Hearing aid microphone structure and hearing aid

Abstract

Hearing aid microphone structure and hearing aid. The hearing aid microphone structure includes: a microphone arranged on the front surface of the first end plate in the housing, the first end plate is part of the flexible circuit board, and the first end plate has a sound transmission hole; a sound-conducting foam arranged on the rear surface of the first end plate, the sound-conducting foam has a sound-conducting hole, and the sound-conducting hole and the sound transmission hole are connected; a dust-proof net arranged on the sound-conducting foam, the dust-proof net has a peripheral portion and a net portion, and the net portion blocks the sound-conducting hole. The hearing aid microphone structure is not only compact in structure, but also has good external sound reception effect and good dust-proof effect.

Description

Technical Field

[0001] The present invention relates to the field of hearing aids, and in particular to a hearing aid microphone structure and a hearing aid. Background Art

[0002] Hearing aids are usually installed in or behind the user's ear to amplify sound for the user. Some common types of hearing aids include behind-the-ear (BTE) hearing aids, in-the-ear (ITE) hearing aids, in-the-canal (ITC) hearing aids, and completely in-the-canal (CIC) hearing aids.

[0003] Completely in-ear hearing aids have the advantages of small size and high concealment. They do not require external circuit wires and sound transmission tubes, and can meet the aesthetic and psychological needs of the deaf.

[0004] For more information about existing hearing aids, please refer to Chinese patents with authorization announcement numbers CN205622877U and CN203167211U. Summary of the invention

[0005] In order to further improve the hearing aid, the present invention provides a new complete in-ear canal hearing aid.

[0006] The present invention is implemented as follows: a hearing aid microphone structure is provided, including: a microphone arranged on the front surface of a first end plate in a shell, the first end plate is part of a flexible circuit board, and the first end plate has a sound transmission hole; a sound-conducting foam arranged on the rear surface of the first end plate, the sound-conducting foam has a sound-conducting hole, and the sound-conducting hole and the sound transmission hole are connected; a dust-proof net arranged on the sound-conducting foam, the dust-proof net has a peripheral portion and a net portion, and the net portion blocks the sound-conducting hole.

[0007] Optionally, the flexible circuit board also has a second end plate and an annular portion bent into a circular shape, a first connecting section is provided between the first end plate and the annular portion, a second connecting section is provided between the second end plate and the annular portion, the first connecting section and the second connecting section intersect, and the intersection becomes the intersection position of the annular portion.

[0008] Optionally, the hearing aid microphone structure may further include a bracket having an opening, the first connecting section and the second connecting section pass through the opening and are clamped together by the bracket, and the first end plate and the second end plate are fixed on the bracket.

[0009] Optionally, the hearing aid microphone structure may further include a rear cover, the rear section of the housing has a rear opening, and the rear cover covers the rear opening.

[0010] Optionally, the back cover is assembled with the bracket, and the microphone, the sound-conducting foam and the dust-proof net are located between the back cover and the bracket; the first end plate and the second end plate are also located between the back cover and the bracket.

[0011] The present invention also provides a hearing aid, comprising the above-mentioned hearing aid microphone structure.

[0012] The hearing aid microphone structure of the present invention:

[0013] It includes a microphone arranged on the front surface of the first end plate in the shell, the first end plate is a part of the flexible circuit board, and the first end plate has a sound transmission hole; a sound-conducting foam arranged on the rear surface of the first end plate, the sound-conducting foam has a sound-conducting hole, and the sound-conducting hole and the sound transmission hole are connected; a dust-proof net arranged on the sound-conducting foam, the dust-proof net has a peripheral portion and a net portion, and the net portion blocks the sound-conducting hole. At this time, the microphone and the sound-conducting foam sandwich the first end plate in the middle, ensuring that the surface of the microphone that receives sound faces outward through the sound transmission hole. The sound-conducting foam can make the sound reception effect better, and the cooperation of the sound-conducting foam and the dust-proof net ensures that under the dust-proof protection, the sound can be better transmitted to the microphone. Therefore, the hearing aid microphone structure is not only compact in structure, but also has a good effect in receiving external sounds and a good dust-proof effect.

