A hearing aid main unit and a hearing aid assembly

Abstract

The utility model belongs to the related technical field of hearing aid, especially, a kind of hearing aid mainframe and hearing aid component. Through setting machine body, including first shell and second shell, first shell is connected with second shell and forms accommodating cavity inside, first shell end is provided with sound guide part, second shell end is provided with connecting part and circuit module, set in accommodating cavity, circuit module is electrically connected with connecting part, and circuit module is used to obtain and amplify external sound source, and amplified external sound source is transmitted into human ear by sound guide part;Wherein, connecting part is equipped with positioning end, and connecting part is positioned and connected with charging box by positioning end. Through positioning end, it is more easily positioned on original positive and negative end to improve user use comfort, and hearing aid is not easily put upside down, to avoid hearing aid being burnt when charging.

Description

Technical Field

[0001] This utility model belongs to the field of hearing aid technology, and in particular relates to a hearing aid main unit and hearing aid components. Background Technology

[0002] Hearing aids are important devices that help people with hearing impairments regain some of their hearing and are widely used worldwide. Over time, hearing aids have evolved into many different types. In addition to traditional over-ear hearing aids, portable hearing aids with charging cases, similar to headphones, have also emerged.

[0003] In existing hearing aids with charging cases, because the shape of the hearing aid is different from that of the earphone and is more symmetrical, it is difficult to position the hearing aid in the charging case, and the positive and negative terminals are easily reversed, which can burn out the internal circuitry of the hearing aid. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a hearing aid main unit and a hearing aid assembly. By adding a positioning terminal to the existing positive and negative charging terminals, the hearing aid main unit can be quickly positioned when placed in the charging case, preventing it from being placed backwards.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] Firstly, this utility model proposes a hearing aid main unit.

[0007] The body includes a first shell and a second shell, the first shell is connected to the second shell and forms an accommodating cavity inside, a sound guide is provided at the end of the first shell and a connecting part is provided at the end of the second shell;

[0008] The circuit module is housed within the accommodating cavity. The circuit module is electrically connected to the connecting part and is used to acquire and amplify external sound sources, and transmit the amplified external sound sources to the human ear through the sound guide.

[0009] The connecting part is equipped with a positioning end, and the connecting part is positioned and connected to the charging box through the positioning end.

[0010] The hearing aid is designed with a body comprising a first housing and a second housing, the first housing being connected to the second housing and forming an internal accommodating cavity. A sound guide is located at one end of the first housing, and a connecting portion is located at the other end of the second housing. A circuit module is disposed within the accommodating cavity and electrically connected to the connecting portion. The circuit module is used to acquire and amplify an external sound source and transmit the amplified sound to the ear through the sound guide. The connecting portion has a positioning end, which is used to position the hearing aid to the charging case. This positioning end facilitates easier positioning on the original positive and negative terminals, improving user comfort and preventing the hearing aid from being placed incorrectly, thus avoiding damage during charging.

[0011] In some embodiments, the connecting part is provided with at least a positive terminal, a negative terminal and a positioning end arranged adjacent to each other, one end of the positive terminal and the negative terminal is connected to the battery cell of the circuit module; the other end of the positive terminal and the negative terminal and the positioning end are connected to the charging box.

[0012] The first and second housings are detachably installed to form an internal cavity.

[0013] In some embodiments, a pull wire is also included, with one end of the pull wire disposed on the second housing and the other end of the pull wire extending away from the housing.

[0014] By setting a pull cord, the hearing aid can be easily removed from the ear, and the pull cord can also help with positioning during the installation of the hearing aid.

[0015] In some embodiments, a boss is also provided on the first housing, and a sound guide port is provided on the surface of the boss.

[0016] The protrusions make it easy to insert into the ear, allowing the sound to be transmitted to the ear through the sound guides on the surface of the protrusions.

[0017] In some embodiments, a pickup port is provided on the second housing.

[0018] The hearing aid picks up external sounds through a pickup port, enabling it to acquire and process those sounds.

