A headset

Abstract

The present application mainly relates to an earphone, which includes a hook-shaped portion, a connecting portion, and a retaining portion. The connecting portion connects the hook-shaped portion and the retaining portion. When worn, the hook-shaped portion is used to hang between the back of the user's ear and the head, and the retaining portion is used to contact the front of the ear, thereby allowing the retaining portion and the hook-shaped portion to cooperate to clamp the ear. The hook-shaped portion includes an elastic portion connected to the connecting portion and a battery portion located at the free end of the hook-shaped portion. The ratio between the length of the elastic portion and the length of the hook-shaped portion is greater than or equal to 48%, and the cross-sectional area of ​​at least a portion of the battery portion is greater than the maximum cross-sectional area of ​​the elastic portion. In the earphone provided by the present application, the elastic portion is configured as a slender structure, which is conducive to increasing its elastic deformation ability, so that the hook-shaped portion and the retaining portion can elastically clamp the ear, while also taking into account the wearing requirements of myopia glasses, smart glasses, etc.

Description

[0001] This application claims priority to 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-producing instruments, and in particular to a headset. Background Art

[0003] Headphones are widely used in our daily lives, working with electronic devices such as mobile phones and computers to provide users with an auditory feast. Based on their working principle, headphones can be generally divided into air conduction headphones and bone conduction headphones; based on how they are worn, they can be generally divided into headphones, earhook headphones, and in-ear headphones; and based on how the headphones interact with electronic devices, they can be generally divided into wired headphones and wireless headphones. Summary of the Invention

[0004] An embodiment of the present application provides an earphone, which includes a hook-shaped portion, a connecting portion and a retaining portion, wherein the connecting portion connects the hook-shaped portion and the retaining portion, wherein in a worn state, the hook-shaped portion is used to be hung between the back of the user's ear and the head, and the retaining portion is used to contact the front side of the ear, thereby allowing the retaining portion and the hook-shaped portion to cooperate to clamp the ear; the hook-shaped portion includes an elastic portion connected to the connecting portion and a battery portion located at the free end of the hook-shaped portion, the ratio between the length of the elastic portion and the length of the hook-shaped portion is greater than or equal to 48%, and the cross-sectional area of ​​at least a partial area of ​​the battery portion is greater than the maximum cross-sectional area of ​​the elastic portion.

[0005] The beneficial effect of the present application is that the elastic part in the earphone provided by the present application is set as a slender structure, which is conducive to increasing its elastic deformation ability, so that the hook part and the retaining part can elastically clamp the ear, and take into account the wearing needs of myopia glasses, smart glasses, etc. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0007] Figure 1 is a schematic diagram of the front structure of an ear contour of the user described in this application;

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

[0009] Figure 3 yes Figure 2 Schematic diagram of the left side structure 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 Schematic diagram of the rear 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 Schematic diagram of the left side structure of the middle earphone;

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

[0016] Figure 10 yes Figure 7 Schematic diagram of the rear view of the middle earphone in the wearing state;

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

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

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

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

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

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

[0023] Figure 17 This is a schematic structural diagram of the earphone embodiment provided by the present application, facing the ear side;

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

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

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

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

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

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

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

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

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

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

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

[0035] Figure 29 This is a schematic structural diagram of an embodiment of the headset provided by the present application as viewed from the top of a user's head;

[0036] Figure 30 This is a schematic diagram of the disassembled structure of an embodiment of the earphone provided by this application;

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

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

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

[0040] Figure 34 Schematic diagram of the acoustic field distribution of the acoustic dipole provided by this application;

[0041] Figure 35 This is a schematic diagram of the sound field distribution of an acoustic dipole provided by this application with a baffle;

[0042] Figure 36 This is a diagram of the far-field sound pressure when the acoustic dipole provided in this application is equipped with a baffle or not;

[0043] Figure 37 This is a schematic diagram of a theoretical model of an acoustic dipole with a baffle provided by this application;

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

[0045] Figure 39 Schematic diagram of the relative relationship between an acoustic dipole embodiment provided by the present application and the ear;

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

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

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

[0049] Figure 43 This is a schematic structural diagram of the rear cavity of an earphone according to an embodiment of the present application;

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

[0051] Figure 45 Schematic diagrams of the structures of the three embodiments of the earphones provided in this application in the wearing state. DETAILED DESCRIPTION

[0052] The present application will be further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only intended to illustrate the present application and are not intended to limit the scope of the present application. Similarly, the following examples are only some examples of the present application and not all examples. All other examples obtained by those of ordinary skill in the art without creative work are intended to fall within the scope of protection of this application.

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

[0054] See Figure 1 , Figure 1 It is a schematic diagram of the front structure of the ear outline of the user described in this application.

[0055] like Figure 1 As shown, in addition to the external auditory canal 101 and its adjacent cavum conchae 102, the user's ear 100 also has a certain depth and volume in three-dimensional space, including the cymba conchae 103 and the triangular fossa 104, which can also be used to meet the wearing requirements of the earphone. In other words, by rationally designing the earphone structure and leveraging areas of the user's ear 100 other than the external auditory canal 101, the earphone can be worn and mechanical vibrations can be transmitted, thus "liberating" the user's external auditory canal 101, thereby improving the user's health and reducing the probability of traffic accidents. Based on this, the present application proposes an earphone that primarily utilizes the upper half of the user's ear 100 (specifically, the area where the cymba conchae 103, triangular fossa 104, antihelix 105, scaphoid 106, and helix 107 are located) to achieve earphone wearing and mechanical vibration transmission. Of course, to improve the wearing comfort and reliability of the earphone, further areas such as the user's earlobe 108 can also be utilized. Furthermore, for ease of description, some more specific physiological locations on the ear 100 may be further identified, such as the superior auricular 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 notch LC near the earlobe 108 end facing the cavum concha 102, and the intertragic notch LD near the earlobe 108 end of the cavum concha 102. Of course, due to individual differences among users, physiological locations such as Darwin's tubercle may not be obvious or even absent on the ears of some users, but this does not mean that other users do not have such physiological locations 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, and in combination with Figure 1 Unless otherwise specified, the external auditory canal in this application specifically refers to its 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, they are all aimed at the user's ears.

[0057] Joint Reference Figures 2 to 5 , Figure 2 This is a schematic diagram of the main structure of an embodiment of the earphone provided by this application. Figure 3 yes Figure 2 Schematic diagram of 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 earphones in the rear view when worn. 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 specific posture (such as the attached figure). Figure 2 The relative position relationship, movement status, etc. between the various components (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, as shown in FIG. Figure 4 and Figure 5 As shown, the hook portion 11 can be primarily designed to be positioned between the back of the user's ear and the head, while the retaining portion 13 can be primarily designed to contact the front of the user's ear, thereby allowing the retaining portion 13 and the hook portion 11 to cooperate to clamp the ear. As an example, the connecting portion 12 can extend from the head toward the outside of the head, thereby cooperating with the hook portion 11 to provide a compressive force for the retaining portion 13 against the front of the ear. Under the action of this compressive force, the retaining portion 13 can specifically press against the areas of the cymba concha, fossa triangularis, and antihelix, thereby ensuring that the earphone 10 does not obstruct the external auditory canal when the earphone 10 is worn. As an example, when the earphone 10 is worn, the projection of the retaining portion 13 on the user's ear primarily falls within the helix. Furthermore, the retaining portion 13 can be located on the side of the external auditory canal near the top of the user's head, contacting the helix and / or 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, 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 Figure 9 and Figure 10 Of course, due to individual differences among users, the actual wearing state of the headset 10 may be different from the normal wearing state described above.

[0060] For users such as adult males, the thickness of their ears is often thicker (commonly known as "thick ears"). By rationally designing the shape, size and other structural parameters of the connecting portion 12, as well as its connection relationship with the hook portion 11 and the retaining portion 13, as will be exemplarily described below, it is possible to ensure that the earphone 10 fits the ear as closely as possible to improve the wearing stability of the earphone 10, and it is also possible to 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 worn, 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 earphones 10 may also include a movement 14, a mainboard 15, and a battery 16. The movement 14 is primarily used to convert electrical signals into corresponding mechanical vibrations (i.e., "sound") and may be electrically connected to the mainboard 15 and battery 16 via corresponding conductors. The mainboard 15 is primarily used to control the sound produced by the movement 14, and the battery 16 is primarily used to provide electrical energy for the sound produced by the movement 14. Of course, the earphones 10 described in this 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 battery 16 via 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 pressed against 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, Figure 4 As shown, the holding portion 13 is used not only to fix the core 14, but also to set some function keys ( Figure 2 Based on this, the main board 15 can also be set in the holding part 13 to shorten the wiring distance between the movement 14 and other components 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 is located in front of the user's ear when the headset 10 is in the wearing state, the battery 16 can be set in the hook-shaped part 11 and is mainly located between the back of the user's ear and the head when the headset 10 is in the wearing state, as shown in FIG. Figure 5 As shown. This arrangement not only increases the capacity of the battery 16 to improve the battery life of the headset 10, but also balances the weight of the headset 10 to improve its stability and comfort when worn. The weight of the headset 10 is now evenly distributed across both ends, and the user's ear can serve as a fulcrum to support the headset 10 when worn, preventing it from slipping off at least when not in motion. Of course, the user's ear will bear most of the weight of the headset 10, which can cause discomfort when worn for extended periods. To this end, the hook 11, connecting portion 12, retaining portion 13, and other structures can be made of a softer material (e.g., polycarbonate, polyamide, acrylonitrile-butadiene-styrene copolymer, etc.) to improve the wearing comfort of the headset 10. Furthermore, to improve the structural strength of the headset 10, elastic metal wires such as spring steel, titanium alloy, titanium-nickel alloy, or chrome-molybdenum steel can be incorporated into the hook 11, connecting portion 12, and retaining portion 13.

[0063] Furthermore, different users may have significant differences in age, gender, and expression of genetically controlled traits, resulting in different users' ears and heads being of different sizes and traits. 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 one portion of the connecting portion 12 is rotatable relative to another portion, so that the relative positional 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 applicability of the earphone 10 to users in terms of wearing. For example, if the connecting portion 12 is made of a deformable material such as soft steel wire, the user can bend the connecting portion 12 to rotate one portion relative to the other portion, thereby adjusting the relative positions of the hook portion 11, the connecting portion 12, and the retaining portion 13 in three-dimensional space to meet 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 understanding of technicians in this technical field and will not be 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 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 middle 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 upper proximal area of ​​the middle ear (eg Figure 1 The area shown in the dotted box C).

[0065] like Figures 4 to 6As shown, when the earphones 10 are worn, segments ABC are primarily located behind the user's ears, segments DEF are primarily located in front of the user's ears, and segments CD primarily adapt to the thickness of the user's ears. At this point, segments BC, CD, and DEF form a "clip"-like structure, allowing the earphones 10 to be clamped to the user's ears, thereby forming the basic wearing posture. The following is an exemplary description of the force applied to the earphones 10 during wear and their stability:

[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. 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. During actual wearing, due to differences in the physiological structures of the head, ears, etc. of different users, the actual wearing of the earphone 10 will be affected to a certain extent. The position where the earphone 10 contacts the head during actual wearing 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 wholly abut against the user's head. Its mechanical model and the principle of stability during actual wearing are the same as those of the above-mentioned technical solution. It is a content that can be easily known and adjusted by those skilled in the art on the basis of the technical solution of this application without creative work, and will not be repeated here. It is configured 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 toward the outside of the head at the second contact point A. This force is converted into a force directed toward the head at the first connection point C through the lever structure, and then provides a pressing force on the front side of the ear for the retaining portion 13 through the connecting portion 12.

