Airtight structure for improving earphone receiving tone quality and bone conduction earphone with airtight structure

Abstract

The utility model belongs to the technical field of earphones, and particularly discloses an airtight structure for improving the sound receiving quality of an earphone and a bone conduction earphone. The airtight structure comprises a box body, a sealing member and a microphone, the inner wall of the box body is provided with a mounting groove, the mounting groove is covered with a fixing cover to form a cavity, the sealing member is located in the cavity, a sealing cavity is formed in the sealing member, and the microphone is contained in the sealing cavity and partially wrapped by the sealing member. An acoustic-electric conversion element of the microphone is exposed out of the box body through an opening in the sealing piece, and a pickup hole is formed in the opening and located in the mounting groove. The airtight structure not only can reduce the influence of the vibration of the vibrator on the sound receiving sensitivity and efficiency of the microphone, but also can isolate the additionally introduced noise and improve the sound receiving quality. The bone conduction earphone comprises a control box, and the control box comprises the airtight structure for improving the sound receiving quality of the earphone. The bone conduction earphone can reduce the influence of vibration interference in the earphone on the sound receiving sensitivity and efficiency of the earphone, and improves the sound receiving quality of the earphone.

Description

TECHNICAL FIELD

[0001] The utility model belongs to earphone technical field, especially relate to a bone conduction earphone of air -tight structure of improving earphone receiving voice quality and have the air -tight structure. BACKGROUND

[0002] In the existing earphone design, the microphone (microphone) as the key component of sound pickup, its performance directly affects the earphone receiving voice quality. However, in the actual use process, the microphone often will be subjected to the vibration interference from other components in the earphone, such as the vibrator, leading to the decline of the sound efficiency, and the damage of the sound quality.

[0003] In the existing earphone, the microphone is usually directly installed in the box body of the earphone, and there is lack of effective vibration isolation and sealing measures. When the vibrator vibrates, the vibration will be transmitted to the microphone through the solid structure of the earphone box, causing unnecessary mechanical vibration of the internal acoustic-electric conversion element of the microphone, and further interfering with the normal sound signal pickup. This interference not only reduces the sound sensitivity and efficiency of the microphone, but also may introduce additional noise, seriously affecting the receiving voice quality of the earphone.

[0004] Especially for bone conduction earphone, the vibrator is usually installed on the earphone head, responsible for the conduction of sound; and the microphone is installed in the control box, responsible for picking up external sound signals and converting them into electrical signals. Although the vibrator and the microphone are relatively separated in physical position, the vibration generated by the vibrator during work will be transmitted to the control box through the overall structure of the earphone, such as the connecting parts (ear hook, rear hook), shell, etc., in the form of solid sound transmission, and further interfere with the normal work of the microphone. This vibration interference will reduce the sound sensitivity of the microphone, introduce additional noise, and seriously affect the receiving voice quality of the earphone, especially in the scene of clear communication or accurate voice recognition, the problem is more prominent.

[0005] Therefore, the inventor designs an air-tight structure and a bone conduction earphone to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at: provide a kind of air-tight structure of improving earphone receiving voice quality, not only can reduce the influence of vibrator vibration on the sound sensitivity and efficiency of microphone, but also can isolate additional noise, improve receiving voice quality.

[0007] Another purpose of the utility model is to provide a kind of bone conduction earphone, which can reduce the influence of vibration interference in the earphone on the sound sensitivity and efficiency of the earphone, and improve the receiving voice quality of the earphone.

[0008] In order to achieve the above purpose, a technical scheme adopted by the utility model is as follows:

[0009] The utility model provides an airtight structure of improving earphone receiving voice quality, including box body, sealing element and microphone, the inner wall of box body is equipped with installation groove, the installation groove is covered with fixed lid and forms a cavity, the sealing element is located in the cavity, the sealing element is equipped with sealing cavity, the microphone is accommodated in the sealing cavity and is partially covered by the sealing element, the sound -electricity conversion element of microphone is exposed outside the box body through the opening on the sealing element and forms the sound hole at the opening, and the sound hole is located in the installation groove.