[0019] Secondly, this utility model also proposes a hearing aid assembly, comprising:

[0020] Such as the hearing aid main unit mentioned in the first aspect;

[0021] The hearing aid also includes a charging case, comprising a base and a top cover. The top cover is rotatably connected to one side of the base. The base has a first cavity for placing the hearing aid unit for charging. The bottom of the first cavity has a positive charging magnetic post, a negative charging magnetic post, and a positioning magnetic post. The positive charging magnetic post is connected to the positive terminal, and the negative charging magnetic post is connected to the negative terminal to charge the hearing aid unit. The positioning end is connected to the positioning magnetic post for positioning.

[0022] The hearing aid includes the hearing aid main unit as mentioned in the first aspect, and a charging case. The first cavity set in the charging case is used to house the hearing aid main unit. The positive and negative charging magnetic posts and the positioning magnetic posts are set to enable the hearing aid main unit to be quickly positioned by the positioning magnetic posts and the positioning end when it is placed in the first cavity.

[0023] In some embodiments, the positive charging magnetic column, the negative charging magnetic column, and the positioning magnetic column are all provided with a connecting platform, and a magnetic column protrusion is provided in the middle of the connecting platform so as to connect with the inside of the housing through the magnetic column protrusion.

[0024] The positive charging magnetic post, negative charging magnetic post, and positioning magnetic post are all equipped with a connecting platform that abuts against the connecting part, and are electrically connected by extending into the hearing aid main unit through the magnetic post protrusion.

[0025] In some embodiments, the first cavity has the same shape as the connecting part, and the bottom of the first cavity is provided with an opening so that the positive charging magnetic post, the negative charging magnetic post and the positioning magnetic post pass through the opening and connect to the connecting part of the hearing aid main unit.

[0026] An opening is provided at the bottom so that the positive charging magnetic column and the negative charging magnetic column can be connected to the first cavity through the circuit module at the bottom.

[0027] In some embodiments, the charging box is further provided with a second cavity, which is connected to the first cavity to accommodate the pull cable.

[0028] The pull wire is housed through the second cavity.

[0029] In some embodiments, the first cavity is provided with a first slot and a first groove for placing the hearing aid unit into the first cavity; the second cavity is provided with a second slot and a second groove for placing the pull wire into the second cavity.

[0030] The first and second slides make it easier to slide the cord and hearing aid body into the charging case.

[0031] The beneficial effects of this utility model on a hearing aid main unit and hearing aid components are:

[0032] The positioning end makes it easier to locate the original positive and negative ends, thus improving user comfort. It also prevents the hearing aid from being placed backwards, avoiding damage during charging. Attached Figure Description

[0033] Figure 1 This is an exploded view of a hearing aid main unit according to the present invention;

[0034] Figure 2This is a perspective view of a hearing aid component according to the present invention;

[0035] Figure 3 This is a top view of a hearing aid assembly according to the present invention;

[0036] Figure 4 for Figure 1 Enlarged view of part a in the image.

[0037] Figure label:

[0038] 1. Body; 11. First housing; 111. Sound guide; 1111. Boss; 1112. Sound guide port; 12. Second housing; 121. Connecting part; 1211. Positive end; 1212. Negative end; 1213. Positioning end; 1214. Connecting hole; 122. Sound pickup port; 13. Pull cable;

[0039] 2. Circuit module;

[0040] 3. Charging case; 31. Base; 311. First cavity; 3111. First slide groove; 312. Positive charging magnetic post; 313. Negative charging magnetic post; 314. Positioning magnetic post; 315. Connecting platform; 316. Magnetic post protrusion; 317. Second cavity; 3171. Second slide groove; 32. Top cover. Detailed implementation method:

[0041] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of this utility model can be combined with each other. The detailed description in the specific embodiments should be understood as an explanation of the spirit of this utility model and should not be regarded as an improper limitation of this utility model.

