Earphone

Abstract

The present invention relates to the technical field of earphone structures. Disclosed is an earphone. The earphone comprises a housing, a mounting frame, a loudspeaker and a microphone. The housing is provided with an in-ear end, and the in-ear end is provided with an opening. The mounting frame is mounted in the housing and covers the opening, and the mounting frame is provided with a sound production hole and a sound receiving hole which correspond to the opening. The loudspeaker is mounted on the side of the mounting frame facing the interior of the housing, and is arranged corresponding to the sound production hole. The microphone is mounted on the side of the mounting frame facing the interior of the housing, and a sound receiving port in the microphone is communicated with the sound receiving hole in the mounting frame, so as to receive low-frequency heart sounds transmitted through the opening. The present invention aims to provide an earphone capable of better collecting low-frequency heart sound signals.

Description

Earphone

[0001] The present application claims priority to the Chinese patent application No. 202410684070.7, filed on May 29, 2024, entitled "Earphone", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of earphone structure, in particular to an earphone. BACKGROUND

[0003] Nowadays, the working people in the city are under more and more pressure, and negative emotions can easily cause various physical problems, from loss of appetite and mental fatigue to depression and other diseases, so it is necessary to monitor their own health indicators.

[0004] Earphones, mobile phones, watches and other devices are important means of physical indicator monitoring as portable electronic products used frequently by ordinary people in their daily lives. Especially for young people who are used to using earphones, if they can monitor their own indicators in real time through earphones and detect physical problems in advance, it will play a very important role in maintaining health.

[0005] There is a lack of products that use earphones to collect low-frequency heart sound signals on the market, and the reason is that the heart sound signal is in the ultra-low frequency range below 20Hz, and the existing earphone noise reduction microphone has poor collection performance for this frequency band; and there is too much noise in the ear canal, making it difficult to collect. SUMMARY

[0006] The main purpose of the present application is to provide an earphone that can better collect low-frequency heart sound signals.

[0007] To achieve the above purpose, the present application provides an earphone, wherein the earphone comprises:

[0008] A shell is provided with an ear-in end, and the ear-in end is provided with an opening;

[0009] A mounting bracket is mounted in the shell and covers the opening, and the mounting bracket is provided with a sound emitting hole and a sound collecting hole corresponding to the opening;

[0010] A loudspeaker is mounted on one side of the mounting bracket facing the shell, and is provided corresponding to the sound emitting hole; and

[0011] A microphone is mounted on one side of the mounting bracket facing the shell, and a sound collecting port on the microphone is in communication with the sound collecting hole on the mounting bracket to receive low-frequency heart sounds transmitted through the opening.

[0012] In an embodiment, the microphone is attached to the mounting bracket such that the sound receiving opening of the microphone is in communication with the sound receiving hole.

[0013] In an embodiment, the microphone is attached to the mounting bracket by adhesive.

[0014] In an embodiment, the mounting bracket comprises a bottom plate covering the opening and a side wall extending from the edge of the bottom plate towards the inner portion of the housing, the side wall being annularly arranged along the edge of the bottom plate, the sound emitting hole and the sound receiving hole being formed in the bottom plate.

[0015] In an embodiment, the bottom plate is mounted to the housing by an elastic seal.

[0016] In an embodiment, the elastic seal comprises a foam adhesive.

[0017] In an embodiment, a gap is provided between the side wall and the housing.

[0018] In an embodiment, the side wall supports the loudspeaker, and a gap between the loudspeaker and the side wall is sealed by a sealing structure, such that the loudspeaker and the bottom plate and the side wall form a cavity, the sound emitting hole being in communication with the cavity and the opening.

[0019] In an embodiment, the microphone is mounted in the cavity.

[0020] In an embodiment, an air pressure detecting device is further provided in the cavity.

[0021] In an embodiment, the detecting structure of the air pressure detecting device comprises a diaphragm in the microphone.

[0022] In an embodiment, the earphone further comprises a flexible circuit board, the microphone and the loudspeaker being electrically connected to the flexible circuit board, respectively.

[0023] In an embodiment, the frequency of the sound signal received by the microphone is A, and A < 20 Hz.

[0024] The earphone comprises the shell and the loudspeaker and the microphone installed in the shell, the microphone is arranged to receive low-frequency heart sound, and the loudspeaker and the microphone are installed in the shell through the mounting bracket, compared with directly installing the loudspeaker and the microphone in the shell, the mounting bracket plays a certain isolation role to isolate the vibration caused by the noise received by the shell, thereby reducing the influence of the noise on the microphone receiving low-frequency heart sound. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0026] Fig. 1 is a partial cross-sectional view of an embodiment of the earphone provided by the present application;

[0027] Fig. 2 is a perspective cross-sectional view of Fig. 1.

