Earphone Charging Box

Abstract

The present application mainly relates to a charging box for an earphone, the earphone including a core module and a hook-shaped structure connected to the core module. The charging box includes a lower housing assembly. The lower housing assembly is provided with a contoured groove for accommodating the earphone, the contoured groove including a first contoured groove area corresponding to the core module and a second contoured groove area corresponding to the hook-shaped structure. The projections of the first contoured groove area and the second contoured groove area in a first reference direction overlap, and the projections of the first contoured groove area and the second contoured groove area in a second reference direction perpendicular to the first reference direction overlap. In this manner, the charging box of the present application can have a small volume.

Description

[Technical field]

[0001] The present application relates to the technical field of electronic devices, and in particular to a charging box for earphones. [Background technology]

[0002] As electronic devices continue to become more and more popular, they have become an indispensable social and entertainment tool in people's daily lives, and people's requirements for electronic devices are also becoming higher and higher. Electronic devices such as earphones are widely applied to people's daily lives, and by using them in cooperation with terminal devices such as mobile phones and computers, users can enjoy a feast of hearing. According to the operating principle of earphones, they are generally divided into air conduction earphones and bone conduction earphones, according to the manner in which users wear earphones, they are generally divided into headphones, ear-hook earphones and in-ear earphones, and according to the interaction manner between the earphones and electronic devices, they are generally divided into wired earphones and wireless earphones. In addition, earphones may be stored in a corresponding charging box in scenes such as when the amount of electricity is insufficient and when not in use, so as to make it easier to charge and store them. In the related art, there is a technical problem that the charging box of the earphone is large in volume and difficult to carry. Summary of the Invention [Means for solving the problem]

[0003] The present application provides a charging box for an earphone, the earphone including a core module and a hook-shaped structure connected to the core module. The charging box includes a lower housing assembly. The lower housing assembly is provided with a contoured groove for accommodating the earphone, the contoured groove including a first contoured groove area corresponding to the core module and a second contoured groove area corresponding to the hook-shaped structure. The projections of the first contoured groove area and the second contoured groove area in a first reference direction overlap, and the projections of the first contoured groove area and the second contoured groove area in a second reference direction perpendicular to the first reference direction overlap. In this manner, the charging box of the present application can have a small volume.

[0004] In some embodiments, a projection of a first portion of the second contoured groove area and the first contoured groove area into a first reference direction overlaps, and a projection of a second portion of the second contoured groove area and the first contoured groove area into a second reference direction overlaps.

[0005] In some embodiments, in the first reference direction, the first portion of the second contoured groove area is located on a side of the first contoured groove area away from an edge of the lower housing assembly adjacent to the first contoured groove area.

[0006] In some embodiments, in the second reference direction, a second portion of the second contoured groove area is located on a side of the first contoured groove area away from an edge of the lower housing assembly adjacent to the first contoured groove area.

[0007] In some embodiments, the lower housing assembly includes two contoured grooves that accommodate two earbuds to be worn on a left and right ear of a user, respectively, and the core modules of the two earbuds are spaced apart along the second reference direction.

[0008] In some embodiments, the lower housing assembly includes two contoured grooves, and second contoured groove regions of the two contoured grooves are positioned across one another so that when the two contoured grooves each accommodate an earbud, the hook-like structures of the two earbuds overlap one another.

[0009] In some embodiments, the hook-like structure includes a battery housing and an elastic portion connecting the battery housing and the core module, and the two second contoured groove areas are positioned such that the elastic portions of the earbuds overlap each other when the two earbuds are accommodated.

[0010] In some embodiments, the elastic portion is arranged in an arc shape, forming two overlapping points when the elastic portions of the two earbuds overlap each other.

[0011] In some embodiments, the two profiling grooves are mirror images of each other with respect to a line connecting the two overlapping points as an axis of symmetry, and the direction of the line connecting the two overlapping points is parallel to the first reference direction or the second reference direction.

[0012] In some embodiments, the two second contoured groove regions are surrounded by a hook-like structure, and the regions located between the two overlapping points are integrally integrated with each other.

[0013] In some embodiments, the two second contoured groove regions are surrounded by hook-like structures, and an island is formed in the region located between the two overlapping points.

[0014] The beneficial effects of the present application are as follows: the projections of the first and second groove areas in the first reference direction overlap, and the projections of the first and second groove areas in the second reference direction overlap, so that when the earphone is inserted into the corresponding groove, the projection length of the charging box occupied by the second groove area in the first reference direction and the projection length of the charging box occupied by the first groove area in the first reference direction overlap, and the projection length of the charging box occupied by the second groove area in the second reference direction and the projection length of the charging box occupied by the first groove area in the second reference direction overlap, thereby reducing the volume of the charging box and making it easier for users to carry it.

[0015] In order to more clearly describe the technical means in the embodiments of the present application, the following briefly introduces drawings necessary for the description of the embodiments. 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 any creative efforts. [Brief description of the drawings]

[0016] [Figure 1] 2 is a schematic diagram of a front profile of a user's ear as described herein; FIG. [Diagram 2] 1 is a schematic diagram illustrating the configuration of an earphone according to an embodiment of the present application. [Diagram 3] 1 is a schematic diagram of an embodiment of an earphone according to the present application in a worn state. [Figure 4] 1 is a schematic diagram illustrating the configuration of an earphone according to an embodiment of the present application. [Diagram 5] 1 is a schematic diagram illustrating the configuration of an earphone according to an embodiment of the present application. [Figure 6] FIG. 10 is a comparative diagram of frequency response curves measured at the same listening position when the core module in one embodiment of the earphone according to the present application is located at different positions in the ear part. [Figure 7] 3 is a cross-sectional view taken along the A1-A1 direction of the embodiment of the earphone in FIG. 2. FIG. [Figure 8] 3 is a cross-sectional view taken along the A2-A2 direction of the embodiment of the earphone in FIG. 2. FIG. [Figure 9] 1 is a schematic diagram illustrating the configuration of an earphone according to an embodiment of the present application. [Figure 10] FIG. 2 is a schematic diagram of an embodiment of a core housing according to the present application. [Figure 11] FIG. 2 is a schematic diagram of an embodiment of a core housing according to the present application. [Figure 12] 1 is a schematic diagram of an embodiment of a bracket according to the present application; [Figure 13] FIG. 9 is an enlarged view of area B1 of the earphone according to the embodiment of the present invention in FIG. 8. [Figure 14] FIG. 9 is an enlarged view of area B2 of the earphone according to the embodiment of the present invention in FIG. 8. [Figure 15] FIG. 2 is a schematic diagram of one embodiment of a hook-like structure according to the present application. [Figure 16] 16 is a cross-sectional view taken along the A3-A3 direction of one embodiment of the hook-shaped structure in FIG. 15. FIG. [Figure 17] 16 is a cross-sectional view of an embodiment of the hook-shaped structure in FIG. 15 taken along another cutting direction perpendicular to the A3-A3 cutting direction. FIG. [Figure 18] FIG. 16 is an exploded view of one embodiment of the hook-like structure in FIG. 15. [Figure 19] FIG. 1 is a schematic diagram illustrating a charging box according to an embodiment of the present invention. [Figure 20] FIG. 20 is a schematic diagram of the charging box according to the embodiment of the present invention after the earphones are accommodated in the charging box according to the embodiment of the present invention. [Figure 21] FIG. 1 is a schematic diagram illustrating a charging box according to an embodiment of the present invention. [Figure 22] 22 is a cross-sectional view taken along the A4-A4 cutting direction of the embodiment of the charging box in FIG. 21 after it has been covered. [Diagram 23] FIG. 23 is a schematic diagram of an embodiment of the charging box in FIG. 22. [Figure 24] 20 is a cross-sectional view taken along the A5-A5 direction of the charging box according to the embodiment of the present invention shown in FIG. 19. [Diagram 25] 1 is a schematic diagram showing a charging box according to the present application having a stopper portion installed on an upper housing assembly; [Figure 26] 26 is a schematic configuration diagram of the upper housing assembly in FIG. 25 from another viewing angle, in which a stopper portion is provided. FIG. [Figure 27] FIG. 2 is a cross-sectional view of an embodiment of a charging box of the present application in an open state. [Figure 28] FIG. 2 is an exploded view of an embodiment of a position limiting mechanism for the charging box of the present application. [Figure 29] FIG. 29 is a partial schematic diagram of an embodiment of the position limiting mechanism in FIG. 28, not exploded. [Diagram 30] FIG. 13 is an exploded view of another embodiment of a position limiting mechanism for the charging box of the present application. [Diagram 31] FIG. 31 is a partial schematic diagram of an embodiment of the position limiting mechanism in FIG. 30, not exploded. [Diagram 32] 32 is a cross-sectional view of the position limiting structure in FIG. 31 taken along the line A6-A6. [Diagram 33] FIG. 2 is a cross-sectional view of an embodiment of the charging box of the present application in a closed state. [Diagram 34] 13 is a schematic diagram of a magnetic field simulation result in a Hall sensor of an embodiment of the charging box of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] The present application will be described in more detail with reference to the drawings and examples below. Note that the following examples are merely for the purpose of explaining the present application and do not limit the scope of the present application. Similarly, the following examples are merely some of the examples of the present application, and are not all of the examples. All other examples obtained by those skilled in the art without any creative effort are all included in the scope of protection of the present application.

[0018] Reference to an "embodiment" in this application means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of this application. A person skilled in the art can explicitly or implicitly understand that the embodiment described in this application can be combined with other embodiments.

[0019] As shown in FIG. 1, the user's ear 100 may include physiological parts such as an external auditory canal 101, a concha cavity 102, a concha navicular 103, a triangular fossa 104, an antihelix 105, a scaphoid fossa 106, a helix 107, and an antitragus 108. The external auditory canal 101 has a certain depth and extends to the eardrum of the ear, but for convenience of explanation, as shown in FIG. 1, in this application, unless otherwise specified, the external auditory canal 101 specifically refers to an entrance (i.e., an ear canal) away from the eardrum. Furthermore, physiological parts such as the concha cavity 102, the concha navicular 103, and the triangular fossa 104 have a certain volume and depth, and the concha cavity 102 communicates directly with the external auditory canal 101, i.e., the aforementioned ear canal can be simply considered to be located at the bottom of the concha cavity 102.

[0020] Furthermore, since different users may have individual differences, the ear parts have different shapes, sizes, and other dimensional differences. In order to facilitate the description and reduce (eventually eliminate) the individual differences of different users, a simulator such as the GRAS 45BC KEMAR including a head and its (left and right) ear parts can be manufactured based on the ANSI: S3.36, S3.25, and IEC: 60318-7 standards. Therefore, the descriptions in this application of "a user wears an earphone", "the earphone is in a wearing state", and "in a wearing state" may refer to the earphone of this application being worn in the ear part of the simulator. Of course, since different users have individual differences, there may be a certain difference between the situation in which the earphone is worn by different users and the situation in which the earphone is worn in the ear part of the simulator, but such a difference should be tolerated.

[0021] In addition, in the fields of medicine, anatomy, and the like, three basic cutting planes of the human body, the sagittal plane, the coronal plane, and the horizontal plane, and three basic axes, the sagittal axis, the coronal axis, and the vertical axis, can be defined. The sagittal plane is a cutting plane perpendicular to the ground cut along the front-back direction of the body, dividing the human body into two parts, the left and right, the coronal plane is a cutting plane perpendicular to the ground cut along the left-right direction of the body, dividing the human body into two parts, the front and the back, and the horizontal plane is a cutting plane parallel to the ground cut along the up-down direction of the body, dividing the human body into two parts, the top and the bottom. Accordingly, the sagittal axis is an axis perpendicular to the coronal plane along the front-back direction of the body, the coronal axis is an axis perpendicular to the sagittal plane along the left-right direction of the body, and the vertical axis is an axis perpendicular to the horizontal plane along the up-down direction of the body. Furthermore, the "front side of the ear" in this application is a concept relative to the "rear side of the ear", the former being the side of the ear away from the head and the latter being the side of the ear facing the head, both being relative to the user's ear. When the ear of the simulator is viewed from the direction in which the coronal axis of the human body is located, a schematic diagram of the front profile of the ear shown in FIG. 1 is obtained.

[0022] Exemplarily, as shown in FIG. 2 to FIG. 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 being located on the front side of the ear part in the worn state, and at least a part of the hook-shaped structure 12 being located on the rear side of the ear part in the worn state, so that 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 that is not connected to the hook-shaped structure 12. Furthermore, the core module 11 is installed so as not to block the ear canal in the worn state, so that the earphone 10 can be an "open earphone". Because there are individual differences among different users, when the earphone 10 is worn by different users, the core module 11 may partially block the ear canal, but the ear canal is still not blocked.

[0023] In order to improve the stability of the earphone 10 in the worn state, the earphone 10 can use any one of the following methods or a combination thereof. The first is that at least a part of the hook-shaped structure 12 is installed as a conforming structure that fits at least one of the rear side of the ear part and the head, and the contact area between the hook-shaped structure 12 and the ear part and / or the head is increased, thereby increasing the resistance of the earphone 10 to fall off from the ear part. The second is that at least a part of the hook-shaped structure 12 is installed as an elastic structure so as to have a certain amount of deformation in the worn state, and the positive pressure of the hook-shaped structure 12 against the ear part and / or the head is increased, thereby increasing the resistance of the earphone 10 to fall off from the ear part. The third is that at least a part of the hook-shaped structure 12 is installed so as to abut against the head in the worn state and generate a reaction force that presses the ear part, and the core module 11 is pressed against the front side of the ear part, thereby increasing the resistance of the earphone 10 to fall off from the ear part. The fourth is that the core module 11 and the hook-like structure 12 are installed so as to clamp physiological parts such as the antihelix region and the concha region from both the front and rear sides of the ear part when worn, thereby increasing the resistance of the earphone 10 to falling off from the ear part. The fifth is that the core module 11 or the auxiliary structure connected thereto is installed so as to be at least partially inserted into physiological parts such as the concha cavity, the concha navicularis, the triangular fossa, and the navicular fossa, thereby increasing the resistance of the earphone 10 to falling off from the ear part.

[0024] 3, in the worn state, the free end FE of the core module 11 may be inserted into the cavity of the concha. The core module 11 and the hook-shaped structure 12 are installed so as to clamp the ear region corresponding to the cavity of the concha from both the front and rear sides of the ear region, thereby increasing the resistance of the earphone 10 to falling off from the ear, and further improving the stability of the earphone 10 in the worn state. For example, the free end FE is pressed into the cavity of the concha in the thickness direction X, and for example, the free end FE abuts against the cavity of the concha in the longitudinal direction Y and the width direction Z.

[0025] In addition, in the worn state, the free end FE of the core module 11 may be inserted into the cavity of the concha, or may be orthogonally projected to be accommodated in the antihelix, or may be orthogonally projected to be accommodated in a position on either the left or right side of the head and in front 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 in a wearing position such as the cavity of the concha, the antihelix, or the front of the ear.

[0026] Illustratively, as shown in FIG. 3 and FIG. 4, the core module 11 may have an inner surface IS toward the ear part along the thickness direction X in the worn state, an outer surface OS away from the ear part, and a connection surface connecting the inner surface IS and the outer surface OS. The thickness direction X may be defined as a direction in which the core module 11 approaches or moves away from the ear part in the worn state. Furthermore, at least a part of the connection surface is located in the concha cavity in the worn state and forms a first contact area with the front side of the ear part region, and the hook-shaped structure 12 forms a second contact area with the rear side of the ear part region in the worn state, and the second contact area and the first contact area at least partially overlap in the ear thickness direction of the ear part region. In this way, the core module 11 and the hook-shaped structure 12 can not only clamp the ear part from both the front and rear sides of the ear part, but also the clamping force formed is mainly manifested as a compressive stress, which is advantageous for improving the stability and comfort of the earphone 10 in the worn state.

[0027] In addition, in the worn state, the core module 11 may be installed in a shape such as a circle, an ellipse, a rounded square, or a rounded rectangle when viewed from the direction in which the coronal axis is located. When the core module 11 is installed in a shape such as a circle or an ellipse, the above-mentioned connection surface may be an arc-shaped side surface of the core module 11, and when the core module 11 is installed in a shape such as a rounded square or a rounded rectangle, the above-mentioned 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. Furthermore, the core module 11 may have a longitudinal direction Y and a width direction Z that are perpendicular to the thickness direction X and perpendicular to each other. The longitudinal direction Y may be defined as a direction in which the core module 11 approaches or moves away from the back of the user's head in the worn state, and the width direction Z may be defined as a direction in which the core module 11 approaches or moves away from the top of the user's head in the worn state. Therefore, for convenience of explanation, in this embodiment, an example in which the core module 11 is installed in a rounded rectangle will be described as an example. The length of the core module 11 in the longitudinal direction Y may be greater than the width of the core module 11 in the width direction Z.

[0028] 2, 3, and 5, in the worn state, the connection end CE is closer to the vertex than the free end FE so that the free end FE is inserted into the cavity of the concha when viewed from the direction in which the coronal axis of the human body is located. Based on this, the included angle between the longitudinal direction Y and the direction in which the sagittal axis of the human body is located may be 15° to 60°. If the included angle is too small, it is likely that the free end FE cannot be inserted into the cavity of the concha and the sound emission hole 111a in the core module 11 is too far from the ear canal, and if the included angle is too large, it is likely that the free end FE cannot be inserted into the cavity of the concha and the ear canal is blocked by the core module 11. In other words, by allowing the free end FE to be inserted into the concha cavity and by making the sound emission hole 111a in the core module 11 have an appropriate distance from the ear canal, the user can hear more of the sound waves generated by the core module 11 when the ear canal is not blocked.

[0029] Illustratively, as shown in Fig. 4, the orthogonal projection of the hook-shaped structure 12 onto a reference plane perpendicular to the longitudinal direction Y (e.g., the XZ plane in Fig. 4) partially overlaps with the orthogonal projection of the free end FE onto the same reference plane. The overlapping region formed by the orthogonal projection of the hook-shaped structure 12 onto the aforementioned reference plane and the orthogonal 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 hold the ear part from both the front and rear sides of the ear part, but the formed holding force is mainly manifested as a compressive stress, which is advantageous for improving the stability and comfort of the earphone 10 when worn.

[0030] 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 remote from the core module 11, in which the battery 14 coupled to the core module 11 is installed, and the orthogonal projection of the battery housing 123 onto the reference plane partially overlaps with the orthogonal projection of the free end FE onto the same reference plane. In this way, when the free end FE abuts against the inside of 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 of the earphone 10 when worn. 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 cooperate to form a cavity structure for accommodating the battery 14.

[0031] 5, the core module 11 may have an upper side US away from the ear canal along the width direction Z, a lower side LS toward the ear canal, and a rear side RS connecting the upper side US and the lower side LS, and the rear side RS is located at one end toward the back of the head in the longitudinal direction Y in the worn state, and at least a part of it is located in the concha cavity. The edge of the hook-shaped structure 12 toward the core module 11 in the orthogonal projection onto a reference plane (e.g., the YZ plane in FIG. 5) perpendicular to the thickness direction X may be divided into a first segment S1 and a second segment S2 that transition in a continuous arc, and the boundary point DP between the first segment S1 and the second segment S2 is the position where the edge is furthest from the upper side US along the width direction Z. Furthermore, the overall curvature of the first segment S1 of the hook-shaped structure 12 is greater than the overall curvature of the second segment S2 of the hook-shaped structure 12. In this manner, the hook-like structure 12 can cooperate with the core module 11 to provide an appropriate clamping force while still allowing the free end FE to be inserted into the cavity of the concha.

[0032] It should be noted that the overall curvature can qualitatively describe the curvature of different segments of the hook-like structure 12, and the radius of curvature of each segment may be a constant value or may vary continuously. Thus, there is at least one point in the first segment S1 that has a smaller radius of curvature than any one point in the second segment S2. Furthermore, the overall curvature can also be quantitatively characterized by an average radius of curvature, i.e., first, the radius of curvature of N points in each segment is determined and then averaged.

[0033] Furthermore, in the extension 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 portion together with the core module 11 and increases the area of ​​contact of the hook-shaped structure 12 with the user's skin, which is advantageous in improving the stability of the earphone 10 when worn.

[0034] In some embodiments, the earphone 10 has a first reference line segment RL1 parallel to the width direction Z, the first reference line segment RL1 starts at a point where the first reference line segment RL1 intersects with the upper side surface US, and ends at a boundary point DP. A second reference line segment RL2, a third reference line segment RL3, and a fourth reference line segment RL4, which will be described later, are spaced apart from the start point of the first reference line segment RL1 in the width direction Z in that order. 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 that the free end FE cannot be inserted into the cavity of the concha and the sound emission hole 111a of the core module 11 is too far from the ear canal, and if the length of the first reference line segment RL1 is too large, it is likely that the free end FE cannot be inserted into the cavity of the concha and the ear canal is blocked by the core module 11. In other words, by allowing the free end FE to be inserted into the concha cavity and by making the sound emission hole 111a in the core module 11 have an appropriate distance from the ear canal, the user can hear more of the sound waves generated by the core module 11 when the ear canal is not blocked.

[0035] Furthermore, a second reference line segment RL2, which passes through 1 / 4 of the first reference line segment RL1 and is parallel to the longitudinal direction Y, intersects with 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 start 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 start point of the first reference line segment RL1 may be 12 mm to 19 mm. A third reference line segment RL3, which passes through 1 / 2 of the first reference line segment RL1 and is parallel to the longitudinal direction Y, intersects with 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 start point of the first reference line segment RL1 may be 11 mm to 18 mm, the distance between the fourth intersection point P4 and the start point of the first reference line segment RL1 may be 12 mm to 19 mm, the fourth reference line segment RL4 passing through 3 / 4 of the first reference line segment RL1 and parallel to the longitudinal direction Y intersects with 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 start 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 start point of the first reference line segment RL1 may be 12 mm to 19 mm. In this way, when the free end FE is inserted into the cavity of the concha and the sound emission hole 111a in the core module 11 has an appropriate distance from the ear canal, the hook-shaped structure 12 fits better to the ear.

