CN106208613A - Linear vibration electric motor - Google Patents
Linear vibration electric motor Download PDFInfo
- Publication number
- CN106208613A CN106208613A CN201610579194.4A CN201610579194A CN106208613A CN 106208613 A CN106208613 A CN 106208613A CN 201610579194 A CN201610579194 A CN 201610579194A CN 106208613 A CN106208613 A CN 106208613A
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- CN
- China
- Prior art keywords
- voice coil
- electric motor
- linear vibration
- loudspeaker voice
- coil loudspeaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/035—DC motors; Unipolar motors
- H02K41/0352—Unipolar motors
- H02K41/0354—Lorentz force motors, e.g. voice coil motors
- H02K41/0356—Lorentz force motors, e.g. voice coil motors moving along a straight path
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention provides a kind of linear vibration electric motor.Described linear vibration electric motor includes the housing with receiving space, the main magnetic circuit system being contained in described housing and vibration component, described vibration component includes the voice coil loudspeaker voice coil for producing vibration and the mass with described voice coil loudspeaker voice coil synchronous vibration, described voice coil loudspeaker voice coil is arranged around described main magnetic circuit system, described voice coil loudspeaker voice coil includes input terminal and outlet terminal, described linear vibration electric motor also includes being fixed on the electrical connector of described mass and being fixed on the conducting strip of described housing, the input terminal of described voice coil loudspeaker voice coil and the outlet terminal of described voice coil loudspeaker voice coil electrically connect with described electrical connector respectively, described conducting strip elasticity is connected to described electrical connector and electrically connects with described electrical connector.Operationally, voice coil loudspeaker voice coil outlet is not easily broken the linear vibration electric motor of the present invention, good reliability.
Description
[technical field]
The present invention relates to vibrating motor technical field, concrete, relate to a kind of linear vibration electric motor.
[background technology]
Linear vibration electric motor is the device that a kind of generation principle utilizing electromagnetic force converts electrical energy into mechanical energy, linearly shakes
Galvanic electricity machine is typically mounted in portable mobile apparatus, to produce vibrational feedback, such as vibration or the vibration of game machine of mobile phone
Feedback etc..
In correlation technique, the input terminal of the voice coil loudspeaker voice coil of Z axis Linear vibrating motor and outlet terminal be commonly connected directly in
The flexible circuit board that is attached on the housing of linear vibration electric motor or cover plate (Flexible Printed Circuit board,
FPC), or the input terminal of voice coil loudspeaker voice coil and outlet terminal are placed directly against outlet on housing or cover plate, and at moving-coil type Z axis Linear
In the structure of vibrating motor, voice coil loudspeaker voice coil is relatively big with the amplitude of input terminal and outlet terminal relative motion, the outlet side of above-mentioned voice coil loudspeaker voice coil
Formula is easily caused the line broken string of voice coil loudspeaker voice coil, thus affects the normal work of linear vibration electric motor, poor reliability.
Therefore, it is necessary to provide a kind of new linear vibration electric motor to solve the problems referred to above.
[summary of the invention]
It is an object of the invention to provide a kind of voice coil loudspeaker voice coil line and be difficult to broken string, the linear vibration electric motor of good reliability.
Technical scheme is as follows: described linear vibration electric motor includes the housing with receiving space and is contained in institute
State the main magnetic circuit system in housing and vibration component, described vibration component include the voice coil loudspeaker voice coil for producing vibration and with described voice coil loudspeaker voice coil
The mass of synchronous vibration, described voice coil loudspeaker voice coil is arranged around described main magnetic circuit system interval, and described voice coil loudspeaker voice coil includes input terminal and goes out
Line terminals, described linear vibration electric motor also includes being fixed on the electrical connector of described mass and being fixed on the conduction of described housing
Sheet, the input terminal of described voice coil loudspeaker voice coil and the outlet terminal of described voice coil loudspeaker voice coil electrically connect with described electrical connector respectively, described conducting strip
Including being fixed on the fixed part of described housing, described the fixed part elastic extended and being connect electricity by what described elastic extended
Portion, described fixed part electrically connects with extraneous power supply, and described power part elasticity is connected to described electrical connector and electrically connects with described
Part electrically connects.
Preferably, described housing includes that drain pan and cover plate, described cover plate are covered on described drain pan and form described receiving space,
Described conducting strip is contained in described receiving space and is fixed on described cover plate.