[0067] It should be noted that in order for the free end of the hook portion 11 to press against the user's head when the earphone 10 is in the worn state, and for the user's head to provide a force directed outwardly toward the head at the second contact point A, at least the following conditions must be met: the angle formed between the free end of the hook portion 11 and the YZ plane when the earphone 10 is not worn is greater than the angle formed between the free end of the hook portion 11 and the YZ plane when the earphone 10 is in the worn state. The greater the angle formed between the free end of the hook portion 11 and the YZ plane when the earphone 10 is not worn, the better the free end of the hook portion 11 can press against the user's head when the earphone 10 is in the worn state, and the greater the force directed outwardly toward 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 presses 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" pressing effect on the user's ear, thereby improving the wearing stability of the earphone 10.

[0069] Furthermore, the battery 16 can be primarily located in the AB section of the hook portion 11 to overcome the weight of the retaining portion 13, its internal movement 14, the mainboard 15, and other structures, thereby improving the wearing stability of the earphone 10. Of course, the surface of the hook portion 11 that contacts the user's ear or head can also be configured with a frosted surface, a textured surface, or other structures to increase the friction between the hook portion 11 and the user's ear or head, thereby overcoming the weight of the retaining portion 13, its internal movement 14, the mainboard 15, and other structures, thereby improving the wearing stability of the earphone 10. Furthermore, the free end of the hook portion 11 (particularly the area where point A is located) is deformable, so that when the earphone 10 is in the wearing state, the free end of the hook portion 11 presses against the user's head and deforms, thereby increasing the contact area between the free end of the hook portion 11 and the user's head, thereby improving the wearing comfort and stability of the earphone 10. For example, the hook portion 11 is molded using two-shot injection molding, and the elastic modulus of its free end (particularly the area at point A) is lower than that of other areas, thereby increasing the deformation capacity of the free end. Another example is that the free end of the hook portion 11 is provided with a hole 111, creating a hollow structure to increase the deformation capacity of the free end. The hole 111 can be a through hole and / or a blind hole, and can be one or more. The axis of the hole 111 can be perpendicular to the contact surface between the free end of the hook 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 earlobe of the ear when the earphone is worn, thereby improving the wearing comfort of the earphone 10.

[0071] Based on the detailed description above, the present application, on the one hand, reasonably and evenly distributes the weight of the earphone 10, so that the user's ear can serve as a fulcrum to support the earphone 10 when the earphone 10 is worn; on the other hand, a connecting portion 12 is provided between the hook portion 11 and the retaining portion 13 of the earphone 10, so that when the earphone 10 is worn, the connecting portion 12 cooperates with the hook portion 11 to provide a pressing force to the retaining portion 13 on the front side of the ear, thereby ensuring that the earphone 10 is firmly attached to the user's ear when worn. This arrangement can improve both the wearing stability of the earphone 10 and the reliability of the sound production of the earphone 10.

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

[0073] like Figures 4 to 6 As shown, when the earphones 10 are worn, segments ABC are primarily located behind the user's ears, segments DEF are primarily located in front of the user's ears, and segments CD primarily adapt to the thickness of the user's ears. At this point, segments BC, CD, and DEF form a "clip"-like structure, allowing the earphones 10 to be clamped to the user's ears, thereby forming the basic wearing posture. The following is an exemplary description of the force applied to the earphones 10 during wear and their stability:

[0074] The main difference from the above embodiment is that: in this embodiment, Figure 7 and Figure 8 As shown, the hook portion 11 is closer to the holding portion 13 as a whole, so that when the earphone 10 is in the wearing state, as shown in FIG. Figure 9 and Figure 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 Figure 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 Figure 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-worn state), the distance between the first contact point B and the second contact point F along the extension direction of the connecting portion 12 is smaller than the distance between the first contact point B and the second contact point E along the extension direction of the connecting portion 12 in the worn state, thereby providing the retaining portion 13 with a pressing 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" when worn.

[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. In the natural state of the earphone 10, 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 Figure 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 Figure 11 This arrangement not only allows the free end of the hook portion 11 to press against the back of the user's ear, but also allows the ABC segment to be C-shaped, wherein the third contact point A can be located in the area of ​​the ear near the earlobe, thereby allowing the hook portion 11 to be vertically (such as Figure 11 The hook portion 11 is provided with a hook-shaped portion 11 extending in length, which not only clamps the user's ear in the vertical direction but also increases the contact area between the hook portion 11 and the user's ear, thereby increasing the friction between the hook portion 11 and the user's ear and improving the wearing stability of the earphone 10.

[0078] See Figure 12 , Figure 12 This is a schematic diagram of the top view of another embodiment of the earphone provided in this application.

[0079] The main difference from any of the above embodiments is that in this embodiment, the retaining portion 13 not only presses against the front of the user's ear but also extends further and is retained within the cymba concha and / or fossa triangularis of the ear. This arrangement allows the retaining portion 13 to be stopped by the helix of the ear at least in the direction of extension of the connecting portion 12, preventing the retaining portion 13 from turning outward when the earphone 10 is worn, thereby improving the wearing stability of the earphone 10.

[0080] As an example, Figure 12 As shown, the earphone 10 further includes an extension portion 17, which is connected to the holding portion 13. Figure 12As shown in the figure (arrow X), a gap is defined between the extension portion 17 and the retaining portion 13. This gap may be less than or equal to the thickness of the helix of the ear. This configuration allows the extension portion 17 to extend into the cymba concha and / or the triangular fossa of the ear when the earphone 10 is worn. At this time, because 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, thereby preventing the retaining portion 13 from turning outward when the earphone 10 is worn, thereby improving the wearing stability of the earphone 10. At the same time, the retaining portion 13 is pressed against the front side of the ear under the action of the aforementioned pressing force. The two cooperate with each other to increase the wearing stability of the earphone 10.

[0081] See Figure 13 , Figure 13 This is a schematic diagram of the main structure of another embodiment of the earphones provided in this application.

[0082] The main difference from any of the above embodiments is that in this embodiment, the retaining portion 13 has a multi-segment structure to facilitate adjustment of the relative position of the movement 14 to the overall structure of the earphone 10. This arrangement ensures that when the earphone 10 is worn, the external auditory canal is not blocked while the movement 14 is as close to the external auditory canal as possible.

[0083] As an example, Figure 13 As shown in (a), the retaining portion 13 may include a first retaining segment 131a, a second retaining segment 132a, and a third retaining segment 133a, connected end to end. The end of the first retaining segment 131a facing away from the second retaining segment 132a is connected to the connecting portion 12. The third retaining segment 133a is primarily used to accommodate structural components such as the movement 14 and the mainboard 15. Furthermore, the second retaining segment 132a is folded back relative to the first retaining segment 131a, with a gap therebetween, forming a U-shaped structure.

[0084] As an example, Figure 13 As shown in (b), the retaining portion 13 may include a first retaining segment 131b, a second retaining segment 132b, and a third retaining segment 133b, connected end to end. The end of the first retaining segment 131b facing away from the second retaining segment 132b is connected to the connecting portion 12. The third retaining segment 133b is primarily used to accommodate structural components such as the movement 14 and mainboard 15. Furthermore, the second retaining segment 132b is bent relative to the first retaining segment 131b, creating a gap between the third retaining segment 133b and the first retaining segment 131b.

[0085] Joint Reference Figure 14 and Figure 15 , Figure 14 is a structural diagram of another embodiment of the earphone provided by this application, Figure 15 yes Figure 14 Schematic diagram of the mechanical model of the earphone in the wearing state. It should be noted that: Figure 15 The middle YZ plane can be considered as the plane where the user's head is located; Figure 15 The middle BC segment can be considered as the hook. Figure 15 The middle CD segment can be regarded as the connecting part. Figure 15 The DEF section can be regarded as the holding section. Figure 15 The middle GH segment can be regarded as an extension. Figure 15 Point C can correspond to Figure 1 The upper proximal area of ​​the middle ear (eg Figure 1 The area shown in the dotted box C).

[0086] The main difference from any of the above embodiments is that in this embodiment, Figure 14 As shown, 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 has a gap therebetween. This gap can be less than or equal to the thickness of the helix of the ear. With this arrangement, when the earphone 10 is worn, the hook portion 11 cooperates with the connecting portion 12 to allow the retaining portion 13 to rest on the front side of the user's ear. The extension portion 17 can extend into the cymba concha and / or fossa triangularis of the ear, preventing the retaining portion 13 from everting outward, thereby improving the wearing stability of the earphone 10. This embodiment uses the example of the extension portion 17 extending into the cymba concha as an example.

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

[0088] Based on the above description, when the earphone 10 is worn, it can be clamped on the ear. In order to increase the stability and comfort of wearing, the earphone 10 can be elastically clamped on the ear.

[0089] As an example, combining Figure 16The hook portion 11 may include an elastic portion 112 connected to the connecting portion 12 and a battery portion 113 located at the free end of the hook portion 11. The battery portion 113 is at least used to set the battery 16 of the earphone 10, and the battery 16 may be arranged in a columnar shape. In order to facilitate the arrangement of structural 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 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 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 of the length of the elastic portion 112 to the length of the hook-shaped portion 11 can be greater than or equal to 48%, preferably greater than or equal to 60%. The radial dimension of the elastic portion 112 in any direction along its cross-section can be less than or equal to 5 mm, preferably less than or equal to 4 mm. This allows the elastic portion 112 to be configured as an elongated structure, resulting in superior elastic deformation, thereby enabling the earphone 10 to better elastically grip the ear. Furthermore, by minimizing the cross-sectional area of ​​the elastic portion 112, space can be reserved for wearing glasses for nearsightedness or farsightedness, or smart glasses such as AR, VR, and MR, thereby addressing the user's other wearing needs. Furthermore, since the hook-shaped portion 111 is primarily positioned between the user's head and ear, the cross-sectional shape of the elastic portion 112 can be circular or elliptical, allowing for at least the elastic portion 112 to better contact the ear and / or head, aligning as closely as possible with the boundary between the ear and head, thereby increasing wearing stability.

