CN207021881U - Linear vibration electric motor - Google Patents

Linear vibration electric motor Download PDF

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Publication number
CN207021881U
CN207021881U CN201720088860.4U CN201720088860U CN207021881U CN 207021881 U CN207021881 U CN 207021881U CN 201720088860 U CN201720088860 U CN 201720088860U CN 207021881 U CN207021881 U CN 207021881U
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CN
China
Prior art keywords
magnetic
magnet steel
solenoid
magnetic conductive
electric motor
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Application number
CN201720088860.4U
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Chinese (zh)
Inventor
毛路斌
侯斐
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ACC Acoustic Technologies Shenzhen Co Ltd
AAC Technologies Holdings Inc
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ACC Acoustic Technologies Shenzhen Co Ltd
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Abstract

The utility model provides a kind of linear vibration electric motor, including the housing with receiving space and the oscillator and stator that are contained in the housing, a wherein side for the oscillator and the stator includes solenoid, wherein the opposing party of the oscillator and the stator includes magnetic structure, the magnetic structure is including being divided into the first magnetic conductive part and the second magnetic conductive part and be divided into the 3rd magnetic conductive part and the 4th magnetic conductive part that the solenoid both sides are oppositely arranged that the solenoid both ends are oppositely arranged, the solenoid be contained in the host cavity and with first magnetic conductive part, second magnetic conductive part, 3rd magnetic conductive part and the 4th magnetic conductive part are arranged at intervals;And be fixed on the first magnet steel of first magnetic conductive part and be fixed on the second magnet steel of second magnetic conductive part, the magnetic pole homopolarity of first magnet steel and second magnet steel is oppositely arranged.The driving force of the drive vibrator vibration of linear vibration electric motor of the present utility model is big, fast response time.

