CN105959885B - Bone-conduction speaker - Google Patents
Bone-conduction speaker Download PDFInfo
- Publication number
- CN105959885B CN105959885B CN201610366834.3A CN201610366834A CN105959885B CN 105959885 B CN105959885 B CN 105959885B CN 201610366834 A CN201610366834 A CN 201610366834A CN 105959885 B CN105959885 B CN 105959885B
- Authority
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- China
- Prior art keywords
- permanent magnet
- washer
- bone conduction
- stator
- 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.)
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Links
- 210000000988 bone and bone Anatomy 0.000 claims description 43
- 238000002360 preparation method Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 6
- 230000003068 static effect Effects 0.000 description 6
- 210000003027 ear inner Anatomy 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 101001045744 Sus scrofa Hepatocyte nuclear factor 1-beta Proteins 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000000860 cochlear nerve Anatomy 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 210000004880 lymph fluid Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000002985 organ of corti Anatomy 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- 210000003454 tympanic membrane Anatomy 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The present invention provides a kind of bone-conduction speaker, including vibrational system and with vibrational system stator system disposed in parallel, vibrational system includes washer, the coil and stator permanent magnet that stator system includes holder, is fixed on holder, wherein, holder includes the side wall of bottom and vertical base both sides, and a column core is provided in the middle part of bottom, coil is set in the outside of column core, and is fixed on the bottom of holder；Wherein, stator permanent magnet iron hoop is located at the periphery of coil, and is fixed on the bottom of holder, and stator permanent magnet includes the first permanent magnet being respectively set along the both sides of coil Y direction and the second permanent magnet for being respectively set along the both sides of coil X-direction；Wherein, the second permanent magnet is located at the side-lower of washer, and the height of the second permanent magnet is more than the height of the first permanent magnet.Using the present invention, it can solve the problems, such as that oscillator is easy collision with stator.
Description
Technical Field
The invention relates to the technical field of electroacoustic products, in particular to a bone conduction loudspeaker.
Background
Bone conduction is a sound conduction mode, which converts sound into mechanical vibration with different frequencies, and transmits sound waves through the skull, the bone labyrinth, the lymph fluid of the inner ear, the spiral organ, the auditory nerve and the auditory center of a human. Compared with a classical sound conduction mode of generating sound waves through a vibrating diaphragm, the bone conduction mode omits a plurality of sound wave transmission steps, can realize clear sound restoration in a noisy environment, and does not influence other people due to the fact that the sound waves are diffused in the air.
The bone conduction loudspeaker is a novel electroacoustic transducer developed based on a bone conduction sound conduction mode, and the bone conduction sound is clear and is not influenced by the external environment, and meanwhile, the eardrum of people cannot be damaged, so that the bone conduction loudspeaker is widely applied to the fields of earphones and the like. Existing bone conduction speakers typically include a vibration system and a stator system. The vibration system comprises an upper permanent magnet, a washer and an elastic sheet, and the washer is suspended above the stator system through the elastic sheet. The stator system comprises a bracket, a coil, permanent magnets on the left side and the right side of the bracket and an FPCB. The height of two edge magnets on the left side and the right side of a support needs to be increased for improving the sensitivity of an existing product, and the two edge magnets are arranged vertically below a vibrator, so that the static magnetic field force borne by the vibrator is large, the risk that the vibrator collides a stator under larger attraction force is easy to occur, and the overall acoustic performance is influenced.
Accordingly, the present invention has been made to solve the above-mentioned problems, and the present invention provides a novel bone conduction speaker.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a bone conduction speaker to solve a problem that a vibrator and a stator are easily collided.
The invention provides a bone conduction loudspeaker, which comprises a vibration system and a stator system arranged in parallel with the vibration system, wherein the vibration system comprises a washer, and the stator system comprises a bracket, a coil and a stator permanent magnet, wherein the coil and the stator permanent magnet are fixed on the bracket; the stator permanent magnet ring is arranged on the periphery of the coil and fixed at the bottom of the bracket, and the stator permanent magnet comprises a first permanent magnet and a second permanent magnet, wherein the first permanent magnet is arranged on two sides of the coil along the Y-axis direction, and the second permanent magnet is arranged on two sides of the coil along the X-axis direction; the second permanent magnet is located below the washer, and the height of the second permanent magnet is larger than that of the first permanent magnet.
