Wireless earphone and electronic equipment

Abstract

The utility model provides a wireless earphone and electronic equipment, and relates to the technical field of electronic equipment. The wireless earphone comprises a shell, an antenna module, a power supply module, a power supply module and a power supply module, the shell comprises an ear handle shell and an in-ear shell connected to the ear handle shell, and a shielding structure is arranged on the side, facing the head of a user, of the ear handle shell and used for reducing the SAR value of the antenna assembly to the head of the user.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and more particularly to a wireless headset and electronic device. Background Technology

[0002] With the increasing popularity of wireless headphones, their features such as connecting to various terminal devices via Bluetooth technology and ease of use are becoming increasingly favored.

[0003] Because wireless earphones are worn close to the user's ears, the user's head, especially the ear area, has a significant impact on the performance of the built-in antenna, often leading to a serious degradation of Bluetooth performance during actual operation. Utility Model Content

[0004] The purpose of this application is to provide a wireless headset and electronic device, mainly providing the following technical solutions:

[0005] The first aspect of this application provides a wireless earphone, which includes: a housing, wherein an antenna assembly is disposed within the housing;

[0006] The outer casing includes: an ear stem housing and an in-ear housing connected to the ear stem housing. The ear stem housing has a shielding structure on the side facing the user's head to reduce the SAR value of the antenna assembly to the user's head.

[0007] In some modified embodiments of the first aspect of this application, the ear stem housing includes: a first housing portion and a second housing portion, the first housing portion being located on the side close to the ear inlet housing, and the radiating structure of the antenna assembly being connected to the second housing portion; the first housing portion is provided with a shielding structure for reducing the SAR value of the antenna assembly to the user's head.

[0008] In some modified embodiments of the first aspect of this application, the shielding structure is formed by the first shell portion, and the material of the first shell portion is different from that of the second shell portion.

[0009] In some modified embodiments of the first aspect of this application

[0010] In a cross section perpendicular to the extending direction of the ear stem housing, the first shell portion and the second shell portion have the same circumferential extension length.

[0011] The circuit board of the antenna assembly is disposed between the first housing and the second housing.

[0012] In some modified embodiments of the first aspect of this application, the material of the ear canal shell is the same as the material of the first shell portion.

[0013] In some modified embodiments of the first aspect of this application, the material of the ear canal shell is the same as the material of the second shell portion.

[0014] In some modified embodiments of the first aspect of this application

[0015] The ear stem housing and the ear inlet housing are connected by a corner housing, and the corner housing is made of the same material as the second housing.

[0016] The feed spring of the antenna assembly is disposed in the corner housing located between the second housing and the earpiece housing.

[0017] In some modified embodiments of the first aspect of this application, the shielding structure is made of metal.

[0018] In some modified embodiments of the first aspect of this application, the shielding structure is configured as a shielding layer that conforms to the first shell portion and is attached to the surface of the first shell portion.

[0019] A second aspect of this application provides an electronic device, the electronic device comprising: an earphone compartment;

[0020] Two wireless earbuds are accommodated within the earbud housing, and the two wireless earbuds are symmetrically structured to form a left earbud and a right earbud. The wireless earbuds include:

[0021] An outer casing, wherein an antenna assembly is disposed within the outer casing;

[0022] The outer casing includes: an ear stem housing and an in-ear housing connected to the ear stem housing. The ear stem housing has a shielding structure on the side facing the user's head to reduce the SAR value of the antenna assembly. Attached Figure Description

[0023] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application are illustrated by way of example and not limitation, with the same or corresponding reference numerals denoteing the same or corresponding parts, wherein:

[0024] Figure 1 A schematic diagram of the structure of the wireless earphone provided in an embodiment of this application is shown.

[0025] Figure 2 This schematic diagram illustrates the structure of the wireless earphone provided in an embodiment of this application from another angle.

[0026] Figure 3 A schematic cross-sectional view of the wireless earphone provided in an embodiment of this application is shown.

