CN109495824A - Magnetic circuit of loudspeaker and digital speaker - Google Patents
Magnetic circuit of loudspeaker and digital speaker Download PDFInfo
- Publication number
- CN109495824A CN109495824A CN201811629052.XA CN201811629052A CN109495824A CN 109495824 A CN109495824 A CN 109495824A CN 201811629052 A CN201811629052 A CN 201811629052A CN 109495824 A CN109495824 A CN 109495824A
- Authority
- CN
- China
- Prior art keywords
- magnetizer
- magnetic
- gap
- circuit
- 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.)
- Granted
Links
Classifications
-
- 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
- H04R9/06—Loudspeakers
-
- 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
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The present invention relates to loudspeaker fields, specially magnetic circuit of loudspeaker and digital speaker, are powered to conductive winding, and the magnetic field strength at magnetic gap is larger, reduce the exhaustive exploitation of non-renewable material；The voice coil for being placed in magnetic gap shakes according to magnetic force change, and then vibrating diaphragm vibration is driven to carry out sounding.
Description
Technical field
The present invention relates to loudspeaker fields, more particularly, to magnetic circuit of loudspeaker and digital speaker.
Background technique
Loudspeaker is a kind of energy transducer for electric signal being changed into acoustical signal, the shadow of the performance superiority and inferiority of loudspeaker to sound quality
Sound is very big.Loudspeaker is a most weak device in stereo set, and for acoustics, it is one most heavy again
The component wanted.
Notification number is that the Chinese invention of CN204090139U discloses a kind of loudspeaker unit comprising: bracket；Magnetic circuit,
It is supported by bracket；Voice coil is placed in the magnetic gap of magnetic circuit, and can be vibrated according to magnetic force change；Vibrating diaphragm, peripheral end pass through
Ring is connected to bracket, and inner peripheral end thereof is connected to voice coil by centring disk, and magnetic circuit is by upper clamp plate, magnet and magnetizer (T
Iron) it organizes merging bonding and constitutes, cylindric magnetic gap is formed between the medial surface and magnetizer of upper clamp plate.
Wherein the quality of magnet has larger impact to the sensitivity of loudspeaker, and the preferable magnet of quality uses permanent magnetism system
At limited material.
Summary of the invention
An object of the present invention is to provide magnetic circuit of loudspeaker, has the effect of reducing using for permanent magnet.
Above-mentioned purpose of the invention has the technical scheme that
Magnetic circuit of loudspeaker, including the magnetizer being annularly arranged, the side of the magnetizer is disconnected, and the magnetizer is disconnected with it
Locate opposite side and is formed with conducting magnetic column, shape between the conducting magnetic column and the gap of magnetizer towards the gap protrusion of opposite side
At there is magnetic gap, the conducting magnetic column is segmented magnetizer, and each Duan Shangjun of the magnetizer is wound with conductive winding.
It by using above-mentioned technical proposal, is powered to conductive winding, the magnetic field strength at magnetic gap is larger, instead of existing
There is the magnet in technology to generate magnetic field, reduce the use of the exotic materials such as permanent magnet, reduces excessively opening for non-renewable material
It adopts.
The present invention is further arranged to: the conductive winding is connected with the control circuit of the current switching of control thereon.
By using above-mentioned technical proposal, the electric current of conductive winding is flowed through by control circuit adjustment, is kept at magnetic gap
Magnetic field strength.
The present invention is further arranged to: the control circuit includes the control pipe for being connected to the current supply circuit of conductive winding,
The control pipe receives pwm control signal to control its on-off.
By using above-mentioned technical proposal, the on-off of control control pipe is controlled to which control is flowed through by pwm control signal
The electric current of conductive winding, to control the magnetic field strength at magnetic gap.
The second object of the present invention is to provide magnetic circuit of loudspeaker, have the effect of reducing using for permanent magnet.
Above-mentioned purpose of the invention has the technical scheme that
Magnetic circuit of loudspeaker, the magnetizer being annularly arranged including two are connected in right-angled intersection between two magnetizers, and two are led
An infall disconnects magnet wherein, and the gap protrusion of another infall towards the opposite side of two magnetizers is formed with magnetic conduction
Column is formed with magnetic gap between the conducting magnetic column and the gap of magnetizer, the conducting magnetic column is segmented magnetizer, described to lead
Each Duan Shangjun of magnet is wound with conductive winding.
