Earphone

Abstract

This application mainly relates to earphones. The earphones include a core module and a hook-shaped structure. The core module is located on the front side of the ear in the worn state, and at least a part of the hook-shaped structure is located on the rear side of the ear in the worn state. The core module includes a core housing and a speaker. The hook-shaped structure includes an adapter housing connected to the core housing. At least a part of the adapter housing is located on the front side of the ear in the worn state. An accommodation cavity and a through hole communicating with the accommodation cavity are formed in the adapter housing, whereby some components of the earphone can be accommodated in the accommodation cavity, which is advantageous for saving the space of the core module and can make the volume of the speaker as large as possible. The earphone includes electrode terminals at least part of which are installed in the through hole, which is advantageous for shortening the distance between the electrode terminals and the speaker in the length direction of the hook-shaped structure. By fully utilizing the magnetic attraction force between the magnetic circuit system of the speaker and the magnetic attraction structure in the charging case, the electrode terminals are surely brought into contact with the electrode terminals in the charging case.

Description

Technical Field

[0001] This application relates to the technical field of electronic devices, and specifically to earphones.

Background Art

[0002] With the popularization of electronic devices, electronic devices have become indispensable social and entertainment tools in people's daily lives, and people's requirements for electronic devices are also getting higher and higher. Electronic devices such as earphones and smart glasses are widely applied in people's daily lives. By cooperating with terminal devices such as mobile phones and computers, users can enjoy a rich auditory experience. Regarding earphones, problems such as insufficient maximum volume due to the speaker being too small in volume and poor contact between the electrode terminals on the earphone and the electrode terminals in the charging case are likely to occur.

Summary of the Invention

Means for Solving the Problems

[0003] The earphone according to this application includes a core module and a hook-shaped structure connected to the core module. The core module is located on the front side of the ear in the wearing state, and at least a part of the hook-shaped structure is located on the rear side of the ear in the wearing state. The core module includes a core housing and a speaker installed in the core housing. The hook-shaped structure includes an adapter housing connected to the core housing. At least a part of the adapter housing is located on the front side of the ear in the wearing state. An accommodation cavity and a through hole communicating with the accommodation cavity are formed in the adapter housing. The earphone includes electrode terminals at least a part of which are installed in the through hole.

[0004] In some embodiments, the electrode terminals face the front side of the ear in the wearing state.

[0005] In some embodiments, the electrode terminals include a charging positive electrode terminal, a charging negative electrode terminal, and a communication terminal installed at intervals from each other.

[0006] In some embodiments, the distance between the charging positive electrode terminal and the charging negative electrode terminal is greater than the distance between the charging positive electrode terminal and the communication terminal, and the distance between the charging positive electrode terminal and the communication terminal is greater than the distance between the communication terminal and the charging negative electrode terminal.

[0007] In some embodiments, when viewed from the extending direction of the electrode terminals, the charging positive electrode terminal, the communication terminal, and the charging negative electrode terminal are arranged in a straight line in sequence.

[0008] In some embodiments, a blind hole that does not communicate with the accommodation cavity is formed in the adapter housing, a magnet is installed in the blind hole, and the magnet and the electrode terminals are seen on the same side surface of the adapter housing.

[0009] In some embodiments, when viewed from the extending direction of the electrode terminals, the magnet and the core module are located on both sides of a straight line segment respectively.

[0010] In some embodiments, the area of the outer surface of the adapter housing in a reference cross-section perpendicular to the length direction of the hook-shaped structure gradually decreases along the length direction of the hook-shaped structure and in the positive direction away from the core module. There are a first distance, a second distance, and a third distance respectively between the center of the magnet and the centers of the charging positive electrode terminal, the communication terminal, and the charging negative electrode terminal, and the third distance is greater than the first distance and the second distance respectively.

[0011] In some embodiments, the hook-shaped structure includes an elastic wire connected to the adapter housing and an elastic coating layer that covers at least the adapter housing and the elastic wire. At least a part of the elastic wire is located at the rear side of the ear part in the mounted state. Due to the elastic coating layer, the magnet is not exposed, and the electrode terminals are exposed.

[0012] In some embodiments, the core housing has a first inner surface facing the earpiece along the thickness direction in the mounted state and an outer surface facing away from the earpiece, and the thickness direction is defined as the direction in which the core module is close to or away from the earpiece in the mounted state. The adapter housing has a second inner surface facing the earpiece along the thickness direction in the mounted state, and the second inner surface is bent in a direction away from the outer surface with respect to the first inner surface in the thickness direction. The electrode terminal is exposed on the second inner surface, and the extending direction of the electrode terminal intersects the winding direction of the coil of the speaker.

[0013] In some embodiments, the core module includes a main control circuit board installed in the core housing and coupled to the speaker. The main control circuit board and the speaker are stacked and installed in the thickness direction and are located on the side facing the outer surface of the speaker.

[0014] In some embodiments, the core housing includes an inner core housing and an outer core housing covering the inner core housing. The inner core housing is closer to the earpiece than the outer core housing in the mounted state, and at least one of the inner core housing and the outer core housing is inserted and fixed to the adapter housing. Alternatively, the core housing includes an inner core housing and an outer core housing covering the inner core housing. The inner core housing is closer to the earpiece than the outer core housing in the mounted state, and one of the inner core housing and the outer core housing is installed as a structural member integrally formed with the adapter housing.

[0015] In some embodiments, in the mounted state, a sound emitting hole is installed on the side of the core housing facing the earpiece. The sound wave generated by the speaker is propagated to the outside through the sound emitting hole. The free end not connected to the hook-shaped structure of the core module enters the concha cavity of the earpiece in the mounted state, whereby the core module and the concha cavity can engage to form an auxiliary cavity communicating with the external auditory canal of the earpiece, and at least a part of the sound emitting hole is located in the auxiliary cavity.

[0016] In some embodiments, the auxiliary cavity is semi-open.

[0017] The earphone according to the present application includes a core module and a hook-shaped structure connected to the core module. The core module is located on the front side of the ear in the wearing state, and at least a part of the hook-shaped structure is located on the rear side of the ear in the wearing state. The earphone includes a charging positive terminal, a charging negative terminal, and a communication terminal that are installed at intervals from each other. The charging positive terminal, the charging negative terminal, and the communication terminal are located on the same side of the ear in the wearing state. The distance between the charging positive terminal and the charging negative terminal is greater than the distance between the charging positive terminal and the communication terminal, and the distance between the charging positive terminal and the communication terminal is greater than the distance between the communication terminal and the charging negative terminal.

[0018] The beneficial effects of the present application are as follows. In the earphone according to the present application, at least a part of the core module and the hook-shaped structure are located on the front side and the rear side of the ear respectively in the wearing state, so that the earphone can be worn on the ear. An accommodation cavity and a through hole communicating with the accommodation cavity are formed in the adapter housing, so that some parts of the earphone can be accommodated in the accommodation cavity, which is beneficial to saving the space of the core module and making the volume of the speaker in the core module as large as possible. The earphone includes electrode terminals at least a part of which are installed in the through hole, which is beneficial to shortening the distance between the electrode terminals and the speaker in the length direction of the hook-shaped structure, and by fully utilizing the magnetic attraction force between the magnetic circuit system (including the magnet) of the speaker and the magnetic attraction structure in the charging case, the electrode terminals can be surely contacted with the electrode terminals in the charging case.

[0019] To more clearly explain the technical means in the embodiments of the present application, the drawings necessary for the description of the embodiments are briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings based on these drawings without creative effort.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Figure 19

Figure 20

Figure 21

Figure 22

Figure 23

Figure 24

Figure 25

Figure 26

Modes for Carrying Out the Invention

[0021] Hereinafter, with reference to the drawings and examples, the present application will be described in more detail. Note that the following examples are merely for explaining the present application and do not limit the scope of the present application. Similarly, the following examples are only some examples of the present application, not all examples, and all other examples that can be obtained without creative effort by those skilled in the art are all included in the protection scope of the present application.

[0022] References to "examples" in this application mean that the specific features, structures, or characteristics described in connection with the examples are included in at least one example of this application. Those skilled in the art can explicitly and implicitly understand that the examples described in this application can be combined with other examples.

[0023] As shown in FIG. 1, the user's ear part 100 may include physiological parts such as the ear canal 101, the concha cavity 102, the scaphoid fossa of the concha 103, the triangular fossa 104, the antihelix 105, the cymba conchae 106, the helix 107, and the antitragus 108. The ear canal 101 has a certain depth and extends to the eardrum of the ear part. For the convenience of description, as shown in FIG. 1, in this application, unless otherwise specified, the ear canal 101 specifically refers to the entrance (i.e., the earhole) facing away from the eardrum. Further, physiological parts such as the concha cavity 102, the scaphoid fossa of the concha 103, and the triangular fossa 104 have a certain volume and depth. The concha cavity 102 communicates directly with the ear canal 101, that is, it can be simply considered that the aforementioned earhole is located at the bottom of the concha cavity 102.

[0024] Furthermore, since there may be individual differences among different users, there are dimensional differences such as shape and size in the ear parts. For the convenience of description, and in order to reduce (and thus eliminate) the individual differences of different users, based on the ANSI: S3.36, S3.25, and IEC: 60318-7 standards, a simulator including the head and its (left and right) ear parts, for example, GRAS 45BC KEMAR, HEAD Acoustics, B&K 4128 series, or B&K 5128 series can be manufactured, thereby showing a scenario in which most users normally wear the earphone 10. Taking GRAS KEMAR as an example, the ear part simulator of the ear may be any one of GRAS 45AC, GRAS 45BC, GRAS 45CC, or GRAS 43AG. Taking HEAD Acoustics as an example, the ear part simulator of the ear may be any one of HMS II.3, HMS II.3 LN, or HMS II.3LN HEC. Therefore, in this application, descriptions such as "the user is wearing the earphone", "the earphone is in a worn state", and "in a worn state" may refer to the earphone described in this application being worn on the ear part of the aforementioned simulator. Naturally, due to the existence of individual differences among different users, there may be a certain difference between the situation where the earphone is worn by different users and the situation where the earphone is worn on the ear part of the aforementioned simulator, but such differences should be allowed.

[0025] In the fields of medicine, anatomy, etc., three basic cutting planes of the human body, namely the Sagittal Plane, the Coronal Plane, and the Horizontal Plane, and three basic axes, namely the Sagittal Axis, the Coronal Axis, and the Vertical Axis, can be defined. The sagittal plane refers to a cutting plane perpendicular to the ground along the front-back direction of the body, which divides the human body into two left and right parts. The coronal plane refers to a cutting plane perpendicular to the ground along the left-right direction of the body, which divides the human body into two front and back parts. The horizontal plane refers to a cutting plane parallel to the ground along the up-down direction of the body, which divides the human body into two up and down parts. Accordingly, the sagittal axis refers to an axis perpendicular to the coronal plane along the front-back direction of the body, the coronal axis refers to an axis perpendicular to the sagittal plane along the left-right direction of the body, and the vertical axis refers to an axis perpendicular to the horizontal plane along the up-down direction of the body. Furthermore, the "front side of the ear part" described in the present application is a concept relative to the "rear side of the ear part". The former refers to the side facing away from the head of the ear part, and the latter refers to the side facing the head of the ear part. Both of them are with respect to the user's ear part. When looking at the ear part of the simulator along the direction where the coronal axis of the human body is located, a schematic diagram of the front side contour of the ear part shown in FIG. 1 can be obtained.

[0026] Exemplarily, as shown in FIGS. 2 to 5, the earphone 10 may include a core module 11 and a hook-shaped structure 12 connected to the core module 11. The core module 11 is located on the front side of the ear part in the worn state, and at least a part of the hook-shaped structure 12 is located on the rear side of the ear part in the worn state. Thereby, the earphone 10 is hung on the ear part in the worn state. The core module 11 may have a connection end CE connected to the hook-shaped structure 12 and a free end FE not connected to the hook-shaped structure 12. Furthermore, the core module 11 may be installed so as not to block the ear canal in the worn state, whereby the earphone 10 becomes an "open-type earphone". Since there are individual differences among different users, when different users wear the earphone 10, the core module 11 may partially shield the ear canal, but the ear canal is not blocked.

[0027] To improve the stability of the earphone 10 in the worn state, the earphone 10 can use any one or a combination of the following methods. In Method 1, at least a part of the hook-shaped structure 12 is installed in an imitation structure that fits at least one of the rear side of the ear and the head to increase the contact area between the hook-shaped structure 12 and the ear and / or the head, thereby increasing the resistance to dropping off from the ear of the earphone 10. In Method 2, the hook-shaped structure 12 is installed in an elastic structure so that at least a part thereof has a certain amount of deformation in the worn state, and by increasing the positive pressure on the ear and / or the head by the hook-shaped structure 12, the resistance to dropping off from the ear of the earphone 10 is increased. In Method 3, the hook-shaped structure 12 is installed so that at least a part thereof abuts against the head in the worn state to form a reaction force for pressing the ear, and by pressing the core module 11 against the front side of the ear, the resistance to dropping off from the ear of the earphone 10 is increased. In Method 4, the core module 11 and the hook-shaped structure 12 are installed so as to sandwich physiological parts such as the region where the antihelix is located and the region where the concha cavity is located from both the front and rear sides of the ear in the worn state, thereby increasing the resistance to dropping off from the ear of the earphone 10. In Method 5, at least a part of the core module 11 or the auxiliary structure connected thereto is installed so as to enter physiological parts such as the concha cavity, the scaphoid fossa of the concha, the triangular fossa, and the cymba conchae, thereby increasing the resistance to dropping off from the ear of the earphone 10.

[0028] Exemplarily, as shown in FIG. 3, in the worn state, the free end FE of the core module 11 may enter the concha cavity. The core module 11 and the hook-shaped structure 12 may be installed so as to sandwich the aforementioned ear region from both the front and rear sides of the ear region corresponding to the concha cavity, thereby increasing the resistance to dropping off from the ear of the earphone 10 and further improving the stability of the earphone 10 in the worn state. For example, the free end FE is pressed into the concha cavity in the thickness direction X, and for another example, the free end FE abuts against the concha cavity in the length direction Y and the width direction Z.

[0029] In the worn state, in addition to entering the concha cavity, the free end FE of the core module 11 may be such that its orthographic projection fits within the antihelix, or may fit at a position on both the left and right sides of the head and on the front side of the ear in the sagittal axis of the human body. In other words, the hook-shaped structure 12 can support the core module 11 to be worn at a wearing position such as the concha cavity, the antihelix, and the front side of the ear.

[0030] Exemplarily, as shown in FIGS. 3 and 4, the core module 11 may have an inner surface IS facing the ear along the thickness direction X in the worn state, an outer surface OS facing away from the ear, and a connection surface connecting the inner surface IS and the outer surface OS. The thickness direction X may be defined as the direction in which the core module 11 approaches or moves away from the ear in the worn state. Further, at least a part of the aforementioned connection surface is located in the concha cavity in the worn state, forms a first contact area with the front side of the ear area, the hook-shaped structure 12 forms a second contact area with the rear side of the ear area in the worn state, and the aforementioned second contact area and the aforementioned first contact area at least partially overlap in the ear thickness direction of the ear area. In this way, not only can the core module 11 and the hook-shaped structure 12 sandwich the ear together from both the front and rear sides of the ear, but the formed clamping force mainly appears as compressive stress, which is advantageous for improving the stability and comfort of the earphone 10 in the worn state.

[0031] In the worn state, when viewed from the direction in which the coronal axis is located, the core module 11 may be installed in a shape such as a circle, an ellipse, a rounded square, or a rounded rectangle. When the core module 11 is installed in a shape such as a circle or an ellipse, the connection surface may be the arc-shaped side surface of the core module 11. When the core module 11 is installed in a shape such as a rounded square or a rounded rectangle, the connection surface may include a lower side surface LS, an upper side surface US, and a rear side surface RS, which will be described later. Further, the core module 11 may have a length direction Y and a width direction Z that are perpendicular to the thickness direction X and perpendicular to each other. The length direction Y may be defined as the direction in which the core module 11 approaches or moves away from the user's occipital region in the worn state, and the width direction Z may be defined as the direction in which the core module 11 approaches or moves away from the user's vertex in the worn state. Therefore, for the sake of convenience of explanation, in this embodiment, an example will be illustratively described in which the core module 11 is installed in a rounded rectangle. The length of the core module 11 in the length direction Y may be greater than the width of the core module 11 in the width direction Z.

[0032] Exemplarily, as shown in FIGS. 2, 3, and 5, in the worn state, when viewed from the direction in which the coronal axis of the human body is located, the connection end CE is closer to the vertex than the free end FE so that the free end FE enters the concha cavity. Based on this, the included angle between the length direction Y and the direction in which the sagittal axis of the human body is located may be 15° to 60°. If the above-mentioned included angle is too small, it is likely to cause the free end FE to be unable to enter the concha cavity and the sound emission hole 111a in the core module 11 to be too far away from the external auditory canal. If the above-mentioned included angle is too large, it is also likely to cause the free end FE to be unable to enter the concha cavity and the external auditory canal to be blocked by the core module 11. In other words, in this way, while enabling the free end FE to enter the concha cavity, the sound emission hole 111a in the core module 11 is made to have an appropriate distance from the external auditory canal, so that when the external auditory canal is not blocked, the user can hear more sound waves generated by the core module 11.

[0033] Exemplarily, as shown in FIG. 4, the orthographic projection of the hook-shaped structure 12 onto a reference plane (e.g., the XZ plane in FIG. 4) perpendicular to the longitudinal direction Y partially overlaps with the orthographic projection of the free end FE onto the same reference plane. The overlapping region formed by the orthographic projection of the hook-shaped structure 12 onto the aforementioned reference plane and the orthographic projection of the free end FE onto the same reference plane is located between the inner surface IS and the outer surface OS in the thickness direction X. In this way, not only can the core module 11 and the hook-shaped structure 12 sandwich the ear part together from both the front and rear sides of the ear part, but the formed clamping force mainly appears as compressive stress, which is advantageous for improving the stability and comfort in the wearing state of the earphone 10.

[0034] Furthermore, as shown in FIGS. 2, 4, 5, and 9, the hook-shaped structure 12 may include an elastic wire 121 connected to the core module 11 and a battery housing 123 connected to one end of the elastic wire 121 away from the core module 11. A battery 14 coupled to the core module 11 is installed in the battery housing 123, and the orthographic projection of the battery housing 123 onto the aforementioned reference plane partially overlaps with the orthographic projection of the free end FE onto the same reference plane. In this way, when the free end FE abuts against the concha cavity, the battery housing 123 can support the ear part from the rear side of the ear part, which is advantageous for improving the stability in the wearing state of the earphone 10. The battery housing 123 may include a lid case 1231 connected to the elastic wire 121 and a battery magazine 1232 connected to the lid case 1231, and the battery magazine 1232 and the lid case 1231 engage to form a cavity structure for accommodating the battery 14.

[0035] Exemplarily, as shown in FIG. 5, the core module 11 may have an upper surface US facing away from the ear canal along the width direction Z in the worn state, a lower surface LS facing the ear canal, and a rear surface RS connecting the upper surface US and the lower surface LS. The rear surface RS is located at one end facing the occipital region in the length direction Y in the worn state, and at least a part thereof is located in the concha cavity. The edge of the hook-shaped structure 12 facing the core module 11 in the positive projection onto a reference plane perpendicular to the thickness direction X (for example, the YZ plane in FIG. 5) may be divided into a first segment S1 and a second segment S2 that are continuously arcuate and transition. The boundary point DP between the first segment S1 and the second segment S2 is the position where the aforementioned edge is farthest from the upper surface US along the width direction Z. Furthermore, the overall degree of curvature in the first segment S1 of the hook-shaped structure 12 is greater than the overall degree of curvature in the second segment S2 of the hook-shaped structure 12. In this way, the free end FE can enter the concha cavity, and the hook-shaped structure 12 can cooperate with the core module 11 to provide an appropriate clamping force.

