CN203708063U - Permanent-magnetism linear oscillation motor and electrical device - Google Patents

Permanent-magnetism linear oscillation motor and electrical device Download PDF

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Publication number
CN203708063U
CN203708063U CN201320793930.8U CN201320793930U CN203708063U CN 203708063 U CN203708063 U CN 203708063U CN 201320793930 U CN201320793930 U CN 201320793930U CN 203708063 U CN203708063 U CN 203708063U
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CN
China
Prior art keywords
coil
permanent magnet
linear vibration
vibration motor
iron core
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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.)
Withdrawn - After Issue
Application number
CN201320793930.8U
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Chinese (zh)
Inventor
陈进华
廖有用
张驰
金勤晓
罗宁
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Ningbo Institute of Material Technology and Engineering of CAS
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Ningbo Institute of Material Technology and Engineering of CAS
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Priority to CN201320793930.8U priority Critical patent/CN203708063U/en
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Abstract

The utility model provides a permanent-magnetism linear oscillation motor. The permanent magnetism linear oscillation motor comprises a mover portion and a stator portion; the mover portion comprises a shaft and a mover iron core, and the mover iron core is fixedly installed on the shaft. The stator portion comprises a primary iron core, a permanent magnet, a coil former, a first coil and a second coil, the primary iron core is provided with grooves used for accommodating the permanent magnet, the coil former, the first coil and the second coil, and the first coil and the second coil are symmetrically arranged on the coil former with regard to the permanent magnet. When the first coil and the second coil are powered on, a magnetic field is generated, and therefore the mover portion is driven to reciprocate along the axis direction of the shaft. The utility model also relates to an electrical device. In the permanent-magnetism linear oscillation motor and the electrical device, the mover portion is light in weight and fast in dynamic response, the permanent magnet is not liable to lose magnetism, and the motor can operates relatively reliably.

