Clip-on earbud

Abstract

Provided in the present application is a clip-on earbud, comprising a first earbud portion, a second earbud portion, a connecting bridge and a tuning module, wherein the first earbud portion comprises a first earbud housing, and a main control board and an antenna main body, which are disposed in the first earbud housing, and the antenna main body is electrically connected to the main control board; the connecting bridge comprises a shell and an electrical connector disposed in the shell, the shell comprises a first shell body and a second shell body which are rotationally connected, the first shell body is connected to the first earbud housing, and the second shell body is connected to the second earbud portion; the electrical connector comprises a first connecting section and a second connecting section which are connected to each other, and the first connecting section is electrically connected to the main control board; the electrical connector constitutes an antenna extension part, and the antenna main body and the antenna extension part constitute an antenna structure; and the tuning module is electrically connected to the antenna structure and is electrically connected to the main control board, and the tuning module is configured to regulate return loss of the antenna structure when an included angle between the second shell body and the first shell body changes.

Description

Clip-on headphones

[0001] This application claims priority to Chinese patent application No. CN202422113834.5, filed on August 29, 2024, entitled “Ear Clip Headphones”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of headphone technology, and more specifically, to a clip-on headphone. Background Technology

[0003] With the widespread application of TWS (True Wireless Stereo) technology in the Bluetooth earphone field, the TWS Bluetooth earphone market is booming, and users' requirements for the TWS Bluetooth earphone experience are becoming increasingly higher.

[0004] In the relevant technical field, when users wear clip-on headphones, different users have different needs for tightness, which can be achieved by adjusting the connecting bridge. However, adjusting the connecting bridge will lead to greater return loss of the antenna structure, which will degrade the radiation performance of the antenna structure and reduce the efficiency of the antenna. Summary of the Invention

[0005] This application provides an ear clip-on earphone, which aims to adjust the return loss of the antenna structure by the tuning module when the angle between the second shell and the first shell changes, so as to ensure that the return loss of the antenna structure is less than a preset value, thereby improving the radiation performance of the antenna structure and improving the user experience.

[0006] This application provides an ear clip-on earphone, including a first earphone part, a second earphone part, a connecting bridge, and a tuning module. The first earphone part includes a first earphone shell, a main control board and an antenna body disposed within the first earphone shell, and the antenna body is electrically connected to the main control board. The second earphone part is opposite to the first earphone part and has a sound outlet. The connecting bridge includes a housing and an electrical connector disposed within the housing. The housing includes a first housing and a second housing rotatably connected, the first housing being connected to the first earphone shell, and the second housing being connected to the second earphone part. The electrical connector includes a first connecting segment and a second connecting segment connected to each other. The first connecting segment passes through the first housing and is electrically connected to the main control board, and the second connecting segment passes through the second housing. The electrical connector constitutes an antenna extension ground, and the antenna body and the antenna extension ground constitute an antenna structure. The tuning module is electrically connected to the antenna structure and to the main control board. The tuning module is configured to adjust the return loss of the antenna structure when the angle between the second housing and the first housing changes, so as to ensure that the return loss of the antenna structure is less than a preset value.

[0007] Based on the ear clip-on headphones of this application, when the angle between the second shell and the first shell changes, the main control board controls the switching on and off of the tuning circuit to ensure that the return loss of the antenna structure is less than a preset value, thereby improving the radiation performance of the antenna and thus adapting to the usage needs of different users to improve the user experience. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the 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.

[0009] Figure 1 is a schematic diagram of the structure of an ear clip-on earphone in one embodiment of this application;

[0010] Figure 2 is a schematic diagram of the internal structure of an ear clip-on earphone in one embodiment of this application;

[0011] Figure 3 is a schematic diagram of the connection between the main control board and the antenna structure in one embodiment of this application;

[0012] Figure 4 is a schematic diagram of the return loss versus frequency curve of the antenna in one embodiment of this application;

[0013] Figure 5 is a schematic diagram of the connection between the main control board and the antenna structure in another embodiment of this application;

[0014] Figure 6 is a schematic diagram of the connection between the main control board and the antenna structure in another embodiment of this application;

[0015] Figure 7 is a schematic diagram of the connection between the main control board and the antenna structure in another embodiment of this application.

