Completely in-the-canal hearing aids

Abstract

A completely in-ear hearing aid includes a housing, a receiver, a chip, a battery, a flexible circuit board and a microphone; the housing includes a front section and a rear section; the receiver and the chip are located in the front section; the battery is located in the rear section; the rear section has two opposite surfaces and two opposite sides; the front section has a first central axis parallel to its length; the rear section has a second central axis located between the two opposite surfaces and between the two opposite sides; the first central axis and the second central axis are different straight lines. The completely in-ear hearing aid has a fine and compact structure, a reasonable and ingenious design, diversified functions, and is comfortable to wear.

Description

Technical Field

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

[0002] Hearing aids are usually installed in or behind the user's ear to amplify the 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 fully in-ear hearing aid is provided, comprising a housing, a receiver, a chip, a battery, a flexible circuit board and a microphone; the housing comprises a front section and a rear section; the receiver and the chip are located in the front section; the battery is located in the rear section; the rear section has two opposite surfaces and two opposite side surfaces; the front section has a first central axis parallel to its length; the rear section has a second central axis located between the two opposite surfaces and between the two opposite side surfaces; the first central axis and the second central axis are different straight lines.

[0007] Among them, the two opposite surfaces of the rear section are planes; the outer shell is divided into a first shell and a second shell, the first shell and the second shell respectively have an opposite side surface, the opposite side surface of the first shell is the first side surface, and the opposite side surface of the second shell is the second side surface, the first side surface is a part of the cylindrical side surface, and the second side surface is another part of the cylindrical side surface; the first shell includes a first front section and a first rear section connected together; the second shell includes a second front section and a second rear section connected together; the receiver and the chip are located in the first front section and the second front section; the battery is located in the first rear section and the second rear section.

[0008] The battery may be a button battery; the flexible circuit board has a circular ring portion bent into a circular ring shape, and the circular ring portion surrounds the battery.

[0009] The hearing aid provided by the present invention:

[0010] By designing the shell to have a front section and a rear section, the receiver and the chip are located in the front section; the battery is located in the rear section; and the rear section is designed to have two corresponding relative planes and two relative side surfaces, and the first central axis of the front section and the second central axis of the rear section are designed to be different straight lines, so that the fully in-ear hearing aid has a delicate and compact structure, a reasonable and ingenious design, diversified functions, and is comfortable to wear.

[0011] The first surface, the second surface, the first side surface and the second side surface of the rear section define that it is a relatively regular flat structure. The shape of the rear section is roughly similar to the shape of the battery, that is, the design of the two opposite surfaces and the two opposite sides of the rear section allows the battery to be tightly located in the rear section to reduce the width and volume of the hearing aid.

[0012] The first plane that bisects the width of the front section and the front opening, and the second plane that bisects the width of the rear section and the rear opening, have an angle of 5-30 degrees. This angle range will be beneficial for human ear use and will also help to reduce the length, and this angle range is ergonomic. The third plane that bisects the thickness of the front section and the fourth plane that bisects the thickness of the rear section have an angle of 1-20 degrees. This angle range is beneficial for human ear use and will also help to reduce the length, and this angle range is ergonomic. At the same time, the above two angles coordinate and cooperate with each other, and jointly define the angular relationship between the front section and the rear section. They make the entire hearing aid structure coordinated. Such an angle range, combined with the shape of the outer shell, makes the overall design 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of a hearing aid explosion;

[0014] Figure 2 This is the first angle diagram of the hearing aid;

[0015] Figure 3 This is a second angle diagram of the hearing aid;

[0016] Figure 4 is a schematic diagram of the first cross-sectional structure of a hearing aid;

[0017] Figure 5 is a schematic diagram of the second cross-sectional structure of a hearing aid;

[0018] Figure 6 This is a schematic diagram of the first angle of the shell;

[0019] Figure 7 This is a second angle diagram of the shell;

