Bone conduction hearing aids

Abstract

The bone conduction hearing aid according to the present invention includes a support structure comprising a back portion, an ear hook portion, a first mounting portion, and a second mounting portion, wherein the first mounting portion is connected to both ends of the back portion, and the first mounting portion is connected to the second mounting portion by the ear hook portion; a speaker mounted within the second mounting portion and configured to reproduce a hearing aid audio signal; and a plurality of microphones installed on the connection side, configured to receive an audio signal and convert the audio signal into an electrical signal. In the process of the first mounting portion vibrating, the outer and inner surfaces of the first mounting portion vibrate, and sound waves with matching amplitude and frequency and opposite phase are generated, forming a pair of dipoles, and a sound wave "cancellation" effect is formed on the connection side between the outer and inner surfaces. By installing a plurality of microphones on the connection side of the first mounting portion, interference to the microphone's sound collection due to the vibration of the first mounting portion can be reduced, and the noise reduction effect of the microphone's sound collection can be improved.

Description

Technical Field

[0001] The present invention relates to the field of acoustics, and more specifically, to bone conduction hearing devices.

Background Art

[0002] A bone conduction hearing aid is a device that conducts sound through bones to assist the hearing of the hearing-impaired. A microphone (mic) plays an important role as a device for capturing environmental sound. The quality of the sound collection effect of the microphone determines the auditory experience, safety, and social skills of hearing-impaired patients. The bone conduction hearing aid feeds back external sound to the hearing-impaired patient through vibration, and the vibration of the housing interferes with the sound collection of the microphone to a certain extent, affecting the sound collection of the microphone.

Summary of the Invention

Means for Solving the Problems

[0003] The present invention provides a bone conduction hearing device for solving the problem that the vibration of the housing interferes with the sound collection of the microphone.

[0004] The bone conduction hearing device according to an embodiment includes a support structure including a rear hook portion, an ear hook portion, a first attachment portion, and a second attachment portion. The first attachment portion is connected to both ends of the rear hook portion respectively. The first attachment portion is connected to the second attachment portion by the ear hook portion. The rear hook portion is worn on the rear side of the user's head, the ear hook portion is worn on the upper end of the user's ear, and the first attachment portion includes an inner surface facing the user during wearing, an outer surface facing away from the user during wearing, and a connection side surface connecting the inner surface and the outer surface; a speaker mounted in the second attachment portion and configured to reproduce an amplified sound signal; a plurality of microphones installed on the connection side surface and configured to receive a sound signal and convert the sound signal into an electrical signal.

[0005] In one embodiment, the microphone includes at least a first microphone and a second microphone, and the first microphone and the second microphone are installed with a gap between them.

[0006] In one embodiment, the connection side includes an upper connection side that faces upward when attached and a lower connection side that faces downward or backward when attached, and the first microphone and the second microphone are installed on the lower connection side.

[0007] In one embodiment, the lower connecting side includes a first lower connecting side and a second lower connecting side having a certain 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 installed on the first lower connecting side, and the second microphone is installed on the second lower connecting side.

[0008] In one embodiment, the lower connection side includes a first lower connection side and a second lower connection side having a certain angle, and the first microphone and the second microphone are installed on the first lower connection side or on the second lower connection side.

[0009] In one embodiment, there is a plane of symmetry between the outer surface and the inner surface, and the first microphone and the second microphone are located outside and / or on the plane of symmetry, respectively.

[0010] In one embodiment, the first microphone and / or the second microphone, which are located outside the plane of symmetry, are closer to the plane of symmetry than the outer surface.

[0011] 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.

[0012] In one embodiment, the first projection line projected onto the outer surface of the connection line between the first microphone and the second microphone intersects with the second projection line projected onto the outer surface of the upper connection side.

[0013] In one embodiment, the angle between the first projection line and the second projection line is 0° to 60°.

[0014] In one embodiment, the angle between the first projection line and the second projection line is 0° to 30°.

[0015] In one embodiment, the angle between the first projection line and the second projection line is 5° to 65°.

[0016] In one embodiment, the angle between the first projection line and the second projection line is 5° to 35°.

[0017] In one embodiment, the first projection line is parallel to the horizontal line when the bone conduction hearing aid is worn.

[0018] In one embodiment, the distance between the first microphone and the second microphone is 2 mm to 45 mm.

[0019] A bone conduction hearing aid according to one embodiment is, A support structure comprising a rear attachment portion, ear hooks, a first mounting portion, and a second mounting portion, wherein the first mounting portion is connected to both ends of the rear attachment portion, the first mounting portion is connected to the second mounting portion by the ear hooks, the rear attachment portion is attached to the rear side of the user's head, the ear hooks are attached to the upper ends of the user's ears, and the first mounting portion includes an inner surface facing the user when worn, an outer surface facing away from the user when worn, and a connecting surface connecting the inner surface and the outer surface, A speaker mounted within the second mounting section and configured to reproduce hearing aid audio signals, The system includes a plurality of microphones installed on the connection side and the outer side, each configured to receive an audio signal and convert the audio signal into an electrical signal.

[0020] In one embodiment, the microphone includes at least a first microphone and a second microphone, and the first microphone and the second microphone are installed at an interval.

[0021] In one embodiment, the connection side surface includes an upper connection side surface that faces upward during wearing and a lower connection side surface that faces downward or backward during wearing. The first microphone is installed on the lower connection side surface, and the second microphone is installed on the outer side surface.

