CN113286236A - Two frequency-dividing piezoelectric bone conduction hearing device - Google Patents
Two frequency-dividing piezoelectric bone conduction hearing device Download PDFInfo
- Publication number
- CN113286236A CN113286236A CN202110568793.7A CN202110568793A CN113286236A CN 113286236 A CN113286236 A CN 113286236A CN 202110568793 A CN202110568793 A CN 202110568793A CN 113286236 A CN113286236 A CN 113286236A
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- China
- Prior art keywords
- piezoelectric
- frequency
- hearing device
- conduction hearing
- piezoelectric vibrator
- Prior art date
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 20
- 239000007787 solid Substances 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims 2
- 230000005236 sound signal Effects 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 10
- 210000003625 skull Anatomy 0.000 description 5
- 208000032041 Hearing impaired Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 210000003477 cochlea Anatomy 0.000 description 1
- 210000003027 ear inner Anatomy 0.000 description 1
- 210000002768 hair cell Anatomy 0.000 description 1
- 230000005237 high-frequency sound signal Effects 0.000 description 1
- 230000005238 low-frequency sound signal Effects 0.000 description 1
- 210000002751 lymph Anatomy 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
Images
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
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/005—Piezoelectric transducers; Electrostrictive transducers using a piezoelectric polymer
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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
- H04R25/48—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using constructional means for obtaining a desired frequency response
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
- H04R2225/77—Design aspects, e.g. CAD, of hearing aid tips, moulds or housings
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2410/00—Microphones
- H04R2410/03—Reduction of intrinsic noise in microphones
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Neurosurgery (AREA)
- Otolaryngology (AREA)
- Headphones And Earphones (AREA)
Abstract
The invention relates to a dichotomous piezoelectric bone conduction hearing aid which mainly comprises an upper cover, a lower cover, a rectangular piezoelectric vibrator fixedly supported in the middle, an elastically supported circular piezoelectric vibrator, a supporting column, a conduction frame, a spring, a circular sheet spring and the like. The novel characteristics of the invention are: the two piezoelectric vibrators are used for transmitting sound within the hearing threshold range of a person, and the first-order resonant frequency of the low-frequency piezoelectric vibrator is further reduced, the first-order resonant frequency of the high-frequency piezoelectric vibrator is improved, and the response frequency domain of the sound is wider by reasonably distributing the response frequencies of the different piezoelectric vibrators. Meanwhile, the device adopts a mode of alternately placing the circular and rectangular piezoelectric vibrators, and does not need to punch the piezoelectric element structurally, so that the piezoelectric element is not damaged.
Description
Technical Field
The invention relates to a novel bone conduction hearing device with piezoelectric double vibrators with different shapes and different supporting modes as acoustic vibration elements, in particular to a frequency division type piezoelectric bone conduction hearing device which has a novel structure and widens the response frequency domain of the bone conduction hearing device.
Background
Efforts have been made to study and optimize the performance of bone conduction hearing devices since the importance of bone conduction to sound conduction has been recognized. The bone conduction hearing device which is researched and produced is not only greatly convenient for hearing-impaired and professional users, but also the research and use objects are expanded to normal hearing people, so that the bone conduction hearing device products applied by normal hearing people are more and more popularized.
However, most of the current bone conduction hearing devices adopt a single piezoelectric vibrator, the single piezoelectric vibrator only can well reproduce audio signals near the resonance frequency of the single piezoelectric vibrator, and only a matrix corresponding to one frequency is good. Therefore, there is a need to solve the problem of narrow audio signal reproduction frequency band by a single piezoelectric element.
Disclosure of the invention
The invention aims to: a two-frequency-division piezoelectric bone conduction hearing device is provided to improve the current situation that the response frequency band of a piezoelectric element to an audio signal is narrow, and solve the problem that the existing head-mounted piezoelectric bone conduction hearing device cannot sufficiently reproduce low-frequency and high-frequency sound signals.
The technical scheme adopted by the invention is as follows: a two-frequency-division piezoelectric bone conduction hearing device comprises two piezoelectric vibrators for transmitting low and high frequencies. The lower rectangular piezoelectric vibrators are arranged in a crossed mode, and a mode of fixedly supporting in the middle and conducting at two ends is adopted. The upper round piezoelectric vibrators are arranged in parallel and adopt a mode of elastic support and middle conduction. The bottom end of the solid transmission guide post is bonded with the center of the round piezoelectric vibrator through the resin adhesive and penetrates through the center hole of the hollow transmission guide post to be flush with the upper end face of the hollow transmission post.
The structure provided by the invention has two piezoelectric vibrators with different shapes and different resonant frequencies, an audio signal is processed, a low-frequency signal enters a rectangular piezoelectric vibrator with lower resonant frequency, and a high-frequency signal enters a circular piezoelectric vibrator with higher resonant frequency, so that the audio signals with different frequencies are fully reproduced.