Description

Permanent magnet linear vibration motor and electrical equipment
Technical field
The utility model relates to vibration motor field, relates in particular to a kind of permanent magnet linear vibration motor and electrical equipment.
Background technology
Conventional art conventionally adopts the transmission mechanisms such as ball-screw, gear, crank to realize rotatablely moving of electric rotating machine and is converted to linear reciprocating motion, and transmission efficiency is low, Mechanical Reliability is low, difficult in maintenance etc.Adopt linear motor direct drive load to move reciprocatingly, reduced frictional dissipation, reduce the mechanical time constant of system, improved efficiency and the reliability of system.And linear vibration motor utilizes electromagnetic force to produce linear reciprocating motion, be generally used for electric toothbrush, air compressor, shaver, camera electromagnetic shutter, loud speaker, electric hammer machine, mixer, refrigerator, sewing machine, bag binding machine, electromagnetic pump etc.Divide from motion mode, have moving-iron type, moving-coil type, moving-magnetic type, moving-coil iron formula, moving-magnet etc.
Chinese patent ZL200610052853.5 discloses a kind of linear vibration motor, and its stator is the combined stator being composed in series by two stator shaft orientations, and winding is connected mutually, is fixed with the permanent magnetic steel of N, S utmost point alternative arrangement on mover periphery.When stator coil passes to alternating current, in coil, produce N, S utmost point alternate oscillation magnetic field, promote permanent magnetic steel and the reciprocating motion of mover iron core.Said structure Shortcomings is that permanent magnet is affixed on the outer surface of mover iron core, and when machine operation, coil magnetic field can produce and increase magnetic and demagnetizing effect permanent magnet, make the reciprocating motion of motor reliable and stable not, and mover quality is large.
Chinese patent ZL201020164959.6 discloses a kind of moving-iron linear oscillation motor, between its stator iron yoke and stator core, permanent magnet is housed, be uniformly distributed 4 stator cores at stator iron yoke inner periphery, 2 coils are housed on each stator slot, this structure is comparatively complicated.
Chinese patent ZL200710137599.3 discloses the reciprocating linear vibration motor of a kind of magnetic resistance, its combination by two DC electromagnet realizes, when work, give in turn two coil power supplies with the different pulsating direct current of phase place and by Unipolar driving circuit, the work magnetic field that they are produced forms displacement back and forth at the two ends of motor, slidably cylinder type mover relies on " magnetic resistance minimum principle " to produce reluctance force, and follows magnetic field that motor two ends change back and forth and form linear reciprocation operation hollow stator is inner.This structure is comparatively complicated, pushing force density is lower.
Utility model content
In view of the present situation of prior art, the purpose of this utility model is to provide a kind of permanent magnet linear vibration motor and electrical equipment, and mover part quality is lighter, and dynamic response is fast, and permanent magnet is difficult for loss of excitation, and motor operation is more reliable.For achieving the above object, the technical solution of the utility model is as follows:
A kind of permanent magnet linear vibration motor, comprises mover part and stationary part, and described mover part comprises axle and mover iron core, and described mover iron core is fixed on described axle;
Described stationary part comprises elementary iron core, permanent magnet, coil rack, the first coil and the second coil, on described elementary iron core, be provided with the groove for holding described permanent magnet, coil rack, the first coil and the second coil, described the first coil is arranged on described coil rack symmetrically with the relative described permanent magnet of described the second coil;
In the time of described the first coil and described the second coil electricity, produce magnetic field, thereby drive the axis direction reciprocating motion of described mover part along described axle.
Therein in an embodiment, described permanent magnet is arranged on the center of described groove, described groove is divided into two parts, and described permanent magnet and described the first coil are isolated by described coil rack, and described permanent magnet and described the second coil are also isolated by described coil rack.
In an embodiment, described permanent magnet is holistic annular permanent-magnet body therein, and its magnetizing direction is that radiation radial direction magnetizes; Or described permanent magnet is splicing magnet ring, and magnetizing direction is radial magnetizing or parallel magnetization.
