CN218830533U

CN218830533U - Earphone set

Info

Publication number: CN218830533U
Application number: CN202121753181.7U
Authority: CN
Inventors: 徐江; 郑泽英
Original assignee: Shenzhen Voxtech Co Ltd
Current assignee: Shenzhen Voxtech Co Ltd
Priority date: 2020-07-29
Filing date: 2021-07-29
Publication date: 2023-04-07
Anticipated expiration: 2031-07-29
Also published as: CN217159952U; CN217159954U; CN220123041U; CN218920583U; CN114286243A; CN114286222A; CN220087446U; CN218830540U; CN114286236A; CN217159953U; CN114286237A; CN114286223A; CN114286238A; CN218830539U; CN114286221A; CN217159955U; CN217159947U; CN218783883U; CN220653506U; CN217159944U

Abstract

The application mainly relates to an earphone, which comprises a hook-shaped part, a connecting part and a holding part, wherein the connecting part is connected with the hook-shaped part and the holding part, the hook-shaped part is used for being hung between the back side of the ear of a user and the head in a wearing state, the holding part is used for contacting the front side of the ear, and then the holding part is allowed to be matched with the hook-shaped part to clamp the ear; the holding part has a thickness direction, and the thickness direction is defined as the direction that the holding part is close to or keeps away from the ear under the wearing condition, and the orthographic projection of hook-shaped portion on the reference plane of perpendicular to thickness direction partially coincides with the orthographic projection of holding part on the reference plane to under the wearing condition, not only can the earphone follow two directions of the front side and the rear side centre gripping ear of ear, clamping-force mainly represents compressive stress moreover, is favorable to increasing the stability and the comfort level of wearing.

Description

Earphone set

Technical Field

The application relates to the technical field of sounding apparatus, in particular to an earphone.

Background

Earphones are widely used in daily life of people, and can be used in cooperation with electronic devices such as mobile phones and computers so as to provide hearing feasts for users. Wherein, according to the working principle of the earphone, the earphone can be generally divided into an air conduction earphone and a bone conduction earphone; according to the way that a user wears the earphone, the earphone can be generally divided into a head earphone, an ear-hanging earphone and an in-ear earphone; the headset can be generally classified into a wired headset and a wireless headset according to the interaction between the headset and the electronic device.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an earphone, which comprises a hook-shaped part, a connecting part and a holding part, wherein the connecting part is used for connecting the hook-shaped part and the holding part, the hook-shaped part is used for being hung between the back side of the ear of a user and the head in a wearing state, the holding part is used for contacting the front side of the ear, and then the holding part and the hook-shaped part are allowed to be matched to clamp the ear; the holding part has a thickness direction, the thickness direction is defined as a direction in which the holding part is close to or far away from the ear part in a wearing state, and an orthographic projection of the hook part on a reference plane vertical to the thickness direction is overlapped with an orthographic projection part of the holding part on the reference plane.

The beneficial effect of this application is: the application provides an earphone not only can follow two direction centre gripping ears of front side and rear side of ear under the wearing state, and clamping-force mainly represents compressive stress moreover, is favorable to increasing stability and the comfort level of wearing.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic front side view of a user's ear profile according to the present application;

fig. 2 is a schematic front view of an embodiment of a headset provided in the present application;

fig. 3 is a schematic left side view of the headset of fig. 2;

FIG. 4 is a schematic front side view of the headset of FIG. 2 in a worn state;

FIG. 5 is a rear side view angle schematic of the headset of FIG. 2 in a worn state;

FIG. 6 is a schematic diagram of the mechanical model of the earphone of FIG. 2 in a worn state;

fig. 7 is a schematic front view of another embodiment of the earphone provided by the present application;

fig. 8 is a left side view of the headset of fig. 7;

FIG. 9 is a schematic front side view of the headset of FIG. 7 in a worn state;

FIG. 10 is a rear side view angle schematic of the headset of FIG. 7 in a worn state;

FIG. 11 is a schematic diagram of the mechanical model of the headset of FIG. 7 in a worn state;

fig. 12 is a schematic top view of another embodiment of a headset according to the present application;

fig. 13 (a) and (b) are schematic front view structures of two further embodiments of the earphone provided by the present application;

fig. 14 is a schematic structural diagram of yet another embodiment of a headset provided by the present application;

FIG. 15 is a schematic diagram of the mechanical model of FIG. 14 with the headset in a worn state;

FIG. 16 is a schematic diagram illustrating a configuration of an embodiment of a headset according to the present application on a side facing away from an ear;

FIG. 17 is a schematic diagram of a structure of an ear facing side of an embodiment of the headset provided herein;

FIG. 18 is a schematic view of an embodiment of the headset provided herein, as viewed from the top of the user's head;

fig. 19 is a schematic view of an exploded structure of an embodiment of the earphone provided by the present application;

fig. 20 is a schematic view of a disassembled structure of an embodiment of the earphone provided by the present application;

fig. 21 is a schematic view of an exploded structure of an embodiment of the earphone provided by the present application;

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

FIG. 23 is a schematic diagram of the structure of one embodiment of a headset provided herein on the side facing away from the ear;

FIG. 24 is a schematic view of an embodiment of the headset of the present application as viewed from the top side of the user's head;

fig. 25 is a schematic view of a disassembled structure of an embodiment of the earphone provided by the present application;

fig. 26 is a schematic structural diagram of a side of an embodiment of a movement provided by the present application, which faces a main board;

fig. 27 is a schematic view of a disassembled structure of an embodiment of the earphone provided by the present application;

FIG. 28 is a schematic view of a side of an embodiment of a headset according to the present application that faces away from the ear;

FIG. 29 is a schematic view of an embodiment of the headset of the present application as viewed from the top of the user's head;

fig. 30 is a schematic view of a disassembled structure of an embodiment of the earphone provided by the present application;

FIG. 31 is a schematic view of a portion of an embodiment of a spacer shown in a configuration facing a cartridge;

FIG. 32 is a cross-sectional schematic view of an embodiment of a headset provided herein;

FIG. 33 is a cross-sectional view of an embodiment of a headset provided herein;

FIG. 34 is a schematic diagram of the acoustic field distribution of the acoustic dipole provided herein;

FIG. 35 is a schematic view of the acoustic field distribution of the acoustic dipole with a baffle as provided herein;

FIG. 36 is a far field sound pressure diagram of whether the acoustic dipole is matched with a baffle as provided herein;

FIG. 37 is a schematic diagram of a theoretical model of an acoustic dipole with a baffle as provided herein;

FIG. 38 is a graphical illustration of the relationship between the parameter α and the angle θ provided herein;

FIG. 39 is a schematic diagram illustrating an embodiment of an acoustic dipole in relation to an ear provided herein;

FIG. 40 is a schematic diagram of a structure of an ear facing side of an embodiment of the headset provided herein;

FIG. 41 is a schematic diagram illustrating the structure of an embodiment of a headset provided herein;

FIG. 42 is a schematic frequency response curve diagram of an embodiment of a headset provided herein;

FIG. 43 is a schematic diagram of the rear cavity of an embodiment of the earphone provided by the present application;

FIG. 44 is a schematic frequency response graph of an embodiment of a headset provided herein;

fig. 45 (a), (b), and (c) are schematic structural diagrams of three embodiments of the headset provided in the present application in a wearing state.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive work are within the scope of the present application.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. It is explicitly and implicitly understood by a person skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, fig. 1 is a schematic front side structure diagram of a profile of an ear of a user according to the present application.

As shown in fig. 1, the ear 100 of the user has a certain depth and volume in a three-dimensional space, such as a concha boat 103 and a triangular fossa 104, in addition to an external ear canal 101 and a concha cavity 102 near the external ear canal, and can also be used for meeting the wearing requirements of the headset. In other words, by properly designing the structure of the headset and using the parts of the user's ear 100 other than the external auditory meatus 101, it is possible to achieve wearing of the headset and propagation of mechanical vibration, as well as "liberating" the external auditory meatus 101 of the user, thereby increasing the physical health of the user and reducing the occurrence probability of traffic accidents. Based on this, the present application proposes an earphone in a new way, and mainly uses the upper half of the user's ear 100 (specifically, the area where the cymba concha 103, the triangular fossa 104, the antihelix 105, the otoboat 106, the helix 107, etc. are located) to implement wearing of the earphone and propagation of mechanical vibration. Of course, the user may further use the earlobe 108 or the like in order to improve the wearing comfort and reliability of the earphone. Further, for ease of description, more specific physiological locations on ear 100 may be further identified, such as the upper ear root LA at the anterior edge of helix 107, which is connected to the head, darwinian tubercle LB at helix 107, tragus notch LC at the end of antihelix 105 near the earlobe 108 and facing concha cavity 102, and intertragic notch LD at the end of concha cavity 102 near the earlobe 108. Of course, a physiological location such as a darwinia nodule may not be apparent or even present on some users' ears due to user-to-user variability, but this does not mean that other users do not have the physiological location on their ears.

It should be noted that: although the external auditory meatus has a certain depth to extend to the tympanic membrane, for convenience of description, and in conjunction with fig. 1, the external auditory meatus refers to an entrance thereof facing away from the tympanic membrane, that is, an earhole, in particular, in the case of the present application without specific description. Further, the term "front side of the ear" as used herein refers to the side of the ear facing away from the head, e.g., fig. 1, as opposed to the "back side of the ear" which refers to the side of the ear facing the head, both of which are directed toward the ear of the user.

Referring to fig. 2 to 5 together, fig. 2 is a schematic front view, fig. 3 is a schematic left view, fig. 4 is a schematic front side view, and fig. 5 is a schematic rear side view, of the headset of fig. 2. It should be noted that: three directions X, Y and Z of the earphone are illustrated in fig. 2, mainly to illustrate three planes XY, XZ and YZ for convenience of corresponding description hereinafter. Accordingly, all directional indicators in this application (such as up, down, left, right, front, back \8230;) are used primarily to explain the relative positional relationships between the components, movement, etc. at a particular pose (as shown in FIG. 2); if the particular gesture changes, the directional indication changes accordingly.

As shown in fig. 2 and 3, the earphone 10 may include a hook 11, a connection part 12, and a holding part 13. Wherein the connecting portion 12 connects the hook portion 11 and the holding portion 13, so that the earphone 10 is curved in a three-dimensional space when in a non-wearing state (i.e., a natural state). In other words, the hook 11, the connecting portion 12, and the holding portion 13 are not coplanar in three-dimensional space. So configured, when the earphone 10 is in a wearing state, as shown in fig. 4 and 5, the hook portion 11 may be mainly used for being hung between the back side of the user's ear and the head, and the holding portion 13 may be mainly used for contacting the front side of the user's ear, thereby allowing the holding portion 13 and the hook portion 11 to cooperate to clamp the ear. Illustratively, the connecting portion 12 may extend from the head portion to the outside of the head portion, and cooperate with the hook portion 11 to provide the holding portion 13 with a pressing force against the front side of the ear portion. Wherein, the holding portion 13 can specifically support the area at positions such as cymba concha, triangular fossa, antihelix under the effect of the compressive force to do not shelter from the external auditory canal of ear when making earphone 10 be in wearing state. As an example, when the headset 10 is in a wearing state, the projection of the holding portion 13 on the ear of the user mainly falls within the helix range of the ear; further, the holding portion 13 may be located on the side of the external auditory meatus of the ear near the top of the user's head, and in contact with the helix and/or the antihelix. Thus, the holding part 13 can be prevented from blocking the external auditory canal, and the ears of the user can be liberated; it is also possible to increase the contact area between the holding portion 13 and the ear, thereby improving the wearing comfort of the earphone 10.

It should be noted that: a simulator having a head and (left and right) ears, such as GRAS 45BC KEMAR, can be made based on ANSI: S3.36, S3.25 and IEC:60318-7 standards, and thus the description of "user wearing headphones" or "headphones in a worn state" in this application can refer to headphones being worn on the ears of the aforementioned simulator. Based on this, the "wearing state" described in the present application may refer to a normal wearing state after the earphone is worn on the ear of the aforementioned simulator; for convenience of description, the normal wearing state may be further illustrated from the front side, the rear side, and other perspectives of the ear, such as the normal wearing state shown in fig. 4 and 5, and the normal wearing state shown in fig. 9 and 10. Of course, since there are individual differences among users, there may be a certain difference in the actual wearing state of the headset 10 compared to the aforementioned normal wearing state.

For a user of a type such as an adult male, the ear thickness of the user is often thicker (commonly called "thick ear"), and by reasonably designing the structural parameters such as the shape and the size of the connecting portion 12 and the connection relationship between the connecting portion and the hook portion 11, the holding portion 13, as will be described in the following text as an example, it is possible to ensure that the earphone 10 fits the ear as much as possible to improve the wearing stability of the earphone 10, and it is also possible to avoid the earphone 10 from excessively clamping the helix near the upper base of the ear, that is, from naturally bypassing the upper base of the ear, so as to improve the wearing comfort of the earphone 10. Further, for users of children, pre-adults, adult women, etc., the ear thickness is often thin (commonly referred to as "thin ear"), especially compared to the thickness of the ear of an adult male, in order to increase the fitting degree of the earphone 10 to the ear of the user when the earphone is worn, the size of the connecting portion 12 may be small, for example, the connecting portion 12 is a circular arc transition between the holding portion 13 and the hook portion 11.

Further, the earphone 10 may further include a movement 14, a main board 15, and a battery 16. The movement 14 is mainly used for converting an electrical signal into corresponding mechanical vibration (i.e., "sound production"), and may be electrically connected to the main board 15 and the battery 16 through corresponding conductors; the main board 15 is mainly used for controlling the sound production of the movement 14, and the battery 16 is mainly used for providing electric energy for the sound production of the movement 14. Of course, the earphone 10 described herein may further include microphones such as a microphone and a microphone, and may further include Communication devices such as bluetooth and NFC (Near Field Communication), which are electrically connected to the main board 15 and the battery 16 through corresponding conductors to implement corresponding functions.

As an example, the movement 14 may be fixed on the holding portion 13, and when the earphone 10 is in a wearing state, the movement 14 can be tightly pressed against the ear of the user. Further, when the earphone 10 is worn, since the holding portion 13 is mainly located at the front side of the ear of the user, as shown in fig. 4, the holding portion 13 may be provided with some function keys (not shown in fig. 2) for facilitating the user to interact with the earphone 10 in addition to fixing the movement 14. Based on this, the main board 15 may also be provided at the holding portion 13 to shorten the routing distance between the movement 14 and other components such as function keys and the like and the main board 15. It is worth noting that: since the holding portion 13 can be provided with the movement 14, the main board 15, the function keys, and the like, and is located on the front side of the user's ear when the earphone 10 is in the wearing state, the battery 16 can be provided in the hook portion 11 and is mainly located between the back side of the user's ear and the head when the earphone 10 is in the wearing state, as shown in fig. 5. So configured, not only can the capacity of the battery 16 be increased to improve the cruising ability of the earphone 10; the weight of the headset 10 may also be balanced to improve the stability and comfort of the headset 10 in wearing. At this time, the weight of the earphone 10 can be distributed relatively evenly at both ends, and the ear of the user can also be used as a fulcrum to support the earphone 10 when the earphone 10 is in a wearing state, so that the earphone 10 can not slide off at least in a non-moving state when the earphone 10 is in the wearing state. Of course, it follows that the user's ear can bear a large portion of the weight of the headset 10, which can be prone to discomfort in long-wear scenarios. For this reason, the hook portion 11, the connecting portion 12, the holding portion 13, etc. may be made of a material with a relatively soft texture (e.g., polycarbonate, polyamide, abs, etc.) so as to improve the wearing comfort of the earphone 10. Further, in order to improve the structural strength of the earphone 10, an elastic wire such as spring steel, titanium alloy, titanium nickel alloy, chrome molybdenum steel, etc. may be further provided in the hook 11, the connection part 12, the holding part 13, etc.

Further, different users may have great differences in age, sex, gene-controlled trait expression, etc., resulting in different users having different ear and head sizes and traits. For this purpose, the hook portion 11 is rotatable relative to the connecting portion 12, or the holding portion 13 is rotatable relative to the connecting portion 12, or one part of the connecting portion 12 is rotatable relative to another part, so that the relative positional relationship among the hook portion 11, the connecting portion 12, and the holding portion 13 in the three-dimensional space can be adjusted, so that the headset 10 can be adapted to different users, that is, the application range of the headset 10 to the user in terms of wearing can be increased. For example: the connecting part 12 is made of deformable materials such as soft steel wires, and a user can adjust the relative positions of the hook-shaped part 11, the connecting part 12 and the holding part 13 in a three-dimensional space by bending the connecting part 12 to enable one part to rotate relative to the other part, so that the wearing requirements of the user are met. For another example: the connecting part 12 is provided with a rotating shaft mechanism 121, and a user can also adjust the relative positions of the hook part 11, the connecting part 12 and the holding part 13 in the three-dimensional space through the rotating shaft mechanism 121, so as to meet the wearing requirements of the user. The detailed structure of the rotating shaft mechanism 121 is within the understanding of those skilled in the art, and will not be described in detail here. Further, if the hook portion 11 is movably connected to the connecting portion 12 through the rotating shaft mechanism 121, the hook portion 11 can rotate relative to the connecting portion 12; if the holding part 13 is movably connected with the connecting part 12 through the rotating shaft mechanism 121, the holding part 13 can rotate relative to the connecting part 12; if one part of the connecting portion 12 is movably connected to the other part through the rotating shaft mechanism 121, one part of the connecting portion 12 can rotate relative to the other part.