Preferably, described linear vibration electric motor also includes the fixture being fixed on described cover plate, and described fixed part passes through institute
State fixture and be fixed on described cover plate.
Preferably, the quantity of described conducting strip is two and spaced setting, conducting strip described in one and extraneous power supply
Positive electrical connects, and another described conducting strip is connected with the negative electricity of extraneous power supply.
Preferably, the quantity of described mass is two and spaced setting, described mass include mass body,
It is positioned at the described mass body the first groove near one end of described voice coil loudspeaker voice coil and is positioned at described mass body away from described sound
Second groove of one end of circle, the two ends of described voice coil loudspeaker voice coil are respectively arranged on the first groove described in two.
Preferably, described electrical connector include the first connecting portion, by described first connecting portion extend the second connecting portion and
By vertically extending 3rd connecting portion of described second connecting portion, described first connecting portion, described second connecting portion and the described 3rd
Connecting portion is individually fixed in described mass body, described the first pontes not with input terminal and the described sound of described voice coil loudspeaker voice coil
The outlet terminal electrical connection of circle, described 3rd connecting portion is fixed on described second groove and abuts against with described power part.
Preferably, described electrical connector is flexible circuit board.
Preferably, described main magnetic circuit system include two the most spaced main magnet steel and be located in main magnet steel described in two it
Between the first pole piece, the magnetic pole homopolarity of main magnet steel described in two is oppositely arranged, described voice coil loudspeaker voice coil around described first pole piece arrange.
Preferably, described linear vibration electric motor also includes the secondary magnetic circuit system being positioned at described main magnetic circuit system both sides, described
Secondary magnetic circuit system includes that four secondary magnet steel, described secondary magnet steel are oppositely arranged two-by-two, and the magnetic pole of the described secondary magnet steel being oppositely arranged is same
Pole is oppositely arranged, and the polarity phase of magnetic pole that the polarity of magnetic pole that is oppositely arranged of homopolarity is oppositely arranged with described main magnet steel homopolarity
Instead.
The beneficial effects of the present invention is: the linear vibration electric motor that the present invention provides is fixed on the electricity of mass by setting
Connector and the conducting strip abutting with electrical connector elasticity and electrically connecting, the input terminal of voice coil loudspeaker voice coil and outlet terminal respectively be electrically connected
Fitting electrically connect, conducting strip with the external world power supply electrically connect so that linear vibration electric motor operationally, voice coil loudspeaker voice coil body and input terminal
And the amplitude of the relative displacement of outlet terminal is less, the electric wire connecting voice coil loudspeaker voice coil input terminal and outlet terminal is not easily broken, thus
Make the good reliability of linear vibration electric motor.
[accompanying drawing explanation]
Fig. 1 is the three-dimensional structure diagram of linear vibration electric motor of the present invention;
Fig. 2 is the stereochemical structure exploded view of linear vibration electric motor shown in Fig. 1;
Fig. 3 is the cut-away view of line A-A along Fig. 1;
Fig. 4 is the partial enlarged drawing shown in A in Fig. 3;
Fig. 5 is the axonometric chart of the conducting strip of linear vibration electric motor of the present invention.
[detailed description of the invention]
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Referring to Fig. 1-Fig. 3, wherein, Fig. 1 is the three-dimensional structure diagram of linear vibration electric motor of the present invention;Fig. 2 is Fig. 1 institute
The stereochemical structure exploded view of linear vibrating motor;Fig. 3 is the cut-away view along Fig. 1 along line A-A.Described linear vibration electric motor
200 include having the housing 1 of receiving space, the main magnetic circuit system 2 being contained in described housing 1, secondary magnetic circuit system 3, be contained in
Vibration component 4 in described housing 1, described vibration component 4 is suspended in the spring part 5 in described housing 1, it is contained in described receipts
Hold in space and be fixed on the conducting strip 6 of described housing 1, be fixed on described vibration component 4 and electrically connect with described conducting strip 6
Electrical connector 7, it is fixed on described housing 1 fixture 8 being connected with described conducting strip 6.
Described housing 1 includes drain pan 11 and the cover plate 12 being equipped with described drain pan 11, and described cover plate 12 is covered on institute
State drain pan 11 and form described receiving space.The described drain pan 11 cuboid in hollow structure.
Described main magnetic circuit system 2 includes two the most spaced main magnet steel 21 and is held on described in two between main magnet steel 21
The first pole piece 22, described main magnetic circuit system 2 is fixed on described housing 1.Described in two, main magnet steel 21 homopolarity is relative.
