Charging case for headphones

Abstract

System comprising a charging case and headphones, characterized in that the system includes: Headphones, each headphone comprising a core module and a hook structure connected to the core module; a charging box comprising a lower housing arrangement provided with a profiled recess for receiving the headphones, wherein the profiled recess comprises a first profiled recess area corresponding to the core module and a second profiled recess area corresponding to the hook structure; and wherein, in an extension direction of the hook structure, a clearance between a part of the hook structure facing away from the core module and a side wall of the second profiled recess area is larger than a clearance between the core module and a side wall of the first profiled recess area.

Description

TECHNICAL AREA

[0001] The present application relates to the technical field of electronic devices, in particular a charging box for headphones. STATE OF THE ART

[0002] With the increasing popularity of electronic devices, they have become indispensable communication and entertainment tools in everyday life. People's demands on electronic devices have also steadily risen. Headphones and similar electronic devices are widely used in everyday life. They can be used in conjunction with devices such as mobile phones and computers to provide the user with a fantastic audio experience. Depending on their operating principle, headphones can generally be divided into air conduction headphones and bone conduction headphones. Depending on how the user wears the headphones, they can also be generally divided into the following categories: headset headphones, earhook headphones, and in-ear headphones.Depending on the interaction between the headphones and electronic devices, headphones can generally be further divided into wired and wireless headphones. Furthermore, in situations such as insufficient battery power, non-use, and the like, the headphones can be stored in a suitable charging case to facilitate charging and storage. Currently, a technical problem exists: the success rate when inserting the headphones into the charging case is low. REVELATION OF THE INVENTION

[0003] The present application mainly provides a charging case for headphones, each headphone comprising a core module and a hook structure connected to the core module. The charging case includes a lower housing assembly. The lower housing assembly is provided with a profiled recess for receiving the headphones, comprising a first profiled recess area corresponding to the core module and a second profiled recess area corresponding to the hook structure. In one extension direction of the hook structure, there is a clearance between a portion of the hook structure facing away from the core module and a side wall of the second profiled recess area, which is larger than the clearance between the core module and a side wall of the first profiled recess area.

[0004] In some embodiments, the size of the clearance between the part of the hook structure facing away from the core module and the side wall of the second profiled recess area is in a range of 0.5 to 1.5 mm, and / or the size of the clearance between the core module and the side wall of the first profiled recess area is in a range of 0.05 to 0.2 mm.

[0005] In some embodiments, the part of the hook structure facing away from the core module includes a battery housing, wherein the clearance between the battery housing and the side wall of the second profiled recess area is larger than the clearance between the core module and the side wall of the first profiled recess area.

[0006] In some embodiments, the hook structure includes an elastic part that connects the core module to the battery housing; wherein the clearance between the elastic part and the side wall of the second profiled recess area is larger than the clearance between the core module and the side wall of the first profiled recess area when the headphones are inserted into the profiled recess.

[0007] In some embodiments, the hook structure includes a hard part that connects the core module to the elastic part; wherein the clearance between the elastic part and the side wall of the second profiled recess area is larger than the clearance between the hard part and the side wall of the second profiled recess area when the headphones are received in the profiled recess.

[0008] In some embodiments, the core module is provided with a first magnetically attractive element and the lower housing arrangement is provided with a first magnetically attractive structure that interacts with the first magnetically attractive element, wherein the first magnetically attractive element and the first magnetically attractive structure magnetically interact with each other when the headphones are received in the profiled recess.

[0009] In some embodiments, the hook structure is provided with a second magnetically attractive element, and the lower housing arrangement is provided with a second magnetically attractive structure that interacts with the second magnetically attractive element, wherein the second magnetically attractive element and the second magnetically attractive structure magnetically interact with each other when the headphones are received in the profiled recess.

[0010] In some embodiments, the lower housing arrangement further comprises first electrode clamps located between the first magnetically attractive structure and the second magnetically attractive structure, wherein, after the headphones are inserted into the profiled recess, the first magnetically attractive structure and the first magnetically attractive element in the headphones form a first magnetically attractive matching pair, and the second magnetically attractive structure and the second magnetically attractive element in the headphones form a second magnetically attractive matching pair, such that the first electrode clamps and second electrode clamps in the headphones come into unambiguous contact with each other through the first magnetically attractive matching pair and the second magnetically attractive matching pair.

[0011] In some embodiments, the lower housing arrangement is provided with both profiled recesses, wherein the second profiled recess areas of the two profiled recesses are arranged such that they intersect, whereby, when a headphone is received in each of the two profiled recesses, the hook structures of the two headphones overlap; and wherein overlap points are created when the hook structures of the two headphones overlap.

[0012] In some embodiments, it is provided that the areas of the two second profiled recess areas, which are located between two overlapping points and are surrounded by the hook structures, are integrally connected.

[0013] In some embodiments, an isolated island area is provided in the areas of the two second profiled recess areas, which are located between two overlap points and are surrounded by the hook structures, wherein a clearance between each of the hook structures and a side wall of the isolated island area is larger than the clearance between the core module and the side wall of the first profiled recess area.

[0014] In some embodiments, the charging box includes electrode clamps that are used at least for charging, with the electrode clamps not being located on the battery housing.

[0015] The present application has the following advantageous effects: When the headphones are inserted into the profiled recess, the clearance between the part of the hook structure facing away from the core module and the side wall of the second profiled recess area is designed in one direction of extension of the hook structure to be larger than the clearance between the core module and the side wall of the first profiled recess area. This allows the core module to be inserted smoothly through the first profiled recess area, while the second profiled recess area provides a larger range of motion for the hook structure, thereby increasing the success rate of inserting the headphones into the box and improving placement stability. BRIEF DESCRIPTION OF THE FIGURES

[0016] To clarify the technical solutions in the embodiments of the application, the drawings required for describing these embodiments are briefly presented below. Obviously, the drawings in the following description represent only some embodiments of the application. A person skilled in the art can derive further drawings from these drawings without inventive step. Fig. Figure 1 shows a schematic representation of a user's anterior ear contour according to the present application; Fig. Figure 2 shows a schematic structural representation of a headphone in an embodiment of the present application; Fig. Figure 3 shows a schematic representation of the headphones in an embodiment of the present application in a worn state; Fig. Figure 4 shows a schematic structural representation of the headphones in an embodiment of the present application; Fig. Figure 5 shows a schematic structural representation of the headphones in an embodiment of the present application; Fig. Figure 6 shows a comparison diagram of frequency response curves determined in the same listening position when a core module of the headphones is located in different positions on the ear in an embodiment of the present application; Fig. Figure 7 shows a cutaway schematic structural representation of the headphones. Fig. 2 along the cutting direction A1-A1 in an exemplary embodiment; Fig. Figure 8 shows a cutaway schematic structural representation of the headphones. Fig. 2 along the cutting direction A2-A2 in an exemplary embodiment; Fig. Figure 9 shows a schematic structural representation of the headphones in an embodiment of the present application; Fig. Figure 10 shows a schematic structural representation of a core housing in an embodiment of the present application; Fig. Figure 11 shows a schematic structural representation of the core housing in an embodiment of the present application; Fig. Figure 12 shows a schematic structural representation of a support in an embodiment of the present application; Fig. Figure 13 shows an enlarged schematic structural representation of the headphones. Fig. 8 in area B1 in an exemplary embodiment; Fig. Figure 14 shows an enlarged schematic structural representation of the headphones. Fig. 8 in area B2 in an exemplary embodiment; Fig. Figure 15 shows a schematic structural representation of a hook structure in an embodiment of the present application; Fig. Figure 16 shows a cutaway schematic structural representation of the hook structure. Fig. 15 along the cutting direction A3-A3 in an exemplary embodiment; Fig. Figure 17 shows a cutaway schematic structural representation of the hook structure. Fig. 15 along another cutting direction perpendicular to the cutting direction A3-A3 in an embodiment; Fig. Figure 18 shows an exploded schematic structural representation of the hook structure from Fig. 15 in one embodiment; Fig. Figure 19 shows a schematic structural representation of a charging box in an embodiment of the present application; Fig. Figure 20 shows a schematic structural representation of the charging box. Fig. 19 with headphones placed inside in an exemplary embodiment; Fig. Figure 21 shows a schematic structural representation of a charging box in an embodiment of the present application; Fig. 22 shows a cutaway schematic structural representation of the charging box made of Fig. 21 in a closed state along the cutting direction A4-A4 in an embodiment; Fig. Figure 23 shows a schematic structural representation of the charging box. Fig. 22 in an exemplary embodiment; Fig. 24 shows a cutaway schematic structural representation of the charging box made of Fig. 19 along the cutting direction A5-A5 in an exemplary embodiment; Fig. Figure 25 shows a schematic structural representation of a charging box comprising an upper housing arrangement with a limiting element according to the present application; Fig. Figure 26 shows a schematic structural representation of the upper housing arrangement with the limiting element made of Fig. 25 from a different perspective; Fig. Figure 27 shows a cutaway schematic structural representation of a charging box in an open state in an embodiment of the present application; Fig. Figure 28 shows an exploded schematic structural representation of a limiting mechanism of a loading box in an embodiment of the present application; Fig. Figure 29 shows a schematic structural section of the limiting mechanism. Fig. 28 before disassembly in an exemplary embodiment; Fig. Figure 30 shows an exploded schematic structural representation of a limiting mechanism of a loading box in a further embodiment of the present application; Fig. Figure 31 shows a schematic structural section of the limiting mechanism. Fig. 30 before disassembly in an exemplary embodiment; Fig. Figure 32 shows a cutaway schematic structural representation of a boundary structure made of Fig. 31 along the cutting direction A6-A6; Fig. Figure 33 shows a cutaway schematic structural representation of a charging box in a closed state in an embodiment of the present application; and Fig. Figure 34 shows a schematic representation of the simulation results of a magnetic field at the Hall sensor of a charging box in an embodiment of the present application. DETAILED EXECUTION FORMS

[0017] The present application is described in further detail in connection with the drawings and the exemplary embodiments. It should be noted in particular that the following exemplary embodiments are intended only to illustrate the present application, without, however, limiting its scope. Furthermore, the following exemplary embodiments represent only some, not all, of the embodiments of the present application. All other exemplary embodiments that are accessible to a person skilled in the art without inventive step are within the scope of protection of the application.

[0018] The mention of "exemplarities" in this application means that the specific features, structures, or properties described in connection with these exemplary embodiments may be included in at least one exemplary embodiment of this application. What the person skilled in the art understands explicitly and implicitly is that the exemplary embodiments described in this application can be combined with further exemplary embodiments.

[0019] Combined with Fig. It is evident from Figure 1 that a user's ear 100 may comprise an external auditory canal 101, a cavum conchae 102, a cymba conchae 103, a fossa triangularis 104, an antihelix 105, a scapha 106, a helix 107, an antitragus 108, and other physiological body parts. Although the external auditory canal 101 has a certain depth and extends to the eardrum, for the sake of simplicity of description and in conjunction with Fig. 1. Unless otherwise specified in the present application, the external auditory canal 101 is specifically designated as the entrance furthest from the tympanic membrane (i.e., the ear opening). Furthermore, it is provided that the physiological body parts such as the cavum conchae 102, the cymba conchae 103, and the fossa triangularis 104 have a certain volume and depth, and that the cavum conchae 102 and the external auditory canal 101 are in direct communication, i.e., it can simply be considered that the aforementioned ear opening lies below the cavum conchae 102.

[0020] Furthermore, it is anticipated that different users may exhibit individual variations, resulting in different shapes, sizes, and other dimensions of the ears. To simplify the description and reduce (or even eliminate) individual variations between different users, a simulator with the head and (left and right) ear, such as the GRAS 45BC KEMAR, can be manufactured based on the standards ANSI: S3.36, S3.25 and IEC: 60318-7. Therefore, expressions such as "the user wears the headphones," "the headphones are in the worn state," and "in the worn state" in this application can refer to the headphones being worn on the ear of the aforementioned simulator.Naturally, due to individual variations among different users, there may be some differences between how different users wear the headphones and how the headphones are worn on the ear of the aforementioned simulator; however, these differences should be accepted.

[0021] It should be noted that in medicine and anatomy, three fundamental planes of section can be defined for the human body: the sagittal plane, the coronal plane, and the horizontal plane. Three fundamental axes can also be defined: the sagittal axis, the coronal axis, and the vertical axis. The sagittal plane is a plane of section perpendicular to the ground, running in the front-to-back direction of the body, dividing the human body into a left and a right part. The coronal plane is a plane of section perpendicular to the ground, running in the left-to-right direction of the body, dividing the human body into an anterior and a posterior part.The horizontal plane refers to a cross-sectional plane parallel to the ground along the top-bottom direction of the body, dividing the human body into an upper and a lower part. Accordingly, the sagittal axis refers to an axis running in the front-back direction of the body and perpendicular to the coronal plane, the coronal axis to an axis running in the left-right direction of the body and perpendicular to the sagittal plane, and the vertical axis to an axis running in the top-bottom direction of the body and perpendicular to the horizontal plane. Furthermore, the expression "front of the ear" as described in this application is intended to be the opposite of the expression "back of the ear," the former referring to a side of the ear facing away from the head and the latter to a side of the ear facing the head. Both refer to the user's ear.When viewing the ear of the aforementioned simulator in the direction of the coronal axis of the human body, the following results: Fig. 1 Schematic representation of the anterior ear contour.

[0022] For example, in connection with the Fig. As can be seen from Figures 2 to 5, the headphones 10 can comprise a core module 11 and a hook structure 12 connected to the core module 11. In the worn state, the core module 11 is located in front of the ear, and the hook structure 12 is located at least partially behind the ear, so that the headphones 10 hang from the ear when worn. The core module 11 can have a connecting end CE that is connected to the hook structure 12 and a free end FE that is not connected to the hook structure 12. Furthermore, the core module 11 can be arranged so that it does not block the external ear canal when worn, thus making the headphones 10 an "open-ear headphone." Due to individual variations in how different users wear the headphones 10, the core module 11 could partially cover the external ear canal without blocking it.

[0023] To improve the stability of the headphones 10 when worn, one of the following options, or a combination thereof, can be used. First: The hook structure 12 is at least partially designed as a profiled structure that adapts to at least one of the backs of the ear and the head in order to increase the contact area of ​​the hook structure 12 with the ear and / or the head, thereby increasing the resistance to the headphones 10 falling out of the ear. Second: The hook structure 12 is at least partially designed as an elastic structure, so that it exhibits a certain degree of deformability when worn, in order to increase the positive pressure exerted by the hook structure 12 on the ear and / or the head, thereby increasing the resistance to the headphones 10 falling out of the ear.Third: The hook structure 12 is at least partially arranged so that, when worn, it presses against the head, thereby generating a counterforce that presses the ear. This presses the core module 11 against the front of the ear to increase the resistance against the earphone 10 falling out of the ear. Fourth: The core module 11 and the hook structure 12 are arranged so that, when worn, they each clamp physiological body parts, such as the antihelix and the cavum conchae, on the front and back of the ear, respectively, to increase the resistance against the earphone 10 falling out of the ear.Fifth: The core module 11 or an associated auxiliary structure is arranged such that it / they protrude at least partially into physiological body parts such as the cavum conchae, the cymba conchae, the fossa triangularis or the scapha in order to increase the resistance against the headphone 10 falling out of the ear.

[0024] For example, in connection with Fig. Figure 3 shows that, in the worn state, the free end FE of the core module 11 projects into the concha. The core module 11 and the hook structure 12 can be arranged such that they together clamp an ear area corresponding to the concha, both from the front and back of the aforementioned ear area, in order to increase the resistance against the headphone 10 falling out of the ear and thus improve the stability of the headphone 10 when worn. For example, the free end FE is pressed into the concha in a thickness direction X. Alternatively, the free end FE rests against the concha in a length direction Y and width direction Z.

[0025] It should be noted that, in the worn state, in addition to the free end FE of the core module 11 projecting into the concha, it is also possible for an orthogonal projection of the free end to fall onto the antihelix, or for this orthogonal projection to fall onto the left or right side of the head and lie on the sagittal axis of the human body in front of the ear. In other words, the hook structure 12 can support the core module 11 so that it can be worn at a location such as the concha, the antihelix, or the front of the ear.

[0026] For example, in connection with the Fig. 3 and Fig. As can be seen in Figure 4, the core module 11, when worn, can have an inner surface IS facing the ear, an outer surface OS facing away from the ear, and a connecting surface linking the inner surface IS to the outer surface OS in the thickness direction X. The thickness direction X can be defined as the direction in which the core module 11 extends towards or away from the ear when worn. Furthermore, it is provided that the aforementioned connecting surface is located at least partially within the conchal cavity when worn and forms a first contact zone with the front of the aforementioned ear area. The hook structure 12 forms a second contact zone with the back of the ear area when worn, and the second contact zone overlaps at least partially with the first contact zone in the thickness direction of the ear area.This allows not only the core module 11 and the hook structure 12 to clamp the ear together from the front and back of the ear, but the clamping force formed acts mainly as a pressure force, which contributes to improving the stability and comfort of the headphones 10 when worn.

[0027] It should be noted that, when worn and viewed along the coronal axis, the core module 11 can be circular, elliptical, square with rounded corners, rectangular with rounded corners, etc. If the core module 11 is circular, elliptical, or otherwise shaped, the connecting surface described above can refer to a curved side of the core module 11. If, however, the core module 11 is square with rounded corners, rectangular with rounded corners, or otherwise shaped, the connecting surface described above can include a bottom surface LS, a top surface US, and a back surface RS, as described below. Furthermore, the core module 11 can have a longitudinal direction Y and a lateral direction Z, which are perpendicular to the thickness direction X and orthogonal to each other.The longitudinal direction Y can be defined as the direction in which the core module 11, when worn, extends towards or away from the back of the user's head. The lateral direction Z can be defined as the direction in which the core module 11, when worn, extends towards or away from the top of the user's head. To simplify the description, this embodiment is therefore described using the example of a rectangular core module 11 with rounded corners. The length of the core module 11 in the longitudinal direction Y can be greater than the width of the core module 11 in the lateral direction Z.

[0028] For example, in connection with the Fig. 2, Fig. 3 and Fig. As can be seen in Figure 5, when worn and viewed along the coronal axis of the human body, the connecting end CE is closer to the top of the head than the free end FE, in order to facilitate the insertion of the free end FE into the conchal cavity. Therefore, the angle between the longitudinal direction Y and the direction of the sagittal axis of the human body can be between 15° and 60°. If the aforementioned angle is too small, the free end FE may not be able to insert into the conchal cavity, and the sound outlet 111a on the core module 11 will be too far from the external auditory canal. Conversely, if the aforementioned angle is too large, the free end FE may not be able to insert into the conchal cavity, and the external auditory canal will be blocked by the core module 11.In other words, this allows both the free end FE to protrude into the cavum conchae and an adequate distance between the sound outlet opening 111a on the core module 11 and the external auditory canal, so that the user can hear more of the sound waves generated by the core module 11 without blocking the external auditory canal.

[0029] For example, in connection with Fig. 4 shows that an orthogonal projection of the hook structure 12 onto a reference plane perpendicular to the length direction Y (e.g., the XZ plane in Fig. 4) with an orthogonal projection of the free end FE onto the same reference plane, partially overlapping. An overlap area, formed by the orthogonal projection of the hook structure 12 onto the aforementioned reference plane and the orthogonal projection of the free end FE onto the same reference plane, lies in the thickness direction X between the inner surface IS and the outer surface OS. This allows not only the core module 11 and the hook structure 12 to clamp the ear from both the front and back, but also ensures that the resulting clamping force acts primarily as a compressive force, thus improving the stability and comfort of the headphones 10 when worn.

[0030] Furthermore, in connection with the Fig. 2, Fig. 4, Fig. 5 and Fig. As can be seen in Figure 9, the hook structure 12 can comprise an elastic metal wire 121 connected to the core module 11 and a battery housing 123 connected to an end of the elastic metal wire 121 located further away from the core module 11, wherein a battery 14 coupled to the core module 11 is arranged in the battery housing 123, and wherein an orthogonal projection of the battery housing 123 onto the aforementioned reference plane partially overlaps with the orthogonal projection of the free end FE onto the same reference plane. This allows the battery housing 123 to support the ear from behind when the free end FE abuts the conchal cavity, thus improving the stability of the earphone 10 when worn.The battery housing 123 can comprise a lid 1231 connected to the elastic metal wire 121 and a battery compartment 1232 connected to the lid 1231, the battery compartment 1232 together with the lid 1231 forming a chamber structure for receiving the battery 14.

[0031] For example, in connection with Fig. As can be seen in Figure 5, the core module 11, when worn, can have, in the width direction Z, an upper surface US facing away from the external auditory canal, an underside LS facing the external auditory canal, and a back surface RS connecting the upper surface US with the underside LS, wherein the back surface RS, when worn, is located at one end pointing towards the back of the head in the length direction Y and is at least partially within the conchae. An edge of an orthogonal projection of the hook structure 12 onto a reference plane perpendicular to the thickness direction X (e.g., the YZ plane in Figure 5) can be Fig. 5) on a side facing the core module 11, the surface is divided into a first section S1 and a second section S2, which have a continuous arc-shaped transition. A dividing point DP between the first section S1 and the second section S2 is the point on the aforementioned edge that is furthest from the top surface US in the lateral direction Z. Furthermore, the total degree of curvature of the hook structure 12 in the first section S1 is greater than the total degree of curvature of the hook structure 12 in the second section S2. This allows both the free end FE to project into the cavum conchae and the hook structure 12 to interact with the core module 11 to provide an adequate clamping force.

[0032] It should be noted that the aforementioned total degree of curvature can be used to qualitatively describe the degrees of curvature of different sections of the hook structure 12, where the radius of curvature of each section can be constant or continuously variable. Therefore, the radius of curvature of at least one point in the first section S1 is smaller than the radius of curvature of any point in the second section S2. Furthermore, it is provided that the aforementioned total degree of curvature can also be characterized quantitatively using an average radius of curvature; that is, first, the radius of curvature of N points in each section is determined, and then an average value is calculated.

[0033] Furthermore, it is provided that, in the extension direction of the hook structure 12, the second section S2 can be longer than the first section S1 in order to facilitate the clamping of the ear by the hook structure 12 together with the core module 11 and to increase the contact area between the hook structure 12 and the user's skin. This contributes to improving the stability of the headphones 10 when worn.

[0034] In some embodiments, the headphones 10 have a first reference line segment RL1 parallel to the width direction Z, wherein the starting point of the first reference line segment RL1 is the point where the first reference line segment RL1 intersects the top surface US, and wherein the endpoint of the first reference line segment RL1 is the separation point DP. A second reference line segment RL2, a third reference line segment RL3, and a fourth reference line segment RL4, which are mentioned below, are successively located further and further 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 protrude into the concha, and the sound outlet 111a on the core module 11 may be too far from the external auditory canal. Conversely, if the length of the first reference line segment RL1 is too long, the free end FE may not be able to protrude into the concha, and the external auditory canal may be blocked by the core module 11. In other words, this design ensures both that the free end FE can protrude into the concha and that there is an adequate distance between the sound outlet 111a on the core module 11 and the external auditory canal, allowing the user to hear more of the sound waves generated by the core module 11 without obstructing the external auditory canal.