[0036] Note that the above overall degree of curvature can qualitatively describe the degree of curvature of different segments of the hook-shaped structure 12. The radius of curvature of each segment may be a constant value or may change continuously. Therefore, there is at least one point in the first segment S1 that is smaller than the radius of curvature of any point in the second segment S2. Furthermore, the above overall degree of curvature can also be quantitatively characterized by the average radius of curvature, that is, first, the radius of curvature of N points in each segment is obtained and then the average value is taken.

[0037] Furthermore, in the extending direction of the hook-shaped structure 12, the length of the second segment S2 may be greater than the length of the first segment S1 so that the hook-shaped structure 12 clamps the ear together with the core module 11 and increases the area of contact between the hook-shaped structure 12 and the user's skin, which is advantageous for improving the stability of the earphone 10 in the worn state.

[0038] In some embodiments, the earphone 10 has a first reference line segment RL1 parallel to the width direction Z. The starting point of the first reference line segment RL1 is the point where the first reference line segment RL1 intersects the upper surface US, and the ending point is the boundary point DP. The second reference line segment RL2, the third reference line segment RL3, and the fourth reference line segment RL4, which will be described later, are sequentially separated from the starting point of the first reference line segment RL1 in the width direction Z. Further, the length of the first reference line segment RL1 may be 13 mm to 20 mm. If the length of the first reference line segment RL1 is too small, it is likely to cause that the free end FE cannot enter the concha cavity and the sound emission hole 111a in the core module 11 is too far from the external auditory canal. If the length of the first reference line segment RL1 is too large, it is also likely to cause that the free end FE cannot enter the concha cavity and the external auditory canal is blocked by the core module 11. In other words, in this way, while enabling the free end FE to enter the concha cavity, the sound emission hole 111a in the core module 11 has an appropriate distance from the external auditory canal, so that when the external auditory canal is not blocked, the user can hear more sound waves generated by the core module 11.

[0039] Furthermore, a second reference line segment RL2 that passes through the quarter point of the first reference line segment RL1 and is parallel to the longitudinal direction Y intersects the first segment S1 and the second segment S2 at a first intersection point P1 and a second intersection point P2, respectively. The distance between the first intersection point P1 and the starting point of the first reference line segment RL1 may be 9 mm to 15 mm, and the distance between the second intersection point P2 and the starting point of the first reference line segment RL1 may be 12 mm to 19 mm. A third reference line segment RL3 that passes through the midpoint of the first reference line segment RL1 and is parallel to the longitudinal direction Y intersects the first segment S1 and the second segment S2 at a third intersection point P3 and a fourth intersection point P4, respectively. The distance between the third intersection point P3 and the starting point of the first reference line segment RL1 may be 11 mm to 18 mm, and the distance between the fourth intersection point P4 and the starting point of the first reference line segment RL1 may be 12 mm to 19 mm. A fourth reference line segment RL4 that passes through the three-quarter point of the first reference line segment RL1 and is parallel to the longitudinal direction Y intersects the first segment S1 and the second segment S2 at a fifth intersection point P5 and a sixth intersection point P6, respectively. The distance between the fifth intersection point P5 and the starting point of the first reference line segment RL1 may be 12 mm to 19 mm, and the distance between the sixth intersection point P6 and the starting point of the first reference line segment RL1 may be 12 mm to 19 mm. In this way, when the free end FE enters the concha cavity and the sound-emitting hole 111a in the core module 11 has an appropriate distance from the external auditory canal, the hook-shaped structure 12 fits better on the ear.

[0040] In some embodiments, there is a fifth reference line segment RL5 having the shortest distance along the longitudinal direction Y between the second segment S2 and the rear side surface RS, and the length of the fifth reference line segment RL5 may be 2 mm to 3 mm. If the length of the fifth reference line segment RL5 is too small, the clamping force on the ear by the core module 11 and the hook-shaped structure 12 is too large, which easily causes discomfort during wearing. If the length of the fifth reference line segment RL5 is too large, the clamping force on the ear by the core module 11 and the hook-shaped structure 12 is too small, which easily causes instability during wearing. In other words, in this way, the stability and comfort of the earphone 10 during wearing are made compatible.

[0041] Furthermore, a fifth reference line segment RL5 is defined as follows. The point where the fifth reference line segment RL5 intersects the rear surface RS is taken as the starting point of the fifth reference line segment RL5, and the point where the fifth reference line segment RL5 intersects the second segment S2 is taken as the ending point of the fifth reference line segment RL5. The orthogonal projection along the longitudinal direction Y of the intersection point of the first reference line segment RL1 and the upper surface US intersects the second segment S2 at the seventh intersection point P7, and the orthogonal projection along the longitudinal direction Y of the intersection point of the extension line of the first reference line segment RL1 and the lower surface LS intersects the second segment S2 at the eighth intersection point P8. The distance between the seventh intersection point P7 and the starting point of the fifth reference line segment RL5 may be 5 mm to 9 mm, and the distance between the eighth intersection point P8 and the starting point of the fifth reference line segment RL5 may be 5 mm to 9 mm. In this way, when both the stability and comfort in the worn state of the earphone 10 are achieved, the hook-shaped structure 12 fits better to the ear.

[0042] Exemplarily, as shown in FIGS. 7, 8, and 5, the core module 11 may include a core housing 111 connected to the hook-shaped structure 12 and a speaker 112 installed in the core housing 111. On the inner surface (e.g., the inner surface IS) facing the ear in the worn state of the core housing 111, a sound emission hole 111a is installed, and the sound wave generated by the speaker 112 is propagated through the sound emission hole 111a to the external auditory canal. Note that the sound emission hole 111a may be installed on the side corresponding to the lower surface LS of the core housing 111, or may be installed at the corner between the aforementioned inner surface and the lower surface LS. Furthermore, the speaker 112 may include a magnetic circuit system, a voice coil entering the magnetic circuit system, and a diaphragm connected to the voice coil. When the voice coil is energized, the magnetic field generated after that and the magnetic field formed by the magnetic circuit system act on each other, causing the diaphragm to generate mechanical vibrations, and further generating sound through the propagation of a medium such as air.

[0043] Furthermore, as shown in FIGS. 7 to 9, the earphone 10 may include a main control circuit board 13 installed in the core housing 111 and a battery 14 installed at one end of the core module 11 away from the hook-shaped structure 12. The battery 14 and the speaker 112 are respectively coupled to the main control circuit board 13, and the battery 14 can supply power to the speaker 112 under the control of the main control circuit board 13. Of course, both the battery 14 and the speaker 112 may be installed in the core housing 111. The battery 14 may be closer to the connection end CE, and the speaker 112 may be closer to the free end FE.

[0044] Exemplarily, as shown in FIGS. 3 and 1, since the concha cavity has a certain volume and depth, after the free end FE enters the concha cavity, a certain interval can be provided between the inner surface IS of the core housing 111 and the concha cavity. In other words, the core module 11 can form an auxiliary cavity that engages with the concha cavity in the worn state and communicates with the external auditory canal, and at least a part of the sound emission hole 111a is located in the aforementioned auxiliary cavity. Thus, in the worn state, the sound wave generated by the speaker 112 and propagated through the sound emission hole 111a is restricted by the aforementioned auxiliary cavity. That is, the aforementioned auxiliary cavity can propagate more sound waves into the external auditory canal by converging the sound waves, thereby increasing the volume of the voice audible in the near field of the user and improving the sound quality. Thus, it is advantageous for improving the acoustic effect of the earphone 10. Further, since the core module 11 may be installed so as not to block the external auditory canal in the worn state, the aforementioned auxiliary cavity may be installed in a semi-open type. Thus, most of the sound waves generated by the speaker 112 and propagated through the sound emission hole 111a are propagated to the external auditory canal, and a part thereof is propagated to the outside of the earphone 10 and the ear through the gap between the core module 11 and the ear part (for example, the part not covered by the core module 11 in the concha cavity), thereby generating a first sound leakage in the far field. At the same time, an acoustic hole (for example, a decompression hole 111c described later) is generally formed in the core module 11, and the sound wave propagated through the aforementioned acoustic hole generally generates a second sound leakage in the far field. Since the phase of the aforementioned first sound leakage and the phase (proximity) of the aforementioned second sound leakage are opposite to each other, the two can be canceled out in the far field in opposite phases. Thus, it is advantageous for reducing the sound leakage of the earphone 10 in the far field.

[0045] Furthermore, the earphone 10 may include an adjustment mechanism for connecting the core module 11 and the hook-shaped structure 12. For each user, in the worn state, the adjustment mechanism can adjust the relative position of the core module 11 at the ear part, so that the core module 11 can be positioned at an appropriate position, whereby the core module 11 and the concha cavity form the auxiliary cavity. In addition to this, due to the presence of the adjustment mechanism, the user can also adjust the earphone 10 to be worn at a more stable and comfortable position.

[0046] Exemplarily, as shown in FIG. 6, first, the earphone 10 is worn on the simulator, and then the position of the core module 11 at the ear part of the simulator is adjusted. Next, the frequency response curve of the earphone 10 is measured by a detector (for example, a microphone) installed in the external auditory canal of the simulator (for example, the position of the eardrum, that is, the listening position), so as to simulate the listening effect after the user wears the earphone 10. The aforementioned frequency response curve can characterize the change relationship between the magnitude of vibration and the frequency. The abscissa of the aforementioned frequency response curve can represent the frequency, and the unit is Hz. The ordinate of the aforementioned frequency response curve can represent the magnitude of vibration, and the unit is dB. In FIG. 6, the curve 6_1 represents the frequency response curve when the core module 11 does not form the auxiliary cavity with the concha cavity in the worn state, and the curve 6_2 can represent the frequency response curve when the core module 11 engages with the concha cavity in the worn state to form the auxiliary cavity. Based on this, from the comparison diagram of the frequency response curves shown in FIG. 6, the curve 6_2 is located above the curve 6_1 as a whole. That is, compared with the case where the core module 11 does not form the auxiliary cavity with the concha cavity in the worn state, the fact that the core module 11 forms the auxiliary cavity with the concha cavity in the worn state is directly and unambiguously beneficial to the improvement of the acoustic effect of the earphone 10.

[0047] Exemplarily, as shown in FIGS. 7, 9, and 11, the core module 11 may include a flexible fitting block 1131 installed outside the core housing 111, and the hardness of the flexible fitting block 1131 is smaller than that of the core housing 111. The core housing 111 may be a plastic component, and the material of the flexible fitting block 1131 may be silicone rubber, rubber, etc., and may be formed in a predetermined region of the core housing 111 by injection molding. Further, the flexible fitting block 1131 can at least partially cover a region corresponding to the free end FE of the core housing 111 such that at least a part of the core module 11 abuts against the concha cavity through the flexible fitting block 1131. In other words, the portion where the core housing 111 enters the concha cavity and contacts the concha cavity may be covered by the flexible fitting block 1131. Thus, when the core module 11 abuts against the concha cavity, for example, when the core module 11 and the hook-shaped structure 12 are installed so as to sandwich the aforementioned ear region from both the front and rear sides of the ear region corresponding to the concha cavity of the ear, the flexible fitting block 1131 exerts a buffering effect between the core housing 111 and the ear (for example, the aforementioned ear region), alleviates the pressure of the earphone 10 on the ear, and is advantageous for improving the comfort of the earphone 10 in the worn state.

[0048] Exemplarily, the flexible fitting block 1131 may be continuously covered on at least a partial region corresponding to the rear side surface RS, the upper side surface US, and the lower side surface LS of the core housing 111. For example, the region corresponding to the rear side surface RS of the core housing 111 is covered by the flexible fitting block 1131 by more than 90%, and the regions corresponding to the upper side surface US and the lower side surface LS of the core housing 111 are each covered by the flexible fitting block 1131 by about 30%. In this way, the comfort of the earphone 10 in the worn state and the need to install structural members such as the speaker 112 in the core housing 111 are made compatible.

[0049] In some embodiments, when viewed in the thickness direction X, the flexible fitting block 1131 may be installed in a U shape.

[0050] In some embodiments, the portion corresponding to the lower surface LS of the flexible fitting block 1131 may abut against the counter beads. The thickness of the portion corresponding to the rear side surface RS of the flexible fitting block 1131 may be smaller than the thicknesses of the portions corresponding to the upper surface US and the lower surface LS of the flexible fitting block 1131, respectively, so that good comfort can be obtained even when the core module 11 abuts against a non-flat position in the concha cavity.

[0051] Exemplarily, as shown in FIGS. 7 and 8, the core housing 111 may include an inner core housing 1111 and an outer core housing 1112 that engage with each other along the thickness direction X. The inner core housing 1111 is closer to the ear part than the outer core housing 1112 in the worn state. The parting surface 111b between the outer core housing 1112 and the inner core housing 1111 is inclined toward the side where the inner core housing 1111 is located in the direction close to the free end FE, so that the flexible fitting block 1131 can be installed in the region corresponding to the free end FE of the outer core housing 1112 as much as possible. For example, as shown in FIG. 11, the flexible fitting block 1131 is generally installed in the region corresponding to the free end FE of the outer core housing 1112, simplifying the structure of the core module 11 and reducing the processing cost.

[0052] Exemplarily, as shown in FIGS. 7, 8, and 11, the core module 11 may include a flexible coating layer 1132, and the hardness of the flexible coating layer 1132 is smaller than the hardness of the core housing 111. The core housing 111 may be a plastic component, and the material of the flexible coating layer 1132 may be silicone rubber, rubber, etc., and may be formed in a predetermined region of the core housing 111 by methods such as injection molding and adhesive connection. Further, the flexible coating layer 1132 may integrally cover at least a part of the outer surface of at least a part of the flexible fitting block 1131 and the outer surface of at least a part of the external core housing 1112 that is not covered by the flexible fitting block 1131. In this way, it is advantageous to improve the sense of unity in the appearance of the core module 11. Naturally, the flexible coating layer 1132 may further cover the outer surface of the internal core housing 1111. The hardness of the flexible fitting block 1131 is smaller than the hardness of the flexible coating layer 1132 so as to be sufficiently soft. In addition to this, the flexible coating layer 1132 can improve the comfort in the wearing state of the earphone 10 and has a certain structural strength to protect the flexible fitting block 1131. Further, the area of the outer surface of the flexible fitting block 1131 may be 126 mm 2 ~189 mm 2 . If the above-mentioned area is too small, it is likely to cause deterioration of the comfort in the wearing state of the core module 11. If the above-mentioned area is too large, it is likely to cause the core module 11 to be too large in volume, and the area where the flexible fitting block 1131 does not contact the concha cavity is too large, so that the original purpose of installing the flexible fitting block 1131 cannot be achieved. Further, the thickness of the flexible coating layer 1132 is smaller than the thickness of the external core housing 1112.

[0053] Exemplarily, as shown in FIGS. 11 and 9, the core module 11 may include metal function patterns such as an antenna pattern 1141 and / or a touch pattern 1142 installed between an external core housing 1112 and a flexible coating layer 1132. The antenna pattern 1141 may be formed on the outside of the external core housing 1112 by laser direct structuring technology (LDS), the touch pattern 1142 may be formed on the outside of the external core housing 1112 by laser direct structuring technology, or it may be a flexible touch circuit board attached to the outside of the external core housing 1112. Further, the external core housing 1112 is provided with plated through holes respectively connected to the antenna pattern 1141 and the touch pattern 1142. In this case, the main control circuit board 13 is installed in the core housing 111. For example, since the main control circuit board 13 is connected to the external core housing 1112, the main control circuit board 13 can contact the inner wall of the corresponding plated through hole via an elastic metal member such as a pogo-PIN or a metal dome. For example, the antenna pattern 1141 and the touch pattern 1142 are respectively connected to a pogo-PIN 131 and a pogo-PIN 132 welded to the main control circuit board 13. Accordingly, the speaker 112 is located on the side of the main control circuit board 13 facing away from the external core housing 1112. In this way, compared to the antenna pattern 1141 and the touch pattern 1142 being respectively installed on the inner side of the external core housing 1112 facing the speaker 112, the installation of the antenna pattern 1141 on the outside of the external core housing 1112 increases the distance from the main control circuit board 13, that is, increases the antenna clearance area, thereby improving the interference resistance of the antenna pattern 1141. The installation of the touch pattern 1142 on the outside of the external core housing 1112 can shorten the distance from an external signal trigger source (e.g., the user's finger), that is, by reducing the touch interval, the sensitivity of the touch pattern 1142 triggered by the user can be improved.

[0054] In some embodiments, the antenna pattern 1141 may surround the outer periphery of the touch pattern 1142 so as to fully utilize the space outside the external core housing 1112. The antenna pattern 1141 may be installed in a U shape, and the touch pattern 1142 may be installed in a square shape.

[0055] Furthermore, the core module 11 may include a microphone 133 welded to the main control circuit board 13. The microphone 133 can pick up user voices and environmental sounds through a sound collection hole installed in the external core housing 1112. When the main control circuit board 13 is connected to the external core housing 1112, the microphone 133 can be further pressed against the external core housing 1112.

[0056] Exemplarily, as shown in FIGS. 10 and 11, the internal core housing 1111 may include a bottom wall 1113 and a first side wall 1114 connected to the bottom wall 1113. The external core housing 1112 may include a top wall 1115 and a second side wall 1116 connected to the top wall 1115. The second side wall 1116 and the first side wall 1114 may be engaged with each other along the parting surface 111b, and they may support each other. When viewed in the width direction Z, in the reference direction (for example, the reverse direction of the arrow Y in FIGS. 10 and 11) pointing from the connection end CE to the free end FE, the portion close to the free end FE of the first side wall 1114 gradually approaches the bottom wall 1113 in the thickness direction X, and the portion close to the free end FE of the second side wall 1116 gradually moves away from the top wall 1115 in the thickness direction X, whereby the parting surface 111b is inclined toward the side where the internal core housing 1111 is located in the direction approaching the free end FE. In this case, at least a part of the flexible fitting block 1131 is installed outside the second side wall 1116. For example, as shown in FIGS. 11 and 9, in addition to being installed outside the second side wall 1116, a part of the flexible fitting block 1131 is installed outside the top wall 1115. Accordingly, the sound emission hole 111a may be installed in the bottom wall 1113. Naturally, the sound emission hole 111a may also be installed on the side corresponding to the lower surface LS of the first side wall 1114, or may be installed at the corner between the first side wall 1114 and the bottom wall 1113. Further, the antenna pattern 1141, the touch pattern 1142, and their respective plating through holes may be installed on the top wall 1115, and the sound collection hole of the microphone 133 may also be installed on the top wall 1115.

[0057] Exemplarily, as shown in FIGS. 7 and 11, the external core housing 1112 may be provided with a fitting groove that is at least partially located in the second side wall 1116. By fitting the flexible fitting block 1131 into the aforementioned fitting groove, the outer surface of the region not covered by the flexible fitting block 1131 of the external core housing 1112 and the outer surface of the flexible fitting block 1131 transition continuously. The region where the flexible fitting block 1131 is located in FIG. 7 can be easily regarded as the aforementioned fitting groove. In this way, not only is it advantageous to avoid the flexible fitting block 1131 from overflowing when it accumulates on the external core housing 1112 during the injection molding process, but it is also advantageous to improve the appearance quality of the core module 11 and ensure that there are no depressions on the surface of the core module 11.

[0058] Furthermore, the second side wall 1116 may include a first sub-side wall portion 1117 and a second sub-side wall portion 1118 connected to the first sub-side wall portion 1117. The first sub-side wall portion 1117 is closer to the top wall 1115 than the second sub-side wall portion 1118 in the thickness direction X, and the second sub-side wall portion 1118 protrudes outward from the core housing 111 more than the first sub-side wall portion 1117. In short, the second side wall 1116 may have a stepped structure. In this way, not only is it advantageous to avoid the flexible fitting block 1131 from overflowing when it accumulates on the external core housing 1112 during the injection molding process, but it is also advantageous to improve the comfort of the earphone 10 in the wearing state by allowing the core module 11 to abut better against the concha cavity through the flexible fitting block 1131.