In an embodiment, described the first coil and the second coil are making toroidal coil therein, and described the first coil and the second coil are connected in series or in parallel, and the magnetic line of force direction that described the first coil produces with the second coil is consistent.
In an embodiment, described mover iron core is circular ring type, and is made up of permeability magnetic material therein;
Described elementary iron core is also circular ring type, and is made up of permeability magnetic material.
Therein in an embodiment, described permanent magnet linear vibration motor also comprises end cap, the quantity of described end cap is two, and two described end caps are separately positioned on two ends of described elementary iron core, and wherein described at least one, end cap is flexibly connected with described axle by bearing.
In an embodiment, described permanent magnet linear vibration motor also comprises elastomeric element therein, and described elastomeric element is placed between described end cap and described mover iron core, and concentric with described axle.
In an embodiment, described elastomeric element is Compress Spring, torsionspring or flat spring therein.
In an embodiment, the quantity of described elastomeric element is one or two therein;
In the time that described elastomeric element is two, two described elastomeric elements are separately positioned on the both sides of described mover iron core.
In an embodiment, described permanent magnet linear vibration motor also comprises flat spring therein, and the quantity of described flat spring is two, and two described flat springs are separately positioned on two ends of described elementary iron core.
In an embodiment, described permanent magnet linear vibration motor also comprises flat spring and end cap therein;
One end of described elementary iron core arranges described flat spring, and the other end arranges described end cap, and described end cap is flexibly connected with described axle by bearing.
In an embodiment, the power supply of described the first coil and the second coil is AC power therein, and described AC power is sinusoidal waveform or square-wave waveform.
Therein in an embodiment, the frequency of described AC power equals or approaches described mover part reciprocating resonance frequency on axis direction.
Also comprise a kind of electrical equipment, comprise permanent magnet linear vibration motor, the permanent magnet linear vibration motor that described permanent magnet linear vibration motor is above-mentioned arbitrary technical characterictic.
The beneficial effects of the utility model are:
Permanent magnet linear vibration motor of the present utility model and electrical equipment, mover part quality is lighter, and dynamic response is fast, and permanent magnet is difficult for loss of excitation, and motor operation is more reliable; Can change thrust size by adjusting winding current amplitude, and then change vibration amplitude; The resonance frequency of elastomeric element-quality system that mover part and elastomeric element form is high, makes motor dynamics characteristic good, improves the power density of motor.
Brief description of the drawings
Fig. 1 is the generalized section of permanent magnet linear vibration motor embodiment mono-of the present utility model;
Fig. 2 is the structural representation of width to ring permanent magnet;
Fig. 3 is the ring structure schematic diagram of splicing permanent magnet;
Fig. 4 is the generalized section of permanent magnet linear vibration motor embodiment bis-of the present utility model;
Fig. 5 is the generalized section of permanent magnet linear vibration motor embodiment tri-of the present utility model;
Fig. 6 is the generalized section of permanent magnet linear vibration motor embodiment tetra-of the present utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, permanent magnet linear vibration motor of the present utility model and electrical equipment are further elaborated.Should be appreciated that specific embodiment described herein is only for explaining the utility model, and be not used in restriction the utility model.
Referring to figs. 1 through Fig. 6, permanent magnet linear vibration motor 101 1 embodiment of the present utility model, comprise mover part 70 and stationary part 50, and mover part 70 comprises axle 1 and mover iron core 2, and mover iron core 2 is fixed on axle 1.
Stationary part 50 comprises elementary iron core 3, permanent magnet 4, coil rack 5, the first coil 61 and the second coil 62, on elementary iron core 3, be provided with the groove 12 for holding permanent magnet 4, coil rack 5, the first coil 61 and the second coil 62, the first coil 61 is arranged on coil rack 5 symmetrically with the relative permanent magnet 4 of the second coil 62, in the time that the first coil 61 and the second coil 62 are switched on, produce magnetic field, thereby drive the axis direction reciprocating motion of mover part 70 along axle 1.The power supply of the first coil 61 and the second coil 62 is AC power, and described AC power is sinusoidal waveform or square-wave waveform.Preferably, the frequency of described AC power equals or approaches mover part 70 reciprocating resonance frequency on the axis direction of axle 1.
