A headset

Abstract

The present application mainly relates to an earphone, which includes a fixing component and a holding part connected to the fixing component, the fixing component is used to make the holding part contact with the front side of the user's ear in a wearing state; the holding part includes a movement shell connected to the fixing component and a movement arranged in the movement shell, the holding part forms a front cavity and a rear cavity on opposite sides of the movement, the movement shell is provided with a sound outlet hole connected to the front cavity and a pressure relief hole connected to the rear cavity, the opening direction of the pressure relief hole is toward the top of the user's head, and the angle between the opening direction of the pressure relief hole and the vertical axis of the user is between 0° and 10°, the sound outlet hole is closer to the ear hole than the pressure relief hole, the movement can generate sound transmitted to the ear through the sound outlet hole, which is helpful to prevent the user and other people in the surrounding environment from hearing the sound output to the outside of the earphone through the pressure relief hole, so as to reduce sound leakage.

Description

[0001] This application claims the priority of the Chinese patent application filed with the China Patent Office on July 29, 2020, with application number 2020107433964 and invention name “A Headphone”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of sound-generating instruments, and in particular to a headset. Background Art

[0003] Headphones have been widely used in people's daily life. They can be used with mobile phones, computers and other electronic devices to provide users with an auditory feast. According to the working principle of headphones, they can generally be divided into air conduction headphones and bone conduction headphones; according to the way users wear headphones, they can generally be divided into headphone, earhook headphones and in-ear headphones; according to the interaction between headphones and electronic devices, they can generally be divided into wired headphones and wireless headphones. Summary of the invention

[0004] An embodiment of the present application provides an earphone, which includes a fixing component and a holding portion connected to the fixing component, the fixing component being used to make the holding portion contact the front side of the user's ear when worn; the holding portion includes a movement shell connected to the fixing component and a movement arranged in the movement shell, the holding portion forming a front cavity and a rear cavity on opposite sides of the movement, the movement shell being provided with a sound outlet hole connected to the front cavity and a pressure relief hole connected to the rear cavity, the opening direction of the pressure relief hole being toward the top of the user's head, and the angle between the opening direction of the pressure relief hole and the vertical axis of the user being between 0° and 10°, the sound outlet hole being closer to the ear hole than the pressure relief hole, and the movement being able to generate sound transmitted to the ear through the sound outlet hole.

[0005] The beneficial effect of the present application is that the angle between the opening direction of the pressure relief hole in the earphone provided by the present application and the vertical axis of the user is between 0° and 10°, which helps to prevent the user and other people in the surrounding environment from hearing the sound output to the outside of the earphone through the pressure relief hole, thereby reducing sound leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0007] Figure 1 is a front structural diagram of an ear contour of a user described in the present application;

[0008] Figure 2 is a schematic diagram of the main structure of an embodiment of a headset provided by the present application;

[0009] Figure 3 yes Figure 2 The left side structural diagram of the middle earphone;

[0010] Figure 4 yes Figure 2 Schematic diagram of the front view of the middle earphone in the wearing state;

[0011] Figure 5 yes Figure 2 A schematic diagram of the rear side view of the middle earphone in the wearing state;

[0012] Figure 6 yes Figure 2 Schematic diagram of the mechanical model of the middle earphone in the wearing state;

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

[0014] Figure 8 yes Figure 7 The left side structural diagram of the middle earphone;

[0015] Fig. 9 yes Figure 7 Schematic diagram of the front view of the middle earphone in the wearing state;

[0016] Fig.10 yes Figure 7 A schematic diagram of the rear side view of the middle earphone in the wearing state;

[0017] Fig.11 yes Figure 7 Schematic diagram of the mechanical model of the middle earphone in the wearing state;

[0018] Fig.12 is a schematic diagram of a top view of another embodiment of the earphone provided by the present application;

[0019] Fig.13 is a schematic diagram of the main structure of another embodiment of the earphone provided by the present application;

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

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

[0022] Fig.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] Fig.17 is a schematic structural diagram of a side of an earphone embodiment provided by the present application that faces the ear;

[0024] Fig.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] Fig.19 is a schematic diagram of the disassembled structure of an embodiment of the earphone provided by the present application;

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

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

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

[0029] Fig.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] Fig.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] Fig.25 is a schematic diagram of the disassembled structure of an embodiment of the earphone provided by the present application;

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

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

[0034] Fig.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] Fig.29 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;

[0036] Fig.30 is a schematic diagram of the disassembled structure of an embodiment of the earphone provided by the present application;

[0037] Fig.31 This is a schematic structural diagram of a partition embodiment provided by the present application, facing the movement side;

[0038] Fig.32 is a schematic cross-sectional structure diagram of an embodiment of an earphone provided by the present application;

[0039] Fig.33 is a schematic cross-sectional structure diagram of an embodiment of an earphone provided by the present application;

[0040] Fig.34 is a schematic diagram of the sound field distribution of the acoustic dipole provided by the present application;

[0041] Fig.35 It is a schematic diagram of the sound field distribution of an acoustic dipole provided by the present application in combination with a baffle;

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

[0043] Fig.37 It is a schematic diagram of a theoretical model of an acoustic dipole with a baffle provided in the present application;

[0044] Fig.38 It is a schematic diagram of the relationship between the parameter α and the angle θ provided in this application;

[0045] Fig.39 is a schematic diagram of the relative relationship between an embodiment of an acoustic dipole provided by the present application and an ear;

[0046] Fig.40 is a schematic structural diagram of a side of an earphone embodiment provided by the present application that faces the ear;

[0047] Fig.41 is a structural schematic diagram of an embodiment of a headset provided by the present application;

[0048] Fig.42 is a schematic diagram of a frequency response curve of an embodiment of a headset provided by the present application;

[0049] Fig.43 is a schematic diagram of the structure of the back cavity of an earphone embodiment provided by the present application;

[0050] Fig.44 is a schematic diagram of a frequency response curve of an embodiment of a headset provided by the present application;

[0051] Fig.45 It is a schematic diagram of the structures of three embodiments of the earphones provided in the present application in the wearing state respectively. DETAILED DESCRIPTION

[0052] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0053] Reference to "embodiment" in this application means that a specific feature, structure or characteristic described in conjunction with the embodiment may be included in at least one embodiment of this application. It is explicitly and implicitly understood by those skilled in the art that the embodiment described in this application may be combined with other embodiments.

[0054] See also Figure 1 , Figure 1 It is a front structural schematic diagram of the outline of an ear of the user described in the present application.

[0055] like Figure 1 As shown, in addition to the external auditory canal 101 and the concha cavity 102 near it, the user's ear 100 also has a certain depth and volume in three-dimensional space, and can also be used to meet the wearing requirements of the earphone. In other words, by reasonably designing the structure of the earphone, and by using the parts of the user's ear 100 other than the external auditory canal 101, the wearing of the earphone and the propagation of mechanical vibration can also be achieved, and the user's external auditory canal 101 can be "liberated", thereby improving the user's health and reducing the probability of traffic accidents. Based on this, the present application proposes an earphone in a different way, and mainly uses the upper part of the user's ear 100 (specifically, the area where the cymbidium 103, the concha cavity 104, the antihelix 105, the scaphoid 106, the helix 107 and other parts are located) to achieve the wearing of the earphone and the propagation of mechanical vibration. Of course, in order to improve the comfort and reliability of the earphone in wearing, it is also possible to further use the user's earlobe 108 and other parts. Furthermore, for the convenience of description, some special physiological positions on the ear 100 may be further identified, such as the upper ear root LA where the front edge of the helix 107 connects to the head, the Darwin's tubercle LB on the helix 107, the antihelix 105 near the end of the earlobe 108 and facing the cavum concha 102, and the intertragus notch LD at the end of the cavum concha 102 near the earlobe 108. Of course, due to individual differences among users, physiological positions such as Darwin's tubercle may not be obvious or even non-existent on the ears of some users, but this does not mean that other users do not have such physiological positions on their ears.

[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 view 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 5 As shown, the hook-shaped portion 11 can be mainly used to hang between the back 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, thereby allowing the holding portion 13 and the hook-shaped portion 11 to cooperate to clamp the ear. As an example, the connecting portion 12 can extend from the head to the outside of the head, and then cooperate with the hook-shaped portion 11 to provide the holding portion 13 with a pressing force on the front side of the ear. Among them, the holding portion 13 can be pressed against the area where the cymba concha, the triangular fossa, the antihelix and other parts are located under the action of the pressing force, so that the earphone 10 does not block the external auditory canal of the ear when it is in the wearing state. As an example, when the earphone 10 is in the 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 top of the user's head, and contact the helix and / or the antihelix. In this way, the holding portion 13 can be prevented from blocking the external auditory canal, thereby freeing the user's ears; the contact area between the holding portion 13 and the ear can be increased, 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 containing a head and its (left and right) ears can be made, such as GRAS 45BC KEMAR. Therefore, descriptions such as "the user wears headphones" or "the headphones are in a wearing state" in this application can refer to the headphones 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 headphones are worn on the ears of the aforementioned simulator; for the sake of convenience of description, the aforementioned normal wearing state can be further illustrated from the front side, back side, etc. of the ear, for example Figure 4 and Figure 5 The normal wearing state shown, for example Fig. 9 and Fig.10 Of course, due to individual differences among users, the actual wearing state of the headset 10 may be somewhat different from the aforementioned normal wearing state.

[0060] For users such as adult males, the thickness of their ears is often thicker (commonly known as "thick ears"). By reasonably designing the shape, size and other structural parameters of the connecting portion 12 and its connection relationship with the hook portion 11 and the retaining portion 13, which will be exemplarily described below, it can be ensured that the earphone 10 fits the ear as closely as possible to improve the wearing stability of the earphone 10, and it can also prevent the earphone 10 from excessively 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. Furthermore, for users such as children, minors, and adult women, the thickness of their ears is often thinner (commonly known as "thin ears"), especially compared to the thickness of the ears of adult males. In order to increase the fit between the earphone 10 and the user's ear when the earphone 10 is in the wearing state, the size of the connecting portion 12 can be very small, for example, the connecting portion 12 is a circular arc transition between the retaining portion 13 and the hook portion 11.

[0061] Furthermore, the earphone 10 may also include a movement 14, a mainboard 15 and a battery 16. The movement 14 is mainly used to convert electrical signals into corresponding mechanical vibrations (i.e., "sound"), and may be electrically connected to the mainboard 15 and the battery 16 through corresponding conductors; the mainboard 15 is mainly used to control the sound of the movement 14, and the battery 16 is mainly used to provide electrical energy for the sound of the movement 14. Of course, the earphone 10 described in the present application may also include microphones such as microphones and pickups, and may further include communication devices such as Bluetooth and NFC (Near Field Communication), which are electrically connected to the mainboard 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 the wearing state, the movement 14 can be closely attached to the ear of the user under the action of the pressing force. Further, when the earphone 10 is in the wearing state, since the holding portion 13 is mainly located in front of the ear of the user, such as Figure 4 As shown, the holding portion 13 can be used to fix the movement 14 and also be provided with some function keys ( Figure 2 Based on this, the main board 15 can also be arranged on the holding part 13 to shorten the wiring distance between the movement 14 and other functions such as function buttons and the main board 15. It is worth noting that: since the holding part 13 can be provided with the movement 14, the main board 15, the function buttons, etc., and are located in front of the user's ear when the headset 10 is in the wearing state, the battery 16 can be arranged on the hook part 11, and when the headset 10 is in the wearing state, it is mainly located between the back of the user's ear and the head, such as Figure 5 As shown. Such a configuration can not only increase the capacity of the battery 16 to improve the endurance of the headset 10, but also balance the weight of the headset 10 to improve the stability and comfort of the headset 10 in wearing. At this time, the weight of the headset 10 can be distributed relatively evenly at both ends, and the user's ear can also be used as a fulcrum to support the headset 10 when the headset 10 is in the wearing state, so that the headset 10 can at least not slip off in the non-moving state when it is in the wearing state. Of course, as a result, the user's ear will bear most of the weight of the headset 10, which may easily cause discomfort in the scenario of long-term wearing. For this reason, the hook-shaped portion 11, the connecting portion 12, the retaining portion 13 and other structures can be made of a softer material (such as polycarbonate, polyamide, acrylonitrile-butadiene-styrene copolymer, etc.) to improve the comfort of the headset 10 in wearing. Further, in order to improve the structural strength of the headset 10, elastic metal wires such as spring steel, titanium alloy, titanium-nickel alloy, chrome-molybdenum steel and the like can also be arranged in the hook-shaped portion 11, the connecting portion 12, the retaining portion 13 and other structures.

