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 interference of the battery on the antenna assembly can be effectively reduced, so that the performance of the antenna assembly is effectively improved, and meanwhile, the space utilization rate between the antenna assembly and the battery assembly can be effectively improved.

Description

Earphone TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic devices, in particular to an earphone. BACKGROUND

[0002] With the continuous popularity of electronic devices, electronic devices have become an indispensable social and entertainment tool in people's daily life, and people's requirements for electronic devices are also getting higher and higher. Earphones, such electronic devices, have been widely used in people's daily life, and they can be used with terminal devices such as mobile phones and computers to provide users with an auditory feast. According to the working principle of earphones, they can be generally divided into air conduction earphones and bone conduction earphones; according to the way users wear earphones, they can also be generally divided into head-mounted earphones, ear clip earphones and in-ear earphones; and according to the interaction between earphones and electronic devices, they can also be generally divided into wired earphones and wireless earphones. With the increasing demand of users, the current ear clip earphones need to be equipped with a large number of circuit elements and antenna assemblies, and at the same time, they also need to be equipped with larger batteries to meet the power supply requirements. Therefore, how to reduce the space limitation and signal interference of the battery on the antenna assembly is an urgent technical problem to be solved at present.

[0003] SUMMARY

[0004] The present application provides an earphone, which comprises a first shell assembly for forming a containing cavity, a battery and a circuit board assembly arranged in the containing cavity, the battery is 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, along the axial direction of the battery, the first hard circuit board and the second hard circuit board are arranged at both ends of the battery with a spacing, the first flexible circuit board connects the first hard circuit board and the second hard circuit board, the projection of the first hard circuit board and the second hard circuit board along the axial direction of the battery at least partially overlaps the end surface of the battery, and the projection of the first flexible circuit board along the radial direction of the battery at least partially overlaps the peripheral surface of the battery.

[0005] In some embodiments, the ratio of the area of the first hard circuit board to the total projection area of the first hard 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 hard circuit board to the total projection area of the second hard circuit board along the axial direction of the battery is greater than or equal to 80%.

[0006] In some embodiments, the main surface of the first hard circuit board and the main surface of the second hard circuit board are respectively arranged towards or away from the end surface of the adjacent battery; and the included angle between the normal direction of the main surface of the first hard circuit board and the axial direction of the battery and the included angle between the normal direction of the main surface of the second hard circuit board and the axial direction of the battery are respectively less than or equal to 10°.

[0007] In some embodiments, the earphone further comprises a microphone and a wearing detection electrode arranged in the accommodating cavity, the first flexible circuit board comprises 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 further comprises 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 two sides of the main circuit board opposite to each other along the circumferential direction of the battery, the other end of the first branch circuit board is connected to the wearing detection electrode, and the other end of the second branch circuit board is connected to the microphone.

[0008] In some embodiments, the first shell assembly is provided with a connecting through hole, the circuit board assembly further comprises an electrode terminal for supplying power to the battery, a main surface of the main circuit board is arranged opposite to the connecting through hole, and the electrode terminal is connected to the main circuit board and exposed through the connecting through hole.

[0009] In some embodiments, the inner side of the first shell assembly is provided with a first mesa arranged in a plane, the connecting through hole is arranged in the first mesa, the earphone further comprises a rigid support arranged in the accommodating cavity, a side of the rigid support facing the first mesa is provided with a second mesa arranged in a plane, the electrode terminal is arranged in the second mesa, the first mesa and the second mesa are arranged in abutment, and the main circuit board is at least partially clamped between the first mesa and the second mesa.

[0010] In some embodiments, the earphone further comprises a first antenna part and a second antenna part, the first antenna part is arranged on a side of the first rigid circuit board away from the battery along the axial direction of the battery, the second antenna part is arranged on a side of the second rigid circuit board away from the battery along the axial direction of the battery, the circuit board assembly further comprises 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 part, and the third flexible circuit board is further connected to the second antenna part.

[0011] In some embodiments, the first antenna part and the second antenna part further serve as touch electrodes for receiving touch signals.

[0012] In some embodiments, in the wearing state, the axial direction of the battery is arranged to intersect with the horizontal plane of the human body.

[0013] In some embodiments, the earphone further comprises a second shell assembly, an ear hook part, and a sound production assembly, the sound production assembly is arranged in the second shell assembly, the ear hook part connects the first shell assembly and the second shell assembly, in the wearing state, the first shell assembly and the second shell assembly form a clamping state on both sides of the helix, and the second shell assembly is located in the concha cavity, the ear hook has a symmetry plane arranged along the length direction of the ear hook, and the axial direction of the battery is arranged to intersect with the symmetry plane.

[0014] The earphone of the present application has the following advantages: the circuit board assembly in the earphone of the present application comprises a first rigid circuit board, a second rigid circuit board and a first flexible circuit board, wherein the first rigid circuit board and the second rigid circuit board are arranged at two ends of the battery along the axial direction of the battery, for example, the first rigid circuit board is arranged in the first circuit board accommodating area and the second circuit board accommodating area respectively, so that the board area (i.e. the area of the main surface for arranging circuit elements) of the first rigid circuit board and the second rigid circuit board can be effectively ensured, so that the circuit board assembly can integrate more circuit elements while effectively improving the space utilization of the battery and the circuit board assembly. Moreover, the projection of the first rigid circuit board and the second rigid circuit board along the axial direction of the battery at least partially overlaps the end surface of the battery, and the projection of the first flexible circuit board along the radial direction of the battery at least partially overlaps the circumferential surface of the battery, so that the space utilization of the battery and the circuit board assembly can be further improved.

[0015] It should be understood that the general description above and the detailed description below are only exemplary and explanatory, but not limiting the present application.

BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative effort.

