Charging box of earphone

Abstract

The invention mainly relates to a charging box of an earphone, the earphone comprises a movement module and a hook-shaped structure connected with the movement module, the charging box comprises a lower shell assembly, and the lower shell assembly is provided with a profiling groove for accommodating the earphone; the lower shell assembly is provided with a first electrode terminal exposed out of the profiling groove, and the extension direction of the first electrode terminal is inclined relative to the thickness direction of the charging box. In this way, the success rate of connection of the electrode terminals can be increased.

Description

Charging box for earphones Technical Field

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

[0002] With the increasing popularity of electronic devices, electronic devices have become an indispensable social and entertainment tool in people's daily lives, and people's requirements for electronic devices are getting higher and higher. Electronic devices such as headphones have also been widely used in people's daily lives. They can be used in conjunction with terminal devices such as mobile phones and computers to provide users with an auditory feast. Among them, according to the working principle of headphones, they can generally be divided into air conduction headphones and bone conduction headphones; according to the way users wear headphones, they can generally be divided into headphones, ear-hook headphones and in-ear headphones; according to the way headphones interact with electronic devices, they can generally be divided into wired headphones and wireless headphones. Furthermore, when the battery is low or not in use, the headphones can be placed in a corresponding charging box for easy charging and storage. In related technologies, the success rate of matching the electrode terminals in the charging box with the electrode terminals of the headphones is relatively low.

[0003] Summary of the Invention

[0004] The present application provides a charging box for earphones, the earphones including a movement module and a hook-shaped structure connected to the movement module, the charging box including a lower shell assembly, the lower shell assembly being provided with a contoured groove for accommodating the earphones; the lower shell assembly being provided with a first electrode terminal exposed in the contoured groove, and the extension direction of the first electrode terminal being inclined relative to the thickness direction of the charging box.

[0005] In some embodiments, the angle between the extension direction of the first electrode terminal and the thickness direction of the charging box is between 10 degrees and 45 degrees.

[0006] In some embodiments, the contoured groove includes a first contoured groove area corresponding to the core module and a second contoured groove area corresponding to the hook-shaped structure, and the first electrode terminal is exposed in the second contoured groove area.

[0007] In some embodiments, the hook structure includes an elastic portion and a hard portion connecting the elastic portion and the movement module, and the region of the contoured groove accommodating the movement module and the region accommodating the hard portion are at least partially inclined to each other.

[0008] In some embodiments, the earphone includes a second electrode terminal. When the earphone is accommodated in the contoured groove, the second electrode terminal is connected to the first electrode terminal. The depth of the first contoured groove gradually increases in a direction away from the first electrode terminal.

[0009] In some embodiments, the first electrode terminal is exposed at one end of the second contoured groove region close to the first contoured groove region, and the depth of the region accommodating the hard portion in the second contoured groove region gradually increases in a direction away from the first contoured groove region.

[0010] In some embodiments, a first supporting platform is provided at the bottom of the contoured groove, the first electrode terminal is provided on the first supporting platform, the earphone is provided with a second supporting platform, the second electrode terminal is provided on the second supporting platform, and when the earphone is accommodated in the contoured groove, the second supporting platform abuts against the first supporting platform.

[0011] In some embodiments, the contact surfaces of the first supporting platform and the second supporting platform are planes, and the normal direction of the contact surfaces is inclined relative to the thickness direction of the charging box.

[0012] In some embodiments, an extension direction of the first electrode terminal is parallel to a normal direction of contact surfaces of the first supporting platform and the second supporting platform.

[0013] In some embodiments, the normal direction of the inner side surface of the core module and the extension direction of the second electrode terminal are arranged obliquely to each other.

[0014] The beneficial effects of this application are as follows: by arranging the extension direction of the first electrode terminal to be inclined relative to the thickness direction of the charging case, on the one hand, the space occupied by the first electrode terminal in the thickness direction of the charging case can be reduced, which is conducive to reducing the volume of the charging case. On the other hand, when the earphone is accommodated in the contoured groove, the extension direction of the first electrode terminal can match the extension direction of the second electrode terminal, thereby increasing the success rate of the connection between the first electrode terminal and the second electrode terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] FIG1 is a schematic diagram of the front profile of a user's ear as described in the present application;

[0017] FIG2 is a schematic structural diagram of an embodiment of an earphone provided by the present application;

[0018] FIG3 is a schematic diagram of an embodiment of the earphone provided in the present application in a worn state;

[0019] FIG4 is a schematic structural diagram of an embodiment of an earphone provided by the present application;

[0020] FIG5 is a schematic structural diagram of an embodiment of an earphone provided by the present application;

[0021] FIG6 is a comparison diagram of frequency response curves measured at the same listening position when the movement module is located at different positions on the ear in an embodiment of the earphone provided by the present application;

[0022] FIG7 is a schematic cross-sectional view of the structure of an embodiment of the earphone in FIG2 along the A1-A1 section direction;

[0023] FIG8 is a schematic cross-sectional view of the structure of the earphone embodiment of FIG2 along the A2-A2 section direction;

[0024] FIG9 is a schematic structural diagram of an embodiment of an earphone provided by the present application;

[0025] FIG10 is a schematic structural diagram of an embodiment of a movement housing provided by the present application;

[0026] FIG11 is a schematic structural diagram of an embodiment of a movement housing provided by the present application;

[0027] FIG12 is a schematic structural diagram of an embodiment of a bracket provided in the present application;

[0028] FIG13 is an enlarged structural diagram of the earphone embodiment in area B1 in FIG8 ;

[0029] FIG14 is an enlarged structural diagram of the earphone embodiment in area B2 in FIG8 ;

[0030] FIG15 is a schematic structural diagram of an embodiment of a hook-shaped structure provided by the present application;

[0031] FIG16 is a schematic cross-sectional view of an embodiment of the hook-shaped structure in FIG15 taken along the A3-A3 cutting direction;

[0032] FIG17 is a schematic cross-sectional view of an embodiment of the hook-shaped structure in FIG15 taken along another cross-sectional direction perpendicular to the cross-sectional direction A3-A3;

[0033] FIG18 is a schematic diagram of the exploded structure of an embodiment of the hook structure in FIG15;

[0034] FIG19 is a schematic structural diagram of an embodiment of a charging box provided by the present application;

[0035] FIG20 is a schematic structural diagram of an embodiment of the charging box in FIG19 after placing earphones;

[0036] FIG21 is a schematic structural diagram of an embodiment of a charging box provided by the present application;

[0037] FIG22 is a schematic cross-sectional view of the charging box embodiment in FIG21 taken along the A4-A4 section direction after the cover is closed;

[0038] FIG23 is a schematic structural diagram of an embodiment of the charging box in FIG22 ;

[0039] FIG24 is a schematic cross-sectional view of an embodiment of the charging box in FIG19 along the A5-A5 section direction;

[0040] FIG25 is a schematic structural diagram of the upper shell assembly of the charging box provided in the present application provided with a restricting member;

[0041] FIG26 is a structural schematic diagram of the upper shell assembly in FIG25 provided with a limiting member from another perspective;

[0042] FIG27 is a schematic cross-sectional view of an embodiment of a charging box of the present application in an open state;

[0043] FIG28 is a schematic diagram of the structure of an embodiment of a limiting mechanism in a charging box of the present application;

[0044] FIG29 is a schematic diagram of an unexploded partial structure of the limiting mechanism embodiment in FIG28;

[0045] FIG30 is a schematic diagram of the structure of another embodiment of the limiting mechanism in the charging box of the present application;

[0046] FIG31 is a schematic diagram of an unexploded partial structure of the embodiment of the limiting mechanism in FIG30;

[0047] FIG32 is a schematic cross-sectional view of the position limiting structure in FIG31 along the A6-A6 section direction;

[0048] FIG33 is a schematic cross-sectional view of the charging box embodiment of the present application in a closed state;

[0049] Figure 34 is a schematic diagram of the magnetic field simulation results at the Hall sensor of the charging box embodiment of the present application. DETAILED DESCRIPTION

[0050] The present application will be further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application and do not limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application and not all embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0051] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of this application. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0052] In conjunction with Figure 1 , the user's ear 100 may include physiological parts such as the external auditory canal 101, the cavum concha 102, the cymba concha 103, the triangular fossa 104, the antihelix 105, the scaphoid 106, the helix 107, and the antitragus 108. Among them, although the external auditory canal 101 has a certain depth and extends to the eardrum of the ear, for the sake of ease of description and in conjunction with Figure 1 , this application, unless otherwise specified, specifically refers to the external auditory canal 101 as its entrance away from the eardrum (i.e., the ear canal). Furthermore, physiological parts such as the cavum concha 102, the cymba concha 103, and the triangular fossa 104 have a certain volume and depth; and the cavum concha 102 is directly connected to the external auditory canal 101, which means that the aforementioned ear canal can be simply regarded as being located at the bottom of the cavum concha 102.

[0053] Furthermore, different users may have individual differences, resulting in different shapes, sizes and other dimensional differences in the ears. In order to facilitate description, and to reduce (or even eliminate) individual differences between different users, a simulator containing a head and its (left and right) ears can be made based on ANSI: S3.36, S3.25 and IEC: 60318-7 standards, such as GRAS 45BC KEMAR. Therefore, in this application, descriptions such as "the user wears headphones", "the headphones are in a wearing state" and "in a wearing state" may refer to the headphones of this application being worn on the ears of the aforementioned simulator. Of course, precisely because different users have individual differences, there may be certain differences between the headphones worn by different users and the headphones worn on the ears of the aforementioned simulator, but such differences should be tolerated.

[0054] It should be noted that in fields such as medicine and anatomy, the human body is defined as three fundamental planes: the sagittal plane, the coronal plane, and the horizontal plane, as well as three fundamental axes: the sagittal axis, the coronal axis, and the vertical axis. The sagittal plane is a plane perpendicular to the ground, along the anterior-posterior axis of the body, dividing the body into left and right halves. The coronal plane is a plane perpendicular to the ground, along the lateral-lateral axis of the body, dividing the body into anterior-posterior halves. The horizontal plane is a plane parallel to the ground, along the lateral-lateral axis of the body, dividing the body into upper and lower halves. Accordingly, the sagittal axis is the axis perpendicular to the coronal plane, along the lateral-lateral axis of the body, and perpendicular to the sagittal plane. The vertical axis is the axis perpendicular to the horizontal plane, along the lateral-lateral axis of the body. Furthermore, the "front side of the ear" in this application is a concept relative to the "back side of the ear." The former refers to the side of the ear facing away from the head, while the latter refers to the side of the ear facing toward the head. Both refer to the user's ear. Observing the ear of the simulator along the coronal axis of the human body yields the front outline diagram shown in Figure 1.

[0055] As an example, in conjunction with Figures 2 to 5, the earphone 10 may include a movement module 11 and a hook-shaped structure 12 connected to the movement module 11, the movement module 11 is located on the front side of the ear in the worn state, and at least part of the hook-shaped structure 12 is located on the back side of the ear in the worn state, so that the earphone 10 is hung on the ear in the worn state. The movement module 11 may have a connecting end CE connected to the hook-shaped structure 12 and a free end FE not connected to the hook-shaped structure 12. Furthermore, the movement module 11 may be configured not to block the external auditory canal in the worn state, so that the earphone 10 acts as an "open earphone". Due to individual differences among different users, when the earphone 10 is worn by different users, the movement module 11 may partially block the external auditory canal, but the external auditory canal is still not blocked.

[0056] In order to improve the stability of the earphone 10 when worn, the earphone 10 can adopt any one of the following methods or a combination thereof. First, at least a portion of the hook-like structure 12 is configured as a contoured structure that fits at least one of the back of the ear and the head, so as to increase the contact area between the hook-like structure 12 and the ear and / or the head, thereby increasing the resistance of the earphone 10 to falling off the ear. Second, at least a portion of the hook-like structure 12 is configured as an elastic structure so that it has a certain amount of deformation when worn, so as to increase the positive pressure of the hook-like structure 12 on the ear and / or the head, thereby increasing the resistance of the earphone 10 to falling off the ear. Third, at least a portion of the hook-like structure 12 is configured to rest against the head when worn, so as to form a reaction force that presses the ear, so that the movement module 11 is pressed against the front side of the ear, thereby increasing the resistance of the earphone 10 to falling off the ear. Fourth, the movement module 11 and hook-shaped structure 12 are configured to clamp physiological areas such as the antihelix and cavum concha from both sides of the ear when worn, thereby increasing resistance to the earphone 10 falling off the ear. Fifth, the movement module 11 or the auxiliary structure connected thereto is configured to at least partially extend into physiological areas such as the cavum concha, cymba concha, fossa triangularis, and scaphoid, thereby increasing resistance to the earphone 10 falling off the ear.

[0057] As an example, referring to Figure 3 , when worn, the free end FE of the movement module 11 can extend into the cavum concha. The movement module 11 and the hook-shaped structure 12 can be configured to clamp the cavum concha from both the front and rear sides of the ear region corresponding to the cavum concha, thereby increasing resistance to the earphone 10 falling off the ear and improving the stability of the earphone 10 when worn. For example, the free end FE can be pressed against the cavum concha in the thickness direction X; as another example, the free end FE can abut against the cavum concha in the length direction Y and the width direction Z.

[0058] It should be noted that when worn, the free end FE of the movement module 11 not only extends into the concha, but can also project orthographically onto the antihelix, or onto the left and right sides of the head, in front of the ear on the sagittal axis. In other words, the hook-shaped structure 12 can support the movement module 11 when worn in various locations, such as the concha, the antihelix, or the front of the ear.

[0059] As an example, in combination with Figures 3 and 4, the movement module 11 may have an inner side surface IS facing the ear and an outer side surface OS away from the ear along the thickness direction X in the wearing state, and a connecting surface connecting the inner side surface IS and the outer side surface OS. The thickness direction X can be defined as the direction in which the movement module 11 approaches or moves away from the ear in the wearing state. Furthermore, at least part of the aforementioned connecting surface is located in the concha cavity in the wearing state, and forms a first contact area with the front side of the above-mentioned ear area, and the hook-shaped structure 12 forms a second contact area with the back side of the above-mentioned ear area in the wearing state, and the aforementioned second contact area and the aforementioned first contact area at least partially overlap in the ear thickness direction of the above-mentioned ear area. In this way, not only can the movement module 11 and the hook-shaped structure 12 jointly clamp the ear from the front and back sides of the ear, but the clamping force formed is mainly manifested as compressive stress, which is conducive to improving the stability and comfort of the earphone 10 in the wearing state.

[0060] It should be noted that when worn and viewed along the coronal axis, the movement module 11 can be configured in a circular, elliptical, rounded square, rounded rectangular, or other shape. Specifically, when the movement module 11 is configured in a circular, elliptical, or other shape, the aforementioned connection surface can refer to the curved side surface of the movement module 11; and when the movement module 11 is configured in a rounded square, rounded rectangular, or other shape, the aforementioned connection surface can include the lower side surface LS, upper side surface US, and rear side surface RS mentioned below. Furthermore, the movement module 11 can have a length direction Y and a width direction Z that are perpendicular to the thickness direction X and orthogonal to each other. Specifically, the length direction Y can be defined as the direction in which the movement module 11 approaches or moves away from the back of the user's head when worn, and the width direction Z can be defined as the direction in which the movement module 11 approaches or moves away from the top of the user's head when worn. Therefore, for ease of description, this embodiment uses the example of the movement module 11 being configured in a rounded rectangular shape as an example for illustrative purposes. 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.

[0061] As an example, referring to Figures 2, 3, and 5, when worn and viewed along the coronal axis of the human body, the connection end CE is closer to the top of the head than the free end FE, allowing the free end FE to extend into the concha cavity. Based on this, the angle between the length direction Y and the sagittal axis of the human body can be between 15° and 60°. If the angle is too small, the free end FE may not be able to extend into the concha cavity, and the sound outlet 111a on the movement module 11 may be too far from the external auditory canal. If the angle is too large, the free end FE may also not be able to extend into the concha cavity, and the external auditory canal may be blocked by the movement module 11. In other words, this arrangement allows the free end FE to extend into the concha cavity while maintaining an appropriate distance between the sound outlet 111a on the movement module 11 and the external auditory canal. This allows the user to hear more of the sound waves generated by the movement module 11 without blocking the external auditory canal.

[0062] As an example, in conjunction with Figure 4, the orthographic projection of the hook-shaped structure 12 on a reference plane perpendicular to the length direction Y (such as the XZ plane in Figure 4) partially overlaps with the orthographic projection of the free end FE on the same reference plane. The overlapping area formed by the orthographic projection of the hook-shaped structure 12 on the aforementioned reference plane and the orthographic projection of the free end FE on the same reference plane is located between the inner side surface IS and the outer side surface OS in the thickness direction X. In this way, not only can the movement module 11 and the hook-shaped structure 12 jointly clamp the ear from the front and back sides of the ear, but the clamping force formed is mainly manifested as compressive stress, which is beneficial to improving the stability and comfort of the earphone 10 when worn.

[0063] Furthermore, in conjunction with Figures 2, 4, 5, and 9, the hook-shaped structure 12 may include an elastic wire 121 connected to the movement module 11 and a battery housing 123 connected to the end of the elastic wire 121 away from the movement module 11. A battery 14 coupled to the movement module 11 is disposed within the battery housing 123. The orthographic projection of the battery housing 123 on the aforementioned reference plane partially overlaps with the orthographic projection of the free end FE on the same reference plane. In this way, when the free end FE rests against the cavum concha, the battery housing 123 can support the ear from the back of the ear, which helps improve the stability of the earphone 10 when worn. The battery housing 123 may include a cover 1231 connected to the elastic wire 121 and a battery compartment 1232 connected to the cover 1231. The battery compartment 1232 and the cover 1231 cooperate to form a cavity structure for accommodating the battery 14.

[0064] As an example, in conjunction with Figure 5, the movement module 11 can have an upper side surface US facing away from the external auditory canal along the width direction Z when worn, and a lower side surface LS facing the external auditory canal, as well as a rear side surface RS connecting the upper side surface US and the lower side surface LS. The rear side surface RS is located at the end facing the back of the head in the length direction Y when worn, and is at least partially located in the concha cavity. Among them, the edge of the orthographic projection of the hook-shaped structure 12 on a reference plane perpendicular to the thickness direction X (e.g., the YZ plane in Figure 5) facing the movement module 11 can be divided into a first segment S1 and a second segment S2 with a continuous arc-shaped transition. The dividing point DP between the first segment S1 and the second segment S2 is the position where the aforementioned edge is farthest from the upper side surface US along the width direction Z. Furthermore, the overall curvature of the hook-shaped structure 12 in the first segment S1 is greater than the overall curvature of the hook-shaped structure 12 in the second segment S2. In this way, the free end FE is allowed to extend into the concha cavity, and the hook-shaped structure 12 can cooperate with the movement module 11 to provide a suitable clamping force.

[0065] It should be noted that the overall curvature described above can be used to qualitatively describe the degree of curvature of different segments of the hook-shaped structure 12, where the radius of curvature of each segment can be constant or continuously variable. Therefore, at least one point within the first segment S1 has a smaller curvature radius than any point within the second segment S2. Furthermore, the overall curvature described above can also be quantitatively characterized by an average curvature radius, that is, by first calculating the curvature radius of N points within each segment and then taking the average.

[0066] Furthermore, in the extension direction of the hook structure 12, the length of the second section S2 can be greater than the length of the first section S1, so that the hook structure 12 and the movement module 11 can clamp the ear together, and increase the area of ​​contact between the hook structure 12 and the user's skin, which is conducive to improving the stability of the earphone 10 when worn.

[0067] In some embodiments, the earphone 10 has a first reference line segment RL1 parallel to the width direction Z. The starting point of the first reference line segment RL1 is the point where the first reference line segment RL1 intersects the upper side surface US, and the end point of the first reference line segment RL1 is the demarcation point DP. The second reference line segment RL2, the third reference line segment RL3, and the fourth reference line segment RL4 mentioned below are successively farther and farther away from the starting point of the first reference line segment RL1 in the width direction Z. Furthermore, the length of the first reference line segment RL1 can be between 13 mm and 20 mm. If the length of the first reference line segment RL1 is too short, the free end FE may not be able to extend into the cavum concha, and the sound outlet 111a on the movement module 11 may be too far from the external auditory canal. If the length of the first reference line segment RL1 is too long, the free end FE may also be unable to extend into the cavum concha, and the external auditory canal may be blocked by the movement module 11. In other words, this arrangement allows the free end FE to extend into the concha cavity, while ensuring that the sound outlet 111a on the movement module 11 is at a suitable distance from the external auditory canal, so that the user can hear more sound waves generated by the movement module 11 without blocking the external auditory canal.

[0068] Furthermore, a second reference line segment RL2 passing through 1 / 4 of the first reference line segment RL1 and parallel to the length direction Y intersects the first segment S1 and the second segment S2 at a first intersection point P1 and a second intersection point P2, respectively. The distance between the first intersection point P1 and the starting point of the first reference line segment RL1 may be between 9 mm and 15 mm, and the distance between the second intersection point P2 and the starting point of the first reference line segment RL1 may be between 12 mm and 19 mm. A third reference line segment RL3 passing through 1 / 2 of the first reference line segment RL1 and parallel to the length direction Y intersects the first segment S1 and the second segment S2 at a third intersection point P3 and a fourth intersection point P4, respectively. The third intersection point P1 may be between 9 mm and 15 mm, and the distance between the second intersection point P2 and the starting point of the first reference line segment RL1 may be between 12 mm and 19 mm. The distance between P3 and the starting point of the first reference line segment RL1 can be between 11 mm and 18 mm, and the distance between the fourth intersection point P4 and the starting point of the first reference line segment RL1 can be between 12 mm and 19 mm. The fourth reference line segment RL4, which passes through ¾ of the first reference line segment RL1 and is parallel to the length direction Y, intersects the first segment S1 and the second segment S2 at a fifth intersection point P5 and a sixth intersection point P6, respectively. The distance between the fifth intersection point P5 and the starting point of the first reference line segment RL1 can be between 12 mm and 19 mm, and the distance between the sixth intersection point P6 and the starting point of the first reference line segment RL1 can be between 12 mm and 19 mm. In this way, when the free end FE extends into the concha cavity and the sound outlet 111a on the movement module 11 is at an appropriate distance from the external auditory canal, the hook-shaped structure 12 can better fit the ear.

