CN104066039A - Earplug-type moving coil and moving iron mixed earphone - Google Patents
Earplug-type moving coil and moving iron mixed earphone Download PDFInfo
- Publication number
- CN104066039A CN104066039A CN201410328647.7A CN201410328647A CN104066039A CN 104066039 A CN104066039 A CN 104066039A CN 201410328647 A CN201410328647 A CN 201410328647A CN 104066039 A CN104066039 A CN 104066039A
- Authority
- CN
- China
- Prior art keywords
- moving iron
- sound
- described moving
- unit
- coil
- 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
Landscapes
- Headphones And Earphones (AREA)
Abstract
The invention relates to an earplug-type moving coil and moving iron mixed earphone. The earplug-type moving coil and moving iron mixed earphone is characterized in that a moving iron unit is installed in a moving coil cavity of a moving coil unit, a frequency divider provides signals for the moving coil unit and the moving iron unit, the moving coil unit is in charge of low and medium frequency sound production, the moving iron unit is in charge of high frequency sound production, and therefore the earphone increases the thickness and analysis of medium frequency, singing of people is richer in feeling and vitality, resonance analysis and raising of high frequency are improved, extremely-high frequency sound can be heard, hearing of people is more abundant, an HIFI high-quality music effect is achieved better, and listeners can experience enjoyment like live HIFI high-quality music better.
Description
Technical field
The present invention relates to the moving-coil of ear type and the earphone that moving iron mixes.
Background technology
Earphone is classified from wearing mode, conventionally has the types such as cab over type, supra-aural, In-Ear and wear-type.Wherein, cab over type earphone is called again PlayGear Stealth.At present, PlayGear Stealth is on the market the pronunciation unit drives of one or more moving-coils substantially entirely.
As shown in Figure 1, the PlayGear Stealth 100 of prior art: it has housing 101, moving-coil unit (claiming again transducer) 102.Sound by moving-coil bellmouth orifice 103 in moving-coil unit 102, and realize the signal of telecommunication input of PlayGear Stealth 100 by wire.
From describing prior art earphone, moving-coil unit, the documents such as system of listening to the music, although moving-coil earphone is simple in structure, low frequency is simple and honest, but owing to being subject to the restriction of moving-coil unit itself, make only to adopt the PlayGear Stealth of moving-coil unit, the thickness of intermediate frequency and resolve poorly, the brightness of high frequency is resolved and is risen poorly with prolonging, and can not hear some musical instrument sound of extremely high frequency, be difficult to realize the high-quality music effect of HIFI (English: High-Fidelity, high-fidelity).
Summary of the invention
The object of the invention is the shortcoming of the PlayGear Stealth of avoiding the above-mentioned prior art of mentioning, design improvement PlayGear Stealth, makes the thickness of its intermediate frequency and resolves brightness better, high frequency and resolve and prolong the sound rising better, can hear extremely high frequency, the high-quality music effect that can realize better HIFI.
Realized these objects according to the present invention, the present invention realizes by following technical measures:
The earphone that a kind of moving-coil of ear type and moving iron mix, it includes housing, is provided with moving-coil unit in described housing, is also provided with frequency divider, moving iron unit in described housing, described frequency divider is positioned at the right side of described moving-coil unit, and described moving iron unit is positioned at the left side of described moving-coil unit; In described housing, be provided with the moving-coil cavity for described moving-coil unit sound transmission, and described moving iron unit is arranged in described moving-coil cavity; The left part of described housing is provided with the moving-coil bellmouth orifice sending for described moving-coil unit sound, the moving iron sound sending for described moving iron unit sound sends passage; The input of described frequency divider is by wire input electrical signal, and the first via output of described frequency divider is electrically connected with described moving-coil unit, and the second road output of described frequency divider is electrically connected with described moving iron unit.
Compared with the PlayGear Stealth of prior art, the present invention by arranging moving iron unit in the moving-coil cavity of moving-coil unit, and be respectively moving-coil unit by frequency divider, moving iron unit provides signal, make moving-coil unit be responsible for medium and low frequency pronunciation, high frequency pronunciation is responsible in moving iron unit, thereby make earphone increase thickness and the parsing of intermediate frequency, make people's song more be rich in emotion and vitality, the brightness that has also increased high frequency is resolved and prolongs liter, can hear the sound of extremely high frequency, make people's the sense of hearing can be abundanter, realize better the high-quality music effect of HIFI, the high-quality music belt that more can experience HIFI is to the enjoyment as hearer scene.
