Earphone

Abstract

The utility model provides an earphone which comprises an antenna module, the antenna module comprises an antenna, a mainboard and a switching device, a first end of the switching device is electrically connected with a radio frequency feed source, a second end of the switching device is electrically connected with a first feed end of the antenna, and a third end of the switching device is electrically connected with a second feed end of the antenna. The fourth end of the switching device is connected with the grounding end; in the first state, the first feed end is electrically connected with the radio frequency feed source through the switching device, and the second feed end is grounded through the switching device, so that the antenna has a first radiation state; in the second state, the first feed end is grounded through the switching device, and the second feed end is electrically connected with the radio frequency feed source through the switching device, so that the antenna has a second radiation state; the radiation pattern of the first radiation state is different from that of the second radiation state. By arranging the switching device, the antenna can be switched between the first radiation state and the second radiation state, antenna pattern complementation can be effectively carried out, the radiation performance is improved, and the sound production lagging of the earphone is reduced.

Description

Technical Field

[0001] This utility model relates to the field of headphone equipment technology, and specifically to a headphone. Background Technology

[0002] With the rapid development of TWS (True Wireless Stereo) earphone technology, open-back designs have become widely popular due to their excellent wearing comfort. Currently, open-back earphones can be divided into two design types: ear-hook and clip-on. Both operate on the same principle as in-ear earphones, but ear-hook earphones are suspended outside the concha with silicone ear hooks, while clip-on earphones are clipped onto the auricle. In open-back earphone design, small size and lightness are fundamental requirements; however, this compact design also presents technical challenges: limited space restricts antenna size, thus affecting wireless transmission performance. When users play high-bitrate audio, a smaller antenna can easily lead to signal instability, causing problems such as music stuttering. Utility Model Content

[0003] The purpose of this invention is to provide an earphone that solves the problem of unstable signal caused by the limited antenna size in existing earphones.

[0004] On one hand, this application provides an earphone, including an antenna module, the antenna module comprising:

[0005] The antenna has a first feed terminal and a second feed terminal;

[0006] The motherboard includes the grounding terminal and the RF feed.

[0007] A switching device, wherein a first terminal of the switching device is electrically connected to the radio frequency feed, a second terminal of the switching device is electrically connected to the first feed terminal, a third terminal of the switching device is electrically connected to the second feed terminal, and a fourth terminal of the switching device is connected to the ground terminal; the switching device has a first state and a second state.

[0008] In the first state, the first feed terminal is electrically connected to the radio frequency feed source through the switching device, and the second feed terminal is grounded through the switching device, so that the antenna has a first radiation state;

[0009] In the second state, the first feed terminal is grounded through the switching device, and the second feed terminal is electrically connected to the radio frequency feed source through the switching device, so that the antenna has a second radiation state;

[0010] The radiation patterns of the first radiation state and the second radiation state are different.

[0011] Furthermore, the antenna includes a first radiating conductor and a second radiating conductor, which are spaced apart; the first radiating conductor has a first feed terminal, and the second radiating conductor has a second feed terminal.

[0012] Furthermore, the side of the first radiating conductor away from the second radiating conductor is the first radiating portion, and the first radiating portion is arranged at an angle;

[0013] The side of the second radiating conductor away from the first radiating conductor is the second radiating part, and the second radiating part is inclined.

[0014] The tilt direction of the first radiating part is set at an angle to the tilt direction of the second radiating part.

[0015] Furthermore, the first radiating portion is arc-shaped, and / or the second radiating portion is arc-shaped.

[0016] Furthermore, the switching device is located on the motherboard;

[0017] The first feed terminal is located at the end of the first radiating conductor that is away from the second radiating conductor, and the first feed terminal is electrically connected to the second terminal of the switching device through a first spring contact.

[0018] The second feed terminal is located at the end of the second radiating conductor away from the first radiating conductor, and the second feed terminal is electrically connected to the third terminal of the switching device through the second spring contact.

[0019] Furthermore, the first radiating conductor, the second radiating conductor, the first spring piece, and the second spring piece together form an accommodating cavity;

[0020] The earphones also include a battery disposed within the accommodating cavity.

[0021] Furthermore, the distance between the first radiating conductor and the battery ranges from 0.5 to 2 mm;

[0022] And / or, the distance between the second radiating conductor and the battery is in the range of 0.5-2 mm.