[0059] Furthermore, the main control circuit board 13 is connected to the external core housing 1112, and for example, it may be fixed to a hot melt post connected to the top wall 1115, may partially overlap with the first sub-side wall portion 1117 in the thickness direction X, and the speaker 112 may partially overlap with the second sub-side wall portion 1118 in the thickness direction X. In this way, it is advantageous to install a sufficiently large speaker 112 in the core housing 111, thereby increasing the volume of the sound generated by the earphone 10.

[0060] Exemplarily, as shown in FIGS. 10 and 8, a decompression hole 111c may be provided in the core housing 111. The decompression hole 111c communicates the space on the side facing the main control circuit board 13 of the speaker 112 with the external environment, that is, air can freely enter and exit the aforementioned space. In this way, it is advantageous to reduce the resistance in the vibration process of the diaphragm of the speaker 112. The decompression hole 111c can be directed towards the top of the head in the worn state, and it is advantageous to avoid the sound wave propagated through the decompression hole 111c from being heard as sound leakage (i.e., the second sound leakage). Based on the Helmholtz resonance cavity, by making the aperture diameter of the decompression hole 111c as large as possible, the resonance frequency of the second sound leakage can be shifted to a frequency band with a relatively high frequency (for example, a frequency range greater than 4 kHz) as much as possible. In this way, it is advantageous to prevent the second sound leakage from being heard.

[0061] Furthermore, a tuning hole 111d may be provided in the core housing 111. The tuning hole 111d is advantageously configured to shift the resonance frequency of the second sound leakage to a frequency band with a relatively high frequency (for example, a frequency range greater than 4 kHz) as much as possible, so that the second sound leakage is inaudible. The area of the tuning hole 111d may be smaller than the area of the pressure relief hole 111c, so that the space on the side facing the main control circuit board 13 of the speaker 112 communicates with the external environment through the pressure relief hole 111c as much as possible. Furthermore, the distance in the width direction Z between the sound emission hole 111a and the pressure relief hole 111c is greater than the distance in the width direction Z between the sound emission hole 111a and the tuning hole 111d, thereby avoiding the sound waves propagated through the sound emission hole 111a and the pressure relief hole 111c, respectively, from canceling each other out in the near field with opposite phases. Thus, it is advantageous to increase the volume of the sound propagated through the sound emission hole 111a that the user hears. Accordingly, by bringing the tuning hole 111d closer to the connection end CE than the sound emission hole 111a and increasing the distance between them in the longitudinal direction Y, the sound waves propagated through the sound emission hole 111a and the tuning hole 111d, respectively, are avoided from canceling each other out in the near field with opposite phases. Thus, it is advantageous to increase the volume of the sound propagated through the sound emission hole 111a that the user hears.

[0062] Exemplarily, as shown in FIG. 10, the sound emission hole 111a, the pressure relief hole 111c, and the tuning hole 111d may be provided in the internal core housing 1111. For example, the sound emission hole 111a may be provided in the bottom wall 1113, and the pressure relief hole 111c and the tuning hole 111d may be provided in the first side wall 1114, respectively. The pressure relief hole 111c and the tuning hole 111d may be provided on opposite sides in the width direction Z of the first side wall 1114, respectively. In this way, since the sound emission hole 111a, the pressure relief hole 111c, and the tuning hole 111d are all provided in the internal core housing 1111, the structure of the external core housing 1112 becomes simpler, which is advantageous for reducing the processing cost. In addition, since the pressure relief hole 111c and the tuning hole 111d are provided on opposite sides along the width direction Z of the first side wall 1114, respectively, the parting surface 111b can be symmetrically provided with respect to a reference plane perpendicular to the width direction Z. Thus, it is advantageous for improving the appearance quality of the core module 11.

[0063] Exemplarily, as shown in FIGS. 7 and 8, the core module 11 may include a bracket 115 installed in the core housing 111. The bracket 115 and the speaker 112 enclose an acoustic cavity 116, thereby separating the acoustic cavity 116 from other structures (such as the main control circuit board 13, etc.) within the core housing 111. In this way, it is advantageous for improving the acoustic expressiveness of the core module 11. An acoustic hole is installed in the core housing 111. For example, the acoustic hole is at least one of the decompression hole 111c and the tuning hole 111d. An acoustic passage 1151 communicating the acoustic hole and the acoustic cavity 116 is installed in the bracket 115. Thereby, the acoustic cavity 116 communicates with the external environment, that is, air can freely enter and exit the acoustic cavity 116. In this way, it is advantageous for reducing the resistance in the vibration process of the diaphragm of the speaker 112.

[0064] Furthermore, the bracket 115 engages with the core housing 111 to form a first adhesive receiving groove 1171 that surrounds at least a part of the acoustic hole. The first adhesive receiving groove 1171 houses a first adhesive that seals the assembly gap between the bracket 115 and the core housing 111. That is, waterproof sealing is performed by the first adhesive. In this way, it is advantageous to prevent external liquid droplets such as sweat and rainwater from entering the space where the main control circuit board 13 in the core housing 111 is located. In this way, based on the Helmholtz resonance cavity, compared with the related art where a silicone rubber sleeve is pressed against the core housing 111 through the bracket 115 for waterproof sealing, performing waterproof sealing with the first adhesive in this technical means can omit the aforementioned silicone rubber sleeve in the related art, which is advantageous for shortening the length of the communication part (including the acoustic passage 1151 and the acoustic hole) between the acoustic cavity 116 and the external environment. Thereby, the resonance frequency of the sound leakage (i.e., the second sound leakage) generated by propagating through the decompression hole 111c is shifted to a frequency band with a higher frequency as much as possible (for example, a frequency range greater than 4 kHz), further avoiding the audibility of the second sound leakage.

[0065] In addition, when the acoustic hole is the decompression hole 111c, the first adhesive accommodation groove 1171 surrounds at least a part of the decompression hole 111c. When the acoustic hole is the tuning hole 111d, the first adhesive accommodation groove 1171 surrounds at least a part of the tuning hole 111d. When the acoustic hole is the decompression hole 111c and the tuning hole 111d, the first adhesive accommodation groove 1171 surrounds at least a part of the decompression hole 111c and the tuning hole 111d respectively. For the sake of convenience of explanation, as shown in FIGS. 8, 10, and 12, in the present application, the acoustic hole is the decompression hole 111c and the tuning hole 111d, and the first adhesive accommodation groove 1171 surrounds at least a part of the decompression hole 111c and the tuning hole 111d respectively, which will be exemplified and explained. Further, when the gap between the bracket 115 and the core housing 111 (for example, its bottom wall 1113) is sufficiently large, or when the bottom wall 1113 and the first side wall 1114 in the core housing 111 are not integrally formed structural members (that is, they are two separate structural members), the first adhesive accommodation groove 1171 may surround the entire acoustic hole, that is, the first adhesive accommodation groove 1171 has a complete annular structure.

[0066] Exemplarily, as shown in FIGS. 12 and 10, the bracket 115 may include an annular main body portion 1152 and an abutting portion 1153 connected to the annular main body portion 1152. The annular main body portion 1152 is fitted on the outer periphery of the speaker 112 to form an acoustic cavity 116, and the acoustic passage 1151 penetrates through the abutting portion 1153 and the annular main body portion 1152. Further, the abutting portion 1153 is located between the annular main body portion 1152 and the core housing 111, surrounds at least a part of the acoustic holes, and the abutting portion 1153 engages with the core housing 111 to form a first adhesive accommodation groove 1171. The acoustic holes may be a decompression hole 111c and a tuning hole 111d, whereby two abutting portions 1153 are provided accordingly, and two first adhesive accommodation grooves 1171 are also provided accordingly. Accordingly, the abutting portion 1153 engages with the first side wall 1114 to form a first adhesive accommodation groove 1171. In this way, since the bracket 115 is installed annularly, the side facing the main control circuit board 13 of the speaker 112 is exposed, and thus it is advantageous to reduce the thickness in the thickness direction X of the core module 11.

[0067] Exemplarily, as shown in FIGS. 10 and 8, a recessed area 1119 may be provided inside the core housing 111, the acoustic hole may be provided at the bottom of the recessed area 1119, the core module 11 may include an acoustic resistance mesh 118 installed in the recessed area 1119, and the butting portion 1153 presses the acoustic resistance mesh 118 against the bottom of the recessed area 1119. In this way, not only is it advantageous to avoid the bracket 115 being caught on the acoustic resistance mesh 118 during the assembly process, but it also reduces the assembly gap between the bracket 115, the acoustic resistance mesh 118 and the internal core housing 1111, which is advantageous for avoiding the acoustic resistance mesh 118 from shaking. The acoustic resistance mesh 118 may be pre-fixed to the bottom of the recessed area 1119 by a double-sided tape or an adhesive. The acoustic resistance mesh 118 may be pre-fixed to a metal protection mesh, and the aforementioned metal protection mesh is further pre-fixed to the bottom of the recessed area 1119 by a double-sided tape or an adhesive. Correspondingly, the acoustic holes may be decompression holes 111c and tuning holes 111d. Therefore, two recessed areas 1119 are provided accordingly, and two acoustic resistance meshes 118 are also provided accordingly.

[0068] Furthermore, the first adhesive may seal the assembly gap between the bracket 115 and the acoustic resistance mesh 118 and / or the assembly gap between the acoustic resistance mesh 118 and the core housing 111 (e.g., the side wall of the recessed area 1119). In this way, it is advantageous for further waterproof sealing.

[0069] Exemplarily, as shown in FIGS. 8, 10, and 12, the butting portion 1153 may form the bottom wall and one side groove wall of the first adhesive accommodation groove 1171, and the core housing 111 may form the other side groove wall of the first adhesive accommodation groove 1171. The groove wall in the core housing 111 and the groove wall in the butting portion 1153 are arranged to face each other so that the first adhesive accommodation groove 1171 has a certain width and depth. Naturally, the butting portion 1153 may form one side groove wall of the first adhesive accommodation groove 1171, and the core housing 111 may form the bottom wall and the other side groove wall of the first adhesive accommodation groove 1171, or the butting portion 1153 may form one side groove wall and a part of the bottom wall of the first adhesive accommodation groove 1171, and the core housing 111 may form the other side groove wall and the other part of the bottom wall of the first adhesive accommodation groove 1171.

[0070] Exemplarily, as shown in FIGS. 12 to 14, the speaker 112 may include a main body 1121 and an annular support base 1122 installed along the circumferential direction of the main body 1121. The lower end of the bracket 115 may be supported by the annular support base 1122. The acoustic passage 1151 may be installed in an open type on the side facing the annular support base 1122, and the annular support base 1122 further closes the open portion of the acoustic passage 1151. In this case, it can be easily considered that the first adhesive accommodation groove 1171 surrounds a part of the acoustic hole so that the first adhesive accommodation groove 1171 is filled with an adhesive by a method such as an adhesive application process later.

[0071] In some embodiments, the annular support base 1122 may include a first annular mesa 1123 and a second annular mesa 1124 that are installed in a stepped manner. The second annular mesa 1124 is peripherally provided on the outer periphery of the first annular mesa 1123. A part of the lower end of the bracket 115 may be supported by the first annular mesa 1123, and another part may form a spacing region with the second annular mesa 1124. Thereby, the bracket 115, the annular support base 1122, and the core housing 111 are engaged to form a second adhesive receiving groove 1172. The second adhesive receiving groove 1172 houses a second adhesive that seals the assembly gap between any two of the bracket 115, the annular support base 1122, and the core housing 111 to perform corresponding waterproof sealing.

[0072] In some embodiments, the upper end of the bracket 115 may be hung on the main body 1121 and engaged with the main body 1121 to form a third adhesive receiving groove 1173. The third adhesive receiving groove 1173 houses a third adhesive that seals the assembly gap between the bracket 115 and the main body 1121 to perform corresponding waterproof sealing.

[0073] In the specific assembly process of the core module 11, the following process steps may be included. The sequence of all process steps can be adjusted as required. In step 1), the acoustic resistance mesh 118 is pre-fixed to the bottom of the concave region 1119 by a double-sided tape. In step 2), the speaker 112 is fixed to the bottom wall 1113, and an adhesive is applied to the assembly gap therebetween, and the corresponding adhesive accumulates on the second annular mesa 1124 of the speaker 112. In step 3), before the adhesive in step 2) cures, the bracket 115 is fixed to the speaker 112. The lower end of the bracket 115 is supported by the first annular mesa 1123 of the speaker 112, so that the gap between the lower end of the bracket 115 and the second annular mesa 1124 is also filled with the adhesive. The butting portion 1153 of the bracket 115 presses the acoustic resistance mesh 118 and engages with the first side wall 1114 to form the first adhesive accommodation groove 1171. The upper end of the bracket 115 is hung on the main body 1121 and engages with the main body 1121 to form the third adhesive accommodation groove 1173. In step 4), an adhesive is applied to the first adhesive accommodation groove 1171, the third adhesive accommodation groove 1173, and the assembly gap between the lower end of the bracket 115 and the speaker 112 and the internal core housing 1111. Since the assembly gap between the lower end of the bracket 115 and the speaker 112 and the internal core housing 1111 is very close to the first adhesive accommodation groove 1171, the assembly gap between the lower end of the bracket 115 and the speaker 112 and the internal core housing 1111 can be easily regarded as a continuation of the first adhesive accommodation groove 1171, that is, the first adhesive accommodation groove 1171 and the second adhesive accommodation groove 1172 can communicate with each other.

[0074] Exemplarily, as shown in FIGS. 15 to 18 and FIG. 7, the hook-shaped structure 12 may include an adapter housing 122 connected to the core module 11. An accommodation cavity 124 may be pre-formed in the adapter housing 122. The earphone 10 may include electronic components 15 that are subsequently mounted in the accommodation cavity 124. The connection method between the adapter housing 122 and the core module 11 may be one type or a combination of assembly methods such as locking, welding, adhesive connection, screwing connection, and screw connection. Thus, compared with the installation of the electronic components 15 in the core module 11 in the related art, the present technical means is not only advantageous in saving the space of the core module 11, making the structure more compact and smaller by mounting the electronic components 15 in the predetermined accommodation cavity 124 of the hook-shaped structure 12, but also advantageous in simplifying the structure of the core module 11, increasing its assembly efficiency, rationally laying out the relative positions of the structural members in the earphone 10, and fully utilizing both the core module 11 and the hook-shaped structure 12.

[0075] Note that the accommodation cavity 124 being pre-formed in the adapter housing 122 means that the accommodation cavity 124 is not formed by machining after the molding of the adapter housing 122, but may be formed simultaneously during the molding of the adapter housing 122. For example, the adapter housing 122 is a plastic housing, and by installing corresponding cores, the corresponding accommodation cavity 124 can be obtained after injection molding the plastic housing. Accordingly, the fact that the electronic component 15 is subsequently attached into the accommodation cavity 124 may mean that the electronic component 15 and the adapter housing 122 are not an integrally molded structural member. For example, the adapter housing 122 is a plastic housing, and the electronic component 15 is not integrally injection molded into the plastic housing by insert molding. Based on this, the description that through holes 1251, blind holes 1252, through holes 1253, etc. are pre-formed in the adapter housing 122 to be described later is the same or similar, so the description is omitted here. Naturally, the accommodation cavity 124 may be obtained by a drill process after molding the adapter housing 122, and the through holes 1251, blind holes 1252, through holes 1253, etc. may likewise be obtained by a drill process after molding the adapter housing 122.

[0076] Exemplarily, as shown in FIG. 7, the electronic component 15 can be coupled to the main control circuit board 13 to realize an electrical connection between the hook-shaped structure 12 and the core module 11. The adapter housing 122 can be inserted and fixed to the core housing 111, thereby realizing a structural connection between the hook-shaped structure 12 and the core module 11, which is simple and reliable. The aforementioned insertion and fixation may be such that one of the adapter housing 122 and the core housing 111 first partially enters the other along the assembly direction and then is inserted and fixed by another position-limiting structure such as a plug. The assembly direction of the aforementioned position-limiting structure is not parallel to the aforementioned assembly direction. The aforementioned insertion and fixation may also be such that one of the adapter housing 122 and the core housing 111 can be inserted and fixed without passing through the aforementioned position-limiting structure when one of them partially enters the other.

[0077] Exemplarily, as shown in FIGS. 7, 10, and 16, a first buckle structure 1221 may be provided on the adapter housing 122, and a second buckle structure 1222 may be provided on the core housing 111. The first buckle structure 1221 enters the core housing 111 and is locked with the second buckle structure 1222, whereby the adapter housing 122 and the core housing 111 are locked and fixed, and the two are directly inserted and fixed without passing through another position-limiting structure, which is simple and reliable. The first buckle structure 1221 may be integrally provided on the adapter housing 122, or two may be provided at intervals facing each other in the thickness direction X. The second buckle structure 1222 may be integrally provided on the internal core housing 1111 and may be provided in a one-to-one correspondence with the first buckle structure 1221.

[0078] Exemplarily, as shown in FIG. 7, the earphone 10 may include a flexible circuit board 16. At least a part of the flexible circuit board 16 is installed in the accommodation cavity 124 and connected to the electronic component 15, and extends into the core housing 111, whereby the electronic component 15 is connected to the main control circuit board 13 via the flexible circuit board 16. For example, the electronic component 15 is soldered to one end of the flexible circuit board 16 by Surface Mounted Technology (SMT). The other end of the circuit board of the flexible circuit board 16 is engaged with the main control circuit board 13 by a BTB connector. The speaker 112 may be installed to be connected to the flexible circuit board 16 in the extending path of the flexible circuit board 16. For example, the lead wire of the speaker 112 is soldered to the corresponding area of the flexible circuit board 16, whereby the speaker 112 is also connected to the main control circuit board 13 via the flexible circuit board 16. The lead wire of the speaker 112 does not need to be extended until it is connected to the main control circuit board 13. In this way, it is advantageous for simplifying the wiring structure of the earphone 10 and reducing the production cost.

[0079] Exemplarily, as shown in FIGS. 16 and 15, the adapter housing 122 may be pre-formed with a through hole 1251 communicating with the accommodation cavity 124. The electronic component 15 may include electrode terminals 151 at least a part of which is installed in the through hole 1251. The electrode terminals 151 may be a stretchable elastic member such as a pogo - PIN, or may be a non - stretchable rigid member such as a metal post. The aperture diameter of the through hole 1251 may be larger than the outer diameter of the electrode terminal 151 for attaching the electrode terminal 151 subsequently. Naturally, the electrode terminals 151 may be integrally formed with the adapter housing 122 by insert molding. Further, the electrode terminals 151 can be made invisible in the worn state toward the ear part in the worn state. In this way, it is advantageous for improving the appearance quality of the earphone 10 in the worn state.

[0080] In addition, when the electrode terminal 151 is installed as a stretchable elastic member such as a pogo - PIN, the extending direction of the electrode terminal 151 may be its stretching direction. When the electrode terminal 151 is installed as a non - stretchable rigid member such as a metal post, the extending direction of the electrode terminal 151 may be the direction in which its axis is located.

[0081] Furthermore, a plurality of electrode terminals 151 may be installed according to actual usage needs. For example, they may be used for charging, detection, etc.

[0082] In some embodiments, the electrode terminal 151 may include a charging positive electrode terminal 1511 and a charging negative electrode terminal 1512 that are installed at intervals from each other. The charging positive electrode terminal 1511 and the charging negative electrode terminal 1512 may be correspondingly installed in their respective through - holes 1251 so as to charge the earphone 10 through the electrode terminal 151. Naturally, only one of the charging positive electrode terminal 1511 and the charging negative electrode terminal 1512 may be installed on the adapter housing 122, and the other may be installed on another housing such as the battery housing 123 in the hook - shaped structure 12, or may be installed on the internal core housing 1111.

[0083] In some embodiments, the electrode terminal 151 may include a detection terminal 1513 that is installed at intervals from the charging positive electrode terminal 1511 and the charging negative electrode terminal 1512. The detection terminal 1513 may perform detection functions such as charging detection and detection of insertion and removal of the earphone 10 into and out of the charging case. Naturally, the detection terminal 1513 may be replaced by an electronic component such as a hall sensor.