Brief description of the drawings
Fig. 1 is the structural representation of the PlayGear Stealth of prior art.
Fig. 2 is the structural representation of the embodiment of the present invention 1 earphone.
Fig. 3 is the schematic perspective view of the embodiment of the present invention 1 earphone.
Fig. 4 is the schematic perspective view at another visual angle of Fig. 3.
Fig. 5 is the contrast schematic diagram of the frequency response curve of the frequency response curve of the embodiment of the present invention 1 earphone and the PlayGear Stealth of prior art.
Fig. 6 is the structural representation of the embodiment of the present invention 2 earphones.
Fig. 7 is the structural representation of the embodiment of the present invention 3 earphones.
Fig. 8 is the structural representation of the embodiment of the present invention 4 earphones.
Fig. 9 is the structural representation of the embodiment of the present invention 5 earphones.
Figure 10 is the structural representation of the embodiment of the present invention 6 earphones.
Figure 11 is the structural representation of the embodiment of the present invention 7 earphones.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Embodiment 1
As shown in Fig. 2～4, the earphone that the moving-coil of ear type of the present invention and moving iron mix, it includes housing 1, is provided with moving-coil unit 2 in housing 1.In housing 1, be also provided with frequency divider 3, moving iron unit 4.In Fig. 2, user in the time wearing earphone, the left side of housing 1 in people's duct, the right side of housing 1 be outwards, the front side of housing 1 towards the rear side of people's front (as eye), housing 1 rear towards people.
Frequency divider 3 is positioned at the right side of moving-coil unit 2, and moving iron unit 4 is positioned at the left side of moving-coil unit 2.In housing 1, be provided with the moving-coil cavity 5 for moving-coil unit 2 sound transmissions, and moving iron unit 4 is arranged in moving-coil cavity 5.The left part of housing 1 is provided with the moving-coil bellmouth orifice 6 sending for moving-coil unit 2 sound, the moving iron sound sending for moving iron unit 4 sound sends passage 7.The input of frequency divider 3, by wire 8 input electrical signals, is realized the input signal of earphone.The first via output of frequency divider 3 is electrically connected with moving-coil unit 2, for example: can connect by wire; The second road output of frequency divider 3 is electrically connected with moving iron unit 4, for example: can connect by wire.
Can also make to wear at the sheathed foam-rubber cushion in the left side of housing 1 more comfortable, but this be optional.If consider the distortion according to Fig. 2, the size and shape of part only depends on the design of earphone, and the use of these titles is only located these parts for being easier in earphone in specification and claim.
Certainly, according to the impact such as actual production, audio, the moving iron unit 4 of earphone can be one or more, and this should belong to protection scope of the present invention.
In the present embodiment, moving-coil bellmouth orifice 6 is towards left side, and moving iron sound sends passage 7 and is raised in housing 1, and moving iron sound sends passage 7 obliquely towards front side, the sound sender who makes moving-coil unit 2 to from the sound sender of moving iron unit 4 to different.Preferably, moving iron unit 4 is provided with sound mouth 9, the sound mouth 9 of moving iron unit 4 is positioned at moving iron sound and sends passage 7, and the sound mouth 9 of moving iron unit 4 towards with moving iron sound send passage 7 towards identical, the sound mouth 9 of moving iron unit 4 towards with moving iron sound send passage 7 towards consistent, for a kind of side of moving iron unit 4 goes out sound mode.This structure, has improved consistency, and therefore under many situations, has improved quality, contributes to better sending of the wearing of user, sound etc.
Operation principle of the present invention is: by frequency divider 3 be respectively moving-coil unit 2, moving iron unit 4 provides signal, makes moving-coil unit 2 be responsible for medium and low frequency pronunciation, high frequency pronunciation is responsible in moving iron unit 4.
