CN213485157U - Bone conduction loudspeaker - Google Patents
Bone conduction loudspeaker Download PDFInfo
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- CN213485157U CN213485157U CN202022986985.3U CN202022986985U CN213485157U CN 213485157 U CN213485157 U CN 213485157U CN 202022986985 U CN202022986985 U CN 202022986985U CN 213485157 U CN213485157 U CN 213485157U
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- conduction
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- bone conduction
- conduction shell
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 49
- 239000000463 material Substances 0.000 claims abstract description 12
- 230000004308 accommodation Effects 0.000 claims abstract description 7
- 238000005452 bending Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 3
- 230000004044 response Effects 0.000 description 7
- 229910000859 α-Fe Inorganic materials 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012814 acoustic material Substances 0.000 description 2
- -1 aluminum iron boron Chemical compound 0.000 description 2
- 210000003027 ear inner Anatomy 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- WBWJXRJARNTNBL-UHFFFAOYSA-N [Fe].[Cr].[Co] Chemical compound [Fe].[Cr].[Co] WBWJXRJARNTNBL-UHFFFAOYSA-N 0.000 description 1
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 description 1
- 210000003477 cochlea Anatomy 0.000 description 1
- 210000000860 cochlear nerve Anatomy 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 210000002751 lymph Anatomy 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 210000002985 organ of corti Anatomy 0.000 description 1
- AJCDFVKYMIUXCR-UHFFFAOYSA-N oxobarium;oxo(oxoferriooxy)iron Chemical compound [Ba]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O AJCDFVKYMIUXCR-UHFFFAOYSA-N 0.000 description 1
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 210000003454 tympanic membrane Anatomy 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model discloses a bone conduction speaker, include the conduction shell, locate conduction shell one end and with the accuse sound piece that the conduction shell contacted and by the conduction shell with the accommodation space that accuse sound piece surrounded and form, the accommodation space has been acceptd and has been used for producing coil and the magnetic component in magnetic field, magnetic component, conduction shell and accuse sound piece form the magnetic circuit, just conduction shell and accuse sound piece are made by the electroacoustic material of different thickness respectively. The utility model discloses well magnetic component, conduction shell and sound control piece form the magnetic circuit, thereby constitute magnetic system, produce alternating magnetic field after the coil circular telegram, alternating magnetic field makes magnetic system's magnetic field intensity change, thereby make sound control piece and conduction shell vibration, and then let people respond to sound through bone conduction, and conduction shell and sound control piece are made by the material of different thickness respectively, utilize the relation of object vibration frequency and sound, can realize different high pitch, the mixture of medium pitch and/or bass, can satisfy the demand of user to different frequency channel sound.
Description
Technical Field
The utility model relates to an acoustics conversion technology field, more specifically relate to a bone conduction speaker.
Background
Bone conduction is a sound conduction mode, namely, the sound is converted into mechanical vibration with different frequencies, sound waves are transmitted through the skull, the bone labyrinth, the lymph transmission of the inner ear, the spiral organ, the auditory nerve and the auditory center of a person, compared with the classical sound conduction mode of generating the sound waves through the vibrating diaphragm, the bone conduction omits a plurality of sound wave transmission steps, clear sound restoration can be realized in a noisy environment, and the sound waves can not influence other people due to diffusion in the air.
The bone conduction speaker is a novel electroacoustic conversion device developed based on the sound conduction mode of bone conduction, and can convert an electric signal into a mechanical vibration signal, and transmit the vibration signal into a cochlea through human tissues and bones, so that a user can hear sound, and the eardrum of people can not be damaged due to clear bone conduction sound without being influenced by the external environment, and therefore the bone conduction speaker is widely applied to the fields of earphones and the like. However, most of the sounds transmitted by the conventional bone conduction vibration speaker are low-frequency sounds, and the frequencies of the transmitted sounds are single, so that the pursuit of users for sounds in other different frequency bands cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a bone conduction speaker that can realize the sound mixture of different frequency channels and present is provided.
For solving the technical problem, the utility model provides a bone conduction speaker, include the conduction shell, locate conduction shell one end and with the accuse sound piece that the conduction shell contacted and by the accommodation space that conduction shell and accuse sound piece surrounded and form, accommodation space accepts coil and the magnetic component who is used for producing magnetic field, magnetic component, conduction shell and accuse sound piece form the magnetic circuit, just conduction shell and accuse sound piece are made by the electroacoustic material of different thickness respectively.
The further technical scheme is as follows: the thickness of the conductive shell is 0.15-0.5 mm.