[0020] Figure 8 This is a third angle diagram of the shell;

[0021] Fig. 9 This is a fourth angle diagram of the shell;

[0022] Fig.10 This is the first angle diagram of the flexible circuit board;

[0023] Fig.11 This is a second angle diagram of the flexible circuit board;

[0024] Fig.12 It is a schematic diagram of the corresponding structure of the flexible circuit board assembly;

[0025] Fig.13 This is a first angle schematic diagram of the conductive contact piece;

[0026] Fig.14 This is a second angle diagram of the conductive contact sheet with the conductive foam removed;

[0027] Fig.15 It is a schematic diagram of conductive foam;

[0028] Fig.16 This is a third angle diagram of the conductive contact piece when it is equipped with conductive foam;

[0029] Fig.17 is a schematic diagram of the inner side surface of the first shell;

[0030] Fig.18 It is a schematic diagram of the assembly structure of a flexible circuit board, a bracket, a conductive contact sheet and a microphone;

[0031] Fig.19 yes Fig.18 Schematic diagram of the structure of continuing to assemble the sound-conducting foam and the switch;

[0032] Fig. 20 yes Fig.19 Schematic diagram of the structure with dust screen installed on the structure;

[0033] Fig.21 yes Fig. 20 Schematic diagram of the structure of the rear cover continuing to be assembled. DETAILED DESCRIPTION

[0034] 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.

[0035] 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.

[0036] The hearing aid of this embodiment includes a flexible circuit board, an electrical contact structure and a microphone structure. Therefore, this embodiment also provides a flexible circuit board of the hearing aid, an electrical contact structure of the hearing aid and a microphone structure of the hearing aid.

[0037] 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.

[0038] In other embodiments, there may be no button, and in this case, there is no button hole on the back cover. In this structure, when the user is wearing the hearing aid, he can tap the hearing aid to switch programs. The principle of program switching of this hearing aid is that the corresponding chip can detect the airflow through the microphone, and directly switch the program of the hearing aid by sensing the change of airflow.

[0039] 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.

[0040] 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 5It 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.

[0041] In this embodiment, the earplug 7 is a trumpet-shaped earplug. In other embodiments, the earplug can be in other shapes.

[0042] 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.

[0043] refer to Figure 6 , the rear section 12 has a rear opening 102. Figure 7 , the front section 11 has a front opening 101 .

[0044] Combination Figures 1 to 5 It can be seen that the cerumen cap 6 is installed at the front end of the front opening 101 and 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 combined with 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 .

[0045] 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.

[0046] 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.

[0047] Figure 4 and Figure 5 Also shown is a flexible circuit board 31 around the battery 32. Figure 4As 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.

[0048] 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 ensuring that the user can obtain a greater sound output. The entire structure is stable and durable. 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. The design and coordination of these two internal structures can save space and reduce the size.

[0049] refer to Figures 1 to 9 The 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 At the same time, the receiver 21 and the chip 22 are stacked side by side, and the length direction of the receiver 21 and the chip 22 is consistent with the length direction of the front section 11. This structure allows the receiver 21 and the chip 22 to be neatly arranged in the front section 11, which is more helpful to reduce the volume.

[0050] 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.

[0051] 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.

[0052] 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 level, for example, it can be 2.59 mm, which does not affect the basic symmetry between the two.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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 8The 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).

[0059] 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.

[0060] 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).

[0061] 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.

[0062] 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.

[0063] 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).

[0064] 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 The four conductive contact pieces 33 enable the hearing aid of this embodiment to have diversified functions, that is, the functions are more powerful and meet more usage requirements of users. Please refer to the subsequent content for further details.

[0065] 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. 20 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 18 to 21 .

[0066] refer to Figure 1 and Figure 4 The 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.

[0067] 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.

[0068] 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.

[0069] 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. 9As shown, this protrusion becomes a portion of the edge of the rear opening 102.