The invention has the advantages that: novel structure has solved current head-mounted piezoelectricity bone conduction auditory device and has reproduced the not abundant problem inadequately to low frequency, high frequency signal. Meanwhile, the low-frequency piezoelectric vibrator adopts a middle fixed support, the high-frequency piezoelectric vibrator adopts an elastic support, the problem that the reproduction frequency band of a single piezoelectric vibrator to an audio signal is narrow is solved, the conventional frequency range of 1000 plus 3000Hz is expanded to 400 plus 6000Hz, the stability of vibration and sound transmission of the piezoelectric bone conduction hearing device is improved, the rectangular piezoelectric vibrator and the circular piezoelectric vibrator are arranged in a crossed mode, the piezoelectric element does not need to be punched, and the circular piezoelectric element is prevented from being damaged.
Drawings
FIG. 1 is a front cross-sectional view of a divide-by-two piezoelectric bone conduction hearing device;
FIG. 2 is an exploded view of a two-frequency-division piezoelectric bone-conduction hearing device;
FIG. 3 is a view of a circular leaf spring configuration;
wherein, 1-a base; 2-supporting a column I; 3-a low-frequency rectangular piezoelectric vibrator; 4-a conducting frame; 5-a spring; 6-circular leaf spring; 7-support pillar II; 8-high frequency circular piezoelectric vibrator; 9-solid conductive posts; 10-a hollow transfer post; 11-upper cover; 12-contact film.
Detailed Description
A frequency-halving piezoelectric bone conduction hearing device: the upper cover (11) is fixedly connected with the base (1); the contact film (12) is fixedly connected with the upper cover (11); the lower surface of the low-frequency rectangular piezoelectric vibrator (3) is fixedly connected with the base (1) through a support pillar I (2); the upper surface is bonded with the hollow transmission guide post (10) through the transmission frame (4); the lower part of the round sheet spring (6) is fixedly connected with the base (1) through a spring (5); the upper surface is bonded with a second support pillar (7); the lower surface of the high-frequency circular piezoelectric vibrator (8) is fixedly connected with a second support pillar (7); the upper surface is fixedly connected with a solid transmission guide post (9); the upper ends of the two transmission guide columns are flush and simultaneously penetrate through the central hole of the upper cover (11) to be bonded with the contact film (12); in contact with the skull of a person.
When an audio signal is applied, the audio signal is processed and divided into a high frequency band and a low frequency band, when only the high frequency band signal enters the hearing device, the high frequency band signal only causes the vibration of the high resonance frequency piezoelectric vibrator arranged on the hearing device, the skull vibration of a person is caused through the solid transmission guide post, and the low frequency piezoelectric vibrator which is not excited by the audio signal does not generate the vibration; when the audio signal is only a low-frequency signal, the piezoelectric vibrator with low resonant frequency below is caused to vibrate, and the skull of a person is caused to vibrate through the hollow transmission guide pillar in the middle; when signals of two frequency bands exist simultaneously, the two piezoelectric vibrators vibrate simultaneously and drive the corresponding conduction columns to vibrate to cause vibration of the human skull, the vibration of the human skull transmits sound waves to the inner ear, the inner lymph in the cochlea compresses and flows to squeeze hair cells, and the sound waves are finally transmitted to the auditory center to enable a person to feel sound signals.
Claims (3)
1. A divide-by-two piezoelectric bone conduction hearing device is characterized in that: there are two piezoelectric vibrators that transmit high and low frequencies, respectively.
2. The frequency-halved piezoelectric bone-conduction hearing device according to claim 1, wherein: the rectangular piezoelectric vibrators are placed in a cross mode, the middle of the rectangular piezoelectric vibrators are adopted to be fixedly supported, the two ends of the rectangular piezoelectric vibrators are conducted, the upper circular piezoelectric vibrators are placed in parallel, the elastic supporting mode and the middle conducting mode are adopted, the hearing device is provided with two obvious natural frequencies in the elastic supporting mode, and therefore the loudness of the piezoelectric bone conduction hearing device in the middle frequency band is improved.
3. The frequency-halved piezoelectric bone-conduction hearing device according to claim 1, wherein: the bottom end of the hollow conducting column is bonded with the rectangular piezoelectric vibrator supporting beam through resin glue, the bottom end of the solid conducting column is bonded with the center of the circular piezoelectric vibrator through the resin glue and penetrates through the center hole of the hollow conducting column, and the upper end face of the hollow conducting column is flush with the upper end face of the solid conducting column and is bonded with the conducting film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110568793.7A CN113286236A (en) | 2021-05-25 | 2021-05-25 | Two frequency-dividing piezoelectric bone conduction hearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110568793.7A CN113286236A (en) | 2021-05-25 | 2021-05-25 | Two frequency-dividing piezoelectric bone conduction hearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113286236A true CN113286236A (en) | 2021-08-20 |
Family
ID=77281230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110568793.7A Withdrawn CN113286236A (en) | 2021-05-25 | 2021-05-25 | Two frequency-dividing piezoelectric bone conduction hearing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113286236A (en) |
-
2021
- 2021-05-25 CN CN202110568793.7A patent/CN113286236A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210820 |
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| WW01 | Invention patent application withdrawn after publication |