Acoustic output apparatus

Abstract

The present application relates to the technical field of electronic devices, and in particular to an acoustic output apparatus. A sound outlet (103), a first pressure relief hole (104) and a second pressure relief hole (105) are provided in a housing (10), wherein the sound outlet (103) is in communication with a first acoustic cavity (201); the first pressure relief hole (104) and the second pressure relief hole (105) are both in communication with a second acoustic cavity (202); the housing (10) is provided with a first direction, a second direction and a third direction, which are orthogonal to one another, the housing (10) comprises a first housing wall (1101) and a second housing wall (1102), which are spaced apart in the first direction, and the housing (10) further comprises a third housing wall (1103), the third housing wall (1103) being connected to the first housing wall (1101) and the second housing wall (1102); the first pressure relief hole (104) is provided on the third housing wall (1103); the second pressure relief hole (105) is provided on the second housing wall (1102); and when the acoustic output apparatus is in a worn state, the first housing wall (1101) faces the head of a user, the second housing wall (1102) is arranged on the side of the first housing wall (1101) facing away from the head of the user, and the third housing wall (1103) is located on the side of the housing (10) facing away from the top of the user's head in the third direction. According to the present application, in some scenarios, at least during exercise of the user, the problem of poor sound performance caused by the coverage of the first pressure relief hole (104) with the sweat of the user can be improved.

Description

An acoustic output device

[0001] This application claims priority to application number PCT / CN2023 / 136558 filed with the World Intellectual Property Organization (WIPO) (International Bureau) on December 5, 2023.

Technical field

[0002] The present application relates to the technical field of electronic devices, and in particular to an acoustic output device. [Background Technology]

[0003] Headphones can be worn by users to listen to sounds. Users can listen to sounds during exercise, such as running, or when not exercising. However, in some scenarios, users may find that the sound performance of headphones during exercise is worse than that during non-exercise.

[0004] [Summary of the invention]

[0005] The present application provides an acoustic output device, comprising a housing and an air conduction oscillator carried by the housing, the housing having a first acoustic cavity and a second acoustic cavity, the first acoustic cavity and the second acoustic cavity being respectively located on either side of a diaphragm of the air conduction oscillator, the housing being provided with a sound outlet hole, a first pressure relief hole, and a second pressure relief hole, the sound outlet hole being in communication with the first acoustic cavity, and the first pressure relief hole and the second pressure relief hole both being in communication with the second acoustic cavity;

[0006] The housing has a first direction, a second direction, and a third direction orthogonal to each other, the housing includes a first housing wall and a second housing wall spaced apart along the first direction, the housing further includes a third housing wall connecting the first housing wall and the second housing wall, the first pressure relief hole is provided on the third housing wall, and the second pressure relief hole is provided on the second housing wall;

[0007] In the wearing state, the first shell wall faces the user's head, the second shell wall is arranged on the side of the first shell wall away from the user's head, and the third shell wall is located on the side of the shell away from the top of the user's head along the third direction.

[0008] The present application provides a first pressure relief hole and a second pressure relief hole, so that when the first pressure relief hole is affected, the second pressure relief hole can assist in improving the sound performance of the acoustic output device. In some scenarios, the present application can at least improve the problem of poor sound performance caused by the first pressure relief hole being covered by the user's sweat during exercise.

Brief Description of the Drawings

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0010] FIG1 is a schematic structural diagram of an acoustic output device in some embodiments of the present application;

[0011] FIG2 is a schematic diagram of the front profile of a user's ear in some embodiments of the present application;

[0012] FIG3 is a schematic structural diagram of the core assembly in some embodiments of the embodiment shown in FIG1 ,

[0013] FIG4 is an exploded schematic diagram of the movement assembly in the embodiment shown in FIG3 ;

[0014] FIG5 is a schematic diagram of the second pressure relief hole in the embodiment shown in FIG3 ;

[0015] FIG6 is a schematic diagram of a partial structure of the housing in the embodiment shown in FIG4 ;

[0016] FIG7 is a schematic diagram of a portion of the structure of the screen assembly in the embodiment shown in FIG6 ,

[0017] FIG8 is a partial cross-sectional view of the screen assembly in the embodiment shown in FIG7;

[0018] FIG. 9 is a schematic structural diagram of the insert in the embodiment shown in FIG. 7 . [Specific implementation method]

[0019] The present application will be further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application and do not limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application and not all embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0020] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of this application. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0021] Please refer to Figure 1, which is a schematic diagram of the structure of the acoustic output device in some embodiments of the present application. The acoustic output device 100 can be used as a sound source to output sound such as air-conducted sound and bone-conducted sound. The acoustic output device 100 can be worn on the user's head and can be at least partially adjacent to the user's ear, so that the sound can be transmitted to the user's ear, achieving the effect of the user listening to the sound. In some embodiments, the acoustic output device 100 can be called a "headphone". In some embodiments, the acoustic output device 100 can also integrate other functions such as sound pickup and image display, which are not described in detail. In some embodiments, the acoustic output device 100 can push an air load to produce air-conducted sound, and can also push a physical load (such as the acoustic output device 100, user tissue, bones, etc.) to produce bone-conducted sound.

[0022] The acoustic output device 100 may include a wearing member 1001 and a core assembly 1002 connected to the wearing member 1001. The wearing member 1001 cooperates with the core assembly 1002 to enable the core assembly 1002 to be worn on the user's head.

[0023] The wearing piece 1001 can be arranged around the user's head, or hung on the user's head to be worn on the user's head, and of course it can also be hung on the user's ear at the same time. Furthermore, the wearing piece 1001 can also be hung only on the user's ear, and then the wearing piece 1001 can also be called an "ear hook". The main function of the wearing piece 1001 is to cooperate with the movement component 1002, and then this application does not limit the specific form of the wearing piece 1001. As long as it can cooperate with the movement component 1002 to realize the wearing of the movement component 1002 on the user's head, it can be used.