[0010] As an improvement of the airtight structure of improving earphone receiving voice quality of the utility model, a plurality of fixed columns are arranged around the outer wall of the installation groove, and the inside of the box body is fixedly connected with the fixed cover through the fixed columns.

[0011] As an improvement of the airtight structure of improving earphone receiving voice quality of the utility model, EVA cotton is accommodated in the sealing cavity, and the microphone is arranged on the EVA cotton with the sound -electricity conversion element exposed to the EVA cotton.

[0012] As an improvement of the airtight structure of improving earphone receiving voice quality of the utility model, the microphone is arranged on a FPC board, the sealing element includes a pair of silica gel sleeves, and a pair of the silica gel sleeves are sealed to form the sealing cavity, and the microphone connecting end of the FPC board is clamped between a pair of the silica gel sleeves.

[0013] As an improvement of the airtight structure of improving earphone receiving voice quality of the utility model, the number of the sealing element and the microphone is two, two microphones are accommodated in the sealing cavity of two sealing elements respectively, one of the microphones is a noise reduction microphone, and the other microphone is a receiving microphone, and the noise reduction microphone and the receiving microphone are arranged on the same FPC board.

[0014] In order to achieve the above-mentioned another purpose, a technical scheme of the utility model is adopted as follows:

[0015] A bone conduction earphone comprises a control box, and the control box comprises the airtight structure of improving earphone receiving voice quality.

[0016] As an improvement of the bone conduction earphone of the utility model, the control box further comprises a control circuit board, and the control circuit board is electrically connected with the microphone.

[0017] As an improvement of the bone conduction earphone of the utility model, the bone conduction earphone further comprises a battery box and two earphone heads, the control box is connected with the battery box through a rear hanging, and the control box and the battery box are connected with the two earphone heads through ear hangings respectively.

[0018] As an improvement of the utility model bone conduction earphone, the earphone head includes the machine body, the vibration output end of machine body is equipped with the soft rubber vibrating diaphragm, the machine body is equipped with the oscillator, the oscillator vibration piece is towards the vibration hole side of machine body arrangement, the vibration piece is fixed with the hard rubber piece, the soft rubber vibrating diaphragm fixed sleeve is set on the hard rubber piece.

[0019] As an improvement of the utility model bone conduction earphone, the soft rubber vibrating diaphragm's inner and outer surfaces are provided with concave-convex structure and form a wave-shaped suspension edge in cross-section, the suspension edge is located in the vibration hole and is arranged around the hard rubber piece in a circle.

[0020] Compared with the prior art, the utility model improves the air-tight structure of the earphone receiving sound quality, the inner wall of the box body is provided with a mounting groove, the mounting groove is covered with a fixed cover and forms a cavity, the sealing element is located in the cavity and is provided with a sealing cavity to accommodate the microphone, the microphone is partially covered by the sealing element, the acoustic-electric conversion element is exposed outside the box body through the opening in the sealing element, and a pickup hole is formed at the opening, which is located in the mounting groove and communicates with the external environment while achieving effective sealing and vibration isolation. The entire air-tight structure not only reduces the influence of oscillator vibration on the receiving sensitivity and efficiency of the microphone, but also isolates additional noise, improves the receiving sound quality, and prolongs the service life of the microphone.

[0021] Compared with the prior art, the utility model bone conduction earphone improves the air-tight structure of the earphone receiving sound quality, which is arranged on the control box of the bone conduction earphone, reduces the influence of vibration interference in the earphone on the receiving sensitivity and efficiency of the earphone, and improves the receiving sound quality of the earphone. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the perspective view of the bone conduction earphone of the utility model;

[0023] Figure 2 is the perspective view of the bone conduction earphone of the utility model, and the control box is in an exploded state;

[0024] Figure 3 is the perspective view of the box shell and each part fixed thereon of the utility model;

[0025] Figure 4 is the perspective view of the box shell and each part fixed thereon of the utility model;

[0026] Figure 5 is the sectional view of the control box of the utility model;

[0027] Figure 6 is Figure 5 is the enlarged view of A in

[0028] Figure 7is the stereogram of the single earphone head in the bone conduction earphone of the utility model;

