Bone conduction hearing-aid apparatus

Abstract

Disclosed in the present invention is a bone conduction hearing-aid apparatus, comprising: a support structure, which comprises a rear hanging portion, ear hanging portions, first mounting portions and second mounting portions, wherein two ends of the rear hanging portion are respectively connected to the first mounting portions, and the first mounting portions are connected to the second mounting portions by means of the ear hanging portions; loudspeakers, which are mounted in the second mounting portions and are configured to play a hearing-aid sound signal; and a plurality of microphones, which are arranged on connecting side faces and are configured to receive the sound signal and convert the sound signal into an electrical signal. During the vibration of the first mounting portions, outer side faces and inner side faces of the first mounting portions vibrate and generate sound waves with the same amplitude and frequency but the opposite phase, so as to form a pair of dipoles, so that a sound wave "cancellation" effect is created on the connecting side faces between the outer side faces and the inner side faces; and the plurality of microphones are arranged on the connecting side faces of the first mounting portions, so that the interference of the vibration of the first mounting portions on the sound pickup of the microphones can be reduced, thereby improving the noise reduction effect of the microphones' sound pickup.

Description

A bone conduction hearing aid Technical Field

[0001] This invention relates to the field of acoustics, and more specifically to a bone conduction hearing aid. Background Technology

[0002] Bone conduction hearing aids are devices that use bone conduction to transmit sound, helping people with hearing impairments to hear. The microphone plays a crucial role as the device that captures ambient sound; its reception quality determines the hearing experience, safety, and social abilities of the hearing-impaired patient. While bone conduction hearing aids transmit external sound to the patient through vibrations, the vibrations of the casing can interfere with the microphone's reception to some extent, affecting its sound pickup. Summary of the Invention

[0003] This invention provides a bone conduction hearing aid device to solve the problem of interference with microphone reception caused by shell vibration.

[0004] In one embodiment, a bone conduction hearing aid is provided, comprising:

[0005] The support structure includes a back hook, an ear hook, a first mounting part, and a second mounting part. Each end of the back hook is connected to a first mounting part, and the first mounting part is connected to the second mounting part via the ear hook. The back hook is worn on the back of the user's head, and the ear hook is worn on the upper part of the user's ear. The first mounting part includes an inner side facing the user when worn, an outer side facing away from the user when worn, and a connecting side connecting the inner side and the outer side.

[0006] A loudspeaker, installed in the second mounting portion, is configured to play hearing aid sound signals;

[0007] Multiple microphones are disposed on the connection side, and the microphones are configured to receive sound signals and convert the sound signals into electrical signals.

[0008] In one embodiment, the microphone includes at least a first microphone and a second microphone, which are spaced apart.

[0009] In one embodiment, the connecting side includes an upper connecting side that faces upward when worn and a lower connecting side that faces downward or backward when worn, and the first microphone and the second microphone are disposed on the lower connecting side.

[0010] In one embodiment, the lower connecting side includes a first lower connecting side and a second lower connecting side with a certain included angle. The angle between the first lower connecting side and the upper connecting side is smaller than the angle between the second lower connecting side and the upper connecting side. The second lower connecting side faces away from the second mounting portion. The first microphone is disposed on the first lower connecting side, and the second microphone is disposed on the second lower connecting side.

[0011] In one embodiment, the lower connecting side includes a first lower connecting side and a second lower connecting side with a certain included angle, wherein the first microphone and the second microphone are disposed on the first lower connecting side, or the first microphone and the second microphone are disposed on the second lower connecting side.

[0012] In one embodiment, there is a plane of symmetry between the outer side and the inner side, and the first microphone and the second microphone are located outside the plane of symmetry and / or on the plane of symmetry, respectively.

[0013] In one embodiment, the first microphone and / or the second microphone located on the outer side of the plane of symmetry are closer to the plane of symmetry than the outer side.

[0014] In one embodiment, the distance between the first microphone and / or the second microphone and the plane of symmetry is 0 mm to 5 mm.

[0015] In one embodiment, the first projection line of the line connecting the first microphone and the second microphone projected onto the outer side intersects with the second projection line of the upper connecting side projected onto the outer side.

[0016] In one embodiment, the angle between the first projection line and the second projection line is 0° to 60°.

[0017] In one embodiment, the angle between the first projection line and the second projection line is 0° to 30°.

[0018] In one embodiment, the angle between the first projection line and the second projection line is 5° to 65°.

[0019] In one embodiment, the angle between the first projection line and the second projection line is 5° to 35°.

[0020] In one embodiment, the first projection line is parallel to the horizontal line when the bone conduction hearing aid is worn.

[0021] In one embodiment, the distance between the first microphone and the second microphone is 2 mm to 45 mm.

[0022] In one embodiment, a bone conduction hearing aid is provided, comprising:

[0023] The support structure includes a back hook, an ear hook, a first mounting part, and a second mounting part. Each end of the back hook is connected to a first mounting part, and the first mounting part is connected to the second mounting part via the ear hook. The back hook is worn on the back of the user's head, and the ear hook is worn on the upper part of the user's ear. The first mounting part includes an inner side facing the user when worn, an outer side facing away from the user when worn, and a connecting side connecting the inner side and the outer side.

[0024] A loudspeaker, installed in the second mounting portion, is configured to play hearing aid sound signals;

[0025] Multiple microphones are disposed on the connecting side and the outer side, and the microphones are configured to receive sound signals and convert the sound signals into electrical signals.

[0026] In one embodiment, the microphone includes at least a first microphone and a second microphone, which are spaced apart.

[0027] In one embodiment, the connecting side includes an upper connecting side that faces upward when worn and a lower connecting side that faces downward or backward when worn, the first microphone is disposed on the lower connecting side, and the second microphone is disposed on the outer side.

