In-ear hearing aid device

Abstract

The present invention discloses an in-ear hearing aid device, including a casing, a movement and a sound output device installed on the casing; the casing at least includes: a hard upper casing; a soft lower casing, which cooperates with the hard upper casing and can be inserted into the ear canal of the user; the hard upper casing is connected to the soft lower casing; the movement is installed in the hard upper casing and is used to process sound signals and / or electrical signals; the sound output device is installed in the soft lower casing; a key switch is arranged on the hard upper casing, the key switch is electrically connected to the movement, and a positive contact and a negative contact connected in series with the key switch are arranged at the connection between the hard upper casing and the soft lower casing. The present invention provides a casing of a combination of soft and hard materials, wherein the upper and lower casings of the casing can be displaced when pressed, thereby realizing self-adaptation, which is not only convenient to operate and highly comfortable, but also can effectively reduce discomfort and reduce the risk of hearing loss.

Description

Technical Field

[0001] The present invention relates to the field of hearing devices, and in particular to an in-ear hearing aid device. Background Art

[0002] Existing in-ear hearing aids use hard material shells. Due to the structural limitations of in-ear hearing aids, their manufacturing process and materials are the same as the UV materials and processes used in dentistry, and the hard shell can protect the internal components of the in-ear hearing aids. However, this structure and material process have some disadvantages, such as the hard shell cannot fit completely with the ear canal skin, and when the fit is very high, it will cause a "hard top", increasing the feeling of blockage and discomfort.

[0003] Another drawback of hard-shell in-ear hearing aids is that they are prone to howling. Since in-ear hearing aids are very small and the distance between the microphone and the speaker is short, sound feedback is very easy to occur, thus limiting the gain and bandwidth of the in-ear hearing aid output.

[0004] On the other hand, general TWS earphones (true wireless earphones) generally use universal silicone earplugs in a hard shell. This method causes a stuffy feeling and easily causes ear canal pain when worn. This pain usually has two factors: first, the hard shell pushes the silicone earplugs to compress the ear canal wall and cause swelling and pain; second, the universal silicone earplugs in the hard shell form an enclosed space with the ear canal, and the playback sound pressure produces a piston effect, resulting in continuous high-pressure reciprocating motion of the eardrum, causing fatigue of the tensor tympani muscles and leading to pain.

[0005] Therefore, external materials and structures placed in the ear canal can cause changes in the physiological functions of the ear canal and hearing. Summary of the invention

[0006] The object of the present invention is to provide an in-ear hearing aid device that can at least solve one of the above problems.

[0007] According to one aspect of the present invention, there is provided an in-ear hearing aid device, comprising a housing, a core and a sound output device mounted on the housing;

[0008] The housing shall at least include:

[0009] a hard upper shell;

[0010] A soft lower shell, matched with the hard upper shell and capable of being inserted into the ear canal of the user;

[0011] The hard upper shell is connected to the soft lower shell;

[0012] The movement is installed in the hard upper shell and is used to process sound signals and / or electrical signals;

[0013] The sound output device is installed in the soft lower shell and is electrically connected to the movement, and is used to play the sound processed by the movement;

[0014] A key switch is arranged on the hard upper shell body, and the key switch is electrically connected to the movement. A positive contact and a negative contact connected in series with the key switch are arranged at the connection between the hard upper shell body and the soft lower shell body.

[0015] Therefore, the present invention adopts a hearing aid device with a completely new structure, which can output sound signals through a sound output device, and the core is mainly equipped with a hearing aid chip to realize data calculation problems such as spectrum analysis, frequency selection, and coding output of sound;

[0016] The housing of the present invention comprises an upper body and a lower body. The upper body is made of a hard polymer material to form a hard upper shell, and the lower body is made of a soft silicone material to form a soft lower shell. When the housing is placed in the ear canal, the soft lower shell can deform and rotate in accordance with the shape of the ear canal, adapting to the shape of the ear canal to ensure fit and comfort.