[0029] Figure 8 is the sectional view of the single earphone head in the bone conduction earphone of the utility model;

[0030] Figure 9 is Figure 8 is the enlarged view of B in the middle;

[0031] Figure 10 is the stereogram of the single earphone head in the bone conduction earphone of the utility model;

[0032] Figure 11 is the stereogram of the single earphone head in the bone conduction earphone of the utility model;

[0033] Figure 12 is the stereogram of the soft gel vibrating diaphragm and the hard gel piece of the utility model;

[0034] Figure 13 is the sectional view of the soft gel vibrating diaphragm and the hard gel piece of the utility model;

[0035] Figure 14 is the stereogram of the single earphone head in the bone conduction earphone of the utility model, and the battery box is in the exploded state.

[0036] Illustration:

[0037] 1, earphone head;11, machine body;12, fixed shell;13, shell;131, vibration hole;14, soft gel vibrating diaphragm;141, suspension edge;142, fixed hole;15, vibrator;151, vibrating piece;152, hard gel piece;1521, fixed platform;2, control box;21, box shell;211, sound pickup hole;212, fixed column;213, noise reduction pickup hole;214, mounting groove;22, cover;221, box body;23, control circuit board;24, sound microphone;241, noise reduction microphone;242, FPC board;25, inner silica gel sleeve;251, containing groove;26, outer silica gel sleeve;261, sealing element;27, EVA cotton;28, fixed cover;3, battery box;31, box body;32, battery;33, box cover;4, ear hook;5, rear hook. Specific implementation

[0038] The embodiment of the utility model will be specifically explained below in combination with the drawings, and the drawings are only for reference and illustration, and do not constitute the limitation of the patent protection range of the utility model.

[0039] Refer to Figures 1 to 6The utility model provides an air -tight structure of promoting earphone receiving voice quality, including box 221, sealing piece 261 and microphone, the inner wall of box 221 is equipped with installation groove 214, the installation groove 214 is covered with fixed cover 28 and forms a cavity, sealing piece 261 is located in the cavity, the sealing cavity is equipped in sealing piece 261, and the microphone is accommodated in the sealing cavity and is partially covered by sealing piece 261, and the sound -electricity conversion element of microphone is exposed outside box 221 through the opening on sealing piece 261 and forms a pickup hole at the opening, and the pickup hole is located in installation groove 214.

[0040] Referring to Figure 3 、 Figure 4 and Figure 5 , the number of sealing piece 261 and microphone is preferably two, two microphones are respectively accommodated in the sealing cavity of two sealing pieces 261, and the sound -electricity conversion element of each microphone is exposed outside box 221 through the opening on the corresponding sealing piece 261 and forms a pickup hole at the opening.

[0041] Referring to Figure 2 and Figure 5 , the box 221 includes a box shell 21 and a cover 22, the inner wall of box shell 21 is equipped with two installation grooves 214, and the two pickup holes are specifically a sound pickup hole 211 and a noise reduction pickup hole 213, a plurality of fixed columns 212 are arranged around the outer wall of each installation groove 214, and the cover 22 is covered on the box shell 21 to form a control cavity.

[0042] Referring to Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 , the opening of each installation groove 214 is covered with a fixed cover 28 and forms a cavity, and the two fixed covers 28 are fixedly connected with the box shell 21 through the corresponding fixed columns 212, so that the fixed cover 28 is fixed on the side wall of the corresponding installation groove 214, and the two sealing pieces 261 are located in the two cavities respectively, each sealing piece 261 includes a pair of silica gel sleeves, and the pair of silica gel sleeves seal together to form a sealing cavity, and the pair of silica gel sleeves are specifically an outer silica gel sleeve 26 and an inner silica gel sleeve 25, a receiving groove 251 is arranged on the sealing surface of the outer silica gel sleeve 26 and the sealing surface of the inner silica gel sleeve 25, the inner silica gel sleeve 25 is located in the corresponding installation groove 214, the outer silica gel sleeve 26 is located in the corresponding fixed cover 28, the outer silica gel sleeve 26 is stacked and covered on the corresponding inner silica gel sleeve 25 to form the sealing cavity, and an EVA cotton 27 is accommodated in each sealing cavity.