[0091] The cross-sectional area of ​​at least a portion of the battery portion 113 can be larger than the maximum cross-sectional area of ​​the elastic portion 112, so that the battery portion 113 can be equipped with a larger capacity battery 16, thereby increasing the battery life of the headset 10. In some embodiments, the battery portion 113 can be cylindrical, and the ratio of the length to the outer diameter can 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 differ significantly. 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. The cross-sectional area of ​​the transition portion 114 is between the cross-sectional areas of the elastic portion 112 and the battery portion 113, and gradually increases in the direction from the elastic portion 112 to the battery portion 113. This not only improves the symmetry of the hook portion 11 in appearance, but also allows the hook portion 11 to better contact the ear and / or head. Furthermore, because the back of the ear generally has multiple ridges, such as the hymenocalamus ridge corresponding to the cymba concha and the cavum concha ridge corresponding to the cavum concha, and the cavum concha ridge is generally closer to the earlobe than the hymenocalamus ridge, the transition portion 114 can be provided with a contoured recess corresponding to the back contour of the ear on the side facing the ear, thereby facilitating effective contact between the hook portion 11 and the back of the ear, such as contact between the contoured recess and the cavum concha ridge. In short, the contoured recess avoids the ridges on the back of the ear, preventing them from lifting the hook portion 11, thereby ensuring better contact between the hook portion 11 and 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-shaped portion 11 can adapt to various protrusions and depressions on the back side of the ear, while the other areas of the transition portion 114 are mainly used to make the space between the elastic portion 112 and the battery portion 113 smooth as quickly as possible, thereby increasing the symmetry of the hook-shaped portion 11 in appearance.

[0093] As is well known in fields such as medicine and anatomy, the three basic planes of the human body can be defined as the sagittal plane, the coronal plane, and the horizontal plane, as well as the three basic axes: the sagittal axis, the coronal axis, and the vertical axis. The sagittal plane is a plane perpendicular to the ground, taken along the front-back direction of the body, dividing the body into left and right parts; the coronal plane is a plane perpendicular to the ground, taken along the left-right direction of the body, dividing the body into front and back parts; and the horizontal plane is a plane parallel to the ground, taken along the top-bottom direction of the body, dividing the body into top and bottom parts. Accordingly, the sagittal axis is the axis perpendicular to the coronal plane, passing through the top-bottom direction of the body; the coronal axis is the axis perpendicular to the sagittal plane, passing through the top-bottom direction of the body; and the vertical axis is the axis perpendicular to the horizontal plane, passing through the top-bottom 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. Figure 17 , in the worn state, and when 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 (denoted as CP0) between the retaining portion 13 and the ear and is parallel to the above-mentioned coronal plane. In this way, it is beneficial to reduce the torque 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 weight and / or the aforementioned excessive torque 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 portion 11 and the connecting portion 12 facing the ear has a second position point (denoted as CP2) that is 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 portion 11 and the connecting portion 12, which will be explained exemplarily 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 on the same side of the aforementioned first reference plane, thereby increasing the stability of wearing.

[0095] For ease of description, and in combination with Figure 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 thickness direction is defined as the direction in which the holding portion 13 approaches or moves away from the ear when worn, the length direction is defined as the direction in which the holding portion 13 approaches or moves away from the front of the user when worn, and the 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 when worn. In the worn state, the height direction may be parallel to the vertical axis, and the thickness direction and the length direction may be parallel to the 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 can be either an elastic portion 112 whose elastic deformation ability 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 ability 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 Figure 9 and Figure 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 holding portion 13 on the aforementioned reference plane may also be staggered with each other.

[0097] As an example, and in combination Figure 16 and Figure 17 The orthographic projection of the elastic portion 112 on the reference plane can partially overlap with the orthographic projection of the retaining portion 13 on the reference plane, and the orthographic projection of the battery portion 113 on the reference plane can be offset from the orthographic projection of the retaining portion 13 on the reference plane. This facilitates the retaining portion 13 and the hook-shaped portion 11 to elastically clamp the ear from both the front and rear directions.

[0098] Furthermore, the radius of curvature of the edges of the orthographic projections of the elastic portion 112 and transition portion 114 on the reference plane facing the ear can first gradually increase and then gradually decrease in the direction from the connecting portion 12 to the hook portion 11, away from the battery portion 113. The initial gradual increase in the radius of curvature of the edge allows the hook portion 11 to better conform to the contour of the back of the ear; the subsequent gradual decrease can increase the degree of curvature of the hook portion 11 near the battery portion 113, thereby moving the battery portion 113 closer to the retaining portion 13. This facilitates the hook portion 11 hooking onto the back of the ear, thereby increasing wearer stability. Furthermore, the radius of curvature of the edge can increase and then decrease continuously, or in a stepwise manner, or a combination of the two. For example, the edge can include multiple segments, each having a radius of curvature, and the radius of curvature of the multiple segments can first gradually increase and then gradually decrease in the direction from the connecting portion 12 to the battery portion 113, which can also be referred to as a stepwise change. In order to increase wearing stability, the segment with the largest curvature radius among the multiple segments may partially overlap with the orthographic projection of the holding 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 reference plane facing the ear may include a first section (denoted as 11A), where 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 (e.g., CP1) is the highest point of the elastic portion in the height direction when worn. The radius of curvature of the first section may be between 8 mm and 10 mm. The starting point of the first section may coincide with the second point, or may be further away from the connecting portion 12 than the second point, as will be described exemplarily below. Furthermore, the edges of the elastic portion 112 and the transition portion 114 may also include a second section (denoted as 11B), where the starting point of the second section is the end point of the first section. The distance between the end point of the second section (denoted as CP4) and the highest point in the length direction may be between 8 mm and 11 mm, and the distance between the end point and the highest point in the height direction may be between 7 mm and 10 mm. The radius of curvature of the second section may be between 9 mm and 12 mm. Furthermore, the aforementioned edge of the elastic portion 112 and the transition portion 114 may further include a third section (denoted as 11C), the starting point of the third section being the end point of the second section, the distance between the end point of the third section (denoted as CP5) and the aforementioned highest point in the aforementioned length direction may be between 9 mm and 12 mm, and the distance between the end point of the third section (denoted as CP5) and the aforementioned highest point in the aforementioned height direction may be between 19 mm and 21 mm. The radius of curvature of the third section may be between 29 mm and 36 mm. Furthermore, the aforementioned edge of the elastic portion 112 and the transition portion 114 may further include a fourth section (denoted as 11D), the starting point of the fourth section being the end point of the third section, the distance between the end point of the fourth section (denoted as CP6) and the aforementioned highest point in the aforementioned length direction may be between 7 mm and 10 mm, and the distance between the end point of the fourth section (denoted as CP6) and the aforementioned highest point in the aforementioned height direction may be between 25 mm and 32 mm. The radius of curvature of the fourth section can be between 19 mm and 25 mm. Furthermore, the aforementioned edges of the elastic portion 112 and the transition portion 114 can also have a fifth section (denoted as 11E), the starting point of the fifth section being 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 can be less than or equal to 2 mm, and the distance between the end point of the fifth section and the aforementioned highest point in the aforementioned height direction can be between 30 mm and 38 mm. The radius of curvature of the fifth section can be between 9 mm and 13 mm. In this case, the fifth section can be provided with the aforementioned contoured recess, and the radius of curvature of the aforementioned contoured recess can 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 portion 112 on the reference plane and the upper edge of the retaining portion 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 portion 112 on the reference plane and the lower edge of the retaining portion 13. In this case, the orthographic projection of the third section on the reference plane can all fall on the retaining portion 13. Further, and in combination Figure 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-shaped portion 11 close to the connecting portion 12 may be the boundary between the hook-shaped 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] Combine Figure 19 The hook-shaped portion 11 may include an elastic metal wire 115, a battery compartment 1161, and a conductive 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 conductive wire 117 may extend from the battery compartment 1161 to the connecting portion 12 and the retaining portion 13 along 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 accommodate the battery 16, and the conductive 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 silicone. The elastic coating 118 at least covers the elastic metal wire 115 and the conductive 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 sheathing 118, and preferably can also be greater than the sum of the cross-sectional areas of the elastic metal wire 115, the wire 117 and the elastic sheathing 118.

[0102] Furthermore, the hook portion 11 may also include a transition piece 1162 connected to the elastic wire 115, so that the elastic wire 115 is connected to the battery compartment 1161 through the transition piece 1162. For example, the transition piece 1162 and the elastic wire 115 are formed using a metal insert injection molding process, and the battery compartment 1161 is configured as a cylindrical structure with one end open to facilitate the placement of structural components such as the battery 16. The transition piece 1162 is then snapped into the open end of the battery compartment 1161. Of course, in 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 configured as an open shape and can be sealed by a cover. The cross-sectional area of ​​the transition piece 1162 can gradually increase along the length of the hook portion 11 and in a direction away from the connecting portion 12. Accordingly, the elastic covering body 118 can also cover the transition piece 1162. The contoured recess can be formed in the transition piece 1162 and exposed through the elastic covering 118. In other words, the transition piece 1162 can have a contoured recess on the side facing the ear that corresponds to the rear contour of the ear. Furthermore, on a reference cross-section along the central axis of the battery compartment 1161, the radius of curvature of the contoured recess can be smaller than the radius of curvature of the other side of the transition piece 1162 facing away from the ear. In other words, the contoured recess has a greater curvature, allowing the transition portion 114 to avoid the bulge on the rear side of the ear.

[0103] Based on the above description, combined with Figure 28 Regarding the hook portion 11, the elastic portion 112 may correspond to the portion of the elastic wire 115 exposed between the connecting portion 12 and the transition piece 1162, and may primarily include the elastic covering 118, the elastic wire 115 covered therein, and the conductive wire 117. The battery portion 113 may correspond to the portion of the battery compartment 1161, and may primarily 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 primarily include the elastic covering 118 and the transition piece 1162 covered therein. In other words, the length of the elastic portion 112 may be the length of the portion of the elastic wire 115 exposed between the connecting portion 12 and the transition piece 1162 and covered by the elastic covering 118.

[0104] Furthermore, the earphone 10 may also include a processing circuit and a detection member 1163 coupled to the processing circuit. 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 based on the detection result of the detection member 1163. The processing circuit can be integrated on the main board 15, and the detection member 1163 can be any one or a combination of a capacitor, an inductor, or a resistor sensing element provided on the side of the hook portion 11 (such as the transition member 1162 or the battery compartment 1161) facing the ear. As an example, the detection member 1163 can be a capacitive sensing element and can be provided in a contoured recess of the transition member 1162.

[0105] In some application scenarios, when the detection element 1163 detects that the earphones 10 are being worn, the processing circuit generates a first control signal for controlling the earphones 10 to switch to the play state. When the detection element 1163 does not detect that the earphones 10 are being worn, the processing circuit generates a second control signal for controlling the earphones 10 to switch to the pause state. This can save power in the earphones 10 while increasing their interactivity.

[0106] In some other application scenarios, the earphones 10 may include a first earphone and a second earphone that are arranged in a pair 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. The processing circuit judges and selects one of them as the master earphone that is communicatively connected to the audio source device (such as a mobile phone, tablet computer, and smart watch, etc.) based on the detection results of the detection element 1163 in the first earphone and the second earphone. In this way, when the user uses the two earphones at the same time, one of them can be selected as the master 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 master earphone; and when the user only uses one of the two earphones, the earphone used is used as the master earphone.

