CN102196329A - Earphone - Google Patents
Earphone Download PDFInfo
- Publication number
- CN102196329A CN102196329A CN2011100502466A CN201110050246A CN102196329A CN 102196329 A CN102196329 A CN 102196329A CN 2011100502466 A CN2011100502466 A CN 2011100502466A CN 201110050246 A CN201110050246 A CN 201110050246A CN 102196329 A CN102196329 A CN 102196329A
- Authority
- CN
- China
- Prior art keywords
- space
- actuator unit
- framework
- housing
- communicated
- 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
Images
Landscapes
- Headphones And Earphones (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
An earphone of the invention is provided with the following components: a housing for accommodating a driver unit, and a frame part which is provided with a chamber part that is communicated with a back space of the driver unit in the housing. The frame part is provided with the following spaces: a first space which is communicated with the back space of the driver unit through a separation part, and a second space which is provided with an audio playing part that is communicated with outside. The first space and the second space are communicated through a guide pipe part. The guide pipe part is provided at the separation part and projects into a space which is communicated with the back space of the driver unit. The guide pipe projects into the first space in a direction which is orthogonal with a sound playing direction from the back space of the driver unit, wherein the front end of the guide pipe projects from a position which passes through a communication part between the housing and the first space.
Description
Technical field
The present invention relates to a kind of earphone that uses as stereo set, particularly relate to the structure of the acoustic characteristic that is used to improve duct type earphone.
Background technology
In the past, in the earphone as the stereo set use, as the method for improving acoustic characteristic, particularly as preventing because the method that influences its vibration that the back pressure that produces during the vibration of the vibrating membrane of actuator unit side causes, people are provided with the hole on the part of described earphone case, and then sound-resistance material are set to regulate acoustic characteristic in this hole.Fig. 3 shows the general structure of earphone in the past.
Among Fig. 3, housing 102 forms the bassie shape, and the inside of housing 102 is provided with actuator unit 103, and front (being left surface among Fig. 3) is formed with the peristome 110 that is used for sound playing.Actuator unit 103 has the yoke 104 that is generally flat ware shape, is equipped with discoid pole shoe 106 in the inside of yoke 104 by discoid magnet 105.
Vibrating membrane 107 is relative with the front of pole shoe 106 to be installed, and voice coil loudspeaker voice coil 108 is installed on vibrating membrane 107.In the magnetic gap that voice coil loudspeaker voice coil 108 forms between yoke 104 and pole shoe 106.At the back side of housing 102, be provided with porosely 109,109 housing 102 inner face side are provided with sound-resistance material 111 in the hole.
In addition, as shown in Figure 4, known have that earphone is additional to have bass compensation with pipe 112, to enlarge the low-frequency band limiting frequency.Though the structure of actuator unit 103 is identical with actuator unit 103 in the example shown in Figure 3, but the difference of itself and example shown in Figure 3 is: the bass compensation that will have specific length and a specified diameter is with pipe 112, be communicated with the inner space of the housing 102 that is built-in with actuator unit 103, make it to become one with housing 102.By such setting,, can enlarge the low-frequency band limiting frequency of described vibrating membrane owing to the effect of bass compensation with the space of pipe 112.
But in such structure, the thickness of vibrating membrane, described bass compensation are restricted with shape, the internal capacity of pipe, and the improvement of acoustic characteristic is limited.
Therefore, earphone has as shown in Figure 5 been proposed in the patent documentation 1.In the earphone shown in Figure 5, the structure that has adopted first housing 201 and second housing 202 to be communicated with by interface channel 203.In first housing 201, be provided with and the identical actuator unit 103 of actuator unit among Fig. 3, Fig. 4.And dispose bass compensation with vibrating membrane 204, be divided into front and back two parts in order to inner space with described second housing 202.In the hope of by such structure, be implemented in and improve the low-frequency band characteristic under the situation that does not influence alt territory characteristic.Adopt the earphone of this structure, need in use first housing 201 is inserted earhole.