[0043] Referring to Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6, two microphones are specifically a noise reduction microphone 241 and a sound microphone 24, the sound microphone 24 is accommodated in the sealed cavity close to the earphone head 1 and is stacked on the corresponding EVA cotton 27, the sound microphone 24 is mainly used to pick up sound signals and convert them into electrical signals for subsequent processing or transmission, the sound microphone 24 is exposed to the EVA cotton 27, the inner silica gel sleeve 25 close to the earphone head 1 and opposite to the position of the sound pickup hole 211, the noise reduction microphone 241 is mainly used to pick up clear sound signals in a noisy environment while effectively suppressing or eliminating background noise, the noise reduction microphone 241 is accommodated in the sealed cavity away from the earphone head 1 and is stacked on the corresponding EVA cotton 27, the sound pickup hole 213 of the noise reduction microphone 241 is exposed to the EVA cotton 27, the inner silica gel sleeve 25 away from the earphone head 1 and opposite to the position of the noise reduction microphone 241, the noise reduction microphone 241 and the sound microphone 24 are arranged on the same FPC board 242, the two microphone connecting ends of the FPC board 242 are clamped between a pair of silica gel sleeves, the noise reduction microphone 241 and the part of the FPC board 242 opposite to the noise reduction microphone 241 are located in the sealed cavity away from the earphone head 1, and the sound microphone 24 and the part of the FPC board 242 opposite to the sound microphone 24 are located in the sealed cavity close to the earphone head 1, so that the periphery of the two microphones is sealed, and the influence of the vibration of the vibrator 15 on the sound pickup efficiency of the microphone is reduced.

[0044] The utility model discloses a sound quality of earphone receiving's air -tight structure improves, through the inner wall of box body 221 is equipped with the mounting groove 214, the mounting groove 214 is covered with fixed lid 28 and forms a cavity, and the sealing element 261 is located in the cavity, and is equipped with the sealed cavity to accommodate the microphone, and the microphone is partially covered by the sealing element 261, and the sound -electricity conversion element thereof is exposed outside the box body 221 through the opening in the sealing element 261 and forms a sound pickup hole at the opening, which is located in the mounting groove 214 and communicates with the external environment while achieving effective sealing and vibration isolation. The entire air -tight structure not only reduces the influence of the vibration of the vibrator 15 on the sound pickup sensitivity and efficiency of the microphone, but also isolates additional noise, improves the sound quality of the receiving, and prolongs the service life of the microphone.

[0045] Refer to Figures 1 to 14 A bone conduction earphone comprises a control box 2, a battery box 3 and two earphone heads 1, the control box 2 is connected with the battery box 3 through a half-arc-shaped rear hanging 5, the control box 2 and the battery box 3 are connected with the two earphone heads 1 through arc-shaped ear hangings 4 respectively, when a user wears the earphone, the rear hanging 5 is located behind the neck, the two ear hangings 4 are hung on the ears respectively, the control box 2 and the battery box 3 are located behind the two ears respectively, and the two earphone heads 1 are located in front of the ears.

[0046] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5And Figure 6 The control box 2 includes the air-tight structure for improving the sound quality of the receiver and a control circuit board 23, and the two microphones are both electrically connected with the control circuit board 23. The control circuit board 23 is located in the box body 221, the two ends of the box shell 21 are connected with the rear hanging 5 and the corresponding ear hanging 4 respectively, and the side of the box shell 21 close to the battery box 3 is hollowed out. One of the installation grooves 214 is close to the two earphone heads 1, and the other installation groove 214 is away from the two earphone heads 1. The sound receiving hole 211 is located in the installation groove 214 close to the earphone head 1, the noise reduction pickup hole 213 is located in the installation groove 214 away from the earphone head 1, the control circuit board 23 is located in the control cavity, and the FPC board 242 is electrically connected with the control circuit board 23.

[0047] Referring to Figure 14 The battery box 3 includes a box body 31, a box cover 33 and a battery 32. The two ends of the box body 31 are connected with the rear hanging 5 and the corresponding ear hanging 4 respectively, the box cover 33 is arranged on the box body 31 to form a battery compartment, and the battery 32 is accommodated in the battery compartment. The battery 32 and the two vibration units 15 are both electrically connected with the control circuit board 23, and the two microphones are electrically connected with the control circuit board 23 through the same FPC board 242.