[0022] In one embodiment, the lower connection side surface includes a first lower connection side surface and a second lower connection side surface having a certain angle. The angle between the first lower connection side surface and the upper connection side surface is smaller than the angle between the second lower connection side surface and the upper connection side surface. The second lower connection side surface faces away from the second mounting portion, and the first microphone is installed on the second lower connection side surface.

[0023] In one embodiment, there is a symmetry plane between the outer side surface and the inner side surface, and the first microphone is located outside the symmetry plane or on the symmetry plane.

[0024] In one embodiment, the first microphone is closer to the symmetry plane than the outer side surface.

[0025] In one embodiment, the distance between the first microphone and the symmetry plane is 0 mm to 5 mm.

[0026] In one embodiment, a first projection line obtained by projecting the connection line between the first microphone and the second microphone onto the outer side surface intersects a second projection line obtained by projecting the upper connection side surface onto the outer side surface.

[0027] 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°.

[0028] In one embodiment, the first projection line is parallel to the horizontal line when the bone conduction hearing aid is worn.

[0029] In one embodiment, the distance between the first microphone and the second microphone is 2 mm to 30 mm.

[0030] A bone conduction hearing aid according to one embodiment is, A support structure comprising a rear attachment portion, ear hooks, a first mounting portion, and a second mounting portion, wherein the first mounting portion is connected to both ends of the rear attachment portion, the first mounting portion is connected to the second mounting portion by the ear hooks, the rear attachment portion is attached to the rear side of the user's head, the ear hooks are attached to the upper ends of the user's ears, and the first mounting portion includes an inner surface facing the user when worn, an outer surface facing away from the user when worn, and a connecting surface connecting the inner surface and the outer surface, A speaker mounted within the second mounting section and configured to reproduce hearing aid audio signals, The system includes a plurality of microphones mounted on the outer surface and positioned in a straight line parallel to the vibration axis of the first mounting portion, each microphone configured to receive an audio signal and convert the audio signal into an electrical signal.

[0031] In one embodiment, there is a plane of symmetry between the outer surface and the inner surface, and the straight line is parallel to the plane of symmetry.

[0032] In one embodiment, the connecting side includes an upper connecting side that faces upward when installed and a lower connecting side that faces downward or backward when installed, and the first projection line projected onto the outer surface of the straight line intersects with the second projection line projected onto the outer surface of the upper connecting side.

[0033] In one embodiment, the angle between the first projection line and the second projection line is between +60° and -60°.

[0034] In one embodiment, the angle between the first projection line and the second projection line is between +60° and -30°.

[0035] In one embodiment, the angle between the first projection line and the second projection line is between +30° and -30°.

[0036] In one embodiment, the angle between the first projection line and the second projection line is 0° to -30° or 5° to 35°.

[0037] 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. [Effects of the Invention]

[0038] In the bone conduction hearing aid of the above embodiment, when the bone conduction hearing aid provides acoustic feedback to a hearing-impaired patient, it is unavoidable that speaker vibrations are transmitted to the first mounting part. The vibrations of the first mounting part affect the sound collection of the microphone at the first mounting part, causing noise to be generated in the sound collection and increasing the possibility of howling. During the process of the first mounting part vibrating, the outer and inner surfaces of the first mounting part vibrate, and sound waves with matching amplitudes and frequencies and opposite phases are generated, forming a pair of dipoles. A sound wave "cancellation" effect is formed at the connection surface between the outer and inner surfaces. By installing multiple microphones on the connection surface of the first mounting part, interference to the sound collection of the microphones due to the vibrations of the first mounting part can be reduced, and the noise reduction effect of the microphones' sound collection can be improved. [Brief explanation of the drawing]

[0039] [Figure 1] This is a schematic diagram of a bone conduction hearing aid in one embodiment. [Figure 2] This is a schematic diagram of a partial configuration of a bone conduction hearing aid in one embodiment. [Figure 3] This is a schematic diagram of a partial configuration of a bone conduction hearing aid in one embodiment. [Figure 4] This is a schematic diagram showing the wearing of a bone conduction hearing aid in one embodiment. [Figure 5]This is a side view of a bone conduction hearing aid in one embodiment. [Figure 6] This is a schematic diagram of a bone conduction hearing aid in one embodiment. [Figure 7] This is a schematic diagram of a bone conduction hearing aid in one embodiment. [Figure 8] This is a schematic diagram of a bone conduction hearing aid in one embodiment. [Figure 9] This is a schematic diagram of a bone conduction hearing aid in one embodiment. [Figure 10] This is a side view of a bone conduction hearing aid in one embodiment. [Figure 11] This is a schematic diagram of a bone conduction hearing aid in one embodiment. [Modes for carrying out the invention]

[0040] The present invention will be described in more detail below with reference to the drawings, with reference to specific embodiments. Similar elements in different embodiments are denoted by similar reference numerals. The following embodiments provide many detailed descriptions to better understand the present application. However, those skilled in the art will readily understand that some of these features may be omitted or replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not illustrated or described in the specification, in order to avoid obscuring the core of the application by excessive description. Those skilled in the art do not need to describe these related operations in detail. Those skilled in the art can fully understand the related operations based on the description in the specification and general technical knowledge of the art.

[0041] Furthermore, the characteristics, operations, or features described in the specification can be combined in any suitable manner to form various embodiments. In addition, each step or operation in the description of the method can be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the order in the specification and drawings is merely for the purpose of clearly illustrating a particular embodiment and is not necessarily intended to be followed in that order unless specifically stated that a particular order must be followed.