[0017] By utilizing the human body's instinctive reaction, when the user feels uncomfortable, the user usually presses the ear area. When the user feels uncomfortable, the user can adjust the shape of the body in the ear canal by pressing the hard upper shell. The specific adjustment principle is: when the hard upper shell is pressed, the hard upper shell will move toward the ear canal, pushing the soft lower shell to move deeper into the ear canal. At this time, due to the conical shape of the ear canal, the ear canal will prevent the soft lower shell from moving toward the eardrum. At this time, the hard upper shell continues to move, but due to the obstruction of the soft lower shell, the hard upper shell will "swallow" the soft lower shell, and the soft lower shell will shrink into the hard upper shell. When the pressing stops, the hard upper shell automatically resets, driving the retracted soft lower shell to move outward. At this time, the combination of the soft lower shell and the ear canal changes, the pressure between the ear canal becomes smaller, and the space between the eardrum becomes larger, reducing or eliminating the "piston effect" formed by the enclosed space, thereby improving comfort and safety, and being more in line with the physiological function of human ear hearing.

[0018] More importantly, a push switch and positive and negative contacts are provided. The push switch of the present invention is actually a program switch, which can change the playback mode by pressing it (the playback mode includes but is not limited to: hall mode, square mode, quiet mode, etc.). The specific principle is: when the push switch or the hard upper shell is pressed, the upper and lower shells are displaced, the position between the positive contact and the negative contact changes, the impedance changes, and the output voltage of the listening program controlled by the push switch changes, thereby changing the playback volume. This structure can perform impedance matching according to personal hearing during the production process, control subtle changes in different sound pressure levels, reduce fatigue of the tensor tympani caused by increased sound pressure, thereby alleviating pain and improving comfort, especially improving the comfort of those who use hearing aids for a long time.

[0019] In some embodiments, a first cavity capable of accommodating at least the movement is defined inside the hard upper shell.

[0020] In some embodiments, a second cavity capable of accommodating at least the sound output device is defined inside the soft lower shell.

[0021] In some embodiments, one end of the soft lower shell is provided with a sound outlet hole which is in communication with the second cavity and cooperates with the sound output device.

[0022] In some embodiments, the in-ear hearing aid device further comprises:

[0023] The soft ear cap is mounted outside the soft lower shell and can make the soft lower shell be suspended relative to the user's ear canal.

[0024] Therefore, in specific applications, the hearing aid device can be used in conjunction with soft ear caps such as silicone earplugs. When the casing is placed in the ear canal, since the soft lower shell is suspended relative to the user's ear canal, it can deform (the soft ear cap squeezes the soft lower shell to deform) and rotate (the soft lower shell rotates relative to the soft ear cap) to adapt to the shape of the ear canal, adapting to the shape of the ear canal to ensure fit and comfort.

[0025] In some embodiments, a stopper that cooperates with the soft ear cap is disposed at one end of the soft lower shell, and the sound outlet is provided at the stopper. Thus, the stopper can effectively stop the soft ear cap such as the silicone ear plug mounted on the outside of the soft lower shell to prevent it from falling off during use.

[0026] In some embodiments, a protrusion is provided at one end of the hard upper shell, an opening is provided at one end of the soft lower shell near the hard upper shell to match the protrusion, and a sealing ring is sleeved on the outer periphery of the protrusion and located between the protrusion and the opening, thereby facilitating rapid assembly between the hard upper shell and the soft lower shell.

[0027] In some embodiments, the positive contact is mounted on the raised portion and the negative contact is mounted on the opening portion;

[0028] There are multiple groups of positive contacts, and the multiple groups of positive contacts are sequentially spaced along the extension direction of the protrusion;

[0029] There are multiple groups of negative electrode contacts, and the multiple groups of negative electrode contacts are sequentially spaced apart along the extending direction of the opening.