[0014] The relevant structural design of the microphone structure is regular. The sound-conducting foam and the dust-proof net cooperate to protect the microphone. Combined with the first end plate, the bracket and the back cover, it ensures that the microphone is located at the back of the hearing aid to better obtain external sounds and make the entire hearing aid small in size. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a hearing aid explosion;

[0016] Figure 2 This is the first angle diagram of the hearing aid;

[0017] Figure 3 This is a second angle diagram of the hearing aid;

[0018] Figure 4 is a schematic diagram of the first cross-sectional structure of a hearing aid;

[0019] Figure 5 is a schematic diagram of the second cross-sectional structure of a hearing aid;

[0020] Figure 6 This is a schematic diagram of the first angle of the shell;

[0021] Figure 7 This is a second angle diagram of the shell;

[0022] Figure 8 This is a third angle diagram of the shell;

[0023] Fig. 9 This is a fourth angle diagram of the shell;

[0024] Fig.10 This is the first angle diagram of the flexible circuit board;

[0025] Fig.11 This is a second angle diagram of the flexible circuit board;

[0026] Fig.12 It is a schematic diagram of the corresponding structure of the flexible circuit board assembly;

[0027] Fig.13 It is a schematic diagram of the assembly structure of a flexible circuit board, a bracket, a conductive contact sheet and a microphone;

[0028] Fig.14 yes Fig.13 Schematic diagram of the structure of continuing to assemble the sound-conducting foam and the switch;

[0029] Fig.15 yes Fig.14 Schematic diagram of the structure with dust screen installed on the structure;

[0030] Fig.16 yes Fig.15 The schematic diagram of the structure of the rear cover is further assembled;

[0031] Fig.17 is a schematic diagram of a hearing aid cutaway at the microphone location;

[0032] Fig.18 yes Fig.17 An enlarged schematic diagram of the cross-section structure is shown. DETAILED DESCRIPTION

[0033] The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0034] The embodiment of the present invention provides a complete in-ear hearing aid. Hearing aids generally include symmetrical left-ear hearing aids and right-ear hearing aids. This embodiment only describes the left-ear hearing aid. The right-ear hearing aid has a symmetrical structure with the left-ear hearing aid and also falls within the protection scope of the present invention.

[0035] The hearing aid of this embodiment includes a microphone structure, so this embodiment also provides a hearing aid microphone structure.

[0036] Figure 1 The exploded view shows that the hearing aid includes a housing 10 (10 is marked at Figure 6 and Figure 7), receiver 21, chip 22, flexible circuit board 31, battery 32, conductive contact sheet 33, microphone 41, switch 42, bracket 43, front cover 5, cerumen cap 6, earplug 7, back cover 8 and removal line 9. Flexible circuit board 31 includes solder pad 311. Microphone 41 is matched with sound-conducting foam 411 and dust-proof net 412. Switch 42 is matched with button 421. Front cover 5 has front through hole 50, and back cover 8 has button hole 81, wire hole 82 and sound receiving port 83.

[0037] In this embodiment, the housing 10 is divided into a front section 11 and a rear section 12, and further divided into a first housing 10A and a second housing 10B. Figure 1 The housing 10 is divided into a first housing 10A and a second housing 10B. The first housing 10A includes a first front section 11A and a first rear section 12A connected to each other, and the second housing 10B includes a second front section 11B and a second rear section 12B connected to each other. Figure 6 and Figure 7 The housing 10 includes a front section 11 and a rear section 12 . The front section 11 includes a first front section 11A and a second front section 11B. The rear section 12 includes a first rear section 12A and a second rear section 12B.

[0038] refer to Figure 2 and Figure 3 The overall appearance of the hearing aid is as follows: Figure 2 and Figure 3 At this time, the first housing 10A and the second housing 10B are assembled together. Figure 2 and Figure 3 The lower end of the middle structure corresponds to the front end of the hearing aid, and the upper end of the structure corresponds to the back end of the hearing aid. Figures 1 to 5 It can be seen that the front cover 5 is arranged at the front end of the first front section 11A and the second front section 11B, and the earplug 7 is assembled at the front end of the hearing aid through the front cover 5, that is, the earplug 7 is assembled at the front end of the housing 10, that is, the earplug 7 is arranged at the front end of the first front section 11A and the second front section 11B. Further, the earplug 7 is assembled at the front end of the first front section and the second front section through the front cover 5, and the earplug 7 is specifically assembled at the front end of the first front section 11A and the second front section 11B through the front cover 5, and the earplug 7 is connected and fixed to the front end of the first front section 11A and the second front section 11B through the front cover 5.