No. the 2643956th, patent documentation 1 Japanese patent gazette
According to the earphone as shown in Figure 5 described in the patent documentation 1, need be in being used for second housing 202 of bass compensation, the special bass compensation with the inertia mass that is enough to reduce the bass limiting frequency of being provided with is with vibrating membrane 204, and this makes structure complicated more.
In addition, the sound wave that bass compensation need send by the actuator unit 103 that is received from first housing, 201 sides conscientiously with vibrating membrane 204 causes the vibration of self, acquisition is lower than the bass of lowest resonance frequency of the vibrating membrane of actuator unit 103, therefore is necessary correspondingly to increase the quality of bass compensation with vibrating membrane 204.Thus, supporting construction also is necessary to strengthen, and this will cause small product size to become big.
Earphone described in the patent documentation 1 shown in Figure 5 has been considered to adopt the technical thought of passive radiation type loud speaker.In the passive radiation type loud speaker, be equipped with on the loudspeaker enclosure of loudspeaker unit, installing again and have with the vibrating membrane of the roughly the same diameter of vibrating membrane of described loudspeaker unit but do not have the loud speaker of the dummy unit of magnetic circuit or voice coil loudspeaker voice coil.The effect that the vibrating membrane desire of dummy unit realizes is that it bears owing to the back pressure of the vibration vibration of membrane generation of loudspeaker unit is vibrated, and vibrates the radiation of the sound wave that produces by this, improves the sound pressure level of low range.In the passive radiation type loud speaker, the sound wave that comes from dummy unit is radiated the outside with the sound wave from loudspeaker unit, and the ear that this sound wave reaches the user just tells on afterwards.But in earphone,, do not enter user's ear yet, can't realize effect like the passive radiation type loud speaker from the sound wave of pseudo-vibrating membrane even pseudo-vibrating membrane shown in Figure 5 is set.
The objective of the invention is to, solve the technical task that exists in the above-mentioned earphone in the past, that is, even providing a kind of need not labyrinth, have the earphone that also can obtain the structure of good result in the bass frequencies characteristic.
Summary of the invention
The main technical schemes of earphone of the present invention is as follows: have the housing that holds actuator unit, and a framework, this framework have with described housing in the cavity portion of dorsal part spatial communication of actuator unit; The cavity portion of described framework is separated into first space that is communicated with described actuator unit dorsal part space and has second space that is communicated with outside hole by separating part; Described first space of described framework and described second space are communicated with via the conduit of being located at described separating part; Described conduit is towards described first space, and towards giving prominence to the rectangular direction of sound playing direction from described actuator unit dorsal part space, its front end protrudes in the position of the interconnecting part that crosses described housing and described first space; From the back pressure in described actuator unit dorsal part space, pass through described conduit from described first space of described framework and arrive second space, be discharged into the outside by hole from described second space with described external communications.
According to earphone of the present invention, be provided with framework with cavity portion, actuator unit dorsal part spatial communication in described cavity portion and the housing that accommodates actuator unit, the cavity portion of this framework is separated first space and second space with the hole that is communicated with the outside that partly is divided into actuator unit dorsal part spatial communication, described first space is communicated with by the conduit that is arranged on the described spacer portion with second space, therefore, from the sound wave of actuator unit rear side, outside with circuitous state through arriving in the conduit from the sound playing direction.
Thus, the space that the back pressure that produces by the rear side at the actuator unit vibrating membrane arrives in the framework makes back pressure reduce, and the vibration vibration of membrane becomes easily, and bass compensation becomes possibility.In addition, the sound wave that the rear side of described vibrating membrane produces is by arriving in the framework in the process external, owing to the existence of conduit is subjected to the acoustics resistance, can obtain the acoustic characteristic corresponding to the sound equipment resistance.
So, can realize following effect: need not to use special inertia mass parts can improve the response of low range, phenomenons such as sound is stuffy can not occur, can obtain the low very full tonequality of range, and, can more easily adjust acoustic characteristic by the design specification that changes conduit.
Description of drawings
Fig. 1 shows the stereoscopic figure of the embodiment of earphone of the present invention.
Fig. 2 is along the profile of (2) among Fig. 1-(2) line.
Fig. 3 represents the sectional arrangement drawing of earphone example in the past.
