CN111182105B - High-sensitivity high-power broadband magnetoelectric exciter suitable for comprehensive screen sound production - Google Patents
High-sensitivity high-power broadband magnetoelectric exciter suitable for comprehensive screen sound production Download PDFInfo
- Publication number
- CN111182105B CN111182105B CN201911421768.5A CN201911421768A CN111182105B CN 111182105 B CN111182105 B CN 111182105B CN 201911421768 A CN201911421768 A CN 201911421768A CN 111182105 B CN111182105 B CN 111182105B
- Authority
- CN
- China
- Prior art keywords
- magnetic steel
- magnetic
- voice coil
- main
- pole piece
- 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.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/10—Telephone receivers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention belongs to a mobile phone exciter, and relates to a high-sensitivity high-power broadband magnetoelectric exciter suitable for full-screen sound generation, which comprises a closed shell, wherein a circuit board is fixed on the side wall of the bottom in the shell, a voice coil is arranged on the upper side of the circuit board, a magnetic conduction plate is arranged on the upper side of the voice coil, a spring plate is arranged on the upper side of the magnetic conduction plate, the lower end of the voice coil is fixedly connected with the circuit board, the centers of the circuit board, the voice coil, the magnetic conduction plate, the spring plate and the shell are positioned on the same vertical supporting line, a magnetic circuit module is arranged between the circuit board and the magnetic conduction plate, the spring plate is of a downward convex arc structure, the downward convex most part of the spring plate is connected with the magnetic conduction plate, two ends of the spring plate are connected with the inner wall of the shell, the spring plate comprises two strip parts and first connecting, High power, wide frequency, small volume, and is suitable for 5G mobile phone.
Description
Technical Field
The invention belongs to a mobile phone exciter, and relates to a high-sensitivity high-power broadband magnetoelectric exciter suitable for comprehensive screen sound production.
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 on the market are all receivers, motors are used separately, and with the popularization of the 5G technology, the number of components of the mobile phones is increased, the internal installation space is smaller originally, and the existing structure cannot meet the use requirement.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a high-sensitivity high-power broadband magnetoelectric exciter suitable for comprehensive screen sound generation, which has the characteristics of high sensitivity, high power and broadband, is small in size and is suitable for 5G mobile phones.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a high-sensitivity high-power broadband magnetoelectric exciter suitable for comprehensive screen sound generation comprises a closed shell, wherein a circuit board is fixed on the inner bottom side wall of the shell, a voice coil is arranged on the upper side of the circuit board, a magnetic conductive plate is arranged on the upper side of the voice coil, an elastic sheet is arranged on the upper side of the magnetic conductive plate, the lower end of the voice coil is fixedly connected with the circuit board, the centers of the circuit board, the voice coil, the magnetic conductive plate, the elastic sheet and the shell are positioned on the same vertical straight line, a magnetic circuit space for arranging a magnetic circuit is formed between the circuit board and the magnetic conductive plate, a magnetic circuit module is arranged in the magnetic circuit space and comprises a third magnetic circuit arranged inside the voice coil, a first magnetic circuit arranged on the left side of the voice coil, a second magnetic circuit arranged on the front side of the voice coil, a fourth magnetic circuit arranged on the rear side of the voice coil and a fifth magnetic circuit arranged, the downward bulge of shell fragment is located and is connected with the magnetic conduction board, the both ends and the shells inner wall connection of shell fragment, the shell fragment includes the first connecting portion at twice bar portion, bar portion both ends, the centre department of bar portion is equipped with the second connecting portion of being connected with the magnetic conduction board, the lamellar body of bar portion both sides upwards is the arc smoothly to both sides and extends, the first connecting portion and the casing of bar portion tip are connected, the lamellar body that bar portion is close to first connecting portion is equipped with the multistage and is the section of coiling of S type.