[0028] In one embodiment, the lower connecting side includes a first lower connecting side and a second lower connecting side with a certain included angle. The angle between the first lower connecting side and the upper connecting side is smaller than the angle between the second lower connecting side and the upper connecting side. The second lower connecting side faces away from the second mounting portion, and the first microphone is disposed on the second lower connecting side.

[0029] In one embodiment, there is a plane of symmetry between the outer side and the inner side, and the first microphone is located outside the plane of symmetry or on the plane of symmetry.

[0030] In one embodiment, the first microphone is closer to the plane of symmetry than the outer side.

[0031] In one embodiment, the distance between the first microphone and the symmetrical plane is 0 mm to 5 mm.

[0032] In one embodiment, the first projection line of the line connecting the first microphone and the second microphone projected onto the outer side intersects with the second projection line of the upper connecting side projected onto the outer side.

[0033] In one embodiment, the angle between the first projection line and the second projection line is +60° to -60°, +60° to -30°, 0° to 30°, or 5° to 35°.

[0034] In one embodiment, the first projection line is parallel to the horizontal line when the bone conduction hearing aid is worn.

[0035] In one embodiment, the distance between the first microphone and the second microphone is 2 mm to 30 mm.

[0036] In one embodiment, a bone conduction hearing aid is provided, comprising:

[0037] The support structure includes a back hook, an ear hook, a first mounting part, and a second mounting part. Each end of the back hook is connected to a first mounting part, and the first mounting part is connected to the second mounting part via the ear hook. The back hook is worn on the back of the user's head, and the ear hook is worn on the upper part of the user's ear. The first mounting part includes an inner side facing the user when worn, an outer side facing away from the user when worn, and a connecting side connecting the inner side and the outer side.

[0038] A loudspeaker, installed in the second mounting portion, is configured to play hearing aid sound signals;

[0039] Multiple microphones are disposed on the outer side, and the multiple microphones are located on a straight line, the straight line being parallel to the vibration axis of the first mounting part; the microphones are configured to receive sound signals and convert the sound signals into electrical signals.

[0040] In one embodiment, the outer side and the inner side have a plane of symmetry, and the straight line is parallel to the plane of symmetry.

[0041] In one embodiment, the connecting side includes an upper connecting side that faces upward when worn and a lower connecting side that faces downward or backward when worn, and the first projection line of the straight line projected onto the outer side intersects with the second projection line of the upper connecting side projected onto the outer side.

[0042] In one embodiment, the angle between the first projection line and the second projection line is +60° to -60°.

[0043] In one embodiment, the angle between the first projection line and the second projection line is +60° to -30°.

[0044] In one embodiment, the angle between the first projection line and the second projection line is +30° to -30°.

[0045] In one embodiment, the angle between the first projection line and the second projection line is 0° to -30° or 5° to 35°.

[0046] In one embodiment, the microphone includes at least a first microphone and a second microphone, and the distance between the first microphone and the second microphone is 2 mm to 30 mm.

[0047] According to the bone conduction hearing aid device of the above embodiment, when the bone conduction hearing aid device provides acoustic feedback to the hearing-impaired patient, the vibration of the speaker will inevitably be transmitted to the first mounting part. The vibration of the first mounting part will affect the sound reception of the microphone on the first mounting part, resulting in noise in the sound reception and increasing the possibility of feedback. During the vibration of the first mounting part, the outer and inner surfaces of the first mounting part will vibrate and generate sound waves with the same amplitude and frequency but opposite phase, forming a pair of dipoles. A sound wave "cancellation" effect will be formed on the connecting side between the outer and inner surfaces. By setting multiple microphones on the connecting side of the first mounting part, the interference of the vibration of the first mounting part on the microphone sound reception can be reduced, and the noise reduction effect of the microphone sound reception can be improved. Attached Figure Description

[0048] Figure 1 is a schematic diagram of the structure of a bone conduction hearing aid device in one embodiment;

[0049] Figure 2 is a partial structural schematic diagram of a bone conduction hearing aid device in one embodiment;

[0050] Figure 3 is a partial structural schematic diagram of a bone conduction hearing aid device in one embodiment;

[0051] Figure 4 is a schematic diagram of a bone conduction hearing aid being worn in one embodiment;

[0052] Figure 5 is a side view of a bone conduction hearing aid device in one embodiment;

[0053] Figure 6 is a schematic diagram of the structure of a bone conduction hearing aid device in one embodiment;

[0054] Figure 7 is a schematic diagram of the structure of a bone conduction hearing aid device in one embodiment;

[0055] Figure 8 is a schematic diagram of the structure of a bone conduction hearing aid device in one embodiment;

[0056] Figure 9 is a schematic diagram of the structure of a bone conduction hearing aid device in one embodiment;

[0057] Figure 10 is a side view of a bone conduction hearing aid device in one embodiment;

[0058] Figure 11 is a schematic diagram of the structure of a bone conduction hearing aid device in one embodiment;

[0059] The accompanying diagrams are labeled as follows:

[0060] 1-Support structure. 11-Rear hanging part, 12-Ear hanging part, 13-First mounting part, 131-Inner side, 132-Outer side, 133-Connecting side, 1331-Upper connecting side, 1332-Lower connecting side, 13321-First lower connecting side, 13322-Second lower connecting side, 1333-Front connecting side, 14-Second mounting part;

[0061] 2-Speakers;

[0062] 3-Microphone, 31-First microphone, 32-Second microphone;

[0063] P - plane of symmetry, X - vibration axis. Detailed Implementation

[0064] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of this application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to this application are not shown or described in the specification. This is to avoid obscuring the core parts of this application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0065] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0066] The serial numbers used in this document, such as "first" and "second," are merely for distinguishing the objects being described and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0067] In one embodiment, a bone conduction hearing aid is provided. This bone conduction hearing aid is a headband-type device used to be worn on the ears and head of a hearing-impaired patient. The headband-type device has higher wearing stability and is less likely to fall off. The hearing-impaired patient can also wear this bone conduction hearing aid during exercise. This bone conduction hearing aid redesigns the microphone position, placing it on the connecting side between the outer and inner sides of the mounting part. Vibrations from the outer and inner sides of the mounting part will cancel each other out when transmitted to the connecting side. In other words, the microphone located on the connecting side experiences far less vibration interference than one located on the outer or inner side. This redesigned microphone position significantly reduces vibration interference and improves noise reduction during sound reception.

