Acoustic output equipment

Abstract

The utility model relates to acoustic output equipment, in particular to the technical field of electronic equipment. The acoustic output device further comprises a first separation net, the first separation net is connected to the shell and used for shielding the first pressure relief hole, a plurality of net holes penetrating through the first separation net are formed in the first separation net, each net hole in at least part of the multiple net holes forms a contour line on the outer surface of the first separation net, the contour line is provided with a minimum circumscribed ball, and the minimum circumscribed ball is located in the first separation net. The minimum circumscribed ball has a center of sphere, and the distance between a point on the contour line and the center of sphere varies in the circumferential direction of the contour line on at least a partial section of the contour line. According to the pressure relief device, the shapes of the meshes are modified, so that the meshes are non-circular meshes, the problem that water is accumulated in the circular meshes due to the tension effect is avoided, and the blocking degree of the first pressure relief holes is improved. In some scenes, the degree that the sound performance becomes poor due to the fact that the first pressure relief hole is covered by sweat of the user can be reduced at least in the movement of the user.

Description

Technical Field

[0001] The present application relates to the technical field of electronic devices, and in particular to an acoustic output device. Background Art

[0002] The earphones can be worn by the user to listen to sounds. The user can then listen to sounds during exercise such as running or non-exercise. However, in some scenarios, the user may find that the sound performance of the earphones during exercise is worse than that during non-exercise. Utility Model Content

[0003] The present application provides an acoustic output device, the acoustic output device comprising a shell and an air conduction vibrator, the air conduction vibrator being arranged in the shell, the shell having a first acoustic cavity and a second acoustic cavity, the first acoustic cavity and the second acoustic cavity being respectively located on both sides of a diaphragm of the air conduction vibrator, the shell being provided with a sound outlet hole and a first pressure relief hole, the sound outlet hole being communicated with the first acoustic cavity, and the first pressure relief hole being communicated with the second acoustic cavity;

[0004] The acoustic output device also includes a first partition net, which is connected to the shell and used to cover the first pressure relief hole. The first partition net is provided with a plurality of mesh holes that penetrate the first partition net, and at least some of the plurality of mesh holes each form a contour line on the outer surface of the first partition net. The contour line has a minimum circumscribed sphere, and the minimum circumscribed sphere has a center. On at least a portion of the contour line, the distance between a point on the contour line and the center changes along the circumference of the contour line.

[0005] The present application modifies the shape of the mesh to make the mesh non-circular, thereby avoiding the problem of water accumulation in the circular mesh due to tension, and improving the degree of blocking of the first pressure relief hole. In some scenarios, the present application can reduce the degree of deterioration of the sound performance caused by the first pressure relief hole being covered by the user's sweat, at least during the user's exercise. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. 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 creative work.

[0007] Figure 1 This is a schematic diagram of the structure of an acoustic output device in some embodiments of the present application;

[0008] Figure 2 is a schematic diagram of the front profile of a user's ear in some embodiments of the present application;

[0009] Figure 3 for Figure 1 A schematic diagram of the structure of the movement assembly in some embodiments of the embodiment shown;

[0010] Figure 4 for Figure 3 An exploded schematic diagram of the movement assembly in the illustrated embodiment;

[0011] Figure 5 for Figure 3 A schematic diagram of the assembly of a partial structure of a movement assembly in the illustrated embodiment;

[0012] Figure 6 for Figure 5 A schematic diagram of the structure of the movement assembly in the illustrated embodiment in other embodiments;

[0013] Figure 7 for Figure 6 A schematic structural diagram of the first partition screen in the illustrated embodiment;

[0014] Figure 8 for Figure 7 A schematic diagram of the contour lines formed by the mesh on the outer surface of the first spacer in the illustrated embodiment;

[0015] Fig. 9 for Figure 8 A schematic diagram of a structure in which the contour line in the illustrated embodiment has 3 sides in some embodiments;

[0016] Fig.10 for Figure 8 A schematic diagram of a structure in which the contour line in the embodiment shown has 4 sides in some embodiments;

[0017] Fig.11 for Figure 8 A schematic diagram of a structure in which the contour line in the embodiment shown has 5 sides in some embodiments;

[0018] Fig.12 for Figure 7 A schematic diagram of an orthographic projection of the first partition net on a reference plane defined by a first direction X and a second direction Y in the illustrated embodiment;

[0019] Fig.13 for Fig.12 A schematic diagram of an orthographic projection of the first partition net in the illustrated embodiment on a reference plane defined by a first direction X and a second direction Y in other embodiments;

[0020] Fig.14 for Fig.13 Schematic diagram of the orthographic projection of the first spacer in the illustrated embodiment on a reference plane defined by the first direction X and the second direction Y in other embodiments. DETAILED DESCRIPTION

[0021] The present application is 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, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0022] Reference to "embodiment" 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 explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0023] See also Figure 1 , Figure 1 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 conduction sound and bone conduction 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 conduction sound, and can also push a physical load (such as the acoustic output device 100, user tissue, bones, etc.) to produce bone conduction sound.

