Earphone

Abstract

The utility model discloses an earphone, and the earphone comprises a housing assembly which comprises a first housing and a second housing, and the second housing and the first housing are connected and cooperate with each other to form a first accommodation cavity and a second accommodation cavity; the air conduction loudspeaker is arranged in the first accommodating cavity; and the bone conduction loudspeaker is arranged in the second accommodating cavity. Wherein the second shell is arranged to be in contact with the face of a user in a wearing state, and a joint seam between the first shell and the second shell is not in contact with the face of the user. By means of the mode, the joint seam of the shell assembly is controlled not to make contact with the face of a user, and the risk that the joint seam of the shell assembly clamps the face of the user can be reduced; in addition, the risk that sweat on the face of the user enters the shell assembly through the joint seam can be further reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a headset. Background Art

[0002] With the increasing popularity of electronic devices, electronic devices have become an indispensable social and entertainment tool in people's daily lives, and people's requirements for electronic devices are getting higher and higher. Electronic devices such as headphones and smart glasses have also been widely used in people's daily lives. They can be used in conjunction with terminal devices such as mobile phones and computers to provide users with an auditory feast.

[0003] However, current earphone shells generally use an assembled structure, which may result in a seam in the area where the earphone fits the user's face. In addition, during daily use, the seam of the shell may pinch the user's face, and the sweat on the user's face may enter the earphone through the seam, affecting the electronic components inside the earphone. Utility Model Content

[0004] To this end, the present application provides an earphone that can improve the problem in the prior art that during use of the earphone, the joint seam of the shell may pinch the user's face and sweat may enter the interior of the earphone through the joint seam.

[0005] The present application provides an earphone, which includes: a shell assembly, including a first shell and a second shell, wherein the second shell is joined to the first shell and cooperates with each other to form a first accommodating cavity and a second accommodating cavity; an air conduction speaker, arranged in the first accommodating cavity; and a bone conduction speaker, arranged in the second accommodating cavity; wherein the second shell is configured to contact the user's face in a worn state, and the joint between the first shell and the second shell does not contact the user's face.

[0006] By controlling the joint seam of the shell assembly to prevent it from contacting the user's face in the above manner, the risk of the joint seam of the shell assembly pinching the user's face can be reduced. In addition, the risk of sweat on the user's face entering the shell assembly through the joint seam can be further reduced.

[0007] In some embodiments, the first shell includes a first sub-accommodating chamber and a second sub-accommodating chamber, the first sub-accommodating chamber is at least a part of the first accommodating chamber, and the second sub-accommodating chamber is at least a part of the second accommodating chamber; the first sub-accommodating chamber includes a first opening, and the second sub-accommodating chamber includes a second opening, and the axial direction of the first opening is at an angle to the axial direction of the second opening.

[0008] In some embodiments, the second shell includes a main body and an extension portion, and the main body and the extension portion are an integral structure; the main body covers the first opening and cooperates with the first shell to form a first accommodating cavity, and the extension portion covers the second opening and cooperates with the first shell to form a second accommodating cavity.

[0009] In some embodiments, at least a portion of the air conduction speaker is disposed in the first sub-accommodating chamber via the first opening, and at least a portion of the bone conduction speaker is disposed in the second sub-accommodating chamber via the second opening. The axial direction of the air conduction speaker is the same as the axial direction of the first opening, and the axial direction of the bone conduction speaker is the same as the axial direction of the second opening.

[0010] In some embodiments, the axial direction of the first opening is perpendicular to the axial direction of the second opening.

[0011] In some embodiments, the outer contour of the main body is a truncated cone, and the cross-section of the extension portion in a plane perpendicular to the extension direction of the extension portion is C-shaped; and / or the projection of the second shell is L-shaped in a direction perpendicular to both the vibration direction of the air conduction speaker and the vibration direction of the bone conduction speaker.

[0012] In some embodiments, the first shell includes a main shell and a first annular flange, the main shell includes a bottom wall portion and an annular side wall portion connected to each other, the first annular flange is protruded from the outside of the annular side wall portion, the bottom wall portion and the annular side wall portion enclose at least a portion of the second accommodating cavity, and the first annular flange and part of the annular side wall portion form at least a portion of the first accommodating cavity.

[0013] In some embodiments, a first step portion is formed on the inner side surface of the first annular flange, and the first step portion is used to support the air conduction lower end surface of the air conduction speaker facing the annular side wall portion. The annular side wall portion is formed with a first groove, and the first accommodating cavity includes the first groove.

[0014] In some embodiments, a second step portion is formed on the inner side surface of the annular side wall portion, and the second step portion is used to support the bone conduction lower end surface of the bone conduction speaker facing the bottom wall portion. The bottom wall portion is formed with a second groove, and the second accommodating cavity includes the second groove.

[0015] In some embodiments, the first annular flange includes an annular wall and a semi-enclosed portion, the annular wall is used to form a first accommodating cavity; along the vibration direction of the bone conduction speaker, the semi-enclosed portion is enclosed on the outer side of the annular wall close to the bottom wall portion; a portion of the outer side surface of the annular wall close to the semi-enclosed portion is used to engage with the second shell, and the end surface of the semi-enclosed portion facing the second shell is used to engage with the second shell.

[0016] In some embodiments, the annular side wall portion includes a first side wall portion and a second side wall portion connected to each other, and the first annular flange is protruded from the outside of the first side wall portion; the end surface of the annular side wall portion is smoothly connected to the end surface of the semi-enclosed portion to form a first annular curved surface, and the end surface of the annular side wall portion is used to engage with the second shell.

[0017] In some embodiments, along the depth direction of the first accommodating cavity and in the direction toward the second accommodating cavity, the end surface of the semi-enclosed portion gradually moves away from the end surface of the annular wall.

[0018] In some embodiments, the first shell and the second shell are fixed by a limiting structure.

[0019] In some embodiments, a first limiting block is convexly provided on the end surface of the annular wall on a side away from the second accommodating cavity, and the second shell is provided with a corresponding first limiting groove, and the first limiting block is clamped in the first limiting groove.

[0020] In some embodiments, the first housing includes a support block for supporting the second housing.

[0021] In some embodiments, along the vibration direction of the bone conduction speaker, on a side close to the second accommodating cavity, a support block is provided on the outer surface of the annular wall, and the support block is used to support the second shell.

[0022] In some embodiments, there are multiple support blocks, which are arranged at intervals; and / or the height of the support block on the outer surface of the annular wall gradually increases as it gradually approaches the second accommodating cavity; and / or a third groove is provided on the inner surface of the second shell, and the third groove is used to cooperate with the support block.

