CN101511048B - Electro-acoustic converter with novel vibrating system and manufacturing method for vibrating system - Google Patents
Electro-acoustic converter with novel vibrating system and manufacturing method for vibrating system Download PDFInfo
- Publication number
- CN101511048B CN101511048B CN200910019931A CN200910019931A CN101511048B CN 101511048 B CN101511048 B CN 101511048B CN 200910019931 A CN200910019931 A CN 200910019931A CN 200910019931 A CN200910019931 A CN 200910019931A CN 101511048 B CN101511048 B CN 101511048B
- Authority
- CN
- China
- Prior art keywords
- vibrating diaphragm
- voice coil
- edge part
- coil tube
- fixed
- 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.)
- Active
Links
Images
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The invention discloses an electroacoustic transducer with a new type vibration system and a method for manufacturing the vibration system. The electroacoustic transducer includes the vibration system, a magnetic circuit system and an assistant system fixed combined with the vibration system and the magnetic circuit system. The vibration system includes a vibration membrane and a sound coil canister combined with the vibration membrane, and the vibration membrane includes the vibration menbrane center part and the vibration membrane edge part, the magnetic circuit system includes a basin frame, the vibration membrane edge part is fixed on the basin frame and/or the assistant system, the sound coil canister down part is equipped with a drafting foot of the vibration system, the drafting foot is fixed on the basin frame and/or the assistant system. The design manufacturing technique is simple and can preferable restrain polarization of the electroacoustic transducer, reduce resonance frequency and distortion, and also can improve sensitivity of the electroacoustic transducer by adjusting a vertical position of the sound coil canister and improve acoustics performance.
Description
Technical field
The present invention is specifically related to a kind of miniature moving-coil type electroacoustic transducer, also relates to the manufacturing approach of above-mentioned electroacoustic transducer vibrational system.
Background technology
Along with the development in portable consumer series products markets such as portable notebook, mobile phone, a large amount of electro-acoustic transducing device particularly minitype moving-coil electroacoustic transducer is widely used.The basic structure of the miniature moving-coil type electroacoustic transducer of traditional structure generally comprises: vibrational system, magnetic circuit system and with vibrational system, magnetic circuit system secure bond auxiliary system together.Magnetic circuit system comprises washer, magnet and basin frame; Auxiliary system comprises protecgulum and shell; The vibrational system structure is as shown in Figure 1; Comprise vibrating diaphragm and the voice coil tube that combines with vibrating diaphragm; The combining of the edge of vibrational system through vibrating diaphragm and auxiliary system fixed; When in the voice coil tube conduct with ac signal the time, the voice coil tube through being connected with alternating current is the stressed vibrational system vibration sounding in vertical direction that drives in the magnetic gap that magnetic circuit system constitutes.The miniature electro-acoustic transducer of this structure, simple in structure, can satisfy the demand of portable consumer series products such as mobile phone, notebook preferably to acoustical behavior.But the miniature moving-coil type electroacoustic transducer of this traditional structure; Particularly the vibrational system structure of this transmission is prone to make miniature moving-coil type electroacoustic transducer to produce higher resonance frequency; Be prone to vibrational system offset from perpendicular vibration and produce bad hidden danger such as polarization, cause defectives such as distortion is bigger than normal.
In structural improvement design to the miniature moving-coil type electroacoustic transducer of above-mentioned traditional structure; The disclosed design like Chinese patent CN03119826.0 occurred: the Position Design in the corresponding bonding of vibrating diaphragm voice coil tube has the depression of holding said voice coil tube, said voice coil tube is installed in the depression of said vibrating diaphragm.Though this design can avoid voice coil tube to form polarization because of the skew that above-mentioned factor produces on the direction of vibration so that the adjusting of the installation of voice coil tube center and direction has effectively prevented the voice coil tube distortion.But this design; Can not further reduce the resonance frequency of miniature moving-coil type electroacoustic transducer unit; Can not be unfavorable for that the miniature moving-coil type electroacoustic transducer acoustical behavior further improves promoting aspect the acoustical behavioies such as sensitivity that improves miniature moving-coil type electroacoustic transducer and reduction distortion; And the depression in the above-mentioned design on the vibrating diaphragm and the assembly difficulty of voice coil tube are big, are unfavorable for the raising of production efficiency.So be necessary existing embodiment is improved, avoid above-mentioned bad hidden danger.