[0039] In this embodiment, the earplug 7 is a trumpet-shaped earplug. In other embodiments, the earplug can be in other shapes.

[0040] Return to reference Figure 1 The first front section 11A has a first outer convex edge 13A on its outer surface, and the second front section 11B has a second outer convex edge 13B on its outer surface. The first outer convex edge 13A and the second outer convex edge 13B are used to match the assembly of the earplug 7 so that the earplug 7 is not easy to fall off.

[0041] refer to Figure 6 , the rear section 12 has a rear opening 102. Figure 7 , the front section 11 has a front opening 101 .

[0042] Combination Figures 1 to 5 It can be seen that the cerumen cap 6 is installed at the front opening 101 and the front end of the first front section 11A and the second front section 11B, that is, installed at the front end of the front cover 5 and the housing 10 and the front end of the first front section 11A and the second front section 11B, and, in combination Figures 1 to 9 It can be known that the cerumen cap 6 is arranged in the front through hole 50 of the front cover 5 .

[0043] Figure 2 and Figure 3 It is also shown that when the earplug 7 is in the shape of a horn, the widest part of the entire hearing aid is only the diameter of the horn edge of the earplug 7. The width of the housing 10 is smaller than the diameter of the horn edge, and the thickness of the housing 10 is even smaller, so that the hearing aid has a compact structure, and the entire hearing aid can basically enter the user's ear canal, which is a completely in-ear hearing aid.

[0044] Figure 4 and Figure 5 The cross-sectional structure of the hearing aid at two different angles is shown. Figure 4 It is a cross section obtained by cutting with a plane parallel to the length and width of the hearing aid. Figure 5 The cross section is obtained by cutting with a plane parallel to the thickness and length of the hearing aid. From the two cross-sectional views, it can be seen that the hearing aid has a compact structure and thus can be relatively small in size.

[0045] Figure 4 and Figure 5 Also shown is a flexible circuit board 31 around the battery 32. Figure 4 As shown, the battery 32 is the widest structure inside the housing 10 , and therefore, the width of the housing 10 only needs to be slightly larger than the battery 32 , which again proves that the entire hearing aid has a small width and a small volume.

[0046] refer to Figures 1 to 5 The receiver 21 and the chip 22 are located in the front section 11 of the housing 10, which is conducive to reducing the size of the hearing aid and also ensures that the user can obtain a greater sound output. The entire structure is stable and durable.

[0047] refer to Figures 1 to 5 The battery 32 is located in the rear section 12 of the housing 10. The shape of the rear section 12 is largely similar to that of the battery 32. Figure 4 , which again helps to reduce the size of the hearing aid.

[0048] refer to Figures 1 to 9The front section 11 is generally in the shape of a chamfered rectangular parallelepiped, the chip 22 is in the shape of a rectangular parallelepiped, and the receiver 21 is also generally in the shape of a rectangular parallelepiped. The chip 22 is disposed on a portion of the flexible circuit board 31, specifically on the chip portion 314, and the following reference is made to the following Fig.10 and Fig.11 The receiver 21 is electrically connected to the flexible circuit board 31 through corresponding wires (not marked), and is specifically electrically connected to the device portion 313, with reference to the subsequent Fig.10 and Fig.11 .

[0049] refer to Figures 1 to 9 , two opposite surfaces of the rear section 12 (ie, the first surface 10a and the second surface 10b) are planes. Figure 1 In the embodiment, the first surface 10a is divided into two parts, Figure 2 , Figure 6 and Figure 8 The two parts are shown together.

[0050] refer to Figures 1 to 9 The rear section 12 has two substantially symmetrical opposite sides, the two opposite sides are respectively a first side 10c and a second side 10d. That is, the first shell 10A and the second shell 10B each have an opposite side, the first shell 10A has a first side 10c, and the second shell 10B has a second side 10d.