It by using above-mentioned technical proposal, is powered to conductive winding, the magnetic field strength at magnetic gap is larger, instead of existing
There is the magnet in technology to generate magnetic field, reduce the use of the exotic materials such as permanent magnet, reduces excessively opening for non-renewable material
It adopts, and the breakpoint of magnetizer is distributed around conducting magnetic column, the magnetic field strength in magnetic gap is more concentrated, and sensitivity is higher, at magnetic gap
Magnetic field strength can be controlled by adjusting the electric current for flowing through conductive winding, adapt to the needs of various usage scenarios.
The present invention is further arranged to: the conductive winding is connected with the control circuit of the current switching of control thereon.
By using above-mentioned technical proposal, the electric current of conductive winding is flowed through by control circuit adjustment, is kept at magnetic gap
Magnetic field strength.
The present invention is further arranged to: the control circuit includes the control pipe for being connected to the current supply circuit of conductive winding,
The control pipe receives pwm control signal to control its on-off.
By using above-mentioned technical proposal, the on-off of control control pipe is controlled to which control is flowed through by pwm control signal
The electric current of conductive winding, to control the magnetic field strength at magnetic gap.
The third object of the present invention is to provide magnetic circuit of loudspeaker, has the effect of reducing using for permanent magnet.
Above-mentioned purpose of the invention has the technical scheme that
Magnetic circuit of loudspeaker is in interconnection between the magnetizer including several magnetizers being annularly arranged, and magnetizer it
Between crosspoint be located at same place, an infall disconnects several magnetizers wherein, another infall direction of several magnetizers
The gap protrusion of opposite side is formed with conducting magnetic column, and magnetic gap is formed between the conducting magnetic column and the gap of magnetizer, described to lead
Magnetic pole is segmented magnetizer, and each Duan Shangjun of the magnetizer is wound with conductive winding.
It by using above-mentioned technical proposal, is powered to conductive winding, the magnetic field strength at magnetic gap is larger, instead of existing
There is the magnet in technology to generate magnetic field, reduce the use of the exotic materials such as permanent magnet, reduces excessively opening for non-renewable material
It adopts, and the breakpoint of magnetizer is distributed around conducting magnetic column, the magnetic field strength in magnetic gap is more concentrated, and sensitivity is higher, at magnetic gap
Magnetic field strength can be controlled by adjusting the electric current for flowing through conductive winding, adapt to the needs of various usage scenarios.
The fourth object of the present invention is to provide digital speaker, has the effect of reducing using for permanent magnet.
Above-mentioned purpose of the invention has the technical scheme that
Digital speaker, including magnetic circuit of loudspeaker described in any of the above embodiments further include the bracket for being used to support magnetic circuit of loudspeaker,
Voice coil is placed in magnetic gap, the bracket is fixed with centring disk, the centering in magnetic circuit of loudspeaker on the outside of magnetic gap
It is connected to voice coil on the inside of branch piece, is connected with vibrating diaphragm between the bracket and centring disk.
It by using above-mentioned technical proposal, is powered to conductive winding, the magnetic field strength at magnetic gap is larger, reduces not
The exhaustive exploitation of recyclable materials, the voice coil for being placed in magnetic gap shake according to magnetic force change, and then vibrating diaphragm vibration is driven to be sent out
Sound generates magnetic field instead of magnet in the prior art, reduces the use of the exotic materials such as permanent magnet.
Preferably, the voice coil connects power amplifier.
By using above-mentioned technical proposal, power amplification is carried out to voice coil by power amplifier, improves sensitivity.
Preferably, the magnetizer is wrapped with power supply winding, and the power supply winding is connected with rectification circuit, the rectified current
The output end on road is connected to the feeder ear of power amplifier.
By using above-mentioned technical proposal, winding of powering generates electromotive force in magnetizer, provides for power amplifier
Power supply effectively reduces the volume of digital speaker.
