A remote high-fidelity sound pickup device for hearing aids

Abstract

This utility model discloses a remote high-fidelity sound pickup device for hearing aids, including a housing and a PCB board installed inside the housing. A sound guiding structure is provided on one side of the housing, and a mounting plate is installed on the PCB board. A main microphone and a plurality of slave microphones arranged around the main microphone are positioned between the side of the mounting plate away from the PCB board and the sound guiding structure. The sound guiding structure includes a main channel and at least one slave channel arranged around the main channel. The main channel gradually narrows from the opening end to the first countersunk groove, allowing the main microphone to obtain a larger sound acquisition area in the axial direction. The slave channel has a plurality of slave sound holes arranged circumferentially, allowing the multiple slave microphones to capture sound from different directions, thereby compensating for the directional defects of the main microphone and realizing omnidirectional sound acquisition. The main microphone and slave microphones are integrated on the same side of the hearing aid, occupying a small volume.

Description

Technical Field

[0001] This utility model relates to the field of hearing aid technology, and in particular to a remote high-fidelity sound pickup device for hearing aids. Background Technology

[0002] Multi-microphone pickup technology uses multiple microphones to collect sound signals from different directions. These signals are analyzed and processed by the digital signal processor (DSP) inside the hearing aid. The algorithm synthesizes, enhances and filters the sound signals collected by different microphones, thereby improving the clarity and directionality of the sound and capturing the details of the sound more accurately.

[0003] Chinese Patent Publication No. N210958798U discloses a surround-type microphone unit, including a housing and a main microphone and slave microphones disposed within the housing. Multiple slave microphones are included. The main microphone is mounted on the top surface of the housing, and the multiple slave microphones are evenly distributed on the outer side walls of the housing. Each slave microphone and the main microphone form an independently controllable dual-microphone subsystem. Each dual-microphone subsystem is configured to collect sound from the direction pointed by the slave microphone. A sound pickup device using the above-described microphone unit and a hearing aid device using the above-described sound pickup device are also disclosed. This utility model's microphone unit is equipped with multiple independently controllable dual-microphone subsystems formed by slave microphones and the main microphone, which can effectively collect sound from different directions, thereby improving or enhancing the user's auditory recognition ability in noisy environments.

[0004] In the aforementioned technology, the slave microphones are evenly distributed on the outer wall of the housing. Although this allows for omnidirectional sound acquisition, the distance between the microphones is relatively large, making it difficult to rationally arrange the internal electronic components and resulting in a lack of integrated design. This increases the overall size of the device, making the hearing aid uncomfortable to wear and less discreet, thus leading to a poor user experience. Therefore, this utility model discloses a remote high-fidelity sound pickup device for hearing aids to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a remote high-fidelity sound pickup device for hearing aids, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following solution to the aforementioned technical problems:

[0007] A remote high-fidelity sound pickup device for hearing aids includes a housing and a PCB board installed inside the housing. A sound guiding structure is provided on one side of the housing. A mounting plate is installed on the PCB board, and a main microphone and a plurality of slave microphones are provided between the side of the mounting plate away from the PCB board and the sound guiding structure.

[0008] The sound guiding structure includes a main channel and at least one subordinate channel arranged around the main channel. The subordinate channel has multiple subordinate sound holes arranged away from the main channel. The main channel corresponds to the main microphone, and the subordinate channel corresponds to the subordinate microphone.

[0009] As a further embodiment of this utility model, the main channel is provided with a first countersunk groove corresponding to the main microphone, and the subordinate channel is provided with a second countersunk groove corresponding to the subordinate microphone.

[0010] As a further embodiment of this utility model, the main channel is gradually narrowed from its opening end to the end where the first countersunk groove is located.

[0011] As a further embodiment of this utility model, the subordinate channel is gradually narrowed from the end where the subordinate sound hole is located to the end where the second countersunk groove is located.

[0012] As a further embodiment of this utility model, the mounting plate includes a mounting part and an elastic part with a "U"-shaped structure. One end of the elastic part is fixed to the PCB board with screws, and the other end of the elastic part is fixed to the mounting part.

[0013] As a further embodiment of this utility model, the mounting part is provided with a main positioning groove and a plurality of subordinate positioning grooves arranged around the main positioning groove on the side away from the PCB board. The main positioning groove is used to accommodate the main microphone, and the subordinate positioning grooves are used to accommodate the subordinate microphones. Both the main positioning groove and the subordinate positioning grooves have wire holes.