[0017] Fig. 1 is a front view of the earphone of the present application worn on the ear of a large-ear or small-ear person;

[0018] Fig. 2 is a three-dimensional structural schematic diagram of the earphone shown in Fig. 1;

[0019] Fig. 3 is an A-direction structural schematic diagram of the earphone shown in Fig. 2;

[0020] Fig. 4 is a three-dimensional structural schematic diagram of the ear hook part and the abutting part of the earphone shown in Fig. 2;

[0021] Fig. 5 is an exploded structural schematic diagram of the ear hook part and the abutting part shown in Fig. 4;

[0022] Fig. 6 is a three-dimensional structural schematic diagram of the embedded body shown in Fig. 5;

[0023] Fig. 7 is an exploded structural schematic diagram of the embedded body shown in Fig. 6;

[0024] Fig. 8 is a three-dimensional structural schematic diagram of the rigid support of the embedded body shown in Fig. 7;

[0025] Fig. 9 is a three-dimensional structural schematic diagram of the second shell of the earphone shown in Fig. 5. DETAILED DESCRIPTION

[0026] The present application is further described in detail by way of reference to the following examples. As indicated, the following examples are illustrative only and are not intended to limit the scope of the present application. Similarly, they are not intended to limit the scope of the application, but rather to provide examples of how the application can be practiced.

[0027] Reference to an "example" in the present application means that a particular feature, structure, or characteristic described in connection with the example can be included in at least one example of the application. The appearances of the phrases "in one example" or "in an example" in various places in the specification are generally not necessarily referring to the same example.

[0028] With reference to FIG. 1, the ear EAR of a user can include the external auditory canal E11, the concha E12, the cymba E13, the triangular fossa E14, the antihelix E15, the scapha E16, the helix E17, and the antitragus E18, among other anatomical features. While the external auditory canal 101 has a certain depth and extends to the tympanic membrane of the ear, for ease of description and with reference to FIG. 1, the external auditory canal 101 specifically refers to the entrance thereof (i.e., the ear opening) that faces away from the tympanic membrane, unless otherwise specified. Further, the concha E12, the cymba E13, the triangular fossa E14, and other anatomical features have a certain volume and depth; and the concha E12 is directly connected to the external auditory canal E11, i.e., the aforementioned ear opening can be simply considered to be located at the bottom of the concha E12.

[0029] Further, the periphery of the external auditory canal of the ear EAR also has the tragus E19, which, in contrast to the concha E12, the cymba E13, the triangular fossa E14, and other anatomical features, has a certain depth and volume in three-dimensional space, i.e., these features are respectively recessed toward the back side of the ear in a direction close to the head of the user, and the tragus E19 is protruded toward the front side of the ear in a direction away from the head of the user. The "front side of the ear" is a concept relative to the "back side of the ear", the former refers to the side of the ear facing away from the head, e.g., FIG. 1, and the latter refers to the side of the ear facing toward the head, both of which are for the ear of the user.

[0030] Further, different users can have individual differences, resulting in different shapes, sizes, and other dimensional differences of the ear. To facilitate description, and to reduce (or even eliminate) individual differences of different users, to facilitate description and understanding, if not specifically stated, the present specification will mainly take an ear model with "standard" shape and size as a reference, further describe the wearing manner of the acoustic device in different embodiments on the ear model. For example, a simulator containing a head and its (left, right) ear, such as GRAS 45BC KEMAR, can be made based on ANSI: S3.36, S3.25 and IEC: 60318-7 standards, for example, as a reference for wearing an acoustic device, to present the scenario of most users normally wearing an acoustic device. Just as an example, the reference ear can have the following relevant features: the size of the projection of the pinna on the vertical axis direction in the sagittal plane can be in the range of 49.5mm-74.3mm, and the size of the projection of the pinna on the sagittal axis direction in the sagittal plane can be in the range of 36.6mm-55mm. Therefore, in the present application, descriptions such as "worn by the wearer", "in the wearing state" and "in the wearing state" can refer to the acoustic device described in the present application worn on the ear of the aforementioned simulator. Of course, considering the individual differences of different users, the structure, shape, size, thickness, etc. of one or more parts of the ear EAR can be different. To meet the needs of different users, the acoustic device can be designed differently, and these different designs can be manifested as the characteristic parameters of one or more structures (such as the sound generating part 10, the ear hanging part 30, etc. below) in the acoustic device can have different ranges of values to adapt to different ears.

[0031] It should be noted that in the field of medicine, anatomy, etc., three basic planes of the human body, i.e., a sagittal plane, a coronal plane and a horizontal plane, and three basic axes of the human body, i.e., a sagittal axis, a coronal axis and a vertical axis, can be defined. The sagittal plane is a plane perpendicular to the ground surface made along the front-to-back direction of the body, which divides the human body into two parts, i.e., a left part and a right part. The coronal plane is a plane perpendicular to the ground surface made along the left-to-right direction of the body, which divides the human body into two parts, i.e., a front part and a back part. The horizontal plane is a plane parallel to the ground surface made along the up-to-down direction of the body, which divides the human body into two parts, i.e., an upper part and a lower part. Correspondingly, the sagittal axis is an axis perpendicular to the coronal plane along the front-to-back direction of the body, the coronal axis is an axis perpendicular to the sagittal plane along the left-to-right direction of the body, and the vertical axis is an axis perpendicular to the horizontal plane along the up-to-down direction of the body. Further, the "front side of the ear" is a concept relative to the "back side of the ear", the former refers to the side of the ear away from the head, and the latter refers to the side of the ear towards the head, both of which are for the ear of the user. When the ear of the simulator is observed along the direction in which the coronal axis of the human body is located, the front side profile of the ear shown in FIG. 1 can be obtained. Based on this, in combination with FIG. 1, the three directions X, Y and Z can be simply regarded as the coronal axis of the human body, the sagittal axis of the human body and the vertical axis of the human body, respectively; and the three planes XY, XZ and YZ can be simply regarded as the horizontal plane of the human body, the coronal plane of the human body and the sagittal plane of the human body, respectively.