Referring to fig. 6, fig. 6 is a mechanical model diagram of the earphone in fig. 2 in a wearing state. It should be noted that: the YZ plane in FIG. 6 may be considered to be the plane of the user's head; the ABC section in fig. 6 may be regarded as a hook, the CD section in fig. 6 as a connector, and the DEF section in fig. 6 as a retainer. Further, point C in fig. 6 may correspond to the area of the ear near the head in fig. 1 (the area indicated by the dashed box C in fig. 1).

As shown in fig. 4-6, when the earphone 10 is worn, the ABC section is located mainly at the rear side of the user's ear, the DEF section is located mainly at the front side of the user's ear, and the CD section is adapted to the thickness of the user's ear. At this point, the BC section, CD section, and DEF section can form a structure similar to a "clip" to enable the headset 10 to be held on the user's ear to form a basic wearing situation. The following is an exemplary description of the force applied to the headset 10 during wearing and its stability, etc.:

as shown in fig. 6, the hook 11 is bent toward the head of the user in a direction from a first connection point C between the hook 11 and the connection 12 to a free end (e.g., an end at which point a in fig. 6 is located) of the hook 11, 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 defined points in a mechanical model, and when the earphone is actually worn, due to differences in physiological structures of the head, the ear and the like of different users, the earphone 10 is actually worn, and the position of the earphone 10, which is in contact with the head when the earphone is actually worn, may correspond to the free end of the hook-shaped portion 11, or may be any point between the free end and the first contact point B; certainly, the AB segment may also partially or wholly abut against the head of the user, and the mechanical model and the stabilization principle in actual wearing are the same as those in the above technical solutions, so that those skilled in the art can easily know and adjust the fitting content without creative labor based on the technical solutions of the present application, and details are not described here. It is so arranged that the hook 11 forms a lever structure with the first contact point B as a fulcrum. At this time, the free end of the hook portion 11 is pressed against the head of the user, and the head of the user provides a force directed to the outside of the head at the second contact point a, which is converted into a force directed to the head at the first contact point C by the lever structure, thereby providing the holding portion 13 with a pressing force against the front side of the ear portion via the connecting portion 12.

It should be noted that: in order to enable the free end of the hook 11 to be pressed against the head of the user when the headset 10 is in the wearing state and to enable the head of the user to provide a force directed outward of the head at the second contact point a, at least the following conditions need to be satisfied: the included angle formed between the free end of the hook-shaped part 11 and the YZ plane when the earphone 10 is in a non-wearing state is larger than the included angle formed between the free end of the hook-shaped part 11 and the YZ plane when the earphone 10 is in a wearing state. Wherein the larger the included angle formed between the free end of the hook-shaped part 11 and the YZ plane when the earphone 10 is in the non-wearing state, the better the free end of the hook-shaped part 11 can be pressed against the head of the user when the earphone 10 is in the wearing state, and the larger the force directed to the outside of the head can be provided by the head of the user at the second contact point a.

It is worth noting that: when the free end of the hook portion 11 is pressed against the head of the user, besides enabling the head of the user to provide a force pointing to the outside of the head at the second contact point a, at least the segment BC of the hook portion 11 can form another pressing force on the rear side of the ear, and can cooperate with the pressing force formed by the holding portion 13 on the front side of the ear to form a "front-back pinching" pressing effect on the ear of the user, thereby improving the wearing stability of the earphone 10.

Further, the battery 16 may be disposed mainly at the AB section of the hook portion 11, so as to overcome the dead weight of the holding portion 13 and the inner core 14, the main board 15, etc. therein, and further improve the stability of the earphone 10 in terms of wearing. Of course, the surface of the hook-shaped portion 11 contacting the ear and head of the user may be a frosted surface, a textured surface, or the like, so as to increase the friction between the hook-shaped portion 11 and the ear and head of the user, so as to overcome the self-weight of the holding portion 13 and the inner movement 14 and the main board 15 therein, and further improve the wearing stability of the earphone 10. Further, the free end of the hook 11 (especially the area of point a) can be deformed, so that when the earphone 10 is in a wearing state, the free end of the hook 11 is pressed against the head of the user and deformed, so that the contact area between the free end of the hook 11 and the head of the user is increased, and the wearing comfort and stability of the earphone 10 are improved. For example: the hook 11 is formed by two-shot molding, and the elastic modulus of the free end (especially the area where the point A is located) is smaller than that of the other areas, so that the deformation capacity of the free end is increased. For another example: the free end of the hook 11 is provided with a hole 111, which is a hollow structure to increase the deformation capability of the free end. The holes 111 may be through holes and/or blind holes, and may be one or more, and the axial direction thereof may be perpendicular to the contact surface between the free end of the hook 11 and the head of the user.

Illustratively, the linear distance between the projection of point C on the YZ plane and the projection of section EF on the YZ plane may be 10-17mm, preferably 12-16mm, more preferably 13-15mm. The angle between the projection of the BC-segment on the XY-plane and the projection of the DE-segment on the XY-plane is 0-25 °, preferably 0-20 °, more preferably 2-20 °. Further, the angle between the segment AB and the normal on the XY plane passing through point B is 0-25 °, preferably 0-20 °, more preferably 2-20 °. Further, in some embodiments, the linear distance between the projection of point C on the XY plane and the projection of segment EF on the XY plane may be 2-4mm, preferably 2.8mm. Of course, in other embodiments, the linear distance between the projection of point C on the XY plane and the projection of segment EF on the XY plane may be 1-4mm, preferably 2.5mm. In this way, the connecting portion 12 can pass around the upper base of the ear in the wearing state, and the wearing comfort of the earphone 10 can be improved.

Based on the above detailed description, the present application, on the one hand, performs a reasonably balanced distribution of the weight of the headset 10, so that the user's ear can support the headset 10 as a fulcrum when the headset 10 is in a wearing state; on the other hand, a connecting part 12 is provided between the hook-shaped part 11 and the holding part 13 of the earphone 10, so that the connecting part 12 is matched with the hook-shaped part 11 when the earphone 10 is in a wearing state to provide pressing force to the front side of the ear for the holding part 13, and further, the earphone 10 can be firmly attached to the ear of the user when in the wearing state. With this arrangement, it is possible to improve both the wearing stability of the headphone 10 and the sound-emitting reliability of the headphone 10.

Referring to fig. 7 to 11 together, fig. 7 is a schematic front view structure diagram of another embodiment of the headset provided by the present application, fig. 8 is a schematic left view structure diagram of the headset in fig. 7, fig. 9 is a schematic front side view angle diagram of the headset in fig. 7 in a wearing state, fig. 10 is a schematic rear side view angle diagram of the headset in fig. 7 in the wearing state, and fig. 11 is a schematic mechanical model diagram of the headset in fig. 7 in the wearing state. It should be noted that: the YZ plane in FIG. 11 may be considered as the plane of the user's head; the ABC section in fig. 11 can be regarded as a hook, the CD section in fig. 11 can be regarded as a connector, and the DEF section in fig. 11 can be regarded as a retainer. Further, point C in FIG. 11 may correspond to the area of the ear near the upper head end in FIG. 1 (shown as dashed box C in FIG. 1).

the main differences from the above embodiments are: in the present embodiment, as shown in fig. 7 and 8, the hook portion 11 is integrally closer to the holding portion 13, so that when the earphone 10 is in a wearing state, as shown in fig. 9 and 10, the free end of the hook portion 11, which is away from the connecting portion 12, acts on the rear side of the ear of the user, rather than pressing against the head of the user.

As shown in fig. 11, in a direction from a first connection point C between the hook portion 11 and the connection portion 12 to a free end (e.g., an end at a point a in fig. 11) of the hook portion 11, the hook portion 11 is bent toward a rear side of the ear portion and forms a first contact point B with the rear side of the ear portion, and the holding portion 13 forms a second contact point F with the front side of the ear portion. Here, with the earphone 10, the distance of the first contact point B and the second contact point F in the extending direction of the connecting portion 12 in the natural state (i.e., the unworn state) is smaller than the distance of the first contact point B and the second contact point E in the extending direction of the connecting portion 12 in the worn state, thereby providing the holding portion 13 with a pressing force against the front side of the ear. In other words, the distance between the first contact point B and the second contact point F in the extension direction of the connecting portion 12 in the natural state of the earphone 10 is smaller than the thickness of the user's ear, so that the earphone 10 can be clipped to the user's ear like a "clip" in the wearing state.

Further, a first connection BC is provided between the first contact point B and the first connection point C, and a second connection EF is provided between the second contact point F and a second connection point E of the holding portion 13 and the connection portion 12.

Further, the hook 11 may also extend in a direction away from the connecting portion 12, that is, the entire length of the hook 11 is extended, so that when the earphone 10 is in a wearing state, the hook 11 may also form a third contact point a with the rear side of the ear, and the first contact point B is located between the first contact point C and the third contact point a and close to the first contact point C. Here, with the earphone 10, the distance between the projections of the first contact point B and the third contact point a on a reference plane (for example, YZ plane in fig. 11) perpendicular to the extending direction of the connecting portion 12 in the natural state is smaller than the distance between the projections of the first contact point B and the third contact point a on a reference plane (for example, YZ plane in fig. 11) perpendicular to the extending direction of the connecting portion 12 in the worn state. With this arrangement, not only can the free end of the hook portion 11 be pressed against the rear side of the ear of the user, but also the ABC segment can be C-shaped, wherein the third contact point a can be located in the area of the ear close to the earlobe, so that the hook portion 11 can clamp the ear of the user in the vertical direction (as shown by the arrow Z in fig. 11) to overcome the self weight of the holding portion 13. In addition, after the whole length of the hook part 11 is extended, not only the ear of the user can be clamped in the vertical direction, but also the contact area between the hook part 11 and the ear of the user can be increased, that is, the friction force between the hook part 11 and the ear of the user can be increased, thereby improving the stability of the earphone 10 in wearing.

Referring to fig. 12, fig. 12 is a schematic top view of another embodiment of the earphone provided by the present application.

The main differences from any of the above embodiments are: in this embodiment, the holding portion 13 not only abuts against the front side of the ear of the user, but also can be further extended and held in the cymba concha and/or the triangular fossa of the ear. With this arrangement, the holding portion 13 can be stopped by the helix of the ear at least in the extending direction of the connecting portion 12, so as to prevent the holding portion 13 from turning outward when the earphone 10 is worn, thereby improving the wearing stability of the earphone 10.

Illustratively, as shown in fig. 12, the earphone 10 further includes an extension 17, and the extension 17 is connected to the holding portion 13. Wherein, in the extending direction (arrow X in fig. 12) of the connecting portion 12, the extending portion 17 and the holding portion 13 have a gap, which may be less than or equal to the thickness of the helix of the ear. This is arranged so that the extension 17 can extend into the cymba concha and/or the triangular fossa of the ear when the headset 10 is in a worn state. At this time, since the cymba concha and/or the deltoid fossa have a certain depth and volume in the three-dimensional space, the holding part 13 can be hooked by the helix of the ear when the extending part 17 is inserted into the cymba concha and/or the deltoid fossa, so as to prevent the holding part 13 from turning outward when the earphone 10 is in the wearing state, thereby improving the wearing stability of the earphone 10. Meanwhile, the holding part 13 is pressed against the front side of the ear under the effect of the pressing force, and the holding part and the ear are matched with each other, so that the wearing stability of the earphone 10 is improved.

Referring to fig. 13, (a) and (b) in fig. 13 are schematic front view structures of two further embodiments of the earphone provided by the present application.

The main differences from any of the above embodiments are: in this embodiment, the holding portion 13 has a multi-stage structure so as to adjust the relative position of the movement 14 with respect to the entire structure of the earphone 10. The arrangement is such that when the earphone 10 is worn, the external auditory canal of the ear is not shielded, and the movement 14 is close to the external auditory canal as much as possible.

As an example, as shown in fig. 13 (a), the holding portion 13 may include a first holding section 131a, a second holding section 132a, and a third holding section 133a connected end to end in this order. One end of the first holding section 131a, which is away from the second holding section 132a, is connected to the connecting portion 12, and the third holding section 133a is mainly used for arranging structural members such as the movement 14 and the main board 15. Further, the second retaining section 132a is folded back relative to the first retaining section 131a and has a spacing, i.e., the two are in a U-shaped configuration.

As an example, as shown in fig. 13 (b), the holding portion 13 may include a first holding section 131b, a second holding section 132b, and a third holding section 133b connected end to end in this order. One end of the first holding section 131b, which is away from the second holding section 132b, is connected to the connecting portion 12, and the third holding section 133b is mainly used for arranging structural members such as the movement 14 and the main plate 15. Further, the second holding section 132b is bent with respect to the first holding section 131b such that the third holding section 133b is spaced apart from the first holding section 131 b.

Referring to fig. 14 and 15 together, fig. 14 is a schematic structural diagram of a further embodiment of the headset provided by the present application, and fig. 15 is a schematic mechanical model diagram of the headset in fig. 14 in a wearing state. It should be noted that: the YZ plane in FIG. 15 may be considered to be the plane of the user's head; the BC section in fig. 15 may be regarded as a hook, the CD section in fig. 15 as a connector, the DEF section in fig. 15 as a holder, and the GH section in fig. 15 as an extension. Further, point C in FIG. 15 may correspond to the area of the ear near the upper head end in FIG. 1 (as indicated by the dashed box C in FIG. 1).

The main differences from any of the above embodiments are: in the present embodiment, as shown in fig. 14, the length of the hook portion 11 is shorter, and the included angle between the hook portion 11 and the connection portion 12 is smaller; the extension 17 is connected to the holding portion 13 and has a gap with the holding portion 13, which may be less than or equal to the thickness of the helix of the ear. So arranged that when the earphone 10 is worn, the hook portion 11 cooperates with the connecting portion 12 to enable the holding portion 13 to be hung on the front side of the ear of the user, the extension portion 17 can extend into the cymba and/or the triangular fossa of the ear to prevent the holding portion 13 from turning outwards, thereby improving the stability of the earphone 10 in terms of wearing. The present embodiment is exemplified by the case where the extension portion 17 can be inserted into the cymba concha of the ear.

As shown in fig. 15, point B hooks the depression at the rear side of the ear, and point C serves as a fulcrum, so that the hook 11 can overcome the self weight of the holding part 13, thereby preventing the holding part 13 from falling off the ear of the user. At this time, the frictional force between the hook 11 and the ear may also be increased to improve the stability of the earphone 10 in terms of wearing. Further, point H hooks the helix of the ear, and point G serves as another fulcrum, so that the extension 17 can overcome the self-weight of the holding portion 13, thereby preventing the holding portion 13 from turning out of the user's ear. At this time, the frictional force between the extension 17 and the ear may also be increased to improve the stability of the earphone 10 in terms of wearing.

Based on the above-described related description, the headset 10 can be held on the ear in a wearing state. Wherein the headset 10 may resiliently grip the ear for increased wearing stability and comfort.

As an example, in conjunction with fig. 16, the hook 11 may include an elastic part 112 connected with the connection part 12 and a battery part 113 at a free end of the hook 11. The battery portion 113 is used for disposing at least the battery 16 of the earphone 10, and the battery 16 may be disposed in a column shape. To facilitate the installation of structural components such as the battery 16, the battery portion 113 may be made of a relatively rigid material, such as a hard plastic; of course, in order to achieve comfortable wearing, the battery section 113 may be provided with an elastic coating layer or may be coated with an elastic paint or the like at least in a region that contacts the skin of the user. Further, the elastic portion 112 may have a certain elastic deformation capability compared to the battery portion 113, so that the hook portion 11 can be deformed under an external force, and further generate a displacement compared to the retaining portion 13, so as to allow the hook portion 11 and the retaining portion 13 to cooperate to elastically clamp the ear portion. Thus, during wearing the earphone 10, the user can first apply a slight force to bias the hook portion 11 away from the holding portion 13 so that the ear portion extends between the holding portion 13 and the hook portion 11; after the wearing position is proper, the hands are loosened 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 condition.

The ratio between the length of the elastic portion 112 and the length of the hook portion 11 may be greater than or equal to 48%, preferably the aforementioned ratio may be greater than or equal to 60%; the radial dimension of the elastic portion 112 in any direction in the cross section may be less than or equal to 5mm, and preferably the aforementioned radial dimension may be less than or equal to 4mm. As such, the elastic portion 112 may be configured to be a slender structure, so that the elastic portion 112 has more excellent elastic deformation capability, and thus the earphone 10 can better elastically clamp the ear. In addition, the cross-sectional area of the elastic part 112 is as small as possible, so that a corresponding wearing space can be reserved for myopia glasses and hypermetropia glasses, or intelligent glasses such as AR, VR and MR glasses, and other wearing requirements of a user can be met. Further, since the hook 11 is mainly hung between the head and the ear of the user, the cross section of the elastic portion 112 may be circular or elliptical, so that at least the elastic portion 112 can better contact with the ear and/or the head, and can be as close to the boundary line between the ear and the head as possible, thereby increasing the wearing stability.

The cross-sectional area of at least a partial region of the battery part 113 may be larger than the maximum cross-sectional area of the elastic part 112, so that the battery part 113 can be provided with a larger capacity of the battery 16 to increase the cruising ability of the earphone 10. In some embodiments, the battery portion 113 may be cylindrically disposed, and the ratio between the length and the outer diameter may be less than or equal to 6.

