Earphone charging box

Abstract

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

Description

Technical Field

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

Background Art

[0002] As electronic devices continue to spread, electronic devices have become indispensable social and entertainment tools in people's daily lives, and people's requirements for electronic devices are also becoming increasingly high. Electronic devices such as earphones are widely applied in people's daily lives. By collaborating with terminal devices such as mobile phones and computers, users can enjoy an auditory feast. According to the operating principle of earphones, generally, they are divided into air-conduction earphones and bone-conduction earphones. Generally, according to the way users wear earphones, they are divided into headphones, ear-hook earphones, and canal earphones. Generally, according to the interaction method between earphones and electronic devices, they are divided into wired earphones and wireless earphones. Furthermore, earphones may be housed in a charging box to deal with scenes such as insufficient battery power and not being used, so as to be easy to charge and store. In related technologies, the charging box for earphones has the technical problem of being large in volume and difficult to carry.

Summary of the Invention

Means for Solving the Problems

[0003] This application provides a charging box for earphones. The earphones include a core module and a hook-shaped structure connected to the core module. The charging box includes a lower housing assembly. An imitation groove for housing the earphones is provided in the lower housing assembly. The imitation groove includes a first imitation groove region corresponding to the core module and a second imitation groove region corresponding to the hook-shaped structure. The projections of the first imitation groove region and the second imitation groove region in a first reference direction overlap, and the projections of the first imitation groove region and the second imitation groove region in a second reference direction perpendicular to the first reference direction overlap. By the above method, the charging box of this application can have a small volume.

[0004] In some embodiments, the projections of the first portion of the second groove region and the first groove region in the first reference direction overlap, and the projections of the second portion of the second groove region and the first groove region in the second reference direction overlap.

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

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

[0007] In some embodiments, the lower housing assembly includes two symmetrical grooves, each housing two earphones to be worn in the user's left and right ears, and the core modules of the two earphones are spaced apart along a second reference direction.

[0008] In some embodiments, the lower housing assembly includes two copy grooves, the second copy groove regions of the two copy grooves are positioned to intersect each other, so that when the two copy grooves accommodate the earphones, the hook-shaped structures of the two earphones overlap each other.

[0009] In some embodiments, the hook-shaped structure includes a battery housing and an elastic portion connecting the battery housing and a core module, and the two second copy groove regions are positioned such that the elastic portions of the earphones overlap each other when two earphones are housed.

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

[0011] In some embodiments, the two tracing grooves are mirror-image symmetric with respect to a line connecting the two overlapping points as the axis of symmetry, and the direction of the line connecting the two overlapping points is parallel to a first reference direction or a second reference direction.

[0012] In some embodiments, the two second groove regions are surrounded by hook-shaped structures, and the regions located between the two overlapping points are integrated together.

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

[0014] The beneficial effects of this invention are as follows: By arranging the first and second groove regions so that their projections toward the first reference direction overlap, and their projections toward the second reference direction overlap, when the earphones are placed in the corresponding grooves, the projected length of the charging box occupied by the second groove region toward the first reference direction overlaps with the projected length of the charging box occupied by the first groove region, and the projected length of the charging box occupied by the second groove region toward the second reference direction overlaps with the projected length of the charging box occupied by the first groove region. This reduces the volume of the charging box, making it easier for the user to carry.

[0015] To more clearly explain the technical means in the embodiments of the present application, the drawings necessary for describing the embodiments are briefly introduced below. Clearly, the drawings in the following description are only a few embodiments of the present application, and those skilled in the art can obtain other drawings based on these without requiring any creative effort. [Brief explanation of the drawing]

[0016] [Figure 1] This is a schematic diagram of the anterior contour of the user's ear area as described in this application. [Figure 2] This is a schematic diagram of one embodiment of the earphone according to the present invention. [Figure 3] It is a schematic diagram of the wearing state of an embodiment of the earphone according to the present application. [Figure 4] It is a schematic configuration diagram of an embodiment of the earphone according to the present application. [Figure 5] It is a schematic configuration diagram of an embodiment of the earphone according to the present application. [Figure 6] It is a comparison diagram of frequency response curves measured at the same listening position when the core module in an embodiment of the earphone according to the present application is located at different positions in the ear. [Figure 7] It is a cross-sectional view along the A1-A1 cutting direction of an embodiment of the earphone in FIG. 2. [Figure 8] It is a cross-sectional view along the A2-A2 cutting direction of an embodiment of the earphone in FIG. 2. [Figure 9] It is a schematic configuration diagram of an embodiment of the earphone according to the present application. [Figure 10] It is a schematic configuration diagram of an embodiment of the core housing according to the present application. [Figure 11] It is a schematic configuration diagram of an embodiment of the core housing according to the present application. [Figure 12] It is a schematic configuration diagram of an embodiment of the bracket according to the present application. [Figure 13] It is an enlarged view of the B1 region of an embodiment of the earphone in FIG. 8. [Figure 14] It is an enlarged view of the B2 region of an embodiment of the earphone in FIG. 8. [Figure 15] It is a schematic configuration diagram of an embodiment of the hook-shaped structure according to the present application. [Figure 16] It is a cross-sectional view along the A3-A3 cutting direction of an embodiment of the hook-shaped structure in FIG. 15. [Figure 17] It is a cross-sectional view along another cutting direction perpendicular to the A3-A3 cutting direction of an embodiment of the hook-shaped structure in FIG. 15. [Figure 18] It is an exploded view of an embodiment of the hook-shaped structure in FIG. 15. [Figure 19] It is a schematic configuration diagram of an embodiment of the charging box according to the present application. [Figure 20] Figure 19 is a schematic diagram showing the configuration after the earphones have been housed in one embodiment of the charging box. [Figure 21] This is a schematic diagram of one embodiment of the charging box according to the present invention. [Figure 22] Figure 21 is a cross-sectional view of one embodiment of the charging box along the A4-A4 cutting direction after it has been covered. [Figure 23] Figure 22 is a schematic diagram of one embodiment of the charging box. [Figure 24] Figure 19 is a cross-sectional view of one embodiment of the charging box along the A5-A5 cutting direction. [Figure 25] This is a schematic diagram showing a stopper portion installed in the upper housing assembly of the charging box according to the present invention. [Figure 26] Figure 25 is a schematic diagram showing another viewpoint of the configuration in which the stopper is installed on the upper housing assembly. [Figure 27] This is a cross-sectional view of one embodiment of the charging box of the present invention in an open state. [Figure 28] This is an exploded view of one embodiment of the position limiting mechanism for the charging box of the present invention. [Figure 29] Figure 28 is a schematic diagram of an embodiment of the position limiting mechanism, but not an exploded view. [Figure 30] This is an exploded view of another embodiment of the position limiting mechanism for the charging box of the present invention. [Figure 31] Figure 30 is a schematic diagram of an embodiment of the position limiting mechanism, but not an exploded view. [Figure 32] This is a cross-sectional view of the position limiting structure in Figure 31, along the A6-A6 cutting direction. [Figure 33] This is a cross-sectional view of an embodiment of the charging box of the present invention in a closed state. [Figure 34] This is a schematic diagram showing the results of a magnetic field simulation in a Hall sensor of an embodiment of the charging box of the present invention. [Modes for carrying out the invention]

[0017] The present application will be described in further detail below with reference to the drawings and embodiments. The following embodiments are for illustrative purposes only and do not limit the scope of the present application. Similarly, the following embodiments represent only a portion of the present application, not all embodiments, and all other embodiments that a person skilled in the art could obtain without creative effort are all included within the scope of the present application.

[0018] References to “Examples” in this Application mean that certain features, structures, or properties described in relation to the Examples are included in at least one Example of this Application. Those skilled in the art will understand, both explicitly and implicitly, that the Examples described in this Application can be combined with other Examples.

[0019] As shown in Figure 1, the user's ear portion 100 may include physiological areas such as the external auditory canal 101, conchaecular cavity 102, conchaecular scaphoides 103, triangular fossa 104, antihelix 105, scaphoid fossa 106, helix 107, and antitragus 108. The external auditory canal 101 has a certain depth and extends to the eardrum of the ear, but for the sake of explanation, as shown in Figure 1, unless otherwise specified in this application, the external auditory canal 101 specifically refers to the entrance away from the eardrum (i.e., the ear canal). Furthermore, physiological areas such as the conchaecular cavity 102, conchaecular scaphoides 103, and triangular fossa 104 have a certain volume and depth, and the conchaecular cavity 102 is in direct communication with the external auditory canal 101, that is, the aforementioned ear canal can be easily considered to be located at the bottom of the conchaecular cavity 102.

[0020] Furthermore, because individual differences may exist among different users, there may be dimensional differences in the shape, size, and other aspects of the ear area. To facilitate explanation and mitigate (and ultimately eliminate) individual differences among different users, a simulator such as GRAS 45BC KEMAR, including the head and its (left and right) ear areas, can be manufactured based on ANSI:S3.36, S3.25, and IEC:60318-7 standards. Therefore, the descriptions in this application, "the user puts on the earphones," "the earphones are in the worn state," and "in the worn state," may refer to the earphones of this application being attached to the ear area of ​​the aforementioned simulator. Of course, because individual differences exist among different users, there may be some differences between the situation in which the earphones are worn by a different user and the situation in which the earphones are attached to the ear area of ​​the aforementioned simulator, but such differences should be acceptable.

[0021] In fields such as medicine and anatomy, three basic planes of the human body—the sagittal plane, coronal plane, and horizontal plane—and three basic axes—the sagittal axis, coronal axis, and vertical axis—can be defined. The sagittal plane is a cross-section perpendicular to the ground, cut along the anterior-posterior direction of the body, dividing the body into two parts: left and right. The coronal plane is a cross-section perpendicular to the ground, cut along the lateral direction of the body, dividing the body into two parts: anterior and posterior. The horizontal plane is a cross-section parallel to the ground, cut along the vertical direction of the body, dividing the body into two parts: upper and lower. Accordingly, the sagittal axis is the axis perpendicular to the coronal plane, running along the anterior-posterior direction of the body; the coronal axis is the axis perpendicular to the sagittal plane, running along the lateral direction of the body; and the vertical axis is the axis perpendicular to the horizontal plane, running along the vertical direction of the body. Furthermore, in this application, "anterior side of the ear" is a concept in contrast to "posterior side of the ear," with the former being the side of the ear away from the head and the latter being the side of the ear facing the head, both relating to the user's ear. By viewing the ear of the simulator from the direction in which the coronal axis of the human body is located, a schematic diagram of the anterior contour of the ear shown in Figure 1 can be obtained.

[0022] Exemplary, as shown in Figures 2 to 5, the earphone 10 may include a core module 11 and a hook-shaped structure 12 connected to the core module 11, wherein the core module 11 is located on the front side of the ear when worn, and at least a portion of the hook-shaped structure 12 is located on the rear side of the ear when worn, thereby allowing the earphone 10 to be hooked over the ear when worn. The core module 11 may have a connecting end CE connected to the hook-shaped structure 12 and a free end FE not connected to the hook-shaped structure 12. Furthermore, the core module 11 is positioned so as not to block the ear canal when worn, thereby allowing the earphone 10 to be an "open-type earphone". Because there are individual differences among different users, when the earphone 10 is worn by different users, the core module 11 may partially obstruct the ear canal, but the ear canal will not still be blocked.

[0023] To improve the stability of the earphone 10 when worn, the earphone 10 can be provided in any of the following ways or in combination thereof. Method 1 is to install at least a portion of the hook-shaped structure 12 as a conforming structure that fits to at least one of the rear side of the ear and the head, thereby increasing the contact area between the hook-shaped structure 12 and the ear and / or head, and thereby increasing the resistance of the earphone 10 to fall out of the ear. Method 2 is to install at least a portion of the hook-shaped structure 12 as an elastic structure that has a certain amount of deformation when worn, thereby increasing the positive pressure of the hook-shaped structure 12 on the ear and / or head, and thereby increasing the resistance of the earphone 10 to fall out of the ear. Method 3 is to install at least a portion of the hook-shaped structure 12 in the worn state so as to contact the head and generate a reaction force that presses against the ear, thereby increasing the resistance of the earphone 10 to fall out of the ear by pressing the core module 11 to the front side of the ear. The fourth feature is that the core module 11 and the hook-shaped structure 12 are positioned to clamp physiological areas such as the antihelix region and the conchaecular cavity region from both the front and back sides of the ear when worn, thereby increasing the resistance to the earphone 10 falling out of the ear. The fifth feature is that the core module 11 or the auxiliary structure connected thereto is positioned so that at least a portion of it is inserted into physiological areas such as the conchaecular cavity, conchaecular scaphodes, triangular fossa, and scaphoid fossa, thereby increasing the resistance to the earphone 10 falling out of the ear.

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

[0025] In addition to being inserted into the concha of the ear, the free end FE of the core module 11 may also be positioned so that its orthogonal projection is contained within the antihelix, or so that its orthogonal projection is contained within the left and right sides of the head and in a position anterior to the ear along the sagittal axis of the human body. In other words, the hook-shaped structure 12 can support the core module 11 so that it is attached to the concha of the ear, the antihelix, or the anterior side of the ear.

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

[0027] Furthermore, when worn, the core module 11 may be installed in a circular, elliptical, rounded square, or rounded rectangular shape when viewed from the direction in which the coronal axis is located. When the core module 11 is installed in a circular, elliptical, or other shape, the connection surface may be the arc-shaped side surface of the core module 11. When the core module 11 is installed in a rounded square or rounded rectangular shape, the connection surface may include the lower side surface LS, upper side surface US, and rear side surface RS, which will be described later. In addition, the core module 11 may have a longitudinal direction Y and a width direction Z that are perpendicular to the thickness direction X and orthogonal to each other. The longitudinal direction Y may be defined as the direction in which the core module 11 approaches or moves away from the back of the user's head when worn, and the width direction Z may be defined as the direction in which the core module 11 approaches or moves away from the top of the user's head when worn. Therefore, for the sake of explanation, in this embodiment, the core module 11 will be installed in a rounded rectangular shape as an example. The length of the core module 11 in the longitudinal direction Y may be greater than the width of the core module 11 in the width direction Z.

[0028] For example, as shown in Figures 2, 3, and 5, when worn, the connecting end CE is positioned closer to the top of the head than the free end FE, so that the free end FE is inserted into the concha when viewed from the direction in which the coronal axis of the human body is located. Based on this, the angle between the longitudinal direction Y and the direction in which the sagittal axis of the human body is located may be 15° to 60°. If the aforementioned angle is too small, it is likely to cause the free end FE not to be inserted into the concha and the sound vent 111a of the core module 11 to be too far from the external auditory canal. Similarly, if the aforementioned angle is too large, it is likely to cause the free end FE not to be inserted into the concha and the external auditory canal to be blocked by the core module 11. In other words, by allowing the free end FE to be inserted into the concha cavity and ensuring that the sound outlet 111a in the core module 11 is at an appropriate distance from the external auditory canal, the user can hear more sound waves generated by the core module 11 when the external auditory canal is not blocked.

[0029] For example, as shown in Figure 4, the orthographic projection of the hook-shaped structure 12 onto a reference plane perpendicular to the longitudinal direction Y (for example, the XZ plane in Figure 4) partially overlaps with the orthographic projection of the free end FE onto the same reference plane. The overlapping region formed by the aforementioned orthographic projection of the hook-shaped structure 12 onto the reference plane and the orthographic projection of the free end FE onto the same reference plane is located between the inner surface IS and the outer surface OS in the thickness direction X. In this way, the core module 11 and the hook-shaped structure 12 can not only clamp the ear portion from both the front and rear sides, but the resulting clamping force mainly manifests as compressive stress, which is advantageous in improving the stability and comfort of the earphone 10 when worn.

[0030] Furthermore, as shown in Figures 2, 4, 5, and 9, the hook-shaped structure 12 may also include an elastic wire 121 connected to the core module 11 and a battery housing 123 connected to one end of the elastic wire 121 away from the core module 11. A battery 14 coupled to the core module 11 is placed inside the battery housing 123, and the orthographic projection of the battery housing 123 onto the reference plane partially overlaps with the orthographic projection of the free end FE onto the same reference plane. As a result, when the free end FE abuts against the concha, the battery housing 123 can support the ear from the rear side, which is advantageous for improving the stability of the earphone 10 when worn. The battery housing 123 may also include a lid case 1231 connected to the elastic wire 121 and a battery magazine 1232 connected to the lid case 1231, with the battery magazine 1232 and the lid case 1231 working together to form a cavity structure for housing the battery 14.

[0031] Exemplary, as shown in Figure 5, the core module 11 may, when worn, have an upper surface US along the width direction Z away from the external auditory canal, a lower surface LS toward the external auditory canal, and a posterior surface RS connecting the upper surface US and the lower surface LS, the posterior surface RS being located at one end toward the occipital region in the longitudinal direction Y when worn, and at least a portion of it being located within the concha. The edge of the hook-shaped structure 12 toward the core module 11 in the orthogonal projection onto a reference plane perpendicular to the thickness direction X (e.g., the YZ plane in Figure 5) may be divided into a first segment S1 and a second segment S2 that transition in a continuous arc, the boundary point DP between the first segment S1 and the second segment S2 being the position where the aforementioned edge is furthest from the upper surface US along the width direction Z. Furthermore, the overall curvature of the first segment S1 of the hook-shaped structure 12 is greater than the overall curvature of the second segment S2 of the hook-shaped structure 12. In this way, while allowing the free end FE to be inserted into the concha cavity, the hook-shaped structure 12 can work in cooperation with the core module 11 to provide an appropriate clamping force.

[0032] Furthermore, the overall degree of curvature described above can qualitatively explain the degree of curvature of different segments of the hook-shaped structure 12, and the radius of curvature of each segment may be a constant value or may change continuously. Therefore, within the first segment S1, there is at least one point whose radius of curvature is smaller than that of any point in the second segment S2. Moreover, the overall degree of curvature can also be quantitatively characterized by the mean radius of curvature, that is, first the radii of curvature of N points in each segment are determined and then the average value is taken.

[0033] Furthermore, in the direction in which the hook-shaped structure 12 extends, the length of the second segment S2 may be greater than the length of the first segment S1 so that the hook-shaped structure 12 clamps the ear portion together with the core module 11 and increases the area in which the hook-shaped structure 12 contacts the user's skin. This is advantageous for improving the stability of the earphone 10 when worn.

[0034] In some embodiments, the earphone 10 has a first reference line segment RL1 parallel to the width direction Z, the starting point of the first reference line segment RL1 is the point where the first reference line segment RL1 intersects with the upper surface US, and the ending point is the boundary point DP. The second reference line segment RL2, third reference line segment RL3, and fourth reference line segment RL4, which will be described later, move away from the starting point of the first reference line segment RL1 in the width direction Z. The length of the first reference line segment RL1 may be 13 mm to 20 mm. If the length of the first reference line segment RL1 is too small, it is likely that the free end FE cannot be inserted into the concha, and the sound vent 111a in the core module 11 will be too far from the external auditory canal. Similarly, if the length of the first reference line segment RL1 is too large, it is likely that the free end FE cannot be inserted into the concha, and the external auditory canal will be blocked by the core module 11. In other words, by allowing the free end FE to be inserted into the concha cavity and ensuring that the sound outlet 111a in the core module 11 is at an appropriate distance from the external auditory canal, the user can hear more sound waves generated by the core module 11 when the external auditory canal is not blocked.