[0070] As mentioned above, this embodiment also provides a flexible circuit board 31 .

[0071] The flexible circuit board 31 has a circular ring-shaped portion 310 , which is used to surround the battery 32 . The outer side of the circular ring-shaped portion 310 has a pad 311 , which is used to electrically connect to the conductive contact sheet 33 . Fig.10 and Fig.11 It is further shown that the flexible circuit board 31 has a device part 313 located at the front side of the annular part 310, and the device part 313 is used to install electronic devices (not marked) and to electrically connect the receiver 21; the flexible circuit board 31 has a chip part 314 connected to the bottom end of the annular part 310, and the chip part 314 is used to bind the hearing aid chip 22. At this time, the receiver 21, the chip 22 and the battery 32 can be strung together by the flexible circuit board 31 into a compact structure, thereby ensuring that their volume is small, and the volume of the corresponding hearing aid can also be reduced.

[0072] It should be noted that the front side of the annular portion 310 where the device portion 313 is located is not the exact front side of the annular portion 310, but is slightly offset by 5-30 degrees. This angle can be used as a reference. Figure 8 The angle C1 in Fig.12 The supplementary angle of the central angle D2 (not marked).

[0073] refer to Fig.10 and Fig.11 The flexible circuit board 31 further includes 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 .

[0074] refer to Fig.10 and Fig.11 The first end plate 315 is connected to the annular portion 310 by a first connecting section 3151, and the second end plate 316 is connected to the annular portion 310 by a second connecting section 3161. The first connecting section 3151 and the second connecting section 3161 intersect each other, and the intersection becomes the intersection position (not marked) of the annular portion 310. 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 by 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 18 to 21 , and can refer to Figure 4 .

[0075] Fig.12As 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.

[0076] In order to meet circuit requirements, the device portion 313 is also used to place multiple 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.

[0077] 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 .

[0078] 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.

[0079] 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.

[0080] The central angle between the device portion 313 and the intersection position at the annular portion 310 may be 160-179 degrees. Fig.12 In 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.

[0081] It can be seen from the foregoing that this embodiment also provides an electrical contact structure for a hearing aid.

[0082] The hearing aid electrical contact structure comprises: a housing 10, the housing 10 comprises a front section 11 and a rear section 12 connected to each other, and the housing 10 is divided into a first housing 10A and a second housing 10B, Figure 6 and Figure 7 As shown; the rear section 12 is used to accommodate the battery 32 and at least a portion of the flexible circuit board 31, reference Figure 4 The outer side of the rear section 12 has at least two side holes, specifically the first rear section 12A has two first side holes A1, the second rear section 12B has two second side holes B1, reference Figure 6 and Figure 7 The first side hole A1 and the second side hole B1 are equipped with a conductive contact sheet 33, reference Figure 2 and Figure 3 , the conductive contact sheet 33 is electrically connected to the conductive pad 311 of the flexible circuit board 31, referring to Figure 4 ,as well as Figures 18 to 21 The outer surface of the conductive contact piece 33 and the outer side surface of the rear section 12 have a smooth transition, reference Figure 2 and Figure 3 .

[0083] Smooth transition means that the side hole and the conductive contact piece 33 fit closely, with basically no gap, and the outer side surface of the rear section 12 where the side hole is located is integrated with the outer surface of the conductive contact piece 33, for example, the outer surface 331 of the conductive contact piece 33 and the outer side surface of the rear section 12 form a structure located on the same curved surface. At this time, neither a groove structure nor a convex structure is formed at the location of the conductive contact piece 33, so that the groove structure or the convex structure can be prevented from damaging the charging contact of the corresponding charging device (such as a charging box) during use, thereby protecting the corresponding charging contact, and also protecting the conductive contact piece 33 and the side hole itself.