Preferably, the first permanent magnet and the second permanent magnet are rectangular, circular, or fan-shaped permanent magnets.
Preferably, the number of the first permanent magnet and the number of the second permanent magnet are at least two.
In addition, it is preferable that the stator system further includes a circuit board; the circuit board is conducted with the coil and is connected with the internal and external circuits of the bone conduction loudspeaker.
In addition, the preferred scheme is that the support is magnetic conduction support, wherein, the bottom fixed connection of circuit board and support.
In addition, it is preferable that the washer includes a raised central portion and edge portions on both sides opposite to the central portion; and the vibration system also comprises a vibrator permanent magnet and an elastic sheet which are arranged at the central part of the washer, the edge part of the washer is elastically connected with the bracket through the elastic sheet, and the elastic sheet suspends the vibration system above the stator system.
In addition, the preferred scheme is that the elastic sheet comprises a fixing part combined with the bracket, a connecting part combined with the edge part of the washer and an elastic arm connecting the fixing part and the connecting part; the elastic pieces are arranged in two numbers, the fixing parts of the two elastic pieces are fixed on the support, and the connecting parts of the two elastic pieces are fixed on the edge part of the washer.
In addition, it is preferable that the fixing portion and the elastic arm are located in the same plane, and an extending direction of the fixing portion is perpendicular to an extending direction of the elastic arm, and the fixing portion is fixed to an end surface of the side wall of the bracket.
In addition, the edge part of the washer is preferably provided with an extending part which protrudes out of the side edge of the central part, and the extending part extends towards the combined elastic sheet.
According to the technical scheme, the height of the second permanent magnet in the Y-axis direction of the coil is reduced, the two first permanent magnets with larger heights are additionally arranged at the bottoms of the supports on two sides in the X-axis direction of the coil, and the second permanent magnet arranged in the X-axis direction of the coil is fixed below two sides of the washer, so that the design structure of the permanent magnets can reduce the static magnetic field force, increase the effective utilization rate of a magnetic field, reduce the probability that a vibrator collides with a stator, increase the sensitivity of a product and improve the performance of the product.
To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Further, the present invention is intended to include all such aspects and their equivalents.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description and appended claims, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 is an exploded view of a bone conduction speaker according to an embodiment of the present invention;
fig. 2 is a schematic side view of a bone conduction speaker according to an embodiment of the present invention;
fig. 3 is a schematic top view of a bone conduction speaker according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of a bone conduction speaker according to an embodiment of the present invention.
Wherein the reference numerals include: the vibrator permanent magnet comprises a vibrator permanent magnet 1, an elastic sheet 2, a washer 3, a coil 4, a stator permanent magnet 5, a first permanent magnet 51, a second permanent magnet 52, a support 6, a bottom 61, a side wall 62, a column core 63 and an electric connection plate 7.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details.
Aiming at the problems that the height of the side magnets is higher and the two side magnets are vertically below the vibrator, so that the static magnetic field force borne by the vibrator is large, the risk that the vibrator collides with a stator under larger attraction force is easy to occur, and the overall acoustic performance is influenced, the invention provides a novel bone conduction loudspeaker.
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In order to explain the structure of the bone conduction speaker provided by the present invention, fig. 1 to 4 exemplarily indicate the structure of the bone conduction speaker from different angles, respectively. Specifically, fig. 1 shows an exploded structure of a bone conduction speaker according to an embodiment of the present invention; fig. 2 illustrates a side view structure of a bone conduction speaker according to an embodiment of the present invention; fig. 3 illustrates a top view structure of a bone conduction speaker according to an embodiment of the present invention; fig. 4 shows a sectional structure of a bone conduction speaker according to an embodiment of the present invention.
As shown in fig. 1 to 4 in common, the bone conduction speaker provided by the present invention includes a vibration system and a stator system disposed in parallel with the vibration system. The vibration system comprises a washer 3, a vibrator permanent magnet 1 arranged at the center of the washer and an elastic sheet 2. The stator system comprises a bracket 6, a coil 4, a stator permanent magnet 5 and an electric connection plate 7, wherein the coil 4, the stator permanent magnet 5 and the electric connection plate 7 are fixed on the bracket 6, the bracket 6 comprises a bottom 61 extending along the X direction and side walls 62 vertical to two sides of the bottom 61, a column core 63 is arranged in the middle of the bottom 61, and the coil 4 is sleeved on the outer side of the column core 63 and fixed on the bottom 61 of the bracket 6; the stator permanent magnet 5 is arranged around the coil 4 and fixed on the bottom 61 of the bracket 6, and comprises two first permanent magnets 51 and two second permanent magnets 52.
