An ear canal hearing aid microphone

Abstract

The application relates to the technical field of hearing aids, and discloses an ear canal type hearing aid sound pickup device which comprises a microphone, the end of the microphone is fixedly connected with a transmission line, the end, away from the microphone, of the transmission line is fixedly connected with a fixing column, and a contact mechanism and a pressure applying mechanism are arranged in the device to solve the problem that a single position of an ear canal is pressed for a long time and causes pain; when a user inserts the fixing column and an output end into the ear canal and withdraws the index finger, a spring sheet drives a sliding ring, a pushing frame and a contact ring to move in the same direction, a rubber block forces a rubber layer I to be outwardly expanded, the outwardly expanded rubber layer I is in contact with the inner wall of the ear canal, when the user swings the fixing column each time, the internal horn pipe will randomly rotate along the inner wall of the annular groove, the rotating angle is different each time, and the supporting position of a rotating plate in the ear canal will also change, so that the phenomenon that the ear canal is pressed and causes pain is reduced because the contact position of the hearing aid and the ear canal is always the same.

Description

Technical Field

[0001] This invention relates to the field of hearing aid technology, specifically to a canal-type hearing aid pickup device. Background Technology

[0002] With the development of modern technology, hearing aid technology has been significantly improved. There are many types of hearing aids on the market, among which in-ear hearing aids are the most common. In-ear hearing aids are widely popular because they are small, discreet, easy to wear, and effectively improve sound clarity.

[0003] In-the-ear hearing aids are equipped with rubber rings to prevent the mixing of internal and external sounds, reducing the impact of external noise on the ear canal. To ensure good sound insulation, the rubber rings are kept in close contact with the ear canal. However, with prolonged wear, the same position in the ear canal will be subjected to pressure for an extended period, leading to pain inside the ear canal. To address these issues, the following solutions are proposed. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides an in-ear hearing aid pickup device, including a microphone. A transmission line is fixedly connected to one end of the microphone, and a fixing post is fixedly connected to the end of the transmission line away from the microphone. An output terminal is fixedly connected to the outer wall of the fixing post. The microphone internally includes an electret / MEMS air conduction microphone and a bone conduction microphone, and further includes:

[0005] The pressure mechanism is fixedly connected to the outer wall of the output end.

[0006] The contact mechanism is fixedly connected to the outer wall of the fixed column.

[0007] The pressure applying mechanism is fixedly connected to the outer wall of the fixed column;

[0008] When it is necessary to change the pressure position inside the ear canal, the user separates the pressure application mechanism and the pressure mechanism with their fingers, and then shakes the output end.

[0009] Preferably, the pressure mechanism includes:

[0010] A rotating assembly is rotatably connected to the outer wall of the output end.

[0011] The component is pushed to slide onto the outer wall of the fixed column;

[0012] When the push component slides, it will come into contact with the outer wall of the contact mechanism, forcing the contact mechanism to deform.

[0013] Preferably, the contact mechanism includes:

[0014] The shielding component is fixedly connected to the outer wall of the fixed column;

[0015] External support assembly, which is fixedly connected to the outer wall of the rotating assembly;

[0016] When the pushing component slides, the end of the pushing component will contact the inner wall of the outer support component, forcing the outer support component to deform and squeeze the blocking component.

[0017] Preferably, the pressure-applying mechanism includes:

[0018] The separation component is fixedly connected to the side wall of the push component;

[0019] The separating component will drive the pushing component to slide along the outer wall of the fixed column.

[0020] Preferably, the rotating assembly includes an annular groove formed on the outer wall of the output end, an annular plate slidably connected to the inner wall of the annular groove, and a horn tube fixedly connected to the outer wall of the annular plate.

[0021] When the user swings the device, the horn tube will slide along the inner wall of the annular groove due to the influence of centrifugal force.

[0022] Preferably, the pushing assembly includes a sliding ring slidably connected to the outer wall of the fixed column, a pushing frame fixedly connected to the side wall of the sliding ring, and a contact ring fixedly connected to the end of the pushing frame away from the sliding ring;

[0023] When the sliding ring moves toward the output end, the outer wall of the contact ring will contact the inner wall of the outer support assembly, forcing the outer support assembly to deform.