Fig. 4 represents the sectional arrangement drawing of an other example of earphone in the past.
Fig. 5 represents the sectional arrangement drawing of an example again of earphone in the past.
Symbol description
1 earphone
2 housings
20 actuator unit dorsal part spaces
4 frameworks
4A, 4B profile portion
4C first space
4D second space
The hole of 4D1 and external communications
8 actuator units
9 partition members
9A and actuator unit dorsal part spatial communication opening
The 9B conduit
The 9B1 hole
Embodiment
Below, the embodiment to earphone of the present invention describes with reference to accompanying drawing.
In the earphone 1 of Fig. 1, partly have the playback pipe 3 and the earplug 5 of housing 2, framework 4, connection housing 2 as main composition.Among Fig. 1, the lead division of symbol 6 expression lead-in wires 7.
As shown in Figure 2, housing 2 is that the relative edge by surrounding wall portion 2A, the 2B that will form with double parallel embeds the bassie shape parts that form the inner space mutually, has taken in actuator unit 8 in the inner space.
As shown in Figure 2, framework 4 is by a part being stretched in the embedded hole 2B1, the parts that form as one with the shape of being born and housing 2 by housing 2, described embedded hole 2B1 is formed on one of the perisporium of the rear side that constitutes housing 2 2B, framework 4 inside have with housing 2 in the cavity of actuator unit dorsal part spatial communication.About the structure of this framework 4, will be elaborated after a while as feature of the present invention.
The base portion of lead-in wire lead division 6 is attached on the framework 4.Lead-in wire lead division 6 is bar-shaped outstanding setting from the lower, outer perimeter of framework 4 towards the intertragic incisure side direction, so that earphone 1 embeds the intertragic incisure of user's external ear in use.
The inside of lead-in wire lead division 6 is to be used for interting the lead-in wire 7 cavity portions that establish, and is connected with the stereo set of outside by interting to the lead-in wire 7 of cavity portion, makes voice signal input to actuator unit 8.
On the structure of aforesaid earphone 1, adding has the structure with feature of the present invention as described below.
The invention is characterized in the structure of framework 4.Specifically constitute: the volume in the space of the actuator unit dorsal part spatial communication of expansion and housing 2, suppress the influence of the back pressure in actuator unit dorsal part space; The space of separation and actuator unit dorsal part spatial communication is communicated with by conduit between the space of separating.
Among Fig. 2, framework 4 constitutes by profile portion 4A, the 4B of double parallel structure with by these profile portion 4A, 4B clamping and the partition member 9 that becomes one.Partition member 9 has after a while with the conduit 9B that describes in detail.
Framework 4 inside have cavity portion, this cavity portion by partition member 9 be divided into the space 4C that is communicated with described actuator unit dorsal part space 20 and can with the space 4D of external communications.Below, space 4C is called first space, and space 4D is called second space.
Conduit 9B described later, integrally formed with the partition member 9 of the parts of the profile portion 4A that is different from framework 4,4B, its first space 4C that is communicated with the actuator unit dorsal part space 20 of housing 2 and can and the second space 4D of external communications between.Partition member 9 is integrally formed with the perisporium 2B of the rear side of housing 2. Profile portion 4A, 4B are partially submerged into the state of described embedded hole 2B1 of described perisporium 2B with one chimeric with it.
The first space 4C of framework 4 is communicated with the actuator unit dorsal part space 20 of housing 2 sides by the opening 9A that is formed at partition member 9.
Though the space 4C of framework 4 and 4D are separated parts 9 and separate as mentioned above, be communicated with by the conduit 9B that is arranged on the partition member 9.
The projected direction of conduit 9B, for with the vertical direction of sound playing direction (being vertical among Fig. 2) from the actuator unit dorsal part space 20 of housing 2, the front end of its projected direction, project to the position of crossing opening 9A, wherein, described opening 9A conduct is formed on the partition member 9 with the interconnecting part in the actuator unit dorsal part space 20 of housing 2.