[0042] In this specification, part numbers such as "Part 1," "Part 2," etc., are used solely to distinguish the described subjects and have no order or technical meaning. Unless otherwise specified, "connection" and "linking" in this application include both direct and indirect connections (linking).

[0043] In one embodiment, a bone conduction hearing aid is provided, which is a head-mounted device worn on the two ears and head of a hearing-impaired patient. The head-mounted device has higher wearing stability and is less likely to fall off, allowing the hearing-impaired patient to exercise while wearing the bone conduction hearing aid. In this bone conduction hearing aid, the microphone position has been redesigned and the microphone is placed on the connecting side between the outer and inner surfaces of the mounting part. When vibrations between the outer and inner surfaces of the mounting part are transmitted to the intermediate connecting side, they cancel each other out. In other words, the vibration interference experienced by the microphone located on the connecting side is much smaller than when it is located on the outer or inner surface. By rearranging the microphone position in this way, vibration interference can be significantly reduced, and the noise reduction effect of sound collection can be improved.

[0044] As shown in Figure 1, this bone conduction hearing aid of this embodiment mainly includes a support structure 1, a speaker 2, and a microphone 3.

[0045] The support structure 1 includes a rear-hanging portion 11, an ear hook portion 12, a first mounting portion 13, and a second mounting portion 14. There is one rear-hanging portion 11, and two each of the ear hook portion 12, the first mounting portion 13, and the second mounting portion 14. The first mounting portion 13 is connected to both ends of the rear-hanging portion 11, and the first mounting portion 13 is connected to the second mounting portion 14 by the ear hook portion 12. That is, the second mounting portion 14, ear hook portion 12, first mounting portion 13, rear-hanging portion 11, first mounting portion 13, ear hook portion 12, and second mounting portion 14 are connected in that order, and the ear hook portion 12, the first mounting portion 13, and the second mounting portion 14 connected to both ends of the rear-hanging portion 11 may be installed symmetrically. The rear-hanging portion 11 has an arc-shaped structure that fits the head of the human body and is attached to the back of the user's (hearing-impaired patient's) head. The ear hook portion 12 has an arc-shaped structure that fits the outer auricle, and the ear hook portion 12 is attached to the upper end of the user's ear, while the first attachment portion 13 is attached to the opening of the user's ear canal.

[0046] The entire support structure 1 may be an integrated structure; for example, the support structure 1 may be made of a material such as integrated silica gel. A support structure 1 having an integrated structure has better connection stability, can form a seamless appearance, and is more aesthetically pleasing.

[0047] In other embodiments, the support structure 1 is partially an integrated structure and partially fixed by connections. For example, the ear hooks 12, the first mounting portion 13, and the second mounting portion 14 are integrated structures, and the rear hook portion 11 is fixedly connected to the first mounting portion 13 by methods such as insertion or screw connection. By installing it in this way, the support structure 1 can accommodate users with various head sizes by installing rear hook portions 11 of different lengths and arc angles.

[0048] In this embodiment, the speaker 2 is mounted within the second mounting portion 14, with a portion of the speaker 2 exposed from the second mounting portion 14. The exposed 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 reproduce an audiophilic audio signal; that is, the speaker 2 is used to reproduce sound. One speaker 2 is mounted in each second mounting portion 14, enabling left and right channel audio playback.

[0049] Microphone 3 is configured to receive an audio signal and convert the audio signal into an electrical signal, and is primarily used to collect external sounds for the user.

[0050] Multiple microphones 3 are installed in each first mounting section 13, preferably two microphones 3 are installed in the first mounting section 13. Dual microphones 3 can create a certain difference in sound pickup, making it easier to eliminate interference, and can also achieve directional sound pickup and improve the sound pickup effect. In other embodiments, three or more microphones 3 may be installed in one first mounting section 13.

[0051] In this application, when we say that the microphone 3 is installed on the side of the first mounting portion 13, we mean that a sound collection hole corresponding to the microphone 3 is installed on the side of the first mounting portion 13, and the microphone 3 is located inside the first mounting portion 13 and is close to the sound collection hole.

[0052] The first mounting portion 13 has a substantially rectangular parallelepiped structure and has a housing cavity within it, which can be used to mount components such as a circuit board and a battery. Naturally, components such as a circuit board and a battery may also be mounted in other parts of the support structure 1, for example, in the second mounting portion 14 or the rear mounting portion 11.

[0053] The first mounting portion 13 includes an inner surface 131, an outer surface 132, and a connecting surface 133. When the bone conduction hearing aid is worn, the inner surface 131 faces the user and either contacts the user's head or maintains a small gap with the head, while the outer surface 132 faces away from the user. The outer surface 132 and the inner surface 131 may be installed parallel to each other, the connecting surface 133 connects the inner surface 131 and the outer surface 132, and the connecting surface 133, together with the inner surface 131 and the outer surface 132, constitutes the outer surface of the first mounting portion 13, and the back-hook portion 11 and the ear hook portion 12 are each connected to the connecting surface 133.

[0054] The first mounting portion 13 has a flat structure, and due to its flat structure, when a bone conduction hearing aid is worn, the shape of the first mounting portion 13 fits better to the user's head, and the thickness of the first mounting portion 13 is reduced, so when worn, the first mounting portion 13 fits better to the user's head, does not protrude too much, and is more aesthetically pleasing. The distance between the outer surface 132 and the inner surface 131 is smaller than the length and width of the outer surface 132 and the inner surface 131, and the connecting surface 133 between the outer surface 132 and the inner surface 131 may be called the narrow surface.