[0014] As a further embodiment of this utility model, a plurality of screw cylinders are evenly distributed on the inner wall of the housing, and a PCB board is fixed between the plurality of screw cylinders by screws.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a remote high-fidelity sound pickup device for hearing aids. The main channel gradually narrows from the open end to the first countersunk groove, allowing the main microphone to obtain a larger sound acquisition area in the axial direction. The subordinate channel has multiple subordinate sound holes arranged circumferentially, enabling multiple subordinate microphones to capture sound from different directions, thereby compensating for the directional defects of the main microphone and realizing omnidirectional sound acquisition. The main microphone and subordinate microphones are integrated on the same side of the hearing aid, occupying a small volume, which is conducive to the miniaturization of hearing aids. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a side sectional view of a remote high-fidelity sound pickup device for hearing aids according to the present invention.

[0018] Figure 2 This is a cross-sectional view of the housing and sound guiding structure in a remote high-fidelity sound pickup device for a hearing aid according to the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the mounting plate in a remote high-fidelity sound pickup device for hearing aids according to the present invention.

[0020] The components represented by each number in the attached diagram are listed below: 1. Housing; 2. PCB board; 3. Sound guide structure; 4. Mounting plate; 5. Main microphone; 6. Slave microphone; 11. Screw barrel; 31. Main channel; 32. Slave channel; 321. Slave sound hole; 311. First countersunk groove; 322. Second countersunk groove; 42. Elastic part; 41. Mounting part; 411. Main positioning groove; 412. Slave positioning groove; 413. Wire hole. Detailed Implementation

[0021] The present invention will be further described below with reference to the embodiments.

[0022] Please see Figure 1-3 This utility model provides a remote high-fidelity sound pickup device for hearing aids, including a housing 1 and a PCB board 2 installed in the housing 1. Multiple screw cylinders 11 are evenly distributed on the inner wall of the housing 1, and the PCB board 2 is fixed between the multiple screw cylinders 11 by screws.

[0023] Specifically, the screw barrel 11 is a hollow cylindrical structure with a threaded hole inside for mating with a screw. The PCB board 2 has mounting holes corresponding to the threaded hole to facilitate the installation of the PCB board 2 and prevent the PCB board 2 from loosening or shifting due to vibration or external force during use.

[0024] Furthermore, a sound guiding structure 3 is provided on one side of the housing 1. The sound guiding structure 3 includes a main channel 31 and at least one subordinate channel 32 arranged around the main channel 31. The subordinate channel 32 has a plurality of subordinate sound holes 321 arranged away from the main channel 31. The main channel 31 corresponds to the main microphone 5, and the subordinate channel 32 corresponds to the subordinate microphone 6.

[0025] Specifically, the main channel 31 is part of the sound guiding structure 3, used to guide the sound signal to the main microphone 5. The subordinate channel 32 is arranged around the main channel 31, used to guide the sound signal to the subordinate microphone 6. The multiple subordinate sound holes 321 expand the sound acquisition range. It is worth noting that when the sound is located on a certain side, the sound intensity collected by the main microphone 5 or subordinate microphone 6 on that side is the greatest, which can be used as a basis for judging the location of the sound source.

[0026] Furthermore, the main channel 31 is provided with a first countersunk groove 311 corresponding to the main microphone 5, and the slave channel 32 is provided with a second countersunk groove 322 corresponding to the slave microphone 6.

[0027] Specifically, the shape and size of the first countersunk groove 311 match the shape of the main microphone 5 to ensure that the main microphone 5 can be installed securely, and the shape and size of the second countersunk groove 322 match the shape of the slave microphone 6 to ensure that the slave microphone 6 can be installed securely.

[0028] Furthermore, the main channel 31 is gradually narrowed from its open end to the end where the first countersunk groove 311 is located;

[0029] Specifically, by gradually reducing the cross-sectional area of ​​the sound channel, a larger sound acquisition area can be obtained, which can reduce the diffusion and energy loss of sound during propagation, and allow the sound energy to be more concentratedly guided to the main microphone 5, which helps to improve the strength and clarity of the sound signal.

[0030] Furthermore, the subordinate channel 32 is configured to gradually narrow from the end where the subordinate sound hole 321 is located to the end where the second countersunk groove 322 is located;

[0031] Specifically, the slave microphone 321 receives sound from different directions. The gradually narrowing slave microphone 321 can reduce the diffusion and energy loss of sound during propagation, making the sound signal reach the slave microphone 6 more concentrated, which helps to improve the strength and clarity of the sound signal.

[0032] Furthermore, a mounting plate 4 is mounted on the PCB board 2. The mounting plate 4 includes a mounting part 41 and an elastic part 42 with a "U"-shaped structure. One end of the elastic part 42 is fixed to the PCB board 2 with screws, and the other end of the elastic part 42 is fixed to the mounting part 41.