As a kind of embodiment, permanent magnet 4 is arranged on groove 12 center, and groove 12 is divided into two parts, and permanent magnet 4 and the first coil 61 are isolated by coil rack 5, and permanent magnet 4 and the second coil 62 are also isolated by coil rack 5.
Wherein, permanent magnet 4 is holistic annular permanent-magnet body, and as shown in Figure 2, its magnetizing direction is that radiation radial direction magnetizes; Certainly, permanent magnet 4 also can be splicing magnet ring, is spliced into the permanent magnet 4 of annular by multi-section circular arc shape magnet, and as shown in Figure 3, magnetizing direction is radial magnetizing or parallel magnetization.Wherein, the direction that the magnetic line of force sends and enters is exactly radial magnetizing in the diametric(al) of annular permanent-magnet body 4, and it is exactly parallel magnetization that the magnetic line of force is come in and gone out at the axis direction of annular permanent-magnet body 4.Preferably, permanent magnet 4 is made up of NdFeB material or Ferrite Material.
The first coil 61 and the second coil 62 are making toroidal coil, and the first coil 61 and the second coil 62 can be connected in series, and also can be connected in parallel, and the first coil 61 are consistent with the magnetic line of force direction that the second coil 62 produces.The sense of current that is to say the first coil 61 and the second coil 62 is all and flows into or be all outflow, and the synthetic magnetic line of force that such the first coil 61 and the second coil 62 produce equals zero through permanent magnet 4 or close to zero.
Mover iron core 2 is circular ring type, and is made up of permeability magnetic material; Elementary iron core 3 is also circular ring type, and is made up of permeability magnetic material.
As a kind of embodiment, permanent magnet linear vibration motor 101 also comprises end cap 7, and the quantity of end cap 7 is two, and two end caps 7 are separately positioned on two ends of elementary iron core 3, and wherein at least one end cap 7 is flexibly connected with axle 1 by bearing 9.Elastomeric element 8 is placed between end cap 7 and mover iron core 2, and concentric with axle 1.Elastomeric element 8 is Compress Spring, torsionspring or flat spring.The quantity of elastomeric element 8 is one or two; Wherein Fig. 4 is the situation of only having an elastomeric element 8; Fig. 1 is the situation that two elastomeric elements 8 are set, in the time that elastomeric element 8 is two, two elastomeric elements 8 are separately positioned on the both sides of mover iron core 2, elastomeric element 8 is respectively between bearing 9 and mover iron core 2, so that two elastomeric elements 8 follow the reciprocating motion of mover part 70 and expand and shrink, thereby tension force and compression stress are applied to mover part 70.Especially when by the first coil 61 and the second coil 62 be the alternating current of the approaching resonance frequency being limited by the spring constant of elastomeric element 8 and the quality of mover part 70 time, can expand the amount of movement of mover part 70.
As a kind of embodiment, as shown in Figure 5, permanent magnet linear vibration motor also comprises flat spring 10, and the quantity of flat spring 10 is two, and two flat springs 10 are separately positioned on two ends of elementary iron core 3.
As a kind of embodiment, as shown in Figure 6, one end of elementary iron core 3 arranges flat spring 10, and the other end arranges end cap 7, and end cap 7 is flexibly connected with axle 1 by bearing 9.
The permanent magnet linear vibration motor of above embodiment uses on electrical equipment, wherein electrical equipment can be electric toothbrush, air compressor, shaver, camera electromagnetic shutter, loud speaker, electric hammer machine, mixer, refrigerator, sewing machine, bag binding machine, electromagnetic pump etc., because above electrical equipment is prior art except permanent magnet linear vibration motor, repeat no longer one by one herein.
The permanent magnet linear vibration motor of above-described embodiment and electrical equipment, mover part quality is lighter, and dynamic response is fast, and permanent magnet is difficult for loss of excitation, and motor operation is more reliable; Can change thrust size by adjusting winding current amplitude, and then change vibration amplitude; The resonance frequency of elastomeric element-quality system that mover part and elastomeric element form is high, makes motor dynamics characteristic good, improves the power density of motor.
The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.

