectively.
As the further improvement without internal stator linear vibration motor to moving-magnetic type of the present invention: described stator core is fixedly formed by ring-shaped winding support by least two little stator cores; On described armature winding support, armature winding is set; Described two tooth portions are just to forming single-phase winding after the armature winding series connection of, stator core that the N utmost point is extremely contrary with S.
As the further improvement without internal stator linear vibration motor to moving-magnetic type of the present invention: described permanent magnet is connected with the linear axis being parallel to each other by mover support; The two ends of described linear axis are slidably connected by linear ball bearing and casing respectively.
As the further improvement without internal stator linear vibration motor to moving-magnetic type of the present invention: be set with spring on described linear axis, the two ends of described spring prop up respectively two linear ball bearings.
As the further improvement without internal stator linear vibration motor to moving-magnetic type of the present invention: described ring-shaped winding frame is the ring-shaped winding frame that duroplasts material is made; Described mover support 2 is processed by non-magnetic non-conducting material.
The present invention has following beneficial effect:
1) compared with the prior art, moving-magnetic linear vibration motor of the present invention is without internal stator, more compact structure, and volume is less, and cost is lower.
2) solved the problem of internal stator closed assembly difficulty, actual difficulty of processing greatly reduces.
3) without internal stator, thereby leakage field is less, and the electromagnetic push that same current number of ampere turns obtains is larger, has improved internal stator radial distribution, tight inside but loose outside, unavoidably has the phenomenon of leakage field.
4) Fig. 6 is that electric current is the graph of a relation of 0 o'clock electromagnetic push and mover displacement, and X-axis is mover displacement, and Y-axis is electromagnetic push.As shown in Figure 6, in the time that electric current is 0, within the scope of mover effective travel, electromagnetic push is 0 substantially, illustrates that the reluctance force of this linear vibration motor is almost 0.
5) Fig. 7 is the graph of a relation of electromagnetic push and mover displacement and winding current, and X-axis is mover displacement, and Y-axis is electromagnetic push.As shown in Figure 7, in mover effective travel, when parameter is determined, electromagnetic push is only directly proportional to winding current, and electromagnetic push coefficient and mover displacement are irrelevant; In the time that winding current is constant, under different mover displacements, the suffered electromagnetic push of actuator is substantially constant, illustrates that the electromagnetic push controllability of moving-magnetic linear vibration motor of the present invention is good.
Brief description of the drawings
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is primary structure schematic diagram of the present invention;
Fig. 2 is that Fig. 1 passes into the principle schematic one the forward current I+ that flows into paper at left side armature winding 41 and right side armature winding 42;
Fig. 3 is that Fig. 1 passes into the principle schematic two the forward current I+ that flows into paper at left side armature winding 41 and right side armature winding 42;
Fig. 4 is that Fig. 1 passes into the principle schematic one the negative current I-that flows into paper at left side armature winding 41 and right side armature winding 42;
Fig. 5 is that Fig. 1 passes into the principle schematic two the negative current I-that flows into paper at left side armature winding 41 and right side armature winding 42;
Fig. 6 is that electric current is the relation of 0 o'clock electromagnetic push and displacement, and X-axis is mover displacement, and Y-axis is electromagnetic push;
Fig. 7 is the relation of electromagnetic push and mover displacement and winding current, and X-axis is mover displacement, and Y-axis is electromagnetic push.
Embodiment
Stator is propped up and is configured to by stator core, armature winding and ring-shaped winding; Stator core is divided into the left side stator core 31 and the right side stator core 32 that are symmetrically set; Left side stator core 31 and right side stator core 32 are " C " type stator core, and the breach of left side stator core 31 faces the breach of right side stator core 32; The left side ring-shaped winding support that left side stator core 31 is processed by hard plastic is by assembled several little stator core pieces; Left side armature winding 41 is set on the ring-shaped winding support of left side; The right side ring-shaped winding support that right side stator core 32 is processed by hard plastic is by assembled several little stator core pieces; Right side armature winding 42(left side armature winding 41 and right side armature winding 42 are set on the ring-shaped winding support of right side for mutually oppositely arranging, form mutually opposite electrode); Left side armature winding 41 forms single-phase winding after connecting with right side armature winding 42.