[0016] Explanation of reference numerals in the attached drawings: 1. Ear clip-on earphone; 11. First earphone part; 11A. First earphone shell; 111. Main control board; 111A. Feed point; 111B. Grounding point; 112. Battery; 113. Charging port; 12. Second earphone part; 12A. Second earphone shell; 121. Speaker; 13. Connecting bridge; 13A. Outer shell; 13A1. First shell; 13A2. Second shell; 131. Electrical connector; 1311. First connecting section; 1312. Second connecting section; 132. Rotating shaft structure; 1321. First rotating component; 1322. Second rotating component; 14. Antenna structure; 141. Antenna body; 15. Tuning module; 151. Tuning sub-module; 1511. Tuning circuit; 16. Detection device; 161. Rotation detection structure; Q1. Switching element; T1. Tuning element. Embodiments of the present invention

[0017] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0018] Referring to Figures 1 and 2, this application embodiment provides an ear clip-on earphone 1, including a first earphone part 11, a second earphone part 12, and a connecting bridge 13.

[0019] The first earphone unit 11 includes a first earphone shell 11A, a battery 112 disposed within the first earphone shell 11A, and a main control board 111. The battery 112 is electrically connected to the main control board 111 to supply power to the main control board 111. The first earphone unit 11 also has a charging port 113, which is electrically connected to the main control board 111 and the battery 112. The charging port 113 is connected to the first earphone shell 11A and is exposed to allow a charger to be connected to the charging port 113 to charge the ear-clip earphone 1. The first earphone unit 11 may also have a wireless communication module, which is electrically connected to the main control board 111 to establish a wireless communication connection with external devices, thereby enabling the ear-clip earphone 1 to receive audio signals and control signals from external devices.

[0020] For example, the charging port 113 includes at least one of a Micro USB interface, a USB Type-C interface, or a Lightning interface. In other embodiments, the charging port 113 may also be a metal contact. External devices include, but are not limited to, mobile phones, headphones, tablets, and smartwatches.

[0021] The second earphone unit 12 is electrically connected to the main control board 111. The second earphone unit 12 includes a second earphone shell 12A and a speaker 121 disposed in the second earphone shell 12A. The second earphone shell 12A is provided with a sound outlet so that the sound emitted by the speaker 121 can be transmitted outward through the sound outlet.

[0022] For example, the first earphone shell 11A and the second earphone shell 12A can be made of metal or plastic. Specifically, the first earphone shell 11A and the second earphone shell 12A can be made of plastic to provide insulation, thereby reducing the risk of electric shock to the user. Furthermore, because plastic is lightweight, the first earphone shell 11A and the second earphone shell 12A are also lightweight, resulting in a lighter overall weight for the ear-clip earphone 1. This reduces the pressure on the user's ear when the ear-clip earphone 1 is worn, improving wearing comfort. Specifically, the first earphone shell 11A and the second earphone shell 12A can be integrally injection molded to give them high structural strength. This makes them less prone to damage, protecting other components within the earphone shell 11A and the second earphone shell 12A and reducing the probability of damage to other components, thus giving the ear-clip earphone 1 a longer service life. Understandably, the first earphone shell 11A and the second earphone shell 12A can also be made of other skin-friendly materials to improve the user's wearing comfort.

[0023] The connecting bridge 13 includes a housing 13A, which comprises a first housing 13A1 and a second housing 13A2 rotatably connected. The first housing 13A1 is connected to a first earphone shell 11A, and the second housing 13A2 is connected to a second earphone shell 12A. This allows the second earphone part 12 to move relative to the first earphone part 11, enabling the second earphone part 12 to clamp the user's ear together with the first earphone part 11, reducing the probability of the ear-clip earphone 1 detaching from the user's ear and thus reducing the probability of the ear-clip earphone 1 falling out. Furthermore, because the second earphone part 12 can move relative to the first earphone part 11, the ear-clip earphone 1 can adapt to the needs of different users' ear shapes, thicknesses, and wearing tightness. It is understood that the housing 13A can be made of a flexible material to allow for deformation and improve user comfort. In other embodiments, the housing 13A can also be made of rigid plastic.

