Wireless earphone

Abstract

The embodiment of the application provides a wireless earphone, which comprises a first part, a connecting beam and a second part, the connecting beam being connected between the first part and the second part; the second part comprises a radio frequency module, a switch, a first antenna, a second antenna and a ground structure; the switch is electrically connected with the radio frequency module, and the switch is used to be in a first state, so that the first antenna is electrically connected with the radio frequency module through the switch, and the second antenna is disconnected with the radio frequency module; the switch is also used to be in a second state, so that the second antenna is electrically connected with the radio frequency module through the switch, and the first antenna is disconnected with the radio frequency module; the ground structure is electrically connected with the radio frequency module, the first antenna and the second antenna; a part of the ground structure and the first antenna are located on one side of the connecting beam, and another part of the ground structure and the second antenna are located on the other side of the connecting beam. The scheme can avoid the difference in antenna performance caused by switching the wearing of a single earphone between the left ear and the right ear, and improve the antenna performance and connection experience of the earphone.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wearable devices, and in particular to a wireless earphone. BACKGROUND

[0002] There is a wireless earphone on the market, the left earphone and the right earphone have the same structure, and a single earphone is not distinguished between the left ear and the right ear for wearing, so that the manufacturer can produce according to the structure scheme of a single earphone, so as to reduce the cost. Figure 1 As shown in the figure, if the single earphone is taken off from the left ear and worn on the right ear, it is equivalent to rotating the earphone by 180° clockwise in the picture.

[0003] However, the single earphone has only one antenna, when the earphone is switched between the left ear and the right ear, the position of the antenna and the feed point relative to the ear changes, resulting in differences in the antenna performance of the earphone when worn on the left ear and the right ear, for example Figure 2 differences in the antenna pattern are shown. This will affect the antenna performance and connection experience of the earphone. SUMMARY

[0004] The embodiments of the present application provide a wireless earphone, which can avoid the differences in the antenna performance caused by the switching of a single earphone between the left ear and the right ear, and improve the antenna performance and connection experience of the earphone.

[0005] In a first aspect, the embodiments of the present application provide a wireless earphone, comprising a first part, a connecting beam and a second part, the connecting beam being connected between the first part and the second part; the second part comprising a radio frequency module, a switch, a first antenna, a second antenna and a ground structure; the switch being electrically connected with the radio frequency module, and the switch being used to be in a first state to make the first antenna electrically connected with the radio frequency module through the switch and make the second antenna disconnected with the radio frequency module; the switch being further used to be in a second state to make the second antenna electrically connected with the radio frequency module through the switch and make the first antenna disconnected with the radio frequency module; the ground structure being electrically connected with the radio frequency module, the first antenna and the second antenna; a part of the ground structure and the first antenna being located on one side of the connecting beam, and another part of the ground structure and the second antenna being located on the other side of the connecting beam.

[0006] In the present scheme, the first antenna and the second antenna are arranged on the opposite sides of the connecting beam, the ground structure is distributed on the opposite sides of the connecting beam, and when the wireless earphone is switched between the left ear and the right ear, the wireless earphone can switch the first antenna or the second antenna to the working antenna through the switch. Since the position of the working antenna relative to the ear changes little before and after the switching of the wireless earphone, the position of the ground and the ground current relative to the ear changes little, so that the problem of inconsistent antenna performance can be improved, and the antenna performance and connection experience of the earphone are improved.

[0007] In an implementation form of the first aspect, the ground structure comprises a printed circuit board, the radio frequency module and the switch are arranged on the printed circuit board, one part of the printed circuit board is located on one side of the connecting beam with the first antenna, and another part of the printed circuit board is located on the other side of the connecting beam with the second antenna.

[0008] In the scheme, the printed circuit board is used as the ground of the antenna system of the wireless earphone, so that the antenna system can work normally. By distributing the printed circuit board on the opposite sides of the connecting beam, the ground current can be distributed on the opposite sides of the connecting beam. When the wireless earphone switches the wearing, the positions of the ground and the ground current relative to the ear change little, so that the problem of inconsistent performance can be improved, and the antenna performance and the connection experience of the earphone are improved.