[0107] Combine Figure 16 and Figure 18The side of the retaining portion 13 facing the ear may include a first region 13A and a second region 13B. The second region 13B may be further away from the connecting portion 12 than the first region 13A, that is, the second region 13B may be located at the free end of the retaining portion 13 away from the connecting portion 12. Based on the above description, the section of the hook-shaped portion 11 near the connecting portion 12, such as the elastic portion 112, may partially overlap with the second region 13B in its orthographic projection along the thickness direction. Furthermore, the first region 13A is provided with a sound outlet 1311, and the second region 13B may be raised toward the ear compared to the first region 13A and configured to contact the ear to allow the sound outlet 1311 to be spaced apart from the ear when worn. In short, the retaining portion 13 may be configured as a convex hull structure at its free end. In this way, since the movement 14 can generate sound that is transmitted to the ear through the sound outlet 1311, the aforementioned convex hull structure can prevent the ear from blocking the sound outlet 1311, thereby weakening the sound produced by the movement 14 or even preventing it from being output. By way of example, in the thickness direction, the maximum protrusion height of the second region 13B relative to the first region 13A can be greater than or equal to 1 mm, and a smooth transition can be achieved between the two regions. It should be noted that, if the sole purpose is to space the sound outlet 1311 from the ear when worn, the second region 13B, which protrudes toward the ear compared to the first region 13A, can also be another region of the retaining portion 13, such as the region between the sound outlet 1311 and the connecting portion 12. Furthermore, because the cavum concha and hymenoconcha have a certain depth and are connected to the ear canal, the orthographic projection of the sound outlet 1311 along the thickness direction onto the ear can at least partially fall within the cavum concha and / or hymenoconcha. By way of example, the retaining portion 13 can be located on the side of the ear canal closer to the top of the user's head and in contact with the antihelix; in this case, the orthographic projection of the sound outlet 1311 along the thickness direction onto the ear can at least partially fall within the hymenoconcha.

[0108] Further, combined with Figure 16 and Figure 33, the holding portion 13 can form a front cavity 200 and a rear cavity 300 of the earphone 10 on opposite sides of the movement 14, and the sound outlet 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 1311. In this way, the pressure relief hole 1312 allows air to freely enter and exit the rear cavity 300, so that the change in air pressure in the front cavity 200 can be as far as possible without being blocked by the rear cavity 300, thereby improving the sound quality of the sound output to the ear through the sound outlet 1311. Not only that, since the phases of the sounds output to the outside of the earphone 10 through the sound outlet 1311 and the pressure relief hole 1312 are opposite, they are canceled out in anti-phase in the far field away from the ear, that is, an "acoustic dipole" is formed to reduce sound leakage. The angle between the line connecting the center of the pressure relief hole 1312 and the center of the sound outlet hole 1313 and the 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-adjusting hole 1313 connected to the rear cavity 300. The sound-adjusting 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-adjusting 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 height direction, so as 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 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 that the pressure relief hole 1312 is further away from the ear canal 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, thereby reducing sound leakage. Based on this, the pressure relief hole 1312 can have a first center in the above-mentioned length direction, and the sound adjustment hole 1313 can have a second center in the above-mentioned length direction, and the second center can be further away from the center of the sound output 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 output 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 output 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 region 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, the main purpose is to listen to the sound transmitted to the ear canal through the sound outlet 1311. Other acoustic holes such as the pressure relief hole 1312 and the sound adjustment hole 1313 are mainly used to make the sound as good as possible with deep bass and penetrating high notes. Therefore, the size of the outlet end of the pressure relief hole 1312 in the above-mentioned length direction (for example, Figure 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-mentioned length direction (for example Figure 31 The ratio between the two (as shown in L2 in the figure) 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 due to the thickness of the movement housing 131 and other structural components, the sound outlet hole 1311, pressure relief hole 1312, and sound adjustment hole 1313 provided in the movement housing 131 have a certain depth. Consequently, relative to the accommodating cavity formed by the movement housing 131, the holes described herein have an inlet end proximal to the accommodating cavity and an outlet end distal thereto. The partition 137 and the communication holes provided thereon, described later, are similar in nature and will not be further described here.

[0111] Combine Figures 16 to 18 In a natural state, and when viewed from the side of the earphone 10 facing the top of the user's head when worn, for example, along the height direction, the retaining portion 13 is spaced apart from at least the section of the hook-shaped portion 11 near the connecting portion 12 in the thickness direction. The connecting portion 12 can be arc-shaped and connected between the retaining portion 13 and the hook-shaped portion 11. In this way, the connecting portion 12 can ensure that the retaining portion 13 located in front of the ear and the hook-shaped portion 11 located behind the ear are always spaced apart from each other in the thickness direction, at least in the section near the connecting portion 12. This allows the earphone 10 to bypass the upper earlobe and nearby tissues when worn, thereby preventing the earphone 10 from excessively clamping the helix near the upper earlobe 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 Figure 23 and Figure 24 , the connecting portion 12 can also further extend from one end of the connecting holding portion 13 to the other end of the connecting hook portion 11 along the above-mentioned length direction 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 above-mentioned height direction, that is, the connecting portion 12 itself forms a circuitous extension structure in three-dimensional space. In some other embodiments, combined with Figure 28 and Figure 29 In the direction from one end of the connecting retaining portion 13 to the other end of the connecting hook portion 11, the connecting portion 12 can extend only in the aforementioned length direction and the aforementioned height direction away from the free end of the retaining portion 13, that is, forming the first half of the circuitous extension structure. The section of the hook portion 11 close to the connecting portion 12 (e.g., the elastic portion 112) can continue to extend in the direction away from the connecting portion 12, close to the free end of the retaining portion 13 in the aforementioned length direction, and simultaneously extend away from the free end of the retaining portion 13 in the aforementioned height direction, that is, forming the second half of the circuitous extension structure. The two cooperate to form a circuitous extension structure in three-dimensional space. Of course, in 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 near the connecting portion 12 (e.g., the elastic portion 112), the connecting portion 12, and the edges of the retaining portion 13 facing the ear portion may be arranged in a circuitous arc shape. In a reference direction passing through a circuitous inflection point (e.g., CP2) of the arc and parallel to the aforementioned length direction, the minimum width W1 of the arc along the aforementioned thickness direction at a position 3 mm from the circuitous inflection point may be between 1 mm and 5 mm.

[0114] In some other embodiments, in the thickness direction, the minimum distance between the section of the hook portion 11 close to the connecting portion 12 , such as the elastic portion 112 , and the 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 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] Combine Figure 20 and Figure 18 The retaining portion 13 may include a movement shell 131 connected to the connecting portion 12, and structural parts such as the movement 14 and the mainboard 15 can be fixed in the accommodating space of the movement shell 131. As an example, the movement shell 131 may include a first shell 1314 and a second shell 1315 that are relatively arranged in the above-mentioned thickness direction, and the first shell 1314 is closer to the ear than the second shell 1315. Of course, the first shell 1314 and the second shell 1315 can also be relatively arranged in the vibration direction of the movement 14, and the aforementioned vibration direction can be parallel to the above-mentioned thickness direction. Specifically, the movement 14 can be fixed on the side of the first shell 1314 facing the second shell 1315 to enclose and form a front cavity 200, and the second shell 1315 can be snapped with the first shell 1314 and enclosed with the movement 14 to form a rear cavity 300. Accordingly, the sound outlet 1311 can be provided 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 provided on opposite sides of the second shell 1315, for example, both being arranged opposite each other in the aforementioned height direction. Based on the above description, the ratio between the dimension of the outlet end of the pressure relief hole 1312 in the aforementioned length direction and the dimension of the second shell 1315 in the aforementioned length direction can be greater than or equal to 0.55; preferably, the aforementioned ratio is between 0.8 and 1, so that the rear cavity 300 is connected to the outside of the earphone 10 over as large an area as possible while taking into account the structural strength of the second shell 1315.

[0118] In some embodiments, combined Figure 20The 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 both smaller than those of the first shell 1314, and the dimensions of the second shell 1315 can be much larger than those of the third shell 122. In this way, the second shell 1315 is snapped together with the first shell 1314, and the orthographic projection in the above-mentioned thickness direction partially overlaps with the first shell 1314, and the third shell 122 is snapped together with the portion of the first shell 1314 located outside the orthographic projection of the second shell 1315. In short, the third shell 122 can be snapped together with the second shell 1315 and the first shell 1314 on the same side, 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 length direction to the dimension of the second shell 1315 in the length direction may be less than or equal to 0.4.

[0119] Based on the above description, combined with Figure 23 and Figure 24 In a natural state, and when viewed from the side of the headset 10 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. 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 on the front side of the ear and the hook-shaped portion 11 located on the back side of the ear to be spaced apart from each other in the thickness direction, at least in the section near the connecting portion 12. Furthermore, the third shell 122 can first 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 extend closer to the second shell 1315 in the length direction and 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. At this time, the second position point can fall on the connecting portion 12, and the starting point of the first section can be further 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 changing trend as the third shell 122. In this way, the connecting portion 12 itself can form a circuitous extension structure in three-dimensional space. Because of this, combined with Figure 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 fastened 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, combined Figure 27 , the third shell 122 is integrally formed with the first shell 1314, and a connector hole is formed. Furthermore, the connecting part 12 can also include a connector 123, one end of the connector 123 can be connected to the hook portion 11, and the other end can be plugged and fixed in the connector hole, thereby realizing the connection between the hook portion 11 and the connecting part 12. Specifically, the end of the connector 123 away from the third shell 122 can be connected to the other end of the elastic metal wire 115 away from the battery compartment 1161, for example, they are molded by a metal insert injection molding process. Furthermore, the connecting part 12 can also include a locking member 124, and the part of the connector 123 inserted into the third shell 122 can 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 can be a wedge set in a columnar or sheet shape.

[0121] Based on the above description, combined with Figure 28 and Figure 29 The third housing 122 can extend away from the second housing 1315 in both the length direction and the height direction, from one end connected to the first housing 1314 to the other end connected to the connector 123. The section of the elastic wire 115 exposed from the connector 123 and proximate to the connector 123 can further extend away from the second housing 1315 in the length direction and in the height direction, moving away from the connector 123. Accordingly, the third housing 122 can also extend away from the second housing 1315 in the thickness direction. The section of the elastic wire 115 exposed from the connector 123 and proximate to the connector 123 can further extend away from the second housing 1315 in the thickness direction. In this case, the second position point can fall at the boundary between the hook portion 11 and the connecting portion 12, and the starting point of the first section can coincide with the second position point. The portion of the first shell 1314 that also serves as the shell of the connecting portion 12 and the portion of the connector 123 exposed to the third shell 122 can have the same or similar changing trend as the third shell 122. In this way, the connecting portion 12 is allowed to form only the front half of the above-mentioned winding extension structure, while the hook portion 11 continues to form the back half of the winding extension structure, thereby allowing the two to cooperate to form a winding extension structure in three-dimensional space. Figure 28 There is a parting line (denoted as PL2) between the connector 123 and the third shell 122 and the first shell 1314. The two are molded separately and then plugged into each other 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 can also be divided in other ways. For example, the shell of the retaining portion 13 is divided into two shells with roughly equal orthographic projection areas along the above-mentioned thickness direction, and the shell of the connecting portion 12 is divided into two along the above-mentioned inflection point, or there is only one and the other is served by the elastic metal wire 115, and the shells are then assembled accordingly.