In conclusion advantageous effects of the invention are as follows:
1. a pair conductive winding is powered, the magnetic field strength led at magnetic gap is larger, reduces the exhaustive exploitation of non-renewable material；
2. the on-off for controlling control control pipe by pwm control signal keeps magnetic gap to which control flows through the electric current of conductive winding
The magnetic field strength at place；
3. the voice coil for being placed in magnetic gap shakes according to magnetic force change, and then vibrating diaphragm vibration is driven to carry out sounding.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment 1；
Fig. 2 is the relation schematic diagram of conducting magnetic column and magnetizer in embodiment 1；
Fig. 3 is the relation schematic diagram of conducting magnetic column and magnetizer in embodiment 2；
Fig. 4 is the relation schematic diagram of conducting magnetic column and magnetizer in embodiment 3；
Fig. 5 is the structural schematic diagram of embodiment 4.
Appended drawing reference: 1, magnetizer；2, conducting magnetic column；3, magnetic gap；4, conductive winding；5, control pipe；6, bracket；7, voice coil；
8, centring disk；9, vibrating diaphragm；10, dust cover；11, ring；12, power supply winding；13, power amplifier；14, rectification circuit.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment 1: magnetic circuit of loudspeaker, referring to Figures 1 and 2, the magnetizer 1 including the cyclic annular setting that is square, and magnetic conduction
The side of body 1 disconnects, and wherein Fig. 2 is from the side that magnetizer 1 disconnects towards the schematic diagram from opposite side.
The gap protrusion of the side opposite with its gap of magnetizer 1 towards opposite side is formed with cylindrical conducting magnetic column 2,
Conducting magnetic column 2 and magnetizer 1 are integrally formed, and one end of conducting magnetic column 2 is put in the fracture of magnetizer 1, conducting magnetic column 2 and magnetizer
Magnetic gap 3 is formed between 1 gap.
Conducting magnetic column 2 is segmented magnetizer 1, be that magnetizer 1 is divided to by boundary with conducting magnetic column 2 is two sections, magnetizer 1 it is each
Duan Shangjun is wound with conductive winding 4, and each conductive winding 4 is all connected in an ac power supply circuit, and each conductive winding 4 connects
It is connected to a control pipe 5, control pipe 5 is preferably metal-oxide-semiconductor, and the source electrode and drain electrode of control pipe 5 is connected to conductive winding 4 and power circuit
In, it is controlled with the on-off of the power circuit to corresponding conductive winding 4, the grid of control pipe 5 receives pwm control signal to control
Its on-off is made, and the phase of two control received pwm control signals of pipe 5 is different, so that two control 5 alternate conductions of pipe,
The magnetic field strength at magnetic gap 3 is kept, reliability is improved.
The implementation principle of the present embodiment are as follows: it is powered to conductive winding 4, the magnetic field strength at magnetic gap 3 is larger, instead of
Magnet in the prior art generates magnetic field, reduces the use of the exotic materials such as permanent magnet, reduces the excessive of non-renewable material
Exploitation.
Embodiment 2: magnetic circuit of loudspeaker, as shown in figure 3, the magnetizers 1 including two cyclic annular settings that are square, and two
It is connected between magnetizer 1 in right-angled intersection, two magnetizers 1 are in being integrally formed setting, two magnetizers 1 infall wherein
It disconnects, is not in contact with each other between adjacent fracture end, one of magnetizer 1 is similar with Fig. 1 along its axial cross-sectional view.
The gap protrusion of another infall of two magnetizers 1 towards opposite side is formed with conducting magnetic column 2, conducting magnetic column 2 with lead
Magnet 1 is integrally formed setting, magnetic gap 3 is formed between conducting magnetic column 2 and the gap of magnetizer 1, and conducting magnetic column 2 puts in magnetic gap
In 3.
Conducting magnetic column 2 is segmented magnetizer 1, be that boundary divides magnetizer 1 with conducting magnetic column 2 is four sections, magnetizer 1 it is each
Duan Shangjun is wound with conductive winding 4, and each conductive winding 4 is all connected in an ac power supply circuit, and each conductive winding 4 connects
It is connected to a control pipe 5, the source electrode and drain electrode of control pipe 5 is connected in conductive winding 4 and power circuit, to corresponding conductive winding
The on-off of 4 power circuit is controlled, and the grid of control pipe 5 receives pwm control signal to control its on-off, and two controls
The phase of the received pwm control signal of tubulation 5 is different, so that two neighboring 5 alternate conduction of control pipe, opposite two control pipes 5
It simultaneously turns on, keeps the magnetic field strength at magnetic gap 3, improve reliability.
