CN202931543U - Loudspeaker - Google Patents
Loudspeaker Download PDFInfo
- Publication number
- CN202931543U CN202931543U CN 201220538734 CN201220538734U CN202931543U CN 202931543 U CN202931543 U CN 202931543U CN 201220538734 CN201220538734 CN 201220538734 CN 201220538734 U CN201220538734 U CN 201220538734U CN 202931543 U CN202931543 U CN 202931543U
- Authority
- CN
- China
- Prior art keywords
- basin
- baffle plate
- loud speaker
- base
- adjacent
- 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.)
- Expired - Lifetime
Links
- 230000000694 effects Effects 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 20
- 229910052742 iron Inorganic materials 0.000 description 10
- 230000006854 communication Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012814 acoustic material Substances 0.000 description 2
- 238000010923 batch production Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
Abstract
The utility model provides a loudspeaker which is arranged in a loudspeaker box and can generate sound wave, the loudspeaker comprises at least two basin rack structures which are mutually coaxial and connected in a parallel mode, each basin rack structure has a basin rack and a paper cone used for generating the sound wave; each basin rack is in a cylindrical shape, a gap used for transmitting the sound wave to the corresponding basin rack is formed on the sidewall, and the orientation directions of the gaps on adjacent two basin racks are opposite. According to the loudspeaker, various basin rack structures are connected in the parallel mode, the basin rack of each basin rack structure form the gap used for transmitting the sound by employing a pedestal and a baffle plate, and the gap facing directions of adjacent basin rack structures are opposite, phases difference of the sound wave generated by the paper cone of the adjacent basin rack structures is 180 DEG, so that two sound waves can generate interfere to enhance the transmission effect of the sound while being overlapped, and the sound short circuit can be improved.
Description
Technical field
The utility model relates to sound technique, relates in particular to a kind of for the loud speaker in sound equipment.
Background technology
In loud speaker, voice coil loudspeaker voice coil can produce sharp pounding after connecting audio signal in magnetic field.Because voice coil loudspeaker voice coil is fixed on cone, therefore, the vibrations of voice coil loudspeaker voice coil drive simultaneously the cone vibrations and send sound.In prior art, generally can improve the efficient of loud speaker and expand its low frequency performance by the area that increases cone.The area that increases cone can be by laterally with longitudinally expanding, the former directly increases the diameter of cone, the bore of loud speaker is also corresponding to be increased greatly, this mode can make loud speaker multinomial performance index improve, as: sensitivity, resonance frequency etc., but the increase of the bore of loud speaker increases the volume of loud speaker greatly, the audio amplifier thick heaviness that seems; Thereby the latter increases the cone areas by a plurality of cones of series connection, and magnetic circuit device is arranged on the arbitrary end of voice coil loudspeaker voice coil, and on this voice coil loudspeaker voice coil a plurality of cones of serial connection side by side, these cones form an integral body, co-operation, thereby increased the gross area of cone.Yet in actual production, fix a plurality of cones and have suitable difficulty with the bullet ripple on the basin frame, cause being difficult to improve by the mode of Longitudinal Extension the efficient of loud speaker.
In addition, in communication process, when the sound wave that runs into its single spin-echo, two row sound waves can cancel out each other or weaken, and therefore make sound diminish and cause occurring the acoustic short circuit phenomenon due to sound wave.In prior art, usually realize suppressing acoustic short circuit with the sound panel that is arranged between adjacent cone, but sound transmission can along all directions, so sound panel can only suppress the living short circuit that the part Acoustic Wave Propagation produces, not be therefore clearly to improving acoustic short circuit phenomenon effect.
The utility model content
Main purpose of the present utility model is to provide a kind of loud speaker, is intended to improve the acoustic short circuit phenomenon on the basis of the manufacture difficulty that do not increase the volume of loud speaker and do not increase loud speaker.
The utility model provides a kind of loud speaker that is arranged in audio amplifier and produces sound wave, this loud speaker comprise mutually coaxial and and connect at least two basin shelf structures of setting, each basin shelf structure has the basin frame and affixes to this basin frame and for generation of the cone of sound wave; Each described basin frame is tubular, is formed with the breach that goes out corresponding basin frame for the Acoustic Wave Propagation that produces for this cone on its sidewall, and the breach on adjacent two described basin framves towards opposite direction.
