CN111478546B - High-sensitivity high-power broadband magnetoelectric exciter motor integrated piece - Google Patents
High-sensitivity high-power broadband magnetoelectric exciter motor integrated piece Download PDFInfo
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- CN111478546B CN111478546B CN201910519527.8A CN201910519527A CN111478546B CN 111478546 B CN111478546 B CN 111478546B CN 201910519527 A CN201910519527 A CN 201910519527A CN 111478546 B CN111478546 B CN 111478546B
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- 239000000725 suspension Substances 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 45
- 239000010959 steel Substances 0.000 claims description 45
- 230000035945 sensitivity Effects 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention belongs to the field of exciters, and particularly relates to a high-sensitivity high-power broadband magnetoelectric exciter motor integrated piece which comprises a shell cover body, wherein an elastic suspension, a magnetic conduction plate, a voice coil and an FPC (flexible printed circuit) plate are sequentially arranged in the shell cover body from top to bottom, a multistage magnetic circuit is arranged between the magnetic conduction plate and the voice coil, the multi-stage magnetic circuit has stronger driving force, a prestress structure can enable the multi-stage magnetic circuit to bear higher power, a multi-spiral structure can improve the bandwidth, a comprehensive screen mobile phone user can have better acoustic embodiment, and the space of a linear motor is saved.
Description
Technical Field
The invention belongs to the field of exciters, and particularly relates to a high-sensitivity high-power broadband magnetoelectric exciter motor integrated piece.
Background
The market trends towards full-screen mobile phones, and at present, two solutions are provided, namely a multilayer piezoelectric ceramic exciter and a magnetoelectric structure exciter. However, when the multilayer piezoelectric ceramic exciter is applied to a full-screen mobile phone, the low frequency is insufficient, so that the tone quality is sharp, and the user experience feeling is extremely poor; the excitation voltage is high, an additional power amplifier needs to be added, and the cost is increased. The frequency band of the magnetoelectric structure exciter of the full-face screen mobile phone in the current market is narrow, and the tone quality is hollow and not full. At present, mobile phones in the market are all receivers, and motors are separately used.
Along with the popularization of the 5G technology, more and more components of the mobile phone are provided, the internal installation space is smaller, the problems are solved in order to adapt to market demands, and a high-sensitivity high-power broadband magnetoelectric exciter motor integrated piece suitable for the comprehensive screen sounding technology is developed.
Summary of the invention
In order to solve the problems, the invention provides a high-sensitivity high-power broadband magnetoelectric exciter motor integrated part suitable for a full-screen sounding technology, which can be applied to the sounding of a receiver of a full-screen mobile phone and can replace a mobile phone motor to realize a vibration feedback function. Compared with the existing exciter in the market, the exciter has stronger driving force, the prestress structure can enable the exciter to bear larger power, and the multiple spiral structure can improve the frequency width. The method has the advantages that the comprehensive screen mobile phone user can have better acoustic embodiment, the space of a linear motor is saved, and the method is more suitable for the realization of a 5G mobile phone.
The invention creates the technical scheme for solving the technical problem as follows:
high sensitivity high power wide band magnetoelectric exciter motor integrative piece, including the shell cover body, its characterized in that, in the shell cover body, from top to bottom be elastic suspension, magnetic conduction board, voice coil loudspeaker voice coil and FPC board in proper order, wherein be equipped with multistage magnetic circuit between magnetic conduction board and the voice coil loudspeaker voice coil, include:
the first main magnetic steel and the first auxiliary pole piece are bonded to form a first magnetic circuit, and the first counterweight is bonded to the first magnetic circuit;
the second main magnetic steel, the second auxiliary pole piece and the first auxiliary magnetic steel are bonded to form a second magnetic circuit, and the magnetizing directions of the second main magnetic steel and the first auxiliary magnetic steel are opposite;
the third main magnetic steel, the main pole piece and the second auxiliary magnetic steel are bonded to form a third magnetic circuit, and the magnetizing directions of the third main magnetic steel and the second auxiliary magnetic steel are opposite;
the fourth main magnetic steel, the third auxiliary pole piece and the third auxiliary magnetic steel are bonded to form a fourth magnetic circuit, and the magnetizing directions of the fourth main magnetic steel and the third auxiliary magnetic steel are opposite;
the fifth main magnetic steel and the fourth auxiliary pole piece are bonded to form a fifth magnetic circuit, and the second counterweight is bonded to the fifth magnetic circuit;
the first magnetic circuit, the second magnetic circuit, the third magnetic circuit, the fourth magnetic circuit and the fifth magnetic circuit are simultaneously bonded with the magnetic conductive plate.