Based on the above-described related description, with the hook portion 11, since the elastic portion 112 and the battery portion 113 have different purposes, there may be a large difference in cross-sectional area therebetween. For this reason, the hook portion 11 may further include a transition portion 114 between the elastic portion 112 and the battery portion 113, and a cross-sectional area of the transition portion 114 is between a cross-sectional area of the elastic portion 112 and a cross-sectional area of the battery portion 113 and gradually increases in a direction from the elastic portion 112 to the battery portion 113. In this way, it is possible not only to increase the symmetry of the hook 11 in appearance, but also to make the hook 11 better in contact with the ear and/or the head. Further, since the rear side of the ear generally presents a plurality of elevations, for example a cymba elevation corresponding to the cymba concha and a cavum concha elevation corresponding to the cavum concha, and the cymba concha elevation is generally closer to the earlobe than the cymba emiae elevation, the transition portion 114 may be provided with a contoured depression corresponding to the contour of the rear side of the ear on the side facing the ear, thereby facilitating the hook portion 11 to come into operative contact with the rear side of the ear, for example the aforementioned contoured depression coming into contact with the cymba concha bulge. In short, the bulge on the rear side of the ear can be avoided by the profiling recess, so that the bulge on the rear side of the ear can be prevented from jacking up the hook-shaped part 11, and the hook-shaped part 11 can be better contacted with the ear. In some embodiments, for the transition portion 114, in a reference cross section along the central axis of the battery portion 113, the curvature radius of the aforementioned contour depression may be smaller than that of the other side of the transition portion 114 facing away from the ear, i.e., the curvature of the contour depression may be greater, so that the hook portion 11 can accommodate various bulges and depressions on the rear side of the ear, while the other regions of the transition portion 114 mainly make the space between the elastic portion 112 and the battery portion 113 smooth as quickly as possible, thereby increasing the uniformity of the hook portion 11 in appearance.

As is well known in the medical, anatomical and other fields, three fundamental planes of the Sagittal Plane (Sagittal Plane), coronal Plane (Coronal Plane) and Horizontal Plane (Sagittal Plane) and three fundamental axes of the Sagittal Axis (Sagittal Axis), coronal Axis (Coronal Axis) and Vertical Axis (Vertical Axis) of a human body can be defined. Wherein, the sagittal plane is a section perpendicular to the ground and made along the front and back direction of the body, which divides the human body into a left part and a right part; the coronal plane is a section perpendicular to the ground along the left and right directions of the body, and divides the human body into a front part and a rear part; the horizontal plane is a section parallel to the ground along the up-down direction of the body, and divides the body into an upper part and a lower part. Accordingly, the sagittal axis means an axis passing perpendicularly through the coronal plane in the anteroposterior direction of the body, the coronal axis means an axis passing perpendicularly through the sagittal plane in the left-right direction of the body, and the vertical axis means an axis passing perpendicularly through the horizontal plane in the up-down direction of the body.

Based on the above description, the weight of the headset 10 and its distribution may affect the stability of the wearer to some extent. As for the hook 11, the weight thereof may be mainly concentrated on the battery part 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 may be less than or equal to 4. With reference to fig. 17, in the worn state, and as viewed from the side of the holding portion 13 away from the ear, the battery portion 113 may be at least partially located on the side of the first reference surface (denoted as RP 1) facing directly in front of the user, which passes through the contact point (denoted as CP 0) of the holding portion 13 with the ear and is parallel to the coronal plane. In this way, it is advantageous to reduce the moment of the center of gravity of the battery part 113 with respect to, for example, the upper ear root, so as to avoid the battery part 113 from being turned over due to an excessive self-weight and/or an excessive moment in the worn state, thereby increasing the wearing stability. Further, the battery portion 113 may also intersect a second reference plane (designated as RP 2) which passes through the first location point (designated as CP 1) of the flexible portion 112 closest to the top of the user's head along the vertical axis and is parallel to the coronal plane. Further, the inner edges of the hook portion 11 and the connecting portion 12 toward the ear portion have a second position point (designated CP 2) farthest from the contact point of the holding portion 13 and the ear portion, and the battery portion 113 may further intersect a third reference plane (designated RP 3) which is parallel to the coronal plane at the second position point. Wherein the second position point may fall on the connecting portion 12, or may fall at a boundary line between the hook portion 11 and the connecting portion 12, which will be exemplarily described later. In this way, the center of gravity of the battery unit 113 and the center of gravity of the holding unit 13 are located on the same side of the first reference surface, which is advantageous for enhancing the wearing stability.

For convenience of description, and in conjunction with fig. 16, the holding part 13 may have a thickness direction, a length direction, and a height direction orthogonal to each other, and may be sequentially labeled as "X", "Y", and "Z", respectively. The thickness direction is defined as a direction in which the holding portion 13 is close to or away from the ear in the worn state, the length direction is defined as a direction in which the holding portion 13 is close to or away from the front of the user in the worn state, and the height direction is defined as a direction in which the holding portion 13 is close to or away from the top of the head of the user in the worn state. 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.

In some embodiments, such as fig. 16 to 18, an orthographic projection of a section of the hook portion 11 close to the connecting portion 12 on a reference plane (such as a plane on which YZ is located) perpendicular to the above thickness direction and an orthographic projection of the holding portion 13 on the above reference plane may partially coincide. The section of the hook portion 11 close to the connecting portion 12 may be an elastic portion 112 having a larger elastic deformability than the battery portion 113, or may be a hard structure located between the battery portion 113 and the connecting portion 12 and having a small elastic deformability than the battery portion 113. As such, not only the holding portion 13 and the hook portion 11 can elastically clamp the ear portion from the front side of the ear portion and the rear side of the ear portion, but also the clamping force is mainly expressed as compressive stress, thereby increasing the wearing stability and comfort. Besides, the center of gravity of the battery part 113 is close to the face of the user, so that the wearing stability is improved. Of course, in other embodiments, such as the earphones shown in fig. 4 and 5, and further such as the earphones shown in fig. 9 and 10, an orthogonal projection of the hook portion 11 on a reference plane perpendicular to the thickness direction and an orthogonal projection of the holding portion 13 on the reference plane may be offset from each other.

As an example, and with reference to fig. 16 and 17, an orthogonal projection of the elastic portion 112 on the reference plane and an orthogonal projection of the holding portion 13 on the reference plane may partially overlap, and an orthogonal projection of the battery portion 113 on the reference plane and an orthogonal projection of the holding portion 13 on the reference plane may be offset from each other. Thus, the holding portion 13 and the hook portion 11 are facilitated to elastically hold the ear portion in both front and rear directions.

Further, the radius of curvature of the edge of the elastic portion 112 and the transition portion 114 on the side of the orthographic projection on the above-mentioned reference plane toward the ear may gradually increase first and then gradually decrease in the direction from the connecting portion 12 to the hook portion 11 away from the battery portion 113. Wherein, the curvature radius of the edge is gradually increased to enable the hook-shaped part 11 to be better adapted to the contour shape of the back side of the ear; the gradual decrease can make the bending degree of the hook part 11 near one end of the battery part 113 become larger, and further make the battery part 113 approach towards the holding part 13, which is beneficial for the hook part 11 to hook the back side of the ear to increase the wearing stability. Further, the curvature radius of the edge may gradually increase and then gradually decrease in a continuously changing manner, may gradually increase and then gradually decrease in a stepwise changing manner, or may be a combination of the two manners. For example: the edge includes a plurality of sections, each section has a curvature radius, and the curvature radius of the plurality of sections may gradually increase and then gradually decrease in a direction from the connecting portion 12 to the battery portion 113, which may also be referred to as a step change. In order to increase wearing stability, a section having the largest radius of curvature among the plurality of sections may overlap with an orthographic projection of the holding portion 13 on the reference plane.

As an example, the edge of the elastic portion 112 and the transition portion 114 on the side of the orthographic projection on the reference plane toward the ear portion may have a first section (denoted as 11A), a starting point (denoted as CP 3) of the first section is a connection point between the elastic portion 112 and the connection portion 12, and an end point (for example, CP 1) is a highest point of the elastic portion in the height direction in the wearing state. Wherein the radius of curvature of the first section may be between 8mm and 10 mm. The starting point of the first section may coincide with the second location point, or may be farther away from the connection portion 12 than the second location point, as will be exemplarily described later. Further, the edge of the elastic portion 112 and the transition portion 114 may further have a second section (denoted as 11B), 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 CP 4) and the highest point in the length direction may be between 8mm and 11mm, and the distance between the end point and the highest point in the height direction may be between 7mm and 10 mm. Wherein the radius of curvature of the second section may be between 9mm and 12 mm. Further, the edges of the elastic portion 112 and the transition portion 114 may further have a third section (denoted as 11C), the starting point of the third section is the end point of the second section, the distance between the end point of the third section (denoted as CP 5) and the highest point in the length direction may be between 9mm and 12mm, and the distance between the end point and the highest point in the height direction may be between 19mm and 21 mm. Wherein the radius of curvature of the third section may be between 29mm and 36 mm. Further, the edge of the elastic portion 112 and the transition portion 114 may further have a fourth section (denoted as 11D), a starting point of the fourth section is an end point of the third section, a distance between the end point of the fourth section (denoted as CP 6) and the highest point in the length direction may be between 7mm and 10mm, and a distance between the end point and the highest point in the height direction may be between 25mm and 32 mm. Wherein the radius of curvature of the fourth section may be between 19mm and 25 mm. Further, the edge of the elastic portion 112 and the transition portion 114 may further have a fifth section (denoted as 11E), the starting point of the fifth section is the end point of the fourth section, the distance between the end point of the fifth section (denoted as CP 7) and the highest point in the length direction may be less than or equal to 2mm, and the distance between the end point and the highest point in the height direction may be between 30mm and 38 mm. Wherein the radius of curvature of the fifth section may be between 9mm and 13 mm. In this case, the fifth section may be provided with the profile recess, and the radius of curvature of the profile recess may be smaller than the radius of curvature of the fourth section.

It should be noted that: the end point of the second section, i.e. the start point of the third section, may be an intersection point between the orthographic projection of the elastic portion 112 on the reference plane and the upper edge of the holding portion 13; similarly, the end point of the third section, which is the start point of the fourth section, may be another intersection point between the orthographic projection of the elastic portion 112 on the above-mentioned reference plane and the lower edge of the holding portion 13. At this time, the orthographic projection of the third section on the above-mentioned reference plane may fall entirely on the holding portion 13. Further, and in conjunction with fig. 28, the boundary between the flexible portion 112 and the transition portion 114 may be located at the fourth section. Accordingly, a starting point of a section of the hook portion 11 close to the connecting portion 12 may be a boundary line between the hook portion 11 and the connecting portion 12, and an end point may be another intersection point between an orthographic projection of the elastic portion 112 on the above-mentioned reference plane and the lower edge of the holding portion 13.

Referring to fig. 19, the hook 11 may include an elastic wire 115, a battery compartment 1161, and a lead 117, one end of the elastic wire 115 is connected to the connection part 12, and the other end is connected to the battery compartment 1161, and the lead 117 may extend from the battery compartment 1161 to the connection part 12 and the holding part 13 along with the elastic wire 115. The elastic metal wire 115 makes the hook portion 11 have a certain elastic deformation capability, the battery chamber 1161 is at least used for arranging the battery 16, and the lead 117 is at least used for achieving electrical connection between the battery chamber 1161 and electronic components in the holding portion 13. Further, the hook portion 11 may further include an elastic coating 118, such as silicone, and the elastic coating 118 at least covers the elastic wire 115 and the wire 117 to increase the appearance quality and wearing comfort. The cross-sectional area of the battery compartment 1161 may be greater than the sum of the cross-sectional areas of the elastic part 112 formed by the elastic wire 115 and the elastic coating 118, and preferably may also be greater than the sum of the cross-sectional areas of the elastic wire 115, the wire 117, and the elastic coating 118.

Further, the hook 11 may further include a transition piece 1162 connected with the elastic wire 115, so that the elastic wire 115 is connected with the battery chamber 1161 through the transition piece 1162. For example: the transition piece 1162 and the elastic metal wire 115 are formed through a metal insert injection molding process, the battery compartment 1161 is arranged to be a cylindrical structure with one end open so as to place structural members such as the battery 16, and the transition piece 1162 is buckled with the open end of the battery compartment 1161. Of course, in other embodiments, the transition piece 1162 and the battery compartment 1161 may be integrally formed, and the end of the battery compartment 1161 away from the transition piece 1162 may be provided with an opening and may be sealed by a cover plate. Wherein the cross-sectional area of the transition piece 1162 may gradually increase along the length of the hook 11 and in a direction away from the connection 12. Accordingly, the elastic cladding 118 may also clad the transition piece 1162. Wherein the contoured depression may be formed in the transition piece 1162 and emerge through the resilient cladding 118. In other words, transition piece 1162 can be provided with a contoured recess on a side facing the ear that corresponds to the contour of the rear side of the ear, and the radius of curvature of the contoured recess can be smaller in a reference cross-section taken along a central axis of battery compartment 1161 than on the other side of transition piece 1162 that faces away from the ear, i.e., the contoured recess can be curved to a greater extent so that transition portion 114 avoids bulging at the rear side of the ear.

Based on the above description, in conjunction with fig. 28, for the hook portion 11, the elastic portion 112 may correspond to the portion of the elastic wire 115 exposed from the connecting portion 12 and the transition piece 1162, and may mainly include the elastic covering body 118, the elastic wire 115 covered by the elastic covering body, and the conducting wire 117; battery portion 113 may correspond to a portion of battery compartment 1161, and may primarily include battery compartment 1161 and batteries 16 therein; the transition 114 may correspond to a portion of the transition piece 1162 and may primarily include the resilient cladding 118 and the transition piece 1162 over which it is clad. In other words, the length of the resilient portion 112 may be the length of the portion of the resilient wire 115 exposed from the connecting portion 12 and the transition piece 1162 and covered by the resilient cladding 118.

Further, the earphone 10 may further include a processing circuit and a detecting element 1163 coupled to the processing circuit, the detecting element 1163 is configured to detect whether the hook 11 is hooked between the back side of the ear and the head, and the processing circuit is configured to determine whether the earphone 10 is in a wearing state according to a detection result of the detecting element 1163. Wherein the processing circuit can be integrated on the main board 15, and the detecting element 1163 can be any one or combination of a capacitor, an inductor and a resistance sensing element disposed on the side of the hook 11 (such as the transition piece 1162 or the battery chamber 1161) facing the ear. Illustratively, the detector 1163 may be a capacitive sensing element and may be disposed at a contoured recess of the transition piece 1162.

In some application scenarios, when the detecting part 1163 detects that the earphone 10 is in the wearing state, the processing circuit generates a first control signal for controlling the earphone 10 to switch to the playing state; when the detecting part 1163 does not detect that the earphone 10 is in the wearing state, the processing circuit generates a second control signal for controlling the earphone 10 to switch to the suspension state. In this way, power for the headset 10 may be saved and interactivity of the headset 10 may be increased.

In other application scenarios, the headset 10 may include a first headset and a second headset that are paired and communicatively coupled, for example, the first headset and the second headset are respectively worn on the left ear and the right ear of the user, and both of them are provided with the detecting parts 1163. Wherein, the processing circuit judges and selects one of the first earphone and the second earphone as the main earphone in communication connection with the audio source device (such as a mobile phone, a tablet electric energy and a smart watch) according to the detection result of the detecting piece 1163 in the first earphone and the second earphone. In this way, when the user uses two earphones at the same time, one of the earphones can be selected as a master earphone to be in communication connection with the audio source device according to a set rule, and the other earphone can be selected as a slave earphone to be in communication connection with the master earphone; and when the user uses only one of the two earphones, the earphone used serves as the primary earphone.

With reference to fig. 16 and 18, the side of the holding portion 13 facing the ear may include a first area 13A and a second area 13B, and the second area 13B may be farther away from the connecting portion 12 than the first area 13A, that is, the second area 13B may be located at the free end of the holding portion 13 away from the connecting portion 12. Based on the above-described related description, a section of the hook portion 11 near the connecting portion 12, such as the elastic portion 112, may partially overlap the second region 13B in an orthographic projection in the above thickness direction. Further, the first region 13A is provided with a sound outlet hole 1311, and the second region 13B may be projected toward the ear compared to the first region 13A and adapted to be in contact with the ear to allow the sound outlet hole 1311 to be spaced from the ear in a wearing state. In short, the holding portion 13 may be provided at its free end in a convex hull structure. In this way, since the movement 14 can generate sound transmitted to the ear through the sound outlet 1311, the convex hull structure can prevent the sound generated by the movement 14 from being weakened or even being unable to be output due to the ear blocking the sound outlet 1311. Illustratively, in the above thickness direction, the maximum protrusion height of the second region 13B with respect to the first region 13A may be greater than or equal to 1mm, and a smooth transition may be made between the two regions. It should be noted that: if only for the purpose of spacing the sound outlet 1311 from the ear in the fitted state, the second region 13B projecting toward the ear compared to the first region 13A may also be another region of the holder 13, for example, the region between the sound outlet 1311 and the connecting portion 12. Further, since the concha cavity and the concha boat have a certain depth and communicate with the ear hole, the orthographic projection of the sound outlet 1311 on the ear in the above thickness direction may at least partially fall within the concha cavity and/or the concha boat. As an example, the holding portion 13 may be located on a side of the ear hole near the top of the user's head, and in contact with the antihelix; the orthographic projection of the sound outlet 1311 onto the ear in the above-mentioned thickness direction may then fall at least partly inside the cymba concha.