Furthermore, the first magnetic circuit comprises a first main magnetic steel arranged on the left side of the voice coil in the shell, and a first auxiliary pole piece adhered to the bottom side of the first main magnetic steel, and the upper part of the first main magnetic steel is connected with the corresponding position of the left end of the magnetic conductive plate.
Furthermore, a first balancing weight is bonded to the bottom of the first auxiliary pole piece.
Furthermore, the fifth magnetic circuit comprises fifth main magnetic steel arranged in the shell and positioned on the right side of the voice coil, and a fourth auxiliary pole piece bonded to the bottom side of the fifth main magnetic steel, and the upper part of the fifth main magnetic steel is connected with the corresponding position of the right end of the magnetic conduction plate.
Furthermore, a second balancing weight is bonded to the bottom of the fourth auxiliary pole piece.
Furthermore, the third magnetic circuit comprises a third main magnetic steel arranged inside the voice coil, a main pole piece bonded to the bottom of the third main magnetic steel, and a second auxiliary magnetic steel bonded to the bottom of the main pole piece, the magnetizing directions of the third main magnetic steel and the second auxiliary magnetic steel are opposite, and the third main magnetic steel is connected with the corresponding position in the middle of the magnetic conductive plate.
Furthermore, the second magnetic circuit comprises a second main magnetic steel arranged on the front side of the voice coil, a second auxiliary pole piece bonded to the bottom of the second main magnetic steel, and a first auxiliary magnetic steel bonded to the bottom of the second auxiliary pole piece, the magnetizing directions of the second main magnetic steel and the first auxiliary magnetic steel are opposite, and the second main magnetic steel is connected with the corresponding position of the magnetic conductive plate.
Furthermore, the fourth magnetic circuit comprises a fourth main magnetic steel arranged at the rear side of the voice coil, a third auxiliary pole piece bonded to the bottom of the fourth main magnetic steel, and a third auxiliary magnetic steel bonded to the bottom of the third auxiliary pole piece, the fourth main magnetic steel and the third auxiliary magnetic steel are opposite in magnetizing direction, and the fourth main magnetic steel is connected with the corresponding position of the magnetic conductive plate.
Furthermore, the circuit board is an FPC.
Furthermore, the two strip-shaped parts are symmetrical front and back about the center of the elastic sheet.
The invention has the beneficial effects that: by adopting the scheme, the exciter has better vibration and screen sounding effects, is suitable for sounding of a receiver of a full-screen mobile phone, can replace a mobile phone motor to realize a vibration feedback function, has stronger driving force, can bear larger power, has the characteristics of frequency width and high sensitivity compared with the existing exciter in the market, enables a full-screen mobile phone user to have better acoustic embodiment, saves the space of a linear motor, has small volume and is more suitable for the use of a 5G mobile phone.
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 schematic diagram of an explosive structure according to an embodiment of the present invention.
Fig. 2 is a schematic structure of a spring plate according to an embodiment of the present invention.
Wherein: 1 is the shell, 2 is the apron, 3 is the circuit board, 4 is the voice coil loudspeaker voice coil, 5 is magnetic conduction board, 6 is the shell fragment, 61 is the bar portion, 62 is first connecting portion, 63 is second connecting portion, 64 is the section of coiling, 7 is first main magnet steel, 8 is first auxiliary pole piece, 9 is second main magnet steel, 10 is the vice pole piece of second, 11 is first auxiliary magnet steel 11, 12 is third main magnet steel, 13 is main pole piece, 14 is the vice magnet steel of second, 16 is the vice pole piece of third, 17 is the vice magnet steel of third, 18 is fifth main magnet steel, 19 is the vice pole piece of fourth, 20 is first balancing weight, 21 is the second balancing weight.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1: referring to fig. 1, a high sensitivity high power wide band magnetoelectric actuator suitable for comprehensive screen is sounded, including an inclosed casing, the casing is by shell 1, apron 2 of shell bottom constitutes, shell 1 bottom is equipped with the opening, the opening part is equipped with the cooperation groove, be equipped with the structure on the apron and cooperate the anastomotic connection arch of groove, it makes apron and shell be connected the location to connect protruding cooperation groove cooperation, the shell passes through laser welding with the apron junction, make to have inclosed cavity in the casing, use the length direction of shell as left and right sides direction, width direction is the fore-and-aft direction, the outer cuboid structure of casing, the outer inclosed cavity of cuboid form of cavity.
