Earphone

Abstract

The utility model provides an earphone, which comprises a shell, an electro-acoustic transducer and an opening and closing assembly, and is characterized in that the electro-acoustic transducer is arranged in the shell and is provided with a hollow channel penetrating along the axial direction of the electro-acoustic transducer; the shell is provided with a first sound outlet hole, the first sound outlet hole is located in the side, facing the ear, of the shell, the hollow channel is communicated with the first sound outlet hole, the shell further comprises an outer side wall opposite to the electroacoustic transducer, the outer side wall is provided with an end face hole, and the hollow channel is communicated with the external environment through the end face hole; the opening and closing assembly is used for opening or closing communication between the first sound outlet hole and the external environment. According to the earphone, the hollow channel is arranged in the electroacoustic transducer, so that the length of a path through which air flow or sound flows between the first sound outlet hole and the end face hole can be reduced to the greatest extent, the permeability of the earphone is effectively improved, and the end face hole is arranged on the outer side wall opposite to the electroacoustic transducer, so that the sound transmission efficiency of the earphone is improved. The distance between the end face hole and the hollow channel can be better reduced, and the permeability of the earphone is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of sound-generating instruments, and in particular to an earphone. Background Art

[0002] Headphones have been widely used in people's daily life. They can be used with mobile phones, computers and other electronic devices. According to the way users wear headphones, they can generally be divided into headphones and in-ear headphones. Among them, headphones can be divided into earmuff headphones or on-ear headphones. Earmuff headphones or on-ear headphones can provide better sound quality than in-ear headphones, but long-term wearing will keep the ears and ear canals in a sealed environment for a long time, and the wearing experience is poor. Utility Model Content

[0003] The present application provides a headset that can improve the wearing experience of the user.

[0004] The present application provides an earphone, comprising a shell, an electroacoustic transducer and an opening and closing assembly, wherein the electroacoustic transducer is arranged in the shell, and the electroacoustic transducer is provided with a hollow channel penetrating along its own axial direction; the shell has a first sound outlet hole, the first sound outlet hole is located on a side of the shell facing the ear, the hollow channel is connected to the first sound outlet hole, the shell further comprises an outer side wall arranged opposite to the electroacoustic transducer, the outer side wall is provided with an end hole, and the end hole connects the hollow channel with the external environment;

[0005] The opening and closing component is used to open or close the connection between the first sound outlet and the external environment.

[0006] Optionally, the shell is formed with a first cavity, the first cavity is located between the electroacoustic transducer and the end hole, and the end hole is connected with the hollow channel through the first cavity.

[0007] Optionally, the opening and closing component is arranged in the first cavity of the shell and is located at the connection between the end hole and the hollow channel, and is used to open or close the connection between the end hole and the hollow channel.

[0008] Optionally, a distance between the end surface hole and a first surface of the electroacoustic transducer facing the end surface hole in the axial direction of the electroacoustic transducer is greater than or equal to 0.5 mm and less than or equal to 10 mm.

[0009] Optionally, the orthographic projection of the hollow channel on the outer side wall at least partially overlaps with the end surface hole;

[0010] Alternatively, the orthographic projection of the hollow channel on the outer side wall does not overlap with the end surface hole at all.

[0011] Optionally, a distance between a central axis of the end surface hole and a central axis of the hollow channel in a radial direction of the electroacoustic transducer is greater than or equal to 0 mm and less than or equal to 36 mm.

[0012] Optionally, a first channel is further formed in the first cavity, and the first channel connects the end hole and the hollow channel.

[0013] Optionally, the outer side wall is formed with a first annular protrusion surrounding the end hole and protruding toward the hollow channel, and the first annular protrusion defines the first channel.

[0014] Optionally, in the direction of the first annular protrusion toward the hollow channel, a height of the first annular protrusion is greater than or equal to 0 mm and less than or equal to 10 mm.

[0015] Optionally, the minimum cross-sectional area of ​​the first channel is greater than or equal to the maximum cross-sectional area of ​​the hollow channel.

[0016] Optionally, the shell has a first rear sound hole, the first rear sound hole is located on a side of the shell away from the ear, and the first rear sound hole is connected to the first cavity.

[0017] Optionally, the earphone also includes a middle shell, which covers the electroacoustic transducer, and defines a second cavity between the middle shell and the electroacoustic transducer, the second cavity is connected to the hollow channel, and the middle shell is provided with a connecting hole, which connects the second cavity and the end hole.

[0018] Optionally, the earphone also includes a middle shell, which covers the electroacoustic transducer to define a second cavity and a second channel that are not connected to each other, the second channel is connected to the hollow channel, and the middle shell is provided with a connecting hole connected to the second channel, and the connecting hole connects the second channel and the end hole.

[0019] Optionally, the middle shell includes a middle shell bottom wall arranged opposite to the electroacoustic transducer, the connecting hole is arranged on the middle shell bottom wall, the middle shell bottom wall is formed with a second annular protrusion surrounding the connecting hole and protruding toward the hollow channel, and the second annular protrusion defines the second channel connected to the hollow channel.

[0020] Optionally, in the direction of the second annular protrusion toward the hollow channel, a height of the second annular protrusion is greater than or equal to 0 mm and less than or equal to 10 mm.

[0021] Optionally, the minimum cross-sectional area of ​​the second channel is greater than or equal to the maximum cross-sectional area of ​​the hollow channel.

[0022] Optionally, the middle shell divides the first cavity into the second cavity and a third cavity, the shell is also provided with a second rear sound hole connected to the third cavity, the second rear sound hole is located on the side of the shell away from the ear, and the middle shell is provided with a first sound connecting hole, and the first sound connecting hole connects the second cavity and the third cavity.

[0023] Optionally, the bottom wall of the middle shell is in contact with the outer side wall.

[0024] Optionally, the middle shell divides the first cavity into the second cavity and a third cavity, the bottom wall of the middle shell is provided with a second sound outlet hole connected to the second cavity, the outer wall is provided with a third rear sound outlet hole, and the third rear sound outlet hole is connected to the second sound outlet hole.

[0025] Optionally, the minimum cross-sectional area of ​​the first sound outlet hole is greater than or equal to 15 square millimeters.

[0026] Optionally, an orthographic projection of the first sound outlet hole on a first reference plane at least partially overlaps with an orthographic projection of the hollow channel on the first reference plane, wherein the first reference plane is perpendicular to a central axis of the electroacoustic transducer.

[0027] Optionally, an area of ​​an orthographic projection of the first sound outlet hole on the first reference plane is larger than an area of ​​an orthographic projection of the hollow channel on the first reference plane.

[0028] Optionally, the electroacoustic transducer includes a diaphragm in a ring-shaped structure, the diaphragm surrounds the hollow channel, and an orthographic projection of the first sound outlet on the first reference plane at least partially overlaps with an orthographic projection of the diaphragm on the first reference plane.