[0024] Preferably, the shielding component includes a rubber layer one fixedly connected to the outer wall of the fixed column, and a rubber layer two fixedly connected to the outer wall of the output end;

[0025] As the sliding ring moves toward the output end, the distance between the two ends of the second rubber layer will decrease, causing the second rubber layer to change from a state of being tightly attached to the outside of the sliding ring to a zigzag state.

[0026] Preferably, the external support assembly includes four fixed blocks fixedly connected to the outer wall of the horn tube, a rotating plate rotatably connected to the inner wall of the four fixed blocks, an inclined plate fixedly connected to the inner wall of the rotating plate, and a rubber block fixedly connected to the end of the rotating plate away from the fixed blocks.

[0027] When the contact ring moves toward the output end, the outer wall of the contact ring contacts the outer wall of the inclined panel, forcing the rotating plate to rotate outward around the connection point, while the rubber block forces the second rubber layer to expand outward.

[0028] Preferably, the separating component includes a fixed ring fixedly connected to the side wall of the sliding ring, a spring sheet fixedly connected to the inner wall of the fixed ring, and an outer protruding plate fixedly connected to the side wall of the fixed ring.

[0029] When the user needs to install or remove the output end, they need to insert their index finger into the gap between the outer protrusion plate and the fixed post, so that the outer protrusion plate drives the sliding ring away from the output end through the fixed ring.

[0030] Preferably, the end of the rubber layer away from the fixed post is fixedly connected to the outer wall of the sliding ring, and the end of the spring sheet away from the fixed ring is fixedly connected to the outer wall of the fixed post.

[0031] When the fixed ring moves outward, the spring plate will be compressed and deformed, accumulating potential energy. After installation, when the user removes their index finger from between the outer protrusion and the fixed post, the spring plate will release the potential energy and drive the fixed ring to return to its original position.

[0032] The present invention has the following beneficial effects:

[0033] (1) This invention addresses the problem of pain caused by long-term pressure on a single location in the ear canal. The device is equipped with a contact mechanism and a pressure mechanism. When the user inserts the fixed post and the output end into the ear canal and removes their index finger, the spring plate will drive the fixed ring to move along the outer wall of the fixed post toward the output end. At this time, the spring plate will drive the sliding ring, the push frame, and the contact ring to move in the same direction. The outer wall of the contact ring contacts the outer wall of the inclined plate and forces the rotating plate to rotate outward around the connection point. The rubber block forces the rubber layer to expand outward, and the expanded rubber layer will contact the inner wall of the ear canal. The four rubber blocks will form four support points and lock the output end inside the ear canal. With the application of the above components, when the user shakes the fixed post each time, the internal speaker tube will rotate randomly along the inner wall of the annular groove. The angle of rotation is different each time, and the support position of the rotating plate inside the ear canal will also change. With the application of the above components, the phenomenon of pain caused by pressure inside the ear canal is effectively avoided because the contact position between the hearing aid and the ear canal is always the same.

[0034] (2) The present invention utilizes the sliding characteristics of the sliding ring to fix one end of the rubber layer one on the outer wall of the sliding ring. When the sliding ring slides laterally, the distance between the two ends of the rubber layer two will decrease and change from a state of being tightly attached to the outside of the sliding ring to a zigzag state. Since the bending of the rubber layer one is variable, the shape of the rubber layer one is different each time it is bent. Through the application of the above components, the contact surface between the outer wall of the variable and zigzag rubber layer one and the inner wall of the ear canal is also significantly different, effectively reducing the pressure of the sealing area on the inner wall of the ear canal.

[0035] (3) When the output end needs to be pulled outward, the user can pull the outer protruding plate by hand, forcing the outer protruding plate to drive the fixing ring to move laterally. During this process, the fixing ring will drive the pushing component to move synchronously, and the rubber layer will push the outer support component to reset, so that the device can move from the outside. Figure 7 The state changes to Figure 9 In this process, the tortuous rubber layer one will become smooth, and the outward-expanding rubber layer two will also change from an outward-expanding state to a relaxed state. The sealing effect of the shielding component will decrease. Through the application of the above components, the device can reduce the negative pressure inside the ear canal and reduce the damage to the eardrum when it needs to be removed.