[0024] It is understandable that the first earphone shell 11A and the first housing 13A1, and the second earphone shell 12A and the second housing 13A2 can be molded into one piece by a two-color injection molding process to improve the overall connection tightness of the first earphone shell 11A, the second earphone shell 12A and the housing 13A.

[0025] Referring to Figures 1 and 2, in one embodiment, the earcup earphone 1 further includes an antenna structure 14, which includes an antenna body 141. The antenna body 141 is electrically connected to the main control board 111 to realize the signal transmission and reception function between the earcup earphone 1 and external devices.

[0026] Referring to Figures 1 and 2, further, to improve the performance of the antenna structure 14, the connecting bridge 13 also includes an electrical connector 131. The electrical connector 131 is disposed inside the housing 13A and includes a first connecting segment 1311 and a second connecting segment 1312. The first connecting segment 1311 passes through the first housing 13A1, and the second connecting segment 1312 passes through the second housing 13A2. The second connecting segment 1312 is electrically connected to the first connecting segment 1311, and one of the first connecting segment 1311 and the second connecting segment 1312 is electrically connected to the grounding point of the main control board 111, so that the electrical connector 131 constitutes an antenna extension ground. The antenna body 141 and the antenna extension ground constitute the antenna structure 14, thereby improving the radiation performance of the antenna structure 14.

[0027] To facilitate the rotatable connection between the first housing 13A1 and the second housing 13A2, the connecting bridge 13 also includes a rotating shaft structure 132. The first housing 13A1 and the second housing 13A2 are rotatably connected through the rotating shaft structure 132, and the rotating shaft structure 132 is electrically connected to the first connecting section 1311 and the second connecting section 1312. The rotating shaft structure 132 and the electrical connector 131 together constitute the antenna extension ground to improve the radiation performance of the antenna structure 14.

[0028] Furthermore, due to differences in the shape, thickness, and tightness of the user's ears, the angle between the first housing 13A1 and the second housing 13A2 will be different, which will change the effective length of the grounding extension line. As a result, the return loss of the antenna structure 14 will be greater than the preset value, resulting in a lower radiation efficiency of the antenna structure 14.

[0029] Please refer to Figures 1-3. Based on this, the ear clip-on earphone 1 also includes a tuning module 15. The tuning module 15 is electrically connected to the antenna structure 14 and to the main control board 111. The main control board 111 controls the on / off state of the tuning module 15 so that when the angle between the second housing 13A2 and the first housing 13A1 changes, the return loss of the antenna structure 14 is less than a preset value, thereby improving the radiation performance of the antenna structure 14 and adapting to the usage needs of different users to improve the user experience.

[0030] For example, the angle between the second housing 13A2 and the first housing 13A1 can be between 0° and 40°. To reduce structural complexity and program processing difficulty, specific angle values ​​can be selected for key value detection. For example, the initial angle between the second housing 13A2 and the first housing 13A1 can be set to 0°, and the second earphone 12 can be moved counterclockwise away from the first earphone 11, so that the second earphone 12 drives the second housing 13A2 to move, which can cause the second housing 13A2 to rotate 10°, 20° and 30° relative to the first housing 13A1.

[0031] In the above process, if the tuning module 15 is not set; when the second housing 13A2 is rotated 0° relative to the first housing 13A1, the return loss versus frequency curve of the antenna structure 14 is the solid curve in Figure 4; when the second housing 13A2 is rotated 10° relative to the first housing 13A1, the return loss versus frequency curve of the antenna structure 14 is the dashed curve in Figure 4; when the second housing 13A2 is rotated 20° relative to the first housing 13A1, the return loss versus frequency curve of the antenna structure 14 is the thin dotted line curve in Figure 4; when the second housing 13A2 is rotated 30° relative to the first housing 13A1, the return loss versus frequency curve of the antenna structure 14 is the thin double dotted line curve in Figure 4.

[0032] If the main control board 111 controls the tuning module 15 to operate, that is, the main control board 111 can control the conduction state of the tuning module 15 according to the rotation angle of the second housing 13A2 relative to the first housing 13A1; when the second housing 13A2 rotates 20° relative to the first housing 13A1, the curve of return loss versus frequency of the antenna structure 14 is the thick dotted line curve in Figure 4; when the second housing 13A2 rotates 30° relative to the first housing 13A1, the curve of return loss versus frequency of the antenna structure 14 is the thick double dotted line curve in Figure 4.