The upper surface of the cover plate 2 is bonded with a circuit board 3 through glue, the circuit board 3 is preferably FPC, the weight is light, the vibration effect is favorably improved, the use is convenient, the weight is reduced, the upper side of the circuit board 3 is provided with a voice coil 4, the bottom of the voice coil 4 is bonded with the circuit board, the welding spot of a metal wire circuit board of the voice coil is welded, the upper side of the voice coil 4 is provided with a magnetic conductive plate 5, the upper side of the magnetic conductive plate 5 is provided with a spring sheet 6, the circuit board 3, the voice coil 4, the magnetic conductive plate 5, the spring sheet 6 and the center of the shell are positioned on the same vertical straight line, a magnetic circuit space for arranging the magnetic circuit is formed between the circuit board 3 and the magnetic conductive plate 5, a magnetic circuit module is arranged at the magnetic circuit space, the magnetic circuit module comprises a third magnetic circuit arranged inside the voice coil 4, a first magnetic circuit arranged on the left side of the voice coil, the first magnetic circuit comprises a first main magnetic steel 7 arranged on the left side of the voice coil 4 in the shell, a first auxiliary pole piece 8 adhered to the bottom side of the first main magnetic steel 7, the upper part of the first main magnetic steel 7 is adhered to the corresponding position of the bottom side of the left end of the magnetic conduction plate 5, the second magnetic circuit comprises a second main magnetic steel 9 arranged on the front side of the voice coil 4, a second auxiliary pole piece 10 adhered to the bottom of the second main magnetic steel 9, and a first auxiliary magnetic steel 11 adhered to the bottom of the second auxiliary pole piece 10, the magnetizing directions of the second main magnetic steel 9 and the first auxiliary magnetic steel 11 are opposite, the corresponding position of the bottom side of the second main magnetic steel 9 and the magnetic conduction plate 5 is adhered, the third magnetic circuit comprises a third main magnetic steel 12 arranged inside the voice coil 4, a main pole piece 13 adhered to the bottom of the third main magnetic steel 12, and a second auxiliary magnetic steel 14 adhered to the bottom of the main pole piece 13, the magnetizing directions of the third main magnetic steel 12 and the second auxiliary magnetic steel 14 are opposite, the fourth magnetic circuit comprises a fourth main magnetic steel 15 arranged at the rear side of the voice coil 4, a third auxiliary pole piece 16 bonded to the bottom of the fourth main magnetic steel 15, and a third auxiliary magnetic steel 17 bonded to the bottom of the third auxiliary pole piece 16, the magnetizing directions of the fourth main magnetic steel 15 and the third auxiliary magnetic steel 17 are opposite, the fourth main magnetic steel 15 is bonded to the corresponding position of the bottom end face of the magnetic conduction plate 5, the fifth magnetic circuit comprises a fifth main magnetic steel 18 arranged on the right side of the voice coil 4 in the shell and a fourth auxiliary pole piece 19 bonded to the bottom side of the fifth main magnetic steel 18, the upper portion of the fifth main magnetic steel 18 is bonded to the corresponding position of the bottom end face of the right end of the magnetic conduction plate 5, the arc-shaped elastic sheet 6 is made of metal, and has high elasticity, light weight, impact toughness and good fatigue resistance, the thickness is 0.2mm +/-0.003 mm, and the elastic.
