CN113207070A - Double-frequency-division piezoelectric bone conduction hearing device - Google Patents
Double-frequency-division piezoelectric bone conduction hearing device Download PDFInfo
- Publication number
- CN113207070A CN113207070A CN202110487880.XA CN202110487880A CN113207070A CN 113207070 A CN113207070 A CN 113207070A CN 202110487880 A CN202110487880 A CN 202110487880A CN 113207070 A CN113207070 A CN 113207070A
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- frequency
- low
- piezoelectric vibrator
- conduction
- piezoelectric
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 210000003625 skull Anatomy 0.000 claims abstract description 11
- 239000010409 thin film Substances 0.000 claims description 7
- 239000002131 composite material Substances 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 230000005236 sound signal Effects 0.000 description 8
- 239000010408 film Substances 0.000 description 2
- 208000032041 Hearing impaired Diseases 0.000 description 1
- 210000003477 cochlea Anatomy 0.000 description 1
- 210000003027 ear inner Anatomy 0.000 description 1
- 210000002266 hair cells auditory Anatomy 0.000 description 1
- 230000005237 high-frequency sound signal Effects 0.000 description 1
- 210000002751 lymph Anatomy 0.000 description 1
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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
- H04R17/00—Piezoelectric transducers; Electrostrictive 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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
-
- 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
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Headphones And Earphones (AREA)
Abstract
The invention relates to a double-frequency-division piezoelectric bone conduction hearing device which mainly comprises a lower shell, a high-frequency supporting column, a high-frequency piezoelectric vibrator, a low-frequency supporting column, a low-frequency conduction frame, a high-frequency conduction guide column, an upper shell and a film, wherein the high-frequency conduction guide column is arranged on the lower shell; the piezoelectric vibrator is formed by sticking a piezoelectric fiber composite material and a metal substrate; the low-frequency transmission frame consists of a support beam and a hollow low-frequency transmission guide pillar; the high-frequency support column and the low-frequency support column are fixed on the lower shell, two ends of the high-frequency piezoelectric vibrator are fixed on the upper surface of the high-frequency support column, the middle of the low-frequency piezoelectric vibrator is fixed on the upper surface of the low-frequency support column, two ends of the low-frequency conduction frame are adhered to two ends of the low-frequency piezoelectric vibrator, the high-frequency conduction column is adhered to the high-frequency piezoelectric vibrator, the upper ends of the two conduction columns are parallel and level and penetrate through the center hole of the upper shell simultaneously, and the high-frequency conduction columns are in contact with the skull of a person through a film.
Description
Technical Field
The invention relates to a novel bone conduction hearing device with a piezoelectric double vibrator as a sound vibration element, 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. Most of the existing piezoelectric bone conduction hearing devices only use a single piezoelectric vibrator, only audio signals close to the resonant frequency of the piezoelectric bone conduction hearing device are sufficiently reproduced, the reproduction of audio signals with higher frequency or lower frequency is not ideal, and the response frequency domain is narrow.
Disclosure of Invention
The invention aims to: the utility model provides a novel frequency division formula piezoelectricity bone conduction auditory device to improve the narrower current situation of piezoelectric element to audio signal response frequency channel, solve current wear-type piezoelectricity bone conduction auditory device and reproduce the not enough problem of low frequency, high frequency sound signal.
The technical scheme adopted by the invention is as follows: a double-frequency-division piezoelectric bone conduction hearing device comprises a lower shell (1), a high-frequency supporting column (2), a high-frequency piezoelectric vibrator (3-1), a low-frequency piezoelectric vibrator (3-2), a low-frequency supporting column (4), a low-frequency conduction frame (5), a high-frequency conduction column (6), an upper shell (7) and a thin film (8). The low-frequency conduction frame (5) is composed of a support beam (5-1) and a hollow low-frequency conduction guide post (5-2), the high-frequency support post (2) and the low-frequency support post (4) are fixed on the lower shell (1), two ends of the high-frequency piezoelectric vibrator (3-1) are fixed on the upper surface of the high-frequency support post (2), the middle of the low-frequency piezoelectric vibrator (3-2) is fixed on the upper surface of the low-frequency support post (4), two ends of the low-frequency conduction frame (5) are bonded on two ends of the low-frequency piezoelectric vibrator (3-2), the high-frequency conduction post (6) is bonded on the high-frequency piezoelectric vibrator (3-1), the upper ends of the two conduction guide posts are parallel and level and penetrate through a center hole of the upper shell (7) simultaneously, and are in contact with a human skull through a thin film (8).