[0035] Furthermore, it is provided that the second reference line segment RL2, which passes through a point at the quarter of the first reference line segment RL1 and parallel to the longitudinal direction Y, intersects the first section S1 at a first intersection point P1 and the second section S2 at a second intersection point P2, wherein the distance between the first intersection point P1 and the starting point of the first reference line segment RL1 can 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 can be between 12 mm and 19 mm;that the third reference line segment RL3, passing through a point at the midpoint of the first reference line segment RL1 and parallel to the longitudinal direction Y, intersects the first section S1 at a third intersection point P3 and the second section S2 at a fourth intersection point P4, wherein the distance between the third intersection point 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;and that the fourth reference line segment RL4, passing through a point at three-quarters of the first reference line segment RL1 and parallel to the longitudinal direction Y, intersects the first section S1 at a fifth intersection point P5 and the second section S2 at a sixth intersection point P6, the distance between the fifth intersection point P5 and the starting point of the first reference line segment RL1 being 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 being between 12 mm and 19 mm. Thus, the hook structure 12 adapts better to the ear when the free end FE projects into the cavum conchae and there is an adequate distance between the sound outlet opening 111a on the core module 11 and the external auditory canal.

[0036] In some embodiments, a fifth reference line segment RL5 is located at the shortest distance in the longitudinal direction Y between the second section S2 and the rear RS, with the length of the fifth reference line segment RL5 being between 2 mm and 3 mm. If the length of the fifth reference line segment RL5 is too short, the core module 11, together with the hook structure 12, may exert excessive clamping force on the ear, resulting in discomfort. Conversely, if the length of the fifth reference line segment RL5 is too long, the core module 11, together with the hook structure 12, may exert insufficient clamping force on the ear, resulting in instability. In other words, this design ensures both the stability and comfort of the headphones 10 when worn.

[0037] Furthermore, the fifth reference line segment RL5 is defined as follows: The starting point of the fifth reference line segment RL5 is defined as the point where it intersects the back surface RS, and the endpoint of the fifth reference line segment RL5 is defined as the point where it intersects the second section S2. An orthogonal projection of an intersection point of the first reference line segment RL1 with the top surface US in the longitudinal direction Y intersects the second section S2 at a seventh intersection point P7. An orthogonal projection of an intersection point of an extension line of the first reference line segment RL1 with the bottom surface LS in the longitudinal direction Y intersects the second section 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.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. This allows the hook structure 12 to adapt better to the ear, taking into account both the stability and comfort of the headphones 10 when worn.

[0038] For example, in connection with the Fig. 7, Fig. 8 and Fig. As can be seen in Figure 5, the core module 11 can comprise a core housing 111 connected to the hook structure 12 and a loudspeaker 112 arranged within the core housing 111. The sound outlet 111a is located on an inner surface of the core housing 111 that faces the ear when worn (e.g., the aforementioned inner surface IS). The sound waves generated by the loudspeaker 112 are emitted through the sound outlet 111a to facilitate transmission into the external auditory canal. It should be noted that the sound outlet 111a can also be located either on a side of the core housing 111 corresponding to the bottom surface LS or at a corner between the aforementioned inner surface and the bottom surface LS.Furthermore, it is provided that the loudspeaker 112 can comprise a magnetic circuit system, a voice coil projecting into the magnetic circuit system and a diaphragm connected to the voice coil, wherein a magnetic field generated by the energized voice coil interacts with a magnetic field formed by the magnetic circuit system, causing the diaphragm to vibrate mechanically, which propagates through a medium such as air and generates a sound.

[0039] Furthermore, in connection with the Fig. As can be seen from Figures 7 to 9, the headphones 10 can comprise a main control circuit board 13 located in the core housing 111 and a battery 14 located at an end of the hook structure 12 further away from the core module 11. The battery 14 and the loudspeaker 112 are each coupled to the main control circuit board 13 to allow the battery 14 to power the loudspeaker 112 under the control of the main control circuit board 13. Of course, both the battery 14 and the loudspeaker 112 can be located in the core housing 111. Furthermore, the battery 14 can be located closer to the connection end CE and the loudspeaker 112 closer to the free end FE.

[0040] For example, in connection with the Fig. 3 and Fig. It is evident that, due to the certain volume and depth of the concha, a certain distance exists between the inner surface IS of the core housing 111 and the concha after the free end FE projects into the concha. In other words, when worn, the core module 11, together with the concha, can form an auxiliary chamber communicating with the external auditory canal, with the sound outlet 111a being located at least partially within this auxiliary chamber. Thus, when worn, the sound waves generated by the loudspeaker 112 and emitted through the sound outlet 111a are limited by this auxiliary chamber; that is, the auxiliary chamber can focus the sound waves.This allows more sound waves to be transmitted into the external auditory canal, thus improving the volume and sound quality of the sound heard by the user in the near field, which contributes to improving the acoustic performance of the headphones 10. Furthermore, the aforementioned auxiliary chamber is designed to be partially open, as the core module 11 can be positioned so that it does not block the external auditory canal when worn. This allows a large portion of the sound waves generated by the loudspeaker 112 and emitted through the sound outlet 111a to be transmitted into the external auditory canal, while a small portion of the sound waves is transmitted through a gap between the core module 11 and the ear (e.g., a portion of the cavum conchae not covered by the core module 11) to the headphones 10 and the outside of the ear, resulting in an initial loss of sound in the far field.Furthermore, the Kem module 11 is usually provided with an acoustic opening (e.g., a pressure relief opening 111c mentioned later), wherein the sound waves emitted through this acoustic opening usually form a second sound loss in the far field, and wherein the phases of the aforementioned first sound loss and the aforementioned second sound loss are (almost) out of phase, so that the two can cancel each other out of phase in the far field, which contributes to reducing the sound loss of the headphone 10 in the far field.

[0041] Furthermore, the headphones 10 are provided to include an adjustment mechanism for connecting the core module 11 to the hook structure 12, allowing different users to adjust the relative position of the core module 11 on the ear using this mechanism. This ensures that the core module 11, together with the cavum conchae, forms the aforementioned auxiliary chamber. Additionally, the adjustment mechanism allows the user to position the headphones 10 for a more stable and comfortable fit.

[0042] For example, in connection with Fig. As can be seen in Figure 6, the headphones 10 are first worn on the aforementioned simulator, then the position of the core module 11 is adjusted on the ear of the aforementioned simulator, and subsequently a frequency response curve of the headphones 10 is determined using a detector (e.g., a microphone) in the outer ear canal (e.g., at the position of the eardrum, i.e., the hearing position) of the simulator, in order to simulate the effect of hearing after the user has worn the headphones 10. The aforementioned frequency response curve can be used to characterize a relationship between the amplitude of the oscillation and the frequency. The abscissa of the aforementioned frequency response curve can represent the frequency in Hz. The ordinate of the aforementioned frequency response curve can represent the amplitude of the oscillation in dB. Fig. 6. A curve 6_1 can represent the frequency response curve of the core module 11 in the supported state without the formation of the aforementioned auxiliary chamber with the caveum conchae, and a curve 6_2 can represent the frequency response curve of the core module 11 in the supported state with the formation of the aforementioned auxiliary chamber with the caveum conchae. Based on this, the comparison diagram of the frequency response curves in Fig. 6 directly and unambiguously yields the following: Curve 6_2 lies overall above curve 6_1, i.e., it is more advantageous for improving the acoustic effect of the headphone 10 if the core module 11, when worn, forms the aforementioned auxiliary chamber with the caveum conchae than if the core module 11, when worn, does not form the aforementioned auxiliary chamber with the caveum conchae.

[0043] For example, in connection with the Fig. 7, Fig. 9 and Fig. It is evident from Figure 11 that the core module 11 can comprise a flexible insert block 1131 arranged outside the core housing 111, wherein the hardness of the flexible insert block 1131 is less than the hardness of the core housing 111. The core housing 111 can be a plastic part. The flexible insert block 1131 can be made of silicone, rubber, or other materials and can be formed by injection molding at a predetermined area of ​​the core housing 111. Furthermore, it is provided that the flexible insert block 1131 can at least partially cover an area of ​​the core housing 111 corresponding to the free end FE, so that the core module 11 abuts the cavity at least partially through the flexible insert block 1131. In other words, a part of the core housing 111 that projects into and is in contact with the cavity can be covered by the flexible insert block 1131.The flexible insert block 1131 thus creates a cushioning effect between the core housing 111 and the ear (for example, the aforementioned ear area) to reduce the pressure of the headphone 10 on the ear when the core module 11 presses against the concha, for example, when the core module 11 and the hook structure 12 are arranged to clamp an ear area corresponding to the concha of the ear, both from the front and back of the aforementioned ear area. This helps to improve the comfort of the headphone 10 when worn.

[0044] For example, the flexible insert block 1131 can continuously cover at least partially areas of the core housing 111 corresponding to the rear RS, the top US, and the bottom LS. For instance, the area of ​​the core housing 111 corresponding to the rear RS is covered by the flexible insert block 1131 to more than 90%, and the areas of the core housing 111 corresponding to the top US and the bottom LS are each covered by the flexible insert block 1131 to approximately 30%. This takes into account both the comfort of the headphones 10 when worn and the requirements for the arrangement of components such as the loudspeaker 112 within the core housing 111.

[0045] In some embodiments, it is provided that when viewed in the thickness direction X, the flexible insert block 1131 can be arranged in a U-shape.

[0046] In some embodiments, a portion of the flexible insert block 1131 corresponding to the underside LS can abut against the antitragus. The thickness of that portion of the flexible insert block 1131 corresponding to the backside RS can be less than the thicknesses of those portions of the flexible insert block 1131 corresponding to the topside US and the underside LS, respectively, in order to ensure good comfort even if the core module 11 is impacted against an uneven area in the concha.

[0047] For example, in connection with the Fig. 7 and Fig. Figure 8 shows that the core housing 111 can comprise an inner core housing 1111 and an outer core housing 1112, which are interlocked in the thickness direction X, wherein, in the worn state, the inner core housing 1111 is closer to the ear than the outer core housing 1112. A parting surface 111b between the outer core housing 1112 and the inner core housing 1111 is inclined towards the free end FE on the side on which the inner core housing 1111 is located, so that the flexible insert block 1131 can be arranged as far as possible in the region of the outer core housing 1111 that corresponds to the free end FE. For example, in conjunction with Fig. 11 can be seen that the entire flexible insert block 1131 is arranged in the area of ​​the outer core housing 111 corresponding to the free end FE in order to simplify the structure of the core module 11 and reduce machining costs.

[0048] For example, in connection with the Fig. 7, Fig. 8 and Fig. It is evident from Figure 11 that the core module 11 can comprise a flexible coating 1132, wherein the hardness of the flexible coating 1132 is less than the hardness of the core housing 111. The core housing 111 can be a plastic part. The flexible coating 1132 can consist of silicone, rubber, or other materials and can be formed on a predetermined area of ​​the core housing 111 by injection molding, bonding with an adhesive, or otherwise. Furthermore, it is provided that the flexible coating 1132 can integrally cover at least part of the outer surface of the flexible insert block 1131 and at least part of the outer surface of the outer core housing 1112 not covered by the flexible insert block 1131, which contributes to improving the optical uniformity of the core module 11. Naturally, the flexible coating 1132 can also cover the outer surface of the inner core housing 1111.The hardness of the flexible insert block 1131 is lower than that of the flexible coating 1132 to ensure sufficient flexibility of the flexible insert block 1131. Furthermore, the flexible coating 1132 improves the comfort of the headphones 10 when worn and provides a degree of structural rigidity to protect the flexible insert block 1131. The outer surface area of ​​the flexible insert block 1131 is also specified to be between 126 mm. 2 and 189 mm 2The aforementioned area can vary. If it is too small, this can easily lead to a deterioration in the comfort of the core module 11 when worn. If it is too large, the core module 11 can easily become too bulky, and the area where the flexible insert block 1131 does not abut the cavum conchae becomes too large, which contradicts the original purpose of the flexible insert block 1131 arrangement. Furthermore, the thickness of the flexible coating 1132 is intended to be less than the thickness of the outer core casing 1112.

[0049] For example, in connection with the Fig. 11 and Fig. As can be seen from Figure 9, the core module 11 can comprise metallic functional patterns such as an antenna pattern 1141 and / or a touch pattern 1142, which are arranged between the outer core housing 1112 and the flexible coating 1132. The antenna pattern 1141 can be formed on the outside of the outer core housing 1112 using laser direct structuring (LDS). The touch pattern 1142 can either be formed on the outside of the outer core housing 1112 using laser direct structuring or be bonded to the outside of the outer core housing 1112 as a flexible touch circuit board. Furthermore, the outer core housing 1112 is provided with metallized holes, each connected to the antenna pattern 1141 and the touch pattern 1142, respectively.Since the main control board 13 is located in the core housing 111, for example by connecting the main control board 13 to the outer core housing 1112, the main control board 13 can come into contact with the inner walls of the respective metallized holes via elastic metal parts such as pogo pins or metal snap discs. For example, the antenna pattern 1141 is connected to pogo pin 131 and the touch pattern 1142 to pogo pin 132, which are soldered onto the main control board 13. Accordingly, the loudspeaker 112 is located on a side of the main control board 13 facing away from the outer core housing 1112.Compared to the arrangement of the antenna pattern 1141 and the touch pattern 1142, each on the inner side of the outer core housing 1112 facing the loudspeaker 112, the distance between the antenna pattern and the main control circuit board 13 can be increased by arranging the antenna pattern 1141 on the outer side of the outer core housing 1112. This increases the antenna's clear area, thus improving the interference immunity of the antenna pattern 1141. Conversely, arranging the touch pattern 1142 on the outer side of the outer core housing 1112 reduces the distance between the touch pattern and an external signal-triggering source (e.g., a user's finger). This reduces the touch distance, thus increasing the sensitivity of the touch pattern 1142 to user touches.

[0050] In some embodiments, the antenna pattern 1141 can peripherally surround the touch pattern 1142 in order to utilize the space on the outside of the outer core housing 1112. The antenna pattern 1141 can be U-shaped and the touch pattern 1142 square.

[0051] Furthermore, it is provided that the core module 11 can include a microphone 133 soldered to the main control circuit board 13, wherein the microphone 133 can record the user's voice and ambient sounds via through-holes formed on the outer core housing 1112. The microphone 133 can be pressed further against the outer core housing 1112 when the main control circuit board 13 is connected to the outer core housing 1112.

[0052] For example, in connection with the Fig. 10 and Fig. It can be seen from Figure 11 that the inner core housing 1111 can comprise a bottom wall 1113 and a first side wall 1114 connected to the bottom wall 1113, and that the outer core housing 1112 can comprise a top wall 1115 and a second side wall 1116 connected to the top wall 1115, wherein the second side wall 1116 and the first side wall 1114 are interlocked along the mold parting line 111b and can support each other. This is evident when viewed in the width direction Z and in a reference direction pointing from the connection end CE to the free end FE (e.g., in the opposite direction of the arrow Y in the Fig. 10 and Fig. 11) A portion of the first side wall 1114 located near the free end FE gradually approaches the bottom wall 1113 in the thickness direction X. Similarly, a portion of the second side wall 1116 located near the free end FE gradually moves further away from the top wall 1115 in the thickness direction X. As a result, the mold parting line 111b is inclined towards the free end FE on the side where the inner core housing 1111 is located. The flexible insert block 1131 is at least partially located on the outside of the second side wall 1116. For example, in conjunction with the Fig. 11 and Fig. As can be seen in Figure 9, the flexible insert block 1131 is arranged not only on the outside of the second side wall 1116, but also partially on the outside of the top wall 1115. Accordingly, the sound outlet opening 111a can be arranged on the bottom wall 1113. Of course, the sound outlet opening 111a can also be arranged either on a side of the first side wall 1114, corresponding to the underside LS, or at a corner between the first side wall 1114 and the bottom wall 1113. Furthermore, it is provided that the antenna pattern 1141 and the touch pattern 1142, as well as their respective metallized holes, can be arranged on the top wall 1115, and the through-holes for sound reception by the microphone 133 can also be arranged on the top wall 1115.

[0053] For example, in connection with the Fig. 7 and Fig. 11 It is evident that the outer core housing 1112 can be provided with an insert slot located at least partially on the second side wall 1116, in which the flexible insert block 1131 is inserted, so that the outer surface of an area of ​​the outer core housing 1112 that is not covered by the flexible insert block 1131 transitions continuously into the outer surface of the flexible insert block 1131. The Fig. The area shown in Figure 7, in which the flexible insert block 1131 is located, can simply be considered the previously mentioned insert slot. This is not only advantageous for the accumulation of the flexible insert block 1131 on the outer core housing 1112 during the injection molding process, thus preventing overflow of the flexible insert block 1131. Furthermore, it is advantageous for improving the optical quality of the core module 11 and avoiding irregularities on the surface of the core module 11.

[0054] Furthermore, it is provided that the second side wall 1116 can comprise a first partial side wall section 1117 and a second partial side wall section 1118 connected to the first partial side wall section 1117, wherein the first partial side wall section 1117 is located closer to the top wall 1115 in the thickness direction X than the second partial side wall section 1118, and wherein the second partial side wall section 1118 projects towards the outside of the core housing 111 relative to the first partial side wall section 1117. In short, the second side wall 1116 can be stepped. This is not only advantageous for the accumulation of the flexible insert block 1131 on the outer core housing 1112 during the injection molding process, thus preventing overflow of the flexible insert block 1131.Furthermore, it is also advantageous for a better thrust of the core module 11 into the caveum conchae via the flexible insert block 1131, which improves the comfort of the headphones 10 when worn.

[0055] Furthermore, it is provided that the main control circuit board 13 is connectable to the outer core housing 1112, for example, attached to a heat-melt pin connected to the top wall 1115, and can partially overlap with the first partial side wall section 1117 in the thickness direction X; and that the loudspeaker 112 can partially overlap with the second partial side wall section 1118 in the thickness direction X. This is thus advantageous for arranging a sufficiently large loudspeaker 112 in the core housing 111, so that the volume of the sound produced by the headphones 10 is increased.

[0056] For example, in connection with the Fig. 10 and Fig. As can be seen in Figure 8, the core housing 111 can be provided with a pressure relief opening 111c, wherein the pressure relief opening 111c establishes communication between a space on the side of the loudspeaker 112 facing the main control circuit board 13 and the external environment, i.e., air can freely flow in and out of this aforementioned space. This is thus advantageous for reducing the resistance of the diaphragm of the loudspeaker 112 during the vibration process. Furthermore, the pressure relief opening 111c can be oriented towards the top of the head when worn, to advantageously prevent sound waves transmitted via the pressure relief opening 111c from being audible as sound loss (i.e., the second sound loss mentioned above).Based on the Helmholtz resonator, the opening diameter of the pressure relief opening 111c can be as large as possible, so that the resonance frequency of the second sound loss is shifted as far as possible into a higher frequency band (e.g. a frequency range greater than 4 kHz), which helps to further avoid hearing the second sound loss.

[0057] Furthermore, it is provided that the core housing 111 can be equipped with an opening for sound regulation 111d, wherein the opening for sound regulation 111d causes the resonance frequency of the second sound loss to be shifted as far as possible into a higher frequency band (e.g., a frequency range greater than 4 kHz), which further contributes to preventing the second sound loss from being heard. The area of ​​the opening for sound regulation 111d can be smaller than the area of ​​the pressure relief opening 111c, so that the space on the side of the loudspeaker 112 facing the main control circuit board 13 communicates more extensively with the outside environment via the pressure relief opening 11c.Furthermore, the distance between the sound outlet opening 111a and the pressure relief opening 111c in the lateral direction Z is greater than the distance between the sound outlet opening 111a and the sound regulation opening 111d in the lateral direction Z, in order to prevent the sound waves emitted by the sound outlet opening 111a and the pressure relief opening 111c from canceling each other out of phase in the near field. This helps to increase the volume of the sound emitted by the sound outlet opening 111a that the user hears. Accordingly, the opening for sound regulation 111d is located closer to the connection end CE than the sound outlet opening 111a, in order to increase the distance between the two in the longitudinal direction Y and thus prevent the sound waves emitted by the sound outlet opening 111a and the opening for sound regulation 111d from canceling each other out of phase in the near field.This helps to increase the volume of the sound emitted through the sound outlet 111a, which the user hears.

[0058] For example, in connection with Fig. As can be seen in Figure 10, the sound outlet opening 111a, the pressure relief opening 111c, and the sound regulation opening 111d can be arranged on the inner core housing 1111, for example, the sound outlet opening 111a on the bottom wall 1113 and the pressure relief opening 111c and the sound regulation opening 111d each on the first side wall 1114. The pressure relief opening 111c and the sound regulation opening 111d can each be arranged on opposite sides of the first side wall 1114 in the width direction Z. Because the sound outlet opening 111a, the pressure relief opening 111c, and the sound regulation opening 111d are all arranged on the inner core housing 1111, the outer core housing 1112 has a simpler structure, which contributes to reducing machining costs.By arranging the pressure relief opening 111c and the sound regulation opening 11ld on the two opposite sides of the first side wall 1114 in the width direction Z, the above-mentioned mold parting surface 111b can also be arranged symmetrically with respect to a reference plane perpendicular to the width direction Z, which contributes to improving the optical quality of the core module 11.

[0059] For example, in connection with the Fig. 7 and Fig. As can be seen in Figure 8, the core module 11 can include a support 115 arranged in the core housing 111, wherein the support 115 and the loudspeaker 112 can enclose an acoustic chamber 116, so that the acoustic chamber 116 is separated from other structures in the core housing 111 (e.g., the main control circuit board 13, etc.), which contributes to improving the acoustic performance of the core module 11. The core housing 111 is provided with acoustic openings, for example, at least one pressure relief opening 111c and one sound regulation opening 111d. The support 115 is provided with an acoustic channel 1151, which establishes communication between the acoustic openings and the acoustic chamber 116, in order to facilitate communication between the acoustic chamber 116 and the external environment; that is, air can flow freely into and out of the acoustic chamber 116.This is advantageous in reducing the resistance of the diaphragm of the loudspeaker 112 during the vibration process.

[0060] Furthermore, it is provided that the carrier 115, together with the core housing 111, forms a first adhesive slot 1171, which at least partially surrounds the aforementioned acoustic openings, wherein a first adhesive for sealing a mounting gap between the carrier 115 and the core housing 111 is contained in the first adhesive slot 1171. That is, the first adhesive achieves a watertight seal, thereby advantageously preventing sweat, rainwater, and other liquid droplets from penetrating from the outside into a space in which the main control circuit board 13 is located in the core housing 111.Based on the Helmholtz resonator, in contrast to the prior art where a silicone sleeve is pressed against the core housing 111 by the carrier 115 to achieve a watertight seal, the present technical solution eliminates the need for the silicone sleeve in the prior art by providing a watertight seal with the first adhesive. This is advantageous for shortening the length of a portion (including the acoustic channel 1151 and the acoustic opening) of the acoustic chamber 116 that communicates with the external environment. This shifts the resonance frequency of the sound loss emitted and generated through the pressure relief opening 111c (i.e., the aforementioned second sound loss) as far as possible into a higher frequency band (e.g., a frequency range greater than 4 kHz) to further prevent the second sound loss from being heard.