[0033] A comparison of the two shows that, within the frequency range of 2.4005 GHz to 2.4802 GHz, the return loss at rotations of 0°, 10°, 20°, and 30° is all below -10.103 dB. This results in the return loss of antenna structure 14 being less than the preset value, thereby improving the radiation efficiency of antenna structure 14 and enhancing its radiation performance. This, in turn, allows it to adapt to the usage needs of different users and improve the user experience.

[0034] Of course, in other embodiments, the angle between the second housing 13A2 and the first housing 13A1 can be other ranges, and the specific angle value can be selected according to design requirements. In the embodiments of this application, there are no specific limitations on the range of the angle between the second housing 13A2 and the first housing 13A1 or on the specific angle value.

[0035] It is understood that in this embodiment, -10.103 dB is used as the preset value for judging the magnitude of return loss. When the return loss of antenna structure 14 is less than the preset value -10.103 dB, the radiation efficiency of antenna structure 14 is high; when the return loss of antenna structure 14 is greater than or equal to the preset value -10.103 dB, the radiation efficiency of antenna structure 14 is low. In other embodiments, other preset values ​​for judging the magnitude of return loss can also be selected. In this embodiment, the selection of the preset value for judging the magnitude of return loss is not limited.

[0036] Referring to Figures 1-3, in one embodiment, the tuning module 15 includes multiple tuning sub-modules 151. The controlled end of the tuning sub-module 151 is electrically connected to the main control board 111, the first end of the tuning sub-module 151 is electrically connected to the antenna structure 14, and the second end of at least one tuning sub-module 151 is electrically connected to the main control board 111. Thus, the main control board 111 can control the tuning sub-module 151 to turn on or off, thereby improving the radiation performance of the antenna structure 14.

[0037] Referring to Figures 2-5, in one embodiment, the tuning module 15 may include a first tuning submodule. The first end of the first tuning submodule is electrically connected to the antenna body 141, and the second end of at least one first tuning submodule is electrically connected to the feed point 111A of the main control board 111. The main control board 111 can control the on / off state of the first tuning submodule to tune the antenna body 141, so that the return loss of the antenna body 141 is less than a preset value, thereby improving the radiation performance of the antenna structure 14 and adapting to the usage needs of different users to improve the user experience. At this time, the end of the first connecting segment 1311 away from the rotating shaft structure 132 is electrically connected to the ground point 111B of the main control board 111.

[0038] Referring to Figures 2 and 3, in another embodiment, the tuning module 15 may include a second tuning submodule. The first end of the second tuning submodule is electrically connected to the end of the first connecting segment 1311 away from the rotating shaft structure 132. The second end of the second tuning submodule is electrically connected to the grounding point 111B of the main control board 111. The main control board 111 can control the on / off state of the second tuning submodule to tune the grounding extension line, so that the return loss of the antenna structure 14 is less than a preset value, thereby improving the radiation performance of the antenna structure 14 and adapting to the usage needs of different users to improve the user experience. At this time, the antenna body 141 is electrically connected to the grounding point 111B of the main control board 111.

[0039] Referring to Figures 2, 3, and 5, it can be understood that the tuning module 15 may include a first tuning submodule and a second tuning submodule. The first end of the first tuning submodule is electrically connected to the antenna body 141, and the second end of at least one first tuning submodule is electrically connected to the feed point 111A of the main control board 111. The first end of the second tuning submodule is electrically connected to the end of the first connecting section 1311 away from the rotating shaft structure 132, and the second end of the second tuning submodule is electrically connected to the ground point 111B of the main control board 111. The main control board 111 can control the on / off state of the first tuning submodule and the second tuning submodule to tune the antenna structure 14 so that the return loss of the antenna structure 14 is less than a preset value, thereby improving the radiation performance of the antenna structure 14.

[0040] It is understandable that there are no specific restrictions on the number of tuning sub-modules 151 connected between the antenna body 141 and the main control board 111, or on the number of tuning sub-modules 151 connected between the first connection segment 1311 and the main control board 111.