[0009] In an implementation form of the first aspect, the ground structure comprises a flexible circuit board, the flexible circuit board is electrically connected with the printed circuit board, one part of the flexible circuit board is located on one side of the connecting beam with the first antenna, and another part of the flexible circuit board is located on the other side of the connecting beam with the second antenna.

[0010] In the scheme, the flexible circuit board is used as the ground of the antenna system of the wireless earphone, so that the antenna system can work normally. By distributing the flexible circuit board on the opposite sides of the connecting beam, the ground current can be distributed on the opposite sides of the connecting beam. When the wireless earphone switches the wearing, the positions of the ground and the ground current relative to the ear change little, so that the problem of inconsistent performance can be improved, and the antenna performance and the connection experience of the earphone are improved.

[0011] In an implementation form of the first aspect, the first part comprises a loudspeaker, the connecting beam is provided with a first transmission line, one end of the first transmission line is electrically connected with the loudspeaker; the ground structure comprises a second transmission line and a third transmission line, the second transmission line and the third transmission line are connected with the end of the first transmission line away from the loudspeaker, the second transmission line and the third transmission line extend to the two sides of the connecting beam respectively, the second transmission line is located on the same side of the connecting beam with the second antenna, and the third transmission line is located on the same side of the connecting beam with the first antenna.

[0012] In the scheme, the second transmission line and the third transmission line are used as the ground of the antenna system of the wireless earphone, so that the antenna system can work normally. By distributing the second transmission line and the third transmission line on the opposite sides of the connecting beam, the ground current can be distributed on the opposite sides of the connecting beam. When the wireless earphone switches the wearing, the positions of the ground and the ground current relative to the ear change little, so that the problem of inconsistent performance can be improved, and the antenna performance and the connection experience of the earphone are improved.

[0013] In an implementation form of the first aspect, the first antenna and the second antenna are distributed in axial symmetry, and / or the ground structure is an axially symmetric structure.

[0014] In the scheme, through the above axisymmetric design, the position of the working antenna relative to the ear and the position of the ground and ground current relative to the ear remain basically unchanged when the wireless earphone is switched between wearing, thereby greatly improving the inconsistent problem of the antenna performance, and improving the antenna performance and connection experience of the earphone.

[0015] In an implementation form of the first aspect, the switch includes a first end, a second end and a third end, the first end is electrically connected with the radio frequency module, the second end is electrically connected with the first antenna, and the third end is electrically connected with the second antenna; in the case that the switch is in the first state, the first end is conductive with the second end; in the case that the switch is in the second state, the first end is conductive with the third end. By making the switch a double-throw switch, the design requirement of switching the working antenna can be well met.

[0016] In an implementation form of the first aspect, the second part includes a battery, the battery is electrically connected with the printed circuit board, and the battery is located in a space surrounded by the printed circuit board, the first antenna, the second antenna, the flexible circuit board, the second transmission line and the third transmission line. Through the above stacking design, the product structure can be more compact, and the structural space can be fully utilized.

[0017] In an implementation form of the first aspect, the second part includes a touch electrode, and the touch electrode is located between the first antenna and the second antenna. By arranging the touch electrode between the two antennas, the product structure can be more compact, and the structural space can be fully utilized.

[0018] In an implementation form of the first aspect, the second part includes a charging electrode, and the charging electrode is arranged on the flexible circuit board and electrically connected with the printed circuit board. The charging electrode can be electrically connected with the power management module / circuit on the printed circuit board through the flexible circuit board, thereby realizing charging of the wireless earphone.

[0019] In an implementation form of the first aspect, the second part includes a system-on-chip, and the radio frequency module is integrated in the system-on-chip. Integrating the radio frequency module in the system-on-chip can improve system integration, reduce system power consumption, improve system running efficiency and reduce cost. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic diagram of switching between wearing of a prior wireless earphone between left and right ears;

[0021] Figure 2 is a radiation pattern diagram of the prior wireless earphone when worn on the left and right ears respectively;

[0022] Figure 3 is an assembly structure schematic diagram of the wireless earphone of the embodiment of the present application;

[0023] Figure 4 is Figure 3A schematic view of the wireless earphone worn in the ear is shown.