[0029] Optionally, the earphone further includes a protective member having a mesh structure, and the protective member is arranged at the first sound outlet.

[0030] Optionally, the minimum cross-sectional area of ​​the hollow channel is greater than or equal to 5 square millimeters.

[0031] Optionally, the minimum cross-sectional area of ​​the end surface hole is greater than or equal to 15 square millimeters.

[0032] Optionally, a second reference plane is established with the three regions of the tragus, anti-tragus and anti-helix of the ear, and the projection of the first sound outlet and / or the end hole on the second reference plane along the coronal axis is located at or covers the area formed by the projection of the cymba concha, anti-helix, anti-tragus and tragus of the ear on the second reference plane along the coronal axis.

[0033] Optionally, a first minimum distance exists between a projection of the hollow channel on the second reference plane along the coronal axis and a projection of the ear hole on the second reference plane along the coronal axis.

[0034] There is a second minimum distance between the projection of the end hole on the second reference plane along the coronal axis and the projection of the ear hole on the second reference plane along the coronal axis, and the first minimum distance is less than or equal to the second minimum distance.

[0035] Optionally, the opening and closing component is arranged on the shell and located at the hollow channel of the electroacoustic transducer, and is used to open or close the hollow channel; or, the opening and closing component is arranged on the shell and located on one side of the first sound outlet hole, and is used to open or close the first sound outlet hole; or, the opening and closing component is arranged on the shell and located on one side of the end surface hole, and is used to open or close the end surface hole.

[0036] The earphones provided by the present application are provided with a hollow channel connected to the first sound outlet hole on the electroacoustic transducer, an end hole connected to the hollow channel on the outer side wall of the shell, and an opening and closing component for opening or closing the hollow channel. When the opening and closing component is closed, a closed listening environment can be provided for the ear to meet the user's needs for immersive experience. When the opening and closing component is opened, the first sound outlet hole is connected to the end hole through the hollow channel, so that the first sound outlet hole is connected to the external environment, thereby providing an open listening environment for the ear, allowing the user to listen to music while listening to external sounds, meeting the user's different listening needs, and can also dissipate the heat inside the earphone to keep the ear comfortable. In addition, by setting a hollow channel in the electroacoustic transducer, the path length of the airflow or sound flowing between the first sound outlet and the end hole can be minimized, thereby effectively improving the transparency of the earphone. Moreover, by setting the end hole on the outer wall opposite to the electroacoustic transducer, the distance between the end hole and the hollow channel can be better reduced, thereby further reducing the path length of the airflow or sound flowing between the first sound outlet and the end hole, thereby further improving the transparency of the earphone. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] 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, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0038] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0039] Figure 1 Schematic diagram of the structure of the ear;

[0040] Figure 2 It is a schematic diagram of the structure of the earphone in the related art when it is worn on the ear at a first viewing angle;

[0041] Figure 3 It is a schematic diagram of the structure of the earphone in the related art when it is worn on the ear at a second viewing angle;

[0042] Figure 4 A first cross-sectional structural diagram of the earphone provided in an embodiment of the present application when worn on the ear;

[0043] Figure 5 A second cross-sectional structural diagram of the earphone provided in an embodiment of the present application when worn on the ear;

[0044] Figure 6 A schematic diagram of the projection of the hollow channel, ear hole and end hole provided in the embodiment of the present application on the second reference plane H along the coronal axis direction;

[0045] Figure 7 A stereoscopic view of the earphone provided by an embodiment of the present application in an open state;

[0046] Figure 8 A stereoscopic view of the earphone provided by an embodiment of the present application in a sealed state;

[0047] Fig. 9 A third cross-sectional structural diagram of the earphone provided in an embodiment of the present application when worn on the ear;

[0048] Fig.10 A fourth cross-sectional structural diagram of the earphone provided in an embodiment of the present application when worn on the ear;

[0049] Fig.11 A fifth cross-sectional structural diagram of the earphone provided in an embodiment of the present application when worn on the ear;

[0050] Fig.12 This is a sixth cross-sectional structural diagram of the earphone provided in an embodiment of the present application when worn on the ear.

[0051] Reference numerals:

[0052] 100. Headphones;

[0053] 10. Shell; 11. First sound outlet hole; 12. Outer side wall; 121. End hole; 122. First annular convex portion; 13. First cavity; 131. First passage; 132. Second cavity; 133. Third cavity; 134. Second passage; 14. Inner side wall; 15. Connecting wall; 16. First rear sound outlet hole; 17. Second rear sound outlet hole; 18. Third rear sound outlet hole;

[0054] 20. electroacoustic transducer; 21. hollow channel; 22. basin frame; 23. diaphragm; 24. magnetic part;

[0055] 30. Opening and closing components;

[0056] 40, fourth cavity; 50, ear pad; 60, middle shell; 61, communication hole; 62, bottom wall of middle shell; 621, second annular protrusion; 622, second sound output communication hole; 63, first sound output communication hole;

[0057] 200. Ear; 210. Helix; 220. Scapha; 230. Antihelix; 240. Fossa triangularis; 250. Concha; 251. Concha; 252. Cavity concha; 260. Ear foramen; 270. Tragus; 280. Antitragus; 290. Earlobe. DETAILED DESCRIPTION

[0058] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0059] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the relative position relationship after connection remains unchanged. "Rotational connection" means that the two are connected to each other and can rotate relative to each other after connection. "Sliding connection" means that the two are connected to each other and can slide relative to each other after connection. The directional terms mentioned in the embodiments of the present application, such as "upper", "lower", "top", "bottom", "inside", "outside", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. "Multiple" means at least two.

[0060] In the embodiments of the present application, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0061] In the embodiments of the present application, "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0062] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0063] The present application will be described in detail below with reference to embodiments.

[0064] See also Figure 1 , Figure 1 It is a schematic diagram of the structure of the ear. Figure 1 2 shows some physiological positions of the ear. The user's ear 200 may include a helix 210, a scaphoid 220, an antihelix 230, a triangular fossa 240, a concha 250, an ear hole 260, a tragus 270, an antitragus 280, and an earlobe 290, wherein the concha 250 may include a scaphoid 251 and a cavum concha 252, and the ear hole 260 may also be referred to as an external auditory meatus or an opening of an external auditory canal.

[0065] It is understandable that the earphone 100 provided in the embodiment of the present application can be an earmuff earphone or a supra-ear earphone, wherein the earmuff earphone can be covered on the ear 200 when worn on the ear 200, so that the entire ear 200 is covered in the cavity formed by the earphone and the head, and this wearing method has better airtightness. When worn, supra-ear earphones are slightly different from earmuff earphones, and supra-ear earphones fit the auricle 210 of the ear 200. Relatively speaking, earmuff earphones are better in wearing airtightness than supra-ear earphones. However, both earmuff earphones and fitted earphones are better in airtightness when worn than in-ear earphones, thereby providing better sound quality.