[0028] Explanation of reference numerals: 100, earphone; 1, shell; 11, opening; 2, mounting bracket; 21, sound emitting hole; 22, sound receiving hole; 23, bottom plate; 24, side wall; 25, elastic sealing element; 26, sealing structure; 27, cavity; 3, loudspeaker; 4, microphone; 5, air pressure detection device; 6, flexible circuit board.

[0029] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the scope of protection of the present application.

[0031] It should be noted that if the embodiment of the present application involves directionality indication (such as up, down, left, right, front, back, etc.), the directionality indication is only used to explain the relative position relationship, motion condition, etc. between components in a certain posture, and if the certain posture changes, the directionality indication also changes accordingly.

[0032] In addition, if the embodiment of the present application involves "first", "second" and the like, the "first", "second" and the like are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes include "A and / or B", which includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection claimed by the present application.

[0033] Nowadays, the working people in the city have more and more life pressure, negative emotions are easy to cause various problems of the body, and light appetite, spirit, heavy depression and other diseases, so the demand for monitoring of health indicators is necessary.

[0034] Earphones, mobile phones, watches and other devices are high-frequency portable electronic products used by ordinary people in daily life, and are important means of body index monitoring. Especially for young people who are used to using earphones, if they can monitor their various indicators in real time through earphones, they can detect physical problems in advance, which will play an important role in maintaining health.

[0035] There is a lack of products using earphones to collect low-frequency heart sound signals on the market, and the reason is that the heart sound signal is in the ultra-low frequency range below 20Hz, and the noise reduction microphone of the existing earphone has poor collection performance for this frequency band; and there is too much noise in the ear canal, and the collection is difficult.

[0036] The present application provides an earphone, please refer to figure 1 to figure 2, for the embodiment of the earphone provided by the present application, the earphone will be described in detail below in combination with specific drawings.

[0037] Referring to FIG. 1 to FIG. 2, the earphone 100 comprises a shell 1, a mounting bracket 2, a speaker 3 and a microphone 4, the shell 1 is provided with an ear-in end, the ear-in end is provided with an opening 11; the mounting bracket 2 is mounted in the shell 1 and covers the opening 11, the mounting bracket 2 is provided with a sound emitting hole 21 and a sound collecting hole 22 corresponding to the opening 11; the speaker 3 is mounted on one side of the mounting bracket 2 facing the shell 1 and is provided corresponding to the sound emitting hole 21; the microphone 4 is mounted on one side of the mounting bracket 2 facing the shell 1, and a sound collecting port on the microphone 4 is communicated with the sound collecting hole 22 on the mounting bracket 2 to receive low-frequency heart sound transmitted through the opening 11.

[0038] In the technical scheme of the present application, the earphone 100 comprises the shell 1 and the speaker 3 and the microphone 4 mounted in the shell 1, on the one hand, the microphone 4 is arranged to receive low-frequency heart sound, on the other hand, the speaker 3 and the microphone 4 are mounted in the shell 1 through the mounting bracket 2, compared with directly mounting the speaker 3 and the microphone 4 in the shell 1, the mounting bracket 2 plays a certain isolation role to isolate the vibration caused by the noise received by the shell 1, thereby reducing the influence of noise on the microphone 4 receiving low-frequency heart sound. By optimizing the structure to improve the propagation path of sound waves, the microphone 4 capable of receiving low-frequency heart sound can better collect heart sound information in the ear canal through structural cooperation, meeting the use requirements. Specifically, to meet the pickup of low-frequency heart sound, the lowest sound frequency that can be picked up by the microphone 4 in the present application should be lower than 20Hz. It can be understood that the microphone 4 in the present application is mainly used to pick up low-frequency heart sound, and the microphone 4 can be replaced, for example, arranged as a sound pickup device, based on being able to achieve the same purpose, the actual demand is the main, which is not limited here.