Further, with reference to fig. 16 and 33, the holding portion 13 may form a front cavity 200 and a rear cavity 300 of the earphone 10 on opposite sides of the movement 14, respectively, and the sound outlet 1311 communicates with the front cavity 200 and outputs sound to the ear. The holder 13 may be provided with a pressure relief hole 1312 communicating with the rear chamber 300, and the pressure relief hole 1312 may be located farther from the ear hole than the sound hole 1311. As such, the pressure relief hole 1312 allows air to freely enter and exit the rear chamber 300, so that a change in air pressure in the front chamber 200 can be prevented as much as possible by the rear chamber 300, thereby improving the quality of sound output to the ear through the sound outlet hole 1311. Furthermore, since the sound outputted to the outside of the earphone 10 through the sound outlet 1311 and the pressure relief hole 1312 has opposite phases, the sound is cancelled out in opposite phases in the far field away from the ear, that is, an "acoustic dipole" is formed to reduce the leakage sound. An included angle between a connecting line between the center of the pressure relief hole 1312 and the center of the sound outlet hole 1313 and the thickness direction may be between 0 ° and 50 °; preferably, the aforesaid angle may be between 0 ° and 40 °. Further, the holding portion 13 may be further provided with a sound tuning hole 1313 communicating with the rear cavity 300, and the sound tuning hole 1313 may be used to break a high pressure region of a sound field in the rear cavity 300, so that a wavelength of standing waves in the rear cavity 300 is shortened, and thus a resonance frequency of sound output to the outside of the earphone 10 through the pressure relief hole 1312 is made as high as possible, for example, greater than 4kHz, to reduce leakage sound. Sound tuning hole 1313 and pressure relief hole 1312 may be located on opposite sides of movement 14, for example, at opposite sides in the height direction, in order to maximize the destruction of the high pressure region of the sound field in rear chamber 300. The opening direction of the pressure relief hole 1312 may face the top of the head of the user, for example, an included angle between the opening direction and the vertical axis is between 0 ° and 10 °, so as to allow the pressure relief hole 1312 to be farther away from the ear hole than the sound adjusting hole 1313, and further make it difficult for the user to hear the sound output to the outside of the earphone 10 through the pressure relief hole 1312, so as to reduce the sound leakage. Accordingly, the pressure relief hole 1312 may have a first center in the length direction, the sound adjustment hole 1313 may have a second center in the length direction, and the second center may be farther from the center of the sound outlet hole 1311 than the first center in the length direction, so as to increase the distance between the sound adjustment hole 1313 and the sound outlet hole 1311 as much as possible, thereby reducing phase-reversal cancellation between the sound output to the outside of the earphone 10 through the sound adjustment hole 1313 and the sound transmitted to the ear through the sound outlet hole 1311. In other words, the orthographic projection of the sound adjusting hole 1313 in the height direction and the orthographic projection of the second region 13B in the thickness direction may at least partially intersect so as to be as far away from the sound outlet hole 1311 as possible.

In short, when the user wears the earphone 10, the user mainly listens to the sound transmitted to the ear hole through the sound outlet hole 1311, and the other sound holes such as the pressure release hole 1312 and the sound adjustment hole 1313 are mainly used to make the sound with the sound quality of bass diving and high penetrating sound as much as possible. Therefore, the ratio of the dimension of the outlet end of the pressure relief hole 1312 in the length direction (for example, L1 in fig. 18) to the dimension of the end of the rear cavity 300 close to the pressure relief hole 1312 in the length direction (for example, L2 in fig. 31) may be greater than or equal to 0.9, and the dimensional relationship between the outlet end and the rear cavity 300 in the thickness direction may be the same or similar, so that the rear cavity 300 is communicated with the outside of the earphone 10 as large as possible, the blocking of the rear cavity 300 with respect to the front cavity 200 is reduced to the maximum extent, and the resonant frequency of the sound output to the outside of the earphone 10 through the pressure relief hole 1312 may be shifted to a high frequency as possible.

It should be noted that: because the structural members such as the movement housing 131 have a certain thickness, the holes such as the sound outlet hole 1311, the pressure relief hole 1312 and the sound adjusting hole 1312 formed in the movement housing 131 have a certain depth, and further, for the accommodating cavity formed by the movement housing 131, the holes described in the present application have an inlet end close to the accommodating cavity and an outlet end far from the accommodating cavity. The partition 137 and the communication holes formed therein are similar to those mentioned later, and will not be described again.

Referring to fig. 16 to 18, in a natural state, and as viewed from the headset 10 in a wearing state toward the top of the head of the user, for example, as viewed in the height direction, the holding portion 13 and at least a section of the hook portion 11 near the connecting portion 12 are spaced in the thickness direction, and the connecting portion 12 may be disposed in an arc shape and connected between the holding portion 13 and the hook portion 11. In this way, the connecting portion 12 can keep the holding portion 13 located at the front side of the ear and the hook portion 11 located at the rear side of the ear spaced from each other at least at a section near the connecting portion 12 in the thickness direction, so that the earphone 10 can bypass the upper base of the ear and the tissue near the upper base of the ear in a wearing state, and further, the earphone 10 can be prevented from excessively clamping the helix near the upper base of the ear to cause discomfort.

As an example, the connecting portion 12 and the holding portion 13 may be connected in the above-described length direction. Wherein at least a part of the connecting portion 12 may extend in a direction from one end of the connection holding portion 13 to the other end of the connection hooked portion 11 away from the free end of the holding portion 13 in both the above-mentioned length direction and the above-mentioned height direction so as to be convex forward toward the user's face side as a whole, so that a difference in height between the hooked portion 11 and the holding portion 13 in the above-mentioned height direction can be eliminated in a smooth transition manner. Of course, at least part of the connecting portion 12 may also extend away from the free end of the holding portion 13 in the above-described longitudinal direction in a direction from one end of the connecting holding portion 13 to the other end of the connecting hook portion 11. Furthermore, the connecting portion 12 itself or a section thereof close to the connecting portion 12 together with the hook portion 11 may extend in the thickness direction away from the free end of the holding portion 13, so that the holding portion 13 and the section of the hook portion 11 close to the connecting portion 12 are provided at an interval in the thickness direction. In some embodiments, referring to fig. 23 and 24, the connecting portion 12 may further extend from one end of the connecting and holding portion 13 to the other end of the connecting and hooking portion 11 in the longitudinal direction to the free end of the holding portion 13 and in the height direction to the free end of the holding portion 13, that is, the connecting portion 12 itself forms a structure extending in a three-dimensional space in a winding manner. In other embodiments, referring to fig. 28 and 29, the connecting portion 12 may extend from one end of the connecting and holding portion 13 to the other end of the connecting hook portion 11 only along the length direction and the height direction away from the free end of the holding portion 13, i.e. forming the first half of the circuitous extending structure, and the section of the hook portion 11 close to the connecting portion 12 (e.g. the elastic portion 112) may continue to extend from the connecting portion 12 along the length direction toward the free end of the holding portion 13 and simultaneously extend along the height direction away from the free end of the holding portion 13, i.e. forming the second half of the circuitous extending structure, which cooperate to form the circuitous extending structure in the three-dimensional space. Of course, in other embodiments, the circuitous extending structure may have only a front half or a back half.

In some embodiments, the section of the hook portion 11 adjacent to the connecting portion 12 (e.g., the elastic portion 112), the connecting portion 12, and the edge of the holding portion 13 on the side facing the ear may be arranged in an arc shape extending in a circuitous manner. Wherein, in a reference direction passing through a inflection point (e.g., CP 2) of the arc and parallel to the longitudinal direction, a minimum width W1 of the arc in the thickness direction at a position 3mm from the inflection point may be between 1mm and 5mm.

In other embodiments, in the thickness direction, the minimum distance between the section of the hook portion 11 close to the connecting portion 12, for example, the elastic portion 112, and the holding portion 13 may be greater than 0 and less than or equal to 5mm.

In other embodiments, the distance W2 between the center of the sound outlet 1311 (denoted as O0) and the section of the hook 11 near the connecting portion 12 (e.g., the elastic portion 112) may be between 3mm and 6mm in the thickness direction.

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 connection portion 12 (e.g., the elastic portion 112) may be between 1mm and 5mm.

With reference to fig. 20 and 18, the holding portion 13 may include a movement housing 131 connected to the connecting portion 12, and all the components such as the movement 14 and the main board 15 may be fixed in the accommodating space of the movement housing 131. As an example, movement housing 131 may include first housing 1314 and second housing 1315 disposed opposite in the above-described thickness direction, first housing 1314 being closer to the ear than second housing 1315. Of course, first housing 1314 and second housing 1315 may be disposed opposite to each other in the direction of vibration of movement 14, which may be parallel to the thickness direction. Specifically, the movement 14 may be fixed to a side of the first housing 1314 facing the second housing 1315 to enclose the front chamber 200, and the second housing 1315 may be engaged with the first housing 1314 and enclose the movement 14 to form the rear chamber 300. Accordingly, the sound outlet 1311 may be provided in the first housing 1314, e.g., on the side facing the ear; the pressure relief hole 1312 and the sound adjustment hole 1313 may be provided on opposite sides of the second casing 1315, for example, opposite to each other in the height direction. Based on the above-described related description, the ratio between the dimension of the outlet end of the pressure relief hole 1312 in the above-described longitudinal direction and the dimension of the second casing 1315 in the above-described longitudinal direction may be greater than or equal to 0.55; preferably, the aforementioned ratio is between 0.8 and 1, so as to allow the rear cavity 300 to communicate with the outside of the earphone 10 over as large an area as possible, while taking into account the structural strength of the second housing 1315.

In some embodiments, in conjunction with fig. 20, connecting portion 12 may include a third housing 122 connected to an end of resilient wire 115 remote from battery compartment 1161, e.g., both formed by a metal insert molding process. The dimensions of the second casing 1315 and the third casing 122 in the longitudinal direction are smaller than those of the first casing 1314, and the dimensions of the second casing 1315 may be much larger than those of the third casing 122. In this way, the second housing 1315 is fastened to the first housing 1314, and the orthographic projection of the second housing 1315 in the thickness direction is partially overlapped with the first housing 1314, and the third housing 122 is fastened to the portion of the first housing 1314 located at the periphery of the orthographic projection of the second housing 1315. In short, the third housing 122 can be engaged with the second housing 1315 on the same side as the first housing 1314, and a large portion of the first housing 1314 serves as a housing for the holding portion 13 and a small portion serves as a housing for the connecting portion 12. In a specific embodiment, the ratio of the maximum dimension of the third casing 122 in the longitudinal direction to the dimension of the second casing 1315 in the longitudinal direction may be less than or equal to 0.4.

Based on the above description, in conjunction with fig. 23 and 24, in a natural state, and as viewed from the top of the head of the user in a wearing state of the earphone 10, for example, as viewed along the height direction, the first case 1314 and the elastic wire 115 are arranged at a distance in the thickness direction, and the third case 122 may be arranged in an arc shape and connect the first case 1314 and the elastic wire 115 to allow the holding portion 13 at the front side of the ear and the hook portion 11 at the rear side of the ear to be spaced from each other in the thickness direction at least at a section near the connecting portion 12. Further, the third housing 122 may extend in the direction from the end connected to the first housing 1314 to the other end connected to the elastic wire 115, away from the second housing 1315 in the longitudinal direction and the height direction at the same time, and then extend in the direction close to the second housing 1315 in the longitudinal direction and away from the second housing 1315 in the height direction, so as to allow the difference in height between the hook 11 and the holding portion 13 in the height direction to be eliminated in a smooth transition manner. In this case, the second position point may be located on the connecting portion 12, and the starting point of the first section may be farther from the connecting portion 12 than the second position point. The portion of the first housing 1314 doubling as the housing of the connecting portion 12 may have the same or similar trend with the third housing 122. In this way, the connection portion 12 itself can form a structure extending in a meandering manner in a three-dimensional space. As such, referring to fig. 24, a parting line (referred to as PL 1) is formed between the third housing 122 and the first housing 1314, and the two housings are separately molded and then fastened together, so as to improve the problem that the housing of the connecting portion 12 is difficult to be removed from the mold due to the winding structure in the three-dimensional space, thereby increasing the production efficiency and reducing the production cost.

In some embodiments, referring to fig. 27, third housing 122 is integrally formed with first housing 1314 and is formed with a patch jack. Furthermore, the connecting portion 12 may further include a connector 123, one end of the connector 123 may be connected to the hook portion 11, and the other end of the connector 123 may be inserted and fixed in the insertion hole, so as to achieve the connection between the hook portion 11 and the connecting portion 12. Specifically, one end of the connector 123 remote from the third housing 122 may be connected to the other end of the elastic wire 115 remote from the battery chamber 1161, for example, they are formed by a metal insert molding process. Further, the connecting portion 12 may further include a locking member 124, and a portion of the connector 123 inserted into the third housing 122 may be locked with the third housing 122 by the locking member 124, which is not only convenient for assembly, but also increases the reliability of assembly. The locking member 1224 may be a wedge having a cylindrical or plate-like shape.

Based on the above description, and with reference to fig. 28 and 29, the third housing 122 may extend away from the second housing 1315 along the length direction and the height direction in a direction from the end connected to the first housing 1314 to the other end connected to the connector 123, and the section of the elastic wire 115 exposed out of the connector 123 and close to the connector 123 may further extend toward the second housing 1315 along the length direction and away from the second housing 1315 along the height direction in a direction away from the connector 123. Correspondingly, the third housing 122 may also extend away from the second housing 1315 along the thickness direction, and the section of the elastic wire 115 exposed out of the connector 123 and close to the connector 123 may continue to extend away from the second housing 1315 along the thickness direction. At this time, the second position point may be located at a boundary between the hook 11 and the connection 12, and the starting point of the first section may coincide with the second position point. The portion of the first housing 1314 doubling as the housing of the connecting portion 12 and the portion of the connector 123 exposed from the third housing 122 may have the same or similar trend with the third housing 122. In this way, the connecting portion 12 is allowed to form only the front half of the circuitous extending structure, and the hook portion 11 continues to form the rear half of the circuitous extending structure, so as to allow the two to cooperate to form the circuitous extending structure in the three-dimensional space. As such, referring to fig. 28, a parting line (referred to as PL 2) is formed between the connector 123 and the third and

first housings

122 and 1314, and the two are separately formed and then inserted into each other, so as to improve the problem that the housing of the connecting portion 12 is difficult to be removed from the mold due to the structure extending in a winding manner in a three-dimensional space, thereby increasing the production efficiency and reducing the production cost.

It should be noted that: the housings of the connecting portion 12 and the holding portion 13 may be divided into two housings having substantially equal orthographic projection areas along the thickness direction, the housing of the connecting portion 12 may be divided into two or only one along the inflection point, the other one is also used as the elastic wire 115, and the housings are assembled together.

Based on the above-mentioned description, in conjunction with fig. 20 and 18, since the holding portion 13 needs to be in contact with the front side of the ear, especially the free end of the holding portion 13 needs to form a contact point (e.g., CP 0) with, for example, the antihelix of the ear. In this regard, the side of the movement housing 131 facing the ear may be provided with the flexible coating structure 132 and at least escape from the sound outlet 1311, for example, the flexible coating structure 132 is provided with a through hole corresponding to the sound outlet 1311. The shore hardness of the flexible covering structure 132 is smaller than that of the movement housing 131, so that the holding portion 13 is in contact with the ear through the flexible covering structure 132, that is, the flexible covering structure 132 is elastically supported between the movement housing 131 and the ear, thereby improving the wearing comfort. Further, based on the dividing and splicing manner of the housings of the connecting portion 12 and the holding portion 13, in order to increase the appearance quality of the earphone 10, the flexible covering structure 132 may be directly attached to the first housing 1314 and the third housing 122 by injection molding, or may be covered by gluing. Because the hook-shaped part 11 can also be provided with the elastic coating body 118, the elastic coating body 118 and the flexible coating structure 132 can be formed by one-time injection molding process, and can also be formed by two-time injection molding process respectively; the materials of the two can be the same or different. Based on this, without being particularly described, the present application mainly looks at the portion of the flexible covering structure 132 and the elastic covering body 118 that is in contact with the skin of the user.

In some embodiments, the flexible covering structure 132 may be at least partially disposed on a side of the holding portion 13 away from the free end of the connecting portion 12 and toward the ear, that is, the second region 13B. Accordingly, an orthographic projection of the elastic portion 112 on the reference plane (e.g., a plane of YZ) and an orthographic projection of the flexible wrapping structure 132 on the reference plane may partially coincide. Further, the thickness of the flexible covering structure 132 can be designed differently, for example, the flexible covering structure 132 corresponding to the second region 13B is relatively thicker, so that the free end of the holding portion 13 can protrude toward the ear portion, and has good flexibility. Of course, if only the second region 13B is projected toward the ear compared to the first region 13A, the first case 1314 may be designed with a difference in thickness toward the ear. Based on this, the first case 1314 may also include first and second regions to correspond one-to-one with the first and

second regions

13A and 13B, respectively, of the holding portion 13 on the side toward the ear portion.