[0041] Referring to Figures 2 and 6, in order to further improve the tuning capability of the ground extension line, the first end of the tuning submodule 151 is electrically connected to the first connection section 1311, the second end of at least one tuning submodule 151 is electrically connected to the grounding point 111B of the main control board 111, and the second ends of the remaining tuning submodules 151 are grounded; the antenna body 141 is electrically connected to the feed point 111A of the main control board 111.

[0042] Specifically, the tuning module 15 may also include a third tuning submodule. The first end of the third tuning submodule is electrically connected to the first connection section 1311, and the second end of the third tuning submodule is grounded. The controlled ends of the second and third tuning submodules are both electrically connected to the main control board 111. Thus, when the effective length of the grounding extension line changes, the main control board 111 can control the on / off state of the second and third tuning submodules, thereby improving the tuning capability of the antenna structure 14 to adapt to the usage needs of different users.

[0043] Referring to Figures 2 and 7, in one embodiment, each tuning submodule 151 includes multiple parallel tuning circuits 1511. The controlled terminal of each tuning circuit 1511 is electrically connected to the controlled terminal of the tuning submodule 152, so that the main control board 111 can control the corresponding tuning circuit 1511 to be turned on, so that the corresponding tuning circuit 1511 is connected to the antenna structure 14, thereby tuning the antenna structure 14 so that the return loss of the antenna structure 14 is less than a preset value, thereby improving the radiation performance of the antenna structure 14.

[0044] Referring to Figures 2 and 7, in one embodiment, each tuning circuit 1511 includes a switching element Q1 and a tuning element T1. The switching element Q1 and the tuning element T1 are connected in series between the first terminal and the second terminal of the tuning submodule 151. The controlled terminal of the switching element Q1 is electrically connected to the controlled terminal of the tuning submodule 151. When the angle between the first housing 13A1 and the second housing 13A2 changes, the main control board 111 can control the switching element Q1 in the tuning circuit 1511 to be turned on, so that the corresponding tuning element T1 is connected to the antenna structure 14, thereby tuning the antenna structure 14 so that the return loss of the antenna structure 14 is less than a preset value, thereby improving the radiation performance of the antenna structure 14.

[0045] It is understood that the switching element Q1 includes at least one of a bipolar junction transistor (BJT), a metal-oxide-semiconductor (MOS), and an electromagnetic relay. In the embodiments of this application, the specific form of the switching element Q1 is not limited.

[0046] It is understood that the tuning element T1 includes at least one of a wire, a capacitor, a resistor, and an inductor. In other embodiments, the tuning element T1 may also take other forms. In the embodiments of this application, the specific form of the tuning element T1 is not limited.

[0047] It is understood that, in another embodiment, the tuning submodule 151 further includes a switch (not shown in the figure). The controlled terminal of the switch is electrically connected to the controlled terminal of the tuning submodule 151, the input terminal of the switch is electrically connected to the first terminal of the tuning submodule 151, and the multiple output terminals of the switch are electrically connected to multiple tuning circuits 1511 respectively, and are electrically connected to the second terminal of the tuning submodule 151 through the multiple tuning circuits 1511. Each tuning circuit 1511 includes a tuning element T1. When the angle between the first housing 13A1 and the second housing 13A2 changes, the main control board 111 can control the switch to turn on the corresponding tuning circuit 1511, so that the corresponding tuning circuit 1511 is connected to the antenna structure 14, thereby tuning the antenna structure 14 so that the return loss of the antenna structure 14 is less than a preset value, thereby improving the radiation performance of the antenna structure 14.

[0048] It is understood that the switch can be a multi-pole multi-position switch. In other embodiments, the switch can also take other forms.

[0049] Referring to Figure 2, in one embodiment, the ear clip-on earphone 1 further includes a detection device 16, which is electrically connected to the main control board 111 so that the main control board 111 acquires detection information and controls the switching on and off of the tuning circuit 1511 according to the detection information; wherein, the detection information includes at least one of the angle information between the first housing 13A1 and the second housing 13A2 and the return loss information of the antenna body 141.

