CN109286874A - Acoustical generator and earphone - Google Patents
Acoustical generator and earphone Download PDFInfo
- Publication number
- CN109286874A CN109286874A CN201811259285.5A CN201811259285A CN109286874A CN 109286874 A CN109286874 A CN 109286874A CN 201811259285 A CN201811259285 A CN 201811259285A CN 109286874 A CN109286874 A CN 109286874A
- Authority
- CN
- China
- Prior art keywords
- sound
- absorbing member
- airflow channel
- acoustical generator
- vibrating diaphragm
- 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.)
- Pending
Links
- 239000011358 absorbing material Substances 0.000 claims abstract description 12
- 238000004806 packaging method and process Methods 0.000 claims abstract description 7
- 238000001746 injection moulding Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 abstract description 6
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 230000010355 oscillation Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 210000004209 hair Anatomy 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 210000004243 sweat Anatomy 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004113 Sepiolite Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 210000000085 cashmere Anatomy 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052624 sepiolite Inorganic materials 0.000 description 1
- 235000019355 sepiolite Nutrition 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/2838—Enclosures comprising vibrating or resonating arrangements of the bandpass type
- H04R1/2846—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material
- H04R1/2849—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material for loudspeaker transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
Abstract
The present invention discloses a kind of acoustical generator, including shell and phonation unit, and phonation unit includes vibrational system and magnetic circuit system, and vibrational system includes vibrating diaphragm；Space between the front side and shell of vibrating diaphragm forms ante-chamber, space between the back side of vibrating diaphragm and the conductive magnetic yoke of magnetic circuit system forms back cavity, the acoustical generator further includes the sound-absorbing member connecting with the shell, the sound-absorbing member includes the enclosing wall for surrounding filling region, and it is filled in the sound-absorbing material in the filling region, the enclosing wall has opening portion, it is provided with ventilative packaging part on the opening portion, is also provided on the shell and is connected to the ante-chamber with the first airflow channel of sound-absorbing member and is connected to the second airflow channel of the back cavity and sound-absorbing member.The air pressure that ante-chamber and back cavity can be adjusted when acoustical generator diaphragm oscillations of the invention by sound-absorbing member, so increase the compression ratio of ante-chamber Yu rear cavity space, make the amplitude of vibrating diaphragm and being increased for sensitivity, to improve acoustical behavior.
Description
Technical field
The present invention relates to electro-acoustic product technical field, in particular to a kind of acoustical generator and earphone.
Background technique
Acoustical generator is the important acoustical device of portable electronic device, is used to complete between electric signal and voice signal
Conversion, is a kind of energy conversion device.Due to the lightweight of portable equipment to be adapted to, miniaturization, need to be applied in small-sized sound
Learn the acoustical generator of (such as earphone) in product and be usually all designed very small and exquisite, due to inherent space constraints acoustical generator ante-chamber and after
Chamber is smaller.And amplitude and the sensitivity of the cavity limitation vibrating diaphragm of small size, to influence the acoustical behavior of acoustical generator.
In addition, for prevent the impurity such as dust enter, acoustical generator be mounted at the acoustic aperture being connected to ante-chamber dust-proof pore (or
Fine-structure mesh).In this way, preceding cavity space is smaller when diaphragm oscillations, instantaneous air pressure is big, and the setting of dust-proof fine-structure mesh will lead to air-flow stream
It is logical to be obstructed larger, to influence product amplitude and sensitivity, cause to be distorted, shadow further is generated to the acoustical behavior of acoustical generator
It rings.
Summary of the invention
The purpose of the present invention is to provide a kind of acoustical generators, it is intended to solve the amplitude of existing small size operatic tunes limitation vibrating diaphragm
And the problem of sensitivity.
According to an aspect of the invention, there is provided a kind of acoustical generator, including shell and phonation unit, the sounding list
Member includes vibrational system and magnetic circuit system, and the vibrational system includes vibrating diaphragm；Between the front side of the vibrating diaphragm and the shell
Space forms ante-chamber, and the space between the back side of the vibrating diaphragm and the conductive magnetic yoke of the magnetic circuit system forms back cavity, the sounding
Device further includes the sound-absorbing member connecting with the shell, and the sound-absorbing member includes the enclosing wall for surrounding filling region, and is filled out
The sound-absorbing material in the filling region is filled, the enclosing wall has opening portion, ventilative envelope is provided on the opening portion
Piece installing is also provided with the connection ante-chamber and the first airflow channel of sound-absorbing member on the shell and is connected to the back cavity
With the second airflow channel of sound-absorbing member.