[0036] In some embodiments, a fifth reference line segment RL5 is provided between the second segment S2 and the rear side surface RS, and has a shortest distance along the longitudinal direction Y, 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 of the core module 11 and the hook-shaped structure 12 on the ear portion is too large, which is likely to cause discomfort when worn, and if the length of the fifth reference line segment RL5 is too large, the clamping force of the core module 11 and the hook-shaped structure 12 on the ear portion is too small, which is likely to cause instability when worn. In other words, in this way, the earphone 10 is both stable and comfortable when worn.

[0037] Furthermore, the fifth reference line segment RL5 is defined as follows. The point where the fifth reference line segment RL5 intersects with the rear side surface RS is the starting point of the fifth reference line segment RL5, and the point where the fifth reference line segment RL5 intersects with the second segment S2 is the end point of the fifth reference line segment RL5. The orthogonal projection along the longitudinal direction Y of the intersection point between the first reference line segment RL1 and the upper side surface US intersects with the second segment S2 at the seventh intersection point P7, and the orthogonal projection along the longitudinal direction Y of the intersection point between the extension line of the first reference line segment RL1 and the lower side surface LS intersects with the second segment S2 at the eighth intersection point P8, and 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 the earphone 10 is worn with both stability and comfort, the hook-shaped structure 12 fits better to the ear.

[0038] Illustratively, as shown in FIG. 7, FIG. 8 and FIG. 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. A sound emitting hole 111a is provided on an inner surface (for example, the inner surface IS) facing the ear when the core housing 111 is worn, and sound waves generated by the speaker 112 are propagated through the sound emitting hole 111a to the ear canal. The sound emitting hole 111a may be provided on a side corresponding to the lower surface LS of the core housing 111, or may be provided at a corner between the inner surface and the lower surface LS. Furthermore, the speaker 112 may include a magnetic circuit system, a voice coil inserted into the magnetic circuit system, and a diaphragm connected to the voice coil. The magnetic field generated after the voice coil is energized and the magnetic field formed by the magnetic circuit system interact with each other, causing the diaphragm to generate mechanical vibrations, which in turn generates sound by propagation through a medium such as air.

[0039] 7 to 9, the earphone 10 may further include a main control circuit board 13 installed in the core housing 111 and a battery 14 installed at one end of the hook-shaped structure 12 remote from the core module 11, and the battery 14 and the speaker 112 are respectively coupled to the main control circuit board 13 to allow the battery 14 to supply power to the speaker 112 under the control of the main control circuit board 13. Of course, the battery 14 and the speaker 112 may both be installed in the core housing 111, and the battery 14 may be closer to the connection end CE and the speaker 112 may be closer to the free end FE.

[0040] Illustratively, as shown in FIG. 3 and FIG. 1, since the concha cavity has a certain volume and depth, after the free end FE is inserted into the concha cavity, there can be a certain distance between the inner surface IS of the core housing 111 and the concha cavity. In other words, the core module 11 can cooperate with the concha cavity in the wearing state to form an auxiliary cavity communicating with the ear canal, and at least a part of the sound emission hole 111a is located in the aforementioned auxiliary cavity. In this way, in the wearing state, the sound waves generated by the speaker 112 and propagated through the sound emission hole 111a are limited by the aforementioned auxiliary cavity, that is, the aforementioned auxiliary cavity can converge the sound waves to propagate more into the ear canal, thereby improving the volume and sound quality of the sound heard by the user in the near field, and thus favorable to improving the acoustic effect of the earphone 10. Furthermore, the core module 11 can be installed so as not to block the ear canal in the wearing state, so that the aforementioned auxiliary cavity can be installed in a semi-open type. In this way, the sound waves generated by the speaker 112 and propagated through the sound emission hole 111a propagate mostly to the ear canal, and a small portion propagates to the outside of the earphone 10 and the ear through the gap between the core module 11 and the ear (for example, the part of the concha not covered by the core module 11), thereby generating a first sound leakage in the far field. At the same time, the core module 11 generally has an acoustic hole (for example, the decompression hole 111c described later), and the sound waves propagated through the acoustic hole generally generate a second sound leakage in the far field. Furthermore, since the phase of the first sound leakage and the phase (approach) of the second sound leakage are in opposite phase to each other, the two can be offset in opposite phase in the far field, which is advantageous for reducing sound leakage in the far field of the earphone 10.

[0041] In addition, the earphone 10 may include an adjustment mechanism connecting the core module 11 and the hook-like structure 12, and different users can adjust the relative position of the core module 11 in the ear part through the adjustment mechanism in the wearing state to place the core module 11 in a suitable position, so that the core module 11 and the concha cavity form the auxiliary cavity. In addition, the existence of the adjustment mechanism also allows users to adjust the earphone 10 to wear it in a more stable and comfortable position.

[0042] Illustratively, as shown in FIG. 6, first, the earphone 10 is attached to the simulator, and the position of the core module 11 in the ear of the simulator is adjusted. Then, a frequency response curve of the earphone 10 is measured by a detector (e.g., a microphone) installed in the ear canal of the simulator (e.g., the position of the eardrum, i.e., the listening position), to simulate the listening effect after the user wears the earphone 10. The frequency response curve can characterize the change relationship between the magnitude of vibration and frequency, and the abscissa of the frequency response curve can represent the frequency in Hz, and the ordinate of the frequency response curve can represent the magnitude of vibration in 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 wearing state, and the curve 6_2 represents the frequency response curve when the core module 11 cooperates with the concha cavity to form the auxiliary cavity in the wearing state. Based on this, from the comparison diagram of the frequency response curves shown in Figure 6, it can be directly and unequivocally determined that the curve 6_2 is located above the curve 6_1 as a whole, that is, compared to the core module 11 not forming the concha cavity and the above-mentioned auxiliary cavity when worn, the core module 11 forming the concha cavity and the above-mentioned auxiliary cavity when worn is advantageous in improving the acoustic effect of the earphone 10.

[0043] Illustratively, as shown in FIG. 7, FIG. 9 and FIG. 11, the core module 11 may include a flexible mating block 1131 disposed outside the core housing 111, and the hardness of the flexible mating block 1131 is less than that of the core housing 111. The core housing 111 may be a plastic part, and the material of the flexible mating block 1131 may be silicone rubber, rubber, etc., and may be formed in a predetermined area of ​​the core housing 111 by injection molding. Furthermore, the flexible mating block 1131 may at least partially cover an area corresponding to the free end FE of the core housing 111, such that at least a part of the core module 11 abuts in the concha cavity via the flexible mating block 1131. In other words, the part of the core housing 111 that is inserted into the concha cavity and contacts the concha cavity may be covered by the flexible mating block 1131. In this way, when the core module 11 abuts within the concha cavity, for example when the core module 11 and the hook-shaped structure 12 are installed so as to clamp the ear region from both the front and rear of the ear region corresponding to the concha cavity of the ear, the flexible mating block 1131 acts as a buffer between the core housing 111 and the ear (e.g., the ear region), relieving the pressure of the earphone 10 on the ear, which is advantageous in improving comfort when the earphone 10 is worn.

[0044] Exemplarily, the flexible mating block 1131 may be continuously covered over at least some of the areas 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 area corresponding to the rear side surface RS of the core housing 111 is covered by the flexible mating block 1131 by 90% or more, and the areas corresponding to the upper side surface US and the lower side surface LS of the core housing 111 are each covered by about 30% by the flexible mating block 1131. In this way, comfort when wearing the earphone 10 and the need to install structural members such as the speaker 112 inside the core housing 111 are both achieved.

[0045] In some embodiments, when viewed in the thickness direction X, the flexible mating block 1131 may be arranged in a U-shape.

[0046] In some embodiments, the portion of the flexible mating block 1131 corresponding to the lower side surface LS may abut against the antitragus. The thickness of the portion of the flexible mating block 1131 corresponding to the rear side surface RS may be smaller than the thicknesses of the portions of the flexible mating block 1131 corresponding to the upper side surface US and the lower side surface LS, respectively, so that good comfort can be obtained even when the core module 11 abuts against an uneven position in the concha cavity.

[0047] 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, and the inner core housing 1111 is closer to the ear portion than the outer core housing 1112 in the mounted 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 approaching the free end FE, so that the flexible mating block 1131 can be installed as much as possible in the area corresponding to the free end FE of the outer core housing 111. For example, as shown in FIG. 11, the flexible mating block 1131 is installed in the area corresponding to the free end FE of the outer core housing 111 as a whole, which simplifies the structure of the core module 11 and reduces the processing cost.

[0048] Exemplarily, as shown in FIG. 7, FIG. 8 and FIG. 11, the core module 11 may include a flexible covering layer 1132, and the hardness of the flexible covering layer 1132 is less than that of the core housing 111. The core housing 111 may be a plastic part, and the material of the flexible covering layer 1132 may be silicone rubber, rubber, etc., and may be formed in a predetermined area of ​​the core housing 111 by injection molding, adhesive connection, etc. Furthermore, the flexible covering layer 1132 may integrally cover at least a part of the outer surface of the flexible mating block 1131 and at least a part of the outer surface of the outer core housing 1112 that is not covered by the flexible mating block 1131, which is advantageous to improve the consistency of the appearance of the core module 11. Of course, the flexible covering layer 1132 may further cover the outer surface of the inner core housing 1111. The hardness of the flexible mating block 1131 is smaller than that of the flexible covering layer 1132 so as to be sufficiently soft. In addition, the flexible covering layer 1132 can improve the comfort of wearing the earphone 10 and provide a certain structural strength to protect the flexible mating block 1131. Furthermore, the area of ​​the outer surface of the flexible mating block 1131 is 126 mm 2 ~189mm 2 If the area is too small, the comfort of the core module 11 when worn is likely to be deteriorated, and if the area is too large, the volume of the core module 11 is likely to be too large, and the area of ​​the flexible mating block 1131 that does not contact the concha cavity is likely to be too large, which is likely to deviate from the original purpose of installing the flexible mating block 1131. Furthermore, the thickness of the flexible covering layer 1132 is smaller than the thickness of the outer core housing 1112.

[0049] Illustratively, as shown in Fig. 11 and Fig. 9, the core module 11 may include metal functional patterns such as an antenna pattern 1141 and / or a touch pattern 1142 disposed between the outer core housing 1112 and the flexible cover layer 1132. The antenna pattern 1141 may be formed on the outside of the outer core housing 1112 by a laser-direct-structuring (LDS) technique, and the touch pattern 1142 may be formed on the outside of the outer core housing 1112 by a laser-direct-structuring (LDS) technique, or may be a flexible touch circuit board attached to the outside of the outer core housing 1112. In addition, the outer core housing 1112 is provided with plated through holes connected to the antenna pattern 1141 and the touch pattern 1142, respectively. In this case, the main control circuit board 13 is installed in the core housing 111, for example, the main control circuit board 13 is connected to the outer core housing 1112, so that the main control circuit board 13 can contact the inner wall of the corresponding plated through hole through an elastic metal member such as a pogo-PIN, a metal dome, etc., for example, the antenna pattern 1141 and the touch pattern 1142 are respectively connected to the pogo-PIN 131 and the 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 away from the outer core housing 1112. In this way, compared to the antenna pattern 1141 and the touch pattern 1142 being respectively placed on the inside of the external core housing 1112 facing the speaker 112, placing the antenna pattern 1141 on the outside of the external core housing 1112 increases the distance between the main control circuit board 13, i.e., increases the antenna clearance area, thereby improving the interference resistance of the antenna pattern 1141, and placing the touch pattern 1142 on the outside of the external core housing 1112 can shorten the distance to an external signal trigger source (e.g., a user's finger), i.e., by reducing the touch distance, improves the user-triggered sensitivity of the touch pattern 1142.

[0050] In some embodiments, the antenna pattern 1141 may surround the outer periphery of the touch pattern 1142 to fully utilize the space outside the outer core housing 1112. The antenna pattern 1141 may be arranged in a U-shape, and the touch pattern 1142 may be arranged in a square shape.

[0051] In addition, the core module 11 may include a microphone 133 welded to the main control circuit board 13, and the microphone 133 can pick up user voice and environmental voice through a sound pickup 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.

[0052] For example, as shown in Figures 10 and 11, the inner core housing 1111 may include a bottom wall 1113 and a first side wall 1114 connected to the bottom wall 1113, and the outer core housing 1112 may include a top wall 1115 and a second side wall 1116 connected to the top wall 1115, and the second side wall 1116 and the first side wall 1114 may be engaged with each other along the parting surface 111b and supported by each other. In a reference direction (for example, the opposite direction of the arrow Y in FIG. 10 and FIG. 11) from the connection end CE to the free end FE as viewed from the width direction Z, a portion of the first side wall 1114 adjacent to the free end FE gradually approaches the bottom wall 1113 in the thickness direction X, and a portion of the second side wall 1116 adjacent to the free end FE gradually moves away from the top wall 1115 in the thickness direction X, so that the parting surface 111b is inclined toward the side where the inner core housing 1111 is located in the direction approaching the free end FE. In this case, at least a portion of the flexible mating block 1131 is disposed outside the second side wall 1116. For example, as shown in FIG. 11 and FIG. 9, the flexible mating block 1131 is disposed outside the second side wall 1116 and is disposed outside the top wall 1115. Accordingly, the sound emission hole 111a may be disposed in the bottom wall 1113. Of course, the sound emission hole 111a may be disposed on the side corresponding to the lower surface LS of the first side wall 1114, or may be disposed on the corner between the first side wall 1114 and the bottom wall 1113. Furthermore, the antenna pattern 1141 and the touch pattern 1142 and their respective plated through holes may be disposed on the top wall 1115, and the sound pickup hole of the microphone 133 may be disposed on the top wall 1115.

[0053] Illustratively, as shown in FIG. 7 and FIG. 11, the outer core housing 1112 may be provided with a fitting groove located at least partially on the second side wall 1116, and the flexible fitting block 1131 is fitted into the fitting groove, so that the outer surface of the area of ​​the outer core housing 1112 not covered by the flexible fitting block 1131 and the outer surface of the flexible fitting block 1131 are continuously transitioned. The area where the flexible fitting block 1131 is located in FIG. 7 can be simply regarded as the fitting groove. In this way, it is not only advantageous to prevent the flexible fitting block 1131 from being piled up on the outer core housing 1112 during the injection molding process and the flexible fitting block 1131 from overflowing, but also advantageous to improve the appearance quality of the core module 11 and avoid dents on the surface of the core module 11.

[0054] 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 being 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 protruding toward the outside of the core housing 111 than the first sub-side wall portion 1117. In short, the second side wall 1116 may have a stepped structure. In this way, it is not only advantageous to prevent the flexible mating block 1131 from accumulating on the outer core housing 1112 during the injection molding process and the flexible mating block 1131 from overflowing, but also the core module 11 is better abutted in the concha cavity through the flexible mating block 1131, improving the comfort of the earphone 10 when worn.

[0055] Furthermore, the main control circuit board 13 may be connected to the outer core housing 1112, for example, fixed to a hot melt post connected to the top wall 1115, and may partially overlap the first sub-sidewall portion 1117 in the thickness direction X, and the speaker 112 may partially overlap the second sub-sidewall 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.

[0056] Exemplarily, as shown in FIG. 10 and FIG. 8, the core housing 111 may be provided with a decompression hole 111c, which communicates the space of the speaker 112 facing the main control circuit board 13 with the external environment, i.e., 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 vibration membrane of the speaker 112. The decompression hole 111c can be directed toward the top of the head when worn, which is advantageous to prevent the sound waves propagated through the decompression hole 111c from being heard as sound leakage (i.e., the above-mentioned second sound leakage). Based on the Helmholtz resonance cavity, the hole diameter of the decompression hole 111c can be made as large as possible, which can shift the resonance frequency of the second sound leakage to a frequency band as high as possible (e.g., a frequency range greater than 4 kHz), which is advantageous to further prevent the second sound leakage from being heard.

[0057] Further, the core housing 111 may be provided with a sound tuning hole 111d, which shifts the resonant frequency of the second sound leakage to a frequency band as high as possible (for example, a frequency range greater than 4 kHz), thus being advantageous in further avoiding the second sound leakage from being heard. The area of ​​the sound tuning hole 111d may be smaller than the area of ​​the decompression hole 111c, so that the space on the side of the speaker 112 facing the main control circuit board 13 communicates with the external environment as much as possible through the decompression hole 111c. Further, the distance between the sound emission hole 111a and the decompression hole 111c in the width direction Z is larger than the distance between the sound emission hole 111a and the sound tuning hole 111d in the width direction Z, thereby avoiding the sound waves propagated through the sound emission hole 111a and the decompression hole 111c from canceling each other in antiphase in the near field, thus being advantageous in improving the volume of the sound propagated through the sound emission hole 111a heard by the user. Accordingly, by placing the sound adjustment 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, it is possible to avoid the sound waves propagated through the sound emission hole 111a and the sound adjustment hole 111d from cancelling each other in antiphase in the near field, which is advantageous in increasing the volume of the sound propagated through the sound emission hole 111a that the user hears.

[0058] 10, the sound emission hole 111a, the decompression hole 111c, and the sound adjustment hole 111d may be provided in the inner core housing 1111, for example, the sound emission hole 111a is provided in the bottom wall 1113, and the decompression hole 111c and the sound adjustment hole 111d are respectively provided in the first side wall 1114. The decompression hole 111c and the sound adjustment hole 111d may be respectively provided on opposite sides in the width direction Z of the first side wall 1114. In this way, since the sound emission hole 111a, the decompression hole 111c, and the sound adjustment hole 111d are all provided in the inner core housing 1111, the structure of the outer core housing 1112 becomes simpler, which is advantageous for reducing processing costs. In addition, since the decompression hole 111c and the sound adjustment hole 111d are respectively arranged on opposite sides along the width direction Z of the first side wall 1114, the parting surface 111b can be arranged symmetrically with respect to a reference plane perpendicular to the width direction Z, which is advantageous in improving the appearance quality of the core module 11.

[0059] Illustratively, as shown in Figures 7 and 8, the core module 11 may include a bracket 115 installed in the core housing 111, and the bracket 115 and the speaker 112 surround and form an acoustic cavity 116, so that the acoustic cavity 116 can be separated from other structures (such as the main control circuit board 13) in the core housing 111, which is advantageous to 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, and an acoustic passage 1151 is installed in the bracket 115, which communicates the acoustic hole with the acoustic cavity 116, so that the acoustic cavity 116 communicates with the external environment, that is, air can freely enter and exit the acoustic cavity 116, which is advantageous to reducing the resistance in the vibration process of the vibration membrane of the speaker 112.

[0060] Furthermore, the bracket 115 cooperates with the core housing 111 to form a first adhesive accommodating groove 1171 surrounding at least a portion of the above-mentioned acoustic hole, and the first adhesive accommodating groove 1171 accommodates a first adhesive that seals the assembly gap between the bracket 115 and the core housing 111, i.e., the first adhesive provides a waterproof seal, which is advantageous in preventing external droplets of sweat, rainwater, etc. from entering the space in the core housing 111 where the main control circuit board 13 is located. In this way, based on the Helmholtz resonant cavity, compared with the related art in which a silicone rubber sleeve is pressed against the core housing 111 via the bracket 115 to achieve waterproof sealing, the waterproof sealing by the first adhesive in the present technical means can omit the aforementioned silicone rubber sleeve in the related art, and is advantageous in shortening the length of the communication part between the acoustic cavity 116 and the external environment (including the acoustic passage 1151 and the acoustic hole), thereby shifting the resonant frequency of the sound leakage (i.e., the above-mentioned second sound leakage) propagated through the decompression hole 111c to a frequency band as high as possible (for example, a frequency range greater than 4 kHz), further avoiding the second sound leakage from being heard.

[0061] 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 convenience of explanation, as shown in Figures 8, 10 and 12, the present application will exemplarily explain the case where 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. Furthermore, if the gap between the bracket 115 and the core housing 111 (e.g., its bottom wall 1113) is sufficiently large, or if the bottom wall 1113 and the first side wall 1114 of the core housing 111 are not an integrally molded structural member (i.e., are two separate structural members), the first adhesive containing groove 1171 may surround the entire acoustic hole, i.e., the first adhesive containing groove 1171 is a complete annular structure.

[0062] Exemplarily, as shown in FIG. 12 and FIG. 10, the bracket 115 may include an annular body portion 1152 and a butt portion 1153 connected to the annular body portion 1152. The annular body portion 1152 is fitted around the outer periphery of the speaker 112 to form an acoustic cavity 116, and the acoustic passage 1151 passes through the butt portion 1153 and the annular body portion 1152. Furthermore, the butt portion 1153 is located between the annular body portion 1152 and the core housing 111, and surrounds at least a part of the acoustic hole, and the butt portion 1153 cooperates with the core housing 111 to form a first adhesive receiving groove 1171. The acoustic hole may be the decompression hole 111c and the tuning hole 111d, whereby the butt portion 1153 is accordingly provided in two, and the first adhesive receiving groove 1171 is also accordingly provided in two. Accordingly, the butt portion 1153 cooperates with the first side wall 1114 to form a first adhesive receiving groove 1171. In this manner, since the bracket 115 is installed in an annular shape, the side of the speaker 112 facing the main control circuit board 13 is exposed, which is advantageous in reducing the thickness of the core module 11 in the thickness direction X.

[0063] 10 and 8, the core housing 111 may have a recessed area 1119 on the inside, the acoustic hole may be located at the bottom of the recessed area 1119, the core module 11 may include an acoustic impedance network 118 located in the recessed area 1119, and the butt portion 1153 presses the acoustic impedance network 118 to the bottom of the recessed area 1119. In this way, it is not only advantageous to prevent the bracket 115 from being caught by the acoustic impedance network 118 during the assembly process, but also advantageous to reduce the assembly gap between the bracket 115, the acoustic impedance network 118 and the inner core housing 1111, and to prevent the acoustic impedance network 118 from shaking. The acoustic impedance network 118 may be pre-fixed to the bottom of the recessed area 1119 by double-sided tape or adhesive, and the acoustic impedance network 118 may be pre-fixed to a metal protective mesh, and the aforementioned metal protective mesh is further pre-fixed to the bottom of the recessed area 1119 by double-sided tape or adhesive. Accordingly, the acoustic holes may be the decompression hole 111c and the acoustic tuning hole 111d, so that two recessed areas 1119 are provided accordingly, and two acoustic impedance networks 118 are provided accordingly.