[0084] In this embodiment, the first rear section 12A has two first side holes A1, and the second rear section 12B has two second side holes B1. Therefore, there are four conductive contact sheets 33. The four conductive contact sheets 33 serve as a positive electrode of the circuit, a negative electrode of the circuit, a shutdown trigger electrode, and a program burning interface, respectively. This design of four conductive contact sheets can enhance the function of the hearing aid.

[0085] The design of the shutdown trigger pole, this conductive contact piece 33, enables the hearing aid to cooperate with a charging device (such as a charging box) to achieve intelligent shutdown. Specifically, when the specially designed electrical trigger contact in the charging device contacts the shutdown trigger pole, this conductive contact piece 33, the hearing aid will shut down immediately. This avoids the situation where the user forgets to shut down the hearing aid, and ensures that the hearing aid is triggered to shut down as soon as it is placed in the charging device, thereby achieving automatic shutdown and preventing power waste.

[0086] The design of the conductive contact piece 33 of the program burning interface enables the hearing aid to be further upgraded later, that is, new programs can be further burned, so that the hearing aid program can be iteratively updated to meet more usage requirements.

[0087] It should be noted that in other embodiments of the present invention, there may be three conductive contact sheets, which serve as the positive electrode, the negative electrode and the shutdown trigger electrode of the circuit respectively; or, there may be three conductive contact sheets, which serve as the positive electrode, the negative electrode and the program burning interface respectively.

[0088] refer to Fig.13The conductive contact piece 33 is a stepped double-layer structure, having an outer surface 331 and an inner ring surface 332, and the side surface 333 connecting the inner ring surface 332 and the outer surface 331 is an inclined surface. That is, the side surface 333 is not perpendicular to the outer surface 331, nor is it perpendicular to the inner ring surface 332, but forms an obtuse angle with them. The conductive contact piece 33 of this structure can be assembled more conveniently on the one hand, and can ensure better smooth transition after assembly on the other hand.

[0089] refer to Fig.14 The inner side of the conductive contact sheet 33 has a groove 330, and the groove 333 has a conductive foam 334 ( Fig.14 Not shown, reference Fig.16 ). Separate conductive foam 334 reference Fig.15 The conductive foam 334 is attached to the inner side of the groove 330. Fig.16 The specific pasting can be achieved by using double-sided conductive adhesive (not shown).

[0090] refer to Fig.18 , showing that one of the conductive foams 334 is pressed onto the corresponding pad 311, and the pad 311 is just blocked by the conductive foam 334, so the pad 311 can be returned to the reference Figure 1 , Fig.10 and Fig.11 The design of the conductive foam 334 can improve the bonding effect and the conductive performance between the conductive contact sheet 33 and the pad 311, thereby achieving a dual effect improvement.

[0091] The flexible circuit board 31 is an integrated type, and the annular portion 310 of the flexible circuit board 31 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. The outer surfaces of the two conductive contact sheets 33 smoothly transition with the side holes of the first rear section 12A, and the outer surfaces of the two conductive contact sheets 33 smoothly transition with the side holes of the second rear section 12B.

[0092] Fig.17 The structure of the inner side of the first shell 10A is shown. It can be seen that the inner side of the edge of the first side hole A1 has a side groove A11 that matches the side 333 of the conductive contact sheet 33. The side 333 and the side groove A11 can be specifically bonded by glue, that is, the conductive contact sheet 33 is fixed to the first shell 10A and then pressed and fixed to the pad. The cooperation between the side 333 and the side groove A11 not only facilitates the assembly of the conductive contact sheet 33 and the first shell 10A, but also further ensures that after assembly, the outer surface 331 of the conductive contact sheet 33 and the first rear section 12A of the first shell 10A are smoothly transitioned.

[0093] Similarly, the second housing 10B also has a corresponding structure, so that the outer surface 331 of the conductive contact piece 33 and the second rear section 12B of the second housing 10B are smoothly transitioned, which will not be described in detail.