Described secondary magnetic circuit system 3 includes that four secondary magnet steel 31 and two second pole pieces 32, described secondary magnet steel 31 set the most relatively
Putting and clamp the second pole piece 32 described in, the magnetic pole homopolarity of the described secondary magnet steel 31 being oppositely arranged is oppositely arranged, and homopolarity is relative
The opposite polarity of the magnetic pole that the polarity of the magnetic pole arranged is oppositely arranged with described main magnet steel 21 homopolarity.Described secondary magnetic circuit system 3 is solid
Due to described housing 1, the opposite polarity that two polarity being oppositely arranged are oppositely arranged with described main magnet steel 21 so that described main magnet steel
Magnetic field intensity between 21 and the magnetic gap of described secondary magnet steel 31 formation is big, and described main magnetic circuit system 2 and described secondary magnetic circuit system 3 are used
To produce magnetic field.
Described vibration component 4 includes mass 41 and drives the voice coil loudspeaker voice coil 42 of described mass 41 vibration.Described voice coil loudspeaker voice coil 42 with
Described spring part 5 is connected, and described mass 41 is fixed in the most described spring part 5 one end, and the other end is fixed on described housing
1, described voice coil loudspeaker voice coil 42 spring part 5 described in rear drive that is energized deforms upon and drives described mass 41 up-down vibration.
The quantity of described mass 41 is two and spaced setting, described mass 41 include mass body 411,
It is positioned at described mass body 411 and near first groove 412 of one end of described voice coil loudspeaker voice coil 42 and is positioned at described mass body 411
Away from second groove 413 of one end of described voice coil loudspeaker voice coil 42, the two ends of described voice coil loudspeaker voice coil 42 are respectively arranged on the first groove 412 described in two.
Described voice coil loudspeaker voice coil 42 arranges around described main magnetic circuit system 2 interval and produces vibration with described the action of a magnetic field, concrete,
Described voice coil loudspeaker voice coil 42 is arranged around described first pole piece 22, after the energising of described voice coil loudspeaker voice coil 42, at described main magnetic circuit system 2 and described secondary magnetic
Under the effect of road system 3, described voice coil loudspeaker voice coil 42 is along described main magnet steel 21 up-down vibration, thus drives described spring part 5 and described matter
The vibration of gauge block 41.Described voice coil loudspeaker voice coil 42 includes voice coil loudspeaker voice coil body 421, the input terminal 422 connecting described voice coil loudspeaker voice coil body 421 and outlet
Terminal 423, the described input terminal 422 of described voice coil loudspeaker voice coil 42 and described outlet terminal 423 are electrically connected mutually with described electrical connector 7 respectively
Connect.
In present embodiment, the quantity of described spring part 5 is one.Described housing 1 is fixed in described spring part 5 one end,
The other end connects mass 41 described in two respectively, makes to drive described spring part 5 to produce deformation also during described voice coil loudspeaker voice coil 42 up-down vibration
Drive mass 41 up-down vibration described in two.
Incorporated by reference to reference to Fig. 4 and Fig. 5, wherein, Fig. 4 is the partial enlarged drawing shown in A in Fig. 3;Fig. 5 is that the present invention linearly shakes
The axonometric chart of the conducting strip of galvanic electricity machine.The quantity of described conducting strip 6 is two and spaced setting, conducting strip 6 described in
The positive electrical of extraneous power supply connects, and another described conducting strip 6 is connected with the negative electricity of extraneous power supply.Described conducting strip 6 is contained in
In described receiving space and be fixed on described cover plate 12, described conducting strip 6 include being fixed on described housing 1 fixed part 61, by
Elastic 62 that described fixed part 61 extends and the power part 63 that extended by described elastic 62, described fixed part 61 and external world's electricity
Source electrically connects, and described power part 63 elasticity is connected to described electrical connector 7 and electrically connects with described electrical connector 7.Described conduction
Sheet 6 abuts holding electrical connection all the time by the elastic force effect of described elastic 62 with described electrical connector 7.