As a further improvement of the technical scheme, the lower low-frequency piezoelectric vibrators (3-2) are arranged in parallel, a middle fixed support and two-end conduction mode is adopted, the upper high-frequency piezoelectric vibrators (3-1) and the lower low-frequency piezoelectric vibrators (3-2) are arranged in a crossed mode, and the two-end fixed support and the middle conduction mode are adopted, so that high-frequency signals and low-frequency signals can be received simultaneously, and the whole volume can be greatly reduced.
As a further improvement of the technical scheme, the piezoelectric vibrator has the advantages that the piezoelectric vibrator is not required to be punched, and the problem that the piezoelectric vibrator is damaged when in work can be effectively solved, wherein the piezoelectric vibrator is provided with the high-frequency transmission guide post (6) and the low-frequency transmission frame (5), and the low-frequency transmission frame (5) consists of the supporting beam (5-1) and the hollow low-frequency transmission guide post (5-2).
As a further improvement of the technical scheme, a film (8) is adhered above the central hole of the upper shell (7), so that the damage to the skull caused by overlarge amplitude when the piezoelectric vibrator drives the transmission guide post to vibrate can be reduced.
Drawings
Fig. 1 is a view showing an internal structure of the present invention.
Fig. 2 is a front sectional view of the present invention.
Fig. 3 is a schematic view of the low frequency conducting frame (5).
Fig. 4 shows an exploded view of the present invention.
FIG. 5 is a schematic view of the present invention.
Detailed description of the preferred embodiments
The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.
Referring to fig. 1 to 5, in an embodiment of the present invention, the structure includes:
a double-frequency-division piezoelectric bone conduction hearing device comprises a lower shell (1), a high-frequency supporting column (2), a high-frequency piezoelectric vibrator (3-1), a low-frequency piezoelectric vibrator (3-2), a low-frequency supporting column (4), a low-frequency conduction frame (5), a high-frequency conduction column (6), an upper shell (7) and a thin film (8); the low-frequency conduction frame (5) is composed of a support beam (5-1) and a hollow low-frequency conduction guide post (5-2), the high-frequency support post (2) and the low-frequency support post (4) are fixed on the lower shell (1), two ends of the high-frequency piezoelectric vibrator (3-1) are fixed on the upper surface of the high-frequency support post (2), the middle of the low-frequency piezoelectric vibrator (3-2) is fixed on the upper surface of the low-frequency support post (4), two ends of the low-frequency conduction frame (5) are bonded on two ends of the low-frequency piezoelectric vibrator (3-2), the high-frequency conduction post (6) is bonded on the high-frequency piezoelectric vibrator (3-1), the upper ends of the two conduction guide posts are parallel and level and penetrate through a center hole of the upper shell (7) simultaneously, and are in contact with a human skull through a thin film (8).
As a further improvement of the technical scheme, the lower low-frequency piezoelectric vibrators (3-2) are arranged in parallel, a middle fixed support and two-end conduction mode is adopted, the upper high-frequency piezoelectric vibrators (3-1) and the lower low-frequency piezoelectric vibrators (3-2) are arranged in a crossed mode, and the two-end fixed support and the middle conduction mode are adopted, so that high-frequency signals and low-frequency signals can be received simultaneously, and the whole volume can be greatly reduced.
As a further improvement of the technical scheme, the piezoelectric vibrator has the advantages that the piezoelectric vibrator is not required to be punched, and the problem that the piezoelectric vibrator is damaged when in work can be effectively solved, wherein the piezoelectric vibrator is provided with the high-frequency transmission guide post (6) and the low-frequency transmission frame (5), and the low-frequency transmission frame (5) consists of the supporting beam (5-1) and the hollow low-frequency transmission guide post (5-2).
As a further improvement of the technical scheme, a film (8) is adhered above the central hole of the upper shell (7), so that the damage to the skull caused by overlarge amplitude when the piezoelectric vibrator drives the transmission guide post to vibrate can be reduced.