[0024] The acoustic output device 100 may include a wearable component 1001 and a core component 1002 connected to the wearable component 1001. The wearable component 1001 cooperates with the core component 1002 to enable the core component 1002 to be worn on the user's head.

[0025] 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 ears at the same time. Furthermore, the wearing piece 1001 can also be hung only on the user's ears, 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.

[0026] The core assembly 1002 is a structure for implementing the main functions of the acoustic output device 100. For example, the core assembly 1002 can push an air load to generate air conduction sound. For example, the core assembly 1002 can push a physical load (such as the core assembly 1002, user tissue, bones, etc.) to generate bone conduction sound. For example, the core assembly 1002 can realize other functions such as sound pickup and image display, which will not be described in detail.

[0027] In some embodiments, the movement assembly 1002 may not contact the user when pushing the air load to generate air conduction sound, but it may contact the user. In some embodiments, the movement assembly 1002 may contact the user when pushing the physical load to generate bone conduction sound.

[0028] 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 herein.

[0029] See also Figure 2 , Figure 2 It is a schematic diagram of the front profile of the 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. Among them, the external auditory canal 2001 has a certain depth and may extend to the eardrum, but for the convenience of description, the external auditory canal 2001 may refer to the ear hole of the ear 200 unless otherwise specified in the present application. In addition, physiological parts such as the cavum concha 2002, the cymba concha 2003, 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, that is, the ear hole can be regarded as being located at the bottom of the cavum concha 2002. Figure 2 In the embodiment, the user's head has a facial region 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 according to the needs of those skilled in the art.

[0030] It should be noted that in the fields of medicine and anatomy, three basic planes of the human body can be defined: 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. Among them, the sagittal plane refers to a plane perpendicular to the ground along the front-back direction of the body, which divides the human body into left and right parts; the coronal plane refers to a plane perpendicular to the ground along the left-right direction of the body, which divides the human body into front and back parts; the horizontal plane refers to a plane parallel to the ground along the up-down direction of the body, which divides the human body into upper and lower parts. Correspondingly, the sagittal axis refers to an axis along the front-back direction of the body and perpendicular to the coronal plane, the coronal axis refers to an axis along the left-right direction of the body and perpendicular to the sagittal plane, and the vertical axis refers to an axis along the up-down direction of the body and perpendicular to the horizontal plane. Furthermore, the "front side of the ear (front side of the ear)" described in the present application is a concept relative to the "back side of the ear (back side of the ear)", the former refers to the side of the ear facing the face, and the latter refers to the side of the ear facing away from the face. Figure 2 shown.

[0031] Please also read Figure 1 and Figure 2 When the acoustic output device 100 is worn on the user's head, it can be in a wearing state, and the core component 1002 can be arranged adjacent to the ear 200. Of course, the core component 1002 can also be in contact with the user's head, the ear 200, or the face.

[0032] In some embodiments, when the acoustic output device 100 is in a wearing state, the movement component 1002 may be located in the facial region M adjacent to the ear 200 to be closer to the ear 200. In some embodiments, the movement component 1002 may contact the facial skin at the facial region M to achieve stable wearing. In some embodiments, the movement component 1002 contacting the facial skin at the facial region M may push a physical load (e.g., the movement component 1002, user tissue, bones, etc.) to generate bone conduction sound.

[0033] See also Figure 1, the number of movement components 1002 may be two, for example, a first movement component 1003 and a second movement component 1004. The first movement component 1003 may be worn on the left ear 200 of the user, and the second movement component 1004 may be worn on the right ear 200 of the user. In some embodiments, the number of movement components 1002 may be one, for example, one of the first movement component 1003 and the second movement component 1004 may be omitted.

[0034] In some embodiments, the first movement component 1003 can be worn corresponding to the left ear 200 of the user and can be located at the facial area M adjacent to the left ear 200 of the user, and the second movement component 1004 can be worn corresponding to the right ear 200 of the user and can be located at the facial area M adjacent to the right ear 200 of the user.