[0066] Among them, see Figure 2 and Figure 3 , Figure 2 is a schematic diagram of the structure of the earphone in the related art when it is worn on the ear at a first viewing angle, Figure 3 It is a schematic diagram of the structure of the earphone in the related art when it is worn on the ear at a second viewing angle. In the related art, after the earmuff earphone 100a is worn on the ear, the human ear is completely wrapped by the earmuff earphone 100a and sealed in a relatively small space. When the ear is in this closed environment for a long time, it is easy to cause the temperature in the space to rise, and it is also easy to breed bacteria, thereby causing discomfort in the ear. It is understandable that the on-ear earphone in the related art, because it also covers the human ear, will also cause the same problem as the earmuff earphone 100a.

[0067] Based on this, see Figure 4 and Figure 5 , Figure 4 This is a first cross-sectional structural diagram of the earphone provided in an embodiment of the present application when worn on the ear. Figure 5 This is a second cross-sectional structural diagram of the earphone provided in the embodiment of the present application when worn on the ear. It can be understood that Figure 4 The middle opening and closing component is in the open state. Figure 5 The opening and closing assembly 30 in the housing 10 is in a closed state. The embodiment of the present application provides an earphone 100, comprising a housing 10, an electroacoustic transducer 20 and an opening and closing assembly 30, wherein the electroacoustic transducer 20 is disposed in the housing 10, and the electroacoustic transducer 20 is provided with a hollow passage 21 that penetrates along its own axis. It can be understood that since the electroacoustic transducer 20 is provided with a through hollow passage 21, the electroacoustic transducer 20 is roughly annular in structure.

[0068] The housing 10 of the earphone 100 has a first sound outlet 11, and the first sound outlet 11 is located on the side of the housing 10 facing the ear 200. It can be understood that when the earphone 100 is worn on the ear 200, the sound signal emitted by the electroacoustic transducer 20 can be transmitted to the ear hole 260 of the human ear through the first sound outlet 11, and then enter the ear canal. The first sound outlet 11 is connected to the hollow channel 21. The housing 10 includes an outer wall 12, and in the axial direction of the electroacoustic transducer 20, the outer wall 12 is arranged opposite to the electroacoustic transducer 20, and the outer wall 12 is provided with an end hole 121, and the end hole 121 connects the hollow channel 21 with the external environment. In this way, since the first sound outlet 11 is connected to the hollow channel 21, the first sound outlet 11 can be connected to the external environment through the hollow channel 21 and the end hole 121, so that the conduction of airflow and the transmission of sound can be achieved.

[0069] The opening and closing assembly 30 is used to open or close the connection between the first sound outlet 11 and the external environment.

[0070] The opening and closing component 30 may be disposed on the housing 10. The opening and closing component 30 may be disposed at the housing 10 as follows:

[0071] As a first achievable implementation, the opening and closing component 30 is disposed at the hollow passage 21 of the electroacoustic transducer 20, and is used to open or close the hollow passage 21. It can be understood that when the opening and closing component 30 is in a closed state, there is no communication between the first sound outlet hole 11 and the end hole 121. When the opening and closing component 30 is in an open state, the first sound outlet hole 11 can be communicated with the end hole 121 through the hollow passage 21, thereby realizing communication between the first sound outlet hole 11 and the external environment.

[0072] As a second achievable implementation, the opening and closing assembly 30 can be disposed on one side of the first sound outlet 11, for opening or closing the first sound outlet 11. In this way, the connection between the first sound outlet 11 and the external environment can be opened or closed by opening and closing the first sound outlet 11, that is, the connection between the fourth cavity 40 and the external environment can be opened or closed.

[0073] As a third feasible implementation, the opening and closing component 30 can also be arranged on one side of the end hole 121, for opening or closing the end hole 121. In this way, the connection between the first sound hole 11 and the external environment can be opened or closed by opening and closing the end hole 121, that is, the connection between the fourth cavity 40 and the external environment can be opened or closed.

[0074] It can be understood that the earphone 100 provided in the embodiment of the present application is provided with a hollow channel 21 connected to the first sound outlet hole 11 on the electroacoustic transducer 20, and an end hole 121 connected to the hollow channel 21 is provided on the outer wall 12 of the shell 10, and an opening and closing component 30 for opening or closing the hollow channel 21 is also provided. When the opening and closing component 30 is closed, a closed listening environment can be provided for the ear 200 to meet the user's needs for immersive experience. When the opening and closing component 30 is opened, the first sound outlet hole 11 is connected to the end hole 121 through the hollow channel 21, so that the fourth cavity 40 is connected with the external environment, thereby providing an open listening environment for the ear 200, allowing the user to listen to music while listening to external sounds, thereby meeting the user's different listening needs, and can also dissipate the heat inside the earphone 100 to keep the ear 200 comfortable. In addition, by setting a hollow channel 21 in the electroacoustic transducer 20, the path length of the airflow or sound flowing between the first sound outlet 11 and the end hole 121 can be minimized, thereby effectively improving the permeability of the earphone 100. Moreover, by setting the end hole 121 on the outer wall 12 opposite to the electroacoustic transducer 20, the distance between the end hole 121 and the hollow channel 21 can be better reduced, thereby further reducing the path length of the airflow or sound flowing between the first sound outlet 11 and the end hole 121, thereby further improving the permeability of the earphone 100.

[0075] It can be understood that the shape of the first sound outlet hole 11 and the end hole 121 can be circular, but is not limited to a circle, and can also include one or more of an ellipse, a runway, a triangle, a rectangle, a polygon or other complex shapes with decorative properties, and the present application does not impose any limitation thereto.

[0076] Among them, in order to improve the transparency of the earphone 100, the sizes of the first sound hole 11, the end hole 121 and the hollow channel 21 can be made as large as possible, that is, the larger the cross-sectional area of ​​the first sound hole 11, the end hole 121 and the hollow channel 21, the better the transparency of the earphone 100.

[0077] Exemplarily, the minimum cross-sectional area of ​​the first sound outlet hole 11 is greater than or equal to 15 square millimeters. In this way, the transparency of the earphone 100 can be effectively improved, and the quality of sound transmission can also be improved. Further preferably, the minimum cross-sectional area of ​​the first sound outlet hole 11 is greater than or equal to 25 square millimeters, and further preferably, the minimum cross-sectional area of ​​the first sound outlet hole 11 is greater than or equal to 40 square millimeters.

[0078] For ease of understanding, a first reference plane perpendicular to the central axis of the electroacoustic transducer 20 may be drawn. In some embodiments, the orthographic projection of the first sound outlet hole 11 on the first reference plane at least partially overlaps with the orthographic projection of the hollow channel 21 on the first reference plane. In this way, the radial distance between the first sound outlet hole 11 and the hollow channel 21 can be shortened as much as possible, thereby effectively shortening the path between the first sound outlet hole 11 and the hollow channel 21, further improving the transparency of the earphone 100.