[0061] It should be noted that the first adhesive slot 1171 at least partially surrounds the pressure relief opening 111c if the acoustic opening mentioned above is the pressure relief opening 111c; that the first adhesive slot 1171 at least partially surrounds the sound regulation opening 111d if the acoustic opening mentioned above is the sound regulation opening 111d; and that the first adhesive slot 1171 at least partially surrounds the pressure relief opening 111c or the sound regulation opening 111d if the acoustic openings mentioned above are the pressure relief opening 111c or the sound regulation opening 111d. For the sake of simplicity, and in conjunction with the Fig. 8, Fig. 10 and Fig. Paragraph 12 provides that the present application is explained by way of example, in which the acoustic openings are the pressure relief opening 111c and the sound regulation opening 111d, respectively, and the first adhesive slot 1171 at least partially surrounds the pressure relief opening 111c and the sound regulation opening 111d, respectively. It is further provided that the first adhesive slot 1171 can completely surround the acoustic openings, i.e., the first adhesive slot 1171 forms a complete annular structure, if the distance between the support 115 and the core housing 111 (e.g., its bottom wall 1113) is sufficiently large, or if the bottom wall 1113 and the first side wall 1114 of the core housing 111 are formed as components not formed in one piece (i.e., as two separate components).

[0062] For example, in connection with the Fig. 12 and Fig. As can be seen in Figure 10, the carrier 115 can comprise an annular body 1152 and a docking part 1153 connected to the annular body 1152. The annular body 1152 is mounted peripherally on the loudspeaker 112 to form the acoustic chamber 116. The acoustic channel 1151 runs through the docking part 1153 and the annular body 1152. Furthermore, the docking part 1153 is located between the annular body 1152 and the core housing 111 and at least partially surrounds the aforementioned acoustic openings, with the docking part 1153 together with the core housing 111 forming the first adhesive slot 1171. Since the acoustic openings can be the pressure relief opening 111c and the sound regulation opening 111d, two docking parts 1153 and two first adhesive slots 1171 are provided accordingly. Accordingly, the docking part 1153 together with the first side wall 1114 forms the first adhesive slot 1171.By arranging the carrier 115 in a ring shape, one side of the loudspeaker 112 facing the main control circuit board 13 is exposed, which contributes to reducing the thickness of the core module 11 in the thickness direction X.

[0063] For example, in connection with the Fig. 10 and Fig. As can be seen in Figure 8, a recess 1119 can be formed on the inside of the core housing 111, wherein the aforementioned acoustic openings can be provided at the bottom of the recess 1119, wherein the core module 11 can comprise a sound-absorbing mesh 118 arranged in the recess 1119, and wherein the docking part 1153 presses the sound-absorbing mesh 118 against the bottom of the recess 1119. This is advantageous not only for preventing the sound-absorbing mesh 118 from being scratched by the support 115 during assembly, but also for reducing the assembly gap between the support 115, the sound-absorbing mesh 118, and the inner core housing 1111, and for preventing the sound-absorbing mesh 118 from wobbling. The sound-absorbing mesh 118 can be attached to the bottom of the depression 1119 beforehand using double-sided adhesive tape or adhesive.The sound-absorbing mesh 118 can also be pre-attached to a steel protective mesh. The aforementioned steel protective mesh is then attached to the bottom of the recess 1119 using double-sided adhesive tape or adhesive. Since the acoustic openings mentioned above can be the pressure relief opening 111c and the sound regulation opening 111d, two recesses 1119 and two sound-absorbing meshes 118 are provided accordingly.

[0064] Furthermore, it is provided that the aforementioned first adhesive can also be used to seal the mounting gap between the support 115 and the sound-absorbing mesh 118 and / or the mounting gap between the sound-absorbing mesh 118 and the core housing 111 (e.g. side walls of the recess 1119), which contributes to further watertight sealing.

[0065] For example, in connection with the Fig. 8, Fig. 10 and Fig. Figure 12 shows that the docking part 1153 can be used to form a bottom wall and a side slotted wall of the first adhesive slot 1171, and the core housing 111 can be used to form another side slotted wall of the first adhesive slot 1171. The slotted wall on the core housing 111 and the slotted wall on the docking part 1153 are arranged opposite each other, so that the first adhesive slot 1171 has a certain width and depth. Naturally, the docking part 1153 can be used to form one side slotted wall of the first adhesive slot 1171, and the core housing 111 can be used to form the bottom wall and another side slotted wall of the first adhesive slot 1171.Alternatively, the docking part 1153 can be used to form a lateral slotted wall and part of the bottom wall of the first adhesive slot 1171, and the core housing 111 can be used to form another lateral slotted wall and the other part of the bottom wall of the first adhesive slot 1171.

[0066] For example, in connection with the Fig. As can be seen from Figures 12 to 14, the loudspeaker 112 can comprise a body 1121 and an annular support platform 1122 arranged around the circumference of the body 1121, wherein a lower end of the support 115 can be supported on the annular support platform 1122, wherein the acoustic channel 1151 can be open on its side facing the annular support platform 1122, and wherein the annular support platform 1122 further closes the open part of the acoustic channel 1151. It can simply be assumed that the first adhesive slot 1171 partially surrounds the aforementioned acoustic openings in order to subsequently facilitate the filling of the first adhesive slot 1171 with adhesive, for example by a dispensing process, etc.

[0067] In some embodiments, the annular support platform 1122 may comprise a first annular support surface 1123 and a second annular support surface 1124, which are arranged in a stepped fashion, the second annular support surface 1124 being arranged peripherally surrounding the first annular support surface 1123. A portion of the lower end of the carrier 115 may be supported on the first annular support surface 1123, with a gap being formed between the other portion of the lower end of the carrier 115 and the second annular support surface 1124, so that the carrier 115, together with the annular support platform 1122 and the core housing 111, forms a second adhesive slot 1172.The second adhesive slot 1172 contains a second adhesive for sealing an assembly gap between any two components of the carrier 115, the ring-shaped support platform 1122 and the core housing 111, in order to achieve a corresponding watertight seal.

[0068] In some embodiments, it is provided that an upper end of the support 115 can be attached to the body 1121 and together with the body 1121 forms a third adhesive slot 1173, wherein a third adhesive is received in the third adhesive slot 1173 for sealing a mounting gap between the support 115 and the body 1121 in order to achieve a corresponding watertight seal.

[0069] It should be noted that a specific assembly process of the core module 11 may comprise the following process steps, whereby the sequence of all process steps can be adapted as required: 1) Attaching the sound-absorbing mesh 118 to the bottom of the recess 1119 with double-sided adhesive tape beforehand; 2) Attaching the loudspeaker 112 to the bottom wall 1113 and dispensing the adhesive into the mounting gap between the two, so that the corresponding adhesive accumulates on the second annular contact surface 1124 of the loudspeaker 112;3) Attaching the carrier 115 to the loudspeaker 112 before the adhesive has cured in step 2), wherein the lower end of the carrier 115 is supported on the first annular support surface 1123 of the loudspeaker 112, so that the area between the lower end of the carrier 115 and the second annular support surface 1124 is also filled with adhesive, wherein the docking part 1153 of the carrier 115 presses against the sound-absorbing mesh 118 and together with the first side wall 1114 forms a first adhesive slot 1171, and wherein the upper end of the carrier 115 is attached to the body 1121 and together with the body 1121 forms the third adhesive slot 1173;and 4) Dispensing the adhesive in the assembly gaps between the first adhesive slot 1171, the third adhesive slot 1173, and the lower end of the carrier 115 on the one hand, and the loudspeaker 112 or the inner core housing 1111 on the other. Since the assembly gaps between the lower end of the carrier 115 and the loudspeaker 112 or the inner core housing 1111 are very close to the first adhesive slot 1171, the assembly gaps between the lower end of the carrier 115 and the loudspeaker 112 or the inner core housing 1111 can simply be considered a continuation of the first adhesive slot 1171. That is, the first adhesive slot 1171 and the second adhesive slot 1172 can communicate with each other;

[0070] For example, in connection with the Fig. As can be seen from Figures 15 to 18 and 7, the hook structure 12 can comprise an adapter housing 122 connected to the core module 11, wherein the adapter housing 122 can be pre-formed with a receiving chamber 124, and wherein the headphones 10 can comprise an electronic element 15 that is subsequently installed in the receiving chamber 124. In particular, the connection between the adapter housing 122 and the core module 11 can be established by one of the following assembly methods or a combination thereof: snap-fit ​​connection, welded connection, adhesive connection, threaded connection, screw connection, etc.In contrast to the prior art, in which the electronic element 15 is arranged in the core module 11, the present technical solution offers the advantage of retrofitting the electronic element 15 in the specified receiving chamber 124 of the hook structure 12, not only to save space in the core module 11 and thus make its structure more compact and smaller, to simplify the structure of the core module 11 and thus improve its assembly efficiency, but also to arrange the relative positions of the individual structural components in the headphone 10 appropriately, so that both the core module 11 and the hook structure 12 can be utilized.

[0071] It should be noted that the expression "the adapter housing 122 is pre-formed with the receiving chamber 124" is to be understood as meaning that the receiving chamber 124 is formed simultaneously with the molding of the adapter housing 122 and is not machined after the molding of the adapter housing 122. For example, the adapter housing 122 is intended to be a plastic housing, whereby the corresponding receiving chamber 124 can be obtained by the arrangement of a suitable mold core after the injection molding of the plastic housing. Accordingly, the expression "the electronic element 15 is subsequently installed in the receiving chamber 124" is to be understood as meaning that the electronic element 15 and the adapter housing 122 are not formed as one-piece components.For example, the adapter housing 122 is provided to be a plastic housing, whereby the electronic element 15 is not injection-molded into the plastic housing as a single piece. Based on this, the description mentioned later, that the adapter housing 122 is pre-formed with a through hole 1251, a blind hole 1252, and a through hole 1253, etc., is identical or similar and will not be repeated here. Of course, the receiving chamber 124 can also be obtained by a drilling process after the adapter housing 122 has been formed, whereby the through hole 1251, the blind hole 1252, and the through hole 1253, etc., can likewise be obtained by a drilling process after the adapter housing 122 has been formed.

[0072] For example, in connection with Fig. Figure 7 shows that the electronic element 15 can be coupled to the main control circuit board 13 to establish an electrical connection between the hook structure 12 and the core module 11, and that the adapter housing 122 can be pluggably attached to the core housing 111 to establish a simple and reliable structural connection between the hook structure 12 and the core module 11. This pluggable attachment is understood to mean that, initially, one of the adapter housing 122 and the core housing 111 partially projects into the other in one assembly direction and is then pluggably attached to it by means of another limiting structure, such as a plug-in pin, the assembly direction of which is not parallel to the assembly direction mentioned above.This previously mentioned pluggable fastening can also be understood to mean that such a pluggable fastening can be produced when one of the adapter housing 122 and the core housing 111 partially protrudes into the other without the previously mentioned limiting structure being required.

[0073] For example, in connection with the Fig. 7, Fig. 10 and Fig. As can be seen in Figure 16, the adapter housing 122 can be provided with first locking structures 1221 and the core housing 111 with second locking structures 1222, wherein the first locking structures 1221 project into the core housing 111 and engage with the second locking structures 1222 in a snap-fit ​​configuration, so that the adapter housing 122 is snapped and secured to the core housing 111, with the two being directly inserted and secured within each other without the need for any further limiting structure, which is simple and reliable. The first locking structures 1221 can be integrally formed on the adapter housing 122, with two of them spaced relatively apart from each other in the thickness direction X. The second locking structures 1222 can be integrally formed on the inner core housing 1111, uniquely corresponding to the first locking structures 1221.

[0074] For example, in connection with Fig. As can be seen in Figure 7, the headphones 10 can comprise a flexible printed circuit board 16, wherein the flexible printed circuit board 16 can be arranged at least partially in the receiving chamber 124 to be connected to the electronic element 15, and extends into the core housing 111, so that the electronic element 15 is connected to the main control circuit board 13 via the flexible printed circuit board 16. For example, it is provided that the electronic element 15 is soldered to one end of the flexible printed circuit board 16 by means of surface-mount technology (SMT), wherein the other end of the circuit board of the flexible printed circuit board 16 and the main control circuit board 13 are snapped together via a BTB connector.The loudspeaker 112 can be arranged such that it is connected to the flexible circuit board 16 along one of its extension paths, for example, by soldering a connecting wire of the loudspeaker 112 to a corresponding area of ​​the flexible circuit board 16. This also connects the loudspeaker 112 to the main control circuit board 13 via the flexible circuit board 16, so that the connecting wire of the loudspeaker 112 does not need to be extended to connect to the main control circuit board 13. This simplifies the wiring structure of the headphones 10 and reduces production costs.

[0075] For example, in connection with the Fig. 16 and Fig. As can be seen in Figure 15, the adapter housing 122 can be pre-formed with a through-hole 1251, which communicates with the receiving chamber 124, and the electronic element 15 can comprise an electrode clamp 151, which is at least partially arranged in the through-hole 1251. The electrode clamp 151 can be either an extendable elastic component, such as a pogo pin, or a non-extendable rigid component, such as a metal pin. The diameter of the through-hole 1251 can be larger than the outer diameter of the electrode clamp 151 to facilitate subsequent retrofitting of the electrode clamp 151. Of course, the electrode clamp 151 can also be formed as a single unit with the adapter housing 122.Furthermore, it is provided that the electrode clamp 151 can be oriented towards the ear when worn, so that it is not visible when worn, which contributes to improving the optical quality of the headphones 10 when worn.

[0076] It should be noted that if the electrode clamp 151 is designed as such a retractable elastic component, such as a pogo-PIN, the extension direction of the electrode clamp 151 can be its extension and retraction direction; and if the electrode clamp 151 is designed as such a non-retractable rigid component, such as a metal pin, the extension direction of the electrode clamp 151 can be a direction in which its axis is located.

[0077] Furthermore, it is provided that several electrode clamps 151 may be provided as needed, for example for charging, testing, etc.

[0078] In some embodiments, the electrode clamps 151 may comprise a positive charging clamp 1511 and a negative charging clamp 1512, spaced apart from each other, with the positive charging clamp 1511 and the negative charging clamp 1512 each being arranged in their respective through-holes 1251 to facilitate charging the headphones 10 by the electrode clamps 151. Alternatively, only one of the positive charging clamp 1511 and the negative charging clamp 1512 may be arranged on the adapter housing 122, and the other may be arranged on another housing for the hook structure 12, for example, the battery housing 123 or the inner core housing 1111.

[0079] In some embodiments, the electrode terminals 151 may include a test terminal 1513, which is arranged at a distance from the positive charging terminal 1511 and the negative charging terminal 1512. The test terminal 1513 can be used for testing functions such as a charging test or to verify whether the headphones 10 have been inserted into or removed from a charging case. Of course, the test terminal 1513 can also be replaced by electronic elements such as Hall sensors.

[0080] In some embodiments, it is provided that, when viewed in the extension direction of the electrode terminals 151, the connecting lines between each of the positive charging terminal 1511, the negative charging terminal 1512 and the test terminal 1513 can form a triangle, such as an equilateral triangle.

[0081] In some embodiments, when viewed in the direction of extension of the electrode terminals 151, the positive charging terminal 1511, the negative charging terminal 1512, and the test terminal 1513 can be spaced apart from one another in a line segment, such as a straight line segment. The distance between the positive charging terminal 1511 and the negative charging terminal 1512 can be greater than the distance between the negative charging terminal 1512 and the test terminal 1513. For example, the negative charging terminal 1512 is located between the positive charging terminal 1511 and the test terminal 1513, and the distance between the positive charging terminal 1511 and the negative charging terminal 1512 is greater than the distance between the negative charging terminal 1512 and the test terminal 1513. As another example, the test terminal 1513 is located between the positive charging terminal 1511 and the negative charging terminal 1512.This maximizes the distance between the positive charging terminal 1511 and the negative charging terminal 1512 when space is limited for arranging the electrode terminals 151 on the adapter housing 122, thus helping to avoid a short circuit between the two.

[0082] For example, in connection with Fig. As can be seen in Figure 15, the adapter housing 122 can be provided with a shoulder 126 on its outer surface, with the through holes 1251 extending further through the shoulder 126, so that the multiple electrode clamps 151 are exposed at each shoulder 126. This flattens any uneven areas of the adapter housing 122 caused by a certain curvature, thus facilitating the arrangement of the electrode clamps 151. The positive charging clamp 1511, the negative charging clamp 1512, and the test clamp 1513 can be arranged successively at intervals along the length of the shoulder 126.

[0083] For example, in connection with the Fig. As can be seen from Figures 15 to 17, the hook structure 12 can encompass a magnet 127, with the magnet 127 and the electrode clamps 151 being exposed on the same side of the adapter housing 122. This means that both can be visible on the same side of the adapter housing 122, so that the magnet 127 is closer to the external environment towards which the exposed ends of the electrode clamps 151 point. This reduces the distance between the magnet 127 and a magnetic structure for a charger, such as the charging box, for interaction with the magnet 127, or the distance between the magnet and a Hall sensor used for interaction with the magnet 127. This contributes to improving the reliability of functions such as charging and testing.The magnet 127 and the electrode clamps 151 can be arranged adjacent to each other to allow the magnet 127 to interact with the magnetic structure of the charger, such as the charging box, so that the electrode clamps 151 interact with the electrode clamps of the charger to facilitate charging. Accordingly, the shoulder 126 can project beyond the adapter housing 122 around the magnet 127; that is, the magnet 127 can be lower than the shoulder 126 to facilitate contact between the electrode clamps 151 and the electrode clamps of the charger, such as the charging box. Naturally, in the embodiment where the magnet 127 interacts with the Hall sensor of the charger, such as the charging box, for testing purposes, the magnet 127 and the electrode clamps 151 are arranged adjacent to each other.It is also possible that the electrode clamps for the charger, such as the charging box, which are used to interact with the electrode clamps 151, and the Hall sensor are arranged adjacent to each other, which helps to reduce the area required for the charger, such as the charging box, which is used to house the aforementioned electrode clamps and the aforementioned Hall sensor.

[0084] Furthermore, it is provided that the hook structure 12 can comprise a flexible coating 128, wherein the hardness of the flexible coating 128 is lower than the hardness of the adapter housing 122. The adapter housing 122 can be a plastic part. The flexible coating 128 can consist of silicone, rubber, or other materials and can be formed on the adapter housing 122 by injection molding, bonding with an adhesive, or by other means. It is further provided that the flexible coating 128 can cover the adapter housing 122 and the magnet 127, so that the magnet 127 is not exposed, but the electrode clamps 151 are exposed; that is, the magnet 127 is not visible, but the electrode clamps 151 are.This makes it possible not only to meet the application requirements of the electrode clamps 151, but also to conceal the magnet 127, preventing it from being exposed and worn or impairing its optical quality. Furthermore, the flexible coating 128 also contributes to improving the comfort of the headphones 10 when worn. The thickness of the flexible coating 128 is less than the thickness of the adapter housing 122.

[0085] For example, in connection with Fig. As can be seen in Figure 16, the adapter housing 122 can be pre-formed with a blind hole 1252, which is not in communication with the receiving chamber 124, in order to increase the water and dust tightness of the receiving chamber 124. The magnet 127 can be arranged at least within the blind hole 1252 and exposed through an open end of the blind hole 1252. This is advantageous not only for reducing the thickness of the adapter housing 122 in the area of ​​the magnet 127, but also for improving the optical quality of the headphones 10 in the area of ​​the magnet 127. Of course, the blind hole 1252 can also be configured as a through hole.

[0086] For example, in connection with Fig. As can be seen from Figure 15, when viewed in the direction of extension of the electrode clamps 151, the multiple electrode clamps 151 can be spaced apart from one another in a line segment, such as a straight or curved line segment. The magnet 127 can be located on any side of this line segment, or the magnet 127 can intersect this line segment and lie at least partially between any two adjacent electrode clamps 151. For example, it is provided that a magnet 127 is located entirely on one side of this line segment, or that the magnet intersects this line segment and lies entirely between any two adjacent electrode clamps 151.As a further example, it is provided that two magnets 127 are provided, one of these magnets 127 being located entirely on one side of the aforementioned line segment and the other magnet 127 being located entirely on the other side of the aforementioned line segment. Furthermore, it is provided, for example, that one magnet 127 is provided, wherein a part of the magnet 127 intersects the aforementioned line segment and lies between any two adjacent electrode clamps 151, and the other part of the magnet is located below the electrode clamps 151 in the aforementioned direction of extension.

[0087] For example, in connection with Fig. As can be seen in Figure 15, the multiple electrode clamps 151 can comprise the positive charging clamp 1511, the negative charging clamp 1512, and the test clamp 1513, which are arranged in a straight line segment. The magnet 127 can be located on one side of this straight line segment. Furthermore, it is provided that, when viewed in the direction of extension of the electrode clamps 151, there are a first distance, a second distance, and a third distance between the center of the magnet 127 on the one hand and the center of the positive charging clamp 1511, the negative charging clamp 1512, and the test clamp 1513, respectively, the third distance being larger than the first and second distances in order to ensure the reliability of the charging process.It should be noted that in the embodiment in which the hook structure 12 is provided with the flexible coating 128, the flexible coating 128 can first be removed in order to easily determine the relative positional relationship between the magnet 127 on the one hand and the positive charging terminal 1511, the negative charging terminal 1512 and the test terminal 1513 on the other.

[0088] For example, in connection with the Fig. As can be seen from Figures 16 to 18, the electronic element 15 can comprise the electrode clamps 151 and a microphone 152, wherein the adapter housing 122 can be pre-configured with the recording chamber 124 and the through-holes 1251 and 1253, each of which communicates with the recording chamber 124. Due to the different functions of the electrode clamps 151 and the microphone 152, the through-holes 1251 and 1253 can be located on different side walls of the adapter housing 122. Accordingly, the electrode clamps 151 can be at least partially arranged in the through-holes 1251. The microphone 152 can be arranged in the recording chamber 124 and pick up sound (e.g., the user's voice or ambient sounds) outside the headphones 10 through the through-hole 1253.This optimized arrangement of the relative positions between the electrode clamps 151 and the microphone 152 allows for efficient use of the space in the recording chamber 124, resulting in a more compact and smaller design for the headphone 10. Furthermore, the headphone 10 is designed to include a support assembly 17, which is at least partially located within the recording chamber 124. This support assembly 17 can support and secure the electrode clamps 151 and the microphone 152 to the side walls corresponding to the through-holes 1251 and 1253, respectively. This is advantageous not only for preventing the electrode clamps 151 and the microphone 152 from detaching from the adapter housing 122, but also for increasing the water and dust resistance of the electronic element 15. Moreover, this design results in a simple and reliable structure.

[0089] For example, in connection with Fig. It can be seen in Figure 18 that the flexible printed circuit board 16 can comprise a first printed circuit board section 161, a second printed circuit board section 162, and a third printed circuit board section 163, which are formed in one piece, wherein the electrode clamps 151 are soldered to the first printed circuit board section 161, wherein the second printed circuit board section 162 is bent relative to the first printed circuit board section 161, and wherein the microphone 152 is soldered to the third printed circuit board section 163 and bent relative to the second printed circuit board section 162. In other words, after bending the flexible printed circuit board 16 twice, the first printed circuit board section 161, the second printed circuit board section 162, and the third printed circuit board section 163 can correspond to three sides of a six-sided structure, arranged in pairs.In this arrangement, one end of the second circuit board section 162, which is further away from the third circuit board section 163, is connected to the first circuit board section 161, and the remaining part of the second circuit board section 162 is not connected to the first circuit board section 161. This allows, after the flexible circuit board 16, the electrode clamps 151, and the microphone 152 are assembled on it in the adapter housing 122, for an operator to first press the end of the second circuit board section 162, which is connected to the first circuit board section 161, so that it is as flush as possible with the first circuit board section 161, in order to avoid interference with the support arrangement 17 to be assembled subsequently.