[0032] Referring to FIGS. 2-4, the present application provides an earphone 1, which is an ear clip type earphone 1. The earphone 1 includes a sound generating portion 10 inserted into the concha cavity E12 of a wearer, an abutting portion 20 for abutting against the back of the wearer, and an ear hook portion 30 connected to the sound generating portion 10 and the abutting portion 20. The sound generating portion 10 is a sound playing device for converting electrical signals into sound signals and playing them to the wearer, and is located in the concha cavity E12 in the wearing state. Specifically, the abutting portion 20 and the sound generating portion 10 form a clamping state to respectively abut against the outer wall of the concha cavity E12 and the inner wall of the concha cavity E12, so as to clamp the entire earphone 1 on the ear EAR of the user. In some embodiments, the abutting portion 20 can be used as a battery 222 compartment to install the battery 222 or other components. Of course, the abutting portion 20 can also not be used as a battery 222 compartment, and the battery 222 can be installed to the sound generating portion 10. The ear hook portion 30 is a component for providing clamping force, and the two ends of the ear hook portion 30 are respectively connected to the sound generating portion 10 and the abutting portion 20. In the wearing state, the ear hook portion 30 passes around the helix E17 so that the sound generating portion 10 and the abutting portion 20 are located on both sides of the human ear along the coronal axis of the human body, and the sound generating portion 10 extends into the concha cavity E12 to transmit sound to the ear canal.

[0033] Optionally, as shown in Figures 4-5, 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, wherein 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.

[0034] Optionally, as shown in FIG6, 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.

[0035] Optionally, as shown in FIG. 6 and FIG. 7, in some embodiments, the circuit board assembly 220 comprises a rigid circuit board (e.g., the first rigid circuit board 2201 or the second rigid circuit board 2202 shown in FIG. 6 and FIG. 7), which is a plate-like structure of the circuit board assembly 220 for integrating circuit elements, which can include master control circuit and sensor elements, etc., wherein the circuit board assembly 220 can be provided with at least one rigid circuit board to effectively improve the integration of the circuit elements of the earphone 1, thereby effectively improving the space utilization of the earphone 1 while ensuring the functional diversity of the earphone 1. Further, the rigid support 221 is provided with a battery accommodating area 2213 and at least one circuit board accommodating area, the battery accommodating area 2213 has a second opening (not marked in the figure), and the circuit board accommodating area has a third opening (not marked in the figure), the rigid circuit board and the battery 222 are respectively arranged in the circuit board accommodating area and the battery accommodating area 2213 on the rigid support 221, and such arrangement enables the rigid support 221 to provide better physical protection for the rigid circuit board and the battery 222, thereby effectively protecting the circuit elements on the rigid circuit board and the battery 222, effectively reducing the probability of damage to the circuit board assembly 220 and the battery 222 during assembly, and further effectively improving the production yield of the earphone 1. Wherein the rigid circuit board and the battery 222 are respectively arranged in isolation in the battery accommodating area 2213 and the circuit board accommodating area, which can also effectively improve 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 elements on the rigid circuit board.

[0036] As shown in FIG. 2 and FIG. 3, the ear hook portion 30 has a symmetry plane a-a arranged along the length direction of the ear hook portion 30, and has an x1 direction perpendicular to the symmetry plane a-a, the x1 direction is parallel to the z axis in the figure, the battery accommodating area 2213 and the at least one circuit board accommodating area are arranged in the x1 direction and spaced apart from each other, the second opening and the third opening are arranged 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 vertical direction of the x1 direction, such arrangement can effectively avoid the spatial position of the battery accommodating area 2213 interfering with the installation process of the rigid circuit board, and avoid the spatial position of the circuit board accommodating area interfering with the installation process of the battery 222, thereby effectively improving the assembly efficiency of the battery 222 and the rigid circuit board.

[0037] Preferably, as shown in FIG. 6 and FIG. 7, in some embodiments, the circuit board assembly 220 can include two or more rigid circuit boards, and the corresponding rigid support 221 is formed with two or more circuit board accommodating regions arranged at intervals along the x1 direction, wherein the two or more rigid circuit boards are arranged in the corresponding circuit board accommodating regions respectively, so as to effectively improve the heat dissipation efficiency of each rigid circuit board, thereby effectively improving the working stability of the circuit elements on each rigid circuit board. For example, in the present embodiment, the circuit board assembly 220 includes two rigid circuit boards, which are a first rigid circuit board 2201 and a second rigid circuit board 2202 respectively, and correspondingly, the rigid support 221 is formed with two circuit board accommodating regions arranged at intervals along the x1 direction, which are a first circuit board accommodating region 2211 and a second circuit board accommodating region 2212 respectively, and the first rigid circuit board 2201 and the second rigid circuit board 2202 are arranged in the first circuit board accommodating region 2211 and the second circuit board accommodating region 2212 respectively, so as to effectively improve the working stability of the circuit elements on the first rigid circuit board 2201 and the circuit elements on the second rigid circuit board 2202.

[0038] It should be noted that, unless otherwise specified herein, the rigid circuit board can refer to any one of the first rigid circuit board 2201 or the second rigid circuit board 2202. The corresponding circuit board accommodating region can refer to any one of the first circuit board accommodating region 2211 or the second circuit board accommodating region 2212. In some embodiments, the first rigid circuit board 2201 is also referred to as a first board body, and the second rigid circuit board 2202 is also referred to as a second board body.

[0039] Preferably, as shown in FIG. 7, in some embodiments, the battery 222 is arranged in a columnar shape, for example, a square columnar body with a square bottom surface or a rectangular columnar body with a rectangular bottom surface, or a cylindrical body with a circular bottom surface, and so on, wherein the axial direction z1 of the battery 222 is defined as the direction of extension perpendicular to the bottom surface of the columnar body, for example, in the present embodiment, the battery 222 is arranged in a cylindrical body, and the axial direction z1 is defined as the direction of extension perpendicular to the end surface 2220 of the battery 222. Further, the included angle between the x1 direction and the axial direction z1 of the battery 222 is arranged to be greater than or equal to 0° and less than or equal to 30°, so that the x1 direction and the axial direction z1 of the battery 222 are arranged as parallel as possible, thereby effectively improving the space utilization of the hard support 221 while effectively reducing the space volume of the hard support 221, and further effectively reducing the space volume of the embedding body 22. Further, the hard circuit board has a planar main surface for arranging circuit elements, and the hard circuit board has a maximum dimension in the extension direction of the main surface thereof, wherein the main surface of the hard circuit board is arranged to face or be away from the end surface 2220 of the battery 222, so that the space occupation of the hard circuit board and the battery 222 in the x1 direction is effectively reduced, thereby effectively improving the space utilization of the hard support 221, and further effectively reducing the space volume of the embedding body 22.