[0030] In some embodiments, several listening programs are embedded in the movement, and the push switch is a program switch. When relative displacement occurs between the hard upper shell and the soft lower shell, the position between the positive contact and the negative contact changes, and the impedance changes, so that the output voltage of the listening program controlled by the push switch changes, thereby changing the playback volume of the sound output device.

[0031] In some embodiments, a sealing ring is provided at the connection between the hard upper shell and the soft lower shell, the hard upper shell is made of a hard polymer material, and the soft lower shell is made of silicone, and the soft lower shell is elastic and can adapt to the user's ear canal;

[0032] When the hard upper shell is pressed, the hard upper shell will move toward the ear canal, pushing the soft lower shell to move deeper into the ear canal. The ear canal limits the soft lower shell and prevents it from moving toward the eardrum. The hard upper shell continues to move, and the soft lower shell retracts into the hard upper shell. When the pressing stops, the hard upper shell automatically resets, driving the retracted soft lower shell to move outward.

[0033] In some embodiments, the in-ear hearing aid device further comprises:

[0034] A sound pickup device, installed on the hard upper shell and electrically connected to the movement, for collecting external sound signals and converting them into electrical signals;

[0035] The power supply device is installed on the hard upper shell and is electrically connected with the movement, the sound output device and the sound pickup device.

[0036] Therefore, the sound pickup device picks up external sound signals and feeds them back to the movement for corresponding adjustments, ensuring that the user wearing the hearing aid device can clearly receive external sounds; the power supply device can supply power to each electrical component to ensure normal operation.

[0037] In some embodiments, the housing further comprises a cover body, which is detachably mounted on an end of the hard upper housing away from the soft lower housing, a battery compartment matching the power supply device is disposed in the hard upper housing, and a compartment cover matching the battery compartment is disposed on the cover body. Thus, the power supply device can be disassembled through the compartment cover, which is convenient to operate.

[0038] Beneficial effects of the present invention:

[0039] The present invention designs a split housing, which includes an upper body and a lower body. The upper body is made of a hard polymer material to form a hard upper shell, and the lower body is made of a soft silicone material to form a soft lower shell. When the housing is placed in the ear canal, the soft lower shell can deform and rotate in accordance with the shape of the ear canal, adapting to the shape of the ear canal to ensure fit and comfort;

[0040] The in-ear hearing aid device of the present invention includes the housing, is easy to use, has a good fit, is highly comfortable and can effectively protect hearing.

[0041] The present invention provides a casing composed of soft and hard materials, wherein the upper and lower shells of the casing can be displaced when pressed, thereby achieving self-adaptation, which is not only convenient to operate and highly comfortable, but also can effectively reduce discomfort and the risk of hearing loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic diagram of the three-dimensional structure of an in-ear hearing aid device according to one embodiment of the present invention;

[0043] Figure 2 for Figure 1 A schematic diagram of the structure of an in-ear hearing aid device from top view shown;

[0044] Figure 3 for Figure 2 The schematic cross-sectional structure diagram of the in-ear hearing aid device along the AA direction shown;

[0045] Figure 4 for Figure 1 A schematic diagram of the exploded structure of the in-ear hearing aid device shown;

[0046] Figure 5 for Figure 1 A schematic diagram of the three-dimensional structure of the housing of the in-ear hearing aid device shown;

[0047] Figure 6 for Figure 5 One of the exploded structural diagrams of the casing shown;

[0048] Figure 7 for Figure 5 The second schematic diagram of the explosion structure of the casing shown;

[0049] Figure 8 for Figure 1 The simplified circuit structure block diagram of the in-ear hearing aid device is shown.