[0050] In this embodiment, the rotating shaft structure 132 further includes a first rotating member 1321 and a second rotating member 1322. The first rotating member 1321 is connected to the first housing 13A1 and electrically connected to the first connecting section 1311; the second rotating member 1322 is connected to the second housing 13A2 and electrically connected to the second connecting section 1312, and is rotatably connected to and electrically connected to the first rotating member 1321; the detection device 16 includes a rotation detection structure 161, which is electrically connected to the main control board 111 and to the first rotating member 1321 and the second rotating member 1322. At least one electrical connection in 2 allows the main control board 111 to obtain rotation parameters between the first rotating member 1321 and the second rotating member 1322 via the rotation detection structure 161, thereby obtaining the angle information between the first housing 13A1 and the second housing 13A2. This enables the main control board 111 to control the on / off state of the corresponding tuning circuit 1511 based on the angle information, ensuring that the return loss of the antenna structure 14 is less than a preset value when the angle between the second housing 13A2 and the first housing 13A1 changes. This improves the radiation performance of the antenna structure 14 and allows it to adapt to the usage needs of different users, thereby enhancing the user experience.

[0051] Referring to Figure 2, the rotation detection structure 161, by way of example, includes at least one of an electrically conductive mechanical structure, a magnetic detection structure, and an optical detection structure. In other embodiments, the rotation detection structure 161 may also take other forms.

[0052] For example, the electrically conductive mechanical structure may include multiple mechanical switches and a trigger. The multiple mechanical switches are disposed on one of the first rotating member 1321 and the second rotating member 1322, and are all electrically connected to the main control board 111. The trigger is disposed on the other of the first rotating member 1321 and the second rotating member 1322. When the trigger is electrically connected to the corresponding mechanical switch, the mechanical switch is turned on. When the second housing 13A2 rotates relative to the first housing 13A1, the second rotating member 1322 moves relative to the first rotating member 1321, causing the mechanical switches to turn on sequentially. This allows the main control board 111 to obtain the rotation parameters of the first housing 13A1 and the second housing 13A2, and thus obtain the angle information between the first housing 13A1 and the second housing 13A2.

[0053] The magnetic detection structure may include a magnetic component and a magnetic induction chip. The magnetic component is disposed on one of the first rotating component 1321 and the second rotating component 1322, and the magnetic induction chip is disposed on the other of the first rotating component 1321 and the second rotating component 1322, and is electrically connected to the main control board 111. When the first rotating component 1321 and the second rotating component 1322 rotate relative to each other, the position of the magnetic induction chip in the magnetic field of the magnetic component changes, so that the magnetic induction chip can send a changing electrical signal to the main control board 111. The main control board 111 can obtain the rotation parameters of the first housing 13A1 and the second housing 13A2 based on the changing electrical signal, and then obtain the angle information between the first housing 13A1 and the second housing 13A2.

[0054] The light detection structure may include a reflector and a photosensitive chip. The reflector is disposed on one of the first rotating member 1321 and the second rotating member 1322. Different positions of the reflector have different reflectivities. The photosensitive chip is disposed on the other of the first rotating member 1321 and the second rotating member 1322 and is electrically connected to the main control board 111. The photosensitive chip has a light-emitting element and a photosensitive element. The photosensitive element is configured to receive the light signal emitted by the light-emitting element and reflected by the reflector, and send an electrical signal to the main control board 111. The relative rotation of the first rotating member 1321 and the second rotating member 1322 will cause the light signal received by the photosensitive element emitted by the light-emitting element and reflected by the reflector to change, so as to change the electrical signal sent by the photosensitive element to the main control board 111. Thus, the main control board 111 can obtain the rotation parameters of the first housing 13A1 and the second housing 13A2 according to the changing electrical signal, and then obtain the angle information between the first housing 13A1 and the second housing 13A2. It is understood that the reflector has at least one of the following: a bright / dark marking area, an area with varying polish, a pit, and a raised area.

[0055] It is understandable that the surfaces of the first rotating member 1321 and the second rotating member 1322 can also be processed to form areas with different reflectivity, so that the light signals received by the photosensitive element are different, so that the photosensitive element outputs different electrical signals, thereby enabling the main control board 111 to obtain the angle information between the first housing 13A1 and the second housing 13A2.