[0027] Figure 4 This schematically illustrates another cross-sectional structural diagram of the wireless earphone provided in an embodiment of this application;

[0028] Figure 5 A schematic diagram illustrating the internal structure of the wireless earphone provided in an embodiment of this application is shown.

[0029] Figure 6 This diagram schematically illustrates a comparison of the reflection coefficients of the antenna assembly of the wireless earphone provided in an embodiment of this application with that of a reference antenna.

[0030] Figure 7 This diagram schematically illustrates a comparison of the overall efficiency of the antenna assembly of the wireless earphone provided in an embodiment of this application with that of a reference antenna.

[0031] Explanation of icon numbers:

[0032] 1. Outer shell; 11. Ear stem shell; 111. First shell part; 112. Second shell part; 12. In-ear shell; 13. Corner shell; 2. Shielding structure; 3. Speaker; 41. Circuit board; 42. Radiation structure; 43. Power supply spring; 5. Rubber plug. Detailed Implementation

[0033] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0034] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0035] Example 1

[0036] Reference Appendix Figure 1 -Appendix Figure 5 Embodiment 1 of this application proposes a wireless earphone, which includes: a shell 1, wherein an antenna assembly is disposed inside the shell 1; the shell 1 includes: an ear stem shell 11 and an in-ear shell 12 connected to the ear stem shell 11, wherein a shielding structure 2 is disposed on the side of the ear stem shell 11 facing the user's head, for reducing the SAR value of the antenna assembly to the user's head.

[0037] Specifically, the wireless earphone provided in this embodiment can establish a connection with a terminal device via Bluetooth to operate, providing users with greater convenience and mobility. The terminal device can be, but is not limited to, a mobile phone, tablet computer, or computer. The wireless earphone includes a housing 1 and an antenna assembly disposed inside the housing 1.

[0038] The antenna assembly can be, but is not limited to, a Bluetooth antenna, but the antenna assembly can take different forms, for example, it can be configured as a monopole antenna without grounding.

[0039] The outer shell 1 comprises two parts: an ear stem shell 11 and an in-ear shell 12, which can be integrally molded. The ear stem shell 11 serves as the handheld and supporting part of the outer shell 1 of the wireless earphone. Its interior can be used to house structures such as batteries and antenna components. It can also integrate touch areas or physical buttons to control audio playback, answer phone calls, and detect the user's wearing status through built-in sensors. The ear stem shell 11 can be cylindrical or stem-shaped for easy gripping and wearing. It may also have a certain internal space and adopt a streamlined or slightly curved design to improve wearing comfort and stability. The in-ear shell 12 is the wearing part of the outer shell 1 of the wireless earphone, which transmits sound to the user's ear. Its interior can be used to house components such as speakers 3 and microphones. The shape of the in-ear shell 12 can be approximately elliptical to better adapt to the contour of the human ear, ensuring comfort and stability during wearing. It can also incorporate flexible rubber plugs 5 or sponge materials at the sound outlet to improve sealing, isolate external noise, and enhance wearing comfort.

[0040] The outer shell 1 can be made of plastic materials, such as PC (Polycarbonate) or ABS (Acrylonitrile (A)-Butadiene (B)-Styrene (S) copolymer), giving it advantages such as high strength, good heat resistance, and ease of molding. However, it is not limited to these materials and can also be made of other dielectric materials. The material of the outer shell 1 is wave-transparent, which does not affect the normal operation of the antenna assembly, ensuring that the antenna assembly can transmit and receive signals normally, and meeting the appearance and performance requirements of the wireless headset. The wireless headset operates by being worn on the user's ear. This means that the user's head, especially the ear, has a significant impact on the performance of the antenna assembly in the wireless headset. Specifically, because the wireless headset is small in size and the user's head has a certain absorption effect on electromagnetic waves, when the antenna assembly is placed near the user's head, the user's head will absorb some electromagnetic waves, thereby weakening the signal strength transmitted and received by the antenna. This can also cause the SAR value of the antenna assembly to exceed the standard for the user's head. Here, SAR value refers to the electromagnetic radiation energy absorbed by a unit mass of human tissue per unit time.