[0048] Referring to Figures 7 to 13 The earphone head 1 includes a body 11, a soft rubber vibrating diaphragm 14 and a vibration unit 15. The soft rubber vibrating diaphragm 14 is arranged on the vibration output end of the body 11, the vibration unit 15 is arranged in the body 11, the vibrating plate 151 of the vibration unit 15 is arranged towards the side of the vibration hole 131 of the body 11, a hard rubber plate 152 is fixed on the vibrating plate 151, the soft rubber vibrating diaphragm 14 is fixedly sleeved on the hard rubber plate 152, and the inner and outer surfaces of the soft rubber vibrating diaphragm 14 are provided with concave-convex structures to form a suspension edge 141 in a wave shape in cross section. The suspension edge 141 is located in the vibration hole 131 and is arranged around the hard rubber plate 152.

[0049] Referring to Figure 7 , Figure 8 , Figure 10 And Figure 11 The body 11 includes a fixed shell 12 and a shell 13. The fixed shell 12 is in a shell shape and has an opening on one side, and the shell 13 is arranged on the opening on the side of the fixed shell 12. The vibration hole 131 is located on the end face of the shell 13, so that the entire shell 13 forms a ring shape. The fixed shell 12 and the shell 13 are both made of hard material.

[0050] Referring to Figures 7 to 13The soft gel vibrating diaphragm 14 is made of silica gel, and the edge of the soft gel vibrating diaphragm 14 is fixedly connected with the fixed shell 12 and covers the shell 13. A circular fixing hole 142 is arranged on the end surface of the soft gel vibrating diaphragm 14, a hard gel piece 152 is circular and is fixedly installed in the fixing hole 142, the hard gel piece 152 is coaxially arranged with the vibrating piece 151, a circular column-shaped fixing table 1521 is arranged on the side center of the hard gel piece 152, the vibrating piece 151 is sleeved on the fixing table 1521, and a suspension edge 141 is also arranged on the end surface of the soft gel vibrating diaphragm 14. The suspension edge 141 is in a wave shape in section and is arranged around the hard gel piece 152 in a circle. The wave-shaped structure of the suspension edge 141 can not only significantly reduce energy loss in the vibration process, make the sound clearer and fuller, but also make the vibration energy more evenly distributed on the soft gel vibrating diaphragm 14, so that the local vibration is not too strong or too weak, and the uniform vibration distribution helps to improve the sound quality performance of the bone conduction earphone, so that the user can enjoy more natural and smooth music experience. In addition, the reduced harmonic distortion can also make the sound purer. The soft gel vibrating diaphragm 14 is made of soft and elastic silica gel material, so that the compression of the earphone on the head and ear can be reduced, and the wearing is more comfortable. In addition, the reasonable suspension edge design can also make the earphone better fit the head contour and improve the stability of wearing.

[0051] With reference to Figures 7 to 14 The working principle of the earphone head 1 is as follows:

[0052] When the audio electric signal is input to the vibrator 15, the vibrator 15 generates a magnetic field force of a corresponding frequency and amplitude according to the change of the electric signal, drives the vibrating piece 151 of the vibrator 15 to reciprocate, and amplifies the mechanical vibration.

[0053] The vibration of the vibrating piece 151 of the vibrator 15 is directly transmitted to the soft gel vibrating diaphragm 14 connected thereto through the hard gel piece 152. Since the hard gel piece 152 has high rigidity and good vibration transmission performance, the vibration generated by the vibrator 15 can be efficiently and accurately transmitted to the soft gel vibrating diaphragm 14, and the attenuation of the vibration in the transmission process is reduced.

[0054] After receiving the vibration transmitted by the hard gel piece 152, the soft gel vibrating diaphragm 14 starts to vibrate. The soft gel material has good flexibility and elasticity, and can produce large deformation in the vibration process, so as to effectively convert the vibration into sound waves.