[0055] The connecting side 133 includes an upper connecting side 1331 and a lower connecting side 1332. When installed, the upper connecting side 1331 faces upward and the lower connecting side 1332 faces downward. Naturally, the upper connecting side 1331 and the lower connecting side 1332 may face vertically upward or downward, or diagonally upward or diagonally downward, and the lower connecting side 1332 may face backward or diagonally backward.

[0056] The connecting side 133 further includes the front connecting side 1333, which faces forward when worn. The rear connecting side of the connecting side 133 is connected to the rear hook portion 11, which covers the rear connecting side of the connecting side 133, and the ear hook portion 12 is connected to the upper connecting side 1331, which covers a portion of the upper connecting side 1331.

[0057] The upper connecting side 1331 is a single 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 may be parallel or nearly parallel, and there is a certain angle between the first lower connecting side 13321 and the second lower connecting side 13322, and 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 13322 and the upper connecting side 1331, i.e., the second lower connecting side 13322 is installed so as to be inclined downward and rearward, and when installed, the second lower connecting side 13322 faces downward and rearward of the user, and the second lower connecting side 13322 may be called the rear connecting side of the connecting side 133.

[0058] The upper connecting side 1331, the lower connecting side 1332, and the front connecting side 1333 may be curved or arc-shaped surfaces, and the connection points of each side may be installed as arc transitions.

[0059] In this embodiment, the installation of a dual microphone 3 on the first mounting portion 13 is described as an example. The two microphones 3 include a first microphone 31 and a second microphone 32 installed at a distance from each other. The first microphone 31 and the second microphone 32 may be installed on one or both sides of the first lower connection side 13321 and the second lower connection side 13322. For example, as shown in Figure 1, the first microphone 31 is installed on the first lower connection side 13321 and the second microphone 32 is installed on the second lower connection side 13322. Alternatively, as shown in Figure 2, both the first microphone 31 and the second microphone 32 are installed on the first lower connection side 13321. Or, as shown in Figure 3, both the first microphone 31 and the second microphone 32 are installed on the second lower connection side 13322.

[0060] In this embodiment, the advantages of installing the dual microphone 3 on the lower connection side 1332 are as follows: Firstly, it is less likely to be obstructed by the ear and is advantageous in collecting sound from in front of the user; secondly, because the dual microphone 3 is installed in a lower position, it is less likely to be blocked by dust and is particularly less likely to be exposed to water on rainy days.

[0061] In this embodiment, when a bone conduction hearing aid provides acoustic feedback to a hearing-impaired patient, it is unavoidable that vibrations from the speaker 2 are transmitted to the first mounting portion 13. The vibrations of the first mounting portion 13 interfere with the sound collection of the microphone 3 on the first mounting portion 13, causing noise to be generated in the sound collection and increasing the possibility of howling. During the process of the first mounting portion 13 vibrating, the outer surface 132 and inner surface 131 of the first mounting portion 13 vibrate, and sound waves with matching amplitude and frequency but opposite phase are generated, forming a pair of dipoles. This creates a sound wave "cancellation" effect on the connecting surface 133 between the outer surface 132 and the inner surface 131. By installing multiple microphones 3 on the connecting surface 133 of the first mounting portion 13, and in particular by positioning the multiple microphones 3 on the symmetrical plane between the inner surface 131 and the outer surface 132, interference from the vibrations of the first mounting portion 13 to the sound collection of the microphones 3 can be significantly reduced, and the noise reduction effect of the sound collection of the microphones 3 can be improved.

[0062] In other embodiments, the lower connection side surface 1332 may be a single plane or arcuate surface, and the first microphone 31 and the second microphone 32 are mounted on the lower connection side surface 1332. By mounting the dual microphone 3 at the narrow surface position at the lower end of the first mounting portion 13, interference to the sound collection of the microphone 3 due to vibration can be reduced.

[0063] In other embodiments, one or two microphones 3 may be mounted on the upper connection side surface 1331, and similarly, by mounting the microphones 3 on the narrow surface between the inner surface 131 and the outer surface 132 of the first mounting portion 13, interference to sound collection by the microphones 3 due to vibration can be reduced.

[0064] In one embodiment, a bone conduction hearing aid is provided, and the difference between this bone conduction hearing aid and the above embodiment is that the installation position of the dual microphone 3 is subdivided.

[0065] In this embodiment, the dual microphones 3 are mounted on different sides of the lower connection side 1332, and the connection wires of the dual microphones 3 are parallel or nearly parallel to the horizontal line when mounted. As a result, the dual microphones 3 can obtain better forward sound pickup directivity, improving the sound pickup effect for the user's voice from in front.

[0066] As shown in Figures 4 and 5, the first microphone 31 is installed on the first lower connection side 13321, and the second microphone 32 is installed on the second lower connection side 13322. The first projection line projected onto the outer surface 132 of the connection line between the first microphone 31 and the second microphone 32 intersects with the second projection line projected onto the outer surface 132 of the upper connection side 1331.

[0067] The intersection of the first projection line and the second projection line includes both the direct intersection of the two lines and the intersection of the extensions of the two projection lines. When the upper connecting surface 1331 is a plane perpendicular to the outer surface 132, the second projection line is a straight line. When the upper connecting surface 1331 is a curved surface perpendicular to the outer surface 132, the second projection line is the connecting line at both ends of the curve projected onto the outer surface 132 of the upper connecting surface 1331. The second projection line is used to represent the inclination of the upper connecting surface 1331 with respect to the horizontal line.