Further, one surface of the flexible covering structure 132 facing the movement housing 131 may be recessed with at least one blind hole 1321 spaced from each other, and the blind hole 1321 may be mainly used for providing a deformation space for the flexible covering structure 132, so as to allow the flexible covering structure 132 to be subjected to more deformation under pressure in a wearing state, thereby further improving the wearing comfort. In some embodiments, the number of the blind holes 1321 may be plural, for example, at least two, and they may be spaced apart from each other to form a bone position to support the self structure, so as to combine the elastic deformation amount and the structural strength. Of course, in other embodiments, the number of the blind holes 1321 may be only one, and in this case, the flexible covering structure 132 can also have both the elastic deformation amount and the structural strength by controlling parameters such as the elastic modulus and the thickness of the flexible covering structure 132, and the size of the blind holes 1321. In order to make the flexible cladding structure 132 have the blind hole 1321, the movement housing 131, specifically, a portion of the first housing 1314 corresponding to the second region 13B, may be provided with a through hole 13141 in one-to-one correspondence and communication with the blind hole 1321, and the through hole 13141 is used for inserting a molding core of the flexible cladding structure 132. At this time, the plurality of through holes 13141 may enable a portion of the first shell 1314 corresponding to the second region 13B to be disposed in a honeycomb or grid shape, so as to compromise the structural strength of the first shell 1314 in the region and the support of the flexible covering structure 132. Further, the outer side of the first housing 1314 may also be provided with protrusions surrounding the through holes 13141 along the honeycomb or grid-like structure, which may be embedded in the flexible cladding structure 132; and/or, the flexible cladding structure 132 is partially embedded in the through hole 13141 to increase the bonding area of the flexible cladding structure 132 between the second region 13B and the first shell 1314, thereby increasing the bonding strength therebetween. Based on this, the first shell 1314 may be left with the corresponding through hole 13141 during the molding process, and the molding core of the flexible cladding structure 132 may be inserted into the through hole 13141 after the molding process is completed, wherein the molding core may protrude from the first shell 1314, and the maximum protrusion height may depend on the actual requirement of the convex hull structure; the flexible overmold 132 may then be molded directly onto the first housing 1314 via an injection molding process, followed by extraction of the molded core. Accordingly, retaining portion 13 may also include a cover 1316 disposed within cartridge housing 131, such as cover 1316 fixedly disposed on an inner side of first housing 1314 facing away from flexible cladding structure 132 to close throughbore 13141, thereby allowing first housing 1314 and cover 1316 to enclose front chamber 200 with cartridge 14. Wherein the cover 1316 may be supported on the cellular or mesh-like structure of the first housing 1314.

For example, a first flange 13142 may be disposed on an inner wall surface of the first housing 1314 facing away from the flexible cladding structure 132, a second flange 13161 may be disposed on an inner wall surface of the cover 1316 facing away from the flexible cladding structure 132, and two ends of the second flange 13161 and two ends of the first flange 13142 may respectively extend toward each other to form an annular flange. At this point, cartridge 14 may rest on the annular flange, thereby forming front chamber 200. First housing 1314 may have a recess in second region 13B into which blind 1316 may fit to allow an inner wall of blind 1316 to be flush with an inner wall of first housing 1314 that faces away from flexible cladding structure 132, thereby making the inner cavity of anterior chamber 200 as flat as possible. Further, an adhesive dispensing slot may be disposed on an inner wall surface of the first housing 1314 facing away from the flexible covering structure 132, the adhesive dispensing slot may be located at an edge of the aforementioned slot and surrounds the plurality of through holes 13141, and the cover 1316 may be adhered to the first housing 1314 by the adhesive in the adhesive dispensing slot. In short, the first flange 13142 and the glue slot are both disposed on an inner side of the first housing 1314 facing away from the flexible cladding structure 132, but the former may primarily correspond to the first region 13A and the latter may primarily correspond to the second region 13B.

It should be noted that: in other embodiments, such as embodiments in which the flexible cladding structure 132 does not have the blind hole 1321, or in other embodiments, such as embodiments in which the flexible cladding structure 132 is molded separately and then glued to the deck housing 131, for example, the first housing 1314 may not be provided with the through hole 13141, and the corresponding cover 1316 may not be provided. First flange 13142 may be a complete annular flange against which cartridge 14 rests to form front chamber 200.

In other embodiments, and in conjunction with fig. 27, flexible cover structure 132 may include an inner flexible body 1322 disposed on deck housing 131, inner flexible body 1322 may be disposed in second region 13B, and an outer flexible body 1323 covering at least inner flexible body 1322, outer flexible body 1323 may cover inner flexible body 1322, first housing 1314, and third housing 122, among other things. At this point, the flexible cover structure 132 is in contact with the ear through the outer flexible body 1323. In short, the flexible covering 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 132 corresponding to the second region 13B. Accordingly, an orthogonal projection of the elastic portion 112 onto the reference plane (e.g., a plane containing YZ) may partially coincide with an orthogonal projection of the inner flexible body 1322 onto the reference plane. Similarly, sound outlet 1311 may be located between inner flexible body 1322 and connecting portion 12. Further, the inner flexible body 1322 may also protrude toward the ear, i.e., protrude from the movement housing 131 (specifically, the first housing 1314), so that the flexible covering structure 132 forms the convex hull structure.

Illustratively, the blind bore 1321 may be formed in the inner flexible body 1322 in the same or similar manner as described above, and will not be described further herein. The number of the blind holes 1321 may 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. Of course, in other embodiments, the blind hole 1321 may be further disposed through the inner flexible body 1322. Similarly, the gap between the bone sites, i.e., blind hole 1321, is used to provide space for the flexible covering 132 to deform. In one embodiment, the inner flexible body 1322 and the outer flexible body 1323 may be made of 0 degree silica gel.

Illustratively, the shore hardness of inner flexible body 1322 may be less than the shore hardness of outer flexible body 1323 to allow the portion of flexible cladding structure 132 corresponding to second region 13B to be more flexible. A blind hole 1321 may be recessed in a surface of the outer flexible body 1323 facing the movement housing 131, and the inner flexible body 1322 may be disposed in the blind hole 1321 and contact the outer flexible body 1323. In other words, blind bore 1321 may be provided in outer flexible body 1323 to accommodate the more flexible inner flexible body 1322. Specifically, the portion of the first housing 1314 corresponding to the second region 13B may be provided with a through hole 13141, the through hole 13141 being for insertion of a forming core of the externally flexible body 1323. At this time, the outer flexible body 1323 may be formed on the first housing 1314 by an injection molding process, and the molding core is drawn out after the outer flexible body 1323 is molded, so that the outer flexible body 1323 forms a corresponding blind hole 1321, and further forms an accommodation area, and the inner flexible body 1322 may be disposed in the blind hole 1321 through the through hole 13141, that is, disposed in the accommodation area, and then the through hole 13141 may be closed by the cover plate 1316. The side of the cover 1316 facing the inner flexible body 1322 may be partially inserted into the through hole 13141 to increase the sealing of the receiving area. Further, the number of the blind holes 1321 may be one, and the number of the through holes 13141 may also be one. At this time, in the case where the opening area of the through hole 13141 is large, the cover plate 1316 may extend to partially overlap with the first housing 1314 at the first region 13A to increase a supporting area of the first housing 1314 for the cover plate 1316. Wherein the cover 1316 may be provided with a communication hole 13162 communicating the sound outlet hole 1311 with the front chamber 200 to avoid blocking the sound outlet hole 1311. In one embodiment, the outer flexible body 1323 may be made of 30-50 degree silica gel, and the inner flexible body 1322 may be made of 0 degree silica gel, and may be formed in the accommodating area by a glue dropping process. In another embodiment, the material of the outer flexible body 1323 may be 30-50 degrees silica gel, and the material of the inner flexible body 1322 may be 0-10 degrees silica gel, and may be pre-formed into a block shape and filled in the accommodating area. Of course, first housing 1314 may not be provided with through-holes 13141 and corresponding cover 1316 may not be provided in the event that inner flexible body 1322 is able to withstand the impact forces during the molding process of outer flexible body 1323.

Based on the above detailed description, the structural members of the first housing 1314, the outer flexible body 1323, the inner flexible body 1322 and the cover plate 1316 may form a housing assembly, i.e., be modular, to facilitate assembly.

In conjunction with fig. 16, the headset 10 may further include a microphone 125 and a microphone 133 disposed on the holding portion 13 and/or the connecting portion 12, and the two

microphones

125 and 133 may be electrically connected to the main board 15. The distance between the microphone 125 and the microphone 133 in the length direction may be greater than the distance between the microphone 125 and the microphone 133 in the height direction. In this way, the distance between the two

microphones

125 and 133 is as large as possible when the size of the earphone 10 is relatively determined, so that interference between the two

microphones

125 and 133 can be avoided, and the sound pickup effect and/or the noise reduction effect of the earphone 10 can be increased. Further, a line connecting an orthographic projection of the microphone 125 on the reference plane (e.g., a plane on which YZ is located) and an orthographic projection of the microphone 133 on the reference plane may pass through an orthographic projection of the movement 14 on the reference plane. In other words, if the movement 14 is arranged in a rectangular shape on the above-mentioned reference plane, the two

microphones

125, 133 may be arranged substantially along the diagonal of the movement 14.

In some embodiments, the microphone 125 may be disposed at the connection portion 12, and the microphone 133 may be disposed at a free end of the holding portion 13 away from the connection portion 12. At this time, the microphone 125 may be closer to the user's mouth than the microphone 133, so that it is mainly used to pick up the user's voice. The earphone 10 may further include a processing circuit, which may be integrated on the main board 15, and may use the microphone 125 as a main microphone, use the microphone 133 as an 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, so as to increase the sound pickup effect. Of course, at least one of the two

microphones

125 and 133 may be used to perform noise reduction processing on the sound output from the headphone 10 to the ear, or only one microphone may be provided for sound pickup or noise reduction.

As an example, the microphone 125 may be disposed between the third housing 122 and the first housing 1314, and the microphone 133 may be disposed between the second housing 1315 and the first housing 1314. Wherein, the third casing 122 and the second casing 1315 may be respectively provided with through holes for the microphone to collect sound at a side facing away from the first casing 1314.

In other embodiments, the headset 10 may further include a stick microphone 134 detachably connected to the holding portion 13 or the free end of the hook portion 11 (i.e., the battery portion 113) far away from the connecting portion 12, and the free end of the stick microphone 134 may be provided with a microphone 1341 electrically connected to the main board 15. Thus, compared to the microphone 125 and the microphone 133, the stick microphone 134 can make the microphone 1341 closer to the mouth of the user, which is beneficial to increase the sound pickup effect. In the present application, the stick microphone 134 is described as an example to be detachably connected to the holding portion 13. For example, the main rod 1342 of the stick microphone 134 is detachably connected to the second housing 1315 by means of a snap or magnetism, and for example, the main rod 1342 is detachably connected to the second housing 1315 by means of a type-C plug, so as to shorten the wiring distance between the microphone 1341 and the motherboard 15.

Further, the headset 10 may be provided with other microphones, such as microphone 125 and/or microphone 133, in addition to the microphone 1341 on the stick microphone 134. When the stick microphone 134 is connected to the holding portion 13, the processing circuit may use the microphone 1341 as a main microphone and at least one of the microphone 133 and the microphone 125 as an auxiliary microphone, and may perform noise reduction processing on a sound signal collected by the main microphone through a sound signal collected by the auxiliary microphone, so as to increase a sound pickup effect. Accordingly, the processing circuit may switch the microphone 133 and the microphone 125 to an enabled state when the stick microphone 134 is separated from the holding part 13, and have one of the microphone 133 and the microphone 125 as a primary microphone and the other as a secondary microphone. Of course, the processing circuitry may also switch at least one of the microphone 133 and the microphone 125 to a disabled state when the stick-microphone 134 is connected to the holding portion 13 to conserve power while compromising sound pick-up and/or noise reduction.

With reference to fig. 16 and 17, the earphone 10 may further include a first charging electrode 126 provided at the holding portion 13 or the connecting portion 12 and a second charging electrode 1164 provided at the hook portion 11, one of the first charging electrode 126 and the second charging electrode 1164 serving as a charging positive electrode and the other serving as a charging negative electrode. Here, the first charging electrode 126 is used as a charging positive electrode, and the second charging electrode 1164 is used as a charging negative electrode for example. Like this, earphone 10 not only can charge through two charging electrodes, can also greatly increase the shortest distance between two charging electrodes, is favorable to preventing the short circuit that causes because of sweat, water droplet, dust etc. between the charging electrode like this. Of course, in the case where the short-circuit prevention is satisfied, both of the charging electrodes may be provided in one of the hook portion 11, the connecting portion 12, and the holding portion 13. Further, the two charging electrodes may be arranged to be invisible in a wearing state, e.g. both facing the skin of the user, to compromise the appearance quality of the headset 10.

As an example, the first charging electrode 126 may be disposed at the connection part 12, and the second charging electrode 1164 may be disposed at the battery part 116. In particular, first charging electrode 126 may be disposed at least partially on the periphery of second housing 1315, e.g., between third housing 122 and first housing 1314. Accordingly, a second charging electrode 1164 may be disposed on battery compartment 1161, e.g., at the bottom of battery compartment 1161 away from its open end. The first charging electrode 126 may be disposed in a column shape, the second charging electrode 1164 may be disposed in a strip shape, and a length direction of the strip shape may extend along a circumferential direction of the battery compartment 1161. Further, the first housing 1314 and the battery compartment 1161 may be respectively provided with through holes allowing the charging electrode to be exposed, so that the charging electrode is in contact with the output electrode on the charging cartridge. Therefore, compared with the columnar electrode, the strip-shaped electrode has larger contact area with the output electrode, so that the reliability of the charging electrode can be improved.

It should be noted that: the first charging electrode 126 may be provided in plurality, for example, two, at intervals at the connecting portion 12 so that one is still usable after the other fails. Further, a magnetic member such as a magnet may be disposed near each of the two charging electrodes to allow the earphone 10 to be in good contact with the output electrode of the battery box by means of magnetic attraction. Wherein, for the charging box, the relative position of the output electrode thereon can be adjusted along with the change of the charging electrode on the earphone 10.

Referring to fig. 21, since the second housing 1315 is farther away from the ear than the first housing 1314, the second housing 1315 may be provided with interaction components such as physical keys, a display screen, a touch control circuit board, etc. to facilitate the user's interaction with the headset 10.

Illustratively, the second housing 1315 may include a bottom wall 13151 disposed opposite the first housing 1314 and a sidewall 13152 connected to the bottom wall 13151, the sidewall 13152 extending toward the first housing 1314. The bottom wall 13151 is provided with a flexible touch circuit board 135 electrically connected to the main board 15 on a side facing the first housing 1314, and the flexible touch circuit board 135 may be based on any one of a capacitive type, a resistive type, a pressure-sensitive type, and the like, which is not limited herein. Thus, the interaction of the earphone 10 can be realized, and an additional through hole does not need to be arranged on the movement shell 131, so that the waterproof and dustproof performance is improved. Specifically, the flexible touch circuit board 135 may include a touch portion 1351 for receiving a touch operation and an electrical connection portion 1352 for connecting with the main board 15, for example, the flexible touch circuit board 135 may be snapped with the main board 15 by means of a BTB connector. Wherein, the area of the touch portion 1351 relative to the bottom wall 13151 may be greater than or equal to 70%. Based on the above description, the side wall 13152 near the third casing 122 may be open to facilitate the second casing 1315 to be spliced with the third casing 122. Wherein, the pressure relief hole 1312 and the sound adjusting hole 1313 can be arranged on the side wall 13152 and can be respectively arranged at two opposite sides of the open end.

Further, the bottom wall 13151 may be provided with a sinking groove 13153, and the touch portion 1351 may be attached to the bottom of the sinking groove 13153. In this way, the second casing 1315 is thinned locally to increase the sensitivity of the flexible touch circuit board 135. Furthermore, the main board 15 can be connected to the second housing 1315, and the flexible touch circuit board 135 can be pressed against the bottom wall 13151 through an elastic pad 1353, so that the touch portion 1351 can be tightly attached to the bottom wall 13151, and the touch portion 1351 can be prevented from being crushed. The depth of the sinking groove 13153 may be greater than or equal to the thickness of the touch portion 1351 and less than the sum of the thicknesses of the touch portion 1351 and the elastic pad 1353, so as to increase the pressing effect.

In some embodiments, the bottom wall 13151 may be provided with a plurality of heat-melting columns 13154, for example three, located at the periphery of the sinking groove 13153 and extending toward the main board 15, and a connection line of orthogonal projections of at least two of the plurality of heat-melting columns 13154 on the bottom wall 13151 may pass through an orthogonal projection of the touch portion 1351 on the bottom wall 13151; correspondingly, the main board 15 may be provided with connection holes corresponding to the heat-fusible pillars 13154, so as to allow the main board 15 to be sleeved and fixed on the heat-fusible pillars 13154 through the connection holes thereon. In short, if the touch 1351 is arranged in a rectangle, at least two heat stake posts 13154 may be arranged generally along the diagonal of the touch. Thus, the uniformity of the force distribution of the main plate 15 is increased. Of course, in other embodiments, the heat stake 13154 may be replaced by a screw, a snap, etc., without limitation.

Based on the above description, the microphone 133 may be directly disposed on the side of the main board 15 facing away from the bottom wall 13151 by an SMT process. Accordingly, the bottom wall 13151 may be provided with a flange 13155 at the periphery of the sinking groove 13153, the flange 13155 extending toward the main board 15 and having a sound pickup hole communicating with the outside of the earphone 10. At this time, the main board 15 may be pressed against the flange 13155 to allow the microphone 133 to pick up a sound signal through the sound pickup hole. The flange 13155 may be sleeved with a silicone sleeve 13156, so as to allow the motherboard 15 to be elastically supported on the flange 13155 by the silicone sleeve 13156. In this way, not only the sealing performance of the acoustic path of the microphone 133 can be increased, but also the uniformity of the stress distribution of the main board 15 can be increased.