[0068] Please refer to Figure 1. The bone conduction hearing aid device in this embodiment mainly includes a support structure 1, a speaker 2, and a microphone 3.

[0069] The support structure 1 includes a back hook 11, an ear hook 12, a first mounting part 13, and a second mounting part 14. There is one back hook 11, and two ear hooks 12, two first mounting parts 13, and two second mounting parts 14. A first mounting part 13 is connected to each end of the back hook 11. The first mounting part 13 is connected to the second mounting part 14 via the ear hook 12. That is, the second mounting part 14, ear hook 12, first mounting part 13, back hook 11, first mounting part 13, ear hook 12, and second mounting part 14 are connected sequentially. The ear hooks 12, first mounting parts 13, and second mounting parts 14 connected to both ends of the back hook 11 can be symmetrically arranged. The back hook 11 is an arc-shaped structure adapted to the human head and is worn on the back of the user's (hearing-impaired patient's) head. The ear hook 12 is an arc-shaped structure adapted to the outer ear and is worn on the upper part of the user's ear. The first mounting part 13 is worn at the opening of the user's ear canal.

[0070] The support structure 1 can be a single, integrated structure, such as a structure made of silicone or similar materials. A single-piece support structure 1 offers better connection stability and a seamless, more aesthetically pleasing appearance.

[0071] In other embodiments, part of the support structure 1 is an integrated structure, while other parts are fixed by connections. For example, the ear hook 12, the first mounting part 13, and the second mounting part 14 are integrated structures, and the rear hook part 11 is fixedly connected to the first mounting part 13 by means of plugging, threaded connection, etc. This arrangement allows the support structure 1 to have rear hook parts 11 of different lengths and curvatures to adapt to users with different head sizes.

[0072] In this embodiment, the speaker 2 is installed within the second mounting portion 14, with a portion of the speaker 2 protruding from the second mounting portion 14. The protruding portion of the speaker 2 is used to contact the user's ear or the edge of the ear when worn. The speaker 2 is configured to play hearing aid sound signals, that is, the speaker 2 is used to play sound. Each second mounting portion 14 is equipped with one speaker 2, enabling audio playback of the left and right channels.

[0073] Microphone 3 is configured to receive sound signals and convert the sound signals into electrical signals. Microphone 3 is mainly used to collect external sounds for the user.

[0074] Each first mounting part 13 is provided with multiple microphones 3. Preferably, each first mounting part 13 is provided with two microphones 3. The two microphones 3 can form a certain sound reception difference, which is convenient for eliminating interference. In addition, the two microphones 3 can also achieve directional sound reception and improve the sound reception effect. In other embodiments, a first mounting part 13 may also be provided with three or more microphones 3.

[0075] It should be noted that in this application, the microphone 3 is located on the side of the first mounting part 13, which means that the side of the first mounting part 13 is provided with a corresponding sound receiving hole for the microphone 3, and the microphone 3 is located inside the first mounting part 13 and close to the sound receiving hole.

[0076] The first mounting part 13 has an approximately cuboid structure and a receiving cavity within it. This cavity can be used to mount components such as circuit boards and batteries. Alternatively, the circuit boards and batteries can also be mounted on other parts of the support structure 1, such as the second mounting part 14 or the rear mounting part 11.

[0077] The first mounting portion 13 includes an inner surface 131, an outer surface 132, and a connecting surface 133. When this bone conduction hearing aid is worn, the inner surface 131 faces the user and can be placed against the user's head or with a slight gap between them, while the outer surface 132 faces away from the user. The outer surface 132 and the inner surface 131 can be arranged parallel to each other. The connecting surface 133 connects the inner surface 131 and the outer surface 132. The connecting surface 133, the inner surface 131, and the outer surface 132 together form the outer surface of the first mounting portion 13. The rear hook portion 11 and the ear hook portion 12 are respectively connected to the connecting surface 133.

[0078] The first mounting part 13 has a flat structure. This flat structure allows the shape of the first mounting part 13 to better conform to the user's head when wearing the bone conduction hearing aid, while also reducing the thickness of the first mounting part 13. This makes the first mounting part 13 fit the user's head more closely without protruding excessively, resulting in a more aesthetically pleasing appearance. The distance between the outer side 132 and the inner side 131 is less than the length and width of the outer side 132 and the inner side 131. The connecting side 133 between the outer side 132 and the inner side 131 can also be referred to as a narrow surface.

[0079] The connecting side 133 includes an upper connecting side 1331 and a lower connecting side 1332. When worn, the upper connecting side 1331 faces upward and the lower connecting side 1332 faces downward. Of course, the upper connecting side 1331 and the lower connecting side 1332 can face vertically upward or downward, or they can be tilted upward or tilted downward. The lower connecting side 1332 can also face backward or tilted backward.

[0080] The connecting side 133 also includes a front connecting side 1333, which faces the user's front when worn. The rear connecting side of the connecting side 133 is connected to the rear hook part 11, which covers the rear connecting side of the connecting side 133. The ear hook part 12 is connected to the upper connecting side 1331, which covers part of the upper connecting side 1331.

[0081] The upper connecting side 1331 is a plane, and the lower connecting side 1332 includes two planes. The lower connecting side 1332 includes a first lower connecting side 13321 and a second lower connecting side 13322. The first lower connecting side 13321 and the upper connecting side 1331 can be parallel or approximately parallel. There is a certain angle between the first lower connecting side 13321 and the second lower connecting side 13322. The angle between the first lower connecting side 13321 and the upper connecting side 1331 is smaller than the angle between the second lower connecting side 13321 and the upper connecting side 1331. That is, the second lower connecting side 13321 is tilted downward and backward. When worn, the second lower connecting side 13322 faces the user's lower rear. The second lower connecting side 13322 can also be called the rear connecting side of the connecting side 133.