[0040] Optionally, as shown in FIG. 7, in some embodiments, the included angle between the main surface of the hard circuit board and the x1 direction is greater than or equal to 80° and less than or equal to 90°, so that the main surface of the hard circuit board is arranged as perpendicular as possible to the x1 direction, thereby reducing the space occupation of the hard circuit board and the battery 222 in the x1 direction, thereby effectively improving the space utilization of the hard support 221, and further effectively reducing the space volume of the embedding body 22.

[0041] Preferably, as shown in FIG. 7, in some embodiments, the included angle between the normal direction z2 of the main surface of the hard circuit board and the axial direction z1 of the battery 222 is arranged to be less than or equal to 7 degrees, so that the normal direction z2 and the axial direction z1 of the battery 222 are arranged as parallel as possible, thereby effectively reducing the space occupation of the hard circuit board and the battery 222 in the x1 direction, thereby effectively improving the space utilization of the hard support 221, and further effectively reducing the space volume of the embedding body 22.

[0042] Optionally, as shown in FIG. 8, in some embodiments, the hard support 221 can be connected by a plurality of plates, so that the overall mass of the hard support 221 can be effectively reduced while ensuring the structural strength of the hard support 221, thereby effectively reducing the overall mass of the earphone 1. Specifically, in some embodiments, the hard support 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 sequentially and spaced apart along the x1 direction. The third end plate 221c is located on the side of the second end plate 221b away from 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 accommodation area 2213 between the first end plate 221a and the second end plate 221b. The second side plate 221f connects the second end plate 221b and the third end plate 221c to form a first circuit board accommodation 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 accommodation area 2212. Such arrangement can effectively reduce the overall mass of the hard support 221 while ensuring the structural strength of the hard support 221.

[0043] Preferably, as shown in FIG. 8, the hard support 221 is an integral molding, that is, the hard support 221 can be made by an integral molding process. The side walls 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 can be provided with a plurality of rib structures 2217, respectively. Such 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. Moreover, the first end plate 221a, the second end plate 221b, the third end plate 221c, and the fourth end plate 221d are plate 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 and cooled down. The rib structures 2217 can effectively improve the uniformity of heat dissipation 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 being excessively deformed or collapsed during the cooling process, thereby effectively improving the production yield of the hard support 221.

[0044] Preferably, as shown in FIG. 6, FIG. 7 and FIG. 8, 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 respectively overlap the end surface 2220 of the battery 222, which can effectively reduce the space occupancy of the battery 222 along the x1 direction of the hard support 221, thereby effectively reducing the overall volume of the hard support 221. Further, on the reference section perpendicular to the axial direction z1 of the battery 222, the inner side 2218 of the first side plate 221e is arranged in an arc shape that fits the outer peripheral surface of the battery 222, so that the inner side 2218 of the first side plate 221e can be closely fitted with the outer peripheral surface of the battery 222, thereby effectively improving the connection stability of the battery 222 and the first side plate 221e.

[0045] Optionally, as shown in FIG. 6, FIG. 7 and FIG. 8, in some embodiments, the inner side of the second side plate 221f is provided with a first embedding groove 2215, the inner side of the third side plate 221g is provided with a second embedding groove 2216, the first hard circuit board 2201 is embedded in the first embedding groove 2215, and the second hard circuit board 2202 is embedded in the second embedding groove 2216, which makes the first hard circuit board 2201 and the second hard circuit board 2202 respectively connected and fixed with the second side plate 221f and the third side plate 221g through the first embedding groove 2215 and the second embedding groove 2216, thereby effectively improving the connection stability of the first hard circuit board 2201 and the second hard circuit board 2202 with the hard support 221, effectively reducing the probability of the first hard circuit board 2201 and the second hard circuit board 2202 shaking, and further effectively improving the working stability of the circuit board assembly 220.

[0046] Preferably, in some embodiments, the spacing distance between the second end plate 221b and the third end plate 221c is greater than the spacing distance between the first end plate 221a and the fourth end plate 221d, which makes the circuit elements with larger space occupancy along the x1 direction can be integrated on the first hard circuit board 2201, and the circuit elements with smaller space occupancy along the x1 direction can be integrated on the second hard circuit board 2202, thereby effectively improving the space utilization of the hard support 221 along the x1 direction, and effectively reducing the space volume of the hard support 221.

[0047] Preferably, as shown in FIG. 6 and FIG. 7, the circuit board assembly 220 further comprises a first flexible circuit board 2203 connecting the first rigid circuit board 2201 and the second rigid circuit board 2202. In some embodiments, the circuit elements on the first rigid circuit board 2201 can be electrically connected to the circuit elements on the second rigid circuit board 2202 through the first flexible circuit board 2203 to realize information interaction between the corresponding circuit elements, etc. Wherein, the first flexible circuit board 2203 is attached to the side of the first side plate 221e away from the battery accommodation area 2213. Such arrangement enables 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 working stability of the circuit board assembly 220.

[0048] Preferably, in some embodiments, the first rigid circuit board 2201 or the second rigid circuit board 2202 is further provided with a grounding point, and the first rigid circuit board 2201 and the second rigid circuit board 2202 are connected in common 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 (which is a component for connecting an antenna assembly, see the following content for details) for transmitting radio frequency signals, and the second rigid circuit board 2202 is provided with a grounding point.

[0049] It should be noted that, in some embodiments, the first flexible circuit board 2203 is also called a flexible connecting plate.

[0050] Preferably, as shown in FIG. 6 and FIG. 7, 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 arranged at the two ends of the battery 222, for example, as described above, the first rigid circuit board 2201 is arranged in the first circuit board accommodation area 2211 and the second circuit board accommodation area 2212, respectively. Such arrangement can effectively ensure the area of the board surface (i.e. the area of the main surface for arranging circuit elements, in some embodiments, also referred to as the area of the rigid circuit board) of the first rigid circuit board 2201 and the second rigid circuit board 2202, 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.

[0051] Further, the projection 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 overlaps the end surface 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 overlaps 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.