[0023] Furthermore, the earphone also includes a mounting cover, which is fastened to the main board to form a mounting cavity; the first radiating conductor and the second radiating conductor are located inside the mounting cavity and are respectively attached to the inner wall of the mounting cover.

[0024] Furthermore, the earphone also includes a first magnet and a second magnet. The first magnet is disposed between the motherboard and the first radiating conductor and connected to the mounting cover; the second magnet is disposed between the motherboard and the second radiating conductor and connected to the mounting cover.

[0025] Furthermore, the motherboard also includes a chip having an input / output interface and the radio frequency feed. The input / output interface is electrically connected to the switching device and is used to control the switching device (3) to switch to the first state or the second state.

[0026] Furthermore, the earphone also includes a signal detection device, which is electrically connected to the chip and is used to detect the received signal strength value of the antenna in a first radiation state and a second radiation state.

[0027] Furthermore, the switching device is a double-pole double-throw switch.

[0028] Furthermore, the headphones also include:

[0029] The antenna module is located inside the battery compartment.

[0030] The sound-producing section is equipped with sound-generating devices;

[0031] The connecting part has two ends connected to the battery compartment and the sound-emitting part, respectively; the connecting part is provided with a connector, and the two ends of the connector are connected to the antenna module and the sound-emitting device, respectively.

[0032] The technical solution provided in this application has the following advantages compared with the prior art:

[0033] In the technical solution of this application, the antenna module of the earphone includes an antenna and a switching device. The antenna has a first feed terminal and a second feed terminal; the antenna has a first radiation state and a second radiation state. The first feed terminal and the second feed terminal are electrically connected to the switching device respectively; the switching device has a first state and a second state. When the switching device is in the first state, the antenna is in the first radiation state; when the switching device is in the second state, the antenna is in the second radiation state; wherein, in the first radiation state, the first feed terminal of the antenna is electrically connected to the radio frequency feed source through the switching device, and the second feed terminal of the antenna is grounded through the switching device; in the second radiation state, the second feed terminal of the antenna is electrically connected to the radio frequency feed source through the switching device, and the first feed terminal of the antenna is grounded through the switching device. Thus, by setting a switching device, this application allows the antenna to switch between a first radiation state and a second radiation state, that is, to use a switching device to change the antenna shape. Since the radiation patterns of the first and second radiation states are different, the antenna patterns can be effectively complementary. In different usage scenarios, the first or second radiation state can be switched so that the headphones are in the optimal radiation state, which can significantly improve signal strength and provide a better radio frequency experience for users. It can not only meet the needs of high-quality Bluetooth music transmission, but also adapt to long-distance usage scenarios, significantly improving the signal reception experience for users in various usage environments. Furthermore, the switching of different radiation patterns can be achieved through the same antenna, which can reduce the space occupied by the antenna and meet the miniaturization requirements of headphones. Attached Figure Description

[0034] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0035] 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, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0037] Figure 1 This application provides a schematic diagram of the structure of an ear clip-on earphone according to an embodiment of the present application;

[0038] Figure 2 for Figure 1 A schematic diagram of the structure behind the concealed mounting cover;

[0039] Figure 3 for Figure 2 A schematic diagram of the structure of section M;

[0040] Figure 4 This is a circuit connection diagram of the antenna module provided in the embodiments of this application;

[0041] Figure 4A for Figure 4 A schematic diagram of the switching device in its first state;

[0042] Figure 4B for Figure 4 A schematic diagram of the switching device in the second state;

[0043] Figures 5A-5C A schematic diagram of the radiation pattern of the antenna module provided in the embodiments of this application and the radiation pattern of the antenna module in the prior art;

[0044] Figure 6 This application provides a schematic diagram of the usage state of an ear clip-on earphone.

[0045] Explanation of reference numerals in the attached figures:

[0046] Antenna module 100,

[0047] Antenna 1, first feed terminal 1a, second feed terminal 1b, first radiating conductor 11, first radiating part 111, second radiating conductor 12, second radiating part 121, first spring 13, second spring 14, isolator 15.

[0048] Chip 2, RF feed 21, Input / output interface 22

[0049] Switching device 3, first end 31, second end 32, third end 33, fourth end 34, enable pin 35.