Mover is made up of permanent magnet 1, mover support 2 and linear axis 5; Permanent magnet 1 is tile shape permanent magnet, and the outer circumference surface of permanent magnet 1 is the N utmost point, and the inner peripheral surface of permanent magnet 1 is the S utmost point; The outer circumference surface of permanent magnet 1 respectively with the 33(of tooth portion left side stator core 31 on left stator core) periphery and right stator core on the 34(of tooth portion right side stator core 32) periphery relative; The inner peripheral surface of permanent magnet 1 respectively with the left stator core lower tooth 35(of portion left side stator core 31) periphery and the right stator core lower tooth 36(of portion right side stator core 32) periphery relative;
When actual use (left side armature winding 41 passes into single-phase alternating current with right side armature winding 42), step is as follows:
1, left side armature winding 41 passes into right side armature winding 42 the forward current I+ that flows into paper;
By left side armature winding 41, on the left stator core of left side stator core 31, tooth portion 33 forms the N utmost point, forms the S utmost point in the left stator core lower tooth portion 35 of left side stator core 31;
By right side armature winding 42, on the right stator core of right side stator core 32, tooth portion 34 forms the S utmost point, forms the N utmost point in the right stator core lower tooth portion 36 of right side stator core 32;
As shown in Figure 2;
2, now, permanent magnet 1 is because outer circumference surface is the N utmost point, and the inner peripheral surface of permanent magnet 1 is the S utmost point, so the left side of permanent magnet 1 is subject to repulsion, and the right side of permanent magnet 1 is subject to suction; Permanent magnet 1 moves from left to right;
As shown in Figure 3;
3, drive mover support 2 motion from left to right by the motion of permanent magnet 1, then drive linear axis 5 to move from left to right along the linear ball bearing 7 at left and right two ends by mover support 2;
In the process of 4, moving from left to right along the linear ball bearing 7 at left and right two ends at linear axis 5, mover support 2 is compressed to the spring 6 between the linear ball bearing 7 on right side, and mover support 2 is stretched to the spring 6 between the linear ball bearing 7 in left side;
5, left side armature winding 41 passes into right side armature winding 42 the negative current I-that flows out paper;
By left side armature winding 41, on the left stator core of left side stator core 31, tooth portion 33 forms the S utmost point, forms the N utmost point in the left stator core lower tooth portion 35 of left side stator core 31;
By right side armature winding 42, on the right stator core of right side stator core 32, tooth portion 34 forms the N utmost point, forms the S utmost point in the right stator core lower tooth portion 36 of right side stator core 32;
As shown in Figure 4;
6, now, permanent magnet 1 is because outer circumference surface is the N utmost point, and the inner peripheral surface of permanent magnet 1 is the S utmost point, so the right side of permanent magnet 1 is subject to repulsion, and the left side of permanent magnet 1 is subject to suction; Permanent magnet 1 moves from right to left;
As shown in Figure 5;
7, drive mover support 2 motion from right to left by the motion of permanent magnet 1, then drive linear axis 5 to move from right to left along the linear ball bearing 7 at left and right two ends by mover support 2;
In the process of 8, moving from right to left along the linear ball bearing 7 at left and right two ends at linear axis 5, mover support 2 is compressed to the spring 6 between the linear ball bearing 7 in left side, and mover support 2 is stretched to the spring 6 between the linear ball bearing 7 on right side;
By passing into the continuous positive and negative alternation of electric current in armature winding, make the positive and negative alternation of electromagnetic push on stator core, do linear reciprocating motion thereby promote mover.Above-described spring 6 is the left and right linear reciprocating motion of auxiliary straight line axle 5.Be equipped with regulator, just can control the amplitude of linear axis 5 reciprocating vibrations, be equipped with converter plant and just can control the frequency of linear axis 5 reciprocating vibrations.
The present invention compared with the prior art, due to without internal stator, make more compact structure, volume is less, cost is lower, and due to without closed assembly internal stator, difficulty of processing is significantly reduced, and leakage field is less, the electromagnetic push that same current number of ampere turns obtains is larger, improve internal stator radial distribution, tight inside but loose outside, unavoidably there is the phenomenon of leakage field.
Fig. 6 is that electric current is the graph of a relation of 0 o'clock electromagnetic push and mover displacement, and X-axis is mover displacement, and Y-axis is electromagnetic push.As shown in Figure 6, in the time that electric current is 0, within the scope of mover effective travel, electromagnetic push is 0 substantially, illustrates that the reluctance force of this linear vibration motor is almost 0.
Fig. 7 is the graph of a relation of electromagnetic push and mover displacement and winding current, and X-axis is mover displacement, and Y-axis is electromagnetic push.As shown in Figure 7, in mover effective travel, when parameter is determined, electromagnetic push is only directly proportional to winding current, and electromagnetic push coefficient and mover displacement are irrelevant; In the time that winding current is constant, under different mover displacements, the suffered electromagnetic push of actuator is substantially constant, illustrates that the electromagnetic push controllability of moving-magnetic linear vibration motor of the present invention is good.
Finally, it is also to be noted that, what more than enumerate is only a specific embodiment of the present invention.Obviously, the invention is not restricted to above embodiment, can also have many distortion.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention, all should think protection scope of the present invention.
Claims (6)
1. moving-magnetic type, without internal stator linear vibration motor, comprises the stator core and the permanent magnet that are arranged in casing; It is characterized in that: described stator core is C shaped iron core;
The upper tooth portion of the stator core of described C type and lower toothed portion do not form the N utmost point and the S utmost point after armature winding is set;
Described two tooth portions are just to arranging permanent magnet between, the N utmost point stator core extremely contrary with S;
The two poles of the earth of described the permanent magnet just upper tooth portion to two stator cores and lower tooth portion of two stator cores respectively.
