Wireless earphone

Abstract

The utility model provides a wireless earphone, comprising a housing, the housing comprises an upper housing and a lower housing, the upper housing and the lower housing are fixedly connected and define a cavity, and the upper housing is made of transparent glass; the main board is arranged in the cavity, and a feeding point and a grounding point are arranged on the main board; one end of the printed antenna is connected with the feeding point, the other end of the printed antenna is connected with a grounding point, and the printed antenna is printed on the upper shell. According to the wireless earphone provided by the utility model, the antenna can be arranged on the shell made of the glass material, so that the performance of the antenna is improved, and the efficiency of the antenna is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wireless earphone technical field especially relates to a wireless earphone. BACKGROUND

[0002] In prior art, wireless earphone especially for wireless stereo earphone is miniaturized, so that it causes great difficulty to the design of circuit board. When setting the antenna in the earphone, in order to make the antenna away from the electronic elements on the circuit board and reduce the interference of the electronic elements on the circuit board to the antenna signal, the main body of the antenna is usually set on the shell. But some shells are usually set with transparent material in order to make the structure inside the earphone be seen, which is usually set with glass material. But when the shell is set with glass material, the main body of the antenna cannot be set on the shell by pasting and fixing, so a wireless earphone is needed, which can set the antenna on the shell of glass material. SUMMARY

[0003] The utility model aims at solving one of the technical problems in prior art. For this purpose, the utility model provides a wireless earphone, which can set the antenna on the shell of glass material, improve the performance of the antenna and improve the efficiency of the antenna.

[0004] According to the wireless earphone of the first aspect of the utility model, the shell includes an upper shell and a lower shell, the upper shell and the lower shell are fixedly connected and limit a cavity, and the upper shell is transparent glass. The main board is set in the cavity, and the main board is provided with a feeding point and a grounding point. One end of the printed antenna is connected with the feeding point, the other end of the printed antenna is connected with the grounding point, and the printed antenna is printed on the upper shell.

[0005] According to the wireless earphone of the first aspect of the utility model, at least the following beneficial effects are achieved: the printed antenna is printed on the upper shell by the printing equipment, the circuit is printed and the printed antenna is formed, so that the antenna can be directly set on the upper shell of glass material, the antenna can be set with a larger size, the distance between the antenna and the electronic elements on the main board is farther, the performance of the antenna is improved, and the efficiency of the antenna is improved.

[0006] According to some embodiments of the utility model, the printed antenna includes a main body, a first connecting part and a second connecting part, the first connecting part and the second connecting part are arranged on the main body, the first connecting part is connected with the feeding point, the second connecting part is connected with the grounding point, and the main body is printed on the inner side of the upper shell.

[0007] According to some embodiments of the utility model, the edge of the main board is attached to the edge of the shell, and the main body is arranged along the edge of the main board.

[0008] According to some embodiments of the present application, the distance between the main body and the main plate is not less than 1.5mm.

[0009] According to some embodiments of the present application, the first connecting part and the feeding point are connected by welding, and the second connecting part and the grounding point are connected by welding.

[0010] According to some embodiments of the present application, the upper shell is arranged on the side of the lower shell away from the human body.

[0011] According to some embodiments of the present application, the upper shell comprises a top surface part and a side surface part, the main plate is attached to the inner side of the side surface part, the main body is arranged on the side surface part, and the top surface part is arranged on the side of the side surface part away from the lower shell.

[0012] According to some embodiments of the present application, a touch area is arranged on the main plate, the touch area is used for arranging a control element, and the distance between the touch area and the main body is not less than 5mm.

[0013] According to some embodiments of the present application, the width of the main body is not less than 0.5mm and not more than 1.0mm, and the width direction is the direction from the main plate to the top surface part.

[0014] According to some embodiments of the present application, the length of the main body is not less than 2 / 3 of the length of the edge of the main plate.

[0015] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a structural schematic view of a shell of a wireless earphone according to the present application;

[0017] Figure 2 FIG. 3 is a structural schematic view of an antenna of a wireless earphone according to the present application;

[0018] Figure 3 FIG. 5 is a structural schematic view of a main plate of a wireless earphone according to the present application;

[0019] Figure 4 FIG. 7 is a structural schematic view of a right earphone of a wireless earphone according to the present application.

[0020] REFERENCE NUMERALS:

[0021] 1, housing; 11, upper shell; 12, lower shell; 13, top surface portion; 14, side surface portion; 15, cavity; 2, main plate; 21, feeding point; 22, grounding point; 23, touch area; 3, printed antenna; 31, main body; 32, first connecting portion; 33, second connecting portion. DETAILED DESCRIPTION

[0022] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and should not be understood as limiting the present application.