[0024] Core assembly 1002 serves as the structure that implements the primary functions of acoustic output device 100. For example, core assembly 1002 can push an air load to produce air-conducted sound. For example, core assembly 1002 can push a physical load (e.g., core assembly 1002, user tissue, or bones) to produce bone-conducted sound. Core assembly 1002 can also perform other functions, such as sound pickup and image display, which are not detailed here.

[0025] In some embodiments, the movement assembly 1002 may not contact the user when pushing an air load to generate air-conducted sound, but it may also contact the user. In some embodiments, the movement assembly 1002 may contact the user when pushing a physical load to generate bone-conducted sound.

[0026] The movement component 1002 can be worn on the user's head through the wearing piece 1001. Of course, the wearing piece 1001 can also be replaced with other structures so that the movement component 1002 can be worn on the user's head through other structures and / or other wearing methods, which will not be elaborated.

[0027] Please refer to Figure 2, which is a schematic diagram of the frontal profile of a user's ear in some embodiments of the present application. The ear 200 may include physiological parts such as the external auditory canal 2001, the cavum concha 2002, the cymba concha 2003, the triangular fossa 2004, the antihelix 2005, the scaphoid 2006, the helix 2007, and the antitragus 2008. The external auditory canal 2001 has a certain depth and may extend to the eardrum. However, for ease of description, unless otherwise specified, the external auditory canal 2001 may refer to the ear canal of the ear 200. Alternatively, physiological parts such as the cavum concha 2002, the cymba concha 2003, and the triangular fossa 2004 may also have a certain volume and depth. The cavum concha 2002 may be directly connected to the external auditory canal 2001, meaning that the ear canal can be considered to be located at the bottom of the cavum concha 2002. In Figure 2, the user's head has a facial area M adjacent to the ear 200. In some embodiments, the facial region M may be located in front of the ear 200. Of course, the facial region M may also be divided and adjusted on the user's face as required by those skilled in the art.

[0028] It should be noted that in fields such as medicine and anatomy, the human body can be defined as three basic planes: the sagittal plane, the coronal plane, and the horizontal plane, as well as three basic axes: the sagittal axis, the coronal axis, and the vertical axis. The sagittal plane refers to a plane perpendicular to the ground, along the anterior-posterior direction of the body, dividing the body into left and right halves. The coronal plane refers to a plane perpendicular to the ground, along the lateral direction of the body, dividing the body into anterior-posterior halves. The horizontal plane refers to a plane parallel to the ground, along the lateral direction of the body, dividing the body into upper and lower halves. Accordingly, the sagittal axis refers to the axis along the lateral direction of the body and perpendicular to the coronal plane; the coronal axis refers to the axis along the lateral direction of the body and perpendicular to the sagittal plane; and the vertical axis refers to the axis along the lateral direction of the body and perpendicular to the horizontal plane. Furthermore, the "front side of the ear" described herein is a concept relative to the "back side of the ear." The former refers to the side of the ear facing the face, while the latter refers to the side of the ear facing away from the face. The human ear 200, viewed along the coronal axis, can be seen as shown in FIG2 .

[0029] 1 and 2 , when the acoustic output device 100 is worn on the user's head, it can be in a worn state, with the core assembly 1002 positioned adjacent to the ear 200. Alternatively, the core assembly 1002 can be positioned in contact with the user's head, the ear 200, or the face.

[0030] In some embodiments, when the acoustic output device 100 is worn, the movement assembly 1002 may be located in the facial region M adjacent to the ear 200, closer to the ear 200. In some embodiments, the movement assembly 1002 may contact the facial skin in the facial region M to achieve stable wearing. In some embodiments, the movement assembly 1002 in contact with the facial skin in the facial region M may push a physical load (e.g., the movement assembly 1002, the user's tissue, bones, etc.) to produce bone-conducted sound.

[0031] Referring to FIG. 1 , there may be two movement components 1002, for example, a first movement component 1003 and a second movement component 1004. The first movement component 1003 may be worn on the user's left ear 200, and the second movement component 1004 may be worn on the user's right ear 200. In some embodiments, there may be only one movement component 1002, for example, one of the first movement component 1003 and the second movement component 1004 may be omitted.

[0032] In some embodiments, the first movement component 1003 can be worn corresponding to the user's left ear 200 and can be located at the facial area M adjacent to the user's left ear 200, and the second movement component 1004 can be worn corresponding to the user's right ear 200 and can be located at the facial area M adjacent to the user's right ear 200.

[0033] Please refer to Figures 3 and 4 together. Figure 3 is a schematic diagram of the structure of the core assembly 1002 in some embodiments of the embodiment shown in Figure 1, and Figure 4 is an exploded view of the core assembly 1002 in the embodiment shown in Figure 3. Core assembly 1002 may include a housing 10 and an air conduction oscillator 20 carried by housing 10. Housing 10 may be used to support and mount air conduction oscillator 20. Air conduction oscillator 20 may generate air conduction sound for transmission to a user's ear 200.

[0034] In some embodiments, the air conduction vibrator 20 may include a diaphragm 21 , so that when the diaphragm 21 vibrates, it induces air vibration, pushes the air load through the air vibration principle to generate sound, and transmits the sound to the user's ear 200 .

[0035] In some embodiments, the housing 10 has a first acoustic cavity 201 and a second acoustic cavity 202 , and the first acoustic cavity 201 and the second acoustic cavity 202 are respectively located on both sides of the diaphragm 21 of the air conduction vibrator 20 .

[0036] In some embodiments, the first acoustic cavity 201 can be referred to as the "back cavity," and the second acoustic cavity 202 can be referred to as the "front cavity." In some embodiments, the distinction between the "front cavity" and the "back cavity" lies in that the "front cavity" is located on the side of the diaphragm 21 facing away from the magnetic circuit system 22, while the "back cavity" is located on the side of the diaphragm 21 closer to the magnetic circuit system 22. Of course, the distinction between the "front cavity" and the "back cavity" can also be made based on technical expertise in the field.