The further technical scheme is as follows: the thickness of the sound control sheet is 0.8-1.4 mm.
The further technical scheme is as follows: the magnetic assembly comprises a first magnet and a second magnet which are respectively arranged on two sides of the coil.
The further technical scheme is as follows: the bone conduction speaker further comprises a conduction bracket positioned at the bottom of the conduction shell, the coil is positioned on the conduction bracket, and the magnetic component is positioned on the conduction shell.
The further technical scheme is as follows: the thickness of the conduction support is 0.4-0.8 mm.
The further technical scheme is as follows: the conduction shell comprises a first top plate, two first supporting plates and second supporting plates, wherein the two first supporting plates are formed by downwards extending from two opposite sides of the first top plate, the second supporting plates are formed by inwards bending the bottom ends of the two first supporting plates respectively, a rectangular groove is formed in the first top plate, the sound control piece corresponds to the rectangular groove and is connected to the first top plate, and the conduction support is attached to the bottom of the second supporting plate.
The further technical scheme is as follows: accuse sound piece is "ten" style of calligraphy, including being located the diaphragm of rectangular channel top and the riser of being connected with the diaphragm, riser both ends butt is fixed in first roof top surface.
The further technical scheme is as follows: the length and the width of the transverse plate are smaller than those of the rectangular groove.
The further technical scheme is as follows: the coil is sleeved on the guide post so as to be fixed on the conduction bracket through the guide post.
Compared with the prior art, the coil and the magnetic component for generating the magnetic field in the utility model are accommodated in the accommodating space surrounded by the conduction shell and the sound control sheet, the magnetic component, the conduction shell and the sound control sheet form a magnetic loop, thereby forming a magnetic system, the coil generates an alternating magnetic field after being electrified, the alternating magnetic field changes the magnetic field intensity of the magnetic system formed by the magnetic component, the conduction shell and the sound control sheet, thereby leading the sound control sheet and the conduction shell to vibrate, leading the end surfaces of the sound control sheet and the conduction shell to be in direct contact with the human body to transmit the sound to the human bone, thereby inducing the human body to sense the sound through the bone conduction, and the conduction shell and the sound control sheet in the utility model are respectively made of materials with different thicknesses, the thickness of the conductive shell is different from that of the sound control sheet, and the mixing of different high pitch, middle pitch and/or low pitch can be realized by utilizing the relation between the vibration frequency of the object and the sound, so that the requirements of users on the sound of different frequency bands can be met.
Drawings
Fig. 1 is a schematic perspective view of a bone conduction speaker according to an embodiment of the present invention.
Fig. 2 is a schematic top view of the bone conduction speaker of fig. 1.
Fig. 3 is a schematic cross-sectional view of the bone conduction speaker of fig. 1.
Fig. 4 is a schematic diagram of the frequency response curve of the bone conduction speaker of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention will be further described with reference to the accompanying drawings and examples.
Referring to fig. 1 to 3, fig. 1 to 3 show a specific embodiment of the bone conduction speaker 1 of the present invention. In the embodiment shown in the drawings, the bone conduction speaker 1 includes a conductive shell 20, a sound control plate 10 disposed at one end of the conductive shell 20 and contacting the conductive shell 20, and a receiving space 70 surrounded by the conductive shell 20 and the sound control plate 10, wherein the receiving space 70 receives a coil 30 and a magnetic component for generating a magnetic field, the magnetic component forms a magnetic circuit with the conductive shell 20 and the sound control plate 10, and the conductive shell 20 and the sound control plate 10 are made of electro-acoustic materials with different thicknesses, respectively, the electro-acoustic materials include silicon steel plates, ferrite, iron, or the like. The utility model discloses well magnetic component, conduction shell 20 and accuse sound piece 10 form the magnetic circuit, thereby constitute magnetic system, coil 30 produces alternating magnetic field after the circular telegram, this alternating magnetic field makes magnetic component, the magnetic field intensity that conduction shell 20 and accuse sound piece 10 are constituteed changes, even make the magnetic field force that conduction shell 20 and accuse sound piece 10 received change, the change of this kind of atress makes accuse sound piece 10 and conduction shell 20 produce the vibration, because of the thickness difference of accuse sound piece 10 and conduction shell 20, the electroacoustic material of different thickness, utilize the relation of object vibration frequency and sound, vibrate respectively and produce high, in, the bass, then in this embodiment, accuse sound piece 10 and conduction shell 20 produce the vibration of different amplitudes, thereby make bone conduction speaker 1 can realize different treble, the mixture of multiple tone qualities such as well sound and/or bass appear for the user.