[0023] In some embodiments, along the vibration direction of the bone conduction speaker, on the side close to the second accommodating cavity, a protrusion is provided on the outer surface of the annular wall; the protrusion extends along the circumference of the annular wall, and a fourth groove is provided on the inner surface of the second shell, and the protrusion cooperates with the fourth groove.

[0024] In some embodiments, the protrusion is connected to the fourth groove by an adhesive.

[0025] In some embodiments, at least on the side away from the semi-enclosed portion, the end surface of the annular wall is connected to the outer side surface of the annular wall by a chamfered surface.

[0026] In some embodiments, on a side away from the first accommodating cavity, a second limiting block is convexly provided on the end surface of the annular side wall portion, and the second shell is provided with a corresponding second limiting groove, and the second limiting block is clamped in the second limiting groove.

[0027] In some embodiments, an ear hook connection portion is provided on the first shell; in the vibration direction of the air conduction speaker, the bone conduction speaker is closer to the ear hook connection portion than the air conduction speaker.

[0028] In some embodiments, the second shell has a planar contact area that contacts the user's face when in use, and in the normal direction of the planar contact area, the height difference between the planar contact area and the joint seam is greater than 0.5 mm.

[0029] In some embodiments, the bone conduction speaker has an upper end surface and a bone conduction lower end surface that are relatively arranged in its vibration direction; the central axis of the air conduction speaker is located between the upper end surface and the bone conduction lower end surface, and the ratio of the distance between the central axis and the upper end surface to the distance between the upper end surface and the bone conduction lower end surface is 40%-70%. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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.

[0031] Figure 1 is a schematic diagram of the overall structure of an earphone embodiment of the present application;

[0032] Figure 2 is a schematic structural diagram of a core assembly of an earphone embodiment of the present application;

[0033] Figure 3 is a schematic diagram of the exploded structure of the core assembly of the headset embodiment of the present application;

[0034] Figure 4 is a schematic diagram of the front profile of the ear of the user described in the present application;

[0035] Figure 5 is a schematic cross-sectional structure diagram of a core assembly of an earphone embodiment of the present application along the AA section line;

[0036] Figure 6 is a structural schematic diagram of a first shell of a core assembly of an earphone embodiment of the present application;

[0037] Figure 7 is a structural schematic diagram of a second shell of a core assembly of an earphone embodiment of the present application;

[0038] Figure 8 is another structural schematic diagram of the second shell of the core assembly of the earphone embodiment of the present application;

[0039] Fig. 9 It is a structural schematic diagram of a microphone assembly of an earphone embodiment of the present application being arranged in a first shell. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the technical solution of the present application, the earphones provided by the present application are further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It can be understood that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0041] The terms "first", "second", etc. in this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0042] The inventor of the present application has found that the shell assemblies of many movement assemblies are usually assembled from at least two shells. The position of the joint seam formed during the assembly of the shell makes it easy for it to contact the user's face during wearing. In this case, the joint seam may pinch the user's face, reducing the user's wearing experience. In addition, due to the existence of the joint seam, the user's sweat during use may enter the interior of the shell assembly through the joint seam, and further may have a negative impact on the electronic components (such as circuit boards, speakers or microphones, etc.) inside the shell assembly.

[0043] In order to solve the above problems, some embodiments of the present application provide an earphone 100a, which includes a core component 1, an ear hook component 2 and a rear hook component 3.

[0044] See also Figure 1 , Figure 2 and Figure 3, the number of the movement components 1 can be two. The two movement components 1 are used to transmit vibration and / or sound to the left ear and the right ear of the user respectively. The movement component 1 may include a housing component 10, a bone conduction speaker 11 and an air conduction speaker 12. The bone conduction speaker 11 and the air conduction speaker 12 may be arranged in the housing component 10. The air conduction speaker 12 conducts the sound to the ear canal of the user through the principle of air vibration, and the bone conduction speaker 11 conducts the sound to the user through bone conduction vibration. The two movement components 1 may be the same or different. For example, one movement component 1 may be provided with a microphone, while the other movement component 1 may not be provided with a microphone. For another example, one movement component 1 may be provided with a button and a corresponding circuit board, while the other movement component 1 may not be provided with the button and the corresponding circuit board. The two movement components 1 may be the same in the movement module (such as a speaker module). The movement component 1 described later in this article can be considered to be described in detail by taking one of the two movement components 1 as an example.

[0045] The number of ear hook components 2 can be two, and the two ear hook components 2 can be hung on the left ear and the right ear of the user respectively, so that the core component 1 can fit the face of the user. The two ear hook components 2 can include ear hooks 20 hung on the ears of the user. One end of the ear hook component 2 is connected to the core component 1, and the other end of the ear hook component 2 is connected to the back hanging component 3. The two ear hook components 2 can be the same or not completely the same. For example, one of the ear hook components 2 can be provided with a battery, and the other ear hook component 2 can be provided with a circuit board and an antenna component, etc. The circuit board can be electrically connected to at least one of the battery, the bone conduction speaker 11, the air conduction speaker 12, the microphone, and the antenna component.

[0046] The rear hanging component 3 connects the two ear hanging components 2. The rear hanging component 3 is used to wrap around the back of the user's neck or the back of the head, and can provide a clamping force, so that the two core components 1 are clamped on both sides of the user's face and the ear hanging components 2 are more firmly hung on the user's ears. Of course, the earphone 100a may also not include the rear hanging component 3, and the core component 1 is worn on the user's ears through the ear hanging components 2.

[0047] Combination Figure 4 , the user's ear 500 may include an external auditory canal 501, a cavum concha 502, a cymba concha 503, a triangular fossa 504, an antihelix 505, a scaphoid 506, an auricle 507, an antitragus 508, and a crus helix 509. Among them, although the external auditory canal 501 has a certain depth and extends to the eardrum of the ear 500, for the convenience of description, and in combination with Figure 4In the present application, unless otherwise specified, the external auditory canal 501 specifically refers to its entrance away from the tympanic membrane (i.e., the ear hole). Furthermore, the concha cavity 502, the hymena conchae 503, the triangular fossa 504 and other physiological parts have a certain volume and depth; and the concha cavity 502 is directly connected to the external auditory canal 501, which can be simply regarded as the aforementioned ear hole being located at the bottom of the concha cavity 502.

[0048] In some embodiments, the earphone 100a can be worn and stabilized by using one or more parts of the ear 500. In some embodiments, the external auditory canal 501, the cavum concha 502, the cymba concha 503, the triangular fossa 504 and other parts have a certain depth and volume in three-dimensional space, which can be used to meet the wearing requirements of the earphone.