[0084] In some embodiments, when viewed from the extending direction of the electrode terminal 151, the lines connecting two of the charging positive electrode terminal 1511, the charging negative electrode terminal 1512, and the detection terminal 1513 can form a triangle, for example, an equilateral triangle.

[0085] In some embodiments, when viewed from the extending direction of the electrode terminal 151, the charging positive electrode terminal 1511, the charging negative electrode terminal 1512, and the detection terminal 1513 may be arranged at intervals from each other in a line segment, for example, in a straight line. The interval between the charging positive electrode terminal 1511 and the charging negative electrode terminal 1512 may be larger than the interval between the charging negative electrode terminal 1512 and the detection terminal 1513. For example, the charging negative electrode terminal 1512 may be located between the charging positive electrode terminal 1511 and the detection terminal 1513, and the interval between the charging positive electrode terminal 1511 and the charging negative electrode terminal 1512 is larger than the interval between the charging negative electrode terminal 1512 and the detection terminal 1513. Also, for example, the detection terminal 1513 may be located between the charging positive electrode terminal 1511 and the charging negative electrode terminal 1512. In this way, when the space for installing the electrode terminal 151 in the adapter housing 122 is limited, it is advantageous to avoid the short circuit between the two by increasing the interval between the charging positive electrode terminal 1511 and the charging negative electrode terminal 1512 as much as possible.

[0086] Exemplarily, as shown in FIG. 15, a boss 126 may be installed outside the adapter housing 122, and the through hole 1251 further penetrates the boss 126 to expose the plurality of electrode terminals 151 to the boss 126 respectively. In this way, due to the boss 126, the adapter housing 122 has a certain radian, so that the non-flat part becomes flat, facilitating the installation of the electrode terminal 151. The charging positive electrode terminal 1511, the charging negative electrode terminal 1512, and the detection terminal 1513 may be installed at intervals in sequence along the length direction of the boss 126.

[0087] Exemplarily, as shown in FIGS. 15 to 17, the hook-shaped structure 12 may include a magnet 127, and the magnet 127 and the electrode terminal 151 may be exposed on the same side of the adapter housing 122, that is, both of them can be seen on the surface of the same side of the adapter housing 122, and the magnet 127 is closer to the outside towards the exposed end of the electrode terminal 151, whereby the distance between the magnet 127 and the magnetic attraction structure cooperating with the magnet 127 in a charging device such as a charging case or the distance between the magnet 127 and the hall sensor cooperating with the magnet 127 is shortened. Thus, it is advantageous for improving the reliability of functions such as charging and detection. The magnet 127 and the electrode terminal 151 may be installed adjacent to each other, so that the magnet 127 can cooperate with the magnetic attraction structure in a charging device such as a charging case, and the electrode terminal 151 can cooperate with the electrode terminal in the charging device to facilitate charging. Accordingly, the boss 126 may protrude from the adapter housing 122 around the magnet 127 so that the electrode terminal 151 contacts the electrode terminal in a charging device such as a charging case, that is, the magnet 127 may be lower than the boss 126. Naturally, in an embodiment where the magnet 127 cooperates with a hall sensor in a charging device such as a charging case for detection, the magnet 127 is installed adjacent to the electrode terminal 151, and the electrode terminal cooperating with the electrode terminal 151 in a charging device such as a charging case may be installed adjacent to the aforementioned hall sensor. Thus, it is advantageous for reducing the area for mounting the aforementioned electrode terminal and the aforementioned hall sensor in a charging device such as a charging case.

[0088] Furthermore, the hook-shaped structure 12 may include a flexible coating layer 128, and the hardness of the flexible coating layer 128 is smaller than that of the adapter housing 122. The adapter housing 122 may be a plastic component, and the material of the flexible coating layer 128 may be silicone rubber, rubber, etc., and may be formed on the adapter housing 122 by methods such as injection molding and adhesive connection. Furthermore, the flexible coating layer 128 may cover the adapter housing 122 and the magnet 127 such that the magnet 127 is not exposed and the electrode terminal 151 is exposed, that is, the magnet 127 is not visible and the electrode terminal 151 is visible. In this way, while meeting the usage needs of the electrode terminal 151, the magnet 127 can be shielded, and wear caused by its exposure and the impact on the appearance quality can be avoided. In addition to this, the flexible coating layer 128 is also advantageous for improving the comfort in the wearing state of the earphone 10. The thickness of the flexible coating layer 128 is smaller than the thickness of the adapter housing 122.

[0089] Exemplarily, as shown in FIG. 16, in order to improve the waterproof and dustproof performance of the accommodation cavity 124, a blind hole 1252 that does not communicate with the accommodation cavity 124 may be pre-formed in the adapter housing 122. The magnet 127 may be installed at least within the blind hole 1252 and may be exposed through the open end of the blind hole 1252. In this way, it is not only advantageous for reducing the thickness of the region of the adapter housing 122 where the magnet 127 is located, but also advantageous for improving the appearance quality of the region of the earphone 10 where the magnet 127 is located. Naturally, the blind hole 1252 may be installed as a through hole.

[0090] Exemplarily, as shown in FIG. 15, when viewed from the extending direction of the electrode terminals 151, the plurality of electrode terminals 151 may be arranged at intervals from each other in a line segment, for example, a straight line or a broken line. The magnet 127 may be located on any one side of the aforementioned line segment, or the magnet 127 may intersect the aforementioned line segment and at least a part thereof may be located between any two adjacent electrode terminals 151. For example, the number of magnets 127 is one, and the magnet 127 is entirely located on one side of the aforementioned line segment, or intersects the aforementioned line segment and is entirely located between any two adjacent electrode terminals 151. Also, for example, the number of magnets 127 is two, one magnet 127 is entirely located on one side of the aforementioned line segment, and the other magnet 127 is entirely located on the other side of the aforementioned line segment. Further, for example, the number of magnets 127 is one, a part of the magnet 127 intersects the aforementioned line segment and is located between any two adjacent electrode terminals 151, and the other part is located below the electrode terminal 151 in the aforementioned extending direction.

[0091] Exemplarily, as shown in FIG. 15, the plurality of electrode terminals 151 may include a charging positive electrode terminal 1511, a charging negative electrode terminal 1512, and a detection terminal 1513 arranged in a straight line. The magnet 127 may be located on one side of the aforementioned straight line. Further, when viewed from the extending direction of the electrode terminals 151, there are a first distance, a second distance, and a third distance respectively between the center of the magnet 127 and the centers of the charging positive electrode terminal 1511, the charging negative electrode terminal 1512, and the detection terminal 1513, and the third distance is larger than the first distance and the second distance respectively, and the reliability of charging is preferentially ensured. In an embodiment where the flexible coating layer 128 is installed on the hook-shaped structure 12, in order to facilitate the determination of the relative positional relationship among the magnet 127, the charging positive electrode terminal 1511, the charging negative electrode terminal 1512, and the detection terminal 1513, the flexible coating layer 128 may be removed first.

[0092] Exemplarily, as shown in FIGS. 16 to 18, the electronic component 15 may include an electrode terminal 151 and a microphone 152. In the adapter housing 122, a receiving cavity 124, a through hole 1251 and a through hole 1253 respectively communicating with the receiving cavity 124 may be formed in advance. Since the functions of the electrode terminal 151 and the microphone 152 are different, the through hole 1251 and the through hole 1253 may be located on different side walls of the adapter housing 122. Based on this, at least a part of the electrode terminal 151 may be installed in the through hole 1251, and the microphone 152 may be installed in the receiving cavity 124, and pick up sounds outside the earphone 10 (for example, user voice, environmental sound) through the through hole 1253. In this way, by reasonably arranging the relative positions of the electrode terminal 151 and the microphone 152, the space of the receiving cavity 124 can be fully utilized, and the structure of the earphone 10 can be made more compact and smaller. Further, the earphone 10 may include a support assembly 17 at least partially installed in the receiving cavity 124, and the support assembly 17 can support and fix the electrode terminal 151 and the microphone 152 to the side walls corresponding to the through hole 1251 and the through hole 1253 respectively. In this way, it is not only advantageous to avoid the separation of the electrode terminal 151 and the microphone 152 from the adapter housing 122, but also advantageous to improve the waterproof and dustproof performance of the electronic component 15, with a simple structure and high reliability.

[0093] Exemplarily, as shown in FIG. 18, the flexible circuit board 16 may include a first circuit board portion 161, a second circuit board portion 162, and a third circuit board portion 163 having an integral structure. The electrode terminal 151 is welded to the first circuit board portion 161. The second circuit board portion 162 is bent with respect to the first circuit board portion 161. The microphone 152 is welded to the third circuit board portion 163 and bent with respect to the second circuit board portion 162. In other words, after the flexible circuit board 16 is bent twice, the first circuit board portion 161, the second circuit board portion 162, and the third circuit board portion 163 can correspond to three adjacent surfaces in a hexahedron structure, two by two. One end of the second circuit board portion 162, which is away from the third circuit board portion 163, is connected to the first circuit board portion 161, and the other portion is not connected to the first circuit board portion 161. In this way, after the flexible circuit board 16 and the electrode terminal 151 and the microphone 152 thereon are assembled in the adapter housing 122, the operator first presses one end of the second circuit board portion 162 connected to the first circuit board portion 161 to make it as flush as possible with the first circuit board portion 161, and then ensures not to touch the support assembly 17 to be subsequently assembled.

[0094] In some embodiments, the adapter housing 122 may include two housings whose parting surface is perpendicular to the extending direction of the electrode terminal 151. The two housings engage with each other to form the receiving cavity 124. The support assembly 17 may be integrally formed with one of the two housings so as to support (or press) the electrode terminal 151 and the microphone 152 respectively when the two housings are engaged. Alternatively, at least one of the first support member that supports the electrode terminal 151 and the second support member that supports the microphone 152 in the support assembly 17 is independent of the adapter housing 122 and supports (or presses) the electrode terminal 151 and the microphone 152 respectively when the two housings are engaged, or the support assembly 17 can be assembled after the two housings are engaged to support (or press) the electrode terminal 151 and the microphone 152 respectively.

[0095] In some embodiments, at least the portion corresponding to the receiving cavity 124 of the adapter housing 122 is a complete housing structure. At least the first support member that supports the electrode terminal 151 in the support assembly 17 may be independent of the adapter housing 122 in order to facilitate at least the assembly of the electrode terminal 151.

[0096] Exemplarily, as shown in FIG. 18, the support assembly 17 may be inserted into the receiving cavity 124 independently of the adapter housing 122. In this way, the three components of the support assembly 17, the electrode terminal 151, and the microphone 152 can be assembled in a certain order independently of the adapter housing 122, which is advantageous for avoiding unnecessary structural interference and improving the assembly efficiency.

[0097] In some embodiments, the first support member that supports the electrode terminal 151 and the second support member that supports the microphone 152 in the support assembly 17 may each be independent of the adapter housing 122, that is, the first support member and the second support member are independent of each other so as to support (or press) the electrode terminal 151 and the microphone 152 respectively. In this way, the first support member and the second support member in the support assembly 17 can be differentially designed according to actual needs.

[0098] In some embodiments, the support assembly 17 may be an integrally formed structural member, that is, the first support member that supports the electrode terminal 151 in the support assembly 17 and the second support member that supports the microphone 152 are connected to each other, which is not only advantageous for simplifying the structure of the support assembly 17, but also advantageous for avoiding the situation that the first support member and the second support member are too small to be assembled. The support assembly 17 can be firmly fixed to the cavity wall of the accommodation cavity 124 after being inserted to a predetermined position, that is, it has a certain resistance during the process of inserting or extracting the support assembly 17, with a simple structure and high reliability. Accordingly, guide grooves and position limiting grooves for engaging with the support assembly 17 may be provided on the cavity wall of the accommodation cavity 124. Naturally, the support assembly 17 may also be adhered to the cavity wall of the accommodation cavity 124 by an adhesive application process.

[0099] Exemplarily, as shown in FIGS. 17 and 18, at least a part of the support assembly 17 and the accommodation cavity 124 may be arranged such that the support assembly 17 enters the interval region between the electrode terminal 151 and the microphone 152, and the dimensions in at least one reference direction perpendicular to the insertion direction of the support assembly 17 into the accommodation cavity 124 (for example, the direction indicated by the arrow in FIGS. 17 and 18) gradually decrease along the aforementioned insertion direction. In other words, the dimensions of at least a part of the support assembly 17 in at least one reference direction perpendicular to the aforementioned insertion direction may be arranged to gradually decrease along the aforementioned insertion direction, the dimensions of at least a part of the accommodation cavity 124 in the same reference direction may be arranged to gradually decrease along the aforementioned insertion direction, and the change trends of both are the same or similar. In this way, it is advantageous for the support assembly 17 to be firmly fixed to the cavity wall of the accommodation cavity 124 after being inserted into a predetermined position.

[0100] Exemplarily, as shown in FIGS. 16 to 18, the cavity wall of the accommodation cavity 124 may include a first cavity wall 1241 and a second cavity wall 1242 that are arranged side by side and spaced apart from each other, and a third cavity wall 1243 that connects the first cavity wall 1241 and the second cavity wall 1242. The through hole 1251 may be provided in the first cavity wall 1241, and the through hole 1253 may be provided in the third cavity wall 1243. Correspondingly, the support assembly 17 may include a bottom plate 171 and a first side plate 172 connected to the bottom plate 171, and for example, presents an L-shaped structure. One main surface of one side of the bottom plate 171 is arranged to face the first cavity wall 1241 and may support the electrode terminal 151, and one main surface of one side of the first side plate 172 is arranged to face the third cavity wall 1243 and may support the microphone 152. In this way, after the electrode terminal 151 and the microphone 152 are assembled at predetermined positions, the support assembly 17 is inserted into the accommodation cavity 124 along the above insertion direction. After being inserted into the predetermined position, the electrode terminal 151 and the microphone 152 can be supported respectively through the bottom plate 171 and the first side plate 172.

[0101] Furthermore, the orthographic projection of the microphone 152 onto the first cavity wall 1241 may cover at least a part of the electrode terminals 151. For example, the microphone 152 covers a part of the charging positive electrode terminal 1511, which is advantageous for making the structure of each part more compact.

[0102] In some embodiments, the dimensions of at least a part of the bottom plate 171 and the accommodation cavity 124 in a first reference direction RD1 that is perpendicular to the insertion direction and parallel to one main surface of the bottom plate 171 may be arranged to gradually decrease along the insertion direction. That is, one of the front end and the rear end of the bottom plate 171 in the insertion direction or a portion between the front end and the rear end may be arranged such that the dimension in the first reference direction RD1 does not change along the insertion direction. The dimensions of the first side plate 172 and the accommodation cavity 124 in a second reference direction RD2 that is perpendicular to the insertion direction and parallel to one main surface of the first side plate 172 may be arranged not to change along the insertion direction.

[0103] In some embodiments, the dimensions of at least a part of the first side plate 172 and the accommodation cavity 124 in a second reference direction RD2 that is perpendicular to the insertion direction and parallel to one main surface of the first side plate 172 may be arranged to gradually decrease along the insertion direction. That is, one of the front end and the rear end of the first side plate 172 in the insertion direction or a portion between the front end and the rear end may be arranged such that the dimension in the second reference direction RD2 does not change along the insertion direction. The dimensions of the bottom plate 171 and the accommodation cavity 124 in a first reference direction RD1 that is perpendicular to the insertion direction and parallel to one main surface of the bottom plate 171 may be arranged not to change along the insertion direction.

[0104] In some embodiments, the dimensions of at least a part of the first side plate 172 and the accommodation cavity 124 in a second reference direction RD2 that is perpendicular to the insertion direction and parallel to one main surface of the first side plate 172 may be arranged to gradually decrease along the insertion direction. The dimensions of at least a part of the first side plate 172 and the accommodation cavity 124 in a second reference direction RD2 that is perpendicular to the insertion direction and parallel to one main surface of the first side plate 172 may be arranged to gradually decrease along the insertion direction.

[0105] Regarding the support assembly 17, the dimension of the bottom plate 171 in the first reference direction RD1 can be easily regarded as the width of the bottom plate 171, and the dimension of the first side plate 172 in the second reference direction RD2 can be easily regarded as the height of the first side plate 172.

[0106] Exemplarily, as shown in FIGS. 16 to 18, the support assembly 17 may include a second side plate 173 connected to the bottom plate 171. The second side plate 173 and the first side plate 172 are arranged side by side and spaced apart on the same side of the bottom plate 171. The second side plate 173 abuts against the second cavity wall 1242 and provides a support force towards the electrode terminal 151 to the bottom plate 171. Thus, it is advantageous for improving the support effect of the support assembly 17 on the electrode terminal 151. In an embodiment where the electrode terminals 151 include a charging positive electrode terminal 1511 and a charging negative electrode terminal 1512 that are spaced apart from each other along a direction perpendicular to the insertion direction, the second side plate 173 may be located between the charging positive electrode terminal 1511 and the charging negative electrode terminal 1512 so that each part of the electrode terminal 151 receives a uniform force. Thus, it is advantageous for further improving the support effect of the support assembly 17 on the electrode terminal 151.

[0107] Exemplarily, as shown in FIGS. 16 to 18, the cavity wall of the accommodation cavity 124 may include a fourth cavity wall 1244 that connects the first cavity wall 1241 and the second cavity wall 1242 and faces the third cavity wall 1243. The first cavity wall 1241 and the second cavity wall 1242 may be generally arranged as a planar structure parallel to each other, and the third cavity wall 1243 and the fourth cavity wall 1244 may be generally arranged as an arc-shaped structure that spreads outward from each other so as to expand the volume of the accommodation cavity 124 as much as possible when the volume of the adapter housing 122 is limited. Accordingly, the support assembly 17 may include a third side plate 174 connected to the bottom plate 171. The first side plate 172 and the third side plate 174 are respectively located at both side edges of the bottom plate 171 in a direction perpendicular to the insertion direction, and the second side plate 173 is located between the first side plate 172 and the third side plate 174. The third side plate 174 abuts against the fourth cavity wall 1244 and provides a supporting force towards the microphone 152 to the first side plate 172. Thus, it is advantageous for improving the supporting effect of the support assembly 17 on the microphone 152.

[0108] Furthermore, for the bottom plate 171, the height of the second side plate 173 may be greater than the height of the first side plate 172 and the height of the third side plate 174 respectively, so that the second side plate 173 abuts against the second cavity wall 1242 and the third side plate 174 abuts against the fourth cavity wall 1244. Since the second side plate 173 and the third side plate 174 do not directly contact either the electrode terminal 151 or the microphone 152, they can guide the support assembly 17 during the process of being inserted into the accommodation cavity 124. Accordingly, since the height of the second side plate 173 is relatively the highest, the support assembly 17 may include a reinforcing rib 175 that connects the second side plate 173 and the bottom plate 171. The reinforcing rib 175 may be installed on both opposite sides of the second side plate 173 facing the first side plate 172 and the third side plate 174.

[0109] Exemplarily, as shown in FIGS. 15 to 17 and FIG. 9, the hook-shaped structure 12 may include an elastic wire 121, an adapter housing 122, a battery housing 123, and a conductive wire 129. Both ends of the elastic wire 121 and the conductive wire 129 may be connected to the adapter housing 122 and the battery housing 123, respectively. Thereby, the conductive wire 129 extends along the elastic wire 121 and is wired in the adapter housing 122 and the battery housing 123. Naturally, the conductive wire 129 may be wired in a predetermined wiring path after the elastic wire 121 is connected to the adapter housing 122 and the battery housing 123. The battery 14 may be installed in the battery housing 123 and connected to the flexible circuit board 16 via the conductive wire 129. Thereby, the battery 14 is also connected to the main control circuit board 13 via the flexible circuit board 16. In this way, it is advantageous for simplifying the wiring structure of the earphone 10 and reducing the production cost. In other words, components such as the electrode terminal 151, the microphone 152, and the battery 14 in the hook-shaped structure 12 may be connected to the main control circuit board 13 via the flexible circuit board 16.