Specifically, the electrical connection board 7 in the stator system is electrically connected to the coil 4 and used for connecting an internal circuit and an external circuit of the bone conduction speaker, the bracket 6 is made of a magnetic conductive material, and the circuit board 7 is fixedly connected to the bottom 61 of the bracket 6. The vibration system comprises a washer 3, a vibrator permanent magnet 1 arranged at the center of the washer 3 and an elastic sheet 2, wherein the washer 3 comprises a raised center part and edge parts at two sides opposite to the center part; the edge part of washer 3 passes through shell fragment 2 and support 6 elastic connection, and shell fragment 2 hangs the vibration system and establishes the top at stator system. The elastic sheet 2 comprises a fixing part combined with the support 6, a connecting part combined with the edge part of the washer 3 and an elastic arm connecting the fixing part and the connecting part.
In a specific embodiment of the present invention, two elastic sheets 2 are provided, the fixing portions of the two elastic sheets 2 are fixed on the bracket 6, and the connecting portions of the two elastic sheets 2 are fixed on the edge portion of the washer 3. The fixing part and the elastic arm are positioned in the same plane, the extending direction of the fixing part is perpendicular to the extending direction of the elastic arm, and the fixing part is fixed on the side wall 62 of the bracket. Two edge portions of the washer are provided with extension portions protruding out of the side edge of the central portion, and the two extension portions extend towards the combined elastic sheet respectively.
That is, an edge portion is provided on each of both sides of the center portion of the washer 3 in the longitudinal direction thereof, and the connecting portions of the two resilient pieces are fixed to the two edge portions, respectively. One end of each of the two edge portions is provided with an extending portion, the extending portions protrude out of the side edge of the central portion in the short axis direction, the extending directions of the extending portions are opposite, and the extending portions extend towards the direction of the elastic sheet combined with the extending portions respectively. The arrangement of the extension part increases the combination area between the elastic sheet 2 and the washer 3, so that the two can be combined more firmly. The upper surface of the central part of the washer 3 is higher than that of the edge part, the connecting part is fixed on the upper surface of the edge part, and after the washer 3 and the edge part are combined, the upper surface of the central part is flush with the upper surface of the elastic sheet 2, so that the structure is more favorable for vibration conduction.
In the embodiment of the present invention shown in fig. 1 to 3, the stator permanent magnet 5 includes two rectangular first permanent magnets 51 and two rectangular second permanent magnets 52. The first permanent magnet 51 and the two second permanent magnets 52 are arranged around the periphery of the coil 4 and fixed at the bottom 61 of the bracket, wherein the two first permanent magnets 51 are respectively arranged along two sides of the Y-axis direction of the coil 4, and the two second permanent magnets 52 are respectively arranged along two sides of the X-axis direction of the coil 4; namely: one first permanent magnet 51 is provided on the bottom portion 61 (bottom portion 61 of the bracket 6) on one side in the coil Y axis direction, and the other first permanent magnet 51 is provided on the bottom portion 61 (bottom portion 61 of the bracket 6) on the other side in the coil Y axis direction; one second permanent magnet 52 is provided on the bottom portion 61 of the bracket 6 on one side in the coil X-axis direction, and the other second permanent magnet 52 is provided on the bottom portion 61 of the bracket 6 on the other side in the coil X-axis direction. And the two second permanent magnets 52 are respectively located below the side of the washer 3, not vertically below the washer 3, and at the same time, the height of the second permanent magnets 52 is greater than that of the first permanent magnets 51.
That is, for original bone conduction speaker, reduce the height of two first permanent magnets 51 to set up two second permanent magnets 52 respectively in coil 4X axle direction's both sides along, the height of second permanent magnet 52 is great, and second permanent magnet 52 is in the both sides below of china department rather than the perpendicular below simultaneously, and this kind of design structure is when the oscillator vibration, and the oscillator is difficult to collide with stator system, thereby has mentioned the effective utilization ratio in magnetic field, has reduced invalid static magnetic force. Namely: the structure of the stator permanent magnet 5 can reduce the static magnetic field force, reduce the danger that the vibrator collides with the stator, increase the sensitivity and improve the performance of the product.