Summary of the invention
Technical problem to be solved by this invention provides a kind of electroacoustic transducer and vibrational system manufacturing approach thereof with novel vibrating system; Overcome original miniature electro-acoustic transducer defective that acoustical behavior exists in design process; Reducing the miniature moving-coil type electroacoustic transducer resonance frequency; Further the polarization of restraining moving-coil type electro-acoustic conversing device the time; Reduce the distortion of miniature moving-coil type electroacoustic transducer, can improve its acoustical behavior through regulating the sensitivity that voice coil tube is improved miniature moving-coil type electroacoustic transducer simultaneously.
For solving the problems of the technologies described above; Technical scheme of the present invention is: the electroacoustic transducer with novel vibrating system; Involving vibrations system, magnetic circuit system reach and said vibrational system, magnetic circuit system secure bond auxiliary system together, and said vibrational system comprises vibrating diaphragm and the voice coil tube that combines with vibrating diaphragm, and: said vibrating diaphragm comprises vibrating diaphragm central part and vibrating diaphragm edge part; Said magnetic circuit system comprises the basin frame; Said vibrating diaphragm edge part is fixed on said basin frame and/or the auxiliary system, and the lower end of said voice coil tube is provided with the tractive pin of vibrational system, and said tractive pin is fixed on said basin frame and/or the auxiliary system.It is simple that this independently vibrating diaphragm central part and vibrating diaphragm edge part design and produce technology; The better polarization of restraining moving-coil type electro-acoustic conversing device; Miniature moving-coil type electroacoustic transducer resonance frequency and distortion have been reduced; Can improve the sensitivity of miniature moving-coil type electroacoustic transducer simultaneously through the upright position of regulating voice coil tube, improve its acoustical behavior.
As further improvement, said tractive pin and said vibrating diaphragm central part or vibrating diaphragm edge part are integral structure.
As further improvement, the number of said tractive pin is at least two.Two or more stiff end designs can make the vibrational system of miniature moving-coil type electroacoustic transducer stable through stiff end, avoid bad hidden dangers such as polarization.
As further improving, said tractive pin is evenly distributed on said vibrating diaphragm edge part below again.Evenly distribution can make the stressed fixing more balance of whole vibrational system, makes the vibration performance of whole vibrational system more stable.
As further improving, said vibrating diaphragm edge part is a hollow structure again.
As further improving, said electroacoustic transducer with novel vibrating system is the internal magnetic circuit structure again.The miniature moving-coil type electroacoustic transducer of internal magnetic circuit structure is the preferred structure of present design, and present design also can be provided with holding tank or use in the miniature moving-coil type electroacoustic transducer of external magnetic circuit and double magnetic circuit of bar magnet and use on magnet.
As further improving, the edge of said vibrating diaphragm central part is provided with first annular sidewall, and said voice coil tube is sleeved on the said first annular sidewall outer surface.
As further improving again, the inward flange of said vibrating diaphragm edge part is provided with second annular sidewall, and said voice coil tube is sleeved on the interior perimeter surface of said second annular sidewall.This design can be regulated the height of voice coil loudspeaker voice coil through the height that changes sidewall, can regulate the sensitivity of miniature moving-coil type electroacoustic transducer, to realize better technique effect.