[0023] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as limiting the present application.

[0024] In the description of the present application, the plural means more than two. If there is a description of first, second, it is only for the purpose of distinguishing technical features, and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of technical features indicated.

[0025] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0026] The antenna used in the wireless earphone is usually divided into ceramic antenna, FPC antenna (flexible antenna) and LDS antenna.

[0027] A flexible antenna is an antenna with bending, stretching, and bendable characteristics. Its design concept is to provide flexibility and adaptability of the antenna by using flexible materials and special structures, so that it can adapt to different application environments and needs. Its main features include: bending performance: can be curved in a curved shape without losing performance. Stretching performance: has a certain stretching ability to adapt to different size requirements. Bendability: the overall structure is soft and easy to adapt to various curved surfaces and complex environments. Flexible antennas are made of a variety of materials, including conductive polymers, conductive fibers, and conductive nanomaterials. These materials have good flexibility and plasticity, and can adapt to the curves of the body and various complex environments. In terms of manufacturing technology, flexible antennas can use wet etching, inkjet printing, screen printing, and other methods. Among them, inkjet printing and screen printing are two widely used flexible antenna preparation methods that can precisely control the pattern of conductive materials on flexible substrates to achieve high-performance flexible antennas.

[0028] Ceramic antennas use high-quality ceramic materials such as alumina and zirconia to make substrates. These materials have good insulation, thermal stability, and mechanical strength. At the same time, the electromagnetic properties of ceramic materials are superior, with low loss and low dielectric constant, which can meet the design requirements of high-frequency and small-size antennas. The principle of ceramic antennas is based on the propagation and radiation of electromagnetic waves in the antenna structure. When electromagnetic waves are transmitted through the conductor in the antenna structure, an electric field and a magnetic field are generated on the conductor, forming electromagnetic radiation. By optimizing the shape and size of the conductor, the radiation characteristics of the ceramic antenna can be controlled and optimized to meet the needs of different frequency bands and application scenarios. The main part of the ceramic antenna is composed of a ceramic substrate and a metal conductor. The metal conductor is made on the ceramic substrate through electroplating or deposition process, and its shape and layout determine the size, frequency response, and radiation characteristics of the antenna. This structure allows ceramic antennas to maintain high performance while achieving small size and lightweight design. However, for Bluetooth earphones, the volume of ceramic antennas is still relatively large, especially for TWS earphones (True Wireless Stereo earphones), which will have more electronic components on the mainboard, making the available space for ceramic earphones smaller. And the ceramic earphone placed on the earphone is also easily disturbed by the human body.

[0029] LDS antenna technology uses numerical control laser to directly transfer circuit patterns to the surface of molded plastic components, and forms circuit interconnection structures through the three-dimensional surface of the three-dimensional workpiece. Specifically, the technology includes the following key steps: injection molding: special thermoplastic plastic containing special chemical additives (i.e. laser powder) is injection molded on an injection molding machine. Laser activation: activation by laser beam to activate the laser powder to form a metal nucleus and form a rough surface to provide an anchor point for the next electroplating. Electroplating: chemical plating is performed on the laser-activated plastic surface to form a metal circuit such as copper, nickel, etc., so that the plastic becomes a MID component with a conductive circuit. Assembly: install the electroplated product to the product, and if necessary, spray on the circuit to obtain a good appearance.

[0030] In the prior art, ceramic antennas or FPC antennas are usually used, but due to the small size of the main board, ceramic antennas can only be used as a single pole, so that the performance is greatly affected by human body interference. And due to the limitation of the volume of the antenna, the bandwidth of the antenna is greatly limited. In wireless stereo earphones, due to the small size of the main board and the large number of components, the clearance area is insufficient, and ceramic antennas cannot be implemented. And the flexible antenna is not stable enough when connected with glass materials.