[0052] Preferably, as shown in FIG. 6 and FIG. 7, in some embodiments, the ratio of the area of the first hard circuit board 2201 to the total projected area of the first hard circuit board 2201 along the axial direction z1 of the battery 222 is greater than or equal to 80%, and the ratio of the overlapping area of the second hard circuit board 2202 and the end surface 2220 of the battery 222 to the total projected area of the second hard circuit board 2202 along the axial direction z1 of the battery 222 is greater than or equal to 80%. In this way, the space utilization of the hard circuit board and the battery 222 can be effectively improved. Preferably, in some embodiments, the area of the hard circuit board can be equal to the total projected area of the hard circuit board along the axial direction z1 of the battery 222, i.e., the ratio of the area of the hard circuit board to the total projected area of the hard circuit board along the axial direction z1 of the battery 222 is equal to 1.

[0053] Preferably, as shown in FIG. 6 and FIG. 7, in some embodiments, the angle between the normal direction z2 of the main surface of the first hard 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 hard circuit board 2202 and the axial direction z1 of the battery 222 are both less than or equal to 10°. In this way, the main surface of the first hard circuit board 2201 and the main surface of the second hard circuit board 2202 are arranged as parallel to the two end surfaces of the battery 222 as much as possible, thereby effectively improving the space utilization among the first hard circuit board 2201, the second hard circuit board 2202 and the battery 222. Specifically, the hard circuit board is arranged in a plate shape, and the main surface thereof is any one of the two side surfaces, i.e., the size of the main surface of the hard circuit board is the maximum size of the hard circuit board in the extension direction thereof. Therefore, arranging the main surface of the hard circuit board and the end surface 2220 of the battery 222 as parallel as much as possible can effectively improve the space utilization between the hard circuit board and the battery 222.

[0054] Optionally, as shown in FIG. 6 and FIG. 7, in some embodiments, the earphone 1 further comprises a microphone 227 and a wearing detection electrode 228 arranged in the accommodating cavity 2101, wherein the microphone 227 and the wearing detection electrode 228 can be arranged as part of the embedded body 22 after being fixed opposite to the hard support 221, 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 the present embodiment, the first flexible circuit board 2203 further comprises a main circuit board 2203a extending along the axial direction z1 of the battery 222 and connecting the first hard circuit board 2201 and the second hard circuit board 2202, and the first flexible circuit board 2203 further comprises a first branch circuit board 2203c and a second branch circuit board 2203b, wherein one end of the first branch circuit board 2203c and one end of the second branch circuit board 2203b are located on two sides of the main circuit board 2203a opposite to each other along the circumferential direction of the battery 222, so that the first branch circuit board 2203c and the second branch circuit board 2203b can serve as additional circuit boards of the first flexible circuit board 2203 to improve the functionality of the first flexible circuit board 2203, and at the same time, the first branch circuit board 2203c and the second branch circuit board 2203b are located along the circumferential direction of the battery 222, which can effectively improve the space utilization between the first flexible circuit board 2203 and the battery 222. Further, the other end of the first branch circuit board 2203c is connected to the wearing detection electrode 228, so that the wearing detection electrode 228 can be connected to the corresponding circuit element (such as the wearing detection circuit) on the hard circuit board, thereby realizing the wearing 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 (such as the microphone 227 processing circuit) on the hard circuit board, thereby realizing the microphone 227 function of the earphone 1.

[0055] Preferably, as shown in FIG. 6 and FIG. 7, in the present embodiment, the first branch circuit board 2203c, as part of the first flexible circuit board 2203, extends from one end away from the main circuit board 2203a to form a wearing detection electrode 228 capable of obtaining a wearing detection signal, so that part of the first branch circuit board 2203c can be used as the wearing detection electrode 228, which can effectively improve the part reuse rate of the earphone 1, and further effectively simplify the overall structure of the earphone 1, thereby effectively reducing the manufacturing cost of the earphone 1.

[0056] Optionally, as shown in FIG. 5, FIG. 6, FIG. 7 and FIG. 9, in some embodiments, the embedded body 22 further comprises 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 connected to the charging box of the earphone 1 through the electrode terminal 226, thereby realizing the charging of the battery 222. Among them, the second shell 211 is provided with a connecting through hole 2110, and the electrode terminal 226 is exposed through the connecting through hole 2110, so that when the earphone 1 is accommodated in the charging box, the electrode terminal 226 can electrically connect the battery 222 with the charging box. Among them, the first side plate 221e is arranged opposite to the connecting hole, and the electrode terminal 226 is arranged on the first side plate 221e. In this way, the first side plate 221e can support the electrode terminal 226 in the accommodation cavity 2101, thereby improving the connection stability of the electrode terminal 226 and the second shell 211, preventing the relative position between the electrode terminal 226 and the second shell 211 from changing due to external factors such as falling of the earphone 1, and causing poor contact between the electrode terminal 226 and the charging box.

[0057] Preferably, as shown in FIG. 5, FIG. 6, FIG. 7 and FIG. 9, in some embodiments, the inner side of the second shell 211 is provided with a first flat surface 2111 arranged in a plane, the connecting through hole 2110 is located in the first flat surface 2111, and the side of the first side plate 221e facing the first flat surface 2111 is provided with a second flat surface 2214 corresponding to the first flat surface 2111 and arranged in a plane, and the electrode terminal 226 is located in the second flat surface 2214. The first flat surface 2111 and the second flat surface 2214 are arranged in close contact. 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 accommodation cavity 2101 through the gap between the connecting through hole 2110 and the electrode terminal 226. Therefore, the first side plate 221e is in close contact with the first flat surface 2111 of the inner side of the second shell 211 through the second flat surface 2214, which can better seal the area between the second shell 211 and the first side plate 221e, effectively improve the sealing performance of the accommodation cavity 2101, and further effectively improve the working stability of the circuit board assembly 220 and the battery 222. Optionally, in some embodiments, double-sided adhesive tape can be used to seal the area between the second shell 211 and the first side plate 221e, for example, the double-sided adhesive tape is pasted on the first flat surface 2111, and then the first flat surface 2111 with the double-sided adhesive tape is pressed against the second flat surface 2214, thereby realizing sealing.

[0058] Optionally, as shown in FIG. 5, FIG. 6, FIG. 7 and FIG. 9, in some embodiments, the second shell 211 and the first side plate 221e can also be sealed by dispensing, wherein the inner side of the second shell 211 is further provided with a glue containing groove 2112 located in the first mesa 2111 and surrounding the connecting through hole 2110, wherein the glue containing groove 2112 is used to fill the sealant, so that after the first mesa 2111 and the second mesa 2214 of the inner side of the second shell 211 are adhered, the sealant can overflow and seal the first mesa 2111 and the second mesa 2214, effectively improving the sealing convenience between the second shell 211 and the first side plate 221e, while effectively preventing the sealant from dropping onto the circuit board assembly 220 or the battery 222 to affect the performance of the battery 222 and the circuit board assembly.