[0035] Please also read Figure 3 and Figure 4 , Figure 3 for Figure 1 The schematic diagram of the structure of the movement assembly 1002 in some embodiments shown in the embodiment, Figure 4 for Figure 3 An exploded schematic diagram of a core assembly 1002 in the illustrated embodiment. The core assembly 1002 may include a housing 10 and an air conduction vibrator 20 carried by the housing 10. The housing 10 may be used to carry and install the air conduction vibrator 20. The air conduction vibrator 20 may generate air conduction sound to be transmitted to the ear 200 of the user.

[0036] In some embodiments, the air conduction vibrator 20 may include a diaphragm 21 , so that when the diaphragm 21 vibrates, air vibration is induced, and the air load is pushed to generate sound through the air vibration principle, and the sound is conducted to the user's ear 200 .

[0037] 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 oscillator 20 .

[0038] In some embodiments, the first acoustic cavity 201 may be referred to as a "rear cavity", and the second acoustic cavity 202 may be referred to as a "front cavity". In some embodiments, the distinction between the "front cavity" and the "rear cavity" is that the "front cavity" is located on the side of the diaphragm 21 away from the magnetic circuit system 22, and the "rear cavity" is located on the side of the diaphragm 21 close to the magnetic circuit system 22. Of course, the distinction between the "front cavity" and the "rear cavity" can also be divided based on the technology in the field.

[0039] In some embodiments, the air conduction vibrator 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 vibrator 20 .

[0040] In some embodiments, the first acoustic cavity 201 and the second acoustic cavity 202 may be connected, which is beneficial to reducing the resistance of the diaphragm 21 of the air conduction vibrator 20 during the vibration process. 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 202 are isolated from each other, which is beneficial to reducing interference between sounds. Specifically, the first acoustic cavity 201 and the second acoustic cavity 202 may be connected or not connected according to the needs of those skilled in the art.

[0041] 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 a part of the air conduction vibrator 20. Specifically, the process of the diaphragm 21 vibrating or the magnetic circuit system 22 driving the diaphragm 21 to vibrate can be implemented based on conventional techniques in the art, which will not be described in detail.

[0042] In some embodiments, a sound outlet hole 103 communicating with the first acoustic cavity 201 is provided on the shell 10 , and the sound outlet hole 103 is used to transmit the air conduction sound generated by the air conduction vibrator 20 from the first acoustic cavity 201 to the outside of the shell 10 .

[0043] In some embodiments, the housing 10 is provided with a first pressure relief hole 104 in communication with the second acoustic cavity 202. The first pressure relief hole 104 allows the second acoustic cavity 202 to be in communication with the external environment (outside the housing 10), that is, air can flow between the second acoustic cavity 202 and the external environment, thereby facilitating the reduction of the resistance of the diaphragm 21 of the air conduction vibrator 20 during the vibration process. In some embodiments, the first pressure relief hole 104 can cooperate with the sound outlet hole 103 to reduce the sound leakage of the acoustic output device 100 in the far field.

[0044] 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 vibrator 20 to improve the acoustic performance of the acoustic output device 100. In some embodiments, the screen assembly 14 may have a dustproof effect.

[0045] In some scenarios, users can wear the acoustic output device 100 during sports such as running or non-sports. Studies have found that the acoustic output device 100 occasionally has worse sound performance during sports than during non-sports. Further studies have shown that since users produce a lot of sweat during exercise, sweat easily accumulates at the first pressure relief hole 104, for example, on the isolation mesh assembly 14, which reduces the effective opening area of ​​the first pressure relief hole 104, thereby increasing the resistance of the diaphragm 21 of the air conduction vibrator 20 during vibration, resulting in poor sound performance. Correspondingly, the sound leakage of the acoustic output device 100 in the far field will also increase.

[0046] In some embodiments, based on the effect of sweat on the first pressure relief hole 104, the mesh of the isolation net assembly 14 can be improved. Specifically, the shape or size of the mesh can be adjusted to improve the phenomenon of water accumulation in the isolation net assembly 14, so that the water attached to the isolation net assembly 14 is reduced, and the degree of blocking of the first pressure relief hole 104 is improved. In some scenarios, at least during the user's exercise, the degree of deterioration of the sound performance of the first pressure relief hole 104 caused by the user's sweat can be reduced.