The working principle is as follows: 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 a high frequency signal enters the hearing device, the high frequency signal only causes the vibration of a high frequency piezoelectric vibrator (3-1) arranged on the high frequency signal, and causes the vibration of a human skull through a high frequency conduction column (6), and the low frequency piezoelectric vibrator which is not excited by the audio signal does not generate the vibration; when the incoming audio signal is only a low-frequency signal, only the low-frequency piezoelectric vibrator arranged below vibrates and causes the vibration of the skull of a person through the corresponding hollow low-frequency transmission guide post (5-2), and the high-frequency piezoelectric vibrator which is not stimulated by the low-frequency signal does not vibrate; when signals of two different frequency bands enter the hearing device, the corresponding two piezoelectric vibrators drive the corresponding conduction columns to cause the human skull to vibrate. The vibration of the skull transmits sound waves to the inner ear, the internal lymph in the cochlea compresses and flows, the auditory hair cells are squeezed, and finally the sound waves are transmitted to the auditory center to enable a person to feel sound signals.
Claims (4)
1. A double-frequency-division piezoelectric bone conduction hearing device comprises a lower shell (1), a high-frequency supporting column (2), a high-frequency piezoelectric vibrator (3-1), a low-frequency piezoelectric vibrator (3-2), a low-frequency supporting column (4), a low-frequency conduction frame (5), a high-frequency conduction column (6), an upper shell (7) and a thin film (8); the low-frequency transmission frame (5) consists of a support beam (5-1) and a hollow low-frequency transmission guide post (5-2); the high-frequency piezoelectric vibrator is characterized in that the high-frequency supporting column (2) and the low-frequency supporting column (4) are fixed on the lower shell (1), two ends of the high-frequency piezoelectric vibrator (3-1) are fixed on the upper surface of the high-frequency supporting column (2), the middle part of the low-frequency piezoelectric vibrator (3-2) is fixed on the upper surface of the low-frequency supporting column (4), two ends of the low-frequency conducting frame (5) are adhered to two ends of the low-frequency piezoelectric vibrator (3-2), the high-frequency conducting column (6) is adhered to the high-frequency piezoelectric vibrator (3-1), the upper ends of the two conducting columns are parallel and level and penetrate through a center hole of the upper shell (7) at the same time, and the two conducting columns are in contact with a human skull through a thin film (8).
2. The dual-frequency-division piezoelectric bone conduction hearing device according to claim 1, wherein the lower low-frequency piezoelectric vibrator (3-2) is arranged in parallel and adopts a middle fixed branch and two-end conduction mode, the upper high-frequency piezoelectric vibrator (3-1) and the lower low-frequency piezoelectric vibrator (3-2) are arranged in a crossed mode and adopt a two-end fixed branch and middle conduction mode, so that high-frequency and low-frequency signals can be received simultaneously, and the whole volume can be greatly reduced.
3. The dual-frequency-division piezoelectric bone conduction hearing device according to claim 1, wherein the dual-frequency-division piezoelectric bone conduction hearing device comprises a high-frequency conduction pillar (6) and a low-frequency conduction frame (5), the low-frequency conduction frame (5) comprises a support beam (5-1) and a hollow low-frequency conduction pillar (5-2), and the piezoelectric vibrator does not need to be perforated, so that the problem of damage during operation of the piezoelectric vibrator can be effectively avoided.
4. The dual-frequency-division piezoelectric bone conduction hearing device according to claim 1, wherein a thin film (8) is adhered to the upper part of the central hole of the upper shell (7), so that damage to the skull due to excessive amplitude when the piezoelectric vibrator drives the transmission guide post to vibrate can be reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110487880.XA CN113207070A (en) | 2021-05-06 | 2021-05-06 | Double-frequency-division piezoelectric bone conduction hearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110487880.XA CN113207070A (en) | 2021-05-06 | 2021-05-06 | Double-frequency-division piezoelectric bone conduction hearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113207070A true CN113207070A (en) | 2021-08-03 |
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ID=77030039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110487880.XA Withdrawn CN113207070A (en) | 2021-05-06 | 2021-05-06 | Double-frequency-division piezoelectric bone conduction hearing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113207070A (en) |
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2021
- 2021-05-06 CN CN202110487880.XA patent/CN113207070A/en not_active Withdrawn
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210803 |
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| WW01 | Invention patent application withdrawn after publication |