Description

Linear vibration electric motor
【Technical field】
It the utility model is related to vibrating motor field, more particularly to a kind of linear vibration electric motor.
【Background technology】
Linear vibration electric motor is the part that a kind of generation principle using electromagnetic force converts electrical energy into mechanical energy, is linearly shaken Dynamic motor is typically mounted in portable mobile apparatus, to produce vibrational feedback, such as the vibration of mobile phone or the vibration of game machine Feedback etc..
In correlation technique, linear vibration electric motor generally only passes through Lorentz caused by the magnetic field interaction of coil and magnet steel Power provides driving force, of reciprocating vibration with drive vibrator, but the driving force of above-mentioned linear vibration electric motor is smaller, therefore causes vibration Response time is longer.
Therefore, it is necessary to a kind of new linear vibration electric motor is provided to solve the above problems.
【Utility model content】
The purpose of this utility model is to provide that a kind of driving force is big, the faster linear vibration electric motor of response speed.
The technical solution of the utility model is as follows:A kind of linear vibration electric motor is provided,
Including the housing with receiving space and the oscillator and stator that are contained in the housing, the oscillator and described fixed A wherein side for son includes solenoid, and wherein the opposing party of the oscillator and the stator includes magnetic structure, the magnetic circuit knot Structure includes:
It is divided into the first magnetic conductive part and the second magnetic conductive part that the solenoid both ends are oppositely arranged;
It is divided into the 3rd magnetic conductive part and the 4th magnetic conductive part that the solenoid both sides are oppositely arranged, first magnetic conductive part, Second magnetic conductive part, the 3rd magnetic conductive part and the 4th magnetic conductive part are integrally formed and surround the annular magnetic with host cavity Bowl, the solenoid are contained in the host cavity and led with first magnetic conductive part, second magnetic conductive part, the described 3rd Magnetic part and the 4th magnetic conductive part are arranged at intervals;
And it is fixed on the first magnet steel of first magnetic conductive part and is fixed on the second magnet steel of second magnetic conductive part, institute The magnetic pole homopolarity for stating the first magnet steel and second magnet steel is oppositely arranged, first magnet steel and the solenoid face and with institute State solenoid interval, second magnet steel with the solenoid face and with the solenoid interval.
Preferably, the linear vibration electric motor also includes the fixed solenoidal soft magnetic bodies, and the solenoid is set around The soft magnetic bodies periphery, first magnet steel are set with the soft magnetic bodies face respectively with second magnet steel.
Preferably, the soft magnetic bodies include main part and two extensions extended respectively by the main part both ends, described Solenoid is set around the main part, and the extension is set with first magnet steel and the second magnet steel face respectively.
Preferably, the magnetic structure also includes being fixed on the 3rd magnetic part of the 3rd magnetic conductive part and is fixed on described 4th magnetic part of the 4th magnetic conductive part, the 3rd magnetic part and the 4th magnetic part respectively with the solenoid face simultaneously It is arranged at intervals.
Preferably, the 3rd magnetic part and the 4th magnetic part are magnet.
Preferably, the 3rd magnet steel is oppositely arranged with the 4th magnetic steel magnetic pole homopolarity, and the 3rd magnet steel and The polarity phase of the relative magnetic pole of the 4th magnet steel homopolarity magnetic pole relative with first magnet steel and the second magnet steel homopolarity Instead.
Preferably, the 3rd magnetic part and the 4th magnetic part are respectively from the 3rd magnetic conductive part and the described 4th It is raised that magnetic conductive part extends the magnetic conduction to be formed towards the soft magnetic bodies.
Preferably, first magnet steel is identical with the second magnet steel shape and is symmetricly set on the solenoid both ends, First magnet steel includes the first surface relative with the solenoid and is oppositely arranged with the first surface and is fixed on institute The second surface of the first magnetic conductive part is stated, the area of the first surface is less than the area of the second surface.
The beneficial effects of the utility model are:Linear vibration electric motor provided by the utility model by set soft magnetic bodies and The solenoid set around the soft magnetic bodies, while magnet steel is set in the soft magnetic bodies both sides, after making the magnet steel and being powered Active force after caused Lorentz force and the soft magnetic bodies magnetize between the solenoid between the magnet steel is superimposed, makes Increase drives the driving force of the mass vibration, so that motor fast response time.
【Brief description of the drawings】
Fig. 1 is the stereogram of the utility model linear vibration electric motor embodiment one;
Fig. 2 is the stereochemical structure exploded view of the utility model linear vibration electric motor embodiment one;
Fig. 3 is the sectional view of the line A-A along Fig. 1;
Fig. 4 is the part-structure schematic diagram of the utility model linear vibration electric motor embodiment one;
Fig. 5 is the part-structure schematic diagram of the utility model linear vibration electric motor embodiment two;
Fig. 6 is the part-structure schematic diagram of the utility model linear vibration electric motor embodiment three.
【Embodiment】
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
Fig. 1-Fig. 3 is refer to, wherein, Fig. 1 is the stereogram of the utility model linear vibration electric motor embodiment one;Fig. 2 is The stereochemical structure exploded view of the utility model linear vibration electric motor embodiment one;Fig. 3 is the sectional view of the line A-A along Fig. 1.It is described Linear vibration electric motor 200 includes the housing 1 with receiving space, the oscillator 2 being contained in the housing 1 and stator 3 and will The oscillator 2 is suspended in the elastic component 4 in the housing 1.