[0036] (4) The present invention utilizes the tilting feature of the rotating plate and sets up a separation component inside the device. Before the user's index finger is pulled out, the rubber layer is not in a sealed state. At this time, the fixing post and the output end can slide freely inside the ear canal. There will be no phenomenon of the rubber layer sliding, excessive or reduced air pressure inside the ear canal. Compared with the conventional rubber plug design, it effectively reduces the damage to the cochlea and eardrum caused by the air pressure inside the ear canal when the device is inserted into the ear canal. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0040] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0041] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle;

[0042] Figure 5 This is a cross-sectional schematic diagram of the contact mechanism of the present invention;

[0043] Figure 6 This is a cross-sectional schematic diagram of the rotating component of the present invention;

[0044] Figure 7 This is a cross-sectional schematic diagram of the separation component of the present invention;

[0045] Figure 8 For the present invention Figure 7Enlarged view of point C in the middle;

[0046] Figure 9 This is a cross-sectional schematic diagram of the external support component of the present invention.

[0047] The attached diagram lists the components represented by each number as follows:

[0048] In the diagram: 1. Pressure mechanism; 11. Rotating assembly; 12. Pushing assembly; 13. Microphone; 14. Transmission line; 15. Fixing post; 16. Output end; 111. Annular groove; 112. Annular plate; 113. Speaker tube; 121. Sliding ring; 122. Pushing frame; 123. Contact ring; 2. Contact mechanism; 21. Blocking assembly; 22. External support assembly; 211. Rubber layer one; 212. Rubber layer two; 221. Fixing block; 222. Rotating plate; 223. Slanted plate; 224. Rubber block; 3. Pressure application mechanism; 31. Separation assembly; 311. Fixing ring; 312. Outer convex plate; 313. Spring sheet. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] Example 1, please refer to Figures 1-5 The present invention is a pickup device for an in-ear hearing aid, including a microphone 13, a transmission line 14 fixedly connected to one end of the microphone 13, a fixing post 15 fixedly connected to one end of the transmission line 14 away from the microphone 13, an output terminal 16 fixedly connected to the outer wall of the fixing post 15, and further comprising:

[0051] Pressure mechanism 1 is fixedly connected to the outer wall of the output end 16;

[0052] Contact mechanism 2 is fixedly connected to the outer wall of fixed column 15;

[0053] Pressure applying mechanism 3 is fixedly connected to the outer wall of fixed column 15;

[0054] When it is necessary to change the pressure position inside the ear canal, the user separates the pressure application mechanism 3 and the pressure mechanism 1 with their finger, and then shakes the output end 16.

[0055] Pressure mechanism 1 includes:

[0056] Rotating assembly 11 is rotatably connected to the outer wall of output end 16;

[0057] Push component 12, which is slidably connected to the outer wall of fixed column 15;

[0058] When the pushing component 12 slides, the pushing component 12 will contact the outer wall of the contact mechanism 2 and force the contact mechanism 2 to deform.

[0059] Contact mechanism 2 includes:

[0060] The shielding component 21 is fixedly connected to the outer wall of the fixed column 15;

[0061] External support assembly 22 is fixedly connected to the outer wall of rotating assembly 11;

[0062] When the pushing component 12 slides, the end of the pushing component 12 will contact the inner wall of the outer support component 22, forcing the outer support component 22 to deform and squeeze the blocking component 21.

[0063] Pressure application mechanism 3 includes:

[0064] Separation component 31 is fixedly connected to the side wall of push component 12;

[0065] The separating component 31 will drive the pushing component 12 to slide along the outer wall of the fixed column 15.

[0066] Example 2, please refer to Figures 2-9 The present invention is a pickup device for an in-ear hearing aid. Based on Example 1, the rotating component 11 includes an annular groove 111 opened on the outer wall of the output end 16, an annular plate 112 is slidably connected to the inner wall of the annular groove 111, and a speaker tube 113 is fixedly connected to the outer wall of the annular plate 112.

[0067] When the user swings the device, the horn tube 113 will slide along the inner wall of the annular groove 111 under the influence of centrifugal force.

[0068] The pushing assembly 12 includes a sliding ring 121 slidably connected to the outer wall of the fixed column 15, a pushing frame 122 fixedly connected to the side wall of the sliding ring 121, and a contact ring 123 fixedly connected to the end of the pushing frame 122 away from the sliding ring 121.

[0069] When the sliding ring 121 moves toward the output end 16, the outer wall of the contact ring 123 will contact the inner wall of the outer support assembly 22, and force the outer support assembly 22 to deform.