The circuit board is connected with a circuit, power is supplied to the voice coil, an electric signal is connected with the exciter, the voice coil generates a magnetic field, a first magnetic circuit, a second magnetic circuit, a third magnetic circuit, a fourth magnetic circuit and a fifth magnetic circuit which are formed by the electrified voice coil and the permanent magnet generate electromagnetic induction, the voice coil cuts magnetic lines, as the voice coil is fixed, the first magnetic circuit, the second magnetic circuit, the third magnetic circuit, the fourth magnetic circuit and the fifth magnetic circuit are linked with the magnetic conduction sheet to vibrate integrally, the shell is driven to vibrate under the action of the elastic sheet, the force generated by vibration pushes the screen of the mobile phone to vibrate, the outer part of the shell is connected with the plane frame body or the frame, so that the screen sounds, the voice coil adopts a runway-shaped structure, the voice coil divides the magnetic circuit space into five parts which are used for arranging the five magnetic circuits, the space in the shell is fully, the vibration motor can generate very large acceleration in the vibration process, so that the vibration motor can be used as a motor and can replace the motor, and compared with a linear motor, the vibration motor is smaller in size, small in occupied space, suitable for being applied to a 5G mobile phone with small size and suitable for being applied to a place which is small in size and needs vibration excitation.
The first magnetic circuit, the fifth magnetic circuit are bilaterally symmetrical about the center of the shell, the second magnetic circuit and the fourth magnetic circuit are symmetrical about the center of the shell, the first counterweight 21 is bonded at the bottom of the first auxiliary pole piece 8, the second counterweight 20 is bonded at the bottom of the fourth auxiliary pole piece 19, the masses of the first counterweight 21 and the second counterweight 20 are equal, the magnetic steel and the counterweight are skillfully combined, so that the vibration of the magnetic circuit system is balanced, the amplitude is enlarged, the vibration effect of the magnetic circuit module is fully exerted, the amplitude is enlarged, the elastic sheet forms a vibration elastic suspension of the magnetic conductive plate and the magnetic circuit module, after the voice coil is powered on, the magnetic conductive plate and the magnetic circuit module vibrate, the vibration suspension can generate larger elastic deformation, the deformation of the vibration elastic sheet disappears and returns to the original shape after the voice coil is powered off, and the good deformation recovery performance is achieved, referring to fig. 2, the specific elastic sheet, The first connecting parts 62 at the two ends of the bar-shaped part 61 are symmetrical with respect to the center of the elastic sheet, the second connecting part 63 connected with the magnetic conduction plate 5 is arranged in the middle of the bar-shaped part 61, the sheet bodies at the two sides of the bar-shaped part 61 smoothly extend upwards in an arc shape towards the two sides, the second connecting part is the most downward convex part of the elastic sheet, the two ends of the elastic sheet are symmetrical with respect to the most downward convex part of the elastic sheet, the first connecting part 61 is used for being connected with the inner wall of the shell, the first connecting part 62 and the second connecting part 63 are both in a plane structure, the structural strength connected with the shell or the magnetic conduction sheet is improved, the connection failure is effectively avoided, the elastic sheet can fully exert the elastic effect and generate larger elastic deformation, the sheet body of the bar-shaped part 61 close to the first connecting part 62 is provided with a plurality of S-shaped coiling sections 64, the coiling sections, can bear bigger power to under powerful the transferring, the vibration keeps steadily, undistorted, the both ends and the casing of arc shell fragment are connected, the shell fragment is middle to be connected with the magnetic conduction board, the magnetic conduction board floats under magnetic circuit module's effect, make shell fragment self have stress, the shell fragment is prestressing force structure, prestressing force structure can increase the product and bear power, the many coiling section structure combined action of prestressing force structure cooperation make the shell fragment can bear bigger high power. The balance weights are added on the first auxiliary pole piece and the fourth auxiliary pole piece, so that the quality 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.