Preferably, the sound-absorbing member is set as cyclic annular and arranges along the circumferentially extending of the conductive magnetic yoke.
Preferably, first airflow channel is disposed as the circumferentially extending along the vibrating diaphragm with the second airflow channel and is in
Slot shape, and first airflow channel and the second airflow channel are respectively positioned on the top of the sound-absorbing member.
Preferably, the sound-absorbing member, the first airflow channel and the second airflow channel are respectively arranged with 2, and about institute
State being centrosymmetrically arranged for vibrating diaphragm.
Preferably, the shell includes downside in the open upper casing being arranged and the annular branch for being fixedly connected on the open-mouth
Frame, first airflow channel and the second airflow channel are both formed on the ring support, and the sound-absorbing member is fixedly connected
On the ring support.
Preferably, the ring support includes fixed ring and the male part set on the fixed ring outer peripheral surface, and described first
Airflow channel is opened in the male part, and the upper casing keeps away a groove equipped with corresponding first airflow channel.
Preferably, the enclosing wall of the sound-absorbing member is groove profile part open at one end, and the open end of the groove profile part is equipped with
Ventilative packaging part, the groove profile part by way of bonding, ultrasonic welding or laser sweat soldering secure bond in the annular
The bottom surface of bracket.
Preferably, the top surface of the groove profile part offers groove corresponding with the side wall of the ring support, the ring
The side wall of shape bracket is embedded in the groove.
Preferably, the enclosing wall of the sound-absorbing member is formed by the protrusion that the side wall of the ring support extends out,
The protrusion and ring support integrated injection molding, the bottom wall of the protrusion offer the hole for filling sound-absorbing material.
According to another aspect of the present invention, a kind of earphone is provided.The earphone includes above-mentioned acoustical generator.
Beneficial effects of the present invention are as follows:
Acoustical generator of the present invention is connected to the first airflow channel of ante-chamber and sound-absorbing member, and connection by being arranged on shell
Second airflow channel of back cavity and sound-absorbing member allows and adjusts ante-chamber and back cavity by sound-absorbing member in diaphragm oscillations
Air pressure, in this way, increase the compression ratio of ante-chamber Yu rear cavity space using the sound-absorbing effect of sound-absorbing member, make vibrating diaphragm amplitude and
Sensitivity is increased, to improve acoustical behavior.In other words, compared with existing acoustical generator, guaranteeing the phase same sex
Under the premise of energy, ante-chamber of the invention can be designed smaller with back cavity, when being applied to corresponding product, can further reduce
The volume of the product.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
Fig. 1 shows decomposition texture schematic diagram of the invention.
Fig. 2 shows partial structural diagrams of the invention.
Fig. 3 shows cross-sectional view of the invention.
Fig. 4 shows partial enlarged view of the invention.
Specific embodiment
In order to illustrate more clearly of the present invention, the present invention is done further below with reference to preferred embodiments and drawings
It is bright.Similar component is indicated in attached drawing with identical appended drawing reference.It will be appreciated by those skilled in the art that institute is specific below
The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
As shown in Figs 1-4, according to one embodiment of present invention, a kind of acoustical generator is provided, which includes shell
And phonation unit.Phonation unit includes vibrational system 21 and magnetic circuit system 22, and shell is for carrying vibrational system and magnetic circuit system
System.Vibrational system 21 includes vibrating diaphragm 211；Space between the front side and shell of vibrating diaphragm 211 forms ante-chamber 111, magnetic circuit system 22
Including conductive magnetic yoke 221, back cavity 112 is formed between the conductive magnetic yoke 221 of the back side of vibrating diaphragm 211 and magnetic circuit system 22, shell, in order to make
The sound outflow that acoustical generator issues, is additionally provided with sound outlet hole 11 on shell.
Vibrational system 21 and magnetic circuit system 22 can refer to existing form, specifically, vibrational system 21 further include with
The voice coil 212 that vibrating diaphragm 211 is fixedly connected, as an example, magnetic circuit system 22 includes conductive magnetic yoke 221, magnet steel 222 and magnetic conductive board 223,
The magnetic gap protruded into for voice coil 212 is formed in magnetic circuit system 22, the electric current of the connection variation of voice coil 212 is then by different size of peace
It trains power and vibrates, the vibration of voice coil 212 drives vibrating diaphragm 211 to vibrate, and energy conversion mode is electric energy-mechanical energy-sound energy.