[0041] To mitigate the impact of the user's head on the performance of the antenna assembly, the technical solution adopted in this application includes a shielding structure 2 on the side of the earpiece housing 11 facing the user's head. The shielding structure 2 can reduce the absorption of the radiated electric field of the antenna assembly by the user's head through reflection or absorption of electromagnetic waves, thereby reducing the SAR value of the antenna assembly on the user's head and maintaining the radiation efficiency of the antenna assembly at a high level, thus improving the communication performance of the wireless headset. The shielding structure 2 can be made of conductive materials, such as metal or metal alloys, which can weaken the propagation of electromagnetic waves based on their high conductivity and free electron characteristics. The shielding structure 2 can be disposed inside the earpiece housing 11, or it can also be disposed outside the earpiece housing 11, or the shielding structure 2 can be formed on the side of the earpiece housing 11 facing the user's ear by changing the material of the earpiece housing 11, etc. There are no specific limitations here.

[0042] The antenna assembly of the wireless earphone provided in this embodiment is compared with the reference antenna of a wireless earphone whose shell is entirely made of dielectric material. (Refer to the attached diagram.) Figure 6 This is a schematic diagram comparing the reflection coefficients of the antenna assembly of the wireless earphone provided in this application embodiment with a reference antenna. It shows the reflection coefficients of the two antennas after matching. The horizontal axis of the graph represents frequency, ranging from 2.3 GHz to 2.6 GHz. This range covers the operating frequency band of the Bluetooth communication system. As shown in the graph, the reflection coefficients of the two antennas differ within a specific frequency range, but both operate normally within the Bluetooth frequency band and meet the standing wave recombination requirements, ensuring good matching and transmission efficiency. (Refer to the attached diagram.) Figure 7 This is a schematic diagram comparing the overall efficiency of the antenna assembly of the wireless earphone provided in this application embodiment with that of the reference antenna. The horizontal axis of the graph represents the frequency, ranging from 2.3GHz to 2.6GHz, which covers the operating frequency band of the Bluetooth communication system. The vertical axis represents the overall efficiency value. The higher the line in the graph, the higher the overall efficiency. As can be seen from the graph, the overall efficiency of the antenna assembly is higher than that of the reference antenna throughout the entire radio frequency range, and the overall radiation efficiency of the antenna assembly can be improved by more than 2dB.

[0043] Furthermore, the antenna assembly of the wireless earphone provided in this embodiment is compared with the reference antenna of a wireless earphone whose shell is entirely made of dielectric material at three different channels and frequencies and average power levels. In channel CH 00, with a frequency of 2402MHz and an average power of 1.42dBm, the 1g SAR value of the reference antenna is 1.42W / kg, and the 1g SAR value of the antenna assembly is 0.79W / kg; in channel CH 39, with a frequency of 2441MHz and an average power of 12.5dBm, the 1g SAR value of the reference antenna is 1.54W / kg, and the 1g SAR value of the antenna assembly is 0.94W / kg; in channel CH 78, with a frequency of 2480MHz and an average power of 1.45dBm, the 1g SAR value of the reference antenna is 1.45W / kg, and the 1g SAR value of the antenna assembly is 0.83W / kg. It can be seen that the SAR values ​​of the antenna assembly provided in this embodiment are lower than those of the reference antenna in the above channels; where, 1g... SAR value refers to the average SAR value within a 1-gram tissue volume.

[0044] Further, see attached document. Figure 1 In a specific implementation, the ear stem housing 11 includes: a first housing portion 111 and a second housing portion 112. The first housing portion 111 is located on the side close to the ear housing 12, and the radiation structure 42 of the antenna assembly is connected to the second housing portion 112. The first housing portion 111 is provided with a shielding structure 2 to reduce the SAR value of the antenna assembly to the user's head.

[0045] Specifically, in the technical solution adopted in this application, according to the shielding requirements, the ear stem shell 11 can be divided into a first shell portion 111 and a second shell portion 112. The first shell portion 111 is the part of the ear stem shell 11 near the ear canal shell 12. When the user wears the wireless earphone, the first shell portion 111 is located on the side closer to the user's head, while the second shell portion 112 is located on the side away from the user's head. The two parts can be a separate structure or an integrally formed structure. Since the first shell portion 111 is located on the side facing the user's head, the shielding structure 2 is disposed in the first shell portion 111. To reduce the SAR value of the antenna assembly to the user's head, the shielding structure 2 can be located inside the first shell 111, or it can also be located outside the first shell 111, and can be attached to the surface of the first shell 111, but is not limited thereto; the radiation structure 42 of the antenna assembly is connected to the second shell 112, which can increase the distance between the antenna assembly and the user's head, further reduce the absorption of antenna radiation by the human body, avoid interference of the human body to the signal transmission of the antenna assembly, optimize the signal reception and transmission performance of the antenna assembly, and ensure the stability of the wireless connection and sound quality of the wireless headphones.

[0046] Furthermore, in specific implementations, the shielding structure 2 can be configured in various ways. Two examples of how the shielding structure 2 can be configured are given below:

[0047] The first setup method is as follows: (Refer to the attached document) Figure 1 -Appendix Figure 3 The shielding structure 2 can be part of the outer shell 1, that is, the shielding structure 2 is formed by the first shell part 111. In this case, at least the ear-shaped shell 11 of the outer shell 1 is made of two materials. The material of the first shell part 111 is different from that of the second shell part 112. The first shell part 111 and the second shell part 112, which are made of different materials, can be connected as one piece by means of injection molding or bonding to ensure a tight connection between the first shell part 111 and the second shell part 112. In order to achieve the electromagnetic shielding performance of the first shell part 111, the first shell part 111 can be made of a material that has the shielding performance of electromagnetic waves. For example, the first shell part 111 can be made of a metal material, while the second shell part 112 can be made of a material that has wave transmission properties to ensure that the antenna assembly can transmit and receive signals normally and avoid the signal weakening caused by the shielding of electromagnetic waves. For example, the second shell part 112 can be made of plastic, ceramic and other materials.

[0048] In order to balance the radiation performance of the antenna assembly and the SAR value of the antenna assembly to the user's head, and to avoid the shielding structure 2 being set too large and affecting the radiation performance of the antenna assembly, refer to the appendix. Figure 3 On a cross section perpendicular to the extension direction of the ear stem housing 11, the circumferential extension lengths of the first housing portion 111 and the second housing portion 112 can be set to be the same or substantially the same; and the circuit board 41 of the antenna assembly can be set between the first housing portion 111 and the second housing portion 112. The circuit board 41 is mainly made of dielectric material and has circuit traces inside. The feed spring 43 of the antenna assembly and the antenna are matched and set on the circuit board 41. Setting the circuit board 41 between the first housing portion 111 and the second housing portion 112 allows the radiating structure 42 of the antenna assembly to be located inside the second housing portion 112 and can be arranged as far away from the first housing portion 111 as possible, thereby reducing the influence of the shielding first housing portion 111 on the antenna assembly.

[0049] Furthermore, to improve the comfort and aesthetics of the wireless earphones, the ear stem shell 11 and the in-ear shell 12 are connected by a corner shell 13, and the outer surface of the corner shell 13 can be streamlined. To improve the communication performance of the wireless earphones, the technical solution adopted in this application can be made of the same material as the second shell 112, such as plastic, which has less absorption and reflection of electromagnetic waves, thereby reducing signal loss, improving the transmission and reception efficiency of the antenna assembly, and enhancing the communication performance and stability of the wireless earphones. The material of the in-ear shell 12 can be made of the same material as the first shell 111, such as metal, which gives the in-ear shell 12 the advantages of being lightweight, sturdy and durable. Alternatively, the material of the in-ear shell 12 can be made of the same material as the second shell 112, which helps to reduce signal loss and improve the radiation performance of the antenna assembly. This can be set as needed.

[0050] The second setup method is as follows: (See attached document) Figure 4 The shielding structure 2 can be configured as a structure independent of the first shell portion 111. For example, the shielding structure 2 can be configured as a thin-walled shielding layer. In order to improve the connection effect between the shielding layer and the first shell portion 111 and the shielding effect against electromagnetic waves, the shielding layer can be configured to conform to the shape of the first shell portion 111 and be attached to the surface of the first shell portion 111. Its position can be located on the outer surface of the first shell portion 111, which can reduce the occupancy of the shielding structure 2 on the internal space of the outer shell 1 and help optimize the internal space arrangement of the outer shell 1. Alternatively, the shielding layer can be set on the inner surface of the first shell portion 111, which can reduce the size of the shielding structure. 2. Impact on the appearance of the outer shell 1: The shielding layer can maintain the consistency of the outer shell 1's appearance and improve aesthetics. The shielding layer can cover the entire area of ​​the outer or inner surface of the first shell portion 111 to maximize the shielding effect against electromagnetic waves. Alternatively, the shielding layer can cover a portion of the outer or inner surface of the first shell portion 111 to avoid the shielding structure 2 having an excessively large area that could affect the radiation performance of the antenna assembly. Wherein, when the shielding layer is located on the outer surface of the first shell portion 111, the shielding layer can protrude beyond the outer surface of the outer shell 1. Or, to improve the smoothness and aesthetics of the outer shell 1 surface, as shown in the attached diagram... Figure 4 As shown, the shielding layer can also be embedded in the outer surface of the first shell 111, so that it can be smoothly connected with the outer surface of the outer shell 1.

[0051] When the shielding structure 2 is configured in the first or second manner, or not limited to the above two manners, the shielding structure 2 can be made of metal. The metal contains a large number of free electrons, which move freely in the metal lattice, giving the metal high conductivity. When an electromagnetic wave is incident on the metal surface, the free electrons inside the metal will feel the effect of the electric field and begin to move in the opposite direction to the electric field. This movement forms an induced current, i.e., an "eddy current". The electromagnetic field generated by the eddy current inside the metal is opposite to the direction of the incident electromagnetic wave, thereby weakening the intensity of the incident electromagnetic wave. Most of the electromagnetic wave is reflected back at the metal surface and cannot penetrate the metal. In addition to reflection, the metal will also absorb some of the energy of the electromagnetic wave and convert this energy into the heat energy or other forms of energy of the free electrons inside the metal. The metal used in the shielding structure 2 can be iron, copper, or aluminum, etc., without specific limitations.

[0052] Example 2

[0053] Embodiment 2 of this application proposes an electronic device, which includes: an earphone case; two wireless earphones that can be accommodated in the earphone case, and the two wireless earphones are symmetrically structured to form a left earphone and a right earphone. The wireless earphones include: a housing 1, in which an antenna assembly is disposed; the housing 1 includes: an ear stem housing 11 and an in-ear housing 12 connected to the ear stem housing 11. The ear stem housing 11 has a shielding structure 2 on the side facing the user's head to reduce the SAR value of the antenna assembly to the user's head.