[0063] Furthermore, different users may have large differences in age, gender, expression of gene-controlled traits, etc., resulting in different sizes and traits of ears and heads of different users. To this end, the hook portion 11 is rotatable relative to the connecting portion 12, or the retaining portion 13 is rotatable relative to the connecting portion 12, or a part of the connecting portion 12 is rotatable relative to another part, so that the relative position relationship of the hook portion 11, the connecting portion 12, and the retaining portion 13 in three-dimensional space can be adjusted, so that the earphone 10 can be adapted to different users, that is, to increase the scope of applicability of the earphone 10 to users in terms of wearing. For example: the connecting portion 12 is made of a deformable material such as soft steel wire, and the user bends the connecting portion 12 to rotate one part relative to the other part, so as to adjust the relative position of the hook portion 11, the connecting portion 12, and the retaining portion 13 in three-dimensional space, thereby meeting their wearing needs. For another example: the connecting portion 12 is provided with a rotating shaft mechanism 121, and the user can also adjust the relative positions of the hook portion 11, the connecting portion 12, and the retaining 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 scope of understanding of technicians in this technical field and is not described in detail here. Furthermore, if the hook portion 11 and the connecting portion 12 are movably connected through the rotating shaft mechanism 121, the hook portion 11 can rotate relative to the connecting portion 12; if the retaining portion 13 and the connecting portion 12 are movably connected through the rotating shaft mechanism 121, the retaining portion 13 can rotate 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 rotate relative to another part.

[0064] See also Figure 6 , Figure 6 yes Figure 2 Schematic diagram of the mechanical model of the earphone in the wearing state. It should be noted that: Figure 6 The YZ plane can be considered as the plane where the user's head is located; Figure 6 The middle ABC segment can be regarded as the hook-shaped part. Figure 6 The middle CD segment can be regarded as the connecting part. Figure 6 The DEF section can be regarded as a holding section. Figure 6 Point C can correspond to Figure 1 The area proximal to the middle ear (eg Figure 1 The area shown by the dashed box C in the figure).

[0065] like Figures 4 to 6As shown, when the earphone 10 is in the wearing state, the ABC segment is mainly located at the back side of the user's ear, the DEF segment 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 a basic wearing posture. The following is an exemplary description of the force applied to the earphone 10 during wearing and its stability, etc.:

[0066] like Figure 6 As shown, 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 (eg Figure 6 In the direction of the end where point A is located, the hook-shaped portion 11 bends toward 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: the first contact point B and the second contact point A are both defined points in the mechanical model. When actually worn, due to the differences in the physiological structures of the head, ears, etc. of different users, the actual wearing of the headset 10 will have a certain impact. The position where the headset 10 contacts the head when actually worn can correspond to the free end of the hook-shaped portion 11, or it can be any point between the above-mentioned free end and the first contact point B; of course, the AB segment can also partially or completely abut against the user's head. Its mechanical model and the stability principle in actual wearing are the same as the above-mentioned technical solution, which is the content that can be easily known and adjusted by technical personnel in this field on the basis of the technical solution of this application without creative labor, and will not be repeated here. It is arranged in this way so that the hook-shaped 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 directed to the outside of the head at the second contact point A. The force is converted into a force directed to the head at the first connection point C through the lever structure, and then provides a clamping force on the front side of the ear for the retaining portion 13 through the connecting portion 12.

[0067] It should be noted that: in order to enable the free end of the hook-shaped portion 11 to press against the user's head when the earphone 10 is in the wearing state, and enable the user's head to provide a force directed to the outside of 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-shaped portion 11 and the YZ plane when the earphone 10 is in the non-wearing state is greater than the angle formed between the free end of the hook-shaped portion 11 and the YZ plane when the earphone 10 is in the wearing state. The larger the angle formed between the free end of the hook-shaped portion 11 and the YZ plane when the earphone 10 is in the non-wearing state, the better the free end of the hook-shaped portion 11 can press against the user's head when the earphone 10 is in the wearing state, and the greater the force directed to the outside of the head that the user's head can provide at the second contact point A.

[0068] It is worth noting that: when the free end of the hook-shaped portion 11 is pressed against the user's head, in addition to providing a force pointing to the outside of the head at the second contact point A, at least the BC section of the hook-shaped portion 11 will also form another pressing force on the back side of the ear, and can cooperate with the pressing force formed by the retaining portion 13 on the front side of the ear to form a "front and back clamping" effect on the user's ear, thereby improving the wearing stability of the earphone 10.

[0069] Furthermore, the battery 16 can be mainly arranged in the AB section of the hook-shaped portion 11, so as to overcome the self-weight of the retaining portion 13 and its internal movement 14, the main board 15 and other structures, thereby improving the stability of the earphone 10 in wearing. Of course, the surface of the hook-shaped portion 11 in contact with the ear and head of the user can also be set to a frosted surface, a textured surface and other structures to increase the friction between the hook-shaped portion 11 and the ear and head of the user, so as to overcome the self-weight of the retaining portion 13 and its internal movement 14, the main board 15 and other structures, thereby improving the stability of the earphone 10 in wearing. Furthermore, the free end of the hook-shaped portion 11 (especially the area where point A is located) can be deformed, so that when the earphone 10 is in the wearing state, the free end of the hook-shaped portion 11 presses against the user's head and deforms, so that the contact area between the free end of the hook-shaped portion 11 and the user's head becomes larger, thereby improving the comfort and stability of the earphone 10 in wearing. For example: the hook-shaped portion 11 is molded by two-color injection molding, and the elastic modulus of its free end (especially the area where point A is located) is smaller than that of other areas to increase the deformation capacity of the free end. For another example: the free end of the hook-shaped portion 11 is provided with a hole 111, so that it has a hollow structure to increase the deformation capacity of the free end. Among them, the hole 111 can be a through hole and / or a blind hole, and the number can be one or more, and the axial direction can be perpendicular to the contact surface between the free end of the hook-shaped portion 11 and the user's head.

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

[0071] Based on the above detailed description, the present application reasonably and evenly distributes the weight of the earphone 10 on the one hand, so that the ear of the user can serve as a fulcrum to support the earphone 10 when the earphone 10 is in the wearing state; on the other hand, a connecting portion 12 is arranged between the hook portion 11 and the retaining 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 portion 11 to provide the retaining portion 13 with a pressing force on the front side of the ear, thereby making the earphone 10 firmly close to the ear of the user when in the wearing state. Such an arrangement can improve the stability of the earphone 10 in wearing and the reliability of the earphone 10 in sound generation.

[0072] Shared Reference Figures 7 to 11 , Figure 7 is a schematic diagram of the main structure of another embodiment of the headset provided by the present application, Figure 8 yes Figure 7 The left view of the middle earphone. Fig. 9 yes Figure 7 Schematic diagram of the front view of the earphone in the wearing state. Fig.10 yes Figure 7 Schematic diagram of the rear view of the earphone in the wearing state, Fig.11 yes Figure 7 Schematic diagram of the mechanical model of the earphone in the wearing state. It should be noted that: Fig.11 The YZ plane can be considered as the plane where the user's head is located; Fig.11 The middle ABC segment can be regarded as the hook-shaped part. Fig.11 The middle CD segment can be regarded as the connecting part. Fig.11 The DEF section can be regarded as a holding section. Fig.11 Point C can correspond to Figure 1 The area proximal to the middle ear (eg Figure 1 The area shown by the dashed box C in the figure).

[0073] like Figures 4 to 6 As shown, when the earphone 10 is in the wearing state, the ABC segment is mainly located at the back side of the user's ear, the DEF segment 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 a basic wearing posture. The following is an exemplary description of the force applied to the earphone 10 during wearing and its stability, etc.:

[0074] The main difference from the above embodiment is that in this embodiment, Figure 7 and Figure 8 As shown in FIG. 1 , the hook portion 11 is generally closer to the holding portion 13 so that when the earphone 10 is in the wearing state, as shown in FIG. Fig. 9 and Fig.10 As shown, the free end of the hook portion 11 facing away from the connecting portion 12 acts on the back side of the user's ear instead of pressing against the user's head.

[0075] like Fig.11 As shown, 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 (eg Fig.11 In the direction of the end where point A is located, the hook-shaped portion 11 bends toward the back of the ear and forms a first contact point B with the back of the ear, and the retaining portion 13 forms a second contact point F with the front of the ear. Among them, for the earphone 10, in the natural state (that is, the non-wearing 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 wearing state, thereby providing the retaining portion 13 with a clamping force on the front side of the ear. In other words, in the natural 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 thickness of the user's ear, so that the earphone 10 can be clamped on the user's ear like a "clip" in the wearing state.

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

[0077] Furthermore, the hook-shaped portion 11 can also extend in a direction away from the connecting portion 12, that is, the overall length of the hook-shaped portion 11 is extended, so that when the earphone 10 is in the wearing state, the hook-shaped portion 11 can also form a third contact point A with the back side of the ear, and the first contact point B is located between the first connecting point C and the third contact point A, and is close to the first connecting point C. For the earphone 10, in the natural state, the first contact point B and the third contact point A are on a reference plane perpendicular to the extending direction of the connecting portion 12 (such as Fig.11 The distance between the projections on the YZ plane in the middle) is smaller than the distance between the first contact point B and the third contact point A in the reference plane perpendicular to the extension direction of the connecting portion 12 in the wearing state (such as Fig.11 Such a configuration not only allows the free end of the hook-shaped portion 11 to press against the rear side of the user's ear, but also allows the ABC segment to be in a C shape, wherein the third contact point A can be located in the area of ​​the ear near the earlobe, thereby allowing the hook-shaped portion 11 to be in the vertical direction (such as Fig.11 The hook-shaped portion 11 can clamp the user's ear in the vertical direction after the overall length is extended, and the contact area between the hook-shaped portion 11 and the user's ear can also be increased, that is, the friction between the hook-shaped portion 11 and the user's ear is increased, thereby improving the stability of the earphone 10 in wearing.

[0078] See also Fig.12 , Fig.12 It is a schematic diagram of the top structure 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 be further extended and held in the cymba concha and / or the triangular fossa of the ear. In this way, the holding portion 13 can be stopped by the helix of the ear at least in the extending direction of the connecting portion 12, so as to prevent the holding portion 13 from turning outward when the earphone 10 is in the wearing state, thereby improving the stability of the earphone 10 in wearing.

[0080] As an example, Fig.12 As shown, the earphone 10 further includes an extension portion 17, and the extension portion 17 is connected to the holding portion 13. Fig.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 Fig.13 , Fig.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, Fig.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, Fig.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 Fig.14 and Fig.15 , Fig.14 is a structural schematic diagram of another embodiment of the earphone provided by the present application, Fig.15 yes Fig.14 Schematic diagram of the mechanical model of the earphone in the wearing state. It should be noted that: Fig.15 The YZ plane can be considered as the plane where the user's head is located; Fig.15 The middle BC segment can be considered as the hook. Fig.15 The middle CD segment can be regarded as the connecting part. Fig.15 The DEF section can be regarded as the holding section. Fig.15 The middle GH segment can be regarded as an extension. Fig.15 Point C can correspond to Figure 1 The area proximal to the middle ear (eg Figure 1 The area shown by the dashed box C in the figure).

[0086] The main difference from any of the above embodiments is that in this embodiment, Fig.14 As shown, the length of the hook portion 11 is shorter, and the angle between the hook portion 11 and the connecting portion 12 is smaller; the extension portion 17 is connected to the retaining portion 13, and there is a gap between the extension portion 17 and the retaining portion 13, and the gap can be less than or equal to the thickness of the helix of the ear. In this way, when the earphone 10 is in the wearing state, the hook portion 11 cooperates with the connecting portion 12 so that the retaining portion 13 is hung on the front side of the user's ear, and the extension portion 17 can extend into the cymba concha and / or the triangular fossa of the ear to prevent the retaining portion 13 from everting outward, thereby improving the stability of the earphone 10 in wearing. Among them, this embodiment is exemplified by taking the example that the extension portion 17 can extend into the cymba concha of the ear.

[0087] like Fig.15 As shown, point B hooks the depression on the rear side of the ear, and point C serves as a fulcrum, so that the hook-shaped portion 11 can overcome the deadweight of the retaining portion 13, thereby preventing the retaining portion 13 from falling off the ear of the user. At this time, the friction between the hook-shaped portion 11 and the ear can also be increased to improve the stability of the earphone 10 in wearing. Further, point H hooks the helix of the ear, and point G serves as another fulcrum, so that the extension portion 17 can overcome the deadweight of the retaining portion 13, thereby preventing the retaining portion 13 from turning outward from the ear of the user. At this time, the friction between the extension portion 17 and the ear can also be increased to improve the stability of the earphone 10 in wearing.

[0088] Based on the above description, in the wearing state, the earphone 10 can be clamped on the ear. In order to increase the stability and comfort of wearing, the earphone 10 can elastically clamp the ear.