Preferably, in the present invention, the thickness of the conductive shell 20 is 0.15-0.5mm, and the thickness of the sound-controlling piece 10 is 0.8-1.4 mm. In the embodiment, the two electroacoustic materials with different thicknesses can be connected together through laser welding, and the magnetic field generates different frequency band vibration on the materials with different thicknesses, so that the requirements of users on different frequency band sounds are met.
In some embodiments, the bone conduction speaker 1 further comprises a conductive support 50 located at the bottom of the conductive housing 20, the coil 30 is located on the conductive support 50, and the magnetic assembly is located on the conductive housing 20. And the thickness of the conductive support 50 is 0.4-0.8 mm. Further, in this embodiment, a guide post 60 is disposed at the middle of the conducting bracket 50, and the coil 30 is sleeved on the guide post 60 to be fixed on the conducting bracket 50 through the guide post 60. The utility model discloses it is gapped between well guide pillar 60 and the conduction shell 20 lateral wall, guide pillar 60 are used for the magnetic conduction to form the magnetic field of perpendicular to conduction support 50 bottom, the effect of magnetic conduction can be played equally to the conduction shell 20 lateral wall.
In the embodiment shown in the drawings, the magnetic assembly comprises a first magnet 401 and a second magnet 402 respectively disposed on two sides of the coil 30, and the present invention adopts a dual-magnet driving, so that the electro-acoustic is converted into mechanical vibration, and the conversion efficiency is high. Specifically, in this embodiment, the first magnet 401 and the second magnet 402 are symmetrically disposed on the conductive bracket 50 with the guide post 60 as the center to form a uniform magnetic field, so that the sensitivity is high, the self-consumption of audio transmission can be reduced as much as possible, and the electromagnetic coupling between the two magnets and the coil can be ensured, thereby improving the sound quality of the bone conduction speaker 1. The first magnet 401 and the second magnet 402 may be magnets made of alloy permanent magnet materials including but not limited to neodymium iron boron, samarium cobalt, alnico, iron chromium cobalt, aluminum iron boron, and iron carbon aluminum or ferrite permanent magnet materials including but not limited to barium ferrite, iron ferrite, manganese ferrite, and lithium manganese ferrite. Understandably, the utility model discloses in, magnetic component is not restricted to including 2 magnets, can also be even number pieces such as 4, 6 or 8, as long as form even strong magnetic field can.
In this embodiment, the conductive shell 20 includes a first top plate 201, two first supporting plates 202 extending downward from two opposite sides of the first top plate 201, and second supporting plates 203 bent inward from bottom ends of the two first supporting plates 202, the first magnet 401 and the second magnet 402 are respectively located on the two second supporting plates 203, the first top plate 201 is provided with a rectangular groove 204, the sound-controlling piece 10 is connected to the first top plate 201 corresponding to the rectangular groove 204, and the conductive bracket 50 is attached to bottoms of the two second supporting plates 203.
In some embodiments, the sound-controlling sheet 10 is in a cross shape, and includes a horizontal plate 101 located above the rectangular groove 204 and a vertical plate 102 connected to the horizontal plate 101, two ends of the vertical plate 102 are fixed to the top surface of the first top plate 201 in an abutting manner, two ends of the vertical plate 102 are welded to the top surface of the first top plate 201 by laser, and are overlapped with the first top plate 201, and a magnetic field can obtain a middle sound through the overlapped part of two materials with different thicknesses. Preferably, the size of sound control piece 10 is less than the size of rectangular groove 204, that is, the length and the width of horizontal plate 101 are less than the length and the width of rectangular groove 204, sound distribution groove 80 is formed between the periphery of the bottom of horizontal plate 101 and the wall of rectangular groove 204, that is, a gap is left between the periphery of the bottom of horizontal plate 101 and rectangular groove 204, so that the space between conductive shell 20 and sound control piece 10 is not sealed, sound mixing is avoided, and sound output effect can be improved.
Fig. 4 is the frequency response curve diagram of the bone conduction speaker of the present invention, the solid line in the diagram is the frequency response curve of the bone conduction speaker in the prior art, and the dotted line is the frequency response curve of the bone conduction speaker of the present invention. Known by the figure, the frequency response that prior art's bone conduction speaker actually produced is precipitous, and tone quality is relatively poor, and the utility model discloses the frequency response of the audio signal after the vibration produces among the bone conduction speaker is mixed high, well, low audio frequency is more flat, and sound is more broad, has widened the resonance response scope simultaneously, and tone quality is better, and can know by the figure, and is the same at the frequency, the utility model discloses the sound pressure level value (sound size) of bone conduction speaker is greater than prior art bone conduction speaker, then the utility model discloses bone conduction speaker's sensitivity is higher.