[0047] See also Figure 5 , Figure 5 for Figure 3 The assembly diagram of the partial structure of the movement assembly 1002 in the illustrated embodiment. The screen assembly 14 may include a first screen 141 for shielding the first pressure relief hole 104. The first screen 141 may play the role of support, protection, and isolation, and reduce the probability of foreign matter entering the first pressure relief hole 104.

[0048] The first isolation net 141 may be embedded in the first pressure relief hole 104 , and of course, may also be fixed to the first pressure relief hole 104 by bonding, clamping, etc., so as to shield the first pressure relief hole 104 .

[0049] The first separator 141 may be a mesh structure made of metal or other materials.

[0050] See also Figure 5 , the screen assembly 14 may further include a second screen 142 for shielding the first pressure relief hole 104. The second screen 142 may be closer to the first pressure relief hole 104 than the first screen 141. That is, the first screen 141 may shield the first pressure relief hole 104 on the outside of the housing 10, and the second screen 142 may shield the first pressure relief hole 104 on the inside of the first screen 141.

[0051] In some embodiments, the second partition net 142 may be provided under the support of the first partition net 141. In some embodiments, the second partition net 142 may be provided at a distance from the first partition net 141 to reduce the possibility of water penetrating the first partition net 141 and contacting the second partition net 142, and to reduce the possibility of water adhering between the first partition net 141 and the second partition net 142.

[0052] In some embodiments, the second partition net 142 can be an acoustic network. In some embodiments, the second partition net 142 can be a gauze or other mesh material that can act as a sound barrier.

[0053] See also Figure 6 and Figure 7 , Figure 6 for Figure 5 The schematic diagram of the structure of the movement assembly 1002 in other embodiments in the embodiment shown, Figure 7 for Figure 6A schematic diagram of the structure of the first partition net 141 in the illustrated embodiment. The first partition net 141 is provided with a plurality of mesh holes 1411 penetrating the first partition net 141, so as to play a role in transmitting air-conducted sound, so that the air-conducted sound generated by the air-conducted vibrator 20 is transmitted from the second acoustic cavity 202 to the first pressure relief hole 104, and then from the first pressure relief hole 104 to the mesh holes 1411, and finally transmitted to the outside of the housing 10.

[0054] In some embodiments, multiple meshes 1411 are distributed on the first partition net 141 at intervals, which is beneficial to increase the total through-hole area of ​​the first partition net 141 without increasing the area of ​​a single mesh 1411, and is beneficial to the transmission of sound waves in the second acoustic cavity 202. It can be understood that if the area of ​​a single mesh 1411 is increased, it is not conducive to the protection effect of the first partition net 141.

[0055] Figure 8 for Figure 7 Schematic diagram of the contour lines formed by the meshes 1411 on the outer surface of the first screen 141 in the illustrated embodiment. At least one mesh 1411 forms a contour line 1401 on the outer surface of the first screen 141, wherein one contour line 1401 corresponds to one mesh 1411. At least one contour line 1401 may be a closed contour line. Of course, in some cases, at least one contour line 1401 may be a non-closed contour line. Figure 8 The contour line 1401 shown in FIG. 1 is a closed contour line and corresponds to a mesh 1411 .

[0056] As an example, a mesh 1411 having a closed contour line is taken as an example for further description.

[0057] The contour line 1401 may have a minimum circumscribed sphere 1402, and correspondingly, the minimum circumscribed sphere 1402 may have a sphere center O. On at least a portion of the contour line 1401, the distance P between a point on the contour line 1401 and the sphere center O varies along the circumference of the contour line 1401. It can be understood that Figure 8 The contour line 1401 in the non-closed state can also form a minimum circumscribed sphere 1402 , and thus, on at least a portion of the contour line 1401 , the distance P between a point on the contour line 1401 and the sphere center O changes along the circumference of the contour line 1401 .

[0058] The contour line 1401 may also be located in the same plane based on the outer surface design of the first partition 141, and the minimum circumscribed sphere 1402 may be replaced by the minimum circumscribed circle, and the sphere center O may be replaced by the center of the minimum circumscribed circle.

[0059] Of course, based on the outer surface design of the first partition net 141 , all segments on the contour line 1401 may not be located in the same plane.

[0060] Research has found that the surface of water is curved due to tension, which adapts to the smooth boundary of the circle to a greater extent. Therefore, the boundary of the circular mesh is more suitable for water gathering, causing the circular mesh to be blocked by a water film.