[0110] Furthermore, the flexible coating layer 128 can further coat at least the elastic wire 121, the exposed portion of the conductive wire 129, and at least a part of the battery 14 so that the conductive wire 129 is exposed. In this way, it is advantageous for improving the appearance quality of the earphone 10.

[0111] Note that the adapter housing 122 may also be part of the structure of the core housing 111. For example, the adapter housing 122 may be integrally formed with the internal core housing 1111. Also, for example, a part of the adapter housing 122 may be integrally formed with the internal core housing 1111, and the other remaining part may be integrally formed with the external core housing 1112. Other parts of the hook-shaped structure 12 other than the adapter housing 122, for example, one end of the elastic wire 121 away from the battery housing 123, and also for example, the battery housing 123 is fixedly connected, for example, inserted and fixed, to the core module 11 having the adapter housing 122. Accordingly, the positions of structural members such as the electrode terminal 151, the microphone 152, and the magnet 127 are also adjusted accordingly, which will not be described herein.

[0112] Based on the above related description, the present application provides a housing assembly, which may include a plastic housing, a metal functional pattern, and a silicone rubber coating layer. The metal functional pattern is installed on the outer side of the plastic housing. The silicone rubber coating layer can cover the side of the metal functional pattern facing away from the plastic housing and the plastic housing not covered by the metal functional pattern by means such as integral injection molding and adhesive connection. In this way, compared with the metal functional pattern being installed on the inner side of the plastic housing facing away from the silicone rubber coating layer, when the metal functional pattern is installed on the outer side of the plastic housing facing the silicone rubber coating layer, it is separated from the interference of other electronic components in the housing assembly or is close to a signal trigger source outside the housing assembly, thereby improving the interference resistance and sensitivity of the metal functional pattern. The structure of the plastic housing may be the same as or similar to the structure of the core housing 111 or its external core housing 1112, and the structure of the silicone rubber coating layer may be the same as or similar to the structure of the flexible coating layer 1132, which will not be described herein.

[0113] In some embodiments, the metal functional pattern may be installed as the antenna pattern 1141 or the touch pattern 1142. Installing the antenna pattern 1141 outside the plastic housing can increase the spacing from other electronic components within the plastic housing, that is, increase the antenna clearance area, thereby improving the anti-interference performance of the antenna pattern 1141. Installing the touch pattern 1142 outside the plastic housing can shorten the spacing from an external signal trigger source (e.g., the user's finger), that is, reduce the touch spacing, thereby improving the sensitivity of the touch pattern 1142 triggered by the user.

[0114] In some embodiments, the metal functional pattern may include the antenna pattern 1141 and the touch pattern 1142. The antenna pattern 1141 may surround the outer periphery of the touch pattern 1142 so as to make full use of the space outside the plastic housing. The antenna pattern 1141 may be installed in a U shape, and the touch pattern 1142 may be installed in a square shape.

[0115] In some embodiments, the thickness of the silicone rubber coating layer may be smaller than the thickness of the plastic housing, thereby enabling the silicone rubber coating layer to shield and protect the metal functional pattern, further improving the anti-interference performance and sensitivity of the metal functional pattern, and reducing the volume of the housing assembly.

[0116] Exemplarily, the housing assembly may be a core housing that houses the speaker 112. The relative positional relationship between the plastic housing and the silicone rubber coating layer may be the same as or similar to the relative positional relationship between the core housing 111 and the flexible coating layer 1132, and the description thereof is omitted here.

[0117] Furthermore, the housing assembly may be applied to other electronic devices such as smart glasses in addition to the earphone 10. The electronic device may include a core module in which the speaker 112 is installed, may include a main control circuit board 13, and a speaker 112 and a battery 14 respectively coupled to the main control circuit board 13. The housing assembly may house at least one of the electronic components such as the speaker 112, the main control circuit board 13, and the battery 14, and may support the speaker 112 in the electronic device to be positioned at a corresponding wearing position. For electronic devices such as earphones and smart glasses based on the bone conduction principle, the speaker 112 can be adaptively adjusted to a bone conduction speaker. The basic structure of the bone conduction speaker is well known to those skilled in the art and will not be described here.

[0118] This application provides a housing assembly, which may include a first housing, an electrode terminal 151, a magnet 127, and a flexible coating layer 128. The electrode terminal 151 and the magnet 127 are exposed on the same side of the first housing. The flexible coating layer 128 has a hardness smaller than that of the first housing, covers the first housing and the magnet 127, so that the magnet 127 is not exposed and the electrode terminal 151 is exposed. In this way, compared with the case where the magnet 127 is installed in the first housing, in this technical means, by bringing the magnet 127 closer to the outside where the exposed end of the electrode terminal 151 faces, the distance between the magnet 127 and the magnetic attraction structure that cooperates with the magnet 127 in a charging device such as a charging case, or the distance between the magnet 127 and the hall sensor that cooperates with the magnet 127 is shortened. Thus, it is advantageous for improving the reliability of functions such as charging and detection. Therefore, the housing assembly may be applied to a power receiving device such as an earphone 10 or a smart glass, or may be applied to a charging device such as a charging case. In other words, the electronic device may be a power receiving device or a charging device. For the convenience of description, the first housing may be an adapter housing 122.

[0119] In some embodiments, the first housing may be provided with a through hole 1251 and a blind hole 1252. At least a part of the electrode terminal 151 may be disposed within the through hole 1251, and at least a part of the magnet 127 may be disposed within the blind hole 1252 and may be exposed through the open end of the blind hole 1252. Thus, it is not only advantageous for reducing the thickness of the region of the first housing where the magnet 127 is located, but also advantageous for improving the appearance quality of the region of the first housing where the magnet 127 is located. Naturally, the blind hole 1252 may be provided as a through hole.

[0120] In some embodiments, a boss 126 may be provided on the outside of the first housing. The boss 126 is disposed adjacent to the magnet 127 and protrudes from the first housing around the magnet 127. The through hole 1251 further penetrates through the boss 126 to expose the plurality of electrode terminals 151 to the boss 126 respectively. Thus, due to the boss 126, since the first housing has a certain radian, the non-flat part becomes flat, facilitating the installation of the electrode terminals 151. The boss 126 may be provided in a long shape, with a simple structure and high reliability.

[0121] In some embodiments, the housing assembly may include a flexible circuit board 16. In order to simplify the wiring of the electrode terminals 151, the electrode terminals 151 are connected to the flexible circuit board 16. A receiving cavity 124 may be formed in the first housing. At least a part of the flexible circuit board 16 may be disposed within the receiving cavity 124. By the through hole 1251 communicating with the receiving cavity 124 and the blind hole 1252 not communicating with the receiving cavity 124, the waterproof and dustproof performance of the first housing is improved.

[0122] In some embodiments, the housing assembly may include a second housing, an elastic wire 121, and a conductive wire 129. Both ends of the elastic wire 121 and the conductive wire 129 may be connected to the first housing and the second housing, respectively, such that the conductive wire 129 extends along the elastic wire 121 and is wired within the first housing and the second housing. For the sake of convenience of description, the second housing may be a battery housing 123. Further, a battery 14 is installed within the second housing, and the battery 14 is connected to a flexible circuit board 16 via the conductive wire 129, that is, both the battery 14 and the electrode terminal 151 are connected to the flexible circuit board 16, simplifying the wiring. Accordingly, the flexible coating layer 128 further coats at least the elastic wire 121 and the conductive wire 129 such that the conductive wire 129 is exposed.

[0123] In some embodiments, the housing assembly may be used in the earphone 10 and may include a third housing that houses a speaker 112. The third housing is inserted and fixed to the first housing. For the sake of convenience of description, the third housing may be a core housing 111.

[0124] This application provides a housing assembly, which may include a first housing, an electrode terminal 151, a microphone 152, and a support assembly 17. The first housing may be provided with a receiving cavity 124, a through hole 1251 and a through hole 1253 that communicate with the receiving cavity 124 respectively. The through hole 1251 and the through hole 1253 are located on different side walls of the first housing. At least a part of the electrode terminal 151 may be installed in the through hole 1251. The microphone 152 is installed in the receiving cavity 124 and can pick up sound outside the housing assembly through the through hole 1253. Further, the support assembly 17 is installed in the receiving cavity 124 and can support and fix the electrode terminal 151 and the microphone 152 to the side walls corresponding to the through hole 1251 and the through hole 1253 respectively. In this way, it is not only advantageous to avoid the separation of the electrode terminal 151 and the microphone 152 from the first housing, but also advantageous to improve the waterproof and dustproof performance of the electrode terminal 151 and the microphone 152. The structure is simple and the reliability is high. For the convenience of description, the first housing may be an adapter housing 122, or a core housing 111, or a housing structure in which the core housing 111 and the adapter housing 122 are integrally formed.

[0125] In some embodiments, the support assembly 17 may be inserted into the receiving cavity 124 independently of the first housing.

[0126] In some embodiments, the support assembly 17 may be an integrally formed structural member.

[0127] In some embodiments, the housing assembly may be used in the earphone 10 and may include a third housing for accommodating the speaker 112. The third housing is inserted and fixed to the first housing. The first housing may be the adapter housing 122, and the third housing may be the core housing 111.

[0128] Furthermore, the housing assembly may be applied to other electronic devices such as smart glasses in addition to the earphone 10. The electronic device may include a main control circuit board 13, a speaker 112 and a battery 14 respectively coupled to the main control circuit board 13. The housing assembly may house at least one of the electronic components such as the speaker 112, the main control circuit board 13 and the battery 14, and may support the speaker 112 in the electronic device to be positioned at a corresponding wearing position. For electronic devices such as earphones and smart glasses based on the bone conduction principle, the speaker 112 can be adaptively adjusted to the bone conduction speaker, and the basic structure of the bone conduction speaker is well known to those skilled in the art and will not be described here.

[0129] Exemplarily, as shown in FIGS. 19, 4, and 3, the earphone 10 may include a core module 11 and a hook-shaped structure 12 connected to the core module 11. The core module 11 may be located on the front side of the ear in the worn state, and at least a part of the hook-shaped structure 12 may be located on the rear side of the ear in the worn state. The core module 11 may have an inner surface IS facing the ear along the thickness direction X and an outer surface OS facing away from the ear in the worn state. The thickness direction X is defined as the direction in which the core module 11 approaches or moves away from the ear in the worn state. Further, in the non-worn state, in the thickness direction X, the hook-shaped structure 12 first extends toward the side facing away from the outer surface OS of the inner surface IS, and then extends to the side facing the outer surface OS of the inner surface IS. In this way, since the hook-shaped structure 12 first extends toward the side facing away from the outer surface OS of the inner surface IS in the thickness direction X, a part of the hook-shaped structure 12 can be displaced from the projection of the core module 11 in the direction perpendicular to the thickness direction X, thereby reducing the supporting force of the earphone 10 on the upper ear root of the ear in the worn state. Thus, it is advantageous for improving the wearing comfort of the earphone 10. The hook-shaped structure 12 extends to the other side facing the outer surface OS of the inner surface IS in the thickness direction X, and another part of the hook-shaped structure 12 can overlap with the projection of the core module 11 in the direction perpendicular to the thickness direction X, thereby increasing the supporting force of the earphone 10 on other physiological parts of the ear except for the upper ear root of the ear in the worn state. Thus, it is advantageous for improving the wearing stability of the earphone 10. The aforementioned supporting force may include the clamping force of the earphone 10 on the ear and the frictional force between the earphone 10 and the ear (and the surrounding head). In addition, in the embodiment where the free end of the core module 11 enters the concha cavity of the ear in the worn state, such installation is also advantageous for the free end of the core module 11 to enter the concha cavity in the worn state.

[0130] In some embodiments, the inner surface IS may be installed on a plane. In the non-worn state, the plane where the inner surface IS is located may intersect with the hook-shaped structure 12.

[0131] In some embodiments, in the worn state, the clamping force exerted on the ear by the hook-shaped structure 12 and the core module 11 in the thickness direction X, for example, the force by which the earphone 10 clamps the ear from the left-right direction of the head, can be made a part of the clamping force of the ear by the earphone 10. The aforementioned clamping force can be measured by a pull gauge. For example, the earphone 10 is worn on the above simulator or the user's ear, that is, in the worn state, and then a pull gauge (for example, Weidu WDF-10 digital push-pull gauge, the description is omitted hereinafter) is fixed to the side of the core module 11 facing away from the ear, and the pull gauge is pulled and observed. When the side of the core module 11 facing the user's ear just separates from the skin of the ear, the tensile force displayed on the pull gauge is read out, and this tensile force can be simply regarded as the clamping force.

[0132] Exemplarily, as shown in FIGS. 19 and 9, the hook-shaped structure 12 may include an elastic wire 121 connected to the core module 11. At least a part of the elastic wire 121 may be located at the rear side of the ear in the worn state, and the plane in which the elastic wire 121 is located may intersect the inner surface IS in the non-worn state. The elastic wire 121 can generate a certain elastic deformation with respect to the core module 11 in the thickness direction X, thereby providing a corresponding clamping force. In this way, a part of the hook-shaped structure 12 can overlap the projection of the core module 11 in a direction perpendicular to the thickness direction X. Further, in the worn state, the elastic wire 121 elastically deforms to clamp the ear together with the core module 11 and fit the ear. When the hook-shaped structure 12 includes a coating layer such as a flexible coating layer 128, structural members such as the elastic wire 121, the adapter housing 122, and the lid case 1231 shown in FIG. 9 are not shown in FIG. 19. Of course, in some embodiments, the hook-shaped structure 12 may not include the elastic wire 121. For example, a hard plastic part is used instead of the elastic wire 121, and the deformation ability of the hook-shaped structure 12 in each direction is designed according to the material, length, cross-sectional dimensions, etc. of the hard plastic part, and the description is omitted hereinafter.

[0133] In some embodiments, when in the non-worn state, there may be an included angle θ formed between the plane in which the elastic wire 121 is located and the inner surface IS, for example, the included angle formed between the bisector line ML and the inner surface IS in FIG. 19. The aforementioned included angle may be 15° to 30°. If the aforementioned included angle is too small, it is likely to cause wearing instability due to insufficient clamping force of the earphone 10 on the ear. If the aforementioned included angle is too large, the clamping force of the earphone 10 on the ear is too large, which is likely to cause discomfort during wearing. Further, the aforementioned bisector line may refer to the axis of the elastic wire 121.

[0134] In some embodiments, the diameter of the elastic wire 121 may be 0.6 mm to 0.8 mm. If the aforementioned diameter is too small, it is difficult for the elastic wire 121 to provide sufficient clamping force, which is likely to cause insufficient structural strength. If the aforementioned diameter is too large, it is difficult for the elastic wire 121 to undergo elastic deformation, which is likely to cause the provided clamping force to be too large.

[0135] Exemplarily, as shown in FIGS. 19, 9, and 7, the hook-shaped structure 12 may include an adapter housing 122 that connects the elastic wire 121 and the core module 11. At least a part of the adapter housing 122 may be located on the front side of the ear in the worn state. The adapter housing 122 extends in a direction away from the outer surface OS of the inner surface IS in the thickness direction X. In this way, a part of the hook-shaped structure 12 can be displaced from the projection of the core module 11 in a direction perpendicular to the thickness direction X. Further, in the worn state, the supporting force of the earphone 10 on the upper ear root of the ear can be reduced. When the hook-shaped structure 12 includes a coating layer such as a flexible coating layer 128, the adapter housing 122 shown in FIG. 9 is not shown in FIG. 19.

[0136] Exemplarily, as shown in FIGS. 19 and 9, the hook-shaped structure 12 may include a battery housing 123 connected to one end of the core module 11 away from the elastic wire 121. A battery 14 coupled to the core module 11 is installed in the battery housing 123. In the non-worn state, at least a part of the battery housing 123 may be located between the inner surface IS and the outer surface OS in the thickness direction X. Note that the battery housing 123 may contact the rear side and / or the head of the ear part in the worn state.

[0137] Exemplarily, as shown in FIGS. 19 and 2, the core module 11 may have a length direction Y and a width direction Z that are perpendicular to the thickness direction X and perpendicular to each other. The length of the core module 11 in the length direction Y may be greater than the width in the width direction Z of the core module 11. The core module 11 may have an upper surface US facing away from the ear canal of the ear part along the width direction Z in the worn state, a lower surface LS facing the ear canal, and a rear surface RS connecting the upper surface US and the lower surface LS. The rear surface RS is located at one end facing the occipital part in the length direction Y in the worn state. Further, the bisector ML of the orthographic projection of the hook-shaped structure 12 onto a reference plane perpendicular to the width direction Z (for example, the XY plane in FIG. 19) and the orthographic projection of the inner surface IS onto the same reference plane can form a first intersection point O1, and the bisector ML and the orthographic projection of the rear surface RS onto the same reference plane can form a second intersection point O2. The bisector ML can pass through the geometric center of the cross-section of any point in the hook-shaped structure 12. For example, the bisector ML is the axis of the elastic wire 121. Thus, when the orthographic projection of the core module 11 onto a reference plane perpendicular to the thickness direction X is a non-circular structure such as a rounded rectangle, the orthographic projection of the hook-shaped structure 12 along the width direction Z fits within the upper surface US. Note that since the core module 11 and the hook-shaped structure 12 partially overlap in the width direction, the dashed lines in FIG. 19 indicate the portions where the inner surface IS and the rear surface RS are shielded by the hook-shaped structure 12.

[0138] In some embodiments, the first intersection point O1 and the second intersection point O2 are connected to form a first reference line segment O1O2. The first reference line segment O1O2 may have a first portion and a second portion in the length direction Y and the thickness direction Z, respectively. The ratio of the aforementioned first portion to the length of the core module 11 in the length direction Y may be 0.12 to 0.19, and the ratio of the aforementioned second portion to the thickness of the core module 11 in the thickness direction X may be 0.1 to 0.16. Thus, an appropriate included angle, for example, an included angle θ of 15° to 30°, can exist between the hook-shaped structure 12 and the inner surface IS. Furthermore, the earphone 10 can apply an appropriate clamping force to the ear.

[0139] In some embodiments, the farthest point O3, which is the farthest from the inner surface IS in the thickness direction X of the bisector ML, and the first intersection point O1 are connected to form a second reference line segment O1O3. The second reference line segment O1O3 may have a third portion and a fourth portion in the length direction Y and the thickness direction X, respectively. The ratio of the aforementioned third portion to the length of the core module 11 in the length direction Y may be 0.43 to 0.66, and the ratio of the aforementioned fourth portion to the thickness of the core module 11 in the thickness direction X may be 0.26 to 0.4. Thus, an appropriate included angle, for example, an included angle θ of 15° to 30°, can exist between the hook-shaped structure 12 and the inner surface IS. Furthermore, the earphone 10 can apply an appropriate clamping force to the ear.

[0140] Exemplarily, as shown in FIG. 3, the earphone 10 may include a core module 11 and a hook-shaped structure 12 connected to the core module 11. The core module 11 may be located on the front side of the ear in the worn state. The free end FE not connected to the hook-shaped structure 12 of the core module 11 may enter the concha cavity of the ear in the worn state. At least a part of the hook-shaped structure 12 may be located on the rear side of the ear in the worn state. The core module 11 and the hook-shaped structure 12 can jointly sandwich the ear region with a certain clamping force from both the front and rear sides of the ear region corresponding to the concha cavity. If the aforementioned clamping force is too small, it is likely to cause instability in the wearing of the earphone 10. If the aforementioned clamping force is too large, it is likely to cause discomfort in the wearing of the earphone 10.