[0056] In one embodiment, the communication connection between the detection device 16 and the main control board 111 includes at least one of wired communication, WLAN (Wireless Local Area Network), RFID (Radio Frequency Identification), NFC (Near Field Communication), ZigBee, Bluetooth, and infrared, so that the main control board 111 can obtain detection information. In other embodiments, the communication connection between the detection device 16 and the main control board 111 can also be in other forms. In this application embodiment, the communication connection method between the detection device 16 and the main control board 111 is not limited.

[0057] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0058] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An ear clip-on headphone, wherein, include: The first earphone part includes a first earphone shell, a main control board disposed inside the first earphone shell, and an antenna body, wherein the antenna body is electrically connected to the main control board; The second earpiece is opposite to the first earpiece and has a sound outlet. A connecting bridge includes a housing and an electrical connector disposed within the housing. The housing includes a first housing and a second housing rotatably connected, the first housing being connected to a first earphone shell, and the second housing being connected to a second earphone part. The electrical connector includes a first connecting segment and a second connecting segment connected to each other. The first connecting segment passes through the first housing and is electrically connected to the main control board, and the second connecting segment passes through the second housing. The electrical connector constitutes an antenna extension ground, and the antenna body and the antenna extension ground constitute an antenna structure. as well as The tuning module is electrically connected to the antenna structure and to the main control board. The tuning module is configured to adjust the return loss of the antenna structure when the angle between the second housing and the first housing changes, so as to ensure that the return loss of the antenna structure is less than a preset value.

2. The clip-on earphone as described in claim 1, wherein, The connecting bridge also includes: The first housing and the second housing are rotatably connected via the rotating shaft structure. The rotating shaft structure is electrically connected to the electrical connector, and the rotating shaft structure and the electrical connector together constitute the antenna extension ground.

3. The clip-on earphone as described in claim 1, wherein, The tuning module includes multiple tuning sub-modules. The controlled end of the tuning sub-module is electrically connected to the main control board. The first end of the tuning sub-module is electrically connected to the antenna structure. The second end of at least one tuning sub-module is electrically connected to the main control board.

4. The ear clip-on earphone as described in claim 3, wherein, The tuning module includes a first tuning submodule, a first terminal of which is electrically connected to the antenna body, and at least one second terminal of the first tuning submodule is electrically connected to the feed point of the main control board; and / or, The tuning module includes a second tuning submodule, the first end of which is electrically connected to the first connection segment, and the second end of which is electrically connected to the grounding point of the main control board.

5. The ear clip-on earphone as described in claim 3, wherein, The first end of the tuning submodule is electrically connected to the first connection segment, the second end of at least one tuning submodule is electrically connected to the grounding point of the main control board, and the second ends of the remaining tuning submodules are grounded. The antenna body is electrically connected to the feed point of the main control board.

6. The ear clip-on earphone as described in claim 3, wherein, The tuning module includes: A second tuning submodule, wherein a first end of the second tuning submodule is electrically connected to the first connection segment, and a second end of the second tuning submodule is electrically connected to the grounding point of the main control board; and The third tuning submodule has its first end electrically connected to the first connection segment and its second end grounded.

7. The ear clip-on earphone as described in claim 3, wherein, Each of the tuning submodules includes multiple tuning circuits connected in parallel, and the controlled terminal of each tuning circuit is electrically connected to the controlled terminal of the tuning submodule.

8. The ear clip-on earphone as described in claim 7, wherein, Each of the tuning circuits includes a switching element and a tuning element, wherein the switching element and the tuning element are connected in series between the first terminal of the tuning submodule and the second terminal of the tuning submodule, and the controlled terminal of the switching element is electrically connected to the controlled terminal of the tuning circuit.

9. The clip-on earphone as described in claim 8, wherein, The tuning element includes at least one of a wire, a capacitor, a resistor, and an inductor.