In another specific embodiment of the present invention, two or more permanent magnets may be combined together to be used as the first permanent magnet or the second permanent magnet if there is not a permanent magnet of sufficient size as the stator permanent magnet in the product application. The stator permanent magnet includes four first permanent magnets and four second permanent magnets. The four first permanent magnets are respectively arranged and fixed at the bottom along two sides of the Y-axis direction of the coil, namely, two first permanent magnets are arranged and fixed at the bottom of the bracket along one side of the Y-axis direction of the coil, and the other two first permanent magnets are arranged along the other side of the Y-axis direction of the coil; four second permanent magnets are respectively arranged along two sides of the X-axis direction of the coil and fixed at the bottom, namely: two second permanent magnets set up and fix in the bottom of support along one side of coil X axle direction, and two other second permanent magnets set up and fix in the bottom of support along the opposite side of coil X axle direction to four second permanent magnets are located the side below of china department respectively, and not the position of the perpendicular below of china department, and simultaneously, the height of second permanent magnet is higher, and the height of first permanent magnet can reduce.
In summary of the above embodiments, in the present invention, in an application of a product, the first permanent magnet and the second permanent magnet in the stator permanent magnet may be rectangular, or may also be circular, or in a fan shape, and the shape is not limited to the rectangular shape of the above embodiments. The number of the first permanent magnets and the number of the second permanent magnets may be two, or four, as necessary. That is, in the stator permanent magnet of the bone conduction speaker provided by the present invention, the number, shape and size of the first permanent magnet and the second permanent magnet are not limited to those shown in the above embodiments, and it is within the scope of the present invention to reduce the electrostatic force and the risk of the vibrator colliding with the stator, and to increase the sensitivity, as long as the design structure of the stator permanent magnet reduces the electrostatic force.
In each of the above embodiments of the present invention, the washer 3 includes a convex central portion, and in this embodiment, the central portion is preferably elliptical, and the long axis thereof is parallel to the long side of the bracket. The structure of the central portion in practical application is not limited to an ellipse, and a circle, a rectangle, etc. are all possible. The middle part of the central part is provided with a sunken positioning part, a vibrating permanent magnet 1 is fixed in the positioning part, and the shape and the size of the vibrating permanent magnet 1 are consistent with those of the positioning part. In the present embodiment, the shape of the permanent magnet 1 is rectangular, and the shape of the permanent magnet 1 is not limited to rectangular, circular, elliptical, or the like in practical use. The vibrating permanent magnet 1 plays a role in gathering the magnetic field generated by the stator system, improves the symmetry of the magnetic field, effectively reduces the leakage of the magnetic field, improves the distribution of the magnetic field, and effectively improves the utilization rate of the magnetic field, thereby improving the sensitivity of the bone conduction loudspeaker and reducing the distortion.
According to the bone conduction loudspeaker, the height of the permanent magnet in the Y-axis direction of the coil is reduced, the two permanent magnets with larger height are additionally arranged at the bottoms of the supports on two sides in the X-axis direction of the coil, and the two permanent magnets arranged in the X-axis direction of the coil are fixed below the side of the washer, so that the design structure of the permanent magnets can reduce the static magnetic field force, increase the effective utilization rate of the magnetic field, and reduce the probability that the vibrator collides with the stator, thereby increasing the sensitivity of the product and improving the performance of the product.
The proposed bone conduction speaker according to the present invention is described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the bone conduction speaker of the present invention as set forth above without departing from the spirit of the invention. Therefore, the scope of the present invention should be determined by the contents of the appended claims.
Claims (9)
1. A bone conduction loudspeaker comprises a vibration system and a stator system arranged in parallel with the vibration system, wherein the vibration system comprises a washer, and the stator system comprises a bracket, a coil and a stator permanent magnet which are fixed on the bracket, wherein the bracket comprises a bottom and side walls vertical to two sides of the bottom; it is characterized in that the preparation method is characterized in that,
the stator permanent magnet ring is arranged on the periphery of the coil and fixed at the bottom of the bracket, and the stator permanent magnet comprises a first permanent magnet and a second permanent magnet, wherein the first permanent magnet is arranged on two sides of the coil along the Y-axis direction, and the second permanent magnet is arranged on two sides of the coil along the X-axis direction; wherein,
the second permanent magnet is located below the washer, and the height of the second permanent magnet is greater than that of the first permanent magnet.