[0064] Furthermore, the first adhesive may seal the assembly gap between the bracket 115 and the acoustic impedance network 118 and / or between the acoustic impedance network 118 and the core housing 111 (e.g., the side walls of the recessed area 1119), thus advantageous for further waterproof sealing.

[0065] Illustratively, as shown in FIG. 8, FIG. 10, and FIG. 12, the butt portion 1153 forms a bottom wall and one side groove wall of the first adhesive accommodating groove 1171, and the core housing 111 forms the other side groove wall of the first adhesive accommodating groove 1171. The groove wall of the core housing 111 and the groove wall of the butt portion 1153 are disposed opposite each other so that the first adhesive accommodating groove 1171 has a certain width and depth. Of course, the butt portion 1153 may form one side groove wall of the first adhesive accommodating groove 1171, and the core housing 111 may form the bottom wall and the other side groove wall of the first adhesive accommodating groove 1171, or the butt portion 1153 may form one side groove wall and a part of the bottom wall of the first adhesive accommodating 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 accommodating groove 1171.

[0066] 12 to 14, the speaker 112 may include a main body 1121 and an annular support 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 1122, and the acoustic passage 1151 may be installed in an open type on the side facing the annular support 1122, and the annular support 1122 further closes the open part of the acoustic passage 1151. In this case, it can be simply considered that the first adhesive receiving groove 1171 surrounds a part of the acoustic hole, so that the adhesive is subsequently filled into the first adhesive receiving groove 1171 by a method such as an adhesive application process.

[0067] In some embodiments, the annular support 1122 may include a first annular mesa 1123 and a second annular mesa 1124 arranged in a stepped manner, the second annular mesa 1124 is arranged around the outer periphery of the first annular mesa 1123, and the lower end of the bracket 115 may be partially supported by the first annular mesa 1123 and partially form a gap area between it and the second annular mesa 1124, whereby the bracket 115, the annular support 1122 and the core housing 111 cooperate to form a second adhesive accommodating groove 1172, which accommodates a second adhesive that seals the assembly gap between any two of the bracket 115, the annular support 1122 and the core housing 111, thereby providing a corresponding waterproof seal.

[0068] In some embodiments, the upper end of the bracket 115 may be hooked onto the main body 1121 and cooperate with the main body 1121 to form a third adhesive receiving groove 1173, in which a third adhesive is received to seal the assembly gap between the bracket 115 and the main body 1121 and provide a corresponding waterproof seal.

[0069] In addition, the specific assembly process of the core module 11 may include the following process steps, and the order of all the process steps can be adjusted as necessary: ​​in step 1), the acoustic impedance network 118 is pre-fixed to the bottom of the recessed area 1119 by double-sided tape; in step 2), the speaker 112 is fixed to the bottom wall 1113, and adhesive is applied to the assembly gap between the two, and the corresponding adhesive is deposited on the second annular mesa 1124 of the speaker 112; in step 3), before the adhesive in step 2) is hardened, the bracket 115 is fixed to the speaker 112, and the lower end of the bracket 115 is fixed to the speaker 112. By being supported by the first annular mesa 1123 of 112, the gap between the lower end of the bracket 115 and the second annular mesa 1124 is also filled with adhesive, the butt portion 1153 of the bracket 115 presses against the acoustic impedance network 118 and cooperates with the first side wall 1114 to form a first adhesive accommodating groove 1171, the upper end of the bracket 115 is hung on the main body 1121 and cooperates with the main body 1121 to form a third adhesive accommodating groove 1173, and in step 4), adhesive is applied to the first adhesive accommodating groove 1171, the third adhesive accommodating groove 1173, and the assembly gap between the lower end of the bracket 115 and the speaker 112 and the internal core housing 1111. Because the assembly gap between the lower end of the bracket 115 and the speaker 112 and the inner core housing 1111 is very close to the first adhesive accommodating groove 1171, the assembly gap between the lower end of the bracket 115 and the speaker 112 and the inner core housing 1111 can be simply regarded as a continuation of the first adhesive accommodating groove 1171, that is, the first adhesive accommodating groove 1171 and the second adhesive accommodating groove 1172 can be connected.

[0070] Illustratively, as shown in FIG. 15 to FIG. 18 and FIG. 7, the hook-shaped structure 12 may include an adapter housing 122 connected to the core module 11, the adapter housing 122 may have a receiving cavity 124 formed in advance, and the earphone 10 may subsequently include an electronic component 15 mounted in the receiving cavity 124. The connection manner between the adapter housing 122 and the core module 11 may be one of assembly manners such as locking, welding, adhesive connection, screw connection, and screw connection, or a combination thereof. In this way, compared with the related art in which the electronic component 15 is installed in the core module 11, the present technical solution is advantageous in saving space in the core module 11 and making the structure more compact and small by mounting the electronic component 15 in a predetermined receiving cavity 124 of the hook-shaped structure 12, as well as in simplifying the structure of the core module 11 and increasing its assembly efficiency, and is advantageous in rationally laying out the relative positions of each structural member in the earphone 10, and can fully utilize both the core module 11 and the hook-shaped structure 12.

[0071] It should be noted that the fact that the accommodating cavity 124 is preformed in the adapter housing 122 may mean that the accommodating cavity 124 is not formed by processing after the molding of the adapter housing 122, but is formed simultaneously when the adapter housing 122 is molded. For example, the adapter housing 122 is a plastic housing, and the corresponding accommodating cavity 124 can be obtained after the plastic housing is injection molded by installing a corresponding core. Accordingly, the fact that the electronic component 15 is subsequently mounted in the accommodating cavity 124 may mean that the electronic component 15 and the adapter housing 122 are structural members that are not integrally molded. For example, the adapter housing 122 is a plastic housing, and the electronic component 15 is not integrally injection molded in the plastic housing by insert molding. Based on this, the adapter housing 122 mentioned below has a through hole 1251, a blind hole 1252, a through hole 1253, etc. preformed in advance, and therefore the description is omitted here because it is the same or similar. Of course, the accommodating cavity 124 may be obtained by a drilling process after molding the adapter housing 122, and the through holes 1251, blind holes 1252 and through holes 1253, etc. may also be obtained by a drilling process after molding the adapter housing 122.

[0072] 7, the electronic components 15 can be coupled to the main control circuit board 13 to realize the electrical connection between the hook-like structure 12 and the core module 11, and the adapter housing 122 can be inserted and fixed to the core housing 111, thereby realizing the structural connection between the hook-like 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 is first partially inserted into the other along the assembly direction, and then inserted and fixed by other position limiting structures such as plugs, and the assembly direction of the aforementioned position limiting structures is not parallel to the aforementioned assembly direction, and the aforementioned insertion and fixation may be such that when one of the adapter housing 122 and the core housing 111 is partially inserted into the other, the aforementioned insertion and fixation can be performed without the intervention of the aforementioned position limiting structures.

[0073] 7, 10 and 16, the adapter housing 122 may be provided with a first buckle structure 1221, and the core housing 111 may be provided with a second buckle structure 1222. The first buckle structure 1221 is inserted into the core housing 111 and engaged with the second buckle structure 1222, thereby engaging and fixing the adapter housing 122 and the core housing 111, and the two are directly inserted and fixed without any other position limiting structure, which is simple and reliable. The first buckle structure 1221 may be integrally provided on the adapter housing 122, or two of them may be provided facing each other with a gap in the thickness direction X, and the second buckle structure 1222 may be integrally provided on the inner core housing 1111, and provided one-to-one with the first buckle structure 1221.

[0074] Illustratively, as shown in Fig. 7, the earphone 10 may include a flexible circuit board 16, which is at least partially installed in the receiving cavity 124 and connected to the electronic component 15, and extends into the core housing 111, so that the electronic component 15 is connected to the main control circuit board 13 through the flexible circuit board 16. For example, the electronic component 15 is welded to one end of the flexible circuit board 16 by Surface Mount Technology (SMT), and 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 arranged to be connected to the flexible circuit board 16 in the extension path of the flexible circuit board 16, for example, the lead wire of the speaker 112 is welded to the corresponding area of ​​the flexible circuit board 16, so that the speaker 112 is also connected to the main control circuit board 13 via the flexible circuit board 16, and the lead wire of the speaker 112 does not need to be extended to be connected to the main control circuit board 13, thus simplifying the wiring structure of the earphone 10 and advantageously reducing production costs.

[0075] Exemplarily, as shown in FIG. 16 and FIG. 15, the adapter housing 122 may have a through hole 1251 communicating with the receiving cavity 124 formed in advance, the electronic component 15 may include an electrode terminal 151 at least partially installed in the through hole 1251, and the electrode terminal 151 may be a stretchable elastic member such as a pogo-PIN or a non-stretchable rigid member such as a metal post. The hole diameter of the through hole 1251 may be larger than the outer diameter of the electrode terminal 151 so that the electrode terminal 151 is subsequently attached. Of course, the electrode terminal 151 may be integrally molded with the adapter housing 122 by an insert method. Furthermore, the electrode terminal 151 can be made invisible toward the ear when worn, which is advantageous for improving the appearance quality of the earphone 10 when worn.

[0076] In addition, when the electrode terminal 151 is installed as an expandable elastic member such as a pogo-PIN, the extension direction of the electrode terminal 151 may be the expansion direction thereof, and when the electrode terminal 151 is installed as an inexpandable rigid member such as a metal pillar, the extension direction of the electrode terminal 151 may be the direction in which its axis is located.

[0077] Furthermore, a plurality of electrode terminals 151 may be installed according to actual usage needs, for example, for charging, detection, etc.

[0078] In some embodiments, the electrode terminal 151 may include a positive charging terminal 1511 and a negative charging terminal 1512 spaced apart from each other, and the positive charging terminal 1511 and the negative charging terminal 1512 may be correspondingly disposed in the respective through holes 1251 so that the earphone 10 is charged through the electrode terminal 151. Of course, only one of the positive charging terminal 1511 and the negative charging terminal 1512 may be disposed in the adapter housing 122, and the other may be disposed in another housing, such as the battery housing 123 in the hook-shaped structure 12, or the inner core housing 1111.

[0079] In some embodiments, the electrode terminal 151 may include a detection terminal 1513 spaced apart from the charging positive terminal 1511 and the charging negative terminal 1512, and the detection terminal 1513 may perform detection functions such as charging detection, and detection of insertion and removal of the earphone 10 from the charging box. Of course, the detection terminal 1513 may be replaced with an electronic component such as a Hall sensor.

[0080] In some embodiments, when viewed from the extension direction of the electrode terminal 151, the lines connecting two of the charging positive terminals 1511, the charging negative terminals 1512, and the detection terminals 1513 can form a triangle, for example, an equilateral triangle.

[0081] In some embodiments, the charging positive terminal 1511, the charging negative terminal 1512, and the detection terminal 1513 may be arranged in a line segment, for example, a straight line, with a gap between them, as viewed from the extending direction of the electrode terminal 151. The gap between the charging positive terminal 1511 and the charging negative terminal 1512 may be larger than the gap between the charging negative terminal 1512 and the detection terminal 1513. For example, the charging negative terminal 1512 is located between the charging positive terminal 1511 and the detection terminal 1513, and the gap between the charging positive terminal 1511 and the charging negative terminal 1512 is larger than the gap between the charging negative terminal 1512 and the detection terminal 1513, and for example, the detection terminal 1513 is located between the charging positive terminal 1511 and the charging negative 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 increase the distance between the charging positive terminal 1511 and the charging negative terminal 1512 as much as possible to avoid a short circuit between the two.

[0082] 15, a boss 126 may be provided on the outside of the adapter housing 122, and the through holes 1251 may further penetrate the boss 126 to expose the multiple electrode terminals 151 to the boss 126. In this way, the boss 126 makes the adapter housing 122 have a certain degree of arc, making the uneven parts flat, facilitating the installation of the electrode terminals 151. The charging positive terminal 1511, the charging negative terminal 1512, and the detection terminal 1513 may be provided in sequence at intervals along the longitudinal direction of the boss 126.

[0083] 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, i.e., both can be seen on the same side surface of the adapter housing 122, and the magnet 127 is closer to the outside toward the exposed end of the electrode terminal 151, thereby shortening the distance between the magnet 127 and a magnetic attraction structure in a charging device such as a charging box that cooperates with the magnet 127, or between a Hall sensor in a charging device that cooperates with the magnet 127, thus favoring improved reliability of functions such as charging, detection, etc. The magnet 127 and the electrode terminal 151 may be installed adjacent to each other, thereby allowing the magnet 127 to cooperate with a magnetic attraction structure in a charging device such as a charging box, and allowing the electrode terminal 151 to cooperate with an electrode terminal in the charging device, thereby facilitating charging. Accordingly, the boss 126 may protrude from the adapter housing 122 around the magnet 127, i.e., the magnet 127 may be lower than the boss 126, so that the electrode terminal 151 contacts an electrode terminal in a charging device such as a charging box. Of course, in an embodiment in which the magnet 127 is used for detection in cooperation with a Hall sensor in a charging device such as a charging box, the magnet 127 may be installed adjacent to the electrode terminal 151, and the electrode terminal that cooperates with the electrode terminal 151 in a charging device such as a charging box may be installed adjacent to the aforementioned Hall sensor, thus being advantageous in reducing the area in which the aforementioned electrode terminal and the aforementioned Hall sensor are mounted in a charging device such as a charging box.

[0084] Furthermore, the hook-like structure 12 may include a flexible covering layer 128, and the hardness of the flexible covering layer 128 is less than that of the adapter housing 122. The adapter housing 122 may be a plastic part, and the material of the flexible covering layer 128 may be silicone rubber, rubber, etc., and may be formed on the adapter housing 122 by injection molding, adhesive connection, etc. Furthermore, the flexible covering layer 128 may cover the adapter housing 122 and the magnet 127 so 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, the use needs of the electrode terminal 151 can be met, and the magnet 127 can be shielded to avoid wear and the impact on appearance quality due to its exposure. In addition, the flexible covering layer 128 is also advantageous in improving the comfort of the earphone 10 when worn. The thickness of the flexible covering layer 128 is less than that of the adapter housing 122.

[0085] Illustratively, as shown in FIG. 16, in order to improve the waterproof and dustproof performance of the receiving cavity 124, the adapter housing 122 may be pre-formed with a blind hole 1252 that does not communicate with the receiving cavity 124. The magnet 127 may be installed at least in the blind hole 1252 and exposed through the open end of the blind hole 1252. In this way, it is not only advantageous to reduce the thickness of the adapter housing 122 in the area where the magnet 127 is located, but also advantageous to improve the appearance quality of the earphone 10 in the area where the magnet 127 is located. Of course, the blind hole 1252 may be installed as a through hole.

[0086] 15, the electrode terminals 151 may be arranged in a line segment, for example, a straight line or a broken line, spaced apart from each other when viewed from the extending direction of the electrode terminals 151. The magnet 127 may be located on any one side of the line segment, or the magnet 127 may intersect the line segment and be at least partially located between any two adjacent electrode terminals 151. For example, the number of magnets 127 is one, and the magnet 127 is located on one side of the line segment as a whole, or intersects the line segment and is located between any two adjacent electrode terminals 151 as a whole. Alternatively, the number of magnets 127 may be two, and one magnet 127 is located on one side of the line segment as a whole, and the other magnet 127 is located on the other side of the line segment as a whole. Further, for example, the number of magnets 127 is one, and a portion of the magnet 127 intersects the aforementioned line segment and is positioned between any two adjacent electrode terminals 151, and another portion is positioned below the electrode terminal 151 in the aforementioned extension direction.

[0087] Exemplarily, as shown in FIG. 15, the electrode terminals 151 may include a positive charging terminal 1511, a negative charging terminal 1512, and a detection terminal 1513 arranged in a straight line. The magnet 127 may be located on one side of the straight line. Furthermore, when viewed from the extending direction of the electrode terminals 151, there are a first distance, a second distance, and a third distance between the center of the magnet 127 and the centers of the positive charging terminal 1511, the negative charging terminal 1512, and the detection terminal 1513, respectively, and the third distance is greater than the first distance and the second distance, respectively, to ensure the reliability of charging. In addition, in an embodiment in which the flexible covering layer 128 is installed on the hook-shaped structure 12, the flexible covering layer 128 may be first removed to facilitate the determination of the relative positional relationship between the magnet 127, the positive charging terminal 1511, the negative charging terminal 1512, and the detection terminal 1513.

[0088] Exemplarily, as shown in FIGS. 16 to 18, the electronic component 15 may include an electrode terminal 151 and a microphone 152, and the adapter housing 122 may be formed in advance with a receiving cavity 124 and a through hole 1251 and a through hole 1253 that communicate with the receiving cavity 124, respectively. Since the electrode terminal 151 and the microphone 152 have different functions, the through hole 1251 and the through hole 1253 may be located on different side walls of the adapter housing 122. Based on this, the electrode terminal 151 is at least partially installed in the through hole 1251, and the microphone 152 is installed in the receiving cavity 124, and can pick up sounds (e.g., user sounds, environmental sounds) outside the earphone 10 through the through hole 1253. In this way, by rationally 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 becomes more compact and small. Furthermore, 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-holes 1251 and 1253, respectively. In this way, it is not only advantageous to prevent the electrode terminal 151 and the microphone 152 from being separated from the adapter housing 122, but also advantageous to improve the waterproof and dustproof performance of the electronic component 15, and the structure is simple and reliable.

[0089] 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 of an integral structure, the electrode terminal 151 is welded to the first circuit board portion 161, the second circuit board portion 162 is bent relative to the first circuit board portion 161, and the microphone 152 is welded to the third circuit board portion 163 and bent relative 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 faces in a hexahedral structure, two by two. The second circuit board portion 162 has one end remote from the third circuit board portion 163 connected to the first circuit board portion 161, and the other portion is not connected to the first circuit board portion 161. In this manner, after the flexible circuit board 16 and the electrode terminals 151 and microphone 152 thereon are assembled within the adapter housing 122, the worker first presses the end of the second circuit board portion 162 connected to the first circuit board portion 161 so as to make it as flush as possible with the first circuit board portion 161, thereby allowing the support assembly 17 to be avoided, which will be assembled subsequently.

[0090] In some embodiments, the adapter housing 122 may include two housings whose parting surfaces are perpendicular to the extending direction of the electrode terminal 151, and the two housings are engaged with each other to form the receiving cavity 124. The support assembly 17 may be integrally molded with one of the 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 supporting the electrode terminal 151 and the second support member supporting the microphone 152 in the support assembly 17 may support (or press) the electrode terminal 151 and the microphone 152, respectively, independently of the adapter housing 122, when the two housings are engaged, or the support assembly 17 may be assembled after the two housings are engaged to support (or press) the electrode terminal 151 and the microphone 152, respectively.

[0091] In some embodiments, at least a portion of the adapter housing 122 corresponding to the receiving cavity 124 is a complete housing structure. At least a first support member of the first support member supporting the electrode terminal 151 and the second support member supporting the microphone 152 in the support assembly 17 may be separate from the adapter housing 122 to facilitate assembly of at least the electrode terminal 151.

[0092] 18, the support assembly 17 may be inserted into the receiving cavity 124 independently of the adapter housing 122. In this manner, 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 in avoiding unnecessary structural interference and improves assembly efficiency.

[0093] In some embodiments, the first support member supporting the electrode terminal 151 in the support assembly 17 and the second support member supporting the microphone 152 may be independent of the adapter housing 122, i.e., 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 designed differently according to actual needs.

[0094] In some embodiments, the support assembly 17 may be an integrally molded structural member, i.e., the first support member supporting the electrode terminal 151 and the second support member supporting the microphone 152 in the support assembly 17 are connected to each other, which is not only advantageous to simplify the structure of the support assembly 17, but also advantageous to avoid the first support member and the second support member being too small and difficult to assemble. The support assembly 17 can be firmly fixed to the cavity wall of the receiving cavity 124 after being inserted to a predetermined position, i.e., the support assembly 17 has a certain resistance in the process of inserting or extracting it, and is simple in structure and reliable. Accordingly, the cavity wall of the receiving cavity 124 may be provided with a guide groove and a position limiting groove that cooperate with the support assembly 17. Of course, the support assembly 17 may further be bonded to the cavity wall of the receiving cavity 124 by an adhesive application process.

[0095] 17 and 18, at least a part of the support assembly 17 and the receiving cavity 124 may be arranged so that the dimension in at least one reference direction perpendicular to the insertion direction of the support assembly 17 into the receiving cavity 124 (for example, the direction shown by the arrow in FIG. 17 and FIG. 18) gradually decreases along the insertion direction, so that the support assembly 17 is inserted into the gap region between the electrode terminal 151 and the microphone 152. In other words, the dimension in at least one reference direction perpendicular to the insertion direction of at least a part of the support assembly 17 may be arranged so as to gradually decrease along the insertion direction, and the dimension in the same reference direction of at least a part of the receiving cavity 124 may be arranged so as to gradually decrease along the insertion direction, and the change trends of both are the same or similar, which is advantageous in that the support assembly 17 is firmly fixed to the cavity wall of the receiving cavity 124 after being inserted into a predetermined position.

[0096] 16 to 18, the cavity wall of the receiving cavity 124 may include a first cavity wall 1241 and a second cavity wall 1242 spaced apart from each other and a third cavity wall 1243 connecting the first cavity wall 1241 and the second cavity wall 1242. The through hole 1251 may be disposed in the first cavity wall 1241, and the through hole 1253 may be disposed in the third cavity wall 1243. Accordingly, the support assembly 17 may include a bottom plate 171 and a first side plate 172 connected to the bottom plate 171, for example, exhibiting an L-shaped structure. One main surface of the bottom plate 171 may be disposed opposite the first cavity wall 1241 and support the electrode terminal 151, and one main surface of the first side plate 172 may be disposed opposite the third cavity wall 1243 and support the microphone 152. In this manner, after the electrode terminal 151 and the microphone 152 are assembled in a predetermined position, the support assembly 17 is inserted into the receiving cavity 124 along the insertion direction, and after being inserted in a predetermined position, the support assembly 17 can support the electrode terminal 151 and the microphone 152 via the bottom plate 171 and the first side plate 172, respectively.