Preferably, each described basin frame has base and baffle plate, and described base is tubular, and described baffle plate extends and curved sheet on the end by this base, and the baffle plate of adjacent two described basin framves is towards the opposite, and described breach is arranged on described base by described baffle plate and forms.
Preferably, described baffle plate semicircular in shape.
Preferably, described base is coaxial with described baffle plate, and the thickness of the outer surface of described baffle plate and described base concordant with the outer surface of described base is greater than the thickness of described baffle plate.
Preferably, described cone is peviform and middle part and has the hole that the voice coil loudspeaker voice coil for described loud speaker passes, and the outward flange of described cone affixes on the end that is extended with described baffle plate of corresponding base.
Preferably, one-body molded between described base and corresponding baffle plate.
Preferably, described loud speaker also comprises be used to the snap-in structure that connects adjacent two described basin framves, and wherein said snap-in structure comprises at least one projection and at least one groove that matches with described at least one projection.
Preferably, the one of adjacent two described basin framves be provided with described projection on the end of extended baffle plate, be provided with the groove that matches with described projection on the base of adjacent two described basin frame another one.
Preferably, the one of adjacent two described basin framves be provided with described groove on the end of extended baffle plate, be provided with the projection that matches with described groove on the base of adjacent two described basin frame another one.
Preferably, each described basin shelf structure also comprises and affixing on described base away from the bullet ripple on the end of corresponding baffle plate.
Loud speaker of the present utility model, by and connect a plurality of basin shelf structures be set, the basin frame of each basin shelf structure is formed for soniferous breach by the mode that adopts base and baffle plate, and the breach on adjacent two basin shelf structures is towards the opposite, make 180 ° of the phase phasic differences of the sound wave that the cone of adjacent two basin shelf structures produces, so, two sound waves can interfere when meeting and strengthen the communication effect of sound, have suppressed to a certain extent the acoustic short circuit phenomenon.
In addition, loud speaker of the present utility model by and connect the area that a plurality of basin shelf structures increase cone be set, only be pasted with a cone on each basin frame, and need not on a basin frame to paste a plurality of cones and cause occurring between a plurality of cones the interactional situation of sound wave, be conducive to realize the batch production of loud speaker, reduce costs and fraction defective.
Description of drawings
Fig. 1 is the decomposition texture schematic diagram of the better embodiment of the utility model loud speaker.
Fig. 2 is basin shelf structure and the snap-in structure schematic diagram of loud speaker shown in Figure 1.
The realization of the utility model purpose, functional characteristics and advantage are described further with reference to accompanying drawing in connection with embodiment.
Embodiment
Should be appreciated that specific embodiment described herein only is used for explaining the utility model, and be not used in restriction the utility model.
Please refer to Fig. 1, it is the decomposition texture schematic diagram of the better embodiment of the utility model loud speaker 100.Loud speaker 100 comprises T iron 10, affix to the voice coil loudspeaker voice coil 20 of T iron 10 and be socketed in successively on voice coil loudspeaker voice coil 20 and magnet 30, the magnetic conductive board 40 of mutual coaxial setting, and at least two and connect the basin shelf structure 50 of setting.The combination of T iron 10, magnet 30 and magnetic conductive board 40 has consisted of the magnetism loop, is used for when voice coil loudspeaker voice coil 20 vibrates because of conduction, coil being supplied with direct current flux with the right angle.In the present embodiment, following content all includes the two adjacent and basin shelf structures that connect setting take loud speaker 100 and describes as example, yet, need to prove, the quantity of basin shelf structure 50 is not limited to the present embodiment, in other embodiments, the quantity of basin shelf structure 50 can be adjusted according to actual needs, for example, can be four, can also be five or six etc., this is not restricted herein.
In conjunction with Fig. 2, each basin shelf structure 50 comprises interconnective basin frame 51, cone 52 and plays ripple 53.Basin frame 51 is used for realizing with cone 52, plays ripple 53, magnet 30, and the element such as magnetic conductive board 40 fits together, and also is used for realizing loud speaker 100 is mounted to sound box.Basin frame 51 comprises base 51a and baffle plate 51b.Base 51a roughly is cylindric and has relative both ends.Baffle plate 51b extends (see figure 2) on the end by base 51a.Baffle plate 51b is roughly curved and coaxial with base 51a, and its outer surface is mutually concordant with the outer surface of base 51a, and its thickness is less than the thickness (see figure 1) of base 51a.Due to the curved but not tubular of baffle plate 51b, have thereby make the breach that is used for going out for sound transmission corresponding basin shelf structure 50 that is formed on himself sidewall on basin frame 51.Further, in the present embodiment, baffle plate 51b is the semicircle tubular.Cone 51 roughly be peviform and with the coaxial setting of basin frame 51, its outward flange affixes on the end that base 51a is extended with baffle plate 51b.Playing ripple 53 also roughly is peviform and its outward flange and affixes on the end of base 51a away from baffle plate 51b.In the present embodiment, play ripple 53 and made by acoustic material, can completely cut off the reverse sound wave that cone 51 produces.