[0079] Since the first sound outlet 11 also plays a role in sound output, in some embodiments, the area of ​​the orthographic projection of the first sound outlet 11 on the first reference plane may be larger than the area of ​​the orthographic projection of the hollow channel 21 on the first reference plane. In this way, while ensuring the sound quality, the transparency of the earphone 100 can also be effectively improved.

[0080] It can be understood that the electroacoustic transducer 20 includes a diaphragm 23 in an annular structure, the diaphragm 23 surrounds the hollow channel 21, and the sound signal generated by the vibration of the diaphragm 23 can be transmitted to the human ear 200 through the first sound outlet 11, wherein, in order to improve the sound quality of the first sound outlet 11, the orthographic projection of the first sound outlet 11 on the first reference plane overlaps with the orthographic projection of the diaphragm 23 on the first reference plane at least partially. In this way, the sound signal generated by the vibration of the diaphragm 23 can be better transmitted through the first sound outlet 11.

[0081] In some embodiments, considering that the first sound outlet 11 has a large area, the diaphragm 23 of the electroacoustic transducer 20 may be touched by the user. Based on this, the earphone 100 may further include a protective member having a mesh structure, wherein the protective member is arranged at the first sound outlet 11. In this way, the electroacoustic transducer 20 can be protected by the protective member. Exemplarily, the protective member may be a metal mesh, foam, mesh cloth or plastic bracket, etc. For example, a metal mesh, foam, mesh cloth or plastic bracket may be added to the first sound outlet 11 to protect the electroacoustic transducer 20. Among them, the metal mesh, foam, mesh cloth or plastic bracket may be fixed to the first sound outlet 11 by glue bonding, hot melting, injection molding, ultrasonic connection or other processes. For example, in some implementation processes, the metal mesh, mesh cloth or plastic bracket may be fixedly connected to the first sound outlet 11 by injection molding.

[0082] In some embodiments, in order to better cover the earphone 100 on the ear 200, please refer to Figure 4The earphone 100 has a fourth cavity 40 formed on one side facing the ear 200, and the first sound outlet 11 is connected to the fourth cavity 40. When the earphone 100 is worn, the fourth cavity 40 covers the ear 200. It can be understood that at this time, the sound signal generated by the diaphragm 23 of the electroacoustic transducer 20 can be transmitted to the fourth cavity 40 through the first sound outlet 11, and further transmitted to the ear hole 260 of the human ear, and then enters the ear canal.

[0083] For example, please refer to Figure 4 The earphone 100 may include an ear pad 50, which is disposed around the side of the housing 10 facing the ear 200, and defines a fourth cavity 40. When the earphone 100 is worn, the ear pad 50 fits the head, so that the ear 200 is covered by the ear pad 50. The ear pad 50 may be made of a flexible material, so as to improve wearing comfort.

[0084] Furthermore, in order to improve the conductivity between the ear 200 and the external environment when the earphone 100 is worn, a second reference plane is established with the three regions of the tragus 270, the antitragus 280 and the antihelix 230 of the ear 200, and the projection of the first sound outlet hole 11 and / or the end hole 121 along the coronal axis direction on the second reference plane is located in or covers the region formed by the projection of the hymena concha 251, the antihelix 230, the antitragus 280 and the tragus 270 of the ear 200 along the coronal axis direction on the second reference plane. Further preferably, the projection of the first sound outlet hole 11 and / or the end hole 121 along the coronal axis direction on the second reference plane is located in the region formed by the projection of the cavum concha 252 along the coronal axis direction on the second reference plane.

[0085] It can also be understood that when the earphone 100 is worn on the head, the ear pad 50 of the earphone 100 fits the head, and the outer periphery of the ear pad 50 that fits the head forms a ring, and the orthographic projection of the first sound outlet hole 11 and / or the end hole 121 on the head is located in the area after the ring is reduced by 10 mm to 15 mm inward, such as, the orthographic projection of the first sound outlet hole 11 and / or the end hole 121 on the head is located in the area after the ring is reduced by 10 mm, 12 mm or 15 mm inward. Further, the orthographic projection of the first sound outlet hole 11 and / or the end hole 121 on the head is located in the area after the ring is reduced by 16 mm to 25 mm inward, such as, the orthographic projection of the first sound outlet hole 11 and / or the end hole 121 on the head is located in the area after the ring is reduced by 16 mm, 20 mm or 25 mm inward. Furthermore, the orthographic projection of the first sound hole 11 and / or the end hole 121 on the head is located in the area after the ring is reduced inward by 26 mm to 35 mm, such as, the orthographic projection of the first sound hole 11 and / or the end hole 121 on the head is located in the area after the ring is reduced inward by 26 mm, 30 mm or 35 mm.

[0086] Understandable, see Figure 6 , Figure 6 Schematic diagram of the projection of the hollow channel, ear hole and end hole on the second reference plane H in the coronal axis direction provided in the embodiment of the present application. There is a first minimum distance D1 between the projection of the hollow channel 21 on the second reference plane H in the coronal axis direction and the projection of the ear hole 260 of the ear 200 on the second reference plane H in the coronal axis direction, and there is a second minimum distance D2 between the projection of the end hole 121 on the second reference plane H in the coronal axis direction and the projection of the ear hole 260 on the second reference plane H in the coronal axis direction. In order to further improve the degree of openness of the ear 200 to the outside world, the first minimum distance D1 is less than or equal to the second minimum distance D2. It can be understood that according to the above configuration, when the earphone 100 is in the open state, that is, when the opening and closing assembly 30 is in the open state, the tragus 270 and the ear hole 260 of the ear 200 can be seen through the first sound outlet hole 11, the end hole 121 and the hollow channel 21, so that the ear 200 is connected to the outside world.

[0087] It should be noted that the opening and closing component 30 is a component for opening or closing the hollow channel 21, and is mainly used for opening or closing the hollow channel 21. The present application does not impose any specific restrictions on its structure, as long as it can realize the opening or closing of the hollow channel 21. For example, the opening and closing component 30 can be a shutter component similar to a "shutter" structure, and the shutter component can include a plurality of blades, and the plurality of blades can move relative to the hollow channel 21 along the radial direction of the hollow channel 21, and the plurality of blades can be close to each other to realize the closing function, and the plurality of blades can be away from each other to realize the opening function. Exemplarily, a stereoscopic view of the open state of the earphone 100 is shown in FIG. Figure 7 As shown, the three-dimensional view of the sealed state of the earphone 100 is as shown in FIG. Figure 8 shown.

[0088] In some embodiments, the opening and closing component 30 is installed on the shell 10, and the opening and closing component 30 can be connected to a linkage mechanism (not shown) provided on the shell 10. One end of the linkage structure is located on the outside of the shell 10, and the other end of the linkage mechanism is connected to the opening and closing component 30, such as being connected to the blades of the opening and closing component 30. The user drives the linkage mechanism to open or close the opening and closing component 30 to achieve switching between an open state and a sealed state of the earphone 100.