[0097] Furthermore, the orthogonal projection of the microphone 152 onto the first cavity wall 1241 can cover at least a portion of the electrode terminal 151; for example, the microphone 152 can cover a portion of the charging positive terminal 1511, which is advantageous in making the structure of each part more compact.

[0098] In some embodiments, the dimensions of at least a part of the bottom plate 171 and the receiving cavity 124 in a first reference direction RD1 perpendicular to the insertion direction and parallel to one main surface of the bottom plate 171 may be set to gradually decrease along the insertion direction, i.e., 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 set to maintain the dimension in the first reference direction RD1 along the insertion direction unchanged. The dimensions of the first side plate 172 and the receiving cavity 124 in a second reference direction RD2 perpendicular to the insertion direction and parallel to one main surface of the first side plate 172 may be set to maintain the dimension in the second reference direction RD2 along the insertion direction unchanged.

[0099] In some embodiments, the dimensions of at least a portion of the first side plate 172 and the receiving cavity 124 in a second reference direction RD2 perpendicular to the insertion direction and parallel to one main surface of the first side plate 172 may be set to gradually decrease along the insertion direction, i.e., 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 set to maintain the dimension in the second reference direction RD2 along the insertion direction unchanged. The dimensions of the bottom plate 171 and the receiving cavity 124 in a first reference direction RD1 perpendicular to the insertion direction and parallel to one main surface of the bottom plate 171 may be set to maintain the dimension in the first reference direction RD1 along the insertion direction unchanged.

[0100] In some embodiments, the dimensions of at least a portion of the first side panel 172 and the accommodating 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 panel 172 may be arranged to gradually decrease along the insertion direction, and the dimensions of at least a portion of the first side panel 172 and the accommodating cavity 124 in the second reference direction RD2 that is perpendicular to the insertion direction and parallel to one main surface of the first side panel 172 may be arranged to gradually decrease along the insertion direction.

[0101] In addition, with respect to the support assembly 17, the dimension of the bottom plate 171 in the first reference direction RD1 can be simply 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 simply regarded as the height of the first side plate 172.

[0102] 16 to 18, the support assembly 17 may include a second side plate 173 connected to the bottom plate 171, and the second side plate 173 and the first side plate 172 are arranged side by side on the same side of the bottom plate 171 with a gap therebetween, and the second side plate 173 abuts against the second cavity wall 1242 and provides the bottom plate 171 with a supporting force toward the electrode terminal 151, which is advantageous for improving the supporting effect of the support assembly 17 on the electrode terminal 151. In an embodiment in which the electrode terminal 151 includes a charging positive terminal 1511 and a charging negative terminal 1512 arranged with a gap therebetween along a direction perpendicular to the insertion direction, the second side plate 173 may be located between the charging positive terminal 1511 and the charging negative terminal 1512 so that each portion of the electrode terminal 151 receives a force uniformly, which is advantageous for further improving the supporting effect of the support assembly 17 on the electrode terminal 151.

[0103] 16 to 18, the cavity walls of the receiving cavity 124 may include a fourth cavity wall 1244 connecting the first cavity wall 1241 and the second cavity wall 1242 and facing the third cavity wall 1243. The first cavity wall 1241 and the second cavity wall 1242 may be generally arranged as planar structures parallel to each other, and the third cavity wall 1243 and the fourth cavity wall 1244 may be generally arranged as arcuate structures extending outward from each other so as to expand the volume of the receiving 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 being located at both side edges of the bottom plate 171, respectively, in a direction perpendicular to the insertion direction, and the second side plate 173 being 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 to provide the first side plate 172 with a supporting force toward the microphone 152, thus being advantageous in improving the supporting effect of the support assembly 17 on the microphone 152.

[0104] Furthermore, regarding 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. The second side plate 173 and the third side plate 174 do not directly contact either the electrode terminal 151 or the microphone 152, and therefore can guide the support assembly 17 during the insertion process into the receiving cavity 124. Accordingly, since the second side plate 173 has a relatively highest height, the support assembly 17 may include a reinforcing rib 175 connecting the second side plate 173 and the bottom plate 171. The reinforcing rib 175 may be installed on both opposing sides of the second side plate 173 toward the first side plate 172 and the third side plate 174.

[0105] Illustratively, as shown in FIG. 15-FIG. 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 conductor 129, and both ends of the elastic wire 121 and the conductor 129 may be connected to the adapter housing 122 and the battery housing 123, respectively, so that the conductor 129 extends along the elastic wire 121 and is wired in the adapter housing 122 and the battery housing 123. Of course, the conductor 129 may be wired in a predetermined wiring passage 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 through the conductor 129, so that the battery 14 is also connected to the main control circuit board 13 through the flexible circuit board 16, which is advantageous in simplifying the wiring structure of the earphone 10 and reducing production costs. In other words, components such as the electrode terminal 151 in the hook-like structure 12, the microphone 152, and the battery 14 may be connected to the main control circuit board 13 via the flexible circuit board 16.

[0106] In addition, the flexible covering layer 128 can further cover at least the elastic wire 121, the exposed portion of the conductor 129 and at least a portion of the battery 123, so that the conductor 129 is exposed, thus advantageously improving the appearance quality of the earphone 10.

[0107] The adapter housing 122 may be a part of the core housing 111, for example, the adapter housing 122 is integrally formed with the inner core housing 1111, or for example, a part of the adapter housing 122 is integrally formed with the inner core housing 1111, and the remaining part is integrally formed with the outer 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, or for example, the battery housing 123, are fixedly connected to the core module 11 having the adapter housing 122 and the adapter housing 122, for example, by insertion and fixing. In response to this, the positions of structural members such as the electrode terminal 151, the microphone 152, and the magnet 127 are adjusted accordingly, and their explanations are omitted here.

[0108] 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 covering layer, in which the metal functional pattern is disposed on the outside of the plastic housing, and the silicone rubber covering layer can cover the side of the metal functional pattern away from the plastic housing and the plastic housing not covered by the metal functional pattern by a manner such as integral injection molding, adhesive connection, etc. In this way, compared with the metal functional pattern being disposed on the inside away from the silicone rubber covering layer of the plastic housing, when the metal functional pattern is disposed on the outside toward the silicone rubber covering layer of the plastic housing, it is away from the interference of other electronic components in the housing assembly or 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 outer core housing 1112, and the structure of the silicone rubber covering layer may be the same as or similar to the flexible covering layer 1132, and the description is omitted here.

[0109] In some embodiments, the metal functional pattern may be disposed as an antenna pattern 1141 or a touch pattern 1142. The antenna pattern 1141 is disposed on the outside of the plastic housing, which can increase the distance between the antenna pattern 1141 and other electronic components in the plastic housing, i.e., increase the antenna clearance area, thereby improving the interference resistance of the antenna pattern 1141, and the touch pattern 1142 is disposed on the outside of the plastic housing, which can reduce the distance between the antenna pattern 1141 and an external signal trigger source (e.g., a user's finger), which can improve the user-triggered sensitivity of the touch pattern 1142 by reducing the touch distance.

[0110] In some embodiments, the metal feature pattern may include an antenna pattern 1141 and a touch pattern 1142, and the antenna pattern 1141 may surround the outer periphery of the touch pattern 1142, so as to fully utilize the space outside the plastic housing. The antenna pattern 1141 may be arranged in a U-shape, and the touch pattern 1142 may be arranged in a square shape.

[0111] In some embodiments, the thickness of the silicone rubber coating layer may be smaller than the thickness of the plastic housing, so that the silicone rubber coating layer shields and protects the metal functional pattern, further improving the interference resistance and sensitivity of the metal functional pattern, and reducing the volume of the housing assembly.

[0112] Exemplarily, the housing assembly can be a core housing that houses the speaker 112. The relative positional relationship between the plastic housing and the silicone rubber covering layer may be the same as or similar to the relative positional relationship between the core housing 111 and the flexible covering layer 1132, and is not described here.

[0113] Furthermore, the housing assembly may be applied to other electronic devices such as smart glasses in addition to the earphones 10. The electronic device may include a core module in which the speaker 112 is installed, a main control circuit board 13, and the speaker 112 and a battery 14 respectively coupled to the main control circuit board 13, and the housing assembly may accommodate at least one of 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 located at a corresponding wearing position. Note that 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, and the basic structure of the bone conduction speaker is well known to those skilled in the art and will not be described here.

[0114] The present application provides a housing assembly, which may include a first housing, an electrode terminal 151, a magnet 127, and a flexible covering layer 128, the electrode terminal 151 and the magnet 127 being exposed on the same side of the first housing, and the hardness of the flexible covering layer 128 being less than the hardness of the first housing, covering 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 to when the magnet 127 is installed in the first housing, in this technical means, the magnet 127 is brought closer to the outside where the exposed end of the electrode terminal 151 faces, thereby shortening the distance between the magnet 127 and a magnetic attraction structure cooperating with the magnet 127 in a charging device such as a charging box, or the distance between the magnet 127 and a Hall sensor cooperating with the magnet 127, thus being 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 smart glasses, or may be applied to a charging device such as a charging box. In other words, the electronic device may be a power receiving device or a charging device. For convenience of explanation, the first housing may be the adapter housing 122.

[0115] In some embodiments, the first housing may be provided with a through hole 1251 and a blind hole 1252, the electrode terminal 151 may be at least partially provided in the through hole 1251, and the magnet 127 may be at least partially provided in the blind hole 1252 and exposed through an open end of the blind hole 1252. In this manner, it is not only advantageous to reduce the thickness of the first housing in the region where the magnet 127 is located, but also advantageous to improve the appearance quality of the first housing in the region where the magnet 127 is located. Of course, the blind hole 1252 may be provided as a through hole.

[0116] In some embodiments, a boss 126 may be provided on the outside of the first housing, the boss 126 is provided adjacent to the magnet 127 and protrudes from the first housing around the magnet 127, and the through holes 1251 further penetrate the boss 126 to expose the multiple electrode terminals 151 to the boss 126. In this way, the boss 126 allows the first housing to have a certain degree of arc, making the non-flat parts flat, facilitating the installation of the electrode terminals 151. The boss 126 may be provided in an elongated shape, and has a simple structure and high reliability.

[0117] In some embodiments, the housing assembly may include a flexible circuit board 16, and in order to simplify wiring of the electrode terminal 151, the electrode terminal 151 is connected to the flexible circuit board 16. The first housing may have an accommodation cavity 124 formed therein, and at least a portion of the flexible circuit board 16 may be disposed in the accommodation cavity 124, with the through hole 1251 communicating with the accommodation cavity 124 and the blind hole 1252 not communicating with the accommodation cavity 124, thereby improving the waterproof and dustproof performance of the first housing.

[0118] In some embodiments, the housing assembly may include a second housing, an elastic wire 121, and a conductor 129, and both ends of the elastic wire 121 and the conductor 129 may be connected to the first housing and the second housing, respectively, so that the conductor 129 extends along the elastic wire 121 and is wired in the first housing and the second housing. For convenience of explanation, the second housing may be a battery housing 123. Furthermore, the battery 14 is installed in the second housing, and the battery 14 is connected to the flexible circuit board 16 via the conductor 129, that is, the battery 14 and the electrode terminal 151 are both connected to the flexible circuit board 16, simplifying the wiring. Accordingly, the flexible covering layer 128 further covers at least the elastic wire 121 and the conductor 129 so that the conductor 129 is exposed.

[0119] In some embodiments, the housing assembly may include a third housing for use with earphone 10 and for housing speaker 112, the third housing being fixedly inserted into the first housing. For ease of explanation, the third housing may be core housing 111.

[0120] The present 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 an accommodating cavity 124 and a through hole 1251 and a through hole 1253 communicating with the accommodating cavity 124, respectively, the through hole 1251 and the through hole 1253 being located on different side walls of the first housing, the electrode terminal 151 may be at least partially provided in the through hole 1251, and the microphone 152 may be provided in the accommodating cavity 124 to pick up a sound outside the housing assembly through the through hole 1253. Furthermore, the support assembly 17 may be provided in the accommodating cavity 124, and may 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 advantageous not only to prevent the electrode terminal 151 and the microphone 152 from being separated from the first housing, but also to improve the waterproof and dustproof performance of the electrode terminal 151 and the microphone 152, and the structure is simple and reliable. For convenience of explanation, the first housing may be the adapter housing 122, the core housing 111, or a housing structure in which the core housing 111 and the adapter housing 122 are integrally molded.

[0121] In some embodiments, the support assembly 17 may be inserted into the receiving cavity 124 independently of the first housing.

[0122] In some embodiments, the support assembly 17 may be a unitary molded structural member.

[0123] In some embodiments, the housing assembly may include a third housing for use with earphone 10 and containing speaker 112, the third housing being fixedly inserted into the first housing. The first housing may be adapter housing 122 and the third housing may be core housing 111.

[0124] Furthermore, the housing assembly may be applied to other electronic devices such as smart glasses in addition to the earphones 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, and the housing assembly may accommodate at least one of 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 located at a corresponding wearing position. Note that 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, and the basic structure of the bone conduction speaker is well known to those skilled in the art and will not be described here.

[0125] Illustratively, as shown in FIG. 19 and FIG. 20, 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 be a curved or hook-shaped bent structure, or a rod-shaped structure that is not parallel to the extension direction of the core module 11, and the rod-shaped structure may cooperate with the core module 11 to perform a "hook-like" function, that is, the function of attaching the earphone to a human ear. Accordingly, the charging box 20 includes a lower housing assembly 21, and the lower housing assembly 21 may be provided with two profiling grooves 211 each for accommodating an earphone 10, and each profiling groove 211 may include a first profiling groove area 2111 corresponding to the core module 11 and a second profiling groove area 2112 corresponding to the hook-shaped structure 12, and the second profiling groove areas 2112 of the two profiling grooves 211 are provided crossing each other. In this way, when the earphones 10 are accommodated in the two profiling grooves 211, the hook structures 12 of the two earphones 10 overlap each other, for example, stacked up and down, thus reducing the volume of the charging box 20, making it more compact and easier for users to carry. Note that overlapping each other means that there is at least an overlapping area, including partial overlap and complete overlap.

[0126] In some embodiments, the projections of the first contour groove region 2111 and the second contour groove region 2112 onto a first reference direction overlap, as shown in Figure 19. Also, the projections of the first contour groove region 2111 and the second contour groove region 2112 onto a second reference direction overlap. The first reference direction is perpendicular to the second reference direction. In this way, when the earphone 10 is placed in the corresponding groove 211, the projection length of the charging box 20 occupied by the second groove area 2112 in the first reference direction and the projection length of the charging box 20 occupied by the first groove area 2111 in the first reference direction can overlap, and the projection length of the charging box 20 occupied by the second groove area 2112 in the second reference direction and the projection length of the charging box 20 occupied by the first groove area 2111 in the second reference direction can overlap, thereby reducing the volume of the charging box 20 and making it easier for users to carry. The amount of reduction in the volume of the charging box 20 is related to the degree of overlap between the projection length in the first reference direction and the projection in the second reference direction. In other words, when the earphone 10 is placed in the profiling groove 211, the projections of the core module 11 and the hook-shaped structure 12 of the earphone 10 in the first reference direction overlap, and the projections of the core module 11 and the hook-shaped structure 12 in the second reference direction overlap. Note that the first reference direction and the second reference direction are perpendicular to the thickness direction of the charging box 20 and perpendicular to each other. In this application, the first reference direction has a number of different embodiments, and different embodiments of the first reference direction will be described hereinafter as examples. The following embodiment of the first reference direction is at least one of the following embodiments, and the description will be omitted.

[0127] 1) In some embodiments, when the two profiling grooves 211 are installed at a distance from each other in the lower housing assembly 21, the first reference direction may be the arrangement direction of the two profiling grooves 211 (i.e., a line connecting the geometric centers of the two profiling grooves 211) or a direction perpendicular to the arrangement direction.

[0128] 2) In some embodiments, when the upper housing assembly 24 rotates relative to the lower housing assembly 21 to open or close the charging box 20, the first reference direction may be a direction perpendicular or parallel to the axis along which the upper housing assembly 24 rotates relative to the lower housing assembly 21.

[0129] 3) In some embodiments, when the two profiling grooves 211 are arranged axially symmetrically, the first reference direction may be a direction perpendicular or parallel to the axis of symmetry of the two profiling grooves 211 .

[0130] Preferably, the first reference direction may be the direction of a line connecting the same characteristic points of the two contour grooves 211 or a direction perpendicular to the direction of the line connecting the two contour grooves 211.

[0131] In addition, there is a thickness direction of the charging box 20 and a depth direction of the profiling groove 211. As shown in FIG. 24, the thickness direction of the charging box 20 and the depth direction of the profiling groove 211 of the present application may be perpendicular to the contact plane between the charging box 20 and the horizontal table surface after the charging box 20 is stably placed on the horizontal table surface. The thickness direction of the charging box 20 and the depth direction of the profiling groove 211 in the following embodiments are similar, so the description is omitted. In addition, in the actual production and manufacturing process, there is an error in the vertical due to the process. In other words, in the actual product, the two objects of the present application being perpendicular to each other means that the verticality of the two objects is within the allowable tolerance range, and the verticality is the position tolerance, and the specific tolerance range can be determined with reference to the relevant national standards, and the symmetry is similar, so the description is omitted. Meanwhile, the overlap of the projections of the present application includes both the situation where the projections completely overlap and the situation where the projections partially overlap.

[0132] In some embodiments, the projections of the first contour groove region 2111 and the first portion 2112a of the second contour groove region 2112 in the first reference direction overlap, as shown in Fig. 19. In this way, when the earphone 10 is placed in the contour groove 211, the dimension of the charging box 20 occupied by the first portion 2112a of the second contour groove region 2112 and the dimension of the charging box 20 occupied by the first contour groove region 2111 can overlap. In other words, the charging box 20 can simultaneously accommodate the first portion 2112a of the second contour groove area 2112 and the first contour groove area 2111 in the second reference direction with a first dimension, and the first dimension is smaller than the sum of the dimension of the first portion 2112a of the second contour groove area 2112 in the second reference direction and the dimension of the first contour groove area 2111 in the second reference direction, thereby ensuring that the charging box 20 can accommodate the earphone 10 while reducing the dimension of the charging box 20 in the second reference direction, making it easier for users to carry it.

[0133] In some embodiments, in a second reference direction perpendicular to the first reference direction, the projection of the second portion 2112b of the second contour groove area 2112 and the projection of the first contour groove area 2111 overlap. In this way, when the earphone 10 is placed in the contour groove 211, the dimension of the charging box 20 occupied by the second portion 2112b of the second contour groove area 2112 and the dimension of the charging box 20 occupied by the first contour groove area 2111 can overlap. In other words, the charging box 20 can simultaneously accommodate the second portion 2112b of the second contour groove area 2112 and the first contour groove area 2111 in the first reference direction with a second dimension, and the second dimension is smaller than the sum of the dimension of the second portion 2112b of the second contour groove area 2112 in the first reference direction and the dimension of the first contour groove area 2111 in the first reference direction, thereby ensuring that the charging box 20 can accommodate the earphone 10 while reducing the dimension of the charging box 20 in the first reference direction, making it easier for users to carry it.

[0134] In some embodiments, the projections of the first contour groove region 2111 and the first portion 2112a of the second contour groove region 2112 in the first reference direction overlap. Also, the projections of the first contour groove region 2111 and the second portion 2112b of the second contour groove region 2112 in the second reference direction overlap. In this way, the charging box 20 can make the dimensions occupied by the charging box 20 in the first reference direction and the second reference direction more reasonable by adjusting the overlapping ratio of the projections of the first contour groove region 2111 and the second contour groove region 2112 in the first reference direction and the second reference direction, and the shape of the charging box 20 can be made relatively square, which is not only more beautiful but also allows the user to easily put the charging box 20 in a pocket or backpack.

[0135] Specifically, in some cases, the first portion 2112a of the second contoured groove region 2112 corresponds to the battery housing 123 in the hook-like structure 12, and the second portion 2112b of the second contoured groove region 2112 corresponds to the elastic portion of the hook-like structure 12. The projections of the first contoured groove region 2111 and the first portion 2112a of the second contoured groove region 2112 in the first reference direction overlap, i.e., when the earphone 10 is placed in the contoured groove 211, the projections of the battery housing 123 and the core module 11 in the first reference direction overlap. The projections of the second portion 2112b of the second contoured groove region 2112 and the first contoured groove region 2111 overlap, i.e., when the earphone 10 is placed in the contoured groove 211, the projections of the elastic portion and the core module 11 in the second reference direction overlap.

[0136] Furthermore, in the second reference direction, the second portion 2112b of the second profiling groove area 2112 is located on the side of the first profiling groove area 2111 away from the edge of the lower housing assembly 21 adjacent to the first profiling groove area 2111. In other words, the second profiling groove areas 2112 of the two profiling grooves 211 are arranged close to each other. In this way, when two earphones 10 are accommodated, the hook-shaped structures 12 of the two earphones 10 can be arranged close to each other in a portion smaller than the thickness of the core module 11. In addition, the second profiling groove areas 2112 of the two profiling grooves 211 are arranged crossing each other, and when the two profiling grooves 211 respectively accommodate earphones 10, the hook-shaped structures 12 of the two earphones 10 overlap each other. In addition, since the hook-shaped structure 12 of the earphone 10 is thinner than the core module 11, after the two hook-shaped structures 12 are closely stacked on top of each other, the space utilization rate of the charging box 20 can be further improved, which is favorable for reducing the volume of the charging box 20.