[0024] Figure 5 is Figure 3 A schematic view of the partial structure of the wireless earphone is shown.

[0025] Figure 6 is Figure 5 A schematic view of the A-direction structure of the wireless earphone is shown.

[0026] Figure 7 is Figure 5 A schematic view of the exploded structure of the wireless earphone is shown.

[0027] Figure 8 is Figure 7 A schematic view of the structure of the first antenna and the second antenna in the wireless earphone.

[0028] Figure 9 is Figure 7 A schematic view of the structure of the flexible circuit board in the wireless earphone.

[0029] Figure 10 is a schematic view of the wireless earphone switching between the left ear and the right ear. DETAILED DESCRIPTION

[0030] For the convenience of understanding, the related technical terms involved in the embodiments of the present application are explained and described below.

[0031] In the description of the embodiments of the present application, "multiple" refers to two or more, unless otherwise specified.

[0032] The terms "first", "second", and the like are used only for descriptive purposes, and cannot be understood as implying or suggesting relative importance or implicitly indicating the number of the indicated technical features. The features limited by "first", "second" can explicitly or implicitly include one or more of the features.

[0033] "Connection" should be understood broadly, for example, "connection" can be detachable connection, or non-detachable connection; can be direct connection, or indirect connection through intermediate medium. "Fixed" should also be understood broadly, for example, "fixed" can be direct fixation, or indirect fixation through intermediate medium.

[0034] The orientation terms mentioned in the embodiments of the present application, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top", "bottom", etc., are only the directions of the drawings. The orientation terms are used to better and more clearly illustrate and understand the embodiments of the present application, and are not intended to indicate that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, etc., and therefore cannot be understood as a limitation on the embodiments of the present application.

[0035] In the description of the embodiments of the present application, unless otherwise specified, "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships. For example, A and / or B can represent the three cases of A existing alone, A and B existing together, and B existing alone.

[0036] As shown in Figure 3 The present application provides a wireless earphone 1, which can include a first part 2, a connecting beam 3, and a second part 4. The connecting beam 3 is located between the first part 2 and the second part 4, and connects the first part 2 and the second part 4.

[0037] As shown in Figure 4 The wireless earphone 1 can be an ear clip earphone. The first part 2 is used to be inserted into the ear canal, and the second part 4 is used to contact the back of the ear. In this embodiment, the first part 2 and the second part 4 can be connected by the connecting beam 3. Figure 4 The internal structure of the first part 2 and the second part 4 after removing the shell is shown in

[0038] In this embodiment, the shape of the first part 2 can be designed as needed, for example, it can be roughly spherical. The first part 2 can include a shell, and functional devices such as a speaker and a noise reduction microphone installed in the shell.

[0039] In this embodiment, the connecting beam 3 can be a curved line to adapt to the shape of the ear. The connecting beam 3 can include a shell (or skin) and a structural member and a first transmission line installed in the shell. The structural member has a certain strength and rigidity, and can play a role in maintaining the shape of the connecting beam 3, connecting and supporting the first part 2 and the second part 4. One end of the first transmission line can be electrically connected with the speaker and the noise reduction microphone, and the other end of the first transmission line can be connected with the second transmission line and the third transmission line described below. The first transmission line can play a role in transmitting electric energy and / or signals. The first transmission line includes but is not limited to a cable.

[0040] In this embodiment, the shape of the second part 4 can be designed as needed, for example, it can be roughly ellipsoidal. The second part 4 can include a shell and components installed in the shell. Figure 5 As shown in Figure 6 The schematic structure of the wireless earphone 1 after removing the shell of the second part 4 is shown. As shown in Figures 4-6 The components in the shell of the second part 4 can include a printed circuit board 41, a flexible circuit board 42, a first antenna 43, a touch electrode 44, a second antenna 45, a battery 46, a second transmission line 47, and a third transmission line 48, etc.