[0141] In some embodiments, in the worn state, the clamping force applied to the ear by the hook-shaped structure 12 and the core module 11 in a direction perpendicular to the thickness direction X, for example, the force with which the earphone 10 clamps the ear from the front-rear direction of the head, can be part of the clamping force of the earphone 10 on the ear. The aforementioned clamping force can be measured by a pull gauge. For example, the earphone 10 is worn on the above simulator or the user's ear, that is, in the worn state. Next, the pull gauge is fixed to one end away from the core module 11 of the hook-shaped structure 12 and pulled to observe. When the side of the hook-shaped structure 12 facing the user's ear just leaves the skin of the ear, the tensile force displayed on the pull gauge is read out, and this tensile force can be simply regarded as the clamping force.

[0142] In some embodiments, in the non-worn state, the deformation ability of the hook-shaped structure 12 with respect to the core module 11 can be reflected by a corresponding measurement method, and further the clamping force that the earphone 10 can apply to the ear can be characterized. The aforementioned measurement method will be exemplarily described below.

[0143] Exemplarily, as shown in FIGS. 20 and 4, the hook-shaped structure 12 and the core module 11 may not overlap in the orthographic projection on a first reference plane (e.g., the YZ plane in FIG. 20) perpendicular to the thickness direction X. The thickness direction X is defined as the direction in which the core module 11 approaches or moves away from the ear part in the mounted state, whereby the earphone 10 can sandwich the ear part from the front-rear direction of the ear part region. There may be a first reference line segment RL1 with the shortest length between the orthographic projection of the hook-shaped structure 12 and the orthographic projection of the core module 11. The orthographic projection of the core module 11 onto a reference plane perpendicular to the thickness direction X may be a rounded rectangle or an ellipse, or may be a circle or a rounded square. Further, after the core module 11 is fixed, the hook-shaped structure 12 may have a tensile force of 0.6 N to 8 N when, at the measurement fixing position P1, it is parallel to the first reference line segment RL1 and is separated from the core module 11 by a distance of 5 mm to 10 mm along the direction away from the core module 11 (e.g., indicated by the arrow F in FIG. 20). The measurement fixing position P1 may be defined as a position 16 mm to 27 mm away from the free end (e.g., indicated by P2 in FIG. 20) of the hook-shaped structure 12 that is not connected to the core module 11 in the length direction of the hook-shaped structure 12 (e.g., indicated by the arrow L in FIG. 9, which will be omitted hereinafter). Preferably, after the core module 11 is fixed, the hook-shaped structure 12 may have a tensile force of 0.8 N to 5 N when, at the measurement fixing position P1, it is parallel to the first reference line segment RL1 and is separated from the core module 11 by a distance of 5 mm to 10 mm along the direction away from the core module 11.

[0144] Further, after the core module 11 is fixed, the hook-shaped structure 12 may have a tensile force of 0.1 N to 1.96 N when, at the measurement fixing position P1, it is parallel to the first reference line segment RL1 and is separated from the core module 11 by a distance of 1 mm to 5 mm along the direction away from the core module 11.

[0145] In some embodiments, in the non-worn state, the earphone 10 can be fixed to the measurement platform. For example, the core module 11 is fixed to the clamp of the measurement platform. In this case, the first reference line segment RL1 may be parallel to the horizontal plane, and the hook-shaped structure 12 may be in a suspended state. Based on this, the pull gauge 20 can be fixed to the hook-shaped structure 12. For example, the hook of the pull gauge 20 can be hooked to the measurement fixing position P1, so the measurement fixing position P1 appears as a straight line in FIG. 20. Then, the measurer can manually pull the pull gauge 20 slowly so that the displacement amount of the pull gauge 20 becomes d. Accordingly, the hook-shaped structure 12 deforms from the initial position L1 to the measurement position L2, and the tensile force F at this displacement amount is recorded. Based on this, at the same measurement fixing position P1, by measuring multiple times, that is, by making the displacement amounts of the pull gauge 20 different and recording the tensile force F at the corresponding displacement amounts, the deformation ability of the hook-shaped structure 12 with respect to the core module 11 is reflected, and further the clamping force that the earphone 10 can apply to the ear is characterized. Naturally, the pull gauge 20 may be a part of the measurement platform, and after the earphone 10 is fixed, the measurement platform separates the hook-shaped structure 12 from the core module 11, that is, performs automatic measurement.

[0146] In some embodiments, in the non-worn state, the core module 11 can be pressed against the edge of the table surface to make the hook-shaped structure 12 in a suspended state as much as possible. Similarly, the hook of the pull gauge 20 can be hooked to the measurement fixing position P1 to perform the above-mentioned measurement, but the description is omitted here.

[0147] The following table exemplarily shows the correspondence between the tensile force F and the separation distance d at different measurement fixed positions P1. The unit of the tensile force F is N, and the unit of the separation distance d is mm. Further, in the following table, #1, #2, and #3 indicate that the measurement fixed position P1 is 16 mm, 21.5 mm, and 27 mm away from the free end not connected to the core module 11 of the hook-shaped structure 12 in the length direction of the hook-shaped structure 12, respectively. In order to reduce measurement errors, the average value of each tensile force F can be taken after multiple measurements. For example, the average value is taken after three measurements.

[0148]

Table 1

[0149] In some embodiments, the length of the first reference line segment RL1 may be 2 mm to 3 mm. If the length of the first reference line segment RL1 is too small, it is likely to cause discomfort in wearing the earphone 10. If the length of the first reference line segment RL1 is too large, it is likely to cause instability in wearing the earphone 10.

[0150] In some embodiments, the distance between the measurement fixed position P1 and the first reference line segment RL1 is 1 mm or less. In this way, the measurement fixed position P1 can be made as close as possible to the position where it contacts the ear part pre-installed on the hook-shaped structure 12.

[0151] In some embodiments, the core module 11 may have a length direction Y and a width direction Z that are perpendicular to the thickness direction X and perpendicular to each other. The length of the core module 11 in the length direction Y may be greater than the width of the core module 11 in the width direction Z. As shown in FIGS. 21 and 20, the orthographic projection of the free end FE of the core module 11 onto a second reference plane (e.g., the XZ plane in FIG. 21) perpendicular to the length direction Y has a geometric center GC. For example, the geometric center is the center of the circumcircle of the aforementioned orthographic projection. The distance between the measurement fixed position P1 and the extension line passing through the geometric center GC and parallel to the first reference line segment RL1 may be 1 mm or less. In this way, the measurement fixed position P1 can be made as close as possible to the position where it contacts the ear part pre-installed on the hook-shaped structure 12. For example, the core module 11 has an inner surface IS facing the ear part along the thickness direction X and an outer surface OS facing away from the ear part in the mounted state, and an upper surface US facing away from the ear canal of the ear part and a lower surface LS facing the ear canal along the width direction Z. The inner surface IS, the outer surface OS, the upper surface US, and the lower surface LS enclose a geometric figure in the second reference plane, and the geometric center GC is defined as the center of the circumcircle of the aforementioned geometric figure.

[0152] Exemplarily, as shown in FIG. 20, the core module 11 may have a length direction Y and a width direction Z that are perpendicular to the thickness direction X and perpendicular to each other, and the length of the core module 11 in the length direction Y may be greater than the width in the width direction Z of the core module 11. Note that the core module 11 may have an upper surface US facing away from the external auditory canal of the ear part along the width direction Z and a lower surface LS facing the external auditory canal in the mounted state. Further, there may be a second reference line segment RL2 that is parallel to the width direction Z and has the longest length between the orthographic projection of the hook-shaped structure 12 and the orthographic projection of the core module 11, and the length of the second reference line segment RL2 may be 13 mm to 20 mm. If the length of the second reference line segment RL2 is too small, it is likely to cause the free end FE of the core module 11 not to enter the concha cavity and the sound emission hole 111a in the core module 11 to be too far away from the external auditory canal. If the length of the second reference line segment RL2 is too large, it is also likely to cause the free end FE not to enter the concha cavity and the external auditory canal to be excessively shielded by the core module 11. In other words, in this way, the free end FE of the core module 11 can enter the concha cavity, and the sound emission hole 111a in the core module 11 has an appropriate distance from the external auditory canal, so that when the external auditory canal is not blocked, the user can hear more sound waves generated by the core module 11.

[0153] Furthermore, the direction in which the first reference line segment RL1 is located may be parallel to the length direction Y. In other words, when the orthographic projection of the core module 11 onto the reference plane perpendicular to the thickness direction X is installed as a rounded rectangle, the distance between the orthographic projection of the hook-shaped structure 12 and the orthographic projection of the core module 11 in the length direction Y is the smallest.

[0154] In some embodiments, a point P3 where the second reference line segment RL2 intersects the orthographic projection of the core module 11 is taken as the starting point of the second reference line segment RL2, and a point P4 where the second reference line segment RL2 intersects the orthographic projection of the hook-shaped structure 12 is taken as the ending point of the second reference line segment RL2. A third reference line segment RL3 passing through the 1 / 4 position of the second reference line segment RL2 and parallel to the length direction Y intersects the hook-shaped structure 12 at a first intersection point P5 and a second intersection point P6. The first intersection point P5 is closer to the core module 11 than the second intersection point P6 in the length direction of the hook-shaped structure 12. Further, the distance between the first intersection point P5 and the starting point of the second reference line segment RL2 may be 9 mm to 15 mm, and the distance between the second intersection point P6 and the starting point of the second reference line segment RL2 may be 12 mm to 19 mm. In this way, when the free end FE of the core module 11 enters the concha cavity and the sound-emitting hole 111a in the core module 11 has an appropriate distance from the external auditory canal, the hook-shaped structure 12 and the core module 11 apply an appropriate clamping force to the ear.

[0155] Exemplarily, as shown in FIGS. 20 and 9, the hook-shaped structure 12 may include an elastic wire 121 connected to the core module 11 and a battery housing 123 connected to one end of the elastic wire 121 away from the core module 11. A battery 14 coupled to the core module 11 is installed in the battery housing 123. The extension line of the first reference line segment RL1 may pass through the battery housing 123. In this way, since the portion of the hook-shaped structure 12 corresponding to the battery housing 123 is thicker than the portion corresponding to the elastic wire 121 of the hook-shaped structure 12, the hook-shaped structure 12 clamps the ear together with the core module 11 via the battery housing 123, which is advantageous for improving the wearing comfort of the earphone 10. The elastic wire 121 can generate a certain elastic deformation with respect to the core module 11 in a direction perpendicular to the thickness direction X, thereby providing a corresponding clamping force. When the hook-shaped structure 12 includes a coating layer such as a flexible coating layer 128, structural members such as the elastic wire 121, the adapter housing 122, and the lid case 1231 shown in FIG. 9 are not shown in FIG. 20.

[0156] In some embodiments, the battery housing 123 may include a lid case 1231 connected to the elastic wire 121 and a battery magazine 1232 connected to the lid case 1231. The battery magazine 1232 and the lid case 1231 engage to form a cavity structure for accommodating the battery 14. The hook-shaped structure 12 may include a flexible coating layer 128 covering at least the elastic wire 121 and the lid case 1231, and the hardness of the flexible coating layer 128 may be smaller than the hardness of the lid case 1231. Further, the extension line of the first reference line segment RL1 may pass through a segment where the flexible coating layer 128 and the lid case 1231 overlap. In this way, the hook-shaped structure 12 further sandwiches the ear part together with the core module 11 via the flexible coating layer 128 on the lid case 1231, which is advantageous for further improving the wearing comfort of the earphone 10.

[0157] In some embodiments, one end of the hook-shaped structure 12 in the length direction of the battery magazine 1232 may be installed in an open shape, and the lid case 1231 may be partially inserted into the open end of the battery magazine 1232. The area of the outer surface of the lid case 1231 in a reference cross-section perpendicular to the length direction of the hook-shaped structure 12 may be smaller than the area of the outer surface of the battery magazine 1232 in a reference cross-section perpendicular to the length direction of the hook-shaped structure 12, that is, the outer diameter of the lid case 1231 may be smaller than the outer diameter of the battery magazine 1232. Further, the flexible coating layer 128 may not cover the battery magazine 1232, and the outer surface of the flexible coating layer 128 smoothly transitions with the outer surface of the battery magazine 1232 to improve the appearance quality in the non-wearing state of the earphone 10. In this case, the measurement fixed position P1 may be located at the boundary between the flexible coating layer 128 and the battery magazine 1232. In this way, the measurement fixed position P1 can be made as close as possible to the position where it contacts the ear part pre-installed in the hook-shaped structure 12.

[0158] Exemplarily, as shown in FIGS. 3 and 9, the earphone 10 may include a core module 11 and a hook-shaped structure 12 connected to the core module 11. The hook-shaped structure 12 may include a battery housing 123, and a battery 14 coupled to the core module 11 may be installed in the battery housing 123. The core module 11 may be located on the front side of the ear in the worn state. The free end FE not connected to the hook-shaped structure 12 of the core module 11 may enter the concha cavity of the ear in the worn state, and at least a part of the hook-shaped structure 12 may be located on the rear side of the ear in the worn state. Further, the core module 11 and the battery housing 123 may sandwich the ear region together from both the front and rear sides of the ear region corresponding to the concha cavity, whereby the earphone 10 can be stably and comfortably worn on the ear. The battery housing 123 may contact the head skin on the outer periphery of the ear, which is advantageous for increasing the contact area between the battery housing 123 and the user's skin. When the user wears the earphone 10 stably and comfortably, the user can feel that he / she is wearing the earphone 10, providing the user with a sense of wearing stability and improving the user's wearing experience. In addition, since the contact area between the earphone 10 and the user's skin increases, it is also advantageous for reducing the risk of the earphone 10 falling off from the ear when the user lowers or raises the head or shakes the neck.

[0159] In some embodiments, the maximum area of the outer surface of the battery housing 123 in a reference cross-section perpendicular to the length direction of the hook-shaped structure 12 may be 60 mm 2 ~100 mm 2 It may be. If the aforementioned maximum area is too small, it becomes difficult for the battery housing 123 to contact the head skin on the outer periphery of the ear, and it becomes difficult to satisfy the needs of the battery life of the earphone 10 due to insufficient capacity of the battery 14. If the aforementioned maximum area is too large, the battery housing 123 will be too visible from the front side of the ear, further affecting the appearance quality in the worn state of the earphone 10.

[0160] Exemplarily, as shown in FIG. 9, the battery housing 123 may include a lid case 1231 and a battery magazine 1232 connected to the lid case 1231. One end of the hook-shaped structure 12 of the battery magazine 1232 in the length direction may be installed in an open shape. The lid case 1231 may be partially inserted into the open end of the battery magazine 1232 so as to form an engaging cavity structure for accommodating the battery 14. The area of the outer surface of the lid case 1231 in the reference cross-section perpendicular to the length direction of the hook-shaped structure 12 gradually increases in the positive direction along the length direction of the hook-shaped structure 12 and close to the battery magazine 1232. That is, the hook-shaped structure 12 may be installed in a tapered structure in the lid case 1231, which is advantageous for relaxing the outer diameter difference between the battery magazine 1232 and other parts of the hook-shaped structure 12 (for example, the elastic wire 121), and the overall appearance of the hook-shaped structure 12 is smoother and more uniform. Further, the lid case 1231 may contact the above ear region so as to sandwich the core module 11 and the ear part. The battery magazine 1232 may contact the head skin on the outer periphery of the ear part so as to increase the contact area between the battery housing 123 and the user's skin. In other words, different parts of the battery housing 123 contact the skin at different physiological positions.

[0161] In some embodiments, the contact area between the lid case 1231 and the head skin on the outer periphery of the ear part may be smaller than the contact area between the battery magazine 1232 and the head skin on the outer periphery of the ear part. Thereby, when the lid case 1231 and the core module 11 sandwich the ear part, in the lid case 1231, there is no need to consider the contact between the battery housing 123 and the head skin on the outer periphery of the ear part more than necessary. In other words, different parts of the battery housing 123 may have different original design purposes. Therefore, the lid case 1231 may not contact the head skin on the outer periphery of the ear part.

[0162] In some embodiments, the hook-shaped structure 12 may include an elastic wire 121 connecting the core module 11 and the lid case 1231, and a flexible coating layer 128 covering at least the elastic wire 121 and the lid case 1231. The lid case 1231 may contact the ear region through the flexible coating layer 128 to improve the wearing comfort of the earphone 10. The flexible coating layer 128 may not cover the battery magazine 1232. In this way, since the hook-shaped structure 12 is too thick in the battery magazine 1232, it is advantageous to reduce the risk of excessive exposure from the front side of the ear, and further improve the appearance quality of the earphone 10 in the worn state. Further, the outer surface of the flexible coating layer 128 may smoothly transition with the outer surface of the battery magazine 1232 to improve the appearance quality of the earphone 10 in the non-worn state.

[0163] In some embodiments, the core module 11 may have an inner surface IS facing the ear along the thickness direction X and an outer surface OS facing away from the ear in the worn state. The thickness direction X is defined as the direction in which the core module 11 approaches or moves away from the ear in the worn state. In the non-worn state, at least a part of the battery housing 123 is located between the inner surface IS and the outer surface OS in the thickness direction X, so that the clamping force of the ear by the earphone 10 mainly appears as a positive pressure. In this way, it is advantageous to improve the wearing comfort of the earphone 10. Further, the core module 11 may have a length direction Y and a width direction Z that are perpendicular to the thickness direction X and perpendicular to each other. The length of the core module 11 in the length direction Y may be greater than the width of the core module 11 in the width direction Z. The orthographic projection of the lid case 1231 along the length direction Y and the orthographic projection of the core module 11 along the length direction Y may at least partially overlap. The orthographic projection of the battery magazine 1232 along the length direction Y and the orthographic projection of the core module 11 along the length direction Y may not at least partially overlap. Thereby, the hook-shaped structure 12 can mainly clamp the ear together with the core module 11 in the lid case 1231.

[0164] Exemplarily, as shown in FIGS. 22, 9, and 3, the earphone 10 may include a core module 11 and a hook-shaped structure 12 connected to the core module 11. The core module 11 may be located on the front side of the ear in the worn state, and at least a part of the hook-shaped structure 12 may be located on the rear side of the ear in the worn state. The hook-shaped structure 12 and the core module 11 may not overlap in the orthographic projection onto a reference plane perpendicular to the thickness direction X (for example, the YZ plane in FIG. 22), and the thickness direction X is defined as the direction in which the core module 11 approaches or moves away from the ear in the worn state. Further, the hook-shaped structure 12 may include a battery housing 123 and a flexible coating layer 128. A battery 14 coupled to the core module 11 may be installed in the battery housing 123, and may include a lid case 1231 and a battery magazine 1232 connected to the lid case 1231. The flexible coating layer 128 may cover the lid case 1231. There may be a first reference line segment RL1 with the shortest length between the orthographic projection of the hook-shaped structure 12 and the orthographic projection of the core module 11, and the point where the first reference line segment RL1 intersects the orthographic projection of the hook-shaped structure 12 may be located in the segment where the flexible coating layer 128 and the lid case 1231 overlap. In other words, the hook-shaped structure 12 contacts the rear side of the ear through the lid case 1231 and the flexible coating layer 128 on the lid case 1231, and can further sandwich the ear together with the core module 11, which is advantageous for improving the wearing comfort of the earphone 10. Note that the orthographic projection of the core module 11 onto a reference plane perpendicular to the thickness direction X may be a rounded rectangle or an ellipse, or may be a circle or a rounded square.

[0165] In some embodiments, in the worn state, the clamping force applied to the ear in the thickness direction X by the hook-shaped structure 12 and the core module 11, for example, the force with which the earphone 10 clamps the ear from the left-right direction of the head, can be part of the clamping force of the ear by the earphone 10.

[0166] In some embodiments, in the worn state, the clamping force applied to the ear by the hook-shaped structure 12 and the core module 11 in a direction perpendicular to the thickness direction X, for example, the force by which the earphone 10 clamps the ear from the front-back direction of the head, can be part of the clamping force of the ear by the earphone 10.

