CN106454591A - Earphone - Google Patents
Earphone Download PDFInfo
- Publication number
- CN106454591A CN106454591A CN201610911299.5A CN201610911299A CN106454591A CN 106454591 A CN106454591 A CN 106454591A CN 201610911299 A CN201610911299 A CN 201610911299A CN 106454591 A CN106454591 A CN 106454591A
- Authority
- CN
- China
- Prior art keywords
- earphone
- cavity
- knot
- housing
- single body
- 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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1058—Manufacture or assembly
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
- H04R2201/105—Manufacture of mono- or stereophonic headphone components
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Headphones And Earphones (AREA)
Abstract
The invention provides an earphone, which comprises a shell, an earphone line, a speaker single body and a line knot fixing member, wherein the speaker single body is accommodated in the shell and connected with the earphone line, and the line knot fixing member is arranged in the shell. The earphone is characterized in that the side, which is away from the speaker single body, of the line knot fixing member is provided with a first gap; a first cavity is formed between the line knot fixing member and the speaker single body, and a second cavity is formed between the first gap and the shell; the line knot fixing member is provided with a low-pitch pipe and a connecting channel which connects the first cavity and the second cavity; and the low-pitch pipe is connected with the first cavity and isolated from the second cavity. By using the earphone provided by the invention, the intermediate frequency of the earphone can be adjusted by using the double rear acoustic cavities, and the acoustic performance of the earphone is improved correspondingly.
Description
Technical field
The present invention relates to technical field of acoustics, more specifically, is related to a kind of earphone with double rear operatic tunes.
Background technology
With the extensive application of the portable type electronic products such as high-quality smart mobile phone, Pad, people are to can be with its fit applications
Earphone requirement also more and more higher, while requiring that its bodily form is compact, also requiring which possesses true to nature can reproduce various sounds
The high-fidelity tonequality performance of effect.Additionally, no matter which kind of electronic product above-mentioned, in order to allow user under the situation for not disturbing other people
The acoustical signal provided by electronic product is listened to, earphone has become as the necessary accessory of each electronic product, earphone is also provided in addition
Listener's preferably transfer voice, enables the listener clearly hear and understand sound-content.
At present, the operatic tunes after earphone is usually provided with, the earphone for being partly provided with double rear operatic tunes is typically after two
There is the big or middle bass effect of middle bass area amplitude not by the series connection conducting such as hole or pipe in the operatic tunes.
Content of the invention
In view of the above problems, it is an object of the invention to provide a kind of earphone, with solve current earphone double after the operatic tunes pass through
, there is the big or middle bass effect of middle bass area amplitude not in hole or pipe series connection.
A kind of earphone is provided according to the present invention, including housing, earphone cord, the loudspeaker for being housed in housing and turning on earphone cord
Monomer, and the knot fixture being arranged in housing, are provided with first in knot fixture away from the side of horn single body
Breach；The first cavity is formed between knot fixture and horn single body, forms the second cavity between the first breach and housing；Online
The interface channel of bass pipeline and the first cavity of connection and the second cavity is provided with knot fixture；Bass pipeline and the first chamber
Body connects, and isolates with the second cavity.
Furthermore it is preferred that structure be to be provided with back cavity sound regulating hole on housing, back cavity sound regulating hole and interface channel conducting.
Furthermore it is preferred that structure be that bass pipeline and interface channel are located at the both sides up and down of knot fixture；And in earphone
Same cross section on, bass pipeline and interface channel are located at knot fixture diametrically.
Furthermore it is preferred that structure be that the middle part of knot fixture is provided with fair line passage；The knot of earphone cord is fixed on
Between horn single body and knot fixture, earphone cord by fair line passage along go out.
Furthermore it is preferred that structure be, on the same cross section of earphone, fair line passage, interface channel and bass pipeline position
In knot fixture same diametrically.
Furthermore it is preferred that structure be also to include to be arranged on the earphone handle of housing side；Wherein, it is provided with earphone handle
Drawing lines corresponding with fair line passage, the earphone cord through fair line passage is drawn by drawing lines.
Furthermore it is preferred that structure be, the first breach be.
Furthermore it is preferred that structure be to be provided with the second breach of arcuate structure near the side of housing in knot fixture,
Second breach cooperatively forms interface channel with housing.
Furthermore it is preferred that structure be, housing include the back cover of pyramidal structure and with the back cover fore shell that is connected of adaptation；Front
Acoustic aperture is provided with out on shell, and horn single body is formed and the front operatic tunes for going out acoustic aperture conducting away from the side of knot fixture.