[0089] As an example, in combination Fig.16, the hook-shaped 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-shaped portion 11. The battery portion 113 is at least used to set the battery 16 of the earphone 10, and the battery 16 may be set in a columnar shape. In order to facilitate the setting of structural parts such as the battery 16, the battery portion 113 may be made of a harder 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 that contacts the user's skin may be provided with an elastic coating layer, or sprayed with elastic paint, etc. Furthermore, compared with the battery portion 113, the elastic portion 112 may have a certain elastic deformation ability, so that the hook-shaped portion 11 can be deformed under the action of an external force, and then produce a displacement compared to the retaining portion 13, so as to allow the hook-shaped portion 11 to cooperate with the retaining 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 retaining portion 13, so that the ear can be inserted between the retaining portion 13 and the hook portion 11; after the wearing position is suitable, let go to allow the earphone 10 to elastically clamp the ear; of course, the position of the earphone 10 on the ear can 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 can be greater than or equal to 48%, preferably the aforementioned ratio can be greater than or equal to 60%; the radial dimension of any direction on the cross section of the elastic portion 112 can be less than or equal to 5 mm, preferably the aforementioned radial dimension can be less than or equal to 4 mm. In this way, the elastic portion 112 can be set to a slender structure so that the elastic portion 112 has a better elastic deformation ability, thereby allowing the earphone 10 to better elastically clamp the ear. In addition, the cross-sectional area of ​​the elastic portion 112 is as small as possible, and corresponding wearing space can be left for myopia, hyperopia glasses, or smart glasses such as AR, VR, MR, etc., thereby taking into account other wearing needs of the user. Further, since the hook-shaped portion 11 is mainly hung between the user's head and ear, the cross-section of the elastic portion 112 can be set in a circular or elliptical shape, so that at least the elastic portion 112 can better contact the ear and / or head, and can be as close as possible to the boundary between the ear and the head, thereby increasing the stability of wearing.

[0091] The cross-sectional area of ​​at least a portion of the battery portion 113 may be greater than the maximum cross-sectional area of ​​the elastic portion 112, so that the battery portion 113 can be provided with a battery 16 of larger capacity to increase the endurance of the headset 10. In some embodiments, the battery portion 113 may be provided in a columnar shape, and the ratio of the length to 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 description, the weight and distribution of the earphone 10 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. Fig.17 , in the worn state, and observed from the side of the retaining portion 13 away from the ear, the battery portion 113 may be at least partially located on the side of the first reference plane (denoted as RP1) facing directly in front of the user, wherein the first reference plane passes through the contact point between the retaining portion 13 and the ear (denoted as CP0) and is parallel to the above-mentioned coronal plane. In this way, it is helpful 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 from flipping over due to excessive dead weight and / or the aforementioned excessive moment in the worn state, thereby increasing the wearing stability. Furthermore, the battery portion 113 may also intersect with a second reference plane (denoted as RP2), wherein the second reference plane passes through the first position point (denoted as CP1) of the elastic portion 112 along the above-mentioned vertical axis that is closest to the top of the user's head and is parallel to the above-mentioned coronal plane. Furthermore, the inner edge of the hook-shaped portion 11 and the connecting portion 12 facing the ear has a second position point (denoted as CP2) farthest from the contact point between the retaining portion 13 and the ear, and the battery portion 113 can further intersect with a third reference plane (denoted as RP3), wherein the third reference plane passes through the second position point and is parallel to the above-mentioned coronal plane. The second position point can fall on the connecting portion 12 or on the boundary between the hook-shaped portion 11 and the connecting portion 12, which will be exemplarily described later. In this way, it is beneficial to make the center of gravity of the battery portion 113 and the center of gravity of the retaining portion 13 be located on the same side of the aforementioned first reference plane, thereby increasing the stability of wearing.

[0095] For ease of description, combined with Fig.16 , the holding portion 13 may have a thickness direction, a length direction and a height direction that are orthogonal to each other, and may be marked as "X", "Y" and "Z" respectively. The aforementioned thickness direction is defined as the direction in which the holding portion 13 approaches or moves away from the ear in the worn state, the aforementioned length direction is defined as the direction in which the holding portion 13 approaches or moves away from the front of the user in the worn state, and the aforementioned height direction is defined as the direction in which the holding portion 13 approaches or moves away from the top of the user's head in the worn state. In the worn state, the aforementioned height direction may be parallel to the aforementioned vertical axis, and the aforementioned thickness direction and the aforementioned length direction may be parallel to the aforementioned horizontal plane.

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

[0097] As an example, in combination with Fig.16 and Fig.17 The orthographic projection of the elastic part 112 on the reference plane can partially overlap with the orthographic projection of the holding part 13 on the reference plane, and the orthographic projection of the battery part 113 on the reference plane can be staggered with the orthographic projection of the holding part 13 on the reference plane. In this way, it is beneficial for the holding part 13 and the hook-shaped part 11 to elastically clamp the ear part from the front and rear directions.

[0098] Further, the radius of curvature of the edge of the orthographic projection of the elastic portion 112 and the transition portion 114 on the reference plane toward the ear side can first gradually increase and then gradually decrease in the direction from the connection portion 12 to the hook portion 11 away from the battery portion 113. Among them, the radius of curvature of the aforementioned edge first gradually increases so that the hook portion 11 can better adapt to the contour shape of the back side of the ear; and then gradually decreases so that the degree of curvature of the hook portion 11 close to the battery portion 113 becomes larger, thereby making the battery portion 113 close to the retaining portion 13, which is conducive to the hook portion 11 hooking the back side of the ear to increase the stability of wearing. Further, the radius of curvature of the aforementioned edge can first gradually increase and then gradually decrease in a continuous change manner, or it can first gradually increase and then gradually decrease in a segmented change manner, and of course, the two methods can be combined. For example: the aforementioned edge includes multiple sections, each section has a radius of curvature, and in the direction from the connection portion 12 to the battery portion 113, the radius of curvature of the multiple sections can first gradually increase and then gradually decrease, which can also be called a step-by-step change. In order to increase the wearing stability, the segment with the largest curvature radius among the multiple segments may overlap with the orthographic projection of the retaining portion 13 on the reference plane.

[0099] As an example, the edge of the orthographic projection of the elastic portion 112 and the transition portion 114 on the above-mentioned reference plane toward the ear side may have a first section (denoted as 11A), the starting point of the first section (denoted as CP3) is the connection point between the elastic portion 112 and the connecting portion 12, and the end point (for example, CP1) is the highest point of the elastic portion in the above-mentioned height direction in the wearing state. Wherein, the radius of curvature of the first section may be between 8mm and 10mm. The starting point of the first section may coincide with the second position point, or it may be further away from the connecting portion 12 than the second position point, which will be described exemplarily later. Further, the aforementioned edge of the elastic portion 112 and the transition portion 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 end point of the second section (denoted as CP4) may be between 8mm and 11mm in the above-mentioned length direction and the aforementioned highest point, and the distance between the aforementioned highest point in the above-mentioned height direction may be between 7mm and 10mm. Wherein, the radius of curvature of the second section may be between 9mm and 12mm. Further, the aforementioned edge of the elastic portion 112 and the transition portion 114 may also have a third section (recorded as 11C), the starting point of the third section is the end point of the second section, the end point of the third section (recorded as CP5) may be between 9mm and 12mm in the above-mentioned length direction and the distance between the aforementioned highest point, and the distance between the aforementioned highest point in the above-mentioned height direction may be between 19mm and 21mm. Wherein, the radius of curvature of the third section may be between 29mm and 36mm. Further, the aforementioned edge of the elastic portion 112 and the transition portion 114 may also have a fourth section (recorded as 11D), the starting point of the fourth section is the end point of the third section, the end point of the fourth section (recorded as CP6) may be between 7mm and 10mm in the above-mentioned length direction and the distance between the aforementioned highest point, and the distance between the aforementioned highest point in the above-mentioned height direction may be between 25mm and 32mm. The radius of curvature of the fourth section may be between 19 mm and 25 mm. Furthermore, the aforementioned edges of the elastic portion 112 and the transition portion 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, the distance between the end point of the fifth section (denoted as CP7) and the aforementioned highest point in the aforementioned length direction may be less than or equal to 2 mm, and the distance between the end point of the fifth section (denoted as CP7) and the aforementioned highest point in the aforementioned height direction may be between 30 mm and 38 mm. The radius of curvature of the fifth section may be between 9 mm and 13 mm. At this time, the fifth section may be provided with the aforementioned contoured depression, and the radius of curvature of the aforementioned contoured 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 orthographic projection of the elastic part 112 on the reference plane and the upper edge of the retaining 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 orthographic projection of the elastic part 112 on the reference plane and the lower edge of the retaining part 13. At this time, the orthographic projection of the third section on the reference plane can all fall on the retaining part 13. Further, in combination with Fig.28 , the boundary between the elastic portion 112 and the transition portion 114 may be located in the fourth section. Accordingly, the starting point of the section of the hook portion 11 close to the connecting portion 12 may be the boundary between the hook portion 11 and the connecting portion 12, and the end point may be another intersection point between the orthographic projection of the elastic portion 112 on the reference plane and the lower edge of the retaining portion 13.

[0101] Combination Fig.19 The hook-shaped portion 11 may 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 portion 12, and the other end is connected to the battery compartment 1161. The wire 117 may extend from the battery compartment 1161 to the connecting portion 12 and the retaining portion 13 along with the elastic metal wire 115. The elastic metal wire 115 enables the hook-shaped portion 11 to have a certain elastic deformation ability. The battery compartment 1161 is at least used to set the battery 16. The wire 117 is at least used to achieve electrical connection between the battery compartment 1161 and the electronic components in the retaining portion 13. Furthermore, the hook-shaped portion 11 may also include an elastic coating 118, such as silica gel. The elastic coating 118 at least covers the elastic metal wire 115 and the wire 117 to increase the appearance quality and wearing comfort. Among them, the cross-sectional area of ​​the battery compartment 1161 can be greater than the sum of the cross-sectional areas of the elastic part 112 formed by the elastic metal wire 115 and the elastic sheath 118, and preferably can also be greater than the sum of the cross-sectional areas of the elastic metal wire 115, the conductor 117 and the elastic sheath 118.

[0102] Furthermore, the hook-shaped portion 11 may also include a transition piece 1162 connected to the elastic metal wire 115, so that the elastic metal wire 115 is connected to the battery compartment 1161 through the transition piece 1162. For example: the transition piece 1162 and the elastic metal wire 115 are formed by a metal insert injection molding process, and the battery compartment 1161 is set as a cylindrical structure with one end open, so as to facilitate the placement of structural parts such as the battery 16, and the transition piece 1162 is buckled with the open end of the battery compartment 1161. Of course, in some other embodiments, the transition piece 1162 and the battery compartment 1161 can be integrally formed, and the end of the battery compartment 1161 away from the transition piece 1162 can be set to an open shape and can be sealed by a cover plate. Among them, the cross-sectional area of ​​the transition piece 1162 can gradually increase along the length of the hook-shaped portion 11 and in the direction away from the connecting portion 12. Correspondingly, the elastic covering body 118 can also cover the transition piece 1162. The above-mentioned contoured depression may be formed in the transition piece 1162 and manifested through the elastic covering body 118. In other words, the transition piece 1162 may be provided with a contoured depression corresponding to the rear profile of the ear on the side facing the ear, and on the reference cross section arranged along the central axis of the battery compartment 1161, the curvature radius of the above-mentioned contoured depression may be smaller than the curvature radius of the other side of the transition piece 1162 away from the ear, that is, the curvature degree of the above-mentioned contoured depression is greater, so that the transition part 114 can avoid the bulge on the rear side of the ear.

[0103] Based on the above description, combined with Fig.28 For the hook-shaped portion 11, the elastic portion 112 may correspond to the portion of the elastic wire 115 exposed from the connecting portion 12 and the transition piece 1162, and may mainly include the elastic coating 118 and the elastic wire 115 and the wire 117 coated therein; the battery portion 113 may correspond to the portion 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 portion of the transition piece 1162, and may mainly include the elastic coating 118 and the transition piece 1162 coated therein. In other words, the length of the elastic portion 112 may be the length of the portion of the elastic wire 115 exposed from the connecting portion 12 and the transition piece 1162 and coated by the elastic coating 118.

[0104] Furthermore, the earphone 10 may also include a processing circuit and a detection member 1163 coupled to the processing circuit, wherein the detection member 1163 is used to detect whether the hook portion 11 is hung between the back side of the ear and the head, and the processing circuit is used to determine whether the earphone 10 is in a wearing state according to the detection result of the detection member 1163. The processing circuit may be integrated on the main board 15, and the detection member 1163 may be any one or a combination of a capacitor, an inductor, and a resistor sensing element disposed on the side of the hook portion 11 (e.g., the transition member 1162 or the battery compartment 1161) facing the ear. As an example, the detection member 1163 may be a capacitive sensing element and may be disposed in a contoured recess of the transition member 1162.

[0105] In some application scenarios, when the detection element 1163 detects that the earphone 10 is in the wearing state, the processing circuit generates a first control signal for controlling the earphone 10 to switch to the playing state; when the detection element 1163 does not detect that the earphone 10 is in the wearing state, the processing circuit generates a second control signal for controlling the earphone 10 to switch to the pause state. In this way, the power 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 are communicatively connected. For example, the first earphone and the second earphone are worn on the left and right ears of the user, respectively, and they are both provided with a detection element 1163. Among them, the processing circuit judges and selects one of them as the main earphone that is communicatively connected to the audio source device (such as a mobile phone, a tablet computer, and a smart watch, etc.) according to the detection results of the detection element 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 according to the established rules to communicate with the audio source device, and the other can be selected as the slave earphone to communicate with the main earphone; and when the user only uses one of the two earphones, the earphone used is used as the main earphone.