As shown in Figure 5, the frequency response curve of the frequency response curve that in figure, A curve is earphone of the present invention, the PlayGear Stealth that B curve is prior art, from left to right, and the frequency 20～500th of transverse axis, low frequency, 501～1.5K are that intermediate frequency, 1.5K are high frequencies afterwards.As seen from Figure 5, the medium-high frequency part of A curve obviously peak value higher, high frequency part also wants wider, and the attenuation ratio of B curve is very fast.Therefore, compared with the PlayGear Stealth of prior art, earphone of the present invention has increased thickness and the parsing of intermediate frequency, make people's song more be rich in emotion and vitality, the brightness that has also increased high frequency is resolved and prolongs liter, can hear the sound of extremely high frequency, makes people's the sense of hearing can be abundanter, realize better the high-quality music effect of HIFI, the high-quality music belt that more can experience HIFI is to the enjoyment as hearer scene.
Embodiment 2
As shown in Figure 6, the difference of the present embodiment and embodiment 1 is, moving iron unit 4 is provided with sound mouth 9, the sound mouth 9 of moving iron unit 4 is positioned at moving iron sound and sends passage 7, and the sound mouth 9 of moving iron unit 4 towards left side, the sound mouth 9 of moving iron unit 4 towards with moving iron sound send passage 7 towards inconsistent, for the another kind of side of moving iron unit 4 goes out sound mode.
Other structure and the operation principle of the present embodiment are identical with embodiment 1, do not repeat them here.
Embodiment 3
As shown in Figure 7, the difference of the present embodiment and embodiment 2 is, moving-coil bellmouth orifice 6 is towards left side, moving iron sound sends passage 7 and is raised in housing 1, moving iron sound sends passage 7 obliquely towards left side, moving iron unit 4 is provided with sound mouth 9, and the sound mouth 9 of moving iron unit 4 is positioned at moving iron sound and sends passage 7, and the sound mouth 9 of moving iron unit 4 towards with moving iron sound send passage 7 towards identical.Moving iron sound send passage 7 towards the sound mouth 9 of, moving iron unit 4 towards unanimously, form one and go out sound mode.
Other structure and the operation principle of the present embodiment are identical with embodiment 1, do not repeat them here.
Embodiment 4
As shown in Figure 8, the difference of the present embodiment and embodiment 1 is, moving-coil bellmouth orifice 6 is towards left side, and moving iron sound sends passage 7 also towards left side; Moving iron unit 4 is provided with sound mouth 9, and sound mouth 9 is arranged at the centre of moving iron unit 4, and the sound mouth 9 of moving iron unit 4 is positioned at moving iron sound and sends passage 7, and the sound mouth of moving iron unit 4 is also towards left side.Be moving-coil bellmouth orifice 6 towards, moving iron sound send passage 7 towards the sound mouth 9 of, moving iron unit 4 towards all consistent, the front that belongs to moving iron unit 4 goes out sound mode.
Other structure and the operation principle of the present embodiment are identical with embodiment 1, do not repeat them here.
Embodiment 5
As shown in Figure 9, the difference of the present embodiment and embodiment 1 is, moving-coil bellmouth orifice 6 is towards left side, and moving iron sound sends passage 7 also towards left side; Moving iron unit 4 is provided with sound mouth 9, and sound mouth 9 is arranged at the centre portion to the front of moving iron unit 4, and the sound mouth 9 of moving iron unit 4 is positioned at moving iron sound and sends passage 7, and the sound mouth of moving iron unit 4 is also towards left side.Be moving-coil bellmouth orifice 6 towards, moving iron sound send passage 7 towards the sound mouth 9 of, moving iron unit 4 towards all consistent, the front that belongs to moving iron unit 4 goes out sound mode.
Other structure and the operation principle of the present embodiment are identical with embodiment 1, do not repeat them here.
Embodiment 6
As shown in figure 10, the difference of the present embodiment and embodiment 1 is, moving-coil bellmouth orifice 6 is towards left side, and moving iron sound sends passage 7 and is raised in housing 1, and moving iron sound sends passage 7 and be arranged at the centre of housing 1, and moving iron sound sends passage 7 towards left side; Moving iron unit 4 is provided with sound mouth 9, and sound mouth 9 is arranged at the centre of moving iron unit 4, and the sound mouth of moving iron unit 4 is positioned at moving iron sound and sends passage 7, and the sound mouth of moving iron unit 4 is also towards left side.Be moving-coil bellmouth orifice 6 towards, moving iron sound send passage 7 towards the sound mouth 9 of, moving iron unit 4 towards all consistent, the front that belongs to moving iron unit 4 goes out sound mode.