Furthermore it is preferred that structure be, in knot fixture, the side of horn single body is provided with accepting groove, earphone cord
Knot is spacing in accepting groove.
Using the above-mentioned earphone according to the present invention, knot fixture forms the first cavity, knot with the rear end of horn single body
The breach of fixture forms the second cavity with housing, and the first cavity and the second cavity are turned on by interface channel；Also, bassoon
Road is connected with the first cavity, and is isolated with the second cavity, can pass through the first cavity and the second cavity coordinates in regulation earphone
Frequently, the tonequality of earphone is improved.
In order to realize above-mentioned and related purpose, one or more aspects of the present invention include the spy that will be explained in below
Levy.Description below and accompanying drawing are described in detail some illustrative aspects of the present invention.However, only indicating in terms of these
Being can be using some mode in the various modes of the principle of the present invention.Additionally, it is contemplated that including all these aspects with
And their equivalent.
Description of the drawings
By reference to the explanation below in conjunction with accompanying drawing, and with being more fully understood to the present invention, the present invention other
Purpose and result will be more apparent and should be readily appreciated that.In the accompanying drawings：
Fig. 1 is the earphone part sectioned view according to the embodiment of the present invention；
Fig. 2 is to apply the profile in 1 along A-A part.
Reference therein includes：Fore shell 1, back cover 2, horn single body 3, knot fixture 4, the first cavity 5, the second chamber
Body 6, interface channel 7, back cavity sound regulating hole 8, fair line passage 9, bass pipeline 10, earphone handle 11.
Identical label indicates similar or corresponding feature or function in all of the figs.
Specific embodiment
In the following description, for purposes of illustration, in order to provide the comprehensive understanding to one or more embodiments, explain
Many details are stated.It may be evident, however, that these embodiments can also be realized in the case of not having these details.
In other examples, for the ease of describing one or more embodiments, known structure and equipment are illustrated in block form an.
For describing the Headphone structure of the embodiment of the present invention in detail, below with reference to accompanying drawing, the specific embodiment of the present invention is entered
Row is described in detail.
Fig. 1 shows earphone part section structure according to embodiments of the present invention；Fig. 2 is shown along A-A part in Fig. 1
Cross-section structure.
As Fig. 1 and Fig. 2 jointly shown in, the earphone of the embodiment of the present invention, including housing, earphone cord, be housed in housing simultaneously
The horn single body 3 for turning on earphone cord, and the knot fixture 4 being arranged in housing, in knot fixture 4 away from loudspeaker list
The side of body 3 is provided with the first breach, forms the first cavity 5, the first breach and shell between knot fixture 4 and horn single body 3
The second cavity 6 is formed between body；Bass pipeline 10 and the first cavity 5 of connection and the second chamber is provided with knot fixture 4
The interface channel 7 of body；Bass pipeline 10 is connected with the first cavity 5, and is isolated with the second cavity 6, i.e. bass pipeline 10 and first
Cavity 5 connects, and is connected with the second cavity 6 by the first cavity 5 indirectly.
Wherein, the first cavity 5 and the second cavity 6 are the rear operatic tunes of earphone, are provided with back cavity sound regulating hole 8 on housing,
Back cavity sound regulating hole 8 is turned on interface channel 7；One end of first cavity 5 is while connect with bass pipeline 10 and back cavity sound regulating hole 8
Connect, turned on the second cavity 6 by back cavity sound regulating hole 8, and the second cavity 6 is connected with back cavity sound regulating hole 8, by back cavity sound regulating hole
8 are turned on the first cavity 5, are not directly connected to bass pipeline 10.
Specifically, bass pipeline 10 and interface channel 7 are located at the both sides up and down of knot fixture 4, and in the same of earphone
On cross section, bass pipeline 10 and interface channel 7 are located at one of knot fixture 4 diametrically.As shown in Fig. 2 in earphone warp
Later in the cross section of intonation sound hole 8, interface channel 7 is arranged on the surface of knot fixture 4, and bass pipeline 10 is arranged online
The underface of knot fixture 4, under common cooperation of the knot fixture 4 with housing, forms interface channel 7 and bass pipeline 10,
The side of the first cavity 5 is turned on bass pipeline 10, and opposite side is turned on interface channel 7, by interface channel 7 and the second cavity
6 connections.
In a specific embodiment of the present invention, the middle part of knot fixture 4 is provided with fair line passage 9；Earphone
The knot of line is fixed between horn single body 3 and knot fixture 4, and earphone cord passes through fair line passage 9 along going out, in the same of earphone
On cross section, fair line passage 9, interface channel 7 and bass pipeline 10 are located at the same of knot fixture 4 diametrically.Due to ear
One end of machine line is connected conducting with horn single body 3, and the other end is drawn from housing and is electrically connected with external device terminal, so fair line is logical
Road 9 has reached, in the tilted setting of knot fixture 4, the purpose for drawing earphone cord from housing.