[0061] When the distances P in the aforementioned embodiment are not completely equal, it indicates that the mesh 1411 is a non-circular mesh, and thus the tension balance when water is attached to the mesh 1411 is more easily destroyed, making it more difficult for water to accumulate in the mesh 1411, thereby improving the degree of blocking of the first pressure relief hole 104. In some scenarios, the phenomenon of sweat accumulation in the mesh 1411 can be improved at least during user exercise, thereby reducing the degree of deterioration in sound performance caused by the first pressure relief hole 104 being covered by the user's sweat.

[0062] In some embodiments, on the entire contour line 1401 , the distance P between a point on the contour line 1401 and the center of the sphere O changes along the circumference of the contour line 1401 , which is conducive to increasing the difficulty of water accumulation in the mesh 1411 and reducing the risk of water film blocking the mesh 1411 .

[0063] In some embodiments, the contour line 1401 may be a polygon with multiple straight edges 1412 , which helps to reduce the smoothness of the inner wall of the mesh 1411 , increase the difficulty of water film adhering to the inner wall of the mesh 1411 , and reduce the risk of water film blocking the mesh 1411 .

[0064] In some embodiments, the number of sides of the contour line 1401 is any one of 3, 4, 5 and 6, which is conducive to reducing the smoothness of the inner wall of the mesh 1411, increasing the difficulty of the water film adhering to the inner wall of the mesh 1411, and reducing the risk of the water film blocking the mesh 1411. Fig. 9 , Fig.10 and Fig.11 , Fig. 9 for Figure 8 In the embodiment shown, the contour line 1401 is a schematic diagram of a structure in which the number of sides is 3 in some embodiments. Fig.10 for Figure 8 The contour line 1401 in the embodiment shown is a schematic diagram of a structure in which the number of sides is 4 in some embodiments. Fig.11 for Figure 8 The illustrated embodiment is a schematic diagram of a structure in which the contour line 1401 has 5 sides in some embodiments.

[0065] See also Figure 8 and Fig. 9 The apex of the contour line 1401 can be rounded to form a curved edge 1413. The setting of the curved edge 1413 can facilitate the processing of the mesh 1411 on the first partition 141 and reduce the processing difficulty. In addition, the mesh 1411 can also be enlarged in a limited space to ensure the sound performance of the acoustic output device 100.

[0066] In some embodiments, the curved edge 1413 may be an arc-shaped edge.

[0067] In some embodiments, in the contour line 1401 , among the three edges connected in sequence, only the middle edge is a straight edge 1412 or a curved edge 1413 .

[0068] In some embodiments, in the contour line 1401 , a curved edge 1413 connects two adjacent straight edges 1412 .

[0069] In some embodiments, the diameter C of the smallest circumscribed ball 1402 is not less than 0.4 mm, which not only facilitates the processing of the mesh 1411 but also helps reduce the risk of the mesh 1411 being blocked by a water film.

[0070] See also Figure 3 and Figure 4 , the housing 10 may have a first direction X, a second direction Y and a third direction Z that are orthogonal to each other. In the worn state, the first direction X may be the coronal axis direction, or a direction that is angled with the coronal axis. In the worn state, the second direction Y may be the sagittal axis direction, or a direction that is angled with the sagittal axis. In the worn state, the third direction Z may be the vertical axis direction, or a direction that is angled with the vertical axis.

[0071] 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 a 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 away from the user's head.

[0072] In some embodiments, in the wearing state, the first shell wall 1101 may face the facial area M in front of the user's ear 200, and the second shell wall 1102 may be located on the side of the first shell wall 1101 away from the facial area M. In some embodiments, the first shell wall 1101 may contact the human facial skin at the facial area M.

[0073] In some embodiments, in the wearing state, the sound outlet hole 103 may be disposed on a side of the housing 10 facing the ear 200. In some embodiments, in the wearing state, the sound outlet hole 103 is disposed along the second direction Y on a side of the housing 10 facing the ear 200.

[0074] 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. In some embodiments, the first partition net 141 is fixed on the third housing wall 1103. In some embodiments, the first partition net 141 is connected to the outside of the third housing wall 1103 or is embedded in the third housing wall 1103. Of course, when the setting position of the first pressure relief hole 104 changes, the first partition net 141 can be connected to the outside of other housing walls of the housing 10.