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

[0124] In some embodiments, the flexible coating structure 132 can 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 can partially overlap. Furthermore, the thickness of the flexible coating structure 132 can 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 the second area 13B is only raised toward the ear compared to the first area 13A, then the side of the first shell 1314 facing the ear can also be designed differently in thickness. Based on this, the first shell 1314 can 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 covering structure 132 facing the movement housing 131 may be recessed with at least one blind hole 1321 spaced apart from each other. The blind hole 1321 may be mainly used to provide deformation space for the flexible covering structure 132, so as to allow the flexible covering structure 132 to produce more deformation under pressure when worn, thereby further improving 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 enabling them to 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 this case, by controlling parameters such as the elastic modulus and thickness of the flexible covering structure 132 and the size of the blind hole 1321, it is also possible to achieve both elastic deformation and structural strength. To ensure that the flexible covering structure 132 has blind holes 1321, the core housing 131, specifically the portion of the first housing 1314 corresponding to the second region 13B, may be provided with through holes 13141 that correspond one-to-one with and communicate with the blind holes 1321. Through holes 13141 are used to insert the molded core of the flexible covering structure 132. In this case, the multiple through holes 13141 can form a honeycomb or grid-like arrangement in the portion of the first housing 1314 corresponding to the second region 13B, thereby balancing the structural strength of the first housing 1314 in this region with the support provided to the flexible covering structure 132. Furthermore, the outer side of the first housing 1314 may be provided with protrusions surrounding the through holes 13141 along the honeycomb or grid-like structure. These protrusions can be embedded in the flexible covering structure 132; and / or the flexible covering structure 132 may be partially embedded in the through holes 13141, thereby increasing the bonding area between the flexible covering structure 132 in the second region 13B and the first housing 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 covering 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 covering 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 covering structure 132 to close the through hole 13141, thereby allowing the first shell 1314 and the cover plate 1316 to be surrounded by 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 facing away from the flexible covering structure 132, and a second flange 13161 may be provided on the inner wall surface of the cover plate 1316 facing away from the flexible covering structure 132, and the two ends of the second flange 13161 and the two ends of the first flange 13142 may extend in opposite directions 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 recessed groove in the second area 13B, and the cover plate 1316 may be embedded in the recessed groove to allow the inner wall surface of the cover plate 1316 to be flush with the inner wall surface of the first shell 1314 facing away from the flexible covering structure 132, thereby making the inner cavity surface of the front cavity 200 as flat as possible. Furthermore, a glue groove can be provided on the inner wall surface of the first shell 1314, facing away from the flexible covering structure 132. This glue groove can be located at the edge of the aforementioned sink and surround the multiple through-holes 13141. The glue in the glue groove can be glued to the first shell 1314 via the glue in the glue groove. In short, the first flange 13142 and the glue groove are both provided on the inner side of the first shell 1314, facing away from the flexible covering structure 132. The former can primarily correspond to the first region 13A, while the latter can primarily correspond to the second region 13B.

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

[0128] In some other embodiments, combined with Figure 27The flexible covering structure 132 may include an inner flexible body 1322 provided on the core shell 131 and an outer flexible body 1323 covering at least the inner flexible body 1322. The inner flexible body 1322 may be provided in the second area 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 covering structure 132 contacts the ear through the outer flexible body 1323. In short, the flexible covering structure 132 may also be provided as a double-layer structure to facilitate adjustment of the thickness and softness of the portion of the flexible covering structure 132 corresponding to the second area 13B. Accordingly, the orthographic projection of the elastic portion 112 on the above-mentioned reference plane (for example, the plane where YZ is located) and the orthographic projection of the inner flexible body 1322 on the above-mentioned reference plane may partially overlap. Similarly, the sound outlet 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 core 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 gaps between the aforementioned bone positions, that is, the blind holes 1321, are used to provide deformation space for the flexible covering 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 can be lower than that of the outer flexible body 1323, allowing the portion of the flexible covering structure 132 corresponding to the second region 13B to be more flexible. A blind hole 1321 can be recessed into the surface of the outer flexible body 1323 facing the core housing 131, and the inner flexible body 1322 can be positioned within the blind hole 1321 and in contact with the outer flexible body 1323. In other words, the blind hole 1321 can be provided in the outer flexible body 1323 to accommodate the more flexible inner flexible body 1322. Specifically, a through hole 13141 can be provided in the portion of the first housing 1314 corresponding to the second region 13B. The through hole 13141 is used to insert the molding core of the outer flexible body 1323. At this point, the outer flexible body 1323 can be formed on the first shell 1314 through an injection molding process. After the outer flexible body 1323 is formed, the molding core is removed, so that the outer flexible body 1323 forms a corresponding blind hole 1321, thereby forming a receiving area. The inner flexible body 1322 can be positioned in the blind hole 1321 via the through hole 13141, that is, positioned within this receiving area. The through hole 13141 can then be sealed 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 enhance the sealing of the aforementioned receiving area. Furthermore, the number of blind holes 1321 can be one, and the number of through holes 13141 can also be one. In this case, if the opening area of ​​the through hole 13141 is large, the cover plate 1316 can extend to partially overlap with the first shell 1314 in the first region 13A to increase the support area of ​​the first shell 1314 for the cover plate 1316. The cover plate 1316 may be provided with a connecting hole 13162 connecting the sound outlet 1311 and the front cavity 200 to avoid blocking the sound outlet 1311. In one 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 they may be formed in the aforementioned accommodation area through 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 they may be pre-formed into a block and filled in the aforementioned accommodation area. Of course, if 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 , the cover plate 1316 and other structural components can form a shell assembly, that is, modularized, to facilitate assembly.

[0132] Combine Figure 16The earphones 10 may further include a microphone 125 and a microphone 133 disposed on the retaining portion 13 and / or the connecting portion 12. The two microphones 125 and 133 may be electrically connected to the mainboard 15. The distance between the microphones 125 and 133 in the aforementioned length direction may be greater than the distance between the microphones 125 and 133 in the aforementioned height direction. In this way, while the size of the earphones 10 is relatively fixed, the distance between the two microphones 125 and 133 is maximized. This not only avoids interference between the two microphones 125 and 133, but also enhances the sound pickup and / or noise reduction effects of the earphones 10. Furthermore, the line connecting the orthographic projection of the microphone 125 on the aforementioned reference plane (e.g., the YZ plane) and the orthographic projection of the microphone 133 on the aforementioned reference plane may pass through the orthographic projection of the movement 14 on the aforementioned reference plane. In other words, if the movement 14 is arranged in a rectangular shape on the aforementioned reference plane, the two microphones 125 and 133 may be arranged generally along the diagonals of the movement 14.

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

[0134] As an example, the microphone 125 can be provided between the third housing 122 and the first housing 1314, and the microphone 133 can be provided between the second housing 1315 and the first housing 1314. The third housing 122 and the second housing 1315 can each be provided with a through hole on a side facing away from the first housing 1314 for the microphone to collect sound.

[0135] In some other embodiments, the earphone 10 may further 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 electrically connected to the mainboard 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 conducive to increasing the sound pickup effect. Among them, the present application uses 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 mainboard 15.

[0136] Furthermore, 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. Specifically, when the stick microphone 134 is connected to the holder 13, the processing circuit can use microphone 1341 as the primary microphone and at least one of microphone 133 and microphone 125 as the secondary microphone. The processing circuit can also perform noise reduction processing on the sound signal collected by the primary microphone using the sound signal collected by the secondary microphone, thereby improving the sound pickup effect. Accordingly, when the stick microphone 134 is separated from the holder 13, the processing circuit can switch microphone 133 and microphone 125 to an enabled state, with one of microphone 133 and microphone 125 serving as the primary microphone and the other as the secondary 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 holder 13, thereby saving energy while taking into account both sound pickup and / or noise reduction.

[0137] Combine Figure 16 and Figure 17The earphone 10 may further include a first charging electrode 126 provided on the retaining portion 13 or the connecting portion 12 and a second charging electrode 1164 provided on the hook-shaped portion 11, wherein one of the first charging electrode 126 and the second charging electrode 1164 is used as a positive charging electrode and the other is used as a negative charging electrode. In this application, the first charging electrode 126 is used as a positive charging electrode and the second charging electrode 1164 is used as a negative charging electrode as an example for illustrative 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, if the short circuit protection is met, the two charging electrodes can also be provided on one of the hook-shaped portion 11, the connecting portion 12 and the retaining portion 13. Furthermore, the two charging electrodes can be arranged to be invisible when worn, 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 set in the connecting part 12, and the second charging electrode 1164 can be set in the battery part 116. Specifically, the first charging electrode 126 can be at least partially set 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 set in the battery compartment 1161, for example, at the bottom of the battery compartment 1161 away from its open end. Among them, the first charging electrode 126 can be set in a columnar shape, and the second charging electrode 1164 can be set 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 electrodes to be exposed, so that the charging electrodes can contact the output electrodes on the charging box. In this way, compared with the columnar electrodes, the strip electrodes can increase the reliability of the charging electrodes because they have a larger contact area with the aforementioned output electrodes.

[0139] It should be noted that multiple, for example, two, first charging electrodes 126 can be provided at intervals on the connection portion 12 so that if one 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 earphones 10 to make good contact with the output electrodes on the battery box through magnetic attraction. The relative position of the output electrodes on the charging box can be adjusted as the charging electrodes on the earphones 10 change.

[0140] Combine Figure 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, display screens, touch circuit boards, etc., to facilitate user interaction with the headset 10.

[0141] By way of example, the second housing 1315 may include a bottom wall 13151 disposed opposite the first housing 1314 and a side wall 13152 connected to the bottom wall 13151, with the side wall 13152 extending toward the first housing 1314. A flexible touch circuit board 135 electrically connected to the motherboard 15 is provided on the side of the bottom wall 13151 facing the first housing 1314. The flexible touch circuit board 135 may be capacitive, resistive, or pressure-sensitive, without limitation. This allows for interaction with the earphones 10 without requiring additional through-holes in the core housing 131, thereby enhancing waterproof and dustproof performance. Specifically, the flexible touch circuit board 135 may include a touch portion 1351 for receiving touch operations and an electrical connection portion 1352 for connecting to the motherboard 15. For example, the flexible touch circuit board 135 may be secured to the motherboard 15 via a BTB connector. The touch portion 1351 may occupy greater than or equal to 70% of the area of ​​the bottom wall 13151. 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 recessed groove 13153, and the touch portion 1351 may be attached to the bottom of the recessed 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 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 while preventing the touch portion 1351 from being crushed. The depth of the recessed groove 13153 may be greater than or equal to the thickness of the touch portion 1351, and less than the sum of the thicknesses of the touch portion 1351 and the elastic pad 1353, so as to increase the pressing effect.