2. The bone conduction speaker of claim 1,
the first permanent magnet and the second permanent magnet are rectangular, circular or fan-shaped permanent magnets.
3. The bone conduction speaker of claim 1,
the first permanent magnet and the second permanent magnet are at least two.
4. The bone conduction speaker of claim 1,
the stator system further includes a circuit board; wherein,
the circuit board is conducted with the coil and is connected with the internal and external circuits of the bone conduction loudspeaker.
5. The bone conduction speaker of claim 4,
the support is a magnetic conduction support, wherein the circuit board is fixedly connected with the bottom of the support.
6. The bone conduction speaker of claim 1,
the washer comprises a raised central part and edge parts on two sides opposite to the central part; and,
the vibration system further comprises a vibrator permanent magnet and an elastic sheet which are arranged at the central part of the washer, the edge part of the washer is elastically connected with the support through the elastic sheet, and the elastic sheet suspends the vibration system above the stator system.
7. The bone conduction speaker of claim 6,
the elastic sheet comprises a fixing part combined with the bracket, a connecting part combined with the edge part of the washer and an elastic arm connecting the fixing part and the connecting part; wherein,
the spring plate is provided with two, the fixed parts of the two spring plates are fixed on the support, and the connecting parts of the two spring plates are fixed on the edge part of the washer.
8. The bone conduction speaker of claim 7,
the fixing part and the elastic arm are located in the same plane, the extending direction of the fixing part is perpendicular to the extending direction of the elastic arm, and the fixing part is fixed on the end face of the side wall of the support.
9. The bone conduction speaker of claim 6,
the edge part of the washer is provided with an extension part protruding out of the side edge of the central part, and the extension part extends towards the combined elastic sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610366834.3A CN105959885B (en) | 2016-05-26 | 2016-05-26 | Bone-conduction speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610366834.3A CN105959885B (en) | 2016-05-26 | 2016-05-26 | Bone-conduction speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105959885A CN105959885A (en) | 2016-09-21 |
| CN105959885B true CN105959885B (en) | 2018-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610366834.3A Active CN105959885B (en) | 2016-05-26 | 2016-05-26 | Bone-conduction speaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN105959885B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019041260A1 (en) * | 2017-08-31 | 2019-03-07 | 耿军 | Integrally designed bone conduction driver |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2886960Y (en) * | 2006-03-22 | 2007-04-04 | 陈奚平 | Bone conduction loudspeaker |
| CN1976540A (en) * | 2005-09-13 | 2007-06-06 | 金舞株式会社 | Bone conductive speaker |
| CN201226595Y (en) * | 2008-05-19 | 2009-04-22 | 北京开摩微电技术中心 | Moving magnetic type bone conduction audio transducer |
| WO2013084595A1 (en) * | 2011-12-06 | 2013-06-13 | 株式会社テムコジャパン | Mobile phone employing bone conduction device |
| CN203984669U (en) * | 2014-07-24 | 2014-12-03 | 歌尔声学股份有限公司 | Bone-conduction speaker |
| CN205123990U (en) * | 2015-11-19 | 2016-03-30 | 歌尔声学股份有限公司 | Bone conduction loudspeaker |
-
2016
- 2016-05-26 CN CN201610366834.3A patent/CN105959885B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1976540A (en) * | 2005-09-13 | 2007-06-06 | 金舞株式会社 | Bone conductive speaker |
| CN2886960Y (en) * | 2006-03-22 | 2007-04-04 | 陈奚平 | Bone conduction loudspeaker |
| CN201226595Y (en) * | 2008-05-19 | 2009-04-22 | 北京开摩微电技术中心 | Moving magnetic type bone conduction audio transducer |
| WO2013084595A1 (en) * | 2011-12-06 | 2013-06-13 | 株式会社テムコジャパン | Mobile phone employing bone conduction device |
| CN203984669U (en) * | 2014-07-24 | 2014-12-03 | 歌尔声学股份有限公司 | Bone-conduction speaker |
| CN205123990U (en) * | 2015-11-19 | 2016-03-30 | 歌尔声学股份有限公司 | Bone conduction loudspeaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105959885A (en) | 2016-09-21 |
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