Described electrical connector 7 is fixed on described mass 41, and described electrical connector 7 includes the first connecting portion 71, by described
First connecting portion 71 extend the second connecting portion 72 and by described second vertically extending 3rd connecting portion 73 of connecting portion 72, described
First connecting portion 71, described second connecting portion 72 and described 3rd connecting portion 73 are individually fixed in described mass body 411, institute
State the first connecting portion 71 respectively with described input terminal 422 and the described outlet terminal 423 of described voice coil loudspeaker voice coil 42 of described voice coil loudspeaker voice coil 42
Being connected, described second connecting portion 72 is fixed on described mass body 411, and described 3rd connecting portion 73 is fixed on described second
The inwall of groove 413 also abuts against with described power part 63.In present embodiment, described electrical connector 7 is flexible circuit board.Logical
Cross and described input terminal 422 and the described outlet terminal 423 of described voice coil loudspeaker voice coil 42 are fixed on the electrical connection on described mass 41
Part electrically connects with the external world, reduces described input terminal 422 and described outlet terminal 423 and vibrates phase para-position at described voice coil loudspeaker voice coil 42
The amplitude moved, makes described voice coil loudspeaker voice coil 42 described input terminal 422 electric wire and described outlet terminal 423 electric wire when vibration not allow easy-to-draw
Pulling, the dependability making described linear vibration electric motor 200 is good.
Described fixture 8 is platy structure, and described housing is fixed on by described fixture 8 in one end of described conducting strip 6
1, the most described fixed part 61 is fixed on described cover plate 12 by described fixture 8, strengthens described conducting strip 6 and is fixed on described housing
Steadiness on 1.
Compared with correlation technique, the linear vibration electric motor of the present invention by setting be fixed on mass electrical connector and with
The conducting strip that electrical connector elasticity abuts and electrically connects, the input terminal of voice coil loudspeaker voice coil and outlet terminal are electrically connected with electrical connector respectively
Connecing, conducting strip electrically connect with extraneous power supply so that linear vibration electric motor operationally, voice coil loudspeaker voice coil and input terminal and outlet terminal
The amplitude of relative displacement is less, and the electric wire connecting voice coil loudspeaker voice coil input terminal and outlet terminal is not easily broken, so that linear oscillator is electric
The good reliability of machine.
Above-described is only embodiments of the present invention, it should be noted here that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, it is also possible to make improvement, but these belong to the protection model of the present invention
Enclose.
Claims (9)
1. a linear vibration electric motor, including the housing with receiving space and the main magnetic circuit system that is contained in described housing and
Vibration component, described vibration component includes the voice coil loudspeaker voice coil for producing vibration and the mass with described voice coil loudspeaker voice coil synchronous vibration, described
Voice coil loudspeaker voice coil is arranged around described main magnetic circuit system interval, and described voice coil loudspeaker voice coil includes input terminal and outlet terminal, it is characterised in that described
Linear vibration electric motor also includes being fixed on the electrical connector of described mass and being fixed on the conducting strip of described housing, described inlet wire
Terminal and described outlet terminal electrically connect with described electrical connector respectively, and described conducting strip includes being fixed on the fixing of described housing
Portion, described the fixed part elastic extended and the power part extended by described elastic, described fixed part and extraneous power supply electricity
Connecting, described power part elasticity is connected to described electrical connector and electrically connects with described electrical connector.
Linear vibration electric motor the most according to claim 1, it is characterised in that described housing includes drain pan and cover plate, described
Cover plate is covered on described drain pan and forms described receiving space, and described conducting strip is contained in described receiving space and is fixed on described
Cover plate.
Linear vibration electric motor the most according to claim 2, it is characterised in that described linear vibration electric motor also includes being fixed on
The fixture of described cover plate, described fixed part is fixed on described cover plate by described fixture.
Linear vibration electric motor the most according to claim 1, it is characterised in that the quantity of described conducting strip is two and mutually
Interval is arranged, and conducting strip described in is connected with the positive electrical of extraneous power supply, another described conducting strip and the negative electricity of extraneous power supply
Connect.
Linear vibration electric motor the most according to claim 1, it is characterised in that the quantity of described mass is two and mutually
Interval is arranged, and described mass includes mass body, is positioned at described mass body near the first of one end of described voice coil loudspeaker voice coil
Groove and be positioned at the described mass body the second groove away from one end of described voice coil loudspeaker voice coil, the two ends of described voice coil loudspeaker voice coil are respectively arranged on two
Described first groove.
Linear vibration electric motor the most according to claim 5, it is characterised in that described electrical connector include the first connecting portion,
The second connecting portion of being extended by described first connecting portion and by vertically extending 3rd connecting portion of described second connecting portion, described the
A junction, described second connecting portion and described 3rd connecting portion are individually fixed in described mass body, and described first connects
Portion's outlet terminal with the input terminal of described voice coil loudspeaker voice coil and described voice coil loudspeaker voice coil respectively electrically connects, and described 3rd connecting portion is fixed on described
Second groove also abuts against with described power part.