[0031] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4The wireless earphone in the first embodiment of this utility model includes: a housing 1, a main board 2, and a printed antenna 3. The housing 1 includes an upper shell 11 and a lower shell 12, which are fixedly connected and constrain a cavity 15. The upper shell 11 is made of transparent glass. The main board 2 is disposed inside the cavity 15 and has a feed point 21 and a ground point 22. One end of the printed antenna 3 is connected to the feed point 21, and the other end is connected to the ground point 22. The printed antenna 3 is printed on the upper shell 11. Various processes can be used to print the antenna onto the glass upper shell 11. These include laser direct forming technology, inkjet printing technology, vacuum electroplating technology, screen printing technology, and laser electroplating technology. Laser direct forming technology is a process that uses a laser to directly form a conductive pattern on the surface of a specific material. When applied to glass, a special LDS ink is usually coated on the glass surface, and then the metal components in the ink undergo a chemical reaction under the action of a laser through laser scanning to form a conductive layer. This forms a circuit on the upper shell 11 of the glass material, thus forming an antenna fixed to the upper shell 11. Inkjet printing technology uses the printhead of an inkjet printer to spray conductive ink onto the glass surface, forming conductive lines. Vacuum electroplating technology is a process of depositing a metal plating layer onto a glass surface in a vacuum environment. When printing an antenna, a conductive thin film can first be formed on the glass surface, and then a metal plating layer can be deposited on the conductive thin film through vacuum electroplating to form an antenna pattern. Screen printing technology uses a screen to print conductive ink onto the glass surface, forming a conductive pattern. Laser-induced chemical plating technology is a process combining laser and chemical plating. First, a special chemical plating solution is coated on the glass surface, and then a laser scanning method is used to cause the metal ions in the plating solution to undergo a reduction reaction under the action of the laser, depositing on the glass surface to form a conductive layer. Figure 1 , Figure 2 and Figure 3 This is a diagram showing the various parts of the left earphone. Figure 4 This is a schematic diagram of the right earphone.

[0032] Using glass as the upper shell of the earphones not only adds a unique visual aesthetic but also brings a fusion of technology and art. The transparent glass design allows consumers to directly see the internal structure of the earphones, including high-tech elements such as circuit boards, chips, and antennas. This "what you see is what you get" experience enhances the product's technological feel. Furthermore, the design of the motherboard 2's shape or the electronic components on it can further enhance the earphones' aesthetics. For example, the motherboard 2 can be designed with a special shape, or the touch area 23 on the motherboard 2 can be set with a special shape.

[0033] Inkjet printing technology can not only quickly print a conductive pattern on the upper shell 11 of the glass material, but also has higher flexibility, which can adapt to different shapes and sizes of antennas. Due to the small size and complex structure of the shell 1 in the earphone, the inkjet printing technology can better print the antenna on the inner side of the upper shell 11.

[0034] In the design of the earphone, in order to achieve some performance of the earphone, the upper shell 11 of the earphone is made of transparent glass material, that is, the side of the shell 1 away from the human body is made of transparent glass material. In order to make the printed antenna 3 on the earphone less affected by the human body, the antenna needs to be arranged on the side of the mainboard 2 away from the human body, that is, the antenna needs to be fixed on the upper shell 11. For the transparent glass material, the inkjet printing technology can better fix the antenna on the upper shell 11. If the pasting method is used, the connection of the antenna will not be firm enough, and even the antenna cannot be fixed on the shell 1. The printed antenna is connected with the feed point 21 and the grounding point 22 respectively. The signal is transmitted to the grounding point 22 through the feed point 21, and the signal is radiated when passing through the printed antenna. When the printed antenna is excited, it will generate electromagnetic waves and radiate to the surrounding space, thereby forming a signal connected with external electronic elements.

[0035] The mainboard 2 is a PCB board, that is, a printed circuit board. The PCB board is a kind of substrate for assembling electronic elements, which is made of one or more layers of insulating material and has copper tracks printed on it. These tracks connect various parts of the circuit. By connecting various elements in the circuit through the printed tracks on the board, a complete circuit system is formed, so that the electronic device can work normally. The feed point 21 and the grounding point 22 are formed by these conductive lines. The mainboard 2 can be fixed on the lower shell 12 or the upper shell 11 by pasting or other methods. Specifically, the mainboard 2 is firmly pasted on the corresponding position of the earphone shell 1 by using glue, so as to prevent the mainboard 2 from shaking or shifting inside the earphone, thereby ensuring the stability of audio transmission and the clarity of sound quality. The back glue can also form a sealing layer, effectively isolating the contact between the external environment and the internal electronic elements of the earphone, and improving the waterproof and dustproof performance of the earphone. This is of great significance to protect the precise electronic elements inside the earphone and prolong the service life of the earphone. Common back adhesive materials include double-sided tape, hot melt adhesive, silicone adhesive, etc. These materials have different adhesion and weather resistance, which can adapt to different use environments and needs. During the production of the earphone, the mainboard 2 is placed at the predetermined position inside the shell 1, and an appropriate amount of back adhesive is applied on the back or side of the mainboard 2. Then, the back adhesive is solidified by pressing or heating, so as to fix the mainboard 2 on the shell 1.