[0107] Combination Fig.16 and Fig.18, the side of the retaining portion 13 facing the ear may include a first area 13A and a second area 13B, and the second area 13B may be farther away from the connecting portion 12 than the first area 13A, that is, the second area 13B may be located at the free end of the retaining portion 13 away from the connecting portion 12. Based on the above-mentioned related description, the section of the hook-shaped portion 11 close to the connecting portion 12, such as the elastic portion 112, may overlap with the second area 13B in the orthographic projection along the above-mentioned thickness direction. Further, the first area 13A is provided with a sound outlet hole 1311, and the second area 13B may protrude toward the ear compared to 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 retaining portion 13 may be set as a convex hull structure at its free end. In this way, since the movement 14 can generate sound transmitted to the ear through the sound outlet hole 1311, the aforementioned convex hull structure can prevent the ear from blocking the sound outlet hole 1311, thereby causing the sound generated by the movement 14 to be weakened or even unable to be output. As an example, in the 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 the sound hole 1311 is only spaced from the ear in the wearing state, the second area 13B protruding toward the ear compared to the first area 13A can also be other areas of the retaining portion 13, such as the area between the sound hole 1311 and the connecting portion 12. Furthermore, since the concha cavity and the hymena concha have a certain depth and are connected to the ear hole, the orthographic projection of the sound hole 1311 on the ear along the thickness direction can at least partially fall into the concha cavity and / or the hymena concha. As an example, the retaining portion 13 can be located on the side of the ear hole close to the top of the user's head and in contact with the antihelix; at this time, the orthographic projection of the sound hole 1311 on the ear along the thickness direction can at least partially fall into the hymena concha.

[0108] Furthermore, combined with Fig.16 and Fig.33, the holding portion 13 can form the front cavity 200 and the rear cavity 300 of the earphone 10 on opposite sides of the movement 14, and the sound outlet hole 1311 is connected to the front cavity 200 and outputs sound to the ear. Among them, the holding portion 13 can also be provided with a pressure relief hole 1312 connected to the rear cavity 300, and the pressure relief hole 1312 is farther away 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 of air pressure in the front cavity 200 can be as far as possible. Blocked by the rear cavity 300, thereby improving the sound quality of the sound output to the ear through the sound outlet hole 1311. Not only that, because 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 are anti-phase canceled 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 between the center of the pressure relief hole 1312 and the center of the sound outlet hole 1311 and the above-mentioned thickness direction can be between 0° and 50°; preferably, the aforementioned angle can be between 0° and 40°. Furthermore, the retaining portion 13 can also be provided with a sound adjustment hole 1313 connected to the rear cavity 300. The sound adjustment hole 1313 can be used to destroy the high-pressure area of ​​the sound field in the rear cavity 300, so that the wavelength of the standing wave in the rear cavity 300 becomes shorter, thereby making the resonant frequency of the sound output to the outside of the earphone 10 through the pressure relief hole 1312 as high as possible, for example, greater than 4kHz, to reduce sound leakage. Preferably, the sound adjustment hole 1313 and the pressure relief hole 1312 can be located on opposite sides of the movement 14, for example, arranged opposite to each other in the above-mentioned height direction, in order to destroy the high-pressure area of ​​the sound field in the rear cavity 300 to the greatest extent. The opening direction of the pressure relief hole 1312 may be toward the top of the user's head, for example, the angle between its opening direction and the vertical axis is between 0° and 10°, so as to allow the pressure relief hole 1312 to be further away from the ear hole than the sound adjustment hole 1313, thereby making it 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 may have a first center in the above-mentioned length direction, and the sound adjustment hole 1313 may have a second center in the above-mentioned length direction, and the second center may be further away 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 adjustment hole 1313 and the sound outlet hole 1311, thereby reducing 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. In other words, the orthographic projection of the sound tuning hole 1313 along the height direction and the orthographic projection of the second area 13B along the thickness direction may at least partially intersect, so as to be as far away from the sound outlet hole 1311 as possible.

[0109] In short, when the user wears the earphone 10, he mainly listens to the sound transmitted to the ear hole through the sound outlet hole 1311, and other acoustic holes such as the pressure relief hole 1312 and the sound adjustment hole 1313 are mainly used to make the sound sound as good as possible with bass diving and treble penetration. Fig.18 L1 in the figure) and the dimension of the end of the rear cavity 300 close to the pressure relief hole 1312 in the above length direction (for example Fig.31 The ratio between the two (as shown in L2) can be greater than or equal to 0.9, and the dimensional relationship between the two in the above-mentioned thickness direction can also be the same or similar, so that the rear cavity 300 is connected with the outside of the earphone 10 over as large an area as possible, so as to minimize the blockage of the rear cavity 300 to the front cavity 200, and the resonant frequency of the sound output to the outside of the earphone 10 through the pressure relief hole 1312 can be shifted to high frequency as much as possible.

[0110] It should be noted that: since the movement housing 131 and other structural parts have a certain thickness, the sound outlet hole 1311, the pressure relief hole 1312 and the sound adjustment hole 1313 opened on the movement housing 131 have a certain depth, and then relative to the accommodation cavity formed by the movement housing 131, the hole described in this application has an inlet end close to the aforementioned accommodation cavity and an outlet end away from the aforementioned accommodation cavity. The partition 137 mentioned later and the connecting hole opened thereon are similar to this, and will not be repeated here.

[0111] Combination Figures 16 to 18 , in a natural state, and when the earphone 10 is viewed from the side facing the top of the user's head when worn, for example, when viewed along the height direction, the holding portion 13 is at least spaced apart from the section of the hook-shaped portion 11 close to the connecting portion 12 in the thickness direction, and the connecting portion 12 may be arranged in an arc shape and connected between the holding portion 13 and the hook-shaped portion 11. In this way, the connecting portion 12 may always space the holding portion 13 located at the front side of the ear and the hook-shaped portion 11 located at the back side of the ear from each other at least in the section close to the connecting portion 12 in the thickness direction, so that the earphone 10 can bypass the upper ear root and the tissues near the upper ear root when worn, thereby preventing the earphone 10 from excessively clamping the helix near the upper ear root and causing discomfort.

[0112] As an exemplary embodiment, the connecting portion 12 and the retaining portion 13 can be connected along the above-mentioned length direction. Among them, at least part of the connecting portion 12 can extend away from the free end of the retaining portion 13 in both the above-mentioned length direction and the above-mentioned height direction in the direction from one end of the connecting retaining portion 13 to the other end of the connecting hook portion 11, so that it is convex toward one side of the user's face as a whole, so that the height difference between the hook portion 11 and the retaining portion 13 in the above-mentioned height direction can be eliminated in a smooth transition manner. Of course, at least part of the connecting portion 12 can also extend away from the free end of the retaining portion 13 in the above-mentioned length direction in the direction from one end of the connecting retaining portion 13 to the other end of the connecting hook portion 11. Not only that, the connecting portion 12 itself or together with the section of the hook portion 11 close to the connecting portion 12 can also extend away from the free end of the retaining portion 13 in the above-mentioned thickness direction, so that the retaining 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, combined with Fig.23 and Fig.24 , the connecting portion 12 can also extend from one end of the connecting holding portion 13 to the other end of the connecting hook portion 11 further along the length direction close to the free end of the holding portion 13 and at the same time extend away from the free end of the holding portion 13 along the height direction, that is, the connecting portion 12 itself forms a circuitous extension structure in three-dimensional space. In some other embodiments, combined with Fig.28 and Fig.29 , the connecting portion 12 can extend only in the above-mentioned length direction and the above-mentioned height direction away from the free end of the holding portion 13 in the direction from one end of the connecting holding portion 13 to the other end of the connecting hook portion 11, that is, forming 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) can continue to extend in the above-mentioned length direction close to the free end of the holding portion 13 and in the above-mentioned height direction away from the free end of the holding portion 13 in the direction away from the connecting portion 12, that is, forming 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 other other embodiments, the aforementioned circuitous extension structure may also have only the first half or the second half.

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

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

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

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

[0117] Combination Fig. 20 and Fig.18 , the retaining portion 13 may include a movement housing 131 connected to the connecting portion 12, and the movement 14, the mainboard 15 and other structural parts may be fixed in the accommodating space of the movement housing 131. As an example, the movement housing 131 may include a first housing 1314 and a second housing 1315 that are relatively 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 relatively 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 buckled with the first housing 1314 and enclosed with the movement 14 to form a rear cavity 300. Correspondingly, the sound outlet hole 1311 can be arranged on the first shell 1314, for example, on the side facing the ear; the pressure relief hole 1312 and the sound adjustment hole 1313 can be arranged on opposite sides of the second shell 1315, for example, the two are arranged opposite to each other in the above-mentioned height direction. Based on the above-mentioned 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 shell 1315 in the above-mentioned length direction can be greater than or equal to 0.55; preferably, the above-mentioned ratio is between 0.8 and 1, so that the rear cavity 300 is connected to the outside of the earphone 10 with as large an area as possible while taking into account the structural strength of the second shell 1315.

[0118] In some embodiments, in combination Fig. 20, the connecting portion 12 may include a third shell 122 connected to the end of the elastic metal wire 115 away from the battery compartment 1161, for example, the two are formed by a metal insert injection molding process. Among them, the dimensions of the second shell 1315 and the third shell 122 in the above-mentioned length direction are smaller than those of the first shell 1314, and the dimension of the second shell 1315 can be much larger than that of the third shell 122. In this way, the second shell 1315 is engaged with the first shell 1314, and the orthographic projection in the above-mentioned thickness direction overlaps with the first shell 1314, and the third shell 122 is engaged with the part of the first shell 1314 located outside the orthographic projection of the second shell 1315. In short, the third shell 122 can be engaged with the same side of the second shell 1315 and the first shell 1314, and most of the first shell 1314 is used as the shell of the retaining portion 13, and a small part also serves as the shell of the connecting portion 12. In a specific embodiment, the ratio of the maximum dimension of the third shell 122 in the above-mentioned length direction to the dimension of the second shell 1315 in the above-mentioned length direction may be less than or equal to 0.4.

[0119] Based on the above description, combined with Fig.23 and Fig.24 , in a natural state, and when the headset 10 is viewed from the side facing the top of the user's head when worn, for example, when viewed along the height direction, the first shell 1314 and the elastic wire 115 are spaced apart in the thickness direction, and the third shell 122 can be arranged in an arc shape and connect the first shell 1314 and the elastic wire 115, so as to allow the retaining portion 13 located at the front side of the ear and the hook-shaped portion 11 located at the back side of the ear to be spaced apart from each other in the thickness direction at least in the section close to the connecting portion 12. Further, the third shell 122 can extend away from the second shell 1315 in both the length direction and the height direction in the direction from one end connected to the first shell 1314 to the other end connected to the elastic wire 115, and then approach the second shell 1315 in the length direction and extend away from the second shell 1315 in the height direction, so as to allow the height difference between the hook-shaped portion 11 and the retaining portion 13 in the height direction to be eliminated in a smooth transition manner. At this time, the second position point can fall on the connecting portion 12, and the starting point of the first section can be farther away from the connecting portion 12 than the second position point. Among them, the part of the first shell 1314 that also serves as the shell of the connecting portion 12 can have the same or similar change trend as the third shell 122. In this way, the connecting portion 12 itself can form a structure that extends in a circuitous manner in three-dimensional space. Because of this, combined with Fig.24 There is a parting line (denoted as PL1) between the third shell 122 and the first shell 1314. The two are molded separately and then buckled together 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.

[0120] In some embodiments, in combination Fig. 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 Fig.28 and Fig.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. Fig.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 shells of the connecting portion 12 and the retaining portion 13 may be divided in other ways. For example, the shell of the retaining portion 13 may be divided into two shells with substantially equal orthographic projection areas along the above-mentioned thickness direction, and the shell of the connecting portion 12 may be divided into two along the above-mentioned inflection point, or only one shell and the other shell may be served by the elastic metal wire 115, and the shells may be assembled accordingly.

[0123] Based on the above description, combined with Fig. 20 and Fig.18 , since the retaining portion 13 needs to contact the front side of the ear, especially the free end of the retaining portion 13 also needs to form a contact point (e.g., CP0) with the ear, such as the antihelix. Based on this, a flexible coating structure 132 can be provided on the side of the core shell 131 facing the ear, and at least avoid the sound outlet hole 1311, for example, the flexible coating structure 132 is provided with a through hole corresponding to the sound outlet hole 1311. Among them, the Shore hardness of the flexible coating structure 132 is less than the Shore hardness of the core shell 131, so that the retaining portion 13 contacts the ear through the flexible coating structure 132, that is, the flexible coating structure 132 is elastically supported between the core shell 131 and the ear, thereby improving the wearing comfort. Further, based on the division and splicing method of the shells of the connecting portion 12 and the retaining portion 13, in order to increase the appearance quality of the earphone 10, the flexible coating structure 132 can be directly attached to the first shell 1314 and the third shell 122, etc. by injection molding, and of course, it can also be coated by gluing. Among them, since the hook-shaped portion 11 may also be provided with an elastic covering body 118, the elastic covering body 118 and the flexible covering structure 132 may be formed by a single injection molding process, or may be formed separately by two injection molding processes; the materials of the two may also be the same or different. Based on this, unless otherwise specified, this application mainly examines the part of the flexible covering structure 132 and the elastic covering body 118 that contacts the user's skin.

