CN214256604U - Bone conduction hearing aid - Google Patents

Abstract

The utility model provides a bone conduction hearing aid, which comprises a microphone, an installation part and a bone conduction module, wherein the microphone and the bone conduction module are both installed on the installation part, and the microphone is electrically connected with the bone conduction module; the bone conduction module comprises a first bone conduction module used for transmitting signals lower than a first set frequency value and a second bone conduction module used for transmitting signals higher than a second set frequency value, and the first bone conduction module comprises a first vibrator which is arranged to be clung to the back surface of the auricle; the second bone conduction module comprises a second vibrator, and the second vibrator is arranged to be tightly attached to the mastoid bone so as to improve the accuracy of the bone conduction hearing aid in sound signal transmission.

Description

Bone conduction hearing aid

Technical Field

The utility model relates to a but not limited to medical instrument technical field especially relates to a bone conduction audiphone.

Background

A bone conduction hearing aid is a device that converts an audio signal into a vibration signal. In some cases, the bone conduction hearing aid is in a single-oscillator broadband bone conduction mode, the bone conduction hearing aid is worn on the ear, and both low-frequency signals and medium-high frequency signals in sound signals are transmitted through the ear cartilage on the auricle, so that the high-frequency signals are seriously attenuated, and the hearing aid effect is influenced.

The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.

SUMMERY OF THE UTILITY MODEL

Researches show that the medium-high frequency signals in the sound signals are the key points for people to know the sound information; most of the energy in the sound is concentrated on the low frequency signal, and the proportion of the energy occupied by the medium and high frequency signals, which is really relevant to the information content understanding, is small, and especially the energy occupied by the vital high frequency signal is very small. The above characteristics of sound do not adversely affect the hearing of normal hearing people, but affect the accuracy of sound delivery for hearing impaired people.

In some cases, the oscillator of the single-oscillator broadband bone conduction hearing aid is arranged to be closely attached to the auricle, and the arrangement mode transmits all frequency signals in sound to the inner ear through the ear cartilage, so that high-frequency signals are seriously attenuated, and the improvement of the accuracy of sound transmission is not facilitated. And the utility model provides a, the low frequency signal that will possess most energy transmits in order to reach the inner ear by the ear cartilage on the auricle, transmit the inner ear through mastoid bone with well high frequency signal, can reduce the energy attenuation of well high frequency signal in the transfer process, when low frequency signal and well high frequency signal that transmit through two transmission channel of ear cartilage and mastoid bone reachd the inner ear, the proportion that well high frequency signal occupied will appropriate increase, make the human body acquire key information more easily, in order to improve the accuracy of sound transmission.

The embodiment of the utility model provides a bone conduction hearing aid, including microphone, installed part and bone conduction module, microphone and bone conduction module are all installed on the installed part, and the microphone is connected with the bone conduction module electricity; the bone conduction module comprises a first bone conduction module used for transmitting signals lower than a first set frequency value and a second bone conduction module used for transmitting signals higher than a second set frequency value, and the first bone conduction module comprises a first vibrator which is arranged to be clung to the back surface of the auricle; the second bone conduction module comprises a second vibrator, and the second vibrator is arranged to cling to the mastoid bone.

After the technical scheme is adopted, the embodiment of the utility model provides a following beneficial effect has:

the utility model discloses bone conduction audiphone, for independent frequency division double-vibrator audiphone, through setting up low frequency signal into transmitting the inner ear by auricle cartilage through first oscillator, and set up well high frequency signal into transmitting the inner ear by mastoid bone through the second oscillator, reduced the decay of well high frequency signal in the transmission course for low frequency signal and well high frequency signal homoenergetic obtain transmitting well, and then improve the accuracy of bone conduction audiphone to the transmission of sound signal.

Other aspects will be apparent upon reading and understanding the attached drawings and detailed description.

Drawings

The accompanying drawings are included to provide a further understanding of the technical solutions of the present invention, and are incorporated in and constitute a part of this specification, together with the embodiments of the present invention for explaining the technical solutions of the present invention, and do not constitute a limitation on the technical solutions of the present invention.