Other structure and the operation principle of the present embodiment are identical with embodiment 1, do not repeat them here.
Embodiment 7
As shown in figure 11, the difference of the present embodiment and embodiment 1 is, moving-coil bellmouth orifice 6 is towards left side, and moving iron sound sends passage 7 and is raised in housing 1, moving iron sound sends passage 7 and is arranged at the centre portion to the rear of housing 1, and moving iron sound sends passage 7 towards left side; Moving iron unit 4 is provided with sound mouth 9, and sound mouth 9 is arranged at the centre of moving iron unit 4, and the sound mouth of moving iron unit 4 is positioned at moving iron sound and sends passage 7, and the sound mouth of moving iron unit 4 is also towards left side.Be moving-coil bellmouth orifice 6 towards, moving iron sound send passage 7 towards the sound mouth 9 of, moving iron unit 4 towards all consistent, the front that belongs to moving iron unit 4 goes out sound mode.
Other structure and the operation principle of the present embodiment are identical with embodiment 1, do not repeat them here.
Finally explanation, the present invention is not defined as described and concrete instance that describe, but can modify in a different manner.The frame mode that individual components is especially different from those other Yu Dongtie unit, moving-coil unit of having narrated is possible, especially, and relative size can be chosen as from shown in those are different, the shape of sound channel is only purely schematically illustrated here.
In Fig. 2,6～11, all show frequency divider, but this optional and transducer also can be simply in parallel to be connected in series with other parts.The present invention relates generally to these aspects, and it is only marginally subject to its impact, and concentrates in the geometrical arrangements of the several transducers in PlayGear Stealth.
7 embodiment that the design is all, make them have specific sound outlet hole, in embodiments of the present invention, in order further to improve consistency, can be also alternate manner setting.
All material for earphone in prior art can be used as the material according to PlayGear Stealth of the present invention, and all manufacturing technologies can be used as improving the manufacturing technology of application possibility of the present invention equally.
Claims (9)
1. the earphone that the moving-coil of an ear type and moving iron mix, it includes housing, in described housing, be provided with moving-coil unit, it is characterized in that: in described housing, be also provided with frequency divider, moving iron unit, described frequency divider is positioned at the right side of described moving-coil unit, and described moving iron unit is positioned at the left side of described moving-coil unit; In described housing, be provided with the moving-coil cavity for described moving-coil unit sound transmission, and described moving iron unit is arranged in described moving-coil cavity; The left part of described housing is provided with the moving-coil bellmouth orifice sending for described moving-coil unit sound, the moving iron sound sending for described moving iron unit sound sends passage; The input of described frequency divider is by wire input electrical signal, and the first via output of described frequency divider is electrically connected with described moving-coil unit, and the second road output of described frequency divider is electrically connected with described moving iron unit.
2. the earphone that the moving-coil of ear type according to claim 1 and moving iron mix, is characterized in that: described moving-coil bellmouth orifice is towards left side, and described moving iron sound sends passage and is raised in described housing, and described moving iron sound sends passage obliquely towards front side.
3. the earphone that the moving-coil of ear type according to claim 2 and moving iron mix, it is characterized in that: described moving iron unit is provided with sound mouth, the sound mouth of described moving iron unit is positioned at described moving iron sound and sends passage, and the sound mouth of described moving iron unit towards with described moving iron sound send passage towards identical.
4. the earphone that the moving-coil of ear type according to claim 2 and moving iron mix, it is characterized in that: described moving iron unit is provided with sound mouth, the sound mouth of described moving iron unit is positioned at described moving iron sound and sends passage, and the sound mouth of described moving iron unit towards left side.