[0124] In some embodiments, the flexible coating structure 132 may be at least partially disposed on the side of the retaining portion 13 away from the free end of the connecting portion 12 and facing the ear, that is, the second area 13B. Accordingly, the orthographic projection of the elastic portion 112 on the above-mentioned reference plane (e.g., the plane where YZ is located) and the orthographic projection of the flexible coating structure 132 on the above-mentioned reference plane may partially overlap. Further, the thickness of the flexible coating structure 132 may be designed differently, for example, the flexible coating structure 132 corresponding to the second area 13B is relatively thicker, so that the free end of the retaining portion 13 can be raised toward the ear and have good softness. Of course, if only the second area 13B is raised toward the ear compared to the first area 13A, then the first shell 1314 can also be designed differently in thickness on the side facing the ear. Based on this, the first shell 1314 may also include a first area and a second area to correspond one to one with the first area 13A and the second area 13B on the side of the retaining portion 13 facing the ear.

[0125] Furthermore, the side of the flexible coating structure 132 facing the movement housing 131 may be recessed with at least one blind hole 1321 spaced apart from each other, and the blind hole 1321 may be mainly used to provide deformation space for the flexible coating structure 132, so as to allow the flexible coating structure 132 to produce more deformation under pressure when worn, thereby further improving the wearing comfort. In some embodiments, the number of blind holes 1321 may be multiple, for example, at least two, and they may be spaced apart from each other to form bone positions to support their own structure, thereby making it have both elastic deformation and structural strength. Of course, in some other embodiments, the number of blind holes 1321 may also be only one, in which case the elastic modulus, thickness of the flexible coating structure 132, and the size of the blind hole 1321 and other parameters may also be controlled to make it have both elastic deformation and structural strength. In order to make the flexible coating structure 132 have a blind hole 1321, the core shell 131, specifically the part of the first shell 1314 corresponding to the second area 13B, can be provided with a through hole 13141 corresponding to and connected with the blind hole 1321, and the through hole 13141 is used for inserting the molding core of the flexible coating structure 132. At this time, the plurality of through holes 13141 can make the part of the first shell 1314 corresponding to the second area 13B be arranged in a honeycomb or grid shape, so as to take into account the structural strength of the first shell 1314 in this area and the support for the flexible coating structure 132. Further, the outer side of the first shell 1314 can also be provided with a protrusion surrounding the through hole 13141 along the honeycomb or grid structure, and the protrusion can be embedded in the flexible coating structure 132; and / or, the flexible coating structure 132 is partially embedded in the through hole 13141, so as to increase the bonding area between the flexible coating structure 132 in the second area 13B and the first shell 1314, thereby increasing the bonding strength between the two. Based on this, the first shell 1314 can be left with a corresponding through hole 13141 during the molding process, and the molding core of the flexible coating structure 132 can be inserted into the through hole 13141 after the molding is completed, wherein the molding core can protrude from the first shell 1314, and the maximum protrusion height can depend on the actual requirements of the convex structure; then the flexible coating structure 132 can be directly molded on the first shell 1314 through an injection molding process, and then the molding core can be pulled out. Correspondingly, the retaining portion 13 can also include a cover plate 1316 arranged in the movement shell 131, for example, the cover plate 1316 is fixedly arranged on the inner side of the first shell 1314 away from the flexible coating structure 132 to close the through hole 13141, thereby allowing the first shell 1314 and the cover plate 1316 to surround the movement 14 to form a front cavity 200. Among them, the cover plate 1316 can be supported on the honeycomb or grid structure of the first shell 1314.

[0126] As an example, a first flange 13142 may be provided on the inner wall surface of the first shell 1314 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 away from the flexible covering structure 132, and the two ends of the second flange 13161 and the two ends of the first flange 13142 may extend oppositely to form an annular flange. At this time, the movement 14 can be supported on the annular flange to form the front cavity 200. Among them, the first shell 1314 may be provided with a sink in the second area 13B, and the cover plate 1316 may be embedded in the sink to allow the inner wall surface of the cover plate 1316 to be flush with the inner wall surface of the first shell 1314 away from the flexible covering structure 132, so as to make the inner cavity surface of the front cavity 200 as flat as possible. Furthermore, a glue point groove may be provided on the inner wall surface of the first shell 1314 away from the flexible covering structure 132, and the glue point groove may be located at the edge of the aforementioned sink groove and surround the plurality of through holes 13141, and the cover plate 1316 may be glued to the first shell 1314 through the colloid in the glue point groove. In short, the first flange 13142 and the glue point groove are both provided on the inner side of the first shell 1314 away from the flexible covering structure 132, but the former may mainly correspond to the first area 13A, and the latter may mainly correspond to the second area 13B.

[0127] It should be noted that: in other embodiments such as the flexible covering structure 132 does not have the blind hole 1321, or in other embodiments such as the flexible covering structure 132 is first formed separately and then glued to the movement housing 131, the first housing 1314 may not be provided with the through hole 13141, and the corresponding cover plate 1316 may not be provided. In this case, the first flange 13142 may be a complete annular flange, and the movement 14 is supported on the annular flange to form the front cavity 200.

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

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

[0130] As an example, the Shore hardness of the inner flexible body 1322 may be smaller than the Shore hardness of the outer flexible body 1323 to allow the portion of the flexible coating structure 132 corresponding to the second area 13B to be softer. Among them, a blind hole 1321 may be recessed on one side of the outer flexible body 1323 facing the core shell 131, and the inner flexible body 1322 may be arranged in the blind hole 1321 and contact the outer flexible body 1323. In other words, the blind hole 1321 may be provided in the outer flexible body 1323 to accommodate the softer inner flexible body 1322. Specifically, a through hole 13141 may be provided in the portion of the first shell 1314 corresponding to the second area 13B, and the through hole 13141 is used for inserting the molding core of the outer flexible body 1323. At this time, the outer flexible body 1323 can be formed on the first shell 1314 by an injection molding process, and the molding core is pulled out after the outer flexible body 1323 is molded, so that the outer flexible body 1323 forms a corresponding blind hole 1321, thereby forming a receiving area, and the inner flexible body 1322 can be arranged in the blind hole 1321 through the through hole 13141, that is, arranged in the receiving area, and then the through hole 13141 can be closed by the cover plate 1316. The 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 of the aforementioned receiving area. Further, the number of blind holes 1321 can be one, and the number of through holes 13141 can also be one. At this time, when the opening area of ​​the through hole 13141 is large, the cover plate 1316 can extend to overlap with the first shell 1314 in the first area 13A to increase the support area of ​​the first shell 1314 for the cover plate 1316. Among them, the cover plate 1316 may be provided with a connecting hole 13162 connecting the sound outlet hole 1311 and the front cavity 200 to avoid blocking the sound outlet hole 1311. In a specific embodiment, the material of the outer flexible body 1323 may be 30-50 degree silicone, and the material of the inner flexible body 1322 may be 0 degree silicone, and it can be formed in the aforementioned accommodation area by a glue dripping process. In another specific embodiment, the material of the outer flexible body 1323 may be 30-50 degree silicone, and the material of the inner flexible body 1322 may be 0-10 degree silicone, and it can be pre-formed into a block and filled in the aforementioned accommodation area. Of course, in the case where the inner flexible body 1322 can withstand the impact force during the molding process of the outer flexible body 1323, the first shell 1314 may not be provided with the through hole 13141, and the corresponding cover plate 1316 may not be provided.

[0131] Based on the above detailed description, the first shell 1314, the outer flexible body 1323, the inner flexible body 1322 and the cover plate 1316 and other structural parts can form a shell assembly, that is, modular, to facilitate assembly.

[0132] Combination Fig.16The 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 and 133 may be electrically connected to the mainboard 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, the distance between the two microphones 125 and 133 is as large as possible when the size of the earphone 10 is relatively determined, so that interference between the two microphones 125 and 133 can be avoided, and the sound pickup effect and / or noise reduction effect of the earphone 10 can be increased. Further, the 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 can 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 rectangular shape on the above-mentioned reference plane, the two microphones 125 and 133 can be arranged roughly along the diagonal line of the movement 14.

[0133] In some embodiments, the microphone 125 can be arranged on the connecting portion 12, and the microphone 133 can be arranged on the free end of the retaining portion 13 away from the connecting portion 12. At this time, the microphone 125 can 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 headset 10 can also include a processing circuit, which can be integrated on the main board 15, and the microphone 125 can be used as the main microphone, the microphone 133 can be used as the auxiliary microphone, and the sound signal collected by the auxiliary microphone can be used to perform noise reduction processing on the sound signal collected by the main microphone, thereby increasing the sound pickup effect. Of course, at least one of the two microphones 125 and 133 can also be used to perform noise reduction processing on the sound output by the headset 10 to the ear, or only one microphone can be set for sound pickup or noise reduction.

[0134] As an example, 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. The third housing 122 and the second housing 1315 may each be provided with a through hole on one side away from the first housing 1314 for the microphone to collect sound.

[0135] In some other embodiments, the headset 10 may also include a stick microphone 134 that is detachably connected to the free end of the holding portion 13 or the hook portion 11 away from the connecting portion 12 (that is, the battery portion 113), and the free end of the stick microphone 134 may be provided with a microphone 1341 that is electrically connected to the motherboard 15. In this way, compared with the microphone 125 and the microphone 133, the stick microphone 134 can make the microphone 1341 closer to the user's mouth, which is beneficial to increase the sound pickup effect. Among them, the present application takes the detachable connection between the stick microphone 134 and the holding portion 13 as an example for exemplary description. For example, the main rod 1342 of the stick microphone 134 is detachably connected to the second shell 1315 by means of a snap or magnetism, and for another example, the main rod 1342 is detachably connected to the second shell 1315 by means of a type-C plug-in method to shorten the wiring distance between the microphone 1341 and the motherboard 15.

[0136] Further, in addition to the microphone 1341 on the stick microphone 134, the headset 10 may also be provided with other microphones, such as microphone 125 and / or microphone 133. Among them, the processing circuit can use microphone 1341 as the main microphone when the stick microphone 134 is connected to the holding part 13, and use at least one of microphone 133 and microphone 125 as the auxiliary microphone, and can 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. Correspondingly, the processing circuit can switch microphone 133 and microphone 125 to an enabled state when the stick microphone 134 is separated from the holding part 13, and use one of microphone 133 and microphone 125 as the main microphone and the other as the auxiliary microphone. Of course, the processing circuit can also switch at least one of microphone 133 and microphone 125 to a disabled state when the stick microphone 134 is connected to the holding part 13, so as to save power while taking into account sound pickup and / or noise reduction.

[0137] Combination Fig.16 and Fig.17, the earphone 10 may also include a first charging electrode 126 disposed on the retaining 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 being used as a positive charging electrode, and the other being used as a negative charging electrode. Among them, the present application uses the first charging electrode 126 as a positive charging electrode and the second charging electrode 1164 as a negative charging electrode as an example for exemplary description. 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 conducive to preventing short circuits between the charging electrodes caused by sweat, water droplets, dust, etc. Of course, in the case of satisfying the anti-short circuit, the two charging electrodes can also be disposed on one of the hook portion 11, the connecting portion 12 and the retaining portion 13. Furthermore, 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] As an example, the first charging electrode 126 can be arranged on the connecting portion 12, and the second charging electrode 1164 can be arranged on the battery portion 116. Specifically, the first charging electrode 126 can be at least partially arranged on the periphery of the second shell 1315, for example, between the third shell 122 and the first shell 1314. Correspondingly, the second charging electrode 1164 can be arranged on 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 columnar shape, and the second charging electrode 1164 can be arranged in a strip shape, and its length direction can extend along the circumference of the battery compartment 1161. Furthermore, the first shell 1314 and the battery compartment 1161 can be respectively provided with through holes that allow the charging electrode to be exposed, so as to facilitate the contact between the charging electrode and the output electrode on the charging box. 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: multiple, for example, two, first charging electrodes 126 can be arranged at intervals on the connecting portion 12, so that after one of them fails, the other can still be used. Furthermore, a magnetic attraction member such as a magnet can be provided near each of the two charging electrodes to allow the earphone 10 to make good contact with the output electrode on the battery box by magnetic attraction. Among them, for the charging box, the relative position of the output electrode thereon can be adjusted with the change of the charging electrode on the earphone 10.

[0140] Combination Fig.21 Since the second shell 1315 is further away from the ear than the first shell 1314 , the second shell 1315 can be provided with interactive components such as physical buttons, a display screen, a touch circuit board, etc., to facilitate the user to interact with the headset 10.

[0141] As an example, the second housing 1315 may include a bottom wall 13151 arranged opposite to the first housing 1314 and a side wall 13152 connected to the bottom wall 13151, and the side wall 13152 extends toward the first housing 1314. Among them, a flexible touch circuit board 135 electrically connected to the mainboard 15 is provided on the side of the bottom wall 13151 facing the first housing 1314, and the flexible touch circuit board 135 can be based on any one of capacitive, resistive, pressure-sensitive, etc., which is not limited here. In this way, the interaction of the earphone 10 can be achieved without setting additional through holes on the core housing 131, thereby increasing the waterproof and dustproof performance. Specifically, the flexible touch circuit board 135 may include a touch portion 1351 for receiving a touch operation and an electrical connection portion 1352 for connecting to the mainboard 15, for example, the flexible touch circuit board 135 can be buckled with the mainboard 15 by means of a BTB connector. Among them, the area of ​​the touch portion 1351 relative to the bottom wall 13151 can be greater than or equal to 70%. Based on the above description, the side of the side wall 13152 close to the third shell 122 can be open to facilitate the splicing of the second shell 1315 and the third shell 122. The pressure relief hole 1312 and the sound adjustment hole 1313 can be provided on the side wall 13152 and can be located on opposite sides of the open end.