Fig. 1 is a first schematic view illustrating the wearing of a bone conduction hearing aid according to an embodiment of the present invention;

fig. 2 is a second schematic view illustrating the wearing of the bone conduction hearing aid according to the embodiment of the present invention;

fig. 3 is a third schematic view illustrating the wearing of the bone conduction hearing aid according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a bone conduction hearing aid according to an embodiment of the present invention;

fig. 5 is a block diagram of a circuit structure of a bone conduction hearing aid according to an embodiment of the present invention.

Reference numerals:

1-a microphone; 2-a mounting member; 3-a first oscillator; 4-a second oscillator; 5-ear hook.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention.

In the embodiment of the present invention, as shown in fig. 1-4, an embodiment of the present invention provides a bone conduction hearing aid, including microphone 1, mounting part 2 and bone conduction module, microphone 1 and bone conduction module are all installed on mounting part 2, and microphone 1 is electrically connected with bone conduction module. The bone conduction module comprises a first bone conduction module used for transmitting signals lower than a first set frequency value and a second bone conduction module used for transmitting signals higher than a second set frequency value, the first bone conduction module comprises a first vibrator 3, and the first vibrator 3 is arranged to be clung to the back surface of an auricle; the second bone conduction module comprises a second vibrator 4, and the second vibrator 4 is arranged to cling to the mastoid bone.

In the bone conduction hearing aid, a mounting part 2 is used for mounting a microphone 1 and a bone conduction module, the microphone 1 can convert sound signals into electric signals, the bone conduction module is electrically connected with the microphone 1, the electric signals of the microphone 1 can be converted into vibration signals, and the vibration signals are transmitted to auditory nerves through percutaneous bone conduction.

The utility model discloses bone conduction audiphone is independent frequency division double-vibrator audiphone. In the bone conduction module, a first bone conduction module is set to be used for transmitting low-frequency signals, a second bone conduction module is set to be used for transmitting medium-high frequency signals, and a first vibrator 3 positioned at the output end of the first bone conduction module is set to be tightly attached to the back of an auricle so as to reduce energy attenuation of the low-frequency signals in the process of transmitting the low-frequency signals to an inner ear; and will be located the second oscillator 4 of second bone conduction module output and set up to hug closely the mastoid bone to the energy attenuation of high-frequency signal in the in-process of transmitting to the inner ear in great reduction, when the sound signal that transmits belongs to full frequency signal, the arrangement form of above-mentioned first oscillator 3 and second oscillator 4 for low frequency signal and well high-frequency signal homoenergetic obtain better transmission, and then improve the accuracy of sound transmission.

In addition, first oscillator 3 sets up to hug closely the auricle back, and second oscillator 4 sets up to hug closely mastoid bone for first bone conduction module and second bone conduction module can be hidden behind the auricle, realize stealthily.

In some exemplary embodiments, the second set frequency value is set to be smaller than the first set frequency value, that is, the frequencies of the signals transmitted by the first bone conduction module and the second bone conduction module are set to be partially overlapped, so that the loss of the frequencies within a certain range near the breakpoint value of the signals transmitted by the first bone conduction module and the second bone conduction module can be effectively avoided, and the integrity of signal transmission within a certain range by taking the breakpoint value as a reference point can be improved.

The first set frequency value can also be set to be equal to the second set frequency value according to the reliability of the signals transmitted by the first bone conduction module and the second bone conduction module and the accuracy of the whole structure.

In some exemplary embodiments, the first set frequency value is set to 2000Hz, and the frequency transmitted by the first bone conduction module is set between 200Hz and 2000 Hz; and setting the second set frequency value to be 1500Hz, and setting the frequency transmitted by the second bone conduction module to be 1500Hz to 8000 Hz.

Of course, the first set frequency value, the second set frequency value, the frequency transmitted by the first bone conduction module and the frequency transmitted by the second bone conduction module are not limited to the above, and may be adjusted according to actual needs.

In some exemplary embodiments, as shown in fig. 1-4, the mounting member 2 is configured as an ear pendant that can be hooked on the pinna to improve the convenience of wearing on the ear of a person and to facilitate the hearing aid to be concealed by hair or other accessories to improve the overall visual aesthetics; in addition, the bone conduction hearing aid is hooked on the auricle, so that the bone conduction hearing aid is similar to an earphone, and the psychological burden caused by wearing the bone conduction hearing aid is avoided.