[0082] Among them, the upper connecting side 1331, the lower connecting side 1332 and the front connecting side 1333 can also be curved or arc surfaces, and the connection points of each side can be set as arc transitions.

[0083] In this embodiment, the first mounting part 13 is provided with dual microphones 3 as an example. The two microphones 3 include a first microphone 31 and a second microphone 32 arranged at intervals. The first microphone 31 and the second microphone 32 can be disposed on any one or both of the first lower connecting side 13321 and the second lower connecting side 13322. For example, referring to FIG1, the first microphone 31 is disposed on the first lower connecting side 13321 and the second microphone 32 is disposed on the second lower connecting side 13322; or, referring to FIG2, both the first microphone 31 and the second microphone 32 are disposed on the first lower connecting side 13321; or, referring to FIG3, both the first microphone 31 and the second microphone 32 are disposed on the second lower connecting side 13322.

[0084] In this embodiment, the dual microphones 3 are positioned on the lower connecting side 1332. Firstly, they are less likely to be blocked by the ears, which is more conducive to collecting the sound in front of the user. Secondly, the dual microphones 3 are located at the bottom, which makes them less likely to be blocked by dust, especially on rainy days, and less likely to get wet.

[0085] In this embodiment, when the bone conduction hearing aid provides acoustic feedback to the hearing-impaired patient, the vibration of the speaker 2 will inevitably be transmitted to the first mounting part 13. The vibration of the first mounting part 13 will interfere with the sound reception of the microphone 3 of the first mounting part 13, resulting in noise and increasing the possibility of feedback. During the vibration of the first mounting part 13, the outer surface 132 and the inner surface 131 of the first mounting part 13 will vibrate and generate sound waves with the same amplitude and frequency but opposite phase, forming a pair of dipoles. A sound wave "cancellation" effect will be formed on the connecting surface 133 between the outer surface 132 and the inner surface 131. By placing multiple microphones 3 on the connecting surface 133 of the first mounting part 13, especially on the symmetrical plane between the inner surface 131 and the outer surface 132, the interference of the vibration of the first mounting part 13 on the sound reception of the microphone 3 can be greatly reduced, and the noise reduction effect of the microphone 3 can be improved.

[0086] In other embodiments, the lower connecting side 1332 can also be a flat or curved surface. The first microphone 31 and the second microphone 32 are disposed on the lower connecting side 1332. Alternatively, the dual microphones 3 can be disposed at the lower narrow surface of the first mounting part 13, which can reduce the interference of vibration on the microphones 3.

[0087] In other embodiments, one or two microphones 3 may also be disposed on the upper connecting side 1331. Similarly, the microphones 3 are disposed on the narrow surface between the inner side 131 and the outer side 132 of the first mounting part 13, which can reduce the interference of vibration on the microphones 3.

[0088] In one embodiment, a bone conduction hearing aid is provided. The difference between this bone conduction hearing aid and the above embodiment is that the placement of the dual microphones 3 is refined.

[0089] In this embodiment, the dual microphones 3 are disposed on different surfaces of the lower connecting side 1332, and the connecting line of the dual microphones 3 is parallel or nearly parallel to the horizontal line when worn, so that the dual microphones 3 can obtain better forward directionality for sound pickup, thereby improving the sound pickup effect in front of the user.

[0090] Please refer to Figures 4 and 5. The first microphone 31 is located on the first lower connecting side 13321, and the second microphone 32 is located on the second lower connecting side 13322. The first projection line of the line connecting the first microphone 31 and the second microphone 32 projected onto the outer side 132 intersects with the second projection line of the upper connecting side 1331 projected onto the outer side 132.

[0091] It should be noted that the intersection of the first projection line and the second projection line includes both direct intersection of the two lines and intersection of the extensions of the two projection lines. When the upper connecting side 1331 is a plane perpendicular to the outer side 132, the second projection line is a straight line; when the upper connecting side 1331 is a curved surface perpendicular to the outer side 132, the second projection line is the line connecting the two ends of the curve projected from the upper connecting side 1331 onto the outer side 132. The second projection line is used to characterize the inclination of the upper connecting side 1331 relative to the horizontal line.

[0092] When worn, the back hanging part 11 will sag, causing the first mounting part 13 to tilt. At this time, the first microphone 31 and the second microphone 32 are set on different sides, which can make the line connecting the first microphone 31 and the second microphone 32 parallel or nearly parallel to the horizontal line, so that the dual microphones 3 can get better forward directionality for sound reception.

[0093] The angle between the line connecting the first microphone 31 and the second microphone 32 and the upper connecting side 1331 can be set according to the degree of sag of the back hanging part 11 when worn. Generally, the sag of the back hanging part 11 will cause the tilt angle θ1 of the first mounting part 13 to be 0° to -30°. Correspondingly, the angle θ2 between the first projection line of the line connecting the first microphone 31 and the second microphone 32 projected onto the outer side 132 and the second projection line of the upper connecting side 1331 projected onto the outer side 132 is 0° to 30°, which can make the line connecting the first microphone 31 and the second microphone 32 parallel or nearly parallel to the horizontal line when worn. For example, if the rear hanging part 11 falls down, the tilt angle θ1 of the first mounting part 13 will be -30°. Correspondingly, the angle θ2 between the first projection line of the line connecting the first microphone 31 and the second projection line of the upper connecting side 1331 on the outer side 132 is 30°. The angle between the first projection line of the line connecting the first microphone 31 and the second projection line of the upper connecting side 1331 on the outer side 132 is opposite in direction and equal in magnitude to the tilt angle of the first mounting part 13. This allows the line connecting the first microphone 31 and the second microphone 32 to be parallel or nearly parallel to the horizontal line when worn.