[0143] In some embodiments, the bottom wall 13151 may be provided with a plurality of, for example, three, heat-seal posts 13154 positioned around the recess 13153 and extending toward the mainboard 15. A line connecting the orthographic projections of at least two of the multiple heat-seal posts 13154 on the bottom wall 13151 may pass through the orthographic projection of the touch portion 1351 on the bottom wall 13151. Accordingly, the mainboard 15 may be provided with connection holes corresponding to the heat-seal posts 13154, allowing the mainboard 15 to be fitted through the connection holes and secured to the heat-seal posts 13154. In short, if the touch portion 1351 is rectangular, at least two heat-seal posts 13154 may be positioned generally along the diagonals of the touch portion. This improves the uniformity of force distribution on the mainboard 15. Of course, in other embodiments, the heat-seal posts 13154 may be replaced with screws, clips, etc., without limitation.

[0144] Based on the above 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. Accordingly, the bottom wall 13151 can be provided with a flange 13155 located on the periphery of the sink 13153, the flange 13155 extending toward the mainboard 15 and having 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. A silicone sleeve 13156 can also be provided 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 on the mainboard 15 can be increased.

[0145] Furthermore, the second housing 1315 may be provided with a metal antenna pattern to serve as the communication antenna for the headset 10. Accordingly, the bottom wall 13151 may be provided with antenna contacts 13157 located outside the recess 13153 and electrically connected to the metal antenna pattern. The mainboard 15 may be provided with metal springs for elastically abutting the antenna contacts 13157. In short, the mainboard 15 can be connected to the antenna contacts 13157 via the metal springs, thus avoiding unnecessary welding, thereby simplifying assembly and conserving space within the movement housing 131.

[0146] In summary, the connection between the mainboard 15 and the second shell 1315 can not only achieve its own fixation, but also achieve the pressing of the flexible touch circuit board 135, the sealing of the sound path of the microphone 133, and the electrical connection between the mainboard 15 and the metal antenna pattern, killing two birds with one stone.

[0147] Based on the above description, combined with Figure 21 and Figure 27The electronic components arranged on the hook portion 11 can be electrically connected to the main board 15 via the wire 117, and the electronic components arranged on the connection portion 12 can be directly electrically connected to the main board 15 via their leads because they are relatively close to the main board 15. Among them, the wire 117 can be arranged into multiple strands and can include the positive and negative leads of the battery 16, the signal line and shielding line of the detection component 1163, and the negative lead of the second charging electrode 1164; of course, the shielding line of the detection component 1163 can also be reused as a single lead with the lead of the second charging electrode 1164 to simplify the wiring. Furthermore, due to the limited size of the main board 15 and the large number of electronic components integrated thereon, the wire 117 or other leads can be first soldered to a flexible circuit board 136, and then connected to the main board 15 through the flexible circuit board 136. This helps to expand the size of the solder pads and the spacing between them, thereby reducing the difficulty of soldering and increasing the reliability of soldering.

[0148] By way of example, the flexible circuit board 136 may include at least a first connection region 1361 for electrically connecting to the battery 16 and a second connection region 1362 for electrically connecting to the mainboard 15. The second connection region 1362 may be positioned along the main surface of the mainboard 15, facilitating a snap-fit ​​connection between the flexible circuit board 136 and the mainboard 15. Furthermore, the first connection region 1361 may be bent laterally relative to the second connection region 1362 toward the mainboard 15 and may be provided with multiple solder pads, meaning that soldering occurs laterally to the mainboard 15. This reduces soldering complexity by eliminating interference from electronic components on the main surface of the mainboard 15. Furthermore, due to its thinness, the partial bending of the flexible circuit board 136 toward the side of the mainboard 15 also conserves space within the movement housing 131. Based on the above description, the multiple pads provided in the first connection region 1361 may include a first pad and a second pad for welding to the positive lead and the negative lead of the battery 16, respectively; a third pad and a fourth pad for welding to the positive lead and the negative lead of the charging electrode, respectively; and a fifth pad and a sixth pad for welding to the signal line and the shielding line of the detection element 1163, respectively. Since the shielding line of the detection element 1163 can be reused with the lead of the second charging electrode 1164 as a single lead, only one fourth pad and one sixth pad are required, which helps to increase the size of the other pads and the spacing between them.

[0149] Based on the above description, since the microphone 125 can be positioned on the connection portion 12, closer to the motherboard 15, the flexible printed circuit board 136 can be extended further to the connection portion 12. To this end, the flexible printed circuit board 136 can further include a third connection region 1363 connected to the first connection region 1361. The third connection region 1363 can be bent away from the motherboard 15 relative to the first connection region 1361, facilitating attachment of the third connection region 1363 to the first housing 1314 and / or the third housing 122. The microphone 125 can be positioned on the third connection region 1363 using a SMT process. In this case, the first connection region 1361 and the third connection region 1363 can each be perpendicular to the main surface of the motherboard 15, while the second connection region 1362 can be parallel to the main surface of the motherboard 15.

[0150] Unlike the first connection region 1361, the second connection region 1362 can be fastened to the mainboard 15 via a BTB connector. To this end, the flexible circuit board 136 may further include a transition region 1364 connecting the first connection region 1361 and the second connection region 1362. The transition region 1364 and the second connection region 1362 may be located on the same side of the mainboard 15. The length of the transition region 1364 is greater than the minimum distance between the first connection region 1361 and the second connection region 1362, facilitating the fastening of the first connection region 1361 to the mainboard 15. By way of example, the transition region 1364 may be configured as a multi-segment curved structure and may be disposed along the main surface of the mainboard 15.

[0151] Combine Figure 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, when energized, move within the magnetic field formed by the magnetic circuit system 141. The magnetic circuit system 141 may include structural components such as permanent magnets, a yoke, and a bracket. The specific structure and connection relationships are well known to those skilled in the art and will not be described in detail here. Furthermore, if the movement 14 is used in a bone conduction earphone, the coil 142 may be configured to drive a transducer. If the movement 14 is used in an air conduction earphone, the coil 142 may be configured to drive a diaphragm. Of course, the coil 142 may also be configured to drive both a transducer and a diaphragm. This application uses the example of coil 142 driving a diaphragm as an example. Based on this, the movement 14 may also include a diaphragm 143 connected between the coil 142 and the magnetic circuit system 141. The diaphragm 143 vibrates to produce sound that is transmitted to the ear through the sound outlet 1311.

[0152] Furthermore, the movement 14 may also include a metal shrapnel 144 fixed to the periphery of the magnetic circuit system 141, and the metal shrapnel 144 is electrically connected to the coil 142. At this time, the movement 14 is elastically pressed against the mainboard 15 by the metal shrapnel 144, thereby electrically connecting the coil 142 to the contacts on the mainboard 15. In this way, the metal shrapnel 144 replaces the welding wire in the related art to avoid unnecessary welding, thereby reducing the difficulty of assembly and eliminating the need to reserve welding space, thereby saving the internal space of the movement housing 131. Among them, the number of metal shrapnel 144 can be two, and they can be used as the positive lead and negative lead of the coil 142 respectively.

[0153] As an example, combining Figure 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 toward the fixed portion 1441 in a direction away from the magnetic circuit system 141. In short, the portion of the metal spring 144 used to electrically connect to the contact on the mainboard 15 protrudes from the magnetic circuit system 141. Furthermore, 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. 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 pre-store an elastic potential energy, thereby increasing the contact quality 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 housing 1314 facing the second housing 1315, and the mainboard 15 can be connected to the side of the second housing 1315 facing the first housing 1314. In this case, the second housing 1315 and the first housing 1314 snap together, allowing the movement 14 to elastically press its metal spring 144 against the mainboard 15, which is simple, reliable, and highly efficient. A metal spring 144 can be provided on opposite sides of the magnetic circuit system 141 to increase the stability of the second housing 1315 and the mainboard 15, together with the first housing 1314, in holding the movement 14. Accordingly, the diaphragm 143 can be enclosed with the first housing 1314 to form the front cavity 200. For example, the magnetic circuit system 141 is supported on the annular flange formed by 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 with the side of the diaphragm 143 facing away from the front cavity 200. In other words, the movement 14 (specifically, the diaphragm 143) can separate the accommodating cavity formed by the movement housing 131 into a front cavity 200 and a rear cavity 300, which are opposite to each other. In this case, the orthographic 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 mainboard 15 and the movement 14 are stacked in the aforementioned thickness direction, and the movement 14 is closer to the ear than the mainboard 15. This avoids the need for a through hole on the mainboard 15 connecting the side of the diaphragm 143 facing 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 reference plane (e.g., the YZ plane) and the orthographic projection of the mainboard 15 on the reference plane to the larger of the orthographic projections of the mainboard 15 and the movement 14 on the reference plane can be between 0.8 and 1. For example, the orthographic projection of the movement 14 on the reference plane and the orthographic projection of the mainboard 15 on the reference plane are substantially equal. Specifically, the ratio of the absolute value of the difference between the length dimension of the movement 14 and the length dimension of the mainboard 15 in the reference plane to the larger of the length dimension of the mainboard 15 and the movement 14 in the reference plane can be between 0 and 0.2. The dimensional relationship between the two in the height direction can also be the same or similar. In this way, given a fixed volume of the accommodating cavity formed by the movement housing 131, the movement 14 can be as large as possible, thereby facilitating increased loudness and a wider frequency response range of the earphones 10.

[0155] It should be noted that: Figure 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 embodiment provided in this application may be parallel to the above-mentioned 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 inventors of this application have found in their long-term research that when the mainboard 15 is provided on the side of the movement 14 away from the front cavity 200, the large number of electronic components of different sizes and shapes provided on the mainboard 15 will affect the sound quality of the earphone 10. Figure 22 or Figure 32 The retaining portion 13 may further include a partition 137 disposed within the movement housing 131. The partition 137 is primarily used to separate the movement 14 from the mainboard 15 and may be formed together with the movement 14 to form a rear cavity 300, i.e., an independent acoustic cavity. Specifically, the partition 137 may be located between the magnetic circuit system 141 and the mainboard 15 and may be formed together with the magnetic circuit system 141 to form a rear cavity 300. Of course, in other embodiments, a diaphragm may be provided on the mainboard 15 to ensure that the side of the mainboard 15 facing the movement 14 is as flat as possible.

[0157] As an example, the partition 137 can be connected to the movement 14, that is, modular, to facilitate assembly. Figure 25 and Figure 30 The partition 137 may include a bottom wall 1371 and a side wall 1372 connected to the bottom wall 1371. The bottom wall 1371 is separated 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 that the partition 137 and the movement 14 can be surrounded to form the rear cavity 300. The side of the partition 137 facing the magnetic circuit system 141 may also be provided with a dispensing groove 1373 and a positioning column 1374 that cooperates with the magnetic circuit system 141, so as to facilitate the precise 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 communication holes that allow the rear cavity 300 to communicate with the exterior 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. Furthermore, a sealing member that elastically supports and surrounds the aforementioned communication holes may be provided between the partition 137 and the core housing 131 to seal the acoustic path between the rear cavity 300 and the exterior of the earphone 10.