[0068] When attached, the rear attachment part 11 may fall off, causing the first mounting part 13 to tilt. In this case, the first microphone 31 and the second microphone 32 are mounted on different sides, and the connecting wires between the first microphone 31 and the second microphone 32 can be made parallel or nearly parallel to the horizontal line, allowing the dual microphone 3 to obtain better forward-facing sound pickup directivity.

[0069] The angle between the connecting wire between the first microphone 31 and the second microphone 32 and the upper connecting side surface 1331 may be set based on the degree to which the rear attachment part 11 falls when mounted. Generally, when the rear attachment part 11 falls, the inclination angle θ1 of the first mounting part 13 becomes 0° to -30°, and correspondingly the angle θ2 between the first projection line projected onto the outer surface surface 132 of the connecting wire between the first microphone 31 and the second microphone 32 and the second projection line projected onto the outer surface 132 of the upper connecting side surface 1331 becomes 0° to 30°, so that when mounted, the connecting wire between the first microphone 31 and the second microphone 32 is parallel or nearly parallel to the horizontal line. For example, if the rear attachment part 11 falls off, the inclination angle θ1 of the first mounting part 13 becomes -30°. Correspondingly, the angle θ2 between the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second microphone 32 and the second projection line projected onto the outer surface 132 of the upper connecting surface 1331 becomes 30°. The angle between the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second projection line projected onto the outer surface 132 of the upper connecting surface 1331 and the inclination angle of the first mounting part 13 are opposite in direction and the same in magnitude. As a result, when mounted, the connecting wire between the first microphone 31 and the second microphone 32 is parallel or nearly parallel to the horizontal line.

[0070] In other embodiments, the angle θ2 between the first projection line projected onto the outer surface 132 of the connection line between the first microphone 31 and the second microphone 32, and the second projection line projected onto the outer surface 132 of the upper connection side 1331, is 0° to 60°, which is suitable for cases where the degree of the rear attachment part 11 falls off is greater when attached, and furthermore, it is ensured that the connection line between the first microphone 31 and the second microphone 32 is parallel or nearly parallel to the horizontal line when attached.

[0071] In one embodiment, a bone conduction hearing aid is provided, and the difference between this bone conduction hearing aid and the above embodiment is that the installation position of the dual microphone 3 is subdivided.

[0072] As shown in Figures 6 and 7, in this embodiment, the dual microphone 3 is located outside the plane of symmetry between the inner surface 131 and the outer surface 132, and the plane of symmetry P is an intermediate surface between the inner surface 131 and the outer surface 132, with equal distances between the inner surface 131, the outer surface 132 and the plane of symmetry P.

[0073] 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 connection surface 133, but are also transmitted to the user's head and reflected back to the connection surface 133. In reality, the sound waves generated on the connection surface 133 by the inner surface 131 are a superposition of two sound waves. As a result, on the plane of symmetry P, the sound waves generated on the inner surface 131 are slightly larger than the sound waves generated on the outer surface 132. Consequently, the vibration cancellation plane between the inner surface 131 and the outer surface 132 is located on the plane of symmetry P between the inner surface 131 and the outer surface 132, closer to the outer surface 132. Based on this analysis, the dual microphones 3 are positioned on the lower connection surface 1332, closer to the outer surface P with respect to the plane of symmetry P. That is, the distance between each of the dual microphones 3 and the outer surface 132 is smaller than the distance between them and the inner surface 131, so that the dual microphones 3 are closer to the outer surface 132 than to the inner surface 131. The distance between the first microphone 131 and the second microphone 132 and the plane of symmetry P is 0 mm to 5 mm. For example, the first microphone 131 is located on the plane of symmetry P, and the distance between the first microphone 131 and the plane of symmetry P is 0 mm. The second microphone 132 is positioned slightly outward from the plane of symmetry P, and the distance between the second microphone 132 and the plane of symmetry P is 5 mm.

[0074] By installing them in this manner, the dual microphones 3 are positioned on the actual vibration cancellation surface between the inner surface 131 and the outer surface 132, thereby minimizing the effects of vibration-induced interference on the dual microphones 3.

[0075] In other embodiments, the first microphone 31 is mounted on the lower connection side 1332 and located on the plane of symmetry P between the inner side 131 and the outer side 132, and the second microphone 32 is mounted on the lower connection side 1332 and is closer to the outer side 132 than to the inner side 131. In other words, the second microphone 32 is located on the actual vibration-removing surface, and the first microphone 31 is located in a position close to the actual vibration-removing surface, which can also effectively remove the effects of vibration interference on the dual microphone 3.

[0076] In one embodiment, a bone conduction hearing aid is provided, and the difference between this bone conduction hearing aid and the above embodiment is that the placement of the microphone 3 is different.

[0077] As shown in Figures 8 to 10, in this embodiment, multiple microphones 3 are installed on the outer surface 132 of the first mounting portion 13, and the connecting wires of the multiple microphones 3 are parallel or nearly parallel to the vibration axis X of the first mounting portion 13. As a result, the amplitude, phase, and frequency of vibration interference received by the multiple microphones 3 are all the same, and vibration interference of the dual microphones 3 can be eliminated by a simple algorithm, improving the noise reduction effect of sound collection.

[0078] A first microphone 31 and a second microphone 32 may be installed on the outer surface 132, spaced apart from each other, thus providing a dual microphone 3 on the outer surface 132.

[0079] The first mounting portion 13 is connected to the second mounting portion 14 by the ear hook portion 12, and a speaker 2, which serves as a vibration source, is attached to the second mounting portion 14. The vibrations generated by the speaker 2 are transmitted to the first mounting portion 13 by the ear hook portion 12, and the first mounting portion 13 is formed to vibrate along the vibration axis X, and the vibration axis X within the first mounting portion 13 is located on or near the plane of symmetry P between the outer surface 132 and the inner surface 131.