[0137] In some embodiments, as shown in FIG. 20, the hook-shaped structure 12 includes a battery housing 123 and an elastic part connecting the battery housing 123 and the core module 11, and the two second contoured groove areas 2112 are arranged so that the elastic parts of the earphones 10 overlap each other when the two earphones 10 are accommodated. The elastic part is thinner than the battery housing 123, and the elastic parts of the two earphones 10 overlap each other, which can reduce the space occupied by the hook-shaped structure 12 in the thickness direction of the charging box 20, and is advantageous for reducing the volume of the charging box 20. The two elastic parts may have multiple overlapping ways, for example, the edges of the two elastic parts that are close to each other may overlap to form an overlapping area. Or, the elastic part is arranged in an arc shape, and the two elastic parts overlap each other, and the two elastic parts have a certain volume, so that two overlapping areas that do not communicate with each other are formed, and two overlapping points are formed at the geometric centers of the two overlapping areas. Preferably, the two tracing grooves 211 are mirror symmetric with respect to a line connecting the two overlapping points as an axis of symmetry, and the direction of the line connecting the two overlapping points is parallel to the first reference direction or the second reference direction.

[0138] In some other embodiments, the second contour groove regions 2112 of the two contour grooves 211 are installed independently of each other. In this way, the two earphones 10 can be accommodated in the charging box 20 relatively independently, and the two earphones 10 are not affected by each other when taken out, making it easy for the user to take them out independently.

[0139] In addition, the charging box 20 may include a main control circuit board 221 installed in the lower housing assembly 21 and an electrode terminal 222 installed on the main control circuit board 221. The electrode terminal 222 may be installed in multiple pairs, for example, two pairs, according to needs. Accordingly, when any earphone 10 is placed in the charging box 20, the electrode terminal 151 in the earphone 10 can contact the electrode terminal 222 in the charging box 20 one-to-one to meet the needs of functions such as charging and detection. Accordingly, the electrode terminal 222 may include a positive power supply terminal and a negative power supply terminal, and may further include a detection terminal, and the lines connecting these two may form a triangle, for example, an equilateral triangle, and may be arranged at intervals along a straight line, for example, may be collinear with each other at intervals.

[0140] 7 and 24, in one embodiment, the electrode terminal in the charging box 20 is a first electrode terminal (i.e., electrode terminal 222), and the electrode terminal in the earphone 10 is a second electrode terminal (i.e., electrode terminal 151). When the first electrode terminal is exposed from the profiling groove 211 and the earphone 10 is accommodated in the profiling groove 211, the second electrode terminal is connected to the first electrode terminal.

[0141] Specifically, in some embodiments, the first electrode terminal may be disposed in the first contoured groove region 2111, and the second electrode terminal may be disposed in the core module 11. The core module 11 is a rigid structure and has a relatively large rigidity compared to the hook-shaped structure 12, thus providing a relatively smooth and stable contact surface for the connection between the first electrode terminal and the second electrode terminal, and improving the stability of the connection between the first electrode terminal and the second electrode terminal. In some embodiments, the core module 11 may have a magnetic member (e.g., the first magnetic attraction member in the above embodiment), and the charging box 20 may have a magnetic attraction structure that engages with the magnetic member in the core module 11, and the connection between the first electrode terminal and the second electrode terminal may be more stable due to the magnetic attraction engagement between the magnetic member of the core module 11 and the magnetic attraction structure in the charging box 20.

[0142] In some embodiments, the hook-like structure 12 may include an elastic portion and a hard portion connecting the core module 11 and the elastic portion. The elastic portion may be composed of at least the aforementioned elastic wire 121 and may generate elastic deformation. The hard portion may be the adapter housing 122 and the electrode terminal 151 and the magnet 127 therein, etc. The first electrode terminal is exposed from the second contour groove area 2112, and the second electrode terminal is installed on the inner surface of the hard portion (the side of the hard portion facing the contour groove 211 when the earphone 10 is housed in the contour groove 211, see MS in FIG. 7). In this way, the second electrode terminal and its associated mechanical structure and circuit structure are both installed on the hook-like structure 12, simplifying the structure of the core module 11. The hard portion has a higher rigidity than the elastic portion, and by installing the second electrode terminal on the hard portion, the success rate and stability of the connection between the second electrode terminal and the first electrode terminal when the earphone 10 is housed in the charging box 20 can be improved.

[0143] Furthermore, the inner surface of the core module 11 (see IS in FIG. 7) and the inner surface of the hard part (see MS in FIG. 7) are inclined to each other, and the inner surface of the core module 11 and the inner surface of the hard part are arranged so as to be inclined to each other, so that the fit between the earphone 10 and the human ear can be facilitated. Specifically, in this way, the core module 11 is inserted into the concha cavity, and the hard part can be connected to the elastic part located at the rear side of the ear part, bypassing the tragus, thereby reducing interference between the earphone 10 and the ear part, and improving the wearing comfort of the earphone 10. In some embodiments, the contour groove 211 of the charging box 20 may be arranged so that the first contour groove region 2111 that accommodates the core module 11 and the region that accommodates the hard part in the second contour groove region 2112 are inclined to each other, so as to improve the fit with the earphone 10. When viewed in the thickness direction of the charging box 20, compared to when the first profiling groove region 2111 that accommodates the core module 11 and the region in the second profiling groove region 2112 that accommodates the hard portion are parallel to each other, by installing the profiling groove 211 so that the first profiling groove region 2111 that accommodates the core module 11 and the region in the second profiling groove region 2112 that accommodates the hard portion are inclined to each other, the projection dimension in the thickness direction of the charging box 20 can be reduced, making it easier to carry. By arranging the profiling groove 211 so that the first profiling groove region 2111 that accommodates the core module 11 and the region that accommodates the hard portion in the second profiling groove region 2112 are inclined relative to each other, the dimension required in the thickness direction of the charging box 20 can be reduced when the earphone 10 is accommodated in the charging box 20, and the operational feeling when the user accommodates the earphone 10 can be improved. In short, by arranging the profiling groove 211 so that the first profiling groove region 2111 that accommodates the core module 11 and the region that accommodates the hard portion in the second profiling groove region 2112 are inclined relative to each other, the charging box 20 can be fitted to the earphone 10.In addition, the thickness, length and width dimensions of the charging box 20 are all optimized, so that the charging box 20 is easy for users to carry, and the charging box 20 can meet the needs of human-machine engineering.

[0144] In some embodiments, as shown in FIG. 24, the extension direction of the first electrode terminal is inclined with respect to the thickness direction of the charging box 20 (see the β angle in FIG. 24). In this way, the space occupied by the first electrode terminal in the thickness direction of the charging box 20 can be reduced, which is advantageous for reducing the volume of the charging box 20, while when the earphone 10 is accommodated in the profiling groove 211, the extension direction of the first electrode terminal can be aligned with the extension direction of the second electrode terminal, thereby improving the success rate of the connection between the first electrode terminal and the second electrode terminal. Preferably, the β angle is 10 degrees to 45 degrees, and may be, for example, 30 degrees to 40 degrees, or may be, for example, 15 degrees to 25 degrees, and may be, preferably, 20 degrees.

[0145] In some embodiments, the normal direction of the inner surface IS of the core module 11 and the extension direction of the second electrode terminal are inclined relative to each other, thereby facilitating the connection between the first electrode terminal and the second electrode terminal and improving the success rate of connection.

[0146] Specifically, when the earphone 10 is inserted into the contoured groove 211, the extension direction of the first electrode terminal is inclined relative to the thickness direction of the charging box 20, so that the contact area between the first electrode terminal and the second electrode terminal gradually increases as the earphone 10 is inserted, so that the change in the contact area between the first electrode terminal and the second electrode terminal is not instantaneous. This is advantageous in improving the success rate of connection between the first electrode terminal and the second electrode terminal and in improving the stability after connection between the first electrode terminal and the second electrode terminal.

[0147] In some embodiments, the depth of the first contour groove region 2111 gradually increases in a direction away from the first electrode terminal, and when the earphone 10 is inserted into the contour groove 211, the core module 11 can fit into the depth change region of the first contour groove region 2111, thereby providing a guiding and positioning function for the core module 11, and making it easier for the core module 11 to be inserted into the first contour groove region 2111.

[0148] In some embodiments, the first electrode terminal is exposed from one end of the second groove region 2112 close to the first groove region 2111, and the depth of the region in the second groove region 2112 that accommodates the hard part gradually increases in a direction away from the first groove region 2111. In this way, the region in the first groove region 2111 and the region in the second groove region 2112 that accommodates the hard part can form a tapered structure with a certain angle in the thickness direction of the charging box 20, which matches the hard part and the core module 11 of the earphone 10, thereby playing a guiding role and making it easier for the earphone 10 to fit into the groove 211 when it is placed in the charging box 20. When the earphone 10 is placed in the groove 211, the tapered structure can also play a positional limiting role for the earphone 10, limiting the movement of the earphone 10 relative to the groove 211, and improving the stability when the earphone 10 is placed in the charging box 20.

[0149] In some embodiments, a first support platform 2113 is installed at the bottom of the second contoured groove region 2112, and the first electrode terminal is installed on the first support platform 2113, and a second support platform 176 is installed on the earphone 10, and the second electrode terminal is installed on the second support platform 176. Illustratively, as shown in FIG. 7, the second support platform 176 may be installed on the hard part of the earphone 10. The second support platform 176 may be installed on other positions of the core module 11 or the hook-like structure 12, and is not specifically limited. When the earphone 10 is accommodated in the contoured groove 211, the second support platform 176 abuts and engages with the first support platform 2113. By installing the first support platform 2113 and the second support platform 176, the structural strength of the second electrode terminal of the earphone 10 and the structural strength of the first electrode terminal of the contoured groove 211 can be improved, and the stability of the connection between the first electrode terminal and the second electrode terminal can be improved. At the same time, when the first electrode terminal and the second electrode terminal are connected, the first support platform 2113 and the second support platform 176 can bear a lot of wear, thereby reducing the wear of the first electrode terminal, the second electrode terminal and other parts in the process of repeatedly taking out the earphone 10, which is favorable to improving the service life of the earphone 10 and the charging box 20.

[0150] Preferably, the contact surface between the first support platform 2113 and the second support platform 176 is flat. In some embodiments, the normal direction of the contact surface may be inclined relative to the thickness direction of the charging box 20. In this way, when the first support platform 2113 and the second support platform 176 are abutted and engaged, the first electrode terminal and the second electrode terminal can be connected more smoothly. Also, in this way, the contact area between the first support platform 2113 and the second support platform 176 can be gradually increased as the earphone 10 is inserted, so that the change in the contact area between the first support platform 2113 and the second support platform 176 is not an instantaneous change, which is advantageous to improving the stability of the abutment engagement between the first support platform 2113 and the second support platform 176 and improving the success rate of the connection between the first electrode terminal and the second electrode terminal. Preferably, the contact surfaces of the first support platform 2113 and the second support platform 176 may be inclined relative to the bottom wall of the second contoured groove area 2112 so that the first support platform 2113 and the second support platform 176 are abuttingly engaged with each other, and the first support platform 2113 and the second support platform 176 may form a stepped structure.

[0151] In some other embodiments, the normal direction of the contact surface between the first support platform 2113 and the second support platform 176 is parallel to the extension direction of the first electrode terminal. In this way, the contact surface between the first electrode terminal and the second electrode terminal is parallel to the contact surface between the first support platform 2113 and the second support platform 176, and in the process of the earphone 10 being gradually inserted into the contoured groove 211, the connection between the first electrode terminal and the second electrode terminal is smooth, and the sense of resistance in the engagement process of the two support platforms is reduced.

[0152] In some other embodiments, the normal direction of the contact surface between the first support platform 2113 and the second support platform 176 is inclined with respect to the extending direction of the first electrode terminal. In this manner, the contact surface between the first electrode terminal and the second electrode terminal may form a stepped structure with respect to the contact surface between the first support platform 2113 and the second support platform 176, thereby fulfilling the functions of positioning and position limiting in the process of engagement between the first electrode terminal and the second electrode terminal, and is advantageous in improving the stability of the connection between the first electrode terminal and the second electrode terminal.

[0153] Illustratively, as shown in FIG. 20 and FIG. 9, the hook-like structure 12 may include an elastic portion connecting the core module 11 and the battery housing 123, and the elastic portion may be a portion where the elastic wire 121 is exposed from the adapter housing 122 and the battery housing 123. The two second contoured groove regions 2112 may be installed so that the elastic portions of the two earphones 10 overlap each other. In this way, one of the two earphones 10 may be first inserted into the contoured groove 211, and then the other one may also be inserted into the contoured groove 211, and the first inserted earphone 10 may be deformed to a certain extent, so that the later inserted earphone 10 can be better inserted into the lower housing assembly 21.

[0154] Furthermore, when viewed from directly above the charging box 20, for example, when the charging box 20 is first placed on a table and then viewed in a plan view, the elastic portion of the hook-shaped structure 12 may be arranged in an arc shape, and two overlapping points (for example, as shown in OP1 and OP2 in FIG. 20) are formed when the elastic portions of the two earphones 10 overlap each other, and the two profiling grooves 211 may be mirror-symmetric with respect to the line connecting the two overlapping points (i.e., the line segment OP1 OP2) as the axis of symmetry, which makes the distribution of the two profiling grooves 211 more reasonable and is beneficial to improving the appearance quality of the charging box 20.

[0155] In some embodiments, the area located between the two overlapping points of the two second contoured groove areas 2112 can reserve a part of the lower housing assembly 21, i.e., the two second contoured groove areas 2112 form an island at their junction, thus advantageously limiting the degree of freedom of any earphone 10 after it is placed in the contoured groove 211. In other words, the area surrounded by the hook-like structures 12 of the two second contoured groove areas 2112 and located between the two overlapping points forms the island.

[0156] In one embodiment, the two earphones 10 are respectively worn on the left and right ears of the user, and the core modules 11 of the two earphones 10 are located on both sides of the first reference direction. By installing in the above manner, when viewed from the first reference direction, that is, in the direction when the user opens the charging box 20 to the front, the earphone 10 worn on the left ear is accommodated on the left side of the user, and the earphone 10 worn on the right ear is accommodated on the right side of the user, so that the user can easily take out the earphone 10 from the charging box 20 and accommodate the earphone 10 in the charging box 20. Preferably, the two profiling grooves 211 are mirror symmetrical with the line connecting the two overlapping points as the axis of symmetry. The direction of the line connecting the two overlapping points is parallel to the first reference direction.

[0157] In some embodiments, the areas of the two second contoured groove regions 2112 surrounded by the hook-like structures 12 and located between the two overlapping points are integrated with each other, i.e., since the islands are not present, the two second contoured groove regions 2112 are integrated at their junctions, thus favoring easy insertion of the earphone 10 into the corresponding contoured groove 211.

[0158] 20 and 9, the hook-like structure 12 may include a rigid part located between the elastic part and the core module 11, the rigid part connecting the core module 11 and the elastic part, and may be the adapter housing 122 and the electrode terminal 151 and the magnet 127 therein, etc. Accordingly, the lower housing assembly 21 may include a position limiting structure 212, which may be disposed within the profiling groove 211 or adjacent to the profiling groove 211. After any of the earphones 10 is placed in the groove 211, the position limiting structure 212 can apply a pressing force toward the bottom of the groove 211 to the hard part of the earphone 10, so as to maintain the relative position between the earphone 10 and the lower housing assembly 21, and at least some of the elastic parts of the same earphone 10 form a cantilever structure with respect to the point of action of the hard part of the position limiting structure 212, that is, at least some of the elastic parts of any of the earphones 10 may not contact the bottom of the groove 211 (especially the second groove region 2112). In this way, when one of the two earphones 10 is placed in the groove 211 first and then the other earphone 10 is placed in the groove 211, the elastic part of the earphone 10 placed first is easily deformed to a certain extent, so that the earphone 10 placed later can be better placed in the lower housing assembly 21.

[0159] In some embodiments, the position limiting structure 212 may be a protrusion that interferes with a hard part of the earphone 10 during the process of inserting the earphone 10 into the groove 211 and removing it from the groove 211. The protrusion may be located close to the groove 211.

[0160] For example, the number of the protrusions may be two, and the two protrusions are located on opposite sides of the profiling groove 211. In the process of inserting any one of the earphones 10 into the profiling groove 211, the hard part of the earphone 10 is locked between the two protrusions by the pressing force applied by the user.

[0161] In addition, the charging box 20 may include a first magnetic attraction structure 231 and a second magnetic attraction structure 232 installed in the lower housing assembly 21, and the electrode terminal 222 may be located between the first magnetic attraction structure 231 and the second magnetic attraction structure 232. After any earphone 10 is placed in the profiling groove 211, the first magnetic attraction structure 231 can form a first magnetic attraction matching pair with the first magnetic attraction member in the earphone 10, and the second magnetic attraction structure 232 can form a second magnetic attraction matching pair with the second magnetic attraction member in the earphone 10, and the electrode terminal 222 and the electrode terminal 151 are in one-to-one contact with each other through the first magnetic attraction matching pair and the second magnetic attraction matching pair. In this way, after the electrode terminal 222 and the electrode terminal 151 are paired, they are located between the first magnetic attraction matching pair and the second magnetic attraction matching pair, so that the contact between the earphone 10 and the charging box 20 is better. In addition, the position limiting structure 212 can further ensure the contact between the earphone 10 and the charging box 20.

[0162] In some embodiments, the position limiting structure 212 may be a position limiting groove that communicates with the contour groove 211, and the hook-shaped structure 12 moves further into the position limiting groove after any earphone 10 is inserted into the contour groove 211, that is, the earphone 10 has a displacement as a whole. The aforementioned position limiting groove may be installed in the contour groove 211.

[0163] Exemplarily, the charging box 20 may include a first magnetic attraction structure 231 installed in the lower housing assembly 21. After any earphone 10 is placed in the tracking groove 211, the first magnetic attraction structure 231 forms a first magnetic attraction matching pair with the first magnetic attraction member in the earphone 10, for example, the two magnets attract each other to guide the hook-shaped structure of the earphone 10 to move further into the position limiting groove. A guide surface may be installed at the bottom of the tracking groove 211 to guide the hook-shaped structure of the earphone 10 into the position limiting groove. For example, the depth of the segment of the second tracking groove region 2112 adjacent to the first tracking groove region 2111 is greater than the depth of the first tracking groove region 2111, that is, there is a height difference between the two, and the tracking groove 211 is installed to make a slope transition to the region having the height difference to form the aforementioned guide surface. Accordingly, the position limiting groove may be located in a segment of the second contoured groove region 2112 adjacent to the first contoured groove region 2111 .

[0164] In addition, the charging box 20 may include a second magnetic attraction structure 232 installed in the lower housing assembly 21, and the electrode terminal 222 may be located between the first magnetic attraction structure 231 and the second magnetic attraction structure 232. After any earphone 10 is placed in the tracing groove 211, the second magnetic attraction structure 232 can form a second magnetic attraction matching pair with the second magnetic attraction member in the earphone 10, for example, the two magnets attract each other, and together with the first magnetic attraction matching pair, guide the hook-shaped structure of the earphone 10 to move further into the position limiting groove, so that the force to move further into the position limiting groove after any earphone 10 is placed in the tracing groove 211 is more sufficient. Similarly, the electrode terminal 222 and the electrode terminal 151 contact one-to-one through the first magnetic attraction matching pair and the second magnetic attraction matching pair. In this way, after the electrode terminal 222 and the electrode terminal 151 are paired, they are located between the first magnetic attraction matching pair and the second magnetic attraction matching pair, so that the contact between the earphone 10 and the charging box 20 is better. In addition, the position limiting structure 212 can further ensure the contact between the earphone 10 and the charging box 20.

[0165] In addition, the first magnetically attractive member may be the speaker 112 in the core module 11, specifically, the magnetic circuit system of the speaker 112, and the second magnetically attractive member may be a magnet 127 installed in the hard part of the earphone 10.

[0166] Usually, when the earphone 10 is put into the charging box 20, the deformation of the hook-shaped structure 12 will reduce the success rate of putting the earphone 10 into the box or affect the accommodation stability of the earphone 10. For example, the core module 11 of the earphone 10 may be accommodated in the first contour groove area 2111, and the hook-shaped structure 12 may be accommodated in the second contour groove area 2112, but due to its elasticity, in the process of being put into the second contour groove area 2112, due to the previous deformation caused by use or the movement deformation caused by inertia force, it cannot properly correspond to the shape of the second contour groove area 2112, and is difficult to be put into the contour groove area 211, and at the same time, the accommodation relationship between the core module 11 and the first contour groove area 2111 becomes unstable. In order to solve the above technical problems, the following embodiment is provided.

[0167] In some embodiments, as shown in FIG. 20 , a certain movable gap is set between the core module 11 and the side wall of the first contour groove area 2111, and a certain movable gap is set between the hook-shaped structure 12 and the side wall of the second contour groove area 2112. In this way, during the process of inserting the earphone 10 into the contour groove 211, the contour groove 211 can provide sufficient space to allow the hook-shaped structure 12 to exist or to undergo a certain deformation, ensuring that the core module 11 and the hook-shaped structure 12 can be smoothly inserted into the first contour groove area 2111 and the second contour groove area 2112 respectively with less user intervention, thereby further improving the success rate of inserting the earphone into the box and the storage stability. Furthermore, since the hook-shaped structure 12 has one end connected to the core module 11 and the other end installed in a cantilever, the part of the hook-shaped structure 12 away from the core module 11 can be regarded as the far end of the cantilever beam. In the process of inserting the earphone 10 into the profiling groove 211, the part of the hook-shaped structure 12 away from the core module 11 will generate a larger amount of deformation than other parts. In addition, considering that the core module 11 needs a smaller movable gap than the hook-shaped structure 12 so that it is sufficient for the core module 11 to be inserted into the first profiling groove area 2111, if the movable gap is too large, it will be disadvantageous to the dimensional optimization of the charging box 20, and the accommodation of the core module 11 in the charging box will be unstable, making it easy to generate shaking and abnormal noise.