To sum up, the coil and the magnetic component for generating magnetic field in the utility model are accommodated in the accommodation space surrounded by the conduction shell and the sound control sheet, the magnetic component, the conduction shell and the sound control sheet form a magnetic loop, thereby forming a magnetic system, the first magnet and the second magnet in the magnetic component form a uniform magnetic field, the coil generates an alternating magnetic field after being electrified, the conduction shell and the sound control sheet receive the common effect of the two magnetic fields, the alternating magnetic field can change the magnetic field strength of the magnetic system formed by the magnetic component, the conduction shell and the sound control sheet, thereby causing the conduction shell and the sound control sheet to generate vibration, when a wearer uses, the first top plate of the sound control sheet and the conduction shell directly contacts with the human body, the vibration is transmitted to the ear part through the bone of the wearer, thereby the person can sense the sound, and the conduction shell and the sound control sheet are respectively made of materials with different thicknesses, the thickness of the conductive shell is different from that of the sound control sheet, and the mixing of different high pitch, middle pitch and/or low pitch can be realized by utilizing the relation between the vibration frequency of the object and the sound, so that the requirements of users on the sound of different frequency bands can be met.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is not intended to limit the invention in any way. Various equivalent changes and modifications can be made on the basis of the above embodiments by those skilled in the art, and all equivalent changes and modifications within the scope of the claims should fall within the protection scope of the present invention.
Claims (10)
1. A bone conduction speaker, characterized by: bone conduction speaker includes the conduction shell, locates conduction shell one end and the accommodation space who surrounds the formation with the accuse sound piece that conduction shell contacted and by conduction shell and accuse sound piece, accommodation space accepts coil and the magnetic component who is used for producing the magnetic field, magnetic component, conduction shell and accuse sound piece form the magnetic circuit, just conduction shell and accuse sound piece are made by the electroacoustic material of different thickness respectively.
2. The bone conduction speaker of claim 1, wherein: the thickness of the conductive shell is 0.15-0.5 mm.
3. The bone conduction speaker of claim 1, wherein: the thickness of the sound control sheet is 0.8-1.4 mm.
4. The bone conduction speaker of claim 1, wherein: the magnetic assembly comprises a first magnet and a second magnet which are respectively arranged on two sides of the coil.
5. The bone conduction speaker of claim 1, wherein: the bone conduction speaker further comprises a conduction bracket positioned at the bottom of the conduction shell, the coil is positioned on the conduction bracket, and the magnetic component is positioned on the conduction shell.
6. The bone conduction speaker of claim 5, wherein: the thickness of the conduction support is 0.4-0.8 mm.
7. The bone conduction speaker of claim 5, wherein: the conduction shell comprises a first top plate, two first supporting plates and second supporting plates, wherein the two first supporting plates are formed by downwards extending from two opposite sides of the first top plate, the second supporting plates are formed by inwards bending the bottom ends of the two first supporting plates respectively, a rectangular groove is formed in the first top plate, the sound control piece corresponds to the rectangular groove and is connected to the first top plate, and the conduction support is attached to the bottom of the second supporting plate.
8. The bone conduction speaker of claim 7, wherein: accuse sound piece is "ten" style of calligraphy, including being located the diaphragm of rectangular channel top and the riser of being connected with the diaphragm, riser both ends butt is fixed in first roof top surface.
9. The bone conduction speaker of claim 8, wherein: the length and the width of the transverse plate are smaller than those of the rectangular groove.
10. The bone conduction speaker of claim 5, wherein: the coil is sleeved on the guide post so as to be fixed on the conduction bracket through the guide post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022986985.3U CN213485157U (en) | 2020-12-10 | 2020-12-10 | Bone conduction loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022986985.3U CN213485157U (en) | 2020-12-10 | 2020-12-10 | Bone conduction loudspeaker |
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| Publication Number | Publication Date |
|---|---|
| CN213485157U true CN213485157U (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022986985.3U Active CN213485157U (en) | 2020-12-10 | 2020-12-10 | Bone conduction loudspeaker |
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| CN (1) | CN213485157U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112468942A (en) * | 2020-12-10 | 2021-03-09 | 深圳市誉源通科技有限公司 | Bone conduction loudspeaker |
-
2020
- 2020-12-10 CN CN202022986985.3U patent/CN213485157U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112468942A (en) * | 2020-12-10 | 2021-03-09 | 深圳市誉源通科技有限公司 | Bone conduction loudspeaker |
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