A kind of vibrational system manufacturing approach with electroacoustic transducer of novel vibrating system may further comprise the steps:
A. coiling voice coil tube respectively, make the vibrating diaphragm edge part and be provided with the vibrating diaphragm central part of tractive pin;
B. with the voice coil tube suit and be fixed in second annular sidewall of said vibrating diaphragm edge part on the perimeter surface, be assembled together voice coil tube and vibrating diaphragm edge part;
C. will be fixed with the voice coil tube suit of vibrating diaphragm edge part and be fixed on the first annular sidewall outer surface of said vibrating diaphragm central part, voice coil tube will be combined with the vibrating diaphragm central part;
D. the tractive pin with the vibrating diaphragm central part is fixed on the said basin frame, and the outward flange of said vibrating diaphragm edge part is fixed on the auxiliary system, and whole vibrational system is fixed.
Owing to adopted technique scheme; The invention has the beneficial effects as follows: the better polarization of restraining moving-coil type electro-acoustic conversing device; Miniature moving-coil type electroacoustic transducer resonance frequency and distortion have been reduced; Can improve the sensitivity of miniature moving-coil type electroacoustic transducer simultaneously through the upright position of regulating voice coil tube, improve its acoustical behavior.
Description of drawings
Fig. 1 is a miniature moving-coil type electroacoustic transducer vibrational system profile of the prior art;
Fig. 2 is the embodiment of the invention one generalized section;
Fig. 3 is the embodiment of the invention one a basin frame profile;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is the profile of the embodiment of the invention one vibrating diaphragm central part;
Fig. 6 is the vertical view of Fig. 5;
Fig. 7 is the stereogram of the embodiment of the invention one vibrating diaphragm edge part;
Fig. 8 is the assembling sketch map of the embodiment of the invention one vibrating diaphragm edge part and voice coil tube;
Fig. 9 is the assembling sketch map of the embodiment of the invention one vibrating diaphragm central part and vibrating diaphragm edge part;
Figure 10 is the profile of the embodiment of the invention two vibrating diaphragm central parts;
Figure 11 is the diaphragm structure vertical view of the embodiment of the invention three;
Figure 12 is the vertical view of the embodiment of the invention four diaphragm structures.
Embodiment
Embodiment one:
As shown in Figure 2, the miniature moving-coil type electroacoustic transducer of internal magnetic circuit comprises auxiliary system, vibrational system and magnetic circuit system, and said auxiliary system combines fixing with said vibrational system, magnetic circuit system.Auxiliary system comprises protecgulum 11 and shell 12; Vibrational system comprises vibrating diaphragm central part 21, vibrating diaphragm edge part 22 and the voice coil tube 23 that combines with vibrating diaphragm central part 21, vibrating diaphragm edge part 22; Vibrating diaphragm central part 21 is an absolute construction with vibrating diaphragm edge part 22; And the outward flange of vibrating diaphragm central part 21 and vibrating diaphragm edge part 22 all is a circular configuration; Be positioned on the vibrating diaphragm central part 21 of voice coil tube 23 lower ends, and be integrally formed with tractive pin 213 with it away from a side of vibrating diaphragm central part 21; Magnetic circuit system comprises washer 31, magnet 32 and the basin frame 33 that combines from top to bottom.
Basin frame 33 is circular, like Fig. 3 and shown in Figure 4, comprises support portion 331, lug boss 332 and holding tank 333.Support portion 331 is step-like, is used for through the fixing tractive pin 213 on the vibrating diaphragm central part 21 of modes such as bonding; Lug boss 332 is four sections a arc segment structure, and is evenly distributed on the bottom of basin frame 33, and lug boss 332 constitutes the magnetic conduction device that carries said magnetic circuit system magnetic flux with basin frame 33 bottoms; Holding tank 333 is the gap of the intersegmental formation of lug boss 332 adjacent arcs, and holding tank 333 can make gap and lug boss 332 secure bond of tractive pin 213 through holding tank 333.
The structure of vibrating diaphragm central part 21 such as Fig. 5 and shown in Figure 6; Vibrating diaphragm central part 21 comprises the support portion 212 and first annular sidewall 211 that supports voice coil tube 23; Voice coil tube support portion 212 is for supporting the loop configuration of voice coil tube 23, and its radius size is greater than the inside radius of said voice coil tube 23; First annular sidewall 211 is a vertical stratification, and it highly can be regulated and preset.Tractive pin 213 is for vibrating diaphragm central part 21 one and be evenly distributed on four claw-like structures of first annular sidewall, 211 lower limbs, being held of tractive pin 213 by said holding tank 333, and with said lug boss 332 adhesive bond together.