[0037] In some embodiments, the air conduction oscillator 20 may cooperate with the housing 10 to form a first acoustic cavity 201 and a second acoustic cavity 202 on both sides of the diaphragm 21 of the air conduction oscillator 20 .

[0038] In some embodiments, the first acoustic cavity 201 and the second acoustic cavity 202 may be connected, which helps reduce the resistance of the diaphragm 21 of the air conduction oscillator 20 during vibration. Of course, in some scenarios, the first acoustic cavity 201 and the second acoustic cavity 202 may not be connected, and the two acoustic cavities may be isolated from each other to help reduce interference between sounds. Specifically, the first acoustic cavity 201 and the second acoustic cavity 202 can be connected or disconnected according to the needs of those skilled in the art.

[0039] In some embodiments, the magnetic circuit system 22 is used to drive the diaphragm 21 to vibrate, that is, the magnetic circuit system 22 may also be part of the air conduction oscillator 20. Specifically, the process of vibrating the diaphragm 21 or the magnetic circuit system 22 driving the diaphragm 21 to vibrate can be implemented based on conventional techniques in the art and will not be described in detail.

[0040] In some embodiments, a sound outlet 103 communicating with the first acoustic cavity 201 is provided on the shell 10 . The sound outlet 103 is used to transmit the air-conducted sound generated by the air-conducted vibrator 20 from the first acoustic cavity 201 to the outside of the shell 10 .

[0041] In some embodiments, the housing 10 is provided with a first pressure relief hole 104 that communicates with the second acoustic cavity 202. This first pressure relief hole 104 allows the second acoustic cavity 202 to communicate with the external environment (outside the housing 10), allowing air to circulate between the second acoustic cavity 202 and the external environment, thereby reducing the resistance experienced by the diaphragm 21 of the air conduction element 20 during vibration. In some embodiments, the first pressure relief hole 104 can work in conjunction with the sound outlet 103 to reduce far-field sound leakage from the acoustic output device 100.

[0042] In some embodiments, the housing 10 may include a screen assembly 14 disposed at the first pressure relief hole 104. In some embodiments, the screen assembly 14 may adjust the sound emitted by the air conduction oscillator 20 to improve the acoustic performance of the acoustic output device 100. In some embodiments, the screen assembly 14 may have a dust-proof effect.

[0043] In some scenarios, users may wear the acoustic output device 100 during exercise, such as running, or during non-exercise. Research has found that the acoustic output device 100 occasionally exhibits poorer sound performance during exercise than during non-exercise. Further research has shown that users produce significant amounts of sweat during exercise, which accumulates in the first pressure relief holes 104, for example, on the screen assembly 14. This reduces the effective opening area of ​​the first pressure relief holes 104, thereby increasing the resistance to vibration of the diaphragm 21 of the air conduction oscillator 20 and degrading sound performance. This, in turn, increases sound leakage in the far field of the acoustic output device 100.

[0044] In some embodiments, to address the effects of sweat on the first pressure relief vent 104, the housing 10 is provided with a second pressure relief vent 105 that communicates with the second acoustic cavity 202. When the first pressure relief vent 104 is affected by sweat, the second pressure relief vent 105 assists the first pressure relief vent 104 by allowing air to flow in and out of the second acoustic cavity 202, compensating for the loss of the first pressure relief vent 104 due to sweat. The second pressure relief vent 105 also reduces the resistance of the diaphragm 21 of the air conduction oscillator 20 during vibration and, in conjunction with the sound outlet 103, reduces sound leakage in the far field of the acoustic output device 100.

[0045] It is understandable that when the acoustic output device 100 is in the worn state, the first pressure relief hole 104 may not only be blocked by sweat, but may even be blocked by dust, oil stains, water, obstacles, etc. The provision of the second pressure relief hole 105 can improve the disadvantages caused by the blocking of the first pressure relief hole 104 and reduce the impact of the first pressure relief hole 104 on the sound performance of the acoustic output device 100 when it is blocked.

[0046] In some embodiments, the housing 10 may have a first direction X, a second direction Y, and a third direction Z that are orthogonal to each other. When worn, the first direction X may be the coronal axis, or a direction at an angle to the coronal axis. When worn, the second direction Y may be the sagittal axis, or a direction at an angle to the sagittal axis. When worn, the third direction Z may be the vertical axis, or a direction at an angle to the vertical axis.

[0047] In some embodiments, the housing 10 may include a first housing wall 1101 and a second housing wall 1102 spaced apart along a first direction X. In the worn state, the first housing wall 1101 may face the user's head, and the second housing wall 1102 may be disposed on a side of the first housing wall 1101 facing away from the user's head.

[0048] In some embodiments, when worn, the first housing wall 1101 may face the facial area M in front of the user's ear 200, and the second housing wall 1102 may be located on a side of the first housing wall 1101 facing away from the facial area M. In some embodiments, the first housing wall 1101 may contact the facial skin at the facial area M.

[0049] In some embodiments, when worn, the sound hole 103 may be provided on the side of the housing 10 facing the ear 200. In some embodiments, when worn, the sound hole 103 is provided along the second direction Y on the side of the housing 10 facing the ear 200.

[0050] In some embodiments, the housing 10 further includes a third housing wall 1103 connecting the first housing wall 1101 and the second housing wall 1102. In some embodiments, the first pressure relief hole 104 is disposed on the third housing wall 1103.

[0051] When worn, the third shell wall 1103 can be arranged along the third direction Z on the side of the shell 10 away from the top of the user's head, thereby making the first pressure relief hole 104 located at a relatively low position on the vertical axis. When sweat flows on the surface of the shell 10, due to the action of gravity, at least part of the sweat flows downward along the vertical axis and accumulates at the first pressure relief hole 104, posing a risk of blocking the first pressure relief hole 104. Therefore, it is necessary to set the second pressure relief hole 105 to assist the first pressure relief hole 104 in relieving pressure. The second pressure relief hole 105 allows air to flow in and out of the second acoustic cavity 202, compensating for the deficiency of the first pressure relief hole 104 after being affected by sweat.