5. the earphone that the moving-coil of ear type according to claim 1 and moving iron mix, it is characterized in that: described moving-coil bellmouth orifice is towards left side, described moving iron sound sends passage and is raised in described housing, described moving iron sound sends passage obliquely towards left side, described moving iron unit is provided with sound mouth, the sound mouth of described moving iron unit is positioned at described moving iron sound and sends passage, and the sound mouth of described moving iron unit towards with described moving iron sound send passage towards identical.
6. the earphone that the moving-coil of ear type according to claim 1 and moving iron mix, is characterized in that: described moving-coil bellmouth orifice is towards left side, and described moving iron sound sends passage also towards left side; Described moving iron unit is provided with sound mouth, and described sound mouth is arranged at the centre of described moving iron unit, and the sound mouth of described moving iron unit is positioned at described moving iron sound and sends passage, and the sound mouth of described moving iron unit is also towards left side.
7. the earphone that the moving-coil of ear type according to claim 1 and moving iron mix, is characterized in that: described moving-coil bellmouth orifice is towards left side, and described moving iron sound sends passage also towards left side; Described moving iron unit is provided with sound mouth, and described sound mouth is arranged at the centre portion to the front of described moving iron unit, and the sound mouth of described moving iron unit is positioned at described moving iron sound and sends passage, and the sound mouth of described moving iron unit is also towards left side.
8. the earphone that the moving-coil of ear type according to claim 1 and moving iron mix, it is characterized in that: described moving-coil bellmouth orifice is towards left side, described moving iron sound sends passage and is raised in described housing, described moving iron sound sends channel setting in the centre of described housing, and described moving iron sound sends passage towards left side; Described moving iron unit is provided with sound mouth, and described sound mouth is arranged at the centre of described moving iron unit, and the sound mouth of described moving iron unit is positioned at described moving iron sound and sends passage, and the sound mouth of described moving iron unit is also towards left side.
9. the earphone that the moving-coil of ear type according to claim 1 and moving iron mix, it is characterized in that: described moving-coil bellmouth orifice is towards left side, described moving iron sound sends passage and is raised in described housing, described moving iron sound sends channel setting in the centre of described housing portion to the rear, and described moving iron sound sends passage towards left side; Described moving iron unit is provided with sound mouth, and described sound mouth is arranged at the centre of described moving iron unit, and the sound mouth of described moving iron unit is positioned at described moving iron sound and sends passage, and the sound mouth of described moving iron unit is also towards left side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410328647.7A CN104066039A (en) | 2014-07-10 | 2014-07-10 | Earplug-type moving coil and moving iron mixed earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410328647.7A CN104066039A (en) | 2014-07-10 | 2014-07-10 | Earplug-type moving coil and moving iron mixed earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104066039A true CN104066039A (en) | 2014-09-24 |
Family
ID=51553532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410328647.7A Pending CN104066039A (en) | 2014-07-10 | 2014-07-10 | Earplug-type moving coil and moving iron mixed earphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104066039A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104244150A (en) * | 2014-09-28 | 2014-12-24 | 常州阿木奇声学科技有限公司 | Coil-iron type articulation unit of coaxial in-ear earphone |
| CN104954904A (en) * | 2015-05-21 | 2015-09-30 | 歌尔声学股份有限公司 | Earphone |
