CN111601223A - Electromagnetic type bone conduction vibration pickup transducer - Google Patents
Electromagnetic type bone conduction vibration pickup transducer Download PDFInfo
- Publication number
- CN111601223A CN111601223A CN202010672600.8A CN202010672600A CN111601223A CN 111601223 A CN111601223 A CN 111601223A CN 202010672600 A CN202010672600 A CN 202010672600A CN 111601223 A CN111601223 A CN 111601223A
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- China
- Prior art keywords
- coil
- magnet
- bone conduction
- suspension
- conduction vibration
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
- H04R25/604—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/13—Hearing devices using bone conduction transducers
Abstract
The invention provides an electromagnetic bone conduction vibration pickup transducer which comprises a shell, a magnet, a coil and a suspension, wherein the coil is arranged in the shell, the magnet is coaxially arranged at the center of the coil, the suspension is symmetrically arranged at two ends of the magnet, and the coil can respond to the suspension and the vibration of the magnet to generate induced electromotive force. The electromagnetic bone conduction vibration pickup device can pick up external vibration through the suspended magnet to generate self vibration, the vibrating magnet can enable the magnetic flux passing through the coil to generate corresponding change, and then the coil can generate induced electromotive force to output so as to complete the conversion from a vibration signal to an electric signal; meanwhile, the double-suspension design can reduce the influence of air conduction noise, reduce the distortion of a converted signal and improve the bone conduction output definition.
Description
Technical Field
The invention relates to the technical field of hearing aids, in particular to an electromagnetic bone conduction vibration pickup transducer.
Background
The modes of external sound transmission into the inner ear of human body include air conduction and bone conduction. The air conduction means that sound is transmitted to the inner ear through the outer ear and the middle ear, and the bone conduction means that sound is directly transmitted to the inner ear through the vibration of the skull. Normally, the external sound received by the inner ear of the human body is completed by two modes of air conduction and bone conduction. However, when the external sound is noisy, the noise interference is large, and the inner ear of the human body is damaged, that is, when the human body cannot receive the external sound well through the air conduction method, the bone conduction method is emphasized by people, and a bone conduction technology is gradually developed.
By bone conduction technology, it is meant that the vibration signal is converted into an electrical signal by picking up the vibration receiver. Specifically, the bone conduction technology is to attach a pickup vibration receiver to the head or neck of a human body, and utilizes the slight vibration of the head and neck bone caused by the speaking of the human body to collect and convert sound signals into electric signals and output the electric signals. Bone conduction technology does not require air as a sound transmission medium, so that high-definition sound output can still be realized in a strong noise environment.
Current pickup vibration receivers generally include three categories: electromagnetic, electrostatic, and piezoelectric. The electromagnetic pickup vibration receiver generally fixes a magnet and an induction coil, and a magnetic conductive reed is used for sensing and picking up external vibration, so that magnetic flux passing through the magnetic conductive reed generates corresponding change, and the induction coil generates induced electromotive force. However, the structure of the electromagnetic pickup vibration receiver has the defect that the signal distortion is difficult to control.
Disclosure of Invention
To solve the above technical problems, an object of the present invention is to provide an electromagnetic bone conduction vibration pickup transducer capable of reducing signal distortion.
In order to achieve the above object, the present invention provides an electromagnetic bone conduction vibration pickup transducer, including a housing, a magnet, a coil, and a suspension, wherein the coil is disposed in the housing, the magnet is coaxially disposed at the center of the coil, the suspension is symmetrically disposed at both ends of the magnet, and the coil can generate an induced electromotive force in response to the suspension and the vibration of the magnet.
The invention sets magnet coaxially in the center of the coil in the shell and sets suspension symmetrically at two ends of the magnet, so that the coil can respond to the suspension vibration to generate induced electromotive force, namely, the slight vibration of head and neck bones caused by speaking can make the shell tightly attached to the head and neck vibrate, the vibrating shell can push the air pressure in the shell and make the suspension drive the magnet to vibrate, and the vibrating magnet can make the coil wound outside the magnet generate induced electromotive force due to the change of magnetic flux; meanwhile, the symmetrical double suspensions have opposite acting forces influenced by the air conduction noise, so that the influence of the air conduction noise on the magnet can be minimized, the distortion of converting a vibration signal into an electric signal can be reduced, and the bone conduction output definition can be improved.