[0089] In other embodiments, the linkage mechanism can be connected to a motor, and the motor is used to drive the linkage mechanism to realize the opening or closing of the opening and closing component 30. For example, the motor can receive instructions from the main control chip of the headset 100 to control the opening or closing of the opening and closing component 30.

[0090] The above is an introduction to the first sound outlet 11 of the earphone 100 and some of its related structures. In order to more clearly illustrate other structures of the earphone 100, such as the structure between the hollow channel 21 and the end hole 121, this will be introduced in detail below with reference to the accompanying drawings.

[0091] See also Figure 4 The housing 10 is formed with a first cavity 13, and the first cavity 13 is located between the electroacoustic transducer 20 and the end hole 121. At this time, the outer wall 12 of the earphone 100 and the electroacoustic transducer 20 are separately arranged, and the end hole 121 on the outer wall 12 is connected with the hollow channel 21 through the first cavity 13. It can be understood that when the opening and closing component 30 is opened, the hollow channel 21 is connected with the first cavity 13, and the first cavity 13 is connected with the end hole 121. In this way, the hollow channel 21 can be connected with the end hole 121 through the first cavity 13, that is, the first cavity 13 plays a role in connecting the hollow channel 21 and the end hole 121.

[0092] For example, please refer to Figure 4 The housing 10 includes an inner wall 14, an outer wall 12 and a connecting wall 15. The inner wall 14 and the outer wall 12 are arranged opposite to each other in the axial direction of the electroacoustic transducer 20. The connecting wall 15 is connected between the inner wall 14 and the outer wall 12. The inner wall 14, the outer wall 12 and the connecting wall 15 together define a first cavity 13. The first sound outlet 11 is arranged on the inner wall 14. It can be understood that when the earphone 100 is worn on the ear 200, the inner wall 14 is located on the side close to the ear 200.

[0093] It can also be understood that, in the above embodiment, the conduction between the hollow channel 21 and the end hole 121 is achieved through the first cavity 13. In order to improve the permeability between the hollow channel 21 and the end hole 121, the channel path between the end hole 121 and the first cavity 13 is as short as possible. Preferably, the outer side wall 12 provided with the end hole 121 can be fitted with the electroacoustic transducer 20. At this time, the end hole 121 and the hollow channel 21 of the electroacoustic transducer 20 do not need to be connected through the first cavity 13, but the end hole 121 is directly connected to the hollow channel 21 of the electroacoustic transducer 20, thereby further improving the permeability between the hollow channel 21 and the end hole 121.

[0094] It should be noted that the opening and closing component 30 can also be located in the first cavity 13 of the shell 10, at the connection between the hollow channel 21 and the end hole 121, for opening or closing the connection between the end hole 121 and the hollow channel 21. In this way, the connection or disconnection between the end hole 121 and the hollow channel 21 can be controlled to control the connection or disconnection between the first sound outlet 11 and the external environment. The opening and closing component 30 is arranged in the first cavity 13, and the shell 10 can be used to protect the opening and closing component 30, thereby alleviating or avoiding the wear of the opening and closing component 30.

[0095] In some embodiments, the orthographic projection of the hollow channel 21 on the outer sidewall 12 of the housing 10 at least partially overlaps with the end hole 121 on the outer sidewall 12. Alternatively, the orthographic projection of the hollow channel 21 on the outer sidewall 12 of the housing 10 does not overlap with the end hole 121 on the outer sidewall 12 at all.

[0096] Exemplarily, the orthographic projection of the hollow channel 21 on the outer side wall 12 of the housing 10 may overlap with the end hole 121 on the outer side wall 12. In this way, the hollow channel 21 and the end hole 121 may be directly connected along the axial direction of the electroacoustic transducer 20, thereby improving the connection effect between the two and enhancing the transparency of the earphone.

[0097] Exemplarily, the orthographic projection of the hollow channel 21 on the outer wall 12 of the housing 10 and the end hole 121 on the outer wall 12 may not overlap at all, that is, the orthographic projection of the hollow channel 21 on the outer wall 12 of the housing 10 and the end hole 121 on the outer wall 12 may be staggered. In this way, it is possible to meet the requirements of arranging the end hole 121 at various positions on the outer wall 12, and also meet the connection effect between the hollow channel 21 and the end hole 121, thereby improving the structural flexibility of the earphone.

[0098] Exemplarily, the radial spacing between the central axis of the end hole 121 and the central axis of the hollow channel 21 is between 0 mm and 36 mm, that is, greater than or equal to 0 mm, and less than or equal to 36 mm. In this way, the channel path between the end hole 121 and the hollow channel 21 can be set as short as possible to improve the permeability between the hollow channel 21 and the end hole 121. It can be understood that the smaller the spacing between the central axis of the end hole 121 and the central axis of the hollow channel 21, the better. Further preferably, the spacing between the central axis of the end hole 121 and the central axis of the hollow channel 21 is between 0 mm and 20 mm, that is, greater than or equal to 0 mm, and less than or equal to 20 mm. It is further preferred that the spacing between the central axis of the end hole 121 and the central axis of the hollow channel 21 is between 0 mm and 5 mm, that is, greater than or equal to 0 mm, and less than or equal to 5 mm. Among them, the distance between the center axis of the end hole 121 and the center axis of the hollow channel 21 can be set according to the specific situation. For example, the distance between the center axis of the end hole 121 and the center axis of the hollow channel 21 in the radial direction of the electroacoustic transducer 20 can be 36 mm, 20 mm, 10 mm, 5 mm or 0 mm. It can be understood that when the radial distance between the center axis of the end hole 121 and the center axis of the hollow channel 21 is 0 mm, the end hole 121 is coaxial with the hollow channel 21, and the permeability between the hollow channel 21 and the end hole 121 is optimal.

[0099] In some embodiments, in order to further improve the permeability between the hollow channel 21 and the end hole 121, the distance between the end hole 121 and the electroacoustic transducer 20 in the axial direction is as short as possible. Figure 4 The electroacoustic transducer 20 includes a first surface A facing the end surface hole 121, and a distance d1 between the end surface hole 121 and the first surface A in the axial direction of the electroacoustic transducer 20 is greater than or equal to 0.5 mm and less than or equal to 10 mm. For example, the distance d1 between the end surface hole 121 and the first surface A in the axial direction can be 0.5 mm, 1 mm, 2 mm, 4 mm, 6 mm, 8 mm, 10 mm, etc.