As shown in Figure 1, acoustical generator of the invention further includes sound-absorbing member 3 connected to the housing, which includes enclosing
Enclosing wall at filling region and the sound-absorbing material that is filled in filling region.Enclosing wall has opening portion, on opening portion
It is provided with ventilative packaging part 31.Ventilative packaging part is damping screen cloth, and permissible vibratory flow passes through, and seals to sound-absorbing material
Dress.Sound-absorbing material is at least one of natural zeolite, active carbon, white carbon black, sepiolite cashmere and zeolite powder, sound-absorbing material with
Granulated filler is into filling region；Or sound-absorbing material is arranged in the form of acoustical cotton in filling region.Is offered on shell
One airflow channel 12 and the second airflow channel 13, the first airflow channel 12 is for being connected to ante-chamber 111 and sound-absorbing member 3, the second gas
Circulation road 13 is for being connected to back cavity 112 and attracting component 3.
In the present embodiment, the size and location of the first airflow channel 12 and the second airflow channel 13 can also without limitation,
As long as being able to satisfy the traffic requirement of connection, in other words, as long as the circulation of the first airflow channel 12, the second airflow channel 13
The space size of area and ante-chamber 111, back cavity 112 is adapted.It should be understood that when the first airflow channel 12 or the second
At airflow channel 13 setting one, which refers to the circulation of first airflow channel 12 or the second airflow channel 13 itself
Area.When the first airflow channel 12 or the second airflow channel 13 are respectively arranged with multiple, which respectively refers to multiple
Total circulation area of one airflow channel or the second airflow channel.
Acoustical generator of the invention is logical by using the setting connection ante-chamber 111 on shell and the first air-flow of sound-absorbing member 3
Road 12 and the second airflow channel 13 for being connected to back cavity 112 and sound-absorbing member 3, allow when vibrating diaphragm 211 is vibrated by suction
Sound component 3 adjusts separately the air pressure of ante-chamber 111 and back cavity 112, in this way, increasing ante-chamber using the sound-absorbing effect of sound-absorbing member 3
111 with the compression ratio of back cavity 112.The sound-absorbing material filled in sound-absorbing member 3 is by non-foamed porous material by being granulated work
Skill is made, using the microcosmic cellular structure of non-foamed porous material to gas quick adsorption-desorption property, so that hair
The resonance space of sound device virtually increases, so that it is wide that acoustical generator resonant frequency, extension low-frequency band is effectively reduced.Specifically, preceding
When chamber 111 is compressed, the portion of air in ante-chamber 111 can enter sound-absorbing member 3 via the first airflow channel 12, in back cavity
112 when being compressed, and the portion of air in back cavity 112 can enter sound-absorbing member 3 via the second airflow channel 13, in this way, ante-chamber
111 and back cavity 112 be able to be compressed to a greater degree.And due to hindering to reduce, the amplitude of vibrating diaphragm 211 and obtaining for sensitivity
To increase, to improve acoustical behavior.In other words, compared with existing acoustical generator, under the premise of guaranteeing same performance,
Ante-chamber 111 and back cavity 112 of the invention can be designed smaller, when being applied to corresponding product, can further reduce this
The volume of product.
Since sound-absorbing member 3 is fixedly connected with the casing, in order to see below sound-absorbing member 3 to the occupancy of acoustical generator horizontal space,
Sound-absorbing member 3 is set as cyclic annular and arranges along the circumferentially extending of conductive magnetic yoke 221.
Further, acoustical generator horizontal space is accounted in order to reduce the first airflow channel 12 and the second airflow channel 13
It is in slot shape along the circumferentially extending of vibrating diaphragm 211 with, the first airflow channel 12 and the second airflow channel 13, and first gas
Circulation road 12 and the second airflow channel 13 are respectively positioned on the top of the sound-absorbing member.