[0052] In addition, the location of the first pressure relief hole 104 is conducive to reducing sound leakage caused by sound waves propagating through the first pressure relief hole 104 and audible to the user.

[0053] In some embodiments, the second pressure relief hole 105 is disposed on the second shell wall 1102 , and thus is located at a different position from the first pressure relief hole 104 , thereby reducing the probability of the first pressure relief hole 104 and the second pressure relief hole 105 being blocked at the same time.

[0054] When worn, the second shell wall 1102 is located on the side of the first shell wall 1101 facing away from the user's head, thereby not contacting the user's facial skin, greatly reducing the possibility of sweat on the user's skin flowing to the second pressure relief hole 105. Of course, the second pressure relief hole 105 can also be provided on other shell walls of the housing 10 as needed.

[0055] In some embodiments, by simultaneously providing the first pressure relief hole 104 and the second pressure relief hole 105 , it is beneficial to suppress the generation of standing waves in the second acoustic cavity 202 , thereby improving the sound quality of the acoustic output device 100 .

[0056] In some embodiments, the housing 10 further includes a fourth housing wall 1104 connecting the first housing wall 1101 and the second housing wall 1102. The fourth housing wall 1104 can be disposed opposite to the third housing wall 1103 in the third direction Z.

[0057] In some embodiments, compared to the third shell wall 1103, the second pressure relief hole 105 is closer to the fourth shell wall 1104 in the third direction Z, so that the second pressure relief hole 105 is arranged farther away from the first pressure relief hole 104, reducing the probability of the first pressure relief hole 104 and the second pressure relief hole 105 being blocked at the same time.

[0058] When worn, the fourth shell wall 1104 is arranged along the third direction Z on the side of the shell 10 facing the top of the user's head, and the second pressure relief hole 105 is positioned close to the side of the top of the user's head, which is beneficial to reducing the impact of sound waves propagating through the second pressure relief hole 105 on the output effect of the acoustic output device 100.

[0059] In some embodiments, the second pressure relief hole 105 is arranged in an elongated strip shape, which can fully utilize the space on the shell 10 and can be arranged in a very small space.

[0060] In some embodiments, the opening area of ​​the second pressure relief hole 105 is not less than 4 mm 2 After research, if the opening area of ​​the second pressure relief hole 105 is less than 4mm 2 When the first pressure relief hole 104 is blocked, the second acoustic cavity 202 releases pressure through the second pressure relief hole 105. The pressure relief effect is poorer than that of the pressure relief through the first pressure relief hole 104 alone, which affects the sound effect. In this embodiment, the opening area of ​​the second pressure relief hole 105 is set to be no less than 4mm 2 When the first pressure relief hole 104 is blocked, the second acoustic cavity 202 releases pressure through the second pressure relief hole 105, and the output effect of the acoustic output device 100 is slightly damaged or almost unaffected, which helps to reduce the impact of the blockage of the first pressure relief hole 104 on the output effect of the acoustic output device 100. In some embodiments, the opening area of ​​the second pressure relief hole 105 is 4mm 2 , 4.5mm 2 , 5mm 2 , 5.5mm 2 , 6mm 2 , 6.5mm 2 , 7mm 2 , 7.5mm 2 and 8mm 2 Any one of the above is beneficial to reducing the impact of the blocking of the first pressure relief hole 104 on the output effect of the acoustic output device 100.

[0061] In some embodiments, the opening area of ​​the second pressure relief hole 105 can be smaller than the opening area of ​​the first pressure relief hole 104. In some scenarios, because the probability of the first pressure relief hole 104 being completely blocked is low, the opening area of ​​the second pressure relief hole 105 can be smaller than the opening area of ​​the first pressure relief hole 104. In some scenarios, because the second pressure relief hole 105 serves as an acoustic hole to assist the first pressure relief hole 104, the opening area of ​​the second pressure relief hole 105 can be smaller than the opening area of ​​the first pressure relief hole 104. In some scenarios, to reduce the impact of the simultaneous operation of the first and second pressure relief holes 104, 105 on the output of the acoustic output device 100, the opening area of ​​the second pressure relief hole 105 can be smaller than the opening area of ​​the first pressure relief hole 104.

[0062] Please refer to Figure 5, which is a schematic diagram of the second pressure relief hole 105 in the embodiment shown in Figure 3. In some embodiments, the second pressure relief hole 105 is arranged at an angle, which is beneficial for increasing the opening area of ​​the second pressure relief hole 105 within a limited space, thereby enhancing the effect of the second pressure relief hole 105 in assisting the first pressure relief hole 104, thereby reducing the impact on the sound output effect of the acoustic output device 100 while providing assistance.

[0063] In some embodiments, the length direction of the second pressure relief hole 105 forms an angle a with the third direction Z, and the angle a is no greater than 15°. In some embodiments, the angle a may be between 5° and 10°. In some embodiments, the angle a may be any one of 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, and 15°.

[0064] In some embodiments, the width N of the second pressure relief hole 105 is no greater than 1 mm, which can fully utilize the space on the housing 10 and improve space utilization. In some embodiments, the width N of the second pressure relief hole 105 is no greater than 0.8 mm. In some embodiments, the width N of the second pressure relief hole 105 is one of 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, and 1 mm.

[0065] Referring to FIG. 3 , the core assembly 1002 may further include a button 16 disposed on the housing 10, such as the second housing wall 1102. The button 16 may be used to control the acoustic output device 100 to ensure normal operation of the acoustic output device 100. In some embodiments, the button 16 may be used to control the air conduction oscillator 20. The button 16 may be a push button or a touch button, and other types of buttons are also possible, which will not be described in detail.

[0066] In some embodiments, the button 16 and the second pressure relief hole 105 may at least partially overlap in the second direction Y, so as to improve the appearance of the acoustic output device 100 through the cooperation of the button 16 and the second pressure relief hole 105 .