[0142] Furthermore, the bottom wall 13151 may be provided with a groove 13153, and the touch portion 1351 may be attached to the bottom of the groove 13153. In this way, the second shell 1315 is equivalent to being partially thinned to increase the sensitivity of the flexible touch circuit board 135. In addition, the mainboard 15 may also be connected to the second shell 1315, and the flexible touch circuit board 135 may be pressed against the bottom wall 13151 through an elastic pad 1353, so that the touch portion 1351 is in close contact with the bottom wall 13151, and the touch portion 1351 may be prevented from being crushed. Among them, the depth of the groove 13153 may be greater than or equal to the thickness of the touch portion 1351, and less than the sum of the thickness of the touch portion 1351 and the elastic pad 1353, so as to increase the pressing effect.

[0143] In some embodiments, the bottom wall 13151 may be provided with a plurality of hot melt columns 13154, for example, three, located at the periphery of the sink 13153 and extending toward the main board 15. The line connecting the orthographic projections of at least two of the multiple hot melt columns 13154 on the bottom wall 13151 may pass through the orthographic projections of the touch portion 1351 on the bottom wall 13151; accordingly, the main board 15 may be provided with connection holes corresponding to the hot melt columns 13154, so as 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 in a rectangular shape, at least two hot melt columns 13154 may be arranged substantially along the diagonal line of the touch portion. In this way, the uniformity of the force distribution of the main board 15 is increased. Of course, in some other embodiments, the hot melt columns 13154 may also be replaced with screws, buckles, etc., which are not limited here.

[0144] Based on the above-mentioned related description, the microphone 133 can be directly set on the side of the mainboard 15 away from the bottom wall 13151 through the SMT process. Correspondingly, the bottom wall 13151 can be provided with a flange 13155 located on the periphery of the sink 13153, the flange 13155 extends toward the mainboard 15, and has a sound pickup hole connected to the outside of the earphone 10. At this time, the mainboard 15 can be pressed on the flange 13155 to allow the microphone 133 to collect sound signals through the sound pickup hole. Among them, a silicone sleeve 13156 can also be set on the flange 13155 to allow the mainboard 15 to be elastically supported on the flange 13155 through the silicone sleeve 13156. In this way, not only the sealing of the sound path of the microphone 133 can be increased, but also the uniformity of the force distribution of the mainboard 15 can be increased.

[0145] Furthermore, a metal antenna pattern may be provided on the second housing 1315 to serve as a communication antenna for the headset 10. Accordingly, an antenna contact 13157 may be provided on the bottom wall 13151 and is located at the periphery of the sink 13153 and is electrically connected to the metal antenna pattern, and a metal spring for elastically abutting against the antenna contact 13157 may be provided on the mainboard 15. In short, the mainboard 15 may be connected to the antenna contact 13157 through the metal spring thereon to avoid unnecessary welding, thereby reducing the difficulty of assembly and saving the internal space of the movement housing 131.

[0146] In summary, the connection between the main board 15 and the second shell 1315 can not only achieve its own fixation, but also achieve the pressing and holding 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, thus achieving multiple goals at one stroke.

[0147] Based on the above description, combined with Fig.21 and Fig. 27, the electronic components arranged in the hook-shaped portion 11 can be electrically connected to the main board 15 through the wire 117, and the electronic components arranged in the connecting portion 12 can be directly electrically connected to the main board 15 through their leads because they are relatively close to the main board 15. Among them, the wire 117 can be arranged in multiple strands, and can include the positive lead and the negative lead of the battery 16, the signal line and the shielding line of the detection element 1163, and the negative lead of the second charging electrode 1164; of course, the shielding line of the detection element 1163 can also be reused as a lead with the lead of the second charging electrode 1164 to simplify the routing. Furthermore, since the size of the main board 15 is limited and there are many electronic components integrated thereon, the wire 117 or other leads can be first welded on a flexible circuit board 136, and then connected to the main board 15 through the flexible circuit board 136, which is conducive to expanding the size of the pads and the spacing between them, thereby reducing the difficulty of welding and increasing the reliability of welding.

[0148] As an example, the flexible circuit board 136 may 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 may be arranged along the main surface of the main board 15, so that the flexible circuit board 136 is snap-fitted and connected to the main board 15. Further, the first connection area 1361 may be bent laterally toward the main board 15 relative to the second connection area 1362, and may be provided with a plurality of pads, that is, the above-mentioned welding occurs laterally to the main board 15. In this way, since there is no interference from electronic components on the main surface of the main board 15, the difficulty of welding can be reduced. In addition, the flexible circuit board 136 is very thin, and its part is bent laterally toward the main board 15, which can also save the internal space of the movement housing 131. Based on the above description, the plurality of pads provided in the first connection area 1361 may include a first pad and a second pad respectively used for welding and connecting with the positive lead and the negative lead of the battery 16, and may also include a third pad and a fourth pad respectively used for welding and connecting with the positive lead and the negative lead of the charging electrode, and may further include a fifth pad and a sixth pad respectively used for welding and connecting with the signal line and the shielding line of the detection element 1163. Among them, since the shielding line of the detection element 1163 can be reused as one lead with the lead of the second charging electrode 1164, only one fourth pad and one sixth pad are required, which is conducive to expanding the size of other pads and the spacing between them.

[0149] Based on the above description, since the microphone 125 can be arranged on the connection part 12 so as to be closer to the mainboard 15, the flexible circuit board 136 can be further extended to the connection part 12. Based on this, the flexible circuit board 136 can also include a third connection area 1363 connected to the first connection area 1361, and the third connection area 1363 can be bent in a direction away from the mainboard 15 compared to the first connection area 1361, so that the third connection area 1363 can be attached to the first shell 1314 and / or the third shell 122. Among them, the microphone 125 can be arranged in the third connection area 1363 by 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 mainboard 15, and the second connection area 1362 can be parallel to the main surface of the mainboard 15.

[0150] Different from the first connection area 1361, the second connection area 1362 can be buckled with the mainboard 15 by means of a BTB connector. Based on this, the flexible circuit board 136 can also include a transition area 1364 connecting the first connection area 1361 and the second connection area 1362, and the transition area 1364 can be located on the same side of the mainboard 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 that the first connection area 1361 is buckled with the mainboard 15. As an example, the transition area 1364 can be set as a multi-section bending structure and can be set along the main surface of the mainboard 15.

[0151] Combination Fig.21 , the movement 14 may include a magnetic circuit system 141 and a coil 142, the coil 142 may extend into the magnetic gap of the magnetic circuit system 141, and may move in the magnetic field formed by the magnetic circuit system 141 when powered on. Among them, the magnetic circuit system 141 may include structural parts such as permanent magnets, magnetic yokes and brackets, and their specific structures and connection relationships are well known to those skilled in the art, and will not be repeated here. Further, if the movement 14 is applied to bone conduction headphones, the coil 142 may be configured to drive a vibration plate to move; if the movement 14 is applied to air conduction headphones, the coil 142 may be configured to drive a diaphragm to move; of course, the coil 142 may also be configured to drive a vibration plate and a diaphragm to move at the same time. Among them, the present application takes the example of the coil 142 driving a diaphragm to move as an example for exemplary description. Based on this, the movement 14 may also include a diaphragm 143 connected between the coil 142 and the magnetic circuit system 141, and the diaphragm 143 may generate sound transmitted to the ear through the sound outlet 1311 during the vibration process.

[0152] Furthermore, the movement 14 may also include a metal spring 144 fixed to the periphery of the magnetic circuit system 141, and the metal spring 144 is electrically connected to the coil 142. At this time, the movement 14 is elastically pressed on the main board 15 by the metal spring 144, so that the coil 142 is electrically connected to the contact on the main board 15. In this way, the metal spring 144 replaces the welding wire in the related art to avoid unnecessary welding, thereby reducing the difficulty of assembly, and there is no need to reserve welding space, thereby saving the internal space of the movement housing 131. Among them, the number of metal springs 144 can be two, and they can be used as the positive lead and the negative lead of the coil 142 respectively.

[0153] As an example, combining Fig.26 , the metal spring 144 may include a fixed portion 1441 and an elastic contact portion 1442 connected to one end of the fixed portion 1441, the fixed 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 toward the fixed portion 1441. In short, the portion of the metal spring 144 used to electrically connect with the contact on the mainboard 15 protrudes from the magnetic circuit system 141. Further, the metal spring 144 may also include a limiting portion 1443 connected to the other end of the fixed portion 1441, and the limiting portion 1443 extends on the same side as the elastic contact portion 1442. Among them, the elastic contact portion 1442 further bends and extends 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 store an elastic potential energy in advance, thereby increasing the good contact between the metal spring 144 and the contact on the mainboard 15. At this time, the height of the middle portion of the elastic contact portion 1442 relative to the fixing portion 1441 is greater than the height of the free end of the elastic contact portion 1442 relative to the fixing portion 1441 , so as to facilitate contact with the contact point on the mainboard 15 .

[0154] Based on the above description, the magnetic circuit system 141 can be connected to the side of the first shell 1314 facing the second shell 1315, and the main board 15 can be connected to the side of the second shell 1315 facing the first shell 1314. At this time, the second shell 1315 is buckled with the first shell 1314, so that the movement 14 can elastically press its metal spring 144 on the main board 15, which is simple, reliable and has high assembly efficiency. Among them, a metal spring 144 can be respectively provided on the opposite sides of the magnetic circuit system 141 to increase the stability of the second shell 1315 and the main board 15 clamping the movement 14 together with the first shell 1314. Correspondingly, the diaphragm 143 can be surrounded with the first shell 1314 to form a front cavity 200, for example, the magnetic circuit system 141 is supported on 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 connecting the rear cavity 300 and the side of the diaphragm 143 away from the front cavity 200. In other words, the movement 14 (specifically, the diaphragm 143) can separate the accommodating cavity formed by the movement housing 131 into the front cavity 200 and the rear cavity 300 opposite to each other. At this time, the positive projection of the sound outlet 1311 along the vibration direction of the movement 14 can at least partially fall on the diaphragm 143. Furthermore, 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, so that it is possible to avoid setting a through hole on the main board 15 that connects the side of the diaphragm 143 away from the rear cavity 300 and the front cavity 200, thereby simplifying the structure. Based on this, the ratio of the overlapping area between the orthographic projection of the movement 14 on the above-mentioned reference plane (for example, the plane where YZ is located) and the orthographic projection of the mainboard 15 on the above-mentioned reference plane to the larger area of ​​the orthographic projection of the mainboard 15 on the above-mentioned reference plane and the orthographic projection of the movement 14 on the above-mentioned reference plane can be between 0.8 and 1, for example, the area of ​​the orthographic projection of the movement 14 on the above-mentioned reference plane is substantially equal to the area of ​​the orthographic projection of the mainboard 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 mainboard 15 in the above-mentioned length direction and the larger of the size of the mainboard 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 accommodating cavity formed by the movement housing 131 is constant, the movement 14 can be as large as possible, which is conducive to increasing the sound loudness of the earphone 10 and widening the frequency response range of the earphone 10.

[0155] It should be noted that: Fig.26, although the movement 14 may also have a long axis direction (marked as Y1) and a short axis direction (marked as Z1) that are orthogonal to each other and perpendicular to the vibration direction (marked as X1) of the movement 14, for the sake of convenience of description, the aforementioned vibration direction, long axis direction and short axis direction in the embodiments provided in the present application may be parallel to the aforementioned thickness direction, long axis direction and height direction, respectively; of course, in some other embodiments, an angle between them is also allowed. Furthermore, the size of the movement 14 in the long axis direction is greater than or equal to the size of the movement 14 in the short axis direction. As an example, the orthographic projection of the movement 14 on a reference plane perpendicular to its vibration direction may be arranged in a rectangular shape, in which case the aforementioned long axis direction may be the direction of the long side of the aforementioned rectangle, and the aforementioned short axis direction may be the direction of the short side of the aforementioned rectangle.

[0156] The inventor of the present application has found in long-term research that when the mainboard 15 is provided on the side of the movement 14 away from the front cavity 200, a large number of electronic components of different sizes and shapes provided on the mainboard 15 will affect the sound quality of the earphone 10. Fig. 22 or Fig.32 The holding portion 13 may further include a partition 137 disposed in the movement housing 131. The partition 137 is mainly used to separate the movement 14 from the main board 15, and may be surrounded with the movement 14 to form a rear cavity 300, 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 may be surrounded with the magnetic circuit system 141 to form a rear cavity 300. 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] As an example, the partition 137 can be connected to the movement 14, that is, modular, so as to facilitate assembly. Fig.25 and Fig.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 toward the movement 14 and is connected to the movement 14 (specifically the magnetic circuit system 141), so as to allow the partition 137 and the movement 14 to enclose and form a rear cavity 300. Among them, a glue dispensing groove 1373 and a positioning column 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, so as to facilitate the accurate assembly of the partition 137 with the movement 14. Accordingly, the metal spring 144 may be located on the periphery of the partition 137.