Further, the second housing 1315 may be provided with a metal antenna pattern thereon to serve as a communication antenna of the headset 10. Accordingly, the bottom wall 13151 may be provided with an antenna contact 13157 located at the periphery of the recessed groove 13153 and electrically connected to the metal antenna pattern, and the main board 15 may be provided with a metal spring plate for elastically abutting against the antenna contact 13157. In short, the main board 15 can avoid unnecessary welding by the metal spring sheet and the antenna contact 13157 thereon, so as to reduce the assembly difficulty and save the inner space of the movement housing 131.

In summary, the main board 15 is connected to the second housing 1315, so that not only the main board can be fixed, but also the flexible touch circuit board 135 can be pressed, the sound path of the microphone 133 can be sealed, and the main board 15 can be electrically connected to the metal antenna pattern.

Based on the above description, with reference to fig. 21 and 27, the electronic component disposed in the hook portion 11 can be electrically connected to the main board 15 through the wire 117, and the electronic component disposed in the connecting portion 12 can be electrically connected to the main board 15 directly through the lead thereof due to the relative close distance to the main board 15. Wherein the wire 117 may be provided in a plurality of strands, and may include the positive and negative leads of the battery 16, the signal and shield wires of the detecting member 1163, and the negative lead of the second charging electrode 1164; of course, the shielding wire of the detecting element 1163 may be multiplexed with the lead wire of the second charging electrode 1164 to simplify the wiring. Furthermore, because the size of the main board 15 is limited and the number of electronic components integrated thereon is large, the wires 117 or other leads can be firstly welded on the flexible circuit board 136 and then connected with the main board 15 in a buckling manner through the flexible circuit board 136, which is beneficial to enlarging the size of the bonding pad and the distance between every two bonding pads, further reducing the welding difficulty and increasing the welding reliability.

As an example, the flexible circuit board 136 may include at least a first connection region 1361 for electrically connecting with the battery 16 and a second connection region 1362 for electrically connecting with the main board 15. Wherein, the second connecting region 1362 may be disposed along the main surface of the main board 15 to facilitate the snap-fit connection of the flexible circuit board 136 and the main board 15. Further, the first connection region 1361 may be bent toward the lateral direction of the main board 15 with respect to the second connection region 1362 and may be provided with a plurality of pads, that is, the above-mentioned soldering may occur at the lateral direction of the main board 15. Thus, since there is no interference of electronic components on the main surface of the main board 15, the difficulty of soldering can be reduced. Moreover, since the flexible circuit board 136 is thin, a portion thereof is bent toward the lateral direction of the main board 15, and the internal space of the movement case 131 can be saved. Based on the above-described related description, the plurality of pads provided at the first connection region 1361 may include first and second pads for solder connection with the positive and negative leads of the battery 16, respectively, may further include third and fourth pads for solder connection with the positive and negative leads of the charging electrode, respectively, and may further include fifth and sixth pads for solder connection with the signal line and the shield line of the detector 1163, respectively. Since the shielding wire of the detecting element 1163 and the lead wire of the second charging electrode 1164 can be multiplexed into one lead wire, the fourth pad and the sixth pad can be arranged in one lead wire, which is beneficial to enlarging the sizes of other pads and the distance between every two pads.

Based on the above-mentioned description, since the microphone 125 can be disposed at the connection portion 12 so as to be closer to the main board 15, the flexible circuit board 136 can further extend to the connection portion 12. Based on this, the flexible circuit board 136 may further include a third connection region 1363 connected to the first connection region 1361, and the third connection region 1363 may be bent toward a direction away from the main board 15 compared to the first connection region 1361, so that the third connection region 1363 is attached to the first housing 1314 and/or the third housing 122. Wherein the microphone 125 may be disposed at the third connection region 1363 by an SMT process. At this time, the first connection region 1361 and the third connection region 1363 may be perpendicular to the main surface of the main board 15, respectively, and the second connection region 1362 may be parallel to the main surface of the main board 15.

In contrast to the first connection region 1361: the second connection region 1362 may be snapped with the motherboard 15 by means of a BTB connector. Based on this, the flexible circuit board 136 may further include a transition region 1364 connecting the first connection region 1361 and the second connection region 1362, and the transition region 1364 may be located on the same side of the main board 15 as the second connection region 1362. 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, so that the first connection region 1361 is conveniently buckled with the main board 15. Illustratively, the transition region 1364 may be provided as a multi-segment bend structure and may be provided along a major surface of the main panel 15.

Referring to fig. 21, the movement 14 may include a magnetic circuit system 141 and a coil 142, and the coil 142 may extend into a magnetic gap of the magnetic circuit system 141 and may move in a magnetic field formed by the magnetic circuit system 141 in an energized state. The magnetic circuit system 141 may include permanent magnets, magnetic yokes, and brackets, and the specific structure and connection relationship thereof are well known to those skilled in the art and will not be described herein. Further, if the movement 14 is applied to a bone conduction earphone, the coil 142 may be configured to move a vibrating plate; if the movement 14 is used in an air conduction earphone, the coil 142 may be configured to move a diaphragm; of course, the coil 142 may also be configured to move a diaphragm and a diaphragm simultaneously. The present application takes the coil 142 driving a diaphragm to move as an example for illustration. Based on this, the movement 14 may further include a diaphragm 143 connected between the coil 142 and the magnetic circuit system 141, and the diaphragm 143 may generate sound transmitted to the ear through the sound outlet 1311 during vibration.

Further, the movement 14 may further include a metal spring 144 fixed on the periphery of the magnetic circuit system 141, and the metal spring 144 is electrically connected to the coil 142. At this time, the movement 14 is elastically pressed on the main board 15 by the metal elastic piece 144, so that the coil 142 is electrically connected with the contact on the main board 15. Thus, the metal elastic sheet 144 replaces the welding wire in the related art to avoid unnecessary welding, thereby reducing the assembly difficulty, and also avoiding the need to reserve a welding space, thereby saving the internal space of the movement shell 131. The number of the metal elastic pieces 144 may be two, and the metal elastic pieces may be used as a positive electrode lead and a negative electrode lead of the coil 142, respectively.

As an example, referring to fig. 26, the metal dome 144 may include a fixing portion 1441 and an elastic contact portion 1442 connected to one end of the fixing portion 1441, the fixing portion 1441 is connected to the magnetic circuit system 141, and the elastic contact portion 1442 extends toward the fixing portion 1441 and away from the magnetic circuit system 141. In short, the portion of the metal spring 144 electrically connected to the contact on the main board 15 protrudes from the magnetic circuit system 141. Further, the metal elastic sheet 144 may further include a limiting portion 1443 connected to the other end of the fixing portion 1441, and the limiting portion 1443 extends on the same side as the elastic contact portion 1442. The elastic contact portion 1442 further extends toward the limiting portion 1443, and the free end thereof is inserted into the limiting groove of the limiting portion 1443, so that the elastic contact portion 1442 can store an elastic potential energy in advance, and the contact between the metal elastic piece 144 and the contact on the motherboard 15 is further improved. At this time, the height of the middle portion of the elastic contact portion 1442 with respect to the fixing portion 1441 is greater than the height of the free end of the elastic contact portion 1442 with respect to the fixing portion 1441 so as to be in contact with the contact on the main board 15.

Based on the above description, magnetic circuit system 141 may be connected to first housing 1314 on the side facing second housing 1315, and main board 15 may be connected to second housing 1315 on the side facing first housing 1314. At this time, the second housing 1315 and the first housing 1314 are buckled, so that the metal elastic sheet 144 of the movement 14 is elastically pressed on the main board 15, which is simple and reliable and has high assembly efficiency. A metal spring 144 may be disposed on two opposite sides of the magnetic circuit system 141, so as to increase the stability of the second housing 1315, the main board 15 and the first housing 1314 holding the movement 14. Accordingly, the diaphragm 143 may be enclosed with the first housing 1314 to form the front cavity 200, for example, the magnetic circuit system 141 may be supported against the annular flange formed by splicing the above-mentioned second flange 13161 and first flange 13142; the magnetic circuit system 141 is provided with a through hole communicating the back cavity 300 with the side of the diaphragm 143 away from the front cavity 200. In other words, the movement 14 (specifically, the diaphragm 143) may divide the accommodating cavity formed by the movement housing 131 into the front cavity 200 and the rear cavity 300 which are opposite to each other. At this time, the orthographic projection of sound outlet 1311 in the vibration direction of movement 14 may at least partially fall on diaphragm 143. Further, the main plate 15 and the movement 14 are stacked in the thickness direction, and the movement 14 is closer to the ear portion than the main plate 15, so that a through hole for communicating the diaphragm 143 with the front cavity 200 on the side of the rear cavity 300 can be avoided from being formed in the main plate 15, and the structure is simplified. Based on this, the ratio between the overlapping area between the orthographic projection of the movement 14 on the above-mentioned reference plane (for example, the plane on which YZ is located) and the orthographic projection of the main plate 15 on the above-mentioned reference plane and the larger of the area of the orthographic projection of the main plate 15 on the above-mentioned reference plane and the area of the orthographic projection of the movement 14 on the above-mentioned reference plane may be between 0.8 and 1, for example, the area of the orthographic projection of the movement 14 on the above-mentioned reference plane is substantially equal to the area of the orthographic projection of the main plate 15 on the above-mentioned reference plane. Specifically, the ratio between the absolute value of the difference between the dimension of the movement 14 in the longitudinal direction and the dimension of the main plate 15 in the longitudinal direction and the larger of the dimension of the main plate 15 in the longitudinal direction and the dimension of the movement 14 in the longitudinal direction may be between 0 and 0.2, and the dimensional relationship between the two in the height direction may be the same or similar. Thus, under the condition that the volume of the accommodating cavity formed by the movement shell 131 is certain, the movement 14 can be as large as possible, so that the sound output loudness of the earphone 10 can be increased, and the frequency response range of the earphone 10 can be widened.

It should be noted that: with reference to fig. 26, although the movement 14 may also have a long axis direction (denoted by Y1) and a short axis direction (denoted by Z1) orthogonal to each other and perpendicular to the vibration direction (denoted by X1) of the movement 14, for convenience of description, the aforementioned vibration direction, long axis direction, and short axis direction may be parallel to the aforementioned thickness direction, long axis direction, and height direction, respectively, in the embodiments provided in the present application; of course, in other embodiments, an included angle is allowed. Further, the size of the movement 14 in the long axis direction thereof is larger than or equal to the size of the movement 14 in the short axis direction thereof. As an example, the orthographic projection of the movement 14 on a reference plane perpendicular to the vibration direction thereof may be a rectangular arrangement, in which case the long axis direction may be the direction of the long side of the rectangle, and the short axis direction may be the direction of the short side of the rectangle.

The inventors of the present application found in long-term studies that: when the main board 15 is disposed on the side of the movement 14 away from the front cavity 200, a large number of electronic components with different sizes and shapes disposed on the main board 15 will affect the sound quality of the earphone 10. For this purpose, with reference to fig. 22 or fig. 32, holding portion 13 may further include a partition 137 disposed in movement housing 131, partition 137 is mainly used to separate movement 14 from main plate 15, and may be enclosed with movement 14 to form a rear cavity 300, that is, an independent acoustic cavity. Specifically, the partition 137 may be located between the magnetic circuit system 141 and the main board 15, and may be enclosed with the magnetic circuit system 141 to form the rear cavity 300. Of course, in other embodiments, it is also possible to cover the main plate 15 with a membrane, so that the side of the main plate 15 facing the movement 14 is as flat as possible.

As an example, bulkhead 137 may be coupled to cartridge 14, i.e., modular, to facilitate assembly. Specifically, referring to fig. 25 and 30, partition 137 may include a bottom wall 1371 and a side wall 1372 connected to bottom wall 1371, bottom wall 1371 being spaced from magnetic circuit 141, side wall 1372 extending toward movement 14 and connecting to movement 14 (specifically, magnetic circuit 141) to allow partition 137 and movement 14 to enclose rear cavity 300. One side of partition 137 facing magnetic circuit system 141 may further be provided with a dispensing slot 1373 and a positioning column 1374 matched with magnetic circuit system 141, so that partition 137 is accurately assembled with movement 14. Accordingly, the metal dome 144 may be located at the periphery of the partition 137.

Based on the above-mentioned description, the side wall 1372 may be further provided with a communication hole allowing the rear chamber 300 to communicate with the outside of the earphone 10, for example, a first communication hole 1375 communicating the pressure relief hole 1312 with the rear chamber 300 and a second communication hole 1376 communicating the sound adjusting hole 1313 with the rear chamber 300. The partition 137 and the movement housing 131 may also elastically support and surround the sealing member of the communication hole to seal the sound path of the rear chamber 300 communicating with the outside of the earphone 10.

In the present application, the structural members such as the movement housing 131 and the movement 14 may be substantially a cubic structure, or may be a cylindrical structure, which is not limited herein. In the present application, a cubic structure of the movement 14 is exemplified. Based on this, the dimension of the partition 137 in the above-described longitudinal direction may be larger than or equal to the dimension of the partition 137 in the above-described height direction. With reference to fig. 25, side walls 1372 may include first and

third side walls

13721 and 13723 spaced apart from each other in the length direction, and second and

fourth side walls

13722 and 13724 spaced apart from each other in the height direction. Further, one of the second and

fourth sidewalls

13722 and 13724 may be provided with a first communication hole 1375, and the other may be provided with a second communication hole 1376. Based on the above description, the first communication hole 1375 may be formed in the second sidewall 13722, and the second communication hole 1376 may be formed in the fourth sidewall 13724. It is worth noting that: with reference to fig. 30 and 31, second sidewall 13722 may be omitted, and first connection hole 1375 is directly surrounded by bottom wall 1371, first sidewall 13721 and third sidewall 13723, as will be exemplarily described later.

Further, the third side wall 13723 may be farther from the sound outlet hole 1311 than the first side wall 13721, that is, farther from the connection portion 12 to be close to the free end of the holding portion 13. In this case, the first communication hole 1375 may have a size in the longitudinal direction larger than that of the second communication hole 1376, and the size in the thickness direction may be equal to each other, so that the actual areas of the effective communication areas of the rear cavity 300 and the outside of the ear cup 10 are adjusted by the first and

second communication holes

1376 and 1376, respectively. Based on this, first side wall 13721 and fourth side wall 13724 can be connected through first arc transition wall 13725 to the sharp structures such as right angle, closed angle appear in the inner wall of avoiding enclosing to establish formation rear cavity 300, and then be favorable to eliminating the standing wave. Wherein, first arc transition wall 13725 may be arc-shaped, and the arc radius may be greater than or equal to 2mm. Similarly, third side wall 13723 and fourth side wall 13724 may be connected by second curved transition wall 13726, and a radius of curvature of at least a portion of an inner wall surface of first curved transition wall 13725 may be greater than a radius of curvature of a corresponding portion of an inner wall surface of second curved transition wall 13726, which may also avoid sharp structures such as right angles, sharp corners, etc. around the inner wall that forms rear cavity 300. Of course, in some other embodiments, the second arc-shaped transition wall 13726 may not be provided, for example, the portion of the fourth side wall 1374 close to the third side wall 13723 may be entirely used to provide the second communication hole 1376, so that the second communication hole 1376 extends to be flush with the inner wall surface of the third side wall 13723 along the length direction.

It should be noted that: in the above-mentioned thickness direction, the inner wall that first intercommunicating pore 1375 kept away from core 14 can with diapire 1371 towards the internal wall face parallel and level of core 14, the inner wall that second intercommunicating pore 1376 kept away from core 14 can with diapire 1371 towards the internal wall face parallel and level of core 14, that is first intercommunicating pore 1375 and second intercommunicating pore 1376 can extend to the internal wall face parallel and level with diapire 1371 along above-mentioned thickness direction, in order to avoid enclosing the inner wall that establishes formation back chamber 300 and appear the right angle, sharp structures such as closed angle, and then be favorable to eliminating the standing wave. Further, the inner wall surface of at least one of the first side wall 13721 and the third side wall 13723 may be disposed in an arc shape as viewed along the height direction, so as to avoid the inner wall enclosing the rear cavity 300 from having a sharp structure such as a right angle and a sharp corner. Of course, the side wall 1372 and the inner wall surface of the bottom wall 1371 may be connected by a full arc.

In some embodiments, in conjunction with fig. 25, the heights of second and

fourth sidewalls

13722, 13724 relative to bottom wall 1371 may each be greater than the heights of first and

third sidewalls

13721, 13723 relative to bottom wall 1371 to allow movement 14 to be nested between second and

fourth sidewalls

13722, 13724, with first and

third sidewalls

13721, 13723 abutting a side of movement 14 toward bottom wall 1371, respectively. At this time, in the above thickness direction, the size of the first communicating hole 1375 may be greater than or equal to the distance between the bottom wall 1371 and the movement 14, and the size of the second communicating hole 1376 may be greater than or equal to the distance between the bottom wall 1371 and the movement 14, so as to avoid the inner wall enclosing the rear cavity 300 from having sharp structures such as right angles, sharp corners, and the like, and further facilitate eliminating standing waves. Further, holder 13 may further include first and

second seals

1381 and 1382 elastically supported between partition 137 and cartridge housing 131, such as first seal 1381 elastically supported between second side wall 13722 and second housing 1315 and surrounding first communication hole 1375, and such as second seal 1382 elastically supported between fourth side wall 13724 and second housing 1315 and surrounding second communication hole 1376. Furthermore, the outlet end of the first connecting hole 1375 can be covered with a first sound resistance net 1383, and a protective cover can be further covered on the side of the first sound resistance net 1383 departing from the side wall 1372. Similarly, the outlet end of the second communication hole 1376 may be covered by a second sound-blocking net 1384, and the side of the second sound-blocking net 1384 facing away from the side wall 1372 may be covered by a protective cover. The acoustic resistance net can not only increase the waterproof and dustproof performance, but also reduce the sound leakage; the structural strength of protection casing is greater than the structural strength of acoustic resistance net to avoid the acoustic resistance net to be punctured by the foreign object. Further, the porosity of the second acoustic resistive mesh 1384 may be less than or equal to the porosity of the first acoustic resistive mesh 1383.