The implementation principle of the present embodiment are as follows: it is powered to conductive winding 4, the magnetic field strength at magnetic gap 3 is larger, instead of
Magnet in the prior art generates magnetic field, reduces the use of the exotic materials such as permanent magnet, reduces the excessive of non-renewable material
Exploitation, and the breakpoint of magnetizer 1 is distributed around conducting magnetic column 2, and the magnetic field strength in magnetic gap 3 is more concentrated, and sensitivity is higher.
Embodiment 3: magnetic circuit of loudspeaker, as shown in figure 4, including the magnetizer 1 of multiple cyclic annular settings that are square, magnetizer 1
Between be in interconnection, and the crosspoint between magnetizer 1 is located at same place (i.e. the midpoint of magnetizer 1), multiple magnetizers 1
It is arranged in being integrally formed, an infall disconnects multiple magnetizers 1 wherein, it is not in contact with each other between adjacent fracture end, wherein
One magnetizer 1 is similar with Fig. 1 along its axial cross-sectional view, and the quantity of magnetizer 1 is provided with 3 in the present embodiment, adjacent to lead
Angle between magnet 1 is 60 degree.
The gap protrusion of another infall of magnetizer 1 towards opposite side is formed with conducting magnetic column 2, conducting magnetic column 2 and magnetizer 1
It is integrally formed setting, magnetic gap 3 is formed between conducting magnetic column 2 and the gap of magnetizer 1, and conducting magnetic column 2 is put in magnetic gap 3.
Conducting magnetic column 2 is segmented magnetizer 1, be that boundary divides magnetizer 1 with conducting magnetic column 2 is four sections, magnetizer 1 it is each
Duan Shangjun is wound with conductive winding 4, and each conductive winding 4 is all connected in an ac power supply circuit, and each conductive winding 4 connects
It is connected to a control pipe 5, the source electrode and drain electrode of control pipe 5 is connected in conductive winding 4 and power circuit, to corresponding conductive winding
The on-off of 4 power circuit is controlled, and the grid of control pipe 5 receives pwm control signal to control its on-off, and two controls
The phase of the received pwm control signal of tubulation 5 is different, so that adjacent three control pipe 5 successively alternate conduction, opposite two are controlled
Pipe 5 simultaneously turns on, and keeps the magnetic field strength at magnetic gap 3, improves reliability.
The implementation principle of the present embodiment are as follows: it is powered to conductive winding 4, the magnetic field strength at magnetic gap 3 is larger, instead of
Magnet in the prior art generates magnetic field, reduces the use of the exotic materials such as permanent magnet, reduces the excessive of non-renewable material
Exploitation, and the breakpoint of magnetizer 1 is distributed around conducting magnetic column 2, and the magnetic field strength in magnetic gap 3 is more concentrated, and sensitivity is higher.
Embodiment 4: digital speaker further includes using as shown in figure 5, including arbitrary magnetic circuit of loudspeaker in embodiment 1-3
In the bracket 6 of support speaker magnetic circuit, voice coil 7 is placed in magnetic gap 3, bracket 6 is in magnetic circuit of loudspeaker close to the outside of magnetic gap 3
It is fixed with centring disk 8, the inside of centring disk 8 is connected to voice coil 7, and vibrating diaphragm 9 is connected between bracket 6 and centring disk 8, shakes
The inner ring of film 9 is connected to centring disk 8, and outer ring is connected to bracket 6 through ring 11, is connected with dust cover at the inner ring of vibrating diaphragm 9
10。
Voice coil 7 connects power amplifier 13.And magnetizer 1 is wrapped with power supply winding 12, and power supply winding 12 is connected with
Rectification circuit 14, rectification circuit 14 are rectifier bridge, and the both ends of power supply winding 12 are connected to two inputs of rectification circuit 14
End, the positive-negative output end of rectification circuit 14 are connected to the power supply positive-negative input end of power amplifier 13, pass through power amplification
Device 13 carries out power amplification to voice coil 8, improves sensitivity, and power supply winding 12 generates electromotive force in magnetizer 1, puts for power
Big device 13 provides power supply, effectively reduces the volume of digital speaker
The implementation principle of the present embodiment are as follows: be powered to conductive winding 4, the magnetic field strength at magnetic gap 3 is larger, and reduction can not
The exhaustive exploitation of regrown material, the voice coil 7 for being placed in magnetic gap 3 shake according to magnetic force change, and then the vibration of vibrating diaphragm 9 is driven to be sent out
Sound generates magnetic field instead of magnet in the prior art, reduces the use of the exotic materials such as permanent magnet.