The housing 1 includes the first housing 11 and is covered on first housing 11 and forms the second of the receiving space Housing 12.
A wherein side for the oscillator 2 and the stator 3 includes solenoid, the oscillator 2 and the stator 3 it is wherein another One side includes magnetic structure.In order to which the present invention is described in detail, the stator 3 is now set to include the solenoid 31, institute Stating oscillator 2 includes the magnetic structure 21.
The oscillator 2 is also included to produce the mass 22 of vibration.The solenoid 31 produces electromagnetic force after being powered, institute State magnetic structure 21 and produce Loulun magnetism, by the superposition of electromagnetic force and the Loulun magnetism, so as to promote the oscillator 2 in institute The internal vibration of housing 1 is stated, and then vibration sense is externally exported by the vibrating motor 200.
The magnetic structure 21 is including the annular magnetic bowl 211 with host cavity and in the magnetic bowl 211 and sets relatively The first magnet steel 213 and the second magnet steel 214 put.
The magnetic bowl 211 is led including being divided into the first magnetic conductive part 2111 and second that the both ends of solenoid 31 are oppositely arranged Magnetic part 2112 and the 3rd magnetic conductive part 2113 and the 4th magnetic conductive part 2114 that the both sides of solenoid 31 are oppositely arranged are divided into, institute State the first magnetic conductive part 2111, second magnetic conductive part 2112, the 3rd magnetic conductive part 2113 and the 4th magnetic conductive part 2,114 1 It is body formed to surround the magnetic bowl 211.The solenoid 31 be contained in the host cavity and with first magnetic conductive part 2111, Second magnetic conductive part 2112, the 3rd magnetic conductive part 2113 and the 4th magnetic conductive part 2114 are arranged at intervals.
First magnet steel 213 is fixed on first magnetic conductive part 2111, and second magnet steel 214 is fixed on second magnetic conduction Part 2112, and the magnetic pole homopolarity of first magnet steel 213 and second magnet steel 214 is oppositely arranged.
The mass 22 includes side wall 221 and encloses the receiving space 222 formed by the side wall 221.This embodiment party In formula, the receiving space 222 is square.The elastic component 4 is preferably U-shaped spring in the present invention.The elastic component 4 one The mass 22 is fixed at end, and the other end is fixed on the housing 1.The elastic component 4 and the mass 22 and/or described The junction of housing 1 is preferably provided with strengthening weld tabs, can not only strengthen the adhesion of the elastic component 4, be also prevented from the bullet The property overflexing of part 4 and be broken.
The stator 3 also includes soft magnetic bodies 32, and the soft magnetic bodies 32 are fixed on second housing 12, the soft magnetic bodies 32 It is made up of ferro-silicium.The soft magnetic bodies 32 include main part 321 and two extensions extended respectively by the both ends of main part 321 Portion 322, the extension 322 are square, the extension 322 respectively with first magnet steel 213 and second magnet steel 214 Face is set.First magnet steel 213 be arranged in parallel and is arranged at intervals with the extension 322, the extension 322 with it is described The spacing and the extension 322 of first magnet steel 213 are more than or equal to the mass 22 with the spacing of second magnet steel 214 Peak swing, the presence of first magnet steel 213 and second magnet steel 214 is not influenceed the normal of the mass 22 and shake It is dynamic.The solenoid 31 is set around the periphery of soft magnetic bodies 32, specifically, the solenoid 31 is set around the main part 321 Put, the solenoid 31 is between two extensions 322.
Incorporated by reference to reference picture 4, for the part-structure schematic diagram of the utility model linear vibration electric motor embodiment one.The magnetic Line structure 21 also includes the 3rd magnetic part 215 for being fixed on the 3rd magnetic conductive part 2113 and is fixed on the 4th magnetic conductive part 2114 the 4th magnetic part 216, the 3rd magnetic part 213 and the 4th magnetic part 214 respectively with the solenoid 31 just Pair and be arranged at intervals.In present embodiment, the 3rd magnetic part 215 and the 4th magnetic part 216 is respectively from described the The magnetic conduction that three magnetic conductive parts 2113 and the 4th magnetic conductive part 2114 are formed towards the soft magnetic bodies 32 extension is raised.
First magnet steel 213 is relative with the magnetic pole homopolarity of second magnet steel 214.In present embodiment, described first The N of magnet steel 213 and second magnet steel 214 is extremely relative.The magnetic line of force of first magnet steel 213 is from its N pole, through described The extension 322 of soft magnetic bodies 32 enters one end of the solenoid 31, is then worn respectively from the both sides of the solenoid 31 Go out, a part of magnetic line of force is through the 3rd magnetic part 215 and passes through the 3rd magnetic conductive part 2113 and first magnetic conductive part 2111 return to its S pole, and another part magnetic line of force is through the 4th magnetic part 216 and passes through the 4th magnetic conductive part 2114 and institute State the first magnetic conductive part 2111 and return to its S pole;The magnetic line of force of second magnet steel 214 is from its N pole, through the soft magnetic bodies 32 Another extension 322 enter the other end of the solenoid 31, then passed from the both sides of the solenoid 31, one Divide the magnetic line of force through the 3rd magnetic part 215 and returned to by the 3rd magnetic conductive part 2113 and second magnetic conductive part 2112 Its S pole, another part magnetic line of force are led through the 4th magnetic part 216 and by the 4th magnetic conductive part 2114 and described second Magnetic part 2112 returns to its S pole, wherein, first magnet steel 213 and second magnet steel 214 form two complete magnetic and returned respectively Road.