[0094] In other embodiments, the angle θ2 between the first projection line of the line connecting the first microphone 31 and the second microphone 32 projected onto the outer side 132 and the second projection line of the upper connecting side 1331 projected onto the outer side 132 is 0°~60°, which can accommodate the situation where the back hanging part 11 drops more when worn, thereby ensuring that the line connecting the first microphone 31 and the second microphone 32 is parallel or nearly parallel to the horizontal line when worn.

[0095] In one embodiment, a bone conduction hearing aid is provided. The difference between this bone conduction hearing aid and the above embodiment is that the placement of the dual microphones 3 is refined.

[0096] Please refer to Figures 6 and 7. In this embodiment, the dual microphones 3 are located on the outer side of the symmetrical plane between the inner side 131 and the outer side 132. The symmetrical plane P is the middle plane between the inner side 131 and the outer side 132. The distance between the inner side 131 and the outer side 132 and the symmetrical plane P is equal.

[0097] When a bone conduction hearing aid is worn, the inner surface 131 vibrates and generates sound waves. These sound waves are not only directly transmitted to the connecting surface 133, but also transmitted to the user's head and reflected back to the connecting surface 133. Therefore, the sound waves generated by the inner surface 131 on the connecting surface 133 are actually the superposition of two sound waves. Consequently, on the plane of symmetry P, the sound waves generated by the inner surface 131 are slightly larger than those generated by the outer surface 132. This results in the vibration cancellation surface between the inner surface 131 and the outer surface 132 being located closer to the outer surface 132 on the plane of symmetry P between the inner surface 131 and the outer surface 132. Based on this analysis, the dual microphones 3 are positioned on the lower connecting surface 1332 and slightly outward relative to the plane of symmetry P. That is, the distance between each of the dual microphones 3 and the outer surface 132 is less than the distance between them and the inner surface 131. The dual microphones 3 are closer to the outer surface 132 than the inner surface 131. The distance between the first microphone 131 and the second microphone 132 and the symmetry plane P is 0 mm to 5 mm. For example, the first microphone 131 is located on the symmetry plane P and the distance between the first microphone 131 and the symmetry plane P is 0 mm. The second microphone 132 is located on the outer side of the symmetry plane P and the distance between the second microphone 132 and the symmetry plane P is 5 mm.

[0098] This configuration places the dual microphones 3 on the actual vibration cancellation surface between the inner side 131 and the outer side 132, which can minimize the interference of vibration on the dual microphones 3.

[0099] In other embodiments, the first microphone 31 is disposed on the lower connecting side 1332 and located on the symmetrical plane P between the inner side 131 and the outer side 132, and the second microphone 32 is disposed on the lower connecting side 1332 and is closer to the outer side 132 than the inner side 131. In other words, the second microphone 32 is located on the actual vibration cancellation surface, and the first microphone 31 is located close to the actual vibration cancellation surface, which can also effectively eliminate the interference of vibration on the dual microphones 3.

[0100] In one embodiment, a bone conduction hearing aid is provided. The difference between this bone conduction hearing aid and the above embodiment is that the microphone 3 is configured differently.

[0101] Please refer to Figures 8 to 10. In this embodiment, multiple microphones 3 are disposed on the outer side 132 of the first mounting part 13, and the line connecting the multiple microphones 3 is parallel or approximately parallel to the vibration axis X of the first mounting part 13, so that the amplitude, phase and frequency of the vibration interference received by the multiple microphones 3 are the same. The vibration interference of the dual microphones 3 can be eliminated by a relatively simple algorithm, thereby improving the noise reduction effect of sound reception.

[0102] The outer side 132 may also be provided with a first microphone 31 and a second microphone 32 spaced apart from each other, and the outer side 132 is provided with dual microphones 3.

[0103] The first mounting part 13 is connected to the second mounting part 14 via the ear hook part 12. The second mounting part 14 is equipped with a vibration source speaker 2. The vibration generated by the speaker 2 is transmitted to the first mounting part 13 via the ear hook part 12. Vibration is formed in the first mounting part 13 along the vibration axis X. The vibration axis X in the first mounting part 13 is located at or near the symmetry plane P between the outer side surface 132 and the inner side surface 131.

[0104] The line connecting the first microphone 31 and the second microphone 32 is parallel to the plane of symmetry P between the outer side 132 and the inner side 131, such that the line connecting the first microphone 31 and the second microphone 32 is parallel to the vibration axis X of the first mounting part 13.

[0105] In this embodiment, multiple microphones 3 are disposed on the outer surface 132 of the first mounting portion 13, and the line connecting the multiple microphones 3 is parallel to the vibration axis X within the first mounting portion 13. This arrangement ensures that the amplitude, phase, and frequency of the vibration interference experienced by the multiple microphones 3 are the same, and the vibration interference of the dual microphones 3 can be eliminated by a relatively simple algorithm, thereby improving the noise reduction effect of sound reception.

[0106] In one embodiment, a bone conduction hearing aid is provided. The difference between this bone conduction hearing aid and the above embodiment is that the positions of the multiple microphones 3 are different.

[0107] Referring to Figure 11, in this embodiment, multiple microphones 3 are disposed on different sides of the first mounting portion 13. For example, the first microphone 31 is disposed on the outer side 132 of the first mounting portion 13, and the second microphone 32 is disposed on the connecting side 133 of the first mounting portion 13. The fact that the first microphone 31 and the second microphone 32 are located on different sides of the first mounting portion 13 increases the difference in sound pickup between the first microphone 31 and the second microphone 32, thereby achieving a better noise reduction effect.

[0108] The first microphone 31 is located on the outer side 132 near the front connecting side 1333. The second microphone 32 can be located on either the first lower connecting side 13321 or the second lower connecting side 13322. In particular, if the second microphone 32 is located on the second lower connecting side 13322, the first microphone 31 and the second microphone 32 can be further apart, allowing for a greater difference in sound pickup and thus achieving better noise reduction.