[0159] In this application, the movement housing 131, movement 14 and other structural parts can be generally set as a cubic structure or a cylindrical structure, which is not limited here. Among them, this application takes the movement 14 as an example of a cubic structure for illustrative explanation. 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. Among them, combined with Figure 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 above-mentioned length direction, and a second side wall 13722 and a fourth side wall 13724 spaced apart from each other in the above-mentioned height direction. Furthermore, 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-mentioned relevant 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 Figure 30 and Figure 31 The second side wall 13722 can also be omitted, and the first connecting hole 1375 can 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 sidewall 13723 can be further away from the sound outlet 1311 than the first sidewall 13721, that is, further away from the connecting portion 12 and closer to the free end of the retaining portion 13. The length dimension of the first connecting hole 1375 can be larger than the length dimension of the second connecting hole 1376, and the thickness dimension of the first connecting hole 1375 and the second connecting hole 1376 can be equal, so as to facilitate adjusting the actual area of ​​the effective connection area between the rear cavity 300 and the exterior of the earphone 10 of the first connecting hole 1375 and the second connecting hole 1376, respectively. Based on this, the first sidewall 13721 and the fourth sidewall 13724 can be connected by a first curved transition wall 13725 to avoid sharp structures such as right angles and sharp corners on the inner wall surrounding the rear cavity 300, thereby facilitating the elimination of standing waves. The first curved transition wall 13725 can be arc-shaped, and the radius of the arc can be greater than or equal to 2 mm. Similarly, the third sidewall 13723 and the fourth sidewall 13724 can be connected by a second curved transition wall 13726, and the radius of curvature of at least a portion of the inner wall surface of the first curved transition wall 13725 can be greater than the radius of curvature of the corresponding portion of the inner wall surface of the second curved transition wall 13726, thereby similarly avoiding the appearance of sharp structures such as right angles and sharp corners on the inner wall surrounding the rear cavity 300. Of course, in other embodiments, the second curved transition wall 13726 may not be provided. For example, the entire portion of the fourth sidewall 13724 adjacent to the third sidewall 13723 can be used to provide the second connecting hole 1376, such that the second connecting hole 1376 extends along the aforementioned length direction until it is flush with the inner wall surface of the third sidewall 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 until they are flush with the inner wall surface of the bottom wall 1371, so as to avoid the appearance of sharp structures such as right angles and sharp corners on the inner wall of the rear cavity 300, thereby facilitating the elimination of standing waves. Furthermore, 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 viewed in the above-mentioned height direction, so as to avoid the appearance of sharp structures such as right angles and sharp corners on the inner wall of the rear cavity 300. Of course, the inner wall surfaces of the side wall 1372 and the bottom wall 1371 can be connected entirely by arcs.

[0162] In some embodiments, combined Figure 25The heights of the second side wall 13722 and the fourth side wall 13724 relative to the bottom wall 1371 can both 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 respectively abut against the side of the movement 14 facing the bottom wall 1371. At this time, in the 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 corners on the inner wall forming the rear cavity 300, thereby facilitating the elimination of standing waves. Furthermore, 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. Another example is that 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. Furthermore, the outlet end of the first connecting hole 1375 may be covered with a first acoustic resistance net 1383, and the side of the first acoustic resistance net 1383 facing away from the side wall 1372 may also be covered with a protective cover. Similarly, the outlet end of the second connecting hole 1376 may be covered with a second acoustic resistance net 1384, and the side of the second acoustic resistance net 1384 facing away from the side wall 1372 may also be covered with a protective cover. The acoustic resistance mesh not only enhances waterproof and dustproof performance but also reduces sound leakage. The structural strength of the protective cover is greater than that of the acoustic resistance mesh, preventing the acoustic resistance mesh from being punctured by foreign objects. Furthermore, the porosity of the second acoustic resistance mesh 1384 can be less than or equal to the porosity of the first acoustic resistance mesh 1383.

[0163] By way of 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, with the second extension portion 13812 extending laterally from the first extension portion 13811. The first extension portion 13811 and the second extension portion 13812 may be respectively attached to the side of the sidewall 1372 and the bottom wall 1371 facing away from the rear chamber 300, thereby increasing the bonding area between the first sealing member 1381 and the partition 137. Accordingly, the first extension portion 13811 allows the area of ​​the first acoustic resistance mesh 1383 corresponding to the first communication hole 1375 to be exposed. For example, the first extension portion 13811 surrounds the first communication hole 1375 and the first acoustic resistance mesh 1383 thereon, thereby facilitating communication between the rear chamber 300 and the exterior of the earphone 10. Furthermore, the first extension portion 13811 can press and fix the first acoustic resistance mesh 1383 on the side of the side wall 1372 facing away from the rear cavity 300 to prevent the first acoustic resistance mesh 1383 from being separated from the side wall 1372 .

[0164] In this embodiment, the structure of the second sealing member 1382 and its connection relationship with the partition 137 can be the same or similar to that of the first sealing member 1381, and will not be described in detail here. Furthermore, the first sealing member 1381 and the second sealing member 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 Figure 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 groove of the first seal 1381 or the second shell 1315, and then the first seal 1381 can be fitted and fixed on the second shell 1315, and then the second shell 1315 and the first seal 1381 can jointly clamp the first acoustic resistance net 1383, and then proceed to subsequent assembly. Among them, a 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 mesh 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 Figure 33The following definitions are made: the front cavity 200 may have a first opening 201 that allows the front cavity 200 to communicate with the outside of the earphone 10, 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 canal than the first opening 201 and the third opening 302. The aforementioned first to third openings refer to the effective communication areas between the front cavity 200 or the rear cavity 300 and the outside of the earphone 10, that is, the 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 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 larger 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 smaller 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 offset from each other, then the second opening 301 corresponds to the portion of the pressure relief hole 1312 and the second connecting hole 1376 that is not blocked by each other. The third opening 302 is similar and will not be described in detail 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 , then the corresponding opening may naturally cease to exist.

[0168] Furthermore, for ease of description, the effective area described in this 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 provided. 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 in detail here. In this application, the effective area of ​​the third opening 302 may be smaller than the effective area of ​​the second opening 301.

[0169] In some embodiments, combined Figure 25 and Figure 30, the actual area of ​​the outlet end of the second connecting hole 1376 can be smaller 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 communication area between the sound-adjusting hole 1313 and the rear cavity 300 can be smaller than or equal to the actual area of ​​the effective communication area between the pressure relief hole 1312 and the rear cavity 300. The actual area of ​​the outlet end of the pressure relief hole 1312 can be larger 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 aforementioned length direction can be equal to the size of the outlet end of the pressure relief hole 1312 in the aforementioned length direction; and / or, the size of the outlet end of the sound-adjusting hole 1313 in the aforementioned thickness direction can be equal to the size of the outlet end of the pressure relief hole 1312 in the aforementioned thickness direction. In this way, not only can the actual area of ​​the effective connection area between the sound-tuning hole 1313 and the pressure relief hole 1312 and the exterior of the earphone 10 be adjusted by the size of the connecting holes to meet the corresponding acoustic design requirements, but the sound-tuning hole 1313 and the pressure relief hole 1312 can also be made to appear similar in appearance, thereby increasing appearance consistency and allowing them to use the same specification of acoustic resistance mesh to reduce material types / avoid mixing. Of course, in some other embodiments, the size of the sound-tuning hole 1313 can also vary with the change of the second connecting hole 1376, so that it appears significantly different in appearance from the pressure relief hole 1312, thereby increasing appearance recognition. Furthermore, the porosity of the second acoustic resistance mesh 1384 can also be less than or equal to the porosity of the first acoustic resistance mesh 1383, so that the effective area of ​​the effective connection area between the sound-tuning hole 1313 and the rear 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 rear 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 a hole or opening as used herein refers to a position equidistant from all four sides of a closed curve enclosing the hole or opening. For regular shapes such as circles and rectangles, the center of a hole or opening as used herein may be its geometric center; for other irregular shapes, the center of a hole or opening as used herein may be its centroid.

[0172] Combine Figure 34 The sound transmitted to the outside of the earphone 10 through the first opening 201 can be simply regarded as the first sound formed by the monopole sound source A1, and the sound transmitted to the outside of the earphone 10 through the second opening 301 can be simply regarded as the second sound formed by the monopole sound source A2. The second sound and the first sound can be in opposite phases, 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 (denoted as the "listening position") so that the user can hear a loud enough sound. Among them, the sound pressure at the listening position (denoted 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 is counted (denoted as P far ), can be used to characterize the strength of sound leakage radiated from the earphone 10 to the far field. far For example, the average value of the sound pressure at each point on the sphere is taken, or the surface integral of the sound pressure distribution at each point on the sphere is taken. 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 used as an indicator to evaluate 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 can 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 antihelix on the front side of the ear. At this time, the first opening 201 can be located between the antihelix and the upper ear root, and transmit sound to the ear hole. 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 can 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 Figure 35 and Figure 36, the ear is also equivalent to a baffle set near the listening position, which has the effects of converging and reflecting the sound transmitted to the outside of the earphone 10, thereby changing the sound field distribution, which is not only beneficial to increase the sound pressure at the listening position, but also 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 serve 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 inventors of this application have found in their long-term research that in the theoretical model of the acoustic dipole and the baffle, the Figure 37 , the parameter α is mainly affected by the following factors: the angle θ between the line between the two monopole sound sources (denoted as A1-A2) and the normal of the baffle, the spacing d between the two monopole sound sources, the distance D between the monopole sound source A1 and the listening position, the length L of the baffle and the distance B between it and the listening position. Among them, when the angle θ and the spacing d are constant, the larger the length L of the baffle and 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 fixed, for example, about 50-80mm, and the distance B is about 0. Furthermore, in order to increase the sound pressure at the listening position and 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 (for example, 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] Further, combined with Figure 38, taking "without baffle" as a reference, "with baffle" is obviously beneficial to reducing parameter α, that is, increasing the sound leakage reduction effect; when the angle θ=0°, the 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°. Among them, combined with Figure 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, combining Figure 39 and Figure 33 , based on any three mutually perpendicular basic planes 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 line O1-O0 and 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 line O1-O0 and 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 included angles θ1 , θ2 , and θ3 may be 34°, 5°, and 56°, respectively.

[0178] Furthermore, when the earphone 10 is worn, the retaining portion 13 can be in close contact with the front side of the ear, and the first opening 201 on the retaining portion 13 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 connecting 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] Where, 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 is also the tangent plane of the first opening 201. Accordingly, the average normal can also be parallel to the vibration direction of the movement 14 and the thickness direction. 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] Furthermore, based on the above description, the ear can be simply considered a baffle that cooperates with the acoustic dipole. A reference plane can then be determined by at least three non-collinear physiological locations on the anterior ear. For example, the lines connecting the superior auricle, the intertragical notch, and Darwin's tubercle form a reference plane (denoted as LA-LB-LD), which can be used to describe the baffle. Based on this, the angle between the line O1-O0 and the reference plane can be between 23° and 53°. In one specific embodiment, the angle between the line O1-O0 and the 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 stability of wearing, so there will also 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 sake of ease of description, we believe that this deviation is tolerable. As an example, combined with Figure 17 and Figure 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, unlike the aforementioned baffle, the front surface of the ear is not a flat, regular structure. Therefore, the other parameters related to parameter α were obtained through theoretical analysis and actual measurements. The actual measurements may refer to measurements performed after wearing the earphones 10 on the aforementioned simulator (e.g., the GRAS 45BC KEMAR).