[0051] The first side surface 10c is a part of the cylindrical side surface, and the second side surface 10d is another part of the cylindrical side surface. The two are basically symmetrical. However, the first side surface 10c can be slightly larger than the second side surface 10d (without affecting the basic symmetry between the two). The length of the first side surface 10c is slightly larger than the length of the second side surface 10d. Figure 8 The length difference is usually in the millimeter range, such as 2.59 mm, and does not affect the basic symmetry between the two.

[0052] In summary, on the one hand, the front section 11 is a rectangular hollow column structure as a whole, and the receiver 21 and the chip 22 are tightly arranged in the front section 11; on the other hand, the first surface 10a, the second surface 10b, the first side surface 10c and the second side surface 10d of the rear section 12 define that it is a relatively regular flat structure, and the shape of the rear section 12 is roughly similar to the shape of the battery 32, that is, the design of the two opposite surfaces and two opposite sides of the rear section 12 makes the battery 32 tightly located in the rear section 12 to reduce the width and volume of the hearing aid. Therefore, both aspects are conducive to reducing the volume of the hearing aid.

[0053] In this embodiment, the front section 11 has a first central axis parallel to its length. The rear section 12 has a second central axis located between two opposite surfaces (the first surface 10a and the second surface 10b) and between two opposite side surfaces (the first side surface 10c and the second side surface 10d). The first central axis and the second central axis are different straight lines, that is, there is an angle greater than zero between the two central axes.

[0054] exist Figure 8 In the figure, the first central axis of the front section 11 is represented by a dotted line L1, and the second central axis of the rear section 12 is represented by a dotted line L2, and the two are different straight lines.

[0055] exist Fig. 9 In the figure, the first central axis of the front section 11 is represented by a dotted line L3, and the second central axis of the rear section 12 is represented by a dotted line L4, which again indicates that the two are different straight lines.

[0056] In this embodiment, the first central axis of the front section 11 and the second central axis of the rear section 12 are designed to be different straight lines, so that the appearance of the hearing aid is more ergonomic and helps to reduce the volume.

[0057] Figure 8 The angle between the dotted line L1 and the dotted line L2 is the angle between the two central axes. Figure 8 The angle under the observation angle shown. This angle is also the angle between the first plane (not marked) and the second plane (not marked). The plane that divides the width of the front section 11 and the front opening 101 in half is the first plane (i.e., the first plane is Figure 8 The plane that divides the width of the rear section 12 and the rear opening 102 in half is the second plane (i.e., the second plane is Figure 8 It can be represented by the dotted line L2).

[0058] In this embodiment, the angle C1 between the first plane and the second plane is designed to be 5-30 degrees. If the angle C1 is greater than this angle range, it will be unfavorable for human ears to use, and if it is less than this angle, it will be unfavorable to reduce the length. At the same time, this angle range is ergonomic.

[0059] Fig. 9 In the figure, the angle between the dotted line L3 and the dotted line L4 is the angle between the two central axes. Fig. 9 The angle under the observation angle shown. This angle is also the angle between the third plane (not marked) and the fourth plane (not marked). Among them, the plane that divides the thickness of the front section 11 in half is the third plane (that is, the third plane is Fig. 9 The fourth plane is a plane that divides the thickness of the rear section 12 in half (i.e., the fourth plane is in Fig. 9 It can be represented by the dotted line L4).

[0060] In this embodiment, the angle C2 between the third plane and the fourth plane is designed to be 1-20 degrees. If the angle C2 is greater than this angle range, it will be unfavorable for human ears to use, and if it is less than this angle, it will not be conducive to reducing the length. At the same time, this angle range is ergonomic.

[0061] At the same time, the angle C1 and the angle C2 are coordinated and matched with each other, and jointly define the angular relationship between the front section 11 and the rear section 12. They make the entire hearing aid structure coordinated, and the overall shape of the shell 10 is similar to the Arabic numeral 6. Such an angle range is combined with the shape of the shell, and the overall design is exquisite, making the hearing aid comfortable to wear and easy to take out, achieving good performance, and ensuring that the hearing aid has a small size.