When the solenoid 31 is powered, the magnetic line of force of first magnet steel 213 produces Lorentz lorentz with the solenoid 31 Power drives the mass 22 to vibrate.Specifically, magnetization, this implementation are produced to the soft magnetic bodies 32 when the solenoid 31 is powered In mode, for purposes of illustration only, one end of close first magnet steel 213 of the soft magnetic bodies 32 is set as S poles, close to described second One end of magnet steel 214 is N poles.Now, the S poles of the soft magnetic bodies 32 produce attraction, the soft magnetism with first magnet steel 213 The N poles of body 32 and first magnet steel 213 produce repulsive force, now the soft magnetic bodies 32 and first magnet steel 213 and described Active force between second magnet steel 214 is made a concerted effort towards first magnet steel 213, so as to promote the mass 22 to described the The direction vibration of one magnet steel 213;Accordingly, when the solenoid 31 is reversely powered the soft magnetic bodies 32 with first magnetic The active force of steel 213 and second magnet steel 214 is made a concerted effort towards second magnet steel 214, so as to promote the mass 22 Vibrated to the direction of second magnet steel 214.First magnet steel 213 and second magnet steel 214 can also be that S is extremely relative, It forms magnetic loop and acts the principle of power with above-mentioned embodiment with the soft magnetic bodies 32.By setting described first Magnet steel 213 and second magnet steel 214 and the soft magnetic bodies 32, the vibrating motor 200 is set to produce the driving quality Two driving forces that block 22 vibrates, i.e., described first magnet steel 213 and second magnet steel 214 produce with the solenoid 31 being powered Raw Lorentz force, and the solenoid 31 be powered after the soft magnetic bodies 32 magnetize and with first magnet steel 213 and described The caused electromagnetic force of second magnet steel 214 interaction, it is achievable larger by the way that above-mentioned Lorentz force and electromagnetic force is superimposed Driving force, make the fast response time of linear vibration electric motor 200.
Fig. 5 is refer to, is the part-structure schematic diagram of the utility model linear vibration electric motor embodiment two.The present embodiment The structure of linear vibration electric motor is substantially the same with embodiment one, and the 3rd magnetic part 215 and the 4th magnetic part 216 are Magnet, wherein, first magnet steel 213 is relative with the magnetic pole homopolarity of second magnet steel 214, the 3rd magnetic part 215 and The magnetic pole homopolarity of 4th magnetic part 216 is relative, and first magnet steel 213 and the relative magnetic pole of second magnet steel 214 The magnetic pole relative with the 3rd magnetic part 215 and the 4th magnetic part 216 is opposite.In present embodiment, first magnetic The N poles of steel 213 and second magnet steel 214 are oppositely arranged, the S poles of the 3rd magnetic part 215 and the 4th magnetic part 216 It is oppositely arranged.
First magnet steel 213 and second magnet steel 214 form the principle of magnetic loop with embodiment one.3rd magnetic Property part 215 the magnetic line of force from N poles, enter the main part 321, then two extension respectively through the solenoid 31 Portion 322 passes and returns to its S pole by the magnetic bowl 215, forms two complete magnetic loops.The magnetic of 4th magnetic part 216 The line of force enters the main part 321 through the solenoid 31, then worn respectively from two extensions 322 from its N pole Go out and its S pole is returned to by the magnetic bowl 215, form two complete magnetic loops.By by the 3rd magnetic part 215 and described 4th magnetic part 216 is arranged to magnet, makes magnetic loop that first magnet steel 213 is formed with second magnet steel 214 and described 3rd magnetic part 215 and the magnetic loop that the 4th magnetic part 216 is formed are superimposed, can further enhance the driving mass The driving force of 22 vibrations.
Incorporated by reference to reference picture 6, for the part-structure schematic diagram of the utility model linear vibration electric motor embodiment three.This implementation The structure of linear vibration electric motor of example is substantially the same with embodiment two, in the present embodiment, the 3rd magnetic part 215 and described the Four magnetic parts 216 are magnet.First magnet steel 213 is identical with the shape of the second magnet steel 214 and is symmetricly set on described The both ends of solenoid 31, first magnet steel 213 include the first surface 2131 relative with the solenoid 31 and with described first Surface 2131 is oppositely arranged and is fixed on the second surface 2132 of first magnetic conductive part 2111, wherein, the first surface 2131 area is less than the area of the second surface 2132.The design of the structure makes to enter first magnet steel 213 and described The magnetic line of force of second magnet steel 214 is more concentrated, and can further enhance driving force.
In other preferred embodiments of the present utility model, solenoid 31 can be a part for oscillator, magnetic structure 21 It is fixed on housing, mass is for example suspended in the top of magnetic structure 21, and solenoid 31 is fixed on below mass, with above-mentioned reality Apply example similarly, solenoid 31 and magnetic structure 21 interact and then drive mass vibration, remaining part structure with it is above-mentioned Embodiment is similar, will not be described here.
Compared with correlation technique, linear vibration electric motor of the present utility model is by setting soft magnetic bodies and around the soft magnetic bodies The coil of setting, and magnet steel is set in the soft magnetic bodies both sides, caused by between the coil after making the magnet steel and being powered Active force after Lorentz force and soft magnetic bodies magnetization between the magnet steel is superimposed, makes increase drive the mass to shake Dynamic driving force, so as to fast response time.
Above-described is only embodiment of the present utility model, it should be noted here that the ordinary skill for this area For personnel, on the premise of not departing from the utility model and creating design, improvement can also be made, but these belong to this practicality New protection domain.