[0080] The connecting wire between the first microphone 31 and the second microphone 32 is parallel to the plane of symmetry P between the outer surface 132 and the inner surface 131, and thereafter, the connecting wire between the first microphone 31 and the second microphone 32 is parallel to the vibration axis X of the first mounting portion 13.

[0081] In this embodiment, multiple microphones 3 are mounted on the outer surface 132 of the first mounting portion 13, and the connecting wires of the multiple microphones 3 are parallel to the vibration axis X within the first mounting portion 13. By mounting them in this manner, the amplitude, phase, and frequency of vibration interference received by the multiple microphones 3 are all the same, and vibration interference of the dual microphones 3 can be eliminated by a simple algorithm, thereby improving the noise reduction effect of sound collection.

[0082] In one embodiment, a bone conduction hearing aid is provided, and the difference between this bone conduction hearing aid and the above embodiment is that the placement of the multiple microphones 3 is different.

[0083] As shown in Figure 11, in this embodiment, the multiple microphones 3 are installed on different sides of the first mounting portion 13. For example, the first microphone 31 is installed on the outer side 132 of the first mounting portion 13, and the second microphone 32 is installed on the connecting side 133 of the first mounting portion 13. By positioning the first microphone 31 and the second microphone 32 on different sides of the first mounting portion 13, the difference in sound collection between the first microphone 31 and the second microphone 32 can be increased, thereby achieving a better noise reduction effect.

[0084] The first microphone 31 is positioned close to the front connection side 1333 of the outer side 132, and the second microphone 32 may be installed on the first lower connection side 13321 or the second lower connection side 13322. In particular, if the second microphone 32 is installed on the second lower connection side 13322, there can be a greater distance between the first microphone 31 and the second microphone 32, and a better noise reduction effect can be achieved by creating a greater difference in sound pickup between the first microphone 31 and the second microphone 32.

[0085] In this embodiment, multiple microphones 3 are installed on different sides of the first mounting portion 13, and by creating differences in the sound collection of the multiple microphones 3, a better noise reduction effect can be achieved.

[0086] In one embodiment, a bone conduction hearing aid is provided, and based on the bone conduction hearing aid of the above embodiment, the inclination angle of the connecting wire between the dual microphones 3 is limited.

[0087] In this embodiment, depending on the structure of the ear hook portion 12 and the bending conditions when worn, the third projection line projected onto the outer surface 132 of the vibration axis X generated within the first mounting portion 13 intersects with the second projection line projected onto the outer surface 132 of the upper connecting side 1331 of the first mounting portion 13, and the angle between the third projection line and the second projection line is within the range of +60° to -60°.

[0088] The angle between the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second microphone 32, and the second projection line projected onto the outer surface 132 of the upper connecting surface 1331, is set within the range of +60° to -60°. That is, by setting the connecting wire between the first microphone 31 and the second microphone 32 to be inclined, the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second microphone 32 is parallel to the third projection line projected onto the outer surface 132 of the vibration axis X inside the first mounting part 13. Furthermore, the vibrations received by the first microphone 31 and the second microphone 32 have the same amplitude, phase, and frequency, and vibration interference between the dual microphones 3 can be eliminated by a simple algorithm, improving the noise reduction effect of sound collection.

[0089] In other embodiments, when the rear attachment part 11 is attached, it may fall, and as a result of this fall, the first mounting part 13 may tilt 0° to -30° with respect to the horizontal line. Therefore, preferably, considering that the angle between the directivity of the two microphones and the horizontal line is not too large after attachment and fall, and that the connecting wires of the two microphones 3 are brought as close as possible to the vibration axis X, the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second microphone 32, and the upper connecting side The angle with respect to the second projection line projected onto the outer surface 132 of 1331 may be within the range of +60° to -30°, and the first projection line projected onto the outer surface 132 of the connecting line between the first microphone 31 and the second microphone 32 is inclined to fit accordingly, so that the first projection line projected onto the outer surface 132 of the connecting line between the first microphone 31 and the second microphone 32 is parallel to or as parallel as possible to the third projection line projected onto the outer surface 132 of the vibration axis X in the first mounting part 13.

[0090] Furthermore, the angle between the first projection line projected onto the outer surface 132 of the connection line between the first microphone 31 and the second microphone 32, and the second projection line projected onto the outer surface 132 of the upper connection surface 1331, is a single value within the range of +60° to -30°, and this value may be set based on the vibration axis X generated when the bone conduction hearing aid is worn.

[0091] In this embodiment, the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second microphone 32 is parallel to the third projection line projected onto the outer surface 132 of the vibration axis X inside the first mounting portion 13. By installing in this manner, the amplitude, phase, and frequency of vibration interference received by the multiple microphones 3 are all the same, and vibration interference of the dual microphones 3 can be eliminated by a simple algorithm, thereby improving the noise reduction effect of sound collection.

[0092] In one preferred embodiment, the angle between the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second microphone 32 and the second projection line projected onto the outer surface 132 of the upper connecting surface 1331 may be within the range of +30° to -30°, and the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second microphone 32 is parallel to the third projection line projected onto the outer surface 132 of the vibration axis X in the first mounting portion 13, thereby easily achieving interference rejection and improving the noise reduction effect of sound collection.