[0062] In this embodiment, the battery 32 is a button battery and is rechargeable. In this embodiment, the battery 32 is an important factor affecting the shape of the rear section 12, because the rear section 12 is mainly used to accommodate the battery 32. In this embodiment, the main body of the flexible circuit board 31 is bent into a circular ring portion 310 (see the following Fig.10 and Fig.11 ),refer to Figure 4 , Figure 5 and Fig.12 Specifically, the annular portion 310 of the flexible circuit board 31 surrounds the battery 32, which is also related to the battery 32 being a button battery. The flexible circuit board 31 can be attached to the battery 32 using double-sided tape (not shown).

[0063] In this embodiment, the outer side surfaces of the first rear section 12A and the second rear section 12B respectively have side holes, the first rear section 12A has two first side holes A1, and the second rear section 12B has two second side holes B1. Conductive contact sheets 33 are installed in these side holes. The four conductive contact sheets 33 are respectively electrically connected to the four pads 311 on the outer side surface of the flexible circuit board 31, which can be combined with the reference Figure 1 and Figure 4 .

[0064] refer to Figure 1 , Figure 4 and Figure 5 The bracket 43 is used to fix the cross position of the flexible circuit board 31. The bracket 43 is also used to fix the switch 42 and the microphone 41 at the same time. Fig.15 The bracket 43 cooperates with the back cover 8 to protect the conductive foam 411 and the dustproof net 412 of the microphone 41. Figures 13 to 16 .

[0065] refer to Figure 1 and Figure 4The rear end of the hearing aid is the rear cover 8, and the rear end of the housing 10 is sealed by the rear cover 8. One end of the button 421 is exposed outside the rear cover 8, and the other end is located inside the rear cover 8 and abuts against the switch 42, so that the user can control the switch 42 through the button 421.

[0066] refer to Figure 1 and Figure 4 , the removal line 9 is installed on the rear cover 8, that is, the rear cover 8 and the removal line 9 are assembled together. And the main part of the removal line 9 is exposed from the rear cover 8, and the removal line 9 has a larger end than the line body (not distinguished by marking), and the removal line 9 is used to facilitate the removal of the hearing aid.

[0067] refer to Figures 1 to 9 In this embodiment, the size of the rear cover 8 is small, and the width of the rear cover 8 is smaller than the width of the rear section 12, so that the volume of the hearing aid is reduced, that is, the volume of the hearing aid is further ensured to be small.

[0068] The rear section 12 of the housing 10 has a rear opening 102 (eg Figure 6 ), the rear cover 8 covers the rear opening 102. At this time, the rear section 12 is like a flat cylinder with two arched parts (not shown) cut off. The position where the larger arched part is cut off is the position where the rear opening 102 is located, and the position where the smaller arched part is cut off is the connection position with the front section 11. The position where the larger arched part is cut off is not cut off flatly, but a part protrudes backward (not marked), such as Figure 6 , Figure 8 and Fig. 9 As shown, this protrusion becomes a portion of the edge of the rear opening 102.

[0069] The flexible circuit board 31 has a pad 311 on the outer side, a device part 313 located at the front side of the annular part 310, a chip part 314 connected to the bottom end of the annular part 310, and a first end plate 315 and a second end plate 316. The first end plate 315 is used to fix the microphone 41, and the second end plate 316 is used to fix the switch 42. This design structure is ingenious, so that the microphone 41 and the switch 42 are fixed at the desired position in a unique way, that is, it is very unique and ingenious to fix the microphone 41 and the switch 42 at the position as close to the rear end as possible in the entire hearing aid, so that the microphone 41 can better receive external sounds, and the switch 42 is also easier to be manually controlled by the user through the button 421.

[0070] refer to Fig.10 and Fig.11, a first connecting section 3151 is connected between the first end plate 315 and the annular portion 310, and a second connecting section 3161 is connected between the second end plate 316 and the annular portion 310. That is, the first end plate 315 and the annular portion 310 are connected via the first connecting section 3151, and the second end plate 316 and the annular portion 310 are connected via the second connecting section 3161.