Linear vibration electric motor the most according to claim 1, it is characterised in that described electrical connector is flexible circuit board.
Linear vibration electric motor the most according to claim 1, it is characterised in that described main magnetic circuit system includes two relative spacings
The main magnet steel arranged and the first pole piece being located in described in two between main magnet steel, the magnetic pole homopolarity of main magnet steel described in two sets relatively
Putting, described voice coil loudspeaker voice coil is arranged around described first pole piece.
Linear vibration electric motor the most according to claim 8, it is characterised in that described linear vibration electric motor also includes being positioned at institute
Stating the secondary magnetic circuit system of main magnetic circuit system both sides, described secondary magnetic circuit system includes four secondary magnet steel, and described secondary magnet steel is the most relative
Arranging, the magnetic pole homopolarity of the described secondary magnet steel being oppositely arranged is oppositely arranged, and the polarity of magnetic pole that homopolarity is oppositely arranged is with described
The opposite polarity of the magnetic pole that main magnet steel homopolarity is oppositely arranged.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201610579194.4A CN106208613B (en) | 2016-07-21 | 2016-07-21 | Linear vibration electric motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610579194.4A CN106208613B (en) | 2016-07-21 | 2016-07-21 | Linear vibration electric motor |
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Publication Number | Publication Date |
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CN106208613A true CN106208613A (en) | 2016-12-07 |
CN106208613B CN106208613B (en) | 2018-09-21 |
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CN201610579194.4A Expired - Fee Related CN106208613B (en) | 2016-07-21 | 2016-07-21 | Linear vibration electric motor |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116989845A (en) * | 2023-07-06 | 2023-11-03 | 伊维氏传动系统(平湖)有限公司 | Detection equipment and detection method for production of photovoltaic connector joint terminal |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20010019942A (en) * | 1999-08-31 | 2001-03-15 | 김종수 | Vibration motor |
CN1653675A (en) * | 2002-07-16 | 2005-08-10 | Lg伊诺特株式会社 | Vibration motor and mounting structure of the vibration motor and mounting method of the vibration motor |
CN1655423A (en) * | 2004-02-13 | 2005-08-17 | 三星电机株式会社 | Bar type vibration motor |
CN1992474A (en) * | 2005-12-26 | 2007-07-04 | 比亚迪股份有限公司 | Flat vibrating motor for increasing vibration |
CN102820760A (en) * | 2012-01-06 | 2012-12-12 | 瑞声声学科技(深圳)有限公司 | Vibration motor, upper cover of vibration motor and production method of upper cover |
CN203368282U (en) * | 2013-08-12 | 2013-12-25 | 重庆市灵龙电子有限公司 | Linear vibration motor |
KR20160031904A (en) * | 2014-09-15 | 2016-03-23 | 주식회사 엠플러스 | Linear vibration motor |
-
2016
- 2016-07-21 CN CN201610579194.4A patent/CN106208613B/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20010019942A (en) * | 1999-08-31 | 2001-03-15 | 김종수 | Vibration motor |
CN1653675A (en) * | 2002-07-16 | 2005-08-10 | Lg伊诺特株式会社 | Vibration motor and mounting structure of the vibration motor and mounting method of the vibration motor |
CN1655423A (en) * | 2004-02-13 | 2005-08-17 | 三星电机株式会社 | Bar type vibration motor |
CN1992474A (en) * | 2005-12-26 | 2007-07-04 | 比亚迪股份有限公司 | Flat vibrating motor for increasing vibration |
CN102820760A (en) * | 2012-01-06 | 2012-12-12 | 瑞声声学科技(深圳)有限公司 | Vibration motor, upper cover of vibration motor and production method of upper cover |
CN203368282U (en) * | 2013-08-12 | 2013-12-25 | 重庆市灵龙电子有限公司 | Linear vibration motor |
KR20160031904A (en) * | 2014-09-15 | 2016-03-23 | 주식회사 엠플러스 | Linear vibration motor |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116989845A (en) * | 2023-07-06 | 2023-11-03 | 伊维氏传动系统(平湖)有限公司 | Detection equipment and detection method for production of photovoltaic connector joint terminal |
CN116989845B (en) * | 2023-07-06 | 2024-03-22 | 伊维氏传动系统(平湖)有限公司 | Detection equipment and detection method for production of photovoltaic connector joint terminal |
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