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the specific technical solutions of this utility model will be further described in detail below with reference to the accompanying drawings of the embodiments of this utility model. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0043] In the embodiments of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0044] Furthermore, in this embodiment of the invention, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0045] In the embodiments of this utility model, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0046] In embodiments of this invention, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0047] In this embodiment of the invention, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this embodiment of the invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant information in a specific manner.

[0048] Example 1:

[0049] like Figure 1 As shown, this utility model proposes a hearing aid main unit.

[0050] The body 1 includes a first shell 11 and a second shell 12. The first shell 11 is connected to the second shell 12 and forms an accommodating cavity inside. A sound guide 111 is provided at the end of the first shell 11 and a connecting part 121 is provided at the end of the second shell 12.

[0051] Circuit module 2 is disposed in the accommodating cavity. Circuit module 2 is electrically connected to the connecting part 121. Circuit module 2 is used to acquire and amplify external sound sources and transmit the amplified external sound sources to the human ear through the sound guide part 111.

[0052] The connecting part 121 is provided with a positioning end 1213, and the connecting part 121 is positioned and connected to the charging box 3 through the positioning end 1213.

[0053] Specifically, the hearing aid main unit comprises a body 1, which has a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 can be connected by snap-fit, glue, or integral molding. The first housing 11 primarily serves as a sound guide 111 for sound transmission, while the second housing 12 is mainly used to connect to the charging case 3 for charging. The connecting part 121 has a connecting hole 1241 on the second housing 12. A conductive sheet can be placed at the connecting hole 1241, allowing the charging case 3 to be charged or connected via the conductive sheet. A metal ring can be provided on the inner wall of the connecting hole 1241, allowing connection to the circuit module 2 for charging.

[0054] Circuit module 2, disposed within the accommodating cavity, is electrically connected to the connecting part 121. Circuit module 2 is used to acquire and amplify an external sound source, and transmit the amplified external sound source to the human ear through the sound guide 111. Circuit module 2 may include an amplifier to amplify the sound, and may further include a speaker component to output the sound to the human ear through the sound guide 111. The connecting part 121 is used to acquire sound, for example, through a microphone module, and to perform sound processing through a processing module, such as noise reduction, sound equalization, and frequency compression, to optimize the sound, and then transmit the sound to the human ear through the sound guide 111. Circuit module 2, disposed within the accommodating cavity, enables the basic functions of a hearing aid by incorporating a microphone module, amplifier module, speaker module, processing module, and power supply module. Meanwhile, a positioning end 1213 is set. One end of the positioning end 1213 is connected to the circuit module 2, and the other end can abut against the charging box 3 during charging. Positioning is performed by the positioning end 1213. The positioning end 1213 can be positioned by magnetic attraction, snap-fit ​​or other methods.

[0055] The device 1 comprises a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are connected and form an internal accommodating cavity. A sound guide 111 is provided at one end of the first housing 11, and a connecting part 121 and a circuit module 2 are provided at the other end of the second housing 12, both housed within the accommodating cavity. The circuit module 2 is electrically connected to the connecting part 121 and is used to acquire and amplify an external sound source, transmitting the amplified sound to the ear through the sound guide 111. The connecting part 121 has a positioning end 1213, which positions the connecting part 121 to the charging case 3. The positioning end 1213 facilitates easier positioning on the original positive and negative terminals, improving user comfort and preventing the hearing aid from being placed incorrectly, thus avoiding damage during charging.

[0056] Example 2:

[0057] Please refer to the following example: Figure 1 As shown, this embodiment further explains and optimizes the structure proposed in Embodiment 1:

[0058] In some embodiments, the connecting portion 121 is provided with at least a positive terminal 1211, a negative terminal 1212 and a positioning end 1213 arranged adjacently. One end of the positive terminal 1211 and the negative terminal 1212 is connected to the battery cell of the circuit module 2; the other end of the positive terminal 1211 and the negative terminal 1212 and the positioning end 1213 are connected to the charging box 3.