[0049] Typically, the core assembly 1 is located at the front side of the ear 500 when worn, and the ear hook assembly 2 is located at the back side of the ear 500 when worn, so that the earphone 100a is hung on the ear 500 when worn. The core assembly 1 may have a connection end connected to the ear hook assembly 2 and a free end not connected to the ear hook assembly 2. In some embodiments, the core assembly 1 may be configured not to block the external auditory canal 501 when worn, so that the earphone 100a acts as an "open earphone". Due to individual differences among different users, when the earphone 100a is worn by different users, the core assembly 1 may partially block the external auditory canal 501, but the external auditory canal 501 is still not blocked.

[0050] In some embodiments, an open-type earphone (for example, earphone 100a) can be worn with the help of the cymba concha 503, the triangular fossa 504, the antihelix 505, the scaphoid 506, the helix 507 and other parts or a combination thereof. In some embodiments, in order to improve the comfort and reliability of the earphone in wearing, it is also possible to further use the earlobe and other parts of the user. By using other parts of the ear 500 other than the external auditory canal 501 to achieve the wearing of the earphone and the transmission of sound, the external auditory canal 501 of the user can be "liberated" and the impact of the earphone on the health of the user's ears can be reduced. When the user wears the earphone on the road, the earphone will not block the external auditory canal 501 of the user, and the user can receive both the sound from the earphone and the sound from the environment (for example, horns, car bells, surrounding human voices, traffic control sounds, etc.), thereby reducing the probability of traffic accidents. For example, when the user wears the earphone, the entire or partial structure of the earphone can be located on the front side of the helix foot 509 (for example, Figure 4 The area enclosed by the dashed line J).

[0051] In addition, different users may have individual differences, resulting in different shapes, sizes and other dimensional differences in the ears. In order to facilitate description, and to reduce (or even eliminate) individual differences between different users, a simulator containing a head and its (left and right) ears can be made based on ANSI: S3.36, S3.25 and IEC: 60318-7 standards, such as GRAS45BC40KEMAR. Therefore, in this application, descriptions such as "the user wears headphones", "the headphones are in a wearing state" and "in a wearing state" may refer to the headphones described in this application being worn on the ears of the aforementioned simulator. Of course, precisely because different users have individual differences, there may be certain differences between the headphones worn by different users and the headphones worn on the ears of the aforementioned simulator, but such differences should be tolerated.

[0052] See also Figure 3 The housing assembly 10 may include a first housing 101 and a second housing 102. The second housing 102 may be joined with the first housing 101, and cooperate with each other to form a first accommodating chamber 103 and a second accommodating chamber 104. The first accommodating chamber 103 and the second accommodating chamber 104 are arranged at intervals. The air conduction speaker 12 is arranged in the first accommodating chamber 103, and the bone conduction speaker 11 is arranged in the second accommodating chamber 104. The second housing 102 is arranged to contact the user's face in the wearing state, and the joint seam between the first housing 101 and the second housing 102 does not contact the user's face.

[0053] That is to say, the shell assembly 10 (especially the second shell 102) may have a contact area 1023 that fits the user's face when the earphone 100a is worn. The contact area 1023 may be a planar structure, a curved structure, or a combination of the two. The joint between the second shell 102 and the first shell 101 may be located outside the contact area 1023. In the above manner, the joint of the shell assembly 10 is controlled not to contact the user's face, which can reduce the risk of the joint of the shell assembly 10 clamping the user's face and improve the user's comfort. In addition, it can also further reduce the risk of sweat on the user's face entering the interior of the shell assembly 10 through the joint. It should be noted that the contact area 1023 may be the portion that contacts the facial area (J area) adjacent to the external auditory canal 501 of the simulator when the earphone 100a is worn on the aforementioned simulator.

[0054] See also Figure 3 , Figure 5 and Figure 6In some embodiments, the first housing 101 includes a first sub-accommodating chamber 1015 and a second sub-accommodating chamber 1016, wherein the first sub-accommodating chamber 1015 is at least part of the first accommodating chamber 103, and the second sub-accommodating chamber 1016 is at least part of the second accommodating chamber 104. It can be understood that the first accommodating chamber 103 and the second accommodating chamber 104 are both defined by the first housing 101 and the second housing 102, wherein the portion of the first accommodating chamber 103 located in the first housing 101 is the first sub-accommodating chamber 1015, and the portion of the second accommodating chamber 104 located in the first housing 101 is the second sub-accommodating chamber 1016. The main body of the second accommodating chamber 104 is defined by the first housing 101.

[0055] The first sub-accommodating chamber 1015 includes a first opening 1017, and the second sub-accommodating chamber 1016 includes a second opening 1018. The axial direction of the first opening 1017 forms an angle with the axial direction of the second opening 1018. The axial direction of the first opening 1017 is the direction of the line between the center of the first opening 1017 and the center of the bottom wall of the first sub-accommodating chamber 1015, and the axial direction of the second opening 1018 is the direction of the line between the center of the second opening 1018 and the center of the bottom wall of the second sub-accommodating chamber 1016. It can be understood that the first shell 101 is provided with the first opening 1017 and the second opening 1018, and the first opening 1017 and the second opening 1018 are oriented in different directions.

[0056] See also Figure 3 In some embodiments, the second shell 102 includes a main body 1021 and an extension 1022. The extension 1022 is used to contact the user's face. That is, the contact area 1023 is provided on the extension 1022. The main body 1021 covers the first opening 1017 and cooperates with the first shell 101 to form the first accommodating cavity 103, and the extension 1022 covers the second opening 1018 and cooperates with the first shell 101 to form the second accommodating cavity 104. The extension 1022 is connected to the main body 1021, for example, it can be extended from the side of the main body 1021 close to the second accommodating cavity 104 along the axial direction parallel to the first opening 1017. Among them, the main body 1021 and the extension 1022 are an integral structure. The main body 1021 and the extension 1022 can be made of the same material, for example, the main body 1021 and the extension 1022 can be integrally formed by injection molding using the same plastic. The main body 1021 and the extension 1022 can be further joined with the first shell 101 to form the above-mentioned joint seam between the first shell 101 and the second shell 102. Compared with the earphones composed of three or more shells, the embodiment of the present application can reduce the number of exposed joint seams and the workload of glue dispensing by only matching the first shell 101 and the second shell 102, and can also improve the overall sealing of the shell assembly 10, so that the structure of the movement assembly 1 is more compact and more reliable.