[0033] Specifically, the elastic part 42 of the "U"-shaped structure gives the mounting plate 4 a certain degree of elasticity, allowing the mounting part 41 to apply sufficient pressure to the microphone.

[0034] Furthermore, a main microphone 5 and a plurality of slave microphones 6 are provided between the side of the mounting plate 4 away from the PCB board 2 and the sound guiding structure 3.

[0035] Specifically, the main microphone 5 and the slave microphone 6 are located in the same plane and face the same direction, which simplifies the assembly process and reduces the design burden of hearing aids.

[0036] Furthermore, the mounting part 41 is provided with a main positioning groove 411 and a plurality of subordinate positioning grooves 412 arranged around the main positioning groove 411 on the side away from the PCB board 2. The main positioning groove 411 is used to accommodate the main microphone 5, and the subordinate positioning grooves 412 are used to accommodate the subordinate microphone 6. Both the main positioning groove 411 and the subordinate positioning grooves 412 have wire holes 413.

[0037] Specifically, the main positioning slot 411 and the slave positioning slot 412 ensure the precise positioning of the main microphone 5 and the slave microphone 6 on the mounting plate 4, avoiding positional deviation. The microphone leads are connected to the PCB board 2 through the wire hole 413, ensuring that the sound signal can be transmitted to the hearing aid's digital signal processor.

[0038] Further

[0039] The working principle includes the following installation steps:

[0040] Step 1: Place the main microphone 5 into the main positioning slot 411, place the multiple slave microphones 6 into the slave positioning slots 412 respectively, and connect the microphone leads to the PCB board 2 through the wire hole 413.

[0041] Step 2: Align one end of the elastic part 42 of the mounting plate 4 with the predetermined position on the PCB board 2, and use screws to fix the elastic part 42 to the PCB board 2.

[0042] Step 3: Embed the PCB board 2 into the housing 1 so that the main microphone 5 is inserted into the first countersunk slot 311 and the slave microphone 6 is inserted into the second countersunk slot 322.

[0043] Step 4: Use screws to fix the PCB board 2 to the screw barrel 11, ensuring that the PCB board 2 is tightly connected to the housing 1 and that the installation is secure.

Claims

1. A remote sound high fidelity pickup device for a hearing aid, comprising a housing (1) and a PCB board (2) installed in the housing (1), characterized in that, A sound guiding structure (3) is provided on one side of the housing (1), and a mounting plate (4) is installed on the PCB board (2). A main microphone (5) and a plurality of subordinate microphones (6) are provided between the side of the mounting plate (4) away from the PCB board (2) and the sound guiding structure (3). The sound guiding structure (3) includes a main channel (31) and at least one subordinate channel (32) arranged around the main channel (31). The subordinate channel (32) has a plurality of subordinate sound holes (321) arranged away from the main channel (31). The main channel (31) corresponds to the main microphone (5), and the subordinate channel (32) corresponds to the subordinate microphone (6).

2. A remote sound high fidelity pickup device for a hearing aid according to claim 1, characterized in that: The main channel (31) is provided with a first recessed groove (311) corresponding to the main microphone (5), and the subordinate channel (32) is provided with a second recessed groove (322) corresponding to the subordinate microphone (6).

3. A remote sound high fidelity pickup device for a hearing aid according to claim 1, characterized in that: The main channel (31) is gradually narrowed from its open end to the end where the first countersunk groove (311) is located.

4. A remote high-fidelity sound pickup device for hearing aids according to claim 1, characterized in that: The subordinate channel (32) is gradually narrowed from the end where the subordinate sound hole (321) is located to the end where the second countersunk groove (322) is located.

5. A remote sound high fidelity pickup device for a hearing aid according to claim 1, characterized in that: The mounting plate (4) includes a mounting part (41) and an elastic part (42) with a "U" shaped structure. One end of the elastic part (42) is fixed to the PCB board (2) with screws, and the other end of the elastic part (42) is fixed to the mounting part (41).

6. A remote sound high fidelity pick-up device for a hearing aid according to claim 5, characterized in that: The mounting part (41) is provided with a main positioning groove (411) and a plurality of subordinate positioning grooves (412) arranged around the main positioning groove (411) on the side away from the PCB board (2). The main positioning groove (411) is used to accommodate the main microphone (5), and the subordinate positioning grooves (412) are used to accommodate the subordinate microphones (6). Both the main positioning groove (411) and the subordinate positioning grooves (412) have wire holes (413).

7. A remote sound high fidelity pickup device for a hearing aid according to claim 1, characterized in that: The inner wall of the housing (1) is provided with a plurality of screw cylinders (11) distributed at equal intervals, and a PCB board (2) is fixed between the plurality of screw cylinders (11) by screws.

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