[0093] In other embodiments, when the bone conduction hearing aid is worn, the back portion 11 falls naturally due to gravity, causing the first mounting portion 13 to tilt. At this time, the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second microphone 32 intersects with the second projection line projected onto the outer surface 132 of the upper connecting portion 1331. This makes it possible to achieve that the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second microphone 32 is parallel or nearly parallel to the horizontal line, allowing the dual microphones 3 to obtain better forward sound collection directivity. Furthermore, the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second microphone 32 is nearly parallel to the third projection line projected onto the outer surface 132 of the vibration axis X of the first mounting portion 13, thereby improving the noise reduction effect.

[0094] The angle between the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second microphone 32, and the second projection line projected onto the outer surface 132 of the upper connecting surface 1331, is set based on the degree to which the rear attachment part 11 falls when mounted. Generally, the rear attachment part 11 falls, causing the first mounting part 13 to tilt from 0° to -30°. In response, the angle between the connecting wire between the first microphone 31 and the second microphone 32 and the upper connecting surface 1331 becomes from 0° to 30°, and as a result, the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second microphone 32 when mounted is parallel to or nearly parallel to the horizontal line. For example, if the rear attachment part 11 falls off, the first mounting part 13 will tilt by -30°. Correspondingly, the angle between the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second microphone 32 and the second projection line projected onto the outer surface 132 of the upper connecting surface 1331 will be 30°. The angle between the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second projection line projected onto the outer surface 132 of the upper connecting surface 1331 and the tilt angle of the first mounting part 13 are opposite in direction and the same in magnitude. As a result, when mounted, the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second microphone 32 is parallel or nearly parallel to the horizontal line.

[0095] In other embodiments, it is difficult to avoid situations where the wearer turns their head or walks around while wearing the device, and in these movement scenarios, the rear attachment portion 11 is inevitably prone to falling off to a greater extent. In this case, a larger angle can be set between the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second microphone 32 and the second projection line projected onto the outer surface 132 of the upper connecting surface 1331. This makes it possible to achieve that the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second microphone 32 is parallel or nearly parallel to the horizontal line, allowing the dual microphone 3 to obtain better forward-facing sound collection directivity. Furthermore, the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second microphone 32 is nearly parallel to the vibration axis X of the first mounting portion 13, thereby improving the noise reduction effect.

[0096] The angle between the connecting wire between the first microphone 31 and the second microphone 32 and the upper connecting side surface 1331 is set based on the degree to which the rear attachment part 11 falls when mounted. Generally, when the rear attachment part 11 falls, the first mounting part 13 tilts by -5° to -35°, and correspondingly the angle between the first projection line projected onto the outer surface surface 132 of the connecting wire between the first microphone 31 and the second microphone 32 and the second projection line projected onto the outer surface 132 of the upper connecting side surface 1331 becomes 5° to 35°. As a result, when mounted, the first projection line projected onto the outer surface surface 132 of the connecting wire between the first microphone 31 and the second microphone 32 is parallel to or nearly parallel to the horizontal line. For example, if the rear attachment part 11 falls off, the first mounting part 13 will tilt by -5°. Correspondingly, the angle between the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second microphone 32 and the second projection line projected onto the outer surface 132 of the upper connecting surface 1331 will be 5°. The angle between the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second projection line projected onto the outer surface 132 of the upper connecting surface 1331 and the angle of the first mounting part 13 are opposite in direction and the same in magnitude. As a result, when mounted, the first projection line projected onto the outer surface 132 of the connecting wire between the first microphone 31 and the second microphone 32 is parallel or nearly parallel to the horizontal line.

[0097] In one embodiment, a bone conduction hearing aid is provided, and the distance between the dual microphones 3 is limited based on the bone conduction hearing aid of the above embodiment.

[0098] The distance between the first microphone 31 and the second microphone 32 may be set according to the sound collection requirements. Generally, the distance d between the first microphone 31 and the second microphone 32 may 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 may be 2 mm, 10 mm, or 30 mm. This distance is advantageous for the combined operation of the dual microphones 3, facilitating echo cancellation, noise suppression, etc., in the algorithm layer, and improving the noise reduction effect of sound collection by the dual microphones 3.

[0099] The present invention has been explained using specific examples above, but these are merely to facilitate understanding of the invention and do not limit it. Those skilled in the art can make several simple inferences, modifications, or substitutions based on the concept of the present invention. [Explanation of Symbols]

[0100] 1 Support structure 11 Rear attachment part 12 Ear hooks 13. First mounting section 131 Inner surface 132 External surface 133 Connection side 1331 Upper connection side 1332 Lower connection side 13321 First lower connection side 13322 Second lower connection side 1333 Front connection side 14. Second mounting section 2 speakers 3 Microphone 31. First Microphone 32. Second microphone P is a plane of symmetry. X vibration axis

Claims

1. Support structure (1) comprising a rear attachment portion (11), ear hook portions (12), a first mounting portion (13), and a second mounting portion (14), wherein the first mounting portion (13) is connected to both ends of the rear attachment portion (11), the first mounting portion (13) is connected to the second mounting portion (14) by the ear hook portion (12), the rear attachment portion (11) is attached to the rear side of the user's head, the ear hook portion (12) is attached to the upper end of the user's ears, and the first mounting portion (13) comprises an inner surface (131) that faces the user when attached, an outer surface (132) that faces away from the user when attached, and a connecting surface (133) that connects the inner surface (131) and the outer surface (132), A speaker (2) is mounted within the second mounting portion (14) and configured to reproduce a hearing aid audio signal, A bone conduction hearing aid comprising a plurality of microphones (3) installed on the connection side (133), each microphone (3) configured to receive an audio signal and convert the audio signal into an electrical signal.