Claims (14)

1. a permanent magnet linear vibration motor, comprises mover part and stationary part, it is characterized in that:
Described mover part comprises axle and mover iron core, and described mover iron core is fixed on described axle;
Described stationary part comprises elementary iron core, permanent magnet, coil rack, the first coil and the second coil, on described elementary iron core, be provided with the groove for holding described permanent magnet, coil rack, the first coil and the second coil, described the first coil is arranged on described coil rack symmetrically with the relative described permanent magnet of described the second coil;
In the time of described the first coil and described the second coil electricity, produce magnetic field, thereby drive the axis direction reciprocating motion of described mover part along described axle.
2. permanent magnet linear vibration motor according to claim 1, is characterized in that:
Described permanent magnet is arranged on the center of described groove, and described groove is divided into two parts, and described permanent magnet and described the first coil are isolated by described coil rack, and described permanent magnet and described the second coil are also isolated by described coil rack.
3. permanent magnet linear vibration motor according to claim 2, is characterized in that:
Described permanent magnet is holistic annular permanent-magnet body, and its magnetizing direction is that radiation radial direction magnetizes;
Or described permanent magnet is splicing magnet ring, and magnetizing direction is radial magnetizing or parallel magnetization.
4. permanent magnet linear vibration motor according to claim 3, is characterized in that:
Described the first coil and the second coil are making toroidal coil, and described the first coil and the second coil are connected in series or in parallel, and the magnetic line of force direction that described the first coil produces with the second coil is consistent.
5. permanent magnet linear vibration motor according to claim 4, is characterized in that:
Described mover iron core is circular ring type, and is made up of permeability magnetic material;
Described elementary iron core is also circular ring type, and is made up of permeability magnetic material.
6. according to the permanent magnet linear vibration motor described in claim 1-5 any one, it is characterized in that:
Also comprise end cap, the quantity of described end cap is two, and two described end caps are separately positioned on two ends of described elementary iron core, and wherein described at least one, end cap is flexibly connected with described axle by bearing.
7. permanent magnet linear vibration motor according to claim 6, is characterized in that:
Also comprise elastomeric element, described elastomeric element is placed between described end cap and described mover iron core, and concentric with described axle.
8. permanent magnet linear vibration motor according to claim 7, is characterized in that:
Described elastomeric element is Compress Spring, torsionspring or flat spring.
9. permanent magnet linear vibration motor according to claim 8, is characterized in that:
The quantity of described elastomeric element is one or two;
In the time that described elastomeric element is two, two described elastomeric elements are separately positioned on the both sides of described mover iron core.
10. according to the permanent magnet linear vibration motor described in claim 1-5 any one, it is characterized in that:
Also comprise flat spring, the quantity of described flat spring is two, and two described flat springs are separately positioned on two ends of described elementary iron core.
11. according to the permanent magnet linear vibration motor described in claim 1-5 any one, it is characterized in that:
Also comprise flat spring and end cap;
One end of described elementary iron core arranges described flat spring, and the other end arranges described end cap, and described end cap is flexibly connected with described axle by bearing.
12. according to the permanent magnet linear vibration motor described in claim 1-5 any one, it is characterized in that:
The power supply of described the first coil and the second coil is AC power, and described AC power is sinusoidal waveform or square-wave waveform.
13. permanent magnet linear vibration motors according to claim 12, is characterized in that:
The frequency of described AC power equals or approaches described mover part reciprocating resonance frequency on axis direction.
14. 1 kinds of electrical equipments, comprise permanent magnet linear vibration motor, it is characterized in that:
Described permanent magnet linear vibration motor is the permanent magnet linear vibration motor described in claim 1-13 any one.
CN201320793930.8U 2013-12-04 2013-12-04 Permanent-magnetism linear oscillation motor and electrical device Withdrawn - After Issue CN203708063U (en)

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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104393734A (en) * 2014-11-13 2015-03-04 杨锦堂 Controllable displacement feeding drive system
CN104702078A (en) * 2013-12-04 2015-06-10 中国科学院宁波材料技术与工程研究所 Permanent-magnetic linear oscillation motor and motor-driven equipment
CN106451991A (en) * 2016-10-08 2017-02-22 华中科技大学 Stator permanent magnet movable iron core type linear oscillation motor
WO2018188284A1 (en) * 2017-04-13 2018-10-18 珠海三吉士健康科技有限公司 Brushless alternating current oscillating micro-motor
CN110880850A (en) * 2019-11-11 2020-03-13 华中科技大学 Stator permanent magnet type moving iron core type spring-free linear oscillation motor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104702078A (en) * 2013-12-04 2015-06-10 中国科学院宁波材料技术与工程研究所 Permanent-magnetic linear oscillation motor and motor-driven equipment
CN104702078B (en) * 2013-12-04 2018-01-09 中国科学院宁波材料技术与工程研究所 Permanent magnet linear vibration motor and electrical equipment
CN104393734A (en) * 2014-11-13 2015-03-04 杨锦堂 Controllable displacement feeding drive system
CN104393734B (en) * 2014-11-13 2017-11-24 杨锦堂 Controllable displacement feeding drive system
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 Stator permanent magnet type moving iron core type linear oscillation motor
WO2018188284A1 (en) * 2017-04-13 2018-10-18 珠海三吉士健康科技有限公司 Brushless alternating current oscillating micro-motor
CN110880850A (en) * 2019-11-11 2020-03-13 华中科技大学 Stator permanent magnet type moving iron core type spring-free linear oscillation motor

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Granted publication date: 20140709

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Effective date of abandoning: 20180109