[0059] Specifically, it also includes a positive terminal 1211 and a negative terminal 1212. One end of the positive terminal 1211 and the negative terminal 1212 is connected to the circuit module 2, and the other end can contact the charging box 3 during charging to charge the hearing aid unit and achieve positioning via the positioning end 1213. Generally, the circuit module 2 is provided with positive and negative power supply terminals, which can be connected to the positive terminal 1211 and the negative terminal 1212 respectively. This allows the external power supply to connect the positive and negative terminals of the external power source to the positive and negative terminals 1211 and 1212, further connecting to the positive and negative power supply terminals of the circuit module 2, thereby charging the power module of the hearing aid unit.

[0060] In some embodiments, a pull wire 13 is also included, one end of which is disposed on the second housing 12, and the other end of which extends away from the housing.

[0061] Specifically, a pull cord 13 is also provided. One end of the pull cord 13 can be snapped onto the second housing 12. A slot can be provided in the second housing 12, and a groove can be provided in the pull cord 13. The pull cord 13 is snapped into the slot by the elasticity of the groove, so as to realize the installation of the pull cord 13. By providing a pull cord 13, the hearing aid can be easily removed from the ear, and the pull cord 13 can also play a role in assisting in positioning during the installation of the hearing aid.

[0062] In some embodiments, the sound guide portion 111 is further provided with a boss 1111, and the surface of the boss 1111 is provided with a sound guide port 1112.

[0063] Specifically, the sound guide 111 is also provided with a protrusion 1111, which can be used to snap on an earplug or ear cap to facilitate the insertion of the hearing aid into the ear. A sound guide port 1112 is provided on the surface of the protrusion 1111 to conduct the processed sound into the ear. The protrusion 1111 on the sound guide 1111 facilitates insertion into the ear, allowing the sound guide port 1112 on the surface of the protrusion 1111 to transmit sound into the ear.

[0064] In some embodiments, the second housing 12 is provided with a pickup port 122.

[0065] Specifically, the pickup port 122 can be located at the bottom of the second housing 12, more specifically between the positive terminal 1211, the negative terminal 1212, and the positioning end 1213. The pickup port 122 can be aligned with the microphone module located inside the hearing aid for sound pickup. By picking up external sounds through the pickup port 122, the hearing aid can acquire and process external sounds.

[0066] Example 3:

[0067] like Figures 2-4 As shown, this embodiment also proposes a hearing aid component, including:

[0068] The hearing aid main unit as described in Examples 1 and 2;

[0069] The charging case 3 includes a base 31 and a top cover 32. The top cover 32 is rotatably connected to one side of the base 31. The base 31 has a first cavity 311, which can hold the hearing aid main unit for charging. The bottom of the first cavity 311 has a positive charging magnetic post 312, a negative charging magnetic post 313, and a positioning magnetic post 314. The positive charging magnetic post 312 is connected to the positive terminal 1211, and the negative charging magnetic post 313 is connected to the negative terminal 1212 to charge the hearing aid main unit. The positioning terminal 1213 is connected to the positioning magnetic post 314 for positioning.

[0070] Specifically, it also includes the hearing aid main unit mentioned in Embodiments 1 and 2, and the matching charging case 3. The base 31 has at least two first cavities 311 to house the hearing aid main units for the left and right ears. The two first cavities 311 are identical in shape and symmetrically arranged on the base 31. A positive charging magnetic post 312, a negative charging magnetic post 313, and a positioning magnetic post 314 are provided at the bottom of the first cavity 311. These three magnetic posts pass through the bottom of the first cavity 311, allowing the hearing aid main unit to be charged. With only the positive charging magnetic post 312 and the negative charging magnetic post 313, there are only two points of positioning. However, with the addition of the positioning magnetic post 314, angular positioning can be achieved within the first cavity 311 by forming a triangle-like structure at three points. In this embodiment, a metal element is provided inside the positioning end 1213, which is attracted by the positioning magnetic post 314 for auxiliary positioning.