Claims (8)

1. a kind of linear vibration electric motor, including the housing with receiving space and the oscillator and stator that are contained in the housing, A wherein side for the oscillator and the stator includes solenoid, and wherein the opposing party of the oscillator and the stator includes magnetic circuit Structure, it is characterised in that the magnetic structure includes:
It is divided into the first magnetic conductive part and the second magnetic conductive part that the solenoid both ends are oppositely arranged;
It is divided into the 3rd magnetic conductive part and the 4th magnetic conductive part that the solenoid both sides are oppositely arranged, it is first magnetic conductive part, described Second magnetic conductive part, the 3rd magnetic conductive part and the 4th magnetic conductive part are integrally formed the annular magnetic bowl surrounded with host cavity, institute State solenoid be contained in the host cavity and with first magnetic conductive part, second magnetic conductive part, the 3rd magnetic conductive part It is arranged at intervals with the 4th magnetic conductive part;
And be fixed on the first magnet steel of first magnetic conductive part and be fixed on the second magnet steel of second magnetic conductive part, described the The magnetic pole homopolarity of one magnet steel and second magnet steel is oppositely arranged, first magnet steel and the solenoid face and with the spiral shell Spool interval, second magnet steel and the solenoid face and with the solenoid interval.
2. linear vibration electric motor according to claim 1, it is characterised in that also include the fixed solenoidal soft magnetism Body, the solenoid are set around the soft magnetic bodies periphery, first magnet steel and second magnet steel respectively with the soft magnetic bodies Face is set.
3. linear vibration electric motor according to claim 2, it is characterised in that the soft magnetic bodies include main part and respectively by Two extensions of main part both ends extension, the solenoid are set around the main part, the extension respectively with institute State the first magnet steel and the second magnet steel face is set.
4. linear vibration electric motor according to claim 2, it is characterised in that the magnetic structure is also described including being fixed on 3rd magnetic part of the 3rd magnetic conductive part and the 4th magnetic part for being fixed on the 4th magnetic conductive part, the 3rd magnetic part with it is described 4th magnetic part is respectively with the solenoid face and being arranged at intervals.
5. linear vibration electric motor according to claim 4, it is characterised in that the 3rd magnetic part and the 4th magnetic Part is magnet.
6. linear vibration electric motor according to claim 5, it is characterised in that the 3rd magnet steel and the 4th magnet steel magnetic Pole homopolarity is oppositely arranged, and the 3rd magnet steel and the relative magnetic pole of the 4th magnet steel homopolarity and first magnet steel and institute State the opposite polarity of the relative magnetic pole of the second magnet steel homopolarity.
7. linear vibration electric motor according to claim 4, it is characterised in that the 3rd magnetic part and the 4th magnetic Part is to extend the magnetic conduction to be formed projection towards the soft magnetic bodies from the 3rd magnetic conductive part and the 4th magnetic conductive part respectively.
8. linear vibration electric motor according to claim 1, it is characterised in that first magnet steel and the second magnet steel shape Shape is identical and is symmetricly set on the solenoid both ends, first magnet steel include the first surface relative with the solenoid and It is oppositely arranged with the first surface and is fixed on the second surface of first magnetic conductive part, the area of the first surface is less than The area of the second surface.
CN201720088860.4U 2017-01-20 2017-01-20 Linear vibration electric motor Active CN207021881U (en)

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CN201720088860.4U CN207021881U (en) 2017-01-20 2017-01-20 Linear vibration electric motor

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108880169A (en) * 2018-08-03 2018-11-23 瑞声科技(南京)有限公司 Linear vibration electric motor
WO2021000093A1 (en) * 2019-06-29 2021-01-07 瑞声声学科技(深圳)有限公司 Motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108880169A (en) * 2018-08-03 2018-11-23 瑞声科技(南京)有限公司 Linear vibration electric motor
US11025150B2 (en) 2018-08-03 2021-06-01 Aac Acoustic Technologies (Shenzhen) Co., Ltd. Linear vibration motor
WO2021000093A1 (en) * 2019-06-29 2021-01-07 瑞声声学科技(深圳)有限公司 Motor

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