Hearing aid electrical contact structure and hearing aid

Abstract

Hearing aid electrical contact structure and hearing aid. The hearing aid electrical contact structure comprises: a housing, the housing comprises a connected front section and a rear section; the rear section is used to accommodate a battery and at least a portion of a flexible circuit board; the outer side surface of the rear section has at least two side holes; a conductive contact sheet is installed in the side hole, and the conductive contact sheet is electrically connected to the pad of the flexible circuit board; the outer surface of the conductive contact sheet smoothly transitions with the outer side surface of the rear section. The hearing aid electrical contact structure has a smooth surface, does not have a groove structure or a protrusion structure, is not easy to damage the corresponding charging contact, and can also protect the conductive contact sheet and the side hole itself.

Description

Technical Field

[0001] The present invention relates to the field of hearing aids, and in particular to an electrical contact structure of a hearing aid and a 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 hearing aid electrical contact structure and a hearing aid.

[0006] The present invention is implemented as follows: a hearing aid electrical contact structure is provided, comprising: a shell, the shell comprising a connected front section and a rear section; the rear section is used to accommodate a battery and at least a portion of a flexible circuit board; the outer side surface of the rear section has at least two side holes; a conductive contact sheet is installed in the side hole, and the conductive contact sheet is electrically connected to the pad of the flexible circuit board; the outer surface of the conductive contact sheet smoothly transitions to the outer side surface of the rear section.

[0007] Optionally, there are four conductive contact pieces, which are the positive pole of the circuit, the negative pole of the circuit, the shutdown trigger pole and the program burning interface.

[0008] Optionally, the inner side of the conductive contact piece has a groove, the groove has a conductive foam, the conductive foam is pressed on the pad, and the conductive foam is adhered in the groove.

[0009] The present invention also provides a hearing aid, comprising the above-mentioned hearing aid electrical contact structure.

[0010] The hearing aid electrical contact structure provided by the present invention:

[0011] It includes a shell, which includes a connected front section and a rear section; the rear section is used to accommodate a battery and at least a part of a flexible circuit board; the outer side surface of the rear section has at least two side holes; a conductive contact piece is installed in the side hole, and the conductive contact piece is electrically connected to the pad of the flexible circuit board; the outer surface of the conductive contact piece and the outer side surface of the rear section are smoothly transitioned. The smooth transition makes it possible to form neither a groove structure nor a convex structure at the location of the conductive contact piece, thereby preventing the corresponding charging contact from being damaged by the groove structure or the convex structure during use, thereby protecting the corresponding charging contact, and also protecting the conductive contact piece and the side hole itself.

[0012] It can include four conductive contact pieces, which are the positive pole of the circuit, the negative pole of the circuit, the shutdown trigger pole and the program burning interface. The design of the four conductive contact pieces can enhance the function of the hearing aid. The shutdown trigger pole enables the hearing aid to cooperate with the charging device (such as the charging box) to realize intelligent shutdown, avoiding the situation that the user forgets to shut down, and ensures that once the hearing aid is placed on the charging device, the hearing aid is triggered to shut down automatically to prevent power waste. 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 needs.

[0013] Its conductive contact piece can be a stepped double-layer structure, with an outer surface and an inner ring surface, and the side surface connecting the inner ring surface and the outer surface is an inclined surface, which can be glued and matched with the side groove of the side hole of the shell. On the one hand, the conductive contact piece of this structure can be more convenient to assemble, and on the other hand, it can ensure that the above-mentioned smooth transition is better achieved after assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a diagram of a hearing aid explosion;

[0015] Figure 2 This is the first angle diagram of the hearing aid;

[0016] Figure 3 This is a second angle diagram of the hearing aid;

[0017] Figure 4 is a schematic diagram of the first cross-sectional structure of a hearing aid;

[0018] Figure 5 is a schematic diagram of the second cross-sectional structure of a hearing aid;

[0019] Figure 6 This is a schematic diagram of the first angle of the shell;

[0020] Figure 7 This is a second angle diagram of the shell;

[0021] Figure 8This is a third angle diagram of the shell;

[0022] Fig. 9 This is a fourth angle diagram of the shell;