[0050] Figures 1 to 8 The figure marks in the figure are: 1-movement; 2-casing; 3-sound pickup device; 4-sound output device; 5-power supply device; 6-soft ear cap; 21-hard upper shell; 22-soft lower shell; 23-cover; 211-first cavity; 212-raised portion; 213-battery compartment; 214-button switch; 215-positive contact; 221-second cavity; 222-sound outlet hole; 223-limiting portion; 224-opening portion; 225-negative contact; 231-compartment cover. DETAILED DESCRIPTION

[0051] The present invention will be further described in detail below in conjunction with the specific drawings.

[0052] Figures 1 to 8 An in-ear hearing aid device according to an embodiment of the present invention is schematically shown.

[0053] like Figures 1 to 8 As shown, the in-ear hearing aid device comprises a housing 2, a core 1 mounted on the housing 2, a sound output device 4 and a sound pickup device 3;

[0054] The housing 2 at least comprises:

[0055] A hard upper shell 21;

[0056] A soft lower shell 22, which cooperates with the hard upper shell 21 and can be inserted into the ear canal of the user;

[0057] The hard upper shell 21 is connected to the soft lower shell 22;

[0058] The movement 1 is installed in the hard upper shell 21 and is used to process sound signals and / or electrical signals;

[0059] The sound pickup device 3 is installed on the hard upper shell 21 and is electrically connected to the movement 1, and is used to collect external sound signals and convert them into electrical signals;

[0060] The sound output device 4 is installed in the soft lower shell 22 and is electrically connected to the movement 1, and is used to play the sound processed by the movement 1;

[0061] A key switch 214 is disposed on the hard upper shell 21 , and the key switch 214 is electrically connected to the movement 1 . A positive contact 215 and a negative contact 225 connected in series with the key switch 214 are disposed at the connection between the hard upper shell 21 and the soft lower shell 22 .

[0062] like Figures 5 to 7 As shown, the hard upper shell 21 and the soft lower shell 22 of this embodiment are rotatably connected via a sealing ring.

[0063] A first cavity 211 is formed inside the hard upper shell 21. Thus, the first cavity 211 can be used to accommodate components such as the power supply device 5 and the movement 1.

[0064] A second cavity 221 is provided inside the soft lower shell 22. Thus, the second cavity 221 can be used to accommodate a sound output device 4 such as a speaker or a receiver or a sound player.

[0065] One end of the soft lower shell 22 is provided with a sound outlet 222 which is connected to the second cavity 221. Thus, sound output is facilitated.

[0066] The in-ear hearing aid device of this embodiment further includes a soft ear cap 6 , which is mounted outside the soft lower shell 22 and enables the soft lower shell 22 to be suspended relative to the user's ear canal.

[0067] Therefore, in specific applications, the hearing aid device can be used in conjunction with soft ear caps 6 such as silicone earplugs. When the housing 2 is placed in the ear canal, the soft ear caps 6 play a supporting role, and the soft lower shell 22 is suspended relative to the user's ear canal. It can deform (the soft ear cap 6 squeezes the soft lower shell 22 to deform) and rotate (the soft lower shell 22 rotates relative to the soft ear cap 6) to adapt to the shape of the ear canal, adapt to the shape of the ear canal, and ensure fit and comfort.

[0068] A limiting portion 223 is provided at one end of the soft lower shell 22, and the sound outlet 222 is opened at the limiting portion 223. Thus, the limiting portion 223 is convenient for effectively limiting the soft ear cap 6 such as a silicone ear plug mounted on the outside of the soft lower shell 22 to prevent it from falling off during use. The limiting portion 223 of this embodiment can be a convex ring provided at one end of the soft lower shell near the ear canal.

[0069] A protrusion 212 is provided at one end of the hard upper shell 21, and an opening 224 matching with the protrusion 212 is provided at one end of the soft lower shell 22 close to the hard upper shell 21. The sealing ring is sleeved on the outer periphery of the protrusion 212 and is located between the protrusion 212 and the opening 224. Thus, it is convenient to realize the rapid assembly between the hard upper shell 21 and the soft lower shell 22. The protrusion 212 of this embodiment can be a boss, and the opening 224 is a stepped opening communicating with the second cavity 221.