[0100] Specifically, Figure 4 As shown, the electroacoustic transducer 20 may include a basin frame 22, a diaphragm 23, a voice coil (not shown) and a magnetic member 24. The diaphragm 23 is arranged on the basin frame 22, and the diaphragm 23 and the basin frame 22 surround the hollow channel 21. The magnetic member 24 is arranged on the basin frame 22 and surrounds the hollow channel 21. Among them, the magnetic member 24 forms a magnetic circuit system of the electroacoustic transducer 20, and the diaphragm 23 and the voice coil form a vibration system of the electroacoustic transducer 20. One end of the voice coil is fixedly connected to the diaphragm 23, and the other end extends to the magnetic gap of the magnetic system. It can be understood that the magnetic system can drive the voice coil to move to drive the diaphragm 23 to vibrate and produce sound.

[0101] In some embodiments, in order to ensure the smooth flow between the earphone 100 and the external environment, the size of the hollow channel 21 of the electroacoustic transducer 20 can be made as large as possible, that is, the larger the cross-sectional area of ​​the hollow channel 21, the better the permeability of the earphone 100. Exemplarily, the minimum cross-sectional area of ​​the hollow channel 21 is greater than or equal to 5 square millimeters. Further preferably, the minimum cross-sectional area of ​​the hollow channel 21 is greater than or equal to 10 square millimeters, and further, the minimum cross-sectional area of ​​the hollow channel 21 is greater than or equal to 20 square millimeters.

[0102] It is also understandable that the size of the end hole 121 can be made as large as possible, that is, the larger the cross-sectional area of ​​the end hole 121, the better the permeability of the earphone 100. The minimum cross-sectional area of ​​the end hole 121 can be greater than or equal to 15 square millimeters, more preferably, the minimum cross-sectional area of ​​the end hole 121 can be greater than or equal to 25 square millimeters, and even more preferably, the minimum cross-sectional area of ​​the end hole 121 can be greater than or equal to 40 square millimeters.

[0103] In some embodiments, in order to better achieve airflow conduction between the hollow channel 21 and the end hole 121, please refer to Fig. 9 , Fig. 9 This is a third cross-sectional structural diagram of the earphone provided in the embodiment of the present application when worn on the ear. A first channel 131 may also be formed in the first cavity 13, and the first channel 131 connects the end hole 121 and the hollow channel 21. It can be understood that the airflow between the hollow channel 21 and the end hole 121 can be conducted through the first channel 131.

[0104] Exemplarily, in order to facilitate the formation of the first channel 131, a first annular protrusion 122 surrounding the end hole 121 and protruding toward the hollow channel 21 can be formed on the outer side wall 12 of the housing 10, and the first annular protrusion 122 defines the first channel 131. The first annular protrusion 122 can be sealed and connected to the hollow channel 21 by materials such as double-sided tape, glue or a sealing ring, so that the airflow between the hollow channel 21 and the end hole 121 can be conducted through the first channel 131.

[0105] It can be understood that the end hole 121 and the hollow channel 21 are connected through the first cavity, which can be connected through the cavity area in the first cavity 13 (that is, the present application Figure 4 The structure shown in the figure) may also be a channel formed by the structural member in the first cavity 13 (ie, the first channel 131, the present application Fig. 9 The structure shown) is connected.

[0106] It can be understood that the air flow between the hollow channel 21 and the end hole 121 is achieved through the first channel 131, so the channel path between the end hole 121 and the hollow channel 21 is as short as possible, that is, the length of the first channel 131 is as short as possible, so as to improve the permeability of the earphone 100.

[0107] It can also be understood that the length of the first channel 131 can be understood as the height of the first annular convex portion 122 in the direction toward the hollow channel 21, that is, in the direction of the first annular convex portion 122 toward the hollow channel 21, the height of the first annular convex portion 122 is as small as possible. Exemplarily, in the direction of the first annular convex portion 122 toward the hollow channel 21, the value range of the height of the first annular convex portion 122 can be between 0 mm and 10 mm, that is, the height of the first annular convex portion 122 is greater than or equal to 0 mm, and less than or equal to 10 mm. For example, the height of the first annular convex portion 122 can be 0 mm, 2 mm, 4 mm, 6 mm, 8 mm, 10 mm, etc. It can be understood that when the height of the first annular convex portion 122 is 0 mm, the outer side wall 12 provided with the end hole 121 is fitted with the electroacoustic transducer 20.

[0108] Among them, the first channel 131 plays the role of conducting airflow. Therefore, in order to effectively improve the permeability of the earphone 100, the minimum cross-sectional area of ​​the first channel 131 is greater than or equal to the maximum cross-sectional area of ​​the hollow channel 21 to improve the conductivity of the airflow.

[0109] Exemplarily, the minimum cross-sectional area of ​​the first channel 131 is greater than or equal to 5 square millimeters. Further preferably, the minimum cross-sectional area of ​​the first channel 131 is greater than or equal to 10 square millimeters. Even more preferably, the minimum cross-sectional area of ​​the first channel 131 is greater than or equal to 20 square millimeters.

[0110] It should be noted that, based on the end hole 121 and the hollow channel 21 being connected through the first channel 131 in the first cavity 13, the opening and closing component 30 can be located in the first channel 131 to open or close the connection of the first channel 131. Exemplarily, the opening and closing component 30 can be connected to the inner wall of the first channel 131. In this way, the installation difficulty of the opening and closing component 30 in the first cavity 13 can be reduced, and the connection or disconnection of the first channel 131 can be controlled by the opening and closing component 30, so as to realize the connection or disconnection of the end hole 121 and the hollow channel 21.

[0111] In some embodiments, in order to achieve the tuning function, a rear sound outlet may be provided on the earphone 100, such as, for example, Fig. 9The shell 10 has a first rear sound hole 16, which is located on a side of the shell 10 away from the ear 200. The first rear sound hole 16 is connected to the first cavity 13, so that the earphone 100 can be tuned through the first rear sound hole 16.

[0112] In the above-mentioned embodiment, the airflow conduction between the hollow channel 21 and the end hole 121 is achieved through the first channel 131 formed by the first annular protrusion 122 on the outer wall 12. In some other embodiments, other structures can also be used to achieve airflow conduction between the hollow channel 21 and the end hole 121.

[0113] Alternatively, see Fig.10 , Fig.10 The fourth cross-sectional structural diagram of the earphone provided in the embodiment of the present application when worn on the ear. The earphone 100 may also include a middle shell 60, which is covered by the electroacoustic transducer 20, and a second cavity 132 is defined between the middle shell 60 and the electroacoustic transducer 20, and the second cavity 132 is connected to the hollow channel 21, and the middle shell 60 is provided with a connecting hole 61, and the connecting hole 61 connects the second cavity 132 and the end hole 121. In this way, the airflow of the hollow channel 21 can flow to the end hole 121 via the second cavity 132 and the connecting hole 61, so as to realize the airflow conduction between the hollow channel 21 and the end hole 121.

[0114] It is understandable that, since the middle shell 60 is additionally provided, the middle shell 60 of different specifications and sizes can be provided as needed, and then the middle shell 60 of the required specifications and sizes can be selected and replaced for installation according to actual needs, thereby improving the practicality and convenience of the earphone 100.