[0090] In some embodiments, the adapter housing 122 can comprise two housings whose parting line is perpendicular to the direction of extension of the electrode clamps 151, with the two housings being interlocked and forming the receiving chamber 124. The support arrangement 17 can be formed integrally with one of the housings to support (or press against) the electrode clamps 151 and the microphone 152 when the two housings are interlocked. Alternatively, at least one of a first support element for supporting the electrode clamps 151 and a second support element for supporting the microphone 152 for the support arrangement 17 can be designed independently of the adapter housing 122 to support (or press against) the electrode clamps 151 and the microphone 152 when the two housings are interlocked.Alternatively, it is also possible to assemble the support arrangement 17 after the two housings have been locked together, in order to support (or press against) the electrode clamps 151 and the microphone 152 respectively.

[0091] In some embodiments, a portion of the adapter housing 122, corresponding at least to the receiving chamber 124, forms a complete housing structure. In this case, at least the first support element, consisting of the first support element for supporting the electrode clamps 151 and the second support element for supporting the microphone 152 for the support arrangement 17, can be designed independently of the adapter housing 122, at least to facilitate the assembly of the electrode clamps 151.

[0092] For example, in connection with Fig. As can be seen in Figure 18, the support arrangement 17 can be designed independently of the adapter housing 122 and is inserted into the receiving chamber 124. Because the support arrangement 17, the electrode clamps 151, and the microphone 152 can each be designed independently of the adapter housing 122, they can be assembled in a specific sequence. This helps to avoid unnecessary structural interference and improve assembly efficiency.

[0093] In some embodiments, both the first support element for supporting the electrode clamps 151 and the second support element for supporting the microphone 152 for the support arrangement 17 can each be designed independently of the adapter housing 122; that is, the first support element and the second support element are independent of each other in order to support (or press against) the electrode clamps 151 and the microphone 152, respectively. This allows the first support element and the second support element for the support arrangement 17 to be designed differently depending on the actual requirements.

[0094] In some embodiments, the support arrangement 17 can be formed as a single, integrally molded component, meaning that the first support element for supporting the electrode clamps 151 and the second support element for supporting the microphone 152 are connected to each other for the support arrangement 17. This is advantageous not only for simplifying the structure of the support arrangement 17, but also for avoiding the need to assemble the first and second support elements due to their small size. Furthermore, once in position, the support arrangement 17 can be firmly attached to a chamber wall of the receiving chamber 124. This results in a certain degree of damping when inserting or removing the support arrangement 17, leading to a simple and reliable structure.Accordingly, a guide groove and a limiting groove can be provided on the chamber wall of the receiving chamber 124, which interact with the support arrangement 17. Naturally, the support arrangement 17 can also be further bonded to the chamber wall of the receiving chamber 124 by a dispensing process.

[0095] For example, in connection with the Fig. 17 and Fig. 18 shows that the support arrangement 17 and the receiving chamber 124 are at least partially oriented in at least one reference direction perpendicular to the direction of use of the support arrangement 17 relative to the receiving chamber 124 (e.g., to the direction indicated by the arrows in Fig. 17 and Fig. The support arrangement 17 (in the direction specified in section 18) can be dimensioned such that it gradually decreases in size in the aforementioned direction of use, in order to facilitate its insertion into a space between the electrode clamps 151 and the microphone 152. In other words, the support arrangement 17 can be dimensioned, at least partially, in at least one reference direction perpendicular to the aforementioned direction of use, such that it gradually decreases in size in the direction of use. Likewise, the recording chamber 124 can be dimensioned, at least partially, in the same reference direction, such that it gradually decreases in size in the aforementioned direction of use, with the change tendencies of the two being the same or similar. This helps to ensure that the support arrangement 17 is firmly attached to the chamber wall of the recording chamber 124 after insertion.

[0096] For example, in connection with the Fig. As can be seen from Figures 16 to 18, the chamber wall of the receiving chamber 124 can comprise a first chamber wall 1241 and a second chamber wall 1242, which are arranged side by side and spaced apart from each other, as well as a third chamber wall 1243, which connects the first chamber wall 1241 to the second chamber wall 1242. The through-hole 1251 can be provided on the first chamber wall 1241 and the through-hole 1253 on the third chamber wall 1243. Accordingly, the support arrangement 17 can, for example, be in the form of an L-shaped structure comprising a base plate 171 and a first side plate 172 connected to the base plate 171. A main surface can be arranged on one side of the base plate 171 opposite the first chamber wall 1241 and support the electrode clamps 151. A main surface on one side of the first side plate 172 can be arranged opposite the third chamber wall 1243 and support the microphone 152.This allows the base plate 171 to support the electrode clamps 151 and the first side plate 172 to support the microphone 152, after the electrode clamps 151 and the microphone 152 have been assembled in position and the support arrangement 17 has been inserted or positioned in the recording chamber 124 in the direction of use mentioned above.

[0097] Furthermore, it is provided that an orthogonal projection of the microphone 152 onto the first chamber wall 1241 can at least partially cover the electrode terminals 151, for example by having the microphone 152 cover part of the positive charging terminal 1511, which contributes to a more compact design of the individual substructures.

[0098] In some embodiments, the base plate 171 and the receiving chamber 124 can be dimensioned, at least partially, in a first reference direction RD1, which is perpendicular to the aforementioned direction of use and parallel to the main surface on the side of the base plate 171, such that they gradually decrease in size in the aforementioned direction of use. This means that the base plate 171 can be dimensioned at a front end or a rear end in the aforementioned direction of use, or in a section between the front end and the rear end, such that its dimensions remain unchanged with respect to the first reference direction RD1 in the aforementioned direction of use.The first side plate 172 and the receiving chamber 124 can be dimensioned in a second reference direction RD2, which runs perpendicular to the above-mentioned direction of use and parallel to the main surface on the side of the first side plate 172, such that their dimensions remain unchanged in the direction of use.

[0099] In some embodiments, the first side plate 172 and the receiving chamber 124 can be dimensioned, at least partially, in the second reference direction RD2, which is perpendicular to the aforementioned direction of use and parallel to the main surface on the side of the first side plate 172, such that they gradually decrease in size in the aforementioned direction of use. This means that the first side plate 172 can be dimensioned at a front end or a rear end in the aforementioned direction of use, or at a section between the front end and the rear end, such that its dimensions remain unchanged with respect to the second reference direction RD2 in the aforementioned direction of use.The base plate 171 and the receiving chamber 124 can be dimensioned in the first reference direction RD1, which runs perpendicular to the above-mentioned direction of use and parallel to the main surface on the side of the base plate 171, such that their dimensions remain unchanged in the above-mentioned direction of use.

[0100] In some embodiments, the first side plate 172 and the receiving chamber 124 can be dimensioned, at least partially, in the second reference direction RD2, which runs perpendicular to the aforementioned direction of use and parallel to the main surface on the side of the first side plate 172, such that they gradually become smaller in the aforementioned direction of use.

[0101] It should be noted that with regard to the support arrangement 17, the dimension of the base plate 171 in the first reference direction RD1 can simply be considered as the width of the base plate 171, and the dimension of the first side plate 172 in the second reference direction RD2 can simply be considered as the height of the first side plate 172.

[0102] For example, in connection with the Fig. As can be seen from Figures 16 to 18, the support arrangement 17 can comprise a second side plate 173 connected to the base plate 171, wherein the second side plate 173 and the first side plate 172 are arranged side by side and spaced apart from each other on the same side of the base plate 171, and wherein the second side plate 173 rests against the second chamber wall 1242 to provide the base plate 171 with a supporting force in the direction of the electrode clamps 151, which contributes to improving the supporting effect of the support arrangement 17 on the electrode clamps 151.In the embodiment in which the electrode clamps 151 comprise the positive charging clamp 1511 and the negative charging clamp 1512, which are spaced apart from each other in a direction perpendicular to the aforementioned direction of use, the second side plate 173 can be located between the positive charging clamp 1511 and the negative charging clamp 1512, so that the individual parts of the electrode clamps 151 are subjected to a uniform load. This contributes to a further improvement in the supporting effect of the support arrangement 17 on the electrode clamps 151.

[0103] For example, in connection with the Fig. As can be seen from Figures 16 to 18, the chamber wall of the receiving chamber 124 can include a fourth chamber wall 1244, which connects the first chamber wall 1241 to the second chamber wall 1242 and is opposite the third chamber wall 1243. The first chamber wall 1241 and the second chamber wall 1242 can essentially be designed as parallel, flat structures, and the third chamber wall 1243 and the fourth chamber wall 1244 can essentially be designed as arc-shaped structures extending away from each other, in order to maximize the volume of the receiving chamber 124 while keeping the volume of the adapter housing 122 limited. Accordingly, the support arrangement 17 can include a third side plate 174 connected to the base plate 171.The first side plate 172 and the third side plate 174 are located in a direction perpendicular to the aforementioned direction of use, each at both lateral edges of the base plate 171, and the second side plate 173 is located between the first side plate 172 and the third side plate 174. The third side plate 174 rests against the fourth chamber wall 1244 to provide the first side plate 172 with a supporting force towards the microphone 152, which contributes to improving the supporting effect of the support arrangement 17 on the microphone 152.

[0104] Furthermore, it is provided that, with regard to the base 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, in order to facilitate the attachment of the second side plate 173 to the second chamber wall 1242 and the attachment of the third side plate 174 to the fourth chamber wall 1244. Since the second side plate 173 and the third side plate 174 are not in direct contact with the electrode clamps 151 and the microphone 152, they can also perform a guiding function during the insertion of the support arrangement 17 into the recording chamber 124. Due to the comparatively greater height of the second side plate 173, the support arrangement 17 can accordingly include reinforcing ribs 175 that connect the second side plate 173 to the base plate 171.The reinforcing ribs 175 can be arranged on two opposite sides of the second side plate 173, which face the first side plate 172 and the third side plate 174 respectively.

[0105] For example, in connection with the Fig. As can be seen from Figures 15 to 17 and 9, the hook structure 12 can comprise an elastic metal wire 121, an adapter housing 122, a battery housing 123, and a conductor 129, wherein the two ends of the elastic metal wire 121 and the conductor 129 can each be connected to the adapter housing 122 and the battery housing 123, respectively, so that the conductor 129 extends along the elastic metal wire 121 and is inserted into the adapter housing 122 and the battery housing 123. Naturally, the conductor 129 can also be inserted into a predefined conductor guide channel only after the elastic metal wire 121 has been connected to the adapter housing 122 and the battery housing 123.The battery 14 can be arranged in the battery housing 123 and connected to the flexible circuit board 16 via the line 129, so that the battery 14 is also connected to the main control circuit board 13 via the flexible circuit board 16, which simplifies the wiring structure of the headphones 10 and reduces production costs. In other words, components such as the electrode clamps 151, the microphone 152, and the battery 14 for the hook structure 12 can be connected to the main control circuit board 13 via the flexible circuit board 16.

[0106] Furthermore, it is provided that the flexible coating 128 can also encase at least exposed parts of the elastic metal wire 121 and the conductor 129, as well as at least part of the battery 123, to facilitate the exposure of the conductor 129, which contributes to improving the optical quality of the headphones 10.

[0107] It should be noted that the adapter housing 122 can also be designed as a substructure of the core housing 111, for example, by forming the adapter housing 122 integrally with the inner core housing 1111, or by forming, for example, a part of the adapter housing 122 integrally with the inner core housing 1111 and the remaining part integrally with the outer core housing 1112. With the exception of the adapter housing 122, all other parts of the hook structure 12, such as an end of the elastic metal wire 121 located further away from the battery housing 123, or, for example, the battery housing 123 itself, are firmly connected to the core module 11, including the adapter housing 122, for example, by a pluggable connection.Accordingly, the positions of structural components such as the electrode clamps 151, the microphone 152 and the magnet 127 are also adjusted, although this will not be repeated here.

[0108] Based on the above relevant descriptions, the present application provides for a housing arrangement that may comprise a plastic housing, metallic functional elements, and a silicone coating. The metallic functional elements are arranged on the outside of the plastic housing. The silicone coating may be applied by injection molding, bonding with adhesive, or otherwise to a side of the metallic functional elements facing away from the plastic housing, as well as to a part of the plastic housing not covered by the metallic functional elements.By arranging the metallic functional patterns on the outer surface of the plastic housing (facing the silicone coating), as opposed to arranging them on the inner surface opposite the silicone coating, they are located further away from interference caused by other electronic elements within the housing assembly or closer to a signal-triggering source outside the housing assembly. This increases the interference immunity and sensitivity of the metallic functional patterns. The structure of the plastic housing can be identical or similar to that of the core housing 111 or its outer core housing 1112, and the structure of the silicone coating can be identical or similar to that of the flexible coating 1132, though this will not be repeated here.

[0109] In some embodiments, the metallic functional patterns can be configured as antenna patterns 1141 or touch patterns 1142. The antenna pattern 1141 is arranged on the outside of the plastic housing to increase the distance between the antenna pattern and other electronic elements inside the housing, thus increasing the antenna's clear area and thereby improving its immunity to interference. By arranging the touch pattern 1142 on the outside of the plastic housing, the distance between the touch pattern and an external signal-triggering source (e.g., a user's finger) can be reduced; that is, the touch distance is decreased, thus increasing the sensitivity of the touch pattern 1142 to user touch.

[0110] In some embodiments, the metallic functional patterns may comprise an antenna pattern 1141 and a touch pattern 1142, wherein the antenna pattern 1141 may peripherally surround the touch pattern 1142 in order to utilize the space on the outside of the plastic housing. The antenna pattern 1141 may be U-shaped and the touch pattern 1142 square.

[0111] In some embodiments, the thickness of the silicone coating can be thinner than the thickness of the plastic housing in order to further increase the interference resistance and sensitivity of the metallic functional patterns while simultaneously covering and protecting them with the silicone coating, and to reduce the volume of the housing arrangement.

[0112] The housing arrangement can serve as an example of a core housing for the loudspeaker 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, although this will not be repeated here.

[0113] Furthermore, it is intended that the housing arrangement can be used not only in headphones 10 but also in other electronic devices, such as smart glasses. The electronic device can comprise either a core module with a loudspeaker 112 or a main control circuit board 13, as well as a loudspeaker 112 and a battery 14, each coupled to the main control circuit board 13. The housing arrangement can serve to accommodate at least one of the electronic elements, such as the loudspeaker 112, the main control circuit board 13, or the battery 14, but also to support the loudspeaker 112 in its corresponding wearing position within the electronic device.It should be noted that with regard to electronic devices such as headphones and data glasses that are based on the principle of bone conduction, the loudspeaker 112 can be adaptively adjusted to a bone conduction loudspeaker, the basic structure of which is known to those skilled in the art and is not repeated here.

[0114] The present application provides a housing arrangement that may include a first housing, electrode clamps 151, a magnet 127, and a flexible coating 128. The electrode clamps 151 and the magnet 127 are exposed on the same side of the first housing. The flexible coating 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, but the electrode clamps 151 are. Thus, compared to the arrangement of the magnet 127 within the first housing, in the present technical solution the magnet 127 is located closer to the external environment, towards which the exposed ends of the electrode clamps 151 point.This reduces the distance between the magnet 127 and a magnetic structure for a charger, such as a charging box, for interaction with the magnet 127, or the distance between the magnet and a Hall sensor used for interaction with the magnet 127. This contributes to improving the reliability of functions such as charging and testing. Therefore, the housing arrangement can be used both in electrical devices, such as headphones 10 or smart glasses, and in chargers, such as the charging box. In other words, the electronic device can be either an electrical device or a charger. For the sake of simplicity, the first housing can be an adapter housing 122.

[0115] In some embodiments, the first housing may have through holes 1251 and a blind hole 1252, wherein the electrode clamps 151 may be arranged at least partially in the through holes 1251, and wherein the magnet 127 may be arranged at least partially in the blind hole 1252 and is exposed through an open end of the blind hole 1252. This is advantageous not only for reducing the thickness of the first housing in the area of ​​the magnet 127, but also for improving the optical quality of the first housing in the area of ​​the magnet 127. Of course, the blind hole 1252 can also be configured as a through hole.

[0116] In some embodiments, the first housing may be provided with a shoulder 126 on its outer surface, wherein the shoulder 126 is arranged adjacent to the magnet 127 and projects beyond the first housing around the magnet 127, and wherein the through-holes 1251 extend further through the shoulder 126, so that the multiple electrode clamps 151 are exposed at each shoulder 126. This flattens any uneven areas of the first housing caused by a certain curvature, thus facilitating the arrangement of the electrode clamps 151. The shoulder 126 may be elongated, resulting in a simple and reliable structure.

[0117] In some embodiments, the housing arrangement may include a flexible printed circuit board 16, wherein the electrode terminals 151 are connected to the flexible printed circuit board 16 to simplify the wiring of the electrode terminals 151. The first housing may be configured with a receiving chamber 124, wherein the flexible printed circuit board 16 may be arranged at least partially within the receiving chamber 124. The through holes 1251 communicate with the receiving chamber 124, and the blind hole 1252 does not communicate with the receiving chamber 124, in order to improve the water and dust tightness of the first housing.

[0118] In some embodiments, the housing arrangement may comprise a second housing, an elastic metal wire 121, and a conductor 129, wherein the two ends of the elastic metal wire 121 and the conductor 129, respectively, are connectable to the first housing and the second housing, such that the conductor 129 extends along the elastic metal wire 121 and is inserted into the first housing and the second housing. For the sake of simplicity, the second housing may be a battery housing 123. Furthermore, a battery 14 is arranged in the second housing, the battery 14 being connected to the flexible circuit board 16 via the conductor 129; that is, both the battery 14 and the electrode terminals 151 are connected to the flexible circuit board 16 to simplify the wiring.Accordingly, the flexible coating 128 further envelops the elastic metal wire 121 and the conductor 129 to facilitate the exposure of the conductor 129.

[0119] In some embodiments, the housing arrangement is provided for in a headphone 10 and may include a third housing for receiving a loudspeaker 112, wherein the third housing is pluggably attached to the first housing. For the sake of simplicity, the third housing may be a core housing 111.

[0120] The present application provides a housing arrangement that may comprise a first housing, electrode clamps 151, a microphone 152, and a support arrangement 17. The first housing may be provided with a receiving chamber 124 and through-holes 1251 and 1253, which communicate with the receiving chamber 124. The through-holes 1251 and 1253 are located on different side walls of the first housing. The electrode clamps 151 may be arranged at least partially in the through-holes 1251. The microphone 152 may be arranged in the receiving chamber 124 and receive sound outside the housing arrangement via the through-hole 1253. Furthermore, the support arrangement 17 is provided to be located in the receiving chamber 124 and to support and fasten the electrode clamps 151 and the microphone 152 to the side walls corresponding to the through-holes 1251 and 1253, respectively.This is advantageous not only for avoiding the separation of the electrode clamps 151 and the microphone 152 from the first housing, but also for increasing the water and dust resistance of the electrode clamps 151 and the microphone 152. Furthermore, it results in a simple and reliable structure. For the sake of simplicity, the first housing can be either the adapter housing 122, the core housing 111, or a housing structure formed in one piece from the core housing 111 and the adapter housing 122.

[0121] In some embodiments, it is provided that the support arrangement 17 can be designed independently of the first housing and is inserted into the receiving chamber 124.

[0122] In some embodiments, it is provided that the support arrangement 17 can be designed as a one-piece molded component.

[0123] In some embodiments, the housing arrangement is provided for in a headphone 10 and may include a third housing for receiving a loudspeaker 112, which is pluggably attached to the first housing. The first housing may be the adapter housing 122 and the third housing the core housing 111.

[0124] Furthermore, it is intended that the housing arrangement can be used not only in headphones 10 but also in other electronic devices, such as smart glasses. The electronic device can comprise a main control circuit board 13, a loudspeaker 112, and a battery 14, each coupled to the main control circuit board 13. The housing arrangement can serve to accommodate at least one of the electronic elements, such as the loudspeaker 112, the main control circuit board 13, or the battery 14, but can also support the loudspeaker 112 in its corresponding wearing position within the electronic device.It should be noted that with regard to electronic devices such as headphones and data glasses that are based on the principle of bone conduction, the loudspeaker 112 can be adaptively adjusted to a bone conduction loudspeaker, the basic structure of which is known to those skilled in the art and is not repeated here.

[0125] In connection with the Fig. 19 and Fig. Figure 20 shows by way of example that the headphones 10 can comprise a core module 11 and a hook structure 12 connected to the core module 11. The hook structure 12 can be either a structure bent or angled in the shape of a hook or a rod structure that does not extend parallel to the direction of extension of the core module 11. The rod structure, together with the core module 11, can function as a "hook," i.e., it allows the headphones to be worn on the ear. Accordingly, the charging case 20 can comprise a lower housing assembly 21. The lower housing assembly 21 can be provided with two profiled recesses 211, each serving to receive the headphones 10. Each of the profiled recesses 211 can comprise a first profiled recess area 2111, corresponding to the core module 11, and a second profiled recess area 2112, corresponding to the hook structure 12.The second profiled recess areas 2112 of the two profiled recesses 211 are arranged such that they intersect. When a headphone 10 is inserted into each of the two profiled recesses 211, the hook structures 12 of the two headphones 10 can overlap and, for example, be stacked on top of each other. This reduces the volume of the charging case 20, making it smaller and easier for the user to carry. It should be noted that the term "overlap" refers to the presence of at least one overlapping area between the two recesses, including partial and complete overlap.

[0126] Combined with Fig. In some embodiments, the projections of the first profiled recess area 2111 and the second profiled recess area 2112 overlap in the first reference direction. The projections of the first profiled recess area 2111 and the second profiled recess area 2112 also overlap in the second reference direction. The first reference direction is perpendicular to the second reference direction. When the headphones 10 are inserted into the profiled recess 211, the projection length of the charging box 20 occupied by the second profiled recess area 2112 can overlap in the first reference direction, as can the projection length of the charging box 20 occupied by the first profiled recess area 2111.Furthermore, the projection length of the charging box 20, occupied by the second profiled recess area 2112, can overlap in the second reference direction with the projection length of the charging box 20, occupied by the first profiled recess area 2111, in the second reference direction. This reduces the volume of the charging box 20 accordingly, making it easier for the user to carry. The extent of this reduction in the volume of the charging box 20 depends on the degree of overlap of the projection lengths in the first reference direction and the degree of overlap of the projections in the second reference direction. In other words, when the headphones 10 are inserted into the profiled recess 211, the projections of the core module 11 and the hook structure 12 of the headphones 10 overlap in the first reference direction, and the projections of the core module 11 and the hook structure 12 overlap in the second reference direction.It should be noted that the first and second reference directions mentioned above refer to two mutually orthogonal directions that run perpendicular to the thickness direction of the loading box 20. With regard to the first reference direction, several different embodiments are possible in the present application, which are described below by way of example. The following embodiments for the first reference direction include at least one of the following embodiments, which will not be discussed in detail. 1) In some embodiments, the first reference direction may refer to an arrangement direction of the two profiled recesses 211 (i.e., a connecting line between the geometric centers of the two profiled recesses 211) or to a direction perpendicular to the arrangement direction if the two profiled recesses 211 are spaced apart from each other in the lower housing arrangement 21. 2) In some embodiments, it is provided that the first reference direction may refer to a direction that is perpendicular or parallel to the axis of rotation of the upper housing arrangement 24 in relation to the lower housing arrangement 21, when the opening or closing of the charging box 20 is achieved by rotating the upper housing arrangement 24 in relation to the lower housing arrangement 21. 3) In some embodiments, it is provided that the first reference direction may refer to a direction that is perpendicular or parallel to the axis of symmetry of the two profiled recesses 211, if the two profiled recesses 211 are arranged symmetrically about the axis.

[0127] Optionally, the first reference direction can refer to a direction of a connecting line of the same feature points of the two profiled recesses 211 or to a direction perpendicular to the direction of the connecting line.

[0128] It should be noted that the loading box 20 has a thickness direction and the profiled recess 211 has a depth direction. In conjunction with Fig. As can be seen in paragraph 24, in the present application, the thickness direction of the loading box 20 and the depth direction of the profiled recess 211 can each refer to a direction perpendicular to the contact surface between the loading box 20 and a horizontal platform surface, after the loading box 20 has been stably placed on the horizontal platform surface. The same applies to the thickness direction of the loading box 20 and the depth direction of the profiled recess 211 in the following embodiments, which will not be discussed in detail here. It should be noted that deviations in perpendicularity may occur in the actual production process for technological reasons. In other words, the expression "the two objects of the present application are perpendicular to each other" in the actual products refers to the fact that the perpendicularity of the two objects is within the permissible tolerance range.Perpendicularity represents a positional tolerance, the precise tolerance range of which is defined in the relevant national standards. The same applies to the degree of symmetry, which will not be discussed in detail here. On the other hand, the overlap of the projections in the present application encompasses the following two cases: partial and complete overlap of the projections.

[0129] Combined with Fig. In some embodiments, 19 provides that in the first reference direction, the projections of the first profiled recess area 2111 and a first part 2112a of the second profiled recess area 2112 overlap. When the headphones 10 are inserted into the profiled recess 211, the dimensions of the charging box 20 occupied by the first part 2112a of the second profiled recess area 2112 and the dimensions of the charging box 20 occupied by the first profiled recess area 2111 can overlap. In other words, in the second reference direction, the charging box 20 can accommodate both the first part 2112a of the second profiled recess area 2112 and the first profiled recess area 2111 with a first dimension.The first dimension above is smaller than the sum of the dimensions of the first part 2112a of the second profiled recess area 2112 and of the first profiled recess area 2111 in the second reference direction. Provided that the charging case 20 securely holds the headphones 10, this allows the dimensions of the charging case 20 in the second reference direction to be reduced, making it easier for the user to carry.

[0130] In some embodiments, the projections of a second part 2112b of the second profiled recess area 2112 and of the first profiled recess area 2111 overlap in the second reference direction, which is perpendicular to the first reference direction. When the headphones 10 are inserted into the profiled recess 211, the dimensions of the charging box 20 occupied by the second part 2112b of the second profiled recess area 2112 and the dimensions of the charging box 20 occupied by the first profiled recess area 2111 can overlap. In other words, the charging box 20 can accommodate both the second part 2112b of the second profiled recess area 2112 and the first profiled recess area 2111 in the first reference direction with a second dimension.The second dimension above is smaller than the sum of the dimensions of the second part 2112b of the second profiled recess area 2112 and the first profiled recess area 2111 in the first reference direction. Provided that the charging case 20 securely holds the headphones 10, this allows the dimensions of the charging case 20 in the first reference direction to be reduced, making it easier for the user to carry.

[0131] In some embodiments, the projections of the first profiled recess area 2111 and a first part 2112a of the second profiled recess area 2112 overlap in the first reference direction. Similarly, the projections of the first profiled recess area 2111 and the second part 2112b of the second profiled recess area 2112 overlap in the second reference direction. In this way, the overlap ratio of the projections of the first profiled recess area 2111 and the second profiled recess area 2112 in the first and second reference directions can be adjusted for the loading box 20, thus allowing for more advantageous design of the dimensions of the loading box 20 in the first and second reference directions.This allows the shape of the charging box 20 to be designed to be relatively square, which not only looks more aesthetically pleasing, but can also make it easier for the user to store the charging box 20 in their bag or backpack.

[0132] In some cases, it is specifically provided that the first part 2112a of the second profiled recess area 2112 corresponds to the battery housing 123 in the hook structure 12, and the second part 2112b of the second profiled recess area 2112 corresponds to an elastic part of the hook structure 12. The overlap of the projections of the first profiled recess area 2111 and the first part 2112a of the second profiled recess area 2112 in the first reference direction means that when the headphones 10 are inserted into the profiled recess 211, the projections of the battery housing 123 and the core module 11 overlap in the first reference direction.The overlap of the projections of the second part 2112b of the second profiled recess area 2112 and of the first profiled recess area 2111 means that when the headphones 10 are inserted into the profiled recess 211, the projections of the elastic part and the core module 11 overlap in the second reference direction.

[0133] Furthermore, it is provided that, in the second reference direction, the second part 2112b of the second profiled recess area 2112 is located on one side of the first profiled recess area 2111, which faces away from the edge of the lower housing assembly 21 next to the first profiled recess area 2111. In other words, the second profiled recess areas 2112 of the two profiled recess areas 211 are arranged approximately relative to each other. This allows the parts of the hook structures 12 of the two headphones 10, which each have a smaller thickness compared to the core modules 11, to be arranged approximately relative to each other when the two headphones 10 are inserted.Furthermore, the second profiled recess areas 2112 of the two profiled recesses 211 are arranged such that they intersect, causing the hook structures 12 of the two headphones 10 to overlap when one headphone 10 is inserted into each of the two profiled recesses 211. Since the hook structure 12 of the headphone 10 is also narrower than the core module 11, the space utilization in the charging box 20 can be further increased after the two hook structures 12 are brought into proximity and thus overlap, which contributes to reducing the volume of the charging box 20.

[0134] Combined with Fig. In some embodiments, the hook structure 12 comprises the battery housing 123 and an elastic part that connects the battery housing 123 to the core module 11. The two second profiled recess areas 2112 are arranged such that the elastic parts of the earphones 10 overlap when the two earphones 10 are held. The elastic part is narrower than the battery housing 123, so that the overlapping of the elastic parts of the two earphones 10 reduces the space required by the hook structure 12 in the thickness direction of the charging box 20, thus reducing the volume of the charging box 20. The two elastic parts overlap in various ways. For example, the adjacent edge regions of the two elastic parts can overlap to form an overlapping area.Alternatively, the elastic part is designed to be arc-shaped, with the two elastic parts overlapping. Since each elastic part has a certain volume, two unconnected overlapping areas are created, the geometric centers of which form two overlap points. Optionally, the two profiled recesses 211 are mirror-symmetrical with respect to the connecting line between the two overlap points, which is considered the axis of symmetry. The direction of the connecting line between the two overlap points runs parallel to the first reference direction and the second reference direction, respectively.

[0135] In some further embodiments, the second profiled recess areas 2112 of the two profiled recesses 211 are arranged independently of each other. This allows the two headphones 10 to be held relatively independently of each other in the charging case 20, so that the two headphones 10 do not affect each other when removed, thus making individual removal easier for the user.

[0136] Furthermore, the charging box 20 is provided to include a main control circuit board 221 within the lower housing assembly 21 and electrode terminals 222 arranged on the main control circuit board 221. The electrode terminals 222 can be arranged in several groups, for example, two groups, as required. Accordingly, when one of the headphones 10 is placed in the charging box 20, the electrode terminals 151 of the headphones 10 can be uniquely connected to the electrode terminals 222 of the charging box 20 to fulfill the requirements for charging, testing, and other functions. The electrode terminals 222 can therefore include a positive power supply terminal and a negative power supply terminal. They can also include a test terminal.The connecting lines between any two of them can form a triangle, for example an equilateral triangle, or these clamps can be spaced apart from each other along a straight line, for example at a distance from each other and collinear.

[0137] Combined with Fig. 7 and Fig. In one embodiment, figure 24 provides that the electrode clamps of the charging box 20 are first electrode clamps (i.e., electrode clamps 222) and the electrode clamps of the headphones 10 are second electrode clamps (i.e., electrode clamps 151). The first electrode clamps are exposed at the profiled recess 211, so that when the headphones 10 are inserted into the profiled recess 211, the second electrode clamps and the first electrode clamps are connected to each other.

[0138] In some embodiments, it is particularly provided that the first electrode clamps can be arranged in the first profiled recess area 2111 and the second electrode clamps on the core module 11. Since the core module 11 is designed as a hard structure with high rigidity compared to the hook structure 12, this creates a relatively smooth and reliable contact surface for connecting the first electrode clamps to the second electrode clamps, thereby increasing the stability of the connection between the first and second electrode clamps. In some embodiments, a magnetic element (for example, the first magnetically attractive element in the embodiment described above) can be provided in the core module 11, and a magnetically attractive structure that interacts with the magnetic element of the core module 11 can be provided in the charging box 20.This allows the connection of the first electrode clamps with the second electrode clamps to be more stable through the magnetically attractive interaction between the magnetic element of the core module 11 and the magnetically attractive structure of the charging box 20.

[0139] In some embodiments, the hook structure 12 can comprise an elastic part and a hard part that connects the core module 11 to the elastic part. The elastic part can be formed, at least in part, by the elastic metal wire 121 mentioned above, making it elastically deformable. The hard part can be the adapter housing 122, or the electrode clamps 151 and the magnet 127 provided therein, and the like. The first electrode clamps are exposed at the second profiled recess area 2112, and the second electrode clamps are provided on an inner side of the hard part (where, when the headphones 10 are received in the profiled recess 211, the hard part faces the side of the profiled recess 211, see MS in Fig. 7) In this way, the second electrode clamps and the associated mechanical and electrical structures are arranged in the hook structure 12, thereby simplifying the structure of the core module 11. The hard part has a greater stiffness than the elastic part, so that by arranging the second electrode clamps in the hard part, the success rate and stability of connecting the second electrode clamps to the first electrode clamps can be increased when the headphones 10 are placed in the charging case 20.

[0140] Furthermore, it is planned that the inside of core module 11 (see IS in Fig. 7) and the inside of the hard part (see MS in Fig. 7) are inclined towards each other. Thus, the earphone 10 can be easily adapted to the ear by inclined the inner surface of the core module 11 and the inner surface of the hard part towards each other. In particular, this makes it possible for the hard part to pass the tragus as the core module 11 protrudes into the concha and then connect with the elastic part behind the ear, thereby reducing interference between the earphone 10 and the ear and improving comfort when wearing the earphone 10. In some embodiments, the profiled recess 211 of the charging case 20 can be designed such that the first profiled recess area 2111 for receiving the core module 11 and a portion of the second profiled recess area 2112 for receiving the hard part are inclined towards each other to better adapt to the earphone 10.In contrast to the case in which the first profiled recess area 2111 for receiving the core module 11 and the area of ​​the second profiled recess area 2112 which receives the hard part are arranged parallel to each other, when viewed in the thickness direction of the loading box 20, a reduction in the dimension of the projection of the loading box 20 in the thickness direction and thus easier handling is made possible by the fact that the profiled recess 211 is designed such that the first profiled recess area 2111 for receiving the core module 11 and the area of ​​the second profiled recess area 2112 which receives the hard part are inclined to each other.In contrast to the case in which the first profiled recess area 2111 for receiving the core module 11 and the area of ​​the second profiled recess area 2112 which receives the hard part are arranged perpendicular to each other, when storing the headphones 10 in the charging box 20, a reduction in the required dimension in the thickness direction of the charging box 20 and at the same time an improvement in the user's handling when storing the headphones 10 is made possible by the fact that the profiled recess 211 is designed such that the first profiled recess area 2111 for receiving the core module 11 and the area of ​​the second profiled recess area 2112 which receives the hard part are inclined to each other.In summary, the charging box 20 can be better adapted to the headphones 10 by designing the profiled recess 211 such that the first profiled recess area 2111 for receiving the core module 11 and the area of ​​the second profiled recess area 2112, which receives the hard part, are inclined towards each other. Furthermore, the charging box 20 is optimized with respect to its thickness, length, and width dimensions, thereby facilitating its portability for the user and meeting the ergonomic requirements of the charging box 20.

[0141] With reference to Fig. 24 is exemplified in some embodiments by which the extension direction of the first electrode clamps is inclined relative to the thickness direction of the charging box 20 (see angle β in Fig. 24). In this way, the space required for the first electrode clamps in the thickness direction of the charging box 20 can be reduced, which contributes to a reduction in the volume of the charging box 20. Furthermore, when the headphones 10 are inserted into the profiled recess 211, the direction of extension of the first electrode clamps can coincide with the direction of extension of the second electrode clamps, thereby increasing the success rate of the connection between the first and second electrode clamps. Optionally, the angle β above can be between 10 degrees and 45 degrees, for example between 30 degrees and 40 degrees, or between 15 degrees and 25 degrees, and preferably at 20 degrees.

[0142] In some embodiments, the normal direction of the inside IS of the core module 11 and the extension direction of the second electrode clamps are arranged inclined to each other, so that the connection of the first electrode clamps with the second electrode clamps can be facilitated in order to increase the success rate of the connection.

[0143] In particular, because the extension direction of the first electrode clamps is inclined relative to the thickness direction of the charging box 20 when the headphones 10 are inserted into the profiled recess 211, the contact area between the first and second electrode clamps can gradually increase as the headphones 10 are inserted, so that the change in the contact area between the first and second electrode clamps does not occur immediately. This contributes to increasing the success rate of connecting the first electrode clamps to the second electrode clamps, as well as the stability after this connection.

[0144] In some embodiments, the depth of the first profiled recess area 2111 gradually increases in a direction away from the first electrode clamps. When the earphone 10 is inserted into the profiled recess 211, the core module 11 can interact with the area of ​​varying depth in the first profiled recess area 2111, thus providing a guiding and positioning function for the core module 11 to facilitate its insertion into the first profiled recess area 2111.

[0145] In some embodiments, the first electrode clamps are exposed at an end of the second profiled recess 2112 facing the first profiled recess 2111. The area within the second profiled recess 2112 that receives the hard part has a depth that gradually increases in a direction away from the first profiled recess 2111. In the thickness direction of the charging box 20, the first profiled recess 2111 and the area within the second profiled recess 2112 that receives the hard part can thus form a conical structure with a specific angle that corresponds to the hard part and the core module 11 of the headphones 10. This provides a guiding function so that the headphones 10 easily engage with the profiled recess 211 when inserted into the charging box 20.When the headphones 10 are inserted into the profiled recess 211, the conical structure can also act as a limit for the headphones 10 to restrict the movement of the headphones 10 relative to the profiled recess 211 and to increase stability when inserting the headphones 10 into the charging case 20.

[0146] In some embodiments, the base of the second profiled recess area 2112 is provided with a first support platform 2113, wherein the first electrode clamps are provided on the first support platform 2113, and the headphones 10 are provided with a second support platform 176, wherein the second electrode clamps are provided on the second support platform 176. As in Fig. As shown in Figure 7, the second support platform 176 can be arranged, for example, on the hard part of the headphones 10. It is also possible for the second support platform 176 to be arranged in a different position on the core module 11 or on the hook structure 12. This is not explicitly restricted. When the headphones 10 are received in the profiled recess 211, the second support platform 176 and the first support platform 2113 are in contact with each other and thus interact. By providing the first support platform 2113 and the second support platform 176, the structural strength at the second electrode clamp of the headphones 10 and at the first electrode clamp of the profiled recess 211 can be improved, thereby increasing the stability of the connection between the first and second electrode clamps.At the same time, the first support platform 2113 and the second support platform 176 can absorb greater wear when connecting the first electrode clamps to the second electrode clamps, thereby reducing the wear of the first and second electrode clamps and other parts during repeated use of the headphones 10, which contributes to extending the service life of the headphones 10 and the charging case 20.

[0147] Optionally, the contact surface between the first support platform 2113 and the second support platform 176 is a flat surface. In some embodiments, the normal direction of the contact surface can be inclined relative to the thickness direction of the charging box 20. After the first support platform 2113 and the second support platform 176 have engaged, the first electrode clamps can be connected to the second electrode clamps relatively smoothly. In this way, the contact area between the first support platform 2113 and the second support platform 176 can also gradually increase as the headphones 10 are inserted, so that the change in the contact area between the first support platform 2113 and the second support platform 176 does not occur immediately.This contributes to improving the stability of the interaction between the first support platform 2113 and the second support platform 176, as well as the success rate of connecting the first electrode clamps to the second electrode clamps. Optionally, the contact surface between the first support platform 2113 and the second support platform 176 can be inclined towards the bottom wall of the second profiled recess area 2112. The first support platform 2113 and the second support platform 176 can form a stepped structure to facilitate their interaction.

[0148] In some other embodiments, the normal direction of the contact surface between the first support platform 2113 and the second support platform 176 is parallel to the extension direction of the first electrode clamps. In this way, the contact surface between the first and second electrode clamps can extend parallel to the contact surface between the first support platform 2113 and the second support platform 176. When the headphones 10 are gradually inserted into the profiled recess 211, the first electrode clamps connect relatively smoothly to the second electrode clamps, thereby reducing the damping sensation when the two support platforms interact.

[0149] In some other embodiments, the normal direction of the contact surface between the first support platform 2113 and the second support platform 176 is inclined to the extension direction of the first electrode clamps. This allows a stepped structure to be formed by the contact surface between the first and second electrode clamps relative to the contact surface between the first support platform 2113 and the second support platform 176. This stepped structure performs a positioning and limiting function when the first and second electrode clamps interact, thus increasing the stability of the connection between them.

[0150] In connection with the Fig. 20 and Fig. Figure 9 shows, for example, that the hook structure 12 can include an elastic part that connects the core module 11 to the battery housing 123. The elastic part can be a portion of the elastic metal wire 121 exposed at the adapter housing 122 and the battery housing 123. The two second profiled recess areas 2112 can be arranged such that the elastic parts of the two earphones 10 overlap. After one of the two earphones 10 has been inserted into the profiled recess 211, the other earphone can also be inserted into the profiled recess 211. The earphone 10 inserted first can undergo a certain degree of deformation to facilitate insertion of the later-inserted earphone 10 into the lower housing assembly 21.

[0151] Upon further examination of the charging box 20 directly from above, for example by placing the charging box 20 on a table and then viewing it from above, the elastic part of the hook structure 12 can be arranged in an arc shape, with the elastic parts of the two headphones 10 overlapping and forming two points of overlap (for example, like OP1 and OP2 in Fig. 20). The two profiled recesses 211 can be mirror-symmetrical with respect to the connecting line (i.e., a line segment OPIOP2) between the two overlapping points, which is considered the axis of symmetry. This results in a more sensible distribution of the two profiled recesses 211, which contributes to improving the optical quality of the loading box 20.

[0152] In some embodiments, the areas of the two second profiled recess regions 2112 located between the two overlap points can retain part of the lower housing arrangement 21; that is, the two second profiled recess regions 2112 form an isolated island region at their junction, thereby advantageously restricting the degree of freedom of each earphone 10 after insertion into the profiled recess 211. In other words, the above-mentioned isolated island region is formed in the areas of the two second profiled recess regions 2112 that are located between the two overlap points and are surrounded by the hook structures 12.

[0153] In one embodiment, the two earphones 10 are used for wearing on the user's left and right ears, respectively. The core modules 11 of the two earphones 10 are located on either side of the first reference direction. In the above arrangement, viewed in the first reference direction (i.e., in the direction in which the user opens the charging case 20 from the front), the earphone 10 for wearing on the left ear can be located on the left side relative to the user, and the earphone 10 for wearing on the right ear can be located on the right side relative to the user, to facilitate removal and storage of the earphones 10 in the charging case 20. Optionally, the two profiled recesses 211 are mirror-symmetrical with respect to the line connecting the two points of overlap, which is considered the axis of symmetry.The direction of the connecting line between the two overlapping points runs parallel to the first reference direction.

[0154] In some embodiments, the areas of the two second profiled recess areas 2112, which are located between the two overlapping points and are surrounded by the hook structures 12, are joined together to form a single unit, i.e., the above isolated island area is no longer present, so that the two second profiled recess areas 2112 merge seamlessly into one another at their junction, which helps to make it easier to insert the headphones 10 into the corresponding profiled recess 211.

[0155] In connection with the Fig. 20 and Fig. Figure 9 shows by way of example that the hook structure 12 can comprise a hard part between the elastic part and the core module 11, the hard part connecting the core module 11 to the elastic part. The hard part can be the adapter housing 122 or the electrode clamps 151 and the magnet 127 provided therein, and the like. Accordingly, the lower housing assembly 21 can comprise a limiting structure 212, the limiting structure 212 being arranged in or near the profiled recess 211. When any headphone 10 is inserted into the profiled recess 211, the limiting structure 212 can exert a pressing holding force on the hard part of the headphone 10, acting towards the bottom of the profiled recess 211 to maintain the relative position between the headphone 10 and the lower housing assembly 21.At least part of the elastic portion of each earphone 10 forms a cantilever structure opposite the point of application of the limiting structure 212 to the hard portion; that is, at least part of the elastic portion of any earphone 10 can be located without contact with the base of the profiled recess 211 (in particular, the second profiled recess area 2112). After one of the two earphones 10 has been inserted into the profiled recess 211, the elastic portion of the first inserted earphone 10 can be deformed to a certain degree more easily when the second earphone 10 is inserted into the profiled recess 211, so that the later inserted earphone 10 is more easily inserted into the lower housing assembly 21.

[0156] In some embodiments, the limiting structure 212 may be a projection that interferes with the hard part of the headphone 10 when any headphone 10 is inserted into or removed from the profiled recess 211. The projection mentioned above may be located near the profiled recess 211.

[0157] For example, two projections can be provided above, with the two projections being located on opposite sides of the profiled recess 211. When any headphone 10 is inserted into the profiled recess 211, the hard part of the headphone 10 is clamped between the two projections under the influence of the pressure exerted by the user.

[0158] Furthermore, the charging box 20 is provided to comprise a first magnetically attractive structure 231 and a second magnetically attractive structure 232, which are arranged in the lower housing assembly 21, with the electrode clamps 222 being located between the first magnetically attractive structure 231 and the second magnetically attractive structure 232. After any earphone 10 is inserted into the profiled recess 211, the first magnetically attractive structure 231 and the first magnetically attractive element in the earphone 10 can form a first magnetically attractive matching pair, while the second magnetically attractive structure 232 and the second magnetically attractive element in the earphone 10 can form a second magnetically attractive matching pair.The electrode terminals 222 and 151 come into unambiguous contact with each other through the first magnetically attracting matching pair and the second magnetically attracting matching pair mentioned above. Thus, after pairing, electrode terminals 222 and 151 are positioned between the first and second magnetically attracting matching pairs, thereby establishing improved contact between the headphones 10 and the charging case 20. It should be noted that the contact between the headphones 10 and the charging case 20 is further ensured by the influence of the limiting structure 212.

[0159] In some embodiments, the limiting structure 212 can be a limiting groove that communicates with the profiled recess 211. After any headphones 10 are inserted into the profiled recess 211, the hook structure 12 is further displaced into the limiting groove, i.e., the headphones 10 undergo a total displacement. The limiting groove mentioned above can be located within the profiled recess 211.

[0160] For example, the charging box 20 can include a first magnetically attracting structure 231 in the lower housing arrangement 21. After any headphones 10 are inserted into the profiled recess 211, the first magnetically attracting structure 231 and the first magnetically attracting element in the headphones 10 can form a first magnetically attracting matching pair. For example, two magnets can attract each other to guide the hook structure of the headphones 10 further into the upper limiting groove. The base of the profiled recess 211 can be provided with a guide surface by which the hook structure of the headphones 10 is guided into the upper limiting groove. For example, a section of the second profiled recess area 2112 located near the first profiled recess area 2111 is deeper than the first profiled recess area 2111.There is a height difference between the two, and the profiled recess 211 is designed in this area with a height difference as an inclined transition surface to form the guide surface above. Accordingly, the upper limiting groove can be located in the section of the second profiled recess area 2112 that lies close to the first profiled recess area 2111.

[0161] Furthermore, the charging box 20 is provided to include a second magnetically attracting structure 232 in the lower housing arrangement 21, with the electrode clamps 222 being located between the first magnetically attracting structure 231 and the second magnetically attracting structure 232. After any earphone 10 is inserted into the profiled recess 211, the second magnetically attracting structure 232 and the second magnetically attracting element in the earphone 10 can form a second magnetically attracting matching pair. For example, two magnets can attract each other to, together with the first magnetically attracting matching pair described above, guide the hook structure of the earphone 10 further into the upper limiting groove. This results in any earphone 10 being moved further into the upper limiting groove with greater driving force after insertion into the profiled recess 211.Through the aforementioned first magnetically attracting matching pair and the aforementioned second magnetically attracting matching pair, the electrode terminals 222 and 151 come into unambiguous contact with each other in a similar manner. Thus, after pairing, the electrode terminals 222 and 151 are positioned between the first and second magnetically attracting matching pairs, thereby establishing improved contact between the headphones 10 and the charging case 20. It should be noted that the contact between the headphones 10 and the charging case 20 is further ensured by the influence of the limiting structure 212.

[0162] It should be noted that the first magnetically attractive element mentioned above could be a loudspeaker 112 in the core module 11, specifically a magnetic circuit system of the loudspeaker 112. The second magnetically attractive element could be a magnet 127 on the hard part of the headphone 10.

[0163] Typically, deformation of the hook structure 12 when inserting the headphones 10 into the charging case 20 could reduce the success rate of inserting the headphones 10 into the case or impair the stability of the headphones' placement. For example, it is intended that the core module 11 of the headphones 10 can be accommodated in the first profiled recess area 2111 and the hook structure 12 in the second profiled recess area 2112. However, since the hook structure 12 has elasticity, when inserting it into the second profiled recess area 2112, a pre-existing deformation caused by use or a movement deformation of the hook structure 12 due to inertial forces may prevent it from fitting well into the shape of the second profiled recess area 2112.This makes it difficult to insert the hook structure 12 into the profiled recess area 211. This can also lead to an unstable placement of the core module 11 with respect to the first profiled recess area 2111. To mitigate the aforementioned technical problems, the following embodiments can be provided.

[0164] Combined with Fig. In some embodiments, 20 provides that a certain clearance is formed between the core module 11 and the side wall of the first profiled recess area 2111, as well as a certain clearance between the hook structure 12 and the side wall of the second profiled recess area 2112, such that when the headphones 10 are inserted into the profiled recess 211, sufficient space is created by the profiled recess 211 to allow for the presence or a certain deformation of the hook structure 12. This ensures that the core module 11 and the hook structure 12 can be inserted smoothly into the first profiled recess area 2111 and the second profiled recess area 2112, respectively, without requiring much user intervention, thereby improving the success rate of inserting the headphones into the box and the stability of their placement.Since one end of the hook structure 12 is connected to the core module 11 and the other end is designed as a cantilever, the part of the hook structure 12 facing away from the core module 11 can be considered the distal end of the cantilever support. Furthermore, it is taken into account that when the headphones 10 are inserted into the profiled recess 211, the part of the hook structure 12 facing away from the core module 11 undergoes greater deformation than other parts, and the core module 11 requires only a small amount of clearance compared to the hook structure 12, allowing the core module 11 to be inserted into the first profiled recess area 2111. Therefore, excessive clearance can be detrimental to the optimization of the dimensions of the charging box 20 and may result in the core module 11 being unstable in the charging box, wobbling slightly, and causing abnormal noises.

[0165] In some embodiments, it is provided that when the headphones 10 are inserted into the profiled recess 211, the free space between the part of the hook structure 12 facing away from the core module 11 and a side wall of the second profiled recess area 2112 (a side wall 2111c, see Fig. 20) in one direction of extension of the hook structure 12 such that it is larger than the clearance between the core module 11 and a side wall of the first profiled recess area 2111. This allows the core module 11 to be inserted smoothly through the first profiled recess area 2111 and simultaneously creates a larger movement space for the hook structure 12 through the second profiled recess area 2112. This further increases the success rate when inserting the headphones 10 into the box, as well as the placement stability, and thus facilitates the optimization of the dimensions of the charging box 20. When the hook structure 12 is received in the second profiled recess area 2112, it can still be deformed by wobbling or stress, which changes the size of the clearance between the hook structure 12 and the side wall of the second profiled recess area 2112.This change, however, does not eliminate the clearance. Optionally, the size of the clearance between the part of the hook structure 12 facing away from the core module 11 and the side wall of the second profiled recess area 2112 is in a range of 0.5 to 1.5 mm. For example, the clearance size can be 1 to 1.3 mm, particularly 1.2 mm. By adjusting the clearance size in this way, the success rate when inserting the hook structure 12 into the second profiled recess area 2112 can be increased, and the dimensions of the loading box 20 are only minimally affected.

[0166] Optionally, the size of the clearance between the core module 11 and the side wall of the first profiled recess area 2111 is in the range of 0.05 to 0.2 mm. For example, the clearance size can be 0.07 to 0.15 mm, and in particular 0.1 mm. This adjustment of the clearance size allows the core module 11 to be stably accommodated in the first profiled recess area 2111 and fulfills a positioning and limiting function for the reception of the headphone 10 in the profiled recess 211. This also contributes to improving the stability of the contact between the electrode clamps.

[0167] In some embodiments, a portion of the hook structure 12 facing away from the core module 11 includes a battery housing 123 for receiving a battery. The battery housing 123 is arranged on the portion of the hook structure 12 facing away from the core module 11. The hook structure 12 may further include an elastic portion that connects the core module 11 to the battery housing 123. The battery housing 123 is dimensioned larger than the elastic portion so that the elastic portion can enclose the user's ear for hanging the headphones 10, and the battery housing 123 can support the ear from behind, thus improving the stability of the headphones 10 when worn. The clearance between the battery housing 123 and the side wall of the second profiled recess area 2112 is larger than the clearance between the core module 11 and the side wall of the first profiled recess area 2111.This increases the success rate when inserting the battery housing 123 into the second profiled recess area 2112, thus facilitating the storage of the headphones 10. Furthermore, the clearance between the elastic part and the side wall of the second profiled recess area 2112 is larger than the clearance between the core module 11 and the side wall of the first profiled recess area 2111 when the headphones 10 are inserted into the profiled recess 211. This increases the success rate when inserting the elastic part into the second profiled recess area 2112, which can facilitate the insertion of the headphones 10.

[0168] In some embodiments, the hook structure 12 can further comprise a rigid part that connects the elastic part to the core module 11. Since the rigid part can serve to accommodate the electrode clamps 151 or the second magnetically attracting element, it must have higher stiffness and require greater stability compared to the elastic part. When the earphone 10 is received in the profiled recess 211, a clearance between the elastic part and the side wall of the second profiled recess area 2112 can be configured to be larger than the clearance between the rigid part and the side wall of the second profiled recess area 2112.This makes it easier to insert the elastic part into the second profiled recess area 2112 and allows the hard part to be received relatively stably in the second profiled recess area 2112, so that the hard part can interact with the core module 11, thereby increasing the stability of the reception of the headphone 10 in the profiled recess 211, which contributes to improving the stability and reliability of the contact of the electrode clamps or the second magnetically attracting element.

[0169] In some embodiments, the charging box comprises 20 electrode clamps used at least for charging, and these clamps may not be located on the battery housing 123. It is understood that the battery housing 123 is located at the end of the hook structure 12 and therefore exhibits a greater degree of deformation. Arranging the electrode clamps on the battery housing 123 is disadvantageous for their alignment with the electrode clamps in the lower housing arrangement 21. In particular, the electrode clamps could be arranged not on the battery housing 123, but on a structure of the headphones 10 that exhibits only minimal deformation, for example, on the core module 11 or on the rigid part, thus facilitating alignment between the electrode clamps.

[0170] Combined with Fig. In some embodiments, the lower housing assembly 21 is provided with a limiting structure. When the headphones 10 are inserted into the profiled recess 211, the core module 11 can be received in the first profiled recess area 2111 by means of the limiting structure. The limiting structure can, for example, be a snap-fit ​​structure, so that the core module 11 can be inserted into the first profiled recess area 2111 by means of a snap-fit ​​connection with the limiting structure. Alternatively, the limiting structure can, for example, be a magnetically attracting structure, so that the core module 11 can be inserted into the first profiled recess area 2111 by means of a magnetically attracting connection with the limiting structure.In particular, the first profiled recess area 2111 can be provided with the first magnetically attractive structure 231, and the core module 11 is provided with a first magnetically attractive element. When the core module is inserted into the first profiled recess area 2111, the first magnetically attractive element interacts magnetically with the first magnetically attractive structure 231. The arrangement in which the core module 11 is positioned in the first profiled recess area 2111 by magnetic attraction can be understood in particular from the description of the embodiments above and will not be explained again here. In this way, the core module 11 can be stably received in the first profiled recess area 2111, thereby limiting movement of the headphones 10 in the charging case 20 and increasing the stability of the fit between the electrode clamps.

[0171] Combined with Fig. 25 and Fig. Figure 26 shows by way of example that the loading box 20 further comprises an upper housing assembly 24, wherein, in a closed state of the loading box 20, the upper housing assembly 24 fits the lower housing assembly 21. The upper housing assembly 24 is provided with a restraint element 245, wherein, in the closed state of the loading box 20, the restraint element 245 rests against the hook structure 12. This allows the restraint element 245 to exert a compressive force on the hook structure 12 when the loading box 20 is closed, thus limiting movement of the hook structure 12 in the thickness direction of the loading box 20.Furthermore, it is provided that a frictional force is generated between the restricting element 245 and the hook structure 12, so that movement of the hook structure 12 in another direction is limited in order to reduce abnormal noises caused by such movement of the hook structure 12 and at the same time reduce the wear and tear of the headphones 10 and the charging box 20.

[0172] Either one or two or more restriction elements 245 can be provided. In some embodiments, only one restriction element 245 is provided, wherein the restriction element 245 simultaneously rests against the hook structures 12 of the two headphones 10 when the charging box 20 is closed. This allows the movement of both hook structures 12 to be limited simultaneously by just one restriction element 245. In some embodiments, it is possible for two restriction elements 245 to be provided, wherein each of the two restriction elements 245 can limit the movement of the hook structures 12 of the two headphones 10 when the charging box 20 is closed.

[0173] In some embodiments, the hook structure 12 includes a battery housing 123 for receiving the battery, with the restraint element 245 bearing against the battery housing 123 when the charging box 20 is closed. The battery housing 123 is a larger part of the hook structure 12, and the restraint element 245, by limiting the movement of the battery housing 123, increases the stability of the hook structure 12 when it is inserted into the charging box 20. Furthermore, the core module 11 can be received in the first profiled recess area 2111 by means of a latching mechanism or magnetic attraction, etc., in order to restrict the degrees of freedom of the core module 11. When the headphones 10 are inserted into the profiled recess 211, this restricts the degrees of freedom of both the core module 11 and the hook structure 12 of the headphones 10.This significantly restricts the earbuds' freedom of movement, preventing them from wobbling in the charging case 20. Furthermore, it reduces wear and tear between the charging case 20 and the earbuds, thus extending their lifespan.

[0174] In some other embodiments, the clearance between the battery housing 123 and the side wall of the second profiled recess area 2112 is larger than the clearance between the core module 11 and the side wall of the first profiled recess area 2111. The advantageous effects of this configuration can be seen from the description of the aforementioned embodiments and are not explained again here. Although the success rate when inserting the headphones 10 into the charging case 20 can be increased due to the larger clearance between the battery housing 123 and the side wall of the second profiled recess area 2112, this can easily lead to a wobble of the hook structure 12.On this basis, it is further provided that the restricting element 245 is arranged so that it rests against the battery housing 123 when the charging box 20 is closed, thereby increasing the success rate when inserting the headphones 10 and simultaneously reducing the wobbling of the hook structure 12.

[0175] Optionally, the first magnetically attractive element of the core module 11 interacts with the first magnetically attractive structure of the lower housing assembly 21 when the earphone 10 is inserted into the profiled recess 211 of the charging case 20. This restricts the degrees of freedom of the core module 11, thereby reducing its wobble. Furthermore, because the restricting element 245 rests against the hook structure 12, the wobble of the hook structure 12, and thus of the entire earphone 10, is reduced.

[0176] Optionally, the lower housing assembly 21 can include a limiting structure 212, which can be located in or near the profiled recess 211. When any earphone 10 is inserted into the profiled recess 211, the limiting structure 212 can exert a compressive force on the hard part or core module 11 of the earphone 10, acting towards the base of the profiled recess 211, to maintain the relative position between the earphone 10 and the lower housing assembly 21, limit the earphone 10's degrees of freedom, and thus reduce the earphone 10's movement in the charging case 20. Furthermore, the limiting element 245 bearing against the hook structure 12 reduces the movement of the hook structure 12 and, consequently, of the earphone 10.

[0177] In some embodiments, the restraint element 245 can be designed as a flexible structure. The restraint element 245 can be made of silicone, rubber, or other materials, for example. The Shore hardness of the restraint element 245 can range from 20 to 50. This allows the restraint element 245 to deform when it comes into contact with the hook structure 12. On the one hand, this reduces the wear on the hook structure 12 caused by the restraint element 245, and on the other hand, it allows the force exerted by the restraint element 245 on the hook structure 12 to be distributed more evenly, so that the restraint element 245 can adapt better to the shape of the hook structure 12. This further restricts the movement of the hook structure 12 in several directions, reduces the wobbling of the earphone 10 in the profiled recess 211, and reduces abnormal noises caused by the movement, etc.

[0178] In some other embodiments, the restraint element 245 may comprise a contact part and an extendable part, the extendable part connecting the contact part to the upper housing assembly 24. When the loading box 20 is closed, the contact part rests against the hook structure 12 due to the elastic extension of the extendable part. In other words, the extendable part can provide an elastic force when the contact part rests against the hook structure 12, thereby exerting a compressive force on the hook structure 12 to limit its wobble. The extendable part may, in particular, be a spring, a torsion spring, or another structure.

[0179] Optionally, the thickness of the restraint element 245 can be in the range of 1.2 to 2 mm. For example, the thickness can be 1.2 mm, 1.5 mm, or 2 mm. If the thickness of the restraint element 245 is less than 1.2 mm, it may not interfere sufficiently with the hook structure 12, thus not generating enough compressive force to limit the movement of the hook structure 12. If the thickness of the restraint element 245 is greater than 2 mm, it may exert excessive compressive force on the hook structure 12, causing it to continuously deform during use. This would result in the hook structure 12 losing its original shape and negatively impacting the user's wearing experience.

[0180] In some embodiments, the first part 2112a of the second profiled recess area 2112 serves to receive a part (for example, the battery housing 123) in the hook structure 12. When the charging box 20 is closed, the projections of the first parts 2112a of the two second profiled recess areas 2112 in the thickness direction of the charging box 20 at least partially cover the projection of the restraint element 245 in the thickness direction of the charging box 20. In this way, it is possible for the restraint element 245 to at least partially abut the hook structure and for the restraint area of ​​the restraint element 245 not to extend beyond a region of the first part 2112a of the second profiled recess area 2112, thus reducing the potential redundancy of the restraint element 245 and lowering costs.

[0181] Furthermore, in connection with Fig. 26 In some embodiments, it is provided that the restraint element 245 can be designed as a single arc-shaped structure that simultaneously rests against the two hook structures 12. The length (see L in Fig. 26) The projection of the restraint element 245 in the first reference direction, which is perpendicular to the axis of a rotary shaft mechanism 25, lies in the range of 20 mm to 24 mm. It can, for example, lie in the range of 21 mm to 23 mm or from 22 mm to 22.5 mm. If the length of the projection of the restraint element 245 in the first reference direction is less than 20 mm, the contact area between the restraint element 245 and each of the hook structures 12 is reduced. In this case, it may even happen that the restraint element 245 no longer rests against both hook structures 12 simultaneously. As a result, the restraint element 245 loses the ability to restrain both hook structures 12 at the same time.If the length of the projection of the restraint element 245 in the first reference direction is greater than 24 mm, this results in the restraint element 245 being redundant in length, apart from the part that abuts the hook structure 12, which increases production costs.

[0182] In some embodiments, the length (see H in Fig. 26) the projection of the restraint element 245 in the second reference direction, which is perpendicular to the first reference direction, in the range of 3 mm to 7 mm. It can, for example, be in the range of 3 to 6 mm or from 5 to 6 mm. If the length of the projection of the restraint element 245 in the second reference direction is less than 3 mm, the area on which the restraint element 245 rests against the hook structure 12 is reduced. In this case, the ability of the restraint element 245 to limit the movement of the hook structure 12 is impaired. If the length of the projection of the restraint element 245 in the second reference direction is greater than 7 mm, the contact area between the restraint element 245 and the hook structure 12 is larger. In this case, there is an excessive increase in the compressive force exerted by the restraint element 245 on the hook structure 12, causing the hook structure 12 to undergo an undesirable deformation.

[0183] In some embodiments, the upper housing assembly 24 is provided with a receiving recess 244, which serves to receive the headphones 10 when the charging case 20 is closed. When the upper housing assembly 24 is closed with the lower housing assembly 21, the receiving recess 244 can accommodate a portion of the headphones 10 that is not received by the profiled recess 211, thereby firmly closing the upper housing assembly 24 with the lower housing assembly 21. When the charging case 20 is closed, the side wall of the receiving recess 244 can also serve as an additional restraint for the headphones 10, limiting their movement within the charging case 20. Furthermore, the aforementioned restraint element 245 is arranged within the receiving recess 244.Through the interaction of the restricting element 245 with the receiving recess 244, the restricting element 245 can exert a compressive force on the hook structure 12 when the headphones 10 are simultaneously held in the profiled recess 211 and the receiving recess 244. This achieves a limitation of movement for the hook structure 12 and reduces wobbling of the hook structure 12 as well as the generation of abnormal noises.

[0184] Furthermore, in connection with Fig. Figure 20 provides that the second profiled recess areas 2112 of the two profiled recesses 211 are arranged such that they intersect. When the two profiled recesses 211 each accommodate one of the headphones 10, the hook structures 12 of the two headphones 10 overlap. In this case, a first overlap point OP1 is formed near the rotating shaft mechanism 25, and a second overlap point OP2 is formed away from the rotating shaft mechanism 25. In this way, the hook structures 12 of the two headphones 10 can be arranged in an overlapping manner, which contributes to reducing the volume of the charging box 20.Along one side of the connecting line between the first overlap point OP1 and the second overlap point OP2, there is a region where the restraint element 245 abuts the hook structure 12, in a direction in which the second overlap point OP2 faces away from the first overlap point OP1. When the hook structures 12 are received in the profiled recess 211, they overlap. The degree of freedom of movement of a portion of the hook structures 12 can be limited by the overlapping portion. By arranging the region where the restraint element 245 abuts the hook structure 12 on a side of the second overlap point OP2 facing away from the first overlap point OP1, the degree of freedom of the hook structure 12 can be further effectively reduced, thereby further limiting its movement.Optionally, the constraint element 245 rests against the part of the hook structure 12 corresponding to the second overlap point OP2 of the closed loading box 20. This causes the hook structures 12 to overlap at the second overlap point OP2, resulting in an overlap of their thicknesses. Because the constraint element 245 rests against the part corresponding to the second overlap point OP2, a reduced thickness can be achieved, provided that the degrees of freedom of the hook structures 12 are restricted, thereby reducing production costs.

[0185] When the loading box 20 is closed, the distance between the restraint element 245 and a side wall of the upper housing assembly 24 located near the second overlap point OP2 is optionally in the range of 15 to 20 mm. This allows the restraint element 245 to abut the portion of the hook structure 12 located near the second overlap point OP2. The two hook structures 12 have an overlapping portion in a region near the second overlap point OP2, so this region has a greater height in the thickness direction of the loading box 20, which reduces the thickness of the restraint element 245. If the distance between the restraint element 245 and an edge of the lower housing assembly 21 located near the second overlap point OP2 is less than 15 mm, the restraint element 245 is located further away from the second overlap point OP2.In this case, the thickness of the restraint element 245 must be increased so that it can bear against the hook structure 12. If the distance between the restraint element 245 and an edge of the lower housing arrangement 21 located near the second overlap point OP2 is greater than 20 mm, the area on which the restraint element 245 bears against the hook structure 12 is reduced, thereby impairing the restraint effect.

[0186] Combined with Fig. 21 and Fig. By way of example, the loading box 20 may include an upper housing assembly 24 and a pivot shaft mechanism 25 that connects the upper housing assembly 24 to the lower housing assembly 21, so that the loading box 20 can be opened and closed. The pivot shaft mechanism 25 may include a lower mounting base 251, which is integrally formed with the lower housing assembly 21, upper mounting bases 252, which are integrally formed with the upper housing assembly 24, and a pivot shaft 253. The lower mounting base 251 may project into the upper housing assembly 24. It is then pivotably connected to the upper mounting bases 252 via the pivot shaft 253.Furthermore, it is provided that the rotary shaft mechanism 25 can include a stiffening element 254 connected to the lower mounting base 251, wherein the structural strength of the stiffening element 254 is greater than the structural strength of the lower mounting base 251. The rotary shaft 253 is also passed through the stiffening element 254 to structurally stiffen the rotary shaft mechanism 25. The stiffening element 254 and the lower mounting base 251 can be formed as a single, integrally molded component. For example, they are formed in one piece by a metal inlay injection molding process. Alternatively, they can be formed as two separate components connected to each other by one of the following connection types or a combination thereof: adhesive bonding, screw connection, snap-fit ​​connection, and the like.

[0187] Furthermore, the rotary shaft mechanism 25 is provided to include an elastic element 255, wherein one end of the elastic element 255 is connected to the lower housing assembly 21, for example, to the lower mounting base 251, and the other end of the elastic element 255 is connected to the upper housing assembly 24 to maintain the open or closed state of the loading box 20. When the loading box 20 is opened or closed, the elastic element 255 is elastically deformed accordingly, thereby generating a certain damping sensation. This damping sensation can, of course, also result in part from the frictional resistance that arises when the rotary shaft 253 and the associated structure rotate.

[0188] Combined with Fig. Figure 21 shows by way of example that the elastic element 255 can be designed as a Z-shaped torsion spring, the basic structure of which is known to those skilled in the art and is not explained in detail here. One of the lower mounting bases 251 and the upper housing assembly 24 can be provided with a mounting hole 2411, while the other can be provided with a mounting groove 2511. For example, it is provided that the mounting hole 2411 is located on the upper housing body 241 and is situated between the two upper mounting bases 252 in the direction of extension of the rotating shaft 253, and that the mounting groove 2511 is located on the lower mounting base 251 and is situated between the two sleeve parts 2542 in the direction of extension of the rotating shaft 253. This means that, during the assembly of the elastic element 255, one end of the elastic element 255 is first guided into the mounting hole 2411 in the axial direction of the mounting hole 2411.The other end of the elastic element 255 is then embedded in the mounting groove 2511 in a direction perpendicular to the axial direction of the mounting groove 2511. This reduces the deformability of the elastic element 255 during the assembly process, thus contributing to maintaining the reliability of the elastic element 255. Furthermore, the mounting hole 2411 and the mounting groove 2511 can each be designed as a through-hole in their axial direction.

[0189] Combined with Fig. Figure 21 shows by way of example that two upper mounting bases 252 can be provided at a distance from each other in the direction of extension of the rotating shaft 253. The lower mounting base 251 can be located between the two upper mounting bases 252 and is provided at a distance from the two upper mounting bases 252 in the direction of extension of the rotating shaft 253, which facilitates the support of the rotating shaft 253. The stiffening element 254 can comprise a connecting part 2541, which is connected to the lower mounting base 251, as well as two sleeve parts 2542, which are provided at a distance from each other in the direction of extension of the rotating shaft 253. The two sleeve parts 2542 can each be located in a space between the lower mounting base 251 and the two upper mounting bases 252.Accordingly, the rotating shaft 253 passes through the lower mounting base 251, the two sleeve parts 2542 and the two upper mounting bases 252.

[0190] Combined with Fig. Figure 22 shows by way of example that the lower housing assembly 21 comprises a lower housing body 213 and a lower housing lining 214, which is provided on the inside of the lower housing body 213. The lower mounting base 251 and the lower housing body 213 can be formed as a single-piece plastic part. The stiffening element 254 can be made of metal. The connecting part 2541 can be located between the lower housing body 213 and the lower housing lining 214, so that the stiffening element 254 is not exposed, at least when the charging box 20 is closed. Accordingly, the profiled recess 211 and the limiting structure 212, etc., can be provided on the lower housing lining 214, as can the main control circuit board 221 and the electrode terminals 222 provided thereon, the first magnetically attracting structure 231, and the second magnetically attracting structure 232, etc.The upper housing assembly 24 can be provided between the lower housing body 213 and the lower housing lining 214. Furthermore, it is provided that the upper housing assembly 24 can comprise an upper housing body 241 and an upper housing lining 242, which is provided on the inside of the upper housing body 241. The upper mounting bases 252 and the upper housing body 241 can be formed as a single-piece plastic part.

[0191] In contrast to the prior art, in which the upper housing assembly 24 is connected to the lower housing assembly 21 via a metal connecting element (i.e., in which the upper housing assembly 24 and the lower housing assembly 21 can no longer be connected to each other after the metal connecting element has been removed) and the metal connecting element must be exposed, the above method allows the upper housing assembly 24 and the lower housing assembly 21 to remain connected to each other after the stiffening element 254 has been removed, and the stiffening element 254 cannot be exposed, which contributes to reducing the cost of the charging box 20 and to standardizing its appearance.

[0192] Combined with Fig. Figures 28 to 31 illustrate that the loading box 20 can comprise an upper housing assembly 24 and a rotary shaft mechanism 25 that connects the upper housing assembly 24 to the lower housing assembly 21, enabling the loading box 20 to be opened and closed. The loading box 20 further comprises a limiting mechanism that, when the loading box 20 is open, is used to limit the angle by which the upper housing assembly 24 rotates relative to the lower housing assembly 21. In other words, when the upper housing assembly 24 rotates by a predetermined angle relative to the lower housing assembly 21, the limiting mechanism can restrict any further relative rotation of the two assemblies.It should be noted that an opening angle of the upper housing assembly 24 relative to the lower housing assembly 21 can represent an angle between a lower surface of the lower housing assembly 21 and an upper surface of the upper housing assembly 24 (see angle α in . Fig. 27). By providing the limiting mechanism, the opening angle of the upper housing assembly 24 relative to the lower housing assembly 21 can be limited, thereby reducing the risk of damage to the housing structure of the charging box 20 due to excessive rotation of the upper housing assembly 24 and reducing problems such as wear of the surface of the charging box 20 due to contact with the housing.

[0193] In some embodiments, the limiting mechanism is connected to both the upper housing assembly 24 and the lower housing assembly 21, thereby limiting the opening angle of the upper housing assembly 24 relative to the lower housing assembly 21. For example, the limiting mechanism may comprise two connecting rods, the two connecting rods being pivotally connected to each other and pivotally connected to the upper housing assembly 24 and the lower housing assembly 21, respectively. When the upper housing assembly 24 rotates through the predetermined angle relative to the lower housing assembly 21, the two connecting rods are aligned, thus limiting further rotation of the upper housing assembly 24 relative to the lower housing assembly 21.When the charging box 20 transitions from the open to the closed state, the two connecting rods rotate relative to each other, with the parts connected to the upper housing assembly 24 and the parts connected to the lower housing assembly 21 moving closer together. In other words, the two connecting rods could limit the rotation of the upper housing assembly 24 into the open state relative to the lower housing assembly 21, but not limit the rotation of either assembly into the closed state.

[0194] In some embodiments, the limiting mechanism comprises a first limiting element 271 and a second limiting element 272, wherein the second limiting element 272 is connected to the upper housing assembly 24 and can move with the upper housing assembly 24. The first limiting element 271 is connected to the lower housing assembly 21 and can move with the lower housing assembly 21. When the upper housing assembly 24 rotates by the predetermined angle relative to the lower housing assembly 21, the first limiting element 271 and the second limiting element 272 are in contact, thus limiting further rotation of the upper housing assembly 24 relative to the lower housing assembly 21. Optionally, the predetermined angle can be in the range of 90 to 110 degrees. If the predetermined angle is less than 90 degrees, i.e.,If an acute angle exists between the upper housing assembly 24 and the lower housing assembly 21, the upper housing assembly 24 tends to close again under the influence of gravity or the elastic element of the rotary shaft mechanism 25, which is inconvenient for the user when removing and storing the headphones 10. Furthermore, a predetermined angle of less than 90 degrees causes the user to interfere with the upper housing assembly 24 when removing and storing the headphones 10, impairing the user experience. If the predetermined angle is greater than 110 degrees, the opening angle of the upper housing assembly 24 relative to the lower housing assembly 21 becomes too large, increasing the strength requirements of the rotary shaft mechanism 25 and the limiting mechanism.An excessively large opening angle of the upper housing assembly 24 relative to the lower housing assembly 21 also results in a greater length of the loading box 20 when open. The length of the loading box 20 when open refers to the distance between the end of the upper housing assembly 24 furthest from the rotating shaft mechanism and the end of the lower housing assembly 21 furthest from the rotating shaft mechanism. Under extreme operating conditions, such as when the loading box 20 is dropped or crushed, the greater length of the loading box 20 when open can lead to a greater torque on the upper housing assembly 24 and the lower housing assembly 21, thereby increasing the risk of damage to the loading box 20.

[0195] In some embodiments, an edge of the upper housing assembly 24 located near the lower housing assembly 21 is provided with a slot 247. The rotating shaft mechanism 25 comprises a rotating shaft 253 that bridges the two ends of the slot 247. The upper housing assembly 24 thus rotates relative to the lower housing assembly 21 about the rotating shaft 253. In some embodiments, the aforementioned angle is smaller than the opening angle of the upper housing assembly 24 relative to the lower housing assembly 21 when the edge of the slot 247 abuts the outer wall of the lower housing assembly 21. It is understood that the rotation of the upper housing assembly 24 relative to the lower housing assembly 21 can be facilitated by the slot 247.When the edge of the slot 247 abuts the outer wall of the lower housing assembly 21, the rotation of the upper housing assembly 24 relative to the lower housing assembly 21 is limited. Due to material and structure limitations of the upper housing assembly 24 and the lower housing assembly 21, the design and limitation of the edge place high demands on the structural strength of the housing of the loading box 20, resulting in higher process and material costs. By adding the limiting mechanism, the opening angle of the upper housing assembly 24 relative to the lower housing assembly 21 can be limited, thereby increasing the limiting strength while simultaneously reducing the structural strength requirement of the loading box, thus lowering costs.

[0196] When the edge of the slot 247 rests against the outer wall of the lower housing assembly 21, a compressive force can still be exerted on the outer wall of the lower housing assembly 21, leading to a dent in the outer wall of the lower housing assembly 21 and thus impairing its aesthetic appearance. Furthermore, a stress concentration occurs in the contact area of ​​the outer wall of the lower housing assembly 21, where the dent originates, under load, significantly impairing the strength of the lower housing assembly 21. To avoid this stress concentration in the contact area, the specified angle can be adjusted so that it is smaller than the opening angle of the upper housing assembly 24 relative to the lower housing assembly 21 when the edge of the slot 247 rests against the outer wall of the lower housing assembly 21.When the upper housing assembly 24 is opened by the specified angle relative to the lower housing assembly 21, the limiting mechanism restricts further rotation, thus preventing the edge of the slot 247 from contacting the outer wall of the lower housing assembly 21. For example, when the edge of the slot 247 contacts the outer wall of the lower housing assembly 21, the upper housing assembly 24 and the lower housing assembly 21 can be open by 120 degrees, and the specified angle is 110 degrees. When the upper housing assembly 24 is opened by 110 degrees relative to the lower housing assembly 21, the limiting mechanism restricts further rotation of the upper housing assembly 24, thus preventing the edge of the slot 247 from contacting the outer wall of the lower housing assembly 21.

[0197] In some embodiments, the rotary shaft mechanism 25 comprises a first mounting base 256, which is mounted on the lower housing assembly 21, and a second mounting base 257, which is mounted on the upper housing assembly 24. The rotary shaft 253 passes through both the first mounting base 256 and the second mounting base 257. The provision of the first mounting base 256 and the second mounting base 257 increases the strength of the rotary shaft mechanism 25. The limiting mechanism comprises the first limiting element 271, which is connected to the first mounting base 256, and the second limiting element 272, which is connected to the second mounting base 257.When the upper housing assembly 24 rotates by the specified angle relative to the lower housing assembly 21, the first limiting element 271 and the second limiting element 272 are in contact, thus limiting any further rotation of the upper housing assembly 24 relative to the lower housing assembly 21.

[0198] Optional in conjunction with Fig. 28 and Fig. 29 provides that the extension direction of the first limiting element 271 is perpendicular to the extension direction of the second limiting element 272. In this way, the success rate of the first limiting element 271 being placed against the second limiting element 272 can be increased. In some embodiments, the extension direction of one of the first limiting element 271 and the second limiting element 272 is provided along the axial direction of the rotating shaft 253, and the extension direction of the other is provided along the radial direction of the rotating shaft 253. This allows the relative rotation of the first limiting element 271 and the second limiting element 272 to be adjusted to the rotation of the upper housing assembly 24 and the lower housing assembly 21, respectively, relative to the rotating shaft 253, so that the first limiting element 271 and the second limiting element 272 each correspond to the rotation of the upper housing assembly 24 and the lower housing assembly 21, respectively.the lower housing arrangement 21 relative to the rotating shaft 253 can be limited.

[0199] In some embodiments, the first limiting element 271 and the first mounting base 256 are formed as a single metal part. Alternatively, the second limiting element 272 and the second mounting base 257 are formed as a single metal part. Alternatively, it is provided that the first limiting element 271 and the first mounting base 256 are formed as a single metal part, and the second limiting element 272 and the second mounting base 257 are formed as a single metal part. By forming the first mounting base 256 and the second mounting base 257 as metal parts, respectively, they can each have a small volume while maintaining sufficient strength, thereby reducing the space required in the loading box 20 and enabling a reduction in the volume of the loading box 20.Because the first limiting element 271 is formed integrally with the first mounting base 256, or the second limiting element 272 is formed integrally with the second mounting base 257, the torque of a force exerted on the first limiting element 271 and the second limiting element 272 during assembly is transmitted to the loading box 20 via the first mounting base 256 or the second mounting base 257, respectively. This results in a high connection strength between the first mounting base 256 and the second mounting base 257 and the loading box 20. Therefore, the stability during assembly of the first limiting element 271 against the second limiting element 272 can be increased by forming the first limiting element 271 integrally with the first mounting base 256 or the second limiting element 272 integrally with the second mounting base 257.

[0200] Combined with Fig. Figures 30 to 32 provide, by way of example, that one of the first limiting element 271 and the second limiting element 272 is provided with a limiting groove 2721, while the other of the first limiting element 271 and the second limiting element 272 interacts with the limiting groove 2721 when the loading box 20 is opened to limit the rotation of the upper housing assembly 24 relative to the lower housing assembly 21. In some embodiments, the second limiting element 272 can be provided with the limiting groove 2721. In this case, the first limiting element 271 projects into the limiting groove 2721 after the upper housing assembly 24 has been opened relative to the lower housing assembly 21 by a first angle, the first angle being smaller than the specified angle.When the upper housing assembly 24 rotates by the predetermined angle relative to the lower housing assembly 21, the first limiting element 271 rests against the groove wall of the limiting groove 2721. The contact between the first limiting element 271 and the limiting groove 2721 ensures that, when forces from other directions act on the limiting mechanism, the groove wall of the limiting groove 2721 can also limit the first limiting element 271, thereby increasing the strength and reliability of the limiting mechanism. When the loading box 20 transitions from the open to the closed state, the first limiting element 271 can disengage from the limiting groove 2721, thus reducing the effect of the limiting mechanism on the loading box 20 during closing. In some other embodiments, the first limiting element 271 may be provided with the limiting groove 2721.The second limiting element 272 protrudes into the limiting groove 2721 after the upper housing arrangement 24 has been opened by a first angle relative to the lower housing arrangement 21.

[0201] Furthermore, it is provided that, in the open state of the loading box 20, the angle between the extension direction of the first limiting element 271 and the extension direction of the second limiting element 272 is an obtuse angle. In this way, the second limiting element 272 or the first limiting element 271 can project smoothly into or release from the limiting groove 2721, even if they are of short length. If the extension direction of the first limiting element 271 and the extension direction of the second limiting element 272 form a right angle or an acute angle, respectively, the limiting groove 2721 must be longer to ensure smooth release of the first limiting element 271 or the second limiting element 272. This increases the overall volume of the rotary shaft mechanism 25 and requires more space in the loading box 20.

[0202] In some embodiments, the connection fit between the lower housing assembly 21, the limiting mechanism, and the rotary shaft mechanism 25 can be illustrated by the following exemplary description. The lower housing assembly 21 is provided internally with two first support elements 215, which are spaced apart from each other in the axial direction of the rotary shaft 253, and with a first reinforcing element 216 between the two first support elements 215. The first reinforcing element 216 can refer to a reinforcing rib structure or a structure whose thickness is greater compared to the other side walls of the loading box 20. The first reinforcing element 216 increases the structural strength of the loading box 20 so that the loading box 20 can stably support the rotary shaft mechanism 25 and the limiting mechanism. The two first support elements 215 are each provided with a first engagement groove 2151.The first mounting base 256 comprises a first plate-shaped main body 2561. The first plate-shaped main body 2561 is inserted into the first engagement grooves 2151 of the two first support parts 215 in the direction of the lower edge of the lower housing assembly 21, with the first plate-shaped main body 2561 bearing against the first reinforcement part 216. On the one hand, the first reinforcement part 216 can improve the structural strength of the lower housing assembly 21 itself. On the other hand, the interaction of the first mounting base 256 with the first reinforcement part 216 can increase the strength when the rotary shaft mechanism 25 interacts with the lower housing assembly 21, thus facilitating assembly of the rotary shaft mechanism 25 with the lower housing assembly 21.Optionally, the lower housing assembly 21 comprises a lower housing body 213 and a lower housing lining 214, wherein the first support parts 215, the first reinforcement part 216 and the first mounting base 256 are arranged between the lower housing body 213 and the lower housing lining 214.

[0203] In some embodiments, the first mounting base 256 further comprises two first extension sections 2562. The two first extension sections 2562 extend from the first plate-shaped main body 2561 towards the first reinforcement section 216, with the first reinforcement section 216 being located between the two first extension sections 2562. The first extension sections 2562 project beyond the upper edge of the first plate-shaped main body 2561 and are provided with first pivot shaft holes through which the pivot shaft 253 can pass. The first limiting element 271 is located at the end of the first extension section 2562 facing away from the first plate-shaped main body 2561.In this way, the stability of the interaction between the first mounting base 256 and the first reinforcement part 216 is increased, and the structural strength of the first limiting element 271 and the first mounting base 256 is sufficiently ensured to increase the stability of the loading box 20 in the open state.

[0204] In some embodiments, the connection fit between the upper housing assembly 24, the limiting mechanism, and the rotary shaft mechanism 25 can be illustrated by the following exemplary description. The upper housing assembly 24 is provided internally with two second support parts 243, which are spaced apart from each other in the axial direction of the rotary shaft 253. The two second support parts 243 are each provided with a second engagement groove 2431. The second mounting base 257 comprises a second plate-shaped main body 2571 and two second extension parts 2572. The second plate-shaped main body 2571 is inserted into the second engagement grooves 2431 of the two second support parts 243 in the direction of the upper edge of the upper housing assembly. The second extension parts 2572 are connected to the second plate-shaped main body 2571 and extend in the direction of the slot 247.The second extension sections 2572 are provided with second pivot shaft holes through which the pivot shaft 253 can pass. The first limiting element 271 is arranged on the second extension section 2572. In this way, the strength of the interaction between the pivot shaft mechanism 25 and the upper housing assembly 24 can be increased, and the pivot shaft mechanism 25 can be more easily assembled with the upper housing assembly 24.

[0205] Furthermore, the upper housing assembly 24 is provided internally with second reinforcing parts 246, each located at one end of the slot 247. The second extension part 2572 comprises a first partial extension part 2572a, located between the two second reinforcing parts 246, and a second partial extension part 2572b, which is connected to the first partial extension part 2572a and extends axially along the rotating shaft 253. The second partial extension part 2572b is further connected to the second reinforcing part 246. For example, the second partial extension part 2572b can interact with the second reinforcing part 246 by means of fasteners such as screws or rivets to increase the strength and stability when the first mounting base 256 interacts with the upper housing assembly 24.

[0206] Combined with Fig. Figure 22 shows by way of example that the charging box 20 can comprise a magnetically conductive element 261, which is arranged in the lower housing assembly 21, and a permanent magnet 262, which is arranged in the upper housing assembly 24. For example, it is provided that the magnetically conductive element 261 is attached to an inner side of the lower housing lining 214 facing away from the upper housing assembly 24, and that the permanent magnet 262 is attached to an inner side of the upper housing lining 242 facing away from the lower housing assembly 21. This helps to reduce the distance between the magnetically conductive element 261 and the permanent magnet 262 when the charging box 20 is closed. The main control circuit board 221 is provided with a Hall sensor 223, i.e., the Hall sensor 223 is attached directly to the main control circuit board 221. In addition, the Hall sensor 223 is arranged adjacent to the magnetically conductive element 261.When the charging box 20 changes from the open to the closed state, the permanent magnet 262 magnetizes the magnetically conductive element 261 to varying degrees. The Hall sensor 223 induces the magnetic field of the magnetically conductive element 261 to detect the open or closed state. In other words, in the closed state, the magnetically conductive element 261 allows the magnetic field generated by the permanent magnet 262 to be more strongly concentrated towards the Hall sensor 223. This helps to increase the reliability of the detection by the Hall sensor 223 and to reduce the volume of the permanent magnet 262.

[0207] In contrast to the prior art, where the Hall sensor 223 is attached to the inside of the lower housing lining 214 and connected to the main control circuit board 221 via wires, the Hall sensor 223 is attached directly to the main control circuit board 221 in the present technical solution using the method described above. This simplifies the wiring of the charging box 20.

[0208] Combined with Fig. 22 and Fig. Figure 23 shows by way of example that an orthogonal projection of each of the profiled recesses 211 and an orthogonal projection of the magnetically conductive element 261 onto the main control circuit board 221 can be offset from each other in order to allow the magnetically conductive element 261 to be located as close as possible to the permanent magnet 262 when the charging box 20 is closed. For example, when viewing the charging box 20 directly from above, the magnetically conductive element 261 is located at any position relative to a first position (as shown by the dashed block P1 in Figure 23). Fig. 23), a second position (as shown by the dashed block P2 in Fig. 23) and a third position (as shown by the dashed block P3 in Fig. 23), whereby these positions are located peripherally on the two profiled recesses 211.

[0209] Combined with Fig. Figure 23 shows by way of example that when viewing the loading box 20 directly from above, the two profiled recesses 211 are aligned with respect to an axis of symmetry (as indicated by the dashed line SA in Fig. (23) can be arranged in a mirror-image symmetrical manner to allow for the proper placement of the two headphones 10 in the charging case 20. The magnetically conductive element 261 can lie on the axis of symmetry SA and face away from the rotating shaft mechanism 25. This is advantageous for increasing the deviation of the magnetic fields of the magnetically conductive element 261, which are detected by the Hall sensor 223 in the open and closed states shown above, respectively, thereby increasing the reliability of the detection by the Hall sensor 223. It should be noted that the axis of symmetry SA can run parallel to the line segment OP1OP2 or coincide with the line segment OP1OP2.

[0210] Combined with Fig. Figure 22 shows by way of example that the orthogonal projection of the magnetically conductive element 261 and an orthogonal projection of the Hall sensor 223 onto the main control circuit board 221 can overlap, at least partially. This contributes to reducing the magnetic gap between the magnetically conductive element 261 and the Hall sensor 223, thereby concentrating the magnetic field generated by the permanent magnet 262 more strongly towards the Hall sensor 223. This is particularly the case in the closed state shown above. The Hall sensor 223 can be arranged on a side of the main control circuit board 221 facing the magnetically conductive element 261 in order to reduce the magnetic gap between the magnetically conductive element 261 and the Hall sensor 223.The Hall sensor 223 and the magnetically conductive element 261 can be arranged at a distance from each other in the normal direction of the main control circuit board 221 in order to reduce the risk of a collision between the magnetically conductive element 261 and the Hall sensor 223, especially under extreme conditions such as the dropping of the charging box 20.

[0211] Combined with Fig. Figure 22 shows, by way of example, that in the closed state described above, an orthogonal projection of the permanent magnet 262 and the orthogonal projection of the magnetically conductive element 261 onto the main control circuit board 221 can overlap, at least partially. This contributes to reducing the magnetic gap between the permanent magnet 262 and the magnetically conductive element 261, thereby concentrating the magnetic field generated by the permanent magnet 262 more strongly towards the Hall sensor 223. This is particularly the case in the closed state described above.

[0212] Combined with Fig. 33 is shown as an example (where the Fig. Figure 33 (a structural schematic sectional view of the charging box 20 in the closed state shows) indicates that the charging box 20 can comprise a lower housing assembly 21, an upper housing assembly 24, a main control circuit board 221, and a magnetically attracting structure located in the lower housing assembly 21, as well as an upper housing magnet located in the upper housing assembly 24. The upper housing magnet can be the permanent magnet 262 mentioned above. The Hall sensor 223 can be located in the lower housing assembly 21, and the Hall sensor 223 can be electrically connected to the main control circuit board 221. The magnetically attracting structure is used to maintain the recording state of the headphones 10 in the charging box 20 by magnetic attraction.Based on this, the Hall sensor 223 can detect the closing of the upper housing assembly 24 during the closing process by sensing the approach of the magnet of the upper housing, thus enabling the closing detection of the charging box 20. The Hall sensor 223 can be either a unipolar Hall switch with S-pole release or a unipolar Hall switch with N-pole release. This is not explicitly restricted. The present application is described below using the Hall sensor 223 with S-pole release as an example. The same principle applies to the Hall sensor 223 with N-pole release, which will not be explained again here.It is understandable that a person skilled in the art in this field can adapt the relevant magnetic pole properties in the case of the Hall sensor 223 with N-pole triggering, based on the relevant principles described below for the Hall sensor 223 with S-pole triggering, in order to achieve the same or a similar technical effect. Therefore, the technical solution for the Hall sensor 223 with N-pole triggering also falls within the scope of protection of this application.

[0213] It should be noted that the Hall sensor 223 has two output states, each capable of producing a high or a low level. The Hall sensor 223 has a sensor surface, and the magnetic field at the Hall sensor 223 is perpendicular to this sensor surface. The component in the positive direction of the sensor surface acts on the charge carriers of the Hall sensor 223, deflecting them and thus changing the output state of the Hall sensor 223. The specific principle can be found in the prior art, and a detailed description is omitted here. In the example of the Hall sensor 223 with S-pole triggering, as the S-pole of the magnet gradually approaches the Hall sensor 223, the component of the magnetic field generated by the magnet that is perpendicular to the positive direction of the sensor surface gradually increases.When this component exceeds a certain threshold (e.g., at a magnetic field strength of 2 mT or 3 mT), the Hall sensor 223 switches from a high level to a low level.

[0214] In the prior art, the charging box 20 further comprises magnetically attracting structures that interact with the headphones 10, or an auxiliary magnet to assist in closing the charging box 20. Besides the magnetic field exerted on the Hall sensor by the approach of the magnet in the upper housing, the magnetic fields of the magnetically attracting structure, the auxiliary magnet, and the like in the charging box 20 also have a certain influence on the Hall sensor. For example, the magnetically attracting structure in the lower housing arrangement 21 can influence the Hall sensor. However, due to its relatively small volume, this influence on the Hall sensor 223 is negligible. In other words, the magnetic field strength exerted on the Hall sensor 223 by the magnetically attracting structure cannot reach the threshold for a change in the output state of the Hall sensor 223 (i.e.,The change in the output state of the Hall sensor 223 is independent of whether the magnetically attractive structure is present. Thus, the main reason for the change in the state of the Hall sensor 223 is that the magnet of the upper housing is approaching. Using the example of the Hall sensor 223 with S-pole triggering, the output state of the Hall sensor 223 cannot be changed by the magnetic field of a small-volume magnetically attractive structure. When the upper housing assembly 24 is closed, the S-pole of the magnet of the upper housing approaches the Hall sensor 223. The Hall sensor 223 is exposed to the magnetic field of the magnet of the upper housing. When the magnetic field strength reaches the threshold for a change in the output state, the output state of the Hall sensor changes. For example, the output state of the Hall sensor 223 can change from a high level to a low level.The circuit in the main control board can be designed to detect that the charging box 20 is closed as soon as a low output level of the Hall sensor 223 is detected.

[0215] In some embodiments, the attractive force exerted on the headphones 10 by the small-volume magnetically attracting structure is relatively weak, which negatively affects the positioning of the headphones 10 in the charging case 20. Therefore, the attractive force on the headphones 10 must be increased by enlarging the volume of the magnetically attracting structure to improve the stability of the headphones' positioning. For example, a magnet with a diameter of 8 to 15 mm and a thickness of 2 to 4 mm can be used for the first magnetically attracting structure. However, as the volume of the magnetically attracting structure increases, the influence of the magnetic field generated by the magnetically attracting structure on the Hall sensor 223 can no longer be neglected.This means that the magnetic field strength of the magnetically attractive structure on the Hall sensor 223 has reached the threshold at which the output state of the Hall sensor 223 changes. In this case, the magnetic field of the magnetically attractive structure can change the output state of the Hall sensor 223 if the charging box 20 is not closed.For example, if the magnet of the upper housing is arranged such that the S-pole points downwards, and the component of the magnetic field of the magnetically attractive structure perpendicular to the sensor surface of the Hall sensor 223 points in the direction of the positive direction of the sensor surface, and the threshold for changing the output state of the Hall sensor 223 is exceeded, the magnetic field at the Hall sensor 223 is indeed strengthened because, when the magnet of the upper housing approaches the Hall sensor 223, the components of the magnetic field of the magnet of the upper housing and of the magnetically attractive structure at the Hall sensor 223 that are perpendicular to the sensor surface point in the same direction. However, the output state of the Hall sensor 223 cannot be changed, which results in the detection of the opening and closing of the box failing.To mitigate the aforementioned technical problems, the following embodiments can be provided in the present application.

[0216] In some embodiments, the interaction between the magnetically attractive structure, the magnet of the upper housing, and the Hall sensor 223 can be configured such that the Hall sensor 223 is in the first state under the influence of the magnetic field of the magnetically attractive structure when the upper housing assembly 24 is open relative to the lower housing assembly 21, and that the magnet of the upper housing counteracts the influence of the magnetic field of the magnetically attractive structure on the Hall sensor 223 when the upper housing assembly 24 is closed relative to the lower housing assembly 21, so that the Hall sensor 223 switches to a different, second state than the first state. The first state here refers to one of the two states in which the Hall sensor 223 outputs a high level or a low level.The second state then refers to the state other than the first state, in which the Hall sensor 223 outputs a high level or a low level. In other words, the design of the interaction between the magnetically attractive structure, the magnet of the upper housing, and the Hall sensor 223 allows the output state of the Hall sensor 223 to change under the influence of the magnet of the upper housing when the charging box 20 is closed.

[0217] The above embodiments are also described using the example of a unipolar Hall switch with S-pole triggering. In this case, the magnetic field of the magnetically attractive structure on the Hall sensor 223 reaches the threshold for changing the output state of the Hall sensor 223 (i.e., in this case, the presence of the magnetically attractive structure influences the output state of the Hall sensor 223 compared to the state in which the Hall sensor 223 is completely undisturbed by the magnetic field). For example, the magnetic field strength is greater than 3 mT, and the Hall sensor 223 is in the first state and outputs a low level.In this case, to ensure the effectiveness of the closing detection, the magnetic field at the Hall sensor 223 must change when the magnet of the upper housing approaches the Hall sensor 223 during the closing of the upper housing assembly 24, so that the Hall sensor 223 is in the second state, i.e., outputting a high level. Effective closing detection can thus be achieved by configuring the circuitry in the main control board to detect that the charging box 20 is closed as soon as a high output level is detected by the Hall sensor 223. Specifically, when the upper housing assembly 24 is closed relative to the lower housing assembly 21, the polarity of the magnetic pole facing the upper housing assembly 24 from the magnetically attracting structure is opposite to the polarity of the magnetic pole facing the lower housing assembly 21 from the upper housing magnet.For example, the S-pole of the magnetically attracting structure is directed towards the upper housing assembly 24, and the angle between the line connecting the magnetically attracting structure to the Hall sensor 223 and the sensor surface of the Hall sensor 223 is less than 45 degrees. Therefore, the component of the magnetically attracting structure that is perpendicular to the sensor surface of the Hall sensor 223 points in the positive direction of the sensor surface, thus triggering the Hall sensor 223 into the first state, i.e., the low level. When the charging box 20 is closed, the N-pole of the magnet of the upper housing points towards the lower housing assembly 21. Thus, when the charging box 20 is closed, the component of the magnet of the upper housing that is perpendicular to the sensor surface of the Hall sensor 223 points in the negative direction of the sensor surface.In other words, when the charging box 20 is closed, the magnetic fields of the magnet in the upper housing and the magnetically attractive structure on the Hall sensor 223 cancel each other out. The component of the combined magnetic field of the magnetically attractive structure and the magnet in the upper housing that is perpendicular to the sensor surface is therefore smaller than the trigger threshold of the Hall sensor 223. This component of the combined magnetic field, perpendicular to the sensor surface, even points in the negative direction of the sensor surface. This triggers the Hall sensor 223 into the second state, i.e., the high-level state. The main control board 221 can detect whether the charging box 20 is closed by sensing the output state of the Hall sensor 223. In this way, smooth closing detection of the charging box 20 can be ensured even if the Hall sensor 223 malfunctions due to interference from the magnetically attractive structure.

[0218] In some embodiments, the magnetic field distribution of the upper housing magnet on the Hall sensor 223 can be adjusted to match the magnetic field distribution of the magnetically attractive structure on the Hall sensor 223, so that the direction of the overall magnetic field acting on the Hall sensor 223 can be changed as the upper housing magnet approaches the Hall sensor 223. The different magnetic field distribution of the upper housing magnet on the Hall sensor 223 can be reflected by different physical parameters of the upper housing magnet.

[0219] In some embodiments, the diameter of the magnet in the upper housing can range from 4 to 6 mm and the thickness of the magnet in the upper housing from 1 to 8 mm. For example, see below. Fig. 34 referenced (whereby Fig. Figure 34 shows a schematic representation of the simulation results of the magnetic field of the magnet of the upper cover at different thicknesses on the Hall sensor 223). Fig. Figure 34 (a) shows a schematic representation of the simulation results of the magnetic field at the Hall sensor 223 when the charging box 20 is in the open state and in the closed state respectively, without the headphones 10 being placed in it. Fig. Figure 34(b) shows a schematic representation of the simulation results of the magnetic field at the Hall sensor 223 when the charging box 20 with a headphone 10 placed inside it is in the open state and in the closed state, respectively. The positive and negative values ​​in Fig. The numbers 34 represent the positive and negative directions of the overall magnetic field near the Hall sensor relative to the sensor area. For example, if a permanent magnet with a diameter of 10 mm and a thickness of 2.5 mm is used for the magnetically attractive structure, and there are no headphones 10 in the charging case 20, the magnetically attractive structure generates a magnetic field at the Hall sensor 223. The direction of this magnetic field points towards the positive direction of the sensor area of ​​the Hall sensor 223, and its strength is 6.5 mT. At this point, the Hall sensor 223 is in a low-level state under the influence of the magnetically attractive structure.When the upper housing assembly 24 is closed, the magnetic field generated by the magnetically attractive structure at the Hall sensor 223 is balanced by the magnet of the upper housing and then reversed, so that the direction of the magnetic field at the Hall sensor 223 points towards the negative direction of the sensor surface and the magnetic field strength changes to 5.1 mT. At this point, the Hall sensor 223 is in a high-level state. Different dimensions of the magnet of the upper cover have different effects on the Hall sensor 223. For example, if the diameter of the magnet of the upper cover is 5 mm, the strength of the reversed magnetic field at the Hall sensor 223 gradually increases with increasing thickness of the magnet of the upper cover.

[0220] In some embodiments, the earphone 10 is provided with the first magnetically attractive element, which interacts with the magnetically attractive structure. The first magnetically attractive element is configured such that the Hall sensor 223 is in the first state when the earphone 10 is placed in the charging case 20 and the upper housing assembly 24 is in the open state, and that the Hall sensor 223 is in the second state when the earphone 10 is placed in the charging case 20 and the upper housing assembly 24 is in the closed state. When the earphone 10 is placed in the charging case 20, the first magnetically attractive element in the earphone 10 also influences the magnetic field at the Hall sensor 223, in a manner distinct from the influence of the magnetically attractive structure.The component of the first magnetically attractive element on the Hall sensor 223 that is perpendicular to the sensor surface can point either in the positive direction or in the negative direction of the sensor surface. However, the first magnetically attractive element only influences the strength of the magnetic field perpendicular to the sensor surface of the Hall sensor 223 and has no influence on the direction of the overall magnetic field at this point. In other words, the inserted headphones 10 have no influence on the initial state of the Hall sensor 223. For example, in . Fig.34 (b) A schematic representation of the simulation results when the headphones 10 are in the charging case 20. The schematic representation was created using a permanent magnet with a diameter of 10 mm and a thickness of 2.5 mm for the magnetically attractive structure and a permanent magnet with a diameter of 5 mm and a thickness of 2 mm for the magnet of the upper housing. When the headphones 10 are in the charging case 20, the magnetic field at the Hall sensor 223 is a magnetic field with a magnetic field direction pointing in the positive direction of the sensor surface and a magnetic field strength of 7.1 mT. At this time, the Hall sensor 223 outputs a low level. When the upper housing assembly 24 is closed, the magnetic field at the Hall sensor 223 is reversed by the magnet of the upper housing into a magnetic field whose direction pointes in the negative direction of the sensor surface and whose strength is 4.5 mT.At this point, the Hall sensor 223 outputs a high level.

[0221] In some embodiments, the headphones 10 further comprise a second magnetically attractive element that is independent of the first magnetically attractive element. The first magnetically attractive structure comprises a second magnetically attractive structure that interacts magnetically with the second magnetically attractive element. The first magnetically attractive structure 231 and the first magnetically attractive element in the headphones 10 can form a first magnetically attractive matching pair, while the second magnetically attractive structure 232 and the second magnetically attractive element in the headphones 10 can form a second magnetically attractive matching pair. Through the aforementioned first magnetically attractive matching pair and the aforementioned second magnetically attractive matching pair, the electrode terminals 222 and the electrode terminals 151 come into unambiguous contact with each other.The electrode clamps 222 and 151 are located after the pairing between the first magnetically attracted matching pair and the second magnetically attracted matching pair, thus ensuring better contact between the earphone 10 and the charging case 20. The volume of the second magnetically attracted element or structure is smaller than the volume of the first magnetically attracted element or structure 231. The distance between the Hall sensor 223 and the first magnetically attracted structure 231 is smaller than the distance between the Hall sensor 223 and the second magnetically attracted structure. In this way, the influence of the second magnetically attracted structure on the magnetic field at the Hall sensor 223 can be reduced, thereby minimizing disturbances to the output state of the Hall sensor 223.

[0222] In some embodiments, the lower housing assembly 21 is provided internally with a magnetically conductive element 261. The magnetically conductive element 261 can modify the magnetic field distribution of the magnet of the upper housing, thereby concentrating the magnetic field of the magnet of the upper housing to enhance its influence on the Hall sensor 223. When the upper housing assembly 24 is closed, the magnet of the upper housing gradually approaches the magnetically conductive element 261, causing the magnetic field of the magnet of the upper housing to magnetize the magnetically conductive element 261. The magnetically conductive element 261 can then influence the magnetic field distribution at the Hall sensor 223.The magnetic field generated by the magnetically conductive element 261 is further used to counteract the effect of the magnetically attractive structure on the magnetic field at the Hall sensor 223, causing the Hall sensor 223 to switch to a second state that differs from the first. When the charging box 20 changes from the open to the closed state, the magnet of the upper housing magnetizes the magnetically conductive element 261 to varying degrees. The Hall sensor 223 induces the magnetic field of the magnetically conductive element 261 to detect the open or closed state described above. In other words, in the closed state described above, the magnetically conductive element 261 allows the magnetic field generated by the magnet of the upper housing to be more strongly concentrated towards the Hall sensor 223.This helps to increase the reliability of the detection by the Hall sensor 223 and to reduce the volume of the magnet in the upper housing. In contrast to the prior art, where the Hall sensor 223 is attached to the inside of the lower housing lining 214 and connected to the main control circuit board 221 via wires, the above method allows the Hall sensor 223 to be mounted directly on the main control circuit board 221 in the present technical solution. This simplifies the wiring of the charging box 20.

[0223] In some embodiments, the distance between the Hall sensor 223 and the magnetically conductive element 261 can be set smaller than the distance between the Hall sensor 223 and the magnetically attractive structure. This allows the magnetic field concentrated by the magnetically conductive element 261 to be brought closer to the Hall sensor 223, while limiting the magnetic field concentrated by the magnetically conductive element 261 on the magnetically attractive structure. This enhances the effect of the magnetic field concentrated by the magnetically conductive element 261 on the Hall sensor 223 and simultaneously reduces the effect of the magnetic field of the magnetically attractive structure, thus contributing to the reversal of the magnetic field at the Hall sensor 223.

[0224] In some embodiments, the orthogonal projections of the magnet of the upper housing and the magnetically conductive element 261 can be arranged in the thickness direction of the charging box 20 such that they overlap at least partially when the upper housing assembly 24 is in the closed state. This allows the distance between the magnet of the upper housing and the magnetically conductive element 261 to be adjusted in the first or second reference direction. By reducing the distance between the magnet of the upper housing and the magnetically conductive element 261 in the first or second reference direction, it is advantageous to reduce the magnetic gap between the magnet of the upper housing and the magnetically conductive element 261. This concentrates the magnetic field generated by the permanent magnet 262 more strongly towards the Hall sensor 223.This is particularly true in the closed state described above. Thus, even with a small volume, the magnet of the upper housing can generate a sufficiently strong magnetic field at the Hall sensor 223. When the upper housing assembly 24 is in the closed state, the orthogonal projections of the magnet of the upper housing and the magnetically conductive element 261 can optionally coincide in the thickness direction with respect to the centroid.

[0225] In some embodiments, the distance between the magnet of the upper housing and the magnetically conductive element 261 in the thickness direction can be adjusted by setting the relative position between the magnetically conductive element 261 and the magnet of the upper housing when the upper housing assembly 24 is closed and mounted in the charging box 20. Reducing the distance between the magnet of the upper housing and the magnetically conductive element 261 in the thickness direction is advantageous for decreasing the magnetic gap between the magnet of the upper housing and the magnetically conductive element 261, thereby improving the ability of the magnetically conductive element 261 to concentrate the magnetic field of the magnet of the upper housing. This results in a stronger concentration of the magnetic field generated by the permanent magnet 262 towards the Hall sensor 223.In this way, when the charging box 20 is closed, it can be ensured that the magnet of the upper housing changes the output state of the Hall sensor 223, while the magnet of the upper housing simultaneously has a smaller volume, thus reducing the volume of the charging box 20. Optionally, when the upper housing assembly 24 is closed, the distance between the surfaces of the magnetically conductive element 261 and the magnet of the upper housing, which are located close to each other, can be set to less than or equal to 5 mm. This allows a certain distance to be created between the magnet of the upper housing and the magnetically conductive element. This allows the side walls of the upper housing assembly and the side walls of the lower housing assembly (i.e.,The upper housing liner 242 and the lower housing liner 214 separate and cover the magnet of the upper housing and the magnetically conductive element 261 from each other, so that neither is exposed between the upper housing assembly 24 and the lower housing assembly 21. No additional openings are required in the upper housing liner 242 and the lower housing liner 214, which increases the structural strength of the charging box 20 and also improves its aesthetic appearance.In other embodiments, when the upper housing arrangement 24 is closed, the magnetically conductive element 261 can be arranged such that its end facing away from the Hall sensor 223 is in direct contact with the underside of the magnet of the upper housing, thereby increasing the magnetization of the magnetically conductive element 261 by the magnet of the upper housing, so that the magnetic field of the magnet of the upper housing is more strongly concentrated on the Hall sensor 223.

[0226] In the thickness direction of the charging box 20, the lower housing assembly 21 is provided with profiled recesses 211, each serving to accommodate one of the headphones 10. An orthogonal projection of each of the profiled recesses 211 onto the main control circuit board 221 is offset from the orthogonal projections of the Hall sensor 223 and the magnet of the upper housing onto the main control circuit board 221. In this way, the Hall sensor 223 can be positioned outside the profiled recess 211, so that the Hall sensor 223 can be located closer to the magnet of the upper housing, which allows the magnet of the upper housing to change the output state of the Hall sensor 223.

[0227] Optionally, the lower housing assembly 21 is also provided internally with an auxiliary magnet, which can be, for example, a magnet to support the magnetic attraction between the upper housing assembly 24 and the lower housing assembly 21, or a magnet to support the interaction of the headphone 10 with the profiled recess 211. The auxiliary magnet is configured such that, when the upper housing assembly 24 is open, the Hall sensor 223 is in the first state, and when the upper housing assembly 24 is closed, the Hall sensor 223 is in the second state. In other words, the auxiliary magnet has no other influence on the initial state of the Hall sensor 223 than the magnetic attraction structure.

[0228] The above-mentioned examples are only some of the embodiments of the present application and do not limit the scope of protection of the present application. Any equivalent transformation with respect to the device or process carried out using the content of the description and drawings of the present application, as well as any direct or indirect application of such content to other related technical fields, also falls within the scope of protection of the present application.

Claims

[1] System comprising a charging case and headphones, characterized by , that the system includes: Headphones, each headphone comprising a core module and a hook structure connected to the core module; a charging box comprising a lower housing arrangement provided with a profiled recess for receiving the headphones, wherein the profiled recess comprises a first profiled recess area corresponding to the core module and a second profiled recess area corresponding to the hook structure; and wherein, in an extension direction of the hook structure, a clearance between a part of the hook structure facing away from the core module and a side wall of the second profiled recess area is larger than a clearance between the core module and a side wall of the first profiled recess area. [2] System according to claim 1, characterized by, that the size of the clearance between the part of the hook structure facing away from the core module and the side wall of the second profiled recess area is in a range of 0.5 to 1.5 mm, and / or that the size of the clearance between the core module and the side wall of the first profiled recess area is in a range of 0.05 to 0.2 mm. [3] System according to claim 1 or 2, characterized by , that the part of the hook structure facing away from the core module includes a battery housing, wherein the space between the battery housing and the side wall of the second profiled recess area is larger than the space between the core module and the side wall of the first profiled recess area. [4] System according to claim 3, characterized by, that the hook structure includes an elastic part that connects the core module to the battery housing; wherein a clearance between the elastic part and the side wall of the second profiled recess area is larger than the clearance between the core module and the side wall of the first profiled recess area when the headphones are inserted into the profiled recess. [5] System according to claim 4, characterized by , that the hook structure comprises a hard part connecting the core module to the elastic part; wherein the clearance between the elastic part and the side wall of the second profiled recess area is larger than the clearance between the hard part and the side wall of the second profiled recess area when the headphone is received in the profiled recess. [6] System according to any one of claims 1 to 5, characterized by, that the core module is provided with a first magnetically attractive element and the lower housing arrangement is provided with a first magnetically attractive structure that interacts with the first magnetically attractive element, wherein the first magnetically attractive element and the first magnetically attractive structure magnetically interact with each other when the headphone is received in the profiled recess. [7] System according to claim 6, characterized by , that the hook structure is provided with a second magnetically attractive element and the lower housing arrangement is further provided with a second magnetically attractive structure that interacts with the second magnetically attractive element, wherein the second magnetically attractive element and the second magnetically attractive structure magnetically interact with each other when the headphone is received in the profiled recess. [8] System according to claim 7, characterized by, that the lower housing arrangement further comprises first electrode clamps located between the first magnetically attractive structure and the second magnetically attractive structure, wherein, after the earphone is inserted into the profiled recess, the first magnetically attractive structure and the first magnetically attractive element in the earphone form a first magnetically attractive matching pair, and the second magnetically attractive structure and the second magnetically attractive element in the earphone form a second magnetically attractive matching pair, such that the first electrode clamps and second electrode clamps in the earphone come into unambiguous contact with each other through the first magnetically attractive matching pair and the second magnetically attractive matching pair. [9] System according to claim 2, characterized by, that the lower housing arrangement is provided with two profiled recesses, wherein the second profiled recess areas of the two profiled recesses are arranged such that they intersect, whereby, when a headphone is inserted into each of the two profiled recesses, the hook structures of the two headphones overlap; and wherein overlap points are formed when the hook structures of the two headphones overlap. [10] System according to claim 9, characterized by , that the areas of the two second profiled recess areas, which are located between two overlapping points and are surrounded by the hook structures, are integrally connected. [11] System according to claim 9, characterized by, that an isolated island area is formed in the areas of the two second profiled recess areas located between two overlap points and surrounded by the hook structures, wherein a clearance between each of the hook structures and a side wall of the isolated island area is larger than the clearance between the core module and the side wall of the first profiled recess area. [12] System according to claim 3, characterized by , that the charging box includes electrode clamps which are used at least for charging, wherein the electrode clamps are not arranged on the battery housing.

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