The exciter has better vibration effect, has better plane sound production effect simultaneously, has the characteristic of high power, high sensitivity, wide band, and the high power mainly embodies: the vibration elastic suspension is formed by the elastic sheets with the prestress and coiling section structures, the vibration suspension material has high elasticity, light weight, impact toughness and good fatigue resistance, can generate larger elastic deformation when electrified and loaded, the deformation of the vibration elastic sheets disappears and returns to the original shape after the electricity is removed, the vibration elastic suspension 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 can bear larger high power; the high sensitivity is mainly reflected in that: 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, so that the magnetic steel has higher sensitivity; the broadband is mainly reflected in that: the elastic sheet has large amplitude, can bear larger power, ensures no distortion under high power, can improve the sound pressure in a frequency band of 4-8kHz compared with the prior structure, can better match EQ tuning, and has rich sound effect.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiment according to the present invention are within the scope of the present invention.
Claims (3)
1. The utility model provides a be applicable to comprehensive screen sound production high sensitivity high power wide band magnetoelectric exciter, includes an inclosed casing, its characterized in that: the magnetic circuit module comprises a third magnetic circuit arranged in the voice coil, a first magnetic circuit arranged on the left side of the voice coil, a second magnetic circuit arranged on the front side of the voice coil, a fourth magnetic circuit arranged on the rear side of the voice coil and a fifth magnetic circuit arranged on the right side of the voice coil, the spring plate is of a downward convex arc structure, the two ends of the spring plate are bilaterally symmetrical about the downward most convex part of the spring plate, the downward most convex part of the spring plate is connected with the magnetic conduction plate, the two ends of the spring plate are connected with the inner wall of the shell, and the spring plate comprises two strip-shaped parts and first connecting parts at the two ends of the strip-shaped parts, the middle of the strip-shaped part is provided with a second connecting part connected with the magnetic conduction plate, the sheet bodies on two sides of the strip-shaped part smoothly extend upwards in an arc shape towards two sides, the first connecting part is connected with the shell, and the sheet body of the strip-shaped part close to the first connecting part is provided with a plurality of S-shaped coiling sections; the first magnetic circuit comprises first main magnetic steel arranged on the left side of the voice coil in the shell and a first auxiliary pole piece bonded to the bottom side of the first main magnetic steel, and the upper part of the first main magnetic steel is connected with the corresponding position of the left end of the magnetic conduction plate; a first balancing weight is bonded at the bottom of the first auxiliary pole piece; the fifth magnetic circuit comprises fifth main magnetic steel arranged on the right side of the voice coil in the shell and a fourth auxiliary pole piece bonded to the bottom side of the fifth main magnetic steel, and the upper part of the fifth main magnetic steel is connected with the corresponding position of the right end of the magnetic conduction plate; a second balancing weight is bonded at the bottom of the fourth auxiliary pole piece; the third magnetic circuit comprises third main magnetic steel arranged in the voice coil, a main pole piece bonded at the bottom of the third main magnetic steel and second auxiliary magnetic steel bonded at the bottom of the main pole piece, the magnetizing directions of the third main magnetic steel and the second auxiliary magnetic steel are opposite, and the third main magnetic steel is connected with the corresponding position in the middle of the magnetic conducting plate; the second magnetic circuit comprises second main magnetic steel arranged on the front side of the voice coil, a second auxiliary pole piece bonded to the bottom of the second main magnetic steel, and first auxiliary magnetic steel bonded to the bottom of the second auxiliary pole piece, the magnetizing directions of the second main magnetic steel and the first auxiliary magnetic steel are opposite, and the second main magnetic steel is connected with the corresponding position of the magnetic conducting plate; the fourth magnetic circuit comprises a fourth main magnetic steel arranged at the rear side of the voice coil, a third auxiliary pole piece bonded at the bottom of the fourth main magnetic steel, and a third auxiliary magnetic steel bonded at the bottom of the third auxiliary pole piece, the magnetizing directions of the fourth main magnetic steel and the third auxiliary magnetic steel are opposite, and the fourth main magnetic steel is connected with the corresponding position of the magnetic conductive plate.