[0050] 4. Motherboard; 5. Battery; 6. Mounting cover; 71. First magnet; 72. Second magnet.

[0051] Battery compartment 400, sound-generating device 200, connector 300, flexible component 301, ribbon cable 302, external equipment 500. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0053] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0054] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0055] This application provides an earphone, particularly an ear clip-on earphone, but other types of earphones are also possible. (See reference) Figure 6 The earcup-style earphones can be clipped onto the user's ear and can communicate with external devices 500 (such as mobile phones, tablets, etc.) via the antenna module 100. The earphones are controlled by signals emitted from the external device. The antenna module 100 can also transmit signals. (Reference) Figure 1 The earcup-style earphone includes a sound-generating part, a connecting part, and a battery compartment 400. The two ends of the connecting part are connected to the sound-generating part and the battery compartment 400, respectively. The sound-generating part is equipped with a sound-emitting device 200 for emitting sound; the battery compartment 400 contains an antenna module 100 for receiving signals emitted by an external device 500. (Reference) Figure 6 When the user wears the ear clip-on headphones, the connecting part is clipped to the user's ear, the sound-emitting part is placed in front of the user's ear, and the battery compartment 400 is placed behind the user's ear.

[0056] refer to Figures 1 to 2The diagram shows the structure of the battery compartment, connecting part, and sound-emitting part after removing the outer casing. The connecting part has a connector 300, which includes a flexible member 301 and a ribbon cable 302. The two ends of the ribbon cable 302 are connected to the sound-emitting device 200 in the sound-emitting part and the mainboard 4 in the battery compartment, respectively, to achieve signal transmission.

[0057] It should be noted that the flexible component 301 is connected to the sound-generating part and the battery compartment at its two ends, respectively, and can be bent or bent when the earphone is clamped to the ear to improve clamping performance. In this embodiment, the flexible component 301 may be made of titanium.

[0058] In the technical solution of this application embodiment, the antenna module 100 includes an antenna 1, a main board 4, and a switching device 3. (See reference...) Figure 3 , Figure 4 , Figure 4A , Figure 4B and Figure 6 Antenna 1 has a first feed terminal 1a and a second feed terminal 1b; motherboard 4 includes a ground terminal and an RF feed source 21; switching device 3 has a first state and a second state, the first terminal 31 of the switching device 3 is electrically connected to the RF feed source 21, the second terminal 32 of the switching device 3 is electrically connected to the first feed terminal 1a, the third terminal 33 of the switching device 3 is electrically connected to the second feed terminal 1b, and the fourth terminal 34 of the switching device 3 is connected to the ground terminal; the switching device has a first state and a second state.

[0059] Among them, reference Figure 4A When the switching device 3 is in the first state, the first end 31 of the switching device 3 is connected to the second end 32, and the third end 33 of the switching device 3 is connected to the second feed end 1b. In this way, the first feed end 1a is electrically connected to the radio frequency feed source 21 through the switching device 3, and the second feed end 1b is grounded through the switching device 3, so that the antenna 1 has a first radiation state.

[0060] refer to Figure 4B When the switching device 3 is in the first state, the first end 31 of the switching device 3 is connected to the second end 32, and the third end 33 of the switching device 3 is connected to the second feed end 1b. In this way, the second feed end 1b is electrically connected to the radio frequency feed source through the switching device 3; the first feed end 1a is grounded through the switching device 3, so that the antenna 1 has a second radiation state.

[0061] When the first feed terminal 1a or the second feed terminal 1b of antenna 1 is connected to the radio frequency feed source 21, electrical energy can be output from the transmitter to antenna 1, thereby realizing signal transmission.

[0062] This embodiment uses switching device 3 to switch between the feed point and the ground point, allowing for significant changes in the configuration of the same antenna 1. Switching device 3 enables the reconfigurability of antenna 1; by feeding different ports, different resonant components or modes on antenna 1 are excited, resulting in different surface field distributions and thus different radiation patterns. Furthermore, since the radiation patterns of the first and second radiation states differ, at a certain angle, when the radiation capability of the first radiation state is weaker than that of the second radiation state, the switching device 3 can switch antenna 1 to the second radiation state. This achieves complementarity and prevents issues such as stuttering during headphone use.

[0063] This application, by setting a switching device 3, enables antenna 1 to switch between a first radiation state and a second radiation state. In other words, the switching device 3 significantly transforms the shape of antenna 1, effectively enabling antenna 1 radiation pattern complementarity. In different usage scenarios, the radiation state can be switched to ensure that the headphones are in the optimal radiation state, which can significantly improve signal strength and provide a better user radio frequency experience. It not only meets the requirements of high-quality Bluetooth music transmission but also adapts to long-distance usage scenarios, significantly improving the user's signal reception experience in various usage environments. Furthermore, the switching of different radiation patterns can be achieved through the same antenna 1, which can reduce the space occupied by antenna 1 and meet the miniaturization requirements of headphones.

[0064] In this embodiment, reference Figure 6 When the ear clip-on headphones are worn on the user's ears, the first feed terminal 1a and the second feed terminal 1b of the antenna are arranged vertically. In this way, the radiation pattern of the antenna in the first radiation state and the radiation capability of the antenna in the second radiation state will be significantly different. Thus, the antenna pattern can be effectively complementary. In different usage scenarios, the radiation state can be switched so that the headphones are in the optimal radiation state, which can significantly improve the signal strength and provide a better radio frequency experience for the user.

[0065] For example, refer to Figures 5A-5C The diagram shows the radiation pattern (S1) under the first radiation state, the radiation pattern (S2) under the second radiation state, and the radiation pattern (old) using a monopole antenna in the prior art. In the antenna's radiation pattern, θ (theta) and... (phi) are two angles used to describe the direction of antenna radiation.

[0066] θ (Theta): θ represents the elevation angle in the antenna radiation pattern, ranging from 0 to 180 degrees. It is the angle from the antenna's main beam pointing towards the ground plane. When θ is 0 degrees, it means the antenna's main beam is pointing horizontally towards the antenna, while an increase or decrease in θ represents the elevation angle of the main beam upwards or downwards.

[0067] (Phi): This represents the azimuth angle in the antenna radiation pattern, ranging from 0 to 360 degrees. It is measured on the ground plane and represents the horizontal deflection angle of the antenna's main beam. It is usually defined relative to a reference direction (such as north).

[0068] Figure 5A The left half shows the radiation pattern with phi = 0° and Theta ranging from 0 to 180 degrees. Figure 5A The right half shows the radiation pattern with phi=180° and Theta from 0 to 180 degrees.

[0069] Figure 5B The left half shows the radiation pattern with phi = 90° and Theta ranging from 0 to 180 degrees. Figure 5B The right half shows the radiation pattern with phi=270° and Theta from 0 to 180 degrees.

[0070] Figure 5C The left half is the radiation pattern with Theta = 90° and phi from 0 to 360 degrees.

[0071] In this context, the first state corresponds to S1, the second state corresponds to S2, and the existing technology corresponds to old. Obviously, whether it is S1 or S2, the antenna radiation intensity is better than that of the old state in the effective radiation direction. Moreover, S1 and S2 have good complementarity at certain angles. S1 has a stronger forward radiation capability, while S2 has a better close-range effect.

[0072] In real-world scenarios, the headphones can select the optimal state based on the location of the external device (such as a mobile phone). Referring to 5A, in the radiation direction where phi=90° and Theta=120°, the headphones will switch to state S1; in the radiation direction where phi=90° and Theta=150°, the headphones will switch to state S2.

[0073] refer to Figure 4In this embodiment, the motherboard includes a chip 2, which has a radio frequency (RF) port, i.e., an RF feed source 21. In one embodiment, the chip 2 is a System on Chip (SOC). The RF feed source 21 is electrically connected to the switching device 3; the chip 2 also has an input / output interface 22, which is electrically connected to the switching device 3 and is used to control the switching device 3 to switch to a first state or a second state. In one embodiment, the input / output interface 22 is a general-purpose input / output (GPIO) interface of the SOC chip 2, or other interfaces that can output control signals.

[0074] refer to Figure 4 The input / output interface 22 of chip 2 is connected to the enable pin 35 of switching device 3, which can realize automatic control of the switching action of switching device 3.

[0075] In the technical solution of this embodiment, the antenna module further includes a signal detection device, which is electrically connected to the chip and is used to detect the received signal strength value of the antenna in a first radiation state and a second radiation state.

[0076] In the technical solution of this embodiment, the chip 2 is configured to perform the following steps:

[0077] Step S1: Obtain the first received signal strength value when the antenna 1 is in the first radiation state and the second received signal strength value when the antenna 1 is in the second radiation state;

[0078] In the field of wireless communication, RSSI (Received Signal Strength Indicator) is a very important parameter used to represent the strength of the received signal. RSSI values ​​are typically given in decibels (dBm) or as a percentage, and are used to assess signal quality and range.

[0079] When the external device (e.g., a mobile phone) connected to the headset is in different locations, the first received signal strength value of antenna 1 in the first radiation state and the second received signal strength value in the second radiation state may be different or the same. (Refer to...) Figure 5A , Figure 5B and Figure 5C First received signal strength value and second received signal strength value

[0080] Step S2: Compare the acquired first received signal strength value and the second received signal strength value.

[0081] If the first received signal strength value is greater than the second received signal strength value, the switching action of the switching device 3 is controlled so that the antenna 1 is in the first radiation state;

[0082] If the second received signal strength value is greater than the first received signal strength value, the switching action of the switching device 3 is controlled so that the antenna 1 is in the second radiation state.

[0083] In this way, antenna 1 can always be in the optimal radiation state, thus avoiding the problem of the headphones stuttering due to poor signal.

[0084] In the technical solution of this embodiment, step S1 includes:

[0085] Step S11: Determine the current radiation state of the antenna 1 and obtain the received signal strength value of the antenna 1 when it is in the current radiation state; the radiation state includes the first radiation state and the second radiation state;

[0086] Step S12: Control the switching device 3 to perform a switching action to switch the radiation state of the antenna 1, and obtain the received signal strength value of the antenna 1 when it is in the switched radiation state.

[0087] Specifically, when the first feed terminal 1a is connected to the RF feed source 21 and the second feed terminal 1b is grounded, the current radiation state of antenna 1 is the first radiation state, and the first received signal strength value is obtained at this time. Then, the switching device 3 connects the second feed terminal 1b to the RF feed source 21 and grounds the first feed terminal 1a, switching antenna 1 to the second radiation state and obtaining the second received signal strength value.

[0088] If the second received signal strength value is greater than or equal to the first received signal strength value, the switching device 3 remains stationary, so that the antenna 1 remains in the second radiation state.

[0089] If the strength of the second received signal is less than the strength of the first received signal, the switching device 3 switches, causing the antenna 1 to switch to the first radiation state.

[0090] When the second feed terminal 1b is connected to the RF feed source 21 and the first feed terminal 1a is grounded, the current radiation state of antenna 1 is the second radiation state, and the second received signal strength value is obtained at this time. Then, the switching device 3 connects the first feed terminal 1a to the RF feed source 21 and grounds the second feed terminal 1b, switching antenna 1 to the first radiation state and obtaining the first received signal strength value.

[0091] If the first received signal strength value is greater than or equal to the second received signal strength value, the switching device 3 remains stationary, so that the antenna 1 remains in the first radiation state.

[0092] If the strength of the first received signal is less than the strength of the second received signal, the switching device 3 will switch the antenna 1 to the second radiation state.

[0093] like Figure 2 , Figure 3 and Figure 4 As shown, in the technical solution of this embodiment, the antenna 1 includes a first radiating conductor 11 and a second radiating conductor 12, which are arranged at intervals; the first radiating conductor 11 has a first feed terminal 1a, and the second radiating conductor 12 has a second feed terminal 1b.

[0094] It is understood that the first radiating conductor 11 and the second radiating conductor 12 are arranged at intervals to form an antenna 1 that can generate radiation. The first feed end 1a and the second feed end 1b are located at the first radiating conductor 11 and the second radiating conductor 12, respectively. That is, the feed point and the ground point are located at the first radiating conductor 11 and the second radiating conductor 12, respectively. When the antenna 1 is in the first radiation state and the second radiation state, the feed point of the antenna 1 is different, and different radiation patterns can be generated.

[0095] In other embodiments, the antenna 1 may also be an antenna configuration comprising a single radiating conductor.

[0096] like Figure 2 As shown in the technical solution of this embodiment, the side of the first radiating conductor 11 away from the second radiating conductor 12 is the first radiating part 111, which is inclined; the side of the second radiating conductor 12 away from the first radiating conductor 11 is the second radiating part 121, which is also inclined; wherein, the inclined direction of the first radiating part 111 and the inclined direction of the second radiating part 121 form an angle. The inclined arrangement can reduce space occupation and adapt to the shape design of the earphone's battery compartment, making the battery compartment aesthetically pleasing.

[0097] like Figure 2 and Figure 3 As shown, in the technical solution of this embodiment, the first radiating conductor 11 and the second radiating conductor 12 are connected by an isolator 15. In this way, by setting an isolation space between the first radiating conductor 11 and the second radiating conductor 12 in a coupled manner, the antenna radiation efficiency can be improved.

[0098] like Figure 2 As shown, in the technical solution of this embodiment, the first radiating part 111 is arc-shaped, and the second radiating part 121 is arc-shaped.

[0099] Understandably, the curved surface design can expand the radiation area and direction, thereby improving the radiation effect of antenna 1.

[0100] In the technical solution of this embodiment, such as Figure 3 As shown, the switching device 3 is located on the motherboard 4; the motherboard 4 provides an installation position for the switching device 3.

[0101] The first power supply terminal 1a is located at the end of the first radiating conductor 11 away from the second radiating conductor 12, and the first power supply terminal 1a is electrically connected to the second terminal 32 of the switching device 3 through the first spring contact 13;

[0102] The second feed terminal 1b is located at the end of the second radiating conductor 12 away from the first radiating conductor 11, and the second feed terminal 1b is electrically connected to the third terminal 33 of the switching device 3 through the second spring contact 14.

[0103] Understandably, the design of both the first feed terminal 1a and the second feed terminal 1b at the far end allows the antenna 1 to have a greater difference in shape between the first and second radiation states, thereby improving the complementarity of the radiation patterns.

[0104] The first spring 13 and the second spring 14 respectively realize the electrical connection between the first feed terminal 1a and the second feed terminal 1b and the switching current. The first spring 13 and the second spring 14 can support the antenna 1 at a certain height. In this way, the position of the antenna 1 can be flexibly designed in the battery compartment of the earphone to make reasonable use of space.

[0105] like Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the first radiating conductor 11, the second radiating conductor 12, the first spring piece 13, and the second spring piece 14 enclose a receiving cavity. The earphone also includes a battery 5, which is disposed within the receiving cavity. This allows for efficient use of space and enables the miniaturization of the earphone.

[0106] In this embodiment, the distance between the first radiating conductor 11 and the battery 5 is 0.5-2mm. It is understood that setting the distance between the first radiating conductor 11 and the battery 5 within the range of 0.5-2mm can, on the one hand, minimize the impact of the battery 5 on the antenna 1, meeting the wiring requirements of the antenna 1, and on the other hand, make full use of space.

[0107] like Figure 3As shown, in this embodiment, the distance between the second radiating conductor 12 and the battery 5 is 0.5-2mm. It is understood that setting the distance between the second radiating conductor 12 and the battery 5 within the range of 0.5-2mm can, on the one hand, minimize the impact of the battery 5 on the antenna 1 and meet the wiring requirements of the antenna 1, and on the other hand, make full use of space.

[0108] like Figure 1 As shown, the technical solution of this embodiment also includes a mounting cover 6, which is fastened to the motherboard 4 to form a mounting cavity; the first radiating conductor 11 and the second radiating conductor 12 are located inside the mounting cavity and are respectively attached to the inner wall of the mounting cover 6. In this way, the mounting cover 6 can protect the antenna 1.

[0109] To enhance the electromagnetic effect of antenna module 100, such as Figure 1 and Figure 2 As shown, the technical solution of this embodiment also includes a first magnet 71 and a second magnet 72. The first magnet 71 is disposed between the motherboard 4 and the first radiating conductor 11 and connected to the mounting cover 6; the second magnet 72 is disposed between the motherboard 4 and the second radiating conductor 12 and connected to the mounting cover 6. The mounting cover 6 provides mounting positions for the first magnet 71 and the second magnet 72.

[0110] In this embodiment, the switching device 3 is a double-pole double-throw switch. Double-pole double-throw switches have a simple and compact design, making them particularly suitable for limited spaces. Furthermore, they enable seamless switching.

[0111] It should be noted that in some other embodiments, the switching device 3 can also be other switches, such as two single-pole double-throw switches connected in parallel, or an integrated chip (such as CD4066, ADG1436) can be used to switch multiple signals.

[0112] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0113] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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, they should not be construed as limitations on this application.

[0114] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0115] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0116] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0117] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0118] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0119] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An earphone, comprising an antenna module, characterized in that, The antenna module includes: The antenna has a first feed terminal and a second feed terminal; The motherboard includes the grounding terminal and the RF feed. A switching device, wherein a first terminal of the switching device is electrically connected to the radio frequency feed, a second terminal of the switching device is electrically connected to the first feed terminal, a third terminal of the switching device is electrically connected to the second feed terminal, and a fourth terminal of the switching device is connected to the ground terminal; the switching device has a first state and a second state. In the first state, the first feed terminal is electrically connected to the radio frequency feed source through the switching device, and the second feed terminal is grounded through the switching device, so that the antenna has a first radiation state; In the second state, the first feed terminal is grounded through the switching device, and the second feed terminal is electrically connected to the radio frequency feed source through the switching device, so that the antenna has a second radiation state; The radiation patterns of the first radiation state and the second radiation state are different.

2. The earphone according to claim 1, characterized in that, The antenna includes a first radiating conductor and a second radiating conductor, which are spaced apart; the first radiating conductor has a first feed terminal, and the second radiating conductor has a second feed terminal.

3. The earphone according to claim 2, characterized in that, The side of the first radiating conductor away from the second radiating conductor is the first radiating part, and the first radiating part is inclined. The side of the second radiating conductor away from the first radiating conductor is the second radiating part, and the second radiating part is inclined. The tilt direction of the first radiating part is set at an angle to the tilt direction of the second radiating part.

4. The earphone according to claim 3, characterized in that, The first radiating part is arc-shaped, and / or the second radiating part is arc-shaped.

5. The earphone according to claim 2, characterized in that, The switching device is located on the motherboard; The first feed terminal is located at the end of the first radiating conductor that is away from the second radiating conductor, and the first feed terminal is electrically connected to the second terminal of the switching device through a first spring contact. The second feed terminal is located at the end of the second radiating conductor away from the first radiating conductor, and the second feed terminal is electrically connected to the third terminal of the switching device through the second spring contact.

6. The earphone according to claim 5, characterized in that, The first radiating conductor, the second radiating conductor, the first spring piece, and the second spring piece enclose and form an accommodating cavity; The earphones also include a battery disposed within the accommodating cavity.

7. The earphone according to claim 6, characterized in that, The distance between the first radiating conductor and the battery ranges from 0.5 to 2 mm; And / or, the distance between the second radiating conductor and the battery is in the range of 0.5-2 mm.

8. The headphones according to claim 5, characterized in that, The earphone also includes a mounting cover, which is fastened to the main board to form a mounting cavity; the first radiating conductor and the second radiating conductor are located in the mounting cavity and are respectively attached to the inner wall of the mounting cover.

9. The earphone according to claim 8, characterized in that, The earphone also includes a first magnet and a second magnet. The first magnet is disposed between the motherboard and the first radiating conductor and connected to the mounting cover; the second magnet is disposed between the motherboard and the second radiating conductor and connected to the mounting cover.

10. The earphone according to any one of claims 1 to 9, characterized in that, The motherboard also includes a chip with an input / output interface and the radio frequency feed source. The input / output interface is electrically connected to the switching device and is used to control the switching device to switch to the first state or the second state.

11. The earphone according to claim 10, characterized in that, The earphone also includes a signal detection device, which is electrically connected to the chip. The signal detection device is used to detect the received signal strength value of the antenna in a first radiation state and a second radiation state.

12. The earphone according to any one of claims 1 to 9, characterized in that, The switching device is a double-pole double-throw switch.

13. The headphones according to any one of claims 1 to 9, characterized in that, The headphones also include: The antenna module is located inside the battery compartment. The sound-producing section is equipped with sound-generating devices; The connecting part has two ends connected to the battery compartment and the sound-emitting part, respectively; the connecting part is provided with a connector, and the two ends of the connector are connected to the antenna module and the sound-emitting device, respectively.

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