In some exemplary embodiments, as shown in fig. 1-4, the microphone 1 is disposed at the ear canal opening, i.e., the microphone 1 is disposed at a more favorable focus, which is favorable for receiving sound (especially, middle and high frequency sound) to achieve effective sound reception. In addition, the microphone 1 is arranged on the front side of the human ear, so that the hearing habit of the human body is better met, the first vibrator 3 and the second vibrator 4 are arranged on the back side of the human ear, the distance between the microphone 1 and the two vibrators is far, and howling can be effectively avoided.

In some exemplary embodiments, as shown in fig. 1 to 4, the ear mount is configured as an ear mount having elasticity to provide elastic clamping force to the first vibrator 3 and the second vibrator 4 so that the first vibrator 3 and the second vibrator 4 respectively abut against the back surface of the auricle and the mastoid bone to ensure the conduction of vibration.

In some exemplary embodiments, the microphone 1 and the first vibrator 3 are arranged to be clamped on two sides of the auricle to adapt to slight differences in the appearance of different human ears, and the overall wearing comfort experience is improved.

In some exemplary embodiments, the first vibrator 3 is disposed lower than the microphone 1, and the first vibrator 3 is disposed near the ear lobe portion.

Compared with the first vibrator 3 and the microphone 1 which are at the same height, the position of the first vibrator 3 is lower than that of the microphone 1 and is close to the ear lobe part, so that the distance between the first vibrator 3 and the microphone 1 is longer, and howling can be prevented; compare with the position that first oscillator 3 is higher than microphone 1, first oscillator 3's position is lower simultaneously, can increase the scope that the auricle was surrounded to the ear-hang piece, promotes the steadiness that the ear-hang piece hook was hung on the auricle.

In some exemplary embodiments, as shown in fig. 1 to 4, the ear-hanging piece is arranged in a Y shape, and the microphone 1, the first bone conduction module and the second bone conduction module are respectively installed at three ends of the ear-hanging piece; or, the ear hanging piece is arranged in an omega shape, the first bone conduction module and the microphone 1 are respectively arranged at two end parts of the ear hanging piece, and the second bone conduction module is connected to the middle part of the ear hanging piece.

The arrangement mode can enable the first vibrator 3 and the second vibrator 4 to be well attached to the skin near the ears of a person, and is favorable for transmission of vibration signals. Of course, the shape of the ear hanging piece is not limited to the above shape, and can be changed according to actual requirements.

In some exemplary embodiments, as shown in fig. 1-4, an ear hook 5 is provided on the ear hook, and the microphone 1 is mounted to the ear hook 5. The ear hook 5 can be detachably mounted on the ear pendant, so that the microphone 1 can be replaced conveniently, and the use (maintenance or replacement) cost of the hearing aid in the whole service life can be effectively reduced. Alternatively, the ear hook 5 and the ear hook may be formed as an integral structure, and the microphone 1 may be detachably attached to the ear hook 5. Wherein the ear hook 5 may be ring-shaped or ring-shaped with an opening so that the microphone 1 is inserted into the ear hook 5.

In some exemplary embodiments, as shown in fig. 5, the first bone conduction module further comprises a low-pass filter and a first amplifier, an input terminal of the low-pass filter is arranged to be electrically connected with an output terminal of the microphone 1, an output terminal of the low-pass filter is arranged to be electrically connected with an input terminal of the first amplifier, and an output terminal of the first amplifier is arranged to be electrically connected with the first vibrator 3; in addition, the second bone conduction module further comprises a high-pass filter and a second amplifier, wherein the input end of the high-pass filter is electrically connected with the output end of the microphone 1, the output end of the high-pass filter is electrically connected with the input end of the second amplifier, and the output end of the second amplifier is electrically connected with the second oscillator 4.

Through the filtering of the low-pass filter and the high-pass filter, the original high-low frequency doped signals are clearly divided into low-frequency signals lower than a first set frequency value and medium-high frequency signals higher than a second set frequency value, and then the low-frequency signals and the medium-high frequency signals are amplified through corresponding amplifiers respectively, so that the influence of noise on the accuracy of target sound is avoided, and useless energy loss caused by signal processing outside the target frequency can be effectively avoided.

In some exemplary embodiments, the microphone 1 is configured as a miniature microphone that picks up sound omnidirectionally, so that the sound pick-up range of the hearing aid substantially covers the normal hearing range of the human ear; or, the microphone 1 is set to be a miniature microphone pointing to sound pickup, so that the accuracy of sound pickup and sound direction identification of the hearing aid can be effectively improved.