2. moving-magnetic type according to claim 1, without internal stator linear vibration motor, is characterized in that: described permanent magnet is tile shape;
The outer circumference surface of described permanent magnet is relative with the upper tooth portion periphery of two stator cores respectively;
The inner peripheral surface of described permanent magnet is relative with the lower tooth portion periphery of two stator cores respectively.
3. moving-magnetic type according to claim 2, without internal stator linear vibration motor, is characterized in that: described stator core is fixedly formed by ring-shaped winding support by least two little stator cores;
Described armature winding is fixed on stator core by armature winding support;
Described two tooth portions are just to forming single-phase winding after the armature winding series connection of, stator core that the N utmost point is extremely contrary with S.
4. moving-magnetic type according to claim 3, without internal stator linear vibration motor, is characterized in that: described permanent magnet is connected with the linear axis being parallel to each other by mover support;
The two ends of described linear axis are slidably connected by linear ball bearing and casing respectively.
5. moving-magnetic type according to claim 4, without internal stator linear vibration motor, is characterized in that: on described linear axis, be set with spring, the two ends of described spring prop up respectively two linear ball bearings.
6. moving-magnetic type according to claim 5, without internal stator linear vibration motor, is characterized in that: described ring-shaped winding frame is the ring-shaped winding frame that duroplasts material is made;
Described mover support is processed by non-magnetic, non-conducting material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410090305.6A CN103840634A (en) | 2014-03-12 | 2014-03-12 | Moving magnet type linear oscillation motor without inner stator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410090305.6A CN103840634A (en) | 2014-03-12 | 2014-03-12 | Moving magnet type linear oscillation motor without inner stator |
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| CN103840634A true CN103840634A (en) | 2014-06-04 |
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| CN201410090305.6A Pending CN103840634A (en) | 2014-03-12 | 2014-03-12 | Moving magnet type linear oscillation motor without inner stator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451991A (en) * | 2016-10-08 | 2017-02-22 | 华中科技大学 | Stator permanent magnet movable iron core type linear oscillation motor |
| CN107733201A (en) * | 2017-11-23 | 2018-02-23 | 浙江大学常州工业技术研究院 | Moving-magnetic linear vibration motor and linear compressor |
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| GB227849A (en) * | 1924-01-16 | 1925-11-12 | Nicolas Japolsky | An improved electromagnetic percussive tool |
| JP2000236653A (en) * | 1999-02-15 | 2000-08-29 | Sanyo Electric Co Ltd | Linear motor stator and method of manufacturing the same |
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| CN201705609U (en) * | 2010-05-21 | 2011-01-12 | 浙江井田机电股份有限公司 | Moving-magnetic type directly-driven compressor |
| CN102684445A (en) * | 2011-03-07 | 2012-09-19 | 德昌电机(深圳)有限公司 | Electric cutting tool and driver of electric cutting tool |
| CN103595213A (en) * | 2013-11-20 | 2014-02-19 | 戴珊珊 | Alternating-current permanent-magnet switched reluctance drive |
| CN203734501U (en) * | 2014-03-12 | 2014-07-23 | 浙江理工大学 | Moving-magnet-type linear oscillation motor without internal stator |
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2014
- 2014-03-12 CN CN201410090305.6A patent/CN103840634A/en active Pending
Patent Citations (7)
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| GB227849A (en) * | 1924-01-16 | 1925-11-12 | Nicolas Japolsky | An improved electromagnetic percussive tool |
| JP2000236653A (en) * | 1999-02-15 | 2000-08-29 | Sanyo Electric Co Ltd | Linear motor stator and method of manufacturing the same |
| CN1334636A (en) * | 2000-07-18 | 2002-02-06 | 速睦喜股份有限公司 | Magnet moving type electromagnetic actuator |
| CN201705609U (en) * | 2010-05-21 | 2011-01-12 | 浙江井田机电股份有限公司 | Moving-magnetic type directly-driven compressor |
| CN102684445A (en) * | 2011-03-07 | 2012-09-19 | 德昌电机(深圳)有限公司 | Electric cutting tool and driver of electric cutting tool |
| CN103595213A (en) * | 2013-11-20 | 2014-02-19 | 戴珊珊 | Alternating-current permanent-magnet switched reluctance drive |
| CN203734501U (en) * | 2014-03-12 | 2014-07-23 | 浙江理工大学 | Moving-magnet-type linear oscillation motor without internal stator |
Non-Patent Citations (1)
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| 陈国邦: "《小型低温制冷机原理》", 31 January 2010, 科学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451991A (en) * | 2016-10-08 | 2017-02-22 | 华中科技大学 | Stator permanent magnet movable iron core type linear oscillation motor |
| CN106451991B (en) * | 2016-10-08 | 2020-06-05 | 华中科技大学 | A stator permanent magnet type moving iron core linear oscillating motor |
| CN107733201A (en) * | 2017-11-23 | 2018-02-23 | 浙江大学常州工业技术研究院 | Moving-magnetic linear vibration motor and linear compressor |
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Application publication date: 20140604 |