[0071] The first connecting section 3151 and the second connecting section 3161 intersect each other, and the intersection becomes the intersection position of the annular portion 310 (not marked). The first end plate 315 and the second end plate 316 are extended in two directions from the intersection position. The bracket 43 is formed through its internal opening 430 (refer to Figure 1 ) clamp this intersection so that the flexible circuit board 31 remains at the reference Fig.10 and Fig.11 The good bending shape shown can be combined with the subsequent Figures 13 to 16 , and can refer to Figure 4 .

[0072] Fig.12 As shown, the annular portion 310 is divided into two sections by the device portion 313 and the intersection position, and the outer side surface of each section has two pads 311, and each pad has a conductive contact piece 33.

[0073] The device portion 313 is also used to place a plurality of electronic devices (not labeled), for example, one electronic device may be a power field effect transistor, and another may be a power supply voltage monitor.

[0074] refer to Fig.10 The first end plate 315 has a sound transmission hole 3150 , and the second end plate 316 has two positioning holes 3160 . The sound transmission hole 3150 is used to cooperate with the sound reception of the microphone 41 , and the positioning holes 3160 are used for installing the switch 42 .

[0075] The chip portion 314 is connected to the bottom of the device portion 313, referring to Fig.11 , with a curved connection portion 3131 therebetween.

[0076] The angle between the bottom of the chip portion 314 and the bottom surface of the annular portion 310 can be 150-175 degrees. Fig.10 and Fig.11 In the figure, this angle is shown as angle D1, that is, the angle D1 is 150-175 degrees. Such a structure can ensure the fixation of various circuit structures on the flexible circuit board, and make the entire structure small in size, while also ensuring that the corresponding entire hearing aid structure is ergonomic.

[0077] The central angle between the device portion 313 and the intersection position at the annular portion 310 may be 160-179 degrees. Fig.12In the figure, the angle is shown as the central angle D2, that is, the central angle D2 is 160-179 degrees. Such a structure makes the flexible circuit board 31 more stable and compact, and also ensures that the hearing aid structure is more ergonomic.

[0078] It can be seen from the foregoing that this embodiment also provides a hearing aid microphone structure.

[0079] The hearing aid microphone structure includes: a microphone 41 disposed on the front surface of a first end plate 315 in the housing 10, the first end plate 315 is a part of the flexible circuit board 31, and the first end plate 315 has a sound transmission hole 3150, Fig.13 The acoustic foam 411 is disposed on the rear surface of the first end plate 315, and the acoustic foam 411 has an acoustic hole 4110, the acoustic hole 4110 and the acoustic hole 3150 are connected, reference Fig.13 and Fig.14 A dustproof net 412 is provided on the sound-conducting foam 411, and the dustproof net 412 has a peripheral portion (not distinguished by marking) and a net portion 4121, and the net portion 4121 blocks the sound-conducting hole 4110, referring to Fig.15 .

[0080] The microphone 41 is located on the front surface of the first end plate 315, and the sound-conducting foam 411 and the dust-proof net 412 are located on the rear surface of the first end plate 315. At this time, the microphone 41 and the sound-conducting foam 411 sandwich the first end plate 315 in the middle, ensuring that the surface of the microphone 41 that receives sound faces outward through the sound transmission hole 3150.

[0081] The sound-conducting foam 411 can make the sound reception effect better. The cooperation between the sound-conducting foam 411 and the dust-proof net 412 ensures that the sound can be better transmitted to the microphone 41 under the dust-proof protection. Therefore, the hearing aid microphone structure is not only compact, but also has good external sound reception effect and good dust-proof effect.

[0082] In this embodiment, the mesh portion 4121 of the dustproof net 412 is circular, and the diameter of the mesh portion 4121 is equal to the diameter of the sound guide hole 4110, so that the microphone can better receive external sounds.

[0083] As mentioned above, the flexible circuit board 31 also has a second end plate 316 and an annular portion 310 bent into an annular shape, a first connecting section 3151 is provided between the first end plate 315 and the annular portion 310, a second connecting section 3161 is provided between the second end plate 316 and the annular portion 310, the first connecting section 3151 and the second connecting section 3161 intersect, and the intersection becomes the intersection position (not marked) of the annular portion 310. The intersection position is located at the rear side of the annular portion 310, and the first end plate 315 and the second end plate 316 are located at the rear of the annular portion 310.