The embodiment of the above specific embodiment is presently preferred embodiments of the present invention, not limits guarantor of the invention according to this
Range is protected, therefore: the equivalence changes that all structures under this invention, shape, principle are done should all be covered by protection scope of the present invention
Within.
Claims (10)
1. magnetic circuit of loudspeaker, it is characterised in that: including the magnetizer (1) being annularly arranged, the side of the magnetizer (1) is disconnected
It opens, the gap protrusion of the magnetizer (1) side opposite with its gap towards opposite side is formed with conducting magnetic column (2), described
It is formed between conducting magnetic column (2) and the gap of magnetizer (1) magnetic gap (3), the conducting magnetic column (2) divides magnetizer (1)
Section, each Duan Shangjun of the magnetizer (1) are wound with conductive winding (4).
2. magnetic circuit of loudspeaker according to claim 1, it is characterised in that: the conductive winding (4) is connected with control thereon
Current switching control circuit.
3. magnetic circuit of loudspeaker according to claim 2, it is characterised in that: the control circuit includes being connected to conductive winding
(4) the control pipe (5) of current supply circuit, the control pipe (5) receive pwm control signal to control its on-off.
4. magnetic circuit of loudspeaker, it is characterised in that: including two magnetizers being annularly arranged (1), be between two magnetizers (1)
Right-angled intersection connection, an infall disconnects two magnetizers (1) wherein, and another infalls of two magnetizers (1) is towards right
The gap protrusion of side is formed with conducting magnetic column (2), is formed with magnetic gap between the conducting magnetic column (2) and the gap of magnetizer (1)
(3), the conducting magnetic column (2) is segmented magnetizer (1), and each Duan Shangjun of the magnetizer (1) is wound with conductive winding
(4)。
5. magnetic circuit of loudspeaker according to claim 4, it is characterised in that: the conductive winding (4) is connected with control thereon
Current switching control circuit.
6. magnetic circuit of loudspeaker according to claim 5, it is characterised in that: the control circuit includes being connected to conductive winding
(4) the control pipe (5) of current supply circuit, the control pipe (5) receive pwm control signal to control its on-off.
7. magnetic circuit of loudspeaker, it is characterised in that: including several magnetizers (1) being annularly arranged, be between the magnetizer (1)
Interconnection, and the crosspoint between magnetizer (1) is located at same place, an infall disconnects several magnetizers (1) wherein, if
Another infall of dry magnetizer (1) towards opposite side gap protrusion is formed with conducting magnetic column (2), the conducting magnetic column (2) with lead
It is formed between the gap of magnet (1) magnetic gap (3), the conducting magnetic column (2) is segmented magnetizer (1), the magnetizer
(1) each Duan Shangjun is wound with conductive winding (4).
8. digital speaker, it is characterised in that: further include being used for including the described in any item magnetic circuit of loudspeaker of claim 1-7
The bracket (6) of support speaker magnetic circuit, is placed with voice coil (7) in magnetic gap (3), and the bracket (6) is close in magnetic circuit of loudspeaker
It is fixed on the outside of magnetic gap (3) centring disk (8), is connected to voice coil (7) on the inside of the centring disk (8), the bracket (6)
Vibrating diaphragm (9) are connected between centring disk (8).