10. The clip-on earphone as described in claim 7, wherein, The tuning submodule further includes a switch, the controlled terminal of which is electrically connected to the controlled terminal of the tuning submodule, the input terminal of which is electrically connected to the first terminal of the tuning submodule, and multiple output terminals of which are electrically connected to multiple tuning circuits, and are electrically connected to the second terminal of the tuning submodule through the multiple tuning circuits. Each of the tuning circuits includes a tuning element connected between a first terminal of the tuning submodule and a second terminal of the tuning submodule.

11. The ear clip-on earphone as claimed in claim 10, wherein, The tuning element includes at least one of a wire, a capacitor, a resistor, and an inductor.

12. The clip-on earphone as described in claim 10, wherein, The switch includes a multi-pole multi-position switch.

13. The ear clip-on earphone as described in claim 1, wherein, Also includes: The detection device is electrically connected to the main control board so that the main control board can acquire detection information. The main control board is configured to control the on / off state of the tuning module based on the detection information. The detection information includes at least one of the angle information between the first housing and the second housing and the return loss information of the antenna structure.

14. The ear clip-on earphone as described in claim 13, wherein, The connecting bridge also includes a rotating shaft structure, through which the first housing and the second housing are rotatably connected; The rotating shaft structure includes: A first rotating member is connected to the first housing and electrically connected to the first connecting section; and The second rotating component is connected to the second housing and electrically connected to the second connecting section, and is electrically connected to the first rotating component and rotatably connected to the first rotating component; and the rotating shaft structure and the electrical connector together constitute the antenna extension ground; The detection device includes: A rotation detection structure is electrically connected to the main control board and to at least one of the first rotating component and the second rotating component. The rotation detection structure is configured to detect the rotation parameters of the second rotating component relative to the first rotating component and to send the rotation parameters to the main control board. The main control board obtains the angle information between the first housing and the second housing through the rotation parameters.

15. The ear clip-on earphone as described in claim 14, wherein, The rotating detection structure includes at least one of an electrically conductive mechanical structure, a magnetic detection structure, and an optical detection structure.

16. The clip-on earphone as claimed in claim 14, wherein, The rotation detection structure includes an electrically conductive mechanical structure, which may include multiple mechanical switches and a trigger. The multiple mechanical switches are disposed on one of the first rotating member and the second rotating member, and are all electrically connected to the main control board. The trigger is disposed on the other of the first rotating member and the second rotating member. When the trigger rotates to be electrically connected to the corresponding mechanical switch, the mechanical switch is turned on, allowing the main control board to obtain the rotation parameters of the first housing and the second housing.

17. The clip-on earphone as claimed in claim 14, wherein, The rotation detection structure includes a magnetic detection structure that may include a magnetic component and a magnetic induction chip. The magnetic component is disposed on one of the first rotating component and the second rotating component; the magnetic induction chip is disposed on the other of the first rotating component and the second rotating component and is electrically connected to the main control board. The relative rotation of the first rotating component and the second rotating component causes the position of the magnetic induction chip in the magnetic field of the magnetic component to change, so that the magnetic induction chip sends a changing electrical signal to the main control board, and the main control board obtains the rotation parameters of the first housing and the second housing based on the changing electrical signal.

18. The clip-on earphone as claimed in claim 14, wherein, The rotation detection structure includes a light detection structure, which comprises a reflector and a photosensitive chip. The reflector is disposed on one of the first rotating member and the second rotating member, and different positions of the reflector have different reflectivities. The photosensitive chip is disposed on the other of the first rotating member and the second rotating member, and is electrically connected to the main control board. The photosensitive chip has a light-emitting element and a photosensitive element. The photosensitive element is configured to receive light signals emitted by the light-emitting element and reflected by the reflector, and to send electrical signals to the main control board. The relative rotation of the first rotating member and the second rotating member causes a change in the light signal received by the photosensitive element from the light-emitting element and reflected by the reflector, which in turn causes a change in the electrical signal sent by the photosensitive element to the main control board. The main control board then obtains the rotation parameters of the first housing and the second housing based on the changed electrical signal.

19. The clip-on earphone as claimed in claim 18, wherein, The reflective element has at least one of the following: a bright / dark marking area, an area with varying polish, a pit, and a raised area.

20. The clip-on earphone as claimed in claim 18, wherein, The surfaces of the first rotating member and the second rotating member are processed to form regions with different reflectivities to form the reflective member.

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