As a further improvement of the invention, the coil is arranged coaxially with the housing, i.e. the central axis of the coil coincides with the central axis of the housing, which further improves the bone conduction output resolution.
As a further improvement of the present invention, the suspension includes a fixing portion fixed to the housing, a connecting portion fixed to the magnet, and a transition portion having both ends connected to the fixing portion and the connecting portion, respectively, that is, both ends of the magnet may be mounted in the housing by a suspension having elasticity, so that the magnet may vibrate according to the vibration of the suspension, and thus the magnetic flux of the coil may be changed.
As a further improvement of the invention, the transition part is provided as an annular body, i.e. the outer edge of the annular body is connected with the fixing part, and the inner edge of the annular body is connected with the connecting part.
As a further improvement of the invention, the transition part is provided with a connecting body comprising a plurality of annular arrays, namely one end of the connecting body is connected with the fixed part, and the other end of the connecting body is connected with the connecting part.
As a further improvement of the invention, the connecting body is provided in the form of a strip.
As a further improvement of the invention, the connecting body is arranged in a fan shape.
As a further improvement of the present invention, the electromagnetic induction coil further comprises an output terminal fixed in the housing, and the output terminal can be connected with the coil, so that the induced electromotive force generated by the coil can be finally output through the output terminal.
As a further improvement of the present invention, the bone conduction vibration pickup further comprises a bracket fixed in the housing, and the coil is fixed on the bracket, so that the structure of the bone conduction vibration pickup is more stable.
Compared with the prior art, the invention has the beneficial effects that: the center of the coil in the shell is coaxially provided with the magnet, and the two ends of the magnet are symmetrically provided with the suspension, so that the coil can respond to the suspension and the vibration of the magnet to generate induced electromotive force, namely the suspended magnet can pick up external vibration to generate self vibration, the vibrating magnet can correspondingly change the magnetic flux passing through the coil, and then the coil can generate induced electromotive force to output, and the conversion from a vibration signal to an electric signal is completed; meanwhile, the double-suspension design can reduce the influence of air conduction noise, reduce the distortion of a converted signal and improve the bone conduction output definition.
Drawings
Fig. 1 is a schematic structural diagram of an electromagnetic bone conduction vibration pickup transducer according to a first embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a suspension according to a first embodiment of the invention;
FIG. 3 is a top view of a suspension according to a second embodiment of the invention;
FIG. 4 is a top view of a suspension according to a third embodiment of the present invention;
fig. 5 is a top view of a suspension according to a fourth embodiment of the invention.
Description of the main element symbols:
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1 | |
2 |
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3 | |
4 |
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5 | |
6 |
| Fixing |
41 | Connecting |
42 |
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43 | Connecting |
431 |
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention provides an electromagnetic bone conduction vibration pickup transducer which can acquire sounds with small distortion and high definition in a bone conduction mode when a human body cannot clearly receive the external sounds in a gas conduction mode, for example, the external sounds are noisy, the noise interference is large or the hearing is obstructed.
Specifically, the electromagnetic bone conduction vibration pickup transducer provided by the invention can pick up external vibration through the suspended magnet to generate self vibration, the vibrating magnet can correspondingly change the magnetic flux passing through the coil, and then the coil can generate induced electromotive force to output, so that the conversion from a vibration signal to an electric signal is completed. When the electromagnetic bone conduction vibration pickup device is applied specifically, the electromagnetic bone conduction vibration pickup device can be tightly attached to the head or the neck of a human body, and the head or the neck bone can slightly vibrate when a person speaks, so that the electromagnetic bone conduction vibration pickup device can vibrate along with the head or the neck bone and generate induced electromotive force.
The first embodiment is as follows:
referring to fig. 1 and 2, a structural schematic view of an electromagnetic bone conduction vibration pickup according to a first embodiment of the present invention is shown. As can be seen from the figure, the electromagnetic bone conduction vibration pickup in this embodiment includes a housing 1, a magnet 2, a coil 3, a suspension 4, a bracket 5, and an output terminal 6, wherein the magnet 2, the coil 3, the suspension 4, the bracket 5, and the output terminal 6 are all disposed in the housing 1.