[0023] Fig.10 This is the first angle diagram of the flexible circuit board;

[0024] Fig.11 This is a second angle diagram of the flexible circuit board;

[0025] Fig.12 It is a schematic diagram of the corresponding structure of the flexible circuit board assembly;

[0026] Fig.13 This is a first angle schematic diagram of the conductive contact piece;

[0027] Fig.14 This is a second angle diagram of the conductive contact sheet with the conductive foam removed;

[0028] Fig.15 It is a schematic diagram of conductive foam;

[0029] Fig.16 This is a third angle diagram of the conductive contact piece when it is equipped with conductive foam;

[0030] Fig.17 is a schematic diagram of the inner side surface of the first shell;

[0031] 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. DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] The hearing aid of this embodiment includes an electrical contact structure, and therefore, this embodiment also provides a hearing aid electrical contact structure.

[0035] 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.

[0036] 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.

[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 rear end of the hearing aid. In this embodiment, the earplug 7 is a trumpet-shaped earplug. In other embodiments, the earplug can be in other shapes.

[0039] 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.

[0040] refer to Figure 6 , the rear section 12 has a rear opening 102. Figure 7 , the front section 11 has a front opening 101 .

[0041] 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 .

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.11The 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 .

[0048] 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 plane. 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] exist Figure 8In 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.

[0054] 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.

[0055] 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.

[0056] 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).

[0057] 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.

[0058] 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).

[0059] 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.

[0060] 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.

[0061] In this embodiment, the battery 32 is a button battery and is rechargeable. 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 annular portion 310 can be attached to the battery 32 using double-sided tape (not shown).

[0062] 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. Figure 1 , Figure 4 , Figure 5 and Fig.18 The bracket 43 cooperates with the back cover 8 to protect the conductive foam 411 and the dustproof net 412 of the microphone 41 .

[0063] 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.

[0064] 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.

[0065] 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.

[0066] refer to Fig.10 and Fig.11The 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. 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, the microphone 41 and the switch 42 are fixed as close to the rear end as possible in a very unique and ingenious way throughout the hearing aid, so that the microphone 41 can better receive external sounds, and the switch 42 can also be more easily manually controlled by the user through the button 421.

[0067] 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.

[0068] 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 provided with an internal opening 430 (refer to Figure 1 ) is stuck at this intersection, and the flexible circuit board 31 maintains the reference Fig.10 and Fig.11 The good bending shape shown can be combined with reference Fig.18 , and can refer to Figure 4 .

[0069] 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.

[0070] The bottom of the device portion 313 is flush with the bottom of the annular portion 310, and the top of the device portion 313 is higher than the top of the annular portion 310. The portion of the device portion 313 higher than the annular portion 310 is used to fix multiple electronic devices (not marked), for example, one electronic device may be a power field effect transistor, and another may be a power supply voltage monitor.

[0071] 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 .

[0072] 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.

[0073] 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.

[0074] 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.

[0075] It can be seen from the foregoing that this embodiment also provides an electrical contact structure for a hearing aid.

[0076] 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 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 .

[0077] 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, thereby preventing the charging contact of the corresponding charging device (such as a charging box) from being damaged due to the presence of a groove structure or a convex structure during use, thereby protecting the corresponding charging contact, and also protecting the conductive contact piece 33 and the side hole itself.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] It should be noted that in other embodiments of the present invention, there may be three conductive contact sheets, which are used as the positive electrode of the circuit, the negative electrode of the circuit, and the shutdown trigger electrode; or, there may be three conductive contact sheets, which are used as the positive electrode of the circuit, the negative electrode of the circuit, and the program burning interface. That is, the present invention provides a structure with three conductive contact sheets, which can also achieve the purpose of expanding the performance of the hearing aid.

[0082] refer to Fig.13 The 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.

[0083] refer to Fig.14The 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).

[0084] refer to Fig.18 , Fig.18 It is shown that one of the conductive foams 334 is pressed on the pad 311 (the other structures of the conductive contact sheet 33 corresponding to the conductive foam 334 are omitted, but it should be noted that the conductive foam 334 is pressed on the pad along with the other structures of the conductive contact sheet 33), and the pad 311 pressed by the conductive foam 334 is just covered by the conductive foam 334. 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, achieving a double effect improvement.