Illustratively, first seal 1381 may include a first extension 13811 and a second extension 13812 connected to first extension 13811, second extension 13812 extending laterally of first extension 13811. First extension 13811 and second extension 13812 may be attached to side wall 1372 and bottom wall 1371 facing away from rear cavity 300 to increase the bonding area between first seal 1381 and partition 137. Accordingly, first extension 13811 allows the area of first acoustic resistance screen 1383 corresponding to first port 1375 to be exposed, e.g., first extension 13811 surrounds first port 1375 and first acoustic resistance screen 1383 thereon to facilitate communication between rear cavity 300 and the exterior of headphone 10. Further, first extension 13811 may hold first acoustic resistance mesh 1383 in compression against the side of side wall 1372 facing away from rear cavity 300 to prevent first acoustic resistance mesh 1383 from disengaging from side wall 1372.

In this embodiment, the structure of the second sealing member 1382 and the connection relationship between the second sealing member 1382 and the partition 137 may be the same as or similar to that of the first sealing member 1381, and thus, the description thereof is omitted. Further, the first and

second seals

1381 and 1382 may be formed on the partition 137 through an injection molding process.

It should be noted that: in this embodiment, the movement 14, the partition 137 and the components thereon, such as the acoustically resistive mesh and the sealing member, can form a speaker assembly, i.e., be modular, for ease of assembly.

In other embodiments, in conjunction with fig. 30, second side wall 13722 may be omitted; the fourth side wall 13724 may be partially used to provide the second communication hole 1376, and a height with respect to the bottom wall 1371 may be equal to a height of the first and

third side walls

13721 and 13723 with respect to the bottom wall 1371 to abut on the magnetic path system 141 together. At this time, the first sealing 1381 may be embedded in a predetermined groove of the first sealing 1381 or the second casing 1315, and then the first sealing 1381 is attached and fixed to the second casing 1315, and the second casing 1315 and the first sealing 1381 may further clamp the first acoustic resistance network 1383 together, and then the subsequent assembly may be performed. Wherein a side of the first seal 1381 facing the second housing 1315 may be provided with a recess for receiving the first acoustic resistance mesh 1383. Similarly, the second seal 1382 and the second acoustic impedance network 1384 may be attached to the second housing 1315 to form a housing assembly, i.e., modular, for ease of assembly.

Based on the above detailed description, and for ease of description, the following definitions are now made in conjunction with fig. 33: the front chamber 200 may have a first opening 201 allowing the front chamber 200 to communicate with the outside of the earphone 10, and the rear chamber 300 may have a second opening 301 and a third opening 302 allowing the rear chamber 300 to communicate with the outside of the earphone 10. Accordingly, the second opening 301 may be farther from the ear hole than the first opening 201 and the third opening 302. The first to third openings refer to effective communication areas of the front cavity 200 or the rear cavity 300 with the outside of the earphone 10, that is, areas with the smallest cross section through which sound passes 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: cartridge 14 cooperates with first housing 1314 (and cover 1316) to form front chamber 300, with first opening 201 corresponding to sound outlet 1311. In the embodiment where the earphone 10 is provided with the partition 137, that is, the partition 137 cooperates with the movement 14 to form the rear chamber 300, if the actual area of the pressure relief hole 1312 is larger than the actual area of the second communication hole 1376, the second opening 301 corresponds to the second communication hole 1376; the second opening 301 corresponds to the pressure relief hole 1312 if the actual area of the pressure relief hole 1312 is smaller than that of the second communication hole 1376; if the pressure relief hole 1312 and the second communication hole 1376 are disposed to be offset from each other, the second opening 301 corresponds to a portion where the pressure relief hole 1312 and the second communication hole 1376 are not blocked from each other. The third opening 302 is similar to the first opening, and is not described herein. In other embodiments of the earphone 10 without the partition 137, that is, the second casing 1315 cooperates with the movement 14 to form the rear cavity 300, the second opening 301 and the third opening 302 directly correspond to the pressure relief hole 1312 and the sound adjusting hole 1313, respectively. Of course, if the headset 10 is not provided with at least one of the front cavity 200 and the rear cavity 300, the corresponding opening may naturally also no longer be present.

Further, for convenience of description, the effective area in the present application may be defined as the product of the actual area of the effective communication area and the porosity of the covered acoustic resistance mesh. For example: when the first opening 201 is covered with the sound resistance net, the effective area of the first opening 201 is the product of the actual area of the first opening 201 and the porosity of the sound resistance net; when the first opening 201 is not covered with the 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 to each other, and are not described in detail herein. In the present application, the effective area of the third opening 302 may be smaller than the effective area of the second opening 301.

In some embodiments, with reference to fig. 25 and 30, the actual area of the outlet end of the second communication hole 1376 may be smaller than or equal to the actual area of the outlet end of the first communication hole 1375, so that the actual area of the effective communication area between the sound-tuning hole 1313 and the rear chamber 300 may be smaller than or equal to the actual area of the effective communication area between the pressure relief hole 1312 and the rear chamber 300. An actual area of an outlet end of the pressure relief hole 1312 may be greater than or equal to an actual area of an outlet end of the first communicating hole 1375. At this time, the size of the outlet end of the tone tuning hole 1313 in the longitudinal direction may be equal to the size of the outlet end of the pressure relief hole 1312 in the longitudinal direction; and/or, the size of the outlet end of the sound tuning hole 1313 in the thickness direction may be equal to the size of the outlet end of the pressure relief hole 1312 in the thickness direction. Therefore, the actual area of the effective communication area between the rear cavity 300 and the outside of the earphone 10 at the position of the sound adjusting hole 1313 and the pressure relief hole 1312 can be respectively adjusted through the size of the communication hole to meet the corresponding acoustic design requirement, the sound adjusting hole 1313 and the pressure relief hole 1312 can be enabled to be slightly different in appearance, the appearance consistency is increased, and the sound resistance nets with the same specification can be allowed to be used for reducing the material types and avoiding mixing. Of course, in other embodiments, the size of the sound adjusting hole 1313 may also be changed along with the change of the second communication hole 1376, so that it may be visually different from the pressure relief hole 1312 to increase the appearance recognition. Further, the porosity of the second acoustic impedance 1384 may also be less than or equal to the porosity of the first acoustic impedance 1383, such that the effective area of the effective communication area between the tuning hole 1313 and the rear cavity 300 may be less than or equal to the effective area of the effective communication area between the pressure relief hole 1312 and the rear cavity 300.

Further, the effective communication area (e.g., the first communication hole 1375) of the pressure relief hole 1312 and the rear chamber 300 may have a first center (denoted as O1) in the length direction, and the sound tuning hole 1313 and the effective communication area (e.g., the second communication hole 1376) of the rear chamber 300 may have a second center (denoted as O2) in the length direction, and the second center may be farther from the center (e.g., O0) of the sound outlet 1311 than the first center in the length direction, that is, closer to the third side wall 13723 mentioned above, so as to widen the distance between the sound tuning hole 1313 and the sound outlet 1311 as much as possible, thereby reducing phase-opposite cancellation between the sound output to the outside of the earphone 10 through the sound tuning hole 1313 and the sound transmitted to the ear through the sound outlet 1311.

It should be noted that: the center of a hole or opening in the present application refers to a position with equal distance to the periphery of a closed curve enclosing the hole or opening. Wherein, for regular shapes such as circular, rectangular, etc., the center of the hole or opening described in the present application may be the geometric center thereof; for other irregular shapes, the center of the hole or opening described herein may be its centroid.

Referring to fig. 34, the sound transmitted to the outside of the earphone 10 through the first opening 201 may be simply regarded as a 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 may be simply regarded as a second sound formed by the monopole sound source A2, which may be opposite in phase to the first sound, so that they cancel in anti-phase in the far field, that is, form an "acoustic dipole" to reduce leakage sound. Preferably, in the wearing state, the line connecting the two monopole sound sources can be pointed right at the ear hole (denoted as "listening position") so that the user can hear a sufficiently large sound. Wherein the sound pressure level (denoted as P) at the listening position _ear ) Can be used to characterize the intensity of the sound heard by the user. Further, the sound pressure level (denoted as P) on a spherical surface centered on the user's listening position is counted _far ) And can be used to characterize the intensity of the leakage sound radiated by the earphone 10 to the far field. Wherein P can be obtained by adopting various statistical modes _far For example, the average value of the sound pressures at the points on the sphere is taken, and the area is further taken by taking the sound pressure distribution of the points on the sphere. It is apparent that the sound pressure P delivered by the earphone 10 to the user's ear _ear Should be large enough to increase the listening effect; sound pressure P of far field _far Should be small enough to increase the leakage sound reduction effect. Therefore, the parameter α can be taken as an index for evaluating the leakage sound reduction/listening effect of the headphone 10:

further, when the headset 10 is worn, the orthographic projection of the holding portion 13 on the ear may mainly fall within the scope of the helix, for example, the holding portion 13 is located on the side of the ear hole near 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 may be positioned between the antihelix and the upper ear root and transmit sound to the ear hole. Further, since the cavum concha and the cymba concha have a certain depth and communicate with the ear canal, the orthographic projection of the first opening 201 on the ear can at least partially fall in the cavum concha and/or the cymba concha, so that the sound transmitted to the outside of the earphone 10 through the first opening 201 is transmitted to the ear canal. Furthermore, in combination with fig. 35 and 36, the ear portion also acts as a baffle disposed near the listening position, and has the functions of converging and reflecting the sound transmitted to the outside of the earphone 10, so as to change the sound field distribution, which is not only beneficial to increase the sound pressure at the listening position, but also beneficial to reduce the sound pressure in the far field. Specifically, the listening position is arranged between a baffle and the monopole sound source A1, and the baffle enables the sound field distribution to be distorted, so that the sound pressure of the listening position is increased; meanwhile, a large area of the anti-phase cancellation region still remains in the whole sound field, so that the sound pressure of a far field is reduced. It is worth noting that: the user's head may also be part of the barrier. Further, 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 an acoustic mirror.

The inventors of the present application found in long-term studies that: in a theoretical model of the acoustic dipole in cooperation with the baffle, in conjunction with fig. 37, the parameter α is mainly affected by: an included angle theta between a connecting line (marked as A1-A2) between the two monopole sound sources and a normal line of the baffle, a distance D between the two monopole sound sources, a distance D between the monopole sound source A1 and a listening position, a length L of the baffle and a distance B between the baffle and the listening position. Under the condition that the included angle theta and the distance d are fixed, the larger the length L of the baffle plate is, the smaller the distance B is, the smaller the parameter alpha is, and the better the sound leakage reducing effect is. Based on the above description, the user's ear can be viewed as a shield, such that the length L is relatively fixed, e.g., about 50-80mm, and the distance B is about 0. Further, in order to increase the sound pressure at the listening position and increase the listening effect, the first opening 201 is generally as close to the ear hole as possible, i.e. 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 16mm, for example, the distance between the lower edge of the holding portion 13 facing the ear hole and the highest point (e.g. CP 1) of the hook portion 11 facing away from the holding portion 13 in the height direction is greater than or equal to 19mm. Further, too small a distance d may result in a reduced sound pressure at the listening location, which is not conducive to listening; too large distance d will increase sound pressure in far field, which is not favorable for reducing leakage sound. In addition, the actual size of the holding portion 13 is also considered. Thus, the distance between the center of the second opening 301 and the center of the first opening 201 may be between 7mm and 15mm. In a particular embodiment, the distance between the centers of the second opening 301 and the first opening 201 may be 9mm.

Further, in conjunction with fig. 38, with "without baffle" as a reference, "with baffle" is obviously beneficial to reduce the parameter α, that is, to increase the leakage sound reduction effect; when the angle θ =0 °, the parameter α reaches a minimum value, indicating that the best leakage sound reduction effect can be obtained. In the present application, the included angle θ may be within ± 80 °; preferably, the included angle θ may be within ± 40 °; more preferably, the included angle θ may be within ± 20 °. In conjunction with fig. 33, the included angle θ may only take a positive value, considering that the second opening 301 is generally located on the side of the first opening 201 away from the ear hole.

As an example, in conjunction with fig. 39 and 33, a three-dimensional reference coordinate system (denoted as X 'Y' Z ') can be established based on any three of the above-mentioned basic tangent plane and basic axis perpendicular to each other, and then the included angle θ between the connecting line between the two monopole sound sources and the normal of the baffle can be determined by the included angles between the connecting line A1-A2 and the X', Y ', Z' axes, respectively. Based on the above description, the connection line A1-A2 between the two monopole sound sources can also be regarded as the connection line (denoted as O1-O0) between the center (e.g., O1) of the second opening 301 and the center (e.g., O0) of the first opening 201. On this basis, the angle θ 1 between the line O1-O0 and the sagittal plane described above may be greater than or equal to 10 °, preferably the angle θ 1 may be greater than or equal to 30 °; the angle θ 2 with the above-mentioned coronal plane may be greater than 0 °, preferably the angle θ 2 may be greater than or equal to 4 °; the angle θ 3 to the above horizontal plane may be less than or equal to 80 °, and preferably the angle θ 3 may be less than or equal to 60 °. In a specific embodiment, the three included angles θ 1, θ 2, and θ 3 may be 34 °, 5 °, and 56 °, respectively.

Furthermore, when the earphone 10 is worn, the holding portion 13 can be tightly attached to the front side of the ear, and the first opening 201 on the holding portion can also be directly opposite to the ear, so that the baffle can be simply regarded as being perpendicular to the average normal line of the first opening 201. Based on this, the angle between the line O1-O0 and a reference plane perpendicular to the average normal of the first opening 201 may be between 25 ° and 55 °. Wherein, the calculation formula of the average normal is as follows:

in the formula (I), the compound is shown in the specification,

is the above average normal; />

Is the normal of any point on the surface and ds is the bin.

Obviously, when the first opening 210 is a plane, a reference plane perpendicular to the average normal line is a tangential plane of the first opening 201; accordingly, the average normal line may be parallel to the vibration direction of the movement 14 and the thickness direction. Therefore, the angle between the line O1-O0 and the aforementioned vibration direction may be between 0 ° and 50 °, preferably between 0 ° and 40 °.

Further, based on the above description, the ear can be simply regarded as a baffle cooperating with an acoustic dipole, and then a reference plane can be determined by at least three physiological positions on the front side of the ear that are not collinear, for example, the connection between the superior ear root, the intertragic notch and the darwinia tubercle forms 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 aforementioned reference plane may be between 23 ° and 53 °. In one embodiment, the connection line O1-O0 may be at an angle of 38 degrees to the reference plane.

Further, when the earphone 10 is worn, a plurality of contact points are formed with the ear to ensure the wearing stability, so that positions corresponding to the contact points one by one exist on the earphone 10; of course, in those embodiments in which the hook portion 11 is provided with the elastic portion 112, the elastic deformation of the elastic portion 112 before and after wearing may cause a certain deviation in the correspondence relationship, and the deviation may be controlled by the deformation capability of the elastic portion 112. Thus, for ease of description, we consider such deviations to be tolerable. By way of example, in connection with fig. 17 and 45, the free end of the holding portion 13 remote from the fixing member 20 may have a first reference point (e.g., CP 0) for contacting the front side of the ear, the fixing member 20 may have a second reference point (e.g., CP 3) for contacting the upper heel and a third reference point (e.g., CP 6) for contacting the ear at the rear side of the ear, and a line connecting the first reference point, the second reference point and the third reference point, two by two, forms a reference plane (denoted CP0-CP3-CP 6) which may be used to describe the aforementioned barrier. Based on this, the angle between the line O1-O0 and the aforementioned reference plane may be between 15 ° and 45 °. In one embodiment, the connection line O1-O0 may be at an angle of 30 degrees to the reference plane.

It should be noted that: the front side surface of the ear is not a flat, regular structure compared to the baffle, and therefore the other parameters related to the parameter α are obtained by theoretical analysis and actual measurement. The actual measurement may refer to a measurement performed after the headset 10 is worn on the simulator (e.g., GRAS 45BC KEMAR).