[0059] Specifically, in some embodiments, the main surface of the main circuit board 2203a is arranged opposite to the connecting through hole 2110, the main circuit board 2203a is connected with the electrode terminal 226 to connect with the battery 222, and the main circuit board 2203a is at least partially clamped between the first mesa 2111 and the second mesa 2214, which can effectively improve the sealing performance of the accommodating cavity 2101.

[0060] Preferably, as shown in FIG. 6 and FIG. 7, in some embodiments, the embedded body 22 further comprises two magnetic attraction members 225 arranged on both sides of the electrode terminal 226, wherein when the earphone 1 is loaded into the charging box, the two magnetic attraction members 225 can be attracted to the corresponding magnetic attraction members 225 in the charging box, so that the electrode terminal 226 can be accurately connected with the charging electrode in the charging box, while effectively improving the connection stability of the electrode terminal 226 and the charging electrode.

[0061] Optionally, as shown in FIG. 6 and FIG. 7, in some embodiments, the two magnetic attraction members 225 can be fixed on the first side plate 221e, specifically, the side of the first side plate 221e away from the battery accommodating area 2213 is provided with two fixing portions (not labeled in the figure) arranged at intervals along the x1 direction, and the two magnetic attraction members 225 are arranged on the fixing portions respectively to improve the connection stability of the magnetic attraction members 225 and the hard support 221. Optionally, in other embodiments, one fixing portion is formed on the first end plate 221a and the second end plate 221b respectively, and the two magnetic attraction members 225 can also be arranged on the first end plate 221a and the second end plate 221b respectively, or in some embodiments, two fixing portions are formed at the connection between the first side plate 221e and the first end plate 221a and the connection between the first side plate 221e and the second end plate 221b respectively.

[0062] Optionally, as shown in FIG. 6 and FIG. 7, in some embodiments, the earphone 1 further comprises an antenna assembly 2230, which is arranged in the accommodating cavity 2101, and is connected with a radio frequency unit for transmitting radio frequency signals to realize sending or receiving antenna signals. Preferably, in some embodiments, the antenna assembly 2230 is fixed with the hard support 221 to serve as a part of the embedded body 22, and is embedded in 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 arranged on the hard circuit board to effectively improve the space utilization of the earphone 1.

[0063] Preferably, as shown in FIG. 6 and FIG. 7, in some embodiments, the antenna assembly 2230 is spaced apart from the battery 222 along the axial direction z1 of the battery 222 at a predetermined interval distance, which can effectively improve the space utilization between the battery 222 and the antenna assembly 2230, and effectively reduce the interference of the battery 222 on the antenna assembly 2230, thereby effectively improving the performance of the antenna assembly 2230. Further, the projection of the antenna assembly 2230 along the axial direction z1 of the battery 222 at least partially overlaps the end surface 2220 of the battery 222, which can effectively reduce the radial space occupation of the antenna assembly 2230 on the battery 222, thereby effectively improving the space utilization of the antenna assembly 2230 and the battery 222.

[0064] Preferably, as shown in FIG. 6 and FIG. 7, the antenna assembly 2230 comprises a first antenna part 223 and a second antenna part 224, wherein the first antenna part 223 and the second antenna part 224 are arranged to be respectively or simultaneously connected with the radio frequency unit to respectively or simultaneously send antenna signals, which can effectively improve the working stability and antenna performance of the antenna assembly 2230.

[0065] Preferably, in some embodiments, the first antenna part 223 is connected with a radio frequency port of the radio frequency unit, and the second antenna part 224 is grounded (or connected with a grounding point), and the radio frequency unit transmits or receives signals (antenna signals) through the first antenna part 223 and the second antenna part 224 at the same time. In this way, the circuit structure among the first antenna part 223, the second antenna part 224 and the radio frequency unit can be effectively simplified, and the second antenna part 224 can also serve as an antenna branch of the first antenna part 223 after being grounded, and transmit or receive signals at the same time with the first antenna part 223, thereby further improving the antenna performance of the antenna assembly 2230. In addition, after the second antenna part 224 is grounded, the current concentrated on the first antenna part 223 can be effectively dispersed, thereby preventing the current generated based on the radio frequency signals from being completely concentrated on the first antenna part 223, and effectively reducing the SAR value of the antenna assembly 2230. In addition, in the present embodiment, the earphone 1 includes a left earphone and a right earphone, and the left earphone and the right earphone can be worn in a left-right ear interchangeable wearing mode. When the left earphone and the right earphone are interchanged, the relative positions of the first antenna part 223 and the second antenna part 224 along the gravity direction change, thereby affecting the clearance rate of the first antenna part 223 and / or the second antenna part 224, and further affecting the antenna performance of the first antenna part 223 and / or the second antenna part 224. Therefore, the first antenna part 223 and the second antenna part 224 are respectively connected with the radio frequency port of the radio frequency unit and the grounding point of the radio frequency unit in the above-mentioned manner, so that even when the left earphone and the right earphone are interchanged, at least one of the first antenna part 223 or the second antenna part 224 can be located in a position with a better clearance rate and continue to work, thereby effectively ensuring the stability of the antenna function of the antenna assembly 2230, and also ensuring the implementation of the left-right ear interchanging function of the earphone 1.