[0041] like Figure 7 As shown, schematically, the printed circuit board 41 can have an axisymmetric shape, for example, its shape can be roughly racetrack-shaped. In this embodiment, "symmetry" includes symmetry in a strict geometric sense, and may also include cases where there is a certain deviation from symmetry in a strict geometric sense.

[0042] Various components, circuits, and lines can be arranged on the printed circuit board 41, including but not limited to an application processor (AP), modem, RF module, switch, power management module / circuit, ground line, etc. In one embodiment, at least two of the application processor, modem, RF module, etc., can be integrated into a system-on-chip (SOC). In other embodiments, an SOC integration design may not be used, and each chip / component may be arranged separately on the printed circuit board 41.

[0043] The radio frequency (RF) module can modulate baseband signals into RF signals and transmit them through an antenna. The RF module can also receive RF signals through an antenna and demodulate them back into baseband signals. This embodiment does not limit the specific structure and configuration of the RF module.

[0044] The switch is used to electrically connect the first antenna 43, the second antenna 45, and the radio frequency (RF) module. The switch has a first state and a second state. In the first state, the switch electrically connects the first antenna 43 to the RF module and disconnects the second antenna 45 from the RF module. In the second state, the switch electrically connects the second antenna 45 to the RF module and disconnects the first antenna 43 from the RF module. Schematic, the switch may have a first terminal, a second terminal, and a third terminal. The first terminal is electrically connected to the RF module, the second terminal is electrically connected to the first antenna 43, and the third terminal is electrically connected to the second antenna 45. In the first state, the first and second terminals are connected, allowing the RF module to be electrically connected to the first antenna 43. In the second state, the first and third terminals are connected, allowing the RF module to be electrically connected to the second antenna 45. The switch includes, but is not limited to, a double-pole double-throw (DPDT) switch, a single-pole double-throw (SPDT) switch, etc.

[0045] like Figures 5-7 As shown, battery 46 can be arranged close to and electrically connected to printed circuit board 41. Battery 46 serves as the power source for wireless earphone 1 and can be electrically connected to the power management module / circuit on printed circuit board 41.

[0046] like Figure 7 and Figure 8As shown, the first antenna 43 and the second antenna 45 can be arranged in a substantially axisymmetric manner. The first antenna 43 can have a structure designed as needed, for example, can include a substantially square-shaped main body, and a feed point 43a connected to a corner of the main body. An arc-shaped notch can be formed on the main body of the first antenna 43. The second antenna 45 can have a structure designed as needed, for example, can include a substantially square-shaped main body, and a feed point 45a connected to a corner of the main body. An arc-shaped notch can be formed on the main body of the second antenna 45. Illustratively, the first antenna 43 and the second antenna 45 can both be FPC (flexible printed circuit) antennas.

[0047] In combination Figure 6 With Figure 7 As shown, the feed point 43a of the first antenna 43 can be soldered to the printed circuit board 41, thereby realizing the electrical connection between the first antenna 43 and the switches and the radio frequency unit on the printed circuit board 41, and the radio frequency unit can feed the first antenna 43 through the feed point 43a. The feed point 45a of the second antenna 45 can be soldered to the printed circuit board 41, thereby realizing the electrical connection between the second antenna 45 and the switches and the radio frequency unit on the printed circuit board 41, and the radio frequency unit can feed the second antenna 45 through the feed point 45a. As Figure 5 And Figure 6 As shown, the first antenna 43 and the second antenna 45 can cover different areas of the top surface of the battery 46 respectively, and the first antenna 43 and the second antenna 45 can both maintain a certain gap with the battery 46.

[0048] As shown, the touch electrode 44 can be located between the first antenna 43 and the second antenna 45, and can be electrically connected to the printed circuit board 41. The touch electrode 44 is used to realize the touch function of the wireless earphone 1. Figure 5 Figure 6 As shown, the touch electrode 44 can be located between the first antenna 43 and the second antenna 45, and can be electrically connected to the printed circuit board 41. The touch electrode 44 is used to realize the touch function of the wireless earphone 1.