Vibrating diaphragm edge part 22 is a hollow structure, and the radius size of hollow space is greater than the outer radius of voice coil tube 23.Structure is as shown in Figure 7; Second annular sidewall 221 that vibrating diaphragm edge part 22 comprises vertical stratification and the edge part 222 that is used for fixing through mode such as bonding with said auxiliary system; The height of second annular sidewall 221 can be regulated and preset, and is preferred highly identical with first annular sidewall 211 in design.
Like Fig. 8, vibrational system manufacturing process shown in Figure 9, vibrational system can adopt following method step to make: A. coiling voice coil tube respectively 23, make vibrating diaphragm edge part 22 and be provided with the vibrating diaphragm central part 21 of tractive pin 213; B. with voice coil tube 23 suits and be fixed in second annular sidewall 221 of said vibrating diaphragm edge part 22 on the perimeter surface, be assembled together voice coil tube 23 and vibrating diaphragm edge part 22; C. will be fixed with voice coil tube 23 suits of vibrating diaphragm edge part 22 and be fixed on first annular sidewall, 211 outer surfaces of said vibrating diaphragm central part 21, voice coil tube 23 will be combined with vibrating diaphragm central part 21; D. the tractive pin 213 with vibrating diaphragm central part 21 is fixed on the said basin frame 33, and the outward flange of said vibrating diaphragm edge part 22 is fixed on the auxiliary system, and whole vibrational system is fixed.
The structural design of this vibrational system, vibrating diaphragm central part 221 is an absolute construction with edge part 222, and tractive pin 213 fixes whole vibrational system with edge part 222, and voice coil tube 23 is fixing jointly by vibrating diaphragm central part 21 and vibrating diaphragm edge part 22 simultaneously.This design is easy, and has guaranteed the stability of vibrational system at vertical vibration, has reduced the polarization of miniature moving-coil type electroacoustic transducer significantly, reduces the resonance frequency and the distortion defective of the miniature moving-coil type electroacoustic converting unit of knowing clearly; Voice coil tube 23 positions and highly can regulating simultaneously through the height of regulating first annular sidewall 211 and second annular sidewall 221; Through changing the length that voice coil tube 23 is arranged in magnetic gap; Make the position of voice coil tube 23 and highly be positioned at optimal position; Realization is to the adjusting of miniature moving-coil type electroacoustic transducer element sensitivity, and thisly realizes that other design technology of constructed effect is comparatively easy.
Embodiment two:
Present embodiment is that with the difference of embodiment one number of said tractive pin is different.Shown in figure 10; The number of tractive pin 213a is three in the present embodiment; Tractive pin 213a is evenly distributed on the edge of support portion 212a (not marking among the figure) lower end of the corresponding voice coil tube 23a of vibrating diaphragm central part 21a; This design can realize above-mentioned implementation process technique effect equally when can satisfying more production actual needs according to the factor of aspects such as magnetic structure.The number of tractive pin also can be designed as the design of other number in the improvement of this embodiment; The tractive pin also can design in other position that can make the vibrational system balance (like the bight of square vibrating diaphragm); The tractive pin is at least two in the preferred embodiment of the invention, and is evenly distributed on the edge of vibrating diaphragm central part.
Embodiment three:
Shown in figure 11, this implementation process is with the difference of above-mentioned enforcement: the outward flange shape of the edge shape of vibrating diaphragm central part 21b and vibrating diaphragm edge part 22b is different.The outward flange of vibrating diaphragm central part 21b core is shaped as circle in this programme, and the hollow structure of vibrating diaphragm edge part 22b is the circle of corresponding vibrating diaphragm central part 21b, but the outward flange shaped design is a track shape.In the improvement of this implementation process vibrating diaphragm central part 21b and vibrating diaphragm edge part 22b hollow space also can be designed as corresponding voice coil loudspeaker voice coil barrel structure as circle, track shape, ellipse, etc. the various combination between the vibrating diaphragm known configurations.