[0085] Combination Figure 1 , Fig.10 , Fig.11 and Fig.12 ,as well as Fig.18 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.

[0086] Depend on Fig.13 and Fig.14 It can be seen that the conductive contact piece 33 is symmetrically arranged on the side of the annular portion 310, and the overall outer shape of the conductive contact piece 33 is a chamfered rectangle (that is, the shape formed by the inner ring surface 332 and the outer circle is a chamfered rectangle), and the outer surface 331 of the conductive contact piece 33 is also a chamfered rectangle.

[0087] Fig.17The 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 matched by glue bonding, that is, the conductive contact sheet 33 is fixed to the first shell 10A, and then pressed and fixed to the pad 311. The matching of 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, and the conductive contact sheet 33 tightly seals the first side hole A1.

[0088] Similarly, the second shell 10B also has corresponding inner side surfaces and side groove structures, so that the outer surface 331 of the conductive contact piece 33 and the second rear section 12B of the second shell 10B are smoothly transitioned, and the second side hole B1 is tightly sealed by the conductive contact piece 33, which will not be described in detail here.

[0089] 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 electrical contact structure, characterized in that: include: A housing, the housing comprising a front section and a rear section connected to each other; The rear section is used to accommodate a battery and at least a portion of a flexible circuit board; The outer side surface of the rear section has at least two side holes; A conductive contact sheet is installed in the side hole, and the conductive contact sheet is electrically connected to the pad of the flexible circuit board; The outer surface of the conductive contact piece smoothly transitions with the outer side surface of the rear section; 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, and 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, and the bracket is clamped at this intersection through its internal opening.

2. The hearing aid electrical contact structure according to claim 1, characterized in that: The rear section of the shell has two relatively plane surfaces and two basically symmetrical cylindrical side surfaces; the shell is divided into a first shell and a second shell; the first shell and the second shell respectively have one cylindrical side surface; the first shell includes a first front section and a first rear section connected front and back; the second shell includes a second front section and a second rear section connected front and back; the outer side surfaces of the first rear section and the second rear section respectively have the side holes.

3. The hearing aid electrical contact structure according to claim 2, characterized in that: The flexible circuit board has a circular ring portion located between the rear section and the battery, and the pad is located on the outer side of the circular ring portion.

4. The hearing aid electrical contact structure according to claim 3, characterized in that: The flexible circuit board includes a device portion located at the front side and a cross position located at the rear side; the annular portion is divided into two sections by the device portion and the cross position, and the outer side surface of each section has two pads.

5. The hearing aid electrical contact structure according to claim 3, characterized in that: There are four conductive contact pieces, which serve as a circuit positive electrode, a circuit negative electrode, a shutdown trigger electrode and a program burning interface respectively.

6. The hearing aid electrical contact structure according to claim 3, characterized in that: There are three conductive contact pieces, which are used as the positive electrode of the circuit, the negative electrode of the circuit and the shutdown trigger electrode respectively; or there are three conductive contact pieces, which are used as the positive electrode of the circuit, the negative electrode of the circuit and the program burning interface respectively.

7. The hearing aid electrical contact structure according to any one of claims 2 to 6, characterized in that: The conductive contact piece is a stepped double-layer structure having an inner annular surface, and the side surface connecting the inner annular surface and the outer surface in the stepped double-layer structure is an inclined surface.

8. The hearing aid electrical contact structure according to claim 7, characterized in that: The inner side of the conductive contact sheet has a groove inside, the groove has conductive foam inside, and the conductive foam is pressed on the pad.

9. The hearing aid electrical contact structure according to claim 7, characterized in that: The conductive contact piece is symmetrically arranged on the side of the annular portion. The overall outer shape of the conductive contact piece is a chamfered rectangle, and the outer surface shape of the conductive contact piece is also a chamfered rectangle.

10. A hearing aid, characterized in that: The hearing aid electrical contact structure comprises the hearing aid electrical contact structure as claimed in any one of claims 1 to 9.

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