Specifically, the coil 3 is an induction coil which is disposed coaxially with the housing 1, that is, the central axis of the coil 3 coincides with the central axis of the housing 1. Of course, on the premise of ensuring the definition of bone conduction output, the coil 3 in some embodiments may be arranged non-coaxially with the housing 1, and in the actual application process, the coaxial or non-coaxial arrangement may be made according to different application occasions.
Further, the coil 3 may be fixedly mounted in the housing 1 by means of a holder 5, i.e. the holder 5 is fixedly mounted in the housing 1 and the coil 3 is fixedly mounted on the holder 5. In this embodiment, fig. 1 only provides a schematic structural diagram of the housing 1 and the support 5 in the electromagnetic bone conduction vibration pickup transducer, and as for specific structures and shapes of the housing 1 and the support 5, and specific fixing manners of the support 5 and the housing 1, and the coil 3 and the support 5, no specific limitation is made herein, that is, specific fixing requirements and deformation can be made as required in an actual application process on the premise of ensuring definition of bone conduction output.
Further, the magnet 2 is coaxially arranged at the center of the coil 3, that is, the central axis of the magnet 2 is consistent with the central axis of the coil 3 and also consistent with the central axis of the shell 1, so that the balance of magnetic flux penetrating through the coil 3 can be ensured, the coil 3 can generate stable induced electromotive force output, the distortion of a converted signal can be reduced, and the bone conduction output definition can be improved.
Further, the suspensions 4 are symmetrically provided at both ends of the magnet 2, so that both ends of the magnet 2 can be elastically supported in the housing 1 by the symmetrically provided suspensions 4. Specifically, one end of the suspension 4 can be fixedly arranged on the shell 1, and the other end of the suspension 4 can be fixedly connected with one end of the magnet 2, so that the magnet 2 can vibrate along the central axis of the coil 4 under the driving of the two symmetrically arranged suspensions 4, when the shell 1 which is tightly attached to the head or the neck of a human body vibrates along with the slight vibration of the head or the neck bone, the vibrating shell 1 further pushes the air pressure in the shell 1 and the suspension 4 drives the magnet 2 to vibrate, and the vibrating magnet 2 further can enable the coil 3 arranged outside the magnet 2 to generate induced electromotive force output due to the change of magnetic flux, thereby completing the conversion from a vibration signal to an electric signal; simultaneously, because of two suspensions 4 that the symmetry set up can make magnet 2 receive the effort symmetry of air conduction noise influence opposite, just so can make magnet 2 receive the influence minimum of air conduction noise to can reduce vibration signal conversion and become the distortion factor of signal of telecommunication, improve bone conduction output definition.
Further, the suspension 4 may include a fixing portion 41, a connecting portion 42, and a transition portion 43. The fixing portion 41 is fixedly connected to the housing 1, the connecting portion 42 is fixedly connected to one end of the magnet 2, and two ends of the transition portion 43 are fixedly connected to the fixing portion 41 and the connecting portion 42, respectively. In the present embodiment, fig. 2 only provides a schematic cross-sectional view of the suspension 4 in the electromagnetic bone conduction vibration pickup transducer, and as for the specific structure and shape of the suspension 4 and the specific fixing manner of the suspension 4 with the housing 1 and the magnet 2, no specific limitation is made herein, as long as it is ensured that the two symmetrically arranged suspensions 4 can elastically support the magnet 2 in the housing 1 and can make the magnet 2 vibrate along the central axis of the coil 3, and the specific fixing requirements and deformation can be made according to the needs in the practical application process.
Further, the output terminal 6 is also fixedly mounted on the bracket 5, and the output terminal 6 is connectable to the coil 3 to output an electric signal. Of course, the output terminal 6 may also be fixedly installed at other positions in the housing 1, as long as the induced electromotive force generated by the coil 3 can be ensured to be normally output, and the output terminal can be correspondingly set according to the structure, shape and mutual position relationship of the housing 1, the bracket 5, the suspension 4 and the coil 3 in the practical application process.