[0069] In some embodiments, a fifth reference line segment RL5 is defined between the second segment S2 and the rear side surface RS, with the shortest distance along the length direction Y. The length of the fifth reference line segment RL5 can be between 2 mm and 3 mm. If the length of the fifth reference line segment RL5 is too short, the clamping force of the movement module 11 and the hook-shaped structure 12 on the ear can be too strong, causing discomfort when wearing. If the length of the fifth reference line segment RL5 is too long, the clamping force of the movement module 11 and the hook-shaped structure 12 on the ear can be too weak, causing instability when wearing. In other words, this configuration ensures both stability and comfort when wearing the earphone 10.

[0070] Furthermore, the fifth reference line segment RL5 is defined as follows: the point where the fifth reference line segment RL5 intersects the rear side surface RS serves as the starting point of the fifth reference line segment RL5, and the point where the fifth reference line segment RL5 intersects the second segment S2 serves as the endpoint of the fifth reference line segment RL5. The orthographic projection of the intersection of the first reference line segment RL1 and the upper side surface US along the length direction Y intersects the second segment S2 at a seventh intersection point P7. The orthographic projection of the intersection of the extended line of the first reference line segment RL1 and the lower side surface LS along the length direction Y intersects the second segment S2 at an eighth intersection point P8. The distance between the seventh intersection point P7 and the starting point of the fifth reference line segment RL5 can be between 5 mm and 9 mm, and the distance between the eighth intersection point P8 and the starting point of the fifth reference line segment RL5 can be between 5 mm and 9 mm. In this way, the hook structure 12 can better fit the ear while maintaining both stability and comfort when the earphone 10 is worn.

[0071] As an example, in combination with Figures 7, 8 and 5, the movement module 11 may include a movement housing 111 connected to the hook structure 12 and a speaker 112 arranged in the movement housing 111. Among them, the movement housing 111 is provided with a sound outlet 111a on the inner side facing the ear (such as the inner side IS mentioned above) in the wearing state, and the sound waves generated by the speaker 112 are transmitted out through the sound outlet 111a so as to be transmitted into the external auditory canal. It is worth noting that the sound outlet 111a can also be provided on the side of the movement housing 111 corresponding to the lower side LS, and can also be provided at the corner between the aforementioned inner side and the lower side LS. Furthermore, the speaker 112 may include a magnetic circuit system, a voice coil extending into the magnetic circuit system, and a diaphragm connected to the voice coil. The magnetic field generated after the voice coil is energized interacts with the magnetic field formed by the magnetic circuit system, thereby driving the diaphragm to generate mechanical vibrations, and then generating sound through the propagation of a medium such as air.

[0072] Furthermore, with reference to Figures 7 to 9, the earphone 10 may include a main control circuit board 13 disposed within the movement housing 111 and a battery 14 disposed at an end of the hook-shaped structure 12 away from the movement module 11. The battery 14 and the speaker 112 are respectively coupled to the main control circuit board 13 to allow the battery 14 to power the speaker 112 under the control of the main circuit board 13. Of course, the battery 14 and the speaker 112 may also be both disposed within the movement housing 111, with the battery 14 being closer to the connection end CE and the speaker 112 being closer to the free end FE.

[0073] As an example, in conjunction with Figure 3 and Figure 1, since the concha cavity has a certain volume and depth, after the free end FE extends into the concha cavity, there can be a certain distance between the inner side IS of the movement housing 111 and the concha cavity. In other words, when the movement module 11 is in the worn state, it can cooperate with the concha cavity to form an auxiliary cavity that communicates with the external auditory canal, and the sound outlet 111a is at least partially located in the aforementioned auxiliary cavity. In this way, when the earphones are worn, the sound waves generated by the speaker 112 and transmitted through the sound outlet 111a will be restricted by the aforementioned auxiliary cavity, that is, the aforementioned auxiliary cavity can gather the sound waves so that more sound waves can be transmitted into the external auditory canal, thereby increasing the volume and sound quality of the sound heard by the user in the near field, which is conducive to improving the acoustic effect of the earphones 10. Furthermore, since the movement module 11 can be configured not to block the external auditory canal when worn, the aforementioned auxiliary cavity can be configured in a semi-open state. In this way, the sound waves generated by the speaker 112 and propagated through the sound outlet 111a, in addition to most of them being propagated to the external auditory canal, a small part is propagated to the outside of the earphone 10 and the ear through the gap between the movement module 11 and the ear (for example, the part of the concha cavity not covered by the movement module 11), thereby forming a first sound leakage in the far field; at the same time, the movement module 11 generally has an acoustic hole (for example, the pressure relief hole 111c mentioned later), and the sound waves propagated through the aforementioned acoustic hole generally form a second sound leakage in the far field, and the phase of the aforementioned first sound leakage and the phase of the aforementioned second sound leakage are (close to) opposite to each other, so that the two can cancel each other out of phase in the far field, which is beneficial to reduce the sound leakage of the earphone 10 in the far field.

[0074] Furthermore, the earphone 10 may include an adjustment mechanism connecting the movement module 11 and the hook structure 12. Different users can use the adjustment mechanism to adjust the relative position of the movement module 11 on the ear to ensure that the movement module 11 is located in a suitable position, thereby forming the auxiliary cavity described above with the movement module 11 and the cavum concha. Furthermore, the presence of the adjustment mechanism allows users to adjust the earphone 10 to a more stable and comfortable wearing position.

[0075] As an example, in conjunction with Figure 6, the earphone 10 is first worn on the above-mentioned simulator, and then the position of the movement module 11 on the ear of the above-mentioned simulator is adjusted, and then the frequency response curve of the earphone 10 is measured by a detector (such as a microphone) arranged in the external auditory canal of the above-mentioned simulator (for example, the position where the eardrum is located, that is, the listening position), thereby simulating the listening effect after the user wears the earphone 10. Among them, the above-mentioned frequency response curve can be used to characterize the changing relationship between the vibration magnitude and the frequency; the horizontal axis of the above-mentioned frequency response curve can represent the frequency, in Hz; the vertical axis of the above-mentioned frequency response curve can represent the vibration magnitude, in dB. In Figure 6, curve 6_1 can represent the frequency response curve when the movement module 11 does not form the above-mentioned auxiliary cavity with the cavum concha in the wearing state, and curve 6_2 can represent the frequency response curve when the movement module 11 cooperates with the cavum concha to form the above-mentioned auxiliary cavity in the wearing state. Based on this, it can be directly and unambiguously concluded from the comparison diagram of the frequency response curves shown in Figure 6 that curve 6_2 is generally located above curve 6_1, that is, compared with the case where the movement module 11 does not form the above-mentioned auxiliary cavity with the cavum concha when worn, the case where the movement module 11 forms the above-mentioned auxiliary cavity with the cavum concha when worn is more conducive to improving the acoustic effect of the earphone 10.

[0076] By way of example, referring to Figures 7, 9, and 11, the movement module 11 may include a flexible insert 1131 disposed outside the movement housing 111. The hardness of the flexible insert 1131 is less than that of the movement housing 111. The movement housing 111 may be made of plastic; the flexible insert 1131 may be made of silicone, rubber, or other materials and may be injection molded into a predetermined area of ​​the movement housing 111. Furthermore, the flexible insert 1131 may at least partially cover the area of ​​the movement housing 111 corresponding to the free end FE, so that the movement module 11 is at least partially abutted against the cavum concha by the flexible insert 1131. In other words, the portion of the movement housing 111 that extends into and contacts the cavum concha may be covered by the flexible insert 1131. In this way, when the movement module 11 is against the concha cavity, for example, when the movement module 11 and the hook structure 12 are arranged to jointly clamp the aforementioned ear area from the front and back sides of the ear area corresponding to the concha cavity of the ear, the flexible insert 1131 acts as a buffer between the movement housing 111 and the ear (for example, the aforementioned ear area) to relieve the pressure of the earphone 10 on the ear, which is conducive to improving the comfort of the earphone 10 when worn.

[0077] By way of example, the flexible insert 1131 can continuously cover at least a portion of the area corresponding to the rear side RS, upper side US, and lower side LS of the core housing 111. For example, the area corresponding to the rear side RS of the core housing 111 is covered by the flexible insert 1131 by more than 90%, and the areas corresponding to the upper side US and lower side LS of the core housing 111 are each covered by the flexible insert 1131 by approximately 30%. This balances the comfort of the earphone 10 when worn and the need to accommodate structural components such as the speaker 112 within the core housing 111.

[0078] In some embodiments, when viewed along the thickness direction X, the flexible insert 1131 may be arranged in a U-shape.

[0079] In some embodiments, the portion of the flexible insert 1131 corresponding to the lower side LS can rest against the antitragus. The thickness of the portion of the flexible insert 1131 corresponding to the rear side RS can be thinner than the thickness of the portions of the flexible insert 1131 corresponding to the upper side US and lower side LS, respectively, to ensure good comfort when the movement module 11 rests against an uneven position within the concha cavity.

[0080] As an example, in conjunction with Figures 7 and 8, the movement housing 111 may include a movement inner shell 1111 and a movement outer shell 1112 that are fastened to each other along the thickness direction X, and the movement inner shell 1111 is closer to the ear than the movement outer shell 1112 when worn. Among them, the parting surface 111b between the movement outer shell 1112 and the movement inner shell 1111 is inclined toward the side of the movement inner shell 1111 in the direction close to the free end FE, so that the flexible insert 1131 can be arranged as much as possible in the area of ​​the movement outer shell 111 corresponding to the free end FE. For example: in conjunction with Figure 11, the flexible inserts 1131 are all arranged in the area of ​​the movement outer shell 111 corresponding to the free end FE, so as to simplify the structure of the movement module 11 and reduce processing costs.

[0081] By way of example, referring to Figures 7, 8, and 11, the movement module 11 may include a flexible coating 1132 having a hardness less than that of the movement housing 111. The movement housing 111 may be made of plastic; the flexible coating 1132 may be made of silicone, rubber, or other materials and may be formed on a predetermined area of ​​the movement housing 111 through injection molding, gluing, or other methods. Furthermore, the flexible coating 1132 may integrally cover at least a portion of the outer surface of the flexible insert 1131 and at least a portion of the outer surface of the movement outer shell 1112 not covered by the flexible insert 1131, thereby enhancing the visual consistency of the movement module 11. Of course, the flexible coating 1132 may further cover the outer surface of the movement inner shell 1111. The hardness of the flexible insert 1131 is less than that of the flexible coating 1132, allowing for sufficient flexibility of the flexible insert 1131. In addition, the flexible cover 1132 can also improve the comfort of the earphone 10 when worn, and has a certain structural strength to protect the flexible insert 1131. Furthermore, the area of ​​the outer surface of the flexible insert 1131 can be between 126mm 2 and 189mm 2 If the aforementioned area is too small, the movement module 11 may be less comfortable to wear. If the aforementioned area is too large, the movement module 11 may be too large, and the area where the flexible insert 1131 does not contact the cavum concha is too large, thus defeating the purpose of providing the flexible insert 1131. Furthermore, the thickness of the flexible covering 1132 is less than the thickness of the movement housing 1112.

[0082] As an example, in combination with Figure 11 and Figure 9, the movement module 11 may include metal functional patterns such as an antenna pattern 1141 and / or a touch pattern 1142 arranged between the movement housing 1112 and the flexible cover 1132. Among them, the antenna pattern 1141 can be formed on the outside of the movement housing 1112 by means of laser direct structuring (LDS); the touch pattern 1142 can be formed on the outside of the movement housing 1112 by means of laser direct structuring technology, or it can be a flexible touch circuit board attached to the outside of the movement housing 1112. Furthermore, the movement housing 1112 is provided with metallized holes connected to the antenna pattern 1141 and the touch pattern 1142 respectively. At this time, since the main control circuit board 13 is disposed within the movement housing 111, for example, the main control circuit board 13 is connected to the movement housing 1112, the main circuit board 13 can contact the inner wall of the corresponding metallized hole through elastic metal parts such as pogo pins, metal springs, etc. For example, the antenna pattern 1141 and the touch pattern 1142 are respectively connected to the pogo pin 131 and pogo pin 132 soldered to the main circuit board 13. Accordingly, the speaker 112 is located on the side of the main circuit board 13 facing away from the movement housing 1112. In this way, compared with the antenna pattern 1141 and the touch pattern 1142 being respectively arranged on the inner side of the movement housing 1112 facing the speaker 112, the antenna pattern 1141 being arranged on the outer side of the movement housing 1112 can increase the distance between it and the main control circuit board 13, that is, increase the antenna clearance area, thereby increasing the anti-interference ability of the antenna pattern 1141; the touch pattern 1142 being arranged on the outer side of the movement housing 1112 can shorten the distance between it and the external signal trigger source (such as the user's finger), that is, reduce the touch distance, thereby increasing the sensitivity of the touch pattern 1142 being triggered by the user.

[0083] In some embodiments, the antenna pattern 1141 may surround the periphery of the touch pattern 1142 to fully utilize the space outside the core housing 1112. The antenna pattern 1141 may be U-shaped, and the touch pattern 1142 may be square.

[0084] Furthermore, the core module 11 may include a microphone 133 welded to the main control circuit board 13. The microphone 133 may pick up user voice and ambient sound through a sound pickup hole provided on the core housing 1112. When the main control circuit board 13 is connected to the core housing 1112, the microphone 133 may be further pressed against the core housing 1112.

[0085] As an example, in conjunction with Figures 10 and 11, the movement inner shell 1111 may include a bottom wall 1113 and a first side wall 1114 connected to the bottom wall 1113, and the movement outer shell 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 are engaged with each other along the parting surface 111b, and the two can support each other. Wherein, when observed along the width direction Z and in the reference direction from the connecting end CE to the free end FE (for example, the opposite direction of the arrow Y in Figures 10 and 11), the portion of the first side wall 1114 close to the free end FE gradually approaches the bottom wall 1113 in the thickness direction X, and the portion of the second side wall 1116 close 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 of the movement inner shell 1111 in the direction close to the free end FE. At this time, the flexible insert 1131 is at least partially arranged on the outside of the second side wall 1116. For example: in combination with Figure 11 and Figure 9, in addition to being arranged on the outside of the second side wall 1116, the flexible insert 1131 is also partially arranged on the outside of the top wall 1115. Correspondingly, the sound outlet 111a can be arranged on the bottom wall 1113. Of course, the sound outlet 111a can also be arranged on the side of the first side wall 1114 corresponding to the lower side surface LS, and can also be arranged at 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 metallized holes can be arranged on the top wall 1115, and the pickup through hole of the microphone 133 can also be arranged on the top wall 1115.

[0086] As an example, in conjunction with Figures 7 and 11 , the movement housing 1112 can be provided with an embedding groove located at least partially on the second sidewall 1116, and the flexible insert 1131 can be embedded in the aforementioned embedding groove, so that the outer surface of the area of ​​the movement housing 1112 not covered by the flexible insert 1131 transitions continuously with the outer surface of the flexible insert 1131. The area where the flexible insert 1131 is located in Figure 7 can be simply regarded as the aforementioned embedding groove. This not only facilitates the accumulation of the flexible insert 1131 on the movement housing 1112 during the injection molding process, preventing the flexible insert 1131 from overflowing, but also helps improve the appearance quality of the movement module 11 and avoids the surface of the movement module 11 from being bumpy.

[0087] Furthermore, the second side wall 1116 may include a first sub-side wall segment 1117 and a second sub-side wall segment 1118 connected to the first sub-side wall segment 1117, wherein the first sub-side wall segment 1117 is closer to the top wall 1115 than the second sub-side wall segment 1118 in the thickness direction X, and the second sub-side wall segment 1118 protrudes toward the outside of the movement housing 111 compared to the first sub-side wall segment 1117. In short, the second side wall 1116 may have a stepped structure. In this way, it is not only beneficial for the flexible insert 1131 to be accumulated on the movement housing 1112 during the injection molding process, thereby preventing the flexible insert 1131 from overflowing, but also beneficial for the movement module 11 to better abut against the concha cavity through the flexible insert 1131, thereby improving the comfort of the earphone 10 when worn.

[0088] Furthermore, the main control circuit board 13 can be connected to the core housing 1112, for example, fixed to a heat-seal post connected to the top wall 1115, and can partially overlap with the first sub-side wall segment 1117 in the thickness direction X. The speaker 112 can partially overlap with the second sub-side wall segment 1118 in the thickness direction X. This facilitates the installation of a sufficiently large speaker 112 in the core housing 111, thereby enhancing the sound volume produced by the earphone 10.

[0089] As an example, in combination with Figures 10 and 8, the movement housing 111 can be provided with a pressure relief hole 111c, which allows the space on the side of the speaker 112 facing the main control circuit board 13 to be connected to the external environment, that is, the air can freely enter and exit the aforementioned space. In this way, it is helpful to reduce the resistance of the diaphragm of the speaker 112 during the vibration process. Among them, the pressure relief hole 111c can be facing the top of the head when worn, which is helpful to avoid the sound waves propagating through the pressure relief hole 111c from leaking sound (that is, the above-mentioned second leakage sound) and being heard. Based on the Helmholtz resonance cavity, the aperture of the pressure relief hole 111c can be as large as possible, so that the resonant frequency of the second leakage sound is shifted to a higher frequency band (for example, a frequency range greater than 4kHz) as much as possible, which is helpful to further avoid the second leakage sound from being heard.

[0090] Furthermore, the movement housing 111 may be provided with a sound-tuning hole 111d, which allows the resonant frequency of the second sound leakage to shift as much as possible to a higher frequency band (e.g., a frequency range greater than 4kHz), which helps to further prevent the second sound leakage from being heard. The area of ​​the sound-tuning hole 111d may be smaller than the area of ​​the pressure relief hole 111c, so that the space on the side of the speaker 112 facing the main control circuit board 13 is more connected to the external environment through the pressure relief hole 111c. Furthermore, the spacing between the sound outlet hole 111a and the pressure relief hole 111c in the width direction Z is greater than the spacing between the sound outlet hole 111a and the sound-tuning hole 111d in the width direction Z, so as to avoid the sound waves propagating through the sound outlet hole 111a and the pressure relief hole 111c respectively from canceling each other out in the near field, which helps to increase the volume of the sound propagated through the sound outlet hole 111a heard by the user. Accordingly, the sound tuning hole 111d is closer to the connection end CE than the sound outlet hole 111a, so as to increase the distance between the two in the length direction Y, thereby avoiding the sound waves propagating through the sound outlet hole 111a and the sound tuning hole 111d respectively from canceling each other out of phase in the near field, which is beneficial to increasing the volume of the sound propagated through the sound outlet hole 111a heard by the user.

[0091] As an example, with reference to FIG10 , the sound outlet 111a, pressure relief hole 111c, and sound adjustment hole 111d can be provided on the movement inner shell 1111. For example, the sound outlet 111a is provided on the bottom wall 1113, while the pressure relief hole 111c and the sound adjustment hole 111d are respectively provided on the first side wall 1114. The pressure relief hole 111c and the sound adjustment hole 111d can be respectively provided on opposite sides of the first side wall 1114 along the width direction Z. Thus, since the sound outlet 111a, pressure relief hole 111c, and sound adjustment hole 111d are all provided on the movement inner shell 1111, the structure of the movement outer shell 1112 is simplified, which helps reduce processing costs. In addition, since the pressure relief hole 111c and the sound adjustment hole 111d are respectively arranged on opposite sides of the first side wall 1114 along the width direction Z, the above-mentioned parting surface 111b can be symmetrically arranged about a reference plane perpendicular to the width direction Z, which is beneficial to improving the appearance quality of the movement module 11.

[0092] As an example, in combination with Figures 7 and 8, the movement module 11 may include a bracket 115 arranged in the movement shell 111, and the bracket 115 and the speaker 112 may be arranged to form an acoustic cavity 116, so that the acoustic cavity 116 is separated from other structures in the movement shell 111 (such as the main control circuit board 13, etc.), which is conducive to improving the acoustic performance of the movement module 11. Among them, the movement shell 111 is provided with an acoustic hole, for example, the acoustic hole is at least one of the pressure relief hole 111c and the sound adjustment hole 111d, and the bracket 115 is provided with an acoustic channel 1151 connecting the acoustic hole and the acoustic cavity 116, so that the acoustic cavity 116 is connected to the external environment, that is, air can freely enter and exit the acoustic cavity 116, which is conducive to reducing the resistance of the diaphragm of the speaker 112 during the vibration process.

[0093] Furthermore, the bracket 115 cooperates with the movement housing 111 to form a first glue-containing groove 1171 surrounding at least a portion of the acoustic hole. The first glue-containing groove 1171 contains a first glue for sealing the assembly gap between the bracket 115 and the movement housing 111. That is, the first glue is used to provide a waterproof seal, which helps prevent external droplets such as sweat and rain from invading the space within the movement housing 111 where the main control circuit board 13 is located. Thus, based on the Helmholtz resonance cavity, compared to the related art method of pressing a silicone sleeve against the movement housing 111 through the bracket 115 for waterproof sealing, the present technical solution uses the first glue to provide a waterproof seal, which can omit the aforementioned silicone sleeve in the related art. This helps shorten the length of the portion of the acoustic cavity 116 that communicates with the external environment (including the acoustic channel 1151 and the acoustic hole), so that the resonant frequency of the leaked sound (i.e., the second leaked sound) generated by propagating through the pressure relief hole 111c is shifted as much as possible to a higher frequency band (e.g., a frequency range greater than 4 kHz), thereby further preventing the second leaked sound from being heard.

[0094] It should be noted that: when the above-mentioned acoustic hole is a pressure relief hole 111c, the first adhesive groove 1171 surrounds at least a portion of the pressure relief hole 111c; when the above-mentioned acoustic hole is a sound tuning hole 111d, the first adhesive groove 1171 surrounds at least a portion of the sound tuning hole 111d; when the above-mentioned acoustic holes are the pressure relief hole 111c and the sound tuning hole 111d, the first adhesive groove 1171 surrounds at least a portion of the pressure relief hole 111c and the sound tuning hole 111d respectively. For the sake of convenience of description, and in combination with Figures 8, 10 and 12, this application takes the above-mentioned acoustic holes as the pressure relief hole 111c and the sound tuning hole 111d, and the first adhesive groove 1171 surrounds at least a portion of the pressure relief hole 111c and the sound tuning hole 111d as an example for exemplary description. Furthermore, if the gap between the bracket 115 and the movement shell 111 (for example, its bottom wall 1113) is large enough, or the bottom wall 1113 and the first side wall 1114 in the movement shell 111 are not one-piece molded structural parts (that is, two separate structural parts), then the first glue groove 1171 can surround the entire above-mentioned acoustic hole, that is, the first glue groove 1171 is a complete annular structure.

[0095] As an example, in conjunction with Figures 12 and 10 , the bracket 115 may include an annular main portion 1152 and a docking portion 1153 connected to the annular main portion 1152. The annular main portion 1152 is sleeved around the periphery of the speaker 112 to form the acoustic cavity 116, and the acoustic channel 1151 extends through the docking portion 1153 and the annular main portion 1152. Furthermore, the docking portion 1153 is located between the annular main portion 1152 and the core housing 111 and surrounds at least a portion of the acoustic hole. The docking portion 1153 cooperates with the core housing 111 to form a first adhesive groove 1171. Since the acoustic hole can be a pressure relief hole 111c and a sound adjustment hole 111d, two docking portions 1153 are provided, and two first adhesive grooves 1171 are also provided. Accordingly, the docking portion 1153 cooperates with the first sidewall 1114 to form the first adhesive groove 1171. In this way, since the bracket 115 is arranged in a ring shape, the speaker 112 is exposed toward the side of the main control circuit board 13, which is conducive to reducing the thickness of the movement module 11 in the thickness direction X.

[0096] As an example, in conjunction with Figures 10 and 8, a recessed area 1119 may be provided on the inner side of the movement housing 111, the acoustic hole may be provided at the bottom of the recessed area 1119, and the movement module 11 may include an acoustic resistance mesh 118 provided in the recessed area 1119, with the docking portion 1153 pressing the acoustic resistance mesh 118 against the bottom of the recessed area 1119. This not only helps prevent the bracket 115 from scraping the acoustic resistance mesh 118 during assembly, but also helps reduce the assembly gap between the bracket 115, the acoustic resistance mesh 118, and the movement inner housing 1111, and prevents the acoustic resistance mesh 118 from shaking. The acoustic resistance mesh 118 may be pre-fixed to the bottom of the recessed area 1119 using double-sided tape or glue; the acoustic resistance mesh 118 may also be pre-fixed to a protective steel mesh, which is then pre-fixed to the bottom of the recessed area 1119 using double-sided tape or glue. Correspondingly, since the above-mentioned acoustic holes can be the pressure relief hole 111c and the sound adjustment hole 111d, two recessed areas 1119 are correspondingly provided, and two acoustic resistance nets 118 are also correspondingly provided.

[0097] Furthermore, the above-mentioned first glue can be further used to seal the assembly gap between the bracket 115 and the acoustic resistance net 118 and / or the assembly gap between the acoustic resistance net 118 and the movement shell 111 (such as the side wall of the recessed area 1119), which is conducive to further waterproof sealing.

[0098] As an example, in combination with Figures 8, 10 and 12, the docking portion 1153 can be used to form the bottom wall and one side wall of the first glue containing groove 1171, and the movement housing 111 can be used to form the other side wall of the first glue containing groove 1171. The groove wall on the movement housing 111 and the groove wall on the docking portion 1153 are arranged opposite to each other, so that the first glue containing groove 1171 has a certain width and depth. Of course, the docking portion 1153 can be used to form one side wall of the first glue containing groove 1171, and the movement housing 111 can be used to form the bottom wall and the other side wall of the first glue containing groove 1171; or, the docking portion 1153 can be used to form one side wall and a portion of the bottom wall of the first glue containing groove 1171, and the movement housing 111 can be used to form the other side wall and another portion of the bottom wall of the first glue containing groove 1171.

[0099] By way of example, with reference to Figures 12 to 14 , the speaker 112 may include a body 1121 and an annular support 1122 disposed along the circumference of the body 1121. The lower end of the bracket 115 may be supported on the annular support 1122. The acoustic channel 1151 may be open on the side facing the annular support 1122, with the annular support 1122 further blocking the open portion of the acoustic channel 1151. In this case, the first glue-containing groove 1171 may be simply considered to surround a portion of the acoustic hole, facilitating subsequent filling of the first glue-containing groove 1171 with glue, such as by a dispensing process.

[0100] In some embodiments, the annular platform 1122 may include a first annular table 1123 and a second annular table 1124 arranged in a stepped manner, and the second annular table 1124 is arranged around the periphery of the first annular table 1123; a portion of the lower end of the bracket 115 can be supported on the first annular table 1123, and another portion of the lower end of the bracket 115 can form a spacing area with the second annular table 1124, so that the bracket 115, the annular platform 1122 and the movement shell 111 cooperate to form a second glue groove 1172, and the second glue groove 1172 contains a second glue for sealing the assembly gap between any two of the bracket 115, the annular platform 1122 and the movement shell 111 to perform corresponding waterproof sealing.

[0101] In some embodiments, the upper end of the bracket 115 can be placed on the main body 1121 and cooperate with the main body 1121 to form a third glue groove 1173. The third glue groove 1173 contains a third glue for sealing the assembly gap between the bracket 115 and the main body 1121 to perform corresponding waterproof sealing.

[0102] It should be noted that: in the specific assembly process of the movement module 11, the following process steps can be included, and the order of all process steps can be adjusted as needed: 1) pre-fix the sound resistance net 118 to the bottom of the recessed area 1119 by double-sided tape; 2) fix the speaker 112 on the bottom wall 1113, and glue the assembly gap between the two, and the corresponding glue portion is accumulated on the second annular table 1124 of the speaker 112; 3) before the glue in step 2) is cured, fix the bracket 115 on the speaker 112, wherein the lower end of the bracket 115 supports On the first annular table 1123 of the speaker 112, the space between the lower end of the bracket 115 and the second annular table 1124 is also filled with glue, and the docking portion 1153 of the bracket 115 presses the acoustic resistance net 118 and cooperates with the first side wall 1114 to form a first glue groove 1171. The upper end of the bracket 115 is placed on the main body 1121 and cooperates with the main body 1121 to form a third glue groove 1173; 4) Glue is dispensed on the first glue groove 1171, the third glue groove 1173 and the assembly gap between the lower end of the bracket 115 and the speaker 112 and the inner shell 1111 of the movement. Among them, since the assembly gap between the lower end of the bracket 115 and the speaker 112 and the inner shell 1111 of the movement is very close to the first glue groove 1171, the assembly gap between the lower end of the bracket 115 and the speaker 112 and the inner shell 1111 of the movement can be simply regarded as a continuation of the first glue groove 1171, that is, the first glue groove 1171 and the second glue groove 1172 can be connected.

[0103] As an example, in conjunction with Figures 15 to 18 and Figure 7, the hook-shaped structure 12 may include an adapter housing 122 connected to the movement module 11. The adapter housing 122 may be pre-formed with a receiving cavity 124, and the earphone 10 may include an electronic component 15 that is subsequently installed in the receiving cavity 124. The connection between the adapter housing 122 and the movement module 11 may be one or a combination of assembly methods such as snap-on, welding, glue connection, threaded connection, and screw connection. Thus, compared to the related art in which the electronic component 15 is disposed within the movement module 11, the present technical solution, by installing the electronic component 15 within the preset receiving cavity 124 of the hook-shaped structure 12, not only helps save space in the movement module 11, making it more compact and lightweight in structure, but also helps simplify the structure of the movement module 11, making it more efficient to assemble, and also helps rationally arrange the relative positions of the various structural components in the earphone 10, so that both the movement module 11 and the hook-shaped structure 12 can be fully utilized.

[0104] It should be noted that: the adapter shell 122 is pre-formed with a accommodating cavity 124, which may mean that the accommodating cavity 124 is formed at the same time when the adapter shell 122 is molded, rather than being formed by processing after the adapter shell 122 is molded. For example: the adapter shell 122 is a plastic shell, and the corresponding accommodating cavity 124 can be obtained after the plastic shell is injection molded by setting a corresponding core. Correspondingly, the subsequent installation of the electronic component 15 in the accommodating cavity 124 may mean that the electronic component 15 and the adapter shell 122 are not integrally molded structural parts. For example: the adapter shell 122 is a plastic shell, and the electronic component 15 is not integrally injection molded in the plastic shell by means of an insert. Based on this, the description of the adapter shell 122 pre-formed with a through hole 1251, a blind hole 1252 and a through hole 1253 mentioned later is the same or similar to this, and will not be repeated here. Of course, the accommodating cavity 124 can also be obtained by means of a drilling process after the adapter shell 122 is formed. The through hole 1251 , the blind hole 1252 and the through hole 1253 can also be obtained by means of a drilling process after the adapter shell 122 is formed.

[0105] As an example, in conjunction with Figure 7, the electronic component 15 can be coupled to the main control circuit board 13 to achieve an electrical connection between the hook structure 12 and the movement module 11, and the adapter housing 122 can be plugged and fixed with the movement housing 111 to achieve a structural connection between the hook structure 12 and the movement module 11, which is simple and reliable. Among them, the aforementioned plug-in fixation can refer to one of the adapter housing 122 and the movement housing 111 first partially extending into the other along the assembly direction and then plugged and fixed with the help of other limiting structures such as pins, and the assembly direction of the aforementioned limiting structure is not parallel to the aforementioned assembly direction; the aforementioned plug-in fixation can also refer to one of the adapter housing 122 and the movement housing 111 partially extending into the other, so that they can be plugged and fixed without the help of the aforementioned limiting structure.

[0106] As an example, in conjunction with Figures 7, 10, and 16, the adapter housing 122 can be provided with a first snap-fit ​​structure 1221, and the core housing 111 can be provided with a second snap-fit ​​structure 1222. The first snap-fit ​​structure 1221 extends into the core housing 111 and engages with the second snap-fit ​​structure 1222, thereby enabling the adapter housing 122 to be snap-fitted and fixed to the core housing 111. The two are directly plugged in and fixed without the need for other limiting structures, which is simple and reliable. Among them, the first snap-fit ​​structure 1221 can be integrally provided on the adapter housing 122, and two can be relatively spaced apart in the thickness direction X; the second snap-fit ​​structure 1222 can be integrally provided on the core inner shell 1111, and be provided in a one-to-one correspondence with the first snap-fit ​​structure 1221.

[0107] As an example, in conjunction with FIG7 , the earphone 10 may include a flexible circuit board 16. The flexible circuit board 16 may be at least partially disposed within the accommodating cavity 124 to connect with the electronic component 15 and extend into the movement housing 111, thereby connecting the electronic component 15 to the main control circuit board 13 via the flexible circuit board 16. For example, the electronic component 15 is soldered to one end of the flexible circuit board 16 using surface mount technology (SMT), and the other end of the flexible circuit board 16 is fastened to the main control circuit board 13 using a BTB connector. The speaker 112 may be configured to connect to the flexible circuit board 16 along the extension path of the flexible circuit board 16. For example, the leads of the speaker 112 are soldered to corresponding areas of the flexible circuit board 16, thereby connecting the speaker 112 to the main control circuit board 13 via the flexible circuit board 16. This eliminates the need for the leads of the speaker 112 to extend to connect to the main circuit board 13. This helps simplify the wiring structure of the earphone 10 and reduces production costs.

[0108] As an example, in combination with Figure 16 and Figure 15, the adapter shell 122 can be pre-formed with a through hole 1251 that is connected to the accommodating cavity 124. The electronic component 15 may include an electrode terminal 151 that is at least partially arranged in the through hole 1251. The electrode terminal 151 can be a retractable elastic component such as a pogo-PIN, or a non-retractable rigid component such as a metal column. Among them, the aperture of the through hole 1251 can be larger than the outer diameter of the electrode terminal 151 to facilitate the subsequent installation of the electrode terminal 151. Of course, the electrode terminal 151 can also be integrally formed with the adapter shell 122 in the form of an insert. Furthermore, the electrode terminal 151 can be oriented towards the ear in the worn state, so that it is not visible in the worn state, which is conducive to improving the appearance quality of the earphone 10 in the worn state.

[0109] It should be noted that: when the electrode terminal 151 is set as a retractable elastic component such as a pogo-PIN, the extension direction of the electrode terminal 151 can be its retractable direction; and when the electrode terminal 151 is set as a non-retractable rigid component such as a metal column, the extension direction of the electrode terminal 151 can be the direction of its axis.

[0110] Furthermore, multiple electrode terminals 151 can be provided according to actual usage requirements, such as for charging, detection, etc.

[0111] 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. The positive charging terminal 1511 and the negative charging terminal 1512 may be disposed within their respective through-holes 1251, respectively, to facilitate charging of the earphone 10 via the electrode terminal 151. Alternatively, only one of the positive charging terminal 1511 and the negative charging terminal 1512 may be disposed on the adapter housing 122, while the other may be disposed on another housing in the hook-shaped structure 12, such as the battery housing 123, or on the core inner housing 1111.

[0112] In some embodiments, the electrode terminal 151 may include a detection terminal 1513 spaced apart from the positive charging terminal 1511 and the negative charging terminal 1512. The detection terminal 1513 may be used to perform charging detection, detect whether the earphone 10 is placed in or removed from the charging box, and other detection functions. Of course, the detection terminal 1513 may also be replaced by an electronic component such as a Hall sensor.

[0113] In some embodiments, when viewed along the extension direction of the electrode terminal 151 , the connecting lines between the positive charging terminal 1511 , the negative charging terminal 1512 , and the detection terminal 1513 may form a triangle, such as an equilateral triangle.

[0114] In some embodiments, when viewed along the extension direction of the electrode terminal 151, the positive charging terminal 1511, the negative charging terminal 1512, and the detection terminal 1513 can be arranged in a line segment, for example, arranged in a straight line segment, spaced apart from each other. The spacing between the positive charging terminal 1511 and the negative charging terminal 1512 can be greater than the spacing between the negative charging terminal 1512 and the detection terminal 1513. For example, the negative charging terminal 1512 can be located between the positive charging terminal 1511 and the detection terminal 1513, and the spacing between the positive charging terminal 1511 and the negative charging terminal 1512 can be greater than the spacing between the negative charging terminal 1512 and the detection terminal 1513. Another example is when the detection terminal 1513 is located between the positive charging terminal 1511 and the negative charging terminal 1512. In this way, when there is limited space for the electrode terminal 151 on the adapter housing 122, the spacing between the positive charging terminal 1511 and the negative charging terminal 1512 can be maximized, which helps prevent short circuits between the two terminals.

[0115] As an example, referring to FIG15 , a boss 126 can be provided on the outside of the adapter housing 122, and a through hole 1251 further extends through the boss 126, so that multiple electrode terminals 151 are exposed at the bosses 126. In this way, the bosses 126 smooth out the uneven areas of the adapter housing 122 due to the curvature, facilitating the placement of the electrode terminals 151. Specifically, a positive charging terminal 1511, a negative charging terminal 1512, and a detection terminal 1513 can be sequentially spaced along the length of the boss 126.

[0116] As an example, in conjunction with Figures 15 to 17, the hook-shaped structure 12 can include a magnet 127. The magnet 127 and the electrode terminal 151 can be exposed on the same side of the adapter housing 122, that is, both can be visible on the same side surface of the adapter housing 122. This allows the magnet 127 to be closer to the outside world, which is the direction of the exposed end of the electrode terminal 151. This shortens the distance between the magnet 127 and the magnetic attraction structure in a charging device such as a charging case, or the distance between the magnet 127 and the Hall effect sensor used to cooperate with the magnet 127. This helps improve the reliability of functions such as charging and detection. The magnet 127 and the electrode terminal 151 can be arranged adjacent to each other, allowing the magnet 127 to cooperate with the magnetic attraction structure in a charging device such as a charging case, so that the electrode terminal 151 cooperates with the electrode terminal in the charging device to facilitate charging. Accordingly, the boss 126 can protrude from the adapter housing 122 around the magnet 127, that is, the magnet 127 can be lower than the boss 126, so that the electrode terminal 151 can contact the electrode terminal in the charging device such as the charging case. Of course, in an embodiment in which the magnet 127 is used in conjunction with a Hall sensor in a charging device such as a charging box for detection, the magnet 127 is arranged adjacent to the electrode terminal 151, and the electrode terminal in the charging device such as the charging box for cooperating with the electrode terminal 151 can also be arranged adjacent to the aforementioned Hall sensor. This is conducive to reducing the area in the charging device such as the charging box for carrying the aforementioned electrode terminal and the aforementioned Hall sensor.

[0117] Furthermore, the hook-shaped structure 12 may include a flexible covering 128, the hardness of which is less than that of the adapter housing 122. The adapter housing 122 may be made of plastic; the flexible covering 128 may be made of silicone, rubber, or other materials and may be formed on the adapter housing 122 through injection molding, gluing, or other methods. Furthermore, the flexible covering 128 may cover the adapter housing 122 and the magnet 127, preventing the magnet 127 from being exposed while the electrode terminal 151 is exposed. This means that the magnet 127 is invisible while the electrode terminal 151 is visible. This ensures the proper use of the electrode terminal 151 while shielding the magnet 127 from wear and tear, preventing it from being exposed and affecting its appearance. Furthermore, the flexible covering 128 improves the comfort of the earphone 10 when worn. The thickness of the flexible covering 128 is less than that of the adapter housing 122.

[0118] As an example, referring to FIG16 , the adapter housing 122 may be pre-formed with a blind hole 1252 that is not connected to the accommodating cavity 124 to enhance the waterproof and dustproof performance of the accommodating cavity 124. The magnet 127 may be disposed at least within the blind hole 1252 and exposed through the open end of the blind hole 1252. This not only helps reduce the thickness of the adapter housing 122 in the area where the magnet 127 is located, but also helps improve the appearance of the earphone 10 in the area where the magnet 127 is located. Of course, the blind hole 1252 may also be configured as a through hole.

[0119] As an example, referring to FIG15 , when viewed along the extension direction of the electrode terminals 151, the multiple electrode terminals 151 can be arranged spaced apart to form a line segment, such as a straight line segment or a broken line segment. The magnet 127 can be located on either side of the line segment, or the magnet 127 can intersect the line segment and be at least partially located between any two adjacent electrode terminals 151. For example, there can be one magnet 127, with the magnet 127 being located entirely on one side of the line segment, or intersecting the line segment and being located entirely between any two adjacent electrode terminals 151. Another example can be two magnets 127, with one magnet 127 being located entirely on one side of the line segment and the other magnet 127 being located entirely on the other side of the line segment. Another example can be one magnet 127, with a portion of the magnet 127 intersecting the line segment and being located between any two adjacent electrode terminals 151, while the remaining portion is located below the electrode terminal 151 along the extension direction.

[0120] As an example, in conjunction with Figure 15, the plurality of electrode terminals 151 may include a charging positive terminal 1511, a charging negative terminal 1512, and a detection terminal 1513 arranged in a straight line segment. Among them, the magnet 127 may be located on one side of the aforementioned straight line segment. Furthermore, when observed along the extension direction of the electrode terminal 151, the center of the magnet 127 has a first distance, a second distance, and a third distance from the center of the charging positive terminal 1511, the charging negative terminal 1512, and the detection terminal 1513, respectively. The third distance is greater than the first distance and the second distance, respectively, to prioritize the reliability of charging. It is worth noting that: in the embodiment where the hook-shaped structure 12 is provided with a flexible covering 128, in order to facilitate the determination of the relative positional relationship between the magnet 127, the charging positive terminal 1511, the charging negative terminal 1512, and the detection terminal 1513, the flexible covering 128 can be removed first.

[0121] As an example, referring to Figures 16 to 18 , the electronic component 15 may include an electrode terminal 151 and a microphone 152. The adapter housing 122 may be pre-formed with a through hole 1251 and a through hole 1253 that communicate with the accommodating cavity 124, respectively. Due to the different functions of the electrode terminal 151 and the microphone 152, the through hole 1251 and the through hole 1253 may be located on different sidewalls of the adapter housing 122. Therefore, the electrode terminal 151 may be at least partially disposed within the through hole 1251, and the microphone 152 may be disposed within the accommodating cavity 124, picking up sounds outside the earphone 10 (e.g., user voice, ambient sound) via the through hole 1253. Thus, by properly arranging the relative positions of the electrode terminal 151 and the microphone 152, the space in the accommodating cavity 124 is fully utilized, making the structure of the earphone 10 more compact and compact. Furthermore, the earphone 10 may include a support assembly 17 at least partially disposed within the accommodating cavity 124. The support assembly 17 can respectively support and secure the electrode terminals 151 and the microphone 152 to the sidewalls corresponding to the through-holes 1251 and 1253. This not only helps prevent the electrode terminals 151 and the microphone 152 from separating from the adapter housing 122, but also helps improve the waterproof and dustproof performance of the electronic component 15, while also maintaining a simple and reliable structure.

[0122] As an example, referring to FIG18 , 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, all in an integrated structure. The electrode terminal 151 is soldered 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 soldered to the third circuit board portion 163 and also 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 correspond to three adjacent sides of the hexagonal structure. The end of the second circuit board portion 162 that is away from the third circuit board portion 163 is connected to the first circuit board portion 161, while the rest of the second circuit board portion 162 is not connected to the first circuit board portion 161. In this way, after the flexible circuit board 16 and the electrode terminals 151 and microphone 152 thereon are assembled in the adapter shell 122, the operator is allowed to first press the end of the second circuit board portion 162 connected to the first circuit board portion 161 so that it is as flush as possible with the first circuit board portion 161 to avoid the support component 17 that is assembled subsequently.

[0123] In some embodiments, the adapter housing 122 may include two housings whose parting surfaces are perpendicular to the extension direction of the electrode terminal 151, and the two housings are buckled together to form the accommodating cavity 124. The support assembly 17 may be integrally formed with one of the housings to respectively support (or press) the electrode terminal 151 and the microphone 152 when the two are buckled together. Alternatively, at least one of the first support member for supporting the electrode terminal 151 and the second support member for supporting the microphone 152 in the support assembly 17 may be independent of the adapter housing 122 to respectively support (or press) the electrode terminal 151 and the microphone 152 when the two housings are buckled together, or the support assembly 17 may be assembled after the two housings are buckled together to respectively support (or press) the electrode terminal 151 and the microphone 152.

[0124] In some embodiments, at least the portion of the adapter housing 122 corresponding to the accommodating cavity 124 is a complete housing structure. Of the first support member for supporting the electrode terminal 151 and the second support member for supporting the microphone 152 in the support assembly 17, at least the first support member can be independent of the adapter housing 122 to facilitate assembly of the electrode terminal 151.

[0125] As an example, referring to FIG18 , the support assembly 17 can be independent of the adapter housing 122 and inserted into the accommodating cavity 124. Thus, since the support assembly 17, electrode terminals 151, and microphone 152 can be independently of the adapter housing 122, they can be assembled in a certain order, which helps avoid unnecessary structural interference and improves assembly efficiency.

[0126] In some embodiments, the first support member for supporting the electrode terminal 151 and the second support member for supporting the microphone 152 in the support assembly 17 can be independent of the adapter housing 122. That is, the first support member and the second support member are independent of each other to respectively support (or press) the electrode terminal 151 and the microphone 152. This allows the first support member and the second support member in the support assembly 17 to be designed differently according to actual needs.

[0127] In some embodiments, the support assembly 17 can be an integrally formed structural member, that is, the first support member for supporting the electrode terminal 151 and the second support member for supporting the microphone 152 in the support assembly 17 are connected to each other, which is not only conducive to simplifying the structure of the support assembly 17, but also helps to avoid the first support member and the second support member being difficult to assemble due to being too small. Among them, the support assembly 17 can be tightly fixed with the cavity wall of the accommodating cavity 124 after being inserted into place, that is, there is a certain damping during the insertion or removal of the support assembly 17, and the structure is simple and reliable. Accordingly, the cavity wall of the accommodating cavity 124 can be provided with guide grooves and limit grooves that cooperate with the support assembly 17. Of course, the support assembly 17 can also be further bonded to the cavity wall of the accommodating cavity 124 by means of a glue dispensing process.

[0128] By way of example, with reference to Figures 17 and 18 , the dimensions of at least a portion of the support assembly 17 and the accommodating cavity 124 in at least one reference direction perpendicular to the insertion direction of the support assembly 17 relative to the accommodating cavity 124 (e.g., the direction indicated by the arrows in Figures 17 and 18 ) can be configured to gradually decrease along the insertion direction, thereby facilitating the support assembly 17 to extend into the space between the electrode terminal 151 and the microphone 152. In other words, the dimensions of at least a portion of the support assembly 17 in at least one reference direction perpendicular to the insertion direction can be configured to gradually decrease along the insertion direction, and the dimensions of at least a portion of the accommodating cavity 124 in the same reference direction can be configured to gradually decrease along the insertion direction, with the trends of these two changes being the same or similar. This facilitates a tight fit and fixation of the support assembly 17 with the wall of the accommodating cavity 124 after insertion.

[0129] By way of example, referring to Figures 16 to 18 , the walls of the accommodating cavity 124 may include a first cavity wall 1241 and a second cavity wall 1242 arranged side by side and 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 provided in the first cavity wall 1241, and the through hole 1253 may be provided 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, in an L-shaped structure. One major surface of the bottom plate 171 may be disposed opposite the first cavity wall 1241 and support the electrode terminal 151; one major surface of the first side plate 172 may be disposed opposite the third cavity wall 1243 and support the microphone 152. In this way, after the electrode terminal 151 and the microphone 152 are assembled in place, the support assembly 17 is inserted into the accommodating cavity 124 along the above-mentioned insertion direction and after being inserted into place, the electrode terminal 151 and the microphone 152 can be supported respectively by the bottom plate 171 and the first side plate 172.

[0130] Furthermore, the orthographic projection of the microphone 152 on the first cavity wall 1241 can cover at least a portion of the electrode terminal 151 , for example, the microphone 152 covers a portion of the positive charging terminal 1511 , which helps to make the structures of each part more compact.

[0131] In some embodiments, the dimensions of at least a portion of the bottom plate 171 and the accommodating cavity 124 in a first reference direction RD1, which is perpendicular to the insertion direction and parallel to one main surface of the bottom plate 171, can be configured to gradually decrease along the insertion direction. That is, one of the front and rear ends of the bottom plate 171 in the insertion direction, or a portion between the front and rear ends, can be configured to maintain the dimensions in the first reference direction RD1 unchanged along the insertion direction. The dimensions of the first side plate 172 and the accommodating cavity 124 in a second reference direction RD2, which is perpendicular to the insertion direction and parallel to one main surface of the first side plate 172, can be configured to remain unchanged along the insertion direction.

[0132] In some embodiments, the dimensions of at least a portion of the first side plate 172 and the accommodating cavity 124 in a second reference direction RD2, which is perpendicular to the insertion direction and parallel to one main surface of the first side plate 172, can be configured to gradually decrease along the insertion direction. That is, one of the front end and rear end of the first side plate 172 in the insertion direction, or a portion between the front end and rear end, can be configured to maintain a constant dimension in the second reference direction RD2 along the insertion direction. The dimensions of the bottom plate 171 and the accommodating cavity 124 in the first reference direction RD1, which is perpendicular to the insertion direction and parallel to one main surface of the bottom plate 171, can be configured to remain constant along the insertion direction.

[0133] In some embodiments, the dimensions of at least a portion of the first side plate 172 and the accommodating cavity 124 in the second reference direction RD2 perpendicular to the above-mentioned insertion direction and parallel to the main surface of one side of the first side plate 172 can be set to gradually decrease along the above-mentioned insertion direction, and the dimensions of at least a portion of the first side plate 172 and the accommodating cavity 124 in the second reference direction RD2 perpendicular to the above-mentioned insertion direction and parallel to the main surface of one side of the first side plate 172 can be set to gradually decrease along the above-mentioned insertion direction.

[0134] It should be noted that for the support assembly 17 , the size 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 size 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 .

[0135] By way of example, in conjunction with Figures 16 to 18 , the support assembly 17 may include a second side plate 173 connected to the bottom plate 171. The second side plate 173 and the first side plate 172 are arranged side by side and spaced apart on the same side of the bottom plate 171. The second side plate 173 abuts the second cavity wall 1242 to provide a supporting force for the bottom plate 171 toward the electrode terminal 151, thereby improving the support effect of the support assembly 17 on the electrode terminal 151. In embodiments where the electrode terminal 151 includes a positive charging terminal 1511 and a negative charging terminal 1512 spaced apart from each other in a direction perpendicular to the insertion direction, the second side plate 173 may be located between the positive charging terminal 1511 and the negative charging terminal 1512 to ensure uniform force across all parts of the electrode terminal 151, thereby further improving the support effect of the support assembly 17 on the electrode terminal 151.

[0136] By way of example, in conjunction with Figures 16 to 18 , the cavity wall of the accommodating cavity 124 may include a fourth cavity wall 1244 connecting the first cavity wall 1241 and the second cavity wall 1242 and opposing the third cavity wall 1243. The first cavity wall 1241 and the second cavity wall 1242 may be generally configured as a planar structure parallel to each other, while the third cavity wall 1243 and the fourth cavity wall 1244 may be generally configured as an outwardly expanding curved surface structure, thereby maximizing the volume of the accommodating cavity 124 when the volume of the adapter housing 122 is limited. Accordingly, the support assembly 17 may include a third side panel 174 connected to the bottom panel 171. The first side panel 172 and the third side panel 174 are respectively located at the two side edges of the bottom panel 171 in a direction perpendicular to the insertion direction, and the second side panel 173 is located between the first side panel 172 and the third side panel 174. The third side plate 174 abuts against the fourth cavity wall 1244 to provide a supporting force for the first side plate 172 toward the microphone 152 , which is beneficial to improving the supporting effect of the supporting assembly 17 on the microphone 152 .

[0137] Furthermore, relative to the bottom plate 171, the height of the second side plate 173 can be greater than the height of the first side plate 172 and the height of the third side plate 174, respectively. This facilitates contact between the second side plate 173 and the second cavity wall 1242, and between the third side plate 174 and the fourth cavity wall 1244. Since the second and third side plates 173 and 174 do not directly contact either the electrode terminal 151 or the microphone 152, they can also serve as guides during insertion of the support assembly 17 into the accommodating cavity 124. Accordingly, since the second side plate 173 is relatively tall, the support assembly 17 can include reinforcing ribs 175 connecting the second side plate 173 and the bottom plate 171. The reinforcing ribs 175 can be disposed on opposite sides of the second side plate 173 facing the first and third side plates 172 and 174.

[0138] As an example, in conjunction with Figures 15 to 17 and Figure 9, the hook-shaped structure 12 may include an elastic metal wire 121, an adapter housing 122, a battery housing 123, and a wire 129. The ends of the elastic metal wire 121 and the wire 129 may be connected to the adapter housing 122 and the battery housing 123, respectively, so that the wire 129 extends along the elastic metal wire 121 and is passed through the adapter housing 122 and the battery housing 123. Of course, the wire 129 may also be passed through the preset wire passage after the elastic metal wire 121 is connected to the adapter housing 122 and the battery housing 123. Among them, the battery 14 can be set in the battery housing 123 and can be connected to the flexible circuit board 16 via the wire 129, and then the battery 14 is also connected to the main control circuit board 13 via the flexible circuit board 16. This helps to simplify the wiring structure of the earphone 10 and reduce production costs. In other words, components in the hook structure 12 such as the electrode terminal 151 , the microphone 152 and the battery 14 can all be connected to the main control circuit board 13 through the flexible circuit board 16 .

[0139] Furthermore, the flexible covering 128 can further cover at least the exposed parts of the elastic metal wire 121 and the wire 129 , as well as at least a part of the battery 123 , so that the wire 129 is exposed, which is beneficial to improving the appearance quality of the earphone 10 .

[0140] It should be noted that the adapter shell 122 can also be used as a part of the structure of the movement shell 111, for example, the adapter shell 122 is integrally formed with the movement inner shell 1111, and another example is that a part of the adapter shell 122 is integrally formed with the movement inner shell 1111 and the remaining part is integrally formed with the movement outer shell 1112. Among them, other parts of the hook-shaped structure 12 except the adapter shell 122, such as the end of the elastic metal wire 121 away from the battery shell 123, and another example is the battery shell 123, are fixedly connected to the movement module 11 with the adapter shell 122 at the adapter shell 122, such as plug-in fixation. Correspondingly, structural components such as the electrode terminal 151, the microphone 152 and the magnet 127 are also adjusted in position accordingly, which will not be repeated here.

[0141] Based on the above-mentioned related description, the present application provides a shell assembly, which may include a plastic shell, a metal functional pattern and a silicone coating. The metal functional pattern is arranged on the outside of the plastic shell, and the silicone coating can be covered on the side of the metal functional pattern facing away from the plastic shell and on the plastic shell not covered by the metal functional pattern by integral injection molding, glue connection, etc. In this way, compared with the metal functional pattern being arranged on the inner side of the plastic shell facing away from the silicone coating, the metal functional pattern is arranged on the outer side of the plastic shell facing the silicone coating, so that it is further away from the interference of other electronic components in the shell assembly, or closer to the signal trigger source outside the shell assembly, thereby increasing the anti-interference and sensitivity of the metal functional pattern. Among them, the structure of the plastic shell can be the same or similar to that of the movement shell 111 or its movement shell 1112, and the structure of the silicone coating can be the same or similar to that of the flexible coating 1132, which will not be repeated here.

[0142] In some embodiments, the metal functional pattern can be configured as an antenna pattern 1141 or a touch pattern 1142. The antenna pattern 1141 is configured on the outside of the plastic housing to increase the distance between it and other electronic components within the plastic housing, thereby increasing the antenna clearance area and improving the anti-interference performance of the antenna pattern 1141. The touch pattern 1142 is configured on the outside of the plastic housing to shorten the distance between it and an external signal trigger source (e.g., a user's finger), thereby reducing the touch distance and increasing the sensitivity of the touch pattern 1142 to being triggered by the user.

[0143] In some embodiments, the metal functional pattern may include an antenna pattern 1141 and a touch pattern 1142. The antenna pattern 1141 may surround the touch pattern 1142 to fully utilize the space outside the plastic housing. The antenna pattern 1141 may be U-shaped, and the touch pattern 1142 may be square.

[0144] In some embodiments, the thickness of the silicone coating can be thinner than that of the plastic housing, so that the silicone coating shields and protects the metal functional pattern while further increasing the anti-interference and sensitivity of the metal functional pattern and reducing the volume of the housing assembly.

[0145] As an example, the housing assembly can serve as a core housing for accommodating the speaker 112. The relative positional relationship between the plastic housing and the plastic coating can be the same or similar to that between the core housing 111 and the flexible coating 1132, and will not be repeated here.

[0146] Furthermore, in addition to being applied to headphones 10, the shell assembly can also be applied to other electronic devices such as smart glasses. Among them, the electronic device may include a movement module provided with a speaker 112, and may also include a main control circuit board 13, and a speaker 112 and a battery 14 respectively coupled to the main control circuit board 13; the shell assembly can be used to accommodate at least one of the electronic components such as the speaker 112, the main control circuit board 13 and the battery 14, and can also be used to support the speaker 112 in the electronic device to be located in the corresponding wearing position. It is worth noting that for electronic devices such as headphones and smart glasses based on the bone conduction principle, the speaker 112 can be adaptively adjusted to a bone conduction speaker. The basic structure of the bone conduction speaker is well known to those skilled in the art and will not be repeated here.

[0147] The present application provides a housing assembly that may include a first housing, an electrode terminal 151, a magnet 127, and a flexible covering 128. The electrode terminal 151 and the magnet 127 are exposed on the same side of the first housing. The flexible covering 128 has a lower hardness than the first housing and covers the first housing and the magnet 127, so that the magnet 127 is not exposed while the electrode terminal 151 is exposed. Thus, compared to a case where the magnet 127 is disposed within the first housing, the present technical solution places the magnet 127 closer to the outside world, toward which the exposed end of the electrode terminal 151 faces. This shortens the distance between the magnet 127 and the magnetic attraction structure in a charging device such as a charging case, or the distance between the magnet 127 and the Hall effect sensor in a charging device such as a charging case. This helps improve the reliability of functions such as charging and detection. Therefore, the housing assembly can be applied to both power-receiving devices such as earphones 10 and smart glasses, and charging devices such as charging cases. In other words, the electronic device can be either a power-receiving device or a charging device. For ease of description, the first housing may be an adapter housing 122.

[0148] 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 disposed within the through hole 1251, and the magnet 127 may be at least partially disposed within the blind hole 1252, exposed through the open end of the blind hole 1252. This not only helps reduce the thickness of the first housing in the area where the magnet 127 is located, but also helps improve the appearance of the first housing in the area where the magnet 127 is located. Of course, the blind hole 1252 may also be provided as a through hole.

[0149] In some embodiments, a boss 126 may be provided on the outside of the first housing. The boss 126 is positioned adjacent to the magnet 127 and protrudes from the first housing surrounding the magnet 127. A through hole 1251 further extends through the boss 126, exposing the plurality of electrode terminals 151 at the bosses 126. This smoothes out any uneven curvature of the first housing, facilitating the placement of the electrode terminals 151. The boss 126 may be configured in an elongated strip shape, resulting in a simple and reliable structure.

[0150] In some embodiments, the housing assembly may include a flexible circuit board 16, and the electrode terminals 151 are connected to the flexible circuit board 16 to simplify the routing of the electrode terminals 151. The first housing may be formed with a receiving cavity 124, and at least a portion of the flexible circuit board 16 may be disposed within the receiving cavity 124. The through holes 1251 communicate with the receiving cavity 124, while the blind holes 1252 do not communicate with the receiving cavity 124, thereby improving the waterproof and dustproof performance of the first housing.

[0151] In some embodiments, the housing assembly may include a second housing, an elastic wire 121, and a wire 129. The ends of the elastic wire 121 and the wire 129 may be connected to the first housing and the second housing, respectively, so that the wire 129 extends along the elastic wire 121 and is inserted into the first housing and the second housing. For ease of description, the second housing may be a battery housing 123. Furthermore, a battery 14 is disposed in the second housing, and the battery 14 is connected to the flexible circuit board 16 via the wire 129, that is, the battery 14 and the electrode terminal 151 are both connected to the flexible circuit board 16 to simplify wiring. Accordingly, the flexible covering 128 further covers at least the elastic wire 121 and the wire 129 so that the wire 129 is exposed.

[0152] In some embodiments, the housing assembly can be used for earphones 10 and can include a third housing for accommodating a speaker 112 , the third housing being plugged and fixed to the first housing. For ease of description, the third housing can be the core housing 111 .

[0153] 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 a receiving cavity 124, and through-holes 1251 and 1253, respectively communicating with the receiving cavity 124. Through-holes 1251 and 1253 are located on different sidewalls of the first housing. The electrode terminal 151 may be at least partially disposed within through-hole 1251, and the microphone 152 may be disposed within the receiving cavity 124 and pick up sound outside the housing assembly via through-hole 1253. Furthermore, the support assembly 17 may be disposed within the receiving cavity 124 and may support and secure the electrode terminal 151 and microphone 152 to the sidewalls corresponding to through-holes 1251 and 1253, respectively. This arrangement not only helps prevent the electrode terminal 151 and microphone 152 from separating from the first housing, but also enhances the waterproof and dustproof properties of the electrode terminal 151 and microphone 152, while maintaining a simple and reliable structure. For the convenience of description, the first shell can be the adapter shell 122 , the core shell 111 , or a shell structure in which the core shell 111 and the adapter shell 122 are integrally formed.

[0154] In some embodiments, the support assembly 17 can be independent of the first shell and inserted into the accommodating cavity 124 .

[0155] In some embodiments, the support assembly 17 may be an integrally formed structural member.

[0156] In some embodiments, the housing assembly can be used for the earphone 10 and can include a third housing for accommodating the speaker 112 , the third housing being plugged and fixed to the first housing. The first housing can be the adapter housing 122 , and the third housing can be the core housing 111 .

[0157] Furthermore, in addition to being applied to headphones 10, the shell assembly can also be applied to other electronic devices such as smart glasses. Among them, the electronic device may include a main control circuit board 13, and a speaker 112 and a battery 14 respectively coupled to the main control circuit board 13; the shell assembly can be used to accommodate at least one of the electronic components such as the speaker 112, the main control circuit board 13 and the battery 14, and can also be used to support the speaker 112 in the electronic device to be located in the corresponding wearing position. It is worth noting that for electronic devices such as headphones and smart glasses based on the bone conduction principle, the speaker 112 can be adaptively adjusted to a bone conduction speaker. The basic structure of the bone conduction speaker is well known to those skilled in the art and will not be repeated here.

[0158] As an example, in conjunction with Figures 19 and 20, the earphones 10 may include a movement module 11 and a hook-shaped structure 12 connected to the movement module 11. The hook-shaped structure 12 may be a structure that is bent or folded into a hook shape, or it may be a rod-shaped structure that is not parallel to the extension direction of the movement module 11. The rod-shaped structure can cooperate with the movement module 11 to play a "hook-like" role, that is, to enable the earphones to be worn on the human ear. Accordingly, the charging box 20 may include a lower shell component 21, and the lower shell component 21 may be provided with two contoured grooves 211 for respectively accommodating the earphones 10. Each contoured groove 211 may include a first contoured groove area 2111 corresponding to the movement module 11 and a second contoured groove area 2112 corresponding to the hook-shaped structure 12. The second contoured groove areas 2112 of the two contoured grooves 211 are arranged to intersect with each other. In this way, when the two contoured grooves 211 respectively accommodate earphones 10, the hook-shaped structures 12 of the two earphones 10 can overlap with each other, for example, stacked up and down, which helps to reduce the volume of the charging box 20, making it more compact and easier for users to carry. It should be noted that overlapping means that there is at least an overlapping area between them, including partial overlap and complete overlap.

[0159] In some embodiments, with reference to FIG. 19 , the projections of the first contoured groove area 2111 and the second contoured groove area 2112 in the first reference direction overlap. Furthermore, the projections of the first contoured groove area 2111 and the second contoured groove area 2112 in the second reference direction overlap. The first reference direction and the second reference direction are perpendicular. This allows the earphone 10 to be placed in the contoured groove 211, so that the length of the projection of the charging case 20 occupied by the second contoured groove area 2112 in the first reference direction overlaps with the length of the projection of the charging case 20 occupied by the first contoured groove area 2111 in the first reference direction. Furthermore, the length of the projection of the charging case 20 occupied by the second contoured groove area 2112 in the second reference direction overlaps with the length of the projection of the charging case 20 occupied by the first contoured groove area 2111 in the second reference direction. This reduces the volume of the charging case 20, making it easier for the user to carry. The amount of reduction in the volume of the charging case 20 is related to the degree of overlap between the projection lengths in the first reference direction and the projection in the second reference direction. In other words, when the earphone 10 is placed in the contoured groove 211, the projection of the movement module 11 of the earphone 10 overlaps with the projection of the hook-shaped structure 12 in the first reference direction, and the projection of the movement module 11 overlaps with the projection of the hook-shaped structure 12 in the second reference direction. It should be noted that the above-mentioned first reference direction and the second reference direction are two directions perpendicular to each other and orthogonal to the thickness direction of the charging box 20. The first reference direction in this application has many different implementations, and the following is an exemplary description of the different implementations of the first reference direction. The following implementation of the first reference direction is at least at least one of the following implementations, and will not be repeated.

[0160] 1) In some embodiments, when two contoured grooves 211 are spaced apart in the lower shell assembly 21, the first reference direction may be the arrangement direction of the two contoured grooves 211 (i.e., the line connecting the geometric centers of the two contoured grooves 211) or a direction perpendicular to the arrangement direction.

[0161] 2) In some embodiments, when the upper shell assembly 24 opens or closes the charging box 20 by rotating relative to the lower shell assembly 21, the first reference direction may refer to a direction perpendicular to or parallel to the rotation axis of the upper shell assembly 24 relative to the lower shell assembly 21.

[0162] 3) In some embodiments, when the two contoured grooves 211 are arranged axially symmetrically, the first reference direction may be a direction perpendicular to or parallel to the symmetry axis of the two contoured grooves 211 .

[0163] Optionally, the first reference direction may also be the direction of a line connecting the same characteristic points of the two contoured grooves 211 or a direction perpendicular to the direction of the line.

[0164] It should be noted that the charging box 20 has a thickness direction and the contoured groove 211 has a depth direction. In conjunction with Figure 24, the thickness direction of the charging box 20 and the depth direction of the contoured groove 211 of the present application may refer to the direction perpendicular to the contact plane between the charging box 20 and the horizontal surface after the charging box 20 is placed stably on the horizontal surface. The thickness direction of the charging box 20 and the depth direction of the contoured groove 211 in the following embodiments are the same and will not be repeated. It should be noted that in the actual production and manufacturing process, due to process reasons, there are errors in verticality. In other words, in actual products, the two objects of the present application are perpendicular to each other, which means that the verticality of the two objects is within the allowable tolerance range. Verticality is a position tolerance. The specific tolerance range can be determined by referring to relevant national standards. The same applies to symmetry and will not be repeated. On the other hand, the projection overlap of the present application includes two situations: complete projection overlap and partial projection overlap.

[0165] In some embodiments, as shown in FIG. 19 , the projections of the first contoured groove area 2111 and the first portion 2112a of the second contoured groove area 2112 overlap in the first reference direction. This allows the size of the charging case 20 occupied by the first portion 2112a of the second contoured groove area 2112 to overlap with the size of the charging case 20 occupied by the first contoured groove area 2111 when the earphones 10 are placed in the contoured groove 211. In other words, the charging case 20 can accommodate both the first portion 2112a of the second contoured groove area 2112 and the first contoured groove area 2111 in the second reference direction, using a first size that is smaller than the sum of the size of the first portion 2112a of the second contoured groove area 2112 and the size of the first contoured groove area 2111 in the second reference direction. This allows the charging case 20 to be smaller in the second reference direction while still accommodating the earphones 10, making it easier for the user to carry.

[0166] In some embodiments, in a second reference direction perpendicular to the first reference direction, the projections of the second portion 2112b of the second contoured groove area 2112 and the first contoured groove area 2111 overlap. This allows the size of the charging case 20 occupied by the second portion 2112b of the second contoured groove area 2112 to overlap with the size of the charging case 20 occupied by the first contoured groove area 2111 when the earphones 10 are placed in the contoured groove 211. In other words, the charging case 20 can accommodate both the second portion 2112b of the second contoured groove area 2112 and the first contoured groove area 2111 in the first reference direction, using a second size that is smaller than the sum of the size of the second portion 2112b of the second contoured groove area 2112 in the first reference direction and the size of the first contoured groove area 2111 in the first reference direction. This allows the charging case 20 to be smaller in the first reference direction while still accommodating the earphones 10, making it easier for the user to carry.

[0167] In some embodiments, the projections of the first contoured groove area 2111 and the first portion 2112a of the second contoured groove area 2112 overlap in the first reference direction. Furthermore, the projections of the second portion 2112b of the first contoured groove area 2111 and the second contoured groove area 2112 overlap in the second reference direction. In this way, by adjusting the ratio of the overlap of the projections of the first contoured groove area 2111 and the second contoured groove area 2112 in the first reference direction and the second reference direction, the dimensions of the charging box 20 in the first reference direction and the second reference direction can be made more reasonable, making the shape of the charging box 20 more square, which is not only more aesthetically pleasing, but also makes it easier for the user to store the charging box 20 in a pocket or backpack.

[0168] Specifically, in some cases, the first portion 2112a of the second contoured groove area 2112 corresponds to the battery housing 123 in the hook-shaped structure 12, and the second portion 2112b of the second contoured groove area 2112 corresponds to the elastic portion of the hook-shaped structure 12. The projections of the first contoured groove area 2111 and the first portion 2112a of the second contoured groove area 2112 overlap in the first reference direction. This means that when the earphone 10 is placed in the contoured groove 211, the projections of the battery housing 123 and the movement module 11 overlap in the first reference direction. The second portion 2112b of the second contoured groove area 2112 overlaps with the projections of the first contoured groove area 2111. This means that when the earphone 10 is placed in the contoured groove 211, the projections of the elastic portion and the movement module 11 overlap in the second reference direction.

[0169] Furthermore, in the second reference direction, the second portion 2112b of the second contoured groove section 2112 is located on a side of the first contoured groove section 2111 that is away from the edge of the lower housing assembly 21 adjacent to the first contoured groove section 2111. In other words, the second contoured groove sections 2112 of the two contoured groove sections 211 are positioned adjacent to each other. This allows the portions of the hook-shaped structures 12 in the two earphones 10, which are thinner than the core module 11, to be positioned close together when two earphones 10 are accommodated. Furthermore, the second contoured groove sections 2112 of the two contoured grooves 211 intersect with each other, so that when each of the two contoured grooves 211 accommodates an earphone 10, the hook-shaped structures 12 of the two earphones 10 overlap. Furthermore, because the hook-shaped structures 12 of the earphones 10 are thinner than the core module 11, the proximity and overlap of the two hook-shaped structures 12 further improves the space utilization of the charging case 20, thereby reducing the size of the charging case 20.

[0170] In some embodiments, as shown in Figure 20 , the hook-shaped structure 12 includes a battery housing 123 and an elastic portion connecting the battery housing 123 and the core module 11. The two second contoured grooves 2112 are configured so that when two earphones 10 are accommodated, the elastic portions of the earphones 10 overlap. The elastic portion is thinner than the battery housing 123. By overlapping the elastic portions of the two earphones 10, the space occupied by the hook-shaped structure 12 in the thickness direction of the charging case 20 is reduced, thereby reducing the size of the charging case 20. The two elastic portions can overlap in various ways. For example, the edges of the two elastic portions can overlap to form an overlapping area. Alternatively, the elastic portions can be arc-shaped and overlap. Due to the limited volume of the two elastic portions, two non-connected overlapping areas are formed, with the geometric centers of the two overlapping areas forming two overlapping points. Optionally, the two contoured grooves 211 are mirror-symmetrical about the line connecting the two overlapping points; the line connecting the two overlapping points is parallel to the first reference direction or the second reference direction.

[0171] In other embodiments, the second contoured groove areas 2112 of the two contoured grooves 211 are independently provided. In this way, the two earphones 10 can be relatively independently accommodated in the charging box 20, and the use of the two earphones 10 will not be affected by each other, which makes it convenient for the user to use them separately.

[0172] Furthermore, the charging box 20 may include a main control circuit board 221 arranged in the lower shell assembly 21 and electrode terminals 222 arranged on the main control circuit board 221. Among them, the electrode terminals 222 can be provided in multiple groups according to needs, for example, two groups. Accordingly, when any earphone 10 is placed in the charging box 20, the electrode terminals 151 in the earphone 10 can be in one-to-one contact with the electrode terminals 222 in the charging box 20 to meet the requirements of charging, detection and other functions. Accordingly, the electrode terminals 222 may include a positive power supply terminal and a negative power supply terminal, and may further include a detection terminal; the lines connecting them may form a triangle, such as an equilateral triangle, or they may be arranged at intervals along a straight line, for example, spaced apart from each other and collinear.

[0173] In one embodiment, referring to Figures 7 and 24 , the electrode terminal in the charging case 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). The first electrode terminal is exposed in the contoured groove 211, and when the earphone 10 is accommodated in the contoured groove 211, the second electrode terminal is connected to the first electrode terminal.

[0174] Specifically, in some embodiments, the first electrode terminal can be arranged in the first contoured groove area 2111, and the second electrode terminal can be arranged on the movement module 11. Since the movement module 11 is a hard structure compared to the hook structure 12 and has relatively large rigidity, such a setting can provide a relatively smooth and stable contact surface for the connection between the first electrode terminal and the second electrode terminal, thereby improving the connection stability between the first electrode terminal and the second electrode terminal. In some embodiments, there can be a magnetic part in the movement module 11 (such as the first magnetic part in the above embodiment), and the charging box 20 can have a magnetic structure that cooperates with the magnetic part in the movement module 11. The connection between the first electrode terminal and the second electrode terminal can be more stable under the magnetic cooperation of the magnetic part of the movement module 11 and the magnetic structure in the charging box 20.

[0175] In some embodiments, the hook-shaped 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 metal wire 121, and the elastic portion may produce elastic deformation. The hard portion may be the adapter shell 122 and the electrode terminal 151 and magnet 127 therein. The first electrode terminal is exposed in the second contoured groove area 2112, and the second electrode terminal is arranged on the inner side of the hard portion (when the earphone 10 is accommodated in the contoured groove 211, the hard portion faces the side of the contoured groove 211, see MS in Figure 7). In this arrangement, the second electrode terminal and its related mechanical structure and circuit structure are all arranged in the hook-shaped structure 12, simplifying the structure of the core module 11. The hard portion has greater rigidity than the elastic portion. The second electrode terminal is arranged in the hard portion to increase the success rate and stability of the connection between the second electrode terminal and the first electrode terminal when the earphone 10 is accommodated in the charging box 20.

[0176] Furthermore, the inner side surface of the movement module 11 (see IS in FIG. 7 ) and the inner side surface of the hard part (see MS in FIG. 7 ) are inclined to each other. By setting the inner side surface of the movement module 11 and the inner side surface of the hard part to be inclined to each other, it is possible to facilitate the adaptation of the earphone 10 to the human ear. Specifically, such a setting enables the movement module 11 to extend into the concha cavity while the hard part can bypass the tragus and connect to the elastic part located on the back side of the ear, thereby reducing the interference between the earphone 10 and the ear and increasing the wearing comfort of the earphone 10. In some embodiments, the contoured groove 211 of the charging box 20 can be configured so that the first contoured groove area 2111 for accommodating the movement module 11 and the second contoured groove area 2112 for accommodating the hard part are inclined to each other to increase the adaptability to the earphone 10. When viewed along the thickness direction of the charging case 20, compared to a case where the areas of the first profiling groove area 2111 and the second profiling groove area 2112 for accommodating the movement module 11 are parallel to each other, by arranging the profiling groove 211 so that the areas of the first profiling groove area 2111 and the second profiling groove area 2112 for accommodating the movement module 11 are inclined relative to each other, the projected size of the charging case 20 in the thickness direction can be reduced, making it easier to carry. Compared to a case where the areas of the first profiling groove area 2111 and the second profiling groove area 2112 for accommodating the movement module 11 are perpendicular to each other, by arranging the profiling groove 211 so that the areas of the first profiling groove area 2111 and the second profiling groove area 2112 for accommodating the movement module 11 are inclined relative to each other, the required size of the charging case 20 in the thickness direction when the earphones 10 are stored in the charging case 20 is reduced, while also improving the user's sense of operability when storing the earphones 10. In summary, by arranging the contoured groove 211 so that the first contoured groove area 2111 for accommodating the core module 11 and the second contoured groove area 2112 for accommodating the hard portion are inclined relative to each other, the charging box 20 can be more adaptable to the earphones 10. Furthermore, the thickness, length, and width of the charging box 20 are optimized, making it easier for users to carry and meeting the ergonomic requirements of the charging box 20.

[0177] In some embodiments, as an example, referring to FIG24 , the extension direction of the first electrode terminal is inclined relative to the thickness direction of the charging box 20 (refer to the angle β in FIG24 ). With such a configuration, on the one hand, the space occupied by the first electrode terminal in the thickness direction of the charging box 20 can be reduced, which is beneficial to reducing the volume of the charging box 20. On the other hand, when the earphone 10 is accommodated in the contoured groove 211, the extension direction of the first electrode terminal can match the extension direction of the second electrode terminal, thereby increasing the success rate of the connection between the first electrode terminal and the second electrode terminal. Optionally, the above-mentioned angle β is between 10 degrees and 45 degrees, for example, between 30 degrees and 40 degrees, or between 15 degrees and 25 degrees, and preferably 20 degrees.

[0178] In some embodiments, the normal direction of the inner side surface IS of the core module 11 and the extension direction of the second electrode terminal are arranged to be inclined to each other, which can facilitate the connection between the first electrode terminal and the second electrode terminal and improve the connection success rate.

[0179] Specifically, when the earphone 10 is placed into the contoured groove 211, the first electrode terminal extends in an angled manner relative to the thickness of the charging case 20. This allows the contact area between the first and second electrode terminals to gradually increase as the earphone 10 is placed. This ensures that the change in contact area between the first and second electrode terminals is not instantaneous. This helps improve the success rate of the connection between the first and second electrode terminals and enhances the stability of the first and second electrode terminals after connection.

[0180] In some embodiments, the depth of the first contoured groove area 2111 gradually increases in the direction away from the first electrode terminal. When the earphone 10 is placed in the contoured groove 211, the movement module 11 can cooperate with the depth change area of ​​the first contoured groove area 2111, thereby guiding and positioning the movement module 11, making it easier for the movement module 11 to be placed in the first contoured groove area 2111.

[0181] In some embodiments, the first electrode terminal is exposed at one end of the second contoured groove area 2112 proximal to the first contoured groove area 2111. The depth of the area of ​​the second contoured groove area 2112 accommodating the hard portion gradually increases as it moves away from the first contoured groove area 2111. This allows the areas of the first and second contoured groove areas 2111, 2112 accommodating the hard portion to form a tapered structure at a certain angle along the thickness direction of the charging case 20 that matches the hard portion of the earphone 10 and the core module 11. This serves as a guide, facilitating the earphone 10's engagement with the contoured groove 211 when placed in the charging case 20. When the earphone 10 is accommodated in the contoured groove 211, the tapered structure also serves as a limiter, restricting its movement relative to the contoured groove 211 and improving its stability when accommodated in the charging case 20.

[0182] In some embodiments, a first support platform 2113 is provided at the bottom of the second contoured groove area 2112, the first electrode terminal is disposed on the first support platform 2113, and the earphone 10 is provided with a second support platform 176, with the second electrode terminal disposed on the second support platform 176. As an example, as shown in FIG7 , the second support platform 176 can be provided on the hard portion of the earphone 10. The second support platform 176 can also be provided at other locations on the movement module 11 or the hook-shaped structure 12, without specific limitation. 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. The provision of the first support platform 2113 and the second support platform 176 can increase the structural strength of the earphone 10 at the second electrode terminal and the contoured groove 211 at the first electrode terminal, thereby increasing the stability of the connection between the first and second electrode terminals. 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 more wear, thereby reducing the wear of the first electrode terminal, the second electrode terminal and other parts during the repeated use of the earphone 10, which is beneficial to improving the service life of the earphone 10 and the charging box 20.

[0183] Optionally, 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 can be tilted relative to the thickness direction of the charging case 20. This allows the first and second electrode terminals to connect more smoothly after the first and second support platforms 2113 and 176 abut and mate. Furthermore, this arrangement allows the contact area between the first and second support platforms 2113 and 176 to gradually increase as the earphones 10 are inserted, ensuring that the change in contact area between the first and second support platforms 2113 and 176 is not instantaneous. This helps improve the stability of the abutment between the first and second support platforms 2113 and 176 and increases the success rate of the connection between the first and second electrode terminals. Optionally, the contact surface between the first and second support platforms 2113 and 176 can be tilted relative to the bottom wall of the second contoured groove area 2112, forming a stepped structure between the first and second support platforms 2113 and 176, thereby facilitating the abutment between the first and second support platforms 2113 and 176.

[0184] In 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. This arrangement allows the contact surface between the first and second electrode terminals to be parallel to the contact surface between the first and second support platforms 2113 and 176. As the earphone 10 is gradually placed into the contoured groove 211, the connection between the first and second electrode terminals is smoother, reducing the sense of damping during the mating of the two support platforms.

[0185] In other embodiments, the normal direction of the contact surface between the first supporting platform 2113 and the second supporting platform 176 is tilted relative to the extension direction of the first electrode terminal. This allows the contact surface between the first and second electrode terminals to form a stepped structure relative to the contact surface between the first and second supporting platforms 2113 and 176, thereby providing a positioning and limiting function during the mating process of the first and second electrode terminals, thereby improving the stability of the connection between the first and second electrode terminals.

[0186] As an example, referring to Figures 20 and 9 , the hook-shaped structure 12 may include an elastic portion that connects the movement module 11 and the battery housing 123. The elastic portion may be the portion of the elastic wire 121 exposed from the adapter housing 122 and the battery housing 123. The two second contoured groove areas 2112 may be configured such that the elastic portions of the two earphones 10 overlap. This allows one earphone 10 to be placed into the contoured groove 211 before the other earphone 10 is placed. The earphone 10 placed first may deform to a certain degree, allowing the second earphone 10 to fit more easily into the lower housing assembly 21.

[0187] Furthermore, when observing from directly above the charging box 20, for example, by placing the charging box 20 on a table and then looking down at it, the elastic portion of the hook-shaped structure 12 can be arranged in an arc shape, and when the elastic portions of the two earphones 10 overlap each other, two overlapping points are formed (for example, as shown in OP1 and OP2 in FIG20 ), and the two contoured grooves 211 can be mirror-symmetrical with the line connecting the two overlapping points (that is, the line segment OP1OP2) as the axis of symmetry, so that the distribution of the two contoured grooves 211 is more reasonable, which is conducive to improving the appearance quality of the charging box 20.

[0188] In some embodiments, the area between the two overlapping points of the two second contoured grooves 2112 can retain a portion of the lower housing assembly 21. Specifically, the two second contoured grooves 2112 form an island at their confluence, which helps limit the freedom of movement of either earphone 10 after being placed in the contoured groove 211. In other words, the two second contoured grooves 2112 are surrounded by the hook-shaped structure 12, and the area between the two overlapping points forms the aforementioned island.

[0189] In one embodiment, the two earphones 10 are respectively intended to be worn on the left and right ears of the user, and the movement modules 11 of the two earphones 10 are respectively located on both sides of the first reference direction. Arranged in the above manner, when viewed from the first reference direction, that is, the direction in which the user opens the charging box 20 from the front, the earphone 10 intended to be worn on the left ear can be accommodated on the left side relative to the user, while the earphone 10 intended to be worn on the right ear can be accommodated on the right side relative to the user, so as to facilitate the user to access and store the earphones 10 in the charging box 20. Optionally, the two contoured 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.

[0190] In some embodiments, the two second contoured groove areas 2112 are surrounded by the hook-shaped structure 12 and the area between the two overlapping points is merged into one, that is, the above-mentioned island does not exist, so that the two second contoured groove areas 2112 are integrated at their confluence, which facilitates the earphone 10 to be easily placed in the corresponding contoured groove 211.

[0191] By way of example, in conjunction with Figures 20 and 9 , the hook-shaped structure 12 may include a hard portion located between the elastic portion and the movement module 11, the hard portion connecting the movement module 11 and the elastic portion. The hard portion may be, for example, the adapter housing 122 and the electrode terminals 151 and magnets 127 therein. Accordingly, the lower housing assembly 21 may include a retaining structure 212, which may be disposed within or adjacent to the contoured groove 211. When either earphone 10 is placed in the contoured groove 211, the retaining structure 212 may exert a compressive force on the hard portion of the earphone 10 toward the bottom of the contoured groove 211, thereby maintaining the relative position between the earphone 10 and the lower housing assembly 21. At least a portion of the elastic portion of the same earphone 10 may form a cantilever structure relative to the point of action of the retaining structure 212 on the hard portion. This means that at least a portion of the elastic portion of any earphone 10 may not contact the bottom of the contoured groove 211 (particularly the second contoured groove region 2112). In this way, after one of the two earphones 10 is placed into the contoured groove 211 first, when the other earphone 10 is placed into the contoured groove 211 later, the elastic part of the earphone 10 placed first can be more easily deformed to a certain extent, so that the earphone 10 placed later can be better placed in the lower shell assembly 21.

[0192] In some embodiments, the limiting structure 212 may be a protrusion that interferes with the hard portion of the earphone 10 during the process of placing the earphone 10 into or removing it from the contoured groove 211. The protrusion may be disposed adjacent to the contoured groove 211.

[0193] As an example, the number of the above-mentioned protrusions can be two, and the two protrusions are located on opposite sides of the contoured groove 211. When any earphone 10 is placed into the contoured groove 211, the hard part of the earphone 10 is stuck between the two protrusions under the pressing pressure applied by the user.

[0194] Furthermore, the charging box 20 may include a first magnetic structure 231 and a second magnetic structure 232 disposed in the lower shell assembly 21, and the electrode terminal 222 may be located between the first magnetic structure 231 and the second magnetic structure 232. When any earphone 10 is placed in the contoured groove 211, the first magnetic structure 231 and the first magnetic member in the earphone 10 may form a first magnetic matching pair, and the second magnetic structure 232 and the second magnetic member in the earphone 10 may form a second magnetic matching pair. The aforementioned first magnetic matching pair and the aforementioned second magnetic matching pair enable the electrode terminal 222 to contact the electrode terminal 151 in a one-to-one correspondence. In this way, since the electrode terminal 222 and the electrode terminal 151 are located between the first magnetic matching pair and the second magnetic matching pair after pairing, the contact between the earphone 10 and the charging box 20 is better. It is worth noting that under the action of the limiting structure 212, the contact between the earphone 10 and the charging box 20 can be further guaranteed.

[0195] In some embodiments, the limiting structure 212 can be a limiting groove that communicates with the contoured groove 211. After any earphone 10 is placed in the contoured groove 211, the hook-shaped structure 12 further moves into the limiting groove, that is, the earphone 10 as a whole has a certain displacement. The aforementioned limiting groove can be provided in the contoured groove 211.

[0196] As an example, the charging case 20 may include a first magnetic structure 231 disposed within the lower housing assembly 21. When either earphone 10 is placed in the contoured groove 211, the first magnetic structure 231 forms a first magnetic matching pair with the first magnetic element within the earphone 10, e.g., two magnets of opposite polarity attract each other, thereby guiding the hook structure of the earphone 10 to further move into the aforementioned limiting groove. The bottom of the contoured groove 211 may be provided with a guide surface for guiding the hook structure of the earphone 10 into the aforementioned limiting groove. For example, the depth of the second contoured groove area 2112 near the first contoured groove area 2111 is greater than the depth of the first contoured groove area 2111, i.e., there is a height difference between the two. The contoured groove 211 is configured as a bevel transition in the area with the height difference to form the aforementioned guide surface. Accordingly, the aforementioned limiting groove may also be located in the section of the second contoured groove area 2112 near the first contoured groove area 2111.

[0197] Furthermore, the charging box 20 may include a second magnetic structure 232 disposed within the lower shell assembly 21, and the electrode terminal 222 may be located between the first magnetic structure 231 and the second magnetic structure 232. After any earphone 10 is placed in the contoured groove 211, the second magnetic structure 232 and the second magnetic member within the earphone 10 may form a second magnetic matching pair, such as two magnets of opposite polarity attracting each other, to guide the hook structure of the earphone 10 to move further into the aforementioned limiting groove together with the aforementioned first magnetic matching pair, so that any earphone 10 has more power to move further into the aforementioned limiting groove after being placed in the contoured groove 211. Similarly, the aforementioned first magnetic matching pair and the aforementioned second magnetic matching pair enable the electrode terminal 222 to contact the electrode terminal 151 in a one-to-one correspondence. In this way, since the electrode terminal 222 and the electrode terminal 151 are located between the first magnetic matching pair and the second magnetic matching pair after being paired, the contact between the earphone 10 and the charging box 20 is better. It is worth noting that: under the action of the limiting structure 212, the contact between the earphone 10 and the charging box 20 can be further guaranteed.

[0198] It should be noted that the first magnetic component may be the speaker 112 in the core module 11 , specifically the magnetic circuit system of the speaker 112 ; the second magnetic component may be the magnet 127 provided on the hard part of the earphone 10 .

[0199] Typically, when the earphones 10 are placed in the charging case 20, deformation of the hook structure 12 can reduce the success rate of the earphones 10 being placed in the case or affect the placement stability of the earphones 10. For example, the movement module 11 of the earphones 10 can be accommodated in the first contoured groove area 2111, and the hook structure 12 can be accommodated in the second contoured groove area 2112. However, due to the elasticity of the hook structure 12, during the process of placing the hook structure 12 in the second contoured groove area 2112, the hook structure 12 may deform due to previous use or movement deformation caused by inertial force, resulting in the hook structure 12 not being able to properly correspond to the shape of the second contoured groove area 2112, making it difficult for the hook structure 12 to be placed in the contoured groove area 211. At the same time, the placement relationship between the movement module 11 and the first contoured groove area 2111 may be unstable. To improve the above technical problems, the following embodiments can be provided.

[0200] In some embodiments, in combination with Figure 20, by setting a certain movable gap between the movement module 11 and the side wall of the first contoured groove area 2111, and setting a certain movable gap between the hook structure 12 and the side wall of the second contoured groove area 2112, during the process of placing the earphone 10 into the contoured groove 211, the contoured groove 211 can provide sufficient space to allow the hook structure 12 to exist or undergo a certain degree of deformation, so as to ensure that the movement module 11 and the hook structure 12 can be smoothly placed in the first contoured groove area 2111 and the second contoured groove area 2112 respectively with less user intervention, thereby improving the success rate of the earphone in the box and the placement stability. Furthermore, since one end of the hook structure 12 is connected to the movement module 11 and the other end is cantilevered, the part of the hook structure 12 away from the movement module 11 can be regarded as the far end of the cantilever beam. Considering that in the process of placing the earphone 10 into the contoured groove 211, the part of the hook structure 12 away from the movement module 11 will produce a larger deformation amount than other parts, and at the same time, the movement module 11 only requires a smaller movable gap than the hook structure 12, so that the movement module 11 can be placed in the first contoured groove area 2111. If the movable gap is too large, it will be not conducive to the size optimization of the charging box 20, and will cause the movement module 11 to be unstable in the charging box, which is prone to shaking and abnormal noise.

[0201] In some embodiments, when the earphones 10 are placed in the contoured groove 211, the clearance between the portion of the hook structure 12 distal from the core module 11 and the sidewall of the second contoured groove region 2112 (see sidewall 2111c in FIG. 20 ) is set to be greater than the clearance between the core module 11 and the sidewall of the first contoured groove region 2111. This allows the first contoured groove region 2111 to smoothly insert the core module 11, while providing greater room for movement in the second contoured groove region 2112. This further improves the success rate of inserting the earphones 10 into the case and their placement stability, while also facilitating optimization of the size of the charging case 20. While housed in the second contoured groove region 2112, the hook structure 12 may still deform due to shaking or stress, causing the size of the clearance between the hook structure 12 and the sidewall of the second contoured groove region 2112 to change, but this change does not eliminate the clearance. Optionally, the size of the movable gap between the portion of the hook-shaped structure 12 away from the movement module 11 and the side wall of the second contoured groove area 2112 ranges from 0.5 to 1.5 mm. For example, the size of the movable gap can be 1 to 1.3 mm, specifically 1.2 mm. Setting the size of the movable gap in this way can increase the success rate of the hook-shaped structure 12 being placed into the second contoured groove area 2112, and has a smaller impact on the size of the charging box 20.

[0202] Optionally, the size of the movable gap between the core module 11 and the sidewall of the first contoured groove area 2111 ranges from 0.05 to 0.2 mm, for example, 0.07 to 0.15 mm, and more specifically, 0.1 mm. This movable gap ensures that the core module 11 can be stably accommodated in the first contoured groove area 2111, positioning and limiting the position of the earphone 10 within the contoured groove 2111, and improving the stability of the electrode terminal contact.

[0203] In some embodiments, the portion of the hook-shaped structure 12 away from the movement module 11 includes a battery housing 123 for accommodating a battery. The battery housing 123 is located in the portion of the hook-shaped structure 12 away from the movement module 11. The hook-shaped structure 12 may also include an elastic portion connecting the movement module 11 and the battery housing 123. The battery housing 123 is larger than the elastic portion, allowing it to wrap around the user's ear to secure the earphones 10. Furthermore, the battery housing 123 supports the ear from behind, improving the stability of the earphones 10 when worn. The clearance between the battery housing 123 and the sidewalls of the second contoured groove 2112 is greater than the clearance between the movement module 11 and the sidewalls of the first contoured groove 2111. This increases the success rate of inserting the battery housing 123 into the second contoured groove 2112, facilitating storage of the earphones 10. Furthermore, when the earphone 10 is accommodated in the contoured groove 211, the clearance between the elastic portion and the sidewall of the second contoured groove area 2112 is greater than the clearance between the movement module 11 and the sidewall of the first contoured groove area 2111. This arrangement increases the success rate of the elastic portion being inserted into the second contoured groove area 2112, facilitating the accommodation of the earphone 10.

[0204] In some embodiments, the hook-shaped structure 12 also includes a hard portion connecting the elastic portion and the movement module 11. Since the hard portion can be used to set the electrode terminal 151 or the second magnetic attraction component, it needs to have higher rigidity than the elastic portion and has higher requirements for stability. When the earphone 10 is accommodated in the contoured groove 211, the movable gap between the elastic portion and the side wall of the second contoured groove area 2112 can be set to be larger than the movable gap between the hard portion and the side wall of the second contoured groove area 2112. In this way, it is easy to put the elastic portion into the second contoured groove area 2112, and the hard portion can be more stably accommodated in the second contoured groove area 2112, so that the hard portion can cooperate with the movement module 11, increase the stability of the earphone 10 in the contoured groove 211, and help to improve the stability and reliability of the electrode terminal contact or the second magnetic attraction component.

[0205] In some embodiments, the charging case 20 includes at least electrode terminals for charging, and the electrode terminals may not be provided on the battery housing 123. It is understandable that the battery housing 123 is at the end of the hook-shaped structure 12, and the degree of deformation it produces is relatively large. Providing the electrode terminals on the battery housing 123 is not conducive to their matching with the electrode terminals in the lower housing assembly 21. Specifically, the electrode terminals may not be provided on the battery housing 123, but on a structure on the earphone 10 that produces less deformation, such as the movement module 11 or the hard portion, to facilitate matching between the electrode terminals.

[0206] In some embodiments, with reference to FIG19 , the lower housing assembly 21 can be provided with a limiting structure. When the earphone 10 is placed in the contoured groove 211, the movement module 11 can be accommodated in the first contoured groove area 2111 via the limiting structure. For example, the limiting structure can be a snap-fit ​​structure, and the movement module 11 can be placed in the first contoured groove area 2111 by snapping and engaging with the limiting structure. Another example is that the limiting structure can be a magnetic structure, and the movement module 11 can be placed in the first contoured groove area 2111 by magnetically engaging with the limiting structure. Specifically, the first contoured groove area 2111 can also be provided with a first magnetic structure 231, and the movement module 11 can be provided with a first magnetic member. When the movement module is placed in the first contoured groove area 2111, the first magnetic member and the first magnetic structure 231 are magnetically engaged. The details of magnetically placing the movement module 11 in the first contoured groove area 2111 can be found in the description of the above embodiment and will not be repeated here. The core module 11 can be stably accommodated in the first contoured groove area 2111 in the above manner, which can limit the movement of the earphone 10 in the charging box 20 and improve the matching stability between the electrode terminals.

[0207] As an example, in conjunction with Figures 25 and 26, the charging box 20 also includes an upper shell assembly 24, which cooperates with the lower shell assembly 21 when the charging box 20 is in the closed state. The upper shell assembly 24 is provided with a limiting member 245, which abuts against the hook structure 12 when the charging box 20 is in the closed state. In this way, when the charging box 20 is closed, the limiting member 245 can apply pressure to the hook structure 12, thereby limiting the movement of the hook structure 12 in the thickness direction of the charging box 20. Furthermore, friction will be generated between the limiting member 245 and the hook structure 12, thereby limiting the movement of the hook structure 12 in other directions, so as to reduce abnormal noise caused by the movement of the hook structure 12, and at the same time reduce the wear of the earphone 10 and the charging box 20.

[0208] The number of the restricting member 245 can be one, or two or more. In some embodiments, the number of the restricting member 245 is one, and the restricting member 245 abuts against the hook-shaped structures 12 of both earphones 10 when the charging box 20 is closed. In this way, the movement of both hook-shaped structures 12 can be restricted by one restricting member 245. In some embodiments, the number of the restricting member 245 can be two, and when the charging box 20 is closed, the two restricting members 245 can respectively restrict the movement of the hook-shaped structures 12 of the two earphones 10.

[0209] In some embodiments, the hook-shaped structure 12 includes a battery housing 123 for accommodating a battery, and the limiting member 245 abuts against the battery housing 123 when the charging box 20 is closed. The battery housing 123 is the larger portion of the hook-shaped structure 12, and the limiting member 245 can improve the stability of the hook-shaped structure 12 when accommodated in the charging box 20 by limiting the movement of the battery housing 123. Furthermore, the movement module 11 can be accommodated in the first contoured groove area 2111 by snapping or magnetic attraction to limit the freedom of the movement module 11. In this way, when the earphones 10 are accommodated in the contoured groove 211, the freedom of both the movement module 11 and the hook-shaped structure 12 of the earphones 10 can be restricted, thereby significantly limiting the freedom of movement of the earphones 10 and preventing the earphones 10 from shaking in the charging box 20. Furthermore, this prevents wear and tear on the charging box 20 and the earphones 10, thereby increasing their service life.

[0210] In other embodiments, the movable gap between the battery housing 123 and the side wall of the second contoured groove area 2112 is larger than the movable gap between the movement module 11 and the side wall of the first contoured groove area 2111. The beneficial effects produced by such a setting can be found in the description of the aforementioned embodiment and will not be repeated here. The movable gap between the battery housing 123 and the side wall of the second contoured groove area 2112 is larger, and the success rate of placing the earphones 10 into the charging box 20 becomes higher, but it will cause the hook structure 12 to shake more easily. On this basis, further, by setting the limiting member 245 to abut against the battery housing 123 when the charging box 20 is closed, it is possible to reduce the shaking of the hook structure 12 while ensuring that the success rate of placing the earphones 10 is improved.

[0211] Optionally, when the earphones 10 are accommodated in the contoured groove 211 of the charging case 20, the first magnetic member of the core module 11 engages with the first magnetic structure of the lower housing assembly 21. This restricts the freedom of the core module 11, thereby reducing its shaking. Furthermore, by providing a restricting member 245 abutting the hook structure 12, the shaking of the hook structure 12 can be reduced, thereby reducing the shaking of the earphones 10 as a whole.

[0212] Optionally, the lower housing assembly 21 may include a limiting structure 212, which may be disposed within or adjacent to the contoured groove 211. When an earphone 10 is placed in the contoured groove 211, the limiting structure 212 may apply a pressing force to the hard portion of the earphone 10 or the movement module 11 toward the bottom of the contoured groove 211, thereby maintaining the relative position between the earphone 10 and the lower housing assembly 21. This limits the freedom of the earphone 10 and reduces the shaking of the earphone 10 within the charging case 20. Furthermore, by abutting the hook-shaped structure 12 with the limiting member 245, the shaking of the hook-shaped structure 12 can be reduced, thereby further reducing the shaking of the earphone 10.

[0213] In some embodiments, the limiting member 245 can be a flexible structure. For example, the material of the limiting member 245 can be silicone or rubber. The Shore hardness of the limiting member 245 can be in the range of 20-50. With this configuration, the limiting member 245 can deform when abutting the hook structure 12. On the one hand, it can reduce the wear of the limiting member 245 on the hook structure 12. On the other hand, it can make the force applied by the limiting member 245 on the hook structure 12 more uniform, so that the limiting member 245 can better fit the shape of the hook structure 12, thereby further limiting the movement of the hook structure 12 in multiple directions, reducing the shaking of the earphone 10 in the contoured groove 211, and reducing abnormal noise caused by movement.

[0214] In other embodiments, the restricting member 245 may include an abutting portion and a telescopic portion. The telescopic portion connects the abutting portion to the upper housing assembly 24. When the charging box 20 is closed, the telescopic portion elastically expands and contracts to bring the abutting portion into contact with the hook structure 12. In other words, the telescopic portion can provide elastic force when the abutting portion abuts the hook structure 12, thereby allowing the abutting portion to apply pressure to the hook structure 12 to limit the shaking of the hook structure 12. The telescopic portion can specifically be a spring, a torsion spring, or other structure.

[0215] Optionally, the thickness of the restricting member 245 can range from 1.2 to 2 mm. For example, it can be 1.2 mm, 1.5 mm, or 2 mm. If the thickness of the restricting member 245 is less than 1.2 mm, the restricting member 245 may not sufficiently interfere with the hook structure 12, and may not generate sufficient pressure to restrict the movement of the hook structure 12. If the thickness of the restricting member 245 is greater than 2 mm, the restricting member 245 may generate excessive pressure on the hook structure 12, causing the hook structure 12 to continue to deform when accommodated, thereby causing the hook structure 12 to lose its original shape, affecting the user's wearing experience.

[0216] In some embodiments, the first portion 2112a of the second contoured groove area 2112 is used to accommodate a portion of the hook-shaped structure 12 (e.g., the battery housing 123). When the charging case 20 is closed, the projections of the first portions 2112a of the two second contoured groove areas 2112 in the thickness direction of the charging case 20 at least partially cover the projections of the restricting member 245 in the thickness direction of the charging case 20. This arrangement enables the restricting member 245 to at least partially abut the hook-shaped structure, and the restricted area of ​​the restricting member 245 does not extend beyond the area of ​​the first portion 2112a of the second contoured groove area 2112, thereby reducing potential redundancy of the restricting member 245 and lowering costs.

[0217] Furthermore, with reference to FIG. 26 , in some embodiments, the limiting member 245 may be a single arc-shaped structure that abuts both hook structures 12 simultaneously. The length of the projection of the limiting member 245 in a first reference direction perpendicular to the axis of the rotating shaft mechanism 25 (see L in FIG. 26 ) ranges from 20 to 24 mm, for example, 21 to 23 mm or 22 to 22.5 mm. If the projection length of the limiting member 245 in the first reference direction is less than 20 mm, the contact area between the limiting member 245 and each hook structure 12 will be reduced, and the limiting member 245 may even be unable to abut both hook structures 12 simultaneously, resulting in the limiting member 245 losing its ability to simultaneously limit both hook structures 12. If the projection length of the limiting member 245 in the first reference direction is greater than 24 mm, the limiting member 245 will have redundant length beyond the portion that abuts the hook structure 12, which can increase production costs.

[0218] In some embodiments, the length of the projection of the restricting member 245 in a second reference direction perpendicular to the first reference direction (see H in FIG. 26 ) ranges from 3 to 7 mm. For example, it may be 3 to 6 mm or 5 to 6 mm. If the length of the projection of the restricting member 245 in the second reference direction is less than 3 mm, the area of ​​contact between the restricting member 245 and the hook structure 12 will be reduced, weakening the ability of the restricting member 245 to restrict the movement of the hook structure 12. If the length of the projection of the restricting member 245 in the second reference direction is greater than 7 mm, the area of ​​contact between the restricting member 245 and the hook structure 12 will be larger, excessively increasing the pressure exerted by the restricting member 245 on the hook structure 12 and causing the hook structure 12 to deform unexpectedly.

[0219] In some embodiments, the upper housing assembly 24 is provided with a receiving slot 244 for accommodating the earphones 10 when the charging case 20 is closed. The receiving slot 244 can accommodate the portion of the earphones 10 not accommodated by the contoured groove 211 when the upper housing assembly 24 is closed to the lower housing assembly 21, thereby tightly closing the upper and lower housing assemblies 24 and 21. Furthermore, when the charging case 20 is closed, the sidewalls of the receiving slot 244 can further limit the movement of the earphones 10 within the charging case 20. Furthermore, the aforementioned limiting member 245 is provided within the receiving slot 244. The limiting member 245 cooperates with the receiving slot 244 so that when the earphones 10 are simultaneously accommodated in the contoured groove 211 and the receiving slot 244, the limiting member 245 can apply pressure to the hook structure 12 to limit its movement and reduce shaking and abnormal noise.

[0220] Furthermore, in conjunction with Figure 20, the second contoured groove areas 2112 of the two contoured grooves 211 are arranged to intersect with each other, so that when the two contoured grooves 211 respectively accommodate the earphones 10, the hook-shaped structures 12 of the two earphones 10 overlap with each other, forming a first overlapping point OP1 close to the hinge mechanism 25 and a second overlapping point OP2 away from the hinge mechanism 25. This arrangement enables the hook-shaped structures 12 of the two earphones 10 to be placed overlapping, which is beneficial for reducing the volume of the charging box 20. In the direction of the line connecting the first overlapping point OP1 and the second overlapping point OP2, the area where the limiting member 245 abuts the hook-shaped structure 12 is located in the direction of the second overlapping point OP2 away from the first overlapping point OP1. When the hook-shaped structures 12 are accommodated in the contoured grooves 211, they overlap with each other, and the overlapping portion can limit the freedom of movement of some of the hook-shaped structures 12. By arranging the area where the limiting member 245 contacts the hook structure 12 on the side of the second overlapping point OP2 facing away from the first overlapping point OP1, the degree of freedom of the hook structure 12 can be further effectively reduced, thereby further restricting the movement of the hook structure 12. Optionally, when the charging box 20 is closed, the limiting member 245 contacts the portion of the hook structure 12 corresponding to the second overlapping point OP2. In this way, since the hook structures 12 overlap at the second overlapping point OP2, the thickness of the two hook structures 12 are superimposed. The portion of the limiting member 245 contacting the second overlapping point OP2 can ensure that the hook structure 12 has a smaller thickness while limiting its degree of freedom, thereby reducing production costs.

[0221] Optionally, when the charging box 20 is in the closed state, the distance between the limiting member 245 and the side wall of the upper shell assembly 24 near the second overlapping point OP2 ranges from 15 to 20 mm. This arrangement enables the limiting member 245 to abut against the portion of the hook structure 12 near the second overlapping point OP2. The areas of the two hook structures 12 near the second overlapping point OP2 have overlapping parts, so that this area has a higher height in the thickness direction of the charging box 20, thereby reducing the thickness of the limiting member 245. If the distance between the limiting member 245 and the edge of the lower shell assembly 21 near the second overlapping point OP2 is less than 15 mm, the limiting member 245 is far away from the second overlapping point OP2, and the thickness of the limiting member 245 needs to be increased before it can abut against the hook structure 12. If the distance between the limiting member 245 and the edge of the lower shell assembly 21 near the second overlapping point OP2 is greater than 20 mm, the area of ​​the limiting member 245 abutting against the hook structure 12 will be reduced, resulting in a weakened limiting effect.

[0222] As an example, in conjunction with Figures 21 and 22, the charging box 20 may include an upper shell assembly 24, and a hinge mechanism 25 connecting the upper shell assembly 24 and the lower shell assembly 21, so that the charging box 20 can be opened or closed. The hinge mechanism 25 may include a lower fixing seat 251 integrally formed with the lower shell assembly 21 and an upper fixing seat 252 integrally formed with the upper shell assembly 24, as well as a hinge 253; the lower fixing seat 251 may extend into the upper shell assembly 24, and then be pivotally connected to the upper fixing seat 252 through the hinge 253. Furthermore, the hinge mechanism 25 may include a reinforcement member 254 connected to the lower fixing seat 251, the structural strength of the reinforcement member 254 being greater than the structural strength of the lower fixing seat 251; the hinge 253 is further provided through the reinforcement member 254 to provide structural reinforcement for the hinge mechanism 25. Among them, the reinforcement 254 and the lower fixing seat 251 can be an integrally formed structural part, for example, integrally formed through a metal insert injection molding process; or they can be two separate structural parts and connected together through one or a combination of methods such as glue connection, screw connection, and clamping.

[0223] Furthermore, the hinge mechanism 25 may include an elastic member 255, one end of which is connected to the lower housing assembly 21, for example, to the lower fixing seat 251, and the other end of the elastic member 255 is connected to the upper housing assembly 24, so as to maintain the open state or the closed state of the charging box 20. In the process of opening or closing the charging box 20, the elastic member 255 elastically deforms and provides a certain damping feeling. Of course, this damping feeling can also be partially derived from the friction resistance when the hinge 253 and the connected structure rotate.

[0224] As an example, referring to FIG. 21 , the elastic member 255 can be configured as a Z-shaped torsion spring. Its basic structure is well known to those skilled in the art and will not be further described here. One of the lower fixing seat 251 and the upper shell assembly 24 can be provided with a mounting hole 2411, and the other can be provided with a mounting slot 2511. For example, the mounting hole 2411 is provided on the upper shell body 241 and is located between the two upper fixing seats 252 in the direction in which the rotating shaft 253 extends. The mounting slot 2511 is provided on the lower fixing seat 251 and is located between the two sleeve portions 2542 in the direction in which the rotating shaft 253 extends. Thus, during installation of the elastic member 255, one end of the elastic member 255 first extends into the mounting hole 2411 along the axial direction of the mounting hole 2411. The other end of the elastic member 255 then inserts into the mounting slot 2511 in a direction perpendicular to the axial direction of the mounting slot 2511. This reduces the deformation of the elastic member 255 during installation and helps maintain the reliability of the elastic member 255. Furthermore, the mounting hole 2411 and the mounting groove 2511 can be respectively configured as through-hole structures along their respective axial directions.

[0225] As an example, with reference to FIG21 , two upper fixing seats 252 can be spaced apart along the extension direction of the rotating shaft 253, and the lower fixing seat 251 can be located between the two upper fixing seats 252 and spaced apart from the two upper fixing seats 252 along the extension direction of the rotating shaft 253, thereby facilitating support for the rotating shaft 253. The reinforcing member 254 can include a connecting portion 2541 connected to the lower fixing seat 251 and two sleeve portions 2542 spaced apart along the extension direction of the rotating shaft 253. The two sleeve portions 2542 can be located in the spaced region between the lower fixing seat 251 and the two upper fixing seats 252. Accordingly, the rotating shaft 253 is disposed within the lower fixing seat 251, the two sleeve portions 2542, and the two upper fixing seats 252.

[0226] As an example, referring to FIG22 , the lower shell assembly 21 may include a lower shell body 213 and a lower shell lining 214 disposed inside the lower shell body 213. The lower fixing seat 251 and the lower shell body 213 may be integrally molded plastic parts, and the reinforcement 254 may be a metal part. The connecting portion 2541 may be located between the lower shell body 213 and the lower shell lining 214, so that the reinforcement 254 is not exposed, at least when the charging box 20 is in the closed state. Accordingly, the contoured groove 211 and the limiting structure 212 may be disposed on the lower shell lining 214, and the main control circuit board 221 and the electrode terminals 222, the first magnetic structure 231, the second magnetic structure 232, and the like thereon may be disposed between the lower shell body 213 and the lower shell lining 214. Furthermore, the upper shell assembly 24 may include an upper shell body 241 and an upper shell liner 242 disposed inside the upper shell body 241 . The upper fixing seat 252 and the upper shell body 241 may be integrally formed plastic parts.

[0227] Through the above method, compared with the related art in which the upper shell component 24 is connected to the lower shell component 21 through a metal connector, that is, the upper shell component 24 and the lower shell component 21 cannot be connected together after the metal connector is removed, and the metal connector must be exposed, in this technical solution, the upper shell component 24 and the lower shell component 21 are still connected together after the reinforcement 254 is removed, and the reinforcement 254 may not be exposed, which is beneficial to reducing the cost of the charging box 20 and the consistency of appearance.

[0228] As an example, in conjunction with Figures 28-31, the charging box 20 may include an upper shell assembly 24 and a hinge mechanism 25 connecting the upper shell assembly 24 and the lower shell assembly 21, so that the charging box 20 can be opened or closed. The charging box 20 further includes a limiting mechanism, which is used to limit the angle at which the upper shell assembly 24 rotates relative to the lower shell assembly 21 when the charging box 20 is in the open state. In other words, the limiting mechanism can limit further relative rotation of the upper shell assembly 24 and the lower shell assembly 21 when the upper shell assembly 24 rotates to a preset angle relative to the lower shell assembly 21. It should be noted that the angle at which the upper shell assembly 24 opens relative to the lower shell assembly 21 can be the angle between the lower surface of the lower shell assembly 21 and the upper surface of the upper shell assembly 24 (see angle α in Figure 27). By providing a limiting mechanism, the angle at which the upper shell assembly 24 opens relative to the lower shell assembly 21 can be limited, thereby reducing the risk of damage to the charging box 20 shell structure caused by excessive rotation of the upper shell assembly 24, as well as problems such as wear on the charging box 20 surface caused by shell abutment.

[0229] In some embodiments, the limiting mechanism is connected to the upper shell assembly 24 and the lower shell assembly 21, respectively, so as to limit the angle at which the upper shell assembly 24 opens relative to the lower shell assembly 21. For example, the limiting mechanism may include two connecting rods, which are hinged to each other and hinged to the upper shell assembly 24 and the lower shell assembly 21, respectively. When the upper shell assembly 24 rotates to a preset angle relative to the lower shell assembly 21, the two connecting rods are in a straight line, thereby limiting the further rotation of the upper shell assembly 24 relative to the lower shell assembly 21. When the charging box 20 changes from an open state to a closed state, the two connecting rods rotate relative to each other, and the part connected to the upper shell assembly 24 and the part connected to the lower shell assembly 21 approach each other. In other words, the two connecting rods will limit the rotation of the upper shell assembly 24 relative to the lower shell assembly 21 to the open state, but will not limit the rotation of the two to the closed state.

[0230] In some embodiments, the limiting mechanism includes a first limiting member 271 and a second limiting member 272. The second limiting member 272 is connected to the upper housing assembly 24 and can move with the upper housing assembly 24. The first limiting member 271 is connected to the lower housing assembly 21 and can move with the lower housing assembly 21. The first limiting member 271 and the second limiting member 272 abut against each other when the upper housing assembly 24 rotates to a preset 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. Optionally, the preset angle ranges from 90 degrees to 110 degrees. If the preset angle is less than 90 degrees, that is, the angle between the upper housing assembly 24 and the lower housing assembly 21 is acute, the upper housing assembly 24 may tend to reclose due to gravity or the elastic member of the hinge mechanism 25, making it difficult for the user to pick up and store the earphones 10. Furthermore, if the preset angle is less than 90 degrees, the user may interfere with the upper housing assembly 24 when picking up and storing the earphones 10, affecting the user experience. If the preset angle is greater than 110 degrees, the angle at which the upper shell assembly 24 opens relative to the lower shell assembly 21 is too large, which increases the strength requirements for the hinge mechanism 25 and the limit mechanism. In addition, if the upper shell assembly 24 is opened at an angle that is too large relative to the lower shell assembly 21, the length of the charging box 20 when opened will be longer. The length of the charging box 20 when opened refers to the distance between the farthest end of the upper shell assembly 24 from the hinge mechanism and the farthest end of the lower shell assembly 21 from the hinge mechanism. For example, in extreme conditions where the charging box 20 is dropped or squeezed, the longer length of the charging box 20 when opened will result in a larger torque on the upper shell assembly 24 and the lower shell assembly 21, increasing the risk of damage to the charging box 20.

[0231] In some embodiments, a slot 247 is provided on the edge of the upper shell assembly 24 near the lower shell assembly 21, and the hinge mechanism 25 includes a hinge 253 bridging the two ends of the slot 247, so that the upper shell assembly 24 rotates relative to the lower shell assembly 21 around the hinge 253. In some embodiments, the above-mentioned preset angle is less than the angle at which the upper shell assembly 24 is opened relative to the lower shell assembly 21 when the groove edge of the slot 247 abuts the outer wall of the lower shell assembly 21. It can be understood that the slot 247 can facilitate the rotation of the upper shell assembly 24 relative to the lower shell assembly 21. When the groove edge of the slot 247 abuts the outer wall of the lower shell assembly 21, the rotation of the upper shell assembly 24 relative to the lower shell assembly 21 can also be limited. However, due to the material and structure of the upper shell assembly 24 and the lower shell assembly 21, the groove edge abutment limiting method requires a high structural strength of the shell of the charging box 20, which increases the cost of the process and materials. By adding a limiting mechanism and limiting the opening angle of the upper shell component 24 relative to the lower shell component 21, the limiting strength can be increased, while the requirements for the structural strength of the charging box can be reduced, thereby reducing costs.

[0232] Furthermore, when the groove edge of the slot 247 abuts the outer wall of the lower shell assembly 21, pressure is applied to the outer wall of the lower shell assembly 21, causing indentations to easily form on the outer wall of the lower shell assembly 21, affecting the appearance. Moreover, the abutting area where the indentation forms on the outer wall of the lower shell assembly 21 will experience stress concentration when subjected to force, significantly affecting the strength of the lower shell assembly 21. To avoid stress concentration in the abutting area, a preset angle can be set that is smaller than the angle at which the upper shell assembly 24 opens relative to the lower shell assembly 21 when the groove edge of the slot 247 abuts the outer wall of the lower shell assembly 21. This allows the upper shell assembly 24 to be opened relative to the lower shell assembly 21 to the preset angle, and further rotation will be limited by the limiting mechanism, thereby preventing the groove edge of the slot 247 from abutting against the outer wall of the lower shell assembly 21. For example, when the edge of the slot 247 abuts against the outer wall of the lower shell assembly 21, the upper shell assembly 24 and the lower shell assembly 21 can be opened to an angle of 120 degrees, and the preset angle is 110 degrees. When the upper shell assembly 24 is opened to 110 degrees relative to the lower shell assembly 21, the limiting mechanism restricts the further rotation of the upper shell assembly 24, thereby avoiding the abutment of the edge of the slot 247 against the outer wall of the lower shell assembly 21.

[0233] In some embodiments, the rotating shaft mechanism 25 includes a first fixing seat 256 mounted on the lower housing assembly 21 and a second fixing seat 257 mounted on the upper housing assembly 24. The rotating shaft 253 passes through the first fixing seat 256 and the second fixing seat 257. The provision of the first fixing seat 256 and the second fixing seat 257 can increase the strength of the rotating shaft mechanism 25. The limiting mechanism includes a first limiting member 271 connected to the first fixing seat 256 and a second limiting member 272 connected to the second fixing seat 257. When the upper housing assembly 24 rotates to a predetermined angle relative to the lower housing assembly 21, the first limiting member 271 and the second limiting member 272 abut against each other, thereby limiting further rotation of the upper housing assembly 24 relative to the lower housing assembly 21.

[0234] Optionally, in conjunction with Figures 28 and 29, the extension direction of the first limiting member 271 and the extension direction of the second limiting member 272 are perpendicular to each other. This arrangement can increase the success rate of the abutment between the first limiting member 271 and the second limiting member 272. In some embodiments, the extension direction of one of the first limiting member 271 and the second limiting member 272 is set along the axial direction of the rotating shaft 253, and the extension direction of the other is set along the radial direction of the rotating shaft 253. In this way, the relative rotation of the first limiting member 271 and the second limiting member 272 can match the rotation of the upper shell assembly 24 and the lower shell assembly 21 relative to the rotating shaft 253, so that the first limiting member 271 and the second limiting member 272 can limit the rotation of the upper shell assembly 24 and the lower shell assembly 21 relative to the rotating shaft 253.

[0235] In some embodiments, the first limiting member 271 and the first fixing seat 256 are integrally formed metal parts. Or the second limiting member 272 and the second fixing seat 257 are integrally formed metal parts. Or the first limiting member 271 and the first fixing seat 256 are integrally formed metal parts, and the second limiting member 272 and the second fixing seat 257 are integrally formed metal parts. The first fixing seat 256 and the second fixing seat 257 are configured as metal parts so that both have a small volume while having sufficient strength, thereby reducing the space occupied by the charging box 20 and helping to reduce the volume of the charging box 20. The first limiting member 271 and the first fixing seat 256 are integrally formed, or the second limiting member 272 and the second fixing seat 257 are integrally formed, so that when the first limiting member 271 and the second limiting member 272 resist the force, their torque is transmitted to the charging box 20 through the first fixing seat 256 or the second fixing seat 257, and the connection structure between the first fixing seat 256 and the second fixing seat 257 and the charging box 20 has a high connection strength. Therefore, the integral formation of the first limiting member 271 and the first fixing seat 256 or the integral formation of the second limiting member 272 and the second fixing seat 257 can increase the stability of the first limiting member 271 and the second limiting member 272 when they abut against each other.

[0236] As an example, in conjunction with Figures 30-32, one of the first limiting member 271 and the second limiting member 272 is provided with a limiting groove 2721. When the charging box 20 is opened, the other of the first limiting member 271 and the second limiting member 272 cooperates with the limiting groove 2721 to limit the rotation of the upper shell assembly 24 relative to the lower shell assembly 21. In some embodiments, the second limiting member 272 can be provided with a limiting groove 2721. The first limiting member 271 extends into the limiting groove 2721 after the upper shell assembly 24 is opened to a first angle relative to the lower shell assembly 21. The first angle is less than a preset angle. When the upper shell assembly 24 rotates to a preset angle relative to the lower shell assembly 21, the first limiting member 271 abuts against the groove wall of the limiting groove 2721. The abutment between the first limiting member 271 and the limiting groove 2721 enables the groove wall of the limiting groove 2721 to limit the first limiting member 271 when the limiting mechanism is subjected to forces in other directions, thereby increasing the strength and reliability of the limiting mechanism. When the charging box 20 rotates from the open state to the closed state, the first limiting member 271 can escape from the limiting groove 2721, thereby reducing the influence of the limiting mechanism on the charging box 20 when it is closed. In other embodiments, the first limiting member 271 can be provided with a limiting groove 2721, and the second limiting member 272 extends into the limiting groove 2721 after the upper shell assembly 24 is opened to a first angle relative to the lower shell assembly 21.

[0237] Furthermore, when the charging box 20 is in the open state, the angle between the extension direction of the first limiting member 271 and the extension direction of the second limiting member 272 is an obtuse angle. This arrangement enables the second limiting member 272 or the first limiting member 271 to smoothly extend into and out of the limiting groove 2721 even when the length is shorter. If the extension direction of the first limiting member 271 and the extension direction of the second limiting member 272 are a right angle or an acute angle, the limiting groove 2721 needs to be longer to ensure that the first limiting member 271 or the second limiting member 272 can be smoothly disengaged, which increases the overall volume of the rotating shaft mechanism 25 and takes up more space in the charging box 20.

[0238] In some embodiments, the connection and cooperation between the lower shell assembly 21, the limiting mechanism, and the rotating shaft mechanism 25 can be described as follows: The interior of the lower shell assembly 21 is provided with two first support portions 215 spaced axially along the rotating shaft 253 and a first reinforcement portion 216 located between the two first support portions 215. The first reinforcement portion 216 can refer to a reinforcing rib structure or a structure thicker than other side walls of the charging box 20. The first reinforcement portion 216 can enhance the structural strength of the charging box 20, thereby enabling the charging box 20 to stably support the rotating shaft mechanism 25 and the limiting mechanism. The two first support portions 215 are respectively provided with a first embedding groove 2151. The first fixing seat 256 includes a first plate-shaped body 2561. The first plate-shaped body 2561 is inserted into the first embedding groove 2151 of the two first support portions 215 toward the lower edge of the lower shell assembly 21, and the first plate-shaped body 2561 abuts against the first reinforcement portion 216. The first reinforcement portion 216 can improve the structural strength of the lower shell assembly 21. On the other hand, the first fixing seat 256 cooperates with the first reinforcement portion 216 to increase the strength of the coupling between the rotating shaft mechanism 25 and the lower shell assembly 21, thereby facilitating the assembly of the rotating shaft mechanism 25 with the lower shell assembly 21. Optionally, the lower shell assembly 21 includes a lower shell body 213 and a lower shell lining 214, with the first support portion 215, the first reinforcement portion 216, and the first fixing seat 256 being disposed between the lower shell body 213 and the lower shell lining 214.

[0239] In some embodiments, the first fixing seat 256 further includes two first extensions 2562, which extend from the first plate-shaped body 2561 toward the first reinforcement 216. The first reinforcement 216 is located between the two first extensions 2562. The first extension 2562 protrudes from the upper edge of the first plate-shaped body 2561 and is provided with a first shaft hole for the shaft 253 to pass through. The first stopper 271 is located at one end of the first extension 2562 away from the first plate-shaped body 2561. This arrangement can increase the stability of the cooperation between the first fixing seat 256 and the first reinforcement 216, and ensure that the first stopper 271 and the first fixing seat 256 have sufficient structural strength to increase the stability of the charging box 20 when it is in the open state.

[0240] In some embodiments, the connection and coordination between the upper housing assembly 24, the limiting mechanism, and the rotating shaft mechanism 25 can be described as follows. The upper housing assembly 24 is internally provided with two second support portions 243 spaced axially along the rotating shaft 253. The two second support portions 243 are provided with second inlay grooves 2431. The second fixing seat 257 includes a second plate-shaped body 2571 and two second extensions 2572. The second plate-shaped body 2571 is inserted into the second inlay grooves 2431 of the two second support portions 243, facing the upper edge of the upper housing assembly. The second extensions 2572 are connected to the second plate-shaped body 2571 and extend toward the slots 247. The second extensions 2572 are provided with a second rotating shaft hole for the rotating shaft 253 to pass through. The first limiting member 271 is provided on the second extensions 2572. This arrangement can enhance the strength of the connection between the rotating shaft mechanism 25 and the upper housing assembly 24 and facilitate assembly of the rotating shaft mechanism 25 with the upper housing assembly 24.

[0241] Furthermore, the interior of the upper housing assembly 24 is provided with second reinforcement portions 246 located at both ends of the slot 247. The second extension portion 2572 includes a first sub-extension portion 2572a located between the two second reinforcement portions 246 and a second sub-extension portion 2572b connected to the first sub-extension portion 2572a and extending along the axial direction of the rotation shaft 253. The second sub-extension portion 2572b is further connected to the second reinforcement portion 246. For example, the second sub-extension portion 2572b can be engaged with the second reinforcement portion 246 by means of fasteners such as screws or rivets, thereby increasing the strength and stability of the engagement between the first fixing seat 256 and the upper housing assembly 24.

[0242] As an example, with reference to FIG22 , the charging box 20 may include a magnetic member 261 disposed within the lower shell assembly 21 and a permanent magnet 262 disposed within the upper shell assembly 24. For example, the magnetic member 261 is fixed to the inner side of the lower shell lining 214 facing away from the upper shell assembly 24, and the permanent magnet 262 is fixed to the inner side of the upper shell lining 242 facing away from the lower shell assembly 21. This helps to reduce the distance between the magnetic member 261 and the permanent magnet 262 when the charging box 20 is closed. A Hall sensor 223 is provided on the main control circuit board 221, that is, the Hall sensor 223 is directly fixed to the main control circuit board 221, and the Hall sensor 223 is disposed adjacent to the magnetic member 261. In this way, when the charging box 20 switches between the open state and the closed state, the permanent magnet 262 magnetizes the magnetic member 261 to varying degrees, and the Hall sensor 223 senses the magnetic field of the magnetic member 261 to detect the aforementioned open state or the aforementioned closed state. In other words, in the aforementioned covered state, the magnetic conductive member 261 allows the magnetic field generated by the permanent magnet 262 to be more concentrated toward the Hall sensor 223 , which is beneficial to increasing the reliability of the detection of the Hall sensor 223 and reducing the volume of the permanent magnet 262 .

[0243] Through the above method, compared with the related technology in which the Hall sensor 223 is fixed on the inner side of the lower shell lining 214 and connected to the main control circuit board 221 through a wire, this technical solution fixes the Hall sensor 223 directly on the main control circuit board 221, which is conducive to simplifying the wiring of the charging box 20.

[0244] As an example, in conjunction with Figures 22 and 23, the orthographic projections of each contoured groove 211 and the magnetic conductive member 261 on the main control circuit board 221 can be staggered to allow the magnetic conductive member 261 to be as close to the permanent magnet 262 as possible after the charging box 20 is closed. For example: when viewed from directly above the charging box 20, the magnetic conductive member 261 is located at any one of the first position (such as shown in the dotted box P1 in Figure 23), the second position (such as shown in the dotted box P2 in Figure 23), and the third position (such as shown in the dotted box P3 in Figure 23) on the periphery of the two contoured grooves 211.

[0245] As an example, in conjunction with Figure 23, when observing from directly above the charging box 20, the two contoured grooves 211 can be mirror-symmetrical about an axis of symmetry (for example, as shown by the dotted line SA in Figure 23), so as to allow the two earphones 10 to be placed neatly in the charging box 20. Among them, the magnetic conductive member 261 can be located on the axis of symmetry SA and away from the hinge mechanism 25. In this way, it is beneficial to increase the difference in the magnetic field sensed by the Hall sensor 223 to the magnetic conductive member 261 in the above-mentioned open state and the above-mentioned closed state, thereby increasing the reliability of the detection of the Hall sensor 223. It is worth noting that the axis of symmetry SA can be parallel to the line segment OP1OP2, and the axis of symmetry SA can also coincide with the line segment OP1OP2.

[0246] As an example, in conjunction with Figure 22, the positive projections of the magnetic conductive part 261 and the Hall sensor 223 on the main control circuit board 221 can at least partially overlap, which is conducive to reducing the magnetic gap between the magnetic conductive part 261 and the Hall sensor 223, so that the magnetic field generated by the permanent magnet 262 is more concentrated toward the Hall sensor 223, especially in the above-mentioned covered state. Among them, the Hall sensor 223 can be set on the side of the main control circuit board 221 facing the magnetic conductive part 261 to reduce the magnetic gap between the magnetic conductive part 261 and the Hall sensor 223; the Hall sensor 223 and the magnetic conductive part 261 can be spaced apart in the normal direction of the main control circuit board 221 to reduce the risk of collision between the magnetic conductive part 261 and the Hall sensor 223, especially under extreme working conditions such as the charging box 20 falling.

[0247] As an example, in combination with Figure 22, in the above-mentioned covered state, the positive projections of the permanent magnet 262 and the magnetic conductive part 261 on the main control circuit board 221 can at least partially overlap, which is conducive to reducing the magnetic gap between the permanent magnet 262 and the magnetic conductive part 261, so that the magnetic field generated by the permanent magnet 262 is more concentrated on the Hall sensor 223, especially in the above-mentioned covered state.

[0248] As an example, with reference to Figure 33 (Figure 33 is a schematic diagram of the cross-sectional structure of the charging box 20 when closed), the charging box 20 may include a lower shell component 21, an upper shell component 24, a main control circuit board 221 and a magnetic attraction structure disposed in the lower shell component 21, and an upper shell magnet disposed in the upper shell component 24. The upper shell magnet may be the aforementioned permanent magnet 262. A Hall sensor 223 may be disposed in the lower shell component 21, and the Hall sensor 223 may be electrically connected to the main control circuit board 221. The magnetic attraction structure is used to maintain the earphones 10 in the charging box 20 by magnetic attraction. On this basis, during the closing process of the upper shell component 24, the Hall sensor 223 can further detect the closing of the upper shell component 24 by detecting the approach of the upper shell magnet, thereby realizing the closure detection of the charging box 20. The type of the Hall sensor 223 may be a unipolar Hall switch triggered by the S pole or a unipolar Hall switch triggered by the N pole, without specific limitation herein. The following application uses the Hall sensor 223 as an example of the S pole triggered type. When the Hall sensor 223 is an N-pole triggered type, the principles are the same and will not be further described. It is understood that those skilled in the art can, based on the relevant principles described later when the Hall sensor 223 is an S-pole triggered type, adjust the relevant magnetic pole characteristics to achieve the same or similar technical effects when the Hall sensor 223 is an N-pole triggered type. Therefore, the technical solution when the Hall sensor 223 is an N-pole triggered type is also included in the scope of protection of this application.

[0249] It should be noted that the Hall sensor 223 has two output states, which can output a high level and a low level respectively. The Hall sensor 223 has a sensing surface. The magnetic field at the Hall sensor 223 is perpendicular to the sensing surface of the Hall sensor 223, and the component in the positive direction of the sensing surface will act on the carriers of the Hall sensor 223, causing the carriers to deflect, thereby changing the output state of the Hall sensor 223. The specific principle can at least refer to the existing technology and will not be repeated here. Taking the Hall sensor 223 as an example of the S-pole triggered type, as the S-pole of the magnet gradually approaches the Hall sensor 223, the component of the magnetic field generated by the magnet at the Hall sensor 223 perpendicular to the positive direction of the sensing surface of the Hall sensor 223 gradually increases. When it increases to exceed a certain threshold (for example, when the magnetic field strength is 2mT or 3mT), the Hall sensor 223 changes from a high level to a low level.

[0250] In the related art, the charging box 20 also includes an auxiliary magnet that cooperates with the earphone 10 in the magnetic structure or assists in closing the charging box 20. In addition to the magnetic field acting on the Hall sensor when the upper shell magnet approaches, the magnetic field of the magnetic structure and auxiliary magnet and other components in the charging box 20 will also have a certain impact on the Hall sensor. For example, the magnetic structure set in the lower shell component 21 will affect the Hall sensor, but due to its relatively small volume, the impact on the Hall sensor 223 can be ignored. In other words, the magnetic field strength of the magnetic structure acting on the Hall sensor 223 cannot reach the threshold for changing the output state of the Hall sensor 223 (that is, the presence or absence of the magnetic structure will not change the output state of the Hall sensor 223). In this way, the reason for the change in the state of the Hall sensor 223 is mainly due to the approach of the upper shell magnet. Taking the Hall sensor 223 as an S-pole triggered type as an example, when the volume of the magnetic structure is small, the output state of the Hall sensor 223 will not be changed by the magnetic field of the magnetic structure. When the upper housing assembly 24 is closed, the S pole of the upper housing magnet approaches the Hall sensor 223. The Hall sensor 223 is affected by the magnetic field of the upper housing magnet. When the magnetic field strength reaches the threshold for changing the output state, its output state changes. For example, the output state of the Hall sensor 223 may change from a high level to a low level. The circuit in the main control circuit board can be designed to detect when the Hall sensor 223 outputs a low level and determine that the charging case 20 is closed.

[0251] In some embodiments, since the smaller magnetic structure has a weak suction force on the earphone 10, it is not conducive to the placement of the earphone 10 in the charging box 20. It is necessary to increase the volume of the magnetic structure to enhance the suction force on the earphone 10, thereby improving the stability of the placement of the earphone 10. For example, the first magnetic structure can use a magnet with a diameter of 8-15 mm and a thickness of 2-4 mm. However, after the volume of the magnetic structure is increased, the influence of the magnetic field generated by the magnetic structure on the Hall sensor 223 cannot be ignored, that is, the magnetic field strength of the magnetic structure at the Hall sensor 223 has reached the threshold value for the Hall sensor 223 to change the output state, resulting in the magnetic field of the magnetic structure being able to change the output state of the Hall sensor 223 when the charging box 20 is not closed. For example, when the upper shell magnet is set with the S pole facing downward, if the magnetic field of the magnetic attraction structure is perpendicular to the sensing surface of the Hall sensor 223 and the component thereof is oriented in the positive direction of the sensing surface and exceeds the threshold value for changing the output state of the Hall sensor 223, then when the upper shell magnet approaches the Hall sensor 223, since the components of the upper shell magnet and the magnetic attraction structure at the Hall sensor 223 that are perpendicular to the sensing surface are in the same direction, the magnetic field at the Hall sensor 223 is enhanced, but the output state of the Hall sensor 223 cannot be changed, resulting in failure of the opening and closing box detection. In order to improve the above technical problems, the present application may provide the following embodiments.

[0252] In some embodiments, the coordination relationship among the magnetic attraction structure, the upper shell magnet, and the Hall sensor 223 can be configured such that when the upper shell assembly 24 is in an open state relative to the lower shell assembly 21, the Hall sensor 223 is in a first state under the action of the magnetic field of the magnetic attraction structure. When the upper shell assembly 24 is in a closed state relative to the lower shell assembly 21, the upper shell magnet offsets the magnetic field effect of the magnetic attraction structure on the Hall sensor 223, causing the Hall sensor 223 to switch to a second state different from the first state. The first state refers to one of the states in which the Hall sensor 223 outputs a high level or a low level, and the second state refers to another state different from the first state, in which the Hall sensor 223 outputs a high level or a low level. In other words, by configuring the coordination relationship among the magnetic attraction structure, the upper shell magnet, and the Hall sensor 223, the Hall sensor 223 can change its output state under the action of the upper shell magnet when the charging case 20 is closed.

[0253] The above embodiment is also illustrated using a unipolar Hall switch triggered by the S pole as an example. When the magnetic field of the magnetic structure at the Hall sensor 223 reaches the threshold at which the Hall sensor 223 changes its output state (compared to the state when the Hall sensor 223 is completely unaffected by the magnetic field, i.e., the presence or absence of the magnetic structure affects the output state of the Hall sensor 223), for example, when the magnetic field is greater than 3mT, the Hall sensor 223 is in the first state and outputs a low level. In this case, to ensure the effectiveness of the closure detection, when the upper shell assembly 24 is closed, the upper shell magnet approaches the Hall sensor 223, which needs to change the magnetic field at the Hall sensor 223 so that the Hall sensor 223 is in the second state, i.e., outputs a high level. Thus, by configuring the circuit in the main control circuit board to determine that the charging case 20 is closed when the Hall sensor 223 outputs a high level, effective closure detection can be achieved. Specifically, when the upper shell assembly 24 is in the closed state relative to the lower shell assembly 21, the polarity of the magnetic pole of the magnetic structure facing the upper shell assembly 24 is opposite to the polarity of the magnetic pole of the upper shell magnet facing the lower shell assembly 21. For example, if the south pole of the magnetic structure faces the upper housing assembly 24, and the angle between the line connecting the magnetic structure and the Hall sensor 223 and the sensing surface of the Hall sensor 223 is less than 45 degrees, then the component of the magnetic structure perpendicular to the sensing surface of the Hall sensor 223 at the Hall sensor 223 is oriented in the positive direction of the sensing surface, thereby triggering the Hall sensor 223 to the first state, i.e., a low level. The north pole of the upper housing magnet is positioned toward the lower housing assembly 21 when the charging case 20 is closed. With this arrangement, when the charging case 20 is closed, the component of the upper housing magnet perpendicular to the sensing surface at the Hall sensor 223 is oriented in the negative direction of the sensing surface. In other words, when the charging case 20 is closed, the magnetic fields of the upper housing magnet and the magnetic structure at the Hall sensor 223 cancel each other out, causing the component of the combined magnetic field of the magnetic structure and the upper housing magnet at the Hall sensor 223 perpendicular to the sensing surface to be less than the triggering threshold of the Hall sensor 223, or even the component of the combined magnetic field perpendicular to the sensing surface to be oriented in the negative direction of the sensing surface, thereby triggering the Hall sensor 223 to the second state, i.e., a high level. The main control circuit board 221 can detect whether the charging box 20 is closed by detecting the output status of the Hall sensor 223. Through the above method, the charging box 20 can successfully realize the closed box detection even when the Hall sensor 223 is interfered by the magnetic attraction structure.

[0254] In some embodiments, the magnetic field distribution of the upper shell magnet at the Hall sensor 223 can be adjusted to match the magnetic field distribution of the magnetic attraction structure at the Hall sensor 223. This allows the upper shell magnet to change the direction of the total magnetic field acting on the Hall sensor 223 when it approaches the Hall sensor 223. The difference in the magnetic field distribution of the upper shell magnet at the Hall sensor 223 can be reflected by the difference in the physical parameters of the upper shell magnet.

[0255] In some embodiments, the diameter of the upper shell magnet may be in the range of 4-6 mm, and the thickness of the upper shell magnet may be in the range of 1-8 mm. For example, referring to Figure 34 (Figure 34 is a schematic diagram of the simulation results of the magnetic field at the Hall sensor 223 of upper cover magnets of different thicknesses), Figure 34 (a) is a schematic diagram of the simulation results of the magnetic field at the Hall sensor 223 of the charging box 20 in the open state and the closed state when the earphones 10 are not placed. Figure 34 (b) is a schematic diagram of the simulation results of the magnetic field at the Hall sensor 223 of the charging box 20 in the open state and the closed state when the earphones 10 are placed. The positive and negative values ​​in Figure 34 represent the positive and negative directions of the total magnetic field near the Hall sensor relative to the sensing surface, respectively. For example, if the magnetic structure uses a permanent magnet with a diameter of 10mm and a thickness of 2.5mm, and the earphones 10 are not placed in the charging box 20, the magnetic structure will generate a magnetic field at the Hall sensor 223 that is oriented toward the positive direction of the sensing surface of the Hall sensor 223 and has a magnetic field strength of 6.5mT. At this time, the Hall sensor 223 is affected by the magnetic field of the magnetic structure and is in a low-level state. After the upper shell assembly 24 is closed, the upper shell magnet will offset the magnetic field generated by the magnetic structure at the Hall sensor 223 and flip the magnetic field there, so that the magnetic field direction at the Hall sensor 223 is toward the negative direction of the sensing surface, and the magnetic field strength becomes 5.1mT. At this time, the Hall sensor 223 is in a high-level state. When the upper cover magnet size is different, its effect on the Hall sensor 223 is also different. For example, when the diameter of the upper shell magnet is 5mm, as the thickness of the upper shell magnet increases, the magnetic field strength at the Hall sensor 223 after flipping gradually increases.

[0256] In some embodiments, the earphones 10 are further provided with a first magnetic member that cooperates with the magnetic structure. The first magnetic member is configured such that when the earphones 10 are contained in the charging case 20 and the upper shell assembly 24 is in an open state, the Hall sensor 223 is in a first state. The first magnetic member is configured such that when the earphones 10 are contained in the charging case 20 and the upper shell assembly 24 is in a closed state, the Hall sensor 223 is in a second state. When the earphones 10 are placed in the charging case 20, the first magnetic member provided in the earphones 10 will also have an effect on the magnetic field at the Hall sensor 223 that is different from the magnetic structure. The component of the first magnetic member perpendicular to the sensing surface at the Hall sensor 223 may be oriented in the positive direction or the negative direction of the sensing surface. However, the first magnetic member is configured to only affect the magnitude of the magnetic field perpendicular to the sensing surface at the Hall sensor 223, and will not affect the direction of the total magnetic field at that location. In other words, the placement of the earphones 10 will not affect the output state of the Hall sensor 223. For example, Figure 34(b) shows a schematic diagram of simulation results when the earphones 10 are in the charging case 20. The schematic diagram is made when the magnetic attraction structure adopts a permanent magnet with a diameter of 10mm and a thickness of 2.5mm, and the upper shell magnet adopts a permanent magnet with a diameter of 5mm and a thickness of 2mm. When the charging box 20 has earphones 10, 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 7.1mT. At this time, the Hall sensor 223 outputs a low level. After the upper shell assembly 24 is closed, the upper shell magnet flips 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 4.5mT. At this time, the Hall sensor 223 outputs a high level.

[0257] In some embodiments, the earphones 10 further include a second magnetic member independent of the first magnetic member, and the magnetic structure includes a second magnetic structure that magnetically cooperates with the second magnetic member. The first magnetic structure 231 and the first magnetic member within the earphones 10 can form a first magnetic matching pair, and the second magnetic structure 232 and the second magnetic member within the earphones 10 can form a second magnetic matching pair. The first and second magnetic matching pairs ensure one-to-one contact between the electrode terminals 222 and 151. Thus, since the electrode terminals 222 and 151 are positioned between the first and second magnetic matching pairs after pairing, the contact between the earphones 10 and the charging case 20 is improved. The second magnetic member and the second magnetic structure are smaller in size than the first magnetic member and the first magnetic structure 231, and the distance between the Hall sensor 223 and the first magnetic structure 231 is smaller than the distance between the Hall sensor 223 and the second magnetic structure. This arrangement can reduce the impact of the second magnetic structure on the magnetic field at the Hall sensor 223, thereby reducing interference with the output state of the Hall sensor 223.

[0258] In some embodiments, a magnetic permeable member 261 is further provided within the lower shell assembly 21. The magnetic permeable member 261 can change the magnetic field distribution of the upper shell magnet, thereby converging the magnetic field of the upper shell magnet to increase the influence of the upper shell magnet on the Hall sensor 223. When the upper shell assembly 24 is closed, as the upper shell magnet gradually approaches the magnetic permeable member 261, the magnetic field of the upper shell magnet will magnetize the magnetic permeable member 261, and the magnetic permeable member 261 can affect the magnetic field distribution at the Hall sensor 223. The magnetic field generated by the magnetic permeable member 261 further offsets the magnetic field effect of the magnetic attraction structure on the Hall sensor 223, causing the Hall sensor 223 to switch to a second state different from the first state. During the process of switching between the open state and the closed state of the charging case 20, the upper shell magnet will magnetize the magnetic permeable member 261 to varying degrees, and the Hall sensor 223 senses the magnetic field of the magnetic permeable member 261 to detect the aforementioned open state or the aforementioned closed state. In other words, in the aforementioned closed state, the magnetic conductive member 261 causes the magnetic field generated by the upper shell magnet to converge more toward the Hall sensor 223, which helps to increase the reliability of the Hall sensor 223 detection and reduce the volume of the upper shell magnet. Through the above method, compared with the related art in which the Hall sensor 223 is fixed on the inner side of the lower shell lining 214 and connected to the main control circuit board 221 through a wire, this technical solution can directly fix the Hall sensor 223 on the main control circuit board 221, which helps to simplify the wiring of the charging box 20.

[0259] In some embodiments, the distance from the Hall sensor 223 to the magnetic member 261 can be set to be smaller than the distance from the Hall sensor 223 to the magnetic structure, so that the magnetic field collected by the magnetic member 261 can be closer to the Hall sensor 223. At the same time, the magnetic member 261 can collect a limited amount of magnetic field from the magnetic structure to enhance the effect of the magnetic field collected by the magnetic member 261 on the Hall sensor 223, while reducing the influence of the magnetic field of the magnetic structure, which is beneficial to the reversal of the magnetic field at the Hall sensor 223.

[0260] In some embodiments, in the thickness direction of the charging box 20, when the upper shell assembly 24 is in a closed state, the orthographic projections of the upper shell magnet and the magnetic conductive member 261 in the thickness direction can be set to at least partially overlap, so that the distance between the upper shell magnet and the magnetic conductive member 261 in the first reference direction or the second reference direction can be adjusted. By shortening the distance between the upper shell magnet and the magnetic conductive member 261 in the first reference direction or the second reference direction, it is beneficial to reduce the magnetic gap between the upper shell magnet and the magnetic conductive member 261, so that the magnetic field generated by the permanent magnet 262 is more concentrated toward the Hall sensor 223, especially in the above-mentioned closed state, so that the upper shell magnet can generate a magnetic field of sufficient strength at the Hall sensor 223 even with a small volume. Optionally, when the upper shell assembly 24 is in a closed state, the centroids of the orthographic projections of the upper shell magnet and the magnetic conductive member 261 in the thickness direction can be set to coincide.

[0261] In some embodiments, when the upper shell assembly 24 is in a closed state, the distance between the upper shell magnet and the magnetic permeable member 261 in the thickness direction can be adjusted by setting the relative position of the magnetic permeable member 261 and the upper shell magnet installed in the charging box 20. By shortening the distance between the upper shell magnet and the magnetic permeable member 261 in the thickness direction, it is beneficial to reduce the magnetic gap between the upper shell magnet and the magnetic permeable member 261, thereby enhancing the magnetic permeable member 261's ability to collect the magnetic field of the upper shell magnet, thereby causing the magnetic field generated by the permanent magnet 262 to be more concentrated toward the Hall sensor 223. In this way, when the charging box 20 is closed, the upper shell magnet can have a smaller volume while ensuring that the upper shell magnet can change the output state of the Hall sensor 223, thereby reducing the volume of the charging box 20. Optionally, when the upper shell assembly 24 is in a closed state, the distance between the magnetic permeable member 261 and the surface of the upper shell magnet that is close to each other can be set to be less than or equal to 5 mm. Such a configuration can create a certain gap between the upper shell magnet and the magnetic conductive member, so that the side walls of the upper shell assembly and the side walls of the lower shell assembly (i.e., the aforementioned upper shell lining 242 and lower shell lining 214) can separate and cover the upper shell magnet and the magnetic conductive member 261, so that the two do not need to be exposed between the upper shell assembly 24 and the lower shell assembly 21, and no additional holes are required in the upper shell lining 242 and the lower shell lining 214, which is beneficial to increase the structural strength of the charging box 20 and also make the charging box 20 more beautiful. In other embodiments, when the upper shell assembly 24 is in a closed state, the end of the magnetic conductive member 261 away from the Hall sensor 223 can be set to directly abut the bottom surface of the upper shell magnet, thereby increasing the magnetization of the magnetic conductive member 261 by the upper shell magnet, so that the magnetic field of the upper shell magnet can be more concentrated on the Hall sensor 223.

[0262] Along the thickness of the charging case 20, the lower shell assembly 21 is provided with contoured grooves 211 for accommodating the earphones 10. The orthographic projection of the contoured grooves 211 on the main control circuit board 221 is offset from the orthographic projections of the Hall sensor 223 and the upper shell magnet on the main control circuit board 221. This arrangement allows the Hall sensor 223 to be placed outside the contoured grooves 211, bringing it closer to the upper shell magnet, which helps the upper shell magnet change the output state of the Hall sensor 223.

[0263] Optionally, an auxiliary magnet is further disposed within the lower housing assembly 21. The auxiliary magnet can, for example, assist in the magnetic attraction between the upper housing assembly 24 and the lower housing assembly 21, or assist in the engagement of the earphone 10 with the contoured groove 211. The auxiliary magnet is configured such that when the upper housing assembly 24 is in an open position, the Hall sensor 223 is in a first state; and when the upper housing assembly 24 is in a closed position, the Hall sensor 223 is in a second state. In other words, the auxiliary magnet does not affect the output state of the Hall sensor 223 in a manner distinct from that of the magnetic attraction structure.

[0264] The above are only some embodiments of the present application and do not limit the scope of protection of the present application. Any equivalent device or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly used in other related technical fields, are also included in the scope of patent protection of this application.

Claims

1. A charging box for earphones, characterized in that: The earphone includes a movement module and a hook-shaped structure connected to the movement module, and the charging box includes a lower shell component, which is provided with a contoured groove for accommodating the earphone; the lower shell component is provided with a first electrode terminal exposed in the contoured groove, and the extension direction of the first electrode terminal is inclined relative to the thickness direction of the charging box.

2. The charging box according to claim 1, characterized in that: An angle between an extension direction of the first electrode terminal and a thickness direction of the charging box is between 10 degrees and 45 degrees.

3. The charging box according to claim 1 or 2, characterized in that: The contoured groove includes a first contoured groove area corresponding to the core module and a second contoured groove area corresponding to the hook-shaped structure, and the first electrode terminal is exposed in the second contoured groove area.

4. The charging box according to claim 3, characterized in that: The hook structure includes an elastic portion and a hard portion connecting the elastic portion and the core module. The region of the contoured groove accommodating the core module and the region accommodating the hard portion are at least partially inclined to each other.

5. The charging box according to claim 3 or 4, characterized in that: The earphone includes a second electrode terminal. When the earphone is accommodated in the contoured groove, the second electrode terminal is connected to the first electrode terminal. The depth of the first contoured groove gradually increases in a direction away from the first electrode terminal.

6. The charging box according to claim 4 or 5, characterized in that: The first electrode terminal is exposed at one end of the second profiling groove region close to the first profiling groove region, and the depth of the region of the second profiling groove region accommodating the hard portion gradually increases in a direction away from the first profiling groove region.

7. The charging box according to claim 5 or 6, characterized in that: A first supporting platform is provided at the bottom of the contoured groove, the first electrode terminal is provided on the first supporting platform, the earphone is provided with a second supporting platform, the second electrode terminal is provided on the second supporting platform, and when the earphone is accommodated in the contoured groove, the second supporting platform abuts against the first supporting platform.

8. The charging box according to claim 7, characterized in that: The contact surface between the first supporting platform and the second supporting platform is a plane, and the normal direction of the contact surface is inclined relative to the thickness direction of the charging box.

9. The charging box according to claim 8, characterized in that: An extending direction of the first electrode terminal is parallel to a normal direction of contact surfaces between the first supporting platform and the second supporting platform.

10. The charging box according to claim 5, characterized in that: The normal direction of the inner side surface of the core module and the extending direction of the second electrode terminal are arranged obliquely to each other.

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