Since the piezoelectric vibrator has many advantages of low power consumption, no electromagnetic radiation, and easy miniaturization, and the like, the burden on the wearer can be effectively reduced, and therefore, in some exemplary embodiments, the first vibrator 3 is provided as the piezoelectric vibrator, and the second vibrator 4 is provided as the piezoelectric vibrator. In addition, in some exemplary embodiments, the cross-sectional shape of the first vibrator 3 is set to be rectangular or circular, and the cross-sectional shape of the second vibrator 4 is set to be square or circular, so that each vibrator has superior frequency response, that is, the first vibrator 3 has superior low-frequency response performance, and the second vibrator 4 has superior medium-high frequency response performance.

In the description herein, the terms "front", "back", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing embodiments of the present invention and simplifying the description, but do not indicate or imply that the structures referred to have a particular orientation, are constructed and operated in a particular orientation, and thus, should not be construed as limiting the present disclosure.

In the description of the embodiments of the present invention, unless expressly stated or limited otherwise, the terms "connected" and "attached" are to be construed broadly, e.g., "connected" may be a fixed connection, a removable connection, or an integral connection; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; either mechanically or electrically. The specific meaning of the above terms herein can be understood in a specific context to one of ordinary skill in the art.

Although the embodiments disclosed herein are described above, the descriptions are only for the convenience of understanding the embodiments and are not intended to limit the disclosure. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure, and that the scope of the disclosure herein is to be limited only by the appended claims.

Claims (10)

1. A bone conduction hearing aid comprises a microphone, a mounting part and a bone conduction module, wherein the microphone and the bone conduction module are both mounted on the mounting part, and the microphone is electrically connected with the bone conduction module.

2. The bone conduction hearing aid according to claim 1, wherein the second set frequency value is less than the first set frequency value such that the frequencies transmitted by the first and second bone conduction modules partially overlap;

alternatively, the first set frequency value and the second set frequency value are equal.

3. The bone conduction hearing aid according to claim 1, wherein the first set frequency value is 2000Hz, and the frequency transmitted by the first bone conduction module is set between 200Hz and 2000 Hz;

the second set frequency value is 1500Hz, and the frequency transmitted by the second bone conduction module is set to be 1500Hz to 8000 Hz.

4. Bone conduction hearing aid as claimed in any of the claims 1-3, characterized in that the mounting part is an ear suspension part which can be hooked onto the pinna, the microphone being arranged to be located at the mouth of the ear canal.

5. The bone conduction hearing aid according to claim 4, wherein the ear piece is a resilient ear piece, and the microphone and the first transducer are arranged to be clamped on both sides of the pinna.

6. The bone conduction hearing aid of claim 4, wherein the first transducer is positioned lower than the microphone, the first transducer being positioned proximate to the earlobe.

7. The bone conduction hearing aid of claim 4, wherein the ear piece is Y-shaped, and the microphone, the first bone conduction module and the second bone conduction module are respectively mounted at three ends of the ear piece;

or the ear pendant is in an omega shape, the first bone conduction module and the microphone are respectively arranged at two end parts of the ear pendant, and the second bone conduction module is connected to the middle part of the ear pendant.

8. The bone conduction hearing aid of claim 4, wherein the ear pendant has an ear hook thereon, the microphone being mounted to the ear hook.

9. The bone conduction hearing aid according to any one of claims 1 to 3, wherein the first bone conduction module further comprises a low pass filter and a first amplifier, an input of the low pass filter is electrically connected to an output of the microphone, an output of the low pass filter is electrically connected to an input of the first amplifier, and an output of the first amplifier is electrically connected to the first vibrator;

the second bone conduction module further comprises a high-pass filter and a second amplifier, wherein the input end of the high-pass filter is electrically connected with the output end of the microphone, the output end of the high-pass filter is electrically connected with the input end of the second amplifier, and the output end of the second amplifier is electrically connected with the second oscillator.

10. The bone conduction hearing aid according to any one of claims 1 to 3, wherein the microphone is configured as a miniature microphone for picking up sound in all directions or as a miniature microphone for picking up sound in all directions, the first vibrator is configured as a piezoelectric vibrator, and the second vibrator is configured as a piezoelectric vibrator.

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