[0094] It can be seen from the foregoing that this embodiment also provides a hearing aid microphone structure.

[0095] 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.18 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.18 and Fig.19 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. 20 .

[0096] 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.18 At the same time, the bracket 43 fixes the first end plate 315 and the second end plate 316 together on the bracket 43.

[0097] As mentioned above, reference Figures 18 to 21 , 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.21 Only the structure after the rear cover 8 is assembled is shown, and the assembly of the take-out line 9 and the button 421 is omitted. At this time, in the overall structure of the hearing aid, the microphone 41 is ensured to be at the rear to better obtain external sounds, and the receiver 21 is at the front to ensure that the user can hear as loud a sound as possible, and the entire structure is also more stable.

[0098] 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 complete in-ear hearing aid, comprising a housing, a receiver, a chip, a battery, a flexible circuit board and a microphone, characterized in that: The housing comprises a front section and a rear section; The receiver and the chip are located in the front section; The battery is located in the rear section; The rear section has two opposing surfaces and two opposing sides; The front section has a first central axis parallel to its length; the rear section has a second central axis located between the two opposite surfaces and between the two opposite side surfaces; the first central axis and the second central axis are different straight lines; The flexible circuit board also includes a first end plate and a second end plate. The main body of the flexible circuit board is bent into a circular ring portion. A first connecting section is connected between the first end plate and the circular ring portion. A second connecting section is connected between the second end plate and the circular ring portion. The first connecting section and the second connecting section intersect with each other.

2. The full in-ear hearing aid according to claim 1, characterized in that: The two opposing surfaces of the rear section are planes; The housing is divided into a first shell and a second shell, the first shell and the second shell respectively have one opposing side surface, the opposing side surface of the first shell is the first side surface, the opposing side surface of the second shell is the second side surface, the first side surface is a part of the cylindrical side surface, and the second side surface is another part of the cylindrical side surface; The first housing includes a first front section and a first rear section connected to each other; The second housing includes a second front section and a second rear section connected to each other; The receiver and the chip are located in the first front section and the second front section; The battery is located within the first rear section and the second rear section.

3. The full in-ear hearing aid according to claim 2, characterized in that: The battery is a button battery; the annular portion surrounds the battery.

4. The full in-ear hearing aid as claimed in claim 3, characterized in that: The front section has a front opening; The rear section has a rear opening; A plane that divides the width of the front section and the front opening in half is a first plane; A plane that divides the width of the rear section and the rear opening in half is a second plane; The angle between the first plane and the second plane is 5-30 degrees.

5. The complete in-ear hearing aid according to claim 4, characterized in that: A plane that bisects the thickness of the front section is a third plane; A plane that bisects the thickness of the rear section is a fourth plane; The included angle between the third plane and the fourth plane is 1-20 degrees.

6. The complete in-ear hearing aid according to claim 3, characterized in that: The outer side surfaces of the first rear section and the second rear section respectively have side holes, and conductive contact sheets are installed in the side holes; the conductive contact sheets are electrically connected to the pads on the outer side surface of the flexible circuit board.

7. The full in-ear hearing aid according to claim 4, characterized in that: It also includes an earplug and a front cover, wherein the front cover is arranged at the front ends of the first front section and the second front section; the earplug is assembled at the front ends of the first front section and the second front section through the front cover.

8. The complete in-ear hearing aid according to claim 7, characterized in that: The first front section outer surface has a first outer convex edge; the second front section outer surface has a second outer convex edge.

9. The complete in-ear hearing aid according to claim 8, characterized in that: Also included is a cerumen cap, which is installed between the front cover and the front ends of the first front section and the second front section.

10. The complete in-ear hearing aid according to claim 7, characterized in that: It also includes a switch, a bracket, a button, a back cover and a take-out line; the bracket fixes the switch and the microphone; one end of the button is exposed outside the back cover, and the other end is against the switch; the take-out line is installed on the back cover.

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