2. The broadband magnetoelectric actuator applicable to full-screen sound generation, high sensitivity and high power of claim 1 is characterized in that: the circuit board is FPC.
3. The broadband magnetoelectric actuator applicable to full-screen sound generation, high sensitivity and high power of claim 1 is characterized in that: the two strip-shaped parts are symmetrical front and back about the center of the elastic sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911421768.5A CN111182105B (en) | 2019-12-31 | 2019-12-31 | High-sensitivity high-power broadband magnetoelectric exciter suitable for comprehensive screen sound production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911421768.5A CN111182105B (en) | 2019-12-31 | 2019-12-31 | High-sensitivity high-power broadband magnetoelectric exciter suitable for comprehensive screen sound production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111182105A CN111182105A (en) | 2020-05-19 |
| CN111182105B true CN111182105B (en) | 2020-08-28 |
Family
ID=70652487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911421768.5A Active CN111182105B (en) | 2019-12-31 | 2019-12-31 | High-sensitivity high-power broadband magnetoelectric exciter suitable for comprehensive screen sound production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111182105B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208821081U (en) * | 2018-10-16 | 2019-05-03 | 歌尔科技有限公司 | Electromagnetic driver and screen sounding device |
| CN109819383A (en) * | 2019-01-30 | 2019-05-28 | 汉得利（常州）电子股份有限公司 | A kind of twin shaft solid vibration sense touch feedback driver |
| CN110177322A (en) * | 2019-05-15 | 2019-08-27 | 瑞声光电科技(常州)有限公司 | Screen sounding driver and electronic equipment |
-
2019
- 2019-12-31 CN CN201911421768.5A patent/CN111182105B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208821081U (en) * | 2018-10-16 | 2019-05-03 | 歌尔科技有限公司 | Electromagnetic driver and screen sounding device |
| CN109819383A (en) * | 2019-01-30 | 2019-05-28 | 汉得利（常州）电子股份有限公司 | A kind of twin shaft solid vibration sense touch feedback driver |
| CN110177322A (en) * | 2019-05-15 | 2019-08-27 | 瑞声光电科技(常州)有限公司 | Screen sounding driver and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111182105A (en) | 2020-05-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106954147B (en) | Electronic device | |
| CN110177322B (en) | Screen sound production exciter and electronic equipment | |
| US11057711B2 (en) | Speaker | |
| US11206492B2 (en) | Screen sounding exciter and electronic device | |
| CN112929801B (en) | Speaker and electronic apparatus | |
| US20200045459A1 (en) | Speaker Assembly | |
| CN210745533U (en) | Anti-vibration loudspeaker | |
| US20210136500A1 (en) | Screen sounding exciter and electronic device | |
| CN110166902B (en) | Sound production device | |
| CN214177551U (en) | Sound production device | |
| CN210093515U (en) | Sound production device | |
| US20200314548A1 (en) | Speaker | |
| CN111182105B (en) | High-sensitivity high-power broadband magnetoelectric exciter suitable for comprehensive screen sound production | |
| CN201967116U (en) | Electroacoustic transducer | |
| CN201967111U (en) | Energy converter | |
| CN115314812A (en) | Double-diaphragm telephone receiver and electronic equipment | |
| CN213462288U (en) | Sound production device | |
| CN103428618A (en) | Armature device used for moving-iron type loudspeaker or receiver | |
| CN210183527U (en) | Sound producing device | |
| KR101154253B1 (en) | Flat type speaker having voice coil plate of three dimensional track type | |
| CN209345399U (en) | A kind of receiver | |
| CN204442681U (en) | There is the receiver of good power armature | |
| CN111478546B (en) | High-sensitivity high-power broadband magnetoelectric exciter motor integrated piece | |
| CN209497587U (en) | A kind of receiver | |
| CN210093500U (en) | Sound production device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |