Earphone

Abstract

The invention mainly relates to an earphone, the earphone comprises a fixing assembly and a holding part connected with the fixing assembly, the fixing assembly is used for enabling the holding part to be in contact with the front side of an ear in a wearing state, the holding part comprises a movement, the movement is provided with a vibrating diaphragm, and the holding part forms a front cavity and a rear cavity on the two opposite sides of the vibrating diaphragm respectively; the front cavity is provided with a first opening allowing the front cavity to be communicated with the outside of the earphone, the rear cavity is provided with a second opening allowing the rear cavity to be communicated with the outside of the earphone, and the second opening is farther away from the ear hole of the ear than the first opening, so that acoustic dipoles are formed and are reversely cancelled in a far field away from the ear; the ear part is also equivalent to a baffle plate, and an included angle between a connecting line between the center of the second opening and the center of the first opening and a reference plane where the upper ear root, the inter-screen incisura and the Darwin nodule are located is between 23 degrees and 53 degrees, so that sound transmitted to the outside of the earphone is converged, reflected and the like, sound field distribution is changed, and the sound effect is improved. The sound listening effect of the earphone can be improved, and sound leakage can be reduced.

Description

[0001] This application is a divisional application of the Chinese patent application with the application number 202110862630.X and the invention title of "An Earphone", which was filed with the Chinese Patent Office on July 29, 2021. This application claims the priority of the Chinese patent application with the application number 2020107433964 and the invention title of "An Earphone", which was filed with the Chinese Patent Office on July 29, 2020. Technical Field

[0002] This application relates to the technical field of sound - generating devices, and more particularly to an earphone. Background Art

[0003] Earphones have been widely used in people's daily lives. They can be used in conjunction with electronic devices such as mobile phones and computers to provide an auditory feast for users. Among them, according to the working principle of earphones, they can generally be divided into air - conduction earphones and bone - conduction earphones; according to the way users wear earphones, they can generally be divided into over - ear earphones, ear - hook earphones and in - ear earphones; according to the interaction method between earphones and electronic devices, they can generally be divided into wired earphones and wireless earphones. Summary of the Invention

[0004] An embodiment of this application provides an earphone. The earphone includes a fixing component and a holding part connected to the fixing component. The fixing component is used to make the holding part contact the front side of the user's ear in the wearing state. The holding part includes a movement, and the movement has a diaphragm. The holding part forms a front cavity and a rear cavity on the opposite sides of the diaphragm respectively. The front cavity has a first opening allowing the front cavity to communicate with the outside of the earphone, and the rear cavity has a second opening allowing the rear cavity to communicate with the outside of the earphone. The second opening is farther from the ear hole of the ear than the first opening; the lines connecting the upper ear root, the intertragic notch and the Darwin's tubercle of the ear form a reference plane, and the angle between the line connecting the center of the second opening and the center of the first opening and the reference plane is between 23° and 53°.

[0005] The beneficial effect of this application is that the sound output from the first and second openings to the outside of the earphone can form a sound dipole, which cancels each other out in the far - field away from the ear to achieve leakage reduction; the user's ear also acts as a baffle, and the angle between the line of the sound dipole and the reference plane formed by the lines connecting the upper ear root, the intertragic notch and the Darwin's tubercle of the ear is between 23° and 53°, which has the effects of converging and reflecting the sound transmitted to the outside of the earphone, thereby changing the sound field distribution. This is not only beneficial to improving the listening effect of the earphone but also beneficial to reducing leakage. Description of the Drawings

[0006] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0007] Figure 1 It is a schematic front-side structure diagram of the contour of the ear of the user described in the present application;

[0008] Figure 2 It is a schematic front-view structure diagram of an embodiment of the earphone provided by the present application;

[0009] Figure 3 is Figure 2 The left-view structure diagram of the earphone in ;

[0010] Figure 4 is Figure 2 The front-side perspective view of the earphone in the worn state;

[0011] Figure 5 is Figure 2 The rear-side perspective view of the earphone in the worn state;

[0012] Figure 6 is Figure 2 The mechanical model diagram of the earphone in the worn state;

[0013] Figure 7 It is a schematic front-view structure diagram of another embodiment of the earphone provided by the present application;

[0014] Figure 8 is Figure 7 The left-view structure diagram of the earphone in ;

[0015] Figure 9 is Figure 7 The front-side perspective view of the earphone in the worn state;

[0016] Figure 10 is Figure 7 The rear-side perspective view of the earphone in the worn state;

[0017] Figure 11 is Figure 7 The mechanical model diagram of the earphone in the worn state;

[0018] Figure 12 It is a schematic top-view structure diagram of another embodiment of the earphone provided by the present application;

[0019] Figure 13 It is a schematic front-view structure diagram of another embodiment of the earphone provided by the present application;

[0020] Figure 14 is a structural schematic diagram of yet another embodiment of the earphone provided by the present application;

[0021] Figure 15 yes Figure 14 Schematic diagram of the mechanical model of the middle earphone in the wearing state;

[0022] Figure 16 is a schematic structural diagram of a side of an earphone embodiment provided by the present application that is away from the ear;

[0023] Figure 17 is a schematic structural diagram of a side of an earphone embodiment provided by the present application that faces the ear;

[0024] Figure 18 is a schematic structural diagram of an embodiment of a headset provided by the present application viewed from the side of the top of a user's head;

[0025] Figure 19 is a schematic diagram of the disassembled structure of an embodiment of the earphone provided by the present application;

[0026] Figure 20 is a schematic diagram of the disassembled structure of an embodiment of the earphone provided by the present application;

[0027] Figure 21 is a schematic diagram of the disassembled structure of an embodiment of the earphone provided by the present application;

[0028] Figure 22 is a schematic cross-sectional structure diagram of an embodiment of an earphone provided by the present application;

[0029] Figure 23 is a schematic structural diagram of a side of an earphone embodiment provided by the present application that is away from the ear;

[0030] Figure 24 is a schematic structural diagram of an embodiment of a headset provided by the present application viewed from the side of the top of a user's head;

[0031] Figure 25 is a schematic diagram of the disassembled structure of an embodiment of the earphone provided by the present application;

[0032] Figure 26 This is a schematic diagram of the structure of a movement embodiment provided by the present application, facing the mainboard side;

[0033] Figure 27 is a schematic diagram of the disassembled structure of an embodiment of the earphone provided by the present application;

[0034] Figure 28 is a schematic structural diagram of a side of an earphone embodiment provided by the present application that is away from the ear;

[0035] Figure 29It is a schematic structural diagram of an embodiment of the earphone provided by the present application as observed from one side of the user's head;

[0036] Figure 30 It is a schematic disassembled structural diagram of an embodiment of the earphone provided by the present application;

[0037] Figure 31 It is a schematic structural diagram of one side of a partition embodiment provided by the present application facing the movement;

[0038] Figure 32 It is a schematic cross-sectional structural diagram of an embodiment of the earphone provided by the present application;

[0039] Figure 33 It is a schematic cross-sectional structural diagram of an embodiment of the earphone provided by the present application;

[0040] Figure 34 It is a schematic diagram of the sound field distribution of the sound dipole provided by the present application;

[0041] Figure 35 It is a schematic diagram of the sound field distribution of the sound dipole with a baffle provided by the present application;

[0042] Figure 36 It is a schematic diagram of the far-field sound pressure of whether the sound dipole is with a baffle provided by the present application;

[0043] Figure 37 It is a schematic diagram of the theoretical model of the sound dipole with a baffle provided by the present application;

[0044] Figure 38 It is a schematic diagram of the relationship between the parameter α and the angle θ provided by the present application;

[0045] Figure 39 It is a schematic diagram of the relative relationship between an embodiment of the sound dipole and the ear provided by the present application;

[0046] Figure 40 It is a schematic structural diagram of one side of an embodiment of the earphone provided by the present application facing the ear;

[0047] Figure 41 It is a schematic structural diagram of an embodiment of the earphone provided by the present application;

[0048] Figure 42 It is a schematic diagram of the frequency response curve of an embodiment of the earphone provided by the present application;

[0049] Figure 43 It is a schematic structural diagram of the rear cavity of an embodiment of the earphone provided by the present application;

[0050] Figure 44 It is a schematic diagram of the frequency response curve of an embodiment of the earphone provided by the present application;

[0051] Figure 45These are schematic structural diagrams of three embodiments of the earphones provided in this application when they are respectively in a worn state. Detailed implementation manners

[0052] The following will further describe this application in detail in conjunction with the accompanying drawings and embodiments. It should be specifically noted that the following embodiments are only used to illustrate this application, but do not limit the scope of this application. Similarly, the following embodiments are only some embodiments of this application rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

[0053] When "embodiment" is mentioned in this application, it means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of this application. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0054] Refer to Figure 1 , Figure 1 This is a schematic diagram of the front side structure of a contour of the ear of the user described in this application.

[0055] As Figure 1 shown, in addition to the external auditory canal 101 and the nearby cymba conchae 102 of the user's ear 100, parts such as the cymba auriculae 103 and the triangular fossa 104 also have a certain depth and volume in three-dimensional space and can also be used to meet the wearing requirements of the earphones. In other words, by reasonably designing the structure of the earphones and relying on the parts of the user's ear 100 other than the external auditory canal 101, the wearing of the earphones and the transmission of mechanical vibrations can also be achieved, and the external auditory canal 101 of the user can be "liberated", thereby not only increasing the user's physical health but also reducing the probability of traffic accidents. Based on this, this application creatively proposes an earphone, mainly relying on the upper half of the user's ear 100 (specifically, the area where parts such as the cymba auriculae 103, the triangular fossa 104, the antihelix 105, the scaphoid fossa 106, and the helix 107 are located) to achieve the wearing of the earphones and the transmission of mechanical vibrations. Of course, in order to improve the comfort and reliability of the earphones in terms of wearing, parts such as the user's earlobe 108 can also be further relied on. Further, for the convenience of description, some relatively special physiological positions on the ear 100 can also be further marked, such as the upper ear root LA where the leading edge of the helix 107 is connected to the head, the Darwin's tubercle LB on the helix 107, the incisura anthelicis LC where the antihelix 105 is close to the earlobe 108 and faces the cymba conchae 102, and the incisura intertragica LD where the cymba conchae 102 is close to the earlobe 108. Of course, due to individual differences among users, physiological positions such as Darwin's tubercle may not be obvious or even absent on the ears of some users, but this does not mean that other users' ears do not have such physiological positions.

[0056] It should be noted that although the external auditory canal has a certain depth to extend to the tympanic membrane, for the sake of convenience of description, Figure 1 In this application, unless otherwise specified, the external auditory canal specifically refers to the entrance away from the eardrum, that is, the ear hole. Furthermore, the "front side of the ear" mentioned in this application is a concept relative to the "back side of the ear". The former refers to the side of the ear away from the head, for example Figure 1 , the latter refers to the side of the ear facing the head, and they are all aimed at the user's ears.

[0057] Shared Reference Figures 2 to 5 , Figure 2 is a schematic diagram of the main structure of an embodiment of the earphone provided by the present application, Figure 3 yes Figure 2 The left side structure diagram of the middle earphone. Figure 4 yes Figure 2 Schematic diagram of the front view of the earphone in the wearing state. Figure 5 yes Figure 2 Schematic diagram of the earphone in the rear view when worn. It should be noted that: Figure 2 The three directions of the headset are shown in the figure, mainly to illustrate the three planes of XY, XZ, and YZ, so as to facilitate the corresponding description in the following text. Therefore, all directional indications in this application (such as up, down, left, right, front, back, etc.) are mainly used to explain the direction of the headset in a certain posture (such as the attached Figure 2 The relative position relationship, movement status, etc. between the various components under the display (as shown); if the specific posture changes, the directional indication will also change accordingly.

[0058] like Figure 2 and Figure 3 As shown, the earphone 10 may include a hook portion 11, a connecting portion 12 and a retaining portion 13. The connecting portion 12 connects the hook portion 11 and the retaining portion 13, so that the earphone 10 is curved in three-dimensional space when it is not worn (i.e., in a natural state). In other words, in three-dimensional space, the hook portion 11, the connecting portion 12 and the retaining portion 13 are not coplanar. This arrangement allows the earphone 10 to be bent when it is worn, such as when it is worn. Figure 4 and Figure 5As shown, the hook portion 11 can be mainly used to be hung between the rear side of the user's ear and the head, and the holding portion 13 can be mainly used to contact the front side of the user's ear, so as to allow the holding portion 13 and the hook portion 11 to cooperate to clamp the ear. Exemplarily, the connecting portion 12 can extend from the head to the outside of the head, and then cooperate with the hook portion 11 to provide a pressing force on the front side of the ear for the holding portion 13. Wherein, under the action of the pressing force, the holding portion 13 can specifically press against the area where parts such as the cymba conchae, triangular fossa, and antihelix are located, so that when the earphone 10 is in a wearing state, the external auditory canal of the ear is not blocked. Exemplarily, when the earphone 10 is in a wearing state, the projection of the holding portion 13 on the user's ear mainly falls within the range of the helix of the ear; further, the holding portion 13 can be located on the side of the external auditory canal of the ear close to the user's head top and contact the helix and / or antihelix. In this way, it can not only avoid the holding portion 13 from blocking the external auditory canal, thus liberating the user's ears; but also increase the contact area between the holding portion 13 and the ear, thereby improving the wearing comfort of the earphone 10.

[0059] It should be noted that: Based on the ANSI:S3.36, S3.25 and IEC:60318-7 standards, a simulator including a head and its (left and right) ears can be manufactured, such as GRAS 45BC KEMAR. Therefore, descriptions such as "the user wears the earphone" or "the earphone is in a wearing state" in this application can refer to the earphone being worn on the ears of the aforementioned simulator. Based on this, the "wearing state" described in this application can refer to the normal wearing state after the earphone is worn on the ears of the aforementioned simulator; for the convenience of description, the aforementioned normal wearing state can be further schematically shown from perspectives such as the front side and the rear side of the ear, for example Figure 4 and Figure 5 the normal wearing state shown, and for another example Figure 9 and Figure 10 the normal wearing state shown. Of course, due to individual differences of users, the actual wearing state of the earphone 10 may have certain differences compared with the aforementioned normal wearing state.

[0060] For users of types such as adult males, the thickness of their ears is often relatively thick (commonly known as "thick ears"). By reasonably designing structural parameters such as the shape and size of the connecting portion 12 and its connection relationship with the hook portion 11 and the holding portion 13, which will be exemplarily described later, it can not only ensure that the earphone 10 fits the ear as much as possible to improve the wearing stability of the earphone 10, but also avoid the earphone 10 overly clamping the helix near the upper ear root, that is, naturally bypassing the upper ear root to improve the wearing comfort of the earphone 10. Further, for users of types such as children, minors, and adult females, the thickness of their ears is often relatively thin (commonly known as "thin ears"), especially compared with the thickness of the ears of adult males. In order to increase the degree of fit between the earphone 10 and the user's ear when the earphone 10 is in a worn state, the size of the connecting portion 12 can be very small. For example, the connecting portion 12 is an arc transition between the holding portion 13 and the hook portion 11.

[0061] Further, the earphone 10 may further include a movement 14, a main board 15, and a battery 16. Among them, the movement 14 is mainly used to convert an electrical signal into a corresponding mechanical vibration (that is, "generate sound"), and can be electrically connected to the main board 15 and the battery 16 through corresponding conductors; the main board 15 is mainly used to control the sound generation of the movement 14, and the battery 16 is mainly used to provide electrical energy for the sound generation of the movement 14. Of course, the earphone 10 described in this application may further include microphones, pickups and other types of microphones, and may further include communication devices such as Bluetooth and NFC (Near Field Communication), which are electrically connected to the main board 15 and the battery 16 through corresponding conductors to achieve corresponding functions.

[0062] As an example, the movement 14 can be fixed to the holding portion 13, and when the earphone 10 is in a worn state, the movement 14 can be closely attached to the user's ear under the action of a pressing force. Further, when the earphone 10 is in a worn state, since the holding portion 13 is mainly located on the front side of the user's ear, as Figure 4 shown, so that in addition to fixing the movement 14, the holding portion 13 can also be provided with some function buttons that facilitate the user to interact with the earphone 10 ( Figure 2 not shown in the figure). Based on this, the main board 15 can also be provided on the holding portion 13 to shorten the wiring distance between the movement 14 and other components such as function buttons and the main board 15. It should be noted that: since the holding portion 13 can be provided with the movement 14, the main board 15, function buttons, etc., and is located on the front side of the user's ear when the earphone 10 is in a worn state, the battery 16 can be provided in the hook portion 11 and is mainly located between the rear side of the user's ear and the head when the earphone 10 is in a worn state, as Figure 5As shown. With such a setting, not only can the capacity of the battery 16 be increased to improve the battery life of the earphone 10, but also the weight of the earphone 10 can be balanced to improve the stability and comfort of the earphone 10 during wearing. At this time, the weight of the earphone 10 can be more evenly distributed at both ends, and the user's ear can also serve as a fulcrum to support the earphone 10 when the earphone 10 is in the wearing state, so that the earphone 10 can at least not slip off in a non-moving state when it is in the wearing state. Of course, accordingly, the user's ear will bear most of the weight of the earphone 10, which may easily cause discomfort in the scenario of long-term wearing. For this reason, structures such as the hook portion 11, the connecting portion 12, and the holding portion 13 can be made of a relatively soft material (such as polycarbonate, polyamide, acrylonitrile-butadiene-styrene copolymer, etc.) to facilitate improving the comfort of the earphone 10 during wearing. Further, in order to improve the structural strength of the earphone 10, elastic metal wires such as spring steel, titanium alloy, titanium-nickel alloy, chromium-molybdenum steel, etc. can also be provided inside structures such as the hook portion 11, the connecting portion 12, and the holding portion 13.

[0063] Further, different users may have significant differences in aspects such as age, gender, and gene-controlled trait expression, resulting in different sizes and shapes of the ears and heads of different users. For this reason, the hook portion 11 can be rotatable relative to the connecting portion 12, or the holding portion 13 can be rotatable relative to the connecting portion 12, or a part of the connecting portion 12 can be rotatable relative to another part, so that the relative positional relationship of the hook portion 11, the connecting portion 12, and the holding portion 13 in three-dimensional space can be adjusted, so as to facilitate the earphone 10 to adapt to different users, that is, to increase the applicable range of the earphone 10 for users during wearing. For example: The connecting portion 12 is made of a deformable material such as soft steel wire. The user bends the connecting portion 12 to make a part of it rotate relative to another part, and the relative position of the hook portion 11, the connecting portion 12, and the holding portion 13 in three-dimensional space can be adjusted, thereby meeting their wearing needs. Another example: The connecting portion 12 is provided with a rotating shaft mechanism 121. The user can also adjust the relative position of the hook portion 11, the connecting portion 12, and the holding portion 13 in three-dimensional space through the rotating shaft mechanism 121, thereby meeting their wearing needs. Among them, the detailed structure of the rotating shaft mechanism 121 is within the understanding of those skilled in the art of this technical field and will not be elaborated here. Further, if the hook portion 11 is movably connected to the connecting portion 12 through the rotating shaft mechanism 121, the hook portion 11 can be rotatable relative to the connecting portion 12; if the holding portion 13 is movably connected to the connecting portion 12 through the rotating shaft mechanism 121, the holding portion 13 can be rotatable relative to the connecting portion 12; if a part of the connecting portion 12 is movably connected to another part through the rotating shaft mechanism 121, a part of the connecting portion 12 can be rotatable relative to another part.

[0064] Refer to Figure 6 , Figure 6 isFigure 2 Schematic diagram of the mechanical model when the earphone is in a worn state. It should be noted that: Figure 6 In Figure 6 , the YZ plane can be regarded as the plane where the user's head is located; Figure 6 In Figure 6 , the ABC segment can be regarded as the hook portion, Figure 6 In Figure 6 , the CD segment can be regarded as the connecting portion, Figure 6 In Figure 6 , the DEF segment can be regarded as the holding portion. Further, Figure 6 In Figure 6 , point C can correspond to Figure 1 the region near the upper end of the ear (such as Figure 1 the region shown by the virtual frame C in Figure 1 ).

[0065] As Figures 4 to 6 shown, when the earphone 10 is in a worn state, the ABC segment is mainly located at the rear side of the user's ear, the DEF is mainly located at the front side of the user's ear, and the CD segment is mainly adapted to the thickness of the user's ear. At this time, the BC segment, the CD segment, and the DEF segment can form a structure similar to a "clip" so that the earphone 10 can be clamped on the user's ear, thereby forming the basic posture of wearing. The following is an exemplary description of the force condition and stability of the earphone 10 in terms of wearing:

[0066] As Figure 6 shown, in the direction from the first connection point C between the hook portion 11 and the connecting portion 12 to the free end of the hook portion 11 (for example, Figure 6 the end where point A is located in Figure 6 ), the hook portion 11 bends towards the user's head and forms a first contact point B and a second contact point A with the head. Among them, the first contact point B is located between the second contact point A and the first connection point C. It should be noted that: both the first contact point B and the second contact point A are defined points in the mechanical model. When actually wearing, due to differences in the physiological structures of different users' heads and ears, etc., it will have a certain impact on the actual wearing of the earphone 10. The position where the earphone 10 actually contacts the head can correspond to the free end of the hook portion 11, or any point between the above free end and the first contact point B; of course, the AB segment can also partially or entirely abut against the user's head, and its mechanical model and the stability principle in actual wearing are the same as the above technical solutions, which can be easily known and adjusted by those skilled in the art on the basis of the technical solutions of this application without creative labor, and will not be elaborated here. By setting like this, the hook portion 11 forms a lever structure with the first contact point B as the fulcrum. At this time, the free end of the hook portion 11 presses against the user's head, and the user's head provides a force pointing to the outside of the head at the second contact point A. This force is converted into a force pointing to the head at the first connection point C through the lever structure, and then provides a pressing force on the front side of the ear through the connecting portion 12 to the holding portion 13.

[0067] It should be noted that in order for the free end of the hook portion 11 to press against the user's head when the earphone 10 is in a worn state and for the user's head to provide a force pointing outward from the head at the second contact point A, at least the following conditions need to be met: the angle formed between the free end of the hook portion 11 and the YZ plane when the earphone 10 is in a non-worn state is greater than the angle formed between the free end of the hook portion 11 and the YZ plane when the earphone 10 is in a worn state. Among them, the larger the angle formed between the free end of the hook portion 11 and the YZ plane when the earphone 10 is in a non-worn state, the better the free end of the hook portion 11 can press against the user's head when the earphone 10 is in a worn state, and the greater the force that the user's head can provide pointing outward from the head at the second contact point A accordingly.

[0068] It is worth noting that when the free end of the hook portion 11 presses against the user's head, in addition to causing the user's head to provide a force pointing outward from the head at the second contact point A, it will also cause at least the BC section of the hook portion 11 to form another pressing force on the rear side of the ear, and can cooperate with the pressing force formed by the holding portion 13 on the front side of the ear to form a "front and back clamping" pressing effect on the user's ear, thereby improving the wearing stability of the earphone 10.

[0069] Furthermore, the battery 16 can mainly be arranged on the AB section of the hook portion 11 to facilitate overcoming the self-weight of the holding portion 13 and its internal movement 14, main board 15 and other structures, thereby improving the wearing stability of the earphone 10. Of course, the surfaces of the hook portion 11 in contact with the user's ear and head can also be set as structures such as a matte surface, a textured surface, etc. to increase the friction between the hook portion 11 and the user's ear and head, so as to facilitate overcoming the self-weight of the holding portion 13 and its internal movement 14, main board 15 and other structures, thereby improving the wearing stability of the earphone 10. Further, the free end of the hook portion 11 (especially the area where point A is located) can be deformable, so that when the earphone 10 is in a worn state, the free end of the hook portion 11 presses against the user's head and deforms, increasing the contact area between the free end of the hook portion 11 and the user's head, thereby improving the wearing comfort and stability of the earphone 10. For example: the hook portion 11 is formed by two-color injection molding, and the elastic modulus of its free end (especially the area where point A is located) is less than that of other areas to increase the deformation ability of the free end. Another example: the free end of the hook portion 11 is provided with holes 111 to make it a hollow structure to increase the deformation ability of the free end. Among them, the holes 111 can be through holes and / or blind holes, the number thereof can be one or more, and the axial direction thereof can be perpendicular to the contact surface between the free end of the hook portion 11 and the user's head.

[0070] Exemplarily, the linear distance between the projection of point C on the YZ plane and the projection of the EF segment on the YZ plane can be 10 - 17 mm, preferably 12 - 16 mm, more preferably 13 - 15 mm. The angle between the projection of the BC segment on the XY plane and the projection of the DE segment on the XY plane is 0 - 25°, preferably 0 - 20°, more preferably 2 - 20°. Further, the angle between the AB segment and the normal line passing through point B on the XY plane is 0 - 25°, preferably 0 - 20°, more preferably 2 - 20°. Further, in some embodiments, the linear distance between the projection of point C on the XY plane and the projection of the EF segment on the XY plane can be 2 - 4 mm, preferably 2.8 mm. Of course, in some other embodiments, the linear distance between the projection of point C on the XY plane and the projection of the EF segment on the XY plane can be 1 - 4 mm, preferably 2.5 mm. In this way, it is convenient for the connecting portion 12 to bypass the upper ear root of the ear in the wearing state, improving the wearing comfort of the earphone 10.

[0071] Based on the above detailed description, on the one hand, the present application reasonably and evenly distributes the weight of the earphone 10, so that the user's ear can support the earphone 10 as a fulcrum when the earphone 10 is in the wearing state; on the other hand, a connecting portion 12 is provided between the hook-shaped portion 11 and the holding portion 13 of the earphone 10, so that when the earphone 10 is in the wearing state, the connecting portion 12 cooperates with the hook-shaped portion 11 to provide a pressing force on the front side of the ear for the holding portion 13, and further enables the earphone 10 to firmly adhere to the user's ear when in the wearing state. With such a setting, both the stability of the earphone 10 in wearing and the reliability of the earphone 10 in sound emission can be improved.

[0072] Please refer jointly to Figures 7 to 11 , Figure 7 which is a front view structural schematic diagram of another embodiment of the earphone provided by the present application, Figure 8 is Figure 7 the left view structural schematic diagram of the earphone in Figure 9 is Figure 7 the front-side perspective schematic diagram of the earphone in the wearing state in Figure 10 is Figure 7 the rear-side perspective schematic diagram of the earphone in the wearing state in Figure 11 is Figure 7 the mechanical model schematic diagram of the earphone in the wearing state in. It should be noted that: Figure 11 the YZ plane in Figure 11 can be regarded as the plane where the user's head is located; Figure 11 the ABC segment in Figure 11 can be regarded as the hook-shaped portion, Figure 11 the CD segment inFigure 1 The area near the upper and proximal end of the middle ear (such as Figure 1 the area shown by the virtual frame C).

[0073] As Figures 4 to 6 shown, when the earphone 10 is in the worn state, the ABC segment is mainly located at the rear side of the user's ear, the DEF is mainly located at the front side of the user's ear, and the CD segment is mainly adapted to the thickness of the user's ear. At this time, the BC segment, the CD segment and the DEF segment can form a structure similar to a "clip" so that the earphone 10 can be clamped on the user's ear, thereby forming the basic posture of wearing. The following is an exemplary description of the force condition and stability of the earphone 10 in terms of wearing:

[0074] The main difference from the above embodiment is that in this embodiment, as Figure 7 and Figure 8 shown, the hook portion 11 is closer to the holding portion 13 as a whole, so that when the earphone 10 is in the worn state, as Figure 9 and Figure 10 shown, the free end of the hook portion 11 departing from the connecting portion 12 acts on the rear side of the user's ear instead of pressing against the user's head.

[0075] As Figure 11 shown, in the direction from the first connection point C between the hook portion 11 and the connecting portion 12 to the free end of the hook portion 11 (for example Figure 11 the end where point A is located in ), the hook portion 11 is bent towards the rear side of the ear and forms a first contact point B with the rear side of the ear, and the holding portion 13 forms a second contact point F with the front side of the ear. Among them, for the earphone 10, in the natural state (that is, the non-worn state), the distance between the first contact point B and the second contact point F along the extension direction of the connecting portion 12 is smaller than the distance between the first contact point B and the second contact point E along the extension direction of the connecting portion 12 in the worn state, thereby providing a pressing force on the front side of the ear for the holding portion 13. In other words, the distance between the first contact point B and the second contact point F along the extension direction of the connecting portion 12 of the earphone 10 in the natural state is smaller than the thickness of the user's ear, so that the earphone 10 can be clamped on the user's ear like a "clip" in the worn state.

[0076] Furthermore, there is a first connection line BC between the first contact point B and the first connection point C, and a second connection line EF between the second contact point F and the second connection point E of the holding portion 13 and the connecting portion 12.

[0077] Furthermore, the hook portion 11 can also extend in a direction away from the connecting portion 12, that is, extend the overall length of the hook portion 11. When the earphone 10 is in a worn state, the hook portion 11 can also form a third contact point A with the rear side of the ear. The first contact point B is located between the first connection point C and the third contact point A and is close to the first connection point C. Among them, for the earphone 10, in the natural state, the distance between the projections of the first contact point B and the third contact point A on a reference plane (such as Figure 11 the YZ plane in Figure 11 ) perpendicular to the extension direction of the connecting portion 12 is less than the distance between the projections of the first contact point B and the third contact point A on a reference plane (such as Figure 11 the YZ plane in

[0078] ) perpendicular to the extension direction of the connecting portion 12 in the worn state. With such a setting, not only can the free end of the hook portion 11 press against the rear side of the user's ear, but the ABC segment can be in a C shape. Among them, the third contact point A can be located in the area of the ear near the earlobe, so that the hook portion 11 can clamp the user's ear in the vertical direction (such as Figure 11 the arrow Z in

[0078] ) to overcome the self-weight of the holding portion 13. In addition, after the overall length of the hook portion 11 is extended, it can not only clamp the user's ear in the vertical direction, but also increase the contact area between the hook portion 11 and the user's ear, that is, increase the friction between the hook portion 11 and the user's ear, thereby improving the wearing stability of the earphone 10. Refer to Figure 12 , Figure 12 which is a top view structural schematic diagram of another embodiment of the earphone provided by the present application.

[0079] The main difference from any of the above embodiments is that in this embodiment, the holding portion 13 not only presses against the front side of the user's ear, but can also further extend and be held in the cymba conchae and / or triangular fossa of the ear. With such a setting, the holding portion 13 can be blocked by the helix of the ear at least in the extension direction of the connecting portion 12 to prevent the holding portion 13 from turning outwards when the earphone 10 is in a worn state, thereby improving the wearing stability of the earphone 10.

[0080] As an example, as Figure 12 shown, the earphone 10 further includes an extension portion 17, and the extension portion 17 is connected to the holding portion 13. Among them, in the extension direction of the connecting portion 12 ( Figure 12In the figure (arrow X), there is a gap between the extension portion 17 and the retaining portion 13, and the gap may be less than or equal to the thickness of the helix of the ear. With such arrangement, when the earphone 10 is in the wearing state, the extension portion 17 can extend into the cymba concha and / or the triangular fossa of the ear. At this time, since the cymba concha and / or the triangular fossa have a certain depth and volume in three-dimensional space, the retaining portion 13 can be hooked by the helix of the ear when the extension portion 17 extends into the cymba concha and / or the triangular fossa, so as to avoid the retaining portion 13 from everting outward when the earphone 10 is in the wearing state, thereby improving the stability of the earphone 10 in wearing. At the same time, the retaining portion 13 is pressed against the front side of the ear under the action of the above-mentioned pressing force, and the two cooperate with each other, which is conducive to increasing the stability of the earphone 10 in wearing.

[0081] See also Figure 13 , Figure 13 It is a schematic diagram of the main structure of another embodiment of the earphone provided in the present application.

[0082] The main difference from any of the above embodiments is that in this embodiment, the retaining portion 13 is a multi-segment structure, so as to adjust the relative position of the movement 14 on the overall structure of the earphone 10. In this way, when the earphone 10 is in the wearing state, the external auditory canal of the ear can be not blocked, and the movement 14 can be as close to the external auditory canal as possible.

[0083] As an example, Figure 13 As shown in (a), the retaining portion 13 may include a first retaining segment 131a, a second retaining segment 132a and a third retaining segment 133a which are connected end to end in sequence. Among them, the end of the first retaining segment 131a away from the second retaining segment 132a is connected to the connecting portion 12, and the third retaining segment 133a is mainly used to set structural parts such as the movement 14 and the main board 15. Furthermore, the second retaining segment 132a is folded back relative to the first retaining segment 131a and has a spacing, that is, the two are in a U-shaped structure.

[0084] As an example, Figure 13 As shown in (b), the retaining portion 13 may include a first retaining segment 131b, a second retaining segment 132b and a third retaining segment 133b connected end to end in sequence. Among them, the end of the first retaining segment 131b away from the second retaining segment 132b is connected to the connecting portion 12, and the third retaining segment 133b is mainly used to set structural parts such as the movement 14 and the main board 15. Furthermore, the second retaining segment 132b is bent relative to the first retaining segment 131b, so that there is a gap between the third retaining segment 133b and the first retaining segment 131b.

[0085] Shared Reference Figure 14 and Figure 15 , Figure 14 is a structural schematic diagram of another embodiment of the earphone provided by the present application,Figure 15 is Figure 14 a schematic diagram of the mechanical model when the earphone is in a worn state. It should be noted that: Figure 15 in it, the YZ plane can be regarded as the plane where the user's head is located; Figure 15 in it, the BC segment can be regarded as the hook part, Figure 15 in it, the CD segment can be regarded as the connecting part, Figure 15 in it, the DEF segment can be regarded as the holding part, Figure 15 in it, the GH segment can be regarded as the extending part. Further, Figure 15 in it, point C can correspond to Figure 1 the area near the upper end of the ear in the middle ear (such as Figure 1 the area shown by the virtual frame C in it).

[0086] The main difference from any of the above embodiments is that in this embodiment, as Figure 14 shown, the length of the hook part 11 is shorter, and the angle between the hook part 11 and the connecting part 12 is smaller; the extending part 17 is connected to the holding part 13 and has a gap with the holding part 13, and this gap can be less than or equal to the thickness of the antihelix of the ear. With such a setting, when the earphone 10 is in a worn state, the hook part 11 and the connecting part 12 cooperate to make the holding part 13 hang on the front side of the user's ear, and the extending part 17 can extend into the cymba conchae and / or triangular fossa of the ear to prevent the holding part 13 from turning outwards, thereby improving the stability of the earphone 10 in terms of wearing. Among them, this embodiment takes the extending part 17 being able to extend into the cymba conchae of the ear as an example for exemplary illustration.

[0087] As Figure 15 shown, point B hooks the depression at the back side of the ear, and point C serves as a fulcrum so that the hook part 11 can overcome the self - weight of the holding part 13, thereby preventing the holding part 13 from falling off the user's ear. At this time, the friction between the hook part 11 and the ear can also be increased to improve the stability of the earphone 10 in terms of wearing. Further, point H hooks the antihelix of the ear, and point G serves as another fulcrum so that the extending part 17 can overcome the self - weight of the holding part 13, thereby preventing the holding part 13 from turning outwards from the user's ear. At this time, the friction between the extending part 17 and the ear can also be increased to improve the stability of the earphone 10 in terms of wearing.

[0088] Based on the above - mentioned related descriptions, in the worn state, the earphone 10 can be clamped on the ear. Among them, in order to increase the stability and comfort of wearing, the earphone 10 can elastically clamp the ear.

[0089] As an example, in combination with Figure 16, the hook portion 11 may include an elastic portion 112 connected to the connecting portion 12 and a battery portion 113 located at the free end of the hook portion 11. Among them, the battery portion 113 is at least used to arrange the battery 16 of the earphone 10, and the battery 16 may be arranged in a columnar shape. In order to facilitate the arrangement of structural components such as the battery 16, the battery portion 113 may be made of a relatively hard material, such as a hard plastic part; of course, in order to take into account the wearing comfort, at least the area of the battery portion 113 in contact with the user's skin may be provided with an elastic coating layer, or sprayed with elastic paint, etc. Further, compared with the battery portion 113, the elastic portion 112 may have a certain elastic deformation ability, so that the hook portion 11 can deform under an external force, and then generate a displacement relative to the holding portion 13, so as to allow the hook portion 11 to cooperate with the holding portion 13 to elastically clamp the ear. In this way, when the user wears the earphone 10, he can first apply a little force to make the hook portion 11 deviate from the holding portion 13, so that the ear can extend into the space between the holding portion 13 and the hook portion 11; after the wearing position is appropriate, release the hand to allow the earphone 10 to elastically clamp the ear; of course, the position of the earphone 10 on the ear can also be further adjusted according to the actual wearing situation.

[0090] The ratio between the length of the elastic portion 112 and the length of the hook portion 11 may be greater than or equal to 48%, preferably the aforementioned ratio may be greater than or equal to 60%; the radial dimension in any direction on the cross-section of the elastic portion 112 may be less than or equal to 5 mm, preferably the aforementioned radial dimension may be less than or equal to 4 mm. In this way, the elastic portion 112 can be set as a slender structure, so that the elastic portion 112 has better elastic deformation ability, and then the earphone 10 can better elastically clamp the ear. In addition, the cross-sectional area of the elastic portion 112 is as small as possible, which can also leave corresponding wearing space for myopia glasses, hyperopia glasses, or smart glasses such as AR, VR, MR, etc., so as to take into account the other wearing needs of the user. Further, since the hook portion 11 is mainly hung between the user's head and ear, the cross-section of the elastic portion 112 may be circular or oval, so that at least the elastic portion 112 can better contact the ear and / or the head, and can be as close as possible to the boundary line between the ear and the head, thereby increasing the wearing stability.

[0091] The cross-sectional area of at least part of the battery portion 113 may be larger than the maximum cross-sectional area of the elastic portion 112, so that the battery portion 113 can be provided with a larger-capacity battery 16 to increase the battery life of the earphone 10. In some embodiments, the battery portion 113 may be arranged in a columnar shape, and the ratio between the length and the outer diameter may be less than or equal to 6.

[0092] Based on the above description, for the hook portion 11, since the elastic portion 112 and the battery portion 113 have different uses, the cross-sectional areas of the two may be quite different. To this end, the hook portion 11 may further include a transition portion 114 located between the elastic portion 112 and the battery portion 113, and the cross-sectional area of the transition portion 114 is between the cross-sectional area of the elastic portion 112 and the cross-sectional area of the battery portion 113, and gradually increases in the direction from the elastic portion 112 to the battery portion 113. In this way, not only can the symmetry of the hook portion 11 be increased in appearance, but also the hook portion 11 can be better in contact with the ear and / or the head. Furthermore, since there are generally multiple ridges on the back side of the ear, such as the ridge corresponding to the hymena concha and the ridge corresponding to the cavum concha, and the ridge of the cavum concha is generally closer to the earlobe than the ridge of the hymena concha, the transition portion 114 can be provided with a contoured depression corresponding to the back contour of the ear on the side facing the ear, thereby facilitating the hook-shaped portion 11 to form an effective contact with the back side of the ear, such as the aforementioned contoured depression in contact with the ridge of the cavum concha. In short, the ridge on the back side of the ear can be avoided by the aforementioned contoured depression to prevent the ridge on the back side of the ear from lifting the hook-shaped portion 11, thereby allowing the hook-shaped portion 11 to better contact the ear. In some embodiments, for the transition portion 114, on a reference cross section arranged along the central axis of the battery portion 113, the curvature radius of the aforementioned contoured recess may be smaller than the curvature radius of the other side of the transition portion 114 away from the ear, that is, the curvature of the contoured recess may be greater, so that the hook portion 11 can adapt to various protrusions and depressions on the back side of the ear, while other areas of the transition portion 114 are mainly used to make the elastic portion 112 and the battery portion 113 smooth as quickly as possible, thereby increasing the symmetry of the hook portion 11 in appearance.

[0093] As is known to all, in the fields of medicine and anatomy, three basic planes of the human body can be defined: the sagittal plane, the coronal plane, and the horizontal plane, as well as three basic axes: the sagittal axis, the coronal axis, and the vertical axis. Among them, the sagittal plane refers to a plane perpendicular to the ground along the front-back direction of the body, which divides the human body into left and right parts; the coronal plane refers to a plane perpendicular to the ground along the left-right direction of the body, which divides the human body into front and back parts; the horizontal plane refers to a plane parallel to the ground along the up-down direction of the body, which divides the human body into upper and lower parts. Accordingly, the sagittal axis refers to an axis perpendicular to the coronal plane along the front-back direction of the body, the coronal axis refers to an axis perpendicular to the sagittal plane along the left-right direction of the body, and the vertical axis refers to an axis perpendicular to the horizontal plane along the up-down direction of the body.

[0094] Based on the above related descriptions, the weight of the earphone 10 and its distribution will affect the wearing stability to a certain extent. For the hook portion 11, its weight can be mainly concentrated in the battery portion 113. In some embodiments, the weight ratio between the total weight of the holding portion 13 and the total weight of the battery portion 113 can be less than or equal to 4. Combining Figure 17 , in the wearing state, and observing from the side of the holding portion 13 facing away from the ear, the battery portion 113 can be at least partially located on the side of the first reference plane (denoted as RP1) facing the user's front, where the first reference plane passes through the contact point (denoted as CP0) between the holding portion 13 and the ear and is parallel to the above-mentioned coronal plane. Thus, it is beneficial to reduce the moment of the center of gravity of the battery portion 113 relative to, for example, the upper ear root, so as to avoid the battery portion 113 flipping due to excessive self-weight and / or excessive moment during the wearing state, thereby increasing the wearing stability. Further, the battery portion 113 can also intersect with a second reference plane (denoted as RP2), where the second reference plane passes through the first position point (denoted as CP1) of the elastic portion 112 closest to the user's head along the above-mentioned vertical axis and is parallel to the above-mentioned coronal plane. Further still, the inner edges of the hook portion 11 and the connecting portion 12 facing the ear have a second position point (denoted as CP2) that is farthest from the contact point between the holding portion 13 and the ear. The battery portion 113 can further intersect with a third reference plane (denoted as RP3), where the third reference plane passes through the second position point and is parallel to the above-mentioned coronal plane. Among them, the second position point can fall on the connecting portion 12 or at the boundary between the hook portion 11 and the connecting portion 12, which will be described exemplarily later. Thus, it is beneficial to make the center of gravity of the battery portion 113 and the center of gravity of the holding portion 13 on the same side of the aforementioned first reference plane, thereby increasing the wearing stability.

[0095] For the convenience of description, and combining Figure 16 , the holding portion 13 can have a thickness direction, a length direction, and a height direction that are perpendicular to each other, and can be respectively marked as "X", "Y", and "Z" in sequence. Among them, the aforementioned thickness direction is defined as the direction in which the holding portion 13 approaches or moves away from the ear in the wearing state, the aforementioned length direction is defined as the direction in which the holding portion 13 approaches or moves away from the user's front in the wearing state, and the aforementioned height direction is defined as the direction in which the holding portion 13 approaches or moves away from the user's head in the wearing state. In the wearing state, the aforementioned height direction can be parallel to the above-mentioned vertical axis, and the aforementioned thickness direction and the aforementioned length direction can be parallel to the above-mentioned horizontal plane.

[0096] In some embodiments, for example Figures 16 to 18, the orthographic projection of the section of the hook portion 11 close to the connecting portion 12 on a reference plane (such as the plane where YZ is located) perpendicular to the above-mentioned thickness direction may partially coincide with the orthographic projection of the holding portion 13 on the foregoing reference plane. Among them, the section of the hook portion 11 close to the connecting portion 12 may be either an elastic portion 112 with a much greater elastic deformation ability than the battery portion 113, or a rigid structure located between the battery portion 113 and the connecting portion 12 and having an elastic deformation ability not much different from that of the battery portion 113. In this way, not only can the holding portion 13 and the hook portion 11 elastically clamp the ear from the front side and the rear side of the ear, but the clamping force is mainly compressive stress, thereby increasing the wearing stability and comfort. In addition, it is beneficial for the center of gravity of the battery portion 113 to be close to the user's face, thereby increasing the wearing stability. Of course, in some other embodiments, such as Figure 4 and Figure 5 the earphones shown, and for another example Figure 9 and Figure 10 the orthographic projection of the hook portion 11 on a reference plane perpendicular to the above-mentioned thickness direction and the orthographic projection of the holding portion 13 on the foregoing reference plane may also be offset from each other.

[0097] Exemplarily, and in combination with Figure 16 and Figure 17 , the orthographic projection of the elastic portion 112 on the above-mentioned reference plane and the orthographic projection of the holding portion 13 on the above-mentioned reference plane may partially coincide, and the orthographic projection of the battery portion 113 on the above-mentioned reference plane and the orthographic projection of the holding portion 13 on the above-mentioned reference plane may be offset from each other. In this way, it is beneficial for the holding portion 13 and the hook portion 11 to elastically clamp the ear from the front and rear directions.

[0098] Further, the radius of curvature of the edge of the elastic part 112 and the transition part 114 facing the ear side in the positive projection on the above reference plane can gradually increase first and then gradually decrease in the direction from the connecting part 12 to the hook part 11 away from the battery part 113. Among them, the fact that the radius of curvature of the aforementioned edge gradually increases first enables the hook part 11 to better fit the contour shape of the rear side of the ear; then gradually decreasing enables the bending degree of the end of the hook part 11 close to the battery part 113 to become larger, so that the battery part 113 approaches the holding part 13, which is beneficial for the hook part 11 to hook the rear side of the ear to increase the wearing stability. Further, the radius of curvature of the aforementioned edge can gradually increase first and then gradually decrease in a continuously changing manner, or can gradually increase first and then gradually decrease in a segmented changing manner. Of course, the two methods can also be combined. For example: the aforementioned edge includes multiple sections, each section has a radius of curvature, and in the direction from the connecting part 12 to the battery part 113, the radii of curvature of the multiple sections can gradually increase first and then gradually decrease, which can also be called a stepped change. Among them, in order to increase the wearing stability, the section with the largest radius of curvature among the multiple sections can partially overlap with the positive projection of the holding part 13 on the above reference plane.

[0099] Exemplarily, the edge of the elastic part 112 and the transition part 114 on the positive projection on the above reference plane facing the ear side may have a first section (denoted as 11A). The starting point (denoted as CP3) of the first section is the connection point between the elastic part 112 and the connecting part 12, and the end point (for example, CP1) is the highest point of the elastic part in the above height direction in the wearing state. Among them, the radius of curvature of the first section may be between 8 mm and 10 mm. The starting point of the first section may coincide with the second position point or may be farther from the connecting part 12 than the second position point, which will be exemplarily described later. Further, the aforementioned edge of the elastic part 112 and the transition part 114 may also have a second section (denoted as 11B). The starting point of the second section is the end point of the first section, and the distance between the end point (denoted as CP4) of the second section and the aforementioned highest point in the above length direction may be between 8 mm and 11 mm, and the distance between the end point of the second section and the aforementioned highest point in the above height direction may be between 7 mm and 10 mm. Among them, the radius of curvature of the second section may be between 9 mm and 12 mm. Further, the aforementioned edge of the elastic part 112 and the transition part 114 may also have a third section (denoted as 11C). The starting point of the third section is the end point of the second section, and the distance between the end point (denoted as CP5) of the third section and the aforementioned highest point in the above length direction may be between 9 mm and 12 mm, and the distance between the end point of the third section and the aforementioned highest point in the above height direction may be between 19 mm and 21 mm. Among them, the radius of curvature of the third section may be between 29 mm and 36 mm. Further, the aforementioned edge of the elastic part 112 and the transition part 114 may also have a fourth section (denoted as 11D). The starting point of the fourth section is the end point of the third section, and the distance between the end point (denoted as CP6) of the fourth section and the aforementioned highest point in the above length direction may be between 7 mm and 10 mm, and the distance between the end point of the fourth section and the aforementioned highest point in the above height direction may be between 25 mm and 32 mm. Among them, the radius of curvature of the fourth section may be between 19 mm and 25 mm. Further, the aforementioned edge of the elastic part 112 and the transition part 114 may also have a fifth section (denoted as 11E). The starting point of the fifth section is the end point of the fourth section, and the distance between the end point (denoted as CP7) of the fifth section and the aforementioned highest point in the above length direction may be less than or equal to 2 mm, and the distance between the end point of the fifth section and the aforementioned highest point in the above height direction may be between 30 mm and 38 mm. Among them, the radius of curvature of the fifth section may be between 9 mm and 13 mm. At this time, the aforementioned profiling depression may be provided on the fifth section, and the radius of curvature of the aforementioned profiling depression may also be smaller than the radius of curvature of the fourth section.

[0100] It should be noted that: the end point of the second section, which is also the starting point of the third section, can be an intersection point between the positive projection of the elastic part 112 on the above-mentioned reference plane and the upper edge of the holding part 13; similarly, the end point of the third section, which is also the starting point of the fourth section, can be another intersection point between the positive projection of the elastic part 112 on the above-mentioned reference plane and the lower edge of the holding part 13. At this time, the positive projection of the third section on the above-mentioned reference plane can all fall on the holding part 13. Further, in combination with Figure 28 , the boundary line between the elastic part 112 and the transition part 114 can be located in the fourth section. Correspondingly, the starting point of the section of the hook part 11 close to the connecting part 12 can be the boundary line between the hook part 11 and the connecting part 12, and the end point can be another intersection point between the positive projection of the elastic part 112 on the above-mentioned reference plane and the lower edge of the holding part 13.

[0101] In combination with Figure 19 , the hook part 11 can include an elastic metal wire 115, a battery compartment 1161 and a wire 117. One end of the elastic metal wire 115 is connected to the connecting part 12, and the other end is connected to the battery compartment 1161. The wire 117 can extend from the battery compartment 1161 to the connecting part 12 and the holding part 13 along with the elastic metal wire 115. Among them, the elastic metal wire 115 enables the hook part 11 to have a certain elastic deformation ability. The battery compartment 1161 is at least used for arranging the battery 16, and the wire 117 is at least used to realize the electrical connection between the battery compartment 1161 and the electronic components in the holding part 13. Further, the hook part 11 can also include an elastic coating body 118, such as silica gel. The elastic coating body 118 at least coats the elastic metal wire 115 and the wire 117 to improve the appearance quality and the wearing comfort. Among them, the cross-sectional area of the battery compartment 1161 can be larger than the sum of the cross-sectional areas of the elastic part 112 formed by the elastic metal wire 115 and the elastic coating body 118. Preferably, it can also be larger than the sum of the cross-sectional areas of the elastic metal wire 115, the wire 117 and the elastic coating body 118.

[0102] Further, the hook portion 11 may further include a transition member 1162 connected to the elastic metal wire 115, such that the elastic metal wire 115 is connected to the battery compartment 1161 through the transition member 1162. For example, the transition member 1162 and the elastic metal wire 115 are formed by an insert molding process. The battery compartment 1161 is provided as a cylindrical structure with one end open, so as to facilitate placing structural members such as the battery 16. The transition member 1162 is then snapped onto the open end of the battery compartment 1161. Of course, in some other embodiments, the transition member 1162 and the battery compartment 1161 may be integrally formed. One end of the battery compartment 1161 away from the transition member 1162 may be provided as an open shape and may be sealed by a cover plate. Wherein, the cross-sectional area of the transition member 1162 may gradually increase along the length of the hook portion 11 and in a direction away from the connecting portion 12. Correspondingly, the elastic coating 118 may also cover the transition member 1162. Wherein, the above-mentioned profiling depression may be formed on the transition member 1162 and be revealed through the elastic coating 118. In other words, the transition member 1162 may be provided with a profiling depression corresponding to the rear profile of the ear on the side facing the ear, and on a reference section arranged along the central axis of the battery compartment 1161, the radius of curvature of the above-mentioned profiling depression may be smaller than the radius of curvature of the other side of the transition member 1162 facing away from the ear, that is, the bending degree of the above-mentioned profiling depression is greater, so as to facilitate the transition portion 114 to avoid the bulge at the rear of the ear.

[0103] Based on the above related description and in combination with Figure 28 , for the hook portion 11, the elastic portion 112 may correspond to the part of the elastic metal wire 115 exposed outside the connecting portion 12 and the transition member 1162, and may mainly include the elastic coating 118 and the elastic metal wire 115 and the wire 117 covered by it; the battery portion 113 may correspond to the part of the battery compartment 1161, and may mainly include the battery compartment 1161 and the battery 16 therein; the transition portion 114 may correspond to the part of the transition member 1162, and may mainly include the elastic coating 118 and the transition member 1162 covered by it. In other words, the length of the elastic portion 112 may be the length of the part of the elastic metal wire 115 exposed outside the connecting portion 12 and the transition member 1162 and covered by the elastic coating 118.

[0104] Further, the earphone 10 may further include a processing circuit and a detecting member 1163 coupled to the processing circuit. The detecting member 1163 is configured to detect whether the hook portion 11 is hung between the rear side of the ear and the head, and the processing circuit is configured to determine whether the earphone 10 is in a wearing state according to the detection result of the detecting member 1163. Among them, the processing circuit may be integrated on the main board 15, and the detecting member 1163 may be any one or a combination of capacitance, inductance, and resistance sensing elements provided on the side of the hook portion 11 (such as the transition member 1162 or the battery compartment 1161) facing the ear. As an example, the detecting member 1163 may be a capacitance sensing element and may be disposed in the profiling recess of the transition member 1162.

[0105] In some application scenarios, when the detecting member 1163 detects that the earphone 10 is in a wearing state, the processing circuit generates a first control signal for controlling the earphone 10 to switch to the playing state; when the detecting member 1163 does not detect that the earphone 10 is in a wearing state, the processing circuit generates a second control signal for controlling the earphone 10 to switch to the pause state. In this way, both the electric energy of the earphone 10 can be saved and the interactivity of the earphone 10 can be increased.

[0106] In some other application scenarios, the earphone 10 may include a first earphone and a second earphone that are arranged in pairs and communicatively connected. For example, the first earphone and the second earphone are respectively worn on the left and right ears of the user, and they are both provided with a detecting member 1163. Among them, the processing circuit determines and selects one of them as the main earphone communicatively connected to an audio source device (such as a mobile phone, a tablet computer, and a smart watch, etc.) according to the detection results of the detecting members 1163 in the first earphone and the second earphone. In this way, when the user uses two earphones at the same time, one of them can be selected as the main earphone to communicatively connect to the audio source device according to the established rules, and the other one is used as the slave earphone to communicatively connect to the main earphone; and when the user only uses one of the two earphones, the used earphone is used as the main earphone.

[0107] Combined with Figure 16 and Figure 18, one side of the holding part 13 facing the ear can include a first area 13A and a second area 13B. The second area 13B can be farther from the connecting part 12 than the first area 13A, that is, the second area 13B can be located at the free end of the holding part 13 away from the connecting part 12. Based on the above relevant description, the orthographic projection of the section of the hook part 11 close to the connecting part 12, such as the elastic part 112, along the above thickness direction can partially overlap with the second area 13B. Further, the first area 13A is provided with a sound outlet hole 1311. The second area 13B can protrude towards the ear compared with the first area 13A and is used to contact the ear to allow the sound outlet hole 1311 to be spaced from the ear in the wearing state. In short, the holding part 13 can be set into a convex hull structure at its free end. Thus, since the movement 14 can generate sound transmitted to the ear through the sound outlet hole 1311, the above convex hull structure can prevent the ear from blocking the sound outlet hole 1311, resulting in the weakening or even inability to output the sound generated by the movement 14. As an example, in the above thickness direction, the maximum protrusion height of the second area 13B relative to the first area 13A can be greater than or equal to 1 mm, and the two areas can have a smooth transition. It should be noted that: if only for the sound outlet hole 1311 to be spaced from the ear in the wearing state, then the second area 13B protruding towards the ear compared with the first area 13A can also be other areas of the holding part 13, such as the area between the sound outlet hole 1311 and the connecting part 12. Further, since the concha and cymba conchae have a certain depth and are communicated with the ear canal, the orthographic projection of the sound outlet hole 1311 on the ear along the above thickness direction can at least partially fall within the concha and / or cymba conchae. As an example, the holding part 13 can be located on the side of the ear canal close to the user's head and contact the antihelix; at this time, the orthographic projection of the sound outlet hole 1311 on the ear along the above thickness direction can at least partially fall within the cymba conchae.

[0108] Further, in combination with Figure 16 and Figure 33, the holding part 13 can form the front cavity 200 and the rear cavity 300 of the earphone 10 on the opposite sides of the movement 14 respectively. The sound outlet hole 1311 communicates with the front cavity 200 and outputs sound to the ear. Among them, the holding part 13 can also be provided with a pressure relief hole 1312 communicating with the rear cavity 300, and the pressure relief hole 1312 is farther from the ear hole than the sound outlet hole 1311. In this way, the pressure relief hole 1312 allows air to freely enter and exit the rear cavity 300, so that the change in air pressure in the front cavity 200 can be blocked by the rear cavity 300 as little as possible, thereby improving the sound quality of the sound output to the ear through the sound outlet hole 1311. Moreover, since the phases of the sounds output to the outside of the earphone 10 through the sound outlet hole 1311 and the pressure relief hole 1312 are opposite, they cancel each other out in the far field away from the ear, that is, a "sound dipole" is formed to reduce sound leakage. Among them, the angle between the line connecting the center of the pressure relief hole 1312 and the center of the sound outlet hole 1313 and the above-mentioned thickness direction can be between 0° and 50°; preferably, the aforementioned angle can be between 0° and 40°. Further, the holding part 13 can also be provided with a sound tuning hole 1313 communicating with the rear cavity 300. The sound tuning hole 1313 can be used to destroy the high-pressure area in the sound field of the rear cavity 300, so that the wavelength of the standing wave in the rear cavity 300 becomes shorter, and then the resonance frequency of the sound output to the outside of the earphone 10 through the pressure relief hole 1312 can be as high as possible, for example, greater than 4 kHz, to reduce sound leakage. Preferably, the sound tuning hole 1313 and the pressure relief hole 1312 can be located on opposite sides of the movement 14 respectively, for example, arranged in opposite directions in the above-mentioned height direction, in order to destroy the high-pressure area in the sound field of the rear cavity 300 to the greatest extent. Among them, the opening direction of the pressure relief hole 1312 can face the user's head top, for example, the angle between its opening direction and the above-mentioned vertical axis is between 0° and 10°, so that the pressure relief hole 1312 is farther from the ear hole than the sound tuning hole 1313, and then it is difficult for the user to hear the sound output to the outside of the earphone 10 through the pressure relief hole 1312, so as to reduce sound leakage. Based on this, the pressure relief hole 1312 can have a first center in the above-mentioned length direction, the sound tuning hole 1313 can have a second center in the above-mentioned length direction, and the second center can be farther from the center of the sound outlet hole 1311 than the first center in the above-mentioned length direction, so as to maximize the distance between the sound tuning hole 1313 and the sound outlet hole 1311, and then weaken the anti-phase cancellation between the sound output to the outside of the earphone 10 through the sound tuning hole 1313 and the sound transmitted to the ear through the sound outlet hole 1311. In other words, the orthographic projection of the sound tuning hole 1313 along the above-mentioned height direction and the orthographic projection of the second area 13B along the above-mentioned thickness direction can at least partially overlap, so that it is as far away from the sound outlet hole 1311 as possible.

[0109] In short, when the user wears the earphone 10, they mainly listen to the sound transmitted to the ear canal through the sound outlet hole 1311. Other acoustic holes such as the pressure relief hole 1312 and the sound tuning hole 1313 are mainly used to make the sound have a bass diving and high - pitched penetration sound quality as much as possible. Therefore, the size of the outlet end of the pressure relief hole 1312 in the above - mentioned length direction (for example Figure 18 shown as L1 in Figure 31 ) and the size of the end of the rear cavity 300 close to the pressure relief hole 1312 in the above - mentioned length direction (for example Figure 31 shown as L2 in Figure 31 ) can have a ratio greater than or equal to 0.9, and their size relationship in the above - mentioned thickness direction can also be the same or similar. Furthermore, it enables the rear cavity 300 to communicate with the outside of the earphone 10 as large an area as possible, so as to minimize the blockage of the rear cavity 300 to the front cavity 200, and can also make the resonance frequency of the sound output to the outside of the earphone 10 through the pressure relief hole 1312 shift as much as possible towards the high - frequency range.

[0110] It should be noted that: due to the fact that structural components such as the movement housing 131 have a certain thickness, the sound outlet hole 1311, the pressure relief hole 1312, the sound tuning hole 1313, etc. opened on the movement housing 131 have a certain depth. Thus, relative to the accommodation cavity formed by the movement housing 131, the holes described in this application have an inlet end close to the aforementioned accommodation cavity and an outlet end far from the aforementioned accommodation cavity. The partition 137 and the communication holes opened thereon mentioned later are similar, and will not be elaborated here.

[0111] Combined with Figures 16 to 18 , in the natural state, and observing from the side of the user's head top when the earphone 10 is in the wearing state, for example, observing along the above - mentioned height direction, the holding part 13 is at least spaced apart from the section of the hook - shaped part 11 close to the connecting part 12 in the above - mentioned thickness direction. The connecting part 12 can be arc - shaped and connected between the holding part 13 and the hook - shaped part 11. In this way, the connecting part 12 can keep the holding part 13 on the front side of the ear and the hook - shaped part 11 on the rear side of the ear at least in the section close to the connecting part 12 spaced from each other in the above - mentioned thickness direction, so as to facilitate the earphone 10 to bypass the upper ear root and its nearby tissues in the wearing state, and thus avoid the earphone 10 overly clamping the helix near the upper ear root and causing discomfort.

[0112] Exemplarily, the connecting portion 12 and the holding portion 13 may be connected along the above-mentioned length direction. Among them, at least a part of the connecting portion 12 may extend away from the free end of the holding portion 13 along both the above-mentioned length direction and the above-mentioned height direction in the direction from one end of the connecting holding portion 13 to the other end of the connecting hook portion 11, so that it protrudes forward toward the user's face side as a whole, so that the height difference between the hook portion 11 and the holding portion 13 in the above-mentioned height direction can be eliminated in a smooth transition manner. Of course, at least a part of the connecting portion 12 may also extend away from the free end of the holding portion 13 along the above-mentioned length direction in the direction from one end of the connecting holding portion 13 to the other end of the connecting hook portion 11. Moreover, the connecting portion 12 itself or the section of the hook portion 11 close to the connecting portion 12 together may also extend away from the free end of the holding portion 13 along the above-mentioned thickness direction, so that the holding portion 13 and the section of the hook portion 11 close to the connecting portion 12 are spaced apart in the above-mentioned thickness direction. In some embodiments, in combination with Figure 23 and Figure 24 , the connecting portion 12 may further extend closer to the free end of the holding portion 13 along the above-mentioned length direction and away from the free end of the holding portion 13 along the above-mentioned height direction at the same time in the direction from one end of the connecting holding portion 13 to the other end of the connecting hook portion 11, that is, the connecting portion 12 itself forms a circuitous extension structure in three-dimensional space. In some other embodiments, in combination with Figure 28 and Figure 29 , the connecting portion 12 may only extend away from the free end of the holding portion 13 along both the above-mentioned length direction and the above-mentioned height direction at the same time in the direction from one end of the connecting holding portion 13 to the other end of the connecting hook portion 11, that is, form the first half of the circuitous extension structure, and the section of the hook portion 11 close to the connecting portion 12 (such as the elastic portion 112) may continue to extend closer to the free end of the holding portion 13 along the above-mentioned length direction and away from the free end of the holding portion 13 along the above-mentioned height direction in the direction away from the connecting portion 12, that is, form the second half of the circuitous extension structure, and then the two cooperate to form a circuitous extension structure in three-dimensional space. Of course, in some other embodiments, the aforementioned circuitous extension structure may also only have the first half or the second half.

[0113] In some embodiments, the section of the hook portion 11 close to the connecting portion 12 (such as the elastic portion 112), the connecting portion 12, and the edge of the holding portion 13 facing the ear side may be arranged in a circuitous arc shape. Among them, in the reference direction passing through the circuitous inflection point (such as CP2) of the arc and parallel to the above-mentioned length direction, at a position 3 mm away from the circuitous inflection point, the minimum width W1 of the arc along the above-mentioned thickness direction may be between 1 mm and 5 mm.

[0114] In some other embodiments, in the above-mentioned thickness direction, the minimum distance between the section of the hook portion 11 close to the connecting portion 12, such as the elastic portion 112, and the holding portion 13 may be greater than 0 and less than or equal to 5 mm.

[0115] In still some other embodiments, in the above-mentioned thickness direction, the distance W2 between the center (denoted as O0) of the sound outlet hole 1311 and the section of the hook portion 11 close to the connecting portion 12 (such as the elastic portion 112) may be between 3 mm and 6 mm.

[0116] In yet some other embodiments, in the above-mentioned thickness direction, the distance W3 between the second region 13B and the section of the hook portion 11 close to the connecting portion 12 (such as the elastic portion 112) may be between 1 mm and 5 mm.

[0117] Combined Figure 20 with Figure 18 and, the holding portion 13 may include a movement housing 131 connected to the connecting portion 12, and structural components such as a movement 14 and a main board 15 may be fixed in the accommodation space of the movement housing 131. Exemplarily, the movement housing 131 may include a first housing 1314 and a second housing 1315 oppositely arranged in the above-mentioned thickness direction, and the first housing 1314 is closer to the ear than the second housing 1315. Of course, the first housing 1314 and the second housing 1315 may also be oppositely arranged in the vibration direction of the movement 14, and the aforementioned vibration direction may be parallel to the above-mentioned thickness direction. Specifically, the movement 14 may be fixed on the side of the first housing 1314 facing the second housing 1315 to enclose and form a front cavity 200, and the second housing 1315 may be fastened to the first housing 1314 and enclose with the movement 14 to form a rear cavity 300. Correspondingly, the sound outlet hole 1311 may be provided on the first housing 1314, such as on the side facing the ear; the pressure relief hole 1312 and the sound adjustment hole 1313 may be respectively provided on opposite sides of the second housing 1315, such as being oppositely arranged in the above-mentioned height direction. Based on the above relevant description, the ratio between the size of the outlet end of the pressure relief hole 1312 in the above-mentioned length direction and the size of the second housing 1315 in the above-mentioned length direction may be greater than or equal to 0.55; preferably, the aforementioned ratio is between 0.8 and 1, so as to make the rear cavity 300 communicate with the outside of the earphone 10 as large as possible while taking into account the structural strength of the second housing 1315.

[0118] In some embodiments, combined Figure 20, the connecting portion 12 may include a third housing 122 connected to one end of the elastic metal wire 115 away from the battery compartment 1161. For example, the two are formed by metal insert molding process. Wherein, the dimensions of the second housing 1315 and the third housing 122 in the above length direction are both smaller than those of the first housing 1314, and the dimension of the second housing 1315 may be much larger than that of the third housing 122. Thus, the second housing 1315 is buckled with the first housing 1314, and its orthographic projection in the above thickness direction partially overlaps with the first housing 1314, and the third housing 122 is buckled with the portion of the first housing 1314 located outside the orthographic projection of the second housing 1315. In short, the third housing 122 can be buckled with the same side of the second housing 1315 and the first housing 1314, and most of the first housing 1314 serves as the housing of the holding portion 13, and a small part also serves as the housing of the connecting portion 12. In a specific embodiment, the ratio between the maximum dimension of the third housing 122 in the above length direction and the dimension of the second housing 1315 in the above length direction may be less than or equal to 0.4.

[0119] Based on the above related descriptions, and in combination with Figure 23 and Figure 24 , in the natural state, and observing from the side of the user's head when the earphone 10 is in the wearing state, for example, observing along the above height direction, the first housing 1314 and the elastic metal wire 115 are spaced apart in the above thickness direction. The third housing 122 may be arc-shaped and connect the first housing 1314 and the elastic metal wire 115 to allow the holding portion 13 located in front of the ear and the hook portion 11 located behind the ear to be spaced apart from each other in the above thickness direction at least in the section near the connecting portion 12. Further, the third housing 122 may first extend away from the second housing 1315 along both the above length direction and the above height direction in the direction from one end connecting the first housing 1314 to the other end connecting the elastic metal wire 115, and then extend close to the second housing 1315 along the above length direction and away from the second housing 1315 along the above height direction, so as to allow the height difference between the hook portion 11 and the holding portion 13 in the above height direction to be eliminated in a smooth transition manner. At this time, the above second position point may fall on the connecting portion 12, and the starting point of the above first section may be farther from the connecting portion 12 than the second position point. Among them, the part of the first housing 1314 that also serves as the housing of the connecting portion 12 may have the same or similar change trend as the third housing 122. Thus, the connecting portion 12 itself can form a circuitously extending structure in three-dimensional space. For this reason, in combination with Figure 24 , there is a parting line (denoted as PL1) between the third housing 122 and the first housing 1314. The two are molded separately and then buckled together to improve the problem that it is difficult to demold the housing of the connecting portion 12 due to its circuitously extending structure in three-dimensional space, thereby increasing production efficiency and reducing production costs.

[0120] In some embodiments, in combination Figure 27 , the third shell 122 is integrally formed with the first shell 1314, and a connector is formed. Further, the connecting portion 12 may also include a connector 123, one end of the connector 123 may be connected to the hook portion 11, and the other end may be plugged and fixed in the connector, thereby realizing the connection between the hook portion 11 and the connecting portion 12. Specifically, one end of the connector 123 away from the third shell 122 may be connected to the other end of the elastic metal wire 115 away from the battery compartment 1161, for example, they are formed by a metal insert injection molding process. Further, the connecting portion 12 may also include a locking member 124, and the portion of the connector 123 inserted into the third shell 122 may be locked with the third shell 122 by the locking member 124, which is convenient for assembly and can increase the reliability of assembly. Among them, the locking member 1224 may be a wedge arranged in a columnar or sheet shape.

[0121] Based on the above description, combined with Figure 28 and Figure 29 , the third shell 122 can extend away from the second shell 1315 in the above-mentioned length direction and the above-mentioned height direction in the direction from one end connected to the first shell 1314 to the other end connected to the connector 123, and the section of the elastic wire 115 exposed to the connector 123 and close to the connector 123 can further approach the second shell 1315 in the above-mentioned length direction in the direction away from the connector 123 and extend away from the second shell 1315 in the above-mentioned height direction. Correspondingly, the third shell 122 can also extend away from the second shell 1315 in the above-mentioned thickness direction at the same time, and the section of the elastic wire 115 exposed to the connector 123 and close to the connector 123 can continue to extend away from the second shell 1315 in the above-mentioned thickness direction. At this time, the above-mentioned second position point can fall on the boundary between the hook-shaped portion 11 and the connecting portion 12, and the starting point of the above-mentioned first section can coincide with the above-mentioned second position point. The first shell 1314 that also serves as the shell of the connection part 12 and the part of the connector 123 exposed outside the third shell 122 can have the same or similar variation trend as the third shell 122. In this way, the connection part 12 is allowed to form only the front half of the above-mentioned winding extension structure, while the hook-shaped part 11 continues to form the rear half of the winding extension structure, thereby allowing the two to cooperate to form a winding extension structure in three-dimensional space. Figure 28 There is a parting line (denoted as PL2) between the connector 123 and the third shell 122 and the first shell 1314. The two are molded separately and then plugged in to improve the problem that the shell of the connecting part 12 is difficult to demold due to its structure of tortuous extension in three-dimensional space, thereby increasing production efficiency and reducing production costs.

[0122] It should be noted that: The housing of the connecting part 12 and the holding part 13 can also be divided in other ways. For example, the housing of the holding part 13 is divided into two housings with substantially equal orthographic projection areas along the above-mentioned thickness direction, and the housing of the connecting part 12 is divided into two or only one along the above-mentioned circuitous inflection point, and the other is made up of the elastic metal wire 115, and then the corresponding assembly is carried out between the housings.

[0123] Based on the above relevant descriptions and combined with Figure 20 and Figure 18 , since the holding part 13 needs to contact the front side of the ear, especially the free end of the holding part 13 also needs to form a contact point (such as CP0) with, for example, the antihelix of the ear. Based on this, a flexible coating structure 132 can be provided on the side of the movement housing 131 facing the ear, and at least the sound hole 1311 is avoided. For example, the flexible coating structure 132 is provided with a through hole corresponding to the sound hole 1311. Among them, the Shore hardness of the flexible coating structure 132 is less than the Shore hardness of the movement housing 131, so that the holding part 13 contacts the ear through the flexible coating structure 132, that is, the flexible coating structure 132 elastically supports between the movement housing 131 and the ear, thereby improving the wearing comfort. Further, based on the division and splicing method of the housings of the connecting part 12 and the holding part 13, in order to improve the appearance quality of the earphone 10, the flexible coating structure 132 can be directly attached to the first housing 1314, the third housing 122, etc. by an injection molding process. Of course, it can also be coated by an adhesive bonding method. Among them, since the hook part 11 can also be provided with an elastic coating body 118, the elastic coating body 118 and the flexible coating structure 132 can be formed by an injection molding process at one time. Of course, they can also be formed separately by two injection molding processes; the materials of the two can be the same or different. Based on this, without special instructions, this application mainly examines the part of the flexible coating structure 132 and the elastic coating body 118 that contacts the user's skin.

[0124] In some embodiments, the flexible covering structure 132 may be at least partially disposed on the side of the holding portion 13 away from the connecting portion 12 and facing the ear, that is, the second region 13B. Correspondingly, the orthographic projection of the elastic portion 112 on the above reference plane (such as the plane where YZ is located) and the orthographic projection of the flexible covering structure 132 on the above reference plane may partially overlap. Further, the thickness of the flexible covering structure 132 can be designed differently. For example, the flexible covering structure 132 corresponding to the second region 13B is relatively thicker, so that the free end of the holding portion 13 can protrude toward the ear and has good softness. Of course, if only the second region 13B protrudes toward the ear compared to the first region 13A, the thickness of the first housing 1314 on the side facing the ear can also be designed differently. Based on this, the first housing 1314 may also include a first region and a second region, which respectively correspond one-to-one to the first region 13A and the second region 13B on the side of the holding portion 13 facing the ear.

[0125] Further, on the side of the flexible covering structure 132 facing the movement housing 131, at least one blind hole 1321 spaced apart from each other may be recessed. The blind holes 1321 may mainly be used to provide a deformation space for the flexible covering structure 132, so as to allow the flexible covering structure 132 to generate more deformations under pressure in the wearing state, thereby further improving the wearing comfort. In some embodiments, the number of the blind holes 1321 may be multiple, such as at least two, and they may be spaced apart from each other to form ribs to support their own structures, so as to have both elastic deformation amount and structural strength. Of course, in some other embodiments, the number of the blind holes 1321 may also be only one. At this time, by controlling parameters such as the elastic modulus, thickness of the flexible covering structure 132, and the size of the blind hole 1321, it can also have both elastic deformation amount and structural strength. Among them, in order to enable the flexible covering structure 132 to have the blind holes 1321, the movement housing 131, specifically the part of the first housing 1314 corresponding to the second region 13B, may be provided with through holes 13141 corresponding to and communicating with the blind holes 1321 one by one. The through holes 13141 are used for inserting the forming core of the flexible covering structure 132. At this time, the multiple through holes 13141 may make the part of the first housing 1314 corresponding to the second region 13B be arranged in a honeycomb or grid shape, so as to balance the structural strength of the first housing 1314 in this region and the support for the flexible covering structure 132. Further, on the outer side of the first housing 1314, a protrusion surrounding the through holes 13141 may be provided along the honeycomb or grid structure. The protrusion may be embedded in the flexible covering structure 132; and / or, the flexible covering structure 132 may be partially inserted into the through holes 13141 to increase the bonding area between the flexible covering structure 132 and the first housing 1314 in the second region 13B, thereby increasing the bonding strength between the two. Based on this, the corresponding through holes 13141 may be left in the first housing 1314 during the forming process, and the forming core of the flexible covering structure 132 may be inserted into the through holes 13141 after the forming is completed. The forming core may protrude from the first housing 1314, and the maximum protrusion height may depend on the actual requirements of the convex structure; then, the flexible covering structure 132 may be directly formed on the first housing 1314 by an injection molding process, and then the forming core may be withdrawn. Correspondingly, the holding part 13 may further include a cover plate 1316 disposed in the movement housing 131. For example, the cover plate 1316 is fixedly disposed on the inner side of the first housing 1314 facing away from the flexible covering structure 132 to close the through holes 13141, thereby allowing the first housing 1314 and the cover plate 1316 to enclose a front cavity 200 with the movement 14. Among them, the cover plate 1316 may be supported on the honeycomb or grid structure of the first housing 1314.

[0126] Exemplarily, a first flange 13142 may be provided on the inner wall surface of the first housing 1314 facing away from the flexible covering structure 132, and a second flange 13161 may be provided on the inner wall surface of the cover plate 1316 facing away from the flexible covering structure 132. The two ends of the second flange 13161 and the two ends of the first flange 13142 may extend oppositely to be spliced to form an annular flange. At this time, the movement 14 may be abutted against the annular flange to form a front cavity 200. Among them, the first housing 1314 may be provided with a sunk groove in the second region 13B, and the cover plate 1316 may be embedded in the sunk groove to allow the inner wall surface of the cover plate 1316 to be flush with the inner wall surface of the first housing 1314 facing away from the flexible covering structure 132, so as to make the inner cavity surface of the front cavity 200 as flat as possible. Further, a glue application groove may be provided on the inner wall surface of the first housing 1314 facing away from the flexible covering structure 132. The glue application groove may be located at the edge of the aforementioned sunk groove and surround a plurality of through holes 13141. The cover plate 1316 may be adhesively bonded to the first housing 1314 through the glue in the glue application groove. In short, both the first flange 13142 and the glue application groove are provided on the inner side of the first housing 1314 facing away from the flexible covering structure 132, but the former may mainly correspond to the first region 13A and the latter may mainly correspond to the second region 13B.

[0127] It should be noted that: in other embodiments such as those in which the flexible covering structure 132 does not have the blind hole 1321, or in other embodiments such as those in which the flexible covering structure 132 is first formed separately and then bonded to the movement housing 131, for example, the first housing 1314 may not need to be provided with the through holes 13141, and the corresponding cover plate 1316 may also not need to be provided. At this time, the first flange 13142 may be a complete annular flange, and the movement 14 abutted against the annular flange can form the front cavity 200.

[0128] In some other embodiments, in combination with Figure 27, the flexible covering structure 132 may include an inner flexible body 1322 disposed on the movement housing 131 and an outer flexible body 1323 that at least covers the inner flexible body 1322. The inner flexible body 1322 may be disposed in the second region 13B, and the outer flexible body 1323 may cover the inner flexible body 1322, the first housing 1314, the third housing 122, etc. At this time, the flexible covering structure 132 contacts the ear through the outer flexible body 1323. In short, the flexible covering structure 132 may also be arranged as a double-layer structure to facilitate adjusting the thickness and softness of the portion of the flexible covering structure 132 corresponding to the second region 13B. Accordingly, the orthographic projection of the elastic portion 112 on the above-mentioned reference plane (such as the plane where YZ is located) and the orthographic projection of the inner flexible body 1322 on the above-mentioned reference plane may partially overlap. Similarly, the sound outlet hole 1311 may be located between the inner flexible body 1322 and the connecting portion 12. Further, the inner flexible body 1322 may also protrude toward the ear, that is, protrude from the movement housing 131 (specifically the first housing 1314), so as to facilitate the flexible covering structure 132 to form the above-mentioned convex structure.

[0129] As an example, the blind hole 1321 may be provided in the inner flexible body 1322, and its function and forming method may be the same or similar to those described above, and will not be elaborated here. The number of the blind holes 1321 may be multiple, so that the inner flexible body 1322 has bone positions arranged in a honeycomb shape or a grid shape, or multiple bone positions arranged at intervals of each other. Of course, in some other embodiments, the aforementioned blind hole 1321 may further penetrate through the inner flexible body 1322 to be provided as a through hole. Similarly, the gap between the aforementioned bone positions, that is, the blind hole 1321, is used to provide a deformation space for the flexible covering structure 132. In a specific embodiment, the materials of the inner flexible body 1322 and the outer flexible body 1323 may be 0-degree silica gel.

[0130] Exemplarily, the Shore hardness of the inner flexible body 1322 can be less than that of the outer flexible body 1323, so that the flexible coating structure 132 can be softer corresponding to the second region 13B. Among them, a blind hole 1321 can be recessed on the surface of the outer flexible body 1323 facing the movement housing 131, and the inner flexible body 1322 can be arranged in the blind hole 1321 and in contact with the outer flexible body 1323. In other words, the blind hole 1321 can be provided in the outer flexible body 1323 to facilitate the accommodation of the softer inner flexible body 1322. Specifically, a through hole 13141 can be provided in the portion of the first housing 1314 corresponding to the second region 13B, and the through hole 13141 is used for inserting the forming core of the outer flexible body 1323. At this time, the outer flexible body 1323 can be formed on the first housing 1314 by an injection molding process, and the forming core can be withdrawn after the outer flexible body 1323 is formed, so that the outer flexible body 1323 forms the corresponding blind hole 1321, and then a receiving area is formed. The inner flexible body 1322 can be arranged in the blind hole 1321 through the through hole 13141, that is, arranged in this receiving area, and then the through hole 13141 can be closed by the cover plate 1316. One side of the cover plate 1316 facing the inner flexible body 1322 can be partially embedded in the through hole 13141 to increase the sealing performance of the aforementioned receiving area. Further, the number of the blind holes 1321 can be one, and the number of the through holes 13141 can also be one. At this time, when the opening area of the through hole 13141 is relatively large, the cover plate 1316 can extend to overlap with the first housing 1314 in the first region 13A to increase the supporting area of the first housing 1314 for the cover plate 1316. Among them, the cover plate 1316 can be provided with a communication hole 13162 for communicating the sound outlet hole 1311 with the front cavity 200 to avoid blocking the sound outlet hole 1311. In a specific embodiment, the material of the outer flexible body 1323 can be silicone rubber with a Shore hardness of 30-50 degrees, and the material of the inner flexible body 1322 can be silicone rubber with a Shore hardness of 0 degree, and can be formed in the aforementioned receiving area by a potting process. In another specific embodiment, the material of the outer flexible body 1323 can be silicone rubber with a Shore hardness of 30-50 degrees, and the material of the inner flexible body 1322 can be silicone rubber with a Shore hardness of 0-10 degrees, and can be pre-formed into a block and filled in the aforementioned receiving area. Of course, when the inner flexible body 1322 can withstand the impact force during the forming process of the outer flexible body 1323, the first housing 1314 may not need to be provided with the through hole 13141, and the corresponding cover plate 1316 may not need to be provided either.

[0131] Based on the above detailed description, structural components such as the first housing 1314, the outer flexible body 1323, the inner flexible body 1322, and the cover plate 1316 can form a housing assembly, that is, modular, which is convenient for assembly.

[0132] Combined with Figure 16, the earphone 10 may further include a microphone 125 and a microphone 133 disposed on the holding portion 13 and / or the connecting portion 12, and the two microphones 125, 133 may be electrically connected to the main board 15. Among them, the distance between the microphone 125 and the microphone 133 in the above-mentioned length direction may be greater than the distance between the microphone 125 and the microphone 133 in the above-mentioned height direction. In this way, when the size of the earphone 10 is relatively determined, the distance between the two microphones 125, 133 can be made as large as possible, which can not only avoid interference between the two microphones 125, 133, but also increase the sound pickup effect and / or noise reduction effect of the earphone 10. Further, the connection line between the orthographic projection of the microphone 125 on the above-mentioned reference plane (for example, the plane where YZ is located) and the orthographic projection of the microphone 133 on the above-mentioned reference plane may pass through the orthographic projection of the movement 14 on the above-mentioned reference plane. In other words, if the movement 14 is arranged in a rectangle on the above-mentioned reference plane, then the two microphones 125, 133 may be generally arranged along the diagonal of the movement 14.

[0133] In some embodiments, the microphone 125 may be disposed on the connecting portion 12, and the microphone 133 may be disposed at the free end of the holding portion 13 away from the connecting portion 12. At this time, the microphone 125 may be closer to the user's mouth than the microphone 133, so that it is mainly used to pick up the user's voice. Among them, the earphone 10 may further include a processing circuit, and the processing circuit may be integrated on the main board 15, and may use the microphone 125 as the main microphone and the microphone 133 as the auxiliary microphone, and perform noise reduction processing on the sound signal collected by the main microphone through the sound signal collected by the auxiliary microphone, thereby increasing the sound pickup effect. Of course, at least one of the two microphones 125, 133 may also be used to perform noise reduction processing on the sound output by the earphone 10 to the ear, or only one microphone may be provided for sound pickup or noise reduction.

[0134] Exemplarily, the microphone 125 may be disposed between the third housing 122 and the first housing 1314, and the microphone 133 may be disposed between the second housing 1315 and the first housing 1314. Among them, through holes for the microphone to collect sound may be respectively provided on the sides of the third housing 122 and the second housing 1315 facing away from the first housing 1314.

[0135] In some other embodiments, the earphone 10 may further include a stick microphone 134 detachably connected to the free end (i.e., the battery portion 113) of the holding portion 13 or the hook portion 11 away from the connecting portion 12. A microphone 1341 electrically connected to the main board 15 may be provided at the free end of the stick microphone 134. In this way, compared with the microphones 125 and 133, the stick microphone 134 can make the microphone 1341 closer to the user's mouth, which is beneficial to improving the sound pickup effect. Herein, the present application takes the detachable connection between the stick microphone 134 and the holding portion 13 as an example for illustrative purposes. For example, the main rod 1342 of the stick microphone 134 is detachably connected to the second housing 1315 by means of a buckle or magnetism, or the main rod 1342 is detachably connected to the second housing 1315 by means of a type-C plug-in connection to shorten the wiring distance between the microphone 1341 and the main board 15.

[0136] Further, in addition to the microphone 1341 on the stick microphone 134, the earphone 10 may further be provided with other microphones, such as the microphone 125 and / or the microphone 133. Among them, when the stick microphone 134 is connected to the holding portion 13, the processing circuit may use the microphone 1341 as the main microphone and at least one of the microphones 133 and 125 as the auxiliary microphone, and may perform noise reduction processing on the sound signal collected by the main microphone through the sound signal collected by the auxiliary microphone, thereby improving the sound pickup effect. Correspondingly, when the stick microphone 134 is separated from the holding portion 13, the processing circuit may switch the microphones 133 and 125 to the enabled state, and use one of the microphones 133 and 125 as the main microphone and the other as the auxiliary microphone. Of course, the processing circuit may also switch at least one of the microphones 133 and 125 to the disabled state when the stick microphone 134 is connected to the holding portion 13 to save electric energy while taking into account sound pickup and / or noise reduction.

[0137] Combined with Figure 16 and Figure 17, the earphone 10 may further include a first charging electrode 126 disposed on the holding portion 13 or the connecting portion 12 and a second charging electrode 1164 disposed on the hook portion 11. One of the first charging electrode 126 and the second charging electrode 1164 serves as the charging positive electrode, and the other serves as the charging negative electrode. Herein, this application takes the first charging electrode 126 as the charging positive electrode and the second charging electrode 1164 as the charging negative electrode as an example for exemplary illustration. In this way, the earphone 10 can not only be charged through the two charging electrodes, but also greatly increase the shortest distance between the two charging electrodes, which is beneficial to preventing short circuits caused by sweat, water droplets, dust, etc. between the charging electrodes. Of course, when the short-circuit prevention is satisfied, the two charging electrodes can also be both disposed on one of the hook portion 11, the connecting portion 12, and the holding portion 13. Further, the two charging electrodes can be arranged to be invisible in the wearing state, for example, both facing the user's skin, so as to take into account the appearance quality of the earphone 10.

[0138] Exemplarily, the first charging electrode 126 can be disposed on the connecting portion 12, and the second charging electrode 1164 can be disposed on the battery portion 116. Specifically, the first charging electrode 126 can be at least partially disposed on the periphery of the second housing 1315, for example, disposed between the third housing 122 and the first housing 1314. Correspondingly, the second charging electrode 1164 can be disposed in the battery compartment 1161, for example, at the bottom of the battery compartment 1161 away from its open end. Among them, the first charging electrode 126 can be arranged in a column shape, and the second charging electrode 1164 can be arranged in a strip shape, and its length direction can extend along the circumferential direction of the battery compartment 1161. Further, the first housing 1314 and the battery compartment 1161 can be respectively provided with through holes allowing the charging electrodes to be exposed, so as to facilitate the contact between the charging electrodes and the output electrodes on the charging case. In this way, compared with the columnar electrode, the strip electrode can increase the reliability of the charging electrode because of its larger contact area with the aforementioned output electrode.

[0139] It should be noted that: a plurality of first charging electrodes 126 can be spaced apart on the connecting portion 12, for example, two, so that the other one can still be used after one of them fails. Further, a magnetic attracting member such as a magnet can be respectively provided near the two charging electrodes to allow the earphone 10 to be in good contact with the output electrodes on the battery case by magnetic attraction. Among them, for the charging case, the relative positions of the output electrodes thereon can be adjusted according to the changes of the charging electrodes on the earphone 10.

[0140] Combined with Figure 21 , since the second housing 1315 is more away from the ear than the first housing 1314, interaction components such as physical buttons, display screens, and touch circuit boards can be provided on the second housing 1315 to facilitate the interaction between the user and the earphone 10.

[0141] Exemplarily, the second housing 1315 may include a bottom wall 13151 disposed opposite to the first housing 1314 and a side wall 13152 connected to the bottom wall 13151, and the side wall 13152 extends towards the first housing 1314. Among them, a flexible touch circuit board 135 electrically connected to the main board 15 is provided on one side of the bottom wall 13151 facing the first housing 1314. The flexible touch circuit board 135 may be based on any one of capacitive, resistive, pressure-sensitive, etc., and is not limited herein. In this way, the interaction of the earphone 10 can be realized without setting additional through holes on the movement housing 131, thereby improving the waterproof and dustproof performance. Specifically, the flexible touch circuit board 135 may include a touch portion 1351 for receiving touch operations and an electrical connection portion 1352 for connecting to the main board 15. For example, the flexible touch circuit board 135 may be fastened to the main board 15 by means of a BTB connector. Among them, the area of the touch portion 1351 relative to the bottom wall 13151 may be greater than or equal to 70%. Based on the above related description, the side of the side wall 13152 close to the third housing 122 may be provided with an open end, so as to facilitate the splicing of the second housing 1315 and the third housing 122. Among them, the pressure relief hole 1312 and the sound adjustment hole 1313 may be provided on the side wall 13152 and may be located on opposite sides of the open end respectively.

[0142] Furthermore, the bottom wall 13151 may be provided with a sinking groove 13153, and the touch portion 1351 may be attached to the bottom of the sinking groove 13153. In this way, the second housing 1315 is locally thinned to increase the sensitivity of the flexible touch circuit board 135. Not only that, the main board 15 may also be connected to the second housing 1315, and the flexible touch circuit board 135 may be pressed against the bottom wall 13151 through an elastic gasket 1353, so that the touch portion 1351 is in close contact with the bottom wall 13151 and the touch portion 1351 is prevented from being damaged. Among them, the depth of the sinking groove 13153 may be greater than or equal to the thickness of the touch portion 1351 and less than the sum of the thicknesses of the touch portion 1351 and the elastic gasket 1353 to increase the pressing effect.

[0143] In some embodiments, a plurality of hot melt columns 13154 may be provided on the bottom wall 13151, which are located outside the sinking groove 13153 and extend towards the main board 15, for example, three. The connection line of the orthographic projections of at least two of the plurality of hot melt columns 13154 on the bottom wall 13151 may pass through the orthographic projection of the touch portion 1351 on the bottom wall 13151; correspondingly, connection holes corresponding to the hot melt columns 13154 may be provided on the main board 15 to allow the main board 15 to be sleeved and fixed on the hot melt columns 13154 through the connection holes thereon. In short, if the touch portion 1351 is set to be rectangular, then at least two hot melt columns 13154 may be disposed generally along the diagonal of the touch portion. In this way, the uniformity of the force distribution on the main board 15 can be increased. Of course, in some other embodiments, the hot melt columns 13154 may also be replaced with screws, buckles, etc., which are not limited herein.

[0144] Based on the above related description, the microphone 133 may be directly disposed on the side of the main board 15 facing away from the bottom wall 13151 through the SMT process. Correspondingly, a flange 13155 may be provided on the bottom wall 13151, which is located outside the sinking groove 13153. The flange 13155 extends towards the main board 15 and has a sound pickup hole communicating with the outside of the earphone 10. At this time, the main board 15 may be pressed against the flange 13155 to allow the microphone 133 to collect sound signals through the sound pickup hole. Among them, a silica gel sleeve 13156 may be sleeved on the flange 13155 to allow the main board 15 to be elastically supported on the flange 13155 through the silica gel sleeve 13156. In this way, not only the sealing performance of the sound path of the microphone 133 can be increased, but also the uniformity of the force distribution on the main board 15 can be increased.

[0145] Furthermore, a metal antenna pattern may be provided on the second housing 1315 to serve as a communication antenna of the earphone 10. Correspondingly, antenna contacts 13157 may be provided on the bottom wall 13151, which are located outside the sinking groove 13153 and are electrically connected to the metal antenna pattern. Metal elastic sheets for elastically abutting against the antenna contacts 13157 may be provided on the main board 15. In short, the main board 15 may be in contact with the antenna contacts 13157 through the metal elastic sheets thereon, so as to avoid unnecessary welding, thereby reducing the assembly difficulty and saving the internal space of the movement housing 131.

[0146] In summary, the connection between the main board 15 and the second housing 1315 can not only realize its own fixation, but also realize the pressing of the flexible touch circuit board 135, the sealing of the sound path of the microphone 133, and the electrical connection between the main board 15 and the metal antenna pattern, achieving multiple functions with one action.

[0147] Based on the above related description and combined with Figure 21 and Figure 27, the electronic components disposed on the hook-shaped portion 11 can be electrically connected to the main board 15 through the wire 117, and the electronic components disposed on the connecting portion 12 can be directly electrically connected to the main board 15 through their leads due to their relatively close distance to the main board 15. Among them, the wire 117 can be set as multi-strand, and can include the positive lead and negative lead of the battery 16, the signal wire and shield wire of the detection member 1163, and the negative lead of the second charging electrode 1164; of course, the shield wire of the detection member 1163 can also be multiplexed with the lead of the second charging electrode 1164 into one lead to simplify the wiring. Further, due to the limited size of the main board 15 and the large number of electronic components integrated thereon, the wire 117 or other leads can be first soldered on a flexible circuit board 136, and then the flexible circuit board 136 is snap-connected to the main board 15, which is beneficial to enlarging the size of the pads and the distance between each other, thereby reducing the soldering difficulty and increasing the reliability of soldering.

[0148] Exemplarily, the flexible circuit board 136 can include at least a first connection area 1361 for electrically connecting to the battery 16 and a second connection area 1362 for electrically connecting to the main board 15. Among them, the second connection area 1362 can be disposed along the main surface of the main board 15 to facilitate the snap connection between the flexible circuit board 136 and the main board 15. Further, the first connection area 1361 can be bent laterally toward the main board 15 relative to the second connection area 1362, and can be provided with a plurality of pads, that is, the above-mentioned soldering occurs on the side of the main board 15. Thus, due to the interference of the electronic components on the main surface of the main board 15, the soldering difficulty can be reduced. Moreover, since the flexible circuit board 136 is very thin, and a part of it is bent laterally toward the main board 15, it can also save the internal space of the movement housing 131. Based on the above relevant description, the plurality of pads provided in the first connection area 1361 can include a first pad and a second pad respectively used for soldering connection with the positive lead and negative lead of the battery 16, a third pad and a fourth pad respectively used for soldering connection with the positive lead and negative lead of the charging electrode, and can further include a fifth pad and a sixth pad respectively used for soldering connection with the signal wire and shield wire of the detection member 1163. Among them, since the shield wire of the detection member 1163 can be multiplexed with the lead of the second charging electrode 1164 into one lead, only one of the fourth pad and the sixth pad needs to be provided, which is beneficial to enlarging the size of other pads and the distance between each other.

[0149] Based on the above related description, since the microphone 125 can be disposed at the connection portion 12 such that it is relatively close to the main board 15, the flexible circuit board 136 can further extend to the connection portion 12. Based on this, the flexible circuit board 136 can further include a third connection area 1363 connected to the first connection area 1361. The third connection area 1363 can be bent in a direction away from the main board 15 compared to the first connection area 1361, so as to facilitate the third connection area 1363 to be attached to the first housing 1314 and / or the third housing 122. Among them, the microphone 125 can be disposed on the third connection area 1363 through the SMT process. At this time, the first connection area 1361 and the third connection area 1363 can be respectively perpendicular to the main surface of the main board 15, and the second connection area 1362 can be parallel to the main surface of the main board 15.

[0150] Different from the first connection area 1361, the second connection area 1362 can be buckled with the main board 15 by means of a BTB connector. Based on this, the flexible circuit board 136 can further include a transition area 1364 connecting the first connection area 1361 and the second connection area 1362. The transition area 1364 can be on the same side of the main board 15 as the second connection area 1362. Among them, the length of the transition area 1364 is greater than the minimum distance between the first connection area 1361 and the second connection area 1362, so as to facilitate the buckling of the first connection area 1361 with the main board 15. Exemplarily, the transition area 1364 can be set to a multi-segment bent structure and can be disposed along the main surface of the main board 15.

[0151] Combined with Figure 21 , the movement 14 can include a magnetic circuit system 141 and a coil 142. The coil 142 can extend into the magnetic gap of the magnetic circuit system 141 and can move in the magnetic field formed by the magnetic circuit system 141 when energized. Among them, the magnetic circuit system 141 can include structural members such as permanent magnets, magnetic yokes, and brackets. Its specific structure and connection relationship are well known to those skilled in the art and will not be elaborated here. Further, if the movement 14 is applied to a bone conduction earphone, then the coil 142 can be configured to drive a vibration piece to move; if the movement 14 is applied to an air conduction earphone, then the coil 142 can be configured to drive a diaphragm to move; of course, the coil 142 can also be configured to drive a vibration piece and a diaphragm to move simultaneously. Among them, this application takes the coil 142 driving a diaphragm to move as an example for exemplary illustration. Based on this, the movement 14 can further include a diaphragm 143 connected between the coil 142 and the magnetic circuit system 141. The diaphragm 143 can generate sound transmitted to the ear through the sound outlet hole 1311 during the vibration process.

[0152] Further, the movement 14 may further include a metal shrapnel 144 fixed to the periphery of the magnetic circuit system 141. The metal shrapnel 144 is electrically connected to the coil 142. At this time, the movement 14 is elastically pressed on the main board 15 through the metal shrapnel 144, so that the coil 142 is electrically connected to the contact on the main board 15. In this way, the metal shrapnel 144 is used to replace the solder wire in the related art to avoid unnecessary soldering, thereby reducing the assembly difficulty and eliminating the need to reserve a soldering space, thus saving the internal space of the movement housing 131. The number of the metal shrapnels 144 may be two, and they may be respectively used as the positive lead and the negative lead of the coil 142.

[0153] As an example, in combination with Figure 26 , the metal shrapnel 144 may include a fixing portion 1441 and an elastic contact portion 1442 connected to one end of the fixing portion 1441. The fixing portion 1441 is connected to the magnetic circuit system 141, and the elastic contact portion 1442 extends in a direction away from the magnetic circuit system 141 with respect to the fixing portion 1441. In short, the portion of the metal shrapnel 144 for electrically connecting to the contact on the main board 15 protrudes from the magnetic circuit system 141. Further, the metal shrapnel 144 may further include a limiting portion 1443 connected to the other end of the fixing portion 1441, and the limiting portion 1443 extends on the same side as the elastic contact portion 1442. The elastic contact portion 1442 is further bent and extended toward the limiting portion 1443, and its free end is inserted into the limiting groove of the limiting portion 1443, so that the elastic contact portion 1442 can pre-store an elastic potential energy, thereby increasing the contact goodness between the metal shrapnel 144 and the contact on the main board 15. At this time, the height of the middle portion of the elastic contact portion 1442 with respect to the fixing portion 1441 is greater than the height of the free end of the elastic contact portion 1442 with respect to the fixing portion 1441, so as to facilitate contact with the contact on the main board 15.

[0154] Based on the above relevant descriptions, the magnetic circuit system 141 can be connected to one side of the first housing 1314 facing the second housing 1315, and the main board 15 can be connected to one side of the second housing 1315 facing the first housing 1314. At this time, when the second housing 1315 is buckled with the first housing 1314, the movement 14 can elastically press its metal elastic sheet 144 onto the main board 15, which is simple and reliable with high assembly efficiency. Among them, a metal elastic sheet 144 can be respectively arranged on the opposite two sides of the magnetic circuit system 141 to increase the stability of clamping the movement 14 together with the second housing 1315 and the main board 15 by the first housing 1314. Correspondingly, the diaphragm 143 and the first housing 1314 can enclose a front cavity 200. For example, the magnetic circuit system 141 abuts against the annular flange formed by splicing the second flange 13161 and the first flange 13142 mentioned above; the magnetic circuit system 141 is provided with a through hole communicating the rear cavity 300 with the side of the diaphragm 143 facing away from the front cavity 200. In other words, the movement 14 (specifically, the diaphragm 143) can divide the accommodation cavity formed by the movement housing 131 into the opposite front cavity 200 and rear cavity 300. At this time, the positive projection of the sound outlet hole 1311 along the vibration direction of the movement 14 can at least partially fall on the diaphragm 143. Further, the main board 15 and the movement 14 are stacked in the above-mentioned thickness direction, and the movement 14 is closer to the ear than the main board 15, which can avoid setting a through hole on the main board 15 to communicate the side of the diaphragm 143 facing away from the rear cavity 300 with the front cavity 200, thereby simplifying the structure. Based on this, the ratio of the overlapping area between the positive projection of the movement 14 on the above-mentioned reference plane (such as the plane where YZ is located) and the positive projection of the main board 15 on the above-mentioned reference plane to the larger of the area of the positive projection of the main board 15 on the above-mentioned reference plane and the area of the positive projection of the movement 14 on the above-mentioned reference plane can be between 0.8 and 1. For example, the area of the positive projection of the movement 14 on the above-mentioned reference plane is substantially equal to the area of the positive projection of the main board 15 on the above-mentioned reference plane. Specifically, the absolute value of the difference between the size of the movement 14 in the above-mentioned length direction and the size of the main board 15 in the above-mentioned length direction and the ratio of the larger of the size of the main board 15 in the above-mentioned length direction and the size of the movement 14 in the above-mentioned length direction can be between 0 and 0.2, and the size relationship between the two in the above-mentioned height direction can also be the same or similar. In this way, when the volume of the accommodation cavity formed by the movement housing 131 is certain, the movement 14 can be as large as possible, which is beneficial to increasing the sound loudness of the earphone 10 and broadening the frequency response range of the earphone 10.

[0155] It should be noted that: in combination with Figure 26, although the movement 14 may also have a major axis direction (labeled Y1) and a minor axis direction (labeled Z1) that are orthogonal to each other and perpendicular to the vibration direction of the movement 14 (labeled X1), for ease of description, in the embodiments provided in this application, the aforementioned vibration direction, major axis direction, and minor axis direction may be parallel to the aforementioned thickness direction, major axis direction, and height direction respectively; of course, in some other embodiments, an included angle is also allowed between them. Further, the dimension of the movement 14 in its major axis direction is greater than or equal to the dimension of the movement 14 in its minor axis direction. Exemplarily, the orthographic projection of the movement 14 on a reference plane perpendicular to its vibration direction may be rectangular, and at this time, the aforementioned major axis direction may be the direction where the long side of the aforementioned rectangle is located, and the aforementioned minor axis direction may be the direction where the short side of the aforementioned rectangle is located.

[0156] The inventors of this application have found in long-term research that when a main board 15 is provided on the side of the movement 14 facing away from the front cavity 200, a large number of electronic components of different sizes and shapes provided on the main board 15 will affect the sound quality of the earphone 10. For this reason, in combination with Figure 22 or Figure 32 , the holding part 13 may further include a partition 137 provided in the movement housing 131. The partition 137 is mainly used to separate the movement 14 from the main board 15, and can enclose a rear cavity 300 with the movement 14, that is, an independent sound cavity. Specifically, the partition 137 may be located between the magnetic circuit system 141 and the main board 15, and can enclose a rear cavity 300 with the magnetic circuit system 141. Of course, in some other embodiments, a diaphragm may also be covered on the main board 15 to make the side of the main board 15 facing the movement 14 as flat as possible.

[0157] Exemplarily, the partition 137 may be connected to the movement 14, that is, modularized, for ease of assembly. Specifically, in combination with Figure 25 and Figure 30 , the partition 137 may include a bottom wall 1371 and a side wall 1372 connected to the bottom wall 1371. The bottom wall 1371 is spaced from the magnetic circuit system 141, and the side wall 1372 extends towards the movement 14 and is connected to the movement 14 (specifically, the magnetic circuit system 141) to allow the partition 137 to enclose a rear cavity 300 with the movement 14. Among them, a glue dispensing groove 1373 and a positioning post 1374 cooperating with the magnetic circuit system 141 may also be provided on the side of the partition 137 facing the magnetic circuit system 141 to facilitate the accurate assembly of the partition 137 with the movement 14. Correspondingly, the metal elastic sheet 144 may be located outside the partition 137.

[0158] Based on the above related descriptions, the side wall 1372 may also be provided with communication holes allowing the rear cavity 300 to communicate with the outside of the earphone 10, such as a first communication hole 1375 communicating the pressure relief hole 1312 with the rear cavity 300 and a second communication hole 1376 communicating the sound adjustment hole 1313 with the rear cavity 300. Among them, a seal member that elastically supports and surrounds the communication holes may be further provided between the partition 137 and the movement housing 131 to seal the sound path for the communication between the rear cavity 300 and the outside of the earphone 10.

[0159] In this application, structural components such as the movement housing 131 and the movement 14 may be generally arranged in a cubic structure or a cylindrical structure, which is not limited herein. Among them, this application takes the movement 14 arranged in a cubic structure as an example for exemplary description. Based on this, the dimension of the partition 137 in the above length direction may be greater than or equal to the dimension of the partition 137 in the above height direction. Among them, in combination with Figure 25 , the side wall 1372 may include a first side wall 13721 and a third side wall 13723 spaced from each other in the above length direction and a second side wall 13722 and a fourth side wall 13724 spaced from each other in the above height direction. Further, one of the second side wall 13722 and the fourth side wall 13724 may be provided with the first communication hole 1375, and the other may be provided with the second communication hole 1376. Based on the above related descriptions, the first communication hole 1375 may be provided in the second side wall 13722, and the second communication hole 1376 may be provided in the fourth side wall 13724. It should be noted that: in combination with Figure 30 and Figure 31 , the second side wall 13722 may also be omitted, and the first communication hole 1375 may be directly formed by enclosing the bottom wall 1371, the first side wall 13721, and the third side wall 13723, which will be exemplarily described later.

[0160] Further, the third side wall 13723 can be farther away from the sound outlet hole 1311 than the first side wall 13721, that is, farther away from the connecting portion 12 and closer to the free end of the holding portion 13. Among them, the dimension of the first communication hole 1375 in the above-mentioned length direction can be larger than the dimension of the second communication hole 1376 in the above-mentioned length direction, and their dimensions in the above-mentioned thickness direction can be equal, so as to facilitate adjusting the first communication hole 1375 and the second communication hole 1376 respectively to make the actual area of the effective communication area between the rear cavity 300 and the outside of the earphone 10. Based on this, the first side wall 13721 and the fourth side wall 13724 can be connected by the first arc transition wall 13725 to avoid sharp structures such as right angles and sharp corners on the inner wall surrounding the rear cavity 300, which is conducive to eliminating standing waves. Among them, the first arc transition wall 13725 can be arranged in an arc shape, and the arc radius can be greater than or equal to 2 mm. Similarly, the third side wall 13723 and the fourth side wall 13724 can be connected by the second arc transition wall 13726, and the curvature radius of at least part of the inner wall surface of the first arc transition wall 13725 can be greater than the curvature radius of the corresponding section of the inner wall surface of the second arc transition wall 13726, which can also avoid sharp structures such as right angles and sharp corners on the inner wall surrounding the rear cavity 300. Of course, in some other embodiments, the second arc transition wall 13726 may not be provided. For example, the part of the fourth side wall 13724 close to the third side wall 13723 can be entirely used to set the second communication hole 1376, so that the second communication hole 1376 extends along the above-mentioned length direction to be flush with the inner wall surface of the third side wall 13723.

[0161] It should be noted that: in the above-mentioned thickness direction, the inner wall of the first communication hole 1375 far from the movement 14 can be flush with the inner wall surface of the bottom wall 1371 facing the movement 14, and the inner wall of the second communication hole 1376 far from the movement 14 can be flush with the inner wall surface of the bottom wall 1371 facing the movement 14, that is, the first communication hole 1375 and the second communication hole 1376 can extend along the above-mentioned thickness direction to be flush with the inner wall surface of the bottom wall 1371 to avoid sharp structures such as right angles and sharp corners on the inner wall surrounding the rear cavity 300, which is conducive to eliminating standing waves. Further, the inner wall surface of at least one of the first side wall 13721 and the third side wall 13723 can be arranged in an arc shape when observed in the above-mentioned height direction to avoid sharp structures such as right angles and sharp corners on the inner wall surrounding the rear cavity 300. Of course, the inner wall surfaces of the side wall 1372 and the bottom wall 1371 can be all connected by arcs.

[0162] In some embodiments, in combination with Figure 25, the heights of the second side wall 13722 and the fourth side wall 13724 relative to the bottom wall 1371 can be greater than the heights of the first side wall 13721 and the third side wall 13723 relative to the bottom wall 1371, so as to allow the movement 14 to be embedded between the second side wall 13722 and the fourth side wall 13724, and the first side wall 13721 and the third side wall 13723 are respectively in contact with the side of the movement 14 facing the bottom wall 1371. At this time, in the above-mentioned thickness direction, the size of the first connecting hole 1375 can be greater than or equal to the distance between the bottom wall 1371 and the movement 14, and the size of the second connecting hole 1376 can be greater than or equal to the distance between the bottom wall 1371 and the movement 14, so as to avoid the occurrence of sharp structures such as right angles and sharp angles on the inner wall of the rear cavity 300, which is conducive to eliminating standing waves. Further, the retaining portion 13 may also include a first seal 1381 and a second seal 1382 elastically supported between the partition 137 and the movement housing 131, for example, the first seal 1381 is elastically supported between the second side wall 13722 and the second housing 1315 and surrounds the first connecting hole 1375, and for another example, the second seal 1382 is elastically supported between the fourth side wall 13724 and the second housing 1315 and surrounds the second connecting hole 1376. Further, the outlet end of the first connecting hole 1375 may be covered with a first acoustic resistance net 1383, and a protective cover may be further provided on the side of the first acoustic resistance net 1383 away from the side wall 1372. Similarly, the outlet end of the second connecting hole 1376 may be covered with a second acoustic resistance net 1384, and a protective cover may be further provided on the side of the second acoustic resistance net 1384 away from the side wall 1372. The acoustic resistance net can both increase the waterproof and dustproof performance and reduce sound leakage; the structural strength of the protective cover is greater than the structural strength of the acoustic resistance net to prevent the acoustic resistance net from being punctured by foreign objects. Furthermore, the porosity of the second acoustic resistance net 1384 can be less than or equal to the porosity of the first acoustic resistance net 1383.

[0163] As an example, the first sealing member 1381 may include a first extension portion 13811 and a second extension portion 13812 connected to the first extension portion 13811, and the second extension portion 13812 extends laterally of the first extension portion 13811. The first extension portion 13811 and the second extension portion 13812 may be respectively fitted and fixed on the side of the side wall 1372 and the bottom wall 1371 away from the rear cavity 300, so as to increase the bonding area between the first sealing member 1381 and the partition 137. Accordingly, the first extension portion 13811 allows the first acoustic resistance net 1383 to be exposed in the area corresponding to the first communication hole 1375, for example, the first extension portion 13811 surrounds the first communication hole 1375 and the first acoustic resistance net 1383 thereon, so as to facilitate the communication between the rear cavity 300 and the outside of the earphone 10. Furthermore, the first extension portion 13811 can press and fix the first acoustic resistance net 1383 on the side of the side wall 1372 facing away from the rear cavity 300 to prevent the first acoustic resistance net 1383 from being separated from the side wall 1372 .

[0164] In this embodiment, the structure of the second seal 1382 and its connection relationship with the partition 137 may be the same as or similar to those of the first seal 1381, and will not be described herein again. Further, the first seal 1381 and the second seal 1382 may be formed on the partition 137 by an injection molding process.

[0165] It should be noted that in this embodiment, structural components such as the movement 14, the partition 137, the acoustic resistance net and the seal thereon can form a speaker assembly, that is, modularization, for easy assembly.

[0166] In some other embodiments, in combination with Figure 30 , the second side wall 13722 may be omitted; a part of the fourth side wall 13724 may be used to provide the second communication hole 1376, and its height relative to the bottom wall 1371 may be equal to the heights of the first side wall 13721 and the third side wall 13723 relative to the bottom wall 1371, so as to abut against the magnetic circuit system 141 together. At this time, the first seal 1381 may be first embedded in a preset sinking groove of the first seal 1381 or the second housing 1315, and then the first seal 1381 is bonded and fixed to the second housing 1315. Further, the first acoustic resistance net 1383 is clamped jointly by the second housing 1315 and the first seal 1381, and then subsequent assembly is carried out. Among them, a sinking groove for accommodating the first acoustic resistance net 1383 may be provided on one side of the first seal 1381 facing the second housing 1315. Similarly, the second seal 1382 and the second acoustic resistance net 1384 may also be bonded and fixed to the second housing 1315, and then a housing assembly is formed, that is, modularization, for easy assembly.

[0167] Based on the above detailed description and for the convenience of description, now in combination with Figure 33The following definitions are made: The front cavity 200 may have a first opening 201 that allows the front cavity 200 to communicate with the outside of the earphone 10. The rear cavity 300 may have a second opening 301 and a third opening 302 that allow the rear cavity 300 to communicate with the outside of the earphone 10. Correspondingly, the second opening 301 may be farther from the ear hole than the first opening 201 and the third opening 302. Herein, the aforementioned first opening to third opening refer to the effective communication areas between the front cavity 200 or the rear cavity 300 and the outside of the earphone 10, that is, the areas with the smallest cross-section through which sound passes during the transmission from the front cavity 200 or the rear cavity 300 to the outside of the earphone 10. For example: The movement 14 and the first housing 1314 (and the cover plate 1316) cooperate to form the front cavity 200, and the first opening 201 corresponds to the sound outlet hole 1311. In an embodiment where the earphone 10 is provided with a partition 137, that is, the partition 137 and the movement 14 cooperate to form the rear cavity 300. If the actual area of the pressure relief hole 1312 is larger than the actual area of the second communication hole 1376, then the second opening 301 corresponds to the second communication hole 1376; if the actual area of the pressure relief hole 1312 is smaller than the actual area of the second communication hole 1376, then the second opening 301 corresponds to the pressure relief hole 1312; if the pressure relief hole 1312 and the second communication hole 1376 are arranged in a staggered manner, then the second opening 301 corresponds to the non-occluded part of the pressure relief hole 1312 and the second communication hole 1376. The third opening 302 is similar thereto and will not be elaborated herein. In some other embodiments where the earphone 10 is not provided with a partition 137, that is, the second housing 1315 and the movement 14 cooperate to form the rear cavity 300, the second opening 301 and the third opening 302 directly correspond to the pressure relief hole 1312 and the sound adjustment hole 1313 respectively. Of course, if the earphone 10 is not provided with at least one of the front cavity 200 and the rear cavity 300, then the corresponding opening will naturally not exist either.

[0168] Furthermore, for the convenience of description, the effective area described in this application may be defined as the product of the actual area of the above-mentioned effective communication area and the porosity of the sound resistance net covered thereon. For example: When the first opening 201 is covered with a sound resistance net, the effective area of the first opening 201 is the product of the actual area of the first opening 201 and the porosity of the sound resistance net; when the first opening 201 is not covered with a sound resistance net, the effective area of the first opening 201 is the actual area of the first opening 201. The second opening 301 and the third opening 302 are similar thereto and will not be elaborated herein. In this application, the effective area of the third opening 302 may be smaller than the effective area of the second opening 301.

[0169] In some embodiments, in combination with Figure 25 and Figure 30, the actual area of the outlet end of the second connecting hole 1376 may be less than or equal to the actual area of the outlet end of the first connecting hole 1375, so that the actual area of the effective connecting area between the sound-adjusting hole 1313 and the rear cavity 300 may be less than or equal to the actual area of the effective connecting area between the pressure relief hole 1312 and the rear cavity 300. Among them, the actual area of the outlet end of the pressure relief hole 1312 may be greater than or equal to the actual area of the outlet end of the first connecting hole 1375. At this time, the size of the outlet end of the sound-adjusting hole 1313 in the above-mentioned length direction may be equal to the size of the outlet end of the pressure relief hole 1312 in the above-mentioned length direction; and / or, the size of the outlet end of the sound-adjusting hole 1313 in the above-mentioned thickness direction may be equal to the size of the outlet end of the pressure relief hole 1312 in the above-mentioned thickness direction. In this way, not only can the actual area of the effective connection area between the sound-adjusting hole 1313 and the pressure relief hole 1312 and the outside of the earphone 10 be adjusted by the size of the connecting hole to meet the corresponding acoustic design requirements, but also the sound-adjusting hole 1313 and the pressure relief hole 1312 can be made to look similar in appearance to increase the consistency of appearance, and they can be allowed to use the same specification of acoustic resistance net to reduce the type of materials / avoid mixing. Of course, in some other embodiments, the size of the sound-adjusting hole 1313 can also change with the change of the second connecting hole 1376, so that it looks quite different from the pressure relief hole 1312 in appearance to increase the appearance recognition. Furthermore, the porosity of the second acoustic resistance net 1384 can also be less than or equal to the porosity of the first acoustic resistance net 1383, so that the effective area of the effective connection area between the sound-adjusting hole 1313 and the back cavity 300 can be less than or equal to the effective area of the effective connection area between the pressure relief hole 1312 and the back cavity 300.

[0170] Furthermore, the effective communication area between the pressure relief hole 1312 and the rear cavity 300 (for example, the first communication hole 1375) can have a first center (denoted as O1) in the above-mentioned length direction, and the effective communication area between the sound adjustment hole 1313 and the rear cavity 300 (for example, the second communication hole 1376) can have a second center (denoted as O2) in the above-mentioned length direction, and the second center can be farther away from the center of the sound outlet hole 1311 (for example, O0) than the first center in the above-mentioned length direction, that is, closer to the third side wall 13723 mentioned above, so as to increase the distance between the sound adjustment hole 1313 and the sound outlet hole 1311 as much as possible, thereby weakening the anti-phase cancellation between the sound output to the outside of the earphone 10 through the sound adjustment hole 1313 and the sound transmitted to the ear through the sound outlet hole 1311.

[0171] It should be noted that: The center of the hole or opening described in this application refers to the position that is equidistant from the four sides of the closed curve enclosing the aforementioned hole or opening. Among them, for regular shapes such as circles and rectangles, the center of the hole or opening described in this application can be its geometric center; for other irregular shapes, the center of the hole or opening described in this application can be its centroid.

[0172] Combined with Figure 34 , the sound transmitted to the outside of the earphone 10 through the first opening 201 can be simply regarded as the first sound formed by the monopole sound source A1, and the sound transmitted to the outside of the earphone 10 through the second opening 301 can be simply regarded as the second sound formed by the monopole sound source A2. The second sound and the first sound can be out of phase, so that they can cancel each other out in the far field, that is, form a "sound dipole" to reduce sound leakage. Preferably, in the wearing state, the connection line of the two monopole sound sources can just point to the ear hole (denoted as the "listening position") so that the user can hear a sufficiently large sound. Among them, the sound pressure magnitude (denoted as P ear ) at the listening position can be used to characterize the strength of the sound heard by the user. Further, by statistically analyzing the sound pressure magnitude (denoted as P far ) on the spherical surface centered on the user's listening position, it can be used to characterize the strength of the sound leakage radiated by the earphone 10 to the far field. Among them, various statistical methods can be used to obtain P far , such as taking the average value of the sound pressure at each point on the spherical surface, or taking the surface integral of the sound pressure distribution at each point on the spherical surface, etc. Obviously, the sound pressure P ear transmitted by the earphone 10 to the user's ear should be large enough to improve the listening effect; the sound pressure P far in the far field should be small enough to improve the sound leakage reduction effect. Therefore, the parameter α can be taken as an index to evaluate the sound leakage reduction / listening effect of the earphone 10:

[0173]

[0174] Further, when the earphone 10 is in the wearing state, the orthographic projection of the holding part 13 on the ear can mainly fall within the range of the helix. For example, the holding part 13 is located on the side of the ear hole close to the user's head top and contacts the antihelix on the front side of the ear. At this time, the first opening 201 can be located between the antihelix and the upper ear root and transmit sound to the ear hole. Further, since the concha and the cymba conchae have a certain depth and are connected to the ear hole, the orthographic projection of the first opening 201 on the ear can at least partially fall within the concha and / or the cymba conchae, so as to facilitate the sound transmitted to the outside of the earphone 10 through the first opening 201 to be transmitted to the ear hole. Not only that, combined with Figure 35 and Figure 36, the ear is also equivalent to a baffle set near the listening position, which has the effects of converging and reflecting the sound transmitted to the outside of the earphone 10, thereby changing the sound field distribution, which is not only beneficial to increase the sound pressure at the listening position, but also beneficial to reduce the sound pressure in the far field. Specifically, the listening position is set between the baffle and the monopole sound source A1. The baffle distorts the sound field distribution, thereby increasing the sound pressure at the listening position; at the same time, a large area of anti-phase cancellation area is still retained in the entire sound field, thereby reducing the sound pressure in the far field. It is worth noting that the user's head can also be used as part of the baffle. Furthermore, since the distance from the two monopole sound sources to the ear can be much smaller than the size of the ear, the ear can achieve an effect similar to that of an acoustic reflector.

[0175] The inventor of the present application has found in a long-term study that in the theoretical model of the acoustic dipole and the baffle, the Figure 37 , the parameter α is mainly affected by the following factors: the angle θ between the line between the two monopole sound sources (denoted as A1-A2) and the normal of the baffle, the spacing d between the two monopole sound sources, the distance D between the monopole sound source A1 and the listening position, the length L of the baffle and the distance B between it and the listening position. Among them, when the angle θ and the spacing d are constant, the larger the length L of the baffle, the smaller the distance B, the smaller the parameter α, that is, the better the sound leakage reduction effect. Based on the above description, the user's ear can be regarded as a baffle, so that the length L is relatively determined, for example, about 50-80mm, and the distance B is about 0. Furthermore, in order to increase the sound pressure at the listening position to enhance the listening effect, the first opening 201 is generally as close to the ear hole as possible, that is, the distance D is generally as small as possible, for example, the distance between the center of the first opening 201 and the center of the ear hole is less than or equal to 16 mm, for example, the distance between the lower edge of the retaining portion 13 facing the ear hole and the highest point (e.g., CP1) of the hook-shaped portion 11 away from the retaining portion 13 in the above-mentioned height direction is greater than or equal to 19 mm. Furthermore, if the spacing d is too small, the sound pressure at the listening position will be reduced, which is not conducive to listening; if the spacing d is too large, the sound pressure in the far field will be increased, which is not conducive to reducing leakage sound. In addition, the actual size of the retaining portion 13 must also be considered. Therefore, the distance between the center of the second opening 301 and the center of the first opening 201 can be between 7 mm and 15 mm. In a specific embodiment, the distance between the center of the second opening 301 and the center of the first opening 201 can be 9 mm.

[0176] Furthermore, combined with Figure 38, taking "no baffle" as a reference, "having a baffle" is significantly beneficial to reducing the parameter α, that is, increasing the sound leakage reduction effect; when the included angle θ = 0°, the parameter α reaches the minimum value, indicating that the best sound leakage reduction effect can be obtained. In the present application, the included angle θ can be within the range of ±80°; preferably, the included angle θ can be within the range of ±40°; more preferably, the included angle θ can be within the range of ±20°. Among them, in combination with Figure 33 , considering that the second opening 301 is generally located on the side of the first opening 201 far from the ear hole, the included angle θ can only take positive values.

[0177] As an example, in combination with Figure 39 and Figure 33 , based on any three mutually perpendicular ones among the above-mentioned basic human body sections and basic axes, a three-dimensional reference coordinate system (denoted as X'Y'Z') can be established. Then, the included angle θ between the connection line between the two monopole sound sources and the normal line of the baffle can be determined by the included angles between the connection line A1 - A2 and the X', Y', and Z' axes respectively. Among them, based on the above relevant description, the connection line A1 - A2 between the two monopole sound sources can also be regarded as the connection line (denoted as O1 - O0) between the center (such as O1) of the second opening 301 and the center (such as O0) of the first opening 201. Based on this, the included angle θ1 between the connection line O1 - O0 and the above-mentioned sagittal plane can be greater than or equal to 10°, preferably the included angle θ1 can be greater than or equal to 30°; the included angle θ2 with the above-mentioned coronal plane can be greater than 0°, preferably the included angle θ2 can be greater than or equal to 4°; the included angle θ3 with the above-mentioned horizontal plane can be less than or equal to 80°, preferably the included angle θ3 can be less than or equal to 60°. In a specific embodiment, the three included angles θ1, θ2, and θ3 can be 34°, 5°, and 56° respectively.

[0178] Furthermore, when the earphone 10 is in a worn state, the holding part 13 can closely adhere to the front side of the ear, and the first opening 201 thereon can also be directly opposite to the ear, so that it can be simply regarded as the above-mentioned baffle being perpendicular to the average normal line of the first opening 201. Based on this, the included angle between the connection line O1 - O0 and the reference plane perpendicular to the average normal line of the first opening 201 can be between 25° and 55°. Among them, the calculation formula for the aforementioned average normal line is:

[0179]

[0180] In the formula, is the aforementioned average normal line; is the normal line of any point on the surface, and ds is the surface element.

[0181] Obviously, when the first opening 210 is a plane, the reference plane perpendicular to the above-mentioned average normal is also the tangent plane of the first opening 201; correspondingly, the above-mentioned average normal can also be parallel to the vibration direction of the movement 14 and the above-mentioned thickness direction. Therefore, the angle between the line O1 - O0 and the aforementioned vibration direction can be between 0° and 50°, preferably between 0° and 40°.

[0182] Furthermore, based on the above relevant description, the ear can be simply regarded as a baffle cooperating with a sound dipole. Then, a reference plane can be determined by at least three non-collinear physiological positions on the front side of the ear. For example, the lines connecting the upper ear root, the incisura intertragica, and the Darwin's tubercle pairwise form a reference plane (denoted as LA - LB - LD), and this reference plane can be used to describe the aforementioned baffle. Based on this, the angle between the line O1 - O0 and the aforementioned reference plane can be between 23° and 53°. In a specific embodiment, the angle between the line O1 - O0 and the aforementioned reference plane can be 38°.

[0183] Furthermore, when the earphone 10 is in a worn state, it will form multiple contact points with the ear to ensure the wearing stability. Therefore, there will also be corresponding positions on the earphone 10 for these contact points; of course, in those embodiments where the hook portion 11 is provided with an elastic portion 112, the elastic deformation of the elastic portion 112 before and after wearing may cause a certain deviation in this corresponding relationship, and this deviation can be controlled by the deformation ability of the elastic portion 112. Therefore, for the sake of convenience in description, we consider this deviation to be tolerable. As an example, in combination with Figure 17 and Figure 45 , the free end of the holding portion 13 away from the fixing component 20 can have a first reference point (such as CP0) for contacting the front side of the ear, the fixing component 20 can have a second reference point (such as CP3) for contacting the upper ear root and a third reference point (such as CP6) for contacting the ear on the rear side of the ear, and the lines connecting the first reference point, the second reference point, and the third reference point pairwise form a reference plane (denoted as CP0 - CP3 - CP6), and this reference plane can be used to describe the aforementioned baffle. Based on this, the angle between the line O1 - O0 and the aforementioned reference plane can be between 15° and 45°. In a specific embodiment, the angle between the line O1 - O0 and the aforementioned reference plane can be 30°.

[0184] It should be noted that: compared with the above-mentioned baffle, the front side surface of the ear is not a flat and regular structure. Therefore, all the other parameters related to the parameter α are obtained through theoretical analysis and actual measurement. Among them, the actual measurement can refer to the measurement after wearing the earphone 10 on the above-mentioned simulator (such as GRAS 45BC KEMAR).