[0066] Optionally, in some embodiments, the earphone 1 further comprises a switching element (not shown), a detecting element (not shown) and a control circuit (not shown), the detecting element is configured to detect an operating index of the antenna assembly 2230, for example, a current radiation efficiency of the antenna assembly 2230, or the detecting element can also be configured to detect a relative position relationship between the first antenna part 223 and the second antenna part 224, for example, a spatial relative position relationship between the first antenna part 223 and the second antenna part 224 along the gravity direction, etc., based on which, the control circuit is configured to control the switching element to selectively connect one of the first antenna part 223 and the second antenna part 224 to the radio frequency port of the radio frequency unit, so that the one of the first antenna part 223 and the second antenna part 224 with better clearance rate or better radiation efficiency receives or transmits signals, thereby effectively improving the operating stability and antenna performance of the antenna assembly 2230. For example, in the embodiment, the earphone 1 comprises a left earphone and a right earphone, and the left earphone and the right earphone can be worn in a left ear-right ear interchangeable manner, and when the left earphone and the right earphone are interchanged, the relative position of the first antenna part 223 and the second antenna part 224 changes, and at this time, when the detecting element detects that the first antenna part 223 is located above the second antenna part 224, the clearance rate of the first antenna part 223 is better, and the control circuit connects the first antenna part 223 to the port of the radio frequency unit based on the detection result, so that the radio frequency unit transmits or receives antenna signals through the first antenna part 223, thereby effectively improving the antenna performance and operating stability of the antenna assembly 2230. Optionally, in some embodiments, the detecting element can comprise a gravity sensing element or the like, the switching element can be a logic switching switch or the like, and the control circuit can be a circuit with certain logic control capability, for example, a main control circuit of the earphone 1 or an independent logic processing circuit, etc., wherein the control circuit is connected with the switching element and the detecting element respectively, so as to control the switching element to selectively connect one of the first antenna part 223 and the second antenna part 224 to the radio frequency port of the radio frequency unit based on the detection result of the detecting element. Optionally, in some embodiments, the above-mentioned functions of the switching element, the detecting element and the control circuit can also be independently completed by the main control circuit of the earphone.

[0067] Preferably, in some embodiments, the antenna structure of the first antenna part 223 is the same as that of the second antenna part 224, so that when the relative position relationship between the first antenna part 223 and the second antenna part 224 changes, the first antenna part 223 or the second antenna part 224 with better clearance rate can still efficiently realize the antenna function, thereby effectively improving the stability of the antenna assembly 2230, and further 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 ear.

[0068] 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 a 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, which is configured to effectively ensure that the first antenna length and the second antenna length are as equal as possible, so as to improve the similarity of the first antenna portion 223 and the second antenna portion 224, thereby effectively ensuring that the antenna performance consistency of the antenna assembly 2230 is consistent when the earphone 1 is switched from one side of the ear to the other side of the ear.

[0069] Preferably, in some embodiments, the switching element, the detection element, and the control circuit can be integrally arranged on the first hard circuit board 2201 or the second hard circuit board 2202, which can effectively improve the space utilization of the earphone 1.

[0070] Further, as shown in FIGS. 6 and 7, the first antenna portion 223 and the second antenna portion 224 are arranged at two ends of the battery 222 along the axial direction z1 of the battery 222, and the projections of the first antenna portion 223 and the second antenna portion 224 along the axial direction z1 of the battery 222 are arranged to overlap at least part of the end surface 2220 of the battery 222, respectively, which can effectively reduce the space occupancy of the first antenna portion 223 and the second antenna portion 224 in the radial direction of the battery 222, thereby effectively improving the space utilization of the antenna assembly 2230 and the battery 222 assembly.

[0071] Preferably, in some embodiments, the projections of the first antenna portion 223 and the second antenna portion 224 along the radial direction of the battery 222 do not overlap the battery 222, that is, the first antenna portion 223 and the second antenna portion 224 are located at the two ends of the battery 222 along the axial direction z1, respectively, which is configured to enable the first antenna portion 223 and the second antenna portion 224 to maintain a greater spacing distance from the battery 222, so as to effectively reduce the interference of the battery 222 on the antenna assembly 2230, thereby improving the clearance rate of the antenna assembly 2230, while effectively reducing the space occupancy of the first antenna portion 223 and the second antenna portion 224 in the radial direction of the battery 222, thereby effectively improving the space utilization of the antenna assembly 2230 and the battery 222 assembly.

[0072] Preferably, as shown in FIG. 6 and FIG. 7, in some embodiments, the axial direction z1 of the battery 222 is arranged to be perpendicular to the horizontal plane of the human body in the wearing state, so that the probability of the first antenna part 223 and the second antenna part 224 being blocked by the user's head can be reduced as much as possible in the wearing state, thereby effectively improving the clearance rate of the first antenna part 223 and the second antenna part 224, and further effectively improving the antenna performance of the antenna assembly 2230. Preferably, in some embodiments, the axial direction z1 of the battery 222 can be arranged to be perpendicular to the horizontal plane of the human body in the wearing state, which can further improve the antenna performance of the antenna assembly 2230.

[0073] Preferably, as shown in FIG. 6 and FIG. 7, in some embodiments, the ratio of the area of the first antenna part 223 to the total projected area of the first antenna part 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 part 224 to the total projected area of the second antenna part 224 along the axial direction z1 of the battery 222 is greater than or equal to 1.2. In this way, the space occupancy rate of the first antenna part 223 and the second antenna part 224 along the radial direction of the battery 222 can be effectively reduced, thereby effectively improving the space utilization rate among the first antenna part 223, the second antenna part 224, and the battery 222.

[0074] Preferably, in some embodiments, the area of the first antenna part 223 can be equal to the total projected area of the first antenna part 223 along the axial direction z1 of the battery 222, that is, the ratio of the area of the first antenna part 223 to the total projected area of the first antenna part 223 along the axial direction z1 of the battery 222 is equal to 1. The area of the second antenna part 224 can be equal to the total projected area of the second antenna part 224 along the axial direction z1 of the battery 222, that is, the ratio of the area of the second antenna part 224 to the total projected area of the second antenna part 224 along the axial direction z1 of the battery 222 is equal to 1.

[0075] Preferably, as shown in FIG. 6 and FIG. 7, in some embodiments, the first antenna portion 223 and the second antenna portion 224 are respectively arranged in a sheet shape, a main surface of the first antenna portion 223 is a largest extension surface of the first antenna portion 223, and a main surface of the second antenna portion 224 is a largest extension surface of the second antenna portion 224, wherein the main surface of the first antenna portion 223 and the main surface of the second antenna portion 224 are respectively arranged towards or away from the end surface 2220 of the battery 222, so that the space occupancy of the first antenna portion 223 and the second antenna portion 224 along the axial direction z1 of the battery 222 can be effectively reduced. Further, an included 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 an included 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 respectively less than or equal to 10 degrees, so that the main surface of the first antenna portion 223 and the main surface of the second antenna portion 224 are respectively arranged as parallel to the end surface 2220 of the adjacent battery 222 as possible, so as to further improve the space utilization among the battery 222, the first antenna portion 223 and the second antenna portion 224. For example, in some embodiments, the included 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 included 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 arranged parallel to the normal direction z2, and 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 can also be arranged at a certain angle with the normal direction z2, respectively.