[0055] The wavy suspension edge 141 can act like a spring to cushion and support when vibrating, reducing direct friction and collision between the soft rubber vibrating diaphragm 14 and the body 11. When the soft rubber vibrating diaphragm 14 vibrates, the wavy structure of the suspension edge 141 will elastically deform, absorbing and dispersing the impact force generated by vibration, avoiding energy loss in the form of heat energy, thereby improving vibration transmission efficiency and enabling more vibration energy to be used to push air to generate sound waves.

[0056] Meanwhile, the wavy structure of the suspension edge 141 can also guide the distribution of vibration on the soft rubber vibrating diaphragm 14. Since the suspension edge 141 is arranged around the hard rubber sheet 152, it can make the vibration energy more evenly distributed on the soft rubber vibrating diaphragm 14, avoiding the situation of local over-vibration or under-vibration. Uniform vibration distribution helps to produce clearer and fuller sound, reduces harmonic distortion, and improves sound quality performance.

[0057] The sound waves generated by the coordinated vibration of the soft rubber vibrating diaphragm 14 and the suspension edge 141 propagate outward. In a bone conduction earphone, these sound waves act on the user's skull, using the principle of bone conduction to directly transmit sound waves to the inner ear, bypassing the outer and middle ears, enabling the user to perceive sound. Due to the improved vibration transmission efficiency and uniformity of vibration distribution of the suspension structure, the bone conduction earphone can emit sound waves with higher transmission efficiency and better sound quality, providing users with a better auditory experience.

[0058] The earphone head 1 of the present utility model aims to achieve the following technical effects:

[0059] Improve vibration transmission efficiency: through the special design of the wavy suspension edge 141, reduce energy loss during vibration, enable more vibration energy to be effectively transmitted to the user's skull, and improve sound transmission efficiency.

[0060] Optimize sound quality performance: uniform vibration energy distribution and reduced energy loss help to improve the sound quality performance of the bone conduction earphone, enabling users to enjoy a clearer and fuller audio experience.

[0061] Improve wearing comfort: the design of soft rubber material and wavy suspension edge 141 makes the vibration more uniform and soft, reducing the discomfort caused by local vibration to the user, and improving the wearing comfort.

[0062] The working principle of the bone conduction earphone sound playing process of the present utility model is:

[0063] 1. Audio signal input: the control box 2 receives the audio signal of the external device (such as a mobile phone), processes it through the control circuit board 23, and then transmits the electrical signal to the vibrator 15 in the earphone head 1;

[0064] 2. Vibration driving of the vibrator 15: When the electric signal drives the vibrator 15 to vibrate, the vibration piece 151 on the vibrator 15 drives the hard rubber piece 152 to vibrate at high frequency, and then pushes the soft rubber vibration diaphragm 14 to vibrate synchronously.

[0065] 3. Bone conduction sound wave transmission: The soft rubber vibration diaphragm 14 is flexibly connected with the edge of the vibration hole 131 through the suspension edge 141 (wavy structure), so as to enhance the vibration stability. The soft rubber vibration diaphragm 14 transmits the mechanical vibration to the temporal bone (skull) of the user, and the sound wave is transmitted to the cochlea of the inner ear through the skull, so as to activate the auditory nerve.

[0066] The working principle of the bone conduction earphone in the receiving process is as follows:

[0067] 1. Sound signal receiving: The bone conduction earphone receives external sound signals through the built-in sound receiving microphone 24. The sound receiving microphone 24 is located in the control box 2 and communicates with the outside through the sound pickup hole 211. At the same time, the control box 2 is also provided with a noise reduction microphone 241, and the noise reduction microphone 241 communicates with the outside through the noise reduction pickup hole 213. The noise reduction microphone 241 is used to capture environmental noise for subsequent noise reduction processing.

[0068] 2. Sound signal conversion: The sound receiving microphone 24 converts the received sound signals into electric signals. These electric signals are then transmitted to the control circuit board 23 in the control box 2.

[0069] 3. Signal processing and amplification: The control circuit board 23 processes and amplifies the received electric signals to ensure that the quality and strength of the signals are sufficient to drive the vibrator 15 in the earphone head 1.