[0067] Of course, in some embodiments, the second pressure relief hole 105 can also be used to locate the button 16, allowing the user to quickly and easily sense the location of the button 16 through the position of the second pressure relief hole 105, facilitating user operation. In some embodiments, the button 16 and the second pressure relief hole 105 can completely overlap in the second direction Y. In some embodiments, the combination of the button 16 and the second pressure relief hole 105 can form an "!"-shaped pattern on the second housing wall 1102, enhancing the appearance of the acoustic output device 100.

[0068] In some embodiments, when worn, the second pressure relief hole 105 is closer to the ear 200 than the button 16 in the second direction Y, so that the user can touch the button 16 more easily. In addition, there is more space on the second shell wall 1102 to set the button 16.

[0069] 3 , in some embodiments, a button hole 107 may be further provided on the second shell wall 1102 . In addition, the button 16 may be provided in the button hole 107 .

[0070] In some embodiments, the button hole 107 and the second pressure relief hole 105 may at least partially overlap in the second direction Y. This coordination between the button hole 107 and the second pressure relief hole 105, and / or the coordination between the button 16 and the second pressure relief hole 105, enhances the appearance of the acoustic output device 100. In some embodiments, the button hole 107 and the second pressure relief hole 105 may completely overlap in the second direction Y. In some embodiments, the coordination between the button hole 107 and the second pressure relief hole 105 may form an "!"-shaped pattern on the second housing wall 1102, enhancing the appearance of the acoustic output device 100.

[0071] In some embodiments, when the wearer is in the wearing state, the second pressure relief hole 105 is closer to the ear 200 than the button hole 107 in the second direction Y, so that the user can touch the button 16 more easily.

[0072] In some embodiments, the second housing wall 1102 is provided with a microphone hole 108. Furthermore, the microphone hole 108 can cooperate with the microphone within the core assembly 1002, enabling the microphone to receive external sounds through the microphone hole 108. In some embodiments, along the second direction Y, the microphone hole 108 is located on the side of the second pressure relief hole 105 facing away from the sound outlet 103, and the microphone hole 108 and the second pressure relief hole 105 are respectively close to the edges of the second housing wall 1102 on opposite sides. This further distances the microphone hole 108 from the second pressure relief hole 105, thereby minimizing the impact of the sound output from the second pressure relief hole 105 on the microphone within the core assembly 1002 and reducing the possibility of echo.

[0073] In some embodiments, along the third direction Z, the microphone hole 108 is located in the middle position between the first pressure relief hole 104 and the second pressure relief hole 105, which is beneficial to take into account the impact of the sounds output by the first pressure relief hole 104 and the second pressure relief hole 105 on the microphone and reduce the possibility of echo.

[0074] Referring to Figures 3 and 4 , the second pressure relief hole 105 is closer to the sound outlet 103 than the button hole 107 or button 16 in the second direction Y. Furthermore, the outer surface of the second housing wall 1102 defines a first region 1107 and a second region 1108. The button hole 107 or button 16 is located in the first region 1107. The second pressure relief hole 105 is located in the second region 1108.

[0075] In order to prevent the second pressure relief hole 105 from being too close to the sound outlet 103, the second area 1108 is bent and connected to the first area 1107, and extends in the first direction X relative to the first area 1107 to the side away from the human face skin to form an area for reflecting sound leakage or guiding sound leakage. When the sound waves propagating through the second pressure relief hole 105 form sound leakage, the second area 1108 guides and / or reflects the sound leakage to prevent the sound waves propagating through the second pressure relief hole 105 from forming sound leakage and being heard by the user. In addition, the impact caused by the second pressure relief hole 105 being too close to the sound outlet 103 can also be reduced. Furthermore, the formation of the second area 1108 is caused by the shape limitation of the shell 10 itself, and the arrangement of the second pressure relief hole 105 in the second area 1108 can also make full use of the second area 1108, thereby improving space utilization.

[0076] In the wearing state, the second region 1108 is closer to the ear 200 than the first region 1107 in the second direction Y. The second region 1108 is located on the side of the first region 1107 facing the sound outlet 103 .

[0077] Please refer to Figure 6, which is a schematic diagram of a portion of the housing 10 in the embodiment shown in Figure 4. The housing 10 may include a screen assembly 15 that covers the second pressure relief hole 105. In some embodiments, the screen assembly 15 can modulate the sound emitted by the air conduction oscillator 20 to improve the acoustic performance of the acoustic output device 100. In some embodiments, the screen assembly 15 can provide dustproof and / or waterproof properties.

[0078] The screen assembly 15 may include a screen 152. The screen 152 may be disposed on the second housing wall 1102 and cover the second pressure relief hole 105. Sound generated by the air conduction element 20 within the second acoustic cavity 202 may be transmitted outside the housing 10 through the second pressure relief hole 105. The sound may pass through the screen 152. In some embodiments, the screen 152 may be a gauze or other type of acoustically impeding mesh.

[0079] Please refer to Figure 6, which is a schematic diagram of a portion of the housing 10 in the embodiment shown in Figure 4. A bezel 106 is provided on the inner side of the second housing wall 1102. The provision of bezel 106 expands the space within the housing 10. Bezel 106 can communicate with the second pressure relief hole 105. In some embodiments, bezel 106 can include a groove 1061, which can provide space for structures within the housing 10 and communicate with the second pressure relief hole 105.

[0080] The screen assembly 15 can be positioned within the recess 106, such as recess 1061, to cover the second pressure relief hole 105. Positioning the screen assembly 15 within the recess 106, such as recess 1061, can reduce the space occupied by the housing 10. In some embodiments, the screen assembly 15 can modulate the sound emitted by the air conduction oscillator 20 to improve the acoustic performance of the acoustic output device 100. In some embodiments, the screen assembly 15 can provide dustproof and / or waterproof properties.