Be appreciated that in the present embodiment, basin frame 51 can adopt integrated mode to make, and can also be other connected modes, and for example bonding is not restricted this herein, and as preferably, the first cone 51a and the first baffle plate 51b are one-body molded.
Need to prove, just as shown in fig. 1, in the present embodiment, loud speaker 100 includes two above-mentioned basin shelf structures 50, and this two basins shelf structure 50 is coaxial and connect setting, but on this two basins shelf structure 50 formed breach towards opposite direction.
In conjunction with reference to figure 2, loud speaker 100 further includes the snap-in structure 70 that is arranged between adjacent two basin shelf structures 50, is used for adjacent two basin shelf structures 50 are snapped into the setting connected with each other that realizes together between adjacent two basin shelf structures 50.Snap-in structure 70 comprise be convexly set in a plurality of protruding 71 on one of them basin shelf structure 50 and be opened on another basin shelf structure 50 and with a plurality of protruding 71 many each groove (not shown) one to one.In the present embodiment, a plurality of protruding 71 are uniformly distributed on the side of baffle plate 51b away from respective seat 51a of a basin shelf structure 50 wherein, and a plurality of grooves are corresponding being opened on the base 51a of adjacent basin shelf structure 50.A plurality of protruding 71 are sticked in a plurality of grooves respectively one by one, thereby make adjacent two basin shelf structures 50 mutually firmly to connect.
Be appreciated that snap-in structure 70 is not limited to the situation of the present embodiment.In other embodiments, projection 71 can be formed on the base 51a of a basin shelf structure 50 wherein, and groove also can correspondingly be opened on the baffle plate 51b of adjacent basin shelf structure 50; Perhaps, projection 71 can partly be formed on the base 51a of a basin shelf structure 50 wherein, part is formed on the baffle plate 51b of adjacent basin shelf structure 50, correspondingly, groove part is opened on the baffle plate 51b of a basin shelf structure 50 wherein, part is opened on the base 51a of adjacent basin shelf structure 50, thereby being used for matching with projection 71 one by one makes adjacent two basin shelf structures 50 mutually firmly be connected.
Be appreciated that in other embodiments, also can be not limited only to realize by engaging connected with each other between adjacent two basin shelf structures 50.In certain embodiments, adjacent two basin shelf structures also can by stickup realize connected with each other or directly one-body molded realize connected with each other.
During assembling, at first center pillar outstanding on T iron 10 is passed successively the centre bore of magnet 30 and magnetic conductive board 40, magnet 30 and magnetic conductive board 40 are socketed on T iron 10 and magnet 30 and magnetic conductive board 40 are pasted and be fixed to T iron 10, an end with voice coil loudspeaker voice coil 20 affixes on the outstanding center pillar of T iron 10 again, thereby completes the assembling of first articulation part.Then begin adjacent two basin shelf structure 50 assemblings are connected together: the bullet ripple 53 in each basin shelf structure 50 is affixed on the end away from baffle plate 51b of base 51a, again cone 52 being affixed to extending of base 51a has on the end of the first baffle plate 51b, make the outward flange of cone 52 affix on the end of base 51a, form basin shelf structure 50 thereby basin frame 51, cone 52 and bullet ripple 53 are fitted together.In this basin shelf structure 50, basin frame 51, cone 52 and the coaxial setting of bullet ripple 53.Then, the baffle plate 51b that keeps one of them basin shelf structure 50 towards with the towards the opposite of the baffle plate 51b of another basin shelf structure 50 and this two basins shelf structure 50 coaxial basis of putting on, the projection 71 that is arranged on the baffle plate 51b of one of them basin shelf structure 50 is inserted in the upper corresponding groove of the base 51a that is opened in another basin shelf structure 50, and realization should adjacent two coaxial connecting together of basin shelf structure 50.So, the breach on adjacent two the basin shelf structures 50 after connecting together towards opposite direction.Then, the other end that the one end has been pasted the voice coil loudspeaker voice coil 20 that is provided with T iron 10, magnet 30 and magnetic conductive board 40 passes the centre bore of bullet ripple 53, base 51a, baffle plate 51b and the cone 52 of these adjacent two basin shelf structures 50 successively, and make each basin shelf structure 50 stickups be fixed to voice coil loudspeaker voice coil 20, complete the assembling of loud speaker 100.In the loud speaker 100 that assembles, one of them basin shelf structure 50 is between magnetic conductive board 40 and another basin shelf structure 50.