[0036] According to some embodiments of the present application, the printed antenna 3 comprises a main body 31, a first connecting part 32 and a second connecting part 33, the first connecting part 32 and the second connecting part 33 are arranged on the main body 31, the first connecting part 32 is connected with the feeding point 21, the second connecting part 33 is connected with the grounding point 22, and the main body 31 is printed on the inner side of the upper shell 11. By arranging the first connecting part 32 and the second connecting part 33, the printed antenna 3 can be more conveniently connected to the mainboard 2, and the installation of the earphone is more convenient.

[0037] According to some embodiments of the present application, the edge of the mainboard 2 is attached to the edge of the shell 1, and the main body 31 is arranged along the edge of the mainboard 2. Arranging along the edge of the mainboard 2 not only makes the distance between the main body 31 and the electronic elements on the mainboard 2 farther, but also makes the volume of the main body 31 larger. Arranging the distance between the main body 31 and the electronic elements on the mainboard 2 larger can better reduce the influence of the electronic elements on the mainboard 2 on the antenna. Arranging the antenna with a larger volume makes the signal of the antenna better, the distance of propagation farther, and the signal more stable.

[0038] The working principle of the antenna is mainly based on the radiation and reception of electromagnetic waves. When current passes through the antenna, a changing electromagnetic field is generated around the antenna, which in turn forms electromagnetic waves and radiates outward. Similarly, when the antenna receives electromagnetic waves, an induced current is generated in its conductor, thereby realizing the reception of electromagnetic waves. Increasing the volume of the antenna can improve the radiation efficiency, enhance the directivity, and increase the gain. The radiation efficiency of the antenna refers to the ability of the antenna to convert guided wave energy into electromagnetic wave energy. Increasing the volume of the antenna usually means that the size of the antenna is closer to its working wavelength or an integer multiple thereof, which helps the antenna to more effectively convert current into electromagnetic waves and radiate them out, thereby improving the radiation efficiency. The directivity of the antenna refers to the distribution characteristics of the energy in space when the antenna radiates or receives electromagnetic waves. Increasing the volume of the antenna, especially when using a directional antenna design, can enhance the radiation or reception capability of the antenna in a specific direction, while weakening the radiation or reception capability in other directions, thereby improving the directivity and anti-interference capability of communication. The gain of the antenna is a physical quantity that measures the ability of the antenna to transmit and receive signals in a certain direction. Increasing the volume of the antenna usually increases the gain of the antenna in that direction, i.e., the ability of the antenna to transmit and receive signals in that direction is stronger. This helps to maintain the strength and stability of the signal in long-distance communication.

[0039] According to some embodiments of the present application, the distance between the main body 31 and the mainboard 2 is not less than 1.5 mm. Through testing, when the distance between the mainboard 2 and the main body 31 is not less than 1.5 mm, the influence of the electronic elements on the mainboard 2 on the antenna is smaller, and the propagation effect of the antenna on the signal is better.

[0040] According to some embodiments of the present application, the first connecting part 32 is connected with the feeding point 21 by welding, and the second connecting part 33 is connected with the grounding point 22 by welding. The welding makes the connection between the antenna and the main board 2 more firm.

[0041] According to some embodiments of the present application, the upper shell 11 is arranged on the side of the lower shell 12 away from the human body. Human tissue has a certain absorption and reflection effect on wireless signals (including Bluetooth signals). When there is a human body in the signal transmission path between the earphone and the mobile phone, the signal will be blocked to different degrees, resulting in a decrease in signal strength. When the signal propagates in a non-straight line (such as bypassing the human body), it will experience attenuation, i.e., the signal strength gradually decreases. This attenuation will affect the signal quality received by the earphone, which may cause the sound to be intermittent or the sound quality to decrease. Therefore, by keeping the antenna as far away from the human body as possible, the signal quality of the antenna can be improved.

[0042] According to some embodiments of the present application, the upper shell 11 includes a top surface part 13 and a side surface part 14, the main board 2 is attached to the inner side of the side surface part 14, the main body 31 is arranged on the side surface part 14, and the top surface part 13 is arranged on the side of the side surface part 14 away from the lower shell 12. By printing the main body 31 on the side surface part 14, the direction in which the antenna on the earphone faces can be made more extensive when the earphone is worn on the human body, thereby providing better wireless signals.