[0158] Based on the above description, the side wall 1372 may also be provided with a communication hole that allows the rear cavity 300 to communicate with the outside of the earphone 10, such as a first communication hole 1375 that connects the pressure relief hole 1312 with the rear cavity 300 and a second communication hole 1376 that connects the sound adjustment hole 1313 with the rear cavity 300. The sealing member of the aforementioned communication hole may be elastically supported and surrounded between the partition 137 and the core housing 131 to seal the sound path connecting the rear cavity 300 with the outside of the earphone 10.

[0159] In the present application, the movement housing 131, movement 14 and other structural parts can be generally configured as a cubic structure or a cylindrical structure, and this is not limited here. In this application, the movement 14 is configured as a cubic structure as an example for illustrative description. Based on this, the size of the partition 137 in the above-mentioned length direction can be greater than or equal to the size of the partition 137 in the above-mentioned height direction. In this regard, combined with Fig.25 , the side wall 1372 may include a first side wall 13721 and a third side wall 13723 spaced apart from each other in the length direction, and a second side wall 13722 and a fourth side wall 13724 spaced apart from each other in the height direction. Further, one of the second side wall 13722 and the fourth side wall 13724 may be provided with a first connecting hole 1375, and the other may be provided with a second connecting hole 1376. Based on the above description, the first connecting hole 1375 may be provided in the second side wall 13722, and the second connecting hole 1376 may be provided in the fourth side wall 13724. It is worth noting that: in combination with Fig.30 and Fig.31 The second side wall 13722 may also be omitted, and the first connecting hole 1375 may be directly formed by the bottom wall 1371, the first side wall 13721 and the third side wall 13723, which will be exemplarily described below.

[0160] Furthermore, the third side wall 13723 may be further away from the sound outlet 1311 than the first side wall 13721, that is, further away from the connecting portion 12 and closer to the free end of the retaining portion 13. The size of the first connecting hole 1375 in the length direction may be greater than the size of the second connecting hole 1376 in the length direction, and the sizes of the two in the thickness direction may be equal, so as to adjust the actual area of ​​the effective communication area between the first connecting hole 1375 and the second connecting hole 1376 so as to make the rear cavity 300 and the outside of the earphone 10 communicate with each other. Based on this, the first side wall 13721 and the fourth side wall 13724 may be connected by the first arc-shaped transition wall 13725 to avoid the appearance 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. The first arc-shaped transition wall 13725 may be set in an arc shape, and the radius of the arc may 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-shaped transition wall 13726, and the curvature radius of at least a portion of the inner wall surface of the first arc-shaped transition wall 13725 can be greater than the curvature radius of the corresponding portion of the inner wall surface of the second arc-shaped transition wall 13726, which can also avoid the appearance of sharp structures such as right angles and sharp angles on the inner wall surrounding the rear cavity 300. Of course, in some other embodiments, the second arc-shaped transition wall 13726 may not be provided, for example, the portion of the fourth side wall 13724 close to the third side wall 13723 can be used to set the second connecting hole 1376, so that the second connecting hole 1376 extends along the above-mentioned length direction until it is 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 connecting hole 1375 away 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 connecting hole 1376 away 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 connecting hole 1375 and the second connecting hole 1376 can extend along the above-mentioned thickness direction to be flush with the inner wall surface of the bottom wall 1371, so as to avoid the inner wall of the rear cavity 300 to form a right angle, a sharp angle and other sharp structures, thereby facilitating the elimination of 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 along the above-mentioned height direction, so as to avoid the inner wall of the rear cavity 300 to form a right angle, a sharp angle and other sharp structures. Of course, the inner wall surfaces of the side wall 1372 and the bottom wall 1371 can be connected by all arcs.

[0162] In some embodiments, in combination Fig.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 the connection relationship between the second seal 1382 and the partition 137 can be the same or similar to that of the first seal 1381, and will not be repeated here. Further, the first seal 1381 and the second seal 1382 can be formed on the partition 137 by an injection molding process.

[0165] It should be noted that in this embodiment, the movement 14, the partition 137 and the structural parts such as the sound resistance net and the seal thereon can form a speaker assembly, that is, modularized to facilitate assembly.

[0166] In some other embodiments, combined with Fig.30 , the second side wall 13722 can be omitted; the fourth side wall 13724 can be partially used to set the second connecting hole 1376, and the height relative to the bottom wall 1371 can be equal to the height 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 can be first buried in the preset sink groove of the first seal 1381 or the second shell 1315, and then the first seal 1381 is fitted and fixed on the second shell 1315, and then the second shell 1315 and the first seal 1381 jointly clamp the first acoustic resistance net 1383, and then the subsequent assembly is performed. Among them, a sink groove for accommodating the first acoustic resistance net 1383 can be provided on the side of the first seal 1381 facing the second shell 1315. Similarly, the second sealing member 1382 and the second acoustic resistance net 1384 can also be fitted and fixed on the second shell 1315 to form a shell assembly, which is modular to facilitate assembly.

[0167] Based on the above detailed description, and for the convenience of description, now combined with Fig.33The following definition is 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, and 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. Accordingly, the second opening 301 may be farther away from the ear hole than the first opening 201 and the third opening 302. Among them, the aforementioned first opening to the third opening refer to the effective communication area between the front cavity 200 or the rear cavity 300 and the outside of the earphone 10, that is, the area with the smallest cross-section that the sound passes through in the process of being transmitted from the front cavity 200 or the rear cavity 300 to the outside of the earphone 10. For example: the movement 14 cooperates with the first shell 1314 (and the cover plate 1316) to form the front cavity 200, and the first opening 201 corresponds to the sound outlet 1311. In the embodiment where the earphone 10 is provided with a partition 137, that is, the partition 137 cooperates with the movement 14 to form the back cavity 300, if the actual area of ​​the pressure relief hole 1312 is greater than the actual area of ​​the second connecting hole 1376, then the second opening 301 corresponds to the second connecting hole 1376; if the actual area of ​​the pressure relief hole 1312 is less than the actual area of ​​the second connecting hole 1376, then the second opening 301 corresponds to the pressure relief hole 1312; if the pressure relief hole 1312 and the second connecting hole 1376 are staggered with each other, then the second opening 301 corresponds to the part of the pressure relief hole 1312 and the second connecting hole 1376 that is not blocked from each other. The third opening 302 is similar to it and will not be repeated here. In other embodiments where the earphone 10 is not provided with a partition 137, that is, the second shell 1315 cooperates with the movement 14 to form the back cavity 300, the second opening 301 and the third opening 302 directly correspond to the pressure relief hole 1312 and the tuning 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 , the corresponding opening may naturally cease to exist.

[0168] Further, for the convenience of description, the effective area described in the present application can be defined as the product of the actual area of ​​the above-mentioned effective connected area and the porosity of the acoustic resistance net. For example: when the first opening 201 is covered with an acoustic 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 acoustic resistance net; and when the first opening 201 is not covered with an acoustic 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 and will not be described here. In the present 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 Fig.25 and Fig.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 surrounding the aforementioned hole or opening. 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] Combination Fig.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 in opposite phase, so that they can cancel each other out in the far field, that is, to form an "acoustic dipole" to reduce sound leakage. Preferably, in the wearing state, the line connecting the two monopole sound sources can just point to the ear hole (referred to as the "listening position") so that the user can hear a sufficiently loud sound. Among them, the sound pressure at the listening position (referred to as P ear ) can be used to characterize the strength of the sound heard by the user. Further, the sound pressure on the sphere centered on the user's listening position (denoted as P far ), which can be used to characterize the strength of sound leakage radiated from the earphone 10 to the far field. Among them, P can be obtained by using a variety of statistical methods. far , for example, taking the average value of the sound pressure at each point on the sphere, or taking the surface integral of the sound pressure distribution at each point on the sphere. Obviously, the sound pressure P transmitted to the user's ear by the earphone 10 is ear Should be large enough to enhance the listening effect; the far-field sound pressure P far It should be small enough to increase the sound leakage reduction effect. Therefore, the parameter α can be taken as an indicator for evaluating the sound leakage reduction / listening effect of the earphone 10:

[0173]

[0174] Furthermore, when the earphone 10 is in a worn state, the orthographic projection of the retaining portion 13 on the ear may mainly fall within the range of the helix, for example, the retaining portion 13 is located on the side of the ear hole close to the top of the user's head, and contacts the anti-helix on the front side of the ear. At this time, the first opening 201 may be located between the anti-helix and the upper ear root, and transmit sound to the ear hole. Furthermore, since the cavum concha and the hymen concha have a certain depth and are connected to the ear hole, the orthographic projection of the first opening 201 on the ear may at least partially fall within the cavum concha and / or the hymen concha, so that the sound transmitted to the outside of the earphone 10 through the first opening 201 is transmitted to the ear hole. Not only that, combined with Fig.35 and Fig.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 Fig.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 Fig.38, with "no baffle" as a reference, "with baffle" is obviously beneficial to reduce parameter α, that is, to increase the sound leakage reduction effect; when the angle θ = 0°, parameter α reaches the minimum value, indicating that the best sound leakage reduction effect can be obtained. In this application, the angle θ can be within the range of ±80°; preferably, the angle θ can be within the range of ±40°; more preferably, the angle θ can be within the range of ±20°. Fig.33 , considering that the second opening 301 is generally located on the side of the first opening 201 away from the ear hole, the angle θ can only take positive values.

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

[0178] Furthermore, when the earphone 10 is in the wearing state, the retaining portion 13 can be close to the front side of the ear, and the first opening 201 thereon can also face the ear, so that it can be simply regarded as the average normal line of the above-mentioned baffle perpendicular to the first opening 201. Based on this, the angle between the line O1-O0 and the reference plane perpendicular to the average normal line of the first opening 201 can be between 25° and 55°. The calculation formula of the above-mentioned average normal line is:

[0179]

[0180] In the formula, is the above average normal; is the normal 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 average normal line is also the tangent plane of the first opening 201; accordingly, the average normal line can also be parallel to the vibration direction and the thickness direction of the movement 14. Therefore, the angle between the connecting line O1-O0 and the vibration direction can be between 0° and 50°, preferably between 0° and 40°.

[0182] Further, based on the above description, the ear can be simply regarded as a baffle that cooperates with the acoustic 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 between the upper ear root, the intertragus notch and the Darwin's tubercle form a reference plane (denoted as LA-LB-LD), which 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 the wearing state, it will form multiple contact points with the ear to ensure the wearing stability, so there will be positions on the earphone 10 that correspond to these contact points one by one; 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 correspondence, and this deviation can be controlled by the deformation capacity of the elastic portion 112. Therefore, for the convenience of description, we believe that this deviation is tolerable. As an example, combined with Fig.17 and Fig.45 , the free end of the retaining portion 13 away from the fixing component 20 may have a first reference point (e.g., CP0) for contacting the front side of the ear, the fixing component 20 may have a second reference point (e.g., CP3) for contacting the upper ear root and a third reference point (e.g., CP6) for contacting the ear at the back side of the ear, and the lines connecting the first reference point, the second reference point, and the third reference point form a reference plane (denoted as CP0-CP3-CP6), which can be used to describe the aforementioned baffle. Based on this, the angle between the connecting line O1-O0 and the aforementioned reference plane can be between 15° and 45°. In a specific embodiment, the angle between the connecting 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 surface of the ear is not a flat, regular structure, so the other parameters related to the parameter α are obtained through theoretical analysis and actual measurement. The actual measurement may refer to the measurement performed after the earphone 10 is worn on the above-mentioned simulator (such as GRAS 45BC KEMAR).

[0185] As we all know, although the frequency range of sounds that normal people's ears can perceive is between 20Hz and 20kHz, it does not mean that all these sounds can be heard. Generally speaking, normal people's ears mainly hear sounds with frequencies below 4kHz. Based on this, on the one hand, the resonant frequency of the first sound transmitted to the outside of the earphone 10 through the first opening 201 can be shifted to high frequency as much as possible, so that the frequency response curve of the first sound can be as flat as possible in the mid-high frequency band and above, so as to increase the listening effect. On the other hand, the resonant frequency of the second sound transmitted to the outside of the earphone 10 through the second opening 301 can also be shifted to high frequency as much as possible, which can not only reduce the user's sensitivity to sound leakage, but also allow the above-mentioned anti-phase cancellation to be extended to the high frequency band, so as not to affect the listening effect while reducing sound leakage. Therefore, the frequency response curve of the first sound may have a first mid-high frequency lowest resonance peak, which is the lowest of all 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 may have a second mid-high frequency lowest resonance peak, which is the lowest of all 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 may 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 may have a second resonance peak with the lowest frequency in the mid-high frequency band and above. The peak resonance frequencies of the first mid-high frequency lowest resonance peak and the second mid-high frequency lowest resonance peak may be greater than or equal to 5kHz. Preferably, the peak resonance frequencies of the first mid-high frequency lowest resonance peak and the second mid-high frequency lowest resonance peak may both be greater than or equal to 6kHz. Furthermore, 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 may be less than or equal to 1 kHz, so that the second sound and the first sound can be better anti-phased and canceled in the far field.