In the first embodiment of the present invention, the materials of the housing 1, the magnet 2, the coil 3, the suspension 4, the bracket 5, and the output terminal 6 are not specifically required, and conventional designs may be adopted, for example, the housing 1 is made of a non-magnetic material, the magnet 2 is made of a permanent magnet, and the bracket 5 is made of a heat-resistant, non-magnetic, and rigid polymer material. In the practical application process, different existing materials can be adopted according to different application occasions, or novel materials capable of realizing the functions of all parts are adopted.
It should be further noted that, on the premise of ensuring the structural stability and the functional realization, the bracket 5 may not be disposed in the housing 1 in some embodiments, so that the structure of the whole electromagnetic bone conduction vibration pickup is simplified, the volume is smaller, and the assembly and adjustment difficulty is lower. In addition, on the premise of ensuring the normal output of the induced electromotive force generated by the coil 3, in some embodiments, the output terminal 6 may be disposed outside the housing 1, so as to further simplify the structure of the entire electromagnetic bone conduction vibration pickup and simplify the assembly.
Example two:
referring to fig. 3, a top view of a suspension according to a second embodiment of the present invention is shown. The suspension 4 in this embodiment also includes a fixed portion 41, a connecting portion 42, and a transition portion 43. Wherein, the fixed part 41 is fixed on the housing 1, the connecting part 42 is fixed on the magnet 2, and two ends of the transition part 43 are respectively fixedly connected with the fixed part 41 and the connecting part 42. More specifically, the transition portion 43 is provided as an annular body, an outer edge of which may be connected with the fixing portion 41, and an inner edge of which may be connected with the connecting portion 42. Since the suspension 4 itself is required to elastically support the magnet 2, the ring body itself is required to have elasticity, that is, the ring body is required to be made of a material having elasticity.
In addition, in some embodiments, a plurality of through holes may be formed in the ring body to make the vibration sensing performance of the suspension 4 more sensitive.
Example three:
referring to fig. 4, a top view of a suspension according to a third embodiment of the present invention is shown. The present embodiment is different from the second embodiment in that: the transition 43 in the suspension 4 is arranged to comprise a number of annular arrays of connecting bodies 431. Specifically, the transition portion 43 in the present embodiment includes 3 annular arrays of bar-shaped connecting bodies 431, and one end of the bar-shaped connecting body 431 is connected to the fixing portion 41 and the other end is connected to the connecting portion 42. Similarly, since the suspension 4 itself is required to elastically support the magnet 2, the bar-shaped connecting body 431 is also required to be made of an elastic material.
Example four:
referring to fig. 5, a top view of a suspension according to a fourth embodiment of the present invention is shown. The present embodiment is different from the third embodiment in that: the transition portion 43 on the suspension 4 comprises 2 annular arrays of fan-shaped connecting bodies 431, one end of which is connected to the fixed portion 41 and the other end is connected to the connecting portion 42. Similarly, since the suspension 4 itself is required to elastically support the magnet 2, the fan-shaped connecting body 431 is also required to be made of an elastic material.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. An electromagnetic type bone conduction vibration pickup transducer, characterized in that: the coil is arranged in the shell, the magnet is coaxially arranged in the center of the coil, the suspensions are symmetrically arranged at two ends of the magnet, and the coil can respond to the suspensions and the vibration of the magnet to generate induced electromotive force.
2. An electromagnetic bone conduction vibration pick-up transducer according to claim 1, wherein: the coil is arranged coaxially with the housing.
3. An electromagnetic bone conduction vibration pick-up transducer according to claim 2, wherein: the suspension comprises a fixing part, a connecting part and a transition part, the fixing part is fixed on the shell, the connecting part is fixed on the magnet, and two ends of the transition part are respectively connected with the fixing part and the connecting part.
4. An electromagnetic bone conduction vibration pick-up transducer according to claim 3, wherein: the transition part is arranged as an annular body.
5. An electromagnetic bone conduction vibration pick-up transducer according to claim 3, wherein: the transition portion is provided as a connecting body including a plurality of annular arrays.
6. An electromagnetic bone conduction vibration pick-up transducer according to claim 5, wherein: the connecting body is arranged in a strip shape.