[0057] In some embodiments, at least part of the air conduction speaker 12 is disposed in the first sub-accommodating chamber 1015 through the first opening 1017, and at least part of the bone conduction speaker 11 is disposed in the second sub-accommodating chamber 1016 through the second opening 1018. The axial direction of the air conduction speaker 12 is the same as the axial direction of the first opening 1017, and the axial direction of the bone conduction speaker 11 is the same as the axial direction of the second opening 1018. The axial direction of the first opening 1017 and the axial direction of the second opening 1018 are at an angle, which can facilitate the installation of the air conduction speaker 12 and the bone conduction speaker 11. Since the axial direction of the air conduction speaker 12 is the same as the axial direction of the first opening 1017, and the axial direction of the bone conduction speaker 11 is the same as the axial direction of the second opening 1018, the vibration direction of the air conduction speaker 12 installed in the first opening 1017 and the vibration direction of the bone conduction speaker 11 installed in the second opening 1018 are also at an angle, so that the vibration of the bone conduction speaker 11 can be prevented from affecting the vibration of the diaphragm of the air conduction speaker 12. At the same time, the opening manner of the first opening 1017 and the second opening 1018 can also achieve a better separation and sealing effect between the first accommodating cavity 103 and the second accommodating cavity 104 .

[0058] In some embodiments, the axis direction of the first opening 1017 is perpendicular to the axis direction of the second opening 1018. Accordingly, the vibration direction of the air conduction speaker 12 is perpendicular to the vibration direction of the bone conduction speaker 11, which can further reduce the influence of the bone conduction speaker 11 on the air conduction speaker 12.

[0059] In this way, since the joint seam between the first shell 101 and the second shell 102 is located outside the contact area 1023, the risk of the joint seam of the shell assembly 10 being clamped on the user's face can be reduced, and the risk of the user's facial sweat entering the shell assembly 10 through the joint seam can be further reduced. In addition, the shell assembly 10 includes the first shell 101 and the second shell 102, which can reduce the number of joint seams exposed in the shell assembly 10 that may contact the user's face, thereby improving the wearing comfort of the earphone 100a.

[0060] In a structure where the joint seam is attached to the user's face, the presence of the joint seam may have a negative effect on the bone conduction of sound, but in the present application, the second shell 102 can have a larger surface area, thereby increasing the effective area of ​​bone conduction when the bone conduction speaker 11 is working (i.e., the contact area between the second shell 102 and the user's face), thereby improving the effect of bone conduction. In addition, the shell portion of the bone conduction speaker 11 facing the user's face (i.e., the extension portion 1022 of the second shell 102) and the shell portion of the bone conduction speaker 11 facing away from the user's face (i.e., the portion of the first shell 101) are approximately equal in area, which can improve the sound leakage cancellation effect of the bone conduction speaker 11, thereby improving the sound leakage reduction effect.

[0061] See also Figure 3 , Figure 5 and Figure 7 In some embodiments, the outer contour of the main body 1021 is truncated cone-shaped. The cross-sectional area of ​​the main body 1021 at one end close to the extension 1022 is larger than the cross-sectional area of ​​the main body 1021 at one end away from the extension 1022. The cross section of the extension 1022 in a plane perpendicular to the extension direction of the extension 1022 is C-shaped. That is, the cross section of the extension 1022 in a plane parallel to the axis direction of the second opening 1018 is C-shaped. The extension 1022 extends from the side of the main body 1021 close to the second accommodating cavity 104 along the axis direction parallel to the first opening 1017, and the two sides of the extension 1022 parallel to the extension direction are bent and extended in the direction close to the second accommodating cavity 104, forming a shell with a certain curvature on the surface. The shape of the extension 1022 allows the joint seam between the first shell 101 and the second shell 102 to not contact the user's face, thereby reducing the risk of the joint seam pinching the user's face.

[0062] See also Figure 3 and Figure 8 In some embodiments, in a direction perpendicular to the vibration direction of the air conduction speaker 12 and the vibration direction of the bone conduction speaker 11, the projection of the second housing 102 is L-shaped. It can be understood that in a plane parallel to the axis direction of the first opening 1017 and the axis direction of the second opening 1018, the projection of the second housing 102 is L-shaped. That is, the second housing 102 is an L-shaped housing as a whole, and the second housing 102 half surrounds the first housing 101.

[0063] See also Figure 3 and Figure 5In some embodiments, the first housing 101 includes a main housing 1011 and a first annular flange 1012. The main housing 1011 includes a bottom wall portion 10111 and an annular side wall portion 10112 connected to each other. The first annular flange 1012 is protrudingly disposed on the outer side of the annular side wall portion 10112. The bottom wall portion 10111 and the annular side wall portion 10112 enclose at least part of the second accommodating chamber 104, and the first annular flange 1012 and part of the annular side wall portion 10112 form at least part of the first accommodating chamber 103. That is, the bottom wall portion 10111 and the annular side wall portion 10112 enclose a second sub-accommodating chamber 1016, and the first annular flange 1012 and part of the annular side wall portion 10112 enclose a first sub-accommodating chamber 1015. The bottom wall portion 10111 is disposed opposite to the second opening 1018, and the part of the annular side wall portion 10112 is disposed opposite to the first opening 1017. The first annular flange 1012 is disposed on one side of the annular side wall portion 10112 close to the first accommodating cavity 103 , and a portion of the annular side wall portion 10112 forms a bottom wall of the first accommodating cavity 103 .

[0064] In some embodiments, a first step portion 10121 is formed on the inner side surface of the first annular flange 1012, and the first step portion 10121 is used to support the air conduction lower end surface 121 of the air conduction speaker 12 facing the annular side wall portion 10112. It can be understood that the side of the air conduction speaker 12 facing the annular side wall portion 10112 is the air conduction lower end surface 121, and the air conduction lower end surface 121 of the air conduction speaker 12 abuts against the side of the first step portion 10121 facing the first opening 1017. The first accommodating cavity 103 includes a first groove 10113. When the air conduction speaker 12 is accommodated in the first accommodating cavity 103, the gap space between the air conduction lower end surface 121 of the air conduction speaker 12 and the annular side wall portion 10112 is the first groove 10113, and the first groove 10113 provides a vibration space for the diaphragm of the air conduction speaker 12.