[0049] As shown, the flexible circuit board 42 can have a substantially axisymmetric structure, which can have a bending portion 42a, a connecting portion 42b and a bending portion 42c. In combination Figure 9 With Figure 9 As shown, the connecting portion 42b can be connected to the printed circuit board 41 (for example, connected through a connector), to realize the electrical connection between the flexible circuit board 42 and the printed circuit board 41. As Figure 7 And Figure 5 As shown, the flexible circuit board 42 can be located on one side of the battery 46 substantially, and can maintain a certain gap with the battery 46. Figure 6 As shown, the flexible circuit board 42 can have a substantially axisymmetric structure, which can have a bending portion 42a, a connecting portion 42b and a bending portion 42c. In combination

[0050] With Figure 6 As shown, the connecting portion 42b can be connected to the printed circuit board 41 (for example, connected through a connector), to realize the electrical connection between the flexible circuit board 42 and the printed circuit board 41. As Figure 7 ​As shown schematically, charging electrodes (or charging pins) 421 and 422 can also be arranged on the flexible circuit board 42. One of the charging electrodes 421 and 422 can be a positive electrode, and the other can be a negative electrode. In this embodiment, the flexible circuit board 42 can be used to transmit signals between the charging electrodes, touch electrodes 44, and other functional devices (including but not limited to the main microphone, sensors, etc.) and the printed circuit board 41.

[0051] like Figure 6 and Figure 7 As shown, both the second transmission line 47 and the third transmission line 48 can be located on the other side of the battery 46. One end of the second transmission line 47 and the third transmission line 48 can converge at one point and both are connected to the first transmission line 31. From this convergence point, the second transmission line 47 and the third transmission line 48 can extend in opposite directions. The second transmission line 47 and the third transmission line 48 can be approximately axially symmetrically distributed.

[0052] In one embodiment, the second transmission line 47 and the third transmission line 48 may be the same bundle of transmission lines, which are assembled together with the first transmission line 31. Alternatively, the second transmission line 47 and the third transmission line 48 may each be a separate bundle of transmission lines, each bundle of transmission lines being assembled together with the first transmission line 31. Alternatively, the first transmission line 31, the second transmission line 47, and the third transmission line 48 may be the same bundle of transmission lines, which are one path before the convergence point and split into two paths at the convergence point.

[0053] In this embodiment, both the second transmission line 47 and the third transmission line 48 can be electrically connected to the flexible circuit board 42. (Illustrative example follows.) Figure 7 As shown, the second transmission line 47 can be electrically connected to the bend 42c of the flexible circuit board 42, and the third transmission line 48 can be electrically connected to the bend 42a of the flexible circuit board 42. Through the flexible circuit board 42, the second transmission line 47 and the third transmission line 48 can be electrically connected to the printed circuit board 41. Through the first transmission line 31, the second transmission line 47, and the third transmission line 48, devices such as speakers and microphones in the first part 2 can be electrically connected to the printed circuit board 41 and battery 46 in the second part 4, thereby achieving power supply and signal transmission.

[0054] like Figure 5 and Figure 6 As shown, the battery 46 can be considered to be located within the space enclosed by the printed circuit board 41, the first antenna 43, the second antenna 45, the flexible circuit board 42, the second transmission line 47, and the third transmission line 48. The first antenna 43, the second antenna 45, the flexible circuit board 42, the second transmission line 47, and the third transmission line 48 can respectively "envelop" the battery 46 from the top surface, one side, and the other side. This stacking design is relatively compact and can make full use of the structural space.

[0055] In this embodiment, the printed circuit board 41, the flexible circuit board 42, the second transmission line 47 and the third transmission line 48 can all serve as a ground structure (or ground) of the antenna system of the wireless earphone 1, or the ground structure of the antenna system can include the printed circuit board 41, the flexible circuit board 42, the second transmission line 47 and the third transmission line 48. The ground structure is electrically connected with the first antenna 43, the second antenna 45 and the radio frequency module, and serves as a flow path of ground current of the antenna system, which can ensure normal operation of the antenna system.