[0070] The shielding component 21 includes a rubber layer 211 fixedly connected to the outer wall of the fixed column 15, and a rubber layer 212 fixedly connected to the outer wall of the output end 16.

[0071] Utilizing the sliding characteristic of the aforementioned sliding ring 121, one end of the rubber layer 211 is fixedly installed on the outer wall of the sliding ring 121. When the sliding ring 121 slides laterally, the distance between the two ends of the rubber layer 212 will decrease, and the state will change from being tightly attached to the outside of the sliding ring 121 to a zigzag state. Since the bending of the rubber layer 211 is variable, the shape of the rubber layer 211 is different each time it bends. Through the application of the above components, the contact surface between the variable and zigzag outer wall of the rubber layer 211 and the inner wall of the ear canal is also significantly different, effectively reducing the compression of the inner wall of the ear canal by the sealing area.

[0072] The external support assembly 22 includes four fixed blocks 221 fixedly connected to the outer wall of the horn tube 113. A rotating plate 222 is rotatably connected to the inner wall of the four fixed blocks 221. An inclined plate 223 is fixedly connected to the inner wall of the rotating plate 222. A rubber block 224 is fixedly connected to the end of the rotating plate 222 away from the fixed blocks 221.

[0073] Taking advantage of the tilted nature of the rotating plate 222, a separation component 31 is installed inside the device. Before the user's index finger is removed, the rubber layer 211 is not in a sealed state. At this time, the fixing post 15 and the output end 16 can slide freely inside the ear canal. There will be no phenomenon of the rubber layer 211 sliding, excessive or reduced air pressure inside the ear canal. Compared with the conventional rubber plug design, it effectively reduces the damage to the cochlea and eardrum caused by the air pressure inside the ear canal when the device is inserted into the ear canal.

[0074] The separation assembly 31 includes a fixed ring 311 fixedly connected to the side wall of the sliding ring 121, a spring sheet 313 fixedly connected to the inner wall of the fixed ring 311, and an outer protrusion plate 312 fixedly connected to the side wall of the fixed ring 311.

[0075] Before use, the index finger needs to be inserted into the gap between the outer protrusion plate 312 and the fixing post 15. At this time, the outer protrusion plate 312 and the fixing post 15 will hold the index finger. At the same time, the outer protrusion plate 312 will drive the sliding ring 121 away from the output end 16 through the fixing ring 311. Then the user swings the fixing post 15, and the speaker tube 113 will rotate and slide along the inner wall of the annular groove 111. Then the microphone 13 is placed behind the ear, and the user inserts the output end 16 and the fixing post 15 into the ear canal with the index finger.

[0076] To address the issue of pain caused by prolonged pressure on a single point in the ear canal, the device incorporates a contact mechanism 2 and a pressure application mechanism 3. When the user inserts the fixing post 15 and the output end 16 into the ear canal and removes their index finger, the spring plate 313 drives the fixing ring 311 to move along the outer wall of the fixing post 15 towards the output end 16. Simultaneously, the spring plate 313 drives the sliding ring 121, the pusher frame 122, and the contact ring 123 to move in the same direction. The outer wall of the contact ring 123 contacts the outer wall of the inclined panel 223, forcing the rotating plate 222 to rotate outwards around the connection point. Meanwhile, the rubber block 224 forces the rubber... The second rubber layer 212 extends outward, while the outwardly extended first rubber layer 211 contacts the inner wall of the ear canal. The four rubber blocks 224 form four support points and hold the output end 16 inside the ear canal. With the application of the above components, when the user shakes the fixing post 15 each time, the internal speaker tube 113 will rotate randomly along the inner wall of the annular groove 111. The angle of rotation is different each time, and the support position of the rotating plate 222 inside the ear canal will also change. With the application of the above components, the phenomenon of pain caused by pressure inside the ear canal is effectively avoided because the contact position between the hearing aid and the ear canal is always the same.

[0077] The end of the rubber layer 211 away from the fixed post 15 is fixedly connected to the outer wall of the sliding ring 121, and the end of the spring sheet 313 away from the fixed ring 311 is fixedly connected to the outer wall of the fixed post 15.