[0039] Specifically, the microphone 4 is attached to the mounting bracket 2, so that the sound collecting port of the microphone 4 is communicated with the sound collecting hole 22. The communication mode of the sound collecting port on the microphone 4 and the sound collecting hole 22 on the mounting bracket 2 can be various, including but not limited to communication through an additional communication pipeline, but obviously on the one hand, the additional communication pipeline increases the possibility of the microphone 4 picking up noise, on the other hand, it also increases the cost, and the practicability is poor, therefore, in the present embodiment, the microphone 4 is directly attached to the mounting bracket 2, so that the sound collecting port of the microphone 4 is directly communicated with the sound collecting hole 22, so that the sound collecting port is directly communicated with the opening 11 on the shell 1 without setting an additional communication structure, which can better collect heart sound information and reduce the noise interference caused by the structure of the earphone 100.

[0040] Further, the microphone 4 is attached to the mounting bracket 2 by adhesive. Based on the structure that the microphone 4 is attached to the mounting bracket 2 so that the sound collecting hole directly interfaces with the sound collecting hole 22, the microphone 4 can be attached to the mounting bracket 2 in various ways, such as being fastened to the mounting bracket 2 by a screw structure, being directly welded to the mounting bracket 2 by welding, etc., as long as the above-mentioned attachment feature can be achieved, which is not limited herein. In this embodiment, the microphone 4 is attached to the mounting bracket 2 by double-sided tape, which is convenient to assemble and disassemble, low in cost, and good in effect. On the other hand, the adhesive used can also play a certain sealing role to seal the gap between the sound collecting hole and the sound collecting hole 22, thereby protecting the sound collecting performance. On the other hand, the adhesive used can also play a certain buffering protection function, so as to further buffer and avoid the vibration of the mounting bracket 2 affecting the pickup of the heart sound by the microphone 4.

[0041] In addition, the mounting bracket 2 includes a bottom plate 23 covering the opening 11 and a side wall 24 extending from the edge of the bottom plate 23 towards the inside of the shell 1, and the side wall 24 is annularly arranged along the edge of the bottom plate 23. The sound emitting hole 21 and the sound collecting hole 22 are arranged on the bottom plate 23. The mounting bracket 2 mainly includes the bottom plate 23 at the opening 11, and in this embodiment, the side wall 24 extending from the edge of the bottom plate 23 towards the inside of the shell 1 is further arranged along the edge of the bottom plate 23. On the one hand, this increases the mountable operation area of the mounting bracket 2, which is convenient for the installation of various structures in the shell 1 or the arrangement of the installation position of the structure in the shell 1, thereby improving the structural design freedom. On the other hand, this increases the noise isolation area, thereby improving the isolation of the mounting bracket 2 to the noise vibration from the shell 1, and meeting the functional requirements.

[0042] In addition, the bottom plate 23 is mounted to the shell 1 by an elastic sealing element 25. On the one hand, when the bottom plate 23 is mounted to the shell 1, a sealing element is needed to seal the connection between the bottom plate 23 and the shell 1, so as to protect the sealing performance of the earphone 100 and prolong the service life of the earphone 100. On the other hand, the above-mentioned sealing element is an elastic sealing element 25, so that the bottom plate 23 and the shell 1 sealed and connected by the elastic sealing element 25 also have a certain vibration buffering effect, thereby further improving the performance of the mounting bracket 2 in isolating noise vibration and meeting the functional requirements. Specifically, in this embodiment, the elastic sealing element 25 is a foam adhesive, which is simple in structure, low in cost, good in effect, and more practical.

[0043] In addition, a gap is arranged between the side wall 24 and the shell 1. The gap is designed to allow the noise signal from the outside to pass through the shell 1 of the earphone 100 when propagating by vibration, and then the vibration is isolated by the side wall 24. On the basis of the gap arranged between the side wall 24 and the shell 1, the contact propagation between the side wall 24 and the shell 1 is avoided, which can maximize the isolation of the microphone 4 from the vibration on the shell 1, which is equivalent to shielding the microphone 4 from the first interference signal, and meets the reception of the low-frequency heart sound signal by the microphone 4.

[0044] In addition, the side wall 24 supports and fixes the loudspeaker 3, and the gap between the loudspeaker 3 and the side wall 24 is sealed by the sealing structure 26, so that the loudspeaker 3 and the bottom plate 23 and the side wall 24 form a cavity 27, and the sound hole 21 communicates the cavity 27 with the opening 11. On the basis that the loudspeaker 3 is fixed to the mounting bracket 2, the sealing structure 26 is arranged at the gap between the loudspeaker 3 and the side wall 24, which on the one hand stabilizes and seals the loudspeaker 3, and on the other hand forms the cavity 27, and improves the sound performance of the loudspeaker 3. Specifically, the sealing structure 26 is arranged as sealing silica gel.