[0167] In some embodiments, in the non-worn state, the earphone 10 may have a second reference line RL2 parallel to a first reference line segment RL1 in a reference plane perpendicular to the thickness direction X (for example, the YZ plane in FIG. 22). The second reference line RL2 intersects the orthographic projection of the battery housing 123 and is the farthest from the first reference line segment RL1. Based on this, there may be a maximum distance, such as the length of the third reference line segment RL3 in FIG. 22, between the edge of the orthographic projection of the hook-shaped structure 12 facing the core module 11 and the second reference line RL2. The aforementioned maximum distance may be 34 mm to 52 mm. If the aforementioned maximum distance is too small, the capacity of the battery 14 will be insufficient and it will be difficult to meet the battery life needs of the earphone 10. If the aforementioned maximum distance is too large, the battery housing 123 will be too long, making the hook-shaped structure 12 too visible from the front side of the ear, which not only easily affects the appearance quality of the earphone 10 in the worn state, but especially in the case of female users, the hook-shaped structure 12 is likely to interfere with the earring worn by the user on the earlobe or near it, further affecting the user's comfort in use.

[0168] In some embodiments, in the worn state, the distance (for example, shown as V1 in FIG. 3) between the free end of the hook-shaped structure 12 not connected to the core module 11 and the upper ear root of the ear on the vertical axis of the human body may be 37 mm to 56 mm. If the aforementioned distance is too small, the capacity of the battery 14 will be insufficient and it will be difficult to meet the battery life needs of the earphone 10. If the aforementioned distance is too large, the battery housing 123 will be too long, making the hook-shaped structure 12 too visible from the front side of the ear, which not only easily affects the appearance quality of the earphone 10 in the worn state, but especially in the case of female users, the hook-shaped structure 12 is likely to interfere with the earring worn by the user on the earlobe or near it, further affecting the user's comfort in use.

[0169] In some embodiments, in the worn state, the distance (e.g., shown as V2 in FIG. 3) between the free end not connected to the core module 11 of the hook-shaped structure 12 and the edge of the earlobe of the ear on the vertical axis of the human body may be 10 mm or less. If the aforementioned distance is too large, it becomes difficult for the capacity of the battery 14 to be sufficient to meet the battery life needs of the earphone 10.

[0170] In some embodiments, the length of the battery magazine 1232 in the longitudinal direction of the hook-shaped structure 12 may be 10 mm to 20 mm. In this way, both the battery life of the earphone 10 and the appearance quality in the worn state are achieved.

[0171] In some embodiments, the battery magazine 1232 may be installed in a hollow cylindrical shape, and the area of the outer surface of the battery magazine 1232 in a reference cross-section perpendicular to the longitudinal direction of the hook-shaped structure 12 is 60 mm 2 ~100 mm 2 and may be. If the aforementioned area is too small, it becomes difficult for the capacity of the battery 14 to be sufficient to meet the battery life needs of the earphone 10. If the aforementioned area is too large, the battery housing 123 is too visible from the front side of the ear, which further affects the appearance quality of the earphone 10 in the worn state.

[0172] Exemplarily, as shown in FIGS. 3 and 1, the earphone 10 may include a core module 11 and a hook-shaped structure 12 connected to the core module 11. The core module 11 may be located on the front side of the ear in the worn state. The free end FE not connected to the hook-shaped structure 12 of the core module 11 may enter the concha cavity of the ear in the worn state. At least a part of the hook-shaped structure 12 may be located on the rear side of the ear in the worn state. The core module 11 may have a thickness direction X, a length direction Y, and a width direction Z that are perpendicular to each other. The thickness direction X is defined as the direction in which the core module 11 approaches or moves away from the ear in the worn state. The length of the core module 11 in the length direction Y may be greater than the width of the core module 11 in the width direction Z. Further, the length of the core module 11 in the length direction Y (e.g., indicated by L in FIG. 3) may be 22 mm to 35 mm. If the length of the core module 11 is too small, it becomes difficult for the free end FE of the core module 11 to enter the concha cavity, and it becomes difficult to clamp the ear together with the hook-shaped structure 12. If the length of the core module 11 is too large, similarly, it becomes difficult for the free end FE of the core module 11 to enter the concha cavity, which in turn affects the wearing of the earphone 10. Further, the hook-shaped structure 12 may have a transition portion 12a connected to the core module 11. The transition portion 12a may be located on the front side of the ear in the worn state. The area of the outer surface of the transition portion 12a in a reference cross-section perpendicular to the length direction of the hook-shaped structure 12 may gradually decrease along the length direction of the hook-shaped structure 12 and in the positive direction away from the core module 11. That is, the transition portion 12a may be provided with a tapered structure so that the overall appearance of the earphone 10 is smoother and more uniform.Based on this, in the worn state, when viewed from the direction where the coronal axis of the human body is located, the connection end CE connected to the hook-shaped structure 12 of the core module 11 is closer to the top of the user's head than the free end FE not connected to the hook-shaped structure 12 of the core module 11, and the included angle between the longitudinal direction Y and the direction where the sagittal axis of the human body is located (for example, indicated by θ in FIG. 3) may be 15° to 60° so as to exceed the recessed area 109 where the transition portion 12a is located between the helix and the tragus of the ear as much as possible. In this way, the risk that the transition portion 12a interferes too much with the user's skin is reduced, which is beneficial to improving the wearing comfort of the earphone 10.

[0173] In some embodiments, for example, as shown in FIG. 7, the hook-shaped structure 12 and the core module 11 may be inserted and fixed in a direction perpendicular to the width direction Z. Based on this, the length of the core module 11 in the longitudinal direction Y is obtained by measurement after disassembling the core module 11 and the hook-shaped structure 12.

[0174] In some embodiments, the width of the core module 11 in the width direction Z (for example, indicated by W in FIG. 3) may be 10 mm to 16 mm. If the width of the core module 11 is too small, the contact area between the core module 11 and the ear is too small, which is likely to cause discomfort during wearing. If the width of the core module 11 is too large, the core module 11 is likely to overly shield the external auditory canal.

[0175] Exemplarily, as shown in FIG. 23, between the edge of the core module 11 side of the orthographic projection of the hook-shaped structure 12 onto a reference plane perpendicular to the thickness direction X (for example, the YZ plane in FIG. 23) and the orthographic projection of the core module 11 onto the same reference plane, there exists a first reference line segment RL1 that is parallel to the width direction Z and has the longest length. Taking the point P1 where the first reference line segment RL1 intersects the orthographic projection of the core module 11 as the starting point of the first reference line segment RL1, and the point P2 where the first reference line segment RL1 intersects the orthographic projection of the hook-shaped structure 12 as the ending point of the first reference line segment RL1. Further, the orthographic projections of the transition portions 12a may each have a continuous arc-shaped inner edge IE and outer edge OE that transition, and the outer edge OE is farther from the first reference line segment RL1 than the inner edge IE in the length direction Y. The overall degree of curvature of the inner edge IE may be greater than the overall degree of curvature of the outer edge OE, thereby making the overall appearance of the transition portion 12a smoother and more uniform.

[0176] In some embodiments, the orthographic projections of the transition portions 12a may be parallel to the length direction Y and may have a second reference line segment RL2, a third reference line segment RL3, a fourth reference line segment RL4, and a fifth reference line segment RL5 that are spaced apart in sequence. The second reference line segment RL2, the third reference line segment RL3, the fourth reference line segment RL4, and the fifth reference line segment RL5 are sequentially spaced apart from the orthographic projection of the core module 11 in the width direction Z. Further, the starting points and ending points of the second reference line segment RL2, the third reference line segment RL3, the fourth reference line segment RL4, and the fifth reference line segment RL5 are respectively on the inner edge IE and the outer edge OE. The length of the second reference line segment RL2 may be 5 mm to 8 mm, and the extension line of the second reference line segment RL2 passes through the 1 / 8 position of the first reference line segment RL1. The length of the third reference line segment RL3 may be 4 mm to 6.3 mm, and the extension line of the third reference line segment RL3 passes through the 1 / 4 position of the first reference line segment RL1. The length of the fourth reference line segment RL4 may be 3.5 mm to 5.4 mm, and the extension line of the fourth reference line segment RL4 passes through the 3 / 8 position of the first reference line segment RL1. The length of the fifth reference line segment RL5 may be 3 mm to 5 mm, and the extension line of the fifth reference line segment RL5 passes through the 1 / 2 position of the first reference line segment RL1.

[0177] In some embodiments, the length of the first reference line segment RL1 may be 13 mm to 20 mm. If the length of the first reference line segment RL1 is too small, it is likely to cause the free end FE of the core module 11 to be unable to enter the concha cavity and the sound emission hole 111a in the core module 11 to be too far away from the external auditory canal. If the length of the first reference line segment RL1 is too large, it is also likely to cause the free end FE to be unable to enter the concha cavity and the external auditory canal to be excessively shielded by the core module 11. In other words, in this way, while enabling the free end FE of the core module 11 to enter the concha cavity, and making the sound emission hole 111a in the core module 11 have an appropriate distance from the external auditory canal, when the external auditory canal is not blocked, the user can hear more sound waves generated by the core module 11.

[0178] In some embodiments, the hook-shaped structure 12 may include an adapter housing 122 connected to the core module 11 and an elastic wire 121 connected to the adapter housing 122. At least a part of the adapter housing 122 may be located on the front side of the ear part in the mounted state, and at least a part of the elastic wire 121 may be located on the rear side of the ear part in the mounted state. In other words, the part of the adapter housing 122 located on the front side of the ear part in the mounted state may be part or all of the transition part 12a. The core module 11 may have an inner surface IS facing the ear part and an outer surface OS facing away from the ear part along the thickness direction X in the mounted state. The area of the outer surface of the adapter housing 122 in a reference cross-section perpendicular to the length direction of the hook-shaped structure 12 may gradually decrease along the length direction of the hook-shaped structure 12 and in the positive direction away from the core module 11, so that the transition part 12a can be installed in a tapered structure. Further, the adapter housing 122 may extend in the thickness direction X toward the side facing away from the outer surface OS of the inner surface IS, so that a part of the hook-shaped structure 12 can be displaced from the projection of the core module 11 in a direction perpendicular to the thickness direction X. Further, in the mounted state, the supporting force of the hook-shaped structure 12 on the earphone 10 at the root of the upper ear of the ear part can be reduced. The plane where the elastic wire 121 is located may intersect the inner surface IS in the non-mounted state, so that a part of the hook-shaped structure 12 can overlap the projection of the core module 11 in a direction perpendicular to the thickness direction X. Further, in the mounted state, the elastic wire 121 is elastically deformed to sandwich the ear part together with the core module 11 and fits the ear part.

[0179] Exemplarily, as shown in FIGS. 7 and 3, the earphone 10 may include a core module 11 and a hook-shaped structure 12 connected to the core module 11. The core module 11 may be located on the front side of the ear in the worn state. The free end FE not connected to the hook-shaped structure 12 of the core module 11 may enter the concha cavity of the ear in the worn state. At least a part of the hook-shaped structure 12 may be located on the rear side of the ear in the worn state. The core module 11 may have a first inner surface IS1 facing the ear along the thickness direction X and an outer surface OS facing away from the ear in the worn state. The thickness direction X is defined as the direction in which the core module 11 approaches or moves away from the ear in the worn state. The hook-shaped structure 12 may have a transition portion 12a connected to the core module 11. The transition portion 12a may be located on the front side of the ear in the worn state and may have a second inner surface IS2 facing the ear along the thickness direction X in the worn state. Further, the first inner surface IS1 may cover at least a part of the tragus of the ear in the worn state. The second inner surface IS2 may be bent in a direction away from the outer surface OS with respect to the first inner surface IS1 in the thickness direction X. For example, the part of the hook-shaped structure 12 located on the front side of the ear in the worn state may be bent with respect to the core module 11. In this way, even when the earphone 10 has to cross the tragus, a space for accommodating the tragus can be formed between the hook-shaped structure 12 and the core module 11, that is, the earphone 10 is prevented from touching the tragus, thereby reducing the risk of the earphone 10 pressing on the tragus and being advantageous for improving the comfort of the earphone 10 in the worn state.

[0180] In some embodiments, the included angle between the second inner surface IS2 and the first inner surface IS1 may be between 119° and 170°. If the aforementioned included angle is too small, it is difficult to achieve the original invention purpose of preventing the earphone 10 from touching the tragus. If the aforementioned included angle is too large, the fit between the earphone 10 and the user's skin in the worn state is likely to deteriorate.

[0181] In some embodiments, the distance between one end of the second inner surface IS2 away from the core module 11 and the first inner surface IS1 in the thickness direction X may be 1.6 mm to 2.4 mm. If the aforementioned distance is too small, it is difficult to achieve the original invention purpose of preventing the earphone 10 from touching the tragus. If the aforementioned distance is too large, the fit between the earphone 10 and the user's skin in the worn state is likely to deteriorate.

[0182] Exemplarily, the transition portion 12a may include an adapter housing 122 connected to the core module 11, and at least a part of the adapter housing 122 may be located on the front side of the ear part in the worn state. In other words, the portion of the adapter housing 122 located on the front side of the ear part in the worn state may be part or all of the transition portion 12a. The adapter housing 122 may be provided with a tapered structure. For example, the area of the outer surface of the adapter housing 122 in a reference cross-section perpendicular to the length direction of the hook-shaped structure 12 may gradually decrease along the length direction of the hook-shaped structure 12 and in the positive direction away from the core module 11. In this way, the transition portion 12a may be provided with a tapered structure so that the overall appearance of the earphone 10 is smoother and more uniform.

[0183] Furthermore, in order to prevent the earphone 10 from touching the tragus in the worn state and enable a part of the hook-shaped structure 12 to be displaced from the projection of the core module 11 in a direction perpendicular to the thickness direction X, the adapter housing 122 may extend toward the side facing away from the outer surface OS of the first inner surface IS1 in the thickness direction X. Furthermore, in the worn state, the supporting force on the earphone 10 at the root of the upper ear of the ear part can be reduced.

[0184] In some embodiments, in the non-worn state, in order for a part of the hook-shaped structure 12 to overlap the projection of the core module 11 in a direction perpendicular to the thickness direction X, the elastic wire 121 may pass through the plane where the first inner surface IS1 is located. Further, in the worn state, the elastic wire 121 elastically deforms to sandwich the ear part together with the core module 11 and fits into the ear part.

[0185] In some embodiments, in the non-worn state, in order for a part of the hook-shaped structure 12 to overlap the projection of the core module 11 in a direction perpendicular to the thickness direction X, the plane where the elastic wire 121 is located may intersect the first inner surface IS1. Further, in the worn state, the elastic wire 121 elastically deforms to sandwich the ear part together with the core module 11 and fits into the ear part. In the non-worn state, the included angle between the elastic wire 121 and the first inner surface IS1 may be 15° to 30°.

[0186] In some embodiments, the core housing 111 may include an internal core housing 1111 and an external core housing 1112 connected to the internal core housing 1111. For example, the two are engaged in the thickness direction X. The internal core housing 1111 may be closer to the ear part than the external core housing 1112 in the worn state, and the sound emission hole 111a may be installed in the internal core housing 1111. Further, at least one of the internal core housing 1111 and the external core housing 1112 may be inserted and fixed to the adapter housing 122. For example, the internal core housing 1111 shown in FIG. 7 is inserted and fixed to the adapter housing 122.

[0187] In some embodiments, the core housing 111 may include an inner core housing 1111 and an outer core housing 1112 connected to the inner core housing 1111. For example, the two may be engaged in the thickness direction X. The inner core housing 1111 may be closer to the ear part than the outer core housing 1112 in the mounted state, and the sound emission hole 111a may be installed in the inner core housing 1111. Further, one of the inner core housing 1111 and the outer core housing 1112 may be installed as an integrally formed structural member with the adapter housing 122, and the other may be fixedly connected to the aforementioned integrally formed structural member. Based on this, for the aforementioned integrally formed structural member, the region corresponding to the speaker 112 can be easily regarded as the inner core housing 1111, and the region installed in the tapered structure or the region corresponding to the electronic component 15 can be easily regarded as the adapter housing 122.

[0188] Exemplarily, as shown in FIGS. 7 and 3, the earphone 10 may include a core module 11 and a hook-shaped structure 12 connected to the core module 11. The core module 11 may be located on the front side of the ear in the worn state, and at least a part of the hook-shaped structure 12 may be located on the rear side of the ear in the worn state. The core module 11 may include a core housing 111 and a speaker 112 installed in the core housing 111. The hook-shaped structure 12 may include an adapter housing 122 connected to the core housing 111, and at least a part of the adapter housing 122 may be located on the front side of the ear in the worn state. Further, as shown in FIGS. 24, 15, and 16, an accommodation cavity 124 and a through hole 1251 communicating with the accommodation cavity 124 may be formed in the adapter housing 122. The earphone 10 may include an electrode terminal 151 at least a part of which is installed in the through hole 1251. Since the accommodation cavity 124 is formed in the adapter housing 122, some components can be accommodated in the accommodation cavity 124, which is advantageous for saving the space of the core module 11 and can make the volume of the speaker 112 as large as possible. Also, the electrode terminal 151 may be installed in the adapter housing 122, which is advantageous for shortening the distance between the electrode terminal 151 and the speaker 112 in the length direction of the hook-shaped structure 12, and by making full use of the magnetic attraction force between the magnetic circuit system (including the magnet) of the speaker 112 and the magnetic attraction structure in the charging case, the electrode terminal 151 can be surely brought into contact with the electrode terminal in the charging case.

[0189] In some embodiments, the electrode terminal 151 may face the front side of the ear in the worn state, whereby the distance between the electrode terminal 151 and the speaker 112 can be made closer, which is advantageous for shortening the distance between the electrode terminal 151 and the speaker 112 in the length direction of the hook-shaped structure 12.

[0190] In some embodiments, the electrode terminal 151 may include a charging positive electrode terminal 1514 and a charging negative electrode terminal 1515 that are spaced apart from each other, and the charging positive electrode terminal 1514 and the charging negative electrode terminal 1515 may be correspondingly installed in their respective through holes 1251 so as to charge the earphone 10 via the electrode terminal 151.

[0191] In some embodiments, the electrode terminal 151 may include a communication terminal 1516 that is spaced apart from the charging positive electrode terminal 1514 and the charging negative electrode terminal 1515, and the communication terminal 1516 may be correspondingly installed in the through hole 1251 so that the earphone 10 can communicate with a charging device such as a charging case.

[0192] Exemplarily, as shown in FIG. 24, the distance between the charging positive electrode terminal 1514 and the charging negative electrode terminal 1515 may be greater than the distance between the charging positive electrode terminal 1514 and the communication terminal 1516, and the distance between the charging positive electrode terminal 1514 and the communication terminal 1516 may be greater than the distance between the communication terminal 1516 and the charging negative electrode terminal 1515. The potential of the charging positive electrode terminal 1514 is generally higher than that of the communication terminal 1516, and the communication terminal 1516 is generally more likely to be damaged by high voltage. In order to avoid or minimize the probability that the charging positive electrode terminal 1514 and the communication terminal 1516 conduct and the communication terminal 1516 is damaged within a limited space, the distance between the charging positive electrode terminal 1514 and the communication terminal 1516 is greater than the distance between the communication terminal 1516 and the charging negative electrode terminal 1515. Also, in order to avoid or reduce the probability of damage to the earphone 10 due to a short circuit between the charging positive electrode terminal 1514 and the charging negative electrode terminal 1515, the distance between the charging positive electrode terminal 1514 and the charging negative electrode terminal 1515 may also be greater than the distance between the communication terminal 1516 and the charging negative electrode terminal 1515. Further, in some embodiments, the distance between the charging positive electrode terminal 1514 and the charging negative electrode terminal 1515 is greater than the distance between the charging positive electrode terminal 1514 and the communication terminal 1516, thereby installing the electrode terminal 151 as concentratedly as possible to reduce the space occupied by the electrode terminal 151, reduce the risk of short circuit between the electrode terminals 151 as much as possible, and minimize the degree of damage to the earphone 10.

[0193] In some embodiments, when viewed from the extending direction of the electrode terminal 151, the lines connecting two of the charging positive electrode terminal 1514, the charging negative electrode terminal 1515, and the communication terminal 1516 may form a scalene triangle.