[0075] 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, so that the first pressure relief hole 104 is located at a lower position on the vertical axis. When sweat flows on the surface of the shell 10, at least part of the sweat flows downward along the vertical axis and is easily accumulated at the first pressure relief hole 104. By setting a non-circular mesh 1411 in the first partition net 141, it is helpful to improve the degree of blockage of the first pressure relief hole 104.

[0076] In addition, the location of the first pressure relief hole 104 is conducive to reducing the risk of sound waves propagating through the first pressure relief hole 104 leaking and being heard by the user.

[0077] In some embodiments, the housing 10 is provided with a second pressure relief hole 105 in communication with the second acoustic cavity 202. When the first pressure relief hole 104 is affected by sweat, the second pressure relief hole 105 can assist the first pressure relief hole 104 in pressure relief, and the second pressure relief hole 105 enables air to enter and exit the second acoustic cavity 202, thereby making up for the deficiency of the first pressure relief hole 104 after being affected by sweat. The second pressure relief hole 105 can also reduce the resistance of the diaphragm 21 of the air conduction vibrator 20 during the vibration process, and can also cooperate with the sound outlet 103 to reduce the sound leakage of the acoustic output device 100 in the far field.

[0078] It is understandable that when the acoustic output device 100 is in the worn state, the first pressure relief hole 104 may be blocked not only by sweat but also by dust, oil stains, water, obstacles, etc. The provision of the second pressure relief hole 105 can improve the disadvantage caused by the blocking of the first pressure relief hole 104 and reduce the influence of the blocking of the first pressure relief hole 104 on the sound performance of the acoustic output device 100.

[0079] 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.

[0080] In the wearing state, the second shell wall 1102 is located on the side of the first shell wall 1101 away from the user's head, and thus does not contact the facial skin of the user's head, which greatly reduces 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 set on other shell walls of the shell 10 as needed.

[0081] In some embodiments, the opening area of ​​the second pressure relief hole 105 may be smaller than the opening area of ​​the first pressure relief hole 104 .

[0082] 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 may be disposed opposite to the third housing wall 1103 in the third direction Z.

[0083] In the wearing state, 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.

[0084] See also Fig.12 , Fig.12 for Figure 7 Schematic diagram of the orthographic projection of the first partition net 141 on the reference plane defined by the first direction X and the second direction Y in the illustrated embodiment. The minimum distance D between the mesh 1411 and the edge of the first partition net 141 is not less than 0.8 mm, which is conducive to simplifying the processing and manufacturing process of the first partition net 141, saving the processing and manufacturing cost of the first partition net 141, and also conducive to reducing the influence of the mesh 1411 on the structural strength and rigidity of the first partition net 141, and reducing the risk of damage or deformation of the first partition net 141. Wherein, the distance D refers to the minimum distance between the edge of the mesh 1411 and the edge of the first partition net 141 on the outer surface of the first partition net 141.

[0085] In some embodiments, the reference plane may be parallel to the first direction X and the second direction Y, respectively.

[0086] The plurality of meshes 1411 may include a plurality of first meshes 1414 and a plurality of second meshes 1415. Different patterns may be formed by the cooperation of the first meshes 1414 and the second meshes 1415 to improve the appearance of the acoustic output device 100. Of course, the arrangement of the first meshes 1414 and the second meshes 1415 may also be adjusted according to the needs of those skilled in the art.

[0087] In some embodiments, the diameter of the smallest circumscribed sphere of the contour line of the first mesh 1414 is smaller than the diameter of the smallest circumscribed sphere of the contour line of the second mesh 1415 .

[0088] In some embodiments, the contour line of the first mesh 1414 is the contour line 1401 described in any of the above embodiments. In some embodiments, the contour line of the second mesh 1415 is the contour line 1401 described in any of the above embodiments.

[0089] In some embodiments, the plurality of first meshes 1414 are arranged around the periphery of the plurality of second meshes 1415. The first meshes 1414 have a smaller diameter, which can enhance the strength of the area of ​​the first mesh 141 corresponding to the first mesh 1414, so as to play a supporting and fixing role. The second meshes 1415 have a larger diameter, which can enhance the flexibility of the area of ​​the first mesh 141 corresponding to the second mesh 1415, so as to play a supporting and protective role. Fig.12 In the embodiment, the first mesh 1414 is close to the edge of the first partition net 141, so that the rigidity of the first partition net 141 can be maintained within a reasonable range, so that it can be better connected and fixed with the third shell wall 1103 at the mesh 1411, and it also plays a supporting role for the first partition net 141. The second mesh 1415 is close to the middle of the first partition net 141, so that when the middle of the first partition net 141 is suspended in the air, it has stronger flexibility to better support and protect.