[0054] Specifically, the electronic device provided in this application embodiment can be an earphone device comprising an earphone case and two symmetrically structured wireless earphones. Alternatively, the electronic device can be a mobile phone, tablet computer, or laptop computer, etc., forming a device with built-in wireless earphones by setting an earphone case and two wireless earphones. The earphone case and the device shell can be an integral structure or a detachable split structure. The two wireless earphones can be stored in the earphone case, and their symmetrical structure allows them to be used as the left and right earphones respectively. The shell 1 of the wireless earphone includes an ear stem shell 11 and an in-ear shell 12. A shielding structure 2 is provided on the side of the ear stem shell 11 facing the user's head. The shielding structure 2 can reduce the absorption of the radiated electric field of the antenna assembly by the user's head by reflecting or absorbing electromagnetic waves, thereby reducing the SAR value of the antenna assembly to the user's head and keeping the radiation efficiency of the antenna assembly at a high level, thus improving the communication performance of the wireless earphone.

[0055] The charging case is a container for storing two wireless earbuds. When the earbuds are not in use, they can be stored in the charging case for storage and protection. The charging case can also charge both earbuds at the same time, ensuring that the earbuds always have sufficient power for easy access by the user.

[0056] It should be noted that in the description of this specification, the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application; the terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0057] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer 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.

[0058] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included 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. A wireless earphone, characterized by, The application relates to a wireless earphone.

2. The wireless earphone of claim 1, wherein The ear stem shell comprises a first shell part and a second shell part, the first shell part is located on the side close to the in-ear shell, and the radiating structure of the antenna assembly is connected with the second shell part; and the first shell part is provided with a shielding structure for reducing the SAR value of the antenna assembly on the user's head.

3. The wireless earphone of claim 2, wherein The shielding structure is formed by the first shell part, and the material of the first shell part is different from that of the second shell part.

4. The wireless earphone of claim 2, wherein In the cross section perpendicular to the extension direction of the ear stem shell, the circumferential extension lengths of the first shell part and the second shell part are the same; and the circuit board of the antenna assembly is arranged between the first shell part and the second shell part.

5. The wireless earphone of claim 3, wherein The material of the in-ear shell is the same as that of the first shell part.

6. The wireless earphone of claim 3, wherein The material of the in-ear shell is the same as that of the second shell part.

7. The wireless earphone of claim 2, wherein The ear stem shell and the in-ear shell are connected through a corner shell, the corner shell is made of the same material as the second shell part; and the feeding spring sheet of the antenna assembly is arranged in the corner shell between the second shell part and the in-ear shell.

8. The wireless earphone of claim 1 or 2, wherein The shielding structure is made of metal material.

9. The wireless earphone of claim 2, wherein The shielding structure is arranged as a shielding layer which is formed with the first shell part and attached to the surface of the first shell part. The application relates to a wireless earphone.

2. The wireless earphone of claim 1, wherein The ear stem shell comprises a first shell part and a second shell part, the first shell part is located on the side close to the in-ear shell, and the radiating structure of the antenna assembly is connected with the second shell part; and the first shell part is provided with a shielding structure for reducing the SAR value of the antenna assembly on the user's head.

3. The wireless earphone of claim 2, wherein 10. An electronic device, comprising: The shielding structure is formed by the first shell part, and the material of the first shell part is different from that of the second shell part.

4. The wireless earphone of claim 2, wherein In the cross section perpendicular to the extension direction of the ear stem shell, the circumferential extension lengths of the first shell part and the second shell part are the same; and the circuit board of the antenna assembly is arranged between the first shell part and the second shell part.

5. The wireless earphone of claim 3, wherein The material of the in-ear shell is the same as that of the first shell part.

6. The wireless earphone of claim 3, wherein The material of the in-ear shell is the same as that of the second shell part.

7. The wireless earphone of claim 2, wherein The ear stem shell and the in-ear shell are connected through a corner shell, the corner shell is made of the same material as the second shell part; and the feeding spring sheet of the antenna assembly is arranged in the corner shell between the second shell part and the in-ear shell.

8. The wireless earphone of claim 1 or 2, wherein The shielding structure is made of metal material.

9. The wireless earphone of claim 2, wherein The shielding structure is arranged as a shielding layer which is formed with the first shell part and attached to the surface of the first shell part.

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