[0070] The positive contact 215 and the negative contact 225 may be mounted on the hard upper shell 21 or the soft lower shell 22 , respectively.

[0071] In this embodiment, the positive contact 215 is mounted on the hard upper shell 21, and the negative contact 225 is mounted on the soft lower shell 22;

[0072] Preferably, the positive contacts 215 are installed on the outer periphery of the raised portion 212, and are arranged in three groups in sequence along the extension direction of the raised portion 212, each group includes multiple contacts and the multiple contacts are distributed in sequence along the outer periphery of the raised portion 212; the negative contacts 225 are installed on the inner wall of the opening of the opening portion 224, and are arranged in three groups in sequence along the extension direction of the opening portion 224, each group includes multiple contacts and the multiple contacts are distributed in sequence along the inner wall of the opening portion 224.

[0073] The key switch 214 of the present invention is actually a program switch, which can change the playing mode of the sound output device 4 by pressing it. The playing modes include but are not limited to: hall mode, square mode, quiet mode, etc. The listening programs corresponding to these playing modes can be pre-written into the movement 1. The specific principle is: when pressing the key switch 214 or pressing the hard upper shell 21, the upper and lower shells are displaced, the position between the positive contact 215 and the negative contact 225 changes, the impedance changes, and the output voltage of the listening program controlled by the key switch 214 changes, thereby changing the playing volume. This structure can match the impedance according to the individual hearing during the production process and control the subtle changes of different sound pressure levels. Reduce the fatigue of the tensor tympani caused by the increase in sound pressure, thereby reducing pain and improving comfort. In particular, it improves the comfort of hearing aid users for long-term use.

[0074] The cooperation between the multiple groups of positive contacts 215 and the multiple groups of negative contacts 225 in this embodiment is actually an impedance matching method. After the soft lower shell 22 shrinks, the contact positions change, and different contact combinations correspond to different impedances.

[0075] In addition, the number and arrangement of the positive contacts 215 and the negative contacts 225 of the present embodiment can be improved according to actual needs, that is, the contact impedance value can be selected, because each person's hearing is different. For the deaf, the impedance value is configured to be smaller. When the upper and lower shells are displaced, the attenuation amplitude of the output volume of the hearing aid device is reduced.

[0076] In order to facilitate locking, a snap-fit ​​structure may be provided on the protruding portion 212 and the opening portion 224 to achieve detachability and locking.

[0077] The sealing ring of the present invention can be an O-shaped silicone ring, which can be specifically set in a limiting groove of the sealing ring on the raised portion 212, or can be directly fixed to the step surface of the opening 224 by pressing the raised portion 212 against the sealing ring.

[0078] The housing 2 further includes a cover 23, which is detachably mounted on one end of the hard upper housing 21 away from the soft lower housing 22. A battery compartment 213 matching the power supply device 5 is disposed in the hard upper housing 21, and a compartment cover 231 matching the battery compartment 213 is disposed on the cover 23. Thus, the power supply device 5 can be disassembled through the compartment cover 231, which is convenient to operate.

[0079] The in-ear hearing aid device of this embodiment further includes a power supply device 5, which is mounted on the hard upper shell 21 and electrically connected to the movement 1, the sound output device 4, and the sound pickup device 3. Thus, the power supply device 5 can supply power to each electrical component to ensure normal operation.

[0080] The power supply device 5 of this embodiment can be a storage battery or a button battery, etc.

[0081] The battery compartment 213 of this embodiment can be composed of a compartment body that is limitedly matched with the power supply device 5 and positive and negative electrode power supply plates that are electrically connected to the circuit board. The positive and negative electrode power supply plates can realize that the circuit board is a PVB circuit board, and the movement 1 can also be integrated on the circuit board.

[0082] The core 1 of this embodiment may be a DSP chip, the sound output device 4 may be a receiver, and the sound pickup device 3 may be a microphone.