7. An electromagnetic bone conduction vibration pick-up transducer according to claim 5, wherein: the connecting body is fan-shaped.
8. An electromagnetic bone conduction vibration pick-up transducer according to claim 1 or 2, characterized in that: the coil is fixed in the shell, and the coil is connected with the output terminal.
9. An electromagnetic bone conduction vibration pick-up transducer according to claim 2, wherein: the coil is fixed on the bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010672600.8A CN111601223A (en) | 2020-07-14 | 2020-07-14 | Electromagnetic type bone conduction vibration pickup transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010672600.8A CN111601223A (en) | 2020-07-14 | 2020-07-14 | Electromagnetic type bone conduction vibration pickup transducer |
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| Publication Number | Publication Date |
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| CN111601223A true CN111601223A (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010672600.8A Pending CN111601223A (en) | 2020-07-14 | 2020-07-14 | Electromagnetic type bone conduction vibration pickup transducer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111935611A (en) * | 2020-09-29 | 2020-11-13 | 江西联创宏声电子股份有限公司 | Contact type telephone transmitter |
| CN114563113A (en) * | 2022-03-03 | 2022-05-31 | 中国工程物理研究院总体工程研究所 | Hollow resonant stress assembly and stress meter |
| WO2024021380A1 (en) * | 2022-07-25 | 2024-02-01 | 深圳市韶音科技有限公司 | Transducer device, speaker and acoustic output device |
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| CN1759632A (en) * | 2003-03-11 | 2006-04-12 | 株式会社坦姆科日本 | Bone conduction device |
| JP5146147B2 (en) * | 2008-06-25 | 2013-02-20 | コスモギア株式会社 | Bone conduction microphone / speaker communication device |
| US20140185822A1 (en) * | 2012-12-28 | 2014-07-03 | Panasonic Corporation | Bone conduction speaker and bone conduction headphone device |
| CN105142087A (en) * | 2015-08-13 | 2015-12-09 | 艺尔康听力科技（上海）有限公司 | In-vivo implanted ossiphone vibrating device |
| CN205105394U (en) * | 2015-10-26 | 2016-03-23 | 胡强 | Double -ring formula osteoacusis sensor |
| CN105472511A (en) * | 2014-12-01 | 2016-04-06 | 深圳市韶音科技有限公司 | Dual-positioning type bone conduction loudspeaker device |
| CN205754846U (en) * | 2016-01-30 | 2016-11-30 | 陈广标 | A kind of bone-conduction device of hollow shell fragment |
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2020
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1759632A (en) * | 2003-03-11 | 2006-04-12 | 株式会社坦姆科日本 | Bone conduction device |
| JP5146147B2 (en) * | 2008-06-25 | 2013-02-20 | コスモギア株式会社 | Bone conduction microphone / speaker communication device |
| US20140185822A1 (en) * | 2012-12-28 | 2014-07-03 | Panasonic Corporation | Bone conduction speaker and bone conduction headphone device |
| CN105472511A (en) * | 2014-12-01 | 2016-04-06 | 深圳市韶音科技有限公司 | Dual-positioning type bone conduction loudspeaker device |
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| CN205754846U (en) * | 2016-01-30 | 2016-11-30 | 陈广标 | A kind of bone-conduction device of hollow shell fragment |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111935611A (en) * | 2020-09-29 | 2020-11-13 | 江西联创宏声电子股份有限公司 | Contact type telephone transmitter |
| CN111935611B (en) * | 2020-09-29 | 2022-04-05 | 江西联创宏声电子股份有限公司 | Contact type telephone transmitter |
| CN114563113A (en) * | 2022-03-03 | 2022-05-31 | 中国工程物理研究院总体工程研究所 | Hollow resonant stress assembly and stress meter |
| CN114563113B (en) * | 2022-03-03 | 2023-11-21 | 中国工程物理研究院总体工程研究所 | Hollow resonance type stress assembly and stress meter |
| WO2024021380A1 (en) * | 2022-07-25 | 2024-02-01 | 深圳市韶音科技有限公司 | Transducer device, speaker and acoustic output device |
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Application publication date: 20200828 |