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

[0187] Based on the above detailed description, when the user wears the earphone 10, he mainly listens to the first sound, so the peak resonance frequency of the first mid-high frequency lowest resonance peak has a greater impact on the listening effect. To this end, a corresponding study is conducted on the first mid-high frequency lowest resonance peak to increase the listening effect. Among them, the resonance peak of the frequency response curve of the first sound in the mid-high frequency band and above can be mainly derived from the cavity resonance, which generally satisfies the calculation formula of the resonance frequency of the Helmholtz resonance cavity:

[0188]

[0189] In the formula, f 0 is the resonant frequency of the cavity resonance, c 0 is the speed of sound in 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 shell.

[0190] Obviously, the larger the actual area of ​​the first opening 201, the smaller the volume of the front cavity 200, and the higher the resonance frequency corresponding to the cavity resonance, that is, the first mid-high frequency lowest resonance peak is more likely to shift to a higher frequency. Furthermore, an acoustic resistance net is generally provided 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 2mm 2 In a specific embodiment, the actual area of ​​the first opening 201 may be greater than or equal to 7 mm. 2 The porosity of the acoustic resistance mesh covered thereon may be greater than or equal to 13%; and / or the pore size may be greater than or equal to 18 μm. Further, the volume of the front cavity 200 may be less than or equal to 90 mm 3 . The volume of the front cavity 200 may 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 and model of the movement 14 are selected, and on the premise of satisfying the vibration stroke of the diaphragm 143, the depth of the front cavity 200 in the aforementioned vibration direction is as small as possible. Therefore, the maximum depth of the front cavity 200 in the aforementioned vibration direction may be less than or equal to 3 mm, preferably less than or equal to 1 mm.

[0191] Furthermore, combined with Fig.40 , when the front cavity 200 is set to a cubic structure, the cavity surface of the front cavity 200 will form at least one pair of parallel or approximately parallel reflection surfaces, 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 a fixed wave node, thereby inducing a standing wave at a specific frequency. In other words, the resonance peak 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, f 0 is the frequency of the standing wave peak, c 0 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 is, the higher the frequency corresponding to the standing wave peak is, that is, the first mid-high frequency lowest resonance peak is more likely to shift to a higher frequency. As an example, 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 description, the front cavity 200 may 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. The first front cavity surface 202 may be closer to the connecting portion 12 than the third front cavity surface 204, the fourth front cavity surface 205 may 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 may be greater than or equal to the distance between the second front cavity surface 203 and the fourth front cavity surface 205. Further, the vertical 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 may be defined as a first distance L1, a second distance L2, a third distance L3 and a fourth distance L4, respectively. At this time, assuming that the four vertical distances have the following basic relationship: L1≥L2≥L3≥L4, then the frequencies corresponding to the corresponding 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 will be determined by the largest of the four vertical distances, so it can be L1≤17.15. As an example, 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 between the size of the first opening 201 in the long axis direction of the movement 14 and 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 arranged to be circular, and for another example, the first opening 201 is arranged to be runway-shaped.

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

[0198] Furthermore, the number of the Helmholtz resonance cavities 400 can be multiple, so as to better absorb the acoustic energy of the front cavity 200 near the peak resonance frequency. The multiple Helmholtz resonance cavities 400 can be arranged in parallel with the front cavity 200, for example, they are respectively connected to the front cavity 200; or the multiple Helmholtz resonance cavities 400 can be arranged in series with the front cavity 200, for example, they are connected to the front cavity 200 through one of them.

[0199] In some embodiments, in combination Fig. 22 The Helmholtz resonance cavity 400 can be arranged in the second area 13B, for example, in the flexible covering structure 132. Specifically, the blind hole 1321 in the flexible covering structure 321 is used to provide a deformation space for the flexible covering structure 132 and can also serve as the Helmholtz resonance cavity 400. Accordingly, a connecting hole connecting the Helmholtz resonance cavity 400 and the front cavity 200 is reserved on the cover plate 1316.

[0200] In some other embodiments, combined with Fig. 27, the Helmholtz resonance cavity 400 can be arranged in the connecting portion 12, for example, between the third shell 122 and the first shell 1314. Specifically, a first flange can be provided on the inner wall surface of the first shell 1314 facing the third shell 122, and the third shell 122 is pressed on the first flange to enclose and form the Helmholtz resonance cavity 400; or a second flange can be provided on the inner wall surface of the third shell 122 facing the first shell 1314, and the first shell 1314 is pressed on the second flange to enclose and form the Helmholtz resonance cavity 400. In short, the third shell 122 and the first shell 1314 can be buckled together to form the Helmholtz resonance cavity 400. Further, the Helmholtz resonance cavity 400 can also be formed by a blow molding process, and then placed and fixed in the connecting portion 12.

[0201] Based on the above detailed description, in order to make the resonant frequency of the second sound shift to high frequency as much as possible, the rear cavity 300 can also adopt the same or similar technical solutions as the front cavity 200, which will not be repeated here. The main difference from the front cavity 200 is that for standing waves, the rear cavity 300 can also destroy the high pressure area of ​​the sound field in the rear cavity 300 to shorten the wavelength of the standing wave in the rear cavity 300, thereby making the peak resonant frequency of the second mid-high frequency lowest resonant peak as large as possible. Fig.33 The third opening 302 may be disposed in the high pressure area 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 core 14. Fig.44 , the peak resonance frequency of the second mid-high frequency lowest resonance peak when the third opening 302 is in the open state (recorded as "Turn-on") can be shifted toward high frequency compared to the peak resonance frequency of the second mid-high frequency lowest resonance peak when the third opening 302 is in the closed state (recorded as "Turn-off"), and the shift amount can be greater than or equal to 1kHz. Furthermore, the effective area of ​​the third opening 302 can be smaller than the effective area of ​​the second opening 301 to facilitate adjustment of the peak resonance frequency of the second mid-high frequency lowest resonance peak. Of course, the size of the second opening 301 in the long axis direction of the movement 14 can also be greater than the size of the first opening 201 in the long axis direction of the movement 14.

[0202] Based on the above description, combined with Fig.43, the rear cavity 300 may have a first rear cavity surface 303 and a second rear cavity surface 304 spaced apart from each other in the long axis direction of the movement 14, and the second opening 301 and the third opening may be spaced apart 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, the section of at least one of the first rear cavity surface 303 and the second rear cavity surface 304 close to the third opening 302 may be arranged in an arc shape when observed along the vibration direction of the movement 14, so as to avoid the inner wall of the rear cavity 300 from having sharp structures such as right angles and sharp angles, thereby facilitating the elimination of standing waves. Further, at least one of the first cavity surface 303 and the third cavity surface 305 may be arranged in an arc shape when observed along the aforementioned short axis direction, which is also conducive to the elimination of standing waves.

[0203] Furthermore, the opening direction of the second opening 301 can be toward the top of the user's head, for example, the angle between its opening direction and the vertical axis is between 0° and 10°, so as to allow the second opening 301 to be farther away from the ear hole than the third opening 302, thereby making it difficult for the user and other people 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 can refer to the direction of its average normal. Accordingly, the second opening 301 can have a first center (for example, O1) in the long axis direction of the movement 14, and the third opening 302 can have a second center (for example, O2) in the aforementioned long axis direction, and the second center is farther away 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. The first rear cavity surface 303 may be closer to the connecting portion 12 than the second rear cavity surface 304 , and the curvature radius of at least a portion of the first rear cavity surface 303 may be greater than the curvature radius of a corresponding portion of the second rear cavity surface 204 .

[0204] As an example, 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 connected in sequence, and the first sub-rear cavity surface 3031 may be closer to the second opening 301 and farther away from the second rear cavity surface 304 than the third sub-rear cavity surface 3033. Among the second sub-rear cavity surface 3032 and the third sub-rear cavity surface 3033, at least the second sub-rear cavity surface 3032 may be arranged in an arc shape. For example: the second sub-rear cavity surface 3032 is arranged in an arc shape, and the arc radius is greater than or equal to 2mm. 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 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 portion 13, mainly for making the holding portion 13 contact the front side of the ear when worn. Based on this, in some embodiments, the fixing component 20 may include a hook portion 11 and a connecting portion 12 connecting the hook portion 11 and the holding portion 13. The relevant structure and its connection relationship can refer to the detailed description of any embodiment of the present application, and will not be repeated here. In some other embodiments, combined with Fig.45 The fixing assembly 20 may be arranged in a ring shape and wound around the ear, for example Fig.45 As shown in (a); it can also be set as an ear hook and a back hook structure and wrapped around the back of the head, for example Fig.45 As shown in (b); it can also be set as a head beam structure and wrapped around the top of the head, for example Fig.45 As shown in (c).

[0206] Furthermore, in addition to being applied to headphones, the technical solution described in the present application can also be applied to hearing aids, audio glasses, or other smart glasses such as AR, VR, MR, etc.

[0207] The above descriptions are only some embodiments of the present application, and are not intended to limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A headset, It is characterized in that 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 with the front side of the user's ear in a wearing state; the holding part is located on the side of the external auditory canal of the ear close to the top of the user's head, and contacts the auricle and / or anti-helix of the ear, the holding part includes a movement shell connected to the fixing component and a movement arranged in the movement shell, the movement includes a diaphragm, the holding part forms a front cavity and a rear cavity on opposite sides of the diaphragm, the movement shell is provided with a sound outlet hole connected to the front cavity and a pressure relief hole connected to the rear cavity, the opening direction of the pressure relief hole is toward the top of the user's head, and the angle between the opening direction of the pressure relief hole and the vertical axis is between 0° and 10°, the vertical axis refers to an axis passing vertically through a horizontal plane along the up and down direction of the body, the sound outlet hole is closer to the ear hole of the ear than the pressure relief hole, and the movement can generate sound transmitted to the ear through the sound outlet hole.

2. The headset according to claim 1, It is characterized in that The retaining portion has a thickness direction, a length direction and a height direction that are orthogonal to each other, the thickness direction is defined as the direction in which the retaining portion is close to or away from the ear in the worn state, and the height direction is defined as the direction in which the retaining portion is close to or away from the top of the user's head in the worn state, the movement shell includes a first shell and a second shell that are relatively arranged in the thickness direction, the first shell is closer to the ear than the second shell, the sound outlet is arranged in the first shell, and the pressure relief hole is arranged in the second shell.

3. The earphone according to claim 2, It is characterized in that A ratio between a dimension of an outlet end of the pressure relief hole in the length direction and a dimension of the second shell in the length direction is greater than or equal to 0.

55.

4. The earphone according to claim 2, It is characterized in that The frequency response curve of the sound output to the outside of the earphone through the pressure relief hole has a mid-high frequency lowest resonance peak, and the mid-high frequency lowest resonance peak is the lowest frequency of all resonance peaks in the mid-high frequency band and above. The second shell is also provided with a tuning hole connected to the rear cavity. When the tuning hole is in an open state, the peak resonance frequency of the mid-high frequency lowest resonance peak is shifted toward the high frequency compared to the peak resonance frequency of the mid-high frequency lowest resonance peak when the tuning hole is in a closed state, and the offset is greater than or equal to 1kHz.

5. The earphone according to claim 4, It is characterized in that The sound adjustment hole and the pressure relief hole are arranged opposite to each other in the height direction, and the pressure relief hole is farther away from the ear hole of the ear than the sound adjustment hole.

6. The earphone according to claim 2, It is characterized in that The fixing component includes a hook-shaped portion and a connecting portion connecting the hook-shaped portion and the retaining portion, wherein in a worn state, the hook-shaped portion is used to be hung between the rear side of the ear and the user's head, and the retaining portion is used to contact the front side of the ear, thereby allowing the retaining portion to cooperate with the hook-shaped portion to clamp the ear.

7. The earphone according to claim 6, It is characterized in that The connecting portion includes a third shell, and the third shell and the second shell are snap-fitted with the same side of the first shell, and the ratio between the maximum dimension of the third shell in the length direction and the dimension of the second shell in the length direction is less than or equal to 0.

4.

8. The earphone according to claim 7, It is characterized in that The third shell first extends away from the second shell along the length direction and the height direction simultaneously, and then approaches the second shell along the length direction and extends away from the second shell along the height direction.

9. The earphone according to claim 8, It is characterized in that The third shell also extends away from the free end of the holding portion along the thickness direction.

10. The earphone according to claim 2, It is characterized in that The frequency response curve of the sound transmitted to the ear through the sound outlet has a first mid-high frequency lowest resonance peak, which is the lowest frequency of all resonance peaks in the mid-high frequency and above frequency bands of the frequency response curve formed by the sound outlet, and the frequency response curve of the sound output to the outside of the earphone through the pressure relief hole has a second mid-high frequency lowest resonance peak, which is the lowest frequency of all resonance peaks in the mid-high frequency and above frequency bands of the frequency response curve formed by the pressure relief hole, and 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 are respectively greater than or equal to 5kHz.

11. The headset according to claim 10, It is characterized in that An angle between a line between the center of the pressure relief hole and the center of the sound outlet hole and the thickness direction is between 0° and 50°.

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