[0090] In some embodiments, the plurality of first meshes 1414 may not only include the first mesh 1414 and the second mesh 1415, but may also include other meshes. Furthermore, in some embodiments, the diameter of the smallest circumscribed sphere of the outline of the mesh 1411 may be set to increase in the direction toward the center of the outer surface of the first partition net 141, so as to optimize the strength distribution of the first partition net 141. That is, on the outer surface of the first partition net 141, in the direction from the edge toward the center, the mesh 1411 closest to the center of two adjacent meshes 1411 has a larger diameter of the smallest circumscribed sphere.

[0091] For example, in Fig.12 In the first direction X, the diameter of the smallest circumscribed sphere of the outline of the mesh 1411 is set to increase in the direction toward the center of the outer surface of the first partition net 141. Fig.12 In the second direction Y, the diameter of the minimum circumscribed sphere of the contour line of the mesh 1411 is set to increase in the direction toward the center of the outer surface of the first partition net 141.

[0092] See also Fig.13 , Fig.13 for Fig.12Schematic diagram of the orthographic projection of the first partition net 141 in the illustrated embodiment on the reference plane defined by the first direction X and the second direction Y in other embodiments. At least one water-isolating groove 1416 arranged in a long strip is arranged on the outer surface of the first partition net 141. The water-isolating groove 1416 can penetrate the first partition net 141. The provision of the water-isolating groove 1416 can reduce the outer surface of the first partition net 141. In addition, it can also reduce the structure of the first partition net 141 itself that can produce capillary phenomena. At the same time, the provision of the water-isolating groove 1416 can also destroy the tension balance of the water film covering the first partition net 141 based on the capillary phenomenon, increase the difficulty of water accumulation at the water-isolating groove 1416, and improve the degree of blocking of the first pressure relief hole 104. In some scenarios, the water-isolating groove 1416 can reduce the influence of sweat on the first pressure relief hole 104.

[0093] It can be understood that when water is located on the first partition net 141, the provision of the water isolation groove 1416 reduces the outer surface of the first partition net 141, and further when it is difficult for the water isolation groove 1416 to accumulate water, water can only accumulate on the remaining outer surface of the first partition net 141. The reduction of the outer surface of the first partition net 141 naturally causes the water to gather on the first partition net 141 and then drip.

[0094] 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, so that the first pressure relief hole 104 is located at a lower position on the vertical axis. When sweat flows on the surface of the shell 10, it tends to flow downward along the vertical axis and accumulate at the first pressure relief hole 104. By setting the water isolation groove 1416, it is helpful to improve the degree of blockage of the first pressure relief hole 104.

[0095] In some embodiments, there may be multiple water isolation grooves 1416 to better isolate the water film multiple times.

[0096] In some embodiments, the water-isolating groove 1416 is a through groove connecting the outer surface and the inner surface of the first isolation net 141, and can further play a role in transmitting air-conducted sound, so that the air-conducted sound generated by the air-conducting vibrator 20 is transmitted from the second acoustic cavity 202 to the first pressure relief hole 104, and then transmitted from the first pressure relief hole 104 to the water-isolating groove 1416, and finally transmitted to the outside of the shell 10. In some embodiments, at least part of the multiple water-isolating grooves 1416 are through grooves.

[0097] In some embodiments, the mesh 1411 may be arranged in an area where a plurality of water blocking grooves 1416 are arranged, so as to Fig.13 Then, a water isolation groove 1416 is provided on the first isolation net 141 provided with meshes 1411 for easy processing.

[0098] See also Fig.14 , Fig.14 for Fig.13 The first screen 141 in the illustrated embodiment is a schematic diagram of an orthographic projection on a reference plane defined by a first direction X and a second direction Y in other embodiments. When the water isolation grooves 1416 are through grooves, the meshes 1411 may be disposed around the periphery of a plurality of water isolation grooves 1416 .

[0099] See also Figure 4 , the housing 10 may include a fifth housing wall 1105 and a sixth housing wall 1106 spaced apart along the second direction Y. The fifth housing wall 1105 and the sixth housing wall 1106 may both be connected to the first housing wall 1101, the second housing wall 1102, the third housing wall 1103, and the fourth housing wall 1104. In the second direction Y, the fifth housing wall 1105 may be closer to the ear 200 than the sixth housing wall 1106. In some embodiments, the sound outlet 103 may be provided on the fifth housing wall 1105.