[0115] In some other embodiments, see Fig.11 , Fig.11 The fifth cross-sectional structural diagram of the earphone provided in the embodiment of the present application when worn on the ear. The middle shell 60 is covered on the electroacoustic transducer 20 to define a second cavity 132 and a second channel 134 that are not connected to each other. The second channel 134 is connected to the hollow channel 21. The middle shell 60 is provided with a connecting hole 61 connected to the second channel 134. The connecting hole 61 connects the second channel 134 and the end hole 121. In this way, the airflow of the hollow channel 21 can flow to the end hole 121 via the second channel 134 and the connecting hole 61 to achieve airflow conduction between the hollow channel 21 and the end hole 121.

[0116] The middle shell 60 includes a middle shell bottom wall 62 arranged opposite to the electroacoustic transducer 20, the communication hole 61 is arranged on the middle shell bottom wall 62, and the middle shell bottom wall 62 is formed with a second annular convex portion 621 surrounding the communication hole 61 and protruding toward the hollow channel 21, and the second annular convex portion 621 defines a second channel 134 communicating with the hollow channel 21. The second annular convex portion 621 can be sealed and connected with the hollow channel 21 by materials such as double-sided tape, glue or sealing ring, so that the airflow between the hollow channel 21 and the end hole 121 can be conducted through the second channel 134.

[0117] It can be understood that the air flow between the hollow channel 21 and the end hole 121 is achieved through the second channel 134, so the channel path between the end hole 121 and the hollow channel 21 is as short as possible, that is, the length of the second channel 134 is as short as possible, so as to improve the permeability of the earphone 100.

[0118] It can also be understood that the length of the second channel 134 can be understood as the height of the second annular protrusion 621 in the direction toward the hollow channel 21, that is, in the direction of the second annular protrusion 621 toward the hollow channel 21, the smaller the height of the second annular protrusion 621, the better. Exemplarily, in the direction of the second annular protrusion 621 toward the hollow channel 21, the value range of the height of the second annular protrusion 621 is between 0 mm and 10 mm, that is, the height of the second annular protrusion 621 is greater than or equal to 0 mm and less than or equal to 10 mm. For example, the height of the second annular protrusion 621 can be 0 mm, 2 mm, 4 mm, 6 mm, 8 mm, 10 mm, etc. It can be understood that when the height of the second annular protrusion 621 is 0 mm, the bottom wall 62 of the middle shell provided with the connecting hole 61 is in contact with the electroacoustic transducer 20.

[0119] Among them, the second channel 134 plays a role in conducting airflow. Therefore, in order to effectively improve the permeability of the earphone 100, the minimum cross-sectional area of ​​the second channel 134 is greater than or equal to the maximum cross-sectional area of ​​the hollow channel 21 to improve the conductivity of the airflow.

[0120] Exemplarily, the minimum cross-sectional area of ​​the second channel 134 is greater than or equal to 5 square millimeters. Further preferably, the minimum cross-sectional area of ​​the second channel 134 is greater than or equal to 10 square millimeters. Even more preferably, the minimum cross-sectional area of ​​the second channel 134 is greater than or equal to 20 square millimeters.

[0121] In order to realize the tuning function, a rear sound outlet may be provided on the earphone 100, such as, for example, Fig.11The shell 10 has a second rear sound hole 17, which is located on the side of the shell 10 away from the ear 200. When the middle shell 60 is covered on the electroacoustic transducer 20, the middle shell 60 divides the first cavity 13 into a second cavity 132 and a third cavity 133, and the second rear sound hole 17 is connected to the third cavity 133. The middle shell 60 is provided with a first sound connecting hole 63, which connects the second cavity 132 and the third cavity 133. In this way, the second cavity 132, the first sound connecting hole 63, the third cavity 133 and the second rear sound hole 17 can be connected, so that the earphone 100 can be tuned through the second rear sound hole 17.

[0122] It can be understood that the middle shell bottom wall 62 is arranged relative to the outer wall 12 of the shell body 10, wherein, in order to make the distance between the middle shell bottom wall 62 and the outer wall 12 as short as possible, the middle shell bottom wall 62 can be fitted with the outer wall 12, so that the end hole 121 can be better connected with the connecting hole 61 of the middle shell bottom wall 62.

[0123] In some embodiments, the middle shell 60 and the shell 10 are provided separately. It should be noted that the middle shell 60 and the shell 10 can be integrally formed, for example, both can be plastic parts, integrally formed by injection molding or secondary injection molding. In this way, the connection stability of the middle shell 60 and the shell 10 can be improved, thereby improving the structural stability of the earphone 100.

[0124] The middle shell 60 and the shell 10 can be split structures and connected to each other. For example, the two can be connected by snapping, that is, a snap-on protrusion can be provided on the middle shell 60, and a snap-on hole can be provided on the shell 10, and the snap-on protrusion is snapped in the snap-on hole to achieve the connection between the middle shell 60 and the shell 10. For another example, the middle shell 60 and the shell 10 can also be connected by fasteners. The present application is not limited to the connection method between the middle shell 60 and the shell 10. In this way, the connection flexibility of the middle shell 60 and the shell 10 can be improved, which is convenient for structural setting and assembly, thereby improving the structural flexibility of the earphone.

[0125] In some embodiments, see Fig.10 , the middle shell bottom wall 62 of the middle shell 60 and the outer side wall 12 of the shell 10 can fit each other. In other embodiments, the middle shell 60 may not be provided with the middle shell bottom wall 62, and the side wall of the middle shell 60 may be directly connected to the outer side wall 12 of the shell 10, so that the second cavity 132 can also be formed, and since the middle shell bottom wall 62 is removed, it can help reduce the axial thickness of the earphone 100, which helps the earphone 100 to be thin and light.

[0126] In another embodiment, see Fig.12 , Fig.12The sixth cross-sectional structural diagram of the earphone provided in the embodiment of the present application when worn on the ear. The middle shell 60 is covered on the electroacoustic transducer 20 to form the second cavity 132. In order to achieve the tuning function, a third rear sound hole 18 can be provided on the outer wall 12 of the shell 10, and a second sound outlet connecting hole 622 connected to the second cavity 132 is provided on the bottom wall 62 of the middle shell. The third rear sound hole 18 is connected to the second sound outlet connecting hole 622. In this way, the third rear sound hole 18 is connected to the second cavity 132 through the second sound outlet connecting hole 622, so that the earphone 100 can be tuned through the third rear sound hole 18.

[0127] The earphones provided in the embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technicians in this field, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A headset, characterized in that: The invention comprises a shell, an electroacoustic transducer and an opening and closing assembly, wherein the electroacoustic transducer is arranged in the shell, and the electroacoustic transducer is provided with a hollow passage penetrating along its own axis; the shell has a first sound outlet hole, the first sound outlet hole is located on the side of the shell facing the ear, the hollow passage is connected with the first sound outlet hole, the shell also comprises an outer side wall arranged opposite to the electroacoustic transducer, the outer side wall is provided with an end hole, and the end hole connects the hollow passage with the external environment; The opening and closing component is used to open or close the connection between the first sound outlet and the external environment.