[0109] In this embodiment, multiple microphones 3 are disposed on different sides of the first mounting part 13, so that the differences in sound pickup by multiple microphones 3 can be used to achieve a better noise reduction effect.

[0110] In one embodiment, a bone conduction hearing aid is provided, which, based on the bone conduction hearing aid of the above embodiment, defines the tilt angle of the connection between the two microphones 3.

[0111] In this embodiment, due to the different structures of the ear hook part 12 and the different bending conditions during wearing, the third projection line of the vibration axis X generated in the first mounting part 13 projected onto the outer side surface 132 intersects with the second projection line of the upper connecting side surface 1331 of the first mounting part 13 projected onto the outer side surface 132. The included angle between the third projection line and the second projection line is within the range of +60° to -60°.

[0112] The angle between the first projection line of the connection between the first microphone 31 and the second microphone 32 projected onto the outer side 132 and the second projection line of the upper connecting side 1331 projected onto the outer side 132 is set within the range of +60° to -60°. That is, the connection line between the first microphone 31 and the second microphone 32 is tilted so that the first projection line of the connection line between the first microphone 31 and the second microphone 32 projected onto the outer side 132 can be parallel to the third projection line of the vibration axis X in the first mounting part 13 projected onto the outer side 132. As a result, the vibrations received by the first microphone 31 and the second microphone 32 have the same amplitude, phase and frequency. The vibration interference of the dual microphones 3 can be eliminated by a relatively simple algorithm, thereby improving the noise reduction effect of sound reception.

[0113] In other embodiments, the back hanger 11 may sag when worn, causing the first mounting part 13 to tilt relative to the horizontal line by 0° to -30°. Therefore, preferably, considering that the angle between the two microphones and the horizontal line after the sag is not too large, and that the connection line between the two microphones 3 is as close as possible to the vibration axis X, the angle between the first projection line of the connection line between the first microphone 31 and the second microphone 32 projected onto the outer side 132 and the second projection line of the upper connecting side 1331 projected onto the outer side 132 can be within the range of +60° to -30°. The first projection line of the connection line between the first microphone 31 and the second microphone 32 projected onto the outer side 132 is correspondingly tilted and adapted, so that the first projection line of the connection line between the first microphone 31 and the second microphone 32 projected onto the outer side 132 is parallel or as parallel as possible to the third projection line of the vibration axis X in the first mounting part 13 projected onto the outer side 132.

[0114] It should be noted that the angle between the first projection line of the line connecting the first microphone 31 and the second microphone 32 projected onto the outer side 132 and the second projection line of the upper connecting side 1331 projected onto the outer side 132 is a value within the range of +60° to -30°. This value can be set according to the vibration axis X generated when the bone conduction hearing aid is worn.

[0115] In this embodiment, the first projection line of the line connecting the first microphone 31 and the second microphone 32 projected onto the outer side 132 is parallel to the third projection line of the vibration axis X within the first mounting portion 13 projected onto the outer side 132. This arrangement ensures that the amplitude, phase, and frequency of the vibration interference experienced by the multiple microphones 3 are the same. Vibration interference from the dual microphones 3 can be eliminated using a relatively simple algorithm, thus improving the noise reduction effect of the sound pickup.

[0116] In a preferred embodiment, the angle between the first projection line of the line connecting the first microphone 31 and the second microphone 32 projected onto the outer side 132 and the second projection line of the upper connecting side 1331 projected onto the outer side 132 can be within the range of +30° to -30°. The first projection line of the line connecting the first microphone 31 and the second microphone 32 projected onto the outer side 132 is parallel to the third projection line of the vibration axis X in the first mounting part 13 projected onto the outer side 132, which makes it easier to eliminate interference and improve the noise reduction effect of sound reception.

[0117] In other embodiments, when the bone conduction hearing aid is worn, the backrest 11 naturally falls due to gravity, causing the first mounting part 13 to tilt. At this time, the first projection line of the line connecting the first microphone 31 and the second microphone 32 projected onto the outer side 132 intersects with the second projection line of the upper connecting side 1331 projected onto the outer side 132. This allows the first projection line of the line connecting the first microphone 31 and the second microphone 32 projected onto the outer side 132 to be parallel or nearly parallel to the horizontal line, so that the dual microphones 3 can obtain better forward-facing directional sound reception, and the first projection line of the line connecting the first microphone 31 and the second microphone 32 projected onto the outer side 132 can be closer to being parallel to the third projection line of the vibration axis X of the first mounting part 13 projected onto the outer side 132, thereby improving the noise reduction effect.

[0118] The angle between the first projection line of the line connecting the first microphone 31 and the second microphone 32 projected onto the outer side 132 and the second projection line of the upper connecting side 1331 projected onto the outer side 132 is set according to the degree of sag of the back hanging part 11 when worn. Under normal circumstances, the sag of the back hanging part 11 will cause the first mounting part 13 to tilt by 0° to -30°. Correspondingly, the angle between the line connecting the first microphone 31 and the second microphone 32 and the upper connecting side 1331 is 0° to 30°, which allows the first projection line of the line connecting the first microphone 31 and the second microphone 32 projected onto the outer side 132 to be parallel or nearly parallel to the horizontal line when worn. For example, if the rear hanging part 11 falls, the first mounting part 13 will tilt by -30°. Correspondingly, the angle between the first projection line of the line connecting the first microphone 31 and the second projection line of the upper connecting side 1331 on the outer side 132 is 30°. The angle between the first projection line of the line connecting the first microphone 31 and the second projection line of the upper connecting side 1331 on the outer side 132 is opposite in direction and equal in magnitude to the tilt angle of the first mounting part 13. This allows the first projection line of the line connecting the first microphone 31 and the second microphone 32 on the outer side 132 to be parallel or nearly parallel to the horizontal line when worn.