[0081] Please refer to Figures 6, 7, and 8. Figure 7 is a partial structural schematic diagram of the partition mesh assembly 15 in the embodiment shown in Figure 6, and Figure 8 is a partial cross-sectional view of the partition mesh assembly 15 in the embodiment shown in Figure 7. The partition mesh assembly 15 may include an insert 151. The insert 151 may be embedded in the embedding groove 106, such as the groove 1061, and fixed relative to the shell 10, such as the shell wall. The partition mesh 152 may be arranged between the insert 151 and the second shell wall 1102, and cover the second pressure relief hole 105. The insert 151 can support the partition mesh 152, realize the installation of the partition mesh 152 at the second pressure relief hole 105, and ensure the stability of the partition mesh 152. In addition, the cooperation between the insert 151 and the partition mesh 152 can also facilitate the assembly and fixation of the shell 10, making the shell 10 easy to process.

[0082] In some embodiments, the insert 151 is provided with a sound guide hole 1501. When the insert 151 is embedded in the embedding groove 106, the sound guide hole 1501 and the second pressure relief hole 105 may at least partially overlap. Furthermore, the sound guide hole 1501 and the second pressure relief hole 105 can communicate, allowing the second acoustic cavity 202, the sound guide hole 1501, and the second pressure relief hole 105 to communicate. Sound generated by the air conduction oscillator 20 within the second acoustic cavity 202 can be transmitted outside the housing 10 through the sound guide hole 1501 and the second pressure relief hole 105. The sound can pass through the partition 152.

[0083] Please refer to Figures 8 and 9. Figure 9 is a schematic diagram of the structure of the insert 151 in the embodiment shown in Figure 7. The insert 151 forms an annular contact area 1502 between the periphery of the sound guide hole 1501 and the second pressure relief hole 105 and the inner wall of the second housing wall 1102. The annular contact area 1502 can accommodate the spacer 152, thereby sandwiching the spacer 152 between the insert 151 and the second housing wall 1102.

[0084] 6 , 7 and 8 , the partition 152 may include a partition body 1521 and an extension 1522 . The partition body 1521 and the extension 1522 are bent and connected to increase the overall area of ​​the partition 152 , making it easier to assemble and fix with the insert 151 .

[0085] The housing 10 further includes a support surface 1111 for supporting the insert 151 along the second direction Y. The screen body 1521 is disposed between the insert 151 and the inner surface of the second housing wall 1102. The extension portion 1522 may be disposed between the insert 151 and the support surface 1111.

[0086] 7 , 8 , and 9 , the insert 151 is provided with a first receiving groove 1503 and a second receiving groove 1504 to accommodate the fixed screen 152. The provision of the first receiving groove 1503 and the second receiving groove 1504 allows the insert 151 to be closer to the second shell wall 1102 and the support surface 1111, thereby improving space utilization within the shell 10.

[0087] In some embodiments, the first receiving groove 1503 can be disposed on a side of the insert 151 facing the inner wall surface of the second shell wall 1102. In some embodiments, the partition body 1521 can be received and fixed in the first receiving groove 1503.

[0088] In some embodiments, the second receiving groove 1504 can be disposed on a side of the insert 151 facing the support surface 1111. In some embodiments, the extension portion 1522 can be received and fixed in the second receiving groove 1504.

[0089] Referring to Figure 6 , the inner surface of the second housing wall 1102 is provided with a first flange 112 for supporting the air conduction vibrator 20. In some embodiments, the bezel 106 is configured to form a first notch 1121 on the first flange 112, and the bezel 151 is provided with a first filling portion 1513 for filling the first notch 1121. At least a portion of the bezel 151 can be positioned between the air conduction vibrator 20 and the second housing wall 1102 to support the air conduction vibrator 20. The provision of the first notch 1121 facilitates the assembly and securement of the bezel 151.

[0090] In some embodiments, the first flange 112 may extend to the first shell wall 1101 , the third shell wall 1103 , or the fourth shell wall 1104 .

[0091] Referring to Figure 4 , the housing 10 may include a fifth wall 1105 and a sixth wall 1106 spaced apart along the second direction Y. The fifth wall 1105 and the sixth wall 1106 are both connected to the first wall 1101, the second wall 1102, the third wall 1103, and the fourth wall 1104. In the second direction Y, the fifth wall 1105 may be closer to the ear portion 200 than the sixth wall 1106. In some embodiments, the sound outlet 103 may be provided in the fifth wall 1105.

[0092] In some embodiments, the first shell wall 1101 , the second shell wall 1102 , the third shell wall 1103 , the fourth shell wall 1104 , the fifth shell wall 1105 and the sixth shell wall 1106 may be arranged to form the housing 10 .

[0093] In some embodiments, the main shell 11 can be formed by at least the second shell wall 1102, the third shell wall 1103, the fourth shell wall 1104 and the sixth shell wall 1106. In some embodiments, the fifth shell wall 1105 can be detached from the shell 10 to form an independent structure, which is called the cover body 12. In some embodiments, the first shell wall 1101 can be detached from the shell 10 to form an independent structure, which is called the assembly shell 13. Furthermore, in some embodiments, the shell 10 may include a main shell 11, a cover body 12 and an assembly shell 13. Among them, the main shell 11 can be connected to the cover body 12 in the second direction Y, and can be connected to the assembly shell 13 in the first direction X. Of course, the cover body 12 and the assembly shell 13 can also be connected. The assembly method of the main shell 11, the cover body 12 and the assembly shell 13 can facilitate the assembly and processing of the shell 10.

[0094] It is understood that the main housing 11 is not limited to the second housing wall 1102, the third housing wall 1103, the fourth housing wall 1104, and the sixth housing wall 1106, but may also include other components. Of course, the main housing 11 may also have other structures. The cover 12 is not limited to the fifth housing wall 1105, but may also include other components. Of course, the cover 12 may also have other structures. The assembly housing 13 is not limited to the first housing wall 1101, but may also include other components. Of course, the assembly housing 13 may also have other structures.

[0095] In some embodiments, the support surface 1111 may be disposed on the sixth housing wall 1106 .

[0096] In some embodiments, the microphone hole 108 may be set at the edge of the second shell wall 1102 on one side close to the sixth shell wall 1106, or at the corner where the second shell wall 1102 and the sixth shell wall 1106 are connected, or at the corner where the second shell wall 1102, the third shell wall 1103 and the sixth shell wall 1106 are connected.