For conduit 9 is made hollow part, its inside is formed with the hole 9B1 along projected direction.The cross section shape of hole 9B1 can be selected circle, rectangle etc.Though in illustrated embodiment, be have same inner diameter cylindric, also can make horn-like along the section shape of the projected direction of conduit 9.
The section shape of these holes 9A1 can be selected according to the acoustic characteristic of setting.In addition, the size of hole 9A1, overhang, to distance of projected direction front end etc. can suitably be set according to desired acoustic characteristic.
On the other hand, in the space in the framework 4, can with the second space 4D of external communications in, be provided with at least one hole 4D1 abreast with the perforation direction that is formed at the hole 9B1 on the conduit 9B.The pressure that the driving of hole 4D1 by actuator unit 8 will produce in the rear side of this vibrating membrane is that back pressure is discharged into the outside, plays and avoids causing the repressed effect of vibration vibration of membrane because of back pressure.
Conduit 9B reaches in the first space 4C in the framework 4.The second space 4D that is communicated with the first space 4C by conduit 9B for the space of external communications, be to enlarge the space that volume is used.
In the present embodiment, have as with the second space 4D of the hole 4D1 of the interconnecting part of outside shape as the volume expansion section, be and bloat shape laterally, on the other hand, the first space 4C that is communicated with actuator unit dorsal part space 20 is for using the renewable zone of low-frequency band of conduit 9B.When using earphone, the profile portion 4A that constitutes described space 4C is with the front, is user's facial parallel face that this face forms the shape near tabular surface that outer surface does not bloat.The front of this profile portion 4A appearance design face that can be used as uses, even by the appended drawings picture or impose engraving mark trade mark etc. and obtain advertising effect.
Present embodiment passes through said structure, position in the actuator unit dorsal part space 20 that is communicated in housing 2 is provided with framework 4, this framework 4 has the space that can enlarge volume, and then, the inside of framework 4 be separated parts 9 be divided into the first space 4C that is communicated in actuator unit dorsal part space 20 and can with the second space 4D of external communications, each space 4C is communicated with by conduit 9B between the 4D simultaneously.
Each space 4C, among the 4D, conduit 9B is arranged on the space 4C that is communicated with actuator unit dorsal part space 20, towards outstanding with the rectangular direction of direction of advance from the back pressure in actuator unit dorsal part space 20.Thus, arrive the outer peripheral face of conduit 9B from the back pressure in actuator unit dorsal part space 20, and in the hole 9B1 through conduit 9B, arrive in the 4D of space, and then, outside by conduct with the hole 4D1 arrival of the interconnecting part of outside.
Like this, because the existence of conduit 9B, the back pressure that generates in actuator unit dorsal part space 20 is transmitting circuitous moving ahead in the passage.Among Fig. 2, shown in dotted arrow,, give and transmit the effect that passage brings labyrinth (labyrinth passage), can impose the acoustics resistance back pressure because conduit 9B is arranged in the transmission passage of back pressure.
Thus, need not in framework 4, to adopt the structure of the transmission of the special inertia mass parts or the back pressure of damming, can discharge back pressure, can improve the acoustic characteristic of low range by the volume that enlarges framework 4 sides.On this basis, make it have suitable acoustics drag characteristic,, can realize plentiful low-frequency band regeneration whereby simultaneously by discharging acoustic pressure to the outside by conduit 9B.
In addition, also can on the hole 4D1 that is arranged at outside interconnecting part, attach sound-resistance material in its inner face, with the further acoustic characteristic of improving.
The industrial possibility of utilizing
The present invention is not limited to the structure among the embodiment described above, only otherwise exceed the scope of the technological thought that claims put down in writing, can suitably carry out design alteration. For example, technological thought of the present invention is also applicable to audiphone, headset etc.
Claims (7)
1. an earphone is characterized in that,
Have:
Housing is used to hold actuator unit,
Framework, its have with described housing in the cavity portion of dorsal part spatial communication of actuator unit;
Wherein, the cavity portion of described framework is separated into first space that is communicated with described actuator unit dorsal part space and has second space that is communicated with outside hole by separating part,
Described first space of described framework and described second space are communicated with via the conduit of being located at described separating part,
Described conduit is towards described first space, and towards giving prominence to the rectangular direction of sound playing direction from described actuator unit dorsal part space, its front end protrudes in the position of the interconnecting part that crosses described housing and described first space,
From the back pressure in described actuator unit dorsal part space, pass through described conduit from described first space of described framework and arrive second space, be discharged into the outside by hole from described second space with described external communications.