Further, the thickness of the elastic suspension is 0.2mm +/-0.003 mm.
Furthermore, the elastic suspension is of a multiple spiral structure and comprises S-shaped bends with two symmetrical ends, and the middle positions of the S-shaped bends are connected in a cross mode to form side protrusions.
According to the structure, the invention has the beneficial effects that:
high power: the vibration elastic suspension with the combination of the prestress and the multiple spiral structure has the advantages that the vibration suspension material has high elasticity, light weight, impact toughness and good fatigue resistance, the thickness is 0.2mm +/-0.003 mm, the vibration elastic suspension material can generate larger elastic deformation when being electrified and loaded, the deformation of the vibration elastic sheet disappears and returns to the original shape after being electrified, the vibration elastic suspension material has good deformation recovery performance, the prestress structure can increase the bearing power of a product, and meanwhile, the multiple spiral structure is matched with the prestress structure to be applied simultaneously, so that the vibration elastic suspension material can bear larger high power;
high sensitivity: the sealed inner and outer magnetic steels are matched with the main and auxiliary magnetic fluxes to realize power transmission under the action of the magnetic force, the sealed structure can keep a large amount of magnetism of the magnetic steels, and according to the Faraday's law of electromagnetic induction, the larger the magnetic flux is, the larger the force of certain current moving in a magnetic field is.
Broadband: the shell fragment designs multiple helical structure, and the centre is alternately, and the amplitude is big, can bear bigger power, guarantees undistorted under high-power, compares with current structure, can promote the acoustic pressure in 4-8 kHz's frequency band, can cooperate EQ tuning better, has abundant audio.
The motor performance is as follows: two counter weights are added on the auxiliary pole piece, so that the mass of the vibration system is improved to a greater extent, the driving force of the vibration system is improved to a greater extent, and the motor performance is higher.
Drawings
The foregoing and other objects, features and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
Fig. 1 is a block diagram of the invention.
Detailed Description
As shown in fig. 1, the integrative piece of high sensitivity high power wide band magnetoelectric exciter motor, including the housing cover body 1, in the housing cover body, from top to bottom be elastic suspension 2, magnetic conductive plate 3, voice coil loudspeaker voice coil 4 and FPC board 5 in proper order, wherein be equipped with multistage magnetic circuit between magnetic conductive plate 3 and the voice coil loudspeaker voice coil 4, include:
the first main magnetic steel 6 and the first auxiliary pole piece 7 are bonded to form a first magnetic circuit, and the first counterweight 8 is bonded to the first magnetic circuit;
the second main magnetic steel 9, the second auxiliary pole piece 10 and the first auxiliary magnetic steel 11 are bonded to form a second magnetic circuit, and the magnetizing directions of the second main magnetic steel 9 and the first auxiliary magnetic steel 10 are opposite;
the third main magnetic steel 12, the main pole piece 13 and the second auxiliary magnetic steel 14 are bonded to form a third magnetic circuit, and the magnetizing directions of the third main magnetic steel 12 and the second auxiliary magnetic steel 14 are opposite;
the fourth main magnetic steel 15, the third auxiliary pole piece 16 and the third auxiliary magnetic steel 17 are bonded to form a fourth magnetic circuit, and the magnetizing directions of the fourth main magnetic steel 15 and the third auxiliary magnetic steel 17 are opposite;
the fifth main magnetic steel 18 and the fourth auxiliary pole piece 19 are bonded to form a fifth magnetic circuit, and the second counterweight 20 is bonded to the fifth magnetic circuit;
the first magnetic circuit, the second magnetic circuit, the third magnetic circuit, the fourth magnetic circuit and the fifth magnetic circuit are simultaneously bonded with the magnetic conductive plate 3.
The thickness of the elastic suspension 2 is 0.2mm +/-0.003 mm.
The elastic suspension 2 is of a multi-spiral structure and comprises S-shaped bends with two symmetrical ends, and the middle positions of the S-shaped bends are connected in a cross mode to form side protrusions. The upper end of the spring suspension is welded with the shell, and the lower end of the spring suspension is welded with the magnetic conduction plate. The shell fragment designs multiple helical structure, and the centre is alternately, and the amplitude is big, can bear bigger power, guarantees undistorted under high-power, compares with current structure, can promote the acoustic pressure in 4-8 kHz's frequency band, can cooperate EQ tuning better, has abundant audio.
The shell and the cover plate are installed through the clamping groove and are welded together through laser finally.