[0065] In some embodiments, a second step portion 10114 is formed on the inner side of the annular side wall portion 10112, and the second step portion 10114 is used to support the bone conduction lower end surface 112 of the bone conduction speaker 11 facing the bottom wall portion 10111. It can be understood that the side of the bone conduction speaker 11 facing the bottom wall portion 10111 is the bone conduction lower end surface 112, and the bone conduction lower end surface 112 of the bone conduction speaker 11 abuts against the side of the second step portion 10114 facing the second opening 1018. The bottom wall portion 10111 is formed with a second groove 10115, and the second accommodating cavity 104 includes the second groove 10115. When the bone conduction speaker 11 is accommodated in the second accommodating cavity 104, the gap space between the bone conduction lower end surface 112 of the bone conduction speaker 11 and the bottom wall portion 10111 is the second groove 10115, and the second groove 10115 provides a vibration space for the vibration transmission plate of the bone conduction speaker 11.

[0066] See also Figure 5 and Figure 6 In some embodiments, the first annular flange 1012 includes an annular wall 10122 and a semi-enclosed portion 10123. The annular wall 10122 is used to form the first accommodating cavity 103. Along the vibration direction of the bone conduction speaker 11, the semi-enclosed portion 10123 is enclosed on the outer side of the annular wall 10122 close to the bottom wall portion 10111. A portion of the outer side surface of the annular wall 10122 close to the semi-enclosed portion 10123 is used to engage with the second shell 102, and the end surface of the semi-enclosed portion 10123 facing the second shell 102 is used to engage with the second shell 102. It can be understood that a portion of the outer side surface of the annular wall 10122 close to the semi-enclosed portion 10123 and the end surface of the semi-enclosed portion 10123 facing the second shell 102 are both engaged with the side of the main body 1021 facing the first accommodating cavity 103 and opposite to the extension portion 1022.

[0067] See also Figure 3 , Figure 5 and Figure 8 In some embodiments, the annular side wall portion 10112 includes a first side wall portion 10116 and a second side wall portion 10117 connected to each other. The first side wall portion 10116 is disposed close to the first accommodating cavity 103, and the second side wall portion 10117 is disposed away from the first accommodating cavity 103. The first annular flange 1012 is protrudingly disposed on the outer side of the first side wall portion 10116. It can be understood that the first side wall portion 10116 is a portion that separates the first accommodating cavity 103 and the second accommodating cavity 104. The end surface of the annular side wall portion 10112 is smoothly connected to the end surface of the semi-enclosed portion 10123 to form a first annular curved surface 1010, and the end surface of the annular side wall portion 10112 is used to engage with the second shell 102. The end surface of the main body 1021 facing the first accommodating cavity 103 and the end surface of the extension portion 1022 are smoothly connected to form a second annular surface 1026. The second annular surface 1026 and the first annular surface 1010 are attached to form a joint seam, so that the joint seam does not contact the user's face, reducing the risk of the joint seam pinching the user's face.

[0068] See also Figure 3 and Figure 6 In some embodiments, along the depth direction of the first accommodating cavity 103 and in the direction toward the second accommodating cavity 104, the end surface of the semi-enclosed portion 10123 gradually moves away from the end surface of the annular wall 10122. In other words, along the direction from the first opening 1017 to the first side wall portion 10116, the end surface of the semi-enclosed portion 10123 toward the second accommodating cavity 104 gradually moves away from the end surface of the annular wall 10122, and the end surface of the semi-enclosed portion 10123 forms an angle with the axial direction of the first opening 1017, so as to smoothly transition and connect with the end surface of the annular side wall portion 10112, thereby forming the first annular curved surface 1010.

[0069] In some embodiments, the first shell 101 and the second shell 102 are fixed by a limiting structure. The limiting structure may include a matching structure of a limiting block and a limiting groove, a matching structure of a latch, or a matching structure of magnetic attraction. The first shell 101 and the second shell 102 are mutually limited and fixed by the limiting structure, thereby improving the assembly stability between the first shell 101 and the second shell 102.

[0070] See also Figure 3 , Figure 6 and Figure 7 In some embodiments, on the side away from the second accommodating cavity 104, a first limiting block 1071 is convexly provided on the end surface of the annular wall 10122, and a corresponding first limiting groove 1072 is provided on the second housing 102. The first limiting block 1071 is clamped in the first limiting groove 1072. The first limiting block 1071 protrudes from the end surface of the annular wall 10122 on the side away from the second accommodating cavity 104 in a direction away from the first accommodating cavity 103, and the first limiting block 1071 extends along the circumferential direction of the annular wall 10122. The first limiting groove 1072 is correspondingly provided on the end surface of the main body 1021 on the side facing the first accommodating cavity 103 and opposite to the extension portion 1022. The first limiting block 1071 can extend a certain length in a straight line along the circumferential direction of the annular wall 10122, that is, the first limiting block 1071 can be a rectangular parallelepiped structure as a whole, and the first limiting groove 1072 has a corresponding complementary structure, thereby simplifying the design and production of the first limiting block 1071 and the first limiting groove 1072.

[0071] In some embodiments, the positions of the first limiting block 1071 and the first limiting groove 1072 can be swapped, for example, the first limiting block 1071 can be convexly disposed on the second housing 102, and the first limiting groove 1072 can be disposed on the end surface of the annular wall 10122. This application does not make any specific limitation thereto.

[0072] See also Figure 6 and Figure 8 In some embodiments, the first housing 101 includes a support block 1019, and the support block 1019 is used to support the second housing 102. The support block 1019 can be protruded from the outer side of the annular wall 10122.

[0073] In some embodiments, the number of the support blocks 1019 is multiple, and the multiple support blocks 1019 are arranged at intervals. Among them, the multiple support blocks 1019 can be arranged at intervals along the circumference of the annular wall 10122, and each support block 1019 is arranged parallel to the axial direction of the first opening 1017. For example, the number of the support blocks 1019 can be two or three, and the two or three support blocks 1019 are arranged at intervals on the outer side of the annular wall 10122 close to the second accommodating cavity 104. The annular wall 10122 includes two opposite plane walls and two opposite arc walls, and the plane walls and the arc walls are alternately connected in sequence to form the annular wall 10122. When the number of the support blocks 1019 is two, the two support blocks 1019 can be arranged on the plane wall close to the second accommodating cavity 104; when the number of the support blocks 1019 is three, two of the three support blocks 1019 can be arranged on the plane wall close to the second accommodating cavity 104, and the remaining one support block 1019 can be arranged on one of the arc walls. The number of the support blocks 1019 may also be 4, 5 or other numbers. The support blocks 1019 may all be arranged on a plane wall or all be arranged on an arcuate wall. The number and arrangement of the support blocks 1019 are not limited thereto.

[0074] In some embodiments, the height of the support block 1019 on the outer side of the annular wall 10122 gradually increases as it approaches the second accommodating cavity 104. In other words, the height of the support block 1019 away from the second accommodating cavity 104 is less than the height of the support block 1019 close to the second accommodating cavity 104.

[0075] In some embodiments, a third groove 1024 is provided on the inner surface of the second housing 102, and the third groove 1024 is used to cooperate with the support block 1019. The third groove 1024 is provided at the connection between the main body 1021 and the extension 1022. When the second housing 102 is engaged with the first housing 101, the support block 1019 is embedded in the third groove 1024. The cooperation between the support block 1019 and the third groove 1024 can further improve the stability of the first housing 101 and the second housing 102 when they are engaged.

[0076] In some embodiments, along the vibration direction of the bone conduction speaker 11, on the side close to the second accommodating cavity 104, a protrusion (not shown) is provided on the outer surface of the annular wall 10122, and the protrusion extends along the circumference of the annular wall 10122. A fourth groove (not shown) is provided on the inner surface of the second shell 102, and the protrusion cooperates with the fourth groove. It can be understood that in this embodiment, the support block 1019 is not provided on the annular wall 10122, and the third groove 1024 is not provided on the inner surface of the second shell 102. Among them, the protrusion is provided in a direction perpendicular to the support block 1019 described in the above embodiment, and the fourth groove is correspondingly provided at the connection between the main body 1021 and the extension part 1022. The cooperation between the protrusion and the fourth groove can further improve the stability of the first shell 101 and the second shell 102 when they are joined, and can also ensure better sealing between the first accommodating cavity 103 and the second accommodating cavity 104.

[0077] In some embodiments, the protrusion and the fourth groove may be connected by an adhesive. The protrusion and the fourth groove are connected by an adhesive, which can further improve the sealing of the housing assembly 10. In addition, the fourth groove can further increase the bonding area of ​​the adhesive, thereby improving the reliability of the assembly of the first housing 101 and the second housing 102.

[0078] See also Figure 3 and Figure 6 In some embodiments, at least on the side away from the semi-enclosed portion 10123, the end face of the annular wall 10122 is connected to the outer side of the annular wall 10122 by a chamfered surface. The end face of the annular wall 10122 is connected to the outer side of the annular wall 10122 by a chamfered surface, so that when the second shell 102 is engaged with the first shell 101, the support block 1019 can be more smoothly embedded in the third groove 1024, and it can also prevent the stress concentration on the second shell 102 caused by the end face of the annular wall 10122 and the outer side of the annular wall 10122 being directly connected at a right angle. In addition, an adhesive can be coated on the chamfered surface to bond the first shell 101 and the second shell 102.

[0079] See also Figure 6 and Figure 8 In some embodiments, on the side away from the first accommodating cavity 103, a second stopper 1081 is convexly provided on the end surface of the annular side wall portion 10112, and the second housing 102 is provided with a corresponding second stopper groove 1082, and the second stopper 1081 is clamped in the second stopper groove 1082. The second stopper 1081 is provided on the end surface of the second side wall portion 10117, and the second stopper groove 1082 is provided on the side of the extension portion 1022 away from the main body portion 1021. The second stopper 1081 and the second stopper groove 1082 cooperate with each other, so that the extension portion 1022 can better seal the second accommodating cavity 104, thereby improving the sealing performance of the housing assembly 10.

[0080] See also Figure 3 In some embodiments, an ear hook connection portion 106 is provided on the first housing 101, and in the vibration direction of the air conduction speaker 12, the bone conduction speaker 11 is closer to the ear hook connection portion 106 than the air conduction speaker 12. In this case, the shaking of the movement assembly 1 can be reduced, so that the bone conduction speaker 11 has a better wearing effect in scenes such as sports, thereby improving the sound quality. In some embodiments, the ear hook connection portion 106 extends from one end of the main housing 1011 in a direction away from the main housing 1011. In the projection direction parallel to the extension direction of the ear hook connection portion 106, the projection of the ear hook assembly 2 falls into the second accommodating cavity 104.

[0081] In some embodiments, the bone conduction speaker 11 needs to be electrically connected to the control circuit and the power supply through a wire. By arranging the bone conduction speaker 11 closer to the ear hook connection portion 106 than the air conduction speaker 12, the wire between the bone conduction speaker 11 and the control circuit and the power supply can be shortened, thereby reducing the problems of increased resistance and shaking of the movement assembly 1 caused by too long wires, and reducing electrical connection problems caused by wire breakage or poor contact, thereby improving electrical connection reliability.

[0082] In some embodiments, the air conduction speaker 12 also needs to be electrically connected to the control circuit and the power supply through a wire. The wire can be further passed through the first shell 101 and the second shell 102 to further enable the air conduction speaker 12 to be powered.

[0083] In some embodiments, the shell assembly 10 is also provided with a pressure relief hole for connecting the first accommodating chamber 103 with the external environment. On a reference plane perpendicular to the vibration direction of the bone conduction speaker 11, the bone conduction speaker 11 is a rounded rectangle. A rounded rectangle may refer to a figure formed by rounding the right angles of a rectangle. In some embodiments, the pressure relief hole and the ear hook connection portion 106 are respectively arranged at the rounded positions on both sides of the diagonal of the bone conduction speaker 11. In some embodiments, the center of the pressure relief hole and the center line of the wiring hole for routing the wires of the bone conduction speaker 11 are respectively arranged on the diagonal of the bone conduction speaker 11. In this case, the space at the rounded corner of the shell assembly 10 can be fully utilized to make the above-mentioned pressure relief hole and wiring hole, which is conducive to making the structure of the movement assembly 1 more compact.

[0084] See also Figure 3 and Figure 7In some embodiments, the second shell 102 has a plane contact area 1023a that contacts the user's face when in use, and in the normal direction of the plane contact area 1023a, the height difference between the plane contact area 1023a and the joint seam is greater than 0.5mm. In other words, the joint seam and the plane contact area 1023a are not in the same plane, so as to ensure that the joint seam position of the earphone 100a will not contact the user's face when the earphone 100a is worn, thereby avoiding the situation where the user's sweat during use may enter the interior of the shell assembly through the joint seam. Among them, the plane contact area 1023a can be the planar portion of the above-mentioned contact area 1023. In this case, the area of ​​the extension portion 1022 can be appropriately increased, which is conducive to reliably and firmly assembling the second shell 102 on the first shell 101, reducing the possibility of the second shell 102 falling off during use.

[0085] See also Figure 3 and Figure 5 In some embodiments, the bone conduction speaker 11 has an upper end surface 111 and a bone conduction lower end surface 112 that are relatively arranged in its vibration direction. The central axis of the air conduction speaker 12 is located between the upper end surface 111 and the bone conduction lower end surface 112, and the ratio of the distance between the central axis and the upper end surface 111 to the distance between the upper end surface 111 and the bone conduction lower end surface 112 is 40%-70%. Among them, the central axis of the air conduction speaker 12 can be parallel to its vibration direction. In other words, the air conduction speaker 12 can be arranged close to the center of the bone conduction speaker 11, which can further reduce the volume of the movement assembly 1 and make the structure of the movement assembly 1 more compact compared to the air conduction speaker 12 being arranged close to the upper end surface 111 or the bone conduction lower end surface 112 of the bone conduction speaker 11.

[0086] In some embodiments, the ratio of the distance between the central axis of the air conduction speaker 12 and the upper end surface 111 of the bone conduction speaker 11 to the distance between the upper end surface 111 of the bone conduction speaker 11 and the lower end surface 112 of the bone conduction speaker 11 is 40%, 45%, 50%, 55%, 60%, 65%, 70%, etc. When the ratio of the distance between the central axis of the air conduction speaker 12 and the upper end surface 111 of the bone conduction speaker 11 to the distance between the upper end surface 111 of the bone conduction speaker 11 and the lower end surface 112 of the bone conduction speaker 11 is 50%, the first accommodating cavity 103 and the vibration transmission plate of the bone conduction speaker 11 (the vibration transmission plate of the bone conduction speaker 11 is substantially perpendicular to the vibration direction of the bone conduction speaker 11) are distributed in a T-shape as a whole, so that the overall volume of the movement assembly 1 can be minimized and the structure can be most compact.

[0087] In some embodiments, the vibration direction of the bone conduction speaker 11 is perpendicular to the central axis of the air conduction speaker 12. In this case, the possibility of interference between the bone conduction speaker 11 and the air conduction speaker 12 during operation can be reduced.

[0088] As described above, the air conduction speaker 12 and the bone conduction speaker 11 are cross-arranged. Generally, the distance between the upper end surface 111 and the lower end surface 112 of the bone conduction speaker 11 may be greater than the radial dimension of the air conduction speaker 12 perpendicular to the central axis. Therefore, it is necessary to improve the structural shape of the shell assembly 10 to improve the space utilization inside the shell assembly 10.

[0089] In summary, the earphone 100a provided in some embodiments of the present application may include a housing assembly 10, a bone conduction speaker 11 and an air conduction speaker 12. The housing assembly 10 may include a first housing 101 and a second housing 102. The second housing 102 may be joined with the first housing 101, and cooperate with each other to form a first accommodating cavity 103 and a second accommodating cavity 104. The air conduction speaker 12 is disposed in the first accommodating cavity 103, and the bone conduction speaker 11 is disposed in the second accommodating cavity 104. The second housing 102 is configured to contact the user's face in a wearing state, and the joint seam between the first housing 101 and the second housing 102 does not contact the user's face.

[0090] By controlling the joint seam of the shell component 10 so as not to contact the user's face in the above manner, the risk of the joint seam of the shell component 10 pinching the user's face can be reduced. In addition, the risk of sweat on the user's face entering the shell component 10 through the joint seam can be further reduced.

[0091] Also, as mentioned above, see Fig. 9 The core assembly 1 may include a housing assembly 10 and a microphone assembly 13. The housing assembly 10 may have a second accommodating cavity 104. The microphone assembly 13 may be disposed in the second accommodating cavity 104.

[0092] In some embodiments, one or two sound inlet holes (not shown) are provided on the housing assembly 10. The microphone assembly 13 can be used to collect external sound input through the sound inlet hole. The sound inlet ends of the two sound inlet holes can be spaced apart from each other, and the sound outlet ends of the two sound inlet holes can be connected to each other. The sound inlet end of the sound inlet hole can refer to the end where the external sound enters the sound inlet hole. The sound outlet end of the sound inlet hole can refer to the end where the external sound flows out after passing through the sound inlet hole.

[0093] Among them, the microphone assembly 13 may include a support base 131 and a microphone 132. A sound guide channel 1311 may be provided on the support base 131. The sound input end of the sound guide channel 1311 is connected to the sound output end of the two sound input holes. The microphone 132 may be provided at the sound output end of the sound guide channel 1311. The sound input end of the sound guide channel 1311 may refer to an end where the external sound enters the sound guide channel 1311 after passing through the sound input hole. The sound output end of the sound guide channel 1311 may refer to an end where the external sound flows out through the sound input hole and the sound guide channel 1311.

[0094] In this case, the sound can enter the microphone assembly 13 in the second accommodating cavity 104 through the two sound inlet holes to improve the sound pickup effect of the microphone assembly 13. In addition, when there is a large airflow following the sound into the sound inlet holes during sound pickup, the airflow can enter the housing assembly 10 through one of the sound inlet holes and flow out through the other sound inlet hole, thereby reducing the wind noise during sound pickup.

[0095] In some embodiments, the sound guiding channel 1311 is arranged in a bent shape. In this case, the length of the sound guiding channel 1311 can be increased, the speed of the airflow can be slowed down, and the influence of wind noise can be reduced.

[0096] In some embodiments, the housing assembly 10 is provided with a supporting surface 1701 and abutting surface 1702. The bottom surface of the supporting seat 131 can be supported on the supporting surface 1701, and the side surface can be abutted on the abutting surface 1702.

[0097] In some embodiments, the connection between the abutting surface 1702 and the side surface may be provided with a first sealant 1303, a second sealant 1304, and a third sealant 1305. The first sealant 1303 may seal the gap between the side surface of the support seat 131 and the abutting surface 1702. The second sealant 1304 may at least seal the gap between the top surface of the support seat 131 and the abutting surface 1702. The third sealant 1305 may seal the gap between the ground of the support seat 131 and the support surface 1701. Thus, the possibility of water vapor entering the interior of the housing assembly 10 from the gap between the support seat 131 and the support surface 1701 and the abutting surface 1702 can be reduced.

[0098] That is to say, the first sealant 1303, the second sealant 1304, and the third sealant 1305 can isolate the interior of the shell assembly 10 from the sound inlet hole / sound guiding channel 1311 to reduce the possibility that water vapor in the sound inlet hole / sound guiding channel 1311 enters the interior of the shell assembly 10 and causes the electronic components inside the shell assembly 10 (such as the microphone 132) to get damp.

[0099] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device 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.

[0100] The above are merely embodiments of the present application and are not intended to 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 applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A headset, characterized in that: include: A housing assembly, comprising a first housing and a second housing, wherein the second housing is engaged with the first housing and cooperates with each other to form a first accommodating cavity and a second accommodating cavity; an air conduction speaker, disposed in the first accommodating cavity; and A bone conduction speaker, disposed in the second accommodating cavity; The second shell is configured to contact the user's face when worn, and the joint between the first shell and the second shell does not contact the user's face.