2. earphone according to claim 1, wherein, described second space is the volume expansion section.
3. want 1 described earphone according to right, it is characterized in that, described conduit is cylindric.
4. earphone according to claim 1 is characterized in that, the separating part of described conduit and framework and the back part of housing are integrally formed.
5. earphone according to claim 1, wherein, framework is by 2 profile portion of double parallel structure and make these profile portion be positioned at both sides and the separating part that embeds each profile portion constitutes.
6. earphone according to claim 5, during use, the lateral surface of one of described 2 profile portion is the front, this front can be used as appearance design face.
7. earphone according to claim 5, another of described 2 profile portion forms the shape of heaving laterally, and has the hole that is communicated with the outside.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010044605A JP4662508B1 (en) | 2010-03-01 | 2010-03-01 | earphone |
| JP2010-044605 | 2010-03-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102196329A true CN102196329A (en) | 2011-09-21 |
| CN102196329B CN102196329B (en) | 2015-02-11 |
Family
ID=43952827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110050246.6A Expired - Fee Related CN102196329B (en) | 2010-03-01 | 2011-02-28 | Earphone |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4662508B1 (en) |
| CN (1) | CN102196329B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103002385A (en) * | 2012-09-14 | 2013-03-27 | 精拓丽音科技（北京）有限公司 | Miniature loudspeaker module structure with adaptive pressure balancing function |
| CN103475968A (en) * | 2013-08-26 | 2013-12-25 | 歌尔声学股份有限公司 | Earphone |
| CN107079215A (en) * | 2014-10-24 | 2017-08-18 | 索尼公司 | Earphone |
| CN107613418A (en) * | 2016-07-11 | 2018-01-19 | Jvc 建伍株式会社 | Earphone |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013106130A (en) * | 2011-11-11 | 2013-05-30 | Yan-Ru Peng | Open guide type headphone |
| US9319767B2 (en) | 2012-01-30 | 2016-04-19 | Panasonic Intellectual Property Management Co., Ltd. | Earphone |
| KR101310879B1 (en) | 2012-06-19 | 2013-09-25 | 김흥배 | Earphone |
| US8976994B2 (en) | 2012-06-20 | 2015-03-10 | Apple Inc. | Earphone having an acoustic tuning mechanism |
| US9712905B2 (en) | 2012-06-20 | 2017-07-18 | Apple Inc. | Headsets with non-occluding earbuds |
| US8971561B2 (en) | 2012-06-20 | 2015-03-03 | Apple Inc. | Earphone having a controlled acoustic leak port |
| US9258663B2 (en) | 2012-09-07 | 2016-02-09 | Apple Inc. | Systems and methods for assembling non-occluding earbuds |
| CN104284267B (en) * | 2014-09-05 | 2018-06-01 | 歌尔股份有限公司 | A kind of receiver |
| CN104244130B (en) * | 2014-09-05 | 2018-05-22 | 歌尔股份有限公司 | A kind of earphone |
| JP6380504B2 (en) * | 2016-10-28 | 2018-08-29 | オンキヨー株式会社 | headphone |
| CN109391866B (en) * | 2017-08-08 | 2021-07-30 | Jvc 建伍株式会社 | Ventilation path forming structure in earphone and earphone |
| TWI702852B (en) * | 2018-07-03 | 2020-08-21 | 孫珮鈴 | Earphone for stabilizing sound pressure and regulating acoustic leakage |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62141293U (en) * | 1986-02-28 | 1987-09-05 | ||
| CN101606395A (en) * | 2007-02-06 | 2009-12-16 | 星精密株式会社 | Insertion type earphone |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3544433C2 (en) * | 1985-12-16 | 1995-12-14 | Hilti Ag | Rock drill |