The earphone of the embodiment of the present invention, also includes to be arranged on the earphone handle 11 of housing side；Wherein, set in earphone handle 11
Drawing lines corresponding with fair line passage 9 is equipped with, the earphone cord through fair line passage 9 is drawn by drawing lines, and bass pipeline 10 is also extended to
In earphone handle 11, and it is connected with drawing lines.Knot fixture 4 the side and housing away from horn single body 3 or the first cavity 5 it
Between be directly contact, after bass pipeline 10 extends to earphone handle 11, do not turn on the second cavity 6, the side of the second cavity 6
Turn on interface channel 7, the opposite side of the second cavity 6 is enclosed construction, and the second cavity 6 can be avoided direct with bass pipeline 10
Conducting, so as to adjust the intermediate frequency of earphone using the first cavity 5 and the second cavity 6.
It should be noted that in the earphone of the present invention, the volume of the second cavity 6 is bigger, the intermediate resonance peak of earphone is got over
Toward high-frequency mobile, and the first breach on knot fixture 4 is the avoidance for the formation setting of the second cavity 6, the body of the first breach
Product directly influences the size of the second cavity 6；Wherein, the first breach could be arranged to step-like structure (as shown in Figure 1), also may be used
To be set to curved-surface structure, the shape of the first breach and volume all can be adjusted according to product size, production requirement etc., and
It is not limited to structure shown in accompanying drawing.
In addition, the interface channel 7 of the first cavity 5 of connection and the second cavity 6 may be alternatively provided as arc or curved-surface structure, i.e.,
The second breach of arcuate structure is provided near the side of housing in knot fixture 4, the second breach is cooperatively formed even with housing
Connect road 7.
In another embodiment of the present invention, housing include the back cover 2 of pyramidal structure and with 2 company of adaptation of back cover
The fore shell 1 for connecing；The acoustic aperture that of earphone is provided with fore shell 1, and horn single body 3 is formed away from the side of knot fixture 4 and gone out
The front operatic tunes of acoustic aperture conducting, the first cavity 5 and the second cavity 6 form double rear acoustical cavity.
Knot for avoiding earphone cord extrudes horn single body, and the knot fixture 4 of the embodiment of the present invention is set to taper knot
Structure, and sectional area of the knot fixture 4 near 3 side of horn single body is more than its sectional area away from 3 side of horn single body, online
Knot fixture 4 arranges the oriented accepting groove away from 3 side of horn single body depression on the end face of horn single body 3, earphone cord
Knot is spacing in accepting groove；Fair line pipeline is then located in accepting groove, and is turned on accepting groove, and the knot of earphone cord is fixed on receipts
Tank, the other end of earphone cord is drawn by fair line pipeline.
Additionally, horn single body 3 further includes vibrational system and magnetic circuit system；Wherein, vibrational system include vibrating diaphragm and
It is sticked in the voice coil loudspeaker voice coil of vibrating diaphragm side, magnetic circuit system includes the conductive magnetic yoke for setting gradually, the Magnet being fixed in conductive magnetic yoke and fixation
Washer on magnet.
Specifically, the magnetic circuit system of horn single body 3 could be arranged to single magnetic structure or two magnetic route structure；When magnetic circuit system
When uniting as two magnetic route structure, Magnet include centring magnet and around centring magnet arrange side Magnet, washer include respectively with
Heart Magnet and while the corresponding center washer of Magnet and while washer；Centring magnet and center washer with while Magnet and while washer between shape
Become magnetic gap, voice coil loudspeaker voice coil is hung in magnetic gap, when the voice coil loudspeaker voice coil in magnetic field has tone currentss to flow through, an alternation can be subject to
Motive force produces alternate motion, so as to drive vibrating diaphragm to shake, and then promotes repeatedly air and sounding.
In the earphone of the present invention, pleasant gum cover is arranged with housing and adjusts the tune of the acoustical behavior of horn single body
Tablet material；Wherein, tuning sheet material is screen cloth, sponge or non-woven fabrics.Wherein, the pleasant gum cover can adopt silica gel or high resiliency
The materials such as polyester are made, and can be in close contact with auditory meatus after which inserts auditory meatus, enter middle ear and internal ear to completely cut off sound
Interior, reach the purpose of sound insulation.One end of earphone cord is connected with horn single body, and the other end is provided with headset plug, is inserted by earphone
Head is used cooperatively with external portable electronic product (exterior terminal equipment).