2. The earphone according to claim 1, characterized in that The first shell includes a first sub-accommodating chamber and a second sub-accommodating chamber, the first sub-accommodating chamber is at least a part of the first accommodating chamber, and the second sub-accommodating chamber is at least a part of the second accommodating chamber; the first sub-accommodating chamber includes a first opening, and the second sub-accommodating chamber includes a second opening, and the axial direction of the first opening forms an angle with the axial direction of the second opening.

3. The earphone according to claim 2, characterized in that The second shell includes a main body and an extension portion, wherein the main body and the extension portion are an integral structure; The main body covers the first opening and cooperates with the first shell to form the first accommodating cavity, and the extending portion covers the second opening and cooperates with the first shell to form the second accommodating cavity.

4. The earphone according to claim 2, characterized in that At least part of the air conduction speaker is arranged in the first sub-accommodating chamber through the first opening, and at least part of the bone conduction speaker is arranged in the second sub-accommodating chamber through the second opening. The axial direction of the air conduction speaker is the same as the axial direction of the first opening, and the axial direction of the bone conduction speaker is the same as the axial direction of the second opening.

5. The earphone according to claim 4, characterized in that: The axial direction of the first opening is perpendicular to the axial direction of the second opening.

6. The earphone according to claim 3, characterized in that: The outer contour of the main body is in the shape of a truncated cone, and the cross section of the extension portion in a plane perpendicular to the extension direction of the extension portion is in the shape of a C; and / or In a direction perpendicular to both the vibration direction of the air conduction speaker and the vibration direction of the bone conduction speaker, a projection of the second shell is in an L shape.

7. The earphone according to any one of claims 1 to 6, characterized in that: The first shell includes a main shell and a first annular flange, the main shell includes a bottom wall portion and an annular side wall portion connected to each other, the first annular flange is protruded from the outside of the annular side wall portion, the bottom wall portion and the annular side wall portion enclose at least part of the second accommodating cavity, and the first annular flange and part of the annular side wall portion form at least part of the first accommodating cavity.

8. The earphone according to claim 7, characterized in that: A first step portion is formed on the inner side surface of the first annular flange, and the first step portion is used to support the air conduction lower end surface of the air conduction speaker facing the annular side wall portion. The annular side wall portion is formed with a first groove, and the first accommodating cavity includes the first groove.

9. The earphone according to claim 7, characterized in that: The inner side surface of the annular side wall portion is formed with a second step portion, and the second step portion is used to support the bone conduction lower end surface of the bone conduction speaker facing the bottom wall portion. The bottom wall portion is formed with a second groove, and the second accommodating cavity includes the second groove.

10. The earphone according to claim 7, characterized in that The first annular flange includes an annular wall and a semi-enclosed portion, the annular wall is used to form the first accommodating cavity; along the vibration direction of the bone conduction speaker, the semi-enclosed portion encloses the outer side of the annular wall close to the bottom wall portion; A portion of the outer side surface of the annular wall close to the semi-enclosed portion is used to engage with the second shell, and an end surface of the semi-enclosed portion facing the second shell is used to engage with the second shell.

11. The earphone according to claim 10, characterized in that The annular side wall portion includes a first side wall portion and a second side wall portion connected to each other, and the first annular flange is protruded from the outside of the first side wall portion; the end surface of the annular side wall portion is smoothly connected to the end surface of the semi-enclosed portion to form a first annular curved surface, and the end surface of the annular side wall portion is used to engage with the second shell.

12. The earphone according to claim 10, characterized in that Along the depth direction of the first accommodating cavity and in the direction toward the second accommodating cavity, the end surface of the semi-enclosed portion gradually moves away from the end surface of the annular wall.

13. The earphone according to claim 1, characterized in that The first shell and the second shell are fixed by a limiting structure.

14. The earphone according to claim 10, characterized in that On the side away from the second accommodating cavity, a first limiting block is convexly provided on the end surface of the annular wall, and the second shell is provided with a corresponding first limiting groove, and the first limiting block is clamped in the first limiting groove.

15. The earphone according to claim 1, characterized in that The first shell includes a supporting block, and the supporting block is used to support the second shell.

16. The earphone according to claim 10, characterized in that Along the vibration direction of the bone conduction speaker, on a side close to the second accommodating cavity, a support block is provided on the outer surface of the annular wall, and the support block is used to support the second shell.

17. The earphone according to claim 16, characterized in that There are multiple support blocks, and the multiple support blocks are arranged at intervals; and / or As the support block approaches the second accommodating cavity, the height of the support block on the outer side of the annular wall gradually increases; and / or A third groove is provided on the inner surface of the second shell, and the third groove is used to cooperate with the supporting block.

18. The earphone according to claim 10, characterized in that Along the vibration direction of the bone conduction speaker, on the side close to the second accommodating cavity, a protrusion is provided on the outer surface of the annular wall; the protrusion extends along the circumference of the annular wall, and a fourth groove is provided on the inner surface of the second shell, and the protrusion cooperates with the fourth groove.

19. The earphone according to claim 18, characterized in that The protrusion is connected to the fourth groove by an adhesive.

20. The earphone according to claim 10, characterized in that At least on the side away from the semi-enclosed portion, the end surface of the annular wall is connected to the outer side surface of the annular wall by a chamfered surface.

21. The earphone according to claim 7, characterized in that On a side away from the first accommodating cavity, a second limiting block is convexly provided on the end surface of the annular side wall portion, and the second shell is provided with a corresponding second limiting groove, and the second limiting block is clamped in the second limiting groove.

22. The earphone according to any one of claims 1 to 6, characterized in that: The first shell is provided with an ear hook connection portion; In the vibration direction of the air conduction speaker, the bone conduction speaker is closer to the ear hook connecting part than the air conduction speaker.

23. The earphone according to any one of claims 1 to 6, characterized in that: The second shell has a planar contact area that contacts the user's face when in use, and in the normal direction of the planar contact area, the height difference between the planar contact area and the joint seam is greater than 0.5 mm.

24. The earphone according to any one of claims 1-6, characterized in that: The bone conduction speaker has an upper end surface and a bone conduction lower end surface which are arranged opposite to each other in the vibration direction; The central axis of the air conduction speaker is located between the upper end surface and the bone conduction lower end surface, and the ratio of the distance between the central axis and the upper end surface to the distance between the upper end surface and the bone conduction lower end surface is 40%-70%.

Images