[0119] In other embodiments, since it is unavoidable to turn one's head or walk while wearing the device, the backrest 11 will inevitably sag to a greater extent during these activities. In this case, a larger angle is set between the first projection line of the connection between the first microphone 31 and the second microphone 32 projected onto the outer side 132 and the second projection line of the upper connecting side 1331 projected onto the outer side 132. This allows the first projection line of the connection between the first microphone 31 and the second microphone 32 projected onto the outer side 132 to be parallel or nearly parallel to the horizontal line, enabling the dual microphones 3 to achieve better forward-facing directional sound pickup, and allowing the first projection line of the connection between the first microphone 31 and the second microphone 32 projected onto the outer side 132 to be closer to being parallel to the vibration axis X of the first mounting part 13, thereby improving the noise reduction effect.

[0120] The angle between the line connecting the first microphone 31 and the second microphone 32 and the upper connecting side 1331 is set according to the degree of sag of the back hanging part 11 when worn. Under normal circumstances, the sag of the back hanging part 11 will cause the first mounting part 13 to tilt by -5° to -35°. Correspondingly, the angle between the first projection line of the line connecting the first microphone 31 and the second projection line of the upper connecting side 1331 on the outer side 132 is 5° to 35°, which makes the first projection line of the line connecting the first microphone 31 and the second microphone 32 on the outer side 132 parallel or nearly parallel to the horizontal line when worn. For example, if the rear hanging part 11 falls, the first mounting part 13 will tilt by -5°. Correspondingly, the angle between the first projection line of the line connecting the first microphone 31 and the second projection line of the upper connecting side 1331 on the outer side 132 is 5°. The angle between the first projection line of the line connecting the first microphone 31 and the second projection line of the upper connecting side 1331 on the outer side 132 is opposite in direction and equal in size to the angle of the first mounting part 13. This allows the first projection line of the line connecting the first microphone 31 and the second microphone 32 on the outer side 132 to be parallel or nearly parallel to the horizontal line when worn.

[0121] In one embodiment, a bone conduction hearing aid is provided, which, based on the bone conduction hearing aid of the above embodiment, defines the spacing between the two microphones 3.

[0122] The distance between the first microphone 31 and the second microphone 32 can be set according to the sound reception requirements. Generally, the distance d between the first microphone 31 and the second microphone 32 can be set to 2 mm to 45 mm, with a preferred range of 2 mm to 30 mm. For example, the distance d between the first microphone 31 and the second microphone 32 can be 2 mm, 10 mm or 30 mm. This distance is beneficial for the combined operation of the two microphones 3, and it is easier to eliminate echo and suppress noise at the algorithm layer, which can improve the noise reduction effect of the dual microphones 3.

[0123] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. A bone conduction hearing aid, characterized in that, include: The support structure (1) includes a back hook (11), an ear hook (12), a first mounting part (13), and a second mounting part (14). The two ends of the back hook (11) are respectively connected to a first mounting part (13), and the first mounting part (13) is connected to the second mounting part (14) through the ear hook (12). The back hook (11) is used to be worn on the back of the user's head, and the ear hook (12) is used to be worn on the upper part of the user's ear. The first mounting part (13) includes an inner side (131) facing the user when worn, an outer side (132) facing away from the user when worn, and a connecting side (133) connecting the inner side (131) and the outer side (132). A speaker (2) is installed in the second mounting part (14), and the speaker (2) is configured to play hearing aid sound signals; Multiple microphones (3) are disposed on the connection side (133), and the microphones (3) are configured to receive sound signals and convert the sound signals into electrical signals.

2. The bone conduction hearing aid device as described in claim 1, characterized in that, The microphone (3) includes at least a first microphone (31) and a second microphone (32), with the first microphone (31) and the second microphone (32) spaced apart.

3. The bone conduction hearing aid device as described in claim 2, characterized in that, The connecting side (133) includes an upper connecting side (1331) facing upward when worn and a lower connecting side (1332) facing downward or backward when worn, and the first microphone (31) and the second microphone (32) are disposed on the lower connecting side (1332).

4. The bone conduction hearing aid device as described in claim 3, characterized in that, The lower connecting side (1332) includes a first lower connecting side (13321) and a second lower connecting side (13322) with a certain included angle. The angle between the first lower connecting side (13321) and the upper connecting side (1331) is smaller than the angle between the second lower connecting side (13321) and the upper connecting side (1331). The second lower connecting side (13322) faces away from the second mounting part (14). The first microphone (31) is disposed on the first lower connecting side (13321), and the second microphone (32) is disposed on the second lower connecting side (13322).

5. The bone conduction hearing aid device as described in claim 3, characterized in that, The lower connecting side (1332) includes a first lower connecting side (13321) and a second lower connecting side (13322) with a certain included angle. The first microphone (31) and the second microphone (32) are disposed on the first lower connecting side (13321), or the first microphone (31) and the second microphone (32) are disposed on the second lower connecting side (13322).

6. The bone conduction hearing aid device as described in any one of claims 3 to 5, characterized in that, There is a symmetrical plane between the outer side (132) and the inner side (131), and the first microphone (31) and the second microphone (32) are located outside the symmetrical plane and / or on the symmetrical plane, respectively.

7. The bone conduction hearing aid device as described in claim 6, characterized in that, The first microphone (31) and / or the second microphone (32) located on the outer side of the symmetry plane are closer to the symmetry plane than the outer side (132).

8. The bone conduction hearing aid device as described in claim 6, characterized in that, The distance between the first microphone (31) and / or the second microphone (32) and the plane of symmetry is 0 mm to 5 mm.

9. The bone conduction hearing aid device as described in any one of claims 3 to 5, characterized in that, The first projection line of the line connecting the first microphone (31) and the second microphone (32) projected onto the outer side (132) is inclined to the second projection line of the upper connecting side (1331) projected onto the outer side (132).

10. The bone conduction hearing aid device as described in claim 9, characterized in that, The angle between the first projection line and the second projection line is 0° to 60°.