[0194] In some embodiments, when viewed from the extending direction of the electrode terminal 151, the charging positive electrode terminal 1514, the communication terminal 1516, and the charging negative electrode terminal 1515 may be arranged at intervals from each other, for example, arranged in a straight line in order. When viewed from the extending direction of the electrode terminal 151, the magnet 127 and the core module 11 may be located on both sides of the aforementioned straight line respectively. In this way, when the earphone 10 is placed in the charging case, the magnetic circuit system of the speaker 112 and the permanent magnet or soft magnet in the charging case form a first magnetic attraction pair, and the magnet 127 and another permanent magnet or soft magnet in the charging case form a second magnetic attraction pair. Therefore, the electrode terminal 151 is located between the first magnetic attraction pair and the second magnetic attraction pair and is surely in contact with the electrode terminal in the charging case. Further, the area of the outer surface of the adapter housing 122 in the reference cross-section perpendicular to the length direction of the hook-shaped structure 12 may gradually decrease along the length direction of the hook-shaped structure 12 and in the positive direction away from the core module 11, that is, the adapter housing 122 may be installed in a tapered structure so that the transition portion 12a of the hook-shaped structure 12 can be installed in the tapered structure, whereby the overall appearance of the earphone 10 is smoother and more uniform. There are a first distance, a second distance, and a third distance between the center of the magnet 127 and the centers of the charging positive electrode terminal 1514, the communication terminal 1516, and the charging negative electrode terminal 1515 respectively, and the third distance may be greater than the first distance and the second distance respectively. In this way, it is advantageous to reduce the risk that the wall thickness of the adapter housing 122 is too small because the magnet 127 is too close to the charging negative electrode terminal 1515, thereby increasing the structural strength of the adapter housing 122.

[0195] Exemplarily, as shown in FIGS. 7 and 24, the core housing 111 may have a first inner surface IS1 that faces the ear part along the thickness direction X in the mounted state and an outer surface OS that faces away from the ear part. The thickness direction X is defined as the direction in which the core module 11 approaches or moves away from the ear part in the mounted state. The adapter housing 122 may have a second inner surface (e.g., the second inner surface IS2 of the transition part 12a) that faces the ear part along the thickness direction X in the mounted state. The second inner surface IS2 may be bent in a direction away from the outer surface OS with respect to the first inner surface IS1 in the thickness direction X. For example, the adapter housing 122 is bent with respect to the core module 11. Further, the electrode terminal 151 is exposed on the second inner surface IS2 so as to contact the electrode terminal in the charging case, and the extending direction of the electrode terminal 151 may intersect the winding direction of the coil of the speaker 112 (i.e., the voice coil, e.g., indicated by C1 in FIG. 25). In this way, it is advantageous to make the attracting force directions of the first magnetic attraction pair and the second magnetic attraction pair intersect, reducing the risk of the earphone 10 swaying in the charging case. Thereby, the electrode terminal 151 reliably contacts the electrode terminal in the charging case.

[0196] Furthermore, the core module 11 may include a main control circuit board 13 installed in the core housing 111 and coupled to the speaker 112. The main control circuit board 13 and the speaker 112 are stacked and installed in the thickness direction X and are located on the side facing the outer surface OS of the speaker 112. In this way, when the dimensions of the core housing 111 in a reference cross-section perpendicular to the thickness direction X are limited, it is advantageous to increase the area of the speaker 112 and to bring the speaker 112 closer to the permanent magnet or soft magnet in the charging case. Thereby, the attracting force of the first magnetic attraction pair increases, and the electrode terminal 151 reliably contacts the electrode terminal in the charging case.

[0197] Based on the above related description, the earphone 10 may include a charging positive electrode terminal 1514, a charging negative electrode terminal 1515, and a communication terminal 1516 that are installed at intervals from each other. The charging positive electrode terminal 1514, the charging negative electrode terminal 1515, and the communication terminal 1516 may be located on the same side of the ear part in the worn state. For example, the three may be located on the front side of the ear part. The distance between the charging positive electrode terminal 1514 and the charging negative electrode terminal 1515 may be greater than the distance between the charging positive electrode terminal 1514 and the communication terminal 1516, and the distance between the charging positive electrode terminal 1514 and the communication terminal 1516 may be greater than the distance between the communication terminal 1516 and the charging negative electrode terminal 1515. The potential of the charging positive electrode terminal 1514 is generally higher than the potential of the communication terminal 1516, and the communication terminal 1516 is generally more likely to be damaged by high voltage. In order to avoid or reduce the probability that the communication terminal 1516 is damaged due to conduction between the charging positive electrode terminal 1514 and the communication terminal 1516 within a limited space, the distance between the charging positive electrode terminal 1514 and the communication terminal 1516 is greater than the distance between the communication terminal 1516 and the charging negative electrode terminal 1515. Also, in order to avoid or reduce the probability of damage to the earphone 10 due to a short circuit between the charging positive electrode terminal 1514 and the charging negative electrode terminal 1515, the distance between the charging positive electrode terminal 1514 and the charging negative electrode terminal 1515 may also be greater than the distance between the communication terminal 1516 and the charging negative electrode terminal 1515. Further, in some embodiments, the distance between the charging positive electrode terminal 1514 and the charging negative electrode terminal 1515 is greater than the distance between the charging positive electrode terminal 1514 and the communication terminal 1516, thereby installing the electrode terminals 151 as intensively as possible to reduce the space occupied by the electrode terminals 151, and reducing the risk of short circuit between the electrode terminals 151 as much as possible, and minimizing the degree of damage to the earphone 10.

[0198] In some embodiments, at least one of the charging positive electrode terminal 1514, the charging negative electrode terminal 1515, and the communication terminal 1516 is installed in the adapter housing 122. For example, the three are installed in the adapter housing 122, and also for example, the three are installed in the battery housing 123.

[0199] In some embodiments, at least one of the charging positive electrode terminal 1514, the charging negative electrode terminal 1515, and the communication terminal 1516 is installed in the core housing 111. For example, any one of them is installed in the core housing 111, and the remaining two are installed in the adapter housing 122.

[0200] Exemplarily, as shown in FIGS. 25 and 7, the core module 11 includes a core housing 111, a speaker 112 installed in the core housing 111, and a main control circuit board 13. The speaker 112 is electrically connected to the main control circuit board 13. The main control circuit board 13 performs signal processing, transmits the processed electrical signal to the speaker 112, and the speaker 112 converts the received electrical signal into mechanical vibration. The speaker 112 may include a first coil 1125 (i.e., the voice coil) coupled to the main control circuit board 13. The first coil 1125 may enter into the magnetic circuit system of the speaker 112, and a second coil 134 may be installed on the main control circuit board 13. Further, the winding axis direction of the second coil 134 (e.g., indicated by C2 in FIG. 25) and the winding axis direction of the first coil 1125 (e.g., indicated by C1 in FIG. 25) may be installed to intersect. In this way, it is advantageous to weaken the electromagnetic coupling between the second coil 134 and the first coil 1125, thereby reducing the mutual influence between the two coils. For example, the risk that the current change of the second coil 134 generates noises such as "rustling" and "creaking sound" in the speaker 112 due to electromagnetic coupling is reduced. Also, since the electromagnetic coupling between the first coil 1125 and the second coil 134 becomes weak, the main control circuit board 13 can be brought closer to the speaker 112, which is advantageous for making the structure of the core module 11 more compact.

[0201] In some embodiments, the main control circuit board 13 and the speaker 112 may be stacked and installed in the winding axis direction of the first coil 1125. Thus, when the volume of the core housing 111 is constant, it is advantageous to install a larger speaker 112 in the core housing 111, thereby increasing the sensitivity and maximum volume of the earphone 10. The winding axis direction of the second coil 134 and the winding axis direction of the first coil 1125 may be installed orthogonally. For example, the winding axis direction of the second coil 134 and the winding axis direction of the first coil 1125 are parallel to the length direction Y and the thickness direction X respectively, further weakening the electromagnetic coupling between the second coil 134 and the first coil 1125. Furthermore, since the electromagnetic coupling between the second coil 134 and the first coil 1125 is weakened, the distance between the main control circuit board 13 and the speaker 112 in the winding axis direction of the first coil 1125 can be further reduced, thereby making the installation in the thickness direction X of the core module 11 more compact and advantageous for reducing the volume of the core module 11. In some embodiments, the distance between the main control circuit board 13 and the speaker 112 in the winding axis direction of the first coil 1125 may be 3 mm or less. The second coil 134 may be installed on the side of the main control circuit board 13 facing away from the speaker 112 or on the other side facing the speaker 112. For example, the second coil 134 is installed on the side of the main control circuit board 13 facing away from the speaker 112, and the distance between the main control circuit board 13 and the speaker 112 in the winding axis direction of the first coil 1125 is 1 mm or less. Also for example, the second coil 134 is installed on the other side of the main control circuit board 13 facing the speaker 112, and the distance between the main control circuit board 13 and the speaker 112 in the winding axis direction of the first coil 1125 is 2 mm or less.

[0202] In the present application, the core module 11 may include components such as an inductor or a transceiver coil, and the inductor or transceiver coil may include a second coil 134. In some embodiments, the core module 11 may include a switching power supply, which can achieve voltage conversion, may be installed on the main control circuit board 13 and electrically connected to the main control circuit board 13, and the inductance of the switching power supply may be the second coil 134 that realizes energy storage, filtering, etc. In some embodiments, the core module 11 may include a communication device, which can realize cooperation between the earphone 10 and terminal devices such as mobile phones and computers. The communication device is installed on the main control circuit board 13 and electrically connected to the main control circuit board 13. The communication device may include a transceiver coil for transmitting and receiving signals, and the transceiver coil of the communication device may be the second coil 134.

[0203] Exemplarily, as shown in FIGS. 26 and 7, the main control circuit board 13 may include a substrate 135, a metal wiring 136 formed on the substrate 135, and a load 137 installed on the substrate 135. The substrate 135 may have electrical insulation. The metal wiring 136 may be printed on the substrate 135 by a technique such as copper etching. The load 137 may be welded to the substrate 135 by a technique such as surface mounting and connected to the metal wiring 136. The main control circuit board 13 can use any of a single panel, a double panel, and a multilayer substrate as required. The metal wiring 136 may include a power supply wiring 1361 and a circuit wiring 1362 that connect the load 137 to an external power supply (for example, a battery 14). The power supply wiring 1361 and the circuit wiring 1362 are installed in parallel, and the current direction of the power supply wiring 1361 is opposite to the current direction of the circuit wiring 1362 so that a circuit loop can be formed between the load 137 and the external power supply. Further, the absolute value of the difference between the width of either the power supply wiring 1361 or the circuit wiring 1362 and the average value of the widths and the ratio to the average value of the widths may be 20% or less. The aforementioned ratio is preferably 15% or less, and more preferably 10% or less. The aforementioned average value of the widths is defined as the average value of the widths of the power supply wiring 1361 and the circuit wiring 1362. In short, the aforementioned ratio can evaluate the degree to which the width of either the power supply wiring 1361 or the circuit wiring 1362 deviates from the average value of the widths of both. Therefore, the smaller the aforementioned ratio, the closer the widths of the power supply wiring 1361 and the circuit wiring 1362 become. Thus, since the current direction of the power supply wiring 1361 is opposite to the current direction of the circuit wiring 1362, the magnetic field generated by the power supply wiring 1361 and the magnetic field generated by the circuit wiring 1362 cancel each other out when the vectors are superimposed in three-dimensional space. Since the difference between the width of the power supply wiring 1361 and the width of the circuit wiring 1362 is small, the total magnetic field strength after the vectors of the magnetic field generated by the power supply wiring 1361 and the magnetic field generated by the circuit wiring 1362 are superimposed in three-dimensional space becomes small, which is advantageous for reducing electromagnetic interference to other electronic components of the metal wiring 136 on the main control circuit board 13. For example, it reduces the risk of generating noises such as "rustling" and "creaking" in the speaker 112 due to the magnetic field generated by the metal wiring 136 on the main control circuit board 13.

[0204] In some embodiments, the extending direction of the power supply wiring 1361 and the extending direction of the circuit wiring 1362 may be installed in parallel, which is advantageous for canceling out the magnetic field generated by the power supply wiring 1361 and the magnetic field generated by the circuit wiring 1362. The thickness of the power supply wiring 1361 and the thickness of the circuit wiring 1362 may be equal, which is advantageous for simplifying the forming process of the metal wiring 136. The width of the power supply wiring 1361 and the width of the circuit wiring 1362 may be equal, which is advantageous for canceling out the magnetic field generated by the power supply wiring 1361 and the magnetic field generated by the circuit wiring 1362. Further, the length of the power supply wiring 1361 and the length of the circuit wiring 1362 may be equal, which is advantageous for canceling out the magnetic field generated by the power supply wiring 1361 and the magnetic field generated by the circuit wiring 1362. Note that the thickness of the circuit wiring 1362 may refer to the dimension in the thickness direction of the main control circuit board 13 (for example, the direction parallel to the thickness direction X).

[0205] In some embodiments, the power supply wiring 1361 and the circuit wiring 1362 may be installed in the same layer on the substrate 135.

[0206] In some embodiments, the power supply wiring 1361 and the circuit wiring 1362 may be installed in different layers on the substrate 135, and the orthographic projections of the power supply wiring 1361 and the circuit wiring 1362 in the thickness direction of the main control circuit board 13 may at least partially overlap.

[0207] In some embodiments, the load 137 may be a component such as a master chip or a communication chip.

[0208] In some embodiments, the main control circuit board 13 may include a connector 138, and the connector 138 may be installed on the board 135 by a technique such as surface mounting. One end of each of the power supply wiring 1361 and the circuit wiring 1362 is connected to the connector 138, and the other end is connected to the load 137 so that the load 137 is connected to an external power supply. For example, the battery 14 is used as an external power supply, is connected to one end of the flexible circuit board 16 via the conductive wire 129, the other end of the flexible circuit board 16 is engaged with the connector 138, whereby the battery 14 is connected to the main control circuit board 13.

[0209] The specific embodiments described in this application are merely illustrative, and one or more technical features in the specific embodiments are optional or additional, and are not the necessary technical features constituting the inventive concept of this application. In other words, the protection scope of this application covers the specific embodiments and is much larger than that. Also, the specific embodiments described in this application are merely illustrative and are not for limiting the protection scope of this application. Any equivalent device or equivalent process conversion based on the content of the specification and drawings of this application, or direct or indirect application to other related technical fields, are all similarly included within the patent protection scope of this application.

Description of Reference Numerals

[0210] 10 Earphone 11 Core Module 111 Core Housing 111a Sound Emission Hole 112 Speaker 1111 Inner Core Housing 1112 Outer Core Housing 12 Hook-like Structure 121 Elastic Wire 122 Adapter Housing 1251, 1253 Through Hole 1252 Blind Hole 123 Battery Housing 124 Accommodation Cavity 126 Boss 127 Magnet 13 Main control circuit board 151 Electrode terminal 1511, 1514 Charging positive electrode terminals 1512, 1515 Charging negative electrode terminals 1513 Detection terminal 1516 Communication terminal

Claims

1. An earphone including a core module and a hook-shaped structure connected to the core module, wherein the core module is located on the front side of the ear in the worn state, at least a part of the hook-shaped structure is located on the rear side of the ear in the worn state, the core module includes a core housing and a speaker installed in the core housing, the hook-shaped structure includes an adapter housing connected to the core housing, at least a part of the adapter housing is located on the front side of the ear in the worn state, a receiving cavity and a through hole communicating with the receiving cavity are formed in the adapter housing, and the earphone includes electrode terminals at least a part of which are installed in the through hole. An earphone, characterized by the above.

2. The earphone according to claim 1, wherein the electrode terminal faces the front side of the ear in the worn state.

3. The earphone according to claim 1, wherein the electrode terminals include a charging positive terminal, a charging negative terminal, and a communication terminal installed at intervals from each other.

4. The earphone according to claim 3, wherein the distance between the charging positive terminal and the charging negative terminal is greater than the distance between the charging positive terminal and the communication terminal, and the distance between the charging positive terminal and the communication terminal is greater than the distance between the communication terminal and the charging negative terminal.

5. The earphone according to claim 4, wherein the charging positive terminal, the communication terminal, and the charging negative terminal are arranged in a straight line in order when viewed from the extending direction of the electrode terminals.

6. The earphone according to claim 5, wherein a blind hole not communicating with the receiving cavity is formed in the adapter housing, a magnet is installed in the blind hole, and the magnet and the electrode terminals are seen on the same side surface of the adapter housing.

7. The earphone according to claim 6, wherein the magnet and the core module are located on both sides of a straight line segment respectively when viewed from the extending direction of the electrode terminals.

8. The area of the outer surface of the adapter housing in a reference cross-section perpendicular to the length direction of the hook-shaped structure gradually decreases along the length direction of the hook-shaped structure and in the positive direction away from the core module. There are a first distance, a second distance, and a third distance between the center of the magnet and the centers of the charging positive electrode terminal, the communication terminal, and the charging negative electrode terminal, respectively, and the third distance is greater than the first distance and the second distance, respectively. The earphone according to claim 7, characterized in that.

9. The hook-shaped structure includes an elastic wire connected to the adapter housing and an elastic coating layer covering at least the adapter housing and the elastic wire. At least a part of the elastic wire is located on the rear side of the ear part in the worn state, and the magnet is not exposed by the elastic coating layer, and the electrode terminal is exposed. The earphone according to claim 6, characterized in that.

10. The core housing has a first inner surface facing the ear part and an outer surface facing away from the ear part along the thickness direction in the worn state. The thickness direction is defined as the direction in which the core module approaches or moves away from the ear part in the worn state. The adapter housing has a second inner surface facing the ear part along the thickness direction in the worn state. The second inner surface is bent in a direction away from the outer surface with respect to the first inner surface in the thickness direction. The electrode terminal is exposed on the second inner surface, and the extending direction of the electrode terminal intersects the winding direction of the coil of the speaker. The earphone according to claim 1, characterized in that.

11. The core module includes a main control circuit board installed in the core housing and coupled to the speaker. The main control circuit board and the speaker are stacked and installed in the thickness direction and are located on the side facing the outer surface of the speaker. The earphone according to claim 10, characterized in that.

12. The core housing includes an inner core housing and an outer core housing covering the inner core housing. The inner core housing is closer to the ear part than the outer core housing in the worn state, and at least one of the inner core housing and the outer core housing is inserted and fixed to the adapter housing. Alternatively, the core housing includes an inner core housing and an outer core housing that covers the inner core housing. The inner core housing is closer to the ear part than the outer core housing in the mounted state. One of the inner core housing and the outer core housing is installed as a structural member integrally formed with the adapter housing. The earphone according to claim 1, characterized in that.

13. In the mounted state, a sound emission hole is installed on the side of the core housing facing the ear part. The sound wave generated by the speaker is propagated to the outside through the sound emission hole. The free end not connected to the hook-shaped structure of the core module enters the concha cavity of the ear part in the mounted state, whereby the core module and the concha cavity are engaged to form an auxiliary cavity communicating with the ear canal of the ear part. At least a part of the sound emission hole is located in the auxiliary cavity. The earphone according to claim 1, characterized in that.

14. The auxiliary cavity is of a semi-open type. The earphone according to claim 13, characterized in that.

15. An earphone including a core module and a hook-shaped structure connected to the core module. The core module is located on the front side of the ear part in the mounted state. At least a part of the hook-shaped structure is located on the rear side of the ear part in the mounted state. The earphone includes a charging positive terminal, a charging negative terminal, and a communication terminal installed at intervals from each other. The charging positive terminal, the charging negative terminal, and the communication terminal are located on the same side of the ear part in the mounted state. The distance between the charging positive terminal and the charging negative terminal is greater than the distance between the charging positive terminal and the communication terminal. The distance between the charging positive terminal and the communication terminal is greater than the distance between the communication terminal and the charging negative terminal. The earphone, characterized in that.

Images