When the loud speaker 100 that will assemble is installed in audio amplifier, can make on one of them basin shelf structure 50 formed breach towards the front of audio amplifier, also namely towards audio amplifier in the face of user's a side, make on another basin shelf structure 50 formed breach towards the back side of audio amplifier.
During work, voice coil loudspeaker voice coil 20 produces sharp pounding in magnetic field after connecting audio signal.Because the cone 52 of each basin shelf structure 50 all fixedly affixes to voice coil loudspeaker voice coil 20, therefore, the vibrations of voice coil loudspeaker voice coil 20 can drive each cone 52 vibrations simultaneously, force air vibrations occur and sound.Particularly, the forward sound wave that produces near the cone 52 of the basin shelf structure 50 of magnetic conductive board 40 1 sides transmits in himself cone 52 and another layer basin shelf structure 50 formed spaces, and under the obstruct and reflex of the bullet ripple 53 of himself baffle plate 51b and another basin shelf structure 50, formedly from this basin shelf structure 50 blaze abroad towards the breach in audio amplifier front, the reverse sound wave that the cone 52 of this basin shelf structure 50 produces is subject to himself and plays the insulating effect of ripple 53 and can't be transmitted to magnetic conduction iron 40; Simultaneously, the forward sound wave that produces away from the cone 52 of another basin shelf structure 50 of magnetic conductive board 40 transmits in himself cone 52 and voice box casing formed space and blazes abroad from the breach towards the audio amplifier back side that himself forms, and the reverse sound wave that himself cone 52 produces is subject to himself playing the insulating effect of ripple 53 and can't be transmitted in the close basin shelf structure 50 of magnetic conduction iron 40 1 sides.towards the opposite due to formed breach on this two adjacent basin shelf structure 50 in audio amplifier, be also, near the breach on the basin shelf structure 50 of magnetic conductive board 40 1 sides towards audio amplifier positive and on away from another basin shelf structure 50 of magnetic conductive board 40 formed breach towards the audio amplifier back side, therefore, the phase difference of the sound wave that the cone 52 of these adjacent two basin shelf structures 50 produces is 180 °, so, when two sound waves overlap again, according to sound wave stack principle of interference, two sound waves are because phase difference is 180 ° of communication effects that interfere and then strengthen sound, greatly improved the operating efficiency of loud speaker 100.
Loud speaker 100 of the present utility model, by and connect a plurality of basin shelf structures be set, the basin frame of each basin shelf structure is formed for soniferous breach by the mode that adopts base and baffle plate, and the breach of adjacent two basin shelf structures is towards the opposite, make phase phasic difference 180 degree of the sound wave that the cone of adjacent two basin shelf structures produces, so, two sound waves can interfere when overlapping and strengthen the communication effect of sound.In addition, because the bullet ripple of each basin shelf structure all affixes to corresponding base away from the end of baffle plate and all adopt acoustic material to make, therefore forward sound wave and the reverse sound wave that corresponding cone can be produced separate, and the forward sound wave of avoiding reverse sound wave that one of them basin shelf structure 50 produces and another basin shelf structure 50 to produce offsets and produces the phenomenon of acoustic short circuit.In addition, loud speaker of the present utility model by and connect the area that a plurality of basin shelf structures increase cone be set, only be pasted with a cone on each basin frame, and need not on a basin frame to paste a plurality of cones and cause occurring between a plurality of cones the interactional situation of sound wave, be conducive to realize the batch production of loud speaker, reduce costs and fraction defective.
The above is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present utility model.
Claims (10)
1. the loud speaker that can be arranged in audio amplifier and produce sound wave, is characterized in that, this loud speaker comprise mutually coaxial and and connect at least two basin shelf structures of setting, each basin shelf structure has the basin frame and affixes to this basin frame and for generation of the cone of sound wave; Each described basin frame is tubular, is formed with the breach that goes out corresponding basin frame for the Acoustic Wave Propagation that produces for this cone on its sidewall, and the breach on adjacent two described basin framves towards opposite direction.