[0035] Furthermore, a second reference line segment RL2, which passes through the first reference line segment RL1 at a point 1 / 4 of the way along and is parallel to the longitudinal direction Y, intersects the first segment S1 and the second segment S2 at a first intersection P1 and a second intersection P2, respectively, where the distance between the first intersection P1 and the starting point of the first reference line segment RL1 may be 9mm to 15mm, and the distance between the second intersection P2 and the starting point of the first reference line segment RL1 may be 12mm to 19mm. A third reference line segment RL3, which passes through the first reference line segment RL1 at a point 1 / 2 of the way along and is parallel to the longitudinal direction Y, intersects the first segment S1 and the second segment S2 at a third intersection P3 and a fourth intersection P4, respectively. Furthermore, the distance between the third intersection P3 and the starting point of the first reference line segment RL1 may be 11mm to 18mm, and the distance between the fourth intersection P4 and the starting point of the first reference line segment RL1 may be 12mm to 19mm. The fourth reference line segment RL4, which passes through 3 / 4 of the way along the first reference line segment RL1 and is parallel to the longitudinal direction Y, intersects the first segment S1 and the second segment S2 at the fifth intersection P5 and the sixth intersection P6, respectively. The distance between the fifth intersection P5 and the starting point of the first reference line segment RL1 may be 12mm to 19mm, and the distance between the sixth intersection P6 and the starting point of the first reference line segment RL1 may be 12mm to 19mm. Thus, when the free end FE is inserted into the concha cavity and the sound vent 111a in the core module 11 is at an appropriate distance from the external auditory canal, the hook-shaped structure 12 fits better to the ear.

[0036] In some embodiments, a fifth reference line segment RL5 is provided between the second segment S2 and the rear side RS, having the shortest distance along the longitudinal direction Y, and the length of the fifth reference line segment RL5 may be 2 mm to 3 mm. If the length of the fifth reference line segment RL5 is too small, the clamping force on the ear by the core module 11 and the hook-shaped structure 12 will be too large, which is likely to cause discomfort when worn. If the length of the fifth reference line segment RL5 is too large, the clamping force on the ear by the core module 11 and the hook-shaped structure 12 will be too small, which is likely to cause instability when worn. In other words, this achieves both stability and comfort when wearing the earphone 10.

[0037] Furthermore, the fifth reference line segment RL5 is defined as follows: The starting point of the fifth reference line segment RL5 is the point where it intersects the rear side surface RS, and the ending point of the fifth reference line segment RL5 is the point where it intersects the second segment S2. The orthographic projection along the longitudinal direction Y of the intersection point of the first reference line segment RL1 and the upper side surface US intersects the second segment S2 at the seventh intersection point P7, and the orthographic projection along the longitudinal direction Y of the intersection point of the extension of the first reference line segment RL1 and the lower side surface LS intersects the second segment S2 at the eighth intersection point P8. The distance between the seventh intersection point P7 and the starting point of the fifth reference line segment RL5 may be 5mm to 9mm, and the distance between the eighth intersection point P8 and the starting point of the fifth reference line segment RL5 may be 5mm to 9mm. In this way, the hook-shaped structure 12 is made to fit the ear better when the earphone 10 is being worn, achieving both stability and comfort.

[0038] For example, as shown in Figures 7, 8, and 5, the core module 11 may include a core housing 111 connected to a hook-shaped structure 12 and a speaker 112 installed inside the core housing 111. When the core housing 111 is fitted, a sound vent 111a is provided on the inner surface facing the ear (for example, the inner surface IS), and sound waves generated by the speaker 112 propagate through the sound vent 111a to the ear canal. The sound vent 111a may be installed on the side corresponding to the lower surface LS of the core housing 111, or it may be installed in the corner between the inner surface and the lower surface LS. Furthermore, the speaker 112 may include a magnetic circuit system, a voice coil inserted into the magnetic circuit system, and a diaphragm connected to the voice coil. The magnetic field generated after the voice coil is energized and the magnetic field formed by the magnetic circuit system interact with each other, causing the diaphragm to generate mechanical vibrations, which in turn generate sound through propagation in a medium such as air.

[0039] Furthermore, as shown in Figures 7 to 9, the earphone 10 may also include a main control circuit board 13 installed inside the core housing 111 and a battery 14 installed at one end of the hook-shaped structure 12 away from the core module 11. The battery 14 and the speaker 112 are each coupled to the main control circuit board 13, allowing the battery 14 to supply power to the speaker 112 under the control of the main control circuit board 13. Of course, both the battery 14 and the speaker 112 may be installed inside the core housing 111, and the battery 14 may be closer at its connection end CE, while the speaker 112 may be closer at its free end FE.

[0040] For example, as shown in Figures 3 and 1, since the concha cavities have a certain volume and depth, after the free end FE is inserted into the concha cavities, a certain gap can be maintained between the inner surface IS of the core housing 111 and the concha cavities. In other words, the core module 11 can cooperate with the concha cavities to form an auxiliary cavity that communicates with the external auditory canal when worn, and at least a portion of the sound vent 111a is located within the aforementioned auxiliary cavity. Thus, when worn, the sound waves generated by the speaker 112 and propagated through the sound vent 111a are limited by the aforementioned auxiliary cavity. That is, the aforementioned auxiliary cavity can focus the sound waves, allowing more sound waves to propagate into the external auditory canal, thereby improving the volume and quality of the sound heard by the user in the near world, and thus is advantageous for improving the acoustic effect of the earphones 10. Furthermore, by positioning the core module 11 so as not to block the external auditory canal when worn, the aforementioned auxiliary cavity can be installed in a semi-open manner. Thus, the sound waves generated by the speaker 112 and propagated through the sound vent 111a mostly propagate into the external auditory canal, while a small portion propagates to the outside of the earphone 10 and the ear through the gap between the core module 11 and the ear (for example, the part of the concha not covered by the core module 11), thereby causing a first sound leakage in the far field. At the same time, the core module 11 generally has acoustic holes (for example, the decompression holes 111c described later), and the sound waves propagated through the aforementioned acoustic holes generally cause a second sound leakage in the far field. Furthermore, since the phases of the first sound leakage and the phases (approaching) of the second sound leakage are in opposite phases to each other, they can cancel each other out in the far field, thus being advantageous in reducing sound leakage from the earphone 10 in the far field.

[0041] Furthermore, the earphone 10 may include an adjustment mechanism connecting the core module 11 and the hook-shaped structure 12, allowing different users to adjust the relative position of the core module 11 in the ear using the adjustment mechanism while wearing the earphone, thereby positioning the core module 11 in an appropriate location, so that the core module 11 and the concha cavity form the auxiliary cavity. In addition, the presence of the adjustment mechanism also allows the user to adjust the earphone 10 to be worn in a more stable and comfortable position.

[0042] As an example, as shown in Figure 6, the auditory effect after a user wears the earphone 10 is simulated by first attaching the earphone 10 to the simulator, then adjusting the position of the core module 11 in the ear portion of the simulator, and then measuring the frequency response curve of the earphone 10 using a detector (e.g., a microphone) placed inside the external auditory canal of the simulator (e.g., the position of the eardrum, i.e., the auditory position). The aforementioned frequency response curve can characterize the relationship between the magnitude of vibration and the frequency, the horizontal coordinate of the aforementioned frequency response curve can represent the frequency in units of Hz, and the vertical coordinate of the aforementioned frequency response curve can represent the magnitude of vibration in units of dB. In Figure 6, curve 6_1 represents the frequency response curve when the core module 11 does not form the auxiliary cavity with the concha in the worn state, and curve 6_2 represents the frequency response curve when the core module 11 cooperates with the concha to form the auxiliary cavity in the worn state. Based on this, from the comparison diagram of frequency response curves shown in Figure 6, it can be directly and unambiguously determined that curve 6_2 is located above curve 6_1 overall, meaning that the formation of the auxiliary cavity between the concha and the concha when the core module 11 is worn is advantageous for improving the acoustic effect of the earphone 10, compared to the case where the core module 11 does not form the auxiliary cavity between the concha and the concha when worn.

[0043] Illustratively, as shown in Figures 7, 9, and 11, the core module 11 may include a flexible fitting block 1131 installed outside the core housing 111, the hardness of which is less than that of the core housing 111. The core housing 111 may be a plastic part, and the material of the flexible fitting block 1131 may be silicone rubber, rubber, etc., and it may be formed in a predetermined area of ​​the core housing 111 by injection molding. Furthermore, the flexible fitting block 1131 can at least partially cover the area corresponding to the free end FE of the core housing 111 such that at least a portion of the core module 11 abuts into the concha cavity via the flexible fitting block 1131. In other words, the portion of the core housing 111 that is inserted into and in contact with the concha cavity may be covered by the flexible fitting block 1131. Thus, when the core module 11 abuts against the concha of the ear, for example, when the core module 11 and the hook-shaped structure 12 are installed so as to sandwich the ear region corresponding to the concha of the ear from both the front and rear sides, the flexible fitting block 1131 provides a buffering effect between the core housing 111 and the ear (for example, the aforementioned ear region), relieving the pressure of the earphone 10 on the ear and contributing to improved comfort when the earphone 10 is worn.

[0044] For example, the flexible fitting block 1131 may continuously cover at least a portion of the areas corresponding to the rear side RS, upper side US, and lower side LS of the core housing 111. For instance, the area corresponding to the rear side RS of the core housing 111 may be covered by 90% or more of the flexible fitting block 1131, while the areas corresponding to the upper side US and lower side LS of the core housing 111 may each be covered by approximately 30% of the flexible fitting block 1131. In this way, the comfort of the earphone 10 when worn is achieved while also meeting the need to install structural components such as a speaker 112 inside the core housing 111.

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

[0046] In some embodiments, the portion of the flexible interlocking block 1131 corresponding to the lower side LS may abut against the antitragus. The thickness of the portion of the flexible interlocking block 1131 corresponding to the posterior side RS may be smaller than the thickness of the portions of the flexible interlocking block 1131 corresponding to the upper side US and lower side LS, thereby providing good comfort even when the core module 11 abuts against an uneven position within the concha.

[0047] Illustratively, as shown in Figures 7 and 8, the core housing 111 may include an inner core housing 1111 and an outer core housing 1112 that engage with each other along the thickness direction X, with the inner core housing 1111 being closer to the lugs than the outer core housing 1112 when installed. The parting surface 111b between the outer core housing 1112 and the inner core housing 1111 is inclined toward the side where the inner core housing 1111 is located in the direction approaching the free end FE, so that the flexible fitting block 1131 can be installed as much as possible in the region corresponding to the free end FE of the outer core housing 111. For example, as shown in Figure 11, the flexible fitting block 1131 is installed entirely in the region corresponding to the free end FE of the outer core housing 111, simplifying the structure of the core module 11 and reducing processing costs.

[0048] For example, as shown in Figures 7, 8, and 11, the core module 11 may include a flexible coating layer 1132, the hardness of which is less than that of the core housing 111. The core housing 111 may be a plastic part, and the material of the flexible coating layer 1132 may be silicone rubber, rubber, etc., and it may be formed in a predetermined area of ​​the core housing 111 by methods such as injection molding or adhesive bonding. Furthermore, the flexible coating layer 1132 may integrally cover at least a portion of the outer surface of the flexible fitting block 1131 and at least a portion of the outer surface of the outer core housing 1112 that is not covered by the flexible fitting block 1131, which is advantageous in improving the visual consistency of the core module 11. Of course, the flexible coating layer 1132 may further cover the outer surface of the inner core housing 1111. The hardness of the flexible interlocking block 1131 is less than that of the flexible coating layer 1132, so that it is sufficiently flexible. In addition, the flexible coating layer 1132 can improve the comfort of the earphone 10 when worn, and protects the flexible interlocking block 1131 with a certain structural strength. Furthermore, the outer surface area of ​​the flexible interlocking block 1131 is 126 mm². 2 ~189mm 2 This is also acceptable. If the aforementioned area is too small, it is likely to cause a deterioration in comfort when the core module 11 is worn. If the aforementioned area is too large, it is likely to cause the volume of the core module 11 to be too large, and the area in which the flexible fitting block 1131 does not contact the concha cavity will be too large, which will deviate from the original purpose of installing the flexible fitting block 1131. Furthermore, the thickness of the flexible covering layer 1132 is smaller than the thickness of the external core housing 1112.

[0049] Illustratively, as shown in Figures 11 and 9, the core module 11 may include metallic functional patterns such as an antenna pattern 1141 and / or a touch pattern 1142, which are installed between the external core housing 1112 and the flexible coating layer 1132. The antenna pattern 1141 may be formed on the outside of the external core housing 1112 by laser-direct-structuring (LDS), and the touch pattern 1142 may be formed on the outside of the external core housing 1112 by laser-direct-structuring, or it may be a flexible touch circuit board attached to the outside of the external core housing 1112. Furthermore, the external core housing 1112 is provided with plated through-holes connected to the antenna pattern 1141 and the touch pattern 1142, respectively. In this case, the main control circuit board 13 is installed inside the core housing 111, and for example, the main control circuit board 13 is connected to the external core housing 1112, so that the main control circuit board 13 can contact the inner wall of the corresponding plated through-hole via elastic metal members such as pogo-pins and metal domes, for example, the antenna pattern 1141 and the touch pattern 1142 are connected to pogo-pins 131 and 132 welded to the main control circuit board 13, respectively. Accordingly, the speaker 112 is located on the side of the main control circuit board 13 away from the external core housing 1112. Thus, compared to the arrangement where the antenna pattern 1141 and touch pattern 1142 are each placed on the inside of the external core housing 1112 facing the speaker 112, placing the antenna pattern 1141 on the outside of the external core housing 1112 increases the distance between it and the main control circuit board 13, i.e., increases the antenna clearance area, thereby improving the interference resistance of the antenna pattern 1141. Placing the touch pattern 1142 on the outside of the external core housing 1112 reduces the distance to an external signal trigger source (e.g., a user's finger), i.e., reduces the touch interval, thereby improving the sensitivity of the touch pattern 1142 to user-triggered signals.

[0050] In some embodiments, the antenna pattern 1141 may surround the outer periphery of the touch pattern 1142 so as to make full use of the space outside the external core housing 1112. The antenna pattern 1141 may be installed in a U-shape, and the touch pattern 1142 may be installed in a rectangular shape.

[0051] Furthermore, the core module 11 may include a microphone 133 welded to the main control circuit board 13, which can pick up user voice and ambient sound through sound-collecting holes installed in the external core housing 1112. When the main control circuit board 13 is connected to the external core housing 1112, the microphone 133 can be further pressed against the external core housing 1112.

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

[0053] Exemplary, as shown in Figures 7 and 11, the outer core housing 1112 may be provided with a fitting groove located at least partially in the second side wall 1116, and the flexible fitting block 1131 is fitted into the aforementioned fitting groove, so that the outer surface of the area of ​​the outer core housing 1112 not covered by the flexible fitting block 1131 and the outer surface of the flexible fitting block 1131 transition continuously. The area where the flexible fitting block 1131 is located in Figure 7 can be easily considered as the aforementioned fitting groove. In this way, it is advantageous not only to avoid the flexible fitting block 1131 accumulating on the outer core housing 1112 during the injection molding process and overflowing, but also to improve the appearance quality of the core module 11 and avoid depressions on the surface of the core module 11.

[0054] Furthermore, the second side wall 1116 may include a first sub-side wall portion 1117 and a second sub-side wall portion 1118 connected to the first sub-side wall portion 1117, wherein the first sub-side wall portion 1117 is closer to the top wall 1115 than the second sub-side wall portion 1118 in the thickness direction X, and the second sub-side wall portion 1118 protrudes further outward from the core housing 111 than the first sub-side wall portion 1117. In short, the second side wall 1116 may have a stepped structure. This is advantageous not only in preventing the flexible fitting block 1131 from accumulating on the outer core housing 1112 during the injection molding process and preventing the flexible fitting block 1131 from overflowing, but also in allowing the core module 11 to better contact the concha cavities via the flexible fitting block 1131, thereby improving comfort when wearing the earphone 10.

[0055] Furthermore, the main control circuit board 13 is connected to the external core housing 1112 and may be fixed, for example, to a hot melt column connected to the top wall 1115, and may partially overlap with the first sub-side wall portion 1117 in the thickness direction X, and the speaker 112 may partially overlap with the second sub-side wall portion 1118 in the thickness direction X. In this way, it is advantageous to install a sufficiently large speaker 112 inside the core housing 111, thereby increasing the volume of sound generated by the earphone 10.

[0056] For example, as shown in Figures 10 and 8, the core housing 111 may be provided with a pressure relief hole 111c, which connects the space on the side of the speaker 112 facing the main control circuit board 13 to the external environment, that is, allows air to freely enter and exit the aforementioned space. This is advantageous in reducing resistance during the vibration process of the speaker 112's diaphragm. The pressure relief hole 111c can be positioned towards the top of the head when worn, which is advantageous in preventing sound waves propagated through the pressure relief hole 111c from being heard as sound leakage (i.e., the second sound leakage described above). By making the diameter of the pressure relief hole 111c as large as possible based on the Helmholtz resonance cavity, the resonance frequency of the second sound leakage can be shifted to the highest possible frequency band (for example, a frequency range greater than 4 kHz), thus further advantageous in preventing the second sound leakage from being heard.

[0057] Furthermore, a sound-tuning hole 111d may be provided in the core housing 111. The sound-tuning hole 111d is advantageous in further avoiding the audibility of the second sound leakage by shifting the resonant frequency of the second sound leakage to the highest possible frequency band (for example, a frequency range greater than 4 kHz). The area of ​​the sound-tuning hole 111d may be smaller than the area of ​​the pressure-reducing hole 111c, thereby ensuring that the space on the side of the speaker 112 facing the main control circuit board 13 is in communication with the external environment as much as possible through the pressure-reducing hole 111c. Moreover, the distance in the width direction Z between the sound-emitting hole 111a and the pressure-reducing hole 111c is greater than the distance in the width direction Z between the sound-emitting hole 111a and the sound-tuning hole 111d, thereby avoiding the sound waves propagated through the sound-emitting hole 111a and the pressure-reducing hole 111c canceling each other out of phase in the near field, thus advantageous in improving the volume of the sound propagated through the sound-emitting hole 111a that the user hears. Accordingly, by positioning the sound-tuning hole 111d closer to the connection end CE than the sound-emitting hole 111a, and increasing the distance between them in the longitudinal direction Y, it is possible to avoid the sound waves propagated through the sound-emitting hole 111a and the sound-tuning hole 111d canceling each other out of phase in the near field, which is advantageous in increasing the volume of the sound propagated through the sound-emitting hole 111a that the user hears.

[0058] For example, as shown in Figure 10, the sound vents 111a, pressure relief holes 111c, and sound tuning holes 111d may be installed in the internal core housing 1111. For instance, the sound vent 111a may be installed in the bottom wall 1113, and the pressure relief holes 111c and sound tuning holes 111d may each be installed in the first side wall 1114. The pressure relief holes 111c and sound tuning holes 111d may each be installed on opposite sides of the first side wall 1114 in the width direction Z. In this way, since the sound vents 111a, pressure relief holes 111c, and sound tuning holes 111d are all installed in the internal core housing 1111, the structure of the external core housing 1112 becomes simpler, which is advantageous in reducing processing costs. In addition, since the pressure relief holes 111c and the sound tuning holes 111d are each installed on opposing sides along the width direction Z of the first side wall 1114, the parting surface 111b can be installed symmetrically with respect to a reference plane perpendicular to the width direction Z, which is advantageous for improving the appearance quality of the core module 11.

[0059] Exemplary, as shown in Figures 7 and 8, the core module 11 may include a bracket 115 installed within the core housing 111, and the bracket 115 and speaker 112 form a surrounding acoustic cavity 116, thereby separating the acoustic cavity 116 from other structures within the core housing 111 (e.g., the main control circuit board 13), which is advantageous in improving the acoustic expressiveness of the core module 11. Acoustic holes may be provided in the core housing 111, for example, at least one of a depressurization hole 111c and a sound tuning hole 111d, and an acoustic passage 1151 connecting the acoustic hole and the acoustic cavity 116 may be provided in the bracket 115, thereby allowing the acoustic cavity 116 to communicate with the external environment, i.e., air to freely enter and exit the acoustic cavity 116, which is advantageous in reducing resistance in the vibration process of the speaker 112's diaphragm.

[0060] Furthermore, the bracket 115 cooperates with the core housing 111 to form a first adhesive-retaining groove 1171 that surrounds at least a portion of the acoustic hole, and the first adhesive-retaining groove 1171 contains a first adhesive that seals the assembly gap between the bracket 115 and the core housing 111, that is, the first adhesive provides a waterproof seal, which is advantageous in preventing external droplets such as sweat and rainwater from entering the space in the core housing 111 where the main control circuit board 13 is located. Thus, compared to the related technology which uses a Helmholtz resonance cavity to waterproof seal a silicone rubber sleeve by pressing it against the core housing 111 via a bracket 115, the waterproof sealing method in this technology using the first adhesive eliminates the need for the aforementioned silicone rubber sleeve in the related technology, which is advantageous in shortening the length of the communication portion between the acoustic cavity 116 and the external environment (including the acoustic passage 1151 and acoustic holes). This shifts the resonance frequency of the sound leakage (i.e., the second sound leakage) that propagates through the depressurization hole 111c to the highest possible frequency band (for example, a frequency range greater than 4 kHz), further preventing the audibility of the second sound leakage.

[0061] Furthermore, if the acoustic hole is a depressurization hole 111c, the first adhesive storage groove 1171 surrounds at least a portion of the depressurization hole 111c; if the acoustic hole is a sound tuning hole 111d, the first adhesive storage groove 1171 surrounds at least a portion of the sound tuning hole 111d; and if the acoustic hole is both a depressurization hole 111c and a sound tuning hole 111d, the first adhesive storage groove 1171 surrounds at least a portion of both the depressurization hole 111c and the sound tuning hole 111d, respectively. For the sake of explanation, as shown in Figures 8, 10, and 12, the present invention will be illustrated by illustrating, as an example, that the acoustic hole is both a depressurization hole 111c and a sound tuning hole 111d, and that the first adhesive storage groove 1171 surrounds at least a portion of both the depressurization hole 111c and the sound tuning hole 111d, respectively. Furthermore, if the gap between the bracket 115 and the core housing 111 (for example, its bottom wall 1113) is sufficiently large, or if the bottom wall 1113 and the first side wall 1114 in the core housing 111 are not integrally molded structural members (i.e., they are two separate structural members), the first adhesive receiving groove 1171 may surround the entire acoustic hole, i.e., the first adhesive receiving groove 1171 is a complete annular structure.

[0062] Illustratively, as shown in Figures 12 and 10, the bracket 115 may include an annular body portion 1152 and a butt portion 1153 connected to the annular body portion 1152. The annular body portion 1152 is fitted around the outer circumference of the speaker 112 to form an acoustic cavity 116, and the acoustic passage 1151 penetrates the butt portion 1153 and the annular body portion 1152. Furthermore, the butt portion 1153 is located between the annular body portion 1152 and the core housing 111, surrounding at least a portion of the acoustic hole, and the butt portion 1153 cooperates with the core housing 111 to form a first adhesive receiving groove 1171. The acoustic hole may be a depressurization hole 111c and an acoustic tuning hole 111d, so that two butt portions 1153 and two first adhesive receiving grooves 1171 are provided accordingly. Accordingly, the abutting portion 1153 cooperates with the first side wall 1114 to form the first adhesive receiving groove 1171. In this way, the bracket 115 is installed in an annular shape, so that the side of the speaker 112 facing the main control circuit board 13 is exposed, which is advantageous in reducing the thickness of the core module 11 in the thickness direction X.

[0063] For example, as shown in Figures 10 and 8, a recessed area 1119 may be provided inside the core housing 111, the acoustic holes may be provided at the bottom of the recessed area 1119, the core module 11 may include an acoustic impedance mesh 118 provided within the recessed area 1119, and the abutting portion 1153 presses the acoustic impedance mesh 118 against the bottom of the recessed area 1119. This is advantageous not only in preventing the bracket 115 from getting caught on the acoustic impedance mesh 118 during the assembly process, but also in reducing the assembly gap between the bracket 115, the acoustic impedance mesh 118 and the internal core housing 1111, thereby preventing the acoustic impedance mesh 118 from shaking. The acoustic impedance mesh 118 may be pre-fixed to the bottom of the recessed area 1119 with double-sided tape or adhesive, or the acoustic impedance mesh 118 may be pre-fixed to a metal protective mesh, the aforementioned metal protective mesh is further pre-fixed to the bottom of the recessed area 1119 with double-sided tape or adhesive. Accordingly, the acoustic holes may be depressurization holes 111c and acoustic tuning holes 111d, so two recessed regions 1119 are provided accordingly, and two acoustic impedance meshes 118 are also provided accordingly.

[0064] Furthermore, the first adhesive may seal the assembly gap between the bracket 115 and the acoustic impedance mesh 118 and / or the assembly gap between the acoustic impedance mesh 118 and the core housing 111 (e.g., the side wall of the recessed area 1119), thus providing an additional waterproof seal.

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

[0066] For example, as shown in Figures 12 to 14, the speaker 112 may include a main body 1121 and an annular support base 1122 installed along the circumferential direction of the main body 1121, the lower end of the bracket 115 may be supported by the annular support base 1122, and the acoustic passage 1151 may be installed with the side facing the annular support base 1122 open, with the annular support base 1122 further closing the open portion of the acoustic passage 1151. In this case, the first adhesive-retaining groove 1171 can be easily considered to surround a portion of the acoustic hole, so that adhesive is subsequently filled into the first adhesive-retaining groove 1171 by, for example, an adhesive application process.

[0067] In some embodiments, the annular support base 1122 may include a first annular mesa 1123 and a second annular mesa 1124 arranged in a stepped manner, the second annular mesa 1124 circumferentially surrounding the outer circumference of the first annular mesa 1123, and the lower end of the bracket 115 may be partially supported by the first annular mesa 1123 and the other part forming a gap region between it and the second annular mesa 1124, so that the bracket 115, the annular support base 1122 and the core housing 111 cooperate to form a second adhesive storage groove 1172, the second adhesive storage groove 1172 containing a second adhesive that seals the assembly gap between any two of the bracket 115, the annular support base 1122 and the core housing 111, thereby providing a corresponding waterproof seal.

[0068] In some embodiments, the upper end of the bracket 115 may be hooked onto the body 1121 and cooperate with the body 1121 to form a third adhesive storage groove 1173, which contains a third adhesive that seals the assembly gap between the bracket 115 and the body 1121, thereby providing a corresponding waterproof seal.

[0069] The specific assembly process of the core module 11 may include the following process steps, and the order of all process steps can be adjusted as needed: Step 1) The acoustic impedance mesh 118 is pre-fixed to the bottom of the recessed area 1119 with double-sided tape; Step 2) The speaker 112 is fixed to the bottom wall 1113, adhesive is applied to the assembly gap between the two, and the corresponding adhesive is deposited on the second annular mesa 1124 of the speaker 112; Step 3) Before the adhesive in Step 2) hardens, the bracket 115 is fixed to the speaker 112, and the lower end of the bracket 115 is fixed to the speaker By being supported by the first annular mesa 1123 of 112, the gap between the lower end of the bracket 115 and the second annular mesa 1124 is also filled with adhesive, the abutting portion 1153 of the bracket 115 presses against the acoustic impedance mesh 118 and cooperates with the first side wall 1114 to form the first adhesive-retaining groove 1171, the upper end of the bracket 115 is placed on the main body 1121 and cooperates with the main body 1121 to form the third adhesive-retaining groove 1173, and in step 4) adhesive is applied to the first adhesive-retaining groove 1171, the third adhesive-retaining groove 1173 and the assembly gap between the lower end of the bracket 115 and the speaker 112 and the internal core housing 1111. Since the assembly gap between the lower end of the bracket 115 and the speaker 112 and internal core housing 1111 is very close to the first adhesive storage groove 1171, the assembly gap between the lower end of the bracket 115 and the speaker 112 and internal core housing 1111 can be easily considered to be a continuation of the first adhesive storage groove 1171, that is, the first adhesive storage groove 1171 and the second adhesive storage groove 1172 can communicate with each other.

[0070] For example, as shown in Figures 15 to 18 and Figure 7, the hook-shaped structure 12 may include an adapter housing 122 connected to the core module 11, and the adapter housing 122 may have a housing cavity 124 pre-formed therein, and the earphone 10 may include electronic components 15 subsequently mounted in the housing cavity 124. The connection method between the adapter housing 122 and the core module 11 may be one of the assembly methods such as locking, welding, adhesive connection, screw connection, and bolt connection, or a combination thereof. In this way, compared to the installation of electronic components 15 within the core module 11 in related technologies, this technical means is advantageous not only in saving space in the core module 11 and making the structure more compact and smaller by mounting the electronic components 15 in a predetermined housing cavity 124 of the hook-shaped structure 12, but also in simplifying the structure of the core module 11 and increasing its assembly efficiency, and is advantageous in rationally laying out the relative positions of each structural member in the earphone 10, and both the core module 11 and the hook-shaped structure 12 can be fully utilized.

[0071] Furthermore, the fact that the adapter housing 122 has a housing cavity 124 pre-formed may mean that the housing cavity 124 is not formed by processing after the adapter housing 122 is molded, but is formed simultaneously during the molding of the adapter housing 122. For example, the adapter housing 122 is a plastic housing, and the corresponding housing cavity 124 can be obtained after injection molding the plastic housing by installing a corresponding core. Accordingly, the fact that the electronic component 15 is subsequently mounted in the housing cavity 124 may mean that the electronic component 15 and the adapter housing 122 are structural members that are not integrally molded. For example, the adapter housing 122 is a plastic housing, and the electronic component 15 is not integrally injection molded into the plastic housing by insert molding. Based on this, the explanation of the adapter housing 122 mentioned below having through holes 1251, blind holes 1252, and through holes 1253 pre-formed is similar or equivalent, and therefore will be omitted here. Of course, the housing cavity 124 may also be obtained by a drilling process after the adapter housing 122 has been formed, and similarly, the through holes 1251, blind holes 1252, and through holes 1253 may also be obtained by a drilling process after the adapter housing 122 has been formed.

[0072] For example, as shown in Figure 7, the electronic component 15 can be coupled to the main control circuit board 13 to realize an electrical connection between the hook-shaped structure 12 and the core module 11, and the adapter housing 122 can be inserted and fixed to the core housing 111, thereby realizing a structural connection between the hook-shaped structure 12 and the core module 11, which is simple and reliable. The aforementioned insertion and fixing may also be such that one of the adapter housing 122 and the core housing 111 is first partially inserted into the other along the assembly direction, and then inserted and fixed by another position-restricting structure such as a plug, and the assembly direction of the aforementioned position-restricting structure is not parallel to the aforementioned assembly direction, and the aforementioned insertion and fixing may be such that one of the adapter housing 122 and the core housing 111 can be inserted and fixed without the aforementioned position-restricting structure once one of the adapter housing 122 and the core housing 111 is partially inserted into the other.

[0073] For example, as shown in Figures 7, 10, and 16, the adapter housing 122 may be fitted with a first buckle structure 1221, and the core housing 111 may be fitted with a second buckle structure 1222. The adapter housing 122 and the core housing 111 are locked together by the first buckle structure 1221 being inserted into the core housing 111 and locking together with the second buckle structure 1222. The two are directly inserted and fixed together without the need for other position-restricting structures, making the arrangement simple and reliable. The first buckle structure 1221 may be fitted integrally with the adapter housing 122, or two may be fitted opposite each other and spaced apart in the thickness direction X. The second buckle structure 1222 may be fitted integrally with the internal core housing 1111, or fitted in a one-to-one ratio with the first buckle structure 1221.

[0074] Exemplary, as shown in Figure 7, the earphone 10 may include a flexible circuit board 16, which is at least partially housed within a housing cavity 124 and connected to an electronic component 15, extending into a core housing 111, thereby connecting the electronic component 15 to a main control circuit board 13 via the flexible circuit board 16. For example, the electronic component 15 is welded to one end of the flexible circuit board 16 by surface mounted technology (SMT), and the other end of the circuit board of the flexible circuit board 16 is engaged with the main control circuit board 13 by a BTB connector. The speaker 112 may be installed so as to be connected to the flexible circuit board 16 along its extension path. For example, the speaker 112's leads may be welded to the corresponding area of ​​the flexible circuit board 16, thereby connecting the speaker 112 to the main control circuit board 13 via the flexible circuit board 16. The speaker 112's leads do not need to be extended to connect to the main control circuit board 13, thus simplifying the wiring structure of the earphone 10 and reducing production costs.

[0075] For example, as shown in Figures 16 and 15, the adapter housing 122 may have a through hole 1251 pre-formed therein that communicates with the housing cavity 124, and the electronic component 15 may include an electrode terminal 151 that is at least partially installed in the through hole 1251, and the electrode terminal 151 may be an expandable elastic member such as a pogo-pin, or an immobile rigid member such as a metal column. The diameter of the through hole 1251 may be larger than the outer diameter of the electrode terminal 151 in order to subsequently mount the electrode terminal 151. Of course, the electrode terminal 151 may be integrally molded into the adapter housing 122 by an insert method. Furthermore, the electrode terminal 151 can be made invisible when worn, facing the ear, which is advantageous in improving the appearance quality of the earphone 10 when worn.

[0076] Furthermore, if the electrode terminal 151 is installed as an expandable and retractable elastic member such as a pogo-PIN, the direction of extension of the electrode terminal 151 may be the direction of its expansion and contraction. If the electrode terminal 151 is installed as a non-expandable and rigid member such as a metal column, the direction of extension of the electrode terminal 151 may be the direction in which its axis is located.

[0077] Furthermore, multiple electrode terminals 151 may be installed depending on the actual usage needs, for example, for charging, detection, etc.

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

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

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

[0081] In some embodiments, when viewed from the extending direction of the electrode terminal 151, the charging positive terminal 1511, the charging negative terminal 1512, and the detection terminal 1513 may be spaced apart from each other and arranged in a line segment, for example, a straight line. The distance between the charging positive terminal 1511 and the charging negative terminal 1512 may be greater than the distance between the charging negative terminal 1512 and the detection terminal 1513. For example, the charging negative terminal 1512 is located between the charging positive terminal 1511 and the detection terminal 1513, and the distance between the charging positive terminal 1511 and the charging negative terminal 1512 is greater than the distance between the charging negative terminal 1512 and the detection terminal 1513, and for example, the detection terminal 1513 is located between the charging positive terminal 1511 and the charging negative terminal 1512. Thus, when the space available for installing the electrode terminals 151 in the adapter housing 122 is limited, increasing the distance between the charging positive terminal 1511 and the charging negative terminal 1512 as much as possible is advantageous in avoiding a short circuit between them.

[0082] For example, as shown in Figure 15, a boss 126 may be provided on the outside of the adapter housing 122, and the through hole 1251 further penetrates the boss 126, exposing multiple electrode terminals 151 to the boss 126. In this way, the boss 126 gives the adapter housing 122 a certain arc, making the non-flat parts flat and facilitating the installation of the electrode terminals 151. The charging positive electrode terminal 1511, the charging negative electrode terminal 1512, and the detection terminal 1513 may be installed sequentially at intervals along the longitudinal direction of the boss 126.

[0083] For example, as shown in Figures 15 to 17, the hook-shaped structure 12 may include a magnet 127, and the magnet 127 and the electrode terminal 151 may be exposed on the same side of the adapter housing 122, that is, both can be seen on the same side surface of the adapter housing 122, so that the magnet 127 is closer to the outside toward the exposed end of the electrode terminal 151, thereby reducing the distance between the magnet 127 and the magnetic attraction structure that cooperates with the magnet 127 in a charging device such as a charging box, or the distance between the magnet 127 and the Hall sensor that cooperates with the magnet 127, thus being advantageous for improving the reliability of functions such as charging and detection. The magnet 127 and the electrode terminal 151 may be installed adjacent to each other, thereby allowing the magnet 127 to cooperate with the magnetic attraction structure in a charging device such as a charging box, and allowing the electrode terminal 151 to cooperate with the electrode terminal in the charging device, thereby facilitating charging. Accordingly, the boss 126 may protrude from the adapter housing 122 around the magnet 127 so that the electrode terminal 151 contacts the electrode terminal in a charging device such as a charging box, meaning the magnet 127 may be lower than the boss 126. Of course, in embodiments in which the magnet 127 is used for detection in cooperation with a Hall sensor in a charging device such as a charging box, the magnet 127 may be installed adjacent to the electrode terminal 151, and the electrode terminal that cooperates with the electrode terminal 151 in the charging device such as a charging box may be installed adjacent to the Hall sensor, which is advantageous in reducing the area required to mount the electrode terminal and the Hall sensor in the charging device such as a charging box.

[0084] Furthermore, the hook-shaped structure 12 may include a flexible coating layer 128, the hardness of which is less than that of the adapter housing 122. The adapter housing 122 may be a plastic part, and the material of the flexible coating layer 128 may be silicone rubber, rubber, etc., and it may be formed on the adapter housing 122 by methods such as injection molding or adhesive bonding. Furthermore, the flexible coating layer 128 may cover the adapter housing 122 and the magnet 127 such that the magnet 127 is not exposed and the electrode terminals 151 are exposed, that is, the magnet 127 is not visible and the electrode terminals 151 are visible. In this way, the usage needs of the electrode terminals 151 can be met, and the magnet 127 can be shielded, avoiding wear and impact on appearance quality due to its exposure. In addition, the flexible coating layer 128 is also advantageous in improving the comfort of the earphone 10 when worn. The thickness of the flexible coating layer 128 is less than the thickness of the adapter housing 122.

[0085] For example, as shown in Figure 16, in order to improve the waterproof and dustproof performance of the housing cavity 124, a blind hole 1252 that does not communicate with the housing cavity 124 may be pre-formed in the adapter housing 122. The magnet 127 may be installed at least within the blind hole 1252 and exposed through the open end of the blind hole 1252. This is advantageous not only for reducing the thickness of the adapter housing 122 in the area where the magnet 127 is located, but also for improving the appearance quality of the earphone 10 in the area where the magnet 127 is located. Of course, the blind hole 1252 may also be installed as a through hole.

[0086] For example, as shown in Figure 15, when viewed from the direction of extension of the electrode terminals 151, multiple electrode terminals 151 may be arranged in a line segment, such as a straight line or a broken line, with spaces between them. The magnet 127 may be located on any one side of the aforementioned line segment, or the magnet 127 may intersect the aforementioned line segment and at least a portion of it may be located between any two adjacent electrode terminals 151. For example, there may be one magnet 127, which as a whole is located on one side of the aforementioned line segment, or it may intersect the aforementioned line segment and as a whole is located between any two adjacent electrode terminals 151. Alternatively, for example, there may be two magnets 127, which as a whole is located on one side of the aforementioned line segment, and the other magnet 127 as a whole is located on the other side of the aforementioned line segment. Furthermore, for example, there is one magnet 127, and part of the magnet 127 intersects the aforementioned line segment and is located between any two adjacent electrode terminals 151, while the other part is located below the electrode terminals 151 in the aforementioned extending direction.

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

[0088] For example, as shown in Figures 16 to 18, the electronic component 15 may include an electrode terminal 151 and a microphone 152, and the adapter housing 122 may have a housing cavity 124 and through holes 1251 and 1253 that communicate with the housing cavity 124 pre-formed therein. Because the electrode terminal 151 and the microphone 152 have different functions, the through holes 1251 and 1253 may be located on different side walls of the adapter housing 122. Based on this, at least a portion of the electrode terminal 151 is installed in the through hole 1251, and the microphone 152 is installed in the housing cavity 124 and can pick up sounds from outside the earphone 10 (e.g., user voice, ambient sound) through the through hole 1253. In this way, by rationally arranging the relative positions of the electrode terminal 151 and the microphone 152, the space of the housing cavity 124 can be fully utilized, and the structure of the earphone 10 can be made more compact and smaller. Furthermore, the earphone 10 may include a support assembly 17, at least a portion of which is installed within the housing cavity 124, and the support assembly 17 can support and fix the electrode terminals 151 and the microphone 152 to the side walls corresponding to the through holes 1251 and 1253, respectively. This is advantageous not only in avoiding separation of the electrode terminals 151 and the microphone 152 from the adapter housing 122, but also in improving the waterproof and dustproof performance of the electronic components 15, and is simple in structure and highly reliable.

[0089] Exemplary, as shown in Figure 18, the flexible circuit board 16 may include a first circuit board portion 161, a second circuit board portion 162, and a third circuit board portion 163, with the electrode terminals 151 welded to the first circuit board portion 161, the second circuit board portion 162 bent relative to the first circuit board portion 161, and the microphone 152 welded to the third circuit board portion 163 and bent relative to the second circuit board portion 162. In other words, after the flexible circuit board 16 has been bent twice, the first circuit board portion 161, the second circuit board portion 162, and the third circuit board portion 163 can correspond to three pairs of adjacent faces in a hexahedron structure. One end of the second circuit board portion 162, away from the third circuit board portion 163, is connected to the first circuit board portion 161, while the other end is not connected to the first circuit board portion 161. In this way, after the flexible circuit board 16 and the electrode terminals 151 and microphone 152 on it are assembled inside the adapter housing 122, the worker first presses one end of the second circuit board portion 162 that is connected to the first circuit board portion 161 to make it as flush as possible with the first circuit board portion 161, thereby avoiding the support assembly 17 that will be assembled next.

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

[0091] In some embodiments, at least the portion of the adapter housing 122 corresponding to the housing cavity 124 is a complete housing structure. At least the first support member of the support assembly 17, which supports the electrode terminals 151 and the second support member which supports the microphone 152, may be independent of the adapter housing 122 to facilitate the assembly of at least the electrode terminals 151.

[0092] For example, as shown in Figure 18, the support assembly 17 may be inserted into the housing cavity 124 independently of the adapter housing 122. In this way, the support assembly 17, electrode terminals 151, and microphone 152 can be assembled independently of the adapter housing 122 in a specific order, which is advantageous in avoiding unnecessary structural interference and resulting in higher assembly efficiency.

[0093] In some embodiments, the first support member supporting the electrode terminals 151 and the second support member supporting the microphone 152 in the support assembly 17 may be independent of the adapter housing 122, that is, the first support member and the second support member may be independent of each other in supporting (or pressing) the electrode terminals 151 and the microphone 152, respectively. In this way, the first support member and the second support member in the support assembly 17 can be differentiated in design according to actual needs.

[0094] In some embodiments, the support assembly 17 may be a single-piece molded structural member, i.e., the first support member supporting the electrode terminals 151 and the second support member supporting the microphone 152 in the support assembly 17 are connected to each other, which is advantageous not only for simplifying the structure of the support assembly 17 but also for avoiding the first and second support members being too small to be easily assembled. The support assembly 17 can be securely fixed to the cavity wall of the housing cavity 124 after being inserted into a predetermined position, i.e., it has a certain resistance during the process of inserting or removing the support assembly 17, and is simple in structure and highly reliable. Accordingly, the cavity wall of the housing cavity 124 may be provided with guide grooves and position limiting grooves that cooperate with the support assembly 17. Of course, the support assembly 17 may also be bonded to the cavity wall of the housing cavity 124 by an adhesive application process.

[0095] Exemplary, as shown in Figures 17 and 18, the support assembly 17 may be inserted into the space between the electrode terminals 151 and the microphone 152, so that at least a portion of the support assembly 17 and the housing cavity 124 may be positioned such that the dimensions in at least one reference direction perpendicular to the insertion direction of the support assembly 17 into the housing cavity 124 (e.g., the direction indicated by the arrows in Figures 17 and 18) gradually decrease along the aforementioned insertion direction. In other words, the dimensions of at least a portion of the support assembly 17 in at least one reference direction perpendicular to the aforementioned insertion direction may be positioned such that gradually decreases along the aforementioned insertion direction, and the dimensions of at least a portion of the housing cavity 124 in the same reference direction may be positioned such that gradually decreases along the aforementioned insertion direction, and the trends of change of both are the same or similar, which is advantageous for the support assembly 17 to be firmly fixed to the cavity wall of the housing cavity 124 after it has been inserted into place.

[0096] For example, as shown in Figures 16 to 18, the cavity walls of the housing cavity 124 may include a first cavity wall 1241 and a second cavity wall 1242 installed side by side and spaced apart from each other, and a third cavity wall 1243 connecting the first cavity wall 1241 and the second cavity wall 1242. The through hole 1251 may be located in the first cavity wall 1241, and the through hole 1253 may be located in the third cavity wall 1243. Accordingly, the support assembly 17 may include a bottom plate 171 and a first side plate 172 connected to the bottom plate 171, and may exhibit, for example, an L-shaped structure. One main surface of the bottom plate 171 may be positioned facing the first cavity wall 1241 to support the electrode terminals 151, and one main surface of the first side plate 172 may be positioned facing the third cavity wall 1243 to support the microphone 152. In this way, after the electrode terminals 151 and microphone 152 are assembled in their predetermined positions, the support assembly 17 is inserted into the housing cavity 124 along the insertion direction, and after being inserted into its predetermined position, it can support the electrode terminals 151 and microphone 152 via the bottom plate 171 and the first side plate 172, respectively.

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

[0098] In some embodiments, the dimensions of at least a portion of the base plate 171 and the housing cavity 124 in a first reference direction RD1 perpendicular to the insertion direction and parallel to one main surface of the base plate 171 may be set to gradually decrease along the insertion direction, that is, one of the front and rear ends of the base plate 171 or the portion between the front and rear ends in the insertion direction may be set to maintain a constant dimension in the first reference direction RD1 along the insertion direction. The dimensions of the first side plate 172 and the housing cavity 124 in a second reference direction RD2 perpendicular to the insertion direction and parallel to one main surface of the first side plate 172 may be set to maintain a constant dimension along the insertion direction.

[0099] In some embodiments, the dimensions of at least a portion of the first side plate 172 and the housing cavity 124 in a second reference direction RD2 perpendicular to the insertion direction and parallel to one main surface of the first side plate 172 may be set to gradually decrease along the insertion direction, that is, one of the front and rear ends of the first side plate 172 or the portion between the front and rear ends in the insertion direction may be set to maintain a constant dimension in the second reference direction RD2 along the insertion direction. The dimensions of the bottom plate 171 and the housing cavity 124 in a first reference direction RD1 perpendicular to the insertion direction and parallel to one main surface of the bottom plate 171 may be set to maintain a constant dimension along the insertion direction.

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

[0101] Furthermore, with respect to the support assembly 17, the dimension of the base plate 171 in the first reference direction RD1 can be easily 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 be easily considered as the height of the first side plate 172.

[0102] Exemplary, as shown in Figures 16 to 18, the support assembly 17 may include a second side plate 173 connected to the base plate 171, the second side plate 173 and the first side plate 172 being spaced apart on the same side of the base plate 171, the second side plate 173 abutting against the second cavity wall 1242 and providing support force to the base plate 171 toward the electrode terminals 151, thus advantageous in improving the support effect of the support assembly 17 toward the electrode terminals 151. In embodiments in which the electrode terminals 151 include a charging positive terminal 1511 and a charging negative terminal 1512 spaced apart from each other along a direction perpendicular to the insertion direction, the second side plate 173 may be positioned between the charging positive terminal 1511 and the charging negative terminal 1512 so that each part of the electrode terminals 151 receives force uniformly, thus advantageous in further improving the support effect of the support assembly 17 toward the electrode terminals 151.

[0103] For example, as shown in Figures 16 to 18, the cavity walls of the housing cavity 124 may include a fourth cavity wall 1244 that connects the first cavity wall 1241 and the second cavity wall 1242 and faces the third cavity wall 1243. The first cavity wall 1241 and the second cavity wall 1242 may be generally installed as a planar structure parallel to each other, while the third cavity wall 1243 and the fourth cavity wall 1244 may be generally installed as an arc-shaped structure that extends outward from each other in order to maximize the volume of the housing cavity 124 when the volume of the adapter housing 122 is limited. Accordingly, the support assembly 17 may include a third side plate 174 connected to the bottom plate 171, with the first side plate 172 and the third side plate 174 located on both side edges of the bottom plate 171 in a direction perpendicular to the insertion direction, and the second side plate 173 located between the first side plate 172 and the third side plate 174. The third side plate 174 abuts against the fourth cavity wall 1244, providing a supporting force toward the microphone 152 to the first side plate 172, thus improving the support effect of the support assembly 17 toward the microphone 152.

[0104] Furthermore, with respect to the bottom plate 171, the height of the second side plate 173 may be greater than the heights of the first side plate 172 and the third side plate 174, respectively, so that the second side plate 173 abuts against the second cavity wall 1242 and the third side plate 174 abuts against the fourth cavity wall 1244. Since the second side plate 173 and the third side plate 174 do not directly contact either the electrode terminals 151 or the microphone 152, they can guide the support assembly 17 during the process of insertion into the housing cavity 124. Accordingly, since the height of the second side plate 173 is relatively the highest, the support assembly 17 may include reinforcing ribs 175 connecting the second side plate 173 and the bottom plate 171. The reinforcing ribs 175 may be installed on both opposing sides of the second side plate 173 facing the first side plate 172 and the third side plate 174.

[0105] For example, as shown in Figures 15-17 and Figure 9, the hook-shaped structure 12 may include an elastic wire 121, an adapter housing 122, a battery housing 123, and a conductor 129, the ends of which the elastic wire 121 and the conductor 129 may be connected to the adapter housing 122 and the battery housing 123, respectively, so that the conductor 129 extends along the elastic wire 121 and is wired inside the adapter housing 122 and the battery housing 123. Of course, the conductor 129 may also be wired in a predetermined wiring passage after the elastic wire 121 is connected to the adapter housing 122 and the battery housing 123. The battery 14 may be installed inside the battery housing 123 and connected to the flexible circuit board 16 via the conductor 129, so that the battery 14 is also connected to the main control circuit board 13 via the flexible circuit board 16, thus simplifying the wiring structure of the earphone 10 and reducing production costs. In other words, components such as the electrode terminals 151, microphone 152, and battery 14 in the hook-shaped structure 12 may be connected to the main control circuit board 13 via the flexible circuit board 16.

[0106] Furthermore, the flexible coating layer 128 can further cover at least the elastic wire 121, the exposed portion of the conductor 129, and at least a portion of the battery 123 so that the conductor 129 is exposed, thus which is advantageous in improving the appearance quality of the earphone 10.

[0107] The adapter housing 122 may also be part of the core housing 111. For example, the adapter housing 122 may be integrally molded with the internal core housing 1111, or a portion of the adapter housing 122 may be integrally molded with the internal core housing 1111 and the remaining portion may be integrally molded with the external core housing 1112. Other parts of the hook-shaped structure 12 other than the adapter housing 122, such as one end of the elastic wire 121 away from the battery housing 123, and the battery housing 123, for example, are fixedly connected to the core module 11 having the adapter housing 122, for example, by insertion and fixing. Accordingly, structural members such as the electrode terminals 151, microphone 152, and magnet 127 are also adjusted in position, but their description is omitted here.

[0108] Based on the above related description, the present invention provides a housing assembly which may include a plastic housing, a metal functional pattern, and a silicone rubber coating layer, wherein the metal functional pattern is installed on the outside of the plastic housing, and the silicone rubber coating layer can cover the side of the metal functional pattern away from the plastic housing and the plastic housing not covered by the metal functional pattern by means of integral injection molding, adhesive bonding, etc. Thus, compared to installing the metal functional pattern on the inside of the plastic housing away from the silicone rubber coating layer, installing the metal functional pattern on the outside of the plastic housing facing the silicone rubber coating layer moves it away from interference from other electronic components in the housing assembly or closer to signal trigger sources outside the housing assembly, thereby improving the interference resistance and sensitivity of the metal functional pattern. The structure of the plastic housing may be the same as or similar to the structure of the core housing 111 or its external core housing 1112, and the structure of the silicone rubber coating layer may be the same as or similar to the flexible coating layer 1132, which are not described here.

[0109] In some embodiments, the metallic functional pattern may be installed as an antenna pattern 1141 or a touch pattern 1142. Installing the antenna pattern 1141 on the outside of the plastic housing can increase the distance from other electronic components within the plastic housing, i.e., increase the antenna clearance area, thereby improving the interference immunity of the antenna pattern 1141. Installing the touch pattern 1142 on the outside of the plastic housing can reduce the distance from an external signal trigger source (e.g., a user's finger), i.e., reduce the touch interval, thereby improving the user-triggered sensitivity of the touch pattern 1142.

[0110] In some embodiments, the metallic functional pattern may include an antenna pattern 1141 and a touch pattern 1142, and the antenna pattern 1141 may surround the outer periphery of the touch pattern 1142 so as to make full use of the space outside the plastic housing. The antenna pattern 1141 may be installed in a U-shape, and the touch pattern 1142 may be installed in a rectangular shape.

[0111] In some embodiments, the thickness of the silicone rubber coating layer may be less than the thickness of the plastic housing, thereby allowing the silicone rubber coating layer to shield and protect the metal functional pattern, further improving the interference resistance and sensitivity of the metal functional pattern, and reducing the volume of the housing assembly.

[0112] Exemplary, the housing assembly may be a core housing that accommodates the speaker 112. The relative positional relationship between the plastic housing and the silicone rubber coating layer may be the same as or similar to the relative positional relationship between the core housing 111 and the flexible coating layer 1132, and this will not be explained here.

[0113] Furthermore, the housing assembly may be applied to other electronic devices besides the earphones 10, such as smart glasses. The electronic device may include a core module on which the speaker 112 is installed, a main control circuit board 13, and the speaker 112 and battery 14 coupled to the main control circuit board 13, respectively. The housing assembly may house at least one of the electronic components such as the speaker 112, the main control circuit board 13, and the battery 14, and may support the speaker 112 in the electronic device so that it is positioned in the corresponding mounting position. Regarding electronic devices such as earphones and smart glasses based on the bone conduction principle, the speaker 112 can be adaptively adjusted to be a bone conduction speaker, and the basic structure of a bone conduction speaker is well known to those skilled in the art, so a description is omitted here.

[0114] This invention provides a housing assembly which may include a first housing, electrode terminals 151, a magnet 127, and a flexible coating layer 128, wherein the electrode terminals 151 and the magnet 127 are exposed on the same side of the first housing, the hardness of the flexible coating layer 128 is less than that of the first housing, and it covers the first housing and the magnet 127, thereby preventing the magnet 127 from being exposed and exposing the electrode terminals 151. In this way, compared to the case where the magnet 127 is installed inside the first housing, this technical means brings the magnet 127 closer to the outside toward the exposed end of the electrode terminal 151, thereby shortening the distance between the magnet 127 and a magnetic attraction structure cooperating with the magnet 127 in a charging device such as a charging box, or between the magnet 127 and a Hall sensor cooperating with the magnet 127, thus improving the reliability of functions such as charging and detection. Therefore, the housing assembly may be applied to a power receiving device such as earphones 10 or smart glasses, or to a charging device such as a charging box. In other words, the electronic device may be a power receiving device or a charging device. For the sake of explanation, the first housing may be an adapter housing 122.

[0115] In some embodiments, the first housing may be provided with through holes 1251 and blind holes 1252, the electrode terminals 151 may be at least partially installed in the through holes 1251, and the magnets 127 may be at least partially installed in the blind holes 1252 and exposed through the open ends of the blind holes 1252. This is advantageous not only for reducing the thickness of the area of ​​the first housing where the magnets 127 are located, but also for improving the appearance quality of the area of ​​the first housing where the magnets 127 are located. Of course, the blind holes 1252 may be provided as through holes.

[0116] In some embodiments, a boss 126 may be installed on the outside of the first housing, adjacent to the magnet 127, protruding from the first housing around the magnet 127, with a through hole 1251 further penetrating the boss 126, exposing a plurality of electrode terminals 151 to the boss 126. In this way, the boss 126 gives the first housing a certain arc, making the non-flat parts flat and facilitating the installation of the electrode terminals 151. The boss 126 may be installed in an elongated shape, resulting in a simple and reliable structure.

[0117] In some embodiments, the housing assembly may include a flexible circuit board 16, and to simplify the wiring of the electrode terminals 151, the electrode terminals 151 are connected to the flexible circuit board 16. The first housing may have a housing cavity 124, and at least a portion of the flexible circuit board 16 may be installed in the housing cavity 124, with through holes 1251 communicating with the housing cavity 124 and blind holes 1252 not communicating with the housing cavity 124, thereby improving the waterproof and dustproof performance of the first housing.

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

[0119] In some embodiments, the housing assembly may include a third housing used for the earphone 10 and housing a speaker 112, the third housing being inserted into and fixed to the first housing. For convenience of explanation, the third housing may be a core housing 111.

[0120] The present invention provides a housing assembly which may include a first housing, electrode terminals 151, a microphone 152, and a support assembly 17. The first housing may be provided with a housing cavity 124 and through holes 1251 and 1253 communicating with the housing cavity 124, the through holes 1251 and 1253 located on different side walls of the first housing, the electrode terminals 151 being at least partially installed in the through hole 1251, and the microphone 152 being installed in the housing cavity 124 and picking up sound from outside the housing assembly through the through hole 1253. Furthermore, the support assembly 17 is installed in the housing cavity 124 and can support and fix the electrode terminals 151 and the microphone 152 to the side walls corresponding to the through holes 1251 and 1253, respectively. Thus, this is advantageous not only in avoiding separation of the electrode terminals 151 and microphone 152 from the first housing, but also in improving the waterproof and dustproof performance of the electrode terminals 151 and microphone 152, and the structure is simple and highly reliable. For the sake of explanation, the first housing may be an adapter housing 122, a core housing 111, or a housing structure in which the core housing 111 and the adapter housing 122 are integrally molded.

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

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

[0123] In some embodiments, the housing assembly may include a third housing used for the earphone 10 and housing a speaker 112, the third housing being inserted into and fixed to the first housing. The first housing may be an adapter housing 122, and the third housing may be a core housing 111.

[0124] Furthermore, the housing assembly may be applied to other electronic devices besides the earphones 10, such as smart glasses. The electronic device may include a main control circuit board 13, a speaker 112 coupled to the main control circuit board 13, and a battery 14, and the housing assembly may house at least one of the electronic components such as the speaker 112, the main control circuit board 13, and the battery 14, and may support the speaker 112 in the electronic device so that it is positioned in the corresponding mounting position. Regarding electronic devices such as earphones and smart glasses based on the bone conduction principle, the speaker 112 can be adaptively adjusted to be a bone conduction speaker, and the basic structure of a bone conduction speaker is well known to those skilled in the art, so a description is omitted here.

[0125] For example, as shown in Figures 19 and 20, the earphone 10 may include a core module 11 and a hook-shaped structure 12 connected to the core module 11. The hook-shaped structure 12 may be a curved or hook-shaped structure, or a rod-shaped structure not parallel to the extending direction of the core module 11, and the rod-shaped structure can work in cooperation with the core module 11 to perform a "hook-like" action, that is, to attach the earphone to a person's ear. Accordingly, the charging box 20 may include a lower housing assembly 21, which may have two grooves 211 for accommodating the earphone 10, and each groove 211 may include a first groove area 2111 corresponding to the core module 11 and a second groove area 2112 corresponding to the hook-shaped structure 12, with the second groove areas 2112 of the two grooves 211 intersecting each other. Thus, when the earphones 10 are housed in the two grooves 211, the hook-shaped structures 12 of the two earphones 10 overlap each other, for example, by stacking them vertically. This reduces the volume of the charging box 20, making it smaller and easier for the user to carry. Note that overlapping each other means that there is at least an overlapping area between them, and includes partial and complete overlap.

[0126] In some embodiments, as shown in Figure 19, the projections of the first groove region 2111 and the second groove region 2112 onto the first reference direction overlap. Also, the projections of the first groove region 2111 and the second groove region 2112 onto the second reference direction overlap. The first reference direction is perpendicular to the second reference direction. Thus, when the earphone 10 is placed in the corresponding groove 211, the projected length of the charging box 20 in the first reference direction occupied by the second groove region 2112 and the projected length of the charging box 20 in the first reference direction occupied by the first groove region 2111 overlap, and the projected length of the charging box 20 in the second reference direction occupied by the second groove region 2112 and the projected length of the charging box 20 in the second reference direction occupied by the first groove region 2111 can overlap, thereby reducing the volume of the charging box 20 and making it easier for the user to carry. The amount of reduction in the volume of the charging box 20 is related to the degree of overlap between the projected length in the first reference direction and the projection in the second reference direction. In other words, when the earphone 10 is placed in the groove 211, the projections of the core module 11 and the hook-shaped structure 12 of the earphone 10 in the first reference direction overlap, and the projections of the core module 11 and the hook-shaped structure 12 in the second reference direction overlap. The first and second reference directions are mutually orthogonal directions that are perpendicular to the thickness direction of the charging box 20. In this application, the first reference direction has multiple different embodiments, and different embodiments of the first reference direction will be described illustratively below. The following embodiments of the first reference direction are at least one of the following embodiments, and their description will be omitted.

[0127] 1) In some embodiments, when the two installed grooves 211 are spaced apart in the lower housing assembly 21, the first reference direction may be the alignment direction of the two grooves 211 (i.e., the line connecting the geometric centers of the two grooves 211) or a direction perpendicular to the alignment direction.

[0128] 2) In some embodiments, when the opening and closing of the charging box 20 is achieved by the upper housing assembly 24 rotating relative to the lower housing assembly 21, the first reference direction may be perpendicular or parallel to the axis of rotation of the upper housing assembly 24 relative to the lower housing assembly 21.

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

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

[0131] Furthermore, the charging box 20 has a thickness direction and the tracing groove 211 has a depth direction. As shown in Figure 24, the thickness direction of the charging box 20 and the depth direction of the tracing groove 211 in this application may be perpendicular to the contact plane between the charging box 20 and the horizontal base surface after the charging box 20 is stably placed on a horizontal base surface. The thickness direction of the charging box 20 and the depth direction of the tracing groove 211 in the following embodiments are similar and therefore will not be explained. In actual production and manufacturing processes, errors in perpendicularity exist depending on the process. In other words, in actual products, the perpendicularity of the two objects in this application means that the perpendicularity of the two objects is within an acceptable tolerance range. Perpendicularity is a positional tolerance, and the specific tolerance range can be determined by referring to relevant national standards. The symmetry is similar and will not be explained. On the other hand, the projection overlap in this application includes both situations where the projections completely overlap and situations where the projections partially overlap.

[0132] In some embodiments, as shown in Figure 19, the projections of the first groove region 2111 and the first portion 2112a of the second groove region 2112 onto the first reference direction overlap. Thus, when the earphone 10 is placed in the groove 211, the dimensions of the charging box 20 occupied by the first portion 2112a of the second groove region 2112 and the dimensions of the charging box 20 occupied by the first groove region 2111 can overlap. In other words, the charging box 20 can simultaneously accommodate the first portion 2112a of the second groove region 2112 and the first groove region 2111 in a first dimension in a second reference direction, and the aforementioned first dimension is smaller than the sum of the dimension of the first portion 2112a of the second groove region 2112 in the second reference direction and the dimension of the first groove region 2111 in the second reference direction, thereby reducing the dimensions of the charging box 20 in the second reference direction while ensuring that the earphones 10 can be accommodated, making it easier for the user to carry.

[0133] In some embodiments, in a second reference direction perpendicular to the first reference direction, the projections of the second portion 2112b of the second groove region 2112 and the first groove region 2111 overlap. Thus, when the earphone 10 is placed in the groove 211, the dimensions of the charging box 20 occupied by the second portion 2112b of the second groove region 2112 and the dimensions of the charging box 20 occupied by the first groove region 2111 can overlap. In other words, the charging box 20 can simultaneously accommodate the second portion 2112b of the second groove region 2112 and the first groove region 2111 in a second dimension in a first reference direction, and the aforementioned second dimension is smaller than the sum of the dimension of the second portion 2112b of the second groove region 2112 in the first reference direction and the dimension of the first groove region 2111 in the first reference direction, thereby reducing the dimensions of the charging box 20 in the first reference direction while ensuring that the earphones 10 can be accommodated, making it easier for the user to carry.

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

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

[0136] Furthermore, in the second reference direction, the second portion 2112b of the second copy groove region 2112 is located on the side of the first copy groove region 2111 that is away from the edge of the lower housing assembly 21 adjacent to the first copy groove region 2111. In other words, the second copy groove regions 2112 of the two copy grooves 211 are positioned close to each other. Thus, when two earphones 10 are accommodated, the hook-shaped structures 12 of the two earphones 10 can be positioned close to each other, with portions smaller than the thickness of the core module 11. Also, the second copy groove regions 2112 of the two copy grooves 211 are positioned intersecting each other, so that when the two copy grooves 211 each accommodate an earphone 10, the hook-shaped structures 12 of the two earphones 10 overlap each other. Furthermore, because the hook-shaped structure 12 of the earphone 10 is thinner than the core module 11, the two hook-shaped structures 12 can overlap in close proximity to each other, further improving the utilization rate of the space in the charging box 20, which is advantageous for reducing the volume of the charging box 20.

[0137] In some embodiments, as shown in Figure 20, the hook-shaped structure 12 includes a battery housing 123 and an elastic portion connecting the battery housing 123 and the core module 11, and the two second groove regions 2112 are positioned such that the elastic portions of the earphones 10 overlap each other when accommodating two earphones 10. The elastic portion is thinner than the battery housing 123, and the overlapping of the elastic portions of the two earphones 10 reduces the space occupied by the hook-shaped structure 12 in the thickness direction of the charging box 20, which is advantageous for reducing the volume of the charging box 20. The two elastic portions can overlap in multiple ways; for example, the adjacent edges of the two elastic portions may overlap to form an overlapping region. Alternatively, the elastic portions may be positioned in an arc shape, and the two elastic portions overlap each other, and since the two elastic portions have a certain volume, two non-communicating overlapping regions are formed, and two overlapping points are formed at the geometric centers of the two overlapping regions. Preferably, the two tracing grooves 211 are mirror-image symmetric with respect to the line connecting the two overlapping points as the axis of symmetry, and the direction of the line connecting the two overlapping points is parallel to the first reference direction or the second reference direction.

[0138] In some other embodiments, the second groove regions 2112 of the two grooves 211 are positioned independently of each other. In this way, the two earphones 10 can be housed in the charging box 20 relatively independently, and the removal of the two earphones 10 is unaffected by each other and easy for the user to remove individually.

[0139] Furthermore, the charging box 20 may include a main control circuit board 221 installed in the lower housing assembly 21, and electrode terminals 222 installed on the main control circuit board 221. Multiple sets of electrode terminals 222 may be installed, for example, two sets, depending on the needs. Accordingly, when either earphone 10 is placed in the charging box 20, the electrode terminals 151 on the earphone 10 can make one-to-one contact with the electrode terminals 222 on the charging box 20 to satisfy the needs of functions such as charging and detection. Accordingly, the electrode terminals 222 may include positive electrode power supply terminals and negative electrode power supply terminals, and may further include detection terminals, and the lines connecting these pairs may form a triangle, for example, an equilateral triangle, and may be spaced apart along a straight line, for example, collinear with space between them.

[0140] In one embodiment, as shown in Figures 7 and 24, the electrode terminals in the charging box 20 are the first electrode terminals (i.e., electrode terminal 222), and the electrode terminals in the earphone 10 are the second electrode terminals (i.e., electrode terminal 151). When the first electrode terminals are exposed from the groove 211 and the earphone 10 is housed in the groove 211, the second electrode terminals are connected to the first electrode terminals.

[0141] Specifically, in some embodiments, the first electrode terminal may be installed in the first copy groove region 2111, and the second electrode terminal may be installed in the core module 11. The core module 11 has a rigid structure compared to the hook-shaped structure 12 and has relatively greater rigidity, thus providing a relatively smooth and stable contact surface for the connection between the first electrode terminal and the second electrode terminal, thereby improving the stability of the connection between the first electrode terminal and the second electrode terminal. In some embodiments, the core module 11 may have a magnetic member (for example, the first magnetic attraction member in the above embodiments), and the charging box 20 may have a magnetic attraction structure that engages with the magnetic member in the core module 11, and the connection between the first electrode terminal and the second electrode terminal can be further stabilized by magnetic attraction engagement between the magnetic member of the core module 11 and the magnetic attraction structure in the charging box 20.

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

[0143] Furthermore, the inner surface of the core module 11 (see IS in Figure 7) and the inner surface of the rigid part (see MS in Figure 7) are inclined relative to each other. By positioning the earphone 10 so that its inner surface is inclined relative to the inner surface of the core module 11 and the inner surface of the rigid part, the fit between the earphone 10 and the human ear can be facilitated. Specifically, in this way, the core module 11 is inserted into the concha, and the rigid part can bypass the tragus and connect to the elastic part located on the posterior side of the ear, thereby reducing interference between the earphone 10 and the ear and improving the wearing comfort of the earphone 10. In some embodiments, the tracing groove 211 of the charging box 20 may be positioned such that the first tracing groove region 2111 that accommodates the core module 11 and the region in the second tracing groove region 2112 that accommodates the rigid part are inclined relative to each other, in order to improve the fit with the earphone 10. Compared to the case where the first grooved groove region 2111 housing the core module 11 and the region housing the rigid part in the second grooved groove region 2112 are parallel to each other when viewed from the thickness direction of the charging box 20, by arranging the grooved groove 211 such that the first grooved groove region 2111 housing the core module 11 and the region housing the rigid part in the second grooved groove region 2112 are inclined relative to each other, the projection dimension of the charging box 20 in the thickness direction can be reduced, making it easier to carry. Compared to the case where the first groove region 2111 housing the core module 11 and the region housing the rigid part in the second groove region 2112 are perpendicular to each other, by arranging the groove 211 such that the first groove region 2111 housing the core module 11 and the region housing the rigid part in the second groove region 2112 are inclined relative to each other, the dimensions required in the thickness direction of the charging box 20 when the earphones 10 are placed in the charging box 20 can be reduced, and the user's feel when placing the earphones 10 can be improved. In short, by arranging the groove 211 such that the first groove region 2111 housing the core module 11 and the region housing the rigid part in the second groove region 2112 are inclined relative to each other, the charging box 20 can be fitted to the earphones 10.Furthermore, the thickness, length, and width dimensions of the charging box 20 have all been optimized, making it easier for users to carry and meeting the human-machine engineering needs of the charging box 20.

[0144] In some embodiments, as illustratively shown in Figure 24, the extending direction of the first electrode terminal is installed at an inclination with respect to the thickness direction of the charging box 20 (see β angle in Figure 24). This reduces the space occupied by the first electrode terminal in the thickness direction of the charging box 20, which is advantageous for reducing the volume of the charging box 20. At the same time, when the earphone 10 is housed in the groove 211, the extending direction of the first electrode terminal can coincide with the extending direction of the second electrode terminal, thereby improving the success rate of connection between the first and second electrode terminals. Preferably, the β angle is 10 to 45 degrees, for example, 30 to 40 degrees, or for example, 15 to 25 degrees, and preferably 20 degrees.

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

[0146] Specifically, when the earphone 10 is placed in the groove 211, the extension direction of the first electrode terminal is set inclined with respect to the thickness direction of the charging box 20. As a result, the contact area between the first electrode terminal and the second electrode terminal gradually increases as the earphone 10 is inserted, and the change in the contact area between the first electrode terminal and the second electrode terminal is not instantaneous. This is advantageous for improving the success rate of connection between the first electrode terminal and the second electrode terminal and improving the stability of connection between the first electrode terminal and the second electrode terminal after connection.

[0147] In some embodiments, the depth of the first groove region 2111 gradually increases away from the first electrode terminals, and when the earphone 10 is placed in the groove region 2111, the core module 11 can fit into the depth-changing region of the first groove region 2111, thereby providing a guide and positioning effect for the core module 11, making it easier for the core module 11 to be placed in the first groove region 2111.

[0148] In some embodiments, the first electrode terminal is exposed from one end of the second groove region 2112 adjacent to the first groove region 2111, and the depth of the region accommodating the rigid part in the second groove region 2112 gradually increases in the direction away from the first groove region 2111. In this way, the regions accommodating the rigid part in the first groove region 2111 and the second groove region 2112 can form a tapered structure with a certain angle in the thickness direction of the charging box 20 that fits the rigid part of the earphone 10 and the core module 11, thereby acting as a guide and making it easier for the earphone 10 to fit into the groove 211 when placed in the charging box 20. When the earphone 10 is housed in the groove 211, the tapered structure can also act as a positional limiting effect on the earphone 10, limiting its movement relative to the groove 211 and improving the stability of the earphone 10 when housed in the charging box 20.

[0149] In some embodiments, a first support platform 2113 is provided at the bottom of the second groove region 2112, and the first electrode terminals are provided on the first support platform 2113, and a second support platform 176 is provided on the earphone 10, and the second electrode terminals are provided on the second support platform 176. Exemplarily, as shown in Figure 7, the second support platform 176 may be provided on the rigid part of the earphone 10. The second support platform 176 may be provided at other locations on the core module 11 or the hook-shaped structure 12, and is not specifically limited. When the earphone 10 is housed in the groove 211, the second support platform 176 abuts and engages with the first support platform 2113. By installing the first support platform 2113 and the second support platform 176, the structural strength of the second electrode terminal of the earphone 10 and the structural strength of the copy groove 211 at the first electrode terminal can be improved, thereby improving the stability of the connection between the first electrode terminal and the second electrode terminal. At the same time, when the first electrode terminal and the second electrode terminal are connected, the first support platform 2113 and the second support platform 176 can bear a significant amount of wear, thereby reducing wear on the first electrode terminal, the second electrode terminal and other parts during repeated removal processes of the earphone 10, which is advantageous in improving the service life of the earphone 10 and the charging box 20.

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

[0151] In some other embodiments, the direction normal to the contact surface between the first support platform 2113 and the second support platform 176 is parallel to the extending direction of the first electrode terminal. Thus, the contact surface between the first electrode terminal and the second electrode terminal is parallel to the contact surface between the first support platform 2113 and the second support platform 176, ensuring a smooth connection between the first and second electrode terminals as the earphone 10 is gradually inserted into the groove 211, and reducing resistance during the engagement process of the two support platforms.

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

[0153] For example, as shown in Figures 20 and 9, the hook-shaped structure 12 may include an elastic portion connecting the core module 11 and the battery housing 123, the elastic portion of which may be the portion in which the elastic wire 121 is exposed from the adapter housing 122 and the battery housing 123. The two second copy groove regions 2112 may be positioned so that the elastic portions of the two earphones 10 overlap each other. In this way, one of the two earphones 10 may be placed in the copy groove 211 first, and then the other may be placed in the copy groove 211, and the first earphone 10 may be deformed to some extent, thereby allowing the later earphone 10 to be placed in the lower housing assembly 21 more easily.

[0154] Furthermore, when viewed from directly above the charging box 20, for example, by first placing the charging box 20 on a table and then viewing it from above, the elastic part of the hook-shaped structure 12 may be arranged in an arc shape, and when the elastic parts of the two earphones 10 overlap each other, two overlapping points (for example, shown as OP1 and OP2 in Figure 20) are formed, and the two tracing grooves 211 may be mirror-image symmetric with respect to the line connecting the two overlapping points (i.e., line segment OP1OP2), thereby making the distribution of the two tracing grooves 211 more rational and advantageous in improving the appearance quality of the charging box 20.

[0155] In some embodiments, the region located between the two overlapping points of the two second groove regions 2112 can retain a portion of the lower housing assembly 21, i.e., the two second groove regions 2112 form an island at their confluence, thus advantageous in limiting the degrees of freedom after either earphone 10 is placed in the groove 211. In other words, the island is formed in the region surrounded by the hook-shaped structure 12 of the two second groove regions 2112 and located between the two overlapping points.

[0156] In one embodiment, two earphones 10 are worn on the user's left and right ears, respectively, and the core modules 11 of the two earphones 10 are located on either side of a first reference direction. By installing them in this manner, when viewed from the first reference direction, that is, when the user opens the charging box 20 to the front, the earphone 10 worn on the left ear is housed on the left side relative to the user, and the earphone 10 worn on the right ear is housed on the right side relative to the user, thereby making it easy for the user to remove the earphones 10 from the charging box 20 and to put the earphones 10 back into the charging box 20. Preferably, the two tracing grooves 211 are mirror-image symmetric with respect to the line connecting the two overlapping points as the axis of symmetry. The direction of the line connecting the two overlapping points is parallel to the first reference direction.

[0157] In some embodiments, the regions surrounded by the hook-shaped structures 12 of the two second groove regions 2112 and located between the two overlapping points are integrated with each other, i.e., there are no islands, so the two second groove regions 2112 become one at their confluence, thus advantageous for easily inserting the earphone 10 into the corresponding groove 211.

[0158] For example, as shown in Figures 20 and 9, the hook-shaped structure 12 may include a rigid portion located between the elastic portion and the core module 11, the rigid portion connecting the core module 11 and the elastic portion, and may include an adapter housing 122 and its electrode terminals 151 and magnet 127. Accordingly, the lower housing assembly 21 may include a position-limiting structure 212, which may be installed in or adjacent to the copy groove 211. After either earphone 10 is placed in the groove 211, the position limiting structure 212 can apply a pressing force toward the bottom of the groove 211 to the rigid part of the earphone 10 to maintain the relative position between the earphone 10 and the lower housing assembly 21, and at least a portion of the elastic part of the same earphone 10 forms a cantilever structure with respect to the point of action of the rigid part of the position limiting structure 212, that is, at least a portion of the elastic part of either earphone 10 does not have to contact the bottom of the groove 211 (particularly the second groove region 2112). In this way, when one of the two earphones 10 is placed in the groove 211 first and then the other earphone 10 is placed in the groove 211, the elastic part of the earphone 10 that was placed first becomes more easily deformable, thereby allowing the later-placed earphone 10 to be placed more easily into the lower housing assembly 21.

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

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

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

[0162] In some embodiments, the position limiting structure 212 may be a position limiting groove communicating with the tracing groove 211, and the hook-shaped structure 12 moves further into the position limiting groove after one of the earphones 10 is placed in the tracing groove 211, i.e., the earphone 10 as a whole has a displacement. The aforementioned position limiting groove may be installed within the tracing groove 211.

[0163] Exemplary, the charging box 20 may include a first magnetic attraction structure 231 installed within the lower housing assembly 21. After one of the earphones 10 is placed in the tracking groove 211, the first magnetic attraction structure 231 forms a first magnetic attraction matching pair with a first magnetic attraction member in the earphone 10. For example, the two magnets attract each other, guiding the hook-shaped structure of the earphone 10 further into the position-limiting groove. A guide surface may be provided at the bottom of the tracking groove 211 to guide the hook-shaped structure of the earphone 10 into the position-limiting groove. For example, the depth of the segment of the second tracking groove region 2112 adjacent to the first tracking groove region 2111 is greater than the depth of the first tracking groove region 2111, i.e., there is a height difference between them, and the tracking groove 211 is installed to transition inclined toward the region with the height difference, thereby forming the aforementioned guide surface. Accordingly, the position limiting groove may be located in a segment of the second tracing groove region 2112 that is adjacent to the first tracing groove region 2111.

[0164] Furthermore, the charging box 20 may include a second magnetic attraction structure 232 installed within the lower housing assembly 21, and the electrode terminal 222 may be located between the first magnetic attraction structure 231 and the second magnetic attraction structure 232. After either earphone 10 is placed in the tracking groove 211, the second magnetic attraction structure 232 can form a second magnetic attraction matching pair with a second magnetic attraction member in the earphone 10, and together with the first magnetic attraction matching pair, the two magnets attracting each other, for example, to guide the hook-shaped structure of the earphone 10 further into the position limiting groove, providing more power for either earphone 10 to move further into the position limiting groove after being placed in the tracking groove 211. Similarly, the aforementioned first magnetic attraction matching pair and the aforementioned second magnetic attraction matching pair cause the electrode terminal 222 and the electrode terminal 151 to make one-to-one contact. Thus, after the electrode terminals 222 and 151 are paired, they are positioned between the first magnetic attraction matching pair and the second magnetic attraction matching pair, resulting in better contact between the earphone 10 and the charging box 20. Furthermore, the position limiting structure 212 can further ensure contact between the earphone 10 and the charging box 20.

[0165] The first magnetic attraction member may be the speaker 112 in the core module 11, specifically the magnetic circuit system of the speaker 112, and the second magnetic attraction member may be the magnet 127 installed on the hard part of the earphone 10.

[0166] Normally, when the earphones 10 are placed in the charging box 20, deformation of the hook-shaped structure 12 can reduce the success rate of placing the earphones 10 in the box or affect the stability of the earphones 10's placement. For example, the core module 11 of the earphones 10 may be placed in the first groove region 2111, and the hook-shaped structure 12 may be placed in the second groove region 2112. However, because the structure is elastic, during the process of placing it in the second groove region 2112, pre-existing deformation due to use or deformation due to inertial force may prevent it from properly conforming to the shape of the second groove region 2112, making it difficult to place in the groove region 211, and simultaneously making the placement relationship between the core module 11 and the first groove region 2111 unstable. To solve the above technical problems, the following embodiment is provided.

[0167] In some embodiments, as shown in Figure 20, a certain movable gap is provided between the core module 11 and the side wall of the first groove region 2111, and a certain movable gap is provided between the hook-shaped structure 12 and the side wall of the second groove region 2112. This provides sufficient space for the groove 211 to allow for some deformation of the hook-shaped structure 12 during the process of inserting the earphone 10 into the groove 211, ensuring that the core module 11 and the hook-shaped structure 12 can be smoothly inserted into the first groove region 2111 and the second groove region 2112, respectively, with minimal user intervention, further improving the success rate of inserting the earphone into the box and the stability of storage. Furthermore, since one end of the hook-shaped structure 12 is connected to the core module 11 and the other end is cantilevered, the portion of the hook-shaped structure 12 away from the core module 11 can be considered the far end of the cantilever beam. In the process of inserting the earphone 10 into the tracing groove 211, the portion of the hook-shaped structure 12 away from the core module 11 will undergo a larger deformation than other portions. Also, the core module 11 requires a smaller movable gap than the hook-shaped structure 12, and it is sufficient if the core module 11 can be inserted into the first tracing groove region 2111. If the movable gap is too large, it is disadvantageous to optimizing the dimensions of the charging box 20, the housing of the core module 11 within the charging box becomes unstable, and shaking and abnormal noises are likely to occur.

[0168] In some embodiments, when the earphone 10 is placed in the groove 211, the movable gap between the portion of the hook-shaped structure 12 away from the core module 11 and the side wall of the second groove region 2112 (see side wall 2111c in Figure 20) is made larger than the movable gap between the core module 11 and the side wall of the first groove region 2111. This allows the first groove region 2111 to allow the core module 11 to be placed smoothly, while the second groove region 2112 provides the hook-shaped structure 12 with a larger movable space, further improving the success rate and storage stability of the earphone 10 in the box, and optimizing the dimensions of the charging box 20. When the hook-shaped structure 12 is housed in the second groove region 2112, it still deforms due to vibration or stress, and the dimensions of the movable gap between the hook-shaped structure 12 and the side wall of the second groove region 2112 change, but such changes do not cause the movable gap to disappear. Preferably, the dimensional range of the movable gap between the portion of the hook-shaped structure 12 away from the core module 11 and the side wall of the second groove region 2112 is 0.5 to 1.5 mm, for example, the dimensions of the movable gap may be 1 to 1.3 mm, and specifically, 1.2 mm. By setting the dimensions of the movable gap in this way, the success rate of placing the hook-shaped structure 12 into the second groove region 2112 can be improved, and the impact on the dimensions of the charging box 20 is small.

[0169] Preferably, the dimensional range of the movable gap between the core module 11 and the side wall of the first groove region 2111 is 0.05 to 0.2 mm, for example, the dimension of the movable gap may be 0.07 to 0.15 mm, and specifically, it may be 0.1 mm. The movable gap set in this manner allows the core module 11 to be stably housed in the first groove region 2111, enabling positioning and positional constraints for the housing of the earphone 10 within the groove 211, which is advantageous for improving the stability of contact of the electrode terminals.

[0170] In some embodiments, the portion of the hook-shaped structure 12 away from the core module 11 includes a battery housing 123 for housing a battery. The battery housing 123 is installed in the portion of the hook-shaped structure 12 away from the core module 11. The hook-shaped structure 12 may further include an elastic portion connecting the core module 11 and the battery housing 123. The battery housing 123 has larger dimensions than the elastic portion, so that the elastic portion surrounds the user's ear and hangs the earphone 10, and the battery housing 123 supports the ear from the rear, thus improving the stability of the earphone 10 when worn. The movable gap between the battery housing 123 and the side wall of the second groove region 2112 is larger than the movable gap between the core module 11 and the side wall of the first groove region 2111. In this way, the success rate of inserting the battery housing 123 into the second groove region 2112 can be improved, and the earphone 10 can be easily accommodated. Furthermore, when the earphone 10 is housed in the groove 211, the movable gap between the elastic part and the side wall of the second groove region 2112 is larger than the movable gap between the core module 11 and the side wall of the first groove region 2111. In this way, the success rate of inserting the elastic part into the second groove region 2112 can be improved, making it easier to house the earphone 10.

[0171] In some embodiments, the hook-shaped structure 12 further includes a rigid portion connecting the elastic portion and the core module 11. Since the electrode terminals 151 or a second magnetic attraction member can be installed on the rigid portion, it needs to have higher rigidity than the elastic portion, and therefore has a higher requirement for stability. When the earphone 10 is housed in the groove 211, the movable gap between the elastic portion and the side wall of the second groove region 2112 can be made larger than the movable gap between the rigid portion and the side wall of the second groove region 2112. In this way, the elastic portion can be easily inserted into the second groove region 2112, and the rigid portion can be stably housed in the second groove region 2112, thereby allowing the rigid portion to fit to the core module 11, increasing the stability of the earphone 10 being housed in the groove 211, which is advantageous for improving the contact of the electrode terminals or the stability and reliability of the second magnetic attraction member.

[0172] In some embodiments, the charging box 20 includes at least electrode terminals for charging, and the electrode terminals do not necessarily have to be installed in the battery housing 123. The battery housing 123 is located at the end of the hook-shaped structure 12, and the degree of deformation that occurs there is large, so installing the electrode terminals in the battery housing 123 is disadvantageous for matching with the electrode terminals in the lower housing assembly 21. Specifically, the electrode terminals do not necessarily have to be installed in the battery housing 123, but can be installed in a structure on the earphone 10 that deforms less, for example, the core module 11 or a rigid part, thereby facilitating matching between the electrode terminals.

[0173] In some embodiments, as shown in Figure 19, a position-restricting structure may be installed in the lower housing assembly 21, and in the process of inserting the earphone 10 into the tracing groove 211, the core module 11 may be accommodated in the first tracing groove region 2111 by the position-restricting structure. For example, the position-restricting structure may be a locking structure, and the core module 11 may be inserted into the first tracing groove region 2111 by locking with the position-restricting structure. Alternatively, for example, the position-restricting structure may be a magnetic attraction structure, and the core module 11 may be inserted into the first tracing groove region 2111 by magnetic attraction and engagement with the position-restricting structure. Specifically, a first magnetic attraction structure 231 may be installed in the first tracing groove region 2111, and a first magnetic attraction member may be installed in the core module 11, and when the core module is inserted into the first tracing groove region 2111, the first magnetic attraction member and the first magnetic attraction structure 231 engage by magnetic attraction. The specific circumstances under which the core module 11 is housed in the first groove region 2111 by magnetic attraction can be described in the above embodiment, and will not be described here. The core module 11 is stably housed in the first groove region 2111 by the above method, limiting the movement of the earphone 10 in the charging box 20 and improving the stability of the matching between the electrode terminals.

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

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

[0176] In some embodiments, the hook-shaped structure 12 includes a battery housing 123 that houses the battery, and the stopper portion 245 abuts against the battery housing 123 when the charging box 20 is closed. The battery housing 123 is a large volume portion of the hook-shaped structure 12, and the stopper portion 245 can improve the stability of the hook-shaped structure 12 when it is housed in the charging box 20 by limiting the movement of the battery housing 123. Furthermore, the core module 11 can be housed in the first copy groove region 2111 by means of engagement or magnetic attraction, thereby limiting the degrees of freedom of the core module 11. In this way, when the earphone 10 is housed in the copy groove 211, the degrees of freedom of both the core module 11 and the hook-shaped structure 12 of the earphone 10 are limited, thereby greatly limiting the freedom of movement of the earphone 10, preventing the earphone 10 from shaking in the charging box 20, and further avoiding wear on the charging box 20 and the earphone 10, thereby improving the service life.

[0177] In some other embodiments, the movable gap between the battery housing 123 and the side wall of the second groove region 2112 is larger than the movable gap between the core module 11 and the side wall of the first groove region 2111. The beneficial effects of this configuration can be found in the description of the embodiments above and will not be described here. A larger movable gap between the battery housing 123 and the side wall of the second groove region 2112 increases the success rate of inserting the earphones 10 into the charging box 20, but the hook-shaped structure 12 becomes more prone to shaking. Based on this, by further installing a stopper portion 245 that contacts the battery housing 123 when the charging box 20 is closed, the success rate of inserting the earphones 10 can be improved while reducing the shaking of the hook-shaped structure 12.

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

[0179] Preferably, the lower housing assembly 21 may include a position-restricting structure 212, which may be installed in or adjacent to the copy groove 211. After any of the earphones 10 are placed in the copy groove 211, the position-restricting structure 212 can apply a pressing force toward the bottom of the copy groove 211 to the rigid part or core module 11 of the earphone 10 to maintain the relative position between the earphone 10 and the lower housing assembly 21, thereby limiting the degree of freedom of the earphone 10 and reducing the shaking of the earphone 10 in the charging box 20. Furthermore, the stopper portion 245 can contact the hook-shaped structure 12 to reduce the shaking of the hook-shaped structure 12, thereby further reducing the shaking of the earphone 10.

[0180] In some embodiments, the stopper portion 245 may have a flexible structure, for example, the material of the stopper portion 245 may be silicone rubber or rubber. The Shore hardness range of the stopper portion 245 may be 20 to 50. In this way, the stopper portion 245 can deform when it comes into contact with the hook-shaped structure 12, reducing wear of the stopper portion 245 against the hook-shaped structure 12, while also making the force applied by the stopper portion 245 to the hook-shaped structure 12 more uniform, allowing the stopper portion 245 to fit the shape of the hook-shaped structure 12 better, thereby further limiting the movement of the hook-shaped structure 12 in multiple directions, reducing vibration within the groove 211 of the earphone 10, and mitigating issues such as abnormal noise caused by movement.

[0181] In some other embodiments, the stopper portion 245 may include a contact portion and an extendable portion, the extendable portion connecting the contact portion and the upper housing assembly 24, and elastically extending and contracting to bring the contact portion into contact with the hook-shaped structure 12 when the charging box 20 is closed. In other words, the extendable portion can provide an elastic force when the contact portion contacts the hook-shaped structure 12, thereby allowing the contact portion to apply pressure to the hook-shaped structure 12 and limit its oscillation. Specifically, the extendable portion may be a structure such as a spring or a torsion spring.

[0182] Preferably, the thickness range of the stopper portion 245 may be 1.2 to 2 mm, for example, 1.2 mm, 1.5 mm, or 2 mm. If the thickness of the stopper portion 245 is less than 1.2 mm, the stopper portion 245 may not be able to sufficiently interfere with the hook-shaped structure 12, and may not be able to generate sufficient pressure to limit the movement of the hook-shaped structure 12. If the thickness of the stopper portion 245 is greater than 2 mm, the pressure on the hook-shaped structure 12 by the stopper portion 245 may be too great, causing the hook-shaped structure 12 to continue to deform when it is housed, and furthermore, the hook-shaped structure 12 may lose its original shape, potentially affecting the user's wearing experience.

[0183] In some embodiments, the first portion 2112a of the second groove region 2112 accommodates a part of the hook-shaped structure 12 (e.g., the battery housing 123), and when the charging box 20 is closed, the projection of the first portions 2112a of the two second groove regions 2112 into the thickness direction of the charging box 20 covers at least a portion of the projection of the stopper portion 245 into the thickness direction of the charging box 20. In this way, at least a portion of the stopper portion 245 can be brought into contact with the hook-shaped structure, and the limited area of ​​the stopper portion 245 does not extend beyond the area where the first portion 2112a of the second groove region 2112 is located, thereby reducing the excess portion that may be generated in the stopper portion 245 and lowering costs.

[0184] Furthermore, as shown in Figure 26, in some embodiments, the stopper portion 245 may be a single arc-shaped structure that simultaneously contacts two hook-shaped structures 12. The projected length of the stopper portion 245 in a first reference direction perpendicular to the axis of the rotation axis mechanism 25 (see L in Figure 26) is in the range of 20 to 24 mm, and may be, for example, 21 to 23 mm or 22 to 22.5 mm. If the projected length of the stopper portion 245 in the first reference direction is less than 20 mm, the contact area between the stopper portion 245 and each hook-shaped structure 12 decreases, which may prevent the stopper portion 245 from simultaneously contacting two hook-shaped structures 12, causing the stopper portion 245 to lose its ability to simultaneously limit the position of the two hook-shaped structures 12. If the projected length of the stopper portion 245 in the first reference direction is greater than 24 mm, there will still be excess length in the portion of the stopper portion 245 other than the portion that contacts the hook-shaped structure 12, and this excess length will increase production costs.

[0185] In some embodiments, the projection length of the stopper portion 245 in a second reference direction perpendicular to the first reference direction (see H in Figure 26) is in the range of 3 to 7 mm, and may be, for example, 3 to 6 mm or 5 to 6 mm. If the projection length of the stopper portion 245 in the second reference direction is less than 3 mm, the contact area between the stopper portion 245 and the hook-shaped structure 12 decreases, and the ability of the stopper portion 245 to restrict the movement of the hook-shaped structure 12 weakens. If the projection length of the stopper portion 245 in the second reference direction is greater than 7 mm, the contact area between the stopper portion 245 and the hook-shaped structure 12 is large, excessively increasing the pressure that the stopper portion 245 applies to the hook-shaped structure 12, causing undesirable deformation of the hook-shaped structure 12.

[0186] In some embodiments, the upper housing assembly 24 is provided with a housing groove 244 for accommodating the earphone 10 when the charging box 20 is closed. The housing groove 244 accommodates the portion of the earphone 10 not accommodated in the tracking groove 211 when the upper housing assembly 24 closes to the lower housing assembly 21, thereby allowing the upper housing assembly 24 and the lower housing assembly 21 to close tightly. Furthermore, when the charging box 20 is closed, the side walls of the housing groove 244 may provide further positional restricting effects on the earphone 10, limiting its movement within the charging box 20. In addition, a stopper portion 245 is provided within the housing groove 244. The stopper portion 245 cooperates with the housing groove 244 so that when the earphone 10 is simultaneously accommodated in the tracking groove 211 and the housing groove 244, the stopper portion 245 can apply pressure to the hook-shaped structure 12, limiting its movement and reducing vibration and noise.

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

[0188] Preferably, in the closed state of the charging box 20, the distance range from the stopper portion 245 to the side wall of the upper housing assembly 24 adjacent to the second overlap point OP2 is 15 to 20 mm. In this way, the stopper portion 245 can be brought into contact with the portion of the hook-shaped structure 12 adjacent to the second overlap point OP2. Since the regions of the two hook-shaped structures 12 adjacent to the second overlap point OP2 have an overlapping portion, this region has a large height in the thickness direction of the charging box 20, thereby reducing the thickness of the stopper portion 245. If the distance of the stopper portion 245 from the edge of the lower housing assembly 21 adjacent to the second overlap point OP2 is less than 15 mm, the stopper portion 245 will move away from the second overlap point OP2, and the stopper portion 245 will increase in thickness before coming into contact with the hook-shaped structure 12. If the distance of the stopper portion 245 from the edge of the lower housing assembly 21 that is close to the second overlapping point OP2 is greater than 20 mm, the area in contact between the stopper portion 245 and the hook-shaped structure 12 decreases, and the limiting effect is weakened.

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

[0190] Furthermore, the rotating shaft mechanism 25 may also include an elastic member 255, one end of which is connected to the lower housing assembly 21, for example, to the lower fixing seat 251, and the other end of which is connected to the upper housing assembly 24, to maintain the open or closed state of the charging box 20. In the process of opening and closing the charging box 20, the elastic member 255 elastically deforms accordingly to provide a certain resistance, of course, which may in part come from the frictional resistance when the rotating shaft 253 and its connecting structure rotate.

[0191] For example, as shown in Figure 21, the elastic member 255 may be installed as a Z-shaped torsion spring, the basic structure of which is well known to those skilled in the art and will not be described here. One of the lower fixing seat 251 and the upper housing assembly 24 may be provided with a mounting hole 2411, and the other with a mounting groove 2511. For example, the mounting hole 2411 is installed in the upper housing body 241 and is located between the two upper fixing seats 252 in the extending direction of the rotation axis 253, and the mounting groove 2511 is installed in the lower fixing seat 251 and is located between the two sleeve portions 2542 in the extending direction of the rotation axis 253. Thus, in the process of installing the elastic member 255, one end of the elastic member 255 is first inserted into the mounting hole 2411 along the axial direction of the mounting hole 2411, and the other end is further fitted into the mounting groove 2511 along a direction perpendicular to the axial direction of the mounting groove 2511. This reduces the amount of deformation of the elastic member 255 during the installation process and is advantageous in maintaining the reliability of the elastic member 255. Furthermore, the mounting hole 2411 and the mounting groove 2511 may be installed as through-hole structures along their respective axial directions.

[0192] Exemplary, as shown in Figure 21, the upper fixing seats 252 may be installed at intervals along the extending direction of the rotational shaft 253, and the lower fixing seat 251 may be located between the two upper fixing seats 252 and installed at intervals from the two upper fixing seats 252 in the extending direction of the rotational shaft 253, which is advantageous for supporting the rotational shaft 253. The reinforcing member 254 may include a connecting portion 2541 connected to the lower fixing seat 251 and two sleeve portions 2542 installed at intervals along the extending direction of the rotational shaft 253, the two sleeve portions 2542 each of which may be located within the spaced area between the lower fixing seat 251 and the two upper fixing seats 252. Accordingly, the rotational shaft 253 is installed through the lower fixing seat 251, the two sleeve portions 2542 and the two upper fixing seats 252.

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

[0194] In the above method, in related technologies, the upper housing assembly 24 is connected to the lower housing assembly 21 via a metal connecting member, meaning that the upper housing assembly 24 and the lower housing assembly 21 cannot be connected after the metal connecting member is removed, and the metal connecting member must be exposed. In this technical means, however, the upper housing assembly 24 and the lower housing assembly 21 remain connected after the reinforcing member 254 is removed, and the reinforcing member 254 does not need to be exposed, which is advantageous for reducing the cost of the charging box 20 and ensuring consistency in appearance.

[0195] For example, as shown in Figures 28 to 31, the charging box 20 may include an upper housing assembly 24 and a rotating shaft mechanism 25 connecting the upper housing assembly 24 and the lower housing assembly 21, thereby enabling the charging box 20 to be opened and closed. The charging box 20 further includes a position limiting mechanism, which limits the angle of rotation of the upper housing assembly 24 relative to the lower housing assembly 21 when the charging box 20 is in the open state; in other words, the position limiting mechanism can limit further relative rotation of the upper housing assembly 24 when it has rotated to a predetermined angle relative to the lower housing assembly 21. The angle at which the upper housing assembly 24 opens relative to the lower housing assembly 21 may be the angle between the lower surface of the lower housing assembly 21 and the upper surface of the upper housing assembly 24 (see angle α in Figure 27). By installing a position limiting mechanism, the angle at which the upper housing assembly 24 opens relative to the lower housing assembly 21 can be limited, thereby reducing the risk of damage to the housing structure of the charging box 20 due to excessive rotation of the upper housing assembly 24, and solving problems such as surface wear of the charging box 20 due to contact with the housing.

[0196] In some embodiments, a position limiting mechanism limits the angle by which the upper housing assembly 24 opens relative to the lower housing assembly 21 by being connected to the upper housing assembly 24 and the lower housing assembly 21, respectively. For example, the position limiting mechanism may include two links, which are hinged to each other and hinged to the upper housing assembly 24 and the lower housing assembly 21, respectively. When the upper housing assembly 24 rotates to a predetermined angle relative to the lower housing assembly 21, the two links align in a straight line, thereby limiting further rotation of the upper housing assembly 24 relative to the lower housing assembly 21. When the charging box 20 is converted from an open state to a closed state, the two links rotate relative to each other, and the connection points to the upper housing assembly 24 and the connection points to the lower housing assembly 21 move closer to each other. In other words, the two links limit the rotation of the upper housing assembly 24 to the open state relative to the lower housing assembly 21, but do not limit the rotation of both to the closed state.

[0197] In some embodiments, the position limiting mechanism includes a first position limiting member 271 and a second position limiting member 272, the second position limiting member 272 being connected to the upper housing assembly 24 and capable of moving in accordance with the upper housing assembly 24. The first position limiting member 271 is connected to the lower housing assembly 21 and capable of moving in accordance with the lower housing assembly 21. The first position limiting member 271 and the second position limiting member 272 contact each other when the upper housing assembly 24 has rotated to a predetermined angle relative to the lower housing assembly 21, thereby limiting further rotation of the upper housing assembly 24 relative to the lower housing assembly 21. Preferably, the predetermined angle range is 90 to 110 degrees, and if the predetermined angle is less than 90 degrees, i.e., if the angle between the upper housing assembly 24 and the lower housing assembly 21 is acute, the upper housing assembly 24 tends to close again due to gravity or the elastic member of the rotation axis mechanism 25, which is disadvantageous to the user in removing or housing the earphone 10. Furthermore, if the predetermined angle is less than 90 degrees, the upper housing assembly 24 will interfere with the earphone 10 when the user removes or inserts it, affecting the user experience. If the predetermined angle is greater than 110 degrees, the angle at which the upper housing assembly 24 opens relative to the lower housing assembly 21 is too large, increasing the strength requirements for the rotation axis mechanism 25 and the position limiting mechanism. Also, if the angle at which the upper housing assembly 24 opens relative to the lower housing assembly 21 is too large, the length of the charging box 20 when open will be longer, and the length of the charging box 20 when open is the distance from the furthest end of the upper housing assembly 24 from the rotation axis mechanism to the furthest end of the lower housing assembly 21 from the rotation axis mechanism. For example, in a critical situation where the charging box 20 is dropped or pressed, if the length of the charging box 20 when open is long, the moment experienced by the upper housing assembly 24 and the lower housing assembly 21 will be large, increasing the risk of damage to the charging box 20.

[0198] In some embodiments, a slot 247 is provided on the edge of the upper housing assembly 24 adjacent to the lower housing assembly 21, and a rotation axis mechanism 25 includes a rotation axis 253 bridged at both ends of the slot 247, so that the upper housing assembly 24 rotates relative to the lower housing assembly 21 around the rotation axis 253. In some embodiments, the predetermined angle is smaller than the angle at which the upper housing assembly 24 opens relative to the lower housing assembly 21 when the slot edge of the slot 247 abuts against the outer wall of the lower housing assembly 21. The slot 247 facilitates the rotation of the upper housing assembly 24 relative to the lower housing assembly 21. When the slot edge of the slot 247 abuts against the outer wall of the lower housing assembly 21, the rotation of the upper housing assembly 24 relative to the lower housing assembly 21 is also limited. However, limited by the material and structure of the upper housing assembly 24 and the lower housing assembly 21, the positional limiting method by abutment of the slot edge is demanding on the structural strength of the housing of the charging box 20 and increases process and material costs. By adding a position limiting mechanism, the angle at which the upper housing assembly 24 opens relative to the lower housing assembly 21 is limited, improving the position limiting strength, while also reducing the structural strength requirements for the charging box and lowering costs.

[0199] Furthermore, when the slot edge of slot 247 abuts against the outer wall of the lower housing assembly 21, pressure is applied to the outer wall of the lower housing assembly 21, making it easy for indentations to occur on the outer wall of the lower housing assembly 21, affecting its aesthetics. Also, in the abutment area where indentations occur on the outer wall of the lower housing assembly 21, stress concentration occurs when force is applied, and the strength of the lower housing assembly 21 is greatly affected. To avoid stress concentration in the abutment area, a predetermined angle is set such that it is smaller than the angle at which the upper housing assembly 24 opens relative to the lower housing assembly 21 when the slot edge of slot 247 abuts against the outer wall of the lower housing assembly 21. By doing so, when the upper housing assembly 24 opens to a predetermined angle relative to the lower housing assembly 21, further rotation is limited by the position limiting mechanism, preventing the slot edge of slot 247 from abutting against the outer wall of the lower housing assembly 21. For example, the angle at which the upper housing assembly 24 and the lower housing assembly 21 can open when the slot edge of slot 247 abuts against the outer wall of the lower housing assembly 21 is 120 degrees, and a predetermined angle is 110 degrees. The position limiting mechanism limits further rotation of the upper housing assembly 24 when the upper housing assembly 24 opens to 110 degrees relative to the lower housing assembly 21, thereby avoiding contact between the slot edge of slot 247 and the outer wall of the lower housing assembly 21.

[0200] In some embodiments, the rotation axis mechanism 25 includes a first fixed seat 256 attached to the lower housing assembly 21 and a second fixed seat 257 attached to the upper housing assembly 24, and the rotation axis 253 is driven through the first fixed seat 256 and the second fixed seat 257. The strength of the rotation axis mechanism 25 can be improved by installing the first fixed seat 256 and the second fixed seat 257. The position limiting mechanism includes a first position limiting member 271 connected to the first fixed seat 256 and a second position limiting member 272 connected to the second fixed seat 257, the first position limiting member 271 and the second position limiting member 272 contact each other when the upper housing assembly 24 is rotated to a predetermined angle relative to the lower housing assembly 21, thereby limiting further rotation of the upper housing assembly 24 relative to the lower housing assembly 21.

[0201] Preferably, as shown in Figures 28 and 29, the extending direction of the first position limiting member 271 and the extending direction of the second position limiting member 272 are perpendicular to each other. In this way, the success rate of contact between the first position limiting member 271 and the second position limiting member 272 can be improved. In some embodiments, one of the extending directions of the first position limiting member 271 and the second position limiting member 272 is set along the axial direction of the rotation axis 253, and the other extending direction is set along the radial direction of the rotation axis 253. In this way, the relative rotation of the first position limiting member 271 and the second position limiting member 272 can be matched with the rotation of the upper housing assembly 24 and the lower housing assembly 21 with respect to the rotation axis 253, thereby allowing the first position limiting member 271 and the second position limiting member 272 to limit the rotation of the upper housing assembly 24 and the lower housing assembly 21 with respect to the rotation axis 253.

[0202] In some embodiments, the first position limiting member 271 and the first fixing seat 256 are integrally molded metal members. Alternatively, the second position limiting member 272 and the second fixing seat 257 are integrally molded metal members. Alternatively, the first position limiting member 271 and the first fixing seat 256 are integrally molded metal members, and the second position limiting member 272 and the second fixing seat 257 are integrally molded metal members. By installing the first fixing seat 256 and the second fixing seat 257 as metal members, both can have sufficient strength while having a small volume, thereby reducing the space they occupy in the charging box 20 and contributing to a reduction in the volume of the charging box 20. By integrally molding the first position limiting member 271 and the first fixing seat 256, or the second position limiting member 272 and the second fixing seat 257, when the first position limiting member 271 and the second position limiting member 272 come into contact and receive force, their moments are transmitted to the charging box 20 via the first fixing seat 256 or the second fixing seat 257, and the connection structure between the first fixing seat 256 and the second fixing seat 257 and the charging box 20 has high connection strength. Therefore, by integrally molding the first position limiting member 271 and the first fixing seat 256, or the second position limiting member 272 and the second fixing seat 257, the stability when the first position limiting member 271 and the second position limiting member 272 come into contact can be improved.

[0203] Exemplary, as shown in Figures 30 to 32, one of the first position limiting member 271 and the second position limiting member 272 is provided with a position limiting groove 2721, and the other of the first position limiting member 271 and the second position limiting member 272 engages with the position limiting groove 2721 when the charging box 20 is opened to limit the rotation of the upper housing assembly 24 relative to the lower housing assembly 21. In some embodiments, the second position limiting member 272 may also be provided with a position limiting groove 2721, and the first position limiting member 271 is inserted into the position limiting groove 2721 after the upper housing assembly 24 has been opened to a first angle relative to the lower housing assembly 21, the first angle being smaller than a predetermined angle. When the upper housing assembly 24 rotates to the predetermined angle relative to the lower housing assembly 21, the first position limiting member 271 abuts against the groove wall of the position limiting groove 2721. The contact engagement between the first position limiting member 271 and the position limiting groove 2721 allows the groove wall of the position limiting groove 2721 to also limit the position of the first position limiting member 271 when the position limiting mechanism is subjected to forces in other directions, thereby improving the strength and reliability of the position limiting of the position limiting mechanism. When the charging box 20 rotates from an open to a closed position, the first position limiting member 271 can escape from the position limiting groove 2721, thereby reducing the influence of the position limiting mechanism on the charging box 20 when it closes. In some other embodiments, the first position limiting member 271 may be provided with a position limiting groove 2721, and the second position limiting member 272 is inserted into the position limiting groove 2721 after the upper housing assembly 24 has been opened to a first angle relative to the lower housing assembly 21.

[0204] Furthermore, when the charging box 20 is in the open position, the angle between the extending direction of the first position limiting member 271 and the extending direction of the second position limiting member 272 is obtuse. In this way, even if the length of the second position limiting member 272 or the first position limiting member 271 is short, they can be smoothly inserted into or smoothly removed from the position limiting groove 2721. If the extending direction of the first position limiting member 271 and the extending direction of the second position limiting member 272 are perpendicular and acute, the position limiting groove 2721 would need to be long enough to ensure that the first position limiting member 271 or the second position limiting member 272 can be smoothly removed, increasing the overall volume of the rotating shaft mechanism 25 and occupying more space in the charging box 20.

[0205] In some embodiments, the connection and engagement of the lower housing assembly 21, the position limiting mechanism and the rotating shaft mechanism 25 can be described by referring to the following exemplary description, wherein the lower housing assembly 21 is provided with two first support parts 215 spaced apart along the axial direction of the rotating shaft 253 and a first reinforcing part 216 located between the two first support parts 215, the first reinforcing part 216 may be a reinforcing rib structure or a structure thicker than the other side walls of the charging box 20, the first reinforcing part 216 can enhance the structural strength of the charging box 20, thereby enabling the charging box 20 to stably support the rotating shaft mechanism 25 and the position limiting mechanism. Each of the two first support portions 215 is provided with a first fitting groove 2151, and the first fixed seat 256 includes a first plate-shaped body 2561, the lower edge of which faces the lower housing assembly 21 of the first plate-shaped body 2561 is inserted into the first fitting groove 2151 of the two first support portions 215, and the first plate-shaped body 2561 abuts against the first reinforcing portion 216. The first reinforcing portion 216 can improve the structural strength of the lower housing assembly 21 itself, while the engagement between the first fixed seat 256 and the first reinforcing portion 216 improves the engagement strength between the rotating shaft mechanism 25 and the lower housing assembly 21, allowing the rotating shaft mechanism 25 to be easily assembled to the lower housing assembly 21. Preferably, the lower housing assembly 21 includes a lower housing body 213 and a lower housing lining 214, and the first support portion 215, the first reinforcing portion 216 and the first fixing seat 256 are installed between the lower housing body 213 and the lower housing lining 214.

[0206] In some embodiments, the first fixed seat 256 further includes two first extensions 2562, the two first extensions 2562 extending from the first plate-like body 2561 toward the first reinforcing portion 216, the first reinforcing portion 216 located between the two first extensions 2562, the first extensions 2562 protruding from the upper edge of the first plate-like body 2561, and the first extensions 2562 are provided with first rotational shaft holes through which the rotational shaft 253 passes. The first position limiting member 271 is located at one end of the first extension 2562 away from the first plate-like body 2561. In this way, the stability of the engagement between the first fixing seat 256 and the first reinforcing portion 216 can be improved, and the stability of the charging box 20 when it is in the open state can be improved by ensuring that the first position limiting member 271 and the first fixing seat 256 have sufficient structural strength.

[0207] In some embodiments, the connection and engagement of the upper housing assembly 24, the position limiting mechanism, and the rotation axis mechanism 25 can be described with reference to the following exemplary description. Inside the upper housing assembly 24 are two second support portions 243 spaced apart along the axial direction of the pivot shaft 253, and the two second support portions 243 are provided with second fitting grooves 2431. The second fixed seat 257 includes a second plate-shaped body 2571 and two second extension portions 2572, the upper edge of the second plate-shaped body 2571 facing the upper housing assembly being inserted into the second fitting grooves 2431 of the two second support portions 243, the second extension portions 2572 being connected to the second plate-shaped body 2571 and extending toward the slot 247, the second extension portions 2572 being provided with a second pivot shaft hole through which the pivot shaft 253 passes, and the first position limiting member 271 is installed on the second extension portion 2572. In this way, the strength of the engagement between the rotating shaft mechanism 25 and the upper housing assembly 24 can be improved, and the rotating shaft mechanism 25 can be easily assembled to the upper housing assembly 24.

[0208] Furthermore, inside the upper housing assembly 24, second reinforcing portions 246 are provided at both ends of the slot 247, and the second extension portion 2572 includes a first sub-extension portion 2572a located between the two second reinforcing portions 246, and a second sub-extension portion 2572b connected to the first sub-extension portion 2572a and extending along the axial direction of the rotation axis 253, the second sub-extension portion 2572b being further connected to the second reinforcing portion 246. For example, the second sub-extension portion 2572b can be engaged with the second reinforcing portion 246 by means of fastening members such as screws or rivets, thereby improving the engagement strength and stability between the first fixing seat 256 and the upper housing assembly 24.

[0209] Exemplary, as shown in Figure 22, the charging box 20 may include a permeable member 261 installed in the lower housing assembly 21 and a permanent magnet 262 installed in the upper housing assembly 24. For example, the permeable member 261 is fixed to the inside of the lower housing lining 214 away from the upper housing assembly 24, and the permanent magnet 262 is fixed to the inside of the upper housing lining 242 away from the lower housing assembly 21, thus advantageous in reducing the distance between the permeable member 261 and the permanent magnet 262 after the charging box 20 is closed. A Hall sensor 223 is installed on the main control circuit board 221, that is, the Hall sensor 223 is directly fixed to the main control circuit board 221, and the Hall sensor 223 is installed adjacent to the permeable member 261. Thus, during the process of switching the charging box 20 between an open state and a closed state, the permanent magnet 262 magnetizes the permeable member 261 to different degrees, and the Hall sensor 223 senses the magnetic field of the permeable member 261 to detect the aforementioned open state or closed state. In other words, in the aforementioned closed state, the permeable member 261 concentrates more of the magnetic field generated by the permanent magnet 262 onto the Hall sensor 223, thus improving the reliability of detection by the Hall sensor 223 and reducing the volume of the permanent magnet 262.

[0210] Compared to the above method, in related technologies, the Hall sensor 223 is fixed inside the lower housing lining 214 and connected to the main control circuit board 221 via a conductor. In this technical means, the Hall sensor 223 is directly fixed to the main control circuit board 221, which is advantageous for simplifying the wiring of the charging box 20.

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

[0212] For example, as shown in Figure 23, when viewed from directly above the charging box 20, the two grooves 211 may be mirror-symmetric with respect to the axis of symmetry (for example, shown by the dashed line SA in Figure 23), thereby allowing the two earphones 10 to be neatly housed in the charging box 20. The permeable member 261 may be located on the axis of symmetry SA and away from the rotation axis mechanism 25. This is advantageous in increasing the difference in the magnetic field detected by the Hall sensor 223 on the permeable member 261 in both the open and closed states, thereby improving the reliability of the Hall sensor 223's detection. The axis of symmetry SA may be parallel to the line segment OP1OP2, or it may overlap with the line segment OP1OP2.

[0213] For example, as shown in Figure 22, the orthographic projections of the permeable member 261 and the Hall sensor 223 onto the main control circuit board 221 may overlap at least partially, which is advantageous in reducing the magnetic gap between the permeable member 261 and the Hall sensor 223, thereby concentrating more of the magnetic field generated by the permanent magnet 262 on the Hall sensor 223, particularly in the closed state. The Hall sensor 223 may be installed on the side of the main control circuit board 221 facing the permeable member 261 to reduce the magnetic gap between the permeable member 261 and the Hall sensor 223, and the Hall sensor 223 and the permeable member 261 may be spaced apart in the direction normal to the main control circuit board 221 to reduce the risk of collision between the permeable member 261 and the Hall sensor 223, particularly in critical situations such as the charging box 20 falling.

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

[0215] Illustratively, as shown in Figure 33 (Figure 33 is a cross-sectional view when the charging box 20 is closed), the charging box 20 may include a lower housing assembly 21, an upper housing assembly 24, a main control circuit board 221 and a magnetic attraction structure installed in the lower housing assembly 21, and an upper housing magnet installed in the upper housing assembly 24. The upper housing magnet is the permanent magnet 262, and a Hall sensor 223 may be installed in the lower housing assembly 21, and the Hall sensor 223 may be electrically connected to the main control circuit board 221. The magnetic attraction structure maintains the state in which the earphone 10 is housed in the charging box 20 by magnetic attraction. Based on this, during the closing process of the upper housing assembly 24, the Hall sensor 223 can detect the closure of the upper housing assembly 24 by detecting the proximity of the upper housing magnet, thereby realizing the detection of the charging box 20 being closed. The type of Hall sensor 223 may be a S-pole triggered unipolar Hall switch or a N-pole triggered unipolar Hall switch, and is not specifically limited here. Hereinafter, this application will describe the Hall sensor 223 as a S-pole triggered type. If the Hall sensor 223 is an N-pole triggered type, the principle is the same and will not be described. Those skilled in the art will be able to achieve the same or similar technical effects if the Hall sensor 223 is an N-pole triggered type by adjusting the relevant magnetic pole characteristics, based on the relevant principle for the S-pole triggered type of Hall sensor 223 described below. Therefore, the technical means for the N-pole triggered type of Hall sensor 223 are also covered by this application.

[0216] The Hall sensor 223 has two output states, capable of outputting a high level and a low level. The Hall sensor 223 has a sensing surface, and a magnetic field component perpendicular to the sensing surface of the Hall sensor 223 and directed in the positive direction of the sensing surface acts on the carriers of the Hall sensor 223, deflecting the carriers and thereby changing the output state of the Hall sensor 223. For specific principles, at least prior art can be referenced, and an explanation is omitted here. Taking the S-pole triggered type of Hall sensor 223 as an example, as the S pole of a magnet gradually approaches the Hall sensor 223, the positive magnetic field component generated by the magnet, which is perpendicular to the sensing surface of the Hall sensor 223, gradually increases, and when it increases beyond a certain threshold (for example, when the magnetic field strength is 2mT or 3mT), the Hall sensor 223 converts from a high level to a low level.

[0217] In related technologies, the charging box 20 further includes a magnetic attraction structure that engages with the earphone 10 or an auxiliary magnet that assists in closing the charging box 20. Aside from the magnetic field acting on the Hall sensor when the upper housing magnet is in close proximity, the magnetic fields of components such as the magnetic attraction structure and auxiliary magnet within the charging box 20 also have a certain influence on the Hall sensor. For example, a magnetic attraction structure installed in the lower housing assembly 21 affects the Hall sensor, but because its volume is relatively small, its influence on the Hall sensor 223 can be ignored. In other words, the magnetic field strength acting on the Hall sensor 223 by the magnetic attraction structure cannot reach a threshold that changes the output state of the Hall sensor 223 (i.e., the presence or absence of the magnetic attraction structure does not change the output state of the Hall sensor 223). Thus, the cause of the change in the state of the Hall sensor 223 is mainly due to the proximity of the upper housing magnet. Taking the type of Hall sensor 223 that is S-pole triggered as an example, if the volume of the magnetic attraction structure is small, the output state of the Hall sensor 223 is not changed by the magnetic field of the magnetic attraction structure. When the upper housing assembly 24 closes, the south pole of the upper housing magnet approaches the Hall sensor 223, and the Hall sensor 223 is affected by the magnetic field of the upper housing magnet, causing the magnetic field strength to reach a threshold that changes the output state, and thus the output state changes. For example, the change in the output state of the Hall sensor 223 may be a conversion from a high level to a low level, and the circuit on the main control circuit board may be designed to determine that the charging box 20 will close when it detects that the Hall sensor 223 has output a low level.

[0218] In some embodiments, the magnetic attraction force on the earphone 10 is weak due to the small volume of the magnetic attraction structure, making it unfavorable for housing the earphone 10 in the charging box 20. Therefore, it is necessary to increase the volume of the magnetic attraction structure to strengthen the attraction force on the earphone 10, thereby improving the stability of housing the earphone 10. For example, the first magnetic attraction structure can use a magnet with a diameter of 8 to 15 mm and a thickness of 2 to 4 mm. However, as the volume of the magnetic attraction structure increases, the influence of the magnetic field generated by the magnetic attraction structure on the Hall sensor 223 can no longer be ignored. That is, the magnetic field strength at the Hall sensor 223 of the magnetic attraction structure reaches a threshold that changes the output state of the Hall sensor 223, and the magnetic field of the magnetic attraction structure can change the output state of the Hall sensor 223 when the charging box 20 is not closed. For example, if the upper housing magnet is installed with its south pole facing downwards, the magnetic field component perpendicular to the sensing surface of the magnetic attraction structure Hall sensor 223 will be directed in the positive direction of the sensing surface and will exceed a threshold that changes the output state of the Hall sensor 223. When the upper housing magnet approaches the Hall sensor 223, the direction of the components perpendicular to the sensing surface of the Hall sensor 223 is the same for both the upper housing magnet and the magnetic attraction structure. Therefore, the magnetic field in the Hall sensor 223 is strengthened, but the output state of the Hall sensor 223 cannot be changed, and the box opening / closing detection fails. To solve the above technical problem, the present invention provides the following embodiment.

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

[0220] Similarly, the above embodiment will be illustrated using a unipolar Hall switch with an S-pole trigger as an example. The magnetic field in the Hall sensor 223 with a magnetic attraction structure reaches a threshold that changes the output state of the Hall sensor 223 (compared to the state when the Hall sensor 223 is not interfered with at all by the magnetic field, i.e., the presence or absence of the magnetic attraction structure affects the output state of the Hall sensor 223). For example, when the magnetic field is greater than 3mT, the Hall sensor 223 is in the first state and outputs a low level. In this case, in order to ensure the effectiveness of closing detection, when the upper housing assembly 24 is closed, the upper housing magnet approaches the Hall sensor 223, and the magnetic field in the Hall sensor 223 needs to be changed so that the Hall sensor 223 is in the second state, i.e., outputs a high level. Thus, by setting the circuit on the main control circuit board to determine that the charging box 20 is closed when it detects that the Hall sensor 223 has output a high level, effective closing detection can be achieved. Specifically, when the upper housing assembly 24 is closed relative to the lower housing assembly 21, the magnetic pole of the magnetic attraction structure facing the upper housing assembly 24 is of opposite polarity to the magnetic pole of the upper housing magnet facing the lower housing assembly 21. For example, if the south pole of the magnetic attraction structure faces the upper housing assembly 24, and the angle between the line connecting the magnetic attraction structure and the Hall sensor 223 and the sensing surface of the Hall sensor 223 is less than 45 degrees, the magnetic attraction structure can trigger the Hall sensor 223 to a first state, i.e., a low level, in the positive direction where the component of the Hall sensor 223 perpendicular to the sensing surface is directed toward the sensing surface. The north pole of the upper housing magnet is positioned toward the lower housing assembly 21 when the charging box 20 is closed, and thus, when the charging box 20 is closed, the component of the upper housing magnet perpendicular to the sensing surface of the Hall sensor 223 is located in the negative direction toward the sensing surface.In other words, when the charging box 20 closes, the magnetic fields of the upper housing magnet and the magnetic attraction structure in the Hall sensor 223 cancel each other out. As a result, the component of the combined magnetic field of the magnetic attraction structure and the upper housing magnet in the Hall sensor 223 perpendicular to the sensing surface becomes smaller than the trigger threshold of the Hall sensor 223. Consequently, the component of the combined magnetic field perpendicular to the sensing surface moves in the negative direction of the sensing surface, triggering the Hall sensor 223 to a second state, i.e., a high-level state. The main control circuit board 221 can detect whether or not the charging box 20 is closing by detecting the output state of the Hall sensor 223. With this method, if the Hall sensor 223 is interfered with by the magnetic attraction structure, the charging box 20 can also smoothly detect that the box is closed.

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

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

[0223] In some embodiments, the earphone 10 is further equipped with a first magnetic attraction member that engages with the magnetic attraction structure, the first magnetic attraction member being positioned such that the Hall sensor 223 is in a first state when the earphone 10 is housed in the charging box 20 and the upper housing assembly 24 is open, and the first magnetic attraction member being positioned such that the Hall sensor 223 is in a second state when the earphone 10 is housed in the charging box 20 and the upper housing assembly 24 is closed. When the earphone 10 is placed in the charging box 20, the first magnetic attraction member installed on the earphone 10 also has a different effect on the magnetic field in the Hall sensor 223 than the magnetic attraction structure, and the component of the first magnetic attraction member perpendicular to the sensing surface in the Hall sensor 223 may be directed in the positive direction of the sensing surface or in the negative direction of the sensing surface. However, the first magnetic attraction member is positioned so as to affect only the magnitude of the magnetic field perpendicular to the sensing surface in the Hall sensor 223 and not affect the direction of the total magnetic field at that location. In other words, the placement of the earphones 10 does not affect the output state of the Hall sensor 223. For example, Figure 34(b) is a schematic diagram of the simulation results when the earphones 10 are in the charging box 20. The schematic diagram is created when the magnetic attraction structure uses a permanent magnet with a diameter of 10 mm and a thickness of 2.5 mm, and the upper housing magnet uses a permanent magnet with a diameter of 5 mm and a thickness of 2 mm. When the earphones 10 are in the charging box 20, the magnetic field in the Hall sensor 223 is a magnetic field with the magnetic field direction toward the positive direction of the sensing surface and a magnetic field strength of 7.1 mT, in which case the Hall sensor 223 outputs a low level. After the upper housing assembly 24 is closed, the upper housing magnet reverses the magnetic field in the Hall sensor 223 to a magnetic field with the magnetic field direction toward the negative direction of the sensing surface and a magnetic field strength of 4.5 mT, in which case the Hall sensor 223 outputs a high level.

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

[0225] In some embodiments, a permeable member 261 is further installed within the lower housing assembly 21, and the permeable member 261 can change the magnetic field distribution of the upper housing magnet, thereby concentrating the magnetic field of the upper housing magnet and increasing its influence on the Hall sensor 223. As the upper housing assembly 24 closes, the upper housing magnet gradually approaches the permeable member 261, and the magnetic field of the upper housing magnet magnetizes the permeable member 261, and the permeable member 261 can influence the magnetic field distribution in the Hall sensor 223. Furthermore, the magnetic field generated by the permeable member 261 cancels out the magnetic field effect on the Hall sensor 223 of the magnetic attraction structure, thereby switching the Hall sensor 223 to a second state different from the first state. In the process of switching the charging box 20 between the open state and the closed state, the upper housing magnet magnetizes the permeable member 261 to a different degree, and the Hall sensor 223 senses the magnetic field of the permeable member 261 to detect the aforementioned open state or the aforementioned closed state. In other words, in the aforementioned closed state, the permeable member 261 concentrates more of the magnetic field generated by the upper housing magnet onto the Hall sensor 223, thus improving the reliability of detection by the Hall sensor 223 and reducing the volume of the upper housing magnet. Compared to related technologies in which the Hall sensor 223 is fixed inside the lower housing lining 214 and connected to the main control circuit board 221 via wires, this technical means allows the Hall sensor 223 to be directly fixed to the main control circuit board 221, which is advantageous for simplifying the wiring of the charging box 20.

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

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

[0228] In some embodiments, when the upper housing assembly 24 is closed, the distance in the thickness direction between the upper housing magnet and the permeable member 261 can be adjusted by setting the relative position of the permeable member 261 and the upper housing magnet mounted within the charging box 20. Shortening the distance in the thickness direction between the upper housing magnet and the permeable member 261 is advantageous in reducing the magnetic gap between the upper housing magnet and the permeable member 261, and by improving the ability of the permeable member 261 to concentrate the magnetic field on the upper housing magnet, the magnetic field generated by the permanent magnet 262 is concentrated more on the Hall sensor 223. In this way, when the charging box 20 is closed, the upper housing magnet can have a small volume, and the volume of the charging box 20 can be reduced, while ensuring that the upper housing magnet can change the output state of the Hall sensor 223. Preferably, when the upper housing assembly 24 is closed, the distance between the close surfaces of the permeable member 261 and the upper housing magnet may be set to 5 mm or less. In this way, a certain gap can be provided between the upper housing magnet and the permeable member, so that the side walls of the upper housing assembly and the side walls of the lower housing assembly (i.e., the upper housing lining 242 and the lower housing lining 214 mentioned above) can cover the upper housing magnet and the permeable member 261 at a distance from each other, and they do not need to be exposed between the upper housing assembly 24 and the lower housing assembly 21, and there is no need to separately form holes in the upper housing lining 242 and the lower housing lining 214, which is advantageous in improving the structural strength of the charging box 20 and can make the charging box 20 more aesthetically pleasing. In another embodiment, when the upper housing assembly 24 is in a closed state, by positioning the permeable member 261 so that one end away from the Hall sensor 223 directly abuts the bottom surface of the upper housing magnet, the magnetization of the upper housing magnet with respect to the permeable member 261 can be increased, and the magnetic field of the upper housing magnet can be concentrated more on the Hall sensor 223.

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

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

[0231] The foregoing describes only some embodiments of the present application and does not limit the scope of protection of the present application. All equivalent devices or equivalent process conversions, or direct or indirect applications to other related technical fields, based on the description and drawings of the present application, are similarly included within the scope of patent protection of the present application. [Explanation of symbols]

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

Claims

1. A charging box (20) for earphones (10), The earphone (10) includes a core module (11) and a hook-shaped structure (12) connected to the core module (11). The charging box (20) includes a lower housing assembly (21), the lower housing assembly (21) having a groove (211) for housing the earphone (10), the groove (211) including a first groove region (2111) corresponding to the core module (11) and a second groove region (2112) corresponding to the hook-shaped structure (12), the projections of the first groove region (2111) and the second groove region (2112) into a first reference direction overlap, and the projections of the first groove region (2111) and the second groove region (2112) into a second reference direction perpendicular to the first reference direction overlap, The lower housing assembly (21) includes two of the tracing grooves (211), the second tracing groove regions (2112) of the two tracing grooves (211) are positioned to intersect each other, so that when the two tracing grooves (211) each accommodate the earphones (10), the hook-shaped structures (12) of the two earphones (10) overlap each other. The hook-shaped structure (12) includes a battery housing (123) and an elastic portion connecting the battery housing (123) and the core module (11), and the two second copy groove regions (2112) are positioned such that when the two earphones (10) are housed, the elastic portions of the earphones (10) overlap each other. The charging box (20) for the earphones (10) is characterized in that the elastic portion is installed in an arc shape, and when the elastic portions of two earphones (10) overlap each other, two overlapping points are formed.

2. The charging box (20) according to claim 1, characterized in that the projection of the first portion of the second groove region (2112) and the first groove region (2111) in the first reference direction overlaps, and the projection of the second portion of the second groove region (2112) and the first groove region (2111) in the second reference direction overlaps.

3. The charging box (20) according to claim 2, characterized in that, in the first reference direction, the first portion of the second groove region (2112) is located on the side of the first groove region (2111) away from the edge of the lower housing assembly (21) adjacent to the first groove region (2111).

4. The charging box (20) according to claim 2, characterized in that, in the second reference direction, the second portion of the second groove region (2112) is located on the side of the first groove region (2111) away from the edge of the lower housing assembly (21) adjacent to the first groove region (2111).

5. The charging box (20) according to claim 1, characterized in that the lower housing assembly (21) includes two copy grooves (211), the two copy grooves (211) each housing two earphones (10) to be worn in the left and right ears of the user, and the core modules (11) of the two earphones (10) are spaced apart along a second reference direction.

6. The charging box (20) according to claim 1, characterized in that the two tracing grooves (211) are mirror-image symmetric with respect to the line connecting the two overlapping points as the axis of symmetry, and the direction of the line connecting the two overlapping points is parallel to the first reference direction or the second reference direction.

7. The charging box (20) according to claim 1, characterized in that the two second groove regions (2112) are surrounded by the hook-shaped structure (12), and the regions located between the two overlapping points are integrated with each other.

8. The charging box (20) according to claim 1, characterized in that the two second groove regions (2112) are surrounded by the hook-shaped structure (12), and an island is formed in the region located between the two overlapping points.

9. The lower housing assembly (21) includes a first magnetic attraction structure (231) and a second magnetic attraction structure (232), The charging box (20) according to claim 1, characterized in that the first magnetic attraction structure (231) forms a first magnetic attraction matching pair with a first magnetic attraction member in the earphone (10), and the second magnetic attraction structure (232) forms a second magnetic attraction matching pair with a second magnetic attraction member in the earphone (10).

10. Further including an upper housing assembly (24), The charging box (20) according to claim 1, characterized in that when the charging box (20) is in a closed state, the upper housing assembly (24) engages with the lower housing assembly (21).

11. The charging box (20) is Main control circuit board (221) and A Hall sensor (223) is fixed to the main control circuit board (221), Furthermore, The charging box (20) according to claim 1, characterized in that the Hall sensor (223) is configured to detect whether the upper housing assembly (24) of the charging box (20) is open or closed.

12. The charging box (20) according to claim 1, characterized in that the lower housing assembly (21) is provided with an auxiliary magnet that assists in the magnetic attraction engagement between the upper housing assembly (24) and the lower housing assembly (21), or assists in the engagement between the earphone (10) and the tracing groove (211).

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