[0083] The soft lower shell 22 and the soft ear cap 6 of this embodiment can be made of a silicone material, which can be flesh-colored, and has the advantages of being non-toxic, not causing allergic reactions, being stable in nature, not easily affected by temperature, not easy to age, having a smooth surface, and being free of impurities.

[0084] The hard upper shell 21 of the present embodiment is made of a hard polymer material, specifically a UV-curable ear shell material. The UV-curable ear shell material is based on a polymer containing a vinyl group (such as unsaturated polyester, acrylic polymer, etc.), an active monomer as a cross-linking agent (such as an active diluent), an easily photodegradable compound as a photosensitizer, and other auxiliary materials. It is cured by ultraviolet light irradiation to produce a free radical reaction.

[0085] The present invention adopts a hearing aid device with a new structure. The hearing aid device can output sound signals through a sound output device 4. The core 1 is mainly equipped with a hearing aid chip to realize data calculation problems such as spectrum analysis, frequency selection, and coding output of sound. The sound pickup device 3 picks up external sound signals and feeds them back to the core 1 for corresponding adjustment, ensuring that the user wearing the hearing aid device can clearly receive external sounds.

[0086] The housing 2 of the present invention includes an upper body and a lower body. The upper body is made of a hard upper shell 21 made of a hard polymer material, and the lower body is made of a soft lower shell 22 made of a soft silicone material. When the housing 2 is placed in the ear canal, the soft lower shell 22 can deform and rotate in accordance with the shape of the ear canal, and adapt to the shape of the ear canal to ensure fit and comfort.

[0087] Taking advantage of the human body's instinctive reaction, when feeling uncomfortable, the user usually presses the ear area. When feeling uncomfortable, the user can adjust the shape of the body in the ear canal by pressing the hard upper shell 21. The specific adjustment principle is: when pressing the hard upper shell 21, the hard upper shell 21 will move toward the ear canal, pushing the soft lower shell 22 to move deeper into the ear canal. At this time, due to the conical shape of the ear canal, the ear canal will prevent the soft lower shell 22 from moving toward the eardrum. At this time, the hard upper shell 21 continues to move, but due to the soft lower shell 2 2 is blocked, the hard upper shell 21 will "swallow" the soft lower shell 22, and the soft lower shell 22 will retract into the hard upper shell 21. When the pressing stops, the hard upper shell 21 automatically resets, driving the retracted soft lower shell 22 to move outward. At this time, the combination of the soft lower shell 22 and the ear canal changes, the pressure between the ear canal decreases, and the space between the soft lower shell 22 and the eardrum increases, reducing or eliminating the "piston effect" formed by the enclosed space, thereby improving comfort and safety, and more in line with the physiological hearing function of the human ear;

[0088] More importantly, a push switch 214 and positive and negative contacts 225 are provided. The push switch 214 of the present invention is actually a program switch, which can change the playback mode by pressing it (the playback mode includes but is not limited to: hall mode, square mode, quiet mode, etc.). The specific principle is: when the push switch 214 is pressed or the hard upper shell 21 is pressed, the upper and lower shells are displaced, the position between the positive contact 215 and the negative contact 225 changes, the impedance changes, and the output voltage of the listening program controlled by the push switch 214 changes, thereby changing the playback volume. This structure can perform impedance matching according to personal hearing during the production process, control subtle changes in different sound pressure levels, reduce fatigue of the tensor tympani caused by increased sound pressure, thereby alleviating pain and improving comfort, especially improving the comfort of those who use hearing aids for a long time.

[0089] In summary, the present invention provides an in-ear hearing aid device with a combined shell 2 of soft and hard materials. The upper and lower shells of the shell 2 of the in-ear hearing aid device can be displaced when pressed, thereby achieving self-adaptation. It is not only easy to operate and comfortable, but also can effectively reduce discomfort and reduce the risk of hearing loss.