2. loud speaker as claimed in claim 1, it is characterized in that, each described basin frame has base and baffle plate, described base is tubular, extend also curved on the end of described baffle plate by this base, and the baffle plate of adjacent two described basin framves is towards the opposite, and described breach is arranged on described base by described baffle plate and forms.
3. loud speaker as claimed in claim 2, is characterized in that, described baffle plate semicircular in shape.
4. loud speaker as claimed in claim 2, is characterized in that, described base is coaxial with described baffle plate, and the thickness of the outer surface of described baffle plate and described base concordant with the outer surface of described base is greater than the thickness of described baffle plate.
5. loud speaker as claimed in claim 2, is characterized in that, described cone is peviform and middle part and has the hole that the voice coil loudspeaker voice coil for described loud speaker passes, and the outward flange of described cone affixes on the end that is extended with described baffle plate of corresponding base.
6. loud speaker as claimed in claim 2, is characterized in that, and is one-body molded between described base and corresponding baffle plate.
7. loud speaker as claimed in claim 2, it is characterized in that, described loud speaker also comprises be used to the snap-in structure that connects adjacent two described basin framves, and wherein said snap-in structure comprises at least one projection and at least one groove that matches with described at least one projection.
8. loud speaker as claimed in claim 7, is characterized in that, the one of adjacent two described basin framves be provided with described projection on the end of extended baffle plate, be provided with the groove that matches with described projection on the base of adjacent two described basin frame another one.
9. loud speaker as claimed in claim 7 or 8, is characterized in that, the one of adjacent two described basin framves be provided with described groove on the end of extended baffle plate, be provided with the projection that matches with described groove on the base of adjacent two described basin frame another one.
10. loud speaker as claimed in claim 2, is characterized in that, each described basin shelf structure also comprises and affixing on described base away from the bullet ripple on the end of corresponding baffle plate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220538734 CN202931543U (en) | 2012-10-19 | 2012-10-19 | Loudspeaker |
| PCT/CN2013/083002 WO2014059837A1 (en) | 2012-10-19 | 2013-09-05 | Loudspeaker and audio playback device having same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220538734 CN202931543U (en) | 2012-10-19 | 2012-10-19 | Loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202931543U true CN202931543U (en) | 2013-05-08 |
Family
ID=48221448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220538734 Expired - Lifetime CN202931543U (en) | 2012-10-19 | 2012-10-19 | Loudspeaker |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN202931543U (en) |
| WO (1) | WO2014059837A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014059837A1 (en) * | 2012-10-19 | 2014-04-24 | 深圳Tcl新技术有限公司 | Loudspeaker and audio playback device having same |
| CN111052760A (en) * | 2017-09-13 | 2020-04-21 | 福雷默合同会社 | Speaker device and sound box |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10280172B2 (en) | 2016-09-29 | 2019-05-07 | Araxes Pharma Llc | Inhibitors of KRAS G12C mutant proteins |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201869349U (en) * | 2010-12-06 | 2011-06-15 | 深圳Tcl新技术有限公司 | Loudspeaker |
| CN202127507U (en) * | 2011-07-05 | 2012-01-25 | 无锡杰夫电声有限公司 | Multi-sound cone speaker |
| CN102256197B (en) * | 2011-07-05 | 2013-10-30 | 无锡杰夫电声有限公司 | Loudspeaker with multiple sound cones |
| CN202931543U (en) * | 2012-10-19 | 2013-05-08 | 深圳Tcl新技术有限公司 | Loudspeaker |
-
2012
- 2012-10-19 CN CN 201220538734 patent/CN202931543U/en not_active Expired - Lifetime
-
2013
- 2013-09-05 WO PCT/CN2013/083002 patent/WO2014059837A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014059837A1 (en) * | 2012-10-19 | 2014-04-24 | 深圳Tcl新技术有限公司 | Loudspeaker and audio playback device having same |
| CN111052760A (en) * | 2017-09-13 | 2020-04-21 | 福雷默合同会社 | Speaker device and sound box |
| CN111052760B (en) * | 2017-09-13 | 2021-11-09 | 福雷默合同会社 | Speaker device and sound box |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014059837A1 (en) | 2014-04-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130508 |