[0056] As shown in Figure 6 , a part of the printed circuit board 41 can be located on the upper side of the connecting beam 3, and another part can be located on the lower side of the connecting beam 3; a part of the flexible circuit board 42 can be located on the upper side of the connecting beam 3, and another part can be located on the lower side of the connecting beam 3; it can be considered that the second transmission line 47 is located on the lower side of the connecting beam 3, and the third transmission line 48 is located on the upper side of the connecting beam 3. Therefore, it can be considered that a part of the ground structure is located on the upper side of the connecting beam 3, and another part is located on the lower side of the connecting beam 3. In addition, the first antenna 43 is located on the upper side of the connecting beam 3, so the first antenna 43 and a part of the ground structure are both located on the upper side of the connecting beam 3; the second antenna 45 is located on the lower side of the connecting beam 3, so the second antenna 45 and another part of the ground structure are both located on the lower side of the connecting beam 3.

[0057] As shown in Figure 6 , the connecting beam 3 has a symmetry plane S, the first antenna 43 and the second antenna 45 are symmetrically distributed on opposite sides of the symmetry plane S, and the ground structure is also symmetric about the symmetry plane S. As described above, "symmetry" includes strict geometric symmetry, and can also include a certain deviation from strict geometric symmetry.

[0058] Figure 10 It represents the wearing state of the wireless earphone 1 in the left and right ears when viewed from behind the ear. The working principle and technical effects of the wireless earphone 1 will be described below in combination with Figure 10 .

[0059] As shown in Figure 10 , when the wireless earphone 1 is worn on the left ear, the connecting beam 3 faces left. Illustratively, the wireless earphone 1 can control the switch to be in the second state according to the wearing detection result, so as to electrically connect the second antenna 45 with the radio frequency module, so that the wireless earphone 1 communicates through the second antenna 45, wherein the first antenna 43 does not work.

[0060] As shown in Figure 10As shown, when the user takes the wireless earphone 1 off from the left ear and wears it on the right ear, it is equivalent to turning the wireless earphone 1 by 180° in the figure, and the connecting beam 3 is towards the right. At this time, the wireless earphone 1 can control the switch to switch from the second state to the first state according to the wearing detection result, so as to electrically connect the first antenna 43 with the radio frequency module, so that the wireless earphone 1 communicates through the first antenna 43, and the second antenna 45 does not work.

[0061] The left and right ears of the user are approximately axisymmetric. Referring to Figure 10 As shown, since the second antenna 45 and the first antenna 43 are symmetrically distributed, when the wireless earphone 1 is switched from the left ear to the right ear, the positions of the second antenna 45 and the feed point 45a relative to the left ear are basically the same as the positions of the first antenna 43 and the feed point 43a relative to the right ear. Since the positions of the antennas and the feed points relative to the ear, the positions of the ground structures and the ground currents relative to the ear do not change much when the wireless earphone 1 is switched between the left and right ears, the antenna performance of the wireless earphone 1 does not change much between the left and right ears, the antenna patterns are basically the same, and the S11 basically does not produce frequency deviation. Therefore, the antenna performance and the connection experience of the wireless earphone 1 of the embodiment are good.

[0062] The correspondence between the positions of the wireless earphone 1 and the working antennas described above is only an example. It can be understood that when the wireless earphone 1 is worn on the left ear, the first antenna 43 can also be controlled to work by the switch, and the second antenna 45 does not work; when the wireless earphone 1 is worn on the right ear, the second antenna 45 can also be switched to work by the switch, and the first antenna 43 does not work.

[0063] In the embodiment, the second antenna 45 and the first antenna 43 are axisymmetrically distributed, and the ground structure is an axisymmetric structure. These two designs do not need to exist at the same time, for example, only the design of the second antenna 45 and the first antenna 43 being axisymmetrically distributed, or only the design of the ground structure being an axisymmetric structure, so that the problem of inconsistent antenna performance can also be improved. As an example, the two designs can exist at the same time, which can greatly guarantee the antenna performance and the connection experience of the wireless earphone 1.