[0185] As is well known, although the frequency range of sounds that can be sensed by the ears of normal people is between 20 Hz and 20 kHz, it does not mean that all these sounds can be heard. Generally speaking, the ears of normal people mainly hear sounds with frequencies below 4 kHz. Based on this, on the one hand, the resonance frequency of the first sound transmitted to the outside of the earphone 10 through the first opening 201 can be shifted as much as possible towards the high frequency, so that the frequency response curve of the first sound is as flat as possible in the mid-high frequency band and above, in order to improve the listening effect. On the other hand, the resonance frequency of the second sound transmitted to the outside of the earphone 10 through the second opening 301 can also be shifted as much as possible towards the high frequency, which can not only reduce the user's sensitivity to sound leakage, but also make the above-mentioned anti-phase cancellation extend to the high frequency band, so as to reduce sound leakage without affecting the listening effect. Therefore, the frequency response curve of the first sound can have a first mid-high frequency lowest resonance peak, and the first mid-high frequency lowest resonance peak is the lowest among all the resonance peak frequencies in the mid-high frequency band and above of the frequency response curve formed by the first opening 201; similarly, the frequency response curve of the second sound can have a second mid-high frequency lowest resonance peak, and the second mid-high frequency lowest resonance peak is the lowest among all the resonance peak frequencies in the mid-high frequency band and above of the frequency response curve formed by the second opening 301. In short, the frequency response curve of the first sound can have a first resonance peak with the lowest frequency in the mid-high frequency band and above; similarly, the frequency response curve of the second sound can have a second resonance peak with the lowest frequency in the mid-high frequency band and above. Among them, the peak resonance frequencies of the first mid-high frequency lowest resonance peak and the second mid-high frequency lowest resonance peak can be greater than or equal to 5 kHz. Preferably, the peak resonance frequencies of the first mid-high frequency lowest resonance peak and the second mid-high frequency lowest resonance peak can both be greater than or equal to 6 kHz. Further, the difference between the peak resonance frequency of the first mid-high frequency lowest resonance peak and the peak resonance frequency of the second mid-high frequency lowest resonance peak can be less than or equal to 1 kHz, so as to facilitate better anti-phase cancellation of the second sound and the first sound in the far field.

[0186] It should be noted that: in this application, the frequency range corresponding to the low frequency band can be 20 - 150 Hz, the frequency range corresponding to the middle frequency band can be 150 - 5 kHz, and the frequency range corresponding to the high frequency band can be 5k - 20 kHz. Among them, the frequency range corresponding to the mid-low frequency band can be 150 - 500 Hz, and the frequency range corresponding to the mid-high frequency band can be 500 - 5 kHz. For the frequency response curve described in this application, the horizontal axis can represent frequency, and its unit is Hz; the vertical axis can represent intensity, and its unit is dB. Further, the above-mentioned first mid-high frequency lowest resonance peak can include both the resonance peak generated by the cavity resonance and the standing wave peak generated by the reflection of the cavity surface; the same is true for the above-mentioned second mid-high frequency lowest resonance peak, which will not be elaborated here.

[0187] Based on the above detailed description, when the user wears the earphone 10, they mainly listen to the first sound. Therefore, the peak resonance frequency of the lowest resonance peak of the first mid-high frequency has a greater impact on the listening effect. For this reason, corresponding research on the lowest resonance peak of the first mid-high frequency is carried out to facilitate improving the listening effect. Among them, the resonance peaks of the frequency response curve of the first sound in the mid-high frequency band and above can mainly originate from the cavity resonance, which generally satisfies the calculation formula of the resonance frequency of the Helmholtz resonance cavity:

[0188]

[0189] In the formula, f0 is the resonance frequency of the cavity resonance, c0 is the speed of sound in the air, S is the actual area of the first opening 201, V is the volume of the front cavity 200, l is the length of the first opening 201, and r is the equivalent radius of the first opening 201. Among them, l generally depends on the wall thickness of the housing.

[0190] Obviously, the larger the actual area of the first opening 201 and the smaller the volume of the front cavity 200, the higher the resonance frequency corresponding to the cavity resonance, that is, the easier it is for the lowest resonance peak of the first mid-high frequency to shift to a higher frequency. Further, a sound resistance net is generally covered on the first opening 201 to increase the waterproof and dustproof performance and adjust the frequency response curve. As an example, the effective area of the first opening 201 can be greater than or equal to 2 mm 2 . In a specific embodiment, the actual area of the first opening 201 can be greater than or equal to 7 mm 2 , and the porosity of the sound resistance net covered thereon can be greater than or equal to 13%; and / or, the pore size can be greater than or equal to 18 μm. Further, the volume of the front cavity 200 can be less than or equal to 90 mm 3 . Among them, the volume of the front cavity 200 can be approximately the product of the area of the diaphragm 143 and the depth of the front cavity 200 in the vibration direction of the movement 14. Based on this, after the specification model of the movement 14 is selected and on the premise of satisfying the vibration stroke of the diaphragm 143, the smaller the depth of the front cavity 200 in the foregoing vibration direction, the better. Therefore, the maximum depth of the front cavity 200 in the foregoing vibration direction can be less than or equal to 3 mm, preferably less than or equal to 1 mm.

[0191] Further, combined with Figure 40 , when the front cavity 200 is set to a cubic structure, at least a pair of parallel or approximately parallel reflecting surfaces will be formed on the cavity surface of the front cavity 200, thereby forming a standing wave. Specifically, when the sound wave is reflected in the cavity, the incident wave and the reflected wave are superimposed to form fixed wave antinodes and nodes, thereby triggering a standing wave at a specific frequency. In other words, the resonance peaks of the frequency response curve of the first sound in the mid-high frequency band and above can also originate from the standing wave, which generally satisfies the calculation formula:

[0192] n is a positive integer.

[0193] In the formula, f0 is the frequency of the standing wave peak, c0 is the speed of sound in air, and L is the distance between the center of the first opening 201 and the cavity surface of the front cavity 200.

[0194] Obviously, the smaller the distance L, the higher the frequency corresponding to the standing wave peak, that is, the first mid-high frequency lowest resonance peak is more likely to shift to a higher frequency. Exemplarily, on a reference plane perpendicular to the vibration direction of the movement 14 (such as the plane where Y1Z1 is located), the distance between the center of the first opening 201 and the cavity surface of the front cavity 200 can be less than or equal to 17.15 mm.

[0195] Based on the above related descriptions, the front cavity 200 can have a first front cavity surface 202 and a third front cavity surface 204 spaced apart from each other in the long axis direction of the movement 14, and a second front cavity surface 203 and a fourth front cavity surface 205 spaced apart from each other in the short axis direction of the movement 14. Among them, the first front cavity surface 202 can be closer to the connecting portion 12 than the third front cavity surface 204, the fourth front cavity surface 205 can be closer to the ear hole than the second front cavity surface 203, and the distance between the first front cavity surface 202 and the third front cavity surface 204 can be greater than or equal to the distance between the second front cavity surface 203 and the fourth front cavity surface 205. Further, the perpendicular distances from the center of the first opening 201 to the first front cavity surface 202, the second front cavity surface 203, the third front cavity surface 204, and the fourth front cavity surface 205 can be defined as the first distance L1, the second distance L2, the third distance L3, and the fourth distance L4 respectively. At this time, assuming that the four perpendicular distances have the following basic relationship: L1≥L2≥L3≥L4, then the frequencies corresponding to the respective standing wave peaks have the following relationship: f1≤f2≤f3≤f4. Obviously, the first standing wave peak of the first sound in the mid-high frequency band and above frequency bands will be determined by the largest one of the four perpendicular distances, so L1≤17.15 can be satisfied. Exemplarily, the first distance can be less than or equal to the third distance, and the fourth distance can be less than or equal to the second distance, so that the first opening 201 is closer to the ear hole.

[0196] It should be noted that: the first opening 201 can be opposite to the diaphragm 143 in the vibration direction of the movement 14, and the ratio of the size of the first opening 201 in the long axis direction of the movement 14 to the size of the first opening 201 in the short axis direction of the movement 14 can be less than or equal to 3. For example, the first opening 201 is set to be circular, or for another example, the first opening 201 is set to be runway-shaped.

[0197] Combined with Figure 41, the earphone 10 may further include a Helmholtz resonance cavity 400 communicating with the front cavity 200. The Helmholtz resonance cavity 400 is configured to weaken the peak resonance intensity of the lowest resonance peak of the first mid-high frequency, that is, to absorb the sound energy of the front cavity 200 near the peak resonance frequency, so as to suppress the sudden increase of the peak resonance intensity, make the frequency response curve flatter, and thus make the sound quality more balanced. As an example, and in combination with Figure 42 , the difference between the peak resonance intensity of the lowest resonance peak of the first mid-high frequency when the opening of the Helmholtz resonance cavity 400 communicating with the front cavity 200 is in the open state (denoted as "HR_Y") and the peak resonance intensity of the lowest resonance peak of the first mid-high frequency when the opening of the Helmholtz resonance cavity 400 communicating with the front cavity 200 is in the closed state (denoted as "HR_N") may be greater than or equal to 3 dB. Further, a sound resistance net may be provided on the opening of the Helmholtz resonance cavity 400 communicating with the front cavity 200 to further adjust the frequency response curve. Among them, the porosity of the sound resistance net may be greater than or equal to 3%.

[0198] Further, the number of the Helmholtz resonance cavities 400 may be multiple to better absorb the sound energy of the front cavity 200 near the peak resonance frequency. Among them, the multiple Helmholtz resonance cavities 400 may be arranged in parallel with the front cavity 200, for example, communicating with the front cavity 200 respectively; or, the multiple Helmholtz resonance cavities 400 may be arranged in series with the front cavity 200, for example, communicating with the front cavity 200 through one of them.

[0199] In some embodiments, in combination with Figure 22 , the Helmholtz resonance cavity 400 may be arranged in the second region 13B, for example, arranged in the flexible coating structure 132. Specifically, in addition to providing a deformation space for the flexible coating structure 132, the blind hole 1321 in the flexible coating structure 321 may also serve as the Helmholtz resonance cavity 400. Correspondingly, a communication hole for communicating the Helmholtz resonance cavity 400 with the front cavity 200 is left on the cover plate 1316.

[0200] In some other embodiments, in combination with Figure 27, the Helmholtz resonance cavity 400 can be arranged within the connecting portion 12, for example, between the third housing 122 and the first housing 1314. Specifically, a first flange may be provided on the inner wall surface of the first housing 1314 facing the third housing 122, and the third housing 122 is pressed against the first flange to enclose and form the Helmholtz resonance cavity 400; alternatively, a second flange may be provided on the inner wall surface of the third housing 122 facing the first housing 1314, and the first housing 1314 is pressed against the second flange to enclose and form the Helmholtz resonance cavity 400. In short, the Helmholtz resonance cavity 400 can be formed by the snap-fit of the third housing 122 and the first housing 1314. Further, the Helmholtz resonance cavity 400 can also be formed by a blow molding process and then placed and fixed within the connecting portion 12.

[0201] Based on the above detailed description, in order to also shift the resonance frequency of the second sound as much as possible towards the high frequency, the rear cavity 300 can also adopt the same or similar technical solutions as the front cavity 200, which will not be elaborated here. The main difference from the front cavity 200 is that for the standing wave, the rear cavity 300 can also make the wavelength of the standing wave in the rear cavity 300 shorter by destroying the high-pressure region of the sound field in the rear cavity 300, so as to make the peak resonance frequency of the second mid-high frequency lowest resonance peak as large as possible. Among them, in combination with Figure 33 , the third opening 302 can be arranged in the high-pressure region of the sound field in the rear cavity 300. For example, the third opening 302 and the second opening 301 are located on opposite sides of the movement 14. As an example, and in combination with Figure 44 , when the third opening 302 is in the open state (denoted as "Turn-on"), the peak resonance frequency of the second mid-high frequency lowest resonance peak can shift towards the high frequency compared with when the third opening 302 is in the closed state (denoted as "Turn-off"), and the shift amount can be greater than or equal to 1 kHz. Further, the effective area of the third opening 302 can be smaller than the effective area of the second opening 301 to facilitate the adjustment of the peak resonance frequency of the second mid-high frequency lowest resonance peak. Of course, the dimension of the second opening 301 in the long axis direction of the movement 14 can also be larger than the dimension of the first opening 201 in the long axis direction of the movement 14.

[0202] Based on the above relevant description, and in combination with Figure 43, the rear cavity 300 may have a first rear cavity surface 303 and a second rear cavity surface 304 spaced from each other in the long axis direction of the movement 14, and the second opening 301 and the third opening may be spaced from each other in the short axis direction of the movement 14. Among them, the actual area of the third opening 302 may be smaller than the actual area of the second opening 301, so that the effective area of the third opening 302 may be smaller than the effective area of the second opening 301. At this time, at least one of the sections of the first rear cavity surface 303 and the second rear cavity surface 304 close to the third opening 302 may be arc-shaped when observed along the vibration direction of the movement 14, so as to avoid sharp structures such as right angles and sharp corners on the inner wall surrounding the rear cavity 300, which is conducive to eliminating standing waves. Further, at least one of the first cavity surface 303 and the third cavity surface 305 may be arc-shaped when observed along the aforementioned short axis direction, which is also conducive to eliminating standing waves.

[0203] Further, the opening direction of the second opening 301 may face the user's head. For example, the angle between its opening direction and the above-mentioned vertical axis is between 0° and 10°, so as to allow the second opening 301 to be farther from the ear hole than the third opening 302, so that it is difficult for the user and others in the surrounding environment to hear the sound output to the outside of the earphone 10 through the second opening 301, so as to reduce sound leakage. Among them, the opening direction of the second opening 301 may refer to the direction of its average normal. Correspondingly, the second opening 301 may have a first center (such as O1) in the long axis direction of the movement 14, and the third opening 302 may have a second center (such as O2) in the aforementioned long axis direction, and the second center is farther from the center of the first opening 201 than the first center in the aforementioned long axis direction, so as to maximize the distance between the third opening 302 and the first opening 201, thereby weakening the anti-phase cancellation between the sound output to the outside of the earphone 10 through the third opening 302 and the sound transmitted to the ear through the first opening 201. Among them, the first rear cavity surface 303 may be closer to the connecting portion 12 than the second rear cavity surface 304, and the radius of curvature of at least part of the section of the first rear cavity surface 303 may be greater than the radius of curvature of the corresponding section of the second rear cavity surface 204.

[0204] Exemplarily, the first rear cavity surface 303 may include a first sub-rear cavity surface 3031, a second sub-rear cavity surface 3032, and a third sub-rear cavity surface 3033 that are sequentially connected. The first sub-rear cavity surface 3031 may be closer to the second opening 301 and farther from the second rear cavity surface 304 than the third sub-rear cavity surface 3033. Among them, at least the second sub-rear cavity surface 3032 of the second sub-rear cavity surface 3032 and the third sub-rear cavity surface 3033 may be arc-shaped. For example, the second sub-rear cavity surface 3032 is circular arc-shaped, and the radius of the circular arc is greater than or equal to 2 mm. At this time, in the direction from the second opening 301 to the third opening 302, the angle between the tangent of the second sub-rear cavity surface 3032 and the short axis direction of the movement mechanism 14 may gradually increase, and the angle between the tangent of the third sub-rear cavity surface 3033 and the aforementioned short axis direction may remain unchanged or gradually decrease.

[0205] It should be noted that the fixing component 20 described in the present application is connected to the holding part 13, mainly for making the holding part 13 contact the front side of the ear in the wearing state. Based on this, in some embodiments, the fixing component 20 may include a hook part 11 and a connecting part 12 connecting the hook part 11 and the holding part 13. The related structures and their connection relationships can refer to the detailed descriptions of any embodiment of the present application, and will not be elaborated here. In some other embodiments, in combination Figure 45 , the fixing component 20 may be annularly arranged and wound around the ear, such as Figure 45 shown in (a) of Figure 45 ; it may also be set as an earhook and a rear hook structure and wound around the rear side of the head, such as Figure 45 shown in (b) of

[0206] Furthermore, the technical solutions described in the present application can be applied not only to earphones, but also to hearing aids, audio glasses, or other intelligent glasses such as AR, VR, and MR.

[0207] The above are only some embodiments of the present application, and thus do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A kind of earphone, characterized in that, The earphone includes a fixing component and a holding part connected to the fixing component. The holding part has a thickness direction, a length direction, and a height direction that are orthogonal to each other. The fixing component is configured to position the holding part on the side of the external auditory canal of the ear closer to the user's head top in the wearing state and contact the antihelix to prevent the holding part from blocking the external auditory canal. The fixing component includes a hook-shaped part. In the wearing state, the hook-shaped part is configured to be hung between the back side of the ear and the user's head, thereby allowing the holding part to cooperate with the hook-shaped part to clamp the ear.

2. The earphone according to claim 1, characterized in that, The fixing component includes a connecting part that connects the hook-shaped part and the holding part. The hook-shaped part includes an elastic part. The elastic part includes a first section. The starting point of the first section is the connection point between the elastic part and the connecting part, and the ending point is the highest point of the elastic part in the height direction in the wearing state. Among them, the radius of curvature of the first section can be between 8 mm and 10 mm.

3. The earphone according to claim 2, characterized in that, The elastic part of the earphone has a second section. The starting point of the second section is the ending point of the first section. There is a point on the elastic part. The distance between the point and the highest point in the length direction is between 8 mm and 11 mm, and the distance between the point and the highest point in the above-mentioned height direction is between 7 mm and 10 mm. The point is the ending point of the second section. Among them, the radius of curvature of the second section can be between 9 mm and 12 mm.

4. The earphone according to claim 1, wherein, In the wearing state, the holding part presses against the area where the cymba conchae, triangular fossa, and antihelix are located under the clamping pressing force.

5. The earphone according to claim 1, wherein, The earphone further includes an extension part that is connected to the holding part. Among them, in the extending direction of the connecting part, there is a gap between the extension part and the holding part, and the gap is less than or equal to the thickness of the helix of the ear, so that in the wearing state, the extension part can extend into the cymba conchae and / or triangular fossa of the ear.

6. The earphone according to claim 1, characterized in that, The holding part is provided with a sound outlet hole. In the wearing state, the orthographic projection of the sound outlet hole on the ear in the thickness direction can at least partially fall within the cymba conchae, and the holding part contacts the antihelix.

7. The earphone according to claim 2, characterized in that, In the thickness direction, the minimum distance between the elastic part and the holding part is greater than 0 and less than or equal to 5 mm.

8. The earphone according to claim 1, characterized in that, The holding part is provided with a pressure relief hole and a sound outlet hole. The pressure relief hole is farther from the ear hole than the sound outlet hole, and the opening direction of the pressure relief hole faces the user's head top.

9. The earphone according to claim 8, wherein, The included angle between the opening direction of the pressure relief hole and the height direction is between 0° and 10°.

10. The earphone according to claim 8, wherein, The holding part is provided with a sound adjustment hole, and the sound adjustment hole and the pressure relief hole are arranged in opposite directions in the height direction.

11. The earphone according to claim 1, wherein The fixing component includes a connecting part and a battery part. In the direction from the connecting part to the battery part, the radius of curvature first gradually increases and then gradually decreases.

12. The earphone according to claim 8, wherein, The included angle between the connection line between the center of the pressure relief hole and the center of the sound outlet hole and the thickness direction can be between 0° and 50°.

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