[0084] As mentioned above, the hearing aid microphone structure also includes a bracket 43, and the bracket 43 uses its opening 430 (refer to Figure 1 ) Hoop the first connecting section 3151 and the second connecting section 3161 together, refer to Fig.13 At the same time, the bracket 43 fixes the first end plate 315 and the second end plate 316 together on the bracket 43.

[0085] As mentioned above, reference Figures 13 to 16 , the back cover 8 is assembled with the bracket 43, the microphone 41, the acoustic foam 411 and the dust screen 412 are located between the back cover 8 and the bracket 43; at the same time, the first end plate 315 and the second end plate 316 are also located between the back cover 8 and the bracket 43 (inside), wherein the first connecting section 3151 and the second connecting section 3161 pass through the opening 430 of the bracket 43. At the same time, the second end plate 316 has a switch 42, and the switch 42 is located between the back cover 8 and the bracket 43. The switch 42 and the microphone 41 are protected inside by the back cover 8. Fig.16 Only the structure after the rear cover 8 is assembled is shown, and the assembly of the removal line 9 and the button 421 is omitted.

[0086] Fig.17 The cross-section structure of the hearing aid at the position of the microphone 41 is shown, and Fig.18 The enlarged structure of the cut structure is shown, i.e. Fig.18 yes Fig.17 A schematic diagram of the enlarged structure at the dotted box A. Fig.17 and Fig.18 In this embodiment, the relevant structures of the microphone structure are neatly designed. The sound-conducting foam 411 and the dust-proof net 412 cooperate to protect the microphone 41. Together with the first end plate 315, the bracket 43 and the back cover 8, it is ensured that the microphone 41 is located at the rear of the hearing aid to better obtain external sounds and make the volume of the entire hearing aid small.

[0087] Although the embodiments of the present invention have been shown and described above, those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention, and the scope of protection of the present invention shall be subject to the claims.

Claims

1. A hearing aid microphone structure, characterized in that: include: A microphone is arranged on the front surface of a first end plate in the housing, wherein the first end plate is a part of a flexible circuit board and has a sound transmission hole; A sound-conducting foam is arranged on the rear surface of the first end plate, wherein the sound-conducting foam has a sound-conducting hole, and the sound-conducting hole is connected to the sound-transmitting hole; A dustproof net disposed on the sound-conducting foam, the dustproof net having a peripheral portion and a net portion, the net portion blocking the front of the sound-conducting hole; The flexible circuit board also has a second end plate and an annular portion bent into a circular shape, a first connecting section is provided between the first end plate and the annular portion, a second connecting section is provided between the second end plate and the annular portion, the first connecting section and the second connecting section intersect, and the intersection becomes the intersection position of the annular portion.

2. The hearing aid microphone structure according to claim 1, characterized in that: It also includes a bracket, the bracket has an opening, the first connecting section and the second connecting section pass through the opening and are clamped together by the bracket, and the first end plate and the second end plate are fixed on the bracket.

3. The hearing aid microphone structure according to claim 1, characterized in that: The annular portion has a pad, the housing includes a front section and a rear section, the rear section has a side hole, and a conductive contact sheet is installed in the side hole; the conductive contact sheet is electrically connected to the pad on the outer side of the flexible circuit board.

4. The hearing aid microphone structure according to claim 3, characterized in that: A rear cover is also included, the rear section of the housing has a rear opening, and the rear cover covers the rear opening.

5. The hearing aid microphone structure according to claim 4, characterized in that: The back cover is assembled with the bracket, and the microphone, the sound-conducting foam and the dust-proof net are located between the back cover and the bracket; the first end plate and the second end plate are also located between the back cover and the bracket.

6. The hearing aid microphone structure according to claim 5, characterized in that: The second end plate has a switch, and the switch is located between the rear cover and the bracket.

7. The hearing aid microphone structure according to claim 4, characterized in that: The back cover is provided with a sound receiving port, a button hole and a wire hole.

8. The hearing aid microphone structure according to claim 1, characterized in that: The intersection position is located at the rear side of the annular portion, and the first end plate and the second end plate are located behind the annular portion.

9. A hearing aid, characterized in that: The hearing aid microphone structure comprises the hearing aid microphone structure as described in any one of claims 1 to 8.

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