[0070] 4. Vibration generation and transmission: The processed electric signals are transmitted to the vibrator 15 in the earphone head 1. The vibrator 15 generates corresponding mechanical vibrations according to the frequency and amplitude of the electric signals. These vibrations are transmitted to the user's skull through the vibration piece 151, the hard rubber piece 152 and the soft rubber vibration diaphragm 14 of the vibrator 15. The design of the soft rubber vibration diaphragm 14 helps to enhance the transmission efficiency of the vibration and reduce the leakage phenomenon.

[0071] 5. Bone conduction and auditory perception: The skull acts as a medium for sound transmission, further transmitting vibrations to the inner ear. The auditory nerves in the inner ear convert these vibrations into electric signals and transmit them to the auditory center of the brain through the auditory nerves. The auditory center of the brain analyzes and processes the received electric signals, and finally makes people perceive the sound.

[0072] The above only discloses the preferred embodiment of the utility model, which cannot limit the protection scope of the utility model, so equivalent changes made in the patent application range of the utility model still belong to the range covered by the utility model.

Claims

1. An air-tight structure for improving the quality of a received voice of a headset, characterized by comprising: The microphone includes a box body, a sealing element and a microphone, an installation groove is arranged on the inner wall of the box body, a fixed cover is arranged on the installation groove and forms a cavity, the sealing element is arranged in the cavity, a sealing cavity is arranged in the sealing element, the microphone is arranged in the sealing cavity and is partially covered by the sealing element, the acoustic-electric conversion element of the microphone is exposed outside the box body through an opening of the sealing element and forms a sound pickup hole at the opening, and the sound pickup hole is arranged in the installation groove.

2. The air-tight structure for improving the sound quality of a receiver of a headset according to claim 1, wherein A plurality of fixed columns are arranged around the outer wall of the installation groove, and the inside of the box body is fixedly connected with the fixed cover through the fixed columns.

3. The air-tight structure for improving the sound quality of a receiver of a headset according to claim 1, wherein EVA cotton is arranged in the sealing cavity, the microphone is arranged on the EVA cotton, and the acoustic-electric conversion element of the microphone is exposed to the EVA cotton.

4. The air-tight structure for improving the sound quality of a receiver of a headset according to claim 1, wherein The microphone is arranged on an FPC board, the sealing element includes a pair of silica gel sleeves, the pair of silica gel sleeves seal and cover to form the sealing cavity, and the microphone connecting end of the FPC board is clamped between the pair of silica gel sleeves.

5. The air-tight structure for improving the sound quality of a receiver of a headset according to claim 4, wherein The number of the sealing elements and the number of the microphones are both two, the two microphones are respectively arranged in the sealing cavities of the two sealing elements, one of the microphones is a noise reduction microphone, and the other microphone is a sound collecting microphone, and the noise reduction microphone and the sound collecting microphone are arranged on the same FPC board.

6. A bone conduction earpiece comprising a control box, characterized in that The control box includes the air-tight structure for improving the sound quality of the earphone receiver according to any one of claims 1-5.

7. The bone conduction earpiece of claim 6, wherein, The control box further includes a control circuit board, and the control circuit board is electrically connected with the microphone.

8. The bone conduction earpiece of claim 6, wherein, The bone conduction earphone further includes a battery box and two earphone receivers, the control box is connected with the battery box through a rear hanging part, and the control box and the battery box are respectively connected with the two earphone receivers through ear hanging parts.

9. The bone conduction earpiece of claim 8, wherein, The earphone receiver includes a machine body, a soft rubber vibrating diaphragm is arranged on the vibration output end of the machine body, a vibrator is arranged in the machine body, the vibrating plate of the vibrator is arranged towards the side of the vibration hole of the machine body, a hard rubber plate is fixed on the vibrating plate, and the soft rubber vibrating diaphragm is fixedly sleeved on the hard rubber plate.

10. The bone conduction earphone according to claim 9, characterized in that, The inner and outer surfaces of the soft rubber vibrating diaphragm are provided with concave-convex structures to form a wave-shaped suspension edge in cross section, the suspension edge is arranged in the vibration hole and surrounds the hard rubber plate.

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