[0076] Preferably, as shown in FIG. 6, FIG. 7 and FIG. 8, in some embodiments, the first antenna part 223 is arranged on the side of the first rigid circuit board 2201 away from the battery 222 along the axial direction z1 of the battery 222, and the second antenna part 224 is arranged on the side of the second rigid circuit board 2202 away from the battery 222 along the axial direction z1 of the battery 222. In this way, the first rigid circuit board 2201 and the second rigid circuit board 2202 can effectively separate the first antenna part 223 and the second antenna part 224 from the battery 222, thereby effectively reducing the interference of the battery 222 on the first antenna part 223 and the second antenna part 224, and further effectively improving the working stability and antenna performance of the antenna assembly 2230. Further, in some embodiments, the first antenna part 223 is arranged on the side of the third end plate 221c away from the first circuit board accommodating area 2211, and the second antenna part 224 is arranged on the side of the fourth end plate 221d away from the second circuit board accommodating area 2212. In this way, the clearance rate of the first antenna part 223 and the second antenna part 224 can be effectively improved, and further, the interference of the battery 222 on the first antenna part 223 and the second antenna part 224 can be further reduced, thereby effectively improving the working stability and antenna performance of the antenna assembly 2230.

[0077] Optionally, as shown in FIG. 6-7, in some embodiments, the circuit board assembly 220 further comprises 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 part 223, and the third flexible circuit board 2205 is further connected to the second antenna part 224. The second flexible circuit board 2204 provides circuit traces for the first antenna part 223, so that the first antenna part 223 can be connected to the radio frequency unit on the rigid circuit board. The third flexible circuit board 2205 provides circuit traces for the second antenna part 224, so that the second antenna part 224 can be connected to the radio frequency unit on the rigid circuit board. In this way, the connection convenience between the first antenna part 223 and the second antenna part and the circuit board assembly 220 can be effectively improved. Preferably, in some embodiments, the second flexible circuit board 2204 extends from one end away from the first rigid circuit board 2201 to form the first antenna part 223 for receiving or transmitting signals, and the third flexible circuit board 2205 extends from one end away from the second rigid circuit board 2202 to form the second antenna part 224 for receiving or transmitting signals. In this way, the second flexible circuit board 2204 and the third flexible circuit board 2205 are reused as the first antenna part 223 and the second antenna part 224, respectively, thereby effectively improving the reuse rate of the circuit board assembly 220, and further effectively simplifying the structure of the earphone 1, and thereby effectively saving the cost of the earphone.

[0078] Optionally, in some embodiments, the first antenna portion 223 and the second antenna portion 224 can be a splinter structure.

[0079] Optionally, in some embodiments, the first antenna portion 223 and the second antenna portion 224 further serve as touch electrodes for receiving touch signals, which can effectively improve the multiplexing rate of the first antenna portion 223 and the second antenna portion 224, thereby effectively simplifying the overall structure of the earphone 1 and further effectively reducing the cost of the earphone.

[0080] Preferably, as shown in FIGS. 2 and 3, in some embodiments, the sound generating portion 10 includes a sound generating assembly (not shown) and a second housing 211 assembly for forming a second accommodating space (not shown) in which the sound generating assembly is arranged, and the ear hook portion 30 connects the first housing 210 assembly 21 and the second housing 211 assembly, which form a clamping state on both sides of the helix in the wearing state, and the second housing 211 assembly is located in the concha cavity. The ear hook portion 30 has a symmetry plane a-a arranged along the length direction of the ear hook portion 30, and the axial direction z1 of the battery 222 intersects with the symmetry plane a-a. Specifically, in the present embodiment, the earphone 1 is an ear clip type earphone, and the symmetry plane a-a of the ear hook portion 30 serves as the symmetry plane a-a of the earphone 1. In the wearing state, the symmetry plane a-a of the earphone 1 intersects with the sagittal plane of the human body, and the included angle between the symmetry plane a-a 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°. Such an arrangement can effectively ensure that the axial direction z1 of the battery 222 intersects with the horizontal plane of the human body in the wearing state, thereby effectively improving the clearance rate of the antenna assembly 2230 and further effectively improving the antenna performance of the antenna assembly 2230.

[0081] Further, as shown in FIGS. 2 and 3, the earphone 1 is arranged in a symmetrical structure (at least referring to the overall appearance profile of the earphone 1) symmetrical to the symmetry plane a-a of the ear hook portion 30. Based on this arrangement, the earphone 1 can be worn in a wearing mode in which the left ear and the right ear are interchangeable, and the earphone 1 can ensure good wearing comfort when worn on the left ear or the right ear.

[0082] Preferably, as shown in FIGS. 2, 3, 5 and 6, in some embodiments, the antenna structure of the first antenna portion 223 and the antenna structure of the second antenna portion 224 are the same, and the first antenna portion 223 and the second antenna portion 224 are symmetrically arranged on both sides of the symmetry plane a-a. Based on this, the earphone 1 can ensure that at least one of the first antenna portion 223 and the second antenna portion 224 has a good clearance rate when worn on the left ear or the right ear, thereby effectively improving the stability of the antenna assembly 2230.

[0083] Optionally, as shown in FIG3, in some embodiments, the maximum dimension d1 of the first housing 210 component 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 component 21 to be arranged in a long column shape, and the maximum dimension d2 of the first housing 210 component 21 is perpendicular to the symmetry plane aa, effectively reducing the space occupied by the first housing 210 component 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 is arranged to intersect 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.

[0084] Optionally, as shown in FIG5, 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.

[0085] Preferably, as shown in FIG3, 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.

[0086] Preferably, as shown in FIG3, 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. Such a setting can further improve the clearance of the antenna assembly 2230, thereby further improving the performance of the antenna assembly 2230.

[0087] 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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