It is well known that although the frequency range of sounds that can be perceived by the ear of a normal person is between 20Hz and 20kHz, this does not mean that all of these sounds can be heard. In general, the ears of a normal person mainly hear sounds having frequencies below 4 kHz. Based on this, on 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 a high frequency as much as possible, and the frequency response curve of the first sound can be made as flat as possible in the middle and high frequency bands and above, so as to increase the listening effect. On the other hand, the resonant frequency of the second sound transmitted to the outside of the earphone 10 through the second opening 301 may also be shifted to a high frequency as much as possible, so that the sensitivity of the user to the leakage sound may be reduced, and the phase reversal cancellation may also be extended to a high frequency band, so as to reduce the leakage sound without affecting the listening effect. Therefore, the frequency response curve of the first sound may have a first middle-high frequency lowest harmonic peak, which is the lowest of all harmonic peak frequencies in the middle-high frequency and above frequency bands of the frequency response curve formed by the first opening 201; similarly, the frequency response curve of the second sound may have a second middle-high frequency lowest harmonic peak, which is the lowest of all the harmonic peak frequencies in the middle-high frequency and above frequency bands 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 resonant peak with the lowest frequency in the middle and high frequency bands; similarly, the frequency response curve of the second sound may have a second harmonic peak with the lowest frequency in the mid-high frequency band and above. Wherein, the peak resonant frequency of the first middle and high frequency lowest resonant peak and the second middle and high frequency lowest resonant peak can be greater than or equal to 5kHz. Preferably, the peak resonant frequency of each of the first middle and high frequency lowest resonant peak and the second middle and high frequency lowest resonant peak may be greater than or equal to 6kHz. Further, the difference between the peak resonance frequency of the first mid-high frequency lowest resonance peak and the peak resonance frequency of the second mid-high frequency lowest resonance peak may be less than or equal to 1kHz, so that the second sound better cancels out in phase opposition with the first sound in the far field.

It should be noted that: in the present application, the frequency range corresponding to the low frequency band may be 20 to 150Hz, the frequency range corresponding to the middle frequency band may be 150 to 5kHz, and the frequency range corresponding to the high frequency band may be 5k to 20kHz. Wherein, the frequency range corresponding to the middle and low frequency band can be 150-500Hz, and the frequency range corresponding to the middle and high frequency band can be 500-5kHz. For the frequency response curves described herein, the horizontal axis may represent frequency in Hz; the vertical axis may represent intensity, which is in dB. Further, the first middle-high frequency lowest harmonic peak may include a harmonic peak generated by resonance of the cavity, or a standing wave peak generated by reflection of a cavity surface of the cavity; the second middle-high frequency lowest resonant peak is similar to the first middle-high frequency lowest resonant peak, and is not described in detail herein.

Based on the above detailed description, the user mainly listens to the first sound when wearing the earphone 10, and therefore the peak resonant frequency of the lowest resonant peak of the first middle and high frequency has a large influence on the listening effect. For this reason, the first middle-high frequency lowest resonance peak is studied accordingly in order to increase the listening effect. The resonant peak of the frequency response curve of the first sound in the middle and high frequency bands and above frequency bands may mainly originate from cavity resonance, and generally satisfies a calculation formula of the resonant frequency of the helmholtz resonant cavity:

in the formula (f) ₀ Resonant frequency of resonance of the cavity, c ₀ To 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. Where l generally depends on the wall thickness of the housing.

Obviously, the larger the actual area of the first opening 201 is, the smaller the volume of the front cavity 200 is, and the higher the resonant frequency corresponding to the cavity resonance is, that is, the higher the first middle-high frequency lowest resonant peak is, the easier it is to shift to a higher frequency. Further, the first opening 201 is also covered with an acoustic resistance net to increase the waterproof and dustproof performance and adjust the frequency response curve. Illustratively, the effective area of the first opening 201 may 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 7mm ² The porosity of the acoustic resistance net covered on the acoustic resistance net can be more than or equal to 13 percent; 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 90mm ³ . The volume of the front cavity 200 may be about the product of the area of the diaphragm 143 and the depth of the front cavity 200 in the vibration direction of the movement 14. Based on this, after the specification model of the movement 14 is selected, and on the premise that the vibration stroke of the diaphragm 143 is satisfied, the depth of the front cavity 200 in the aforementioned vibration direction is as small as possible. Therefore, the maximum depth of the front chamber 200 in the aforementioned vibration direction may be less than or equal to 3mm, preferably less than or equal to 1mm.

Further, referring to fig. 40, when the front cavity 200 is configured as a cubic structure, the cavity surfaces of the front cavity 200 form at least one pair of parallel or approximately parallel reflection surfaces, thereby forming a standing wave. Specifically, when an acoustic wave is reflected within the cavity, the incident wave and the reflected wave are superimposed to form a fixed antinode, thereby inducing a standing wave at a particular frequency. In other words, the resonant peak of the frequency response curve of the first sound in the middle and high frequency bands and above may also originate from a standing wave, which generally satisfies the calculation formula:

n is a positive integer.

In the formula, f ₀ Is the frequency of the standing wave peak, c ₀ L is the distance between the center of the first opening 201 and the cavity surface of the front cavity 200, which is the speed of sound in air.

Obviously, the smaller the distance L, the higher the frequency corresponding to the stationary peak, i.e. the higher the frequency shift of the first middle-high frequency lowest harmonic peak. Illustratively, the distance between the center of the first opening 201 and the cavity surface of the front cavity 200 may be less than or equal to 17.15mm on a reference plane (e.g., a plane on which Y1Z1 is located) perpendicular to the vibration direction of the movement 14.

Based on the above-described related description, front cavity 200 may have first and third

front facets

202, 204 spaced from each other in the long axis direction of core 14 and second and fourth

front facets

203, 205 spaced from each other in the short axis direction of core 14. Wherein the first front facet 202 can be closer to the connection 12 than the third front facet 204, the fourth front facet 205 can be closer to the ear opening than the second front facet 203, and the spacing between the first front facet 202 and the third front facet 204 can be greater than or equal to the spacing between the second front facet 203 and the fourth front facet 205. Further, the vertical distances from the center of the first opening 201 to the first front facet 202, the second front facet 203, the third front facet 204, and the fourth front facet 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, it is assumed that the four vertical distances have the following basic relationship: l1 is more than or equal to L2 and more than or equal to L3 and more than or equal to L4, then the corresponding frequency of the standing wave crest has the following relation: f1 is more than or equal to f2 and more than or equal to f3 and more than or equal to f4. Obviously, the first stationary peak of the first sound in the mid-high band and above will be determined by the largest of the four vertical distances, and thus may be L1 ≦ 17.15. Illustratively, the first distance may be less than or equal to the third distance and the fourth distance may be less than or equal to the second distance to bring the first opening 201 closer to the ear canal.

It should be noted that: the first opening 201 may be opposite to the diaphragm 143 in the vibration direction of the movement 14, and a ratio between a dimension of the first opening 201 in the long axis direction of the movement 14 and a dimension of the first opening 201 in the short axis direction of the movement 14 may be less than or equal to 3, for example, the first opening 201 is provided in a circular shape, and further, for example, the first opening 201 is provided in a racetrack shape.

Referring to fig. 41, the earphone 10 may further include a helmholtz resonator 400 communicated with the front cavity 200, where the helmholtz resonator 400 is configured to weaken the peak resonance strength of the first middle-high frequency lowest resonance peak, that is, to absorb the sound energy of the front cavity 200 near the peak resonance frequency, so as to suppress the sudden increase of the peak resonance strength, so that the frequency response curve is flatter, and the sound quality is more balanced. By way of example, and in conjunction with FIG. 42, the difference between the peak resonance strength of the first mid-to-high frequency lowest resonance peak when the Helmholtz resonating cavity 400 communicates with the front cavity 200 in the open state (denoted as "HR _ Y") and the peak resonance strength of the first mid-to-high frequency lowest resonance peak when the Helmholtz resonating cavity 400 communicates with the front cavity 200 in the closed state (denoted as "HR _ N") may be greater than or equal to 3dB. Further, an opening of the helmholtz resonator 400 communicating with the front cavity 200 may be further provided with an acoustic resistance net to further adjust the frequency response curve. Wherein the porosity of the acoustically resistive mesh may be greater than or equal to 3%.

Further, the number of helmholtz resonator cavities 400 may be multiple to better absorb acoustic energy of the front cavity 200 near the peak resonant frequency. Wherein a plurality of helmholtz resonator cavities 400 may be disposed in parallel with the front cavity 200, for example, in communication with the front cavity 200, respectively; alternatively, multiple Helmholtz resonating cavities 400 may be disposed in series with front cavity 200, such as by one of which communicating with front cavity 200.

In some embodiments, in conjunction with fig. 22, the helmholtz resonator 400 may be disposed within the second region 13B, e.g., within the flexible cladding structure 132. Specifically, the blind hole 1321 in the flexible covering structure 321 can also be used as the helmholtz resonator 400 in addition to providing the flexible covering structure 132 with a deformation space. Accordingly, the cover plate 1316 has a communication hole for communicating the helmholtz resonator 400 with the front chamber 200.

In other embodiments, with reference to FIG. 27, the Helmholtz resonance chamber 400 may be disposed within the connection portion 12, for example, between the third housing 122 and the first housing 1314. Specifically, the inner wall surface of the first housing 1314 facing the third housing 122 may be provided with a first flange, on which the third housing 122 is pressed to enclose the helmholtz resonator 400; alternatively, the inner wall of the third housing 122 facing the first housing 1314 may be provided with a second flange on which the first housing 1314 is pressed to enclose the Helmholtz resonance chamber 400. In short, the helmholtz resonator 400 is formed by the engagement of the third housing 122 and the first housing 1314. Further, the helmholtz resonator 400 may also be formed by a blow molding process and then placed and fixed within the connection portion 12.

Based on the above detailed description, in order to shift the resonant frequency of the second sound to a high frequency as much as possible, the rear cavity 300 may also adopt the same or similar technical solution as the front cavity 200, and will not be described again. The main differences from the front chamber 200 are: for the standing wave, the rear cavity 300 may also make the wavelength of the standing wave in the rear cavity 300 short by destroying the high-pressure region of the sound field in the rear cavity 300, so that the peak resonant frequency of the lowest resonant peak of the second middle-high frequency is as large as possible. Wherein, in conjunction with fig. 33, the third opening 302 may be disposed in the high pressure region of the sound field in the rear chamber 300, for example, the third opening 302 and the second opening 301 are located on opposite sides of the movement 14. Illustratively, and in conjunction with fig. 44, the peak resonant frequency of the second middle-high frequency lowest harmonic peak when the third opening 302 is in the open state (denoted as "Turn-on") may be shifted toward a high frequency compared to the peak resonant frequency of the second middle-high frequency lowest harmonic peak when the third opening 302 is in the closed state (denoted as "Turn-off"), and the shift amount may be greater than or equal to 1kHz. Further, the effective area of the third opening 302 may be smaller than the effective area of the second opening 301, so as to adjust the peak resonance frequency of the lowest resonance peak of the second middle-high frequency. Of course, the size of the second opening 301 in the long axis direction of the movement 14 may be larger than the size of the first opening 201 in the long axis direction of the movement 14.

Based on the above-described description in connection with fig. 43, rear cavity 300 may have first and second

rear facets

303 and 304 spaced from each other in the direction of the major axis of cartridge 14, and second and

third openings

302 and 302 may be spaced from each other in the direction of the minor axis of cartridge 14. Wherein the actual area of the third opening 302 may be smaller than the actual area of the second opening 301, so that the effective area of the third opening 302 may be smaller than the effective area of the second opening 301. At this time, at least one of the first rear cavity surface 303 and the second rear cavity surface 304, which is close to the third opening 302, may be disposed in an arc shape when viewed along the vibration direction of the movement 14, so as to avoid the inner wall enclosing the rear cavity 300 from having sharp structures such as right angles and sharp corners, which is beneficial to eliminating standing waves. Further, at least one of the first facet 303 and the third facet 305 can be curved when viewed along the short axis, which is also beneficial for eliminating standing waves.

Further, the opening direction of the second opening 301 may be toward the top of the head of the user, for example, the included angle between the opening direction and the vertical axis is between 0 ° and 10 °, so as to allow the second opening 301 to be farther away from the ear hole than the third opening 302, thereby making it difficult for the user and others in the surrounding environment to hear the sound outputted to the outside of the earphone 10 through the second opening 301, so as to reduce the sound leakage. The opening direction of the second opening 301 may refer to a direction of an average normal line thereof. Accordingly, the second opening 301 may have a first center (e.g., O1) in the long axis direction of the movement 14, the third opening 302 may have a second center (e.g., O2) in the long axis direction, and the second center is farther from the center of the first opening 201 than the first center in the long axis direction, so as to enlarge the distance between the third opening 302 and the first opening 201 as much as possible, thereby reducing phase opposition 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 connection portion 12 than the second rear cavity surface 304, and a curvature radius of at least a partial section of the first rear cavity surface 303 may be larger than a curvature radius of a corresponding section of the second rear cavity surface 204.

As an example, the first rear cavity surface 303 may include a first sub rear cavity surface 3031, a second sub rear cavity surface 3032 and a third sub rear cavity surface 3033 which are connected in sequence, and the first sub rear cavity surface 3031 may be closer to the second opening 301 and farther from the second rear cavity surface 304 than the third sub rear cavity surface 3033. Wherein at least the second sub rear cavity surface 3032 of the second sub rear cavity surface 3032 and the third sub rear cavity surface 3033 may be arranged in an arc shape. For example: the second sub rear cavity surface 3032 is arranged in a circular arc shape, and the radius of the circular arc is larger than or equal to 2mm. At this time, in a direction in which the second opening 301 points to the third opening 302, an angle between a tangent of the second sub rear cavity surface 3032 and the minor axis direction of the movement 14 may gradually become larger, and an angle between a tangent of the third sub rear cavity surface 3033 and the minor axis direction may be kept constant or gradually become smaller.

It should be noted that: the fixing member 20 is connected to the holding portion 13, and is mainly used to make the holding portion 13 contact with the front side of the ear in a wearing state. Based on this, in some embodiments, the fixing assembly 20 may include the hook portion 11 and the connection portion 12 connecting the hook portion 11 and the holding portion 13, and the related structure and the connection relationship thereof may refer to the detailed description of any embodiment of the present application, and are not described herein again. In other embodiments, in conjunction with fig. 45, the fixing member 20 may be annularly disposed and wound on the ear, for example, as shown in fig. 45 (a); it can also be arranged in an ear-hook and back-hook structure and wound on the back side of the head, for example, as shown in fig. 45 (b); or may be provided in a head-beam configuration and around the head top, as shown in fig. 45 (c), for example.

Further, the technical solution described in the present application may be applied to hearing aids, audio glasses, or other smart glasses such as AR, VR, MR, etc. besides earphones.

The above description is only a part of the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent devices or equivalent processes that can be directly or indirectly applied to other related technologies, which are made by using the contents of the present specification and the accompanying drawings, are also included in the scope of the present application.

Claims

1. An earphone, characterized in that the earphone comprises a hook part, a connecting part and a holding part, wherein the connecting part connects the hook part and the holding part, the hook part is used for being hung between the back side and the head of the ear of a user in a wearing state, and the holding part is used for contacting the front side of the ear so as to allow the holding part and the hook part to be matched for clamping the ear; the holding part is provided with a thickness direction, the thickness direction is defined as the direction in which the holding part is close to or far away from the ear part in the wearing state, and the orthographic projection of the hook part on a reference plane vertical to the thickness direction is overlapped with the orthographic projection of the holding part on the reference plane.

2. The headphone according to claim 1, wherein the hook portion includes an elastic portion connected to the connecting portion and a battery portion located at a free end of the hook portion, an orthogonal projection of the elastic portion on the reference plane coincides with an orthogonal projection of the holding portion on the reference plane, and an orthogonal projection of the battery portion on the reference plane and an orthogonal projection of the holding portion on the reference plane are offset from each other.

3. The earphone according to claim 2, wherein the holding portion includes a movement case connected to the connecting portion and a movement provided in the movement case, the movement case being provided with a sound outlet, the movement being capable of generating sound transmitted to the ear through the sound outlet.

4. The headset of claim 3, wherein a side of the movement housing facing the ear is provided with a flexible cover structure, a shore hardness of the flexible cover structure is less than a shore hardness of the movement housing, and an orthographic projection of the hook portion on the reference plane coincides with an orthographic projection of the flexible cover structure on the reference plane.

5. The earphone according to claim 4, wherein the flexible coating structure is at least arranged at a free end of the holding part far away from the connecting part, and a surface of the flexible coating structure facing the movement shell is concavely provided with a plurality of blind holes spaced from each other.

6. The earphone according to claim 5, wherein the movement housing is provided with through holes corresponding to and communicating with the blind holes one to one, and the holding portion further comprises a cover plate provided in the movement housing, the cover plate being configured to close the through holes.

7. The headset of claim 4, wherein the flexible cover structure includes an inner flexible body disposed on the deck housing and an outer flexible body covering at least the inner flexible body, the shore hardness of the inner flexible body being less than the shore hardness of the outer flexible body, the flexible cover structure contacting the ear through the outer flexible body, and an orthographic projection of the hook portion on the reference plane coinciding with an orthographic projection of the inner flexible body on the reference plane.

8. The earphone of claim 7, wherein a blind hole is recessed in a face of the outer flexible body facing the movement housing, and the inner flexible body is disposed in the blind hole and contacts the outer flexible body.

9. The earphone according to claim 8, wherein a through hole communicating with the blind hole is provided at a side of the casing facing the outer flexible body, the inner flexible body is provided in the blind hole through the through hole, and the holding portion further comprises a cover plate provided in the casing for closing the through hole.

10. The earphone according to claim 7, wherein a side of the holding portion facing the ear includes a first region and a second region, the second region is farther from the connecting portion than the first region, the sound outlet hole is located in the first region, the inner flexible body is located in the second region, the inner flexible body projects out of the movement case toward the ear so that the second region projects toward the ear than the first region and allows the sound outlet hole to be spaced from the ear in a worn state, and an orthographic projection of the elastic portion on the reference plane coincides with an orthographic projection of the second region on the reference plane.