Embodiment four:
Shown in figure 12; This implementation process is with the difference of above-mentioned implementation process; The vibrating diaphragm 2c of this implementation process is a square structure, and tractive pin 213c is arranged on four folding corner regions of vibrating diaphragm central part 21c, and this tractive pin 213c is arranged on the vibrating diaphragm of square structure of the design of vibrating diaphragm central part 21c; Can realize the technique effect in the above-mentioned true process equally, tractive pin 213c also can design other position at the vibrating diaphragm edge part 21c that can implement this implementation process certainly.
In the implementation process of the invention, it is embodiment preferred that tractive pin and vibrating diaphragm central part are designed to integrative-structure, and the tractive pin also can design the all-in-one-piece structure with the vibrating diaphragm edge part; The miniature moving-coil type electroacoustic transducer of internal magnetic circuit is a preferred structure, and other structure such as external magnetic circuit and two magnetic route structure also can come embodiment of the present invention to create through the designs such as improvement to magnetic circuit; The design of other size that the outward flange of vibrating diaphragm central part and vibrating diaphragm edge part can embodiment of the present invention be created; The tractive pin also can combine to fix through basin frame and/or auxiliary system vibrating diaphragm; Central part and vibrating diaphragm edge part also can adopt number of various materials; And also can on the vibrating diaphragm edge part, set up, the designs such as support portion of corresponding voice coil tube bottom surface perhaps are not set, the neither enforcement that influences the invention at vibrating diaphragm central part and edge part.
Claims (4)
1. the electroacoustic transducer that has novel vibrating system; Involving vibrations system, magnetic circuit system reach and said vibrational system, magnetic circuit system secure bond auxiliary system together; Said vibrational system comprises vibrating diaphragm and the voice coil tube that combines with vibrating diaphragm, and it is characterized in that: said magnetic circuit system is the internal magnetic circuit structure, and said magnetic circuit system comprises the basin frame; Said vibrating diaphragm comprises vibrating diaphragm central part and vibrating diaphragm edge part; Said vibrating diaphragm edge part is fixed on said basin frame and/or the auxiliary system, and the edge of said vibrating diaphragm central part is provided with first annular sidewall, and said voice coil tube is sleeved on the said first annular sidewall outer surface; The inward flange of said vibrating diaphragm edge part is provided with second annular sidewall, and said voice coil tube is sleeved on the interior perimeter surface of said second annular sidewall;
The lower end of said voice coil tube is provided with the tractive pin of vibrational system, and the lower limb of said tractive pin and said first annular sidewall is wholely set, and said tractive pin is fixed on said basin frame and/or the auxiliary system.
2. the electroacoustic transducer with novel vibrating system as claimed in claim 1 is characterized in that: the number of said tractive pin is at least two.
3. the electroacoustic transducer with novel vibrating system as claimed in claim 2 is characterized in that: said tractive pin is evenly distributed on said vibrating diaphragm edge part below.