The earphone of present invention offer be can be seen that by above-mentioned embodiment, the first cavity and the second cavity are all by even
Connect road to connect with back cavity sound regulating hole；Also, the volume of the second cavity is bigger, earphone intermediate resonance peak is more toward high-frequency mobile, energy
Enough the regulation that realizes to earphone intermediate frequency is coordinated jointly by the first cavity and the second cavity, improve tonequality and the performance of product.
Above with reference to accompanying drawing, the earphone according to the present invention is described in an illustrative manner.But, those skilled in the art should
Understanding, for the earphone proposed by the invention described above, various improvement can also be made on the basis of without departing from present invention.
Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (10)
1. a kind of earphone, including housing, earphone cord, is housed in the housing and horn single body with earphone cord conducting,
And the knot fixture being arranged in the housing；Characterized in that,
In the knot fixture, the side of the horn single body is provided with the first breach；
The first cavity, shape between first breach and the housing is formed between the knot fixture and the horn single body
Become the second cavity；
Bass pipeline is provided with the knot fixture and connects the connection of first cavity and second cavity
Passage；
The bass pipeline is connected with first cavity, and is isolated with second cavity.
2. earphone as claimed in claim 1, it is characterised in that
Back cavity sound regulating hole is provided with the housing, and the back cavity sound regulating hole is turned on the interface channel.
3. earphone as claimed in claim 1, it is characterised in that
The bass pipeline and the interface channel are located at the both sides up and down of the knot fixture；Also,
On the same cross section of the earphone, the bass pipeline and the interface channel are located at the straight of the knot fixture
On footpath.
4. earphone as claimed in claim 1, it is characterised in that
The middle part of the knot fixture is provided with fair line passage；
The knot of the earphone cord is fixed between the horn single body and the knot fixture, and the earphone cord is by described
Fair line passage along go out.
5. earphone as claimed in claim 4, it is characterised in that
On the same cross section of the earphone, the fair line passage, the interface channel and the bass pipeline are located at described
The same of knot fixture is diametrically.
6. earphone as claimed in claim 4, it is characterised in that also include to be arranged on the earphone handle of the housing side；Wherein,
Be provided with drawing lines corresponding with the fair line passage in the earphone handle, through the fair line passage earphone cord by institute
State drawing lines extraction.
7. earphone as claimed in claim 1, it is characterised in that
First breach is step-like structure or curved-surface structure.
8. earphone as claimed in claim 1, it is characterised in that
Be provided with the second breach of arcuate structure near the side of the housing in the knot fixture, second breach with
The housing cooperatively forms the interface channel.
9. earphone as claimed in claim 1, it is characterised in that
The housing includes the back cover of pyramidal structure and the fore shell being connected with back cover adaptation；
Be provided with out acoustic aperture on the fore shell, the horn single body away from the knot fixture side formed with described go out
The front operatic tunes of acoustic aperture conducting.
10. earphone as claimed in claim 1, it is characterised in that
In the knot fixture, the side of the horn single body is provided with accepting groove, the knot of the earphone cord spacing
In the accepting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610911299.5A CN106454591B (en) | 2016-10-19 | 2016-10-19 | Earphone set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610911299.5A CN106454591B (en) | 2016-10-19 | 2016-10-19 | Earphone set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106454591A true CN106454591A (en) | 2017-02-22 |
| CN106454591B CN106454591B (en) | 2020-06-12 |
Family