11. The bone conduction hearing aid device as described in claim 10, characterized in that, The angle between the first projection line and the second projection line is 0° to 30°.

12. The bone conduction hearing aid device as described in claim 9, characterized in that, The angle between the first projection line and the second projection line is 5° to 65°.

13. The bone conduction hearing aid device as described in claim 12, characterized in that, The angle between the first projection line and the second projection line is 5° to 35°.

14. The bone conduction hearing aid device according to any one of claims 3 to 5, characterized in that, The first projection line is parallel to the horizontal line when the bone conduction hearing aid is worn.

15. The bone conduction hearing aid device as described in claim 2, characterized in that, The distance between the first microphone (31) and the second microphone (32) is 2 mm to 45 mm.

16. A bone conduction hearing aid, characterized in that, include: The support structure (1) includes a back hook (11), an ear hook (12), a first mounting part (13), and a second mounting part (14). The two ends of the back hook (11) are respectively connected to a first mounting part (13), and the first mounting part (13) is connected to the second mounting part (14) through the ear hook (12). The back hook (11) is used to be worn on the back of the user's head, and the ear hook (12) is used to be worn on the upper part of the user's ear. The first mounting part (13) includes an inner side (131) facing the user when worn, an outer side (132) facing away from the user when worn, and a connecting side (133) connecting the inner side (131) and the outer side (132). A speaker (2) is installed in the second mounting part (14), and the speaker (2) is configured to play hearing aid sound signals; Multiple microphones (3) are disposed on the connecting side (133) and the outer side (132), and the microphones (3) are configured to receive sound signals and convert the sound signals into electrical signals.

17. The bone conduction hearing aid device as described in claim 16, characterized in that, The microphone (3) includes at least a first microphone (31) and a second microphone (32), with the first microphone (31) and the second microphone (32) spaced apart.

18. The bone conduction hearing aid device as described in claim 17, characterized in that, The connecting side (133) includes an upper connecting side (1331) facing upward when worn and a lower connecting side (1332) facing downward or backward when worn. The first microphone (31) is disposed on the lower connecting side (1332), and the second microphone (32) is disposed on the outer side (132).

19. The bone conduction hearing aid device as described in claim 18, characterized in that, The lower connecting side (1332) includes a first lower connecting side (13321) and a second lower connecting side (13322) with a certain included angle. The angle between the first lower connecting side (13321) and the upper connecting side (1331) is smaller than the angle between the second lower connecting side (13321) and the upper connecting side (1331). The second lower connecting side (13322) faces away from the second mounting part (14). The first microphone (31) is disposed on the second lower connecting side (13322).

20. The bone conduction hearing aid device as described in claim 18 or 19, characterized in that, There is a symmetrical plane between the outer side (132) and the inner side (131), and the first microphone (31) is located outside the symmetrical plane or on the symmetrical plane.

21. The bone conduction hearing aid device as described in claim 20, characterized in that, The first microphone (31) is closer to the plane of symmetry than the outer side (132).

22. The bone conduction hearing aid device as described in claim 20, characterized in that, The distance between the first microphone (31) and the symmetrical plane is 0 mm to 5 mm.

23. The bone conduction hearing aid device as described in claim 18 or 19, characterized in that, The first projection line of the line connecting the first microphone (31) and the second microphone (32) projected onto the outer side (132) is inclined to the second projection line of the upper connecting side (1331) projected onto the outer side (132).

24. The bone conduction hearing aid device as described in claim 23, characterized in that, The angle between the first projection line and the second projection line is +60°~-60°, +60°~-30°, 0°~30°, or 5°~35°.

25. The bone conduction hearing aid device as described in claim 17, characterized in that, The first projection line is parallel to the horizontal line when the bone conduction hearing aid is worn.

26. A bone conduction hearing aid, characterized in that, include: The support structure (1) includes a back hook (11), an ear hook (12), a first mounting part (13), and a second mounting part (14). The two ends of the back hook (11) are respectively connected to a first mounting part (13), and the first mounting part (13) is connected to the second mounting part (14) through the ear hook (12). The back hook (11) is used to be worn on the back of the user's head, and the ear hook (12) is used to be worn on the upper part of the user's ear. The first mounting part (13) includes an inner side (131) facing the user when worn, an outer side (132) facing away from the user when worn, and a connecting side (133) connecting the inner side (131) and the outer side (132). A speaker (2) is installed in the second mounting part (14), and the speaker (2) is configured to play hearing aid sound signals; Multiple microphones (3) are disposed on the outer side (132), and the multiple microphones (3) are located in a straight line; the microphones (3) are configured to receive sound signals and convert the sound signals into electrical signals.

27. The bone conduction hearing aid device as described in claim 26, characterized in that, There is a plane of symmetry between the outer side (132) and the inner side (131), and the straight line is parallel to the plane of symmetry.

28. The bone conduction hearing aid device as described in claim 26, characterized in that, The connecting side (133) includes an upper connecting side (1331) facing upward when worn and a lower connecting side (1332) facing downward or backward when worn. The first projection line of the straight line projected onto the outer side (132) intersects the second projection line of the upper connecting side (1331) projected onto the outer side (132).

29. The bone conduction hearing aid device as described in claim 28, characterized in that, The angle between the first projection line and the second projection line is +60° to -60°.

30. The bone conduction hearing aid device as described in claim 29, characterized in that, The angle between the first projection line and the second projection line is +60° to -30°.

31. The bone conduction hearing aid device as described in claim 30, characterized in that, The angle between the first projection line and the second projection line is +30° to -30°.

32. The bone conduction hearing aid device as described in claim 31, characterized in that, The angle between the first projection line and the second projection line is 0° to -30° or 5° to 35°.

33. The bone conduction hearing aid device as described in claim 26, characterized in that, The microphone (3) includes at least a first microphone (31) and a second microphone (32), and the distance between the first microphone (31) and the second microphone (32) is 2 mm to 30 mm.

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