[0168] In some embodiments, when the earphone 10 is inserted into the groove 211, in the extension direction of the hook-shaped structure 12, the movable gap between the part of the hook-shaped structure 12 away from the core module 11 and the side wall of the second groove area 2112 (see side wall 2111c in FIG. 20) is made larger than the movable gap between the core module 11 and the side wall of the first groove area 2111. This allows the core module 11 to be inserted smoothly, and the second groove area 2112 can provide a larger movable space for the hook-shaped structure 12, thereby further improving the success rate and stability of inserting the earphone 10 into the box, and optimizing the dimensions of the charging box 20. When the hook-shaped structure 12 is accommodated in the second contour groove area 2112, it will still be deformed by shaking or stress, and the dimension of the movable gap between the hook-shaped structure 12 and the side wall of the second contour groove area 2112 will change, but such a change will not cause the movable gap to disappear. Preferably, the dimension range of the movable gap between the part of the hook-shaped structure 12 away from the core module 11 and the side wall of the second contour groove area 2112 is 0.5 to 1.5 mm, for example, the dimension of the movable gap may be 1 to 1.3 mm, specifically, 1.2 mm. By setting the dimension of the movable gap in this way, the success rate of inserting the hook-shaped structure 12 into the second contour groove area 2112 can be improved, and the impact on the dimension of the charging box 20 is small.

[0169] Preferably, the size range of the movable gap between the core module 11 and the sidewall of the first contour groove region 2111 is 0.05 to 0.2 mm, and for example, the size of the movable gap may be 0.07 to 0.15 mm, specifically, 0.1 mm. The movable gap thus set allows the core module 11 to be stably accommodated in the first contour groove region 2111, and allows the positioning and positional restriction of the accommodation of the earphone 10 in the contour groove 211 to be performed, which is advantageous in improving the stability of the contact of the electrode terminals.

[0170] In some embodiments, the portion of the hook-like structure 12 away from the core module 11 includes a battery housing 123 that accommodates a battery. The battery housing 123 is disposed at the portion of the hook-like structure 12 away from the core module 11. The hook-like structure 12 may further include an elastic portion connecting the core module 11 and the battery housing 123. The battery housing 123 has a larger dimension than the elastic portion, so that the elastic portion can surround the ear of the user to hang the earphone 10, and the battery housing 123 can support the ear from the rear side of the ear, thus advantageously improving the stability of the earphone 10 in the worn state. The movable gap between the battery housing 123 and the side wall of the second contour groove region 2112 is larger than the movable gap between the core module 11 and the side wall of the first contour groove region 2111. In this way, the success rate of inserting the battery housing 123 into the second contour groove region 2112 can be improved, making it easier to insert the earphone 10. Furthermore, when the earphone 10 is accommodated in the contour groove 211, the movable gap between the elastic part and the side wall of the second contour groove region 2112 is larger than the movable gap between the core module 11 and the side wall of the first contour groove region 2111. In this way, the success rate of inserting the elastic part into the second contour groove region 2112 can be improved, making it easier to accommodate the earphone 10.

[0171] In some embodiments, the hook-like structure 12 further includes a hard part connecting the elastic part and the core module 11. The electrode terminal 151 or the second magnetic attraction member can be installed in the hard part, so it needs to have higher rigidity than the elastic part and has a higher requirement for stability. When the earphone 10 is accommodated in the contour groove 211, the movable gap between the elastic part and the side wall of the second contour groove region 2112 can be made larger than the movable gap between the hard part and the side wall of the second contour groove region 2112. In this way, the elastic part can be easily inserted into the second contour groove region 2112, and the hard part can be stably accommodated in the second contour groove region 2112, so that the hard part can fit the core module 11, which increases the stability of the earphone 10 being accommodated in the contour groove 211, and is advantageous for improving the stability and reliability of the contact of the electrode terminal or the second magnetic attraction member.

[0172] In some embodiments, the charging box 20 includes at least an electrode terminal for charging, and the electrode terminal may not be installed on the battery housing 123. In addition, the battery housing 123 is located at the end of the hook-shaped structure 12, and the degree of deformation that occurs is large, and installing the electrode terminal on the battery housing 123 is disadvantageous for matching with the electrode terminal in the lower housing assembly 21. Specifically, the electrode terminal may not be installed on the battery housing 123, but may be installed on a structure on the earphone 10 that is less deformed, such as the core module 11 or a hard part, thereby facilitating matching between the electrode terminals.

[0173] In some embodiments, as shown in FIG. 19, the lower housing assembly 21 may be provided with a position limiting structure, and in the process of inserting the earphone 10 into the contour groove 211, the core module 11 may be accommodated in the first contour groove region 2111 by the position limiting structure. For example, the position limiting structure may be a locking structure, and the core module 11 may be inserted into the first contour groove region 2111 by a manner of locking with the position limiting structure. For example, the position limiting structure may be a magnetic attraction structure, and the core module 11 may be inserted into the first contour groove region 2111 by a manner of magnetically attracting and engaging with the position limiting structure. Specifically, the first contour groove region 2111 may be provided with a first magnetic attraction structure 231, and the core module 11 is provided with a first magnetic attraction member, and when the core module is inserted into the first contour groove region 2111, the first magnetic attraction member and the first magnetic attraction structure 231 are magnetically attracted and engaged with each other. The core module 11 is accommodated in the first contour groove region 2111 by magnetic attraction, and the description of the above embodiment can be referred to for the specific situation, and the description will be omitted here. The core module 11 is stably accommodated in the first contour groove region 2111 by the above method, which limits the movement of the earphone 10 in the charging box 20 and improves the stability of matching between the electrode terminals.

[0174] 25 and 26, the charging box 20 further includes an upper housing assembly 24 that fits into the lower housing assembly 21 when the charging box 20 is closed. The upper housing assembly 24 is provided with a stopper portion 245 that abuts against the hook-shaped structure 12 when the charging box 20 is closed. In this manner, the stopper portion 245 can apply pressure to the hook-shaped structure 12 when the charging box 20 is closed, thereby limiting the movement of the hook-shaped structure 12 in the thickness direction of the charging box 20. In addition, a frictional force is also generated between the stopper portion 245 and the hook-shaped structure 12, thereby limiting the movement of the hook-shaped structure 12 in other directions, reducing noise caused by the movement of the hook-shaped structure 12 and reducing wear on the earphone 10 and the charging box 20.

[0175] The number of the stopper portion 245 may be one or more. In some embodiments, the number of the stopper portion 245 is one, and the stopper portion 245 abuts the hook-shaped structures 12 of the two earphones 10 simultaneously when the charging box 20 is closed. In this way, the movement of the two hook-shaped structures 12 can be limited simultaneously by one stopper portion 245. In some embodiments, the number of the stopper portion 245 may be two, and when the charging box 20 is closed, the two stopper portions 245 can respectively limit the movement of the hook-shaped structures 12 of the two earphones 10.

[0176] In some embodiments, the hook-shaped structure 12 includes a battery housing 123 that accommodates a battery, and the stopper portion 245 abuts against the battery housing 123 when the charging box 20 is closed. The battery housing 123 is a large-volume part of the hook-shaped structure 12, and the stopper portion 245 can limit the movement of the battery housing 123 to improve the stability when the hook-shaped structure 12 is accommodated in the charging box 20. In addition, the core module 11 can be accommodated in the first contour groove area 2111 by a manner such as engagement or magnetic attraction, thereby limiting the degree of freedom of the core module 11. In this way, when the earphone 10 is accommodated in the contour groove 211, the degree of freedom of the core module 11 and the hook-shaped structure 12 of the earphone 10 are both limited, thereby greatly limiting the degree of freedom of the movement of the earphone 10, preventing the earphone 10 from shaking in the charging box 20, and further avoiding wear of the charging box 20 and the earphone 10, thereby improving the service life.

[0177] In some other embodiments, the movable gap between the battery housing 123 and the side wall of the second contour groove region 2112 is larger than the movable gap between the core module 11 and the side wall of the first contour groove region 2111. The beneficial effects of such an installation can be referred to the description of the above embodiment, and the description will be omitted here. The movable gap between the battery housing 123 and the side wall of the second contour groove region 2112 is large, and the success rate of inserting the earphone 10 into the charging box 20 is increased, but the hook-shaped structure 12 is more likely to shake. Based on this, a stopper portion 245 is further installed to abut against the battery housing 123 when the charging box 20 is closed, thereby improving the success rate of inserting the earphone 10 and reducing the shaking of the hook-shaped structure 12.

[0178] Preferably, when the earphone 10 is accommodated in the contoured groove 211 of the charging box 20, the first magnetic attraction member of the core module 11 engages with the first magnetic attraction structure of the lower housing assembly 21. In this way, the degree of freedom of the core module 11 can be limited to reduce the shaking of the core module 11. Furthermore, by installing the stopper portion 245 to abut against the hook-shaped structure 12, the shaking of the hook-shaped structure 12 can be reduced, and the shaking of the entire earphone 10 can be reduced.

[0179] Preferably, the lower housing assembly 21 may include a position limiting structure 212, which may be installed in the profiling groove 211 or adjacent to the profiling groove 211. After any earphone 10 is placed in the profiling groove 211, the position limiting structure 212 can apply a pressing force toward the bottom of the profiling groove 211 to the hard part or core module 11 of the earphone 10, so as to maintain the relative position between the earphone 10 and the lower housing assembly 21, thereby limiting the degree of freedom of the earphone 10 and reducing the shaking of the earphone 10 in the charging box 20. In addition, the stopper portion 245 abuts against the hook-shaped structure 12, thereby reducing the shaking of the hook-shaped structure 12, and further reducing the shaking of the earphone 10.

[0180] In some embodiments, the stopper portion 245 may be a flexible structure, for example, the material of the stopper portion 245 may be a material such as silicone rubber or rubber. The Shore hardness range of the stopper portion 245 may be 20 to 50. In this way, the stopper portion 245 can be deformed when it abuts against the hook-shaped structure 12, and the wear of the stopper portion 245 on the hook-shaped structure 12 can be reduced, while the force applied by the stopper portion 245 to the hook-shaped structure 12 can be made more uniform, and the stopper portion 245 can be made to fit the shape of the hook-shaped structure 12 better, thereby further restricting the movement of the hook-shaped structure 12 in multiple directions, reducing the shaking in the profiling groove 211 of the earphone 10, and reducing situations such as abnormal noise due to movement.

[0181] In some other embodiments, the stopper portion 245 may include an abutment portion and an elastic portion, and the elastic portion connects the abutment portion and the upper housing assembly 24, and makes the abutment portion abut against the hook-like structure 12 by elastic expansion and contraction when the charging box 20 is closed. In other words, the elastic portion can provide an elastic force when the abutment portion abuts against the hook-like structure 12, so that the abutment portion can apply pressure to the hook-like structure 12 to limit the swing of the hook-like structure 12. The elastic portion may specifically be a structure such as a spring, a torsion spring, etc.

[0182] Preferably, the thickness range of the stopper portion 245 may be 1.2 to 2 mm, for example, 1.2 mm, 1.5 mm, or 2 mm. If the thickness of the stopper portion 245 is less than 1.2 mm, the stopper portion 245 may not sufficiently interfere with the hook-shaped structure 12 and may not generate sufficient pressure to limit the movement of the hook-shaped structure 12. If the thickness of the stopper portion 245 is more than 2 mm, the pressure applied to the hook-shaped structure 12 by the stopper portion 245 may be too large, causing the hook-shaped structure 12 to continue to deform when accommodated, and further causing the hook-shaped structure 12 to lose its original shape, which may affect the wearing experience of the user.

[0183] In some embodiments, the first portion 2112a of the second contour groove region 2112 accommodates a part of the hook-shaped structure 12 (e.g., the battery housing 123), and in the closed state of the charging box 20, the projection of the first portion 2112a of the two second contour groove regions 2112 in the thickness direction of the charging box 20 covers at least a part of the projection of the stopper portion 245 in the thickness direction of the charging box 20. In this way, at least a part of the stopper portion 245 can be abutted against the hook-shaped structure, and the limited area of ​​the stopper portion 245 does not exceed the area where the first portion 2112a of the second contour groove region 2112 is located, thereby reducing excess parts that may occur in the stopper portion 245 and reducing costs.

[0184] 26, in some embodiments, the stopper portion 245 may be a single arc-shaped structure and abuts against two hook-shaped structures 12 at the same time. The range of the projection length (see L in FIG. 26) of the stopper portion 245 in the first reference direction perpendicular to the axis of the rotary shaft mechanism 25 is 20 to 24 mm, and may be, for example, 21 to 23 mm or 22 to 22.5 mm. If the projection length of the stopper portion 245 in the first reference direction is smaller than 20 mm, the contact area between the stopper portion 245 and each hook-shaped structure 12 is reduced, and thus the stopper portion 245 may not be able to abut against two hook-shaped structures 12 at the same time, causing the stopper portion 245 to lose the ability to simultaneously restrict the position of the two hook-shaped structures 12. If the projected length of the stopper portion 245 in the first reference direction is greater than 24 mm, there will still be an excess portion in the length of the stopper portion 245 other than the portion that abuts against the hook-shaped structure 12, and the excess length will increase production costs.

[0185] In some embodiments, the length of the projection of the stopper portion 245 in the second reference direction perpendicular to the first reference direction (see H in FIG. 26) is in the range of 3 to 7 mm, and may be, for example, 3 to 6 mm or 5 to 6 mm. If the length of the projection of the stopper portion 245 in the second reference direction is smaller than 3 mm, the contact area between the stopper portion 245 and the hook-shaped structure 12 is reduced, and the ability of the stopper portion 245 to restrict the movement of the hook-shaped structure 12 is weakened. If the length of the projection of the stopper portion 245 in the second reference direction is larger than 7 mm, the contact area between the stopper portion 245 and the hook-shaped structure 12 is large, and the pressure applied by the stopper portion 245 to the hook-shaped structure 12 is excessively increased, causing undesired deformation of the hook-shaped structure 12.

[0186] In some embodiments, the upper housing assembly 24 is provided with an accommodating groove 244 that accommodates the earphone 10 when the charging box 20 is closed. When the upper housing assembly 24 is closed to the lower housing assembly 21, the accommodating groove 244 accommodates the part of the earphone 10 that is not accommodated in the tracking groove 211, so that the upper housing assembly 24 and the lower housing assembly 21 can be tightly closed. In addition, when the charging box 20 is in a closed state, the side wall of the accommodating groove 244 may further restrict the position of the earphone 10, limiting the movement of the earphone 10 in the charging box 20. In addition, the above-mentioned stopper portion 245 is provided in the accommodating groove 244. When the earphone 10 is accommodated in the tracking groove 211 and the accommodating groove 244 at the same time, the stopper portion 245 can apply pressure to the hook-shaped structure 12, limiting the movement of the hook-shaped structure 12, and reducing the shaking of the hook-shaped structure 12 and the generation of abnormal noise.

[0187] Furthermore, as shown in FIG. 20, the second groove regions 2112 of the two grooves 211 are arranged to cross each other, and when the two grooves 211 respectively accommodate the earphones 10, the hook-shaped structures 12 of the two earphones 10 overlap each other, forming a first overlap point OP1 close to the rotating shaft mechanism 25 and a second overlap point OP2 away from the rotating shaft mechanism 25. In this way, the hook-shaped structures 12 of the two earphones 10 may be accommodated in an overlapping manner, which is advantageous for reducing the volume of the charging box 20. In the direction of the line connecting the first overlap point OP1 and the second overlap point OP2, the region where the stopper portion 245 abuts against the hook-shaped structure 12 is located in the direction where the second overlap point OP2 is away from the first overlap point OP1. The hook-shaped structures 12 overlap each other when accommodated in the grooves 211, and the overlapping portion can limit the degree of freedom of movement of a part of the hook-shaped structure 12. By locating the region where the stopper portion 245 abuts against the hook-shaped structure 12 on the side of the second overlap point OP2 away from the first overlap point OP1, the degree of freedom of the hook-shaped structure 12 can be more effectively reduced, and the movement of the hook-shaped structure 12 can be further limited. Preferably, when the charging box 20 is closed, the stopper portion 245 abuts against a portion of the hook-shaped structure 12 corresponding to the second overlap point OP2. In this way, the hook-shaped structures 12 at the second overlap point OP2 overlap each other, and the thicknesses of the two hook-shaped structures 12 overlap, so that the stopper portion 245 abuts against the portion corresponding to the second overlap point OP2, thereby limiting the degree of freedom of the hook-shaped structure 12 and having a smaller thickness, thereby reducing production costs.

[0188] Preferably, in the closed state of the charging box 20, the distance range from the stopper portion 245 to the side wall adjacent to the second overlap point OP2 of the upper housing assembly 24 is 15 to 20 mm. In this manner, the stopper portion 245 can be abutted against the portion of the hook-shaped structure 12 adjacent to the second overlap point OP2. Since the region adjacent to the second overlap point OP2 of the two hook-shaped structures 12 has an overlapping portion, this region has a large height in the thickness direction of the charging box 20, and thus the thickness of the stopper portion 245 can be reduced. When the distance of the stopper portion 245 from the edge portion adjacent to the second overlap point OP2 of the lower housing assembly 21 is less than 15 mm, the stopper portion 245 is separated from the second overlap point OP2, and the stopper portion 245 can abut against the hook-shaped structure 12 after the thickness increases. If the distance of the stopper portion 245 from the edge of the lower housing assembly 21 adjacent to the second overlap point OP2 is greater than 20 mm, the area where the stopper portion 245 abuts against the hook-like structure 12 decreases, weakening the limiting effect.

[0189] 21 and 22, the charging box 20 may include an upper housing assembly 24 and a rotating shaft mechanism 25 connecting the upper housing assembly 24 and the lower housing assembly 21, thereby allowing the charging box 20 to be opened and closed. The rotating shaft mechanism 25 may include a lower fixed seat 251 integrally molded with the lower housing assembly 21, an upper fixed seat 252 integrally molded with the upper housing assembly 24, and a rotating shaft 253, and the lower fixed seat 251 may be inserted into the upper housing assembly 24 and further pivotally connected to the upper fixed seat 252 via the rotating shaft 253. Furthermore, the rotating shaft mechanism 25 may include a reinforcing member 254 connected to the lower fixed seat 251, and the structural strength of the reinforcing member 254 is greater than that of the lower fixed seat 251, and the rotating shaft 253 is further inserted through the reinforcing member 254 to provide structural reinforcement to the rotating shaft mechanism 25. The reinforcing member 254 and the lower fixed base 251 may be an integrally molded structural member, for example, integrally molded by a metal insert injection molding process, and are two separate structural members, which are connected by one or a combination of adhesive connection, screw connection, locking, etc.

[0190] In addition, the rotating shaft mechanism 25 may include an elastic member 255, one end of which is connected to the lower housing assembly 21, for example, the lower fixed seat 251, and the other end of which is connected to the upper housing assembly 24, so as to maintain the charging box 20 in an open or closed state. In the process of opening or closing the charging box 20, the elastic member 255 is elastically deformed accordingly to provide a certain resistance, and of course, this resistance may be partly derived from the frictional resistance generated when the rotating shaft 253 and its connecting structure rotate.

[0191] 21, the elastic member 255 may be configured as a Z-shaped torsion spring, the basic structure of which is well known to those skilled in the art and will not be described here. A mounting hole 2411 may be provided in one of the lower fixed seat 251 and the upper housing assembly 24, and a mounting groove 2511 may be provided in the other. For example, the mounting hole 2411 may be provided in the upper housing body 241 and located between the two upper fixed seats 252 in the extending direction of the rotating shaft 253, and the mounting groove 2511 may be provided in the lower fixed seat 251 and located between the two sleeve parts 2542 in the extending direction of the rotating shaft 253. In this manner, in the process of attaching the elastic member 255, one end of the elastic member 255 is first inserted into the mounting hole 2411 along the axial direction of the mounting hole 2411, and the other end is further fitted into the mounting groove 2511 along a direction perpendicular to the axial direction of the mounting groove 2511, which is advantageous in reducing the amount of deformation of the elastic member 255 in the process of attaching it and in maintaining the reliability of the elastic member 255. Furthermore, the mounting hole 2411 and the mounting groove 2511 may be provided as a through-hole structure along their respective axial directions.

[0192] 21, the upper fixed seat 252 may be installed in two spaces along the extension direction of the rotating shaft 253, and the lower fixed seat 251 may be located between the two upper fixed seats 252 and installed in the extension direction of the rotating shaft 253 with a space between them, which is advantageous for supporting the rotating shaft 253. The reinforcing member 254 may include a connection portion 2541 connected to the lower fixed seat 251 and two sleeve portions 2542 installed in the extension direction of the rotating shaft 253 with a space between them, and the two sleeve portions 2542 may be located in the space between the lower fixed seat 251 and the two upper fixed seats 252, respectively. Accordingly, the rotating shaft 253 is installed through the lower fixed seat 251, the two sleeve portions 2542 and the two upper fixed seats 252.

[0193] 22, the lower housing assembly 21 may include a lower housing body 213 and a lower housing lining 214 installed inside the lower housing body 213, the lower fixed seat 251 and the lower housing body 213 may be integrally molded plastic parts, and the reinforcing member 254 may be a metal part. The connection part 2541 may be located between the lower housing body 213 and the lower housing lining 214, so that the reinforcing member 254 is not exposed at least when the charging box 20 is in a closed state. Accordingly, the profiling groove 211 and the position limiting structure 212, etc. may be installed on the lower housing lining 214, and the main control circuit board 221 and the electrode terminal 222 thereon, the first magnetic attraction structure 231, the second magnetic attraction structure 232, etc. may be installed between the lower housing body 213 and the lower housing lining 214. Furthermore, the upper housing assembly 24 may include an upper housing body 241 and an upper housing lining 242 installed inside the upper housing body 241, and the upper fixing seat 252 and the upper housing body 241 may be integrally molded plastic parts.

[0194] According to the above method, in the related art, the upper housing assembly 24 is connected to the lower housing assembly 21 through a metal connecting member, that is, the upper housing assembly 24 and the lower housing assembly 21 cannot be connected after the metal connecting member is removed, and the metal connecting member must be exposed. In the present technical solution, the upper housing assembly 24 and the lower housing assembly 21 remain connected after the reinforcing member 254 is removed, and the reinforcing member 254 does not need to be exposed, which is advantageous for reducing the cost of the charging box 20 and for achieving uniform appearance.

[0195] 28 to 31, the charging box 20 may include an upper housing assembly 24 and a rotation shaft mechanism 25 connecting the upper housing assembly 24 and the lower housing assembly 21, thereby allowing the charging box 20 to be opened and closed. The charging box 20 further includes a position limiting mechanism, which limits the angle of rotation of the upper housing assembly 24 relative to the lower housing assembly 21 when the charging box 20 is in an open state. In other words, the position limiting mechanism can limit further relative rotation between the upper housing assembly 24 and the lower housing assembly 21 when the upper housing assembly 24 rotates to a predetermined angle relative to the lower housing assembly 21. Note that the angle at which the upper housing assembly 24 opens relative to the lower housing assembly 21 may be an included angle (see the α angle in FIG. 27) between the lower surface of the lower housing assembly 21 and the upper surface of the upper housing assembly 24. By installing the position limiting mechanism, the angle at which the upper housing assembly 24 opens relative to the lower housing assembly 21 can be limited, thereby reducing the risk of damage to the housing structure of the charging box 20 due to excessive rotation of the upper housing assembly 24, and solving problems such as wear on the surface of the charging box 20 due to housing abutment.

[0196] In some embodiments, the position limiting mechanism is connected to the upper housing assembly 24 and the lower housing assembly 21, respectively, to limit the angle at which the upper housing assembly 24 opens relative to the lower housing assembly 21. For example, the position limiting mechanism may include two links, which are hinged to each other and to the upper housing assembly 24 and the lower housing assembly 21, respectively. When the upper housing assembly 24 rotates to a predetermined angle relative to the lower housing assembly 21, the two links are positioned in a straight line to limit further rotation of the upper housing assembly 24 relative to the lower housing assembly 21. When the charging box 20 is transformed from the open state to the closed state, the two links rotate relative to each other, and the connection portion with the upper housing assembly 24 and the connection portion with the lower housing assembly 21 approach each other. In other words, the two links limit the rotation of the upper housing assembly 24 relative to the lower housing assembly 21 to the open state, but do not limit the rotation of both to the closed state.

[0197] In some embodiments, the position limiting mechanism includes a first position limiting member 271 and a second position limiting member 272, and the second position limiting member 272 is connected to the upper housing assembly 24 and can move following the upper housing assembly 24. The first position limiting member 271 is connected to the lower housing assembly 21 and can move following the lower housing assembly 21. The first position limiting member 271 and the second position limiting member 272 abut against each other when the upper housing assembly 24 rotates to a predetermined angle relative to the lower housing assembly 21, thereby limiting further rotation of the upper housing assembly 24 relative to the lower housing assembly 21. Preferably, the predetermined angle ranges from 90 degrees to 110 degrees, and if the predetermined angle is less than 90 degrees, that is, if the included angle between the upper housing assembly 24 and the lower housing assembly 21 is an acute angle, the upper housing assembly 24 will tend to close again due to gravity or the elastic member of the rotating shaft mechanism 25, which is disadvantageous for the user to remove or store the earphone 10. In addition, if the predetermined angle is less than 90 degrees, when the user removes or stores the earphone 10, it will interfere with the upper housing assembly 24, affecting the user's usage experience. If the predetermined angle is greater than 110 degrees, the angle at which the upper housing assembly 24 opens relative to the lower housing assembly 21 is too large, increasing the strength requirements for the rotation shaft mechanism 25 and the position limiting mechanism. In addition, if the angle at which the upper housing assembly 24 opens relative to the lower housing assembly 21 is too large, the length of the charging box 20 when opened will be long, and the length of the charging box 20 when opened is the distance from the farthest end of the upper housing assembly 24 from the rotation shaft mechanism to the farthest end of the lower housing assembly 21 from the rotation shaft mechanism. For example, in a limit situation where the charging box 20 is dropped or pressed, if the length of the charging box 20 when opened is long, the moment received by the upper housing assembly 24 and the lower housing assembly 21 will be large, increasing the risk of damage to the charging box 20.

[0198] In some embodiments, a slot 247 is provided at an edge of the upper housing assembly 24 adjacent to the lower housing assembly 21, and the rotating shaft mechanism 25 includes a rotating shaft 253 bridged at both ends of the slot 247, and the upper housing assembly 24 rotates relative to the lower housing assembly 21 around the rotating shaft 253. In some embodiments, the predetermined angle is smaller than the angle at which the upper housing assembly 24 opens relative to the lower housing assembly 21 when the slot edge of the slot 247 abuts against the outer wall of the lower housing assembly 21. In addition, the slot 247 can facilitate the rotation of the upper housing assembly 24 relative to the lower housing assembly 21. When the slot edge of the slot 247 abuts against the outer wall of the lower housing assembly 21, the rotation of the upper housing assembly 24 relative to the lower housing assembly 21 is also limited. However, due to limitations in the materials and structures of the upper housing assembly 24 and the lower housing assembly 21, the position limiting method by abutting the slot edge places high demands on the structural strength of the housing of the charging box 20 and increases the cost of processes and materials. By adding a position limiting mechanism, the angle at which the upper housing assembly 24 opens relative to the lower housing assembly 21 can be limited, thereby improving the strength of the position limiting mechanism, while also reducing the requirements for the structural strength of the charging box and reducing costs.

[0199] Furthermore, when the slot edge of the slot 247 abuts against the outer wall of the lower housing assembly 21, pressure is applied to the outer wall of the lower housing assembly 21, which is likely to cause indentations on the outer wall of the lower housing assembly 21, affecting the aesthetics. In addition, when the abutment area where indentations occur on the outer wall of the lower housing assembly 21 receives force, a stress concentration phenomenon occurs, which significantly affects the strength of the lower housing assembly 21. In order to avoid the stress concentration phenomenon in the abutment area, a predetermined angle is set to be smaller than the angle at which the upper housing assembly 24 opens relative to the lower housing assembly 21 when the slot edge of the slot 247 abuts against the outer wall of the lower housing assembly 21. In this way, when the upper housing assembly 24 opens relative to the lower housing assembly 21 to a predetermined angle, further rotation is limited by the position limiting mechanism, which prevents the slot edge of the slot 247 from abutting against the outer wall of the lower housing assembly 21. For example, the angle at which the upper housing assembly 24 and the lower housing assembly 21 can open when the slot edge of slot 247 abuts the outer wall of the lower housing assembly 21 is 120 degrees, the predetermined angle is 110 degrees, and the position limiting mechanism limits further rotation of the upper housing assembly 24 when the upper housing assembly 24 opens to 110 degrees relative to the lower housing assembly 21, thereby avoiding abutment between the slot edge of slot 247 and the outer wall of the lower housing assembly 21.

[0200] In some embodiments, the rotating shaft mechanism 25 includes a first fixed seat 256 attached to the lower housing assembly 21 and a second fixed seat 257 attached to the upper housing assembly 24, and the rotating shaft 253 is provided through the first fixed seat 256 and the second fixed seat 257. By providing the first fixed seat 256 and the second fixed seat 257, the strength of the rotating shaft mechanism 25 can be improved. The position limiting mechanism includes a first position limiting member 271 connected to the first fixed seat 256 and a second position limiting member 272 connected to the second fixed seat 257, and the first position limiting member 271 and the second position limiting member 272 abut against each other when the upper housing assembly 24 rotates to a predetermined angle relative to the lower housing assembly 21, thereby limiting further rotation of the upper housing assembly 24 relative to the lower housing assembly 21.

[0201] Preferably, as shown in FIG. 28 and FIG. 29, the extension direction of the first position limiting member 271 and the extension direction of the second position limiting member 272 are perpendicular to each other. In this way, the success rate of the abutment between the first position limiting member 271 and the second position limiting member 272 can be improved. In some embodiments, the extension direction of one of the first position limiting member 271 and the second position limiting member 272 is set along the axial direction of the rotation shaft 253, and the extension direction of the other is set along the radial direction of the rotation shaft 253. In this way, the relative rotation between the first position limiting member 271 and the second position limiting member 272 can be matched to the rotation about the rotation shaft 253 between the upper housing assembly 24 and the lower housing assembly 21, whereby the first position limiting member 271 and the second position limiting member 272 can limit the rotation about the rotation shaft 253 between the upper housing assembly 24 and the lower housing assembly 21.

[0202] In some embodiments, the first position limiting member 271 and the first fixed seat 256 are integrally formed metal members. Or, the second position limiting member 272 and the second fixed seat 257 are integrally formed metal members. Or, the first position limiting member 271 and the first fixed seat 256 are integrally formed metal members, and the second position limiting member 272 and the second fixed seat 257 are integrally formed metal members. The first fixed seat 256 and the second fixed seat 257 are installed as metal members, so that both have sufficient strength and a small volume, thereby reducing the space occupied by the charging box 20 and being advantageous for reducing the volume of the charging box 20. By integrally molding first position limiting member 271 and first fixed seat 256, or by integrally molding second position limiting member 272 and second fixed seat 257, when first position limiting member 271 and second position limiting member 272 come into contact with each other and receive a force, the moment is transmitted to charging box 20 via first fixed seat 256 or second fixed seat 257, and the connection structure between first fixed seat 256 and second fixed seat 257 and charging box 20 has high connection strength. Therefore, by integrally molding first position limiting member 271 and first fixed seat 256, or by integrally molding second position limiting member 272 and second fixed seat 257, it is possible to improve stability when first position limiting member 271 and second position limiting member 272 come into contact with each other.

[0203] Exemplarily, as shown in FIGS. 30 to 32, one of the first position limiting member 271 and the second position limiting member 272 is provided with a position limiting groove 2721, and the other of the first position limiting member 271 and the second position limiting member 272 engages with the position limiting groove 2721 when the charging box 20 is opened to limit the rotation of the upper housing assembly 24 relative to the lower housing assembly 21. In some embodiments, the second position limiting member 272 may be provided with a position limiting groove 2721, and the first position limiting member 271 is inserted into the position limiting groove 2721 after the upper housing assembly 24 is opened to a first angle relative to the lower housing assembly 21, and the first angle is smaller than a predetermined angle. When the upper housing assembly 24 rotates to a predetermined angle relative to the lower housing assembly 21, the first position limiting member 271 abuts against a groove wall of the position limiting groove 2721. Due to the abutting engagement between the first position limiting member 271 and the position limiting groove 2721, when the position limiting mechanism receives a force in another direction, the groove wall of the position limiting groove 2721 can also limit the position of the first position limiting member 271, improving the strength and reliability of the position limiting mechanism. When the charging box 20 rotates from the open state to the closed state, the first position limiting member 271 can escape from the position limiting groove 2721, thereby reducing the influence of the position limiting mechanism when the charging box 20 is closed. In some other embodiments, the first position limiting member 271 may be provided with a position limiting groove 2721, and the second position limiting member 272 is inserted into the position limiting groove 2721 after the upper housing assembly 24 is opened to a first angle relative to the lower housing assembly 21.

[0204] Furthermore, when the charging box 20 is in an open state, the included angle between the extension direction of the first position limiting member 271 and the extension direction of the second position limiting member 272 is an obtuse angle. In this way, even if the length of the second position limiting member 272 or the first position limiting member 271 is short, it can be smoothly inserted into the position limiting groove 2721 or smoothly escaped from the position limiting groove 2721. When the extension direction of the first position limiting member 271 and the extension direction of the second position limiting member 272 are a right angle and an acute angle, the position limiting groove 2721 needs a long length to ensure that the first position limiting member 271 or the second position limiting member 272 escapes smoothly, which increases the volume of the entire rotating shaft mechanism 25 and occupies more space of the charging box 20.

[0205] In some embodiments, the connection and engagement of the lower housing assembly 21, the position limiting mechanism, and the rotating shaft mechanism 25 can refer to the following exemplary description, where two first support parts 215 spaced apart along the axial direction of the rotating shaft 253 and a first reinforcing part 216 located between the two first support parts 215 are installed inside the lower housing assembly 21, and the first reinforcing part 216 may be a reinforcing rib structure or a structure having a thickness thicker than the other side walls of the charging box 20, and the first reinforcing part 216 can enhance the structural strength of the charging box 20, so that the charging box 20 can stably support the rotating shaft mechanism 25 and the position limiting mechanism. The two first supports 215 are each provided with a first fitting groove 2151, and the first fixed seat 256 includes a first plate-shaped body 2561, and the lower edge of the first plate-shaped body 2561 facing the lower housing assembly 21 is inserted into the first fitting groove 2151 of the two first supports 215, and the first plate-shaped body 2561 abuts against the first reinforcing portion 216. The first reinforcing portion 216 can improve the structural strength of the lower housing assembly 21 itself, while the engagement between the first fixed seat 256 and the first reinforcing portion 216 improves the engagement strength between the rotating shaft mechanism 25 and the lower housing assembly 21, making it possible to easily assemble the rotating shaft mechanism 25 to the lower housing assembly 21. Preferably, the lower housing assembly 21 includes a lower housing body 213 and a lower housing lining 214, and the first support portion 215, the first reinforcement portion 216 and the first fixing seat 256 are installed between the lower housing body 213 and the lower housing lining 214.

[0206] In some embodiments, the first fixing seat 256 further includes two first extending portions 2562, the two first extending portions 2562 extending from the first plate-shaped body 2561 toward the first reinforcing portion 216, the first reinforcing portion 216 being located between the two first extending portions 2562, the first extending portion 2562 protruding from an upper edge portion of the first plate-shaped body 2561, and the first extending portion 2562 is provided with a first rotating shaft hole through which the rotating shaft 253 passes. The first position limiting member 271 is located at one end of the first extending portion 2562 remote from the first plate-shaped body 2561. In this way, the stability of the engagement between first fixing seat 256 and first reinforcing portion 216 is improved, and first position limiting member 271 and first fixing seat 256 have sufficient structural strength, thereby improving the stability of charging box 20 when in the open state.

[0207] In some embodiments, the connection and engagement of the upper housing assembly 24, the position limiting mechanism, and the pivot mechanism 25 may refer to the following exemplary description. Two second support parts 243 are provided inside the upper housing assembly 24, spaced apart along the axial direction of the rotating shaft 253, and a second mating groove 2431 is provided in the two second support parts 243. The second fixed seat 257 includes a second plate-shaped body 2571 and two second extension parts 2572, and the upper edge part of the second plate-shaped body 2571 facing the upper housing assembly is inserted into the second mating groove 2431 of the two second support parts 243. The second extension part 2572 is connected to the second plate-shaped body 2571 and extends toward the slot 247. A second rotating shaft hole through which the rotating shaft 253 passes is provided in the second extension part 2572, and the first position limiting member 271 is provided in the second extension part 2572. In this way, the strength of engagement between the rotating shaft mechanism 25 and the upper housing assembly 24 can be improved, and the rotating shaft mechanism 25 can be easily assembled to the upper housing assembly 24.

[0208] Further, the second reinforcing parts 246 are installed inside the upper housing assembly 24, located at both ends of the slot 247, and the second extension part 2572 includes a first sub-extension part 2572a located between the two second reinforcing parts 246 and a second sub-extension part 2572b connected to the first sub-extension part 2572a and extending along the axial direction of the rotation shaft 253, and the second sub-extension part 2572b is further connected to the second reinforcing part 246. For example, the second sub-extension part 2572b can be engaged with the second reinforcing part 246 by a fixing member such as a screw or a rivet, thereby improving the engagement strength and stability between the first fixing seat 256 and the upper housing assembly 24.

[0209] 22, the charging box 20 may include a magnetically permeable member 261 installed in the lower housing assembly 21 and a permanent magnet 262 installed in the upper housing assembly 24. For example, the magnetically permeable member 261 is fixed to the inner side of the lower housing lining 214 away from the upper housing assembly 24, and the permanent magnet 262 is fixed to the inner side of the upper housing lining 242 away from the lower housing assembly 21, thus favoring a reduction in the distance between the magnetically permeable member 261 and the permanent magnet 262 after the charging box 20 is closed. A Hall sensor 223 is installed on the main control circuit board 221, i.e., the Hall sensor 223 is directly fixed to the main control circuit board 221, and the Hall sensor 223 is installed adjacent to the magnetically permeable member 261. In this way, in the process of the charging box 20 being switched between the open state and the closed state, the permanent magnet 262 magnetizes the magnetic permeable member 261 to different degrees, and the Hall sensor 223 senses the magnetic field of the magnetic permeable member 261 to detect the open state or the closed state. In other words, in the closed state, the magnetic permeable member 261 makes the magnetic field generated by the permanent magnet 262 concentrate more on the Hall sensor 223, thus improving the detection reliability of the Hall sensor 223 and favoring the reduction of the volume of the permanent magnet 262.

[0210] According to the above method, compared with the related art in which the Hall sensor 223 is fixed to the inside of the lower housing lining 214 and connected to the main control circuit board 221 via a conductor, the present technical solution directly fixes the Hall sensor 223 to the main control circuit board 221, which is advantageous in simplifying the wiring of the charging box 20.

[0211] 22 and 23, the orthogonal projection of each tracing groove 211 and the magnetic permeable member 261 onto the main control circuit board 221 may be shifted to allow the magnetic permeable member 261 to be as close as possible to the permanent magnet 262 after the charging box 20 is closed. For example, when viewed from directly above the charging box 20, the magnetic permeable member 261 is located at any one of a first position (e.g., shown in a dashed frame P1 in FIG. 23), a second position (e.g., shown in a dashed frame P2 in FIG. 23), and a third position (e.g., shown in a dashed frame P3 in FIG. 23) on the outer periphery of the two tracing grooves 211.

[0212] Illustratively, as shown in FIG. 23, when viewed from directly above the charging box 20, the two profiling grooves 211 may be mirror-symmetrical with respect to a symmetry axis (for example, as shown by the dashed line SA in FIG. 23), thereby allowing the two earphones 10 to be neatly accommodated in the charging box 20. The magnetically permeable member 261 may be located on the symmetry axis SA and away from the rotating shaft mechanism 25. In this way, it is advantageous to increase the difference in the magnetic field sensed by the Hall sensor 223 at the magnetically permeable member 261 in each of the open state and the closed state, thereby improving the reliability of detection by the Hall sensor 223. Note that the symmetry axis SA may be parallel to the line segment OP1OP2, or may overlap with the line segment OP1OP2.

[0213] 22, the orthogonal projections of the magnetic permeable member 261 and the Hall sensor 223 on the main control circuit board 221 may at least partially overlap, which is advantageous for reducing the magnetic gap between the magnetic permeable member 261 and the Hall sensor 223, thereby concentrating the magnetic field generated by the permanent magnet 262 more on the Hall sensor 223, particularly in the closed state. The Hall sensor 223 may be installed on the side of the main control circuit board 221 facing the magnetic permeable member 261 so as to reduce the magnetic gap between the magnetic permeable member 261 and the Hall sensor 223, and the Hall sensor 223 and the magnetic permeable member 261 may be installed at an interval in the normal direction of the main control circuit board 221 so as to reduce the risk of collision between the magnetic permeable member 261 and the Hall sensor 223, particularly in a limit situation such as the charging box 20 being dropped.

[0214] For example, as shown in FIG. 22, in the closed state, the orthogonal projections of the permanent magnet 262 and the magnetic permeable member 261 onto the main control circuit board 221 may at least partially overlap, which is advantageous for reducing the magnetic gap between the permanent magnet 262 and the magnetic permeable member 261, thereby concentrating the magnetic field generated by the permanent magnet 262 more on the Hall sensor 223, particularly in the closed state.

[0215] Exemplarily, as shown in FIG. 33 (FIG. 33 is a cross-sectional view of the charging box 20 when it is closed), the charging box 20 may include a lower housing assembly 21, an upper housing assembly 24, a main control circuit board 221 and a magnetic attraction structure installed in the lower housing assembly 21, and an upper housing magnet installed in the upper housing assembly 24. The upper housing magnet is the above-mentioned permanent magnet 262, and a Hall sensor 223 may be installed in the lower housing assembly 21, and the Hall sensor 223 may be electrically connected to the main control circuit board 221. The magnetic attraction structure maintains the accommodation state of the earphone 10 in the charging box 20 by magnetic attraction. On this basis, in the process of closing the upper housing assembly 24, the Hall sensor 223 can further detect the closing of the upper housing assembly 24 by detecting the proximity of the upper housing magnet, thereby realizing the detection of the closing of the charging box 20. The type of the Hall sensor 223 may be a unipolar Hall switch triggered by an S pole or a unipolar Hall switch triggered by an N pole, and is not specifically limited here. Hereinafter, the present application will take the Hall sensor 223 of the S-pole trigger type as an example for description. When the Hall sensor 223 is of the N-pole trigger type, the principle is the same and the description will be omitted. It should be noted that, based on the relevant principle when the Hall sensor 223 is of the S-pole trigger type described below, a person skilled in the art can achieve the same or similar technical effect when the Hall sensor 223 is of the N-pole trigger type by adjusting the relevant magnetic pole characteristics. Therefore, the technical means when the Hall sensor 223 is of the N-pole trigger type are also included in the scope of protection of the present application.

[0216] The Hall sensor 223 has two kinds of output states, which can output a high level and a low level. The Hall sensor 223 has a sensing surface, and a magnetic field component that is perpendicular to the sensing surface of the Hall sensor 223 and directed in the positive direction of the sensing surface acts on the carrier of the Hall sensor 223, deflecting the carrier, thereby changing the output state of the Hall sensor 223. For the specific principle, at least the prior art can be referred to, and a description is omitted here. Taking the Hall sensor 223 as an example of an S pole trigger type, in the process in which the S pole of the magnet gradually approaches the Hall sensor 223, the positive magnetic field component generated by the magnet and perpendicular to the sensing surface of the Hall sensor 223 in the Hall sensor 223 gradually increases, and when it increases to exceed a certain threshold (for example, when the magnetic field strength is 2 mT or 3 mT), the Hall sensor 223 changes from a high level to a low level.

[0217] In the related art, the charging box 20 further includes a magnetic attraction structure that engages with the earphone 10 or an auxiliary magnet that assists in closing the charging box 20. In addition to the magnetic field acting on the Hall sensor when the upper housing magnet approaches, the magnetic fields of the magnetic attraction structure and auxiliary magnets in the charging box 20 also have a certain effect on the Hall sensor. Exemplarily, the magnetic attraction structure installed in the lower housing assembly 21 affects the Hall sensor, but since its volume is relatively small, its effect on the Hall sensor 223 can be ignored. In other words, the magnetic field strength that the magnetic attraction structure acts on the Hall sensor 223 cannot reach the threshold that changes the output state of the Hall sensor 223 (i.e., the presence or absence of the magnetic attraction structure does not change the output state of the Hall sensor 223). In this way, the cause of the change in state of the Hall sensor 223 is mainly due to the proximity of the upper housing magnet. Taking the Hall sensor 223 as an example of a type in which the S pole trigger is used, if the volume of the magnetic attraction structure is small, the output state of the Hall sensor 223 does not change due to the magnetic field of the magnetic attraction structure. When the upper housing assembly 24 is closed, the south pole of the upper housing magnet approaches the Hall sensor 223, the Hall sensor 223 is subjected to the magnetic field of the upper housing magnet, the magnetic field strength reaches a threshold value for changing the output state, and the output state changes. For example, the change in the output state of the Hall sensor 223 may be from a high level to a low level, and the circuit in the main control circuit board may be designed to determine that the charging box 20 is closed when it detects that the Hall sensor 223 outputs a low level.

[0218] In some embodiments, the magnetic attraction structure with a small volume has a weak attraction force on the earphone 10, which is disadvantageous for the earphone 10 to be accommodated in the charging box 20. Therefore, it is necessary to increase the volume of the magnetic attraction structure to strengthen the attraction force on the earphone 10, thereby improving the accommodation stability of the earphone 10. For example, the first magnetic attraction structure can use a magnet with a diameter of 8 to 15 mm and a thickness of 2 to 4 mm. However, when the volume of the magnetic attraction structure increases, the effect of the magnetic field generated by the magnetic attraction structure on the Hall sensor 223 cannot be ignored, that is, the magnetic field strength at the Hall sensor 223 of the magnetic attraction structure reaches a threshold value that changes the output state of the Hall sensor 223, and the magnetic field of the magnetic attraction structure can change the output state of the Hall sensor 223 when the charging box 20 is not closed. For example, if the upper housing magnet is installed with its south pole facing downwards, when the magnetic field component perpendicular to the sensing surface of the Hall sensor 223 of the magnetic attraction structure faces the positive direction of the sensing surface and exceeds the threshold for changing the output state of the Hall sensor 223, when the upper housing magnet approaches the Hall sensor 223, the directions of the components perpendicular to the sensing surface of the Hall sensor 223 of the upper housing magnet and the magnetic attraction structure are the same, so the magnetic field of the Hall sensor 223 is strengthened, but the output state of the Hall sensor 223 cannot be changed, and the detection of whether the box is open or closed is lost. In order to solve the above technical problems, the present application provides the following embodiments.

[0219] In some embodiments, the three-way cooperative relationship of the magnetic attraction structure, the upper housing magnet, and the Hall sensor 223 may be set as follows: when the upper housing assembly 24 is in an open state relative to the lower housing assembly 21, the Hall sensor 223 is in a first state due to the magnetic field of the magnetic attraction structure, and when the upper housing assembly 24 is in a closed state relative to the lower housing assembly 21, the upper housing magnet cancels the effect of the magnetic field of the magnetic attraction structure on the Hall sensor 223 to switch the Hall sensor 223 to a second state different from the first state. The first state is one of the states in which the Hall sensor 223 outputs a high level or the Hall sensor 223 outputs a low level, and the second state is another state different from the first state, of the states in which the Hall sensor 223 outputs a high level or the Hall sensor 223 outputs a low level. In other words, by setting up the cooperative relationship of the magnetic attraction structure, the upper housing magnet, and the Hall sensor 223, when the charging box 20 is closed, the Hall sensor 223 can change its output state due to the upper housing magnet.

[0220] Similarly, the above embodiment is exemplarily described by taking the S-pole triggered unipolar Hall switch as an example. The magnetic field in the Hall sensor 223 of the magnetic attraction structure reaches a threshold value that changes the output state of the Hall sensor 223 (compared to the state when the Hall sensor 223 is not completely interfered with by the magnetic field, i.e., the presence or absence of the magnetic attraction structure affects the output state of the Hall sensor 223), for example, the magnetic field is greater than 3 mT, and the Hall sensor 223 is in a first state and outputs a low level. In this case, in order to ensure the validity of the closing detection, when the upper housing assembly 24 is closed, it is necessary to change the magnetic field in the Hall sensor 223 so that the upper housing magnet approaches the Hall sensor 223 and the Hall sensor 223 is in a second state, i.e., outputs a high level. In this way, the circuit in the main control circuit board is set up to determine that the charging box 20 is closed when it is detected that the Hall sensor 223 outputs a high level, thereby realizing effective closing detection. Specifically, when the upper housing assembly 24 is in a closed state relative to the lower housing assembly 21, the magnetic pole of the magnetic attraction structure facing the upper housing assembly 24 is opposite in polarity to the magnetic pole of the upper housing magnet facing the lower housing assembly 21. For example, when the S pole of the magnetic attraction structure faces the upper housing assembly 24 and the included angle between the line connecting the magnetic attraction structure and the Hall sensor 223 and the sensing surface of the Hall sensor 223 is less than 45 degrees, the magnetic attraction structure can trigger the Hall sensor 223 to a first state, i.e., a low level, in the positive direction in which the component perpendicular to the sensing surface of the Hall sensor 223 faces the sensing surface. The N pole of the upper housing magnet is placed toward the lower housing assembly 21 when the charging box 20 is closed, and thus, when the charging box 20 is closed, the component perpendicular to the sensing surface of the Hall sensor 223 faces the negative direction of the sensing surface.In other words, when the charging box 20 is closed, the magnetic fields of the upper housing magnet and the magnetic attraction structure in the Hall sensor 223 are offset with each other, so that the component perpendicular to the sensing surface of the compound magnetic field of the magnetic attraction structure and the upper housing magnet in the Hall sensor 223 is smaller than the trigger threshold of the Hall sensor 223, and the component perpendicular to the sensing surface of the compound magnetic field is directed toward the negative direction of the sensing surface, thereby triggering the Hall sensor 223 to the second state, i.e., the high-level state. The main control circuit board 221 can detect whether the charging box 20 is closed by detecting the output state of the Hall sensor 223, and the above method can also smoothly realize the detection of the box closing when the Hall sensor 223 is interfered with by the magnetic attraction structure.

[0221] In some embodiments, adjusting the magnetic field distribution at the Hall sensor 223 of the upper housing magnet can cooperate with the magnetic field distribution at the Hall sensor 223 of the magnetic attraction structure, thereby changing the direction of the total magnetic field acting on the Hall sensor 223 when the upper housing magnet is in close proximity to the Hall sensor 223. The difference in the magnetic field distribution at the Hall sensor 223 of the upper housing magnet can be expressed by the difference in the physical parameters of the upper housing magnet.

[0222] In some embodiments, the upper housing magnet may have a diameter range of 4-6 mm and a thickness of 1-8 mm. Illustratively, as shown in FIG. 34 (FIG. 34 is a schematic diagram of the simulation results of the magnetic field at the Hall sensor 223 for upper housing magnets of different thicknesses), FIG. 34(a) is a schematic diagram of the simulation results of the magnetic field at the Hall sensor 223 when the charging box 20 is in the open state and the closed state, respectively, when the earphone 10 is not housed. FIG. 34(b) is a schematic diagram of the simulation results of the magnetic field at the Hall sensor 223 when the charging box 20 is in the open state and the closed state, respectively, when the earphone 10 is housed. The positive and negative values ​​in FIG. 34 respectively represent the positive and negative directions of the sensing surface corresponding to the total magnetic field near the Hall sensor. For example, when the magnetic attraction structure uses a permanent magnet with a diameter of 10 mm and a thickness of 2.5 mm, and the charging box 20 does not accommodate the earphone 10, the magnetic attraction structure generates a magnetic field in the Hall sensor 223 with a direction toward the positive direction of the sensing surface of the Hall sensor 223 and a magnetic field strength of 6.5 mT, in which case the Hall sensor 223 is in a low level state under the influence of the magnetic field of the magnetic attraction structure. After the upper housing assembly 24 is closed, the upper housing magnet cancels out the magnetic field generated by the magnetic attraction structure in the Hall sensor 223, and reverses the magnetic field here, so that the magnetic field direction in the Hall sensor 223 is toward the negative direction of the sensing surface and the magnetic field strength is 5.1 mT, in which case the Hall sensor 223 is in a high level state. Different dimensions of the upper housing magnet have different effects on the Hall sensor 223, for example, when the diameter of the upper housing magnet is 5 mm, the magnetic field strength after reversal in the Hall sensor 223 also gradually increases with the increase in the thickness of the upper housing magnet.

[0223] In some embodiments, the earphone 10 is further provided with a first magnetic attraction member that engages with the magnetic attraction structure, and the first magnetic attraction member is provided so that the Hall sensor 223 is in a first state when the earphone 10 is housed in the charging box 20 and the upper housing assembly 24 is in an open state, and the first magnetic attraction member is provided so that the Hall sensor 223 is in a second state when the earphone 10 is housed in the charging box 20 and the upper housing assembly 24 is in a closed state. When the earphone 10 is placed in the charging box 20, the first magnetic attraction member provided on the earphone 10 also has a different effect on the magnetic field at the Hall sensor 223 than the magnetic attraction structure, and the component of the first magnetic attraction member perpendicular to the sensing surface of the Hall sensor 223 may be directed in the positive direction of the sensing surface, and may also be directed in the negative direction of the sensing surface. However, the first magnetic attraction member is provided so that it only affects the magnitude of the magnetic field perpendicular to the sensing surface of the Hall sensor 223, and does not affect the direction of the total magnetic field at the location. In other words, putting the earphone 10 in has no effect on the output state of the Hall sensor 223. For example, FIG. 34(b) is a schematic diagram of a simulation result when the earphone 10 is in the charging box 20. The schematic diagram is created when the magnetic attraction structure uses a permanent magnet with a diameter of 10 mm and a thickness of 2.5 mm, and the upper housing magnet uses a permanent magnet with a diameter of 5 mm and a thickness of 2 mm. When the earphone 10 is in the charging box 20, the magnetic field at the Hall sensor 223 is a magnetic field with a magnetic field direction toward the positive direction of the sensing surface and a magnetic field strength of 7.1 mT, in this case, the Hall sensor 223 outputs a low level. After the upper housing assembly 24 is closed, the upper housing magnet reverses the magnetic field at the Hall sensor 223 to a magnetic field with a magnetic field direction toward the negative direction of the sensing surface and a magnetic field strength of 4.5 mT, in this case, the Hall sensor 223 outputs a high level.

[0224] In some embodiments, the earphone 10 further includes a second magnetic attraction member independent of the first magnetic attraction member, and the magnetic attraction structure includes a second magnetic attraction structure that magnetically attracts and engages with the second magnetic attraction member. The first magnetic attraction structure 231 can form a first magnetic attraction matching pair with the first magnetic attraction member in the earphone 10, and the second magnetic attraction structure 232 can form a second magnetic attraction matching pair with the second magnetic attraction member in the earphone 10, and the electrode terminal 222 and the electrode terminal 151 are in one-to-one contact with each other through the first magnetic attraction matching pair and the second magnetic attraction matching pair. In this way, after the electrode terminal 222 and the electrode terminal 151 are paired, they are located between the first magnetic attraction matching pair and the second magnetic attraction matching pair, so that the contact between the earphone 10 and the charging box 20 is better. The volumes of the second magnetic attraction member and the second magnetic attraction structure are smaller than those of the first magnetic attraction member and the first magnetic attraction structure 231, and the distance from the Hall sensor 223 to the first magnetic attraction structure 231 is smaller than the distance from the Hall sensor 223 to the second magnetic attraction structure. In this way, the effect of the second magnetic attraction structure on the magnetic field in the Hall sensor 223 can be reduced, and the interference with the output state of the Hall sensor 223 can be reduced.

[0225] In some embodiments, a magnetic permeable member 261 is further installed in the lower housing assembly 21, which can change the magnetic field distribution of the upper housing magnet, thereby concentrating the magnetic field of the upper housing magnet to increase the influence of the upper housing magnet on the Hall sensor 223. When the upper housing assembly 24 is closed, as the upper housing magnet gradually approaches the magnetic permeable member 261, the magnetic field of the upper housing magnet magnetizes the magnetic permeable member 261, and the magnetic permeable member 261 can affect the magnetic field distribution in the Hall sensor 223. Furthermore, the magnetic field generated by the magnetic permeable member 261 offsets the magnetic field effect on the Hall sensor 223 of the magnetic attraction structure, thereby switching the Hall sensor 223 to a second state different from the first state. In the process of switching the charging box 20 between the open state and the closed state, the upper housing magnet magnetizes the magnetic permeable member 261 to different degrees, and the Hall sensor 223 senses the magnetic field of the magnetic permeable member 261 to detect the above-mentioned open state or the above-mentioned closed state. In other words, in the aforementioned closed state, the magnetic permeable member 261 can make the magnetic field generated by the upper housing magnet more concentrated on the Hall sensor 223, thus favoring to improve the detection reliability of the Hall sensor 223 and to reduce the volume of the upper housing magnet. In the above manner, compared with the related art in which the Hall sensor 223 is fixed to the inside of the lower housing lining 214 and connected to the main control circuit board 221 through a conductor, the present technical solution can directly fix the Hall sensor 223 to the main control circuit board 221, which is favorable to simplify the wiring of the charging box 20.

[0226] In some embodiments, by making the distance from the Hall sensor 223 to the magnetically attracted member 261 smaller than the distance from the Hall sensor 223 to the magnetically attracted structure, the magnetic field concentrated by the magnetically attracted member 261 can be brought closer to the Hall sensor 223, and the magnetic field of the magnetically attracted structure that can be concentrated by the magnetically attracted member 261 is limited, thereby enhancing the effect of the magnetic field concentrated by the magnetically attracted member 261 on the Hall sensor 223, reducing the influence of the magnetic field of the magnetically attracted structure, and favoring the reversal of the magnetic field in the Hall sensor 223.

[0227] In some embodiments, in the thickness direction of the charging box 20, when the upper housing assembly 24 is in the closed state, the upper housing magnet and the magnetic permeable member 261 can be installed so that their orthogonal projections in the thickness direction at least partially overlap, and thus the distance between the upper housing magnet and the magnetic permeable member 261 in the first reference direction or the second reference direction can be adjusted, and by shortening the distance between the upper housing magnet and the magnetic permeable member 261 in the first reference direction or the second reference direction, it is advantageous to reduce the magnetic gap between the upper housing magnet and the magnetic permeable member 261, thereby concentrating the magnetic field generated by the permanent magnet 262 more on the Hall sensor 223, and particularly, in the closed state, even if the volume of the upper housing magnet is small, a magnetic field of sufficient strength can be generated in the Hall sensor 223. Preferably, when the upper housing assembly 24 is in the closed state, the centroids of the upper housing magnet and the magnetic permeable member 261 can be installed so that their orthogonal projections in the thickness direction overlap.

[0228] In some embodiments, when the upper housing assembly 24 is in a closed state, the relative positions of the magnetic permeable member 261 and the upper housing magnet mounted in the charging box 20 can be adjusted to adjust the distance between the upper housing magnet and the magnetic permeable member 261 in the thickness direction. By shortening the distance between the upper housing magnet and the magnetic permeable member 261 in the thickness direction, it is advantageous to reduce the magnetic gap between the upper housing magnet and the magnetic permeable member 261, and by improving the magnetic field concentration ability of the magnetic permeable member 261 on the upper housing magnet, the magnetic field generated by the permanent magnet 262 is more concentrated on the Hall sensor 223. In this way, when the charging box 20 is closed, the upper housing magnet can have a small volume while ensuring that the upper housing magnet can change the output state of the Hall sensor 223, and the volume of the charging box 20 can be further reduced. Preferably, when the upper housing assembly 24 is in a closed state, the distance between the mutually adjacent surfaces of the magnetic permeable member 261 and the upper housing magnet can be set to 5 mm or less. In this way, a certain gap can be provided between the upper housing magnet and the magnetically permeable member, so that the side walls of the upper housing assembly and the side walls of the lower housing assembly (i.e., the above-mentioned upper housing lining 242 and the lower housing lining 214) can cover the upper housing magnet and the magnetically permeable member 261 at a distance, and the two do not need to be exposed between the upper housing assembly 24 and the lower housing assembly 21, and there is no need to form additional holes in the upper housing lining 242 and the lower housing lining 214, which is advantageous for improving the structural strength of the charging box 20 and can make the charging box 20 more beautiful. In another embodiment, when the upper housing assembly 24 is in the closed state, one end of the magnetically permeable member 261 away from the Hall sensor 223 is directly abutted against the bottom surface of the upper housing magnet, thereby increasing the magnetization of the upper housing magnet with respect to the magnetically permeable member 261, and the magnetic field of the upper housing magnet can be concentrated more on the Hall sensor 223.

[0229] In the thickness direction of the charging box 20, the lower housing assembly 21 is provided with a contoured groove 211 for accommodating the earphone 10, and the orthogonal projection of the contoured groove 211 onto the main control circuit board 221 is offset from the orthogonal projection of the Hall sensor 223 and the upper housing magnet onto the main control circuit board 221. In this way, the Hall sensor 223 can be provided outside the contoured groove 211, and the Hall sensor 223 can be closer to the upper housing magnet, which is favorable for the upper housing magnet to change the output state of the Hall sensor 223.

[0230] Preferably, an auxiliary magnet is further installed in the lower housing assembly 21, which may be, for example, a magnet that assists the magnetic attraction engagement between the upper housing assembly 24 and the lower housing assembly 21, or a magnet that assists the engagement between the earphone 10 and the contoured groove 211, etc. The auxiliary magnet is installed so that when the upper housing assembly 24 is in an open state, the Hall sensor 223 is in a first state, and when the upper housing assembly 24 is in a closed state, the Hall sensor 223 is in a second state. In other words, the auxiliary magnet does not have a different effect on the output state of the Hall sensor 223 than the magnetic attraction structure.

[0231] The above are merely some examples of the present application, and do not limit the scope of protection of the present application. Any equivalent device or equivalent process conversion based on the contents of the specification and drawings of the present application, or direct or indirect application to other related technical fields, are all similarly included in the patent protection scope of the present application. [Explanation of symbols]

[0232] 10. Earphones 11 Core Modules 12 Hook-like structure 13 Main control circuit board 15 Electronic Components 16 Flexible circuit board 17 Support Assembly CE connection end FE free end 111 Core Housing 112 Speakers 111a Sound emission hole 111c Decompression hole 111d articulation hole 115 Bracket 116 Acoustic Cavity 121 Elastic Wire 122 Adapter housing 123 Battery Housing 124 Storage Cavity 1231 Lid Case 1232 Battery Magazine 1131 Flexible Mating Block 1132 Flexible coating layer 1141 Antenna Pattern 1142 Touch Pattern 151 Electrode terminal 171 Bottom plate 172 First side panel 173 Second side panel 174 Third side panel 231 First magnetic attraction structure 232 Second magnetic attraction structure 21 Lower Housing Assembly 213 Lower housing body 214 Lower housing lining 24 Upper housing assembly 241 Upper housing body 242 Upper housing lining 245 Restriction member 251 Lower fixed seat 252 Upper fixed seat 253 Rotation axis 254 Reinforcement members 255 Elastic Members 271 First position limiting member 272 Second position limiting member

Claims

1. A charging box for earphones, The earphone includes a core module and a hook-like structure connected to the core module, 1. The charging box for earphones, comprising: a lower housing assembly, the lower housing assembly having a profiling groove for accommodating the earphone, the profiling groove including a first profiling groove area corresponding to the core module and a second profiling groove area corresponding to the hook-shaped structure, projections of the first profiling groove area and the second profiling groove area in a first reference direction overlap, and projections of the first profiling groove area and the second profiling groove area in a second reference direction perpendicular to the first reference direction overlap.

2. 2. The charging box according to claim 1, characterized in that a projection of a first portion of the second contour groove area and the first contour groove area in a first reference direction overlaps, and a projection of a second portion of the second contour groove area and the first contour groove area in a second reference direction overlaps.

3. 3. The charging box of claim 2, wherein in the first reference direction, a first portion of the second contoured groove area is located on a side of the first contoured groove area away from an edge of the lower housing assembly adjacent to the first contoured groove area.

4. 3. The charging box of claim 2, wherein in the second reference direction, a second portion of the second contoured groove area is located on a side of the first contoured groove area away from an edge of the lower housing assembly adjacent to the first contoured groove area.

5. 2. The charging box according to claim 1, wherein the lower housing assembly includes two profiling grooves, the two profiling grooves respectively accommodate two earphones to be worn on a left ear and a right ear of a user, and the core modules of the two earphones are spaced apart along a second reference direction.

6. 2. The charging box according to claim 1, characterized in that the lower housing assembly includes two of the profiling grooves, and the second profiling groove areas of the two profiling grooves are disposed crosswise to each other, so that when the two profiling grooves respectively accommodate the earphones, the hook-like structures of the two earphones overlap each other.

7. 7. The charging box according to claim 6, wherein the hook-shaped structure includes a battery housing and an elastic portion connecting the battery housing and the core module, and the two second contoured groove areas are installed such that the elastic portions of the earphones overlap each other when the two earphones are accommodated in the second contoured groove areas.

8. The charging box according to claim 7, characterized in that the elastic part is arranged in an arc shape, and when the elastic parts of the two earphones overlap each other, they form two overlapping points.

9. 9. The charging box of claim 8, wherein the two profiling grooves are mirror symmetric with respect to a line connecting the two overlapping points as an axis of symmetry, and the direction of the line connecting the two overlapping points is parallel to the first reference direction or the second reference direction.

10. The charging box according to claim 8, characterized in that the two second contoured groove regions are surrounded by the hook-shaped structure, and the regions located between the two overlapping points are integrally integrated with each other.

11. 9. The charging box according to claim 8, wherein the two second contoured groove regions are surrounded by the hook-shaped structures, and an island is formed in the region located between the two overlapping points.

Images