[0090] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An in-ear hearing aid device, comprising a housing (2), a core (1) and a sound output device (4) mounted on the housing (2); It is characterized in that The housing (2) at least comprises: A hard upper shell (21); A soft lower shell (22) matched with the hard upper shell (21) and capable of extending into the ear canal of the user; The hard upper shell (21) is connected to the soft lower shell (22); The core (1) is installed in the hard upper shell (21) and is used to process sound signals and / or electrical signals; The sound output device (4) is installed in the soft lower shell (22) and is electrically connected to the movement (1), and is used to play the sound processed by the movement (1); The hard upper shell (21) is provided with a key switch (214), the key switch (214) is electrically connected to the movement (1), and a positive contact (215) and a negative contact (225) connected in series with the key switch (214) are provided at the connection between the hard upper shell (21) and the soft lower shell (22); A sealing ring is provided at the connection between the hard upper shell (21) and the soft lower shell (22); A protrusion (212) is provided at one end of the hard upper shell (21), an opening (224) matching with the protrusion (212) is provided at one end of the soft lower shell (22) close to the hard upper shell (21), and the sealing ring is sleeved on the outer periphery of the protrusion (212) and is located between the protrusion (212) and the opening (224); The positive electrode contact (215) is installed on the protruding portion (212), and the negative electrode contact (225) is installed on the opening portion (224); The positive electrode contacts (215) are multiple groups, and the multiple groups of positive electrode contacts (215) are sequentially spaced apart along the extension direction of the protruding portion (212); The negative electrode contacts (225) are multiple groups, and the multiple groups of negative electrode contacts (225) are sequentially spaced apart along the extension direction of the opening (224); The hard upper shell (21) and the soft lower shell (22) can be displaced when pressed.

2. The in-ear hearing aid device according to claim 1, characterized in that: A first cavity (211) capable of at least accommodating the movement (1) is provided inside the hard upper shell (21).

3. The in-ear hearing aid device according to claim 1, characterized in that: A second cavity (221) capable of at least accommodating the sound output device (4) is provided inside the soft lower shell (22).

4. The in-ear hearing aid device according to claim 3, characterized in that: One end of the soft lower shell (22) is provided with a sound outlet hole (222) which is in communication with the second cavity (221) and matches with the sound output device (4).

5. The in-ear hearing aid device according to claim 4, characterized in that: Also includes: The soft ear cap (6) is mounted outside the soft lower shell (22) and can enable the soft lower shell (22) to be suspended relative to the user's ear canal.

6. The in-ear hearing aid device according to claim 5, characterized in that: One end of the soft lower shell (22) is provided with a limiting portion (223) that cooperates with the soft ear cap (6) in limiting manner, and the sound outlet hole (222) is opened in the limiting portion (223).

7. The in-ear hearing aid device according to any one of claims 1 to 4, characterized in that: The movement (1) has several listening programs embedded in it, and the key switch (214) is a program switch. When relative displacement occurs between the hard upper shell (21) and the soft lower shell (22), the position between the positive contact (215) and the negative contact (225) changes, and the impedance changes, so that the output voltage of the listening program controlled by the key switch (214) changes, thereby changing the playback volume of the sound output device (4).

8. The in-ear hearing aid device according to any one of claims 1 to 4, characterized in that: The hard upper shell (21) is made of a hard polymer material, and the soft lower shell (22) is made of silica gel. The soft lower shell (22) is elastic and can adapt to the ear canal of the user. When the hard upper shell (21) is pressed, the hard upper shell (21) moves toward the ear canal, pushing the soft lower shell (22) to move deeper into the ear canal. The ear canal limits the soft lower shell (22) to prevent the soft lower shell (22) from moving toward the eardrum. The hard upper shell (21) continues to move, and the soft lower shell retracts into the hard upper shell. When the pressing stops, the hard upper shell (21) automatically resets, driving the retracted soft lower shell (22) to move outward.

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