[0064] In the embodiment, the second antenna 45 and the first antenna 43 do not need to be strictly axisymmetrically distributed, and the ground structure does not need to be strictly an axisymmetric structure. As long as the second antenna 45 and the first antenna 43 are respectively located on opposite sides of the connecting beam 3, and the ground structure is distributed on opposite sides of the connecting beam 3, when the wireless earphone 1 is switched between the left and right ears, the positions of the working antennas relative to the ear change little, and the positions of the ground structures and the ground currents relative to the ear change little, so that the problem of inconsistent antenna performance can be improved.

[0065] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A wireless earphone, characterized in that, the wireless earphone is a behind-the-ear earphone, the wireless earphone comprises a first part, a connecting beam and a second part, the connecting beam is connected between the first part and the second part; the wireless earphone is flipped to switch between wearing on the left ear and the right ear, wherein, when the wireless earphone is worn on the left ear, the connecting beam faces left; when the wireless earphone is worn on the right ear, the connecting beam faces right; the second part comprises a radio frequency module, a switch, a first antenna, a second antenna and a ground structure; the switch is electrically connected with the radio frequency module, the switch is used to be in a first state to make the first antenna electrically connected with the radio frequency module through the switch and make the second antenna disconnected with the radio frequency module; the switch is also used to be in a second state to make the second antenna electrically connected with the radio frequency module through the switch and make the first antenna disconnected with the radio frequency module; the ground structure is electrically connected with the radio frequency module, the first antenna and the second antenna; a part of the ground structure and the first antenna are located on one side of the connecting beam, and another part of the ground structure and the second antenna are located on the other side of the connecting beam. 2.The wireless earphone according to claim 1, characterized in that, the ground structure comprises a printed circuit board, the radio frequency module and the switch are arranged on the printed circuit board, a part of the printed circuit board and the first antenna are located on one side of the connecting beam, and another part of the printed circuit board and the second antenna are located on the other side of the connecting beam. 3.The wireless earphone according to claim 2, characterized in that, the ground structure comprises a flexible circuit board, the flexible circuit board is electrically connected with the printed circuit board, a part of the flexible circuit board and the first antenna are located on one side of the connecting beam, and another part of the flexible circuit board and the second antenna are located on the other side of the connecting beam. 4.The wireless earphone according to claim 3, characterized in that, the first part comprises a loudspeaker, a first transmission line is arranged in the connecting beam, one end of the first transmission line is electrically connected with the loudspeaker; the ground structure comprises a second transmission line and a third transmission line, the second transmission line and the third transmission line are connected with one end of the first transmission line which is away from the loudspeaker, the second transmission line and the third transmission line respectively extend to two sides of the connecting beam, the second transmission line and the second antenna are located on the same side of the connecting beam, and the third transmission line and the first antenna are located on the same side of the connecting beam. 5.The wireless earphone according to any one of claims 1-4, characterized in that, the first antenna and the second antenna are distributed in axial symmetry, and / or the ground structure is an axial symmetric structure. 6.The wireless earphone according to any one of claims 1-4, characterized in that, The switch comprises a first end, a second end and a third end, the first end is electrically connected with the radio frequency module, the second end is electrically connected with the first antenna, and the third end is electrically connected with the second antenna; when the switch is in the first state, the first end is in conduction with the second end; when the switch is in the second state, the first end is in conduction with the third end.

7. The wireless earphone of claim 4, wherein, The second part comprises a battery, the battery is electrically connected with the printed circuit board, and the battery is located in a space surrounded by the printed circuit board, the first antenna, the second antenna, the flexible circuit board, the second transmission line and the third transmission line.

8. The wireless earphone of any one of claims 1-4 or claim 7, wherein, The second part comprises a touch electrode, and the touch electrode is located between the first antenna and the second antenna.

9. The wireless earphone of claim 3, 4 or 7, wherein, The second part comprises a charging electrode, the charging electrode is arranged on the flexible circuit board and is electrically connected with the printed circuit board.

10. The wireless earphone of any one of claims 1-4 or claim 7, wherein, The second part comprises a system on chip, and the radio frequency module is integrated in the system on chip.

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