[0100] 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 .

[0101] 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 separated 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 separated 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 the main shell 11, the cover body 12 and the assembly shell 13. Among them, the main shell 11 can be connected with the cover body 12 in the second direction Y, and can be connected with 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.

[0102] It is understandable that the main housing 11 may not be 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 housing walls. Of course, the main housing 11 may also be a structure of other forms. The cover 12 may not be limited to the fifth housing wall 1105, but may also include other housing walls. Of course, the cover 12 may also be a structure of other forms. The assembly housing 13 may not be limited to the first housing wall 1101, but may also include other housing walls. Of course, the assembly housing 13 may also be a structure of other forms.

[0103] See also Figure 4The cover body 12 can be covered on the end surface of the second shell wall 1102. At the same time, it can also be covered on the end surfaces of the first shell wall 1101, the third shell wall 1103 and the fourth shell wall 1104. Of course, it can also be covered on the assembly shell 13.

[0104] See also Figure 4 , the shell 10 also includes a partition wall 111. The partition wall 111 is used to divide the internal space of the shell 10 into a first accommodating chamber 101 and a second accommodating chamber 102 that are spaced apart from each other. After the internal space of the shell 10 is divided, it can be partitioned for different functions of the acoustic output device 100 to improve space utilization and reduce the 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 arranged 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 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 surrounding walls such as 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 second accommodating cavity 102 may be formed by the partition wall 111 , the first shell wall 1101 , the second shell wall 1102 , the third shell wall 1103 , the fourth shell wall 1104 and the sixth shell wall 1106 .

[0112] In some embodiments, the second accommodating chamber 102 may be formed by connecting the main housing 11 and the assembly shell 13 .

[0113] 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 .

[0114] See also Figure 4 The core assembly 1002 may further include a bone conduction vibrator 30 disposed in the second accommodating cavity 102. The bone conduction vibrator 30 may generate bone conduction sound. In some embodiments, the first shell wall 1101 may contact the human face skin at the face area M, and then the bone conduction vibrator 30 may push the physical load (e.g., the first shell wall 1101, user tissue, bones, etc.) to generate bone conduction sound.

[0115] 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 implementation described above is only illustrative, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0116] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0117] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0118] 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 present application specification and drawings, or directly or indirectly used 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, the shell is provided with a sound outlet hole and a first pressure relief hole, the sound outlet hole is communicated with the first acoustic cavity, and the first pressure relief hole is communicated with the second acoustic cavity; The acoustic output device also includes a first partition net, which is connected to the shell and used to cover the first pressure relief hole. The first partition net is provided with a plurality of mesh holes that penetrate the first partition net, and at least some of the plurality of mesh holes each form a contour line on the outer surface of the first partition net. The contour line has a minimum circumscribed sphere, and the minimum circumscribed sphere has a center. On at least a portion of the contour line, the distance between a point on the contour line and the center changes along the circumference of the contour line.

2. The acoustic output device according to claim 1, characterized in that Each edge in the same contour line is in the same plane.

3. The acoustic output device according to claim 1, characterized in that The contour line is a closed contour line.

4. The acoustic output device according to claim 3, characterized in that The closed contour line is a polygon.

5. The acoustic output device according to claim 4, characterized in that The number of sides of the closed contour line is no more than 6.

6. The acoustic output device according to any one of claims 1 to 5, characterized in that: In the same contour line, among the three edges connected in sequence, only the middle edge is a straight line edge or a curved line edge.

7. The acoustic output device according to claim 1, characterized in that The diameter of the smallest circumscribed ball is not less than 0.4 mm.

8. The acoustic output device according to claim 1, characterized in that The plurality of meshes include a plurality of first meshes and a plurality of second meshes, wherein at least a portion of each of the plurality of first meshes forms the contour line on the outer surface of the first partition net, and / or at least a portion of each of the plurality of second meshes forms the contour line on the outer surface of the first partition net; A diameter of the smallest circumscribed sphere corresponding to the first mesh is smaller than a diameter of the smallest circumscribed sphere corresponding to the second mesh.

9. The acoustic output device according to claim 8, characterized in that The plurality of first mesh holes are disposed around the periphery of the plurality of second mesh holes.

10. The acoustic output device according to claim 1, characterized in that On the outer surface of the first partition net, in the direction from the edge toward the center, the mesh hole of two adjacent mesh holes that is closest to the center has a larger diameter of the smallest circumscribed sphere corresponding to it.

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