2. The bone conduction hearing aid according to claim 1, characterized in that the microphone (3) includes at least a first microphone (31) and a second microphone (32), and the first microphone (31) and the second microphone (32) are installed with a gap between them.

3. The bone conduction hearing aid according to claim 2, characterized in that the connection side (133) includes an upper connection side (1331) that faces upward when worn and a lower connection side (1332) that faces downward or backward when worn, and the first microphone (31) and the second microphone (32) are installed on the lower connection side (1332).

4. The bone conduction hearing aid according to claim 3, characterized in that the lower connecting side surface (1332) includes a first lower connecting side surface (13321) and a second lower connecting side surface (13322) having a certain angle, the angle between the first lower connecting side surface (13321) and the upper connecting side surface (1331) is smaller than the angle between the second lower connecting side surface (13321) and the upper connecting side surface (1331), the second lower connecting side surface (13322) faces away from the second mounting portion (14), the first microphone (31) is installed on the first lower connecting side surface (13321), and the second microphone (32) is installed on the second lower connecting side surface (13322).

5. The bone conduction hearing device according to claim 3, characterized in that the lower connecting side surface (1332) includes a first lower connecting side surface (13321) and a second lower connecting side surface (13322) having a certain angle, and the first microphone (31) and the second microphone (32) are installed on the first lower connecting side surface (13321) or on the second lower connecting side surface (13322).

6. A bone conduction hearing aid according to any one of claims 3 to 5, characterized in that it has a plane of symmetry between the outer surface (132) and the inner surface (131), and the first microphone (31) and the second microphone (32) are located outside and / or on the plane of symmetry, respectively.

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

8. The bone conduction hearing aid according to 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 device according to any one of claims 3 to 5, characterized in that the first projection line projected onto the outer surface (132) of the connection line between the first microphone (31) and the second microphone (32) and the second projection line projected onto the outer surface (132) of the upper connection surface (1331) are inclined.

10. The bone conduction hearing aid according to 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 according to 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 according to 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 according to 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 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 device is worn.

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

16. Support structure (1) comprising a rear attachment portion (11), ear hook portions (12), a first mounting portion (13), and a second mounting portion (14), wherein the first mounting portion (13) is connected to both ends of the rear attachment portion (11), the first mounting portion (13) is connected to the second mounting portion (14) by the ear hook portion (12), the rear attachment portion (11) is attached to the rear side of the user's head, the ear hook portion (12) is attached to the upper end of the user's ears, and the first mounting portion (13) comprises an inner surface (131) that faces the user when attached, an outer surface (132) that faces away from the user when attached, and a connecting surface (133) that connects the inner surface (131) and the outer surface (132), A speaker (2) is mounted within the second mounting portion (14) and configured to reproduce a hearing aid audio signal, A bone conduction hearing aid comprising a plurality of microphones (3) installed on the connection side (133) and the outer side (132), the plurality of microphones (3) configured to receive an audio signal and convert the audio signal into an electrical signal.

17. The bone conduction hearing aid according to claim 16, characterized in that the microphone (3) includes at least a first microphone (31) and a second microphone (32), and the first microphone (31) and the second microphone (32) are installed with a gap between them.

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

19. The bone conduction hearing aid according to claim 18, characterized in that the lower connecting side surface (1332) includes a first lower connecting side surface (13321) and a second lower connecting side surface (13322) having a certain angle, the angle between the first lower connecting side surface (13321) and the upper connecting side surface (1331) is smaller than the angle between the second lower connecting side surface (13321) and the upper connecting side surface (1331), the second lower connecting side surface (13322) faces away from the second mounting portion (14), and the first microphone (31) is installed on the second lower connecting side surface (13322).

20. The bone conduction hearing aid according to claim 18 or 19, characterized in that it has a plane of symmetry between the outer surface (132) and the inner surface (131), and the first microphone (31) is located outside or on the plane of symmetry.

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

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

23. The bone conduction hearing device according to claim 18 or 19, characterized in that the first projection line projected onto the outer surface (132) of the connection line between the first microphone (31) and the second microphone (32) and the second projection line projected onto the outer surface (132) of the upper connection surface (1331) are inclined.

24. The bone conduction hearing aid according to claim 23, characterized in that 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°.

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

26. Support structure (1) comprising a rear attachment portion (11), ear hook portions (12), a first mounting portion (13), and a second mounting portion (14), wherein the first mounting portion (13) is connected to both ends of the rear attachment portion (11), the first mounting portion (13) is connected to the second mounting portion (14) by the ear hook portion (12), the rear attachment portion (11) is attached to the rear side of the user's head, the ear hook portion (12) is attached to the upper end of the user's ears, and the first mounting portion (13) comprises an inner surface (131) that faces the user when attached, an outer surface (132) that faces away from the user when attached, and a connecting surface (133) that connects the inner surface (131) and the outer surface (132), A speaker (2) is mounted within the second mounting portion (14) and configured to reproduce a hearing aid audio signal, A bone conduction hearing aid comprising a plurality of microphones (3) installed on the outer surface (132) and positioned in a straight line, each microphone (3) configured to receive an audio signal and convert the audio signal into an electrical signal.

27. The bone conduction hearing aid according to claim 26, characterized in that it has a plane of symmetry between the outer surface (132) and the inner surface (131), and the straight line is parallel to the plane of symmetry.

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

29. The bone conduction hearing aid according to 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 according to 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 according to 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 according to 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 according to 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.

Images