9. digital speaker according to claim 8, it is characterised in that: the voice coil (7) connects power amplifier
(13)。
10. digital speaker according to claim 9, it is characterised in that: the magnetizer (1) is wrapped with power supply winding
(12), the power supply winding (12) is connected with rectification circuit (14), and the output end of the rectification circuit (14) is connected to power and puts
The feeder ear of big device (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811629052.XA CN109495824B (en) | 2018-12-28 | 2018-12-28 | Loudspeaker magnetic circuit and digital loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811629052.XA CN109495824B (en) | 2018-12-28 | 2018-12-28 | Loudspeaker magnetic circuit and digital loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109495824A true CN109495824A (en) | 2019-03-19 |
| CN109495824B CN109495824B (en) | 2020-10-02 |
Family
ID=65713135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811629052.XA Active CN109495824B (en) | 2018-12-28 | 2018-12-28 | Loudspeaker magnetic circuit and digital loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109495824B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021104067A1 (en) * | 2019-11-25 | 2021-06-03 | 歌尔股份有限公司 | Loudspeaker and electronic device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86210295U (en) * | 1986-12-10 | 1987-12-23 | 黄承昂 | Dc electric loudspeaker |
| CN1443020A (en) * | 2003-03-03 | 2003-09-17 | 胡修恩 | Signal excitation type electric microphone system |
| CN2935688Y (en) * | 2006-07-07 | 2007-08-15 | 常州美欧电子有限公司 | Parallel magnetic structure loudspeaker |
| CN105208485A (en) * | 2015-11-06 | 2015-12-30 | 珠海丽磁音响有限公司 | Excitation earphones |
| JP2017050842A (en) * | 2016-05-17 | 2017-03-09 | ヤマウチ株式会社 | Vibration generator |
-
2018
- 2018-12-28 CN CN201811629052.XA patent/CN109495824B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86210295U (en) * | 1986-12-10 | 1987-12-23 | 黄承昂 | Dc electric loudspeaker |
| CN1443020A (en) * | 2003-03-03 | 2003-09-17 | 胡修恩 | Signal excitation type electric microphone system |
| CN2935688Y (en) * | 2006-07-07 | 2007-08-15 | 常州美欧电子有限公司 | Parallel magnetic structure loudspeaker |
| CN105208485A (en) * | 2015-11-06 | 2015-12-30 | 珠海丽磁音响有限公司 | Excitation earphones |
| JP2017050842A (en) * | 2016-05-17 | 2017-03-09 | ヤマウチ株式会社 | Vibration generator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021104067A1 (en) * | 2019-11-25 | 2021-06-03 | 歌尔股份有限公司 | Loudspeaker and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109495824B (en) | 2020-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3141071A (en) | Full range electroacoustic transducers | |
| WO2020147539A1 (en) | Device that generates sound from both sides, and electronic product | |
| WO2009103247A1 (en) | Inner magnetic transducer with multiple magnectic gaps and multiple coils and preparation method thereof | |
| TW201941621A (en) | Panel audio loudspeaker electromagnetic actuator | |
| US8249291B2 (en) | Extended multiple gap motors for electromagnetic transducers | |
| TW200303030A (en) | Transducer motor/generator assembly | |
| WO2021104066A1 (en) | Loudspeaker and electronic device | |
| WO2018040397A1 (en) | Moving-coil loudspeaker | |
| WO2013013502A1 (en) | Driver for transducer with two magnets, two magnetic gaps and two coils | |
| US8325943B2 (en) | Dual-coil, dual gap electromagnetic transducer with multiple channel amplifiers | |
| US20170272865A1 (en) | Voice coil wire, voice coil manufactured by winding the same, loudspeaker and vibration motor | |
| WO2021104067A1 (en) | Loudspeaker and electronic device | |
| US7676053B2 (en) | Electrodynamic loudspeaker | |
| CN209120479U (en) | More body loudspeakers | |
| CN209017311U (en) | Loudspeaker | |
| CN109495824A (en) | Magnetic circuit of loudspeaker and digital speaker | |
| CN204408438U (en) | Mobile phone demagnetization loudspeaker | |
| CN209201343U (en) | Magnetic circuit of loudspeaker and digital speaker | |
| CN208940230U (en) | Sounding device | |
| CN205754830U (en) | Speaker | |
| CN212324357U (en) | Skeleton voice coil and electroacoustic conversion device | |
| CN208353602U (en) | A kind of novel and multifunctional acoustical generator | |
| CN107454532B (en) | Double-regulation loudspeaker magnetic circuit system | |
| CN207070319U (en) | Loudspeaker monomer and electronic equipment | |
| KR20150060017A (en) | Interactive vibrator |
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 |