Further, for the more balancedly air pressure of adjustment ante-chamber 111 and back cavity 112, balance vibrating diaphragm, the first airflow channel
12, there are two the second airflow channel 13 and sound-absorbing member 3 are respectively provided with, and along the circumferentially-spaced arrangement of vibrating diaphragm 211, the of every side
One airflow channel 12 and the second airflow channel are only connected to the sound-absorbing member 3 of this side.Preferably, two the first airflow channels
12, the second airflow channel 13 and sound-absorbing member 3 being centrosymmetrically arranged about vibrating diaphragm 211.
Further, shell includes upper casing 14 and ring support 15, and the downside of the upper casing 14 is in open setting, annular branch
Frame 15 is set to the open-mouth of 14 downside of upper casing, and the first airflow channel 12 and the second airflow channel 13 are both formed in ring support
On 15, sound-absorbing member 3 is fixedly connected on ring support 15.
In the present embodiment, specifically, ante-chamber 111, vibrating diaphragm 211 and magnetic conduction are formed between the roof and vibrating diaphragm 211 of upper casing 14
Back cavity 112 is formed between yoke 221, ring support 15.It is understood that shell is subdivided into upper casing 14 and ring support 15,
The two is fixedly connected by way of being bonded or welded, and the first airflow channel 12 and the second airflow channel 13 are arranged at annular
On bracket 15, so not only contribute to concentrate the first airflow channel 12 of forming and the second airflow channel 13, but also convenient for vibration
The assembly of system 21 and magnetic circuit system 22.
Further, ring support 15 include fixed ring 151 and the male part 152 set on 151 outer peripheral surface of fixed ring, first
Airflow channel 12 is opened in male part 152, and the second airflow channel 13 is opened in fixed ring 151.Upper casing 14 is equipped with corresponding first gas
Circulation road 12 keeps away a groove.
In the present embodiment, since the effect of the first airflow channel 12 is to be connected to ante-chamber 111 and sound-absorbing member 3, by
The outer peripheral surface setting male part 152 of fixed ring 151 can then be squeezed with opening up the first airflow channel 12 to avoid the first airflow channel 12
Account for the installation space of vibrational system 21 or magnetic circuit system 22.
Further, the wall that encloses of sound-absorbing member 3 is the groove profile part that top surface is open, the ventilative encapsulation of top surface sealing of groove profile part
Part, groove profile part by way of bonding, ultrasonic welding or laser sweat soldering secure bond in the bottom surface of ring support 15.It is preferred that
Ground, the top surface of groove profile part open up fluted 32, in the side wall insertion groove 32 that ring support 15 extends downward, to enhance suction
The bonding strength of sound component 3 and ring support 15.
Optionally, the protrusion 153 that the enclosing wall of sound-absorbing member 3 is extended out by the side wall of ring support 15 is formed, convex
Portion 153 and 15 integrated injection molding of ring support out.The shell structure of such structure is simple, and the mode of integrated injection molding
So that the processing of shell becomes easier to.It is understood that the ventilative packaging part of such structure is moulded in protrusion 153 and ring
Between shape bracket 15, to be separated out the space for filling sound-absorbing material, the bottom wall of protrusion 153 is offered for filling suction
The hole of sound material.
The present invention also proposes a kind of earphone, which includes acoustical generator, and the specific structure of the acoustical generator is referring to above-mentioned implementation
Example, since this earphone uses whole technical solutions of above-mentioned all embodiments, at least with the technology of above-described embodiment
All beneficial effects brought by scheme, this is no longer going to repeat them.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
Claims (10)
1. a kind of acoustical generator, including shell and phonation unit, the phonation unit includes vibrational system and magnetic circuit system, described
Vibrational system includes vibrating diaphragm；Space between the front side of the vibrating diaphragm and the shell forms ante-chamber, the back side of the vibrating diaphragm with
Space between the conductive magnetic yoke of the magnetic circuit system forms back cavity, which is characterized in that the acoustical generator further includes and the shell
The sound-absorbing member of connection, the sound-absorbing member includes the enclosing wall for surrounding filling region, and is filled in the filling region
Sound-absorbing material, the enclosing wall have opening portion, ventilative packaging part is provided on the opening portion, is also opened on the shell
Equipped with being connected to the ante-chamber with the first airflow channel of sound-absorbing member and be connected to the second air-flow of the back cavity and sound-absorbing member
Channel.
2. acoustical generator according to claim 1, which is characterized in that the sound-absorbing member is set as cyclic annular and along the magnetic conduction
The circumferentially extending of yoke is arranged.