[0043] According to some embodiments of the present application, the mainboard 2 is provided with a touch area 23, the touch area 23 is used for setting a control element, and the distance between the touch area 23 and the main body 31 is not less than 5 mm. The touch area 23 provided on the mainboard 2 can provide a convenient operation mode, improve the user experience and enhance the intelligent level of the earphone. Through the touch area, the user can easily realize various operations, such as playing / pausing music, answering / hanging up the phone, switching songs, adjusting the volume, etc. This operation mode is more intuitive and convenient than the traditional physical button, and also supports complex gesture recognition, the user can perform more operation instructions through different gestures such as sliding and long pressing, further improving the convenience of use. The design of the touch area makes the interaction between the earphone and the user more seamless and smooth. The user does not need to frequently take out the mobile phone or adjust the position of the earphone, and can complete various instructions through simple touch operation. The user can personalize the function of the touch area. This means that the user can customize the operation mode and response effect of the touch area according to their own usage habits and needs. It also has intelligent recognition function, which can recognize the user's intention according to the user's touch operation and automatically execute the corresponding operation. For example, when the user lightly touches the earphone, the earphone may automatically pause the music being played; when the user touches again, it resumes playing. Through the operation of the touch area, the earphone can also automatically adjust the sound effect and noise reduction mode according to the different scenes of the user, to provide a more personalized listening experience. Therefore, the touch area 23 has a large number of electronic components, which greatly interferes with the signal. Therefore, the touch area 23 is arranged at the middle area of the mainboard 2, away from the edge of the mainboard 2, and as far away from the antenna arranged at the edge of the mainboard 2 as possible, thereby reducing the influence of the touch area 23 on the signal of the antenna.

[0044] According to some embodiments of the present application, the width of the main body 31 is not less than 0.5 mm and not greater than 1.0 mm, and the width direction is from the mainboard 2 to the top surface 13. Further, the length of the main body 31 is not less than 2 / 3 of the length of the edge of the mainboard 2. The width of the main body 31 is limited, so that the main body 31 of the antenna can adapt to the space inside the shell 1. And the performance of the antenna can also be adjusted and optimized by adjusting the width of the main body 31. The length of the main body 31 is set to be not less than 2 / 3 of the length of the edge of the mainboard 2, so that the range of the signal radiated by the main body 31 is more extensive, thereby improving the wireless signal of the earphone.

[0045] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present application.

Claims

1. A wireless earphone, characterized by, The application relates to a shell, a main plate, and a printed antenna. The shell comprises an upper shell and a lower shell which are fixedly connected and limit a cavity, and the upper shell is transparent glass. The main plate is arranged in the cavity, and feeding points and grounding points are arranged on the main plate. One end of the printed antenna is connected with the feeding points, and the other end of the printed antenna is connected with the grounding points, and the printed antenna is printed on the upper shell.

2. The wireless earpiece of claim 1, wherein, The printed antenna comprises a main body, a first connecting part and a second connecting part, the first connecting part and the second connecting part are arranged on the main body, the first connecting part is connected with the feeding points, the second connecting part is connected with the grounding points, and the main body is printed on the inner side of the upper shell.

3. The wireless earpiece of claim 2, wherein, The edge of the main plate is attached to the edge of the shell, and the main body is arranged along the edge of the main plate.

4. The wireless earpiece of claim 3, wherein, The distance between the main body and the main plate is not less than 1.5 mm.

5. The wireless earpiece of claim 2, wherein, The first connecting part is connected with the feeding points through welding, and the second connecting part is connected with the grounding points through welding.

6. The wireless earpiece of claim 1, wherein, The upper shell is arranged on the side of the lower shell which is far away from the human body.

7. The wireless earpiece of claim 3, wherein, The upper shell comprises a top surface part and a side surface part, the main plate is attached to the inner side of the side surface part, the main body is arranged on the side surface part, and the top surface part is arranged on the side of the side surface part which is far away from the lower shell.

8. The wireless earpiece of claim 3, wherein, A touch area is arranged on the main plate, the touch area is used for arranging control elements, and the distance between the touch area and the main body is not less than 5 mm.

9. The wireless earpiece of claim 7, wherein, The width of the main body is not less than 0.5 mm and not more than 1.0 mm, and the width direction is the direction from the main plate to the top surface part.

10. The wireless earpiece of claim 3, wherein, The length of the main body is not less than 2 / 3 of the length of the edge of the main plate.

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