| JPS62193392A (en) * | 1986-02-14 | 1987-08-25 | ティアールダブリュー インコーポレーテッド | Method and apparatus for synchronizing digital processing timing signal with video signal |
| JPS6395388A (en) * | 1986-10-13 | 1988-04-26 | 株式会社日立製作所 | Nuclear reactor container |
| JPH03130700A (en) * | 1989-10-16 | 1991-06-04 | Toshiba Corp | Door apparatus for building of atomic power plant |
| JPH08172691A (en) * | 1994-12-16 | 1996-07-02 | Aiwa Co Ltd | Inner ear type headphone |
| JP4294754B2 (en) * | 1998-04-21 | 2009-07-15 | ボーズ・コーポレーション | Active noise reduction headset |
-
2010
- 2010-03-01 JP JP2010044605A patent/JP4662508B1/en not_active Expired - Fee Related
-
2011
- 2011-02-28 CN CN201110050246.6A patent/CN102196329B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62141293U (en) * | 1986-02-28 | 1987-09-05 | ||
| CN101606395A (en) * | 2007-02-06 | 2009-12-16 | 星精密株式会社 | Insertion type earphone |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103002385A (en) * | 2012-09-14 | 2013-03-27 | 精拓丽音科技（北京）有限公司 | Miniature loudspeaker module structure with adaptive pressure balancing function |
| CN103475968A (en) * | 2013-08-26 | 2013-12-25 | 歌尔声学股份有限公司 | Earphone |
| WO2015027900A1 (en) * | 2013-08-26 | 2015-03-05 | 歌尔声学股份有限公司 | Earphone |
| CN103475968B (en) * | 2013-08-26 | 2016-12-28 | 歌尔股份有限公司 | A kind of earphone |
| US9654865B2 (en) | 2013-08-26 | 2017-05-16 | Goertek, Inc. | Earphone |
| CN107079215A (en) * | 2014-10-24 | 2017-08-18 | 索尼公司 | Earphone |
| CN107079215B (en) * | 2014-10-24 | 2019-07-16 | 索尼公司 | Earphone |
| CN107613418A (en) * | 2016-07-11 | 2018-01-19 | Jvc 建伍株式会社 | Earphone |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4662508B1 (en) | 2011-03-30 |
| JP2011182201A (en) | 2011-09-15 |
| CN102196329B (en) | 2015-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102196329B (en) | Earphone | |
| CN102196330B (en) | Earphone | |
| CN210405624U (en) | Earphone with air pressure balancing device | |
| US9237394B2 (en) | Canal type earphone with pressure equilibrium means | |
| JP6136016B2 (en) | earphone | |
| JP5879563B2 (en) | Speaker, hearing aid, earphone, and portable terminal device | |
| USRE48214E1 (en) | Custom fit in-ear monitors utilizing a single piece driver module | |
| KR101674296B1 (en) | Piezoelectric ceramic dual-band bass-enhanced earpiece | |
| CN107079215A (en) | Earphone | |
| CN105612760A (en) | Bone Conduction Speaker | |
| CN102474686B (en) | Loud speaker, hearing aids, inner ear type earphone, portable information processor and AV equipment | |
| CN103167387A (en) | Microspeaker with inner resonance chamber | |
| EP1851993A1 (en) | Audio transducer component | |
| KR101767467B1 (en) | Noise shielding earset and method for manufacturing the earset | |
| CN109862486B (en) | Loudspeaker assembly | |
| WO2015062460A1 (en) | Modular loudspeaker for point sound source and manufacturing method therefor | |
| JP2019145962A (en) | earphone | |
| TW202241143A (en) | Acoustic device | |
| KR20170080388A (en) | Noise shielding earset with acoustic filter | |
| WO2023185412A1 (en) | Sound production module and electronic device | |
| TWI724271B (en) | Wearable speaker system | |
| KR101539064B1 (en) | Earphone having multi-echo spaces | |
| JP3192587U (en) | Multi-voice coil coaxial sound source speaker | |
| US10419845B2 (en) | Headphones and speaker unit | |
| CN217216874U (en) | Speaker device and electronic apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20170228 |