[0078] When the output end 16 needs to be pulled outward, the user can pull the outer protrusion 312, forcing the outer protrusion 312 to move the fixing ring 311 laterally. During this process, the fixing ring 311 will drive the pushing component 12 to move synchronously, and the rubber layer 212 will push the outer support component 22 to reset, so that the device can move from the external position. Figure 7 The state changes to Figure 9 During this process, the tortuous rubber layer 211 will become smooth, and the outward-expanding rubber layer 212 will change from an outward-expanding state to a relaxed state. The sealing effect of the shielding component 21 will decrease. Through the application of the above components, the device can reduce the negative pressure inside the ear canal that could damage the eardrum when it needs to be removed.

[0079] A specific application of this embodiment is as follows: Before using the present invention, the index finger needs to be inserted into the gap between the outer protrusion plate 312 and the fixing post 15. At this time, the outer protrusion plate 312 and the fixing post 15 will clamp the index finger. At the same time, the outer protrusion plate 312 drives the sliding ring 121 away from the output end 16 through the fixing ring 311. Then the user swings the fixing post 15, and the speaker tube 113 will rotate and slide along the inner wall of the annular groove 111. Then the microphone 13 is placed behind the ear, and the user inserts the output end 16 and the fixing post 15 into the ear canal with the index finger.

[0080] To address the issue of pain caused by prolonged pressure on a single point in the ear canal, the device incorporates a contact mechanism 2 and a pressure application mechanism 3. When the user inserts the fixing post 15 and the output end 16 into the ear canal and removes their index finger, the spring plate 313 drives the fixing ring 311 to move along the outer wall of the fixing post 15 towards the output end 16. Simultaneously, the spring plate 313 drives the sliding ring 121, the pusher frame 122, and the contact ring 123 to move in the same direction. The outer wall of the contact ring 123 contacts the outer wall of the inclined panel 223, forcing the rotating plate 222 to rotate outwards around the connection point. Meanwhile, the rubber block 224 forces the rubber... The rubber layer 211 extends outward, and the outwardly extended rubber layer 211 will contact the inner wall of the ear canal. The four rubber blocks 224 will form four support points and lock the output end 16 inside the ear canal. With the application of the above components, when the user shakes the fixing post 15 each time, the internal speaker tube 113 will rotate randomly along the inner wall of the annular groove 111. The angle of rotation is different each time, and the support position of the rotating plate 222 inside the ear canal will also change. With the application of the above components, the phenomenon of pain caused by pressure inside the ear canal is effectively avoided because the contact position between the hearing aid and the ear canal is always the same.

[0081] Utilizing the sliding characteristic of the aforementioned sliding ring 121, one end of the rubber layer 211 is fixedly installed on the outer wall of the sliding ring 121. When the sliding ring 121 slides laterally, the distance between the two ends of the rubber layer 212 will decrease, and the state will change from being tightly attached to the outside of the sliding ring 121 to a zigzag state. Since the bending of the rubber layer 211 is variable, the shape of the rubber layer 211 is different each time it bends. Through the application of the above components, the contact surface between the variable and zigzag outer wall of the rubber layer 211 and the inner wall of the ear canal is also significantly different, effectively reducing the compression of the inner wall of the ear canal by the sealing area.

[0082] When the output end 16 needs to be pulled outward, the user can pull the outer protrusion 312, forcing the outer protrusion 312 to move the fixing ring 311 laterally. During this process, the fixing ring 311 will drive the pushing component 12 to move synchronously, and the rubber layer 212 will push the outer support component 22 to reset, so that the device can move from the external position. Figure 7 The state changes to Figure 9 During this process, the tortuous rubber layer 211 will become smooth, and the outward-expanding rubber layer 212 will change from an outward-expanding state to a relaxed state. The sealing effect of the shielding component 21 will decrease. Through the application of the above components, the device can reduce the negative pressure inside the ear canal from damaging the eardrum when it needs to be removed.

[0083] Taking advantage of the tilted nature of the rotating plate 222, a separation component 31 is installed inside the device. Before the user's index finger is pulled out, the rubber layer 211 is not in a sealed state. At this time, the fixing post 15 and the output end 16 can slide freely inside the ear canal. There will be no phenomenon of the rubber layer 211 sliding, excessive or reduced air pressure inside the ear canal. Compared with the conventional rubber plug design, it effectively reduces the damage to the cochlea and eardrum caused by the air pressure inside the ear canal when the device is inserted into the ear canal.