[0045] In addition, the microphone 4 is installed in the cavity 27. The installation positions of the microphone 4 and the loudspeaker 3 on the mounting bracket 2 can not be limited, that is, they can be arranged at a distance from each other, and their own functions can be realized. In the embodiment, the microphone 4 is arranged in the cavity 27, which on the one hand reduces the space occupied by the loudspeaker 3 and the microphone 4, and on the other hand further shields noise by using the cavity 27, and meets the high-precision sound pickup requirement of the microphone 4.

[0046] In addition, an air pressure detection device 5 is also provided inside the cavity 27. It is understood that if the earphone 100 is not the right size or is worn incorrectly, it will cause air leakage in the ear canal. This leakage affects sound quality, leading to poorer noise reduction and a worse user experience; it also affects the acquisition of infrasound waves, reducing the accuracy of heart sound signal monitoring. Therefore, after the earphone 100 is worn, it automatically triggers a fit detection. At this time, the speaker 3 continuously plays a preset audio, and its diaphragm vibrates the air to produce sound. Since the ear canal is a sealed structure when the earphone 100 is worn normally, the internal air pressure changes with the audio output of the speaker 3. The air pressure detection device 5, located in the cavity 27, detects these changes in air pressure and determines whether the earphone 100 is worn correctly. This allows the user to be alerted to adjust the earphone if it is worn incorrectly, thus ensuring a better user experience.

[0047] Specifically, the detection structure of the air pressure detection device 5 includes a diaphragm inside the microphone 4. It is understood that the air pressure detection device 5 can be a structure independent of the speaker 3 and the microphone 4, but the microphone 4 contains the diaphragm structure, whose function is similar to that of the air pressure detection device 5. Therefore, in this embodiment, the diaphragm inside the microphone 4 is used as the air pressure detection device 5 to reduce structural costs.

[0048] In addition, the earphone 100 also includes a flexible circuit board 6, and the microphone 4 and the speaker 3 are electrically connected to the flexible circuit board 6 respectively. To facilitate the control of the speaker 3 and the microphone 4 by the earphone 100, the flexible circuit board 6 is also provided inside the earphone 100 for electrical connection with the microphone 4 and the speaker 3. Specifically, the flexible circuit board 6 is easy to adjust in shape and layout, and has practicality.

[0049] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An earphone, characterized by comprising: The earphone comprises: a housing provided with an ear-inlet end, the ear-inlet end being provided with an opening; a mounting bracket mounted in the housing and covering the opening, the mounting bracket being provided with a sound emitting hole and a sound receiving hole corresponding to the opening; a speaker mounted on a side of the mounting bracket facing the inside of the housing and corresponding to the sound emitting hole; and a microphone mounted on a side of the mounting bracket facing the inside of the housing, the sound receiving port on the microphone being in communication with the sound receiving hole on the mounting bracket to receive low frequency heart sounds transmitted through the opening.

2. The earphone of claim 1, wherein The microphone is attached to the mounting bracket so that the sound receiving port on the microphone is in corresponding communication with the sound receiving hole.

3. The earphone of claim 2, wherein The microphone is attached to the mounting bracket by adhesive.

4. The earphone of claim 1, wherein The mounting bracket comprises a bottom plate covering the opening and a side wall extending from the edge of the bottom plate towards the inside of the housing, the side wall being annularly arranged along the edge of the bottom plate, the sound emitting hole and the sound receiving hole being arranged on the bottom plate.

5. The earphone of claim 4, wherein The bottom plate is mounted on the housing by an elastic sealing member.

6. The earphone of claim 5, wherein The elastic sealing member comprises foam adhesive.

7. The earphone of claim 4, wherein A gap is provided between the side wall and the housing.

8. The earphone of claim 4, wherein The side wall supports and fixes the speaker, and the gap between the speaker and the side wall is sealed by a sealing structure, so that the speaker and the bottom plate and the side wall form a cavity, the sound emitting hole communicating the cavity with the opening.

9. The earphone of claim 8, wherein The microphone is mounted in the cavity.

10. The earphone of claim 8, wherein The cavity is further provided with a gas pressure detection device.

11. The earphone of claim 10, wherein The detection structure of the gas pressure detection device comprises a diaphragm in the microphone.

12. The earphone of any one of claims 1 to 11, wherein, The earphone further comprises a flexible circuit board, the microphone and the speaker being electrically connected to the flexible circuit board respectively.

13. The earphone of any one of claims 1 to 11, wherein, The frequency of the sound signal received by the microphone is A, and A<20 Hz.

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