[0071] The hearing aid includes a hearing aid main unit as mentioned in the first aspect, and a charging box 3. The first cavity 311 provided in the charging box 3 is used to house the hearing aid main unit. The positive and negative charging magnetic posts 313 and the positioning magnetic posts 314 are provided to enable the hearing aid main unit to be quickly positioned by the positioning magnetic posts 314 and the positioning end 1213 when it is placed in the first cavity 311.

[0072] In some embodiments, the positive charging magnetic post 312, the negative charging magnetic post 313, and the positioning magnetic post 314 are all provided with a connecting platform 315, and a magnetic post protrusion 316 is provided in the middle of the connecting platform 315 so as to connect with the inside of the housing through the magnetic post protrusion 316.

[0073] Specifically, the positive charging magnetic post 312, the negative charging magnetic post 313, and the positioning magnetic post 314 are all provided with a connecting platform 315. The width of the connecting platform 315 can be smaller than the width of the connecting hole 1241 provided in the connecting part 121, so that the connecting platform 315 can be inserted into the connecting hole 1241, and the side wall of the connecting platform 315 can abut against the connecting hole 1241. When a metal ring is provided on the inner wall of the connecting hole 1241, a connecting metal can also be provided on the side wall of the connecting platform 315, so that the charging magnetic post, the negative charging magnetic post 313, and the positioning magnetic post 314 are electrically connected to the positive and negative power supply terminals of the hearing aid circuit module 2 for charging. Furthermore, through the provided magnetic core protrusion, it can further extend into the hearing aid main unit and abut against the power supply terminal of the circuit module 2 to improve the stability of charging.

[0074] The positive charging magnetic post 312, the negative charging magnetic post 313, and the positioning magnetic post 314 are all provided with a connecting platform 315 that abuts against the connecting part 121, and are electrically connected by extending into the hearing aid host through the magnetic post protrusion 316.

[0075] In some embodiments, the bottom of the first cavity 311 is provided with an opening so that the positive charging magnetic post 312, the negative charging magnetic post 313 and the positioning magnetic post 314 pass through the opening and connect to the connection part 121 of the hearing aid host.

[0076] Specifically, an opening is provided at the bottom of the first cavity 311. The positive charging magnetic post 312, the negative charging magnetic post 313, and the positioning magnetic post 314 pass through the opening and connect to the connection part 121 of the hearing aid main unit. The circuit board of the charging box 3 is located below the charging box 3. In this way, the power supply end of the circuit board of the charging box 3 can be extended into the first cavity 311. When the hearing aid main unit is placed in the first cavity 311, it can be connected to the positive charging magnetic post 312, the negative charging magnetic post 313, and the positioning magnetic post 314 for charging. At the same time, the opening limits the relative displacement of the positive charging magnetic post 312, the negative charging magnetic post 313, and the positioning magnetic post 314 when the hearing aid main unit is placed in the first cavity 311, which would cause instability and misalignment.

[0077] An opening is provided at the bottom so that the positive charging magnetic post 312 and the negative charging magnetic post 313 can be connected to the first cavity 311 through the circuit module 2 at the bottom.

[0078] In some embodiments, the charging box 3 is further provided with a second cavity 317, which is connected to the first cavity 311 to accommodate the pull wire 13.

[0079] Specifically, a second cavity 317 is also provided, which is connected to the first cavity 311. More specifically, the second cavity 317 is located on one side of the first cavity 311, so that when placing the hearing aid main unit, the pull cord 13 can be placed at the same time, and the placement angle can be quickly determined by the direction of the pull cord 13.

[0080] By providing a third cavity to house the pull wire 13, the pull wire 13 can also assist in the positioning of the hearing aid unit during placement.

[0081] In some embodiments, the first cavity 311 has a first slot, and the first slot is provided with a first sliding groove 3111 for placing the hearing aid main unit into the first cavity 311; the second cavity 317 is provided with a second slot, and the second slot is provided with a second sliding groove 3171 for placing the pull wire 13 into the second cavity 317.