[0185] As we all know, although the frequency range of sounds that can be perceived by normal ears is between 20Hz and 20kHz, it does not mean that all these sounds can be heard. Generally speaking, normal ears can 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, and then the frequency response curve of the first sound can be made as flat as possible in the mid-high frequency band and above, so as to enhance 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 reduce the user's sensitivity to sound leakage and 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 frequency of all resonance peaks 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 frequency of all resonance peaks 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 5 kHz. Preferably, the peak resonance frequencies of both the first mid-high frequency lowest resonance peak and the second mid-high frequency lowest resonance peak may be greater than or equal to 6 kHz. 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 can be less than or equal to 1 kHz, so that the second sound and the first sound can better cancel each other out of phase 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 generated by the resonance of the cavity and the standing wave peak generated by the cavity surface reflection of the cavity; the above-mentioned second mid-high frequency lowest resonance peak is similar to it and will not be repeated here.

[0187] Based on the above detailed description, when the user wears the earphones 10, they mainly listen to the first sound. Therefore, the peak resonant frequency of the first mid-high frequency lowest resonant peak has a greater impact on the listening effect. To this end, corresponding research is conducted on the first mid-high frequency lowest resonant peak to enhance the listening effect. Among them, the resonant 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 resonant frequency of the Helmholtz resonant cavity:

[0188]

[0189] Where f0 is the resonant frequency of the cavity resonance, c0 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. l generally depends on the wall thickness of the housing.

[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 resonant frequency corresponding to the cavity resonance, that is, the easier it is for the first mid-high frequency lowest resonant peak 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 can be approximately the product of the area of ​​the diaphragm 143 and the depth of the front cavity 200 in the vibration direction of the movement 14. Based on this, after the specifications of the movement 14 are selected, and on the premise that the vibration stroke of the diaphragm 143 is met, 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 can be less than or equal to 3mm, preferably less than or equal to 1mm.

[0191] Further, combined with Figure 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 antinode and 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 be derived from the standing wave, which generally satisfies the calculation formula:

[0192] n is a positive integer.

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

[0194] Obviously, the smaller the distance L, the higher the frequency corresponding to the standing wave peak, that is, the easier it is for the first mid-high frequency lowest resonant peak to shift to a higher frequency. As an example, on a reference plane perpendicular to the vibration direction of the movement 14 (e.g., the plane Y1Z1), 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 along the long axis of the movement 14, and a second front cavity surface 203 and a fourth front cavity surface 205 spaced apart from each other along the short axis 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, and the fourth front cavity surface 205 may be closer to the ear canal than the second front cavity surface 203. Furthermore, 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. Furthermore, 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 set to be circular, and for another example, the first opening 201 is set to be runway-shaped.

[0197] Combine Figure 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 sound energy of the front cavity 200 near the peak resonance frequency to suppress the sudden increase of the peak resonance intensity, making the frequency response curve flatter, thereby making the sound quality more balanced. As an example, and in combination with Figure 42 The difference between the peak resonance intensity of the first lowest mid-high frequency resonance peak when the opening connecting the Helmholtz resonant cavity 400 to the front cavity 200 is open (denoted as "HR_Y") and the peak resonance intensity of the first lowest mid-high frequency resonance peak when the opening connecting the Helmholtz resonant cavity 400 to the front cavity 200 is closed (denoted as "HR_N") can be greater than or equal to 3dB. Furthermore, an acoustic damping mesh can be provided at the opening connecting the Helmholtz resonant cavity 400 to the front cavity 200 to further adjust the frequency response curve. The porosity of the acoustic damping mesh can be greater than or equal to 3%.

[0198] Furthermore, there may be multiple Helmholtz resonant cavities 400 to better absorb acoustic energy near the peak resonant frequency of the front cavity 200. The multiple Helmholtz resonant cavities 400 may be arranged in parallel with the front cavity 200, for example, each of which is connected to the front cavity 200; or the multiple Helmholtz resonant cavities 400 may be arranged in series with the front cavity 200, for example, by connecting to the front cavity 200 via one of the cavities.

[0199] In some embodiments, combined Figure 22 The Helmholtz resonant cavity 400 can be disposed within the second region 13B, for example, within the flexible covering structure 132. Specifically, the blind hole 1321 within the flexible covering structure 321 not only provides a deformation space for the flexible covering structure 132 but also serves as the Helmholtz resonant cavity 400. Accordingly, a connecting hole is provided on the cover plate 1316 to connect the Helmholtz resonant cavity 400 with the front cavity 200.

[0200] In some other embodiments, combined Figure 27The Helmholtz resonant cavity 400 can be disposed within 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, with the third shell 122 pressed against the first flange to enclose and form the Helmholtz resonant cavity 400. Alternatively, a second flange can be provided on the inner wall surface of the third shell 122 facing the first shell 1314, with the first shell 1314 pressed against the second flange to enclose and form the Helmholtz resonant cavity 400. In short, the Helmholtz resonant cavity 400 can be formed by snapping the third shell 122 and the first shell 1314 together. Furthermore, the Helmholtz resonant cavity 400 can also be formed by a blow molding process and then placed and fixed within the connecting portion 12.

[0201] Based on the above detailed description, in order to 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 described in detail 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. Among them, combined with Figure 33 , the third opening 302 can be set 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. As an example, and in combination Figure 44 , the peak resonant frequency of the second lowest mid-high frequency resonance peak when the third opening 302 is in the open state (denoted as "Turn-on") can be shifted toward the high frequency compared to the peak resonant frequency of the second lowest mid-high frequency resonance peak when the third opening 302 is in the closed state (denoted as "Turn-off"), and the shift amount can be greater than or equal to 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 resonant frequency of the second lowest mid-high frequency resonance peak. Of course, the size of the second opening 301 in the long axis direction of the movement 14 can also be larger 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 Figure 43, the rear cavity 300 can 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 can 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 can be smaller than the actual area of ​​the second opening 301, so that the effective area of ​​the third opening 302 can 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 can be arranged in an arc shape when observed along the vibration direction of the movement 14, so as to avoid the appearance of sharp structures such as right angles and sharp corners on the inner wall surrounding the rear cavity 300, thereby facilitating the elimination of standing waves. Furthermore, at least one of the first cavity surface 303 and the third cavity surface 305 can be arranged in an arc shape when observed along the aforementioned short axis direction, which is also conducive to eliminating 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 above-mentioned 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 increase the distance between the third opening 302 and the first opening 201 as much as possible, thereby reducing 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 the corresponding portion of the second rear cavity surface 204 .

[0204] By way of 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. The first sub-rear cavity surface 3031 may be closer to the second opening 301 and further away from the second rear cavity surface 304 than the third sub-rear cavity surface 3033. Of the second and third sub-rear cavity surfaces 3032 and 3033, at least the second sub-rear cavity surface 3032 may be arc-shaped. For example, the second sub-rear cavity surface 3032 may be arc-shaped, with a radius greater than or equal to 2 mm. In this case, 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 minor axis of the movement 14 may gradually increase, while the angle between the tangent of the third sub-rear cavity surface 3033 and the minor axis may remain constant or gradually decrease.

[0205] It should be noted that the fixing assembly 20 described in this 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 assembly 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 be referred to the detailed description of any embodiment of this application, and will not be repeated here. In some other embodiments, combined with Figure 45 The fixing assembly 20 can be arranged in a ring shape and wrapped around the ear, for example Figure 45 As shown in (a); it can also be set as an ear hook and a back hanging structure and wrapped around the back of the head, for example Figure 45 As shown in (b); it can also be set as a head beam structure and placed around the top of the head, for example Figure 45 As shown in (c).

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

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

Claims

1. A headset, characterized in that: The earphone includes a hook-shaped portion, a connecting portion and a holding portion, wherein the connecting portion connects the hook-shaped portion and the holding portion, wherein in the wearing state, the hook-shaped portion is used to be hung between the back side of the user's ear and the head, and the holding portion is used to contact the front side of the ear, thereby allowing the holding portion and the hook-shaped portion to cooperate to clamp the ear, and the earphone does not block the external auditory canal of the ear when in the wearing state, and the holding portion is located on the side of the external auditory canal of the ear close to the top of the user's head; the hook-shaped portion includes an elastic portion connected to the connecting portion and a battery portion located at the free end of the hook-shaped portion, the ratio between the length of the elastic portion and the length of the hook-shaped portion is greater than or equal to 48%, the cross-sectional area of ​​at least a portion of the battery portion is greater than the maximum cross-sectional area of ​​the elastic portion, and a sound outlet is provided on the side of the holding portion facing the ear, and the holding portion can generate sound transmitted to the ear through the sound outlet.

2. The earphone according to claim 1, wherein The hook portion further includes a transition portion between the elastic portion and the battery portion. The transition portion has a cross-sectional area between the cross-sectional areas of the elastic portion and the battery portion and gradually increases in a direction from the elastic portion to the battery portion.

3. The earphone according to claim 2, wherein The transition portion is provided with a contoured recess corresponding to the rear profile of the ear portion on a side facing the ear portion.

4. The earphone according to claim 3, wherein On a reference cross section arranged along the central axis of the battery portion, a curvature radius of the contoured recess is smaller than a curvature radius of the other side of the transition portion facing away from the ear portion.

5. The earphone according to claim 1, wherein The retaining portion has a thickness direction, which is defined as the direction in which the retaining portion approaches or moves away from the ear when worn. The orthographic projection of the elastic portion on a reference plane perpendicular to the thickness direction partially overlaps with the orthographic projection of the retaining portion on the reference plane, and the orthographic projection of the battery portion on the reference plane and the orthographic projection of the retaining portion on the reference plane are staggered with each other.

6. The earphone according to claim 1, wherein The aspect ratio between the length and the outer diameter of the battery portion is less than or equal to 6.

7. The earphone according to claim 1, wherein The radial dimension of the elastic portion in any direction on the cross section is less than or equal to 5 mm.

8. The earphone according to claim 1, wherein A weight ratio between a total weight of the holding portion and a total weight of the battery portion is less than or equal to 4.

9. The earphone according to claim 1, wherein 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 approaches or moves away from the ear in the worn state, and the height direction is defined as the direction in which the retaining portion approaches or moves away from the top of the user's head in the worn state. In a natural state, and as viewed from the side of the headset toward the top of the user's head in the worn state, the retaining portion and the elastic portion are spaced apart in the thickness direction, and the connecting portion is arranged in an arc shape and connected between the retaining portion and the hook-shaped portion.

10. The earphone according to claim 9, characterized in that In the thickness direction, the minimum distance between the elastic portion and the retaining portion is greater than 0 and less than or equal to 5 mm; and / or, a section of the hook-shaped portion close to the connecting portion, the connecting portion, and an edge of the retaining portion toward the ear portion are arranged in a circuitous arc shape, and in a reference direction passing through an inflection point of the arc and parallel to the length direction, at a position 3 mm away from the inflection point, a minimum width of the arc along the thickness direction is between 1 mm and 5 mm; And / or, in the thickness direction, the distance between the center of the sound outlet hole and the elastic portion is between 3 mm and 6 mm.

Images