[0084] The working principle of MEMS and other air conduction microphones and bone conduction microphones: Air conduction microphones such as electret / MEMS microphones capture sound by picking up air vibrations, simultaneously picking up three types of sound: the wearer's voice, the oncoming speaker's voice, and ambient noise. The audio picked up by this microphone is converted by an analog-to-digital converter (A / D converter) and then high-pass filtered, denoted as d1(n). d1(n) = s(n) + y1(n) + n(n), where s(n) is the oncoming speaker's voice (the part that needs enhancement), y1(n) is the wearer's voice picked up by the air conduction microphone, and n(n) is the ambient noise (the part that needs suppression). Bone conduction microphones capture sound by picking up bone vibrations, primarily picking up the wearer's voice. The audio picked up by this microphone is converted by an A / D converter and then high-pass filtered, denoted as d2(n), where d2(n) mainly represents the wearer's voice. An adaptive filter is used to estimate the wearer's voice y2(n) from d1(n), i.e., y2(n) = d2(n)*w(n); Subtract the estimated wearer's speech y2(n) from d1(n). The opposing speaker's speech s(n) and environmental noise n(n) are preserved, while the wearer's speech is suppressed, i.e., e(n) = d1(n) - y2(n) = s(n) +n(n) + eyn(n), where eyn(n) = y1(n) - y2(n) is the estimation error of the wearer's speech; Estimate the probability p of the wearer's speech using d2(n) and e(n), and control the update of the adaptive filter w(n), i.e., w(n+1) = w(n) + p*Δ*e(n)*d2(n), where Δ is the update step size of the filter. Different update methods are selected according to different types of filters, including but not limited to LMS / NLMS / RLS / NN neural networks.

[0085] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pickup device for an in-ear hearing aid, comprising a microphone (13), wherein a transmission line (14) is fixedly connected to one end of the microphone (13), a fixing post (15) is fixedly connected to one end of the transmission line (14) away from the microphone (13), and an output terminal (16) is fixedly connected to the outer wall of the fixing post (15), characterized in that, Also includes: Pressure mechanism (1), which is fixedly connected to the outer wall of the output end (16); Contact mechanism (2), which is fixedly connected to the outer wall of the fixed column (15); The pressure applying mechanism (3) is fixedly connected to the outer wall of the fixed column (15); When it is necessary to change the pressure position inside the ear canal, the user separates the pressure mechanism (3) and the pressure mechanism (1) with their finger, and then shakes the output end (16). The pressure mechanism (1) includes: Rotating assembly (11), which is rotatably connected to the outer wall of the output end (16); A pushing component (12) is slidably connected to the outer wall of the fixed column (15); When the pushing component (12) slides, the pushing component (12) will contact the outer wall of the contact mechanism (2) and force the contact mechanism (2) to deform; The contact mechanism (2) includes: A shielding component (21) is fixedly connected to the outer wall of the fixed column (15); An external support assembly (22) is fixedly connected to the outer wall of the rotating assembly (11); When the pushing component (12) slides, the end of the pushing component (12) will contact the inner wall of the outer support component (22), and force the outer support component (22) to deform and squeeze the blocking component (21). The rotating assembly (11) includes an annular groove (111) formed on the outer wall of the output end (16), an annular plate (112) is slidably connected to the inner wall of the annular groove (111), and a horn tube (113) is fixedly connected to the outer wall of the annular plate (112). When the user swings the device, the horn tube (113) will slide along the inner wall of the annular groove (111) under the influence of centrifugal force. The pushing assembly (12) includes a sliding ring (121) slidably connected to the outer wall of the fixed column (15), a pushing frame (122) is fixedly connected to the side wall of the sliding ring (121), and a contact ring (123) is fixedly connected to the end of the pushing frame (122) away from the sliding ring (121). When the sliding ring (121) moves toward the output end (16), the outer wall of the contact ring (123) will contact the inner wall of the outer support assembly (22) and force the outer support assembly (22) to deform.

2. The in-ear hearing aid pickup device according to claim 1, characterized in that: The pressure application mechanism (3) includes: Separation component (31), which is fixedly connected to the side wall of the push component (12); Among them, the separation component (31) will drive the pushing component (12) to slide along the outer wall of the fixed column (15).

3. The in-ear hearing aid pickup device according to claim 2, characterized in that: The shielding component (21) includes a rubber layer one (211) fixedly connected to the outer wall of the fixed column (15), and a rubber layer two (212) fixedly connected to the outer wall of the output end (16). As the sliding ring (121) moves toward the output end (16), the distance between the two ends of the second rubber layer (212) will be reduced, causing the second rubber layer (212) to change from a state of being tightly attached to the outside of the sliding ring (121) to a zigzag state.