2. The earphone according to claim 1, characterized in that The shell is formed with a first cavity, the first cavity is located between the electroacoustic transducer and the end hole, and the end hole is connected with the hollow channel through the first cavity.

3. The earphone according to claim 2, characterized in that The opening and closing assembly is disposed in the first cavity of the shell and is located at the connection between the end surface hole and the hollow channel, and is used to open or close the connection between the end surface hole and the hollow channel.

4. The earphone according to claim 2, characterized in that A distance between the end surface hole and a first surface of the electroacoustic transducer facing the end surface hole in the axial direction of the electroacoustic transducer is greater than or equal to 0.5 mm and less than or equal to 10 mm.

5. The earphone according to claim 2, characterized in that: The orthographic projection of the hollow channel on the outer side wall at least partially overlaps with the end hole; Alternatively, the orthographic projection of the hollow channel on the outer side wall does not overlap with the end surface hole at all.

6. The earphone according to claim 5, characterized in that A distance between a central axis of the end surface hole and a central axis of the hollow channel in a radial direction of the electroacoustic transducer is greater than or equal to 0 mm and less than or equal to 36 mm.

7. The earphone according to claim 2, characterized in that: A first channel is also formed in the first cavity, and the first channel communicates with the end hole and the hollow channel.

8. The earphone according to claim 7, characterized in that: The outer side wall is formed with a first annular protrusion surrounding the end hole and protruding toward the hollow passage, wherein the first annular protrusion defines the first passage.

9. The earphone according to claim 8, characterized in that In the direction from the first annular protrusion toward the hollow channel, the height of the first annular protrusion is greater than or equal to 0 mm and less than or equal to 10 mm.

10. The earphone according to claim 7, characterized in that The minimum cross-sectional area of ​​the first channel is greater than or equal to the maximum cross-sectional area of ​​the hollow channel.

11. The earphone according to claim 2, characterized in that: The shell has a first rear sound hole, the first rear sound hole is located at a side of the shell away from the ear, and the first rear sound hole is connected to the first cavity.

12. The earphone according to claim 2, characterized in that The earphone also includes a middle shell, which is covered by the electroacoustic transducer. A second cavity is defined between the middle shell and the electroacoustic transducer. The second cavity is connected to the hollow channel. The middle shell is provided with a connecting hole, which connects the second cavity and the end hole.

13. The earphone according to claim 2, characterized in that The earphone also includes a middle shell, which is covered on the electroacoustic transducer to define a second cavity and a second channel that are not connected to each other, the second channel is connected to the hollow channel, and the middle shell is provided with a connecting hole connected to the second channel, and the connecting hole connects the second channel and the end hole.

14. The earphone according to claim 13, characterized in that The middle shell includes a middle shell bottom wall arranged opposite to the electroacoustic transducer, the communicating hole is arranged on the middle shell bottom wall, the middle shell bottom wall is formed with a second annular protrusion surrounding the communicating hole and protruding toward the hollow channel, and the second annular protrusion defines the second channel connected to the hollow channel.

15. The earphone according to claim 14, characterized in that In the direction from the second annular protrusion toward the hollow channel, the height of the second annular protrusion is greater than or equal to 0 mm and less than or equal to 10 mm.

16. The earphone according to claim 14, characterized in that The minimum cross-sectional area of ​​the second channel is greater than or equal to the maximum cross-sectional area of ​​the hollow channel.

17. The earphone according to claim 14, characterized in that The middle shell divides the first cavity into the second cavity and the third cavity. The shell is also provided with a second rear sound hole connected to the third cavity, and the second rear sound hole is located on the side of the shell away from the ear. The middle shell is provided with a first sound connecting hole, and the first sound connecting hole connects the second cavity and the third cavity.

18. The earphone according to claim 14, characterized in that The bottom wall of the middle shell is in contact with the outer side wall.

19. The earphone according to claim 18, characterized in that The middle shell divides the first cavity into the second cavity and the third cavity, the bottom wall of the middle shell is provided with a second sound outlet hole connected to the second cavity, the outer side wall is provided with a third rear sound outlet hole, and the third rear sound outlet hole is connected to the second sound outlet hole.

20. The earphone according to any one of claims 1-19, characterized in that: The minimum cross-sectional area of ​​the first sound outlet hole is greater than or equal to 15 square millimeters.

21. The earphone according to any one of claims 1-19, characterized in that: The orthographic projection of the first sound outlet hole on a first reference plane at least partially overlaps with the orthographic projection of the hollow channel on the first reference plane, wherein the first reference plane is perpendicular to the central axis of the electroacoustic transducer.

22. The headset according to claim 21, characterized in that An area of ​​an orthographic projection of the first sound outlet hole on the first reference plane is larger than an area of ​​an orthographic projection of the hollow channel on the first reference plane.

23. The headset according to claim 22, characterized in that The electroacoustic transducer includes a diaphragm in a ring structure, the diaphragm surrounds the hollow channel, and the orthographic projection of the first sound outlet on the first reference plane at least partially overlaps with the orthographic projection of the diaphragm on the first reference plane.

24. The headset according to claim 23, characterized in that The earphone further includes a protective member having a mesh structure, and the protective member is arranged at the first sound outlet.

25. The earphone according to any one of claims 1-19, characterized in that: The minimum cross-sectional area of ​​the hollow channel is greater than or equal to 5 square millimeters.

26. The earphone according to any one of claims 1-19, characterized in that: The minimum cross-sectional area of ​​the end surface hole is greater than or equal to 15 square millimeters.

27. The earphone according to any one of claims 1-19, characterized in that: A second reference plane is established with the three areas of the tragus, anti-tragus and anti-helix of the ear, and the projection of the first sound outlet and / or the end hole on the second reference plane along the coronal axis is located or covers the area formed by the projection of the cymba concha, anti-helix, anti-tragus and tragus of the ear on the second reference plane along the coronal axis.

28. The headset according to claim 27, characterized in that There is a first minimum distance between the projection of the hollow channel on the second reference plane along the coronal axis and the projection of the ear hole of the ear on the second reference plane along the coronal axis. There is a second minimum distance between the projection of the end hole on the second reference plane along the coronal axis and the projection of the ear hole on the second reference plane along the coronal axis, and the first minimum distance is less than or equal to the second minimum distance.

29. The headset according to claim 1, characterized in that The opening and closing assembly is disposed on the housing and located at the hollow passage of the electroacoustic transducer, and is used to open or close the hollow passage; Alternatively, the opening and closing component is disposed on the housing and located at one side of the first sound outlet hole, and is used to open or close the first sound outlet hole; Alternatively, the opening and closing assembly is disposed on the shell and located on one side of the end hole, and is used to open or close the end hole.

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