| CN104954924A (en) * | 2015-07-02 | 2015-09-30 | 苏州蓝威迩电气科技有限公司 | In-ear earphones adopting hybrid power |
| CN105916085A (en) * | 2016-06-30 | 2016-08-31 | 苏州三色峰电子有限公司 | Hybrid receiver |
| WO2018176660A1 (en) * | 2017-03-28 | 2018-10-04 | 歌尔股份有限公司 | Hybrid loudspeaker monomer and loudspeaker module |
| CN109982189A (en) * | 2019-03-19 | 2019-07-05 | 吉安市立讯射频科技股份有限公司 | A kind of noise reduction bluetooth headset convenient for charging |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201479347U (en) * | 2009-09-14 | 2010-05-19 | 中山奥凯华泰电子有限公司 | Mixing double-unit earphone |
| US20110038503A1 (en) * | 2009-08-12 | 2011-02-17 | Cotron Corporation | Earphone |
| CN103237283A (en) * | 2013-04-09 | 2013-08-07 | 苏州恒听电子有限公司 | Multi-armature-unit headset |
| CN204014049U (en) * | 2014-07-10 | 2014-12-10 | 东莞达电电子有限公司 | The earphone that the moving-coil of ear type and moving iron mix |
-
2014
- 2014-07-10 CN CN201410328647.7A patent/CN104066039A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110038503A1 (en) * | 2009-08-12 | 2011-02-17 | Cotron Corporation | Earphone |
| CN201479347U (en) * | 2009-09-14 | 2010-05-19 | 中山奥凯华泰电子有限公司 | Mixing double-unit earphone |
| CN103237283A (en) * | 2013-04-09 | 2013-08-07 | 苏州恒听电子有限公司 | Multi-armature-unit headset |
| CN204014049U (en) * | 2014-07-10 | 2014-12-10 | 东莞达电电子有限公司 | The earphone that the moving-coil of ear type and moving iron mix |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104244150A (en) * | 2014-09-28 | 2014-12-24 | 常州阿木奇声学科技有限公司 | Coil-iron type articulation unit of coaxial in-ear earphone |
| CN104954904A (en) * | 2015-05-21 | 2015-09-30 | 歌尔声学股份有限公司 | Earphone |
| CN104954924A (en) * | 2015-07-02 | 2015-09-30 | 苏州蓝威迩电气科技有限公司 | In-ear earphones adopting hybrid power |
| CN104954924B (en) * | 2015-07-02 | 2019-04-09 | 苏州蓝威迩电气科技有限公司 | A kind of hybrid power In-Ear Headphones |
| CN105916085A (en) * | 2016-06-30 | 2016-08-31 | 苏州三色峰电子有限公司 | Hybrid receiver |
| CN105916085B (en) * | 2016-06-30 | 2019-05-31 | 苏州三色峰电子有限公司 | A kind of mixing receiver |
| WO2018176660A1 (en) * | 2017-03-28 | 2018-10-04 | 歌尔股份有限公司 | Hybrid loudspeaker monomer and loudspeaker module |
| CN109982189A (en) * | 2019-03-19 | 2019-07-05 | 吉安市立讯射频科技股份有限公司 | A kind of noise reduction bluetooth headset convenient for charging |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104066039A (en) | Earplug-type moving coil and moving iron mixed earphone | |
| CN103974160B (en) | Dual-speaker headphone | |
| US20060133629A1 (en) | In-ear monitor with hybrid diaphragm and armature design | |
| CN106231503B (en) | A kind of audio system and control method for interior subregion control | |
| US10264349B2 (en) | Combined-type phase plug, and compression driver and speaker using same | |
| CN104883635A (en) | Near-head type loudspeaker device and application thereof | |
| CN204810369U (en) | Mobile communication terminal | |
| CN105681948A (en) | System and method for improving voice quality of mobile terminal in receiver mode | |
| CN204377104U (en) | The earphone of In-Ear moving-coil and the mixing of dynamic iron | |
| CN204014049U (en) | The earphone that the moving-coil of ear type and moving iron mix | |
| US9998820B2 (en) | Acoustic resonator for audio headphones | |
| US10405088B2 (en) | Combination phase plug, and compression driver and speaker using same | |
| KR100646041B1 (en) | A Speaker embodying a stereo sound | |
| CN109257676B (en) | Bluetooth headset system based on audio distortion compensation technology | |
| CN206061072U (en) | Earphone | |
| CN210157350U (en) | Multi-loudspeaker earphone | |
| CN205864742U (en) | Dynamic swage group and earphone | |
| KR102015732B1 (en) | Powerless portable speaker | |
| CN2862553Y (en) | Four-driving double reversal stereo earphone | |
| CN203840498U (en) | Close-to-head type loudspeaker apparatus | |
| CN101291547A (en) | In-ear surround stereo phone | |
| CN205491057U (en) | Movable coil piezoelectricity dual drive earphone | |
| KR200290895Y1 (en) | Stereo unit for mobile communitcation terminal | |
| CN206164789U (en) | Earphone | |
| CN206350127U (en) | Earphone with double rear operatic tunes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140924 |
|
| RJ01 | Rejection of invention patent application after publication |