4. make the method for vibrational system as claimed in claim 1, may further comprise the steps:
A. coiling voice coil tube respectively, make the vibrating diaphragm edge part and be provided with the vibrating diaphragm central part of tractive pin;
B. with the voice coil tube suit and be fixed in second annular sidewall of said vibrating diaphragm edge part on the perimeter surface, be assembled together voice coil tube and vibrating diaphragm edge part;
C. will be fixed with the voice coil tube suit of vibrating diaphragm edge part and be fixed on the first annular sidewall outer surface of said vibrating diaphragm central part, voice coil tube will be combined with the vibrating diaphragm central part;
D. the tractive pin with the vibrating diaphragm central part is fixed on the said basin frame, and the outward flange of said vibrating diaphragm edge part is fixed on the auxiliary system, and whole vibrational system is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910019931A CN101511048B (en) | 2009-03-16 | 2009-03-16 | Electro-acoustic converter with novel vibrating system and manufacturing method for vibrating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910019931A CN101511048B (en) | 2009-03-16 | 2009-03-16 | Electro-acoustic converter with novel vibrating system and manufacturing method for vibrating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101511048A CN101511048A (en) | 2009-08-19 |
| CN101511048B true CN101511048B (en) | 2012-09-05 |
Family
ID=41003277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910019931A Active CN101511048B (en) | 2009-03-16 | 2009-03-16 | Electro-acoustic converter with novel vibrating system and manufacturing method for vibrating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101511048B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658312A (en) * | 2017-02-08 | 2017-05-10 | 歌尔股份有限公司 | Loudspeaker |
| CN109246534A (en) * | 2018-09-29 | 2019-01-18 | 歌尔科技有限公司 | A kind of horn single body and a kind of audio-frequence player device |
| CN110662155B (en) * | 2019-08-31 | 2021-11-26 | 歌尔股份有限公司 | Sound production device and assembly method thereof |
| AU2020350921B2 (en) * | 2019-09-19 | 2023-05-25 | Shenzhen Shokz Co., Ltd. | Acoustic output apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2193633Y (en) * | 1993-10-25 | 1995-03-29 | 邵春春 | Holder for speaker vibrating membrane |
| CN2209416Y (en) * | 1994-04-08 | 1995-10-04 | 蒙光中 | Loudspeaker without fixed core support |
| CN1346230A (en) * | 2000-08-24 | 2002-04-24 | 日本先锋公司 | Sound-electricity transducer |
| CN2822083Y (en) * | 2005-08-30 | 2006-09-27 | 陈友余 | Inner magnet large voice coil flat plate speaker |
-
2009
- 2009-03-16 CN CN200910019931A patent/CN101511048B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2193633Y (en) * | 1993-10-25 | 1995-03-29 | 邵春春 | Holder for speaker vibrating membrane |
| CN2209416Y (en) * | 1994-04-08 | 1995-10-04 | 蒙光中 | Loudspeaker without fixed core support |
| CN1346230A (en) * | 2000-08-24 | 2002-04-24 | 日本先锋公司 | Sound-electricity transducer |
| CN2822083Y (en) * | 2005-08-30 | 2006-09-27 | 陈友余 | Inner magnet large voice coil flat plate speaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101511048A (en) | 2009-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109348370B (en) | Sound production device | |
| CN209390315U (en) | Microphone device | |
| CN110166910A (en) | Loudspeaker | |
| CN109889964A (en) | Microphone device | |
| US10979821B2 (en) | Sound generator | |
| CN109362005B (en) | Sound production device | |
| CN201854416U (en) | Loudspeaker | |
| CN109348371B (en) | Sound production device | |
| CN109348373B (en) | Sound production device | |
| CN109379680B (en) | Sound production device | |
| CN205051866U (en) | Sounding device | |
| CN201667712U (en) | Moving-coil type electroacoustic transducer | |
| CN101511048B (en) | Electro-acoustic converter with novel vibrating system and manufacturing method for vibrating system | |
| US11856384B2 (en) | Speaker and electronic device | |
| CN109275075B (en) | Sound production device | |
| CN103067835B (en) | Coil-moving speaker and manufacture method thereof | |
| CN202019444U (en) | Diaphragm and movable coil type electro-acoustic transducer employing diaphragm | |
| CN209526865U (en) | Loudspeaker | |
| CN208158862U (en) | A kind of sounding device | |
| CN216391395U (en) | Loudspeaker | |
| CN202068566U (en) | Moving-coil electroacoustic converter | |
| CN202841506U (en) | Miniature electro-acoustic transducer | |
| CN201383868Y (en) | Electroacoustic transducer provided with novel vibration system | |
| CN202395978U (en) | Concave type diaphragm loudspeaker | |
| CN201657279U (en) | Moving coil type electroacoustic converter |
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 | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 No. 268 Dongfang Road, high tech Industry Development Zone, Weifang, Shandong Patentee before: Goertek Inc. |