3. acoustical generator according to claim 2, which is characterized in that first airflow channel is all provided with the second airflow channel
Be set to the circumferentially extending along the vibrating diaphragm and in slot shape, and described in first airflow channel and the second airflow channel be respectively positioned on
The top of sound-absorbing member.
4. acoustical generator according to claim 3, which is characterized in that the sound-absorbing member, the first airflow channel and the second gas
Circulation road is respectively arranged with 2, and being centrosymmetrically arranged about the vibrating diaphragm.
5. acoustical generator according to claim 1, which is characterized in that the shell include downside in the upper casing of open setting and
It is fixedly connected on the ring support of the open-mouth, first airflow channel and the second airflow channel are both formed in the annular
On bracket, the sound-absorbing member is fixedly connected on the ring support.
6. acoustical generator according to claim 5, which is characterized in that the ring support includes fixed ring and is set to described solid
Determine the male part of ring outer peripheral surface, first airflow channel is opened in the male part, and the upper casing is equipped with corresponding described first
Airflow channel keeps away a groove.
7. acoustical generator according to claim 5, which is characterized in that the enclosing wall of the sound-absorbing member is slot open at one end
Type part, the open end of the groove profile part are equipped with ventilative packaging part, and the groove profile part passes through bonding, ultrasonic welding or laser thermofussion welding
The mode secure bond connect is in the bottom surface of the ring support.
8. acoustical generator according to claim 7, which is characterized in that the top surface of the groove profile part is offered props up with the annular
The side wall of the corresponding groove of the side wall of frame, the ring support is embedded in the groove.
9. acoustical generator according to claim 5, which is characterized in that the enclosing wall of the sound-absorbing member is by the ring support
The protrusion that extends out of side wall formed, the protrusion and ring support integrated injection molding, the bottom wall of the protrusion
Offer the hole for filling sound-absorbing material.
10. a kind of earphone, which is characterized in that the earphone includes such as the described in any item acoustical generators of claim 1-9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811259285.5A CN109286874A (en) | 2018-10-26 | 2018-10-26 | Acoustical generator and earphone |
| PCT/CN2018/120565 WO2020082535A1 (en) | 2018-10-26 | 2018-12-12 | Sound generator and earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811259285.5A CN109286874A (en) | 2018-10-26 | 2018-10-26 | Acoustical generator and earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109286874A true CN109286874A (en) | 2019-01-29 |
Family
ID=65177456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811259285.5A Pending CN109286874A (en) | 2018-10-26 | 2018-10-26 | Acoustical generator and earphone |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109286874A (en) |
| WO (1) | WO2020082535A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140301591A1 (en) * | 2013-04-03 | 2014-10-09 | Cotron Corporation | Earphone |
| CN205726279U (en) * | 2016-04-28 | 2016-11-23 | 青岛歌尔声学科技有限公司 | A kind of headphone |
| CN207382566U (en) * | 2017-10-23 | 2018-05-18 | 上海润欣科技股份有限公司 | Loudspeaker enclosure |
| CN108366313A (en) * | 2018-05-17 | 2018-08-03 | 歌尔股份有限公司 | Acoustical generator and earphone |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3946117B2 (en) * | 2002-10-07 | 2007-07-18 | シチズン電子株式会社 | Sound structure |
| CN101500185A (en) * | 2008-01-30 | 2009-08-05 | 深圳富泰宏精密工业有限公司 | Loudspeaker assembly |
| CN207665191U (en) * | 2017-12-26 | 2018-07-27 | 歌尔科技有限公司 | A kind of loud speaker module |
-
2018
- 2018-10-26 CN CN201811259285.5A patent/CN109286874A/en active Pending
- 2018-12-12 WO PCT/CN2018/120565 patent/WO2020082535A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140301591A1 (en) * | 2013-04-03 | 2014-10-09 | Cotron Corporation | Earphone |
| CN205726279U (en) * | 2016-04-28 | 2016-11-23 | 青岛歌尔声学科技有限公司 | A kind of headphone |
| CN207382566U (en) * | 2017-10-23 | 2018-05-18 | 上海润欣科技股份有限公司 | Loudspeaker enclosure |
| CN108366313A (en) * | 2018-05-17 | 2018-08-03 | 歌尔股份有限公司 | Acoustical generator and earphone |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020082535A1 (en) | 2020-04-30 |
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Application publication date: 20190129 |