ID=58177166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610911299.5A Active CN106454591B (en) | 2016-10-19 | 2016-10-19 | Earphone set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106454591B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021006833A1 (en) * | 2019-07-11 | 2021-01-14 | Saygin Yavuz | In-ear headphone with private acoustic room |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4588867A (en) * | 1982-04-27 | 1986-05-13 | Masao Konomi | Ear microphone |
| EP0143383B1 (en) * | 1980-10-31 | 1987-05-06 | Sony Corporation | Electro-acoustic transducers |
| WO1997011573A1 (en) * | 1995-09-19 | 1997-03-27 | Interval Research Corporation | Acoustically transparent earphones |
| US20060034476A1 (en) * | 2004-08-12 | 2006-02-16 | Cardo Corp. | Headset case arrangement for wind control |
| CN101400006A (en) * | 2007-09-28 | 2009-04-01 | 李轩 | Line-doffing-proof earphone |
| CN104244130A (en) * | 2014-09-05 | 2014-12-24 | 歌尔声学股份有限公司 | Earphone |
| US20150110330A1 (en) * | 2012-06-20 | 2015-04-23 | Apple Inc. | Earphone having an acoustic tuning mechanism |
| US20150163583A1 (en) * | 2012-06-20 | 2015-06-11 | Apple Inc. | Earphone having a controlled acoustic leak port |
| CN105072530A (en) * | 2015-08-24 | 2015-11-18 | 广州酷狗计算机科技有限公司 | Earphone |
| CN105228039A (en) * | 2014-06-27 | 2016-01-06 | 苹果公司 | The quality with draft chamber loads earplug |
| CN205071260U (en) * | 2015-08-18 | 2016-03-02 | 中山雄声电子有限公司 | Earphone with two sound cavities |
| US20160293156A1 (en) * | 2014-10-30 | 2016-10-06 | Charter Media (Dongguan) CO. Ltd. | In-ear headphones with noise reduction effect |
| CN206164789U (en) * | 2016-10-19 | 2017-05-10 | 歌尔股份有限公司 | Earphone |
-
2016
- 2016-10-19 CN CN201610911299.5A patent/CN106454591B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0143383B1 (en) * | 1980-10-31 | 1987-05-06 | Sony Corporation | Electro-acoustic transducers |
| US4588867A (en) * | 1982-04-27 | 1986-05-13 | Masao Konomi | Ear microphone |
| WO1997011573A1 (en) * | 1995-09-19 | 1997-03-27 | Interval Research Corporation | Acoustically transparent earphones |
| US20060034476A1 (en) * | 2004-08-12 | 2006-02-16 | Cardo Corp. | Headset case arrangement for wind control |
| CN101400006A (en) * | 2007-09-28 | 2009-04-01 | 李轩 | Line-doffing-proof earphone |
| US20150110330A1 (en) * | 2012-06-20 | 2015-04-23 | Apple Inc. | Earphone having an acoustic tuning mechanism |
| US20150163583A1 (en) * | 2012-06-20 | 2015-06-11 | Apple Inc. | Earphone having a controlled acoustic leak port |
| CN105228039A (en) * | 2014-06-27 | 2016-01-06 | 苹果公司 | The quality with draft chamber loads earplug |
| CN104244130A (en) * | 2014-09-05 | 2014-12-24 | 歌尔声学股份有限公司 | Earphone |
| US20160293156A1 (en) * | 2014-10-30 | 2016-10-06 | Charter Media (Dongguan) CO. Ltd. | In-ear headphones with noise reduction effect |
| CN205071260U (en) * | 2015-08-18 | 2016-03-02 | 中山雄声电子有限公司 | Earphone with two sound cavities |
| CN105072530A (en) * | 2015-08-24 | 2015-11-18 | 广州酷狗计算机科技有限公司 | Earphone |
| CN206164789U (en) * | 2016-10-19 | 2017-05-10 | 歌尔股份有限公司 | Earphone |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021006833A1 (en) * | 2019-07-11 | 2021-01-14 | Saygin Yavuz | In-ear headphone with private acoustic room |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106454591B (en) | 2020-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6491256B2 (en) | Headphone device | |
| CN101106831B (en) | Earphone for placement in an ear | |
| CN103167387B (en) | There is the Microspeaker in internal resonance chamber | |
| US8989425B2 (en) | Earphone | |
| WO2017012530A1 (en) | Earphone | |
| KR100887248B1 (en) | Multi-functional earphone assembly | |
| WO2018157535A1 (en) | Speaker and earplug earphones | |
| WO2015027900A1 (en) | Earphone | |
| CN105612760A (en) | Bone Conduction Speaker | |
| WO2022213459A1 (en) | Acoustic output device | |
| CN104244130A (en) | Earphone | |
| CN208112885U (en) | Double unit earphones and electronic equipment | |
| CN206402403U (en) | Earphone with double preceding operatic tunes | |
| CN206164794U (en) | Earphone | |
| CN208987157U (en) | A kind of horn single body and a kind of audio-frequence player device | |
| CN206004873U (en) | A kind of headset | |
| CN109246534A (en) | A kind of horn single body and a kind of audio-frequence player device | |
| CN107371077A (en) | The earphone of moving-coil piezoelectricity double-tone band loudspeaker | |
| CN204968061U (en) | Earphone | |
| CN206061072U (en) | Earphone | |
| CN206164789U (en) | Earphone | |
| CN106454591A (en) | Earphone | |
| KR101539064B1 (en) | Earphone having multi-echo spaces | |
| CN101199232A (en) | In-ear phone | |
| CN205754845U (en) | Loudspeaker and be provided with the earphone of these loudspeaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |