Earphone

Abstract

The invention mainly relates to an earphone which comprises a first shell assembly, the first shell assembly is used for forming a containing cavity, the earphone comprises a battery and a circuit board assembly which are arranged in the containing cavity, the battery is arranged in a columnar shape, the circuit board assembly comprises a first hard circuit board, a second hard circuit board and a first flexible circuit board, and the first flexible circuit board is arranged along the axial direction of the battery. The first hard circuit board and the second hard circuit board are arranged at the two ends of the battery in a spaced mode, the first flexible circuit board is connected with the first hard circuit board and the second hard circuit board, and the projection of the first hard circuit board and the projection of the second hard circuit board in the axial direction of the battery are at least partially overlapped with the end face of the battery. And the projection of the first flexible circuit board along the radial direction of the battery is at least partially overlapped with the circumferential surface of the battery. Through the mode, the board surface area of the circuit board assembly can be effectively increased, so that the circuit board assembly can integrate more circuit elements, and meanwhile, the space utilization rate of the battery and the circuit board assembly can be effectively increased.

Description

Technical Field

[0001] This application relates to the technical field of electronic devices, specifically to a pair of headphones. Background Technology

[0002] With the increasing prevalence of electronic devices, they have become indispensable social and entertainment tools in people's daily lives, and people's demands for these devices are also rising. Headphones, for example, are widely used in daily life, working in conjunction with mobile phones, computers, and other terminal devices to provide users with an auditory feast. Headphones can generally be categorized by their working principle into air conduction headphones and bone conduction headphones; by how users wear them, they can be classified as over-ear headphones, clip-on headphones, and in-ear headphones; and by the interaction method between headphones and electronic devices, they can be divided into wired headphones and wireless headphones. With increasing user demands, current clip-on headphones require a large number of circuit components, such as those for wear detection, antenna assembly, and touch control. Therefore, headphones place higher demands on the spatial layout of the circuit board assembly. Summary of the Invention

[0003] This application provides an earphone, which includes a first housing assembly for forming a receiving cavity. The earphone includes a battery and a circuit board assembly disposed within the receiving cavity. The battery is cylindrical. The circuit board assembly includes a first rigid circuit board, a second rigid circuit board, and a first flexible circuit board. Along the axial direction of the battery, the first rigid circuit board and the second rigid circuit board are spaced apart at both ends of the battery. The first flexible circuit board connects the first rigid circuit board and the second rigid circuit board. The projections of the first rigid circuit board and the second rigid circuit board along the axial direction of the battery at least partially overlap with the end face of the battery. The projection of the first flexible circuit board along the radial direction of the battery at least partially overlaps with the circumferential surface of the battery.

[0004] In some embodiments, the ratio of the area of ​​the first rigid circuit board to the total projected area of ​​the first rigid circuit board along the axial direction of the battery is greater than or equal to 80%, and the ratio of the area of ​​the second rigid circuit board to the total projected area of ​​the second rigid circuit board along the axial direction of the battery is greater than or equal to 80%.

[0005] In some embodiments, the main surfaces of the first rigid circuit board and the second rigid circuit board are respectively disposed facing or away from the end face of the adjacent battery; and the angle between the normal direction of the main surface of the first rigid circuit board and the axial direction of the battery and the angle between the normal direction of the main surface of the second rigid circuit board and the axial direction of the battery are respectively less than or equal to 10°.

[0006] In some embodiments, the earphone further includes a microphone and a wear detection electrode disposed in the accommodating cavity. The first flexible circuit board includes a main circuit board extending along the axial direction of the battery and connecting a first rigid circuit board and a second rigid circuit board. The first flexible circuit board also includes a first branch circuit board and a second branch circuit board, with one end of the first branch circuit board and one end of the second branch circuit board located on opposite sides of the main circuit board along the circumference of the battery. The other end of the first branch circuit board is connected to the wear detection electrode, and the other end of the second branch circuit board is connected to the microphone.

[0007] In some embodiments, the first housing assembly is provided with a connection through hole, and the circuit board assembly further includes electrode terminals for supplying power to the battery. The main surface of the main circuit board is disposed opposite to the connection through hole, and the electrode terminals are connected to the main circuit board and exposed through the connection through hole.

[0008] In some embodiments, the inner side of the first housing assembly is provided with a first platform that is planar, and a connecting through hole is provided in the first platform. The earphone further includes a rigid bracket provided in the accommodating cavity. The rigid bracket is provided with a second platform that is planar on the side facing the first platform. Electrode terminals are provided in the second platform. The first platform and the second platform are fitted together, and the main circuit board is at least partially clamped between the first platform and the second platform.

[0009] In some embodiments, the earphone further includes a first antenna portion and a second antenna portion. The first antenna portion is disposed along the axial direction of the battery on the side of the first rigid circuit board opposite to the battery. The second antenna portion is disposed along the axial direction of the battery on the side of the second rigid circuit board opposite to the battery. The circuit board assembly further includes a second flexible circuit board connected to the first rigid circuit board and a third flexible circuit board connected to the second rigid circuit board. The second flexible circuit board is further connected to the first antenna portion, and the third flexible circuit board is further connected to the second antenna portion.

[0010] In some embodiments, the first antenna portion and the second antenna portion further serve as touch electrodes for receiving touch signals.

[0011] In some implementations, when worn, the battery's axis is positioned intersecting the horizontal plane of the human body.

[0012] In some embodiments, the earphone further includes a second housing assembly, an ear hook, and a sound-generating assembly. The sound-generating assembly is disposed within the second housing assembly. The ear hook connects the first housing assembly and the second housing assembly. In the wearing state, the first housing assembly and the second housing assembly form a clamping state on both sides of the auricle, and the second housing assembly is located within the concha cavity. The ear hook has a symmetrical plane arranged along the length direction of the ear hook. The axial direction of the battery intersects the symmetrical plane.

[0013] The beneficial effects of this application are as follows: The circuit board assembly in the earphone of this application includes a first rigid circuit board, a second rigid circuit board, and a first flexible circuit board. The first and second rigid circuit boards are spaced apart at both ends of the battery along the axial direction of the battery. For example, the first rigid circuit board is disposed in the first circuit board receiving area and the second circuit board receiving area, respectively. This arrangement effectively ensures the surface area (i.e., the area of ​​the main surface used to house circuit components) of the first and second rigid circuit boards, allowing the circuit board assembly to integrate more circuit components while effectively improving the space utilization of the battery and circuit board assembly. Furthermore, the projections of the first and second rigid circuit boards along the axial direction of the battery at least partially overlap with the end face of the battery, and the projection of the first flexible circuit board along the radial direction of the battery at least partially overlaps with the peripheral surface of the battery. Based on this, the space utilization of the battery and circuit board assembly can be further improved.

[0014] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this application. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a frontal schematic diagram of the earphones of this application being worn behind the ears of people with large ears or small ears;

[0017] Figure 2 yes Figure 1 A three-dimensional structural diagram of the headphones shown;

[0018] Figure 3 yes Figure 2 A schematic diagram of the headphone's structure along direction A;

[0019] Figure 4 yes Figure 2 A three-dimensional structural diagram of the ear hook and the contact part of the earphone shown;

[0020] Figure 5 yes Figure 4 A schematic diagram of the exploded structure of the ear loop and the contact part shown;

[0021] Figure 6 yes Figure 5 A three-dimensional structural diagram of the embedded object shown;

[0022] Figure 7yes Figure 6 A schematic diagram of the exploded structure of the embedded object shown.

[0023] Figure 8 yes Figure 7 A three-dimensional structural diagram of the rigid support of the embedded body shown.

[0024] Figure 9 yes Figure 5 A three-dimensional structural diagram of the second shell of the earphone shown. Detailed Implementation

[0025] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0026] The reference to "embodiment" in this application means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0027] Combination Figure 1 The user's ear EAR can include physiological sites such as the external auditory canal (E11), concha (E12), cymba concha (E13), triangular fossa (E14), antihelix (E15), scaphoid fossa (E16), helix (E17), and antitragus (E18). While the external auditory canal (101) has a certain depth and extends to the tympanic membrane, for ease of description and in conjunction with... Figure 1 Unless otherwise specified, in this application, the external auditory canal 101 specifically refers to its entrance (i.e., ear hole) away from the tympanic membrane. Furthermore, physiological sites such as the concha E12, cymba conchae E13, and triangular fossa E14 have a certain volume and depth; and the concha E12 is directly connected to the external auditory canal E11, which can be simply regarded as the aforementioned ear hole being located at the bottom of the concha E12.

[0028] Furthermore, the tragus (E19) is located around the external auditory canal of the ear. Compared to the concha (E12), cymba conchae (E13), and triangular fossa (E14), it has a certain depth and volume in three-dimensional space. That is, these parts are concave towards the back of the ear along the direction closer to the user's head, while the tragus (E19) protrudes towards the front of the ear along the direction away from the user's head. Here, "front of the ear" is a concept relative to "back of the ear." The former refers to the side of the ear away from the head, for example... Figure 1 The latter refers to the side of the ear facing the head; both are aimed at the user's ear.

[0029] Furthermore, individual differences may exist among users, resulting in variations in ear shape, size, and other dimensional differences. For ease of description and to minimize (or even eliminate) these individual differences, unless otherwise specified, this specification will primarily use an ear model with a "standard" shape and size as a reference to further describe the wearing method of the acoustic device in different embodiments on this ear model. For example, a simulator containing a head and its (left and right) ears, such as the GRAS 45BCKEMAR, can be manufactured based on ANSI:S3.36, S3.25 and IEC:60318-7 standards as a reference for wearing the acoustic device, thus representing the scenario of most users normally wearing the acoustic device. As an example only, the reference ear may have the following related characteristics: the projection of the auricle in the sagittal plane in the vertical axis direction can be in the range of 49.5mm-74.3mm, and the projection of the auricle in the sagittal plane in the sagittal axis direction can be in the range of 36.6mm-55mm. Therefore, in this application, descriptions such as "worn by the wearer," "in a wearing state," and "under wearing condition" can refer to the acoustic device described in this application being worn on the ear of the aforementioned simulator. Of course, considering individual differences among users, the structure, shape, size, thickness, etc., of one or more parts of the ear (EAR) can vary to some extent. To meet the needs of different users, the acoustic device can be designed differently. These differentiated designs can manifest as the characteristic parameters of one or more structures in the acoustic device (e.g., the sound-emitting part 10, ear hook part 30, etc., hereinafter referred to as such) having different ranges of values, thereby adapting to different ears.

[0030] It should be noted that in medicine, anatomy, and other fields, the human body can be defined by three basic planes: the sagittal plane, the coronal plane, and the horizontal plane; and three basic axes: the sagittal axis, the coronal axis, and the vertical axis. The sagittal plane is a section perpendicular to the ground along the anteroposterior direction of the body, dividing the body into left and right parts. The coronal plane is a section perpendicular to the ground along the left-right direction of the body, dividing the body into anterior and posterior parts. The horizontal plane is a section parallel to the ground along the vertical direction of the body, dividing the body into superior and inferior parts. Correspondingly, the sagittal axis is the axis along the anteroposterior direction of the body and perpendicular to the coronal plane; the coronal axis is the axis along the left-right direction of the body and perpendicular to the sagittal plane; and the vertical axis is the axis along the vertical direction of the body and perpendicular to the horizontal plane. Furthermore, the "front side of the ear" mentioned in this application is a concept relative to "back side of the ear." The former refers to the side of the ear away from the head, while the latter refers to the side of the ear facing the head; both refer to the user's ear. Specifically, by observing the ear of the simulator along the direction of the human coronal axis, one can obtain... Figure 1 The diagram shows the frontal outline of the ear. Based on this, combined with... Figure 1 The X, Y, and Z directions can be simply regarded as the coronal axis, sagittal axis, and vertical axis of the human body, respectively; the XY, XZ, and YZ planes can be simply regarded as the horizontal plane, coronal plane, and sagittal plane of the human body, respectively.

[0031] See Figure 2-4This application discloses an earphone 1, which is an ear clip-on earphone 1. The earphone 1 includes a sound-emitting part 10 inserted into the wearer's concha E12, an abutment part 20 for abutting against the back of the wearer's ear, and an ear hook part 30 connecting the sound-emitting part 10 and the abutment part 20. The sound-emitting part 10 is a sound playback device used to convert electrical signals into sound signals and play them to the wearer. In the wearing state, it is located in the concha E12. Specifically, the abutment part 20 forms a clamping state with the sound-emitting part 10, abutting against the outer wall of the concha E12 and the inner wall of the earphone cavity E12 respectively, so as to clamp the entire earphone 1 onto the user's ear. In some embodiments, the abutment part 20 can be used as a battery 222 compartment for installing a battery 222 or other components. Of course, the abutment part 20 may also not be used as a battery 222 compartment, and the battery 222 may be installed in the sound-emitting part 10. The ear hook 30 is a component that provides clamping force. The two ends of the ear hook 30 are connected to the sound-emitting part 10 and the abutment part 20, respectively. When worn, the ear hook 30 passes around the auricle E17 so that the sound-emitting part 10 and the abutment part 20 are located on both sides of the human ear along the coronal axis of the human body. The sound-emitting part 10 extends to the concha cavity E12 to transmit sound to the ear canal.

[0032] Optionally, such as Figure 4-5 As shown, in some embodiments, the abutment portion 20 includes a first housing 210 assembly 21, wherein the first housing 210 assembly 21 includes a first housing 210, the first housing 210 forming a receiving cavity 2101 with a first opening 2102, and the earphone 1 includes an insert 22 embedded in the receiving cavity 2101 through the first opening 2102. The insert 22 can be a corresponding component assembly on the earphone 1 that needs to be installed in the receiving cavity 2101. In this way, the components that need to be placed in the receiving cavity 2101 are integrated and assembled into the insert 22, and then embedded in the receiving cavity 2101 through the first opening 2102, which can effectively improve the assembly efficiency and assembly convenience of the earphone 1. Furthermore, the first housing 210 assembly 21 also includes a second housing 211, which can cooperate with the first housing 210 to cover the first opening 2102, thereby sealing the accommodating cavity 2101. In this way, the first housing 210 assembly 21 forms a sealed accommodating cavity 2101 through the mutual cooperation of the first housing 210 and the second housing 211. On the one hand, it can effectively provide an effective sealing environment for the insert 22 set in the accommodating cavity 2101, thereby effectively improving the working stability and service life of the insert 22. On the other hand, it can also effectively improve the assembly convenience and assembly efficiency of the earphone 1.

[0033] Optionally, such as Figure 6As shown, in some embodiments, the insert 22 includes a battery 222, a circuit board assembly 220, and a rigid bracket 221. Specifically, in some embodiments, the components to be installed in the receiving cavity 2101 include at least the battery 222 and the circuit board assembly 220. The battery 222 and the circuit board assembly 220 are disposed on the rigid bracket 221 and are relatively fixed to the rigid bracket 221 to form the insert 22. The insert 22 is then embedded in the receiving cavity 2101 through the first opening 2102 to achieve assembly. This effectively improves the assembly efficiency and ease of assembly of components such as the battery 222 and the circuit board assembly 220 into the receiving cavity 2101. Furthermore, the rigid bracket 221 provides rigid support for the circuit board assembly 220 and the battery 222. During assembly, the circuit board assembly 220 and the battery 222 can be spatially arranged on the rigid bracket 221, and then further placed within the receiving cavity 2101 by the rigid bracket 221. This effectively reduces the probability of damage to the circuit board assembly 220 and the battery 222 during assembly, thereby effectively improving the production yield of the earphone 1. It should be noted that in some embodiments, the circuit board assembly 220 is also referred to as the main control circuit board.

[0034] Optionally, such as Figure 6 and Figure 7 As shown, in some embodiments, the circuit board assembly 220 includes a rigid circuit board (e.g., Figure 6 and Figure 7The first rigid circuit board 2201 or the second rigid circuit board 2202 shown is a board-shaped structure of the circuit board assembly 220 for integrated circuit elements. The circuit elements may include main control circuit and sensors, etc. The circuit board assembly 220 may be provided with at least one rigid circuit board to effectively improve the integration of the circuit elements of the earphone 1, thereby ensuring the functional diversity of the earphone 1 while effectively improving the space utilization of the earphone 1. Furthermore, the rigid bracket 221 is provided with a battery housing area 2213 and at least one circuit board housing area. The battery housing area 2213 has a second opening (not shown), and the circuit board housing area has a third opening (not shown). The rigid circuit board and the battery 222 are respectively disposed within the circuit board housing area and the battery housing area 2213 on the rigid bracket 221. This arrangement allows the rigid bracket 221 to provide better physical protection for the rigid circuit board and the battery 222, effectively protecting the circuit components on the rigid circuit board and the battery 222, thereby effectively reducing the probability of damage to the circuit board assembly 220 and the battery 222 during assembly, and thus effectively improving the production yield of the earphone 1. The rigid circuit board and the battery 222 are respectively isolated within the battery housing area 2213 and the circuit board housing area, which also effectively improves the heat dissipation efficiency of the battery 222 and the rigid circuit board, thereby effectively improving the working stability of the battery 222 and the circuit components on the rigid circuit board.

[0035] like Figure 2 and Figure 3 As shown, the ear hook portion 30 has a symmetrical plane aa arranged along the length direction of the ear hook portion 30, and has an x1 direction perpendicular to the symmetrical plane aa. The x1 direction is parallel to the z-axis in the figure. The battery accommodating area 2213 and at least one circuit board accommodating area are spaced apart from each other along the x1 direction. The second opening and the third opening are configured to allow the battery 222 and the rigid circuit board to be placed in the battery accommodating area 2213 and the circuit board accommodating area respectively in the direction perpendicular to the x1 direction. This arrangement can effectively avoid the spatial position of the battery accommodating area 2213 from interfering with the installation process of the rigid circuit board, and also avoid the spatial position of the circuit board accommodating area from interfering with the installation process of the battery 222, thereby effectively improving the assembly efficiency of the battery 222 and the rigid circuit board.

[0036] Preferably, such as Figure 6 and Figure 7As shown, in some embodiments, the circuit board assembly 220 may include two or more rigid circuit boards. The corresponding rigid support 221 forms two or more spaced circuit board receiving areas along the x1 direction. The two or more rigid circuit boards are respectively disposed within their respective circuit board receiving areas, which effectively improves the heat dissipation efficiency of each rigid circuit board, thereby effectively improving the operational stability of the circuit components on each rigid circuit board. For example, in this embodiment, the circuit board assembly 220 includes two rigid circuit boards, namely a first rigid circuit board 2201 and a second rigid circuit board 2202. Correspondingly, the rigid support 221 forms two spaced circuit board receiving areas along the x1 direction, namely a first circuit board receiving area 2211 and a second circuit board receiving area 2212. The first rigid circuit board 2201 and the second rigid circuit board 2202 are respectively disposed in the first circuit board receiving area 2211 and the second circuit board receiving area 2212, which effectively improves the operational stability of the circuit components on the first rigid circuit board 2201 and the circuit components on the second rigid circuit board 2202.

[0037] It should be noted that, unless otherwise specified herein, "rigid circuit board" can refer to either the first rigid circuit board 2201 or the second rigid circuit board 2202. The corresponding circuit board accommodating area can refer to either the first circuit board accommodating area 2211 or the second circuit board accommodating area 2212. In some embodiments, the first rigid circuit board 2201 is also referred to as the first board body, and the second rigid circuit board 2202 is also referred to as the second board body.

[0038] Preferably, such as Figure 7As shown, in some embodiments, the battery 222 is cylindrical, for example, a square or rectangular body with a square or circular bottom surface, or a cylinder with a circular bottom surface. The axial direction z1 of the battery 222 is defined as the extension direction perpendicular to the bottom surface of the cylindrical body. For example, in this embodiment, the battery 222 is cylindrical, and the axial direction z1 is defined as the extension direction perpendicular to the end face 2220 of the battery 222. Furthermore, the angle between the x1 direction and the axial direction z1 of the battery 222 is set to be greater than or equal to 0° and less than or equal to 30°. This makes the x1 direction as parallel as possible to the axial direction z1 of the battery 222, thereby effectively improving the space utilization of the rigid support 221 while effectively reducing the spatial volume of the rigid support 221, and consequently effectively reducing the spatial volume of the insert 22. Furthermore, the rigid circuit board has a planar main surface for mounting circuit elements. The rigid circuit board has a maximum dimension in the extension direction of its main surface. The main surface of the rigid circuit board is configured to face or move away from the end face 2220 of the battery 222. This configuration can effectively reduce the space occupancy rate of the rigid circuit board and the battery 222 in the x1 direction, thereby effectively improving the space utilization rate of the rigid bracket 221 and further effectively reducing the space volume of the insert 22.

[0039] Optionally, such as Figure 7 As shown, in some embodiments, the angle between the main surface of the rigid circuit board and the x1 direction is greater than or equal to 80° and less than or equal to 90°. This arrangement allows the main surface of the rigid circuit board to be arranged as perpendicular to the x1 direction as possible, thereby reducing the space occupancy rate of the rigid circuit board and the battery 222 in the x1 direction, thus effectively improving the space utilization rate of the rigid bracket 221, and further effectively reducing the space volume of the embedding 22.

[0040] Preferably, such as Figure 7 As shown, in some embodiments, the angle between the normal direction z2 of the main surface of the rigid circuit board and the axial direction z1 of the battery 222 is set to be less than or equal to 7 degrees. This makes the normal direction z2 as parallel as possible to the axial direction z1 of the battery 222, effectively reducing the space occupancy rate of the rigid circuit board and the battery 222 in the x1 direction, thereby effectively improving the space utilization rate of the rigid bracket 221 and thus effectively reducing the space volume of the insert 22.

[0041] Optionally, such as Figure 8As shown, in some embodiments, the rigid bracket 221 can be formed by connecting multiple plate-like members. This can effectively reduce the overall mass of the rigid bracket 221 while ensuring its structural strength, thereby effectively reducing the overall mass of the earphone 1. Specifically, in some embodiments, the rigid bracket 221 includes a first end plate 221a, a second end plate 221b, a third end plate 221c, a fourth end plate 221d, a first side plate 221e, a second side plate 221f, and a third side plate 221g. The first end plate 221a, the second end plate 221b, and the third end plate 221c are arranged sequentially at intervals along the x1 direction. The third end plate 221c is located on the side of the second end plate 221b opposite to the first end plate 221a. The first side plate 221e connects the first end plate 221a and the second end plate 221b to form a battery housing between the first end plate 221a and the second end plate 221b. In section 2213, the second side plate 221f connects the second end plate 221b and the third end plate 221c to form a first circuit board receiving area 2211 between the second end plate 221b and the third end plate 221c. The fourth end plate 221d is located on the side of the first end plate 221a away from the second end plate 221b and is spaced apart from the first end plate 221a along the x1 direction. The third side plate 221g connects the fourth end plate 221d and the first end plate 221a to form a second circuit board receiving area 2212. This arrangement can ensure the structural strength of the rigid bracket 221 while effectively reducing the overall weight of the rigid bracket 221.

[0042] Preferably, such as Figure 8 As shown, the rigid support 221 is a one-piece molded part, meaning that the rigid support 221 can be manufactured using a one-piece molding process. Multiple protruding rib structures 2217 can be respectively provided on the sidewalls of the first end plate 221a, the second end plate 221b, the third end plate 221c, and the fourth end plate 221d along the x1 direction. These protruding rib structures 2217 can effectively improve the structural strength of the first end plate 221a, the second end plate 221b, the third end plate 221c, and the fourth end plate 221d. Furthermore, the first end plate 221a, the second end plate 221b, the third end plate 221c, and the fourth end plate 221d are plate-shaped structures. After the integral molding process is completed, the first end plate 221a, the second end plate 221b, the third end plate 221c, and the fourth end plate 221d need to be cooled down. The rib structure 2217 can effectively improve the heat dissipation uniformity of the first end plate 221a, the second end plate 221b, the third end plate 221c, and the fourth end plate 221d, thereby effectively preventing the first end plate 221a, the second end plate 221b, the third end plate 221c, and the fourth end plate 221d from excessive deformation, collapse, and other adverse phenomena during the cooling process, thereby effectively improving the production yield of the rigid bracket 221.

[0043] Preferably, such as Figure 6 , Figure 7 as well as Figure 8 As shown, in some embodiments, the projections of the first end plate 221a and the second end plate 221b along the axial direction z1 of the battery 222 overlap with the end face 2220 of the battery 222. This arrangement effectively reduces the space occupied by the battery 222 on the rigid bracket 221 along the x1 direction, thereby effectively reducing the overall volume of the rigid bracket 221. Furthermore, on a reference section perpendicular to the axial direction z1 of the battery 222, the inner side 2218 of the first side plate 221e is arc-shaped to fit the outer peripheral surface of the battery 222. This allows the inner side 2218 of the first side plate 221e to fit tightly with the outer peripheral side of the battery 222, thereby effectively improving the connection stability between the battery 222 and the first side plate 221e.

[0044] Optionally, such as Figure 6 , Figure 7 as well as Figure 8 As shown, in some embodiments, a first embedding groove 2215 is provided on the inner side of the second side plate 221f, and a second embedding groove 2216 is provided on the inner side of the third side plate 221g. The first rigid circuit board 2201 is embedded in the first embedding groove 2215, and the second rigid circuit board 2202 is embedded in the second embedding groove 2216. This arrangement allows the first rigid circuit board 2201 and the second rigid circuit board 2202 to be connected and fixed to the second side plate 221f and the third side plate 221g respectively through the first embedding groove 2215 and the second embedding groove 2216. This effectively improves the connection stability between the first rigid circuit board 2201 and the second rigid circuit board 2202 and the rigid bracket 221, effectively reduces the probability of the first rigid circuit board 2201 and the second rigid circuit board 2202 vibrating, and thus effectively improves the working stability of the circuit board assembly 220.

[0045] Preferably, in some embodiments, the spacing between the second end plate 221b and the third end plate 221c is greater than the spacing between the first end plate 221a and the fourth end plate 221d. This arrangement allows circuit components with a larger space occupancy rate in the x1 direction to be integrated on the first rigid circuit board 2201, while circuit components with a smaller space occupancy rate in the x1 direction can be integrated on the second rigid circuit board 2202. This effectively improves the space utilization rate of the rigid bracket 221 in the x1 direction and effectively reduces the spatial volume of the rigid bracket 221.

[0046] Preferably, such as Figure 6 and Figure 7As shown, the circuit board assembly 220 also includes a first flexible circuit board 2203 connecting the first rigid circuit board 2201 and the second rigid circuit board 2202. In some embodiments, circuit elements on the first rigid circuit board 2201 can be electrically connected to circuit elements on the second rigid circuit board 2202 via the first flexible circuit board 2203 to achieve information interaction between corresponding circuit elements. The first flexible circuit board 2203 is attached to the side of the first side plate 221e opposite to the battery housing area 2213. This arrangement allows the first side plate 221e to provide rigid support for the first flexible circuit board 2203, effectively reducing the probability of damage to the first flexible circuit board 2203 and thus effectively improving the operational stability of the circuit board assembly 220.

[0047] Preferably, in some embodiments, a grounding point is further provided on the first rigid circuit board 2201 or the second rigid circuit board 2202, wherein the first rigid circuit board 2201 and the second rigid circuit board 2202 are connected to a common ground through the first flexible circuit board 2203. For example, in some embodiments, the first rigid circuit board 2201 is provided with a radio frequency unit for transmitting radio frequency signals (wherein the radio frequency unit is a component for connecting antenna components, see the following description for details), and the second rigid circuit board 2202 is provided with a grounding point.

[0048] It should be noted that in some embodiments, the first flexible circuit board 2203 is also referred to as a flexible connecting board.

[0049] Preferably, such as Figure 6 and Figure 7 As shown, in some embodiments, along the axial direction z1 of the battery 222, the first rigid circuit board 2201 and the second rigid circuit board 2202 are spaced apart at both ends of the battery 222. For example, as described above, the first rigid circuit board 2201 is disposed in the first circuit board receiving area 2211 and the second circuit board receiving area 2212, respectively. This arrangement can effectively ensure the board surface area of ​​the first rigid circuit board 2201 and the second rigid circuit board 2202 (i.e., the area of ​​the main surface used to set the circuit elements, which in some embodiments is also called the area of ​​the rigid circuit board), so that the circuit board assembly 220 can integrate more circuit elements while effectively improving the space utilization of the battery 222 and the circuit board assembly 220.

[0050] Furthermore, the projections of the first rigid circuit board 2201 and the second rigid circuit board 2202 along the axial direction z1 of the battery 222 at least partially overlap with the end face 2220 of the battery 222, and the projection of the first flexible circuit board 2203 along the radial direction of the battery 222 at least partially overlap with the peripheral surface of the battery 222. Based on this, the space utilization of the battery 222 and the circuit board assembly 220 can be further improved.

[0051] Preferably, such as Figure 6 and Figure 7 As shown, in some embodiments, the ratio of the area of ​​the first rigid circuit board 2201 to the total projected area of ​​the first rigid circuit board 2201 along the axial direction z1 of the battery 222 is greater than or equal to 80%, and the ratio of the overlap area of ​​the end face 2220 of the second rigid circuit board 2202 and the battery 222 to the total projected area of ​​the second rigid circuit board 2202 along the axial direction z1 of the battery 222 is greater than or equal to 80%. This arrangement can effectively improve the space utilization rate of the rigid circuit board and the battery 222. Preferably, in some embodiments, the area of ​​the rigid circuit board and the total projected area of ​​the rigid circuit board along the axial direction z1 of the battery 222 can be equal, that is, the ratio of the area of ​​the rigid circuit board to the total projected area of ​​the rigid circuit board along the axial direction z1 of the battery 222 is equal to 1.

[0052] Preferably, such as Figure 6 and Figure 7 As shown, in some embodiments, the angle between the normal direction z2 of the main surface of the first rigid circuit board 2201 and the axial direction z1 of the battery 222, and the angle between the normal direction z2 of the main surface of the second rigid circuit board 2202 and the axial direction z1 of the battery 222, are both less than or equal to 10°. This arrangement ensures that the main surfaces of the first rigid circuit board 2201 and the second rigid circuit board 2202 are as parallel as possible to the two end faces of the battery 222, thereby effectively improving the space utilization among the first rigid circuit board 2201, the second rigid circuit board 2202, and the battery 222. Specifically, the rigid circuit board is plate-shaped, and its main surface is either of its two side surfaces. That is, the size of the main surface of the rigid circuit board is the maximum size of the rigid circuit board in its extension direction. Therefore, arranging the main surface of the rigid circuit board as parallel as possible to the end face 2220 of the battery 222 can effectively improve the space utilization between the rigid circuit board and the battery 222.

[0053] Optionally, such as Figure 6 and Figure 7As shown, in some embodiments, the earphone 1 further includes a microphone 227 and a wear detection electrode 228 disposed in the accommodating cavity 2101. The microphone 227 and the wear detection electrode 228 can be configured to be fixed relative to the rigid bracket 221 and then used as part of the insert 22, and embedded in the accommodating cavity 2101 in the manner described above, which can effectively improve the assembly efficiency of the earphone 1. Specifically, in this embodiment, the first flexible circuit board 2203 further includes a main circuit board 2203a that extends along the axial direction z1 of the battery 222 and connects the first rigid circuit board 2201 and the second rigid circuit board 2202. The first flexible circuit board 2203 also includes a first branch circuit board 2203c, i.e., a second branch circuit board 2203b. One end of the first branch circuit board 2203c and one end of the second branch circuit board 2203b are respectively located on opposite sides of the main circuit board 2203a along the circumference of the battery 222. This arrangement allows the first branch circuit board 2203c and the second branch circuit board 2203b to serve as additional circuit boards for the first flexible circuit board 2203, thereby improving the functionality of the first flexible circuit board 2203. At the same time, the first branch circuit board 2203c and the second branch circuit board 2203b are respectively located in the circumference of the battery 222, which can effectively improve the space utilization between the first flexible circuit board 2203 and the battery 222. Furthermore, the other end of the first branch circuit board 2203c is connected to the wear detection electrode 228, so that the wear detection electrode 228 can be connected to the corresponding circuit element (e.g., wear detection circuit) on the rigid circuit board, thereby realizing the wear detection function of the earphone 1. The other end of the second branch circuit board 2203b is connected to the microphone 227, so that the microphone 227 can be connected to the corresponding circuit element (e.g., microphone 227 processing circuit) on the rigid circuit board, thereby realizing the microphone 227 function of the earphone 1.

[0054] Preferably, such as Figure 6 and Figure 7 As shown, in this embodiment, the first branch circuit board 2203c is part of the first flexible circuit board 2203, and its end facing away from the main circuit board 2203a extends to form a wear detection electrode 228 that can acquire wear detection signals. In this way, a part of the first branch circuit board 2203c can be used as the wear detection electrode 228, which can effectively improve the component reuse rate of the earphone 1, thereby effectively simplifying the overall structure of the earphone 1 and effectively reducing the manufacturing cost of the earphone 1.

[0055] Optionally, such as Figure 5 , Figure 6 , Figure 7 and Figure 9As shown, in some embodiments, the insert 22 further includes an electrode terminal 226 for supplying power to the battery 222. The battery 222 is connected to the electrode terminal 226 so that the battery 222 can be charged by connecting to the charging case of the earphone 1 through the electrode terminal 226. The second housing 211 is provided with a connection through hole 2110, through which the electrode terminal 226 is exposed, so that when the earphone 1 is placed inside the charging case, the electrode terminal 226 can electrically connect the battery 222 to the charging case. The first side plate 221e is positioned opposite to the connecting hole, and the electrode terminal 226 is disposed on the first side plate 221e. This arrangement allows the first side plate 221e to support the electrode terminal 226 within the accommodating cavity 2101, thereby improving the connection stability between the electrode terminal 226 and the second housing 211. This prevents changes in the relative position between the electrode terminal 226 and the second housing 211 due to external factors such as the earphone 1 being dropped, which could lead to poor contact between the electrode terminal 226 and the charging case.

[0056] Preferably, such as Figure 5 , Figure 6 , Figure 7 and Figure 9 As shown, in some embodiments, the inner side of the second housing 211 is provided with a first platform 2111 that is planar, the connecting through hole 2110 is located in the first platform 2111, the side of the first side plate 221e facing the first platform 2111 is provided with a second platform 2214 that is planar and corresponds to the first platform 2111, the electrode terminal 226 is located in the second platform 2214, and the first platform 2111 and the second platform 2214 are fitted together. Specifically, after the electrode terminal 226 passes through the connecting through hole 2110, the peripheral area of ​​the connecting through hole 2110 needs to be sealed to prevent impurities such as sweat, rainwater, or dust from entering the accommodating cavity 2101 along the gap between the connecting through hole 2110 and the electrode terminal 226. Therefore, the first side plate 221e is attached to the first platform 2111 on the inner side of the second housing 211 through the second platform 2214. This can better seal the area between the second housing 211 and the first side plate 221e, effectively improving the sealing performance of the accommodating cavity 2101, and thus effectively improving the working stability of the circuit board assembly 220 and the battery 222. Optionally, in some embodiments, double-sided tape can be used to seal the area between the second housing 211 and the first side plate 221e. For example, after applying double-sided tape to the first platform 2111, the first platform 2111 with double-sided tape is pressed against the second platform 2214 to achieve a seal.

[0057] Optionally, such as Figure 5 , Figure 6 , Figure 7 and Figure 9As shown, in some embodiments, the second housing 211 and the first side plate 221e can also be sealed by dispensing adhesive. In this embodiment, the inner side of the second housing 211 is further provided with an adhesive-containing groove 2112 located in the first platform 2111 and surrounding the connecting through hole 2110. The adhesive-containing groove 2112 is used to fill the sealant so that after the first platform 2111 and the second platform 2214 on the inner side of the second housing 211 are attached, the sealant can overflow and seal the first platform 2111 and the second platform 2214. This effectively improves the sealing convenience between the second housing 211 and the first side plate 221e, and also effectively prevents the sealant from dripping onto the circuit board assembly 220 or the battery 222, so as not to affect the performance of the battery board assembly and the battery 222.

[0058] Specifically, in some embodiments, the main surface of the main circuit board 2203a is disposed opposite to the connecting through hole 2110, the main circuit board 2203a is connected to the electrode terminal 226 to connect to the battery 222, and the main circuit board 2203a is at least partially sandwiched between the first platform 2111 and the second platform 2214. This arrangement can effectively improve the sealing of the accommodating cavity 2101.

[0059] Preferably, such as Figure 6 and Figure 7 As shown, in some embodiments, the embedding body 22 further includes two magnetic attractors 225 disposed on both sides of the electrode terminal 226. When the earphone 1 is inserted into the charging case, the two magnetic attractors 225 can be attracted to the corresponding magnetic attractors 225 in the charging case, so that the electrode terminal 226 can be accurately connected to the charging electrode in the charging case, while also effectively improving the connection stability between the electrode terminal 226 and the charging electrode.

[0060] Optionally, such as Figure 6 and Figure 7 As shown, in some embodiments, two magnetic attractors 225 can be fixed to the first side plate 221e. Specifically, the first side plate 221e has two fixing portions (not shown) spaced apart along the x1 direction on the side opposite to the battery accommodating area 2213. The two magnetic attractors 225 are respectively disposed on the fixing portions to improve the connection stability between the magnetic attractors 225 and the rigid bracket 221. Optionally, in other embodiments, a fixing portion is formed on the first end plate 221a and the second end plate 221b respectively. The two magnetic attractors 225 can also be respectively disposed on the first end plate 221a and the second end plate 221b. Or, in some embodiments, the two fixing portions are respectively formed at the connection between the first side plate 221e and the first end plate 221a and at the connection between the first side plate 221e and the second end plate 221b.

[0061] Optionally, such as Figure 6 and Figure 7As shown, in some embodiments, the earphone 1 further includes an antenna assembly 2230, which is disposed within the accommodating cavity 2101. The antenna assembly 2230 is connected to a radio frequency unit for transmitting radio frequency signals to achieve the transmission or reception of antenna signals. Preferably, in some embodiments, the antenna assembly 2230 is fixed to a rigid bracket 221 as part of the insert 22 and is embedded within the accommodating cavity 2101 in the manner described above, thereby effectively improving the assembly efficiency of the earphone 1. The radio frequency unit can be disposed on a rigid circuit board to effectively improve the space utilization of the earphone 1.

[0062] Preferably, such as Figure 6 and Figure 7 As shown, in some embodiments, the antenna assembly 2230 is spaced from the battery 222 along the axial direction z1 of the battery 222 by a preset distance. This arrangement effectively improves the space utilization between the battery 222 and the antenna assembly 2230, while also effectively reducing the interference of the battery 222 on the antenna assembly 2230, thereby effectively improving the performance of the antenna assembly 2230. Furthermore, the projection of the antenna assembly 2230 along the axial direction z1 of the battery 222 at least partially overlaps with the end face 2220 of the battery 222. This effectively reduces the radial space occupancy of the antenna assembly 2230 on the battery 222, thereby effectively improving the space utilization of both the antenna assembly 2230 and the battery 222 assembly.

[0063] Preferably, such as Figure 6 and Figure 7 As shown, the antenna assembly 2230 includes a first antenna section 223 and a second antenna section 224. The first antenna section 223 and the second antenna section 224 are configured to be connected to the radio frequency unit separately or simultaneously to transmit antenna signals separately or simultaneously. This configuration can effectively improve the working stability and antenna performance of the antenna assembly 2230.

[0064] Preferably, in some embodiments, the first antenna section 223 is connected to the radio frequency port of the radio frequency unit, and the second antenna section 224 is grounded (or connected to a ground point). The radio frequency unit transmits or receives signals (antenna signals) simultaneously through the first antenna section 223 and the second antenna section 224. This arrangement effectively simplifies the circuit structure between the first antenna section 223, the second antenna section 224, and the radio frequency unit. Furthermore, after the second antenna section 224 is grounded, it can also serve as an antenna stub of the first antenna section 223, transmitting or receiving signals simultaneously with the first antenna section 223, thereby further improving the antenna performance of the antenna assembly 2230. Moreover, after the second antenna section 224 is grounded, the current concentrated on the first antenna section 223 can be effectively dispersed, thereby preventing the current generated based on the radio frequency signal from being completely concentrated on the first antenna section 223, and thus effectively reducing the SAR value of the antenna assembly 2230. Furthermore, in this embodiment, the earphone 1 includes a left earphone and a right earphone, and the left and right earphones can be worn interchangeably. When the left and right earphones are swapped, the relative positions of the first antenna section 223 and the second antenna section 224 change along the direction of gravity, thereby affecting the clearance of the first antenna section 223 and / or the second antenna section 224, and consequently affecting the antenna performance of the first antenna section 223 and / or the second antenna section 224. Therefore, by connecting the first antenna section 223 and the second antenna section 224 to the RF port and ground point of the RF unit respectively in the above manner, even when the left and right earphones are swapped, it can be ensured that at least one of the first antenna section 223 or the second antenna section 224 is in a position with a good clearance and continues to work. This effectively ensures the stability of the antenna function of the antenna assembly 2230 while also ensuring the realization of the interchangeability function of the left and right earphones 1.

[0065] Optionally, in some embodiments, the earphone 1 further includes a switching element (not shown), a detection element (not shown), and a control circuit (not shown). The detection element is used to detect the operating parameters of the antenna assembly 2230, such as the current radiation efficiency of the antenna assembly 2230. Alternatively, the detection element can also be used to detect the relative positional relationship between the first antenna section 223 and the second antenna section 224, such as the spatial relative positional relationship between the first antenna section 223 and the second antenna section 224 along the direction of gravity. Based on this, the control circuit is configured to control the switching element to selectively connect one of the first antenna section 223 and the second antenna section 224 to the radio frequency port of the radio frequency unit based on the detection result of the detection element, so that the one with better clearance or better radiation efficiency among the first antenna section 223 and the second antenna section 224 receives or transmits signals, thereby effectively improving the operating stability and antenna performance of the antenna assembly 2230. For example, in this embodiment, the earphone 1 includes a left earphone and a right earphone, and the left and right earphones can be worn interchangeably. When the left and right earphones are swapped, the relative positions of the first antenna section 223 and the second antenna section 224 change. At this time, when the detection result of the detection element shows that the first antenna section 223 is above the second antenna section 224, the clearance of the first antenna section 223 is good. Based on the detection result, the control circuit connects the first antenna section 223 to the port of the radio frequency unit, so that the radio frequency unit transmits or receives antenna signals through the first antenna section 223, thereby effectively improving the antenna performance and working stability of the antenna assembly 2230. Optionally, in some embodiments, the detection element may include a detection component such as a gravity sensor, the switching element may be a component such as a logic switch, and the control circuit may be a circuit with certain logic control capabilities, such as the main control circuit of the earphone 1 or an independent logic processing circuit. The control circuit is connected to both the switching element and the detection element to control the switching element to selectively connect one of the first antenna section 223 and the second antenna section 224 to the radio frequency port of the radio frequency unit based on the detection result of the detection element. Optionally, in some embodiments, the above-mentioned functional logic of the switching element, the detection element, and the control circuit can also be independently completed by the main control circuit of the earphone.

[0066] Preferably, in some embodiments, the antenna structure of the first antenna section 223 is the same as that of the second antenna section 224. When the relative positional relationship between the first antenna section 223 and the second antenna section 224 changes, the first antenna section 223 or the second antenna section 224, which has a better clearance, can still efficiently perform the antenna function, thereby effectively improving the stability of the antenna assembly 2230 and thus effectively ensuring the consistency of the antenna performance of the antenna assembly 2230 when the earphone 1 is switched from one ear to the other.

[0067] Preferably, in some embodiments, the first antenna portion 223 has a first antenna length, and the second antenna portion 224 has a second antenna length, wherein the ratio of the first antenna length to the second antenna length is less than or equal to 1.2 and greater than or equal to 0.8. This arrangement can effectively ensure that the first antenna length and the second antenna length are as equal as possible, thereby improving the similarity between the first antenna portion 223 and the second antenna portion 224, and thus effectively ensuring the consistency of antenna performance of the antenna assembly 2230 when the earphone 1 is switched from one ear to the other.

[0068] Preferably, in some implementations, the switching element, the detection element, and the control circuit can be integrated on the first rigid circuit board 2201 or the second rigid circuit board 2202, which can effectively improve the space utilization of the earphone 1.

[0069] Furthermore, such as Figure 6 and Figure 7 As shown, the first antenna portion 223 and the second antenna portion 224 are spaced apart at both ends of the battery 222 along the axial direction z1 of the battery 222. The projections of the first antenna portion 223 and the second antenna portion 224 along the axial direction z1 of the battery 222 respectively overlap at least partially with the end face 2220 of the battery 222. This arrangement can effectively reduce the radial space occupancy of the first antenna portion 223 and the second antenna portion 224 on the battery 222, thereby effectively improving the space utilization of the antenna assembly 2230 and the battery 222 assembly.

[0070] Preferably, in some embodiments, the projections of the first antenna portion 223 and the second antenna portion 224 in the radial direction along the battery 222 do not overlap with the battery 222. That is, the first antenna portion 223 and the second antenna portion 224 are located at both ends of the battery 222 along the axial direction z1. This arrangement allows the first antenna portion 223 and the second antenna portion 224 to maintain a larger distance from the battery 222, thereby effectively reducing the interference of the battery 222 on the antenna assembly 2230. This improves the clearance of the antenna assembly 2230 and also effectively reduces the radial space occupancy of the first antenna portion 223 and the second antenna portion 224 on the battery 222, thereby effectively improving the space utilization of the antenna assembly 2230 and the battery 222 assembly.

[0071] Preferably, such as Figure 6 and Figure 7As shown, in some embodiments, when worn, the axis z1 of the battery 222 intersects the horizontal plane of the human body. This arrangement minimizes the probability of the first antenna portion 223 and the second antenna portion 224 being blocked by the user's head, thereby effectively improving the clearance of the first antenna portion 223 and the second antenna portion 224, and thus effectively improving the antenna performance of the antenna assembly 2230. Preferably, in some embodiments, when worn, the axis z1 of the battery 222 can be perpendicular to the horizontal plane of the human body, which further improves the antenna performance of the antenna assembly 2230.

[0072] Preferably, such as Figure 6 and Figure 7 As shown, in some embodiments, the ratio of the area of ​​the first antenna portion 223 to the total projected area of ​​the first antenna portion 223 along the axial direction z1 of the battery 222 is greater than or equal to 1.2, and the ratio of the area of ​​the second antenna portion 224 to the total projected area of ​​the second antenna portion 224 along the axial direction z1 of the battery 222 is greater than or equal to 1.2. This arrangement can effectively reduce the space occupancy rate of the first antenna portion 223 and the second antenna portion 224 along the radial direction of the battery 222, thereby effectively improving the space utilization rate among the first antenna portion 223, the second antenna portion 224, and the battery 222.

[0073] Preferably, in some embodiments, the area of ​​the first antenna portion 223 can be equal to the total projected area of ​​the first antenna portion 223 along the axial direction z1 of the battery 222, that is, the ratio of the area of ​​the first antenna portion 223 to the total projected area of ​​the first antenna portion 223 along the axial direction z1 of the battery 222 is equal to 1. The area of ​​the second antenna portion 224 can be equal to the total projected area of ​​the second antenna portion 224 along the axial direction z1 of the battery 222, that is, the ratio of the area of ​​the second antenna portion 224 to the total projected area of ​​the second antenna portion 224 along the axial direction z1 of the battery 222 is equal to 1.

[0074] Preferably, such as Figure 6 and Figure 7As shown, in some embodiments, the first antenna portion 223 and the second antenna portion 224 are respectively arranged in a sheet-like manner. The main surface of the first antenna portion 223 is the maximum extension surface of the first antenna portion 223, and the main surface of the second antenna portion 224 is the maximum extension surface of the second antenna portion 224. The main surfaces of the first antenna portion 223 and the second antenna portion 224 are respectively arranged facing or away from the end face 2220 of the battery 222. This arrangement can effectively reduce the space occupancy rate of the first antenna portion 223 and the second antenna portion 224 along the axial direction z1 of the battery 222. Furthermore, the angle between the normal direction of the main surface of the first antenna portion 223 and the axial direction z1 of the battery 222, and the angle between the normal direction of the main surface of the second antenna portion 224 and the axial direction z1 of the battery 222, are both less than or equal to 10 degrees. This arrangement ensures that the main surfaces of the first antenna portion 223 and the second antenna portion 224 are as parallel as possible to the end face 2220 of the adjacent battery 222, thereby further improving the space utilization among the battery 222, the first antenna portion 223, and the second antenna portion 224. For example, in some embodiments, the angle between the normal direction of the main surface of the first antenna portion 223 and the axial direction z1 of the battery 222, and the angle between the normal direction of the main surface of the second antenna portion 224 and the axial direction z1 of the battery 222, can be set to 0°. Preferably, in some embodiments, the normal direction of the main surface of the first antenna portion 223 and the normal direction of the main surface of the second antenna portion 224 are respectively set parallel to the normal direction z2. In other embodiments, the normal direction of the main surface of the first antenna portion 223 and the normal direction of the main surface of the second antenna portion 224 may also be set at a certain angle to the normal direction z2.

[0075] Preferably, such as Figure 6 , Figure 7 and Figure 8As shown, in some embodiments, the first antenna portion 223 is disposed at a distance z1 along the axial direction z1 of the battery 222 on the side of the first rigid circuit board 2201 opposite to the battery 222, and the second antenna portion 224 is disposed at a distance z1 along the axial direction z1 of the battery 222 on the side of the second rigid circuit board 2202 opposite to the battery 222. This arrangement of the first rigid circuit board 2201 and the second rigid circuit board 2202 can effectively separate the first antenna portion 223 and the second antenna portion 224 from the battery 222, thereby effectively reducing the interference of the battery 222 on the first antenna portion 223 and the second antenna portion 224, and thus effectively improving the working stability and antenna performance of the antenna assembly 2230. Furthermore, in some embodiments, the first antenna portion 223 is disposed on the side of the third end plate 221c away from the first circuit board receiving area 2211, and the second antenna portion 224 is disposed on the side of the fourth end plate 221d away from the second circuit board receiving area 2212. This arrangement can effectively improve the clearance of the first antenna portion 223 and the second antenna portion 224, while further reducing the interference of the battery 222 on the first antenna portion 223 and the second antenna portion 224, thereby effectively improving the working stability and antenna performance of the antenna assembly 2230.

[0076] Optionally, such as Figure 6-7 As shown, in some embodiments, the circuit board assembly 220 further includes a second flexible circuit board 2204 connected to the first rigid circuit board 2201 and a third flexible circuit board 2205 connected to the second rigid circuit board 2202. The second flexible circuit board 2204 is further connected to the first antenna section 223, and the third flexible circuit board 2205 is further connected to the second antenna section 224. The second flexible circuit board 2204 provides circuit traces for the first antenna section 223 so that the first antenna section 223 can be connected to the radio frequency unit on the rigid circuit board. The second flexible circuit board 2204 provides circuit traces for the second antenna section 224 so that the second antenna section 224 can be connected to the radio frequency unit on the rigid circuit board. This arrangement can effectively improve the ease of connection between the first antenna section 223 and the second antenna and the circuit board assembly 220. Preferably, in some embodiments, the end of the second flexible circuit board 2204 away from the first rigid circuit board 2201 extends to form a first antenna portion 223 for receiving or transmitting signals, and the end of the third flexible circuit board 2205 away from the second rigid circuit board 2202 extends to form a second antenna portion 224 for receiving or transmitting signals. This arrangement reuses the second flexible circuit board 2204 and the third flexible circuit board 2205 as the first antenna portion 223 and the second antenna portion 224, respectively, effectively improving the reuse rate of the circuit board assembly 220, thereby effectively simplifying the structure of the earphone 1 and thus effectively saving earphone costs.

[0077] Optionally, in some embodiments, the first antenna section 223 and the second antenna section 224 may be spring clip structures.

[0078] Optionally, in some embodiments, the first antenna section 223 and the second antenna section 224 are further used as touch electrodes for receiving touch signals, which can effectively improve the reuse rate of the first antenna section 223 and the second antenna section 224, thereby effectively simplifying the overall structure of the earphone 1 and thus effectively reducing the cost of the earphone.

[0079] Preferably, such as Figure 2 and Figure 3 As shown, in some embodiments, the sound-generating part 10 includes a sound-generating component (not shown) and a second housing 211 component. The second housing 211 component is used to form a second accommodating space (not shown). The sound-generating component is disposed in the second accommodating space. The ear hook part 30 connects the first housing 210 component 21 and the second housing 211 component. In the wearing state, the first housing 210 component 21 and the second housing 211 component form a clamping state on both sides of the auricle, and the second housing 211 component is located in the concha cavity. The ear hook part 30 has a symmetrical plane aa disposed along the length direction of the ear hook part 30. The axial direction z1 of the battery 222 intersects the symmetrical plane aa. Specifically, in this embodiment, the earphone 1 is an ear clip earphone, and the symmetry plane aa of the ear hook 30 serves as the symmetry plane aa of the earphone 1. When worn, the symmetry plane aa of the earphone 1 intersects with the sagittal plane of the human body, and the angle between the symmetry plane aa of the earphone 1 and the sagittal plane of the human body is less than or equal to 90° and greater than or equal to 80°. This arrangement can effectively ensure that when worn, the axial direction z1 of the battery 222 can intersect with the horizontal plane of the human body, thereby effectively improving the clearance of the antenna assembly 2230 and thus effectively improving the antenna performance of the antenna assembly 2230.

[0080] Furthermore, such as Figure 2 and Figure 3 As shown, the earphone 1 is configured with a symmetrical structure (at least referring to the overall appearance outline of the earphone 1) symmetrically arranged with the symmetrical plane aa of the ear hook 30. Based on this configuration, the earphone 1 can be worn in a way that allows for interchangeable use between the left and right ears, and the earphone 1 can ensure good wearing comfort when worn in either the left or right ear.

[0081] Preferably, such as Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, in some embodiments, the antenna structure of the first antenna section 223 is the same as that of the second antenna section 224. The first antenna section 223 and the second antenna section 224 are symmetrically arranged on both sides of the symmetry plane aa. Based on this, when the earphone 1 is worn on the left or right ear, at least one of the first antenna section 223 and the second antenna section 224 can be guaranteed to have a good clearance, thereby effectively improving the stability of the antenna assembly 2230.

[0082] Optionally, such as Figure 3 As shown, in some embodiments, the maximum dimension d1 of the first housing 210 assembly 21 parallel to the symmetry plane aa is smaller than the maximum dimension d2 perpendicular to the symmetry plane aa. This allows the first housing 210 assembly 21 to be arranged in a long column shape, and the maximum dimension d2 of the first housing 210 assembly 21 is perpendicular to the symmetry plane aa, effectively reducing the space occupied by the first housing 210 assembly 21 in the length direction of the ear hook portion 30, thereby effectively improving the overall space utilization of the earphone 1. Furthermore, the joint seam 213 between the first housing 210 and the second housing 211 intersects the symmetry plane aa. This arrangement can effectively increase the opening area of ​​the first opening 2102 of the accommodating cavity 2101, thereby effectively improving the assembly efficiency of the insert 22 into the accommodating cavity 2101.

[0083] Optionally, such as Figure 5 As shown, in some embodiments, the earphone 1 further includes a soft covering layer, wherein the soft covering layer covers the periphery of the ear hook portion 30 as part of the ear hook portion 30, and the soft covering layer also covers at least a portion of the periphery of the first housing 210 assembly 21. Specifically, the soft covering layer covers the periphery of the first housing 210 and the periphery of the ear hook portion 30, and in the wearing state, the first housing 210 abuts against the back of the ear through the soft covering layer, thereby effectively improving the wearing comfort of the earphone 1.

[0084] Preferably, such as Figure 3 As shown, in some embodiments, when worn, the symmetry plane aa of the earphone 1 intersects the sagittal plane, and the angle between the symmetry plane aa of the earphone 1 and the sagittal plane is greater than or equal to 80° and less than or equal to 90°. This arrangement can effectively ensure that the axial direction z1 of the battery 222 intersects the horizontal plane, thereby effectively improving the clearance of the first antenna section 223 and the second antenna section 224, and thus improving the performance of the antenna assembly 2230.

[0085] Preferably, such as Figure 3 As shown, in some embodiments, when worn, the symmetry plane aa of the earphone 1 is set perpendicular to the sagittal plane, that is, the angle between the symmetry plane aa of the earphone 1 and the sagittal plane is set to 90°, and the symmetry plane aa of the earphone 1 is set parallel to the horizontal plane. This setting can further improve the clearance of the antenna assembly 2230, thereby further improving the performance of the antenna assembly 2230.

[0086] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this application.

Claims

1. An earphone, characterized in that, The earphone includes a first housing assembly for forming a receiving cavity. The earphone includes a battery and a circuit board assembly disposed within the receiving cavity. The battery is cylindrical. The circuit board assembly includes a first rigid circuit board, a second rigid circuit board, and a first flexible circuit board. Along the axial direction of the battery, the first rigid circuit board and the second rigid circuit board are spaced apart at both ends of the battery. The first flexible circuit board connects the first rigid circuit board and the second rigid circuit board. The projections of the first rigid circuit board and the second rigid circuit board along the axial direction of the battery at least partially overlap with the end face of the battery. The projection of the first flexible circuit board along the radial direction of the battery at least partially overlaps with the circumferential surface of the battery.

2. The earphone according to claim 1, characterized in that, The ratio of the area of ​​the first rigid circuit board to the total projected area of ​​the first rigid circuit board along the axial direction of the battery is greater than or equal to 80%, and the ratio of the area of ​​the second rigid circuit board to the total projected area of ​​the second rigid circuit board along the axial direction of the battery is greater than or equal to 80%.

3. The earphone according to claim 1, characterized in that, The main surfaces of the first rigid circuit board and the second rigid circuit board are respectively oriented toward or away from the end face of the adjacent battery; and the angle between the normal direction of the main surface of the first rigid circuit board and the axial direction of the battery and the angle between the normal direction of the main surface of the second rigid circuit board and the axial direction of the battery are respectively less than or equal to 10°.

4. The earphone according to claim 1, characterized in that, The earphone further includes a microphone and a wear detection electrode disposed in the accommodating cavity. The first flexible circuit board includes a main circuit board extending along the axial direction of the battery and connecting the first rigid circuit board and the second rigid circuit board. The first flexible circuit board also includes a first branch circuit board and a second branch circuit board. One end of the first branch circuit board and one end of the second branch circuit board are respectively located on opposite sides of the main circuit board along the circumference of the battery. The other end of the first branch circuit board is connected to the wear detection electrode, and the other end of the second branch circuit board is connected to the microphone.

5. The earphone according to claim 4, characterized in that, The first housing assembly is provided with a connection through hole, and the circuit board assembly further includes electrode terminals for supplying power to the battery. The main surface of the main circuit board is disposed opposite to the connection through hole, and the electrode terminals are connected to the main circuit board and exposed through the connection through hole.

6. The earphone according to claim 5, characterized in that, The inner side of the first housing assembly is provided with a first platform with a planar orientation, and the connecting through hole is provided in the first platform. The earphone further includes a rigid bracket provided in the accommodating cavity. The rigid bracket has a second platform with a planar orientation on the side facing the first platform. The electrode terminal is provided in the second platform. The first platform and the second platform are fitted together. The main circuit board is at least partially clamped between the first platform and the second platform.

7. The earphone according to claim 1, characterized in that, The earphone further includes a first antenna portion and a second antenna portion. The first antenna portion is disposed along the axial direction of the battery on the side of the first rigid circuit board opposite to the battery. The second antenna portion is disposed along the axial direction of the battery on the side of the second rigid circuit board opposite to the battery. The circuit board assembly further includes a second flexible circuit board connected to the first rigid circuit board and a third flexible circuit board connected to the second rigid circuit board. The second flexible circuit board is further connected to the first antenna portion, and the third flexible circuit board is further connected to the second antenna portion.

8. The earphone according to claim 7, characterized in that, The first antenna section and the second antenna section further serve as touch electrodes for receiving touch signals.

9. The earphone according to claim 7, characterized in that, When worn, the battery's axis is positioned to intersect with the horizontal plane of the human body.

10. The earphone according to claim 9, characterized in that, The earphone also includes a second housing assembly, an ear hook, and a sound-generating assembly. The sound-generating assembly is disposed within the second housing assembly. The ear hook connects the first housing assembly and the second housing assembly. In the wearing state, the first housing assembly and the second housing assembly form a clamping state on both sides of the auricle, and the second housing assembly is located within the concha cavity. The ear hook has a symmetrical plane arranged along the length direction of the ear hook. The axial direction of the battery intersects with the symmetrical plane.

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