The voice coil generates a magnetic field when an electrical signal turns on the actuator. First magnetic circuit, second magnetic circuit, third magnetic circuit, fourth magnetic circuit, fifth magnetic circuit that circular telegram voice coil loudspeaker voice coil and permanent magnet are constituteed, produce electromagnetic induction, the voice coil loudspeaker voice coil cuts the magnetic line of force, because the voice coil loudspeaker voice coil is fixed, the permanent magnet motion drives the vibration system vibration, and the power that the vibration produced promotes the screen or the center vibration of cell-phone then and makes a sound.
Because three sets of main and auxiliary magnetic designs are adopted in the design, the magnetic steel and the balance weight are skillfully combined, and very large acceleration can be generated in the vibration process, so that the motor can still be used as a motor.
Claims (3)
1. High sensitivity high power wide band magnetoelectric exciter motor integrative piece, including the shell cover body, its characterized in that, in the shell cover body, from top to bottom be elastic suspension, magnetic conduction board, voice coil loudspeaker voice coil and FPC board in proper order, wherein be equipped with multistage magnetic circuit between magnetic conduction board and the voice coil loudspeaker voice coil, include:
the first main magnetic steel and the first auxiliary pole piece are bonded to form a first magnetic circuit, and the first counterweight is bonded to the first magnetic circuit;
the second main magnetic steel, the second auxiliary pole piece and the first auxiliary magnetic steel are bonded to form a second magnetic circuit, and the magnetizing directions of the second main magnetic steel and the first auxiliary magnetic steel are opposite;
the third main magnetic steel, the main pole piece and the second auxiliary magnetic steel are bonded to form a third magnetic circuit, and the magnetizing directions of the third main magnetic steel and the second auxiliary magnetic steel are opposite;
the fourth main magnetic steel, the third auxiliary pole piece and the third auxiliary magnetic steel are bonded to form a fourth magnetic circuit, and the magnetizing directions of the fourth main magnetic steel and the third auxiliary magnetic steel are opposite;
the fifth main magnetic steel and the fourth auxiliary pole piece are bonded to form a fifth magnetic circuit, and the second counterweight is bonded to the fifth magnetic circuit;
the first magnetic circuit, the second magnetic circuit, the third magnetic circuit, the fourth magnetic circuit and the fifth magnetic circuit are simultaneously bonded with the magnetic conductive plate;
the voice coil is fixed, the permanent magnet moves, the force generated by the vibration of the permanent magnet pushes the screen or the middle frame of the mobile phone to vibrate so as to make a sound, and the acceleration generated by the vibration meets the use requirement of the motor.
2. The integral piece of high-sensitivity high-power broadband magnetoelectric actuator motor according to claim 1, wherein the thickness of said elastic suspension is 0.2mm ± 0.003 mm.
3. The integral member of high-sensitivity high-power broadband magnetoelectric actuator motor according to claim 2, wherein said elastic suspension is a multiple spiral structure comprising S-shaped bends with symmetrical ends, and lateral protrusions are formed by cross-connecting the middle positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910519527.8A CN111478546B (en) | 2019-06-17 | 2019-06-17 | High-sensitivity high-power broadband magnetoelectric exciter motor integrated piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910519527.8A CN111478546B (en) | 2019-06-17 | 2019-06-17 | High-sensitivity high-power broadband magnetoelectric exciter motor integrated piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111478546A CN111478546A (en) | 2020-07-31 |
| CN111478546B true CN111478546B (en) | 2020-11-24 |
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| CN201910519527.8A Active CN111478546B (en) | 2019-06-17 | 2019-06-17 | High-sensitivity high-power broadband magnetoelectric exciter motor integrated piece |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201345601Y (en) * | 2008-12-26 | 2009-11-11 | 中国科学院沈阳自动化研究所 | Electromagnetic driver of capsule robot |
| KR101090428B1 (en) * | 2009-07-07 | 2011-12-07 | 삼성전기주식회사 | Linear oscillator |
| KR20150078045A (en) * | 2013-12-30 | 2015-07-08 | 박준 | Linear Actuator |
| CN204967592U (en) * | 2015-09-23 | 2016-01-13 | 歌尔声学股份有限公司 | Linear vibrating motor |
| CN105529898B (en) * | 2016-02-05 | 2018-07-27 | 歌尔股份有限公司 | Linear vibration motor |
| CN105990927B (en) * | 2016-06-01 | 2019-02-15 | 歌尔股份有限公司 | Magnet unit and a kind of linear vibration motor for vibrating motor |
| CN205960928U (en) * | 2016-07-21 | 2017-02-15 | 瑞声科技(新加坡)有限公司 | Linear vibration motor |
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