4. The in-ear hearing aid pickup device according to claim 3, characterized in that: The external support assembly (22) includes four fixed blocks (221) fixedly connected to the outer wall of the horn tube (113), a rotating plate (222) rotatably connected to the inner wall of the four fixed blocks (221), an inclined plate (223) fixedly connected to the inner wall of the rotating plate (222), and a rubber block (224) fixedly connected to one end of the rotating plate (222) away from the fixed blocks (221). When the contact ring (123) moves toward the output end (16), the outer wall of the contact ring (123) contacts the outer wall of the inclined panel (223), and forces the rotating plate (222) to rotate outward around the connection point, while the rubber block (224) forces the second rubber layer (212) to expand outward.

5. The in-ear hearing aid pickup device according to claim 4, characterized in that: The separation assembly (31) includes a fixed ring (311) fixedly connected to the side wall of the sliding ring (121), a spring plate (313) fixedly connected to the inner wall of the fixed ring (311), and an outer protruding plate (312) fixedly connected to the side wall of the fixed ring (311). When the user needs to install or remove the output end (16), the index finger needs to be inserted into the gap between the outer protrusion plate (312) and the fixing post (15) so that the outer protrusion plate (312) drives the sliding ring (121) away from the output end (16) through the fixing ring (311). The end of the rubber layer (211) away from the fixed post (15) is fixedly connected to the outer wall of the sliding ring (121), and the end of the spring sheet (313) away from the fixed ring (311) is fixedly connected to the outer wall of the fixed post (15). When the fixed ring (311) moves outward, the spring plate (313) will be compressed and deformed, and accumulate potential energy. After installation, when the user's index finger is removed between the outer protrusion plate (312) and the fixed post (15), the spring plate (313) will release potential energy and drive the fixed ring (311) to reset.

6. A cannula hearing aid pickup system, applicable to a cannula hearing aid pickup device as described in claim 5, comprising an electret / MEMS air conduction microphone, a bone conduction microphone, an AD converter, a high-pass filter, a preprocessor, and a post-processor, characterized in that: The MEMS air conduction microphone array arrangement significantly improves the accuracy of voice recognition of the wearer by fusing bone conduction signals and air conduction signals. The electret / MEMS air conduction microphones capture sound by capturing air vibrations, and the preprocessor and postprocessor simultaneously pick up three types of sounds: the wearer, the speaker in front of them, and environmental noise. The preprocessor and postprocessor perform modulation processing on the audio picked up by the microphone through AD conversion and high-pass filtering, and the specific operation process is as follows: S1: AD conversion and high-pass filtering label the three types of sound as d1(n), d1(n) = s(n) + y1(n) + n(n), where s(n) is the speech of the speaker facing you, which is the part that needs to be enhanced, y1(n) is the speech of the wearer picked up by the air conduction microphone, n(n) is the ambient noise, and y1(n) is the part that needs to be suppressed; S2: A collaborative processing algorithm deployed on DSP / MCU / NPU utilizes the strong correlation of bone conduction signals to suppress the wearer's voice while preserving the voice of the person speaking to the other. The bone conduction microphone picks up sound by capturing bone vibrations, primarily capturing the wearer's voice. The audio picked up by this microphone is converted by AD and filtered by a high-pass filter and denoted as d2(n). d2(n) mainly represents the wearer's voice. Through an adaptive filter, the wearer's voice y2(n) in d1(n) is estimated, i.e., y2(n) = d2(n)*w(n). Subtracting the estimated wearer's voice y2(n) from d1(n) preserves the voice of the person speaking to the other, s(n), and the ambient noise n(n), while suppressing the wearer's voice. That is, e(n) = d1(n) - y2(n) = s(n) + n(n) + eyn(n), where eyn(n) = y1(n) - y2(n) is the estimation error of the wearer's voice. S3: Estimate the probability p of the wearer's speech using d2(n) and e(n), and control the update of the adaptive filter w(n), i.e., w(n+1) = w(n) + p*Δ*e(n)*d2(n), where Δ is the update step size of the filter. Different update methods are selected according to different types of filters, including but not limited to LMS / NLMS / RLS / NN neural networks.

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