[0097] In some embodiments, the second pressure relief hole 105 can be provided on the edge of the second housing wall 1102 close to the fifth housing wall 1105, or on the edge of the second housing wall 1102 close to the fourth housing wall 1104. Referring to FIG. 4 , the cover 12 can be provided on the end surface of the second housing wall 1102. It can also be provided on the end surfaces of the first housing wall 1101, the third housing wall 1103, and the fourth housing wall 1104. Of course, it can also be provided on the assembly housing 13.

[0098] Referring to Figure 6, a second flange 113 for positioning the cover body 12 is provided on the end surface of the second shell wall 1102. In some embodiments, the second flange 113 can be connected and fixed to the cover body 12. The embedding groove 106, such as the groove 1061, is configured to form a second notch 1131 on the second flange 113. The embedding block 151 is provided with a second filling portion 1514 for filling the second notch 1131. When the second filling portion 1514 is located in the second notch 1131, the second flange 113 can cooperate with the cover body 12 to position and / or fix the second filling portion 1514, thereby improving the installation stability of the partition mesh assembly 15.

[0099] In some embodiments, the first filling portion 1513 and the second filling portion 1514 cooperate to fill the embedding groove 106, such as the groove 1061, and can form a fixing portion 1511. The fixing portion 1511 can be fixed in the embedding groove 106, such as the groove 1061, by adhesive bonding. At the same time, the fixing portion 1511 can also be positioned and / or fixed by the second flange 113 and the cover body 12.

[0100] In some embodiments, the embedding groove 106 is configured to form a positioning recess 1062 on the support surface 1111. The positioning recess 1062 can be connected to the groove 1061 to cooperate with the installation of the partition net assembly 15. In some embodiments, the embedding block 151 can be embedded in the positioning recess 1062. In some embodiments, the positioning of the embedding block 151 by the positioning recess 1062, and the positioning and / or fixing of the embedding block 151 by the second flange 113 and the cover body 12 can achieve the positioning and / or fixing of the partition net assembly 15, so as to improve the installation stability of the partition net assembly 15. In some embodiments, the embedding block 151 may include a positioning portion 1512 accommodated in the positioning recess 1062. The positioning portion 1512 can be connected as a whole with the fixing portion 1511 to form the embedding block 151.

[0101] In some embodiments, the first receiving groove 1503 may be disposed on a side of the insert 151 , such as the fixing portion 1511 , facing the inner wall surface of the second shell wall 1102 .

[0102] In some embodiments, the second receiving groove 1504 may be disposed on a side of the insert 151 , such as the positioning portion 1512 , facing the support surface 1111 .

[0103] In some embodiments, the sound guide hole 1501 may be at least provided on the fixing portion 1511 , and of course may also be partially provided on the positioning portion 1512 .

[0104] Referring to Figures 4 and 6, the housing 10 further includes a partition wall 111. The partition wall 111 is used to separate the internal space of the housing 10 into a first accommodating chamber 101 and a second accommodating chamber 102 that are spaced apart from each other. After being divided, the internal space of the housing 10 can be partitioned for different functions of the acoustic output device 100 to improve space utilization and reduce mutual influence between different functional components. In some embodiments, the first accommodating chamber 101 and the second accommodating chamber 102 are arranged in the second direction Y and are closer to the ear 200 than the second accommodating chamber 102. Furthermore, when the air conduction vibrator 20 is disposed in the first accommodating chamber 101, the transmission distance of the sound generated by the vibration of the air conduction vibrator 20 can be shortened, thereby improving the sound pressure level of the acoustic output device 100.

[0105] In some embodiments, the sound outlet hole 103 , the first pressure relief hole 104 , and the second pressure relief hole 105 may all be in communication with the first accommodating cavity 101 .

[0106] In some embodiments, the first accommodating cavity 101 may be formed by a partition wall 111 , a first shell wall 1101 , a second shell wall 1102 , a third shell wall 1103 , a fourth shell wall 1104 and a fifth shell wall 1105 .

[0107] In some embodiments, the first accommodating cavity 101 may be formed by a partition wall 111 , a second shell wall 1102 , a third shell wall 1103 , a fourth shell wall 1104 and a fifth shell wall 1105 .

[0108] In some embodiments, the first accommodating cavity 101 may be formed by connecting the main shell 11 and the cover 12 .

[0109] In some embodiments, the main shell 11 may have a first sub-accommodating chamber 1011, and the cover body 12 may have a second sub-accommodating chamber 1012. When the main shell 11 is connected to the cover body 12, the first sub-accommodating chamber 1011 and the second sub-accommodating chamber 1012 form a first accommodating chamber 101.

[0110] In some embodiments, the first acoustic cavity 201 and the second acoustic cavity 202 may be disposed in the first accommodating cavity 101. In some embodiments, the first acoustic cavity 201 is located on the side of the diaphragm 21 facing the fifth shell wall 1105, and the second acoustic cavity 202 is located on the side of the diaphragm 21 facing the partition wall 111.

[0111] In some embodiments, the microphone in the core assembly 1002 may be located in the second accommodating cavity 102 , and the microphone hole 108 may be in communication with the second accommodating cavity 102 .

[0112] In some embodiments, the screen assembly 15 can be disposed within the first accommodating chamber 101. In some embodiments, the support surface 1111 can be disposed on the partition wall 111. Furthermore, in some embodiments, the insert 151, such as the positioning portion 1512, can abut against the partition wall 111. In some embodiments, the positioning recess 1062 can be disposed on the partition wall 111.

[0113] In some embodiments, the second accommodating cavity 102 may be formed by a partition wall 111 , a first shell wall 1101 , a second shell wall 1102 , a third shell wall 1103 , a fourth shell wall 1104 and a sixth shell wall 1106 .

[0114] In some embodiments, the second accommodating cavity 102 may be formed by connecting the main housing 11 and the assembly shell 13 .