[0082] Specifically, the first cavity 311 is provided with a first slot for placing the hearing aid unit into the first cavity 311. A first sliding groove 3111 is provided around the first slot, which allows the hearing aid unit to be quickly slid into the first cavity 311. The second cavity 317 is provided with a second slot so that when the hearing aid unit is placed, the pull wire 13 extends into the second cavity 317 through the second slot. The second sliding groove 3171 makes it easy for the pull wire 13 to slide into the second slot and further into the second cavity 317.

[0083] The first and second slides 3171 facilitate the easy sliding of the cable 13 and the hearing aid body into the charging case 3.

[0084] The serial numbers of the utility model embodiments are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are only preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent device or equivalent process transformation made based on the content of this utility model specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this utility model.

Claims

1. A hearing aid main unit, characterized in that, The body (1) includes a first shell (11) and a second shell (12). The first shell (11) is connected to the second shell (12) and forms an accommodating cavity inside. The first shell (11) is provided with a sound guide (111) at its end, and the second shell (12) is provided with a connecting part (121) at its end. A circuit module (2) is disposed in the accommodating cavity. The circuit module (2) is electrically connected to the connecting part (121). The circuit module (2) is used to acquire and amplify an external sound source and transmit the amplified external sound source to the human ear through the sound guide part (111). The connecting part (121) is provided with a positioning end (1213), and the connecting part (121) is positioned and connected to the charging box (3) through the positioning end (1213).

2. The hearing aid main unit according to claim 1, characterized in that, The connecting part (121) is provided with at least a positive terminal (1211), a negative terminal (1212) and a positioning end (1213) arranged adjacent to each other. One end of the positive terminal (1211) and the negative terminal (1212) is connected to the battery cell of the circuit module (2); the other end of the positive terminal (1211) and the negative terminal (1212) and the positioning end (1213) are connected to the charging box (3).

3. The hearing aid main unit according to claim 1, characterized in that, It also includes a pull wire (13), one end of which is disposed on the second housing (12), and the other end of which extends away from the housing.

4. The hearing aid main unit according to claim 1, characterized in that, The sound guide (111) is also provided with a boss (1111), and the surface of the boss (1111) is provided with a sound guide port (1112).

5. A hearing aid main unit according to claim 1, characterized in that, The second housing (12) is provided with a pickup port (122).

6. A hearing aid assembly, characterized in that, include: The hearing aid main unit as described in any one of claims 1-5; The charging case (3) includes a base (31) and a top cover (32). The top cover (32) is rotatably connected to one side of the base (31). A first cavity (311) is provided on the base (31). The first cavity (311) can hold the hearing aid main unit for charging. A positive charging magnetic post (312), a negative charging magnetic post (313), and a positioning magnetic post (314) are provided at the bottom of the first cavity (311). The positive charging magnetic post (312) is connected to the positive terminal (1211), and the negative charging magnetic post (313) is connected to the negative terminal (1212) to charge the hearing aid main unit. The positioning end (1213) is connected to the positioning magnetic post (314) for positioning.

7. A hearing aid assembly according to claim 6, characterized in that, The positive charging magnetic post (312), the negative charging magnetic post (313) and the positioning magnetic post (314) are all provided with a connecting platform (315). A magnetic post protrusion (316) is provided in the middle of the connecting platform (315) so as to connect with the inside of the hearing aid host through the magnetic post protrusion (316).

8. A hearing aid assembly according to claim 6, characterized in that, The first cavity (311) has the same shape as the connecting part (121), and the bottom of the first cavity (311) is provided with an opening so that the positive charging magnetic post (312), the negative charging magnetic post (313) and the positioning magnetic post (314) pass through the opening and connect to the connecting part (121) of the hearing aid host.

9. The hearing aid assembly according to claim 6, characterized in that, The charging box (3) is also provided with a second cavity (317), which is connected to the first cavity (311) to accommodate the pull wire (13).

10. The hearing aid assembly according to claim 9, characterized in that, The first cavity (311) is provided with a first slot and a first groove (3111) for placing the hearing aid main unit into the first cavity (311); the second cavity (317) is provided with a second slot and a second groove (3171) for placing the pull wire (13) into the second cavity (317).

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