[0115] In some embodiments, the main shell 11 may have a third sub-accommodating chamber 1021, and the assembly shell 13 may have a fourth sub-accommodating chamber 1022. When the main shell 11 is connected to the assembly shell 13, the third sub-accommodating chamber 1021 and the fourth sub-accommodating chamber 1022 form a second accommodating chamber 102.

[0116] Referring to Figure 4 , the core assembly 1002 may also include a bone conduction transducer 30 disposed within the second housing cavity 102. The bone conduction transducer 30 can generate bone-conducted sound. In some embodiments, the first housing wall 1101 may contact the skin of a person's face in the facial region M, thereby enabling the bone conduction transducer 30 to push a physical load (e.g., the first housing wall 1101, the user's tissue, bones, etc.) to generate bone-conducted sound.

[0117] In the several embodiments provided in this application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of modules or units is merely a logical functional division. In actual implementation, other division methods may be used, such as combining or integrating multiple units or components into another system, or ignoring or not implementing certain features.

[0118] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0119] In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The above-mentioned integrated units may be implemented in the form of hardware or software functional units.

[0120] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An acoustic output device, characterized in that: The acoustic output device comprises a shell and an air conduction vibrator, wherein the air conduction vibrator is arranged in the shell, the shell has a first acoustic cavity and a second acoustic cavity, the first acoustic cavity and the second acoustic cavity are respectively located on both sides of the diaphragm of the air conduction vibrator, and the shell is provided with a sound outlet hole, a first pressure relief hole and a second pressure relief hole, the sound outlet hole is connected to the first acoustic cavity, and the first pressure relief hole and the second pressure relief hole are both connected to the second acoustic cavity; The shell has a first direction, a second direction and a third direction orthogonal to each other, the shell includes a first shell wall and a second shell wall spaced apart along the first direction, the shell also includes a third shell wall, the third shell wall connects the first shell wall and the second shell wall, the first pressure relief hole is provided on the third shell wall, and the second pressure relief hole is provided on the second shell wall; In the wearing state, the first shell wall faces the user's head, the second shell wall is arranged on the side of the first shell wall away from the user's head, and the third shell wall is located on the side of the shell along the third direction away from the top of the user's head.

2. The acoustic output device according to claim 1, characterized in that The opening area of ​​the second pressure relief hole is not less than 4mm 2 .

3. The acoustic output device according to claim 1, characterized in that The shell further includes a fourth shell wall, which is spaced apart from the third shell wall in the third direction and connects the first shell wall and the second shell wall. In the wearing state, the fourth shell wall is located on a side of the shell along the third direction toward the top of the user's head; Compared with the third shell wall, the second pressure relief hole is closer to the fourth shell wall along the third direction.

4. The acoustic output device according to any one of claims 1 to 3, characterized in that: The second pressure relief hole is arranged in a long strip shape, and the width of the second pressure relief hole is not greater than 1 mm.

5. The acoustic output device according to any one of claims 1 to 3, characterized in that: The acoustic output device further includes a button disposed on the second shell wall, and the button and the second pressure relief hole at least partially overlap in the second direction.

6. The acoustic output device according to claim 5, characterized in that In the wearing state, compared with the button, the second pressure relief hole is closer to the user's ear in the second direction.

7. The acoustic output device according to any one of claims 1 to 3, characterized in that: The second shell wall is provided with a microphone hole; Along the second direction, the microphone hole is located on a side of the second pressure relief hole away from the sound outlet hole, and the microphone hole and the second pressure relief hole are respectively close to edges of the second shell wall on opposite sides.

8. The acoustic output device according to any one of claims 1 to 3, characterized in that: The acoustic output device further includes a partition net connected to the shell and located at the second pressure relief hole.

9. The acoustic output device according to claim 8, characterized in that The shell is further provided with an embedding groove located on the inner side of the second shell wall, and the acoustic output device further includes an embedding block, which is embedded in the embedding groove and fixed relative to the shell. The partition net is arranged between the embedding block and the shell and covers the second pressure relief hole.

10. The acoustic output device according to claim 9, characterized in that The insert is provided with a sound guide hole. When the insert is embedded in the embedding groove, the sound guide hole and the second pressure relief hole at least partially overlap, and the insert forms an annular abutment area between the periphery of the sound guide hole and the second pressure relief hole and the inner wall surface of the second shell wall.

11. The acoustic output device according to claim 9, characterized in that The shell is further provided with a supporting surface for supporting the insert along the second direction, and the partition net includes a partition net body and an extension portion, the partition net body is arranged between the insert and the inner wall surface of the second shell wall, and the extension portion is bent and connected to the partition net body and is arranged between the insert and the supporting surface.

12. The acoustic output device according to claim 11, characterized in that The insert block is provided with a first accommodating groove and a second accommodating groove, the partition net body is accommodated and fixed in the first accommodating groove, and the extension portion is accommodated and fixed in the second accommodating groove.

13. The acoustic output device according to claim 9, characterized in that A first flange for supporting the air conduction vibrator is arranged on the inner wall surface of the second shell wall, the embedding groove is arranged to form a first notch on the first flange, and a first filling portion for filling the first notch is arranged on the embedding block.

14. The acoustic output device according to claim 13, characterized in that The shell also includes a cover body covered on the end surface of the second shell wall, a second flange for positioning the cover body is arranged on the end surface of the second shell wall, the embedding groove is arranged to form a second notch on the second flange, and a second filling portion for filling the second notch is arranged on the embedding block.

15. The acoustic output device according to claim 9, characterized in that The shell also includes a partition wall, which is used to divide the internal space of the shell into a first accommodating chamber and a second accommodating chamber that are spaced apart from each other, the first accommodating chamber and the second accommodating chamber are arranged in the second direction, the first accommodating chamber is closer to the user's ear than the second accommodating chamber, the air conduction vibrator is accommodated in the first accommodating chamber, and the acoustic output device further includes a bone conduction vibrator arranged in the second accommodating chamber.

16. The acoustic output device according to claim 15, characterized in that The embedding groove is arranged to form a positioning recess on the partition wall, and the embedding block is embedded in the positioning recess.

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